:root {
  --sidebar-width: 248px;
  --sidebar-bg: #111820;
  --sidebar-panel: #252d38;
  --sidebar-tool: #2b2722;
  --sidebar-line: #a26820;
  --sidebar-text: #d7dde5;
  --sidebar-muted: #95a2b1;
  --sidebar-accent: #ff9600;
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  height: 100vh;
  overflow-y: auto;
  width: var(--sidebar-width);
  padding: 18px 10px 16px;
  border-right: 1px solid #25303a;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  scrollbar-color: #394552 transparent;
}

.sidebar::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .06), transparent 180px),
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, .025) 1px, transparent 1px);
  background-size: auto, 28px 28px, 28px 28px;
  opacity: .7;
}

.sidebar > * { position: relative; z-index: 1; }

.main-area { margin-left: var(--sidebar-width); }

.brand-lockup {
  justify-content: center;
  margin: 0 7px 14px;
  padding: 6px 3px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.brand-image-lockup {
  width: min(190px, 100%);
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid #dfe5eb;
  border-radius: 15px;
  background: #f8fafc;
  box-shadow: none;
}

.brand-image-lockup img {
  width: 100%;
  min-height: 0;
  height: auto;
  object-fit: contain;
}

.sidebar-tools {
  display: grid;
  gap: 8px;
  margin: 0 7px 12px;
  padding-top: 12px;
  border-top: 1px solid #25303a;
}

.sidebar-tools[hidden] {
  display: none !important;
}

.sidebar .nav-item.sidebar-tool-item {
  height: 54px;
  min-height: 54px;
  margin: 0;
  padding: 0 14px;
  border: 1px solid #79541f;
  border-left: 4px solid var(--sidebar-accent);
  border-radius: 8px;
  color: #f1f3f6;
  background: var(--sidebar-tool);
  font-size: 15px;
  font-weight: 700;
  box-shadow: none;
}

.sidebar .nav-item.sidebar-tool-item i {
  color: #f1f3f6;
  font-size: 17px;
}

.sidebar .nav-item.sidebar-tool-item:hover,
.sidebar .nav-item.sidebar-tool-item.active {
  border-color: #b87720;
  border-left-color: var(--sidebar-accent);
  color: #fff;
  background: #342d24;
  box-shadow: inset 0 0 0 1px rgba(255, 150, 0, .05);
}

.sidebar .nav-item.sidebar-tool-item.active i { color: var(--sidebar-accent); }

.side-nav {
  gap: 3px;
  padding: 0 7px;
}

.sidebar .nav-item {
  height: 54px;
  min-height: 54px;
  margin: 0;
  padding: 0 13px;
  border: 0;
  border-left: 4px solid transparent;
  border-radius: 0;
  color: var(--sidebar-text);
  background: transparent;
  font-size: 16px;
  font-weight: 500;
  box-shadow: none;
  transition: color .16s ease, background .16s ease, border-color .16s ease;
}

.sidebar .nav-item i {
  width: 18px;
  color: #cbd3dc;
  font-size: 17px;
}

.sidebar .nav-item:hover {
  color: #fff;
  background: #1b232d;
}

.sidebar .nav-item:hover i { color: #fff; }

.sidebar .nav-item.active {
  border: 1px solid #835f29;
  border-left-color: var(--sidebar-accent);
  border-radius: 8px;
  color: #fff;
  background: var(--sidebar-panel);
  box-shadow: none;
}

.sidebar .nav-item.active i { color: #fff; }

.sidebar .nav-group { margin: 0; }

.sidebar .sub-nav {
  gap: 1px;
  padding: 3px 0 6px 8px;
}

.sidebar .sub-nav-item {
  min-height: 43px;
  padding: 0 12px;
  border-radius: 7px;
  color: var(--sidebar-muted);
  font-size: 14px;
  font-weight: 500;
}

.sidebar .sub-nav-item > i {
  width: 17px;
  color: #41505f;
  font-size: 14px;
}

.sidebar .sub-nav-item:hover {
  color: #fff;
  background: #1b232d;
}

.sidebar .sub-nav-item.active {
  color: var(--sidebar-accent);
  background: transparent;
  font-weight: 700;
}

.sidebar .sub-nav-item.active > i { color: var(--sidebar-accent); }

.sidebar-bottom {
  padding: 22px 7px 0;
  background: linear-gradient(180deg, rgba(17, 24, 32, 0), var(--sidebar-bg) 18%);
}

/* 扫码联系顾问：同步 TRO 项目的半透明侧栏卡片与白色二维码底板。 */
.sidebar-qr {
  position: relative;
  overflow: hidden;
  margin: 12px 0 0;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 16px;
  background: rgba(255, 255, 255, .05);
  text-align: center;
  box-shadow: none;
}

.sidebar .sidebar-qr-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  color: #f3e7d6;
  font-size: 14px !important;
  font-weight: 700;
  letter-spacing: 0;
}

.sidebar .sidebar-qr-title i { color: var(--sidebar-accent); font-size: 14px !important; }

.sidebar-qr img {
  display: block;
  width: 132px;
  height: 132px;
  margin: 12px auto 3px;
  padding: 12px;
  border: 0;
  border-radius: 12px;
  background: #fff;
  object-fit: contain;
  box-shadow: 0 8px 20px rgba(15, 23, 42, .18);
}

.sidebar-qr small { color: #a89279; font-size: 10px; }

@media (min-width: 761px) and (max-height: 760px) {
  .sidebar-qr { margin-top: 9px; padding: 9px; border-radius: 14px; }
  .sidebar .sidebar-qr-title { font-size: 13px !important; }
  .sidebar .sidebar-qr-title i { font-size: 13px !important; }
  .sidebar-qr img { width: 92px; height: 92px; margin: 8px auto 2px; padding: 8px; border-radius: 10px; }
}

.sidebar a:focus-visible,
.sidebar button:focus-visible {
  outline: 2px solid #ffc14d;
  outline-offset: 2px;
}

@media (max-width: 1000px) and (min-width: 761px) {
  :root { --sidebar-width: 224px; }
  .sidebar .sidebar-tool-item,
  .sidebar .nav-item { font-size: 14px; }
}

@media (max-width: 760px) {
  :root { --sidebar-width: 276px; }
  /* 抽屉打开后必须压住页面内容与吸顶导航。
     部分移动端内核会把 #sharedSidebar 提升为层叠上下文，
     此时 .sidebar 自身的 z-index 会被困在这个上下文里，
     导致页面卡片和 sticky 顶栏盖住抽屉（标志被顶栏裁掉、正文压在菜单上）。
     直接把包裹层抬到页面内容之上，抽屉就不会再被压住。 */
  #sharedSidebar {
    position: relative;
    z-index: 60;
  }
  .main-area > #sharedTopbar {
    position: fixed;
    inset: 0 0 auto;
    top: 0;
    z-index: 50;
    box-shadow: 0 4px 16px rgba(16, 30, 45, .08);
  }
  #sharedTopbar .mobile-menu,
  .sidebar .mobile-close {
    display: grid;
    place-items: center;
  }
  .sidebar {
    width: var(--sidebar-width);
    transform: translateX(-100%);
  }
  /* 抽屉收起时不投影，避免阴影溢出到页面左侧形成灰带 */
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 18px 0 45px rgba(5, 10, 16, .32);
  }
  .main-area {
    margin-left: 0;
    padding-top: 58px;
  }
  .brand-lockup {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 44px;
    align-items: center;
    gap: 8px;
  }
  .brand-lockup .mobile-close {
    position: static;
    width: 44px;
    height: 44px;
    color: #fff;
    border: 1px solid #394552;
    border-radius: 8px;
    background: var(--sidebar-panel);
  }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar .nav-item { transition: none; }
}