/* GRASS — 420JP PROJECT site */
:root {
  --bg: #060f0a;
  --bg2: #0a1710;
  --panel: #0e2017;
  --panel2: #12281d;
  --line: #22382c;
  --text: #e9f5ec;
  --muted: #8ea79a;
  --lime: #a6e85f;
  --gold: #f2c75c;
  --red: #ef7c6f;
  --violet: #b394ff;
  --cyan: #7fe3ec;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(1100px 600px at 50% -10%, rgba(70, 150, 90, 0.22), transparent 60%),
    radial-gradient(700px 400px at 100% 100%, rgba(120, 200, 90, 0.08), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--lime); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 22px; }
.serif { font-family: Georgia, "Times New Roman", serif; }

/* header */
.site-head {
  position: sticky; top: 0; z-index: 30;
  background: rgba(6, 15, 10, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 14px; }
.brand { display: flex; align-items: baseline; gap: 10px; color: var(--text); font-weight: 900; letter-spacing: 0.16em; font-size: 20px; }
.brand span { font-size: 9px; letter-spacing: 0.22em; color: var(--muted); font-weight: 700; }
.nav { display: flex; gap: 16px; font-size: 12.5px; align-items: center; }
.nav a { color: #c7dacd; }
.nav a:hover { color: var(--lime); }
.nav .here { color: var(--lime); }
.nav .museum { color: var(--muted); }
@media (max-width: 620px) {
  .nav { gap: 10px; font-size: 11.5px; }
  .brand { font-size: 17px; }
  .brand span { display: none; }
}

/* hero */
.hero { padding: 64px 0 40px; }
.hero .grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; }
.eyebrow { font-size: 10.5px; letter-spacing: 0.26em; color: var(--lime); font-weight: 800; margin: 0 0 14px; }
h1 {
  font-size: clamp(30px, 4.9vw, 54px);
  line-height: 1.18;
  letter-spacing: 0.01em;
  margin: 0 0 18px;
  font-weight: 900;
}
h1 em { font-style: normal; color: var(--lime); }
.lead { font-size: 15px; color: #c3d6c9; max-width: 34em; margin: 0 0 26px; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--line); background: var(--panel2); color: var(--text);
  padding: 13px 20px; border-radius: 12px; font-size: 14px; font-weight: 700;
  transition: transform 0.12s ease, background 0.12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn.primary { background: linear-gradient(180deg, #c4f878, #6ecd3c); color: #08260e; border: none; box-shadow: 0 12px 28px rgba(120, 220, 90, 0.22); }
.btn.ghost { background: transparent; color: var(--muted); }
.phone {
  width: min(310px, 100%);
  margin: 0 auto;
  border-radius: 40px;
  border: 9px solid #1a2a21;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.05);
  overflow: hidden;
  background: #000;
}
.phone img { width: 100%; }
@media (max-width: 860px) {
  .hero .grid { grid-template-columns: 1fr; gap: 30px; }
  .hero { padding: 36px 0 24px; }
  .phone { width: min(260px, 78vw); }
}

/* sections */
section { padding: 44px 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 22px; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.section-head h2 { font-size: 22px; margin: 0; letter-spacing: 0.02em; }
.section-head p { margin: 0; font-size: 12px; color: var(--muted); }
.section-head a { font-size: 12px; }

.quick { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.quick a {
  display: block; color: var(--text); background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--line); border-radius: 16px; padding: 20px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.quick a:hover { text-decoration: none; border-color: #3c5c47; transform: translateY(-2px); }
.quick .num { font-size: 10px; letter-spacing: 0.2em; color: var(--lime); font-weight: 800; }
.quick h3 { margin: 8px 0 4px; font-size: 17px; }
.quick p { margin: 0; font-size: 12.5px; color: var(--muted); line-height: 1.7; }
@media (max-width: 760px) { .quick { grid-template-columns: 1fr; } }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; gap: 22px; } }

.cardrow { width: 100%; border-radius: 14px; border: 1px solid var(--line); background: #0a1510; }
.caption { font-size: 11px; color: var(--muted); margin-top: 8px; text-align: center; }

.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 22px 0 0; }
.facts div { border-top: 1px solid var(--line); padding-top: 10px; }
.facts b { display: block; font-size: 20px; color: var(--lime); font-variant-numeric: tabular-nums; }
.facts span { font-size: 11px; color: var(--muted); }
@media (max-width: 620px) { .facts { grid-template-columns: repeat(2, 1fr); } }

.quote {
  border-left: 3px solid var(--gold);
  padding: 6px 0 6px 18px;
  margin: 22px 0;
  color: #d9cba4;
  font-size: 14px;
}
.quote cite { display: block; font-style: normal; font-size: 11px; color: var(--muted); margin-top: 6px; }

/* trivia teaser */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.why {
  border: 1px solid var(--line); border-radius: 14px; padding: 18px;
  background: rgba(255, 255, 255, 0.02);
}
.why .en { font-size: 11px; letter-spacing: 0.12em; color: var(--gold); font-weight: 800; }
.why h3 { margin: 6px 0 6px; font-size: 16px; }
.why p { margin: 0; font-size: 12.5px; color: #b9cfc0; line-height: 1.75; }
@media (max-width: 820px) { .why-grid { grid-template-columns: 1fr; } }

/* article list */
.list { display: grid; gap: 12px; }
.list a {
  display: grid; grid-template-columns: 64px 1fr auto; gap: 14px; align-items: center;
  padding: 18px; border: 1px solid var(--line); border-radius: 14px;
  color: var(--text); background: rgba(255, 255, 255, 0.02);
}
.list a:hover { text-decoration: none; border-color: #3c5c47; }
.list .no { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.list h3 { margin: 0 0 2px; font-size: 16px; }
.list p { margin: 0; font-size: 12px; color: var(--muted); }
.list .go { color: var(--lime); font-size: 18px; }

/* prose */
.prose { max-width: 780px; margin: 0 auto; }
.prose h2 {
  font-size: 24px; margin: 48px 0 14px; padding-left: 14px;
  border-left: 4px solid var(--lime); line-height: 1.4;
}
.prose h3 { font-size: 17px; margin: 30px 0 8px; color: #e6f3ea; }
.prose p { font-size: 15px; color: #cfdfd4; margin: 14px 0; }
.prose ul, .prose ol { font-size: 14.5px; color: #cfdfd4; padding-left: 22px; }
.prose li { margin: 7px 0; }
.prose strong { color: #fff; }
.prose table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 13px; }
.prose th, .prose td { border-bottom: 1px solid var(--line); padding: 9px 8px; text-align: left; vertical-align: top; }
.prose th { color: var(--lime); font-weight: 700; white-space: nowrap; }
.prose td.en { font-family: Georgia, serif; color: #f0e6c8; white-space: nowrap; }
.prose .small { font-size: 11.5px; color: var(--muted); }
.prose .osaka-table { table-layout: fixed; }
.prose .osaka-table th:nth-child(1), .prose .osaka-table td:nth-child(1) { width: 34%; }
.prose .osaka-table th:nth-child(2), .prose .osaka-table td:nth-child(2) { width: 24%; white-space: nowrap; }
.prose .osaka-table th:nth-child(3), .prose .osaka-table td:nth-child(3) { width: 42%; }
.prose .osaka-table td.en { white-space: normal; overflow-wrap: anywhere; }
.prose figure { margin: 26px 0; }
.prose figcaption { font-size: 11px; color: var(--muted); margin-top: 8px; text-align: center; }
.prose .callout {
  border: 1px solid rgba(242, 199, 92, 0.3);
  background: rgba(242, 199, 92, 0.07);
  border-radius: 14px; padding: 16px 18px; margin: 24px 0;
  font-size: 13.5px; color: #e6d8b0;
}
.prose .callout b { color: var(--gold); }

.page-head { padding: 54px 0 10px; }
.page-head h1 { font-size: clamp(28px, 4.6vw, 46px); margin-bottom: 10px; }
.page-head .meta { font-size: 11.5px; color: var(--muted); letter-spacing: 0.06em; }
.meta-line { display: flex; gap: 14px; flex-wrap: wrap; font-size: 11.5px; color: var(--muted); margin-top: 10px; }

.toc {
  border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; margin: 26px 0 8px;
  background: rgba(255, 255, 255, 0.02);
}
.toc b { font-size: 11px; letter-spacing: 0.18em; color: var(--lime); }
.toc ol { margin: 8px 0 0; padding-left: 20px; font-size: 13px; }
.toc a { color: #c7dacd; }

/* video */
.video-frame {
  max-width: 360px; margin: 0 auto;
  border-radius: 30px; overflow: hidden; border: 1px solid var(--line);
  background: #000; box-shadow: 0 26px 60px rgba(0, 0, 0, 0.5);
}
.video-frame video { width: 100%; display: block; }
.video-meta { max-width: 720px; margin: 26px auto 0; }

/* footer */
.site-foot { border-top: 1px solid var(--line); margin-top: 30px; padding: 30px 0 50px; }
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between; }
.site-foot p { margin: 0; font-size: 11.5px; color: var(--muted); }
.site-foot nav { display: flex; gap: 14px; font-size: 11.5px; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 10px; letter-spacing: 0.14em; font-weight: 800;
  color: var(--lime); border: 1px solid rgba(166, 232, 95, 0.4);
  border-radius: 999px; padding: 4px 10px; margin-bottom: 14px;
}

.small { font-size: 11.5px; color: var(--muted); }
.mt0 { margin-top: 0; }
.center { text-align: center; }