:root {
            --color-tea-500: #A95D3A;
            --color-tea-600: #8F4528;
            --color-tea-700: #6B3420;
            --color-leaf-500: #42783D;
            --color-bg: #FAF7F4;
            --color-surface: #FFFFFF;
            --color-text: #2C2C2C;
            --color-text-light: #6B6B6B;
            --color-border: #E8E0D8;
            --radius: 14px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.08);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: '"PingFang SC"', '"Microsoft YaHei"', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(232, 224, 216, 0.7);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow 0.3s ease;
        }

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

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: #4A4A4A;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .nav-link:hover {
            color: var(--color-tea-600);
            background: rgba(169, 93, 58, 0.08);
        }

        .nav-link.active {
            color: var(--color-tea-600);
            background: rgba(169, 93, 58, 0.12);
            font-weight: 600;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, #A95D3A 0%, #8F4528 100%);
            color: #fff;
            padding: 0.7rem 1.5rem;
            border-radius: 10px;
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 4px 16px rgba(169, 93, 58, 0.3);
            transition: all 0.25s ease;
            border: none;
            line-height: 1.4;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(169, 93, 58, 0.4);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(169, 93, 58, 0.3);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: 1.5px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            padding: 0.65rem 1.4rem;
            border-radius: 10px;
            font-weight: 500;
            font-size: 14px;
            transition: all 0.25s ease;
            background: transparent;
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        .btn-outline-dark {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: 1.5px solid var(--color-tea-500);
            color: var(--color-tea-600);
            padding: 0.65rem 1.4rem;
            border-radius: 10px;
            font-weight: 500;
            font-size: 14px;
            transition: all 0.25s ease;
            background: transparent;
        }

        .btn-outline-dark:hover {
            background: rgba(169, 93, 58, 0.08);
            border-color: var(--color-tea-600);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 640px;
            display: flex;
            align-items: center;
            color: #fff;
            overflow: hidden;
        }

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

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 20, 15, 0.88) 0%, rgba(60, 35, 25, 0.72) 50%, rgba(100, 60, 35, 0.4) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 10;
            padding-top: 4rem;
            padding-bottom: 4rem;
            max-width: 700px;
        }

        .hero-verify-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 16px;
            padding: 1.25rem;
            transition: background 0.3s ease;
        }

        .hero-verify-card:hover {
            background: rgba(255, 255, 255, 0.16);
        }

        .badge-icon {
            width: 44px;
            height: 44px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        /* ===== Section ===== */
        .section {
            padding-top: 4.5rem;
            padding-bottom: 4.5rem;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: #1E1B18;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-light);
            line-height: 1.7;
            max-width: 640px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #F6E9E1;
            color: var(--color-tea-600);
            font-size: 13px;
            font-weight: 600;
            padding: 0.3rem 0.9rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }

        /* ===== Card ===== */
        .card {
            background: var(--color-surface);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(232, 224, 216, 0.6);
            transition: all 0.3s ease;
        }

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

        .card-feature {
            background: var(--color-surface);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(232, 224, 216, 0.5);
            padding: 1.75rem;
            transition: all 0.3s ease;
            height: 100%;
        }

        .card-feature:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(169, 93, 58, 0.2);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            background: #F6E9E1;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-tea-600);
            margin-bottom: 1rem;
        }

        /* ===== Timeline ===== */
        .timeline-item {
            position: relative;
            padding-left: 1.75rem;
            padding-bottom: 1.75rem;
            border-left: 2px solid #E8D5C8;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -8px;
            top: 4px;
            width: 14px;
            height: 14px;
            background: var(--color-tea-500);
            border: 3px solid #fff;
            border-radius: 50%;
            box-shadow: 0 0 0 2px rgba(169, 93, 58, 0.2);
        }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid rgba(232, 224, 216, 0.8);
            border-radius: 12px;
            padding: 1.25rem 1.5rem;
            background: #fff;
            transition: all 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(169, 93, 58, 0.25);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            font-weight: 600;
            font-size: 16px;
            color: #2C2C2C;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            cursor: pointer;
        }

        .faq-answer {
            margin-top: 0.75rem;
            font-size: 14.5px;
            color: var(--color-text-light);
            line-height: 1.75;
        }

        /* ===== News List ===== */
        .news-list-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.9rem 0;
            border-bottom: 1px solid #F0EAE4;
            transition: background 0.2s ease;
            border-radius: 8px;
            padding-left: 0.5rem;
            padding-right: 0.5rem;
        }

        .news-list-item:last-child {
            border-bottom: none;
        }

        .news-list-item:hover {
            background: #FDF8F5;
        }

        .news-title {
            font-size: 15px;
            font-weight: 500;
            color: #2C2C2C;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            transition: color 0.2s ease;
        }

        .news-title:hover {
            color: var(--color-tea-600);
        }

        .news-date {
            font-size: 13px;
            color: #9A9A9A;
            white-space: nowrap;
            margin-left: 1rem;
        }

        .hot-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 12px;
            font-weight: 600;
            background: #F6E9E1;
            color: var(--color-tea-600);
            padding: 0.2rem 0.7rem;
            border-radius: 999px;
        }

        /* ===== Security ===== */
        .security-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem;
            border: 1px solid rgba(232, 224, 216, 0.5);
            text-align: center;
            transition: all 0.3s ease;
            height: 100%;
        }

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

        .security-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 1rem;
            border-radius: 16px;
            background: linear-gradient(135deg, #F6E9E1 0%, #FDF8F5 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--color-tea-600);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #2E1710 0%, #4A2418 60%, #6B3420 100%);
            color: #fff;
            border-radius: 20px;
            padding: 3rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }

        .cta-button {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: #fff;
            color: var(--color-tea-700);
            padding: 0.85rem 2rem;
            border-radius: 12px;
            font-weight: 700;
            font-size: 15px;
            transition: all 0.25s ease;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1E1B18;
            color: #B0A8A0;
            font-size: 14px;
            padding: 3rem 0 1.5rem;
        }

        .footer-links a {
            color: #B0A8A0;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: #fff;
        }

        /* ===== Bottom Fixed CTA ===== */
        .bottom-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-top: 1px solid rgba(232, 224, 216, 0.6);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
            z-index: 90;
            padding: 0.8rem 1.25rem;
            transform: translateY(100%);
            transition: transform 0.4s ease;
        }

        .bottom-cta.visible {
            transform: translateY(0);
        }

        body {
            padding-bottom: 70px;
        }

        /* ===== Mobile Nav ===== */
        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .mobile-menu.open {
            max-height: 300px;
        }

        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(169, 93, 58, 0.4);
            outline-offset: 2px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 768px) {
            .section {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }

            .section-title {
                font-size: 24px;
            }

            .hero-section {
                min-height: 560px;
            }

            .hero-content {
                padding-top: 2.5rem;
                padding-bottom: 2.5rem;
            }

            .news-list-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.25rem;
            }

            .news-date {
                margin-left: 0;
                font-size: 12px;
            }

            .timeline-item {
                padding-left: 1.25rem;
            }
        }

        @media (max-width: 480px) {
            .section-title {
                font-size: 21px;
            }

            .hero-section {
                min-height: 500px;
            }

            .btn-primary,
            .btn-outline {
                padding: 0.6rem 1.2rem;
                font-size: 13px;
            }

            .card-feature {
                padding: 1.25rem;
            }
        }

/* ===== 设计变量 ===== */
        :root {
            --tea-50: #f0f9f4;
            --tea-100: #dcf0e3;
            --tea-200: #bce0cd;
            --tea-300: #8ec9ae;
            --tea-400: #5cac8a;
            --tea-500: #3a916e;
            --tea-600: #2a7457;
            --tea-700: #235d47;
            --tea-800: #1f4b3a;
            --tea-900: #1b3e31;
            --tea-950: #0d2a20;
            --text: #1f2e28;
            --text-muted: #667b71;
            --border: #e2e8e4;
            --bg: #fbfaf7;
            --radius: 1.2rem;
            --shadow-card: 0 4px 24px rgba(13, 42, 32, 0.06);
            --shadow-hover: 0 12px 32px rgba(13, 42, 32, 0.12);
        }

        /* ===== 基础 ===== */
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--tea-900);
        }
        h1 {
            font-size: clamp(1.9rem, 4.2vw, 2.9rem);
        }
        h2 {
            font-size: clamp(1.4rem, 3vw, 2rem);
        }
        h3 {
            font-size: 1.1rem;
        }
        p {
            color: var(--text-muted);
        }

        /* ===== 容器 ===== */
        .container-custom {
            width: 100%;
            max-width: 1220px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(13, 42, 32, 0.04);
            transition: box-shadow .3s;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(13, 42, 32, 0.08);
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 0.95rem;
            border-radius: 0.7rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: color .2s, background .2s;
            position: relative;
        }
        .nav-link:hover {
            color: var(--tea-700);
            background: var(--tea-50);
        }
        .nav-link.active {
            color: var(--tea-700);
            font-weight: 700;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0.95rem;
            right: 0.95rem;
            bottom: 0.1rem;
            height: 2px;
            border-radius: 2px;
            background: var(--tea-600);
        }
        .mobile-menu {
            display: none;
            border-bottom: 1px solid var(--border);
            background: #fff;
            border-radius: 0 0 1rem 1rem;
            padding: 0.25rem 0.5rem 0.75rem;
            box-shadow: 0 16px 32px rgba(13, 42, 32, 0.08);
        }
        .mobile-menu.open {
            display: block;
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.4rem;
            border-radius: 0.85rem;
            font-weight: 600;
            font-size: 0.92rem;
            color: #fff !important;
            background: linear-gradient(135deg, var(--tea-500), var(--tea-700));
            box-shadow: 0 6px 18px rgba(42, 116, 87, 0.28);
            transition: transform .2s, box-shadow .2s, opacity .2s;
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(42, 116, 87, 0.36);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 10px rgba(42, 116, 87, 0.2);
        }
        .btn-play {
            display: inline-flex;
            align-items: center;
            gap: 0.7rem;
            padding: 0.7rem 1.2rem 0.7rem 0.7rem;
            border-radius: 0.85rem;
            font-weight: 600;
            font-size: 0.92rem;
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(8px);
            transition: background .2s, transform .2s;
        }
        .btn-play:hover {
            background: rgba(255, 255, 255, 0.22);
            transform: translateY(-2px);
        }
        .btn-play .fa-play {
            width: 2.1rem;
            height: 2.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            background: #fff;
            color: var(--tea-700);
            font-size: 0.75rem;
            flex-shrink: 0;
        }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.9rem;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: #fff;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(8px);
            margin-bottom: 1.2rem;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--tea-600);
            background: var(--tea-50);
            border: 1px solid var(--tea-100);
            padding: 0.3rem 0.9rem;
            border-radius: 999px;
            margin-bottom: 1rem;
        }
        .section-label-light {
            color: #bce0cd;
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.14);
        }

        /* ===== 卡片 ===== */
        .feature-card {
            border-radius: var(--radius);
            padding: 1.8rem;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: transform .25s, box-shadow .25s;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        .feature-icon {
            width: 3.2rem;
            height: 3.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 1rem;
            background: linear-gradient(135deg, var(--tea-500), var(--tea-700));
            color: #fff;
            font-size: 1.2rem;
            box-shadow: 0 8px 20px rgba(42, 116, 87, 0.22);
            margin-bottom: 1.2rem;
        }

        /* ===== 步骤 ===== */
        .step-card {
            position: relative;
            border-radius: var(--radius);
            padding: 1.7rem 1.5rem;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: transform .25s, box-shadow .25s;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            width: 2.7rem;
            height: 2.7rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--tea-500), var(--tea-700));
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: 0 6px 14px rgba(42, 116, 87, 0.24);
            margin-bottom: 1.1rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            border-top: 1px solid var(--border);
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            background: #fff;
            transition: background .2s;
        }
        .faq-item.open {
            background: #fafdfb;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 1.15rem 0.75rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            text-align: left;
            transition: color .2s;
            gap: 1rem;
        }
        .faq-question:hover {
            color: var(--tea-700);
        }
        .faq-question .icon {
            flex-shrink: 0;
            width: 2rem;
            height: 2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            background: var(--tea-50);
            color: var(--tea-600);
            font-size: 0.85rem;
            transition: transform .3s, background .3s, color .3s;
        }
        .faq-item.open .faq-question .icon {
            transform: rotate(180deg);
            background: var(--tea-600);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 320px;
        }
        .faq-answer p {
            padding: 0 0.75rem 1.1rem;
            color: var(--text-muted);
            font-size: 0.93rem;
            line-height: 1.85;
        }

        /* ===== 表单 ===== */
        .form-input {
            width: 100%;
            padding: 0.7rem 0.95rem;
            border-radius: 0.75rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 0.9rem;
            transition: border-color .2s, background .2s;
        }
        .form-input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .form-input:focus {
            outline: none;
            border-color: var(--tea-300);
            background: rgba(255, 255, 255, 0.15);
            box-shadow: 0 0 0 3px rgba(140, 201, 174, 0.2);
        }
        select.form-input option {
            color: var(--tea-900);
            background: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--tea-950);
            padding: 4rem 0 2.5rem;
            color: #9fb3aa;
        }
        .footer-links a {
            color: #9fb3aa;
            transition: color .2s, padding-left .2s;
            display: inline-block;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 3px;
        }

        /* ===== 浮动底部条 ===== */
        .float-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 55;
            background: rgba(13, 42, 32, 0.94);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 0.8rem 0;
            transform: translateY(0);
            transition: transform .35s ease;
        }
        .float-bar.hidden {
            transform: translateY(110%);
        }

        /* ===== 视频模态框 ===== */
        .video-modal {
            position: fixed;
            inset: 0;
            z-index: 200;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
        }
        .video-modal.open {
            display: flex;
        }
        .video-modal-backdrop {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(6px);
        }
        .video-modal-content {
            position: relative;
            width: 100%;
            max-width: 820px;
            border-radius: 1.2rem;
            overflow: hidden;
            background: #fff;
            box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
            transform: scale(0.96);
            transition: transform .3s;
        }
        .video-modal.open .video-modal-content {
            transform: scale(1);
        }
        .video-modal-close {
            position: absolute;
            top: 1rem;
            right: 1rem;
            z-index: 2;
            width: 2.4rem;
            height: 2.4rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            background: rgba(0, 0, 0, 0.55);
            color: #fff;
            transition: background .2s, transform .2s;
        }
        .video-modal-close:hover {
            background: rgba(0, 0, 0, 0.8);
            transform: rotate(90deg);
        }

        /* ===== Toast ===== */
        .toast-message {
            position: fixed;
            left: 50%;
            bottom: 100px;
            transform: translateX(-50%) translateY(20px);
            z-index: 9999;
            background: var(--tea-800);
            color: #fff;
            padding: 0.7rem 1.5rem;
            border-radius: 999px;
            font-size: 0.85rem;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            opacity: 0;
            transition: opacity .3s, transform .3s;
            pointer-events: none;
            white-space: nowrap;
            max-width: 90vw;
            text-align: center;
        }
        .toast-message.show {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }

        /* ===== 通用工具 ===== */
        .text-muted {
            color: var(--text-muted);
        }
        .section-pad {
            padding: 4.5rem 0;
        }
        @media (min-width: 1024px) {
            .section-pad {
                padding: 5.5rem 0;
            }
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== 响应式细节 ===== */
        @media (max-width: 420px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .btn-primary {
                padding: 0.65rem 1.1rem;
                font-size: 0.85rem;
            }
            .btn-play {
                padding: 0.6rem 1rem 0.6rem 0.6rem;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 520px) {
            .float-bar .float-cta-text {
                display: none;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }