/*
Theme Name: Nano Cables
Theme URI: https://multimedia-cables.ru/
Author: Multimedia Cables
Description: Инженерная журнальная тема о мультимедийных интерфейсах и кабелях.
Version: 1.0.0
Text Domain: nano-cables
*/

:root {
  --bg: #080c0f;
  --bg-elevated: #0e151a;
  --surface: #121b21;
  --surface-2: #18242b;
  --text: #f3f7f8;
  --text-soft: #aebdc4;
  --muted: #7d9099;
  --line: #293941;
  --accent: #b9ff5a;
  --accent-2: #42dcff;
  --accent-ink: #111806;
  --danger: #ff7b7b;
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --shadow: 0 20px 60px rgba(0,0,0,.28);
  --container: 1180px;
  --reading: 780px;
  --z-base: 0;
  --z-sticky: 20;
  --z-overlay: 40;
  --z-modal: 50;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; color-scheme: dark; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 12% -10%, rgba(66,220,255,.11), transparent 28rem),
    radial-gradient(circle at 88% 18%, rgba(185,255,90,.07), transparent 32rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration-color: rgba(185,255,90,.55); text-underline-offset: .2em; }
a:hover { color: var(--accent); }
img, svg { max-width: 100%; height: auto; }
button, input { font: inherit; }
button, a { touch-action: manipulation; }
:focus-visible { outline: 3px solid var(--accent-2); outline-offset: 4px; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 100; padding: 10px 16px; transform: translateY(-160%); background: var(--accent); color: var(--accent-ink); border-radius: 8px; font-weight: 800; }
.skip-link:focus { transform: translateY(0); }
.container { width: min(calc(100% - 32px), var(--container)); margin-inline: auto; }
.reading-width { width: min(calc(100% - 32px), var(--reading)); margin-inline: auto; }
.mono, .eyebrow, .chip, .post-meta, .data-label, .toc-title, .breadcrumb, .spec-table th { font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace; }
.eyebrow { margin: 0 0 14px; color: var(--accent); font-size: .75rem; letter-spacing: .13em; text-transform: uppercase; font-weight: 700; }
.muted { color: var(--text-soft); }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }

.site-header { position: sticky; top: 0; z-index: var(--z-sticky); background: rgba(8,12,15,.9); border-bottom: 1px solid rgba(185,255,90,.13); backdrop-filter: blur(16px); }
.header-inner { min-height: 68px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-height: 48px; text-decoration: none; }
.brand-mark { position: relative; display: grid; place-items: center; width: 39px; height: 39px; border: 1px solid rgba(185,255,90,.65); border-radius: 11px; background: linear-gradient(145deg, rgba(185,255,90,.15), rgba(66,220,255,.03)); overflow: hidden; }
.brand-mark::before, .brand-mark::after { content:""; position:absolute; background:var(--accent); }
.brand-mark::before { width: 22px; height: 2px; box-shadow: 0 -7px 0 rgba(66,220,255,.8), 0 7px 0 rgba(185,255,90,.55); }
.brand-mark::after { width: 2px; height: 22px; opacity: .3; }
.brand-copy { display: grid; line-height: 1.05; }
.brand-copy strong { font-size: .92rem; letter-spacing: .01em; }
.brand-copy span { margin-top: 5px; color: var(--muted); font: 600 .62rem/1 "JetBrains Mono", Consolas, monospace; letter-spacing: .12em; text-transform: uppercase; }
.main-nav { margin-left: auto; }
.main-nav ul { display: flex; align-items: center; gap: 6px; margin: 0; padding: 0; list-style: none; }
.main-nav a { display: flex; align-items: center; min-height: 44px; padding: 8px 12px; border-radius: 9px; color: var(--text-soft); text-decoration: none; font-size: .86rem; font-weight: 700; }
.main-nav a:hover, .main-nav .current-menu-item > a { background: var(--surface); color: var(--text); }
.header-search, .menu-toggle { width: 44px; height: 44px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--text); cursor: pointer; }
.header-search:hover, .menu-toggle:hover { border-color: var(--accent); color: var(--accent); }
.menu-toggle { display: none; }

.hero { position: relative; min-height: 620px; display: grid; align-items: center; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero::before { content:""; position:absolute; inset:0; opacity:.32; background-image: linear-gradient(rgba(66,220,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(66,220,255,.08) 1px, transparent 1px); background-size: 34px 34px; mask-image: linear-gradient(to bottom, #000, transparent 88%); }
.hero::after { content:""; position:absolute; width:520px; aspect-ratio:1; right:-140px; top:40px; border:1px solid rgba(185,255,90,.22); border-radius:50%; box-shadow: 0 0 0 48px rgba(66,220,255,.025), 0 0 0 96px rgba(185,255,90,.018); }
.hero-grid { position:relative; z-index:1; display:grid; grid-template-columns: 1.15fr .85fr; gap: 70px; align-items:center; padding-block: 80px; }
.hero h1 { max-width: 830px; margin: 0; font-size: clamp(3rem, 7vw, 6.8rem); line-height: .92; letter-spacing: -.065em; font-weight: 760; }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero-lead { max-width: 690px; margin: 28px 0 0; color: var(--text-soft); font-size: clamp(1.05rem, 2vw, 1.28rem); }
.signal-panel { position:relative; min-height: 390px; padding: 28px; border:1px solid var(--line); border-radius:var(--radius-lg); background:linear-gradient(145deg, rgba(24,36,43,.95), rgba(10,15,18,.85)); box-shadow:var(--shadow); }
.signal-panel::before { content:""; position:absolute; inset:14px; border:1px dashed rgba(66,220,255,.2); border-radius:20px; pointer-events:none; }
.signal-head { display:flex; justify-content:space-between; gap:16px; color:var(--muted); font:.72rem/1.3 "JetBrains Mono", Consolas, monospace; text-transform:uppercase; letter-spacing:.08em; }
.signal-line { position:relative; height:170px; margin:40px 0 20px; }
.signal-line svg { width:100%; height:100%; overflow:visible; }
.signal-line path { fill:none; stroke:var(--accent); stroke-width:3; filter:drop-shadow(0 0 8px rgba(185,255,90,.45)); }
.signal-line circle { fill:var(--bg); stroke:var(--accent-2); stroke-width:2; }
.signal-stats { display:grid; grid-template-columns:repeat(3,1fr); gap:10px; }
.signal-stat { padding:15px; border:1px solid var(--line); border-radius:12px; background:rgba(8,12,15,.65); }
.signal-stat strong { display:block; font-size:1.25rem; line-height:1.1; color:var(--accent); }
.signal-stat span { display:block; margin-top:7px; color:var(--muted); font-size:.7rem; }

.section { padding-block: 88px; }
.section-tight { padding-block: 54px; }
.section-head { display:flex; justify-content:space-between; align-items:end; gap:30px; margin-bottom:32px; }
.section-title { max-width:760px; margin:0; font-size:clamp(2rem,5vw,3.7rem); line-height:1.04; letter-spacing:-.045em; }
.section-head p { max-width:480px; margin:0; color:var(--text-soft); }
.topic-grid { display:grid; grid-template-columns:repeat(5,1fr); gap:12px; }
.topic-card { position:relative; min-height:170px; padding:20px; border:1px solid var(--line); border-radius:var(--radius); background:var(--bg-elevated); text-decoration:none; overflow:hidden; transition:border-color .2s ease, background .2s ease; }
.topic-card:hover { border-color:var(--accent); background:var(--surface); color:var(--text); }
.topic-card::after { content:""; position:absolute; width:90px; height:90px; right:-30px; bottom:-30px; border:1px solid currentColor; border-radius:50%; opacity:.08; }
.topic-card span { color:var(--accent); font:.68rem/1.2 "JetBrains Mono", Consolas, monospace; }
.topic-card strong { display:block; margin-top:42px; font-size:1.02rem; line-height:1.25; }
.posts-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.post-card { display:flex; min-height:100%; flex-direction:column; border:1px solid var(--line); border-radius:var(--radius); background:var(--bg-elevated); overflow:hidden; transition:transform .2s ease, border-color .2s ease; }
.post-card:hover { transform:translateY(-3px); border-color:rgba(185,255,90,.75); }
.post-visual { position:relative; min-height:210px; padding:20px; background:linear-gradient(135deg,#14242b,#0b1115); overflow:hidden; }
.post-visual::before { content:""; position:absolute; inset:0; opacity:.46; background-image:linear-gradient(rgba(66,220,255,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(66,220,255,.12) 1px,transparent 1px); background-size:22px 22px; }
.post-visual::after { content:""; position:absolute; width:190px; height:72px; right:-28px; bottom:30px; border:3px solid var(--accent); border-radius:50%; box-shadow:0 0 0 12px rgba(185,255,90,.04), 0 0 28px rgba(185,255,90,.18); transform:rotate(-18deg); }
.post-visual.dp::after { border-radius:8px; transform:rotate(8deg); border-color:var(--accent-2); }
.post-visual.usb::after { width:110px; height:110px; border-radius:22px; transform:rotate(45deg); }
.post-visual.audio::after { border-radius:50%; width:130px; height:130px; }
.post-visual.install::after { width:230px; height:3px; border:0; background:var(--accent); box-shadow:0 18px 0 var(--accent-2),0 36px 0 rgba(185,255,90,.45); }
.post-visual .visual-code { position:relative; z-index:1; color:var(--accent); font:.72rem/1.4 "JetBrains Mono", Consolas, monospace; letter-spacing:.08em; }
.post-card-body { display:flex; flex:1; flex-direction:column; padding:22px; }
.chip { display:inline-flex; align-items:center; width:max-content; min-height:30px; padding:5px 9px; border:1px solid rgba(66,220,255,.35); border-radius:99px; color:var(--accent-2); font-size:.64rem; text-transform:uppercase; letter-spacing:.06em; }
.post-card h2, .post-card h3 { margin:16px 0 10px; font-size:1.35rem; line-height:1.22; letter-spacing:-.025em; }
.post-card h2 a, .post-card h3 a { text-decoration:none; }
.post-card p { margin:0; color:var(--text-soft); font-size:.92rem; }
.post-meta { display:flex; flex-wrap:wrap; gap:12px; margin-top:auto; padding-top:22px; color:var(--muted); font-size:.68rem; }
.featured-layout { display:grid; grid-template-columns:1.25fr .75fr; gap:18px; }
.featured-layout .post-card:first-child { grid-row:span 2; }
.featured-layout .post-card:first-child .post-visual { min-height:330px; }
.featured-layout .post-card:first-child h2 { font-size:clamp(1.8rem,3.2vw,3rem); }

.matrix-shell { border:1px solid var(--line); border-radius:var(--radius-lg); background:var(--bg-elevated); overflow:hidden; }
.matrix-intro { display:grid; grid-template-columns:1fr 1fr; gap:32px; padding:32px; border-bottom:1px solid var(--line); }
.matrix-intro h2 { margin:0; font-size:clamp(1.8rem,4vw,3rem); line-height:1.08; }
.matrix-intro p { margin:0; color:var(--text-soft); }
.table-scroll { width:100%; overflow-x:auto; overscroll-behavior-inline:contain; }
.spec-table { width:100%; border-collapse:collapse; min-width:700px; font-variant-numeric:tabular-nums; }
.spec-table th, .spec-table td { padding:16px 18px; text-align:left; border-bottom:1px solid var(--line); vertical-align:top; }
.spec-table th { color:var(--muted); font-size:.68rem; letter-spacing:.07em; text-transform:uppercase; background:rgba(8,12,15,.7); }
.spec-table td:first-child { color:var(--text); font-weight:750; }
.spec-table tr:last-child td { border-bottom:0; }
.spec-table tbody tr:hover { background:rgba(185,255,90,.035); }

.archive-hero, .article-hero { border-bottom:1px solid var(--line); background:linear-gradient(180deg,rgba(18,27,33,.9),rgba(8,12,15,.3)); }
.archive-hero { padding-block:68px; }
.archive-hero h1 { margin:0; font-size:clamp(2.5rem,6vw,5.2rem); line-height:1; letter-spacing:-.05em; }
.archive-hero p { max-width:720px; margin:22px 0 0; color:var(--text-soft); }
.article-hero { position:relative; padding-block:72px 54px; overflow:hidden; }
.article-hero::after { content:""; position:absolute; inset:auto -120px -190px auto; width:440px; aspect-ratio:1; border:1px solid rgba(66,220,255,.18); border-radius:50%; box-shadow:0 0 0 48px rgba(185,255,90,.02); }
.breadcrumb { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:30px; color:var(--muted); font-size:.7rem; }
.breadcrumb a { color:var(--text-soft); }
.article-hero h1 { position:relative; z-index:1; max-width:990px; margin:0; font-size:clamp(2.45rem,6vw,5.6rem); line-height:.98; letter-spacing:-.055em; }
.article-deck { max-width:800px; margin:26px 0 0; color:var(--text-soft); font-size:clamp(1.05rem,2vw,1.3rem); }
.article-meta { display:flex; flex-wrap:wrap; gap:16px; margin-top:30px; color:var(--muted); font:.72rem/1.5 "JetBrains Mono", Consolas, monospace; }
.reading-progress { position:fixed; top:0; left:0; z-index:60; width:100%; height:3px; transform:scaleX(0); transform-origin:left; background:linear-gradient(90deg,var(--accent),var(--accent-2)); }
.article-layout { display:grid; grid-template-columns:minmax(0,var(--reading)) 280px; justify-content:center; gap:64px; padding-block:64px 100px; }
.article-content { min-width:0; }
.article-content > p:first-of-type { font-size:1.18rem; color:var(--text); }
.article-content p { margin:0 0 1.35em; }
.article-content h2 { margin:2.15em 0 .75em; font-size:clamp(1.75rem,4vw,2.65rem); line-height:1.1; letter-spacing:-.04em; scroll-margin-top:100px; }
.article-content h3 { margin:1.8em 0 .6em; font-size:1.35rem; line-height:1.25; }
.article-content ul, .article-content ol { margin:0 0 1.6em; padding-left:1.25em; }
.article-content li { margin:.5em 0; padding-left:.3em; }
.article-content strong { color:#fff; }
.article-content a { color:var(--accent-2); }
.article-content blockquote { margin:34px 0; padding:24px 28px; border-left:3px solid var(--accent); border-radius:0 var(--radius) var(--radius) 0; background:var(--surface); color:var(--text-soft); }
.article-content .table-scroll { margin:28px 0 40px; border:1px solid var(--line); border-radius:var(--radius); }
.article-content .spec-table { font-size:.9rem; }
.article-content .spec-table td { min-width:150px; }
.toc { position:sticky; top:92px; align-self:start; padding:20px; border:1px solid var(--line); border-radius:var(--radius); background:var(--bg-elevated); }
.toc-title { display:block; margin-bottom:14px; color:var(--accent); font-size:.68rem; letter-spacing:.1em; text-transform:uppercase; }
.toc ol { margin:0; padding-left:18px; color:var(--muted); font-size:.83rem; line-height:1.45; }
.toc li + li { margin-top:10px; }
.toc a { color:var(--text-soft); text-decoration:none; }
.toc a:hover { color:var(--accent); }
.key-points { margin:30px 0 42px; padding:26px; border:1px solid rgba(185,255,90,.3); border-radius:var(--radius); background:linear-gradient(135deg,rgba(185,255,90,.07),rgba(66,220,255,.03)); }
.key-points h2, .key-points h3 { margin:0 0 14px; font-size:1.12rem; letter-spacing:-.015em; }
.key-points ul { margin:0; }
.nano-infographic { position:relative; margin:38px 0 46px; padding:28px; border:1px solid var(--line); border-radius:var(--radius-lg); background:linear-gradient(145deg,#101a20,#0a1014); overflow:hidden; }
.nano-infographic::before { content:""; position:absolute; inset:0; opacity:.35; background-image:linear-gradient(rgba(66,220,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(66,220,255,.09) 1px,transparent 1px); background-size:24px 24px; mask-image:linear-gradient(to bottom,#000,transparent); }
.nano-infographic > * { position:relative; z-index:1; }
.nano-infographic h3 { margin:0 0 22px; font-size:1.1rem; }
.nano-flow { display:grid; grid-template-columns:repeat(var(--cols,4),1fr); gap:12px; }
.nano-node { position:relative; min-height:118px; padding:16px; border:1px solid rgba(66,220,255,.28); border-radius:13px; background:rgba(8,12,15,.82); }
.nano-node:not(:last-child)::after { content:""; position:absolute; top:50%; right:-13px; width:13px; height:1px; background:var(--accent); }
.nano-node b { display:block; color:var(--accent); font:700 .72rem/1.2 "JetBrains Mono",Consolas,monospace; }
.nano-node span { display:block; margin-top:9px; color:var(--text-soft); font-size:.82rem; line-height:1.35; }
.infographic-note { margin:18px 0 0 !important; color:var(--muted); font-size:.78rem; }
.sources { margin-top:54px; padding-top:28px; border-top:1px solid var(--line); }
.sources h2 { margin-top:0; font-size:1.25rem; }
.sources ol { color:var(--text-soft); font-size:.86rem; }
.editorial-note { margin-top:34px; padding:20px; border:1px solid var(--line); border-radius:var(--radius); color:var(--muted); font-size:.82rem; }

.site-footer { border-top:1px solid var(--line); background:#06090b; }
.footer-grid { display:grid; grid-template-columns:1.15fr .85fr .85fr; gap:60px; padding-block:64px 44px; }
.footer-grid h2, .footer-grid h3 { margin:0 0 18px; font-size:.82rem; text-transform:uppercase; letter-spacing:.08em; }
.footer-grid p { max-width:480px; color:var(--text-soft); font-size:.9rem; }
.footer-links { margin:0; padding:0; list-style:none; }
.footer-links li + li { margin-top:9px; }
.footer-links a { color:var(--text-soft); font-size:.88rem; }
.footer-bottom { display:flex; justify-content:space-between; gap:20px; padding-block:22px; border-top:1px solid var(--line); color:var(--muted); font-size:.76rem; }

.search-dialog { width:min(680px,calc(100% - 24px)); padding:0; border:1px solid var(--line); border-radius:var(--radius); background:var(--surface); color:var(--text); box-shadow:var(--shadow); }
.search-dialog::backdrop { background:rgba(0,0,0,.72); backdrop-filter:blur(7px); }
.search-dialog form { display:flex; gap:10px; padding:22px; }
.search-dialog input { flex:1; min-width:0; min-height:50px; padding:12px 14px; border:1px solid var(--line); border-radius:10px; background:var(--bg); color:var(--text); }
.button { min-height:48px; display:inline-flex; align-items:center; justify-content:center; padding:10px 18px; border:1px solid var(--accent); border-radius:10px; background:var(--accent); color:var(--accent-ink); text-decoration:none; font-weight:800; cursor:pointer; }
.button:hover { background:#d1ff91; color:var(--accent-ink); }
.dialog-close { position:absolute; top:12px; right:12px; width:44px; height:44px; border:0; border-radius:50%; background:var(--surface-2); color:var(--text); cursor:pointer; }
.pagination { display:flex; justify-content:center; gap:8px; margin-top:44px; }
.pagination .page-numbers { min-width:44px; height:44px; display:grid; place-items:center; border:1px solid var(--line); border-radius:9px; text-decoration:none; }
.pagination .current { background:var(--accent); color:var(--accent-ink); border-color:var(--accent); }
.empty-state { padding:60px; border:1px solid var(--line); border-radius:var(--radius-lg); text-align:center; background:var(--bg-elevated); }

@media (max-width: 980px) {
  .main-nav { position:fixed; top:69px; left:0; right:0; display:none; padding:14px 16px 22px; background:rgba(8,12,15,.98); border-bottom:1px solid var(--line); }
  .main-nav.is-open { display:block; }
  .main-nav ul { align-items:stretch; flex-direction:column; }
  .main-nav a { font-size:1rem; }
  .menu-toggle { display:grid; margin-left:auto; }
  .header-search { margin-left:0; }
  .hero { min-height:auto; }
  .hero-grid { grid-template-columns:1fr; gap:42px; padding-block:64px; }
  .signal-panel { min-height:340px; }
  .topic-grid { grid-template-columns:repeat(2,1fr); }
  .posts-grid { grid-template-columns:repeat(2,1fr); }
  .article-layout { grid-template-columns:minmax(0,var(--reading)); }
  .toc { position:static; grid-row:1; margin-bottom:-26px; }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .footer-grid > :first-child { grid-column:1/-1; }
}

@media (max-width: 680px) {
  body { font-size:16px; }
  .container, .reading-width { width:min(calc(100% - 24px),var(--container)); }
  .brand-copy span { display:none; }
  .header-inner { gap:9px; }
  .hero-grid { padding-block:52px; }
  .hero h1 { font-size:clamp(3rem,16vw,4.7rem); }
  .signal-panel { min-height:auto; padding:22px; }
  .signal-line { height:120px; margin-block:30px 14px; }
  .signal-stats { grid-template-columns:1fr; }
  .section { padding-block:64px; }
  .section-head { align-items:start; flex-direction:column; gap:14px; }
  .topic-grid, .posts-grid, .featured-layout { grid-template-columns:1fr; }
  .featured-layout .post-card:first-child { grid-row:auto; }
  .featured-layout .post-card:first-child .post-visual { min-height:230px; }
  .matrix-intro { grid-template-columns:1fr; padding:24px; }
  .archive-hero { padding-block:50px; }
  .article-hero { padding-block:48px 38px; }
  .article-layout { gap:42px; padding-block:42px 72px; }
  .article-content h2 { scroll-margin-top:82px; }
  .nano-infographic { margin-inline:-4px; padding:20px; }
  .nano-flow { grid-template-columns:1fr; }
  .nano-node:not(:last-child)::after { top:auto; right:auto; left:26px; bottom:-13px; width:1px; height:13px; }
  .footer-grid { grid-template-columns:1fr; gap:34px; }
  .footer-grid > :first-child { grid-column:auto; }
  .footer-bottom { flex-direction:column; }
  .search-dialog form { flex-direction:column; padding-top:64px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior:auto; }
  *, *::before, *::after { animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
  .post-card:hover { transform:none; }
}