:root {
  --paper: #f7f4ee;
  --paper-deep: #eee9df;
  --white: #fffefa;
  --ink: #1e2925;
  --muted: #65706b;
  --line: #d8d6ce;
  --mint: #35c99a;
  --mint-dark: #08795e;
  --navy: #13201c;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", Meiryo, sans-serif;
  line-height: 1.75;
  letter-spacing: 0.01em;
}
a { color: inherit; }
img { max-width: 100%; }
.site-header {
  min-height: 74px;
  padding: 13px max(22px, calc((100vw - 1160px) / 2));
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 30px;
  border-bottom: 1px solid rgba(30, 41, 37, 0.1);
  background: rgba(247, 244, 238, 0.94);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 800; letter-spacing: 0.12em; text-decoration: none; }
.brand img { width: 34px; height: 34px; border-radius: 10px; }
.site-header nav { justify-self: end; display: flex; gap: 26px; font-size: 13px; }
.site-header nav a { text-decoration: none; }
.site-header nav a:hover { text-decoration: underline; text-underline-offset: 4px; }
.header-cta, .button { display: inline-flex; align-items: center; justify-content: center; border-radius: 10px; font-weight: 750; text-decoration: none; }
.header-cta { padding: 9px 18px; color: #fff; background: var(--navy); font-size: 13px; }
.button { padding: 14px 24px; }
.primary { color: #07130f; background: var(--mint); box-shadow: 0 5px 0 #1b8d6a; }
.primary:hover { transform: translateY(1px); box-shadow: 0 4px 0 #1b8d6a; }
.hero {
  max-width: 1160px;
  margin: 0 auto;
  padding: 78px 24px 82px;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(380px, 0.85fr);
  gap: clamp(42px, 7vw, 90px);
  align-items: center;
}
.kicker, .section-title > p, .closing > p { margin: 0 0 12px; color: var(--mint-dark); font-size: 13px; font-weight: 750; }
.hero h1 { margin: 0 0 24px; font-size: clamp(43px, 5.1vw, 68px); line-height: 1.25; letter-spacing: -0.045em; }
.lead { margin: 0; max-width: 610px; color: #46534e; font-size: 16px; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 22px 0 -8px; list-style: none; }
.hero-proof li { padding: 5px 10px; border: 1px solid #b7dfd0; border-radius: 999px; color: var(--mint-dark); background: #effaf5; font-size: 12px; font-weight: 700; }
.hero-actions { margin: 30px 0 22px; display: flex; align-items: center; gap: 22px; }
.text-link { font-weight: 700; text-underline-offset: 5px; }
.age-note { margin: 0; color: var(--muted); font-size: 12px; }
.hero-art { margin: 0; transform: rotate(1.2deg); }
.hero-art img { display: block; width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: 63% center; border: 10px solid var(--white); box-shadow: 0 18px 45px rgba(33, 44, 39, 0.15); }
.hero-art figcaption { margin: 12px 10px 0; color: var(--muted); font-size: 12px; line-height: 1.65; }
.maker-note {
  max-width: 1030px;
  margin: 0 auto 110px;
  padding: 30px 34px;
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 30px;
  background: #fff8dc;
  border: 1px solid #e4d9a9;
  border-radius: 5px;
  box-shadow: 7px 7px 0 #ded5bd;
  transform: rotate(-0.35deg);
}
.note-title { margin: 2px 0; color: #8b6519; font-weight: 800; }
.maker-note h2 { margin: 0 0 8px; font-size: 22px; }
.maker-note p:last-child { margin: 0; color: #5a584d; }
.preview-section { background: var(--paper-deep); }
.preview-section[hidden] { display: none; }
.preview-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.preview-card { min-width: 0; padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--white); }
.preview-eyebrow { margin: 0 0 5px; color: var(--mint-dark); font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.preview-card h3 { margin: 0 0 16px; font-size: 19px; line-height: 1.4; }
.preview-list { display: grid; gap: 12px; }
.preview-item { padding-top: 12px; border-top: 1px solid var(--line); }
.preview-item strong { display: block; }
.preview-item p { margin: 3px 0 7px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.preview-register-link { display: inline-block; margin-top: 10px; color: var(--mint-dark); font-size: 13px; font-weight: 750; }
.preview-options, .preview-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 8px; }
.preview-options span, .preview-chips span { padding: 7px 10px; border: 1px solid #b7dfd0; border-radius: 999px; color: var(--mint-dark); background: #effaf5; font-size: 13px; }
.preview-cta { grid-column: 1 / -1; justify-self: center; margin-top: 8px; }
.plain-section, .story-section, .safety-section, .push-section, .operation-section, .closing { max-width: 1080px; margin: 0 auto; padding: 100px 24px; }
.section-title { max-width: 760px; margin-bottom: 44px; }
.section-title h2, .closing h2 { margin: 0; font-size: clamp(30px, 4vw, 48px); line-height: 1.4; letter-spacing: -0.03em; }
.section-lead { margin: 14px 0 0; color: var(--muted); }
.service-list { border-top: 1px solid var(--line); }
.service-list article { padding: 26px 4px; display: grid; grid-template-columns: minmax(250px, 0.72fr) 1fr; gap: 34px; border-bottom: 1px solid var(--line); }
.service-list h3 { margin: 0; font-size: 19px; }
.service-list p { margin: 0; color: var(--muted); }
.story-section {
  max-width: none;
  padding-left: max(24px, calc((100vw - 1032px) / 2));
  padding-right: max(24px, calc((100vw - 1032px) / 2));
  background: var(--white);
  border-block: 1px solid var(--line);
}
.story-art { display: block; width: 100%; max-height: 600px; object-fit: cover; border-radius: 6px; }
.steps { margin: 36px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; list-style: none; }
.steps li { display: flex; gap: 15px; }
.steps span { flex: 0 0 auto; width: 31px; height: 31px; display: grid; place-items: center; color: #fff; background: var(--navy); border-radius: 50%; font-size: 13px; font-weight: 800; }
.steps h3 { margin: 1px 0 7px; font-size: 17px; }
.steps p { margin: 0; color: var(--muted); font-size: 13px; }
.safety-section { display: grid; grid-template-columns: minmax(280px, 0.78fr) 1fr; gap: 72px; }
.safety-list { margin: 0; border-top: 2px solid var(--ink); }
.safety-list > div { padding: 21px 0; display: grid; grid-template-columns: 100px 1fr; gap: 22px; border-bottom: 1px solid var(--line); }
.safety-list dt { font-weight: 800; }
.safety-list dd { margin: 0; color: var(--muted); }
.push-section { border-top: 1px solid var(--line); }
.push-layout { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr); gap: 42px; align-items: start; }
.push-layout > img { display: block; width: 100%; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.push-copy { padding-top: 2px; }
.push-copy ol { margin: 0 0 28px; padding-left: 22px; }
.push-copy li { margin-bottom: 12px; }
.push-copy p { padding-top: 19px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.push-copy strong { color: var(--ink); }
.operation-section { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; border-top: 1px solid var(--line); }
.operation-section h2 { margin: 0 0 12px; font-size: 23px; }
.operation-section p { margin: 0; color: var(--muted); }
.operation-section a { color: var(--mint-dark); font-weight: 700; }
.closing { max-width: 1080px; margin-bottom: 90px; padding: 56px; color: #fff; background: var(--navy); border-radius: 7px; position: relative; overflow: hidden; }
.closing::after { content: ""; width: 190px; height: 190px; border: 38px solid rgba(53, 201, 154, 0.18); border-radius: 50%; position: absolute; right: -55px; bottom: -75px; }
.closing > * { position: relative; z-index: 1; }
.closing > p { color: #79e7c5; }
.closing .button { margin-top: 28px; }
footer { padding: 34px max(22px, calc((100vw - 1160px) / 2)); display: flex; align-items: center; gap: 28px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
footer p:first-of-type { margin-left: auto; }
@media (max-width: 820px) {
  .site-header { min-height: 64px; padding: 10px 17px; grid-template-columns: auto 1fr; }
  .site-header nav { display: none; }
  .header-cta { justify-self: end; }
  .hero { padding: 54px 20px 66px; grid-template-columns: 1fr; gap: 45px; }
  .hero h1 { font-size: clamp(39px, 12vw, 52px); }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 17px; }
  .hero-actions .text-link { text-align: center; }
  .hero-art { margin: 0 7px; }
  .hero-art img { aspect-ratio: 4 / 4.8; border-width: 7px; }
  .maker-note { margin: 0 18px 72px; padding: 25px 22px; grid-template-columns: 1fr; gap: 4px; box-shadow: 5px 5px 0 #ded5bd; }
  .plain-section, .story-section, .safety-section, .push-section, .operation-section { padding: 72px 20px; }
  .section-title { margin-bottom: 34px; }
  .service-list article { grid-template-columns: 1fr; gap: 8px; }
  .story-art { border-radius: 4px; }
  .steps { grid-template-columns: 1fr; gap: 24px; }
  .steps p { font-size: 14px; }
  .safety-section { grid-template-columns: 1fr; gap: 16px; }
  .safety-list > div { grid-template-columns: 78px 1fr; gap: 15px; }
  .push-layout { grid-template-columns: 1fr; gap: 28px; }
  .operation-section { grid-template-columns: 1fr; gap: 40px; }
  .closing { margin: 0 18px 65px; padding: 38px 25px; }
  footer { align-items: flex-start; flex-direction: column; gap: 7px; }
  footer p { margin: 0; }
  footer p:first-of-type { margin-left: 0; }
}
@media (max-width: 520px) {
  .preview-grid { grid-template-columns: 1fr; }
  .preview-card { padding: 18px; }
  .preview-cta { grid-column: auto; width: 100%; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .primary:hover { transform: none; } }