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

        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background-color: #f8fafc;
            color: #0f172a;
            line-height: 1.5;
        }

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

        .header {
            background-color: #ffffff;
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 50;
            border-bottom: 1px solid #e2e8f0;
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 1rem 0;
        }

        .logo a {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(135deg, #2563eb, #1e40af);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            text-decoration: none;
            letter-spacing: -0.3px;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            align-items: center;
            flex-wrap: wrap;
        }

        .nav-links a {
            text-decoration: none;
            font-weight: 500;
            color: #1e293b;
            transition: color 0.2s;
        }

        .nav-links a:hover {
            color: #2563eb;
        }

        .btn-subscribe {
            background-color: #2563eb;
            color: white !important;
            padding: 0.5rem 1.25rem;
            border-radius: 40px;
            transition: background 0.2s;
        }

        .btn-subscribe:hover {
            background-color: #1d4ed8;
        }

        .page-hero {
            text-align: center;
            padding: 3rem 0 2rem;
        }

        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0f172a, #3b82f6);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            margin-bottom: 1rem;
        }

        .page-hero .lead {
            font-size: 1.25rem;
            color: #334155;
            max-width: 780px;
            margin: 0 auto;
        }

        .section {
            margin: 4rem 0;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            border-left: 5px solid #2563eb;
            padding-left: 1rem;
            margin-bottom: 2rem;
            color: #0f172a;
        }

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

        .info-card {
            background: white;
            border-radius: 1.5rem;
            padding: 1.8rem;
            box-shadow: 0 8px 20px rgba(0,0,0,0.03);
            border: 1px solid #eef2ff;
            transition: all 0.2s;
        }

        .info-card:hover {
            border-color: #cbd5e1;
            box-shadow: 0 12px 24px -12px rgba(0,0,0,0.1);
        }

        .info-card h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .info-card p {
            color: #334155;
            line-height: 1.6;
        }

        .badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-top: 1rem;
        }

        .badge {
            background: #e0f2fe;
            color: #0369a1;
            padding: 0.25rem 1rem;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
        }

        .feature-highlight {
            background: linear-gradient(120deg, #f1f5f9, #ffffff);
            border-radius: 1.8rem;
            padding: 2rem;
            margin-top: 1.5rem;
        }

        .protocol-icons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
            margin: 1.5rem 0;
        }

        .protocol-item {
            background: #ffffffd9;
            backdrop-filter: blur(2px);
            padding: 0.6rem 1.4rem;
            border-radius: 60px;
            font-weight: 600;
            box-shadow: 0 2px 6px rgba(0,0,0,0.05);
            border: 1px solid #e2e8f0;
        }

        .footer {
            border-top: 1px solid #e2e8f0;
            background: #f9fafb;
            padding: 2rem 0;
            margin-top: 3rem;
            text-align: center;
            color: #475569;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
            margin-bottom: 1rem;
        }

        .footer-links a {
            text-decoration: none;
            color: #334155;
        }

        .footer-links a:hover {
            color: #2563eb;
        }

        @media (max-width: 768px) {
            .nav {
                flex-direction: column;
                gap: 1rem;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }
        /* 原有风格基础上的增强样式，适配对比表格与交互细节 */
        .compare-table-wrapper {
            overflow-x: auto;
            margin: 2rem 0;
            border-radius: 1.5rem;
            background: white;
            border: 1px solid #eef2ff;
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        .compare-table th,
        .compare-table td {
            padding: 1rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid #e9eef3;
            vertical-align: top;
        }
        .compare-table th {
            background-color: #f8fafd;
            font-weight: 700;
            color: #0f172a;
            font-size: 1rem;
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .badge-success {
            background: #dcfce7;
            color: #15803d;
        }
        .steps-container {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin: 2rem 0;
            justify-content: space-between;
        }
        .step-item {
            flex: 1;
            min-width: 180px;
            background: white;
            border-radius: 1.5rem;
            padding: 1.5rem 1rem;
            text-align: center;
            border: 1px solid #eef2ff;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -12px rgba(0,0,0,0.1);
            border-color: #cbdff2;
        }
        .step-number {
            width: 44px;
            height: 44px;
            background: #2563eb;
            color: white;
            font-weight: 700;
            font-size: 1.4rem;
            border-radius: 60px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
        }
        .faq-item {
            background: white;
            border-radius: 1.2rem;
            padding: 1.2rem 1.5rem;
            margin-bottom: 1rem;
            border-left: 4px solid #2563eb;
            box-shadow: 0 1px 2px rgba(0,0,0,0.03);
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
            color: #0f172a;
        }
        .faq-answer {
            color: #334155;
            line-height: 1.5;
        }
        .update-tag {
            display: inline-block;
            background: #e2e8f0;
            border-radius: 40px;
            font-size: 0.75rem;
            padding: 0.2rem 0.8rem;
            color: #1e293b;
            margin-left: 1rem;
            vertical-align: middle;
        }
        .insight-badge {
            background: #fef9c3;
            color: #854d0e;
        }
        @media (max-width: 768px) {
            .steps-container {
                flex-direction: column;
            }
            .compare-table th, .compare-table td {
                padding: 0.75rem;
            }
        }