:root{--ink:#0d1b2a;--ink2:#415366;--mute:#6b7a8c;--bg:#f6f8fa;--card:#fff;--line:#e2e8ee;--acc:#01a982;--acc-d:#007a5d;--navy:#0d1b2a;--r:14px}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:Inter,system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4,.brand{font-family:'Bricolage Grotesque',Inter,sans-serif;letter-spacing:-.02em;line-height:1.15}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--acc);z-index:100}

/* header */
.site-header{background:var(--navy);position:sticky;top:0;z-index:50}
.bar{display:flex;align-items:center;justify-content:space-between;height:64px;gap:20px}
.brand{font-weight:800;font-size:22px;color:#fff;display:flex;align-items:center;gap:9px}
.brand .dot{width:12px;height:12px;border-radius:3px;background:var(--acc);display:inline-block}
.nav{display:flex;gap:4px;flex-wrap:wrap}
.nav a{color:#c5d0dc;font-size:14.5px;font-weight:500;padding:8px 13px;border-radius:8px;transition:.15s}
.nav a:hover,.nav a.on{background:rgba(255,255,255,.1);color:#fff}
.burger{display:none;background:none;border:0;color:#fff;font-size:26px;cursor:pointer}

/* hero */
.hero{background:var(--navy);color:#fff;padding:54px 0 64px;background-image:radial-gradient(900px 300px at 85% -10%,rgba(1,169,130,.35),transparent)}
.hero h1{font-size:clamp(32px,5vw,54px);font-weight:800;max-width:760px}
.lead{color:#b9c6d4;font-size:18px;max-width:640px;margin-top:16px}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.chip{border:1px solid rgba(255,255,255,.25);padding:8px 18px;border-radius:99px;font-size:14.5px;font-weight:500;transition:.15s}
.chip:hover{background:var(--acc);border-color:var(--acc)}

/* cards */
.tag{display:inline-block;font-size:13px;font-weight:600;color:var(--acc-d);margin-bottom:8px}
.tag:hover{text-decoration:underline}
.meta{font-size:13px;color:var(--mute)}
.top-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:28px;margin-top:-34px;position:relative}
.feature{background:var(--card);border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:0 10px 30px rgba(13,27,42,.08)}
.feature-img{display:block;aspect-ratio:16/8;overflow:hidden}
.feature-img img,.feature-img .ph{width:100%;height:100%;object-fit:cover}
.feature-body{padding:24px 26px 28px}
.feature h2{font-size:30px;margin-bottom:10px}
.feature p{color:var(--ink2);margin-bottom:12px}
.latest{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;align-self:start;box-shadow:0 10px 30px rgba(13,27,42,.06)}
.latest h3{font-size:18px;margin-bottom:6px}
.mini{display:block;padding:14px 0;border-top:1px solid var(--line)}
.mini:first-of-type{border-top:0}
.mini strong{display:block;font-size:16px;line-height:1.35;margin:3px 0;font-family:'Bricolage Grotesque',sans-serif}
.mini:hover strong{color:var(--acc-d)}
.mini-cat{font-size:12.5px;font-weight:600;color:var(--acc-d)}
.block{padding-top:56px}
.block-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:22px;border-bottom:2px solid var(--ink);padding-bottom:12px}
.block-head h2{font-size:28px}
.block-head p{color:var(--mute);font-size:14.5px;margin-top:4px}
.more{font-weight:600;font-size:14px;color:var(--acc-d)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 28px rgba(13,27,42,.1)}
.card-img{aspect-ratio:16/10;overflow:hidden;display:block}
.card-img img,.card-img .ph{width:100%;height:100%;object-fit:cover}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.card h3{font-size:19px;margin-bottom:8px}
.card h3 a:hover{color:var(--acc-d)}
.card p{color:var(--ink2);font-size:14.5px;margin-bottom:12px;flex:1}
.ph{display:grid;place-items:center;background:linear-gradient(135deg,#0d1b2a,#16405a)}
.ph span{font-family:'Bricolage Grotesque',sans-serif;font-weight:800;font-size:64px;color:rgba(255,255,255,.9)}
.ph-ai{background:linear-gradient(135deg,#0d1b2a,#01a982)}
.ph-cars{background:linear-gradient(135deg,#1b2a41,#c0392b)}
.ph-bikes{background:linear-gradient(135deg,#1a1a2e,#e08e0b)}
.ph-ev{background:linear-gradient(135deg,#0d1b2a,#2a7fd4)}
.empty{padding:70px 20px;text-align:center;color:var(--mute)}
.cat-head{background:var(--navy);color:#fff;padding:40px 0 46px}
.cat-head h1{font-size:clamp(30px,4vw,44px)}
.crumbs{font-size:13.5px;color:var(--mute)}
.crumbs a:hover{color:var(--acc-d);text-decoration:underline}
.cat-head .crumbs{color:#9fb0c1;margin-bottom:10px}
.crumbs-row{padding-top:22px}

/* article + TOC (left) */
.article-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:56px;padding-top:20px;padding-bottom:20px;align-items:start}
.toc{position:sticky;top:84px;max-height:calc(100vh - 100px);overflow:auto}
.toc summary{font-family:'Bricolage Grotesque',sans-serif;font-weight:700;font-size:15px;margin-bottom:12px;cursor:pointer;list-style:none}
.toc summary::-webkit-details-marker{display:none}
.toc ul{list-style:none;padding:0;border-left:2px solid var(--line)}
.toc li a{display:block;padding:9px 14px;margin-left:-2px;border-left:3px solid transparent;font-size:14.5px;color:var(--ink2);line-height:1.35;transition:.15s}
.toc li.sub a{padding-left:28px;font-size:13.5px}
.toc li a:hover{background:#eaf1f5;color:var(--ink)}
.toc li a.active{border-left-color:var(--acc);background:#e3f4ef;color:var(--ink);font-weight:600}
.article{max-width:760px;padding-bottom:20px}
.article.no-toc{margin:0 auto}
.article h1{font-size:clamp(30px,4.2vw,44px);margin:6px 0 12px}
.cover{width:100%;border-radius:var(--r);margin:24px 0 8px;aspect-ratio:16/8;object-fit:cover}
.prose{font-family:'Source Serif 4',Georgia,serif;font-size:19px;line-height:1.8;color:#1b2836;margin-top:22px}
.prose h2{font-family:'Bricolage Grotesque',sans-serif;font-size:29px;margin:44px 0 12px;color:var(--ink)}
.prose h3{font-family:'Bricolage Grotesque',sans-serif;font-size:22px;margin:30px 0 8px}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:26px}
.prose li{margin-bottom:6px}
.prose a{color:var(--acc-d);text-decoration:underline}
.prose img{border-radius:12px;margin:24px auto}
.prose blockquote{border-left:4px solid var(--acc);padding:6px 20px;margin:24px 0;color:var(--ink2);font-style:italic;background:#eef6f3;border-radius:0 10px 10px 0}
.narrow{max-width:800px}

/* footer */
.site-footer{background:var(--navy);color:#b9c6d4;margin-top:80px;padding-top:48px}
.foot{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:30px}
.foot h4{color:#fff;margin-bottom:12px;font-size:16px}
.foot a{display:block;padding:3px 0;font-size:14.5px}
.foot a:hover{color:#fff}
.foot .brand{display:inline-flex;margin-bottom:10px}
.copy{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:18px;padding-bottom:22px;font-size:13px}

/* admin */
body.admin{background:#eef2f6}
.ad-top{background:var(--navy);display:flex;justify-content:space-between;align-items:center;padding:0 24px;height:60px;flex-wrap:wrap}
.ad-top nav a{color:#c5d0dc;font-size:14px;padding:8px 12px;border-radius:8px}
.ad-top nav a:hover{background:rgba(255,255,255,.1);color:#fff}
.ad-wrap{max-width:1150px;margin:28px auto;padding:0 20px 60px}
.ad-wrap h1{font-size:28px;margin-bottom:18px}
.ad-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.btn{display:inline-block;background:var(--acc);color:#fff;border:0;padding:11px 20px;border-radius:10px;font:600 15px Inter,sans-serif;cursor:pointer}
.btn:hover{background:var(--acc-d)}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line);width:100%;margin-bottom:10px}
.btn.big{width:100%;padding:14px;font-size:16px;margin-top:6px}
.ad-table{width:100%;background:#fff;border-collapse:collapse;border-radius:12px;overflow:hidden;border:1px solid var(--line);margin-bottom:26px}
.ad-table th,.ad-table td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px}
.ad-table th{background:#f6f8fa;font-size:13px;color:var(--mute)}
.acts{display:flex;gap:14px;align-items:center}
.acts a{color:var(--acc-d);font-weight:500}
.acts form{display:inline}
.link{background:none;border:0;cursor:pointer;font:500 14.5px Inter,sans-serif}
.bad{color:#c0392b}
.pill{background:#e6e9ee;padding:3px 10px;border-radius:99px;font-size:12.5px;font-weight:600}
.pill.live{background:#d8f3ea;color:var(--acc-d)}
.alert{padding:12px 16px;border-radius:10px;margin-bottom:16px;font-size:14.5px}
.alert.ok{background:#d8f3ea;color:#065f46}
.alert.bad{background:#fde8e6;color:#9b2c20}
.ad-form label{display:block;font-size:13.5px;font-weight:600;margin-bottom:16px;color:var(--ink2)}
.ad-form input:not([type=checkbox]),.ad-form textarea,.ad-form select,.login-box input{display:block;width:100%;margin-top:6px;padding:11px 13px;border:1px solid #cfd8e1;border-radius:9px;font:15px Inter,sans-serif;background:#fff}
.ad-form input:focus,.ad-form textarea:focus,.ad-form select:focus,.login-box input:focus{outline:2px solid var(--acc);border-color:var(--acc)}
.cols{display:grid;grid-template-columns:1fr 310px;gap:26px;align-items:start}
.side{background:#fff;padding:20px;border-radius:12px;border:1px solid var(--line);position:sticky;top:16px}
.side .check{display:flex;gap:8px;align-items:center}
.prev{border-radius:10px;margin-bottom:16px;max-height:160px;width:100%;object-fit:cover}
.tip{background:#fff7e0;border:1px solid #f1dd9b;padding:10px 14px;border-radius:9px;font-size:13.5px;margin-bottom:10px}
.narrow-form{background:#fff;padding:24px;border-radius:12px;max-width:520px;border:1px solid var(--line)}
.narrow-form h2{font-size:20px;margin-bottom:14px}
#editor{height:480px;background:#fff;font-size:16px}
#toolbar{background:#fff}
.txtbtn{width:auto!important;font-size:12.5px;font-weight:600;color:var(--acc-d)}
.login{display:grid;place-items:center;min-height:100vh}
.login-box{background:#fff;padding:34px;border-radius:16px;width:min(380px,92vw);border:1px solid var(--line);box-shadow:0 14px 40px rgba(13,27,42,.1)}
.login-box .brand{color:var(--ink);margin-bottom:14px}
.login-box h1{font-size:24px;margin-bottom:16px}
.login-box label{display:block;font-size:13.5px;font-weight:600;margin-bottom:14px}
.login-box .btn{width:100%}

@media(max-width:900px){
 .top-grid{grid-template-columns:1fr;margin-top:-24px}
 .grid{grid-template-columns:1fr 1fr}
 .article-layout{grid-template-columns:1fr;gap:10px}
 .toc{position:static;max-height:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
 .toc details:not([open]) ul{display:none}
 .cols{grid-template-columns:1fr}
 .side{position:static}
}
@media(max-width:640px){
 .burger{display:block}
 .nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--navy);padding:10px 20px 18px;flex-direction:column}
 .nav.open{display:flex}
 .grid{grid-template-columns:1fr}
 .foot{grid-template-columns:1fr}
 .prose{font-size:18px}
 .feature h2{font-size:24px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.card{transition:none}}