.site-header{background:var(--navy-dark);color:#fff}.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-size:1.25rem;font-weight:800;color:#fff;text-decoration:none}.site-header nav,.site-footer nav{display:flex;gap:24px;flex-wrap:wrap}.site-header nav a{color:#fff;text-decoration:none;font-weight:700}.hero{background:#eaf2f6;padding:64px 0 58px;border-bottom:1px solid var(--line)}.hero p:last-child{font-size:1.12rem;color:#40545f;max-width:760px}.calculator-shell{padding-block:38px 64px}.split-layout,.detail-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(330px,.85fr);gap:24px;align-items:start}.detail-main{display:grid;gap:22px}.section-heading{margin:42px 0 22px}.section-heading p:last-child{color:var(--muted)}.notice-section{padding:58px 0;background:#edf3f5;border-top:1px solid var(--line)}.site-footer{background:#112c40;color:#eaf0f3;padding:44px 0 20px}.footer-grid{display:flex;justify-content:space-between;gap:36px}.site-footer a{color:#fff}.site-footer p{color:#c9d6dd}.copyright{text-align:center;margin:34px 0 0;font-size:.9rem}.sticky{position:sticky;top:18px}