.site-header{height:var(--header-height);padding:0 var(--gutter);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);position:relative;z-index:20;background:var(--bg)}.brand{display:flex;gap:15px;align-items:center;font-size:14px;font-weight:700;line-height:1.2;letter-spacing:.045em}.brand small{display:block;color:var(--muted);font-family:var(--mono);font-size:9px;font-weight:400;letter-spacing:.21em;margin-top:8px}.brand-orbit{font-size:37px;line-height:1;color:var(--accent);font-weight:400}.top-nav{display:flex;gap:36px;font-size:13px;color:#c0c9d2}.top-nav a:hover{color:var(--accent)}.search-trigger{display:flex;gap:12px;align-items:center;background:none;border:0;color:var(--muted);font-size:12px}.search-trigger>span:first-child{font-size:28px;line-height:1}kbd{font:11px var(--mono);border:1px solid var(--line);padding:1px 6px;color:var(--muted)}.section-wrap{max-width:1600px;margin-inline:auto;padding:90px var(--gutter)}.section-heading{display:grid;grid-template-columns:1.3fr .8fr;gap:60px;align-items:end;margin-bottom:55px}.section-heading h2{margin-bottom:0}.section-heading>p{max-width:360px;color:var(--muted);font-size:15px;margin:0 0 4px}.button-primary{display:inline-flex;align-items:center;justify-content:space-between;gap:38px;padding:16px 23px;background:var(--accent-deep);color:#dce9ec;font-size:13px;border:1px solid var(--accent-border);transition:background .2s,border-color .2s}.button-primary:hover{background:#255562;border-color:#688f92}.button-primary span{font-size:22px;line-height:1}.text-link{display:inline-flex;align-items:center;gap:20px;font-size:12px;border-bottom:1px solid #657987;padding:9px 0}.text-link:hover{color:var(--accent)}.chapter-row{display:grid;grid-template-columns:70px 88px minmax(0,1fr) 40px;gap:36px;align-items:center;border-top:1px solid var(--line);padding:28px 0;transition:background .2s}.chapter-row:last-child{border-bottom:1px solid var(--line)}.chapter-number{font:32px var(--serif);color:#6b8195;align-self:start;padding-top:12px}.chapter-row>img{width:86px;height:129px;object-fit:cover;transition:transform .3s}.chapter-row:hover>img{transform:translateY(-5px)}.chapter-row h3{font-size:26px;font-weight:400;margin:8px 0 8px}.chapter-row p{font-size:13px;color:var(--muted);margin:0}.row-arrow{font-size:28px;color:var(--accent)}.chapter-row:hover h3{color:var(--accent)}.approach{border-top:1px solid var(--line);background:linear-gradient(110deg,rgba(24,42,64,.18),transparent)}.approach h2{margin:20px 0 55px}.approach-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:60px}.approach-columns span{font:10px var(--mono);color:var(--accent);letter-spacing:.11em}.approach-columns h3{font-weight:400;font-size:23px;margin:20px 0 15px}.approach-columns p{color:var(--muted);font-size:14px;max-width:320px}.closing{position:relative;overflow:hidden;border-top:1px solid var(--line);padding-block:110px}.closing h2{font-size:clamp(44px,4.7vw,78px);position:relative;z-index:1}.closing .button-primary{position:relative;z-index:1}.closing-orbit{position:absolute;right:13%;top:45px;color:#1e364a;opacity:.7;font-size:260px;line-height:1}.site-footer{padding:48px var(--gutter);border-top:1px solid var(--line);display:flex;gap:30px;align-items:start;justify-content:space-between;color:var(--muted);font-size:12px}.footer-brand{color:var(--text);font-size:14px}.footer-brand span{color:var(--muted)}.site-footer p{font-size:10px;margin:9px 0 0;max-width:360px}.edition{font:9px var(--mono);letter-spacing:.12em;white-space:nowrap;padding-top:4px}.guide-index{padding-top:90px}.guide-index h1{font-size:clamp(58px,6vw,90px);margin:25px 0}.guide-index .chapter-list{margin-top:65px}.edition-note{max-width:580px;font-size:12px;color:var(--muted)}dialog{color:var(--text);background:#0e1825;border:1px solid #35465b}dialog::backdrop{background:rgba(2,6,13,.82);backdrop-filter:blur(7px)}.search-dialog{width:min(650px,calc(100% - 36px));max-height:80vh;padding:28px}.dialog-top{display:flex;justify-content:space-between;gap:20px;align-items:center}.dialog-top h2{font-size:30px;margin-bottom:18px}.dialog-top button{font-size:28px;align-self:start;background:none;border:0}.search-dialog input{width:100%;background:#080f1a;border:1px solid #415269;color:var(--text);padding:15px;font-size:15px}.search-hint{font-size:11px;color:var(--muted);margin:12px 0 20px}#search-results>a{display:grid;grid-template-columns:30px 1fr;gap:5px 12px;padding:17px 0;border-top:1px solid var(--line)}#search-results>a span{color:var(--accent);grid-row:span 2;font:20px var(--serif)}#search-results>a strong{font-size:15px;font-weight:400}#search-results>a small{font-size:11px;color:var(--muted)}#search-results>a:hover strong{color:var(--accent)}
.language-nav{display:flex;gap:4px;margin-left:auto;font:9px var(--mono);letter-spacing:.08em}.language-nav a{padding:7px;color:var(--muted)}.language-nav a:hover,.language-nav a[aria-current]{color:var(--accent)}