:root{
  --bg:          #f0f4ff;
  --bg-dot:      radial-gradient(circle, #d4e0ff 1px, transparent 1px);
  --header-from: #4f7fff;
  --header-to:   #6f5fff;
  --card-bg:     #ffffff;
  --card-bd:     rgba(79,127,255,0.12);
  --card-bd-h:   rgba(79,127,255,0.4);
  --shadow:      0 2px 12px rgba(79,127,255,0.08);
  --shadow-h:    0 10px 32px rgba(79,127,255,0.18);
  --text:        #1e293b;
  --text-sub:    #64748b;
  --radius:      16px;
  --radius-sm:   10px;
  --focus-ring:  0 0 0 3px rgba(79,127,255,0.35);
  --sidebar-w:   220px;
  --sidebar-bg:  #ffffff;
  --sidebar-bd:  rgba(79,127,255,0.12);
}

*, *::before, *::after{ box-sizing:border-box; margin:0; padding:0; }

html{ -webkit-text-size-adjust:100%; text-size-adjust:100%; }

body{
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,
               "PingFang SC","Microsoft YaHei",Arial,sans-serif;
  background-color: var(--bg);
  background-image: var(--bg-dot);
  background-size: 22px 22px;
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ── 布局 ── */
.app-layout{
  display: flex;
  flex: 1;
  min-height: 0;
}

/* ── 侧边栏 ── */
.sidebar{
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-bd);
  padding: 24px 0;
  overflow-y: auto;
  position: sticky;
  top: 0;
  max-height: 100vh;
  max-height: 100dvh;
  transition: transform .3s ease;
  z-index: 30;
}

.sidebar-title{
  font-size: 13px;
  font-weight: 700;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0 20px 12px;
  border-bottom: 1px solid var(--sidebar-bd);
  margin-bottom: 8px;
}

.sidebar-nav{ list-style: none; padding: 0; margin: 0; }

.sidebar-item{
  display: block;
  width: 100%;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--text);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
  border-radius: 0;
  font-family: inherit;
  position: relative;
}

.sidebar-item:hover{ background: rgba(79,127,255,0.06); }

.sidebar-item.active{
  color: #4f7fff;
  font-weight: 600;
  background: rgba(79,127,255,0.1);
}

.sidebar-item.active::before{
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: #4f7fff;
  border-radius: 0 3px 3px 0;
}

.sidebar-count{
  float: right;
  font-size: 11px;
  color: var(--text-sub);
  background: var(--bg);
  padding: 1px 7px;
  border-radius: 99px;
  font-weight: 400;
}

.sidebar-arrow{
  float: right;
  font-size: 10px;
  color: var(--text-sub);
  margin-left: 6px;
}

.sidebar-child{
  padding-left: 36px;
  font-size: 13px;
}

.sidebar-toggle{
  display: none;
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 40;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--sidebar-bd);
  background: #fff;
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.sidebar-overlay{
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 29;
}

/* ── 顶部 ── */
.header{
  background: linear-gradient(135deg, #9d9c9c, #f39d60);
  padding: max(36px, calc(env(safe-area-inset-top,0px) + 22px))
           max(28px, env(safe-area-inset-right,0px))
           28px
           max(28px, env(safe-area-inset-left,0px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: 0 4px 20px rgba(79,127,255,0.25);
}

.header-left h1{
  font-size: clamp(1.15rem,3vw,1.45rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em
  ali;
}

.header-left p{
  font-size: 0.78rem;
  color: rgba(255,255,255,0.7);
  margin-top: 3px;
}

.header-badge{
  font-size: 0.72rem;
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 99px;
  padding: 4px 12px;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── 主区域 ── */
.page-main{ flex: 1; }

.container{
  max-width: 1100px;
  margin: auto;
  padding: 28px
           max(24px, env(safe-area-inset-left,0px))
           48px
           max(24px, env(safe-area-inset-right,0px));
}

.container.sub-grid{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

/* ── 卡片 ── */
.card{
  position: relative;
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--radius);
  padding: 24px 16px 20px;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  box-shadow: var(--shadow);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

/* 顶部彩色条 */
.card::before{
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--stripe);
  transition: height .2s ease;
}

@media (prefers-reduced-motion:reduce){
  .card, .card::before, .icon{ transition-duration:0.01ms !important; }
}

@media (hover:hover) and (pointer:fine){
  .card:hover{
    transform: translateY(-5px);
    box-shadow: var(--shadow-h);
    border-color: var(--card-bd-h);
  }
  .card:hover::before{ height: 5px; }
  .card:hover .icon{ transform: scale(1.08); }
}

@media (prefers-reduced-motion:no-preference){
  .card:active{ transform: scale(0.97); box-shadow: var(--shadow); }
}

.card:focus{ outline: none; }
.card:focus-visible{ box-shadow: var(--focus-ring); border-color: var(--header-from); }

/* ── 图标 ── */
.icon{
  width: 52px;
  height: 52px;
  border-radius: 50%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  line-height: 1;
  background: var(--stripe-soft);
  border: 1.5px solid var(--stripe-bd);
  transition: transform .2s ease;
}

/* ── 文字 ── */
.service-group{
  margin-bottom: 32px;
  display: block;
}

.group-title{
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--card-bd);
}

.group-subtitle{
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  margin: 16px 0 12px;
}

.group-cards{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card-title{
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-top: 14px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.card-desc{
  font-size: 12px;
  color: var(--text-sub);
  margin-top: 5px;
  line-height: 1.45;
  word-break: break-word;
}

/* ── 页脚 ── */
.site-footer{
  text-align: center;
  padding: 14px
           max(16px, env(safe-area-inset-left,0px))
           max(22px, calc(14px + env(safe-area-inset-bottom,0px)))
           max(16px, env(safe-area-inset-right,0px));
  font-size: 12px;
  color: var(--text-sub);
  opacity: 0.7;
}

/* ── 移动端 sidebar ── */
@media (max-width:768px){
  .sidebar{
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    transform: translateX(-100%);
    box-shadow: 4px 0 20px rgba(0,0,0,0.1);
  }
  .sidebar.open{
    transform: translateX(0);
  }
  .sidebar-overlay.open{
    display: block;
  }
  .sidebar-toggle{
    display: flex;
  }
  .header{
    padding-left: max(60px, calc(env(safe-area-inset-left,0px) + 14px));
  }
  .group-cards{
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ── 手机 ≤640px ── */
@media (max-width:640px){
  .header{
    padding-top: max(22px, calc(env(safe-area-inset-top,0px) + 14px));
    padding-bottom: 18px;
    padding-left:  max(16px, env(safe-area-inset-left,0px));
    padding-right: max(16px, env(safe-area-inset-right,0px));
  }
  .container{
    padding: 20px max(14px, env(safe-area-inset-left,0px))
             32px  max(14px, env(safe-area-inset-right,0px));
  }
  .container.sub-grid{
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 12px 10px;
  }
  .group-cards .card{ padding: 20px 10px 16px; }
  .icon{ width: 44px; height: 44px; font-size: 20px; }
  .card-title{ font-size: clamp(0.82rem, 3vw, 0.95rem); }
  .card-desc{  font-size: clamp(0.7rem,  2.6vw, 0.78rem); }
}

@media (max-width:380px){
  .container.sub-grid{ gap: 10px 8px; }
  .card{ padding: 16px 8px 14px; }
}