.signal-hero {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--border-soft);
  background:
    radial-gradient(circle at 78% 18%, rgb(72 245 138 / 12%), transparent 30rem),
    linear-gradient(180deg, rgb(16 26 19 / 68%), transparent);
}

.signal-hero h1 { max-width: 940px; font-size: clamp(44px, 6vw, 76px); }
.signal-hero .lede,
.signal-detail .lede,
.signal-entity-detail .lede,
.narrow .lede { max-width: 800px; margin: 22px 0 0; color: var(--text-secondary); font-size: clamp(18px, 2vw, 22px); }
.signal-hero-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); gap: 56px; align-items: center; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.signal-hero .button-row { margin-top: 30px; }

.signal-principles {
  display: grid;
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--accent-border);
  border-radius: 18px;
  background: var(--evidence-background);
  box-shadow: var(--shadow);
}
.signal-principles strong,
.signal-principles span { padding: 18px 22px; border-bottom: 1px solid var(--border-soft); }
.signal-principles strong { color: var(--accent); font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; }
.signal-principles span:last-child { border-bottom: 0; }
.signal-principles span::before { content: "✓"; margin-right: 10px; color: var(--accent); font-weight: 900; }

.signal-hub-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; }
.signal-hub-card {
  display: grid;
  min-height: 142px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease, background 160ms ease;
}
.signal-hub-card:hover { border-color: var(--accent); background: var(--surface-raised); color: var(--text); transform: translateY(-2px); }
.signal-hub-card span { color: var(--accent); font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; font-size: 11px; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.signal-hub-card strong { margin: 12px 0; font-size: 18px; line-height: 1.2; }
.signal-hub-card small { align-self: end; color: var(--muted); }

.signal-filter {
  display: grid;
  grid-template-columns: minmax(180px, 1.2fr) minmax(150px, .8fr) minmax(150px, .8fr) minmax(150px, .75fr);
  gap: 12px;
  align-items: end;
  margin-bottom: 28px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-muted);
}
.signal-filter label,
.signal-contribution-form label { display: grid; gap: 7px; color: var(--text-secondary); font-size: 13px; font-weight: 750; }
.signal-filter input,
.signal-filter select,
.signal-contribution-form input,
.signal-contribution-form select,
.signal-contribution-form textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--control-border);
  border-radius: var(--radius);
  background: var(--surface-input);
  color: var(--text);
}
.signal-contribution-form textarea { resize: vertical; line-height: 1.5; }
.signal-filter .signal-checkbox { grid-column: 1 / -1; display: flex; align-items: center; gap: 9px; }
.signal-filter .signal-checkbox input { width: 18px; min-height: 18px; }

.signal-feed { display: grid; gap: 16px; }
.signal-card {
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: linear-gradient(145deg, var(--surface), var(--surface-muted));
  box-shadow: 0 16px 45px rgb(0 0 0 / 18%);
}
.signal-card h2 { margin-top: 14px; font-size: clamp(25px, 3vw, 34px); }
.signal-card h2 a { text-decoration: none; }
.signal-card > p { max-width: 920px; margin: 14px 0 0; color: var(--text-secondary); }
.signal-card-topline { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; color: var(--muted); font-size: 12px; font-weight: 700; }
.signal-type {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 3px 9px;
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.signal-type-deprecation,
.signal-type-outage { border-color: var(--warning-border); color: var(--warning); }
.signal-type-pricing { border-color: rgb(128 192 255 / 56%); color: #a9d0ff; }
.signal-type-community { border-color: var(--control-border); color: var(--muted); }

.signal-action { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 14px; margin-top: 18px; padding: 14px 16px; border-left: 3px solid var(--warning); background: var(--warning-wash); }
.signal-action strong { color: var(--warning); white-space: nowrap; }
.signal-action span { color: var(--text-secondary); }
.signal-entities { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.signal-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-input);
  font-weight: 750;
  text-decoration: none;
}
.signal-chip span { color: var(--muted); font-size: 10px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.signal-chip-model,
.signal-chip-model_family { border-color: var(--accent-border); }
.signal-card-footer { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--border-soft); color: var(--muted); font-size: 13px; }
.signal-card-footer a { margin-left: auto; color: var(--text); font-weight: 750; }
.signal-save {
  min-height: 34px;
  padding: 5px 11px;
  border: 1px solid var(--control-border);
  border-radius: 999px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
}
.signal-save:hover,
.signal-save.is-saved,
[data-signal-save].is-saved { border-color: var(--accent); color: var(--accent); }

.signal-method { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.signal-method > div { padding: 28px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); }
.signal-method h2 { font-size: clamp(26px, 3vw, 36px); }
.signal-method p:not(.eyebrow) { color: var(--text-secondary); }
.signal-method a { color: var(--accent); font-weight: 750; }

.signal-detail-header,
.signal-entity-header { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; align-items: start; margin-top: 34px; }
.signal-detail h1,
.signal-entity-detail h1 { margin-top: 14px; font-size: clamp(42px, 6vw, 70px); }
.signal-scorecard { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); overflow: hidden; border: 1px solid var(--accent-border); border-radius: 16px; background: var(--evidence-background); }
.signal-scorecard span { display: grid; gap: 4px; min-height: 108px; padding: 18px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
.signal-scorecard span:nth-child(2n) { border-right: 0; }
.signal-scorecard span:nth-last-child(-n+2) { border-bottom: 0; }
.signal-scorecard strong { align-self: end; color: var(--text); font-size: 26px; letter-spacing: -.03em; text-transform: none; overflow-wrap: anywhere; }
.signal-detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 44px; margin-top: 56px; }
.signal-detail-section + .signal-detail-section { margin-top: 52px; }
.signal-detail-section > h2 { margin-bottom: 20px; font-size: 32px; }
.signal-sources,
.signal-discussions,
.signal-claims { display: grid; gap: 12px; }
.signal-sources article,
.signal-claims article,
.signal-relations article {
  display: grid;
  gap: 10px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}
.signal-sources article > div { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.signal-sources article > div span,
.signal-sources small,
.signal-claims small,
.signal-relations small { color: var(--muted); font-size: 12px; }
.signal-sources p { margin: 0; color: var(--text-secondary); }
.signal-sources article > a,
.signal-claims a,
.signal-relations article > a:last-child { color: var(--accent); font-weight: 750; }
.signal-claims { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.signal-claims article > span { color: var(--muted); font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; font-size: 12px; text-transform: uppercase; }
.signal-claims article > strong { font-size: 21px; overflow-wrap: anywhere; }
.signal-discussions a { display: grid; gap: 5px; padding: 16px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); text-decoration: none; }
.signal-discussions a > span { color: var(--accent); font-size: 11px; font-weight: 800; text-transform: uppercase; }
.signal-discussions small { color: var(--muted); }
.signal-reader-panel { position: sticky; top: 104px; align-self: start; display: grid; gap: 14px; padding: 22px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); }
.signal-reader-panel h2 { font-size: 25px; }
.signal-reader-panel > p { margin: 0; color: var(--muted); }
.signal-reactions { display: grid; gap: 8px; }
.signal-reaction { display: flex; justify-content: space-between; gap: 12px; min-height: 44px; padding: 9px 12px; border: 1px solid var(--control-border); border-radius: var(--radius); background: var(--surface-input); color: var(--text); cursor: pointer; }
.signal-reaction:hover,
.signal-reaction.is-selected { border-color: var(--accent); color: var(--accent); }
.signal-reaction:disabled { opacity: .6; cursor: progress; }

.signal-entity-group + .signal-entity-group { margin-top: 64px; }
.signal-entity-group > h2 { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.signal-entity-group > h2 span { color: var(--accent); font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; font-size: 14px; }
.signal-entity-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.signal-entity-grid > a { display: grid; min-height: 220px; padding: 22px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); text-decoration: none; }
.signal-entity-grid > a:hover { border-color: var(--accent); color: var(--text); }
.signal-entity-grid span { color: var(--accent); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.signal-entity-grid strong { margin-top: 12px; font-size: 22px; }
.signal-entity-grid p { color: var(--text-secondary); }
.signal-entity-grid small { align-self: end; color: var(--muted); }
.signal-aliases { display: flex; flex-wrap: wrap; gap: 8px; }
.signal-aliases span { padding: 7px 10px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface-input); font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; font-size: 13px; }
.signal-relations { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.signal-relations article > span { color: var(--muted); font-size: 12px; text-transform: uppercase; }
.signal-relations article > a:nth-child(2) { font-size: 20px; font-weight: 750; }

.narrow { width: min(calc(100% - 48px), 820px); }
.signal-form-note { display: grid; gap: 9px; margin: 28px 0; padding: 20px; border: 1px solid var(--accent-border); border-radius: 12px; background: var(--accent-wash); }
.signal-form-note span::before { content: "✓"; margin-right: 9px; color: var(--accent); }
.signal-contribution-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 28px; padding: 26px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); }
.signal-contribution-form label:has(textarea),
.signal-contribution-form .consent,
.signal-contribution-form .form-status,
.signal-contribution-form button { grid-column: 1 / -1; }
.signal-contribution-form .consent { display: flex; align-items: start; gap: 10px; font-weight: 500; }
.signal-contribution-form .consent input { width: 18px; min-height: 18px; margin-top: 4px; }
.honeypot { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }
.form-status[data-state="error"] { color: var(--danger); }
.form-status[data-state="success"] { color: var(--success); }

.signal-plan-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-bottom: 56px; }
.signal-plan-grid article { display: grid; min-height: 330px; padding: 26px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); }
.signal-plan-grid article:nth-child(2) { border-color: var(--accent); box-shadow: 0 20px 60px rgb(72 245 138 / 10%); }
.signal-plan-grid article > span { color: var(--accent); font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; font-size: 12px; font-weight: 800; text-transform: uppercase; }
.signal-plan-grid h2 { margin-top: 12px; font-size: 34px; }
.signal-plan-grid p { color: var(--text-secondary); }
.signal-plan-grid .button { align-self: end; }

@media (max-width: 1040px) {
  .signal-hub-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .signal-filter { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .signal-entity-grid,
  .signal-relations { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .signal-hero { padding: 64px 0 48px; }
  .signal-hero-grid,
  .signal-detail-header,
  .signal-entity-header,
  .signal-detail-grid,
  .signal-method,
  .signal-plan-grid { grid-template-columns: 1fr; }
  .signal-hub-grid,
  .signal-entity-grid,
  .signal-relations,
  .signal-claims,
  .signal-contribution-form { grid-template-columns: 1fr; }
  .signal-filter { grid-template-columns: 1fr; }
  .signal-card { padding: 20px; }
  .signal-card-footer a { margin-left: 0; }
  .signal-action { grid-template-columns: 1fr; }
  .signal-scorecard { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .signal-reader-panel { position: static; }
  .signal-contribution-form label,
  .signal-contribution-form .consent,
  .signal-contribution-form .form-status,
  .signal-contribution-form button { grid-column: 1; }
}

@media (max-width: 480px) {
  .signal-hub-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .signal-scorecard { grid-template-columns: 1fr; }
  .signal-scorecard span { border-right: 0; border-bottom: 1px solid var(--border); }
  .signal-scorecard span:nth-last-child(-n+2) { border-bottom: 1px solid var(--border); }
  .signal-scorecard span:last-child { border-bottom: 0; }
}