/* ==========================================
   DLSM 外汇平台 - 高端金融大气风格
   主色调：深海皇家蓝 + 贵金属金
   ========================================== */

:root {
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #dbeafe;
    --primary-bg: #eff6ff;
    --gold: #c9a227;
    --gold-light: #fef3c7;
    --text-dark: #0f172a;
    --text-main: #334155;
    --text-muted: #64748b;
    --bg-body: #f8fafc;
    --bg-header: #ffffff;
    --bg-footer: #0f172a;
    --border-color: #e2e8f0;
    --card-bg: #ffffff;
    --gradient-primary: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    --gradient-gold: linear-gradient(135deg, #c9a227 0%, #fbbf24 100%);
    --gradient-hero: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #3b82f6 100%);
    --shadow-sm: 0 1px 3px rgba(15,23,42,.06);
    --shadow-md: 0 4px 16px rgba(30,64,175,.08);
    --shadow-lg: 0 12px 32px rgba(30,64,175,.12);
}

/* ===== 基础重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-main);
    background: var(--bg-body);
}
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== 按钮 ===== */
.btn {
    display: inline-block;
    padding: 10px 26px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: all .3s;
    border: 1px solid transparent;
    white-space: nowrap;
    font-weight: 500;
    letter-spacing: .3px;
}
.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(30,64,175,.25);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(30,64,175,.35);
    color: #fff;
}
.btn-gold {
    background: var(--gradient-gold);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(201,162,39,.3);
}
.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(201,162,39,.4);
    color: #fff;
}
.btn-outline {
    background: #fff;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(30,64,175,.2);
}

/* ===== 顶部导航 ===== */
.site-header {
    background: #fff;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo img { height: 42px; }
.logo-text {
    font-size: 24px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: .5px;
}
.main-nav ul { display: flex; gap: 4px; align-items: center; }
.main-nav li { position: relative; }
.has-sub { position: relative; }
.main-nav > ul > li > a {
    display: block;
    padding: 24px 18px;
    color: var(--text-main);
    font-weight: 500;
    font-size: 15px;
    position: relative;
}
.main-nav > ul > li > a.active,
.main-nav > ul > li > a:hover { color: var(--primary); }
.main-nav > ul > li > a.active::after,
.main-nav > ul > li > a:hover::after {
    content: '';
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--gradient-gold);
    border-radius: 2px;
}

/* 电脑端子菜单：竖列显示 */
.sub-menu {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    min-width: 200px;
    box-shadow: 0 8px 28px rgba(30,64,175,.15);
    border-radius: 0 0 12px 12px;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
    z-index: 1000;
    padding: 10px 0;
    border-top: 3px solid var(--gold);
}
.has-sub:hover .sub-menu { opacity: 1; visibility: visible; }
.sub-menu li { display: block; width: 100%; }
.sub-menu li a {
    display: block;
    padding: 11px 24px;
    color: var(--text-main);
    font-size: 14px;
    transition: all .2s;
    white-space: nowrap;
    border-left: 3px solid transparent;
}
.sub-menu li a:hover {
    background: var(--primary-bg);
    color: var(--primary);
    border-left-color: var(--gold);
    padding-left: 28px;
}

.header-actions { display: flex; gap: 10px; }
.header-qq {
    background: var(--primary-bg);
    text-align: center;
    padding: 6px 0;
    font-size: 13px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
}
.copy-qq {
    color: var(--primary);
    cursor: pointer;
    padding: 2px 8px;
    border-radius: 4px;
    transition: all .2s;
    font-weight: 500;
}
.copy-qq:hover { background: #fff; box-shadow: 0 2px 8px rgba(30,64,175,.15); }
.mobile-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.mobile-toggle span { width: 24px; height: 2px; background: var(--text-dark); display: block; }

/* ===== 页面主体 ===== */
.page-banner {
    background: var(--gradient-hero);
    padding: 70px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: -50%; right: -10%;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(201,162,39,.15) 0%, transparent 70%);
    border-radius: 50%;
}
.page-banner::after {
    content: '';
    position: absolute;
    bottom: -60%; left: -10%;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,.08) 0%, transparent 70%);
    border-radius: 50%;
}
.page-banner h1 {
    font-size: 34px;
    color: #fff;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
    font-weight: 700;
    letter-spacing: .5px;
}
.page-banner p {
    color: rgba(255,255,255,.85);
    font-size: 16px;
    position: relative;
    z-index: 1;
}

.section { padding: 60px 0; }
.section-title { text-align: center; margin-bottom: 44px; }
.section-title h2 {
    font-size: 28px;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-weight: 700;
    position: relative;
    display: inline-block;
    padding-bottom: 14px;
}
.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-gold);
    border-radius: 2px;
}
.section-title p { color: var(--text-muted); font-size: 15px; }

/* ===== 卡片网格 ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.card {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 30px 26px;
    box-shadow: var(--shadow-sm);
    transition: all .35s cubic-bezier(.4,0,.2,1);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}
.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .35s;
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.card:hover::before { transform: scaleX(1); }
.card h3 { font-size: 18px; color: var(--text-dark); margin-bottom: 12px; font-weight: 700; }
.card p { color: var(--text-muted); font-size: 14px; line-height: 1.75; }

/* 卡片图标：彩色渐变圆形 */
.card-icon {
    width: 56px; height: 56px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin-bottom: 18px;
    box-shadow: 0 6px 16px rgba(30,64,175,.25);
    position: relative;
}
.card-icon::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px dashed rgba(30,64,175,.15);
}

/* ===== 办公地点卡片 ===== */
.office-card { text-align: center; padding: 28px 16px; }
.office-card .flag {
    font-size: 44px;
    margin-bottom: 12px;
    display: inline-block;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,.1));
}
.office-card h4 { font-size: 16px; color: var(--text-dark); margin-bottom: 6px; font-weight: 700; }
.office-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== 数据卡片 ===== */
.stat-card { text-align: center; }
.stat-card .stat-num {
    font-size: 40px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    letter-spacing: -.5px;
}
.stat-card p { color: var(--text-muted); font-size: 14px; }

/* ===== 文章列表 ===== */
.article-item {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all .3s;
    border-left: 3px solid transparent;
}
.article-item:hover {
    box-shadow: var(--shadow-md);
    border-left-color: var(--gold);
    transform: translateX(4px);
}
.article-item h3 { font-size: 17px; margin-bottom: 10px; font-weight: 700; }
.article-item h3 a { color: var(--text-dark); }
.article-item h3 a:hover { color: var(--primary); }
.article-item .meta { font-size: 13px; color: var(--text-muted); margin-bottom: 10px; }
.article-item .desc { color: var(--text-muted); font-size: 14px; }

/* ===== 文章详情 ===== */
.article-detail {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 40px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}
.article-detail h1 { font-size: 26px; margin-bottom: 14px; color: var(--text-dark); font-weight: 700; }
.article-detail h2 { color: var(--text-dark); font-weight: 700; }
.article-detail .meta {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 24px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border-color);
}
.article-content {
    line-height: 2;
    color: var(--text-main);
    font-size: 15px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}
.article-content p { margin-bottom: 16px; }
.article-content img { border-radius: 8px; margin: 18px 0; box-shadow: var(--shadow-md); }
.article-content ul, .article-content ol { padding-left: 22px; margin-bottom: 16px; }
.article-content li { margin-bottom: 6px; }
.article-content strong { color: var(--text-dark); font-weight: 700; }

/* ===== FAQ ===== */
.faq-item {
    background: #fff;
    border-radius: 10px;
    padding: 22px 26px;
    margin-bottom: 14px;
    border: 1px solid var(--border-color);
    transition: all .3s;
    border-left: 3px solid var(--primary-light);
}
.faq-item:hover {
    box-shadow: var(--shadow-md);
    border-left-color: var(--primary);
}
.faq-item h4 {
    font-size: 16px;
    color: var(--text-dark);
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-weight: 700;
}
.faq-item h4::before {
    content: 'Q';
    background: var(--gradient-primary);
    color: #fff;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
    box-shadow: 0 3px 8px rgba(30,64,175,.25);
}
.faq-item p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
    padding-left: 36px;
}

/* ===== 规格表 ===== */
.spec-table {
    width: 100%;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}
.spec-table td {
    padding: 14px 20px;
    font-size: 14px;
    border-bottom: 1px solid var(--border-color);
}
.spec-table tr:last-child td { border-bottom: none; }
.spec-table td:first-child {
    background: var(--primary-bg);
    color: var(--text-dark);
    font-weight: 600;
    width: 200px;
    border-right: 2px solid var(--primary-light);
}

/* ===== 底部 ===== */
.site-footer {
    background: var(--bg-footer);
    padding: 60px 0 0;
    margin-top: 60px;
    color: #cbd5e1;
}
.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-col h4 {
    font-size: 17px;
    color: #fff;
    margin-bottom: 20px;
    font-weight: 700;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 30px;
    height: 3px;
    background: var(--gradient-gold);
    border-radius: 2px;
}
.footer-col p {
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.9;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
    color: #94a3b8;
    font-size: 14px;
    transition: all .2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.footer-col ul li a::before {
    content: '›';
    color: var(--gold);
    font-weight: 700;
    font-size: 16px;
}
.footer-col ul li a:hover { color: var(--gold); padding-left: 4px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08);
    padding: 22px 0;
    text-align: center;
    font-size: 13px;
    color: #64748b;
}
.footer-bottom a { color: #64748b; }
.footer-bottom a:hover { color: var(--gold); }

/* ===== 手机端底部固定栏 ===== */
.mobile-bottom-bar {
    display: none;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: #fff;
    box-shadow: 0 -4px 20px rgba(0,0,0,.1);
    z-index: 1001;
    padding: 10px 12px;
    gap: 10px;
}
.mobile-btn {
    flex: 1;
    text-align: center;
    padding: 12px 0;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
}
.mobile-btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(30,64,175,.3);
}
.mobile-btn-outline {
    background: #fff;
    color: var(--primary);
    border: 2px solid var(--primary);
}

/* ===== 分页 ===== */
.pagination { text-align: center; margin-top: 30px; }
.pagination a, .pagination span {
    display: inline-block;
    padding: 9px 15px;
    margin: 0 4px;
    border-radius: 8px;
    font-size: 14px;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    background: #fff;
    transition: all .2s;
}
.pagination a:hover {
    border-color: var(--primary);
    color: #fff;
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30,64,175,.25);
}
.pagination .current {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(30,64,175,.25);
}

/* ===== 高亮小节 ===== */
.highlight-bar {
    background: var(--gradient-primary);
    color: #fff;
    padding: 20px 26px;
    border-radius: 12px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-md);
}
.highlight-bar .hb-icon {
    width: 48px; height: 48px;
    background: rgba(255,255,255,.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}
.highlight-bar h3 { font-size: 17px; margin-bottom: 4px; font-weight: 700; }
.highlight-bar p { font-size: 13px; color: rgba(255,255,255,.85); }

/* ===== 响应式 (手机端适配) ===== */
@media (max-width: 768px) {
    .header-inner { height: 60px; }
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: #fff;
        box-shadow: 0 4px 12px rgba(0,0,0,.1);
        z-index: 999;
        max-height: 80vh;
        overflow-y: auto;
    }
    .main-nav.open { display: block; }
    .main-nav ul { flex-direction: column; gap: 0; }
    .main-nav > ul > li > a {
        padding: 14px 20px;
        border-bottom: 1px solid var(--border-color);
    }
    .main-nav > ul > li > a.active::after,
    .main-nav > ul > li > a:hover::after { display: none; }
    .sub-menu {
        position: static;
        box-shadow: none;
        display: block !important;
        padding: 0 0 0 20px;
        background: var(--primary-bg);
        opacity: 1;
        visibility: visible;
        transition: none;
        border-radius: 0;
        border-top: none;
    }
    .sub-menu li a { padding: 10px 20px; border-bottom: 1px dashed var(--border-color); }
    .sub-menu li a:hover { padding-left: 20px; }
    .header-actions { display: none; }
    .mobile-toggle { display: flex; }
    .header-qq { font-size: 12px; padding: 6px 0; }
    .mobile-bottom-bar { display: flex; }
    body { padding-bottom: 64px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 24px; }
    .article-detail { padding: 22px; }
    .page-banner { padding: 40px 0; }
    .page-banner h1 { font-size: 24px; }
    .section { padding: 40px 0; }
    .section-title h2 { font-size: 22px; }
    .spec-table td:first-child { width: 120px; padding: 10px 12px; font-size: 13px; }
    .spec-table td { padding: 10px 12px; font-size: 13px; }
    .card { padding: 24px 20px; }
    .card-icon { width: 48px; height: 48px; font-size: 22px; }
}
/* ==========================================
   首页专用 - 大气视觉增强样式
   ========================================== */

/* ===== Hero 区增强 ===== */
.hero-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 40%, #1e40af 70%, #3b82f6 100%);
    padding: 100px 0 120px;
    position: relative;
    overflow: hidden;
    color: #fff;
}
.hero-section::before {
    content: '';
    position: absolute;
    top: -30%; right: -15%;
    width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(201,162,39,.25) 0%, transparent 65%);
    border-radius: 50%;
    animation: floatSlow 8s ease-in-out infinite;
}
.hero-section::after {
    content: '';
    position: absolute;
    bottom: -40%; left: -10%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(59,130,246,.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: floatSlow 10s ease-in-out infinite reverse;
}
@keyframes floatSlow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.08); }
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: .6;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(201,162,39,.15);
    border: 1px solid rgba(201,162,39,.4);
    border-radius: 50px;
    color: #fbbf24;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .5px;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}
.hero-badge .dot {
    width: 8px; height: 8px;
    background: #fbbf24;
    border-radius: 50%;
    box-shadow: 0 0 12px #fbbf24;
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: .5; transform: scale(1.3); }
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -.5px;
}
.hero-title .gradient-gold {
    background: linear-gradient(135deg, #c9a227 0%, #fbbf24 50%, #fde68a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: 18px;
    color: rgba(255,255,255,.8);
    margin-bottom: 40px;
    line-height: 1.8;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}
.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 50px;
}
.hero-buttons .btn {
    padding: 16px 40px;
    font-size: 16px;
    font-weight: 600;
}
.hero-buttons .btn-hero-outline {
    background: rgba(255,255,255,.08);
    color: #fff;
    border: 1.5px solid rgba(255,255,255,.3);
    backdrop-filter: blur(10px);
}
.hero-buttons .btn-hero-outline:hover {
    background: rgba(255,255,255,.18);
    border-color: rgba(255,255,255,.5);
    color: #fff;
    transform: translateY(-3px);
}

/* Hero 数据条 */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}
.hero-stat {
    text-align: center;
    padding: 20px 10px;
    border-right: 1px solid rgba(255,255,255,.1);
}
.hero-stat:last-child { border-right: none; }
.hero-stat .num {
    font-size: 34px;
    font-weight: 800;
    background: linear-gradient(135deg, #fff 0%, #fbbf24 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: 6px;
}
.hero-stat .label {
    font-size: 13px;
    color: rgba(255,255,255,.7);
    letter-spacing: .5px;
}

/* ===== 信任条 ===== */
.trust-bar {
    background: #fff;
    padding: 24px 0;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 12px rgba(15,23,42,.04);
}
.trust-inner {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}
.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-main);
    font-size: 14px;
    font-weight: 500;
}
.trust-item .ti-icon {
    width: 36px;
    height: 36px;
    background: var(--primary-bg);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

/* ===== 产品大卡片（首页产品区） ===== */
.product-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-card-lg {
    background: #fff;
    border-radius: 16px;
    padding: 34px 30px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: all .4s cubic-bezier(.4,0,.2,1);
    position: relative;
    overflow: hidden;
}
.product-card-lg::after {
    content: '';
    position: absolute;
    bottom: -50%;
    right: -50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(30,64,175,.08) 0%, transparent 70%);
    border-radius: 50%;
    transition: all .4s;
}
.product-card-lg:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.product-card-lg:hover::after {
    bottom: -30%;
    right: -30%;
    background: radial-gradient(circle, rgba(201,162,39,.15) 0%, transparent 70%);
}
.product-card-lg .pc-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin-bottom: 20px;
    box-shadow: 0 8px 20px rgba(30,64,175,.3);
    position: relative;
    z-index: 1;
}
.product-card-lg h3 {
    font-size: 20px;
    color: var(--text-dark);
    margin-bottom: 12px;
    font-weight: 700;
    position: relative;
    z-index: 1;
}
.product-card-lg p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 18px;
    position: relative;
    z-index: 1;
}
.product-card-lg .pc-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    position: relative;
    z-index: 1;
    transition: all .3s;
}
.product-card-lg .pc-link:hover { gap: 10px; color: var(--gold); }

/* ===== 数字动画卡片 ===== */
.stat-big {
    text-align: center;
    padding: 36px 20px;
    background: #fff;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    transition: all .35s;
}
.stat-big::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 4px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .4s;
}
.stat-big:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.stat-big:hover::before { transform: scaleX(1); }
.stat-big .stat-num {
    font-size: 44px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: 8px;
    letter-spacing: -1px;
}
.stat-big .stat-label {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

/* ===== 优势区块 2列布局 ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.advantage-item {
    display: flex;
    gap: 20px;
    padding: 28px;
    background: #fff;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: all .35s;
    position: relative;
}
.advantage-item::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background: var(--gradient-primary);
    border-radius: 14px 0 0 14px;
    transform: scaleY(0);
    transform-origin: top;
    transition: transform .35s;
}
.advantage-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.advantage-item:hover::before { transform: scaleY(1); }
.advantage-item .ai-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    box-shadow: 0 6px 16px rgba(30,64,175,.25);
}
.advantage-item h3 {
    font-size: 17px;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-weight: 700;
}
.advantage-item p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
}

/* ===== 大 CTA 区 ===== */
.cta-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1e40af 100%);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-radius: 24px;
    margin: 0 20px 60px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: -50%; right: -10%;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(201,162,39,.2) 0%, transparent 70%);
    border-radius: 50%;
}
.cta-section::after {
    content: '';
    position: absolute;
    bottom: -50%; left: -10%;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(59,130,246,.25) 0%, transparent 70%);
    border-radius: 50%;
}
.cta-section h2 {
    font-size: 34px;
    color: #fff;
    margin-bottom: 14px;
    font-weight: 800;
    position: relative;
    z-index: 1;
    letter-spacing: -.5px;
}
.cta-section p {
    color: rgba(255,255,255,.8);
    font-size: 16px;
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}
.cta-section .btn {
    position: relative;
    z-index: 1;
    padding: 16px 48px;
    font-size: 16px;
}

/* ===== 办公地点增强 ===== */
.office-card-lg {
    text-align: center;
    padding: 30px 16px;
    background: #fff;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    transition: all .35s;
    position: relative;
    overflow: hidden;
}
.office-card-lg::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transition: transform .35s;
}
.office-card-lg:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.office-card-lg:hover::before { transform: scaleX(1); }
.office-card-lg .flag {
    font-size: 46px;
    margin-bottom: 12px;
    display: inline-block;
    transition: transform .3s;
}
.office-card-lg:hover .flag { transform: scale(1.15) rotate(-5deg); }
.office-card-lg h4 {
    font-size: 16px;
    color: var(--text-dark);
    margin-bottom: 6px;
    font-weight: 700;
}
.office-card-lg p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .hero-section { padding: 60px 0 70px; }
    .hero-title { font-size: 30px; }
    .hero-subtitle { font-size: 15px; margin-bottom: 30px; }
    .hero-buttons { flex-direction: column; align-items: stretch; }
    .hero-buttons .btn { width: 100%; text-align: center; padding: 14px 20px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .hero-stat { border-right: none; padding: 14px 8px; }
    .hero-stat .num { font-size: 24px; }
    .trust-inner { flex-direction: column; gap: 12px; }
    .product-showcase { grid-template-columns: 1fr; }
    .advantages-grid { grid-template-columns: 1fr; gap: 16px; }
    .advantage-item { padding: 20px; }
    .advantage-item .ai-icon { width: 48px; height: 48px; font-size: 22px; }
    .cta-section { padding: 50px 20px; border-radius: 16px; margin: 0 16px 40px; }
    .cta-section h2 { font-size: 22px; }
    .cta-section .btn { width: 100%; text-align: center; }
    .stat-big .stat-num { font-size: 32px; }
}