:root {
  --blue: #3f8fe5;
  --blue-dark: #2875c7;
  --blue-soft: #eaf4ff;
  --text: #34495e;
  --heading: #1f2d3d;
  --muted: #6f7f90;
  --line: #d8e4f0;
  --light: #f4f7fb;
  --lighter: #eef3f9;
  --shadow: 0 12px 32px rgba(43, 97, 153, 0.10);
  --radius: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #ffffff;
  color: var(--text);
  font-family: Arial, "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
img { max-width: 100%; height: auto; }
a { color: var(--blue-dark); }
a:focus-visible, button:focus-visible { outline: 3px solid rgba(63,143,229,.35); outline-offset: 3px; }
button, a { -webkit-tap-highlight-color: transparent; }
.skip-link { position: fixed; left: 14px; top: -80px; z-index: 12000; background: #fff; padding: 10px 14px; border-radius: 8px; box-shadow: var(--shadow); }
.skip-link:focus { top: 14px; }
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 9999;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #e5edf5;
  box-shadow: 0 6px 20px rgba(43,97,153,0.08);
}
.header-inner {
  max-width: 1240px;
  min-height: 70px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.site-logo, .drawer-logo { display: inline-flex; align-items: center; flex: 0 0 auto; }
.site-logo img { display: block; width: auto; max-height: 44px; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 6px; white-space: nowrap; }
.nav-core a { color: var(--text); text-decoration: none; padding: 8px 10px; border-radius: 8px; font-size: 15px; }
.nav-core a:hover, .nav-core a.active { color: var(--blue-dark); background: var(--blue-soft); }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.main-btn, .secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 9px;
  text-decoration: none;
  font-weight: 700;
  position: relative;
  z-index: 2;
  pointer-events: auto;
  touch-action: manipulation;
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.main-btn { color: #fff; background: var(--blue); box-shadow: 0 10px 24px rgba(63,143,229,0.22); }
.main-btn:hover { color: #fff; background: #2f7fd3; transform: translateY(-1px); }
.secondary-btn { color: var(--blue-dark); background: #fff; border: 1px solid #a9caec; }
.secondary-btn:hover { background: var(--blue-soft); border-color: var(--blue); transform: translateY(-1px); }
.menu-toggle { width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 9px; background: #fff; display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; cursor: pointer; position: relative; z-index: 3; }
.menu-toggle span { width: 20px; height: 2px; background: var(--heading); border-radius: 4px; }
.drawer-overlay { position: fixed; inset: 0; background: rgba(16,35,55,.46); z-index: 10000; opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.is-visible { opacity: 1; }
.site-drawer { position: fixed; right: 0; top: 0; bottom: 0; width: min(88vw, 390px); background: #fff; z-index: 10001; padding: 20px; box-shadow: -16px 0 50px rgba(23,58,91,.18); transform: translateX(105%); transition: transform .24s ease; overflow-y: auto; }
.site-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 14px; border-bottom: 1px solid #e5edf5; }
.drawer-logo img { max-height: 40px; width: auto; }
.drawer-close { width: 44px; height: 44px; border: 0; border-radius: 9px; background: var(--light); color: var(--heading); font-size: 30px; line-height: 1; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 10px; padding: 18px 0; }
.drawer-nav a { color: var(--text); text-decoration: none; padding: 10px 12px; border-radius: 8px; background: var(--light); }
.drawer-nav a:hover { color: var(--blue-dark); background: var(--blue-soft); }
.drawer-download { width: 100%; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 82px 0; }
.section-light { background: var(--light); }
.section-soft { background: var(--lighter); }
.section-header { max-width: 760px; margin: 0 auto 38px; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; min-height: 30px; padding: 0 12px; border-radius: 999px; background: var(--blue-soft); color: var(--blue-dark); font-size: 14px; font-weight: 700; letter-spacing: .03em; }
h1, h2, h3, .section-title { color: var(--heading); line-height: 1.28; margin-top: 0; }
h1 { font-size: clamp(34px, 5vw, 58px); letter-spacing: -.03em; }
h2 { font-size: clamp(27px, 3.3vw, 40px); letter-spacing: -.02em; }
h3 { font-size: 21px; }
p { margin: 0 0 1em; }
.lead { color: var(--muted); font-size: 18px; }
.text-link { display: inline-flex; align-items: center; color: #2f83d8; font-weight: 700; text-decoration: none; }
.text-link::after { content: "→"; margin-left: 6px; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(3px); }
.hero { position: relative; overflow: hidden; padding: 82px 0 68px; background: linear-gradient(180deg, #fff 0%, #f8fbff 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none; }
.hero::before { width: 420px; height: 420px; right: -160px; top: -160px; background: rgba(63,143,229,.09); }
.hero::after { width: 260px; height: 260px; left: -130px; bottom: -130px; background: rgba(63,143,229,.06); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(360px, .96fr); align-items: center; gap: 68px; position: relative; z-index: 1; }
.hero-copy { max-width: 660px; }
.hero-copy .lead { max-width: 650px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0 26px; }
.hero-links { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-bottom: 26px; }
.hero-links a { color: var(--blue-dark); text-decoration: none; font-weight: 700; }
.hero-points { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; margin: 0; padding: 0; list-style: none; color: var(--text); }
.hero-points li { position: relative; padding-left: 22px; }
.hero-points li::before { content: ""; position: absolute; left: 0; top: .73em; width: 9px; height: 9px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 5px var(--blue-soft); }
.hero-visual { display: flex; justify-content: center; align-items: center; min-height: 480px; }
.hero-visual img { display: block; width: min(100%, 520px); max-height: 570px; object-fit: contain; filter: drop-shadow(0 26px 36px rgba(34,87,137,.16)); }
.info-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.info-card, .category-card, .review-card, .faq-card, .article-card, .notice-card, .step-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 8px 24px rgba(43,97,153,0.06); }
.info-card { padding: 25px; }
.info-card h3 { margin-bottom: 10px; color: var(--blue-dark); }
.info-card p { color: var(--muted); margin-bottom: 0; }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.category-card { min-height: 190px; padding: 28px; display: flex; flex-direction: column; align-items: flex-start; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.category-card:hover { transform: translateY(-4px); border-color: var(--blue); box-shadow: var(--shadow); }
.category-card h3 { color: var(--blue-dark); margin-bottom: 10px; }
.category-card p { color: var(--muted); flex: 1; }
.category-card.wide { grid-column: 1 / -1; min-height: auto; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .9fr); align-items: center; gap: 64px; }
.split.reverse .visual { order: -1; }
.visual { display: flex; justify-content: center; }
.visual img { max-width: 100%; max-height: 430px; object-fit: contain; display: block; }
.content-list { list-style: none; padding: 0; margin: 22px 0 28px; display: grid; gap: 10px; }
.content-list li { padding-left: 28px; position: relative; }
.content-list li::before { content: "✓"; position: absolute; left: 0; color: var(--blue-dark); font-weight: 800; }
.dual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.article-card { overflow: hidden; }
.article-card .visual { padding: 28px 28px 8px; background: linear-gradient(180deg, #f8fbff, #fff); min-height: 260px; align-items: center; }
.article-card .visual img { max-height: 220px; }
.article-body { padding: 26px 30px 32px; }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.review-card { padding: 25px; }
.review-card p { margin: 0; }
.review-card strong { display: block; color: var(--blue-dark); margin-top: 14px; }
.faq-list { display: grid; gap: 14px; }
details.faq-card { padding: 0; overflow: hidden; }
details.faq-card summary { cursor: pointer; list-style: none; padding: 20px 24px; color: var(--heading); font-weight: 700; display: flex; justify-content: space-between; gap: 20px; }
details.faq-card summary::-webkit-details-marker { display: none; }
details.faq-card summary::after { content: "+"; color: var(--blue-dark); font-size: 24px; line-height: 1; }
details[open].faq-card summary::after { content: "−"; }
details.faq-card .answer { padding: 0 24px 22px; color: var(--muted); }
.notice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.notice-card { padding: 26px; }
.notice-tag { display: inline-block; padding: 4px 10px; border-radius: 999px; background: var(--blue-soft); color: var(--blue-dark); font-size: 13px; font-weight: 700; margin-bottom: 14px; }
.notice-card time { display: block; color: #8c99a8; font-size: 14px; margin-top: 16px; }
.risk-box { padding: 28px 30px; background: #f8fbff; border: 1px solid #bed8f1; border-left: 5px solid var(--blue); border-radius: 12px; }
.risk-box h2, .risk-box h3 { color: var(--blue-dark); }
.cta-band { background: linear-gradient(135deg, #2875c7, #4b9bea); color: #fff; border-radius: 20px; padding: 46px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 30px; box-shadow: var(--shadow); }
.cta-band h2, .cta-band p { color: #fff; }
.cta-band p { opacity: .92; margin-bottom: 0; }
.cta-band .main-btn { background: #fff; color: var(--blue-dark); box-shadow: none; }
.page-hero { padding: 76px 0 58px; background: linear-gradient(180deg, #f6faff 0%, #fff 100%); border-bottom: 1px solid #e5edf5; }
.page-hero .container { max-width: 900px; text-align: center; }
.page-hero h1 { font-size: clamp(34px, 4.5vw, 52px); margin: 16px 0 18px; }
.page-hero .lead { font-size: 19px; }
.prose { max-width: 880px; margin: 0 auto; }
.prose h2 { margin-top: 48px; margin-bottom: 16px; font-size: 30px; }
.prose h3 { margin-top: 30px; margin-bottom: 10px; }
.prose p, .prose li { color: #43586c; }
.prose ul, .prose ol { padding-left: 24px; }
.prose .risk-box { margin: 34px 0; }
.step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 34px 0; }
.step-card { padding: 24px; }
.step-number { width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--blue-soft); color: var(--blue-dark); font-weight: 800; margin-bottom: 14px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; margin: 26px 0; }
table { border-collapse: collapse; width: 100%; min-width: 660px; background: #fff; }
th, td { padding: 15px 16px; border-bottom: 1px solid #e7eef5; text-align: left; vertical-align: top; }
th { background: #f4f8fc; color: var(--heading); }
.badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 0; }
.badge { padding: 7px 12px; border-radius: 999px; background: var(--blue-soft); color: var(--blue-dark); font-size: 14px; font-weight: 700; }
.site-footer { background: #438ddf; color: #fff; margin-top: 0; }
.footer-inner { width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding: 60px 0 38px; display: grid; grid-template-columns: .9fr 1.6fr; gap: 70px; }
.footer-brand img { filter: brightness(0) invert(1); max-height: 44px; width: auto; }
.footer-brand p { color: rgba(255,255,255,.86); margin-top: 18px; max-width: 430px; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.footer-links h2 { font-size: 16px; color: #fff; margin-bottom: 14px; }
.footer-links a { display: block; color: rgba(255,255,255,.88); text-decoration: none; margin: 8px 0; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-risk { width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.22); border-bottom: 1px solid rgba(255,255,255,.22); color: rgba(255,255,255,.9); }
.footer-bottom { width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding: 20px 0 28px; color: rgba(255,255,255,.78); font-size: 14px; }
@media (max-width: 1080px) {
  .nav-core { display: none; }
  .hero-grid { gap: 38px; }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid, .notice-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .section { padding: 64px 0; }
  .hero { padding: 62px 0 52px; }
  .hero-grid, .split, .dual-grid { grid-template-columns: 1fr; gap: 38px; }
  .hero-copy { max-width: none; }
  .hero-visual { min-height: auto; }
  .hero-visual img { max-height: 470px; }
  .split.reverse .visual { order: initial; }
  .category-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .category-card.wide { grid-column: 1 / -1; }
  .step-grid { grid-template-columns: 1fr; }
  .cta-band { grid-template-columns: 1fr; text-align: center; }
  .footer-inner { grid-template-columns: 1fr; gap: 34px; }
}
@media (max-width: 640px) {
  .header-inner { min-height: 62px; padding: 0 12px; gap: 8px; }
  .site-logo img { max-height: 34px; max-width: 128px; }
  .header-actions { gap: 7px; }
  .header-download { min-height: 44px; padding: 0 12px; font-size: 14px; }
  .menu-toggle { width: 44px; height: 44px; }
  .container { width: min(100% - 32px, 1160px); }
  .section { padding: 54px 0; }
  .section-header { margin-bottom: 28px; }
  .hero { padding: 48px 0 42px; }
  h1 { font-size: 36px; }
  h2 { font-size: 29px; }
  .lead { font-size: 17px; }
  .hero-grid { gap: 26px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .hero-actions .main-btn, .hero-actions .secondary-btn { width: 100%; }
  .hero-links { gap: 8px 15px; font-size: 14px; }
  .hero-points { grid-template-columns: 1fr; }
  .hero-visual img { max-height: 390px; }
  .info-grid, .category-grid, .review-grid, .notice-grid { grid-template-columns: 1fr; gap: 16px; }
  .category-card.wide { grid-column: auto; }
  .category-card { min-height: auto; padding: 24px; }
  .article-body { padding: 24px; }
  .article-card .visual { min-height: 220px; }
  .cta-band { padding: 32px 22px; border-radius: 16px; }
  .page-hero { padding: 50px 0 38px; }
  .page-hero .lead { font-size: 17px; }
  .prose h2 { font-size: 27px; margin-top: 38px; }
  .risk-box { padding: 23px 22px; }
  .drawer-nav { grid-template-columns: 1fr; }
  .footer-inner, .footer-risk, .footer-bottom { width: min(100% - 32px, 1160px); }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 24px 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}