:root {
  --bg: #06111f;
  --bg-soft: #0b1b2e;
  --panel: #0f2238;
  --panel-2: #122844;
  --border: rgba(255,255,255,0.1);
  --text: #edf3fb;
  --muted: #b8c7da;
  --accent: #00c8d4;
  --accent-2: #00909a;
  --success: #86efac;
  --warn: #fcd34d;
  --danger: #fca5a5;
  --shadow: 0 18px 45px rgba(0,0,0,0.28);
  --radius: 18px;
  --radius-sm: 12px;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  background:
    radial-gradient(circle at top right, rgba(0,200,212,0.12), transparent 30%),
    linear-gradient(180deg, #06111f 0%, #081624 100%);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

img,
picture,
video,
svg,
canvas {
  max-width: 100%;
  height: auto;
}

iframe {
  max-width: 100%;
}

pre,
code,
.code-block {
  max-width: 100%;
}

table {
  width: 100%;
  max-width: 100%;
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
}

.shell {
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px;
}

.site-header {
  background: linear-gradient(180deg, #030b17 0%, #06111f 100%);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 8px 30px rgba(0,0,0,0.22);
}

.site-header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 24px;
}

.site-title {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.site-title a {
  color: var(--text);
  text-decoration: none;
}

.site-title a:hover {
  text-decoration: underline;
}

.site-subtitle {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 24px;
  align-items: stretch;
  margin-top: 28px;
}

.card {
  background: linear-gradient(180deg, rgba(18,40,68,0.92), rgba(11,27,46,0.94));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-main,
.hero-side,
.section {
  padding: 24px 26px;
}

.eyebrow {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(0,200,212,0.14);
  color: var(--accent-2);
  border: 1px solid rgba(147,197,253,0.24);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero h2 {
  margin: 16px 0 12px;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero p,
.section p,
.section li {
  color: var(--muted);
}

.hero-image {
  margin-top: 20px;
  width: 100%;
  max-height: 340px;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.quick-list,
.checklist {
  padding-left: 18px;
  margin: 14px 0 0;
}

.layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 24px;
  margin-top: 26px;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 20px;
  padding: 20px;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}

.nav a {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255,255,255,0.03);
  border: 1px solid transparent;
  color: var(--text);
}

.nav a:hover {
  background: rgba(0,200,212,0.1);
  border-color: rgba(147,197,253,0.2);
  text-decoration: none;
}

.content {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.grid-2,
.grid-3 {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.mini-card {
  padding: 18px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
}

.mini-card h4 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.mini-card ul {
  padding-left: 18px;
  margin: 10px 0 0;
}

.code-block {
  background: #07101b;
  border: 1px solid rgba(255,255,255,0.08);
  color: #dbeafe;
  padding: 16px;
  border-radius: 12px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  margin-top: 14px;
}

.step-list {
  counter-reset: step;
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.step {
  position: relative;
  padding: 16px 16px 16px 58px;
  border-radius: 14px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 16px;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: rgba(0,200,212,0.16);
  border: 1px solid rgba(147,197,253,0.25);
  color: var(--accent-2);
  font-weight: 800;
}

.label {
  display: inline-block;
  padding: 4px 9px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.ok { background: rgba(134,239,172,0.12); color: var(--success); }
.warn { background: rgba(252,211,77,0.12); color: var(--warn); }
.risk { background: rgba(252,165,165,0.12); color: var(--danger); }

.footer {
  color: var(--muted);
  text-align: center;
  padding: 30px 0 20px;
  font-size: 0.95rem;
}

@media (max-width: 980px) {
  .hero,
  .layout,
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}

@media (max-width: 760px) {
  .shell,
  .site-header-inner {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-main,
  .hero-side,
  .section,
  .sidebar,
  .mini-card {
    padding: 18px;
  }

  .hero {
    gap: 18px;
    margin-top: 20px;
  }

  .layout {
    gap: 18px;
    margin-top: 20px;
  }

  .hero h2 {
    font-size: clamp(1.6rem, 8vw, 2.2rem);
  }

  .site-subtitle {
    font-size: 0.95rem;
  }

  .step {
    padding: 16px 14px 16px 52px;
  }
}