/* ==========================================================================
   超实惠机场 (cishanjichang.lol)
   UI 风格：瑞士工坊工业风 & 电子墨水屏仓储价签 (Swiss-Industrial Warehouse & E-Ink)
   零模糊阴影 · 零圆角卡片 · 1px 钢构硬朗骨架 · 电子价签 (ESL) 墨水屏刷新微交互
   ========================================================================== */

/* ---------------- 基础工业调色盘与变量配置 ---------------- */
:root {
  /* 基础零售仓储基调 (白天模式) */
  --bg-canvas: #ffffff;
  --bg-shelf: #f7f7f8;
  --bg-esl-card: #ffffff;
  --bg-inverted: #0a0a0c;
  --text-inverted: #ffffff;

  --ink-black: #0a0a0c;
  --chalk-white: #ffffff;
  --wholesale-yellow: #ffd60a;
  --yellow-hover: #ffea00;

  --text-primary: #0a0a0c;
  --text-secondary: #3f3f46;
  --text-mono-muted: #71717a;

  --steel-beam: #0a0a0c;         /* 1px 钢构硬线 */
  --steel-beam-subtle: #d4d4d8;  /* 细分割虚线 */
  --steel-beam-light: #e4e4e7;

  --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Roboto Mono", "Cascadia Code", Menlo, Consolas, monospace;

  --transition-eink: 0.08s step-end;
  --max-width: 1240px;
}

/* ---------------- 夜间碳素钢板模式 ---------------- */
[data-theme="dark"] {
  --bg-canvas: #09090b;
  --bg-shelf: #121215;
  --bg-esl-card: #18181b;
  --bg-inverted: #ffffff;
  --text-inverted: #0a0a0c;

  --ink-black: #ffffff;
  --chalk-white: #0a0a0c;

  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-mono-muted: #71717a;

  --steel-beam: #3f3f46;
  --steel-beam-subtle: #27272a;
  --steel-beam-light: #18181b;
}

/* ---------------- 全局重置 (无阴影、直角工业标准) ---------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important; /* 彻底去除所有模糊圆角，还原硬核工业与仓储标签标准 */
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
  position: relative;
  border-top: 4px solid var(--steel-beam);
}

/* 仓储货架顶部警示标识带 */
.warehouse-tape-bar {
  background: repeating-linear-gradient(
    -45deg,
    var(--wholesale-yellow),
    var(--wholesale-yellow) 14px,
    #0a0a0c 14px,
    #0a0a0c 28px
  );
  height: 6px;
  width: 100%;
  border-bottom: 1px solid var(--steel-beam);
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

img, svg {
  display: block;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 工业十字准星定位标记 */
.crosshair {
  position: relative;
}
.crosshair::before,
.crosshair::after {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-mono-muted);
  font-weight: 400;
  pointer-events: none;
}

/* ---------------- 页眉导航目录 (Header & Navigation) ---------------- */
.header-esl {
  background-color: var(--bg-canvas);
  border-bottom: 2px solid var(--steel-beam);
  position: sticky;
  top: 0;
  z-index: 999;
}

.top-telemetry-bar {
  background: var(--bg-shelf);
  border-bottom: 1px solid var(--steel-beam-subtle);
  padding: 4px 20px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-transform: uppercase;
  color: var(--text-mono-muted);
}

.telemetry-tag {
  color: var(--text-primary);
  font-weight: 700;
}

.telemetry-active-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--wholesale-yellow);
  border: 1px solid var(--steel-beam);
  margin-right: 4px;
}

.navbar-warehouse {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  min-height: 64px;
}

.brand-aisle {
  display: flex;
  align-items: center;
  padding: 0 20px 0 0;
  border-right: 1px solid var(--steel-beam);
  gap: 12px;
}

.brand-symbol {
  background: var(--steel-beam);
  color: var(--bg-canvas);
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 1px;
  border: 1px solid var(--steel-beam);
}

[data-theme="dark"] .brand-symbol {
  background: var(--wholesale-yellow);
  color: #0a0a0c;
}

.brand-title-wrap {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  text-transform: uppercase;
  color: var(--text-primary);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-mono-muted);
  letter-spacing: 0.5px;
}

/* 导航目录：首页 + 每个板块 + 推荐资讯 */
.nav-aisle-menu {
  display: flex;
  align-items: stretch;
  flex-grow: 1;
  overflow-x: auto;
}

.nav-link-item {
  display: flex;
  align-items: center;
  padding: 0 16px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  border-right: 1px solid var(--steel-beam-subtle);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
  transition: all 0.15s ease;
  position: relative;
}

.nav-link-item:hover {
  background-color: var(--wholesale-yellow);
  color: #0a0a0c;
  border-right-color: var(--steel-beam);
}

/* 特别突出：“推荐资讯” 导航入口 */
.nav-link-item.link-news {
  background-color: var(--bg-shelf);
  border-left: 2px solid var(--steel-beam);
  color: var(--text-primary);
}

.nav-link-item.link-news::after {
  content: "NEW";
  display: inline-block;
  margin-left: 6px;
  font-size: 0.62rem;
  background: #0a0a0c;
  color: var(--wholesale-yellow);
  padding: 1px 4px;
  font-weight: 800;
}

/* 右侧操作区：精密工坊昼夜切换 + CTA 部署按钮 */
.nav-actions-industrial {
  display: flex;
  align-items: center;
  padding-left: 16px;
  gap: 12px;
}

/* 瑞士工业风昼夜切换控件 */
.theme-switch-industrial {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-shelf);
  border: 1px solid var(--steel-beam);
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  cursor: pointer;
  color: var(--text-primary);
  text-transform: uppercase;
  transition: all 0.1s ease;
}

.theme-switch-industrial:hover {
  background: var(--wholesale-yellow);
  color: #0a0a0c;
}

.theme-switch-icon {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* 汉堡按钮 */
.mobile-toggle-btn {
  display: none;
  background: var(--bg-shelf);
  border: 1px solid var(--steel-beam);
  padding: 8px;
  cursor: pointer;
  color: var(--text-primary);
}

/* ---------------- 工业按钮标准 (Tactile Barcode Click Recoil) ---------------- */
.btn-industrial {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border: 1px solid var(--steel-beam);
  background: var(--wholesale-yellow);
  color: #0a0a0c;
  cursor: pointer;
  box-shadow: none;
  position: relative;
  transition: none; /* 0ms 电子墨水反应 */
}

.btn-industrial:hover {
  background: #0a0a0c;
  color: #ffffff;
  border-color: #0a0a0c;
}

[data-theme="dark"] .btn-industrial:hover {
  background: #ffffff;
  color: #0a0a0c;
  border-color: #ffffff;
}

/* 触感条码扫描器回弹效果 */
.btn-industrial:active {
  transform: translate(2px, 2px);
  filter: brightness(0.9);
}

.btn-industrial-outline {
  background: var(--bg-canvas);
  color: var(--text-primary);
  border: 1px solid var(--steel-beam);
}

.btn-industrial-outline:hover {
  background: var(--steel-beam);
  color: var(--bg-canvas);
}

.btn-industrial-sm {
  padding: 7px 14px;
  font-size: 0.78rem;
}

.btn-industrial-lg {
  padding: 15px 30px;
  font-size: 1rem;
}

.btn-industrial-block {
  width: 100%;
}

/* 条形码图形生成 */
.barcode-visual {
  height: 28px;
  width: 130px;
  background-image: repeating-linear-gradient(
    to right,
    currentColor 0px,
    currentColor 2px,
    transparent 2px,
    transparent 4px,
    currentColor 4px,
    currentColor 5px,
    transparent 5px,
    transparent 8px,
    currentColor 8px,
    currentColor 11px,
    transparent 11px,
    transparent 13px,
    currentColor 13px,
    currentColor 14px,
    transparent 14px,
    transparent 17px
  );
  opacity: 0.85;
}

/* ---------------- 货架主视觉区 (Warehouse Hero Section) ---------------- */
.hero-warehouse {
  border-bottom: 2px solid var(--steel-beam);
  padding: 48px 0 40px;
  background: var(--bg-canvas);
}

.warehouse-grid-frame {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  border: 1px solid var(--steel-beam);
  background: var(--bg-canvas);
}

.hero-main-content {
  padding: 44px 40px;
  border-right: 1px solid var(--steel-beam);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-sku-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 1px;
}

.sku-tag {
  background: var(--steel-beam);
  color: var(--bg-canvas);
  padding: 3px 8px;
  font-weight: 800;
}

[data-theme="dark"] .sku-tag {
  background: var(--wholesale-yellow);
  color: #0a0a0c;
}

.sku-location {
  color: var(--text-mono-muted);
}

.hero-title-industrial {
  font-size: 2.85rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 18px;
  color: var(--text-primary);
  text-transform: uppercase;
}

.hero-title-highlight {
  background: var(--wholesale-yellow);
  color: #0a0a0c;
  padding: 0 6px;
  display: inline;
}

.hero-summary-box {
  border-left: 3px solid var(--steel-beam);
  padding-left: 16px;
  margin-bottom: 28px;
}

.hero-summary-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--text-mono-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.hero-summary-text {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.hero-actions-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}

/* 货架仪表盘模拟侧栏 (Warehouse Shelving Telemetry) */
.hero-shelving-sidebar {
  background: var(--bg-shelf);
  display: flex;
  flex-direction: column;
}

.shelving-header {
  padding: 12px 18px;
  background: var(--bg-canvas);
  border-bottom: 1px solid var(--steel-beam);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.shelving-row {
  border-bottom: 1px solid var(--steel-beam-subtle);
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  background: var(--bg-shelf);
}

.shelving-row:last-child {
  border-bottom: none;
}

.shelf-spec-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-mono-muted);
  text-transform: uppercase;
}

.shelf-spec-val {
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--text-primary);
}

.shelf-spec-val span {
  font-size: 0.82rem;
  color: var(--text-mono-muted);
  font-weight: 500;
}

.shelf-status-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 2px 6px;
  background: var(--wholesale-yellow);
  color: #0a0a0c;
  font-weight: 800;
}

/* ---------------- 货架区通用排版 ---------------- */
.aisle-section {
  border-bottom: 2px solid var(--steel-beam);
  padding: 60px 0;
  position: relative;
}

.aisle-section-alt {
  background-color: var(--bg-shelf);
}

.aisle-header {
  border-bottom: 1px solid var(--steel-beam);
  padding-bottom: 16px;
  margin-bottom: 36px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 16px;
}

.aisle-number {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  background: var(--steel-beam);
  color: var(--bg-canvas);
  padding: 2px 8px;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: inline-block;
}

[data-theme="dark"] .aisle-number {
  background: var(--wholesale-yellow);
  color: #0a0a0c;
}

.aisle-title {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  text-transform: uppercase;
  color: var(--text-primary);
}

.aisle-meta-info {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-mono-muted);
  text-align: right;
}

/* ---------------- 3大核心优势 (Warehouse Shelving Columns) ---------------- */
.advantages-steel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--steel-beam);
  background: var(--steel-beam);
  gap: 1px; /* 产生硬核 1px 钢构分隔线 */
}

.advantage-column {
  background: var(--bg-canvas);
  padding: 32px 26px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.column-sku-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-mono-muted);
  border-bottom: 1px solid var(--steel-beam-subtle);
  padding-bottom: 12px;
  margin-bottom: 20px;
}

.advantage-title {
  font-size: 1.32rem;
  font-weight: 900;
  margin-bottom: 14px;
  color: var(--text-primary);
  line-height: 1.3;
}

.advantage-body {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.tech-spec-table {
  margin-top: auto;
  border-top: 1px solid var(--steel-beam);
  padding-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tech-spec-row {
  display: flex;
  justify-content: space-between;
  color: var(--text-secondary);
}

.tech-spec-row strong {
  color: var(--text-primary);
}

/* ---------------- 流媒体 & AI 图卡专区 ---------------- */
.media-ai-steel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--steel-beam);
  background: var(--steel-beam);
  gap: 1px;
}

.media-ai-card {
  background: var(--bg-canvas);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
}

.media-tag-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--steel-beam-subtle);
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.badge-esl-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 8px;
  border: 1px solid var(--steel-beam);
  background: var(--wholesale-yellow);
  color: #0a0a0c;
  text-transform: uppercase;
}

.media-ai-title {
  font-size: 1.6rem;
  font-weight: 900;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.media-ai-desc {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

/* 纯文字工业矩阵标签 (Zero generic AI bot icons) */
.industrial-tags-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-bottom: 28px;
}

.industrial-tag {
  border: 1px solid var(--steel-beam);
  background: var(--bg-shelf);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.industrial-tag span.status {
  font-size: 0.68rem;
  color: #0a0a0c;
  background: var(--wholesale-yellow);
  padding: 1px 4px;
  font-weight: 800;
}

/* ---------------- 电子货架标签 (ESL) 价格对比表 ---------------- */
.pricing-esl-shelf {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--steel-beam);
  background: var(--steel-beam);
  gap: 1px;
}

/* 电子货架标签 (Electronic Shelf Label - ESL) */
.esl-tag-card {
  background: var(--bg-esl-card);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: none; /* 电子墨水屏瞬态刷新 */
  border: 2px solid transparent;
}

/* E-INK REFRESH MICRO-INTERACTION (墨水屏毫秒级反色频闪交互) */
@keyframes eink-flicker {
  0% {
    background-color: var(--bg-esl-card);
    color: var(--text-primary);
  }
  20% {
    background-color: var(--steel-beam);
    color: var(--bg-canvas);
  }
  50% {
    background-color: var(--bg-esl-card);
    color: var(--text-primary);
  }
  75% {
    background-color: var(--steel-beam);
    color: var(--bg-canvas);
  }
  100% {
    background-color: #0a0a0c;
    color: #ffffff;
  }
}

.esl-tag-card:hover {
  animation: eink-flicker 0.16s steps(2, start) forwards;
  border-color: var(--wholesale-yellow);
}

.esl-tag-card:hover .esl-tier-title,
.esl-tag-card:hover .esl-price-big,
.esl-tag-card:hover .esl-meta-row,
.esl-tag-card:hover .esl-spec-line {
  color: #ffffff !important;
}

.esl-tag-card:hover .esl-spec-line {
  border-bottom-color: #27272a;
}

.esl-top-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  border-bottom: 1px solid var(--steel-beam-subtle);
  padding-bottom: 8px;
  margin-bottom: 14px;
}

.esl-barcode-mini {
  height: 16px;
  width: 70px;
  background-image: repeating-linear-gradient(
    to right,
    currentColor 0px,
    currentColor 1.5px,
    transparent 1.5px,
    transparent 3px
  );
  opacity: 0.8;
}

.esl-tier-title {
  font-size: 1.25rem;
  font-weight: 900;
  text-transform: uppercase;
  margin-bottom: 4px;
  letter-spacing: -0.5px;
}

.esl-tier-sub {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-mono-muted);
  margin-bottom: 18px;
}

.esl-price-box {
  background: var(--bg-shelf);
  border: 1px solid var(--steel-beam);
  padding: 12px 14px;
  margin-bottom: 20px;
}

.esl-price-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-mono-muted);
}

.esl-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.esl-currency {
  font-size: 1.1rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.esl-price-big {
  font-size: 2.3rem;
  font-weight: 900;
  font-family: var(--font-mono);
  letter-spacing: -1px;
}

.esl-price-period {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-mono-muted);
}

.esl-spec-list {
  display: flex;
  flex-direction: column;
  margin-bottom: 24px;
  flex-grow: 1;
}

.esl-spec-line {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--steel-beam-subtle);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.esl-spec-line span.key {
  color: var(--text-mono-muted);
}

.esl-spec-line span.val {
  font-weight: 700;
  color: var(--text-primary);
}

.esl-tag-card.popular {
  border: 2px solid var(--steel-beam);
  background: var(--bg-canvas);
}

.esl-popular-badge {
  position: absolute;
  top: -12px;
  right: 16px;
  background: var(--wholesale-yellow);
  color: #0a0a0c;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 900;
  padding: 2px 8px;
  border: 1px solid var(--steel-beam);
  text-transform: uppercase;
}

/* ---------------- 用户真实评价 (Warehouse Testimonials) ---------------- */
.reviews-steel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--steel-beam);
  background: var(--steel-beam);
  gap: 1px;
}

.review-industrial-card {
  background: var(--bg-canvas);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
}

.review-batch-stamp {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-mono-muted);
  border-bottom: 1px solid var(--steel-beam-subtle);
  padding-bottom: 10px;
  margin-bottom: 16px;
}

.review-stars-industrial {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #0a0a0c;
  background: var(--wholesale-yellow);
  padding: 1px 6px;
  font-weight: 800;
  border: 1px solid var(--steel-beam);
}

.review-body-text {
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex-grow: 1;
}

.review-user-footer {
  border-top: 1px solid var(--steel-beam);
  padding-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-mono);
}

.review-user-name {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text-primary);
}

.review-user-role {
  font-size: 0.72rem;
  color: var(--text-mono-muted);
}

/* ---------------- 常见问题解答 (FAQ) - 工业折叠面板 ---------------- */
.faq-industrial-container {
  max-width: 980px;
  margin: 0 auto;
  border: 1px solid var(--steel-beam);
  background: var(--bg-canvas);
}

.faq-row-item {
  border-bottom: 1px solid var(--steel-beam);
}

.faq-row-item:last-child {
  border-bottom: none;
}

.faq-toggle-trigger {
  width: 100%;
  text-align: left;
  background: var(--bg-canvas);
  border: none;
  padding: 20px 24px;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: background-color 0.1s ease;
}

.faq-toggle-trigger:hover {
  background: var(--bg-shelf);
}

.faq-symbol {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--steel-beam);
  background: var(--wholesale-yellow);
  color: #0a0a0c;
  flex-shrink: 0;
}

.faq-answer-industrial {
  display: none;
  padding: 0 24px 22px 24px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
  background: var(--bg-shelf);
  border-top: 1px dashed var(--steel-beam-subtle);
}

.faq-row-item.open .faq-answer-industrial {
  display: block;
}

.faq-row-item.open .faq-symbol {
  background: #0a0a0c;
  color: #ffffff;
}

[data-theme="dark"] .faq-row-item.open .faq-symbol {
  background: #ffffff;
  color: #0a0a0c;
}

/* ---------------- 底部呼吁横幅 (Bottom Barcode Deploy CTA) ---------------- */
.bottom-cta-warehouse {
  margin: 60px 0;
  border: 2px solid var(--steel-beam);
  background: var(--bg-canvas);
  padding: 44px 36px;
  display: grid;
  grid-template-columns: 1.8fr 1fr;
  align-items: center;
  gap: 30px;
}

.cta-left-text h2 {
  font-size: 2.1rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.cta-left-text p {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.cta-right-box {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 14px;
}

/* ---------------- 页脚 (Footer) - 严格保留四标题，新页面打开 ---------------- */
.footer-warehouse {
  background: var(--bg-shelf);
  border-top: 2px solid var(--steel-beam);
  padding: 44px 0 36px;
}

.footer-four-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.footer-nav-cell {
  font-family: var(--font-mono);
  font-size: 0.98rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-primary);
  border-bottom: 2px solid transparent;
  padding: 4px 6px;
  transition: all 0.1s ease;
}

.footer-nav-cell:hover {
  background: var(--wholesale-yellow);
  color: #0a0a0c;
  border-bottom-color: #0a0a0c;
}

.footer-steel-divider {
  height: 1px;
  background: var(--steel-beam-subtle);
  max-width: 600px;
  margin: 0 auto 20px;
}

.footer-warehouse-bottom {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-mono-muted);
}

.footer-warehouse-bottom strong {
  color: var(--text-primary);
}

/* ---------------- 推荐资讯 (Insights) 专属工业样式 ---------------- */
.insights-steel-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  border: 1px solid var(--steel-beam);
  background: var(--steel-beam);
  gap: 1px;
  margin-bottom: 50px;
}

.insights-articles-column {
  background: var(--bg-canvas);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.insight-article-row {
  border-bottom: 1px solid var(--steel-beam-subtle);
  padding-bottom: 30px;
}

.insight-article-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.insight-post-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-mono-muted);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.insight-post-title {
  font-size: 1.4rem;
  font-weight: 900;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.insight-post-excerpt {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
}

.insight-sidebar-panel {
  background: var(--bg-shelf);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-box-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  border-bottom: 1px solid var(--steel-beam);
  padding-bottom: 8px;
  text-transform: uppercase;
}

/* ---------------- 子页面通用工业排版 (About / Terms / Privacy / Sitemap) ---------------- */
.subpage-industrial-header {
  border-bottom: 2px solid var(--steel-beam);
  padding: 44px 0 32px;
  background: var(--bg-shelf);
}

.subpage-container {
  max-width: 940px;
  margin: 40px auto 70px;
}

.industrial-block {
  border: 1px solid var(--steel-beam);
  background: var(--bg-canvas);
  padding: 32px;
  margin-bottom: 24px;
}

.industrial-block-title {
  font-size: 1.35rem;
  font-weight: 900;
  border-bottom: 1px solid var(--steel-beam);
  padding-bottom: 12px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
}

.industrial-block p {
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.industrial-block p:last-child {
  margin-bottom: 0;
}

.industrial-block ul {
  padding-left: 20px;
  margin-bottom: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.industrial-alert {
  border: 1px solid var(--steel-beam);
  background: var(--wholesale-yellow);
  color: #0a0a0c;
  padding: 16px 20px;
  margin: 18px 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
}

/* ---------------- 响应式媒体查询 (@media) ---------------- */
@media (max-width: 1080px) {
  .pricing-esl-shelf {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .warehouse-grid-frame {
    grid-template-columns: 1fr;
  }

  .hero-main-content {
    border-right: none;
    border-bottom: 1px solid var(--steel-beam);
    padding: 30px 20px;
  }

  .advantages-steel-grid,
  .media-ai-steel-grid,
  .reviews-steel-grid,
  .insights-steel-layout {
    grid-template-columns: 1fr;
  }

  .bottom-cta-warehouse {
    grid-template-columns: 1fr;
  }

  .cta-right-box {
    align-items: stretch;
  }

  .mobile-toggle-btn {
    display: block;
  }

  .nav-aisle-menu {
    position: fixed;
    top: 96px;
    left: 0;
    width: 100%;
    background: var(--bg-canvas);
    border-bottom: 2px solid var(--steel-beam);
    flex-direction: column;
    display: none;
    z-index: 998;
  }

  .nav-aisle-menu.active {
    display: flex;
  }

  .nav-link-item {
    border-right: none;
    border-bottom: 1px solid var(--steel-beam-subtle);
    padding: 14px 20px;
  }

  .footer-four-nav {
    flex-direction: column;
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .pricing-esl-shelf {
    grid-template-columns: 1fr;
  }

  .hero-title-industrial {
    font-size: 2.1rem;
  }

  .top-telemetry-bar {
    display: none;
  }
}