:root{
  --bg:#ffffff;--surface:#f6f7f9;--text:#111318;--muted:#5f6675;--line:#e6e8ec;
  --accent:#1f5eff;--accent-ink:#ffffff;--chip:#eef3ff;--chip-ink:#1c4fd6;
  --radius:14px;--shadow:0 1px 2px rgba(16,24,40,.06),0 8px 24px -12px rgba(16,24,40,.18);
  --font:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;--serif:"Source Serif 4",Georgia,serif;
}
@media (prefers-color-scheme:dark){:root{--bg:#0f1115;--surface:#171a21;--text:#eef0f4;--muted:#9aa3b2;--line:#262a33;--chip:#1b2a4d;--chip-ink:#9db6ff;--shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6)}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.5;font-size:16px}
a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}
img{display:block;max-width:100%}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}.small{font-size:13px}

/* header */
.site-header{border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:0;z-index:20;backdrop-filter:saturate(180%) blur(8px)}
.header-top{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;font-size:24px}
.brand:hover{text-decoration:none}
.brand-mark{width:26px;height:26px;border-radius:8px;background:conic-gradient(from 210deg,var(--accent),#7b5cff 60%,var(--accent));box-shadow:inset 0 0 0 6px var(--bg)}
.header-meta{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:13px}
.ai-badge{display:inline-flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;letter-spacing:.08em;padding:3px 7px;border-radius:999px;background:var(--chip);color:var(--chip-ink);vertical-align:middle}
.nav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;height:44px;align-items:center;font-size:14px;font-weight:500}
.nav::-webkit-scrollbar{display:none}
.nav a{padding:6px 12px;border-radius:999px;white-space:nowrap;color:var(--muted)}
.nav a:hover{background:var(--surface);color:var(--text);text-decoration:none}
.nav a.is-active{background:var(--text);color:var(--bg)}

/* hero */
.hero{display:grid;grid-template-columns:2fr 1fr;gap:20px;margin:24px 0 8px}
.hero-main{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:var(--surface);display:flex}
.hero-media{position:relative;display:block;flex:1;min-height:360px;width:100%}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.hero-media:hover img{transform:scale(1.03)}
.hero-media:hover{text-decoration:none}
.hero-overlay{position:absolute;inset:auto 0 0 0;padding:28px;color:#fff;background:linear-gradient(to top,rgba(0,0,0,.85),rgba(0,0,0,.35) 60%,transparent)}
.hero-overlay h1{font-size:clamp(24px,3vw,36px);line-height:1.15;margin:10px 0 8px;letter-spacing:-.02em;font-weight:800;text-wrap:balance}
.hero-overlay p{margin:0 0 10px;font-size:15px;opacity:.92;max-width:60ch}
.hero-side{display:flex;flex-direction:column;gap:14px}
.chip{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--chip-ink);background:var(--chip);padding:4px 9px;border-radius:999px}
.chip:hover{text-decoration:none;filter:brightness(.95)}
.chip-light{background:rgba(255,255,255,.18);color:#fff;backdrop-filter:blur(6px)}
.meta{display:flex;flex-wrap:wrap;gap:6px;color:var(--muted);font-size:12.5px;margin-top:8px}
.meta-light{color:rgba(255,255,255,.8)}

/* cards */
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.card-media{display:block;aspect-ratio:16/9;background:var(--surface);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px}
.card h3{margin:2px 0 0;font-size:17px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.card-sm h3{font-size:15px}
.card .dek{margin:0;color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-row{flex-direction:row;flex:1}
.card-row .card-media{width:150px;flex:0 0 150px;aspect-ratio:auto}
.card-row .card-body{padding:12px 14px;justify-content:center}
.card-row h3{font-size:15px}
.card-row .dek{display:none}
.ph{display:block;width:100%;height:100%;background:linear-gradient(135deg,var(--surface),var(--line))}

/* sections */
.section{margin:36px 0}
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:14px;border-bottom:2px solid var(--text);padding-bottom:8px}
.section-head h2,.section-head h1{margin:0;font-size:20px;letter-spacing:-.02em;font-weight:800}
.page-head h1{font-size:30px}
.section-head .more{font-size:13px;font-weight:600;color:var(--muted)}
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.empty{padding:80px 0;text-align:center}

/* article */
.post{max-width:760px;margin:32px auto 0}
.post-head h1{font-size:clamp(28px,4vw,42px);line-height:1.12;letter-spacing:-.025em;font-weight:800;margin:12px 0 12px;text-wrap:balance}
.post-dek{font-size:19px;color:var(--muted);margin:0 0 16px;line-height:1.45}
.post-meta{font-size:13.5px;margin:0 0 22px}
.byline{font-weight:600;color:var(--text)}
.post-figure{margin:0 0 26px}
.post-figure img{width:100%;border-radius:var(--radius);aspect-ratio:16/9;object-fit:cover}
.post-figure figcaption{font-size:12.5px;color:var(--muted);margin-top:8px}
.post-body{font-family:var(--serif);font-size:19px;line-height:1.7}
.post-body p{margin:0 0 1.2em}
.post-body h2{font-family:var(--font);font-size:22px;letter-spacing:-.02em;margin:1.6em 0 .6em}
.post-body p:first-of-type::first-letter{font-size:3.2em;font-weight:600;float:left;line-height:.85;margin:6px 8px 0 0}
.tags{list-style:none;padding:0;margin:8px 0 24px;display:flex;flex-wrap:wrap;gap:8px}
.tags li{font-size:12.5px;color:var(--muted);background:var(--surface);padding:4px 10px;border-radius:999px}
.source-line{font-size:14px;color:var(--muted);margin:8px 0 40px;padding-top:14px;border-top:1px solid var(--line)}
.source-line a{color:var(--text);font-weight:600;text-decoration:underline}
.source-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin:8px 0 40px}
.source-box strong{display:block;margin-bottom:6px}
.source-box p{margin:0 0 12px;font-size:14px;color:var(--muted)}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);font-weight:600;font-size:14px;padding:10px 16px;border-radius:10px}
.btn:hover{text-decoration:none;filter:brightness(1.08)}

/* footer */
.site-footer{border-top:1px solid var(--line);margin-top:48px;padding:36px 0 28px;background:var(--surface)}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1.6fr;gap:28px}
.site-footer ul{list-style:none;padding:0;margin:8px 0 0;display:grid;gap:4px;font-size:14px}
.site-footer strong{font-size:14px}
.copyright{margin-top:28px;padding-top:16px;border-top:1px solid var(--line)}

@media (max-width:960px){.hero{grid-template-columns:1fr}.hero-media{min-height:280px}.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr}}
@media (max-width:600px){.container{padding:0 16px}.grid-3,.grid-4{grid-template-columns:1fr}.hero-media{min-height:240px;aspect-ratio:4/3}.hero-overlay{padding:18px}.card-row .card-media{width:120px;flex-basis:120px}.post-body{font-size:17.5px}.header-date{display:none}}