:root{
  --bg:#060912;--surface:#0f1629;--surface-2:#141d33;--border:rgba(255,255,255,.09);
  --border-strong:rgba(255,255,255,.15);--text:#eef2ff;--muted:#9aa6c4;--faint:#6b779a;
  --brand:#3b82f6;--brand-2:#22d3ee;--accent:#a855f7;
  --grad:linear-gradient(135deg,#22d3ee,#3b82f6,#a855f7);
  --shadow:0 30px 80px -40px rgba(0,0,0,.85);--radius:20px;
  --font:'Plus Jakarta Sans',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}
html[data-theme="light"]{--bg:#f4f7fc;--surface:#fff;--surface-2:#f2f6ff;--border:rgba(10,20,50,.1);--border-strong:rgba(10,20,50,.16);--text:#0b1228;--muted:#4b5878;--faint:#7d88a6;--shadow:0 30px 80px -45px rgba(20,40,90,.45)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.75;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-1;background:radial-gradient(60% 40% at 12% 0%,rgba(34,211,238,.10),transparent 60%),radial-gradient(55% 40% at 92% 4%,rgba(168,85,247,.10),transparent 60%),var(--bg)}
a{color:var(--brand-2);text-decoration:none}
img{max-width:100%;display:block}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
header{position:sticky;top:0;z-index:20;backdrop-filter:blur(16px);background:color-mix(in srgb,var(--bg) 78%,transparent);border-bottom:1px solid var(--border)}
nav{display:flex;align-items:center;justify-content:space-between;max-width:1100px;margin:0 auto;padding:14px 24px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;color:var(--text)}
.logo img{width:36px;height:36px;border-radius:10px}
.nav-r{display:flex;gap:10px;align-items:center}
.nav-r a{color:var(--muted);font-weight:600;font-size:15px;padding:8px 4px}
.nav-r a:hover{color:var(--text)}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14px;padding:11px 18px;border-radius:12px;border:1px solid transparent;cursor:pointer}
.btn.primary{background:var(--grad);color:#03101f}
.btn.ghost{background:var(--surface);border-color:var(--border-strong);color:var(--text)}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}
.article-wrap{max-width:760px;margin:0 auto;padding:0 24px}
.crumbs{font-size:13.5px;color:var(--faint);margin:30px 0 6px}
.crumbs a{color:var(--muted)}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-2);padding:6px 13px;border:1px solid var(--border-strong);border-radius:999px}
h1{font-size:clamp(30px,5vw,46px);font-weight:800;letter-spacing:-.02em;line-height:1.14}
h2{font-size:clamp(23px,3vw,30px);font-weight:800;letter-spacing:-.01em;margin:38px 0 14px}
h3{font-size:19px;font-weight:700;margin:26px 0 8px}
p{color:var(--muted);font-size:17px;margin:14px 0}
.lead{font-size:19.5px;color:var(--text);margin:18px 0 8px}
.meta{color:var(--faint);font-size:14px;margin-top:14px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow);margin:26px 0}
article ul,article ol{margin:14px 0 14px 4px;padding-inline-start:22px;display:grid;gap:10px}
article li{color:var(--muted);font-size:17px}
article li b,article p b{color:var(--text)}
blockquote{border-inline-start:3px solid var(--brand);background:var(--surface);border-radius:0 14px 14px 0;padding:16px 20px;margin:22px 0;color:var(--text);font-size:17px}
.callout{background:linear-gradient(135deg,rgba(34,211,238,.1),rgba(168,85,247,.1));border:1px solid var(--border-strong);border-radius:var(--radius);padding:24px 26px;margin:30px 0}
.callout h3{margin-top:0}
.tag{display:inline-block;font-size:12px;font-weight:700;color:var(--brand-2);background:color-mix(in srgb,var(--brand) 14%,transparent);padding:5px 11px;border-radius:999px}
/* blog index cards */
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin:44px 0}
.post{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .3s,border-color .3s,box-shadow .3s;display:flex;flex-direction:column}
.post:hover{transform:translateY(-6px);border-color:var(--border-strong);box-shadow:var(--shadow)}
.post .thumb{aspect-ratio:16/10;width:100%;object-fit:cover}
.post .body{padding:20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.post h3{margin:0;font-size:19px;line-height:1.3}
.post p{margin:0;font-size:14.5px}
.post .more{margin-top:auto;font-weight:700;color:var(--brand-2);font-size:14.5px}
.cta-band{background:var(--surface);border:1px solid var(--border-strong);border-radius:24px;padding:46px 34px;text-align:center;margin:60px 0;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:var(--grad);opacity:.12}
.cta-band>*{position:relative}
.appstore-badge{display:inline-flex;align-items:center;gap:13px;background:linear-gradient(180deg,#1a1a1c,#000);color:#fff;padding:12px 24px;border-radius:15px;border:1px solid rgba(255,255,255,.22);box-shadow:0 12px 34px -12px rgba(0,0,0,.7);margin-top:18px;transition:transform .25s,box-shadow .25s}
.appstore-badge:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 18px 44px -12px rgba(0,0,0,.75)}
html[data-theme="light"] .appstore-badge{border-color:rgba(0,0,0,.12);box-shadow:0 12px 30px -12px rgba(0,0,0,.4)}
.appstore-badge svg{width:28px;height:28px;flex-shrink:0}
.appstore-badge>span{display:flex;flex-direction:column;align-items:flex-start;line-height:1.05}
.appstore-badge .small{font-size:11px;font-weight:500;opacity:.92;letter-spacing:.02em}.appstore-badge .big{font-size:20px;font-weight:700;letter-spacing:-.01em;margin-top:3px}
.related{border-top:1px solid var(--border);margin-top:50px;padding-top:30px}
.related a{display:block;color:var(--text);font-weight:600;margin:10px 0}
footer{border-top:1px solid var(--border);padding:44px 24px 28px;color:var(--faint);font-size:13.5px;margin-top:60px}
.foot-top{max-width:1100px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:11px;text-align:center}
.foot-brand{display:inline-flex;align-items:center;gap:9px;font-weight:800;font-size:18px;color:var(--text)}
.foot-brand img{width:30px;height:30px;border-radius:8px}
.foot-about{max-width:470px;margin:0;color:var(--muted)}
.foot-nav{display:flex;gap:18px;flex-wrap:wrap;justify-content:center;margin-top:4px}
.foot-nav a{color:var(--muted);font-weight:600}
.foot-nav a:hover{color:var(--brand-2)}
.foot-legal{max-width:1100px;margin:26px auto 0;padding-top:20px;border-top:1px solid var(--border);display:flex;justify-content:space-between;gap:10px 20px;flex-wrap:wrap;font-size:12.5px}
.foot-legal a{color:var(--brand-2);font-weight:600}
@media(max-width:820px){.posts{grid-template-columns:1fr}.nav-r a{display:none}.foot-legal{justify-content:center;text-align:center}}
/* article images + video */
.post-img{width:100%;border-radius:var(--radius);border:1px solid var(--border);margin:6px 0}
.post-figure{margin:26px 0}
.post-figure figcaption{color:var(--faint);font-size:13.5px;text-align:center;margin-top:8px}
.video-embed{position:relative;padding-top:56.25%;margin:26px 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.video-embed iframe,.video-embed video{position:absolute;inset:0;width:100%;height:100%;border:0}