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

body {
    font-family: 'Segoe UI', 'PingFang SC', Roboto, 'Inter', system-ui, -apple-system, sans-serif;
    background: #fbfdff;
    color: #1A2C3E;
    scroll-behavior: smooth;
}

:root {
    --primary-blue: #0A66C2;
    --primary-dark: #0B2B42;
    --accent-orange: #F47C21;
    --gray-light: #F5F7FC;
    --gray-border: #E9EDF2;
    --text-dark: #1A2C3E;
    --text-muted: #5D6F83;
    --code-bg: #1e2a3a;
    --success-green: #27ae60;
}

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

/* 导航栏 */
.navbar {
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(8px);
    box-shadow: 0 1px 0 var(--gray-border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    text-decoration: none;
}
.logo-icon {
    font-size: 28px;
    color: var(--accent-orange);
}
.logo-text {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-blue), #0B2B42);
    -webkit-background-clip: text;
    /*background-clip: text;*/
    color: transparent;
}
.nav-links {
    display: flex;
    gap: 36px;
    font-weight: 500;
}
.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    transition: color 0.2s;
    cursor: pointer;
}
.nav-links a:hover {
    color: var(--accent-orange);
}
.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}
.login-btn {
    background: transparent;
    border: 1px solid var(--primary-blue);
    padding: 8px 20px;
    border-radius: 40px;
    color: var(--primary-blue);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
}
.login-btn:hover {
    background: rgba(10,102,194,0.05);
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}
.nav-btn {
    background: var(--accent-orange);
    border: none;
    padding: 8px 24px;
    border-radius: 40px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}
.nav-btn:hover {
    background: #E05F10;
}
.menu-icon {
    display: none;
    font-size: 26px;
    cursor: pointer;
}
.nav-links a:hover, .nav-links a.active {
    color: var(--accent-orange);
}

/* Hero 区域 */
.hero {
    background: linear-gradient(135deg, #F0F7FF 0%, #FFFFFF 100%);
    padding: 70px 0 80px;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 800 800" opacity="0.1"><path fill="none" stroke="%230A66C2" stroke-width="1.5" d="M0 400 L800 400 M400 0 L400 800 M200 200 L600 600 M600 200 L200 600"/><circle cx="400" cy="400" r="80" stroke="%230A66C2" fill="none"/><circle cx="200" cy="200" r="30" fill="%23F47C21" opacity="0.2"/></svg>');
    background-repeat: repeat;
    background-size: 80px;
    pointer-events: none;
}
.hero-grid {
    display: flex;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}
.hero-left {
    flex: 1.2;
}
.hero-badge {
    background: rgba(244,124,33,0.12);
    color: var(--accent-orange);
    display: inline-block;
    padding: 6px 16px;
    border-radius: 40px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}
.hero-left h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--primary-dark);
}
.hero-desc {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 540px;
}
.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.btn-primary {
    background: var(--accent-orange);
    border: none;
    padding: 12px 32px;
    border-radius: 48px;
    color: white;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(244,124,33,0.3);
}
.btn-outline {
    background: transparent;
    border: 1.5px solid var(--primary-blue);
    padding: 12px 32px;
    border-radius: 48px;
    font-weight: 600;
    color: var(--primary-blue);
    cursor: pointer;
    transition: all 0.2s;
}
.btn-outline:hover {
    background: rgba(10,102,194,0.05);
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}
.hero-right {
    flex: 1;
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(2px);
    border-radius: 36px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 20px 35px -12px rgba(0,0,0,0.1);
    border: 1px solid rgba(10,102,194,0.2);
}
.stats-demo {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}
.stat-card {
    background: white;
    border-radius: 28px;
    padding: 20px;
    flex: 1;
    text-align: center;
    box-shadow: 0 8px 18px rgba(0,0,0,0.03);
}
.stat-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent-orange);
}
.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

/* 通用区块 */
.section {
    padding: 80px 0;
}
.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--primary-dark);
}
.section-sub {
    text-align: center;
    color: var(--text-muted);
    max-width: 720px;
    margin: 0 auto 56px;
    font-size: 18px;
}

/* 功能卡片 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-top: 20px;
}
.feature-card {
    background: white;
    border-radius: 32px;
    padding: 32px 28px;
    transition: all 0.3s ease;
    border: 1px solid var(--gray-border);
    box-shadow: 0 6px 14px rgba(0,0,0,0.02);
    cursor: pointer;
}
.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-orange);
    box-shadow: 0 20px 30px -12px rgba(0,0,0,0.12);
}
.feature-icon {
    font-size: 48px;
    color: var(--accent-orange);
    margin-bottom: 24px;
}
.feature-card h3 {
    font-size: 26px;
    margin-bottom: 16px;
    font-weight: 700;
}
.feature-card p {
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 20px;
}
.feature-tag {
    display: inline-block;
    background: rgba(10,102,194,0.08);
    padding: 6px 14px;
    border-radius: 40px;
    font-size: 13px;
    font-weight: 500;
    color: var(--primary-blue);
}

/* 定制开发 */
.custom-section {
    background: var(--gray-light);
    border-radius: 48px;
    margin: 40px auto;
    padding: 60px 48px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 48px;
}
.custom-left {
    flex: 1;
}
.custom-left h2 {
    font-size: 32px;
    margin-bottom: 20px;
}
.custom-right {
    flex: 1;
    background: #1A2C3E;
    border-radius: 28px;
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background-image: linear-gradient(145deg, #0F2A3E, #08212E);
}
.play-btn {
    width: 80px;
    height: 80px;
    background: rgba(244,124,33,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: white;
}

/* 数据看板 */
.data-show {
    background: white;
    border-radius: 48px;
    border: 1px solid var(--gray-border);
    padding: 48px 32px;
    margin: 40px 0;
    text-align: center;
}
.kpi-group {
    display: flex;
    justify-content: center;
    gap: 56px;
    flex-wrap: wrap;
    margin: 32px 0 20px;
}
.kpi-number {
    font-size: 44px;
    font-weight: 800;
    color: var(--accent-orange);
}

/* 右侧悬浮按钮 */
.social-float {
    position: fixed;
    right: 20px;
    bottom: 30%;
    transform: translateY(-50%);
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.social-item {
    width: 52px;
    height: 52px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 18px rgba(0,0,0,0.12);
    cursor: pointer;
    transition: all 0.25s ease;
    font-size: 28px;
    color: var(--primary-dark);
}
.social-item:hover {
    transform: scale(1.08);
}
.social-item.douyin:hover { background: #000; color: #fff; }
.social-item.wechat:hover { background: #07C160; color: white; }
.social-item.qq:hover { background: #12B7F5; color: white; }
.wechat-tooltip {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: #1e2a3a;
    color: white;
    padding: 8px 16px;
    border-radius: 40px;
    font-size: 13px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: 0.2s;
    pointer-events: none;
}
.social-item.wechat:hover .wechat-tooltip {
    opacity: 1;
    visibility: visible;
}

/* 登录模态框 */
.login-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: 1001;
    justify-content: center;
    align-items: center;
}
.login-modal.show { display: flex; }
.modal-container {
    background: white;
    border-radius: 32px;
    width: 90%;
    max-width: 420px;
    padding: 40px 32px;
    position: relative;
}
.modal-close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 24px;
    cursor: pointer;
}
.modal-container h3 { font-size: 28px; text-align: center; margin-bottom: 28px; }
.input-group { margin-bottom: 20px; }
.input-group input {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--gray-border);
    border-radius: 48px;
    font-size: 15px;
}
.modal-login-btn {
    width: 100%;
    background: var(--accent-orange);
    border: none;
    padding: 14px;
    border-radius: 48px;
    color: white;
    font-weight: 700;
    cursor: pointer;
}


.mobile-nav {
    display: none;
    flex-direction: column;
    background: white;
    padding: 20px;
    gap: 16px;
    border-top: 1px solid var(--gray-border);
}
.mobile-nav.show { display: flex; }
.mobile-nav a { text-decoration: none; color: var(--text-dark); cursor: pointer; }

/* 确保荣誉证书区域在移动端也保持美观 */
@media (max-width: 768px) {
    .section .container [style*="grid-template-columns"] {
        gap: 20px;
    }
    .section .container [style*="border-radius: 24px"] {
        padding: 20px;
    }
}

/* 底部 */
/*.footer {*/
/*    background: var(--primary-dark);*/
/*    color: #EFF3F8;*/
/*    padding: 48px 0 32px;*/
/*    margin-top: 60px;*/
/*}*/
/*.footer-grid {*/
/*    display: grid;*/
/*    grid-template-columns: repeat(auto-fit, minmax(160px,1fr));*/
/*    gap: 40px;*/
/*}*/
/*.footer-col a {*/
/*    display: block;*/
/*    color: #BDCCDB;*/
/*    text-decoration: none;*/
/*    margin-bottom: 12px;*/
/*    font-size: 14px;*/
/*}*/
/*.copyright {*/
/*    text-align: center;*/
/*    border-top: 1px solid #2A4258;*/
/*    padding-top: 28px;*/
/*    margin-top: 40px;*/
/*    font-size: 13px;*/
/*}*/
.footer {
    background: var(--primary-dark);
    color: #EFF3F8;
    padding: 48px 0 32px;
    margin-top: 60px;
}
.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 40px;
    flex: 3;
}
.footer-qrcode {
    flex: 1;
    min-width: 140px;
    text-align: center;
    border-left: 1px solid #2A4258;
    padding-left: 32px;
}
.footer-qrcode .qr-box {
    background: #0B2B42;
    border-radius: 16px;
    padding: 12px;
    display: inline-block;
    margin-bottom: 12px;
}
.footer-qrcode .qr-box img {
    font-size: 80px;
    color: var(--accent-orange);
}
.footer-qrcode p {
    font-size: 13px;
    color: #BDCCDB;
    line-height: 1.5;
}
.footer-qrcode .qr-tip {
    font-size: 12px;
    color: #9AADBE;
    margin-top: 8px;
}
.footer-col h4 {
    margin-bottom: 20px;
    font-size: 18px;
    color: white;
}
.footer-col a {
    display: block;
    color: #BDCCDB;
    text-decoration: none;
    margin-bottom: 12px;
    font-size: 14px;
    cursor: pointer;
}
.footer-col a:hover {
    color: var(--accent-orange);
}
.copyright {
    text-align: center;
    border-top: 1px solid #2A4258;
    padding-top: 28px;
    font-size: 13px;
    color: #9AADBE;
}
.mobile-nav {
    display: none;
    flex-direction: column;
    background: white;
    padding: 20px;
    gap: 16px;
    border-top: 1px solid var(--gray-border);
}
.mobile-nav.show { display: flex; }
.mobile-nav a { text-decoration: none; color: #1A2C3E; }
/* 视频弹窗模态框 */
.video-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.video-modal.active {
    display: flex;
}
.video-container {
    position: relative;
    width: 90%;
    max-width: 1000px;
    background: #000;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0,0,0,0.5);
    animation: slideUp 0.3s ease;
}
@keyframes slideUp {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}
.video-container iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: none;
    display: block;
}
.close-video {
    position: absolute;
    top: -40px;
    right: 0;
    background: rgba(255,255,255,0.2);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    font-size: 20px;
    transition: background 0.2s;
}
.close-video:hover {
    background: rgba(255,255,255,0.4);
}
/* 面包屑 */
.breadcrumb {
    padding: 20px 0;
    font-size: 14px;
    color: var(--text-muted);
}
.breadcrumb a {
    color: var(--primary-blue);
    text-decoration: none;
}
.breadcrumb a:hover {
    color: var(--accent-orange);
}
/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #F0F7FF 0%, #FFFFFF 100%);
    padding: 50px 0 60px;
    text-align: center;
}
.page-header h1 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--primary-dark);
}
.page-header p {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
}
@media (max-width: 900px) {
    .container { padding: 0 24px; }
    .nav-links, .nav-right { display: none; }
    .menu-icon { display: block; }
    .page-header h1 { font-size: 32px; }
    .feature-header h2 { font-size: 18px; }
    .footer-content { flex-direction: column; }
    .footer-qrcode { border-left: none; padding-left: 0; text-align: center; }
    .video-container { width: 95%; }
    .hero-left h1 { font-size: 32px; }
    .section-title { font-size: 28px; }
    .help-header h1 { font-size: 32px; }
    .section-title { font-size: 24px; }
    .api-header h2 { font-size: 18px; }
}

/* 法律声明弹窗样式 */
.legal-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1001;
    justify-content: center;
    align-items: center;
}
.legal-modal.active {
    display: flex;
}
.legal-modal-content {
    background: white;
    border-radius: 24px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px rgba(0,0,0,0.3);
    animation: modalFadeIn 0.3s ease;
}
@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}
.legal-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-border);
    background: var(--gray-light);
    border-radius: 24px 24px 0 0;
}
.legal-modal-header h3 {
    font-size: 20px;
    color: var(--primary-dark);
}
.legal-modal-close {
    font-size: 28px;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.2s;
}
.legal-modal-close:hover {
    color: var(--accent-orange);
}
.legal-modal-body {
    padding: 24px;
    line-height: 1.6;
    color: var(--text-muted);
    font-size: 14px;
}
.legal-modal-body p {
    margin-bottom: 12px;
}
.legal-link {
    cursor: pointer;
}