:root{
  --bg:#f6f8fb;--card:#fff;--ink:#14202e;--muted:#566577;--line:#dde4ec;
  --accent:#1593d6;--accent-ink:#fff;--soft:#e8f4fb;--alt:#eef3f8;--code:#0f1c2b;--code-ink:#d8e6f3;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0e151d;--card:#16212d;--ink:#e8eef5;--muted:#9bacbf;--line:#263646;--accent:#3db3f0;--accent-ink:#06121c;--soft:#12303f;--alt:#121b25;--code:#08111a;--code-ink:#cfe0f0}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent)}
.top{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 24px;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.brand{color:var(--ink);text-decoration:none;font-weight:600;white-space:nowrap}
.brand b{color:var(--accent)}
.top nav{display:flex;gap:4px;overflow-x:auto}
.top nav a{padding:6px 12px;border-radius:999px;color:var(--muted);text-decoration:none;font-size:14px;white-space:nowrap}
.top nav a:hover{background:var(--soft);color:var(--ink)}
main{max-width:1080px;margin:0 auto;padding:0 24px}
.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;padding:56px 0 32px}
.kicker{margin:0 0 8px;color:var(--accent);font-weight:600;font-size:14px;letter-spacing:.04em;text-transform:uppercase}
h1{margin:0 0 16px;font-size:clamp(30px,5vw,48px);line-height:1.1;letter-spacing:-.02em}
h1 span{color:var(--accent)}
.lead{color:var(--muted);font-size:17px;margin:0 0 24px}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-block;padding:11px 18px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--ink);text-decoration:none;font-weight:600;font-size:15px}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.hero-photo{margin:0}
.hero-photo img{border-radius:18px;border:1px solid var(--line);aspect-ratio:4/3.2;object-fit:cover}
.steps-strip{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px;margin:8px 0 24px}
.steps-strip a{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--ink);text-decoration:none;font-size:14px;font-weight:500}
.steps-strip a:hover{border-color:var(--accent)}
.steps-strip i{display:grid;place-items:center;flex:none;width:24px;height:24px;border-radius:50%;background:var(--soft);color:var(--accent);font-style:normal;font-size:13px;font-weight:700}
.block{padding:48px 0;border-top:1px solid var(--line)}
.block.alt{background:var(--alt);margin:0 -24px;padding-left:24px;padding-right:24px;border-radius:0}
@media(min-width:1129px){.block.alt{margin:0 calc(-1*(100vw - 1080px)/2);padding-left:calc((100vw - 1080px)/2 + 24px);padding-right:calc((100vw - 1080px)/2 + 24px)}}
.head{display:flex;align-items:center;gap:14px;margin-bottom:8px}
.num{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--accent);color:var(--accent-ink);font-weight:700}
h2{margin:0;font-size:clamp(22px,3.4vw,30px);letter-spacing:-.01em}
h3{margin:20px 0 8px;font-size:17px}
.intro{margin:0 0 24px;color:var(--muted);max-width:68ch}
.two{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
figure{margin:0}
figure img{border-radius:14px;border:1px solid var(--line)}
figcaption{margin-top:8px;color:var(--muted);font-size:14px}
figure.wide img{width:100%;background:#fff}
table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;font-size:15px}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--soft);font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
tr:last-child td{border-bottom:0}
.note{margin:14px 0 0;color:var(--muted);font-size:14px}
.cards{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:12px;counter-reset:c}
.cards li{counter-increment:c;padding:18px;border-radius:14px;background:var(--card);border:1px solid var(--line)}
.cards li::before{content:counter(c);display:grid;place-items:center;width:28px;height:28px;margin-bottom:10px;border-radius:50%;background:var(--soft);color:var(--accent);font-weight:700;font-size:14px}
.cards b{display:block;margin-bottom:4px}
.cards span{color:var(--muted);font-size:15px}
.steps{list-style:none;margin:0;padding:0;counter-reset:s;display:grid;gap:12px}
.steps li{counter-increment:s;position:relative;padding:16px 18px 16px 62px;border-radius:14px;background:var(--card);border:1px solid var(--line)}
.steps li::before{content:counter(s);position:absolute;left:16px;top:16px;display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--accent);color:var(--accent-ink);font-weight:700;font-size:14px}
.steps h3{margin:0 0 4px}
.steps p{margin:0;color:var(--muted)}
.ports{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:20px}
.ports div{padding:14px;border-radius:12px;background:var(--card);border:1px solid var(--line)}
.ports b{display:block;color:var(--accent);font-size:18px}
.ports span{color:var(--muted);font-size:14px}
.code{margin-top:20px;border-radius:14px;overflow:hidden;background:var(--code)}
.code-top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;color:#9fb4c8;font-size:14px;border-bottom:1px solid #1f3043}
.code-top button{padding:6px 12px;border:1px solid #2d4560;border-radius:8px;background:transparent;color:#d8e6f3;font:inherit;cursor:pointer}
.code-top button:hover{border-color:var(--accent)}
pre{margin:0;padding:16px;overflow-x:auto;color:var(--code-ink);font:14px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.chips li{padding:6px 12px;border-radius:999px;background:var(--card);border:1px solid var(--line);font-size:14px}
.ideas{margin:0;padding-left:20px;display:grid;gap:8px;max-width:68ch}
footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;max-width:1080px;margin:0 auto;padding:28px 24px 40px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
@media(max-width:860px){
  .hero,.two{grid-template-columns:1fr}
  .steps-strip{grid-template-columns:repeat(3,minmax(0,1fr))}
  .steps-strip a{padding:9px 8px;font-size:13px;gap:6px}
  .cards,.ports{grid-template-columns:1fr 1fr}
  .top{padding:10px 16px}
  main{padding:0 16px}
  .block.alt{margin:0 -16px;padding-left:16px;padding-right:16px}
}
@media(max-width:480px){
  .top nav{display:none}
  .cards,.ports{grid-template-columns:1fr}
  .steps li{padding-left:56px}
}

.thumbs{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.thumb{padding:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--card);cursor:zoom-in;line-height:0}
.thumb img{width:112px;height:84px;object-fit:cover;transition:transform .2s,opacity .2s;opacity:.92}
.thumb:hover img,.thumb:focus-visible img{transform:scale(1.05);opacity:1}
.thumb:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.inline-photo{margin:20px 0 0;display:flex;align-items:center;gap:12px}
.inline-photo .thumb img{width:140px;height:105px}
.inline-photo figcaption{margin:0}
dialog#lightbox{max-width:min(92vw,980px);width:100%;padding:0;border:0;border-radius:14px;background:var(--card);color:var(--ink);overflow:hidden}
dialog#lightbox::backdrop{background:rgba(5,12,20,.72)}
#lb-img{width:100%;max-height:78vh;object-fit:contain;background:#0b141d}
#lb-cap{margin:0;padding:12px 16px;font-size:14px;color:var(--muted)}
.lb-close{position:absolute;top:8px;right:8px;width:36px;height:36px;border:0;border-radius:50%;background:rgba(0,0,0,.55);color:#fff;font-size:22px;line-height:1;cursor:pointer}
@media(max-width:480px){.thumb img{width:92px;height:69px}}

.hero-photo video{display:block;width:100%;height:auto;aspect-ratio:4/3;border-radius:18px;border:1px solid var(--line);background:#0b141d;object-fit:cover}

.thumb.poster{display:block;width:100%;cursor:zoom-in;border-radius:18px}
.thumb.poster img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;opacity:1}
.video-band{margin:0 0 24px;display:flex;flex-direction:column;align-items:center;gap:8px}
.video-band video{width:100%;max-width:620px;height:auto;aspect-ratio:4/3;border-radius:16px;border:1px solid var(--line);background:#0b141d;object-fit:cover}
.video-band p{margin:0;color:var(--muted);font-size:14px}

.counter{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:20px;color:var(--muted);font-size:15px}
.counter .stat b{color:var(--ink);font-size:18px;font-variant-numeric:tabular-nums}
.like-btn{padding:7px 14px;border:1px solid var(--line);border-radius:999px;background:var(--card);color:var(--ink);font:inherit;font-size:14px;font-weight:600;cursor:pointer}
.like-btn:hover:not(:disabled){border-color:var(--accent)}
.like-btn:disabled{opacity:.5;cursor:default}
.like-btn.is-liked{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.counter-status{flex-basis:100%;font-size:13px}
.counter-status:empty{display:none}