/* ============================================================
   WeTrade 外汇中文站  —  样式表
   ============================================================ */

:root{
  --brand:#FF6A00;
  --brand-hi:#FF9A3D;
  --brand-deep:#E2480C;
  --glow-a:#FF6A00;
  --glow-b:#FF2E6E;

  --ink:#0C1119;
  --ink-soft:#141B26;
  --ink-line:rgba(255,255,255,.08);

  --paper:#FFFFFF;
  --paper-soft:#F6F7F9;
  --line:#E7EAF0;
  --text:#19202E;
  --text-dim:#5C6677;
  --invert:#EEF1F6;
  --invert-dim:#94A0B4;

  --radius:14px;
  --radius-sm:10px;
  --wrap:1180px;

  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC",sans-serif;

  --shadow:0 18px 44px -22px rgba(15,23,42,.28);
  --shadow-sm:0 8px 22px -14px rgba(15,23,42,.30);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  color:var(--text);
  background:var(--paper);
  line-height:1.75;
  font-size:16.5px;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}

.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:22px}

/* ---------- 通用排版 ---------- */
h1,h2,h3{line-height:1.25;letter-spacing:-.01em;font-weight:700}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.12em;
  color:var(--brand-deep);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;font-size:15.5px;border-radius:999px;
  padding:13px 26px;cursor:pointer;border:1px solid transparent;
  transition:transform .15s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand-hi),var(--brand) 55%,var(--brand-deep));
  color:#fff;box-shadow:0 12px 26px -12px rgba(255,106,0,.7);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 30px -12px rgba(255,106,0,.75)}
.btn-ghost{border-color:var(--line);background:#fff;color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep)}
.btn-ghost-dark{border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost-dark:hover{border-color:#fff;background:rgba(255,255,255,.07)}

/* ---------- 头部 ---------- */
.site-head{
  position:sticky;top:0;z-index:50;
  background:rgba(12,17,25,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--ink-line);
}
.nav{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:20px;color:#fff;letter-spacing:-.02em}
.brand img{width:30px;height:30px}
.brand span b{font-weight:800}
.brand small{display:block;font-size:11px;font-weight:500;letter-spacing:.18em;color:var(--invert-dim);margin-top:-2px}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  color:var(--invert-dim);font-size:15px;font-weight:500;
  padding:9px 14px;border-radius:8px;transition:color .15s,background .15s;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-links a.active{color:#fff}
.nav-cta{margin-left:8px}

/* 移动端菜单（纯 CSS） */
.nav-toggle,.nav-toggle-label{display:none}
@media(max-width:880px){
  .nav-links{
    position:absolute;left:0;right:0;top:68px;flex-direction:column;align-items:stretch;
    gap:0;background:var(--ink);border-bottom:1px solid var(--ink-line);
    padding:8px 14px 18px;margin-left:0;
    max-height:0;overflow:hidden;transition:max-height .3s ease;
  }
  .nav-links a{padding:13px 10px;border-radius:0;border-bottom:1px solid var(--ink-line)}
  .nav-links .nav-cta{margin:14px 0 0;padding:0}
  .nav-links .nav-cta .btn{width:100%}
  .nav-toggle:checked ~ .nav-links{max-height:420px}
  .nav-toggle-label{
    display:flex;flex-direction:column;gap:5px;margin-left:auto;
    width:42px;height:42px;align-items:center;justify-content:center;cursor:pointer;
    border:1px solid var(--ink-line);border-radius:9px;
  }
  .nav-toggle-label span{width:20px;height:2px;background:#fff;border-radius:2px;transition:.25s}
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(2){opacity:0}
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* ---------- 英雄区 ---------- */
.hero{position:relative;background:var(--ink);color:var(--invert);overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(620px 380px at 78% 18%,rgba(255,46,110,.20),transparent 60%),
    radial-gradient(720px 480px at 12% 88%,rgba(255,106,0,.26),transparent 62%);
}
.hero .wrap{position:relative;z-index:1;padding-top:84px;padding-bottom:96px}
.hero h1{font-size:clamp(32px,5.2vw,56px);color:#fff;max-width:16ch;margin:18px 0 0}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--brand-hi),var(--brand) 60%,var(--glow-b));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{margin-top:22px;max-width:54ch;font-size:18px;color:var(--invert-dim)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}

.hero-line{position:absolute;right:-40px;bottom:-10px;width:min(560px,52vw);opacity:.9;z-index:0}

/* 数据条 */
.stats{
  position:relative;z-index:1;
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--ink-line);
  border:1px solid var(--ink-line);border-radius:var(--radius);overflow:hidden;
  margin-top:54px;
}
.stats div{background:var(--ink);padding:24px 22px}
.stats b{display:block;font-size:30px;font-weight:800;color:#fff;letter-spacing:-.02em}
.stats b i{font-style:normal;color:var(--brand-hi)}
.stats span{font-size:13.5px;color:var(--invert-dim)}

/* ---------- 区块通用 ---------- */
.section{padding:88px 0}
.section.alt{background:var(--paper-soft)}
.section-head{max-width:640px}
.section-head h2{font-size:clamp(26px,3.6vw,38px);margin:14px 0 0}
.section-head p{margin-top:14px;color:var(--text-dim);font-size:17px}
.center{margin-inline:auto;text-align:center}
.center .eyebrow{justify-content:center}

/* 特性网格 */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;transition:transform .18s ease,box-shadow .2s ease,border-color .2s;
}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#fff}
.feature .ic{
  width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(255,106,0,.14),rgba(255,46,110,.12));
  color:var(--brand-deep);margin-bottom:18px;
}
.feature .ic svg{width:24px;height:24px}
.feature h3{font-size:19px}
.feature p{margin-top:10px;color:var(--text-dim);font-size:15.5px}

/* 产品卡片（首页指向产品页） */
.prod-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;transition:transform .18s,box-shadow .2s,border-color .2s;
}
.prod-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand)}
.prod-card .tag{font-size:13px;font-weight:600;color:var(--brand-deep)}
.prod-card h3{font-size:20px;margin:8px 0 8px}
.prod-card p{color:var(--text-dim);font-size:15px}
.prod-card .more{display:inline-block;margin-top:16px;font-weight:600;color:var(--brand-deep);font-size:14.5px}

/* 分栏（图文） */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split .panel{
  background:var(--ink);color:var(--invert);border-radius:var(--radius);padding:38px;
  position:relative;overflow:hidden;
}
.split .panel::before{content:"";position:absolute;inset:0;background:radial-gradient(420px 260px at 80% 10%,rgba(255,106,0,.25),transparent 60%)}
.split .panel ul{position:relative;list-style:none;display:grid;gap:16px;margin-top:8px}
.split .panel li{display:flex;gap:12px;font-size:15.5px;color:var(--invert)}
.split .panel li b{color:#fff}
.split .panel li svg{flex:none;width:22px;height:22px;color:var(--brand-hi);margin-top:2px}

/* 列表块（分页面正文） */
.lede{font-size:18.5px;color:var(--text);max-width:64ch}
.prose{max-width:none}
.prose p{color:var(--text-dim);margin-top:16px;font-size:16.5px}
.prose h2{font-size:clamp(24px,3.2vw,32px);margin-top:8px}
.prose h3{font-size:21px;margin-top:8px}

.checklist{list-style:none;display:grid;gap:14px;margin-top:8px}
.checklist li{display:flex;gap:12px;font-size:16px;color:var(--text)}
.checklist li svg{flex:none;width:22px;height:22px;color:var(--brand);margin-top:3px}

/* 数据表（账户/对比） */
.tbl{width:100%;border-collapse:collapse;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:15.5px}
.tbl th,.tbl td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line)}
.tbl thead th{background:var(--ink);color:#fff;font-weight:600}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl tbody tr:nth-child(even){background:var(--paper-soft)}
.tbl td:first-child{font-weight:600;color:var(--text)}

/* FAQ */
.faq{display:grid;gap:14px}
.faq .q{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:22px 24px}
.faq .q h3{font-size:17.5px;display:flex;gap:10px;align-items:flex-start}
.faq .q h3 i{color:var(--brand);font-style:normal;font-weight:800}
.faq .q p{margin-top:10px;color:var(--text-dim);font-size:15.5px}

/* 页面标题区（分页面） */
.page-hero{background:var(--ink);color:var(--invert);position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(620px 320px at 85% 0%,rgba(255,106,0,.22),transparent 60%)}
.page-hero .wrap{position:relative;z-index:1;padding:64px 22px}
.page-hero h1{font-size:clamp(28px,4.4vw,44px);color:#fff;margin-top:14px}
.page-hero p{margin-top:14px;max-width:56ch;color:var(--invert-dim);font-size:17px}
.crumb{font-size:13.5px;color:var(--invert-dim)}
.crumb a:hover{color:#fff}

/* 首页结尾 CTA（仅首页使用） */
.cta-band{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(560px 340px at 50% 120%,rgba(255,106,0,.30),transparent 60%)}
.cta-band .wrap{position:relative;z-index:1;padding:72px 22px;text-align:center}
.cta-band h2{font-size:clamp(26px,3.6vw,38px)}
.cta-band p{margin:14px auto 28px;max-width:52ch;color:var(--invert-dim);font-size:17px}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink);color:var(--invert-dim);padding:64px 0 26px;border-top:1px solid var(--ink-line)}
.foot-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px}
.foot-cols h4{color:#fff;font-size:15px;font-weight:600;letter-spacing:.04em;margin-bottom:18px}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:18px;margin-bottom:14px}
.foot-brand img{width:26px;height:26px}
.foot-cols p{font-size:14.5px;line-height:1.85}
.foot-list{list-style:none;display:grid;gap:11px}
.foot-list li{font-size:14.5px;color:var(--invert-dim)}
.foot-contact{display:grid;gap:12px}
.foot-contact li{display:flex;gap:10px;font-size:14.5px;align-items:flex-start}
.foot-contact svg{flex:none;width:18px;height:18px;color:var(--brand-hi);margin-top:3px}
.foot-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--ink-line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:var(--invert-dim);
}
.risk{margin-top:24px;font-size:12.5px;line-height:1.8;color:#6E7A8E;max-width:none}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:30px}
  .foot-cols{grid-template-columns:1fr 1fr;gap:34px}
  .foot-cols .col-intro{grid-column:1/-1}
}
@media(max-width:680px){
  body{font-size:16px}
  .section{padding:64px 0}
  .stats{grid-template-columns:repeat(2,1fr)}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .foot-cols{grid-template-columns:1fr}
  .hero-line{display:none}
  .hero .wrap{padding-top:56px;padding-bottom:64px}
}