:root{--bg:#f5f6f8;--ink:#20283b;--muted:#7a8293;--accent:#426b58;--line:#e5e8ed;--white:#fff;--lavender:#f0ecfa;--green:#e9f1eb}*{box-sizing:border-box}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:15px;line-height:1.6}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button,a,input,textarea{outline-offset:4px}button{cursor:pointer}button:disabled{opacity:.5;cursor:wait}.shell{display:flex;min-height:100vh}.sidebar{width:256px;flex-shrink:0;background:var(--white);border-right:1px solid var(--line);padding:32px 22px;display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;z-index:2}.brand{font-size:29px;font-weight:650;letter-spacing:-1.5px;display:flex;align-items:center;gap:8px}.brand-icon{background:var(--accent);color:white;width:39px;height:39px;border-radius:12px;display:inline-flex;justify-content:center;align-items:center;font-size:25px}.brand-dot{color:var(--accent);margin-left:-7px}.workspace-label{font-size:9px;font-weight:700;letter-spacing:1.5px;color:#9a9fab;margin:49px 10px 16px}nav{display:flex;flex-direction:column;gap:9px}nav a{padding:12px 13px;border-radius:9px;color:#687084;font-size:13px;font-weight:550;display:flex;align-items:center;gap:12px}nav a span{font-size:21px;width:22px}nav a:hover{background:#f5f6f8}nav a.active{background:var(--green);color:#345a47}.sidebar-bottom{margin-top:auto;padding-top:48px}.secure-badge{font-size:10px;color:#7b877f;display:flex;gap:7px;align-items:center}.secure-badge i{background:#7ba78a;width:6px;height:6px;border-radius:50%}.profile{display:flex;gap:10px;align-items:center;padding:24px 0 14px;border-top:1px solid var(--line);margin-top:18px}.avatar{width:36px;height:36px;background:#eeeaf4;border-radius:50%;display:grid;place-items:center;font-weight:650;color:#73678c}.profile strong{font-size:12px;display:block;max-width:155px;overflow:hidden;text-overflow:ellipsis}.profile a{font-size:10px;color:var(--muted)}.logout{border:0;background:none;padding:5px 0;font-size:11px;color:var(--muted)}.workspace{margin-left:256px;width:calc(100% - 256px)}header{height:76px;background:rgba(255,255,255,.65);border-bottom:1px solid var(--line);padding:0 48px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}.header-label{font-size:9px;letter-spacing:1.8px}main{max-width:1250px;margin:auto;padding:43px 48px 54px;min-height:calc(100vh - 135px)}.eyebrow{font-size:10px;color:var(--accent);letter-spacing:1.7px;font-weight:700;margin-bottom:12px}h1{font-size:34px;line-height:1.2;font-weight:600;letter-spacing:-1.1px;margin:0 0 15px}h2{font-weight:600;letter-spacing:-.6px}h3{font-weight:600}.accent{color:var(--accent)}.lead{color:var(--muted);font-size:14px;margin:0 0 34px}.hero{background:#dfe9df;border:1px solid #d7e2d7;border-radius:17px;display:flex;overflow:hidden;position:relative;min-height:295px;padding:30px 35px}.hero h2{font-size:35px;line-height:1.2;letter-spacing:-1px;margin:20px 0 14px}.hero p{color:#6a7a6e;font-size:12px;line-height:1.7}.pill{font-size:9px;font-weight:650;letter-spacing:.7px;border:1px solid #bdcdbf;color:#657e6a;background:#eaf0e7;padding:5px 9px;border-radius:5px;display:inline-block}.btn{border:1px solid var(--accent);background:var(--accent);color:white;border-radius:8px;padding:12px 19px;display:inline-flex;align-items:center;justify-content:center;gap:28px;font-size:12px;font-weight:600;transition:background .15s}.btn:hover{background:#355d48}.btn.light{background:#fff;border-color:#fff;color:#405b47;margin-top:8px}.btn.secondary{background:white;color:var(--ink);border-color:var(--line)}.btn.small{padding:9px 13px;font-size:11px}.hero-art{position:absolute;right:25px;top:0;bottom:0;width:320px;display:grid;place-items:center}.orbit{position:absolute;border:1px solid #bbcbbb;border-radius:50%;width:270px;height:270px;transform:rotate(-28deg) scaleY(.65)}.orbit-two{transform:rotate(42deg) scaleY(.7);width:280px;height:280px}.art-core{font-size:145px;color:#749681;line-height:1;transform:rotate(12deg);text-shadow:12px 17px 0 #cad9c9}.art-chip{position:absolute;background:#f8faf6dd;border:1px solid #fff;border-radius:8px;padding:7px 17px;font-size:10px;color:#67816c;box-shadow:0 7px 17px #5577540c}.chip-one{top:61px;right:7px;transform:rotate(7deg)}.chip-two{bottom:42px;left:12px;transform:rotate(-8deg)}.stats{display:grid;grid-template-columns:repeat(3,1fr);margin:27px 0 40px;gap:18px}.stats>div{display:flex;align-items:center;gap:16px;padding:5px 20px;border-right:1px solid var(--line)}.stats>div:first-child{padding-left:0}.stats>div:last-child{border:0}.stat-number{font-size:30px;font-weight:500;letter-spacing:-1px}.stats div>span:last-child{font-size:11px;color:var(--muted);max-width:120px}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.section-title h2{font-size:20px;margin:0}.section-title>span{font-size:11px;color:var(--muted)}.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.mode-card,.topic-card{background:white;border:1px solid var(--line);border-radius:12px;padding:25px;position:relative;transition:transform .15s,border-color .15s}.mode-card:hover,.topic-card:hover{transform:translateY(-3px);border-color:#b7c9be}.mode-icon{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:11px;background:var(--green);color:#5b7c66;font-size:26px}.lavender{background:var(--lavender);color:#9580b2}.card-arrow{position:absolute;top:24px;right:25px;color:#a3a9b5;font-size:20px}.mode-card h3{font-size:17px;margin:19px 0 7px}.mode-card p,.topic-card p{font-size:12px;color:var(--muted);max-width:300px;margin:0 0 20px}.card-link{font-size:11px;color:var(--accent);font-weight:650}footer{max-width:1250px;margin:auto;padding:0 48px 20px;color:#969caa;display:flex;justify-content:space-between;gap:20px;font-size:9px}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:25px}.page-heading h1{font-size:29px}.chat-panel{background:white;border:1px solid var(--line);border-radius:14px;overflow:hidden}.messages{height:480px;overflow:auto;padding:26px;display:flex;flex-direction:column;gap:18px}.chat-welcome{text-align:center;margin:auto}.welcome-icon{display:inline-grid;place-items:center;width:65px;height:65px;background:var(--green);border-radius:18px;color:#6e907a;font-size:40px}.chat-welcome h2{font-size:23px;margin:20px 0 8px}.chat-welcome p{font-size:12px;color:var(--muted)}.suggestions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:25px}.suggestions button{background:#fff;border:1px solid var(--line);padding:9px 12px;border-radius:7px;font-size:11px;color:#697383}.bubble{max-width:90%;padding:18px 22px;border-radius:13px;font-size:13px;line-height:1.8;overflow-wrap:anywhere}.bubble.user{background:#edf2ee;align-self:flex-end;min-width:150px}.bubble.assistant{background:#f6f7f9;align-self:flex-start}.bubble-label{display:block;font-size:9px;letter-spacing:1px;color:var(--accent);font-weight:700;margin-bottom:6px}.message-text{white-space:pre-wrap}.sources{display:flex;flex-wrap:wrap;gap:7px;border-top:1px solid var(--line);margin-top:15px;padding-top:12px}.sources span{font-size:10px;background:white;border:1px solid var(--line);border-radius:5px;padding:4px 7px}.composer{display:flex;align-items:center;gap:15px;border:1px solid #dce3dd;border-radius:10px;margin:10px 22px 0;padding:12px 14px}.composer textarea{resize:none;border:0;background:none;outline:none;flex:1;font-size:13px;min-width:0}.send{width:36px;height:36px;flex-shrink:0;border:0;background:var(--accent);color:white;border-radius:9px;font-size:23px}.chat-note{font-size:9px;color:#939ba8;text-align:center;padding:12px}.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.topic-top{display:flex;align-items:center;justify-content:space-between}.topic-card h2{font-size:20px;margin:22px 0 10px}.topic-meta{display:flex;gap:18px;color:var(--muted);font-size:11px;border-top:1px solid var(--line);padding:17px 0}.success{background:var(--green);color:var(--accent);border-color:#cfdfd2}.empty{grid-column:1/-1;padding:65px 30px;text-align:center;border:1px dashed #d2dbd3;border-radius:15px;background:#fff}.empty h2{font-size:22px}.empty p{color:var(--muted);font-size:13px}.back{display:block;font-size:12px;color:var(--muted);margin-bottom:25px}.reading{background:white;border:1px solid var(--line);border-radius:12px;padding:32px;line-height:1.95;font-size:14px;white-space:normal;overflow-wrap:anywhere}.reading p:first-child{margin-top:0}.lesson-end{display:flex;align-items:center;justify-content:space-between;gap:22px;margin-top:24px;padding:20px 0}.lesson-end h3{margin:0}.lesson-end p{font-size:12px;color:var(--muted)}.question-card{border:1px solid var(--line);background:#fff;border-radius:12px;padding:22px 26px;margin:0 0 25px}.question-card legend{font-size:16px;font-weight:600;padding:6px 8px;max-width:100%;background:var(--bg)}.question-card legend>span{color:#83a18b;margin-right:12px}.option{display:flex;align-items:center;gap:12px;border:1px solid var(--line);padding:13px 16px;border-radius:7px;font-size:13px;margin:8px 0;cursor:pointer}.option:has(input:checked){background:var(--green);border-color:#a7c0ac}.option input{accent-color:var(--accent)}.result-hero{background:var(--green);text-align:center;padding:40px 25px;border-radius:15px;margin-bottom:30px}.result-score{display:block;font-size:75px;letter-spacing:-4px;color:var(--accent);line-height:1.3}.result-score small{font-size:26px;letter-spacing:0}.result-hero h1{font-size:27px}.result-hero p{color:#758579;font-size:13px}.result-hero .btn{margin:10px 4px}.review-card{padding:22px 25px;background:white;border:1px solid var(--line);border-radius:10px;margin-bottom:15px}.review-card h3{font-size:16px}.review-card p{font-size:13px}.notice{background:#fff4d9;border:1px solid #eee0bc;color:#796b4c;border-radius:8px;padding:12px 16px;margin-bottom:20px;font-size:13px}.muted{color:var(--muted)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.login-body{display:flex;min-height:100vh;background:#fff}.login-story{width:48%;background:#e3ece3;padding:50px 60px;display:flex;flex-direction:column;justify-content:space-between}.login-story h1{font-size:48px;line-height:1.17;letter-spacing:-1.7px;margin:24px 0}.login-story h1 em{font-style:normal;color:#709178}.login-story p{font-size:14px;color:#7a8b7e;line-height:1.8}.login-panel{flex:1;display:flex;align-items:center;justify-content:center;padding:45px}.login-card{width:360px}.login-card h2{font-size:26px;margin:12px 0}.login-card p{font-size:12px}.login-card label{display:block;font-size:12px;font-weight:600;margin:24px 0 7px}input:not([type=radio]):not([type=hidden]),.password-form input{width:100%;border:1px solid #dce0e6;border-radius:7px;padding:12px;background:#fafbfc}.login-card .btn{width:100%;margin-top:27px;justify-content:space-between}.login-help{color:#969da8;text-align:center;margin-top:30px}.password-form{max-width:600px}.password-form label{display:block}.password-form .helptext,.password-form li{color:var(--muted);font-size:12px}
@media(min-width:1450px){main{padding-top:55px}.hero{min-height:330px}.hero-art{right:80px;width:380px}.hero h2{font-size:39px}.messages{height:560px}}
@media(max-width:1100px){.sidebar{width:220px;padding:28px 16px}.workspace{margin-left:220px;width:calc(100% - 220px)}main{padding:32px 28px}header{padding:0 28px}footer{padding:20px 28px}.hero-art{right:-35px;opacity:.65}.hero>div:first-child{position:relative;z-index:1}.hero h2{font-size:30px}.hero{padding:25px}.stats>div{padding:5px 10px;gap:9px}.login-story{padding:40px}.login-story h1{font-size:38px}}
@media(max-width:760px){.shell{display:block}.sidebar{position:static;width:100%;padding:16px 20px;border-right:0;border-bottom:1px solid var(--line)}.sidebar .brand{font-size:23px}.brand-icon{height:32px;width:32px;font-size:20px}.workspace-label,.sidebar-bottom{display:none}nav{flex-direction:row;margin-top:15px;gap:5px;overflow:auto}nav a{padding:8px 10px;white-space:nowrap;font-size:11px}nav a span{font-size:17px;width:auto}.workspace{width:100%;margin:0}header{height:45px;padding:0 22px;font-size:10px}.header-label{display:none}main{padding:28px 20px}h1{font-size:28px}.lead{font-size:12px}.hero{min-height:280px;padding:25px}.hero-art{right:-75px;opacity:.3;width:280px}.hero h2{font-size:29px}.stats{gap:5px;margin:23px 0 28px}.stats>div{display:block;padding:0 9px}.stat-number{display:block;font-size:25px}.stats div>span:last-child{font-size:9px;display:block;line-height:1.4}.mode-grid,.topic-grid{grid-template-columns:1fr}.section-title>span{display:none}.mode-card{padding:22px}.page-heading{align-items:flex-start;flex-direction:column;gap:10px}.page-heading h1{font-size:26px}.messages{height:410px;padding:17px}.bubble{max-width:96%;padding:14px 16px}.composer{margin:10px 12px 0}.chat-note{padding:11px;font-size:8px}.chat-welcome h2{font-size:20px}.suggestions{flex-direction:column}.suggestions button{font-size:10px}.reading{padding:22px}.lesson-end{align-items:flex-start;flex-direction:column}.question-card{padding:17px}.question-card legend{font-size:14px}.option{font-size:12px}footer{padding:5px 20px 20px;flex-direction:column;gap:5px}.login-body{display:block}.login-story{width:100%;padding:25px}.login-story>div,.login-story>.secure-badge{display:none}.login-panel{padding:45px 25px}.login-card{width:100%;max-width:400px}}
@media(max-width:760px){.sidebar-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:10px}.sidebar-bottom .secure-badge{display:none}.profile{margin:0;padding:0;border:0}.profile .avatar{width:27px;height:27px;font-size:12px}.profile strong{font-size:10px}.logout{font-size:10px}}