:root {
            --primary: #3B7EDE;
            --primary-light: #EAF2FC;
            --primary-bg: #F5F9FE;
            --dark: #1E2A3A;
            --gray: #5B6B7C;
            --tea: #C89B6D;
            --border: #E6EDF5;
            --bg-page: #F8FAFC;
            --radius-lg: 12px;
            --radius-md: 8px;
            --shadow-sm: 0 2px 12px rgba(30, 42, 58, 0.06);
            --shadow-lg: 0 8px 30px rgba(30, 42, 58, 0.12);
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--bg-page);
            color: var(--dark);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 15px;
        }
        ::placeholder {
            color: #9AA8B7;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-padding-sm {
            padding: 48px 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.2s ease;
        }
        .btn-primary:hover {
            background: #2C6BC7;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(59, 126, 222, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-primary:focus {
            outline: 2px solid rgba(59, 126, 222, 0.4);
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-md);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.2s ease;
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: #2C6BC7;
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-outline:focus {
            outline: 2px solid rgba(59, 126, 222, 0.4);
            outline-offset: 2px;
        }

        .card-hover {
            transition: box-shadow 0.2s ease, transform 0.2s ease;
        }
        .card-hover:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--border);
            background: #fff;
        }
        .badge-tea {
            border-color: var(--tea);
            color: var(--tea);
            background: rgba(200, 155, 109, 0.08);
        }
        .badge-blue {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(59, 126, 222, 0.06);
        }

        .img-zoom {
            overflow: hidden;
        }
        .img-zoom img {
            transition: transform 0.4s ease;
        }
        .img-zoom:hover img {
            transform: scale(1.05);
        }

        .nav-scroll {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            box-shadow: 0 1px 12px rgba(30, 42, 58, 0.06);
        }
        .channel-tabs {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .channel-tabs::-webkit-scrollbar {
            display: none;
        }
        .channel-tab {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--gray);
            background: var(--primary-bg);
            border: 1px solid var(--border);
            white-space: nowrap;
            transition: all 0.2s ease;
        }
        .channel-tab:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(59, 126, 222, 0.3);
        }
        .channel-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .hero-wrapper {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            min-height: 600px;
            display: flex;
            align-items: center;
        }
        .hero-wrapper::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(255, 255, 255, 0.95) 40%, rgba(245, 249, 254, 0.88) 100%);
        }
        .hero-overlay-line1 {
            position: absolute;
            top: 0;
            left: 0;
            width: 240px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--tea));
            border-radius: 0 0 4px 0;
            z-index: 1;
        }
        .hero-overlay-line2 {
            position: absolute;
            bottom: 0;
            right: 0;
            width: 160px;
            height: 3px;
            background: linear-gradient(90deg, var(--tea), transparent);
            border-radius: 4px 0 0 0;
            z-index: 1;
        }

        .data-panel {
            background: #fff;
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }
        .panel-score {
            position: absolute;
            right: 12px;
            bottom: 12px;
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.95);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }
        .data-cell {
            background: var(--primary-bg);
            border-radius: 10px;
            padding: 14px 12px;
            text-align: center;
            transition: background 0.2s ease;
        }
        .data-cell:hover {
            background: var(--primary-light);
        }

        .service-list-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 20px;
            display: flex;
            gap: 16px;
            align-items: center;
            transition: box-shadow 0.2s ease, transform 0.2s ease;
        }
        .service-list-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .stats-band {
            background: var(--primary-light);
            border-radius: 20px;
            padding: 48px 32px;
        }

        .timeline-node {
            position: relative;
        }
        .timeline-node::before {
            content: '';
            position: absolute;
            top: 50%;
            right: -50%;
            width: 100%;
            border-top: 2px dashed #C5D8F0;
            z-index: 0;
        }
        .timeline-node:last-child::before {
            display: none;
        }
        .timeline-node-inner {
            position: relative;
            z-index: 1;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            margin-bottom: 12px;
            transition: border-color 0.2s ease;
        }
        .faq-item.active {
            border-color: var(--primary);
        }
        .faq-question {
            padding: 18px 24px;
            font-size: 17px;
            font-weight: 500;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            color: var(--dark);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--gray);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .form-control {
            width: 100%;
            padding: 12px 14px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-md);
            background: var(--primary-bg);
            font-size: 15px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            color: var(--dark);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(59, 126, 222, 0.15);
        }

        .deco-line {
            background: linear-gradient(90deg, var(--primary), var(--tea));
            height: 2px;
            width: 64px;
            border-radius: 2px;
        }

        .section-heading {
            font-size: 32px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.3;
        }
        .section-desc {
            font-size: 16px;
            color: var(--gray);
            margin-top: 8px;
            max-width: 600px;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: rgba(59, 126, 222, 0.08);
            border: 1px solid rgba(59, 126, 222, 0.2);
            padding: 3px 14px;
            border-radius: 999px;
            margin-bottom: 10px;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
            .hero-wrapper {
                min-height: auto;
                padding: 60px 0 40px;
            }
            .hero-wrapper::before {
                background: rgba(255, 255, 255, 0.93);
            }
            .section-heading {
                font-size: 26px;
            }
        }

        @media (max-width: 480px) {
            .container-custom {
                padding: 0 16px;
            }
            .btn-primary,
            .btn-outline {
                padding: 10px 20px;
                font-size: 14px;
            }
        }