:root {
  --bg: #14151a;
  --bg-raised: #1d1f27;
  --bg-card: #242732;
  --ink: #e8e6df;
  --ink-dim: #9a9890;
  --gold: #d4a94e;
  --gold-dim: #8a6f34;
  --red: #c05a4e;
  --blue: #5a8fc0;
  --green: #6aa86a;
  --line: #34374a;
  --radius: 12px;
  font-size: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", system-ui, sans-serif;
  min-height: 100vh;
}

#app { max-width: 980px; margin: 0 auto; padding: 16px 20px 8px; display: flex; flex-direction: column; min-height: 100vh; }

/* ---------- header ---------- */
header {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px; padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-glyph {
  font-size: 1.9rem; color: var(--gold);
  writing-mode: vertical-rl; line-height: 1;
  border: 1px solid var(--gold-dim); border-radius: 8px; padding: 6px 3px;
}
h1 { font-size: 1.35rem; letter-spacing: .04em; }
.tagline { color: var(--ink-dim); font-size: .8rem; }
.header-right { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

#drill-select {
  background: var(--bg-card); color: var(--ink);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 10px; font-size: .9rem;
}

#mode-tabs { display: flex; background: var(--bg-card); border-radius: 10px; padding: 4px; gap: 4px; }
.tab {
  background: none; border: none; color: var(--ink-dim);
  padding: 7px 16px; border-radius: 7px; cursor: pointer;
  font-size: .9rem; font-weight: 600;
}
.tab.active { background: var(--gold); color: #1a1508; }
.tab:hover:not(.active) { color: var(--ink); }

/* ---------- stage ---------- */
main { flex: 1; display: flex; flex-direction: column; gap: 14px; padding-top: 14px; }

#stage-wrap {
  background: radial-gradient(ellipse at 50% 30%, #232634 0%, var(--bg-raised) 70%);
  border: 1px solid var(--line); border-radius: var(--radius);
  position: relative; overflow: hidden;
}
#stage { display: block; width: 100%; height: auto; }

#stage-hud {
  position: absolute; top: 10px; left: 14px; right: 14px;
  display: flex; justify-content: space-between;
  font-size: .85rem; color: var(--ink-dim); pointer-events: none;
}
#hud-left b { color: var(--blue); }
#hud-right b { color: var(--red); }

#stage-caption {
  position: absolute; bottom: 8px; left: 0; right: 0;
  text-align: center; pointer-events: none;
}
#stage-caption:not(:empty) > span {
  display: inline-block; padding: 3px 14px 4px; border-radius: 8px;
  background: rgba(16, 17, 22, .72);
  font-size: 1.05rem; letter-spacing: .03em; color: var(--gold);
}
#stage-caption small { display: block; color: var(--ink-dim); font-size: .78rem; }

/* ---------- head-on views ---------- */
#front-wrap { display: flex; flex-direction: column; gap: 6px; }
.front-bar { display: flex; align-items: center; gap: 14px; }
#front-toggle, #guides-toggle, #anatomy-toggle {
  background: none; border: none;
  color: var(--ink-dim); cursor: pointer;
  font-size: .8rem; font-weight: 600; letter-spacing: .05em; padding: 0 2px;
}
#front-toggle:hover, #guides-toggle:hover, #anatomy-toggle:hover { color: var(--gold); }
#guides-toggle.on, #anatomy-toggle.on { color: var(--gold); }
#front-views { display: flex; gap: 14px; }
#front-views.collapsed { display: none; }
#front-views.solo #front-B { display: none; }
#ref-photo[hidden] { display: none !important; }
#ref-photo {
  flex: 1; min-width: 0; margin: 0;
  background: var(--bg-raised); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column;
}
#ref-photo img { width: 100%; height: auto; display: block; object-fit: contain; }
#ref-photo figcaption {
  font-size: .72rem; color: var(--ink-dim); text-align: center; padding: 5px 6px;
}
#front-views svg {
  flex: 1; min-width: 0; height: auto;
  background: radial-gradient(ellipse at 50% 30%, #232634 0%, var(--bg-raised) 75%);
  border: 1px solid var(--line); border-radius: var(--radius);
}

/* ---------- panels ---------- */
.mode-panel { display: flex; flex-direction: column; gap: 12px; }
.hidden { display: none !important; }

.info-card {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px 18px; line-height: 1.5;
  font-size: .95rem;
}
.info-card h3 { color: var(--gold); font-size: 1rem; margin-bottom: 4px; }
.info-card .grading {
  margin-top: 10px; padding: 9px 12px; border-radius: 8px;
  background: #2a2416; border: 1px solid var(--gold-dim);
  color: #e8d5a8; font-size: .85rem; line-height: 1.45;
}
.info-card .mnemonic {
  margin-top: 8px; color: var(--gold); font-style: italic;
  letter-spacing: .03em; font-size: .9rem;
  border-left: 3px solid var(--gold-dim); padding-left: 10px;
}
.info-card .zh { color: var(--ink-dim); font-size: .85rem; margin-left: 6px; }
.info-card .roleTag {
  display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .08em;
  padding: 2px 8px; border-radius: 20px; margin-left: 8px; vertical-align: middle;
}
.roleTag.attack { background: #4a2622; color: #e8998f; }
.roleTag.defend { background: #223a4a; color: #8fc3e8; }
.roleTag.reset  { background: #2c3a2c; color: #a4d0a4; }

.learn-controls { display: flex; gap: 10px; justify-content: center; }
.btn {
  background: var(--bg-card); color: var(--ink);
  border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 20px; font-size: .95rem; cursor: pointer; font-weight: 600;
}
.btn:hover { border-color: var(--gold-dim); }
.btn-gold { background: var(--gold); color: #1a1508; border-color: var(--gold); }
.btn-gold:hover { filter: brightness(1.1); }
.btn:disabled { opacity: .4; cursor: default; }

.step-list {
  display: flex; flex-wrap: wrap; gap: 8px; list-style: none; justify-content: center;
}
.step-list li.frame {
  background: var(--bg-raised); border: 1px solid var(--line);
  border-radius: 10px; padding: 4px 4px 5px; cursor: pointer;
  width: 116px; display: flex; flex-direction: column; align-items: center;
}
.step-list.solo li.frame { width: 88px; }
.step-list li.frame svg {
  width: 100%; height: 88px; display: block;
  background: #1a1c24; border-radius: 6px;
}
.step-list li.frame span {
  font-size: .7rem; color: var(--ink-dim); margin-top: 4px;
  line-height: 1.25; text-align: center;
}
.step-list li.frame b { color: var(--ink); }
.step-list li.frame:hover { border-color: var(--gold-dim); }
.step-list li.frame.current { border-color: var(--gold); background: #2a2416; }
.step-list li.frame.current span, .step-list li.frame.current b { color: var(--gold); }

/* ---------- react mode ---------- */
#react-timer {
  height: 8px; background: var(--bg-card); border-radius: 6px; overflow: hidden;
}
#react-timer-fill {
  height: 100%; width: 100%;
  background: linear-gradient(90deg, var(--green), var(--gold));
  transition: width .1s linear;
}
.choice-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px;
}
.choice-grid .btn { padding: 14px 10px; position: relative; }
.choice-grid .btn small { display: block; font-weight: 400; color: var(--ink-dim); font-size: .75rem; }
.choice-grid .btn .key {
  position: absolute; top: 5px; left: 7px;
  font-size: .62rem; color: var(--ink-dim); font-weight: 600;
  border: 1px solid var(--line); border-radius: 4px; padding: 0 4px;
}
.btn.correct { border-color: var(--green); background: #26402699; }
.btn.wrong   { border-color: var(--red);   background: #4a262299; }

.scoreline { display: flex; gap: 18px; font-size: .9rem; margin-top: 6px; color: var(--ink-dim); }
.scoreline b { color: var(--gold); font-size: 1.05rem; }

/* ---------- recall mode ---------- */
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; min-height: 44px; justify-content: center; }
.chip-row.pool { padding: 10px; background: var(--bg-raised); border-radius: var(--radius); border: 1px dashed var(--line); }
.chip {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 20px;
  padding: 8px 14px; font-size: .85rem; cursor: pointer; user-select: none;
}
.chip:hover { border-color: var(--gold-dim); }
.chip.placed { background: #2c3a2c; border-color: var(--green); cursor: default; }
.chip.slot-empty { border-style: dashed; color: var(--ink-dim); cursor: default; }
.chip.shake { animation: shake .3s; border-color: var(--red); }
.chip.hint { border-color: var(--gold); animation: pulseHint 1.1s infinite; }
@keyframes pulseHint {
  50% { box-shadow: 0 0 10px 1px rgba(212, 169, 78, .55); }
}
@keyframes shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-5px); } 75% { transform: translateX(5px); }
}

footer {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  padding: 12px 2px; color: var(--ink-dim); font-size: .75rem;
  border-top: 1px solid var(--line); margin-top: 16px;
}
#best-score { color: var(--gold); }

footer .keys { color: var(--ink-dim); }

@media (max-width: 640px) {
  header { justify-content: center; text-align: center; }
  .brand { justify-content: center; }
  #front-views { flex-direction: column; }
  footer { justify-content: center; text-align: center; }
}
/* Practice Studio */
:root{--bg:#141c1e;--bg-raised:#1b2527;--bg-card:#202b2d;--ink:#efeee6;--ink-dim:#9eafae;--gold:#e4bd79;--gold-dim:#806947;--line:#334144;--blue:#67b4bd;--red:#d88e6b;--radius:16px;font-size:15px}
body{font-family:"Avenir Next",Avenir,"Segoe UI",sans-serif;background:var(--bg)}
button,input,select{font:inherit}button{transition:background .18s,border-color .18s,color .18s}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,[role=button]:focus-visible{outline:2px solid var(--gold);outline-offset:4px}button{touch-action:manipulation}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
#app{display:grid;grid-template-columns:246px minmax(0,1fr);max-width:1800px;padding:0;margin:auto;min-height:100vh}.sidebar{border-right:1px solid var(--line);padding:32px 18px 24px;background:#11191b;display:flex;flex-direction:column;height:100vh;position:sticky;top:0}.brand{color:var(--ink);text-decoration:none;padding:0 12px 30px;gap:13px}.brand-glyph{font-family:serif;font-size:24px;writing-mode:initial;border:0;border-radius:0;border-right:1px solid #806947;padding:0 14px 0 0;line-height:1.08}.brand strong{font-size:17px;letter-spacing:.13em;font-weight:600}.brand small{display:block;font-size:8px;letter-spacing:.25em;color:var(--ink-dim);margin-top:6px}.sidebar-heading{display:flex;justify-content:space-between;font-size:9px;letter-spacing:.16em;color:#9dafae;padding:12px}.sidebar-heading span{color:var(--gold)}.search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:8px;padding:8px 10px;margin:0 8px}.search span{font-size:24px;line-height:16px;color:var(--ink-dim)}.search input{width:100%;background:transparent;border:0;color:var(--ink);font-size:12px;outline-offset:5px}.library-filters{display:flex;gap:5px;margin:14px 8px 16px}.library-filters button{background:none;color:var(--ink-dim);border:0;border-radius:5px;font-size:11px;padding:5px 10px;cursor:pointer}.library-filters button.active{background:#2c3838;color:var(--gold)}#drill-library{overflow-y:auto;flex:1;scrollbar-width:thin;scrollbar-color:#45514c transparent}.library-group{padding:16px 12px 8px;color:#7f9493;font-size:9px;letter-spacing:.15em;text-transform:uppercase}.library-item{display:flex;width:100%;gap:10px;align-items:flex-start;text-align:left;color:#b9c5c2;background:none;border:1px solid transparent;border-radius:8px;padding:12px 10px;cursor:pointer}.library-item.active{background:#28332e;border-color:#52604a;color:#f0d6a4}.library-item:hover{background:#202b2c}.library-item .library-number{font-size:10px;margin-top:3px;color:#708985;font-variant-numeric:tabular-nums}.library-item strong{font-size:12px;display:block;font-weight:500;line-height:1.45}.library-item small{font-size:10px;display:block;color:#8b9f9b;margin-top:3px}.sidebar-note{border-top:1px solid var(--line);padding:22px 10px 0;margin-top:18px}.sidebar-note strong{display:block;font-size:10px;font-weight:500;margin-top:10px}.sidebar-note p{font-size:10px;line-height:1.6;color:#7f9493;margin-top:5px}.small-glyph{font-size:23px;color:var(--gold)}.workspace{min-width:0;padding:0 34px}header{height:76px;padding:0;flex-wrap:nowrap}.breadcrumb,.local-label{font-size:9px;letter-spacing:.14em;color:var(--ink-dim)}.breadcrumb span:first-child{margin:0 12px;color:#61726f}.local-label{display:flex;align-items:center;gap:7px;font-size:8px}.local-label i{width:5px;height:5px;border-radius:100%;background:#99b998}main{padding-top:28px;gap:23px}.lesson-heading{display:flex;justify-content:space-between;align-items:center}.eyebrow{font-size:9px;letter-spacing:.2em;color:var(--gold);font-weight:500}h1{font-family:Georgia,"Times New Roman",serif;font-size:38px;letter-spacing:-.02em;line-height:1.3;font-weight:400;margin-top:7px}.lesson-heading p{color:var(--ink-dim);font-size:12px;margin-top:6px}.lesson-symbol{font-family:serif;font-size:48px;letter-spacing:.12em;color:#475348;padding-right:10px}.mode-row{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}#mode-tabs{background:none;padding:0;gap:22px;border-radius:0}.tab{padding:12px 1px 15px;border-radius:0;border-bottom:2px solid transparent;font-size:9px;letter-spacing:.03em}.tab b{font-size:12px;margin-left:6px;font-weight:500}.tab.active{color:var(--gold);background:none;border-color:var(--gold)}#mode-description{font-size:10px;color:var(--ink-dim)}.practice-grid{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:20px;align-items:stretch}#stage-wrap{background:radial-gradient(ellipse at 50% 55%,#344542,#202c2e 75%);border-color:#3d4b48;border-radius:12px;min-height:474px}#three-stage{position:absolute;inset:0}#three-stage canvas{width:100%;height:100%;display:block;touch-action:none}#stage{position:absolute;top:55px;width:100%;height:calc(100% - 108px)}.stage-toolbar{position:absolute;top:18px;left:20px;right:20px;z-index:3;display:flex;justify-content:space-between;align-items:center;pointer-events:none}.view-switch{padding:3px;border:1px solid #56615b;background:#172021b0;border-radius:7px;pointer-events:auto}.view-switch button{border:0;background:none;color:#adb8b1;font-size:10px;padding:6px 10px;border-radius:4px;cursor:pointer}.view-switch button.active{background:#4a554a;color:#f4e2c2}.stage-badge{font-size:8px;letter-spacing:.15em;color:#a4b4a6}.actor-legend{position:absolute;top:64px;left:23px;display:flex;gap:14px;font-size:9px;color:#b5c1b9;pointer-events:none}.actor-legend span{display:flex;align-items:center;gap:5px}.actor-legend i{width:5px;height:5px;border-radius:100%;display:inline-block}.dot-a{background:#67b4bd}.dot-b{background:#d88e6b}.dot-active{background:var(--gold)}#stage-caption{bottom:63px;z-index:2}#stage-caption:not(:empty)>span{background:#162120d9;border:1px solid #465049;padding:5px 15px;font-size:12px;border-radius:6px}#stage-caption small{font-size:9px;margin-top:2px}.camera-bar{position:absolute;bottom:0;left:0;right:0;padding:12px 18px;border-top:1px solid #52615366;display:flex;align-items:center;justify-content:space-between;background:#18252288}.camera-bar>span{font-size:8px;letter-spacing:.16em;color:#93a59c}.camera-bar>div{display:flex;gap:3px}.camera-bar button{background:none;border:0;border-radius:4px;color:#adbbb0;font-size:10px;padding:6px 9px;cursor:pointer}.camera-bar button.active{background:#4d594b;color:#efdfba}#model-status{position:absolute;top:47%;left:15%;right:15%;text-align:center;font-size:13px;color:var(--gold);pointer-events:none;background:#192425d9;border-radius:10px;padding:12px}#model-status:empty{display:none}#panel{background:#1d282a;border:1px solid var(--line);border-radius:12px;padding:21px;display:flex;flex-direction:column;min-width:0}.panel-heading{display:flex;justify-content:space-between;font-size:9px;letter-spacing:.15em;color:#9aadab;padding-bottom:18px;border-bottom:1px solid var(--line)}#step-counter{color:var(--gold)}.mode-panel{flex:1;gap:14px}.info-card{background:none;border:0;border-radius:0;padding:20px 0 0;font-size:12px;line-height:1.75}.info-card h3{font-family:Georgia,serif;font-size:23px;font-weight:400;line-height:1.25;color:var(--ink);margin-bottom:13px}.info-card .zh{font-family:"Avenir Next",sans-serif;display:block;font-size:10px;margin:8px 0 0;color:var(--gold);line-height:1.6}.info-card p{color:#b0c0bc}.info-card .mnemonic{font-size:11px;line-height:1.6;margin:15px 0 0;color:#e7c795;padding:8px 12px;background:#2d342c;border:0;border-radius:5px;font-style:normal}.info-card .grading{font-size:10px;padding:8px;margin-top:10px}.info-card .roleTag{font-family:inherit;font-size:8px;margin:10px 0 0;letter-spacing:.12em;padding:3px 8px;border-radius:4px}.coach-bottom{margin-top:auto;padding-top:20px}.learn-controls{gap:7px}.btn{font-size:11px;border-radius:7px;padding:10px 12px}.btn-gold{background:#e7c184;border-color:#e7c184;color:#293127}#learn-play{flex:1}#learn-prev,#learn-next{font-size:18px;padding:6px 12px;background:transparent}.progress-track{height:3px;background:#35413b;border-radius:5px;margin-bottom:17px;overflow:hidden}#lesson-progress{height:100%;background:var(--gold);transition:width .3s}.speed-control{display:flex;justify-content:space-between;align-items:center;margin-top:16px;font-size:10px;color:var(--ink-dim)}#play-speed{color:#c7d0c7;background:#253132;border:1px solid #3a4946;border-radius:4px;padding:4px;font-size:10px}.coach-footnote{font-size:9px;color:#839790;line-height:1.6;margin-top:16px}.section-heading{display:flex;align-items:end;justify-content:space-between;margin:4px 0 15px}h2{font-family:Georgia,serif;font-size:21px;font-weight:400;margin-top:5px}.section-heading>span{font-size:10px;color:var(--ink-dim)}.step-list{flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;gap:9px;padding:2px 2px 10px;scrollbar-width:thin;scrollbar-color:#4e594a transparent}.step-list li.frame,.step-list.solo li.frame{flex:1 0 106px;max-width:170px;padding:5px 5px 10px;border-radius:8px;background:#192426;position:relative}.step-list li.frame svg{height:74px;background:#1b282a}.step-list li.frame span{font-size:9px;line-height:1.5}.step-list li.frame.current{background:#33392d;border-color:#b2945f}.step-list li.frame.current svg{background:#2b332a}.step-list li.frame.current:after{content:"";position:absolute;width:4px;height:4px;border-radius:100%;background:var(--gold);top:9px;right:9px}#front-wrap{gap:14px;border-top:1px solid var(--line);padding-top:21px;margin-top:0}.front-bar{justify-content:space-between}.front-bar>div:first-child{display:flex;flex-direction:column;gap:7px}#front-toggle{font-family:Georgia,serif;font-size:20px;letter-spacing:0;color:var(--ink);font-weight:400;text-align:left;padding:0}.detail-toggles{display:flex;gap:14px}#guides-toggle,#anatomy-toggle{font-size:10px;font-weight:400;letter-spacing:0}#front-views svg{max-height:265px;border-radius:9px;background:radial-gradient(ellipse at 50% 40%,#293738,#1b2729 75%)}#front-views{gap:12px}.choice-grid{grid-template-columns:1fr 1fr;gap:8px}.choice-grid .btn{font-size:11px;padding:20px 5px 12px}.choice-grid .btn small{font-size:9px}.scoreline{font-size:10px;gap:12px}.scoreline b{font-size:13px}.chip{font-size:10px;padding:7px 9px;color:var(--ink)}.chip-row{gap:5px}footer{font-size:9px;margin-top:25px;padding:18px 0 22px;line-height:1.6}#best-score:empty{display:none}.empty-library{font-size:12px;color:var(--ink-dim);padding:15px}
@media(min-width:1550px){.workspace{padding:0 48px}.practice-grid{grid-template-columns:minmax(0,1fr) 345px}#stage-wrap{min-height:530px}}
@media(max-width:1150px){#app{grid-template-columns:205px minmax(0,1fr)}.workspace{padding:0 22px}.practice-grid{grid-template-columns:minmax(0,1fr) 270px;gap:14px}.sidebar{padding:27px 10px 20px}#panel{padding:16px}.stage-badge{display:none}.camera-bar>span{display:none}.camera-bar{justify-content:center}.lesson-symbol{font-size:36px}}
@media(max-width:950px){#app{grid-template-columns:190px minmax(0,1fr)}.practice-grid{grid-template-columns:1fr}#stage-wrap{min-height:450px}#learn-panel{display:grid;grid-template-columns:1.3fr 1fr;gap:22px}.info-card{padding-top:15px}.coach-bottom{margin-top:0;align-self:center}#mode-description{display:none}.local-label{display:none}#panel{min-height:260px}}
@media(max-width:640px){#app{display:block}.sidebar{height:auto;position:relative;padding:18px;border-right:0;border-bottom:1px solid var(--line)}.brand{padding:0 0 15px;justify-content:flex-start}.brand-glyph{font-size:18px}.brand strong{font-size:14px}.brand small{font-size:7px}.sidebar-heading,.sidebar-note,.library-filters,#drill-library,.search{display:none}#drill-select{position:static;clip:auto;width:100%;height:auto;white-space:normal;font-size:12px;padding:10px}.workspace{padding:0 18px}header{height:44px;justify-content:flex-start}main{padding-top:20px;gap:18px}h1{font-size:31px}.lesson-symbol{font-size:30px}.lesson-heading p{font-size:11px}.mode-row{margin-top:3px}#stage-wrap{min-height:400px}.stage-toolbar{left:13px;right:13px;top:13px}.actor-legend{left:15px;gap:10px;font-size:8px;top:57px}.camera-bar{padding:10px}#panel{min-height:0}#learn-panel{display:flex;gap:10px}.coach-bottom{align-self:stretch;padding-top:10px}.info-card{font-size:12px}.info-card h3{font-size:23px}.coach-footnote{margin-top:9px}.detail-toggles{gap:10px}.front-bar{align-items:flex-start}#front-toggle{font-size:18px}.detail-toggles{flex-direction:column;padding-top:6px}#front-views{flex-direction:row;flex-wrap:wrap}#front-views svg{flex-basis:45%;max-height:230px}#front-views #hand-detail{flex-basis:100%;max-height:250px}footer{justify-content:flex-start;text-align:left}.keys{display:none}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

.actor-legend [hidden]{display:none}.library-item small{line-height:1.5}

.drill-notes{margin-top:14px;font-size:11px}.drill-notes summary{cursor:pointer;color:var(--gold)}.drill-notes p{margin-top:10px}.step-list{position:relative}

.lesson-review{margin:0 0 20px;padding:12px 16px;border-left:2px solid #bb995d;background:#ffffff04;color:#acb9b5;font-size:12px;line-height:1.6}.lesson-review strong{color:#d8bf8e;margin-right:14px}.lesson-review details{margin-top:4px}.lesson-review summary{cursor:pointer}.lesson-review p{max-width:850px}.lesson-review a{color:#d8bf8e}.tab:disabled{opacity:.35;cursor:not-allowed}

/* Facing uses a fixed opening direction, independent of the orbit camera. */
#facing-guide{display:flex;align-items:center;gap:14px;padding:10px 16px;border:1px solid var(--line);border-radius:10px;background:#182628}
#facing-guide[hidden]{display:none}
#facing-guide svg{width:96px;height:86px;flex-shrink:0}
#facing-guide svg text{fill:#b0c0bc;font-size:9px;font-family:inherit}
#facing-guide strong{color:var(--gold);font-size:13px}
#facing-guide p{font-size:11px;margin:5px 0;color:var(--ink)}
#facing-guide small{font-size:10px;color:var(--ink-dim);line-height:1.5;display:block}

/* Study controls: keep the demonstration primary, reveal source only on request. */
.timeline-label {display:flex;justify-content:space-between;gap:12px;margin-top:18px;font-size:12px;color:var(--muted,#a9b7b3)}
#motion-timeline {width:100%;accent-color:#dfbc7e;cursor:ew-resize;margin:14px 0}
.study-actions {display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.study-actions .btn {padding:7px 10px;font-size:11px}
.study-actions [aria-pressed="true"] {border-color:#dfbc7e;color:#dfbc7e}
.practice-plan {font-size:12px;line-height:1.65;margin-top:16px}
.practice-plan summary, #step-reference summary {cursor:pointer;color:#dfbc7e}
#practice-clock {display:block;margin-top:8px}
.study-tools {margin:18px 0;padding:16px 20px;border:1px solid #344643;border-radius:12px;background:#1b2929}
.study-options {display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:12px;color:#bccbc5}
.study-options input {accent-color:#dfbc7e}
.study-options span {margin-left:auto;font-size:11px}
#partner-focus {margin-top:14px;line-height:1.65;font-size:13px}
#step-reference {margin-top:14px;font-size:13px;line-height:1.7}
#reference-content a {color:#dfbc7e}
#reference-content p {margin:8px 0}
#reference-viewer {width:100%;height:580px;border:1px solid #52655d;margin-top:14px;background:#eee}
.camera-bar > div {flex-wrap:wrap}
@media(max-width:600px){.study-options span{margin-left:0}#reference-viewer{height:400px}.camera-bar button{padding:5px 7px}}

.teaching-select{display:flex;align-items:center;gap:12px;font-size:13px;color:#dfbc7e}
.teaching-select select{background:#253132;color:#e0e8df;border:1px solid #56615b;border-radius:6px;padding:7px}
.teaching-cue{font-size:13px;line-height:1.65;padding:12px 0;color:#c8d5cc;max-width:850px}
.instructor-notebook{margin-top:16px;font-size:13px;color:#c8d5cc}
.instructor-notebook summary{cursor:pointer;color:#dfbc7e}
.instructor-notebook label,.instructor-notebook small{display:block;margin:10px 0}
#instructor-note{width:100%;padding:12px;border:1px solid #52655d;background:#152323;color:#dce4df;border-radius:6px;resize:vertical;font:inherit}

.reference-shortcuts{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:10px}
.reference-shortcuts a{display:inline-block;padding:5px 0;text-underline-offset:3px}
.reference-shortcuts a:first-child{font-weight:600}

#video-compare{padding:24px;border:1px solid var(--line);border-radius:12px;background:#192426;min-width:0}
#comparison-video{width:100%;aspect-ratio:16/9;border:0;border-radius:8px;background:#0e1517}
#video-compare p{font-size:13px;line-height:1.6;color:var(--ink-dim)}
#video-compare h2{font-size:24px}#video-compare a{color:var(--gold)}
.practice-grid.video-comparing{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.practice-grid.video-comparing #panel{grid-column:1/-1}
.guided-recall #learn-info,.guided-recall #stage-caption,.guided-recall #learn-steps,.guided-recall #front-views,.guided-recall #teaching-cue,.guided-recall #facing-guide,.guided-recall #practice-principles{visibility:hidden}
.guided-recall #stage{opacity:0}
@media(max-width:800px){.practice-grid.video-comparing{grid-template-columns:minmax(0,1fr)}}

/* Source-linked principles share the study panel's readable palette. */
#practice-principles-content p{margin:12px 0;line-height:1.65;color:#d5dfd9}
#practice-principles-content a{display:inline-block;color:#d4bd83;text-underline-offset:3px}
#practice-principles-content a:focus-visible{outline:2px solid #d4bd83;outline-offset:3px}

/* Comparison and portable study tools share the existing training-room scale. */
#comparison-player { min-height: 250px; }
#comparison-player iframe { width:100%; min-height:250px; aspect-ratio:16/9; border:0; border-radius:12px; }
#compare-sync-status { min-height:3em; line-height:1.5; }
#practice-transfer textarea { width:100%; box-sizing:border-box; padding:12px; border:1px solid var(--border, #61716b); border-radius:8px; background:#182726; color:#f5f1e7; font:12px/1.5 ui-monospace,monospace; resize:vertical; }
#practice-transfer .study-actions { flex-wrap:wrap; gap:8px; }
@media (max-width:700px) { #comparison-player iframe { min-height:220px; } }

/* Presentation reset for excerpts whose final stance is not their start. */
#three-stage,#stage{transition:opacity .4s ease}
.repeat-resetting #three-stage,.repeat-resetting #stage{opacity:0}
#repeat-reset-status{position:absolute;top:45%;left:12%;right:12%;z-index:4;color:var(--gold,#edc785);background:#152321e8;border:1px solid #546050;border-radius:8px;text-align:center;padding:12px;font-size:13px;pointer-events:none}
@media(prefers-reduced-motion:reduce){#three-stage,#stage{transition:none}}

#hand-inset-label{position:absolute;top:80px;right:16px;z-index:2;font-size:10px;letter-spacing:.1em;color:#edc785;background:#132127b8;padding:3px 6px;pointer-events:none}

/* Practice polish: clear labels and transport without enlarging the stage. */
.movement-label{color:var(--gold,#edc785);font-size:.9rem;font-weight:600;line-height:1.5;margin:0 0 12px}
.precision-controls{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:8px 0 14px}
.precision-controls small{flex-basis:100%;color:#b7c4be;font-size:.75rem}
.repeat-set{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:12px 0;border-top:1px solid #40514d}
.repeat-set select{max-width:100%;padding:8px;background:#223330;color:#f0e8d8;border:1px solid #607169;border-radius:6px}
.repeat-set output{flex-basis:100%;font-size:.85rem;color:#edc785;font-variant-numeric:tabular-nums}
#camera-save-status{position:absolute;top:88px;left:16px;max-width:65%;font-size:.75rem;color:#edc785;pointer-events:none;z-index:5}
.camera-bar>div{flex-wrap:wrap;justify-content:flex-end}
body[data-label-size="large"] .movement-label,body[data-label-size="large"] #stage-caption span{font-size:1.15rem}
body[data-label-size="largest"] .movement-label,body[data-label-size="largest"] #stage-caption span{font-size:1.4rem}
body[data-label-size="large"] #learn-info h3{font-size:1.4rem}
body[data-label-size="largest"] #learn-info h3{font-size:1.65rem}
.release-notes{max-width:420px;font-size:.8rem;color:#b7c4be}
.release-notes summary{cursor:pointer;color:#edc785}
.release-notes p{margin-top:10px;line-height:1.6}

@media(min-width:951px){.practice-grid{align-items:start}#stage-wrap{height:clamp(474px,65vh,650px);position:sticky;top:12px}}
@media(min-width:641px) and (max-width:950px){#learn-panel>.movement-label{grid-column:1/-1;margin-bottom:0}#learn-panel>.info-card{grid-column:1}#learn-panel>.coach-bottom{grid-column:2;grid-row:2}}
#stage-caption{bottom:100px}
@media(max-width:640px){#camera-save-status{top:79px;font-size:.7rem}#stage-caption{bottom:125px}}

.gate-study{display:grid;grid-template-columns:minmax(180px,260px) minmax(0,1fr);gap:24px;align-items:center;padding:20px;border:1px solid #536551;border-radius:12px;background:#1d2d2b}
.gate-study[hidden]{display:none}.gate-map svg{display:block;max-height:260px;width:100%}.gate-map rect{fill:#6bb6b8;fill-opacity:.10}.gate-map rect.selected{fill:#edc785;fill-opacity:.45}
.gate-explanation h2{margin:0 0 10px}.gate-explanation p{font-size:12px;line-height:1.6;color:#bfccc4}.gate-explanation label{font-size:11px}.gate-examples{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:14px 0 8px}.gate-examples [aria-pressed=true]{border-color:#edc785;background:#37463a;color:#f4dba9}#gate-example-status{color:#edc785;margin:12px 0}.gate-explanation a{color:#e7c184}
@media(max-width:640px){.gate-study{grid-template-columns:1fr;gap:12px}.gate-map svg{max-height:225px}.gate-examples{grid-template-columns:1fr}}

.gate-presentation-reset #three-stage,.gate-presentation-reset #stage{transition:none}

.visual-pilot-controls{border:1px solid #617866;border-radius:12px;background:#20312e;padding:20px;display:flex;flex-wrap:wrap;align-items:center;gap:14px 24px}.visual-pilot-controls[hidden]{display:none}.visual-pilot-controls h2{font-size:20px;margin:6px 0 0}.visual-pilot-controls label{font-size:12px;display:flex;align-items:center;gap:7px}.visual-pilot-controls label[hidden]{display:none}#pilot-appearance-status{width:100%;font-size:12px;color:#cfdbc9}.visual-pilot-controls .coach-footnote{width:100%;margin:0}