:root {
  --bg: #0a0f1a;
  --surface: #121a2b;
  --card: #161f33;
  --text: #e8edf5;
  --muted: #94a3b8;
  --accent: #22c55e;
  --accent-dim: #16a34a;
  --gold: #fbbf24;
  --border: rgba(148, 163, 184, 0.15);
  --radius: 12px;
  --font: system-ui, "Segoe UI", Roboto, "Noto Sans", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  background-image: radial-gradient(ellipse 120% 80% at 50% -20%, rgba(34, 197, 94, 0.12), transparent);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #4ade80;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: #000;
  font-weight: 600;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

.wrap {
  width: min(1100px, 92vw);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 15, 26, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
}

.nav-main {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}

.nav-main a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-main a:hover,
.nav-main a[aria-current="page"] {
  color: var(--text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #052e16;
}

.btn-primary:hover {
  transform: translateY(-1px);
  color: #052e16;
}

.hero {
  padding: 2.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  line-height:1.2;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.hero-lead {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.hero-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.hero-card img {
  border-radius: 8px;
  width: 100%;
}

.section {
  padding: 2.5rem 0;
}

.section h2 {
  font-size: 1.5rem;
  margin: 0 0 1rem;
}

.card-grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .card-grid.three {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: border-color 0.2s;
}

.card:hover {
  border-color: rgba(34, 197, 94, 0.35);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.article-body h1 {
  font-size: clamp(1.6rem, 3.5vw, 2rem);
  line-height: 1.25;
  margin: 0 0 0.75rem;
}

.article-meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.article-body h2 {
  font-size: 1.35rem;
  margin: 2rem 0 0.75rem;
}

.article-body h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.5rem;
}

.article-body p {
  margin: 0 0 1rem;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1rem;
  padding-left: 1.35rem;
}

.article-body li {
  margin-bottom: 0.35rem;
}

.figure {
  margin: 1.5rem 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  overflow: hidden;
}

.figure img {
  border-radius: 8px;
}

.figure figcaption {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.5rem;
}

.callout {
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.callout strong {
  color: var(--gold);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.75rem;
}

.footer-links a {
  color: var(--muted);
}

.breadcrumb {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: var(--muted);
}