:root{--bg:#f6f7fb;--card:#fff;--text:#142033;--muted:#5f6b7a;--border:#dde4ee;--accent:#d71920;--accent-dark:#ad1117;--soft:#fff2f3;--soft-blue:#eef5ff;--shadow:0 18px 45px rgba(20,32,51,.08);--radius:24px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.55}a{color:inherit}.wrap{width:min(1120px,calc(100% - 32px));margin:0 auto}header{background:radial-gradient(circle at 80% 15%,rgba(215,25,32,.13),transparent 32%),linear-gradient(135deg,#fff 0%,#fff7f7 100%);border-bottom:1px solid var(--border)}nav{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:18px 0}.logo{display:inline-flex;align-items:center;gap:10px;font-size:1.4rem;font-weight:900;letter-spacing:-.05em;text-decoration:none}.logo-mark{width:34px;height:34px;display:inline-grid;place-items:center;background:var(--accent);color:#fff;border-radius:10px;font-size:.9rem}.logo span:last-child{color:var(--accent)}.nav-links{display:flex;gap:18px;align-items:center;color:var(--muted);font-weight:650;font-size:.94rem}.nav-links a{text-decoration:none}.nav-links a:hover{color:var(--accent)}.hero{padding:68px 0 62px;display:grid;grid-template-columns:1.18fr .82fr;gap:34px;align-items:center}.hero.single{display:block;max-width:900px}.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);border-radius:999px;padding:8px 12px;color:var(--muted);font-weight:750;font-size:.9rem;margin-bottom:18px}.dot{width:8px;height:8px;background:var(--accent);border-radius:50%}h1{font-size:clamp(2.35rem,5.2vw,5rem);line-height:.97;margin:0 0 22px;letter-spacing:-.07em;max-width:920px}.lead{color:var(--muted);font-size:1.12rem;max-width:760px;margin:0 0 30px}.cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.btn{border:0;background:var(--accent);color:#fff;padding:13px 18px;border-radius:999px;font-weight:850;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;min-height:46px}.btn:hover{background:var(--accent-dark)}.btn.secondary{background:#fff;color:var(--text);border:1px solid var(--border)}.summary-card{background:rgba(255,255,255,.86);backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:30px;padding:26px;box-shadow:var(--shadow)}.summary-card h2{margin:0 0 10px;font-size:2rem;letter-spacing:-.04em}.summary-card p{margin:0 0 18px;color:var(--muted)}.mini-list{display:grid;gap:10px;margin-top:18px}.mini-item{display:flex;gap:10px;padding:12px;border-radius:16px;background:#fff;border:1px solid var(--border);color:var(--muted);font-size:.95rem}.check{color:var(--accent);font-weight:900}main{padding:48px 0 72px}.section-head{margin-bottom:26px}.section-title{margin:0 0 8px;font-size:clamp(1.75rem,3vw,2.55rem);letter-spacing:-.05em}.section-subtitle{margin:0;color:var(--muted);max-width:760px;font-size:1.02rem}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-bottom:44px}.tool-card,.tool,.content-box,.box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:0 12px 28px rgba(20,32,51,.05)}.tool-card h3,.tool h2,.content-box h2,.box h3{margin:0 0 8px;font-size:1.35rem;letter-spacing:-.04em}.tool-card p,.tool p,.content-box p,.content-box li,.box p{color:var(--muted)}.tool-card a{color:var(--accent);font-weight:850;text-decoration:none}.tool-page-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:22px;align-items:start}.sidebar{position:sticky;top:18px;display:grid;gap:16px}.content-stack{display:grid;gap:18px}.related-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}.related-list a{text-decoration:none;color:var(--muted);font-weight:700}.related-list a:hover{color:var(--accent)}label{display:block;font-size:.91rem;font-weight:800;margin:12px 0 6px}input,select{width:100%;min-height:48px;padding:12px 13px;border-radius:14px;border:1px solid var(--border);font:inherit;background:#fff;outline:none}input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(215,25,32,.1)}.row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.result{margin-top:16px;padding:15px;border-radius:18px;background:var(--soft);border:1px solid #ffd1d5;font-weight:850}.note{font-size:.9rem;color:var(--muted);margin-top:12px}.formula{background:#111827;color:#fff;border-radius:18px;padding:16px;font-weight:800;overflow-x:auto}.info-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:20px}.info-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:0 12px 28px rgba(20,32,51,.04)}.info-card h3{margin:0 0 8px;letter-spacing:-.03em}.info-card p{color:var(--muted);margin:0}.faq{background:var(--card);border:1px solid var(--border);border-radius:30px;padding:28px;box-shadow:0 12px 28px rgba(20,32,51,.04)}details{border-top:1px solid var(--border);padding:16px 0}details:first-of-type{border-top:0}summary{cursor:pointer;font-weight:850;letter-spacing:-.02em}details p{color:var(--muted);margin-bottom:0}.disclaimer{margin-top:28px;padding:20px;border-radius:var(--radius);background:var(--soft-blue);border:1px solid #d6e8ff;color:#31506f}.breadcrumb{font-size:.92rem;color:var(--muted);margin-bottom:16px}.breadcrumb a{color:var(--muted);text-decoration:none}.breadcrumb a:hover{color:var(--accent)}footer{border-top:1px solid var(--border);padding:30px 0;color:var(--muted);font-size:.92rem;background:#fff}.footer-row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}@media(max-width:940px){.hero,.grid,.info-grid,.tool-page-layout{grid-template-columns:1fr}.summary-card{max-width:620px}.sidebar{position:static}}@media(max-width:620px){nav{align-items:flex-start;flex-direction:column}.nav-links{flex-wrap:wrap;gap:12px}.hero{padding:48px 0 42px}.row{grid-template-columns:1fr}.tool,.faq,.summary-card,.content-box,.tool-card{border-radius:22px}}