:root {
  --ink: #0b0b0b;
  --ink-soft: #161616;
  --paper: #f4f2eb;
  --white: #ffffff;
  --yellow: #ffd800;
  --line: rgba(11, 11, 11, .16);
  --line-dark: rgba(255,255,255,.16);
  --muted: #6e6b64;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
.container { width: min(calc(100% - 48px), var(--max)); margin: 0 auto; }
.section-dark { background: var(--ink); color: var(--white); }
.section-yellow { background: var(--yellow); color: var(--ink); }
.section-light { background: var(--paper); color: var(--ink); }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(24px, calc((100vw - var(--max)) / 2));
  background: rgba(11,11,11,.92);
  color: #fff;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.brand { display: inline-flex; gap: 12px; align-items: center; text-decoration: none; font-weight: 900; letter-spacing: .04em; }
.brand-mark { width: 18px; height: 18px; background: var(--yellow); display: inline-block; transform: skew(-14deg); }
.nav { display: flex; gap: 28px; align-items: center; font-size: 14px; }
.nav a { text-decoration: none; opacity: .82; transition: opacity .2s; }
.nav a:hover { opacity: 1; }
.menu-button { display: none; border: 1px solid rgba(255,255,255,.25); color: #fff; background: transparent; padding: 9px 12px; font: inherit; }

.hero { min-height: 770px; padding-top: 76px; position: relative; overflow: hidden; }
.hero-inner { min-height: 694px; display: flex; flex-direction: column; justify-content: center; position: relative; z-index: 2; padding: 80px 0; }
.eyebrow { margin: 0 0 18px; text-transform: uppercase; letter-spacing: .18em; font-size: 12px; font-weight: 800; }
h1, h2, h3, p { max-width: 100%; }
h1 { margin: 0; max-width: 1000px; font-size: clamp(54px, 7.6vw, 112px); line-height: .92; letter-spacing: -.055em; font-weight: 900; }
.hero-copy { width: min(700px, 100%); margin: 36px 0 0; font-size: clamp(20px, 2vw, 27px); line-height: 1.38; color: rgba(255,255,255,.78); }
.hero-copy strong { color: var(--yellow); }
.hero-actions { display: flex; gap: 12px; margin-top: 42px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 22px; text-decoration: none; font-weight: 800; border: 1px solid transparent; transition: transform .2s, background .2s, color .2s; }
.button:hover { transform: translateY(-2px); }
.button-yellow { background: var(--yellow); color: var(--ink); }
.button-ghost { border-color: rgba(255,255,255,.30); color: #fff; }
.road-lines { position: absolute; width: 700px; height: 950px; right: -130px; top: -90px; transform: rotate(18deg); opacity: .25; background: repeating-linear-gradient(90deg, transparent 0 115px, var(--yellow) 115px 122px, transparent 122px 237px); mask-image: linear-gradient(to bottom, transparent, #000 20%, #000 75%, transparent); }

.product-section { padding: 120px 0; }
.product-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 90px; align-items: start; }
.groozgo-logo { display: inline-block; margin-bottom: 32px; font-weight: 1000; font-size: clamp(58px, 7vw, 96px); line-height: 1; letter-spacing: -.065em; }
.groozgo-logo span { display: inline-block; transform: skew(-8deg); }
h2 { margin: 0; font-size: clamp(42px, 5vw, 72px); line-height: .98; letter-spacing: -.045em; }
.lead { font-size: 22px; line-height: 1.5; margin: 28px 0; max-width: 640px; }
.text-link { display: inline-block; margin-top: 14px; font-weight: 850; text-decoration: none; border-bottom: 2px solid currentColor; padding-bottom: 3px; }
.product-features { border-top: 2px solid var(--ink); }
.feature { display: grid; grid-template-columns: 64px 1fr; column-gap: 22px; padding: 28px 0; border-bottom: 1px solid rgba(11,11,11,.30); }
.feature-num { grid-row: 1 / 3; font-size: 13px; font-weight: 900; }
.feature h3 { margin: 0 0 10px; font-size: 28px; letter-spacing: -.025em; }
.feature p { margin: 0; font-size: 17px; line-height: 1.55; }

.registry-section { padding: 110px 0; }
.registry-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.registry-card { border: 1px solid var(--line-dark); padding: 38px; background: rgba(255,255,255,.035); }
.registry-number { font-size: clamp(52px, 6vw, 82px); font-weight: 950; color: var(--yellow); letter-spacing: -.05em; line-height: 1; margin-bottom: 26px; }
dl { margin: 0; }
dl > div { display: grid; grid-template-columns: 160px 1fr; gap: 22px; padding: 18px 0; border-top: 1px solid var(--line-dark); }
dt { font-size: 12px; text-transform: uppercase; letter-spacing: .10em; color: rgba(255,255,255,.48); font-weight: 800; }
dd { margin: 0; line-height: 1.45; }
.text-link-light { color: var(--yellow); }

.disclosure-section { padding: 120px 0; }
.section-heading { display: grid; grid-template-columns: 230px 1fr; gap: 70px; align-items: start; margin-bottom: 60px; }
.section-heading h2 { font-size: clamp(38px, 4vw, 62px); }
.facts-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.fact-card { min-height: 260px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.32); }
.fact-wide { grid-column: 1 / -1; min-height: auto; }
.fact-code { display: inline-flex; min-width: 42px; height: 30px; padding: 0 8px; align-items: center; justify-content: center; background: var(--ink); color: var(--yellow); font-weight: 900; font-size: 12px; margin-bottom: 30px; }
.fact-card h3 { margin: 0 0 20px; font-size: 24px; letter-spacing: -.025em; }
.fact-card p { margin: 0 0 14px; font-size: 17px; line-height: 1.62; }
.fact-card p:last-child { margin-bottom: 0; }
.fact-card a { font-weight: 800; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.muted { color: var(--muted); }
.big-data { font-size: clamp(34px, 4vw, 52px) !important; font-weight: 900; letter-spacing: -.04em; }
.price-card { background: var(--yellow); }
.requirements-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 64px; }
.requirement-card { background: var(--ink); color: #fff; padding: 34px; min-height: 315px; position: relative; }
.requirement-card h3 { margin: 0 0 18px; padding-right: 42px; font-size: 27px; letter-spacing: -.025em; }
.requirement-card p { color: rgba(255,255,255,.78); font-size: 17px; line-height: 1.6; }
.requirement-number { position: absolute; right: 28px; top: 26px; color: var(--yellow); font-weight: 950; font-size: 32px; }
.tech-list { list-style: none; padding: 0; margin: 26px 0 0; border-top: 1px solid var(--line-dark); }
.tech-list li { display: flex; justify-content: space-between; gap: 20px; padding: 14px 0; border-bottom: 1px solid var(--line-dark); }
.tech-list span { color: rgba(255,255,255,.55); }
.tech-list strong { text-align: right; }

.contacts-section { padding: 90px 0; }
.contacts-grid { display: grid; grid-template-columns: .8fr 1fr 1.1fr; gap: 70px; align-items: start; }
.contacts-grid h2 { font-size: clamp(42px, 5vw, 64px); }
.contact-list { display: flex; flex-direction: column; gap: 14px; font-size: 24px; font-weight: 900; }
.contact-list a { text-decoration: none; }
.contact-list a:hover { text-decoration: underline; text-underline-offset: 5px; }
address { font-style: normal; font-size: 18px; line-height: 1.55; }
.footer { padding: 28px 0; font-size: 13px; color: rgba(255,255,255,.60); }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; align-items: center; }
.footer a { color: var(--yellow); text-decoration: none; }

@media (max-width: 900px) {
  .container { width: min(calc(100% - 32px), var(--max)); }
  .site-header { height: 64px; padding: 0 16px; }
  .nav { position: absolute; left: 0; right: 0; top: 64px; display: none; flex-direction: column; align-items: stretch; padding: 18px 16px 24px; background: var(--ink); border-top: 1px solid rgba(255,255,255,.1); }
  .nav.open { display: flex; }
  .nav a { padding: 9px 0; font-size: 16px; }
  .menu-button { display: block; }
  .hero { padding-top: 64px; min-height: 690px; }
  .hero-inner { min-height: 626px; padding: 80px 0 60px; }
  h1 { font-size: clamp(48px, 14vw, 78px); }
  .hero-copy { font-size: 19px; }
  .road-lines { right: -380px; opacity: .18; }
  .product-section, .registry-section, .disclosure-section { padding: 78px 0; }
  .product-grid, .registry-grid, .section-heading, .contacts-grid { grid-template-columns: 1fr; gap: 40px; }
  .facts-grid, .requirements-grid { grid-template-columns: 1fr; }
  .fact-wide { grid-column: auto; }
  .fact-card { min-height: auto; }
  .contacts-section { padding: 70px 0; }
}

@media (max-width: 560px) {
  .brand { font-size: 14px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .button { width: 100%; }
  h2 { font-size: 40px; }
  .groozgo-logo { font-size: 64px; }
  .feature { grid-template-columns: 44px 1fr; }
  .registry-card, .fact-card, .requirement-card { padding: 24px; }
  dl > div { grid-template-columns: 1fr; gap: 6px; }
  .section-heading { margin-bottom: 38px; }
  .section-heading h2 { font-size: 34px; }
  .contact-list { font-size: 21px; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}