/* Reach on SANMA 紹介ページ
   炭火の秋刀魚：炭の黒、皮の銀、焦げ目の橙。
   純白と純黒を使わないことで、落ち着いた見え方にする。
   ヒーローの盤面だけは実物と同じ緑のラシャ。 */

:root {
  --ember: #d9702c;
  --ember-dark: #b85a1e;
  --ink: #1f2226;
  --body: #4f545c;
  --muted: #868c96;
  --silver: #aab0bb;
  --paper: #faf8f4;
  --cream: #f1eee7;
  --line: #e3e0d8;
  --night: #1b1d21;
  --night-line: #33373e;
  --white: #fff;
  --felt: #1e6b46;
  --felt-dark: #17553a;
  --radius: 20px;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--body);
  font-family: Inter, "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--ember-dark); }
code { font-family: "Cascadia Code", Consolas, monospace; font-size: .92em; background: var(--cream); padding: 1px 6px; border-radius: 5px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { color: var(--ink); line-height: 1.35; letter-spacing: -.01em; margin: 0; }
h2 { font-size: clamp(28px, 3.1vw, 40px); font-weight: 700; }
h3 { font-size: 18px; font-weight: 650; }
p { margin: 0; }

.eyebrow {
  display: flex; align-items: center; gap: 12px;
  color: var(--ember-dark);
  font-size: 11px; font-weight: 700; letter-spacing: .17em;
  margin: 0 0 20px;
}
.eyebrow:before { content: ""; width: 24px; height: 1px; background: currentColor; }

/* ---- ヘッダー ---- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: #faf8f4d9; backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.header-inner { height: 72px; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); text-decoration: none; }
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 26px; }
.nav a { color: var(--body); text-decoration: none; font-size: 14px; font-weight: 500; }
.nav a:hover { color: var(--ember-dark); }

/* ---- ボタン ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px;
  font-weight: 650; font-size: 15px; text-decoration: none;
  transition: background .2s, transform .2s, box-shadow .2s;
}
.btn-main { background: var(--ember); color: var(--white); box-shadow: 0 8px 22px #d9702c38; }
.btn-main:hover { background: var(--ember-dark); transform: translateY(-1px); box-shadow: 0 12px 28px #d9702c45; }
.btn-sub { background: var(--white); color: var(--ink); border: 1px solid var(--line); }
.btn-sub:hover { border-color: #cfcabf; transform: translateY(-1px); }

/* ---- ヒーロー ---- */
.hero { position: relative; padding: 88px 0 76px; overflow: hidden; }
.hero:before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(ellipse at 50% 58%, #f3e3d3 0, transparent 62%), var(--paper);
}
.hero-grid { display: grid; grid-template-columns: 1.04fr .96fr; gap: 56px; align-items: center; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--white); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px; font-size: 12px; font-weight: 650; color: var(--ink);
  box-shadow: 0 2px 6px #1f22260d;
}
.pill b { color: var(--ember-dark); }
h1 { font-size: clamp(36px, 4.6vw, 58px); font-weight: 750; margin: 22px 0 20px; }
.lead { font-size: 17px; max-width: 30em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 18px; }
.hero-note { font-size: 13px; color: var(--muted); }

/* ---- 盤面のモック（スマホの画面） ----
   app/css/style.css の配色をそのまま使う。牌は文字（数字＋筒索萬／字牌）。 */
.phone {
  width: 320px; margin: 0 auto;
  background: var(--night); border-radius: 34px; padding: 12px;
  box-shadow: 0 30px 70px -26px #1f222688, 0 0 0 1px #d9d4cb;
}
.board {
  background: var(--felt); border-radius: 24px; overflow: hidden; color: #f3f6f4;
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  padding: 8px 8px 8px; font-size: 9px; line-height: 1.3;
}
.tb { display: flex; gap: 4px; align-items: center; margin-bottom: 6px; }
.tb span { background: #00000047; border-radius: 6px; padding: 3px 6px; font-weight: 700; font-size: 8.5px; white-space: nowrap; }
.tb .tt { background: none; font-family: "Noto Serif JP", "Yu Mincho", serif; font-size: 11px; padding-left: 2px; color: #ffcf4d; }
.ib { display: flex; gap: 8px; align-items: center; background: #00000030; border-radius: 6px; padding: 4px 8px; margin-bottom: 7px; font-size: 9px; }
.ib b { color: #ffcf4d; }
.ib .t { --w: 13px; --h: 18px; margin-left: 2px; }
.seat { border-top: 1px solid #ffffff2e; padding: 5px 0 4px; }
.sh { display: flex; gap: 8px; align-items: center; font-size: 9px; margin-bottom: 4px; }
.sh b { font-weight: 700; }
.sh .rc { background: #ffcf4d; color: #1b1d21; border-radius: 4px; padding: 0 5px; font-weight: 700; font-size: 8px; }
.sh span:last-child { margin-left: auto; opacity: .85; }
.row { display: flex; gap: 2px; align-items: flex-end; margin-bottom: 3px; }
.row.backs i { width: 14px; height: 19px; border-radius: 2px; background: linear-gradient(150deg, #4a9ad6, #2c7fbf 60%, #23648f); border: 1px solid #1c5680; }
.t {
  --w: 17px; --h: 24px;
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
  width: var(--w); height: var(--h); border-radius: 2.5px;
  background: linear-gradient(#fffdf6, #fbf7ec); border: 1px solid #cdc4ae; border-bottom-width: 2px;
  color: #2b2b2b; font-weight: 700; font-style: normal; line-height: 1; flex: none;
  font-family: "Noto Serif JP", "Yu Mincho", serif; font-size: calc(var(--h) * .40);
}
.t small { font-family: "Noto Sans JP", sans-serif; font-size: calc(var(--h) * .28); margin-top: 1px; }
.t.m { color: #b3403a; }
.t.p { color: #1f6fb2; }
.t.s { color: #1f7a45; }
.t.z { font-size: calc(var(--h) * .50); }
.t.red { color: #d81e28; }
.t.dim { opacity: .45; }
.t.riichi { outline: 2px solid #e2564a; outline-offset: -1px; }
.t.draw { margin-left: 5px; }
.log { background: #00000030; border-radius: 6px; padding: 5px 8px; margin: 6px 0; font-size: 8.5px; opacity: .9; }
.seat.me .row.hand { margin-top: 4px; }
.seat.me .row.hand .t { --w: 19.5px; --h: 27px; }
.kita { background: #00000047; border-radius: 4px; padding: 2px 4px; font-size: 8px; font-weight: 700; margin-right: 2px; align-self: center; }
.acts { display: flex; gap: 5px; align-items: center; margin-top: 7px; }
.ab { background: #ffcf4d; color: #1b1d21; border-radius: 7px; padding: 5px 10px; font-weight: 700; font-size: 9.5px; }
.ab.sub { background: #ffffff2b; color: #f3f6f4; }
.acts .hint { font-size: 8px; opacity: .85; white-space: nowrap; }

/* ---- 仕様の帯 ---- */
.specs { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--white); }
.specs-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.spec { padding: 26px 24px; border-left: 1px solid var(--line); }
.spec:first-child { border-left: 0; }
.spec b { display: block; color: var(--ink); font-size: 15px; font-weight: 650; }
.spec span { font-size: 13px; color: var(--muted); }

section { padding: 84px 0; }
.sec-head { max-width: 44em; margin-bottom: 44px; }
.sec-head p { margin-top: 14px; }

/* ---- 対戦相手 ---- */
.chars { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.char { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 20px; transition: box-shadow .2s, transform .2s; }
.char:hover { box-shadow: 0 18px 44px -20px #1f22262e; transform: translateY(-2px); }
.char .cn { font-size: 12px; font-weight: 700; color: var(--ember-dark); letter-spacing: .1em; }
.char h3 { margin: 6px 0 8px; font-family: "Noto Serif JP", "Yu Mincho", serif; font-size: 20px; }
.char p { font-size: 13.5px; min-height: 4.2em; }
.stat { display: flex; flex-wrap: wrap; gap: 4px 10px; margin-top: 12px; font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.stat .hot { color: var(--ember-dark); font-weight: 650; }
.stat .cool { color: #2f6f9f; font-weight: 650; }
.note { font-size: 13.5px; color: var(--muted); margin-top: 16px; }
.levels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 36px; }
.lv { background: var(--cream); border-radius: 14px; padding: 16px 20px; }
.lv b { display: block; color: var(--ink); font-weight: 650; }
.lv span { font-size: 13.5px; color: var(--body); }

/* ---- カード ---- */
.alt { background: var(--white); border-top: 1px solid var(--line); }
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: box-shadow .2s, transform .2s;
}
.card:hover { box-shadow: 0 18px 44px -20px #1f22262e; transform: translateY(-2px); }
.card .num { font-size: 12px; font-weight: 700; color: var(--ember-dark); letter-spacing: .1em; }
.card h3 { margin: 8px 0 10px; }
.card ul { margin: 14px 0 0; padding-left: 1.1em; font-size: 14.5px; }
.card li { margin-bottom: 4px; }

/* ---- 暗いセクション ---- */
.night { background: var(--night); color: #b9bec8; }
.night h2, .night h3 { color: #f2f3f5; }
.night .eyebrow { color: var(--ember); }
.night a { color: #f0b184; }
.night-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 52px; align-items: center; }
.night-list { display: grid; gap: 18px; }
.night-item { border-left: 2px solid var(--night-line); padding-left: 18px; }
.night-item b { display: block; color: #f2f3f5; font-weight: 650; }
.night-item span { font-size: 14.5px; }
.steps-box { background: #22252b; border: 1px solid var(--night-line); border-radius: var(--radius); padding: 26px; }
.flow-step { display: flex; gap: 14px; padding: 13px 0; border-bottom: 1px dashed var(--night-line); align-items: baseline; }
.flow-step:last-child { border-bottom: 0; }
.flow-step em { font-style: normal; color: var(--ember); font-weight: 700; font-size: 13px; min-width: 1.6em; }
.flow-step span { font-size: 14px; }

/* ---- FAQ ---- */
.faq { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); padding: 20px 0; }
summary { cursor: pointer; font-weight: 650; color: var(--ink); list-style: none; display: flex; align-items: center; gap: 12px; }
summary::-webkit-details-marker { display: none; }
summary:before { content: "+"; color: var(--ember-dark); font-weight: 700; }
details[open] summary:before { content: "−"; }
details p { margin-top: 12px; font-size: 15px; padding-left: 24px; }

.cta { text-align: center; background: var(--white); border-top: 1px solid var(--line); }
.cta .hero-actions { justify-content: center; }
.footer { padding: 36px 0 48px; font-size: 13.5px; color: var(--muted); }
.footer-inner { display: flex; flex-wrap: wrap; gap: 14px 26px; align-items: center; }
.footer a { color: var(--body); text-decoration: none; }
.footer a:hover { color: var(--ember-dark); }
.footer .sep { margin-left: auto; }
.footer .counter b { font-weight: 600; color: var(--body); font-variant-numeric: tabular-nums; }

@media (max-width: 900px) {
  .hero-grid, .night-grid { grid-template-columns: 1fr; gap: 40px; }
  .cards, .levels { grid-template-columns: 1fr; }
  .chars { grid-template-columns: 1fr 1fr; }
  .specs-grid { grid-template-columns: 1fr 1fr; }
  .spec:nth-child(3) { border-left: 0; }
  .spec { border-top: 1px solid var(--line); }
  .spec:first-child, .spec:nth-child(2) { border-top: 0; }
  .nav a:not(.btn) { display: none; }
  section { padding: 64px 0; }
}
@media (max-width: 560px) {
  .specs-grid, .chars { grid-template-columns: 1fr; }
  .spec { border-left: 0; }
  .hero { padding: 56px 0 48px; }
  .phone { width: 100%; max-width: 320px; }
}

/* ---- Amazon アソシエイト（道具・本） ---- */
.goods { border-bottom: 1px solid var(--line); }
.goods-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.good { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; transition: box-shadow .2s, transform .2s; }
.good:hover { box-shadow: 0 18px 44px -20px #0000002e; transform: translateY(-2px); }
.good .gcat { font-size: 11px; font-weight: 700; color: var(--ember-dark); letter-spacing: .1em; }
.good h3 { font-size: 16px; margin: 6px 0 8px; }
.good p:not(.gcat) { font-size: 13.5px; flex: 1; }
.glink { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 14px; font-weight: 650; color: var(--ember-dark); text-decoration: none; }
.glink:hover { color: var(--ember); text-decoration: underline; }
.good .gimg { height: 140px; width: auto; max-width: 100%; object-fit: contain; margin: 0 auto 14px; display: block; background: var(--white); }
.good .gprice { font-size: 15px; font-weight: 700; color: var(--ink); margin-top: 10px; }
.good .gprice small { font-size: 11px; font-weight: 500; color: var(--muted); margin-left: 4px; }
.goods-note { font-size: 13px; color: var(--muted); margin-top: 18px; }
.footer .disclosure { width: 100%; font-size: 12.5px; color: var(--muted); margin-top: 6px; }
@media (max-width: 900px) { .goods-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .goods-grid { grid-template-columns: 1fr; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
  .btn:hover, .card:hover, .char:hover { transform: none; }
}