/* roulang page: index */
:root {
            --brand: #00E5A0;
            --accent: #38BDF8;
            --amber: #F59E0B;
            --bg: #060B16;
            --text: #E6EDF6;
            --text-2: #93A4BF;
            --text-3: #5B6B85;
            --glass-bg: rgba(255, 255, 255, 0.04);
            --glass-border: rgba(255, 255, 255, 0.10);
            --radius-lg: 20px;
            --radius-md: 14px;
            --shadow-glow: 0 0 40px rgba(0, 229, 160, 0.08);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        .container {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        .section-padding {
            padding: 80px 0;
        }

        @media (min-width: 768px) {
            .section-padding {
                padding: 112px 0;
            }
        }

        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            border-top: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand);
            color: #04121a;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: 12px;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 30px rgba(0, 229, 160, 0.35);
            gap: 8px;
        }

        .btn-primary:hover {
            background: #2affb6;
            box-shadow: 0 0 44px rgba(0, 229, 160, 0.5);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: scale(0.97);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.3);
            background: #00c88d;
        }

        .btn-primary:focus-visible {
            outline: 2px solid #2affb6;
            outline-offset: 3px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--text);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            cursor: pointer;
            transition: all 0.3s ease;
            gap: 8px;
        }

        .btn-secondary:hover {
            border-color: var(--brand);
            color: var(--brand);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.15);
        }

        .btn-secondary:active {
            transform: scale(0.97);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid rgba(0, 229, 160, 0.5);
            outline-offset: 3px;
        }

        .badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(0, 229, 160, 0.12);
            color: var(--brand);
            border: 1px solid rgba(0, 229, 160, 0.25);
        }

        .input-field {
            width: 100%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 12px;
            padding: 14px 18px;
            color: var(--text);
            font-size: 15px;
            transition: all 0.3s ease;
        }

        .input-field::placeholder {
            color: var(--text-3);
        }

        .input-field:focus {
            border-color: rgba(0, 229, 160, 0.6);
            box-shadow: 0 0 0 4px rgba(0, 229, 160, 0.10);
            background: rgba(255, 255, 255, 0.06);
        }

        .input-field:focus-visible {
            outline: none;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 36px;
            }
        }

        .section-subtitle {
            color: var(--text-2);
            font-size: 16px;
            margin-top: 12px;
            max-width: 560px;
        }

        .grid-pattern {
            background-image:
                linear-gradient(rgba(0, 229, 160, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 229, 160, 0.05) 1px, transparent 1px);
            background-size: 60px 60px;
        }

        .glow-orb {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            pointer-events: none;
        }

        /* ===== Header / Nav ===== */
        #site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(6, 11, 22, 0.85);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.3s ease;
        }

        #site-header.scrolled {
            background: rgba(4, 7, 13, 0.95);
            border-bottom-color: rgba(255, 255, 255, 0.1);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        }

        #site-header.scrolled .header-top {
            padding: 12px 0;
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            transition: padding 0.3s ease;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.01em;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--brand), #00a86b);
            border-radius: 9px;
            color: #04121a;
            font-weight: 900;
            font-size: 14px;
            flex-shrink: 0;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .header-tool-btn {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            color: var(--text-2);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .header-tool-btn:hover {
            color: var(--brand);
            border-color: rgba(0, 229, 160, 0.4);
            background: rgba(0, 229, 160, 0.08);
        }

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

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 0;
        }

        .nav-link {
            position: relative;
            display: block;
            padding: 12px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-2);
            transition: color 0.2s ease;
        }

        .nav-link:hover {
            color: var(--text);
        }

        .nav-link.active {
            color: var(--brand);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--brand);
            border-radius: 2px 2px 0 0;
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.5);
        }

        .nav-right {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 12px;
            padding-left: 16px;
        }

        .search-trigger {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-2);
            padding: 6px 14px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            background: rgba(255, 255, 255, 0.02);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .search-trigger:hover {
            color: var(--brand);
            border-color: rgba(0, 229, 160, 0.3);
        }

        .search-panel {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(6, 11, 22, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: none;
        }

        .search-panel.open {
            display: block;
        }

        .search-input-group {
            display: flex;
            gap: 10px;
        }

        .search-input-group input {
            flex: 1;
        }

        .hot-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 14px;
            align-items: center;
        }

        .hot-tags .hot-label {
            font-size: 12px;
            color: var(--text-3);
            margin-right: 4px;
        }

        .hot-tag {
            display: inline-block;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-2);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .hot-tag:hover {
            color: var(--brand);
            border-color: rgba(0, 229, 160, 0.4);
            background: rgba(0, 229, 160, 0.06);
        }

        /* 汉堡 */
        .burger {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            cursor: pointer;
        }

        .burger span {
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .burger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .burger.open span:nth-child(2) {
            opacity: 0;
        }

        .burger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 移动抽屉 */
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }

        .drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: #0a1020;
            z-index: 999;
            padding: 80px 24px 32px;
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: -16px 0 48px rgba(0, 0, 0, 0.5);
            overflow-y: auto;
        }

        .drawer.open {
            right: 0;
        }

        .drawer .drawer-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .drawer .drawer-link {
            padding: 14px 8px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-2);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: all 0.2s ease;
        }

        .drawer .drawer-link:hover {
            color: var(--brand);
            padding-left: 14px;
        }

        .drawer .drawer-link.active {
            color: var(--brand);
        }

        .drawer-cta {
            margin-top: 28px;
        }

        @media (max-width: 1023px) {
            .header-nav {
                display: none;
            }

            .burger {
                display: flex;
            }
        }

        /* ===== Hero ===== */
        #hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 140px 0 80px;
            overflow: hidden;
            background-color: #060B16;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(6, 11, 22, 0.96) 20%, rgba(6, 11, 22, 0.75) 50%, rgba(6, 11, 22, 0.9) 100%);
            z-index: 1;
        }

        .hero-grid-overlay {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(0, 229, 160, 0.06) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 229, 160, 0.06) 1px, transparent 1px);
            background-size: 56px 56px;
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: 44px;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.02em;
            background: linear-gradient(120deg, #ffffff 0%, var(--brand) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        @media (min-width: 768px) {
            .hero-title {
                font-size: 58px;
            }
        }

        .hero-desc {
            font-size: 17px;
            color: var(--text-2);
            margin-top: 20px;
            max-width: 480px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 32px;
        }

        .hero-card {
            position: relative;
            z-index: 2;
            padding: 28px;
            border-radius: 24px;
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(30px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.12);
        }

        .hero-card-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .hero-card-sub {
            font-size: 13px;
            color: var(--text-2);
            margin-bottom: 22px;
        }

        .hero-card-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .hero-card .form-label {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-2);
            margin-bottom: 4px;
        }

        .hero-card .btn-primary {
            width: 100%;
        }

        .hero-card-tip {
            font-size: 12px;
            color: var(--text-3);
            margin-top: 16px;
            line-height: 1.5;
        }

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

        .hero-mini-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--text-2);
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.07);
        }

        .hero-mini-badge svg {
            width: 14px;
            height: 14px;
            color: var(--brand);
        }

        /* ===== Features ===== */
        #features {
            position: relative;
        }

        .feature-card {
            border-radius: var(--radius-lg);
            padding: 28px;
            position: relative;
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .feature-card:hover {
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 0 40px rgba(0, 229, 160, 0.12);
            transform: translateY(-4px);
        }

        .feature-card:hover .feature-icon {
            transform: scale(1.08);
        }

        .feature-num {
            position: absolute;
            top: 20px;
            right: 20px;
            font-family: 'Inter', sans-serif;
            font-size: 13px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.12);
            letter-spacing: 0.05em;
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 229, 160, 0.1);
            border-radius: 14px;
            color: var(--brand);
            transition: transform 0.3s ease;
            clip-path: polygon(50% 0%, 93% 25%, 93% 75%, 50% 100%, 7% 75%, 7% 25%);
        }

        .feature-icon svg {
            width: 26px;
            height: 26px;
        }

        .feature-card-title {
            font-size: 18px;
            font-weight: 700;
            margin-top: 20px;
        }

        .feature-card-desc {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.7;
            margin-top: 10px;
        }

        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--brand);
            margin-top: 16px;
            transition: gap 0.2s ease;
        }

        .feature-link:hover {
            gap: 10px;
        }

        /* ===== Demo ===== */
        #demo {
            position: relative;
        }

        .demo-row {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
        }

        @media (min-width: 768px) {
            .demo-row {
                grid-template-columns: 5fr 7fr;
                gap: 56px;
            }

            .demo-row.reverse {
                grid-template-columns: 7fr 5fr;
            }

            .demo-row.reverse .demo-image-wrap {
                order: 1;
            }

            .demo-row.reverse .demo-content-wrap {
                order: 2;
            }
        }

        .demo-image-wrap {
            position: relative;
        }

        .demo-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
        }

        .demo-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .demo-content-title {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .demo-content-desc {
            color: var(--text-2);
            font-size: 15px;
            line-height: 1.8;
        }

        .demo-list {
            margin-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .demo-list-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-2);
        }

        .demo-list-item svg {
            width: 18px;
            height: 18px;
            color: var(--brand);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .demo-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--accent);
            background: rgba(56, 189, 248, 0.08);
            border: 1px solid rgba(56, 189, 248, 0.2);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        /* ===== Evidence ===== */
        #evidence {
            position: relative;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        @media (min-width: 768px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        .stat-card {
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            background: rgba(0, 229, 160, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        .stat-number {
            font-family: 'Inter', sans-serif;
            font-size: 36px;
            font-weight: 800;
            color: var(--brand);
            line-height: 1.1;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-2);
            margin-top: 8px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.25s ease;
        }

        .news-item:hover {
            background: rgba(0, 229, 160, 0.04);
            border-color: rgba(0, 229, 160, 0.15);
            transform: translateX(4px);
        }

        .news-cat {
            flex-shrink: 0;
        }

        .news-body {
            flex: 1;
            min-width: 0;
        }

        .news-title {
            font-size: 15px;
            font-weight: 600;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-summary {
            font-size: 13px;
            color: var(--text-3);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-top: 2px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-size: 12px;
            color: var(--text-3);
        }

        .news-arrow {
            color: var(--text-3);
            transition: color 0.2s ease;
        }

        .news-item:hover .news-arrow {
            color: var(--brand);
        }

        .news-empty {
            border: 2px dashed rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 48px 24px;
            text-align: center;
            color: var(--text-3);
        }

        .news-empty-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-3);
        }

        /* ===== Pricing ===== */
        #pricing {
            position: relative;
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
            align-items: start;
        }

        @media (min-width: 1024px) {
            .pricing-grid {
                grid-template-columns: 1fr 1.1fr 1fr;
            }

            .pricing-card-featured {
                transform: translateY(-20px);
            }
        }

        .pricing-card {
            border-radius: var(--radius-lg);
            padding: 28px;
            position: relative;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }

        .pricing-card-featured {
            background: linear-gradient(160deg, rgba(0, 229, 160, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
            border-color: rgba(0, 229, 160, 0.25);
            box-shadow: 0 0 48px rgba(0, 229, 160, 0.10);
        }

        .pricing-recommend {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--amber);
            color: #1a1202;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 18px;
            border-radius: 999px;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
            white-space: nowrap;
        }

        .pricing-plan-name {
            font-size: 18px;
            font-weight: 700;
        }

        .pricing-plan-desc {
            font-size: 13px;
            color: var(--text-2);
            margin-top: 6px;
        }

        .pricing-price {
            margin-top: 20px;
            display: flex;
            align-items: baseline;
            gap: 4px;
        }

        .pricing-price .amount {
            font-family: 'Inter', sans-serif;
            font-size: 44px;
            font-weight: 800;
            line-height: 1;
        }

        .pricing-price .unit {
            font-size: 14px;
            color: var(--text-2);
        }

        .pricing-features {
            list-style: none;
            margin-top: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .pricing-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-2);
        }

        .pricing-features li svg {
            width: 16px;
            height: 16px;
            color: var(--brand);
            flex-shrink: 0;
        }

        .pricing-card .btn-primary,
        .pricing-card .btn-secondary {
            margin-top: 28px;
            width: 100%;
        }

        /* ===== FAQ ===== */
        #faq {
            position: relative;
        }

        .faq-left {
            position: sticky;
            top: 160px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.3s ease;
        }

        .faq-item:first-child {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 4px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            transition: color 0.2s ease;
            user-select: none;
        }

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

        .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
            color: var(--text-2);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--brand);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.8;
            padding: 0 4px;
        }

        .faq-item.active {
            border-left: 2px solid var(--brand);
            padding-left: 14px;
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-item.active .faq-answer {
            max-height: 240px;
            padding-bottom: 20px;
        }

        /* ===== CTA ===== */
        #cta {
            position: relative;
            overflow: hidden;
        }

        .cta-banner {
            position: relative;
            border-radius: 28px;
            padding: 48px 32px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 12px;
        }

        @media (min-width: 768px) {
            .cta-banner {
                flex-direction: row;
                text-align: left;
                justify-content: space-between;
                padding: 56px 48px;
            }
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 240px;
            height: 240px;
            background: rgba(0, 229, 160, 0.1);
            filter: blur(80px);
            border-radius: 50%;
        }

        .cta-title {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .cta-desc {
            color: var(--text-2);
            font-size: 15px;
            max-width: 480px;
        }

        /* ===== Footer ===== */
        #site-footer {
            background: #04070D;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 60px 0 0;
        }

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

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.2fr;
            }
        }

        .footer-brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 17px;
            font-weight: 800;
            color: var(--text);
        }

        .footer-brand-desc {
            font-size: 14px;
            color: var(--text-3);
            margin-top: 16px;
            line-height: 1.7;
            max-width: 260px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--text-2);
            transition: all 0.2s ease;
        }

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

        .footer-contact-info {
            font-size: 14px;
            color: var(--text-2);
            line-height: 2;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
            justify-content: space-between;
            align-items: center;
        }

        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
            }
        }

        .footer-copyright {
            font-size: 13px;
            color: var(--text-3);
        }

        .footer-icp {
            font-size: 13px;
            color: var(--text-3);
        }

        /* ===== 浮动 CTA ===== */
        .float-cta {
            position: fixed;
            bottom: 88px;
            right: 24px;
            z-index: 900;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--brand);
            color: #04121a;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 30px rgba(0, 229, 160, 0.4);
            cursor: pointer;
            transition: all 0.3s ease;
            animation: pulse-glow 2s infinite;
        }

        .float-cta:hover {
            transform: scale(1.08);
            box-shadow: 0 0 44px rgba(0, 229, 160, 0.6);
        }

        .float-cta:active {
            transform: scale(0.94);
        }

        .float-cta svg {
            width: 24px;
            height: 24px;
        }

        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(0, 229, 160, 0.3);
            }

            50% {
                box-shadow: 0 0 36px rgba(0, 229, 160, 0.55);
            }
        }

        .float-cta-mobile {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 900;
            background: rgba(6, 11, 22, 0.95);
            backdrop-filter: blur(20px);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 14px 16px;
            padding-bottom: calc(14px + env(safe-area-inset-bottom));
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .float-cta-mobile .fcm-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
        }

        @media (max-width: 767px) {
            .float-cta {
                display: none;
            }

            .float-cta-mobile {
                display: flex;
            }

            body {
                padding-bottom: 64px;
            }
        }

        /* ===== 通用辅助 ===== */
        .text-gradient {
            background: linear-gradient(120deg, var(--brand), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .divider {
            width: 48px;
            height: 3px;
            background: var(--brand);
            border-radius: 3px;
            margin-top: 16px;
        }

        .section-header {
            margin-bottom: 48px;
        }

/* roulang page: article */
:root {
            --brand: #00E5A0;
            --brand-light: #4DFFC0;
            --blue: #38BDF8;
            --amber: #F59E0B;
            --bg: #060B16;
            --bg-deep: #04070D;
            --panel: rgba(255, 255, 255, 0.04);
            --border: rgba(255, 255, 255, 0.10);
            --text-main: #E6EDF6;
            --text-sub: #93A4BF;
            --text-weak: #5B6B85;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg);
            color: var(--text-main);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            display: block;
            max-width: 100%;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s;
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
            color: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        /* ===== Header ===== */
        #site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 11, 22, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow .3s;
        }
        #site-header.scrolled {
            background: rgba(4, 7, 13, 0.96);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0 6px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: #fff;
        }
        .logo .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 229, 160, 0.14);
            border: 1px solid rgba(0, 229, 160, 0.35);
            color: var(--brand);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.18);
        }
        .header-tools {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .header-tool-btn {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-sub);
            border: 1px solid var(--border);
            transition: all .2s;
        }
        .header-tool-btn:hover {
            color: var(--brand);
            border-color: rgba(0, 229, 160, 0.4);
        }
        .burger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            border: 1px solid var(--border);
            padding: 8px;
        }
        .burger span {
            display: block;
            height: 2px;
            border-radius: 2px;
            background: var(--text-main);
            transition: all .25s;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 4px 0 12px;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            padding: 8px 16px;
            border-radius: 10px;
            border-bottom: 2px solid transparent;
            transition: all .2s;
        }
        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-link.active {
            color: var(--brand);
            border-bottom-color: var(--brand);
        }
        .nav-right {
            margin-left: auto;
            display: flex;
            align-items: center;
        }
        .search-trigger {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-sub);
            padding: 7px 14px;
            border-radius: 999px;
            border: 1px solid var(--border);
            transition: all .2s;
        }
        .search-trigger:hover {
            color: var(--brand);
            border-color: rgba(0, 229, 160, 0.4);
        }
        .search-panel {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--bg-deep);
            border-bottom: 1px solid var(--border);
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
            z-index: 99;
        }
        .search-panel.open {
            max-height: 220px;
            padding: 18px 0 22px;
        }
        .search-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }
        .search-inner input {
            flex: 1;
            min-width: 200px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 10px 16px;
            color: var(--text-main);
            font-size: 14px;
            outline: none;
            transition: all .2s;
        }
        .search-inner input:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 4px rgba(0, 229, 160, 0.12);
        }
        .hot-tag {
            font-size: 12px;
            padding: 5px 12px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            color: var(--text-sub);
            transition: all .2s;
        }
        .hot-tag:hover {
            color: var(--brand);
            border-color: rgba(0, 229, 160, 0.4);
        }

        /* ===== Mobile Drawer ===== */
        .mobile-drawer {
            position: fixed;
            inset: 0;
            z-index: 200;
            visibility: hidden;
            opacity: 0;
            background: rgba(4, 7, 13, 0.65);
            backdrop-filter: blur(4px);
            transition: all .3s;
        }
        .mobile-drawer.open {
            visibility: visible;
            opacity: 1;
        }
        .drawer-panel {
            position: absolute;
            top: 0;
            right: 0;
            height: 100%;
            width: min(340px, 85%);
            background: var(--bg-deep);
            border-left: 1px solid var(--border);
            padding: 28px 24px;
            transform: translateX(100%);
            transition: transform .3s ease;
            display: flex;
            flex-direction: column;
        }
        .mobile-drawer.open .drawer-panel {
            transform: translateX(0);
        }
        .drawer-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
        }
        .drawer-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
        }
        .drawer-close {
            font-size: 28px;
            line-height: 1;
            color: var(--text-sub);
            transition: color .2s;
        }
        .drawer-close:hover {
            color: var(--brand);
        }
        .drawer-link {
            display: block;
            font-size: 17px;
            font-weight: 600;
            padding: 14px 0;
            color: var(--text-sub);
            border-bottom: 1px solid var(--border);
        }
        .drawer-link.active {
            color: var(--brand);
        }
        .drawer-cta {
            margin-top: auto;
            padding-top: 24px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 600;
            transition: all .2s;
            border: 1px solid transparent;
            line-height: 1.6;
        }
        .btn-primary {
            background: var(--brand);
            color: #04120C;
            box-shadow: 0 0 30px rgba(0, 229, 160, 0.3);
        }
        .btn-primary:hover {
            background: var(--brand-light);
            box-shadow: 0 0 44px rgba(0, 229, 160, 0.45);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: scale(0.97);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.28);
        }
        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-sub);
        }
        .btn-secondary:hover {
            border-color: var(--brand);
            color: var(--brand);
        }
        .btn-secondary:active {
            transform: scale(0.97);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            border-bottom: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.015);
        }
        .breadcrumb-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            padding-bottom: 14px;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-sub);
        }
        .breadcrumb-nav a {
            color: var(--text-sub);
            transition: color .2s;
        }
        .breadcrumb-nav a:hover {
            color: var(--brand);
        }
        .breadcrumb-nav .sep {
            color: var(--text-weak);
        }
        .breadcrumb-nav .current {
            color: var(--text-main);
            max-width: 280px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .breadcrumb-share {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .share-btn {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-sub);
            transition: all .2s;
        }
        .share-btn:hover {
            color: var(--brand);
            border-color: rgba(0, 229, 160, 0.4);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 88px 0 72px;
        }
        .article-hero-mask {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 11, 22, 0.72) 0%, rgba(6, 11, 22, 0.92) 100%);
        }
        .article-hero-content {
            position: relative;
            max-width: 860px;
        }
        .cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 229, 160, 0.12);
            color: var(--brand);
            border: 1px solid rgba(0, 229, 160, 0.3);
            padding: 5px 16px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            transition: all .2s;
        }
        .cat-badge:hover {
            background: rgba(0, 229, 160, 0.2);
        }
        .article-hero h1 {
            font-size: clamp(30px, 5vw, 46px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: #fff;
            margin: 20px 0 14px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
            color: var(--text-sub);
            font-size: 13px;
            margin-bottom: 18px;
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-summary {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            max-width: 720px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 56px 0 72px;
        }
        .article-body-wrap {
            max-width: 780px;
            margin: 0 auto;
        }
        .article-divider {
            width: 56px;
            height: 3px;
            border-radius: 3px;
            background: var(--brand);
            margin: 0 auto 48px;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: #C7D2E4;
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: #F1F5F9;
            margin: 42px 0 18px;
            padding-left: 14px;
            border-left: 3px solid var(--brand);
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: #E2E8F0;
            margin: 32px 0 14px;
        }
        .article-body p {
            margin-bottom: 22px;
        }
        .article-body a {
            color: var(--brand);
            border-bottom: 1px solid rgba(0, 229, 160, 0.3);
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 24px;
            padding-left: 26px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body ul li::marker {
            color: var(--brand);
        }
        .article-body blockquote {
            border-left: 3px solid var(--brand);
            background: rgba(0, 229, 160, 0.06);
            padding: 18px 22px;
            border-radius: 10px;
            margin: 28px 0;
            font-style: italic;
            color: var(--text-sub);
        }
        .article-body img {
            border-radius: 14px;
            margin: 26px 0;
        }
        .article-body figure {
            margin: 34px 0;
        }
        .article-body figcaption {
            text-align: center;
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 10px;
        }

        /* ===== Empty State ===== */
        .article-empty {
            text-align: center;
            padding: 72px 24px;
            border: 1px dashed var(--border);
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.02);
        }
        .empty-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            color: var(--text-weak);
        }
        .article-empty p {
            color: var(--text-sub);
            font-size: 16px;
            margin-bottom: 24px;
        }

        /* ===== Related ===== */
        .related-section {
            padding: 64px 0 80px;
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
        }
        .section-head {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-head h2 {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .section-head p {
            color: var(--text-sub);
            font-size: 14px;
            margin-top: 8px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }
        .related-card {
            background: var(--panel);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: all .25s;
        }
        .related-card:hover {
            transform: translateY(-5px);
            border-color: rgba(0, 229, 160, 0.35);
            box-shadow: 0 0 34px rgba(0, 229, 160, 0.08);
        }
        .related-cover {
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s;
        }
        .related-card:hover .related-cover img {
            transform: scale(1.05);
        }
        .related-body {
            padding: 18px;
        }
        .tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: var(--brand);
            background: rgba(0, 229, 160, 0.1);
            border: 1px solid rgba(0, 229, 160, 0.25);
            padding: 3px 10px;
            border-radius: 999px;
            margin-bottom: 10px;
        }
        .related-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: #E6EDF6;
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .related-body p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .related-meta {
            font-size: 12px;
            color: var(--text-weak);
        }

        /* ===== Article Back ===== */
        .article-back {
            padding: 44px 0 60px;
        }
        .back-links {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 18px;
            flex-wrap: wrap;
        }
        .back-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-sub);
            padding: 9px 22px;
            border-radius: 999px;
            border: 1px solid var(--border);
            transition: all .2s;
        }
        .back-link:hover {
            color: var(--brand);
            border-color: rgba(0, 229, 160, 0.4);
        }

        /* ===== Footer ===== */
        #site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            padding: 60px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 17px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 229, 160, 0.14);
            border: 1px solid rgba(0, 229, 160, 0.35);
            color: var(--brand);
        }
        .footer-brand-desc {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 280px;
        }
        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: #E6EDF6;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-sub);
            transition: color .2s;
        }
        .footer-links a:hover {
            color: var(--brand);
        }
        .footer-contact-info {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 2;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 24px;
        }
        .footer-copyright {
            font-size: 13px;
            color: var(--text-sub);
        }
        .footer-icp {
            font-size: 12px;
            color: var(--text-weak);
        }

        /* ===== Floating CTA ===== */
        .floating-cta {
            position: fixed;
            right: 28px;
            bottom: 28px;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--brand);
            color: #04120C;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 30px rgba(0, 229, 160, 0.45);
            animation: cta-pulse 2.4s infinite;
            transition: transform .2s;
        }
        .floating-cta:hover {
            transform: scale(1.08);
        }
        .floating-cta:active {
            transform: scale(0.95);
        }
        @keyframes cta-pulse {
            0%,
            100% {
                box-shadow: 0 0 24px rgba(0, 229, 160, 0.35);
            }
            50% {
                box-shadow: 0 0 40px rgba(0, 229, 160, 0.6);
            }
        }
        .mobile-cta {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: rgba(4, 7, 13, 0.94);
            backdrop-filter: blur(14px);
            border-top: 1px solid var(--border);
            padding: 10px 16px;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
        }
        .mobile-cta span {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }
        .mobile-cta .btn {
            padding: 8px 18px;
            font-size: 13px;
            flex-shrink: 0;
        }

        /* ===== CTA Modal ===== */
        .cta-modal {
            position: fixed;
            inset: 0;
            z-index: 300;
            display: flex;
            align-items: center;
            justify-content: center;
            visibility: hidden;
            opacity: 0;
            transition: all .25s;
            background: rgba(4, 7, 13, 0.72);
            backdrop-filter: blur(6px);
        }
        .cta-modal.open {
            visibility: visible;
            opacity: 1;
        }
        .cta-modal-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 32px;
            width: min(440px, 90%);
            transform: scale(0.92);
            transition: transform .25s;
            position: relative;
        }
        .cta-modal.open .cta-modal-card {
            transform: scale(1);
        }
        .cta-modal-card h3 {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-modal-card>p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 22px;
        }
        .cta-close {
            position: absolute;
            top: 16px;
            right: 18px;
            font-size: 24px;
            line-height: 1;
            color: var(--text-sub);
            transition: color .2s;
        }
        .cta-close:hover {
            color: var(--brand);
        }
        .cta-modal-card input {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 12px 16px;
            color: var(--text-main);
            font-size: 14px;
            outline: none;
            margin-bottom: 14px;
            transition: all .2s;
        }
        .cta-modal-card input:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 4px rgba(0, 229, 160, 0.12);
        }
        .cta-tip {
            font-size: 12px;
            color: var(--text-weak);
            text-align: center;
            margin-top: 14px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .header-nav {
                display: none;
            }
            .burger {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .floating-cta {
                display: none;
            }
            .mobile-cta {
                display: flex;
            }
            body {
                padding-bottom: 62px;
            }
            .article-hero {
                padding: 56px 0 48px;
            }
            .article-main {
                padding: 40px 0 56px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .breadcrumb-share {
                display: none;
            }
            .breadcrumb-nav .current {
                max-width: 180px;
            }
            .article-hero h1 {
                font-size: 28px;
            }
            .article-meta {
                flex-direction: column;
                gap: 4px;
            }
            .related-body h3 {
                font-size: 16px;
            }
        }

/* roulang page: category1 */
:root {
  --brand: #00E5A0;
  --brand-bright: #4FF0C0;
  --blue: #38BDF8;
  --amber: #F59E0B;
  --bg-deep: #060B16;
  --bg-dark: #04070D;
  --bg-soft: #0b1524;
  --text-main: #E6EDF6;
  --text-secondary: #93A4BF;
  --text-muted: #5B6B85;
  --border: rgba(255,255,255,0.10);
  --border-brand: rgba(0,229,160,0.35);
  --card-bg: rgba(255,255,255,0.04);
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow-brand: 0 0 40px rgba(0,229,160,0.10);
  --shadow-card: 0 12px 40px rgba(0,0,0,0.30);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif; background: var(--bg-deep); color: var(--text-main); line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
@media (min-width:768px) { .container { padding: 0 32px; } }

/* Header */
#site-header { position: sticky; top: 0; z-index: 999; background: rgba(6,11,22,0.82); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid rgba(255,255,255,0.06); transition: background .3s ease, box-shadow .3s ease; }
#site-header.scrolled { background: rgba(4,7,13,0.97); box-shadow: 0 12px 32px rgba(0,0,0,0.35); border-bottom-color: rgba(255,255,255,0.12); }
#site-header .container { display: flex; flex-direction: column; padding-top: 10px; padding-bottom: 0; }
.header-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; width: 100%; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; letter-spacing: -0.02em; color: var(--text-main); transition: color .2s; }
.logo:hover { color: var(--brand); }
.logo-icon { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; border-radius: 9px; background: rgba(0,229,160,0.12); border: 1px solid rgba(0,229,160,0.35); color: var(--brand); transition: transform .2s, box-shadow .2s; }
.logo:hover .logo-icon { transform: scale(1.05); box-shadow: 0 0 16px rgba(0,229,160,0.3); }
.header-tools { display: flex; align-items: center; gap: 6px; }
.header-tool-btn { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 11px; color: var(--text-secondary); transition: color .2s, background .2s; }
.header-tool-btn:hover { color: var(--brand); background: rgba(0,229,160,0.08); }
.header-tool-btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.burger { display: none; flex-direction: column; gap: 5px; padding: 8px; border-radius: 8px; transition: background .2s; }
.burger:hover { background: rgba(255,255,255,0.06); }
.burger span { width: 20px; height: 2px; background: var(--text-main); border-radius: 2px; transition: transform .3s, opacity .3s; }
.header-nav { display: flex; align-items: center; gap: 28px; padding: 4px 0 12px; }
.nav-link { position: relative; padding: 4px 2px; color: var(--text-secondary); font-size: 15px; font-weight: 600; transition: color .2s; }
.nav-link:hover { color: var(--brand); }
.nav-link.active { color: var(--brand); }
.nav-link.active::after { content: ''; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px; border-radius: 2px; background: var(--brand); }
.nav-right { margin-left: auto; }
.search-trigger { display: inline-flex; align-items: center; gap: 6px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.10); color: var(--text-secondary); padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 500; transition: all .2s; }
.search-trigger:hover { color: var(--brand); border-color: rgba(0,229,160,0.4); background: rgba(0,229,160,0.06); }
.search-trigger:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.nav-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 998; opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s; }
.nav-overlay.open { opacity: 1; visibility: visible; }

@media (max-width: 1024px) {
  #site-header .container { padding-top: 8px; }
  .burger { display: inline-flex; }
  .header-nav { position: fixed; top: 0; right: 0; bottom: 0; z-index: 1000; width: 320px; max-width: 85vw; background: var(--bg-dark); border-left: 1px solid rgba(255,255,255,0.10); flex-direction: column; align-items: flex-start; padding: 100px 28px 40px; gap: 8px; transform: translateX(100%); transition: transform .35s ease; box-shadow: -24px 0 60px rgba(0,0,0,0.4); }
  .header-nav.open { transform: translateX(0); }
  .header-nav .nav-link { font-size: 18px; font-weight: 700; padding: 12px 0; width: 100%; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .header-nav .nav-link.active::after { display: none; }
  .header-nav .nav-link.active { color: var(--brand); }
  .nav-right { margin-left: 0; width: 100%; margin-top: 20px; }
  .search-trigger { width: 100%; justify-content: center; }
}

/* Hero */
.category-hero { position: relative; padding: 72px 0 88px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-1.webp'); background-size: cover; background-position: center; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,11,22,0.82) 0%, rgba(6,11,22,0.72) 50%, #060B16 100%); }
.hero-grid-overlay { position: absolute; inset: 0; opacity: .5; background-image: linear-gradient(rgba(0,229,160,0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(0,229,160,0.06) 1px, transparent 1px); background-size: 44px 44px; }
.hero-glow { position: absolute; width: 360px; height: 360px; border-radius: 50%; filter: blur(120px); pointer-events: none; }
.hero-glow.left { left: -120px; top: -80px; background: rgba(0,229,160,0.14); }
.hero-glow.right { right: -100px; bottom: -120px; background: rgba(56,189,248,0.12); }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--text-secondary); margin-bottom: 24px; position: relative; z-index: 2; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .current { color: var(--brand); }
.category-hero h1 { font-size: 40px; line-height: 1.2; font-weight: 900; letter-spacing: -0.02em; position: relative; z-index: 2; }
.hero-sub { margin-top: 18px; font-size: 18px; color: var(--text-secondary); max-width: 620px; position: relative; z-index: 2; }
.hero-actions { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 14px; position: relative; z-index: 2; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; position: relative; z-index: 2; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 500; color: var(--text-secondary); background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.10); padding: 6px 14px; border-radius: 24px; }
.hero-badge svg { color: var(--brand); }
@media (min-width:768px) {
  .category-hero h1 { font-size: 56px; }
  .hero-sub { font-size: 20px; }
}

/* Buttons */
.btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--brand); color: #07121A; font-weight: 700; font-size: 15px; padding: 12px 28px; border-radius: 14px; box-shadow: 0 0 30px rgba(0,229,160,0.30); transition: all .2s ease; }
.btn-primary:hover { background: var(--brand-bright); box-shadow: 0 0 46px rgba(0,229,160,0.50); transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); filter: brightness(.9); }
.btn-primary:focus-visible { outline: 3px solid rgba(0,229,160,0.4); outline-offset: 2px; }
.btn-secondary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.22); color: var(--text-main); font-weight: 600; font-size: 15px; padding: 12px 28px; border-radius: 14px; transition: all .2s; }
.btn-secondary:hover { border-color: rgba(0,229,160,0.60); color: var(--brand); background: rgba(0,229,160,0.06); }
.btn-secondary:active { transform: scale(.98); }
.btn-secondary:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }

/* Eyebrow / Section head */
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--brand); background: rgba(0,229,160,0.08); border: 1px solid rgba(0,229,160,0.25); padding: 5px 14px; border-radius: 24px; }
.section-head h2 { font-size: 30px; font-weight: 800; letter-spacing: -0.01em; margin-top: 14px; line-height: 1.3; }
.section-head p { color: var(--text-secondary); font-size: 15px; margin-top: 10px; max-width: 560px; }
@media (min-width:768px) { .section-head h2 { font-size: 36px; } }

/* Cards */
.glass { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.10); border-radius: var(--radius-lg); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); transition: border-color .3s, box-shadow .3s, transform .3s; }
.glass:hover { border-color: rgba(255,255,255,0.22); box-shadow: 0 0 40px rgba(0,229,160,0.08); transform: translateY(-3px); }
.glass .card-img { overflow: hidden; border-radius: 15px 15px 0 0; }
.glass .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.glass:hover .card-img img { transform: scale(1.03); }
.tag { display: inline-flex; align-items: center; background: rgba(0,229,160,0.12); color: var(--brand); border: 1px solid rgba(0,229,160,0.30); padding: 4px 14px; border-radius: 20px; font-size: 12px; font-weight: 700; letter-spacing: .02em; }
.badge { display: inline-flex; align-items: center; gap: 4px; background: rgba(56,189,248,0.12); color: var(--blue); border: 1px solid rgba(56,189,248,0.28); padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; color: var(--brand); font-size: 14px; font-weight: 700; transition: gap .2s, color .2s; }
.link-arrow:hover { gap: 10px; color: var(--brand-bright); }
.link-arrow:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 4px; }

/* Process section */
.process-section { position: relative; padding: 72px 0; background: var(--bg-soft); overflow: hidden; }
.process-section::before { content: ''; position: absolute; top: -160px; right: -160px; width: 360px; height: 360px; border-radius: 50%; background: rgba(0,229,160,0.06); filter: blur(100px); }
.process-img-wrap { border-radius: var(--radius-xl); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-card); }
.process-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.process-steps { position: relative; padding-left: 20px; }
.process-steps::before { content: ''; position: absolute; left: 28px; top: 24px; bottom: 24px; width: 2px; background: linear-gradient(180deg, rgba(0,229,160,0.5), rgba(56,189,248,0.25), transparent); }
.step-item { display: flex; gap: 18px; padding: 18px 0; position: relative; border-bottom: 1px solid rgba(255,255,255,0.06); }
.step-item:last-child { border-bottom: none; }
.step-num { display: inline-flex; align-items: center; justify-content: center; min-width: 56px; height: 56px; border-radius: 16px; background: rgba(0,229,160,0.10); border: 1px solid rgba(0,229,160,0.35); color: var(--brand); font-family: 'Inter', 'SF Pro Display', sans-serif; font-weight: 800; font-size: 18px; flex-shrink: 0; }
.step-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.step-item p { color: var(--text-secondary); font-size: 14px; }
.tip-box { margin-top: 24px; padding: 18px 20px; background: rgba(245,158,11,0.08); border: 1px solid rgba(245,158,11,0.25); border-radius: var(--radius-md); font-size: 14px; color: var(--text-secondary); display: flex; gap: 10px; align-items: flex-start; }
.tip-box strong { color: var(--amber); font-weight: 700; flex-shrink: 0; }

/* Guide list */
.guide-list-section { padding: 80px 0; }
.guide-list { margin-top: 40px; border-top: 1px solid rgba(255,255,255,0.08); }
.guide-item { display: flex; align-items: center; gap: 20px; padding: 24px 12px; border-bottom: 1px solid rgba(255,255,255,0.08); transition: background .25s, padding-left .25s; }
.guide-item:hover { background: rgba(0,229,160,0.03); padding-left: 24px; }
.guide-tag { flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center; min-width: 64px; padding: 5px 14px; border-radius: 20px; background: rgba(0,229,160,0.10); border: 1px solid rgba(0,229,160,0.25); color: var(--brand); font-size: 13px; font-weight: 700; }
.guide-main { flex: 1; }
.guide-main h3 { font-size: 16px; font-weight: 700; }
.guide-main p { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }
.guide-arrow { flex-shrink: 0; width: 38px; height: 38px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; border: 1px solid rgba(255,255,255,0.12); color: var(--text-secondary); font-size: 16px; transition: all .2s; }
.guide-item:hover .guide-arrow { color: var(--brand); border-color: rgba(0,229,160,0.4); transform: translateX(4px); }
.guide-item:focus-visible { outline: 2px solid var(--brand); outline-offset: -2px; border-radius: 10px; }
@media (max-width: 640px) { .guide-item { flex-direction: column; align-items: flex-start; gap: 10px; } .guide-arrow { display: none; } }

/* FAQ */
.faq-section { padding: 80px 0; background: var(--bg-soft); }
.faq-accordion { display: flex; flex-direction: column; }
.faq-item { border-bottom: 1px solid rgba(255,255,255,0.10); transition: background .3s, border-color .3s; }
.faq-item.active { background: rgba(255,255,255,0.03); border-left: 3px solid var(--brand); border-radius: 12px; }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 18px; text-align: left; font-size: 16px; font-weight: 700; color: var(--text-main); transition: color .25s; }
.faq-question:hover { color: var(--brand); }
.faq-icon { width: 22px; height: 22px; flex-shrink: 0; color: var(--text-secondary); transition: transform .3s, color .3s; }
.faq-item.active .faq-icon { transform: rotate(45deg); color: var(--brand); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 18px 20px; font-size: 14px; color: var(--text-secondary); }
.faq-contact { margin-top: 24px; padding: 20px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.10); border-radius: var(--radius-lg); }

/* CTA */
.cta-section { padding: 80px 0; }
.cta-box { position: relative; border-radius: var(--radius-xl); overflow: hidden; padding: 56px 32px; text-align: center; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.12); box-shadow: 0 24px 80px rgba(0,0,0,0.3); }
.cta-box::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat; opacity: .15; }
.cta-box::after { content: ''; position: absolute; inset: 0; box-shadow: inset 0 0 120px rgba(0,0,0,0.3); }
.cta-inner { position: relative; z-index: 2; }
.cta-box h2 { font-size: 28px; font-weight: 800; }
.cta-box p { color: var(--text-secondary); margin-top: 12px; font-size: 15px; max-width: 520px; margin-left: auto; margin-right: auto; }
.cta-box .btn-primary { margin-top: 28px; }
@media (min-width:768px) { .cta-box h2 { font-size: 36px; } }

/* Footer */
#site-footer { background: var(--bg-dark); border-top: 1px solid rgba(255,255,255,0.10); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 32px; padding-bottom: 40px; }
@media (min-width:768px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width:1024px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; } }
.footer-brand-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; }
.footer-brand-desc { font-size: 14px; color: var(--text-secondary); margin-top: 14px; line-height: 1.7; max-width: 260px; }
.footer-col-title { font-size: 14px; font-weight: 700; color: var(--text-main); margin-bottom: 16px; letter-spacing: .04em; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--text-secondary); font-size: 14px; transition: color .2s, padding-left .2s; }
.footer-links a:hover { color: var(--brand); padding-left: 4px; }
.footer-contact-info { font-size: 14px; color: var(--text-secondary); line-height: 1.9; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 18px 0; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; font-size: 13px; color: var(--text-muted); }

/* Floating CTA */
.floating-cta { position: fixed; right: 24px; bottom: 24px; z-index: 950; }
.float-btn { display: flex; align-items: center; gap: 10px; padding: 12px 20px; border-radius: 50px; background: var(--brand); color: #07121A; font-weight: 700; font-size: 14px; box-shadow: 0 0 30px rgba(0,229,160,0.40); transition: all .25s; animation: floatPulse 2.5s infinite ease-in-out; }
.float-btn:hover { transform: translateY(-3px); box-shadow: 0 0 50px rgba(0,229,160,0.6); }
.float-btn:active { transform: scale(.97); }
.float-btn:focus-visible { outline: 3px solid rgba(0,229,160,0.4); outline-offset: 3px; }
@keyframes floatPulse { 0%,100% { box-shadow: 0 0 24px rgba(0,229,160,0.30); } 50% { box-shadow: 0 0 40px rgba(0,229,160,0.55); } }
.mobile-cta { display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 960; padding: 10px 16px; background: rgba(4,7,13,0.95); backdrop-filter: blur(12px); border-top: 1px solid rgba(255,255,255,0.10); align-items: center; justify-content: space-between; gap: 12px; }
.mobile-cta-text { font-size: 13px; font-weight: 600; color: var(--text-main); line-height: 1.4; }
.mobile-cta-btn { display: inline-flex; align-items: center; gap: 6px; background: var(--brand); color: #07121A; font-size: 14px; font-weight: 800; padding: 10px 22px; border-radius: 12px; box-shadow: 0 0 24px rgba(0,229,160,0.35); transition: background .2s; white-space: nowrap; }
.mobile-cta-btn:hover { background: var(--brand-bright); }
@media (max-width: 768px) { .floating-cta { display: none; } .mobile-cta { display: flex; } body { padding-bottom: 64px; } }

/* Section spacing helpers */
.section-pad { padding: 72px 0; }
@media (min-width:768px) { .section-pad { padding: 96px 0; } }