:root{color-scheme:dark;--bg:#080b0b;--panel:#101615;--line:#29332e;--muted:#a1b0a7;--lime:#d7ff45;--ink:#edf4ed;font-family:Arial,"Microsoft JhengHei",sans-serif}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 85% 0, #24332155,transparent 45%),var(--bg);color:var(--ink);line-height:1.65}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a,input,textarea,summary{outline-offset:5px}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}.learn-wrap{width:min(1260px,calc(100% - 48px));margin:auto;padding-bottom:50px}.learn-nav{min-height:90px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.learn-brand{display:flex;align-items:center;gap:12px;font-size:17px;font-weight:700}.learn-brand b,.ai-mark{background:var(--lime);color:#111c09;padding:9px 12px;border-radius:11px;font-weight:900}.learn-nav nav{display:flex;align-items:center;gap:24px;font-size:13px;color:var(--muted)}.learn-nav form{margin:0}.text-button{border:0;background:none;color:var(--muted);padding:0}.eyebrow{color:var(--lime);font-size:12px;font-weight:700;letter-spacing:.1em}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(30px,4vw,49px);line-height:1.2;letter-spacing:-.035em;margin-bottom:17px}h2{font-size:23px;margin:8px 0 12px}h3{font-size:20px}.muted,.small{color:var(--muted)}.small{font-size:12px;line-height:1.9;margin:18px 0 0}.learn-panel{background:linear-gradient(150deg,#151e19,#0f1413);border:1px solid var(--line);border-radius:20px;padding:26px}.learn-login-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:80px;align-items:center;min-height:75vh;padding:70px 0}.intro h1{font-size:clamp(38px,5vw,65px);margin:25px 0}.intro>p{max-width:520px;color:var(--muted)}.intro-tags{display:flex;gap:12px;margin:28px 0}.intro-tags span{border:1px solid var(--line);border-radius:30px;padding:8px 15px;font-size:12px}.learn-panel label{display:block;font-size:13px;margin:18px 0 7px}input:not([type=checkbox]):not([type=hidden]),textarea,select{width:100%;border:1px solid #3a443d;background:#090e0c;border-radius:10px;padding:12px;color:var(--ink)}textarea{resize:vertical}input:focus,textarea:focus{border-color:var(--lime)}.primary{background:var(--lime);color:#111908;font-weight:700;border:0;border-radius:10px;padding:12px 19px}.full{width:100%;margin-top:23px}.learn-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:40px 0 24px}.learn-heading h1{margin:9px 0 12px}.membership{border:1px solid var(--line);border-radius:15px;padding:15px 21px;min-width:235px;background:#141c14}.membership>span{display:block;color:var(--lime);font-size:12px}.membership strong{display:block;font-size:32px}.membership small{font-size:11px;color:var(--muted);font-weight:400}.learn-grid{display:grid;grid-template-columns:310px minmax(0,1fr);gap:20px;align-items:start}.resources h2{margin-bottom:25px}.suggestions{display:grid;gap:10px}.suggestions button{display:flex;justify-content:space-between;text-align:left;border:1px solid var(--line);background:#19221b;color:var(--ink);padding:14px 12px;border-radius:10px;font-size:13px}.suggestions button:hover{border-color:var(--lime)}details{border-top:1px solid var(--line);margin-top:27px;padding-top:20px}summary{cursor:pointer;font-size:14px}.materials{white-space:pre-wrap;font-size:13px;color:#b6c4b9;margin-top:15px;overflow-wrap:anywhere}.chat{padding:0;overflow:hidden}.chat-top{display:flex;justify-content:space-between;align-items:center;padding:18px 23px;border-bottom:1px solid var(--line)}.chat-top h2{font-size:17px;margin:0}.chat-top>span{font-size:11px;color:var(--muted)}.messages{height:410px;overflow-y:auto;padding:22px;scroll-behavior:smooth}.empty{padding:50px 15px;text-align:center;color:var(--muted)}.ai-mark{width:53px;margin:0 auto 22px}.empty h3{color:var(--ink);font-weight:500}.empty p{font-size:13px}.message{padding:13px 17px;border-radius:13px;margin-bottom:16px;overflow-wrap:anywhere}.message strong{display:block;font-size:12px;margin-bottom:7px;color:var(--lime)}.message strong small{color:var(--muted);font-weight:400}.message>div{white-space:pre-wrap;font-size:14px}.message.user{background:#253022;margin-left:48px}.message.assistant{background:#141d18;border:1px solid var(--line);margin-right:20px}.composer{border-top:1px solid var(--line);padding:8px 22px 18px}.composer textarea{min-height:90px}.composer-bottom{display:flex;gap:12px;justify-content:space-between;align-items:center;margin-top:14px}.composer-bottom span{font-size:12px;color:var(--muted);flex:1}.composer-bottom button{flex-shrink:0}.learn-panel .consent{display:flex;align-items:flex-start;gap:8px;font-size:11px;color:var(--muted)}.consent input{margin-top:4px}.chat>.small{border-top:1px solid var(--line);margin:0;padding:12px 22px;background:#0b100d}.learn-error{padding:12px 16px;border:1px solid #775b33;border-radius:10px;background:#322616;color:#ffdda7}.chat>.learn-error{margin:12px 22px}.admin-grid{display:grid;grid-template-columns:330px minmax(0,1fr);gap:22px;margin:25px 0}.admin-grid .learn-panel{margin-bottom:20px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);white-space:nowrap}td form{display:inline}td button{padding:6px 9px;margin:3px;border:1px solid var(--line);background:#1f2921;color:var(--ink);border-radius:6px}.admin-materials{min-height:330px}.notice{padding:14px;border:1px solid var(--line);border-radius:10px;white-space:pre-wrap}.danger{color:#ffafaf}.admin-check{display:flex!important;gap:10px;align-items:center}
@media(max-width:850px){.learn-grid,.admin-grid{grid-template-columns:1fr}.resources{order:2}.learn-login-grid{gap:30px}.learn-nav nav{gap:14px}.learn-heading{align-items:flex-start}.membership{min-width:200px}.messages{height:440px}}
@media(max-width:600px){.learn-wrap{width:calc(100% - 28px)}.learn-nav{min-height:76px;align-items:flex-start;padding:17px 0;gap:10px}.learn-brand{font-size:14px;gap:7px;white-space:nowrap}.learn-nav nav{font-size:11px;gap:10px;flex-wrap:wrap;justify-content:flex-end}.learn-login-grid{grid-template-columns:1fr;padding:35px 0}.intro h1{font-size:41px}.learn-heading{display:block;padding-top:30px}.membership{margin-top:22px}.membership strong{font-size:27px}.learn-panel{padding:20px}.chat{padding:0}.chat-top,.composer{padding-left:15px;padding-right:15px}.messages{padding:15px;height:380px}.empty{padding:35px 0}.message.user{margin-left:24px}.message.assistant{margin-right:0}.composer-bottom{align-items:flex-start}.intro-tags{gap:6px}.intro-tags span{padding:7px 11px}}

.answer-sources{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;font-size:12px}.answer-sources>span{width:100%;color:var(--muted)}.answer-sources a{border:1px solid #647332;border-radius:8px;padding:5px 9px;color:var(--lime);text-decoration:underline;text-underline-offset:3px}.source-preview{position:fixed;z-index:1000;right:20px;bottom:20px;width:min(440px,calc(100vw - 28px));max-height:85vh;overflow:auto;background:#101815;border:1px solid #7c9140;border-radius:16px;padding:14px;box-shadow:0 12px 60px #000b}.source-preview[hidden]{display:none}.source-preview-top{display:flex;align-items:center;justify-content:space-between;gap:20px}.source-preview-top a{color:var(--lime);text-decoration:underline}.source-preview button{background:#263522;color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:6px 12px}.source-preview p{font-size:12px;color:var(--muted);margin:12px 0}.source-preview img,.source-card{display:block;width:100%;height:auto}.source-preview img[hidden]{display:none}.source-card{max-width:700px;margin:20px auto}.source-excerpt{font-size:16px}.source-transcript{margin-top:18px}