:root{--bg:#090713;--panel:#141022;--panel2:#1c1630;--card:#21183a;--card2:#2a1d49;--purple:#9b6cff;--purple2:#6f45db;--lav:#d8c9ff;--text:#f8f5ff;--muted:#aaa0bf;--good:#6ee7b7;--bad:#fb7185;--warn:#fbbf24;--line:#3a2b59;--shadow:0 18px 50px rgba(0,0,0,.35);--glow:#2b1749;--topbar:rgba(9,7,19,.92);--hero1:#21143e;--hero2:#130e25;--deep:#100c1c;--control:#0d0a16;--pill:#171126;--pillSel:#34235a;--question1:#1b1330;--choice:#171126;--choiceSel:#36245e;--badgeBg:#30224f;--flash1:#2b1d4c;--flash2:#171027;--game2:#171026;--memory:#2a1b49;--jeopardy:#291957;--toastBg:#312050}
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html[data-theme="teal"]{--bg:#061615;--panel:#0c2422;--panel2:#113330;--card:#123d38;--card2:#18514a;--purple:#2dd4bf;--purple2:#0f9f92;--lav:#b7f7ef;--muted:#9bc8c3;--line:#24564f;--glow:#0d554d;--topbar:rgba(6,22,21,.92);--hero1:#0e3d39;--hero2:#09231f;--deep:#071b19;--control:#061613;--pill:#0c2724;--pillSel:#13584f;--question1:#0c3934;--choice:#0b2825;--choiceSel:#14665b;--badgeBg:#155047;--flash1:#14574f;--flash2:#0a2d29;--game2:#0b2b27;--memory:#125047;--jeopardy:#0f5c51;--toastBg:#10483f}
html[data-theme="emerald"]{--bg:#07150d;--panel:#102318;--panel2:#173425;--card:#183d2a;--card2:#205238;--purple:#4ade80;--purple2:#16a34a;--lav:#bbf7d0;--muted:#9fc6ac;--line:#2a5b3d;--glow:#14522e;--topbar:rgba(7,21,13,.92);--hero1:#143d25;--hero2:#0b2516;--deep:#091b11;--control:#07150d;--pill:#10261a;--pillSel:#1a5934;--question1:#123821;--choice:#102719;--choiceSel:#1b653b;--badgeBg:#1a5030;--flash1:#1b5a35;--flash2:#0d2d1b;--game2:#0e2c1b;--memory:#184e2f;--jeopardy:#1a5d37;--toastBg:#17482d}
html[data-theme="rose"]{--bg:#17080f;--panel:#28101b;--panel2:#391626;--card:#431a2d;--card2:#5a223d;--purple:#fb7185;--purple2:#e11d48;--lav:#fecdd3;--muted:#caa4ae;--line:#653049;--glow:#641b35;--topbar:rgba(23,8,15,.92);--hero1:#4a1830;--hero2:#280d1a;--deep:#1d0a12;--control:#16080e;--pill:#2b101c;--pillSel:#68213e;--question1:#42172b;--choice:#2b101c;--choiceSel:#7a2547;--badgeBg:#5d213a;--flash1:#681f40;--flash2:#351020;--game2:#331020;--memory:#5f1f3b;--jeopardy:#702246;--toastBg:#592038}
html[data-theme="amber"]{--bg:#171006;--panel:#271d0d;--panel2:#382915;--card:#46331a;--card2:#5c4421;--purple:#fbbf24;--purple2:#d97706;--lav:#fde68a;--muted:#c9b58a;--line:#67522a;--glow:#6b4710;--topbar:rgba(23,16,6,.92);--hero1:#49340f;--hero2:#291b08;--deep:#1d1408;--control:#171006;--pill:#2b1e0b;--pillSel:#6a4a12;--question1:#43300e;--choice:#2c1f0b;--choiceSel:#755516;--badgeBg:#5d4317;--flash1:#674a16;--flash2:#35250b;--game2:#34240a;--memory:#5b4318;--jeopardy:#725115;--toastBg:#584014}

*{box-sizing:border-box}html{background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}body{margin:0;background:radial-gradient(circle at top right,var(--glow) 0,transparent 34rem),var(--bg);min-height:100vh}button,input,select,textarea{font:inherit}button{cursor:pointer}.app{min-height:100vh}.topbar{position:sticky;top:0;z-index:20;background:var(--topbar);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);padding:10px 18px;display:flex;gap:14px;align-items:center}.brand{display:flex;align-items:center;gap:10px;min-width:max-content}.brandmark{width:38px;height:38px;border-radius:12px;background:linear-gradient(145deg,var(--purple),#4f2a9f);display:grid;place-items:center;font-weight:900;box-shadow:0 8px 24px rgba(155,108,255,.3)}.brand h1{font-size:17px;margin:0}.brand p{font-size:11px;margin:2px 0 0;color:var(--muted)}.nav{display:flex;gap:5px;overflow-x:auto;scrollbar-width:none;flex:1}.nav::-webkit-scrollbar{display:none}.nav button{white-space:nowrap;border:1px solid transparent;background:transparent;color:var(--muted);padding:9px 10px;border-radius:10px;font-weight:750;font-size:12px}.nav button.active,.nav button:hover{background:var(--card);color:#fff;border-color:var(--line)}.net{font-size:11px;padding:6px 9px;border-radius:999px;background:#113525;color:var(--good);white-space:nowrap}.net.off{background:#3d201f;color:#fecaca}.main{max-width:1400px;margin:auto;padding:22px}.page{display:none}.page.active{display:block}.hero{background:linear-gradient(145deg,var(--hero1),var(--hero2));border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--shadow);display:grid;grid-template-columns:1.4fr .6fr;gap:24px}.eyebrow{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--lav);font-weight:800}.hero h2{font-size:clamp(28px,5vw,52px);line-height:1.02;margin:8px 0 12px}.hero p{max-width:760px;color:var(--muted);line-height:1.55}.focus{background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:20px;padding:18px}.focus h3{margin-top:0}.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:18px 0}.kpi{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:15px}.kpi b{font-size:25px;display:block}.kpi span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.card{background:linear-gradient(150deg,var(--panel),var(--deep));border:1px solid var(--line);border-radius:18px;padding:18px}.card h3,.card h2{margin-top:0}.card p{color:var(--muted);line-height:1.45}.mode-card{min-height:180px;display:flex;flex-direction:column;justify-content:space-between}.icon{font-size:26px}.btn{border:0;background:linear-gradient(145deg,var(--purple),var(--purple2));color:#fff;font-weight:800;padding:11px 14px;border-radius:12px;box-shadow:0 8px 18px rgba(111,69,219,.2)}.btn:hover{filter:brightness(1.07)}.btn.secondary{background:#2a2141;color:#fff;border:1px solid var(--line);box-shadow:none}.btn.ghost{background:transparent;border:1px solid var(--line);box-shadow:none;color:var(--lav)}.btn.good{background:#167453}.btn.bad{background:#a82d43}.btn.small{padding:7px 9px;font-size:12px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;margin:5px 0 16px}.section-head h2{margin:0;font-size:28px}.section-head p{margin:4px 0 0;color:var(--muted)}.panel{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:20px;margin-bottom:16px}.field label{display:block;font-size:11px;color:var(--muted);font-weight:850;text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px}.field select,.field input,.field textarea,.search{width:100%;background:var(--control);color:#fff;border:1px solid var(--line);border-radius:11px;padding:11px;outline:none}.field input:focus,.field textarea:focus,.search:focus{border-color:var(--purple)}.setup-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.chapter-groups{display:grid;gap:14px}.chapter-group{border-top:1px solid var(--line);padding-top:12px}.chapter-group:first-child{border-top:0}.chapter-group h4{margin:0 0 8px;color:var(--lav)}.chapter-pills{display:flex;flex-wrap:wrap;gap:7px}.chapter-pill input{display:none}.chapter-pill label{display:flex;gap:7px;align-items:center;padding:8px 10px;border-radius:999px;background:var(--pill);border:1px solid var(--line);color:var(--muted);font-size:12px;cursor:pointer}.chapter-pill input:checked+label{background:var(--pillSel);border-color:var(--purple);color:#fff}.checks{display:flex;gap:8px;flex-wrap:wrap}.check{display:flex;align-items:center;gap:6px;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--deep);font-size:12px}.check input{accent-color:var(--purple)}.question{background:linear-gradient(150deg,var(--question1),var(--deep));border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow)}.qmeta{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:14px}.badge{display:inline-flex;padding:5px 8px;border-radius:999px;background:var(--badgeBg);color:var(--lav);font-size:10px;font-weight:800}.prompt{font-size:20px;line-height:1.45;margin:8px 0 16px}.answers{display:grid;gap:9px}.answer{background:var(--pill);color:#fff;border:1px solid var(--line);padding:12px;border-radius:12px;text-align:left}.answer:hover{border-color:var(--purple)}.answer.selected{background:var(--choiceSel);border-color:var(--purple)}.answer.correct{background:#123d31;border-color:#318c6f}.answer.wrong{background:#4a1825;border-color:#b6405a}.feedback{margin-top:14px;border-radius:12px;padding:14px;background:#0f0b1b;border:1px solid var(--line);line-height:1.5}.feedback.good{border-color:#2e8b6d}.feedback.bad{border-color:#b6405a}.progressbar{height:8px;background:#1b1528;border-radius:999px;overflow:hidden;flex:1}.progressbar>i{display:block;height:100%;background:linear-gradient(90deg,var(--purple),#c084fc)}.med-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.med{border:1px solid var(--line);background:#120e20;border-radius:14px;padding:14px}.med h4{margin:0 0 4px}.med small{color:var(--muted)}.med details{margin-top:8px}.med details p{font-size:12px}.flashcard{min-height:300px;perspective:1000px;cursor:pointer}.flash-inner{position:relative;width:100%;height:300px;transition:transform .45s;transform-style:preserve-3d}.flashcard.flipped .flash-inner{transform:rotateY(180deg)}.flash-face{position:absolute;inset:0;backface-visibility:hidden;border:1px solid var(--line);border-radius:22px;background:linear-gradient(145deg,var(--flash1),var(--flash2));display:grid;place-items:center;text-align:center;padding:30px}.flash-back{transform:rotateY(180deg);background:linear-gradient(145deg,#172a25,#101a17)}.flash-face h2{font-size:32px}.game-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.game-card{background:linear-gradient(145deg,var(--panel),var(--game2));border:1px solid var(--line);border-radius:16px;padding:15px;min-height:160px;display:flex;flex-direction:column;justify-content:space-between}.game-card h3{font-size:15px;margin:8px 0}.game-card p{font-size:12px;margin:0 0 12px;color:var(--muted)}.game-area{min-height:360px}.sortable{display:grid;gap:8px}.sort-row{display:flex;gap:8px;align-items:center;padding:10px;background:#161023;border:1px solid var(--line);border-radius:10px}.sort-row span{flex:1}.memory-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.memory-card{height:95px;border:1px solid var(--line);background:var(--memory);color:transparent;border-radius:12px;padding:8px}.memory-card.open,.memory-card.matched{color:#fff;background:#152a24}.jeopardy{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}.jeopardy button{min-height:70px;background:var(--jeopardy);border:1px solid #5a3c99;color:#f6da72;font-weight:900;border-radius:9px}.protocol-frame{width:100%;height:76vh;border:1px solid var(--line);border-radius:14px;background:#fff}.protocol-warning{padding:12px;border:1px solid #725714;background:#382d0f;color:#fde68a;border-radius:12px;margin-bottom:12px}.stat-table{width:100%;border-collapse:collapse}.stat-table th,.stat-table td{padding:9px;border-bottom:1px solid var(--line);text-align:left;font-size:12px}.stat-table th{color:var(--muted)}.empty{padding:28px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:14px}.toast{position:fixed;right:20px;bottom:20px;background:var(--toastBg);border:1px solid var(--purple);padding:11px 14px;border-radius:12px;opacity:0;transform:translateY(10px);transition:.2s;z-index:50}.toast.show{opacity:1;transform:none}.hidden{display:none!important}.footer{color:var(--muted);font-size:11px;line-height:1.5;padding:25px 0 10px}
@media(max-width:1050px){.hero{grid-template-columns:1fr}.grid,.med-list{grid-template-columns:repeat(2,1fr)}.game-grid{grid-template-columns:repeat(3,1fr)}.setup-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.topbar{align-items:flex-start;flex-wrap:wrap}.brand{width:100%}.nav{order:3;width:100%}.main{padding:14px}.hero{padding:20px}.kpis{grid-template-columns:repeat(2,1fr)}.grid,.grid2,.med-list{grid-template-columns:1fr}.game-grid{grid-template-columns:repeat(2,1fr)}.setup-grid{grid-template-columns:1fr}.prompt{font-size:18px}.memory-grid{grid-template-columns:repeat(3,1fr)}.jeopardy{grid-template-columns:repeat(2,1fr)}.protocol-frame{height:70vh}}
@media(max-width:430px){.game-grid{grid-template-columns:1fr}.memory-grid{grid-template-columns:repeat(2,1fr)}}

.install-app{white-space:nowrap}.install-app.hidden{display:none!important}@media(max-width:720px){.install-app{order:2;margin-left:auto}}

.multi-hint{display:flex;justify-content:space-between;gap:10px;align-items:center;margin:0 0 10px;padding:9px 11px;border:1px solid var(--line);border-radius:10px;background:#110c1e;color:var(--muted);font-size:12px}.multi-hint b{color:var(--lav)}


/* 2.0.4 — Samsung-friendly dark pickers and long-answer containment */
select{max-width:100%;min-width:0;color-scheme:dark;background-color:#0d0a16!important;color:#fff!important;border:1px solid var(--line);border-radius:11px;padding:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
select option{background:#151022;color:#fff}
.match-list{display:grid;gap:12px;width:100%;min-width:0}
.match-row{display:grid;grid-template-columns:minmax(140px,.65fr) minmax(0,1.35fr);gap:12px;align-items:center;width:100%;min-width:0;padding:10px;background:#120e20;border:1px solid var(--line);border-radius:13px;margin:8px 0}
.match-label{min-width:0;line-height:1.35;overflow-wrap:anywhere}
.sr-picker{position:relative;min-width:0;width:100%}
.picker-toggle{width:100%;min-width:0;display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--pill);color:#fff;border:1px solid var(--line);border-radius:11px;padding:11px 12px;text-align:left;box-shadow:none}
.picker-toggle:hover,.sr-picker.open .picker-toggle{border-color:var(--purple);background:#21163a}
.picker-text{display:block;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--lav)}
.picker-arrow{flex:0 0 auto;color:var(--purple)}
.picker-menu{display:none;position:absolute;z-index:80;left:0;right:0;top:calc(100% + 6px);max-height:min(42vh,330px);overflow:auto;background:var(--deep);border:1px solid var(--purple);border-radius:13px;padding:6px;box-shadow:0 18px 50px rgba(0,0,0,.55)}
.sr-picker.open .picker-menu{display:grid;gap:5px}
.picker-option{display:block;width:100%;background:var(--pill);color:#fff;border:1px solid transparent;border-radius:9px;padding:10px;text-align:left;white-space:normal;overflow-wrap:anywhere;line-height:1.35;box-shadow:none}
.picker-option:hover,.picker-option:focus{background:#322052;border-color:var(--purple);outline:none}
.question,.card,.panel,.game-area{min-width:0;overflow:visible}
.answer{overflow-wrap:anywhere;word-break:normal}
@media(max-width:720px){.match-row{grid-template-columns:1fr;gap:8px}.picker-menu{position:fixed;left:14px;right:14px;top:auto;bottom:18px;max-height:55vh}.picker-toggle{padding:12px}.picker-option{padding:12px}.sr-picker.open:before{content:"";position:fixed;inset:0;background:rgba(4,3,10,.62);z-index:70}.sr-picker.open .picker-menu{z-index:81}}

/* 2.0.5 — visible in-app install affordance */
.install-btn{background:linear-gradient(145deg,#16a36f,#0b7d86);box-shadow:0 8px 20px rgba(16,163,111,.22);white-space:nowrap}.install-btn:hover{filter:brightness(1.08)}.install-note{font-size:12px!important;color:var(--lav)!important;margin:10px 0 0!important}.install-btn.hidden{display:none!important}
@media(max-width:720px){.install-btn{width:100%;justify-content:center}.install-note{width:100%}}

/* 2.0.6 — expanded flashcards + offline protocol fallback */
.small-note{color:var(--muted);font-size:12px;line-height:1.45}.protocol-offline{background:linear-gradient(145deg,#171027,#100c1c)}.protocol-offline h3{margin-top:0}.flash-face{overflow:auto}.flash-face>div{max-width:100%;max-height:100%;overflow:auto}.flash-face h2{font-size:clamp(21px,4vw,32px);line-height:1.25}.flash-back p{max-width:920px;margin:12px auto 0;line-height:1.55}.flashcard{min-height:340px}.flash-inner{height:340px}@media(max-width:720px){.flashcard{min-height:390px}.flash-inner{height:390px}.flash-face{padding:22px 18px}.flash-back p{font-size:15px!important}}

/* 2.1.0 — deep coverage, rationale, and tablet polish */
.coverage-note{margin-top:12px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--deep);color:var(--muted);font-size:12px;line-height:1.45}.coverage-note b{color:var(--lav)}
.danger-soft{background:#3d1c2b!important;color:#fecdd3!important;border:1px solid #7f3049!important;box-shadow:none!important}
.flash-actions{gap:8px}.flash-actions .btn{min-width:92px}
.why-details{margin-top:12px;border-top:1px solid var(--line);padding-top:10px}.why-details summary{cursor:pointer;color:var(--lav);font-weight:800}.why-row{display:grid;grid-template-columns:minmax(130px,.4fr) minmax(0,1fr);gap:10px;margin-top:8px;padding:8px 10px;border-radius:10px;background:var(--deep)}.why-row b{overflow-wrap:anywhere}.why-row span{color:var(--muted);font-size:12px;line-height:1.45}
.chapter-pill label{max-width:min(100%,360px)}
@media(max-width:720px){.flash-actions{display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr));width:100%}.flash-actions .btn{width:100%;min-width:0}.why-row{grid-template-columns:1fr}.topbar{padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right))}.main{padding-left:max(14px,env(safe-area-inset-left));padding-right:max(14px,env(safe-area-inset-right))}}

.appearance-panel{margin:18px 0}.theme-field{min-width:220px;max-width:320px;flex:0 1 320px}.appearance-panel p{color:var(--muted)}
@media(max-width:720px){.appearance-panel>.row{align-items:stretch}.theme-field{min-width:100%;max-width:none}}

/* 2.1.2 — platform-aware installation */
.install-btn.apple-install{background:linear-gradient(145deg,var(--purple),var(--purple2));color:#fff}
.install-btn.android-install{background:linear-gradient(145deg,#16a36f,#0b7d86)}
.install-modal{position:fixed;inset:0;z-index:2500;display:flex;align-items:center;justify-content:center;padding:20px}
.install-modal.hidden{display:none!important}
.install-modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.72);backdrop-filter:blur(7px)}
.install-modal-card{position:relative;width:min(520px,100%);max-height:min(720px,calc(100dvh - 32px));overflow:auto;background:linear-gradient(165deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:0 28px 80px rgba(0,0,0,.55)}
.install-modal-card h2{margin:5px 0 8px;font-size:clamp(25px,5vw,34px)}
.install-modal-intro{color:var(--muted);line-height:1.5;margin:0 0 20px}
.install-modal-icon{width:62px;height:62px;border-radius:18px;display:grid;place-items:center;font-weight:900;font-size:22px;margin-bottom:15px;background:linear-gradient(145deg,var(--purple),var(--purple2));box-shadow:0 12px 28px rgba(0,0,0,.25)}
.install-modal-close{position:absolute;right:15px;top:12px;width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:var(--control);color:var(--lav);font-size:28px;line-height:1;cursor:pointer}
.install-steps{display:grid;gap:12px;margin:18px 0}
.install-step{display:grid;grid-template-columns:42px 1fr;gap:12px;align-items:start;padding:14px;border-radius:16px;background:var(--choice);border:1px solid var(--line)}
.install-step>span{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:var(--pillSel);color:var(--lav);font-weight:900}
.install-step strong{display:block;margin:1px 0 4px}
.install-step p{margin:0;color:var(--muted);line-height:1.45;font-size:14px}
.ios-safari-note{margin:15px 0;padding:12px 14px;border-radius:14px;background:var(--badgeBg);border:1px solid var(--line);color:var(--lav);font-size:13px;line-height:1.45}
body.modal-open{overflow:hidden}
@media(max-width:520px){
  .install-modal{padding:10px}
  .install-modal-card{padding:22px 18px 18px;border-radius:20px}
  .install-step{grid-template-columns:36px 1fr;padding:12px}
  .install-step>span{width:34px;height:34px}
}

.match-review-list{display:grid;gap:9px;margin-top:12px}.match-review-list h4{margin:0 0 2px}.match-review{border:1px solid var(--line);border-left-width:4px;border-radius:11px;padding:10px;background:var(--deep);display:grid;gap:7px}.match-review-good{border-left-color:#2e8b6d}.match-review-bad{border-left-color:#b6405a}.match-review-head{display:flex;justify-content:space-between;gap:10px}.match-review-good .match-review-head span{color:var(--good)}.match-review-bad .match-review-head span{color:#fda4af}.match-review small{display:block;color:var(--muted);font-weight:800;text-transform:uppercase;letter-spacing:.05em;font-size:9px;margin-bottom:2px}

/* 2.4.0 — responsive ECG rhythm-strip game */
.rhythm-strip{margin:16px 0 18px;padding:10px;border:1px solid #31506f;border-radius:14px;background:#07120d;box-shadow:inset 0 0 24px rgba(0,0,0,.42);overflow:hidden}
.rhythm-strip svg{display:block;width:100%;height:clamp(160px,24vw,235px);background:#07120d;border-radius:8px}
.rhythm-strip small{display:block;margin:8px 4px 1px;color:#8fc7a7;font-size:12px;line-height:1.35}
.ecg-minor{stroke:#143927;stroke-width:.45}.ecg-major{stroke:#22563a;stroke-width:.9}.ecg-wave{fill:none;stroke:#75f0a7;stroke-width:2.5;stroke-linejoin:round;stroke-linecap:round;vector-effect:non-scaling-stroke;filter:drop-shadow(0 0 2px rgba(117,240,167,.5))}.ecg-spikes{stroke:#b2ffca;stroke-width:2}
@media(max-width:600px){.rhythm-strip{padding:7px}.rhythm-strip svg{height:175px}.rhythm-strip small{font-size:11px}}

/* 2.5.0 — expanded rhythm challenge */
.rhythm-intro{margin-bottom:18px}.rhythm-intro h3{margin:10px 0 6px;font-size:25px}.rhythm-intro p{margin:0;color:var(--muted);line-height:1.5}
.rhythm-setup{grid-template-columns:repeat(3,minmax(0,1fr)) auto;align-items:end}.rhythm-start .btn{width:100%;white-space:nowrap}
.rhythm-mode-guide{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0}.rhythm-mode-guide>div{padding:13px;border-radius:13px;background:var(--deep);border:1px solid var(--line)}.rhythm-mode-guide b,.rhythm-mode-guide span{display:block}.rhythm-mode-guide span{margin-top:4px;color:var(--muted);font-size:12px;line-height:1.4}
.rhythm-analysis{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:14px}.rhythm-scenario{margin:14px 0;padding:16px;border-radius:14px;background:linear-gradient(145deg,var(--question1),var(--deep));border:1px solid var(--line)}.rhythm-scenario p{margin:7px 0 0;line-height:1.55;color:var(--text)}
.rhythm-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;margin:10px 0}.rhythm-facts span{padding:8px 10px;border-radius:9px;background:var(--deep);font-size:12px}.rhythm-score b{font-size:30px;color:var(--lav)}
.rhythm-refs{margin-top:16px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--deep);color:var(--muted);font-size:12px;line-height:1.5}.rhythm-refs summary{cursor:pointer;color:var(--lav);font-weight:800}.rhythm-refs a{color:#c4b5fd}
@media(max-width:850px){.rhythm-setup{grid-template-columns:repeat(2,minmax(0,1fr))}.rhythm-mode-guide{grid-template-columns:1fr}}
@media(max-width:600px){.rhythm-setup,.rhythm-analysis,.rhythm-facts{grid-template-columns:1fr}.rhythm-intro h3{font-size:22px}}

/* 2.7.0 — integrated Protocol Lab mastery and workspace */
.protocol-warning a{color:var(--lav);font-weight:800}.protocol-command{display:grid;gap:12px;margin:14px 0}.protocol-command>.row{gap:8px}.protocol-summary{min-height:38px}
.protocol-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.protocol-kpis>div{display:grid;gap:2px;padding:11px 12px;border:1px solid var(--line);border-radius:12px;background:var(--deep)}.protocol-kpis b{font-size:20px;color:var(--lav)}.protocol-kpis span{color:var(--muted);font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.04em}
.protocol-progress-panel{margin:14px 0}.protocol-progress-panel .stat-table{margin-top:14px}.protocol-frame{min-height:760px}
@media(max-width:720px){.protocol-command>.row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));width:100%}.protocol-command .btn{width:100%;min-height:46px}.protocol-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}.protocol-progress-panel>.row{align-items:stretch}.protocol-progress-panel .btn{width:100%}.protocol-frame{min-height:calc(100dvh - 210px)}}

/* Protocol workspace owns its modes and compact progress. */
#page-protocols .protocol-command{display:none}#page-protocols .protocol-warning{margin:0 0 16px;font-size:14px}#page-protocols .protocol-warning summary{cursor:pointer;font-weight:700}#protocolFrame{display:block;width:100%;height:1100px;min-height:650px;border:0;border-radius:0;background:transparent}#page-protocols .section-head{margin-bottom:12px}

#netStatus{white-space:normal;max-width:240px;line-height:1.4} #retryOffline{font-size:12px;white-space:normal;max-width:200px}