/* ========== 基础重置 ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
    --primary: #008B8B;
    --primary-dark: #006666;
    --primary-light: #E0F5F5;
    --accent: #00A8A8;
    --text: #2C3E50;
    --text-light: #7F8C8D;
    --bg: #F5FAFA;
    --white: #FFFFFF;
    --border: #D5E8E8;
    --shadow: 0 2px 12px rgba(0,139,139,0.08);
    --radius: 8px;
}
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background: var(--white);
    line-height: 1.7;
    font-size: 15px;
}
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.site-main { min-height: 60vh; padding-bottom: 40px; }

/* ========== 顶部导航 ========== */
.site-header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}
.logo img { max-height: 40px; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav > a, .nav-dropdown > a {
    padding: 8px 16px;
    border-radius: var(--radius);
    color: var(--text);
    font-weight: 500;
    font-size: 15px;
    transition: all .2s;
}
.main-nav > a:hover, .main-nav > a.active,
.nav-dropdown > a:hover, .nav-dropdown > a.active {
    background: var(--primary-light);
    color: var(--primary);
}
.nav-dropdown { position: relative; }
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    min-width: 180px;
    padding: 8px 0;
    z-index: 100;
}
.nav-dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--text);
    font-size: 14px;
}
.dropdown-menu a:hover { background: var(--primary-light); color: var(--primary); }

.header-actions { display: flex; gap: 10px; }
.btn {
    display: inline-block;
    padding: 9px 22px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s;
    border: 2px solid transparent;
    text-align: center;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-outline { border-color: var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary); color: #fff; }

.qq-bar { padding: 6px 0 10px; text-align: center; }
.qq-copy {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 5px 18px;
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all .2s;
}
.qq-copy:hover { background: var(--primary); color: #fff; }
.qq-copy small { opacity: .7; }

.mobile-toggle { display: none; background: none; border: none; font-size: 24px; color: var(--primary); cursor: pointer; }

/* ========== Hero区域 ========== */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}
.hero h1 { font-size: 40px; margin-bottom: 16px; font-weight: 700; }
.hero p { font-size: 18px; opacity: .9; max-width: 700px; margin: 0 auto 30px; }
.hero .btn { font-size: 16px; padding: 12px 36px; }
.hero .btn-white { background: #fff; color: var(--primary); border-color: #fff; }

/* ========== 卡片网格 ========== */
.section { padding: 60px 0; }
.section-title { text-align: center; margin-bottom: 40px; }
.section-title h2 { font-size: 30px; color: var(--primary-dark); margin-bottom: 10px; }
.section-title p { color: var(--text-light); font-size: 15px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px;
    transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 28px rgba(0,139,139,0.14); }
.card-icon { font-size: 36px; margin-bottom: 14px; }
.card h3 { font-size: 18px; margin-bottom: 10px; color: var(--primary-dark); }
.card p { color: var(--text-light); font-size: 14px; line-height: 1.8; }

/* ========== 产品页面表格 ========== */
.product-table { width: 100%; border-collapse: collapse; margin-top: 24px; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.product-table th { background: var(--primary); color: #fff; padding: 12px 16px; text-align: left; font-size: 14px; }
.product-table td { padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: 14px; }
.product-table tr:hover td { background: var(--primary-light); }

/* ========== 文章列表 ========== */
.news-list { display: grid; gap: 20px; }
.news-item {
    display: flex;
    gap: 20px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform .2s;
}
.news-item:hover { transform: translateY(-2px); }
.news-item img { width: 220px; height: 150px; object-fit: cover; flex-shrink: 0; }
.news-item-body { padding: 18px 20px 18px 0; flex: 1; }
.news-item-body h3 { font-size: 17px; margin-bottom: 8px; }
.news-item-body h3 a { color: var(--text); }
.news-item-body h3 a:hover { color: var(--primary); }
.news-item-body p { color: var(--text-light); font-size: 14px; margin-bottom: 10px; }
.news-meta { font-size: 12px; color: var(--text-light); }

/* ========== 文章详情 ========== */
.article-content { max-width: 860px; margin: 0 auto; }
.article-content h1 { font-size: 28px; margin-bottom: 16px; color: var(--primary-dark); }
.article-meta { color: var(--text-light); font-size: 13px; margin-bottom: 28px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.article-body { font-size: 16px; line-height: 2; word-break: break-word; overflow-wrap: break-word; }
.article-body img { border-radius: var(--radius); margin: 20px 0; max-width: 100%; height: auto; }
.article-body p { margin-bottom: 16px; }

/* ========== 页脚 ========== */
.site-footer { background: #F0F7F7; border-top: 1px solid var(--border); padding-top: 48px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 36px; }
.footer-col h4 { color: var(--primary-dark); margin-bottom: 14px; font-size: 16px; }
.footer-col p, .footer-col li { color: var(--text-light); font-size: 13px; line-height: 2; }
.footer-col a { color: var(--text-light); }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid var(--border); padding: 18px 0; text-align: center; font-size: 12px; color: var(--text-light); }
.footer-bottom p { margin-bottom: 4px; }

/* ========== 手机端固定底栏 ========== */
.mobile-fixed-bar { display: none; }

/* ========== 404页面 ========== */
.error-page { text-align: center; padding: 120px 20px; }
.error-page .code { font-size: 100px; font-weight: 800; color: var(--primary); line-height: 1; }
.error-page h1 { font-size: 24px; margin: 16px 0; }
.error-page p { color: var(--text-light); margin-bottom: 28px; }

/* ========== 联系页面 ========== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.contact-info-item { display: flex; gap: 14px; margin-bottom: 22px; align-items: flex-start; }
.contact-icon { font-size: 24px; width: 48px; height: 48px; background: var(--primary-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }

/* ========== 响应式 ========== */
@media (max-width: 992px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    body { padding-bottom: 70px; }
    .header-inner { height: 56px; position: relative; }

    /* 汉堡按钮 */
    .mobile-toggle {
        display: block;
        background: none;
        border: none;
        font-size: 26px;
        color: var(--primary);
        cursor: pointer;
        padding: 6px 10px;
        line-height: 1;
        transition: transform .2s;
    }
    .mobile-toggle.active { transform: rotate(90deg); }

    /* 隐藏桌面按钮组 */
    .header-actions { display: none; }

    /* 主菜单：固定定位，滚动不遮挡 */
    .main-nav {
        display: none;
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        bottom: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 8px 16px 90px;
        overflow-y: auto;
        z-index: 1200;
        box-shadow: 0 8px 20px rgba(0,0,0,.15);
    }
    .main-nav.open { display: flex; }

    .main-nav > a,
    .nav-dropdown > a {
        display: block;
        width: 100%;
        padding: 14px 16px;
        border-radius: 8px;
        font-size: 16px;
        border-bottom: 1px solid #EEF4F4;
    }

    /* 子菜单 */
    .nav-dropdown { width: 100%; position: static; }
    .nav-dropdown > a::after {
        content: ' ▾';
        float: right;
        transition: transform .2s;
    }
    .nav-dropdown.open > a::after { transform: rotate(180deg); display: inline-block; }

    .dropdown-menu {
        display: none;
        position: static;
        box-shadow: none;
        padding: 0 0 0 16px;
        background: #F5FAFA;
        border-radius: 8px;
        margin: 4px 0 8px;
    }
    .nav-dropdown.open .dropdown-menu { display: block; }
    .dropdown-menu a {
        display: block;
        padding: 12px 16px;
        font-size: 15px;
        border-bottom: 1px solid #E0EEEE;
    }
    .dropdown-menu a:last-child { border-bottom: none; }
}
/* ============================================================
   新增模块样式
   ============================================================ */

/* ---------- 平台介绍（首页） ---------- */
.intro-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 48px;
    align-items: center;
}
.intro-text h2 { font-size: 28px; color: var(--primary-dark); margin-bottom: 18px; }
.intro-text p { color: var(--text); font-size: 15px; line-height: 2; margin-bottom: 14px; }
.intro-text .btn { margin-top: 10px; }
.intro-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.stat-item {
    background: linear-gradient(135deg, #F0FBFB 0%, #E0F5F5 100%);
    border-radius: 12px;
    padding: 24px 16px;
    text-align: center;
    border: 1px solid #D5EEEE;
}
.stat-num {
    font-size: 30px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.1;
    margin-bottom: 6px;
}
.stat-num span { font-size: 14px; font-weight: 600; margin-left: 2px; }
.stat-label { font-size: 13px; color: var(--text-light); }

/* ---------- 账户类型 ---------- */
.account-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: stretch;
}
.account-card {
    background: #fff;
    border-radius: 12px;
    padding: 32px 26px;
    border: 1.5px solid #E0F0F0;
    box-shadow: var(--shadow);
    position: relative;
    transition: transform .2s, box-shadow .2s, border-color .2s;
    display: flex;
    flex-direction: column;
}
.account-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0,139,139,.15);
    border-color: var(--primary);
}
.account-card.featured {
    border: 2px solid var(--primary);
    box-shadow: 0 12px 32px rgba(0,139,139,.18);
    transform: scale(1.03);
}
.account-card h3 {
    font-size: 20px;
    color: var(--primary-dark);
    margin-bottom: 14px;
    text-align: center;
}
.account-price {
    text-align: center;
    font-size: 34px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 22px;
    line-height: 1;
}
.account-price span { font-size: 14px; color: var(--text-light); font-weight: 500; }
.account-features {
    list-style: none;
    padding: 0;
    margin-bottom: 24px;
    flex: 1;
}
.account-features li {
    font-size: 14px;
    color: var(--text);
    padding: 9px 0;
    border-bottom: 1px dashed #EEF4F4;
}
.account-features li:last-child { border-bottom: none; }
.account-card .btn { width: 100%; }
.badge-recommend {
    position: absolute;
    top: -12px;
    right: 20px;
    background: linear-gradient(135deg, #FFB84D, #F39C12);
    color: #fff;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    box-shadow: 0 4px 12px rgba(243,156,18,.4);
}

/* ---------- 全球办公室 ---------- */
.office-card {
    background: #fff;
    border-radius: 12px;
    padding: 28px 24px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform .2s;
    border: 1px solid #E8F0F0;
}
.office-card:hover { transform: translateY(-4px); }
.office-flag { font-size: 44px; margin-bottom: 12px; line-height: 1; }
.office-card h3 { font-size: 17px; color: var(--primary-dark); margin-bottom: 10px; }
.office-card p { font-size: 13px; color: var(--text-light); line-height: 1.7; margin-bottom: 12px; }
.office-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-dark);
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 600;
}

/* ---------- 奖项展示 ---------- */
.awards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.award-card {
    background: linear-gradient(135deg, #FFFFFF 0%, #F5FAFA 100%);
    border-radius: 12px;
    padding: 30px 22px;
    text-align: center;
    border: 1px solid #E8F0F0;
    box-shadow: var(--shadow);
    transition: transform .2s, box-shadow .2s;
}
.award-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 32px rgba(0,139,139,.15);
    border-color: var(--primary);
}
.award-icon {
    font-size: 48px;
    line-height: 1;
    margin-bottom: 16px;
    filter: drop-shadow(0 4px 8px rgba(0,139,139,.2));
}
.award-card h3 { font-size: 15px; color: var(--primary-dark); margin-bottom: 8px; line-height: 1.4; }
.award-card p { font-size: 12px; color: var(--text-light); }

/* ---------- 时间轴（关于我们） ---------- */
.timeline {
    position: relative;
    max-width: 820px;
    margin: 0 auto;
    padding-left: 40px;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--primary-light));
}
.timeline-item {
    position: relative;
    margin-bottom: 32px;
    display: flex;
    gap: 24px;
    align-items: flex-start;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -32px;
    top: 8px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px var(--primary-light);
}
.timeline-year {
    flex-shrink: 0;
    width: 80px;
    font-size: 20px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.3;
}
.timeline-content {
    flex: 1;
    background: #fff;
    border-radius: 10px;
    padding: 18px 22px;
    border-left: 3px solid var(--primary);
    box-shadow: 0 2px 10px rgba(0,139,139,.06);
}
.timeline-content h3 { font-size: 16px; color: var(--primary-dark); margin-bottom: 6px; }
.timeline-content p { font-size: 14px; color: var(--text-light); line-height: 1.8; }

/* ---------- 步骤卡片（开户流程） ---------- */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.step-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px 22px;
    text-align: center;
    box-shadow: var(--shadow);
    border-top: 4px solid var(--primary);
    transition: transform .2s;
    position: relative;
}
.step-card:hover { transform: translateY(-4px); }
.step-num {
    font-size: 42px;
    font-weight: 800;
    color: var(--primary-light);
    line-height: 1;
    margin-bottom: 14px;
    font-family: Georgia, serif;
}
.step-card h3 {
    font-size: 16px;
    color: var(--primary-dark);
    margin-bottom: 10px;
}
.step-card p { font-size: 13px; color: var(--text-light); line-height: 1.8; }

/* ---------- FAQ ---------- */
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
    background: #fff;
    border-radius: 10px;
    border: 1px solid #E5EFEF;
    overflow: hidden;
    transition: box-shadow .2s, border-color .2s;
}
.faq-item:hover {
    box-shadow: 0 4px 16px rgba(0,139,139,.1);
    border-color: var(--primary-light);
}
.faq-q {
    padding: 18px 22px 18px 52px;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary-dark);
    position: relative;
    cursor: pointer;
    line-height: 1.6;
    background: #F8FCFC;
    user-select: none;
}
.faq-q::before {
    content: 'Q';
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
}
.faq-q::after {
    content: '＋';
    position: absolute;
    right: 22px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
    color: var(--primary);
    font-weight: 400;
    transition: transform .3s;
}
.faq-item.open .faq-q::after { transform: translateY(-50%) rotate(45deg); }
.faq-a {
    padding: 0 22px 20px 52px;
    font-size: 14px;
    color: var(--text);
    line-height: 2;
    border-top: 1px dashed #E5EFEF;
    padding-top: 16px;
    margin-top: 0;
    background: #fff;
}
.faq-item:not(.open) .faq-a { display: none; }

/* ---------- 热门文章（新闻中心底部） ---------- */
.hot-news-list { display: flex; flex-direction: column; gap: 12px; }
.hot-news-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: #fff;
    border-radius: 10px;
    padding: 18px 20px;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 2px 8px rgba(0,139,139,.06);
    transition: transform .2s, box-shadow .2s, border-color .2s;
    border: 1px solid transparent;
}
.hot-news-item:hover {
    transform: translateX(6px);
    box-shadow: 0 6px 20px rgba(0,139,139,.15);
    border-color: var(--primary-light);
}
.hot-rank {
    flex-shrink: 0;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: #EEF4F4;
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 800;
    font-family: Georgia, serif;
}
.hot-rank.rank-1 { background: linear-gradient(135deg,#FF5C5C,#E63946); color: #fff; box-shadow: 0 4px 12px rgba(230,57,70,.3); }
.hot-rank.rank-2 { background: linear-gradient(135deg,#FFB84D,#F39C12); color: #fff; box-shadow: 0 4px 12px rgba(243,156,18,.3); }
.hot-rank.rank-3 { background: linear-gradient(135deg,#FFD97D,#F9C74F); color: #fff; box-shadow: 0 4px 12px rgba(249,199,79,.3); }
.hot-body { flex: 1; min-width: 0; }
.hot-body h3 {
    font-size: 15px;
    color: var(--text);
    margin-bottom: 6px;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
}
.hot-news-item:hover .hot-body h3 { color: var(--primary); }
.hot-body p {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 6px;
    line-height: 1.6;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
}
.hot-meta { font-size: 12px; color: var(--text-light); }
.hot-meta span { margin: 0 6px; }

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
    .intro-grid { grid-template-columns: 1fr; gap: 32px; }
    .account-grid { grid-template-columns: 1fr; gap: 20px; }
    .account-card.featured { transform: none; }
    .awards-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .intro-text h2 { font-size: 22px; }
    .intro-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .stat-num { font-size: 24px; }
    .awards-grid { grid-template-columns: 1fr; }
    .steps-grid { grid-template-columns: 1fr; }
    .timeline { padding-left: 32px; }
    .timeline::before { left: 11px; }
    .timeline-item { flex-direction: column; gap: 8px; }
    .timeline-item::before { left: -28px; }
    .timeline-year { width: auto; font-size: 18px; }
    .account-price { font-size: 28px; }
    .faq-q { padding: 16px 44px 16px 44px; font-size: 14px; }
    .faq-q::before { left: 12px; width: 22px; height: 22px; }
    .faq-q::after { right: 16px; }
    .faq-a { padding: 14px 18px 16px 18px; }
    .hot-news-item { padding: 14px 16px; gap: 12px; }
    .hot-rank { width: 28px; height: 28px; font-size: 13px; }
    .hot-body h3 { font-size: 14px; }
}
/* ============================================================
   FAQ 双保险样式（无JS也能显示答案）
   ============================================================ */

/* 默认显示答案（作为 JS 失效时的兜底） */
.faq-a {
    display: block;
}

/* 当 <html> 有 .js-enabled 类时，才隐藏未展开的答案 */
html.js-enabled .faq-item:not(.open) .faq-a {
    display: none;
}