:root {
  color-scheme: light dark;
  --bg: #f8faff;
  --surface: #ffffff;
  --surface-alt: #edf3ff;
  --text: #10182c;
  --muted: #5d6982;
  --border: #cfd9ec;
  --accent: #315f9c;
  --accent-strong: #1e477f;
  --shadow: 0 16px 48px rgba(21, 42, 78, 0.14);
  --max: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #070b18;
    --surface: #10182d;
    --surface-alt: #172440;
    --text: #f4f7ff;
    --muted: #a9b5cd;
    --border: #2a3b5b;
    --accent: #79a7e3;
    --accent-strong: #a8c9f2;
    --shadow: 0 18px 56px rgba(0, 0, 0, 0.45);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--accent); }
.container { width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 1rem; top: 1rem; z-index: 1000; background: var(--surface); padding: .6rem 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
}
.site-header .container { min-height: 64px; display: flex; align-items: center; justify-content: space-between; }
.site-logo { display: flex; align-items: center; gap: .65rem; color: var(--text); font-weight: 700; text-decoration: none; }
.site-logo-icon { width: 30px; height: 30px; border-radius: 22%; }
.site-nav { display: flex; align-items: center; gap: .35rem; }
.site-nav a { color: var(--muted); text-decoration: none; padding: .45rem .7rem; border-radius: .6rem; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--text); background: var(--surface-alt); }
.nav-cta { color: #fff; background: var(--accent-strong); padding: .45rem .8rem; border-radius: 999px; font-size: .84rem; }
.nav-toggle { display: none; border: 0; background: transparent; color: var(--text); padding: .5rem; }
.nav-toggle svg { width: 22px; }

.hero { padding: 5rem 0 4rem; background: radial-gradient(circle at 75% 15%, var(--surface-alt), transparent 42%); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 4rem; align-items: center; }
.hero-icon { width: 94px; height: 94px; border-radius: 22%; box-shadow: var(--shadow); margin-bottom: 1.5rem; }
.eyebrow, .section-label { color: var(--accent); font-size: .76rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
h1 { font-size: clamp(2.5rem, 6vw, 4.8rem); line-height: 1.02; letter-spacing: -.045em; margin: .5rem 0 1.3rem; }
.hero-copy > p { color: var(--muted); font-size: 1.15rem; max-width: 650px; }
.actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.8rem; }
.button { display: inline-block; padding: .75rem 1.15rem; border-radius: 999px; font-weight: 700; text-decoration: none; }
.button-primary { color: #fff; background: var(--accent-strong); }
.button-secondary { color: var(--text); border: 1px solid var(--border); background: var(--surface); }
.hero-shot { width: min(420px, 100%); margin: 0 auto; border-radius: 2rem; box-shadow: var(--shadow); border: 1px solid var(--border); }

.section { padding: 5rem 0; }
.section-alt { background: var(--surface-alt); }
.section-heading { max-width: 700px; margin: 0 auto 2.5rem; text-align: center; }
.section-heading h2 { font-size: clamp(1.8rem, 4vw, 2.7rem); line-height: 1.15; margin: .5rem 0; }
.section-heading p { color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 1.2rem; padding: 1.35rem; }
.card h3 { margin: 0 0 .45rem; }
.card p { margin: 0; color: var(--muted); }
.privacy-panel { display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; padding: 2rem; border: 1px solid var(--border); border-radius: 1.5rem; background: var(--surface); }
.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li { padding: .65rem 0; border-bottom: 1px solid var(--border); }
.check-list li::before { content: "✓"; color: var(--accent); font-weight: 900; margin-right: .7rem; }

.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; align-items: start; }
.gallery figure { margin: 0; }
.gallery img { border: 1px solid var(--border); border-radius: 1.25rem; box-shadow: 0 8px 25px rgba(21, 42, 78, .1); }
.gallery figcaption { color: var(--muted); text-align: center; font-size: .85rem; margin-top: .55rem; }

.doc-header { padding: 4rem 0 2rem; border-bottom: 1px solid var(--border); }
.doc-header h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
.doc-header p { color: var(--muted); max-width: 700px; }
.doc { padding: 3.5rem 0 5rem; }
.doc-layout { display: grid; grid-template-columns: 220px minmax(0, 760px); gap: 3rem; justify-content: center; align-items: start; }
.toc { position: sticky; top: 90px; }
.toc ul { list-style: none; padding: 0; }
.toc a { color: var(--muted); text-decoration: none; }
.doc-content h2 { margin-top: 2.5rem; scroll-margin-top: 90px; }
.doc-content h2:first-child { margin-top: 0; }
.doc-content p, .doc-content li { color: var(--muted); }
.callout { border-left: 4px solid var(--accent); background: var(--surface-alt); padding: 1rem 1.2rem; border-radius: 0 .8rem .8rem 0; }
code { background: var(--surface-alt); padding: .1rem .35rem; border-radius: .3rem; }

.site-footer { border-top: 1px solid var(--border); padding: 2.5rem 0; }
.footer-grid { display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.footer-links { display: flex; gap: 1rem; flex-wrap: wrap; }
.footer-links a, .fine-print { color: var(--muted); }

@media (max-width: 900px) {
  .hero-grid, .privacy-panel { grid-template-columns: 1fr; }
  .hero-copy { text-align: center; }
  .hero-icon { margin-left: auto; margin-right: auto; }
  .actions { justify-content: center; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .doc-layout { grid-template-columns: 1fr; }
  .toc { position: static; background: var(--surface); border: 1px solid var(--border); border-radius: 1rem; padding: 1rem; }
}

@media (max-width: 680px) {
  .site-nav { display: none; }
  .site-nav.open { display: flex; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: stretch; background: var(--surface); padding: 1rem; border-bottom: 1px solid var(--border); }
  .nav-toggle { display: block; }
  .cards, .gallery { grid-template-columns: 1fr; }
  .hero { padding-top: 3rem; }
}