:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-soft: #f8fbff;
  --text: #142033;
  --muted: #5c697d;
  --line: #dbe4ef;
  --accent: #0b6bcb;
  --accent-strong: #084f97;
  --success: #0f7b4d;
  --warn: #9a6700;
  --danger: #a12b2b;
  --shadow: 0 24px 60px rgba(17, 29, 53, 0.08);
  --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  background: radial-gradient(circle at top, #eef5ff 0%, var(--bg) 40%, #eef2f7 100%);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
p { line-height: 1.7; }
.site-shell { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 24px 0 48px; }
.topbar, .footer {
  display: flex; justify-content: space-between; align-items: center; gap: 20px;
}
.topbar { margin-bottom: 28px; }
.brand { font-weight: 800; font-size: 1.2rem; letter-spacing: -0.03em; }
.topnav, .footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.topnav a, .footer-links a { color: var(--muted); font-weight: 600; }
.card {
  background: var(--surface);
  border: 1px solid rgba(219, 228, 239, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-soft { background: linear-gradient(180deg, #f9fbff 0%, #f4f8ff 100%); }
.hero {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 24px; padding: 34px; margin-bottom: 24px;
}
.eyebrow, .section-kicker {
  margin: 0 0 12px; color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.78rem;
}
.hero h1, .section-head h2 { margin: 0; line-height: 1.1; letter-spacing: -0.04em; }
.hero h1 { font-size: clamp(2.2rem, 6vw, 4.3rem); max-width: 13ch; }
.lead { font-size: 1.08rem; color: var(--muted); max-width: 68ch; }
.hero-actions, .form-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 26px 0 12px; }
.button {
  border: none; border-radius: 999px; padding: 14px 18px; font-weight: 700; cursor: pointer; transition: 0.2s ease;
}
.button:hover { transform: translateY(-1px); }
.button-primary { background: linear-gradient(135deg, var(--accent) 0%, #1480dd 100%); color: white; }
.button-secondary { background: #edf4fd; color: var(--accent-strong); }
.support-line, .muted, .small-note, .disclaimer { color: var(--muted); }
.hero-panel { padding: 24px; }
.hero-panel h2 { margin-top: 0; font-size: 1.35rem; letter-spacing: -0.03em; }
.bullet-list { margin: 0; padding-left: 18px; color: var(--text); }
.bullet-list li { margin-bottom: 10px; line-height: 1.6; }
.grid-three, .grid-two, .steps-grid, .checker-layout, .result-grid, .result-panels {
  display: grid; gap: 24px;
}
.grid-three { grid-template-columns: repeat(3, 1fr); margin-bottom: 24px; }
.grid-two { grid-template-columns: repeat(2, 1fr); margin: 24px 0; }
.grid-three .card, .grid-two .card, .faq-block, .section-block { padding: 28px; }
.section-head.compact { margin-bottom: 18px; }
.section-head h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); }
.steps-grid { grid-template-columns: repeat(4, 1fr); margin-top: 24px; }
.steps-grid div { padding: 20px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface-soft); }
.steps-grid span {
  width: 38px; height: 38px; display: inline-grid; place-items: center; border-radius: 50%; background: #d9ecff; color: var(--accent-strong); font-weight: 800;
}
.steps-grid h3 { margin-bottom: 10px; }
.checker-layout { grid-template-columns: 1.1fr 0.9fr; align-items: start; margin-bottom: 24px; }
.checker-card, .results-card { padding: 28px; position: sticky; top: 18px; }
.checker-form { display: grid; gap: 16px; }
label span { display: block; margin-bottom: 8px; font-weight: 700; }
select {
  width: 100%; padding: 14px 16px; border: 1px solid var(--line); border-radius: 16px; background: white; font: inherit; color: var(--text);
}
.result-grid { grid-template-columns: repeat(2, 1fr); margin-bottom: 20px; }
.result-box {
  padding: 18px; border-radius: 20px; background: linear-gradient(180deg, #f9fbff 0%, #f3f8ff 100%); border: 1px solid #d9e8fb;
}
.result-box span { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 8px; }
.result-box strong { font-size: 1.1rem; line-height: 1.4; }
.result-panels { grid-template-columns: 1fr; }
.result-panel { padding: 20px; border-radius: 20px; border: 1px solid var(--line); background: #fbfdff; }
.result-panel h3 { margin-top: 0; }
#checklist { margin: 0; padding-left: 18px; }
#checklist li { margin-bottom: 8px; line-height: 1.5; }
.toast {
  margin-top: 14px; padding: 12px 14px; border-radius: 14px; background: #ecfff5; color: var(--success); border: 1px solid #c9f0da; font-weight: 700;
}
.faq-list { display: grid; gap: 14px; }
details {
  border: 1px solid var(--line); border-radius: 18px; padding: 16px 18px; background: #fbfdff;
}
summary { cursor: pointer; font-weight: 700; }
.footer {
  margin-top: 28px; padding: 28px 0 12px; border-top: 1px solid rgba(219, 228, 239, 0.9); color: var(--muted);
}
.page-main { display: grid; gap: 24px; }
.page-hero, .content-card { padding: 28px; }
.content-card h2, .content-card h3 { letter-spacing: -0.03em; }
.content-card ul { padding-left: 18px; }
@media (max-width: 980px) {
  .hero, .checker-layout, .grid-three, .grid-two, .steps-grid { grid-template-columns: 1fr; }
  .checker-card, .results-card { position: static; }
}
@media (max-width: 640px) {
  .site-shell { width: min(100% - 20px, 1180px); }
  .hero, .grid-three .card, .grid-two .card, .checker-card, .results-card, .faq-block, .section-block, .page-hero, .content-card { padding: 22px; }
  .topbar, .footer { flex-direction: column; align-items: flex-start; }
  .result-grid { grid-template-columns: 1fr; }
}