/* Forked from charlies-history/index.html (inline <style>) @ 266dac4. Geography-specific rules live in geo.css. */
  :root {
    --bg: #050b1a;
    --ink: #eaf6ff;
    --muted: #9fb6d1;
    --dim: #6c84a3;
    --glass: rgba(10, 22, 46, 0.72);
    --glass-2: rgba(16, 34, 68, 0.78);
    --line: rgba(120, 200, 255, 0.22);
    --cyan: #6ee7ff;
    --pink: #ff5fd2;
    --gold: #ffd54a;
    --good: #5cf2a0;
    --bad: #ff6b81;
    --era: #6ee7ff;
    --hud: "Chakra Petch", ui-monospace, Menlo, Consolas, monospace;
    --body: "Lexend", system-ui, -apple-system, "Segoe UI", sans-serif;
    --zhf: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --cut: 14px;
  }
  * { box-sizing: border-box; }
  html, body { margin: 0; height: 100%; background: var(--bg); color: var(--ink); font-family: var(--body); overflow: hidden; }
  body { -webkit-tap-highlight-color: transparent; }
  button { font: inherit; color: inherit; cursor: pointer; }
  a { color: var(--cyan); }

  #app { position: fixed; inset: 0; }
  #globe { position: absolute; inset: 0; touch-action: none; cursor: grab; transition: filter .6s ease, opacity .6s ease; }
  #globe:active { cursor: grabbing; }
  #globe canvas { position: absolute; inset: 0; }
  .gm-layer { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
  #app.dim #globe { filter: saturate(.8) brightness(.55); }
  .fxbg { position: absolute; inset: 0; pointer-events: none;
    background:
      radial-gradient(1200px 700px at 20% -10%, rgba(255,95,210,.10), transparent 60%),
      radial-gradient(900px 700px at 110% 110%, rgba(110,231,255,.10), transparent 60%); }
  .scan { position: absolute; inset: 0; pointer-events: none; z-index: 2;
    background: repeating-linear-gradient(to bottom, rgba(255,255,255,.025) 0 1px, transparent 1px 3px);
    mask-image: radial-gradient(ellipse at center, transparent 40%, #000 100%); }
  .stars { position: absolute; inset: 0; pointer-events: none;
    background-image:
      radial-gradient(1px 1px at 10% 20%, #fff8, transparent), radial-gradient(1px 1px at 30% 80%, #fff6, transparent),
      radial-gradient(1px 1px at 70% 30%, #fff7, transparent), radial-gradient(1.5px 1.5px at 85% 70%, #fff9, transparent),
      radial-gradient(1px 1px at 50% 50%, #fff5, transparent), radial-gradient(1px 1px at 92% 12%, #fff8, transparent),
      radial-gradient(1px 1px at 18% 62%, #fff6, transparent), radial-gradient(1.5px 1.5px at 62% 88%, #fff7, transparent); }

  /* ---------- map DOM bits ---------- */
  .gm-pin { position: absolute; left: 0; top: 0; display: flex; align-items: center; gap: 6px; --c: var(--gold);
    animation: pinIn .5s cubic-bezier(.3,1.6,.5,1) both; will-change: transform; }
  .gm-dot { position: relative; width: 16px; height: 16px; margin: -8px 0 0 -8px; border-radius: 50%;
    background: var(--c); box-shadow: 0 0 0 3px rgba(0,0,0,.45), 0 0 16px var(--c);
    display: grid; place-items: center; font-size: 10px; color: #000; font-weight: 700; }
  .gm-dot::after { content: ""; position: absolute; inset: -6px; border-radius: 50%; border: 2px solid var(--c); animation: pulse 1.8s ease-out infinite; }
  .kind-battle .gm-dot { --c: #ff6b6b; border-radius: 4px; transform: rotate(45deg); }
  .kind-battle .gm-dot { font-size: 0; }
  .kind-capital .gm-dot { --c: var(--gold); width: 20px; height: 20px; margin: -10px 0 0 -10px; font-size: 13px; }
  .kind-sad .gm-dot { --c: #c9d6ff; box-shadow: 0 0 0 3px rgba(0,0,0,.45); }
  .kind-sad .gm-dot::after { display: none; }
  .gm-plabel { margin-top: -8px; font: 600 13px/1.1 var(--body); color: #fff; padding: 3px 7px; border-radius: 6px;
    background: rgba(4,12,28,.78); border: 1px solid color-mix(in srgb, var(--c) 60%, transparent); white-space: nowrap; }
  .gm-pin.nolabel .gm-plabel { opacity: 0; }
  .gm-pin.flip { flex-direction: row-reverse; translate: -100% 0; }
  .gm-pin.flip .gm-dot { margin: -8px -8px 0 0; }
  .gm-pin.flip.kind-capital .gm-dot { margin: -10px -10px 0 0; }
  .gm-plabel i { font-style: normal; color: var(--gold); font-family: var(--hud); }
  .gm-stop:not(.current) .gm-plabel { display: none; }   /* past stops: dot only, so nearby capitals don't pile up */
  .gm-stop:not(.current) .gm-dot { width: 12px; height: 12px; margin: -6px 0 0 -6px; font-size: 0; }
  .gm-stop:not(.current) .gm-dot::after { display: none; }
  .gm-stop.current { z-index: 2; }
  .gm-stop.current .gm-plabel { background: var(--gold); color: #1a1200; }
  .gm-stop.current .gm-plabel i { color: #4a3300; }
  .gm-tlabel { position: absolute; left: 0; top: 0; translate: -50% -50%; font: 700 14px/1 var(--hud); letter-spacing: 2px; text-transform: uppercase;
    color: #fff; text-shadow: 0 0 6px #000, 0 0 2px #000, 0 0 14px var(--c); white-space: nowrap; transition: opacity .3s; }
  .gm-head { position: absolute; left: 0; top: 0; font-size: 26px; translate: -50% -55%; filter: drop-shadow(0 2px 4px #000); }
  .gm-counter { position: absolute; left: 0; top: 0; font: 600 12px/1.2 var(--hud); background: rgba(4,12,28,.85); border: 1px solid var(--gold);
    color: #fff; padding: 4px 8px; border-radius: 6px; white-space: nowrap; }
  .gm-counter b { color: var(--gold); font-size: 15px; }
  .gm-counter small { color: var(--muted); }
  .tapmark { position: absolute; width: 22px; height: 22px; margin: -11px 0 0 -11px; border-radius: 50%; border: 3px solid #fff; pointer-events: none; z-index: 5; }
  .tapmark.ok { border-color: var(--good); box-shadow: 0 0 18px var(--good); }
  .tapmark.no { border-color: var(--bad); box-shadow: 0 0 18px var(--bad); }
  @keyframes pinIn { from { opacity: 0; scale: .2; } to { opacity: 1; scale: 1; } }
  @keyframes pulse { from { opacity: .9; transform: scale(.6); } to { opacity: 0; transform: scale(2.2); } }

  /* ---------- shared UI ---------- */
  .glass { background: var(--glass); backdrop-filter: blur(14px) saturate(1.3); -webkit-backdrop-filter: blur(14px) saturate(1.3);
    border: 1px solid var(--line); box-shadow: 0 20px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06); }
  .cut { clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut)); }
  .hud { font-family: var(--hud); text-transform: uppercase; letter-spacing: 1.5px; }
  .btn { font-family: var(--hud); font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; font-size: 15px;
    padding: 12px 20px; border: 1px solid color-mix(in srgb, var(--era) 70%, transparent);
    background: linear-gradient(180deg, color-mix(in srgb, var(--era) 30%, transparent), color-mix(in srgb, var(--era) 12%, transparent));
    color: #fff; clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
    transition: transform .12s ease, filter .15s ease, background .2s; min-height: 48px; }
  .btn:hover { filter: brightness(1.25); }
  .btn:active { transform: translateY(1px) scale(.98); }
  .btn.primary { background: linear-gradient(180deg, var(--era), color-mix(in srgb, var(--era) 55%, #000)); color: #04101f; text-shadow: none; border-color: transparent; }
  .btn.ghost { background: rgba(255,255,255,.04); border-color: var(--line); }
  .btn[disabled] { opacity: .35; pointer-events: none; }
  .iconbtn { width: 44px; height: 44px; display: grid; place-items: center; font-size: 19px; border-radius: 12px;
    background: rgba(255,255,255,.06); border: 1px solid var(--line); transition: background .2s, transform .1s; }
  .iconbtn:hover { background: rgba(110,231,255,.16); }
  .iconbtn:active { transform: scale(.94); }
  .iconbtn.on { background: rgba(110,231,255,.22); border-color: var(--cyan); }

  /* ---------- HUD ---------- */
  #hud { position: absolute; top: 0; left: 0; right: 0; z-index: 20; display: flex; align-items: center; gap: 12px;
    padding: 12px 16px; padding-top: max(12px, env(safe-area-inset-top)); pointer-events: none; }
  #hud > * { pointer-events: auto; }
  .home { font: 600 13px var(--hud); color: var(--muted); text-decoration: none; letter-spacing: 1px; white-space: nowrap; }
  .home:hover { color: #fff; }
  .logo-sm { font: 700 18px var(--hud); letter-spacing: 3px; text-transform: uppercase; white-space: nowrap; cursor: pointer;
    background: linear-gradient(90deg, var(--cyan), var(--pink)); -webkit-background-clip: text; background-clip: text; color: transparent; }
  .xpbox { margin-left: auto; display: flex; align-items: center; gap: 10px; padding: 6px 12px; border-radius: 12px; }
  .rank { font: 700 12px var(--hud); letter-spacing: 1.5px; text-transform: uppercase; color: var(--gold); white-space: nowrap; }
  .xpbar { width: 140px; height: 8px; border-radius: 99px; background: rgba(255,255,255,.1); overflow: hidden; }
  .xpbar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--cyan), var(--pink)); box-shadow: 0 0 12px var(--cyan); transition: width .8s cubic-bezier(.2,.9,.2,1); }
  .xpnum { font: 700 13px var(--hud); color: #fff; white-space: nowrap; }
  .hudbtns { display: flex; gap: 8px; }
  .zhbtn { font-family: var(--zhf); font-size: 16px; }

  /* ---------- screens ---------- */
  .screen { position: absolute; inset: 0; z-index: 10; pointer-events: none; opacity: 0; visibility: hidden; transition: opacity .45s ease, visibility 0s linear .45s; }
  .screen.on { opacity: 1; visibility: visible; transition: opacity .45s ease; }
  .screen.on > * { pointer-events: auto; }

  /* title */
  #scr-title { display: grid; place-items: center; text-align: center; }
  #scr-title.on { pointer-events: none; }
  .title-wrap { pointer-events: none !important; display: flex; flex-direction: column; align-items: center; gap: 14px; }
  .title-wrap > * { pointer-events: auto; }
  .kicker { font: 600 14px var(--hud); letter-spacing: 6px; color: var(--cyan); text-transform: uppercase; }
  .big-logo { margin: 0; font: 700 clamp(44px, 9vw, 110px)/.9 var(--hud); letter-spacing: 4px; text-transform: uppercase;
    background: linear-gradient(180deg, #fff 10%, var(--cyan) 55%, var(--pink)); -webkit-background-clip: text; background-clip: text; color: transparent;
    filter: drop-shadow(0 0 30px rgba(110,231,255,.45)); animation: glitch 4s steps(1) infinite; }
  @keyframes glitch {
    0%, 92%, 100% { transform: none; }
    93% { transform: translate(-3px, 1px) skewX(-6deg); }
    95% { transform: translate(3px, -1px) skewX(4deg); }
    97% { transform: translate(-1px, 0); }
  }
  .tag { color: var(--muted); font-size: 18px; max-width: 520px; }
  .press { margin-top: 18px; font-size: 20px; padding: 16px 34px; animation: breathe 2s ease-in-out infinite; }
  @keyframes breathe { 50% { filter: brightness(1.35); box-shadow: 0 0 40px var(--era); } }

  /* campaign: the 9 sections as a grid that fits the screen (no scrolling on iPad) */
  #scr-campaign { padding: 72px 16px 16px; }
  .camp { height: 100%; max-width: 1240px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
  .camp-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; justify-content: space-between; }
  .camp-head h1 { margin: 0; font: 700 clamp(22px, 3.2vw, 32px)/1.1 var(--hud); letter-spacing: 2px; text-transform: uppercase; }
  .camp-head p { margin: 2px 0 0; color: var(--muted); font-size: 14px; }
  .camp-tools { display: flex; flex-wrap: wrap; gap: 6px; }
  .tool { display: flex; align-items: center; gap: 6px; padding: 8px 12px; min-height: 40px; border-radius: 12px; border: 1px solid var(--line);
    background: rgba(10,22,46,.75); backdrop-filter: blur(8px); font: 700 13px var(--hud); letter-spacing: 1px; text-transform: uppercase; }
  .tool:hover { background: rgba(110,231,255,.16); border-color: var(--cyan); }
  .tool.go { background: linear-gradient(180deg, var(--cyan), #2aa6c4); color: #04101f; border-color: transparent; }
  .eras { flex: 1; min-height: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); grid-auto-rows: minmax(0, 1fr); gap: 12px; }
  .era { --era: #6ee7ff; position: relative; min-height: 0; overflow: hidden; text-align: left; padding: 14px 14px 12px;
    display: grid; grid-template-columns: auto 1fr; grid-template-rows: 1fr auto; gap: 8px 12px; align-items: start;
    background: linear-gradient(140deg, color-mix(in srgb, var(--era) 24%, rgba(10,22,46,.88)), rgba(8,16,34,.88));
    border: 1px solid color-mix(in srgb, var(--era) 45%, transparent); border-radius: 18px;
    transition: transform .18s ease, filter .2s, box-shadow .2s; animation: cardIn .5s cubic-bezier(.2,.9,.2,1) both; }
  .era:hover, .era:focus-visible { transform: translateY(-3px); filter: brightness(1.12); box-shadow: 0 0 0 2px var(--era), 0 12px 40px rgba(0,0,0,.4); outline: none; }
  .era:active { transform: scale(.98); }
  @keyframes cardIn { from { opacity: 0; transform: translateY(18px) scale(.97); } }
  .era-icon { width: clamp(52px, 8vh, 84px); aspect-ratio: 1; border-radius: 14px; background: rgba(0,0,0,.3); border: 1px solid color-mix(in srgb, var(--era) 40%, transparent);
    display: grid; place-items: center; overflow: hidden; }
  .era-icon svg { width: 92%; height: 92%; }
  .era-info { min-width: 0; padding-right: 30px; }
  .era-title { font: 700 clamp(15px, 1.9vw, 20px)/1.15 var(--hud); letter-spacing: .5px; text-transform: uppercase; }
  .era-dates { margin-top: 3px; font: 600 12.5px var(--hud); color: var(--era); letter-spacing: .5px; }
  .era-blurb { margin-top: 6px; color: var(--muted); font-size: 13.5px; line-height: 1.35; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
  .era-foot { grid-column: 1 / -1; display: flex; align-items: center; gap: 10px; }
  .era-bar { flex: 1; height: 7px; border-radius: 99px; background: rgba(255,255,255,.1); overflow: hidden; }
  .era-bar i { display: block; height: 100%; background: var(--era); box-shadow: 0 0 10px var(--era); }
  .era-stars { font: 700 13px var(--hud); color: rgba(255,255,255,.35); white-space: nowrap; }
  .era-stars.some { color: var(--gold); }
  .badge-slot { position: absolute; top: 10px; right: 10px; width: 32px; height: 32px; opacity: .25; filter: grayscale(1); }
  .badge-slot.won { opacity: 1; filter: none; animation: shine 3s ease-in-out infinite; }
  @keyframes shine { 50% { filter: drop-shadow(0 0 10px var(--gold)); } }
  @media (max-height: 700px) and (min-width: 821px) { .era-blurb { -webkit-line-clamp: 2; } }

  /* group toggle + tabs */
  .groupbar { display: flex; align-items: center; gap: 10px; min-width: 0; }
  .seg.groupby { flex: none; background: rgba(10,22,46,.8); backdrop-filter: blur(8px); }
  .seg.groupby button { font: 700 13px var(--hud); letter-spacing: .5px; text-transform: uppercase; padding: 9px 12px; white-space: nowrap; }
  .gtabs { flex: 1; min-width: 0; display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; padding: 2px; }
  .gtabs::-webkit-scrollbar { display: none; }
  .gtab { flex: none; display: flex; align-items: center; gap: 6px; padding: 8px 12px; min-height: 40px; border-radius: 99px; border: 1px solid var(--line);
    background: rgba(10,22,46,.7); backdrop-filter: blur(8px); font: 600 14px var(--body); white-space: nowrap; transition: background .15s, border-color .15s; }
  .gtab:hover { border-color: var(--cyan); }
  .gtab.on { background: linear-gradient(180deg, var(--cyan), #2aa6c4); color: #04101f; border-color: transparent; font-weight: 700; }
  .gtab .gn { font: 700 11px var(--hud); padding: 1px 6px; border-radius: 99px; background: rgba(255,255,255,.12); }
  .gtab.on .gn { background: rgba(4,16,31,.2); }
  .eras { grid-template-rows: repeat(3, minmax(0, 1fr)); }
  .pager { display: flex; align-items: center; justify-content: center; gap: 12px; font: 700 13px var(--hud); color: var(--muted); }
  .pager .tool[disabled] { opacity: .35; pointer-events: none; }
  .river-filter { display: flex; align-items: center; gap: 8px; margin-top: 6px; font: 600 14px var(--body); color: var(--cyan); }
  .river-filter:empty { display: none; }

  /* one section's screen */
  #era-panel { position: absolute; top: 72px; left: 16px; bottom: 16px; width: min(440px, 45vw); display: flex; flex-direction: column; gap: 12px; padding: 18px; --cut: 18px; overflow-y: auto; }
  #era-panel .back { align-self: flex-start; background: none; border: 0; padding: 4px 0; color: var(--muted); font: 700 13px var(--hud); letter-spacing: 1px; text-transform: uppercase; }
  #era-panel .back:hover { color: #fff; }
  .ep-head { display: flex; gap: 14px; align-items: center; }
  .ep-head .era-icon { width: 76px; }
  .ep-head h1 { margin: 0; font: 700 26px/1.1 var(--hud); letter-spacing: 1px; text-transform: uppercase; }
  .ep-blurb { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.45; }
  .ep-levels { display: flex; flex-direction: column; gap: 8px; }
  .ep-lvl { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 14px; text-align: left; min-height: 58px;
    background: rgba(255,255,255,.05); border: 1px solid var(--line); transition: background .15s, border-color .15s, transform .1s; }
  .ep-lvl:hover { background: color-mix(in srgb, var(--era) 22%, transparent); border-color: var(--era); }
  .ep-lvl:active { transform: scale(.99); }
  .ep-lvl.next { border-color: var(--era); box-shadow: 0 0 0 1px var(--era), 0 0 18px color-mix(in srgb, var(--era) 35%, transparent); }
  .ep-lvl .lvn { flex: none; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; font: 700 16px var(--hud); background: color-mix(in srgb, var(--era) 35%, transparent); }
  .ep-lvl .lvt { flex: 1; font: 600 16px/1.25 var(--body); }
  .ep-lvl .lvt small { display: block; margin-top: 2px; color: var(--muted); font-size: 12.5px; }
  .ep-lvl .st { flex: none; font-size: 22px; color: rgba(255,255,255,.18); }
  .ep-lvl.done .st { color: var(--gold); text-shadow: 0 0 10px var(--gold); }
  .ep-levels.many { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
  .ep-levels.many .ep-lvl { min-height: 0; padding: 7px 9px; gap: 8px; border-radius: 11px; }
  .ep-levels.many .lvn { width: 26px; height: 26px; font-size: 13px; border-radius: 8px; }
  .ep-levels.many .lvt { font-size: 13px; line-height: 1.2; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .ep-levels.many .lvt small { font-size: 11px; }
  .ep-levels.many .st { font-size: 16px; }
  .ep-foot { margin-top: auto; display: flex; align-items: center; gap: 12px; }
  .ep-foot .badge-slot { position: static; width: 46px; height: 46px; }
  .ep-foot .btn { flex: 1; font-size: 17px; }

  /* mission */
  #mission-card { position: absolute; top: 74px; right: 16px; bottom: 112px; width: min(430px, 40vw); display: flex; flex-direction: column; --cut: 18px; }
  .card-scroll { overflow-y: auto; padding: 18px 20px 14px; flex: 1; scrollbar-width: thin; }
  .card-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
  .chip { font: 700 11px var(--hud); letter-spacing: 1.5px; text-transform: uppercase; color: var(--era); padding: 4px 8px; border: 1px solid color-mix(in srgb, var(--era) 50%, transparent); border-radius: 6px; }
  .year { font: 700 44px/1 var(--hud); margin: 12px 0 0; color: #fff; text-shadow: 0 0 22px color-mix(in srgb, var(--era) 70%, transparent); font-variant-numeric: tabular-nums; }
  .year.long { font-size: 30px; line-height: 1.1; }
  .datelabel { font: 600 14px var(--hud); color: var(--era); letter-spacing: 1px; margin-top: 4px; }
  .ch-title { margin: 8px 0 12px; font: 700 26px/1.15 var(--body); }
  .art { position: relative; aspect-ratio: 16 / 9; border-radius: 12px; overflow: hidden; margin-bottom: 14px;
    background: radial-gradient(circle at 50% 30%, color-mix(in srgb, var(--era) 25%, #0b1a33), #050b1a); border: 1px solid var(--line); }
  .art svg { position: absolute; inset: 0; width: 100%; height: 100%; }
  .art.enter svg { animation: artIn .7s cubic-bezier(.2,.9,.2,1) both; }
  @keyframes artIn { from { opacity: 0; transform: scale(1.08) translateY(6px); } }
  .ch-text p { margin: 0 0 10px; font-size: 17.5px; line-height: 1.55; }
  .ch-text b { color: #fff; }
  .box { margin: 12px 0 0; padding: 11px 13px; border-radius: 12px; font-size: 15.5px; line-height: 1.45; }
  .box h4 { margin: 0 0 3px; font: 700 12px var(--hud); letter-spacing: 1.5px; text-transform: uppercase; }
  .fact { background: rgba(255,213,74,.10); border: 1px solid rgba(255,213,74,.35); }
  .fact h4 { color: var(--gold); }
  .word { background: rgba(110,231,255,.08); border: 1px solid rgba(110,231,255,.3); }
  .word h4 { color: var(--cyan); }
  .word b { font-size: 17px; }
  .zhrow { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
  .zh { display: flex; flex-direction: column; align-items: center; padding: 6px 10px 7px; border-radius: 10px; background: rgba(255,95,95,.08); border: 1px solid rgba(255,120,120,.32); min-width: 64px; }
  .zh .py { font: 500 13px var(--body); color: #ffc0c0; }
  .zh .hz { font: 700 24px/1.15 var(--zhf); color: #fff; }
  .zh .en { font-size: 11.5px; color: var(--muted); }
  .actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
  .actions .btn { font-size: 13px; padding: 10px 14px; min-height: 44px; }
  .btn.story { --era: #ff5fd2; animation: wiggle 2.6s ease-in-out infinite; }
  @keyframes wiggle { 0%, 80%, 100% { transform: none; } 85% { transform: rotate(-2deg); } 90% { transform: rotate(2deg); } 95% { transform: rotate(-1deg); } }
  .sources { margin-top: 14px; font-size: 12px; color: var(--dim); }
  .sources summary { cursor: pointer; font-family: var(--hud); letter-spacing: 1px; text-transform: uppercase; }
  .sources ul { margin: 6px 0 0; padding-left: 18px; }
  .card-nav { display: flex; gap: 10px; padding: 12px 16px 16px; border-top: 1px solid var(--line); }
  .card-nav .btn { flex: 1; }
  #mission-card.remember { --era: #b8c6ff; }
  #mission-card.remember .year { text-shadow: none; }
  .candle { display: block; margin: 0 auto; }

  /* timeline scrubber */
  #scrub { position: absolute; left: 16px; right: calc(min(430px, 40vw) + 32px); bottom: 16px; height: 84px; padding: 10px 22px; --cut: 14px; display: flex; flex-direction: column; justify-content: center; }
  .scrub-head { display: flex; justify-content: space-between; font: 700 12px var(--hud); letter-spacing: 1.5px; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
  .scrub-head b { color: var(--era); }
  .rail { position: relative; height: 34px; }
  .rail::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 4px; margin-top: -2px; background: rgba(255,255,255,.1); border-radius: 4px; }
  .rail .fill { position: absolute; left: 0; top: 50%; height: 4px; margin-top: -2px; border-radius: 4px; background: linear-gradient(90deg, var(--era), #fff); box-shadow: 0 0 12px var(--era); transition: width .5s ease; }
  .node { position: absolute; top: 50%; width: 22px; height: 22px; margin: -11px 0 0 -11px; border-radius: 50%; background: #0b1a33; border: 2px solid rgba(255,255,255,.3); padding: 0; transition: transform .15s, background .2s; }
  .node:hover { transform: scale(1.25); }
  .node.seen { border-color: var(--era); background: color-mix(in srgb, var(--era) 40%, #0b1a33); }
  .node.cur { background: var(--era); border-color: #fff; box-shadow: 0 0 16px var(--era); transform: scale(1.2); }
  .node.boss { width: 34px; height: 34px; margin: -17px 0 0 -17px; border-radius: 8px; transform: rotate(45deg); background: #2a0f2a; border-color: var(--pink); }
  .node.boss span { display: block; transform: rotate(-45deg); font-size: 15px; }
  .node.boss.done { background: var(--gold); border-color: #fff; }
  .node .tip { position: absolute; bottom: 30px; left: 50%; translate: -50% 0; font: 600 11px var(--hud); white-space: nowrap; color: var(--muted); pointer-events: none; opacity: 0; transition: opacity .2s; }
  .node:hover .tip { opacity: 1; color: #fff; }
  .node.boss .tip { transform: rotate(-45deg); bottom: 40px; }
  #recenter { position: absolute; left: 16px; bottom: 116px; display: none; }
  #recenter.show { display: grid; }

  /* quiz */
  #quiz-card { position: absolute; top: 74px; right: 16px; width: min(460px, 42vw); max-height: calc(100% - 92px); overflow-y: auto; padding: 22px; --cut: 18px; }
  .q-top { display: flex; justify-content: space-between; align-items: center; }
  .q-dots { display: flex; gap: 6px; }
  .q-dots i { width: 12px; height: 12px; border-radius: 3px; background: rgba(255,255,255,.12); transform: rotate(45deg); }
  .q-dots i.ok { background: var(--good); box-shadow: 0 0 8px var(--good); }
  .q-dots i.no { background: var(--bad); }
  .q-dots i.cur { outline: 2px solid #fff; }
  .boss-title { font: 700 13px var(--hud); letter-spacing: 3px; color: var(--pink); text-transform: uppercase; }
  .q-text { font: 700 23px/1.3 var(--body); margin: 14px 0 16px; }
  .choices { display: grid; gap: 10px; }
  .choice { text-align: left; padding: 14px 16px; border-radius: 12px; background: rgba(255,255,255,.06); border: 1px solid var(--line); font-size: 17px; min-height: 54px;
    transition: background .15s, border-color .15s, transform .1s; }
  .choice:hover { background: rgba(110,231,255,.14); border-color: var(--cyan); }
  .choice.ok { background: rgba(92,242,160,.2); border-color: var(--good); }
  .choice.no { background: rgba(255,107,129,.18); border-color: var(--bad); animation: shake .35s; }
  .choice:disabled { cursor: default; }
  @keyframes shake { 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }
  .explain { margin-top: 14px; padding: 12px 14px; border-radius: 12px; background: rgba(255,255,255,.05); border: 1px solid var(--line); font-size: 15.5px; line-height: 1.45; }
  .explain.ok h4 { color: var(--good); } .explain.no h4 { color: var(--gold); }
  .explain h4 { margin: 0 0 4px; font: 700 13px var(--hud); letter-spacing: 1.5px; text-transform: uppercase; }
  .maphint { padding: 12px 14px; border-radius: 12px; border: 1px dashed var(--cyan); color: var(--cyan); font: 600 15px var(--hud); letter-spacing: 1px; text-align: center; animation: breathe 2s infinite; }
  .result { text-align: center; }
  .stars3 { font-size: 46px; letter-spacing: 6px; margin: 10px 0; }
  .stars3 .on { color: var(--gold); text-shadow: 0 0 18px var(--gold); }
  .stars3 .off { color: rgba(255,255,255,.18); }

  /* river of time */
  #scr-river { background: rgba(4,9,22,.92); }
  .river-wrap { position: absolute; inset: 74px 0 0 0; display: flex; flex-direction: column; }
  .river-head { padding: 0 20px 10px; display: flex; flex-wrap: wrap; gap: 10px; align-items: end; justify-content: space-between; }
  .river-head h1 { margin: 0; font: 700 28px var(--hud); letter-spacing: 3px; text-transform: uppercase; }
  .river-head p { margin: 2px 0 0; color: var(--muted); font-size: 14px; }
  #river { flex: 1; position: relative; touch-action: none; cursor: grab; }
  #river svg { position: absolute; inset: 0; width: 100%; height: 100%; }
  .r-lane-label { font: 700 13px var(--hud); letter-spacing: 1px; text-transform: uppercase; fill: #fff; }
  .r-seg { cursor: pointer; transition: filter .15s; }
  .r-seg:hover { filter: brightness(1.4); }
  .r-seg-label { font: 600 11.5px var(--body); fill: #fff; pointer-events: none; }
  .r-dot { cursor: pointer; }
  .r-tick { font: 600 11px var(--hud); fill: var(--muted); }

  /* modal */
  #modal { position: absolute; inset: 0; z-index: 40; display: none; place-items: center; padding: 16px; background: rgba(2,6,16,.6); backdrop-filter: blur(3px); }
  #modal.on { display: grid; animation: fadeIn .25s ease; }
  @keyframes fadeIn { from { opacity: 0; } }
  .modal-box { position: relative; width: min(820px, 100%); max-height: calc(100vh - 32px); overflow-y: auto; padding: 22px 24px; --cut: 20px; animation: pop .35s cubic-bezier(.2,1.4,.4,1); }
  @keyframes pop { from { transform: scale(.9); opacity: 0; } }
  .modal-box h2 { margin: 0 44px 12px 0; font: 700 26px var(--hud); letter-spacing: 1.5px; text-transform: uppercase; }
  .modal-x { position: absolute; top: 14px; right: 14px; }
  .modal-box p { font-size: 17px; line-height: 1.55; }
  .story-stamp { display: inline-block; font: 700 14px var(--hud); letter-spacing: 2px; text-transform: uppercase; padding: 6px 12px; border: 3px solid; border-radius: 8px; transform: rotate(-4deg); margin: 4px 0 10px; }
  .story-stamp.true { color: var(--good); }
  .story-stamp.story { color: var(--gold); }
  .collect-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; }
  .hero { padding: 12px; border-radius: 14px; background: linear-gradient(160deg, color-mix(in srgb, var(--era) 30%, #0b1a33), #08142a); border: 1px solid color-mix(in srgb, var(--era) 50%, transparent); text-align: center; }
  .hero.locked { filter: grayscale(1) brightness(.5); }
  .hero .hz { font: 700 26px var(--zhf); }
  .hero .nm { font: 700 15px var(--hud); letter-spacing: 1px; text-transform: uppercase; margin-top: 4px; }
  .hero .yrs { font: 600 12px var(--hud); color: var(--era); }
  .hero .role { display: inline-block; margin-top: 4px; font: 700 10.5px var(--hud); letter-spacing: 1.5px; text-transform: uppercase; padding: 2px 7px; border-radius: 6px; background: rgba(255,255,255,.08); color: var(--muted); }
  .hero p { font-size: 13px !important; line-height: 1.35 !important; color: var(--muted); margin: 6px 0 0; }
  .hero .face { width: 72px; height: 72px; margin: 0 auto 6px; border-radius: 50%; background: rgba(0,0,0,.3); display: grid; place-items: center; font-size: 34px; border: 2px solid var(--era); }
  .story-item { padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: rgba(255,255,255,.04); margin-bottom: 10px; }
  .story-item h3 { margin: 0 0 4px; font-size: 17px; }
  .story-item p { margin: 0; font-size: 15px !important; }
  .diagram { min-height: 200px; }
  .diagram svg { max-width: 100%; height: auto; display: block; margin: 0 auto; }

  /* toast */
  #toasts { position: absolute; top: 70px; left: 50%; translate: -50% 0; z-index: 50; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
  .toast { font: 700 15px var(--hud); letter-spacing: 1.5px; text-transform: uppercase; padding: 10px 18px; border-radius: 12px; background: rgba(6,14,30,.92); border: 1px solid var(--gold); color: var(--gold);
    box-shadow: 0 0 30px rgba(255,213,74,.35); animation: toast 2.6s ease both; }
  .toast.cyan { border-color: var(--cyan); color: var(--cyan); box-shadow: 0 0 30px rgba(110,231,255,.35); }
  .toast.pink { border-color: var(--pink); color: var(--pink); box-shadow: 0 0 30px rgba(255,95,210,.35); }
  @keyframes toast { 0% { opacity: 0; transform: translateY(-14px) scale(.9); } 12%, 80% { opacity: 1; transform: none; } 100% { opacity: 0; transform: translateY(-10px); } }
  .burst { position: absolute; width: 8px; height: 8px; border-radius: 2px; pointer-events: none; z-index: 60; }


  /* ---------- chapter card: banner + one beat at a time ---------- */
  #mission-card { overflow: hidden; }
  #mission-card .card-top { padding: 12px 14px 8px; display: flex; align-items: center; gap: 8px; }
  #mission-card .card-top .grow { flex: 1; }
  #mission-card .card-top .linkbtn { margin-left: 0; }
  .chip.legend { color: #ffd54a; border-color: #ffd54a88; }
  .banner { position: relative; margin: 0 14px; border-radius: 12px; overflow: hidden; aspect-ratio: 2.5 / 1; flex: none; border: 1px solid var(--line);
    background: radial-gradient(circle at 50% 30%, color-mix(in srgb, var(--era) 25%, #0b1a33), #050b1a); }
  .banner-art, .banner-art svg { position: absolute; inset: 0; width: 100%; height: 100%; }
  .banner.enter .banner-art svg { animation: artIn .7s cubic-bezier(.2,.9,.2,1) both; }
  .banner-text { position: absolute; left: 0; right: 0; bottom: 0; padding: 40px 14px 10px; background: linear-gradient(transparent, rgba(3,8,20,.88) 55%); }
  .banner .year { margin: 0; font-size: 34px; }
  .banner .year.long { font-size: 24px; }
  .banner .datelabel { margin-top: 2px; font-size: 13px; }
  .banner .ch-title { margin: 4px 0 0; font-size: 22px; text-shadow: 0 2px 8px #000; }
  .card-body { flex: 1; min-height: 0; display: flex; flex-direction: column; padding: 12px 18px 4px; }
  .beat { flex: 1; min-height: 0; overflow-x: hidden; overflow-y: auto; scrollbar-width: thin; }
  .beat-page { animation: beatIn .35s ease both; }
  .beat-page p { margin: 0 0 10px; font-size: var(--fs, 19px); line-height: 1.55; }
  .beat-page p:last-child { margin-bottom: 0; }
  @keyframes beatIn { from { opacity: 0; transform: translateX(14px); } }
  .beat-dots { display: flex; justify-content: center; gap: 8px; padding: 10px 0 6px; min-height: 30px; }
  .bd { width: 12px; height: 12px; padding: 0; border-radius: 50%; border: 0; background: rgba(255,255,255,.18); transition: transform .2s, background .2s; }
  .bd.done { background: color-mix(in srgb, var(--era) 55%, #fff 0%); }
  .bd.on { background: var(--era); box-shadow: 0 0 10px var(--era); transform: scale(1.3); }
  .powers { display: flex; flex-wrap: wrap; gap: 6px; padding-bottom: 6px; }
  .pu { font: 600 13.5px var(--body); padding: 8px 11px; border-radius: 10px; border: 1px solid color-mix(in srgb, var(--era) 45%, transparent);
    background: color-mix(in srgb, var(--era) 12%, transparent); color: #fff; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .pu:hover { background: color-mix(in srgb, var(--era) 28%, transparent); }
  .pu.pu-story { --era: #ff5fd2; animation: wiggle 2.6s ease-in-out infinite; }
  .pu.pu-fact { --era: #ffd54a; opacity: .55; }
  .pu.pu-fact.glow { opacity: 1; box-shadow: 0 0 14px rgba(255,213,74,.55); animation: breathe 2s infinite; }
  .pu.phone-only { display: none; }
  .card-nav .btn.chapter { letter-spacing: 1px; }
  .box.big { font-size: 18px; line-height: 1.55; }
  .zhrow.big .zh { min-width: 90px; } .zhrow.big .hz { font-size: 32px; }
  .srclist { margin: 0; padding-left: 20px; } .srclist li { margin: 6px 0; font-size: 15.5px; color: var(--ink); }

  /* the dock: fact / word / Chinese cards above the timeline */
  #dock { position: absolute; left: 16px; right: calc(min(430px, 40vw) + 32px); bottom: 112px; display: flex; gap: 10px; align-items: flex-end; pointer-events: none; }
  #dock > * { pointer-events: auto; }
  .dcard { flex: 1 1 0; min-width: 0; max-height: 170px; overflow: hidden; position: relative; padding: 10px 12px; border-radius: 14px; cursor: pointer;
    background: rgba(8,18,40,.86); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid var(--line);
    font-size: 14.5px; line-height: 1.42; box-shadow: 0 10px 30px rgba(0,0,0,.35); animation: dockIn .45s cubic-bezier(.2,1.2,.4,1) both; }
  .dcard:nth-child(2) { animation-delay: .08s; } .dcard:nth-child(3) { animation-delay: .16s; }
  @keyframes dockIn { from { opacity: 0; transform: translateY(16px); } }
  .dcard h4 { margin: 0 0 4px; font: 700 12px var(--hud); letter-spacing: 1.5px; text-transform: uppercase; }
  .dcard::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 22px; background: linear-gradient(transparent, rgba(8,18,40,.95)); pointer-events: none; }
  .dfact { flex-grow: 1.6; border-color: rgba(255,213,74,.45); } .dfact h4 { color: var(--gold); }
  .dfact.locked { cursor: default; }
  .dfact.locked .dbody { filter: blur(6px); opacity: .5; user-select: none; }
  .dlock { display: none; position: absolute; inset: 30px 10px 10px; place-items: center; text-align: center; font: 700 13px var(--hud); letter-spacing: 1px; color: var(--gold); }
  .dfact.locked .dlock { display: grid; }
  .dfact.pop { animation: factPop .6s cubic-bezier(.2,1.6,.4,1); box-shadow: 0 0 30px rgba(255,213,74,.45); }
  @keyframes factPop { 0% { transform: scale(.9); } 60% { transform: scale(1.05); } 100% { transform: none; } }
  .dfact.remember { border-color: rgba(200,210,255,.4); } .dfact.remember h4 { color: #c9d6ff; }
  .dword { border-color: rgba(110,231,255,.4); } .dword h4 { color: var(--cyan); }
  .dzh { flex-grow: 1.2; border-color: rgba(255,120,120,.4); } .dzh h4 { color: #ffc0c0; }
  .dzh .zhrow { margin-top: 2px; gap: 4px; flex-direction: column; }
  .dzh .zh { flex-direction: row; align-items: baseline; gap: 8px; min-width: 0; padding: 2px 0; background: none; border: 0; }
  .dzh .zh .hz { order: -1; font-size: 19px; white-space: nowrap; } .dzh .zh .py { font-size: 13px; white-space: nowrap; } .dzh .zh .en { display: none; }
  #dock.empty { display: none; }

  @media (max-width: 820px) {
    #dock { display: none; }
    .pu.phone-only { display: inline-block; }
    .banner { aspect-ratio: 3.2 / 1; margin: 0 10px; }
    .powers { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; margin: 0 -14px; padding: 0 14px 6px; }
    .powers::-webkit-scrollbar { display: none; }
    .pu { flex: none; }
    .pu.phone-only .pu-long { display: none; }
    .banner .year { font-size: 26px; } .banner .year.long { font-size: 20px; }
    .banner .ch-title { font-size: 18px; }
    .banner-text { padding-top: 26px; }
    #mission-card .card-top { padding: 8px 10px 6px; }
    .card-body { padding: 8px 14px 2px; }
    .beat-page p { font-size: var(--fs, 17px); }
    .beat-dots { padding: 6px 0 4px; min-height: 22px; }
    .pu { font-size: 12.5px; padding: 7px 9px; }
  }

  /* ---------- phones / portrait tablets: card becomes a bottom sheet ---------- */
  @media (max-width: 820px) {
    #hud { gap: 8px; padding: 10px 12px; }
    .home, .rank { display: none; }
    .xpbar { width: 70px; }
    .logo-sm { font-size: 15px; letter-spacing: 2px; }
    #mission-card { top: auto; left: 8px; right: 8px; bottom: 8px; width: auto; height: 62%; }
    #scrub { left: 8px; right: 8px; bottom: calc(62% + 16px); height: 64px; padding: 6px 16px; }
    .scrub-head { margin-bottom: 2px; font-size: 10.5px; gap: 8px; }
    .scrub-head > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
    .scrub-head > span:last-child { white-space: nowrap; }
    .art { aspect-ratio: 2 / 1; }
    .node .tip { display: none; }
    #recenter { bottom: calc(62% + 90px); left: 10px; }
    #quiz-card { top: auto; left: 8px; right: 8px; bottom: 8px; width: auto; max-height: 58%; }
    .year { font-size: 34px; }
    .ch-title { font-size: 22px; }
    .ch-text p { font-size: 16.5px; }
    #era-panel { top: auto; left: 8px; right: 8px; bottom: 8px; width: auto; max-height: 58%; }
    .ep-head .era-icon { width: 56px; } .ep-head h1 { font-size: 21px; } .ep-blurb { font-size: 14.5px; }
    .ep-lvl { min-height: 50px; padding: 9px 12px; } .ep-lvl .lvt { font-size: 15px; }
  }
  /* phones: a 3 x 3 grid of compact tiles still fits without scrolling */
  @media (max-width: 600px) {
    #scr-campaign { padding: 64px 8px 8px; }
    .camp { gap: 8px; }
    .camp-head p { display: none; }
    .tool { padding: 6px 9px; min-height: 36px; font-size: 11.5px; }
    .tool .tl { display: none; } .tool.go .tl { display: inline; }
    .groupbar { flex-direction: column; align-items: stretch; gap: 6px; }
    .seg.groupby button { flex: 1; padding: 7px 8px; font-size: 12px; }
    .gtab { padding: 6px 10px; min-height: 34px; font-size: 13px; }
    .eras { gap: 8px; }
    .era { grid-template-columns: 1fr; grid-template-rows: auto 1fr auto; justify-items: center; text-align: center; padding: 10px 6px 8px; gap: 4px; border-radius: 14px; }
    .era-icon { width: 48px; }
    .era-info { padding-right: 0; }
    .era-title { font-size: 12.5px; letter-spacing: 0; }
    .era-blurb { display: none; }
    .era-dates { font-size: 10.5px; letter-spacing: 0; }
    .era-foot { width: 100%; gap: 6px; }
    .era-stars { font-size: 11px; }
    .badge-slot { width: 22px; height: 22px; top: 6px; right: 6px; }
  }
  @media (max-width: 440px) {
    .xpbar { display: none; }
    #btn-mute { display: none; }   /* sound lives in Settings on small phones */
    .xpbox { padding: 6px 10px; }
    .iconbtn { width: 40px; height: 40px; }
    .logo-sm { font-size: 13px; letter-spacing: 1.5px; }
  }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  }
  body.calm *, body.calm *::before, body.calm *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }

  /* settings */
  .set-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .set-row b { display: block; font-size: 17px; }
  .set-row small { display: block; color: var(--muted); font-size: 14px; margin-top: 2px; }
  .switch { flex: none; width: 58px; height: 32px; border-radius: 99px; border: 1px solid var(--line); background: rgba(255,255,255,.1); padding: 3px; transition: background .2s; }
  .switch i { display: block; width: 24px; height: 24px; border-radius: 50%; background: #fff; transition: transform .2s; }
  .switch.on { background: var(--good); border-color: transparent; }
  .switch.on i { transform: translateX(26px); }
  .seg { flex: none; display: flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
  .seg button { padding: 9px 12px; background: transparent; border: 0; font: 600 14px var(--body); }
  .seg button + button { border-left: 1px solid var(--line); }
  .seg button.on { background: rgba(110,231,255,.22); color: #fff; }
  .set-h { margin: 20px 0 8px; font: 700 14px var(--hud); letter-spacing: 2px; text-transform: uppercase; color: var(--cyan); }
  .set-h.danger { color: var(--bad); }
  .stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
  .stat { padding: 10px 12px; border-radius: 12px; background: rgba(255,255,255,.05); border: 1px solid var(--line); }
  .stat b { display: block; font: 700 20px var(--hud); color: var(--gold); }
  .stat span { font-size: 13px; color: var(--muted); }
  .btn.danger { --era: #ff6b81; flex: none; }
  .btn.danger.solid { background: linear-gradient(180deg, #ff6b81, #b3243d); border-color: transparent; }
  .confirm { margin-top: 8px; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--bad); background: rgba(255,107,129,.08); }
  .confirm p { margin: 0 0 4px; font-size: 16px !important; }
  .linkbtn { margin-left: auto; width: 34px; height: 30px; border-radius: 8px; border: 1px solid var(--line); background: rgba(255,255,255,.05); font-size: 15px; display: grid; place-items: center; padding: 0; }
  .linkbtn:hover { background: rgba(110,231,255,.16); }
  .linkbox { width: 100%; padding: 12px; border-radius: 10px; border: 1px solid var(--cyan); background: #050b1a; color: #fff; font: 15px var(--body); }
  @media (max-width: 600px) { .set-row { flex-wrap: wrap; } }