:root{color-scheme:dark;--muted-ui:#b3b0a8;--line:#41403a;--panel:#2e2e2b;--safe-top:0px;--safe-bottom:0px}
*{box-sizing:border-box}body{margin:0;background:var(--product-bg);color:var(--on-dark);font-family:var(--font-sans);font-weight:400}button,input,textarea,select{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer;font-weight:500}button:disabled{opacity:.55;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid #d7a591;outline-offset:4px}a{color:inherit;text-decoration:none}p{color:var(--muted-ui);font-size:14px;line-height:1.65;margin:0}h1,h2,h3{font-weight:400;margin:0}h1,h2{font-family:var(--font-serif);letter-spacing:-1px;line-height:1.12}h1{font-size:48px}h2{font-size:34px}h3{font-size:16px;font-weight:500;line-height:1.45}small{font-size:12px;color:var(--muted-ui)}svg.icon{width:22px;height:22px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round;flex:none}.brand{font-family:var(--font-serif);font-size:28px;letter-spacing:-1px;display:flex;align-items:center;gap:9px}.brand-dot{font-family:Georgia,serif;font-size:30px;color:var(--slate-100)}.eyebrow{font-size:11px;letter-spacing:1.6px;text-transform:uppercase;color:var(--muted-ui);font-weight:500}.top{height:82px;display:flex;align-items:center;justify-content:space-between;padding:0 32px;border-bottom:1px solid var(--product-stroke);gap:12px}.topmeta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--muted-ui)}.avatar{display:grid;place-items:center;width:36px;height:36px;border:1px solid var(--line);border-radius:50%;color:var(--slate-100);background:transparent}.shell{max-width:1080px;margin:auto;padding-top:var(--safe-top)}main.content{max-width:760px;padding:36px 28px 128px;margin:auto}.heading{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:28px}.heading .eyebrow{margin-bottom:12px}.date-label{font-size:13px;color:var(--muted-ui);white-space:nowrap}.pill{border:1px solid var(--line);border-radius:30px;padding:7px 12px;font-size:12px;display:inline-flex;align-items:center;gap:6px;color:var(--slate-200);background:transparent}.primary{background:var(--brand-coral);color:#191815;border:1px solid transparent;border-radius:8px;padding:15px 20px;display:inline-flex;justify-content:center;align-items:center;gap:16px;min-height:50px;font-weight:500}.primary:hover{background:var(--brand-coral-hover)}.primary:active{background:var(--brand-coral-active)}.secondary,.ghost{background:transparent;color:var(--on-dark);border:1px solid var(--line);border-radius:8px;padding:13px 17px;min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px}.secondary:hover,.ghost:hover{background:var(--product-overlay)}.ghost{border-color:transparent;color:var(--muted-ui);padding:10px}.wide{width:100%}.row{display:flex;gap:10px;align-items:center}.between{justify-content:space-between}.stack{display:grid;gap:16px}.gap{margin-top:24px}.quiet{color:var(--muted-ui)}.intro{display:grid;grid-template-columns:1.05fr 1fr;min-height:620px;gap:56px;align-items:center;padding:64px 52px}.intro-copy h1{font-size:58px;margin:20px 0 22px;max-width:470px}.intro-copy>p{max-width:320px}.intro-art{width:140px;height:140px;margin-top:34px;background:var(--cream-soft);border-radius:16px;overflow:hidden}.intro-art img{width:100%;height:100%;object-fit:contain}.onboard{padding:30px;background:var(--product-sidebar);border:1px solid var(--line);border-radius:16px}.progress{display:flex;gap:6px;margin-bottom:28px}.progress span{height:3px;flex:1;background:var(--line)}.progress span.on{background:var(--slate-100)}.onboard h2{font-size:30px;margin:10px 0 12px}.onboard label{display:block;font-size:13px;color:var(--slate-200);margin-bottom:8px}.onboard input,textarea,select{border:1px solid var(--line);background:var(--product-input);color:var(--on-dark);border-radius:8px;padding:14px;width:100%;font-size:16px;min-height:48px}input::placeholder,textarea::placeholder{color:#8f8c84}.onboard .field{margin:24px 0}.fine{font-size:12px;line-height:1.6;margin-top:18px}.choice{width:100%;display:flex;align-items:center;gap:16px;text-align:left;padding:17px;background:transparent;border:1px solid var(--line);border-radius:10px;color:var(--on-dark)}.choice.selected{border-color:var(--slate-100);background:var(--product-overlay)}.letter{display:grid;place-items:center;min-width:42px;height:42px;border:1px solid var(--line);border-radius:8px;font:26px var(--font-serif);color:var(--slate-100)}.choice small{display:block;margin-top:5px}.choice .check{margin-left:auto}.group-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:20px 0}.group-grid button{background:transparent;border:1px solid var(--line);border-radius:8px;padding:12px 4px;color:var(--on-dark)}.group-grid button.selected{border-color:var(--slate-100);background:var(--slate-100);color:var(--ink)}.review{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;margin:22px 0;display:grid;gap:12px}.onboard .stepnav{display:flex;gap:8px;margin-top:24px}.stepnav .primary{flex:1}.footer-note{padding:0 24px 28px;display:flex;align-items:center;justify-content:center;gap:7px;font-size:12px;color:var(--muted-ui)}.spotlight{background:var(--cream-card);color:var(--ink);border-radius:14px;padding:28px;margin-bottom:20px}.spotlight .eyebrow,.spotlight small,.spotlight p{color:var(--muted)}.spotlight h2{font-size:30px;margin:18px 0 14px;max-width:520px}.spotlight .pill{border-color:#cbc4b7;color:var(--body)}.spotlight .row{flex-wrap:wrap}.spotlight footer{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:26px}.spotlight .icon{width:18px;height:18px}.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.quick{padding:22px;border:1px solid var(--line);border-radius:12px;background:transparent;color:var(--on-dark);text-align:left;min-height:138px}.quick .icon{margin-bottom:16px;color:var(--slate-100)}.quick h3{margin-bottom:7px}.quick p{font-size:12px}.section-head{display:flex;align-items:center;justify-content:space-between;margin:32px 0 16px}.section-head h3{font-size:15px}.lesson{display:flex;gap:18px;padding:20px 0;border-top:1px solid var(--line);align-items:flex-start}.lesson .times{min-width:48px;font-size:14px;font-weight:500}.times small{display:block;font-size:11px;margin-top:5px}.lesson-body{flex:1}.lesson h3{font-size:15px;margin-bottom:7px}.lesson p{font-size:12px}.lesson .tag{margin-top:10px}.tag{font-size:11px;color:var(--slate-200);display:inline-block;border:1px solid var(--line);border-radius:4px;padding:3px 6px}.dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent-teal);margin-right:6px}.days{display:flex;gap:8px;overflow-x:auto;padding:4px 0 14px;margin:0 -2px 12px;scrollbar-width:none}.day{flex:0 0 55px;border:1px solid var(--line);border-radius:10px;background:transparent;color:var(--on-dark);padding:11px 6px}.day small{display:block;font-size:10px;margin-bottom:8px}.day strong{font-weight:500;font-size:19px}.day.selected{background:var(--slate-100);color:var(--ink);border-color:var(--slate-100)}.day.selected small{color:var(--body)}.empty{padding:34px 22px;border:1px dashed var(--line);border-radius:12px;text-align:center}.empty .icon{margin-bottom:15px;color:var(--slate-100);width:28px;height:28px}.empty h3{margin-bottom:8px}.empty p{max-width:330px;margin:auto}.empty .primary,.empty .secondary{margin-top:20px}.tabs{display:flex;border-bottom:1px solid var(--line);margin:16px 0 24px;gap:24px}.tabs button{color:var(--muted-ui);background:none;border:0;border-bottom:2px solid transparent;padding:14px 0}.tabs button.active{color:var(--on-dark);border-color:var(--slate-100)}.request{border:1px solid var(--line);border-radius:12px;padding:22px;margin-bottom:12px}.request h3{margin:12px 0}.request .row{flex-wrap:wrap;margin-top:16px}.request .row button{font-size:12px;min-height:40px}.request .person{border-left:2px solid var(--slate-100);padding-left:12px;margin:15px 0}.nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);max-width:760px;width:100%;background:var(--product-sidebar);border-top:1px solid var(--line);padding:8px 8px calc(12px + max(env(safe-area-inset-bottom),var(--safe-bottom)));display:flex;justify-content:space-around;z-index:10}.nav button{background:none;color:#a29f96;border:0;display:grid;justify-items:center;gap:7px;min-width:52px;padding:8px 2px;font-size:10px}.nav button.active{color:var(--slate-100)}.settings{margin-top:24px;border-top:1px solid var(--line)}.setting{display:flex;align-items:center;justify-content:space-between;padding:20px 0;gap:16px;border-bottom:1px solid var(--line)}.setting p{font-size:12px;margin-top:5px;max-width:400px}.switch{width:44px;height:26px;border:1px solid var(--line);border-radius:30px;background:var(--slate-600);padding:3px;flex:none}.switch span{display:block;border-radius:50%;width:18px;height:18px;background:var(--cream-canvas);transition:transform .15s ease}.switch.on{background:#657364}.switch.on span{transform:translateX(17px)}.balance{padding:24px;border:1px solid var(--line);border-radius:12px;margin-top:24px;display:flex;gap:20px;align-items:center}.balance .number{font:44px var(--font-serif);color:var(--slate-100)}.balance p{font-size:12px}.text-button{background:none;border:0;color:var(--muted-ui);padding:12px 0;font-size:13px;text-align:left}.danger{color:#e4a79f}.notice{border:1px solid var(--line);padding:16px;border-radius:10px;font-size:12px;color:var(--muted-ui);line-height:1.6;margin-top:18px}.loading{min-height:75vh;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:22px}.loader{width:24px;height:24px;border:2px solid var(--line);border-top-color:var(--slate-100);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#notice{position:fixed;bottom:100px;left:50%;transform:translateX(-50%);max-width:90%;padding:14px 20px;border-radius:8px;border:1px solid var(--line);background:var(--slate-100);color:var(--ink);font-size:13px;z-index:100;display:none}#notice.visible{display:block}dialog{padding:28px;border:1px solid var(--line);border-radius:16px;background:var(--product-sidebar);color:var(--on-dark);max-width:440px;width:calc(100% - 32px);max-height:85vh;overflow:auto}dialog::backdrop{background:rgba(0,0,0,.65)}dialog h2{font-size:30px;margin-bottom:14px}dialog p{margin:12px 0}dialog label{display:block;margin:18px 0 8px;font-size:13px}dialog .row{margin-top:20px}dialog .close{float:right;background:transparent;color:var(--muted-ui);border:0;padding:4px}.review-answer{border-top:1px solid var(--line);padding:12px 0}.review-answer p{white-space:pre-wrap}.source{font-size:11px;color:var(--muted-ui);margin-top:18px}.source a{text-decoration:underline;text-underline-offset:3px}@media(max-width:680px){.top{height:70px;padding:0 24px}.topmeta .desktop{display:none}.intro{display:flex;flex-direction:column;gap:30px;padding:32px 24px 24px;align-items:stretch;min-height:0}.intro-copy{position:relative}.intro-copy h1{font-size:43px;max-width:290px;margin:14px 0}.intro-copy>p{max-width:260px;font-size:13px}.intro-art{position:absolute;right:0;top:0;width:68px;height:68px;margin:0;border-radius:12px}.onboard{padding:24px}.onboard h2{font-size:28px}.progress{margin-bottom:22px}main.content{padding:28px 24px 122px}h1{font-size:39px}.heading{margin-bottom:24px}.date-label{font-size:11px}.spotlight{padding:24px}.spotlight h2{font-size:28px}.quick{padding:18px;min-height:146px}.quick h3{font-size:14px}.quick-grid{gap:10px}.lesson{gap:14px}.top .brand{font-size:26px}.intro-copy .eyebrow{max-width:210px}.footer-note{font-size:11px}.nav{max-width:none}}@media(max-width:360px){.intro,main.content{padding-left:16px;padding-right:16px}.intro-art{display:none}.onboard{padding:20px}.primary{padding:13px}.nav button{font-size:9px;min-width:45px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

dialog input{border:1px solid var(--line);background:var(--product-input);color:var(--on-dark);padding:14px;border-radius:8px;width:100%;font-size:16px;min-height:48px}

.invite-code{display:block;overflow-wrap:anywhere;user-select:all;padding:18px;border:1px solid var(--line);border-radius:8px;font-size:17px;line-height:1.6;color:var(--slate-100)}

.lesson-actions{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}.lesson-actions button{font-size:11px;padding:8px 10px;min-height:34px}.check-label{display:flex;gap:10px;align-items:center;font-size:12px;margin:20px 0}.check-label input{width:18px!important;min-height:18px!important}.tabs{overflow-x:auto;gap:20px}.tabs button{white-space:nowrap;font-size:12px}

@media(max-width:680px){.tabs{display:grid;grid-template-columns:1fr 1fr;gap:0 14px;overflow:visible}.tabs button{font-size:13px}}

.plan-selected{background:var(--slate-100);color:var(--ink);border-color:var(--slate-100)}

.lesson-actions{display:grid;gap:8px}.action-explained{display:flex;align-items:center;gap:8px;width:100%}.action-explained>button:not(.hint-button){flex:1;min-width:0;white-space:normal;text-align:left;justify-content:flex-start}.action-explained>small{flex:1}.hint-button{flex:none;width:44px;min-width:44px;min-height:44px;border:1px solid var(--line);border-radius:50%;color:var(--slate-200);background:transparent;font-size:16px;padding:0;display:grid;place-items:center}.hint-button:hover{background:var(--product-overlay)}.lesson-actions .hint-button{min-height:40px;width:40px;min-width:40px;padding:0}.week-explained{max-width:420px}.lesson-actions button:not(.hint-button){font-size:12px;line-height:1.45;min-height:40px}
.test-banner{margin:24px auto 0;padding:20px;border:1px solid var(--accent-amber);border-radius:12px;max-width:704px;background:var(--panel)}.test-banner strong{font-weight:500}.test-banner label{display:block;font-size:12px;color:var(--muted-ui);margin:16px 0 8px}.test-message{white-space:pre-wrap}.setting select{width:auto;max-width:170px}.section-help{display:flex;align-items:center;gap:10px;margin-bottom:16px}.section-help p{flex:1}.settings .hint-button{width:36px;min-width:36px;min-height:36px}html[data-theme="light"]{color-scheme:light;--product-bg:#faf9f5;--product-sidebar:#f5f0e8;--product-input:#faf9f5;--product-stroke:#e6dfd8;--product-overlay:rgba(20,20,19,.04);--on-dark:#252523;--muted-ui:#69675f;--line:#d6cfc2;--panel:#f5f0e8;--slate-100:#504940;--slate-200:#5f5b52;--slate-300:#6c6a64}html[data-theme="light"] .day.selected,html[data-theme="light"] .group-grid button.selected,html[data-theme="light"] .plan-selected{background:#e8e0d2;color:#141413;border-color:#c9bda9}html[data-theme="light"] .nav button{color:#69675f}html[data-theme="light"] .nav button.active{color:#141413}html[data-theme="light"] #notice{background:#e8e0d2;color:#141413}html[data-theme="light"] .danger{color:#a33f32}html[data-theme="light"] .onboard input,html[data-theme="light"] textarea,html[data-theme="light"] select{color:#252523}html[data-theme="light"] .switch{background:#ada79d}html[data-theme="light"] .switch.on{background:#657364}@media(max-width:680px){.test-banner{margin:16px 24px 0}.setting{flex-wrap:wrap}.setting>div{flex:1;min-width:180px}}

.beta-badge{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:20px;padding:5px 9px;font-family:var(--font-sans);font-size:10px;font-weight:500;line-height:1.2;letter-spacing:.3px;color:var(--learn-mark);white-space:nowrap;vertical-align:middle}.beta-note{font-size:12px;line-height:1.7;margin:0 0 20px;padding-left:12px;border-left:2px solid var(--learn-mark);color:var(--muted-ui)}

.shared-marking-note{display:flex;align-items:flex-start;gap:7px;margin:10px 0;font-size:11px!important;color:var(--learn-mark)}.shared-marking-note .icon{width:14px;height:14px;flex:none;margin-top:2px}