.seikai-page {
  --seikai-border: color-mix(in srgb, var(--ink) 16%, transparent);
  --seikai-soft: color-mix(in srgb, var(--accent-2) 7%, var(--paper));
  max-width: 76rem;
}

.seikai-lead {
  max-width: 48rem;
  margin: 1rem 0 1.2rem;
  font-size: 1rem;
  line-height: 1.75;
}

.seikai-policy {
  margin: 0 0 1rem;
  padding: .85rem 1rem;
  border-left: 3px solid var(--accent-2);
  background: var(--seikai-soft);
}

.seikai-policy strong,
.seikai-policy p { display: block; margin: 0; }
.seikai-policy p { margin-top: .25rem; color: var(--muted); font-size: .82rem; line-height: 1.65; }

.seikai-panel {
  margin: 1rem 0;
  padding: 1.1rem;
  border: 1px solid var(--seikai-border);
  background: var(--paper);
  border-radius: 8px;
}

.seikai-panel > h2,
.seikai-panel > h3 { margin-top: 0; }
.seikai-panel-intro { margin-top: -.3rem; color: var(--muted); line-height: 1.6; }

.seikai-gate {
  display: grid;
  gap: .45rem;
  padding: .9rem;
  border-left: 3px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, var(--paper));
}

.seikai-gate p,
.seikai-gate small { margin: 0; }
.seikai-gate small { color: var(--muted); line-height: 1.5; }

.seikai-actions,
.seikai-mode-actions,
.seikai-manual-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
}

.seikai-actions { margin-top: .8rem; }
.seikai-actions button,
.seikai-actions label,
.seikai-mode-actions button,
.seikai-manual-row button { min-height: 44px; }

.seikai-file-input {
  display: grid;
  gap: .35rem;
  padding: .75rem;
  border: 1px dashed var(--seikai-border);
  background: color-mix(in srgb, var(--paper) 88%, var(--accent-2));
}

.seikai-file-input span { font-weight: 800; }
.seikai-file-input small { color: var(--muted); line-height: 1.5; }

.seikai-status {
  flex: 1 1 16rem;
  min-height: 1.5rem;
  color: var(--muted);
  line-height: 1.5;
}

.seikai-observation-grid,
.seikai-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  margin-top: 1rem;
}

.seikai-observation-card,
.seikai-result-card {
  min-width: 0;
  padding: .85rem;
  border: 1px solid var(--seikai-border);
  background: color-mix(in srgb, var(--paper) 94%, var(--accent-2));
}

.seikai-observation-card.is-review {
  border-left: 3px solid #b77820;
  background: color-mix(in srgb, #f2c46d 10%, var(--paper));
}

.seikai-card-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .5rem;
  margin-bottom: .55rem;
}

.seikai-card-heading strong { overflow-wrap: anywhere; }
.seikai-card-heading small { color: var(--muted); white-space: nowrap; }
.seikai-observation-card img { display: block; width: 100%; max-height: 12rem; object-fit: contain; margin-bottom: .6rem; background: #fff; }
.seikai-observation-card label { display: grid; gap: .25rem; margin-top: .55rem; font-size: .78rem; font-weight: 800; }
.seikai-observation-card input[type="text"],
.seikai-observation-card input[type="number"] { width: 100%; min-height: 44px; padding: .55rem .65rem; border: 1px solid var(--seikai-border); background: var(--paper); color: var(--ink); font: inherit; }
.seikai-check-row { display: flex !important; grid-template-columns: none !important; align-items: center; gap: .45rem !important; }
.seikai-check-row input { width: 1.1rem; height: 1.1rem; }
.seikai-candidate-list { margin: .5rem 0 0; padding-left: 1.1rem; color: var(--muted); font-size: .76rem; line-height: 1.55; }

.seikai-manual-row { margin-top: 1rem; }
.seikai-manual-row label { flex: 1 1 18rem; display: grid; gap: .25rem; font-size: .78rem; font-weight: 800; }
.seikai-manual-row input { min-height: 44px; padding: .55rem .65rem; border: 1px solid var(--seikai-border); background: var(--paper); color: var(--ink); font: inherit; }

.seikai-target-table-wrap { overflow-x: auto; margin-top: .85rem; }
.seikai-target-table { width: 100%; min-width: 36rem; border-collapse: collapse; }
.seikai-target-table th,
.seikai-target-table td { padding: .6rem .55rem; border-bottom: 1px solid var(--seikai-border); text-align: left; vertical-align: middle; }
.seikai-target-table th { font-size: .76rem; color: var(--muted); }
.seikai-target-table select { min-width: 4rem; min-height: 44px; padding: .35rem; font: inherit; }
.seikai-mode-actions { margin-top: .9rem; }
.seikai-mode-actions button[aria-pressed="true"] { outline: 3px solid color-mix(in srgb, var(--accent-2) 30%, transparent); outline-offset: 1px; }

.seikai-result-card { display: grid; gap: .5rem; }
.seikai-result-card.is-possible { border-left: 3px solid var(--accent-2); }
.seikai-result-card.is-blocked { border-left: 3px solid var(--accent); }
.seikai-result-card p { margin: 0; line-height: 1.55; }
.seikai-result-card ul { margin: 0; padding-left: 1.15rem; color: var(--muted); line-height: 1.55; }
.seikai-route { overflow-wrap: anywhere; font-size: .82rem; }
.seikai-badge { display: inline-block; width: fit-content; padding: .2rem .45rem; border: 1px solid var(--seikai-border); color: var(--muted); font-size: .7rem; font-weight: 800; }
.seikai-badge.is-ok { color: var(--accent-2); border-color: color-mix(in srgb, var(--accent-2) 45%, transparent); }
.seikai-badge.is-warning { color: #8a5200; border-color: #b77820; }
.seikai-empty { margin: .8rem 0 0; color: var(--muted); }
.seikai-notes { margin-top: 1rem; }
.seikai-notes p { line-height: 1.65; }

@media (max-width: 640px) {
  .seikai-page { width: auto; }
  .seikai-panel { padding: .85rem; }
  .seikai-observation-grid,
  .seikai-result-grid { grid-template-columns: 1fr; }
  .seikai-actions > *,
  .seikai-mode-actions > * { flex: 1 1 100%; }
  .seikai-actions button,
  .seikai-mode-actions button { width: 100%; }
  .seikai-status { flex-basis: 100%; }
  .seikai-observation-card img { max-height: 10rem; }
}