:root{--navy:#0b3157;--blue:#136f9f;--sky:#e8f4fb;--ink:#16202a;--muted:#667789;--line:#d8e1ea;--ok:#e7f6ec;--warn:#fff4d6;--bad:#ffe6e6;--card:#fff;--bg:#f4f7fb}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.45 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}.app-header{background:linear-gradient(135deg,var(--navy),#0f6289);color:white;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{font-size:25px;font-weight:800;letter-spacing:.2px}.sub{opacity:.82}.shell{display:grid;grid-template-columns:260px minmax(0,1fr);gap:0;max-width:1500px;margin:0 auto}.side{background:#fff;border-right:1px solid var(--line);min-height:calc(100vh - 76px);position:sticky;top:0;align-self:start;padding:14px}.side h3{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:4px 8px 10px}.tabs{display:flex;flex-direction:column;gap:7px}.tabs button{text-align:left;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--navy);font-weight:700}.tabs button.active{background:var(--navy);color:white;border-color:var(--navy)}main{min-width:0;padding:18px}.grid{display:grid;grid-template-columns:minmax(300px,420px) minmax(360px,1fr);gap:14px}.widegrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:0 1px 4px rgba(11,49,87,.06)}.card+ .card{margin-top:14px}h1,h2,h3{margin:.1rem 0 .7rem;color:var(--navy)}h1{font-size:28px}label{display:block;font-size:12px;color:var(--muted);font-weight:700;margin-top:10px}input,select,textarea{width:100%;padding:10px 11px;border:1px solid var(--line);border-radius:10px;background:#fff;font:inherit}button{cursor:pointer;border:0;border-radius:10px;padding:10px 12px;background:var(--blue);color:white;font-weight:700}.ghost{background:white;color:var(--navy);border:1px solid rgba(255,255,255,.45)}.hidden{display:none}.results{background:var(--sky);border:1px solid #c9e6f6;border-radius:14px;padding:12px;margin-top:12px}.kpi{font-size:27px;font-weight:800;color:var(--navy)}.muted{color:var(--muted)}.diagram{width:100%;min-height:300px;border:1px solid var(--line);border-radius:12px;background:radial-gradient(circle at center,#fff 0,#fff 46%,#eef6fb)}table{width:100%;border-collapse:collapse;margin-top:8px;background:white}th,td{border-bottom:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}th{color:var(--navy);font-size:12px;text-transform:uppercase;background:#f8fbfd}.badge{display:inline-block;background:#eef6fb;color:var(--navy);border:1px solid #c9e6f6;border-radius:999px;padding:3px 8px;margin:2px;font-size:12px}.warn{background:var(--warn);border-color:#f1d483}.ok{background:var(--ok);border-color:#c3e7ce}.bad{background:var(--bad);border-color:#f1b9b9}.toolbar{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.small{font-size:12px}.term{font-weight:800;color:var(--navy)}.learn a{display:block;color:var(--navy);font-weight:700;margin:5px 0;text-decoration:none}.formula{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#f8fbfd;border:1px solid var(--line);border-radius:10px;padding:9px;overflow:auto}.step{border-left:4px solid var(--blue);padding-left:10px;margin:10px 0}.mini{font-size:13px}footer{text-align:center;color:var(--muted);padding:25px}.mobileTabs{display:none}@media(max-width:900px){.shell{display:block}.side{position:static;min-height:0;border-right:0;border-bottom:1px solid var(--line)}.tabs{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr))}.grid{grid-template-columns:1fr}main{padding:12px}.brand{font-size:21px}}
.color-label{display:flex;align-items:center;gap:8px;color:var(--ink)}.swatch{display:inline-block;width:12px;height:12px;border-radius:4px;vertical-align:-1px;box-shadow:0 0 0 1px rgba(0,0,0,.18)}.swatch.multi{background:linear-gradient(90deg,#ef4444,#2563eb,#22c55e,#f59e0b,#a855f7)}.color-result{display:grid;grid-template-columns:18px 1fr auto;align-items:center;gap:8px;border-bottom:1px solid rgba(216,225,234,.7);padding:7px 0}.color-result:last-child{border-bottom:0}.color-result b{font-size:16px;color:var(--navy)}.color-note{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px;margin:8px 0 0}.legend{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}.legend span{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:999px;background:#fff;padding:4px 8px;font-size:12px;color:var(--ink)}