:root {
  --bg: #07111f;
  --bg-soft: rgba(255,255,255,0.05);
  --card: rgba(255,255,255,0.08);
  --line: rgba(255,255,255,0.12);
  --text: #e5eefb;
  --muted: #a7b4c8;
  --brand: #38bdf8;
  --brand-2: #22c55e;
  --brand-3: #a78bfa;
  --shadow: 0 20px 50px rgba(0,0,0,0.35);
  --radius: 22px;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(56,189,248,0.18), transparent 30%),
    radial-gradient(circle at left center, rgba(34,197,94,0.12), transparent 25%),
    linear-gradient(180deg, #08121f 0%, #0b1727 45%, #0d1321 100%);
  color: var(--text);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }
.muted { color: var(--muted); }
.topbar {
  position: sticky; top: 0; z-index: 1000; backdrop-filter: blur(16px);
  background: rgba(7,17,31,0.78); border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 0; }
.brand { display: flex; align-items: center; gap: 0.85rem; font-weight: 800; letter-spacing: 0.02em; }
.brand-mark {
  width: 42px; height: 42px; display: grid; place-items: center; border-radius: 14px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #06111b; font-weight: 900; box-shadow: var(--shadow);
}
.nav-links { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; }
.nav-links a { color: var(--muted); font-weight: 600; padding: 0.55rem 0.8rem; border-radius: 999px; transition: 0.2s ease; }
.nav-links a:hover, .nav-links a:focus, .nav-links a.active { background: var(--bg-soft); color: var(--text); }
.cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; min-height: 48px;
  padding: 0.9rem 1.2rem; border-radius: 999px; border: 1px solid transparent; font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease; cursor: pointer;
}
.cta:hover { transform: translateY(-2px); }
.cta-primary { color: #05111f; background: linear-gradient(135deg, #67e8f9, #22c55e); box-shadow: var(--shadow); }
.cta-secondary { color: var(--text); background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.12); }
.cta-ghost { color: #d8e6f8; background: transparent; border-color: rgba(255,255,255,0.14); }
.hero { padding: 5rem 0 3.5rem; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 2rem; align-items: center; }
.eyebrow {
  display: inline-flex; gap: 0.5rem; align-items: center; padding: 0.5rem 0.9rem; border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px; background: rgba(255,255,255,0.05); color: #c8d6e8; font-size: 0.92rem; font-weight: 700;
}
h1, h2, h3, h4 { line-height: 1.1; margin: 0 0 1rem; }
h1 { font-size: clamp(2.4rem, 5vw, 4.6rem); letter-spacing: -0.04em; margin-top: 1rem; }
h2 { font-size: clamp(1.9rem, 3vw, 2.8rem); letter-spacing: -0.03em; }
.hero p, .lead { color: var(--muted); font-size: 1.08rem; max-width: 68ch; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1.6rem; }
.hero-card, .card, .article, .feature-card, .testimonial, .faq-item, .contact-card, .topic-card, .mini-card, .step-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.hero-card, .card, .feature-card, .topic-card, .mini-card, .step-card, .testimonial, .faq-item, .contact-card { padding: 1.35rem; }
.hero-panel {
  border-radius: calc(var(--radius) - 6px); overflow: hidden; min-height: 460px; position: relative;
  background: linear-gradient(180deg, rgba(6,17,31,0.2), rgba(6,17,31,0.85)), linear-gradient(135deg, rgba(56,189,248,0.3), rgba(34,197,94,0.15));
  display: flex; align-items: end; padding: 1.5rem;
}
.hero-panel-content { max-width: 26rem; }
.hero-panel h2 { font-size: 1.55rem; }
.hero-panel p { color: #d5e2f2; margin-bottom: 0; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem; }
.stat { padding: 1rem 1.1rem; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: 18px; }
.stat strong { display: block; font-size: 1.45rem; margin-bottom: 0.2rem; }
section { padding: 2.2rem 0; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 1rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.section-head p { color: var(--muted); margin: 0; max-width: 62ch; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.article { overflow: hidden; display: flex; flex-direction: column; padding: 0; }
.article-image { aspect-ratio: 16 / 10; background: linear-gradient(135deg, rgba(56,189,248,0.4), rgba(167,139,250,0.25)); }
.article-body { padding: 1.2rem; }
.pill {
  display: inline-flex; font-size: 0.8rem; font-weight: 700; color: #0c1b2d; background: linear-gradient(135deg, #bae6fd, #86efac);
  padding: 0.35rem 0.65rem; border-radius: 999px; margin-bottom: 0.8rem;
}
.alt-pill {
  display: inline-flex; font-size: 0.8rem; font-weight: 700; color: #f3f5ff; background: rgba(167, 139, 250, 0.18);
  border: 1px solid rgba(167, 139, 250, 0.22); padding: 0.35rem 0.65rem; border-radius: 999px; margin-bottom: 0.8rem;
}
.checklist { display: grid; gap: 0.75rem; padding: 0; list-style: none; margin: 0; }
.checklist li { display: flex; gap: 0.8rem; align-items: start; color: #dbe8f8; }
.check {
  width: 22px; height: 22px; border-radius: 999px; flex: 0 0 22px; display: grid; place-items: center;
  background: rgba(34,197,94,0.16); border: 1px solid rgba(34,197,94,0.25); color: #8ef0b0; font-size: 0.9rem; margin-top: 2px;
}
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.panel-band {
  padding: 1.4rem; border: 1px solid var(--line); background: linear-gradient(135deg, rgba(56,189,248,0.09), rgba(34,197,94,0.08));
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.feature-card h3, .topic-card h3, .mini-card h3, .step-card h3, .card h3, .article h3, .testimonial h3 { font-size: 1.22rem; }
.article-link, .text-link { color: #bcecff; font-weight: 700; }
.category-list { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1rem; }
.category-list a {
  padding: 0.6rem 0.85rem; border-radius: 999px; background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.09); color: #d8e6f8; font-weight: 600;
}
.contact-wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 1.2rem; }
form { display: grid; gap: 1rem; margin-top: 1rem; }
label { display: block; font-weight: 700; margin-bottom: 0.5rem; }
input, textarea, select {
  width: 100%; border-radius: 16px; border: 1px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.05);
  color: var(--text); padding: 0.95rem 1rem; font: inherit; outline: none;
}
input::placeholder, textarea::placeholder { color: #9fb0c4; }
textarea { min-height: 140px; resize: vertical; }
.article-layout { display: grid; grid-template-columns: 280px 1fr; gap: 1.25rem; align-items: start; }
.toc { position: sticky; top: 90px; }
.toc ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.7rem; }
.toc a { color: #d8e6f8; font-weight: 600; }
.article-content .card { margin-bottom: 1rem; }
.footer-grid { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-top: 1rem; border-top: 1px solid rgba(255,255,255,0.08); }
footer { padding: 2rem 0 3rem; color: var(--muted); }
@media (max-width: 1080px) {
  .hero-grid, .grid-4, .contact-wrap, .split, .grid-3, .grid-2, .article-layout { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .toc { position: static; }
}
@media (max-width: 720px) {
  .nav { align-items: start; flex-direction: column; }
  .nav-links { width: 100%; }
  h1 { font-size: 2.35rem; }
  .hero { padding-top: 3rem; }
}