/* roulang page: index */
:root {
            --primary: #0B1120;
            --primary-deep: #070C16;
            --accent-green: #10B981;
            --accent-cyan: #06B6D4;
            --accent-warning: #F59E0B;
            --bg-light: #F8FAFC;
            --bg-muted: #F1F5F9;
            --text-dark: #0F172A;
            --text-regular: #334155;
            --text-muted: #64748B;
            --border-subtle: #E2E8F0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-light);
            color: var(--text-regular);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        .heading-decoration::after {
            content: '';
            display: block;
            width: 48px;
            height: 4px;
            background: linear-gradient(90deg, #10B981, #06B6D4);
            border-radius: 2px;
            margin-top: 12px;
        }

        .heading-decoration-center::after {
            content: '';
            display: block;
            width: 56px;
            height: 4px;
            background: linear-gradient(90deg, #10B981, #06B6D4);
            border-radius: 2px;
            margin: 12px auto 0;
        }

        .custom-glass {
            background: rgba(11, 17, 32, 0.88);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .card-elevated {
            transition: all 0.28s ease-in-out;
            border: 1px solid rgba(226, 232, 240, 0.8);
        }

        .card-elevated:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 30px -8px rgba(16, 185, 129, 0.12);
            border-color: rgba(16, 185, 129, 0.35);
        }

        .hero-mesh {
            background: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.15) 0%, transparent 40%),
                        radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.12) 0%, transparent 50%),
                        #0B1120;
        }

        /* 优化表单高亮 */
        input:focus, select:focus, textarea:focus {
            outline: none;
            border-color: #10B981;
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
        }