:root{
  --bg:#f4f7fb;
  --surface:#ffffff;
  --surface-2:#f7f9fc;
  --text:#101828;
  --muted:#667085;
  --line:#e4e7ec;
  --brand:#2563eb;
  --brand-strong:#1d4ed8;
  --success:#067647;
  --danger:#b42318;
  --warning:#b54708;
  --shadow:0 12px 35px rgba(16,24,40,.08);
  --radius:16px;
  color-scheme:light;
}
html[data-theme="dark"]{
  --bg:#0b1220;
  --surface:#111827;
  --surface-2:#172033;
  --text:#f8fafc;
  --muted:#a9b3c4;
  --line:#27344a;
  --brand:#60a5fa;
  --brand-strong:#93c5fd;
  --success:#4ade80;
  --danger:#fb7185;
  --warning:#fbbf24;
  --shadow:0 16px 40px rgba(0,0,0,.3);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:sans-serif;
  line-height:1.65;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
button,input,textarea,select{font:inherit}
.container{width:min(1120px,calc(100% - 28px));margin:auto}
.site-header{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--surface) 92%,transparent);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{
  min-height:66px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--text);font-size:20px}
.brand-mark{
  display:grid;place-items:center;width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),#7c3aed);color:#fff;font-weight:900;
}
.nav-links{display:flex;align-items:center;gap:20px}
.nav-links a{color:var(--text);font-size:14px;font-weight:650}
.nav-actions{display:flex;align-items:center;gap:8px}
.icon-btn,.menu-btn{
  width:40px;height:40px;border:1px solid var(--line);border-radius:11px;
  background:var(--surface);color:var(--text);cursor:pointer;
}
.menu-btn{display:none}
.market-strip{border-bottom:1px solid var(--line);background:var(--surface)}
.market-inner{
  min-height:42px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;font-size:13px;color:var(--muted);
}
.status{display:inline-flex;align-items:center;gap:8px;font-weight:750}
.status-dot{width:9px;height:9px;border-radius:50%;background:var(--muted)}
.status.open{color:var(--success)}
.status.open .status-dot{background:var(--success);box-shadow:0 0 0 5px color-mix(in srgb,var(--success) 15%,transparent)}
.status.preopen{color:var(--warning)}
.status.preopen .status-dot{background:var(--warning)}
.status.closed{color:var(--danger)}
.status.closed .status-dot{background:var(--danger)}
.hero{padding:48px 0 26px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);gap:28px;align-items:center}
.eyebrow{color:var(--brand);font-weight:800;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
.hero h1{font-size:clamp(34px,5vw,58px);line-height:1.05;margin:10px 0 16px;letter-spacing:-.04em}
.hero p{font-size:18px;color:var(--muted);margin:0;max-width:720px}
.hero-card,.panel,.content-card,.guide-card,.ad-placeholder{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
}
.hero-card{padding:22px}
.mini-stat{display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px solid var(--line)}
.mini-stat:last-child{border-bottom:0}
.section{padding:28px 0}
.section-title{margin:0 0 8px;font-size:30px;letter-spacing:-.025em}
.section-lead{margin:0 0 20px;color:var(--muted)}
.calculator{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:18px;padding:18px;
}
.panel{padding:16px;box-shadow:none}
.panel h2{margin:0 0 14px;font-size:18px}
.input-row{
  display:grid;grid-template-columns:104px minmax(0,1fr);
  align-items:center;gap:10px;margin-bottom:10px;
}
.input-row label{font-weight:750;font-size:14px}
input,textarea,select{
  width:100%;border:1px solid var(--line);background:var(--surface);
  color:var(--text);border-radius:10px;padding:11px 12px;outline:none;
}
input:focus,textarea:focus,select:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 15%,transparent)}
.results{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:6px 13px}
.result-row{display:grid;grid-template-columns:1fr auto;gap:12px;padding:11px 0;border-bottom:1px solid var(--line)}
.result-row:last-child{border-bottom:0}
.result-row strong{white-space:nowrap}
.error{min-height:20px;color:var(--danger);font-size:13px;margin-top:4px}
.trade-type{font-size:13px;color:var(--muted);margin-top:10px}
.notice{
  padding:14px 16px;border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:12px;background:var(--surface-2);color:var(--muted)
}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.guide-card{padding:20px;box-shadow:none}
.guide-card h3{margin:0 0 8px}
.guide-card p{margin:0;color:var(--muted)}
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.step{padding:18px;background:var(--surface);border:1px solid var(--line);border-radius:14px}
.step-num{width:32px;height:32px;display:grid;place-items:center;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;margin-bottom:10px}
.content-card{padding:clamp(20px,4vw,42px)}
.content-card h1{font-size:clamp(30px,5vw,46px);line-height:1.1;margin-top:0}
.content-card h2{margin-top:32px}
.content-card p,.content-card li{color:var(--muted)}
.content-card ul,.content-card ol{padding-left:22px}
.meta{color:var(--muted);font-size:14px;margin-bottom:24px}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:12px;border:1px solid var(--line);text-align:left}
th{background:var(--surface-2)}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{font-weight:750;cursor:pointer}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:20px}
.contact-card{padding:20px;background:var(--surface-2);border:1px solid var(--line);border-radius:14px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;min-height:44px;
  padding:0 16px;border:0;border-radius:10px;background:var(--brand);color:#fff;
  font-weight:750;cursor:pointer;text-decoration:none
}
.btn:hover{background:var(--brand-strong);text-decoration:none}
.ad-placeholder{
  min-height:90px;display:grid;place-items:center;color:var(--muted);
  font-size:12px;box-shadow:none;border-style:dashed
}
.site-footer{margin-top:46px;border-top:1px solid var(--line);background:var(--surface)}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:24px;padding:38px 0}
.footer-title{font-weight:800;margin-bottom:10px}
.footer-links{display:grid;gap:8px}
.footer-links a{color:var(--muted);font-size:14px}
.footer-note{border-top:1px solid var(--line);padding:18px 0;color:var(--muted);font-size:13px}
.cookie-banner{
  position:fixed;left:14px;right:14px;bottom:14px;z-index:100;
  display:none;max-width:760px;margin:auto;padding:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)
}
.cookie-banner.show{display:flex;align-items:center;justify-content:space-between;gap:16px}
.cookie-actions{display:flex;gap:8px;flex-shrink:0}
.btn.secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--line)}
@media(max-width:820px){
  .nav-links{
    display:none;position:absolute;top:66px;left:14px;right:14px;padding:14px;
    background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)
  }
  .nav-links.open{display:grid}
  .menu-btn{display:block}
  .hero-grid,.contact-grid{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .container{width:min(100% - 14px,1120px)}
  .market-inner{font-size:11px}
  .hero{padding-top:28px}
  .hero-card{display:none}
  .calculator{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:7px;padding:8px}
  .panel{padding:8px}
  .panel h2{font-size:14px;margin-bottom:9px}
  .input-row{grid-template-columns:62px minmax(0,1fr);gap:5px;margin-bottom:7px}
  .input-row label{font-size:11px}
  input{padding:8px 6px;font-size:14px}
  .results{padding:3px 7px}
  .result-row{gap:4px;padding:9px 0;font-size:11px}
  .trade-type,.error{font-size:10px}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cookie-banner.show{display:block}
  .cookie-actions{margin-top:12px}
}