:root{--navy:#0b2b50;--blue:#176bc0;--green:#16835d;--gold:#ffc94a;--ink:#172435;--muted:#607084;--line:#d9e3ef;--bg:#f4f8fc;--white:#fff;--shadow:0 12px 32px #12365d14}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.5}a{color:var(--blue)}.topbar{background:var(--navy);color:#fff;padding:14px 5%;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-weight:900;font-size:1.35rem;color:#fff;text-decoration:none}.brand span{color:var(--gold)}nav{display:flex;gap:14px;align-items:center;flex-wrap:wrap}nav a{color:#fff;text-decoration:none;font-weight:700;font-size:.92rem}.laser{background:#fff;border-bottom:2px solid #111;padding:8px 3%;display:flex;gap:14px;align-items:center;justify-content:center;flex-wrap:wrap;font-size:.78rem}.laser strong{white-space:nowrap}.laser .divider{border-left:1px solid #aaa;padding-left:14px}.container{width:min(1120px,92%);margin:28px auto}.hero,.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow)}.hero{text-align:center}.eyebrow{color:var(--blue);font-size:.82rem;letter-spacing:.09em;font-weight:900}.hero h1{margin:5px 0 8px;font-size:clamp(1.8rem,4vw,2.7rem)}.hero p{color:var(--muted);max-width:760px;margin:0 auto 18px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:20px}.grid.two{grid-template-columns:repeat(2,1fr)}.course{background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px}.course h3{margin:4px 0}.badge{display:inline-block;background:#e8f3ff;color:#14538e;border-radius:99px;padding:4px 9px;font-size:.77rem;font-weight:800}.badge.green{background:#e7f7ef;color:#116747}.button,button{display:inline-block;border:0;border-radius:10px;padding:11px 16px;background:var(--blue);color:#fff;font-weight:800;text-decoration:none;cursor:pointer}.button.secondary{background:#fff;color:var(--navy);border:1px solid var(--line)}.button.gold{background:var(--gold);color:#18212d}.actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}form{display:grid;gap:14px}.field label{display:block;font-weight:800;margin-bottom:5px}.field input,.field select,.field textarea{width:100%;padding:11px;border:1px solid #bbc9d8;border-radius:9px;font:inherit}.field textarea{min-height:120px}.flash{padding:12px 16px;border-radius:10px;margin-bottom:14px}.flash.success{background:#e7f7ef;color:#116747}.flash.error{background:#feeceb;color:#9b2823}.progress{height:10px;background:#e4ebf3;border-radius:99px;overflow:hidden}.progress span{display:block;height:100%;background:var(--green)}.stat{font-size:2rem;font-weight:900;color:var(--navy)}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:11px;border-bottom:1px solid var(--line);text-align:left}.whiteboard-wrap{max-width:760px}.whiteboard{width:100%;aspect-ratio:5/3;border:2px solid #26364a;border-radius:8px;background:#fff;touch-action:none}.toolbar{display:flex;gap:8px;margin:10px 0;flex-wrap:wrap}.locked{opacity:.62}.footer{margin-top:40px;background:#071d35;color:#d9e7f6;padding:24px 5%;text-align:center;font-size:.86rem}.footer a{color:#fff}.laser-chat-layout{display:grid;grid-template-columns:minmax(240px,320px) minmax(0,1fr);gap:20px;align-items:stretch}.laser-meaning-panel{background:linear-gradient(155deg,#092947,#124a74);color:#fff}.laser-meaning-panel h1{margin:12px 0 0;font-size:2rem;letter-spacing:.08em}.laser-tagline{margin:3px 0 20px;color:#d9ebfa;font-weight:700}.laser-meaning-list{list-style:none;margin:0;padding:0;display:grid;gap:9px}.laser-meaning-list li{display:grid;padding:11px 12px;background:#ffffff12;border:1px solid #ffffff2b;border-radius:11px}.laser-meaning-list strong{color:var(--gold);font-size:1rem}.laser-meaning-list span{font-size:.9rem;color:#eef7ff}.laser-motto{margin:20px 0 0;padding-top:16px;border-top:1px solid #ffffff3d;font-weight:900;color:var(--gold)}.laser-chat-card{display:flex;flex-direction:column;min-height:610px;padding:0;overflow:hidden}.laser-chat-heading{display:flex;align-items:center;gap:13px;padding:20px 22px;border-bottom:1px solid var(--line)}.laser-chat-heading h2,.laser-chat-heading p{margin:0}.laser-chat-heading p{color:var(--muted);font-size:.9rem}.laser-avatar{width:46px;height:46px;display:grid;place-items:center;border-radius:50%;background:var(--navy);color:var(--gold);font-weight:900;font-size:1.35rem}.laser-messages{flex:1;min-height:360px;max-height:520px;overflow-y:auto;padding:22px;background:#f7faff;display:flex;flex-direction:column;gap:12px}.chat-message{max-width:78%;display:grid;gap:3px;padding:11px 14px;border-radius:14px;box-shadow:0 3px 9px #102b4710}.chat-message.assistant{align-self:flex-start;background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px}.chat-message.user{align-self:flex-end;background:var(--blue);color:#fff;border-bottom-right-radius:4px}.chat-message b{font-size:.78rem}.laser-chat-form{display:grid;grid-template-columns:1fr auto;gap:10px;padding:16px;border-top:1px solid var(--line)}.laser-chat-form textarea{resize:none;width:100%;border:1px solid #bbc9d8;border-radius:10px;padding:11px;font:inherit}.chat-notice{margin:0;padding:0 18px 15px;color:var(--muted);font-size:.78rem}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:800px){.grid,.grid.two,.laser-chat-layout{grid-template-columns:1fr}.topbar{align-items:flex-start;flex-direction:column}.laser{font-size:.75rem}.laser .divider{border:0;padding:0}.container{margin-top:18px}.card,.hero{padding:20px 16px}.laser-chat-card{padding:0;min-height:560px}.laser-meaning-list{grid-template-columns:1fr 1fr}.laser-meaning-list li:last-child{grid-column:1/-1}table{display:block;overflow-x:auto}}@media(max-width:480px){.laser-meaning-list{grid-template-columns:1fr}.laser-meaning-list li:last-child{grid-column:auto}.laser-chat-form{grid-template-columns:1fr}.chat-message{max-width:92%}}
 .laser-fab{position:fixed;right:22px;bottom:22px;z-index:50;border-radius:999px;background:var(--navy);color:var(--gold);box-shadow:0 12px 30px #071d3555}.laser-popup{position:fixed;right:22px;bottom:82px;z-index:49;width:min(410px,calc(100vw - 28px));max-height:75vh;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 55px #071d3566;overflow:hidden}.laser-popup[hidden]{display:none}.laser-popup-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;background:var(--navy);color:#fff}.laser-popup-head div{display:grid}.laser-popup-head small{color:#d8e7f5}.laser-popup-head button{font-size:1.3rem;padding:4px 10px;background:transparent}.laser-mini-meaning{display:grid;grid-template-columns:1fr 1fr;gap:5px;padding:10px 14px;background:#eef5fb;font-size:.73rem}.laser-mini-meaning span:last-child{grid-column:1/-1}.laser-popup .laser-messages{min-height:180px;max-height:260px}.laser-popup .laser-chat-form{padding:10px}.demo-login{background:#fff5d6;border:1px solid #f1d372;border-radius:10px;padding:12px}code{font-weight:900}
.topbar{background:#fff;color:var(--navy);padding:6px 4%;box-shadow:0 2px 10px #0b2b5018}.brand{display:block;text-decoration:none}.brand img{display:block;width:150px;height:78px;object-fit:contain}nav a{color:var(--navy)}.hero{min-height:520px;display:flex;align-items:center;text-align:left;background:linear-gradient(90deg,#fff 0%,#ffffffed 38%,#ffffff22 76%),url('students-hero.png') center/cover no-repeat}.hero-copy{max-width:520px}.hero .actions{justify-content:flex-start}.hero-subtitle{font-size:1.3rem;font-weight:800}.hero h1{font-size:clamp(2.2rem,5vw,3.5rem);line-height:1}.hero p{margin-left:0;margin-right:0}.narrow{max-width:650px;margin:auto}