:root {
  color-scheme: light;
  --bg: #f8fafc;
  --panel: #ffffff;
  --panel-muted: #f1f5f9;
  --text: #0f172a;
  --muted: #475569;
  --border: #cbd5e1;
  --border-strong: #94a3b8;
  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --success: #047857;
  --warning: #b45309;
  --danger: #b91c1c;
  --code: #0f172a;
  --code-bg: #e2e8f0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  color: var(--text);
  background: linear-gradient(180deg, #e0f2fe 0, var(--bg) 280px);
  line-height: 1.55;
}

a { color: var(--accent); }
a:hover { color: var(--accent-strong); }

.site-header {
  border-bottom: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand small {
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.42rem 0.72rem;
  font-weight: 650;
  font-size: 0.93rem;
}

.nav a[aria-current="page"],
.nav a:hover {
  color: var(--accent-strong);
  border-color: #bfdbfe;
  background: #eff6ff;
}

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.hero {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.hero h1 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

.hero p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.grid--wide {
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
}

.card {
  background: var(--panel);
  border: 1px solid rgba(148, 163, 184, 0.55);
  border-radius: 18px;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.06);
  padding: 1rem;
}

.card h2,
.card h3 {
  margin-top: 0;
  letter-spacing: -0.03em;
}

.card p:last-child { margin-bottom: 0; }

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

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.8rem 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-muted);
  color: var(--muted);
  padding: 0.25rem 0.58rem;
  font-size: 0.85rem;
  font-weight: 700;
}

.badge--success { color: var(--success); border-color: #86efac; background: #f0fdf4; }
.badge--warning { color: var(--warning); border-color: #fcd34d; background: #fffbeb; }
.badge--danger { color: var(--danger); border-color: #fecaca; background: #fef2f2; }

button,
.button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: 1px solid var(--accent);
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  padding: 0.62rem 0.9rem;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.18);
}

button:hover,
.button:hover {
  background: var(--accent-strong);
  color: #fff;
}

button.secondary,
.button.secondary {
  color: var(--accent-strong);
  background: #eff6ff;
  box-shadow: none;
}

button.ghost,
.button.ghost {
  color: var(--muted);
  border-color: var(--border);
  background: #fff;
  box-shadow: none;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
}

label,
legend {
  font-weight: 750;
}

fieldset {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.8rem;
  margin: 0;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.62rem 0.72rem;
  color: var(--text);
  background: #fff;
  font: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.88rem;
}

.checkbox-list {
  display: grid;
  gap: 0.4rem;
  margin-top: 0.55rem;
}

.checkbox-list label,
.inline-check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 650;
  color: var(--muted);
}

.checkbox-list input,
.inline-check input {
  width: auto;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin-top: 1rem;
}

pre,
.code-block {
  overflow: auto;
  max-height: 560px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--code-bg);
  color: var(--code);
  padding: 0.85rem;
  font-size: 0.85rem;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.6rem;
}

.panel-header h2,
.panel-header h3 { margin: 0; }

.ad-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  align-items: start;
}

.ad-slot {
  border: 1px dashed var(--border-strong);
  background: #f8fafc;
  border-radius: 16px;
  padding: 0.75rem;
}

.ad-slot__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.55rem;
}

.ad-slot__head strong { letter-spacing: -0.02em; }
.ad-slot__meta { color: var(--muted); font-size: 0.86rem; }

.ad-slot__mount {
  min-height: 110px;
  display: grid;
  place-items: center;
  overflow: auto;
}

.ad-placeholder {
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 100px;
  border-radius: 12px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: repeating-linear-gradient(135deg, #fff, #fff 10px, #f1f5f9 10px, #f1f5f9 20px);
  text-align: center;
  padding: 1rem;
  font-weight: 750;
}

.ad-placeholder--warning {
  color: var(--warning);
  border-color: #fcd34d;
  background: #fffbeb;
}

.ad-frame {
  border: 0;
  display: block;
  max-width: 100%;
  background: #fff;
}

.status-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  color: var(--muted);
  font-weight: 700;
}

.log {
  display: grid;
  gap: 0.65rem;
  max-height: 420px;
  overflow: auto;
}

.log-row {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  padding: 0.65rem;
}

.probe-list {
  display: grid;
  gap: 0.75rem;
}

.probe-item {
  display: grid;
  gap: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.8rem;
  background: #fff;
}

.probe-item img {
  max-width: 320px;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.table-like {
  display: grid;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}

.table-like div {
  display: grid;
  grid-template-columns: minmax(140px, 0.4fr) 1fr;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.table-like div:last-child { border-bottom: 0; }
.table-like dt { font-weight: 800; }
.table-like dd { margin: 0; color: var(--muted); overflow-wrap: anywhere; }

.site-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.25rem 2rem;
  color: var(--muted);
}

@media (max-width: 760px) {
  .site-header__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav { justify-content: flex-start; }

  .table-like div { grid-template-columns: 1fr; }
}