:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-alt: #f7f8fc;
  --line: #d9deea;
  --text: #18212f;
  --muted: #637087;
  --primary: #3f63f3;
  --primary-strong: #2f4fe0;
  --warning-bg: #fff8e8;
  --warning-line: #f0cf72;
  --success: #237a57;
  --error: #c24848;
  --busy: #3f63f3;
  --shadow: 0 18px 48px rgba(24, 33, 47, 0.08);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

.page {
  width: min(1120px, calc(100vw - 32px));
  margin: 40px auto 64px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.hero {
  padding: 32px;
}

.hero h1,
.card h2 {
  margin: 0;
}

.lead {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.resolver-form {
  margin-top: 24px;
}

.field-label {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 10px;
}

.field-row {
  display: flex;
  gap: 12px;
}

.limit-group {
  margin: 18px 0 0;
  padding: 0;
  border: 0;
}

.limit-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.limit-option {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-alt);
  color: var(--text);
  cursor: pointer;
}

.limit-option input {
  width: 16px;
  margin: 0;
  accent-color: var(--primary);
}

.limit-option:has(input:checked) {
  border-color: rgba(63, 99, 243, 0.35);
  background: rgba(63, 99, 243, 0.08);
  color: var(--primary-strong);
}

.limit-option:has(input:disabled) {
  cursor: wait;
  opacity: 0.7;
}

.limit-option span {
  font-weight: 600;
}

.limit-group .field-label {
  margin-bottom: 12px;
}

.limit-group .field-label,
.limit-group legend {
  padding: 0;
}

.limit-group legend {
  font-size: 14px;
}

.limit-group legend.field-label {
  float: none;
}

.limit-group::after {
  content: '';
  display: block;
  clear: both;
}

input,
button {
  font: inherit;
}

input {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  background: var(--surface-alt);
  color: var(--text);
}

input:focus {
  outline: 2px solid rgba(63, 99, 243, 0.15);
  border-color: var(--primary);
}

button {
  border: 0;
  border-radius: 14px;
  padding: 0 20px;
  min-width: 120px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

button:hover {
  background: var(--primary-strong);
}

button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.hint,
.status,
.subhead,
.eyebrow,
.muted {
  color: var(--muted);
}

.hint,
.status {
  margin: 14px 0 0;
  line-height: 1.7;
}

.status[data-state="busy"] {
  color: var(--busy);
}

.status[data-state="success"] {
  color: var(--success);
}

.status[data-state="error"] {
  color: var(--error);
}

.result {
  margin-top: 20px;
  display: grid;
  gap: 20px;
}

.result-grid {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 24px;
  padding: 24px;
}

.cover {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--surface-alt);
}

.placeholder {
  display: grid;
  place-items: center;
  color: var(--muted);
}

.section-head {
  display: grid;
  gap: 8px;
}

.eyebrow {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
}

.subhead {
  margin: 0;
}

.meta-grid {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.meta-row {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.label {
  color: var(--muted);
}

.value {
  min-width: 0;
  word-break: break-word;
}

.audio-block {
  margin-top: 22px;
  padding: 16px;
  border-radius: 16px;
  background: var(--surface-alt);
  border: 1px solid var(--line);
}

.rss-block {
  margin-top: 22px;
}

.rss-block h3 {
  margin: 0 0 12px;
  font-size: 16px;
}

.rss-list {
  display: grid;
  gap: 12px;
}

.rss-row {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--surface-alt);
}

.rss-row-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.rss-row-label {
  font-weight: 600;
}

.rss-row-count {
  color: var(--muted);
  font-size: 14px;
}

.rss-row-link {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  word-break: break-word;
}

.rss-copy-button {
  min-width: auto;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
}

.rss-copy-button:hover {
  background: var(--surface-alt);
}

.rss-row-feedback {
  font-size: 14px;
  color: var(--muted);
}

.rss-row-feedback[data-state="success"] {
  color: var(--success);
}

.rss-row-feedback[data-state="error"] {
  color: var(--error);
}

.audio-block audio {
  width: 100%;
}

.audio-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 12px;
}

.description {
  margin: 0;
  padding: 24px;
  line-height: 1.8;
  white-space: pre-wrap;
}

.warning-card {
  padding: 20px 24px;
  background: var(--warning-bg);
  border-color: var(--warning-line);
}

.warning-list {
  margin: 12px 0 0;
  padding-left: 20px;
  line-height: 1.8;
}

.card > h2 {
  padding: 24px 24px 0;
}

a {
  color: var(--primary-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

@media (max-width: 820px) {
  .page {
    width: min(100vw - 20px, 1120px);
    margin-top: 20px;
  }

  .hero,
  .result-grid,
  .description,
  .warning-card {
    padding: 20px;
  }

  .field-row {
    flex-direction: column;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }

  button {
    min-height: 48px;
  }

  .meta-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .rss-row-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}