* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', 'Poppins', sans-serif;
            background: #f5f3f0;
            color: #1f2a3e;
            line-height: 1.5;
            scroll-behavior: smooth;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* 导航栏与首页完全一致 */
        header {
            background: #ffffff;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid #eae6e0;
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 20px 0;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

        .logo-icon {
            font-size: 32px;
            font-weight: 800;
            background: #d64b2c;
            -webkit-background-clip: text;
            background-clip: text;
            color: #d64b2c;
            line-height: 1;
        }

        .logo-text {
            font-weight: 800;
            font-size: 1.7rem;
            color: #2c3e2f;
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            gap: 36px;
            align-items: center;
            flex-wrap: wrap;
        }

        .nav-links a {
            text-decoration: none;
            font-weight: 500;
            color: #4a5b6e;
            transition: 0.2s;
            font-size: 1rem;
            padding-bottom: 4px;
            border-bottom: 2px solid transparent;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: #d64b2c;
            border-bottom-color: #d64b2c;
        }

        .btn-download-nav {
            background: #d64b2c;
            color: white !important;
            padding: 8px 28px;
            border-radius: 40px;
            font-weight: 600;
            border-bottom: none !important;
            box-shadow: 0 2px 8px rgba(214, 75, 44, 0.2);
            text-decoration: none;
            display: inline-block;
        }

        .btn-download-nav:hover {
            background: #b83e22;
            transform: translateY(-1px);
        }

        .page-hero {
            padding: 70px 0 50px;
            text-align: center;
            background: radial-gradient(circle at 50% 30%, rgba(214, 75, 44, 0.04) 0%, transparent 70%);
        }

        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #2c3e2f;
            letter-spacing: -0.5px;
            margin-bottom: 24px;
            line-height: 1.3;
        }

        .page-hero .accent {
            color: #d64b2c;
            border-bottom: 4px solid #f5bc9c;
            display: inline-block;
        }

        .page-hero p {
            font-size: 1.2rem;
            color: #5b6e7c;
            max-width: 720px;
            margin: 0 auto 32px;
        }

        .section {
            padding: 50px 0;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 48px;
            color: #2c3e2f;
            letter-spacing: -0.3px;
            position: relative;
            text-align: center;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: #d64b2c;
            border-radius: 4px;
            margin: 16px auto 0;
        }

        .grid-2col {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .card-white {
            background: #ffffff;
            border-radius: 28px;
            padding: 32px;
            border: 1px solid #efe3d9;
            box-shadow: 0 4px 16px rgba(0,0,0,0.02);
            transition: 0.25s;
        }

        .card-white:hover {
            border-color: #d64b2c;
            box-shadow: 0 16px 28px -12px rgba(214,75,44,0.12);
        }

        .card-white h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #3b5240;
            margin-bottom: 16px;
        }

        .process-flow {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 16px;
            margin: 32px 0;
        }

        .flow-step {
            background: #ffffff;
            border-radius: 60px;
            padding: 12px 28px;
            font-weight: 600;
            color: #d64b2c;
            border: 1px solid #f0e4d8;
            box-shadow: 0 2px 8px rgba(0,0,0,0.02);
        }

        .flow-arrow {
            font-size: 1.4rem;
            color: #d64b2c;
        }

        .code-snippet {
            background: #f5f3f0;
            border-radius: 16px;
            padding: 16px;
            font-family: monospace;
            font-size: 0.9rem;
            overflow-x: auto;
            color: #2c3e2f;
            margin: 12px 0;
        }

        .tip-banner {
            background: #fff7f2;
            border-radius: 32px;
            padding: 40px;
            margin: 50px 0;
            border: 1px solid #ffe0cf;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .btn-outline {
            background: transparent;
            border: 1.5px solid #d64b2c;
            color: #d64b2c;
            padding: 12px 32px;
            border-radius: 48px;
            text-decoration: none;
            font-weight: 600;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline:hover {
            background: rgba(214,75,44,0.08);
            border-color: #b83e22;
        }

        .cta-section {
            background: linear-gradient(105deg, #d64b2c 0%, #b83e22 100%);
            border-radius: 48px;
            padding: 56px 40px;
            margin: 60px 0 50px;
            text-align: center;
            color: white;
            box-shadow: 0 18px 36px rgba(214,75,44,0.3);
        }

        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .btn-cta {
            background: #ffffff;
            color: #d64b2c;
            padding: 16px 48px;
            border-radius: 60px;
            font-weight: 700;
            text-decoration: none;
            font-size: 1.1rem;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.1);
        }

        .btn-cta:hover {
            background: #faeae5;
            transform: scale(1.02);
        }

        .footer {
            background: #1e2a23;
            color: #bfcfc5;
            padding: 48px 0 28px;
            border-top-left-radius: 32px;
            border-top-right-radius: 32px;
        }

        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }

        .footer-col h4 {
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-col a {
            color: #bfcfc5;
            text-decoration: none;
            display: block;
            margin-bottom: 8px;
        }
        .footer-col a:hover {
            color: #ffffff;
        }

        .footer-copyright {
            text-align: center;
            padding-top: 44px;
            font-size: 0.85rem;
            border-top: 1px solid #3e5348;
            margin-top: 28px;
        }

        @media (max-width: 860px) {
            .page-hero h1 {
                font-size: 2.4rem;
            }
            .nav-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-links {
                gap: 22px;
                margin-top: 12px;
            }
        }