:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --border: #2a2f3a;
  --text: #e6e9ef;
  --muted: #9aa3b2;
  --accent: #5b8cff;
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

header.site {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 32px;
}

header.site h1 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}

header.site .brand span { color: var(--muted); font-weight: 400; }

.crumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 24px;
}
.crumb a { text-decoration: underline; }

/* Hub grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.card h3 { margin: 0 0 6px; font-size: 16px; font-weight: 600; }
.card p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.5; }

/* Panels */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

label.field-label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 8px;
}

input[type="text"] {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  padding: 12px 14px;
  outline: none;
}
input[type="text"]:focus { border-color: var(--accent); }
input.invalid { border-color: #ff5b6e; }

.btn {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  padding: 8px 12px;
  cursor: pointer;
  transition: border-color .15s ease;
}
.btn:hover { border-color: var(--accent); }

.hint { font-size: 12px; color: var(--muted); margin-top: 8px; }

/* Ads */
.coupang-ad { margin: 72px auto 8px; max-width: 100%; overflow-x: auto; text-align: center; padding-top: 32px; border-top: 1px solid var(--border); }
.coupang-ad iframe { max-width: 100%; }
.coupang-disclosure { margin: 10px 0 0; color: var(--muted); font-size: 11px; text-align: center; }
.adsense-slot { margin: 32px auto 0; display: block; text-align: center; min-height: 90px; }