@font-face{font-family:Vazirmatn;src:url(/fonts/vazirmatn-regular.ttf) format("truetype");font-style:normal;font-weight:400;font-display:swap}@font-face{font-family:Vazirmatn;src:url(/fonts/vazirmatn-semibold.ttf) format("truetype");font-style:normal;font-weight:600;font-display:swap}@font-face{font-family:Vazirmatn;src:url(/fonts/vazirmatn-bold.ttf) format("truetype");font-style:normal;font-weight:700 800;font-display:swap}@font-face{font-family:Vazirmatn;src:url(/fonts/vazirmatn-black.ttf) format("truetype");font-style:normal;font-weight:900;font-display:swap}:root{font-family:Vazirmatn,Segoe UI,Tahoma,sans-serif;color:#62736f;background:#e3e9e6;font-synthesis:none;text-rendering:optimizeLegibility;--ink: #62736f;--sage: #9fad9f;--sand: #d9d0c7;--blush: #e8b5a7;--coral: #db846e;--background: #f7f4f1;--white: #fff;--danger: #a34343;--app-height: 100dvh;--nav-height: 86px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{margin:0;min-height:100%}body{overscroll-behavior:none}button,input,textarea{font:inherit}button{color:inherit;border:0;cursor:pointer}button:disabled{cursor:default;opacity:.52}p,h1,h2,h3{margin:0}[dir=rtl],[lang=fa]{font-family:Vazirmatn,Tahoma,sans-serif}[dir=auto],.bidi-copy{unicode-bidi:plaintext;text-align:start}.app-shell,.auth-screen,.splash{width:min(100%,520px);height:var(--app-height);min-height:560px;margin:0 auto;background:var(--background);position:relative;overflow:hidden;box-shadow:0 0 40px #41544f26}.screen-host{height:100%;overflow:hidden}.scroll-screen{height:100%;overflow-y:auto;overscroll-behavior-y:contain;padding:max(18px,env(safe-area-inset-top)) 20px 32px;scrollbar-width:none}.scroll-screen::-webkit-scrollbar,.messages::-webkit-scrollbar,.path-carousel::-webkit-scrollbar{display:none}.eyebrow{font-size:11px;font-weight:800;letter-spacing:1.15px}.coral,.coral-label{color:var(--coral)}.primary-button{width:100%;min-height:54px;border-radius:17px;background:var(--coral);color:#fff;font-weight:800;display:grid;place-items:center;padding:12px 18px}.button-spinner,.loader{width:20px;height:20px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .75s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.auth-screen{display:flex;flex-direction:column;justify-content:center;padding:max(14px,env(safe-area-inset-top)) 18px max(12px,env(safe-area-inset-bottom));overflow-y:auto}.auth-shell{width:100%;max-width:440px;margin:auto;overflow:hidden;border-radius:36px;background:#26332f;box-shadow:0 24px 52px #30413c3d;transition:min-height .3s ease}.auth-hero{min-height:292px;position:relative;overflow:hidden;padding:18px 24px;color:#fff;background:radial-gradient(circle at 48% 22%,rgba(159,173,159,.2),transparent 37%),linear-gradient(145deg,#1e2926,#2d3c37)}.auth-hero:before,.auth-hero:after{content:"";position:absolute;border-radius:50%;filter:blur(.2px)}.auth-hero:before{width:16px;height:16px;left:-6px;top:78px;background:var(--blush);box-shadow:392px 42px #d7e9e6,36px 102px 0 -4px var(--sand)}.auth-hero:after{width:7px;height:7px;right:25px;top:92px;background:var(--coral);box-shadow:-246px 34px #fff}.auth-brand{position:relative;z-index:2;width:max-content;height:36px;padding:0 12px;border-radius:14px;background:#ffffff17;display:flex;align-items:center;gap:8px;color:var(--blush);font-size:11px;font-weight:900;letter-spacing:1.2px}.auth-brand svg{width:18px}.auth-status{position:absolute;z-index:2;right:25px;top:29px;width:9px;height:9px;border-radius:50%;background:var(--coral);box-shadow:0 0 0 5px #db846e1a}.auth-orbit{position:absolute;inset:47px 24px auto;height:142px}.orbit-node{position:absolute;z-index:2;border-radius:50%;display:grid;place-content:center;justify-items:center;color:#26332f;box-shadow:0 8px 22px #0003;transition:transform .35s cubic-bezier(.2,.8,.2,1)}.orbit-node svg{width:23px;height:23px}.orbit-node b{margin-top:2px;font-size:10px}.node-ecg{width:72px;height:72px;left:12%;top:16px;background:var(--blush);animation:auth-float 4.8s ease-in-out infinite}.node-leads{width:62px;height:62px;right:12%;top:8px;background:#d7e9e6;animation:auth-float 5.2s .7s ease-in-out infinite}.node-ai{width:65px;height:65px;left:calc(50% - 32px);top:63px;background:#dde7d8;animation:auth-float 4.5s 1.1s ease-in-out infinite}@keyframes auth-float{0%,to{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-7px) rotate(2deg)}}.auth-ecg{position:absolute;left:0;right:0;bottom:5px;width:100%;height:42px;opacity:.68}.auth-ecg path{fill:none;stroke:var(--blush);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:500;animation:ecg-draw 2.6s ease-out both}@keyframes ecg-draw{0%{stroke-dashoffset:500}to{stroke-dashoffset:0}}.auth-heading{position:absolute;z-index:3;left:20px;right:20px;bottom:19px;text-align:center}.auth-heading h1{color:#fff;font-size:clamp(25px,7.8vw,31px);line-height:1.02;letter-spacing:-1px;font-weight:900}.auth-heading p{margin-top:7px;color:#ffffff9e;font-size:12px}.auth-card{padding:19px 22px 20px;background:#fff;border-radius:34px 34px 36px 36px;display:flex;flex-direction:column;transition:padding .3s ease}.auth-question{text-align:center;color:#62736f9e;font-size:12px}.auth-switch{margin:1px auto 8px;padding:5px 9px;background:transparent;color:var(--coral);font-weight:850;font-size:14px}.auth-fields{display:grid;gap:10px}.auth-field{min-height:55px;padding:5px 7px;border:1.5px solid transparent;border-radius:17px;background:#f1f2f0;display:flex;align-items:center;transition:border-color .2s,box-shadow .2s}.auth-field:focus-within{border-color:var(--sage);box-shadow:0 0 0 4px #9fad9f21}.auth-field>span{width:39px;height:39px;flex:0 0 auto;border-radius:12px;background:#fff;color:var(--coral);display:grid;place-items:center}.auth-field>span svg{width:20px}.auth-field input{min-width:0;flex:1;height:44px;border:0;outline:0;padding:0 10px;background:transparent;color:var(--ink);font-size:16px}.auth-field input::placeholder{color:#62736f7a;font-size:14px}.auth-field>button{width:40px;height:40px;flex:0 0 auto;border-radius:12px;background:transparent;display:grid;place-items:center}.auth-field>button svg{width:19px}.form-error{color:var(--danger);font-size:12px;margin:9px 3px 0;line-height:1.35}.auth-submit{width:100%;min-height:54px;margin-top:12px;border-radius:17px;background:var(--coral);box-shadow:0 8px 16px #db846e38}.auth-submit:disabled{background:var(--sand)}.device-trust{margin-top:11px;display:flex;align-items:center;justify-content:center;gap:6px;color:#62736f8c;font-size:11px}.device-trust svg{width:15px;height:15px;color:var(--sage)}.clinical-note{text-align:center;margin:13px auto 0;max-width:360px;color:#62736f94;font-size:11px;line-height:1.4}@media(max-height:720px){.auth-screen{justify-content:flex-start}.auth-hero{min-height:245px}.auth-orbit{transform:scale(.82);transform-origin:top center;top:41px}.auth-heading h1{font-size:24px}.auth-card{padding-block:15px}.clinical-note{margin-top:8px}}.splash{display:grid;place-content:center;justify-items:center;gap:12px}.splash .brand-pulse{width:72px;height:72px;border-radius:23px;background:var(--ink);color:var(--blush);display:grid;place-items:center}.splash h1{font-size:23px}.splash .loader{border-color:#62736f33;border-top-color:var(--coral);margin-top:12px}.learn-screen{padding-left:0;padding-right:0}.learner-header{display:flex;align-items:center;padding:0 20px}.avatar{width:48px;height:48px;flex:0 0 auto;border-radius:50%;background:linear-gradient(140deg,var(--blush),var(--coral));color:#fff;font-weight:850;box-shadow:0 4px 13px #db846e3d}.learner-header>span{min-width:0;flex:1;display:flex;flex-direction:column;padding:0 11px}.learner-header strong{color:var(--ink);font-size:19px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.learner-header small{color:#62736f9e;font-size:11px;margin-top:1px}.compact-streak{width:0;max-width:0;height:44px;padding:0;opacity:0;overflow:hidden;pointer-events:none;transform:translateY(18px) scale(.72);transform-origin:right center;background:var(--ink);color:#fff;border-radius:18px;display:flex;align-items:center;justify-content:center;gap:7px;box-shadow:0 4px 11px #3a48452e;transition:width .48s cubic-bezier(.23,1,.32,1),max-width .48s cubic-bezier(.23,1,.32,1),padding .48s cubic-bezier(.23,1,.32,1),opacity .22s ease-out,transform .48s cubic-bezier(.23,1,.32,1)}.compact-streak.visible{width:auto;max-width:112px;padding:0 12px;opacity:1;pointer-events:auto;transform:translateY(0) scale(1);transition-delay:.22s}.compact-streak .flame-icon{width:19px;height:19px;flex:0 0 auto}.compact-streak strong{color:#fff;font-size:14px;font-weight:900}.compact-streak small{color:#ffffffc2;font-size:10px;font-weight:800;margin:0}.streak-reveal{max-height:180px;overflow:visible;transition:max-height .58s cubic-bezier(.23,1,.32,1)}.streak-reveal>div{transform-origin:calc(100% - 40px) -58px;transition:transform .58s cubic-bezier(.23,1,.32,1),opacity .28s ease-out;will-change:transform,opacity}.streak-reveal.expanded{max-height:180px}.streak-reveal.expanded>div{opacity:1;transform:translateY(0) scale(1)}.streak-reveal.collapsed{max-height:0;pointer-events:none}.streak-reveal.collapsed>div{opacity:0;transform:translateY(-132px) scale(.28)}.streak-card{margin:0 20px;min-height:142px;display:flex;align-items:center;padding:15px;border-radius:25px;background:linear-gradient(130deg,rgba(159,173,159,.94),var(--sand) 52%,rgba(232,181,167,.94));box-shadow:0 6px 15px #62736f24;overflow:hidden}.streak-copy{min-width:0;flex:1}.streak-copy .eyebrow{color:#455450bd}.streak-copy h2{color:var(--ink);font-size:34px;line-height:1;margin-top:4px;letter-spacing:-1px}.streak-copy h2 span{font-size:15px;letter-spacing:0}.streak-copy>p{color:#4b5956c9;font-size:11px;margin-top:4px;line-height:1.3}.streak-copy small{display:block;margin-top:6px;color:#455450ad;font-weight:750;font-size:10px}.streak-copy small b{font-size:9px;letter-spacing:.7px;margin-left:3px;opacity:.8}.streak-segments{display:grid;gap:clamp(2px,1.8vw,7px);margin-top:5px}.streak-segments i{height:6px;border-radius:99px;background:#ffffff91;transition:background .35s,transform .35s}.streak-segments i.filled{background:var(--coral);transform:scaleY(1.05)}.flame{width:60px;height:60px;margin-left:11px;flex:0 0 auto;display:grid;place-items:center;border-radius:20px;background:#ffffff7a;color:var(--coral)}.flame-icon{width:34px;height:34px;fill:currentColor}.continue-card{width:calc(100% - 40px);margin:18px 20px 0;min-height:85px;padding:16px;background:var(--ink);color:#fff;border-radius:24px;display:flex;align-items:center;text-align:left;box-shadow:0 6px 15px #3948442e}.continue-card>i{width:51px;height:51px;flex:0 0 auto;border-radius:16px;background:var(--blush);color:var(--ink);display:grid;place-items:center}.continue-card>span{min-width:0;flex:1;display:flex;flex-direction:column;padding:0 13px}.continue-card small{color:var(--blush);font-size:10px;font-weight:850;letter-spacing:1px}.continue-card strong{white-space:nowrap;text-overflow:ellipsis;overflow:hidden;margin-top:3px}.continue-card em{color:#ffffffad;font-size:12px;font-style:normal;margin-top:2px}.section-heading{padding:0 20px}.section-heading h2{font-size:20px;color:var(--ink);letter-spacing:-.2px}.section-heading p{font-size:12px;color:#62736fa3;margin-top:2px}.learn-screen>.section-heading{margin-top:21px}.path-carousel{display:flex;gap:12px;width:100%;overflow-x:auto;scroll-snap-type:x mandatory;padding:13px calc(50% - 74px) 21px}.path-card{width:148px;height:190px;position:relative;flex:0 0 148px;padding:14px;border-radius:24px;overflow:hidden;color:#fff;text-align:left;scroll-snap-align:center;display:flex;flex-direction:column;justify-content:space-between;transform:translateY(12px) scale(.9) rotate(-1.5deg);opacity:.73;transition:transform .34s cubic-bezier(.22,.8,.24,1),opacity .3s,box-shadow .3s}.path-card.selected{transform:translateY(0) scale(1);opacity:1;box-shadow:0 11px 23px #4b595638,0 0 0 2px var(--coral)}.path-card img,.path-shade{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.path-shade{background:linear-gradient(rgba(0,0,0,.08),transparent 38%,rgba(55,70,66,.9))}.gradient-0{background:linear-gradient(135deg,var(--sage),var(--sand))}.gradient-1{background:linear-gradient(135deg,var(--blush),var(--sand))}.gradient-2{background:linear-gradient(135deg,#84a49b,var(--blush))}.gradient-3{background:linear-gradient(135deg,var(--sand),#e6b8c4)}.gradient-4{background:linear-gradient(135deg,#afc8c2,#e8c5a7)}.path-card>strong,.path-card>h3,.path-signal{position:relative;z-index:1}.path-card>strong{font-size:14px}.path-card>h3{font-size:16px;line-height:1.13;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.path-signal{display:flex;align-items:center}.ecg-wave{width:100%;flex:1;height:35px;margin-right:0;overflow:visible}.ecg-wave path{fill:none;stroke:#fff;stroke-width:2.7;stroke-linecap:round;stroke-linejoin:round}.path-signal span{width:29px;height:29px;border-radius:50%;background:#fff;color:var(--ink);display:grid;place-items:center}.lesson-heading{padding:0 20px}.search-field{min-height:53px;padding:0 14px;margin-top:11px;border-radius:20px;background:#fff;display:flex;align-items:center;box-shadow:0 4px 13px #4e5c580f}.search-field>svg{width:21px}.search-field input{min-width:0;flex:1;border:0;outline:0;padding:0 10px;color:var(--ink);background:transparent;font-size:16px}.search-field button{padding:5px;background:transparent}.search-field button svg{width:19px}.lesson-list{display:grid;gap:22px;margin-top:14px}.lesson-list.single-path{gap:12px;padding:0 20px}.lesson-group>header{min-height:46px;padding:0 20px 8px;display:flex;justify-content:flex-end;align-items:center;gap:10px;text-align:right}.lesson-group>header>span{min-width:0;max-width:280px;display:flex;flex-direction:column;align-items:flex-end}.lesson-group>header strong{max-width:100%;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;color:var(--ink);font-size:15px}.lesson-group>header small{color:#62736f8a;font-size:10px;font-weight:750;margin-top:1px}.lesson-group>header>i{width:9px;height:9px;flex:0 0 auto;border-radius:50%;background:var(--coral)}.lesson-group-body{position:relative;display:grid;gap:12px;padding:0 36px 0 20px}.lesson-group-body:after{content:"";position:absolute;z-index:0;top:0;bottom:0;right:24px;width:2px;background:repeating-linear-gradient(to bottom,rgba(98,115,111,.24) 0 7px,transparent 7px 12px);border-radius:99px}.lesson-row{position:relative;z-index:1;width:100%;height:142px;padding:15px 128px 13px 16px;border:1px solid rgba(255,255,255,.5);border-radius:24px;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;text-align:left;box-shadow:none}.lesson-tone-0{background:linear-gradient(135deg,#b7ddd4,#e8d9c8)}.lesson-tone-1{background:linear-gradient(135deg,#e8b5a7,#f1d8c9)}.lesson-tone-2{background:linear-gradient(135deg,#9fad9f,#d9d0c7)}.lesson-tone-3{background:linear-gradient(135deg,#c7cdd9,#e6c8c1)}.lesson-tone-4{background:linear-gradient(135deg,#d8cdba,#b9d2ce)}.lesson-row:after{content:"";position:absolute;z-index:1;inset:0;background:linear-gradient(90deg,rgba(183,221,212,.94),rgba(217,208,199,.55) 57%,transparent 76%);pointer-events:none}.lesson-row>span{position:relative;z-index:2;min-width:0;height:100%;display:flex;flex-direction:column;align-items:stretch;justify-content:space-between}.lesson-row strong,.lesson-row small{overflow:hidden;text-overflow:ellipsis;text-align:right}.lesson-row strong{color:var(--ink);font-size:17px;line-height:1.22;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.lesson-row small{color:#3e4f4bad;font-size:10px;line-height:1.4;margin-top:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.lesson-row em{margin-top:auto;color:var(--ink);font-size:10px;font-weight:850;font-style:normal;letter-spacing:.4px;text-align:left}.lesson-row em i{display:inline-block;width:3px;height:3px;border-radius:50%;background:var(--coral);vertical-align:middle}.lesson-card-art{position:absolute;z-index:0;top:8px;right:-5px;width:48%;height:126px;color:#4554506b;overflow:visible}.lesson-card-art circle{fill:#ffffff47;stroke:none}.lesson-card-art path,.lesson-card-art g circle{fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}.lesson-card-art .conduction-bars rect{fill:#45545026;stroke:none}.inline-loader{margin:17px 20px;display:flex;align-items:center;gap:9px;font-size:13px}.inline-loader span{width:16px;height:16px;border:2px solid var(--sand);border-top-color:var(--coral);border-radius:50%;animation:spin .7s linear infinite}.refresh-hint{margin:18px auto 0;display:flex;align-items:center;gap:4px;color:#62736fad;background:transparent;font-size:12px}.back-button{display:flex;align-items:center;padding:3px 0;background:transparent;font-weight:750}.back-button span{width:35px;height:35px;margin-right:10px;background:#fff;border-radius:50%;display:grid;place-items:center;font-size:27px;line-height:1}.lesson-screen h1,.quiz-detail>h1{margin-top:18px;color:var(--ink);font-size:29px;line-height:1.12}.coral-label{font-size:13px;font-weight:750;margin-top:5px}.lesson-hero{width:100%;height:220px;object-fit:cover;border-radius:22px;margin-top:15px}.lesson-screen article{white-space:pre-wrap;background:#fff;border-radius:22px;padding:20px;margin:15px 0;line-height:1.55}.test-screen>header h1,.path-dashboard h1,.question-list-screen h1{font-size:28px;color:var(--ink);letter-spacing:-.5px}.test-screen>header p,.path-dashboard>p,.question-list-screen>p{color:#62736fb3;margin-top:4px}.test-path-list{display:grid;gap:15px;margin-top:21px}.test-path-card{width:100%;height:154px;padding:20px;border-radius:27px;overflow:hidden;position:relative;color:#fff;background:linear-gradient(90deg,var(--ink),var(--sage));display:flex;flex-direction:column;justify-content:space-between;text-align:left;box-shadow:0 7px 16px #45545029}.test-path-card>img,.test-shade{position:absolute;top:0;right:0;width:52%;height:100%;object-fit:cover}.test-shade{width:100%;background:linear-gradient(90deg,var(--ink) 0%,rgba(98,115,111,.9) 58%,transparent)}.test-path-card>div{position:relative;z-index:1}.test-card-top{display:flex;justify-content:space-between;align-items:center}.test-card-top b{padding:7px 11px;border-radius:99px;background:#ffffff2b}.test-card-top i{width:36px;height:36px;background:#fff;color:var(--coral);border-radius:50%;display:grid;place-items:center}.test-card-top svg{width:21px}.test-path-card h3{max-width:78%;font-size:20px;line-height:1.1}.test-path-card p{color:#ffffffd9;font-size:13px;margin-top:5px}.path-dashboard h1{margin-top:21px}.collection-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}.collection-card{min-height:183px;padding:17px;border-radius:25px;display:flex;flex-direction:column;text-align:left;color:#fff}.collection-card span{font-weight:800}.collection-card strong{font-size:48px;line-height:1;margin:24px 0 auto}.collection-card small{display:flex;align-items:center;gap:4px;margin-top:17px;font-weight:750}.coral-tone{background:linear-gradient(145deg,var(--blush),var(--coral))}.sage-tone{background:linear-gradient(145deg,var(--sage),var(--ink))}.dashboard-tip{display:flex;align-items:center;background:#fff;padding:18px;border-radius:24px;margin-top:18px}.dashboard-tip>svg{width:45px;height:45px;padding:10px;background:#9fad9f4d;border-radius:15px}.dashboard-tip span{display:flex;flex-direction:column;padding-left:13px}.dashboard-tip small{color:#62736fad;margin-top:3px}.question-list-screen h1{margin-top:20px}.question-list{display:grid;gap:11px;margin-top:18px}.question-row{width:100%;min-height:78px;background:#fff;border-radius:21px;padding:13px;display:flex;align-items:center;text-align:left;box-shadow:0 3px 10px #45545012}.question-row>div{width:45px;height:45px;flex:0 0 auto;border-radius:15px;display:grid;place-items:center}.question-mark{background:#9fad9f52}.question-row .correct{background:#78ab8b3d;color:#4c7c5c}.question-row .wrong{background:#db846e33;color:var(--danger)}.question-row>span{min-width:0;flex:1;display:flex;flex-direction:column;padding:0 12px}.question-row strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.question-row small{font-size:12px;color:#62736fa8;margin-top:3px}.question-row>svg{width:18px}.question-prompt{margin-top:16px;padding:18px;border-radius:25px;background:#e8b5a7ad}.question-prompt h2{font-size:23px;line-height:1.16}.question-prompt p{margin-top:9px;line-height:1.45}.question-prompt img{width:100%;height:210px;object-fit:cover;border-radius:17px;margin-top:14px;background:var(--sand)}.options{display:grid;gap:10px;margin:15px 0}.options>button,.options.review>div{width:100%;min-height:62px;border:1.5px solid transparent;background:#fff;border-radius:19px;padding:12px;display:flex;align-items:center;text-align:left}.options i{width:35px;height:35px;flex:0 0 auto;border-radius:50%;background:#d9d0c78c;display:grid;place-items:center;font-style:normal;font-weight:850}.options span{flex:1;padding:0 11px}.options svg{width:20px}.options .selected{border-color:var(--ink)}.options .selected i{background:var(--ink);color:#fff}.options .correct{border-color:#5f936f;background:#f0f8f2}.options .wrong{border-color:var(--coral);background:#fff4f1}.options.review small,.options.review b{font-size:10px;font-style:normal;margin-left:7px}.options.review small{color:#4c7c5c}.options.review b{color:var(--coral)}.feedback{padding:17px;border-radius:19px;margin:15px 0}.feedback.correct{background:#9fad9f52}.feedback.wrong{background:#e8b5a773}.feedback p{margin-top:6px;line-height:1.42}.feedback time{display:block;margin-top:11px;color:#62736f9e;font-size:11px}.chat-screen{height:100%;display:flex;flex-direction:column;padding-top:max(8px,env(safe-area-inset-top));background:var(--background)}.chat-screen>header{display:flex;align-items:center;padding:6px 20px 8px}.chat-screen>header>div{width:48px;height:48px;border-radius:16px;background:var(--sage);color:var(--coral);display:grid;place-items:center}.chat-screen>header>span{padding-left:12px}.chat-screen h1{font-size:22px}.chat-screen header p{color:#62736fa6;font-size:13px}.messages{flex:1;overflow-y:auto;padding:8px 16px 12px;display:flex;flex-direction:column;gap:10px;overscroll-behavior:contain}.message{width:fit-content;max-width:84%;padding:10px;border-radius:21px;line-height:1.43;box-shadow:0 2px 7px #4554500d}.message p{padding:5px;white-space:pre-wrap}.message img{width:100%;height:190px;object-fit:cover;border-radius:15px;background:var(--sand)}.message.student{align-self:flex-end;color:#fff;background:var(--coral);border-bottom-right-radius:5px}.message.pulse{align-self:flex-start;background:#fff;border-bottom-left-radius:5px}.thinking{display:flex;align-items:center;gap:8px;font-size:13px}.thinking .button-spinner{width:18px;height:18px;border-color:var(--sand);border-top-color:var(--coral)}.attachment-preview{margin:5px 12px;padding:9px;border-radius:18px;background:#9fad9f61;display:flex;align-items:center}.attachment-preview img{width:62px;height:62px;flex:0 0 auto;object-fit:cover;border-radius:14px}.attachment-preview span{min-width:0;flex:1;display:flex;flex-direction:column;padding:0 11px}.attachment-preview small{color:#62736fa8;font-size:11px;margin-top:2px}.attachment-preview button{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:#fffc;color:var(--coral)}.attachment-preview button svg{width:18px}.chat-error{margin:2px 18px;color:var(--danger);font-size:12px}.chat-composer{display:flex;align-items:flex-end;gap:7px;margin:7px 10px 9px;padding:8px;border-radius:25px;background:#fff;box-shadow:0 5px 17px #45545021}.attach-button,.send-button{width:48px;height:48px;flex:0 0 auto;border-radius:50%;display:grid;place-items:center}.attach-button{background:#e8b5a7a1}.send-button{background:var(--coral);color:#fff}.send-button:disabled{background:var(--sand)}.chat-composer textarea{min-width:0;flex:1;max-height:112px;min-height:48px;resize:none;padding:13px;border:1px solid var(--sand);outline:none;border-radius:19px;color:var(--ink);background:#f7f4f185;font-size:16px;line-height:1.35}.chat-composer textarea:focus{border-color:var(--sage)}.hidden-input{display:none}.historic-attachment{min-height:52px;border-radius:14px;background:#d9d0c759;display:flex;align-items:center;justify-content:center;gap:8px;font-size:12px;font-weight:750}.historic-attachment svg{width:19px}.sheet-backdrop{position:absolute;inset:0;z-index:40;background:#34403d57;display:flex;align-items:flex-end}.attachment-sheet{width:100%;padding:8px 20px max(28px,env(safe-area-inset-bottom));border-radius:28px 28px 0 0;background:var(--background);animation:sheet-up .25s ease-out}@keyframes sheet-up{0%{transform:translateY(100%)}}.sheet-handle{width:42px;height:5px;background:var(--sand);border-radius:99px;margin:0 auto 17px}.attachment-sheet h2{font-size:22px}.attachment-sheet>p{color:#62736fa6;font-size:13px;margin:4px 0 15px}.attachment-sheet>button{width:100%;min-height:74px;border-radius:19px;display:flex;align-items:center;text-align:left;padding:15px 17px;margin-top:11px}.attachment-sheet>button>svg{width:27px;height:27px;margin-right:15px}.attachment-sheet>button>span{display:flex;flex-direction:column}.attachment-sheet>button small{margin-top:3px;opacity:.68}.camera-choice{background:var(--blush)}.gallery-choice{background:#9fad9fbf}.camera-overlay{position:absolute;z-index:60;inset:0;background:#17211f;color:#fff;display:flex;flex-direction:column}.camera-overlay>header{min-height:calc(62px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 16px 0;display:grid;grid-template-columns:45px 1fr 45px;align-items:center;text-align:center}.camera-overlay>header button{width:38px;height:38px;border-radius:50%;background:#ffffff24;color:#fff;display:grid;place-items:center}.camera-viewport{flex:1;min-height:0;position:relative;overflow:hidden;background:#0a0d0c;display:grid;place-items:center}.camera-viewport video{width:100%;height:100%;object-fit:cover}.camera-guide{position:absolute;inset:8%;pointer-events:none}.camera-guide span{position:absolute;width:34px;height:34px;border-color:var(--blush);border-style:solid}.camera-guide span:nth-child(1){left:0;top:0;border-width:3px 0 0 3px}.camera-guide span:nth-child(2){right:0;top:0;border-width:3px 3px 0 0}.camera-guide span:nth-child(3){left:0;bottom:0;border-width:0 0 3px 3px}.camera-guide span:nth-child(4){right:0;bottom:0;border-width:0 3px 3px 0}.camera-unavailable{padding:28px;text-align:center;display:grid;justify-items:center;gap:14px}.camera-unavailable>svg{width:48px;height:48px;color:var(--blush)}.camera-unavailable p{max-width:300px;line-height:1.45}.camera-unavailable button{padding:13px 18px;border-radius:15px;background:var(--blush);color:var(--ink);font-weight:800}.camera-overlay>footer{min-height:calc(142px + env(safe-area-inset-bottom));padding:13px 20px calc(18px + env(safe-area-inset-bottom));display:flex;flex-direction:column;align-items:center;justify-content:space-between}.camera-overlay>footer p{color:#ffffffb3;font-size:12px;text-align:center}.shutter{width:68px;height:68px;padding:5px;border:3px solid white;border-radius:50%;background:transparent}.shutter i{display:block;width:100%;height:100%;border-radius:50%;background:#fff}.screen-fallback{height:100%;padding:40px 28px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.screen-fallback>div{width:80px;height:80px;border-radius:50%;background:#e8b5a780;color:var(--coral);display:grid;place-items:center;font-size:38px;font-weight:900}.screen-fallback h1{margin-top:18px;font-size:24px}.screen-fallback p{margin:8px 0 20px;line-height:1.45;color:#62736fb3}.bottom-nav{position:absolute;z-index:20;left:0;right:0;bottom:0;height:calc(var(--nav-height) + env(safe-area-inset-bottom));padding:9px 18px calc(9px + env(safe-area-inset-bottom));display:flex;justify-content:center;pointer-events:none;background:linear-gradient(transparent,#f7f4f1f0 28%)}.bottom-nav-inner{height:64px;padding:5px;border-radius:34px;background:#fffffff5;box-shadow:0 9px 24px #4554502e;display:flex;align-items:center;gap:5px;pointer-events:auto}.bottom-nav button{width:58px;height:54px;padding:0 16px;border-radius:28px;background:#9fad9f45;display:flex;align-items:center;justify-content:center;transition:width .28s,background .28s,color .28s}.bottom-nav button span{font-size:15px;font-weight:850;margin-left:9px}.connection-toast{position:absolute;z-index:50;top:calc(10px + env(safe-area-inset-top));left:50%;transform:translate(-50%);width:max-content;max-width:calc(100% - 28px);min-height:42px;padding:9px 10px 9px 14px;border-radius:17px;background:var(--ink);color:#fff;box-shadow:0 7px 18px #34403d40;display:flex;align-items:center;font-size:12px;animation:toast-in .25s ease-out}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,-12px)}}.connection-toast i{width:6px;height:6px;flex:0 0 auto;border-radius:50%;background:var(--coral);margin-right:8px}.connection-toast span{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.connection-toast button{background:transparent;color:#fff;font-size:21px;padding:0 5px 1px 12px}.empty-state{padding:42px 14px;text-align:center}.empty-state>div{width:104px;height:104px;margin:auto;border-radius:50%;background:#9fad9f59;color:var(--coral);display:grid;place-items:center;font-size:49px;font-weight:850}.empty-state h3{font-size:21px;margin-top:18px}.empty-state p{color:#62736fad;margin-top:7px}@media(max-width:365px){.streak-card{margin-inline:14px;padding:13px}.flame{width:54px;height:54px;margin-left:8px}.streak-copy h2{font-size:31px}.bottom-nav{padding-inline:8px}.bottom-nav button.active{width:111px}.bottom-nav button{width:53px;padding-inline:14px}.collection-grid{grid-template-columns:1fr}}@media(min-width:700px){body{padding:24px 0}.app-shell,.auth-screen,.splash{height:min(900px,calc(100vh - 48px));border-radius:34px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}.fullscreen-image{position:absolute;z-index:120;inset:0;display:grid;place-items:center;overflow:hidden;background:#101716;color:#fff}.fullscreen-image>img{width:100%;height:100%;padding:calc(72px + env(safe-area-inset-top)) 10px calc(72px + env(safe-area-inset-bottom));object-fit:contain;background:#101716}.fullscreen-image>header{position:absolute;top:env(safe-area-inset-top);left:0;right:0;min-height:70px;padding:12px 16px;display:grid;grid-template-columns:48px minmax(0,1fr) 48px;align-items:center;gap:8px}.fullscreen-image>header strong{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;text-align:center}.fullscreen-image>header button{width:45px;height:45px;border-radius:50%;background:#ffffff24;color:#fff;display:grid;place-items:center;font-size:29px}.fullscreen-return{position:absolute;bottom:calc(18px + env(safe-area-inset-bottom));left:50%;transform:translate(-50%);width:max-content;padding:12px 22px;border-radius:16px;background:#ffffff24;color:#fff;font-weight:800}.test-screen{padding-inline:20px}.test-screen>header h1{font-size:27px;font-weight:900;letter-spacing:-.65px}.quiz-welcome-card{height:210px;margin-top:18px;position:relative;overflow:hidden;border-radius:29px;background:linear-gradient(135deg,#bfd9d3,#d7cee8 54%,#f0c7be)}.quiz-welcome-card:before,.quiz-welcome-card:after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:50%;background:#ffffff2e}.quiz-welcome-card:before{width:170px;height:170px}.quiz-welcome-card:after{width:102px;height:102px;background:#ffffff38}.quiz-ecg-wave{fill:none;stroke:currentColor;stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.quiz-welcome-card>.quiz-ecg-wave{position:absolute;z-index:2;left:16%;top:39%;width:68%;height:76px;color:#425550c2}.quiz-orbit{position:absolute;z-index:3;width:49px;height:49px;border-radius:50%;display:grid;place-items:center;color:var(--ink);font-size:12px;font-weight:900}.orbit-leads{left:16px;top:16px;background:#e8f3f1}.orbit-ecg{right:16px;top:16px;background:#f3d3cb}.orbit-dx{left:16px;bottom:16px;background:#e4dcf1}.quiz-welcome-card>strong{position:absolute;z-index:3;top:63%;left:50%;width:max-content;transform:translate(-50%,-50%);font-size:17px;color:var(--ink)}.quiz-welcome-card>div{position:absolute;z-index:3;right:16px;bottom:16px;padding:9px 14px;border-radius:16px;background:#3e4f4ad6;color:#fff;display:flex;flex-direction:column;align-items:flex-end}.quiz-welcome-card>div b{font-size:14px}.quiz-welcome-card>div small{margin-top:2px;color:#ffffffb8}.test-grid-heading{margin-top:22px}.test-grid-heading h2{font-size:18px}.test-grid-heading p{font-size:12px}.test-path-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:12px}.test-path-card{width:100%;height:190px;padding:15px;border-radius:25px;color:var(--card-accent);background:linear-gradient(135deg,var(--card-a),var(--card-b));box-shadow:none}.test-path-card>.quiz-ecg-wave{position:absolute;left:0;top:25%;width:100%;height:72px;color:color-mix(in srgb,var(--card-accent) 25%,transparent)}.test-path-card:after{content:"";position:absolute;width:100px;height:100px;right:-31px;bottom:-33px;border-radius:50%;background:color-mix(in srgb,var(--card-accent) 8%,transparent)}.test-path-top{display:flex;align-items:center;justify-content:space-between}.test-path-top small{color:color-mix(in srgb,var(--card-accent) 78%,transparent);font-weight:900}.test-path-top i{width:30px;height:30px;border-radius:50%;background:#ffffff8c;display:grid;place-items:center;font-style:normal;font-size:22px}.test-path-card>div:last-child{margin-top:auto}.test-path-card h3{max-width:100%;color:var(--card-accent);font-size:20px;line-height:1;font-weight:900;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.test-path-card p{color:color-mix(in srgb,var(--card-accent) 75%,transparent);font-size:12px;font-weight:750}.test-palette-0{--card-a:#bde2e8;--card-b:#d4efe5;--card-accent:#28727a }.test-palette-1{--card-a:#f0c7e8;--card-b:#e7d0f2;--card-accent:#963d85 }.test-palette-2{--card-a:#d3d0f2;--card-b:#c8ddf0;--card-accent:#6257a2 }.test-palette-3{--card-a:#f5d0bd;--card-b:#f4e1c8;--card-accent:#b8663e }.test-palette-4{--card-a:#d2eacf;--card-b:#e7f1c9;--card-accent:#5e7d39 }.test-palette-5{--card-a:#f0eab8;--card-b:#d9e9c3;--card-accent:#747b2e }.collection-card{position:relative;overflow:hidden;min-height:178px;color:var(--collection-accent);box-shadow:none}.collection-card.new-tone{--collection-accent:#276c73;background:linear-gradient(145deg,#bfe5e1,#c9daef)}.collection-card.review-tone{--collection-accent:#963f75;background:linear-gradient(145deg,#eac9e7,#f0d4c4)}.collection-card>.quiz-ecg-wave{position:absolute;left:0;top:25%;width:100%;height:65px;opacity:.18}.collection-card>div{display:flex;align-items:center;justify-content:space-between}.collection-card>div strong{margin:0;font-size:31px}.collection-card>div i{width:34px;height:34px;border-radius:50%;background:#ffffff80;display:grid;place-items:center;font-size:22px;font-style:normal}.collection-card>span{margin-top:auto;font-size:17px}.collection-card>small{margin-top:3px;opacity:.72}.dashboard-tip{box-shadow:none}.dashboard-tip>i{width:48px;height:48px;border-radius:50%;background:#d9d0c7a6;display:grid;place-items:center;color:var(--coral);font-size:22px;font-style:normal;font-weight:900}.quiz-detail{padding-inline:20px}html[data-quiz-focus] .bottom-nav{display:none}.fullscreen-image{touch-action:none;overscroll-behavior:contain}.fullscreen-image .zoomable-ecg{transform-origin:center;transition:transform 80ms ease-out;-webkit-user-select:none;user-select:none;-webkit-user-drag:none}.zoom-controls{position:absolute;z-index:4;left:50%;bottom:max(18px,env(safe-area-inset-bottom));transform:translate(-50%);display:flex;gap:5px;padding:5px;border-radius:24px;background:#ffffff29;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.zoom-controls button{min-width:44px;height:42px;padding:0 12px;border-radius:20px;background:#101716b8;color:#fff;font-weight:850}.zoom-controls button:disabled{opacity:.35}.focused-question{padding-bottom:max(28px,env(safe-area-inset-bottom));background:linear-gradient(#dceae6 0,#f7f4f1 36%)}.focused-question>.answer-heading{display:none}.question-navigation{position:sticky;z-index:9;top:0;display:flex;align-items:center;gap:10px;padding:8px 0 10px;background:linear-gradient(#dceae6 72%,transparent)}.question-navigation>button,.question-navigation span button{width:44px;height:44px;border-radius:50%;background:#fffffff0;color:var(--ink);font-size:27px;font-weight:600}.question-navigation>strong{flex:1;text-align:center;color:var(--ink);font-size:14px}.question-navigation span{display:flex;gap:7px}.question-navigation span .next{background:var(--coral);color:#fff}.question-navigation button:disabled{opacity:.35}.question-mode-card{height:92px;margin-top:15px;padding:0 17px;border-radius:24px;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:center;color:var(--mode-accent)}.question-mode-card.new{--mode-accent:#276c73;background:linear-gradient(135deg,#bfe5e1,#cbdcf0)}.question-mode-card.review{--mode-accent:#8b4878;background:linear-gradient(135deg,#ebc9e6,#f0d6c7)}.question-mode-card>.quiz-ecg-wave{position:absolute;right:0;top:10px;width:51%;height:70px;opacity:.3}.question-mode-card strong,.question-mode-card small{position:relative;z-index:1}.question-mode-card strong{font-size:18px}.question-mode-card small{margin-top:3px;font-weight:700;opacity:.72}.question-prompt{margin-top:12px;padding:18px;border-radius:27px;background:#fff}.question-prompt.focused-prompt{padding:0;overflow:hidden}.focused-prompt .question-media{height:246px;margin:0;border-radius:27px 27px 0 0;background:#f4eeea}.focused-prompt .question-media img{object-fit:contain}.focused-prompt .question-media:after{content:"";position:absolute;inset:45% 0 0;background:linear-gradient(transparent,#2735313d);pointer-events:none}.focused-prompt .question-media>em{position:absolute;z-index:2;left:12px;top:12px;padding:7px 11px;border-radius:13px;background:#ffffffe6;color:var(--ink);font-size:12px;font-style:normal;font-weight:850}.focused-prompt .question-media>i{z-index:2}.question-copy{padding:18px;text-align:right}.question-copy>b{display:inline-flex;padding:7px 11px;border-radius:12px;background:#e7efea;color:#52736b;font-size:11px}.question-copy>p{margin-top:13px;color:var(--ink);font-size:17px;line-height:1.7;text-align:right;unicode-bidi:plaintext;overflow-wrap:anywhere}.question-prompt>b{display:inline-flex;padding:7px 11px;border-radius:12px;color:#52736b;background:#e7efea;font-size:11px;letter-spacing:1px}.question-prompt h2{margin-top:13px;font-size:23px;line-height:1.13}.question-prompt p{color:#62736fcc;line-height:1.5}.question-media{width:100%;height:205px;margin-top:15px;position:relative;overflow:hidden;border-radius:19px;background:linear-gradient(135deg,#d8e9e5,#e8dded)}.question-media img{width:100%;height:100%;margin:0;border-radius:0;object-fit:cover}.question-media.placeholder{opacity:1}.question-media.placeholder .quiz-ecg-wave{width:82%;height:90px;color:#42555061}.question-media.placeholder span{position:absolute;bottom:18px;left:0;right:0;font-weight:750}.question-media>i{position:absolute;right:10px;bottom:10px;display:flex;align-items:center;gap:6px;padding:8px 11px;border-radius:12px;color:#fff;background:#3a4b46d6;font-size:12px;font-style:normal;font-weight:800}.answer-heading{margin:18px 0 11px}.answer-heading h3{font-size:18px}.answer-heading p{margin-top:3px;color:#62736f9e;font-size:12px}.quiz-options{display:grid;gap:10px}.quiz-option{--option-accent:rgba(98,115,111,.68);width:100%;min-height:66px;padding:14px 15px;border:1px solid color-mix(in srgb,var(--option-accent) 12%,transparent);border-radius:20px;background:#fff;display:flex;align-items:center;text-align:left}.quiz-option[dir=rtl]{text-align:right}.quiz-option[dir=rtl]>span{padding-right:13px;padding-left:13px}.quiz-option[dir=rtl]>span strong{unicode-bidi:plaintext;text-align:right;overflow-wrap:anywhere}.quiz-option>i{width:38px;height:38px;flex:0 0 auto;border-radius:50%;background:#d9d0c785;color:var(--ink);display:grid;place-items:center;font-style:normal;font-weight:900}.quiz-option>span{min-width:0;flex:1;padding:0 13px;display:flex;flex-direction:column}.quiz-option>span strong{font-size:14px}.quiz-option>span small{margin-top:4px;color:var(--option-accent);font-weight:850}.quiz-option>b{width:22px;height:22px;border-radius:50%;background:#d9d0c78c}.quiz-option.selected{--option-accent:#477a72;border-color:#477a726b;background:#d5e7e3}.quiz-option.correct{--option-accent:#3f774d;border-color:#3f774d6b;background:#d5ecd9}.quiz-option.wrong{--option-accent:#a6403c;border-color:#a6403c6b;background:#f5d0cd}.quiz-option.selected>i,.quiz-option.correct>i,.quiz-option.wrong>i{background:var(--option-accent);color:#fff}.quiz-option.selected>b{background:var(--option-accent)}.quiz-feedback{padding:17px;margin:12px 0;border-radius:22px}.quiz-feedback.correct{background:#d9eddc}.quiz-feedback.wrong{background:#f7d8d4}.quiz-feedback p{margin-top:6px;color:#62736fc7;line-height:1.45}.detailed-answer{padding:18px;margin-top:12px;border-radius:24px;background:linear-gradient(135deg,#dceae5,#f0e4d8)}.detailed-answer header{display:flex;align-items:center}.detailed-answer header>i{width:42px;height:42px;border-radius:50%;background:#ffffffa6;display:grid;place-items:center;font-style:normal;font-size:21px;font-weight:900}.detailed-answer header>span{display:flex;flex-direction:column;padding-left:12px}.detailed-answer header small{margin-top:2px;opacity:.58}.detailed-answer hr{border:0;border-top:1px solid rgba(98,115,111,.1);margin:14px 0}.detailed-answer p{line-height:1.5;color:#62736fd1}.detailed-answer time{display:block;margin-top:14px;font-size:11px;color:#62736f8a}.quiz-detail>.primary-button{margin-top:12px}.lesson-reader{position:absolute;z-index:35;inset:0;overflow:hidden;background:#35443f;color:var(--ink)}.lesson-reader-hero{width:100%;height:53%;position:absolute;inset:0 0 auto;overflow:hidden;background:linear-gradient(145deg,#9fad9f,#62736f,#384742)}.lesson-reader-hero img{width:100%;height:100%;object-fit:cover}.lesson-reader-hero>i{position:absolute;inset:0;background:linear-gradient(rgba(0,0,0,.14),transparent 50%,rgba(52,69,64,.46))}.lesson-reader-hero.placeholder{color:#fff}.lesson-reader-hero.placeholder .ecg-wave{width:82%;height:110px;color:#ffffff94}.lesson-reader-hero.placeholder .ecg-wave path{stroke:currentColor}.lesson-reader-hero.placeholder>strong{position:absolute;left:0;right:0;top:61%;color:#ffffffd1}.lesson-reader-actions{position:absolute;z-index:3;left:0;right:0;top:env(safe-area-inset-top);padding:12px 16px;display:flex;justify-content:space-between}.lesson-reader-actions button{min-width:45px;height:45px;padding:0 13px;border-radius:50%;background:#2f3e39b8;color:#fff;display:flex;align-items:center;justify-content:center;gap:6px;font-weight:800}.lesson-reader-actions button:first-child{font-size:29px}.lesson-reader-actions button:last-child{border-radius:16px;font-size:12px}.lesson-reading-sheet{position:absolute;z-index:4;left:0;right:0;bottom:0;min-height:43%;max-height:88%;border:1px solid rgba(255,255,255,.75);border-bottom:0;border-radius:34px 34px 0 0;background:var(--background);display:flex;flex-direction:column;overflow:hidden}.lesson-drag-handle{width:100%;height:38px;flex:0 0 38px;background:transparent;display:grid;place-items:center;touch-action:none;cursor:ns-resize}.lesson-drag-handle i{width:54px;height:5px;border-radius:10px;background:#62736f3d}.lesson-reading-content{flex:1;min-width:0;min-height:0;overflow-x:hidden;overflow-y:auto;padding:0 21px max(30px,env(safe-area-inset-bottom));overscroll-behavior:contain;scrollbar-width:none;text-align:right}.lesson-reading-content::-webkit-scrollbar{display:none}.lesson-reading-meta{display:flex;align-items:center;gap:8px}.lesson-reading-meta>span{direction:rtl;text-align:right;max-width:58%;padding:7px 11px;border-radius:12px;background:#9fad9f85;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-size:10px;font-weight:850}.lesson-reading-meta>b{color:var(--coral);font-size:11px;letter-spacing:.8px;white-space:nowrap}.lesson-reading-meta>span:first-child{margin-right:auto}.reading-progress{--progress:0deg;width:29px;height:29px;flex:0 0 auto;padding:3px;border-radius:50%;background:conic-gradient(var(--coral) var(--progress),rgba(159,173,159,.28) 0);display:grid;place-items:center}.reading-progress i{width:23px;height:23px;border-radius:50%;background:var(--background);display:grid;place-items:center;color:var(--ink);font-size:8px;font-style:normal;font-weight:800}.lesson-reading-content h1{margin-top:14px;font-size:29px;line-height:1.45;letter-spacing:0;overflow-wrap:anywhere}.lesson-difficulty{margin-top:5px;color:#62736f8f;font-weight:750;text-align:right}.lesson-overview{margin-top:20px;padding:17px;border-radius:22px;background:linear-gradient(135deg,#d7e8e3,#e8ddd4);display:flex;align-items:flex-start;gap:12px;text-align:right}.lesson-overview>i{width:39px;height:39px;flex:0 0 auto;border-radius:50%;background:#ffffffad;color:var(--coral);display:grid;place-items:center;font-style:normal;font-size:21px;font-weight:900}.lesson-overview>span{min-width:0;flex:1}.lesson-overview p{margin-top:4px;line-height:1.7;color:#62736fb8;unicode-bidi:plaintext}.lesson-objective{margin-top:18px;padding:17px;border-radius:22px;background:var(--ink);color:#fff;display:flex;align-items:flex-start;gap:13px;text-align:right}.lesson-objective>svg{width:42px;height:42px;flex:0 0 auto;padding:10px;border-radius:14px;background:var(--coral)}.lesson-objective>span{display:grid;gap:4px;min-width:0}.lesson-objective small{color:var(--blush);font-size:12px;font-weight:850}.lesson-objective strong{font-size:15px;line-height:1.6;font-weight:650}.reader-chips{display:flex;gap:8px;margin-top:18px;overflow-x:auto;scrollbar-width:none}.reader-chips::-webkit-scrollbar{display:none}.reader-chips span{flex:0 0 auto;padding:8px 12px;border:1px solid rgba(159,173,159,.28);border-radius:14px;background:#ffffffd1;color:#62736fc7;font-size:11px;font-weight:750}.structured-lesson{display:grid;gap:13px;margin-top:10px;text-align:right}.lesson-paragraph{display:flex;align-items:flex-start;gap:12px;padding:5px 0}.lesson-paragraph p{flex:1;min-width:0;color:#62736feb;font-size:16px;line-height:1.9;overflow-wrap:anywhere;unicode-bidi:plaintext}.lesson-paragraph>b{flex:0 0 auto;padding-top:6px;color:var(--coral);font-size:10px}.lesson-block{width:100%;min-width:0;padding:17px;border:1px solid transparent;border-radius:21px;text-align:right;color:var(--ink);transition:transform .12s ease-out,background .18s ease-out}.lesson-block:active{transform:scale(.985)}.lesson-block.method{background:#d9e7e3}.lesson-block.practice{background:#e4ddf0;color:#625675}.lesson-block.warning{background:#f6ddd6;color:#8a493a}.lesson-block.takeaway{background:#dde8d9;color:#52674c}.lesson-block header{display:flex;align-items:center;justify-content:space-between;gap:10px}.lesson-block header>span{min-width:0;display:flex;align-items:center;gap:11px}.lesson-block header strong{min-width:0;overflow-wrap:anywhere;unicode-bidi:plaintext}.lesson-block header i{width:36px;height:36px;flex:0 0 auto;border-radius:12px;background:#ffffffad;display:grid;place-items:center}.lesson-block header i svg{width:20px;height:20px}.lesson-block header>svg{width:19px;flex:0 0 auto;transition:transform .18s ease-out}.lesson-block.open header>svg{transform:rotate(180deg)}.lesson-block p{margin-top:13px;font-size:15px;line-height:1.85;color:currentColor;overflow-wrap:anywhere;unicode-bidi:plaintext}.lesson-block>small{display:block;margin-top:7px;color:currentColor;opacity:.58}.lesson-references{position:relative;width:100%;padding:16px;border:1px solid rgba(159,173,159,.25);border-radius:20px;background:#ffffffbf;color:var(--ink);text-align:right}.lesson-references>span{display:flex;align-items:center;justify-content:space-between;padding-left:28px}.lesson-references>span b{color:var(--coral)}.lesson-references>svg{position:absolute;left:16px;top:17px;width:18px;transition:transform .18s ease-out}.lesson-references.open>svg{transform:rotate(180deg)}.lesson-references>div{margin-top:11px;display:grid;gap:7px}.lesson-references p{font-size:13px;line-height:1.5;color:#62736fb8}.lesson-reading-content>h2{margin-top:24px;font-size:19px}.lesson-reading-content>article{margin-top:9px;white-space:pre-wrap;font-size:16px;line-height:1.65;color:#62736fd6}.lesson-reading-content>aside{margin-top:24px;padding:16px;border-radius:19px;background:#d9d0c78c;line-height:1.45;font-size:12px;color:#62736fb3}.lesson-reading-content>.primary-button{margin:18px 0}.chat-screen{background:linear-gradient(#e1ece8,var(--background) 42%,#f4e8e2);padding-top:max(8px,env(safe-area-inset-top))}.pulse-chat-header{padding:5px 18px 8px!important}.pulse-chat-header>span{min-width:0;flex:1;padding-left:12px!important}.pulse-chat-header h1{font-size:21px}.pulse-chat-header p{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px!important}.pulse-chat-header>b{padding:7px 10px;border-radius:16px;display:flex;align-items:center;font-size:11px}.pulse-chat-header>b.available{background:#9fad9fb8}.pulse-chat-header>b.offline{background:#e8b5a7d1}.pulse-chat-header>b i{width:7px;height:7px;margin-right:6px;border-radius:50%;background:#527a5b}.pulse-chat-header>b.offline i{background:var(--coral)}.ai-orb{width:47px;height:47px;flex:0 0 auto;position:relative;border-radius:50%;background:radial-gradient(circle at 35% 30%,#fff,#d8e8e4 45%,#9fad9f);box-shadow:none!important}.ai-orb:after{content:"";position:absolute;width:13%;height:13%;left:28%;top:25%;border-radius:50%;background:#ffffffb3}.ai-orb.large{width:58px;height:58px}.ai-orb.small{width:31px;height:31px}.messages{padding:8px 15px 15px;gap:12px}.pulse-welcome{position:relative;overflow:hidden;flex:0 0 auto;padding:15px;border-radius:30px;background:linear-gradient(135deg,#bfdcd7,#d7deeb 53%,#f0d3cc)}.pulse-welcome>.ai-orb{margin-bottom:9px}.pulse-welcome>.ai-orb.large{width:48px;height:48px}.pulse-welcome>h2{position:relative;font-size:21px;line-height:1.1;letter-spacing:-.45px}.pulse-welcome>p{position:relative;margin-top:5px;color:#62736fa3;font-size:12px;line-height:1.35}.welcome-ecg{position:absolute;right:-2px;top:12px;width:48%;height:88px;fill:none;stroke:#3e504b40;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.pulse-welcome>div:last-child{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:11px}.pulse-welcome>div:last-child button{min-width:0;padding:8px 10px;border:1px solid rgba(255,255,255,.62);border-radius:16px;background:#ffffffb8;font-size:12px;font-weight:750;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pulse-welcome>div:last-child button span{color:var(--coral);margin-right:6px}.message-row{width:100%;display:flex;align-items:flex-end}.message-row.student{justify-content:flex-end}.message-row.pulse{justify-content:flex-start;gap:7px}.message-row .message{width:auto;max-width:84%;padding:11px;box-shadow:none;user-select:text;-webkit-user-select:text}.message-row.student .message{color:#fff;background:linear-gradient(135deg,#db846e,#c96f69);border-radius:22px 22px 6px}.message-row.pulse .message{background:linear-gradient(135deg,#fff,#f7f8f5);border-radius:22px 22px 22px 6px}.message-row .message p{line-height:1.5}.copy-message{margin-left:auto;padding:4px 5px;background:transparent;color:#62736f85;display:flex;align-items:center;gap:4px;font-size:11px;font-weight:800}.message-row.student .copy-message{color:#ffffffc2}.thinking{gap:7px}.thinking>span{padding:12px 15px;border:1px solid rgba(98,115,111,.06);border-radius:20px 20px 20px 6px;background:#ffffffeb;display:flex;align-items:center;gap:9px}.attachment-preview{border:1px solid rgba(98,115,111,.08);border-radius:20px;background:#d7e7e2}.chat-composer{margin:7px 10px calc(var(--nav-height) + env(safe-area-inset-bottom) + 4px);padding:7px;border:1px solid rgba(98,115,111,.09);border-radius:28px;box-shadow:none;background:#fffffff5}.attach-button{width:46px;height:46px;background:#e7d5df}.chat-editor{min-width:0;flex:1;position:relative;border-radius:21px;background:#f7f4f1b3}.chat-composer .chat-editor textarea{width:100%;min-height:48px;max-height:118px;padding:13px 43px 13px 13px;border:0;background:transparent}.chat-editor>button{position:absolute;right:7px;bottom:7px;width:34px;height:34px;border-radius:50%;background:#ffffffb8;display:grid;place-items:center}.send-button{background:var(--ink)}.send-button:disabled{background:var(--sand);color:#62736f59}html[data-chat-keyboard] .screen-host{height:100%}html[data-chat-keyboard] .bottom-nav{display:none}html[data-chat-keyboard] .chat-composer{margin-bottom:max(4px,env(safe-area-inset-bottom))}.bottom-nav-inner{height:64px;padding:5px;gap:5px;border-radius:34px;background:#fffffff5}.bottom-nav button{width:58px;height:54px;padding:0 16px;border-radius:28px;background:#9fad9f45;color:var(--ink)}.bottom-nav button.active{width:126px;background:var(--background);color:var(--coral)}.bottom-nav svg{flex:0 0 auto}.bottom-nav button span{margin-left:9px;color:var(--coral)}@media(max-width:365px){.test-path-list{grid-template-columns:1fr}.test-path-card{height:170px}.pulse-welcome>div:last-child{grid-template-columns:1fr}.pulse-chat-header>b{padding-inline:8px}.pulse-chat-header>b i{margin-right:0}.pulse-chat-header>b{font-size:0}}.lesson-reader-hero:disabled,.question-media:disabled{opacity:1}.flame{font-size:42px;font-weight:900}.path-signal span{font-size:10px}.lesson-row>i{font-size:22px;font-style:normal;font-weight:850}.continue-card>i{font-size:25px;font-style:normal;font-weight:900}.continue-card>b{color:#fff;font-size:22px}.search-field>b{width:21px;font-size:24px}.search-field button{font-size:21px}.timer>span{font-size:14px}.attach-button{font-size:25px}.attachment-preview>button{font-size:20px;font-weight:900}.attachment-sheet>button>i{width:27px;margin-right:15px;font-size:24px;font-style:normal;text-align:center}.historic-attachment>b{font-size:11px;padding:5px 6px;border-radius:7px;background:#ffffffa8}.camera-unavailable>i{font-size:48px;font-style:normal;color:var(--blush)}.camera-overlay>header button{font-size:25px}.scroll-screen{overflow-x:hidden}.quiz-detail,.quiz-feedback,.quiz-feedback *,.detailed-answer,.detailed-answer *,.lesson-reading-content,.lesson-reading-content *,.lesson-overview,.lesson-overview *{min-width:0;max-width:100%}.quiz-feedback strong,.quiz-feedback p,.detailed-answer p,.lesson-reading-content h1,.lesson-reading-content h2,.lesson-reading-content article,.lesson-reading-content aside,.lesson-overview p{white-space:normal;overflow-wrap:anywhere;word-break:break-word}.quiz-feedback strong{display:block;line-height:1.28}.detailed-answer p{display:block;width:100%;overflow:hidden;overflow-wrap:anywhere;word-break:normal;unicode-bidi:plaintext}.lesson-reading-content article{width:100%;contain:inline-size}.question-prompt h2[dir=auto],.question-prompt p[dir=auto],.quiz-option strong[dir=auto],.question-row strong[dir=auto],.quiz-feedback p[dir=auto],.detailed-answer p[dir=auto],.message p[dir=auto]{display:block;max-width:100%;overflow-wrap:anywhere;word-break:normal;unicode-bidi:plaintext;text-align:start}.message p[dir=auto]{white-space:pre-wrap}.chat-editor textarea[dir=auto]{unicode-bidi:plaintext;text-align:start}.quiz-welcome-card>.quiz-ecg-wave{z-index:1;color:#425550c2}.quiz-welcome-card>strong{z-index:4;width:max-content;max-width:calc(100% - 32px);padding:0;border-radius:0;background:transparent;white-space:nowrap;text-align:center;text-shadow:0 0 5px rgba(220,216,220,1),0 0 10px rgba(220,216,220,.96)}.lesson-concept-visual{position:absolute;inset:0;width:100%;height:100%;min-width:0;overflow:hidden;contain:layout paint style;background:linear-gradient(135deg,#334640,#62736f 55%,#71837d);color:#fff;text-align:right;isolation:isolate}.lesson-concept-visual .visual-grid{position:absolute;inset:0;opacity:.17;background-image:linear-gradient(rgba(232,181,167,.55) 1px,transparent 1px),linear-gradient(90deg,rgba(232,181,167,.55) 1px,transparent 1px);background-size:22px 22px;-webkit-mask-image:linear-gradient(to bottom,transparent,#000 28%,#000);mask-image:linear-gradient(to bottom,transparent,#000 28%,#000)}.lesson-concept-visual .visual-tag{position:absolute;z-index:3;top:82px;right:24px;max-width:calc(100% - 48px);margin:0;padding:5px 10px;border:1px solid rgba(255,255,255,.24);border-radius:999px;background:#ffffff21;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-size:.7rem;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.lesson-concept-visual h2{position:absolute;z-index:3;top:119px;right:24px;left:24px;max-height:2.8em;margin:0;overflow:hidden;font-size:clamp(1.35rem,6vw,2rem);line-height:1.35;letter-spacing:0;text-wrap:balance;unicode-bidi:plaintext}.lesson-concept-visual .visual-detail{position:absolute;z-index:3;top:188px;right:24px;left:24px;max-height:3.4em;margin:0;overflow:hidden;color:#ffffffc7;font-size:.78rem;line-height:1.7;unicode-bidi:plaintext}.lesson-concept-visual svg{position:absolute;z-index:2;right:18px;bottom:25px;width:calc(100% - 36px);height:min(126px,30%);overflow:hidden}.lesson-concept-visual .trace-ghost{fill:none;stroke:#ffffff29;stroke-width:7;stroke-linecap:round;stroke-linejoin:round}.lesson-concept-visual .trace-live{fill:none;stroke:#e8b5a7;stroke-width:3.6;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:1;filter:drop-shadow(0 0 6px rgba(232,181,167,.75));animation:lesson-trace 4.8s linear infinite}.lesson-concept-visual .trace-head{filter:drop-shadow(0 0 4px rgba(255,255,255,.8))}.lesson-concept-visual small{position:absolute;z-index:3;right:24px;left:24px;bottom:10px;display:flex;align-items:center;gap:5px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;color:#ffffff94;font-size:.64rem}.lesson-concept-visual small i{width:7px;height:7px;flex:0 0 auto;border-radius:50%;background:var(--coral)}.lesson-concept-visual small b{margin-right:auto;white-space:nowrap}@keyframes lesson-trace{0%{stroke-dashoffset:1}to{stroke-dashoffset:0}}.concept-diagram{position:absolute;z-index:1;left:22px;top:44px;width:112px;height:112px;opacity:.94}.concept-diagram span{position:absolute;display:block}.concept-twelve_lead span,.concept-territories span{width:30px;height:30px;border:1px solid rgba(255,255,255,.4);border-radius:9px;background:#e8b5a72e}.concept-twelve_lead span:nth-child(1),.concept-territories span:nth-child(1){left:3px;top:3px}.concept-twelve_lead span:nth-child(2),.concept-territories span:nth-child(2){left:40px;top:3px}.concept-twelve_lead span:nth-child(3),.concept-territories span:nth-child(3){left:77px;top:3px}.concept-twelve_lead span:nth-child(4),.concept-territories span:nth-child(4){left:3px;top:40px}.concept-twelve_lead span:nth-child(5),.concept-territories span:nth-child(5){left:40px;top:40px}.concept-twelve_lead span:nth-child(6),.concept-territories span:nth-child(6){left:77px;top:40px}.concept-systematic span,.concept-report span{left:10px;width:92px;height:17px;border-radius:7px;background:#ffffff21;border-left:5px solid #e8b5a7}.concept-systematic span:nth-child(1),.concept-report span:nth-child(1){top:14px}.concept-systematic span:nth-child(2),.concept-report span:nth-child(2){top:42px;width:76px}.concept-systematic span:nth-child(3),.concept-report span:nth-child(3){top:70px;width:86px}.concept-ventricular_hypertrophy span,.concept-atrial_enlargement span,.concept-chest_pain span{border-radius:50%;border:2px solid rgba(255,255,255,.45);background:#db846e3d}.concept-ventricular_hypertrophy span:nth-child(1),.concept-atrial_enlargement span:nth-child(1),.concept-chest_pain span:nth-child(1){width:70px;height:70px;left:21px;top:21px}.concept-ventricular_hypertrophy span:nth-child(2),.concept-atrial_enlargement span:nth-child(2),.concept-chest_pain span:nth-child(2){width:38px;height:38px;left:37px;top:37px;animation:concept-pulse 2.4s ease-in-out infinite}.concept-tachy_algorithm span,.concept-brady_syncope span{width:22px;height:22px;border-radius:50%;background:#e8b5a7;box-shadow:0 0 0 7px #e8b5a726}.concept-tachy_algorithm span:nth-child(1),.concept-brady_syncope span:nth-child(1){left:12px;top:46px}.concept-tachy_algorithm span:nth-child(2),.concept-brady_syncope span:nth-child(2){left:46px;top:17px}.concept-tachy_algorithm span:nth-child(3),.concept-brady_syncope span:nth-child(3){left:79px;top:58px}.concept-tachy_algorithm:before,.concept-brady_syncope:before{content:"";position:absolute;left:24px;top:35px;width:70px;height:42px;border-top:2px solid rgba(255,255,255,.5);border-bottom:2px solid rgba(255,255,255,.5);transform:skewY(-18deg)}.concept-qt span,.concept-st_t span,.concept-stemi span,.concept-nstemi span,.concept-electrolytes span,.concept-pericarditis span{left:8px;top:52px;width:96px;height:3px;border-radius:3px;background:linear-gradient(90deg,transparent,#e8b5a7,transparent);animation:concept-scan 2.2s ease-in-out infinite}@keyframes concept-pulse{50%{transform:scale(1.22);background:#db846e80}}@keyframes concept-scan{50%{transform:translateY(-26px);opacity:.45}}@media(max-height:700px){.lesson-concept-visual .visual-tag{top:62px}.lesson-concept-visual h2{top:98px;font-size:1.35rem}.lesson-concept-visual .visual-detail{top:145px}.lesson-concept-visual svg{height:88px;bottom:24px}.concept-diagram{top:32px;transform:scale(.82);transform-origin:top left}}@media(prefers-reduced-motion:reduce){.lesson-concept-visual .trace-live,.concept-diagram span{animation:none;stroke-dashoffset:0}}.learn-screen,.test-screen{padding-bottom:120px}.flame{font-size:32px}.concept-twelve_lead,.concept-territories{width:138px;height:76px;display:grid;grid-template-columns:repeat(4,30px);grid-template-rows:repeat(3,20px);gap:6px}.concept-twelve_lead span,.concept-territories span{position:static;width:30px;height:20px;border-radius:6px}.concept-territories span{animation:concept-step 4.8s steps(1,end) infinite}.concept-territories span:nth-child(2){animation-delay:-1.2s}.concept-territories span:nth-child(3){animation-delay:-2.4s}.concept-territories span:nth-child(4){animation-delay:-3.6s}.concept-systematic span:nth-child(4),.concept-report span:nth-child(4){top:98px;width:68px}.concept-tachy_algorithm span:nth-child(4),.concept-brady_syncope span:nth-child(4){left:79px;top:17px}.concept-tachy_algorithm span,.concept-brady_syncope span{animation:concept-step 4.8s steps(1,end) infinite}.concept-tachy_algorithm span:nth-child(2),.concept-brady_syncope span:nth-child(2){animation-delay:-1.2s}.concept-tachy_algorithm span:nth-child(3),.concept-brady_syncope span:nth-child(3){animation-delay:-2.4s}.concept-tachy_algorithm span:nth-child(4),.concept-brady_syncope span:nth-child(4){animation-delay:-3.6s}@keyframes concept-step{0%,24%{background:#db846e;opacity:1}25%,to{background:#ffffff29;opacity:.65}}@media(prefers-reduced-motion:reduce){.lesson-concept-visual .trace-head{display:none}}.lesson-concept-visual{display:flex;flex-direction:column;padding:64px 20px 14px;gap:8px}.lesson-concept-visual .visual-heading{position:relative;z-index:3;flex:0 0 auto;min-width:0;text-align:center}.lesson-concept-visual .visual-tag{position:static;display:inline-block;max-width:100%;padding:4px 8px;font-size:9px;-webkit-backdrop-filter:none;backdrop-filter:none}.lesson-concept-visual h2{position:static;max-height:none;font-size:20px;line-height:1.45;margin-top:5px;text-wrap:balance}.lesson-concept-visual .visual-detail{position:static;max-height:none;font-size:11px;line-height:1.6;margin-top:3px}.lesson-concept-visual h2,.lesson-concept-visual .visual-detail{direction:rtl;unicode-bidi:isolate}.visual-stage{position:relative;flex:1;min-height:60px;overflow:hidden;display:flex;flex-direction:column;align-items:center}.lesson-concept-visual .lesson-diagram{position:static;width:100%;height:45%;min-height:0;flex:0 1 45%;overflow:hidden}.lesson-concept-visual .lesson-wave{position:static;width:100%;height:55%;min-height:0;flex:1;overflow:hidden;direction:ltr}.lesson-concept-visual .trace-ghost{stroke-width:2;filter:none}.lesson-concept-visual .trace-live{stroke-width:3;stroke-dasharray:none;stroke-dashoffset:0;filter:none;animation:lesson-sweep 4.8s linear infinite}.lesson-concept-visual .trace-head{filter:none}.lesson-concept-visual small{position:static;flex:0 0 auto;z-index:3;font-size:9px;min-width:0}@keyframes lesson-sweep{0%{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}@media(max-height:700px){.lesson-concept-visual{padding-top:60px;gap:4px}.lesson-concept-visual h2{font-size:17px}.lesson-concept-visual .visual-detail{font-size:10px}}@media(prefers-reduced-motion:reduce){.lesson-concept-visual .trace-live{animation:none;clip-path:none}}
