:root{--bg: #f5f7fb;--surface: #ffffff;--ink: #0f172a;--muted: #64748b;--line: #e2e8f0;--accent: #0f766e;--accent-soft: #ccfbf1;--danger: #be123c;--warn: #b45309;--ok: #047857;--shadow: 0 10px 40px rgba(15, 23, 42, .06);--radius: 16px;color-scheme:light}:root[data-theme=dark]{--bg: #0b1220;--surface: #111827;--ink: #e5e7eb;--muted: #94a3b8;--line: #1f2937;--accent: #2dd4bf;--accent-soft: #134e4a;--shadow: 0 10px 40px rgba(0, 0, 0, .35);color-scheme:dark}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{font-family:Inter,ui-sans-serif,system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.5}a{color:var(--accent);text-decoration:none}button,input,select,textarea{font:inherit}h1,h2,h3{letter-spacing:-.03em}.site-header,.site-footer{max-width:1120px;margin:0 auto;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700}.logo-mark{width:32px;height:32px;border-radius:8px;background:var(--accent);display:grid;place-items:center;color:#fff;font-size:14px}.hero{max-width:1120px;margin:0 auto;padding:72px 24px 40px}.hero h1{font-size:clamp(36px,6vw,64px);line-height:1.05;margin:0 0 16px}.hero p.lead{font-size:20px;color:var(--muted);max-width:680px}.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{border:0;border-radius:12px;padding:10px 16px;cursor:pointer;background:var(--accent);color:#fff;font-weight:600}.btn.secondary{background:var(--surface);color:var(--ink);border:1px solid var(--line)}.btn.ghost{background:transparent;color:var(--ink)}.btn.danger{background:var(--danger)}.btn.small{padding:6px 10px;font-size:13px;border-radius:10px}.grid-4,.grid-3,.grid-2{display:grid;gap:16px}.grid-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.grid-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.metric{font-size:32px;font-weight:700}.delta{color:var(--ok);font-size:13px;font-weight:600}.muted{color:var(--muted)}.page{padding:24px}.page h1{margin:0 0 8px;font-size:28px}.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:16px 0}input,select,textarea{border:1px solid var(--line);border-radius:10px;padding:9px 12px;background:var(--surface);color:var(--ink);width:100%}label{font-size:13px;font-weight:600;display:block;margin-bottom:6px}.field{margin-bottom:14px}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase}.badge{display:inline-flex;align-items:center;border-radius:999px;padding:2px 8px;font-size:12px;font-weight:600;background:var(--accent-soft);color:var(--accent)}.badge.warn{background:#ffedd5;color:var(--warn)}.badge.danger{background:#ffe4e6;color:var(--danger)}.badge.ok{background:#d1fae5;color:var(--ok)}.shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:var(--surface);border-right:1px solid var(--line);padding:18px 12px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}.nav-link{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;color:var(--ink)}.nav-link.active,.nav-link:hover{background:var(--accent-soft);color:var(--accent)}.topbar{display:flex;justify-content:space-between;align-items:center;padding:14px 24px;border-bottom:1px solid var(--line);background:var(--surface)}.inbox{display:grid;grid-template-columns:300px 1fr 300px;height:calc(100vh - 64px)}.col{border-right:1px solid var(--line);overflow:auto}.conv-item{padding:12px 14px;border-bottom:1px solid var(--line);cursor:pointer;width:100%;text-align:left;background:transparent;border-left:0;border-right:0;border-top:0;color:inherit}.conv-item.active{background:var(--accent-soft)}.bubble{max-width:80%;padding:10px 12px;border-radius:14px;margin:8px 0}.bubble.in{background:var(--surface);border:1px solid var(--line)}.bubble.out{background:var(--accent);color:#fff;margin-left:auto}.composer{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line)}.banner{background:#ecfdf5;border:1px solid #99f6e4;color:#115e59;padding:10px 14px;border-radius:12px;margin-bottom:16px}.wizard{display:grid;grid-template-columns:220px 1fr;gap:24px}.steps button{width:100%;text-align:left;margin-bottom:6px}.canvas{min-height:420px;background:repeating-linear-gradient(0deg,transparent,transparent 19px,var(--line) 20px),repeating-linear-gradient(90deg,transparent,transparent 19px,var(--line) 20px);border-radius:16px;padding:24px}.node{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px;margin:0 0 12px;max-width:280px;box-shadow:var(--shadow)}.auth{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-card{width:min(440px,100%)}.mobile-nav{display:none}.chart{display:flex;align-items:flex-end;gap:6px;height:160px}.bar{flex:1;background:var(--accent);border-radius:6px 6px 0 0;min-height:4px;opacity:.85}.bar.alt{background:#38bdf8}.kcmd{position:fixed;inset:0;background:#0f172a66;display:grid;place-items:start center;padding-top:12vh;z-index:50}.kcmd-box{width:min(560px,92vw);background:var(--surface);border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}.drawer{position:fixed;top:0;right:0;width:min(420px,100%);height:100%;background:var(--surface);border-left:1px solid var(--line);padding:20px;overflow:auto;z-index:40}@media(max-width:960px){.shell{grid-template-columns:1fr}.sidebar{display:none}.inbox{grid-template-columns:1fr;height:auto}.mobile-nav{display:flex;position:sticky;bottom:0;background:var(--surface);border-top:1px solid var(--line);justify-content:space-around;padding:8px}.wizard{grid-template-columns:1fr}}