body{min-width:320px;line-height:1.6;background:var(--bg);color:var(--text)}.container{width:min(calc(100% - 40px),var(--container));margin-inline:auto}.skip-link{position:absolute;left:-999px}.skip-link:focus{left:1rem;top:1rem;z-index:10;background:var(--surface);padding:.5rem 1rem}.site-header{position:sticky;top:0;z-index:5;background:var(--header-bg);border-bottom:1px solid var(--border);backdrop-filter:blur(10px)}.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:1rem}.brand{font-weight:800;font-size:1.25rem;letter-spacing:-.04em}.brand-mark{color:var(--primary)}.nav-list{display:flex;align-items:center;gap:1.35rem;font-size:.92rem;color:var(--muted)}.nav-list a[aria-current=page],.nav-list a:hover{color:var(--primary)}.header-actions{display:flex;align-items:center;gap:.55rem}.theme-toggle{display:grid;place-items:center;width:2.3rem;height:2.3rem;padding:0;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--primary);font-size:1.15rem;line-height:1;transition:background .2s,border-color .2s,color .2s}.theme-toggle:hover{border-color:var(--primary);background:var(--bg)}.theme-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.menu-toggle{display:none;border:0;background:none;font-size:1.4rem}.main{min-height:calc(100vh - 300px)}.section{padding:5rem 0}.section-title{font-size:clamp(1.8rem,4vw,2.6rem);letter-spacing:-.05em;line-height:1.2}.section-lead{max-width:680px;color:var(--muted);margin-top:1rem}.site-footer{background:var(--surface);border-top:1px solid var(--border);padding:3rem 0 2rem}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:2rem}.footer-title{font-weight:700;margin-bottom:.7rem}.footer-links{display:grid;gap:.45rem;color:var(--muted);font-size:.9rem}.copyright{color:var(--muted);font-size:.85rem;margin-top:2.5rem;border-top:1px solid var(--border);padding-top:1.5rem}@media(max-width:760px){.nav-list{display:none;position:absolute;inset:68px 0 auto;background:var(--surface);padding:1rem 20px;flex-direction:column;align-items:flex-start;border-bottom:1px solid var(--border)}.nav-list.is-open{display:flex}.menu-toggle{display:block}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>:first-child{grid-column:1/-1}.section{padding:3.5rem 0}.header-actions{gap:.35rem}.theme-toggle{width:2.15rem;height:2.15rem}}