:root {
  color-scheme: light;
  --ink: #111317;
  --muted: #68707d;
  --line: #e7e9ee;
  --panel: #ffffff;
  --soft: #f4f6f8;
  --accent: #315fdf;
  --accent-soft: #edf2ff;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: #f6f7f9;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(17, 19, 23, .08);
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(1040px, calc(100% - 40px));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 11px; color: var(--ink); font-weight: 760; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(145deg, #15171b, #40516d);
  box-shadow: 0 7px 18px rgba(19, 27, 45, .18);
  font-size: 18px;
}

.nav-links { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav-links a { color: #4d5562; }
.nav-links a[aria-current="page"] { color: var(--ink); font-weight: 700; }

main { width: min(1040px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0 96px; }

.hero {
  padding: 54px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: linear-gradient(135deg, #fff 20%, #f1f5ff 100%);
  box-shadow: 0 20px 60px rgba(24, 34, 55, .08);
}

.eyebrow { margin: 0 0 14px; color: var(--accent); font-size: 14px; font-weight: 760; letter-spacing: .08em; }
h1 { margin: 0; font-size: clamp(34px, 5vw, 58px); line-height: 1.16; letter-spacing: -.035em; }
.lead { max-width: 780px; margin: 18px 0 0; color: #4f5866; font-size: 18px; }
.meta { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 24px; color: var(--muted); font-size: 13px; }

.section-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 28px; }
.card, .content-section {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: 0 12px 36px rgba(28, 37, 54, .05);
}
.card { padding: 28px; }
.card h2 { margin: 0 0 8px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); }
.card .action { display: inline-flex; margin-top: 18px; font-weight: 700; }

.content-section { margin-top: 18px; padding: 34px 38px; scroll-margin-top: 92px; }
.content-section h2 { margin: 0 0 14px; font-size: 25px; line-height: 1.32; }
.content-section h3 { margin: 28px 0 8px; font-size: 18px; }
.content-section p { margin: 8px 0; color: #4f5866; }
.content-section ul { margin: 10px 0 0; padding-left: 1.3em; color: #4f5866; }
.content-section li + li { margin-top: 7px; }

.notice { margin-top: 18px; padding: 18px 20px; border-radius: 16px; background: var(--accent-soft); color: #294b9e; }

.data-table { width: 100%; margin-top: 14px; border-collapse: collapse; font-size: 14px; }
.data-table th, .data-table td { padding: 14px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.data-table th { color: #444d5b; background: var(--soft); }
.data-table tr:last-child td { border-bottom: 0; }

.contact-box { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.contact-button {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  color: #fff;
  background: var(--ink);
  font-weight: 700;
}
.contact-button:hover { color: #fff; text-decoration: none; opacity: .88; }

footer { padding: 30px 20px 48px; color: #7a818c; text-align: center; font-size: 13px; }

@media (max-width: 720px) {
  .nav { width: min(100% - 28px, 1040px); min-height: 60px; }
  .nav-links { gap: 14px; }
  main { width: min(100% - 28px, 1040px); padding: 34px 0 60px; }
  .hero { padding: 30px 24px; border-radius: 22px; }
  .lead { font-size: 16px; }
  .section-grid { grid-template-columns: 1fr; }
  .content-section { padding: 26px 22px; border-radius: 19px; }
  .contact-box { align-items: flex-start; flex-direction: column; }
  .data-table { display: block; overflow-x: auto; white-space: nowrap; }
}