:root{
  --bg:#0e1116; --panel:#161b22; --panel-2:#1c2230; --line:#262d39;
  --fg:#e7ecf3; --muted:#9aa6b6; --faint:#6b7585;
  --up:#e5484d;          /* A 股红=涨，做主强调色 */
  --accent:#4c8dff; --accent-soft:#1c2740;
  --radius:14px; --maxw:1080px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,"PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.wrap-narrow{max-width:780px;margin:0 auto;padding:0 22px}
.muted{color:var(--muted)}
.faint{color:var(--faint)}
.mono{font-family:var(--mono)}

/* nav */
nav{position:sticky;top:0;z-index:20;background:rgba(14,17,22,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;gap:18px;height:58px}
.brand{font-weight:700;font-size:18px;letter-spacing:.3px;display:inline-flex;align-items:baseline;gap:7px}
.brand b{color:var(--up)}
.brand .brand-full{font-weight:500;font-size:12.5px;color:var(--faint);letter-spacing:.2px}
nav .links{margin-left:auto;display:flex;gap:22px;font-size:14px}
nav .links a{color:var(--muted)}
nav .links a:hover{color:var(--fg)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:10px;font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:.15s}
.btn-primary{background:var(--up);color:#fff}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost{border-color:var(--line);color:var(--fg)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* hero */
header.hero{padding:84px 0 64px;background:
   radial-gradient(900px 380px at 75% -10%, rgba(76,141,255,.14), transparent 60%),
   radial-gradient(700px 320px at 10% 0%, rgba(229,72,77,.10), transparent 55%);}
.hero h1{font-size:clamp(34px,5.4vw,56px);line-height:1.1;margin:0 0 18px;letter-spacing:-.5px}
.hero h1 .hl{color:var(--up)}
.hero .lede{font-size:clamp(16px,2.2vw,20px);color:var(--muted);max-width:620px;margin:0 0 14px}
.pricetag{display:inline-block;font-size:14px;color:var(--fg);background:var(--accent-soft);border:1px solid #2b3a5e;border-radius:999px;padding:6px 14px;margin-bottom:26px}
.pricetag b{color:#fff}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:22px}
.trust{font-size:14px;color:var(--muted);max-width:640px;border-left:3px solid var(--up);padding:6px 0 6px 14px}
.trust b{color:var(--fg)}

/* sections */
section{padding:58px 0;border-top:1px solid var(--line)}
.sec-h{font-size:13px;letter-spacing:2px;text-transform:uppercase;color:var(--faint);margin:0 0 6px}
.sec-t{font-size:clamp(22px,3vw,30px);margin:0 0 30px;letter-spacing:-.3px}

.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:820px){.grid3{grid-template-columns:1fr}}

.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card h3{margin:0 0 8px;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:14.5px}
.card .tag{display:inline-block;font-size:12px;color:var(--accent);background:var(--accent-soft);border-radius:6px;padding:2px 8px;margin-top:12px}

/* pricing */
.price-card{position:relative;display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px}
.price-card.feat{border-color:var(--up);background:linear-gradient(180deg,rgba(229,72,77,.08),var(--panel) 60%)}
.ribbon{position:absolute;top:-11px;right:18px;background:var(--up);color:#fff;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px}
.price-card .name{font-size:15px;color:var(--muted)}
.price-card .amt{font-size:38px;font-weight:800;margin:6px 0 2px;letter-spacing:-1px}
.price-card .amt small{font-size:15px;font-weight:500;color:var(--muted)}
.price-card .delta{font-size:13px;color:var(--faint);min-height:20px;margin-bottom:14px}
.price-card ul{list-style:none;padding:0;margin:0 0 22px;flex:1}
.price-card li{font-size:14.5px;color:var(--fg);padding:7px 0 7px 24px;position:relative;border-top:1px solid var(--line)}
.price-card li:first-child{border-top:0}
.price-card li::before{content:"+";position:absolute;left:0;top:7px;color:var(--up);font-weight:800}
.price-card li.base::before{content:"✓";color:var(--accent);font-weight:700}

/* value strip */
.value{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:820px){.value{grid-template-columns:1fr}}
.value .v{background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.value .v b{display:block;font-size:16px;margin-bottom:4px}
.value .v span{color:var(--muted);font-size:14px}

/* downloads */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:820px){.dl-grid{grid-template-columns:1fr}}
.dl{display:flex;flex-direction:column;gap:2px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:14px 16px;transition:.15s}
.dl:hover{border-color:var(--accent);transform:translateY(-1px)}
.dl .os{font-weight:600;font-size:15px}
.dl .file{font-family:var(--mono);font-size:12.5px;color:var(--faint)}
.dl-note{margin-top:16px;font-size:13.5px;color:var(--muted)}
.dl-note code{font-family:var(--mono);background:var(--panel-2);padding:2px 6px;border-radius:5px;font-size:12.5px}

/* tech line */
.tech{font-size:13.5px;color:var(--faint);text-align:center;line-height:2}
.tech code{font-family:var(--mono);color:var(--muted)}

footer{border-top:1px solid var(--line);padding:34px 0;font-size:13.5px;color:var(--faint)}
footer .wrap{display:flex;flex-wrap:wrap;gap:18px;align-items:center}
footer a{color:var(--muted)}
footer a:hover{color:var(--fg)}
footer .sp{margin-left:auto}

/* ---- doc / prose pages (cli.html) ---- */
.doc{padding:48px 0 80px}
.doc h1{font-size:clamp(28px,4vw,40px);margin:0 0 8px;letter-spacing:-.5px}
.doc .sub{color:var(--muted);font-size:16px;margin:0 0 8px}
.prose{font-size:15.5px}
.prose h2{font-size:23px;margin:46px 0 14px;padding-top:20px;border-top:1px solid var(--line);letter-spacing:-.3px;scroll-margin-top:74px}
.prose h2:first-of-type{border-top:0;padding-top:0;margin-top:34px}
.prose h3{font-size:17px;margin:28px 0 8px;color:var(--fg)}
.prose p{color:var(--muted);margin:10px 0}
.prose ul,.prose ol{color:var(--muted);padding-left:22px;margin:10px 0}
.prose li{margin:5px 0}
.prose a{color:var(--accent)}
.prose a:hover{text-decoration:underline}
.prose strong{color:var(--fg)}
.prose code{font-family:var(--mono);background:var(--panel-2);border:1px solid var(--line);padding:1px 6px;border-radius:5px;font-size:13px;color:#cdd6e3}
.prose pre{background:#0a0d12;border:1px solid var(--line);border-radius:10px;padding:14px 16px;overflow:auto;margin:12px 0;font-size:13px;line-height:1.65}
.prose pre code{background:none;border:0;padding:0;color:#c9d3e0}
.prose .cmt{color:#5e6b7d}
.prose .dlbase,.prose .sitebase{color:#7aa2ff}
.prose table{width:100%;border-collapse:collapse;margin:14px 0;font-size:14px}
.prose th,.prose td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--line)}
.prose th{color:var(--faint);font-weight:600;font-size:12.5px;text-transform:uppercase;letter-spacing:.5px}
.prose td{color:var(--muted)}
.prose td code{font-size:12.5px}

/* callouts */
.callout{border-radius:10px;padding:14px 16px;margin:16px 0;font-size:14.5px;border:1px solid var(--line);background:var(--panel)}
.callout b{color:var(--fg)}
.callout.warn{border-color:#5a2b2d;background:rgba(229,72,77,.08)}
.callout.note{border-color:#2b3a5e;background:var(--accent-soft)}
.callout .ttl{display:block;font-weight:700;color:var(--fg);margin-bottom:4px}

/* in-page table of contents */
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 6px}
.toc a{font-size:13px;color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:5px 13px}
.toc a:hover{border-color:var(--accent);color:var(--accent)}

/* ---- quick demo (terminal) ---- */
.demo-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:center}
@media(max-width:820px){.demo-grid{grid-template-columns:1fr}}
.terminal{background:#0a0d12;border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:0 12px 40px rgba(0,0,0,.35)}
.terminal .bar{display:flex;gap:7px;padding:11px 14px;background:#12161d;border-bottom:1px solid var(--line)}
.terminal .bar span{width:11px;height:11px;border-radius:50%;background:#2b333f}
.terminal .bar span:nth-child(1){background:#e5484d}
.terminal .bar span:nth-child(2){background:#e3b341}
.terminal .bar span:nth-child(3){background:#3fb950}
.terminal pre{margin:0;padding:16px 18px;overflow:auto;font-family:var(--mono);font-size:13px;line-height:1.7;color:#c9d3e0}
.terminal .cmt{color:#5e6b7d}
.terminal .pr{color:var(--up)}
.terminal .dlbase,.terminal .sitebase{color:#7aa2ff}
.demo-side a{color:var(--accent)}
.demo-side a:hover{text-decoration:underline}
.demo-side p{color:var(--muted);font-size:15px;margin:0 0 12px}
.demo-side ul{margin:0;padding-left:20px;color:var(--muted);font-size:14px}
.demo-side li{margin:6px 0}
.demo-side b{color:var(--fg)}
.demo-side code{font-family:var(--mono);background:var(--panel-2);border:1px solid var(--line);padding:1px 6px;border-radius:5px;font-size:12.5px;color:#cdd6e3}

/* ---- subscribe / payment + QR ---- */
.subscribe-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:30px;align-items:center}
@media(max-width:820px){.subscribe-grid{grid-template-columns:1fr}}
.flow{list-style:none;counter-reset:step;padding:0;margin:0}
.flow li{counter-increment:step;position:relative;padding:14px 0 14px 46px;border-top:1px solid var(--line);color:var(--muted);font-size:15px}
.flow li:first-child{border-top:0}
.flow li::before{content:counter(step);position:absolute;left:0;top:12px;width:28px;height:28px;border-radius:50%;background:var(--accent-soft);border:1px solid #2b3a5e;color:#cdd6e3;font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center}
.flow b{color:var(--fg)}
.flow code{font-family:var(--mono);background:var(--panel-2);border:1px solid var(--line);padding:1px 6px;border-radius:5px;font-size:12.5px;color:#cdd6e3}
.qr{text-align:center}
.qr-pair{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.qr-item{margin:0;text-align:center}
.qr-item img{width:150px;height:150px;border-radius:12px;border:1px solid var(--line);object-fit:contain;background:#fff;padding:7px;cursor:zoom-in;transition:transform .12s}
.qr-item img:hover{transform:scale(1.03)}
.qr-item figcaption{margin-top:8px;font-size:13px;color:var(--muted);font-weight:600}
.qr-cap{margin:14px 0 0;font-size:13.5px;color:var(--muted)}

/* click-to-zoom lightbox */
.lightbox{position:fixed;inset:0;z-index:50;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.82);backdrop-filter:blur(4px);cursor:zoom-out;padding:24px}
.lightbox.open{display:flex}
.lightbox figure{margin:0;text-align:center}
.lightbox img{max-width:min(86vw,400px);max-height:82vh;border-radius:14px;background:#fff;padding:14px;box-shadow:0 24px 70px rgba(0,0,0,.55)}
.lightbox figcaption{margin-top:14px;color:#e7ecf3;font-size:15px;font-weight:600}