:root{--bg:#08111a;--ink:#e7f1fb;--muted:#8ba6c0;--line:rgba(120,180,235,.13);--card:rgba(14,26,40,.62);--sky:#38bdf8;--teal:#2dd4bf;--grad:linear-gradient(105deg,#38bdf8,#22d3ee 50%,#2dd4bf);--mono:ui-monospace,"SF Mono","JetBrains Mono",Menlo,Consolas,monospace;--radius:20px;--shadow:0 30px 80px -30px rgba(0,0,0,.8);--under:#60a5fa;--normal:#34d399;--over:#fbbf24;--ob1:#fb923c;--ob2:#f87171;--ob3:#ef4444}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden;line-height:1.5}.bg-wrap{position:fixed;inset:0;z-index:-3;background:radial-gradient(1200px 800px at 82% -12%,#0e2436 0,transparent 60%),radial-gradient(1000px 700px at 4% 110%,#0c1e30 0,transparent 55%),var(--bg)}.blob{position:fixed;border-radius:50%;filter:blur(85px);opacity:.3;z-index:-2;animation:float 28s ease-in-out infinite;will-change:transform}.b1{width:44vw;height:44vw;left:-12vw;top:-14vw;background:radial-gradient(circle at 30% 30%,#38bdf8,transparent 66%)}.b2{width:42vw;height:42vw;right:-14vw;top:8vh;background:radial-gradient(circle at 60% 40%,#2dd4bf,transparent 64%);animation-delay:-10s}.b3{width:40vw;height:40vw;left:26vw;bottom:-22vw;background:radial-gradient(circle at 50% 50%,#22d3ee,transparent 62%);animation-delay:-17s}@keyframes float{0%,to{transform:translate(0) scale(1)}33%{transform:translate(4vw,3vh) scale(1.07)}66%{transform:translate(-3vw,-2vh) scale(.95)}}.grid-overlay{position:fixed;inset:0;z-index:-1;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:54px 54px;-webkit-mask-image:radial-gradient(1100px 700px at 50% -5%,#000 0,transparent 78%);mask-image:radial-gradient(1100px 700px at 50% -5%,#000 0,transparent 78%);opacity:.5}@media (prefers-reduced-motion:reduce){.blob{animation:none}}.shell{max-width:700px;margin:0 auto;padding:30px 22px 60px}.brand-row{display:flex;align-items:center;gap:11px;margin-bottom:30px}.logo-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:var(--grad);box-shadow:0 8px 26px -8px rgba(45,212,191,.6)}.wordmark{font-weight:800;font-size:20px;letter-spacing:-.02em}.wordmark b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.hero{text-align:center;margin:6px auto 24px;max-width:600px}.hero h1{font-size:clamp(30px,5.4vw,50px);line-height:1.05;letter-spacing:-.035em;font-weight:850;margin:0 0 12px}.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.hero p{color:var(--muted);font-size:clamp(15px,2.2vw,17px);margin:0 auto;max-width:500px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:var(--shadow)}.seg{display:flex;gap:8px;margin-bottom:16px}.seg button{flex:1 1;background:none;border:1px solid var(--line);color:var(--muted);border-radius:10px;padding:9px;font-size:12.5px;font-weight:600;cursor:pointer}.seg button.active{background:var(--grad);color:#06131c;border-color:transparent}.grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:14px;gap:14px}.f{display:flex;flex-direction:column;gap:5px}.f label{font-size:11.5px;color:var(--muted);font-weight:600}.f .row{display:flex;gap:8px}.f input{width:100%;background:rgba(8,17,26,.72);border:1px solid var(--line);color:var(--ink);border-radius:11px;padding:12px 13px;font-family:var(--mono);font-size:16px;outline:none;transition:border-color .15s ease,box-shadow .15s ease}.f input:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(45,212,191,.16)}.result{margin-top:20px;text-align:center}.imc{font-family:var(--mono);font-size:clamp(44px,11vw,68px);font-weight:850;letter-spacing:-.03em;line-height:1}.cat{margin-top:6px;font-size:16px;font-weight:750}.bar{margin:18px 0 8px;height:12px;border-radius:999px;overflow:hidden;display:flex}.bar span{height:100%}.bar .s-under{background:var(--under);flex:18.5 1}.bar .s-normal{background:var(--normal);flex:6.5 1}.bar .s-over{background:var(--over);flex:5 1}.bar .s-ob1{background:var(--ob1);flex:5 1}.bar .s-ob2{background:var(--ob2);flex:5 1}.bar .s-ob3{background:var(--ob3);flex:5 1}.marker{position:relative;height:0}.marker .dot{top:-22px;transform:translateX(-50%);width:2px;height:16px}.marker .dot,.marker .dot:after{position:absolute;background:var(--ink)}.marker .dot:after{content:"";top:-5px;left:-4px;width:10px;height:10px;border-radius:50%}.healthy{margin-top:16px;color:var(--muted);font-size:13.5px}.healthy b{color:var(--ink);font-family:var(--mono)}.empty{margin-top:20px;text-align:center;color:var(--muted);padding:20px}.tools{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap;justify-content:center}.chip{background:rgba(45,212,191,.1);color:var(--teal);border:1px solid rgba(45,212,191,.3);border-radius:9px;padding:7px 12px;font-size:12.5px;font-weight:600;cursor:pointer}.chip:hover{background:rgba(45,212,191,.2)}.disclaimer{margin-top:16px;color:var(--muted);font-size:12px;text-align:center;line-height:1.6;border-top:1px solid var(--line);padding-top:14px}.footer{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;align-items:center;color:var(--muted);font-size:13px}.footer .sep{opacity:.4}