:root{--bg:#f6f8fb;--surface:#fff;--text:#172033;--muted:#5e6b82;--line:#dce3ee;--primary:#2563eb;--primary-dark:#1d4ed8;--primary-soft:#eff6ff;--success:#0f766e;--danger:#b42318;--radius:14px;--shadow:0 8px 28px #1524420f;color:var(--text);background:var(--bg);font-synthesis:none;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);min-width:320px;color:var(--text);margin:0;line-height:1.6}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}img,svg{max-width:100%;display:block}.container{width:min(1120px,100% - 32px);margin-inline:auto}.narrow{width:min(780px,100% - 32px);margin-inline:auto}.site-main{min-height:70vh}.section{padding:38px 0}.section-tight{padding:22px 0}.section-title{margin:0 0 6px;font-size:clamp(1.4rem,3vw,2rem);line-height:1.25}.section-intro{color:var(--muted);margin:0 0 22px}.eyebrow{color:var(--primary);letter-spacing:.08em;text-transform:uppercase;margin:0 0 8px;font-size:.82rem;font-weight:750}.muted{color:var(--muted)}.skip-link{z-index:100;background:var(--text);color:#fff;border-radius:8px;padding:10px 14px;position:fixed;top:8px;left:8px;transform:translateY(-150%)}.skip-link:focus{transform:translateY(0)}.site-header{z-index:20;border-bottom:1px solid var(--line);backdrop-filter:blur(10px);background:#fffffff5;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:24px;min-height:66px;display:flex}.brand{letter-spacing:-.02em;align-items:center;gap:10px;font-weight:800;display:inline-flex}.brand-mark{background:var(--primary);color:#fff;border-radius:10px;place-items:center;width:34px;height:34px;font-weight:850;display:grid}.main-nav{color:#37445a;align-items:center;gap:24px;font-size:.95rem;display:flex}.main-nav a:hover{color:var(--primary)}.header-search{color:var(--primary);font-weight:700}.mobile-menu{display:none;position:relative}.mobile-menu summary{cursor:pointer;border:1px solid var(--line);border-radius:9px;padding:9px;list-style:none}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-nav{border:1px solid var(--line);min-width:220px;box-shadow:var(--shadow);background:#fff;border-radius:12px;padding:10px;display:grid;position:absolute;top:48px;right:0}.mobile-nav a{border-radius:8px;padding:10px}.hero{text-align:center;background:radial-gradient(circle at 50% 0,#edf4ff 0,#0000 55%);padding:64px 0 42px}.hero h1{letter-spacing:-.055em;margin:0;font-size:clamp(2.2rem,8vw,4.6rem);line-height:1}.hero-lead{margin:18px auto 4px;font-size:clamp(1.15rem,3vw,1.45rem);font-weight:700}.hero-sub{color:var(--muted);margin:0 auto}.search-box{width:min(680px,100%);margin:30px auto 0;position:relative}.search-box 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var(--line);border-radius:var(--radius);background:#fff;padding:28px}.ad-slot{color:#7b879a;letter-spacing:.12em;text-transform:uppercase;background:#f9fafb;border:1px dashed #ccd5e3;border-radius:10px;place-items:center;min-height:100px;padding:16px;font-size:.7rem;display:grid}.ad-slot.tall{min-height:180px}.breadcrumb{color:var(--muted);padding:22px 0 0;font-size:.86rem}.breadcrumb ol{flex-wrap:wrap;gap:7px;margin:0;padding:0;list-style:none;display:flex}.breadcrumb li:not(:last-child):after{content:"/";color:#a1aaba;margin-left:7px}.breadcrumb a:hover{color:var(--primary)}.tool-header{padding:28px 0 22px}.tool-header h1,.page-header h1{letter-spacing:-.04em;margin:0 0 10px;font-size:clamp(2rem,6vw,3.1rem);line-height:1.08}.tool-header p,.page-header p{max-width:720px;color:var(--muted);margin:0;font-size:1.07rem}.page-header{padding:46px 0 26px}.calculator-shell{border:1px solid 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