/* roulang page: index */
:root {
            --color-primary: #0E7490;
            --color-primary-hover: #155E75;
            --color-accent: #6366F1;
            --color-bg-light: #F8FAFC;
            --color-bg-white: #FFFFFF;
            --color-bg-dark: #0F172A;
            --color-text-main: #0F172A;
            --color-text-secondary: #475569;
            --color-text-muted: #64748B;
            --color-border-light: rgba(226, 232, 240, 0.85);
            --color-border-dark: rgba(51, 65, 85, 0.65);
            --radius-card: 1rem;
            --radius-input: 9999px;
            --shadow-card: 0 1px 3px 0 rgba(15, 23, 42, 0.04), 0 1px 2px -1px rgba(15, 23, 42, 0.04);
            --shadow-card-hover: 0 12px 24px -4px rgba(14, 116, 144, 0.12), 0 4px 8px -2px rgba(15, 23, 42, 0.06);
        }

        *, *::before, *::after {
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--color-text-main);
            background-color: var(--color-bg-white);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        /* 科技网格背景纹理 */
        .bg-tech-grid-light {
            background-color: #F8FAFC;
            background-image: 
                linear-gradient(to right, rgba(14, 116, 144, 0.05) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(14, 116, 144, 0.05) 1px, transparent 1px);
            background-size: 32px 32px;
        }

        .bg-tech-grid-dark {
            background-color: #0F172A;
            background-image: 
                linear-gradient(to right, rgba(30, 41, 59, 0.6) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(30, 41, 59, 0.6) 1px, transparent 1px);
            background-size: 36px 36px;
        }

        /* 统一容器与章节留白 */
        .site-container {
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .site-container { padding-left: 1.5rem; padding-right: 1.5rem; }
        }
        @media (min-width: 1024px) {
            .site-container { padding-left: 2rem; padding-right: 2rem; }
        }

        .section-block {
            padding-top: 4rem;
            padding-bottom: 4rem;
            position: relative;
        }
        @media (min-width: 768px) {
            .section-block {
                padding-top: 6rem;
                padding-bottom: 6rem;
            }
        }

        /* 卡片与交互状态 */
        .ui-card {
            background: var(--color-bg-white);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .ui-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(14, 116, 144, 0.35);
        }

        .ui-card-dark {
            background: rgba(30, 41, 59, 0.55);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-card);
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
        }
        .ui-card-dark:hover {
            border-color: #0E7490;
            background: rgba(30, 41, 59, 0.85);
        }

        /* 按钮组件体系 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: var(--color-primary);
            color: #FFFFFF;
            font-weight: 600;
            padding: 0.75rem 1.5rem;
            border-radius: 0.75rem;
            transition: all 0.25s ease;
            box-shadow: 0 4px 12px rgba(14, 116, 144, 0.22);
        }
        .btn-primary:hover {
            background-color: var(--color-primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(14, 116, 144, 0.32);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: var(--color-accent);
            color: #FFFFFF;
            font-weight: 600;
            padding: 0.75rem 1.5rem;
            border-radius: 0.75rem;
            transition: all 0.25s ease;
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
        }
        .btn-accent:hover {
            background-color: #4F46E5;
            transform: translateY(-1px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: #FFFFFF;
            color: var(--color-text-main);
            border: 1px solid #CBD5E1;
            font-weight: 600;
            padding: 0.75rem 1.5rem;
            border-radius: 0.75rem;
            transition: all 0.2s ease;
        }
        .btn-outline:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: #F0FDFA;
        }

        /* 搜索框聚焦高亮 */
        .nav-search-wrapper {
            transition: all 0.25s ease;
            border: 1.5px solid #E2E8F0;
        }
        .nav-search-wrapper:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(14, 116, 144, 0.12);
            background-color: #FFFFFF;
        }

        /* 导航链接样式 */
        .nav-link {
            color: #334155;
            font-weight: 500;
            font-size: 0.9375rem;
            padding: 0.4rem 0.65rem;
            border-radius: 0.5rem;
            transition: color 0.2s ease, background-color 0.2s ease;
            white-space: nowrap;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--color-primary);
            background-color: #ECFEFF;
        }

        /* 轮播动画过渡 */
        .hero-slide {
            display: none;
            animation: fadeInSlide 0.45s ease-out forwards;
        }
        .hero-slide.active {
            display: grid;
        }
        @keyframes fadeInSlide {
            from { opacity: 0; transform: translateY(6px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* 数字高光渐变 */
        .metric-number {
            background: linear-gradient(135deg, #FFFFFF 0%, #67E8F9 55%, #A5B4FC 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* 呼吸灯指示器 */
        .pulse-dot {
            box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
            animation: pulseGreen 2s infinite;
        }
        @keyframes pulseGreen {
            0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
            70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
            100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
        }

        /* 响应式微调 */
        @media (max-width: 768px) {
            .hero-title-mobile {
                font-size: 1.875rem !important;
                line-height: 2.35rem !important;
            }
        }