/* ═══════════════════════════════════════════
   MT4 金融风格官网 — 深色主题 + 金色点缀
   ═══════════════════════════════════════════ */

:root{
  --bg:#0b1020;
  --bg2:#111733;
  --card:#161d3a;
  --card2:#1b2447;
  --line:rgba(255,255,255,.08);
  --line2:rgba(255,255,255,.14);
  --gold:#d4a94a;
  --gold2:#e6c36a;
  --gold-soft:rgba(212,169,74,.16);
  --text:#e8ecf6;
  --text2:#aab2c8;
  --text3:#7c849f;
  --green:#22c55e;
  --red:#ef4444;
  --shadow:0 12px 40px rgba(0,0,0,.35);
  --r:14px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
img{max-width:100%}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ───── 通用按钮 ───── */
.btn{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;
  padding:12px 24px;border-radius:10px;font-size:15px;transition:.25s;
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#1a1407;box-shadow:0 8px 24px rgba(212,169,74,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(212,169,74,.4)}
.btn-ghost{color:var(--text);border:1px solid var(--line2)}
.btn-ghost:hover{background:var(--gold-soft);border-color:var(--gold)}
.btn-download{width:100%;justify-content:center;background:var(--card2);color:var(--text);border:1px solid var(--line2);margin-top:auto}
.btn-download:hover{background:var(--gold);color:#1a1407;border-color:var(--gold)}
.btn-download .arr{font-size:17px}
.btn-nav{background:var(--gold);color:#1a1407;padding:9px 18px}
.btn-nav:hover{background:var(--gold2)}

/* ═════════ 顶部通知栏 ═════════ */
.top-bar{background:#070b18;border-bottom:1px solid var(--line);font-size:12.5px;color:var(--text3)}
.top-bar-inner{display:flex;align-items:center;justify-content:space-between;height:34px}
.top-bar-text white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top-bar-links{display:flex;align-items:center;gap:8px;flex-shrink:0}
.top-bar-links a:hover{color:var(--gold)}
.top-bar-links .sep{color:#333}

/* ═════════ 导航栏 ═════════ */
.navbar{position:sticky;top:0;z-index:60;background:rgba(11,16,32,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:.3s}
.navbar.scrolled{box-shadow:0 6px 24px rgba(0,0,0,.3)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px}
.logo-mark{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#1a1407;font-weight:800;font-size:15px;padding:5px 9px;border-radius:8px;letter-spacing:.5px}
.logo-text{font-size:17px;font-weight:500;color:var(--text)}
.logo-text b{color:var(--gold);font-weight:800}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:14.5px;color:var(--text2);font-weight:500;transition:.2s;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a:not(.btn-nav)::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--gold);transition:.25s;border-radius:2px}
.nav-links a:not(.btn-nav):hover::after,.nav-links a.active::after{width:100%}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:6px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* ═════════ Hero ═════════ */
.hero{position:relative;overflow:hidden;padding:64px 0 72px;border-bottom:1px solid var(--line)}
.hero-bg-grid{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:52px 52px;mask-image:radial-gradient(ellipse 80% 70% at 50% 40%,#000 40%,transparent 100%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;background:var(--gold-soft);border:1px solid rgba(212,169,74,.3);color:var(--gold2);font-size:13px;padding:6px 14px;border-radius:30px;margin-bottom:22px}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(34,197,94,.2)}
.hero h1{font-size:52px;line-height:1.12;font-weight:800;letter-spacing:-.5px}
.gold{background:linear-gradient(135deg,var(--gold),var(--gold2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-desc{margin:22px 0 30px;font-size:16.5px;color:var(--text2);max-width:520px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:46px;flex-wrap:wrap}
.h-stat{display:flex;flex-direction:column}
.h-stat b{font-size:30px;font-weight:800;color:var(--text);line-height:1}
.h-stat b span{color:var(--gold)}
.h-stat span{color:var(--gold);font-weight:700;font-size:16px;margin-left:2px}
.h-stat label{font-size:12.5px;color:var(--text3);margin-top:5px}

/* 终端演示 */
.terminal{background:linear-gradient(180deg,#0f1530,#0b1126);border:1px solid var(--line2);border-radius:16px;overflow:hidden;box-shadow:var(--shadow),0 0 0 1px rgba(212,169,74,.06);position:relative}
.terminal::before{content:"";position:absolute;inset:-1px;border-radius:16px;background:linear-gradient(135deg,rgba(212,169,74,.25),transparent 40%);z-index:-1;filter:blur(8px)}
.term-header{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.term-dot{width:11px;height:11px;border-radius:50%}
.term-dot.red{background:#ff5f56}.term-dot.yellow{background:#ffbd2e}.term-dot.green{background:#27c93f}
.term-title{margin-left:10px;font-size:12.5px;color:var(--text3)}
.term-body{padding:8px 6px 12px}
.term-row{display:grid;grid-template-columns:1.1fr 1fr 1fr .8fr;padding:9px 14px;font-size:13.5px;font-family:"SF Mono",Menlo,Consolas,monospace;color:var(--text2);border-bottom:1px solid rgba(255,255,255,.04)}
.term-row:last-of-type{border-bottom:none}
.term-head{color:var(--text3);font-size:11.5px;letter-spacing:1px;text-transform:uppercase;font-family:inherit}
.term-row .up{color:var(--green);font-size:12.5px}
.term-row .down{color:var(--red);font-size:12.5px}
.term-chart{margin:6px 12px 0;background:rgba(255,255,255,.02);border:1px solid var(--line);border-radius:10px;padding:6px}
.term-chart svg{width:100%;height:80px;display:block}

/* ═════════ Section 通用 ═════════ */
.section{padding:88px 0;position:relative}
.section-dark{background:linear-gradient(180deg,#0a0f22,#0d142b)}
.sec-head{text-align:center;max-width:720px;margin:0 auto 52px}
.sec-tag{display:inline-block;font-size:12px;letter-spacing:3px;color:var(--gold);text-transform:uppercase;margin-bottom:12px;font-weight:600}
.sec-head h2{font-size:36px;font-weight:800;letter-spacing:-.3px}
.sec-head p{margin-top:14px;color:var(--text2);font-size:15.5px}
.sec-head.light h2{color:var(--text)}
.sec-head.light p{color:var(--text2)}

/* ═════════ 下载中心 ═════════ */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.dl-card{background:linear-gradient(180deg,var(--card),var(--card2));border:1px solid var(--line);border-radius:var(--r);padding:26px;display:flex;flex-direction:column;transition:.3s;position:relative;overflow:hidden}
.dl-card::after{content:"";position:absolute;top:0;right:0;width:90px;height:90px;background:radial-gradient(circle,rgba(212,169,74,.12),transparent 70%);opacity:0;transition:.3s}
.dl-card:hover{border-color:rgba(212,169,74,.4);transform:translateY(-4px);box-shadow:var(--shadow)}
.dl-card:hover::after{opacity:1}
.dl-card-top{display:flex;align-items:flex-start;gap:14px;margin-bottom:16px}
.dl-icon{width:46px;height:46px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:22px;background:color-mix(in srgb,var(--c) 18%,transparent);color:var(--c);border:1px solid color-mix(in srgb,var(--c) 35%,transparent);flex-shrink:0}
.dl-card-top h3{font-size:17.5px;font-weight:700}
.dl-meta{font-size:12px;color:var(--text3)}
.dl-badge{margin-left:auto;font-size:11px;font-weight:700;padding:4px 10px;border-radius:20px;background:var(--gold-soft);color:var(--gold2)}
.dl-badge.hot{background:rgba(34,197,94,.15);color:#4ade80}
.dl-card>p{font-size:14px;color:var(--text2);margin-bottom:16px;min-height:63px}
.dl-feats{margin-bottom:22px;display:flex;flex-direction:column;gap:7px}
.dl-feats li{font-size:13px;color:var(--text2)}

/* 下载提示 */
.dl-note{margin-top:32px;display:flex;align-items:center;gap:12px;justify-content:center;font-size:13.5px;color:var(--text3);background:rgba(255,255,255,.02);border:1px solid var(--line);border-radius:12px;padding:16px}
.dl-note b{color:var(--gold2)}

/* ═════════ 平台优势 ═════════ */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat-card{background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.01));border:1px solid var(--line);border-radius:var(--r);padding:28px;transition:.3s}
.feat-card:hover{border-color:rgba(212,169,74,.35);background:rgba(212,169,74,.04);transform:translateY(-3px)}
.feat-ico{width:48px;height:48px;border-radius:12px;background:var(--gold-soft);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}
.feat-card h4{font-size:17px;font-weight:700;margin-bottom:8px}
.feat-card p{font-size:14px;color:var(--text2)}

/* ═════════ 中文专区 Tabs ═════════ */
.tabs{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:36px;background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:14px;padding:6px;max-width:640px;margin-left:auto;margin-right:auto}
.tab-btn{flex:1;min-width:120px;padding:11px 16px;border-radius:10px;font-size:14px;font-weight:600;color:var(--text2);transition:.25s;white-space:nowrap}
.tab-btn:hover{color:var(--text);background:rgba(255,255,255,.04)}
.tab-btn.active{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#1a1407}
.tab-panel{display:none;animation:fade .35s ease}
.tab-panel.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.cn-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.cn-card{display:flex;flex-direction:column;background:linear-gradient(180deg,var(--card),var(--card2));border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:.3s;position:relative}
.cn-card:hover{border-color:rgba(212,169,74,.4);transform:translateY(-3px);box-shadow:var(--shadow)}
.cn-tag{font-size:11px;font-weight:700;color:var(--gold2);background:var(--gold-soft);padding:4px 10px;border-radius:20px;align-self:flex-start;margin-bottom:12px}
.cn-card h4{font-size:16.5px;font-weight:700;margin-bottom:8px}
.cn-card p{font-size:13.5px;color:var(--text2);margin-bottom:16px}
.cn-more{margin-top:auto;font-size:13px;color:var(--gold);font-weight:600}
.cn-card:hover .cn-more{color:var(--gold2)}

.cn-cta{margin-top:48px;background:linear-gradient(135deg,rgba(212,169,74,.1),rgba(212,169,74,.03));border:1px solid rgba(212,169,74,.25);border-radius:18px;padding:32px 36px;display:flex;align-items:center;gap:36px;flex-wrap:wrap}
.cn-cta-left{flex:1;min-width:240px}
.cn-cta-left h3{font-size:22px;font-weight:800;margin-bottom:6px}
.cn-cta-left p{font-size:14px;color:var(--text2)}
.cn-cta-stats{display:flex;gap:36px;flex-wrap:wrap}
.cn-cta-stats div{display:flex;flex-direction:column;align-items:flex-start}
.cn-cta-stats b{font-size:26px;font-weight:800;color:var(--gold)}
.cn-cta-stats span{color:var(--gold);font-weight:700}
.cn-cta-stats label{font-size:12px;color:var(--text3)}

/* ═════════ FAQ ═════════ */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.25s}
.faq-item.open{border-color:rgba(212,169,74,.35)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;font-size:16px;font-weight:600;text-align:left;color:var(--text)}
.faq-ico{font-size:22px;color:var(--gold);transition:.3s}
.faq-item.open .faq-ico{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 24px 22px;color:var(--text2);font-size:14.5px}
.faq-item.open .faq-a{max-height:300px}

/* ═════════ 页脚 ═════════ */
.footer{background:#070b18;border-top:1px solid var(--line);padding:64px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;gap:36px;margin-bottom:44px}
.foot-col h5{font-size:14px;font-weight:700;color:var(--gold2);margin-bottom:16px;letter-spacing:.5px}
.foot-col a{display:block;font-size:13.5px;color:var(--text2);margin-bottom:10px;transition:.2s}
.foot-col a:hover{color:var(--gold)}
.foot-brand p{margin:16px 0;font-size:13.5px;color:var(--text2);max-width:320px}
.foot-social{display:flex;gap:10px}
.foot-social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.05);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text2);margin:0}
.foot-social a:hover{background:var(--gold);color:#1a1407;border-color:var(--gold)}
.foot-col p{font-size:13.5px;color:var(--text2);line-height:2}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:24px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text3);flex-wrap:wrap}
.foot-legal{display:flex;gap:20px}
.foot-legal a:hover{color:var(--gold)}

/* ═════════ 下载弹窗 ═════════ */
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;background:rgba(3,6,15,.7);backdrop-filter:blur(6px);padding:20px}
.modal.show{display:flex;animation:fade .25s ease}
.modal-box{background:linear-gradient(180deg,var(--card),var(--card2));border:1px solid var(--line2);border-radius:18px;padding:36px 32px;text-align:center;max-width:420px;width:100%;position:relative;box-shadow:var(--shadow)}
.modal-close{position:absolute;top:14px;right:18px;font-size:26px;color:var(--text3);line-height:1}
.modal-close:hover{color:var(--text)}
.modal-icon{font-size:42px;margin-bottom:12px}
.modal-box h3{font-size:20px;font-weight:700;margin-bottom:8px}
.modal-box>p{font-size:14px;color:var(--text2)}
.modal-progress{height:8px;background:rgba(255,255,255,.08);border-radius:10px;margin:20px 0 14px;overflow:hidden}
.modal-bar{height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--gold2));border-radius:10px;transition:width .3s}
.modal-info{display:flex;justify-content:space-between;font-size:12.5px;color:var(--text3)}
.modal-info b{color:var(--text2);font-weight:600}

/* ═════════ 滚动入场动画 ═════════ */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ═════════ 响应式 ═════════ */
@media (max-width:1024px){
  .hero h1{font-size:42px}
  .dl-grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:repeat(3,1fr);gap:28px}
  .foot-brand{grid-column:1/-1}
}
@media (max-width:768px){
  .top-bar-inner{height:auto;padding:6px 0;flex-direction:column;gap:4px;align-items:flex-start}
  .top-bar-text{font-size:11.5px}
  .nav-toggle{display:flex}
  .nav-links{position:fixed;top:102px;left:0;right:0;flex-direction:column;background:rgba(11,16,32,.97);backdrop-filter:blur(12px);padding:24px;border-bottom:1px solid var(--line);gap:20px;transform:translateY(-150%);transition:.35s;align-items:flex-start}
  .nav-links.open{transform:none}
  .hero{padding:40px 0 52px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:34px}
  .hero-stats{gap:26px;margin-top:34px}
  .h-stat b{font-size:25px}
  .section{padding:60px 0}
  .sec-head h2{font-size:28px}
  .dl-grid{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:1fr}
  .cn-grid{grid-template-columns:1fr}
  .cn-cta{flex-direction:column;align-items:flex-start;gap:22px}
  .cn-cta-stats{gap:26px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:24px}
  .foot-brand{grid-column:1/-1}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .tab-btn{flex:1 1 45%;min-width:0;font-size:13px;padding:10px}
}
@media (max-width:420px){
  .container{padding:0 16px}
  .hero h1{font-size:29px}
  .hero-actions .btn{flex:1;justify-content:center}
  .foot-grid{grid-template-columns:1fr}
}