:root{
  --bg:#ffffff; --bg2:#f6f8fa; --card:#ffffff; --text:#1f2328; --muted:#59636e; --line:#d1d9e0;
  --accent:#1a7f37; --accent-bg:#dafbe1; --link:#0969da; --hero1:#0b0f15; --hero2:#14223a;
  --shadow:0 1px 2px rgba(0,0,0,.05),0 10px 30px rgba(0,0,0,.06); --radius:14px; --maxw:1240px;
}
@media (prefers-color-scheme: dark){
  :root{--bg:#0d1117; --bg2:#11161d; --card:#161b22; --text:#e6edf3; --muted:#9198a1; --line:#2a313a;
        --accent:#3fb950; --accent-bg:#12261a; --link:#4493f8; --shadow:none;}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--text);
  font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--link);text-decoration:none} a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
code,kbd{font-family:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;font-size:.88em;
  background:var(--bg2);border:1px solid var(--line);border-radius:6px;padding:.1em .4em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}
@media (max-width:640px){.wrap{padding:0 18px}}
.muted{color:var(--muted)}

/* ---------- header ---------- */
.top{position:sticky;top:0;z-index:20;background:rgba(11,15,21,.9);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid #1f2630}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;color:#e6edf3;font-weight:700;font-size:18px;white-space:nowrap}
.logo:hover{text-decoration:none}
.logo svg{width:32px;height:32px;flex:none}
.menu{display:flex;align-items:center;gap:6px}
.menu a{color:#c9d1d9;font-size:15.5px;padding:8px 12px;border-radius:8px}
.menu a:hover{background:#ffffff12;text-decoration:none}
.menu a.on{color:#fff;background:#ffffff14}
.menu .gh{margin-left:8px;border:1px solid #3d444d;display:inline-flex;align-items:center;gap:7px}
.burger{display:none;background:none;border:1px solid #3d444d;border-radius:8px;color:#e6edf3;padding:7px 10px;font-size:15px;cursor:pointer}
@media (max-width:900px){
  .burger{display:block}
  .menu{display:none;position:absolute;left:0;right:0;top:66px;flex-direction:column;align-items:stretch;gap:0;
        background:#0b0f15;border-bottom:1px solid #1f2630;padding:8px 18px 16px}
  .menu.open{display:flex}
  .menu a{padding:12px 6px;border-radius:0;border-bottom:1px solid #1f2630}
  .menu .gh{margin:10px 0 0;border-radius:8px;justify-content:center}
}

/* ---------- hero ---------- */
.hero{background:radial-gradient(1100px 520px at 85% -10%,#1f6feb40,transparent),radial-gradient(700px 400px at 0% 110%,#2ea04322,transparent),
  linear-gradient(180deg,var(--hero1),var(--hero2));color:#e6edf3;padding:84px 0 88px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:56px;align-items:center}
@media (max-width:1000px){.hero-grid{grid-template-columns:1fr;gap:40px}.hero{padding:56px 0 64px}}
.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid #2ea04366;background:#2ea0431a;color:#7ee787;border-radius:999px;padding:5px 14px;font-size:14px;margin-bottom:22px}
.badge i{width:8px;height:8px;border-radius:50%;background:#3fb950;box-shadow:0 0 0 4px #3fb95033}
h1{font-size:clamp(34px,4.4vw,58px);line-height:1.06;margin:0 0 22px;letter-spacing:-.8px}
h1 em{font-style:normal;background:linear-gradient(90deg,#7ee787,#58a6ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(18px,1.6vw,21px);color:#c9d1d9;margin:0 0 32px;max-width:600px}
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:9px;border-radius:11px;padding:13px 22px;font-weight:600;font-size:16px;border:1px solid transparent;white-space:nowrap}
.btn:hover{text-decoration:none;filter:brightness(1.1)}
.btn svg{width:18px;height:18px}
.btn-primary{background:#238636;color:#fff;border-color:#2ea043}
.btn-ghost{background:#ffffff08;color:#e6edf3;border-color:#3d444d}
.btn-light{background:var(--card);color:var(--text);border-color:var(--line)}
.stats{display:grid;grid-template-columns:repeat(3,auto);justify-content:start;gap:40px;margin-top:40px}
.stats b{display:block;font-size:30px;color:#fff;line-height:1.2}
.stats span{font-size:14.5px;color:#9198a1}
@media (max-width:480px){.stats{gap:18px}.stats b{font-size:24px}.stats span{font-size:13px}}
.window{border-radius:14px;overflow:hidden;border:1px solid #30363d;box-shadow:0 30px 80px rgba(0,0,0,.5),0 0 0 1px #ffffff08;background:#0d1117}
.window img{width:100%}

/* ---------- page head (inner pages) ---------- */
.pagehead{background:linear-gradient(180deg,var(--hero1),var(--hero2));color:#e6edf3;padding:60px 0 52px}
.pagehead h1{font-size:clamp(32px,3.6vw,46px);margin:0 0 12px}
.pagehead p{color:#c9d1d9;margin:0;font-size:19px;max-width:760px}
.crumbs{font-size:14px;color:#9198a1;margin-bottom:14px}
.crumbs a{color:#9198a1}

/* ---------- sections ---------- */
section{padding:88px 0}
section.alt{background:var(--bg2)}
@media (max-width:640px){section{padding:60px 0}}
.head{max-width:780px;margin-bottom:44px}
.kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
h2{font-size:clamp(28px,3vw,40px);line-height:1.15;margin:0 0 14px;letter-spacing:-.4px}
.head p{color:var(--muted);margin:0;font-size:19px}
h3{font-size:20px;line-height:1.3;margin:0 0 8px}
.grid{display:grid;gap:22px}
.grid>*,.hero-grid>*{min-width:0}
.g4{grid-template-columns:repeat(4,1fr)} .g3{grid-template-columns:repeat(3,1fr)} .g2{grid-template-columns:repeat(2,1fr)}
@media (max-width:1100px){.g4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:900px){.g3{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.g4,.g3,.g2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.card p{margin:0;color:var(--muted)}
.card.link{display:block;color:inherit;transition:transform .15s,border-color .15s}
.card.link:hover{text-decoration:none;transform:translateY(-3px);border-color:var(--accent)}
.icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;background:var(--accent-bg);color:var(--accent)}
.icon svg{width:24px;height:24px}

/* steps */
.steps{counter-reset:s;display:grid;gap:22px;grid-template-columns:repeat(3,1fr)}
@media (max-width:900px){.steps{grid-template-columns:1fr}}
.step{position:relative;padding-left:84px}
.step::before{counter-increment:s;content:counter(s);position:absolute;left:26px;top:26px;width:40px;height:40px;border-radius:50%;
  background:var(--accent);color:#fff;font-weight:700;display:grid;place-items:center}
.vsteps{counter-reset:s}
.vsteps .step{margin-bottom:16px}

/* split blocks */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.split.rev>:first-child{order:2}
@media (max-width:900px){.split{grid-template-columns:minmax(0,1fr);gap:28px}.split.rev>:first-child{order:0}}
.shotframe{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
ul.check{list-style:none;padding:0;margin:18px 0 0}
ul.check li{position:relative;padding-left:32px;margin:10px 0}
ul.check li::before{content:"";position:absolute;left:0;top:.35em;width:20px;height:20px;border-radius:50%;background:var(--accent-bg);
  box-shadow:inset 0 0 0 1px var(--accent)}
ul.check li::after{content:"";position:absolute;left:7px;top:.62em;width:5px;height:9px;border:solid var(--accent);border-width:0 2px 2px 0;transform:rotate(45deg)}

/* blocks list */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:7px 14px;font-size:15px}
.chip code{background:none;border:none;padding:0}

/* gallery */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.filters button{font:inherit;font-size:15px;border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:999px;padding:8px 16px;cursor:pointer}
.filters button.on{background:var(--accent);border-color:var(--accent);color:#fff}
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media (max-width:1100px){.gallery{grid-template-columns:repeat(3,1fr)}}
@media (max-width:800px){.gallery{grid-template-columns:repeat(2,1fr)}}
@media (max-width:480px){.gallery{grid-template-columns:1fr}}
.shot{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:border-color .15s}
.shot:hover{border-color:var(--accent)}
.shot .pic{background:#fff;height:230px;padding:12px;cursor:zoom-in;border-bottom:1px solid var(--line)}
.shot .pic img{width:100%;height:100%;object-fit:contain}
.shot .cap{padding:14px 16px 16px;font-size:14.5px;display:flex;flex-direction:column;gap:4px;flex:1}
.shot .cap b{font-size:16px}
.shot .cap .muted{flex:1}
.shot .tag{align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--accent);background:var(--accent-bg);border-radius:6px;padding:2px 8px}
.shot .links{display:flex;gap:14px;margin-top:6px;font-size:14px}
.shot.hide{display:none}

/* code */
pre{margin:0;background:#0d1117;color:#e6edf3;border:1px solid #30363d;border-radius:12px;padding:22px;overflow:auto;
  font:14.5px/1.65 ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace}
.k{color:#ff7b72}.s{color:#a5d6ff}.n{color:#79c0ff}.f{color:#d2a8ff}.c{color:#8b949e}

/* table */
.table{width:100%;border-collapse:collapse;font-size:16px;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.table th,.table td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top}
.table th{background:var(--bg2);font-size:14px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.table tr:last-child td{border-bottom:none}
.tablewrap{overflow-x:auto}

/* docs layout */
.docs{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;align-items:start}
.toc{position:sticky;top:96px;font-size:15px}
.toc b{display:block;margin-bottom:10px;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.toc a{display:block;color:var(--muted);padding:5px 0 5px 12px;border-left:2px solid var(--line)}
.toc a:hover{color:var(--text);border-color:var(--accent);text-decoration:none}
@media (max-width:900px){.docs{grid-template-columns:minmax(0,1fr)}.toc{position:static;display:none}}
.prose{max-width:820px}
.prose h2{font-size:30px;margin:56px 0 14px;padding-top:8px}
.prose h2:first-child{margin-top:0}
.prose h3{margin:30px 0 10px}
.prose .step h3{margin-top:0}
.prose p,.prose li{color:var(--text)}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin:6px 0}
.prose pre{margin:18px 0}
.note{border:1px solid var(--line);border-left:4px solid var(--accent);background:var(--card);border-radius:10px;padding:16px 20px;margin:20px 0}
.note.warn{border-left-color:#d29922}

/* articles */
.post-meta{color:#9198a1;font-size:15px;margin-top:14px}
.postlist .card h3{font-size:22px}

/* faq */
details{border:1px solid var(--line);border-radius:12px;background:var(--card);padding:0 22px;margin-bottom:12px}
summary{cursor:pointer;font-weight:600;padding:18px 0;list-style:none;display:flex;justify-content:space-between;gap:12px;font-size:17.5px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--muted);font-weight:400;font-size:24px;line-height:1}
details[open] summary::after{content:"–"}
details p{margin:0 0 18px;color:var(--muted)}

/* cta */
.cta{background:linear-gradient(135deg,#0f2a1a,#0b1d33);color:#e6edf3;border-radius:20px;padding:56px;display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.cta h2{margin:0 0 8px}
.cta p{margin:0;color:#c9d1d9;font-size:18px}
@media (max-width:640px){.cta{padding:32px 24px}}

/* footer */
.foot{border-top:1px solid var(--line);padding:56px 0 40px;font-size:15px;color:var(--muted);background:var(--bg2)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
@media (max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot b{display:block;color:var(--text);margin-bottom:10px;font-size:15px}
.foot a{display:block;color:var(--muted);padding:3px 0}
.foot a:hover{color:var(--text)}
.foot .legal{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);font-size:13.5px}
.foot .brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;margin-bottom:10px}
.foot .brand svg{width:28px;height:28px}

/* lightbox */
.lb{position:fixed;inset:0;background:rgba(1,4,9,.88);display:none;align-items:center;justify-content:center;padding:24px;z-index:50;cursor:zoom-out;flex-direction:column;gap:14px}
.lb.on{display:flex}
.lb img{max-width:min(1400px,96vw);max-height:86vh;background:#fff;border-radius:12px;padding:12px}
.lb span{color:#e6edf3;font-size:16px}