/* ============================================
   BMS Lighting & Audio — Corporate Website
   White background | Red & black accent
   Responsive, SEO-friendly, EdgeOne-ready
   ============================================ */

:root {
  --color-primary: #c8102e;
  --color-primary-dark: #a00d24;
  --color-primary-light: #fbe6e9;
  --color-black: #111111;
  --color-dark: #1a1a1a;
  --color-gray-900: #222222;
  --color-gray-700: #444444;
  --color-gray-500: #666666;
  --color-gray-300: #cccccc;
  --color-gray-200: #e5e5e5;
  --color-gray-100: #f7f7f7;
  --color-white: #ffffff;
  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --container: 1280px;
  --radius: 4px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
  --transition: 0.25s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-gray-700);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover {
  color: var(--color-primary-dark);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-black);
  line-height: 1.2;
  margin: 0 0 0.6em;
  font-weight: 700;
}

p {
  margin: 0 0 1em;
}

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.5em;
}

/* Layout utilities */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--color-gray-100);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
}

.section-label {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 0.75rem;
}

.section-subtitle {
  color: var(--color-gray-500);
  font-size: 1.05rem;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

/* 文章列表：锁定每行 4 篇。
   .grid-3 用的是 auto-fit，大屏下容器加宽（--container 1480/1680px）会自动多塞一列，
   导致所有文章挤在同一行。这里改成固定列数，多出的文章自动换到下一行。 */
.grid-articles {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 1100px) {
  .grid-articles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

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

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-light {
  background: var(--color-white);
  color: var(--color-black);
}

.btn-light:hover {
  background: var(--color-gray-200);
}

.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.85rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(17, 17, 17, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 120px;
}

.logo {
  display: flex;
  align-items: center;
  color: var(--color-white);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.logo:hover {
  color: var(--color-white);
  opacity: 0.9;
}

.logo img {
  height: 48px;
  width: auto;
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.main-nav a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding: 0.25rem 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-white);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

/* 导航第 8 项（Video）加入后，中等屏宽下收紧间距，避免挤压换行 */
@media (min-width: 901px) and (max-width: 1120px) {
  .main-nav {
    gap: 1.1rem;
  }

  .main-nav a {
    font-size: 0.9rem;
  }
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: transform var(--transition), opacity var(--transition);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-black);
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
  display: flex;
  align-items: center;
}

.hero-slide.active {
  opacity: 1;
}

/* Hero 文案不参与幻灯片交叉淡出：旧文案瞬时隐藏、新文案延迟淡入。
   否则在 0.8s 过渡期内新旧两屏文字会同时半透明，出现叠影（手机端尤为明显）。 */
.hero-content {
  opacity: 1;
  transition: opacity 0.6s ease 0.15s, transform 0.6s ease 0.15s;
}

.hero-slide:not(.active) .hero-content {
  opacity: 0;
  transform: translateY(16px);
  transition: none;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.4) 60%, rgba(0,0,0,0.2) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  color: var(--color-white);
  padding-top: 120px;
}

.hero-eyebrow {
  color: var(--color-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 4rem);
  color: var(--color-white);
  margin-bottom: 1.25rem;
  line-height: 1.1;
}

.hero-text {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2rem;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-controls {
  position: absolute;
  bottom: 2rem;
  right: 1.5rem;
  z-index: 3;
  display: flex;
  gap: 0.75rem;
}

.hero-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: none;
  cursor: pointer;
  transition: background var(--transition);
}

.hero-dot.active {
  background: var(--color-primary);
}

/* 无障碍：用户开启"减少动态效果"时关闭 hero 所有过渡 */
@media (prefers-reduced-motion: reduce) {
  .hero-slide,
  .hero-slide .hero-content {
    transition: none !important;
  }
}

/* Stats */
.stats-bar {
  background: var(--color-dark);
  color: var(--color-white);
  padding: 2.5rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  margin-top: 0.5rem;
}

/* Cards */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  display: block;
  aspect-ratio: 4 / 3;
  background: var(--color-gray-100);
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-body {
  padding: 1.25rem;
}

.card-meta {
  font-size: 0.8rem;
  color: var(--color-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.card-title {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.card-text {
  font-size: 0.95rem;
  color: var(--color-gray-500);
  margin-bottom: 1rem;
}

.card-link {
  font-weight: 600;
  font-size: 0.9rem;
}

/* Videos —— B 站播放器采用 facade 模式：先显示封面与播放按钮，
   点击后才注入 iframe，未点击的访客不会加载任何第三方脚本。 */
.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--color-black);
  overflow: hidden;
}

.video-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

/* 已填 bvid 的卡片整块可点 */
.video-frame:not([data-bvid=""]) {
  cursor: pointer;
}

.video-play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 84px;
  height: 84px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  cursor: pointer;
  transition: transform var(--transition), background var(--transition);
}

.video-play span {
  width: 0;
  height: 0;
  margin-left: 6px;
  border-style: solid;
  border-width: 14px 0 14px 23px;
  border-color: transparent transparent transparent var(--color-primary);
}

.card:hover .video-play,
.video-play:hover {
  transform: translate(-50%, -50%) scale(1.06);
  background: #fff;
}

/* 视频卡右下角的时长角标 */
.video-time {
  position: absolute;
  right: 0.6rem;
  bottom: 0.6rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.72);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  pointer-events: none;
}

/* 尚未配置 B 站视频时的占位 */
.video-soon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  padding: 1rem;
}

/* 首页 About 区块下方的视频栏：与 Video 页一致的多列排布 */
.home-video {
  margin-top: 3rem;
}

.home-video .video-card {
  overflow: hidden;
}

@media (max-width: 700px) {
  .video-play {
    width: 64px;
    height: 64px;
  }

  .video-play span {
    border-width: 11px 0 11px 18px;
  }
}

/* Products */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.filter-btn {
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--color-gray-300);
  background: var(--color-white);
  color: var(--color-gray-700);
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.search-box {
  max-width: 480px;
  margin: 0 auto 2rem;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.75rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
}

.search-box input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.search-box::before {
  content: "🔍";
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.5;
}

.product-card .card-image {
  aspect-ratio: 1 / 1;
  background: #fff;
  display: block;
  cursor: pointer;
}

.product-card .card-image picture {
  display: block;
  width: 100%;
  height: 100%;
}

.product-card .card-image img {
  object-fit: contain;
  padding: 1rem;
  /* 抠图后的产品加一层柔和落影，卡片里不再像"贴"在白纸上 */
  filter: drop-shadow(0 12px 16px rgba(17, 17, 17, 0.14));
}

.specs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.spec-tag {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
  font-size: 0.78rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

/* About page */
.about-hero {
  background: linear-gradient(135deg, var(--color-black) 0%, #2a0000 100%);
  color: var(--color-white);
  padding: 10rem 0 5rem;
}

.about-hero h1 {
  color: var(--color-white);
}

/* ---------- Journey Timeline (About) ---------- */
.journey {
  position: relative;
  max-width: 1040px;
  margin: 0 auto;
}

/* Central rail, fading softly at both ends */
.journey::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(
    180deg,
    rgba(200, 16, 46, 0) 0%,
    rgba(200, 16, 46, 0.4) 5%,
    var(--color-primary) 50%,
    rgba(200, 16, 46, 0.4) 95%,
    rgba(200, 16, 46, 0) 100%
  );
}

.journey-item {
  position: relative;
  width: 50%;
  padding: 0 2.75rem 2rem 0;
}

.journey-item:nth-child(even) {
  margin-left: 50%;
  padding: 0 0 2rem 2.75rem;
}

/* Node sitting on the rail */
.journey-item::before {
  content: "";
  position: absolute;
  top: 1.5rem;
  right: -9px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  box-shadow: 0 0 0 4px rgba(200, 16, 46, 0.1);
  z-index: 2;
  transition: background var(--transition), box-shadow var(--transition);
}

.journey-item:nth-child(even)::before {
  right: auto;
  left: -9px;
}

.journey-item:hover::before {
  background: var(--color-primary);
  box-shadow: 0 0 0 6px rgba(200, 16, 46, 0.15);
}

.journey-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-top: 3px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 1.3rem 1.5rem 1.35rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.journey-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.journey-meta {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 0.5rem;
}

.journey-year {
  font-size: 1.7rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-primary);
}

.journey-tag {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gray-500);
}

.journey-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-gray-700);
}

.journey-card p + p {
  margin-top: 0.7rem;
}

.journey-outro {
  max-width: 720px;
  margin: 2.5rem auto 0;
  text-align: center;
  font-style: italic;
  color: var(--color-gray-500);
}

/* Scroll reveal — JS adds .journey--animate, so without JS every item stays visible */
.journey--animate .journey-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.journey--animate .journey-item.is-revealed {
  opacity: 1;
  transform: none;
}

@media (max-width: 768px) {
  .journey::before {
    left: 8px;
    transform: none;
  }

  .journey-item,
  .journey-item:nth-child(even) {
    width: 100%;
    margin-left: 0;
    padding: 0 0 1.5rem 2.25rem;
  }

  .journey-item::before,
  .journey-item:nth-child(even)::before {
    left: 0;
    right: auto;
    top: 1.35rem;
  }

  .journey-card {
    padding: 1.1rem 1.2rem 1.15rem;
  }

  .journey-year {
    font-size: 1.45rem;
  }

  .journey-outro {
    text-align: left;
    margin-top: 1.75rem;
  }
}

.cert-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}

.cert-item {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
  font-weight: 600;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
}

.contact-info-card {
  background: var(--color-dark);
  color: var(--color-white);
  padding: 2rem;
  border-radius: var(--radius);
}

.contact-info-card h3 {
  color: var(--color-white);
}

.contact-method {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  border-radius: 50%;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--color-gray-900);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-status {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-top: 1rem;
  display: none;
}

.form-status.success {
  display: block;
  background: #e6f7ed;
  color: #1a7a4b;
}

.form-status.error {
  display: block;
  background: #fce8ea;
  color: var(--color-primary-dark);
}

/* 蜜罐字段（反垃圾）：真人不可见、不会填，只有机器人会填；
   脱离文档流，不影响布局与键盘导航 */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* 表单提交中：按钮禁用态 */
button[type="submit"][disabled] {
  opacity: 0.65;
  cursor: not-allowed;
}

/* Map iframe */
.map-frame {
  width: 100%;
  height: 360px;
  border: 0;
  border-radius: var(--radius);
  margin-top: 1.5rem;
}

/* Footer */
.site-footer {
  background: var(--color-black);
  color: rgba(255, 255, 255, 0.7);
  padding: 4rem 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-title {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.875rem;
}

.footer-bottom a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* AI Chat Widget */
/* ---------- Cookie 同意横幅（Consent Mode v2） ----------
   左下角卡片式，避开右下角的在线客服按钮；
   只在 EEA/英国/瑞士访客面前出现，且不遮挡正文（不锁滚动）。 */
.cookie-banner {
  position: fixed;
  left: 1.5rem;
  bottom: 1.5rem;
  z-index: 1090;
  width: min(30rem, calc(100vw - 3rem));
  padding: 1.1rem 1.25rem 1.15rem;
  background: #1b1e23;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 14px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.32);
  color: #e9ebef;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.55;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.24s ease, transform 0.24s ease;
}

.cookie-banner.is-hidden {
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
}

.cookie-banner .cookie-text {
  margin: 0 0 0.85rem;
  color: #c9ced6;
}

.cookie-banner .cookie-text a {
  color: #ff7b85;
  text-decoration: underline;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.cookie-btn {
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  padding: 0.55rem 1rem;
  border: 1px solid transparent;
  border-radius: 8px;
  transition: background 0.18s ease, border-color 0.18s ease;
}

.cookie-accept {
  background: var(--color-primary);
  color: #fff;
}

.cookie-accept:hover {
  background: var(--color-primary-dark);
}

.cookie-reject {
  background: transparent;
  color: #e9ebef;
  border-color: rgba(255, 255, 255, 0.3);
}

.cookie-reject:hover {
  border-color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 640px) {
  .cookie-banner {
    left: 0.75rem;
    right: 0.75rem;
    bottom: 5.75rem; /* 让开右下的客服按钮 */
    width: auto;
    padding: 1rem;
  }

  .cookie-actions {
    flex-direction: column;
  }

  .cookie-btn {
    width: 100%;
  }
}

.chat-widget {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1100;
  font-family: var(--font-sans);
}

.chat-toggle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  transition: transform var(--transition);
}

.chat-toggle:hover {
  transform: scale(1.05);
}

.chat-window {
  position: absolute;
  bottom: 76px;
  right: 0;
  width: 360px;
  max-width: calc(100vw - 2rem);
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: none;
  flex-direction: column;
  border: 1px solid var(--color-gray-200);
}

.chat-window.open {
  display: flex;
}

.chat-header {
  background: var(--color-black);
  color: var(--color-white);
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-header h4 {
  color: var(--color-white);
  margin: 0;
  font-size: 1rem;
}

.chat-close {
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 1.25rem;
  cursor: pointer;
}

.chat-body {
  height: 320px;
  overflow-y: auto;
  padding: 1rem;
  background: var(--color-gray-100);
}

.chat-message {
  margin-bottom: 0.75rem;
  max-width: 85%;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  font-size: 0.9rem;
  line-height: 1.45;
}

.chat-message.bot {
  background: var(--color-white);
  color: var(--color-gray-700);
  border-bottom-left-radius: 2px;
}

.chat-message.user {
  background: var(--color-primary);
  color: var(--color-white);
  margin-left: auto;
  border-bottom-right-radius: 2px;
}

.chat-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.chat-quick button {
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  cursor: pointer;
  color: var(--color-gray-700);
  transition: all var(--transition);
}

.chat-quick button:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.chat-input {
  display: flex;
  padding: 0.75rem;
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-white);
}

.chat-input input {
  flex: 1;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius);
  padding: 0.65rem 0.9rem;
  font-family: inherit;
  font-size: 0.9rem;
}

.chat-input input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.chat-send {
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius);
  padding: 0 1rem;
  margin-left: 0.5rem;
  cursor: pointer;
  font-weight: 600;
}

.chat-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 18px;
  height: 18px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.65rem;
  font-weight: 700;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 2px solid var(--color-white);
}

/* Breadcrumb */
.breadcrumb {
  background: var(--color-gray-100);
  padding: 1rem 0;
  font-size: 0.875rem;
}

.breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 0.5rem;
}

.breadcrumb a {
  color: var(--color-gray-500);
}

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

/* Utilities */
.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-0 { margin-bottom: 0; }

/* Responsive */
@media (max-width: 900px) {
  /* 小屏隐藏 CTA 按钮，避免与 Logo、菜单键挤压（可从菜单进 Contact 页） */
  .nav-cta .btn {
    display: none;
  }

  .logo img {
    height: 36px;
  }

  .header-inner {
    height: 72px;
  }

  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-dark);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    gap: 1rem;
    transform: translateY(-150%);
    opacity: 0;
    transition: transform var(--transition), opacity var(--transition);
    pointer-events: none;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .menu-toggle {
    display: flex;
  }

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

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

  .hero-controls {
    right: 50%;
    transform: translateX(50%);
  }
}

@media (max-width: 600px) {
  .section {
    padding: 3rem 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .chat-window {
    width: 100vw;
    right: -1.5rem;
    bottom: 76px;
    border-radius: 0;
  }
}

/* ---------- Product Detail Page ---------- */
.product-detail-hero {
  background: var(--color-black);
  color: var(--color-white);
  padding: 8rem 0 3rem;
}

.product-detail-hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.pd-gallery {
  /* 详情页用白底产品照（2026-10-27 改回）：黑色灯具放黑底会和白边打架，
     白卡是商品照的标准承载方式，产品轮廓最清楚。 */
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.pd-main-image {
  display: grid;
  place-items: center;
  min-height: 360px;
}

.pd-main-image img {
  max-height: 480px;
  width: auto;
  object-fit: contain;
}

.pd-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 0.75rem;
}

.pd-thumb {
  background: var(--color-white);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 0.25rem;
  cursor: pointer;
  transition: all var(--transition);
  overflow: hidden;
}

.pd-thumb:hover,
.pd-thumb.active {
  border-color: var(--color-primary);
}

.pd-thumb img {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  display: block;
}

@media (max-width: 768px) {
  .pd-thumbs {
    grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  }
}

.pd-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pd-subtitle {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.pd-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  color: var(--color-white);
  margin-bottom: 0;
}

.pd-model {
  color: rgba(255,255,255,0.55);
  font-size: 1rem;
  font-weight: 500;
}

.pd-intro {
  color: rgba(255,255,255,0.8);
  font-size: 1.05rem;
  line-height: 1.7;
}

.pd-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.pd-features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pd-features li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  color: rgba(255,255,255,0.8);
}

.pd-features li::before {
  content: "▪";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.pd-section {
  padding: 4rem 0;
}

.pd-tabs {
  display: flex;
  gap: 0.25rem;
  border-bottom: 2px solid var(--color-gray-200);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.pd-tab {
  background: none;
  border: none;
  padding: 0.85rem 1.5rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-gray-500);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
}

.pd-tab:hover {
  color: var(--color-primary);
}

.pd-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.pd-panel {
  display: none;
}

.pd-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.spec-group {
  margin-bottom: 2rem;
}

/* 无规格书的产品：参数表末尾的说明条（由 build-product-specs.py 生成） */
.spec-note {
  margin: 0.75rem 0 0;
  padding: 0.9rem 1.1rem;
  background: var(--color-gray-100);
  border-left: 3px solid var(--color-primary);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-gray-700);
}

/* ---------- 产品页 FAQ（由 build-product-specs.py 生成） ---------- */
.pd-faq .container {
  max-width: 900px;
}

.pd-faq-item {
  border-top: 1px solid var(--color-gray-200);
  padding: 1.25rem 0;
}

.pd-faq-item:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.pd-faq-item h3 {
  font-size: 1.05rem;
  line-height: 1.5;
  margin: 0 0 0.5rem;
  color: var(--color-black);
}

.pd-faq-item p {
  margin: 0;
  font-size: 0.975rem;
  line-height: 1.75;
  color: var(--color-gray-700);
}

.spec-group h3 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-black);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-gray-200);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.spec-table tr {
  border-bottom: 1px solid var(--color-gray-200);
}

.spec-table td {
  padding: 0.85rem 0.5rem;
  vertical-align: top;
}

.spec-table td:first-child {
  width: 35%;
  font-weight: 600;
  color: var(--color-gray-900);
  text-transform: capitalize;
}

.spec-table td:last-child {
  color: var(--color-gray-700);
}

.dimensions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.dim-card {
  background: var(--color-gray-100);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.dim-card h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-500);
  margin-bottom: 0.5rem;
}

.dim-card p {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-black);
  margin: 0;
}

.dim-accessories {
  background: var(--color-gray-100);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.dim-accessories h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.dim-accessories ul {
  margin: 0;
  padding-left: 1.25rem;
}

.dim-accessories li {
  margin-bottom: 0.35rem;
}

.pd-cta {
  background: var(--color-gray-100);
  padding: 3rem 0;
  text-align: center;
}

@media (max-width: 900px) {
  .product-detail-hero .container {
    grid-template-columns: 1fr;
  }

  .pd-gallery img {
    max-height: 320px;
  }
}

/* ---------- Large-screen optimization (27"+ monitors) ---------- */
@media (min-width: 1600px) {
  :root {
    --container: 1480px;
  }
}

@media (min-width: 1920px) {
  :root {
    --container: 1680px;
  }

  .section {
    padding: 6.5rem 0;
  }
}

/* 导航栏内层与内容容器保持一致宽度 */
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* ---------- Articles (blog) ---------- */
.article-wrap {
  /* 容器放宽到 1180px：文章配图得以放大显示（原先 500px 上限在 27 寸屏上过小）。
     文字行宽由下方 820px 限宽规则控制，配图与并排图使用完整容器宽度。 */
  max-width: 1180px;
  margin: 0 auto;
}

/* 文章文字内容限宽居中，保持舒适行宽；配图（figure）与并排图（.article-duo）不受此限制 */
.article-meta,
.article-body > p,
.article-body > h2,
.article-body > h3,
.article-body > h4,
.article-body > ul,
.article-body > ol,
.article-body > blockquote,
.article-body > table,
.article-body > .article-lede,
.article-body > .article-callout,
.article-cta {
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--color-gray-700);
}

.article-body h2 {
  font-size: 1.6rem;
  margin: 3rem 0 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--color-gray-200);
}

.article-body h2::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 2px;
  margin-right: 10px;
}

.article-body h3 {
  font-size: 1.2rem;
  margin: 2rem 0 0.6rem;
  color: var(--color-black);
}

.article-body p {
  margin: 0.8rem 0;
}

.article-body ul,
.article-body ol {
  margin: 0.8rem 0;
  padding-left: 1.6rem;
}

.article-body li {
  margin: 0.4rem 0;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2rem 0;
  font-size: 0.95rem;
}

.article-body th {
  background: var(--color-black);
  color: #fff;
  padding: 0.7rem 0.9rem;
  text-align: left;
}

.article-body td {
  border: 1px solid var(--color-gray-200);
  padding: 0.6rem 0.9rem;
  vertical-align: top;
}

.article-body tr:nth-child(even) td {
  background: var(--color-gray-100);
}

/* 文章内的图片网格表格（产品/设备对比）：去掉表格外观、用满容器宽度，图片得以放大显示 */
.article-body table.img-grid {
  max-width: 1180px;
  border-collapse: separate;
  border-spacing: 1rem 1.2rem;
  margin: 1.6rem auto;
}

.article-body table.img-grid td {
  border: none;
  background: none;
  padding: 0;
  text-align: center;
  vertical-align: top;
}

.article-body table.img-grid td img {
  margin: 0 auto;
}

.article-body figure {
  margin: 1.6rem auto;
  text-align: center;
}

.article-body figure img {
  /* 配图按原始分辨率显示（不强行放大，避免糊），最大到 1180px 容器宽。
     竖版长图 / 海报由 HTML 内联的 max-width + max-height 单独限制。 */
  display: block;
  max-width: 100%;
  max-height: none;
  width: auto;
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-md);
}

.article-body figcaption {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-gray-500);
  margin: 0.6rem auto 0;
  max-width: 820px;
}

/* 文章内双图并排（现场照片等横版图：比 .article-imgcell 的固定 180px 高更适合大画面） */
.article-body .article-duo {
  display: flex;
  gap: 1rem;
  margin: 1.6rem 0;
  flex-wrap: wrap;
}

.article-body .article-duo figure {
  flex: 1 1 320px;
  min-width: 0;
  margin: 0;
  text-align: center;
}

.article-body .article-duo figure img {
  width: 100%;
  max-width: 100%;
  max-height: none;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 1px solid var(--color-gray-200);
}

.article-body .article-duo figure figcaption {
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--color-gray-500);
  margin-top: 0.55rem;
}

@media (max-width: 700px) {
  .article-body .article-duo {
    flex-direction: column;
    gap: 1.2rem;
  }

  .article-body .article-duo figure {
    flex: 1 1 100%;
  }
}

.article-imgrow {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin: 1.4rem 0;
}

.article-imgcell {
  flex: 1 1 220px;
  max-width: 260px;
  text-align: center;
}

.article-imgcell img {
  max-width: 100%;
  height: 180px;
  object-fit: contain;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  background: #fff;
}

.article-imgcell span {
  display: block;
  font-size: 0.85rem;
  color: var(--color-gray-500);
  margin-top: 0.4rem;
}

.article-lede {
  font-size: 1.15rem;
  color: var(--color-gray-500);
  border-left: 4px solid var(--color-primary);
  padding-left: 1.1rem;
  margin: 0 0 2.5rem;
}

.article-chain {
  background: var(--color-gray-100);
  border: 1px dashed var(--color-primary);
  border-radius: var(--radius);
  padding: 0.9rem 1.2rem;
  text-align: center;
  font-weight: 700;
  color: var(--color-black);
  margin: 1.2rem 0;
}

/* 文章内提示框（安全警告 / 重要提醒） */
.article-callout {
  margin: 2rem 0;
  border-left: 4px solid #e6a23c;
  background: #fff8e6;
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.15rem 1.4rem;
  color: #6b4a0f;
}

.article-callout p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.65;
}

.article-callout strong {
  color: #a65d00;
}

.article-cta {
  margin-top: 3rem;
  background: var(--color-primary-light);
  border: 1px solid #f0c3cb;
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  color: var(--color-black);
}

.article-meta {
  color: var(--color-gray-500);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

/* 文章卡片（articles 列表页） */
.article-card {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.article-card .thumb {
  aspect-ratio: 16 / 9;
  background-size: cover;
  background-position: center;
  background-color: var(--color-black);
}

.article-card .card-body {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.article-card h3 {
  font-size: 1.15rem;
  margin: 0 0 0.6rem;
}

.article-card .excerpt {
  color: var(--color-gray-500);
  font-size: 0.92rem;
  flex: 1;
}

/* 大屏下文章正文加宽，提高空间利用率 */
@media (min-width: 1600px) {
  .article-wrap {
    max-width: 1080px;
  }
}

@media (min-width: 1920px) {
  .article-wrap {
    max-width: 1240px;
  }

  .article-body {
    font-size: 1.12rem;
  }
}

/* Articles 列表封面：完整显示整张图（流程图等 16:9 内容不被裁切），与 News 排版一致 */
body[data-page="articles"] .card-image {
  display: flex;
  align-items: center;
  justify-content: center;
}

body[data-page="articles"] .card-image img {
  object-fit: contain;
}

/* 文章排版修复：表格横向滚动 + 图片行移动端堆叠 */
.article-body table {
  min-width: 560px;
}

@media (max-width: 720px) {
  .article-body table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-collapse: separate;
    border-spacing: 0;
  }

  .article-imgrow {
    flex-direction: column;
  }

  .article-imgcell {
    flex: 1 1 100%;
  }
}
/* ============================================================
   首页 Banner（方案 C：窄幅 + 产品露出）
   静态单屏，无轮播。右侧产品实拍抠图高过区块下沿，
   压到下一个白色区块上，形成「产品露出」的层次。
   背景类 .hero-c--a / --b / --c 只切换底图，其余样式共用。
   ============================================================ */
.hero-c {
  position: relative;
  z-index: 2;                 /* 必须高于后续区块，产品图才能压上去 */
  display: flex;
  align-items: center;
  min-height: clamp(520px, 64vh, 680px);
  padding: 132px 0 76px;      /* 132px 让开固定头部 */
  background: #08080a;
  overflow: visible;
}

.hero-c-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-c-photo {
  position: absolute;
  inset: 0;
  background-image: url("../assets/images/hero/hero-bg-a.jpg");
  background-size: cover;
  background-position: 58% 46%;
  opacity: 0.9;
  /* 左侧淡出，让照片只作为右侧氛围底纹，避免与文案抢空间 */
  -webkit-mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0) 24%, rgba(0, 0, 0, 1) 62%);
  mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0) 24%, rgba(0, 0, 0, 1) 62%);
}

/* 纯渐变版（不使用照片） */
.hero-c--flat .hero-c-photo {
  background-image: none;
  background:
    radial-gradient(52% 68% at 74% 58%, rgba(200, 16, 46, 0.30) 0%, rgba(200, 16, 46, 0) 68%),
    radial-gradient(80% 90% at 100% 100%, rgba(38, 42, 58, 0.9) 0%, rgba(8, 8, 10, 0) 70%);
  opacity: 1;
}

.hero-c--b .hero-c-photo {
  background-image: url("../assets/images/hero/hero-bg-b.jpg");
  background-position: 66% 48%;
  opacity: 0.55;
}

.hero-c--c .hero-c-photo {
  background-image: url("../assets/images/hero/hero-bg-c.jpg");
  background-position: 50% 46%;
  opacity: 0.5;
}

.hero-c-shade {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(26% 34% at 86% 96%, rgba(200, 16, 46, 0.34) 0%, rgba(200, 16, 46, 0) 72%),
    linear-gradient(90deg, rgba(8, 8, 10, 0.92) 0%, rgba(8, 8, 10, 0.84) 30%, rgba(8, 8, 10, 0.42) 60%, rgba(8, 8, 10, 0.18) 100%),
    linear-gradient(180deg, rgba(8, 8, 10, 0.62) 0%, rgba(8, 8, 10, 0) 34%, rgba(8, 8, 10, 0.62) 100%);
}

.hero-c-inner {
  position: relative;   /* 产品图以容器为定位基准，跟随 1280/1480/1680 三种容器宽度 */
  z-index: 2;
  width: 100%;
}

.hero-c-copy {
  max-width: 660px;
  color: var(--color-white);
}

.hero-c-eyebrow {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  max-width: 100%;
  gap: 0.55rem;
  margin-bottom: 1.25rem;
  padding: 0.4rem 0.85rem;
  border: 1px solid rgba(200, 16, 46, 0.5);
  border-radius: 999px;
  background: rgba(200, 16, 46, 0.14);
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-c-eyebrow::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.28);
}

.hero-c-title {
  margin: 0 0 1rem;
  color: var(--color-white);
  font-size: clamp(1.9rem, 3.05vw, 3rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.hero-c-title em {
  font-style: normal;
  color: var(--color-primary);
}

.hero-c-text {
  max-width: 520px;
  margin: 0 0 1.75rem;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.05rem;
  line-height: 1.65;
}

.hero-c-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-bottom: 2rem;
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.55);
  background: transparent;
  color: var(--color-white);
}

.btn-ghost:hover {
  border-color: var(--color-white);
  background: var(--color-white);
  color: var(--color-black);
}

.hero-c-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 2.25rem;
  margin: 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  list-style: none;
}

.hero-c-facts li {
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.8125rem;
  line-height: 1.4;
}

.hero-c-facts strong {
  display: block;
  margin-bottom: 0.15rem;
  color: var(--color-white);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* 产品露出：底部超出区块，压到下一屏 */
.hero-c-product {
  position: absolute;
  z-index: 3;
  /* 右边界与 .container 内容边缘对齐：1280 / 1480 / 1680 三种容器宽度都适配 */
  right: calc((100% - min(100%, var(--container))) / 2 + 1.5rem);
  bottom: 22px;              /* 完全收在 banner 内，不再压到下个区块 */
  display: flex;
  align-items: flex-end;
  height: clamp(340px, 47vh, 530px);
  margin: 0;
}

/* 地面投影：让产品"站"在 banner 里，而不是浮着 */
.hero-c-product::after {
  content: "";
  position: absolute;
  left: 6%;
  right: 6%;
  bottom: -14px;
  height: 16px;
  background: radial-gradient(50% 50% at 50% 50%, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0) 72%);
  filter: blur(5px);
  pointer-events: none;
}

.hero-c-product picture {
  display: flex;
  align-items: flex-end;
  height: 100%;
}

.hero-c-product img {
  display: block;
  width: auto;
  height: 100%;
  filter: drop-shadow(0 10px 18px rgba(0, 0, 0, 0.45));
}

@media (max-width: 1100px) {
  .hero-c-product {
    height: clamp(300px, 42vh, 440px);
  }
}

@media (max-width: 900px) {
  .hero-c {
    display: block;
    min-height: 0;
    padding: 116px 0 0;
  }

  .hero-c-photo {
    background-position: 66% 40%;
    opacity: 0.45;
  }

  .hero-c-copy {
    max-width: none;
  }

  .hero-c-title {
    font-size: clamp(1.85rem, 6vw, 2.5rem);
  }

  .hero-c-title br {
    display: none;   /* 手机端不强制断行，交给自然折行 */
  }

  .hero-c-text {
    font-size: 1rem;
  }

  .hero-c-facts {
    gap: 1.5rem;
    padding-bottom: 0.5rem;
  }

  .hero-c-product {
    position: relative;
    right: auto;
    bottom: auto;
    width: min(62%, 300px);
    height: auto;
    margin: 1.5rem auto -30px;
    justify-content: center;
  }

  .hero-c-product picture {
    width: 100%;
    height: auto;
  }

  .hero-c-product img {
    width: 100%;
    height: auto;
  }

}

@media (max-width: 600px) {
  .hero-c {
    padding-top: 104px;
  }

  .hero-c-eyebrow {
    padding: 0.35rem 0.7rem;
    font-size: 0.625rem;
    letter-spacing: 0.08em;
  }

  .hero-c-title {
    font-size: 1.7rem;
  }

  .hero-c-facts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem 1.25rem;
  }

  .hero-c-facts strong {
    font-size: 1.1rem;
  }

  .hero-c-product {
    width: min(70%, 260px);
  }
}

/* ============================================================
   Applications（原 Projects 页，2026-10-26 改造）
   场景卡片：浅底 + 透明产品抠图 + 推荐型号 chips
   现场相册：4:3 裁切 + 底部渐变说明
   ============================================================ */
.app-card {
  display: flex;
  flex-direction: column;
}

.app-media {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
  padding: 1.5rem;
  background: radial-gradient(72% 66% at 50% 56%, #eef0f4 0%, #ffffff 74%);
}

.app-media img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 14px 18px rgba(17, 17, 17, 0.16));
  transition: transform 0.4s ease;
}

.app-card:hover .app-media img {
  transform: translateY(-3px) scale(1.03);
}

.app-card .card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.15rem 1.25rem 1.35rem;
}

.app-card .card-title {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.app-card .card-text {
  color: var(--color-gray-500);
  font-size: 0.925rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.app-models {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}

.app-models a {
  display: inline-block;
  padding: 0.22rem 0.6rem;
  border: 1px solid var(--color-gray-200);
  border-radius: 999px;
  color: var(--color-gray-700);
  font-size: 0.75rem;
  line-height: 1.5;
  transition: border-color var(--transition), color var(--transition);
}

.app-models a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* 场景栅格：桌面固定 3 列（6 张正好两行），平板 2 列，手机 1 列 */
.app-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

@media (max-width: 620px) {
  .app-grid {
    grid-template-columns: 1fr;
  }
}

/* 现场相册 */
.shot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.shot {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-dark);
}

.shot img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.shot:hover img {
  transform: scale(1.04);
}

.shot figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2.2rem 1rem 0.85rem;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.8) 100%);
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.8125rem;
  line-height: 1.5;
}

@media (max-width: 900px) {
  .app-media {
    padding: 1rem;
  }

  .app-card .card-text {
    font-size: 0.9rem;
  }
}

/* ============================================================
   产品页：同系列选型对比表（2026-10-27 / A3）
   ============================================================ */
.pd-compare {
  border-top: 1px solid var(--color-gray-200);
}

.pd-compare-note {
  color: var(--color-gray-500);
  font-size: 0.92rem;
  max-width: 720px;
  margin-bottom: 1.25rem;
}

.cmp-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.cmp-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.cmp-table th {
  text-align: left;
  padding: 0.7rem 0.75rem;
  background: var(--color-gray-100);
  color: var(--color-gray-700);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--color-gray-200);
  white-space: nowrap;
}

.cmp-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--color-gray-200);
  color: var(--color-gray-700);
  vertical-align: top;
}

.cmp-table td:first-child {
  width: 30%;
  color: var(--color-gray-900);
}

.cmp-table td a {
  color: var(--color-black);
  font-weight: 600;
}

.cmp-table td a:hover {
  color: var(--color-primary);
}

.cmp-model {
  display: inline-block;
  margin-top: 0.1rem;
  color: var(--color-gray-500);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

.cmp-table tr.is-current {
  background: var(--color-primary-light);
}

.cmp-table tr.is-current td {
  border-bottom-color: #f3ccd4;
}

.cmp-table tr.is-current td:first-child::after {
  content: " · this model";
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.pd-compare-cta {
  margin-top: 1.1rem;
  color: var(--color-gray-500);
  font-size: 0.92rem;
}

.pd-compare-cta a {
  color: var(--color-primary);
  font-weight: 600;
}

@media (max-width: 900px) {
  .cmp-table {
    font-size: 0.85rem;
  }

  .cmp-table th,
  .cmp-table td {
    padding: 0.6rem 0.55rem;
  }
}