:root {
  --bg: #0f1115;
  --surface: #171a21;
  --surface-2: #1e222b;
  --text: #e6e8ec;
  --muted: #9aa3b2;
  --accent: #4f8cff;
  --accent-2: #22c55e;
  --border: #262b36;
  --maxw: 760px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.7 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* Header */
header.site {
  border-bottom: 1px solid var(--border);
  background: rgba(15,17,21,0.9);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 10;
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px;
}
.brand { font-weight: 700; font-size: 19px; letter-spacing: -0.02em; color: var(--text); }
.brand span { color: var(--accent); }
nav.site a { color: var(--muted); margin-left: 22px; font-size: 15px; }
nav.site a:hover { color: var(--text); text-decoration: none; }

/* Hero */
.hero { padding: 64px 0 40px; text-align: center; }
.hero h1 { font-size: 40px; line-height: 1.15; margin: 0 0 16px; letter-spacing: -0.03em; }
.hero p { color: var(--muted); font-size: 19px; max-width: 560px; margin: 0 auto; }

/* Article list */
.list { padding: 20px 0 80px; }
.list h2 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 40px 0 16px; }
.card {
  display: block; padding: 20px 22px; margin-bottom: 14px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-1px); }
.card h3 { margin: 0 0 6px; font-size: 20px; color: var(--text); letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .meta { margin-top: 10px; font-size: 13px; color: var(--muted); }
.tag { display: inline-block; background: var(--surface-2); border: 1px solid var(--border); color: var(--muted); font-size: 12px; padding: 2px 9px; border-radius: 999px; margin-right: 6px; }

/* Article */
article.post { padding: 48px 0 80px; }
article.post .kicker { color: var(--accent); font-weight: 600; font-size: 14px; text-transform: uppercase; letter-spacing: 0.06em; }
article.post h1 { font-size: 34px; line-height: 1.2; margin: 10px 0 12px; letter-spacing: -0.02em; }
article.post .byline { color: var(--muted); font-size: 14px; margin-bottom: 36px; }
article.post h2 { font-size: 25px; margin: 40px 0 12px; letter-spacing: -0.01em; }
article.post h3 { font-size: 20px; margin: 28px 0 10px; }
article.post p { margin: 0 0 18px; }
article.post ul, article.post ol { margin: 0 0 18px; padding-left: 24px; }
article.post li { margin-bottom: 8px; }
article.post img { max-width: 100%; border-radius: 10px; border: 1px solid var(--border); }

pre {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px 18px; overflow-x: auto; font-size: 14px; line-height: 1.5;
}
code { font-family: "JetBrains Mono", "SF Mono", Consolas, monospace; font-size: 0.9em; }
p code, li code { background: var(--surface-2); padding: 2px 6px; border-radius: 5px; color: #d6deff; }

blockquote {
  margin: 24px 0; padding: 14px 18px; border-left: 3px solid var(--accent);
  background: var(--surface); border-radius: 0 10px 10px 0; color: var(--muted);
}

.note {
  background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--accent-2);
  border-radius: 0 10px 10px 0; padding: 14px 18px; margin: 24px 0; font-size: 15px;
}
.note strong { color: var(--accent-2); }

/* Affiliate box */
.aff {
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border); border-radius: 12px; padding: 20px 22px; margin: 32px 0;
}
.aff .lbl { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.aff h4 { margin: 6px 0 8px; font-size: 18px; }
.aff p { margin: 0 0 14px; color: var(--muted); font-size: 15px; }
.btn {
  display: inline-block; background: var(--accent); color: #fff; font-weight: 600;
  padding: 10px 18px; border-radius: 9px; font-size: 15px;
}
.btn:hover { text-decoration: none; opacity: 0.92; }
.disclosure { font-size: 12px; color: var(--muted); margin-top: 10px; }

/* Footer */
footer.site { border-top: 1px solid var(--border); padding: 32px 0; color: var(--muted); font-size: 14px; }
footer.site .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
footer.site a { color: var(--muted); }

@media (max-width: 600px) {
  .hero h1 { font-size: 30px; }
  article.post h1 { font-size: 27px; }
}