@charset "utf-8";
/* =====================================================================
   欧易（OKX）专题站 · 公共样式
   1 视觉规范变量 / 2 按钮 / 3 顶部导航 / 4 Hero / 5 数据条 / 6 区块标题
   7 产品卡片 / 8 安全（浅灰模块） / 9 优势列表 / 10 下载·注册 CTA
   11 FAQ / 12 页脚 / 13 面包屑 / 14 响应式
   ===================================================================== */

/* ===== 1. 视觉规范变量 ===== */
:root{
  --gold:#F0B90B;
  --gold-2:#FFD24A;
  --gold-d:#C99A06;
  --bg:#0B0E11;
  --bg-soft:#12171D;
  --bg-card:#151A21;
  --bg-card-2:#1B222B;
  --bg-gray:#F4F6F8;
  --text:#EAECEF;
  --text-2:#B7BDC6;
  --text-dim:#848E9C;
  --dark:#0B0E11;
  --line:#242C36;
  --line-2:#2E3742;
  --line-light:#E4E7EB;
  --ok:#2EBD85;
  --r-s:10px;
  --r-m:14px;
  --r-l:22px;
  --wrap:1180px;
  --shadow:0 18px 40px rgba(0,0,0,.38);
  --shadow-s:0 6px 18px rgba(0,0,0,.25);
  --nav-h:64px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

/* ===== 1.1 基础重置 ===== */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
::selection{background:var(--gold);color:#0B0E11}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
.svg-sprite{position:absolute;width:0;height:0;overflow:hidden}
.ic{width:22px;height:22px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.ic-lg{width:26px;height:26px}
.mt-0{margin-top:0}
.gold{color:var(--gold)}
.dim{color:var(--text-dim)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ===== 2. 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-s);
  font-size:16px;font-weight:600;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
}
.btn .ic{width:18px;height:18px}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px}
.btn-gold{background:linear-gradient(135deg,var(--gold-2),var(--gold));color:#151008;box-shadow:0 8px 22px rgba(240,185,11,.22)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(240,185,11,.34)}
.btn-line{border:1px solid var(--line-2);color:var(--text);background:rgba(255,255,255,.03)}
.btn-line:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-2px)}
.btn-light{background:#0B0E11;color:#fff}
.btn-light:hover{transform:translateY(-2px);background:#1b2028}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* ===== 3. 顶部导航 ===== */
.nav{
  position:sticky;top:0;z-index:60;height:var(--nav-h);
  background:rgba(11,14,17,.86);backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:border-color .2s,background .2s;
}
.nav.is-scrolled{border-bottom-color:var(--line);background:rgba(11,14,17,.96)}
.nav-inner{display:flex;align-items:center;gap:24px;height:var(--nav-h)}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:.5px}
.logo-mark{height:26px;width:auto;display:block;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  padding:8px 12px;border-radius:8px;font-size:15px;color:var(--text-2);
  transition:color .18s,background .18s;
}
.nav-links a:hover,.nav-links a.is-active{color:var(--gold);background:rgba(240,185,11,.08)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:8px;border:1px solid var(--line-2)}
.nav-toggle span{display:block;width:18px;height:2px;margin:4px auto;background:var(--text);border-radius:2px;transition:transform .2s,opacity .2s}
.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ===== 4. Hero ===== */
.hero{position:relative;padding:56px 0 64px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(720px 380px at 78% 8%,rgba(240,185,11,.16),transparent 60%),
    radial-gradient(600px 320px at 12% 90%,rgba(46,189,133,.10),transparent 62%);
}
.hero .wrap{position:relative;z-index:1}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.badge{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border:1px solid rgba(240,185,11,.35);border-radius:999px;
  background:rgba(240,185,11,.08);color:var(--gold);font-size:13px;font-weight:600;
}
.hero h1{font-size:40px;margin:18px 0 16px;line-height:1.28}
.hero h1 em{font-style:normal;color:var(--gold)}
.lead{font-size:17px;color:var(--text-2);max-width:620px}
.hero-btns{margin-top:28px}
.hero-tips{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px}
.hero-tips li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--text-2)}
.hero-tips .ic{width:17px;height:17px;color:var(--ok)}
/* 手机模型 */
.hero-phone{display:flex;justify-content:center}
.phone{
  width:290px;padding:11px;border-radius:42px;border:1px solid #2f3742;
  background:linear-gradient(160deg,#2a313b,#131920);box-shadow:var(--shadow);
}
.phone-screen{
  border-radius:32px;min-height:540px;padding:20px 18px;
  background:linear-gradient(180deg,#111721,#0B0E11);
}
.ph-top{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-dim)}
.ph-brand{display:flex;align-items:center;gap:6px;font-weight:700;color:var(--gold);font-size:14px}
.ph-card{
  margin-top:18px;padding:16px;border-radius:16px;border:1px solid var(--line);
  background:linear-gradient(150deg,rgba(240,185,11,.14),rgba(240,185,11,.02));
}
.ph-card span{font-size:12px;color:var(--text-dim)}
.ph-card b{display:block;font-size:24px;margin-top:6px}
.ph-chart{display:flex;align-items:flex-end;gap:6px;height:78px;margin-top:18px}
.ph-chart i{flex:1;border-radius:4px 4px 0 0;background:linear-gradient(180deg,var(--gold),rgba(240,185,11,.18))}
.ph-list{margin-top:20px;display:grid;gap:10px}
.ph-row{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-radius:12px;background:var(--bg-card);border:1px solid var(--line);font-size:13px}
.ph-row small{color:var(--text-dim)}
.ph-row .up{color:var(--ok);font-weight:600}

/* ===== 5. 数据条 ===== */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-soft)}
.stats-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line)}
.stat{background:var(--bg-soft);padding:26px 18px;text-align:center}
.stat b{display:block;font-size:30px;color:var(--gold);letter-spacing:.5px}
.stat span{display:block;margin-top:4px;font-size:14px;color:var(--text-dim)}
.stats-note{padding:12px 0 14px;text-align:center;font-size:12.5px;color:var(--text-dim)}

/* ===== 6. 区块标题 ===== */
.sec{padding:76px 0}
.sec-gray{background:var(--bg-gray);color:var(--dark)}
.sec-head{max-width:760px;margin:0 auto 38px;text-align:center}
.sec-head h2{font-size:32px}
.sec-head h2 em{font-style:normal;color:var(--gold)}
.sec-head p{margin-top:14px;color:var(--text-dim);font-size:16px}
.sec-gray .sec-head p{color:#5C6672}
.sec-head .kicker{display:block;font-size:13px;letter-spacing:2px;text-transform:uppercase;color:var(--gold);font-weight:700;margin-bottom:10px}

/* ===== 7. 产品卡片 ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{
  padding:26px;border-radius:var(--r-m);border:1px solid var(--line);
  background:linear-gradient(180deg,var(--bg-card),var(--bg-soft));
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(240,185,11,.4);box-shadow:var(--shadow-s)}
.card .ic{color:var(--gold)}
.card h3{font-size:19px;margin:14px 0 10px}
.card p{font-size:14.8px;color:var(--text-dim)}
.card ul{margin-top:14px;display:grid;gap:8px}
.card ul li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2)}
.card ul li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--gold)}
.tag{display:inline-block;margin-bottom:12px;padding:3px 10px;border-radius:6px;font-size:12px;background:rgba(240,185,11,.12);color:var(--gold)}

/* ===== 8. 安全（浅灰模块） ===== */
.sec-gray .card{background:#fff;border-color:var(--line-light);box-shadow:0 6px 18px rgba(16,24,40,.05)}
.sec-gray .card:hover{border-color:rgba(240,185,11,.6);box-shadow:0 12px 26px rgba(16,24,40,.09)}
.sec-gray .card h3{color:var(--dark)}
.sec-gray .card p,.sec-gray .card ul li{color:#5C6672}
.sec-gray .card .ic{color:var(--gold-d)}
.sec-gray .card ul li::before{background:var(--gold-d)}
.sec-gray .tag{background:rgba(240,185,11,.16);color:#8A6D05}

/* ===== 9. 优势列表 ===== */
.adv{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.adv-item{
  display:flex;gap:16px;padding:22px;border-radius:var(--r-m);
  border:1px solid var(--line);background:var(--bg-soft);
}
.adv-num{
  flex:none;width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:rgba(240,185,11,.12);color:var(--gold);font-weight:800;font-size:16px;
}
.adv-item h3{font-size:17px;margin-bottom:6px}
.adv-item p{font-size:14.6px;color:var(--text-dim)}

/* ===== 10. 下载 / 注册 CTA ===== */
.cta{padding:76px 0;background:
  radial-gradient(900px 420px at 50% 0%,rgba(240,185,11,.12),transparent 62%),
  var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-box{
  display:grid;grid-template-columns:1fr 380px;gap:36px;align-items:center;
  padding:38px;border-radius:var(--r-l);border:1px solid var(--line-2);
  background:linear-gradient(160deg,var(--bg-card-2),var(--bg-soft));box-shadow:var(--shadow);
}
.cta-box h2{font-size:28px}
.cta-box .lead{margin-top:12px;font-size:15.6px}
.tabs{display:flex;gap:8px;margin:22px 0 18px;flex-wrap:wrap}
.tab{
  padding:8px 16px;border-radius:999px;font-size:14px;font-weight:600;
  border:1px solid var(--line-2);color:var(--text-2);transition:.18s;
}
.tab:hover{color:var(--gold);border-color:rgba(240,185,11,.5)}
.tab.is-active{background:var(--gold);border-color:var(--gold);color:#151008}
.tab-panel{display:none}
.tab-panel.is-active{display:block}
.tab-panel ol{counter-reset:s;display:grid;gap:10px}
.tab-panel ol li{counter-increment:s;position:relative;padding-left:32px;font-size:15px;color:var(--text-2)}
.tab-panel ol li::before{
  content:counter(s);position:absolute;left:0;top:4px;width:22px;height:22px;border-radius:50%;
  background:rgba(240,185,11,.14);color:var(--gold);font-size:12.5px;font-weight:700;display:grid;place-items:center;
}
.qr-box{
  padding:24px;border-radius:var(--r-m);text-align:center;
  border:1px dashed var(--line-2);background:rgba(255,255,255,.02);
}
.qr{
  width:190px;height:190px;margin:0 auto 14px;position:relative;
  border:1px solid var(--line-2);border-radius:10px;background:
    repeating-conic-gradient(#1c232c 0 25%,#0f141a 0 50%) 0 0/22px 22px;
}
.qr i{position:absolute;width:42px;height:42px;border:4px solid var(--gold);border-radius:6px}
.qr i:nth-child(1){left:12px;top:12px;border-right:0;border-bottom:0}
.qr i:nth-child(2){right:12px;top:12px;border-left:0;border-bottom:0}
.qr i:nth-child(3){left:12px;bottom:12px;border-right:0;border-top:0}
.qr b{
  position:absolute;inset:0;display:grid;place-items:center;
  background:rgba(11,14,17,.78);color:var(--text);font-size:13px;font-weight:600;
}
.qr-box p{font-size:13.5px;color:var(--text-dim)}

/* ===== 11. FAQ ===== */
.faq{max-width:900px;margin:0 auto;display:grid;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-m);background:var(--bg-soft);overflow:hidden;transition:border-color .2s}
.faq-item.is-open{border-color:rgba(240,185,11,.45)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;padding:18px 20px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-q .ic{margin-left:auto;color:var(--gold);transition:transform .25s}
.faq-item.is-open .faq-q .ic{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 20px 20px;font-size:15.2px;color:var(--text-dim)}
.faq-a-inner p+p{margin-top:10px}
.faq-a-inner ul{margin-top:10px;display:grid;gap:8px}
.faq-a-inner ul li{padding-left:18px;position:relative}
.faq-a-inner ul li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--gold)}
.more-faq{margin-top:26px;text-align:center;font-size:14px;color:var(--text-dim)}

/* ===== 12. 页脚 ===== */
.footer{padding:56px 0 28px;background:#080A0D;border-top:1px solid var(--line)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.foot-col h4{font-size:15px;margin-bottom:14px;color:var(--text)}
.foot-col a,.foot-col p{display:block;font-size:14px;color:var(--text-dim);padding:4px 0}
.foot-col a:hover{color:var(--gold)}
.foot-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;margin-bottom:12px}
.foot-bottom{margin-top:34px;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--text-dim)}
.disclaimer{margin-bottom:10px;line-height:1.7}
.to-top{
  position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;
  background:var(--gold);color:#151008;font-size:18px;font-weight:700;
  display:grid;place-items:center;opacity:0;visibility:hidden;transition:.22s;z-index:50;box-shadow:var(--shadow-s);
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-3px)}
.toast{
  position:fixed;left:50%;bottom:40px;transform:translate(-50%,20px);z-index:70;
  padding:10px 18px;border-radius:8px;background:var(--gold);color:#151008;font-size:14px;font-weight:600;
  opacity:0;pointer-events:none;transition:.25s;
}
.toast.is-show{opacity:1;transform:translate(-50%,0)}

/* ===== 12.1 步骤与表格 ===== */
.steps{counter-reset:s;display:grid;gap:14px;max-width:920px;margin:0 auto}
.steps li{position:relative;padding:20px 22px 20px 68px;border:1px solid var(--line);border-radius:var(--r-m);background:var(--bg-soft);counter-increment:s}
.steps li::before{content:counter(s);position:absolute;left:20px;top:20px;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:rgba(240,185,11,.14);color:var(--gold);font-weight:800;font-size:15px}
.steps h3{font-size:17px}
.steps p{margin-top:6px;font-size:14.6px;color:var(--text-dim)}
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-m);background:var(--bg-soft)}
.tbl{width:100%;min-width:560px;border-collapse:collapse;font-size:15px}
.tbl th,.tbl td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left}
.tbl th{color:var(--text-dim);font-weight:600;font-size:14px;background:rgba(255,255,255,.02)}
.tbl td{color:var(--text-2)}
.tbl tr:last-child td{border-bottom:0}
.tbl .hl{color:var(--gold);font-weight:600}
.note{font-size:13px;color:var(--text-dim);margin-top:12px}

/* ===== 13. 面包屑 ===== */
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-dim);margin-bottom:16px;flex-wrap:wrap}
.crumb a:hover{color:var(--gold)}
.crumb .sep{opacity:.5}

/* ===== 14. 响应式 ===== */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-phone{order:-1}
  .phone{width:260px}
  .cta-box{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;left:0;right:0;top:var(--nav-h);flex-direction:column;align-items:stretch;gap:0;
    padding:12px 20px 20px;background:rgba(11,14,17,.98);border-bottom:1px solid var(--line);
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:.22s;
  }
  .nav-open .nav-links{transform:translateY(0);opacity:1;visibility:visible}
  .nav-links a{padding:12px 6px;border-bottom:1px solid var(--line);font-size:16px}
  .nav-toggle{display:block}
  .nav-actions{margin-left:auto}
  .grid-3,.grid-4,.grid-2{grid-template-columns:repeat(2,1fr)}
  .adv{grid-template-columns:1fr}
  .stats-inner{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .hero{padding:36px 0 48px}
  .hero h1{font-size:28px}
  .lead,.hero .lead{font-size:15.5px}
  .sec{padding:54px 0}
  .sec-head h2{font-size:25px}
  .cta{padding:54px 0}
  .cta-box{padding:24px}
  .cta-box h2{font-size:23px}
  .grid-3,.grid-4,.grid-2,.foot-grid{grid-template-columns:1fr}
  .stat b{font-size:25px}
  .btn{width:100%}
  .btn-row .btn{width:100%}
  .nav-actions .btn-sm{width:auto}
}