:root{--accent:#0e464c;--accent-dark:color-mix(in srgb,var(--accent) 78%,#000);--ink:#182027;--muted:#667079;--paper:#f6f3ed;--panel:#fff;--line:#d8d3c8;--soft:#ece8df}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:Georgia,"Times New Roman",serif}
button,input,a{font:inherit}
.skip{position:fixed;left:14px;top:-80px;z-index:20;padding:10px 14px;border-radius:8px;background:#fff;color:#111;font-weight:700}
.skip:focus{top:12px}
.topbar{position:sticky;top:0;z-index:8;display:grid;grid-template-columns:minmax(210px,1fr) minmax(280px,430px) auto;gap:20px;align-items:center;padding:15px clamp(18px,3vw,34px);background:var(--accent);color:#fff;box-shadow:0 8px 24px #0002}
.brand{display:flex;min-width:0;flex-direction:column;gap:3px}
.brand span{text-transform:uppercase;letter-spacing:.14em;font:700 10px/1.2 Arial,sans-serif;opacity:.75}
.brand strong{font:700 20px/1.25 Arial,sans-serif}
.search-wrap{display:grid;grid-template-columns:1fr;gap:5px}
.search-wrap label{font:700 12px/1.2 Arial,sans-serif}
#search{width:100%;min-width:0;padding:11px 13px;border:1px solid #fff8;border-radius:9px;background:#fff;color:#182027;outline:0}
#search:focus{border-color:#fff;box-shadow:0 0 0 4px #fff4}
.search-meta{min-height:14px;font:600 11px/1.2 Arial,sans-serif;color:#fff;opacity:.82}
.topbar nav a{display:inline-flex;align-items:center;justify-content:center;padding:10px 14px;border:1px solid #fff9;border-radius:999px;color:#fff;font:700 13px/1.2 Arial,sans-serif;text-decoration:none;white-space:nowrap}
.topbar nav a:hover{background:#fff;color:var(--accent)}
.topbar nav a:focus-visible,.tree button:focus-visible,.norm-group summary:focus-visible,.related button:focus-visible{outline:3px solid #d9b454;outline-offset:3px}
.layout{display:grid;grid-template-columns:minmax(280px,350px) minmax(0,1fr);min-height:calc(100vh - 94px)}
.sidebar{position:sticky;top:94px;height:calc(100vh - 94px);overflow:auto;padding:18px;border-right:1px solid var(--line);background:#fbfaf7}
.tree{display:grid;gap:10px}
.norm-group{overflow:hidden;border:1px solid var(--line);border-radius:11px;background:#fff}
.norm-group summary{display:grid;gap:4px;padding:13px 14px;cursor:pointer;list-style:none;background:#fff;font:700 13px/1.35 Arial,sans-serif}
.norm-group summary::-webkit-details-marker{display:none}
.norm-group summary:after{content:"+";grid-column:2;grid-row:1/3;align-self:center;font-size:21px;color:var(--accent)}
.norm-group[open] summary:after{content:"−"}
.norm-group summary span{min-width:0}
.norm-group summary small{font-weight:600;color:var(--muted)}
.norm-items,.search-results{display:grid;gap:2px;padding:6px 7px 9px;border-top:1px solid var(--line)}
.tree-item,.load-more{width:100%;padding:8px 9px;border:0;border-radius:6px;background:transparent;color:var(--ink);text-align:left;cursor:pointer;font:600 12px/1.4 Arial,sans-serif}
.tree-item:hover{background:var(--soft)}
.tree-item.is-active{background:var(--accent);color:#fff}
.load-more{margin-top:6px;border:1px solid var(--accent);color:var(--accent);text-align:center;font-weight:800}
.load-more:hover{background:var(--accent);color:#fff}
.empty{padding:18px;color:var(--muted);font:600 14px/1.5 Arial,sans-serif}
.content{min-width:0;padding:clamp(24px,4.5vw,66px);outline:0}
.article-view{max-width:1040px;margin:0 auto;padding:clamp(24px,4vw,52px);border:1px solid var(--line);border-radius:18px;background:var(--panel);box-shadow:0 16px 42px #29323a12}
.article-view .norm{display:inline-flex;margin-bottom:18px;padding:7px 10px;border-radius:999px;background:color-mix(in srgb,var(--accent) 10%,#fff);color:var(--accent);font:800 11px/1.2 Arial,sans-serif;letter-spacing:.06em;text-transform:uppercase}
.article-view h1{margin:0 0 24px;color:#17212a;font-size:clamp(28px,4vw,44px);line-height:1.12}
.article-view p{margin:0;white-space:pre-line;font-size:17px;line-height:1.78;text-align:justify}
.related{margin-top:36px;padding-top:22px;border-top:1px solid var(--line)}
.related h3{margin:0 0 12px;font:800 17px/1.3 Arial,sans-serif}
.related button{display:block;width:100%;margin:7px 0;padding:12px 14px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink);text-align:left;cursor:pointer;font:700 13px/1.4 Arial,sans-serif}
.related button:hover{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 6%,#fff)}
@media(max-width:900px){.topbar{position:relative;grid-template-columns:1fr auto}.search-wrap{grid-column:1/-1;grid-row:2}.layout{display:block}.sidebar{position:relative;top:auto;height:auto;max-height:44vh;border-right:0;border-bottom:1px solid var(--line)}.content{padding:22px 16px 38px}.article-view{padding:26px 20px}.article-view p{text-align:left}}
@media(max-width:560px){.topbar{grid-template-columns:1fr;padding:15px 16px}.topbar nav{grid-row:3}.topbar nav a{width:100%}.brand strong{font-size:18px}.article-view{border-radius:13px}.article-view p{font-size:16px}.sidebar{max-height:48vh}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}