/* roulang page: index */
:root {
            --primary: #1D4ED8;
            --primary-hover: #1E40AF;
            --accent: #0EA5E9;
            --highlight: #F59E0B;
            --bg: #F6F8FC;
            --card: #FFFFFF;
            --text: #0F172A;
            --text-secondary: #475569;
            --border: #E2E8F0;
            --shadow-card: 0 1px 3px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
            --shadow-card-hover: 0 2px 6px rgba(15, 23, 42, .08), 0 12px 32px rgba(15, 23, 42, .1);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-img: 12px;
            --radius-badge: 999px;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SFMono-Regular', 'Consolas', 'Monaco', monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-cn);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

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

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 6px rgba(15, 23, 42, .04);
        }

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: .5px;
            white-space: nowrap;
        }

        .logo-link .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 800;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all .2s ease;
            white-space: nowrap;
            cursor: pointer;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
            background: rgba(29, 78, 216, .06);
        }

        .nav-link .arrow {
            font-size: 11px;
            transition: transform .2s ease;
        }

        .nav-item:hover .arrow {
            transform: rotate(180deg);
        }

        .dropdown-panel {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 240px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card-hover);
            padding: 8px;
            z-index: 200;
        }

        .nav-item:hover .dropdown-panel,
        .nav-item:focus-within .dropdown-panel {
            display: block;
        }

        .dropdown-panel a {
            display: block;
            padding: 10px 14px;
            border-radius: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            transition: all .15s ease;
        }

        .dropdown-panel a:hover {
            background: rgba(29, 78, 216, .06);
            color: var(--primary);
        }

        .dropdown-panel .drop-label {
            display: block;
            padding: 8px 14px 4px;
            font-size: 11px;
            font-weight: 600;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: .5px;
            opacity: .7;
        }

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

        .hamburger-btn {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 8px;
            cursor: pointer;
            padding: 8px;
            transition: all .2s ease;
        }

        .hamburger-btn span {
            display: block;
            height: 2px;
            width: 100%;
            background: var(--text);
            border-radius: 2px;
            transition: all .2s ease;
        }

        .hamburger-btn:hover {
            border-color: var(--primary);
            background: rgba(29, 78, 216, .04);
        }

        .mobile-menu {
            display: none;
            background: var(--card);
            border-bottom: 1px solid var(--border);
            padding: 12px 16px 20px;
            box-shadow: var(--shadow-card);
        }

        .mobile-menu.active {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 14px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all .15s ease;
        }

        .mobile-menu a:hover {
            background: rgba(29, 78, 216, .06);
            color: var(--primary);
        }

        .mobile-menu .mobile-sub-label {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 14px 4px;
            opacity: .6;
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .site-header .header-inner {
                height: 60px;
            }
            .logo-link {
                font-size: 16px;
                letter-spacing: 0;
            }
            .logo-link .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            cursor: pointer;
            transition: all .2s ease;
            border: none;
            text-align: center;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 14px rgba(29, 78, 216, .3);
        }

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

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover {
            background: rgba(29, 78, 216, .06);
            border-color: var(--primary-hover);
        }

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

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 8px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all .25s ease;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .card-img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-img);
            transition: transform .3s ease;
        }

        .card:hover .card-img {
            transform: scale(1.02);
        }

        .card-body {
            padding: 20px 24px;
        }

        /* ===== Badges / Tags ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            font-size: 12px;
            font-weight: 600;
            line-height: 1.4;
            letter-spacing: .3px;
        }

        .badge-accent {
            background: rgba(14, 165, 233, .1);
            color: var(--accent);
        }

        .badge-highlight {
            background: rgba(245, 158, 11, .15);
            color: #B45309;
        }

        .badge-primary {
            background: rgba(29, 78, 216, .08);
            color: var(--primary);
        }

        .badge-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-secondary);
        }

        .tag {
            display: inline-flex;
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid var(--border);
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
            position: relative;
        }

        .section-alt {
            background: var(--card);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: .5px;
        }

        .section-label .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: .3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 720px;
            margin-bottom: 32px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .section-desc {
                font-size: 15px;
                margin-bottom: 24px;
            }
        }

        /* ===== Lists ===== */
        .list-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            transition: all .2s ease;
        }

        .list-item:hover {
            padding-left: 8px;
        }

        .list-item .list-date {
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--text-secondary);
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 90px;
        }

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

        .list-item .list-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            display: block;
            transition: color .15s ease;
        }

        .list-item .list-title:hover {
            color: var(--primary);
        }

        .list-item .list-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        /* ===== Hero ===== */
        .hero-section {
            padding: 72px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center;
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(246, 248, 252, .92) 0%, rgba(246, 248, 252, .88) 100%);
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 460px;
            gap: 48px;
            align-items: center;
        }

        .hero-content {
            max-width: 620px;
        }

        .hero-badge-row {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 40px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.25;
            letter-spacing: .5px;
            margin-bottom: 20px;
        }

        .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 580px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .hero-stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            max-width: 480px;
        }

        .stat-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 14px 18px;
            text-align: center;
        }

        .stat-number {
            font-family: var(--font-mono);
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }

        .stat-label {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        .hero-visual {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .hero-progress-ring {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-card);
        }

        .ring {
            position: relative;
            width: 64px;
            height: 64px;
            flex-shrink: 0;
        }

        .ring svg {
            transform: rotate(-90deg);
            width: 64px;
            height: 64px;
        }

        .ring .ring-bg {
            fill: none;
            stroke: var(--border);
            stroke-width: 8;
        }

        .ring .ring-progress {
            fill: none;
            stroke: var(--primary);
            stroke-width: 8;
            stroke-linecap: round;
            stroke-dasharray: 251.2;
            stroke-dashoffset: calc(251.2 * (1 - 0.68));
            transition: stroke-dashoffset .5s ease;
        }

        .ring-label {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
        }

        .hero-tier-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
        }

        .tier-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 14px 16px;
            box-shadow: var(--shadow-card);
            transition: all .2s ease;
        }

        .tier-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .tier-card .tier-img {
            width: 100%;
            height: 120px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 10px;
        }

        .tier-card .tier-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }

        .tier-card .tier-meta {
            font-size: 11px;
            color: var(--text-secondary);
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-visual {
                max-width: 600px;
            }
            .hero-title {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 48px 0 56px;
            }
            .hero-title {
                font-size: 26px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-stats-row {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
            }
            .stat-number {
                font-size: 20px;
            }
            .hero-tier-cards {
                grid-template-columns: repeat(3, 1fr);
                gap: 8px;
            }
            .tier-card .tier-img {
                height: 80px;
            }
            .hero-progress-ring {
                padding: 12px 16px;
                gap: 14px;
            }
            .ring {
                width: 48px;
                height: 48px;
            }
            .ring svg {
                width: 48px;
                height: 48px;
            }
            .ring .ring-bg,
            .ring .ring-progress {
                stroke-width: 6;
            }
            .ring-label {
                font-size: 13px;
            }
        }

        /* ===== Grid & Layouts ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

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

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

        @media (max-width: 1024px) {
            .grid-3, .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .grid-2, .grid-3, .grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Matrix cards (service) ===== */
        .matrix-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .matrix-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all .25s ease;
            display: flex;
            flex-direction: column;
        }

        .matrix-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .matrix-card .matrix-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .matrix-card .matrix-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 8px;
        }

        .matrix-card .matrix-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
        }

        .matrix-card .matrix-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            flex: 1;
        }

        .matrix-card .matrix-meta {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin: 8px 0 12px;
        }

        .matrix-card.wide {
            grid-column: span 2;
            flex-direction: row;
        }

        .matrix-card.wide .matrix-img {
            width: 280px;
            height: auto;
            min-height: 100%;
        }

        .matrix-card.wide .matrix-body {
            padding: 24px 28px;
        }

        @media (max-width: 768px) {
            .matrix-grid {
                grid-template-columns: 1fr;
            }
            .matrix-card.wide {
                grid-column: span 1;
                flex-direction: column;
            }
            .matrix-card.wide .matrix-img {
                width: 100%;
                height: 160px;
            }
        }

        /* ===== Horizontal scroll ===== */
        .hscroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding: 8px 4px 20px;
            scroll-snap-type: x proximity;
            -webkit-overflow-scrolling: touch;
        }

        .hscroll::-webkit-scrollbar {
            height: 6px;
        }
        .hscroll::-webkit-scrollbar-track {
            background: var(--border);
            border-radius: 3px;
        }
        .hscroll::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 3px;
        }

        .hscroll-item {
            min-width: 260px;
            flex-shrink: 0;
            scroll-snap-align: start;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all .2s ease;
        }

        .hscroll-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card-hover);
        }

        /* ===== Data bar ===== */
        .data-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
        }

        .data-item {
            text-align: center;
            padding: 12px 16px;
            border-right: 1px solid var(--border);
        }

        .data-item:last-child {
            border-right: none;
        }

        .data-item .data-number {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }

        .data-item .data-unit {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .data-item .data-desc {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        @media (max-width: 768px) {
            .data-bar {
                grid-template-columns: repeat(2, 1fr);
                padding: 24px 16px;
                gap: 12px;
            }
            .data-item {
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding: 10px 8px;
            }
            .data-item:nth-child(3),
            .data-item:nth-child(4) {
                border-bottom: none;
            }
            .data-item .data-number {
                font-size: 26px;
            }
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .step-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            box-shadow: var(--shadow-card);
            position: relative;
            transition: all .2s ease;
        }

        .step-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(29, 78, 216, .1);
            color: var(--primary);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 15px;
            margin-bottom: 14px;
        }

        .step-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .step-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Case wall ===== */
        .case-wall {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .case-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
            display: flex;
            flex-direction: column;
        }

        .case-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .case-card .case-cover {
            width: 100%;
            aspect-ratio: 3 / 4;
            object-fit: cover;
            position: relative;
        }

        .case-card .case-body {
            padding: 14px 16px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .case-card .case-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
        }

        .case-card .case-meta {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            font-size: 11px;
            color: var(--text-secondary);
        }

        @media (max-width: 1024px) {
            .case-wall {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .case-wall {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .case-card .case-body {
                padding: 10px 12px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all .2s ease;
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            list-style: none;
            transition: all .2s ease;
        }

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

        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(29, 78, 216, .08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: transform .25s ease;
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }

        .faq-item summary:hover {
            color: var(--primary);
            background: rgba(29, 78, 216, .03);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Guarantee bar ===== */
        .guarantee-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            box-shadow: var(--shadow-card);
        }

        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .guarantee-item .g-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
        }

        @media (max-width: 768px) {
            .guarantee-bar {
                grid-template-columns: repeat(2, 1fr);
                padding: 18px 16px;
            }
        }
        @media (max-width: 480px) {
            .guarantee-bar {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Contact / CTA form ===== */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .contact-form-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            box-shadow: var(--shadow-card);
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .form-input {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-size: 14px;
            color: var(--text);
            background: var(--bg);
            transition: all .2s ease;
            outline: none;
        }

        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(29, 78, 216, .1);
            background: #fff;
        }

        .form-input.error {
            border-color: #DC2626;
            box-shadow: 0 0 0 3px rgba(220, 38, 38, .08);
        }

        .form-textarea {
            resize: vertical;
            min-height: 100px;
        }

        .contact-directory {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 28px;
        }

        .contact-directory h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .contact-directory ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .contact-directory li a {
            display: block;
            padding: 10px 14px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            background: var(--card);
            border: 1px solid var(--border);
            transition: all .15s ease;
        }

        .contact-directory li a:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: rgba(29, 78, 216, .04);
        }

        @media (max-width: 768px) {
            .contact-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .contact-form-card {
                padding: 20px;
            }
            .contact-directory {
                padding: 20px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0F172A;
            color: #CBD5E1;
            padding: 48px 0 20px;
            border-top: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .footer-brand .footer-logo {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }

        .footer-brand .footer-desc {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h5 {
            font-size: 13px;
            font-weight: 700;
            color: #E2E8F0;
            margin-bottom: 14px;
            letter-spacing: .5px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: #94A3B8;
            transition: color .15s ease;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            padding-top: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: #64748B;
            flex-wrap: wrap;
        }

        .footer-bottom .footer-copy {
            display: flex;
            gap: 8px;
            align-items: center;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-bottom: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        /* ===== Utility ===== */
        .text-primary { color: var(--primary) !important; }
        .text-secondary { color: var(--text-secondary) !important; }
        .text-highlight { color: var(--highlight) !important; }
        .font-mono { font-family: var(--font-mono) !important; }
        .rounded-card { border-radius: var(--radius-card) !important; }
        .shadow-card { box-shadow: var(--shadow-card) !important; }

        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            margin: -1px;
            padding: 0;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ===== Animations & Transitions ===== */
        .fade-in-up {
            animation: fadeInUp .6s ease-out both;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== Category link restraint ===== */
        .category-link-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            border: 1px solid var(--primary);
            background: transparent;
            transition: all .2s ease;
            cursor: pointer;
        }

        .category-link-btn:hover {
            background: rgba(29, 78, 216, .06);
            border-color: var(--primary-hover);
        }

        @media (max-width: 520px) {
            .hidden-xs {
                display: none !important;
            }
        }

/* roulang page: category1 */
/* ===== 设计系统变量 ===== */
:root {
  --primary: #1D4ED8;
  --primary-hover: #1E40AF;
  --accent: #0EA5E9;
  --highlight: #F59E0B;
  --bg: #F6F8FC;
  --card: #FFFFFF;
  --text: #0F172A;
  --text-secondary: #475569;
  --border: #E2E8F0;
  --shadow-card: 0 1px 3px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
  --shadow-card-hover: 0 2px 6px rgba(15, 23, 42, .08), 0 12px 32px rgba(15, 23, 42, .1);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-img: 12px;
  --radius-badge: 999px;
  --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-mono: 'SFMono-Regular', 'Consolas', 'Monaco', monospace;
}

/* ===== 基础重置 ===== */
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-cn);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color .2s ease;
}
button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}
*, *::before, *::after {
  box-sizing: border-box;
}

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 6px rgba(15, 23, 42, .04);
}
.site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}
.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .5px;
  white-space: nowrap;
}
.logo-link .logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0;
  flex-shrink: 0;
}
.nav-desktop {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-item {
  position: relative;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all .2s ease;
  white-space: nowrap;
  cursor: pointer;
}
.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: rgba(29, 78, 216, .06);
}
.nav-link .arrow {
  font-size: 11px;
  transition: transform .2s ease;
}
.nav-item:hover .arrow {
  transform: rotate(180deg);
}
.dropdown-panel {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-card-hover);
  padding: 10px 8px;
  z-index: 50;
  margin-top: 4px;
}
.nav-item:hover .dropdown-panel,
.nav-item:focus-within .dropdown-panel {
  display: block;
}
.dropdown-panel .drop-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  opacity: .6;
  padding: 8px 14px 4px;
}
.dropdown-panel a {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all .15s ease;
}
.dropdown-panel a:hover {
  background: rgba(29, 78, 216, .06);
  color: var(--primary);
}
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  padding: 8px;
  transition: all .2s ease;
}
.hamburger-btn span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: all .2s ease;
}
.hamburger-btn:hover {
  border-color: var(--primary);
  background: rgba(29, 78, 216, .04);
}
.mobile-menu {
  display: none;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px 20px;
  box-shadow: var(--shadow-card);
}
.mobile-menu.active {
  display: block;
}
.mobile-menu a {
  display: block;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all .15s ease;
}
.mobile-menu a:hover {
  background: rgba(29, 78, 216, .06);
  color: var(--primary);
}
.mobile-menu .mobile-sub-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 14px 4px;
  opacity: .6;
}

/* ===== 面包屑 ===== */
.breadcrumb-area {
  padding: 24px 0 8px;
  font-size: 13px;
  color: var(--text-secondary);
}
.breadcrumb-area ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.breadcrumb-area ol li {
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb-area ol li::after {
  content: '›';
  color: #94A3B8;
  font-size: 16px;
  line-height: 1;
}
.breadcrumb-area ol li:last-child::after {
  display: none;
}
.breadcrumb-area ol li a {
  color: var(--text-secondary);
  transition: color .2s ease;
}
.breadcrumb-area ol li a:hover {
  color: var(--primary);
}
.breadcrumb-area ol li:last-child {
  color: var(--text);
  font-weight: 600;
}

/* ===== 分类页 H1 头部 ===== */
.cat-head {
  padding: 32px 0 20px;
}
.cat-title-wrap {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.cat-title-left h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--text);
  margin: 0 0 10px;
  line-height: 1.3;
}
.cat-title-left .cat-sub {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 780px;
  line-height: 1.7;
  margin: 0;
}
.cat-stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-badge);
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
  flex-shrink: 0;
}
.cat-stat-chip .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--highlight);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .55; transform: scale(.85); }
}

/* ===== 筛选/排序工具条 ===== */
.filter-toolbar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-card);
}
.filter-group {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.filter-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-right: 4px;
}
.filter-btn {
  padding: 6px 14px;
  border-radius: var(--radius-badge);
  font-size: 13px;
  font-weight: 500;
  background: var(--bg);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all .18s ease;
}
.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(29, 78, 216, .05);
}
.filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.sort-select {
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--card);
  cursor: pointer;
  transition: all .18s ease;
  outline: none;
}
.sort-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(29, 78, 216, .15);
}

/* ===== 主列表/非对称卡片流 ===== */
.featured-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.feat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all .25s ease;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}
.feat-card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.feat-card .card-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}
.feat-card .card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.feat-card:hover .card-img-wrap img {
  transform: scale(1.02);
}
.feat-card .card-badge-top {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-badge);
  letter-spacing: .5px;
}
.feat-card .card-badge-rate {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--highlight);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-badge);
  font-family: var(--font-mono);
}
.feat-card .card-body {
  padding: 16px 18px 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.feat-card .card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 8px;
  line-height: 1.4;
}
.feat-card .card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0 0 12px;
  line-height: 1.6;
  flex: 1;
}
.feat-card .card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12px;
  color: #94A3B8;
  font-family: var(--font-mono);
}
.feat-card .card-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.feat-card .card-meta .tag-item {
  background: rgba(14, 165, 233, .12);
  color: var(--accent);
  font-weight: 600;
  padding: 2px 10px;
  border-radius: var(--radius-badge);
  font-size: 11px;
  font-family: var(--font-cn);
}

/* ===== 热门专题横滑 ===== */
.hscroll-section {
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 12px;
  scrollbar-width: thin;
  scrollbar-color: #CBD5E1 transparent;
}
.hscroll-section::-webkit-scrollbar {
  height: 6px;
}
.hscroll-section::-webkit-scrollbar-track {
  background: transparent;
}
.hscroll-section::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 999px;
}
.hscroll-row {
  display: flex;
  gap: 14px;
  min-width: max-content;
}
.hscroll-item {
  width: 220px;
  flex-shrink: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all .22s ease;
  cursor: pointer;
}
.hscroll-item:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.hscroll-item .hscroll-img {
  aspect-ratio: 16/10;
  overflow: hidden;
}
.hscroll-item .hscroll-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.hscroll-item:hover .hscroll-img img {
  transform: scale(1.03);
}
.hscroll-item .hscroll-body {
  padding: 12px 14px 14px;
}
.hscroll-item .hscroll-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 6px;
  line-height: 1.4;
}
.hscroll-item .hscroll-tag {
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
}

/* ===== 更新频率/收录说明 ===== */
.info-strip {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.info-strip .info-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(29, 78, 216, .1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary);
  flex-shrink: 0;
}
.info-strip .info-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
  flex: 1;
  min-width: 200px;
}
.info-strip .info-text strong {
  color: var(--text);
  font-weight: 600;
}

/* ===== FAQ ===== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all .22s ease;
}
.faq-item:hover {
  border-color: #CBD5E1;
}
.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  user-select: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '＋';
  font-size: 18px;
  color: var(--text-secondary);
  transition: transform .25s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  content: '−';
  transform: rotate(180deg);
}
.faq-item summary:hover {
  color: var(--primary);
}
.faq-item .faq-body {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 相关分类入口 ===== */
.related-entry {
  background: linear-gradient(135deg, #EEF4FF 0%, #F6F8FC 60%);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  box-shadow: var(--shadow-card);
}
.related-entry .rel-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 6px;
}
.related-entry .rel-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 16px;
  line-height: 1.6;
}
.related-entry .rel-list {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.related-entry .rel-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-badge);
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  transition: all .18s ease;
}
.related-entry .rel-link:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===== CTA / 订阅 ===== */
.cta-panel {
  background: linear-gradient(135deg, #EEF4FF 0%, #E8F0FE 100%);
  border: 1px solid rgba(29, 78, 216, .15);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
}
.cta-panel .cta-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-panel .cta-info {
  flex: 1;
  min-width: 260px;
}
.cta-panel .cta-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 8px;
  line-height: 1.4;
}
.cta-panel .cta-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}
.cta-panel .cta-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.cta-panel .cta-form input {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  font-size: 14px;
  background: var(--card);
  color: var(--text);
  outline: none;
  min-width: 200px;
  transition: all .18s ease;
}
.cta-panel .cta-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(29, 78, 216, .15);
}
.cta-panel .btn-primary {
  padding: 10px 20px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s ease;
  white-space: nowrap;
}
.cta-panel .btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 14px rgba(29, 78, 216, .3);
}
.cta-panel .btn-primary:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(29, 78, 216, .4), 0 4px 14px rgba(29, 78, 216, .3);
}
.cta-panel .btn-primary:active {
  transform: translateY(1px);
}

/* ===== 板块通用 ===== */
.main-section {
  padding: 40px 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.section-head h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin: 0;
  line-height: 1.35;
}
.section-head h2 .sec-accent {
  color: var(--primary);
}
.section-head .sec-sub {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 4px 0 0;
}
.section-head .sec-more-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  transition: color .18s ease;
  white-space: nowrap;
}
.section-head .sec-more-link:hover {
  color: var(--primary-hover);
}

/* ===== 页脚 ===== */
.site-footer {
  background: #0F172A;
  color: #CBD5E1;
  padding: 48px 0 24px;
  margin-top: 40px;
}
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.site-footer .footer-brand .footer-logo {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}
.site-footer .footer-desc {
  font-size: 13px;
  color: #94A3B8;
  line-height: 1.7;
  margin-top: 10px;
}
.site-footer .footer-col h5 {
  font-size: 15px;
  font-weight: 600;
  color: #F1F5F9;
  margin: 0 0 12px;
}
.site-footer .footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer .footer-col ul li {
  margin-bottom: 8px;
}
.site-footer .footer-col ul li a {
  font-size: 13px;
  color: #94A3B8;
  transition: color .18s ease;
}
.site-footer .footer-col ul li a:hover {
  color: #fff;
}
.site-footer .footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, .2);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.site-footer .footer-copy {
  font-size: 12px;
  color: #94A3B8;
}
.site-footer .footer-copy span {
  margin-right: 16px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .nav-desktop {
    gap: 4px;
  }
  .nav-link {
    padding: 8px 10px;
    font-size: 13px;
  }
  .cat-title-left h1 {
    font-size: 28px;
  }
  .featured-list {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .site-footer .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .main-section {
    padding: 32px 0;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .nav-desktop {
    display: none;
  }
  .hamburger-btn {
    display: flex;
  }
  .site-header .header-inner {
    height: 60px;
  }
  .cat-title-left h1 {
    font-size: 24px;
    letter-spacing: .5px;
  }
  .cat-title-left .cat-sub {
    font-size: 14px;
  }
  .filter-toolbar {
    padding: 12px;
  }
  .filter-btn {
    font-size: 12px;
    padding: 5px 12px;
  }
  .section-head h2 {
    font-size: 20px;
  }
  .hscroll-item {
    width: 180px;
  }
  .info-strip {
    padding: 16px 18px;
    gap: 12px;
  }
  .cta-panel {
    padding: 24px 20px;
  }
  .cta-panel .cta-inner {
    flex-direction: column;
    align-items: stretch;
  }
  .cta-panel .cta-form input {
    min-width: 100%;
  }
  .related-entry {
    padding: 20px;
  }
  .site-footer {
    padding: 36px 0 20px;
    margin-top: 24px;
  }
  .site-footer .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .site-footer .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .main-section {
    padding: 28px 0;
  }
  .breadcrumb-area {
    padding: 16px 0 4px;
  }
}

@media (max-width: 520px) {
  .cat-title-wrap {
    flex-direction: column;
    gap: 12px;
  }
  .cat-stat-chip {
    align-self: flex-start;
  }
  .filter-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .hscroll-item {
    width: 160px;
  }
  .feat-card .card-title {
    font-size: 15px;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
}