/* roulang page: index */
:root {
            --bg: #F4F6F8;
            --bg-soft: #F9FBFD;
            --dark: #0F151C;
            --primary: #00C2A8;
            --primary-dark: #00A98F;
            --accent: #FF6B4A;
            --accent-dark: #E05232;
            --violet: #9B7DFF;
            --white: #FFFFFF;
            --heading: #101828;
            --body: #3F495A;
            --muted: #8A94A6;
            --border: #E8ECF2;
            --radius-lg: 16px;
            --radius: 12px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow: 0 8px 20px rgba(15, 25, 45, .05);
            --shadow-hover: 0 12px 28px rgba(15, 25, 45, .08);
            --font: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
            --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font);
            background: var(--bg);
            color: var(--body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        a:hover {
            color: var(--primary-dark);
        }

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

        button,
        input {
            font-family: inherit;
        }

        :focus-visible {
            outline: 3px solid rgba(0, 194, 168, .35);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .container {
            max-width: 1200px;
        }

        .topbar {
            background: #10181F;
            color: #B7C0CC;
            font-size: 13px;
            min-height: 34px;
            border-bottom: 1px solid rgba(255, 255, 255, .04);
        }

        .topbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            min-height: 34px;
        }

        .topbar p {
            margin: 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .topbar i {
            color: var(--primary);
        }

        .live-dot {
            display: inline-block;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 194, 168, .16);
            margin-right: 6px;
        }

        .topbar .topbar-status {
            display: inline-flex;
            align-items: center;
            color: #D7DEE8;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(255, 255, 255, .94);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 12px;
            min-height: 72px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            flex-shrink: 0;
            font-size: 19px;
            font-weight: 800;
            color: var(--heading);
            letter-spacing: -0.01em;
        }

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

        .brand-mark {
            width: 36px;
            height: 36px;
            border-radius: 11px;
            background: linear-gradient(135deg, #00C2A8, #65E8D0);
            color: #101828;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 6px 14px rgba(0, 194, 168, .28);
            flex-shrink: 0;
        }

        .brand-short {
            display: none;
        }

        .main-menu {
            display: flex;
            align-items: center;
            gap: 2px;
            margin-left: 10px;
        }

        .menu-link {
            padding: 9px 14px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--heading);
            white-space: nowrap;
        }

        .menu-link:hover {
            color: var(--heading);
            background: #EDF3F5;
        }

        .menu-link.is-active {
            color: var(--primary-dark);
            background: rgba(0, 194, 168, .1);
        }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 9px;
            margin-left: auto;
        }

        .search-trigger {
            display: flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--border);
            background: var(--bg-soft);
            color: var(--muted);
            border-radius: 9px;
            padding: 7px 12px;
            font-size: 14px;
            width: 188px;
            text-align: left;
            transition: border-color .2s, box-shadow .2s;
        }

        .search-trigger:hover {
            color: var(--body);
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 194, 168, .12);
        }

        .key-badge {
            background: #EDF1F4;
            color: #6B7684;
            border-radius: 5px;
            padding: 1px 6px;
            font-family: var(--mono);
            font-size: 11px;
            margin-left: auto;
        }

        .icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border: 1px solid var(--border);
            background: #fff;
            border-radius: 9px;
            color: var(--body);
            font-size: 15px;
            transition: border-color .2s, color .2s, background .2s;
        }

        .icon-btn:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            background: rgba(0, 194, 168, .05);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #101828 !important;
            border: 1px solid var(--primary);
            font-weight: 700;
            font-size: 14px;
            border-radius: 9px;
            padding: 9px 17px;
            box-shadow: 0 6px 16px rgba(0, 194, 168, .22);
            transition: background .2s, transform .2s, box-shadow .2s;
        }

        .header-cta:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #101828 !important;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(0, 194, 168, .28);
        }

        .nav-mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--border);
            background: #fff;
            border-radius: 9px;
            color: var(--heading);
            font-size: 18px;
            align-items: center;
            justify-content: center;
        }

        .mobile-nav-tools {
            display: none;
        }

        .hero-section {
            background: var(--dark);
            color: #fff;
            overflow: hidden;
            position: relative;
            padding: 90px 0 84px;
        }

        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            background:
                radial-gradient(1000px 520px at 88% -10%, rgba(0, 194, 168, .22), transparent 60%),
                radial-gradient(760px 420px at 8% 120%, rgba(255, 107, 74, .14), transparent 58%);
        }

        .hero-section::after {
            content: "";
            position: absolute;
            right: 34%;
            top: -60px;
            width: 200px;
            height: 200px;
            opacity: .5;
            background-image: radial-gradient(rgba(255, 255, 255, .13) 1px, transparent 1px);
            background-size: 16px 16px;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .13);
            border-radius: 999px;
            padding: 6px 15px;
            font-size: 13px;
            color: rgba(255, 255, 255, .78);
            margin-bottom: 18px;
        }

        .hero-eyebrow i {
            color: var(--primary);
        }

        .hero-section h1 {
            font-size: clamp(30px, 3.6vw, 40px);
            font-weight: 800;
            color: #fff;
            line-height: 1.28;
            margin: 0 0 17px;
            letter-spacing: -0.02em;
        }

        .hero-section h1 span {
            color: var(--primary);
        }

        .hero-lead {
            color: rgba(255, 255, 255, .72);
            font-size: 16px;
            line-height: 1.85;
            max-width: 560px;
            margin: 0 0 28px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            border: 1px solid var(--primary);
            color: #101828;
            font-weight: 700;
            border-radius: 10px;
            padding: 13px 24px;
            font-size: 15px;
            box-shadow: 0 12px 30px rgba(0, 194, 168, .28);
            transition: background .2s, transform .2s, box-shadow .2s;
        }

        .btn-hero-primary:hover {
            background: #25DCBE;
            border-color: #25DCBE;
            color: #101828;
            transform: translateY(-2px);
        }

        .btn-hero-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
            font-weight: 600;
            border-radius: 10px;
            padding: 13px 23px;
            font-size: 15px;
            transition: border-color .2s, background .2s, transform .2s;
        }

        .btn-hero-ghost:hover {
            color: #fff;
            background: rgba(255, 255, 255, .06);
            border-color: rgba(255, 255, 255, .7);
            transform: translateY(-2px);
        }

        .hero-meta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, .1);
        }

        .hero-meta-item .num {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-meta-item .label {
            font-size: 12px;
            color: rgba(255, 255, 255, .55);
            margin-top: 2px;
        }

        .hero-visual {
            position: relative;
            z-index: 2;
        }

        .hero-art {
            border-radius: 22px;
            overflow: hidden;
            background: rgba(255, 255, 255, .07);
            border: 1px solid rgba(255, 255, 255, .16);
            padding: 8px;
            box-shadow: 0 35px 60px rgba(0, 0, 0, .25);
        }

        .hero-art img {
            width: 100%;
            max-height: 430px;
            object-fit: cover;
            border-radius: 16px;
        }

        .hero-visual-badge {
            position: absolute;
            right: -18px;
            top: 26px;
            background: #fff;
            color: var(--heading);
            border-radius: 14px;
            padding: 14px 18px;
            box-shadow: 0 18px 35px rgba(0, 0, 0, .18);
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 9px;
        }

        .hero-visual-badge i {
            font-size: 18px;
            color: var(--accent);
        }

        .site-section {
            padding: 88px 0;
        }

        .section-head {
            margin-bottom: 40px;
        }

        .kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: .08em;
            text-transform: uppercase;
            margin-bottom: 7px;
        }

        .kicker i {
            font-size: 14px;
        }

        .section-head h2 {
            font-size: clamp(26px, 2.8vw, 32px);
            font-weight: 800;
            color: var(--heading);
            margin: 0;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .section-head p {
            color: var(--muted);
            margin: 10px 0 0;
            max-width: 680px;
        }

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

        .dir-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            align-items: start;
        }

        .dir-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            display: block;
            color: var(--body);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }

        .dir-card:hover {
            color: var(--body);
            transform: translateY(-5px);
            border-color: rgba(0, 194, 168, .45);
            box-shadow: var(--shadow-hover);
        }

        .dir-card:nth-child(2) {
            transform: translateY(14px);
        }

        .dir-card:nth-child(2):hover {
            transform: translateY(9px);
        }

        .dir-media {
            height: 170px;
            overflow: hidden;
        }

        .dir-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform .5s ease;
        }

        .dir-card:hover .dir-media img {
            transform: scale(1.035);
        }

        .dir-body {
            padding: 22px 24px 26px;
        }

        .soft-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: rgba(0, 194, 168, .1);
            color: #008A79;
            border: 1px solid rgba(0, 194, 168, .18);
            font-size: 13px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            line-height: 1.6;
        }

        .soft-tag.accent-tag {
            background: rgba(255, 107, 74, .1);
            color: #D45033;
            border-color: rgba(255, 107, 74, .2);
        }

        .soft-tag.violet-tag {
            background: rgba(155, 125, 255, .1);
            color: #6E4BD6;
            border-color: rgba(155, 125, 255, .18);
        }

        .dir-card h3,
        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--heading);
            margin: 12px 0 8px;
            line-height: 1.45;
        }

        .dir-card p {
            font-size: 14px;
            color: var(--body);
            margin: 0 0 14px;
            line-height: 1.8;
        }

        .read-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary-dark);
        }

        .read-more-link i {
            transition: transform .2s;
        }

        .card-link:hover .read-more-link i,
        .dir-card:hover .read-more-link i,
        .cms-item:hover .read-more-link i,
        .feature-card:hover .read-more-link i {
            transform: translateX(4px);
        }

        .cms-section {
            background: #fff;
            border-top: 1px solid #EDEFF3;
            border-bottom: 1px solid #EDEFF3;
        }

        .cms-panel {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 0;
            box-shadow: var(--shadow);
        }

        .cms-item {
            display: block;
            padding: 22px 26px;
            border-bottom: 1px solid #EFF1F4;
            color: var(--body);
            transition: background .2s ease, border-left-color .2s ease;
            border-left: 3px solid transparent;
        }

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

        .cms-item:hover {
            background: #FBFDFE;
            border-left-color: var(--primary);
            color: var(--body);
        }

        .cms-item .soft-tag {
            margin-bottom: 6px;
        }

        .cms-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--heading);
            margin: 7px 0 5px;
            line-height: 1.5;
        }

        .cms-item h3:hover {
            color: var(--primary-dark);
        }

        .cms-item p {
            margin: 0 0 11px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-item-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            flex-wrap: wrap;
        }

        .cms-item-meta time {
            font-family: var(--mono);
            font-size: 12px;
            color: var(--muted);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .cms-section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 28px;
        }

        .all-link {
            font-size: 14px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 16px;
            color: var(--body);
            transition: border-color .2s, color .2s;
        }

        .all-link:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        .empty-panel {
            padding: 36px 30px;
            text-align: center;
            background: #FAFCFD;
            border: 1px dashed #C7D1D9;
            border-radius: 12px;
            color: var(--muted);
        }

        .empty-panel i {
            font-size: 26px;
            margin-bottom: 10px;
            color: #AEB7C5;
        }

        .empty-panel p {
            margin: 0;
            font-size: 15px;
        }

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

        .feature-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
            gap: 24px;
        }

        .feature-main-card,
        .feature-sub-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
            display: block;
            color: var(--body);
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
        }

        .feature-main-card:hover,
        .feature-sub-card:hover {
            color: var(--body);
            border-color: rgba(0, 194, 168, .35);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .feature-main-card .feature-image {
            height: 285px;
            overflow: hidden;
        }

        .feature-main-card .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .feature-main-body {
            padding: 24px 26px 28px;
        }

        .feature-aside {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .feature-sub-card {
            display: grid;
            grid-template-columns: 158px 1fr;
            min-height: 148px;
        }

        .feature-sub-card .feature-image {
            height: 100%;
            min-height: 142px;
            overflow: hidden;
        }

        .feature-sub-card .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .feature-sub-card .feature-sub-body {
            padding: 18px 20px;
        }

        .feature-sub-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--heading);
            margin: 8px 0 6px;
            line-height: 1.5;
        }

        .feature-sub-card p {
            font-size: 13px;
            color: var(--muted);
            margin: 0 0 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-section {
            background: #fff;
        }

        .topic-strip {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 10px;
            scrollbar-color: var(--border) transparent;
        }

        .topic-tile {
            min-width: 245px;
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 22px;
            color: var(--body);
            transition: border-color .2s, background .2s, transform .2s;
        }

        .topic-tile:hover {
            border-color: var(--primary);
            background: #fff;
            transform: translateY(-3px);
            color: var(--body);
        }

        .topic-tile i {
            font-size: 22px;
            color: var(--primary-dark);
            width: 42px;
            height: 42px;
            background: rgba(0, 194, 168, .1);
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
        }

        .topic-tile h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--heading);
            margin: 0 0 6px;
        }

        .topic-tile p {
            font-size: 13px;
            color: var(--muted);
            margin: 0;
        }

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

        .collect-box {
            background: #fff;
            border: 1px solid rgba(0, 194, 168, .2);
            border-radius: 20px;
            padding: 42px 44px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }

        .collect-box::before {
            content: "";
            position: absolute;
            right: -40px;
            top: -50px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(0, 194, 168, .08);
        }

        .collect-copy {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .collect-icon {
            width: 62px;
            height: 62px;
            border-radius: 18px;
            background: rgba(255, 107, 74, .12);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            flex-shrink: 0;
        }

        .collect-copy h2 {
            font-size: 21px;
            color: var(--heading);
            font-weight: 800;
            margin: 0 0 5px;
        }

        .collect-copy p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
        }

        .collect-btn-group {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-brand-lg {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            border-radius: 10px;
            padding: 12px 24px;
            font-weight: 700;
            font-size: 15px;
            box-shadow: 0 10px 24px rgba(255, 107, 74, .22);
            transition: background .2s, transform .2s, box-shadow .2s;
        }

        .btn-brand-lg:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-light-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--heading);
            font-weight: 600;
            border-radius: 10px;
            padding: 12px 20px;
            font-size: 15px;
        }

        .btn-light-outline:hover {
            color: var(--primary-dark);
            border-color: var(--primary);
        }

        .share-links {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-left: 4px;
        }

        .share-links a {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: #F3F6F8;
            color: #5B6878;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        .share-links a:hover {
            background: rgba(0, 194, 168, .12);
            color: var(--primary-dark);
        }

        .faq-section {
            background: #fff;
            border-top: 1px solid #EDEFF3;
        }

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

        .accordion-item {
            background: #fff;
            border: 1px solid var(--border) !important;
            border-radius: var(--radius) !important;
            margin-bottom: 12px;
            border-left: 3px solid var(--border) !important;
            overflow: hidden;
            box-shadow: 0 3px 10px rgba(0, 0, 0, .018);
            transition: border-left-color .2s, box-shadow .2s;
        }

        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-left-color: var(--primary) !important;
            box-shadow: 0 8px 20px rgba(0, 0, 0, .03);
        }

        .accordion-button {
            background: #fff;
            color: var(--heading);
            font-weight: 600;
            font-size: 16px;
            padding: 18px 22px;
            box-shadow: none;
            border-radius: var(--radius) !important;
        }

        .accordion-button:not(.collapsed) {
            background: #FBFCFD;
            color: var(--heading);
            box-shadow: none;
            border-radius: var(--radius) !important;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 194, 168, .16);
            border-color: var(--primary);
        }

        .accordion-button::after {
            opacity: .6;
            transition: transform .25s ease;
        }

        .accordion-body {
            background: #FBFCFD;
            padding: 6px 22px 22px;
            color: var(--body);
            font-size: 14px;
            border-top: 1px dashed #E4E9EE;
            line-height: 1.85;
        }

        .site-footer {
            background: var(--dark);
            color: #A7AFBB;
            padding: 72px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2.1fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }

        .footer-brand .brand-mark {
            width: 34px;
            height: 34px;
            font-size: 14px;
        }

        .footer-col p {
            margin: 0 0 10px;
            line-height: 1.8;
            color: #98A1AE;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
        }

        .footer-links a {
            display: inline-flex;
            color: #A7AFBB;
            padding: 4px 0;
            font-size: 14px;
            transition: color .2s, padding-left .2s;
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-note {
            color: #7F8792;
            font-size: 13px;
            line-height: 1.85;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 18px 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            margin: 0;
            color: #8993A1;
            font-size: 13px;
        }

        .back-top {
            color: #A7AFBB;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .back-top:hover {
            color: #fff;
        }

        .search-modal-content {
            border-radius: 18px;
            border: 0;
            overflow: hidden;
            box-shadow: 0 35px 70px rgba(0, 0, 0, .25);
        }

        .search-modal-content .modal-header {
            border: 0;
            padding: 18px 16px 12px;
        }

        .command-input {
            border: 1px solid var(--border);
            background: var(--bg-soft);
            border-radius: 10px;
            height: 48px;
            padding: 0 16px;
            font-size: 15px;
            box-shadow: none;
        }

        .command-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(0, 194, 168, .15);
        }

        .search-modal-content .modal-body {
            padding: 10px 20px 24px;
        }

        .search-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--muted);
            border-top: 1px solid var(--border);
            padding-top: 18px;
            margin-bottom: 12px;
        }

        .shortcut-link-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .shortcut-link-group a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--heading);
            font-size: 14px;
            border-radius: 999px;
            padding: 7px 14px;
        }

        .shortcut-link-group a:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            background: rgba(0, 194, 168, .04);
        }

        .search-footer-hint {
            margin-top: 20px;
            color: var(--muted);
            font-size: 12px;
            display: flex;
            gap: 14px;
            align-items: center;
        }

        .search-footer-hint kbd {
            background: #EEF1F4;
            color: #697484;
            border-radius: 5px;
            padding: 2px 7px;
            font-family: var(--mono);
            font-size: 11px;
            border: 0;
        }

        @media (min-width: 992px) {
            .main-menu {
                display: flex !important;
            }
        }

        @media (max-width: 991.98px) {
            .nav-mobile-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .nav-tools {
                display: none;
            }

            .main-menu {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 22px 35px rgba(0, 0, 0, .06);
                padding: 10px 20px 16px;
                margin: 0;
                flex-direction: column;
                align-items: stretch;
            }

            .main-menu.collapse {
                display: none !important;
            }

            .main-menu.collapse.show {
                display: flex !important;
            }

            .menu-link {
                padding: 13px 8px;
                border-radius: 8px;
                border-bottom: 1px solid #F0F2F5;
            }

            .mobile-nav-tools {
                display: flex;
                gap: 10px;
                padding-top: 14px;
            }

            .mobile-nav-tools .search-trigger {
                width: auto;
                flex: 1;
            }

            .mobile-nav-tools .header-cta {
                flex-shrink: 0;
            }

            .hero-section {
                padding: 66px 0 70px;
            }

            .hero-art {
                margin-top: 36px;
            }

            .hero-visual-badge {
                right: 0;
                top: auto;
                bottom: -14px;
            }

            .dir-grid {
                grid-template-columns: 1fr;
                gap: 46px;
            }

            .dir-card:nth-child(2) {
                transform: none;
            }

            .dir-card:nth-child(2):hover {
                transform: translateY(-5px);
            }

            .dir-media {
                height: 210px;
            }

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

            .feature-main-card .feature-image {
                height: 250px;
            }

            .feature-sub-card {
                grid-template-columns: 130px 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px 32px;
            }

            .collect-box {
                padding: 34px 26px;
            }
        }

        @media (max-width: 767.98px) {
            .topbar p {
                max-width: 75%;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }

            .topbar-status span {
                display: none;
            }

            .site-section {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 28px;
            }

            .hero-section h1 {
                font-size: 28px;
            }

            .feature-main-card .feature-image {
                height: 200px;
            }

            .feature-sub-card {
                display: block;
            }

            .feature-sub-card .feature-image {
                height: 150px;
            }

            .feature-sub-card p {
                -webkit-line-clamp: 3;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .collect-copy {
                flex-direction: column;
                text-align: center;
            }

            .collect-btn-group {
                justify-content: center;
            }

            .cms-item {
                padding: 18px 16px;
            }

            .cms-item-meta {
                flex-direction: column;
                align-items: flex-start;
            }

            .cms-section-head {
                flex-direction: column;
                align-items: flex-start;
            }

            .hero-meta-row {
                gap: 18px;
            }
        }

        @media (max-width: 575.98px) {
            .brand {
                font-size: 17px;
                gap: 7px;
            }

            .brand-full {
                display: none;
            }

            .brand-short {
                display: inline;
            }

            .brand-mark {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .main-nav {
                min-height: 64px;
            }

            .hero-section {
                padding: 50px 0 58px;
            }

            .dir-media {
                height: 170px;
            }

            .topic-tile {
                min-width: 206px;
            }

            .feature-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }

            .search-trigger {
                font-size: 13px;
            }
        }

        ::selection {
            background: rgba(0, 194, 168, .2);
            color: #101828;
        }

        ::-webkit-scrollbar {
            width: 10px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: #EFF2F5;
        }

        ::-webkit-scrollbar-thumb {
            background: #C9D2DC;
            border-radius: 10px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #AEB9C6;
        }

/* roulang page: article */
:root {
    --bg-body: #F4F6F8;
    --bg-deep: #0F151C;
    --card-bg: #FFFFFF;
    --brand: #00C2A8;
    --brand-dark: #00A98F;
    --brand-soft: rgba(0, 194, 168, 0.12);
    --accent: #FF6B4A;
    --violet-accent: #9B7DFF;
    --title-color: #101828;
    --text-color: #3F495A;
    --muted: #8A94A6;
    --border: #E8ECF2;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 10px;
    --shadow-card: 0 8px 20px rgba(15, 25, 45, 0.05);
    --shadow-hover: 0 12px 28px rgba(15, 25, 45, 0.08);
    --transition: all 0.2s ease;
    --font-main: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-body);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

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

input, textarea, select {
    font-family: inherit;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--title-color);
    line-height: 1.3;
    font-weight: 700;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
    width: 100%;
}

/* ===== Header ===== */
.site-header {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(232, 236, 242, 0.8);
    position: sticky;
    top: 0;
    z-index: 1050;
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: 0 4px 20px rgba(15, 20, 30, 0.06);
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    font-weight: 700;
    font-size: 18px;
    color: var(--title-color);
    letter-spacing: 0.01em;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--brand), #00E3C4);
    border-radius: 10px;
    color: var(--bg-deep);
    font-size: 18px;
    box-shadow: 0 4px 10px rgba(0, 194, 168, 0.22);
}

.brand-full {
    white-space: nowrap;
    font-size: 16px;
}

.brand-short {
    display: none;
    font-size: 16px;
}

.main-menu {
    display: flex;
    align-items: center;
    gap: 6px;
}

.main-menu .menu-link {
    display: inline-block;
    padding: 8px 14px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-color);
    border-radius: 8px;
    transition: var(--transition);
    white-space: nowrap;
}

.main-menu .menu-link:hover {
    color: var(--brand-dark);
    background: rgba(0, 194, 168, 0.06);
}

.main-menu .menu-link.is-active {
    color: var(--brand-dark);
    font-weight: 600;
    background: rgba(0, 194, 168, 0.08);
}

.nav-tools {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.search-trigger {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 40px;
    padding: 0 12px;
    background: #F4F6F8;
    border: 1px solid transparent;
    border-radius: 10px;
    font-size: 14px;
    color: var(--muted);
    transition: var(--transition);
    white-space: nowrap;
}

.search-trigger:hover {
    border-color: rgba(0, 194, 168, 0.35);
    background: #F4F6F8;
    color: var(--title-color);
}

.key-badge {
    display: inline-block;
    padding: 2px 6px;
    border: 1px solid #D6DDE4;
    border-radius: 6px;
    background: #fff;
    font-size: 11px;
    line-height: 1.4;
    color: var(--muted);
    font-family: var(--font-mono);
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-color);
    transition: var(--transition);
}

.icon-btn:hover {
    border-color: var(--brand);
    color: var(--brand-dark);
    background: var(--brand-soft);
}

.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 40px;
    padding: 0 18px;
    background: var(--brand);
    border-radius: 10px;
    color: #0A141B;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.header-cta:hover {
    background: var(--brand-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(0, 194, 168, 0.25);
}

.mobile-nav-tools {
    display: none;
}

.nav-mobile-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 18px;
    color: var(--title-color);
    align-items: center;
    justify-content: center;
}

/* ===== Article Page ===== */
.article-wrapper {
    padding: 32px 0 72px;
}

.article-breadcrumb {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 18px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}

.article-breadcrumb a {
    color: var(--muted);
    transition: var(--transition);
}

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

.article-breadcrumb .sep {
    opacity: 0.5;
    margin: 0 2px;
}

.article-main-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-top: 10px;
}

.article-body-wrap {
    min-width: 0;
}

.article-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.article-header {
    padding: 40px 40px 24px;
    border-bottom: 1px solid var(--border);
}

.article-category {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--brand-dark);
    background: var(--brand-soft);
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 16px;
    transition: var(--transition);
}

.article-category:hover {
    background: var(--brand);
    color: #0A141B;
}

.article-title {
    font-size: 28px;
    line-height: 1.3;
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: 0.01em;
}

.article-excerpt {
    font-size: 15px;
    color: var(--muted);
    line-height: 1.8;
    margin-bottom: 20px;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 8px;
}

.article-meta .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.article-meta .meta-item i {
    font-size: 14px;
    color: #B0BAC9;
}

.article-meta .meta-date {
    font-family: var(--font-mono);
    font-size: 13px;
}

.article-body {
    padding: 36px 40px 48px;
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-color);
}

.article-body p {
    margin-bottom: 24px;
}

.article-body img {
    border-radius: 14px;
    margin: 28px auto;
    display: block;
    box-shadow: var(--shadow-card);
}

.article-body h2 {
    font-size: 24px;
    margin: 40px 0 18px;
    padding-left: 14px;
    border-left: 4px solid var(--brand);
}

.article-body h3 {
    font-size: 19px;
    margin: 32px 0 14px;
}

.article-body ul,
.article-body ol {
    margin-bottom: 24px;
    padding-left: 22px;
}

.article-body ul li,
.article-body ol li {
    margin-bottom: 8px;
    padding-left: 4px;
}

.article-body blockquote {
    background: #F8FAFB;
    border-left: 4px solid var(--brand);
    border-radius: 0 10px 10px 0;
    padding: 16px 22px;
    color: var(--text-color);
    font-style: normal;
    margin: 28px 0;
    font-size: 15px;
}

.article-footer-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    padding: 18px 40px 30px;
    margin-top: 8px;
}

.article-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 12px;
    background: #F4F6F8;
    border: 1px solid var(--border);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-color);
    transition: var(--transition);
}

.article-back-link:hover {
    border-color: var(--brand);
    color: var(--brand-dark);
    background: var(--brand-soft);
    transform: translateY(-1px);
}

.article-share-row {
    display: flex;
    gap: 8px;
}

.share-sm {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--border);
    color: var(--muted);
    transition: var(--transition);
    background: #fff;
}

.share-sm:hover {
    border-color: var(--brand);
    color: var(--brand-dark);
    background: var(--brand-soft);
}

.article-missing {
    padding: 80px 40px;
    text-align: center;
}

.article-missing .missing-icon {
    font-size: 42px;
    color: var(--muted);
    margin-bottom: 20px;
    opacity: 0.6;
}

.article-missing p {
    font-size: 18px;
    color: var(--title-color);
    margin-bottom: 8px;
    font-weight: 600;
}

.article-missing .sub {
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 24px;
}

/* ===== Sidebar ===== */
.article-sidebar {
    min-width: 0;
}

.sidebar-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-card);
}

.sidebar-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 18px;
    color: var(--title-color);
}

.sidebar-title::before {
    content: '';
    width: 20px;
    height: 3px;
    background: var(--brand);
    border-radius: 4px;
}

.side-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    list-style: none;
    padding: 0;
    margin: 0;
}

.side-list li {
    border-bottom: 1px solid #F0F2F5;
}

.side-list li:last-child {
    border-bottom: none;
}

.side-list a {
    display: block;
    padding: 12px 0;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-color);
}

.side-list a:hover {
    color: var(--brand-dark);
    padding-left: 6px;
}

.side-info p {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 12px;
}

.side-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
}

.side-tag {
    display: inline-block;
    padding: 5px 12px;
    font-size: 13px;
    background: #F4F6F8;
    border-radius: 999px;
    color: var(--text-color);
    border: 1px solid var(--border);
    transition: var(--transition);
    cursor: default;
}

.side-tag:hover {
    border-color: var(--brand);
    color: var(--brand-dark);
    background: var(--brand-soft);
}

/* ===== Related Section ===== */
.related-section {
    padding: 60px 0 80px;
    background: #EDF1F4;
    border-top: 1px solid var(--border);
}

.related-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 30px;
}

.related-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--title-color);
}

.related-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.related-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 194, 168, 0.35);
}

.related-card-img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-bottom: 1px solid #F0F2F5;
}

.related-card-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.related-card-title {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 8px;
    color: var(--title-color);
}

.related-card-title a:hover {
    color: var(--brand-dark);
}

.related-card-date {
    font-size: 13px;
    color: var(--muted);
    font-family: var(--font-mono);
    margin-top: auto;
}

/* ===== FAQ & collect CTA ===== */
.site-cta {
    background: var(--bg-deep);
    color: #fff;
    padding: 56px 0;
    position: relative;
    overflow: hidden;
}

.site-cta::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 194, 168, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.cta-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

.cta-text h3 {
    color: #fff;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.cta-text p {
    color: #9CA3B0;
    font-size: 14px;
    line-height: 1.7;
    max-width: 640px;
}

.cta-actions {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
}

.btn-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    height: 44px;
    background: var(--brand);
    color: #0A141B;
    padding: 0 24px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.btn-cta-primary:hover {
    background: var(--brand-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 194, 168, 0.2);
}

.btn-cta-light {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 44px;
    color: #fff;
    padding: 0 24px;
    border-radius: 12px;
    font-size: 14px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: transparent;
    transition: var(--transition);
}

.btn-cta-light:hover {
    border-color: var(--brand);
    color: var(--brand);
    transform: translateY(-2px);
}

/* ===== FAQ ===== */
.faq-section {
    background: var(--bg-body);
    padding: 88px 0;
}

.faq-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 48px;
}

.faq-header h2 {
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 10px;
}

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

.faq-list {
    max-width: 780px;
    margin: 0 auto;
}

.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    margin-bottom: 10px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.is-open {
    background: #fff;
    box-shadow: var(--shadow-card);
    border-color: rgba(0, 194, 168, 0.3);
}

.faq-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 22px;
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
}

.faq-item-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--title-color);
    transition: var(--transition);
}

.faq-item.is-open .faq-item-title {
    color: var(--brand-dark);
}

.faq-item .faq-arrow {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: #F0F2F5;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--muted);
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.faq-item.is-open .faq-arrow {
    background: var(--brand-soft);
    color: var(--brand-dark);
    transform: rotate(45deg);
}

.faq-answer {
    display: none;
    padding: 0 22px 18px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--muted);
}

/* FAQ 用于底部，这里只复用整体结构，文章页仅展示短 FAQ 提示 */
.faq-item-brief {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px 18px;
    font-size: 14px;
    color: var(--text-color);
    margin-bottom: 8px;
    display: inline-block;
    width: 100%;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-deep);
    color: #9CA3B0;
    padding-top: 56px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1.2fr 1.2fr 1.4fr;
    gap: 36px;
    padding-bottom: 36px;
}

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 14px;
}

.footer-brand .brand-mark {
    background: linear-gradient(135deg, var(--brand), #00E3C4);
    box-shadow: 0 4px 12px rgba(0, 194, 168, 0.12);
}

.footer-col h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 14px;
    font-weight: 600;
}

.footer-links a {
    color: #9CA3B0;
    font-size: 14px;
    margin-bottom: 8px;
    transition: var(--transition);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--brand);
    padding-left: 4px;
}

.footer-note {
    font-size: 13px;
    color: #6B7280;
    line-height: 1.7;
    margin-bottom: 8px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 18px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: #6B7280;
}

.footer-bottom p {
    margin: 0;
    color: #6B7280;
}

.back-top {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.06);
    color: #9CA3B0;
    font-size: 13px;
    transition: var(--transition);
}

.back-top:hover {
    color: var(--brand);
    background: rgba(255, 255, 255, 0.1);
}

/* ===== Modal Search ===== */
.search-modal .modal-content {
    border: none;
    border-radius: 16px;
    overflow: hidden;
}

.search-modal .modal-header {
    border-bottom: 1px solid var(--border);
    padding: 10px 14px;
}

.modal-search-input {
    border: none;
    box-shadow: none;
    font-size: 15px;
    padding-left: 36px;
    height: 50px;
    background: transparent;
    color: var(--title-color);
}

.modal-search-input:focus {
    box-shadow: none;
    background: transparent;
    outline: none;
    color: var(--title-color);
}

.modal-search-wrap {
    position: relative;
}

.modal-search-wrap .search-icon {
    position: absolute;
    top: 50%;
    left: 12px;
    transform: translateY(-50%);
    color: var(--muted);
}

.modal-footer {
    border-top: none;
    background: #F4F6F8;
    padding: 14px;
}

/* ===== Buttons ===== */
.btn-main {
    background: var(--brand);
    color: #0A141B;
    border: none;
    padding: 10px 25px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-main:hover {
    background: var(--brand-dark);
    color: #0A141B;
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0, 194, 168, 0.23);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border);
    padding: 10px 25px;
    border-radius: 12px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-color);
    transition: var(--transition);
}

.btn-secondary:hover {
    border-color: var(--brand);
    color: var(--brand-dark);
    background: var(--brand-soft);
    transform: translateY(-1px);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .main-menu {
        gap: 0;
    }
    .main-menu .menu-link {
        font-size: 14px;
        padding: 8px 10px;
    }
    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: 32px;
    }
    .footer-col:last-child {
        grid-column-start: 1;
    }
    .related-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

    .nav-tools {
        display: none;
    }

    .main-nav {
        height: 60px;
    }

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

    .main-menu.collapse {
        display: none;
        flex-direction: column;
        align-items: stretch;
        background: #fff;
        padding: 10px 14px;
        border-radius: 0 0 14px 14px;
        gap: 8px;
        box-shadow: 0 10px 22px rgba(15, 25, 45, 0.06);
    }

    .main-menu.is-open {
        display: flex;
        position: absolute;
        top: 60px;
        left: 12px;
        right: 12px;
        z-index: 1080;
    }

    .main-menu .menu-link {
        padding: 12px 16px;
        font-size: 16px;
        border-radius: 12px;
    }

    .main-menu .menu-link:hover {
        background: var(--brand-soft);
    }

    .mobile-nav-tools {
        display: flex;
        flex-direction: column;
        gap: 8px;
        padding-top: 8px;
        border-top: 1px solid var(--border);
        margin-top: 8px;
    }

    .mobile-nav-tools .search-trigger {
        justify-content: center;
        width: 100%;
    }

    .article-header,
    .article-body,
    .article-footer-nav {
        padding-left: 24px;
        padding-right: 24px;
    }

    .article-title {
        font-size: 20px;
    }

    .article-excerpt {
        font-size: 14px;
    }

    .article-sidebar {
        order: 2;
    }

    .cta-inner {
        flex-direction: column;
        justify-content: flex-start;
    }

    .cta-actions {
        width: 100%;
    }

    .btn-cta-primary,
    .btn-cta-light {
        flex: 1;
        justify-content: center;
    }

    .related-title {
        font-size: 20px;
    }

    .faq-section {
        padding: 64px 0;
    }
}

@media (max-width: 576px) {
    .brand-full {
        display: none;
    }
    .brand-short {
        display: inline;
        font-size: 20px;
    }
    .site-header .brand-mark {
        width: 34px;
        height: 34px;
        font-size: 16px;
    }
    .search-trigger .key-badge,
    .search-trigger span {
        display: none;
    }
    .search-trigger {
        width: 40px;
        justify-content: center;
        padding: 0;
    }
    .header-cta {
        height: 36px;
        padding: 0 14px;
        font-size: 14px;
    }
    .header-cta i {
        margin-right: 4px;
    }
    .article-body-wrap,
    .article-main-grid {
        gap: 24px;
    }
    .related-list {
        grid-template-columns: 1fr;
    }
    .site-cta {
        padding: 48px 0;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
    .cta-actions {
        flex-direction: column;
    }
    .btn-cta-primary,
    .btn-cta-light {
        width: 100%;
    }
}

/* roulang page: category1 */
:root {
            --bg-body: #F4F6F8;
            --bg-dark: #0F151C;
            --brand: #00C2A8;
            --brand-hover: #00A98F;
            --accent: #FF6B4A;
            --accent-hover: #F05536;
            --soft-purple: #9B7DFF;
            --bg-card: #FFFFFF;
            --bg-soft: #F1F5F8;
            --border: #E8ECF2;
            --text-title: #101828;
            --text-body: #3F495A;
            --text-weak: #8A94A6;
            --text-on-dark: #F7FAFC;
            --text-dim-on-dark: #9CA3B0;
            --radius-large: 16px;
            --radius: 12px;
            --radius-small: 10px;
            --shadow: 0 8px 20px rgba(15, 25, 45, .05);
            --shadow-hover: 0 14px 28px rgba(15, 25, 45, .08);
            --container-width: 1200px;
            --space-section: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg-body);
            color: var(--text-body);
            font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

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

        button,
        input {
            font-family: inherit;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-title);
            line-height: 1.35;
            margin: 0 0 .5em;
            font-weight: 700;
        }

        p {
            margin-top: 0;
        }

        .container {
            max-width: var(--container-width);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(232, 236, 242, .9);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 24px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            color: var(--text-title);
            font-weight: 700;
            font-size: 19px;
            letter-spacing: .5px;
        }

        .brand:hover {
            color: var(--text-title);
        }

        .brand-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            background: linear-gradient(145deg, var(--brand), var(--brand-hover));
            font-size: 16px;
            box-shadow: 0 6px 14px rgba(0, 194, 168, .24);
        }

        .brand-short {
            display: none;
        }

        .main-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .menu-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: #4a5568;
            transition: background .2s ease, color .2s ease;
        }

        .menu-link:hover {
            color: var(--text-title);
            background: #F0F3F6;
        }

        .menu-link.is-active {
            color: var(--brand-hover);
            background: rgba(0, 194, 168, .1);
            font-weight: 600;
        }

        .menu-link.is-active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: var(--brand);
        }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .search-trigger {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            width: 220px;
            height: 38px;
            padding: 0 10px 0 12px;
            border: 1px solid #DFE5EB;
            background: #fff;
            border-radius: 10px;
            color: var(--text-weak);
            font-size: 13px;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .search-trigger:hover {
            border-color: var(--brand);
            color: var(--text-body);
        }

        .search-trigger i {
            color: #98A2B3;
            font-size: 13px;
        }

        .key-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 22px;
            min-width: 26px;
            padding: 0 6px;
            margin-left: auto;
            background: #F1F5F8;
            color: #7A8499;
            border: 1px solid #E2E8F0;
            border-radius: 6px;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            font-size: 11px;
        }

        .icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            border: 1px solid #DFE5EB;
            background: #fff;
            color: #667085;
            font-size: 15px;
            transition: all .2s ease;
        }

        .icon-btn:hover {
            border-color: var(--brand);
            color: var(--brand-hover);
            box-shadow: 0 4px 10px rgba(0, 194, 168, .08);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 38px;
            padding: 0 16px;
            border: none;
            background: var(--text-title);
            color: #fff;
            border-radius: 10px;
            font-size: 14px;
            text-align: center;
            font-weight: 500;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
        }

        .header-cta:hover {
            background: #1c2631;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 18px rgba(16, 24, 40, .12);
        }

        .nav-mobile-toggle {
            display: none;
            width: 38px;
            height: 38px;
            border: 1px solid var(--border);
            background: #fff;
            border-radius: 10px;
            color: var(--text-title);
        }

        .mobile-nav-tools {
            display: none;
        }

        .site-footer {
            background: var(--bg-dark);
            color: var(--text-dim-on-dark);
            padding: 80px 0 24px;
            margin-top: 0;
        }

        .site-footer .container {
            max-width: var(--container-width);
        }

        .site-footer h4 {
            color: #fff;
            font-size: 14px;
            letter-spacing: 1px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .site-footer a {
            color: var(--text-dim-on-dark);
            transition: color .2s ease;
            font-size: 14px;
            line-height: 2.1;
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 56px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            margin-bottom: 18px;
        }

        .footer-brand .brand-mark {
            box-shadow: none;
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.9;
            margin-bottom: 12px;
        }

        .footer-note {
            color: #7b8495;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 24px 0 0;
            flex-wrap: wrap;
            color: #6f7788;
            font-size: 13px;
        }

        .footer-bottom a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .category-hero {
            position: relative;
            padding: 86px 0 72px;
            background:
                radial-gradient(circle at 82% 22%, rgba(0, 194, 168, .16), transparent 24%),
                radial-gradient(circle at 96% 82%, rgba(155, 125, 255, .12), transparent 22%),
                linear-gradient(180deg, #FFFFFF 0%, #EDF2F6 100%);
            border-bottom: 1px solid var(--border);
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(15, 23, 42, .035) 1px, transparent 1px);
            background-size: 100% 48px;
            pointer-events: none;
        }

        .category-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 34px;
        }

        .category-breadcrumb a {
            color: var(--text-weak);
        }

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

        .category-breadcrumb i {
            font-size: 11px;
            color: #C6CED8;
        }

        .category-hero .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 194, 168, .1);
            color: var(--brand-hover);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 44px;
            line-height: 1.18;
            letter-spacing: -1px;
            margin-bottom: 22px;
            font-weight: 800;
        }

        .category-hero h1 span {
            color: var(--brand-hover);
        }

        .category-hero .lead {
            font-size: 17px;
            line-height: 1.95;
            color: #536079;
            max-width: 560px;
            margin-bottom: 28px;
        }

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

        .btn-site-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 22px;
            border: none;
            background: var(--brand);
            color: #12222A;
            font-weight: 600;
            border-radius: 12px;
            font-size: 15px;
            transition: all .2s ease;
        }

        .btn-site-primary:hover {
            background: var(--brand-hover);
            color: #10141d;
            transform: translateY(-2px);
            box-shadow: 0 10px 22px rgba(0, 194, 168, .25);
        }

        .btn-site-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 22px;
            background: #ffffff;
            border: 1px solid #D6DDE4;
            color: var(--text-title);
            border-radius: 12px;
            font-size: 15px;
            font-weight: 500;
            transition: all .2s ease;
        }

        .btn-site-secondary:hover {
            border-color: var(--brand);
            color: var(--brand-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .category-hero .hero-meta {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 36px;
            font-size: 13px;
            color: var(--text-weak);
        }

        .category-hero .hero-meta i {
            color: var(--brand);
            margin-right: 6px;
        }

        .hero-figure {
            position: relative;
            z-index: 1;
        }

        .hero-figure::after {
            content: "";
            position: absolute;
            right: -14px;
            bottom: -14px;
            width: 180px;
            height: 180px;
            border: 1px solid rgba(0, 194, 168, .4);
            border-radius: 24px;
            z-index: -1;
        }

        .hero-figure img {
            width: 100%;
            border-radius: 24px;
            object-fit: cover;
            box-shadow: var(--shadow-hover);
        }

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

        .section-block .section-head {
            margin-bottom: 44px;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--brand-hover);
            letter-spacing: .5px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-kicker i {
            color: var(--accent);
        }

        .section-head h2 {
            font-size: 34px;
            letter-spacing: -.5px;
            margin-bottom: 12px;
        }

        .section-head p {
            max-width: 700px;
            color: var(--text-weak);
            font-size: 16px;
        }

        .dimension-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .dimension-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-large);
            padding: 30px 26px;
            position: relative;
            overflow: hidden;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
            box-shadow: var(--shadow);
        }

        .dimension-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--brand), transparent 70%);
            opacity: 0;
            transition: opacity .2s ease;
        }

        .dimension-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 194, 168, .25);
        }

        .dimension-card:hover::before {
            opacity: 1;
        }

        .dimension-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: #DFFBF6;
            color: var(--brand-hover);
            font-size: 20px;
            margin-bottom: 18px;
        }

        .dimension-card h3 {
            font-size: 19px;
        }

        .dimension-card p {
            color: var(--text-weak);
            font-size: 14px;
            margin-bottom: 0;
            line-height: 1.85;
        }

        .showcase-section {
            background: #fff;
        }

        .pick-list {
            display: flex;
            flex-direction: column;
            gap: 26px;
        }

        .pick-card {
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: 0;
            background: var(--bg-body);
            border: 1px solid var(--border);
            border-radius: var(--radius-large);
            overflow: hidden;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .pick-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .pick-thumb {
            position: relative;
            min-height: 200px;
        }

        .pick-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .pick-card:hover .pick-thumb img {
            transform: scale(1.04);
        }

        .pick-thumb::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(7, 12, 20, .28), transparent 55%);
        }

        .pick-index {
            position: absolute;
            left: 16px;
            bottom: 14px;
            z-index: 2;
            color: #fff;
            font-weight: 800;
            font-size: 28px;
            line-height: 1;
            text-shadow: 0 4px 16px rgba(0, 0, 0, .3);
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
        }

        .pick-content {
            padding: 26px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .pick-content h3 {
            font-size: 22px;
            margin-bottom: 8px;
        }

        .pick-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 14px;
        }

        .pick-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 10px;
            border-radius: 999px;
            background: rgba(0, 194, 168, .1);
            color: #007D6C;
            font-size: 12px;
            font-weight: 500;
        }

        .pick-tag.purple {
            background: rgba(155, 125, 255, .12);
            color: #6D4FE0;
        }

        .pick-content p {
            color: #536079;
            font-size: 14px;
            line-height: 1.9;
            max-width: 560px;
            margin-bottom: 18px;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 14px;
            color: var(--brand-hover);
        }

        .text-link i {
            transition: transform .2s ease;
        }

        .text-link:hover i {
            transform: translateX(4px);
        }

        .fits-section {
            background: var(--bg-dark);
            color: #fff;
        }

        .fits-grid {
            display: grid;
            grid-template-columns: 1fr 1.15fr;
            gap: 70px;
            align-items: center;
        }

        .fits-copy .section-head {
            margin-bottom: 28px;
        }

        .fits-copy .section-head h2 {
            color: #fff;
        }

        .fits-copy .section-head p {
            color: var(--text-dim-on-dark);
        }

        .fit-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .fit-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 14px;
            padding: 16px 18px;
            transition: background .2s ease, border-color .2s ease;
        }

        .fit-item:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(0, 194, 168, .4);
        }

        .fit-item i {
            color: var(--brand);
            font-size: 20px;
            margin-top: 3px;
        }

        .fit-item h3 {
            margin: 0 0 4px;
            font-size: 16px;
            color: #f4f7fa;
        }

        .fit-item p {
            margin: 0;
            color: var(--text-dim-on-dark);
            font-size: 14px;
            line-height: 1.7;
        }

        .fits-image img {
            width: 100%;
            border-radius: 24px;
            object-fit: cover;
            border: 1px solid rgba(255, 255, 255, .12);
            margin-bottom: 18px;
        }

        .fits-image-note {
            color: var(--text-dim-on-dark);
            font-size: 13px;
            text-align: center;
        }

        .how-section {
            background: #fff;
        }

        .how-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 28px 22px 24px;
            position: relative;
            box-shadow: var(--shadow);
            transition: transform .22s ease, box-shadow .22s ease;
        }

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

        .step-card::before {
            counter-increment: step;
            content: "0" counter(step);
            font-size: 28px;
            font-weight: 800;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            color: var(--brand);
            opacity: .2;
            display: block;
            margin-bottom: 16px;
        }

        .step-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 0;
            line-height: 1.85;
        }

        .tips-section {
            background: #F7F9FB;
        }

        .tips-card {
            background: #fff;
            border-radius: 20px;
            padding: 34px 40px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            display: grid;
            grid-template-columns: 0.8fr 2fr;
            gap: 36px;
            align-items: center;
        }

        .tips-pattern {
            background: linear-gradient(145deg, var(--brand), #7fe3d3);
            padding: 22px;
            border-radius: 16px;
            color: #0e2d2a;
            font-weight: 700;
        }

        .tips-pattern i {
            font-size: 28px;
            margin-bottom: 12px;
            display: inline-block;
        }

        .tips-pattern small {
            display: block;
            font-weight: 500;
            opacity: .72;
        }

        .tips-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 12px;
        }

        .tips-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            font-size: 15px;
            color: #3F495A;
            line-height: 1.8;
        }

        .tips-list li i {
            color: var(--brand);
            font-size: 16px;
            margin-top: 5px;
            flex-shrink: 0;
        }

        .faq-section {
            background: #fff;
        }

        .accordion-custom {
            max-width: 870px;
            margin: 0 auto;
            border-top: 1px solid var(--border);
        }

        .accordion-item {
            background: transparent;
            border: none;
            border-bottom: 1px solid var(--border);
            border-radius: 0 !important;
        }

        .accordion-button {
            background: #fff;
            color: var(--text-title);
            font-weight: 600;
            font-size: 17px;
            padding: 22px 12px;
            box-shadow: none;
            border-radius: 0;
            position: relative;
            display: flex;
            align-items: center;
        }

        .accordion-button:hover,
        .accordion-button:not(.collapsed) {
            background: #fff;
            color: var(--text-title);
            box-shadow: none;
        }

        .accordion-button:focus,
        .accordion-button:not(.collapsed):focus {
            border: none;
            box-shadow: none;
        }

        .accordion-button:not(.collapsed)::after,
        .accordion-button::after {
            background: none;
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            width: 22px;
            height: 22px;
            color: var(--brand);
            font-size: 14px;
        }

        .accordion-button:not(.collapsed)::after {
            content: "\f068";
        }

        .accordion-body {
            padding: 0 14px 26px 14px;
            color: #667085;
            font-size: 15px;
            line-height: 1.9;
        }

        .cta-collect-section {
            background: linear-gradient(135deg, #0F151C 0%, #171F2B 100%);
            padding: 90px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-collect-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(0, 194, 168, .28), transparent 70%);
        }

        .cta-collect-section::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(255, 107, 74, .2), transparent 68%);
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 740px;
            margin: 0 auto;
            color: #fff;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: 34px;
            letter-spacing: -.5px;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: var(--text-dim-on-dark);
            font-size: 16px;
            margin-bottom: 30px;
        }

        .cta-icon-line {
            display: flex;
            justify-content: center;
            gap: 14px;
            margin-bottom: 28px;
        }

        .cta-icon-line .round-icon {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .1);
            color: var(--brand);
            font-size: 17px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .btn-light-coral {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 46px;
            padding: 0 24px;
            border: none;
            border-radius: 12px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            transition: all .2s ease;
        }

        .btn-light-coral:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(255, 107, 74, .26);
        }

        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 46px;
            padding: 0 24px;
            border: 1px solid rgba(255, 255, 255, .24);
            background: transparent;
            color: #fff;
            border-radius: 12px;
            font-weight: 500;
            transition: all .2s ease;
        }

        .btn-ghost-light:hover {
            border-color: var(--brand);
            color: var(--brand);
            transform: translateY(-2px);
            background: rgba(0, 194, 168, .06);
        }

        .modal-content {
            border: none;
            border-radius: 20px;
            box-shadow: 0 30px 70px rgba(15, 23, 42, .28);
        }

        .modal-header {
            border-bottom: none;
            padding: 20px 20px 0;
        }

        .modal-body {
            padding: 18px 24px 28px;
        }

        .modal-search-row {
            display: flex;
            align-items: center;
            gap: 12px;
            background: #F5F7FA;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 0 16px;
            height: 52px;
        }

        .modal-search-row i {
            color: var(--brand);
        }

        .modal-search-row input {
            border: none;
            background: transparent;
            flex: 1;
            font-size: 16px;
            outline: none;
            height: 100%;
        }

        .modal-section-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-weak);
            margin: 24px 0 12px;
            letter-spacing: .2px;
        }

        .modal-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .modal-tags a {
            background: #F4F6F8;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 14px;
            color: #475467;
        }

        .modal-tags a:hover {
            border-color: var(--brand);
            color: var(--brand-hover);
        }

        .btn-close {
            filter: none;
        }

        @media (max-width: 1024px) {
            :root {
                --space-section: 76px;
            }

            .search-trigger {
                width: 160px;
            }

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

            .fits-grid {
                gap: 40px;
            }

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

        @media (max-width: 820px) {
            .category-hero h1 {
                font-size: 36px;
            }

            .pick-card {
                grid-template-columns: 140px 1fr;
            }

            .pick-thumb::after {
                background: linear-gradient(90deg, rgba(7, 12, 20, .15), transparent 78%);
            }

            .tips-card {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .navbar .container,
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .main-nav {
                min-height: 64px;
                gap: 12px;
            }

            .brand-full {
                display: none;
            }

            .brand-short {
                display: inline;
                font-size: 20px;
            }

            .main-menu {
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 8px;
                border-radius: 14px;
                border: 1px solid var(--border);
                box-shadow: var(--shadow-hover);
                position: absolute;
                left: 16px;
                right: 16px;
                top: calc(100% + 8px);
                z-index: 1090;
            }

            .menu-link {
                justify-content: flex-start;
                padding: 12px 14px;
                border-radius: 10px;
            }

            .menu-link.is-active::after {
                display: none;
            }

            .nav-tools {
                display: none;
            }

            .nav-mobile-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .mobile-nav-tools {
                display: flex;
                flex-direction: column;
                gap: 10px;
                border-top: 1px solid var(--border);
                padding-top: 14px;
                margin-top: 8px;
            }

            .mobile-nav-tools .search-trigger {
                width: 100%;
                border-radius: 10px;
                justify-content: flex-start;
            }

            .mobile-nav-tools .header-cta {
                justify-content: center;
                width: 100%;
                background: var(--brand);
                color: #10141d;
            }

            .category-hero {
                padding: 52px 0 40px;
            }

            .category-hero h1 {
                font-size: 31px;
            }

            .section-block {
                padding: 60px 0;
            }

            .dimension-grid,
            .how-steps {
                grid-template-columns: 1fr;
            }

            .fits-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .fits-image {
                order: -1;
            }

            .cta-inner h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }

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

            .brand-mark {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .category-hero {
                padding: 40px 0 30px;
            }

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

            .pick-card {
                grid-template-columns: 1fr;
            }

            .pick-thumb {
                min-height: 200px;
            }

            .pick-thumb::after {
                background: linear-gradient(0deg, rgba(7, 12, 20, .25), transparent 58%);
            }

            .pick-content {
                padding: 20px;
            }

            .pick-content h3 {
                font-size: 20px;
            }

            .pick-index {
                font-size: 24px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                justify-content: center;
                text-align: center;
            }

            .accordion-button {
                font-size: 15px;
                padding: 18px 4px;
            }

            .accordion-body {
                font-size: 14px;
            }

            .btn-light-coral,
            .btn-ghost-light {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --bg: #F4F6F8;
            --surface: #FFFFFF;
            --ink: #101828;
            --text: #3F495A;
            --muted: #8A94A6;
            --line: #E8ECF2;
            --brand: #00C2A8;
            --brand-dark: #00A98F;
            --accent: #FF6B4A;
            --violet: #9B7DFF;
            --green: #18B67D;
            --warning: #E6A23C;
            --danger: #D9534F;
            --dark: #0F151C;
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 8px 20px rgba(15, 25, 45, .05);
            --shadow-hover: 0 14px 34px rgba(15, 25, 45, .08);
            --header-height: 76px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            color: var(--text);
            background: var(--bg);
            font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all .2s ease;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1240px;
            padding-left: 24px;
            padding-right: 24px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 顶部结构 */
        .site-header {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--line);
            position: sticky;
            top: 0;
            z-index: 1050;
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            min-width: 0;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--brand);
            color: #0d1b24;
            font-size: 16px;
            box-shadow: 0 6px 14px rgba(0, 194, 168, .22);
            flex: 0 0 36px;
        }

        .brand-full {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .brand-short {
            display: none;
        }

        .main-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
            margin-right: auto;
        }

        .menu-link {
            font-size: 15px;
            color: var(--text);
            padding: 9px 14px;
            border-radius: 9px;
            font-weight: 500;
            white-space: nowrap;
        }

        .menu-link:hover {
            color: var(--brand-dark);
            background: rgba(0, 194, 168, .08);
        }

        .menu-link.is-active {
            background: rgba(0, 194, 168, .12);
            color: #00a689;
            font-weight: 700;
        }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 12px;
            justify-content: flex-end;
            min-width: auto;
        }

        .search-trigger {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            border: 1px solid var(--line);
            border-radius: 10px;
            height: 40px;
            padding: 0 10px 0 12px;
            color: var(--muted);
            font-size: 14px;
            box-shadow: 0 2px 6px rgba(15, 25, 45, .03);
            transition: all .2s;
        }

        .search-trigger:hover,
        .search-trigger:focus {
            color: var(--ink);
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(0, 194, 168, .12);
            outline: none;
        }

        .key-badge {
            font-size: 12px;
            background: #eef1f5;
            color: #6d7686;
            border-radius: 6px;
            padding: 1px 7px;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            border: 1px solid var(--line);
        }

        .icon-btn {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--line);
            color: var(--muted);
            background: #fff;
            transition: all .2s;
        }

        .icon-btn:hover {
            color: var(--accent);
            border-color: var(--accent);
            background: #fff8f6;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 40px;
            padding: 0 16px;
            border-radius: 10px;
            background: var(--ink);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            border: none;
        }

        .header-cta:hover {
            background: #1f2937;
            color: #fff;
            transform: translateY(-1px);
        }

        .nav-mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--line);
            background: #fff;
            color: var(--ink);
            font-size: 18px;
        }

        .mobile-nav-tools {
            display: none;
        }

        /* 分类条 */
        .category-strip {
            background: #fff;
            border-bottom: 1px solid var(--line);
            padding: 14px 0;
        }

        .strip-inner {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .strip-label {
            font-size: 13px;
            color: var(--muted);
            letter-spacing: .2em;
            font-weight: 600;
            white-space: nowrap;
            margin-right: 6px;
        }

        .strip-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid var(--line);
            background: #fff;
            color: var(--text);
            font-size: 14px;
            border-radius: 999px;
            padding: 6px 14px;
            font-weight: 500;
            transition: all .2s;
        }

        .strip-chip:hover {
            border-color: var(--brand);
            color: #008e7c;
            background: #f3fcfb;
        }

        .strip-chip .fa-solid,
        .strip-chip .fa-regular {
            color: var(--brand);
        }

        /* Hero */
        .category-hero {
            background: var(--dark);
            color: #fff;
            padding: 96px 0 88px;
            position: relative;
            overflow: hidden;
        }

        .category-hero:before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 76% 18%, rgba(0, 194, 168, .22) 0, transparent 350px), radial-gradient(circle at 20% 95%, rgba(255, 107, 74, .15) 0, transparent 300px);
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, .7);
            font-size: 14px;
            margin-bottom: 24px;
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, .7);
        }

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

        .hero-breadcrumb i {
            font-size: 11px;
            color: rgba(255, 255, 255, .4);
        }

        .category-hero h1 {
            font-size: 42px;
            line-height: 1.25;
            font-weight: 800;
            color: #fff;
            max-width: 660px;
            letter-spacing: -0.02em;
            margin: 12px 0 18px;
        }

        .category-hero h1 .text-accent {
            color: var(--brand);
        }

        .category-hero .hero-notes {
            color: #b9c1cf;
            font-size: 17px;
            line-height: 1.8;
            max-width: 620px;
            margin-bottom: 26px;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 26px;
            margin-bottom: 34px;
            color: rgba(255, 255, 255, .8);
            font-size: 14px;
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

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

        .btn-brand {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--brand);
            border: none;
            color: #0d1b24;
            height: 46px;
            padding: 0 22px;
            border-radius: 11px;
            font-size: 15px;
            font-weight: 700;
            transition: all .2s;
        }

        .btn-brand:hover {
            background: var(--brand-dark);
            color: #0d1b24;
            transform: translateY(-2px);
            box-shadow: 0 12px 26px rgba(0, 194, 168, .22);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            height: 46px;
            padding: 0 22px;
            border-radius: 11px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            transition: all .2s;
        }

        .btn-ghost:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .08);
            color: #fff;
        }

        .hero-visual {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, .35);
            margin-top: 10px;
        }

        .hero-visual img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .hero-visual:after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(10, 14, 20, .5));
        }

        /* 通用章节 */
        .section-block {
            padding: 96px 0;
        }

        .section-block.tint {
            background: #fff;
        }

        .section-heading {
            max-width: 780px;
            margin-bottom: 44px;
        }

        .section-heading .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--brand-dark);
            font-weight: 700;
            font-size: 13px;
            letter-spacing: .14em;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .section-heading h2 {
            color: var(--ink);
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: -0.02em;
        }

        .section-heading p {
            font-size: 16px;
            color: var(--text);
            margin-bottom: 0;
        }

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

        .section-heading.center .eyebrow {
            justify-content: center;
        }

        /* 分类内容卡 */
        .content-cat-card {
            height: 100%;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--line);
            padding: 26px;
            position: relative;
            transition: all .25s ease;
        }

        .content-cat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(0, 194, 168, .4);
        }

        .content-cat-card .cat-num {
            position: absolute;
            top: 24px;
            right: 24px;
            font-size: 34px;
            font-weight: 800;
            color: rgba(16, 24, 40, .06);
            font-family: ui-monospace, monospace;
        }

        .content-cat-card .cat-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 22px;
        }

        .content-cat-card .cat-icon.one {
            background: rgba(0, 194, 168, .12);
            color: var(--brand-dark);
        }

        .content-cat-card .cat-icon.two {
            background: rgba(255, 107, 74, .12);
            color: var(--accent);
        }

        .content-cat-card .cat-icon.three {
            background: rgba(155, 125, 255, .14);
            color: #7258d9;
        }

        .content-cat-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .content-cat-card p {
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 16px;
            color: var(--text);
        }

        .card-tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-pill {
            display: inline-block;
            background: #f4f7fa;
            color: #556377;
            font-size: 13px;
            border-radius: 999px;
            padding: 3px 10px;
            border: 1px solid transparent;
        }

        .tag-pill.outline {
            background: #fff;
            border-color: var(--line);
            color: var(--muted);
        }

        .tag-pill.hot {
            background: #fff3ef;
            border-color: #ffd8d0;
            color: #e5502e;
        }

        /* 交替特征块 */
        .alternating-zone {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            margin-bottom: 40px;
        }

        .alternating-zone.reverse .zone-copy {
            order: 1;
        }

        .alternating-zone.reverse .zone-image {
            order: 2;
        }

        .zone-image {
            border-radius: 22px;
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }

        .zone-image img {
            width: 100%;
            height: 300px;
            object-fit: cover;
        }

        .zone-copy h3 {
            color: var(--ink);
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .zone-copy p {
            color: var(--text);
            margin-bottom: 18px;
        }

        .zone-points {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .zone-points li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 10px 0;
            border-bottom: 1px solid var(--line);
            font-size: 15px;
        }

        .zone-points li:last-child {
            border-bottom: 0;
        }

        .zone-points li i {
            color: var(--brand);
            margin-top: 5px;
            font-size: 14px;
        }

        /* 流程 */
        .how-steps {
            counter-reset: steps;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .step-item {
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 18px;
            padding: 30px 24px;
            position: relative;
        }

        .step-item:before {
            counter-increment: steps;
            content: "0" counter(steps);
            font-size: 24px;
            font-weight: 800;
            color: var(--brand);
            font-family: ui-monospace, monospace;
            display: block;
            margin-bottom: 18px;
        }

        .step-item h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-item p {
            color: #9ca3b0;
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        .dark-panel {
            background: var(--dark);
            border-radius: 28px;
            padding: 48px;
            position: relative;
            overflow: hidden;
        }

        .dark-panel .section-heading h2 {
            color: #fff;
        }

        .dark-panel .section-heading p {
            color: #9ca3b0;
        }

        /* 索引块 */
        .index-preview-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 20px;
        }

        .preview-main-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--line);
            display: flex;
            flex-direction: column;
            min-height: 320px;
            transition: all .25s;
        }

        .preview-main-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .preview-main-card .preview-cover {
            height: 200px;
            overflow: hidden;
        }

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

        .preview-main-card .preview-body {
            padding: 24px;
            flex: 1;
        }

        .preview-main-card .preview-body h3 {
            font-size: 20px;
            color: var(--ink);
            font-weight: 700;
            margin-bottom: 10px;
        }

        .preview-main-card .preview-body p {
            color: var(--text);
            font-size: 15px;
            line-height: 1.75;
        }

        .sub-preview-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--line);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 14px;
            transition: all .25s;
        }

        .sub-preview-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(255, 107, 74, .35);
        }

        .sub-preview-card .sub-thumb {
            border-radius: 12px;
            overflow: hidden;
            height: 92px;
        }

        .sub-preview-card .sub-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .sub-preview-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.5;
        }

        .sub-preview-card p {
            color: var(--muted);
            font-size: 14px;
            margin-bottom: 0;
            flex: 1;
        }

        .sub-preview-card .tag-pill {
            align-self: flex-start;
        }

        /* CTA / 收藏 */
        .collect-zone {
            background: linear-gradient(135deg, #e9fbf8 0%, #fff6f2 100%);
            border-radius: 28px;
            padding: 64px 48px;
            position: relative;
            overflow: hidden;
        }

        .collect-zone h2 {
            color: var(--ink);
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .collect-zone p {
            color: var(--text);
            max-width: 620px;
            margin-bottom: 28px;
        }

        .collect-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
        }

        .btn-outline-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            height: 46px;
            padding: 0 20px;
            border: 1px solid rgba(16, 24, 40, .18);
            background: #fff;
            color: var(--ink);
            font-weight: 600;
            font-size: 15px;
            border-radius: 11px;
            transition: all .2s;
        }

        .btn-outline-dark:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: #fff8f6;
        }

        .collect-zone-fav {
            color: var(--accent);
            font-size: 30px;
            margin-bottom: 18px;
        }

        /* FAQ */
        .faq-shell {
            max-width: 850px;
            margin: 0 auto;
        }

        .accordion-item {
            background: #fff;
            border: 1px solid var(--line) !important;
            border-radius: 14px !important;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .accordion-button {
            border: 0;
            border-radius: 14px !important;
            box-shadow: none !important;
            background: #fff !important;
            color: var(--ink) !important;
            font-size: 17px !important;
            font-weight: 600 !important;
            padding: 20px 22px;
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .accordion-button:not(.collapsed) {
            border-bottom: 1px solid var(--line) !important;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 194, 168, .15) !important;
            outline: 0;
        }

        .accordion-button i {
            color: var(--brand);
            font-size: 15px;
            width: 16px;
        }

        .accordion-button::after {
            background: none;
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--ink);
            opacity: .45;
            transition: transform .2s;
            font-size: 14px;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .accordion-body {
            background: #fbfcfd;
            color: var(--text);
            font-size: 15px;
            line-height: 1.8;
            padding: 20px 22px;
        }

        /* 页脚 */
        .site-footer {
            background: var(--dark);
            color: #c7cdd8;
            padding: 72px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .brand-mark {
            background: var(--brand);
            width: 38px;
            height: 38px;
            color: #0d1b24;
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.8;
            color: #9ca3b0;
            margin-bottom: 12px;
        }

        .footer-note {
            font-size: 13px !important;
            color: #70798a !important;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            letter-spacing: .08em;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .footer-links a {
            color: #9ca3b0;
            font-size: 14px;
            padding: 6px 0;
            border-radius: 6px;
            transition: color .2s;
        }

        .footer-links a:hover {
            color: var(--brand);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: #818b9b;
            font-size: 14px;
        }

        .footer-bottom p {
            margin: 0;
        }

        .back-top {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #818b9b;
            font-size: 14px;
            border: 1px solid rgba(255, 255, 255, .15);
            padding: 7px 14px;
            border-radius: 999px;
        }

        .back-top:hover {
            border-color: var(--brand);
            color: var(--brand);
        }

        /* 搜索弹层 */
        .modal-content {
            border-radius: 22px;
            border: 0;
            overflow: hidden;
            box-shadow: 0 30px 90px rgba(0, 0, 0, .2);
        }

        .modal-header {
            border-bottom: 0;
            padding: 22px 26px 12px;
        }

        .search-modal-form {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 6px 26px 18px;
        }

        .search-modal-form i {
            color: var(--muted);
            font-size: 18px;
        }

        .search-modal-form input {
            border: 0;
            box-shadow: none !important;
            font-size: 18px;
            background: transparent;
            flex: 1;
            outline: none;
            color: var(--ink);
        }

        .modal-suggest {
            background: #f7f9fb;
            padding: 18px 26px 26px;
        }

        .modal-suggest .label {
            color: var(--muted);
            font-size: 13px;
            margin-bottom: 14px;
        }

        .suggest-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        /* 响应式 */
        @media (max-width: 1199.98px) {
            .how-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .index-preview-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 991.98px) {
            .main-nav {
                gap: 12px;
            }
            .nav-mobile-toggle {
                display: flex;
            }
            .main-menu {
                position: fixed;
                top: var(--header-height);
                left: 16px;
                right: 16px;
                background: #fff;
                border-radius: 18px;
                box-shadow: 0 16px 40px rgba(15, 25, 45, .14);
                padding: 16px;
                display: flex;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                z-index: 1090;
            }
            .main-menu.collapse:not(.show) {
                display: none;
            }
            .main-menu .menu-link {
                padding: 12px 16px;
            }
            .main-menu .menu-link.is-active {
                border-radius: 10px;
            }
            .nav-tools {
                display: none;
            }
            .mobile-nav-tools {
                display: flex;
                flex-direction: column;
                gap: 10px;
                margin-top: 10px;
            }
            .mobile-nav-tools .search-trigger {
                width: 100%;
                justify-content: flex-start;
            }
            .mobile-nav-tools .header-cta {
                width: 100%;
                justify-content: center;
            }
            .brand-full {
                display: none;
            }
            .brand-short {
                display: inline;
            }
            .category-hero {
                padding: 72px 0;
            }
            .category-hero h1 {
                font-size: 34px;
            }
            .hero-visual {
                margin-top: 40px;
            }
            .alternating-zone,
            .alternating-zone.reverse {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .alternating-zone.reverse .zone-copy {
                order: 2;
            }
            .alternating-zone.reverse .zone-image {
                order: 1;
            }
            .index-preview-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767.98px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .section-block {
                padding: 60px 0;
            }
            .category-hero {
                padding: 52px 0;
            }
            .category-hero h1 {
                font-size: 28px;
                letter-spacing: -.01em;
            }
            .hero-visual img {
                height: 220px;
            }
            .how-steps {
                grid-template-columns: 1fr;
            }
            .dark-panel {
                padding: 32px 22px;
            }
            .collect-zone {
                padding: 40px 24px;
                border-radius: 20px;
            }
            .collect-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .collect-actions .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                margin-bottom: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-heading h2 {
                font-size: 26px;
            }
            .strip-inner {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding-bottom: 2px;
            }
            .strip-label {
                flex: 0 0 auto;
            }
            .strip-chip {
                flex: 0 0 auto;
            }
        }

        @media (max-width: 480px) {
            .section-heading h2 {
                font-size: 23px;
            }
            .search-trigger span:not(.key-badge) {
                display: none;
            }
        }