/* ============================================================
   Incept — shared styles
   Design tokens lifted from the original Claude Design page.
   ============================================================ */
:root {
  /* ============================================================
     浮世絵 — Ukiyo-e woodblock direction
     Warm block-dark ground; three pigments carry meaning:
       紅 beni   #C0342B  — action (rare, punchy: the seal)
       ベロ藍 bero-ai #2E769B — signal / everyday linework
       黄檗 kihada #E0A82E — live / status
     ============================================================ */
  --bg:        #17130e;   /* 版木 warm block ground */
  --bg-2:      #1b1610;   /* alt sections */
  --bg-3:      #201a13;   /* insets / cards raised */
  --panel:     #110d09;   /* deep inset */
  --card:      #201a13;
  --line:      #2b2319;   /* hairlines */
  --line-2:    #372c20;
  --line-3:    #473829;
  --ink:       #f0e7d5;   /* 楮紙 kozo paper white */
  --muted:     #c3b49a;
  --muted-2:   #a2937c;
  --dim:       #7a6c58;
  --dim-2:     #6f6350;
  --dim-3:     #574c3e;

  /* action — 紅 beni */
  --accent:    #c0342b;
  --accent-h:  #d1493b;
  --accent-l:  #e6c9b8;
  /* signal — ベロ藍 bero-ai */
  --signal:    #2e769b;
  --signal-h:  #3d8cb4;
  --signal-l:  #aed0e0;
  /* live / status — 黄檗 kihada */
  --live:      #e0a82e;
  --green:     #e0a82e;  /* legacy alias → kihada */

  /* type: 明朝 Mincho display · ゴシック Gothic body & labels · mono for code only */
  --serif: 'Shippori Mincho', 'Hiragino Mincho ProN', 'Yu Mincho', YuMincho, Georgia, serif;
  --sans:  'Zen Kaku Gothic New', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic', YuGothic, sans-serif;
  --mono:  'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --maxw: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
::selection { background: rgba(192,52,43,0.32); }
img { max-width: 100%; display: block; }
em { color: var(--ink); font-style: italic; font-family: var(--serif); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding-left: 32px; padding-right: 32px; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid var(--line);
  background: rgba(8,9,11,0.82);
  backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 14px 32px;
  display: flex; justify-content: space-between; align-items: center;
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand img { width: 26px; height: 26px; border-radius: 7px; }
.brand span { font-weight: 600; font-size: 16px; letter-spacing: -0.2px; }
.nav-links { display: flex; align-items: center; gap: 26px; font-family: var(--sans); font-size: 13px; color: var(--muted-2); }
.nav-links a { transition: color .15s; }
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); }
.nav-cta {
  color: #06070a !important; background: var(--accent);
  padding: 8px 16px; border-radius: 7px; font-weight: 600;
  transition: background .15s;
}
.nav-cta:hover { background: var(--accent-h); color: #06070a !important; }

/* ---------- type ---------- */
.eyebrow {
  font-family: var(--sans); font-weight: 500; font-size: 12px; letter-spacing: 0.28em;
  color: var(--signal); text-transform: uppercase; margin-bottom: 20px;
}
h1 { font-family: var(--serif); font-size: 58px; line-height: 1.08; font-weight: 500; letter-spacing: -0.01em; text-wrap: balance; }
h2 { font-family: var(--serif); font-size: 40px; line-height: 1.12; font-weight: 500; letter-spacing: -0.01em; text-wrap: balance; }
h3 { font-weight: 600; font-size: 17px; }
.lead { font-size: 16px; line-height: 1.72; color: var(--muted); }
.meta { font-family: var(--sans); font-size: 11.5px; letter-spacing: 0.02em; color: var(--dim-2); }
.kbd, code { font-family: var(--mono); font-size: 0.92em; color: var(--signal-l); }

/* ---------- sections ---------- */
.section { border-top: 1px solid var(--line); }
.section > .wrap { padding-top: 116px; padding-bottom: 116px; }
.section.alt { background: var(--bg-2); }

/* ---------- buttons + inputs ---------- */
.btn {
  background: var(--accent); color: #06070a; border: none; border-radius: 8px;
  padding: 0 22px; font-family: var(--sans); font-weight: 600; font-size: 14px;
  cursor: pointer; white-space: nowrap; transition: background .15s;
}
.btn:hover { background: var(--accent-h); }
.ipt {
  flex: 1; background: var(--panel); border: 1px solid var(--line-3); color: var(--ink);
  border-radius: 8px; padding: 13px 15px; font-family: var(--mono); font-size: 13px;
  outline: none; transition: border-color .15s;
}
.ipt::placeholder { color: var(--dim-2); }
.ipt:focus { border-color: var(--signal); }
.form { display: flex; gap: 10px; max-width: 440px; }

/* ---------- panel (demo inset) ---------- */
.panel {
  background: var(--panel); border: 1px solid var(--line-2); border-radius: 14px;
  padding: 20px 22px 24px; box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}
.panel-head {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 10.5px; color: var(--dim-2);
  margin-bottom: 8px; letter-spacing: 0.08em;
}
.live { color: var(--green); }

/* ---------- cards ---------- */
.grid { display: grid; gap: 14px; }
.cols-3 { grid-template-columns: repeat(auto-fit, minmax(264px, 1fr)); }
.cols-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line-2); border-radius: 12px;
  padding: 24px; transition: border-color .15s;
}
.card:hover { border-color: #2d3340; }
.card .tag { font-family: var(--sans); font-weight: 500; font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--signal); margin-bottom: 14px; }
.card h3 { margin-bottom: 8px; }
.card p { font-size: 14px; line-height: 1.6; color: var(--muted-2); }

/* ---------- node reference ---------- */
.cat { background: var(--bg-3); border: 1px solid var(--line-2); border-radius: 11px; padding: 20px 22px; }
.cat-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--line);
}
.cat-head .name { font-family: var(--sans); font-size: 12.5px; color: var(--ink); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; }
.cat-head .count { font-family: var(--mono); font-size: 10px; color: var(--signal); }
.node { display: grid; grid-template-columns: 168px 1fr; gap: 12px; padding: 5px 0; align-items: baseline; }
.node .n { font-family: var(--mono); font-size: 12px; color: var(--signal-l); }
.node .d { font-size: 13px; line-height: 1.5; color: var(--muted-2); }

/* ---------- roadmap ---------- */
.road-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.road-col { background: var(--bg-3); border: 1px solid var(--line-2); border-radius: 12px; padding: 22px 22px 8px; }
.road-col h3 { display: flex; align-items: center; gap: 9px; margin-bottom: 18px; font-size: 12.5px; font-family: var(--sans); font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; }
.pip { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.pip.shipped { background: var(--green); }
.pip.next { background: var(--accent); }
.pip.later { background: var(--dim); }
.road-item { padding: 13px 0; border-top: 1px solid var(--line); }
.road-item:first-of-type { border-top: none; }
.road-item .t { font-weight: 600; font-size: 14px; margin-bottom: 4px; }
.road-item .x { font-size: 13px; line-height: 1.55; color: var(--muted-2); }
.road-item .code { font-family: var(--mono); font-size: 10px; color: var(--dim); }

/* ---------- colophon (奥付) ---------- */
.colophon .kento {
  display: flex; gap: 10px; align-items: center;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  color: var(--dim-2); margin-top: 40px;
}
.colophon .kento svg { display: block; }
.pigments { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }
.pigment {
  border: 1px solid var(--line-2); border-radius: 12px; overflow: hidden;
  background: var(--bg-3); transition: border-color .15s;
}
.pigment:hover { border-color: var(--line-3); }
.pig-swatch {
  height: 148px; display: flex; align-items: center; justify-content: center;
  position: relative;
}
/* carved registration mark in each block corner */
.pig-swatch::before, .pig-swatch::after {
  content: ""; position: absolute; width: 13px; height: 13px;
  border-color: rgba(23,19,14,0.55); border-style: solid;
}
.pig-swatch::before { top: 12px; left: 12px; border-width: 1.5px 0 0 1.5px; }
.pig-swatch::after { bottom: 12px; right: 12px; border-width: 0 1.5px 1.5px 0; }
.pig-kanji {
  font-family: var(--serif); font-size: 66px; font-weight: 500; line-height: 1;
  color: rgba(23,19,14,0.82);
}
.pig-body { padding: 18px 20px 22px; }
.pig-name { font-family: var(--serif); font-size: 21px; color: var(--ink); margin-bottom: 3px; }
.pig-name span { font-size: 15px; color: var(--muted-2); margin-left: 9px; }
.pig-role { font-family: var(--sans); font-weight: 500; font-size: 10.5px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 13px; }
.pig-body p { font-size: 13.5px; line-height: 1.62; color: var(--muted-2); margin-bottom: 16px; }
.pig-hex { font-family: var(--mono); font-size: 12px; color: var(--dim); display: flex; justify-content: space-between; }
.pig-hex .jp { color: var(--dim-2); }

/* ---------- misc ---------- */
.callout {
  border: 1px solid var(--line-2); border-left: 2px solid var(--accent);
  border-radius: 8px; padding: 16px 20px; background: var(--bg-3);
  font-size: 14.5px; line-height: 1.65; color: var(--muted);
}
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.lean { grid-template-columns: 0.92fr 1.08fr; }
.split.thesis { grid-template-columns: 1fr 0.9fr; }
.hero-grid { display: grid; grid-template-columns: 1.04fr 1fr; gap: 44px; align-items: center; padding: 74px 32px 86px; }
.field-row { display: flex; gap: 22px; align-items: center; }
.mods { font-family: var(--mono); font-size: 12.5px; line-height: 2.1; color: var(--muted); }
.mods .m { color: var(--signal); }
.pagehead > .wrap { padding-top: 64px; padding-bottom: 18px; }
.pagehead h1 { font-size: 46px; letter-spacing: -1.5px; }
.crumb { font-family: var(--sans); font-size: 12.5px; color: var(--dim); margin-top: 18px; }
.crumb a { color: var(--signal); }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); }
.foot {
  max-width: var(--maxw); margin: 0 auto; padding: 46px 32px;
  display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 30px;
}
.foot .about { max-width: 380px; }
.foot .about .row { display: flex; align-items: center; gap: 11px; margin-bottom: 14px; }
.foot .about img { width: 24px; height: 24px; border-radius: 6px; }
.foot .about p { font-size: 13px; line-height: 1.6; color: var(--dim); margin-bottom: 12px; }
.foot-links { display: flex; gap: 56px; font-family: var(--sans); font-size: 13px; }
.foot-links .col { display: flex; flex-direction: column; gap: 11px; }
.foot-links .h { color: var(--dim-3); font-size: 11px; letter-spacing: 0.1em; }
.foot-links a { color: var(--muted); }
.foot-links a:hover { color: var(--ink); }
.foot-base { max-width: var(--maxw); margin: 0 auto; padding: 0 32px 40px; }
.foot-base .inner { border-top: 1px solid var(--line); padding-top: 20px; font-family: var(--sans); font-size: 11.5px; color: var(--dim-3); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .split, .split.lean, .split.thesis { grid-template-columns: 1fr; gap: 32px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; padding: 48px 32px 56px; }
  .field-row { flex-wrap: wrap; }
  .road-cols { grid-template-columns: 1fr; }
  h1, .pagehead h1 { font-size: 40px; letter-spacing: -1.2px; }
  h2 { font-size: 30px; }
  .nav-links { gap: 16px; font-size: 11.5px; }
  .nav-links a.hide-sm { display: none; }
  .node { grid-template-columns: 140px 1fr; }
  .pigments { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .brand span { display: none; }            /* logo only — make room for nav */
  .nav-links { gap: 13px; font-size: 11px; }
  .nav-cta { padding: 7px 12px; }
  .nav-inner { padding: 12px 20px; }
}
@media (max-width: 560px) {
  .wrap, .nav-inner, .foot, .foot-base { padding-left: 20px; padding-right: 20px; }
  .node { grid-template-columns: 1fr; gap: 2px; }
}