/* Portfelix — общий стиль страниц базы знаний / SEO-кластера.
   Тёмная бренд-палитра лендинга. Отдаётся с /kb-style.css (whitelist в Caddy). */
:root{
  --bg:#0e1116; --bg-2:#151a21; --panel:#161c24; --line:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.16); --text:#e8ecf1; --muted:#c7cdd6; --muted-2:#8b93a1;
  --blue:#2f80ed; --blue-2:#5aa2ff; --blue-deep:#1b4fa0;
  --green:#3fbf8f; --amber:#e0a83a; --orange:#e07b3a; --red:#e2566a;
  --maxw:1180px; --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:'Manrope',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--blue-2);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#fff}
.mono{font-family:'JetBrains Mono',ui-monospace,monospace}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* header */
header.kb{position:sticky;top:0;z-index:20;background:rgba(14,17,22,.82);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header.kb .bar{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:17px}
.brand .mark{width:30px;height:30px;border-radius:7px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--blue),var(--blue-deep));box-shadow:0 6px 18px -6px rgba(47,128,237,.7);flex-shrink:0}
.brand small{display:block;font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2);margin-top:1px}
.hdr-cta{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14px;padding:10px 18px;
  border-radius:8px;background:var(--blue);color:#fff}
.hdr-cta:hover{background:var(--blue-2);color:#fff}

/* breadcrumb */
.crumbs{padding:22px 0 0;font-size:13px;color:var(--muted-2)}
.crumbs a{color:var(--muted-2)}
.crumbs a:hover{color:var(--blue-2)}
.crumbs span{margin:0 8px;opacity:.5}

/* article */
main.article{padding:14px 0 40px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:'JetBrains Mono',monospace;font-size:12px;
  letter-spacing:.2em;text-transform:uppercase;color:var(--blue-2);font-weight:500;margin:26px 0 16px}
.eyebrow::before{content:"";width:30px;height:2px;background:var(--blue);border-radius:2px}
.article h1{font-size:clamp(1.9rem,4vw,3rem);line-height:1.1;letter-spacing:-.02em;margin:0 0 20px;max-width:20ch}
.article .lead{font-size:clamp(1.08rem,1.5vw,1.28rem);color:var(--muted);max-width:70ch;margin:0 0 14px}
.article h2{font-size:clamp(1.4rem,2.4vw,1.85rem);letter-spacing:-.01em;margin:52px 0 16px;max-width:34ch}
.article h3{font-size:1.15rem;margin:30px 0 10px}
.article p{max-width:74ch;margin:0 0 16px;color:#d7dce3}
.article ul,.article ol{max-width:74ch;margin:0 0 18px;padding-left:0;list-style:none}
.article ul li{position:relative;padding:6px 0 6px 30px;color:#d7dce3}
.article ul li::before{content:"";position:absolute;left:4px;top:15px;width:8px;height:8px;border-radius:50%;
  background:var(--blue);box-shadow:0 0 0 4px rgba(47,128,237,.14)}
.article ol{counter-reset:s;list-style:none}
.article ol li{position:relative;padding:6px 0 6px 42px;margin-bottom:4px;color:#d7dce3;counter-increment:s}
.article ol li::before{content:counter(s);position:absolute;left:0;top:6px;width:26px;height:26px;border-radius:7px;
  display:flex;align-items:center;justify-content:center;font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:700;
  background:rgba(47,128,237,.14);border:1px solid rgba(47,128,237,.4);color:var(--blue-2)}
.article strong{color:#fff;font-weight:700}
.lead+.eyebrow{margin-top:34px}

/* callout / cards */
.note{background:linear-gradient(180deg,rgba(47,128,237,.08),rgba(47,128,237,.02));
  border:1px solid rgba(47,128,237,.28);border-radius:12px;padding:18px 22px;margin:24px 0;max-width:74ch}
.note b{color:var(--blue-2)}
.dims{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin:24px 0;max-width:100%}
.dim{background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:18px}
.dim h4{margin:0 0 6px;font-size:15px;color:#fff}
.dim p{margin:0;font-size:14px;color:var(--muted);max-width:none}
.dim .z{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:7px;vertical-align:middle}

/* FAQ */
.faq{max-width:74ch;margin:22px 0}
.faq details{border:1px solid var(--line);border-radius:11px;background:var(--bg-2);margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;list-style:none;padding:17px 20px;font-weight:700;color:#fff;font-size:16px;
  display:flex;justify-content:space-between;gap:14px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:'JetBrains Mono',monospace;color:var(--blue-2);font-size:20px;flex-shrink:0}
.faq details[open] summary::after{content:"−"}
.faq details[open] summary{border-bottom:1px solid var(--line)}
.faq .a{padding:14px 20px 18px;color:var(--muted)}
.faq .a p{max-width:none;margin:0}

/* CTA */
.cta-band{margin:56px 0 20px;padding:34px 32px;border-radius:16px;
  background:linear-gradient(135deg,rgba(47,128,237,.14),rgba(47,128,237,.03));border:1px solid rgba(47,128,237,.3)}
.cta-band h2{margin:0 0 10px}
.cta-band p{margin:0 0 20px;color:var(--muted)}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15px;padding:14px 26px;border-radius:9px}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 14px 36px -14px rgba(47,128,237,.6)}
.btn-primary:hover{background:var(--blue-2);color:#fff;transform:translateY(-2px)}
.btn-ghost{border:1px solid var(--line-2);color:#fff}
.btn-ghost:hover{border-color:var(--blue-2);color:var(--blue-2)}

/* related cluster */
.related{margin:44px 0 0;border-top:1px solid var(--line);padding-top:28px}
.related h2{font-size:1.15rem;margin:0 0 16px}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.rel-grid a{display:block;background:var(--bg-2);border:1px solid var(--line);border-radius:11px;padding:16px 18px;color:#fff;font-weight:700}
.rel-grid a:hover{border-color:var(--blue-2);transform:translateY(-2px)}
.rel-grid a small{display:block;font-weight:500;color:var(--muted-2);font-size:12.5px;margin-top:4px}

/* footer */
footer.kb{border-top:1px solid var(--line);margin-top:56px;padding:30px 0;color:var(--muted-2);font-size:13.5px}
footer.kb .fbar{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
footer.kb a{color:var(--muted-2)}
footer.kb a:hover{color:var(--blue-2)}

/* скриншот в рамке браузера (для страниц с интерфейсом) */
.shot{max-width:100%;margin:26px 0 8px;border-radius:13px;overflow:hidden;border:1px solid var(--line);
  background:var(--bg-2);box-shadow:0 40px 90px -44px rgba(0,0,0,.75)}
.shot-bar{display:flex;align-items:center;gap:7px;padding:10px 15px;background:rgba(255,255,255,.03);border-bottom:1px solid var(--line)}
.shot-bar i{width:10px;height:10px;border-radius:50%;display:inline-block}
.shot-bar span{margin-left:12px;font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--muted-2);
  background:rgba(255,255,255,.04);padding:3px 11px;border-radius:6px}
.shot img{display:block;width:100%;height:auto}