:root{
  --ink:#0a0a0a;
  --ink-soft:#4a4a4a;
  --line:#e6e6e6;
  --bg:#ffffff;
  --bg-soft:#f6f6f7;
  --accent:#0a0a0a;
  --radius:14px;
  --maxw:920px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased;
  display:flex;flex-direction:column;min-height:100vh;
}
a{color:var(--ink);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* header */
.site-header{background:var(--ink);color:#fff;position:sticky;top:0;z-index:20}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{color:#fff;font-weight:800;font-size:22px;letter-spacing:.02em;display:flex;align-items:baseline;gap:10px;flex-shrink:0}
.brand:hover{text-decoration:none;opacity:.9}
.brand-sub{font-weight:500;font-size:13px;opacity:.7;letter-spacing:.04em;text-transform:uppercase}
.header-search{margin-left:auto;flex:1;max-width:360px}
.header-search input{
  width:100%;height:40px;border:0;border-radius:999px;padding:0 16px;
  background:rgba(255,255,255,.14);color:#fff;font-size:15px;outline:none;font-family:var(--font);
}
.header-search input::placeholder{color:rgba(255,255,255,.6)}
.header-search input:focus{background:rgba(255,255,255,.22)}

/* hero */
.hero{text-align:center;padding:64px 0 40px}
.hero h1{font-size:40px;line-height:1.15;margin:0 0 10px;letter-spacing:-.02em}
.hero-sub{color:var(--ink-soft);font-size:18px;margin:0 auto 28px;max-width:560px}
.hero-search{display:flex;gap:10px;max-width:560px;margin:0 auto}
.hero-search input{
  flex:1;height:52px;border:1.5px solid var(--line);border-radius:999px;padding:0 22px;
  font-size:16px;outline:none;font-family:var(--font);
}
.hero-search input:focus{border-color:var(--ink)}
.hero-search button{
  height:52px;padding:0 26px;border:0;border-radius:999px;background:var(--ink);color:#fff;
  font-size:16px;font-weight:600;cursor:pointer;font-family:var(--font);
}
.hero-search button:hover{opacity:.88}
.inline-search{margin:0 0 30px}

/* category grid */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;padding:8px 0 48px}
.cat-card{
  border:1px solid var(--line);border-radius:var(--radius);padding:22px 22px;background:#fff;
  transition:border-color .15s ease,transform .15s ease,box-shadow .15s ease;display:block;
}
.cat-card:hover{text-decoration:none;border-color:var(--ink);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.06)}
.cat-card h3{margin:0 0 6px;font-size:19px}
.cat-card p{margin:0;color:var(--ink-soft);font-size:14px}

/* breadcrumb */
.breadcrumb{font-size:14px;color:var(--ink-soft);padding:20px 0 4px}
.breadcrumb a{color:var(--ink-soft)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb .sep{margin:0 8px;opacity:.5}
.breadcrumb [aria-current]{color:var(--ink);font-weight:500}

/* page head */
.page-head{padding:16px 0 8px}
.page-head h1{font-size:32px;line-height:1.2;margin:0 0 8px;letter-spacing:-.01em}
.page-desc{color:var(--ink-soft);margin:0}

/* section blocks + article lists */
.sec-block{margin:24px 0}
.sec-title{font-size:15px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-soft);margin:0 0 10px}
.article-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.article-list li{border-bottom:1px solid var(--line)}
.article-list a{display:block;padding:15px 6px;font-size:17px}
.article-list a:hover{text-decoration:none;background:var(--bg-soft);padding-left:14px;transition:padding .12s ease}

/* article */
.article{padding:8px 0 8px}
.article-body{font-size:17px;color:#151515;max-width:100%}
.article-body p{margin:0 0 16px}
.article-body h2{font-size:22px;margin:32px 0 12px}
.article-body h3{font-size:19px;margin:26px 0 10px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:26px}
.article-body li{margin:6px 0}
.article-body a{text-decoration:underline;text-underline-offset:2px}
.article-body img{max-width:100%;height:auto;border-radius:8px}
.article-body table{border-collapse:collapse;width:100%;margin:16px 0;display:block;overflow-x:auto}
.article-body td,.article-body th{border:1px solid var(--line);padding:8px 10px}
.article-body iframe{max-width:100%}
.article-foot{margin:36px 0 8px;padding-top:18px;border-top:1px solid var(--line);color:var(--ink-soft);font-size:15px}

/* related */
.related{margin:36px 0;padding:22px;background:var(--bg-soft);border-radius:var(--radius)}
.related h2{margin:0 0 12px;font-size:16px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft)}
.related ul{margin:0;padding-left:20px}
.related li{margin:6px 0}
.related a{text-decoration:underline;text-underline-offset:2px}

/* contact card */
.contact-card{
  margin:48px 0;padding:32px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--bg-soft);text-align:center;
}
.contact-card h2{margin:0 0 8px;font-size:22px}
.contact-card p{margin:0 auto 18px;color:var(--ink-soft);max-width:460px}
.btn{
  display:inline-block;background:var(--ink);color:#fff;border-radius:999px;
  padding:13px 28px;font-weight:600;font-size:16px;
}
.btn:hover{text-decoration:none;opacity:.88}

/* search results */
.search-results{margin:8px 0 40px}
.search-results .result{border-bottom:1px solid var(--line);padding:18px 0}
.search-results .result h3{margin:0 0 4px;font-size:19px}
.search-results .result .cat{font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft);margin-bottom:6px}
.search-results .result p{margin:0;color:var(--ink-soft);font-size:15px}
.search-results .result mark{background:#ffef8f;padding:0 2px;border-radius:2px}
.search-empty{color:var(--ink-soft);padding:24px 0}

/* footer */
.site-footer{margin-top:auto;background:var(--ink);color:#fff}
.footer-inner{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;padding:40px 20px 24px}
.footer-brand{font-weight:800;font-size:20px;letter-spacing:.02em}
.footer-note{margin:6px 0 0;color:rgba(255,255,255,.6);font-size:14px}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{color:rgba(255,255,255,.82);font-size:15px}
.footer-links a:hover{color:#fff}
.footer-legal{color:rgba(255,255,255,.45);font-size:13px;padding-bottom:28px;border-top:1px solid rgba(255,255,255,.12);padding-top:18px}

@media (max-width:640px){
  .hero h1{font-size:32px}
  .hero{padding:40px 0 28px}
  .header-search{max-width:none}
  .brand-sub{display:none}
  .hero-search{flex-direction:column}
  .hero-search button{width:100%}
  .page-head h1{font-size:26px}
}