:root {
  --navy: #102f43;
  --blue: #08689f;
  --blue-dark: #064d79;
  --orange: #f15a29;
  --gold: #f5a623;
  --ink: #183243;
  --muted: #5d7180;
  --line: #d9e6ee;
  --soft: #eef6fb;
  --white: #ffffff;
  --shadow: 0 14px 38px rgba(16, 47, 67, .10);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #f7fafc;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Noto Sans JP", sans-serif;
  font-size: 17px;
  line-height: 1.72;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--blue); }
a:hover { color: var(--orange); }
.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -100px; z-index: 100; padding: 10px 16px; color: #fff; background: var(--navy); border-radius: 8px; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 30; border-bottom: 1px solid rgba(217, 230, 238, .9); background: rgba(255,255,255,.96); backdrop-filter: blur(12px); }
.header-row { min-height: 76px; display: flex; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--navy); font-weight: 850; font-size: 21px; text-decoration: none; white-space: nowrap; }
.brand-mark { width: 40px; height: 40px; display: grid; place-items: center; color: #fff; background: linear-gradient(145deg, var(--orange), var(--gold)); border-radius: 12px 12px 12px 4px; box-shadow: 0 7px 18px rgba(241,90,41,.25); font-size: 23px; font-weight: 900; }
.main-nav { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.main-nav a { padding: 9px 12px; color: #385160; border-radius: 10px; font-size: 15px; font-weight: 700; text-decoration: none; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--blue); background: var(--soft); }
.language-nav { display: flex; align-items: center; gap: 5px; }
.language-nav a { min-width: 35px; padding: 7px 8px; color: #526a78; border: 1px solid var(--line); border-radius: 999px; font-size: 12px; font-weight: 800; text-align: center; text-decoration: none; }
.language-nav a:hover, .language-nav a[aria-current="true"] { color: #fff; border-color: var(--blue); background: var(--blue); }
.header-cta { padding: 10px 16px; color: #fff; background: var(--orange); border-radius: 999px; font-size: 14px; font-weight: 800; text-decoration: none; white-space: nowrap; }
.header-cta:hover { color: #fff; background: #d94617; }

.hero { padding: 64px 0 36px; color: #fff; background: radial-gradient(circle at 87% 12%, rgba(245,166,35,.24), transparent 28%), linear-gradient(135deg, #074e79, #0877ae 64%, #075b8c); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(340px, .95fr); align-items: center; gap: 44px; }
.eyebrow { margin: 0 0 12px; color: #ffd68a; font-size: 14px; font-weight: 850; letter-spacing: .09em; text-transform: uppercase; }
.hero h1 { max-width: 780px; margin: 0 0 18px; font-size: clamp(38px, 5.2vw, 66px); line-height: 1.05; letter-spacing: -.035em; }
.hero .lede { max-width: 720px; margin: 0 0 26px; color: #e1f3fd; font-size: clamp(18px, 2vw, 21px); }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 49px; padding: 12px 20px; border: 1px solid transparent; border-radius: 999px; font-weight: 850; text-decoration: none; }
.button.primary { color: #fff; background: var(--orange); box-shadow: 0 10px 24px rgba(241,90,41,.25); }
.button.primary:hover { color: #fff; background: #d9471b; }
.button.secondary { color: #fff; border-color: rgba(255,255,255,.45); background: rgba(255,255,255,.08); }
.button.secondary:hover { color: #fff; background: rgba(255,255,255,.16); }
.hero-media { position: relative; padding: 12px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.25); border-radius: 22px; box-shadow: 0 24px 60px rgba(2,32,50,.30); transform: rotate(1deg); }
.hero-media img { width: 100%; border-radius: 14px; }
.disclosure { margin: 24px 0 0; color: #bfdfef; font-size: 13px; }

.stats-wrap { margin-top: -1px; padding: 26px 0; background: #fff; border-bottom: 1px solid var(--line); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.stat { padding: 15px 18px; border-left: 3px solid var(--gold); background: #fbfdff; border-radius: 0 12px 12px 0; }
.stat strong { display: block; color: var(--navy); font-size: 24px; line-height: 1.2; }
.stat span { color: var(--muted); font-size: 13px; }

.section { padding: 72px 0; }
.section.soft { background: var(--soft); }
.section.dark { color: #fff; background: var(--navy); }
.section-head { max-width: 760px; margin: 0 auto 34px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.section h2, .article h1 { margin-top: 0; color: var(--navy); font-size: clamp(30px, 4vw, 44px); line-height: 1.16; letter-spacing: -.025em; }
.section.dark h2 { color: #fff; }
.section-head p { color: var(--muted); font-size: 18px; }
.section.dark .section-head p { color: #c7dbe7; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { height: 100%; padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 8px 24px rgba(16,47,67,.06); }
.card h3 { margin: 13px 0 8px; color: var(--navy); font-size: 21px; line-height: 1.3; }
.card p { margin: 0; color: var(--muted); }
.icon { width: 47px; height: 47px; display: grid; place-items: center; color: var(--blue); background: #e8f4fb; border-radius: 14px; font-size: 23px; font-weight: 900; }

.evidence-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 24px; align-items: start; }
.evidence-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.evidence-card img { width: 100%; }
.evidence-copy { padding: 20px 22px 23px; }
.evidence-copy h3 { margin: 0 0 7px; color: var(--navy); }
.evidence-copy p { margin: 0; color: var(--muted); font-size: 15px; }
.note { margin-top: 20px; padding: 15px 18px; color: #536b79; border-left: 4px solid var(--gold); background: #fff9eb; border-radius: 0 10px 10px 0; font-size: 14px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 8px 24px rgba(16,47,67,.06); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 15px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: #fff; background: var(--blue); font-size: 14px; letter-spacing: .02em; }
tbody tr:nth-child(even) { background: #f7fbfd; }
tbody tr:last-child td { border-bottom: 0; }
.yes { color: #167647; font-weight: 800; }
.no { color: #a3462d; }
.plan-layout { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(340px, .95fr); gap: 30px; align-items: center; }
.plan-layout figure { margin: 0; padding: 14px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.plan-layout img { width: 100%; border-radius: 10px; }
.caption { margin: 10px 4px 0; color: var(--muted); font-size: 13px; }

.security-grid { display: grid; grid-template-columns: minmax(250px, .55fr) minmax(0, 1.45fr); gap: 38px; align-items: center; }
.security-grid img { max-height: 410px; margin: auto; object-fit: contain; border-radius: 18px; }
.check-list { margin: 20px 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; margin: 10px 0; padding-left: 29px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--gold); font-weight: 900; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: step; }
.step { padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.step::before { counter-increment: step; content: counter(step); width: 40px; height: 40px; display: grid; place-items: center; color: #fff; background: var(--orange); border-radius: 50%; font-weight: 900; }
.step h3 { margin: 14px 0 7px; color: var(--navy); }
.step p { margin: 0; color: var(--muted); }
.closing-grid { display: grid; grid-template-columns: 1fr minmax(260px, .62fr); gap: 36px; align-items: center; }
.closing-grid img { border-radius: var(--radius); box-shadow: var(--shadow); }
.cta-band { padding: 54px 0; color: #fff; background: linear-gradient(120deg, var(--blue-dark), var(--blue)); }
.cta-row { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.cta-row h2 { margin: 0 0 8px; font-size: clamp(28px, 4vw, 42px); line-height: 1.15; }
.cta-row p { margin: 0; color: #d7edf8; }

.page-hero { padding: 58px 0 46px; color: #fff; background: linear-gradient(135deg, var(--navy), var(--blue)); }
.page-hero .eyebrow { color: #ffd68a; }
.page-hero h1 { max-width: 850px; margin: 0 0 12px; font-size: clamp(38px, 5vw, 58px); line-height: 1.08; }
.page-hero p { max-width: 760px; margin: 0; color: #d8edf7; font-size: 19px; }
.article-wrap { padding: 56px 0 76px; }
.article { max-width: 900px; margin: 0 auto; padding: clamp(25px, 5vw, 52px); border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: var(--shadow); }
.article h2 { margin: 42px 0 12px; color: var(--navy); font-size: 28px; line-height: 1.25; }
.article h2:first-child { margin-top: 0; }
.article h3 { margin: 28px 0 8px; color: var(--navy); }
.article p, .article li { color: #415967; }
.article ul, .article ol { padding-left: 24px; }
.meta-line { margin: -2px 0 28px; color: var(--muted); font-size: 14px; }
.callout { margin: 25px 0; padding: 20px 22px; border: 1px solid #f1dfae; border-radius: 14px; background: #fff9e9; }
.callout strong { color: var(--navy); }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 24px 0 32px; }
.metric { padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--soft); }
.metric strong { display: block; color: var(--blue); font-size: 26px; }
.metric span { color: var(--muted); font-size: 13px; }
.faq-list { display: grid; gap: 12px; }
details { border: 1px solid var(--line); border-radius: 14px; background: #fff; overflow: hidden; }
summary { padding: 18px 22px; color: var(--navy); cursor: pointer; font-weight: 800; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; float: right; color: var(--blue); font-size: 22px; line-height: 1; }
details[open] summary::after { content: "−"; }
details[open] summary { background: var(--soft); }
details p { margin: 0; padding: 18px 22px 22px; color: #415967; }
.email-card { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--soft); text-align: center; }
.email-card a { color: var(--blue); font-size: clamp(22px, 4vw, 34px); font-weight: 850; text-decoration: none; word-break: break-word; }

.site-footer { padding: 48px 0 30px; color: #cbd9e1; background: #0c2738; }
.footer-grid { display: grid; grid-template-columns: 1.25fr .75fr .75fr; gap: 30px; }
.footer-title { color: #fff; font-size: 19px; font-weight: 850; }
.footer-grid p { max-width: 540px; margin: 10px 0; color: #aebfca; font-size: 14px; }
.footer-links { display: grid; gap: 7px; align-content: start; }
.footer-links a { color: #d7e4eb; font-size: 14px; text-decoration: none; }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 35px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); color: #91a6b3; font-size: 13px; }

.not-found { min-height: 100vh; display: grid; place-items: center; padding: 30px; text-align: center; background: linear-gradient(145deg, #edf7fc, #fff); }
.not-found-card { width: min(680px, 100%); padding: 48px; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: var(--shadow); }
.not-found-code { color: var(--orange); font-size: clamp(70px, 15vw, 120px); font-weight: 900; line-height: 1; }
.not-found h1 { margin: 10px 0; color: var(--navy); }

@media (max-width: 980px) {
  .header-row { flex-wrap: wrap; padding: 12px 0; }
  .main-nav { order: 3; width: 100%; margin: 0; justify-content: center; border-top: 1px solid var(--line); padding-top: 8px; }
  .hero-grid, .plan-layout { grid-template-columns: 1fr; }
  .hero-media { max-width: 760px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .card-grid, .steps { grid-template-columns: repeat(2, 1fr); }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 700px) {
  body { font-size: 16px; }
  .container { width: min(100% - 28px, 1180px); }
  .brand { font-size: 18px; }
  .brand-mark { width: 36px; height: 36px; }
  .header-cta { display: none; }
  .language-nav { margin-left: auto; }
  .main-nav { justify-content: flex-start; overflow-x: auto; }
  .main-nav a { padding: 8px 9px; white-space: nowrap; }
  .hero { padding-top: 44px; }
  .hero-grid { gap: 28px; }
  .stats, .card-grid, .evidence-grid, .steps, .security-grid, .closing-grid, .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 54px 0; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .cta-row { align-items: flex-start; flex-direction: column; }
  .footer-bottom { flex-direction: column; }
  th, td { min-width: 150px; padding: 12px 14px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }