:root {
  --bg: #0a0a0a;
  --bg-soft: #111;
  --panel: #121212;
  --text: #f5f5f5;
  --muted: #9f9f9f;
  --line: #2a2a2a;
  --line-strong: #3a3a3a;
  --accent: #ef3e36;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 18%, rgba(239, 62, 54, 0.13), transparent 22rem),
    radial-gradient(circle at 92% 10%, rgba(255, 255, 255, 0.06), transparent 18rem),
    var(--bg);
  font: 16px/1.72 "Space Grotesk", "Segoe UI", Arial, sans-serif;
}

.wrap {
  width: min(1040px, calc(100% - 2.4rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: rgba(10, 10, 10, 0.84);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.status-dot {
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(239, 62, 54, 0.7);
}

.tagline {
  margin: 0.28rem 0 0.9rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.top-nav a {
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  padding: 0.34rem 0.78rem;
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
  background: #111;
  transition: 0.18s ease;
}

.top-nav a:hover,
.top-nav a.active {
  border-color: #616161;
  background: #1a1a1a;
}

.page-main {
  padding: 1.5rem 0 2rem;
}

.content-card {
  border-radius: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.015), transparent 50%), var(--panel);
  padding: clamp(1.1rem, 2.2vw, 1.8rem);
}

h1,
h2,
h3 {
  margin: 1.35rem 0 0.55rem;
  letter-spacing: 0.01em;
}

h1 {
  margin-top: 0;
  font-size: clamp(1.7rem, 3.7vw, 2.4rem);
}

h2 {
  font-size: clamp(1.2rem, 2.7vw, 1.55rem);
}

p,
ul,
ol {
  margin: 0.55rem 0 1rem;
}

a {
  color: #fff;
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 1.3rem 0;
}

img {
  max-width: 100%;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #0e0e0e;
}

code {
  font-family: "JetBrains Mono", Consolas, monospace;
  background: #171717;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.12rem 0.36rem;
}

pre code {
  display: block;
  overflow-x: auto;
  padding: 0.9rem;
}

.terminal-chip {
  display: inline-block;
  margin: 0.5rem 0 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.34rem 0.82rem;
  color: #d0d0d0;
  background: #111;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font: 600 0.75rem/1 "JetBrains Mono", Consolas, monospace;
}

.hero-typing {
  width: 100%;
  margin: 0.15rem 0 1rem;
}

.signal-grid,
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.78rem;
}

.signal-card,
.article-card {
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: var(--bg-soft);
  padding: 0.88rem;
}

.signal-card h3,
.article-card h3 {
  margin: 0 0 0.3rem;
  font-size: 1.02rem;
}

.signal-card p,
.article-card p {
  margin: 0;
  color: var(--muted);
}

.article-card {
  text-decoration: none;
  color: inherit;
  transition: border-color 0.17s ease, transform 0.17s ease;
}

.article-card:hover {
  border-color: #5a5a5a;
  transform: translateY(-1px);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 0.8rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 1rem 0 1.35rem;
}

@media (max-width: 640px) {
  .wrap {
    width: min(1040px, calc(100% - 1.2rem));
  }
}