/* roulang page: index */
:root {
            --bg: #F3F0EA;
            --surface: #FCFAF5;
            --ink: #101114;
            --text: #191919;
            --muted: #6E6A63;
            --line: #E2DED6;
            --brand: #D6F228;
            --accent: #FF6333;
            --white: #FFFFFF;
            --radius-sm: 2px;
            --radius-md: 6px;
            --radius-lg: 12px;
            --shadow-hover: 0 12px 40px rgba(16,17,20,0.08);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.2, 0, 0, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", -apple-system, sans-serif;
            --font-serif: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", serif;
            --font-mono: "SF Mono", "Roboto Mono", ui-monospace, monospace;
            --container: 1280px;
            --space-section: 96px;
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 64px;
            }
        }

        /* reset & base */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
        }

        ul, ol {
            list-style: none;
        }

        button {
            font-family: var(--font-sans);
            cursor: pointer;
            border: none;
            background: none;
        }

        input {
            font-family: var(--font-sans);
            border: none;
            outline: none;
        }

        ::selection {
            background: rgba(214, 242, 40, 0.4);
        }

        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--ink);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--line);
        }

        /* utility */
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
        }

        .mono {
            font-family: var(--font-mono);
        }

        .serif {
            font-family: var(--font-serif);
        }

        .section {
            padding: var(--space-section) 0;
        }

        .text-center {
            text-align: center;
        }

        /* buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 24px;
            border-radius: 4px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all 0.2s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn:active {
            transform: scale(0.98);
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--brand);
            color: var(--ink);
            border-color: var(--brand);
        }

        .btn-primary:hover {
            background: var(--ink);
            border-color: var(--ink);
            color: var(--white);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            border-color: rgba(243,240,234,0.5);
            color: var(--bg);
        }

        .btn-outline:hover {
            border-color: var(--brand);
            color: var(--brand);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid var(--ink);
            color: var(--ink);
        }

        .btn-outline-light:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(255,99,51,0.04);
        }

        .btn-light {
            background: var(--surface);
            color: var(--ink);
        }

        .btn-light:hover {
            background: var(--brand);
        }

        /* badges */
        .badge-new {
            display: inline-block;
            padding: 3px 10px;
            background: var(--accent);
            color: #fff;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            line-height: 1.4;
        }

        /* section header */
        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            gap: 32px;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            letter-spacing: -0.02em;
        }

        .section-header .desc {
            color: var(--muted);
            font-size: 15px;
            max-width: 400px;
        }

        .section-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--text);
            font-size: 14px;
            transition: all 0.2s ease;
        }

        .section-link i {
            font-size: 13px;
            transition: transform 0.2s ease;
        }

        .section-link:hover {
            color: var(--accent);
        }
        .section-link:hover i {
            transform: translateX(4px);
        }

        /* ======== header nav ======== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--ink);
            border-bottom: 1px solid rgba(243,240,234,0.08);
            height: 72px;
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 40px;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--brand);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            flex-shrink: 0;
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.15;
            min-width: 0;
        }

        .logo-text strong {
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-text small {
            color: rgba(243,240,234,0.45);
            font-size: 11px;
            font-weight: 400;
            white-space: nowrap;
        }

        .main-nav {
            flex: 1;
            display: flex;
            align-items: center;
            gap: 32px;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .main-nav a {
            color: rgba(243,240,234,0.6);
            font-size: 14px;
            font-weight: 500;
            position: relative;
            padding: 6px 0;
            transition: color 0.2s;
            white-space: nowrap;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--brand);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.2s ease;
        }

        .main-nav a:hover {
            color: #fff;
        }
        .main-nav a:hover::after {
            transform: scaleX(1);
        }

        .main-nav a.active {
            color: #fff;
        }
        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            position: relative;
        }

        .header-search input {
            width: 180px;
            height: 36px;
            background: rgba(243,240,234,0.06);
            border: 1px solid rgba(243,240,234,0.12);
            border-radius: 20px;
            padding: 0 14px 0 36px;
            color: rgba(255,255,255,0.9);
            font-size: 13px;
            transition: all 0.2s ease;
        }

        .header-search input::placeholder {
            color: rgba(243,240,234,0.35);
        }

        .header-search input:focus {
            background: #fff;
            color: var(--ink);
            border-color: var(--brand);
            width: 220px;
        }

        .header-search i {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(243,240,234,0.4);
            font-size: 13px;
            pointer-events: none;
            transition: color 0.2s;
        }

        .header-search input:focus + i {
            color: var(--text);
        }

        .header-login {
            height: 34px;
            padding: 0 16px;
            background: transparent;
            border: 1px solid rgba(243,240,234,0.25);
            border-radius: 4px;
            color: rgba(243,240,234,0.8);
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            transition: all 0.2s;
        }

        .header-login:hover {
            border-color: var(--brand);
            color: var(--brand);
        }

        .header-post {
            height: 34px;
            padding: 0 16px;
            background: var(--brand);
            border-radius: 4px;
            color: var(--ink);
            font-size: 13px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            transition: all 0.2s;
        }

        .header-post:hover {
            background: #fff;
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            position: relative;
            z-index: 60;
            color: var(--brand);
            background-color: rgba(214, 242, 40, 0.1);
            border-radius: 4px;
        }

        .mobile-menu-toggle i {
            font-size: 18px;
        }

        /* mobile nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            width: 100%;
            background: var(--ink);
            z-index: 99;
            padding: 24px 20px 32px;
            border-bottom: 1px solid rgba(243,240,234,0.1);
            box-shadow: 0 20px 40px rgba(0,0,0,0.5);
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav a {
            display: block;
            padding: 14px 0;
            border-bottom: 1px solid rgba(243,240,234,0.06);
            color: rgba(243,240,234,0.75);
            font-size: 15px;
            font-weight: 500;
        }

        .mobile-nav a.active {
            color: var(--brand);
        }

        .mobile-nav .mobile-search {
            margin-bottom: 20px;
            position: relative;
        }

        .mobile-nav .mobile-search input {
            width: 100%;
            height: 44px;
            background: rgba(243, 240, 234, 0.08);
            border-radius: 8px;
            padding: 0 16px 0 42px;
            color: #fff;
            border: 1px solid transparent;
        }

        .mobile-nav .mobile-search i {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(243,240,234,0.4);
            font-size: 14px;
        }

        /* ======== HERO ======== */
        .hero {
            position: relative;
            background: var(--ink) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 120px 0 80px;
            overflow: hidden;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(16,17,20,0.8) 0%, rgba(16,17,20,0.5) 60%, rgba(16,17,20,0.2) 100%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            min-height: 340px;
            justify-content: center;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 28px;
            opacity: 0;
            animation: fadeUp 0.6s 0.1s forwards;
        }

        .hero-tag span {
            width: 6px;
            height: 6px;
            background-color: var(--accent);
            display: inline-block;
        }

        .hero-tag .label {
            font-family: var(--font-mono);
            font-size: 12px;
            letter-spacing: 0.12em;
            color: rgba(243, 240, 234, 0.6);
            text-transform: uppercase;
        }

        .hero-tag .label strong {
            color: #fff;
            font-weight: 600;
        }

        .hero-title {
            font-size: clamp(34px, 6vw, 64px);
            font-weight: 700;
            color: #fff;
            line-height: 1.12;
            letter-spacing: -0.01em;
            max-width: 760px;
            opacity: 0;
            animation: fadeUp 0.6s 0.2s forwards;
            margin-bottom: 24px;
        }

        .hero-title .mark-green {
            color: var(--brand);
        }

        .hero-subtitle {
            font-size: 17px;
            color: rgba(243, 240, 234, 0.75);
            max-width: 560px;
            line-height: 1.8;
            margin-bottom: 36px;
            opacity: 0;
            animation: fadeUp 0.6s 0.3s forwards;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            opacity: 0;
            animation: fadeUp 0.6s 0.4s forwards;
        }

        .hero-meta {
            display: flex;
            gap: 32px;
            margin-top: 56px;
            opacity: 0;
            animation: fadeUp 0.6s 0.5s forwards;
        }

        .hero-meta-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-meta-item .num {
            font-family: var(--font-mono);
            font-size: 24px;
            font-weight: 600;
            color: var(--brand);
        }

        .hero-meta-item .text {
            font-size: 13px;
            color: rgba(243,240,234,0.5);
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-scroll {
            position: absolute;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            opacity: 0.5;
            animation: bounceDown 1.6s infinite;
        }

        .hero-scroll .mouse-line {
            width: 1px;
            height: 36px;
            background: rgba(255,255,255,0.5);
        }

        .hero-scroll i {
            color: #fff;
            font-size: 12px;
            animation: scrollHint 1.8s infinite ease-out;
        }

        @keyframes bounceDown {
            0%, 100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(8px);
            }
        }

        @keyframes scrollHint {
            0% {
                opacity: 1;
                transform: translateY(0);
            }
            100% {
                opacity: 0;
                transform: translateY(10px);
            }
        }

        /* ======== TOC directory ======== */
        .toc-section {
            background: var(--bg);
        }

        .toc-list {
            border-top: 2px solid var(--ink);
            margin-top: 0;
        }

        .toc-item {
            display: flex;
            align-items: center;
            gap: 28px;
            padding: 28px 8px;
            border-bottom: 1px solid var(--line);
            transition: background 0.2s, padding-left 0.2s;
        }

        .toc-item:hover {
            background: rgba(255,255,255,0.4);
            padding-left: 16px;
        }

        .toc-num {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 600;
            color: var(--brand);
            min-width: 48px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .toc-num::after {
            content: '';
            width: 36px;
            height: 1px;
            display: inline-block;
            background: var(--line);
        }

        .toc-content {
            flex: 1;
            min-width: 0;
        }

        .toc-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--ink);
            line-height: 1.4;
        }

        .toc-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .toc-icon {
            font-size: 24px;
            color: var(--muted);
            transition: color 0.2s, transform 0.2s;
            flex-shrink: 0;
        }

        .toc-item:hover {
            cursor: pointer;
        }
        .toc-item:hover .toc-icon {
            color: var(--accent);
            transform: translateX(6px);
        }

        .toc-item:hover .toc-num {
            color: var(--accent);
        }

        /* ======== CMS latest ======== */
        .latest-section {
            background: var(--surface);
        }

        .card-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .info-card {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            padding: 24px;
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            transition: all 0.3s;
            position: relative;
        }

        .info-card:hover {
            border-color: var(--ink);
            box-shadow: 0 8px 24px rgba(16,17,20,0.06);
            transform: translateY(-2px);
        }

        .info-card-img {
            width: 120px;
            height: 80px;
            border-radius: 4px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .info-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .info-card-content {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .info-card-label {
            display: flex;
            gap: 8px;
            margin-bottom: 2px;
        }

        .news-tag {
            display: inline-block;
            padding: 2px 10px;
            border: 1px solid var(--line);
            border-radius: 999px;
            font-size: 12px;
            color: var(--muted);
            background: var(--surface);
            font-weight: 500;
        }

        .info-card-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
        }

        .info-card-content h3 a {
            position: static;
            color: inherit;
        }
        .info-card-content h3 a.onwards::after {
            content: '';
            position: absolute;
            inset: 0;
        }

        .info-card-content h3 a:hover {
            color: var(--accent);
        }

        .info-card-except {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .info-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 4px;
            font-size: 12px;
            color: var(--muted);
        }

        .info-card-arrow {
            align-self: center;
            color: var(--muted);
            font-size: 18px;
            transition: all 0.2s;
            flex-shrink: 0;
        }

        .info-card:hover .info-card-arrow {
            color: var(--accent);
            transform: translateX(4px);
        }

        /* ======== FEATURED ======== */
        .featured-section {
            background: var(--bg);
        }

        .grid {
            display: grid;
            gap: 24px;
        }

        .featured-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: 0.3s;
            display: flex;
            flex-direction: column;
        }

        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--line);
        }

        .featured-cover {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #e8e4dc;
        }

        .featured-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.2, 0, 0, 1);
        }

        .featured-card:hover .featured-cover img {
            transform: scale(1.03);
        }

        .featured-body {
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding: 24px;
            flex: 1;
        }

        .featured-body h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
        }
        .featured-body h3 a:hover {
            color: var(--accent);
        }

        .featured-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .featured-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: auto;
            font-size: 13px;
            color: var(--muted);
        }

        .featured-meta .post-tag {
            color: var(--text);
            background: rgba(214,242,40,0.3);
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 500;
        }

        .grid-2col {
            grid-template-columns: repeat(2, 1fr);
        }

        .grid-first-wide .featured-card:first-child {
            grid-column: span 2;
        }

        @media (max-width: 768px) {
            .grid-first-wide .featured-card:first-child {
                grid-column: span 1;
            }
            .grid-2col {
                grid-template-columns: 1fr;
            }
        }

        .grid-2col {
            grid-template-columns: repeat(2, 1fr);
        }

        .featured-card-big {
            grid-column: span 2;
            flex-direction: row;
            align-items: stretch;
        }

        @media (max-width: 1024px) {
            .featured-card-big {
                grid-column: span 2;
                flex-direction: column;
            }
        }

        .featured-card-big .featured-cover {
            width: 50%;
            aspect-ratio: auto;
            min-height: 360px;
        }

        @media (max-width: 1024px) {
            .featured-card-big {
                flex-direction: column;
            }
            .featured-card-big .featured-cover {
                width: 100%;
                aspect-ratio: 4/3;
                min-height: unset;
            }
        }

        /* ======== INFO STRIP  ======== */
        .info-strip {
            background-color: var(--ink);
            position: relative;
            color: #c9c8c2;
        }

        .strip-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            color: rgba(243,240,234,0.75);
        }

        .strip-card {
            border-left: 1px solid rgba(243,240,234,0.2);
            padding-left: 24px;
            transition: 0.2s;
        }

        .strip-card:hover {
            border-color: var(--brand);
            transform: translateY(-4px);
        }

        .strip-card .strip-icon {
            color: var(--brand);
            font-size: 28px;
            margin-bottom: 16px;
        }

        .strip-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: #fff;
        }

        .strip-card p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(243,240,234,0.55);
        }

        @media (max-width: 1024px) {
            .strip-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (max-width: 640px) {
            .strip-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ======== details ======== */
        .tab-section {
            background: var(--bg);
        }

        .tab-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .tab-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            text-align: center;
            transition: 0.3s;
        }

        .tab-card:hover {
            border-color: var(--brand);
            box-shadow: 0 12px 30px rgba(16, 17, 20, 0.08);
            transform: translateY(-4px);
        }

        .tab-card-icon {
            width: 56px;
            height: 56px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin: 0 auto 20px;
            background: rgba(214,242,40,0.14);
            color: var(--text);
        }

        .tab-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .tab-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .tab-link {
            font-size: 13px;
            font-weight: 600;
            border-bottom: 2px solid var(--brand);
            padding-bottom: 2px;
            transition: all 0.2s;
        }

        .tab-link:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        @media (max-width: 768px) {
            .tab-cards {
                grid-template-columns: 1fr;
            }
        }

        .full-width-cta {
            background: var(--ink);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-badge {
            display: inline-block;
            margin-bottom: 24px;
        }

        .cta-badge span {
            padding: 4px 14px;
            border: 1px solid var(--brand);
            border-radius: 999px;
            font-size: 13px;
            color: var(--brand);
            letter-spacing: 0.04em;
        }

        .cta-title {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        .cta-desc {
            color: rgba(243, 240, 234, 0.6);
            font-size: 15px;
            line-height: 1.8;
            max-width: 520px;
            margin-bottom: 32px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.3);
        }

        .cta-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        @media (max-width: 1024px) {
            .cta-grid {
                grid-template-columns: 1fr;
            }
        }

        .cta-mini-note {
            font-size: 12px;
            color: rgba(243,240,234,0.4);
            margin-top: 20px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .cta-mini-note i {
            color: var(--brand);
        }

        /* ======== FAQ ======== */
        .faq-section {
            background: var(--surface);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom-width: 1px;
            border-bottom-style: solid;
            border-bottom-color: var(--line);
            padding: 4px 0;
        }

        .faq-item:first-child {
            border-top-width: 1px;
            border-top-style: solid;
            border-top-color: var(--line);
        }

        .faq-item details {
            padding: 20px 8px;
        }

        .faq-item details[open] {
            background: rgba(214, 242, 40, 0.04);
            border-radius: 4px;
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            transition: color 0.15s;
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .q-icon {
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
            color: var(--accent);
            min-width: 32px;
        }

        .faq-item summary:hover {
            color: var(--accent);
        }

        .faq-item .faq-answer {
            padding: 16px 0 8px 48px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.9;
        }

        .faq-status {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            background: rgba(214,242,40,0.4);
            width: fit-content;
            margin: 0 auto;
            padding: 6px 24px;
            border-radius: 999px;
            color: var(--ink);
            font-size: 13px;
            font-weight: 600;
        }

        /* ======== SAVE/SHARE ======== */
        .save-share-section {
            background: var(--ink);
            color: #fff;
        }

        .save-share-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
            padding: 32px;
            border: 1px solid rgba(243,240,234,0.18);
            border-radius: 8px;
        }

        .save-share-text {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .save-share-icon {
            width: 48px;
            height: 48px;
            background: rgba(214,242,40,0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--brand);
        }

        .save-share-title {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }

        .save-share-desc {
            font-size: 14px;
            color: rgba(243,240,234,0.55);
        }

        .save-share-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }

        .btn-save:hover .fa-solid {
            color: var(--accent);
        }

        .btn-outline-light {
            color: var(--bg);
        }

        .btn-sm {
            height: 40px;
            font-size: 14px;
            padding: 0 18px;
        }

        .to-top-link {
            color: rgba(243,240,234,0.6);
            font-size: 14px;
            padding: 12px 0;
        }
        .to-top-link:hover {
            color: var(--brand);
        }

        /* ======== FOOTER ======== */
        .site-footer {
            background: var(--ink);
            color: rgba(243,240,234,0.5);
            padding: 60px 0 32px;
            border-top: 1px solid rgba(243,240,234,0.08);
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 48px;
            flex-wrap: wrap;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(243,240,234,0.08);
        }

        .footer-brand .logo {
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13px;
            max-width: 320px;
            line-height: 1.9;
            color: rgba(243,240,234,0.4);
            margin-top: 12px;
        }

        .footer-nav {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px 40px;
            flex-shrink: 0;
        }

        .footer-nav a {
            color: rgba(243,240,234,0.5);
            font-size: 14px;
            line-height: 1.6;
            white-space: nowrap;
        }

        .footer-nav a:hover {
            color: var(--brand);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding-top: 28px;
            font-size: 13px;
            color: rgba(243,240,234,0.3);
            flex-wrap: wrap;
        }

        .footer-bottom .copyright {
            font-family: var(--font-mono);
            font-size: 12px;
            letter-spacing: 0.03em;
        }

        .to-top {
            position: fixed;
            bottom: 32px;
            right: 24px;
            background: var(--ink);
            border: 1px solid rgba(243,240,234,0.4);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 200;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }

        .to-top.show {
            opacity: 1;
            visibility: visible;
        }

        .to-top i {
            color: var(--brand);
            font-size: 16px;
        }

        .to-top:hover {
            border-color: var(--brand);
            transform: translateY(-4px);
        }

        /* scroll reveal */
        .reveal {
            opacity: 0;
            transform: translateY(10px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
            }
            .reveal {
                opacity: 1;
                transform: none;
            }
            .hero-title,
            .hero-subtitle,
            .hero-actions,
            .hero-meta,
            .hero-tag {
                animation: none;
                opacity: 1;
            }
        }

        /* ======== RESPONSIVE ======== */
        @media (max-width: 1024px) {
            .header-inner {
                gap: 20px;
            }
            .main-nav {
                gap: 20px;
            }
            .header-search input {
                width: 140px;
                font-size: 12px;
            }
            .header-search input:focus {
                width: 180px;
            }
            .btn {
                padding: 0 18px;
            }
        }

        @media (max-width: 900px) {
            .main-nav {
                display: none;
            }
            .header-search {
                display: none;
            }
            .header-login {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
                width: 36px;
                height: 36px;
            }
            .header-actions {
                gap: 8px;
                margin-left: auto;
            }
            .mobile-nav .mobile-search {
                display: block;
            }
            .mobile-nav {
                display: none;
            }
            .mobile-nav.open {
                display: block;
            }
            .tab-cards {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero {
                padding: 90px 0 60px;
            }
            .hero-inner {
                min-height: 300px;
            }
            .hero-meta {
                flex-wrap: wrap;
                gap: 24px;
            }
            .toc-item {
                flex-wrap: wrap;
                gap: 12px;
            }
            .toc-desc {
                -webkit-line-clamp: 2;
            }
            .section-header {
                align-items: center;
                gap: 16px;
                flex-direction: column;
            }
            .section-header .desc {
                max-width: 100%;
            }
            .tab-cards {
                grid-template-columns: 1fr;
            }
            .grid-2col {
                grid-template-columns: 1fr;
            }
            .featured-card-big {
                flex-direction: column;
            }
            .featured-card-big .featured-cover {
                width: 100%;
                min-height: 220px;
            }
            .info-card {
                flex-direction: row;
                gap: 16px;
                padding: 16px;
            }
            .info-card-img {
                width: 90px;
                height: 70px;
                padding: 0;
            }
            .info-card-except {
                -webkit-line-clamp: 1;
            }
            .footer-top {
                gap: 32px;
                flex-direction: column;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .save-share-box {
                padding: 20px;
            }
        }

        @media (max-width: 520px) {
            .btn {
                height: 44px;
                font-size: 14px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-meta-item .num {
                font-size: 20px;
            }
            .info-card {
                flex-direction: column;
            }
            .info-card-img {
                width: 100%;
                height: 140px;
            }
            .toc-num {
                font-size: 24px;
            }
            .strip-card {
                padding-left: 16px;
            }
        }

/* roulang page: article */
:root{
  --bg:#F3F0EA;
  --surface:#FCFAF5;
  --ink:#101114;
  --text:#191919;
  --muted:#6E6A63;
  --line:#E2DED6;
  --brand:#D6F228;
  --accent:#FF6333;
  --paper:#F8F5EF;
  --radius-lg:6px;
  --radius-sm:4px;
  --radius-tag:999px;
  --shadow-hover:0 12px 40px rgba(16,17,20,.08);
  --container:1280px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
.container{
  width:min(var(--container), 100% - 40px);
  margin-inline:auto;
}
::selection{background:rgba(214,242,40,.4)}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--ink);
  color:#F3F0EA;
  border-bottom:1px solid rgba(243,240,234,.16);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:72px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-icon{
  width:34px;
  height:34px;
  background:var(--brand);
  color:var(--ink);
  border-radius:6px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:18px;
}
.logo-text{
  display:flex;
  flex-direction:column;
  gap:2px;
}
.logo-text strong{
  font-size:17px;
  letter-spacing:.2px;
  line-height:1.2;
  color:#fff;
}
.logo-text small{
  font-size:12px;
  color:rgba(243,240,234,.58);
  line-height:1.2;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:20px;
}
.main-nav a{
  position:relative;
  padding:10px 12px;
  color:rgba(243,240,234,.68);
  font-size:15px;
  font-weight:500;
  white-space:nowrap;
  transition:color .2s ease;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:12px;
  right:100%;
  bottom:2px;
  height:2px;
  background:var(--brand);
  transition:right .24s ease,left .24s ease;
}
.main-nav a:hover::after,
.main-nav a.active::after{
  right:12px;
  left:12px;
}
.main-nav a.active,
.main-nav a:hover{
  color:#fff;
}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.site-search{
  display:flex;
  align-items:center;
  height:38px;
  width:204px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-sm);
  padding:0 12px;
  transition:background .2s,border-color .2s;
}
.site-search svg{
  width:15px;
  height:15px;
  stroke:rgba(243,240,234,.6);
  flex-shrink:0;
  transition:stroke .2s;
}
.site-search input{
  border:none;
  background:none;
  outline:none;
  margin-left:8px;
  width:100%;
  color:#F3F0EA;
  font-size:13px;
}
.site-search input::placeholder{
  color:rgba(243,240,234,.5);
}
.site-search:focus-within{
  background:#fff;
  border-color:var(--brand);
}
.site-search:focus-within input{
  color:#191919;
}
.site-search:focus-within svg{
  stroke:#191919;
}
.header-cta{
  height:36px;
  padding:0 14px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;
}
.btn:active{
  transform:scale(.98);
}
.btn:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}
.btn-primary{
  background:var(--brand);
  color:var(--ink);
  border-color:var(--brand);
}
.btn-primary:hover{
  background:var(--ink);
  color:#fff;
  border-color:var(--ink);
}
.btn-outline{
  background:transparent;
  color:var(--text);
  border-color:rgba(25,25,25,.55);
}
.btn-outline:hover{
  border-color:var(--brand);
  color:var(--text);
}
.btn-sm{
  height:36px;
  padding:0 16px;
  font-size:14px;
}
.btn-ghost{
  background:transparent;
  border-color:transparent;
  color:var(--muted);
}
.btn-ghost:hover{
  color:var(--ink);
  background:rgba(16,17,20,.06);
}
.menu-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:6px;
  border:1px solid rgba(255,255,255,.18);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  margin-left:auto;
}
.menu-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:#F3F0EA;
  transition:transform .2s,opacity .2s;
}
.menu-toggle[aria-expanded="true"] span:nth-child(1){
  transform:translateY(7px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2){
  opacity:0;
}
.menu-toggle[aria-expanded="true"] span:nth-child(3){
  transform:translateY(-7px) rotate(-45deg);
}

.live-strip{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  background:var(--surface);
  color:var(--muted);
  font-size:13px;
}
.live-pulse{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--accent);
  animation:pulse 1.6s infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(255,99,51,.5)}
  50%{box-shadow:0 0 0 6px rgba(255,99,51,0)}
}

.breadcrumb-bar{
  padding-top:30px;
}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
}
.crumb a{
  transition:color .2s;
}
.crumb a:hover{
  color:var(--text);
}
.crumb .sep{
  color:rgba(16,17,20,.3);
}

.article-shell{
  padding:30px 0 16px;
}
.post-header{
  max-width:920px;
  padding:26px 0 28px;
  border-bottom:1px solid var(--line);
}
.post-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:18px;
}
.post-kicker .tag{
  display:inline-flex;
  align-items:center;
  padding:5px 14px;
  border-radius:var(--radius-tag);
  background:var(--ink);
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  letter-spacing:.2px;
}
.post-kicker .folder{
  color:var(--muted);
  font-size:12px;
}
.post-title{
  font-size:clamp(30px, 4.6vw, 56px);
  line-height:1.16;
  font-weight:700;
  letter-spacing:-.5px;
  color:var(--text);
}
.post-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px;
  margin-top:22px;
  color:var(--muted);
  font-size:13px;
  font-family:"SF Mono","Roboto Mono",ui-monospace,monospace;
}
.post-meta .dot{
  opacity:.45;
}

.post-hero{
  margin-top:26px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:#E8E2D9;
  aspect-ratio:16/7;
}
.post-hero img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.post-layout{
  max-width:760px;
  margin:0 auto;
  padding:36px 0 0;
}

.post-body{
  background:var(--surface);
  padding:44px 48px 36px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
}
.post-body p{
  margin-bottom:24px;
}
.post-body h3{
  margin:34px 0 12px;
  font-size:21px;
  line-height:1.5;
  font-weight:650;
}
.post-body h4{
  margin:26px 0 10px;
  font-size:17px;
  line-height:1.6;
  font-weight:650;
}
.post-body a{
  color:var(--text);
  text-decoration:underline;
  text-decoration-color:var(--brand);
  text-underline-offset:4px;
  text-decoration-thickness:2px;
  transition:text-decoration-color .2s,color .2s;
}
.post-body a:hover{
  color:var(--ink);
  text-decoration-color:var(--ink);
}
.post-body blockquote{
  margin:28px 0;
  padding:8px 0 8px 22px;
  border-left:1px solid var(--ink);
  color:var(--muted);
  font-family:"Songti SC","Noto Serif CJK SC","Source Han Serif SC",serif;
  font-size:17px;
}
.post-body ul,
.post-body ol{
  margin:0 0 24px;
  padding-left:24px;
}
.post-body ul li{
  list-style:disc;
  margin-bottom:8px;
}
.post-body ol li{
  list-style:decimal;
  margin-bottom:8px;
}
.post-body img{
  margin:28px auto;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
}
.post-body table{
  width:100%;
  margin:28px 0;
  border-collapse:collapse;
  font-size:14px;
}
.post-body th,
.post-body td{
  border-bottom:1px solid var(--line);
  padding:12px 10px;
  text-align:left;
}
.post-body th{
  border-bottom:1px solid var(--text);
  font-weight:650;
}
.post-body .img-placeholder{
  min-height:240px;
}

.post-bottom-cta{
  margin:36px 0 0;
  padding:26px 30px;
  background:var(--surface);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:18px;
}
.cta-label{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:650;
}
.cta-label svg{
  width:20px;
  height:20px;
  color:var(--accent);
}
.cta-actions{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
}
.btn-favorite.active{
  background:var(--accent);
  color:#fff;
  border-color:var(--accent);
}
.copy-feedback{
  font-size:13px;
  color:var(--text);
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-width:110px;
}
.copy-feedback.ok{
  color:var(--muted);
}

.related-block{
  padding:84px 0 20px;
}
.section-kicker{
  font-size:12px;
  font-weight:650;
  letter-spacing:.14em;
  color:var(--accent);
  margin-bottom:8px;
  display:flex;
  align-items:center;
  gap:8px;
}
.section-kicker::before{
  content:"";
  width:6px;
  height:6px;
  background:var(--accent);
}
.section-h2{
  font-size:28px;
  font-weight:700;
  line-height:1.3;
}
.section-desc{
  margin-top:8px;
  color:var(--muted);
  font-size:15px;
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
  margin-top:30px;
}
.related-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:transparent;
}
.related-card figure{
  aspect-ratio:4/3;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:#ECE7DF;
}
.related-card figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s cubic-bezier(.2,0,0,1);
}
.related-card:hover figure img{
  transform:scale(1.03);
}
.related-card-body{
  padding:18px;
  display:flex;
  flex-direction:column;
  gap:8px;
  flex:1;
}
.chip{
  align-self:flex-start;
  padding:4px 10px;
  border:1px solid rgba(16,17,20,.25);
  border-radius:var(--radius-tag);
  font-size:11px;
  color:var(--muted);
  transition:border-color .2s,color .2s;
}
.related-card:hover .chip{
  border-color:var(--brand);
  color:var(--ink);
}
.related-card h3{
  font-size:17px;
  line-height:1.45;
  font-weight:700;
}
.related-card p{
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
  flex:1;
}
.related-more{
  margin-top:16px;
  color:var(--muted);
  font-size:13px;
}
.related-more:hover{
  color:var(--text);
}

.back-directory{
  padding:52px 0 92px;
  text-align:center;
}

.site-footer{
  background:var(--ink);
  color:#F3F0EA;
}
.site-footer .container{
  padding-top:52px;
  padding-bottom:40px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:48px;
  padding-bottom:34px;
  border-bottom:1px solid rgba(243,240,234,.14);
}
.footer-brand .logo{
  margin-bottom:18px;
}
.footer-brand .logo-text strong{
  color:#fff;
}
.footer-brand p{
  max-width:520px;
  color:rgba(243,240,234,.58);
  font-size:14px;
  line-height:1.85;
}
.footer-nav{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:12px 24px;
  align-content:start;
}
.footer-nav a{
  color:rgba(243,240,234,.68);
  font-size:14px;
  transition:color .2s;
  padding:2px 0;
}
.footer-nav a:hover{
  color:var(--brand);
}
.footer-bottom{
  margin-top:26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(243,240,234,.45);
}
.copyright{
  font-family:"SF Mono","Roboto Mono",ui-monospace,monospace;
}

.back-top{
  position:fixed;
  right:24px;
  bottom:28px;
  width:44px;
  height:44px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(243,240,234,.22);
  background:rgba(16,17,20,.85);
  color:var(--brand);
  display:flex;
  align-items:center;
  justify-content:center;
  opacity:0;
  pointer-events:none;
  transform:translateY(10px);
  transition:opacity .2s,transform .2s,background .2s,border-color .2s;
  z-index:60;
}
.back-top.show{
  opacity:1;
  pointer-events:auto;
  transform:translateY(0);
}
.back-top:hover{
  background:#000;
  border-color:var(--brand);
}
.back-top svg{
  width:18px;
  height:18px;
}

.notfound-block{
  min-height:56vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:80px 0;
}
.notfound-inner{
  max-width:560px;
  text-align:center;
}
.notfound-code{
  font-size:80px;
  font-weight:800;
  font-family:"SF Mono","Roboto Mono",ui-monospace,monospace;
  color:var(--line);
  line-height:1;
}
.notfound-block h1{
  margin:18px 0 10px;
  font-size:30px;
  font-weight:700;
}
.notfound-block p{
  color:var(--muted);
  margin-bottom:28px;
}
.notfound-actions{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:12px;
}

@media(prefers-reduced-motion:reduce){
  *{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  html{
    scroll-behavior:auto;
  }
}
.reveal{
  opacity:0;
  transform:translateY(10px);
  transition:opacity .6s ease,transform .6s ease;
}
.reveal.in{
  opacity:1;
  transform:none;
}

@media (max-width:1180px){
  .main-nav{
    margin-left:8px;
  }
  .main-nav a{
    padding:10px 8px;
  }
  .site-search{
    width:170px;
  }
  .header-inner{
    gap:10px;
  }
}
@media (max-width:1024px){
  .menu-toggle{
    display:flex;
  }
  .header-inner{
    min-height:60px;
  }
  .site-search{
    display:none;
  }
  .main-nav{
    display:none;
    position:absolute;
    top:100%;
    left:20px;
    right:20px;
    margin:0;
    background:var(--ink);
    border:1px solid rgba(255,255,255,.15);
    border-radius:12px;
    padding:16px;
    flex-direction:column;
    gap:4px;
    box-shadow:0 24px 60px rgba(0,0,0,.4);
  }
  .main-nav.open{
    display:flex;
  }
  .main-nav a{
    width:100%;
    padding:13px 14px;
    border-radius:8px;
  }
  .main-nav a:hover{
    background:rgba(255,255,255,.06);
    color:#fff;
  }
  .main-nav a::after{
    display:none;
  }
  .header-cta{
    margin-left:auto;
  }
}
@media (max-width:900px){
  .related-grid{
    grid-template-columns:repeat(2,1fr);
  }
}
@media (max-width:768px){
  .container{
    width:min(var(--container), 100% - 32px);
  }
  .logo-text strong{
    font-size:15px;
  }
  .logo-text small{
    display:none;
  }
  .header-cta{
    padding:0 12px;
    font-size:13px;
    height:34px;
  }
  .breadcrumb-bar{
    padding-top:18px;
  }
  .article-shell{
    padding:12px 0 6px;
  }
  .post-header{
    padding:20px 0 20px;
  }
  .post-title{
    font-size:29px;
    line-height:1.25;
  }
  .post-meta{
    gap:10px 14px;
  }
  .post-body{
    padding:26px 20px;
  }
  .post-bottom-cta{
    padding:22px 18px;
    flex-direction:column;
    align-items:flex-start;
  }
  .related-block{
    padding:64px 0 10px;
  }
  .footer-top{
    grid-template-columns:1fr;
    gap:28px;
  }
  .footer-bottom{
    flex-direction:column;
    justify-content:flex-start;
  }
  .back-top{
    right:14px;
    bottom:16px;
    width:40px;
    height:40px;
  }
}
@media (max-width:520px){
  .related-grid{
    grid-template-columns:1fr;
  }
  .crumb{
    font-size:12px;
  }
  .logo-icon{
    width:30px;
    height:30px;
    font-size:15px;
  }
  .notfound-code{
    font-size:58px;
  }
}

/* roulang page: category1 */
:root {
            --bg: #F3F0EA;
            --surface: #FCFAF5;
            --ink: #101114;
            --text: #191919;
            --muted: #6E6A63;
            --line: #E2DED6;
            --brand: #D6F228;
            --accent: #FF6333;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-serif: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", serif;
            --font-mono: "SF Mono", "Roboto Mono", ui-monospace, monospace;
            --shadow-hover: 0 12px 40px rgba(16, 17, 20, 0.08);
            --radius-card: 6px;
            --radius-btn: 4px;
            --radius-tag: 999px;
            --header-h: 72px;
            --space-section: 96px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            padding-top: var(--header-h);
            -webkit-font-smoothing: antialiased;
        }

        body.no-scroll {
            overflow: hidden;
        }

        img {
            display: block;
            max-width: 100%;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input {
            font: inherit;
            border: 0;
            background: none;
            color: inherit;
        }

        ::selection {
            background: rgba(214, 242, 40, 0.4);
        }

        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: var(--space-section) 0;
        }

        .section-head {
            max-width: 860px;
            margin-bottom: 44px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-mono);
            font-size: 12px;
            letter-spacing: 0.08em;
            color: var(--muted);
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .eyebrow::before {
            content: "";
            width: 7px;
            height: 7px;
            background: var(--accent);
            flex: none;
        }

        .heading-title {
            font-size: 40px;
            line-height: 1.25;
            font-weight: 600;
            letter-spacing: 0;
            margin-bottom: 14px;
        }

        .section-head p {
            color: var(--muted);
            max-width: 720px;
        }

        .section-head.center p {
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            height: 48px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
            white-space: nowrap;
        }

        .btn:active {
            transform: scale(0.98);
        }

        .btn-primary {
            background: var(--brand);
            color: var(--ink);
        }

        .btn-primary:hover {
            background: var(--ink);
            color: #fff;
        }

        .btn-outline-white {
            border: 1px solid rgba(243, 240, 234, 0.6);
            color: #F3F0EA;
        }

        .btn-outline-white:hover {
            border-color: var(--brand);
            color: var(--brand);
        }

        .btn-outline {
            border: 1px solid var(--ink);
            color: var(--ink);
            background: transparent;
        }

        .btn-outline:hover {
            border-color: var(--brand);
            color: var(--ink);
            background: rgba(214, 242, 40, 0.2);
        }

        .btn-sm {
            height: 40px;
            padding: 0 18px;
            font-size: 14px;
        }

        .card-tag {
            display: inline-flex;
            align-items: center;
            min-height: 26px;
            padding: 0 12px;
            border: 1px solid var(--line);
            border-radius: var(--radius-tag);
            font-size: 12px;
            line-height: 1;
            color: var(--muted);
            background: var(--surface);
        }

        .card-tag.brand-tag {
            border-color: rgba(214, 242, 40, 0.6);
            color: #395000;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: var(--ink);
            z-index: 100;
            border-bottom: 1px solid rgba(243, 240, 234, 0.1);
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            height: var(--header-h);
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 9px;
            flex: none;
            color: #F3F0EA;
        }

        .logo-mark {
            width: 30px;
            height: 30px;
            border-radius: 6px;
            background: var(--brand);
            color: var(--ink);
            display: grid;
            place-items: center;
            font-size: 16px;
            font-weight: 700;
        }

        .logo-name {
            display: block;
            font-size: 17px;
            font-weight: 600;
            color: #F3F0EA;
            line-height: 1.1;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-tag {
            display: block;
            font-size: 11px;
            color: rgba(243, 240, 234, 0.55);
            margin-top: 3px;
            line-height: 1.1;
            letter-spacing: 0.06em;
        }

        .main-nav {
            display: flex;
            align-items: stretch;
            margin-left: auto;
            margin-right: 0;
            height: var(--header-h);
            gap: 2px;
            overflow: visible;
            scrollbar-width: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .main-nav a {
            position: relative;
            display: flex;
            align-items: center;
            padding: 0 16px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(243, 240, 234, 0.82);
            white-space: nowrap;
            transition: color 0.2s;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 14px;
            height: 2px;
            background: var(--brand);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.2s ease;
        }

        .main-nav a:hover {
            color: #fff;
        }

        .main-nav a.active {
            color: #fff;
        }

        .main-nav a.active::after,
        .main-nav a:hover::after {
            transform: scaleX(1);
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 10px;
            flex: none;
            margin-left: auto;
        }

        .search-form {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-form svg {
            position: absolute;
            left: 12px;
            width: 15px;
            height: 15px;
            color: rgba(243, 240, 234, 0.6);
            pointer-events: none;
        }

        .search-form input {
            width: 170px;
            height: 38px;
            background: rgba(243, 240, 234, 0.14);
            border: 1px solid transparent;
            border-radius: 4px;
            color: #fff;
            font-size: 13px;
            padding: 0 12px 0 34px;
            transition: background 0.2s, border-color 0.2s;
        }

        .search-form input::placeholder {
            color: rgba(243, 240, 234, 0.5);
        }

        .search-form input:focus {
            background: #fff;
            color: var(--ink);
            border-color: var(--brand);
            outline: 0;
        }

        .search-form input:focus::placeholder {
            color: rgba(25, 25, 25, 0.5);
        }

        .btn-nav-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 36px;
            padding: 0 15px;
            border: 1px solid rgba(243, 240, 234, 0.35);
            border-radius: 4px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(243, 240, 234, 0.9);
            white-space: nowrap;
            transition: border-color 0.2s, color 0.2s;
        }

        .btn-nav-ghost:hover {
            border-color: var(--brand);
            color: var(--brand);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 36px;
            padding: 0 18px;
            background: var(--brand);
            border-radius: 4px;
            color: var(--ink);
            font-size: 13px;
            font-weight: 600;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            background: #fff;
            color: var(--ink);
        }

        .category-hero {
            position: relative;
            background-color: var(--ink);
            background-image: linear-gradient(90deg, rgba(16, 17, 20, 0.82), rgba(16, 17, 20, 0.42)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 30%;
            color: #F3F0EA;
            overflow: hidden;
        }

        .category-hero .hero-inner {
            position: relative;
            z-index: 2;
            padding-top: 104px;
            padding-bottom: 96px;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(243, 240, 234, 0.6);
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: rgba(243, 240, 234, 0.82);
            transition: color 0.2s;
        }

        .breadcrumb a:hover {
            color: var(--brand);
        }

        .hero-kicker {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-mono);
            font-size: 12px;
            color: rgba(243, 240, 234, 0.75);
            letter-spacing: 0.1em;
            text-transform: uppercase;
            margin-bottom: 18px;
        }

        .hero-kicker::before {
            content: "";
            width: 8px;
            height: 8px;
            background: var(--accent);
        }

        .hero-title {
            max-width: 900px;
            font-family: var(--font-serif);
            font-size: clamp(38px, 5.4vw, 64px);
            line-height: 1.16;
            font-weight: 600;
            letter-spacing: 0;
            margin-bottom: 22px;
            color: #fff;
        }

        .hero-sub {
            max-width: 720px;
            font-size: 16px;
            line-height: 1.9;
            color: rgba(243, 240, 234, 0.82);
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            margin-bottom: 28px;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            font-size: 14px;
            color: rgba(243, 240, 234, 0.6);
        }

        .hero-meta strong {
            font-family: var(--font-mono);
            font-weight: 600;
            color: var(--brand);
            font-size: 15px;
        }

        .scroll-cue {
            position: absolute;
            left: 50%;
            bottom: 20px;
            transform: translateX(-50%);
            width: 26px;
            height: 40px;
            border: 1px solid rgba(243, 240, 234, 0.35);
            border-radius: 999px;
            display: flex;
            justify-content: center;
            padding-top: 8px;
            z-index: 3;
            transition: border-color 0.2s;
        }

        .scroll-cue::after {
            content: "";
            width: 3px;
            height: 8px;
            border-radius: 4px;
            background: var(--brand);
            animation: cueMove 1.6s ease-in-out infinite;
        }

        @keyframes cueMove {
            0%,
            100% {
                transform: translateY(0);
                opacity: 0.9;
            }
            50% {
                transform: translateY(8px);
                opacity: 0.2;
            }
        }

        .lsit-scope .section {
            padding-top: var(--space-section);
        }

        .scope-list {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            display: flex;
            flex-direction: column;
        }

        .scope-row {
            display: grid;
            grid-template-columns: 72px 132px minmax(0, 1fr) auto;
            align-items: center;
            gap: 22px;
            padding: 26px 28px;
            border-bottom: 1px solid var(--line);
            transition: background 0.2s;
        }

        .scope-row:last-child {
            border-bottom: 0;
        }

        .scope-row:hover {
            background: #F7F4EE;
        }

        .scope-index {
            font-family: var(--font-mono);
            font-size: 20px;
            font-weight: 600;
            color: var(--brand);
            -webkit-text-stroke: 1px #8A9D0E;
        }

        .scope-thumb {
            width: 132px;
            height: 90px;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: #EAE6DF;
        }

        .scope-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .scope-body h3 {
            font-size: 21px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text);
            margin-bottom: 6px;
        }

        .scope-body p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.75;
            max-width: 680px;
        }

        .scope-body .scope-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 10px;
        }

        .scope-arrow {
            font-family: var(--font-mono);
            font-size: 15px;
            color: var(--muted);
        }

        .value-section {
            background: var(--bg);
        }

        .value-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .value-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        .value-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(214, 242, 40, 0.7);
        }

        .value-icon {
            width: 40px;
            height: 40px;
            border-radius: 6px;
            background: rgba(214, 242, 40, 0.16);
            color: var(--ink);
            display: grid;
            place-items: center;
            margin-bottom: 18px;
        }

        .value-icon svg {
            width: 20px;
            height: 20px;
        }

        .value-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
        }

        .value-card p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
        }

        .audience-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 32px;
        }

        .audience-panel {
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            background: var(--surface);
            padding: 30px 32px;
        }

        .audience-panel h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .audience-panel p {
            color: var(--muted);
            font-size: 15px;
        }

        .audience-list {
            display: grid;
            gap: 14px;
            margin-top: 10px;
        }

        .audience-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }

        .audience-list li::before {
            content: "✓";
            color: var(--brand);
            flex: none;
            width: 18px;
            height: 18px;
            border: 1px solid rgba(214, 242, 40, 0.7);
            border-radius: 50%;
            display: grid;
            place-items: center;
            font-size: 12px;
            font-weight: 700;
            margin-top: 4px;
            background: rgba(214, 242, 40, 0.15);
        }

        .process-section {
            background: var(--ink);
            color: #F3F0EA;
        }

        .process-section .section-head p {
            color: rgba(243, 240, 234, 0.6);
        }

        .process-section .eyebrow::before {
            background: var(--brand);
        }

        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .step-card {
            position: relative;
            border: 1px solid rgba(243, 240, 234, 0.18);
            border-radius: var(--radius-card);
            background: rgba(243, 240, 234, 0.04);
            padding: 30px 24px 26px;
            min-height: 190px;
            transition: border-color 0.2s, background 0.2s;
        }

        .step-card:hover {
            border-color: rgba(214, 242, 40, 0.6);
            background: rgba(243, 240, 234, 0.07);
        }

        .step-no {
            font-family: var(--font-mono);
            font-size: 15px;
            color: var(--brand);
            display: block;
            margin-bottom: 50px;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: #F3F0EA;
        }

        .step-card p {
            color: rgba(243, 240, 234, 0.6);
            font-size: 14px;
            line-height: 1.75;
        }

        .process-cta {
            margin-top: 40px;
            text-align: center;
        }

        .cta-panel {
            border: 1px solid var(--line);
            background: var(--surface);
            border-radius: var(--radius-card);
            padding: 42px 36px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .cta-panel h2 {
            font-size: 30px;
            font-weight: 600;
            color: var(--text);
            max-width: 680px;
            margin-bottom: 12px;
        }

        .cta-panel p {
            color: var(--muted);
            max-width: 560px;
            margin-bottom: 28px;
        }

        .cta-panel .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        .faq-section {
            background: var(--bg);
        }

        .faq-panel {
            max-width: 900px;
            margin: 0 auto 40px;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            overflow: hidden;
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
            transition: background 0.2s;
        }

        .faq-item:last-child {
            border-bottom: 0;
        }

        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 22px 28px;
            list-style: none;
            cursor: pointer;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-q {
            font-size: 14px;
            font-family: var(--font-mono);
            color: var(--brand);
            font-weight: 600;
            margin-right: 10px;
        }

        .faq-question {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            transition: color 0.2s;
        }

        .faq-item summary:hover .faq-question {
            color: var(--text);
            text-decoration: underline;
            text-decoration-color: var(--brand);
            text-underline-offset: 4px;
        }

        .faq-icon {
            width: 22px;
            height: 22px;
            border: 1px solid var(--line);
            border-radius: 50%;
            display: grid;
            place-items: center;
            color: var(--muted);
            flex: none;
            transition: transform 0.2s;
        }

        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
            color: var(--accent);
            border-color: var(--accent);
        }

        .faq-answer {
            padding: 0 28px 24px 64px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.85;
        }

        .faq-exit {
            text-align: center;
            color: var(--muted);
        }

        .faq-exit a {
            color: var(--ink);
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: var(--line);
        }

        .faq-exit a:hover {
            color: var(--accent);
            text-decoration-color: var(--accent);
        }

        .explore-section {
            background: var(--bg);
            padding-top: 0;
        }

        .explore-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .explore-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            color: var(--text);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .explore-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .explore-cover {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: #E6E2DA;
        }

        .explore-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.2, 0, 0, 1);
        }

        .explore-card:hover .explore-cover img {
            transform: scale(1.03);
        }

        .explore-body {
            padding: 24px 24px 26px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .explore-body h3 {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.4;
        }

        .explore-body p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
        }

        .explore-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            margin-top: auto;
            padding-top: 12px;
        }

        .explore-link span {
            transition: transform 0.2s;
        }

        .explore-card:hover .explore-link span {
            transform: translateX(4px);
        }

        .site-footer {
            background: var(--ink);
            color: rgba(243, 240, 234, 0.72);
            padding: 48px 0 34px;
            border-top: 1px solid rgba(214, 242, 40, 0.35);
        }

        .site-footer a {
            color: rgba(243, 240, 234, 0.72);
            transition: color 0.2s;
        }

        .site-footer a:hover {
            color: var(--brand);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.25fr 1fr;
            gap: 48px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(243, 240, 234, 0.12);
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            max-width: 560px;
            font-size: 14px;
            line-height: 1.9;
            color: rgba(243, 240, 234, 0.6);
        }

        .footer-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px 28px;
            align-content: start;
        }

        .footer-nav a {
            font-size: 14px;
            line-height: 1.6;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px 24px;
            padding-top: 28px;
            font-size: 13px;
            color: rgba(243, 240, 234, 0.48);
        }

        @media (max-width: 1180px) {
            .search-form {
                display: none;
            }
        }

        @media (max-width: 1024px) {
            .value-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .step-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .explore-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .scope-row {
                grid-template-columns: 52px 112px minmax(0, 1fr) auto;
                gap: 16px;
                padding: 22px 20px;
            }

            .scope-thumb {
                width: 112px;
                height: 84px;
            }
        }

        @media (max-width: 880px) {
            .site-header {
                height: 60px;
            }

            body {
                padding-top: 60px;
            }

            .header-inner {
                height: 60px;
                gap: 6px;
            }

            .btn-nav-ghost {
                display: none;
            }

            .logo-mark {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }

            .logo-name {
                font-size: 15px;
            }

            .main-nav {
                margin-left: auto;
                max-width: calc(100vw - 132px);
                overflow-x: auto;
                overflow-y: hidden;
                height: 60px;
                align-items: center;
                -ms-overflow-style: none;
            }

            .main-nav a {
                height: auto;
                padding: 0 11px;
                flex: none;
                font-size: 14px;
            }

            .main-nav a::after {
                bottom: 7px;
            }

            .btn-nav-cta {
                height: 34px;
                padding: 0 14px;
            }

            .category-hero .hero-inner {
                padding-top: 72px;
                padding-bottom: 72px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 64px;
            }

            .heading-title {
                font-size: 28px;
                line-height: 1.32;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .audience-wrap {
                grid-template-columns: 1fr;
            }

            .scope-list {
                border-left: 0;
                border-right: 0;
                border-radius: 0;
            }

            .scope-row {
                display: flex;
                flex-wrap: wrap;
                align-items: flex-start;
                gap: 12px;
                padding: 20px 18px;
            }

            .scope-index {
                width: 42px;
                font-size: 16px;
                line-height: 80px;
            }

            .scope-thumb {
                width: 86px;
                height: 64px;
            }

            .scope-body {
                flex: 1 1 55%;
                min-width: 200px;
            }

            .scope-body h3 {
                font-size: 17px;
            }

            .scope-body p {
                font-size: 14px;
            }

            .scope-arrow {
                display: none;
            }

            .step-grid {
                grid-template-columns: 1fr;
            }

            .step-card {
                min-height: 0;
                padding: 22px 20px;
            }

            .step-no {
                margin-bottom: 24px;
            }

            .explore-grid {
                grid-template-columns: 1fr;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 24px;
            }

            .footer-nav {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 34px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .value-grid {
                grid-template-columns: 1fr;
            }

            .cta-panel {
                padding: 30px 20px;
            }

            .cta-panel h2 {
                font-size: 24px;
            }

            .footer-bottom {
                flex-direction: column;
            }

            .logo-tag {
                display: none;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

        .logo-text strong {
            display: block;
        }

        .logo-text small {
            display: block;
        }

        .site-footer .logo-text {
            font-size: 17px;
            color: #F3F0EA;
        }

/* roulang page: category2 */
:root{
  --bg:#F3F0EA;
  --surface:#FCFAF5;
  --ink:#101114;
  --text:#191919;
  --muted:#6E6A63;
  --line:#E2DED6;
  --brand:#D6F228;
  --accent:#FF6333;
  --radius:6px;
  --radius-md:10px;
  --shadow:0 12px 40px rgba(16,17,20,0.08);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
  --font-serif:"Songti SC","Noto Serif CJK SC","Source Han Serif SC",serif;
  --font-mono:"SF Mono","Roboto Mono",ui-monospace,monospace;
  --container:1280px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
ul,ol{list-style:none;}
::selection{background:rgba(214,242,40,0.4);}
::-webkit-scrollbar{width:6px;height:6px;}
::-webkit-scrollbar-track{background:#101114;}
::-webkit-scrollbar-thumb{background:rgba(252,250,245,0.45);border-radius:999px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}

/*========== Buttons ==========*/
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:4px;
  border:1px solid transparent;
  font-weight:600;
  font-size:15px;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
  text-align:center;
}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--brand);color:var(--ink);}
.btn-primary:hover{background:#101114;color:var(--surface);}
.btn-primary:focus-visible,.btn-secondary:focus-visible,.btn-light:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
.btn-secondary{background:transparent;border-color:#101114;color:#101114;}
.btn-secondary:hover{border-color:var(--brand);color:#2a2a2a;background:rgba(214,242,40,0.12);}
.btn-light{background:transparent;border-color:rgba(252,250,245,0.7);color:#fff;}
.btn-light:hover{border-color:var(--brand);color:var(--brand);}
.btn-sm{height:38px;padding:0 16px;font-size:13px;}

/*========== Header ==========*/
.site-header{
  background:var(--ink);
  color:#F3F0EA;
  position:sticky;
  top:0;
  z-index:60;
  border-bottom:1px solid rgba(252,250,245,0.1);
}
.header-inner{
  display:flex;
  align-items:center;
  height:72px;
  gap:28px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-icon{
  width:34px;
  height:34px;
  border-radius:8px;
  background:var(--brand);
  color:var(--ink);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  font-size:18px;
  line-height:1;
}
.logo-text{display:inline-flex;flex-direction:column;line-height:1.2;}
.logo-text strong{font-size:18px;font-weight:600;color:#fff;letter-spacing:.3px;}
.logo-text small{font-size:12px;color:rgba(243,240,234,0.6);margin-top:3px;}
.main-nav{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:26px;
}
.main-nav a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:rgba(243,240,234,0.78);
  white-space:nowrap;
  padding:26px 0 24px;
  transition:color .2s;
}
.main-nav a:hover{color:#fff;}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:14px;
  height:2px;
  width:100%;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}
.main-nav a.active{color:#fff;}
.main-nav a.active::after{transform:scaleX(1);}
.main-nav a:hover::after{transform:scaleX(1);}

/*========== Hero ==========*/
.page-hero{
  color:#F3F0EA;
  background:
    linear-gradient(110deg, rgba(16,17,20,0.94) 0%, rgba(16,17,20,0.78) 50%, rgba(16,17,20,0.45) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  background-color:#101114;
  padding:84px 0 80px;
  border-bottom:1px solid rgba(243,240,234,0.2);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(243,240,234,0.65);
  margin-bottom:44px;
}
.breadcrumb a{color:rgba(243,240,234,0.65);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{opacity:.5;}
.hero-eyebrow{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  font-family:var(--font-mono);
  letter-spacing:.08em;
  color:var(--brand);
  margin-bottom:16px;
}
.eyebrow-dot{
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--accent);
}
.page-hero h1{
  font-family:var(--font-serif);
  font-size:58px;
  font-weight:600;
  line-height:1.15;
  color:#fff;
  letter-spacing:1px;
}
.page-hero .lead{
  max-width:780px;
  margin-top:20px;
  font-size:16px;
  line-height:1.9;
  color:rgba(252,250,245,0.78);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
.hero-note{
  margin-top:16px;
  font-size:13px;
  color:rgba(243,240,234,0.5);
}
.scope-strip{
  background:var(--ink);
  border-bottom:1px solid rgba(252,250,245,0.1);
}
.scope-list{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:16px 30px;
  padding:18px 0;
}
.scope-item{
  display:flex;
  align-items:center;
  gap:8px;
  color:rgba(243,240,234,0.72);
  font-size:13px;
}
.scope-item i{
  width:6px;
  height:6px;
  background:var(--brand);
  border-radius:50%;
}
.scope-item strong{color:#F3F0EA;font-weight:500;}

/*========== Section headings ==========*/
.section-kicker{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--accent);
  margin-bottom:12px;
}
.section h2{
  font-size:34px;
  font-weight:600;
  line-height:1.25;
  margin-bottom:12px;
}
.sec-note{
  color:var(--muted);
  font-size:15px;
  max-width:720px;
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  align-items:flex-end;
  gap:20px;
  margin-bottom:44px;
}
.section-head .right-link{
  font-size:14px;
  font-weight:500;
  border-bottom:1px solid var(--brand);
  padding-bottom:2px;
}
.section-head .right-link:hover{color:var(--accent);border-color:var(--accent);}

/*========== Feature update ==========*/
.feature-panel{
  display:grid;
  grid-template-columns:1fr 1.15fr;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--surface);
  overflow:hidden;
  margin-bottom:32px;
}
.feature-img{
  min-height:300px;
  background:#D8D3C9;
}
.feature-img img{width:100%;height:100%;object-fit:cover;min-height:300px;}
.feature-body{padding:34px 38px;}
.feature-body .badge-feature{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--brand);
  color:var(--ink);
  font-size:12px;
  border-radius:999px;
  padding:5px 12px;
  margin-bottom:20px;
}
.feature-body h3{
  font-size:24px;
  line-height:1.4;
  margin-bottom:14px;
}
.feature-body p{color:var(--muted);font-size:15px;line-height:1.9;}
.feature-meta{
  margin-top:22px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}

/*========== Update track list ==========*/
.updates-bg{
  background:var(--bg);
}
.track-list{
  border-top:1px solid var(--line);
}
.track-item{
  display:grid;
  grid-template-columns:70px minmax(0,1fr) auto;
  gap:22px;
  align-items:start;
  padding:28px 24px;
  border-bottom:1px solid var(--line);
  background:rgba(252,250,245,0.6);
  transition:background .2s ease,transform .2s ease;
}
.track-item:hover{
  background:var(--surface);
  transform:translateY(-2px);
}
.track-num{
  font-family:var(--font-mono);
  font-size:20px;
  color:var(--brand);
}
.track-version{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--ink);
  border:1px solid var(--line);
  background:rgba(214,242,40,0.15);
  border-radius:999px;
  padding:3px 10px;
  display:inline-flex;
  align-items:center;
  margin-bottom:8px;
}
.track-item h3{
  font-size:20px;
  font-weight:600;
  line-height:1.5;
}
.track-item p{
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
  margin-top:10px;
  max-width:860px;
}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:14px;
}
.tag{
  display:inline-flex;
  align-items:center;
  border:1px solid var(--line);
  border-radius:999px;
  padding:3px 12px;
  font-size:12px;
  color:var(--muted);
}
.track-aside{
  min-width:130px;
  text-align:right;
  font-size:13px;
  color:var(--muted);
  line-height:1.8;
}
.update-time{display:block;font-family:var(--font-mono);}
.list-end-note{
  border:1px dashed var(--line);
  border-radius:var(--radius-md);
  padding:18px 24px;
  background:var(--surface);
  margin-top:22px;
  font-size:14px;
  color:var(--muted);
  text-align:center;
}
.list-end-note a{color:var(--ink);border-bottom:1px solid var(--brand);}
.list-end-note a:hover{color:var(--accent);}

/*========== Flow steps ==========*/
.flow-section{
  background:var(--ink);
  color:#F3F0EA;
}
.flow-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:50px;
}
.flow-card{
  border:1px solid rgba(243,240,234,0.18);
  border-radius:var(--radius-md);
  padding:28px 24px;
  background:rgba(252,250,245,0.03);
}
.flow-step{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--brand);
  letter-spacing:.08em;
}
.flow-item-title{
  font-size:19px;
  font-weight:600;
  margin-top:14px;
}
.flow-item-desc{
  color:rgba(243,240,234,0.65);
  font-size:14px;
  line-height:1.85;
  margin-top:12px;
}

/*========== FAQ ==========*/
.faq-wrap{
  border:1px solid var(--line);
  background:var(--surface);
  border-radius:var(--radius-md);
  padding:10px 32px;
  margin-top:20px;
}
.faq-item{
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  display:flex;
  align-items:center;
  gap:14px;
  list-style:none;
  cursor:pointer;
  font-size:17px;
  font-weight:600;
  transition:color .2s;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--ink);}
.faq-q{
  color:var(--accent);
  font-family:var(--font-mono);
  font-weight:600;
}
.faq-answer{
  color:var(--muted);
  font-size:15px;
  line-height:1.9;
  padding:16px 0 4px 42px;
}
.faq-answer a{color:var(--ink);border-bottom:1px solid var(--brand);}
.faq-answer a:hover{color:var(--accent);}

/*========== Explore ==========*/
.explore-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:40px;
}
.explore-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  overflow:hidden;
  transition:box-shadow .25s ease,transform .25s ease;
}
.explore-card:hover{
  box-shadow:var(--shadow);
  transform:translateY(-4px);
}
.explore-cover{
  height:184px;
  background:#D8D3C9;
}
.explore-cover img{width:100%;height:100%;object-fit:cover;}
.explore-body{padding:24px;}
.explore-body h3{
  font-size:20px;
  font-weight:600;
  margin-bottom:8px;
}
.explore-body p{
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
  min-height:75px;
}
.explore-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:14px;
  font-weight:600;
  font-size:14px;
  color:var(--ink);
  border-bottom:1px solid var(--brand);
  padding-bottom:2px;
}
.explore-link:hover{
  color:var(--accent);
  border-color:var(--accent);
}
.explore-link:hover .arr{
  transform:translateX(4px);
}
.arr{display:inline-block;transition:transform .22s ease;}

/*========== CTA strip ==========*/
.cta-box{
  border:1px solid var(--line);
  border-top:1px solid var(--brand);
  background:var(--surface);
  border-radius:var(--radius-md);
  padding:34px 38px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.cta-box h2{
  font-size:20px;
  font-weight:600;
}
.cta-box p{
  color:var(--muted);
  font-size:14px;
  margin-top:6px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.link-top{
  display:inline-flex;
  align-items:center;
  gap:4px;
  font-size:14px;
  color:var(--muted);
}
.link-top:hover{color:var(--ink);}
.copy-success .btn-secondary{
  background:var(--brand);
  border-color:var(--brand);
  color:var(--ink);
}

/*========== Footer ==========*/
.site-footer{
  background:var(--ink);
  color:#F3F0EA;
  margin-top:0;
}
.footer-top{
  display:flex;
  flex-wrap:wrap;
  gap:60px;
  padding:54px 0 40px;
  border-bottom:1px solid rgba(243,240,234,0.14);
}
.footer-brand{width:min(560px,100%);}
.footer-brand p{
  margin-top:22px;
  font-size:14px;
  line-height:1.9;
  color:rgba(243,240,234,0.6);
}
.footer-nav{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px 30px;
  margin-left:auto;
  align-content:start;
}
.footer-nav a{
  font-size:14px;
  color:rgba(243,240,234,0.74);
  transition:color .2s;
}
.footer-nav a:hover{color:var(--brand);}
.footer-bottom{
  padding:22px 0;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(243,240,234,0.48);
}

/*========== Responsive ==========*/
@media(max-width:1024px){
  .main-nav{gap:18px;}
  .main-nav a{font-size:14px;}
  .page-hero h1{font-size:46px;}
  .feature-panel{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:1fr 1fr;}
  .explore-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:768px){
  .section{padding:64px 0;}
  .header-inner{
    height:auto;
    flex-wrap:wrap;
    padding-top:14px;
    padding-bottom:0;
    gap:0;
  }
  .main-nav{
    order:3;
    width:100%;
    margin-left:-24px;
    margin-right:-24px;
    padding:0 24px;
    overflow-x:auto;
    gap:24px;
  }
  .main-nav a{
    padding:14px 0 12px;
  }
  .main-nav a::after{bottom:6px;}
  .page-hero{padding:56px 0;}
  .breadcrumb{margin-bottom:28px;}
  .page-hero h1{font-size:36px;}
  .features-grid{grid-template-columns:1fr;}
  .track-item{
    grid-template-columns:34px minmax(0,1fr);
    padding:24px 0;
  }
  .track-aside{
    grid-column:2;
    text-align:left;
  }
  .explore-grid{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:1fr;}
  .faq-wrap{padding:8px 20px;}
  .faq-answer{padding-left:0;}
  .cta-box{padding:26px 22px;}
  .footer-top{gap:40px;}
  .footer-nav{margin-left:0;}
}
@media(max-width:480px){
  .logo-text strong{font-size:15px;}
  .logo-text small{font-size:10px;}
  .page-hero h1{font-size:30px;}
  .section-head h2{font-size:26px;}
  .feature-body{padding:24px 22px;}
  .feature-body h3{font-size:20px;}
  .hero-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;width:100%;}
  .cta-actions .btn{width:100%;}
  .scope-list{gap:10px;}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto;}
}

/* roulang page: category3 */
:root {
            --bg: #F3F0EA;
            --surface: #FCFAF5;
            --ink: #101114;
            --text: #191919;
            --muted: #6E6A63;
            --line: #E2DED6;
            --brand: #D6F228;
            --accent: #FF6333;
            --deep-text: #F3F0EA;
            --deep-muted: rgba(243, 240, 234, 0.62);
            --deep-line: rgba(243, 240, 234, 0.18);
            --shadow: 0 12px 40px rgba(16, 17, 20, 0.08);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-serif: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", serif;
            --font-mono: "SF Mono", "Roboto Mono", ui-monospace, monospace;
            --radius: 6px;
            --radius-sm: 4px;
            --space-section: 96px;
        }

        *, *::before, *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg);
            color: var(--text);
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

        body,
        .site-footer,
        .site-header {
            width: 100%;
        }

        body,
        h1, h2, h3, p, ul, ol, figure, blockquote {
            margin: 0;
        }

        ul, ol {
            padding: 0;
            list-style: none;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font: inherit;
            border: 0;
            background: none;
            cursor: pointer;
        }

        input {
            font: inherit;
        }

        ::selection {
            background: rgba(214, 242, 40, 0.4);
            color: var(--ink);
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .skip-link {
            position: absolute;
            left: -999px;
            top: 8px;
            z-index: 200;
            background: var(--ink);
            color: var(--deep-text);
            padding: 8px 16px;
            border-radius: 4px;
        }

        .skip-link:focus {
            left: 8px;
            color: var(--brand);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 72px;
            background: var(--ink);
            border-bottom: 1px solid var(--deep-line);
            color: var(--deep-text);
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 18px;
            height: 72px;
            position: relative;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            margin-right: 8px;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand);
            color: var(--ink);
            font-size: 18px;
            font-weight: 700;
            font-family: var(--font-serif);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-text strong {
            color: #fff;
            font-size: 17px;
            font-weight: 600;
            white-space: nowrap;
        }

        .logo-text small {
            margin-top: 2px;
            color: rgba(243, 240, 234, 0.58);
            font-size: 12px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 2px;
            margin-left: 12px;
            flex: 1;
            min-width: 0;
        }

        .main-nav a {
            position: relative;
            padding: 10px 13px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(243, 240, 234, 0.72);
            transition: color 0.2s ease;
            white-space: nowrap;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 13px;
            right: 13px;
            bottom: 2px;
            height: 2px;
            background: var(--brand);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.24s ease;
        }

        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: #fff;
        }

        .main-nav a:hover::after,
        .main-nav a:focus-visible::after {
            transform: scaleX(1);
        }

        .main-nav a.active {
            color: #fff;
        }

        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
            flex-shrink: 0;
        }

        .search-form {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 196px;
            height: 36px;
            padding: 0 10px;
            border: 1px solid rgba(243, 240, 234, 0.24);
            border-radius: 4px;
            background: rgba(255, 255, 255, 0.08);
            transition: background 0.2s ease, border-color 0.2s ease, width 0.2s ease;
        }

        .search-form:focus-within {
            width: 224px;
            background: #fff;
            border-color: var(--brand);
        }

        .search-form svg {
            width: 15px;
            height: 15px;
            color: rgba(243, 240, 234, 0.72);
            flex-shrink: 0;
            transition: color 0.2s ease;
        }

        .search-form:focus-within svg {
            color: var(--text);
        }

        .search-form input {
            width: 100%;
            min-width: 0;
            border: 0;
            outline: none;
            background: transparent;
            color: var(--deep-text);
            font-size: 13px;
        }

        .search-form:focus-within input {
            color: var(--text);
        }

        .search-form input::placeholder {
            color: rgba(243, 240, 234, 0.58);
        }

        .search-form:focus-within input::placeholder {
            color: rgba(25, 25, 25, 0.55);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.12s ease, box-shadow 0.2s ease;
            gap: 8px;
            white-space: nowrap;
        }

        .btn:active {
            transform: scale(0.98);
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--brand);
            color: var(--ink);
        }

        .btn-primary:hover {
            background: var(--ink);
            color: #fff;
            border-color: var(--ink);
        }

        .btn-secondary {
            background: transparent;
            color: var(--black, var(--text));
            border-color: rgba(25, 25, 25, 0.85);
        }

        .btn-secondary:hover {
            border-color: var(--brand);
            color: #4a5a05;
        }

        .btn-on-dark {
            background: transparent;
            color: var(--deep-text);
            border-color: rgba(243, 240, 234, 0.8);
        }

        .btn-on-dark:hover {
            border-color: var(--brand);
            color: var(--brand);
        }

        .btn-sm {
            height: 36px;
            padding: 0 16px;
            font-size: 14px;
            border-radius: var(--radius-sm);
        }

        .btn-nav {
            background: var(--brand);
            color: var(--ink);
        }

        .btn-nav:hover {
            background: #fff;
            color: var(--ink);
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border: 1px solid rgba(243, 240, 234, 0.22);
            border-radius: var(--radius-sm);
            color: var(--deep-text);
        }

        .nav-toggle svg {
            width: 18px;
            height: 18px;
        }

        .cat-hero {
            position: relative;
            color: var(--deep-text);
            background: var(--ink);
            overflow: hidden;
        }

        .cat-hero__bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            opacity: 0.62;
        }

        .cat-hero__bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(16, 17, 20, 0.92) 0%, rgba(16, 17, 20, 0.46) 62%, rgba(16, 17, 20, 0.2) 100%);
        }

        .cat-hero__content {
            position: relative;
            z-index: 2;
            padding-top: 64px;
            padding-bottom: 72px;
            max-width: 920px;
            margin-left: auto;
            margin-right: auto;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 28px;
            font-size: 13px;
            color: rgba(243, 240, 234, 0.62);
        }

        .breadcrumb a {
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--brand);
        }

        .breadcrumb .sep {
            opacity: 0.5;
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
            font-family: var(--font-mono);
            font-size: 12px;
            letter-spacing: 0.08em;
            color: var(--brand);
        }

        .hero-kicker .dot {
            width: 7px;
            height: 7px;
            background: var(--accent);
            border-radius: 2px;
        }

        .cat-hero h1 {
            font-size: clamp(36px, 5vw, 60px);
            font-family: var(--font-serif);
            font-weight: 600;
            line-height: 1.16;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .cat-hero .lead {
            margin-top: 20px;
            max-width: 720px;
            font-size: 17px;
            line-height: 1.9;
            color: rgba(243, 240, 234, 0.88);
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 32px;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 44px;
            padding-top: 24px;
            border-top: 1px solid var(--deep-line);
        }

        .meta-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .meta-value {
            font-family: var(--font-mono);
            font-size: 18px;
            color: var(--brand);
        }

        .meta-label {
            font-size: 13px;
            color: rgba(243, 240, 234, 0.62);
        }

        .category-note {
            background: var(--surface);
            border-bottom: 1px solid var(--line);
            padding: 52px 0;
        }

        .note-layout {
            display: grid;
            grid-template-columns: 180px 1fr;
            gap: 40px;
            align-items: start;
        }

        .section-label {
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 12px;
            letter-spacing: 0.06em;
            color: var(--muted);
            text-transform: none;
        }

        .note-copy {
            max-width: 860px;
            font-size: 17px;
            line-height: 1.95;
            color: var(--text);
        }

        .note-copy strong {
            color: var(--text);
            font-weight: 600;
        }

        .section-pad {
            padding: var(--space-section) 0;
        }

        .media-section {
            background: var(--bg);
            padding: var(--space-section) 0;
        }

        .section-head {
            max-width: 880px;
            margin-bottom: 44px;
        }

        .eyebrow {
            display: block;
            font-family: var(--font-mono);
            font-size: 12px;
            letter-spacing: 0.08em;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 30px;
            line-height: 1.3;
            font-weight: 600;
            color: var(--text);
            letter-spacing: 0.01em;
        }

        .section-head p {
            margin-top: 14px;
            max-width: 760px;
            color: var(--muted);
            font-size: 16px;
            line-height: 1.85;
        }

        .media-card-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 24px;
        }

        .media-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform 0.4s cubic-bezier(0.2, 0, 0, 1), box-shadow 0.4s ease, border-color 0.3s ease;
        }

        .media-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 14px 40px rgba(16, 17, 20, 0.08);
            border-color: rgba(16, 17, 20, 0.2);
        }

        .media-card:focus-within {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .media-cover {
            aspect-ratio: 4 / 3;
            background: #dad4ca;
            overflow: hidden;
            position: relative;
        }

        .media-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.2, 0, 0, 1);
        }

        .media-card:hover .media-cover img {
            transform: scale(1.03);
        }

        .media-cover .corner-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: var(--ink);
            color: var(--brand);
            font-size: 12px;
            line-height: 1;
            padding: 7px 10px;
            border-radius: 999px;
            font-family: var(--font-mono);
        }

        .media-body {
            display: flex;
            flex-direction: column;
            flex: 1;
            padding: 22px;
            gap: 10px;
        }

        .category-tag {
            display: inline-flex;
            align-self: flex-start;
            padding: 4px 10px;
            border: 1px solid var(--line);
            border-radius: 999px;
            font-size: 12px;
            color: var(--muted);
            background: var(--bg);
        }

        .media-body h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
            margin: 0;
        }

        .media-body .abstract {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .media-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 14px;
            border-top: 1px solid var(--line);
            font-size: 13px;
            color: var(--muted);
        }

        .media-meta time {
            font-family: var(--font-mono);
        }

        .go-link {
            font-weight: 500;
            color: var(--text);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .go-link i {
            font-style: normal;
            display: inline-block;
            transition: transform 0.2s ease;
        }

        .media-card:hover .go-link i {
            transform: translateX(4px);
        }

        .value-panel {
            background: var(--ink);
            color: var(--deep-text);
            padding: var(--space-section) 0;
        }

        .value-panel .section-head h2 {
            color: #fff;
        }

        .value-panel .section-head p {
            color: rgba(243, 240, 234, 0.64);
        }

        .value-panel .eyebrow {
            color: var(--brand);
        }

        .value-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 24px;
            margin-top: 36px;
        }

        .value-item {
            border-top: 1px solid var(--deep-line);
            padding-top: 22px;
        }

        .value-item .value-num {
            display: block;
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--brand);
            margin-bottom: 12px;
        }

        .value-item h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }

        .value-item p {
            color: rgba(243, 240, 234, 0.68);
            font-size: 14px;
            line-height: 1.75;
        }

        .read-guide {
            background: var(--bg);
            padding: var(--space-section) 0;
        }

        .read-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
        }

        .read-col {
            border-top: 2px solid var(--ink);
            padding-top: 24px;
        }

        .read-col h2 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 22px;
            color: var(--text);
        }

        .audience-list li,
        .step-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 14px;
            color: #3a3a3a;
            font-size: 15px;
            line-height: 1.8;
        }

        .audience-list li::before {
            content: "";
            position: absolute;
            left: 2px;
            top: 14px;
            width: 9px;
            height: 9px;
            background: var(--brand);
            border: 2px solid var(--brand);
            border-radius: 2px;
        }

        .step-list {
            counter-reset: step;
        }

        .step-list li {
            counter-increment: step;
        }

        .step-list li::before {
            content: "0" counter(step);
            position: absolute;
            left: 0;
            top: 2px;
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--accent);
        }

        .section-faq {
            background: var(--surface);
            padding: var(--space-section) 0;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .faq-head {
            max-width: 860px;
        }

        .faq-list {
            max-width: 860px;
            border-top: 1px solid var(--ink);
            margin-top: 36px;
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
        }

        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            padding: 20px 4px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            transition: color 0.2s ease;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            color: var(--ink);
        }

        .faq-item summary::after {
            content: "+";
            margin-left: auto;
            font-family: var(--font-mono);
            font-size: 20px;
            color: var(--muted);
            transition: transform 0.2s ease, color 0.2s ease;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
            color: var(--accent);
        }

        .faq-qmark {
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--accent);
        }

        .faq-body {
            max-width: 820px;
            margin: 0 0 24px 0;
            padding: 0 4px 0 48px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.9;
        }

        .faq-outro {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            max-width: 860px;
            margin-top: 28px;
            padding: 20px 0;
            border-bottom: 1px solid var(--line);
        }

        .faq-outro p {
            color: var(--muted);
            font-size: 15px;
        }

        .cta-band {
            background: var(--bg);
            padding: var(--space-section) 0;
        }

        .cta-panel {
            border: 1px solid var(--line);
            background: var(--surface);
            border-radius: var(--radius);
            padding: 34px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 36px;
            flex-wrap: wrap;
        }

        .cta-panel h2 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .cta-panel p {
            color: var(--muted);
            font-size: 15px;
            max-width: 560px;
        }

        .cta-actions {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .btn-fav.is-faved {
            background: var(--accent);
            color: #fff;
        }

        .btn-fav.is-faved .fav-star {
            color: #fff;
        }

        .fav-star {
            color: var(--accent);
        }

        .copy-success {
            color: var(--brand);
            background: var(--ink);
        }

        .btn-text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 4px;
            color: var(--text);
            font-weight: 500;
            font-size: 14px;
            border-bottom: 1px solid transparent;
            transition: border-color 0.2s ease, color 0.2s ease;
        }

        .btn-text-link:hover {
            border-color: var(--brand);
            color: #4a5a05;
        }

        .more-section {
            padding: 96px 0 100px;
            background: var(--bg);
        }

        .more-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 24px;
            margin-top: 36px;
        }

        .more-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 26px;
            display: block;
            position: relative;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .more-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            border-color: rgba(16, 17, 20, 0.24);
        }

        .more-card .more-index {
            display: block;
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--brand);
            margin-bottom: 16px;
        }

        .more-card strong {
            display: block;
            font-size: 19px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
        }

        .more-card p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .more-card .more-arrow {
            margin-top: 18px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            font-size: 14px;
        }

        .more-card .more-arrow::after {
            content: "→";
            transition: transform 0.2s ease;
        }

        .more-card:hover .more-arrow::after {
            transform: translateX(4px);
        }

        .site-footer {
            background: var(--ink);
            color: var(--deep-text);
            padding: 64px 0 28px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--deep-line);
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand > p {
            max-width: 540px;
            color: rgba(243, 240, 234, 0.6);
            font-size: 14px;
            line-height: 1.9;
            margin-top: 4px;
        }

        .footer-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px 20px;
            align-content: start;
        }

        .footer-nav a {
            color: rgba(243, 240, 234, 0.7);
            font-size: 14px;
            padding: 4px 0;
            transition: color 0.2s ease;
        }

        .footer-nav a:hover {
            color: var(--brand);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 22px;
            font-size: 13px;
            color: rgba(243, 240, 234, 0.45);
        }

        .back-top {
            position: fixed;
            right: 24px;
            bottom: 28px;
            z-index: 90;
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--ink);
            background: var(--ink);
            color: var(--brand);
            border-radius: 6px;
            box-shadow: 0 6px 18px rgba(16, 17, 20, 0.12);
            transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
        }

        .back-top:hover {
            background: var(--brand);
            color: var(--ink);
            transform: translateY(-2px);
        }

        .back-top svg {
            width: 18px;
            height: 18px;
        }

        @media (max-width: 1080px) {
            .search-form {
                display: none;
            }

            .header-inner {
                gap: 8px;
            }

            .main-nav a {
                padding: 10px 9px;
                font-size: 14px;
            }
        }

        @media (max-width: 900px) {
            .site-header,
            .header-inner {
                height: 60px;
            }

            .header-inner {
                gap: 8px;
            }

            .logo-text small {
                display: none;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--ink);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                margin-left: 0;
                padding: 8px 16px 16px;
                border-top: 1px solid var(--deep-line);
                box-shadow: 0 18px 40px rgba(16, 17, 20, 0.3);
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                padding: 14px 8px;
                border-bottom: 1px solid var(--deep-line);
                font-size: 16px;
            }

            .main-nav a::after {
                left: 8px;
                right: auto;
                width: 24px;
                bottom: 6px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .btn-nav {
                font-size: 13px;
                padding: 0 12px;
            }

            .cat-hero__content {
                padding-top: 40px;
                padding-bottom: 56px;
            }

            .hero-meta {
                gap: 22px;
            }

            .value-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            .read-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
            }

            .footer-top {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 760px) {
            :root {
                --space-section: 64px;
            }

            .container {
                padding: 0 18px;
            }

            .header-actions {
                gap: 6px;
            }

            .header-actions .btn-sm {
                padding: 0 10px;
            }

            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 16px;
            }

            .logo-text strong {
                font-size: 15px;
            }

            .cat-hero h1 {
                font-size: 34px;
            }

            .cat-hero .lead {
                font-size: 15px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .note-layout {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .media-card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .value-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .more-grid {
                grid-template-columns: 1fr;
            }

            .faq-outro {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-panel {
                padding: 24px 20px;
            }

            .cta-actions {
                width: 100%;
            }

            .cta-actions .btn {
                flex: 1;
            }

            .footer-nav {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .hero-meta {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .btn-nav {
                display: none;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }

            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
            }

            .media-card,
            .more-card,
            .back-top {
                transition: none;
            }
        }

/* roulang page: category4 */
*,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html,
        body {
            margin: 0;
            padding: 0;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        :root {
            --bg: #F3F0EA;
            --surface: #FCFAF5;
            --ink: #101114;
            --text: #191919;
            --muted: #6E6A63;
            --line: #E2DED6;
            --brand: #D6F228;
            --accent: #FF6333;
            --radius-sm: 2px;
            --radius: 6px;
            --radius-pill: 999px;
            --shadow-1: 0 6px 24px rgba(16, 17, 20, .06);
            --shadow-2: 0 12px 40px rgba(16, 17, 20, .08);
            --font-serif: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", serif;
            --font-mono: "SF Mono", "Roboto Mono", ui-monospace, monospace;
            --container: 1280px;
        }
        ::selection {
            background: rgba(214, 242, 40, .45);
        }
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button,
        input {
            font: inherit;
        }
        ul,
        ol,
        p,
        figure,
        h1,
        h2,
        h3 {
            margin: 0;
            padding: 0;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 clamp(20px, 4vw, 48px);
        }
        .section-block {
            padding: 88px 0;
        }
        .section-overline,
        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .04em;
            color: var(--muted);
            text-transform: uppercase;
        }
        .section-overline::before {
            content: "";
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 2px;
        }
        .section-kicker {
            color: var(--muted);
        }
        .section-kicker::after {
            content: "";
            width: 28px;
            height: 1px;
            background: var(--muted);
        }
        .section-title {
            font-size: 28px;
            line-height: 1.45;
            font-weight: 600;
            margin-top: 10px;
            letter-spacing: 0;
        }
        .text-link {
            color: var(--ink);
            text-decoration: underline;
            text-decoration-color: var(--line);
            text-decoration-thickness: 2px;
            text-underline-offset: 4px;
            font-weight: 600;
            transition: color .2s ease, text-decoration-color .2s ease;
        }
        .text-link:hover {
            color: #4F6F00;
            text-decoration-color: var(--brand);
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 80;
            background: var(--ink);
            color: #F3F0EA;
            border-bottom: 1px solid rgba(243, 240, 234, .08);
        }
        .header-inner {
            min-height: 72px;
            display: flex;
            align-items: center;
            gap: 18px;
            padding-top: 8px;
            padding-bottom: 8px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: var(--brand);
            color: var(--ink);
            font-weight: 800;
            font-size: 18px;
        }
        .logo-text {
            display: inline-flex;
            flex-direction: column;
            line-height: 1.25;
        }
        .logo-text strong {
            font-size: 17px;
            color: #fff;
            letter-spacing: .01em;
        }
        .logo-text small {
            font-size: 12px;
            color: rgba(243, 240, 234, .58);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
            flex: 1;
            justify-content: space-between;
            min-width: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 2px;
            flex-wrap: nowrap;
        }
        .main-nav a {
            position: relative;
            padding: 10px 12px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(243, 240, 234, .72);
            border-radius: var(--radius-sm);
            white-space: nowrap;
            transition: color .2s ease;
        }
        .main-nav a:hover {
            color: #fff;
        }
        .main-nav a:hover::after {
            width: calc(100% - 24px);
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 2px;
            height: 2px;
            width: 0;
            background: var(--brand);
            transition: width .2s ease;
        }
        .main-nav a.active {
            color: #fff;
        }
        .main-nav a.active::after {
            width: calc(100% - 24px);
        }
        .header-tools {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(243, 240, 234, .1);
            border: 1px solid rgba(243, 240, 234, .12);
            border-radius: var(--radius-pill);
            padding: 0 14px;
            height: 38px;
            width: 200px;
            transition: background .2s ease, border-color .2s ease;
        }
        .header-search:focus-within {
            background: #fff;
            border-color: var(--brand);
        }
        .header-search svg {
            color: rgba(243, 240, 234, .8);
            flex-shrink: 0;
        }
        .header-search:focus-within svg {
            color: var(--ink);
        }
        .header-search input {
            width: 100%;
            min-width: 0;
            background: transparent;
            border: 0;
            outline: none;
            color: #F3F0EA;
            font-size: 14px;
        }
        .header-search input::placeholder {
            color: rgba(243, 240, 234, .6);
        }
        .header-search:focus-within input {
            color: var(--ink);
        }
        .header-search:focus-within input::placeholder {
            color: var(--muted);
        }
        .header-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 38px;
            padding: 0 16px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: background .2s ease, border-color .2s ease, color .2s ease, transform .2s ease;
        }
        .header-btn:active {
            transform: scale(.98);
        }
        .header-btn-ghost {
            border: 1px solid rgba(243, 240, 234, .45);
            color: #F3F0EA;
            background: transparent;
        }
        .header-btn-ghost:hover {
            border-color: var(--brand);
            color: var(--brand);
        }
        .header-btn-solid {
            background: var(--brand);
            border: 1px solid var(--brand);
            color: var(--ink);
        }
        .header-btn-solid:hover {
            background: transparent;
            color: #fff;
            border-color: var(--brand);
        }
        .menu-toggle {
            display: none;
            margin-left: auto;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: 1px solid rgba(243, 240, 234, .25);
            border-radius: var(--radius-sm);
            cursor: pointer;
        }
        .menu-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: #F3F0EA;
            border-radius: 2px;
            transition: transform .25s ease, opacity .2s ease;
        }
        .site-header.menu-open .menu-toggle span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .site-header.menu-open .menu-toggle span:nth-child(2) {
            opacity: 0;
        }
        .site-header.menu-open .menu-toggle span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Category hero ===== */
        .category-hero {
            background:
                linear-gradient(105deg, rgba(16, 17, 20, .94) 0%, rgba(16, 17, 20, .75) 36%, rgba(16, 17, 20, .34) 75%, rgba(16, 17, 20, .68) 100%),
                url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            color: #F3F0EA;
            min-height: 460px;
            display: flex;
            align-items: center;
            padding: 72px 0 64px;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: rgba(243, 240, 234, .62);
            margin-bottom: 28px;
        }
        .breadcrumb a {
            color: rgba(243, 240, 234, .8);
            transition: color .2s ease;
        }
        .breadcrumb a:hover {
            color: var(--brand);
        }
        .breadcrumb i {
            opacity: .5;
            font-style: normal;
        }
        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(16, 17, 20, .5);
            border: 1px solid var(--brand);
            color: var(--brand);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .1em;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 22px;
        }
        .hero-kicker i {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }
        .category-hero h1 {
            font-size: 56px;
            line-height: 1.15;
            font-weight: 700;
            letter-spacing: 0;
            max-width: 760px;
            margin-bottom: 18px;
        }
        .hero-tagline {
            max-width: 620px;
            font-size: 18px;
            line-height: 1.8;
            color: rgba(243, 240, 234, .82);
            margin-bottom: 30px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 38px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 0 22px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: background .2s ease, border-color .2s ease, color .2s ease, transform .2s ease;
            text-align: center;
            white-space: nowrap;
        }
        .btn:active {
            transform: scale(.98);
        }
        .btn-primary {
            background: var(--brand);
            color: var(--ink);
            border-color: var(--brand);
        }
        .btn-primary:hover {
            background: transparent;
            color: #fff;
            border-color: var(--brand);
        }
        .btn-light-outline {
            background: transparent;
            border-color: rgba(243, 240, 234, .65);
            color: #F3F0EA;
        }
        .btn-light-outline:hover {
            background: var(--brand);
            border-color: var(--brand);
            color: var(--ink);
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            padding: 0;
        }
        .hero-meta li {
            display: flex;
            align-items: baseline;
            gap: 10px;
            color: rgba(243, 240, 234, .72);
            font-size: 13px;
        }
        .hero-meta strong {
            font-family: var(--font-mono);
            font-size: 22px;
            color: #fff;
            font-weight: 600;
        }

        /* ===== Intro section ===== */
        .intro-section {
            background: var(--bg);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: clamp(32px, 6vw, 84px);
            align-items: center;
        }
        .intro-copy h2 {
            font-size: 28px;
            line-height: 1.5;
            font-weight: 600;
            letter-spacing: 0;
            margin: 14px 0 24px;
        }
        .intro-copy p {
            color: #3A3A3A;
            font-size: 16px;
            line-height: 1.9;
            margin-top: 16px;
        }
        .intro-copy p:first-of-type {
            margin-top: 0;
        }
        .live-strip {
            margin-top: 28px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 1px solid var(--line);
            background: var(--surface);
            border-radius: var(--radius-pill);
            padding: 9px 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
        }
        .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 0 rgba(255, 99, 51, .55);
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 99, 51, .5);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(255, 99, 51, 0);
            }
        }
        .intro-media {
            margin: 0;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--line);
            background: var(--surface);
            box-shadow: var(--shadow-1);
            transform: translateY(0);
            transition: transform .4s cubic-bezier(.2, 0, 0, 1), box-shadow .4s ease;
        }
        .intro-media:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-2);
        }
        .intro-media img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }
        .intro-media figcaption {
            padding: 12px 16px;
            font-size: 13px;
            color: var(--muted);
            background: var(--surface);
        }

        /* ===== QA section ===== */
        .qa-section {
            background: var(--surface);
            border-top: 1px solid var(--line);
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 48px;
        }
        .section-note {
            font-size: 13px;
            color: var(--muted);
            flex-shrink: 0;
        }
        .qa-rail {
            max-width: 940px;
            margin: 0 auto;
        }
        details.qa-item {
            border: 1px solid var(--line);
            border-left: 4px solid var(--brand);
            border-radius: var(--radius);
            background: var(--bg);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
        }
        details.qa-item[open] {
            background: #fff;
            border-left-color: var(--accent);
            box-shadow: var(--shadow-1);
        }
        details.qa-item summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            transition: background .2s ease;
        }
        details.qa-item summary::-webkit-details-marker {
            display: none;
        }
        .q-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-serif);
            font-weight: 700;
            color: var(--ink);
            background: var(--brand);
            border-radius: 4px;
            width: 28px;
            height: 28px;
            font-size: 14px;
            flex-shrink: 0;
        }
        details.qa-item[open] .q-mark {
            color: #fff;
            background: var(--accent);
        }
        .qa-q {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.5;
            flex: 1;
        }
        .qa-icon {
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--line);
            color: var(--muted);
            font-size: 15px;
            font-weight: 400;
            transition: transform .25s ease, background .2s ease, color .2s ease;
            flex-shrink: 0;
        }
        details.qa-item[open] .qa-icon {
            transform: rotate(135deg);
            background: var(--ink);
            color: var(--brand);
            border-color: var(--ink);
        }
        .qa-body {
            padding: 2px 30px 24px 62px;
            color: #3A3A3A;
            line-height: 1.9;
            font-size: 15px;
        }
        .qa-body p+p {
            margin-top: 12px;
        }
        .qa-related {
            margin-top: 16px;
            font-size: 13px;
            color: var(--muted);
        }

        /* ===== Info type section ===== */
        .type-section {
            background: var(--bg);
        }
        .type-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 44px;
        }
        .type-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 28px 24px;
            position: relative;
            overflow: hidden;
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }
        .type-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-2);
            border-color: #CFC9BE;
        }
        .type-card .type-index {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 32px;
            color: var(--brand);
            display: block;
            margin-bottom: 16px;
            text-shadow: 0 2px 0 rgba(16, 17, 20, .06);
        }
        .type-card:hover .type-index {
            color: var(--accent);
        }
        .type-card h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .type-card p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.85;
        }

        /* ===== Steps section ===== */
        .steps-section {
            background: var(--surface);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 48px;
            counter-reset: step;
        }
        .step-item {
            border-top: 2px solid var(--line);
            padding-top: 20px;
            transition: border-color .2s ease, transform .3s ease;
        }
        .step-item:hover {
            border-top-color: var(--brand);
            transform: translateY(-3px);
        }
        .step-item .step-num {
            display: inline-flex;
            font-family: var(--font-mono);
            font-size: 26px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 14px;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .step-item p {
            color: var(--muted);
            font-size: 13px;
            line-height: 1.8;
        }

        /* ===== Dark FAQ ===== */
        .dark-faq {
            background: var(--ink);
            color: rgba(243, 240, 234, .88);
        }
        .dark-faq .section-title {
            color: #fff;
        }
        .dark-faq .section-kicker {
            color: rgba(243, 240, 234, .7);
        }
        .dark-faq .section-kicker::after {
            background: rgba(243, 240, 234, .3);
        }
        .dark-faq-grid {
            max-width: 960px;
            margin: 44px auto 0;
        }
        details.dark-faq-item {
            border-bottom: 1px solid rgba(243, 240, 234, .16);
        }
        details.dark-faq-item:first-of-type {
            border-top: 1px solid rgba(243, 240, 234, .16);
        }
        details.dark-faq-item summary {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 22px 6px;
            cursor: pointer;
            list-style: none;
            color: #F3F0EA;
            font-weight: 600;
            font-size: 17px;
            transition: color .2s ease;
        }
        details.dark-faq-item summary::-webkit-details-marker {
            display: none;
        }
        details.dark-faq-item summary .faq-q-badge {
            color: var(--brand);
            font-family: var(--font-mono);
            font-size: 14px;
            flex-shrink: 0;
        }
        details.dark-faq-item summary .dark-arrow {
            margin-left: auto;
            color: rgba(243, 240, 234, .55);
            font-size: 20px;
            transition: transform .25s ease, color .2s ease;
        }
        details.dark-faq-item[open] summary .dark-arrow {
            transform: rotate(135deg);
            color: var(--brand);
        }
        details.dark-faq-item .dark-answer {
            padding: 2px 30px 28px 32px;
            color: rgba(243, 240, 234, .7);
            line-height: 1.9;
            font-size: 15px;
        }

        /* ===== Explore ===== */
        .explore-section {
            background: var(--bg);
        }
        .explore-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 44px;
        }
        .explore-card {
            display: block;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }
        .explore-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-2);
            border-color: #CDC7BB;
        }
        .explore-media {
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #E5E1DA;
        }
        .explore-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s cubic-bezier(.2, 0, 0, 1);
        }
        .explore-card:hover .explore-media img {
            transform: scale(1.03);
        }
        .explore-body {
            padding: 20px 22px 22px;
        }
        .explore-label {
            display: inline-flex;
            align-items: center;
            font-family: var(--font-mono);
            font-size: 12px;
            letter-spacing: .06em;
            color: var(--accent);
            font-weight: 700;
        }
        .explore-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 8px 0 8px;
            color: var(--ink);
        }
        .explore-body p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.85;
            margin-bottom: 16px;
        }
        .explore-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
        }
        .explore-arrow svg {
            transition: transform .25s ease;
        }
        .explore-card:hover .explore-arrow svg {
            transform: translateX(4px);
        }

        /* ===== CTA band ===== */
        .collect-section {
            background: var(--surface);
            border-top: 1px solid var(--line);
            padding: 56px 0;
        }
        .collect-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            border: 1px dashed #C5BEB0;
            border-radius: var(--radius);
            padding: clamp(24px, 4vw, 42px);
        }
        .collect-copy strong {
            display: block;
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .collect-copy span {
            color: var(--muted);
            font-size: 14px;
            display: block;
            max-width: 480px;
            line-height: 1.7;
        }
        .cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }
        .btn-ink {
            background: var(--ink);
            color: #fff;
            border-color: var(--ink);
        }
        .btn-ink:hover {
            background: var(--brand);
            color: var(--ink);
            border-color: var(--brand);
        }
        .btn-ink.is-saved {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }
        .btn-outline-ink {
            background: transparent;
            border-color: var(--ink);
            color: var(--ink);
        }
        .btn-outline-ink:hover {
            background: var(--brand);
            border-color: var(--brand);
            color: var(--ink);
        }
        .copy-success {
            background: var(--brand) !important;
            border-color: var(--brand) !important;
            color: var(--ink) !important;
        }
        .back-top-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 0 6px;
            font-size: 14px;
            color: var(--muted);
            transition: color .2s ease, transform .25s ease;
        }
        .back-top-link:hover {
            color: var(--ink);
            transform: translateY(-2px);
        }

        /* ===== Scroll top ===== */
        .to-top {
            position: fixed;
            right: 24px;
            bottom: 28px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--ink);
            color: var(--brand);
            border: 1px solid rgba(243, 240, 234, .3);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 60;
            opacity: 0;
            pointer-events: none;
            transform: translateY(10px);
            transition: opacity .25s ease, transform .25s ease, background .2s ease, color .2s ease;
        }
        .to-top.show {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }
        .to-top:hover {
            background: var(--brand);
            color: var(--ink);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--ink);
            color: rgba(243, 240, 234, .76);
        }
        .site-footer a {
            transition: color .2s ease;
        }
        .site-footer a:hover {
            color: var(--brand);
        }
        .footer-top {
            display: grid;
            grid-template-columns: minmax(0, 1.4fr) minmax(240px, .8fr);
            gap: 48px;
            padding: 64px 0 34px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            max-width: 460px;
            color: rgba(243, 240, 234, .62);
            font-size: 14px;
            line-height: 1.85;
            margin-top: 18px;
        }
        .footer-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px 32px;
            align-content: start;
        }
        .footer-nav a {
            color: rgba(243, 240, 234, .72);
            font-size: 14px;
            padding: 3px 0;
            position: relative;
            width: fit-content;
        }
        .footer-bottom {
            border-top: 1px solid rgba(243, 240, 234, .14);
            padding: 22px 0 30px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px 30px;
            color: rgba(243, 240, 234, .55);
            font-size: 13px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1180px) {
            .header-search {
                width: 44px;
                padding: 0 4px;
            }
            .header-search input {
                width: 0;
                opacity: 0;
            }
            .header-search:focus-within {
                width: 200px;
                padding: 0 14px;
            }
            .header-search:focus-within input {
                width: 100%;
                opacity: 1;
            }
        }
        @media (max-width: 1060px) {
            .header-btn-ghost {
                display: none;
            }
        }
        @media (max-width: 960px) {
            .header-inner {
                min-height: 60px;
                flex-wrap: wrap;
                padding-top: 6px;
                padding-bottom: 6px;
            }
            .logo-text strong {
                font-size: 15px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
            }
            .menu-toggle {
                display: inline-flex;
                order: 2;
                margin-left: auto;
            }
            .header-right {
                display: none;
                order: 3;
                width: 100%;
                flex-basis: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 18px 0 16px;
            }
            .site-header.menu-open .header-right {
                display: flex;
            }
            .main-nav {
                display: flex;
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                gap: 2px;
                border-top: 1px solid rgba(243, 240, 234, .14);
                padding-top: 12px;
            }
            .main-nav a {
                padding: 12px 4px;
                border-radius: 0;
                border-bottom: 1px solid rgba(243, 240, 234, .08);
            }
            .main-nav a::after {
                display: none;
            }
            .main-nav a.active {
                color: var(--brand);
            }
            .header-tools {
                width: 100%;
                justify-content: flex-start;
                padding-top: 4px;
            }
            .header-search,
            .header-search:focus-within {
                width: 170px;
                padding: 0 12px;
            }
            .header-search input,
            .header-search:focus-within input {
                width: 100%;
                opacity: 1;
                color: #fff;
            }
            .header-btn-ghost {
                display: inline-flex;
            }
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 64px 0;
            }
            .category-hero {
                min-height: auto;
                padding: 60px 0 54px;
            }
            .category-hero h1 {
                font-size: 38px;
            }
            .hero-tagline {
                font-size: 15px;
            }
            .hero-actions {
                margin-bottom: 30px;
            }
            .hero-meta {
                gap: 18px;
                row-gap: 12px;
            }
            .hero-meta li {
                width: calc(50% - 10px);
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .intro-copy h2 {
                font-size: 23px;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                margin-bottom: 32px;
            }
            .section-title {
                font-size: 24px;
            }
            .section-note {
                font-size: 12px;
            }
            .qa-body {
                padding: 2px 20px 22px 44px;
            }
            .type-grid,
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                gap: 28px;
            }
            .explore-grid {
                grid-template-columns: 1fr;
            }
            .collect-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-group {
                width: 100%;
            }
            .cta-group .btn {
                flex: 1;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 36px;
                padding: 52px 0 30px;
            }
            .footer-bottom {
                flex-direction: column;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .hero-actions .btn {
                flex: 1;
            }
            .qa-item summary {
                flex-wrap: nowrap;
            }
            .qa-q {
                font-size: 15px;
            }
            .q-mark {
                width: 24px;
                height: 24px;
                font-size: 12px;
            }
            .qa-body {
                padding-left: 20px;
            }
            .to-top {
                right: 16px;
                bottom: 18px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: .01ms !important;
                scroll-behavior: auto !important;
            }
        }