/* ========================================
   ForexRank - 全局样式表
   ======================================== */

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: #1a1a2e;
    background: #f8fafc;
    line-height: 1.6;
    overflow-x: hidden;
}
a { text-decoration: none; color: #f97316; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* ===== 颜色变量 ===== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0ea5e9;
    --accent: #f59e0b;
    --hot: #ef4444;
    --hot-dark: #dc2626;
    --success: #10b981;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --gray-bg: #f1f5f9;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #0ea5e9 100%);
    --gradient-hot: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
    --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,.15);
    --radius: 12px;
    --radius-lg: 16px;
}

/* ===== 通用按钮 ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 10px 22px; border-radius: 8px; font-weight: 600; font-size: .9rem;
    transition: all .25s ease; white-space: nowrap; border: 2px solid transparent;
}
.btn-primary { background: var(--gradient-primary); color: #fff; box-shadow: 0 4px 15px rgba(37,99,235,.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37,99,235,.5); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-login { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.35); padding: 8px 18px; border-radius: 8px; font-weight: 600; font-size: .88rem; transition: all .25s; }
.btn-login:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn-register { background: var(--gradient-hot); color: #fff; padding: 9px 20px; border-radius: 8px; font-weight: 700; font-size: .88rem; box-shadow: 0 4px 14px rgba(239,68,68,.35); }
.btn-register:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(239,68,68,.5); }
.btn-large { padding: 14px 32px; font-size: 1rem; border-radius: 10px; }
.btn-block { display: flex; width: 100%; }
.btn-sm { padding: 5px 12px; font-size: .78rem; border-radius: 6px; }

/* 脉冲动画 */
.pulse { animation: pulseAnim 2s infinite; }
@keyframes pulseAnim {
    0%, 100% { box-shadow: 0 0 0 0 rgba(239,68,68,.5); }
    50% { box-shadow: 0 0 0 10px rgba(239,68,68,0); }
}

/* ===== 顶部通告栏 ===== */
.top-bar {
    background: var(--gradient-hot); color: #fff; font-size: .82rem;
    padding: 7px 0; position: relative; z-index: 1001;
}
.top-bar-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; }
.top-bar-text { opacity: .95; }
.top-bar-link { color: #fff; font-weight: 700; text-decoration: underline; text-underline-offset: 2px; }
.top-bar-link:hover { opacity: .85; }

/* ===== 导航栏 ===== */
.navbar {
    position: sticky; top: 0; z-index: 1000;
    background: rgba(15,23,42,.92); backdrop-filter: blur(12px);
    padding: 12px 0; transition: all .3s;
}
.nav-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 8px; }
.logo-icon { font-size: 1.6rem; }
.logo-text { font-size: 1.3rem; font-weight: 800; color: #fff; letter-spacing: -.5px; }
.nav-menu { display: flex; gap: 6px; }
.nav-link { color: rgba(255,255,255,.72); padding: 8px 14px; border-radius: 6px; font-size: .88rem; font-weight: 500; transition: all .2s; }
.nav-link:hover, .nav-link.active { color: #fff; background: rgba(255,255,255,.08); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; color: #fff; font-size: 1.5rem; padding: 4px 8px; }

/* ===== Hero区域 ===== */
.hero {
    position: relative; min-height: 620px; display: flex; align-items: center;
    background: var(--gradient-dark); overflow: hidden; padding: 60px 0;
}
.hero-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 600px 400px at 20% 50%, rgba(37,99,235,.25), transparent),
        radial-gradient(ellipse 500px 500px at 80% 30%, rgba(14,165,233,.2), transparent),
        radial-gradient(ellipse 400px 300px at 50% 80%, rgba(239,68,68,.12), transparent);
}
.hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
    background-size: 50px 50px;
}
.hero-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; }
.hero-title { font-size: 3.2rem; font-weight: 900; color: #fff; line-height: 1.15; letter-spacing: -1px; }
.gradient-text { background: linear-gradient(135deg, #60a5fa, #34d399, #fbbf24); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; font-size: 20px;}
.hero-subtitle { margin-top: 20px; font-size: 1.08rem; color: rgba(255,255,255,.65); line-height: 1.75; max-width: 520px; }
.hero-stats { margin-top: 32px; display: flex; gap: 36px; }
.hero-stat { display: flex; flex-direction: column; }
.stat-num { font-size: 1.8rem; font-weight: 800; color: #fff; }
.stat-label { font-size: .8rem; color: rgba(255,255,255,.5); margin-top: 2px; }
.hero-actions { margin-top: 36px; display: flex; gap: 14px; flex-wrap: wrap; }

/* Hero 可视化卡片 */
.hero-visual { display: flex; flex-direction: column; gap: 14px; }
.hero-card {
    background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
    border-radius: 12px; padding: 16px 20px; backdrop-filter: blur(8px);
    animation: floatCard 6s ease-in-out infinite;
}
.hero-card:nth-child(2) { animation-delay: 1.2s; }
.hero-card:nth-child(3) { animation-delay: 2.4s; }
.hero-card:nth-child(4) { animation-delay: 3.6s; }
@keyframes floatCard { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }
.hc-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.hc-rank { font-size: .82rem; color: rgba(255,255,255,.5); font-weight: 600; }
.hc-name { font-size: 1rem; color: #fff; font-weight: 700; }
.hc-score { font-size: 2rem; font-weight: 900; background: var(--gradient-gold); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hc-bar { height: 4px; background: rgba(255,255,255,.1); border-radius: 2px; overflow: hidden; margin-top: 8px; }
.hc-bar-fill { height: 100%; border-radius: 2px; background: var(--gradient-primary); }

.hero-scroll { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,.35); font-size: .8rem; text-align: center; }
.scroll-arrow { font-size: 1.3rem; animation: bounce 2s infinite; margin-top: 4px; }
@keyframes bounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(6px)} }

/* ===== 通用Section ===== */
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 50px; }
.section-badge { display: inline-block; padding: 5px 16px; border-radius: 20px; font-size: .8rem; font-weight: 700; margin-bottom: 14px; }
.section-badge:not(.hot-badge) { background: rgba(37,99,235,.1); color: var(--primary); }
.hot-badge { background: rgba(239,68,68,.1); color: var(--hot); }
.section-title { font-size: 2rem; font-weight: 800; color: var(--dark); letter-spacing: -.5px; }
.section-desc { margin-top: 10px; font-size: .98rem; color: var(--gray); max-width: 600px; margin-left: auto; margin-right: auto; }

/* ===== 平台卡片网格 ===== */
.platform-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
}

.platform-card {
    position: relative; background: #fff; border-radius: var(--radius-lg);
    padding: 28px 22px 22px; box-shadow: var(--shadow-sm);
    transition: all .35s ease; display: flex; flex-direction: column;
    border: 1px solid var(--gray-light);
}
.platform-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); border-color: transparent; }

.card-top-bar { position: absolute; top: 0; left: 0; right: 0; height: 4px; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
.hot-bar { background: var(--gradient-hot); }
.normal-bar { background: var(--gradient-primary); }

.card-badge { position: absolute; top: 14px; right: 14px; font-size: .7rem; font-weight: 700; padding: 3px 10px; border-radius: 12px; }
.hot-badge-small { background: rgba(239,68,68,.08); color: var(--hot); }
.normal-badge-small { background: rgba(37,99,235,.08); color: var(--primary); }

.card-rank { font-size: 2rem; margin-bottom: 8px; }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.card-name { font-size: 1.15rem; font-weight: 800; color: var(--dark); }
.card-country { font-size: .78rem; color: var(--gray); white-space: nowrap; }
.card-desc { font-size: .85rem; color: var(--gray); line-height: 1.6; margin-bottom: 12px; flex-grow: 0; }

.card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.tag { font-size: .72rem; padding: 3px 9px; border-radius: 4px; background: var(--gray-bg); color: var(--gray); font-weight: 500; }
.tag-hot { background: rgba(239,68,68,.08); color: var(--hot); }

.card-score-row { display: flex; align-items: center; gap: 10px; padding: 12px 0; border-top: 1px solid var(--gray-light); border-bottom: 1px solid var(--gray-light); margin-bottom: 14px; }
.card-score-label { font-size: .82rem; color: var(--gray); }
.card-score-value { font-size: 1.5rem; font-weight: 900; color: var(--primary); }
.hot-score { color: var(--hot); }
.card-stars { font-size: .82rem; margin-left: auto; }

.card-data-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; margin-bottom: 16px; }
.data-item { display: flex; flex-direction: column; }
.data-label { font-size: .72rem; color: var(--gray); }
.data-value { font-size: .88rem; font-weight: 700; color: var(--dark); }

.card-actions { display: flex; gap: 8px; margin-top: auto; }
.card-actions .btn { flex: 1; padding: 9px 12px; font-size: .82rem; }

/* ===== 开户流程 ===== */
.section-process { background: #fff; }
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.process-steps::before { content: ''; position: absolute; top: 40px; left: 12.5%; right: 12.5%; height: 2px; background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent), var(--success)); border-radius: 1px; z-index: 0; }
.process-step { text-align: center; position: relative; z-index: 1; }
.step-num {
    width: 48px; height: 48px; border-radius: 50%; margin: 0 auto 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 800; color: #fff;
    background: var(--gradient-primary); box-shadow: 0 4px 12px rgba(37,99,235,.3);
}
.process-step:nth-child(2) .step-num { background: linear-gradient(135deg, #0ea5e9, #06b6d4); }
.process-step:nth-child(3) .step-num { background: linear-gradient(135deg, #f59e0b, #f97316); }
.process-step:nth-child(4) .step-num { background: linear-gradient(135deg, #10b981, #059669); }
.step-icon { font-size: 2rem; margin-bottom: 10px; }
.step-title { font-size: 1.05rem; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.step-desc { font-size: .85rem; color: var(--gray); line-height: 1.6; }
.step-tip { display: block; margin-top: 10px; font-size: .76rem; color: var(--primary); font-weight: 500; }

/* ===== 参数对比表 ===== */
.section-comparison { background: var(--gray-bg); }
.comparison-table-wrap { overflow-x: auto; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.comparison-table { width: 100%; border-collapse: collapse; background: #fff; min-width: 800px; }
.comparison-table thead { background: var(--dark); }
.comparison-table th { padding: 14px 16px; text-align: left; font-size: .82rem; font-weight: 600; color: rgba(255,255,255,.8); }
.comparison-table td { padding: 13px 16px; font-size: .85rem; border-bottom: 1px solid var(--gray-light); color: var(--dark); }
.comparison-table tbody tr:hover { background: #f8fafc; }
.comparison-table .row-hot { background: rgba(239,68,68,.025); }
.comparison-table .row-hot:hover { background: rgba(239,68,68,.05); }
.rank-medal { font-size: 1.1rem; }
.col-highlight { background: rgba(239,68,68,.06) !important; }
.hot-text { color: var(--hot); }

/* ===== 外汇学院 ===== */
.section-academy { background: #fff; }
.academy-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.academy-card {
    background: var(--gray-bg); border-radius: var(--radius); padding: 28px 24px;
    transition: all .3s; border: 1px solid transparent;
}
.academy-card:hover { background: #fff; box-shadow: var(--shadow-lg); border-color: var(--primary); transform: translateY(-4px); }
.academy-icon { font-size: 2.2rem; margin-bottom: 14px; }
.academy-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.academy-card p { font-size: .85rem; color: var(--gray); line-height: 1.6; }
.academy-level { display: inline-block; margin-top: 12px; font-size: .72rem; font-weight: 700; padding: 3px 10px; border-radius: 10px; background: rgba(37,99,235,.08); color: var(--primary); }

/* ===== 资讯 ===== */
.section-news { background: var(--gray-bg); }
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.news-card { background: #fff; border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); transition: all .3s; border: 1px solid var(--gray-light); }
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.news-tag { display: inline-block; font-size: .7rem; font-weight: 700; padding: 3px 10px; border-radius: 10px; margin-bottom: 12px; }
.tag-hot-news { background: rgba(239,68,68,.08); color: var(--hot); }
.tag-industry { background: rgba(37,99,235,.08); color: var(--primary); }
.tag-platform { background: rgba(16,185,129,.08); color: var(--success); }
.tag-policy { background: rgba(245,158,11,.08); color: var(--accent); }
.news-card h3 { font-size: .95rem; font-weight: 700; color: var(--dark); margin-bottom: 8px; line-height: 1.4; }
.news-card p { font-size: .82rem; color: var(--gray); line-height: 1.55; }
.news-date { display: block; margin-top: 12px; font-size: .75rem; color: var(--gray); opacity: .7; }

/* ===== FAQ ===== */
.section-faq { background: #fff; }
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--gray-light); }
.faq-question { width: 100%; text-align: left; padding: 18px 0; font-size: .98rem; font-weight: 600; color: var(--dark); display: flex; align-items: center; justify-content: space-between; transition: color .2s; }
.faq-question:hover { color: var(--primary); }
.faq-toggle { font-size: 1.3rem; font-weight: 400; color: var(--gray); transition: transform .3s; }
.faq-item.open .faq-toggle { transform: rotate(45deg); color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-answer p { padding: 0 0 18px; font-size: .88rem; color: var(--gray); line-height: 1.7; }
.faq-item.open .faq-answer { max-height: 300px; }

/* ===== 底部CTA ===== */
.section-cta { background: var(--gradient-dark); padding: 60px 0; }
.cta-box { text-align: center; max-width: 680px; margin: 0 auto; }
.cta-box h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
.cta-box p { font-size: 1rem; color: rgba(255,255,255,.6); margin-bottom: 28px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.footer { background: #0a0f1c; padding: 50px 0 24px; }
.footer-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1.2fr 2fr; gap: 50px; margin-bottom: 36px; }
.footer-brand .logo-text { color: #fff; }
.footer-brand p { margin-top: 12px; font-size: .85rem; color: rgba(255,255,255,.4); line-height: 1.6; max-width: 280px; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.footer-col h4 { font-size: .9rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
.footer-col a { display: block; font-size: .84rem; color: rgba(255,255,255,.45); padding: 4px 0; transition: color .2s; }
.footer-col a:hover { color: var(--primary-light); }
.footer-bottom { max-width: 1280px; margin: 0 auto; padding: 20px 24px 0; border-top: 1px solid rgba(255,255,255,.06); }
.footer-bottom p { font-size: .78rem; color: rgba(255,255,255,.3); text-align: center; }

/* ===== 模态框 ===== */
.modal-overlay { position: fixed; inset: 0; z-index: 2000; background: rgba(0,0,0,.6); backdrop-filter: blur(4px); display: none; align-items: center; justify-content: center; padding: 20px; }
.modal-overlay.active { display: flex; }
.modal-box { background: #fff; border-radius: var(--radius-lg); padding: 36px 32px; max-width: 420px; width: 100%; position: relative; animation: modalIn .3s ease; }
@keyframes modalIn { from { opacity: 0; transform: translateY(20px) scale(.96); } to { opacity: 1; transform: translateY(0) scale(1); } }
.modal-close { position: absolute; top: 14px; right: 14px; font-size: 1.2rem; color: var(--gray); width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: all .2s; }
.modal-close:hover { background: var(--gray-bg); color: var(--dark); }
.modal-box h2 { font-size: 1.3rem; font-weight: 800; color: var(--dark); margin-bottom: 4px; }
.modal-sub { font-size: .85rem; color: var(--gray); margin-bottom: 22px; }
.modal-form { display: flex; flex-direction: column; gap: 14px; }
.modal-form label { font-size: .82rem; font-weight: 600; color: var(--dark); }
.modal-form input { padding: 11px 14px; border: 1.5px solid var(--gray-light); border-radius: 8px; font-size: .9rem; transition: border-color .2s; outline: none; }
.modal-form input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
.modal-divider { text-align: center; margin: 18px 0 14px; position: relative; }
.modal-divider::before { content: ''; position: absolute; top: 50%; left: 0; right: 0; height: 1px; background: var(--gray-light); }
.modal-divider span { position: relative; background: #fff; padding: 0 12px; font-size: .8rem; color: var(--gray); }
.modal-social { display: flex; gap: 10px; }
.social-btn { flex: 1; padding: 10px; border-radius: 8px; font-size: .88rem; font-weight: 600; border: 1.5px solid var(--gray-light); transition: all .2s; }
.social-btn:hover { border-color: var(--primary); background: rgba(37,99,235,.03); }
.modal-footer { text-align: center; margin-top: 18px; font-size: .85rem; color: var(--gray); }
.modal-footer a { color: var(--primary); font-weight: 600; }

/* ===== 入场动画 ===== */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity .6s ease, transform .6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
    .platform-grid { grid-template-columns: repeat(3, 1fr); }
    .hero-title { font-size: 2.6rem; }
}
@media (max-width: 1024px) {
    .platform-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { max-width: 400px; margin: 0 auto; width: 100%; }
    .process-steps { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .process-steps::before { display: none; }
    .academy-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: 1fr; gap: 30px; }
}
@media (max-width: 768px) {
    .nav-menu { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--dark); flex-direction: column; padding: 16px 24px; gap: 4px; box-shadow: var(--shadow-lg); }
    .nav-menu.open { display: flex; }
    .nav-toggle { display: block; }
    .nav-actions .btn-login { display: none; }
    .hero { min-height: auto; padding: 40px 0; }
    .hero-title { font-size: 2rem; }
    .hero-stats { gap: 20px; }
    .stat-num { font-size: 1.4rem; }
    .section { padding: 56px 0; }
    .section-title { font-size: 1.5rem; }
    .platform-grid { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: 1fr; }
    .academy-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: repeat(2, 1fr); }
    .top-bar-inner { flex-direction: column; gap: 4px; text-align: center; }
}
@media (max-width: 480px) {
    .hero-title { font-size: 1.7rem; }
    .hero-actions .btn { width: 100%; }
    .cta-actions .btn { width: 100%; }
}