/* =====================================================
   深圳天邦达科技有限公司 | 2025 能源革新官网视觉系统
   Theme: Energy Flow · 智慧储能 · 数据驱动
   ===================================================== */

:root {
  /* 色彩系统 - 深空配色 + 霓虹能源 */
  --color-page: #040c1c;
  --color-page-secondary: #061932;
  --color-surface: rgba(11, 27, 43, 0.82);
  --color-surface-strong: #102438;
  --color-surface-soft: rgba(16, 40, 60, 0.55);
  --color-border: rgba(76, 194, 255, 0.15);
  --color-border-strong: rgba(76, 194, 255, 0.32);
  --color-primary: #48f2c2;
  --color-primary-dark: #16c7a1;
  --color-primary-soft: rgba(72, 242, 194, 0.16);
  --color-secondary: #5a91ff;
  --color-secondary-soft: rgba(90, 145, 255, 0.18);
  --color-accent: #ffd25f;
  --color-accent-soft: rgba(255, 210, 95, 0.18);
  --color-text: #e7f1ff;
  --color-text-strong: #f5fbff;
  --color-text-muted: #a7bbd4;
  --color-text-soft: #7d92af;
  --color-success: #52e0b6;
  --color-warning: #ffb347;
  --color-danger: #ff6b7a;
  --color-grid-line: rgba(46, 102, 160, 0.18);

  /* 阴影与光晕 */
  --shadow-soft: 0 18px 48px rgba(7, 20, 37, 0.45);
  --shadow-strong: 0 32px 90px rgba(3, 12, 26, 0.68);
  --overlay-gradient: radial-gradient(circle at 20% 20%, rgba(80, 210, 255, 0.16), transparent 45%), radial-gradient(circle at 80% -10%, rgba(72, 242, 194, 0.18), transparent 40%);
  --hero-gradient: linear-gradient(130deg, rgba(6, 25, 55, 0.85) 0%, rgba(7, 45, 73, 0.92) 52%, rgba(12, 68, 74, 0.9) 100%);
  --glass-blur: saturate(140%) blur(18px);

  /* 字体与排版 */
  --font-family-display: "DIN Alternate", "Rajdhani", "Orbitron", "Segoe UI", sans-serif;
  --font-family-main: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;

  /* 间距系统 */
  --spacing-xs: 6px;
  --spacing-sm: 12px;
  --spacing-md: 20px;
  --spacing-lg: 28px;
  --spacing-xl: 40px;
  --spacing-2xl: 64px;
  --spacing-3xl: 96px;

  /* 圆角 */
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-xl: 38px;
  --radius-round: 999px;

  /* 动效 */
  --transition-fast: 160ms ease;
  --transition-base: 260ms ease;
  --transition-slow: 460ms ease;

  /* 容器宽度 */
  --container-width: 1200px;
  --container-wide: 1360px;
  --container-narrow: 960px;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-base: 0ms;
    --transition-slow: 0ms;
  }
}

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

html {
  scroll-behavior: smooth;
  min-height: 100%;
  background: var(--color-page);
}

body {
  font-family: var(--font-family-main);
  background: linear-gradient(180deg, #040c1c 0%, #051326 45%, #05162d 100%);
  color: var(--color-text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: var(--overlay-gradient);
  opacity: 0.85;
  z-index: -1;
}

body.loaded {
  opacity: 1;
  transition: opacity 600ms ease;
}

img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius-md);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover {
  color: var(--color-text-strong);
}

ul {
  list-style: none;
}

main {
  margin-top: 92px;
}

section {
  position: relative;
  padding: var(--spacing-2xl) 0;
}

.section {
  padding: var(--spacing-2xl) 0;
}

.section-dark {
  background: rgba(5, 18, 32, 0.88);
}

.section-light {
  background: rgba(7, 24, 42, 0.72);
}

.section-contrast {
  background: linear-gradient(135deg, rgba(10, 41, 68, 0.9), rgba(3, 16, 30, 0.9));
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  max-width: var(--container-wide);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section-title {
  margin-bottom: var(--spacing-xl);
  max-width: 780px;
}

.section-title .tagline {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--radius-round);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.section-title h2 {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: 1px;
  line-height: 1.2;
  color: var(--color-text-strong);
  margin-bottom: 16px;
}

.section-title p {
  color: var(--color-text-muted);
  font-size: 17px;
}

/* ========== 网格与布局工具 ========== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-6 {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-column {
  display: flex;
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.split-grid {
  display: grid;
  gap: var(--spacing-xl);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
}

/* ========== 按钮与标签 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-round);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.4px;
  cursor: pointer;
  transition: var(--transition-base);
  text-transform: none;
}

.btn-primary {
  background: linear-gradient(120deg, #48f2c2, #28d0ff);
  color: #041321;
  box-shadow: 0 12px 32px rgba(72, 242, 194, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 46px rgba(72, 242, 194, 0.4);
}

.btn-outline {
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-primary-soft);
  color: var(--color-text-strong);
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.02);
}

.btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: 17px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-round);
  background: rgba(72, 242, 194, 0.12);
  color: var(--color-primary);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-round);
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-muted);
  font-size: 14px;
}

.chip::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(72, 242, 194, 0.18);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: var(--radius-round);
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-soft);
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.highlight {
  color: var(--color-primary);
  font-weight: 600;
}

/* ========== 卡片与玻璃面板 ========== */
.card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(72, 242, 194, 0.08), rgba(90, 145, 255, 0.06));
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-strong);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(72, 242, 194, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text-strong);
  margin-bottom: 12px;
}

.card-subtitle {
  color: var(--color-text-muted);
  font-size: 16px;
  margin-bottom: var(--spacing-md);
}

.card-text {
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.72;
}

.card-footer {
  margin-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-soft);
  font-size: 14px;
}

.glass-panel {
  position: relative;
  background: rgba(8, 24, 40, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-soft);
  backdrop-filter: var(--glass-blur);
}

/* ========== 顶部导航 ========== */
header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  background: rgba(5, 18, 32, 0.78);
  border-bottom: 1px solid rgba(72, 242, 194, 0.08);
  backdrop-filter: var(--glass-blur);
  transition: background var(--transition-slow), border-color var(--transition-slow), box-shadow var(--transition-slow);
}

body.scrolled header {
  background: rgba(5, 18, 32, 0.92);
  border-bottom-color: rgba(72, 242, 194, 0.18);
  box-shadow: 0 22px 42px rgba(5, 10, 25, 0.45);
}

.header-container {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: var(--spacing-sm) 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
  align-items: flex-start;
}

.logo {
  display: inline-block;
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-text-strong);
}

.logo-tagline {
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-text-soft);
}



.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 24px;
}

.nav-item {
  position: relative;
}

.nav-link {
  position: relative;
  font-size: 15px;
  color: var(--color-text-muted);
  padding: 10px 4px;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  border-radius: var(--radius-round);
  background: linear-gradient(90deg, transparent, #48f2c2, transparent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  padding: 14px;
  border-radius: var(--radius-md);
  background: rgba(8, 24, 40, 0.96);
  border: 1px solid rgba(72, 242, 194, 0.12);
  box-shadow: var(--shadow-soft);
  display: none;
  flex-direction: column;
  gap: 8px;
}

.dropdown:hover .dropdown-menu {
  display: flex;
}

.dropdown.hover .dropdown-menu {
  display: flex;
}

.dropdown-item {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 14px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.dropdown-item:hover {
  background: rgba(72, 242, 194, 0.12);
  color: var(--color-primary);
}

.nav-actions {
  display: none;
  align-items: center;
  gap: 16px;
}

.hamburger {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.hamburger span {
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ========== 英雄区 ========== */
.hero {
  padding: 160px 0 120px;
}

.hero-energy {
  position: relative;
  overflow: hidden;
  background: radial-gradient(140% 120% at 20% 20%, rgba(24, 87, 117, 0.68), transparent), radial-gradient(80% 130% at 85% 10%, rgba(72, 242, 194, 0.22), transparent 65%), rgba(5, 18, 32, 0.9);
}

.hero-energy::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(120deg, rgba(72, 242, 194, 0.04), rgba(72, 242, 194, 0.04) 2px, transparent 2px, transparent 80px);
  opacity: 0.35;
}

.hero-energy::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--hero-gradient);
  opacity: 0.85;
}

.hero-energy .container {
  position: relative;
  z-index: 2;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  gap: var(--spacing-2xl);
  align-items: center;
}

.hero-content h1 {
  font-size: 56px;
  line-height: 1.12;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-strong);
  font-family: var(--font-family-display);
  letter-spacing: 1px;
}

.hero-content p {
  font-size: 18px;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-meta {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  flex-wrap: wrap;
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hero-meta-item span:first-child {
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.hero-meta-value {
  font-size: 32px;
  font-weight: 600;
  font-family: var(--font-family-display);
  color: var(--color-primary);
}

.hero-dashboard {
  position: relative;
  background: rgba(8, 24, 40, 0.88);
  border-radius: 32px;
  border: 1px solid rgba(72, 242, 194, 0.18);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.hero-dashboard::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: conic-gradient(from 0deg, rgba(72, 242, 194, 0.1), rgba(90, 145, 255, 0.24), rgba(72, 242, 194, 0.08));
  filter: blur(80px);
  opacity: 0.6;
}

.hero-dashboard canvas {
  width: 100%;
  height: 240px;
  border-radius: var(--radius-md);
  background: rgba(2, 12, 28, 0.88);
  border: 1px solid rgba(72, 242, 194, 0.12);
}

.dashboard-metrics {
  margin-top: var(--spacing-lg);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.metric-label {
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.metric-value {
  font-size: 26px;
  color: var(--color-text-strong);
  font-family: var(--font-family-display);
}

.metric-trend {
  font-size: 13px;
  color: var(--color-primary);
}

.metric-trend.negative {
  color: var(--color-danger);
}

.hero-stats {
  margin-top: var(--spacing-2xl);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-lg);
}

.stat-card {
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(72, 242, 194, 0.16);
  display: flex;
  flex-direction: column;
  gap: 0;
  backdrop-filter: blur(16px);
}

.stat-card strong {
  font-family: var(--font-family-display);
  font-size: 32px;
  color: var(--color-primary);
}

.stat-card span {
  font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

/* ========== 数据矩阵与列表 ========== */
.energy-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 14px;
}

.energy-matrix span {
  padding: 16px 12px;
  text-align: center;
  border-radius: var(--radius-md);
  background: rgba(72, 242, 194, 0.08);
  border: 1px solid rgba(72, 242, 194, 0.18);
  color: var(--color-text-muted);
  font-size: 14px;
  letter-spacing: 0.8px;
}

.list {
  display: grid;
  gap: 0;
}

.list li {
  display: flex;
  gap: 0;
  align-items: flex-start;
  color: var(--color-text-muted);
}

.list li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(72, 242, 194, 0.18);
}

.pill-group {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.pill {
  padding: 10px 16px;
  border-radius: var(--radius-round);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(72, 242, 194, 0.1);
  color: var(--color-text-muted);
  font-size: 13px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.icon-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.icon-item {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(72, 242, 194, 0.12);
}

.icon-item h4 {
  font-size: 20px;
  color: var(--color-text-strong);
}

.icon-item p {
  color: var(--color-text-muted);
  font-size: 15px;
}

.timeline {
  position: relative;
  display: grid;
  gap: var(--spacing-lg);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(255, 255, 255, 0.08);
}

.timeline-item {
  padding-left: 48px;
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 6px rgba(72, 242, 194, 0.16);
}

.timeline-item h4 {
  font-size: 20px;
  margin-bottom: 8px;
  color: var(--color-text-strong);
}

.timeline-item p {
  font-size: 15px;
  color: var(--color-text-muted);
}

/* ========== 表格与表单 ========== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(72, 242, 194, 0.1);
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(8, 24, 40, 0.9);
}

.table th,
.table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(72, 242, 194, 0.08);
  text-align: left;
  font-size: 15px;
  color: var(--color-text-muted);
}

.table th {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  background: rgba(72, 242, 194, 0.08);
  color: var(--color-text-strong);
}

.table tr:last-child td {
  border-bottom: none;
}

.form-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

input,
textarea,
select {
  background: rgba(8, 24, 40, 0.9);
  border: 1px solid rgba(72, 242, 194, 0.18);
  border-radius: var(--radius-md);
  padding: 16px;
  color: var(--color-text-strong);
  font-size: 15px;
  transition: border var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 4px rgba(72, 242, 194, 0.18);
}

textarea {
  min-height: 160px;
  resize: vertical;
}

input.error {
  border-color: var(--color-danger);
}

.form-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* ========== 新闻与案例 ========== */
.news-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.news-card {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-soft);
}

.news-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 0;
}

.news-card-content {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-card .tag {
  align-self: flex-start;
  background: rgba(90, 145, 255, 0.12);
  color: var(--color-secondary);
}

.news-card time {
  font-size: 13px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.news-card h3 {
  font-size: 20px;
  color: var(--color-text-strong);
}

.case-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.case-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(72, 242, 194, 0.12);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: flex-start;
}

.case-card strong {
  font-size: 18px;
  color: var(--color-text-strong);
}

.case-card span {
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

/* ========== 智能监控与数据面板 ========== */
.monitor-panel {
  position: relative;
  background: rgba(5, 22, 34, 0.92);
  border: 1px solid rgba(90, 145, 255, 0.18);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.monitor-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(72, 242, 194, 0.12), rgba(90, 145, 255, 0.1));
  opacity: 0.25;
}

.monitor-panel > * {
  position: relative;
  z-index: 2;
}

.monitor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.monitor-header h3 {
  font-size: 22px;
  color: var(--color-text-strong);
}

.monitor-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.monitor-metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.monitor-metric span:first-child {
  font-size: 12px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.monitor-metric strong {
  font-size: 26px;
  color: var(--color-primary);
  font-family: var(--font-family-display);
}

.monitor-chart {
  height: 220px;
  border-radius: var(--radius-md);
  background: repeating-linear-gradient(180deg, rgba(72, 242, 194, 0.04), rgba(72, 242, 194, 0.04) 32px, rgba(255, 255, 255, 0.02) 32px, rgba(255, 255, 255, 0.02) 64px);
  border: 1px solid rgba(90, 145, 255, 0.18);
  position: relative;
  overflow: hidden;
}

.monitor-activity {
  margin-top: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.monitor-chip {
  padding: 10px 16px;
  border-radius: var(--radius-round);
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-muted);
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ========== CTA 区块 ========== */
.cta {
  text-align: center;
  background: linear-gradient(135deg, rgba(72, 242, 194, 0.14), rgba(90, 145, 255, 0.1));
  padding: var(--spacing-2xl) var(--spacing-xl);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(72, 242, 194, 0.18);
  box-shadow: var(--shadow-soft);
}

.cta h2 {
  font-size: 36px;
  margin-bottom: var(--spacing-md);
}

.cta p {
  color: var(--color-text-muted);
  max-width: 680px;
  margin: 0 auto var(--spacing-lg);
}

/* ========== 页面通用模块 ========== */
.page-hero {
  position: relative;
  padding: 160px 0 120px;
  background: linear-gradient(135deg, rgba(6, 26, 52, 0.92), rgba(8, 39, 65, 0.88));
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(5, 17, 32, 0.92), rgba(4, 20, 36, 0.95));
  opacity: 0.7;
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

.page-hero-grid {
  display: grid;
  gap: var(--spacing-2xl);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
}

.page-hero h1 {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
  font-family: var(--font-family-display);
  letter-spacing: 1px;
  color: var(--color-text-strong);
}

.page-hero p {
  font-size: 17px;
  color: var(--color-text-muted);
}

.page-hero-stats {
  margin-top: var(--spacing-xl);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-lg);
}

.page-hero-stat {
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(72, 242, 194, 0.12);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-hero-stat strong {
  font-size: 28px;
  font-family: var(--font-family-display);
  color: var(--color-primary);
}

.page-hero-stat span {
  font-size: 13px;
  color: var(--color-text-soft);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.page-hero-visual {
  position: relative;
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(72, 242, 194, 0.16);
  box-shadow: var(--shadow-soft);
}

.page-hero-visual img {
  border-radius: var(--radius-md);
  width: 100%;
  height: auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-soft);
  margin-bottom: var(--spacing-md);
}

.breadcrumb span {
  color: var(--color-primary);
}

.stat-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.stat-panel-item {
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(72, 242, 194, 0.14);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-panel-item strong {
  font-size: 30px;
  color: var(--color-primary);
  font-family: var(--font-family-display);
}

.spec-list {
  display: grid;
  gap: 14px;
  border-left: 2px solid rgba(72, 242, 194, 0.18);
  padding-left: 20px;
}

.spec-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  color: var(--color-text-muted);
}

.spec-item strong {
  flex: 0 0 160px;
  color: var(--color-text-strong);
}

.tabs {
  display: inline-flex;
  gap: var(--spacing-sm);
  padding: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-round);
  border: 1px solid rgba(72, 242, 194, 0.12);
}

.tab {
  padding: 10px 18px;
  border-radius: var(--radius-round);
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--color-text-soft);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.tab.active {
  background: linear-gradient(120deg, rgba(72, 242, 194, 0.18), rgba(90, 145, 255, 0.18));
  color: var(--color-text-strong);
  box-shadow: inset 0 0 0 1px rgba(72, 242, 194, 0.2);
}

/* ========== 底部信息 ========== */
footer {
  background: rgba(3, 12, 24, 0.96);
  border-top: 1px solid rgba(72, 242, 194, 0.12);
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
}

.footer-content {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-xl);
}

.footer-brand p {
  color: var(--color-text-soft);
  font-size: 14px;
  margin-top: var(--spacing-sm);
}

.footer-section h3 {
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-text-strong);
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  display: grid;
  gap: 10px;
}

.footer-section a,
.footer-section li {
  color: var(--color-text-muted);
  font-size: 14px;
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  max-width: var(--container-wide);
  margin: var(--spacing-2xl) auto 0 auto;
  padding: var(--spacing-md) 24px 0;
  border-top: 1px solid rgba(72, 242, 194, 0.08);
  text-align: center;
  color: var(--color-text-soft);
  font-size: 13px;
  letter-spacing: 1px;
}

/* ========== 响应式适配 ========== */
@media (max-width: 1280px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
  }
}

@media (max-width: 1080px) {
  .hero-grid,
  .page-hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-dashboard {
    order: -1;
  }

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

@media (max-width: 1024px) {
  main {
    margin-top: 82px;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    bottom: 0;
    width: 320px;
    padding: 120px 40px;
    flex-direction: column;
    gap: 18px;
    background: rgba(4, 16, 32, 0.95);
    border-left: 1px solid rgba(72, 242, 194, 0.12);
    transition: right var(--transition-slow);
  }

  .nav-menu.active {
    right: 0;
  }

  .dropdown-menu {
    position: static;
    transform: none;
    width: 100%;
    background: rgba(255, 255, 255, 0.04);
    border: none;
    padding: 8px 0 6px;
    box-shadow: none;
    display: none;
  }

  .dropdown.active .dropdown-menu {
    display: flex;
  }

  .nav-actions {
    display: flex;
  }

  body.nav-open {
    overflow: hidden;
  }
}

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-4,
  .grid-6 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 768px) {
  section,
  .section {
    padding: var(--spacing-xl) 0;
  }

  .hero {
    padding: 140px 0 100px;
  }

  .hero-content h1 {
    font-size: 44px;
  }

  .hero-meta {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .hero-stats {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }

  .page-hero {
    padding: 140px 0 100px;
  }

  .page-hero h1 {
    font-size: 40px;
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .news-card img {
    height: 180px;
  }
}

@media (max-width: 576px) {
  .container {
    padding: 0 18px;
  }

  .badge {
    font-size: 11px;
    letter-spacing: 1.6px;
  }

  .hero-content h1 {
    font-size: 36px;
  }

  .hero-content p {
    font-size: 16px;
  }

  .stat-card strong,
  .page-hero-stat strong {
    font-size: 26px;
  }

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

  .case-grid,
  .news-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}