:root {
  --bg: #f5f8fc;
  --surface: #ffffff;
  --surface-2: #eef4fb;
  --text: #142033;
  --muted: #5f6f85;
  --line: #dfe7f1;
  --brand: #1f6feb;
  --brand-dark: #1455b7;
  --accent: #eff6ff;
  --shadow: 0 18px 50px rgba(17, 38, 72, 0.08);
  --radius: 20px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1rem; }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 1rem; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(840px, 100%); }
.topbar {
  background: #0e1b2d;
  color: #fff;
  text-align: center;
  padding: 10px 16px;
  font-size: 14px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(223,231,241,0.9);
}
.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 74px;
  gap: 20px;
}
.brand { font-size: 24px; font-weight: 800; letter-spacing: -0.03em; color: #0f2447; }
.nav { display: flex; gap: 22px; flex-wrap: wrap; }
.nav a { color: var(--muted); font-weight: 600; }
.nav a:hover { color: var(--brand); }
.hero, .article-hero { padding: 72px 0 40px; }
.hero-grid, .article-hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: center;
}
.eyebrow {
  display: inline-block;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--brand);
  font-weight: 800;
  margin-bottom: 12px;
}
.lead { font-size: 18px; color: var(--muted); max-width: 760px; }
.hero h1, .article-hero h1 { font-size: clamp(38px, 5vw, 62px); letter-spacing: -0.05em; margin-bottom: 18px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin: 28px 0; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: .2s ease;
  border: 1px solid transparent;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-secondary { background: #fff; border-color: var(--line); color: var(--text); }
.full { width: 100%; }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-card, .product-panel, .sticky-card, .metric-card, .feature-box { height: 100%; }
.metric-card, .product-panel, .sticky-card, .prose, .article, .small-card, .feature-grid, .disclosure-panel { padding: 28px; }
.metric-label { color: var(--muted); font-weight: 700; margin-bottom: 16px; }
.metric-list { display: grid; gap: 16px; }
.metric-list div { display: grid; gap: 4px; padding: 14px 0; border-top: 1px solid var(--line); }
.metric-list div:first-child { border-top: 0; padding-top: 0; }
.metric-list strong { font-size: 18px; }
.metric-list span { color: var(--muted); }
.trust-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.trust-row span, .meta-row span {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--muted);
}
.section { padding: 26px 0 52px; }
.section-muted { background: linear-gradient(180deg, rgba(239,244,251,.7), rgba(245,248,252,0)); }
.section-head { margin-bottom: 20px; }
.section-head h2 { font-size: clamp(28px, 4vw, 42px); letter-spacing: -0.04em; }
.feature-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: center;
}
.label {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border-radius: 999px;
  background: #e8f0ff;
  color: var(--brand-dark);
  font-weight: 800;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 14px;
}
.label.neutral { background: #f0f4f8; color: #4b607c; }
.clean-list { padding-left: 18px; color: var(--muted); margin: 0 0 24px; }
.clean-list li { margin-bottom: 10px; }
.clean-list.compact { margin-bottom: 18px; }
.feature-box {
  padding: 28px;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #f3f8ff, #e6eef8);
  border-radius: 24px;
}
.device-illustration {
  position: relative;
  width: 280px;
  height: 180px;
  background: #fff;
  border-radius: 22px;
  border: 1px solid #d8e3f0;
  box-shadow: 0 16px 35px rgba(16, 48, 93, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
}
.screen {
  font-size: 54px;
  font-weight: 800;
  color: #183b73;
}
.screen span { font-size: 28px; color: #6580a8; }
.cuff {
  position: absolute;
  right: -46px;
  top: 50%;
  transform: translateY(-50%);
  width: 90px;
  height: 90px;
  border-radius: 22px;
  background: linear-gradient(180deg, #213551, #0f1a2d);
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.small-card h3 { font-size: 22px; letter-spacing: -0.03em; }
.small-card p { color: var(--muted); }
.disclosure-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.site-footer {
  margin-top: 30px;
  background: #0d1726;
  color: rgba(255,255,255,0.82);
  padding: 48px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr .8fr .8fr;
  gap: 28px;
}
.brand-footer { color: #fff; display: inline-block; margin-bottom: 10px; }
.site-footer h4 { color: #fff; margin-bottom: 12px; }
.site-footer a { display: block; margin-bottom: 10px; color: rgba(255,255,255,.8); }
.footer-bottom { margin-top: 24px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12); font-size: 14px; }
.page-main { min-height: calc(100vh - 180px); }
.prose { padding: 34px; }
.prose h1 { font-size: clamp(32px, 4vw, 48px); letter-spacing: -0.05em; }
.prose h2 { margin-top: 28px; font-size: 26px; letter-spacing: -0.03em; }
.prose p { color: #304155; }
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 24px;
  align-items: start;
}
.article { padding: 34px; }
.article h2 { font-size: 30px; letter-spacing: -0.04em; margin-top: 28px; }
.article h3 { font-size: 22px; letter-spacing: -0.03em; }
.article p { color: #32455d; }
.notice {
  background: #f4f8ff;
  border: 1px solid #d9e4f4;
  padding: 14px 16px;
  border-radius: 14px;
  font-size: 14px;
}
.quote-box {
  padding: 20px 22px;
  border-left: 4px solid var(--brand);
  background: #f7fbff;
  border-radius: 16px;
  margin: 20px 0;
}
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 24px 0;
}
.info-grid > div {
  padding: 20px;
  border-radius: 18px;
  background: var(--surface-2);
  border: 1px solid #dbe5f1;
}
.cta-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  background: linear-gradient(180deg, #f4f8ff, #edf4fd);
  border: 1px solid #dbe5f2;
  border-radius: 18px;
  padding: 24px;
  margin-top: 28px;
}
.sidebar { position: relative; }
.sticky-card { position: sticky; top: 94px; }
.side-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.side-links a { color: var(--muted); font-weight: 600; }
.meta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 20px; }
.fine-print { color: var(--muted); font-size: 13px; }
@media (max-width: 960px) {
  .hero-grid, .article-hero-grid, .feature-grid, .footer-grid, .article-layout, .card-grid, .info-grid, .disclosure-panel {
    grid-template-columns: 1fr;
  }
  .sticky-card { position: static; }
  .hero h1, .article-hero h1 { font-size: clamp(34px, 9vw, 48px); }
}
@media (max-width: 640px) {
  .nav-wrap { flex-direction: column; align-items: flex-start; padding: 14px 0; }
  .nav { gap: 14px; }
  .metric-card, .product-panel, .sticky-card, .prose, .article, .small-card, .feature-grid, .disclosure-panel { padding: 22px; }
  .btn { width: 100%; }
  .hero-actions { flex-direction: column; }
  .cta-box { flex-direction: column; align-items: stretch; }
}