:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --ink: #121722;
  --muted: #5b6475;
  --line: rgba(18, 23, 34, 0.12);
  --accent: #0f8b8d;
  --accent-strong: #0a6668;
  --accent-soft: #dff6f4;
  --warm: #f2b84b;
  --rose: #bf4e73;
  --shadow: 0 18px 45px rgba(18, 23, 34, 0.11);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #fbfdff 0%, var(--bg) 58%, #eef3f5 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }
.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 16px; top: 16px; z-index: 100; padding: 10px 12px; background: var(--ink); color: #fff; }
.shell { width: min(1140px, calc(100% - 32px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: rgba(251, 253, 255, 0.9); backdrop-filter: blur(14px); }
.nav-shell { display: grid; grid-template-columns: auto 1fr auto; gap: 22px; align-items: center; padding: 14px 0; }
.brand, .main-nav, .hero-actions, .cta-actions { display: flex; align-items: center; }
.brand { gap: 10px; font-weight: 850; font-size: 20px; }
.brand-mark { display: grid; width: 38px; height: 38px; place-items: center; border-radius: 8px; background: linear-gradient(135deg, var(--accent), var(--rose)); color: #fff; font-size: 14px; }
.main-nav { justify-content: center; gap: 20px; color: var(--muted); font-size: 14px; }
.nav-cta, .hero-actions a, .cta-actions a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 18px; border-radius: 8px; background: var(--accent); color: #fff; font-weight: 760; }
.nav-cta:hover, .hero-actions a:hover, .cta-actions a:hover { background: var(--accent-strong); }
.ghost { background: transparent !important; color: var(--ink) !important; border: 1px solid var(--line); }
.hero, .overview, .media, .workflow, .use-cases, .official-links, .faq, .cta-section { padding: 42px 0; }
.hero-shell { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.96fr); gap: 24px; align-items: stretch; }
.hero-copy, .hero-visual, .media-card, .step-grid article, .use-case-grid article, .link-grid a, .faq-list article, .cta-shell { border: 1px solid var(--line); border-radius: 8px; background: var(--panel); box-shadow: var(--shadow); }
.hero-copy { padding: clamp(28px, 5vw, 58px); }
.eyebrow, .section-kicker, .step-grid span, .link-grid span { display: inline-flex; width: fit-content; border-radius: 999px; background: var(--accent-soft); color: var(--accent-strong); font-size: 12px; font-weight: 850; letter-spacing: 0.08em; padding: 7px 10px; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 860px; margin-bottom: 20px; font-size: clamp(40px, 6.5vw, 72px); line-height: 0.98; letter-spacing: 0; }
h2 { margin-bottom: 14px; font-size: clamp(28px, 4vw, 46px); line-height: 1.05; letter-spacing: 0; }
h3 { margin-bottom: 10px; font-size: 21px; letter-spacing: 0; }
.hero-lead, .split-shell p, .section-heading p, .step-grid p, .use-case-grid p, .faq-list p, figcaption { color: var(--muted); font-size: 17px; line-height: 1.68; }
.hero-actions, .cta-actions { flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.hero-visual { overflow: hidden; }
.hero-visual img { width: 100%; height: 72%; min-height: 330px; object-fit: cover; }
.hero-visual figcaption { margin: 0; padding: 16px 18px; font-size: 14px; }
.split-shell { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 28px; align-items: start; }
.section-heading { max-width: 790px; margin-bottom: 24px; }
.media-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.media-card { overflow: hidden; }
.media-card video, .media-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; background: #dce5ea; }
.media-card div { padding: 16px; }
.media-card p { color: var(--muted); line-height: 1.55; }
.step-grid, .use-case-grid, .link-grid, .faq-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.use-case-grid { grid-template-columns: repeat(4, 1fr); }
.faq-list { grid-template-columns: repeat(2, 1fr); }
.step-grid article, .use-case-grid article, .faq-list article { padding: 22px; }
.step-grid span { margin-bottom: 16px; }
.link-grid a { padding: 20px; transition: transform 0.18s ease, border-color 0.18s ease; }
.link-grid a:hover { transform: translateY(-2px); border-color: rgba(15, 139, 141, 0.35); }
.link-grid strong { display: block; margin-top: 8px; font-size: 18px; }
.cta-shell { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; padding: clamp(24px, 4vw, 42px); }

@media (max-width: 920px) {
  .nav-shell { grid-template-columns: 1fr auto; }
  .main-nav { display: none; }
  .hero-shell, .split-shell, .cta-shell { grid-template-columns: 1fr; }
  .step-grid, .use-case-grid, .link-grid, .faq-list, .media-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 24px, 1140px); }
  .nav-cta { display: none; }
  .hero, .overview, .media, .workflow, .use-cases, .official-links, .faq, .cta-section { padding: 30px 0; }
  .step-grid, .use-case-grid, .link-grid, .faq-list, .media-grid { grid-template-columns: 1fr; }
  h1 { font-size: 39px; }
  h2 { font-size: 30px; }
}