@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@500;600&family=Manrope:wght@400;500;600;700;800&display=swap");

:root {
  --bg: #191a20;
  --rail: #25272f;
  --panel: #24262d;
  --panel-2: #2a2c35;
  --panel-3: #202127;
  --line: rgba(255,255,255,.085);
  --line-strong: rgba(255,255,255,.15);
  --text: #f6f7fb;
  --muted: #a7a9b5;
  --dim: #787b89;
  --accent: #7773ff;
  --accent-hi: #918cff;
  --accent-soft: rgba(119,115,255,.15);
  --green: #64dba7;
  --green-soft: rgba(100,219,167,.12);
  --gold: #f2b85b;
  --gold-soft: rgba(242,184,91,.12);
  --red: #ff7f86;
  --sans: "Manrope", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --topbar: 64px;
  --radius: 12px;
  --radius-lg: 20px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 84% 0, rgba(119,115,255,.12), transparent 28rem),
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    var(--bg);
  background-size: auto, 100% 7rem, auto;
  font: 15px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
h1, h2, h3, p, ul, ol { margin-top: 0; }
:where(a, button, summary):focus-visible { outline: 2px solid var(--accent-hi); outline-offset: 3px; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 200; padding: 10px 14px; border-radius: 8px; background: var(--accent); color: white; text-decoration: none; }
.skip-link:focus { top: 16px; }
.shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.eyebrow { margin: 0; color: var(--green); font: 600 11px/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  min-height: var(--topbar);
  padding: 0 clamp(24px, 4vw, 52px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(25,26,32,.92);
  backdrop-filter: blur(16px);
}
.brand { display: block; width: 172px; height: 44px; overflow: hidden; flex: 0 0 auto; text-decoration: none; }
.brand img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.nav-links { min-width: 0; display: flex; align-items: center; justify-content: center; gap: 24px; }
.nav-links a { color: var(--muted); font: 600 11px/1 var(--mono); text-decoration: none; white-space: nowrap; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--green); }

.button {
  min-height: 44px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent);
  border-radius: 10px;
  background: var(--accent);
  color: white;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: .16s ease;
}
.button:hover { border-color: var(--accent-hi); background: var(--accent-hi); transform: translateY(-1px); }
.button-small { min-height: 38px; padding-inline: 14px; }
.button-primary { border-color: var(--accent); background: var(--accent); }
.button-trade { border-color: var(--green); background: var(--green); color: #10231c; }
.button-trade:hover { border-color: #83e8bf; background: #83e8bf; }
.button-secondary { border-color: var(--line-strong); background: transparent; color: var(--text); }
.button-secondary:hover { border-color: rgba(255,255,255,.24); background: rgba(255,255,255,.04); }

.breadcrumb { padding-top: 30px; display: flex; align-items: center; gap: 9px; color: var(--dim); font: 500 11px/1 var(--mono); text-transform: uppercase; }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { color: var(--text); }

.guide-hero { padding: clamp(34px, 5vw, 62px) 0 clamp(46px, 6vw, 76px); display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); gap: clamp(34px, 6vw, 82px); align-items: end; }
.guide-hero-simple { grid-template-columns: minmax(0, 860px); }
.guide-hero h1 { max-width: 860px; margin: 16px 0 0; font-size: clamp(42px, 6vw, 74px); font-weight: 800; line-height: 1; letter-spacing: -.055em; text-wrap: balance; }
.guide-hero-simple h1 { max-width: 760px; }
.hero-lede { max-width: 760px; margin: 20px 0 0; color: var(--muted); font-size: clamp(15px, 1.5vw, 18px); }
.guide-meta { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 9px 20px; color: var(--dim); font: 500 10px/1.4 var(--mono); }
.guide-meta span { display: inline-flex; align-items: center; gap: 8px; }
.guide-meta span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 4px var(--gold-soft); }

.guide-docket { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel); box-shadow: 0 26px 80px rgba(0,0,0,.2); }
.guide-docket > p:first-child { margin: 0; padding: 18px 20px; border-bottom: 1px solid var(--line); background: var(--panel-2); color: var(--green); font: 600 10px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.guide-docket dl { margin: 0; padding: 4px 20px; }
.guide-docket div { padding: 17px 0; display: grid; grid-template-columns: 82px 1fr; gap: 14px; border-bottom: 1px solid var(--line); }
.guide-docket div:last-child { border-bottom: 0; }
.guide-docket dt { color: var(--dim); font: 500 10px/1.4 var(--mono); }
.guide-docket dd { margin: 0; color: #e5e6ec; font-size: 13px; font-weight: 700; line-height: 1.4; }

.article-wrap { padding: clamp(48px, 7vw, 82px) 0 clamp(72px, 9vw, 112px); border-top: 1px solid var(--line); background: rgba(32,33,39,.72); }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) minmax(220px, 1fr); gap: clamp(48px, 8vw, 110px); align-items: start; }
.article { min-width: 0; }
.article > p:first-child { font-size: 18px; color: #d9dae2; }
.article h2 { margin: 72px 0 20px; scroll-margin-top: 84px; font-size: clamp(28px, 4vw, 43px); line-height: 1.08; letter-spacing: -.045em; }
.article h3 { margin: 34px 0 10px; font-size: 15px; font-weight: 800; letter-spacing: -.015em; }
.article p, .article li { color: var(--muted); }
.article strong { color: #e8e9ee; }
.article a:not(.button) { color: #bbb8ff; text-underline-offset: 4px; }
.article ul, .article ol { margin: 22px 0; padding-left: 1.3rem; }
.article li { margin: 12px 0; padding-left: .3rem; }
.article li::marker { color: var(--green); font-weight: 800; }

.quick-answer { position: relative; margin-bottom: 56px; padding: 28px 30px; border: 1px solid rgba(100,219,167,.34); border-radius: 14px; background: linear-gradient(135deg, var(--green-soft), rgba(0,0,0,.08)); box-shadow: 12px 12px 0 rgba(0,0,0,.12); }
.quick-answer::before { content: "Start here"; position: absolute; left: 22px; top: -10px; padding: 4px 8px; border-radius: 5px; background: var(--green); color: #10231c; font: 700 9px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.quick-answer p { margin: 0; color: var(--text); font-size: clamp(18px, 2vw, 24px); font-weight: 600; line-height: 1.5; }
.info-callout { margin: 30px 0; padding: 19px 21px; border-left: 3px solid var(--gold); border-radius: 0 10px 10px 0; background: var(--gold-soft); }
.info-callout strong { display: block; margin-bottom: 4px; color: var(--gold); }
.info-callout p { margin: 0; color: #d7d0c3; font-size: 13px; }
.step-list { margin: 28px 0; padding: 0 !important; list-style: none; counter-reset: steps; border-top: 1px solid var(--line); }
.step-list li { position: relative; margin: 0; padding: 22px 0 22px 54px; border-bottom: 1px solid var(--line); counter-increment: steps; }
.step-list li::before { content: "0" counter(steps); position: absolute; left: 2px; top: 23px; color: var(--green); font: 600 11px/1 var(--mono); }
.check-list { padding: 0 !important; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; list-style: none; }
.check-list li { position: relative; margin: 0; padding: 14px 16px 14px 36px; border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.025); }
.check-list li::before { content: ""; position: absolute; left: 15px; top: 20px; width: 7px; height: 7px; border-radius: 2px; background: var(--green); box-shadow: 0 0 0 4px var(--green-soft); }
.source-list { display: grid; gap: 9px; }
.source-link { padding: 15px 17px; display: flex; align-items: center; justify-content: space-between; gap: 16px; border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.02); text-decoration: none; }
.source-link:hover { border-color: var(--line-strong); background: rgba(255,255,255,.04); }
.source-link span { color: var(--green); }

.article-cta { margin: 66px 0 18px; padding: 32px; border: 1px solid rgba(119,115,255,.32); border-radius: 16px; background: radial-gradient(circle at 90% 10%, rgba(119,115,255,.18), transparent 38%), var(--panel); }
.article-cta h2 { margin: 0 0 12px; font-size: clamp(27px, 4vw, 40px); }
.article-cta p { max-width: 600px; color: var(--muted); }
.article-cta .button { margin-top: 8px; }
.trade-bridge { margin: 14px 0 30px; padding: 28px 30px; border: 1px solid rgba(100,219,167,.28); border-radius: 16px; background: linear-gradient(135deg, var(--green-soft), rgba(0,0,0,.06)); }
.trade-bridge h2 { max-width: 560px; margin: 12px 0 10px; font-size: clamp(24px, 3.5vw, 35px); }
.trade-bridge p { max-width: 610px; margin-bottom: 18px; }
.article-disclosure { padding: 18px 0; border-block: 1px solid var(--line); color: var(--dim) !important; font-size: 11px; }

.article-aside { position: sticky; top: 88px; }
.article-aside > p { margin: 0 0 12px; color: var(--dim); font: 600 10px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.article-aside nav { padding: 5px 0; border-block: 1px solid var(--line); }
.article-aside nav a { padding: 9px 0; display: block; color: var(--muted); font-size: 12px; text-decoration: none; }
.article-aside nav a:hover { color: var(--green); }
.aside-help { margin-top: 20px; padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.aside-help strong { font-size: 15px; }
.aside-help p { color: var(--muted); font-size: 11px; }
.aside-help .button { width: 100%; padding-inline: 10px; }

.related-section { padding: clamp(64px, 8vw, 92px) 0; }
.related-grid { margin-top: 18px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.related-card { min-height: 182px; padding: 22px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); text-decoration: none; transition: .18s ease; }
.related-card:hover { transform: translateY(-3px); border-color: var(--line-strong); }
.related-card small { color: var(--green); font: 600 10px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.related-card strong { max-width: 22ch; font-size: 18px; line-height: 1.28; }

.site-footer { padding: 34px max(24px, calc((100% - 1180px) / 2)); border-top: 1px solid var(--line); background: var(--rail); }
.footer-top { display: flex; align-items: start; justify-content: space-between; gap: 28px; }
.site-footer nav { display: flex; flex-wrap: wrap; justify-content: end; gap: 10px 20px; }
.site-footer nav a { color: var(--muted); font-size: 11px; text-decoration: none; }
.site-footer nav a:hover { color: white; }
.disclaimer { max-width: 760px; margin: 24px 0 16px; color: var(--dim); font-size: 11px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; color: var(--dim); font: 500 10px/1.4 var(--mono); }
.mobile-cta { display: none; }

.reveal { animation: reveal .55s cubic-bezier(.2,.7,.2,1) both; }
.reveal-delay { animation-delay: .1s; }
@keyframes reveal { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 920px) {
  .shell { width: min(100% - 32px, 720px); }
  .site-header { padding-inline: 16px; }
  .nav-links { display: none; }
  .guide-hero { grid-template-columns: 1fr; gap: 28px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-aside { display: none; }
  .related-grid { grid-template-columns: 1fr; }
  .site-footer { padding: 32px 16px 104px; }
  .footer-top { display: block; }
  .site-footer nav { justify-content: start; margin-top: 20px; }
  .mobile-cta { position: fixed; z-index: 100; inset: auto 0 0; display: block; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: rgba(25,26,32,.95); backdrop-filter: blur(16px); }
  .mobile-cta .button { width: 100%; }
}

@media (max-width: 620px) {
  body { font-size: 14px; }
  .brand { width: 138px; height: 36px; }
  .site-header > .button { min-height: 38px; padding-inline: 12px; font-size: 11px; }
  .breadcrumb { padding-top: 24px; }
  .guide-hero { padding-top: 30px; }
  .guide-hero h1 { font-size: clamp(37px, 12vw, 54px); }
  .guide-docket div { grid-template-columns: 74px 1fr; }
  .article-wrap { padding-top: 42px; }
  .quick-answer { padding: 26px 22px; }
  .check-list { grid-template-columns: 1fr; }
  .article h2 { margin-top: 58px; }
  .article-cta, .trade-bridge { padding: 24px 22px; }
  .footer-bottom { display: block; }
  .footer-bottom span { display: block; margin-top: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}