:root{--bg:#f3f7f8;--surface:#fff;--ink:#102832;--muted:#667c84;--line:#dce7e9;--nav:#071d2b;--teal:#0aa79a;--teal-dark:#087a73;--blue:#3d72e6;--orange:#ee9258;--shadow:0 18px 50px rgba(21,55,66,.08);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);font-size:16px}*{box-sizing:border-box}body{margin:0;min-width:320px;background:var(--bg)}button,input,textarea{font:inherit}.skip-link{position:fixed;top:-50px;left:12px;z-index:99;background:#fff;padding:10px 14px;border-radius:8px;color:#000}.skip-link:focus{top:12px}.app-shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:260px;background:var(--nav);color:#d9e6e9;padding:26px 18px;display:flex;flex-direction:column;z-index:10}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;padding:0 8px 28px}.brand-mark{display:grid;place-items:center;width:41px;height:41px;border-radius:12px;background:linear-gradient(145deg,#11c5b5,#087a73);font-weight:800;font-size:20px}.brand strong,.brand small,.profile-card strong,.profile-card small{display:block}.brand small{color:#8aa2aa;margin-top:2px}.desktop-nav{display:grid;gap:6px}.nav-item{border:0;background:transparent;color:#91a7ae;text-align:left;padding:12px 14px;border-radius:10px;display:flex;gap:13px;align-items:center;cursor:pointer}.nav-item span{font-size:19px}.nav-item:hover,.nav-item.active{background:#103344;color:#fff}.nav-item.active{box-shadow:inset 3px 0 var(--teal)}.credit-card{margin-top:auto;background:#0d2b3a;border:1px solid #1b4253;padding:14px;border-radius:12px}.credit-head{display:flex;justify-content:space-between;align-items:center}.credit-head span{font-size:.8rem;color:#96abb2}.credit-head strong{color:#52d3c6}.progress{height:6px;background:#dbe7e8;border-radius:99px;overflow:hidden;margin:10px 0}.progress span{display:block;height:100%;background:var(--teal);border-radius:99px}.credit-card small{color:#77949e;font-size:.72rem}.profile-card{border:0;background:transparent;color:#fff;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;text-align:left;padding:16px 5px 0;cursor:pointer}.profile-card small{font-size:.68rem;color:#7f9aa3;margin-top:3px}.avatar{display:grid;place-items:center;width:34px;height:34px;background:#17485a;border-radius:50%;font-size:.74rem;font-weight:700}.main{margin-left:260px;padding:0 38px 48px;min-height:100vh}.topbar{height:98px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.eyebrow{margin:0 0 5px;color:var(--teal-dark);font-size:.67rem;letter-spacing:.14em;font-weight:800}.topbar h1{margin:0;font-size:1.45rem}.top-actions{display:flex;gap:9px}.icon-button,.new-chat{border:1px solid var(--line);background:var(--surface);border-radius:9px;height:42px;padding:0 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160px);display:flex;flex-direction:column;padding:34px}.welcome{text-align:center;margin:auto;max-width:710px;width:100%}.ai-orb{width:76px;height:76px;margin:5px auto 18px;border-radius:22px;background:linear-gradient(145deg,#0eaa9d,#086d71);box-shadow:0 15px 35px rgba(8,122,115,.25);display:grid;place-items:center;color:#fff;font-size:38px;transform:rotate(8deg)}.ai-orb span{transform:rotate(-8deg)}.welcome h2{font-size:clamp(1.65rem,3vw,2.25rem);line-height:1.15;margin:9px 0 13px}.welcome>p:not(.eyebrow){color:var(--muted);max-width:570px;margin:0 auto 28px;line-height:1.6}.prompt-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.prompt-card{background:#f8fbfb;border:1px solid var(--line);border-radius:11px;padding:14px;text-align:left;color:var(--ink);cursor:pointer;min-height:107px}.prompt-card:hover{border-color:var(--teal);transform:translateY(-2px)}.prompt-card span{font-size:.62rem;color:var(--teal);font-weight:800}.prompt-card strong,.prompt-card small{display:block;margin-top:8px}.prompt-card strong{font-size:.82rem}.prompt-card small{font-size:.7rem;color:var(--muted);line-height:1.4}.composer{border:1px solid #cddcde;border-radius:12px;padding:12px;margin-top:22px;box-shadow:0 7px 24px rgba(17,45,55,.06)}.composer textarea{border:0;outline:0;resize:none;width:100%;min-height:46px;background:transparent;color:var(--ink);line-height:1.45}.composer-row,.composer-row>div{display:flex;align-items:center;justify-content:space-between;gap:10px}.composer-row span{font-size:.65rem;color:#8a9ca1}.attach{border:0;background:transparent;font-size:20px;color:var(--muted);cursor:pointer}.send,.search-box button,.calculator button,.action-card button,.course button,.job button{border:0;background:var(--teal-dark);color:#fff;border-radius:8px;padding:10px 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9px}.tools-grid{display:grid;grid-template-columns:repeat(2,minmax(0,430px));gap:18px}.calculator{display:grid;gap:12px}.calculator h3,.calculator p{margin:0}.calculator p{color:var(--muted)}.calculator label{font-size:.76rem;font-weight:700;color:#466069}.calculator input{display:block;width:100%;padding:11px;border:1px solid var(--line);border-radius:8px;margin-top:5px;color:var(--ink)}.calculator output{font-size:1.45rem;font-weight:800;color:var(--teal-dark);background:#edf8f7;padding:13px;border-radius:9px}.calculator output.success{font-size:1rem}.calculator small{color:var(--muted)}.tool-icon{display:grid;place-items:center;width:45px;height:45px;background:#def3f1;color:var(--teal-dark);border-radius:10px;font-size:1.25rem;font-weight:800}.status.draft{background:#f1f1f1;color:#79858a}.action-card button,.course button,.job button{margin-top:10px}.action-card button:disabled{background:#c6d0d2}.course .progress{margin-top:18px}.career-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.salary h3{font-size:2rem;color:var(--teal-dark)}.mobile-nav{display:none}.toast{position:fixed;right:25px;bottom:25px;background:#102832;color:#fff;padding:12px 16px;border-radius:9px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translateY(8px);transition:.2s;z-index:30}.toast.show{opacity:1;transform:none}.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}.dark{--bg:#07151d;--surface:#0c222d;--ink:#e9f3f4;--muted:#93a9af;--line:#1d3a45;--shadow:0 18px 50px rgba(0,0,0,.17)}.dark .prompt-card,.dark .quick-tool,.dark .calculator input,.dark .search-box{background:#102a35}.dark .message.ai{background:#102f37;border-color:#19434a}.dark .content-card,.dark .calculator{background:var(--surface)}
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@media(max-width:760px){body{padding-bottom:70px}.sidebar{display:none}.main{margin:0;padding:0 16px 28px}.topbar{height:78px}.topbar .eyebrow{display:none}.topbar h1{font-size:1.15rem}.icon-button{display:none}.new-chat{height:38px;font-size:.78rem}.safety-strip{margin:14px 0;font-size:.72rem}.workspace-grid{display:block}.chat-panel{min-height:calc(100vh - 176px);padding:22px 15px;border-radius:12px}.context-panel{display:none}.ai-orb{width:62px;height:62px;border-radius:18px}.welcome h2{font-size:1.6rem}.welcome>p:not(.eyebrow){font-size:.84rem;margin-bottom:20px}.prompt-grid{display:flex;overflow:auto;padding-bottom:5px;scroll-snap-type:x mandatory}.prompt-card{min-width:210px;scroll-snap-align:start}.composer{margin-top:18px}.composer-row span{display:none}.message{max-width:93%}.section-intro{padding:25px 0 20px}.section-intro h2{font-size:1.6rem}.cards.three,.tools-grid,.career-grid{grid-template-columns:1fr}.mobile-nav{position:fixed;display:grid;grid-template-columns:repeat(3,1fr);bottom:0;left:0;right:0;height:66px;background:#071d2b;z-index:20;padding-bottom:env(safe-area-inset-bottom)}.mobile-nav button{border:0;background:transparent;color:#839ba4;font-size:.61rem;display:grid;place-items:center;padding:7px 2px;cursor:pointer}.mobile-nav button span{font-size:1.15rem}.mobile-nav button.active{color:#5bd2c8}.toast{bottom:82px;left:16px;right:16px;text-align:center}}
@media(max-width:380px){.chat-panel{padding:18px 11px}.welcome h2{font-size:1.38rem}.prompt-card{min-width:190px}.composer{padding:9px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}