:root {
  --ink: #0a0a0a;
  --paper: #f1f0eb;
  --acid: #d7ff3f;
  --muted: #66655f;
  --line: rgba(10, 10, 10, .16);
  --display: "Arial Narrow", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --sans: Inter, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
.noise { position: fixed; inset: 0; z-index: 99; pointer-events: none; opacity: .035; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E"); }
.topbar { height: 78px; padding: 0 4vw; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,.16); background: var(--ink); color: #fff; }
.brand { text-decoration: none; font-size: 22px; font-weight: 900; letter-spacing: -.06em; }
.brand span { margin-left: 4px; font-size: 8px; vertical-align: top; letter-spacing: 0; }
.topbar nav { display: flex; gap: 28px; align-items: center; }
.topbar nav a { color: rgba(255,255,255,.68); text-decoration: none; font-size: 12px; }
.topbar nav a:last-child { color: var(--acid); border-bottom: 1px solid currentColor; padding-bottom: 4px; }
.hero { min-height: 720px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(420px, .85fr); background: var(--ink); color: #fff; }
.hero-copy { padding: 11vw 5vw 8vw; display: flex; flex-direction: column; justify-content: center; }
.eyebrow, .section-label { font-size: 10px; letter-spacing: .2em; text-transform: uppercase; }
.eyebrow { color: rgba(255,255,255,.52); }
.eyebrow i { display: inline-block; width: 28px; height: 1px; margin-right: 12px; background: var(--acid); vertical-align: middle; }
h1, h2 { margin: 0; font-family: var(--display); letter-spacing: -.045em; }
h1 { max-width: 920px; margin: 54px 0 34px; font-size: clamp(52px, 6.5vw, 108px); line-height: .98; }
.hero-copy > p { max-width: 700px; margin: 0; color: rgba(255,255,255,.66); font-size: clamp(16px, 1.2vw, 20px); line-height: 1.85; }
.actions { margin-top: 50px; display: flex; flex-wrap: wrap; gap: 14px; }
.button { min-height: 52px; padding: 0 20px; display: inline-flex; align-items: center; justify-content: space-between; gap: 38px; border: 1px solid rgba(255,255,255,.35); color: #fff; text-decoration: none; font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.button-primary { background: var(--acid); border-color: var(--acid); color: var(--ink); }
.hero-media { min-height: 720px; position: relative; display: grid; place-items: center; overflow: hidden; background: #151515; }
.hero-media video { width: 100%; height: 100%; object-fit: contain; background: #070707; filter: saturate(.8) contrast(1.04); }
.hero-media span { position: absolute; right: 24px; bottom: 24px; padding: 9px 12px; border: 1px solid rgba(255,255,255,.26); color: rgba(255,255,255,.7); font-size: 9px; letter-spacing: .16em; }
.intro, .content-section, .related { padding: 110px 5vw; }
.intro { display: grid; grid-template-columns: .75fr 1.25fr; gap: 8vw; }
.section-label { color: var(--muted); }
.intro h2, .content-section h2, .related h2 { font-size: clamp(40px, 5vw, 76px); line-height: 1.05; }
.intro-copy > p { margin: 30px 0 0; max-width: 780px; color: #4f4e49; font-size: 16px; line-height: 1.95; }
.fact-grid { margin-top: 54px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.fact-grid article { min-height: 190px; padding: 26px 22px 20px 0; border-right: 1px solid var(--line); }
.fact-grid article:not(:first-child) { padding-left: 22px; }
.fact-grid article:last-child { border-right: 0; }
.fact-grid span { color: var(--muted); font-size: 10px; letter-spacing: .14em; }
.fact-grid h3 { margin: 48px 0 12px; font-size: 20px; }
.fact-grid p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }
.content-section { background: #cfcdc5; }
.content-head { display: grid; grid-template-columns: .7fr 1.3fr; gap: 8vw; align-items: end; margin-bottom: 72px; }
.content-head p { margin: 0; color: #53514b; line-height: 1.85; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.step { min-height: 260px; padding: 26px 28px 22px 0; border-right: 1px solid var(--line); }
.step:not(:first-child) { padding-left: 28px; }
.step:last-child { border-right: 0; }
.step span { font-size: 10px; letter-spacing: .12em; color: var(--muted); }
.step h3 { margin: 72px 0 14px; font-size: 22px; }
.step p { margin: 0; color: #53514b; font-size: 13px; line-height: 1.8; }
.faq { padding: 110px 5vw; background: var(--paper); }
.faq h2 { margin-bottom: 60px; font-size: clamp(40px, 5vw, 76px); }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { padding: 26px 0; display: flex; justify-content: space-between; gap: 20px; cursor: pointer; list-style: none; font-size: clamp(17px, 1.4vw, 23px); font-weight: 600; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-weight: 300; }
.faq details[open] summary::after { content: "−"; }
.faq details p { max-width: 840px; margin: -2px 0 28px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.related { background: var(--acid); }
.related-grid { margin-top: 54px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: rgba(10,10,10,.22); border: 1px solid rgba(10,10,10,.22); }
.related a { min-height: 220px; padding: 30px; display: flex; flex-direction: column; justify-content: space-between; background: var(--acid); text-decoration: none; }
.related a span { font-size: 10px; letter-spacing: .14em; }
.related a strong { max-width: 560px; font-family: var(--display); font-size: clamp(28px, 3vw, 48px); line-height: 1.05; }
.cta { min-height: 480px; padding: 90px 5vw; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; background: var(--ink); color: #fff; }
.cta h2 { max-width: 900px; font-size: clamp(44px, 6vw, 92px); line-height: 1; }
.cta p { max-width: 650px; margin: 28px 0 38px; color: rgba(255,255,255,.6); line-height: 1.8; }
.footer { padding: 36px 5vw; display: flex; justify-content: space-between; gap: 30px; background: #050505; color: #fff; }
.footer p { margin: 0; color: rgba(255,255,255,.46); font-size: 11px; }
.footer div { display: flex; flex-wrap: wrap; gap: 24px; }
.footer a { color: rgba(255,255,255,.7); font-size: 11px; text-decoration: none; }

@media (max-width: 900px) {
  .topbar nav a:not(:last-child) { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { padding: 100px 6vw 70px; }
  .hero-media { min-height: 62svh; }
  .intro, .content-head { grid-template-columns: 1fr; gap: 36px; }
  .fact-grid { grid-template-columns: 1fr; }
  .fact-grid article, .fact-grid article:not(:first-child) { min-height: auto; padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .fact-grid h3 { margin-top: 30px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .step:nth-child(2) { border-right: 0; }
  .step:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 560px) {
  h1 { font-size: 14vw; }
  .intro, .content-section, .related, .faq { padding: 80px 6vw; }
  .steps, .related-grid { grid-template-columns: 1fr; }
  .step, .step:not(:first-child) { min-height: auto; padding: 24px 0 34px; border-right: 0; border-bottom: 1px solid var(--line); }
  .step h3 { margin-top: 38px; }
  .footer { flex-direction: column; }
}