:root {
  --bg: #f5efe2;
  --bg-soft: #fbf7ef;
  --panel: rgba(255, 251, 245, 0.92);
  --ink: #1e1b16;
  --muted: #665f54;
  --line: rgba(57, 45, 29, 0.12);
  --accent: #c85f31;
  --accent-deep: #8f3818;
  --success: #2f7a50;
  --danger: #b23a32;
  --shadow: 0 18px 45px rgba(58, 42, 20, 0.12);
  --radius: 24px;
  --radius-sm: 16px;
  --font-display: "Noto Serif SC", "Songti SC", "STSong", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(200, 95, 49, 0.15), transparent 30%),
    radial-gradient(circle at bottom right, rgba(47, 122, 80, 0.12), transparent 24%),
    linear-gradient(180deg, #f8f2e8 0%, #efe6d5 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.brand {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.flash,
.panel-card,
.hero-card {
  backdrop-filter: blur(8px);
}

.flash {
  margin-bottom: 18px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}

.flash-success {
  background: rgba(47, 122, 80, 0.12);
  color: var(--success);
}

.flash-error {
  background: rgba(178, 58, 50, 0.12);
  color: var(--danger);
}

.auth-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: stretch;
}

.auth-layout.single-column {
  grid-template-columns: 1fr;
  max-width: 760px;
  margin: 0 auto;
}

.hero-card,
.panel-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 36px;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-card h1,
.panel-heading h1,
.panel-heading h2 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.15;
}

.hero-card h1 {
  font-size: clamp(2.2rem, 4vw, 3.7rem);
  max-width: 9ch;
}

.hero-copy,
.muted-copy {
  color: var(--muted);
  line-height: 1.7;
}

.feature-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.feature-list span,
.status-pill,
.article-meta span {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  font-size: 0.92rem;
}

.panel-card {
  padding: 28px;
}

.narrow-panel {
  max-width: 520px;
}

.panel-heading {
  margin-bottom: 18px;
}

.section-heading-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-deep);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.form-stack {
  display: grid;
  gap: 16px;
}

.compact-stack {
  gap: 12px;
}

.compact-top {
  margin-top: 18px;
}

.field {
  display: grid;
  gap: 8px;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.checkbox-row input {
  width: auto;
}

.field span {
  font-size: 0.95rem;
  font-weight: 600;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(58, 45, 30, 0.18);
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
}

.field textarea {
  resize: vertical;
  min-height: 240px;
}

.primary-button,
.secondary-button,
.ghost-button,
.danger-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 16px;
  padding: 13px 18px;
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.action-link {
  white-space: nowrap;
}

.primary-button:disabled,
.secondary-button:disabled,
.ghost-button:disabled,
.danger-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover,
.danger-button:hover {
  transform: translateY(-1px);
}

.primary-button {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  color: #fffaf2;
}

.secondary-button,
.ghost-button {
  background: rgba(255, 255, 255, 0.84);
  color: var(--ink);
  border: 1px solid var(--line);
}

.danger-button {
  background: rgba(178, 58, 50, 0.12);
  color: var(--danger);
}

.inline-form {
  margin: 0;
}

.inline-alert {
  padding: 12px 14px;
  border-radius: 14px;
  margin-bottom: 14px;
}

.inline-alert-error {
  background: rgba(178, 58, 50, 0.12);
  color: var(--danger);
}

.inline-alert-success {
  background: rgba(47, 122, 80, 0.12);
  color: var(--success);
}

.dashboard-grid,
.workspace-grid {
  display: grid;
  gap: 20px;
}

.dashboard-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.workspace-grid {
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
}

.wide-card {
  grid-column: 1 / -1;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.quota-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.filter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-end;
}

.stat-card {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
}

.stat-card span {
  color: var(--muted);
  font-size: 0.95rem;
}

.stat-card strong {
  display: block;
  margin-top: 8px;
  font-size: 2rem;
}

.stat-label {
  font-size: 1.3rem;
}

.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 14px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

.data-table th {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.action-stack {
  display: grid;
  gap: 10px;
}

.inline-select-form {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.inline-select-form select {
  min-width: 180px;
}

.list-summary,
.pagination-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.list-summary {
  margin-bottom: 18px;
}

.pagination-bar {
  justify-content: space-between;
  margin-top: 18px;
}

.pagination-copy {
  margin: 0;
}

.status-active {
  color: var(--success);
}

.status-paused {
  color: var(--danger);
}

.status-neutral {
  color: var(--muted);
}

.invite-output,
.hint-box {
  margin-top: 14px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px dashed rgba(58, 45, 30, 0.2);
}

.hint-box p {
  margin: 6px 0;
}

.empty-cell {
  padding: 28px 10px;
  color: var(--muted);
  text-align: center;
}

.is-disabled {
  opacity: 0.55;
  pointer-events: none;
}

.setup-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 22px;
  align-items: center;
}

.qr-panel {
  padding: 16px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
}

.qr-image {
  width: 100%;
  height: auto;
  display: block;
}

.plain-steps {
  margin: 0 0 16px;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.article-panel {
  min-height: 520px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.article-preview {
  line-height: 1.9;
}

.article-preview h1,
.article-preview h2,
.article-preview h3 {
  font-family: var(--font-display);
  margin-top: 1.8em;
}

.article-preview p {
  margin: 0 0 1.15em;
}

.raw-output {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid var(--line);
}

.raw-output pre {
  white-space: pre-wrap;
  word-break: break-word;
}

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

.level-list {
  display: grid;
  gap: 16px;
}

.level-card {
  padding: 20px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.level-card h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
}

.level-card-head {
  margin-bottom: 12px;
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.history-card {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.history-card p,
.empty-copy {
  margin: 8px 0 0;
  color: var(--muted);
}

@media (max-width: 980px) {
  .auth-layout,
  .dashboard-grid,
  .workspace-grid,
  .setup-grid,
  .stats-row,
  .filter-grid,
  .quota-grid,
  .level-grid {
    grid-template-columns: 1fr;
  }

  .section-heading-bar,
  .pagination-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-card {
    min-height: auto;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 18px, 100%);
    padding-top: 18px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .panel-card,
  .hero-card {
    padding: 22px;
    border-radius: 20px;
  }

  .brand {
    font-size: 1.75rem;
  }

  .history-card {
    flex-direction: column;
  }

  .filter-actions {
    flex-direction: column;
    align-items: stretch;
  }
}