:root{--ink:#101828;--muted:#667085;--line:#e4e7ec;--surface:#fff;--canvas:#f4f7fb;--aqua:#15b8c8;--lime:#70db75;--navy:#111d31;--orange:#ff9f43;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Inter",ui-sans-serif,system-ui,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse 65% 45% at 100% 0,rgba(21,184,200,.12),transparent 66%),var(--canvas);color:var(--ink);letter-spacing:-.018em}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;height:72px;padding:0 max(24px,calc((100vw - 1120px)/2));border-bottom:1px solid rgba(16,24,40,.07);background:rgba(255,255,255,.84);backdrop-filter:blur(18px)}.brand{display:flex;align-items:center;color:var(--ink);font-size:20px;font-weight:900;letter-spacing:-.06em;text-decoration:none}.brand i{width:10px;height:10px;margin-right:7px;border-radius:50%;background:linear-gradient(135deg,var(--aqua),var(--lime))}.topbar nav{display:flex;align-items:center;gap:13px}.topbar nav>a{color:var(--muted);font-size:12px;font-weight:780;text-decoration:none}.topbar nav>a:hover{color:var(--ink)}.roundButton{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:44px;padding:8px 10px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);font:800 12px inherit;cursor:pointer}.roundButton.theme b{font-size:11px}main{max-width:1120px;margin:auto;padding:70px 24px}.intro{max-width:850px;margin-bottom:40px}.eyebrow{margin:0 0 10px;color:#087f8b;font-size:10px;font-weight:900;letter-spacing:.13em;text-transform:uppercase}.intro h1,.method h2{margin:0;letter-spacing:-.075em}.intro h1{font-size:clamp(49px,7vw,76px);line-height:.92}.intro>p:not(.eyebrow){max-width:700px;margin:21px 0 18px;color:var(--muted);font-size:16px;line-height:1.55}.introChips{display:flex;flex-wrap:wrap;gap:7px}.introChips span{padding:7px 9px;border:1px solid #cfe4e6;border-radius:999px;background:#f3fcfc;color:#087f8b;font-size:10px;font-weight:850}.workspace{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(330px,.85fr);gap:15px;align-items:start}.card{border:1px solid var(--line);border-radius:24px;background:var(--surface);box-shadow:0 19px 55px rgba(16,24,40,.07)}.inputCard{padding:21px}.cardHead{display:flex;align-items:center;gap:12px;margin-bottom:20px}.glyph{display:grid;place-items:center;width:43px;height:43px;flex:0 0 auto;border-radius:13px;background:var(--navy);color:#a9ef87;font-size:20px;font-weight:900}.cardHead h2{margin:0;font-size:22px;letter-spacing:-.05em}.cardHead p{margin:3px 0 0;color:var(--muted);font-size:11px}.fields{display:grid;grid-template-columns:1fr 1fr;gap:14px 12px}.field{min-width:0}.field label{display:block;margin-bottom:6px;color:#344054;font-size:11px;font-weight:800}.field input,.field select{width:100%;height:45px;padding:0 12px;border:1px solid #d7dde7;border-radius:12px;background:#fff;color:var(--ink);font:750 14px inherit;outline:0}.field input:focus,.field select:focus{border-color:var(--aqua);box-shadow:0 0 0 3px rgba(21,184,200,.12)}.field small{display:block;margin-top:5px;color:var(--muted);font-size:9px;line-height:1.35}.calculate{width:100%;margin-top:19px;padding:13px;border:0;border-radius:13px;background:var(--navy);color:#fff;font:850 12px inherit;cursor:pointer;box-shadow:0 11px 26px rgba(17,29,49,.15)}.calculate:hover{transform:translateY(-1px)}.formError{margin:12px 0 0;padding:10px 11px;border:1px solid #f2c47b;border-radius:11px;background:#fff6e9;color:#8b4c03;font-size:11px;line-height:1.45}.resultCard{position:sticky;top:88px;min-height:480px;padding:25px;overflow:hidden}.empty{display:grid;place-items:center;min-height:420px;text-align:center}.empty i{display:grid;place-items:center;width:55px;height:55px;margin-bottom:15px;border-radius:18px;background:#effbfc;color:#078898;font-size:25px;font-style:normal}.empty b{font-size:18px}.empty span{max-width:290px;margin-top:8px;color:var(--muted);font-size:12px;line-height:1.5}.rate{padding:18px 0 20px;border-bottom:1px solid var(--line)}.rate b{display:block;font-size:clamp(46px,6vw,64px);line-height:.9;letter-spacing:-.075em}.rate span{display:block;margin-top:8px;color:var(--muted);font-size:11px;font-weight:750}.resultGrid{display:grid;grid-template-columns:repeat(3,1fr);margin:17px 0}.resultGrid div{min-width:0;padding-right:10px;border-right:1px solid var(--line)}.resultGrid div+div{padding-left:10px}.resultGrid div:last-child{border:0}.resultGrid span{display:block;color:var(--muted);font-size:8px;font-weight:850;letter-spacing:.07em;text-transform:uppercase}.resultGrid b{display:block;margin-top:5px;font-size:14px}.interpretation{padding:12px 13px;border:1px solid #c8e9ec;border-radius:13px;background:#f0fbfc;color:#35616a;font-size:11px;line-height:1.45}.interpretation b{display:block;margin-bottom:3px;color:#087f8b}.calculation{margin-top:12px;border:1px solid var(--line);border-radius:13px}.calculation summary{padding:11px 12px;cursor:pointer;color:var(--ink);font-size:11px;font-weight:850}.calculation ol{display:grid;gap:7px;margin:0;padding:0 26px 13px 35px;color:var(--muted);font-size:10px;line-height:1.4}.handoff{display:flex;justify-content:center;margin-top:13px;padding:12px;border-radius:12px;background:var(--navy);color:#fff;font-size:11px;font-weight:850;text-decoration:none}.handoffNote{margin:8px 0 0;color:var(--muted);font-size:9px;line-height:1.4}.method{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:start;margin-top:72px;padding:40px;border-radius:28px;background:var(--navy);color:#fff}.method .eyebrow{color:#8de2ea}.method h2{font-size:clamp(34px,5vw,52px);line-height:.95}.method>div>p:last-child{color:#b9c7db;font-size:12px;line-height:1.5}.method ol{margin:0;padding:0;list-style:none}.method li{display:grid;grid-template-columns:38px 1fr;gap:12px;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.13)}.method li:last-child{border:0}.method li i{display:grid;place-items:center;width:33px;height:33px;border-radius:10px;background:rgba(112,219,117,.14);color:#a9ef87;font-size:10px;font-style:normal;font-weight:900}.method li b{display:block;font-size:12px}.method li span{display:block;margin-top:3px;color:#b9c7db;font-size:10px;line-height:1.45}.safety{margin-top:17px;padding:18px 20px;border:1px solid #f0c480;border-radius:17px;background:#fff7ea;color:#70430d}.safety b{font-size:12px}.safety p{margin:5px 0 0;font-size:10px;line-height:1.5}.safety .sources{margin-top:9px}.safety a{color:inherit;font-weight:800}footer{display:flex;justify-content:space-between;gap:20px;max-width:1120px;margin:auto;padding:25px 24px 42px;border-top:1px solid var(--line);color:var(--muted);font-size:11px}footer nav{display:flex;gap:15px}footer a{color:inherit;text-decoration:none}html[data-theme="dark"]{--ink:#f5f7fb;--muted:#a8b4c6;--line:rgba(192,211,236,.16);--surface:#101a2b;--canvas:#07101d;--navy:#eaf3ff}html[data-theme="dark"] body{background:radial-gradient(ellipse 65% 45% at 100% 0,rgba(51,183,198,.15),transparent 66%),var(--canvas)}html[data-theme="dark"] .topbar{background:rgba(7,16,29,.86)}html[data-theme="dark"] .roundButton,html[data-theme="dark"] .field input,html[data-theme="dark"] .field select{background:#0a1423;color:var(--ink)}html[data-theme="dark"] .glyph,html[data-theme="dark"] .calculate,html[data-theme="dark"] .handoff{background:#eaf3ff;color:#111d31}html[data-theme="dark"] .field label{color:#dce6f4}html[data-theme="dark"] .interpretation{border-color:rgba(82,215,223,.25);background:#102832;color:#c1dde2}html[data-theme="dark"] .method{border:1px solid var(--line);background:#101a2b}html[data-theme="dark"] .safety{border-color:rgba(255,191,112,.45);background:#332516;color:#ffdcae}@media(max-width:850px){.workspace{grid-template-columns:1fr}.resultCard{position:relative;top:auto;min-height:0}.empty{min-height:260px}.method{grid-template-columns:1fr;gap:20px}}@media(max-width:600px){.topbar{height:64px;padding:0 15px}.topbar nav>a{display:none}.roundButton.theme b{display:none}main{padding:42px 15px 52px}.intro h1{font-size:clamp(41px,13vw,57px)}.fields{grid-template-columns:1fr}.inputCard,.resultCard{padding:18px;border-radius:20px}.resultGrid{grid-template-columns:1fr}.resultGrid div,.resultGrid div+div{padding:8px 0;border-right:0;border-bottom:1px solid var(--line)}.resultGrid div:last-child{border:0}.method{margin-top:52px;padding:25px 19px;border-radius:21px}footer{display:grid;padding:22px 15px 34px}footer nav{flex-wrap:wrap}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important}}