:root {
            --bg-dark: #070f1e;
            --bg-card: #0d1b2a;
            --primary: #1e6091;
            --accent: #1883ff;
            --accent-glow: rgba(24, 131, 255, 0.35);
            --text-main: #ffffff;
            --text-muted: #8da9c4;
            --border-subtle: rgba(24, 131, 255, 0.1);
            --border-glow: rgba(24, 131, 255, 0.25);
            --code-bg: #040810;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 28px rgba(24, 131, 255, 0.25);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-fast);
        }
        /* Header 完全复刻首页修改版 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(7, 15, 30, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-smooth);
        }
        header.scrolled {
            background: rgba(7, 15, 30, 0.96);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }
        .nav-container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 16px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .logo svg {
            width: 30px;
            height: 30px;
            fill: none;
            stroke: var(--accent);
            stroke-width: 2.6;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .logo span {
            color: var(--accent);
        }
        nav {
            display: flex;
            gap: 36px;
            align-items: center;
        }
        nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            position: relative;
            padding: 4px 0;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: width var(--transition-smooth);
        }
        nav a:hover,
        nav a.active {
            color: var(--text-main);
        }
        nav a:hover::after,
        nav a.active::after {
            width: 100%;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .btn-login {
            background: var(--accent);
            padding: 10px 26px;
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: var(--transition-smooth);
        }
        .btn-login:hover {
            box-shadow: var(--shadow-glow);
            transform: translateY(-1px);
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-main);
            margin: 6px 0;
            border-radius: 2px;
            transition: var(--transition-smooth);
        }
        /* 教程页面布局 */
        .guide-layout {
            max-width: 1240px;
            margin: 140px auto 100px;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 3fr 1fr;
            gap: 50px;
        }
        .article-body h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
            background: linear-gradient(180deg, #ffffff 0%, #c8ddf8 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .meta-info {
            font-size: 14px;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border-subtle);
            padding-bottom: 20px;
            margin-bottom: 40px;
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }
        .meta-info span strong {
            color: var(--text-main);
        }
        .article-body h2 {
            font-size: 28px;
            font-weight: 700;
            margin: 48px 0 20px;
            padding-bottom: 8px;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 30px 0 15px;
            color: var(--accent);
        }
        .article-body p {
            font-size: 16px;
            color: #d1dbed;
            margin-bottom: 25px;
            text-align: justify;
        }
        .article-body ul, .article-body ol {
            margin-bottom: 25px;
            padding-left: 24px;
            color: #d1dbed;
        }
        .article-body li {
            margin-bottom: 12px;
        }
        .guide-image {
            width: 100%;
            height: auto;
            min-height: 200px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            background: linear-gradient(135deg, rgba(13,27,42,0.6) 0%, rgba(4,8,16,0.8) 100%);
            margin: 30px 0;
            display: block;
            box-shadow: 0 8px 30px rgba(0,0,0,0.3);
            overflow: hidden;
        }
        .guide-image svg {
            width: 100%;
            height: auto;
            display: block;
        }
        .code-block {
            background: var(--code-bg);
            border: 1px solid rgba(24, 131, 255, 0.1);
            border-radius: 8px;
            padding: 20px;
            font-family: "Courier New", Courier, monospace;
            font-size: 14px;
            color: #a2c2e8;
            margin-bottom: 25px;
            overflow-x: auto;
        }
        /* 创意卡片组件 */
        .steps-interactive {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin: 30px 0;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px 18px;
            text-align: center;
            transition: var(--transition-smooth);
        }
        .step-card:hover {
            border-color: var(--accent);
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(24,131,255,0.15);
        }
        .step-card .step-num {
            width: 40px;
            height: 40px;
            background: var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-weight: 800;
            font-size: 18px;
        }
        .step-card h5 {
            font-size: 16px;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
        }
        .tips-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin: 25px 0;
        }
        .tip-box {
            background: rgba(24,131,255,0.05);
            border-left: 4px solid var(--accent);
            padding: 20px;
            border-radius: 0 12px 12px 0;
        }
        .tip-box h6 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--accent);
        }
        .tip-box p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .sidebar-box {
            background: rgba(13, 27, 42, 0.35);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            position: sticky;
            top: 100px;
        }
        .sidebar-box h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .sidebar-box ul {
            list-style: none;
        }
        .sidebar-box li {
            margin-bottom: 14px;
            font-size: 14px;
        }
        .sidebar-box a {
            color: var(--text-muted);
        }
        .sidebar-box a:hover {
            color: var(--accent);
        }
        /* Footer 与首页一致 */
        footer {
            background: #040810;
            padding: 56px 24px 36px;
            border-top: 1px solid rgba(24, 131, 255, 0.06);
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-container {
            max-width: 1240px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            margin-bottom: 40px;
            gap: 40px;
            flex-wrap: wrap;
        }
        .footer-info p {
            margin-top: 10px;
            max-width: 300px;
        }
        .footer-links {
            display: flex;
            gap: 70px;
            flex-wrap: wrap;
        }
        .footer-column h4 {
            color: var(--text-main);
            margin-bottom: 18px;
        }
        .footer-column li {
            margin-bottom: 10px;
        }
        .footer-bottom {
            max-width: 1240px;
            margin: 0 auto;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }
        @media (max-width: 968px) {
            nav, .nav-right { display: none; }
            .menu-toggle { display: block; }
            nav.open, .nav-right.open {
                display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0;
                background: rgba(7,15,30,0.97); padding: 24px; gap: 16px; border-bottom: 1px solid var(--border-subtle); z-index: 999;
            }
            .guide-layout { grid-template-columns: 1fr; gap: 40px; }
            .steps-interactive { grid-template-columns: 1fr 1fr; }
            .tips-grid { grid-template-columns: 1fr; }
            .sidebar-box { position: static; }
            .footer-container { flex-direction: column; }
            .article-body h1 { font-size: 32px; }
        }