:root {
    --primary-gradient: linear-gradient(135deg, #073090 0%, #022474 100%);
    --primary-color: #073090;
    --primary-dark: #022474;
    --secondary-color: #4CAF50;
    --accent-color: #FF6B35;
    --accent-light: #FF9A76;
    --dark-color: #1a1a2e;
    --light-color: #f8f9ff;
    --gray-color: #666;
    --light-gray: #f5f5f5;
    --border-radius: 12px;
    --shadow: 0 8px 32px rgba(2, 36, 116, 0.15);
    --shadow-hover: 0 15px 45px rgba(2, 36, 116, 0.25);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

body {
    line-height: 1.6;
    color: var(--dark-color);
    background-color: white;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 合规声明栏 */
.compliance-bar {
    background: linear-gradient(135deg, rgba(7, 48, 144, 0.1) 0%, rgba(2, 36, 116, 0.1) 100%);
    padding: 12px 0;
    border-bottom: 1px solid rgba(7, 48, 144, 0.15);
    font-size: 14px;
}

.compliance-content {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 25px;
}

.compliance-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
    font-weight: 500;
}

.compliance-icon {
    width: 24px;
    height: 24px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
}

/* 头部样式 */
header {
    background: white;
    box-shadow: 0 4px 20px rgba(2, 36, 116, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 26px;
    box-shadow: 0 4px 12px rgba(7, 48, 144, 0.25);
}

.logo-text {
    font-size: 26px;
    font-weight: 700;
    color: var(--dark-color);
}

.logo-subtext {
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    font-size: 16px;
    transition: all 0.3s;
    position: relative;
    padding: 8px 0;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--primary-gradient);
    transition: width 0.3s;
    border-radius: 1.5px;
}

.nav-links a:hover::after {
    width: 100%;
}

/* 按钮样式 */
.btn {
    padding: 14px 28px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 16px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 6px 20px rgba(7, 48, 144, 0.25);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(7, 48, 144, 0.35);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: #f0f5ff;
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(7, 48, 116, 0.15);
}

.btn-accent {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.25);
}

.btn-accent:hover {
    background: #FF5722;
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(255, 107, 53, 0.35);
}

/* 英雄区域 */
.hero {
    padding: 100px 0 80px;
    background: linear-gradient(135deg, #f8f9ff 0%, #edf2ff 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: var(--primary-gradient);
    opacity: 0.03;
    border-radius: 50%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 46px;
    margin-bottom: 20px;
    color: var(--dark-color);
    line-height: 1.3;
    font-weight: 700;
}

.hero h1 span {
    color: var(--primary-color);
    position: relative;
}

.hero h1 span::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background-color: rgba(7, 48, 144, 0.15);
    z-index: -1;
    border-radius: 4px;
}

.hero p {
    font-size: 20px;
    color: var(--gray-color);
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 合规认证区 */
.certification {
    padding: 80px 0;
    background: white;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 15px;
    color: var(--dark-color);
    font-weight: 700;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.section-title p {
    color: var(--gray-color);
    max-width: 700px;
    margin: 25px auto 0;
    font-size: 18px;
    line-height: 1.6;
}

.certification-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.cert-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 35px 30px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border: 1px solid #f0f0f0;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.cert-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(7, 48, 144, 0.2);
}

.cert-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    font-size: 36px;
}

.cert-1 .cert-icon {
    background: linear-gradient(135deg, rgba(7, 48, 144, 0.1) 0%, rgba(2, 36, 116, 0.1) 100%);
    color: var(--primary-color);
}

.cert-2 .cert-icon {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(255, 87, 34, 0.1) 100%);
    color: var(--accent-color);
}

.cert-3 .cert-icon {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(56, 142, 60, 0.1) 100%);
    color: var(--secondary-color);
}

.cert-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--dark-color);
    font-weight: 600;
}

.cert-card p {
    color: var(--gray-color);
    margin-bottom: 20px;
}

.cert-number {
    display: inline-block;
    padding: 6px 16px;
    background: #f5f5f5;
    color: var(--gray-color);
    border-radius: 20px;
    font-size: 14px;
    font-family: monospace;
    margin-top: 10px;
}

/* 功能展示区 */
.features {
    padding: 80px 0;
    background: linear-gradient(135deg, #f6fbff 0%, #f0f7ff 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 35px 30px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border: 1px solid #f0f0f0;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(7, 48, 144, 0.2);
}

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    font-size: 32px;
}

.feature-1 .feature-icon {
    background: linear-gradient(135deg, rgba(7, 48, 144, 0.1) 0%, rgba(2, 36, 116, 0.1) 100%);
    color: var(--primary-color);
}

.feature-2 .feature-icon {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(255, 87, 34, 0.1) 100%);
    color: var(--accent-color);
}

.feature-3 .feature-icon {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(56, 142, 60, 0.1) 100%);
    color: var(--secondary-color);
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 18px;
    color: var(--dark-color);
    font-weight: 600;
}

.feature-card p {
    color: var(--gray-color);
    margin-bottom: 20px;
    flex-grow: 1;
    line-height: 1.6;
}

.feature-details {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #f0f0f0;
}

.feature-detail-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 12px;
    color: var(--gray-color);
    font-size: 15px;
}

.feature-detail-item i {
    color: var(--primary-color);
    margin-right: 10px;
    font-style: normal;
    font-weight: bold;
    flex-shrink: 0;
    margin-top: 2px;
}

/* 应用商店状态 */
.store-status {
    padding: 80px 0;
    background: white;
}

.store-container {
    display: flex;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
}

.store-text {
    flex: 1;
    min-width: 300px;
}

.store-text h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: var(--dark-color);
    font-weight: 600;
}

.store-text p {
    color: var(--gray-color);
    margin-bottom: 25px;
    font-size: 16px;
    line-height: 1.6;
}

.store-visual {
    flex: 1;
    min-width: 400px;
    text-align: center;
}

.store-badges {
    display: flex;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.store-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 20px;
    background: #f5f5f5;
    border-radius: var(--border-radius);
    min-width: 200px;
    border: 2px solid transparent;
}

.store-badge.available {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(56, 142, 60, 0.1) 100%);
    border-color: var(--secondary-color);
}

.store-badge.coming {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(255, 87, 34, 0.1) 100%);
    border-color: var(--accent-color);
}

.store-badge i {
    font-size: 24px;
}

.store-badge.available i {
    color: var(--secondary-color);
}

.store-badge.coming i {
    color: var(--accent-color);
}

.store-badge-text h4 {
    font-size: 16px;
    margin-bottom: 5px;
    color: var(--dark-color);
    font-weight: 600;
}

.store-badge-text p {
    font-size: 14px;
    color: var(--gray-color);
    margin: 0;
}

/* 下载引导区 */
.download-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f0f5ff 0%, #e6eeff 100%);
    text-align: center;
}

.download-container {
    max-width: 800px;
    margin: 0 auto;
}

.download-container h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: var(--dark-color);
    font-weight: 700;
}

.download-container p {
    color: var(--gray-color);
    margin-bottom: 40px;
    font-size: 18px;
    line-height: 1.6;
}

.download-options {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.download-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    min-width: 250px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s;
}

.download-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.download-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--dark-color);
    font-weight: 600;
}

.download-card p {
    color: var(--gray-color);
    font-size: 14px;
    margin-bottom: 20px;
}

.qrcode-container {
    display: inline-block;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid #e8e8e8;
}

.qrcode-container img {
    width: 300px;
    height: 300px;
    display: block;
}

.qrcode-container p {
    color: var(--gray-color);
    font-size: 15px;
    margin: 0;
}

/* 安装指南 */
.installation-guide {
    padding: 80px 0;
    background: white;
}

.guide-steps {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 50px;
}

.guide-step {
    flex: 1;
    min-width: 220px;
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 25px;
    position: relative;
    z-index: 2;
    box-shadow: 0 6px 18px rgba(7, 48, 144, 0.2);
}

.guide-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 30px;
    left: 60%;
    width: 80%;
    height: 2px;
    background: #f0f0f0;
    z-index: 1;
}

.step-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.step-desc {
    color: var(--gray-color);
    font-size: 15px;
    line-height: 1.6;
}

/* 合规声明 */
.legal-compliance {
    padding: 70px 0;
    background: linear-gradient(135deg, #f8f9ff 0%, #edf2ff 100%);
}

.legal-content {
    background: white;
    padding: 40px;
    border-radius: var(--border-radius);
    border-left: 8px solid var(--primary-color);
    box-shadow: var(--shadow);
}

.legal-content h3 {
    margin-bottom: 25px;
    color: var(--dark-color);
    font-size: 24px;
    font-weight: 600;
}

.legal-list {
    list-style-type: none;
}

.legal-list li {
    padding: 15px 0;
    border-bottom: 1px solid #f0f0f0;
    color: var(--gray-color);
    display: flex;
    align-items: flex-start;
    font-size: 16px;
    line-height: 1.6;
}

.legal-list li:last-child {
    border-bottom: none;
}

.legal-list li::before {
    content: "•";
    color: var(--primary-color);
    font-weight: bold;
    font-size: 24px;
    margin-right: 15px;
    line-height: 1;
    flex-shrink: 0;
}

/* 页脚 */
footer {
    background: var(--dark-color);
    color: white;
    padding: 60px 0 25px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h4 {
    margin-bottom: 25px;
    font-size: 18px;
    color: white;
    font-weight: 600;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 1.5px;
}

.footer-column p {
    color: #bbb;
    margin-bottom: 20px;
    line-height: 1.8;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: #bbb;
    text-decoration: none;
    transition: color 0.3s;
    font-size: 15px;
}

.footer-links a:hover {
    color: white;
}

.contact-info {
    color: #bbb;
    font-size: 15px;
}

.contact-info div {
    margin-bottom: 12px;
}

.copyright {
    text-align: center;
    padding-top: 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #888;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 18px;
    }

    .nav-links {
        gap: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h1 {
        font-size: 34px;
    }

    .hero p {
        font-size: 18px;
    }

    .section-title h2 {
        font-size: 28px;
    }

    .store-container {
        gap: 40px;
    }

    .guide-step:not(:last-child)::after {
        display: none;
    }

    .guide-step {
        margin-bottom: 30px;
    }

    .download-options {
        flex-direction: column;
        align-items: center;
    }

    .download-card {
        width: 100%;
        max-width: 350px;
    }
}