:root {
  --bg: #ffffff;
  --bg-2: #f5f6f8;
  --panel: #ffffff;
  --panel-border: #e3e7ee;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #f2c14e;
  --accent-2: #0ea5a2;
  --danger: #ff7a7a;
  --ok: #118a2f;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: #fff;
  font-family: "Yu Gothic UI", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}
.bg-shape { display: none; }
.bg-shape-a { background: #d9b86c; top: -8rem; right: -6rem; }
.bg-shape-b { background: #44d3c7; bottom: -10rem; left: -8rem; }
.app { position: relative; z-index: 1; width: min(1100px, calc(100% - 2rem)); margin: 2rem auto 3rem; display: grid; gap: 1rem; }
.hero { padding: 1.2rem 1rem 0.2rem; }
.eyebrow { margin: 0; font-size: 0.8rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent-2); }
.hero h1 { margin: 0.3rem 0 0; font-size: clamp(1.6rem, 3vw, 2.3rem); line-height: 1.15; }
.lead { margin: 0.6rem 0 0; color: var(--muted); max-width: 60ch; }
.panel { background: var(--panel); border: 1px solid var(--panel-border); border-radius: 16px; box-shadow: var(--shadow); }
.controls { padding: 1rem; display: grid; gap: 0.8rem; grid-template-columns: 1.4fr 0.8fr auto; align-items: end; }
.field { display: grid; gap: 0.4rem; }
.field span { font-size: 0.85rem; color: var(--muted); }
input, select, button { font: inherit; }
input, select { width: 100%; border-radius: 10px; border: 1px solid #d7dce5; background: #fff; color: var(--text); padding: 0.65rem 0.8rem; }
input:focus, select:focus, button:focus-visible { outline: 2px solid rgba(122, 209, 192, 0.7); outline-offset: 2px; }
.btn { border: none; border-radius: 11px; padding: 0.72rem 1rem; cursor: pointer; transition: transform 120ms ease, filter 120ms ease, opacity 120ms ease; }
.btn:hover { filter: brightness(1.06); }
.btn:active { transform: translateY(1px); }
.btn-primary { color: #111; font-weight: 700; background: linear-gradient(135deg, var(--accent) 0%, #f3d99d 100%); }
.btn-secondary { color: var(--text); background: #edf9f8; border: 1px solid #bfe9e7; }
.btn-ghost { color: var(--muted); background: transparent; border: 1px solid #d7dce5; padding: 0.5rem 0.8rem; }
.quiz { padding: 1rem; display: grid; gap: 1rem; }
.quiz-top { display: flex; justify-content: space-between; gap: 0.8rem; align-items: flex-start; }
.meta { margin: 0; color: var(--muted); }
.meta.strong { margin-top: 0.25rem; color: var(--text); font-weight: 700; }
.chip-row { display: flex; flex-wrap: wrap; gap: 0.4rem; justify-content: flex-end; }
.chip { border-radius: 999px; padding: 0.35rem 0.7rem; font-size: 0.82rem; background: #f7f8fb; border: 1px solid #e5e7eb; }
.question-card { display: grid; gap: 1rem; grid-template-columns: 1.2fr 1fr; }
.hand-block { background: #f8fafc; border-radius: 12px; padding: 0.9rem; border: 1px solid #e5e7eb; }
.hand-block h2 { margin: 0 0 0.4rem; font-size: 1rem; }
.hand-text { margin: 0; font-size: clamp(1.05rem, 2.1vw, 1.3rem); line-height: 1.55; letter-spacing: 0.03em; }
.hand-text-fallback { margin-top: 0.55rem; font-size: 0.85rem; color: var(--muted); }
.tile-line { display: flex; flex-wrap: wrap; gap: 0.28rem; align-items: flex-end; margin: 0.15rem 0 0.25rem; min-height: 2.6rem; }
.tile-group-gap { width: 0.65rem; height: 1px; }
.tile-image { width: 1.9rem; height: auto; border-radius: 4px; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,0.12); }
.tile-image-win { margin-left: 0.7rem; }
.tile-caption { font-size: 0.78rem; color: var(--muted); margin-right: 0.35rem; }
.cond-tile { margin-top: 0.35rem; display: flex; align-items: center; gap: 0.4rem; min-height: 2rem; }
.cond-tile .tile-image { width: 1.55rem; }
.cond-tile .subtle-inline { color: var(--muted); font-size: 0.82rem; }
.subtle { color: var(--muted); margin: 0.35rem 0 0; }
.conditions-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.55rem; }
.cond { background: #fff; border: 1px solid #e5e7eb; border-radius: 12px; padding: 0.7rem 0.75rem; }
.cond span { display: block; font-size: 0.75rem; color: var(--muted); }
.cond strong { display: block; margin-top: 0.28rem; font-size: 0.95rem; font-weight: 700; }
.answer-area { display: grid; gap: 0.8rem; }
.answer-inputs { display: grid; gap: 0.65rem; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.answer-inputs .field { background: #f8fafc; border: 1px solid #e5e7eb; border-radius: 12px; padding: 0.7rem; }
.answer-inputs .field span { font-size: 0.8rem; }
.answer-inputs .field input { margin-top: 0.35rem; }
.result-panel { border-top: 1px solid #e5e7eb; padding-top: 0.8rem; display: grid; gap: 0.55rem; }
.judge { margin: 0; font-size: 1.1rem; font-weight: 700; }
.judge.ok { color: var(--ok); }
.judge.ng { color: var(--danger); }
.yaku-wrap { background: #f8fafc; border-radius: 12px; padding: 0.7rem; border: 1px solid #e5e7eb; }
.yaku-list { margin: 0.35rem 0 0; padding-left: 1.1rem; }
.yaku-list li { margin: 0.2rem 0; }
#summaryPanel { padding: 1rem; }
.summary-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0.7rem; margin: 0.8rem 0 1rem; }
.summary-item { border-radius: 12px; padding: 0.8rem; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); }
.summary-item span { display: block; font-size: 0.77rem; color: var(--muted); }
.summary-item strong { display: block; margin-top: 0.35rem; font-size: 1rem; }
.ranking { padding: 1rem; }
.ranking-head { display: flex; justify-content: space-between; align-items: center; gap: 0.6rem; }
.ranking-head h2 { margin: 0; font-size: 1rem; }
.ranking-list { margin: 0.8rem 0 0; padding-left: 1.25rem; display: grid; gap: 0.45rem; }
.ranking-list li { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06); border-radius: 10px; padding: 0.55rem 0.65rem; }
.ranking-main { display: flex; justify-content: space-between; gap: 0.6rem; }
.ranking-meta { margin-top: 0.2rem; color: var(--muted); font-size: 0.82rem; }
.credits { padding: 1rem; }
.credits h2 { margin: 0 0 0.45rem; font-size: 1rem; }
.credits a { color: var(--accent-2); text-decoration: underline; text-underline-offset: 2px; }
.credits a:hover { color: #b6fff3; }
.credits-links { line-height: 1.7; }
.hidden { display: none !important; }
@media (max-width: 820px) {
  .controls { grid-template-columns: 1fr; align-items: stretch; }
  .question-card { grid-template-columns: 1fr; }
  .answer-inputs { grid-template-columns: 1fr; }
  .summary-grid { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}