:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#14313a;background:#eef8fb;--ink:#14313a;--muted:#5c7180;--card:#fffffb;--line:#d7e8ee;--accent:#127f96;--accent-dark:#0f5f75;--soft:#dff4f7}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top left,#fbfffb 0,#eef8fb 44%,#dceff4 100%);color:var(--ink)}a{color:var(--accent-dark)}.page-shell{max-width:1120px;margin:0 auto;padding:24px 18px 64px}.crumb{font-size:.92rem;color:var(--muted);margin:8px 0 28px}.site-nav{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:16px;margin:-16px 0 24px;padding:12px 16px;background:rgba(255,255,255,.86);border:1px solid #e1e5ee;border-radius:24px;box-shadow:0 10px 24px rgba(22,31,54,.06);backdrop-filter:blur(12px)}.site-brand{display:inline-flex;align-items:center;gap:10px;color:#172033;text-decoration:none;font-weight:800}.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:12px;background:#172033;color:#fff;font-weight:900}.site-nav a:not(.site-brand){color:#4b5565;text-decoration:none;font-weight:700;font-size:.95rem}.site-nav a:hover{text-decoration:underline}.hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(270px,.65fr);gap:22px;align-items:stretch}.eyebrow{display:inline-flex;margin:0 0 12px;padding:7px 11px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--accent-dark);font-weight:900;font-size:.82rem;text-transform:uppercase;letter-spacing:.06em}.hero h1{font-size:clamp(2.15rem,7vw,5rem);line-height:.92;letter-spacing:-.065em;margin:0 0 18px}.lede{font-size:clamp(1rem,2.5vw,1.22rem);line-height:1.65;color:#405a64;max-width:720px}.result-card,.calculator,.copy-block{background:rgba(255,255,251,.92);border:1px solid var(--line);box-shadow:0 18px 45px rgba(20,64,77,.08);border-radius:28px}.result-card{padding:24px;display:flex;flex-direction:column;justify-content:center;min-height:220px;background:linear-gradient(160deg,#fffffb,#d9f3f7)}.result-card .label{font-weight:900;color:var(--accent-dark);text-transform:uppercase;letter-spacing:.08em;font-size:.8rem}.result-card strong{font-size:clamp(2.15rem,7vw,4.6rem);line-height:.95;margin:12px 0;color:var(--accent-dark);letter-spacing:-.05em}.result-card span:last-child{line-height:1.5;color:#3f535b}.calculator{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:22px;margin-top:26px;padding:20px}form{display:grid;gap:16px}fieldset{border:1px solid var(--line);border-radius:22px;padding:18px;background:#fffffb}legend{font-weight:900;padding:0 8px;color:#22343a}.grid{display:grid;gap:14px}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}label{display:grid;gap:7px;font-weight:850;color:#263e46}input,select{width:100%;border:1px solid var(--line);border-radius:15px;padding:12px 13px;font:inherit;color:var(--ink);background:#fff}input:focus,select:focus{outline:3px solid rgba(18,127,150,.18);border-color:var(--accent)}.hint{margin:12px 0 0;color:var(--muted);line-height:1.55;font-size:.94rem}.preset-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.preset-row button{border:1px solid #b8dce4;background:#eefbfc;color:var(--accent-dark);border-radius:999px;padding:9px 12px;font-weight:900;cursor:pointer}.preset-row button:hover{background:#dff4f7}.breakdown{border:1px solid var(--line);border-radius:22px;background:linear-gradient(180deg,#ffffff,#eefbfc);padding:18px}.breakdown h2{margin:0 0 12px}dl{display:grid;gap:12px;margin:0}dl div{padding:12px;border-radius:16px;background:#fff;border:1px solid #dcebef}dt{font-size:.82rem;color:var(--muted);font-weight:850;text-transform:uppercase;letter-spacing:.06em}dd{margin:4px 0 0;font-size:1.45rem;font-weight:950;color:#123844}.copy-block{margin-top:22px;padding:24px}.copy-block h2{margin-top:0;font-size:1.55rem}.copy-block p,.copy-block li{line-height:1.68;color:#425a64}.examples ul{padding-left:20px}.faq details{border-top:1px solid var(--line);padding:14px 0}.faq details:first-of-type{border-top:0}.faq summary{cursor:pointer;font-weight:900;color:#243d45}@media (max-width:820px){.hero,.calculator{grid-template-columns:1fr}.result-card{min-height:180px}.grid.three{grid-template-columns:1fr}.page-shell{padding-top:16px}}@media (max-width:640px){.site-nav{margin-top:-8px;padding:10px 12px;border-radius:20px}.site-nav a:not(.site-brand){font-size:.9rem}.brand-mark{width:30px;height:30px}.site-brand span:last-child{max-width:180px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.hero h1{font-size:clamp(2.4rem,13vw,3.6rem)}.calculator,.copy-block,.result-card{border-radius:22px}.calculator{padding:14px}fieldset{padding:15px}.preset-row button{width:100%}}