:root {
  --bg: #0b0f14;
  --bg-2: #111821;
  --card: #151d28;
  --line: #233042;
  --text: #e8eef5;
  --muted: #93a1b3;
  --accent: #22c55e;
  --accent-2: #38bdf8;
  --radius: 14px;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 16px/1.7 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(11, 15, 20, .85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.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; font-size: 22px; color: var(--text); letter-spacing: -.02em; }
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #06210f; font-size: 18px;
}
.logo span { color: var(--accent); }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a { color: var(--muted); padding: 8px 12px; border-radius: 10px; font-size: 15px; font-weight: 500; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: var(--card); text-decoration: none; }

/* Hero */
.hero { padding: 72px 0 48px; background: radial-gradient(800px 400px at 15% 0%, rgba(34, 197, 94, .18), transparent 60%), radial-gradient(700px 400px at 95% 10%, rgba(56, 189, 248, .14), transparent 60%); }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
.hero h1 { font-size: clamp(32px, 5vw, 54px); line-height: 1.1; margin: 0 0 16px; letter-spacing: -.03em; max-width: 760px; }
.hero p { font-size: 18px; color: var(--muted); max-width: 620px; margin: 0 0 28px; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 12px; font-weight: 600; background: var(--accent); color: #06210f; }
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line); margin-left: 8px; }

/* Sections */
section { padding: 40px 0; }
.section-title { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.section-title h2 { margin: 0; font-size: 26px; letter-spacing: -.02em; }
.section-title p { margin: 0; color: var(--muted); }

.cats { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.cat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px;
  color: var(--text); transition: border-color .15s, transform .15s;
}
.cat:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.cat .ico { font-size: 26px; }
.cat h3 { margin: 8px 0 4px; font-size: 17px; }
.cat p { margin: 0; font-size: 14px; color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.card-cover { aspect-ratio: 16 / 9; display: grid; place-items: center; font-size: 46px; background: linear-gradient(135deg, #12351f, #0e2b3a); }
.card-body { padding: 16px 18px 20px; }
.tag { display: inline-block; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--accent-2); margin-bottom: 6px; }
.card h3 { margin: 0 0 8px; font-size: 19px; line-height: 1.35; }
.card h3 a { color: var(--text); }
.card p { margin: 0 0 12px; color: var(--muted); font-size: 15px; }
.meta { color: var(--muted); font-size: 13px; }

/* Article */
.breadcrumb { font-size: 14px; color: var(--muted); padding-top: 28px; }
.breadcrumb a { color: var(--muted); }
.article { max-width: 760px; margin: 0 auto; padding: 8px 0 48px; }
.article h1 { font-size: clamp(28px, 4.2vw, 42px); line-height: 1.15; letter-spacing: -.025em; margin: 10px 0 14px; }
.article .lead { font-size: 19px; color: var(--muted); }
.article h2 { font-size: 26px; margin: 40px 0 10px; letter-spacing: -.015em; }
.article h3 { font-size: 20px; margin: 28px 0 8px; }
.article ul, .article ol { padding-left: 22px; }
.article li { margin: 6px 0; }
.toc { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin: 24px 0; }
.toc strong { display: block; margin-bottom: 6px; }
.toc ol { margin: 0; }
.note { border-left: 4px solid var(--accent); background: var(--bg-2); padding: 14px 18px; border-radius: 0 12px 12px 0; margin: 22px 0; }
table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }

/* Static pages */
.page { max-width: 760px; margin: 0 auto; padding: 32px 0 56px; }
.page h1 { font-size: clamp(30px, 4.5vw, 44px); letter-spacing: -.025em; margin: 8px 0 12px; }
.page h2 { font-size: 22px; margin: 32px 0 8px; }
.contact-box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin: 22px 0; }
.contact-box a { font-size: 18px; font-weight: 600; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; color: var(--muted); font-size: 14px; margin-top: 24px; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer nav a { color: var(--muted); margin-right: 16px; }

@media (max-width: 600px) {
  .hero { padding: 48px 0 32px; }
  .btn-ghost { margin: 10px 0 0; }
  .site-header .wrap { padding-top: 10px; padding-bottom: 10px; }
  .grid { grid-template-columns: 1fr; }
}