:root{--primary:#5b5bd6;--primary2:#7c3aed;--bg:#f6f7fb;--card:#fff;--text:#1d2433;--muted:#6b7280;--border:#e5e7eb;--success:#147d4f;--danger:#b42318}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.app-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:#11162a;color:#fff;padding:24px 18px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:10px;font-size:20px;margin-bottom:28px}.brand span{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary2));font-size:13px}.sidebar nav{display:grid;gap:6px}.sidebar nav a{padding:11px 12px;border-radius:10px;color:#c9cede}.sidebar nav a:hover{background:#202844;color:#fff}.sidebar-user{margin-top:auto;display:grid;gap:8px;color:#c9cede}.sidebar-user a{font-size:13px}.main{padding:30px;min-width:0}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.topbar h1{margin:0;font-size:28px}.topbar p{margin:6px 0 0;color:var(--muted)}.grid{display:grid;gap:18px}.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:0 8px 25px rgba(16,24,40,.04)}.stat small{color:var(--muted)}.stat strong{display:block;font-size:28px;margin-top:8px}.section-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.section-title h2{font-size:18px;margin:0}.btn{border:0;border-radius:10px;padding:10px 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14px;border-radius:10px;margin-bottom:16px}.alert.success{background:#e9f8f0;color:var(--success)}.alert.error{background:#fff0ef;color:var(--danger)}.public-main{min-height:100vh}.hero{padding:90px 24px;background:radial-gradient(circle at 10% 0%,#ddd9ff,transparent 40%),linear-gradient(180deg,#fff,#f7f7ff)}.hero-inner{max-width:1100px;margin:auto;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}.hero h1{font-size:56px;line-height:1.05;margin:12px 0 18px}.hero p{font-size:19px;color:var(--muted);line-height:1.7}.hero-card{background:#11162a;color:#fff;border-radius:24px;padding:24px;box-shadow:0 30px 80px rgba(33,35,80,.2)}.chat-bubble{background:#fff;color:#222;padding:12px 14px;border-radius:14px;margin:12px 0;max-width:85%}.chat-bubble.me{margin-left:auto;background:#6c5ce7;color:#fff}.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at top,#dedbff,#f8f8fb 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