/* 基础重置 & 暖色风格（与首页/下载页保持统一） */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background: #faf7f2;
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans', sans-serif;
            color: #2a241e;
            line-height: 1.45;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航 */
        .header {
            background: rgba(255, 248, 240, 0.96);
            backdrop-filter: blur(4px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid #f0e2d4;
        }
        .nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            flex-wrap: wrap;
            gap: 16px;
        }
        .logo a {
            font-size: 1.7rem;
            font-weight: 700;
            background: linear-gradient(135deg, #7a4a28, #c47e5a);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            text-decoration: none;
            letter-spacing: -0.3px;
        }
        .nav-links {
            display: flex;
            gap: 28px;
        }
        .nav-links a {
            text-decoration: none;
            font-weight: 500;
            color: #5a3e2e;
            transition: 0.2s;
        }
        .nav-links a:hover {
            color: #b45f3b;
            transform: translateY(-1px);
        }

        /* Hero 教程区 */
        .hero-tutorial {
            text-align: center;
            padding: 48px 0 32px;
        }
        .hero-tutorial h1 {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(145deg, #3f2a1b, #9b5e3c);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            letter-spacing: -0.5px;
        }
        .hero-tutorial p {
            font-size: 1.2rem;
            color: #6c5340;
            margin-top: 12px;
        }

        /* 创意步骤卡片（五边形灵感） */
        .steps-modern {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            margin: 40px 0 48px;
        }
        .step-card {
            background: #ffffffdb;
            backdrop-filter: blur(2px);
            border-radius: 36px;
            padding: 24px 20px;
            text-align: center;
            flex: 1;
            min-width: 160px;
            border: 1px solid #f3e6dc;
            transition: all 0.2s;
        }
        .step-card:hover {
            transform: translateY(-6px);
            border-color: #dccbbc;
            box-shadow: 0 18px 24px -12px rgba(86, 48, 26, 0.12);
        }
        .step-num {
            width: 48px;
            height: 48px;
            background: #f1e0d2;
            border-radius: 60px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            font-weight: 800;
            color: #9b5e3c;
            margin-bottom: 16px;
        }
        .step-card h3 {
            font-size: 1.4rem;
            margin-bottom: 8px;
            color: #4f3420;
        }
        .step-card p {
            color: #68503b;
            font-size: 0.9rem;
        }

        /* 通用教程区块 */
        .tutorial-section {
            background: #fffcf8;
            border-radius: 48px;
            padding: 32px 32px;
            margin: 40px 0;
            border: 1px solid #f3e6dc;
            transition: 0.1s;
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: #6a432c;
            border-left: 6px solid #cb9a72;
            padding-left: 20px;
            margin-bottom: 24px;
        }
        .code-block {
            background: #2a241e;
            color: #f5e6d9;
            padding: 20px;
            border-radius: 28px;
            font-family: 'Monaco', 'Menlo', monospace;
            font-size: 0.85rem;
            margin: 20px 0;
            overflow-x: auto;
            white-space: pre-wrap;
            word-break: break-word;
        }
        .tip-badge {
            background: #e9d9cc;
            padding: 6px 16px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.8rem;
            display: inline-block;
            margin: 12px 0 6px;
        }
        .grid-2col {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
            margin-top: 20px;
        }
        .info-card {
            background: #ffffffcc;
            border-radius: 28px;
            padding: 20px;
            border: 1px solid #f0e2d4;
        }
        .info-card h4 {
            font-size: 1.25rem;
            color: #8b5a3a;
            margin-bottom: 8px;
        }
        .info-card p {
            color: #6d5a48;
        }

        /* 模拟测速面板，创意教学 */
        .mock-speedtest {
            background: #fff3ea;
            border-radius: 32px;
            padding: 20px;
            margin: 28px 0 12px;
        }
        .mock-node {
            display: flex;
            justify-content: space-between;
            padding: 12px 8px;
            border-bottom: 1px solid #e5d5c6;
            font-weight: 500;
        }
        .mock-ping {
            color: #548c2f;
            font-family: monospace;
        }
        .btn-outline {
            background: transparent;
            border: 1px solid #cb9a72;
            padding: 8px 18px;
            border-radius: 40px;
            font-weight: 600;
            color: #9b5e3c;
            cursor: default;
            display: inline-block;
        }

        /* CTA下载区 */
        .cta-download {
            background: #efe2d6;
            border-radius: 56px;
            padding: 44px 32px;
            text-align: center;
            margin: 48px 0 32px;
        }
        .btn-download {
            background: #f7bc7a;
            border: none;
            padding: 14px 36px;
            font-size: 1.2rem;
            font-weight: 700;
            border-radius: 60px;
            color: #2b1c10;
            display: inline-block;
            text-decoration: none;
            transition: 0.2s;
            margin-top: 16px;
            box-shadow: 0 6px 14px rgba(0,0,0,0.05);
        }
        .btn-download:hover {
            background: #ffcf97;
            transform: scale(1.02);
        }

        /* 页脚 */
        .footer {
            background: #efe2d6;
            padding: 36px 0 28px;
            margin-top: 40px;
            text-align: center;
            border-top: 1px solid #e2cfbf;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 32px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .footer-links a {
            text-decoration: none;
            color: #6e4c32;
            font-weight: 500;
        }
        .footer p {
            color: #755c46;
        }

        @media (max-width: 760px) {
            .container {
                padding: 0 20px;
            }
            .hero-tutorial h1 {
                font-size: 2rem;
            }
            .tutorial-section {
                padding: 24px 20px;
            }
        }