/* roulang page: index */
:root {
            --primary: #00f0ff;
            --primary-glow: rgba(0, 240, 255, 0.4);
            --secondary: #6366f1;
            --bg-deep: #030712;
            --card-bg: rgba(15, 23, 42, 0.7);
            --border-light: rgba(255, 255, 255, 0.1);
        }
        body {
            background-color: #030712;
            color: #e2e8f0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .glow-btn {
            background: linear-gradient(135deg, #00f0ff 0%, #6366f1 100%);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            transition: all 0.3s ease;
        }
        .glow-btn:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }
        .glass-panel {
            background: rgba(15, 23, 42, 0.65);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .glass-panel-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .glass-panel-hover:hover {
            border-color: rgba(0, 240, 255, 0.3);
            transform: translateY(-3px);
            box-shadow: 0 12px 30px -10px rgba(0, 240, 255, 0.15);
        }
        .code-container {
            background: rgba(3, 7, 18, 0.85);
            border: 1px solid rgba(0, 240, 255, 0.2);
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }
        .text-gradient {
            background: linear-gradient(135deg, #ffffff 0%, #00f0ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-scrolled {
            background: rgba(3, 7, 18, 0.95) !important;
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }

/* roulang page: article */
:root {
            --primary: #00f0ff;
            --primary-glow: rgba(0, 240, 255, 0.4);
            --secondary: #6366f1;
            --bg-deep: #030712;
            --card-bg: rgba(15, 23, 42, 0.7);
            --border-light: rgba(255, 255, 255, 0.1);
        }
        body {
            background-color: #030712;
            color: #e2e8f0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .glow-btn {
            background: linear-gradient(135deg, #00f0ff 0%, #6366f1 100%);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            transition: all 0.3s ease;
        }
        .glow-btn:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }
        .code-container {
            background: rgba(3, 7, 18, 0.85);
            border: 1px solid rgba(0, 240, 255, 0.2);
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }
        .text-gradient {
            background: linear-gradient(135deg, #ffffff 0%, #00f0ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-scrolled {
            background: rgba(3, 7, 18, 0.95) !important;
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }
        .glass-panel {
            background: rgba(15, 23, 42, 0.6);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .article-content {
            font-size: 1.075rem;
            line-height: 1.9;
            color: #cbd5e1;
        }
        .article-content p {
            margin-bottom: 1.6rem;
            letter-spacing: 0.015em;
        }
        .article-content h2 {
            font-size: 1.65rem;
            font-weight: 700;
            color: #ffffff;
            margin-top: 2.8rem;
            margin-bottom: 1.25rem;
            padding-left: 1rem;
            border-left: 4px solid #00f0ff;
            background: linear-gradient(90deg, rgba(0, 240, 255, 0.08) 0%, transparent 100%);
            padding-top: 0.35rem;
            padding-bottom: 0.35rem;
            border-radius: 0 0.5rem 0.5rem 0;
        }
        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: #f1f5f9;
            margin-top: 2.2rem;
            margin-bottom: 1rem;
            padding-left: 0.75rem;
            border-left: 3px solid #6366f1;
        }
        .article-content blockquote {
            margin: 2rem 0;
            padding: 1.25rem 1.75rem;
            background: rgba(15, 23, 42, 0.85);
            border-left: 4px solid #00f0ff;
            border-radius: 0 0.75rem 0.75rem 0;
            color: #94a3b8;
            font-style: italic;
            position: relative;
        }
        .article-content ul, .article-content ol {
            margin-bottom: 1.75rem;
            padding-left: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.6rem;
            list-style-type: square;
            color: #cbd5e1;
        }
        .article-content img {
            border-radius: 1rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            margin: 2rem auto;
            max-width: 100%;
            height: auto;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }

/* roulang page: category1 */
:root {
            --primary: #00f0ff;
            --primary-glow: rgba(0, 240, 255, 0.4);
            --secondary: #6366f1;
            --bg-deep: #030712;
            --card-bg: rgba(15, 23, 42, 0.7);
            --border-light: rgba(255, 255, 255, 0.1);
        }
        body {
            background-color: #030712;
            color: #e2e8f0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .glow-btn {
            background: linear-gradient(135deg, #00f0ff 0%, #6366f1 100%);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            transition: all 0.3s ease;
        }
        .glow-btn:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }
        .code-container {
            background: rgba(3, 7, 18, 0.85);
            border: 1px solid rgba(0, 240, 255, 0.2);
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }
        .text-gradient {
            background: linear-gradient(135deg, #ffffff 0%, #00f0ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-scrolled {
            background: rgba(3, 7, 18, 0.95) !important;
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }

/* roulang page: category2 */
:root {
            --primary: #00f0ff;
            --primary-glow: rgba(0, 240, 255, 0.4);
            --secondary: #6366f1;
            --bg-deep: #030712;
            --card-bg: rgba(15, 23, 42, 0.7);
            --border-light: rgba(255, 255, 255, 0.1);
        }
        body {
            background-color: #030712;
            color: #e2e8f0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .glow-btn {
            background: linear-gradient(135deg, #00f0ff 0%, #6366f1 100%);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            transition: all 0.3s ease;
        }
        .glow-btn:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }
        .text-gradient {
            background: linear-gradient(135deg, #ffffff 0%, #00f0ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-scrolled {
            background: rgba(3, 7, 18, 0.95) !important;
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }
        .sound-wave-bar {
            animation: soundWave 1.2s ease-in-out infinite alternate;
        }
        @keyframes soundWave {
            0% { height: 6px; }
            100% { height: 28px; }
        }

/* roulang page: category3 */
:root {
            --primary: #00f0ff;
            --primary-glow: rgba(0, 240, 255, 0.4);
            --secondary: #6366f1;
            --bg-deep: #030712;
            --card-bg: rgba(15, 23, 42, 0.7);
            --border-light: rgba(255, 255, 255, 0.1);
        }
        body {
            background-color: #030712;
            color: #e2e8f0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .glow-btn {
            background: linear-gradient(135deg, #00f0ff 0%, #6366f1 100%);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            transition: all 0.3s ease;
        }
        .glow-btn:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }
        .code-container {
            background: rgba(3, 7, 18, 0.85);
            border: 1px solid rgba(0, 240, 255, 0.2);
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }
        .text-gradient {
            background: linear-gradient(135deg, #ffffff 0%, #00f0ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-scrolled {
            background: rgba(3, 7, 18, 0.95) !important;
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }
        .glass-card {
            background: rgba(15, 23, 42, 0.65);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .glass-card:hover {
            border-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 10px 30px -10px rgba(0, 240, 255, 0.15);
        }

/* roulang page: category4 */
:root {
            --primary: #00f0ff;
            --primary-glow: rgba(0, 240, 255, 0.4);
            --secondary: #6366f1;
            --bg-deep: #030712;
            --card-bg: rgba(15, 23, 42, 0.7);
            --border-light: rgba(255, 255, 255, 0.1);
        }
        body {
            background-color: #030712;
            color: #e2e8f0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .glow-btn {
            background: linear-gradient(135deg, #00f0ff 0%, #6366f1 100%);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            transition: all 0.3s ease;
        }
        .glow-btn:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }
        .code-container {
            background: rgba(3, 7, 18, 0.85);
            border: 1px solid rgba(0, 240, 255, 0.2);
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }
        .text-gradient {
            background: linear-gradient(135deg, #ffffff 0%, #00f0ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-scrolled {
            background: rgba(3, 7, 18, 0.95) !important;
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }
        /* 视频背景与雷达扫描动效 */
        .radar-scan {
            position: relative;
            overflow: hidden;
        }
        .radar-scan::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.15), transparent);
            animation: radar 3.5s infinite;
        }
        @keyframes radar {
            0% { left: -100%; }
            100% { left: 100%; }
        }
        .glass-card {
            background: rgba(15, 23, 42, 0.65);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.3s ease;
        }
        .glass-card:hover {
            border-color: rgba(0, 240, 255, 0.3);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px -10px rgba(0, 240, 255, 0.15);
        }