:root {
  --bg: #f6f0e8;
  --bg-accent: #efe2cf;
  --panel: rgba(255, 252, 247, 0.88);
  --line: rgba(86, 58, 28, 0.14);
  --text: #21160d;
  --muted: #6f5843;
  --brand: #b14d19;
  --shadow: 0 24px 60px rgba(76, 49, 22, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.65), transparent 32%),
    radial-gradient(circle at bottom right, rgba(177, 77, 25, 0.12), transparent 28%),
    linear-gradient(135deg, var(--bg), var(--bg-accent));
}

.shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

.hero { padding: 30px 0 24px; }

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  color: var(--brand);
}

h1 {
  margin: 0;
  font-size: clamp(32px, 6vw, 62px);
  line-height: 1.02;
  max-width: 900px;
}

.lede, .meta, .hint {
  max-width: 760px;
  color: var(--muted);
}

.lede.alt {
  margin-top: 14px;
}

.address-card {
  margin-top: 24px;
  max-width: 760px;
  padding: 18px 20px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: rgba(255, 251, 245, 0.76);
  box-shadow: var(--shadow);
}

.address-label {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.address-value {
  margin: 0;
  font-size: clamp(24px, 3.6vw, 42px);
  line-height: 1.15;
  word-break: break-word;
}

.actions {
  display: flex;
  gap: 12px;
  margin: 22px 0 16px;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font: inherit;
  cursor: pointer;
  background: var(--brand);
  color: white;
  box-shadow: var(--shadow);
}

button.secondary, button.ghost {
  background: rgba(255, 255, 255, 0.6);
  color: var(--text);
  box-shadow: none;
  border: 1px solid var(--line);
}

.grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 18px;
}

.seo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 12px;
}

.panel-head h2 {
  margin: 0;
  font-size: 18px;
}

.message-list { padding: 8px; }

.message-card {
  display: block;
  width: 100%;
  text-align: left;
  border-radius: 18px;
  background: transparent;
  color: inherit;
  padding: 14px;
  margin-bottom: 8px;
}

.message-card.active,
.message-card:hover {
  background: rgba(177, 77, 25, 0.08);
}

.message-card .subject {
  margin: 0 0 6px;
  font-size: 17px;
}

.message-card .meta,
.message-card .snippet {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.message-detail { padding: 24px; }

.message-detail h3 {
  margin-top: 0;
  font-size: 28px;
}

.message-detail .body {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  white-space: pre-wrap;
  word-break: break-word;
}

.detail-toolbar {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.detail-toolbar button {
  padding: 8px 14px;
  box-shadow: none;
}

.detail-toolbar button.active {
  background: var(--brand);
  color: white;
}

.html-frame {
  width: 100%;
  min-height: 420px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: white;
}

.empty {
  padding: 20px;
  color: var(--muted);
}

.seo-panel {
  padding: 22px;
}

.seo-panel h2 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 24px;
}

.seo-panel p {
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.65;
}

.seo-list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.7;
}

code {
  font-family: "Courier New", monospace;
  font-size: 13px;
}

@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr; }
  .seo-grid { grid-template-columns: 1fr; }
  .shell { width: min(100vw - 20px, 1120px); }
  h1 { line-height: 1.08; }
}