:root{
  --bg:#ffffff;--bg-soft:#f4f8fc;--surface:#ffffff;--surface-2:#eef4fb;--surface-3:#e3ecf6;
  --ink:#0f1b2d;--ink-2:#2b3a52;--muted:#516277;--faint:#5f7086;
  --line:#dde6f0;--line-2:#cbd8e6;
  --primary:#2563eb;--primary-ink:#1d4fd0;--primary-soft:#e8f0ff;--secondary:#1b3672;--cyan:#00b8d6;--indigo:#3b3693;
  --grad:linear-gradient(135deg,#2563eb 0%,#3b3693 100%);
  --hero-glow:radial-gradient(900px 420px at 15% -10%,rgba(0,184,214,.16),transparent 60%),radial-gradient(800px 420px at 95% 0%,rgba(59,54,147,.14),transparent 60%);
  --shadow:0 1px 2px rgba(2,6,23,.04),0 20px 44px -22px rgba(23,78,166,.22);
  --shadow-hover:0 2px 4px rgba(2,6,23,.05),0 30px 58px -22px rgba(23,78,166,.34);
  --radius:20px;
  --font:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color-scheme:light;
}
html.dark,:root[data-theme="dark"]{
  --bg:#0b1220;--bg-soft:#0e1729;--surface:#121e33;--surface-2:#16253f;--surface-3:#1c2e4d;
  --ink:#e8f0f7;--ink-2:#c6d3e1;--muted:#a8bbc9;--faint:#6f839b;
  --line:#22344f;--line-2:#294258;
  --primary:#5b8cff;--primary-ink:#8fb0ff;--primary-soft:#172a52;--secondary:#2d5794;--cyan:#22d3ee;
  --grad:linear-gradient(135deg,#2563eb 0%,#4f46e5 100%);
  --hero-glow:radial-gradient(900px 420px at 15% -10%,rgba(0,184,214,.14),transparent 60%),radial-gradient(800px 420px at 95% 0%,rgba(79,70,229,.2),transparent 60%);
  --shadow:0 1px 2px rgba(0,0,0,.3),0 20px 44px -22px rgba(0,0,0,.6);
  --shadow-hover:0 2px 4px rgba(0,0,0,.35),0 30px 58px -22px rgba(0,0,0,.75);
  color-scheme:dark;
}

*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font:16px/1.6 var(--font);-webkit-font-smoothing:antialiased;transition:background .25s,color .25s}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;cursor:pointer}
svg.i{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;flex:none}
svg.i.fill{fill:currentColor;stroke:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 80%,transparent);backdrop-filter:saturate(1.5) blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.02em}
.brand-tile{width:42px;height:42px;border-radius:12px;overflow:hidden;display:grid;place-items:center;background:#fff;box-shadow:0 0 0 1px var(--line),0 8px 18px -10px rgba(37,99,235,.6)}
html.dark .brand-tile{background:#000}
.brand-tile img{width:118%;height:118%;object-fit:contain}
.brand-tile .logo-dark{display:none}
html.dark .brand-tile .logo-light{display:none}
html.dark .brand-tile .logo-dark{display:block}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{padding:8px 14px;border-radius:999px;font-size:15px;font-weight:500;color:var(--muted);transition:color .15s,background .15s}
.nav a:hover{color:var(--ink);background:var(--surface-2)}
.nav a[aria-current="page"]{color:var(--primary-ink);background:var(--primary-soft);font-weight:600}
.icon-btn{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;color:var(--ink-2);transition:background .15s,border-color .15s,transform .15s}
.icon-btn:hover{background:var(--surface-2);border-color:var(--line-2)}
.icon-btn:active{transform:scale(.96)}
.theme-toggle .sun{display:none}
html.dark .theme-toggle .sun{display:block}
html.dark .theme-toggle .moon{display:none}
.menu-toggle{display:none}

/* Hero */
.hero{position:relative;padding:72px 0 36px;background:var(--hero-glow)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary-ink);font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(0,184,214,.2)}
.hero h1{margin:18px 0 12px;font-size:clamp(36px,5.4vw,60px);line-height:1.05;letter-spacing:-.035em;font-weight:800}
.hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
html.dark .hero h1 span{background:linear-gradient(135deg,#7aa2ff,#22d3ee);-webkit-background-clip:text;background-clip:text}
.hero p{margin:0;max-width:560px;color:var(--muted);font-size:18px}
.controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-top:32px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--line);background:var(--surface);color:var(--ink-2);height:38px;padding:0 16px;border-radius:999px;font-size:14px;font-weight:600;transition:all .15s}
.chip:hover{border-color:var(--line-2);background:var(--surface-2)}
.chip[aria-pressed="true"]{background:var(--grad);border-color:transparent;color:#fff;box-shadow:0 8px 18px -10px rgba(37,99,235,.8)}
.search{display:flex;align-items:center;gap:8px;height:42px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--faint);min-width:260px;transition:border-color .15s,box-shadow .15s}
.search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 18%,transparent)}
.search input{border:0;outline:0;background:transparent;font:inherit;font-size:15px;color:var(--ink);width:100%}

/* Cards */
.section{padding:20px 0 90px}
.featured{display:grid;grid-template-columns:1.25fr 1fr;border-radius:calc(var(--radius) + 4px);overflow:hidden;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);margin-bottom:32px;transition:box-shadow .3s,transform .3s}
.featured:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.featured .media{min-height:400px}
.featured .media img{position:absolute;inset:0}
.featured .body{padding:40px;display:flex;flex-direction:column;justify-content:center;gap:14px}
.featured h2{margin:0;font-size:clamp(26px,3vw,36px);line-height:1.15;letter-spacing:-.025em;font-weight:800}
.featured p{margin:0;color:var(--muted);font-size:17px}
.media{position:relative;overflow:hidden;background:var(--surface-2)}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.22,1,.36,1)}
.featured:hover .media img,.card:hover .media img{transform:scale(1.04)}
.media-fallback{position:absolute;inset:0;display:grid;place-items:center;color:rgba(255,255,255,.95)}
.media-fallback svg{width:46px;height:46px;stroke-width:1.5}
.media-fallback::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(255,255,255,.25),transparent 45%),repeating-linear-gradient(135deg,rgba(255,255,255,.07) 0 2px,transparent 2px 14px)}
.badge{display:inline-flex;align-items:center;gap:6px;width:max-content;height:28px;padding:0 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary-ink);font-size:12.5px;font-weight:700;letter-spacing:.02em}
.badge-star{background:linear-gradient(135deg,#f59e0b,#f97316);color:#fff}
.badge-star svg{width:13px;height:13px;fill:currentColor;stroke:none}
.badges{display:flex;gap:8px;flex-wrap:wrap}
.meta{display:flex;align-items:center;flex-wrap:wrap;gap:6px 14px;color:var(--faint);font-size:14px}
.meta span{display:inline-flex;align-items:center;gap:6px}
.meta svg{width:15px;height:15px}
.read-more{display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--primary-ink);margin-top:6px}
.read-more svg{transition:transform .2s}
.featured:hover .read-more svg,.card:hover .read-more svg{transform:translateX(4px)}

.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.card{display:flex;flex-direction:column;border-radius:var(--radius);overflow:hidden;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);transition:box-shadow .3s,transform .3s,border-color .3s}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:color-mix(in srgb,var(--primary) 30%,var(--line))}
.card .media{aspect-ratio:16/10}
.card .body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card h3{margin:0;font-size:20px;line-height:1.3;letter-spacing:-.015em;font-weight:750}
.card p{margin:0;color:var(--muted);font-size:15px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card .meta{margin-top:auto;padding-top:6px}

.state{text-align:center;padding:80px 20px;color:var(--muted)}
.state svg{width:40px;height:40px;color:var(--faint);margin:0 auto 14px;stroke-width:1.5}
.state h2{margin:0 0 6px;color:var(--ink);font-size:22px}
.state p{margin:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:999px;border:0;background:var(--grad);color:#fff;font-weight:700;box-shadow:0 10px 22px -12px rgba(37,99,235,.9);transition:filter .15s,transform .15s}
.btn:hover{filter:brightness(1.08)}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line);box-shadow:none}
.skel{background:linear-gradient(90deg,var(--surface-2),var(--surface-3),var(--surface-2)) 0 0/200% 100%;animation:shimmer 1.3s infinite;border-radius:10px}
@keyframes shimmer{to{background-position:-200% 0}}
.reveal{opacity:0;transform:translateY(14px);animation:rise .6s cubic-bezier(.22,1,.36,1) forwards}
@keyframes rise{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.reveal{animation:none;opacity:1;transform:none}.card:hover,.featured:hover{transform:none}}

/* Article */
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--cyan),var(--primary),var(--indigo));z-index:60;transition:width .1s linear}
.article-hero{padding:48px 0 0;background:var(--hero-glow)}
.narrow{max-width:780px;margin:0 auto}
.back{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-weight:600;font-size:15px;padding:8px 14px 8px 10px;border-radius:999px;border:1px solid var(--line);background:var(--surface);transition:all .15s}
.back:hover{color:var(--ink);border-color:var(--line-2)}
.article-hero h1{margin:22px 0 18px;font-size:clamp(32px,4.6vw,52px);line-height:1.1;letter-spacing:-.035em;font-weight:800}
.lede{margin:0 0 24px;color:var(--muted);font-size:20px;line-height:1.55}
.byline{display:flex;align-items:center;gap:14px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);flex-wrap:wrap}
.avatar{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--grad);color:#fff;font-weight:800;font-size:15px;flex:none}
.byline .who{display:grid;line-height:1.35}
.byline .who b{font-size:15.5px}
.byline .who span{color:var(--faint);font-size:14px}
.share{display:flex;gap:8px;margin-left:auto}
.share a,.share button{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);transition:all .15s}
.share a:hover,.share button:hover{color:#fff;background:var(--primary);border-color:var(--primary);transform:translateY(-2px)}
.share svg{width:17px;height:17px}
.share svg.fill{fill:currentColor;stroke:none}
.cover{margin:34px auto 0;max-width:1040px;border-radius:24px;overflow:hidden;box-shadow:var(--shadow);aspect-ratio:16/8;background:var(--surface-2)}
.cover img{width:100%;height:100%;object-fit:cover}
.prose{font-size:18.5px;line-height:1.8;color:var(--ink-2);padding:44px 0 10px}
.prose>:first-child{margin-top:0}
.prose p{margin:0 0 1.25em}
.prose h2{font-size:30px;line-height:1.25;letter-spacing:-.025em;color:var(--ink);margin:1.8em 0 .6em;font-weight:800}
.prose h3{font-size:23px;line-height:1.3;letter-spacing:-.015em;color:var(--ink);margin:1.6em 0 .5em;font-weight:750}
.prose a{color:var(--primary-ink);text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:3px;text-decoration-color:color-mix(in srgb,var(--primary) 45%,transparent)}
.prose a:hover{text-decoration-color:currentColor}
.prose strong{color:var(--ink)}
.prose ul,.prose ol{margin:0 0 1.25em;padding-left:1.35em}
.prose li{margin:.45em 0;padding-left:.2em}
.prose li::marker{color:var(--primary)}
.prose blockquote{margin:1.8em 0;padding:20px 26px;border-left:4px solid transparent;border-image:linear-gradient(var(--cyan),var(--primary)) 1;background:var(--bg-soft);border-radius:0 16px 16px 0;font-size:21px;line-height:1.6;color:var(--ink);font-weight:500}
.prose blockquote p{margin:0}
.prose figure{margin:2em 0}
.prose figure img{border-radius:16px;width:100%}
.prose figcaption{text-align:center;color:var(--faint);font-size:14.5px;margin-top:10px}
.prose hr{border:0;height:1px;background:var(--line);margin:2.6em 0}
.prose code{font:15px ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--surface-2);padding:2px 6px;border-radius:6px}
.tags{display:flex;flex-wrap:wrap;gap:8px;padding:10px 0 34px;border-bottom:1px solid var(--line)}
.tag{padding:6px 14px;border-radius:999px;background:var(--surface-2);color:var(--ink-2);font-size:14px;font-weight:600}
.tag::before{content:"#";color:var(--primary);margin-right:2px}
.more{padding:56px 0 90px}
.more-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:24px}
.more-head h2{margin:0;font-size:28px;letter-spacing:-.025em}
.more-head a{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--primary-ink)}

/* Footer */
.site-footer{border-top:1px solid var(--line);background:var(--bg-soft)}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:28px 24px;color:var(--faint);font-size:14px}
.footer-inner nav{display:flex;gap:18px;flex-wrap:wrap}
.footer-inner nav a:hover{color:var(--ink)}

/* Toast */
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,16px);opacity:0;pointer-events:none;background:var(--ink);color:var(--bg);padding:11px 18px;border-radius:999px;font-size:14.5px;font-weight:600;transition:all .2s;z-index:80}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media (max-width:980px){
  .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .featured{grid-template-columns:1fr}
  .featured .media{min-height:0;aspect-ratio:16/9}
  .featured .body{padding:28px}
}
@media (max-width:720px){
  .container{padding:0 16px}
  .header-inner{height:62px;gap:10px}
  .menu-toggle{display:grid}
  .nav{position:absolute;top:62px;left:0;right:0;flex-direction:column;gap:2px;padding:10px 16px 16px;background:var(--bg);border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none}
  .nav.open{display:flex}
  .nav a{padding:12px 14px;border-radius:12px}
  .theme-toggle{margin-left:auto}
  .hero{padding:44px 0 24px}
  .hero p{font-size:16.5px}
  .controls{flex-direction:column;align-items:stretch}
  .chips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin:0 -16px;padding:0 16px}
  .chip{flex:none}
  .search{min-width:0;width:100%}
  .controls>*{min-width:0;max-width:100%}
  .chips{max-width:calc(100% + 32px)}
  .grid{grid-template-columns:1fr;gap:18px}
  .featured .body{padding:22px}
  .article-hero{padding-top:28px}
  .lede{font-size:18px}
  .cover{border-radius:0;margin-top:24px;aspect-ratio:16/10}
  .prose{font-size:17.5px;padding-top:30px}
  .prose h2{font-size:25px}
  .share{margin-left:0;width:100%}
  .more-head{flex-direction:column;align-items:flex-start}
}