/* === 数据控制中心驾驶舱 v2 === */
/* 调色板:深色 + 主站 蓝 #003b75 / 绿 #00a870 / 橙 #ff8a00 */
/* 关键:nav 不改样式,只有 main + drawer 用深色主题 */
/* CSS 变量必须在 body 层级定义,让 main + aside 抽屉都能继承 */
.materials-page.product-page--data-center,
.product-page--data-center {
  /* 主品牌色(派生自主站) */
  --dc-blue-deep: #001a36;
  --dc-blue: #003b75;
  --dc-blue-bright: #1e6bbf;
  --dc-blue-soft: rgba(0, 59, 117, 0.18);

  /* 中性 */
  --dc-bg-0: #050b18;
  --dc-bg-1: #0a1830;
  --dc-bg-2: #112544;
  --dc-card: rgba(17, 37, 68, 0.72);
  --dc-card-hover: rgba(20, 44, 80, 0.88);
  --dc-border: rgba(60, 110, 175, 0.22);
  --dc-border-bright: rgba(0, 168, 112, 0.45);
  --dc-divider: rgba(60, 110, 175, 0.14);

  /* 文本 */
  --dc-text: #f3f7ff;
  --dc-text-muted: #aebed8;
  --dc-text-dim: #7c8fac;

  /* 状态(主站品牌派生) */
  --dc-accent: #00a870;          /* 主绿 — 节能/在线 */
  --dc-accent-bright: #1edc9d;
  --dc-accent-glow: rgba(0, 168, 112, 0.5);
  --dc-warn: #ff8a00;            /* 主橙 — 告警 */
  --dc-warn-bright: #ffb547;
  --dc-warn-glow: rgba(255, 138, 0, 0.5);
  --dc-danger: #c0392b;          /* 主危险红 — 离线/严重 */
  --dc-danger-glow: rgba(192, 57, 43, 0.5);

  /* 图形 */
  --dc-shadow-card: 0 8px 24px rgba(0, 13, 30, 0.5);
  --dc-shadow-card-hover: 0 14px 40px rgba(0, 13, 30, 0.6), 0 0 0 1px var(--dc-border-bright);
  --dc-radius-sm: 8px;
  --dc-radius-md: 12px;
  --dc-radius-lg: 16px;
}

/* main 区域用深色背景,nav/footer 保持主站样式 */
.materials-page.product-page--data-center main,
.product-page--data-center main {
  background: #050b18;
  color: var(--dc-text);
  min-height: calc(100vh - 80px);
}

/* ---- 导航顶栏(沿用主站 styles.css 的浅色样式,不要覆盖) ---- */

/* 语言切换 pill 保持主站样式 — 不要动 */

/* CTA section 标题 — 主站 .section-heading h2 用蓝色,在深色背景下看不清 */
.materials-page.product-page--data-center .section-heading h2,
.product-page--data-center .section-heading h2 {
  color: var(--dc-text);
}
.materials-page.product-page--data-center .section-heading p,
.product-page--data-center .section-heading p {
  color: var(--dc-text-muted);
}
/* site-section 标题 */
.materials-page.product-page--data-center .dc-sites-header h2,
.product-page--data-center .dc-sites-header h2 {
  color: var(--dc-text);
}
.materials-page.product-page--data-center .dc-sites-header p,
.product-page--data-center .dc-sites-header p {
  color: var(--dc-text-muted);
}

/* ===================================================
   Hero 区
   =================================================== */
.dc-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 40px;
  align-items: center;
  padding: 88px 6vw 56px;
  max-width: 1440px;
  margin: 0 auto;
  position: relative;
}

.dc-hero::before {
  content: "";
  position: absolute;
  top: -100px;
  left: -10%;
  width: 60%;
  height: 380px;
  background: radial-gradient(ellipse at center, rgba(0, 168, 112, 0.18), transparent 65%);
  pointer-events: none;
  z-index: 0;
}

.dc-hero::after {
  content: "";
  position: absolute;
  top: -80px;
  right: -10%;
  width: 50%;
  height: 360px;
  background: radial-gradient(ellipse at center, rgba(30, 107, 191, 0.14), transparent 65%);
  pointer-events: none;
  z-index: 0;
}

.dc-hero-text {
  position: relative;
  z-index: 1;
}

.dc-hero-text .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 168, 112, 0.12);
  border: 1px solid var(--dc-border-bright);
  color: var(--dc-accent-bright);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 6px 14px 6px 28px;
  border-radius: 999px;
  margin: 0 0 18px;
  line-height: 1;
  position: relative;
}

.dc-hero-text .eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--dc-accent);
  box-shadow: 0 0 10px var(--dc-accent-glow);
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
}

.dc-hero-text h1 {
  font-size: 48px;
  line-height: 1.1;
  margin: 0 0 18px;
  font-weight: 800;
  color: var(--dc-text);
  letter-spacing: -0.01em;
}

.dc-hero-text h1 .dc-hero-grad {
  background: linear-gradient(120deg, var(--dc-accent-bright) 0%, var(--dc-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.dc-hero-text p {
  color: #b6c4dc;
  font-size: 16px;
  line-height: 1.75;
  max-width: 540px;
  margin: 0 0 22px;
}

.dc-hero-meta {
  display: flex;
  gap: 14px;
  margin-bottom: 28px;
  flex-wrap: wrap;
  align-items: center;
}

.dc-live-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 168, 112, 0.1);
  color: var(--dc-accent-bright);
  border: 1px solid var(--dc-border-bright);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
}

.dc-live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dc-accent);
  box-shadow: 0 0 12px var(--dc-accent-glow);
  animation: dc-pulse 1.6s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes dc-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.55; transform: scale(1.45); }
}

.dc-updated {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--dc-text-muted);
  font-size: 13px;
}

.dc-updated strong {
  color: var(--dc-text);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

/* 按钮 */
.materials-page.product-page--data-center .button-primary,
.product-page--data-center .button-primary {
  background: linear-gradient(135deg, var(--dc-accent) 0%, var(--dc-accent-bright) 100%);
  color: #ffffff;
  border: none;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: var(--dc-radius-md);
  position: relative;
  overflow: hidden;
  box-shadow: 0 6px 18px rgba(0, 168, 112, 0.28);
  transition: transform 200ms ease, box-shadow 200ms ease, filter 200ms ease;
}
.materials-page.product-page--data-center .button-primary::after,
.product-page--data-center .button-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(255,255,255,0.35), transparent 50%);
  opacity: 0;
  transition: opacity 220ms ease;
}
.materials-page.product-page--data-center .button-primary:hover,
.product-page--data-center .button-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(0, 168, 112, 0.42);
  filter: brightness(1.05);
}
.materials-page.product-page--data-center .button-primary:active,
.product-page--data-center .button-primary:active {
  transform: translateY(0);
}
.materials-page.product-page--data-center .button-primary:active::after,
.product-page--data-center .button-primary:active::after {
  opacity: 1;
  transition: opacity 60ms ease;
}

.materials-page.product-page--data-center .button-link,
.product-page--data-center .button-link {
  color: var(--dc-accent-bright);
  background: transparent;
  border: 1px solid var(--dc-border);
  padding: 12px 24px;
  border-radius: var(--dc-radius-md);
  transition: all 200ms ease;
}
.materials-page.product-page--data-center .button-link:hover,
.product-page--data-center .button-link:hover {
  border-color: var(--dc-border-bright);
  background: rgba(0, 168, 112, 0.08);
}

/* ===================================================
   KPI 卡片
   =================================================== */
.dc-hero-kpis {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  position: relative;
  z-index: 1;
  align-self: stretch;
  align-content: center;
}

.dc-kpi-card {
  background: linear-gradient(160deg, rgba(15, 32, 58, 0.85), rgba(7, 18, 36, 0.7));
  border: 1px solid var(--dc-border);
  border-radius: var(--dc-radius-lg);
  padding: 22px 22px 18px;
  min-height: 122px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 240ms ease, box-shadow 240ms ease, border-color 240ms ease;
}

.dc-kpi-card::before {
  content: "";
  position: absolute;
  top: -36px;
  right: -36px;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.7;
}

.dc-kpi-card[data-kpi="sites"]::before      { background: radial-gradient(circle, rgba(0,168,112,0.32), transparent 70%); }
.dc-kpi-card[data-kpi="devices"]::before    { background: radial-gradient(circle, rgba(30,107,191,0.32), transparent 70%); }
.dc-kpi-card[data-kpi="saving"]::before     { background: radial-gradient(circle, rgba(0,168,112,0.32), transparent 70%); }
.dc-kpi-card[data-kpi="alerts"]::before     { background: radial-gradient(circle, rgba(255,138,0,0.32), transparent 70%); }

.dc-kpi-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--dc-shadow-card-hover);
  border-color: var(--dc-border-bright);
}

.dc-kpi-label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--dc-text-muted);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.dc-kpi-label::before {
  content: "";
  width: 4px;
  height: 14px;
  border-radius: 2px;
  background: var(--dc-accent);
  flex-shrink: 0;
}

.dc-kpi-card[data-kpi="alerts"] .dc-kpi-label::before { background: var(--dc-warn); }
.dc-kpi-card[data-kpi="devices"] .dc-kpi-label::before { background: var(--dc-blue-bright); }

.dc-kpi-value {
  display: block;
  font-size: 34px;
  font-weight: 800;
  color: var(--dc-text);
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
  letter-spacing: -0.01em;
  transition: color 200ms ease;
}

.dc-kpi-value small {
  font-size: 14px;
  color: var(--dc-text-muted);
  font-weight: 500;
  margin-left: 4px;
}

.dc-kpi-value.is-flash {
  animation: dc-value-flash 0.6s ease;
}

@keyframes dc-value-flash {
  0%   { color: var(--dc-text); transform: scale(1); }
  35%  { color: var(--dc-accent-bright); transform: scale(1.06); text-shadow: 0 0 12px var(--dc-accent-glow); }
  100% { color: var(--dc-text); transform: scale(1); }
}

.dc-kpi-trend {
  position: absolute;
  top: 22px;
  right: 22px;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.dc-kpi-trend-up {
  background: rgba(0, 168, 112, 0.15);
  color: var(--dc-accent-bright);
  border: 1px solid rgba(0, 168, 112, 0.3);
}

.dc-kpi-trend-down {
  background: rgba(255, 138, 0, 0.15);
  color: var(--dc-warn-bright);
  border: 1px solid rgba(255, 138, 0, 0.3);
}

/* ===================================================
   项目网格区
   =================================================== */
.dc-sites {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px 6vw 72px;
}

.dc-sites-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 26px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--dc-divider);
}

.dc-sites-header h2 {
  font-size: 22px;
  color: var(--dc-text);
  margin: 0 0 6px;
  font-weight: 700;
  letter-spacing: -0.005em;
}

.dc-sites-header h2 .dc-eyebrow-tag {
  display: inline-block;
  background: rgba(0, 168, 112, 0.14);
  color: var(--dc-accent-bright);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
  margin-right: 12px;
  vertical-align: middle;
  border: 1px solid var(--dc-border-bright);
}

.dc-sites-header p {
  color: var(--dc-text-muted);
  font-size: 14px;
  margin: 0;
  max-width: 540px;
  text-align: right;
  line-height: 1.55;
}

.dc-sites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

/* 项目卡 */
.dc-site-card {
  background: linear-gradient(160deg, var(--dc-card), rgba(10, 24, 48, 0.4));
  border: 1px solid var(--dc-border);
  border-radius: var(--dc-radius-lg);
  padding: 20px 22px 18px;
  cursor: pointer;
  transition: transform 240ms cubic-bezier(0.2, 0.7, 0.2, 1),
              box-shadow 240ms ease,
              border-color 240ms ease,
              background 240ms ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.dc-site-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 0 2px 2px 0;
  background: var(--dc-accent);
  opacity: 0;
  transition: opacity 200ms ease;
}

.dc-site-card[data-status="warn"]::after { background: var(--dc-warn); }
.dc-site-card[data-status="offline"]::after { background: var(--dc-danger); }

.dc-site-card:hover,
.dc-site-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--dc-border-bright);
  background: linear-gradient(160deg, var(--dc-card-hover), rgba(20, 44, 80, 0.6));
  box-shadow: 0 14px 36px rgba(0, 13, 30, 0.5);
  outline: none;
}

.dc-site-card:hover::after,
.dc-site-card:focus-visible::after {
  opacity: 1;
}

.dc-site-card:active {
  transform: translateY(-1px) scale(0.995);
}

.dc-site-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.dc-site-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 11px;
  border-radius: 999px;
}

.dc-status-online {
  background: rgba(0, 168, 112, 0.14);
  color: var(--dc-accent-bright);
  border: 1px solid rgba(0, 168, 112, 0.3);
}

.dc-status-warn {
  background: rgba(255, 138, 0, 0.14);
  color: var(--dc-warn-bright);
  border: 1px solid rgba(255, 138, 0, 0.32);
}

.dc-status-offline {
  background: rgba(192, 57, 43, 0.16);
  color: #ff8c7a;
  border: 1px solid rgba(192, 57, 43, 0.36);
}

.dc-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}

.dc-status-online .dc-status-dot {
  animation: dc-pulse 1.8s ease-in-out infinite;
}

.dc-site-id {
  color: var(--dc-text-dim);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.dc-site-name {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 18px;
  color: var(--dc-text);
  line-height: 1.35;
  letter-spacing: -0.005em;
}

.dc-site-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 14px;
  flex: 1;
}

.dc-site-metric {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--dc-divider);
  border-radius: var(--dc-radius-sm);
  padding: 10px 12px;
  min-height: 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: background 200ms ease, border-color 200ms ease;
}

.dc-site-card:hover .dc-site-metric {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--dc-border);
}

.dc-site-metric-label {
  display: block;
  color: var(--dc-text-dim);
  font-size: 11px;
  margin-bottom: 4px;
  font-weight: 500;
}

.dc-site-metric-value {
  display: block;
  color: var(--dc-text);
  font-size: 18px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.dc-site-metric-value small {
  font-size: 11px;
  color: var(--dc-text-muted);
  font-weight: 500;
  margin-left: 2px;
}

.dc-site-metric-warn .dc-site-metric-value {
  color: var(--dc-warn-bright);
}

.dc-site-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--dc-divider);
  color: var(--dc-text-muted);
  font-size: 12px;
  font-weight: 500;
}

.dc-site-card:hover .dc-site-foot {
  color: var(--dc-accent-bright);
}

.dc-site-foot .dc-arrow {
  transition: transform 200ms ease;
  display: inline-block;
}

.dc-site-card:hover .dc-arrow {
  transform: translateX(4px);
}

/* ===================================================
   抽屉详情
   =================================================== */
.dc-drawer {
  position: fixed;
  inset: 0;
  z-index: 1000;
}

.dc-drawer[hidden] {
  display: none;
}

.dc-drawer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 16, 0.65);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 280ms ease;
}

.dc-drawer.is-open .dc-drawer-backdrop {
  opacity: 1;
}

.dc-drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(960px, 94vw);
  height: 100vh;
  background: linear-gradient(180deg, #0a1830 0%, #050b18 100%);
  border-left: 1px solid var(--dc-border);
  box-shadow: -28px 0 72px rgba(0, 0, 0, 0.6);
  transform: translateX(100%);
  transition: transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1);
  overflow-y: auto;
  color: var(--dc-text);
}

.dc-drawer.is-open .dc-drawer-panel {
  transform: translateX(0);
}

.dc-drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 30px 36px 22px;
  border-bottom: 1px solid var(--dc-divider);
  background: linear-gradient(180deg, rgba(0,168,112,0.04), transparent);
}

.dc-drawer-header .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 168, 112, 0.1);
  border: 1px solid var(--dc-border-bright);
  color: var(--dc-accent-bright);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 999px;
  margin: 0 0 10px;
}

.dc-drawer-header h3 {
  margin: 0;
  font-size: 26px;
  font-weight: 800;
  color: var(--dc-text);
  letter-spacing: -0.01em;
}

.dc-drawer-close {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--dc-border);
  color: var(--dc-text);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
  transition: all 200ms ease;
  flex-shrink: 0;
}

.dc-drawer-close:hover {
  border-color: var(--dc-warn);
  color: var(--dc-warn);
  background: rgba(255, 138, 0, 0.08);
  transform: rotate(90deg);
}

.dc-drawer-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 22px 36px;
  border-bottom: 1px solid var(--dc-divider);
  background: rgba(0, 0, 0, 0.15);
}

.dc-summary-cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0 18px;
  border-right: 1px solid var(--dc-divider);
}

.dc-summary-cell:last-child {
  border-right: none;
}

.dc-summary-cell span {
  color: var(--dc-text-muted);
  font-size: 12px;
  font-weight: 500;
}

.dc-summary-cell strong {
  color: var(--dc-text);
  font-size: 22px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.dc-drawer-panels {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 16px;
  padding: 22px 36px 36px;
}

.dc-panel {
  background: linear-gradient(160deg, var(--dc-card), rgba(10, 24, 48, 0.4));
  border: 1px solid var(--dc-border);
  border-radius: var(--dc-radius-md);
  padding: 18px 20px;
  transition: border-color 200ms ease;
}

.dc-panel:hover {
  border-color: var(--dc-border-bright);
}

.dc-panel h4 {
  margin: 0 0 14px;
  color: var(--dc-text);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--dc-divider);
  text-transform: uppercase;
}

.dc-panel h4::before {
  content: "";
  width: 3px;
  height: 14px;
  border-radius: 2px;
  background: var(--dc-accent);
  flex-shrink: 0;
}

.dc-panel-alerts h4::before { background: var(--dc-warn); }
.dc-panel-devices h4::before { background: var(--dc-blue-bright); }
.dc-panel-energy h4::before { background: var(--dc-accent-bright); }

.dc-panel-temp,
.dc-panel-energy {
  grid-column: span 2;
}

.dc-panel-legend {
  display: flex;
  gap: 18px;
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--dc-text-muted);
}

.dc-legend-temp {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.dc-legend-hum {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.dc-legend-temp::before {
  content: "";
  width: 10px;
  height: 2px;
  background: var(--dc-warn);
  border-radius: 1px;
}

.dc-legend-hum::before {
  content: "";
  width: 10px;
  height: 2px;
  background: var(--dc-blue-bright);
  border-radius: 1px;
}

.dc-chart {
  width: 100%;
  height: 200px;
  display: block;
}

/* 设备列表 */
.dc-device-list,
.dc-alert-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 340px;
  overflow-y: auto;
}

.dc-device-row {
  display: grid;
  grid-template-columns: 12px 1fr auto auto auto;
  gap: 12px;
  align-items: center;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--dc-divider);
  border-radius: var(--dc-radius-sm);
  font-size: 13px;
  transition: background 200ms ease, border-color 200ms ease;
}

.dc-device-row:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--dc-border);
}

.dc-device-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.dc-device-online .dc-device-dot {
  background: var(--dc-accent);
  box-shadow: 0 0 10px var(--dc-accent-glow);
}

.dc-device-warn .dc-device-dot {
  background: var(--dc-warn);
  box-shadow: 0 0 10px var(--dc-warn-glow);
}

.dc-device-offline .dc-device-dot {
  background: var(--dc-danger);
  box-shadow: 0 0 10px var(--dc-danger-glow);
}

.dc-device-type {
  color: var(--dc-text);
  font-weight: 600;
}

.dc-device-id {
  color: var(--dc-text-muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.dc-device-status {
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
}

.dc-device-online .dc-device-status {
  background: rgba(0, 168, 112, 0.14);
  color: var(--dc-accent-bright);
}

.dc-device-warn .dc-device-status {
  background: rgba(255, 138, 0, 0.14);
  color: var(--dc-warn-bright);
}

.dc-device-offline .dc-device-status {
  background: rgba(192, 57, 43, 0.14);
  color: #ff8c7a;
}

.dc-device-runtime {
  color: var(--dc-text-dim);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

/* 告警列表 */
.dc-alert-item {
  display: flex;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--dc-radius-sm);
  font-size: 13px;
  line-height: 1.5;
  border-left: 3px solid var(--dc-text-dim);
  background: rgba(255, 255, 255, 0.025);
  transition: background 200ms ease;
}

.dc-alert-item:hover {
  background: rgba(255, 255, 255, 0.06);
}

.dc-alert-warn {
  border-left-color: var(--dc-warn);
  background: rgba(255, 138, 0, 0.08);
}

.dc-alert-crit {
  border-left-color: var(--dc-danger);
  background: rgba(192, 57, 43, 0.12);
}

.dc-alert-info {
  border-left-color: var(--dc-blue-bright);
  background: rgba(30, 107, 191, 0.08);
}

.dc-alert-code {
  color: var(--dc-text);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  align-self: flex-start;
}

.dc-alert-msg {
  color: var(--dc-text-muted);
}

.dc-alert-empty {
  padding: 28px 14px;
  text-align: center;
  color: var(--dc-text-muted);
  font-size: 13px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px dashed var(--dc-border);
  border-radius: var(--dc-radius-sm);
}

/* ===================================================
   响应式
   =================================================== */
@media (max-width: 960px) {
  .dc-hero {
    grid-template-columns: 1fr;
    padding: 60px 5vw 32px;
    gap: 36px;
  }
  .dc-hero-text h1 { font-size: 34px; }
  .dc-sites-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .dc-sites-header p {
    text-align: left;
  }
  .dc-drawer-summary {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .dc-summary-cell {
    border-right: none;
    padding: 4px 0;
  }
  .dc-drawer-panels {
    grid-template-columns: 1fr;
  }
  .dc-panel-temp,
  .dc-panel-energy {
    grid-column: span 1;
  }
}

@media (max-width: 600px) {
  .dc-sites-grid {
    grid-template-columns: 1fr;
  }
  .dc-drawer-summary {
    grid-template-columns: 1fr 1fr;
  }
  .dc-drawer-panels {
    padding: 18px 20px 24px;
  }
  .dc-drawer-header {
    padding: 22px 20px 18px;
  }
}

/* === 2026-08-12 数据中心一致性与对齐层 === */
.product-page--data-center main {
  background:
    radial-gradient(circle at 12% 8%, rgba(0, 168, 112, 0.1), transparent 28%),
    radial-gradient(circle at 88% 10%, rgba(30, 107, 191, 0.11), transparent 30%),
    var(--dc-bg-0);
}

.dc-hero,
.dc-sites,
.dc-cta {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
}

.dc-hero {
  min-height: 610px;
  align-items: center;
}

.dc-hero-text p,
.dc-sites-header p,
.dc-site-foot,
.dc-panel-legend,
.dc-device-type,
.dc-alert-msg {
  color: var(--dc-text-muted);
}

.dc-hero-kpis {
  grid-auto-rows: 1fr;
}

.dc-kpi-card {
  min-height: 148px;
  padding: 24px;
}

.dc-kpi-value,
.dc-site-metric-value,
.dc-updated strong {
  font-variant-numeric: tabular-nums;
}

.dc-sites-grid {
  align-items: stretch;
}

.dc-site-card {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.dc-site-metrics {
  grid-auto-rows: 1fr;
}

.dc-site-metric {
  min-height: 92px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.dc-site-foot {
  margin-top: auto;
}

.dc-drawer-panel {
  color: var(--dc-text);
}

.dc-drawer-summary,
.dc-drawer-panels {
  align-items: stretch;
}

.dc-panel {
  min-height: 100%;
}

.dc-site-card:focus-visible,
.dc-drawer-close:focus-visible,
.product-page--data-center .button:focus-visible {
  outline: 2px solid var(--dc-accent-bright);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(0, 168, 112, 0.18);
}

@media (max-width: 960px) {
  .dc-hero {
    min-height: auto;
    padding-top: 92px;
  }

  .dc-kpi-card {
    min-height: 136px;
  }
}

@media (max-width: 600px) {
  .dc-hero {
    padding-inline: 18px;
  }

  .dc-hero > *,
  .dc-hero-text,
  .dc-hero-kpis {
    min-width: 0;
    max-width: 100%;
  }

  .dc-hero-text h1 {
    font-size: clamp(32px, 9.5vw, 42px);
    overflow-wrap: anywhere;
    word-break: break-word;
    text-wrap: wrap;
  }

  .dc-hero-text p,
  .product-page--data-center .button {
    overflow-wrap: anywhere;
    word-break: break-word;
    text-wrap: wrap;
    white-space: normal;
  }

  .dc-hero-kpis {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .dc-kpi-card {
    min-height: 128px;
    padding: 18px;
  }

  .dc-kpi-value {
    font-size: 28px;
  }

  .dc-site-metrics {
    grid-template-columns: 1fr 1fr;
  }

  .dc-sites {
    padding-inline: 18px;
  }

  .dc-sites-header h2 {
    font-size: 24px;
  }

  .dc-sites-header p {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .dc-live-dot,
  .dc-kpi-value.is-flash {
    animation: none !important;
  }
}