:root {
  color-scheme: dark;
  font-family: Inter, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-synthesis: none;
  --bg: #071411;
  --surface: #0d201b;
  --surface-strong: #112b24;
  --line: #29483f;
  --line-strong: #3f6c5e;
  --text: #effaf6;
  --muted: #a6bbb3;
  --muted-strong: #c9d9d3;
  --green: #63e1b5;
  --gold: #f4c95d;
  --page: min(1160px, calc(100vw - 48px));
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; background: var(--bg); }

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(rgba(63, 108, 94, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 108, 94, 0.08) 1px, transparent 1px),
    var(--bg);
  background-size: 48px 48px;
  letter-spacing: 0;
}

a { color: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 76px;
  padding: 12px max(24px, calc((100vw - 1160px) / 2));
  border-bottom: 1px solid rgba(63, 108, 94, 0.7);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: rgba(7, 20, 17, 0.94);
  backdrop-filter: blur(18px);
}

.brand { min-width: 0; display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { flex: 0 0 auto; border: 1px solid var(--line-strong); border-radius: 8px; }
.brand span { min-width: 0; display: grid; gap: 2px; }
.brand strong { font-size: 17px; }
.brand small { color: var(--muted); font-size: 11px; }

.header-action,
.primary-action {
  min-height: 46px;
  border: 1px solid transparent;
  border-radius: 7px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  text-decoration: none;
  transition: background-color 160ms ease, transform 160ms ease;
}

.header-action { border-color: var(--line-strong); background: var(--surface); color: var(--muted-strong); }
.header-action:hover { border-color: var(--green); color: var(--text); }
.primary-action { background: var(--green); color: #071411; }
.primary-action:hover { background: #80ebc6; transform: translateY(-1px); }

main { width: var(--page); margin: 0 auto; padding: 38px 0 96px; }

.eyebrow { margin: 0; color: var(--green); font-size: 12px; font-weight: 850; }

.hero {
  min-height: 620px;
  padding: clamp(34px, 6vw, 78px) 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(390px, 0.85fr);
  align-items: center;
  gap: clamp(36px, 7vw, 96px);
}

.hero-copy { position: relative; z-index: 1; }
.hero h1,
.section-heading h2,
.intro-band h2,
.safety h2,
.context h2,
.closing h2 { margin: 12px 0 0; line-height: 1.14; }
.hero h1 { max-width: 690px; font-size: clamp(42px, 5.2vw, 72px); }
.hero-lead { max-width: 660px; margin: 22px 0 0; color: var(--gold); font-size: clamp(21px, 2.4vw, 30px); font-weight: 800; line-height: 1.45; }
.hero-description { max-width: 610px; margin: 24px 0 0; color: var(--muted-strong); font-size: 17px; line-height: 1.9; }
.hero-actions { margin-top: 34px; display: flex; align-items: center; flex-wrap: wrap; gap: 18px; }

.text-action { display: inline-flex; align-items: center; gap: 10px; color: var(--green); font-weight: 800; text-decoration: none; }
.text-action:hover { color: #99f0d2; }
.text-action span { font-size: 20px; }

.hero-visual {
  position: relative;
  aspect-ratio: 1200 / 630;
  min-height: 0;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  overflow: hidden;
  background: #0b261f;
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.3);
}

.hero-visual::before,
.hero-visual::after { position: absolute; z-index: 1; content: ""; pointer-events: none; }
.hero-visual::before { inset: 0; background: linear-gradient(140deg, rgba(7, 20, 17, 0.04), rgba(7, 20, 17, 0.6)); }
.hero-visual::after { width: 170%; height: 34%; right: -45%; bottom: 8%; transform: rotate(-27deg); background: rgba(99, 225, 181, 0.14); }
.hero-visual img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }

.hero-note {
  position: absolute;
  z-index: 2;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 7px;
  padding: 11px 14px;
  color: #effaf6;
  background: rgba(7, 20, 17, 0.78);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
  font-size: 13px;
  font-weight: 800;
  backdrop-filter: blur(10px);
}

.hero-note span { color: var(--green); font-size: 19px; vertical-align: -1px; }
.note-one { top: 13%; left: 7%; }
.note-two { right: 7%; bottom: 14%; }

.intro-band,
.steps,
.safety,
.context,
.closing { margin-top: 128px; }

.intro-band { border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); padding: 56px 0 60px; }
.intro-band h2,
.section-heading h2,
.safety h2,
.context h2,
.closing h2 { font-size: clamp(30px, 4vw, 48px); }
.intro-columns { margin-top: 34px; display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.intro-columns p { margin: 0; color: var(--muted-strong); font-size: 17px; line-height: 1.95; }

.section-heading { max-width: 720px; }
.examples .section-heading { max-width: none; }
.examples .section-heading h2 { font-size: clamp(30px, 3.25vw, 44px); white-space: nowrap; }
.example-grid { margin-top: 34px; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.example-card { min-height: 350px; border: 1px solid var(--line); border-radius: 8px; padding: 30px; display: flex; flex-direction: column; background: var(--surface); overflow: hidden; }
.supporter-card { background: linear-gradient(145deg, rgba(18, 58, 47, 0.98), rgba(9, 28, 23, 0.98)); }
.kitchen-card { background: linear-gradient(145deg, rgba(53, 48, 25, 0.72), rgba(13, 32, 27, 0.98)); }
.example-number { color: var(--green); font-size: 13px; font-weight: 850; }
.example-kicker { margin: auto 0 10px; color: var(--gold); font-size: 13px; font-weight: 800; }
.example-card h3 { max-width: 480px; margin: 0; font-size: 28px; line-height: 1.38; }
.example-card p:last-child { max-width: 500px; margin: 16px 0 0; color: var(--muted); line-height: 1.85; }

.step-list { margin: 36px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); list-style: none; }
.step-list li { min-width: 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); padding: 28px 28px 30px 0; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 18px; }
.step-list li + li { border-left: 1px solid var(--line); padding-left: 28px; }
.step-number { width: 34px; height: 34px; border: 1px solid var(--green); border-radius: 50%; display: grid; place-items: center; color: var(--green); font-size: 14px; font-weight: 850; }
.step-list h3 { margin: 6px 0 10px; font-size: 20px; }
.step-list p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }

.safety { border: 1px solid var(--line-strong); border-radius: 8px; padding: clamp(28px, 5vw, 58px); display: grid; grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); gap: clamp(32px, 7vw, 92px); background: rgba(17, 43, 36, 0.92); }
.safety h2 { font-size: clamp(29px, 3.5vw, 42px); }
.safety-details > p { margin: 4px 0 22px; color: var(--muted-strong); line-height: 1.9; }
.safety-details ul { margin: 0; padding: 20px 0 0; border-top: 1px solid var(--line); display: grid; gap: 13px; list-style: none; color: var(--muted); line-height: 1.7; }
.safety-details li { display: grid; grid-template-columns: 14px minmax(0, 1fr); gap: 10px; }
.safety-details li::before { content: "✓"; color: var(--green); font-weight: 900; }

.context { max-width: 820px; margin-right: auto; margin-left: auto; padding: 60px 0; text-align: center; }
.context p:not(.eyebrow) { margin: 24px auto 28px; color: var(--muted-strong); font-size: 17px; line-height: 1.9; }

.closing { border-top: 1px solid var(--line-strong); padding-top: 74px; text-align: center; }
.closing p:not(.eyebrow) { max-width: 620px; margin: 22px auto 30px; color: var(--muted-strong); line-height: 1.85; }

.site-footer { width: var(--page); margin: 0 auto; border-top: 1px solid var(--line); padding: 28px 0 40px; display: flex; align-items: end; justify-content: space-between; gap: 26px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.site-footer p { max-width: 620px; margin: 0; }
.site-footer div { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 14px; }
.site-footer a { color: var(--muted-strong); text-decoration: none; }
.site-footer a:hover { color: var(--green); }

@media (max-width: 820px) {
  :root { --page: min(100% - 32px, 640px); }
  .site-header { padding-right: 16px; padding-left: 16px; }
  .hero { min-height: 0; grid-template-columns: 1fr; gap: 34px; padding-top: 44px; }
  .hero-visual { order: -1; }
  .intro-band, .steps, .safety, .context, .closing { margin-top: 82px; }
  .intro-columns, .safety { grid-template-columns: 1fr; gap: 24px; }
  .step-list { grid-template-columns: 1fr; }
  .step-list li { padding: 24px 0; }
  .step-list li + li { border-left: 0; padding-left: 0; }
  .site-footer { align-items: start; flex-direction: column; }
  .site-footer div { justify-content: flex-start; }
}

@media (max-width: 560px) {
  :root { --page: calc(100% - 28px); }
  .site-header { min-height: 68px; gap: 10px; }
  .brand { gap: 9px; }
  .brand img { width: 38px; height: 38px; }
  .brand strong { font-size: 14px; }
  .brand small { font-size: 10px; }
  .header-action { min-height: 40px; padding: 0 12px; font-size: 12px; white-space: nowrap; }
  main { padding-top: 20px; }
  .hero { padding-top: 28px; }
  .hero h1 { font-size: clamp(38px, 12vw, 50px); }
  .hero-lead { font-size: 20px; }
  .hero-description, .intro-columns p { font-size: 15px; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 14px; }
  .hero-actions .primary-action { width: 100%; }
  .hero-visual { min-height: 0; }
  .examples .section-heading h2 { white-space: normal; }
  .hero-note { padding: 8px 10px; font-size: 11px; }
  .hero-note span { font-size: 15px; }
  .note-one { top: 8%; left: 5%; }
  .note-two { right: 5%; bottom: 8%; }
  .intro-band { padding: 42px 0 46px; }
  .example-grid { grid-template-columns: 1fr; }
  .example-card { min-height: 300px; padding: 24px; }
  .example-card h3 { font-size: 24px; }
  .safety { padding: 24px; }
  .site-footer { padding-bottom: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .primary-action { transition: none; }
}