:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #5d6678;
  --line: #dce3ef;
  --soft: #f7f8fc;
  --panel: #ffffff;
  --blue: #2563eb;
  --violet: #6d5bd0;
  --green: #0f766e;
  --amber: #b45309;
  --shadow: 0 16px 36px rgba(23, 32, 51, .08);
}
* { box-sizing: border-box; }
html { overflow-x: hidden; }
body { margin: 0; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--ink); background: var(--soft); line-height: 1.75; letter-spacing: 0; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }
.site-header { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 14px clamp(16px, 4vw, 44px); background: rgba(255,255,255,.95); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 220px; }
.brand-mark { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 8px; color: white; background: linear-gradient(135deg, var(--blue), var(--violet), var(--green)); font-weight: 800; }
.brand strong { display: block; font-size: 18px; line-height: 1.2; }
.brand small { display: block; color: var(--muted); font-size: 12px; line-height: 1.3; }
.global-nav { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.global-nav a, .hero-actions a { border: 1px solid var(--line); background: #fff; padding: 8px 12px; border-radius: 8px; font-weight: 700; font-size: 14px; }
.hero { background: linear-gradient(180deg, #ffffff 0%, #eef5ff 100%); border-bottom: 1px solid var(--line); }
.hero-inner { max-width: 1040px; margin: 0 auto; padding: clamp(42px, 8vw, 76px) clamp(18px, 4vw, 24px); }
.compact-hero .hero-inner { padding-top: clamp(34px, 6vw, 58px); padding-bottom: clamp(34px, 6vw, 58px); }
.eyebrow { color: var(--green); font-weight: 800; margin: 0 0 12px; }
h1 { max-width: 920px; margin: 0; font-size: clamp(32px, 5vw, 56px); line-height: 1.18; letter-spacing: 0; overflow-wrap: anywhere; }
.lead { max-width: 820px; color: var(--muted); font-size: 18px; margin: 18px 0 0; overflow-wrap: anywhere; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.page-shell { max-width: 1040px; margin: 0 auto; padding: 28px clamp(18px, 4vw, 24px) 52px; }
.content-section, .notice-box { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); padding: clamp(20px, 4vw, 30px); margin-top: 18px; min-width: 0; }
.content-section h2 { margin: 0 0 10px; line-height: 1.35; font-size: 22px; letter-spacing: 0; }
.content-section p, .notice-box p { color: var(--muted); }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 14px; }
.guide-card, .next-link { display: block; min-width: 0; border: 1px solid var(--line); border-radius: 8px; background: #fbfdff; padding: 16px; }
.guide-card span, .next-link span { display: block; font-weight: 800; color: var(--ink); margin-bottom: 6px; overflow-wrap: anywhere; }
.guide-card small, .next-link small { display: block; color: var(--muted); font-size: 14px; line-height: 1.65; }
.link-list { display: grid; gap: 10px; margin-top: 14px; }
.check-list { display: grid; gap: 8px; margin: 10px 0 0; padding-left: 1.25rem; color: var(--muted); }
.notice-box { border-left: 5px solid var(--amber); }
.notice-box strong { display: block; margin-bottom: 6px; }
.simple-table { max-width: 100%; overflow-x: auto; margin-top: 14px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.simple-table table { width: 100%; border-collapse: collapse; min-width: 640px; }
.simple-table th, .simple-table td { padding: 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.simple-table th { background: #eef5ff; font-weight: 800; }
.faq-list { display: grid; gap: 10px; margin-top: 14px; }
.faq-list details { border: 1px solid var(--line); border-radius: 8px; background: #fbfdff; padding: 12px 14px; }
.faq-list summary { cursor: pointer; font-weight: 800; }
.faq-list p { margin-top: 8px; }
.site-footer { background: #172033; color: #fff; padding: 30px clamp(18px, 4vw, 44px); }
.footer-note { max-width: 960px; }
.footer-note p { color: #d7deea; margin: 6px 0 18px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 10px 16px; }
.site-footer a { color: #eef5ff; text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 820px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .global-nav { justify-content: flex-start; }
  .global-nav a { font-size: 13px; padding: 7px 10px; }
  .card-grid { grid-template-columns: 1fr; }
  h1 { font-size: 32px; max-width: calc(100vw - 40px); }
  .lead { font-size: 16px; max-width: calc(100vw - 40px); }
  .simple-table table { min-width: 560px; }
}