/* ============================================================
   VT Markets 外汇中文站 — 全站样式
   设计语言：近黑深蓝底 + 品牌红 · 切角几何 · 交易终端式罗列
   ============================================================ */

:root{
  --ink:#0A0E16;
  --ink-soft:#0F1626;
  --ink-card:#151D2E;
  --ink-line:#27314a;
  --red:#E4002B;
  --red-700:#BB0023;
  --paper:#FFFFFF;
  --mist:#F4F6FA;
  --mist-2:#EBEFF6;
  --text:#10151F;
  --muted:#5B6675;
  --muted-soft:#8A93A3;
  --line:#E5E9F0;
  --maxw:1180px;
  --radius:14px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
          "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC",
          "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;
}

*,*::before,*::after{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:16px;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-size:.95rem;font-weight:600;line-height:1;
  padding:.85em 1.6em;border-radius:8px;border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
  white-space:nowrap;
}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:var(--red-700)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#000}
.btn-lg{padding:1.05em 2.1em;font-size:1.02rem}

/* ============================================================
   顶部导航
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--ink);
  border-bottom:1px solid var(--ink-line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}

.brand{display:flex;align-items:center;gap:11px;font-weight:700;color:#fff}
.brand svg{width:34px;height:34px;flex:none}
.brand .b-name{font-size:1.12rem;letter-spacing:.02em}
.brand .b-name b{color:var(--red);font-weight:800}
.brand .b-sub{
  font-size:.66rem;color:var(--muted-soft);font-weight:500;
  letter-spacing:.18em;display:block;margin-top:1px;
}

.nav-links{display:flex;align-items:center;gap:6px;list-style:none}
.nav-links a{
  display:block;color:#D7DCE6;font-size:.95rem;font-weight:500;
  padding:.55em .95em;border-radius:7px;transition:color .15s,background .15s;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav-links a.active{color:#fff}
.nav-links a.active::after{
  content:"";display:block;height:2px;width:18px;margin:3px auto 0;
  background:var(--red);border-radius:2px;
}

.nav-cta{display:flex;align-items:center;gap:14px}

/* 移动端菜单：纯 CSS 复选框开关 */
.nav-toggle{display:none}
.burger{
  display:none;flex-direction:column;gap:5px;cursor:pointer;
  padding:8px;border-radius:8px;
}
.burger span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.25s}

@media(max-width:920px){
  .burger{display:flex}
  .nav-links{
    position:absolute;left:0;right:0;top:70px;flex-direction:column;align-items:stretch;
    gap:0;background:var(--ink-soft);border-bottom:1px solid var(--ink-line);
    padding:8px 16px 18px;
    max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease;
  }
  .nav-links a{padding:.95em .6em;border-bottom:1px solid rgba(255,255,255,.06)}
  .nav-links a.active::after{margin:6px 0 0}
  .nav-toggle:checked ~ .nav-links{max-height:520px;padding-top:8px}
  .nav-toggle:checked ~ .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle:checked ~ .burger span:nth-child(2){opacity:0}
  .nav-toggle:checked ~ .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav-cta .btn-ghost{display:none}
}

/* ============================================================
   首页 Hero
   ============================================================ */
.hero{
  position:relative;background:var(--ink);color:#fff;overflow:hidden;
  padding:88px 0 96px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 88% 8%, rgba(228,0,43,.22), transparent 55%),
    radial-gradient(80% 70% at 0% 100%, rgba(40,60,110,.30), transparent 60%);
}
.hero::after{
  content:"";position:absolute;top:0;bottom:0;right:0;width:46%;
  background:linear-gradient(135deg,transparent 0 38%, rgba(228,0,43,.08) 38% 40%, transparent 40%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:.78rem;letter-spacing:.16em;color:#fff;
  background:rgba(228,0,43,.16);border:1px solid rgba(228,0,43,.4);
  padding:.5em 1em;border-radius:999px;margin-bottom:26px;
}
.hero-eyebrow i{width:7px;height:7px;background:var(--red);border-radius:50%;display:block}
.hero h1{
  font-size:clamp(2.3rem,5.4vw,4rem);line-height:1.12;font-weight:800;
  letter-spacing:-.01em;max-width:16ch;
}
.hero h1 em{color:var(--red);font-style:normal}
.hero p.lead{
  margin-top:22px;font-size:clamp(1rem,1.6vw,1.18rem);color:#C3CAD6;
  max-width:46ch;line-height:1.85;
}
.hero-actions{margin-top:38px;display:flex;flex-wrap:wrap;gap:14px}
.hero-note{margin-top:20px;font-size:.82rem;color:var(--muted-soft)}

/* 交易终端式静态产品板（首页签名元素） */
.ticker{
  position:relative;z-index:2;margin-top:56px;
  border:1px solid var(--ink-line);border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,0));
  overflow:hidden;
}
.ticker-head{
  display:flex;align-items:center;gap:10px;
  padding:13px 18px;border-bottom:1px solid var(--ink-line);
  font-size:.8rem;letter-spacing:.14em;color:var(--muted-soft);
}
.ticker-head i{width:8px;height:8px;border-radius:50%;background:var(--red);display:block}
.ticker-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
}
.ticker-grid .cell{
  padding:16px 18px;border-right:1px solid var(--ink-line);border-top:1px solid var(--ink-line);
}
.ticker-grid .cell:nth-child(4n){border-right:none}
.ticker-grid .cell .sym{
  font-family:"SF Mono",ui-monospace,"Cascadia Mono","Roboto Mono",Menlo,Consolas,monospace;
  font-size:.98rem;font-weight:600;color:#fff;letter-spacing:.04em;
}
.ticker-grid .cell .name{font-size:.78rem;color:var(--muted-soft);margin-top:4px}
.ticker-grid .cell .tag{
  display:inline-block;margin-top:9px;font-size:.7rem;color:#E9B9C2;
  border:1px solid rgba(228,0,43,.45);border-radius:5px;padding:.2em .55em;
}
@media(max-width:780px){
  .ticker-grid{grid-template-columns:repeat(2,1fr)}
  .ticker-grid .cell:nth-child(4n){border-right:1px solid var(--ink-line)}
  .ticker-grid .cell:nth-child(2n){border-right:none}
}

/* ============================================================
   通用区块
   ============================================================ */
section{padding:78px 0}
.sec-light{background:var(--paper)}
.sec-mist{background:var(--mist)}
.sec-ink{background:var(--ink);color:#fff}

.sec-head{max-width:60ch;margin-bottom:46px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  font-size:.78rem;font-weight:600;letter-spacing:.16em;color:var(--red);
  display:block;margin-bottom:14px;
}
.sec-ink .eyebrow{color:#FF6B85}
h2.sec-title{
  font-size:clamp(1.7rem,3.4vw,2.5rem);line-height:1.25;font-weight:800;
  letter-spacing:-.005em;
}
.sec-head p{margin-top:16px;color:var(--muted);font-size:1.02rem}
.sec-ink .sec-head p{color:#AEB7C5}

/* ---------- 优势卡片 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;position:relative;transition:border-color .2s,transform .2s,box-shadow .2s;
}
.feature::before{
  content:"";position:absolute;left:0;top:26px;width:3px;height:30px;
  background:var(--red);border-radius:0 3px 3px 0;
}
.feature:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(16,21,31,.08);border-color:#d7dde7}
.feature .ic{width:44px;height:44px;margin-bottom:16px}
.feature h3{font-size:1.18rem;font-weight:700;margin-bottom:9px}
.feature p{color:var(--muted);font-size:.95rem;line-height:1.8}

/* ---------- 数据指标 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat .num{
  font-size:clamp(2rem,4vw,3rem);font-weight:800;color:#fff;line-height:1;
  letter-spacing:-.02em;
}
.stat .num span{color:var(--red)}
.stat .lab{margin-top:12px;color:#AEB7C5;font-size:.92rem}

/* ---------- 平台 / 列表卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card-grid.cols-2{grid-template-columns:repeat(2,1fr)}
.card{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);
  padding:28px 26px;transition:border-color .2s,box-shadow .2s,transform .2s;
}
.card:hover{border-color:#d7dde7;box-shadow:0 12px 30px rgba(16,21,31,.07);transform:translateY(-2px)}
.card .kicker{
  font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
  font-size:.78rem;letter-spacing:.1em;color:var(--red);font-weight:600;
}
.card h3{font-size:1.2rem;font-weight:700;margin:8px 0 10px}
.card p{color:var(--muted);font-size:.94rem;line-height:1.8}
.card ul{list-style:none;margin-top:14px}
.card ul li{
  position:relative;padding-left:20px;color:var(--text);font-size:.92rem;
  margin:8px 0;line-height:1.7;
}
.card ul li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;
  background:var(--red);border-radius:2px;transform:rotate(45deg);
}

/* ---------- 三步流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:s}
.step{position:relative;padding-top:8px}
.step .no{
  font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
  font-size:.95rem;color:var(--red);font-weight:700;letter-spacing:.1em;
}
.step h3{font-size:1.22rem;font-weight:700;margin:10px 0 8px}
.step p{color:#AEB7C5;font-size:.95rem;line-height:1.8}
.step .bar{height:2px;background:linear-gradient(90deg,var(--red),transparent);margin-top:18px}

/* ============================================================
   分页头部 + 正文排版
   ============================================================ */
.page-hero{
  background:var(--ink);color:#fff;position:relative;overflow:hidden;
  padding:64px 0 56px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(90% 120% at 92% 0%,rgba(228,0,43,.18),transparent 55%);
}
.page-hero .wrap{position:relative;z-index:2}
.crumb{font-size:.82rem;color:var(--muted-soft);margin-bottom:16px}
.crumb a:hover{color:#fff}
.crumb span{color:#fff}
.page-hero h1{font-size:clamp(1.9rem,4vw,2.9rem);font-weight:800;line-height:1.2;letter-spacing:-.01em}
.page-hero p{margin-top:16px;color:#C3CAD6;max-width:56ch;font-size:1.05rem}

.prose{max-width:760px}
.prose h2{font-size:1.5rem;font-weight:700;margin:40px 0 14px;letter-spacing:-.005em}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.15rem;font-weight:700;margin:26px 0 8px}
.prose p{color:#39414f;margin:12px 0;line-height:1.9}
.prose ul{margin:14px 0 14px 0;padding-left:0;list-style:none}
.prose ul li{position:relative;padding-left:22px;margin:9px 0;color:#39414f;line-height:1.85}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;
  background:var(--red);border-radius:2px;transform:rotate(45deg);
}
.prose strong{color:var(--text);font-weight:700}

/* 对照表 */
.spec-table{width:100%;border-collapse:collapse;margin:22px 0;font-size:.94rem}
.spec-table th,.spec-table td{
  text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);
}
.spec-table thead th{
  background:var(--ink);color:#fff;font-weight:600;font-size:.9rem;
  border-bottom:none;
}
.spec-table thead th:first-child{border-radius:8px 0 0 0}
.spec-table thead th:last-child{border-radius:0 8px 0 0}
.spec-table tbody tr:hover{background:var(--mist)}
.spec-table td:first-child{font-weight:600;color:var(--text)}
.spec-table .hl{color:var(--red);font-weight:700}

/* 信息小卡（分页内不含 CTA） */
.note-card{
  background:var(--mist);border:1px solid var(--line);border-left:3px solid var(--red);
  border-radius:10px;padding:22px 24px;margin:30px 0;
}
.note-card h3{font-size:1.05rem;font-weight:700;margin-bottom:6px}
.note-card p{color:var(--muted);font-size:.93rem;margin:0;line-height:1.8}

/* ============================================================
   页脚（三列）
   ============================================================ */
.site-footer{background:var(--ink);color:#C3CAD6;padding:64px 0 0}
.foot-cols{
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;
  padding-bottom:48px;border-bottom:1px solid var(--ink-line);
}
.foot-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px;color:#fff;font-weight:700}
.foot-brand svg{width:32px;height:32px}
.foot-brand b{color:var(--red);font-weight:800}
.foot-col h4{
  color:#fff;font-size:.82rem;letter-spacing:.14em;font-weight:600;
  margin-bottom:18px;text-transform:none;
}
.foot-col p{font-size:.92rem;line-height:1.9;color:#9AA3B2;max-width:38ch}
.foot-col ul{list-style:none}
.foot-col ul li{font-size:.92rem;color:#9AA3B2;padding:6px 0;line-height:1.6}
.foot-contact li{display:flex;gap:9px;align-items:flex-start}
.foot-contact li span{color:#6E7889;flex:none;min-width:3.2em}
.foot-risk{padding:26px 0;border-bottom:1px solid var(--ink-line)}
.foot-risk p{font-size:.78rem;color:#727C8C;line-height:1.85}
.foot-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  flex-wrap:wrap;padding:22px 0 30px;font-size:.82rem;color:#6E7889;
}

@media(max-width:920px){
  .feature-grid,.card-grid,.card-grid.cols-2,.steps,.stats{grid-template-columns:1fr 1fr}
  .stat .num{font-size:2.2rem}
}
@media(max-width:640px){
  section{padding:56px 0}
  .hero{padding:60px 0 64px}
  .feature-grid,.card-grid,.card-grid.cols-2,.steps,.stats,.foot-cols{grid-template-columns:1fr}
  .foot-cols{gap:34px}
  .hero-actions .btn{flex:1 1 auto}
}

/* 可访问性：键盘焦点 + 减弱动效 */
a:focus-visible,.btn:focus-visible,.burger:focus-visible{
  outline:2px solid var(--red);outline-offset:3px;border-radius:6px;
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto!important}
}