/* roulang page: index */
:root {
            --sdp-primary: #0A5C5A;
            --sdp-primary-hover: #074745;
            --sdp-primary-light: #EBF4F3;
            --sdp-accent-green: #00E599;
            --sdp-accent-orange: #FF6B35;
            --sdp-dark: #0D1514;
            --sdp-dark-surface: #152220;
            --sdp-text-main: #111E1D;
            --sdp-text-body: #3A4D4A;
            --sdp-text-muted: #738A87;
            --sdp-bg-light: #F4F7F6;
            --sdp-border: #E2EAE8;
            --sdp-card-radius: 14px;
            --sdp-shadow: 0 8px 24px rgba(10, 92, 90, 0.06);
            --sdp-shadow-hover: 0 16px 36px rgba(10, 92, 90, 0.12);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
            color: var(--sdp-text-body);
            background-color: #FFFFFF;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        /* 顶部政务标准导航栏 */
        .top-info-bar {
            height: 38px;
            background-color: #F8FAF9;
            border-bottom: 1px solid var(--sdp-border);
            font-size: 13px;
            color: var(--sdp-text-muted);
        }
        .top-info-bar a {
            color: var(--sdp-text-muted);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        .top-info-bar a:hover {
            color: var(--sdp-primary);
        }

        .main-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--sdp-border);
            box-shadow: 0 4px 16px rgba(0,0,0,0.03);
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .brand-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--sdp-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            letter-spacing: -0.3px;
        }
        .brand-badge {
            display: inline-block;
            width: 10px;
            height: 10px;
            background-color: var(--sdp-accent-green);
            border-radius: 50%;
            box-shadow: 0 0 0 3px rgba(0, 229, 153, 0.2);
        }
        .nav-link-custom {
            font-size: 15px;
            font-weight: 500;
            color: var(--sdp-text-main);
            padding: 8px 14px;
            transition: all 0.2s ease;
            text-decoration: none;
        }
        .nav-link-custom:hover {
            color: var(--sdp-primary);
        }

        /* 按钮与徽章 */
        .btn-sdp-primary {
            background-color: var(--sdp-primary);
            color: #FFFFFF;
            border: 1px solid var(--sdp-primary);
            font-weight: 600;
            border-radius: 8px;
            padding: 10px 22px;
            transition: all 0.25s cubic-bezier(0.165, 0.84, 0.44, 1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
        }
        .btn-sdp-primary:hover, .btn-sdp-primary:focus {
            background-color: var(--sdp-primary-hover);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(10, 92, 90, 0.25);
        }
        .btn-sdp-outline {
            background-color: transparent;
            color: var(--sdp-primary);
            border: 1px solid var(--sdp-primary);
            font-weight: 600;
            border-radius: 8px;
            padding: 10px 22px;
            transition: all 0.25s ease;
            text-decoration: none;
        }
        .btn-sdp-outline:hover {
            background-color: var(--sdp-primary-light);
            color: var(--sdp-primary);
            transform: translateY(-2px);
        }
        .btn-sdp-accent {
            background-color: var(--sdp-accent-green);
            color: var(--sdp-dark);
            border: none;
            font-weight: 700;
            border-radius: 8px;
            padding: 10px 24px;
            transition: all 0.2s ease;
            text-decoration: none;
        }
        .btn-sdp-accent:hover {
            background-color: #00cca8;
            color: var(--sdp-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 229, 153, 0.3);
        }
        .btn-pill-sm {
            padding: 6px 14px;
            font-size: 13px;
        }

        /* 板块公共排版 */
        .section-py {
            padding-top: 88px;
            padding-bottom: 88px;
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-kicker {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--sdp-primary);
            background: var(--sdp-primary-light);
            display: inline-block;
            padding: 4px 12px;
            border-radius: 30px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--sdp-text-main);
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--sdp-text-muted);
            max-width: 820px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        /* 通用卡片 */
        .sdp-card {
            background: #FFFFFF;
            border: 1px solid var(--sdp-border);
            border-radius: var(--sdp-card-radius);
            box-shadow: var(--sdp-shadow);
            transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
            height: 100%;
        }
        .sdp-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--sdp-shadow-hover);
            border-color: rgba(10, 92, 90, 0.25);
        }

        /* Hero：卡片堆叠首屏 (主卡 + 侧卡交错) */
        .hero-section {
            background: radial-gradient(circle at 80% 20%, rgba(0, 229, 153, 0.08) 0%, rgba(244, 247, 246, 0.6) 60%), #FFFFFF;
            padding-top: 60px;
            padding-bottom: 80px;
            border-bottom: 1px solid var(--sdp-border);
        }
        .hero-stack-container {
            position: relative;
            min-height: 480px;
        }
        .hero-main-card {
            background: #FFFFFF;
            border: 1px solid var(--sdp-border);
            border-radius: 16px;
            box-shadow: 0 16px 40px rgba(10, 92, 90, 0.08);
            overflow: hidden;
            position: relative;
            z-index: 2;
        }
        .hero-side-card-left {
            position: absolute;
            left: -24px;
            top: 40px;
            width: 260px;
            background: #FFFFFF;
            border: 1px solid var(--sdp-border);
            border-radius: 14px;
            padding: 16px;
            box-shadow: 0 12px 30px rgba(0,0,0,0.06);
            z-index: 3;
            animation: floatSlow 5s ease-in-out infinite alternate;
        }
        .hero-side-card-right {
            position: absolute;
            right: -20px;
            bottom: 30px;
            width: 280px;
            background: var(--sdp-dark);
            color: #FFFFFF;
            border-radius: 14px;
            padding: 18px;
            box-shadow: 0 16px 36px rgba(0,0,0,0.25);
            z-index: 3;
            animation: floatSlowRev 6s ease-in-out infinite alternate;
        }
        @keyframes floatSlow {
            0% { transform: translateY(0px); }
            100% { transform: translateY(-10px); }
        }
        @keyframes floatSlowRev {
            0% { transform: translateY(0px); }
            100% { transform: translateY(12px); }
        }

        /* 核心优势卡片索引码 */
        .advantage-card {
            padding: 32px 28px;
            position: relative;
            background: #FFFFFF;
        }
        .advantage-num {
            font-size: 14px;
            font-weight: 800;
            color: var(--sdp-primary);
            background: var(--sdp-primary-light);
            padding: 4px 10px;
            border-radius: 6px;
            display: inline-block;
            margin-bottom: 16px;
        }

        /* 深色区域 */
        .dark-section {
            background-color: var(--sdp-dark);
            color: #E2EAE8;
        }
        .dark-section .section-title {
            color: #FFFFFF;
        }
        .dark-card {
            background-color: var(--sdp-dark-surface);
            border: 1px solid #233734;
            border-radius: 14px;
            padding: 32px;
            color: #C8D6D4;
        }

        /* FAQ 手风琴样式 */
        .accordion-faq .accordion-item {
            background-color: #FFFFFF;
            border: 1px solid var(--sdp-border);
            border-radius: 10px !important;
            margin-bottom: 14px;
            overflow: hidden;
        }
        .accordion-faq .accordion-button {
            font-weight: 600;
            font-size: 16px;
            color: var(--sdp-text-main);
            background: #FDFEFE;
            padding: 18px 24px;
            box-shadow: none !important;
        }
        .accordion-faq .accordion-button:not(.collapsed) {
            color: var(--sdp-primary);
            background: var(--sdp-primary-light);
            border-bottom: 1px solid var(--sdp-border);
        }
        .accordion-faq .accordion-body {
            padding: 20px 24px;
            font-size: 15px;
            line-height: 1.75;
            color: var(--sdp-text-body);
        }

        /* 预约转化区域 */
        .booking-box {
            background: #FFFFFF;
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 20px 48px rgba(10, 92, 90, 0.08);
            border: 1px solid var(--sdp-border);
        }

        /* 页脚规范 */
        .main-footer {
            background-color: var(--sdp-dark);
            color: #8C9F9D;
            font-size: 14px;
            border-top: 1px solid #1E2D2B;
        }
        .main-footer h5 {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .main-footer a {
            color: #8C9F9D;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        .main-footer a:hover {
            color: var(--sdp-accent-green);
        }

        @media (max-width: 991px) {
            .hero-side-card-left, .hero-side-card-right {
                position: static;
                width: 100%;
                margin-top: 16px;
                animation: none;
            }
            .section-py {
                padding-top: 56px;
                padding-bottom: 56px;
            }
            .section-title {
                font-size: 26px;
            }
        }