margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', 'Noto Sans', sans-serif;
            background: #fefaf5;
            color: #2c2418;
            line-height: 1.45;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* 导航栏 */
        .header {
            background: rgba(255, 250, 240, 0.92);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid rgba(235, 205, 167, 0.5);
        }
        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0.9rem 0;
        }
        .logo a {
            font-size: 1.7rem;
            font-weight: 800;
            background: linear-gradient(135deg, #e09d5e, #c2742c);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            text-decoration: none;
        }
        .nav-links {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .nav-links a {
            text-decoration: none;
            font-weight: 600;
            color: #7d6444;
            transition: 0.2s;
        }
        .nav-links a:hover { color: #e08e3a; }
        /* 页面头部 */
        .hero-guide {
            text-align: center;
            padding: 2.5rem 0 1rem;
        }
        .hero-guide h1 {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(125deg, #b86f2e, #e7a15f);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            margin-bottom: 0.5rem;
        }
        .hero-guide p {
            font-size: 1.2rem;
            color: #9b7f5c;
            max-width: 720px;
            margin: 0 auto;
        }
        /* 创意步骤卡片 */
        .steps-modern {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin: 2.5rem 0;
            justify-content: center;
        }
        .step-card {
            background: white;
            border-radius: 1.8rem;
            padding: 1.2rem 1rem;
            flex: 1;
            min-width: 180px;
            text-align: center;
            border: 1px solid #ffe5ca;
            box-shadow: 0 6px 12px rgba(0,0,0,0.02);
            transition: 0.2s;
        }
        .step-card:hover { transform: translateY(-4px); border-color: #ffdaad; }
        .step-num {
            width: 36px;
            height: 36px;
            background: #f5cf9b;
            color: #a2692a;
            font-weight: 800;
            border-radius: 60px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 0.8rem;
        }
        .step-card h3 { color: #c28441; margin-bottom: 0.3rem; font-size: 1.2rem; }
        .step-card p { font-size: 0.85rem; color: #8e7656; }
        /* 教程区块通用样式 */
        .tutorial-section {
            background: #fffff7;
            border-radius: 2rem;
            padding: 1.8rem;
            margin: 2rem 0;
            border: 1px solid #ffe5ca;
        }
        .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: #c28441;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .code-block {
            background: #2d241a;
            color: #f2e0cd;
            padding: 1rem;
            border-radius: 1rem;
            font-family: monospace;
            font-size: 0.8rem;
            overflow-x: auto;
            margin: 1rem 0;
        }
        .tip-badge {
            background: #fff0dc;
            color: #d9923a;
            padding: 0.2rem 0.8rem;
            border-radius: 30px;
            font-size: 0.7rem;
            font-weight: 600;
            display: inline-block;
            margin-right: 0.5rem;
        }
        .grid-2col {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        .info-card {
            background: white;
            border-radius: 1.5rem;
            padding: 1.2rem;
            border: 1px solid #ffefdb;
        }
        .info-card h4 { color: #bc7a3c; margin-bottom: 0.5rem; font-size: 1.1rem; }
        /* CTA 下载号召区域 */
        .cta-download {
            background: linear-gradient(125deg, #fff2e2, #ffebd5);
            border-radius: 2rem;
            padding: 2rem;
            text-align: center;
            margin: 2.5rem 0;
            border: 1px solid #ffdfbe;
        }
        .btn-download {
            background: #e6a157;
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            display: inline-block;
            transition: 0.2s;
            box-shadow: 0 4px 12px rgba(200, 110, 30, 0.25);
            margin-top: 1rem;
        }
        .btn-download:hover { background: #ce8742; transform: scale(0.97); }
        /* 页脚 */
        .footer {
            border-top: 1px solid #ffefdb;
            background: #fffaf2;
            padding: 2rem 0;
            margin-top: 1rem;
            text-align: center;
            color: #b48a5a;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
            margin-bottom: 1rem;
        }
        .footer-links a { text-decoration: none; color: #ba8b4a; }
        .footer-links a:hover { color: #d98f3a; }
        @media (max-width: 780px) {
            .hero-guide h1 { font-size: 2rem; }
            .nav { flex-direction: column; gap: 0.8rem; }
            .steps-modern { flex-direction: column; align-items: stretch; }
        }