:root{
  --bg:#0b1020;--bg-soft:#111832;--card:#151f3d;--card2:#10172e;--line:rgba(255,255,255,.11);
  --text:#eef4ff;--muted:#a8b6d8;--accent:#59d3ff;--accent2:#8b5cf6;--good:#35d399;--warn:#fbbf24;--bad:#fb7185;
  --shadow:0 20px 60px rgba(0,0,0,.35);--radius:22px;--radius2:14px
}
*{box-sizing:border-box}html{font-size:16px;-webkit-text-size-adjust:100%}body{margin:0;min-height:100vh;background:radial-gradient(circle at 0 0,rgba(89,211,255,.18),transparent 34%),radial-gradient(circle at 95% 0,rgba(139,92,246,.18),transparent 34%),linear-gradient(180deg,#0b1020,#0f172a 48%,#0b1020);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,"Helvetica Neue",sans-serif;line-height:1.55}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.wrap{width:min(1160px,calc(100% - 32px));margin:0 auto;padding:28px 0 48px}.hero{border:1px solid var(--line);background:linear-gradient(135deg,rgba(21,31,61,.94),rgba(16,23,46,.82));border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;margin-bottom:22px;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;right:-90px;top:-90px;width:260px;height:260px;background:linear-gradient(135deg,var(--accent),var(--accent2));opacity:.12;border-radius:50%}.eyebrow{display:inline-flex;gap:8px;align-items:center;color:#d9f7ff;font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:.11em;background:rgba(89,211,255,.11);border:1px solid rgba(89,211,255,.25);border-radius:999px;padding:7px 11px;margin-bottom:14px}.hero h1{font-size:clamp(1.7rem,4.4vw,3rem);line-height:1.08;margin:0 0 12px}.hero p{max-width:760px;color:var(--muted);margin:0;font-size:1.05rem}.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}.card{grid-column:span 12;background:rgba(21,31,61,.86);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 12px 44px rgba(0,0,0,.22);padding:22px}.half{grid-column:span 6}.third{grid-column:span 4}.two-thirds{grid-column:span 8}.tool-title{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:16px}.tool-title h2{margin:0;font-size:1.18rem}.tool-title p{margin:4px 0 0;color:var(--muted);font-size:.94rem}.label{display:block;font-weight:700;margin:0 0 8px}.field,.textarea,select{width:100%;border:1px solid rgba(255,255,255,.14);background:rgba(5,10,25,.62);color:var(--text);border-radius:14px;padding:13px 14px;font:inherit;outline:none;transition:border .18s,box-shadow .18s,background .18s}.textarea{min-height:260px;resize:vertical}.field:focus,.textarea:focus,select:focus{border-color:rgba(89,211,255,.7);box-shadow:0 0 0 4px rgba(89,211,255,.12);background:rgba(5,10,25,.78)}.row{display:grid;grid-template-columns:repeat(12,1fr);gap:14px;align-items:end}.col-3{grid-column:span 3}.col-4{grid-column:span 4}.col-6{grid-column:span 6}.col-8{grid-column:span 8}.col-12{grid-column:span 12}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.btn{border:0;border-radius:14px;padding:12px 16px;font:700 .95rem/1.1 inherit;cursor:pointer;color:#061221;background:linear-gradient(135deg,var(--accent),#b4f0ff);box-shadow:0 10px 24px rgba(89,211,255,.17);transition:transform .15s,box-shadow .15s,filter .15s;text-align:center;min-height:44px}.btn:hover{transform:translateY(-1px);filter:saturate(1.08);box-shadow:0 14px 30px rgba(89,211,255,.22)}.btn.secondary{color:var(--text);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);box-shadow:none}.btn.danger{color:#fff;background:linear-gradient(135deg,#fb7185,#f43f5e)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:16px}.stat{background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.09);border-radius:16px;padding:14px}.stat b{display:block;font-size:1.35rem;line-height:1.2}.stat span{display:block;color:var(--muted);font-size:.86rem;margin-top:3px}.result{font-size:clamp(1.6rem,4vw,2.8rem);font-weight:800;letter-spacing:-.03em}.note{color:var(--muted);font-size:.92rem}.switch{display:flex;align-items:center;gap:10px;color:var(--muted);user-select:none}.switch input{width:18px;height:18px;accent-color:#59d3ff}.preview{height:176px;border-radius:18px;border:1px solid rgba(255,255,255,.14);background:#fff;box-shadow:inset 0 0 0 1px rgba(0,0,0,.12)}.palette{display:grid;grid-template-columns:repeat(12,1fr);gap:6px}.swatch{aspect-ratio:1;border:0;border-radius:10px;cursor:pointer;box-shadow:inset 0 0 0 1px rgba(255,255,255,.18);transition:transform .12s}.swatch:hover{transform:scale(1.08)}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.tab{border:1px solid rgba(255,255,255,.13);background:rgba(255,255,255,.06);color:var(--text);border-radius:999px;padding:9px 13px;cursor:pointer;font-weight:700}.tab.active{background:linear-gradient(135deg,rgba(89,211,255,.26),rgba(139,92,246,.22));border-color:rgba(89,211,255,.42)}.panel{display:none}.panel.active{display:block}.calculator{max-width:420px;margin:0 auto}.calc-screen{width:100%;border:1px solid rgba(255,255,255,.14);background:#060b18;color:var(--text);border-radius:18px;padding:20px;font-size:2rem;text-align:right;font-weight:800;letter-spacing:.02em;margin-bottom:12px}.calc-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:9px}.calc-grid button{min-height:56px;border-radius:16px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.08);color:var(--text);font:800 1rem/1 inherit;cursor:pointer}.calc-grid button.op{background:rgba(89,211,255,.18);border-color:rgba(89,211,255,.3)}.calc-grid button.eq{background:linear-gradient(135deg,var(--accent),#b4f0ff);color:#061221}.calc-grid button.clear{background:rgba(251,113,133,.18);border-color:rgba(251,113,133,.3)}.menu{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.menu a{display:block;padding:18px;border-radius:18px;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.1);color:var(--text)}.menu a b{display:block;margin-bottom:5px}.menu a span{display:block;color:var(--muted);font-size:.92rem}.footer{margin-top:22px;color:var(--muted);font-size:.88rem;text-align:center}.hidden{display:none!important}@media(max-width:860px){.wrap{width:min(100% - 20px,760px);padding-top:14px}.hero,.card{padding:18px;border-radius:18px}.half,.third,.two-thirds,.col-3,.col-4,.col-6,.col-8{grid-column:span 12}.stats{grid-template-columns:repeat(2,1fr)}.menu{grid-template-columns:1fr}.textarea{min-height:220px}.palette{grid-template-columns:repeat(8,1fr)}}@media(max-width:520px){.stats{grid-template-columns:1fr}.actions .btn{width:100%}.row{gap:10px}.calc-grid{gap:7px}.calc-grid button{min-height:48px;border-radius:13px}.palette{grid-template-columns:repeat(6,1fr)}.hero h1{font-size:1.6rem}}