:root{
  --bg:#faf7f2; --surface:#ffffff; --ink:#1c1b19; --muted:#5f5b54; --line:#e7e1d7;
  --accent:#e2621b; --accent-ink:#ffffff; --deep:#1f2a37;
  --radius:14px; --max:1080px;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#14161a; --surface:#1c1f25; --ink:#ece8e1; --muted:#a39d93; --line:#2c3038; --deep:#0e1116}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent)}
a:hover{text-decoration-thickness:2px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* header */
.site-header{border-bottom:1px solid var(--line);background:var(--surface)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em;color:var(--ink);text-decoration:none;font-size:1.1rem}
.logo span.ball{width:26px;height:26px;border-radius:50%;background:var(--accent);position:relative;flex:none;box-shadow:inset 0 0 0 2px rgba(0,0,0,.15)}
.logo span.ball::before,.logo span.ball::after{content:"";position:absolute;inset:0;border-radius:50%;border:2px solid rgba(0,0,0,.35)}
.logo span.ball::before{clip-path:inset(0 46% 0 46%)}
.logo span.ball::after{clip-path:inset(46% 0 46% 0)}
nav ul{list-style:none;margin:0;padding:0;display:flex;gap:18px;flex-wrap:wrap}
nav a{color:var(--muted);text-decoration:none;font-weight:600;font-size:.95rem}
nav a:hover,nav a[aria-current="page"]{color:var(--ink)}

/* hero */
.hero{background:var(--deep);color:#f5f1ea}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;padding-top:56px;padding-bottom:56px}
.hero h1{font-size:clamp(2.1rem,5vw,3.3rem);line-height:1.08;margin:0 0 14px;letter-spacing:-.02em}
.hero p.lead{font-size:1.15rem;color:#d6d0c6;margin:0 0 24px;max-width:36ch}
.kicker{text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:700;color:var(--accent);margin:0 0 10px}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);padding:12px 20px;border-radius:999px;text-decoration:none;font-weight:700}
.btn.ghost{background:transparent;color:#f5f1ea;border:1.5px solid #5a6472;margin-left:8px}
.hero img{border-radius:var(--radius)}

/* sections */
section{padding:56px 0}
h2{font-size:1.75rem;line-height:1.2;margin:0 0 18px;letter-spacing:-.01em}
h3{font-size:1.2rem;line-height:1.3;margin:0 0 8px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:22px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.card .body{padding:18px 20px 22px}
.card a.title{color:var(--ink);text-decoration:none}
.card a.title:hover{color:var(--accent)}
.card p{margin:0;color:var(--muted);font-size:.95rem}
.meta{font-size:.85rem;color:var(--muted);margin-bottom:6px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.facts{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.facts li{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:12px 16px}
.facts b{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}

/* article */
.article{max-width:720px;margin:0 auto;padding:48px 20px 64px}
.article h1{font-size:clamp(1.9rem,4.5vw,2.6rem);line-height:1.15;margin:0 0 12px;letter-spacing:-.02em}
.article .hero-img{margin:24px 0 28px;border-radius:var(--radius)}
.article h2{font-size:1.4rem;margin-top:36px}
.article blockquote{margin:28px 0;padding:16px 20px;border-left:4px solid var(--accent);background:var(--surface);border-radius:0 10px 10px 0;font-style:italic}
.tip{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:24px 0}
.tip b{color:var(--accent)}
.author-box{display:flex;gap:16px;align-items:center;border-top:1px solid var(--line);margin-top:44px;padding-top:24px}
.author-box .avatar{width:56px;height:56px;border-radius:50%;background:var(--accent);flex:none;display:grid;place-items:center;color:#fff;font-weight:800}
.breadcrumbs{font-size:.85rem;color:var(--muted);margin-bottom:18px}
.breadcrumbs a{color:var(--muted)}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:32px 0;color:var(--muted);font-size:.9rem;background:var(--surface)}
.site-footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.site-footer a{color:var(--muted)}

@media (max-width:820px){
  .hero .wrap,.split{grid-template-columns:1fr}
  .hero .wrap{padding-top:36px;padding-bottom:40px}
  .btn.ghost{margin:10px 0 0}
}