:root {
  --bg: #f6f0e4;
  --bg-strong: #eadcc5;
  --panel: rgba(255, 251, 244, 0.92);
  --panel-strong: #fffaf2;
  --ink: #1f271f;
  --ink-soft: #657363;
  --accent: #8f4a1d;
  --accent-strong: #a85a24;
  --accent-soft: rgba(143, 74, 29, 0.12);
  --green: #27412a;
  --line: rgba(65, 47, 27, 0.14);
  --shadow: 0 18px 45px rgba(61, 44, 23, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: "Source Sans 3", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(214, 171, 83, 0.3), transparent 28%),
    radial-gradient(circle at bottom right, rgba(39, 65, 42, 0.14), transparent 24%),
    linear-gradient(135deg, var(--bg), #f9f6ee 48%, var(--bg-strong));
}

h1, h2, h3, h4, h5, h6 {
  font-family: "Noto Serif SC", "Songti SC", serif;
}

.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(23, 24, 19, 0.36);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
  z-index: 20;
}

.shell-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: min(360px, calc(100vw - 2rem));
  height: 100vh;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  color: #fff9ef;
  background:
    linear-gradient(180deg, rgba(26, 43, 24, 0.96), rgba(63, 32, 17, 0.96)),
    radial-gradient(circle at top, rgba(255, 255, 255, 0.08), transparent 32%);
  box-shadow: 0 20px 60px rgba(15, 20, 15, 0.35);
  transform: translateX(calc(-100% - 1rem));
  transition: transform 0.22s ease;
  z-index: 30;
  overflow-y: auto;
}

body.sidebar-open .shell-sidebar {
  transform: translateX(0);
}

body.sidebar-open .sidebar-backdrop {
  opacity: 1;
  pointer-events: auto;
}

.shell-main {
  min-height: 100vh;
  padding: 1.5rem;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.4rem;
}

.topbar-meta {
  min-width: 0;
}

.topbar-title {
  font-weight: 700;
  color: var(--green);
}

.topbar-subtitle {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.menu-toggle,
.sidebar-close {
  border: 1px solid var(--line);
  background: rgba(255, 251, 244, 0.88);
  color: var(--ink);
  border-radius: 14px;
}

.menu-toggle {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.24rem;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  background: var(--accent);
  display: block;
  border-radius: 999px;
}

.sidebar-close {
  width: 42px;
  height: 42px;
  margin-left: auto;
  font-size: 1.5rem;
  line-height: 1;
  color: #fff9ef;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.1);
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.brand-mark {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-size: 1.55rem;
  font-weight: 700;
  background: linear-gradient(135deg, #d5a336, #8f4a1d);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.brand-subtitle {
  color: rgba(255, 249, 239, 0.72);
  font-size: 0.9rem;
}

.user-chip {
  padding: 0.7rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 249, 239, 0.92);
  font-size: 0.92rem;
}

.sidebar-nav {
  display: grid;
  gap: 0.8rem;
}

.nav-section {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
}

.nav-section summary {
  list-style: none;
  cursor: pointer;
  padding: 0.9rem 1rem;
  font-weight: 700;
}

.nav-section summary::-webkit-details-marker {
  display: none;
}

.nav-section-links {
  display: grid;
  gap: 0.45rem;
  padding: 0 0.75rem 0.85rem;
}

.nav-link-item {
  display: block;
  padding: 0.75rem 0.85rem;
  border-radius: 12px;
  color: #fff9ef;
  text-decoration: none;
  transition: background-color 0.18s ease, transform 0.18s ease;
}

.nav-link-item:hover,
.nav-link-item.active {
  background: rgba(213, 163, 54, 0.18);
  color: #ffffff;
  transform: translateX(2px);
}

.sidebar-footer {
  margin-top: auto;
}

.maker-note {
  margin-top: 0.85rem;
  color: rgba(255, 249, 239, 0.4);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
}

.hero-card,
.panel-card,
.metric-card,
.login-panel {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero-card,
.panel-card,
.login-panel {
  padding: 1.35rem;
}

.hero-card {
  margin-bottom: 1.5rem;
}

.metric-card {
  padding: 1.15rem;
}

.metric-card.compact {
  height: 100%;
}

.metric-card-top {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}

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

.metric-label {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.metric-value {
  font-size: 1.42rem;
  font-weight: 700;
  color: var(--ink);
}

.pill {
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.page-header h1 {
  margin: 0;
  font-size: 2rem;
}

.page-header p {
  margin: 0.3rem 0 0;
  color: var(--ink-soft);
}

.eyebrow {
  margin-bottom: 0.4rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.table {
  --bs-table-bg: transparent;
}

.table thead th {
  color: var(--ink-soft);
  font-weight: 700;
  border-bottom-color: var(--line);
}

.table td,
.table th {
  vertical-align: middle;
}

.table-responsive {
  border-radius: 18px;
}

.login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.2rem;
}

.login-panel {
  width: min(520px, calc(100vw - 2rem));
}

.login-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

.inline-note {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.stat-list {
  display: grid;
  gap: 0.6rem;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.46);
}

.section-heading {
  margin-bottom: 0.85rem;
  font-size: 1.2rem;
}

.empty-hint {
  padding: 1rem;
  border: 1px dashed var(--line);
  border-radius: 16px;
  text-align: center;
  color: var(--ink-soft);
}

.ranking-quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.ranking-table-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.ranking-badge {
  display: inline-grid;
  min-width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

.ranking-mobile-list {
  display: none;
}

.ranking-mobile-card {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.46);
}

.ranking-mobile-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 0.85rem;
}

.ranking-mobile-metrics div {
  display: grid;
  gap: 0.2rem;
}

.ranking-mobile-metrics span {
  color: var(--ink-soft);
  font-size: 0.82rem;
}

@media (max-width: 900px) {
  .shell-main {
    padding: 1rem;
  }

  .page-header {
    flex-direction: column;
    align-items: stretch;
  }

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

  .ranking-table-header {
    align-items: stretch;
    flex-direction: column;
  }

  .ranking-table-header .btn-group {
    width: 100%;
  }

  .ranking-table-header .btn {
    flex: 1;
  }

  .ranking-desktop-table {
    display: none;
  }

  .ranking-mobile-list {
    display: grid;
    gap: 0.75rem;
  }
}