:root{--ink:#17221d;--muted:#68736d;--cream:#f6f3ea;--paper:#fffdf8;--green:#155c45;--mint:#dcece3;--gold:#d99d45;--line:#e2e1d9;--shadow:0 18px 50px rgba(34,53,44,.11)}*{box-sizing:border-box}body{margin:0;background:var(--cream);color:var(--ink);font-family:DM Sans,sans-serif}.app-shell{display:grid;grid-template-columns:255px 1fr;min-height:100vh}.sidebar{background:#143f32;color:#f8f6ee;padding:30px 22px 22px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:11px;color:inherit;text-decoration:none;font-family:Fraunces;font-size:21px}.brand strong{color:#9dd5b5}.brand-mark{width:35px;height:35px;border:1px solid #75a993;border-radius:50% 50% 45%;display:grid;place-items:center;font-style:italic}.new-session{margin:34px 0 27px;background:#f7f4e9;color:#183c31;border:0;border-radius:10px;padding:13px;text-align:left;font-weight:700;cursor:pointer}.new-session span{font-size:18px;margin-right:8px}.nav-label{font-size:10px;letter-spacing:1.7px;color:#8bb2a2;margin:0 0 9px 10px}.nav-item{border:0;background:none;color:#bfd1c9;display:flex;gap:12px;width:100%;padding:12px;border-radius:8px;font:500 14px inherit;cursor:pointer;text-align:left}.nav-item.active,.nav-item:hover{background:#235344;color:#fff}.course-card{width:100%;margin-top:auto;background:#1d4c3d;border:1px solid #376556;color:#fff;border-radius:12px;padding:13px;display:flex;gap:10px;align-items:center;text-align:left;cursor:pointer}.course-card:hover{background:#285a49}.course-icon{background:#eed5a3;color:#4d402b;width:37px;height:37px;display:grid;place-items:center;border-radius:8px;font-family:serif;font-size:20px}.course-card div:last-child{display:flex;flex-direction:column}.course-card small,.profile small{color:#9fb9ae;font-size:10px}.course-card strong{font-size:12px;margin:2px 0}.course-card span{font-size:11px;color:#cddbd5}.profile{display:flex;align-items:center;gap:9px;background:none;border:0;border-top:1px solid #376052;color:#fff;margin-top:18px;padding:18px 2px 0;text-align:left}.profile>span:nth-child(2){display:flex;flex-direction:column}.avatar{width:34px;height:34px;background:#d4a052;border-radius:50%;display:grid;place-items:center;color:#263f36;font-weight:700;font-size:11px}.dots{margin-left:auto}.topbar{height:79px;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 42px;background:#f6f3eaeb;position:relative;z-index:5}.course-picker{border:0;background:none;display:flex;gap:10px;align-items:center;color:var(--ink);cursor:pointer;text-align:left}.course-picker span:nth-child(2){display:flex;flex-direction:column}.course-picker small{font-size:9px;text-transform:uppercase;color:var(--muted);letter-spacing:1px}.course-picker strong{font-size:13px}.mini-icon{background:#e7d6b4;width:32px;height:32px;border-radius:7px;display:grid;place-items:center;font-family:serif}.top-actions{margin-left:auto;display:flex;align-items:center;gap:20px}.streak{font-size:12px;color:var(--muted)}.pathway-edit{border:0;background:transparent;color:var(--green);font:600 11px inherit;cursor:pointer}.icon-btn{border:1px solid var(--line);background:var(--paper);width:36px;height:36px;border-radius:50%;cursor:pointer}.menu-btn{display:none}.picker-panel{display:none;position:absolute;top:67px;left:40px;width:330px;padding:18px;background:var(--paper);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}.picker-panel.open{display:grid;gap:12px}.picker-panel label{display:grid;gap:5px;font-size:11px;color:var(--muted);font-weight:600}.picker-panel select{padding:10px;border:1px solid var(--line);border-radius:7px;background:#fff}.picker-panel button,.upload-zone button{background:var(--green);color:#fff;border:0;border-radius:8px;padding:11px;font-weight:700;cursor:pointer}.view{display:none;max-width:1060px;margin:0 auto;padding:64px 60px 35px}.view.active{display:block}.lesson-header{display:flex;align-items:flex-end;position:relative;border-bottom:1px solid var(--line);padding-bottom:33px}.lesson-header>div:first-child{flex:1}.eyebrow{font-size:10px;letter-spacing:2px;font-weight:700;color:#875}.view h1{font:600 clamp(32px,4vw,48px)/1.1 "Fraunces";margin:11px 0 12px}.view h1 em{color:var(--green);font-style:italic}.lesson-header p{color:var(--muted);font-size:14px}.voice-card{display:flex;align-items:center;gap:11px;background:var(--paper);border:1px solid var(--line);padding:10px 13px;border-radius:11px;box-shadow:0 6px 20px #0000000a;cursor:pointer}.voice-card>span:nth-child(2){display:flex;flex-direction:column;text-align:left}.voice-card small{font-size:9px;color:var(--muted)}.voice-card strong{font-size:12px}.voice-orb{background:#1b654d;width:37px;height:37px;border-radius:50%;display:flex;align-items:center;justify-content:center;gap:2px}.voice-orb i{width:2px;background:#cbe4d7;border-radius:2px;height:9px}.voice-orb i:nth-child(2){height:17px}.voice-orb i:nth-child(3){height:13px}.voice-menu{display:none;position:absolute;right:0;top:88px;background:var(--paper);padding:8px;border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);width:235px;z-index:4}.voice-menu.open{display:block}.voice-option{display:block;border:0;background:none;width:100%;padding:10px;border-radius:7px;text-align:left;cursor:pointer}.voice-option:hover{background:var(--mint)}.voice-option strong,.voice-option small{display:block}.voice-option small{color:var(--muted)}.chat{padding:33px 0;min-height:330px;max-height:47vh;overflow-y:auto}.message{display:flex;gap:12px;margin-bottom:18px}.tutor-avatar{width:34px;height:34px;flex:0 0 auto;background:var(--green);color:#fff;border-radius:50% 50% 44%;display:grid;place-items:center;font:italic 600 15px Fraunces}.bubble{background:var(--paper);border:1px solid var(--line);border-radius:4px 14px 14px;padding:18px 20px;max-width:690px;box-shadow:0 5px 18px #1e32280a}.bubble p{font-size:14px;line-height:1.65;margin:5px 0 10px}.speaker{font-size:9px;letter-spacing:1.3px;color:#7b897f;font-weight:700}.listen-btn{border:0;background:none;color:var(--green);padding:3px 0;font-weight:700;font-size:11px;cursor:pointer}.user-message{justify-content:flex-end}.user-message .bubble{background:#e2eee7;border-radius:14px 4px 14px 14px}.suggestions{display:flex;gap:10px;margin-left:46px}.suggestions button{background:transparent;border:1px solid #d4d7cf;border-radius:9px;padding:10px 12px;color:#4c5a53;font:500 11px inherit;cursor:pointer}.suggestions span{margin-left:9px;color:var(--green)}.composer-wrap{position:sticky;bottom:0;background:linear-gradient(transparent,var(--cream) 12%);padding-top:15px}.composer{background:var(--paper);border:1px solid #ced4ca;border-radius:14px;padding:15px;box-shadow:0 8px 27px #21342a12}.composer:focus-within{border-color:#69927f;box-shadow:0 0 0 3px #155c4514}.composer textarea{width:100%;border:0;background:none;resize:none;outline:0;font:14px inherit;min-height:28px;max-height:110px}.composer-actions{display:flex;align-items:center;color:#8a948e;font-size:10px}.composer-actions button{border:0;cursor:pointer}.attach-btn{background:#edf0eb;width:29px;height:29px;border-radius:6px;margin-right:7px}.spacer{flex:1}.mic-btn,.send-btn{width:34px;height:34px;border-radius:50%;margin-left:8px}.mic-btn{background:#e4ece7;color:var(--green)}.mic-btn.listening{background:#f1c9be;animation:pulse 1s infinite}.send-btn{background:var(--green);color:#fff;font-size:18px}.hint{text-align:center;color:#8e958f;font-size:9px}.hint kbd{border:1px solid #cccfc9;border-radius:4px;padding:1px 4px;background:#faf9f5}.library-view,.papers-view,.progress-view{padding-top:70px}.subject-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:32px}.subject-card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:22px;cursor:pointer;transition:.2s}.subject-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.subject-card .subject-icon{font-size:27px}.subject-card h3{margin:24px 0 5px;font-family:Fraunces}.subject-card p{font-size:12px;color:var(--muted)}.subject-card span{font-size:10px;color:var(--green);font-weight:700}.paper-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;margin-top:35px}.upload-zone{border:1.5px dashed #a9b6ad;border-radius:16px;padding:50px 35px;text-align:center;background:#ffffff61}.upload-icon{font-size:28px;color:var(--green)}.upload-zone h2,.paper-list h2,.progress-card h2{font-family:Fraunces}.upload-zone p{font-size:13px;line-height:1.6;color:var(--muted)}.paper-list{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:22px}.paper-item{padding:14px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.paper-item strong,.paper-item small{display:block}.paper-item small{color:var(--muted);margin-top:4px}.paper-item button{border:0;background:var(--mint);color:var(--green);border-radius:7px;padding:7px 10px;cursor:pointer}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:30px 0}.stats article,.progress-card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:22px}.stats span,.stats small{display:block;color:var(--muted);font-size:11px}.stats strong{font:600 32px Fraunces;display:block;margin:12px 0;color:var(--green)}.progress-row{display:grid;grid-template-columns:140px 1fr 40px;align-items:center;gap:12px;margin:16px 0;font-size:12px}.bar{height:7px;background:#e7e9e4;border-radius:4px;overflow:hidden}.bar i{display:block;height:100%;background:var(--green);border-radius:4px}.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:#172b23;color:#fff;padding:11px 17px;border-radius:9px;font-size:12px;opacity:0;pointer-events:none;transition:.25s;z-index:30}.toast.show{opacity:1;transform:translate(-50%)}@keyframes pulse{50%{transform:scale(1.08)}}.onboarding{position:fixed;inset:0;z-index:100;background:#f3f0e7;display:grid;grid-template-rows:auto 1fr auto;padding:25px 34px;overflow:auto}.onboarding.hidden{display:none}.onboarding-brand{display:flex;align-items:center;gap:10px;color:var(--green);font:21px Fraunces}.onboarding-brand strong{color:#8a6236}.onboarding-brand .brand-mark{border-color:#79a18f}.onboarding-panel{width:min(870px,100%);margin:15px auto;background:var(--paper);border:1px solid #deded5;border-radius:21px;box-shadow:0 25px 70px #23352b1a;padding:26px 42px 24px;align-self:center}.onboarding-progress{display:flex;align-items:flex-end;gap:22px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:28px}.progress-copy{display:flex;flex-direction:column;min-width:155px}.progress-copy span:first-child{color:#927c58;font-size:9px;letter-spacing:1.6px;font-weight:700}.progress-copy span:last-child{font-size:12px;font-weight:700;margin-top:3px}.progress-track{height:4px;background:#e6e6df;border-radius:4px;flex:1;overflow:hidden}.progress-track i{display:block;height:100%;width:25%;background:var(--green);transition:.3s}.onboarding-step{display:none;min-height:380px}.onboarding-step.active{display:block}.onboarding-step h1{font:600 36px/1.1 Fraunces;margin:8px 0}.onboarding-step h1 em{color:var(--green)}.step-intro{color:var(--muted);font-size:13px;margin:0 0 20px}.curriculum-search{height:45px;border:1px solid #d6d8d1;border-radius:10px;background:#fff;display:flex;align-items:center;padding:0 13px;gap:9px}.curriculum-search:focus-within{border-color:#6c9683;box-shadow:0 0 0 3px #155c4512}.curriculum-search input{border:0;outline:0;width:100%;font:13px inherit;background:none}.region-filters{display:flex;gap:7px;margin:13px 0;overflow-x:auto}.region-filter{border:1px solid var(--line);background:#fff;border-radius:20px;padding:6px 11px;font:600 10px inherit;white-space:nowrap;cursor:pointer}.region-filter.active{background:var(--green);border-color:var(--green);color:#fff}.choice-grid{display:grid;gap:10px;max-height:245px;overflow-y:auto;padding:2px}.curriculum-grid{grid-template-columns:repeat(3,1fr)}.choice-card{border:1px solid var(--line);background:#fff;border-radius:11px;padding:14px;text-align:left;cursor:pointer;min-height:75px;position:relative;transition:.15s}.choice-card:hover{border-color:#91a99d;transform:translateY(-1px)}.choice-card.selected{border:1.5px solid var(--green);background:#edf5f0;box-shadow:0 0 0 2px #155c4514}.choice-card strong,.choice-card small{display:block}.choice-card strong{font:600 13px inherit;padding-right:16px}.choice-card small{font-size:10px;color:var(--muted);margin-top:4px;line-height:1.35}.choice-card.selected:after{content:"✓";position:absolute;right:10px;top:9px;color:var(--green);font-weight:700}.level-grid{grid-template-columns:repeat(3,1fr);max-height:none}.level-grid .choice-card{min-height:88px;display:flex;flex-direction:column;justify-content:center}.back-step{border:0;background:none;color:var(--green);padding:0;margin-bottom:15px;font:600 11px inherit;cursor:pointer}.subject-search-wrap{display:flex;align-items:center;gap:15px;margin-bottom:14px}.subject-search-wrap label{flex:1}.subject-search-wrap>span{font-size:11px;color:var(--green);font-weight:700;white-space:nowrap}.course-choice-grid{grid-template-columns:repeat(3,1fr);max-height:270px}.course-choice-grid .choice-card{min-height:57px}.goal-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.goal-option{border:1px solid var(--line);background:#fff;border-radius:11px;padding:14px 16px;text-align:left;cursor:pointer;position:relative}.goal-option:hover{border-color:#91a99d}.goal-option.selected{border-color:var(--green);background:#edf5f0}.goal-option strong,.goal-option small{display:block}.goal-option strong{font-size:13px}.goal-option small{font-size:10px;color:var(--muted);margin-top:3px}.goal-option.selected:after{content:"✓";position:absolute;right:14px;top:14px;color:var(--green);font-weight:700}.custom-goal{display:grid;gap:6px;margin-top:15px}.custom-goal span{font-size:10px;color:var(--muted);font-weight:700}.custom-goal input{border:1px solid var(--line);border-radius:9px;padding:11px 13px;font:12px inherit;outline:0}.custom-goal input:focus{border-color:#6c9683}.onboarding-footer{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);margin-top:23px;padding-top:18px}.onboarding-footer>span{font-size:10px;color:var(--muted)}.onboarding-footer button{background:var(--green);color:#fff;border:0;border-radius:9px;padding:11px 17px;font:700 12px inherit;cursor:pointer}.onboarding-footer button:disabled{opacity:.35;cursor:not-allowed}.onboarding-footer button span{margin-left:12px}.onboarding-footnote{text-align:center;color:#839088;font-size:9px;margin:7px}.empty-results{grid-column:1/-1;text-align:center;color:var(--muted);padding:30px;font-size:12px}@media(max-width:800px){.app-shell{display:block}.sidebar{position:fixed;z-index:20;width:255px;transform:translate(-100%);transition:.25s}.sidebar.open{transform:none}.menu-btn{display:block;margin-right:10px}.topbar{padding:0 16px}.streak,.pathway-edit{display:none}.view{padding:38px 20px 25px}.lesson-header{align-items:flex-start;flex-direction:column}.voice-card{margin-top:15px}.voice-menu{left:0;right:auto;top:190px}.suggestions{margin-left:0;overflow-x:auto}.suggestions button{white-space:nowrap}.subject-grid,.stats{grid-template-columns:1fr 1fr}.paper-layout{grid-template-columns:1fr}.chat{max-height:none}.course-picker strong{max-width:190px;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.onboarding{padding:18px}.onboarding-panel{padding:24px}.curriculum-grid,.course-choice-grid{grid-template-columns:1fr 1fr}.onboarding-step{min-height:410px}}@media(max-width:480px){.subject-grid,.stats{grid-template-columns:1fr}.top-actions .icon-btn{display:none}.view h1{font-size:36px}.composer-wrap{position:static}.onboarding{padding:13px}.onboarding-brand{font-size:18px}.onboarding-panel{padding:20px 16px;border-radius:15px;align-self:start}.onboarding-progress{margin-bottom:20px}.onboarding-step h1{font-size:30px}.curriculum-grid,.course-choice-grid,.level-grid,.goal-grid{grid-template-columns:1fr}.choice-grid{max-height:300px}.subject-search-wrap{align-items:stretch;flex-direction:column;gap:7px}.onboarding-footer>span{display:none}.onboarding-footer{justify-content:flex-end}}:root,[data-theme=forest]{--ink:#17221d;--muted:#68736d;--cream:#f6f3ea;--paper:#fffdf8;--green:#155c45;--mint:#dcece3;--gold:#d99d45;--line:#e2e1d9;--sidebar:#143f32;--hero:#102f26;--bubble:#e2eee7;--glow:#43d6a4;--danger:#b94c43;--success:#1e7a54}[data-theme=midnight]{--ink:#e9edf8;--muted:#9ca6bb;--cream:#0d1220;--paper:#171d2d;--green:#8b9cff;--mint:#252e4a;--gold:#f2b765;--line:#2e374b;--sidebar:#090d17;--hero:#090d17;--bubble:#25304d;--glow:#8b9cff;--danger:#ff7d75;--success:#56d29a}[data-theme=sunrise]{--ink:#35241e;--muted:#836d65;--cream:#fff5eb;--paper:#fffaf4;--green:#c44e33;--mint:#fee4d6;--gold:#e89c38;--line:#ead9cf;--sidebar:#613426;--hero:#542b21;--bubble:#ffe5d7;--glow:#ff896d;--danger:#b53f38;--success:#3d8c5d}[data-theme=ocean]{--ink:#152733;--muted:#637681;--cream:#eff7f8;--paper:#fbffff;--green:#087d86;--mint:#d7eef0;--gold:#e1a244;--line:#d7e4e5;--sidebar:#0b4650;--hero:#073b44;--bubble:#d7eef0;--glow:#34d9e5;--danger:#be4e4e;--success:#15846a}[data-theme=mono]{--ink:#171717;--muted:#6d6d6d;--cream:#f2f2ef;--paper:#fff;--green:#1d1d1d;--mint:#e7e7e4;--gold:#777;--line:#d7d7d2;--sidebar:#151515;--hero:#111;--bubble:#e9e9e6;--glow:#fff;--danger:#a42f2f;--success:#2d6f45}.hidden,.marketing-site.hidden,.app-shell.hidden{display:none!important}.sidebar{background:var(--sidebar)}.user-message .bubble{background:var(--bubble)}.topbar{background:color-mix(in srgb,var(--cream) 94%,transparent)}.marketing-site{background:#f8f5ed;color:#14251f;min-height:100vh}.marketing-nav{height:76px;display:flex;align-items:center;width:min(1220px,calc(100% - 52px));margin:auto;border-bottom:1px solid #dddcd4}.marketing-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#173b30;font:21px Fraunces}.marketing-brand strong{color:#9b6633}.marketing-brand .brand-mark{border-color:#5b8a77}.marketing-nav nav{display:flex;gap:30px;margin:auto}.marketing-nav nav a,.marketing-footer a{font-size:12px;text-decoration:none;color:#66726c;font-weight:600}.marketing-nav>div{display:flex;gap:10px}.text-button,.primary-button,.hero-primary,.hero-secondary{border:0;border-radius:8px;padding:11px 17px;font:700 12px DM Sans;cursor:pointer}.text-button{background:none;color:#244c40}.primary-button,.hero-primary{background:#135b44;color:#fff}.marketing-main{overflow:hidden}.hero-section{width:min(1160px,calc(100% - 52px));min-height:610px;margin:auto;display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:65px;padding:65px 0 75px}.hero-kicker,.section-kicker{font-size:9px;font-weight:700;letter-spacing:2px;color:#927047}.hero-kicker i{display:inline-block;width:7px;height:7px;border-radius:50%;background:#2a916d;margin-right:7px;box-shadow:0 0 0 4px #d9ebe3}.hero-copy h1{font:600 clamp(47px,5vw,69px)/.99 "Fraunces";letter-spacing:-2px;margin:18px 0 22px}.hero-copy h1 em,.how-section h2 em,.pricing-section h2 em{color:#176147}.hero-copy>p{color:#64716b;font-size:16px;line-height:1.65;max-width:530px}.hero-actions{display:flex;gap:11px;margin:29px 0 12px}.hero-primary{padding:14px 20px;font-size:13px;box-shadow:0 9px 20px #145b442e}.hero-primary span{margin-left:14px}.hero-secondary{background:#fff;border:1px solid #d7d8d1;color:#30483f}.hero-copy>small{font-size:10px;color:#8b928f}.hero-product-card{background:#fffdf9;border:1px solid #d9dcd4;border-radius:17px;box-shadow:0 30px 65px #1e332a26;overflow:hidden;transform:rotate(1deg)}.mini-window-bar{height:42px;background:#173f33;display:flex;align-items:center;gap:6px;padding:0 15px}.mini-window-bar>span{width:6px;height:6px;border-radius:50%;background:#79968b}.mini-window-bar small{margin-left:auto;color:#9db6ac;font-size:8px;letter-spacing:1.5px}.hero-session{padding:23px 25px}.hero-session-top{display:flex;justify-content:space-between;margin-bottom:23px}.demo-tag{background:#eee8da;padding:6px 9px;border-radius:5px;font-size:8px;font-weight:700;color:#655941}.live-tag{color:#258261;font-size:8px;font-weight:700}.demo-tutor{display:flex;gap:10px;margin:13px 0}.demo-a{flex:0 0 29px;width:29px;height:29px;background:#145d45;color:#fff;display:grid;place-items:center;border-radius:50%;font:italic 13px Fraunces}.demo-tutor>div{background:#f6f4ed;border:1px solid #e7e3da;padding:12px 14px;border-radius:3px 11px 11px;max-width:395px}.demo-tutor small{font-size:7px;letter-spacing:1px;color:#678076}.demo-tutor p,.demo-answer p{font-size:12px;line-height:1.55;margin:4px 0}.demo-answer{background:#dcece3;border-radius:10px 3px 10px 10px;padding:9px 13px;width:max-content;max-width:75%;margin-left:auto}.demo-wave{display:flex;align-items:center;gap:2px;height:20px}.demo-wave i{display:block;width:2px;height:6px;background:#2a8766;border-radius:2px;animation:wave .9s infinite alternate}.demo-wave i:nth-child(2n){height:14px;animation-delay:.2s}.demo-wave i:nth-child(3n){height:10px;animation-delay:.4s}.hero-goal{border-top:1px solid #e5e2d9;padding:15px 24px;display:flex;align-items:center;gap:10px}.hero-goal>span{width:30px;height:30px;border-radius:50%;background:#f0dfbd;display:grid;place-items:center}.hero-goal>div{display:flex;flex-direction:column}.hero-goal small{font-size:7px;letter-spacing:1px;color:#7a847f}.hero-goal strong{font-size:11px}.hero-goal b{margin-left:auto;color:#247758;background:#e2f0e9;padding:5px 8px;border-radius:5px;font-size:8px}.trust-strip{background:#173f33;color:#fff;text-align:center;padding:22px}.trust-strip>span{display:block;color:#90aa9f;font-size:8px;letter-spacing:2px;margin-bottom:17px}.trust-strip>div{display:flex;align-items:center;justify-content:center;gap:42px;flex-wrap:wrap}.trust-strip b{font:600 15px Fraunces;color:#e2e9e5}.how-section,.pricing-section,.faq-section{width:min(1120px,calc(100% - 52px));margin:auto;padding:95px 0;text-align:center}.how-section h2,.pricing-section h2,.faq-section h2{font:600 43px Fraunces;margin:9px 0 45px}.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#dedfd7;border:1px solid #dedfd7;border-radius:14px;overflow:hidden;text-align:left}.how-grid article{background:#fffdf9;padding:32px;position:relative}.how-grid article>span{position:absolute;right:24px;top:23px;font:italic 19px Fraunces;color:#c7c9c2}.how-icon{width:43px;height:43px;display:grid;place-items:center;border-radius:10px;background:#e2eee7;color:#176147;font-size:19px}.how-grid h3{font:600 18px Fraunces;margin:24px 0 9px}.how-grid p{font-size:12px;color:#6f7874;line-height:1.65}.pricing-section{border-top:1px solid #e1e1da}.pricing-section h2{margin-bottom:9px}.pricing-intro{color:#747e79;font-size:13px}.billing-toggle{display:inline-flex;background:#ebe9e1;padding:3px;border-radius:8px;margin:24px 0 28px}.billing-toggle button{border:0;background:transparent;padding:8px 13px;border-radius:6px;font:700 10px inherit;color:#69736e;cursor:pointer}.billing-toggle button.active{background:#fff;color:#173d31;box-shadow:0 2px 5px #0000000f}.billing-toggle span{color:#20825e;font-size:8px;margin-left:4px}.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;text-align:left;align-items:stretch}.price-card{background:#fffdf9;border:1px solid #dcddd5;border-radius:13px;padding:24px 20px;position:relative}.price-card.popular{border:1.5px solid #176147;box-shadow:0 12px 30px #1761471f;transform:translateY(-5px)}.popular-label{position:absolute;top:-11px;left:50%;transform:translate(-50%);background:#176147;color:#fff;border-radius:10px;padding:4px 12px;font-size:7px;letter-spacing:1px;white-space:nowrap}.plan-name{font-size:8px;letter-spacing:1.5px;color:#806d51;font-weight:700}.price-card h3{font-family:Fraunces;margin:16px 0 3px}.price-card h3 sup{font:600 15px DM Sans}.price-card h3 b{font-size:40px}.price-card h3 small{font:10px DM Sans;color:#838b87}.price-card>p{font-size:10px;color:#7a837f;height:22px}.price-card>button{width:100%;border:1px solid #cfd2cb;background:#fff;color:#194a3b;border-radius:7px;padding:10px;font:700 10px inherit;cursor:pointer;margin:10px 0 13px}.price-card.popular>button{background:#176147;color:#fff;border-color:#176147}.price-card ul{list-style:none;padding:12px 0 0;margin:0;border-top:1px solid #e6e5de}.price-card li{font-size:10px;margin:10px 0}.price-card li:before{content:"✓";color:#1d805c;margin-right:7px;font-weight:700}.price-card li.muted-feature{color:#aaa}.price-card li.muted-feature:before{content:"–";color:#aaa}.topup-note{font-size:10px!important;margin-top:25px}.faq-section{border-top:1px solid #e1e1da;text-align:left}.faq-section h2{text-align:center}.faq-section>.section-kicker{display:block;text-align:center}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.faq-grid details{background:#fffdf9;border:1px solid #dedfd8;border-radius:10px;padding:17px}.faq-grid summary{cursor:pointer;font:600 13px Fraunces}.faq-grid p{font-size:11px;color:#6e7873;line-height:1.6}.final-cta{background:#153f33;color:#fff;text-align:center;padding:75px 25px}.final-cta .brand-mark{margin:auto;color:#9ad0b8;border-color:#6d9887}.final-cta h2{font:600 41px/1.1 Fraunces;margin:18px 0 10px}.final-cta p{color:#afc4bb;font-size:13px}.final-cta button{background:#f5f0e4;color:#174335;border:0;border-radius:8px;padding:13px 19px;font-weight:700;margin:9px;cursor:pointer}.final-cta button span{margin-left:15px}.final-cta small{display:block;color:#8ca79c;font-size:8px}.marketing-footer{display:flex;align-items:center;width:min(1160px,calc(100% - 52px));margin:auto;padding:23px 0}.marketing-footer>span{margin:auto;color:#8c9490;font-size:8px}.marketing-footer>div{display:flex;gap:17px}.marketing-footer .marketing-brand{font-size:16px}.marketing-footer .brand-mark{width:28px;height:28px}.auth-modal,.voice-settings{position:fixed;inset:0;z-index:150;background:#081510a8;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:grid;place-items:center;padding:20px}.auth-card,.voice-settings-card{position:relative;width:min(430px,100%);max-height:calc(100vh - 40px);overflow:auto;background:#fffdf9;border-radius:17px;padding:31px;box-shadow:0 30px 80px #0000004d}.auth-card>.marketing-brand{justify-content:center;margin-bottom:26px}.modal-close{position:absolute;right:15px;top:13px;border:0;background:none;font-size:23px;color:#818985;cursor:pointer}.auth-card>.section-kicker{display:block;text-align:center}.auth-card h2,.voice-settings-card h2{font:600 30px Fraunces;text-align:center;margin:7px}.auth-card>p,.voice-settings-card>p{text-align:center;color:#77807c;font-size:11px;line-height:1.5}.google-button,.auth-submit{width:100%;border:1px solid #d7d8d1;background:#fff;border-radius:8px;padding:11px;font-weight:700;cursor:pointer;margin-top:13px}.google-button span{font:700 16px serif;color:#4285f4;margin-right:8px}.auth-divider{border-top:1px solid #e1e1db;text-align:center;margin:23px 0 13px;height:1px}.auth-divider span{position:relative;top:-8px;background:#fffdf9;padding:0 8px;color:#969c98;font-size:8px}.auth-card form label{display:grid;gap:5px;font-size:9px;font-weight:700;color:#56645e;margin:11px 0}.auth-card input{border:1px solid #d8dad3;border-radius:8px;padding:11px;font:12px inherit;outline:0}.auth-card input:focus{border-color:#4d8a72}.auth-submit{background:#155c45;color:#fff;border-color:#155c45}.auth-submit span{float:right}.auth-card>small{display:block;text-align:center;color:#929995;font-size:8px;margin:12px}.auth-switch{display:block;margin:auto;border:0;background:none;color:#6c7671;font-size:10px;cursor:pointer}.auth-switch strong{color:#155c45}.google-auth-wrap{display:grid;min-height:58px;place-items:center;margin-top:16px}.google-auth-wrap.loading{opacity:.65;pointer-events:none}.google-auth-wrap iframe{max-width:100%}.google-auth-wrap>small{margin-top:7px;color:#7f8984;font-size:8px;text-align:center}.google-auth-wrap>small:empty{display:none}.theme-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:28px}.theme-option{border:1px solid var(--line);background:var(--paper);border-radius:12px;padding:9px;text-align:left;cursor:pointer;position:relative}.theme-option.selected{border:2px solid var(--green);padding:8px}.theme-option.selected:after{content:"✓";position:absolute;right:14px;top:14px;background:var(--green);color:#fff;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:10px}.theme-preview{height:105px;border-radius:8px;padding:10px;background:var(--preview-bg);overflow:hidden}.theme-preview i{display:block;width:43%;height:6px;border-radius:4px;background:var(--preview-accent);margin-bottom:8px}.theme-preview i:nth-child(2){width:80%;background:var(--preview-surface);height:35px}.theme-preview i:nth-child(3){width:63%;margin-left:auto;background:var(--preview-accent);opacity:.55;height:18px}.theme-option strong,.theme-option small{display:block}.theme-option strong{font-size:11px;margin:9px 2px 2px}.theme-option small{font-size:8px;color:var(--muted);margin-left:2px}.voice-settings-card{width:min(560px,100%);color:#17221d}.voice-settings-card h2{text-align:left;margin:7px 0}.voice-settings-card>p{text-align:left}.recommended-voice{display:flex;align-items:center;gap:13px;width:100%;border:1.5px solid #176147;background:#edf5f0;border-radius:12px;padding:14px;text-align:left;cursor:pointer;margin:20px 0 10px}.voice-play{width:36px;height:36px;border-radius:50%;background:#176147;color:#fff;display:grid;place-items:center}.recommended-voice>span:nth-child(2){display:flex;flex-direction:column}.recommended-voice small{color:#9b6b34;font-size:7px;letter-spacing:1.3px}.recommended-voice strong{font:600 16px Fraunces}.recommended-voice em{font-style:normal;color:#727d78;font-size:9px}.recommended-voice b{margin-left:auto;color:#176147}.expand-voices{border:0;background:none;color:#176147;font:700 10px inherit;padding:8px 0;cursor:pointer}.expand-voices span{margin-left:5px}.openai-voice-grid{display:none;grid-template-columns:repeat(3,1fr);gap:8px;margin:9px 0 17px}.openai-voice-grid.open{display:grid}.openai-voice{border:1px solid #dedfd8;background:#fff;border-radius:9px;padding:10px;text-align:left;cursor:pointer}.openai-voice.selected{border-color:#176147;background:#edf5f0}.openai-voice strong,.openai-voice small{display:block}.openai-voice strong{text-transform:capitalize}.openai-voice small{color:#7f8884;font-size:8px;margin-top:3px}.save-voice{width:100%;border:0;background:#176147;color:#fff;border-radius:8px;padding:11px;font-weight:700;cursor:pointer}.ai-disclosure{display:block;text-align:center;color:#8d9491;font-size:8px;margin-top:10px}.voice-settings-card{width:min(680px,calc(100vw - 30px));max-height:min(820px,calc(100vh - 32px));overflow:auto;padding:27px}.voice-settings-card>p{max-width:590px;line-height:1.6}.recommended-voice{align-items:flex-start;margin-top:18px;padding:16px;transition:border-color .18s,background .18s,transform .18s}.recommended-voice:hover,.openai-voice:hover{transform:translateY(-1px);border-color:#176147}.recommended-voice>span:nth-child(2){flex:1;min-width:0;gap:3px}.recommended-voice q,.openai-voice q{display:block;margin:4px 0 0;color:#52615a;font-size:9px;line-height:1.45;quotes:none}.recommended-voice q:before,.recommended-voice q:after,.openai-voice q:before,.openai-voice q:after{content:none}.recommended-voice b{align-self:center}.voice-preview-status{position:relative;min-height:29px;margin:4px 0 6px;padding:8px 10px 8px 28px;border-radius:8px;background:#f3f4ef;color:#65716b;font-size:9px;line-height:1.35}.voice-preview-status:before{content:"♪";position:absolute;left:10px;top:7px;color:#176147;font-weight:800}.voice-preview-status.loading:before{content:"";width:9px;height:9px;top:8px;border:2px solid #b8d4ca;border-top-color:#176147;border-radius:50%;animation:voice-spin .7s linear infinite}.voice-preview-status.playing{background:#e8f4ee;color:#176147}.voice-preview-status.ready{background:#f0f4ef}.voice-preview-status.error{background:#fff0ed;color:#a34232}.voice-preview-status.error:before{content:"!"}.openai-voice-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.openai-voice{display:flex;align-items:flex-start;gap:9px;min-height:112px;padding:12px;transition:border-color .18s,background .18s,transform .18s}.openai-voice>span:last-child{display:flex;flex:1;min-width:0;flex-direction:column}.voice-card-play{flex:0 0 27px;width:27px;height:27px;border-radius:50%;display:grid;place-items:center;background:#edf5f0;color:#176147;font-size:10px}.openai-voice.selected .voice-card-play{background:#176147;color:#fff}.openai-voice strong{font-size:11px}.openai-voice small{color:#9b6b34;font-weight:700;letter-spacing:.25px}.openai-voice em{display:block;margin-top:3px;color:#68746e;font-size:8px;font-style:normal;line-height:1.35}.save-voice{margin-top:2px;padding:12px}@keyframes voice-spin{to{transform:rotate(360deg)}}@media(max-width:950px){.marketing-nav nav{display:none}.hero-section{grid-template-columns:1fr;padding-top:55px}.hero-copy{text-align:center}.hero-copy>p{margin-left:auto;margin-right:auto}.hero-actions{justify-content:center}.hero-product-card{width:min(650px,100%);margin:auto}.pricing-grid{grid-template-columns:1fr 1fr}.theme-grid{grid-template-columns:repeat(3,1fr)}}.voice-settings-card{padding:22px 17px}.recommended-voice{padding:13px}.openai-voice{min-height:0}.subject-folder-view{max-width:1130px;padding-top:38px}.folder-back{border:0;background:none;color:var(--green);font:700 10px inherit;padding:0;cursor:pointer}.folder-heading{display:flex;align-items:flex-end;border-bottom:1px solid var(--line);padding:25px 0 26px}.folder-heading>div{flex:1}.folder-heading h1{margin:6px 0 4px}.folder-heading p{margin:0;color:var(--muted);font-size:12px}.folder-upload{background:var(--green);color:#fff;border:0;border-radius:9px;padding:12px 16px;font:700 11px inherit;cursor:pointer}.memory-hero{background:linear-gradient(135deg,var(--sidebar),color-mix(in srgb,var(--sidebar) 82%,var(--green)));color:#fff;border-radius:16px;padding:23px 25px;margin:24px 0;box-shadow:0 14px 34px color-mix(in srgb,var(--sidebar) 18%,transparent)}.memory-heading{display:flex;align-items:center;gap:12px}.memory-icon{width:38px;height:38px;border-radius:10px;background:color-mix(in srgb,var(--glow) 18%,transparent);border:1px solid color-mix(in srgb,var(--glow) 35%,transparent);display:grid;place-items:center;color:var(--glow)}.memory-heading>div{flex:1}.memory-heading>div>span{font-size:7px;letter-spacing:1.6px;color:color-mix(in srgb,var(--glow) 80%,white)}.memory-heading h2{font:600 20px Fraunces;margin:3px 0}.memory-heading p{font-size:9px;color:#aebdb7;margin:0}.memory-updated{font-size:8px;color:#9bada6;border:1px solid rgba(255,255,255,.15);padding:6px 8px;border-radius:12px}.weak-topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-top:19px}.weak-topic{background:#ffffff12;border:1px solid rgba(255,255,255,.11);border-radius:10px;padding:13px}.weak-topic-top{display:flex;justify-content:space-between;align-items:center}.weak-topic-top strong{font-size:11px}.weak-topic-top b{font-size:8px;color:#f0ba6d;background:#f0ba6d1a;padding:3px 5px;border-radius:4px}.weak-topic p{color:#aebdb7;font-size:8px;margin:7px 0 10px;line-height:1.45}.memory-meter{height:3px;background:#ffffff21;border-radius:3px;overflow:hidden}.memory-meter i{display:block;height:100%;background:linear-gradient(90deg,#e8a654,#69d5ad)}.memory-empty{grid-column:1/-1;border:1px dashed rgba(255,255,255,.18);border-radius:10px;text-align:center;padding:17px;color:#aebdb7;font-size:9px}.memory-empty strong{display:block;color:#fff;font:600 13px Fraunces;margin-bottom:4px}.papers-heading{display:flex;align-items:flex-end;margin:29px 0 14px}.papers-heading>div:first-child{flex:1}.papers-heading h2{font:600 21px Fraunces;margin:0 0 3px}.papers-heading p{font-size:9px;color:var(--muted);margin:0}.paper-filters{display:flex;gap:4px;background:color-mix(in srgb,var(--line) 55%,transparent);padding:3px;border-radius:7px}.paper-filters button{border:0;background:none;border-radius:5px;padding:6px 9px;color:var(--muted);font:600 8px inherit;cursor:pointer}.paper-filters button.active{background:var(--paper);color:var(--ink);box-shadow:0 1px 4px #00000012}.folder-paper-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.folder-empty-paper{grid-column:1/-1;border:1.5px dashed color-mix(in srgb,var(--muted) 40%,transparent);background:color-mix(in srgb,var(--paper) 45%,transparent);border-radius:14px;padding:45px;text-align:center}.folder-empty-paper>span{display:grid;place-items:center;width:46px;height:46px;background:var(--mint);color:var(--green);border-radius:12px;margin:auto;font-size:20px}.folder-empty-paper h3{font:600 20px Fraunces;margin:17px 0 6px}.folder-empty-paper p{font-size:10px;color:var(--muted)}.folder-empty-paper button{border:0;background:var(--green);color:#fff;padding:10px 14px;border-radius:8px;font:700 10px inherit;cursor:pointer;margin-top:8px}.folder-paper-card{background:var(--paper);border:1px solid var(--line);border-radius:13px;padding:17px;position:relative;transition:.2s}.folder-paper-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.paper-card-top{display:flex;align-items:center}.paper-file-icon{width:35px;height:42px;border-radius:5px;background:var(--mint);color:var(--green);display:grid;place-items:center;font-size:16px}.paper-status{margin-left:auto;border-radius:9px;padding:4px 7px;font-size:7px;font-weight:700}.paper-status.not_started{background:color-mix(in srgb,var(--line) 60%,transparent);color:var(--muted)}.paper-status.in_progress{background:#fff0ce;color:#9c671b}.paper-status.completed{background:#dcefe5;color:#1d7954}.folder-paper-card h3{font:600 15px Fraunces;margin:15px 0 4px}.paper-meta{font-size:8px;color:var(--muted);min-height:24px}.paper-badges{display:flex;gap:5px;margin:12px 0}.paper-badge{font-size:7px;padding:4px 6px;border-radius:4px;background:var(--mint);color:var(--green)}.paper-badge.estimated{background:#fff0d2;color:#93621b}.paper-card-footer{border-top:1px solid var(--line);padding-top:11px;display:flex;align-items:center}.paper-card-footer span{font-size:8px;color:var(--muted)}.paper-card-footer button{margin-left:auto;border:0;background:none;color:var(--green);font:700 9px inherit;cursor:pointer}.folder-privacy{display:flex;gap:9px;align-items:center;border-top:1px solid var(--line);margin-top:22px;padding:18px 3px;color:var(--muted)}.folder-privacy>span{color:var(--green)}.folder-privacy p{font-size:8px;margin:0;line-height:1.5}.paper-upload-modal{position:fixed;inset:0;z-index:160;background:#081410b8;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:grid;place-items:center;padding:20px}.paper-upload-card{position:relative;width:min(650px,100%);max-height:calc(100vh - 35px);overflow:auto;background:var(--paper);color:var(--ink);border-radius:17px;padding:28px 32px;box-shadow:0 30px 80px #00000052}.upload-progress{display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line);padding-bottom:17px;margin-bottom:23px}.upload-progress>span{white-space:nowrap;color:var(--gold);font-size:8px;letter-spacing:1.4px;font-weight:700}.upload-progress>div{height:3px;background:var(--line);border-radius:3px;flex:1}.upload-progress i{display:block;width:33.3%;height:100%;background:var(--green);transition:.25s}.upload-step{display:none;min-height:385px}.upload-step.active{display:block}.upload-step h2{font:600 29px Fraunces;margin:8px 0}.upload-step>p{font-size:11px;color:var(--muted);line-height:1.55;margin:0 0 20px}.uploaded-file-chip,.scheme-file{display:flex;align-items:center;gap:11px;background:var(--mint);border:1px solid color-mix(in srgb,var(--green) 22%,transparent);padding:11px;border-radius:9px;margin:15px 0}.uploaded-file-chip>span{width:31px;height:35px;display:grid;place-items:center;background:var(--paper);border-radius:5px;color:var(--green)}.uploaded-file-chip>div,.scheme-file>div{display:flex;flex-direction:column}.uploaded-file-chip strong,.scheme-file strong{font-size:10px}.uploaded-file-chip small,.scheme-file small{font-size:8px;color:var(--muted);margin-top:3px}.uploaded-file-chip>b{margin-left:auto;color:var(--green)}.wide-label,.field-row label{display:grid;gap:5px;color:var(--muted);font-size:8px;font-weight:700;margin-top:14px}.wide-label input,.field-row input{background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:11px;font:11px inherit;outline:0}.wide-label input:focus,.field-row input:focus{border-color:var(--green)}.field-row{display:grid;grid-template-columns:1.3fr .7fr .8fr;gap:9px}.scheme-drop{width:100%;min-height:145px;border:1.5px dashed color-mix(in srgb,var(--muted) 45%,transparent);background:color-mix(in srgb,var(--mint) 35%,transparent);color:var(--ink);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer}.scheme-drop>span{width:33px;height:33px;border-radius:50%;background:var(--mint);color:var(--green);display:grid;place-items:center;font-size:17px}.scheme-drop strong{font-size:11px;margin:9px 0 3px}.scheme-drop small{font-size:8px;color:var(--muted)}.scheme-file>span{width:29px;height:29px;background:var(--green);color:#fff;border-radius:50%;display:grid;place-items:center}.scheme-file>button{margin-left:auto;border:0;background:none;color:var(--danger);font-size:8px;cursor:pointer}.marking-honesty{display:flex;gap:10px;background:#fff3da;color:#664c22;border:1px solid #ead7ae;padding:12px;border-radius:9px;margin-top:15px}.marking-honesty>span{width:20px;height:20px;display:grid;place-items:center;border:1px solid #b98a38;border-radius:50%;font:italic 11px serif}.marking-honesty p{font-size:8px;line-height:1.5;margin:0}.ocr-status{display:flex;align-items:center;gap:10px;background:var(--mint);padding:10px;border-radius:8px;margin-bottom:11px}.ocr-status>span{width:27px;height:27px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center}.ocr-status>div{display:flex;flex-direction:column}.ocr-status strong{font-size:9px}.ocr-status small{font-size:8px;color:var(--muted)}.ocr-question{display:grid;gap:6px}.ocr-question>span{font-size:7px;letter-spacing:1px;color:var(--muted);font-weight:700}.ocr-question>span b{float:right;color:var(--green);text-transform:none;letter-spacing:0}.ocr-question textarea{width:100%;resize:vertical;background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:9px;padding:12px;font:11px/1.6 inherit;outline:0}.ocr-preview-image{height:100px;background-size:cover;background-position:center;border-radius:8px;margin:9px 0;filter:saturate(.75)}.diagram-warning{display:flex;gap:9px;background:#fff0d6;border:1px solid #efd8ad;color:#694e26;border-radius:8px;padding:10px;margin-top:10px}.diagram-warning p{font-size:8px;line-height:1.5;margin:0}.paper-upload-footer{display:flex;align-items:center;border-top:1px solid var(--line);padding-top:16px}.paper-upload-footer>span{margin-left:auto;color:var(--muted);font-size:8px}.paper-upload-footer>span:before{content:"⌾";color:var(--green);margin-right:5px}.paper-upload-footer>button:last-child{margin-left:13px;background:var(--green);color:#fff;border:0;border-radius:8px;padding:10px 14px;font:700 10px inherit;cursor:pointer}.paper-upload-footer>button:last-child:disabled{opacity:.35}.upload-back{border:0;background:none;color:var(--green);font:700 9px inherit;cursor:pointer}@media(max-width:850px){.folder-paper-grid,.weak-topic-grid{grid-template-columns:1fr 1fr}.folder-heading{align-items:flex-start;gap:15px}.folder-upload{white-space:nowrap}}@media(max-width:560px){.folder-paper-grid,.weak-topic-grid{grid-template-columns:1fr}.folder-heading{flex-direction:column}.memory-heading{align-items:flex-start}.memory-updated,.paper-filters{display:none}.paper-upload-card{padding:25px 18px}.field-row{grid-template-columns:1fr 1fr}.field-row label:first-child{grid-column:1/-1}.paper-upload-footer>span{display:none}.paper-upload-footer>button:last-child{margin-left:auto}}.paper-card-footer .complete-paper{color:var(--muted);font-size:7px}.paper-card-footer .complete-paper+button{margin-left:7px}.sidebar{overflow:visible}.profile{cursor:pointer;width:100%;position:relative}.profile-menu{display:none;position:absolute;left:20px;right:20px;bottom:72px;background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:6px;box-shadow:0 14px 35px #00000040;z-index:25}.profile-menu.open{display:block}.profile-menu button{display:block;width:100%;border:0;background:none;color:var(--ink);padding:10px;border-radius:7px;text-align:left;font:600 10px inherit;cursor:pointer}.profile-menu button:hover{background:var(--mint)}.profile-menu .sign-out{color:var(--danger);border-top:1px solid var(--line);border-radius:0;margin-top:3px;padding-top:11px}:where(button,a,input,textarea,select,[tabindex]):focus-visible{outline:3px solid color-mix(in srgb,var(--green) 38%,white);outline-offset:3px}.picker-panel select:disabled{opacity:.72;color:var(--ink);background:color-mix(in srgb,var(--paper) 65%,var(--mint));cursor:not-allowed}.picker-add-course{background:transparent!important;color:var(--green)!important;border:1px solid color-mix(in srgb,var(--green) 30%,var(--line))!important}.subject-card{width:100%;font:inherit;color:var(--ink);text-align:left}.request-panel{margin-top:12px;border-top:1px solid var(--line);padding-top:11px}.back-step{display:block}.request-trigger{border:0;background:none;color:var(--green);font:700 10px inherit;padding:5px 0;cursor:pointer}.request-form{display:grid;grid-template-columns:.65fr 1.35fr auto;gap:8px;align-items:end;margin-top:9px;padding:11px;background:color-mix(in srgb,var(--mint) 55%,white);border-radius:10px}.request-form label{display:grid;gap:5px;color:var(--muted);font-size:8px;font-weight:700}.request-form input{min-width:0;border:1px solid var(--line);border-radius:7px;padding:9px;background:var(--paper);color:var(--ink);font:10px inherit}.request-form button{border:0;border-radius:7px;background:var(--green);color:#fff;padding:10px 12px;font:700 9px inherit;cursor:pointer}#universityRequestForm{grid-template-columns:1fr auto}.university-search{margin-bottom:12px}.thinking-message .bubble{display:flex;align-items:center;gap:12px;padding:14px 17px}.thinking-dots{display:flex;gap:4px}.thinking-dots i{width:5px;height:5px;border-radius:50%;background:var(--green);animation:thinkingDot 1s ease-in-out infinite}.thinking-dots i:nth-child(2){animation-delay:.15s}.thinking-dots i:nth-child(3){animation-delay:.3s}.chat{scroll-padding:28px}.message{margin-bottom:22px}.bubble{max-width:720px}.bubble p{font-size:15px;line-height:1.74;margin:7px 0 13px}@keyframes thinkingDot{0%,70%,to{opacity:.25;transform:translateY(0)}35%{opacity:1;transform:translateY(-3px)}}.view{position:relative}.view.is-loading{min-height:360px}.view.is-loading>*{opacity:.32;transition:opacity .2s}.view.is-loading:after{content:"";position:absolute;z-index:8;inset:55px 55px auto;height:230px;border-radius:16px;pointer-events:none;background:linear-gradient(90deg,transparent,rgba(255,255,255,.72),transparent) -180px 0/180px 100% no-repeat,linear-gradient(var(--line) 18px,transparent 0) 0 12px/62% 46px repeat-y,linear-gradient(var(--line) 95px,transparent 0) 0 58px/100% 112px repeat-y;animation:skeletonSweep 1.1s ease-in-out infinite}@keyframes skeletonSweep{to{background-position:calc(100% + 180px) 0,0 12px,0 58px}}@media(max-width:650px){.request-form{grid-template-columns:1fr}.view.is-loading:after{inset:38px 20px auto}.voice-settings-card{padding:27px 20px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}.thinking-dots i{animation:none!important}.view.is-loading:after{animation:none}}.folder-actions{display:flex;gap:8px;align-items:center}.material-upload{border:1px solid color-mix(in srgb,var(--green) 32%,var(--line));background:var(--paper);color:var(--green);border-radius:9px;padding:10px 13px;font:700 9px inherit;cursor:pointer}.material-library,.study-sets-library{margin:30px 0}.materials-heading{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:13px}.materials-heading h2{font:600 22px Fraunces;margin:5px 0 3px}.materials-heading p{margin:0;color:var(--muted);font-size:9px}.materials-heading>button{border:0;background:none;color:var(--green);font:700 9px inherit;cursor:pointer}.material-grid{display:grid;grid-template-columns:1fr 1fr;gap:11px}.material-card{display:grid;grid-template-columns:45px 1fr;gap:12px;background:var(--paper);border:1px solid var(--line);border-radius:13px;padding:14px;position:relative;box-shadow:0 5px 15px #142d2209}.material-card-icon{width:43px;height:48px;border-radius:9px;display:grid;place-items:center;background:#e8f2ed;color:var(--green);font-size:18px}.material-card-icon.youtube{background:#fae8e4;color:#b84132}.material-card-icon.textbook{background:#f4ead6;color:#8f6729}.material-card-icon.image{background:#e5edf8;color:#315f98}.material-card-body{min-width:0}.material-card-body>span{font-size:7px;letter-spacing:1px;color:var(--gold);text-transform:uppercase;font-weight:700}.material-card h3{font:600 14px Fraunces;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:4px 0}.material-card p{font-size:8px;color:var(--muted);margin:0}.material-card-actions{grid-column:1/-1;display:flex;gap:6px;padding-top:10px;border-top:1px solid var(--line)}.material-card-actions button{border:0;background:var(--mint);color:var(--green);border-radius:7px;padding:7px 9px;font:700 8px inherit;cursor:pointer}.material-card-actions button:first-child{margin-right:auto;background:transparent;border:1px solid var(--line)}.material-empty,.study-set-empty{grid-column:1/-1;display:flex;align-items:center;gap:12px;border:1px dashed color-mix(in srgb,var(--muted) 38%,transparent);border-radius:12px;padding:18px;background:color-mix(in srgb,var(--paper) 60%,transparent)}.material-empty>span{width:38px;height:38px;border-radius:9px;background:var(--mint);color:var(--green);display:grid;place-items:center}.material-empty>div{display:flex;flex-direction:column}.material-empty strong,.study-set-empty strong{font-size:10px}.material-empty p,.study-set-empty span{font-size:8px;color:var(--muted);margin:3px 0}.material-empty button{margin-left:auto;border:0;background:var(--green);color:#fff;border-radius:7px;padding:8px 10px;font:700 8px inherit;cursor:pointer}.study-set-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}.study-set-card{display:flex;align-items:center;gap:10px;border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:12px;padding:12px;text-align:left;cursor:pointer}.study-set-card:hover{border-color:color-mix(in srgb,var(--green) 46%,var(--line));transform:translateY(-1px)}.study-set-icon{width:35px;height:35px;border-radius:9px;background:#e9e5fa;color:#6650a8;display:grid;place-items:center;font-size:16px}.study-set-card.quiz .study-set-icon{background:#e5f1e9;color:var(--green)}.study-set-card>span:nth-child(2){display:flex;flex-direction:column;min-width:0}.study-set-card small{color:var(--gold);font-size:7px;letter-spacing:.6px}.study-set-card strong{font:600 12px Fraunces;margin:2px 0}.study-set-card em{font-style:normal;color:var(--muted);font-size:8px}.study-set-card>b{margin-left:auto;color:var(--green);font-size:8px;white-space:nowrap}.study-set-empty{display:flex;flex-direction:column;align-items:flex-start;gap:2px}.weak-topic .practice-topic{margin-top:10px;border:0;background:var(--mint);color:var(--green);border-radius:7px;padding:7px 9px;font:700 8px inherit;cursor:pointer}.paper-study-actions{display:flex;gap:6px;margin-top:10px}.paper-study-actions button{border:1px solid var(--line);background:var(--paper);color:var(--green);border-radius:7px;padding:6px 8px;font:700 7px inherit;cursor:pointer}.message-actions{display:flex;gap:12px;align-items:center}.teach-back-btn{border:0;background:none;color:#7b628f;padding:3px 0;font-weight:700;font-size:11px;cursor:pointer}.material-modal,.study-session-modal{position:fixed;inset:0;z-index:165;background:#081410b8;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:grid;place-items:center;padding:20px}.material-modal-card,.study-session-card{position:relative;width:min(610px,100%);max-height:calc(100vh - 38px);overflow:auto;background:var(--paper);color:var(--ink);border-radius:18px;padding:30px 32px;box-shadow:0 30px 80px #00000052}.material-modal-card h2,.study-session-card h2{font:600 29px Fraunces;margin:7px 0}.material-modal-card section>p{color:var(--muted);font-size:10px;line-height:1.55}.material-file-drop{width:100%;min-height:135px;border:1.5px dashed color-mix(in srgb,var(--muted) 45%,transparent);background:color-mix(in srgb,var(--mint) 38%,transparent);color:var(--ink);border-radius:13px;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;margin-top:18px}.material-file-drop>span{width:36px;height:36px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center;font-size:17px}.material-file-drop strong{font-size:11px;margin:8px 0 2px}.material-file-drop small{font-size:8px;color:var(--muted)}.material-divider{border-top:1px solid var(--line);height:1px;margin:24px 0;text-align:center}.material-divider span{position:relative;top:-8px;background:var(--paper);padding:0 8px;color:var(--muted);font-size:8px}.material-modal form{display:grid;grid-template-columns:1fr auto;align-items:end;gap:8px}.material-modal form label{display:grid;gap:5px;color:var(--muted);font-size:8px;font-weight:700}.material-modal form input{min-width:0;border:1px solid var(--line);border-radius:8px;padding:10px;background:var(--paper);color:var(--ink);font:10px inherit}.material-modal form>button{border:0;border-radius:8px;background:var(--green);color:#fff;padding:11px 13px;font:700 9px inherit;cursor:pointer}.material-processing{display:flex;align-items:center;gap:11px;margin-top:14px;background:var(--mint);padding:12px;border-radius:9px}.material-processing>span{width:24px;height:24px;border:3px solid color-mix(in srgb,var(--green) 20%,transparent);border-top-color:var(--green);border-radius:50%;animation:materialSpin .8s linear infinite}.material-processing>div{display:flex;flex-direction:column}.material-processing strong{font-size:9px}.material-processing small{font-size:8px;color:var(--muted);margin-top:2px}@keyframes materialSpin{to{transform:rotate(360deg)}}.material-summary{background:var(--mint);border:1px solid color-mix(in srgb,var(--green) 18%,transparent);border-radius:12px;padding:16px;margin:17px 0}.material-summary>span{font-size:7px;letter-spacing:1px;color:var(--gold);font-weight:700;text-transform:uppercase}.material-summary h3{font:600 17px Fraunces;margin:5px 0}.material-summary p{font-size:9px;line-height:1.6;color:var(--muted);margin:0}.material-ready-actions{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:8px}.material-ready-actions button{border:1px solid color-mix(in srgb,var(--green) 28%,var(--line));background:var(--paper);color:var(--green);border-radius:9px;padding:11px 8px;font:700 9px inherit;cursor:pointer}.material-ready-actions button:first-child{background:var(--green);color:#fff}.material-privacy{display:block;text-align:center;color:var(--muted);font-size:8px;margin-top:13px}.study-session-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:15px}.study-session-heading>span{color:var(--green);font:700 9px inherit;margin-top:11px;white-space:nowrap}.flashcard{width:100%;height:285px;border:0;background:transparent;position:relative;perspective:1000px;cursor:pointer;margin:17px 0}.flashcard-face{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:35px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(145deg,var(--paper),color-mix(in srgb,var(--mint) 45%,var(--paper)));box-shadow:0 15px 35px #1b34291a;backface-visibility:hidden;transition:transform .45s}.flashcard-face.back{transform:rotateY(180deg);background:linear-gradient(145deg,#183f33,#245845);color:#fff}.flashcard.flipped .front{transform:rotateY(180deg)}.flashcard.flipped .back{transform:rotateY(360deg)}.flashcard-face small{font-size:8px;letter-spacing:1.5px;color:var(--gold)}.flashcard-face strong{font:600 22px/1.35 Fraunces;max-width:440px;margin:16px 0}.flashcard-face em{font:9px inherit;color:var(--muted)}.flashcard-face.back em{color:#b9d0c7}.flashcard-rating{display:grid;grid-template-columns:1fr 1fr;gap:9px}.flashcard-rating button{border:1px solid var(--line);background:var(--paper);color:var(--danger);border-radius:9px;padding:10px;font:700 9px inherit;cursor:pointer}.flashcard-rating button:last-child{background:var(--green);color:#fff;border-color:var(--green)}.set-source{text-align:center;color:var(--muted);font-size:8px;margin-top:14px}.quiz-question>small{color:var(--gold);letter-spacing:1px;font-size:7px}.quiz-question h3{font:600 19px/1.35 Fraunces;margin:10px 0 17px}.quiz-options{display:grid;gap:8px}.quiz-options button{display:flex;align-items:center;gap:9px;border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:9px;padding:10px;text-align:left;font:10px/1.4 inherit;cursor:pointer}.quiz-options b{width:25px;height:25px;border-radius:7px;background:var(--mint);color:var(--green);display:grid;place-items:center;flex:0 0 auto}.quiz-options button.correct{border-color:#329066;background:#e5f4eb}.quiz-options button.wrong{border-color:#b75548;background:#fae9e6}.quiz-question #shortAnswerForm{display:grid;grid-template-columns:1fr}.quiz-question textarea{width:100%;resize:vertical;border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:9px;padding:11px;font:10px/1.55 inherit}.quiz-feedback{margin-top:12px;padding:11px;border-radius:9px;background:var(--mint);color:var(--ink)}.quiz-feedback strong{font-size:9px}.quiz-feedback p{font-size:9px;line-height:1.5;margin:4px 0}.quiz-next{display:block;margin:13px 0 0 auto;border:0;background:var(--green);color:#fff;border-radius:8px;padding:10px 13px;font:700 9px inherit;cursor:pointer}.study-complete{text-align:center;padding:38px 20px}.study-complete>span{width:52px;height:52px;border-radius:50%;background:var(--mint);color:var(--green);display:grid;place-items:center;margin:auto;font-size:23px}.study-complete p{color:var(--muted);font-size:10px;line-height:1.6}.study-complete button{border:0;background:var(--green);color:#fff;border-radius:8px;padding:10px 14px;font:700 9px inherit;cursor:pointer}@media(max-width:720px){.folder-actions{align-items:stretch;flex-direction:column}.material-grid,.study-set-grid,.material-ready-actions{grid-template-columns:1fr}.material-modal-card,.study-session-card{padding:27px 19px}.material-modal form{grid-template-columns:1fr}.flashcard{height:260px}.flashcard-face strong{font-size:19px}}.learner-access-card{border-color:color-mix(in srgb,var(--green) 35%,var(--line));background:linear-gradient(135deg,color-mix(in srgb,var(--mint) 65%,var(--paper)),var(--paper))}.learner-access-card>div>span{color:var(--green)}.personal-library-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;padding:8px 0 24px}.personal-library-hero>div:first-child{max-width:700px}.personal-library-hero h1{margin:8px 0 10px}.personal-library-hero p{color:var(--muted);line-height:1.65}.personal-library-actions{display:flex;gap:9px;flex-wrap:wrap}.personal-library-actions button,.personal-library-group header button,.personal-library-empty button{border:0;border-radius:10px;background:var(--green);color:#fff;padding:12px 16px;font:700 10px inherit;cursor:pointer}.personal-library-actions .secondary{background:var(--paper);color:var(--green);border:1px solid var(--line)}.library-safety-note{display:flex;align-items:flex-start;gap:12px;border:1px solid color-mix(in srgb,var(--green) 25%,var(--line));background:color-mix(in srgb,var(--mint) 52%,var(--paper));border-radius:12px;padding:16px 18px;margin-bottom:18px}.library-safety-note>span{display:grid;place-items:center;min-width:24px;height:24px;border-radius:50%;background:var(--green);color:#fff;font-size:11px}.library-safety-note p{margin:1px 0;color:var(--muted);line-height:1.5}.library-safety-note strong{color:var(--text)}.library-toolbar{display:grid;grid-template-columns:minmax(240px,1fr) minmax(180px,260px);gap:12px;margin:20px 0}.library-toolbar label,.material-course-route{display:flex;flex-direction:column;gap:7px;color:var(--muted);font:700 9px inherit;letter-spacing:.5px}.library-toolbar input,.library-toolbar select,.material-course-route select,#youtubeMaterialForm textarea{width:100%;border:1px solid var(--line);border-radius:9px;background:var(--paper);color:var(--text);padding:12px;font:400 12px inherit}.material-course-route{margin:18px 0}.material-course-route small,#youtubeMaterialForm label small{font:400 9px/1.45 inherit;letter-spacing:0;color:var(--muted)}#youtubeMaterialForm{display:flex!important;flex-direction:column;gap:12px!important}#youtubeMaterialForm label{display:flex;flex-direction:column;gap:6px}.personal-library-groups{display:flex;flex-direction:column;gap:16px}.personal-library-group{border:1px solid var(--line);background:var(--paper);border-radius:16px;overflow:hidden}.personal-library-group>header{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:18px 20px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--mint) 35%,var(--paper))}.personal-library-group header span{color:var(--gold);font:700 8px inherit;letter-spacing:1.2px}.personal-library-group header h2{font:600 20px Fraunces;margin:4px 0}.personal-library-group header small{color:var(--muted)}.personal-library-group header button{background:transparent;color:var(--green);border:1px solid var(--line)}.personal-library-items{display:flex;flex-direction:column}.personal-library-item{display:grid;grid-template-columns:46px minmax(0,1fr) auto;align-items:center;gap:14px;padding:16px 20px;border-bottom:1px solid var(--line)}.personal-library-item:last-child{border-bottom:0}.library-item-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:11px;background:var(--mint);color:var(--green);font-size:18px}.library-item-icon.paper{background:#f4eadc;color:#95642f}.personal-library-item>div:nth-child(2){min-width:0}.personal-library-item small{display:block;color:var(--gold);font:700 8px inherit;letter-spacing:1px}.personal-library-item strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:4px 0;font-size:13px}.personal-library-item p{margin:0;color:var(--muted);font-size:9px}.personal-library-item em{display:inline-block;margin-top:6px;color:var(--green);font:700 8px inherit}.library-item-actions{display:flex;gap:6px;align-items:center}.library-item-actions button,.library-item-actions a{border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--green);padding:8px 10px;font:700 8px inherit;text-decoration:none;cursor:pointer}.library-item-actions .delete-document{color:var(--danger)}.personal-library-empty{text-align:center;border:1px dashed var(--line);border-radius:16px;padding:46px 20px;background:var(--paper)}.personal-library-empty>span{font-size:28px;color:var(--gold)}.personal-library-empty h2{font:600 24px Fraunces}.personal-library-empty p{color:var(--muted);max-width:560px;margin:0 auto 18px}.library-course-overview{margin-top:36px}.library-course-empty{padding:20px;color:var(--muted)}.flashcard-coaching{display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:8px;margin:-4px 0 10px}.flashcard-coaching button{border:1px solid var(--line);border-radius:9px;background:var(--paper);color:var(--green);padding:10px;font:700 9px inherit;cursor:pointer}.flashcard-coaching .talk{background:var(--green);color:#fff;border-color:var(--green)}.flashcard-hint{padding:12px 14px;margin:8px 0 12px;border-left:3px solid var(--gold);border-radius:7px;background:color-mix(in srgb,var(--mint) 50%,var(--paper));color:var(--text);font-size:11px;line-height:1.55}@media(max-width:780px){.personal-library-hero,.personal-library-group>header{align-items:stretch;flex-direction:column}.library-toolbar{grid-template-columns:1fr}.personal-library-item{grid-template-columns:42px minmax(0,1fr)}.library-item-actions{grid-column:1/-1;flex-wrap:wrap}.flashcard-coaching{grid-template-columns:1fr 1fr}}.app-shell{grid-template-columns:300px minmax(0,1fr)}.sidebar{padding:25px 16px 18px;overflow:hidden}.new-session{margin:24px 0 17px;padding:12px 13px}.course-folders{display:flex;min-height:0;flex:1;flex-direction:column}.sidebar-section-heading{display:flex;align-items:center;padding:0 5px}.sidebar-section-heading .nav-label{flex:1;margin:0}.sidebar-section-heading>button{width:25px;height:25px;border:0;border-radius:7px;background:#ffffff14;color:#cfe6dc;cursor:pointer}.course-folder-list{min-height:0;margin-top:8px;overflow-y:auto;padding-right:3px;scrollbar-width:thin}.course-folder{margin-bottom:5px;border:1px solid transparent;border-radius:10px}.course-folder.active{background:#ffffff0e;border-color:#ffffff14}.course-folder-button{display:grid;grid-template-columns:31px 1fr 15px;gap:9px;align-items:center;width:100%;padding:9px 8px;border:0;background:transparent;color:#e9f4ef;text-align:left;cursor:pointer}.course-folder-icon{display:grid;place-items:center;width:31px;height:31px;border-radius:8px;background:#9dd5b521;color:#aee0c3;font:600 14px Fraunces}.course-folder-button>span:nth-child(2){min-width:0}.course-folder-button strong,.course-folder-button small{display:block}.course-folder-button strong{overflow:hidden;color:#f6fbf8;font-size:10px;line-height:1.3;text-overflow:ellipsis;white-space:nowrap}.course-folder-button small{margin-top:3px;color:#89a99c;font-size:7px}.course-folder-button b{color:#87aa9b;font-size:10px;transition:transform .2s}.course-folder.expanded .course-folder-button b{transform:rotate(180deg)}.course-chat-list{display:none;padding:0 6px 7px 34px}.course-folder.expanded .course-chat-list{display:block}.course-chat-item{display:grid;grid-template-columns:16px minmax(0,1fr);gap:3px;align-items:center;width:100%;padding:7px 6px;border:0;border-radius:6px;background:transparent;color:#a8c0b6;text-align:left;cursor:pointer}.course-chat-item span:last-child{overflow:hidden;font-size:8px;text-overflow:ellipsis;white-space:nowrap}.course-chat-item:hover,.course-chat-item.active{background:#ffffff13;color:#fff}.course-chat-item.new{color:#8ed1af}.secondary-nav{flex:0 0 auto;margin-top:12px;padding-top:12px;border-top:1px solid rgba(255,255,255,.09)}.course-card{flex:0 0 auto;margin-top:10px}.profile{flex:0 0 auto}.course-workspace-nav{display:flex;align-items:center;gap:5px;margin:17px 0 0;padding:8px;border:1px solid var(--line);border-radius:12px;background:color-mix(in srgb,var(--paper) 82%,transparent);overflow-x:auto}.course-workspace-nav>div{display:grid;grid-template-columns:8px minmax(100px,1fr);align-items:center;margin-right:auto;padding:0 9px}.workspace-course-dot{grid-row:1/3;width:7px;height:7px;margin-right:8px;border-radius:50%;background:var(--green)}.course-workspace-nav strong{font-size:10px;white-space:nowrap}.course-workspace-nav small{color:var(--muted);font-size:7px}.course-workspace-nav>button{display:flex;gap:5px;align-items:center;white-space:nowrap;border:0;border-radius:8px;background:transparent;color:var(--muted);padding:8px 10px;font:700 8px inherit;cursor:pointer}.course-workspace-nav>button:hover,.course-workspace-nav>button.active{background:var(--mint);color:var(--green)}.course-workspace-nav>button span{display:grid;place-items:center;min-width:16px;height:16px;padding:0 4px;border-radius:8px;background:color-mix(in srgb,var(--green) 9%,transparent);font-size:7px}.composer{position:relative}.attach-menu{display:none;position:absolute;left:10px;bottom:54px;z-index:15;width:min(360px,calc(100vw - 40px));padding:10px;border:1px solid var(--line);border-radius:12px;background:var(--paper);box-shadow:0 18px 45px #12251d29}.attach-menu.open{display:block}.attach-menu>button{display:flex;gap:10px;align-items:center;width:100%;padding:10px;border:0;border-radius:9px;background:var(--mint);color:var(--ink);text-align:left;cursor:pointer}.attach-menu>button>span:first-child{display:grid;place-items:center;width:31px;height:31px;border-radius:8px;background:var(--green);color:#fff}.attach-menu strong,.attach-menu small{display:block}.attach-menu small{color:var(--muted);font-size:8px}.attach-menu form{display:grid;grid-template-columns:1fr auto;gap:7px;align-items:end;margin:9px 0}.attach-menu label{display:grid;gap:4px;color:var(--muted);font-size:8px}.attach-menu input{min-width:0;padding:9px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--ink);font:10px inherit}.attach-menu form button{height:34px;border:0;border-radius:7px;background:var(--green);color:#fff;font:700 9px inherit;cursor:pointer}.attach-menu>small{padding:0 3px}.attachment-message{justify-content:center}.attachment-inline-card,.upload-mismatch-card{width:min(690px,calc(100% - 48px));border:1px solid var(--line);border-radius:13px;background:var(--paper);padding:15px 17px;box-shadow:0 7px 24px #1f342a0f}.attachment-kind,.mismatch-kicker{color:var(--green);font-size:7px;font-weight:800;letter-spacing:1.5px}.attachment-inline-main{display:flex;gap:11px;align-items:center;margin:9px 0}.attachment-file-icon{display:grid;place-items:center;width:38px;height:42px;border-radius:8px;background:var(--mint);color:var(--green);font-size:18px}.attachment-inline-main>div{min-width:0;flex:1}.attachment-inline-main strong,.attachment-inline-main small{display:block}.attachment-inline-main strong{overflow:hidden;font:600 14px Fraunces;text-overflow:ellipsis;white-space:nowrap}.attachment-inline-main small{margin-top:3px;color:var(--muted);font-size:8px}.attachment-inline-main>b{color:var(--success)}.attachment-tags{display:flex;gap:5px;flex-wrap:wrap}.attachment-tags span{padding:4px 7px;border-radius:10px;background:var(--mint);color:var(--green);font-size:7px;font-weight:700}.attachment-tags span.unsorted{background:#fff0d2;color:#93621b}.attachment-inline-card>button{margin-top:10px;border:0;background:none;color:var(--green);padding:0;font:700 9px inherit;cursor:pointer}.upload-mismatch-card{border-color:color-mix(in srgb,var(--gold) 42%,var(--line));background:color-mix(in srgb,var(--paper) 94%,#fff2d2)}.upload-mismatch-card h3{margin:7px 0 5px;font:600 16px/1.35 Fraunces}.upload-mismatch-card p{margin:0;color:var(--muted);font-size:9px;line-height:1.5}.mismatch-actions{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.mismatch-actions button{border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);padding:8px 10px;font:700 8px inherit;cursor:pointer}.mismatch-actions button:first-child{border-color:var(--green);background:var(--green);color:#fff}.diagram-message{justify-content:center}.interactive-diagram-card{width:min(780px,calc(100% - 48px));overflow:hidden;border:1px solid color-mix(in srgb,var(--green) 24%,var(--line));border-radius:17px;background:var(--paper);box-shadow:0 12px 34px #19312614}.interactive-diagram-card>header{display:flex;justify-content:space-between;gap:24px;align-items:flex-start;padding:20px 22px 15px}.interactive-diagram-card header>div{min-width:0}.interactive-diagram-card header span{color:var(--green);font-size:7px;font-weight:850;letter-spacing:1.8px}.interactive-diagram-card h3{margin:5px 0 4px;color:var(--ink);font:600 20px/1.25 Fraunces}.interactive-diagram-card header p{margin:0;color:var(--muted);font-size:9px;line-height:1.5}.interactive-diagram-card header small{flex:0 0 auto;padding:7px 9px;border:1px solid color-mix(in srgb,var(--green) 18%,var(--line));border-radius:9px;background:var(--mint);color:var(--green);font-size:7px;font-weight:700;line-height:1.55;text-align:right}.interactive-diagram-card header small i{display:inline-block;width:6px;height:6px;margin-right:3px;border-radius:50%;background:var(--success);box-shadow:0 0 0 3px color-mix(in srgb,var(--success) 13%,transparent)}.diagram-stage{margin:0 18px;border:1px solid color-mix(in srgb,var(--green) 14%,var(--line));border-radius:13px;background:radial-gradient(circle at 50% 35%,color-mix(in srgb,var(--mint) 72%,transparent),transparent 62%),color-mix(in srgb,var(--paper) 92%,var(--mint));overflow:hidden}.diagram-svg{display:block;width:100%;height:auto;min-height:260px;max-height:370px}.diagram-grid line{stroke:color-mix(in srgb,var(--ink) 8%,transparent);stroke-width:1}.diagram-axis{stroke:color-mix(in srgb,var(--ink) 42%,transparent);stroke-width:1.4}.diagram-primary-line{fill:none;stroke:var(--green);stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.diagram-guide-line{fill:none;stroke:color-mix(in srgb,var(--green) 55%,transparent);stroke-width:2}.diagram-curve{fill:none;stroke:#426fe8;stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.diagram-tangent-line{stroke:#de8d35;stroke-width:2.5;stroke-dasharray:8 6}.diagram-point,.diagram-node{fill:#426fe8;stroke:var(--paper);stroke-width:3}.diagram-value-label,.diagram-axis-label{fill:var(--muted);font:600 12px Manrope,sans-serif}.diagram-result-label{fill:var(--ink);font:750 13px Manrope,sans-serif}.diagram-equation-label{fill:var(--green);font:700 12px Manrope,sans-serif}.diagram-object{fill:color-mix(in srgb,var(--mint) 82%,var(--paper));stroke:var(--green);stroke-width:2}.diagram-object-label{fill:var(--green);font:700 14px Manrope,sans-serif}.diagram-force-line{color:#426fe8;stroke:currentColor;stroke-width:5;stroke-linecap:round}.diagram-battery-long{stroke:#426fe8;stroke-width:5}.diagram-battery-short{stroke:#426fe8;stroke-width:3}.diagram-resistor{fill:none;stroke:#de8d35;stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.diagram-bonds line{stroke:color-mix(in srgb,var(--ink) 62%,transparent);stroke-width:5;stroke-linecap:round}.diagram-atom{stroke:var(--paper);stroke-width:4;filter:drop-shadow(0 5px 8px rgba(32,56,45,.15))}.diagram-atom-label{fill:#fff;font:800 17px Manrope,sans-serif}.diagram-process-box{fill:color-mix(in srgb,var(--mint) 76%,var(--paper));stroke:var(--green);stroke-width:2}.diagram-process-label{fill:var(--ink);font:700 14px Manrope,sans-serif}.diagram-arrow-head{fill:var(--green)}.diagram-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;padding:14px 18px 2px}.diagram-control{display:grid;gap:8px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:color-mix(in srgb,var(--paper) 93%,var(--mint));color:var(--muted);font-size:8px}.diagram-control>span{display:flex;justify-content:space-between;gap:8px;align-items:center}.diagram-control strong{color:var(--ink);font-size:9px}.diagram-control input{width:100%;height:5px;accent-color:var(--green);cursor:pointer}.interactive-diagram-card>footer{padding:11px 20px 15px;color:var(--muted);font-size:7px;line-height:1.5;text-align:center}.diagram-message+.tutor-message{margin-top:10px}@media(max-width:620px){.interactive-diagram-card{width:100%}.interactive-diagram-card>header{gap:12px;padding:17px 15px 12px}.interactive-diagram-card h3{font-size:17px}.interactive-diagram-card header small{display:none}.diagram-stage{margin:0 10px}.diagram-svg{min-height:220px}.diagram-controls{grid-template-columns:1fr;padding:10px 10px 0}.interactive-diagram-card>footer{padding-right:13px;padding-left:13px}}.diagram-skill-flow .diagram-guide-line{animation:skillFlowPulse 1.8s ease-in-out infinite}@keyframes skillFlowPulse{50%{opacity:.35;stroke-width:4}}@media(prefers-reduced-motion:reduce){.diagram-skill-flow .diagram-guide-line{animation:none}}.upload-processing-overlay{position:fixed;right:24px;bottom:24px;z-index:120;width:min(690px,calc(100vw - 48px));margin:0}.upload-processing-overlay .upload-processing-card{width:100%;box-shadow:0 18px 50px #14261e33}.upload-processing-message{justify-content:center}.upload-processing-card{display:flex;gap:13px;align-items:center;width:min(690px,calc(100% - 48px));padding:16px 18px;border:1px solid color-mix(in srgb,#3f78d8 26%,var(--line));border-radius:13px;background:color-mix(in srgb,var(--paper) 95%,#eaf2ff);box-shadow:0 7px 24px #1f342a0f}.upload-processing-card>div{min-width:0}.upload-processing-card strong,.upload-processing-card small{display:block}.upload-processing-card strong{color:var(--ink);font:600 13px Fraunces}.upload-processing-card small{margin-top:4px;color:var(--muted);font-size:8px;line-height:1.5}.upload-spinner{flex:0 0 auto;width:24px;height:24px;border:3px solid rgba(63,120,216,.17);border-top-color:#3f78d8;border-radius:50%;animation:atlasUploadSpin .75s linear infinite}@keyframes atlasUploadSpin{to{transform:rotate(360deg)}}.upload-processing-message.failed .upload-processing-card{border-color:color-mix(in srgb,#b94f45 32%,var(--line));background:color-mix(in srgb,var(--paper) 94%,#fff0ed)}.upload-error{display:grid;place-items:center;flex:0 0 auto;width:27px;height:27px;border-radius:50%;background:#b94f45;color:#fff;font-weight:800}.upload-failure-actions{display:flex;gap:7px;margin-top:9px}.upload-failure-actions button{padding:6px 9px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--ink);font:700 8px inherit;cursor:pointer}.upload-failure-actions button:first-child{border-color:var(--green);background:var(--green);color:#fff}.attachment-message.not-tutor-ready .attachment-inline-card{border-color:color-mix(in srgb,#b98435 34%,var(--line))}.attachment-message.not-tutor-ready .attachment-inline-main>b{display:grid;place-items:center;width:21px;height:21px;border-radius:50%;background:#fff0d2;color:#93621b}.attachment-message.not-tutor-ready .attachment-tags span:last-child{background:#fff0d2;color:#93621b}@media(prefers-reduced-motion:reduce){.upload-spinner{animation:none}}@media(max-width:560px){.upload-processing-card{width:100%}}.course-folder-list{margin-top:10px;padding-top:5px;border-top:1px solid rgba(255,255,255,.1)}.course-folder{border-radius:12px}.course-folder.active{border-color:#bee0d029;background:#fff1}.course-folder-button strong{color:#f8fcfa;font-size:10px}.course-folder-button small{color:#bdd3c9;font-size:7.5px;line-height:1.45}.course-folder-button b{color:#a7c5b8}.course-chat-list{margin:0 7px 9px 38px;padding:4px 0 7px 10px;border-left:1px solid rgba(190,224,208,.2)}.course-chat-group{padding:3px 0 6px}.chat-group-empty{display:block;padding:7px;color:#91aea1;font-size:7.5px}.course-chat-row{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 27px;align-items:center;margin:2px 0;border-radius:7px}.course-chat-row:hover,.course-chat-row.active{background:#ffffff17}.course-chat-row.active{box-shadow:inset 2px 0 #70d1a6}.course-chat-row .course-chat-item{color:#c8dcd3}.course-chat-row.active .course-chat-item{color:#fff}.course-chat-item span:first-child{color:#8fb4a4}.course-chat-item.new{color:#9ee0c0}.chat-row-more{display:grid;place-items:center;width:25px;height:25px;border:0;border-radius:6px;background:transparent;color:#9dbbac;font:700 9px inherit;cursor:pointer}.chat-row-more:hover{background:#ffffff1a;color:#fff}.chat-row-menu{position:absolute;right:0;top:29px;z-index:45;width:174px;padding:7px;border:1px solid rgba(216,236,227,.22);border-radius:9px;background:#f9fcfa;color:#20372d;box-shadow:0 15px 38px #00000047}.chat-row-menu strong{display:block;padding:5px 7px;color:#71877d;font-size:7px;letter-spacing:.8px;text-transform:uppercase}.chat-row-menu button{display:block;width:100%;padding:7px;border:0;border-radius:6px;background:transparent;color:#284137;text-align:left;font:600 8px inherit;cursor:pointer}.chat-row-menu button:hover{background:#e8f3ed}.chat-row-menu button.delete{margin-top:4px;border-top:1px solid #dde7e2;border-radius:0;color:#a43f37}.chat-subfolder{margin:5px 0;padding:3px 0;border-top:1px solid rgba(190,224,208,.12)}.chat-subfolder-toggle{display:grid;grid-template-columns:12px minmax(0,1fr) auto;gap:4px;align-items:center;width:100%;padding:7px 5px;border:0;background:transparent;color:#d9e8e1;text-align:left;cursor:pointer}.chat-subfolder-toggle span{color:#91b4a5;font-size:8px;transition:transform .18s}.chat-subfolder-toggle strong{overflow:hidden;font-size:8px;text-overflow:ellipsis;white-space:nowrap}.chat-subfolder-toggle small{padding:2px 5px;border-radius:8px;background:#ffffff14;color:#a9c5b8;font-size:7px}.chat-subfolder.collapsed .chat-subfolder-toggle span{transform:rotate(-90deg)}.chat-subfolder.collapsed .subfolder-chat-list{display:none}.subfolder-chat-list{padding-left:8px}.course-folder-actions{display:grid;grid-template-columns:1fr 1fr;gap:3px;margin-top:4px;padding-top:7px;border-top:1px solid rgba(190,224,208,.12)}.course-folder-actions .course-chat-item{display:flex;gap:5px;color:#9dd3ba;font-size:8px}.subfolder-new{margin:2px 0 5px}.subfolder-create-form{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:4px;margin-top:6px}.subfolder-create-form input{min-width:0;padding:7px;border:1px solid rgba(216,236,227,.22);border-radius:6px;background:#ffffff14;color:#fff;font:8px inherit}.subfolder-create-form input::placeholder{color:#8eaa9e}.subfolder-create-form button{border:0;border-radius:6px;background:#76cfa7;color:#123a29;padding:0 8px;font:700 8px inherit;cursor:pointer}.subfolder-create-form button:last-child{background:transparent;color:#b8cec4;font-size:13px}.secondary-nav{margin-top:15px;padding-top:15px;border-top:1px solid rgba(220,239,230,.18)}.storage-usage-card{display:grid;grid-template-columns:minmax(230px,1fr) minmax(180px,.85fr) auto;gap:18px;align-items:center;margin:18px 0 0;padding:14px 16px;border:1px solid var(--line);border-radius:13px;background:color-mix(in srgb,var(--paper) 84%,var(--mint));box-shadow:0 6px 20px #1734270b}.storage-usage-copy{display:flex;min-width:0;flex-direction:column}.storage-usage-copy>span{color:var(--green);font-size:7px;font-weight:800;letter-spacing:1.3px}.storage-usage-copy strong{margin:4px 0 2px;color:var(--ink);font-size:11px}.storage-usage-copy small{color:var(--muted);font-size:8px;line-height:1.4}.storage-meter{height:7px;overflow:hidden;border-radius:6px;background:color-mix(in srgb,var(--line) 72%,transparent)}.storage-meter i{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--green),#68c89e);transition:width .3s}.storage-usage-card.approaching .storage-meter i{background:#d79a3f}.storage-usage-card.limit-hit{border-color:color-mix(in srgb,var(--danger) 42%,var(--line));background:color-mix(in srgb,var(--paper) 91%,#ffe8e3)}.storage-usage-card.limit-hit .storage-meter i{background:var(--danger)}.storage-usage-card>button{border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--green);padding:8px 10px;font:700 8px inherit;cursor:pointer;white-space:nowrap}.material-card-actions .delete-document,.paper-study-actions .delete-document{margin-left:auto;background:transparent;color:var(--danger);border:1px solid color-mix(in srgb,var(--danger) 25%,var(--line))}.paper-study-actions .delete-document:hover,.material-card-actions .delete-document:hover{background:color-mix(in srgb,var(--danger) 8%,var(--paper))}@media(max-width:760px){.storage-usage-card{grid-template-columns:1fr auto}.storage-meter{grid-column:1/-1;grid-row:2}.course-chat-list{margin-left:29px}}@media(max-width:520px){.storage-usage-card{grid-template-columns:1fr}.storage-usage-card>button{justify-self:start}.storage-meter{grid-row:auto}.course-folder-actions{grid-template-columns:1fr}}.quiz-generating{display:grid;place-items:center;min-height:370px;padding:35px;text-align:center}.quiz-generating .upload-spinner{width:34px;height:34px;margin-bottom:16px}.quiz-generating h2{margin:0 0 8px}.quiz-generating p{max-width:430px;margin:0;color:var(--muted);font-size:10px;line-height:1.6}.quiz-grounding-notice{margin:4px 0 18px;padding:11px 13px;border:1px solid var(--line);border-radius:10px}.quiz-grounding-notice strong{display:block;color:var(--green);font-size:8px;letter-spacing:.4px}.quiz-grounding-notice p{margin:4px 0 0;color:var(--muted);font-size:8px;line-height:1.55}.quiz-grounding-notice.grounded{border-color:color-mix(in srgb,var(--green) 27%,var(--line));background:color-mix(in srgb,var(--mint) 58%,var(--paper))}.quiz-grounding-notice.general{border-color:#e3c990;background:#fff6df}.quiz-grounding-notice.general strong{color:#8b6223}.billing-modal{position:fixed;inset:0;z-index:1300;background:#091b169e;-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);display:grid;place-items:center;padding:24px}.billing-card{width:min(680px,100%);max-height:calc(100vh - 48px);overflow:auto;background:#fffdf8;border:1px solid #d8d9d2;border-radius:17px;box-shadow:0 28px 80px #0c231c45;padding:34px;position:relative}.billing-card h2{font:600 31px Fraunces;margin:8px 0 7px}.billing-intro{margin:0 0 20px;color:#6e7974;font-size:11px;line-height:1.55}.current-plan-card{display:grid;grid-template-columns:1fr auto;gap:3px 18px;align-items:center;padding:15px 17px;border:1px solid #d9e3dc;background:#eef6f1;border-radius:11px}.current-plan-card>span{font-size:7px;letter-spacing:1.5px;color:#668076}.current-plan-card>strong{grid-row:1/3;grid-column:2;font:600 22px Fraunces;color:#145b43}.current-plan-card>small{font-size:9px;color:#66736d}.account-billing-toggle{margin:19px 0 15px}.account-plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.account-plan-grid>button{min-width:0;text-align:left;background:#fff;border:1px solid #d9ddd6;border-radius:11px;padding:16px;cursor:pointer;color:#173d31;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.account-plan-grid>button:hover{transform:translateY(-2px);border-color:#24765b;box-shadow:0 9px 20px #18523f1a}.account-plan-grid>button.recommended{border-color:#23785b;background:#f4faf6}.account-plan-grid>button.current{box-shadow:inset 0 0 0 1px #176147;background:#e6f2eb}.account-plan-grid>button:disabled{cursor:default;transform:none;opacity:.62}.account-plan-grid span{display:block;min-height:20px;font-size:7px;letter-spacing:1px;color:#826b48;font-weight:700}.account-plan-grid strong{display:flex;align-items:baseline;margin:8px 0 7px;font-family:Fraunces}.account-plan-grid sup{font:600 12px DM Sans}.account-plan-grid b{font-size:29px}.account-plan-grid small{font:8px DM Sans;color:#7d8882}.account-plan-grid em{font-style:normal;font-size:9px;color:#62726b}.manage-billing{width:100%;margin-top:14px;border:1px solid #bfd2c6;background:#fff;color:#145b43;border-radius:9px;padding:11px;font:700 10px DM Sans;cursor:pointer}.billing-status{min-height:16px;margin:10px 0 0;text-align:center;color:#68756f;font-size:9px}.billing-status.error{color:#a23d35}.billing-status.success{color:#176147}.price-card>button.checkout-loading,[data-checkout-plan].checkout-loading{opacity:.68;cursor:wait}.topup-note strong:first-child{color:#176147}.hidden.billing-modal{display:none}.usage-overview{display:grid;grid-template-columns:1fr auto;gap:4px 18px;margin-top:9px;padding:12px 17px;border:1px solid #e0e2dc;background:#fff;border-radius:10px}.usage-overview>span{font-size:7px;letter-spacing:1.4px;color:#7b867f}.usage-overview>strong{grid-row:1/3;grid-column:2;text-align:right;font-size:10px;color:#214d3e}.usage-overview>small{font-size:8px;color:#728078}.usage-overview.limit-reached{border-color:#d8a49e;background:#fff6f4}.usage-overview.limit-reached>strong{color:#9a342c}.owner-access-card{margin-top:9px;padding:13px 15px;border:1px solid #d9e3dc;background:#f5faf7;border-radius:10px;display:grid;grid-template-columns:minmax(0,1fr) minmax(235px,.8fr);gap:14px;align-items:center}.owner-access-card>div:first-child{display:grid;gap:3px}.owner-access-card span{font-size:7px;letter-spacing:1.35px;color:#55776a}.owner-access-card strong{font:600 14px Fraunces;color:#174c3b}.owner-access-card small{font-size:8px;line-height:1.45;color:#718078}.owner-access-controls{display:flex;gap:7px}.owner-access-controls input{min-width:0;flex:1;border:1px solid #cad8cf;background:#fff;border-radius:8px;padding:10px 11px;color:#173d31;font:10px DM Sans;outline:none}.owner-access-controls input:focus{border-color:#176147;box-shadow:0 0 0 3px #1761471a}.owner-access-controls button{border:0;border-radius:8px;padding:10px 13px;background:#176147;color:#fff;font:700 9px DM Sans;cursor:pointer}.owner-access-controls button:disabled{opacity:.58;cursor:wait}.owner-access-card.active{border-color:#76a891;background:#eaf6ef}.owner-access-card.active .owner-access-controls{display:none}.owner-access-card.active small{color:#39715c}@media(max-width:620px){.owner-access-card{grid-template-columns:1fr}.owner-access-controls{width:100%}}@media(max-width:650px){.billing-modal{padding:12px}.billing-card{padding:26px 18px}.account-plan-grid{grid-template-columns:1fr}.account-plan-grid span{min-height:0}.current-plan-card{grid-template-columns:1fr}.current-plan-card>strong{grid-row:auto;grid-column:auto}.billing-card h2{font-size:27px}}.official-library-view{padding:42px 50px 70px;overflow:auto}.official-library-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.42fr);gap:30px;align-items:end}.official-library-hero h1{margin:8px 0 9px;font:600 clamp(32px,4vw,48px)/1.04 "Fraunces"}.official-library-hero h1 em{color:var(--green);font-style:italic}.official-library-hero p{max-width:690px;margin:0;color:var(--muted);font-size:10px;line-height:1.65}.official-library-trust{display:flex;gap:11px;align-items:center;padding:15px;border:1px solid color-mix(in srgb,var(--green) 22%,var(--line));border-radius:12px;background:color-mix(in srgb,var(--mint) 62%,var(--paper))}.official-library-trust>span{display:grid;place-items:center;flex:0 0 auto;width:31px;height:31px;border-radius:50%;background:var(--green);color:#fff;font-weight:800}.official-library-trust p{display:grid;gap:3px}.official-library-trust strong{color:var(--ink);font-size:9px}.official-library-trust small{color:var(--muted);font-size:7.5px;line-height:1.45}.official-library-filters{display:grid;grid-template-columns:repeat(4,minmax(120px,1fr)) minmax(170px,1.25fr) auto auto;gap:9px;align-items:end;margin:28px 0 17px;padding:14px;border:1px solid var(--line);border-radius:13px;background:var(--paper)}.official-library-filters label,.library-admin-fields label{display:grid;gap:5px;color:var(--muted);font-size:7px;font-weight:700;letter-spacing:.35px}.official-library-filters input,.library-admin-fields input{min-width:0;width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:color-mix(in srgb,var(--paper) 94%,var(--mint));color:var(--ink);font:9px DM Sans;outline:none}.official-library-filters input:focus,.library-admin-fields input:focus{border-color:var(--green);box-shadow:0 0 0 3px color-mix(in srgb,var(--green) 10%,transparent)}.official-library-filters>button,.library-admin-actions button{padding:10px 13px;border:1px solid var(--green);border-radius:8px;background:var(--green);color:#fff;font:700 8px DM Sans;cursor:pointer;white-space:nowrap}.official-library-filters>button.secondary{border-color:var(--line);background:transparent;color:var(--green)}.official-library-status{min-height:23px;color:var(--muted);font-size:9px}.official-paper-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.official-paper-card{display:flex;min-width:0;flex-direction:column;padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--paper);box-shadow:0 8px 24px #1731260d}.official-paper-card .official-paper-top{display:flex;justify-content:space-between;gap:10px;align-items:center}.official-source-badge,.official-year-badge{padding:5px 7px;border-radius:999px;font-size:7px;font-weight:800;letter-spacing:.5px}.official-source-badge{background:var(--mint);color:var(--green)}.official-year-badge{border:1px solid var(--line);color:var(--muted)}.official-paper-card h3{margin:14px 0 6px;font:600 18px/1.25 Fraunces}.official-paper-card>p{margin:0;color:var(--muted);font-size:8px;line-height:1.55}.official-paper-tags{display:flex;flex-wrap:wrap;gap:5px;margin:12px 0}.official-paper-tags span{padding:5px 7px;border-radius:7px;background:color-mix(in srgb,var(--mint) 52%,var(--paper));color:var(--green);font-size:7px}.official-paper-actions{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:13px}.official-paper-actions button,.official-paper-actions a{padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--green);font:700 8px DM Sans;text-decoration:none;cursor:pointer}.official-paper-actions button{border-color:var(--green);background:var(--green);color:#fff}.official-library-empty{grid-column:1/-1;padding:45px 24px;border:1px dashed var(--line);border-radius:14px;background:color-mix(in srgb,var(--paper) 88%,var(--mint));text-align:center}.official-library-empty h3{margin:0 0 6px;font:600 20px Fraunces}.official-library-empty p{margin:0;color:var(--muted);font-size:9px}.library-admin-panel{margin-top:35px;padding:22px;border:1px solid color-mix(in srgb,var(--gold) 32%,var(--line));border-radius:15px;background:color-mix(in srgb,var(--paper) 92%,#fff5dd)}.library-admin-heading{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}.library-admin-heading h2{margin:5px 0;font:600 24px Fraunces}.library-admin-heading p{max-width:680px;margin:0;color:var(--muted);font-size:9px;line-height:1.55}.library-admin-badge{padding:6px 9px;border-radius:8px;background:#8a682f;color:#fff;font-size:7px;font-weight:800;letter-spacing:.6px}.library-admin-fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px;margin-top:20px}.library-admin-fields label.wide{grid-column:span 3}.library-file-field{padding:12px;border:1px dashed color-mix(in srgb,var(--gold) 45%,var(--line));border-radius:9px}.library-file-field span{color:var(--muted);font-weight:500}.library-file-field small{color:var(--muted);font-size:7px}.library-admin-actions{display:flex;gap:12px;align-items:center;margin-top:14px}.library-admin-actions button:disabled{opacity:.58;cursor:wait}.library-admin-actions span{color:var(--muted);font-size:8px}.library-demand{margin-top:22px;padding-top:18px;border-top:1px solid color-mix(in srgb,var(--gold) 24%,var(--line))}.library-demand h3{margin:0 0 10px;font:600 16px Fraunces}.library-demand-list-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:7px;margin:6px 0;padding:9px 10px;border-radius:8px;background:#ffffff94}.library-demand-list-item strong{font-size:8px}.library-demand-list-item small{grid-column:1;color:var(--muted);font-size:7px}.library-demand-list-item b{grid-column:2;grid-row:1/3;align-self:center;color:#8a682f;font-size:9px}.library-admin-tabs{display:flex;flex-wrap:wrap;gap:7px;margin:20px 0 16px;padding:5px;border:1px solid color-mix(in srgb,var(--gold) 25%,var(--line));border-radius:11px;background:#ffffff80}.library-admin-tabs button{display:flex;gap:7px;align-items:center;padding:9px 12px;border:0;border-radius:8px;background:transparent;color:var(--muted);font:700 8px DM Sans;cursor:pointer}.library-admin-tabs button.active{background:var(--paper);color:var(--green);box-shadow:0 4px 15px #2a373014}.library-admin-tabs b{display:grid;place-items:center;min-width:17px;height:17px;padding:0 5px;border-radius:999px;background:color-mix(in srgb,var(--gold) 18%,var(--paper));color:#8a682f;font-size:7px}.library-admin-tab{padding-top:4px}.library-admin-section-head{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:12px}.library-admin-section-head h3,.library-run-log h3{margin:0 0 4px;font:600 17px Fraunces}.library-admin-section-head p{margin:0;color:var(--muted);font-size:8px;line-height:1.5}.library-admin-section-head button.secondary{padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--green);font:700 8px DM Sans;cursor:pointer}.library-review-list,.library-source-list{display:grid;gap:10px}.library-review-card,.library-source-card{padding:14px;border:1px solid var(--line);border-radius:11px;background:#ffffffa3}.library-review-top,.library-source-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.library-review-top h4,.library-source-top h4{margin:2px 0 4px;font:600 16px Fraunces}.library-review-top p,.library-source-top p{margin:0;color:var(--muted);font-size:8px}.library-review-badges,.library-source-badges{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:5px}.library-review-badges span,.library-source-badges span{padding:5px 7px;border-radius:999px;background:var(--mint);color:var(--green);font-size:7px;font-weight:800}.library-review-badges span.warning,.library-source-badges span.blocked{background:#fff0cf;color:#875e1b}.library-review-fields{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-top:12px}.library-review-fields label{display:grid;gap:4px;color:var(--muted);font-size:7px;font-weight:700}.library-review-fields input{min-width:0;width:100%;padding:8px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--ink);font:8px DM Sans}.library-review-fields label.wide{grid-column:span 2}.library-review-actions{display:flex;flex-wrap:wrap;gap:7px;align-items:center;margin-top:11px}.library-review-actions button,.library-review-actions a,.library-demand-list-item button{padding:7px 9px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--green);font:700 7.5px DM Sans;text-decoration:none;cursor:pointer}.library-review-actions button.approve{border-color:var(--green);background:var(--green);color:#fff}.library-review-actions button.reject{color:#9b3b37}.library-demand-list-item{grid-template-columns:minmax(0,1fr) auto auto}.library-demand-list-item button{grid-column:3;grid-row:1/3;align-self:center}.library-source-card a{color:var(--green);font-size:8px}.library-source-card>p{margin:10px 0 0;color:var(--muted);font-size:8px;line-height:1.5}.library-run-log{margin-top:18px;padding-top:15px;border-top:1px solid color-mix(in srgb,var(--gold) 24%,var(--line))}.library-log-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px;padding:8px 9px;border-radius:8px;background:#ffffff8c;font-size:8px}.library-log-row+.library-log-row{margin-top:5px}.library-log-row small{color:var(--muted)}@media(max-width:1180px){.official-library-filters{grid-template-columns:repeat(3,minmax(130px,1fr))}.official-paper-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:800px){.official-library-view{padding:28px 22px 55px}.official-library-hero{grid-template-columns:1fr}.official-library-filters,.library-admin-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.library-admin-fields label.wide{grid-column:span 2}.library-review-fields{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:560px){.official-library-filters,.official-paper-grid,.library-admin-fields,.library-review-fields{grid-template-columns:1fr}.library-admin-fields label.wide,.library-review-fields label.wide{grid-column:auto}.official-library-filters>button{width:100%}.library-admin-heading,.library-admin-actions,.library-admin-section-head,.library-review-top,.library-source-top{align-items:stretch;flex-direction:column}.library-review-badges,.library-source-badges{justify-content:flex-start}}.pricing-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;max-width:980px;margin-inline:auto}.price-card.popular{z-index:1;border:2px solid var(--green);background:linear-gradient(160deg,color-mix(in srgb,var(--mint) 72%,var(--paper)),var(--paper) 58%);box-shadow:0 22px 50px #1761472b;transform:translateY(-8px)}.popular-label{padding:7px 12px;font-size:7px;letter-spacing:.85px;box-shadow:0 6px 16px #17614733}.price-card>p{height:auto;min-height:22px;margin-bottom:5px}.price-billing-note{display:block;min-height:14px;margin:-2px 0 13px;color:var(--muted);font-size:7px;letter-spacing:.25px}.value-chip{margin:-2px 0 12px;padding:7px 9px;border-radius:8px;background:var(--green);color:#fff;font-size:7px;font-weight:700;line-height:1.35;text-align:center}@media(max-width:950px){.pricing-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.price-card.popular{transform:none}}@media(max-width:650px){.pricing-grid{grid-template-columns:1fr}}.official-link-library,.stored-official-library{margin-top:18px}.stored-official-library{margin-top:34px;padding-top:28px;border-top:1px solid var(--line)}.official-library-section-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:12px}.official-library-section-head .eyebrow{color:var(--gold);font-size:7px;font-weight:800;letter-spacing:1.5px}.official-library-section-head h2{margin:5px 0;font:600 24px/1.12 Fraunces}.official-library-section-head p{max-width:720px;margin:0;color:var(--muted);font-size:9px;line-height:1.6}.official-link-safety{flex:0 0 auto;padding:7px 9px;border:1px solid color-mix(in srgb,var(--green) 24%,var(--line));border-radius:999px;background:var(--mint);color:var(--green);font-size:7px;font-weight:800;letter-spacing:.5px}.official-link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.official-link-card{display:flex;min-width:0;flex-direction:column;padding:18px;border:1px solid color-mix(in srgb,var(--green) 20%,var(--line));border-radius:14px;background:linear-gradient(145deg,color-mix(in srgb,var(--paper) 96%,var(--mint)),var(--paper));box-shadow:0 8px 24px #1731260d}.official-link-card-top{display:flex;justify-content:space-between;gap:9px;align-items:center}.official-link-kind{color:var(--muted);font-size:7px;font-weight:700}.official-link-card h3{margin:14px 0 7px;font:600 18px/1.25 Fraunces}.official-link-card>p{margin:0;color:var(--muted);font-size:8px;line-height:1.58}.official-paper-actions a.official-link-primary{border-color:var(--green);background:var(--green);color:#fff}.library-official-link-form{margin-top:18px;padding-top:16px;border-top:1px solid color-mix(in srgb,var(--gold) 24%,var(--line))}.library-admin-fields select{min-width:0;width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:color-mix(in srgb,var(--paper) 94%,var(--mint));color:var(--ink);font:9px DM Sans;outline:none}.library-admin-fields select:focus{border-color:var(--green);box-shadow:0 0 0 3px color-mix(in srgb,var(--green) 10%,transparent)}@media(max-width:1180px){.official-link-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:560px){.official-link-grid{grid-template-columns:1fr}.official-library-section-head{align-items:stretch;flex-direction:column}.official-link-safety{align-self:flex-start}}.onboarding-panel{position:relative}.onboarding-close{position:absolute;right:16px;top:13px;width:34px;height:34px;border:0;border-radius:50%;background:transparent;color:var(--muted);font-size:24px;cursor:pointer}.onboarding-close:hover{background:color-mix(in srgb,var(--line) 62%,transparent);color:var(--ink)}.onboarding-footer-actions{display:flex;gap:9px;align-items:center}.onboarding-footer .onboarding-cancel{border:1px solid var(--line);background:transparent;color:var(--ink)}.modal{position:fixed;inset:0;z-index:220;display:grid;place-items:center;padding:20px;background:#081510ad;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.modal.hidden{display:none}.confirmation-card{width:min(440px,100%);padding:30px;border:1px solid color-mix(in srgb,var(--line) 85%,transparent);border-radius:17px;background:var(--paper);box-shadow:0 30px 80px #0000004d}.confirmation-card h2{margin:7px 0 9px;font:600 28px/1.12 Fraunces}.confirmation-card>p{margin:0;color:var(--muted);font-size:11px;line-height:1.55}.confirmation-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:22px}.confirmation-actions button{padding:10px 14px;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--ink);font:700 10px inherit;cursor:pointer}.confirmation-actions button:focus-visible{outline:3px solid color-mix(in srgb,var(--green) 24%,transparent);outline-offset:2px}.confirmation-actions .danger{border-color:#b94838;background:#b94838;color:#fff}.confirmation-actions button:disabled{cursor:wait;opacity:.55}.folder-delete-summary{display:flex;flex-wrap:wrap;gap:6px;margin-top:15px}.folder-delete-summary span{padding:6px 8px;border-radius:999px;background:color-mix(in srgb,var(--line) 52%,transparent);color:var(--muted);font-size:8px;font-weight:700}.confirmation-error{margin-top:13px!important;padding:9px 10px;border-radius:8px;background:#fff0ed;color:#a1362a!important}.study-tool-library{margin:30px 0}.study-tool-library+.study-tool-library{padding-top:22px;border-top:1px solid var(--line)}.chat-subfolder-heading{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:3px;align-items:center}.chat-subfolder-toggle{grid-template-columns:12px minmax(0,1fr) auto}.chat-subfolder-delete{display:grid;place-items:center;width:24px;height:24px;border:0;border-radius:6px;background:transparent;color:#9fc0b2;cursor:pointer}.chat-subfolder-delete:hover{background:#d156412e;color:#ffd8d0}.managed-course-card{position:relative;border:1px solid var(--line);border-radius:11px;background:#fff}.managed-course-card.selected{border-color:var(--green);background:#edf5f0}.managed-course-select{width:100%;min-height:65px;padding:14px 82px 14px 14px;border:0;background:transparent;text-align:left;cursor:pointer}.managed-course-select strong,.managed-course-select small{display:block}.managed-course-select strong{font:600 13px inherit}.managed-course-select small{margin-top:4px;color:var(--muted);font-size:10px}.managed-course-actions{position:absolute;right:8px;top:50%;display:flex;gap:3px;transform:translateY(-50%)}.managed-course-actions button{padding:5px;border:0;border-radius:5px;background:transparent;color:var(--muted);font:700 8px inherit;cursor:pointer}.managed-course-actions button:hover{background:var(--mint);color:var(--green)}.managed-course-actions button.danger:hover{background:#fff0ed;color:#a1362a}.request-form.editing button[type=submit]{background:var(--gold)}[data-document-drag-id]{cursor:grab}[data-document-drag-id]:active{cursor:grabbing}.personal-library-item[data-document-drag-id]{position:relative}.document-dragging{opacity:.48;transform:scale(.985)}.course-folder.document-drop-active,.chat-subfolder.document-drop-active{outline:2px solid #73d8ae;outline-offset:-2px;background:#5ccf9e2b;box-shadow:0 0 0 4px #5ccf9e12}.upload-zone.external-file-drop-active,.material-file-drop.external-file-drop-active,.composer-wrap.external-file-drop-active{outline:3px solid var(--green);outline-offset:4px;background:color-mix(in srgb,var(--mint) 72%,var(--paper))}.library-view{position:relative}.library-view.external-file-drop-active:after,.composer-wrap.external-file-drop-active:after{content:"Drop files to upload and auto-sort";position:absolute;z-index:25;inset:14px;display:grid;place-items:center;border:2px dashed var(--green);border-radius:16px;background:color-mix(in srgb,var(--paper) 90%,transparent);color:var(--green);font:700 13px DM Sans;letter-spacing:.2px;pointer-events:none;box-shadow:0 14px 35px #155c4526}.composer-wrap{position:relative}.composer-wrap.external-file-drop-active:after{inset:-7px}.personal-library-item[draggable=true]:before,.material-card[draggable=true]:before,.folder-paper-card[draggable=true]:before{content:"⋮⋮";position:absolute;top:8px;right:9px;color:var(--muted);font-size:11px;letter-spacing:-2px;opacity:.55}@media(max-width:560px){.onboarding-footer-actions{width:100%;justify-content:flex-end}.confirmation-actions{align-items:stretch;flex-direction:column}.confirmation-actions button{width:100%}.managed-course-select{padding-right:72px}.course-workspace-nav button{white-space:normal}}.flashcard-source-modal{position:fixed;inset:0;z-index:230;display:grid;place-items:center;padding:20px;background:#081510b3;-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px)}.flashcard-source-modal.hidden{display:none}.flashcard-source-card{position:relative;width:min(650px,100%);max-height:min(760px,92vh);overflow:auto;padding:32px;border:1px solid color-mix(in srgb,var(--line) 82%,transparent);border-radius:18px;background:var(--paper);box-shadow:0 30px 90px #00000057}.flashcard-source-card h2{margin:7px 0 8px;font:600 29px/1.12 Fraunces}.flashcard-source-card>p{margin:0;color:var(--muted);font-size:10px;line-height:1.55}.flashcard-source-toolbar{display:flex;justify-content:space-between;align-items:center;margin:20px 0 9px}.flashcard-source-toolbar button{border:0;background:none;color:var(--green);font:800 9px inherit;cursor:pointer}.flashcard-source-toolbar span{color:var(--muted);font-size:8px}.flashcard-source-list{display:grid;gap:8px}.flashcard-source-option{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:11px;align-items:center;padding:12px;border:1px solid var(--line);border-radius:11px;background:color-mix(in srgb,var(--paper) 93%,var(--mint));cursor:pointer}.flashcard-source-option:has(input:checked){border-color:color-mix(in srgb,var(--green) 55%,var(--line));background:color-mix(in srgb,var(--paper) 70%,var(--mint))}.flashcard-source-option input{width:17px;height:17px;accent-color:var(--green)}.flashcard-source-option span{display:flex;min-width:0;flex-direction:column}.flashcard-source-option strong{overflow:hidden;font-size:10px;text-overflow:ellipsis;white-space:nowrap}.flashcard-source-option small{margin-top:3px;color:var(--muted);font-size:8px}.flashcard-source-option b{padding:4px 6px;border-radius:999px;background:var(--paper);color:var(--gold);font-size:7px}.flashcard-source-empty{margin:8px 0;padding:22px;border:1px dashed var(--line);border-radius:11px;text-align:center}.flashcard-source-empty.hidden{display:none}.flashcard-source-empty p{margin:5px 0 0;color:var(--muted);font-size:9px}.flashcard-source-actions{display:flex;justify-content:space-between;gap:9px;margin-top:20px}.flashcard-source-actions button{padding:11px 14px;border:1px solid var(--green);border-radius:8px;background:var(--green);color:#fff;font:800 9px inherit;cursor:pointer}.flashcard-source-actions button.secondary{border-color:var(--line);background:transparent;color:var(--green)}.flashcard-source-actions button:disabled{cursor:not-allowed;opacity:.48}.flashcard-source-tags{display:flex;justify-content:center;flex-wrap:wrap;gap:5px;margin:13px 0 0}.flashcard-source-tags span{padding:4px 7px;border-radius:999px;background:var(--mint);color:var(--green);font-size:7px;font-weight:700}.flashcard-source-tags button{border:0;background:none;color:var(--green);font:800 7px inherit;text-decoration:underline;cursor:pointer}@media(max-width:560px){.flashcard-source-card{padding:27px 18px}.flashcard-source-actions{align-items:stretch;flex-direction:column}.flashcard-source-actions button{width:100%}.flashcard-source-option{grid-template-columns:auto minmax(0,1fr)}.flashcard-source-option>b{grid-column:2}}.composer-library-link{display:flex;align-items:center;gap:6px;padding:7px 9px;border-radius:8px;background:color-mix(in srgb,var(--mint) 72%,var(--paper));color:var(--green);font:700 9px DM Sans}.composer-library-link:hover{background:var(--mint)}.my-uploads-chat-action{margin-top:7px;padding:8px 10px;border:1px solid var(--green);border-radius:8px;background:var(--green);color:#fff;font:700 9px DM Sans;cursor:pointer}.library-storage-card{margin:14px 0 22px}.storage-usage-card.unlimited{border-color:color-mix(in srgb,var(--green) 32%,var(--line));background:linear-gradient(100deg,color-mix(in srgb,var(--mint) 65%,var(--paper)),var(--paper))}.storage-usage-card.unlimited .storage-meter i{background:linear-gradient(90deg,var(--green),var(--gold))}.uploads-route-card{display:flex;min-height:310px;flex-direction:column;align-items:center;justify-content:center}.streak.active{color:var(--green)}.help-center{position:fixed;left:272px;bottom:17px;z-index:170}.help-center-launcher{display:flex;align-items:center;gap:8px;padding:7px 12px 7px 7px;border:1px solid rgba(255,255,255,.25);border-radius:999px;background:#f8f5ed;color:#143f32;box-shadow:0 12px 35px #051a1347;font:800 10px DM Sans;cursor:pointer}.help-center-launcher>span{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--green);color:#fff;font:700 15px Fraunces}.help-center-panel{position:absolute;left:0;bottom:50px;display:grid;grid-template-rows:auto minmax(150px,1fr) auto auto auto;width:min(365px,calc(100vw - 28px));max-height:min(590px,calc(100vh - 90px));overflow:hidden;border:1px solid color-mix(in srgb,var(--line) 78%,transparent);border-radius:17px;background:var(--paper);color:var(--ink);box-shadow:0 26px 80px #071b1457}.help-center-panel>header{display:flex;justify-content:space-between;align-items:flex-start;padding:17px 18px 14px;border-bottom:1px solid var(--line);background:linear-gradient(135deg,color-mix(in srgb,var(--mint) 65%,var(--paper)),var(--paper))}.help-center-panel header span{color:var(--green);font-size:7px;font-weight:800;letter-spacing:1.4px}.help-center-panel header h2{margin:3px 0 0;font:600 20px Fraunces}.help-center-panel header button{width:28px;height:28px;border:0;border-radius:50%;background:transparent;color:var(--muted);font-size:20px;cursor:pointer}.help-center-messages{display:flex;min-height:180px;flex-direction:column;gap:9px;overflow-y:auto;padding:14px}.help-center-messages article{align-self:flex-start;max-width:88%;padding:9px 11px;border:1px solid var(--line);border-radius:4px 11px 11px;background:color-mix(in srgb,var(--mint) 45%,var(--paper))}.help-center-messages article.user{align-self:flex-end;border-color:color-mix(in srgb,var(--green) 24%,var(--line));border-radius:11px 4px 11px 11px;background:var(--green);color:#fff}.help-center-messages article.thinking{opacity:.65}.help-center-messages p{margin:0;font-size:9px;line-height:1.55}.help-center-chips{display:flex;gap:6px;overflow-x:auto;padding:0 14px 9px}.help-center-chips button{flex:0 0 auto;padding:6px 8px;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--green);font:700 7px DM Sans;cursor:pointer}.help-center-panel form{padding:11px 14px;border-top:1px solid var(--line)}.help-center-panel form>label{display:block;margin-bottom:5px;color:var(--muted);font-size:7px;font-weight:700}.help-center-panel form>div{display:flex;gap:7px}.help-center-panel input{min-width:0;flex:1;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);font:9px DM Sans;outline:0}.help-center-panel input:focus{border-color:var(--green);box-shadow:0 0 0 3px color-mix(in srgb,var(--green) 10%,transparent)}.help-center-panel form button{width:34px;border:0;border-radius:8px;background:var(--green);color:#fff;font-size:16px;cursor:pointer}.help-center-panel>small{padding:0 14px 11px;color:var(--muted);font-size:6.5px;text-align:center}@media(max-width:800px){.help-center{left:12px;bottom:12px}.help-center-panel{max-height:calc(100vh - 78px)}.help-center-launcher strong{display:none}.help-center-launcher{padding:6px}}.study-source-guidance{display:flex;gap:13px;margin:20px 0;padding:17px 19px;border:1px solid color-mix(in srgb,var(--gold) 42%,var(--line));border-radius:13px;background:color-mix(in srgb,#fff1cf 48%,var(--paper));color:var(--ink)}.study-source-guidance>span{display:grid;place-items:center;flex:0 0 31px;height:31px;border-radius:50%;background:var(--gold);color:#fff;font-weight:800}.study-source-guidance strong{display:block;font:600 15px Fraunces}.study-source-guidance p{margin:6px 0 0;color:var(--muted);font-size:8.5px;line-height:1.6}.study-source-guidance b{color:var(--ink)}.study-set-management{display:flex;align-items:center;gap:8px;margin:10px 0 9px}.study-set-management button{padding:6px 9px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--green);font:700 7.5px DM Sans;cursor:pointer}.study-set-management button.danger{margin-left:auto;color:var(--danger)}.study-set-management button:disabled{cursor:not-allowed;opacity:.4}.study-set-management span{color:var(--muted);font-size:7.5px}.study-set-card{display:grid;grid-template-columns:38px minmax(0,1fr);gap:0;padding:0;overflow:hidden;cursor:default}.study-set-card.selected{border-color:color-mix(in srgb,var(--green) 62%,var(--line));box-shadow:0 0 0 2px color-mix(in srgb,var(--green) 9%,transparent)}.study-set-select{display:grid;place-items:center;border-right:1px solid var(--line);background:color-mix(in srgb,var(--mint) 35%,var(--paper));cursor:pointer}.study-set-select input{position:absolute;opacity:0;pointer-events:none}.study-set-select span{display:grid;place-items:center;width:18px;height:18px;border:1px solid color-mix(in srgb,var(--muted) 55%,var(--line));border-radius:5px;background:var(--paper);color:transparent;font-size:10px}.study-set-select input:checked+span{border-color:var(--green);background:var(--green);color:#fff}.study-set-select:focus-within span{box-shadow:0 0 0 3px color-mix(in srgb,var(--green) 13%,transparent)}.study-set-open{display:flex;align-items:center;gap:10px;min-width:0;padding:12px;border:0;background:transparent;color:var(--ink);text-align:left;cursor:pointer}.study-set-open:hover{background:color-mix(in srgb,var(--mint) 28%,transparent)}.study-set-open>span:nth-child(2){display:flex;min-width:0;flex:1;flex-direction:column}.study-set-open small{color:var(--gold);font-size:7px;letter-spacing:.6px}.study-set-open strong{margin:2px 0;font:600 12px Fraunces}.study-set-open em{color:var(--muted);font-size:8px;font-style:normal}.study-set-open>b{margin-left:auto;color:var(--green);font-size:8px;white-space:nowrap}.source-quality-guide{margin:15px 0 2px;padding:12px 14px;border:1px solid color-mix(in srgb,var(--gold) 38%,var(--line));border-radius:10px;background:color-mix(in srgb,#fff1cf 40%,var(--paper))}.source-quality-guide strong{font-size:9px}.source-quality-guide p{margin:4px 0 0;color:var(--muted);font-size:8px;line-height:1.55}.flashcard-source-option.recommended>b{color:var(--green)}.flashcard-source-option.not-recommended{border-style:dashed;opacity:.82}.flashcard-source-option.not-recommended>b{color:var(--danger)}.paper-study-actions>small{display:block;color:var(--muted);font-size:7px;line-height:1.4}@media(max-width:560px){.study-source-guidance{padding:14px}.study-set-management{flex-wrap:wrap}.study-set-management button.danger{margin-left:0}.study-set-card{grid-template-columns:34px minmax(0,1fr)}.study-set-open>b{display:none}}.app-boot{position:fixed;inset:0;z-index:3000;display:none;place-items:center;overflow:hidden;background:radial-gradient(circle at 50% 42%,#eef9f3 0,#f7f3e9 38%,#eee8dc);color:#173d31}.app-boot:before,.app-boot:after{content:"";position:absolute;width:520px;height:520px;border:1px solid rgba(23,97,71,.09);border-radius:48% 52% 58% 42%;animation:bootAmbient 11s linear infinite}.app-boot:after{width:700px;height:700px;border-color:#ae703512;animation-direction:reverse;animation-duration:17s}.app-boot-card{position:relative;z-index:1;display:flex;width:min(390px,calc(100vw - 42px));flex-direction:column;align-items:center;padding:34px 38px 30px;border:1px solid rgba(23,97,71,.13);border-radius:24px;background:#fffdf8d6;box-shadow:0 30px 90px #18382b21;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);text-align:center}.app-boot-orbit{position:relative;display:grid;width:78px;height:78px;margin-bottom:20px;place-items:center;border:1px solid rgba(23,97,71,.16);border-radius:50%}.app-boot-orbit:before,.app-boot-orbit:after{content:"";position:absolute;inset:9px;border:1px dashed rgba(23,97,71,.18);border-radius:50%;animation:bootSpin 5s linear infinite}.app-boot-orbit:after{inset:-7px;border-style:solid;border-color:transparent rgba(194,132,66,.35) transparent rgba(23,97,71,.25);animation-duration:2.7s;animation-direction:reverse}.app-boot-orbit i{position:absolute;top:4px;width:8px;height:8px;border-radius:50%;background:#c18848;box-shadow:0 0 18px #c18848a6}.app-boot-orbit b{font:italic 600 30px Fraunces}.app-boot-card>strong{font:600 25px Fraunces}.app-boot-card>small{margin-top:7px;color:#68766f;font-size:11px;line-height:1.5}.app-boot-progress{width:100%;height:4px;margin-top:24px;overflow:hidden;border-radius:999px;background:#e3e7e1}.app-boot-progress i{display:block;width:38%;height:100%;border-radius:inherit;background:linear-gradient(90deg,#176147,#70c39d,#c28a4a);animation:bootProgress 1.25s ease-in-out infinite}@keyframes bootSpin{to{transform:rotate(360deg)}}@keyframes bootAmbient{to{transform:rotate(360deg)}}@keyframes bootProgress{0%{transform:translate(-110%)}to{transform:translate(300%)}}.marketing-site{background:radial-gradient(circle at 18% 11%,rgba(208,232,219,.48),transparent 26%),radial-gradient(circle at 83% 20%,rgba(239,214,170,.28),transparent 29%),#f8f5ed}.marketing-nav{position:relative;z-index:12}.marketing-nav:after{content:"";position:absolute;right:0;bottom:-1px;left:0;height:1px;background:linear-gradient(90deg,transparent,#6fa88f 25%,#d2a463 72%,transparent);opacity:.42}.hero-section{position:relative}.hero-section:before{content:"";position:absolute;z-index:0;right:-180px;top:-110px;width:620px;height:620px;border:1px solid rgba(23,97,71,.08);border-radius:44% 56% 52% 48%;animation:heroOrbit 20s linear infinite}.hero-copy,.hero-product-card{position:relative;z-index:1}.hero-copy h1{text-wrap:balance}.hero-proof{display:flex;flex-wrap:wrap;gap:8px;margin:3px 0 13px}.hero-proof span{padding:7px 9px;border:1px solid rgba(23,97,71,.13);border-radius:999px;background:#ffffff8a;color:#6b7871;font-size:9px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.hero-proof b{color:#176147}.hero-product-card{box-shadow:0 38px 90px #1c372b2e,0 0 0 7px #ffffff61;animation:heroCardFloat 6s ease-in-out infinite}.hero-product-card:after{content:"";position:absolute;inset:-60% auto -60% -28%;width:18%;transform:rotate(18deg);background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);animation:heroShine 7.5s ease-in-out infinite}.live-tag:before{content:"";display:inline-block;width:6px;height:6px;margin-right:5px;border-radius:50%;background:#31a778;box-shadow:0 0 0 5px #31a7781c;animation:livePulse 1.8s ease-in-out infinite}.demo-wave i{animation-duration:.68s}.trust-strip{padding:28px 0 30px;overflow:hidden;background:linear-gradient(115deg,#102f26,#184b3c 55%,#173b33)}.trust-strip>span{margin-bottom:20px}.curriculum-marquee{position:relative;width:100%;overflow:hidden}.curriculum-marquee:before,.curriculum-marquee:after{content:"";position:absolute;z-index:2;top:0;bottom:0;width:110px;pointer-events:none}.curriculum-marquee:before{left:0;background:linear-gradient(90deg,#12382d,transparent)}.curriculum-marquee:after{right:0;background:linear-gradient(-90deg,#173f35,transparent)}.curriculum-track{display:flex!important;width:max-content;justify-content:flex-start!important;gap:12px!important;flex-wrap:nowrap!important;animation:curriculumGlide 36s linear infinite}.curriculum-track:hover{animation-play-state:paused}.curriculum-track article{display:grid;grid-template-columns:34px minmax(130px,1fr);grid-template-rows:auto auto;column-gap:10px;width:215px;padding:12px 15px;border:1px solid rgba(203,232,218,.12);border-radius:12px;background:#ffffff0e;text-align:left}.curriculum-track article i{grid-row:1/3;display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:#7cd3ae1f;color:#8ce0ba;font:800 7px DM Sans;letter-spacing:.7px}.curriculum-track article b{font:600 14px Fraunces;color:#f2f8f5}.curriculum-track article small{margin-top:2px;color:#9eb9ae;font-size:8px}.how-grid article{transition:transform .22s,box-shadow .22s}.how-grid article:hover{z-index:1;transform:translateY(-5px);box-shadow:0 18px 45px #163a2b1f}@keyframes heroOrbit{to{transform:rotate(360deg)}}@keyframes heroCardFloat{0%,to{transform:rotate(1deg) translateY(0)}50%{transform:rotate(.2deg) translateY(-9px)}}@keyframes heroShine{0%,62%{left:-28%;opacity:0}72%{opacity:1}88%,to{left:115%;opacity:0}}@keyframes livePulse{50%{box-shadow:0 0 0 8px #31a77800}}@keyframes curriculumGlide{to{transform:translate(calc(-50% - 6px))}}.app-shell{grid-template-columns:312px minmax(0,1fr)}.sidebar{padding:25px 18px 18px}.nav-label{font-size:10.5px}.course-folder-button{grid-template-columns:35px minmax(0,1fr) 16px;padding:11px 9px}.course-folder-icon{width:35px;height:35px;font-size:16px}.course-folder-button strong{font-size:12px;line-height:1.35}.course-folder-button small{font-size:9px;line-height:1.45}.course-chat-list{padding-left:39px}.course-chat-item{min-height:33px}.course-chat-item span:last-child{font-size:10px}.course-chat-item span:first-child,.chat-subfolder-toggle strong{font-size:10px}.chat-subfolder-toggle small{font-size:8.5px}.course-folder-actions .course-chat-item{font-size:9.5px}.secondary-nav .nav-item{font-size:13px}.course-workspace-nav{gap:7px;padding:7px 8px}.course-workspace-nav>div{grid-template-columns:9px minmax(140px,1fr);padding:2px 12px}.course-workspace-nav strong{font-size:12px}.course-workspace-nav small{font-size:9px}.course-workspace-nav>button{padding:10px 15px;font-size:11px}.course-workspace-nav>button span{min-width:20px;height:20px;font-size:8.5px}.lesson-header p{font-size:15px;line-height:1.6}.bubble p{font-size:15.5px}.message-actions button{font-size:11.5px}.hint{font-size:10.5px}.personal-library-group header small,.personal-library-item p,.study-source-guidance p,.materials-heading p{font-size:10px}.personal-library-item>div>small,.study-set-open small{font-size:8.5px}.personal-library-item strong,.study-set-open strong{font-size:13px}.study-set-open em{font-size:9.5px}.course-library-overview{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:20px 0}.course-library-overview>div{position:relative;display:flex;min-height:100px;flex-direction:column;justify-content:flex-end;padding:15px 16px;overflow:hidden;border:1px solid var(--line);border-radius:13px;background:linear-gradient(145deg,color-mix(in srgb,var(--paper) 95%,var(--mint)),color-mix(in srgb,var(--mint) 55%,var(--paper)))}.course-library-overview>div:after{content:"";position:absolute;right:-20px;top:-25px;width:72px;height:72px;border:1px solid color-mix(in srgb,var(--green) 15%,transparent);border-radius:50%}.course-library-overview span{color:var(--green);font-size:8px;font-weight:800;letter-spacing:1.1px}.course-library-overview strong{margin:7px 0 2px;font:600 27px Fraunces}.course-library-overview small{color:var(--muted);font-size:9px}.course-source-shelf{margin:27px 0 24px}.course-source-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.course-source-card{display:grid;grid-template-columns:38px minmax(0,1fr) auto;gap:11px;align-items:center;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:var(--paper)}.course-source-card>span{display:grid;place-items:center;width:38px;height:38px;border-radius:9px;background:var(--mint);color:var(--green);font-size:16px}.course-source-card.paper>span{background:#f4e8d4;color:#8c642c}.course-source-card>div{min-width:0}.course-source-card small,.course-source-card strong,.course-source-card p{display:block}.course-source-card small{color:var(--gold);font-size:7.5px;font-weight:800;letter-spacing:1px}.course-source-card strong{overflow:hidden;margin:3px 0;color:var(--ink);font:600 13px Fraunces;text-overflow:ellipsis;white-space:nowrap}.course-source-card p{overflow:hidden;margin:0;color:var(--muted);font-size:9px;text-overflow:ellipsis;white-space:nowrap}.course-source-card>button,.course-source-empty>button{padding:7px 9px;border:0;border-radius:7px;background:var(--mint);color:var(--green);font:800 8px DM Sans;cursor:pointer}.course-source-empty{grid-column:1/-1;display:flex;gap:12px;align-items:center;padding:18px;border:1px dashed color-mix(in srgb,var(--muted) 35%,var(--line));border-radius:12px;background:color-mix(in srgb,var(--paper) 75%,transparent)}.course-source-empty>span{display:grid;place-items:center;width:38px;height:38px;border-radius:9px;background:var(--mint);color:var(--green)}.course-source-empty>div{flex:1}.course-source-empty strong{font-size:11px}.course-source-empty p{margin:3px 0;color:var(--muted);font-size:9px;line-height:1.45}.bubble p strong{font-weight:750;color:color-mix(in srgb,var(--ink) 88%,var(--green))}.bubble p code{padding:2px 5px;border-radius:5px;background:color-mix(in srgb,var(--mint) 58%,var(--paper));color:var(--green);font:600 .92em ui-monospace,SFMono-Regular,Consolas,monospace}.math-block{display:flex;align-items:center;justify-content:center;min-height:64px;margin:14px 0;padding:14px 18px;border:1px solid color-mix(in srgb,var(--green) 19%,var(--line));border-left:4px solid var(--green);border-radius:4px 12px 12px 4px;background:linear-gradient(120deg,color-mix(in srgb,var(--mint) 48%,var(--paper)),var(--paper));color:var(--ink);font:500 20px/1.5 "Cambria Math","STIX Two Math",serif;letter-spacing:.2px;overflow-x:auto}.math-inline{display:inline-flex;align-items:center;margin:0 2px;padding:1px 4px;border-radius:5px;background:color-mix(in srgb,var(--mint) 48%,transparent);font:500 1.04em "Cambria Math","STIX Two Math",serif}.math-frac{display:inline-flex;flex-direction:column;align-items:stretch;margin:0 .18em;vertical-align:middle;text-align:center}.math-frac>span:first-child{padding:0 .2em .05em;border-bottom:1.4px solid currentColor}.math-frac>span:last-child{padding:.05em .2em 0}.math-root{display:inline-flex;align-items:flex-start}.math-root>span{padding:.02em .15em 0;border-top:1.3px solid currentColor}.math-roman{font-family:DM Sans,sans-serif;font-size:.82em}.math-block sup,.math-inline sup,.math-block sub,.math-inline sub{font-size:.68em}.help-center{left:326px;bottom:20px}.help-center-launcher{position:relative;display:grid;grid-template-columns:42px auto;grid-template-rows:auto auto;gap:1px 10px;padding:8px 14px 8px 8px;border-color:color-mix(in srgb,var(--green) 22%,transparent);background:#fffdf8f0;box-shadow:0 15px 42px #051a133b;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);font-size:11px;animation:atlasPalFloat 4s ease-in-out infinite}.help-center-launcher:hover{transform:translateY(-2px);box-shadow:0 19px 50px #051a1347}.help-center-launcher .atlas-pal-orb{grid-row:1/3;position:relative;display:grid;width:42px;height:42px;place-items:center;overflow:visible;border:0;border-radius:50%;background:conic-gradient(from 30deg,#39d9aa,#398cff,#9456ec,#e760ad,#e7b64f,#39d9aa);color:#fff;box-shadow:0 0 0 5px #25856314,0 7px 16px #1a5c4538}.atlas-pal-orb:before,.atlas-pal-orb:after{content:"";position:absolute;inset:-5px;border:1px solid rgba(51,176,132,.25);border-radius:50%;animation:atlasPalRipple 2.4s ease-out infinite}.atlas-pal-orb:after{animation-delay:1.2s}.atlas-pal-orb i{position:absolute;inset:5px;border-radius:50%;background:radial-gradient(circle at 35% 28%,rgba(255,255,255,.65),transparent 26%),#176147}.atlas-pal-orb b{position:relative;z-index:1;font:italic 600 17px Fraunces}.help-center-launcher>strong{align-self:end}.help-center-launcher>small{color:#75817b;font-size:8px;white-space:nowrap}.help-center-panel{bottom:65px;width:min(410px,calc(100vw - 28px));max-height:min(650px,calc(100vh - 95px));grid-template-rows:auto minmax(190px,1fr) auto auto auto;border-radius:20px;box-shadow:0 30px 90px #071b1452;transform-origin:bottom left}.help-center.open .help-center-panel{animation:atlasPalOpen .32s cubic-bezier(.2,.8,.2,1)}.help-center-panel>header{padding:19px 20px 16px}.atlas-pal-heading{display:flex;gap:10px;align-items:center}.atlas-pal-mini{display:grid!important;width:34px;height:34px;place-items:center;border-radius:50%;background:linear-gradient(145deg,#1b7658,#154a3a);color:#fff!important;font:italic 600 15px Fraunces!important;letter-spacing:0!important;box-shadow:0 7px 18px #155c452b}.atlas-pal-heading>div>span{font-size:8px}.help-center-panel header h2{font-size:23px}.help-center-messages{min-height:220px;gap:12px;padding:17px}.help-center-messages article{max-width:91%;padding:11px 13px}.help-center-messages p{font-size:11.5px;line-height:1.62}.help-center-chips{gap:7px;padding:0 16px 12px}.help-center-chips button{padding:7px 10px;font-size:8.5px}.help-center-panel form{padding:13px 16px}.help-center-panel form>label{margin-bottom:7px;font-size:8.5px}.help-center-panel input{padding:11px 12px;font-size:11px}.help-center-panel>small{padding:0 16px 13px;font-size:8px}.help-center-panel form button{width:39px}.help-center-messages article.support{position:relative;margin-left:9px}.help-center-messages article.support:before{content:"";position:absolute;left:-10px;top:13px;width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px color-mix(in srgb,var(--green) 10%,transparent)}@keyframes atlasPalFloat{50%{translate:0 -4px}}@keyframes atlasPalRipple{0%{scale:.8;opacity:.55}75%,to{scale:1.3;opacity:0}}@keyframes atlasPalOpen{0%{transform:translateY(15px) scale(.96)}to{transform:none}}@media(max-width:1050px){.app-shell{grid-template-columns:280px minmax(0,1fr)}.help-center{left:292px}.course-library-overview{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:800px){.help-center{left:12px}.course-source-grid{grid-template-columns:1fr}.course-workspace-nav>div{min-width:180px}.sidebar{width:280px}.hero-product-card{animation:none}}@media(max-width:560px){.course-library-overview{grid-template-columns:1fr 1fr}.course-library-overview>div{min-height:88px}.course-source-empty{align-items:flex-start;flex-wrap:wrap}.course-source-empty>button{margin-left:50px}.help-center-launcher{display:flex;padding:7px}.help-center-launcher>strong,.help-center-launcher>small{display:none}.help-center-panel{bottom:59px}.math-block{justify-content:flex-start;padding:12px;font-size:18px}.hero-proof{justify-content:center}.curriculum-marquee:before,.curriculum-marquee:after{width:45px}}@media(prefers-reduced-motion:reduce){.app-boot:before,.app-boot:after,.app-boot-orbit:before,.app-boot-orbit:after,.app-boot-progress i,.hero-section:before,.hero-product-card,.hero-product-card:after,.curriculum-track,.live-tag:before,.help-center-launcher,.atlas-pal-orb:before,.atlas-pal-orb:after{animation:none!important}.curriculum-track{transform:none}.curriculum-marquee{overflow-x:auto}}.diagram-card-actions{display:flex;align-items:center;gap:7px}.diagram-expand{border:1px solid color-mix(in srgb,var(--green) 25%,var(--line));border-radius:8px;background:var(--paper);color:var(--green);padding:7px 10px;font:700 8px inherit;cursor:pointer;transition:transform .18s ease,background .18s ease}.diagram-expand:hover{background:var(--mint);transform:translateY(-1px)}.interactive-diagram-card,.diagram-stage,.diagram-svg,.diagram-point,.diagram-curve,.diagram-vector,.diagram-label{transition:width .28s cubic-bezier(.22,.7,.25,1),height .28s cubic-bezier(.22,.7,.25,1),transform .28s cubic-bezier(.22,.7,.25,1),opacity .22s ease,stroke .22s ease,fill .22s ease}body.diagram-expanded{overflow:hidden}.interactive-diagram-card.expanded{position:fixed;inset:18px;z-index:220;display:flex;width:auto;max-width:none;height:auto;max-height:none;margin:0;flex-direction:column;border-radius:20px;box-shadow:0 28px 90px #0d22194d}.interactive-diagram-card.expanded .diagram-stage{min-height:0;flex:1}.interactive-diagram-card.expanded .diagram-svg{width:100%;height:min(68vh,720px);max-height:none}@media(max-width:1050px){.app-shell{grid-template-columns:270px minmax(0,1fr)}}@media(max-width:800px){.app-shell{display:block}.course-workspace-nav>div{position:sticky;left:0;background:var(--paper)}}@media(max-width:560px){.course-workspace-nav{margin-top:12px}.course-workspace-nav>div{display:none}.attachment-inline-card,.upload-mismatch-card{width:100%}.attach-menu{left:-6px}.interactive-diagram-card.expanded{inset:8px;border-radius:14px}.interactive-diagram-card.expanded .diagram-svg{height:56vh}}@media(prefers-reduced-motion:reduce){.interactive-diagram-card,.diagram-stage,.diagram-svg,.diagram-point,.diagram-curve,.diagram-vector,.diagram-label{transition:none!important}}
