:root{--link:#3b83f7;--link-hover:#1a3d7a;--text:#222;--muted:#6b7280;--line:#e8eaee;--bg:#fff;--soft:#f6f8fb}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:400 17px/1.7 Roboto,Arial,sans-serif;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--link);text-decoration:none;transition:color .15s}
a:hover,a:focus-visible{color:var(--link-hover)}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
.header .wrap{display:flex;align-items:center;justify-content:space-between;min-height:64px}
.logo{font-weight:700;font-size:20px;color:var(--text);letter-spacing:-.01em}
.logo span{color:var(--link)}
.logo:hover{color:var(--text)}
.nav{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.nav>li{position:relative}
.nav>li>a{display:block;padding:20px 12px;font-size:15px;font-weight:500}
.nav>li.active>a{color:var(--link-hover)}
.sub{display:none;position:absolute;left:0;top:100%;min-width:230px;margin:0;padding:8px 0;list-style:none;background:#fff;border:1px solid var(--line);border-radius:0 0 8px 8px;box-shadow:0 8px 24px rgba(20,30,50,.08)}
.nav>li:hover>.sub,.nav>li:focus-within>.sub{display:block}
.sub a{display:block;padding:7px 18px;font-size:15px}
.sub li.active a{color:var(--link-hover);font-weight:500}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer}
.burger span{display:block;width:24px;height:2px;background:var(--text);margin:5px 0}
main{padding:48px 0 72px;min-height:60vh}
.content{max-width:780px}
h1{font-size:34px;line-height:1.25;font-weight:700;margin:0 0 24px;letter-spacing:-.01em}
h2{font-size:26px;line-height:1.3;margin:40px 0 14px}
h3{font-size:20px;margin:28px 0 10px}
p,ul,ol{margin:0 0 18px}
img{max-width:100%;height:auto}
pre,code{font-family:"Roboto Mono",Consolas,monospace}
pre{background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:16px;overflow-x:auto;font-size:14.5px;line-height:1.6}
code{background:var(--soft);padding:1px 5px;border-radius:4px;font-size:.92em}
pre code{background:none;padding:0}
table{border-collapse:collapse;width:100%;margin-bottom:18px}
th,td{border:1px solid var(--line);padding:8px 12px;text-align:left}
.footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:14px}
@media(max-width:860px){
 .burger{display:block}
 .nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 20px 16px}
 .nav.open{display:flex}
 .nav>li>a{padding:10px 0}
 .sub{display:block;position:static;border:0;box-shadow:none;padding:0 0 4px 14px;min-width:0}
 h1{font-size:28px}
}
img{border-radius:6px}
.note{background:#eef8ec;border-left:3px solid #6cc36a;padding:12px 16px;border-radius:0 6px 6px 0}
.toc{background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:16px 22px;margin:0 0 24px;font-size:16px}
.toc ul{margin:6px 0 0;padding-left:20px}
.toc>ul{padding-left:0;list-style:none;margin:8px 0 0}
.toc>ul>li{margin:3px 0}
html{scroll-padding-top:80px}
.bad,.good{margin-bottom:8px}
.bad{color:#d33}
.good{color:#1f9d55}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin:0 0 28px}
.gallery a{display:block;border:1px solid var(--line);border-radius:8px;overflow:hidden;line-height:0}
.gallery img{width:100%;aspect-ratio:8/5;object-fit:cover;border-radius:0;transition:transform .25s}
.gallery a:hover img{transform:scale(1.04)}
.zoomable{cursor:zoom-in}
.btn{display:inline-block;background:var(--link);color:#fff;padding:11px 24px;border-radius:6px;font-weight:500;transition:background .15s}
.btn:hover,.btn:focus-visible{background:var(--link-hover);color:#fff}
.lb{position:fixed;inset:0;z-index:100;background:rgba(15,20,30,.88);display:flex;align-items:center;justify-content:center;padding:24px}
.lb[hidden]{display:none}
.lb img{max-width:100%;max-height:100%;border-radius:4px;cursor:default;box-shadow:0 10px 40px rgba(0,0,0,.4)}
.lb button{position:absolute;background:rgba(255,255,255,.12);color:#fff;border:0;cursor:pointer;border-radius:50%;width:44px;height:44px;font-size:22px;line-height:1}
.lb button:hover{background:rgba(255,255,255,.28)}
.lb-x{top:16px;right:16px;font-size:28px!important}
.lb-p{left:16px}
.lb-n{right:16px}
.lb.single .lb-p,.lb.single .lb-n{display:none}
.logo{display:flex;align-items:center;gap:10px}
.logo img{display:block;width:40px;height:40px;border-radius:0}
.note.warn{background:#fdeeee;border-left-color:#e57373}
.video{position:relative;aspect-ratio:16/9;margin:0 0 24px;border-radius:8px;overflow:hidden;background:#000}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
blockquote{margin:0 0 18px;padding:4px 0 4px 20px;border-left:3px solid var(--line);color:#444}
blockquote p:last-child{margin-bottom:0}
.bio{display:flex;gap:18px;align-items:center;margin:48px 0 0;padding:20px 22px;background:var(--soft);border:1px solid var(--line);border-radius:10px}
.bio-photo{flex:none;width:72px;height:72px;border-radius:50%;object-fit:cover;object-position:20% 25%}
.bio-initials{display:flex;align-items:center;justify-content:center;background:var(--link);color:#fff;font-weight:700;font-size:24px}
.bio-name{display:block;font-size:18px;margin-bottom:4px}
.bio-text p{margin:0;font-size:15px;line-height:1.55;color:#444}
@media(max-width:560px){.bio{flex-direction:column;align-items:flex-start}}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:48px;align-items:start}
.sidebar{align-self:stretch}
.side-card{position:sticky;top:96px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 6px 20px rgba(20,30,50,.05)}
.side-photo{float:left;width:48px;height:48px;border-radius:50%;object-fit:cover;object-position:20% 25%;margin:2px 12px 4px 0;shape-outside:circle(50%)}
.side-top{margin:0 0 12px}
.side-top::after{content:"";display:block;clear:both}
.side-text{margin:0;font-size:14px;line-height:1.5;font-weight:500}
.btn.side-btn,.btn.side-btn:hover{display:flex;align-items:center;justify-content:center;gap:7px;width:100%;padding:8px 14px;font-size:14px;color:#fff;background-image:linear-gradient(110deg,#3b83f7,#7a5cf5,#22b8cf,#3b83f7);background-size:300% 100%;animation:shimmer 5s linear infinite}
.btn.side-btn:hover{filter:brightness(.9)}
.side-close{display:none}
@keyframes shimmer{from{background-position:0 0}to{background-position:-300% 0}}
@media(prefers-reduced-motion:reduce){.btn.side-btn{animation:none}}
@media(max-width:900px){
 .layout{grid-template-columns:minmax(0,1fr)}
 .sidebar{position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));z-index:50;max-width:420px;margin:0 auto;transform:translateY(160%);opacity:0;visibility:hidden;transition:transform .35s ease,opacity .35s ease,visibility .35s}
 .sidebar.show{transform:none;opacity:1;visibility:visible}
 .side-card{position:relative;top:auto;padding:16px 36px 16px 16px;box-shadow:0 10px 30px rgba(20,30,50,.22)}
 .side-close{display:block;position:absolute;top:6px;right:8px;width:28px;height:28px;border:0;background:none;color:var(--muted);font-size:22px;line-height:1;cursor:pointer}
 .side-close:hover{color:var(--text)}
}
.about-photo{float:left;width:180px;height:180px;object-fit:cover;object-position:20% 25%;border-radius:12px;margin:4px 28px 14px 0}
@media(max-width:560px){.about-photo{float:none;display:block;width:140px;height:140px;margin:0 0 18px}}
.footer .wrap{display:flex;flex-wrap:wrap;gap:8px 28px;justify-content:space-between;align-items:center}
.footer-nav{display:flex;flex-wrap:wrap;gap:8px 20px}