:root{--ink:#153d39;--muted:#6b7e79;--green:#207c65;--bg:#f5f7f3;--line:#e2e8df}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px Tahoma,Arial,sans-serif;line-height:1.8}aside{width:248px;position:fixed;right:0;top:0;height:100vh;background:#fff;border-left:1px solid var(--line);padding:35px 24px;display:flex;flex-direction:column}.brand{color:var(--ink);font-size:34px;font-weight:bold;text-decoration:none}.brand>span{background:var(--green);color:#fff;display:inline-grid;place-items:center;border-radius:15px;width:49px;height:49px;font-size:30px}.brand small{display:block;font-size:10px;letter-spacing:2px;margin-top:10px}.school{margin:38px 0 26px;color:var(--muted);font-size:12px}.school strong{font-size:17px;color:var(--ink)}.school p{margin:0;font-size:11px}nav{display:grid;gap:8px}button,input,select,textarea{font:inherit}button{cursor:pointer;border:0;border-radius:10px;padding:10px 19px;background:#eaf2ea;color:var(--ink)}nav button{text-align:right;background:transparent;font-size:14px;padding:12px}nav button.active{background:#e9f3eb;color:var(--green);font-weight:bold}.asidebottom{margin-top:auto;font-size:17px}.asidebottom span{display:block;color:var(--muted);font-size:11px;margin-top:20px}main{margin-right:248px;padding:0 45px;max-width:1600px}header{display:flex;justify-content:space-between;align-items:center;height:84px;border-bottom:1px solid var(--line);font-size:13px}.dot{display:inline-block;width:7px;height:7px;background:#65a77f;border-radius:50%;margin-left:7px}.tag,.pill{display:inline-block;background:#eaf1e7;padding:3px 12px;border-radius:20px;font-size:12px}.notice{margin:22px 0;background:#fff5df;color:#806526;padding:10px 16px;border-radius:9px;font-size:12px}h1{font-size:30px;line-height:1.5;margin:8px 0}h2{font-size:21px;margin:0 0 12px}h3{font-size:17px;margin:0 0 7px}p{margin:8px 0}.muted{color:var(--muted);font-size:14px}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--green);font-weight:bold}.hero{background:#143f37;border-radius:22px;padding:32px 35px;color:#fff;display:grid;grid-template-columns:1.6fr 1fr;gap:20px;overflow:hidden;margin:24px 0}.hero h1{font-size:32px}.hero p{color:#c1d8cb;max-width:460px}.hero .eyebrow{color:#c3dda9}.primary{background:var(--green);color:#fff}.hero button{background:#d9efae;color:#173d33;margin-top:17px}.sound{display:flex;align-items:center;justify-content:center;gap:7px;position:relative;min-height:170px}.sound i{display:block;width:10px;border-radius:20px;background:#c5dea3;height:var(--h)}.sound:after{content:'YOUR VOICE MATTERS';position:absolute;bottom:0;font-size:10px;letter-spacing:3px;color:#cee1d5}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:24px 0}.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}.stat strong{display:block;font-size:30px}.stat span{font-size:12px;color:var(--muted)}.sectionhead{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:28px 0 14px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tasknum{color:#87a097;font-size:12px}.tasktitle{font-size:21px;margin:16px 0 3px;direction:ltr;text-align:right}.taskdesc{font-size:13px;color:var(--muted);min-height:50px}.taskfoot{display:flex;align-items:center;justify-content:space-between;margin-top:20px}.taskfoot button{padding:6px 14px;font-size:12px}.columns{display:grid;grid-template-columns:1fr 1.1fr;gap:22px;margin-top:22px}label{display:block;font-size:13px;margin:12px 0 5px}input,select,textarea{width:100%;padding:11px 13px;border:1px solid #cedacf;border-radius:9px;background:#fff;color:var(--ink)}textarea{min-height:80px;resize:vertical}.row{display:flex;gap:12px;align-items:center}.row>*{flex:1}video,audio{width:100%;max-height:300px;background:#102c27;border-radius:12px;margin:12px 0}.stage{background:#eef3eb;text-align:center;padding:25px;border-radius:12px;min-height:130px}.stage strong{font-size:30px}.hint{padding:15px;background:#f4f7ef;border-radius:10px;font-size:13px}.english{direction:ltr;text-align:left;color:#275c4a;line-height:2.1}.actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}.small{font-size:12px}.empty{text-align:center;padding:45px 20px;color:var(--muted)}.empty b{display:block;color:var(--ink);font-size:20px}.review{margin:15px 0}.reviewtop{display:flex;justify-content:space-between;gap:10px;align-items:center}.rubric{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.rubric label{font-size:11px}.score{font-size:30px;color:var(--green)}.error{color:#a94735}.check{display:flex;gap:9px;align-items:flex-start;font-size:12px}.check input{width:auto;margin-top:7px}.steps{counter-reset:s}.steps p{padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}.steps p:before{counter-increment:s;content:counter(s);display:inline-grid;place-items:center;background:#e8f1df;width:27px;height:27px;border-radius:50%;margin-left:12px}footer{font-size:11px;color:var(--muted);padding:35px 0;text-align:center}#toast{position:fixed;bottom:22px;left:25px;background:#143f37;color:white;border-radius:10px;padding:13px 23px;display:none;z-index:5}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible{outline:3px solid #9cbf52;outline-offset:3px}@media(max-width:1000px){aside{width:210px}main{margin-right:210px;padding:0 22px}.grid{grid-template-columns:repeat(2,1fr)}.columns{grid-template-columns:1fr}}@media(max-width:680px){aside{position:static;width:100%;height:auto;padding:14px 18px}.brand{font-size:25px}.brand small,.school,.asidebottom{display:none}nav{display:flex;overflow:auto;margin-top:12px}nav button{white-space:nowrap;font-size:12px}main{margin:0;padding:0 16px}header{height:55px}.hero{grid-template-columns:1fr;padding:24px}.hero h1{font-size:27px}.sound{display:none}.stats{grid-template-columns:repeat(2,1fr)}.grid{grid-template-columns:1fr}.rubric{grid-template-columns:repeat(2,1fr)}.sectionhead{align-items:flex-start}h1{font-size:25px}}/* Quiet, tactile interface with system typography and generous touch targets. */
:root{--ink:#1d1d1f;--muted:#6e6e73;--green:#0071e3;--bg:#f5f5f7;--line:#e5e5ea}body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Tahoma,sans-serif;background:var(--bg);line-height:1.7;letter-spacing:-.15px}aside{background:rgba(250,250,252,.92);backdrop-filter:blur(24px);padding:30px 20px;width:252px;border-color:#dedee4}main{margin-right:252px;max-width:1550px;padding:0 48px}.brand{letter-spacing:-1.5px;font-size:32px}.brand>span{background:#0071e3;border-radius:15px;box-shadow:0 6px 16px #0071e31a}.brand small{font-weight:500;color:#6e6e73;letter-spacing:1.7px;font-size:9px}.school{margin:30px 0 22px}.school strong{font-size:15px}.asidebottom{font-size:14px;color:#6e6e73}nav{gap:4px}nav button{min-height:45px;border-radius:11px;color:#56565c;font-size:13px;padding:11px 12px}nav button.active{background:#e6edf7;color:#0068ce}header{height:76px;border-bottom:0}.dot{background:#0071e3}.tag,.pill{background:#f0f1f4;color:#55555d;font-weight:500}.notice{background:#eef3fa;color:#52647c;border:0;border-radius:14px;margin:8px 0 26px;padding:12px 18px}h1{font-size:32px;letter-spacing:-1.1px;font-weight:700}h2{font-size:21px;letter-spacing:-.5px}h3{font-weight:650}.eyebrow{letter-spacing:1.5px;color:#6e6e73;font-size:10px}.card{border:1px solid #e9e9ee;box-shadow:0 4px 20px #1d1d1f04;border-radius:22px;padding:25px;background:#fff}.primary{background:#0071e3;color:#fff}button{background:#f0f1f4;border-radius:12px;min-height:44px;padding:10px 17px;font-weight:500;transition:background .16s,transform .16s,box-shadow .16s}button:hover:not(:disabled){filter:brightness(.97)}button:active:not(:disabled){transform:scale(.98)}button:focus-visible,a:focus-visible{outline:3px solid #80baff;outline-offset:3px}input,select,textarea{background:#fafafb;border:1px solid #dcdce2;border-radius:12px;font-size:16px;min-height:46px;color:#1d1d1f}input:focus,select:focus,textarea:focus{outline:3px solid #0071e31f;border-color:#0071e3}label{font-size:14px;font-weight:500;margin-top:18px}.hero{background:#eaf2fc;color:#1d1d1f;padding:38px;border-radius:26px;border:1px solid #dfebfa;box-shadow:none}.hero h1{font-size:34px}.hero p{color:#536479}.hero .eyebrow{color:#526b88}.hero button{background:#0071e3;color:white;border-radius:30px;padding:12px 25px}.sound i{background:#4a95e6;width:8px}.sound:after{color:#5f7d9e}.stat strong{font-size:34px;font-weight:650;letter-spacing:-1px}.stat span{font-size:13px}.tasknum{color:#73737b}.tasktitle{font-size:23px;font-weight:650}.taskfoot button{color:#0071e3;background:#edf4fc;padding:9px 18px;font-size:14px;min-height:42px}.hint{background:#f3f6fa;color:#47566a;border-radius:14px}.english{color:#234f7f}.stage{background:#f3f4f7;border:1px solid #e8e9ee;border-radius:16px}.welcome{text-align:center;padding:34px 0 24px}.welcome h1{font-size:52px;line-height:1.3;letter-spacing:-1.8px;margin:20px 0}.welcome .pill{background:#eaf2fc;color:#0071e3;padding:7px 15px}.welcome p{color:#6e6e73;max-width:460px;margin:12px auto}.welcomeicons{display:flex;justify-content:center;gap:20px;font-size:12px;color:#73737b;margin-top:24px}.authcard{max-width:530px;margin:auto}.authcard h2{font-size:23px}.authcard .actions{gap:10px}.chatlog{max-height:520px;overflow:auto;overscroll-behavior:contain;background:#fafafb;margin:20px 0}.chatlog h2{font-size:17px;color:#6e6e73}.bubble{background:#e9e9ee;border-radius:19px 19px 5px 19px;padding:14px 18px;margin:16px 0;max-width:82%;overflow-wrap:anywhere}.bubble p{white-space:pre-wrap}.bubble.mine{background:#e4effe;margin-right:auto;border-radius:19px 19px 19px 5px}.bubble small,.messagefoot{font-size:11px;color:#62626b}.messagefoot{display:flex;gap:15px;align-items:center;justify-content:space-between}.replybutton{background:#ffffffa8;color:#0068cf;font-size:12px;min-height:36px;padding:5px 12px}.composer textarea{min-height:95px}.composer .actions{margin-top:10px}#replypreview{border-right:3px solid #0071e3;padding:10px 15px;background:#f0f5fc;border-radius:10px;font-size:13px}#replypreview p{max-height:70px;overflow:auto}.avatar{width:94px;height:94px;background:#eef3f9;border-radius:50%;display:grid;place-items:center;font-size:38px;margin-bottom:18px;overflow:hidden}.avatar img{width:100%;height:100%;object-fit:cover}.badge,#unread{background:#d9343a;color:#fff;border-radius:20px;font-size:11px;min-width:21px;padding:2px 6px;line-height:1.3;display:inline-block;text-align:center;margin-right:5px}.badge:empty,#unread:empty,[hidden]{display:none!important}.segmented{display:flex;gap:4px;flex-wrap:wrap;background:#e9e9ed;padding:5px;border-radius:14px;margin-bottom:20px;width:fit-content}.segmented button{background:transparent;font-size:13px;min-height:40px}.segmented button[aria-pressed=true]{background:#fff;box-shadow:0 2px 6px #0000000d}.segmented span{color:#777;margin-right:4px}.inbox-summary{padding:22px 26px;background:#fff;border-radius:22px;border:1px solid #e5e5ea;margin-top:20px}.inbox-summary b{background:#0071e3;color:white;border-radius:20px;padding:2px 8px;margin-right:8px}.danger{color:#bc2630;background:#fff0f1}.editor{max-width:760px}progress{width:100%;height:8px;accent-color:#0071e3}table{border-collapse:collapse;width:100%;font-size:14px}td,th{text-align:right;padding:15px;border-bottom:1px solid #ececf1}th{background:#f7f7f9;font-weight:600}details{margin-top:20px}summary{cursor:pointer;color:#0071e3;font-weight:500}hr{border:0;border-top:1px solid #e5e5ea;margin:25px 0}.confirmdialog{border:1px solid #dedee4;border-radius:24px;padding:28px;max-width:460px;width:calc(100% - 32px);color:#1d1d1f;box-shadow:0 25px 100px #0003}.confirmdialog::backdrop{background:#10101866;backdrop-filter:blur(5px)}#toast{background:#29292d;border:1px solid #ffffff33;border-radius:16px;box-shadow:0 8px 30px #0002;max-width:calc(100% - 32px)}footer{color:#85858d;font-size:12px;padding:38px 0}.score{color:#0071e3}
@media(max-width:1100px){aside{width:220px}main{margin-right:220px;padding:0 25px}.columns{grid-template-columns:1fr}.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){aside{position:sticky;top:0;z-index:3;width:100%;height:auto;padding:12px 16px;background:#f8f8fbeF;border-bottom:1px solid #e2e2e8;backdrop-filter:blur(22px)}main{margin:0;padding:0 16px}.brand{font-size:23px}.brand>span{width:35px;height:35px;font-size:22px;border-radius:11px}.brand small,.school,.asidebottom{display:none}nav{display:flex;gap:5px;overflow-x:auto;margin-top:10px;scrollbar-width:none}nav button{flex-shrink:0;font-size:12px;min-height:42px;padding:9px 12px}header{height:54px;font-size:11px}.notice{font-size:11px;margin:4px 0 20px}.welcome{padding:22px 0}.welcome h1{font-size:39px}.welcomeicons{gap:15px;font-size:11px}.card{padding:20px;border-radius:19px}.hero{padding:25px;border-radius:22px}.hero h1{font-size:28px}.grid{grid-template-columns:1fr}.stats{gap:10px}.stat strong{font-size:28px}.stat span{font-size:11px}.columns{gap:16px}.bubble{max-width:94%}.messagefoot{flex-wrap:wrap}.segmented{width:100%}.segmented button{flex:1;padding:8px;font-size:12px}.actions button{flex-grow:1}.row{flex-wrap:wrap}.row>*{min-width:130px}.inbox-summary{padding:20px}h1{font-size:27px}.sound{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
/* More expressive learning surfaces, retaining clear system controls. */
body{background:#f3f5fa}aside{background:#ffffffdc;border-left:1px solid #ffffff;box-shadow:-8px 0 40px #25385805}main{padding:0 42px}.brand>span{background:linear-gradient(145deg,#168bff,#0058d5)}header{font-weight:500}.notice{background:#fff;color:#627086;box-shadow:0 3px 20px #26476a04}.hero{background:linear-gradient(125deg,#0362dd,#248df3 65%,#56b5ff);color:white;border:0;padding:42px;min-height:285px;box-shadow:0 16px 40px #0876e426;position:relative}.hero h1{font-size:37px;letter-spacing:-1px}.hero p,.hero .eyebrow{color:#e0efff}.hero button{background:white;color:#0068d5;box-shadow:0 4px 12px #003b8625}.sound i{background:#ffffffbd}.sound:after{color:#e3f2ff}.card{border:0;box-shadow:0 8px 30px #20365a07;padding:28px;border-radius:24px}.grid>.card:nth-child(3n+1){border-top:4px solid #4a9bff}.grid>.card:nth-child(3n+2){border-top:4px solid #35b8a5}.grid>.card:nth-child(3n){border-top:4px solid #ffb658}.stats .card{background:white}.stat strong{color:#075fbf}.stat:nth-child(2) strong{color:#198a7e}.stat:nth-child(3) strong{color:#b76a12}.stat:nth-child(4) strong{color:#6350b6}.tasktitle{color:#134b7d}.taskfoot button{background:#e8f2ff}.sectionhead{margin-top:35px}.welcome{position:relative;padding:40px 0 30px}.welcome h1{background:linear-gradient(120deg,#15478b,#077dea);background-clip:text;-webkit-background-clip:text;color:transparent;font-size:58px}.welcomeicons span{background:#fff;padding:8px 14px;border-radius:24px;box-shadow:0 3px 15px #162d4b08;color:#526782}.authcard{box-shadow:0 16px 55px #16365f0c;border:1px solid white}.inbox-summary{background:linear-gradient(110deg,#fff,#edf5ff);border:1px solid white}.futuregrid{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:24px}.futurecard.writing{background:linear-gradient(155deg,#fff,#eaf4ff)}.futurecard.files{background:linear-gradient(155deg,#fff,#e5f6f1)}.featureicon{width:68px;height:68px;display:grid;place-items:center;border-radius:20px;background:#0071e3;color:white;font-size:30px;font-weight:700;margin:22px 0}.files .featureicon{background:#159c84}.futurecard ol{padding-right:22px;color:#536579;font-size:14px;line-height:2.2}.futurecard h2{font-size:27px}.upcoming{margin:8px 0 8px 12px;min-width:180px}.segmented{background:#e6ebf2}.segmented button[aria-pressed=true]{color:#0068cf}.primary{box-shadow:0 4px 10px #0071e319}.stage{background:#f1f6fe;border:1px solid #dceafa}.chatlog{background:#f4f7fb}.bubble{background:#fff;border:1px solid #e5ebf2}.bubble.mine{background:#e4effe;border:0}nav button.active{background:#0071e3;color:white;box-shadow:0 4px 14px #0071e32a}
@media(max-width:680px){main{padding:0 17px}.hero{padding:27px;min-height:0}.hero h1{font-size:29px}.welcome{padding:24px 0}.welcome h1{font-size:42px}.welcomeicons{gap:7px}.welcomeicons span{padding:6px 9px;font-size:10px}.futuregrid{grid-template-columns:1fr}.card{padding:22px}.sectionhead{margin-top:26px}aside{background:#ffffffed}nav button{font-size:13px}.hero p{font-size:14px}}
