:root {
  --ink: #17364b;
  --ink-soft: #426274;
  --muted: #6d8491;
  --aqua: #0a9bad;
  --aqua-deep: #087887;
  --mint: #36b89c;
  --pale: #edf9fb;
  --line: #cde8ec;
  --paper: #ffffff;
  --canvas: #f7fcfd;
  --warn: #a96c12;
  --shadow: 0 22px 58px rgba(27, 78, 96, .10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 7%, rgba(63, 201, 210, .12), transparent 25rem),
    radial-gradient(circle at 92% 18%, rgba(127, 225, 207, .11), transparent 24rem),
    linear-gradient(180deg, #f8fdfe 0, #fff 32rem, #f7fcfd 100%);
  font-family: "Noto Sans", "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: 15px;
  line-height: 1.8;
}

a { color: inherit; }
img { max-width: 100%; }
.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(194, 224, 229, .85);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(18px);
}
.site-header .wrap { min-height: 68px; display: flex; align-items: center; gap: 16px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.brand img { width: 42px; height: 42px; border-radius: 14px; object-fit: cover; box-shadow: 0 8px 18px rgba(12, 155, 174, .16); }
.brand strong { display: block; font-family: "Zen Maru Gothic", sans-serif; font-size: 15px; line-height: 1.25; }
.brand small { display: block; color: var(--muted); font-size: 9px; letter-spacing: .12em; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 8px; }

.button {
  min-height: 42px;
  padding: 0 17px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--aqua-deep);
  background: #fff;
  font-size: 12px;
  font-weight: 800;
  text-decoration: none;
  transition: transform .18s, box-shadow .18s, background .18s;
}
.button:hover { transform: translateY(-1px); background: var(--pale); }
.button.primary { border-color: transparent; color: #fff; background: linear-gradient(135deg, var(--aqua), #14adbb); box-shadow: 0 12px 25px rgba(10, 155, 173, .24); }
.button.primary:hover { box-shadow: 0 15px 31px rgba(10, 155, 173, .30); }

.hero { min-height: 540px; display: grid; grid-template-columns: 1.2fr .8fr; align-items: center; gap: 58px; padding: 66px 0 50px; }
.eyebrow { margin: 0 0 13px; color: var(--aqua-deep); font-size: 10px; font-weight: 900; letter-spacing: .22em; text-transform: uppercase; }
.hero h1 { max-width: 720px; margin: 0; font: 900 clamp(38px, 5.5vw, 66px)/1.18 "Zen Maru Gothic", sans-serif; letter-spacing: -.035em; }
.hero h1 em { color: var(--aqua); font-style: normal; }
.lead { max-width: 700px; margin: 23px 0 0; color: var(--ink-soft); font-size: 16px; line-height: 1.95; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 27px; }
.hero-actions .button { min-height: 50px; padding: 0 24px; font-size: 14px; }
.hero-note { margin: 11px 0 0; color: var(--muted); font-size: 11px; }

.hero-visual { position: relative; min-height: 390px; display: grid; place-items: center; }
.hero-visual::before, .hero-visual::after { content: ""; position: absolute; border: 1px solid rgba(10, 155, 173, .18); border-radius: 50%; }
.hero-visual::before { width: 330px; height: 330px; }
.hero-visual::after { width: 410px; height: 410px; }
.mascot-card { position: relative; z-index: 2; width: 310px; padding: 18px; border: 1px solid var(--line); border-radius: 34px; background: rgba(255,255,255,.90); box-shadow: var(--shadow); transform: rotate(1.5deg); }
.mascot-card img { display: block; width: 100%; aspect-ratio: 1; border-radius: 24px; object-fit: cover; }
.mascot-card p { margin: 13px 5px 3px; color: var(--ink-soft); font-size: 11px; }
.status-chip { position: absolute; z-index: 3; right: 5px; top: 63px; padding: 9px 12px; border: 1px solid #bfe9dd; border-radius: 12px; color: #167c66; background: rgba(248,255,252,.96); font-size: 10px; font-weight: 900; box-shadow: 0 12px 26px rgba(30, 116, 101, .12); }

.answer-card { margin-bottom: 28px; padding: 28px 32px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 34px; align-items: center; border: 1px solid var(--line); border-radius: 24px; background: rgba(255,255,255,.94); box-shadow: var(--shadow); }
.answer-card h2 { margin: 3px 0 0; font: 900 25px/1.4 "Zen Maru Gothic", sans-serif; }
.answer-card p { margin: 0; color: var(--ink-soft); font-size: 14px; }

section.content { padding: 43px 0; }
.section-head { max-width: 750px; margin-bottom: 24px; }
.section-head h2 { margin: 0; font: 900 clamp(24px, 3.5vw, 34px)/1.4 "Zen Maru Gothic", sans-serif; }
.section-head p { margin: 9px 0 0; color: var(--muted); font-size: 14px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.card { padding: 22px; border: 1px solid var(--line); border-radius: 19px; background: rgba(255,255,255,.92); box-shadow: 0 13px 33px rgba(27, 78, 96, .06); }
.card-num { width: 35px; height: 30px; display: grid; place-items: center; border-radius: 10px; color: var(--aqua-deep); background: var(--pale); font-size: 10px; font-weight: 900; }
.card h3 { margin: 14px 0 6px; font-size: 15px; }
.card p { margin: 0; color: var(--muted); font-size: 12px; }

.spec-panel { overflow: hidden; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: var(--shadow); }
.spec-row { display: grid; grid-template-columns: 220px 1fr; border-top: 1px solid #e4f0f2; }
.spec-row:first-child { border-top: 0; }
.spec-row dt, .spec-row dd { margin: 0; padding: 17px 20px; }
.spec-row dt { color: var(--aqua-deep); background: #f2fbfc; font-size: 12px; font-weight: 900; }
.spec-row dd { color: var(--ink-soft); font-size: 13px; }

.safety { padding: 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 28px; border: 1px solid #c9e8e0; border-radius: 26px; background: linear-gradient(135deg, #f3fcf9, #f2fbfd); }
.safety h2 { margin: 0; font: 900 27px/1.45 "Zen Maru Gothic", sans-serif; }
.safety p { margin: 9px 0 0; color: var(--ink-soft); font-size: 13px; }
.safe-list { margin: 0; padding: 0; display: grid; gap: 9px; list-style: none; }
.safe-list li { position: relative; padding: 11px 13px 11px 40px; border: 1px solid rgba(178, 222, 214, .8); border-radius: 12px; background: rgba(255,255,255,.82); color: var(--ink-soft); font-size: 12px; }
.safe-list li::before { content: "✓"; position: absolute; left: 14px; color: var(--mint); font-weight: 900; }

.faq { display: grid; gap: 10px; }
.faq details { border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.faq summary { padding: 17px 20px; cursor: pointer; font-weight: 800; font-size: 14px; }
.faq details p { margin: 0; padding: 0 20px 19px; color: var(--muted); font-size: 13px; }

.final-cta { margin: 30px 0 65px; padding: 38px; text-align: center; border: 1px solid var(--line); border-radius: 28px; background: linear-gradient(145deg, #edfafa, #fff); box-shadow: var(--shadow); }
.final-cta h2 { margin: 0; font: 900 29px/1.45 "Zen Maru Gothic", sans-serif; }
.final-cta p { margin: 8px auto 19px; max-width: 680px; color: var(--muted); font-size: 13px; }
.footer { padding: 31px 20px 44px; border-top: 1px solid var(--line); text-align: center; color: var(--muted); font-size: 11px; }
.footer a { color: var(--aqua-deep); text-decoration: none; font-weight: 700; }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; gap: 22px; padding-top: 46px; }
  .hero-visual { min-height: 310px; }
  .mascot-card { width: 270px; }
  .hero-visual::before { width: 280px; height: 280px; }
  .hero-visual::after { width: 340px; height: 340px; }
  .answer-card, .safety { grid-template-columns: 1fr; gap: 14px; }
  .grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .wrap { width: min(100% - 28px, 560px); }
  .site-header .wrap { min-height: 62px; }
  .brand small { display: none; }
  .nav .button:first-child { display: none; }
  .button { padding: 0 13px; }
  .hero { min-height: 0; padding: 39px 0 30px; }
  .hero h1 { font-size: 39px; }
  .lead { font-size: 14px; }
  .hero-visual { min-height: 270px; }
  .mascot-card { width: 235px; }
  .status-chip { right: 0; top: 38px; }
  .answer-card { padding: 22px; }
  section.content { padding: 34px 0; }
  .grid { grid-template-columns: 1fr; }
  .spec-row { grid-template-columns: 1fr; }
  .spec-row dt { padding-bottom: 7px; }
  .spec-row dd { padding-top: 7px; }
  .safety, .final-cta { padding: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}