:root{
  --bg:#f5f7fb;--surface:#fff;--ink:#0f172a;--muted:#667085;--line:#e5e7eb;
  --brand:#0f766e;--brand-dark:#115e59;--soft:#ecfdf5;--radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Tahoma,Arial,sans-serif;background:var(--bg);color:var(--ink)}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.topbar{height:82px;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);display:flex;align-items:center;justify-content:space-between;padding:0 28px;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.brand{display:flex;align-items:center;gap:14px}
.brand-mark{width:46px;height:46px;border-radius:14px;background:var(--ink);color:white;display:grid;place-items:center;font-weight:800}
.brand h1{font-size:18px;margin:0}
.brand p{font-size:12px;color:var(--muted);margin:4px 0 0}
.icon-btn{display:none;background:transparent;border:0;font-size:26px}
.layout{display:grid;grid-template-columns:250px 1fr;min-height:calc(100vh - 82px)}
.sidebar{background:#111827;padding:22px 16px;display:flex;flex-direction:column;justify-content:space-between}
.sidebar nav{display:grid;gap:8px}
.nav-item{border:0;background:transparent;color:#cbd5e1;padding:13px 14px;border-radius:13px;text-align:right}
.nav-item:hover,.nav-item.active{background:#1f2937;color:#fff}
.side-note{background:#1f2937;color:#d1d5db;padding:14px;border-radius:16px;font-size:12px;display:grid;gap:4px}
.side-note strong{color:#fff}
.content{padding:32px;max-width:1400px;width:100%;margin:auto}
.view{display:none}.view.active{display:block}
.hero{display:grid;grid-template-columns:1.5fr .7fr;gap:24px;background:linear-gradient(135deg,#0f172a,#164e63);color:#fff;padding:42px;border-radius:28px}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:.04em;color:#14b8a6}
.hero .eyebrow{color:#99f6e4}
.hero h2,.section-head h2{font-size:34px;line-height:1.2;margin:10px 0 14px}
.hero p,.section-head p{color:#cbd5e1;line-height:1.9;max-width:760px}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.primary,.secondary{border:0;border-radius:13px;padding:12px 18px;font-weight:700}
.primary{background:var(--brand);color:#fff}.primary:hover{background:var(--brand-dark)}
.secondary{background:#fff;color:var(--ink)}
.hero-panel{display:grid;grid-template-columns:1fr;gap:10px}
.stat{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.13);padding:18px;border-radius:18px;display:flex;align-items:center;justify-content:space-between}
.stat strong{font-size:26px}.stat span{font-size:13px;color:#dbeafe}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
.feature-card{border:1px solid var(--line);background:var(--surface);padding:22px;border-radius:20px;text-align:right;transition:.2s}
.feature-card:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(15,23,42,.08)}
.feature-card span{font-size:25px}.feature-card h3{margin:14px 0 7px}.feature-card p{margin:0;color:var(--muted);line-height:1.7}
.section-head{margin-bottom:20px}.section-head h2{margin-bottom:6px}.section-head p{color:var(--muted);margin-top:4px}
.chat-shell,.panel,.career-form,.profile-form,.career-result,.notice{background:#fff;border:1px solid var(--line);border-radius:22px}
.chat-shell{padding:18px}.chat-messages{height:360px;overflow:auto;padding:8px;display:flex;flex-direction:column;gap:10px}
.msg{max-width:78%;padding:13px 15px;border-radius:16px;line-height:1.7}.msg.assistant{background:#f1f5f9;align-self:flex-start}.msg.user{background:var(--brand);color:#fff;align-self:flex-end}
.quick-prompts{display:flex;gap:8px;overflow:auto;padding:12px 0}
.quick-prompts button{white-space:nowrap;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 12px}
.chat-form{display:grid;grid-template-columns:1fr auto;gap:10px}.chat-form textarea{resize:none;border:1px solid var(--line);border-radius:14px;padding:12px;outline:none}.chat-form textarea:focus{border-color:#14b8a6}
.helper{font-size:11px;color:var(--muted);margin:10px 2px 0}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.topic-grid article,.timeline article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.topic-grid p,.timeline p,.panel li{color:var(--muted);line-height:1.8}
.split{display:grid;grid-template-columns:1fr 1fr;gap:18px}.panel{padding:22px}.panel ul{padding-right:20px}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.timeline span{display:inline-grid;place-items:center;background:var(--soft);color:var(--brand-dark);border-radius:999px;padding:7px 11px;font-weight:800}
.career-form,.profile-form{padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:15px}.field{display:grid;gap:7px}.field label{font-size:13px;font-weight:700}.field input,.field select{border:1px solid var(--line);border-radius:12px;padding:12px;background:#fff}.full{grid-column:1/-1}
.career-result{margin-top:16px;padding:20px;line-height:1.8}.career-result h3{margin-top:0}.career-result .roadmap{display:grid;gap:10px}.roadmap div{background:#f8fafc;border-radius:14px;padding:13px}
.notice{padding:14px;margin-top:12px}.hidden{display:none!important}

@media(max-width:950px){
  .layout{grid-template-columns:1fr}
  .sidebar{position:fixed;right:-280px;top:82px;width:270px;height:calc(100vh - 82px);z-index:25;transition:.25s}
  .sidebar.open{right:0}
  .icon-btn{display:block}
  .hero{grid-template-columns:1fr}
  .cards,.topic-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:620px){
  .topbar{padding:0 16px;height:72px}.layout{min-height:calc(100vh - 72px)}.sidebar{top:72px;height:calc(100vh - 72px)}
  .brand p{display:none}.content{padding:18px}
  .hero{padding:25px;border-radius:22px}.hero h2,.section-head h2{font-size:27px}
  .cards,.topic-grid,.split,.timeline,.career-form,.profile-form{grid-template-columns:1fr}
  .full{grid-column:auto}.msg{max-width:90%}
  .chat-messages{height:330px}.chat-form{grid-template-columns:1fr}.chat-form .primary{width:100%}
}