:root {
  color-scheme: dark;
  font: 15px/1.6 Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  color: #eef2f3;
  background: #0b1114;
  --surface: #111a1f;
  --raised: #18232a;
  --border: #2b3942;
  --muted: #a5b0b5;
  --gold: #c5a052;
  --focus: #d3b06a;
}

* { box-sizing: border-box; }
body { min-width: 0; margin: 0; }
.shell { width: min(1184px, calc(100% - 64px)); margin-inline: auto; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 112px;
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 16px; min-width: 0; }
.brand-name { color: var(--gold); font-size: 30px; font-weight: 750; letter-spacing: -0.06em; }
.brand-description { font-size: 14px; font-weight: 600; line-height: 1.5; }
.brand-description span { display: block; color: var(--muted); font-weight: 400; }
.environment-badge {
  flex: 0 0 auto;
  padding: 6px 12px;
  border: 1px solid #675632;
  border-radius: 999px;
  color: #e5bc70;
  background: #211e17;
  font-size: 14px;
  font-weight: 600;
}
.intro { max-width: 760px; padding: 56px 0 36px; }
.eyebrow { margin: 0 0 12px; color: var(--gold); font-size: 14px; font-weight: 600; letter-spacing: 0.06em; }
h1 { margin: 0; font-size: clamp(34px, 4vw, 52px); font-weight: 650; line-height: 1.12; letter-spacing: -0.04em; }
.lead { max-width: 650px; margin: 20px 0 0; color: var(--muted); font-size: 17px; }
.workspace { display: grid; grid-template-columns: minmax(0, 1fr) 304px; align-items: start; gap: 24px; }
.mining-panel, .context-panel { min-width: 0; padding: 24px; border: 1px solid var(--border); border-radius: 18px; background: var(--surface); }
.panel-heading { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 16px; }
h2 { margin: 0; font-size: 20px; font-weight: 600; line-height: 1.3; letter-spacing: -0.02em; }
.session-note { color: var(--muted); font-size: 14px; }
#web-miner-status { margin: 12px 0 20px; color: var(--muted); font-size: 14px; overflow-wrap: anywhere; }
#web-miner-container { min-width: 0; border-radius: 16px; background: #0b1114; }
#web-miner-container iframe { display: block; width: 100%; border: 0; border-radius: 16px; }
.context-panel .eyebrow { margin-bottom: 8px; }
.test-note { margin: 16px 0 24px; color: var(--muted); }
.limits { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin: 0 0 24px; }
.limits div { min-width: 0; }
dt, .detail-label { color: var(--muted); font-size: 14px; }
dd { margin: 6px 0 0; font-size: 19px; font-weight: 600; line-height: 1.4; }
dd span { display: block; margin-top: 4px; color: var(--muted); font-size: 14px; font-weight: 400; }
.connection-detail { display: grid; gap: 8px; min-width: 0; margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--border); }
code { font: 14px/1.6 ui-monospace, SFMono-Regular, Consolas, monospace; overflow-wrap: anywhere; }
.guidance { margin: 24px 0 0; color: var(--muted); font-size: 14px; }
footer { display: flex; flex-wrap: wrap; gap: 8px 16px; padding: 28px 0 36px; color: var(--muted); font-size: 14px; }
footer span { color: #a5b0b5; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; }

@media (max-width: 960px) {
  .workspace { grid-template-columns: minmax(0, 1fr); }
  .context-panel { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 24px; }
  .context-panel .eyebrow, .context-panel h2, .test-note, .limits, .guidance { grid-column: 1 / -1; }
  .limits { max-width: 360px; margin-bottom: 0; }
}

@media (max-width: 640px) {
  .shell { width: calc(100% - 32px); }
  .topbar { flex-wrap: wrap; gap: 12px; min-height: 0; padding-block: 20px; }
  .brand { gap: 12px; }
  .brand-name { font-size: 26px; }
  .brand-description { font-size: 14px; }
  .environment-badge { padding: 4px 10px; }
  .intro { padding: 32px 0 28px; }
  .lead { margin-top: 16px; font-size: 16px; }
  .workspace { gap: 24px; }
  .mining-panel { padding: 0; border: 0; border-radius: 0; background: transparent; }
  .panel-heading { gap: 6px; }
  #web-miner-status { margin: 10px 0 16px; }
  .context-panel { display: block; padding: 24px; }
  .limits { margin-bottom: 24px; }
  footer { padding-block: 24px; }
}