:root{--bg:#08111f;--panel:#0e1b2e;--panel2:#12243c;--text:#eef6ff;--muted:#aab9cc;--accent:#ff9d2e;--accent2:#31c2ff;--line:#263a56;--good:#9cffce}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:radial-gradient(circle at top left,#18395e 0,#08111f 42%,#050912 100%);color:var(--text);line-height:1.55}a{color:inherit}main{min-height:70vh}.wrap{width:min(1120px,92vw);margin:auto}.nav{position:sticky;top:0;z-index:10;background:rgba(8,17,31,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}.brand{font-weight:850;letter-spacing:-.03em;text-decoration:none;font-size:1.25rem}.brand span{color:var(--accent)}.nav-links{display:flex;gap:18px;color:var(--muted);font-size:.95rem}.nav-links a{text-decoration:none}.hero{padding:72px 0 38px}.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:28px;align-items:center}.eyebrow{color:var(--good);font-weight:750;text-transform:uppercase;font-size:.78rem;letter-spacing:.12em}.h1{font-size:clamp(2.2rem,6vw,4.8rem);line-height:.95;letter-spacing:-.07em;margin:12px 0 18px}.lead{color:var(--muted);font-size:1.18rem;max-width:680px}.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:12px 18px;text-decoration:none;font-weight:800;border:1px solid var(--line)}.primary{background:var(--accent);color:#111827;border-color:transparent}.secondary{background:rgba(255,255,255,.05)}.card{background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.035));border:1px solid var(--line);border-radius:24px;box-shadow:0 20px 60px rgba(0,0,0,.25)}.calc-card{padding:22px}.quick-output{font-size:3rem;font-weight:900;letter-spacing:-.05em;margin:8px 0;color:white}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tools{padding:34px 0}.tool-card{padding:20px;text-decoration:none;display:block;transition:transform .15s ease,border-color .15s ease}.tool-card:hover{transform:translateY(-2px);border-color:rgba(255,157,46,.75)}.tool-card h2,.tool-card h3{margin:.2rem 0 .45rem;font-size:1.15rem}.tool-card p{margin:0;color:var(--muted);font-size:.94rem}.section-title{font-size:clamp(1.8rem,4vw,2.8rem);letter-spacing:-.05em;margin:0 0 12px}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:18px}.calculator{display:grid;grid-template-columns:.9fr 1.1fr;gap:22px;padding:36px 0}.form{padding:22px}.field{margin-bottom:14px}label{display:flex;justify-content:space-between;color:var(--muted);font-weight:700;font-size:.92rem;margin-bottom:7px}input{width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:#07101d;color:var(--text);font-size:1rem}input:focus{outline:2px solid rgba(49,194,255,.35);border-color:var(--accent2)}.result{padding:28px;display:flex;flex-direction:column;justify-content:center}.result-value{font-size:clamp(3rem,9vw,6.5rem);font-weight:950;line-height:.9;letter-spacing:-.08em}.result-unit{color:var(--accent);font-size:1.4rem;font-weight:850;margin-top:8px}.copyline{margin-top:18px;color:var(--muted)}.content{padding:18px 0 56px}.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.content .card{padding:22px}.content h2{letter-spacing:-.035em}.list{padding-left:20px;color:var(--muted)}.footer{border-top:1px solid var(--line);padding:26px 0;color:var(--muted);font-size:.92rem}.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.breadcrumbs{color:var(--muted);font-size:.9rem;margin-bottom:18px}.breadcrumbs a{text-decoration:none;color:#dbeafe}.chip{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:6px 10px;color:var(--muted);font-size:.82rem;margin:4px 6px 0 0}.note{font-size:.9rem;color:var(--muted);border-left:3px solid var(--accent);padding-left:12px}.keywords{padding:28px 0 60px}.kw-grid{columns:3 240px;color:var(--muted)}.kw-grid li{break-inside:avoid;margin:0 0 7px}@media(max-width:800px){.hero-grid,.calculator,.content-grid{grid-template-columns:1fr}.grid{grid-template-columns:1fr}.nav-links{display:none}.hero{padding-top:42px}.section-head{display:block}.quick-output{font-size:2.35rem}}