:root {
  --bg: #f3f5f8;
  --bg-elev: #ffffff;
  --bg-soft: #eef1f6;
  --text: #1a2230;
  --text-muted: #5c6678;
  --border: #d8dee8;
  --accent: #0f6e56;
  --accent-soft: rgba(15, 110, 86, 0.12);
  --accent-text: #0b5240;
  --shadow: 0 10px 30px rgba(26, 34, 48, 0.06);
  --sidebar-w: 248px;
  --sidebar-w-collapsed: 72px;
  --topbar-h: 56px;
  --radius: 14px;
  --font-display: "Fraunces", "Songti SC", "Noto Serif SC", Georgia, serif;
  --font-body: "Manrope", "PingFang SC", "Noto Sans SC", sans-serif;
  color-scheme: light;
}

html[data-theme="dark"] {
  --bg: #11161d;
  --bg-elev: #1a222c;
  --bg-soft: #222b37;
  --text: #e8edf5;
  --text-muted: #9aa6b8;
  --border: #2d3745;
  --accent: #3dcfb0;
  --accent-soft: rgba(61, 207, 176, 0.14);
  --accent-text: #9aecd8;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

button,
a {
  font: inherit;
}

button {
  cursor: pointer;
  border: 0;
  background: none;
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

.app {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  transition: grid-template-columns 0.25s ease;
}

.app.sidebar-collapsed {
  grid-template-columns: var(--sidebar-w-collapsed) 1fr;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  background: color-mix(in srgb, var(--bg-elev) 92%, transparent);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  z-index: 30;
  overflow: hidden;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 16px 14px;
  min-height: var(--topbar-h);
  cursor: pointer;
}

.cat-block {
  scroll-margin-top: calc(var(--topbar-h) + 16px);
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  background: linear-gradient(145deg, var(--accent), #1f8f72 55%, #245a8c);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}

.brand-text {
  min-width: 0;
}

.brand-text strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 650;
  letter-spacing: 0.01em;
  white-space: nowrap;
}


.sidebar-nav {
  flex: 1;
  overflow: auto;
  padding: 8px 10px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--text);
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.nav-item:hover {
  background: var(--bg-soft);
}

.nav-item.active {
  background: var(--accent-soft);
  color: var(--accent-text);
  font-weight: 650;
}

.nav-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  font-size: 0.9rem;
}

.nav-item.active .nav-icon {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  background: color-mix(in srgb, var(--accent-soft) 70%, var(--bg-elev));
}

.nav-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-foot {
  padding: 12px;
  border-top: 1px solid var(--border);
}

.collapse-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text-muted);
}

.collapse-btn:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
}

.app.sidebar-collapsed .brand-text,
.app.sidebar-collapsed .nav-label,
.app.sidebar-collapsed .collapse-btn span {
  display: none;
}

.app.sidebar-collapsed .nav-item {
  justify-content: center;
  padding-inline: 8px;
}

.main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: var(--topbar-h);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 8px 18px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
}

.top-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  justify-self: start;
}

.top-title {
  text-align: center;
  justify-self: center;
  max-width: min(78vw, 520px);
  pointer-events: none;
}

.top-title h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.1vw, 1.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.top-right {
  display: flex;
  align-items: center;
  justify-self: end;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
}

.content {
  padding: 18px 20px 96px;
  max-width: 960px;
  animation: fade-up 0.35s ease both;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.catalog,
.catalog-inner {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.top-nav[hidden] {
  display: none !important;
}

.cat-block-head {
  margin-bottom: 12px;
}

.cat-block-head h2 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.cat-block-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  font-size: 0.85rem;
  background: var(--accent-soft);
  color: var(--accent-text);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--border));
}

.grid,
.grid-home {
  display: grid !important;
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  gap: 11px;
}

/* 紧凑横向卡片：左图标 + 右标题/一行简介 */
.card {
  display: flex;
  gap: 11px;
  align-items: center;
  padding: 11px 13px;
  min-height: 58px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--bg-elev) 94%, transparent);
  border: 1px solid var(--border);
  box-shadow: none;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.card:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  background: var(--bg-elev);
}

.card-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  background: linear-gradient(160deg, var(--bg-soft), var(--bg-elev));
  border: 1px solid var(--border);
  font-weight: 700;
  font-size: 0.9rem;
  font-family: var(--font-display);
  color: var(--accent-text);
  overflow: hidden;
}

.card-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  min-width: 0;
  flex: 1;
}

.card-body h3 {
  margin: 0 0 2px;
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-body p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.76rem;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.footer {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* 右下角联系我们：PC 固定大卡片；手机客服按钮在原位，卡片向上展开 */
.contact-float {
  position: fixed !important;
  right: 20px !important;
  bottom: 20px !important;
  left: auto !important;
  z-index: 9999 !important;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  width: auto;
}

.contact-fab {
  display: none;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--accent-text);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.2);
  place-items: center;
  flex-shrink: 0;
}

.contact-panel {
  display: block;
  width: 320px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.22);
  padding: 16px 16px 12px;
  overflow: hidden;
}

.contact-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.contact-head-icon {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border));
  color: var(--accent-text);
  flex-shrink: 0;
}

.contact-head strong {
  font-size: 1.05rem;
  font-weight: 700;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: min(58vh, 420px);
  overflow: auto;
}

.contact-row {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 10px 8px;
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  transition: background 0.15s ease;
}

.contact-row:hover {
  background: var(--bg-soft);
}

.contact-type {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
}

.contact-type.tg {
  background: #2aabee;
}

.contact-type.qq {
  background: #12b7f5;
}

.contact-type.mail {
  background: #6b7280;
}

.contact-label {
  font-size: 0.86rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.contact-value {
  font-size: 0.86rem;
  font-weight: 650;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 150px;
  text-align: right;
}

@media (min-width: 861px) {
  .contact-fab {
    display: none !important;
  }

  .contact-panel {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    width: 320px !important;
  }

  #contactFloat {
    position: fixed !important;
    right: 20px !important;
    bottom: 20px !important;
    left: auto !important;
    z-index: 9999 !important;
  }
}

.overlay {
  display: none;
}

.empty {
  padding: 36px 18px;
  text-align: center;
  color: var(--text-muted);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elev) 70%, transparent);
}

@media (max-width: 860px) {
  .app,
  .app.sidebar-collapsed {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: min(84vw, 300px);
    transform: translateX(-105%);
    transition: transform 0.25s ease;
    box-shadow: var(--shadow);
  }

  .app.drawer-open .sidebar {
    transform: none;
  }

  .menu-toggle {
    display: grid;
    place-items: center;
  }

  .collapse-btn {
    display: none;
  }

  .overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(10, 14, 20, 0.45);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 25;
  }

  .app.drawer-open .overlay {
    opacity: 1;
    pointer-events: auto;
  }

  .content {
    padding: 16px 14px 110px;
  }

  .topbar {
    padding-inline: 12px;
  }

  .app.sidebar-collapsed .brand-text,
  .app.sidebar-collapsed .nav-label {
    display: block;
  }

  .app.sidebar-collapsed .nav-item {
    justify-content: flex-start;
    padding-inline: 12px;
  }

  .contact-float {
    right: 14px;
    bottom: 14px;
  }

  .contact-fab {
    display: grid !important;
  }

  .contact-panel {
    display: none !important;
    width: min(320px, calc(100vw - 28px));
  }

  /* 展开：卡片在上，客服按钮仍在右下角原位 */
  .contact-float.is-open .contact-panel {
    display: block !important;
  }

  .contact-float.is-open .contact-fab {
    border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
    color: var(--accent-text);
    background: color-mix(in srgb, var(--bg-elev) 85%, var(--accent-soft));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}