:root{color-scheme:dark;--bg:#050713;--glass:rgba(14,20,43,.72);--line:rgba(139,190,255,.18);--text:#eaf4ff;--muted:#93a8c8;--cyan:#70e7ff;--violet:#9b83ff}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 50% -20%,#152557,#050713 52%);color:var(--text);font:14px/1.55 Inter,system-ui,sans-serif;min-height:100vh}#stars{position:fixed;inset:0;width:100%;height:100%;opacity:.45;pointer-events:none}header{position:sticky;top:0;z-index:3;display:flex;justify-content:space-between;align-items:center;padding:18px 4vw;background:rgba(5,7,19,.64);backdrop-filter:blur(24px);border-bottom:1px solid var(--line)}header b{letter-spacing:.18em}header span{margin-left:12px;color:var(--cyan);font-size:11px}nav a{color:var(--muted);text-decoration:none;margin-left:20px}main{position:relative;z-index:1;max-width:1500px;margin:auto;padding:5vh 4vw}.hero{max-width:900px;padding:5vh 0}.eyebrow{color:var(--cyan);letter-spacing:.22em;font-size:11px}.hero h1{font-size:clamp(36px,6vw,82px);line-height:1.02;margin:.2em 0;background:linear-gradient(115deg,#fff,#72e7ff 45%,#a58cff);-webkit-background-clip:text;color:transparent}.hero>p:not(.eyebrow){color:var(--muted);font-size:18px;max-width:760px}.actions,.row{display:flex;gap:10px;flex-wrap:wrap}button{border:0;border-radius:12px;padding:12px 16px;background:linear-gradient(120deg,var(--cyan),var(--violet));color:#06101f;font-weight:800;cursor:pointer}.ghost{background:rgba(255,255,255,.06);color:var(--text);border:1px solid var(--line)}.grid{display:grid;grid-template-columns:1.2fr 1fr;gap:18px}.panel{background:var(--glass);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 24px 80px rgba(0,0,0,.28);backdrop-filter:blur(20px)}.title{display:flex;align-items:center;justify-content:space-between}h2{margin-top:0}.solver{display:grid;grid-template-columns:1.1fr 1fr auto;gap:12px;align-items:center;padding:11px 0;border-top:1px solid var(--line)}.solver small{color:var(--muted)}.dot{width:9px;height:9px;border-radius:50%;background:#52627c;box-shadow:0 0 14px currentColor}.dot.on{background:#6dffb0}.dot.off{background:#ff7c8d}textarea{width:100%;min-height:400px;resize:vertical;background:#070b19;color:#bfe8ff;border:1px solid var(--line);border-radius:14px;padding:14px;font:12px/1.6 ui-monospace,monospace}pre{white-space:pre-wrap;color:#9cf2c9;background:#070b19;padding:14px;border-radius:14px;max-height:230px;overflow:auto}.layers{display:flex;flex-wrap:wrap;gap:9px}.layers span{padding:9px 12px;border:1px solid var(--line);border-radius:999px;color:#b9cced}.truth p{color:var(--muted)}@media(max-width:900px){.grid{grid-template-columns:1fr}.hero{padding-top:2vh}.solver{grid-template-columns:1fr auto}.solver small{grid-column:1/-1}header span{display:none}}