/* ===== Reset & White Theme ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --bg-body: #ffffff;
            --bg-card: #f8fafc;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border-color: #e2e8f0;
            --accent-blue: #2563eb;
            --accent-light: #dbeafe;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.05), 0 8px 10px -6px rgba(0,0,0,0.02);
            --radius: 12px;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Hero ===== */
        .hero {
            padding: 48px 0 64px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            border-bottom: 1px solid var(--border-color);
        }
        .hero-left {
            flex: 1 1 50%;
        }
        .hero-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-blue);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 16px;
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 12px;
            letter-spacing: -1px;
            color: var(--text-primary);
        }
        .hero h1 .highlight {
            color: var(--accent-blue);
        }
        .hero-sub {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-weight: 400;
        }
        .hero-features {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 32px;
            margin-bottom: 0;
        }
        .hero-features .item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            color: var(--text-secondary);
        }
        .hero-features .item .icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            background: var(--accent-blue);
            color: #fff;
            border-radius: 50%;
            font-size: 12px;
            flex-shrink: 0;
        }
        .hero-right {
            flex: 1 1 40%;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            text-align: center;
        }
        .hero-right .product-icon {
            font-size: 72px;
            margin-bottom: 12px;
            opacity: 0.8;
            display: block;
        }
        .hero-right .model-group {
            display: flex;
            justify-content: center;
            gap: 24px;
            margin: 12px 0 8px;
            flex-wrap: wrap;
        }
        .hero-right .model-tag {
            background: #fff;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
        }
        .hero-right .model-tag.pro {
            border-color: var(--accent-blue);
            background: var(--accent-light);
            color: var(--accent-blue);
        }
        .hero-right .model-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 12px;
        }
        .hero-right .cloud-badges {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }
        .hero-right .cloud-badges span {
            background: #fff;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
        }
        .hero-right .cloud-badges .aws { border-color: #ff9900; color: #232f3e; }
        .hero-right .cloud-badges .tb { border-color: #8a2be2; color: #5a2d82; }
        .hero-right .cloud-badges .ign { border-color: #e04e39; color: #a03a2a; }

        /* ===== Comparison Table ===== */
        .section {
            padding: 64px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .section:last-of-type {
            border-bottom: none;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: -0.3px;
            color: var(--text-primary);
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 17px;
            max-width: 720px;
            margin-bottom: 36px;
        }

        .compare-table-wrapper {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            overflow-x: auto;
            box-shadow: var(--shadow-sm);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }
        .compare-table th {
            padding: 18px 24px;
            text-align: left;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-secondary);
            border-bottom: 2px solid var(--border-color);
            background: #fafcfc;
        }
        .compare-table th:first-child { width: 28%; color: var(--text-primary); }
        .compare-table th:nth-child(2) { width: 36%; }
        .compare-table th:last-child { width: 36%; }
        .compare-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 15px;
            vertical-align: middle;
        }
        .compare-table tr:last-child td { border-bottom: none; }
        .compare-table .tag-reco {
            display: inline-block;
            background: #f1f5f9;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .compare-table .tag-reco.highlight {
            background: var(--accent-light);
            color: var(--accent-blue);
        }
        .compare-table strong { color: var(--text-primary); }

        /* ===== Value + Architecture Block ===== */
        .value-block {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            align-items: center;
        }
        .value-left {
            flex: 1 1 45%;
        }
        .value-left .key-label {
            background: #fef3c7;
            color: #b45309;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
            display: inline-block;
            margin-bottom: 16px;
        }
        .value-left h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .value-left h2 .hl-blue { color: var(--accent-blue); }
        .value-list {
            list-style: none;
            padding: 0;
            margin-bottom: 24px;
        }
        .value-list li {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .value-list li:last-child { border-bottom: none; }
        .value-list .check-icon {
            color: var(--accent-blue);
            font-weight: 700;
            font-size: 20px;
            line-height: 1.3;
        }
        .value-list .desc {
            color: var(--text-secondary);
            font-size: 15px;
        }
        /* 修复标题独立成行的关键样式 */
        .value-list .item-title {
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 2px;
            color: var(--text-primary);
        }
        .value-list .item-content {
            display: flex;
            flex-direction: column;
        }

        .value-right {
            flex: 1 1 45%;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 30px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .value-right h4 {
            text-align: center;
            margin-bottom: 20px;
            font-weight: 600;
            color: var(--text-secondary);
            font-size: 14px;
            letter-spacing: 1px;
        }
        .arch-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .arch-node {
            text-align: center;
            flex: 1;
        }
        .arch-node .box {
            background: #e0e7ff;
            padding: 12px 8px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 600;
            color: #1e40af;
        }
        .arch-node .sub {
            font-size: 11px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .arch-gw {
            text-align: center;
            flex: 1.5;
            background: var(--accent-blue);
            padding: 14px 10px;
            border-radius: 8px;
            color: #fff;
            box-shadow: 0 4px 10px rgba(37,99,235,0.3);
        }
        .arch-gw .title { font-weight: 700; font-size: 16px; }
        .arch-gw .sub { font-size: 11px; opacity: 0.9; }
        .arch-gw .icons {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-top: 6px;
            font-size: 12px;
        }
        .arch-arrow {
            font-size: 24px;
            color: var(--text-muted);
        }
        .arch-cloud {
            text-align: center;
            flex: 1.5;
        }
        .arch-cloud .badge-group {
            display: flex;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .arch-cloud .badge-group span {
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
            background: #e2e8f0;
            color: #1e293b;
        }
        .arch-cloud .badge-group .aws-b { background: #232f3e; color: #ff9900; }
        .arch-cloud .badge-group .tb-b { background: #6b21a5; color: #fff; }
        .arch-cloud .badge-group .ign-b { background: #c2410c; color: #fff; }
        .arch-cloud .sub {
            font-size: 11px;
            color: var(--text-muted);
            margin-top: 6px;
        }
        .arch-footer {
            margin-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-secondary);
            background: #f1f5f9;
            padding: 8px;
            border-radius: 30px;
        }

        /* ===== Advantages Grid ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 992px) { .advantages-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 600px) { .advantages-grid { grid-template-columns: 1fr; } }
        .adv-card {
            background: var(--bg-card);
            padding: 28px 24px;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            transition: border 0.25s, box-shadow 0.25s;
        }
        .adv-card:hover {
            border-color: var(--accent-blue);
            box-shadow: var(--shadow-md);
        }
        .adv-card .icon-large { font-size: 28px; margin-bottom: 10px; display: block; }
        .adv-card h3 { font-size: 18px; margin-bottom: 6px; font-weight: 600; }
        .adv-card p { color: var(--text-secondary); font-size: 14px; margin: 0; }

        /* ===== Spec Tabs ===== */
        .spec-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 28px;
        }
        .spec-tab {
            padding: 8px 22px;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.2s;
        }
        .spec-tab.active {
            background: var(--accent-blue);
            border-color: var(--accent-blue);
            color: #fff;
        }
        .spec-tab:hover { border-color: var(--accent-blue); }
        .spec-content {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 32px;
            border: 1px solid var(--border-color);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px 40px;
        }
        @media (max-width: 600px) {
            .spec-content { grid-template-columns: 1fr; padding: 20px; }
        }
        .spec-item {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 15px;
        }
        .spec-item .s-label { color: var(--text-secondary); }
        .spec-item .s-value { font-weight: 500; text-align: right; color: var(--text-primary); }

        /* ===== Scenarios ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 768px) { .scene-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 480px) { .scene-grid { grid-template-columns: 1fr; } }
        .scene-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 20px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: transform 0.2s;
        }
        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .scene-card .emoji-big { font-size: 40px; display: block; margin-bottom: 10px; }
        .scene-card h4 { font-size: 18px; margin-bottom: 4px; }
        .scene-card p { color: var(--text-secondary); font-size: 14px; margin: 0; }

        /* ===== Responsive ===== */
        @media (max-width: 768px) {
            .hero h1 { font-size: 32px; }
            .hero-sub { font-size: 16px; }
            .compare-table th, .compare-table td { padding: 12px 16px; font-size: 14px; }
            .value-left h2 { font-size: 24px; }
        }