:root{--ink:#172033;--muted:#657084;--line:#e5e9f0;--accent:#2864dc;--soft:#f4f7fc;--white:#fff}*{box-sizing:border-box}body{margin:0;background:var(--soft);color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.7}a{color:inherit;text-decoration:none}.container{max-width:1100px;margin:auto;padding:0 24px}.site-header{background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:2}.nav{min-height:72px;display:flex;align-items:center;gap:28px}.brand{font-size:1.4rem;font-weight:800;letter-spacing:-.04em}.brand span{color:var(--accent)}nav{display:flex;gap:18px;flex:1}nav a,.search-link{color:var(--muted);font-size:.9rem}.hero{padding:86px 0 72px;max-width:770px}.eyebrow{color:var(--accent);font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;margin:0 0 8px}.hero h1,.page-intro h1{font-size:clamp(2.4rem,7vw,4.8rem);line-height:1.12;letter-spacing:-.06em;margin:0 0 20px}.hero h1 span{color:var(--accent)}.lead{font-size:1.15rem;color:var(--muted);max-width:620px}.search-form{display:flex;gap:10px;margin-top:28px}.search-form input{flex:1;min-width:0}.search-form button,.primary{background:var(--accent);color:white;border:0}.search-form button,.button-row button{padding:13px 18px;border-radius:10px;font-weight:700;cursor:pointer}input{width:100%;background:white;border:1px solid var(--line);padding:13px 14px;border-radius:9px;font:inherit;color:var(--ink)}section{margin-bottom:64px}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.section-heading h2,h2{font-size:1.45rem;letter-spacing:-.03em}.section-heading a,.tool-link{color:var(--accent);font-weight:700}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tool-card,.category-card,.content-card,.calculator-card,.result-card{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:0 6px 25px rgba(33,54,90,.04)}.tool-card{min-height:185px;transition:.2s}.tool-card:hover,.category-card:hover{transform:translateY(-3px);border-color:#b9cafa}.tool-card h3{margin:8px 0 5px}.tool-card p,.category-card p{color:var(--muted);margin-top:0}.tool-arrow{float:right;color:var(--accent);font-size:1.3rem}.category-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.category-card{padding:20px}.category-card h3{margin:10px 0 5px}.category-card span:last-child{color:var(--accent);font-size:.85rem;font-weight:700}.category-icon{color:var(--accent)}.page-intro{padding:58px 0 34px}.page-intro h1{font-size:3rem}.page-intro p:last-child{color:var(--muted);font-size:1.08rem}.breadcrumbs{padding-top:25px;color:var(--muted);font-size:.9rem}.breadcrumbs a{color:var(--accent)}.calculator-layout{display:grid;grid-template-columns:1.35fr .85fr;gap:20px;margin-bottom:32px}.field-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.field-grid label{font-weight:700;font-size:.9rem}.field-grid input{display:block;margin-top:6px}.button-row{display:flex;gap:10px;margin-top:26px}.secondary,.copy-button{background:white;border:1px solid var(--line);color:var(--ink)}.result-card{background:#14284d;color:white;display:flex;flex-direction:column}.result-card .eyebrow{color:#a9c3ff}.result-value{font-size:clamp(2.3rem,6vw,3.6rem);font-weight:800;letter-spacing:-.06em;margin:8px 0}.result-unit{color:#b7c5df}.breakdown{border-top:1px solid rgba(255,255,255,.2);margin-top:auto;padding-top:14px;font-size:.9rem}.breakdown div{display:flex;justify-content:space-between;color:#d6def0}.copy-button{padding:10px;border-radius:8px;margin-top:18px;cursor:pointer}.content-card{max-width:780px}.content-card p{color:var(--muted)}summary{cursor:pointer;font-weight:700}.empty-state{text-align:center;padding:100px 20px}.inline-button{display:inline-block;padding:12px 18px;border-radius:9px;margin-top:15px}footer{background:#14284d;color:#d6def0;padding:38px 0;margin-top:80px}.footer-grid{display:flex;justify-content:space-between}.footer-grid p{color:#9eacc5}.footer-grid>div:last-child{display:flex;gap:18px;align-items:center}@media(max-width:760px){nav{display:none}.tool-grid{grid-template-columns:1fr 1fr}.category-grid{grid-template-columns:1fr 1fr}.calculator-layout{grid-template-columns:1fr}.hero{padding-top:54px}.search-form{flex-direction:column}.page-intro h1{font-size:2.5rem}.footer-grid,.footer-grid>div:last-child{flex-direction:column;align-items:flex-start}.field-grid{grid-template-columns:1fr}}
.tool-card-icon,.category-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:13px;background:#eaf1ff;color:#1d57bd;font-size:1.18rem;font-weight:850;line-height:1}.tool-category-label{display:inline-block;margin:10px 0 0 10px;vertical-align:top;color:#61718a;background:#f2f5f9;border-radius:999px;padding:4px 8px;font-size:.68rem;font-weight:750}.tool-card h3{clear:both;margin-top:14px}.category-card .category-icon{width:48px;height:48px;font-size:1.3rem}.category-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.all-tools-section .tool-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}@media(max-width:560px){.all-tools-section .tool-grid{grid-template-columns:1fr}.tool-card{min-height:auto}.category-grid{grid-template-columns:1fr 1fr}.category-card{padding:16px}}