* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: #060b18;
            color: #e8edf5;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 0;
            background: rgba(6, 11, 24, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 180, 255, 0.08);
            transition: background 0.3s;
        }
        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: #e8edf5;
        }
        .nav-brand svg {
            flex-shrink: 0;
        }
        .nav-brand .brand-text {
            background: linear-gradient(135deg, #00d4ff, #0066ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-brand .version-tag {
            font-size: 12px;
            font-weight: 400;
            background: rgba(0, 180, 255, 0.15);
            padding: 2px 10px;
            border-radius: 20px;
            color: #00d4ff;
            -webkit-text-fill-color: #00d4ff;
            letter-spacing: 0.3px;
            border: 1px solid rgba(0, 180, 255, 0.2);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: #a8b5d9;
            transition: color 0.25s;
            position: relative;
        }
        .nav-links a:hover {
            color: #00d4ff;
        }
        .nav-links a.active {
            color: #00d4ff;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, #00d4ff, #0066ff);
            border-radius: 2px;
        }
        .nav-cta {
            background: linear-gradient(135deg, #00d4ff, #0066ff);
            padding: 8px 22px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 14px;
            color: #fff !important;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 4px 20px rgba(0, 100, 255, 0.25);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 100, 255, 0.4);
            color: #fff !important;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            background: none;
            border: none;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #e8edf5;
            border-radius: 3px;
            transition: all 0.3s;
        }
        .page-header {
            padding: 140px 0 60px;
            text-align: center;
            position: relative;
        }
        .page-header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 180, 255, 0.12), transparent);
        }
        .page-header h1 {
            font-size: 48px;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #ffffff 40%, #80d4ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }
        .page-header p {
            font-size: 20px;
            color: #8aa0c8;
            max-width: 720px;
            margin: 0 auto;
        }
        .page-header .tech-badge {
            display: inline-block;
            margin-top: 16px;
            background: rgba(0, 180, 255, 0.08);
            border: 1px solid rgba(0, 180, 255, 0.12);
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 14px;
            color: #00d4ff;
            letter-spacing: 0.3px;
        }
        .section {
            padding: 70px 0;
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-header h2 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #ffffff, #80d4ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 17px;
            color: #8aa0c8;
        }
        /* 协议架构创意版块 */
        .architecture-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .arch-layer {
            background: rgba(255, 255, 255, 0.02);
            border-radius: 24px;
            padding: 32px 26px;
            border: 1px solid rgba(255, 255, 255, 0.04);
            position: relative;
            transition: all 0.3s;
        }
        .arch-layer:hover {
            border-color: rgba(0, 180, 255, 0.18);
            transform: translateY(-6px);
            background: rgba(255, 255, 255, 0.04);
            box-shadow: 0 12px 40px rgba(0,0,0,0.3);
        }
        .arch-icon {
            font-size: 34px;
            margin-bottom: 14px;
            display: block;
        }
        .arch-layer h3 {
            font-size: 20px;
            font-weight: 600;
            color: #e8edf5;
            margin-bottom: 8px;
        }
        .arch-layer p {
            font-size: 14px;
            color: #8aa0c8;
            line-height: 1.7;
        }
        .arch-num {
            position: absolute;
            top: 24px;
            right: 24px;
            font-size: 26px;
            font-weight: 700;
            color: rgba(0, 180, 255, 0.2);
        }
        /* 双棘轮时间线 */
        .ratchet-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .ratchet-step {
            background: rgba(255, 255, 255, 0.02);
            border-radius: 16px;
            padding: 22px 18px;
            border-left: 3px solid rgba(0, 180, 255, 0.4);
            transition: background 0.3s;
        }
        .ratchet-step:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .ratchet-step .step-label {
            font-size: 12px;
            font-weight: 700;
            color: #00d4ff;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .ratchet-step h4 {
            font-size: 16px;
            font-weight: 600;
            color: #e8edf5;
            margin: 6px 0 4px;
        }
        .ratchet-step p {
            font-size: 13px;
            color: #8aa0c8;
            line-height: 1.5;
        }
        /* 密钥交换视觉卡片 */
        .key-exchange-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
            max-width: 960px;
            margin: 0 auto;
        }
        .key-card {
            background: rgba(255, 255, 255, 0.02);
            border-radius: 24px;
            padding: 28px 24px;
            border: 1px solid rgba(255, 255, 255, 0.04);
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: border-color 0.3s;
        }
        .key-card:hover {
            border-color: rgba(0, 180, 255, 0.15);
        }
        .key-card .key-icon {
            font-size: 28px;
            flex-shrink: 0;
        }
        .key-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: #e8edf5;
            margin-bottom: 4px;
        }
        .key-card p {
            font-size: 14px;
            color: #8aa0c8;
            line-height: 1.6;
        }
        /* 零知识证明 */
        .zkp-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .zkp-card {
            background: rgba(255, 255, 255, 0.02);
            border-radius: 20px;
            padding: 26px 22px;
            border: 1px solid rgba(255, 255, 255, 0.04);
            transition: transform 0.3s, border-color 0.3s;
        }
        .zkp-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 180, 255, 0.15);
        }
        .zkp-card .zkp-icon {
            font-size: 30px;
            margin-bottom: 10px;
            display: block;
        }
        .zkp-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #e8edf5;
            margin-bottom: 6px;
        }
        .zkp-card p {
            font-size: 14px;
            color: #8aa0c8;
            line-height: 1.6;
        }
        /* 量子安全前瞻 */
        .quantum-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
            max-width: 960px;
            margin: 0 auto;
        }
        .quantum-card {
            background: rgba(255, 255, 255, 0.02);
            border-radius: 24px;
            padding: 28px 24px;
            border: 1px solid rgba(255, 255, 255, 0.04);
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: border-color 0.3s;
        }
        .quantum-card:hover {
            border-color: rgba(0, 180, 255, 0.15);
        }
        .quantum-card .q-icon {
            font-size: 28px;
            flex-shrink: 0;
        }
        .quantum-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: #e8edf5;
            margin-bottom: 4px;
        }
        .quantum-card p {
            font-size: 14px;
            color: #8aa0c8;
            line-height: 1.6;
        }
        /* 审计报告列表 */
        .audit-list {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }
        .audit-item {
            background: rgba(255, 255, 255, 0.02);
            border-radius: 16px;
            padding: 20px 24px;
            border: 1px solid rgba(255, 255, 255, 0.04);
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.3s;
        }
        .audit-item:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .audit-item .audit-title {
            font-weight: 600;
            color: #e8edf5;
            font-size: 15px;
        }
        .audit-item .audit-meta {
            font-size: 13px;
            color: #6a7fa0;
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .audit-item .audit-badge {
            background: rgba(0, 180, 255, 0.08);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 12px;
            color: #00d4ff;
            border: 1px solid rgba(0, 180, 255, 0.06);
        }
        .footer {
            background: rgba(2, 6, 16, 0.9);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 48px 0 32px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            background: linear-gradient(135deg, #00d4ff, #0066ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
        }
        .footer-brand p {
            font-size: 14px;
            color: #6a7fa0;
            max-width: 300px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #e8edf5;
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: #7a90b8;
            transition: color 0.2s;
        }
        .footer-col ul a:hover {
            color: #00d4ff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #5a6a8a;
        }
        .footer-bottom .info-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
        }
        .footer-bottom .info-group span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .footer-bottom .info-group .badge {
            background: rgba(0, 180, 255, 0.08);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 12px;
            color: #00d4ff;
            border: 1px solid rgba(0, 180, 255, 0.06);
        }
        @media (max-width: 1024px) {
            .architecture-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .ratchet-timeline {
                grid-template-columns: repeat(2, 1fr);
            }
            .zkp-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .key-exchange-grid,
            .quantum-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(6, 11, 24, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 24px 30px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
                gap: 18px;
                align-items: flex-start;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-toggle {
                display: flex;
            }
            .page-header {
                padding: 120px 0 40px;
            }
            .page-header h1 {
                font-size: 32px;
            }
            .page-header p {
                font-size: 17px;
            }
            .section {
                padding: 50px 0;
            }
            .architecture-grid,
            .ratchet-timeline,
            .zkp-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .footer-bottom .info-group {
                gap: 10px 20px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .audit-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }