/* ============ OKX Fee Discount — global styles ============ */
:root{
  --bg:#07090d;
  --bg-soft:#0b0f15;
  --panel:#10151d;
  --panel-2:#151c27;
  --line:#212b3b;
  --line-soft:#1a2230;
  --text:#eaeef4;
  --muted:#9aa5b5;
  --dim:#6b7686;
  --accent:#ffb020;
  --accent-2:#ff7a1a;
  --accent-ink:#1a1204;
  --good:#2fd67b;
  --bad:#ff5c5c;
  --radius:14px;
  --radius-lg:20px;
  --shadow:0 10px 40px rgba(0,0,0,.45);
  --grad:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1140px;margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(7,9,13,.85);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;color:var(--text);letter-spacing:.02em}
.logo:hover{text-decoration:none}
.logo-mark{width:30px;height:30px;border-radius:8px;background:var(--grad);display:grid;place-items:center;color:var(--accent-ink);font-weight:900;font-size:.9rem}
.logo b{color:var(--accent)}
.main-nav{display:flex;gap:22px;margin-left:auto}
.main-nav a{color:var(--muted);font-size:.92rem;font-weight:500}
.main-nav a:hover,.main-nav a[aria-current="page"]{color:var(--text);text-decoration:none}
.nav-cta{margin-left:4px}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:8px;color:var(--text);width:42px;height:38px;font-size:1.1rem;cursor:pointer}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:12px;font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .15s;white-space:nowrap}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--grad);color:var(--accent-ink);box-shadow:0 6px 24px rgba(255,150,30,.28)}
.btn-primary:hover{box-shadow:0 10px 32px rgba(255,150,30,.4)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--muted)}
.btn-lg{padding:15px 32px;font-size:1.05rem;border-radius:14px}
.btn-block{width:100%}

/* ---------- hero ---------- */
.hero{padding:72px 0 56px;position:relative}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 320px at 75% 0%,rgba(255,140,30,.12),transparent 70%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--accent);
  background:rgba(255,176,32,.08);border:1px solid rgba(255,176,32,.25);
  padding:6px 14px;border-radius:999px;margin-bottom:18px}
h1{font-size:2.9rem;line-height:1.14;font-weight:800;letter-spacing:-.02em;margin-bottom:18px}
h1 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{color:var(--muted);font-size:1.12rem;max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.stat-row{display:flex;gap:40px;flex-wrap:wrap}
.stat b{display:block;font-size:1.7rem;font-weight:800;letter-spacing:-.01em}
.stat span{color:var(--muted);font-size:.85rem}
.hero-media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}

/* ---------- deal / code card ---------- */
.deal-card{background:linear-gradient(180deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow)}
.deal-card .deal-top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.deal-title{font-size:1.15rem;font-weight:800}
.deal-pct{font-size:2rem;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.code-row{display:flex;gap:10px;flex-wrap:wrap}
.code-box{flex:1;min-width:180px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:#0a0d12;border:1px dashed rgba(255,176,32,.45);border-radius:12px;padding:12px 16px}
.code-box code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:1.05rem;font-weight:700;letter-spacing:.12em;color:var(--accent)}
.copy-btn{background:rgba(255,176,32,.12);border:1px solid rgba(255,176,32,.3);color:var(--accent);
  border-radius:8px;padding:6px 14px;font-weight:700;font-size:.85rem;cursor:pointer;transition:background .15s}
.copy-btn:hover{background:rgba(255,176,32,.22)}
.copy-btn.copied{background:var(--good);border-color:var(--good);color:#04140a}
.deal-note{color:var(--dim);font-size:.82rem;margin-top:14px}

/* ---------- external site shortcut card ---------- */
.site-link-card{display:flex;align-items:center;gap:20px;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:14px;
  color:var(--text);transition:transform .15s,border-color .15s}
.site-link-card:hover{text-decoration:none;transform:translateY(-2px);border-color:rgba(255,176,32,.5)}
.slc-thumb{flex-shrink:0;width:220px;border-radius:12px;overflow:hidden;border:1px solid var(--line-soft)}
.slc-thumb img{width:100%;height:auto;aspect-ratio:1.91/1;object-fit:cover}
.slc-body{display:flex;flex-direction:column;gap:4px;min-width:0}
.slc-domain{font-size:.76rem;color:var(--accent);font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.slc-title{font-weight:800;font-size:1.05rem;line-height:1.35}
.slc-desc{color:var(--muted);font-size:.88rem}
.slc-arrow{margin-left:auto;padding-right:10px;font-size:1.5rem;color:var(--accent);flex-shrink:0}

/* ---------- sections ---------- */
.section{padding:64px 0}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{max-width:680px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
h2{font-size:2rem;font-weight:800;letter-spacing:-.02em;line-height:1.2;margin-bottom:12px}
h3{font-size:1.25rem;font-weight:700;margin-bottom:10px}
.section-head p{color:var(--muted);font-size:1.05rem}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.card .icon{width:44px;height:44px;border-radius:12px;background:rgba(255,176,32,.1);
  border:1px solid rgba(255,176,32,.22);display:grid;place-items:center;font-size:1.3rem;margin-bottom:16px}
.card p{color:var(--muted);font-size:.95rem}
.card a{font-weight:600}

.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split .media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.split ul,.split-solo ul{list-style:none;margin-top:18px}
.split ul li,.split-solo ul li{padding:8px 0 8px 30px;position:relative;color:var(--muted)}
.split ul li::before,.split-solo ul li::before{content:"✓";position:absolute;left:0;top:8px;color:var(--good);font-weight:800}
.split ul li b,.split-solo ul li b{color:var(--text)}
.split-solo{max-width:860px}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}
table{width:100%;border-collapse:collapse;font-size:.93rem;min-width:560px}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line-soft)}
th{background:var(--panel-2);color:var(--muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700}
tr:last-child td{border-bottom:none}
td.good{color:var(--good);font-weight:700}
td.hl-col,th.hl-col{background:rgba(255,176,32,.06)}
.table-note{color:var(--dim);font-size:.82rem;margin-top:12px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative}
.step-num{width:38px;height:38px;border-radius:50%;background:var(--grad);color:var(--accent-ink);
  display:grid;place-items:center;font-weight:900;font-size:1.05rem;margin-bottom:16px}
.step p{color:var(--muted);font-size:.94rem}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,rgba(255,176,32,.13),rgba(255,122,26,.07));
  border:1px solid rgba(255,176,32,.3);border-radius:var(--radius-lg);
  padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band h2{margin-bottom:6px}
.cta-band p{color:var(--muted)}
.cta-band .actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto}
details.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
details.faq-item summary{padding:18px 22px;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:center}
details.faq-item summary::-webkit-details-marker{display:none}
details.faq-item summary::after{content:"+";font-size:1.3rem;color:var(--accent);flex-shrink:0;transition:transform .2s}
details.faq-item[open] summary::after{transform:rotate(45deg)}
details.faq-item .faq-body{padding:0 22px 20px;color:var(--muted)}
details.faq-item .faq-body a{font-weight:600}

/* ---------- blog ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .15s,border-color .15s}
.post-card:hover{transform:translateY(-3px);border-color:var(--muted)}
.post-card .thumb{aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.post-card .thumb img{width:100%;height:100%;object-fit:cover}
.post-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card .meta{color:var(--dim);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700}
.post-card h3 a{color:var(--text)}
.post-card p{color:var(--muted);font-size:.92rem;flex:1}
.post-card .more{font-weight:700;font-size:.9rem}

/* article prose */
.article{max-width:780px;margin:0 auto}
.article-head{margin-bottom:32px}
.article-head h1{font-size:2.3rem}
.article-meta{color:var(--dim);font-size:.88rem;display:flex;gap:16px;flex-wrap:wrap}
.prose h2{font-size:1.55rem;margin:40px 0 14px}
.prose h3{font-size:1.2rem;margin:28px 0 10px}
.prose p{color:#c6cdd8;margin-bottom:16px}
.prose ul,.prose ol{margin:0 0 16px 24px;color:#c6cdd8}
.prose li{margin-bottom:8px}
.prose figure{margin:28px 0}
.prose figure img{border-radius:var(--radius);border:1px solid var(--line)}
.prose figcaption{color:var(--dim);font-size:.82rem;margin-top:10px;text-align:center}
.prose .table-wrap{margin:24px 0}
.callout{background:rgba(255,176,32,.07);border:1px solid rgba(255,176,32,.25);
  border-left:4px solid var(--accent);border-radius:10px;padding:18px 22px;margin:24px 0;color:#d9dee7}
.callout b{color:var(--accent)}

/* ---------- breadcrumbs ---------- */
.crumbs{padding:18px 0 0;font-size:.84rem;color:var(--dim)}
.crumbs ol{list-style:none;display:flex;gap:8px;flex-wrap:wrap}
.crumbs li+li::before{content:"›";margin-right:8px;color:var(--dim)}
.crumbs a{color:var(--muted)}

/* ---------- page hero (subpages) ---------- */
.page-hero{padding:48px 0 8px}
.page-hero h1{font-size:2.4rem;max-width:800px}
.page-hero .lede{margin-bottom:8px}

/* ---------- badges / trust ---------- */
.chip-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.chip{background:var(--panel);border:1px solid var(--line);border-radius:999px;
  padding:8px 16px;font-size:.83rem;color:var(--muted);display:inline-flex;align-items:center;gap:8px}
.chip b{color:var(--text)}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line-soft);background:var(--bg-soft);padding:56px 0 110px;margin-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px}
.footer-grid h4{font-size:.82rem;text-transform:uppercase;letter-spacing:.1em;color:var(--dim);margin-bottom:14px}
.footer-grid ul{list-style:none}
.footer-grid li{margin-bottom:9px}
.footer-grid a{color:var(--muted);font-size:.92rem}
.footer-grid a:hover{color:var(--text)}
.footer-about p{color:var(--muted);font-size:.9rem;margin-top:14px;max-width:320px}
.disclaimer{color:var(--dim);font-size:.78rem;line-height:1.6;border-top:1px solid var(--line-soft);padding-top:22px}

/* ---------- sticky mobile CTA ---------- */
.mcta{position:fixed;left:0;right:0;bottom:0;z-index:60;display:none;
  background:rgba(10,13,18,.96);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);padding:10px 14px calc(10px + env(safe-area-inset-bottom))}
.mcta-inner{display:flex;gap:10px;align-items:center}
.mcta .code-box{padding:8px 12px;min-width:0}
.mcta .code-box code{font-size:.9rem}
.mcta .btn{padding:11px 18px;font-size:.9rem;flex-shrink:0}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .hero-grid,.split{grid-template-columns:1fr;gap:32px}
  .grid-3,.steps,.post-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  h1{font-size:2.3rem}
}
@media(max-width:760px){
  .main-nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;
    background:var(--bg-soft);border-bottom:1px solid var(--line);padding:10px 20px 16px}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 0;border-bottom:1px solid var(--line-soft);font-size:1rem}
  .nav-toggle{display:block}
  .nav-cta{display:none}
  .grid-3,.grid-2,.steps,.post-grid{grid-template-columns:1fr}
  .hero{padding:44px 0 40px}
  h1{font-size:1.95rem}
  .page-hero h1,.article-head h1{font-size:1.75rem}
  h2{font-size:1.5rem}
  .cta-band{padding:30px 22px}
  .mcta{display:block}
  body{padding-bottom:0}
  .stat-row{gap:24px}
  .stat b{font-size:1.35rem}
  /* deal card keeps the desktop horizontal layout on mobile */
  .deal-card{padding:20px 16px}
  .deal-top{flex-wrap:nowrap;align-items:flex-start;gap:12px}
  .deal-pct{font-size:1.3rem;white-space:nowrap}
  .code-row{flex-direction:row;flex-wrap:nowrap;gap:8px}
  .code-box{flex:1;min-width:0;padding:10px 12px;gap:8px}
  .code-box code{font-size:.9rem;letter-spacing:.08em}
  .code-box .copy-btn{padding:5px 10px;font-size:.78rem}
  .code-row .btn{width:auto;padding:12px 14px;font-size:.88rem;border-radius:12px;white-space:nowrap}
  .chip-row{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .chip-row::-webkit-scrollbar{display:none}
  .chip{white-space:nowrap;flex-shrink:0}
  /* shortcut card: stay horizontal with a compact thumbnail */
  .site-link-card{gap:14px;padding:12px}
  .slc-thumb{width:106px}
  .slc-title{font-size:.92rem}
  .slc-desc{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:.8rem}
  .slc-arrow{font-size:1.2rem;padding-right:4px}
}