:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-alt: #eef2f7;
  --text: #16202c;
  --muted: #5a6b7b;
  --border: #dbe3ec;
  --brand: #0b7285;
  --brand-strong: #0a5c6b;
  --accent: #1098ad;
  --good: #2f9e44;
  --ok: #1971c2;
  --warn: #e8590c;
  --shadow: 0 1px 2px rgba(16, 32, 44, .06), 0 8px 24px rgba(16, 32, 44, .06);
  --radius: 14px;
  --wrap: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d141b;
    --surface: #141d26;
    --surface-alt: #101820;
    --text: #e7eef5;
    --muted: #9fb0c0;
    --border: #22303c;
    --brand: #38c0d4;
    --brand-strong: #7fdbe8;
    --accent: #38c0d4;
    --good: #51cf66;
    --ok: #4dabf7;
    --warn: #ffa94d;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 30px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}
a { color: var(--brand); }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .9em;
  background: var(--surface-alt);
  padding: .1em .35em;
  border-radius: 5px;
}
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 600; }
.brand-mark {
  display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff; font-size: 20px; font-weight: 700;
}
.brand-name b { color: var(--brand); }
.nav { display: flex; align-items: center; gap: 20px; }
.nav a { text-decoration: none; color: var(--muted); font-size: .95rem; }
.nav a:hover { color: var(--text); }
.nav-cta {
  background: var(--brand); color: #fff !important; padding: 8px 16px; border-radius: 9px; font-weight: 600;
}
.nav-cta:hover { background: var(--brand-strong); }
@media (max-width: 640px) {
  .nav a:not(.nav-cta) { display: none; }
}

/* Hero */
.hero { padding: 64px 0 48px; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; font-weight: 700; color: var(--accent); margin: 0 0 12px; }
.hero h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); line-height: 1.12; margin: 0 0 20px; letter-spacing: -.02em; max-width: 18ch; }
.lede { font-size: 1.08rem; color: var(--muted); max-width: 68ch; margin: 0 0 28px; }

.cta-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  border-radius: 12px; padding: 14px 26px; font-weight: 700; font-size: 1.02rem;
  text-decoration: none; border: 1px solid transparent; cursor: pointer;
}
.btn-download {
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff; box-shadow: var(--shadow);
}
.btn-download:hover { transform: translateY(-1px); }
.btn-icon { font-size: 1.1em; }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--brand); }
.cta-sub { font-size: .9rem; color: var(--muted); margin: 14px 0 0; }

.notices {
  margin-top: 30px; padding: 18px 20px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  border-left: 4px solid var(--warn); box-shadow: var(--shadow); max-width: 760px;
}
.notices-title { margin: 0 0 8px; font-weight: 700; font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--warn); }
.notices ul { margin: 0; padding-left: 20px; }
.notices li { margin: 6px 0; color: var(--muted); }
.notices li strong { color: var(--text); }

/* Sections */
.section { padding: 56px 0; }
.section-alt { background: var(--surface-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section h2 { font-size: clamp(1.4rem, 3vw, 2rem); margin: 0 0 8px; letter-spacing: -.01em; }
.section-lede { color: var(--muted); max-width: 60ch; margin: 0 0 24px; }

.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; margin-top: 24px; }
.feature { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.feature h3 { margin: 0 0 6px; font-size: 1.05rem; }
.feature p { margin: 0; color: var(--muted); font-size: .95rem; }

.platform-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 24px; }
.platform { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.platform h3 { margin: 0 0 10px; }
.platform p { color: var(--muted); margin: 0; font-size: .95rem; }
.platform-full { border-top: 3px solid var(--good); }
.tag { display: inline-block; font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; padding: 3px 10px; border-radius: 999px; margin-bottom: 10px; }
.tag-good { color: var(--good); background: color-mix(in srgb, var(--good) 14%, transparent); }
.tag-ok { color: var(--ok); background: color-mix(in srgb, var(--ok) 14%, transparent); }
.tag-warn { color: var(--warn); background: color-mix(in srgb, var(--warn) 16%, transparent); }

.doc-links { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 12px; }
.doc-links a {
  display: inline-block; padding: 10px 16px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 10px; text-decoration: none; font-weight: 600;
}
.doc-links a:hover { border-color: var(--brand); }
.fineprint { color: var(--muted); font-size: .88rem; margin-top: 14px; }
.copyable { user-select: all; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 30px 0; margin-top: 20px; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; color: var(--muted); font-size: .9rem; }
.footer-inner a { color: var(--muted); }

/* Result pages (success/cancel) */
.result-page { display: grid; place-items: center; min-height: 100vh; padding: 24px; }
.result-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 40px; max-width: 520px; text-align: center; }
.result-card h1 { margin-top: 0; }