:root{--bg:#f6f8fb;--card:#fff;--text:#142033;--muted:#5b6678;--line:#dce3ec;--brand:#075aa5;--brand2:#06467f;--accent:#e9f8ff;--dark:#0d1726;--ok:#0f766e;--warn:#9a6700;--shadow:0 12px 34px rgba(16,24,40,.08);--radius:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.65}a{color:var(--brand2);text-decoration:none}a:hover{text-decoration:underline}.container{width:min(1160px,calc(100% - 32px));margin-inline:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.nav-wrap{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;color:var(--dark);text-decoration:none}.brand:hover{text-decoration:none}.brand-logo{display:block;width:245px;height:auto;max-height:58px;object-fit:contain;object-position:left center}.nav{display:flex;align-items:center;gap:6px}.nav a{color:#334155;font-weight:650;padding:10px 12px;border-radius:10px}.nav a:hover{background:#f0fdfa;text-decoration:none;color:var(--brand2)}.menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 11px;font-size:20px}.hero{padding:72px 0 46px;background:linear-gradient(180deg,#fff 0%,#f6f8fb 100%)}.eyebrow{display:inline-flex;gap:8px;align-items:center;background:var(--accent);border:1px solid #bff3ec;color:var(--brand2);padding:7px 11px;border-radius:999px;font-weight:750;font-size:.9rem}.hero h1,.page-hero h1{font-size:clamp(2.3rem,6vw,4.3rem);line-height:1.02;letter-spacing:-.045em;margin:18px 0 18px;max-width:900px}.hero p,.page-hero p{font-size:clamp(1.05rem,2vw,1.25rem);color:var(--muted);max-width:790px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.btn{border:0;border-radius:12px;padding:13px 18px;font-weight:800;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand2);text-decoration:none}.btn-secondary{background:#fff;border:1px solid var(--line);color:var(--text)}.btn-secondary:hover{text-decoration:none;background:#f8fafc}.trust-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:34px;max-width:850px}.trust-item{background:#fff;border:1px solid var(--line);padding:14px 16px;border-radius:14px;font-weight:700;color:#405066}.section{padding:48px 0}.section h2{font-size:clamp(1.7rem,3vw,2.4rem);letter-spacing:-.03em;margin:0 0 12px}.section-lead{color:var(--muted);max-width:760px;margin:0 0 28px}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.tool-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 1px 1px rgba(0,0,0,.01);transition:.2s}.tool-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#cbd7e5}.tool-card h3{margin:12px 0 8px;font-size:1.2rem}.tool-card p{color:var(--muted);margin:0 0 16px}.tag{display:inline-block;background:#eef2f6;border-radius:999px;padding:5px 9px;font-size:.78rem;font-weight:800;color:#4a586b}.tool-link{font-weight:800}.category-title{margin:30px 0 14px;font-size:1.35rem}.search-box{background:#fff;border:1px solid var(--line);border-radius:14px;display:flex;align-items:center;padding:3px 4px;max-width:640px;box-shadow:0 3px 14px rgba(16,24,40,.04)}.search-box input{border:0;outline:0;padding:13px 14px;font-size:1rem;width:100%;background:transparent}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px}.article-card,.calculator-card,.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 2px 12px rgba(16,24,40,.04)}.article-card{padding:28px}.article-card h2{margin-top:30px;font-size:1.55rem}.article-card h3{margin-top:24px}.article-card p,.article-card li{color:#425167}.article-card ul,.article-card ol{padding-left:22px}.calculator-card{padding:26px;margin-bottom:24px}.calculator-card h2{margin-top:0}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.field{display:flex;flex-direction:column;gap:7px}.field label{font-weight:800;font-size:.94rem}.field small{color:var(--muted)}.field input,.field select,.field textarea{width:100%;border:1px solid #cfd8e4;border-radius:11px;padding:12px 13px;font:inherit;background:#fff;color:var(--text);outline:0}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,118,110,.12)}.calc-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.results{margin-top:22px;display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.result{background:#f8fafc;border:1px solid var(--line);border-radius:14px;padding:15px}.result .label{font-size:.82rem;font-weight:800;color:#667085;text-transform:uppercase;letter-spacing:.04em}.result .value{font-size:1.65rem;font-weight:900;letter-spacing:-.03em;margin-top:3px}.result.primary{background:#ecfdf5;border-color:#a7f3d0}.formula{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#f8fafc;border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:10px;padding:15px;overflow-x:auto}.note{background:#fffbeb;border:1px solid #fde68a;border-radius:12px;padding:14px;color:#713f12}.side-card{padding:20px;position:sticky;top:92px}.side-card h3{margin-top:0}.side-card a{display:block;padding:8px 0;border-bottom:1px solid #eef2f6;font-weight:700}.side-card a:last-child{border-bottom:0}.breadcrumb{font-size:.9rem;color:#718096;margin-bottom:15px}.breadcrumb a{color:#526173}.page-hero{padding:46px 0 28px;background:#fff;border-bottom:1px solid var(--line)}.page-hero h1{font-size:clamp(2.2rem,5vw,3.7rem);margin-top:12px}.page-hero p{font-size:1.08rem}.meta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;color:#657386;font-size:.9rem}.faq details{background:#fff;border:1px solid var(--line);border-radius:13px;padding:14px 16px;margin-bottom:10px}.faq summary{font-weight:800;cursor:pointer}.faq p{color:#526173}.footer{background:var(--dark);color:#b8c2d1;margin-top:50px;padding:48px 0 28px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:30px}.footer h3,.footer h4{color:#fff}.footer a{display:block;color:#cbd5e1;padding:4px 0}.footer-bottom{border-top:1px solid #243246;margin-top:30px;padding-top:20px;font-size:.9rem}.legal{max-width:860px}.legal h2{margin-top:34px}.legal p,.legal li{color:#475569}.callout{background:#ecfeff;border:1px solid #a5f3fc;border-radius:14px;padding:18px;margin:24px 0}.method-box{background:#f8fafc;border:1px solid var(--line);border-radius:14px;padding:18px}.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.pill{background:#eef7f6;border:1px solid #d1eeea;padding:6px 10px;border-radius:999px;font-size:.82rem;font-weight:800;color:#275b57}.hidden{display:none!important}.no-results{padding:24px;text-align:center;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:14px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:absolute;left:-9999px;top:auto}.skip-link:focus{left:12px;top:12px;z-index:1000;background:#fff;padding:10px;border:2px solid var(--brand)}
@media(max-width:900px){.tool-grid{grid-template-columns:repeat(2,1fr)}.content-grid{grid-template-columns:1fr}.side-card{position:static}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.menu-btn{display:block}.nav{display:none;position:absolute;left:16px;right:16px;top:64px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav a{padding:12px}.hero{padding-top:50px}.trust-strip{grid-template-columns:1fr}.tool-grid,.form-grid,.results{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.calculator-card,.article-card{padding:20px}.container{width:min(100% - 24px,1160px)}}

.nav a.active{background:#edf8ff;color:#06467f}.footer-brand{display:inline-block;margin-bottom:10px}.footer-logo{display:block;width:220px;height:auto;max-width:100%;background:#fff;border-radius:12px;padding:8px 10px}.footer-brand:hover{text-decoration:none}@media(max-width:720px){.brand-logo{width:205px;max-height:52px}.nav-wrap{min-height:68px}}