/* roulang page: index */
:root {
            --primary-deep-green: #1E3A2F;
            --accent-warm-gold: #C49A6C;
            --bg-light-green: #E8EFE9;
            --highlight-coral: #C1665B;
            --body-bg: #FBF9F6;
            --card-bg: #FFFFFF;
            --text-dark: #2C2C2C;
            --text-body: #3A3A3A;
            --text-muted: #6B6B6B;
            --text-light: #9B9B9B;
            --border-light: #D1D1D1;
            --border-card: #E5E8E6;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --radius-md: 12px;
            --radius-btn: 8px;
            --transition-base: 0.25s ease;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Inter", "Segoe UI", "Helvetica Neue", sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--body-bg);
            color: var(--text-body);
            line-height: 1.75;
            margin: 0;
            overflow-x: hidden;
            padding-top: 76px;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--primary-deep-green);
            font-weight: 700;
            line-height: 1.3;
        }

        h1 {
            font-size: 2.8rem;
            font-weight: 700;
        }

        h2 {
            font-size: 1.9rem;
            margin-bottom: 2.5rem;
            letter-spacing: 0.5px;
        }

        a {
            color: var(--accent-warm-gold);
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:hover {
            color: #A87D4E;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

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

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

        .container {
            max-width: 1260px;
        }

        /* 导航 */
        .navbar-custom {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--bg-light-green);
            padding: 0.8rem 0;
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1030;
            transition: var(--transition-base);
        }

        .navbar-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary-deep-green) !important;
            letter-spacing: 1px;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
        }

        .navbar-nav .nav-link {
            color: var(--primary-deep-green) !important;
            font-weight: 500;
            margin: 0 0.6rem;
            padding: 0.4rem 0.6rem;
            transition: var(--transition-base);
            position: relative;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--accent-warm-gold) !important;
        }

        .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-warm-gold);
            transition: width var(--transition-base);
        }

        .navbar-nav .nav-link:hover::after {
            width: 100%;
        }

        .navbar-toggler {
            border: none;
            box-shadow: none;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(30, 58, 47, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        @media (max-width: 991.98px) {
            .navbar-brand {
                position: static;
                transform: none;
                margin-right: auto;
            }
            .navbar-collapse {
                background: var(--primary-deep-green);
                margin-top: 0.8rem;
                border-radius: var(--radius-md);
                padding: 1.5rem;
            }
            .navbar-nav .nav-link {
                color: #FFFFFF !important;
                margin: 0.5rem 0;
                font-size: 1.1rem;
            }
            .navbar-nav .nav-link:hover {
                color: var(--accent-warm-gold) !important;
            }
            .navbar-nav .nav-link::after {
                display: none;
            }
        }

        /* 区块通用 */
        .section {
            padding: 5.5rem 0;
        }

        .section-bg-light {
            background-color: #F4F6F5;
        }

        .section-bg-dark {
            background-color: var(--primary-deep-green);
            color: #FFFFFF;
        }

        .section-bg-dark h2,
        .section-bg-dark h3 {
            color: #FFFFFF;
        }

        .section-bg-dark .text-muted-light {
            color: rgba(255, 255, 255, 0.75);
        }

        /* 按钮 */
        .btn-primary-custom {
            background: var(--accent-warm-gold);
            border: none;
            color: #FFFFFF;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 0.8rem 2.2rem;
            transition: var(--transition-base);
            box-shadow: 0 2px 6px rgba(196, 154, 108, 0.25);
        }

        .btn-primary-custom:hover {
            background: #A87D4E;
            color: #FFFFFF;
            box-shadow: 0 4px 12px rgba(168, 125, 78, 0.35);
            transform: translateY(-1px);
        }

        .btn-outline-custom {
            border: 2px solid var(--primary-deep-green);
            color: var(--primary-deep-green);
            background: transparent;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 0.8rem 2.2rem;
            transition: var(--transition-base);
        }

        .btn-outline-custom:hover {
            background: var(--primary-deep-green);
            color: #FFFFFF;
            border-color: var(--primary-deep-green);
        }

        .btn-light-custom {
            background: #FFFFFF;
            color: var(--primary-deep-green);
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 0.8rem 2rem;
            border: none;
            transition: var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .btn-light-custom:hover {
            background: var(--accent-warm-gold);
            color: #FFF;
        }

        /* 卡片系统 */
        .card-custom {
            background: var(--card-bg);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 2rem 1.8rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            height: 100%;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: transparent;
        }

        .card-service {
            display: flex;
            align-items: flex-start;
            gap: 1.2rem;
            padding: 1.8rem;
            border: 1px solid var(--bg-light-green);
        }
        .card-service .icon-circle {
            flex-shrink: 0;
            width: 50px;
            height: 50px;
            background: var(--bg-light-green);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-deep-green);
            font-size: 1.4rem;
        }
        .card-service:hover {
            border-color: var(--accent-warm-gold);
        }

        .card-scenario {
            border: none;
            background: #F8FAF9;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
        }
        .card-scenario:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
        }
        .card-scenario .img-placeholder {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .card-scenario .img-placeholder::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--accent-warm-gold);
        }

        .pricing-card {
            border-radius: var(--radius-md);
            padding: 2.5rem 2rem;
            text-align: center;
            background: #FFFFFF;
            border: 1px solid var(--border-card);
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .pricing-card.featured {
            background: var(--primary-deep-green);
            color: #FFFFFF;
            border: none;
            transform: scale(1.03);
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .pricing-card.featured .badge-recommend {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent-warm-gold);
            color: #fff;
            padding: 0.4rem 1.5rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .pricing-card.featured h3,
        .pricing-card.featured .price {
            color: #FFFFFF;
        }
        .price {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-deep-green);
            margin: 1rem 0;
        }

        /* 数据展示 */
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-warm-gold);
            line-height: 1.2;
        }

        /* FAQ */
        .accordion-custom .accordion-button {
            font-weight: 600;
            color: var(--primary-deep-green);
            background: transparent;
            box-shadow: none;
            border-bottom: 1px solid var(--bg-light-green);
            padding: 1.2rem 0;
            font-size: 1.05rem;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--accent-warm-gold);
            background: transparent;
        }
        .accordion-custom .accordion-button::after {
            transition: transform 0.3s ease;
        }
        .accordion-custom .accordion-body {
            padding: 1rem 0 1.5rem;
            color: var(--text-body);
        }

        /* 表单 */
        .form-control-custom {
            border-radius: var(--radius-btn);
            border: 1px solid var(--border-light);
            padding: 0.8rem 1rem;
            transition: var(--transition-base);
        }
        .form-control-custom:focus {
            border-color: var(--accent-warm-gold);
            box-shadow: 0 0 0 3px rgba(196, 154, 108, 0.15);
            outline: none;
        }

        /* Footer */
        .footer {
            background: #F0EDE8;
            padding: 3.5rem 0 2rem;
            color: var(--text-muted);
        }
        .footer h5 {
            color: var(--primary-deep-green);
            font-weight: 600;
            margin-bottom: 1.2rem;
        }
        .footer a {
            color: var(--text-muted);
            display: block;
            margin-bottom: 0.5rem;
        }
        .footer a:hover {
            color: var(--accent-warm-gold);
        }
        .copyright {
            font-size: 0.9rem;
            color: var(--text-light);
            border-top: 1px solid #DDD9D2;
            padding-top: 1.5rem;
            margin-top: 2rem;
        }

        @media (max-width: 767.98px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .section { padding: 3.5rem 0; }
            .pricing-card.featured { transform: scale(1); }
            .navbar-brand { font-size: 1.1rem; }
        }