:root {
  --bg: #0f1419;
  --panel: #171d24;
  --panel-2: #1f2730;
  --text: #e8edf2;
  --muted: #9aa7b5;
  --accent: #f0b429;
  --accent-2: #37c978;
  --border: #2a3440;
  --code-bg: #10161d;
  --danger: #ff6b6b;
  --sidebar-width: 280px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans Myanmar", "Segoe UI", system-ui, sans-serif;
  line-height: 1.65;
}

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

.layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 24px 18px;
}

.brand {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.brand small {
  display: block;
  color: var(--muted);
  font-weight: 400;
  font-size: 0.85rem;
}

.nav-group { margin-top: 22px; }
.nav-group h4 {
  margin: 0 0 8px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.nav-group a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--text);
  margin-bottom: 4px;
}
.nav-group a.active,
.nav-group a:hover {
  background: var(--panel-2);
  text-decoration: none;
}

.content {
  padding: 32px 40px 80px;
  max-width: 980px;
}

.hero {
  background: linear-gradient(135deg, rgba(240,180,41,0.12), rgba(55,201,120,0.08));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 30px;
  margin-bottom: 28px;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: 2rem;
}

.hero p { margin: 0; color: var(--muted); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
}

.card h3 { margin: 0 0 8px; font-size: 1rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; }

h2 {
  margin-top: 36px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

h3 { margin-top: 24px; }

p, li { color: #d5dde6; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
  font-size: 0.92rem;
}

th, td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th { background: var(--panel-2); }

pre, code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  overflow: auto;
  font-size: 0.86rem;
}

code {
  background: rgba(255,255,255,0.06);
  padding: 2px 6px;
  border-radius: 6px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.badge-get { background: rgba(55,201,120,0.18); color: var(--accent-2); }
.badge-post { background: rgba(240,180,41,0.18); color: var(--accent); }

.note {
  background: rgba(240,180,41,0.08);
  border-left: 4px solid var(--accent);
  padding: 12px 14px;
  border-radius: 8px;
  margin: 16px 0;
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
}

.steps li {
  counter-increment: step;
  margin: 0 0 14px;
  padding-left: 42px;
  position: relative;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #111;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.sign-tool {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  margin-top: 20px;
}

.sign-tool textarea,
.sign-tool input,
.sign-tool select {
  width: 100%;
  background: var(--code-bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  margin: 8px 0 12px;
}

.sign-tool button {
  background: var(--accent);
  color: #111;
  border: 0;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 700;
  cursor: pointer;
}

.footer {
  margin-top: 40px;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
  .content { padding: 24px 18px 60px; }
}