:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-2: #eef3f8;
  --text: #12202f;
  --muted: #526173;
  --border: #d7e0ea;
  --accent: #1d7fd8;
  --accent-2: #0f5ea8;
  --good: #1a7f46;
  --warn: #b36b00;
  --danger: #b42318;
  --shadow: 0 12px 30px rgba(18, 32, 47, 0.08);
  --radius: 22px;
  --maxw: 1140px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #fbfdff 0%, var(--bg) 55%, #eef3f8 100%);
  line-height: 1.65;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
.container { width: min(100% - 32px, var(--maxw)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(246,248,251,0.82);
  border-bottom: 1px solid rgba(215,224,234,0.9);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 16px 0; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); font-weight: 800; letter-spacing: 0.02em; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 14px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), #5aa9ff);
  color: white; font-weight: 900; box-shadow: var(--shadow);
}
.nav { display: flex; flex-wrap: wrap; gap: 12px; justify-content: flex-end; }
.nav a { color: var(--muted); font-weight: 600; padding: 8px 10px; border-radius: 12px; }
.nav a:hover, .nav a.active { background: rgba(29,127,216,0.1); color: var(--accent-2); text-decoration: none; }
.hero { padding: 56px 0 18px; }
.hero-grid {
  display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 24px; align-items: stretch;
}
.hero-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.94), rgba(255,255,255,0.88));
  border: 1px solid var(--border);
  border-radius: 30px;
  box-shadow: var(--shadow);
  padding: 34px;
}
.kicker { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px; background: rgba(29,127,216,0.10); color: var(--accent-2); font-weight: 700; font-size: 0.95rem; }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 14px; }
h1 { font-size: clamp(2.25rem, 5vw, 4rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.65rem, 3vw, 2.45rem); letter-spacing: -0.02em; }
p.lead { font-size: 1.08rem; color: var(--muted); max-width: 65ch; }
.hero-meta { display: grid; gap: 12px; }
.meta-card { background: rgba(255,255,255,0.88); border: 1px solid var(--border); border-radius: 24px; padding: 18px; box-shadow: var(--shadow); }
.meta-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
.meta-card p { margin: 0; color: var(--muted); }
.section { padding: 18px 0 48px; }
.panel { background: rgba(255,255,255,0.92); border: 1px solid var(--border); border-radius: 28px; box-shadow: var(--shadow); padding: 28px; }
.grid { display: grid; gap: 18px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.callout {
  border-radius: 24px; padding: 24px; background: linear-gradient(180deg, #eaf3fb, #f7fbff);
  border: 1px solid #cfe0f1;
}
.callout.danger { background: linear-gradient(180deg, #fff3f1, #fffdfd); border-color: #f2cbc5; }
.callout.good { background: linear-gradient(180deg, #edf8f0, #fbfffc); border-color: #cae8d1; }
.callout h3 { margin-bottom: 10px; }
.start-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 12px; }
.start-list li {
  display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: 18px; background: white; border: 1px solid var(--border);
}
.start-list .num {
  flex: 0 0 auto; width: 30px; height: 30px; border-radius: 999px; display: grid; place-items: center;
  background: rgba(29,127,216,0.12); color: var(--accent-2); font-weight: 800;
}
.start-list strong { display: block; margin-bottom: 4px; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.card {
  background: white; border: 1px solid var(--border); border-radius: 22px; padding: 18px; box-shadow: var(--shadow);
  min-height: 160px; display: flex; flex-direction: column;
}
.card h3 { font-size: 1.08rem; margin-bottom: 10px; }
.card p { color: var(--muted); margin: 0 0 14px; }
.card .actions { margin-top: auto; }
.tag { display: inline-block; padding: 5px 10px; border-radius: 999px; background: rgba(29,127,216,0.10); color: var(--accent-2); font-size: 0.86rem; font-weight: 700; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 18px; border-radius: 14px; border: 1px solid var(--border);
  font-weight: 700; text-decoration: none !important;
}
.btn.primary { background: linear-gradient(135deg, var(--accent), #56a3ff); color: white; border-color: transparent; }
.btn.secondary { background: white; color: var(--text); }
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.page-hero { padding: 42px 0 10px; }
.breadcrumbs { color: var(--muted); font-size: 0.95rem; margin-bottom: 12px; }
.breadcrumbs a { color: var(--muted); }
.content { padding-bottom: 52px; }
.content h2 { margin-top: 18px; }
.content h3 { margin-top: 22px; font-size: 1.2rem; }
.content ul { padding-left: 1.2rem; }
.content li { margin: 10px 0; }
.note {
  border-left: 4px solid var(--accent); background: #f3f8fd; padding: 14px 16px; border-radius: 12px; color: var(--muted);
}
.footer { padding: 28px 0 54px; color: var(--muted); }
.footer .panel { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px; align-items: center; }
.small { font-size: 0.95rem; color: var(--muted); }
.sitemap { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 18px; }
.sitemap a { color: var(--text); font-weight: 600; }
@media (max-width: 960px) {
  .hero-grid, .cards, .grid.cols-2, .grid.cols-3, .grid.cols-4, .sitemap { grid-template-columns: 1fr; }
  .header-inner { flex-direction: column; align-items: flex-start; }
  .nav { justify-content: flex-start; }
}