:root {
  --navy: #1f2d5c;
  --navy-2: #2f3f78;
  --paper: #f7f5ee;
  --ink: #1e1e1e;
  --muted: #666;
  --of: #3b8ee8;
  --df: #ef8a3c;
  --ball: #ffd23f;
  --accent: #d64545;
  --chip: #e8ecf7;
  --chip-on: #1f2d5c;
  --radius: 12px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--paper); color: var(--ink);
  font-family: -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, sans-serif;
  -webkit-text-size-adjust: 100%; }
a { color: var(--navy); }

header.top { background: var(--navy); color: #fff; padding: 10px 14px; display: flex; align-items: center; gap: 10px; }
header.top h1 { font-size: 17px; margin: 0; flex: 1; line-height: 1.3; }
header.top a.back { color: #fff; text-decoration: none; font-size: 14px; opacity: .9; }
header.top .btn { background: rgba(255,255,255,.15); color: #fff; border: 1px solid rgba(255,255,255,.4);
  border-radius: 8px; padding: 6px 10px; font-size: 13px; }
.purpose { background: var(--navy-2); color: #fff; font-size: 13px; padding: 6px 14px; }

.toolbar { display: flex; align-items: center; gap: 8px; padding: 6px 10px 0; flex-wrap: wrap; }
.btn-restart { white-space: nowrap; border: none; background: var(--navy); color: #fff; border-radius: 999px; padding: 8px 14px; font-size: 13.5px; font-weight: 700; }
.btn-restart:active { transform: scale(.97); }
.btn-mirror { white-space: nowrap; border: 1px solid var(--navy); background: #fff; color: var(--navy); border-radius: 999px; padding: 7px 12px; font-size: 13.5px; font-weight: 700; }
.btn-mirror.on { background: var(--df); border-color: var(--df); color: #fff; }
.toolbar .hint { font-size: 12px; color: var(--muted); }
.court-wrap { position: sticky; top: 0; z-index: 5; background: var(--paper); padding: 6px 6px 2px; box-shadow: 0 2px 6px rgba(0,0,0,.08); }
.court-wrap svg { width: 100%; height: auto; display: block; border-radius: 8px; background: #fff; }

.panel { padding: 10px 14px 120px; }
.stepbar { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.stepbar .dots { display: flex; gap: 6px; }
.stepbar .dot { width: 26px; height: 26px; border-radius: 50%; background: #d8dbe6; color: #fff; font-weight: 700;
  font-size: 13px; display: flex; align-items: center; justify-content: center; }
.stepbar .dot.on { background: var(--navy); }
.stepbar .dot.done { background: #8b96be; }
.stepbar .mode { margin-left: auto; font-size: 12px; color: var(--muted); }
h2.step-title { font-size: 16px; margin: 4px 0 6px; color: var(--navy); line-height: 1.4; }
.step-text { font-size: 15px; line-height: 1.7; margin: 0 0 8px; }
.branch-text { background: #fff4e5; border-left: 4px solid var(--df); padding: 8px 10px; border-radius: 6px; font-size: 14px; line-height: 1.7; margin: 6px 0 8px; }
.guide { background: #e6f6ef; border-left: 4px solid #0a9d6c; padding: 8px 10px; border-radius: 6px; font-size: 14px; line-height: 1.7; margin: 6px 0 8px; color: #114d38; }
ul.notes { margin: 0 0 8px; padding-left: 18px; font-size: 13.5px; line-height: 1.65; color: #333; }
ul.notes li { margin: 2px 0; }

.branches { margin-top: 8px; }
.branches h3 { font-size: 13px; color: var(--muted); margin: 8px 0 4px; font-weight: 600; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { border: 1px solid #c8cee0; background: var(--chip); color: var(--navy); border-radius: 999px; padding: 7px 12px; font-size: 13.5px; line-height: 1.2; }
.chip.on { background: var(--chip-on); color: #fff; border-color: var(--chip-on); }
.chip.main { background: #fff; }
.chip.main.on { background: var(--chip-on); color: #fff; }

.term { border-bottom: 2px dotted var(--of); color: #1b5fb3; cursor: pointer; padding-bottom: 1px; }

.controls { position: fixed; left: 0; right: 0; bottom: 0; background: #fff; border-top: 1px solid #dde;
  padding: 8px 10px calc(8px + env(safe-area-inset-bottom)); display: flex; gap: 8px; align-items: center; z-index: 10; }
.controls button { border: none; border-radius: 10px; font-size: 15px; padding: 12px 10px; font-weight: 700; background: #e9ecf5; color: var(--navy); }
.controls button:active { transform: scale(.97); }
.controls .nav { flex: 1; }
.controls .primary { background: var(--navy); color: #fff; }
.controls .auto.on { background: var(--accent); color: #fff; }
.controls .replay { background: #fff; border: 1px solid #c8cee0; }
.controls .speed { font-size: 13px; padding: 10px 8px; min-width: 52px; }

.sheet { position: fixed; left: 0; right: 0; bottom: 0; background: #fff; border-radius: 16px 16px 0 0; padding: 16px 18px calc(20px + env(safe-area-inset-bottom));
  box-shadow: 0 -4px 20px rgba(0,0,0,.2); z-index: 30; max-height: 70vh; overflow: auto; }
.sheet h4 { margin: 0 0 6px; font-size: 16px; color: var(--navy); }
.sheet p { margin: 0; font-size: 14.5px; line-height: 1.7; }
.sheet .close { position: absolute; right: 12px; top: 10px; border: none; background: #eee; border-radius: 50%; width: 32px; height: 32px; font-size: 16px; }
.scrim { position: fixed; inset: 0; background: rgba(0,0,0,.3); z-index: 25; }
.legend { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px; font-size: 13.5px; margin-top: 8px; }
.legend .k { display: inline-block; width: 18px; height: 18px; border-radius: 50%; vertical-align: middle; margin-right: 6px; }

/* index */
.list { padding: 14px; display: grid; gap: 12px; }
.card { background: #fff; border-radius: var(--radius); padding: 14px 16px; text-decoration: none; color: var(--ink); box-shadow: 0 1px 4px rgba(0,0,0,.08); display: block; }
.card .no { font-size: 12px; color: var(--muted); }
.card h2 { margin: 2px 0 4px; font-size: 17px; color: var(--navy); }
.card p { margin: 0; font-size: 13.5px; color: #444; }
.card.soon { opacity: .5; }

@media (min-width: 760px) {
  .app { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; max-width: 1200px; margin: 0 auto; }
  .court-wrap { position: sticky; top: 0; align-self: start; }
  .panel { padding-bottom: 120px; }
  .controls { max-width: 1200px; margin: 0 auto; }
}

/* 目線ページ */
.btn-top { white-space: nowrap; border: 1px solid var(--navy); background: #fff; color: var(--navy); border-radius: 999px; padding: 7px 12px; font-size: 13.5px; font-weight: 700; text-decoration: none; }
header.top a.btn { text-decoration: none; }
.pov-wrap { position: sticky; top: 0; z-index: 5; background: var(--paper); padding: 6px 6px 2px; box-shadow: 0 2px 6px rgba(0,0,0,.08); }
.pov-stage { position: relative; }
canvas#pov { width: 100%; display: block; border-radius: 8px; background: #d5dde8; }
.minimap { position: absolute; top: 6px; right: 6px; width: 118px; background: #fff; border-radius: 6px; box-shadow: 0 1px 4px rgba(0,0,0,.3); overflow: hidden; }
.minimap svg { width: 100%; height: auto; display: block; }
.callout { position: absolute; left: 6px; right: 130px; bottom: 6px; background: rgba(31,45,92,.93); color: #fff; border-radius: 8px; padding: 6px 9px; font-size: 13px; line-height: 1.45; }
.callout .tag { display: inline-block; background: var(--ball); color: #5a3d00; border-radius: 4px; font-size: 11px; font-weight: 700; padding: 0 5px; margin-right: 5px; }
.callout .est { display: inline-block; background: var(--ball); color: #5a3d00; border-radius: 4px; font-size: 11px; font-weight: 700; padding: 0 4px; margin-left: 5px; }
.callout .term { color: #ffe08a; border-bottom-color: #ffe08a; }
.stopbox { position: absolute; left: 50%; top: 8px; transform: translateX(-50%); max-width: 60%; background: rgba(214,69,69,.95); color: #fff; padding: 10px 16px; border-radius: 12px; text-align: center; box-shadow: 0 2px 10px rgba(0,0,0,.3); }
.stopbox .big { font-size: 17px; font-weight: 800; }
.stopbox .small { font-size: 12px; opacity: .95; margin-top: 2px; }
@media (min-width: 760px) { .pov-wrap { position: sticky; top: 0; align-self: start; } }
.controls .primary.resume { background: var(--accent); }
.card.pov { border-left: 5px solid var(--ball); background: #fffbea; }

/* 一覧から直接開ける3Dテストの入口 */
.card.trial3d { background: #edf4e3; border: 2px solid #83a35e; }
.card.trial3d .no { color: #47632f; }
.card.trial3d h2 { color: #234d3e; }
.trial-link { display: inline-block; margin-top: 12px; padding: 8px 13px; border-radius: 8px; background: #234d3e; color: #fff; font-size: 13px; font-weight: 700; }