/* ===== 变量与基础 ===== */
:root {
  --bg-dark: #0c0e14;
  --bg-card: #141822;
  --bg-elevated: #1a1d28;
  --bg-glass: rgba(20, 24, 34, 0.7);
  --text-primary: #e6e9f0;
  --text-secondary: #8b92a8;
  --text-muted: #6b7288;
  --accent: #00d4aa;
  --accent-dim: #00a884;
  --accent-glow: rgba(0, 212, 170, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --font-sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --header-height: 72px;
  /* 固定顶栏 + 刘海屏安全区，用于首屏与 sticky 子导航偏移 */
  --header-offset: calc(var(--header-height) + env(safe-area-inset-top, 0px));
  --container: min(1400px, 96vw);
  --radius: 12px;
  --radius-lg: 20px;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  overflow-x: clip;
}
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-dark);
  -webkit-font-smoothing: antialiased;
}
body.nav-menu-open {
  overflow: hidden;
  touch-action: none;
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-dim);
}
.container {
  width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(16px, 4vw, 24px);
  padding-right: clamp(16px, 4vw, 24px);
}
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  min-height: var(--header-height);
  padding-top: env(safe-area-inset-top, 0px);
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background 0.2s, border-color 0.2s;
  overflow: visible;
}
.site-header.scrolled {
  background: rgba(12, 14, 20, 0.95);
}
/* 移动端展开菜单时关闭毛玻璃，否则在 WebKit 中带 backdrop-filter 的祖先会使内部 position:fixed 相对该祖先裁剪，导航无法全屏显示 */
@media (max-width: 768px) {
  .site-header.nav-panel-open,
  .site-header:has(.nav-open) {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(12, 14, 20, 0.98);
  }
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
}
.nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex: 1;
  min-width: 0;
}
.logo {
  position: relative;
  z-index: 210;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}
.logo:hover {
  color: var(--accent);
}
.nav-list {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list > li {
  position: relative;
}
.nav-list a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav-list a:hover,
.nav-list a.active {
  color: var(--text-primary);
}
/* 二级导航（悬停展开） */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  min-width: 180px;
  margin: 0;
  padding: 0.5rem 0;
  list-style: none;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  z-index: 200;
}
.nav-item-has-dropdown:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(4px);
}

/* 添加小箭头（可选） */
.nav-item-has-dropdown > a::after {
  content: "▾";
  display: inline-block;
  margin-left: 0.3rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: transform 0.2s;
}

.nav-item-has-dropdown:hover > a::after {
  transform: rotate(180deg);
  color: var(--accent);
}

.nav-dropdown a {
  display: block;
  padding: 0.6rem 1.25rem;
  font-size: 0.9rem;
  white-space: nowrap;
}
.nav-dropdown a:hover {
  background: rgba(0, 212, 170, 0.08);
  color: var(--accent);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  position: relative;
  z-index: 210;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  margin-left: 1rem;
  flex-shrink: 0;
}
.lang-switch__btn {
  padding: 0.35rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: inherit;
  line-height: 1.2;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.lang-switch__btn:hover {
  color: var(--text-primary);
  border-color: rgba(0, 212, 170, 0.35);
}
.lang-switch__btn.is-active {
  color: var(--accent);
  border-color: rgba(0, 212, 170, 0.45);
  background: rgba(0, 212, 170, 0.12);
}
@media (max-width: 768px) {
  .nav {
    gap: 0.7rem;
  }
  .lang-switch {
    margin-left: 0.35rem;
    margin-right: 0;
  }
  .lang-switch__btn {
    padding: 0.3rem 0.55rem;
    font-size: 0.75rem;
  }
  .nav-toggle {
    margin-left: 0.35rem;
  }
}

/* ===== 通用区块 ===== */
.section {
  padding: clamp(48px, 8vw, 80px) 0;
}
.section-title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
}
.section-desc {
  margin: 0 0 2.5rem;
  font-size: 1rem;
  color: var(--text-secondary);
  text-align: center;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== 按钮与链接 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg-dark);
}
.btn-primary:hover {
  background: var(--accent-dim);
  color: var(--bg-dark);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover {
  background: var(--accent-glow);
  color: var(--text-primary);
}
.link-arrow::after {
  content: " →";
  color: var(--accent);
}

/* ===== Banner ===== */
.banner {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--header-offset);
  overflow: hidden;
}
.banner-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.banner-bg::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: clamp(96px, 12vh, 160px);
  background: linear-gradient(
    180deg,
    rgba(20, 24, 34, 0) 0%,
    rgba(20, 24, 34, 0.88) 60%,
    rgba(20, 24, 34, 1) 100%
  );
  pointer-events: none;
}
.banner-bg-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 20%, var(--accent-glow) 0%, transparent 50%),
    linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 100%);
}
/* 动态网格：模拟机房/网络拓扑 */
.banner-bg-grid {
  position: absolute;
  inset: -50%;
  background-image:
    linear-gradient(rgba(0, 212, 170, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 170, 0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  animation: banner-grid-drift 25s linear infinite;
}
@keyframes banner-grid-drift {
  0% { transform: translate(0, 0); }
  100% { transform: translate(64px, 64px); }
}
/* 浮动节点光点：数据/算力节点 */
.banner-bg-nodes {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.banner-node {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow), 0 0 40px rgba(0, 212, 170, 0.15);
  opacity: 0.5;
  animation: banner-node-float 12s ease-in-out infinite;
}
.banner-node:nth-child(1) { left: 12%; top: 22%; animation-delay: 0s; }
.banner-node:nth-child(2) { left: 78%; top: 18%; animation-delay: -2s; }
.banner-node:nth-child(3) { left: 25%; top: 65%; animation-delay: -4s; }
.banner-node:nth-child(4) { left: 85%; top: 70%; animation-delay: -1s; }
.banner-node:nth-child(5) { left: 50%; top: 35%; animation-delay: -6s; width: 8px; height: 8px; opacity: 0.35; }
.banner-node:nth-child(6) { left: 8%; top: 55%; animation-delay: -3s; }
.banner-node:nth-child(7) { left: 92%; top: 45%; animation-delay: -5s; }
@keyframes banner-node-float {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.5; }
  25% { transform: translate(8px, -12px) scale(1.1); opacity: 0.7; }
  50% { transform: translate(-6px, 6px) scale(0.95); opacity: 0.4; }
  75% { transform: translate(10px, 8px) scale(1.05); opacity: 0.6; }
}
/* 数据流线条：缓慢流动的斜线 */
.banner-bg-flow {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    105deg,
    transparent,
    transparent 80px,
    rgba(0, 212, 170, 0.03) 80px,
    rgba(0, 212, 170, 0.03) 81px
  );
  background-size: 200% 100%;
  animation: banner-flow 20s linear infinite;
  pointer-events: none;
}
@keyframes banner-flow {
  0% { background-position: 0 0; }
  100% { background-position: 200% 0; }
}
.banner-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem 0 4rem;
}
.banner-title {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}
.banner-desc {
  margin: 0 0 2rem;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  width: 100%;
}
.banner-actions .btn {
  box-sizing: border-box;
}
.banner-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 36px;
  border: 2px solid var(--text-secondary);
  border-radius: 12px;
  opacity: 0.6;
}
.banner-scroll-hint::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scroll-hint 2s ease-in-out infinite;
}
@keyframes scroll-hint {
  0%, 100% { opacity: 0.3; transform: translateX(-50%) translateY(0); }
  50% { opacity: 1; transform: translateX(-50%) translateY(6px); }
}

/* ===== 内页 Banner（云基地子页等） ===== */
.banner--page {
  min-height: clamp(260px, 42vh, 440px);
  align-items: flex-end;
}
.banner--page .banner-inner {
  padding-top: calc(var(--header-offset) + 1.5rem);
  padding-bottom: 1.5rem;
  text-align: left;
}
.banner--page .banner-title {
  max-width: 720px;
  margin-left: 0;
  margin-right: auto;
}
.banner--page .banner-desc {
  margin-left: 0;
  margin-right: auto;
  max-width: 640px;
}
.banner--page .banner-scroll-hint {
  display: none;
}

.cloud-subnav-wrap,
.solutions-subnav-wrap {
  position: sticky;
  top: var(--header-offset);
  z-index: 50;
  background: rgba(12, 14, 20, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.cloud-subnav,
.solutions-subnav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0.65rem 0;
  justify-content: flex-start;
}
.cloud-subnav a,
.solutions-subnav a {
  display: inline-block;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid transparent;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}
.cloud-subnav a:hover,
.solutions-subnav a:hover {
  color: var(--text-primary);
  background: rgba(0, 212, 170, 0.06);
}
.cloud-subnav a.is-active,
.solutions-subnav a.is-active {
  color: var(--accent);
  border-color: rgba(0, 212, 170, 0.35);
  background: rgba(0, 212, 170, 0.08);
}

.nav-dropdown a.active {
  color: var(--accent);
  background: rgba(0, 212, 170, 0.06);
}

.cloud-page-section--alt {
  background: var(--bg-card);
}
.cloud-page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
  list-style: none;
  padding: 0;
}
.cloud-page-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.cloud-page-card:hover {
  border-color: rgba(0, 212, 170, 0.35);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
}
.cloud-page-card h3 {
  margin: 0 0 0.65rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.cloud-page-card h3 i {
  color: var(--accent);
  font-size: 1.25rem;
}
.cloud-page-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}
.cloud-page-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}
.cloud-page-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.cloud-page-nav__link:hover {
  color: var(--accent);
}
.cloud-page-nav__link i {
  font-size: 1.1rem;
}

/* ----- 云基地子页：增强版式 ----- */
.cloud-kpi-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 0 0 2.5rem;
  padding: 0;
  list-style: none;
}
.cloud-kpi-strip__item {
  position: relative;
  padding: 1.1rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(145deg, rgba(0, 212, 170, 0.07), rgba(12, 14, 20, 0.5));
  overflow: hidden;
}
.cloud-kpi-strip__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent), rgba(0, 212, 170, 0.2));
  border-radius: 3px 0 0 3px;
}
.cloud-kpi-strip__value {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.cloud-kpi-strip__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
}
.cloud-kpi-strip__hint {
  margin: 0.4rem 0 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.45;
}
.cloud-layout-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
  gap: 2rem 2.5rem;
  align-items: start;
  margin-top: 1.5rem;
}
.cloud-highlight-panel {
  padding: 1.5rem 1.75rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 212, 170, 0.22);
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(0, 212, 170, 0.12), transparent 55%),
    var(--bg-elevated);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
}
.cloud-highlight-panel__title {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}
.cloud-highlight-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.cloud-highlight-list li {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
}
.cloud-highlight-list i {
  flex-shrink: 0;
  margin-top: 0.15rem;
  font-size: 1.2rem;
  color: var(--accent);
}
.cloud-lifecycle-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.cloud-lifecycle-card__num {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(0, 212, 170, 0.12);
  border: 1px solid rgba(0, 212, 170, 0.25);
}
.cloud-lifecycle-card h3 {
  padding-right: 2.5rem;
}
.cloud-lifecycle-card__more {
  margin-top: auto;
  padding-top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  transition: gap 0.2s, color 0.2s;
}
.cloud-lifecycle-card__more:hover {
  gap: 0.55rem;
  color: #5ee9c9;
}
.cloud-lifecycle-card__more i {
  font-size: 1rem;
}
.cloud-lifecycle-card__current {
  margin-top: auto;
  padding-top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* 设计页：分层示意 */
.cloud-layer-stack {
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}
.cloud-layer-stack__layer {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem 1.25rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.cloud-layer-stack__layer:last-child {
  border-bottom: none;
}
.cloud-layer-stack__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0 0.5rem;
  border-radius: 10px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--bg-dark);
  background: linear-gradient(135deg, var(--accent), #00a884);
}
.cloud-layer-stack__body h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}
.cloud-layer-stack__body p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 建设页：流程时间轴 */
.cloud-build-steps {
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}
.cloud-build-steps::before {
  content: "";
  position: absolute;
  top: 1.35rem;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), rgba(0, 212, 170, 0.15));
  border-radius: 2px;
  z-index: 0;
}
.cloud-build-step {
  position: relative;
  z-index: 1;
  padding: 0 0.5rem;
  text-align: center;
}
.cloud-build-step__dot {
  width: 2.75rem;
  height: 2.75rem;
  margin: 0 auto 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 2px solid var(--accent);
  color: var(--accent);
  font-size: 1.2rem;
  box-shadow: 0 0 0 6px var(--bg-card);
}
.cloud-build-step__title {
  margin: 0 0 0.35rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}
.cloud-build-step__desc {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.45;
  max-width: 14rem;
  margin-left: auto;
  margin-right: auto;
}

/* 运营页：SLA 与链接 */
.cloud-sla-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
  list-style: none;
  padding: 0;
}
.cloud-sla-card {
  padding: 1.25rem 1.35rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.cloud-sla-card:hover {
  border-color: rgba(0, 212, 170, 0.3);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.22);
}
.cloud-sla-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 0.75rem;
  border-radius: 10px;
  background: rgba(0, 212, 170, 0.1);
  color: var(--accent);
  font-size: 1.25rem;
}
.cloud-sla-card h3 {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}
.cloud-sla-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
}
.cloud-service-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.85rem;
  margin-top: 1.25rem;
}
.cloud-service-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}
.cloud-service-links a:hover {
  border-color: rgba(0, 212, 170, 0.35);
  background: rgba(0, 212, 170, 0.06);
  color: var(--accent);
}
.cloud-service-links a i {
  font-size: 1.1rem;
  opacity: 0.7;
}

/* 设计页：交付清单 */
.cloud-deliver-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
  margin: 1.25rem 0 0;
}
.cloud-deliver-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  background: rgba(0, 212, 170, 0.06);
  border: 1px solid rgba(0, 212, 170, 0.15);
}
.cloud-deliver-chip i {
  color: var(--accent);
  flex-shrink: 0;
}

/* 建设页：质量要点 */
.cloud-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.25rem 0 0;
}
.cloud-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
}
.cloud-pill i {
  color: var(--accent);
  font-size: 1rem;
}

@media (max-width: 900px) {
  .cloud-layout-split {
    grid-template-columns: 1fr;
  }
  .cloud-kpi-strip {
    grid-template-columns: 1fr;
  }
  .cloud-build-steps {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .cloud-build-steps::before {
    display: none;
  }
  .cloud-build-step__dot {
    margin-bottom: 0.65rem;
  }
}

/* ===== 云基地简介：项目轮播（左选项右图片） ===== */
#base-projects .section-title + .base-projects-carousel {
  margin-top: 1.5rem;
}
.base-projects-carousel {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 1.25rem;
  align-items: stretch;
}
.base-projects-list {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.base-project-item {
  width: 100%;
  text-align: left;
  padding: 0.75rem 0.85rem;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.base-project-item:hover {
  color: var(--text-primary);
  background: rgba(0, 212, 170, 0.06);
}
.base-project-item.is-active {
  color: var(--accent);
  border-color: rgba(0, 212, 170, 0.35);
  background: rgba(0, 212, 170, 0.1);
}
.base-projects-stage {
  position: relative;
  min-height: clamp(280px, 48vh, 520px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}
.base-project-pane {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease;
}
.base-project-pane.is-active {
  opacity: 1;
  visibility: visible;
}
.base-project-pane img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.base-project-caption {
  position: absolute;
  right: clamp(12px, 2vw, 18px);
  bottom: clamp(12px, 2vw, 18px);
  width: min(440px, calc(100% - 24px));
  background: rgba(12, 14, 20, 0.78);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 12px;
  padding: 0.9rem 1rem 0.85rem;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.32);
}
.base-project-caption h3 {
  margin: 0 0 0.55rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}
.base-project-caption ul {
  margin: 0;
  padding-left: 1rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.55;
}
.base-project-caption li {
  margin-bottom: 0.28rem;
}
.base-project-caption li:last-child {
  margin-bottom: 0;
}
@media (max-width: 900px) {
  .base-projects-carousel {
    grid-template-columns: 1fr;
  }
  .base-projects-list {
    flex-direction: row;
    overflow-x: auto;
    padding: 0.55rem;
  }
  .base-project-item {
    white-space: nowrap;
    width: auto;
    flex: 0 0 auto;
  }
  .base-project-caption {
    width: calc(100% - 20px);
    right: 10px;
    bottom: 10px;
    padding: 0.8rem 0.9rem;
  }
  .base-project-caption ul {
    font-size: 0.8rem;
    line-height: 1.45;
  }
}

/* ===== 解决方案页 ===== */
.solutions-scroll-anchor {
  scroll-margin-top: calc(var(--header-offset) + 12px);
}
.solutions-module-head {
  margin-bottom: 0.25rem;
}
.solutions-module-head .section-title {
  margin-top: 0;
}
.solutions-module-num {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-align: center;
  color: var(--accent);
  opacity: 0.95;
}
.solutions-media {
  background: var(--bg-elevated);
  border: 1px dashed rgba(0, 212, 170, 0.35);
  border-radius: var(--radius-lg);
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-secondary);
  padding: 1.5rem;
}
.solutions-media--wide {
  min-height: 280px;
}
.solutions-media__label {
  margin: 0.65rem 0 0;
  font-size: 0.9rem;
}
.solutions-media--photo {
  border-style: solid;
  border-color: var(--border);
  padding: 0;
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.solutions-media--photo img {
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  display: block;
}
.solutions-media--wide.solutions-media--photo img {
  min-height: 280px;
}
.solutions-media--framed {
  position: relative;
  box-shadow:
    0 0 0 1px rgba(0, 212, 170, 0.12),
    0 20px 50px rgba(0, 0, 0, 0.35);
}
.solutions-media--framed::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  background: linear-gradient(145deg, rgba(0, 212, 170, 0.06) 0%, transparent 42%, transparent 100%);
}
.solutions-media--framed:hover {
  border-color: rgba(0, 212, 170, 0.28);
  box-shadow:
    0 0 0 1px rgba(0, 212, 170, 0.2),
    0 24px 56px rgba(0, 0, 0, 0.4);
}
.solutions-media--hero {
  margin-top: 1.5rem;
}
.solutions-media--after-title {
  margin-top: 1rem;
}
.solutions-split__body {
  min-width: 0;
}

/* 云服务子页主图（Unsplash 等授权素材） */
.cloud-page-hero {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}
.cloud-page-hero img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  display: block;
}
@media (min-width: 768px) {
  .cloud-page-hero img {
    height: 320px;
  }
}
.solutions-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 2rem;
  align-items: start;
  margin-top: 1.5rem;
}
@media (max-width: 900px) {
  .solutions-split {
    grid-template-columns: 1fr;
  }
}
.solutions-block-title {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
}
.solutions-block-title--spaced {
  margin-top: 2rem;
}
.solutions-block-title--spaced-lg {
  margin-top: 2.25rem;
}
.solutions-block-title--center {
  text-align: center;
}
.solutions-block-title--tight {
  margin-bottom: 0.4rem;
}
.solutions-block-title--spec {
  margin-top: 2.5rem;
}
.section-desc--spec {
  margin-bottom: 1rem;
}
.solutions-lead {
  margin: 0;
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
}
.solutions-card {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  margin-top: 1.5rem;
  overflow: hidden;
}
.solutions-card--accent {
  background:
    radial-gradient(100% 120% at 0% 0%, rgba(0, 212, 170, 0.1), transparent 55%),
    var(--bg-elevated);
  border-color: rgba(0, 212, 170, 0.22);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.22);
}
.solutions-card--accent::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--accent), rgba(0, 212, 170, 0.25));
  border-radius: 4px 0 0 4px;
}
.solutions-challenge-list {
  counter-reset: sol-challenge;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1rem;
}
.solutions-challenge-item {
  position: relative;
  padding: 1.2rem 1.25rem 1.2rem 3.35rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(125deg, rgba(0, 212, 170, 0.05), rgba(26, 29, 40, 0.92));
  transition: border-color 0.2s, box-shadow 0.2s;
}
.solutions-challenge-item:hover {
  border-color: rgba(0, 212, 170, 0.28);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.2);
}
.solutions-challenge-item::before {
  counter-increment: sol-challenge;
  content: counter(sol-challenge, decimal-leading-zero);
  position: absolute;
  left: 1rem;
  top: 1.15rem;
  width: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
  line-height: 1.2;
}
.solutions-challenge-item h4 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}
.solutions-challenge-item p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}
.solutions-pillar-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}
@media (max-width: 768px) {
  .solutions-pillar-grid {
    grid-template-columns: 1fr;
  }
}
.solutions-pillar {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.4rem 1.3rem;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.solutions-pillar::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), rgba(0, 212, 170, 0.15));
  opacity: 0.85;
}
.solutions-pillar:hover {
  border-color: rgba(0, 212, 170, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}
.solutions-pillar h4 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.solutions-pillar h4 i {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 10px;
  background: rgba(0, 212, 170, 0.1);
  color: var(--accent);
  font-size: 1.1rem;
}
.solutions-pillar ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.75;
}
.solutions-pillar li {
  margin-bottom: 0.4rem;
}
.solutions-value-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.75rem;
}
@media (max-width: 900px) {
  .solutions-value-grid {
    grid-template-columns: 1fr;
  }
}
.solutions-value-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 1.35rem 1.45rem 1.45rem;
  background: var(--bg-elevated);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.solutions-value-card:hover {
  border-color: rgba(0, 212, 170, 0.22);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.22);
}
.solutions-value-card--scheme {
  background:
    linear-gradient(160deg, rgba(0, 212, 170, 0.07) 0%, transparent 45%),
    var(--bg-elevated);
}
.solutions-value-card--value {
  background:
    linear-gradient(200deg, rgba(0, 168, 132, 0.08) 0%, transparent 50%),
    var(--bg-elevated);
}
.solutions-value-card__head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border);
}
.solutions-value-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 12px;
  background: rgba(0, 212, 170, 0.12);
  color: var(--accent);
  font-size: 1.25rem;
}
.solutions-value-card__title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}
.solutions-subsection {
  margin-top: 2rem;
}
.solutions-subsection:first-of-type {
  margin-top: 0;
}
.solutions-subsection h3 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}
.solutions-list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
}
.solutions-value-card .solutions-list {
  margin: 0;
}
.solutions-list li {
  margin-bottom: 0.5rem;
}
.spec-wrap {
  margin-top: 1.5rem;
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.spec-wrap--glow {
  border-color: rgba(0, 212, 170, 0.18);
  box-shadow:
    0 0 0 1px rgba(0, 212, 170, 0.06),
    0 12px 40px rgba(0, 0, 0, 0.2);
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}
.spec-table th,
.spec-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.spec-table th {
  width: 38%;
  max-width: 320px;
  color: var(--text-primary);
  font-weight: 500;
  background: rgba(0, 212, 170, 0.06);
}
.spec-table tr:last-child td,
.spec-table tr:last-child th {
  border-bottom: none;
}
.spec-table caption {
  caption-side: top;
  padding: 1rem 1rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
}
.solutions-download {
  margin-top: 2.5rem;
  padding: 1.35rem 1.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem 1.5rem;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04);
}
.solutions-download--featured {
  background:
    radial-gradient(80% 100% at 100% 0%, rgba(0, 212, 170, 0.1), transparent 55%),
    var(--bg-elevated);
  border-color: rgba(0, 212, 170, 0.22);
  box-shadow:
    0 0 0 1px rgba(0, 212, 170, 0.08),
    0 20px 48px rgba(0, 0, 0, 0.28);
}
.solutions-download-lead {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  min-width: 0;
}
.solutions-download-icon {
  flex-shrink: 0;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: rgba(0, 212, 170, 0.12);
  color: var(--accent);
  font-size: 1.65rem;
}
.solutions-download-title {
  margin: 0 0 0.2rem;
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
}
.solutions-download-meta {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
}
.solutions-download .btn {
  flex-shrink: 0;
}
.solutions-download-btn i {
  margin-right: 0.4rem;
  vertical-align: -0.12em;
  font-size: 1.05em;
}
@media (max-width: 560px) {
  .solutions-download {
    grid-template-columns: 1fr;
    padding: 1.25rem 1.25rem;
  }
  .solutions-download .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ===== 公司简介（左文右图） ===== */
.about-split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(260px, 440px);
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: center;
}
.about-split__text h3 {
  margin: 0 0 0.85rem;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
}
.about-split__text p {
  margin: 0;
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.75;
}
.about-split__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
}
.about-split__media img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 220px;
  object-fit: cover;
}
.about-split--after-title {
  margin-top: 2rem;
}
.about-split--intro {
  grid-template-columns: minmax(0, 1.12fr) minmax(280px, min(46%, 520px));
  align-items: start;
}
.about-split--intro .about-split__media img {
  min-height: 360px;
  max-height: 560px;
  object-fit: cover;
}
.about-intro-text .about-intro-item {
  margin: 0 0 1.35rem;
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}
.about-intro-text .about-intro-item:last-child {
  margin-bottom: 0;
}
.about-intro-text .about-intro-item strong {
  color: var(--text-primary);
  font-weight: 600;
}
@media (max-width: 900px) {
  .about-split {
    grid-template-columns: 1fr;
  }
  .about-split--intro .about-split__media img {
    min-height: 240px;
    max-height: none;
  }
  .about-split__media {
    order: -1;
  }
}

/* ===== 业务数据展示 ===== */
.stats-section {
  background: var(--bg-card);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}
.stats-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.stats-item:hover,
.stats-item:focus-within {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  border-color: rgba(0, 212, 170, 0.5);
}
.stats-icon {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  background: rgba(0, 212, 170, 0.06);
  flex-shrink: 0;
}
.stats-icon-inner {
  font-size: 1rem;
}
.stats-item:hover .stats-icon-inner,
.stats-item:focus-within .stats-icon-inner {
  animation: stats-icon-spin 0.8s linear infinite;
}
@keyframes stats-icon-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.stats-content {
  flex: 1;
}
.stats-value {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}
.stats-number {
  min-width: 2.5ch;
}
.stats-unit {
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.stats-text {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ===== 业务展示 - 全新布局 ===== */
.business-section {
  position: relative;
  background: var(--bg-card);
  overflow: hidden; /* 确保背景连线不溢出 */
  padding: clamp(32px, 5vw, 48px) 0;
}
.business-section .section-title {
  margin-bottom: 0.35rem;
}
.business-section .section-desc {
  margin-bottom: 1.5rem;
}

/* 背景拓扑网格（增加科技感） */
.business-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 30% 40%, rgba(0,212,170,0.08) 0px, transparent 2px),
    radial-gradient(circle at 70% 60%, rgba(0,212,170,0.08) 0px, transparent 2px),
    radial-gradient(circle at 45% 80%, rgba(0,212,170,0.08) 0px, transparent 2px),
    linear-gradient(rgba(0,212,170,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,170,0.03) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px, 80px 80px, 40px 40px, 40px 40px;
  background-position: 0 0, 20px 30px, 50px 70px, 0 0, 0 0;
  pointer-events: none;
  z-index: 0;
}

/* 连接线（模拟数据中心互联） */
.business-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background: 
    /* 横向连接线 */
    linear-gradient(90deg, transparent 20%, var(--accent) 20%, var(--accent) 21%, transparent 21%),
    linear-gradient(90deg, transparent 60%, var(--accent) 60%, var(--accent) 61%, transparent 61%),
    /* 纵向连接线 */
    linear-gradient(180deg, transparent 30%, var(--accent) 30%, var(--accent) 31%, transparent 31%),
    linear-gradient(180deg, transparent 70%, var(--accent) 70%, var(--accent) 71%, transparent 71%);
  background-size: 100% 2px, 100% 2px, 2px 100%, 2px 100%;
  background-repeat: no-repeat;
  background-position: 
    0 20%,
    0 60%,
    30% 0,
    70% 0;
  opacity: 0.15;
  pointer-events: none;
  z-index: 1;
  transition: opacity 0.3s;
}

.business-section:hover::after {
  opacity: 0.3; /* 鼠标进入区域时连线高亮 */
}

.business-grid {
  display: grid;
  grid-template-areas: 
    "idc    idc   ops"
    "maintain cloud cloud"
    "gpu    gpu   gpu";
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  z-index: 2;
}

.business-card--idc {
  grid-area: idc;
}

.business-card--ops {
  grid-area: ops;
}

.business-card--maintain {
  grid-area: maintain;
}

.business-card--cloud {
  grid-area: cloud;
}

.business-card--gpu {
  grid-area: gpu;
}

.business-card {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  overflow: hidden;
  z-index: 2;
  backdrop-filter: blur(2px);
}

/* 卡片背景网格（暗纹） */
.business-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(0, 212, 170, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 170, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: -1;
}

.business-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 28px rgba(0, 212, 170, 0.12), 0 0 0 1px rgba(0, 212, 170, 0.25);
}

/* GPU 卡片特殊处理（占据整行，增加扫描光效） */
.business-card--gpu {
  background: linear-gradient(145deg, var(--bg-elevated), rgba(0, 212, 170, 0.1));
  border-color: rgba(0, 212, 170, 0.4);
}

.business-card--gpu::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: gpu-scan 3s infinite;
}

@keyframes gpu-scan {
  0% { transform: translateX(-100%); }
  50%, 100% { transform: translateX(100%); }
}

/* 图标容器 */
.business-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 0.65rem;
  font-size: 1.35rem;
  color: var(--accent);
  background: rgba(0, 212, 170, 0.1);
  border-radius: 12px;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}

.business-card:hover .business-icon {
  background: var(--accent);
  color: var(--bg-dark);
  transform: scale(1.05) rotate(2deg);
  box-shadow: 0 0 20px var(--accent-glow);
}

.business-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.business-card p {
  margin: 0 0 0.65rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.business-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  transition: gap 0.2s;
}

.business-link i {
  font-size: 1rem;
  transition: transform 0.2s;
}

.business-card:hover .business-link {
  gap: 0.6rem;
}

.business-card:hover .business-link i {
  transform: translateX(4px);
}

/* 响应式调整 */
@media (max-width: 900px) {
  .business-grid {
    grid-template-areas: 
      "idc idc"
      "ops maintain"
      "cloud cloud"
      "gpu gpu";
    grid-template-columns: 1fr 1fr;
  }
  
  .business-card--ops {
    grid-area: ops;
  }
  
  .business-card--maintain {
    grid-area: maintain;
  }
  
  /* 背景连线在移动端隐藏，避免混乱 */
  .business-section::after {
    display: none;
  }
}

@media (max-width: 600px) {
  .business-grid {
    grid-template-areas: 
      "idc"
      "ops"
      "maintain"
      "cloud"
      "gpu";
    grid-template-columns: 1fr;
  }
}

/* ===== 已建成项目：背景轮播 ===== */
.projects-section {
  padding: 0;
  background: var(--bg-dark);
}
.projects-hero {
  position: relative;
  color: var(--text-primary);
}
.projects-main {
  position: relative;
  min-height: min(80vh, 820px);
  overflow: hidden;
}
.projects-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.45s ease;
}
.projects-slide.is-active {
  opacity: 1;
  visibility: visible;
}
.projects-main-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.75) 0%, rgba(0, 0, 0, 0.25) 40%, rgba(0, 0, 0, 0) 70%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.projects-main-content {
  width: 100%;
  max-width: var(--container);
  padding-left: clamp(16px, 4vw, 24px);
}
.projects-tag {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.projects-title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
}
.projects-bullets {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 1rem;
  color: rgba(230, 233, 240, 0.92);
  line-height: 1.75;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}
.projects-bullets li {
  margin-bottom: 0.35rem;
}
.projects-bullets li:last-child {
  margin-bottom: 0;
}
.projects-thumbs {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding: 0.75rem clamp(16px, 4vw, 24px);
  background: rgba(0, 0, 0, 0.45);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.projects-arrow {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.projects-arrow:hover {
  color: var(--accent);
  border-color: rgba(0, 212, 170, 0.5);
}
.projects-thumbs-track {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 0.25rem 0;
}
.projects-thumb {
  border: 2px solid transparent;
  border-radius: 10px;
  padding: 2px;
  background: transparent;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  min-width: 140px;
}
.projects-thumb img {
  display: block;
  width: 100%;
  height: 72px;
  object-fit: cover;
  border-radius: 8px;
}
.projects-thumb-label {
  margin-top: 4px;
  font-size: 0.8rem;
}
.projects-thumb.is-active {
  border-color: var(--accent);
  background: rgba(0, 212, 170, 0.12);
}
@media (max-width: 768px) {
  .projects-main {
    min-height: min(72vh, 520px);
    padding-bottom: 0;
  }
  .projects-main-overlay {
    align-items: flex-end;
    justify-content: flex-start;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 10%, rgba(0, 0, 0, 0.8) 100%);
    /* 为底部绝对定位的缩略图条预留空间，避免与标题/要点重叠 */
    padding-bottom: max(148px, calc(118px + env(safe-area-inset-bottom, 0px)));
    box-sizing: border-box;
  }
  .projects-main-content {
    width: 100%;
    max-width: none;
    margin: 0 clamp(12px, 4vw, 20px) 0;
    padding-bottom: 0;
  }
  .projects-thumbs {
    z-index: 2;
    padding-top: 0.5rem;
    padding-bottom: max(0.65rem, env(safe-area-inset-bottom, 0px));
  }
}
@media (max-width: 480px) {
  .projects-main {
    min-height: min(68vh, 480px);
  }
  .projects-main-overlay {
    padding-bottom: max(156px, calc(124px + env(safe-area-inset-bottom, 0px)));
  }
  .projects-title {
    font-size: clamp(1.35rem, 5vw, 1.75rem);
  }
  .projects-bullets {
    font-size: 0.92rem;
    line-height: 1.65;
  }
  .projects-thumb {
    min-width: 120px;
  }
  .projects-thumb img {
    height: 64px;
  }
}

/* ===== 设计特点 ===== */
.features-section {
  background: var(--bg-card);
}
.features-main-title {
  margin: 0 0 2.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
}
.features-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2.5rem;
}
.feature-block {
  text-align: center;
  padding: 1.5rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.feature-block:hover {
  border-color: rgba(0, 212, 170, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.feature-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.25rem;
  border-radius: 50%;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1000px;
}
.feature-icon-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  transition: transform 0.6s ease;
  transform-style: preserve-3d;
}
.feature-block:hover .feature-icon-inner {
  transform: rotateY(360deg);
}
.feature-icon-inner img {
  display: block;
  width: 56px;
  height: 56px;
  object-fit: contain;
  pointer-events: none;
}
.feature-block-title {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color 0.25s ease;
}
.feature-block:hover .feature-block-title {
  color: var(--accent);
}
.feature-block-desc {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.features-cta {
  text-align: center;
  margin: 0;
}
@media (max-width: 900px) {
  .features-blocks {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* ===== 云服务简介 ===== */
.cloud-intro-section {
  position: relative;
  min-height: 320px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-color: var(--bg-dark);
}
.cloud-intro-section .cloud-intro-overlay {
  position: absolute;
  inset: 0;
  background: rgba(12, 14, 20, 0.72);
  pointer-events: none;
}
.cloud-intro-inner {
  position: relative;
  z-index: 1;
  padding: clamp(48px, 8vw, 80px) 0;
}
.cloud-intro-content {
  max-width: 640px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}
.cloud-intro-content > .btn {
  align-self: center;
  margin-top: 0.35rem;
}
.cloud-intro-content .section-title,
.cloud-intro-content .section-desc {
  text-align: left;
  margin-left: 0;
  margin-right: 0;
}
.cloud-intro-text {
  margin: 0 0 1.5rem;
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}
.section .container > .section-title + .cloud-intro-text {
  margin-top: 1rem;
}
.cloud-intro-text strong {
  color: var(--accent);
}
.cloud-intro-bullets {
  margin: 0 0 1.5rem;
  padding-left: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}
.cloud-intro-bullets li {
  margin-bottom: 0.35rem;
}

/* ===== 媒体新闻 ===== */
.news-section {
  background: var(--bg-card);
}
.news-section .section-title {
  margin-bottom: 0.5rem;
}
.news-section .section-desc {
  margin-bottom: 1.25rem;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}
.news-card {
  display: flex;
  background: var(--bg-elevated);
  border-radius: 8px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  min-height: 160px;
}
.news-card-text {
  flex: 1;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}
.news-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
}
.news-card .news-title {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.4;
}
.news-card .news-title a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.25s ease;
}
.news-card:hover .news-title a {
  color: var(--accent);
}
.news-link {
  font-size: 0.9rem;
  color: var(--accent);
  text-decoration: underline;
}
.news-link:hover {
  color: var(--accent-dim);
}
.news-card-image {
  flex-shrink: 0;
  width: 48%;
  max-width: 280px;
  background: var(--bg-dark);
  overflow: hidden;
}
.news-card-image img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 160px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .news-card-image img {
  transform: scale(1.08);
}
@media (max-width: 768px) {
  .news-grid {
    grid-template-columns: 1fr;
  }
  .news-card {
    flex-direction: column;
    min-height: auto;
  }
  .news-card-image {
    width: 100%;
    max-width: none;
    height: 180px;
  }
  .news-card-image img {
    min-height: 180px;
  }
}

/* ===== 新闻列表 / 详情页 ===== */
.news-list-section .section-desc {
  display: block;
}
.news-page-excerpt {
  margin: 0.35rem 0 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-article-page {
  padding-bottom: clamp(48px, 8vw, 80px);
}
.news-article-head {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 clamp(0px, 2vw, 8px);
}
.news-article-kicker {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}
.news-article-title {
  margin: 0 0 1rem;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-primary);
}
.news-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0 0 1.75rem;
}
.news-article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.news-article-figure {
  margin: 0 auto 2rem;
  max-width: 900px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}
.news-article-figure img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 200px;
  object-fit: cover;
}
.news-article-prose {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 clamp(0px, 2vw, 8px);
}
.news-article-prose p {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.85;
}
.news-article-prose p:last-child {
  margin-bottom: 0;
}
.news-article-related {
  margin: 1.5rem 0;
  padding: 0.85rem 1rem;
  border-left: 3px solid rgba(0, 212, 170, 0.55);
  background: rgba(0, 212, 170, 0.06);
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.65;
}
.news-article-subhead {
  margin: 2rem 0 0.85rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}
.news-article-bio {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
}
.news-article-note {
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  border: 1px dashed rgba(255, 255, 255, 0.12);
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.news-article-nav {
  max-width: 760px;
  margin: 2.5rem auto 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.75rem 1.5rem;
}
.news-article-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.news-article-nav a:hover {
  color: var(--accent);
}

/* ===== 联系区域 ===== */
.contact-section {
  background: var(--bg-dark);
}
.contact-inner {
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
}
.contact-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}
.contact-block {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.contact-block:hover {
  border-color: rgba(0, 212, 170, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.contact-block-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  color: var(--accent);
  border-radius: 50%;
}
.contact-block-icon svg {
  flex-shrink: 0;
}
.contact-block-title {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}
.contact-block-desc {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.contact-block-desc a {
  color: var(--accent);
}
.contact-block-desc a:hover {
  color: var(--accent-dim);
}
@media (max-width: 768px) {
  .contact-blocks {
    grid-template-columns: 1fr;
  }
}

/* ===== 底部 ===== */
.site-footer {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 3.25rem;
  padding: 4.75rem 0;
  align-items: start;
}
.footer-heading {
  margin: 0 0 1.15rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-heading a {
  color: inherit;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.footer-heading a:hover {
  color: var(--accent);
}
.footer-nav {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-nav li {
  margin-bottom: 0.65rem;
}
.footer-nav a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}
.footer-nav a:hover {
  color: var(--accent);
}
.footer-brand .logo {
  display: inline-block;
  margin-bottom: 0.5rem;
}
.footer-tagline {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 1.75rem 0 max(1.75rem, env(safe-area-inset-bottom, 0px));
}
.copyright {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: center;
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .cloud-intro-content {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }
  .cloud-intro-content .section-title,
  .cloud-intro-content .section-desc {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }
  .cloud-intro-text,
  .cloud-intro-bullets {
    text-align: left;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 3.5rem 0;
  }
}
@media (max-width: 600px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 3rem 0;
  }
}
@media (max-width: 768px) {
  .nav-list {
    display: none;
    position: fixed;
    top: var(--header-offset);
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    flex-direction: column;
    gap: 0;
    padding: 0.75rem 0 max(1.25rem, env(safe-area-inset-bottom, 0px));
    background: var(--bg-dark);
    border-bottom: none;
    border-top: 1px solid rgba(0, 212, 170, 0.12);
    box-shadow: none;
    max-height: none;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    /* 高于顶栏内其他元素，且菜单打开时 header 已取消 backdrop-filter，fixed 相对视口全屏 */
    z-index: 500;
  }
  .nav.nav-open .nav-list {
    display: flex !important;
  }
  .nav-list > li {
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }
  .nav-list > li:last-child {
    border-bottom: none;
  }
  .nav-list > li > a {
    display: block;
    padding: 0.85rem 1rem;
  }
  /* 触屏无 hover：子菜单改为静态展开，避免无法点开下拉 */
  .nav-dropdown {
    position: static !important;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    min-width: 0;
    width: 100%;
    margin: 0 0 0.35rem 0;
    padding: 0.2rem 0 0.5rem 0.75rem;
    list-style: none;
    background: rgba(0, 0, 0, 0.2);
    border: none;
    border-left: 2px solid rgba(0, 212, 170, 0.35);
    border-radius: 0 var(--radius) var(--radius) 0;
    box-shadow: none;
  }
  .nav-dropdown li:last-child a {
    padding-bottom: 0.75rem;
  }
  .nav-item-has-dropdown > a::after {
    display: none;
  }
  .nav-dropdown a {
    white-space: normal;
    padding: 0.55rem 0.75rem 0.55rem 0.5rem;
    font-size: 0.92rem;
  }
  .nav-toggle {
    display: flex;
  }
  .contact-content {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
  .contact-cta {
    justify-content: center;
    display: flex;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer-brand {
    text-align: center;
  }
}
@media (max-width: 480px) {
  .nav {
    gap: 0.85rem;
  }
  .lang-switch {
    margin-left: 0.2rem;
    margin-right: 0;
    gap: 0.25rem;
  }
  .lang-switch__btn {
    padding: 0.28rem 0.5rem;
    font-size: 0.72rem;
  }
  .nav-toggle {
    margin-left: 0.45rem;
  }
  .banner-inner {
    padding-left: clamp(12px, 4vw, 20px);
    padding-right: clamp(12px, 4vw, 20px);
  }
  .banner-actions {
    flex-direction: column;
    align-items: center;
    gap: 0.85rem;
    max-width: 320px;
    margin-left: auto;
    margin-right: auto;
  }
  .banner-actions .btn {
    width: 100%;
    max-width: none;
  }
}