/* ========================================
   SAGA 萨伽 — 神鹰光学 官网样式系统
   深空墨蓝 + 香槟金 | 深色默认
   ======================================== */

/* ===== CSS 变量 ===== */
:root {
  /* 浅色主题（默认） */
  --bg-primary: #FBFAF8;
  --bg-secondary: #F3F1ED;
  --bg-tertiary: #E8E5DF;
  --bg-card: rgba(255, 255, 255, 0.6);
  --bg-card-hover: rgba(255, 255, 255, 0.85);
  --bg-glass: rgba(251, 250, 248, 0.85);

  --text-primary: #1E1B18;
  --text-secondary: #57534E;
  --text-tertiary: #9B9590;

  --gold: #B89548;
  --gold-light: #C8A968;
  --gold-dark: #9A7B3A;
  --gold-glow: rgba(184, 149, 72, 0.12);

  --border: rgba(30, 27, 24, 0.08);
  --border-gold: rgba(184, 149, 72, 0.35);

  --nav-bg: rgba(251, 250, 248, 0.85);
  --nav-bg-solid: #FBFAF8;

  --shadow-sm: 0 2px 8px rgba(30, 27, 24, 0.06);
  --shadow-md: 0 8px 24px rgba(30, 27, 24, 0.08);
  --shadow-lg: 0 20px 60px rgba(30, 27, 24, 0.12);
  --shadow-gold: 0 4px 20px rgba(184, 149, 72, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --max-width: 1200px;
  --header-height: 72px;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  --font-en: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-zh: 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --gradient-gold: linear-gradient(135deg, #C8A968 0%, #B89548 50%, #9A7B3A 100%);
  --gradient-dark: linear-gradient(180deg, #FBFAF8 0%, #F3F1ED 100%);
  --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.7) 0%, rgba(255,255,255,0.3) 100%);
}

/* 深色主题（切换项） */
[data-theme="dark"] {
  --bg-primary: #1A1D29;
  --bg-secondary: #222633;
  --bg-tertiary: #2A2E3D;
  --bg-card: rgba(255, 255, 255, 0.07);
  --bg-card-hover: rgba(255, 255, 255, 0.11);
  --bg-glass: rgba(26, 29, 41, 0.85);

  --text-primary: #F7F7F8;
  --text-secondary: #B8C0CC;
  --text-tertiary: #8A94A6;

  --gold: #C8A968;
  --gold-light: #D4B87A;
  --gold-dark: #B89548;
  --gold-glow: rgba(200, 169, 104, 0.15);

  --border: rgba(255, 255, 255, 0.12);
  --border-gold: rgba(200, 169, 104, 0.35);

  --nav-bg: rgba(26, 29, 41, 0.85);
  --nav-bg-solid: #1A1D29;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);

  --gradient-dark: linear-gradient(180deg, #1A1D29 0%, #222633 100%);
  --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.03) 100%);
}

/* ===== Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;   /* 旧浏览器回退：禁止横向滚动 */
  overflow-x: clip;     /* clip 不创建滚动容器，不会破坏 position: sticky 吸顶 */
  transition: background var(--transition), color var(--transition);
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }

/* ===== 布局 ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 70px 0;
}

.section--alt {
  background: var(--bg-secondary);
}

/* 联系页：一屏内完整展示（联系方式 + 在线留言 + 提交按钮） */
.section--compact {
  padding: 22px 0;
}

.section__head {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 36px;
}

/* 区块标题下的「查看全部」入口链接 */
.section__more {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gold);
  transition: opacity var(--transition);
}
.section__more:hover {
  opacity: 0.75;
}

/* 关于页：紧凑型区块标题（发展历程/品牌理念/制造工艺/生产实录） */
.section__head--compact {
  max-width: 640px;
  margin-bottom: 26px;
}
.section__head--compact .section__eyebrow {
  margin-bottom: 6px;
}
.section__head--compact .section__title {
  font-size: 1.75rem;
  margin-bottom: 8px;
}
.section__head--compact .section__desc {
  font-size: 0.95rem;
}

.section__eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section__title {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
}

/* 规格区块标题中的产品名：金色突出、独占一行，截图时一眼分辨是哪款产品的参数 */
/* 详情页区块标题中的产品名：金色突出独占一行，截图时一眼分辨是哪款产品（规格/特性/包装清单共用） */
.pd-section__title-name {
  display: block;
  color: var(--gold);
  font-weight: 600;
  font-size: 0.78em;
}
.pd-section__title-name + [data-i18n] {
  display: block;
  font-size: 0.78em;
  color: var(--text-primary);
}

.section__desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.text-gradient-gold {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--gold {
  background: var(--gradient-gold);
  color: #FFFFFF;
  box-shadow: var(--shadow-gold);
}

.btn--gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(200, 169, 104, 0.35);
}

.btn--ghost {
  border: 1.5px solid var(--border-gold);
  color: var(--text-primary);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--gold);
  background: var(--gold-glow);
}

.btn--lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.btn--sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

/* ===== Header / 导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.03em;
}

.nav__logo-mark {
  flex-shrink: 0;
}

.nav__logo-text {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.nav__logo-sub {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--gold);
}

.nav__menu {
  display: flex;
  gap: 8px;
}

.nav__link {
  display: block;
  padding: 8px 16px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  position: relative;
  text-align: center;
  line-height: 1.25;
  min-width: 2.4em;
}

.nav__link:hover,
.nav__link.active {
  color: var(--text-primary);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width var(--transition);
}

.nav__link:hover::after {
  width: 20px;
}

/* ===== 导航下拉菜单 ===== */
.nav__item--dropdown {
  position: relative;
}

.nav__item--dropdown > .nav__link {
  padding-right: 22px; /* 给右侧箭头留出空间 */
}

.nav__item--dropdown > .nav__link::before {
  content: '';
  position: absolute;
  right: 7px;
  top: 50%;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  opacity: 0.5;
  transform: translateY(-50%);
  transition: transform var(--transition);
}

.nav__item--dropdown:hover > .nav__link::before {
  transform: translateY(-50%) rotate(180deg);
}

.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 180px;
  background: var(--nav-bg-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 100;
  list-style: none;
  margin: 0;
}

.nav__item--dropdown:hover .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav__dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
}

.nav__dropdown-item:hover {
  background: var(--bg-elevated);
  color: var(--gold);
}

.nav__dropdown-item svg {
  flex-shrink: 0;
  opacity: 0.6;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.theme-toggle:hover {
  color: var(--gold);
  background: var(--bg-card);
}

.theme-toggle .icon-sun { display: block; }
.theme-toggle .icon-moon { display: none; }

[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.lang-toggle:hover {
  border-color: var(--border-gold);
  color: var(--gold);
}

.lang-toggle span.active {
  color: var(--gold);
}

.nav__hamburger {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav__hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger.active span:nth-child(2) {
  opacity: 0;
}
.nav__hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center; /* 左侧文案区垂直居中 */
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__aperture {
  position: absolute;
  top: 50%;
  right: -100px;
  transform: translateY(-50%);
  width: 600px;
  height: 600px;
}

.hero__ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1px solid var(--border-gold);
  transform: translate(-50%, -50%);
}

.hero__ring--1 { width: 100%; height: 100%; opacity: 0.15; animation: spin 60s linear infinite; }
.hero__ring--2 { width: 80%; height: 80%; opacity: 0.2; animation: spin 45s linear infinite reverse; }
.hero__ring--3 { width: 60%; height: 60%; opacity: 0.3; animation: spin 30s linear infinite; }
.hero__ring--4 { width: 40%; height: 40%; opacity: 0.4; animation: spin 20s linear infinite reverse; }
.hero__ring--5 { width: 20%; height: 20%; opacity: 0.6; }

.hero__core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-gold);
  transform: translate(-50%, -50%);
  filter: blur(2px);
  opacity: 0.6;
}

.hero__glow {
  position: absolute;
  top: 30%;
  right: 15%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--gold-glow) 0%, transparent 70%);
  filter: blur(40px);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,0,0,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.02) 1px, transparent 1px);
  background-size: 50px 50px;
}

[data-theme="dark"] .hero__grid {
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
}

/* 首页 hero 背景：右侧轮播图区域（底色已归一为页面背景色），完整展示不裁切。
   轮播图片与数量在 script.js 顶部的 HERO_SLIDES 数组配置 */
.hero__sketches {
  position: absolute;
  right: 0%;
  top: 50%;
  transform: translateY(-50%);
  width: 54vw;
  height: 35.8vw;
  max-width: 880px;
  max-height: 583px;
  z-index: 0;
  opacity: 0.85;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

/* 轮播单张 slide：绝对定位叠放，交叉淡入淡出 */
.hero-slide {
  position: absolute;
  inset: 0;
  background-position: left center;
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 0.9s ease;
  will-change: opacity;
}

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

/* ===== Hero 轮播控制（箭头 + 指示点） ===== */
/* 2026-08-28：改放文字内容流内（按钮与统计数字之间），随内容垂直居中，
   彻底避免贴视口底部定位与统计数字在不同屏幕高度下重叠 */
.hero-carousel-ui {
  position: static;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 0 0 40px;
}

.hero-carousel-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-gold);
  background: rgba(255, 255, 255, 0.65);
  color: var(--text-secondary);
  cursor: pointer;
  backdrop-filter: blur(6px);
  transition: all 0.25s ease;
}

.hero-carousel-btn:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: #fff;
  transform: scale(1.06);
}

.hero-carousel-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-carousel-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: var(--radius-full);
  background: var(--border-gold);
  opacity: 0.55;
  cursor: pointer;
  transition: all 0.25s ease;
}

.hero-carousel-dot.is-active {
  width: 24px;
  opacity: 1;
  background: var(--gold);
}

[data-theme="dark"] .hero-carousel-btn {
  background: rgba(17, 22, 36, 0.55);
  color: var(--text-secondary);
}

[data-theme="dark"] .hero-carousel-dot {
  background: var(--gold-dark);
  opacity: 0.6;
}

[data-theme="dark"] .hero-carousel-dot.is-active {
  background: var(--gold-light);
  opacity: 1;
}

/* 深色模式下压暗轮播图 */
.hero__sketches::after {
  content: '';
  position: absolute;
  inset: 0;
  background: #0B0F1A;
  opacity: 0;
  pointer-events: none;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(90deg,
    rgba(251, 250, 248, 1) 0%,
    rgba(251, 250, 248, 0.92) 28%,
    rgba(251, 250, 248, 0.55) 55%,
    rgba(251, 250, 248, 0.2) 75%,
    transparent 100%);
  pointer-events: none;
}

[data-theme="dark"] .hero__sketches {
  opacity: 0.55;
}

[data-theme="dark"] .hero__sketches::after {
  opacity: 0.6;
}

[data-theme="dark"] .hero__overlay {
  background: linear-gradient(90deg,
    rgba(11, 15, 26, 1) 0%,
    rgba(11, 15, 26, 0.95) 30%,
    rgba(11, 15, 26, 0.65) 60%,
    rgba(11, 15, 26, 0.25) 82%,
    transparent 100%);
}

@media (max-width: 1100px) {
  .hero__sketches {
    width: 62vw;
    height: 41.1vw;
    right: 0%;
    opacity: 0.75;
  }
  .hero-slide {
    background-position: left center;
  }
  .hero__overlay {
    background: linear-gradient(90deg,
      rgba(251, 250, 248, 1) 0%,
      rgba(251, 250, 248, 0.9) 35%,
      rgba(251, 250, 248, 0.45) 65%,
      transparent 100%);
  }
  [data-theme="dark"] .hero__overlay {
    background: linear-gradient(90deg,
      rgba(11, 15, 26, 1) 0%,
      rgba(11, 15, 26, 0.95) 40%,
      rgba(11, 15, 26, 0.55) 70%,
      transparent 100%);
  }
}

@media (max-width: 768px) {
  .hero {
    align-items: center; /* 移动端恢复垂直居中，避免顶部固定导致内容被截断 */
  }
  .hero__content {
    padding-top: 0; /* 移动端取消固定顶部间距 */
  }
  .hero__sketches {
    width: 90vw;
    height: 59.7vw;
    right: 50%;
    top: auto;
    bottom: 2%;
    transform: translateX(50%);
    opacity: 0.35;
  }
  .hero-slide {
    background-position: center bottom;
  }
  .hero-carousel-ui {
    gap: 10px;
    margin-bottom: 28px;
  }
  .hero-carousel-btn {
    display: none;
  }
  .hero-carousel-dot {
    width: 6px;
    height: 6px;
  }
  .hero-carousel-dot.is-active {
    width: 18px;
  }
  .hero__overlay {
    background: linear-gradient(180deg,
      rgba(251, 250, 248, 1) 0%,
      rgba(251, 250, 248, 0.95) 35%,
      rgba(251, 250, 248, 0.5) 70%,
      transparent 100%);
  }
  [data-theme="dark"] .hero__overlay {
    background: linear-gradient(180deg,
      rgba(11, 15, 26, 1) 0%,
      rgba(11, 15, 26, 0.95) 40%,
      rgba(11, 15, 26, 0.55) 75%,
      transparent 100%);
  }
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  transition: opacity 0.3s ease;
}

/* 轮播切屏时左侧文案的淡出/淡入过渡（由 script.js 切换类名） */
.hero__content.hero-copy-switching {
  opacity: 0.25;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.hero__badge > span:last-child {
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 8px var(--gold);
  animation: pulse 2s ease-in-out infinite;
}

.hero__title {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1; /* 子级 span 控制行高，避免多余行距导致高度波动 */
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  min-height: 2.3em; /* 固定 2 行高度 */
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
}

.hero__title span {
  display: block;
  line-height: 1.15;
}

.hero__title .text-gradient-gold {
  -webkit-text-fill-color: transparent;
}

.hero__subtitle {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 560px;
  /* 固定预留 3 行高度：各轮播屏副标题行数不同(2~3行)，高度恒定后
     下方按钮/统计区位置在切屏时保持完全一致 */
  min-height: 5.72em;
}

.hero__actions {
  display: flex;
  gap: 16px;
  margin-bottom: 24px; /* 轮播控制条已移入下方内容流，间距相应压缩 */
  flex-wrap: wrap;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.hero__stat {
  text-align: left;
}

.hero__stat-num,
.hero__stat-suffix {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
}

.hero__stat-suffix {
  font-size: 1.4rem;
}

.hero__stat-label {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  margin-top: 8px;
}

/* ===== 信任带 ===== */
.trust-bar {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}

.trust-bar__inner {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.trust-bar__item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.trust-bar__item strong {
  color: var(--gold);
  font-weight: 700;
}

.trust-bar__divider {
  width: 1px;
  height: 20px;
  background: var(--border);
}

/* ===== 产品分类速览 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.category-card {
  position: relative;
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-md);
}

.category-card:hover::before {
  transform: scaleX(1);
}

.category-card__icon {
  width: 88px;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--gold);
  background: var(--gold-glow);
  overflow: hidden;
}

.category-card__icon--img {
  background: transparent;
}

.category-card__icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.category-card__icon svg {
  width: 32px;
  height: 32px;
}

.category-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}


.category-card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== 产品卡片 ===== */
.product-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.product-showcase__col {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--gradient-card);
  border: 1px solid var(--border);
}

.product-showcase__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.product-showcase__title {
  font-size: 1.1rem;
  font-weight: 700;
}

.product-showcase__more {
  font-size: 0.82rem;
  color: var(--gold);
  font-weight: 500;
  transition: gap var(--transition);
}

.product-card {
  display: flex;
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.product-card:hover {
  background: var(--bg-card-hover);
}

.product-card__img {
  width: 90px;
  height: 90px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.product-card__img-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.product-card__tag {
  position: absolute;
  top: 6px;
  left: 6px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.product-card__tag--new {
  background: var(--gold);
  color: #FFFFFF;
}

.product-card__tag--hot {
  background: #ef4444;
  color: #fff;
}

.product-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.product-card__name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.product-card__specs {
  font-size: 0.78rem;
  color: var(--gold);
  margin-bottom: 4px;
}

.product-card__desc {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: calc(2 * 1.45em);
}

/* ===== 应用场景预览 ===== */
.scenario-grid {
  display: grid;
  /* 列数随卡片数量自适应：6张=6列，5张=5列，以此类推 */
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}

.scenario-card {
  position: relative;
  height: 180px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition);
}

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

.scenario-card__bg {
  position: absolute;
  inset: 0;
}

/* 右上角「N 款」产品数角标：半透明胶囊，复杂背景图上也保持可读 */
.scenario-card__count {
  position: absolute;
  bottom: 12px;
  right: 12px;
  z-index: 2;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(11, 15, 26, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.22);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.4;
  color: #fff;
  letter-spacing: 0.02em;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
  pointer-events: none;
}

.scenario-card__overlay {
  position: absolute;
  inset: 0;
  /* 文字可读性三重保险：
     1. 渐变提前起暗（30% 处开始压暗，文字区有稳定暗底）；
     2. 中部再加一层径向暗角，兜住图标+标题区，复杂亮图也看得清；
     3. 文字本体带投影（见 title / title-en） */
  background:
    radial-gradient(
      ellipse 90% 60% at 50% 78%,
      rgba(11, 15, 26, 0.55) 0%,
      rgba(11, 15, 26, 0.28) 55%,
      transparent 85%
    ),
    linear-gradient(180deg, transparent 30%, rgba(11, 15, 26, 0.55) 62%, rgba(11, 15, 26, 0.92) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
}

.scenario-card__icon {
  /* 图标高度统一 36px 并贴底：SVG(24px) 与图片图标(默认36px) 底边对齐，
     文字块高度固定后，图标位置跨卡片也完全一致 */
  height: 36px;
  display: flex;
  align-items: flex-end;
  margin-bottom: 12px;
  color: #fff;
}

/* 自定义图片图标：scenarios[].icon 填图片路径（如 assets/icons/xx.png）时生效
   尺寸由 JS 按场景配置的 icon_size 控制（默认 36px），object-fit 保证不变形 */
.scenario-card__icon-img {
  display: block;
  object-fit: contain;
  border-radius: 6px;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.35));
}

.scenario-card__title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.3;
  /* 标题固定占两行高度、贴底排布：一行/两行标题的最后一行基线跨卡片完全对齐 */
  min-height: 2.6em;
  display: flex;
  align-items: flex-end;
  /* 右下角角标占位，避免长标题压到 badge */
  padding-right: 54px;
  /* 背景图偏亮/偏花时的兜底投影 */
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.65), 0 2px 8px rgba(0, 0, 0, 0.4);
}

.scenario-card__title-en {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.78);
  margin-top: 3px;
  line-height: 1.3;
  /* 英文同样固定两行高度、贴底排布：一行/两行英文名的最后一行基线跨卡片完全对齐 */
  min-height: 2.6em;
  display: flex;
  align-items: flex-end;
  /* 右下角角标占位 */
  padding-right: 54px;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6), 0 1px 6px rgba(0, 0, 0, 0.35);
}

/* ===== 核心优势 ===== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.advantage-card {
  padding: 28px 20px;
  border-radius: var(--radius-lg);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.advantage-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
}

.advantage-card__num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--gold);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}

.advantage-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

.advantage-card__desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== CTA Banner ===== */
.cta-banner {
  position: relative;
  padding: 80px 0;
  text-align: center;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.cta-banner__title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-banner__desc {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.cta-banner__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 64px 0 24px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer__brand {
  max-width: 320px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: 16px;
}


.footer__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer__col-title {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.footer__link {
  display: block;
  font-size: 0.88rem;
  color: var(--text-tertiary);
  padding: 6px 0;
  transition: color var(--transition);
}

.footer__link:hover {
  color: var(--gold);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 12px;
  line-height: 1.5;
  white-space: nowrap;
}

.footer__contact-item svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--gold);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--text-tertiary);
}

.footer__bottom-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  min-width: 0;
}

.footer__icp {
  color: var(--text-tertiary);
  text-decoration: none;
  font-size: 0.82rem;
  transition: color 0.2s ease;
}

.footer__icp:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* 页脚访问计数（数据来自 GET api/visit，离线/自包含版自动隐藏） */
.footer__visit {
  color: var(--text-tertiary);
  font-size: 0.82rem;
  margin: 0;
}

.footer__visit strong {
  color: var(--primary);
  font-weight: 700;
  margin: 0 2px;
}

.footer__social {
  display: flex;
  gap: 16px;
}

.footer__social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  color: var(--text-tertiary);
  transition: all var(--transition);
}

.footer__social a:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ===== 产品页 Sticky 导航 ===== */
.product-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 50;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.product-nav__inner {
  display: flex;
  justify-content: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.product-nav__inner::-webkit-scrollbar { display: none; }

.product-nav__link {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all var(--transition);
}

.product-nav__link:hover,
.product-nav__link.active {
  color: var(--gold);
  background: var(--gold-glow);
}

/* ===== 产品全宽区块（博冠式） ===== */
.product-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}

.product-section:nth-child(even) {
  background: var(--bg-secondary);
}

.product-section__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.product-section:nth-child(even) .product-section__inner {
  direction: rtl;
}

.product-section:nth-child(even) .product-section__content,
.product-section:nth-child(even) .product-section__visual {
  direction: ltr;
}

.product-section__visual {
  height: 400px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-section__content {
  max-width: 500px;
}

.product-section__category {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.product-section__title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-section__title-en {
  font-size: 0.88rem;
  color: var(--text-tertiary);
  margin-bottom: 16px;
}

.product-section__tagline {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--gold);
  margin-bottom: 16px;
}

.product-section__desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.product-section__subcategories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.subcategory-card {
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}

.subcategory-card:hover {
  border-color: var(--border-gold);
  background: var(--bg-card-hover);
}

.subcategory-card__name {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.subcategory-card__name-en {
  font-size: 0.72rem;
  color: var(--text-tertiary);
}

.product-section__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== 新品速递（4 列网格） ===== */
.new-arrivals {
  padding: 60px 0;
}

.new-arrivals__track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.new-product-card {
  border-radius: var(--radius-lg);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
}

.new-product-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.new-product-card__img {
  aspect-ratio: 1 / 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.new-product-card__img-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.new-product-card__body {
  padding: 20px;
}

.new-product-card__name {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.new-product-card__specs {
  font-size: 0.78rem;
  color: var(--gold);
  margin-bottom: 8px;
}

.new-product-card__desc {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: calc(2 * 1.5em);
}

/* ===== 畅销产品网格 ===== */
.best-sellers__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.best-seller-card {
  border-radius: var(--radius-lg);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
  position: relative;
}

.best-seller-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.best-seller-card__rank {
  position: absolute;
  top: 12px;
  left: 12px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-gold);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  z-index: 1;
}

.best-seller-card__img {
  aspect-ratio: 1 / 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.best-seller-card__img-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.best-seller-card__body {
  padding: 16px;
}

.best-seller-card__name {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.best-seller-card__specs {
  font-size: 0.75rem;
  color: var(--gold);
}

/* ===== 表单 ===== */
.contact-form {
  display: grid;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.form-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.form-input,
.form-textarea,
.form-select {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  transition: all var(--transition);
}

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

.form-textarea {
  resize: vertical;
  min-height: 78px;
}

.form-error {
  font-size: 0.72rem;
  color: #ef4444;
  margin-top: 4px;
  display: none;
}

.form-error.show {
  display: block;
}

/* ===== 动画 ===== */
@keyframes spin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--gold); }
  50% { opacity: 0.6; box-shadow: 0 0 16px var(--gold); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero__title { font-size: 3rem; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(3, 1fr); }
  .scenario-grid { grid-template-columns: repeat(3, 1fr); }
  .best-sellers__grid { grid-template-columns: repeat(2, 1fr); }
  .product-section__inner { grid-template-columns: 1fr; gap: 32px; }
  .product-section:nth-child(even) .product-section__inner { direction: ltr; }
  .product-section__visual { height: 300px; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__contact-item { white-space: normal; }
}

@media (max-width: 768px) {
  .nav__menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--nav-bg-solid);
    padding: 16px;
    gap: 4px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
  }

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

  .nav__link {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }

  /* 移动端下拉菜单展开显示 */
  .nav__dropdown {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    background: transparent;
    padding: 0 0 0 20px;
    min-width: 0;
  }

  .nav__item--dropdown > .nav__link::before {
    display: none;
  }

  .nav__dropdown-item {
    padding: 8px 16px;
    font-size: 0.85rem;
  }

  .nav__hamburger { display: flex; }
  .nav__cta { display: none; }
  .lang-toggle { display: none; }

  .hero__title { font-size: 2.2rem; }
  .hero__subtitle {
    font-size: 0.95rem;
    /* 手机端副标题固定预留 4 行高度：内容块总高度恒定，
       垂直居中位置在切屏时保持一致（窄屏下最长文案占 4 行）。
       必须写在这里（基础规则之后），否则会被基础 min-height 覆盖 */
    min-height: 6.8em;
  }
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .hero__aperture { display: none; }

  .section { padding: 50px 0; }
  .section__title { font-size: 1.8rem; }

  /* 手机端「六大产品系列」一行两列；卡片内容收紧适配窄列（仅移动端，PC 不变） */
  .category-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .category-card { padding: 20px 14px; }
  .category-card__icon { width: 64px; margin-bottom: 12px; }
  .category-card__title { font-size: 1rem; margin-bottom: 6px; }
  .category-card__desc { font-size: 0.78rem; line-height: 1.5; }
  .product-showcase { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  /* 首页「应用场景」卡：手机端与应用场景页同规格（3:4 竖版），不再是宽扁卡 */
  #scenarios .scenario-card { height: auto; aspect-ratio: 3 / 4; }
  #scenarios .scenario-card__overlay { padding: 14px; }
  #scenarios .scenario-card__icon { height: 30px; margin-bottom: 8px; }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .best-sellers__grid { grid-template-columns: repeat(2, 1fr); }
  .new-arrivals__track { grid-template-columns: repeat(2, 1fr); }
  .product-section__subcategories { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom { flex-direction: column; gap: 16px; text-align: center; }
  .footer__bottom-left { align-items: center; }

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

  .trust-bar__inner { flex-direction: column; gap: 12px; }
  .trust-bar__divider { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero__title { font-size: 1.8rem; }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  /* 首页应用场景卡保持两列竖版（3:4 单列太高，不做 1 列） */
  #scenarios .scenario-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  #scenarios .scenario-card__title { font-size: 0.85rem; }
  #scenarios .scenario-card__title-en { font-size: 0.65rem; }
  .scenario-grid { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: 1fr; }
  .best-sellers__grid { grid-template-columns: 1fr; }
  .new-arrivals__track { grid-template-columns: 1fr; }
}

/* ===== 工具类 ===== */
.text-center { text-align: center; }

/* ===== 面包屑 ===== */
.breadcrumb {
  padding-top: calc(var(--header-height) + 16px);
  padding-bottom: 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.breadcrumb__inner {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
}

.breadcrumb__link {
  color: var(--text-secondary);
  transition: color var(--transition);
}

.breadcrumb__link:hover {
  color: var(--gold);
}

.breadcrumb__sep {
  color: var(--text-tertiary);
  font-size: 0.75rem;
}

.breadcrumb__current {
  color: var(--gold);
  font-weight: 600;
}

/* ===== 分类详情布局 ===== */
.category-detail {
  padding-bottom: 70px;
}

.category-detail__layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  align-items: start;
}

/* ===== 左侧分类导航 ===== */
.category-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 16px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.category-sidebar__title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.category-sidebar__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 20px;
}

.category-sidebar__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: all var(--transition);
  cursor: pointer;
}

.category-sidebar__item:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.category-sidebar__item.active {
  background: var(--gold-glow);
  color: var(--gold);
  font-weight: 600;
}

.category-sidebar__item-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
  transition: background var(--transition);
}

.category-sidebar__item:hover .category-sidebar__item-dot {
  background: var(--text-tertiary);
}

.category-sidebar__item.active .category-sidebar__item-dot {
  background: var(--gold);
  box-shadow: 0 0 6px var(--gold);
}

.category-sidebar__cta {
  width: 100%;
  justify-content: center;
}

/* ===== 分类 Hero ===== */
.cat-hero {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 16px 24px;
  border-radius: var(--radius-xl);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  margin-bottom: 24px;
  overflow: hidden;
  position: relative;
}

.cat-hero__content {
  max-width: none;
}

.cat-hero__eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 4px;
}

.cat-hero__title {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.cat-hero__title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  border-radius: 2px;
  background: var(--gradient-gold);
  margin-top: 6px;
}

.cat-hero__tagline {
  display: inline;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gold);
  margin-left: 12px;
  vertical-align: baseline;
  letter-spacing: 0.02em;
}

.cat-hero__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 720px;
}

/* ===== 子分类 ===== */
.cat-subcategories {
  margin-bottom: 28px;
}

.cat-section__title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  padding-left: 14px;
}

.cat-section__title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 20px;
  background: var(--gradient-gold);
  border-radius: 2px;
}

.cat-subcategories__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.cat-subcat-card {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}

.cat-subcat-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.cat-subcat-card__name {
  display: inline-block;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0;
}

/* ===== 产品网格 ===== */
.cat-products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cat-product-card {
  border-radius: var(--radius-lg);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
  position: relative;
}

.cat-product-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.cat-product-card__img {
  aspect-ratio: 1 / 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.cat-product-card__img-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.cat-product-card__tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  z-index: 1;
}

.cat-product-card__tag--new {
  background: var(--gold);
  color: #FFFFFF;
}

.cat-product-card__tag--hot {
  background: #ef4444;
  color: #fff;
}

.cat-product-card__body {
  padding: 20px;
}

.cat-product-card__name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.cat-product-card__specs {
  font-size: 0.78rem;
  color: var(--gold);
  margin-bottom: 8px;
}

.cat-product-card__desc {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== 分类底部 CTA ===== */
.cat-cta {
  margin-top: 48px;
  padding: 48px 32px;
  border-radius: var(--radius-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  text-align: center;
}

.cat-cta__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.cat-cta__desc {
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.cat-cta__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 分类详情页响应式 ===== */
@media (max-width: 1024px) {
  .category-detail__layout {
    grid-template-columns: 200px 1fr;
    gap: 24px;
  }

  .cat-hero {
    padding: 20px;
  }

  .cat-hero__title {
    font-size: 1.75rem;
  }

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

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

@media (max-width: 768px) {
  .category-detail__layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .category-sidebar {
    position: relative;
    top: 0;
    padding: 16px 12px;
  }

  .category-sidebar__list {
    flex-direction: row;
    overflow-x: auto;
    scrollbar-width: none;
    gap: 4px;
    padding-bottom: 8px;
  }

  .category-sidebar__list::-webkit-scrollbar {
    display: none;
  }

  .category-sidebar__item {
    white-space: nowrap;
    flex-shrink: 0;
    padding: 8px 14px;
  }

  .category-sidebar__title {
    display: none;
  }

  .category-sidebar__cta {
    display: none;
  }

  .cat-hero {
    padding: 14px 16px;
    text-align: left;
  }

  .cat-hero__title {
    font-size: 1.5rem;
  }

  .cat-hero__title::after {
    margin-top: 6px;
  }

  .cat-hero__eyebrow,
  .cat-hero__tagline {
    text-align: left;
  }

  .cat-products__grid {
    grid-template-columns: 1fr;
  }

  .cat-subcategories__grid {
    grid-template-columns: 1fr;
  }

  .cat-cta {
    padding: 32px 20px;
  }

}

@media (max-width: 480px) {
  .cat-products__grid {
    grid-template-columns: 1fr;
  }

  .cat-product-card__img {
    aspect-ratio: 16 / 10;
    max-height: 260px;
  }

  .breadcrumb__inner {
    font-size: 0.78rem;
  }
}
.mt-0 { margin-top: 0; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-32 { margin-top: 32px; }
.mb-0 { margin-bottom: 0; }
.mb-16 { margin-bottom: 16px; }
.mb-32 { margin-bottom: 32px; }
.hidden { display: none; }

/* ========================================
   子页面通用样式（about/certifications/news/contact/applications/downloads）
   ======================================== */

/* ===== 子页 Hero ===== */
.page-hero {
  position: relative;
  padding: calc(var(--header-height) + 60px) 0 50px;
  text-align: center;
  overflow: hidden;
  background: var(--gradient-dark);
}

/* 面包屑下方的 hero：上方空间由面包屑条承担，压缩顶部内边距避免双层留白 */
.page-hero--after-breadcrumb {
  padding-top: 28px;
  padding-bottom: 40px;
}

/* 联系页：进一步压缩 hero，让给联系方式 + 表单一屏显示 */
.page-hero--compact {
  padding-top: calc(var(--header-height) + 32px);
  padding-bottom: 24px;
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-hero__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border-gold);
}

.page-hero__ring--1 {
  width: 420px;
  height: 420px;
  top: -180px;
  right: -100px;
  opacity: 0.25;
}

.page-hero__ring--2 {
  width: 260px;
  height: 260px;
  top: -90px;
  right: 60px;
  opacity: 0.2;
}

.page-hero__glow {
  position: absolute;
  width: 480px;
  height: 480px;
  top: -240px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, var(--gold-glow) 0%, transparent 65%);
  opacity: 0.8;
}

.page-hero__eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 10px;
  position: relative;
}

.page-hero__eyebrow::before,
.page-hero__eyebrow::after {
  content: '';
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--border-gold);
  vertical-align: middle;
  margin: 0 12px;
}

.page-hero__title {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 12px;
  position: relative;
}

.page-hero__desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  position: relative;
}

/* ===== 通用 CTA 卡（多页复用） ===== */
.about-cta {
  text-align: center;
  padding: 64px 40px;
  border-radius: var(--radius-xl);
  background: var(--gradient-card);
  border: 1px solid var(--border-gold);
  position: relative;
  overflow: hidden;
}

.about-cta::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 50%;
  border: 1px solid var(--border-gold);
  opacity: 0.4;
}

.about-cta__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
}

.about-cta__desc {
  color: var(--text-secondary);
  margin-bottom: 28px;
  position: relative;
}

.about-cta__actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* ===== 关于我们：数据带 ===== */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.about-stats__item {
  padding: 28px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.about-stats__item:hover {
  transform: translateY(-4px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-gold);
}

.about-stats__num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--gold);
  font-family: var(--font-en);
}

.about-stats__suffix {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--gold);
  margin-left: 2px;
}

.about-stats__label {
  margin-top: 4px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ===== 关于我们：品牌故事 ===== */
.about-story {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.about-story__visual {
  position: relative;
  display: flex;
  justify-content: center;
  padding: 40px 0;
}

.about-story__lens {
  position: relative;
  width: 300px;
  height: 300px;
}

.about-story__ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid var(--border-gold);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.about-story__ring--1 { width: 300px; height: 300px; opacity: 0.3; }
.about-story__ring--2 { width: 210px; height: 210px; opacity: 0.5; }
.about-story__ring--3 { width: 130px; height: 130px; opacity: 0.75; }

.about-story__core {
  position: absolute;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-gold);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 40px var(--gold-glow);
}

.about-story__cross {
  position: absolute;
  background: var(--border-gold);
  opacity: 0.35;
}

.about-story__cross--h { width: 300px; height: 1px; top: 50%; left: 0; }
.about-story__cross--v { width: 1px; height: 300px; left: 50%; top: 0; }

.about-story__badge {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-en);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--gold);
  padding: 6px 18px;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-full);
  background: var(--bg-glass);
}

.about-story__text {
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 18px;
}

.about-story__quote {
  position: relative;
  padding: 20px 24px 20px 56px;
  border-left: 2px solid var(--gold);
  background: var(--bg-card);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-top: 26px;
}

.about-story__quote-mark {
  position: absolute;
  left: 18px;
  top: 6px;
  font-size: 2.6rem;
  font-family: Georgia, serif;
  color: var(--gold);
  opacity: 0.8;
  line-height: 1;
}

.about-story__quote p {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-primary);
}

/* ===== 关于我们：发展历程时间轴 ===== */
.about-timeline {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding-left: 0;
}

.about-timeline__item {
  position: relative;
  padding-left: 56px;
  padding-bottom: 40px;
}

.about-timeline__item:last-child {
  padding-bottom: 0;
}

.about-timeline__item::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 28px;
  bottom: 0;
  width: 1px;
  background: var(--border-gold);
}

.about-timeline__item:last-child::before {
  display: none;
}

.about-timeline__node {
  position: absolute;
  left: 3px;
  top: 6px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  border: 2px solid var(--gold);
  background: var(--bg-primary);
}

.about-timeline__node::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--gold);
}

.about-timeline__card {
  padding: 22px 28px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.about-timeline__card:hover {
  border-color: var(--border-gold);
  box-shadow: var(--shadow-gold);
  transform: translateX(4px);
}

.about-timeline__year {
  font-family: var(--font-en);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.06em;
}

.about-timeline__title {
  font-size: 1.08rem;
  font-weight: 600;
  margin: 4px 0 6px;
}

.about-timeline__desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* ===== 关于我们：品牌理念 ===== */
.about-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.about-value {
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}

.about-value:hover {
  transform: translateY(-6px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-lg);
}

.about-value__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--gold);
  background: var(--gold-glow);
  border: 1px solid var(--border-gold);
}

.about-value__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.about-value__desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 关于我们：制造工艺 ===== */
.about-craft {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.about-craft__step {
  position: relative;
  padding: 32px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.about-craft__step:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
}

.about-craft__num {
  font-family: var(--font-en);
  font-size: 2.2rem;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1px var(--gold);
  opacity: 0.7;
  line-height: 1;
}

.about-craft__title {
  font-size: 1.08rem;
  font-weight: 700;
  margin: 14px 0 10px;
}

.about-craft__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ===== 关于我们：模块显隐开关（about_page.modules 配置为 false 时整块隐藏） ===== */
.module-hidden {
  display: none !important;
}

/* ===== 关于我们：生产实录（图集） ===== */
.about-gallery__filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 0 0 32px;
}

.about-gallery__filter {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font: inherit;
  font-size: 0.92rem;
  font-weight: 500;
  padding: 8px 22px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition);
}

.about-gallery__filter:hover {
  border-color: var(--border-gold);
  color: var(--gold);
}

.about-gallery__filter.active {
  background: var(--gradient-gold);
  border-color: transparent;
  color: #fff;
  box-shadow: var(--shadow-gold);
}

.about-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.about-gallery__item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  cursor: zoom-in;
  transition: all var(--transition);
}

.about-gallery__item:hover {
  transform: translateY(-4px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-lg);
}

.about-gallery__item.hidden {
  display: none;
}

.about-gallery__img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-gallery__item:hover .about-gallery__img {
  transform: scale(1.05);
}

.about-gallery__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 34px 16px 12px;
  font-size: 0.92rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(180deg, transparent 0%, rgba(11, 15, 26, 0.72) 100%);
  pointer-events: none;
}

.about-gallery__tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #fff;
  background: rgba(11, 15, 26, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  backdrop-filter: blur(6px);
  pointer-events: none;
}

.about-gallery__empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-tertiary);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
}

/* 灯箱 */
.about-lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(7, 10, 18, 0.94);
  backdrop-filter: blur(8px);
  padding: 48px;
  animation: lbFade 0.25s ease;
}

.about-lightbox[hidden] {
  display: none;
}

.about-lightbox__stage {
  margin: 0;
  max-width: min(1080px, 92vw);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.about-lightbox__stage img {
  display: block;
  max-width: 100%;
  max-height: 78vh;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
  animation: lbZoom 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-lightbox__stage figcaption {
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.about-lightbox__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.about-lightbox__btn:hover {
  background: var(--gold);
  border-color: var(--gold);
}

.about-lightbox__btn--prev { left: 24px; }
.about-lightbox__btn--next { right: 24px; }

.about-lightbox__close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
  transition: all var(--transition);
}

.about-lightbox__close:hover {
  background: var(--gold);
  border-color: var(--gold);
}

.about-lightbox__counter {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.6);
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
}

@keyframes lbFade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes lbZoom {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

/* ===== 专利资质 ===== */
.cert-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  text-align: center;
}

.cert-stats__item {
  padding: 28px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.cert-stats__item:hover {
  border-color: var(--border-gold);
  box-shadow: var(--shadow-gold);
}

.cert-stats__num {
  font-size: 2.4rem;
  font-weight: 800;
  font-family: var(--font-en);
  color: var(--gold);
}

.cert-stats__label {
  margin-top: 4px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.cert-card {
  padding: 26px 22px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  text-align: center;
  position: relative;
  transition: all var(--transition);
}

.cert-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-gold);
}

.cert-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.cert-card__type {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--gold-glow);
  color: var(--gold);
  border: 1px solid var(--border-gold);
}

.cert-card__type--utility {
  background: rgba(59, 130, 246, 0.1);
  color: #3b82f6;
  border-color: rgba(59, 130, 246, 0.3);
}

.cert-card__year {
  font-family: var(--font-en);
  font-size: 0.82rem;
  color: var(--text-tertiary);
  font-weight: 600;
}

.cert-card__icon {
  color: var(--gold);
  margin-bottom: 14px;
}

.cert-card__name {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.5;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cert-card__no {
  margin-top: 6px;
  font-family: var(--font-en);
  font-size: 0.76rem;
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
  word-break: break-all;
}

.cert-card__status {
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.cert-card__status::before {
  content: '●';
  font-size: 0.6rem;
  margin-right: 6px;
  vertical-align: 1px;
}

.cert-note {
  margin-top: 28px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

.cert-quality {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.cert-quality__step {
  padding: 34px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  position: relative;
  transition: all var(--transition);
}

.cert-quality__step:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
}

.cert-quality__num {
  position: absolute;
  top: 22px;
  right: 26px;
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1px var(--border-gold);
}

.cert-quality__title {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 12px;
  padding-right: 52px;
}

.cert-quality__desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 光学科普 ===== */
.news-filter {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.news-filter__chip {
  padding: 8px 22px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.news-filter__chip:hover {
  border-color: var(--border-gold);
  color: var(--gold);
}

.news-filter__chip.active {
  background: var(--gradient-gold);
  border-color: transparent;
  color: #fff;
  font-weight: 600;
}

/* ===== 浏览方式工具条（网格 / 列表切换） ===== */
.news-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.news-toolbar__count {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.news-view-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  overflow: hidden;
  background: var(--bg-card);
}

.news-view-toggle__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: all var(--transition);
}

.news-view-toggle__btn:hover:not(.active) {
  color: var(--gold);
}

.news-view-toggle__btn.active {
  background: var(--gradient-gold);
  color: #fff;
}

/* ===== 列表模式 ===== */
.news-grid.news-grid--list {
  grid-template-columns: 1fr;
  gap: 0;
}

.news-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition);
}

.news-row:first-child {
  border-top: 1px solid var(--border);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.news-row:last-child {
  border-bottom: 1px solid var(--border);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.news-row:first-child:last-child {
  border-radius: var(--radius-lg);
}

.news-row:hover {
  background: var(--bg-secondary);
}

.news-row .news-card__tag {
  flex: 0 0 auto;
  padding: 2px 10px;
  white-space: nowrap;
}

.news-row__title {
  flex: 0 1 auto;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
}

.news-row__summary {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 0.78rem;
  color: var(--text-tertiary);
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-row__date,
.news-row__read {
  flex: 0 0 auto;
  font-size: 0.72rem;
  color: var(--text-tertiary);
  white-space: nowrap;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  display: flex;
  flex-direction: column;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}

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

.news-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.news-card__tag {
  font-size: 0.73rem;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  background: var(--gold-glow);
  color: var(--gold);
  border: 1px solid var(--border-gold);
}

.news-card__tag--knowledge {
  background: rgba(59, 130, 246, 0.08);
  color: #3b82f6;
  border-color: rgba(59, 130, 246, 0.25);
}

.news-card__tag--tips {
  background: rgba(16, 185, 129, 0.08);
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.25);
}

.news-card__date {
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.news-card__title {
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 12px;
}

.news-card__summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.75;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.news-card__read {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.news-card__more {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gold);
  transition: all var(--transition);
}

.news-card:hover .news-card__more {
  transform: translateX(4px);
}

.news-empty {
  text-align: center;
  padding: 48px 0;
  color: var(--text-tertiary);
}

/* ===== 文章详情（页面内展示） ===== */
.news-detail-section {
  padding-top: 40px;
  padding-bottom: 72px;
}

.news-detail {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 8px;
}

.news-detail__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 28px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition);
}

.news-detail__back:hover {
  color: var(--gold);
  border-color: var(--border-gold);
  background: var(--gold-glow);
}

.news-detail__tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  background: var(--gold-glow);
  color: var(--gold);
  border: 1px solid var(--border-gold);
  margin-bottom: 18px;
}

.news-detail__title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.news-detail__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-tertiary);
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.news-detail__content p {
  font-size: 1.04rem;
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 20px;
  text-align: justify;
}

.news-detail__content p:last-child {
  margin-bottom: 0;
}

/* ===== 联系我们 ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  align-items: start;
}

/* 桌面端：联系方式卡片双列排布，进一步压缩左栏高度 */
@media (min-width: 1025px) {
  .contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 10px;
    align-content: start;
  }
  .contact-info__title,
  .contact-info__desc,
  .contact-kf {
    grid-column: 1 / -1;
  }
  .contact-card {
    margin-bottom: 0;
  }
}

.contact-info__title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-info__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  margin-bottom: 6px;
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: var(--border-gold);
  transform: translateX(4px);
  box-shadow: var(--shadow-gold);
}

.contact-card--plain:hover {
  transform: none;
}

.contact-card__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--gold);
  background: var(--gold-glow);
  border: 1px solid var(--border-gold);
}

.contact-card__icon svg {
  width: 18px;
  height: 18px;
}

.contact-card__label {
  font-size: 0.72rem;
  color: var(--text-tertiary);
  margin-bottom: 1px;
}

.contact-card__value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ===== 企业微信客服卡片 ===== */
.contact-kf {
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  transition: all var(--transition);
}
.contact-kf:hover {
  box-shadow: var(--shadow-gold);
}
.contact-kf__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.contact-kf__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--gold);
  background: var(--gold-glow);
  border: 1px solid var(--border-gold);
}
.contact-kf__icon svg {
  width: 18px;
  height: 18px;
}
.contact-kf__title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1px;
}
.contact-kf__desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
}
.contact-kf__qr {
  display: block;
  width: 100%;
  padding: 0;
  border: none;
  background: transparent;
  cursor: zoom-in;
  position: relative;
}
.contact-kf__qr img {
  display: block;
  width: 100%;
  max-width: 120px;
  margin: 0 auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.contact-kf__zoom {
  position: absolute;
  right: 50%;
  bottom: 10px;
  transform: translateX(50%);
  font-size: 0.72rem;
  color: var(--text-tertiary);
  background: rgba(251, 250, 248, 0.92);
  border: 1px solid var(--border);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  pointer-events: none;
}
/* 企业微信人工客服直达按钮（配置 wecom_kf.url 后显示） */
.contact-kf__chat {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 10px;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #D4B87A, #B89548);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: all var(--transition);
}
.contact-kf__chat:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
  color: #fff;
}
.contact-kf__chat svg {
  flex-shrink: 0;
}
.contact-kf__chat-hint {
  margin: 8px 0 0;
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-tertiary);
}

/* 客服二维码放大模态 */
.kf-qr-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.kf-qr-modal.open {
  opacity: 1;
  pointer-events: auto;
}
.kf-qr-modal__panel {
  position: relative;
  max-width: min(420px, 90vw);
  max-height: 80vh;
  padding: 24px;
  border-radius: var(--radius-xl);
  background: var(--bg-primary);
  border: 1px solid var(--border-gold);
  box-shadow: var(--shadow-lg);
  transform: scale(0.96);
  transition: transform var(--transition);
}
.kf-qr-modal.open .kf-qr-modal__panel {
  transform: scale(1);
}
.kf-qr-modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  transition: all var(--transition);
}
.kf-qr-modal__close:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: rotate(90deg);
}
.kf-qr-modal__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}
.kf-qr-modal__caption {
  text-align: center;
  margin-top: 14px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.contact-form-wrap {
  padding: 18px 22px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.contact-form-wrap__title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-form-wrap__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.form {
  display: grid;
  gap: 12px;
}

.form__submit {
  justify-self: start;
  margin-top: 6px;
}

/* 表单底部按钮行：提交 + 在线客服直达 */
.form__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.form__actions .form__submit {
  margin-top: 0;
}
.form__kf-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.form__kf-link svg {
  flex-shrink: 0;
  color: var(--gold);
}

.contact-coop {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.contact-coop__card {
  padding: 34px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.contact-coop__card:hover {
  transform: translateY(-6px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-lg);
}

.contact-coop__icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--gold);
  background: var(--gold-glow);
  border: 1px solid var(--border-gold);
  margin-bottom: 20px;
}

.contact-coop__title {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.contact-coop__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 18px;
}

.contact-coop__link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gold);
}

.contact-coop__link:hover {
  text-decoration: underline;
}

/* ===== 应用场景页 ===== */
.app-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.app-nav__link {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.app-nav__link:hover {
  border-color: var(--border-gold);
  color: var(--gold);
}

.app-scenario {
  margin-bottom: 40px;
  border-radius: var(--radius-xl);
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
}

.app-scenario:hover {
  border-color: var(--border-gold);
  box-shadow: var(--shadow-md);
}

.app-scenario__head {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 30px 36px;
}

.app-scenario__icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.app-scenario__title {
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
}

.app-scenario__title-en {
  color: rgba(255, 255, 255, 0.65);
  font-family: var(--font-en);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 2px;
}

.app-scenario__body {
  padding: 28px 36px 34px;
}

.app-scenario__desc {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.9;
  max-width: 760px;
  margin-bottom: 22px;
}

.app-scenario__rec-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.app-scenario__recs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.app-product {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.app-product:hover {
  border-color: var(--border-gold);
  transform: translateY(-3px);
  box-shadow: var(--shadow-gold);
}

.app-product__img {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.app-product__name {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.4;
}

.app-product__specs {
  font-size: 0.78rem;
  color: var(--gold);
  margin-top: 2px;
}

/* ===== 应用场景页：博冠风格大卡片（4 列 · 3:4 竖图 · 悬停换图动效） ===== */
/* 场景分组容器：每组一个小节（组标题 + 卡片网格） */
.scene-groups {
  display: flex;
  flex-direction: column;
  gap: 44px;
}
.scene-group__head {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}
.scene-group__eyebrow {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
}
.scene-group__title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.scene-grid {
  /* flex 居中布局：不满一整行（如只有 2 张卡）时卡片居中，不靠左 */
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  /* 整体收窄居中：卡片更小巧秀气，接近博冠参考观感 */
  max-width: 1040px;
  margin: 0 auto;
}

/* 卡片基准宽度 = 原 4 列网格的列宽（(100% - 3*20px) / 4），不放大只允许收缩 */
.scene-grid .scene-card {
  flex: 0 1 calc(25% - 15px);
  min-width: 200px;
}

.scene-card {
  position: relative;
  display: block;
  aspect-ratio: 3 / 4;          /* 天猫主图竖图规格：宽:高 = 3:4，避免后期额外作图 */
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(135deg, #1a2235, #2a3548);
  text-decoration: none;
  transition: transform 0.45s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.45s ease;
}

.scene-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.18);
}

.scene-card__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: opacity 0.45s ease, transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* 悬停切换图：默认透明盖在底层图上方，悬停时淡入并与底层交叉切换 + 轻微位移，模拟博冠"换图微动"效果 */
.scene-card__bg--hover {
  opacity: 0;
  transform: scale(1.03) translateY(6px);
}

.scene-card:hover .scene-card__bg {
  opacity: 0;
  transform: scale(1.02) translateY(-4px);
}

.scene-card:hover .scene-card__bg--hover {
  opacity: 1;
  transform: scale(1.08) translateY(-4px);
}

.scene-card__overlay {
  position: absolute;
  inset: 0;
  /* 双层遮罩：底部线性渐变保证按钮/装备区可读；
     中上部径向暗角专门兜住 slogan + tags 文字区，避免复杂图片导致白字糊掉 */
  background:
    radial-gradient(
      ellipse 88% 58% at 50% 32%,
      rgba(0, 0, 0, 0.52) 0%,
      rgba(0, 0, 0, 0.24) 52%,
      transparent 82%
    ),
    linear-gradient(
      to top,
      rgba(0, 0, 0, 0.82) 0%,
      rgba(0, 0, 0, 0.42) 48%,
      rgba(0, 0, 0, 0.08) 100%
    );
  pointer-events: none;
}

.scene-card__content {
  position: absolute;
  left: 0;
  right: 0;
  top: 10%;
  /* 底部留足：tags（约 55px，bottom:132px）+ 装备区（约 75px，bottom:60px）+ 箭头（38px，bottom:22px）不与文字重叠 */
  bottom: 150px;
  padding: 18px;
  color: #fff;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: flex-start;
  overflow: hidden;
}

.scene-card__title {
  font-size: 1.4rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.06em;
  margin: 0;
  line-height: 1.25;
  /* 文字投影兜底：即使背景图偏亮也能看清标题 */
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.55), 0 1px 2px rgba(0, 0, 0, 0.4);
}

.scene-card__body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.scene-card__slogan {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.5;
  /* 加重 slogan 在复杂背景上的可读性 */
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.55), 0 1px 2px rgba(0, 0, 0, 0.4);
}

.scene-card__tags {
  position: absolute;
  left: 18px;
  right: 18px;
  /* 位于装备区（bottom:60px）上方，确保完整显示不再被截断 */
  bottom: 132px;
  z-index: 2;
  font-size: 0.9rem;
  font-weight: 500;
  color: #fff;
  letter-spacing: 0.06em;
  text-align: center;
  display: inline-block;
  max-width: 100%;
  line-height: 1.45;
  /* 深色半透明胶囊底条：无论背景图多亮多花，白字都清晰可读 */
  background: rgba(0, 0, 0, 0.38);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-full);
  padding: 5px 14px;
  /* 标签笔画细，加投影防止被背景吃掉 */
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.7), 0 1px 2px rgba(0, 0, 0, 0.55);
}

/* 推荐装备摘要：卡片上直接展示前 3 款产品名 + 总数。
   统一所有卡片的「推荐装备」标签位置：底部固定高度的两行结构，
   第一行标签，第二行产品名+总数；产品名区固定 2 行高，避免高度抖动。 */
.scene-card__equip {
  position: absolute;
  left: 18px;
  right: 18px;
  /* 位于底部箭头（bottom:22px + 38px 高）上方，不再互相遮挡 */
  bottom: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  font-size: 0.72rem;
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.85);
  /* 小字最容易被亮图吃掉，加投影兜底 */
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.65), 0 1px 6px rgba(0, 0, 0, 0.4);
}
.scene-card__equip-label {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold);
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(184, 149, 72, 0.55);
  border-radius: var(--radius-full);
  padding: 1px 8px;
}
.scene-card__equip-count {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(0, 0, 0, 0.32);
  border: 1px solid rgba(184, 149, 72, 0.55);
  border-radius: var(--radius-full);
  padding: 1px 8px;
}
.scene-card__equip-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: calc(2em * 1.45);
  max-height: calc(2em * 1.45);
  text-align: center;
  overflow: hidden;
}
.scene-card__equip-names {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.scene-card__arrow {
  position: absolute;
  left: 50%;
  bottom: 22px;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: #fff;
  background: transparent;
  transform: translateX(-50%);
  transition: all 0.35s ease;
  z-index: 2;
}

.scene-card:hover .scene-card__arrow {
  background: var(--gold);
  border-color: var(--gold);
  color: #fff;
  transform: rotate(-45deg);
}

/* 当前查看场景的卡片高亮（applications.html?sc=xxx） */
.scene-card.active {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ===== 场景详情视图（applications.html?sc=场景ID） ===== */
.app-detail {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
}
.app-detail__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color var(--transition);
}
.app-detail__back:hover {
  color: var(--gold);
}
.app-detail__eyebrow {
  margin-top: 12px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  color: var(--gold);
  text-transform: uppercase;
}
.app-detail__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.app-detail__title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
}
.app-detail__count {
  font-size: 0.85rem;
  color: var(--text-tertiary);
}
.app-detail__desc {
  margin-top: 12px;
  max-width: 760px;
  color: var(--text-secondary);
  line-height: 1.85;
}
.app-detail__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.app-detail__tag {
  padding: 3px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  color: var(--text-secondary);
  background: var(--bg-secondary, rgba(0, 0, 0, 0.02));
}
.app-detail__label {
  margin-top: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--gold);
}
.app-detail__grid {
  margin-top: 22px;
}
.app-detail__empty {
  padding: 28px 0;
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .app-detail {
    padding: 24px 18px;
  }
  .app-detail__title {
    font-size: 1.5rem;
  }
}

@media (max-width: 1100px) {
  .scene-grid .scene-card {
    flex-basis: calc(50% - 10px);
  }
}

@media (max-width: 640px) {
  .scene-grid {
    gap: 18px;
  }
  .scene-grid .scene-card {
    flex-basis: 100%;
    min-width: 0;
  }
  .scene-card__title {
    font-size: 1.4rem;
  }
}

/* ===== 资料下载页 ===== */
/* 资料语言分组标签（中文资料 / English Materials）——固定文案，不参与站点语言翻译 */
.dl-lang {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 22px;
}

.dl-lang__tab {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.dl-lang__tab:hover {
  border-color: var(--border-gold);
  color: var(--gold-dark);
}

.dl-lang__tab.active {
  border-color: var(--gold);
  background: var(--gold-glow);
  color: var(--gold-dark);
}

.dl-lang__tab-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border-radius: var(--radius-full);
  background: var(--border);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 700;
}

.dl-lang__tab.active .dl-lang__tab-count {
  background: var(--gold);
  color: #fff;
}

@media (max-width: 768px) {
  .dl-lang {
    gap: 8px;
  }
  .dl-lang__tab {
    padding: 10px 18px;
    font-size: 0.88rem;
  }
}

.dl-filter {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 28px;
}

.dl-list {
  display: grid;
  gap: 12px;
}

.dl-row {
  display: grid;
  grid-template-columns: 48px 1fr 90px 130px auto;
  align-items: center;
  gap: 20px;
  padding: 18px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.dl-row:hover {
  border-color: var(--border-gold);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

.dl-row__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.dl-row__icon--pdf {
  color: #dc2626;
  background: rgba(220, 38, 38, 0.08);
  border: 1px solid rgba(220, 38, 38, 0.2);
}

.dl-row__icon--exe {
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.dl-row__title {
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.45;
}

.dl-row__desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 3px;
  line-height: 1.5;
}

.dl-row__meta {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  margin-top: 2px;
}

.dl-row__version {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gold);
}

.dl-row__date {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

/* 行内操作按钮组：「查看」+「下载」并排（仅使用手册显示查看按钮） */
.dl-row__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.dl-row__btn--view {
  border-color: var(--border);
  color: var(--text-secondary);
}

.dl-row__btn--view:hover {
  border-color: var(--gold);
  color: var(--text-primary);
}

.dl-help {
  text-align: center;
  padding: 48px 40px;
  border-radius: var(--radius-xl);
  background: var(--gradient-card);
  border: 1px solid var(--border-gold);
}

.dl-help__title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.dl-help__desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.85;
  max-width: 640px;
  margin: 0 auto 24px;
}

/* ===== 子页面响应式 ===== */
@media (max-width: 992px) {
  .about-story {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .about-values, .cert-quality, .contact-coop {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
  }

  .about-craft, .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .dl-row {
    grid-template-columns: 48px 1fr auto;
    gap: 14px;
  }

  .dl-row__version, .dl-row__date {
    display: none;
  }
}

@media (max-width: 640px) {
  .page-hero {
    padding: calc(var(--header-height) + 60px) 0 50px;
  }

  .about-stats, .cert-stats, .about-craft, .cert-grid, .news-grid {
    grid-template-columns: 1fr;
  }

  .about-gallery {
    grid-template-columns: 1fr;
  }

  .about-lightbox {
    padding: 20px 12px;
  }

  .about-lightbox__btn--prev { left: 6px; }
  .about-lightbox__btn--next { right: 6px; }

  .about-lightbox__btn {
    width: 40px;
    height: 40px;
  }

  .about-lightbox__close {
    top: 12px;
    right: 12px;
    width: 38px;
    height: 38px;
  }

  /* 列表模式小屏：标签+阅读时长一行，标题换行占满 */
  .news-row {
    flex-wrap: wrap;
    gap: 8px 12px;
    padding: 12px 14px;
  }
  .news-row__summary,
  .news-row__date {
    display: none;
  }
  .news-row .news-card__tag {
    order: 0;
  }
  .news-row__read {
    order: 1;
    margin-left: auto;
  }
  .news-row__title {
    order: 2;
    flex: 1 1 100%;
    font-size: 0.9rem;
  }

  .about-cta, .dl-help {
    padding: 44px 24px;
  }

  .about-timeline__item {
    padding-left: 40px;
  }

  .app-scenario__head {
    padding: 22px 24px;
  }

  .app-scenario__body {
    padding: 22px 24px 26px;
  }

  .contact-form-wrap {
    padding: 20px 18px;
  }

  .news-detail {
    padding: 0;
  }

  .news-detail__back {
    margin-bottom: 22px;
  }

  .news-detail__meta {
    margin-bottom: 28px;
    padding-bottom: 18px;
  }

  .news-detail__content p {
    font-size: 1rem;
    line-height: 1.9;
    margin-bottom: 18px;
  }

  .dl-row {
    display: grid;
    grid-template-columns: 40px 1fr;
    grid-template-areas:
      "icon name"
      "actions actions";
    gap: 12px 14px;
    padding: 14px 16px;
  }

  .dl-row__icon {
    grid-area: icon;
    width: 40px;
    height: 40px;
  }

  .dl-row__name {
    grid-area: name;
    min-width: 0;
  }

  /* 小屏把操作按钮组放到单独一行，占满整宽并右对齐 */
  .dl-row__actions {
    grid-area: actions;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
    min-width: 0;
  }

  .dl-row__actions a {
    flex: 0 0 auto;
    min-width: 0;
  }

  .dl-row__btn {
    padding: 7px 13px;
    font-size: 0.8rem;
  }
}

/* ============================================================
   产品详情页（product.html）
   ============================================================ */

/* 详情页顶部：避开固定导航 + 面包屑呼吸空间（首屏紧凑：顶部留白收窄） */
.pd-hero {
  padding-top: calc(var(--header-height) + 28px);
  padding-bottom: 36px;
}

/* 面包屑 */
.pd-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 0.85rem;
  color: var(--text-tertiary);
}
.pd-breadcrumb__link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.25s;
}
.pd-breadcrumb__link:hover {
  color: var(--gold);
}
.pd-breadcrumb__sep {
  opacity: 0.5;
}
.pd-breadcrumb__current {
  color: var(--gold);
  font-weight: 500;
}

/* 主布局：左图右信息（桌面端左列 42%，主图高度受控，首屏不再被图片撑爆） */
.pd-layout {
  display: grid;
  grid-template-columns: minmax(0, 42%) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

/* 产品图区（主图统一 1:1 方图；任意尺寸自动缩放裁剪适配） */
.pd-gallery__main {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border-gold);
}
/* 主图真实图片：任意尺寸自动缩放裁剪成 1:1 方图 */
.pd-gallery__main-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.pd-gallery__thumbs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-top: 14px;
}
/* 桌面端主图 1:1 高度受限：宽屏不被 42% 列宽撑爆，保证首屏一屏可见（宽度随高度收缩、水平居中） */
@media (min-width: 993px) {
  .pd-gallery__main {
    max-height: clamp(340px, 58vh, 520px);
    max-width: 100%;
    margin-inline: auto;
  }
  /* 桌面端缩略图固定为小方块（避免跟着 42% 列宽变成大图），与主图一起水平居中 */
  .pd-gallery__thumbs {
    grid-template-columns: repeat(5, 64px);
    gap: 10px;
    margin-top: 12px;
    justify-content: center;
  }
}
.pd-gallery__thumb,
.pd-gallery__thumb-img {
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-sm);
  cursor: pointer;
  object-fit: cover;
  width: 100%;
  border: 1px solid var(--border-gold);
  transition: transform 0.25s, border-color 0.25s, opacity 0.25s;
}
.pd-gallery__thumb-img.active,
.pd-gallery__thumb.active {
  border-color: var(--gold);
  box-shadow: 0 0 0 1px var(--gold);
}
.pd-gallery__thumb:hover,
.pd-gallery__thumb-img:hover {
  transform: translateY(-2px);
  opacity: 1 !important;
}

/* ===== 产品视频模块（独立全宽区块；1~N 个视频自适应；无视频时整块隐藏） ===== */
.pd-videos {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-gold);
}
.pd-videos[hidden] {
  display: none;
}
.pd-videos__title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 0 0 24px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}
.pd-videos__title svg {
  color: var(--gold);
}
.pd-videos__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
}
/* 单个视频：大尺寸居中 */
.pd-videos__grid--single {
  grid-template-columns: 1fr;
  max-width: 960px;
}
/* 3 个及以上：保持 2 列网格，奇数个时最后一个自然换行左对齐，尺寸与上方一致 */
/* 统一视频框：所有视频（1:1 / 9:16 / 16:9 / 3:4）都放在同一个 16:9 框里，
   播放器 object-fit: contain 等比完整显示，不裁剪、不变形；深色底承载黑边 */
.pd-video {
  position: relative;
  margin: 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-gold);
  overflow: hidden;
  background: #10131c;
  aspect-ratio: 16 / 9;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.pd-video:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.pd-video__player {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  background: #10131c;
}
.pd-video__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 24px 16px 10px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.92);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.55));
  pointer-events: none;
}
/* 自定义全屏按钮：右上角常驻悬浮，hover 变金；原生 controls 的全屏按钮已隐藏 */
.pd-video__fs-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 8px;
  background: rgba(11, 15, 26, 0.72);
  color: #fff;
  cursor: pointer;
  opacity: 0.92;
  transition: opacity 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.pd-video__fs-btn:hover {
  opacity: 1;
  background: var(--gold);
  border-color: var(--gold);
  color: #10131c;
  transform: scale(1.05);
}
/* 全屏状态：figure 撑满屏幕，视频等比铺满，圆角与边框去掉 */
.pd-video:fullscreen,
.pd-video:-webkit-full-screen {
  aspect-ratio: auto;
  width: 100vw;
  height: 100vh;
  max-height: none;
  border-radius: 0;
  border: none;
  background: #000;
}
.pd-video:fullscreen .pd-video__player,
.pd-video:-webkit-full-screen .pd-video__player {
  object-fit: contain;
  background: #000;
}
[data-theme="dark"] .pd-videos {
  border-color: var(--border-gold);
}
[data-theme="dark"] .pd-video {
  background: #10131c;
  border-color: var(--border-gold);
}
@media (max-width: 860px) {
  .pd-videos__grid {
    gap: 16px;
  }
}
@media (max-width: 640px) {
  .pd-videos {
    margin-top: 36px;
    padding-top: 24px;
  }
  .pd-videos__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .pd-videos__grid:has(.pd-video:only-child) {
    grid-template-columns: 1fr;
  }
  .pd-video:only-child {
    max-width: 100%;
  }
  .pd-videos__title {
    font-size: 1.1rem;
    margin-bottom: 18px;
  }
}

/* 产品信息区 */
.pd-info__name-row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}
.pd-info__name {
  font-size: clamp(1.4rem, 2.2vw, 1.8rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
}
.pd-info__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pd-info__tag {
  padding: 4px 14px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #fff;
}
.pd-info__tag--new {
  background: var(--gold);
}
.pd-info__tag--hot {
  background: #B54A35;
}
/* 产品详情页：适用场景小标签（与 NEW/HOT 并列，可点击） */
.pd-info__tag--scene {
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}
.pd-info__tag--scene:hover {
  background: var(--gold);
  color: #fff;
}
.pd-info__desc {
  margin-top: 10px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.pd-info__highlights {
  list-style: none;
  margin-top: 14px;
  display: grid;
  gap: 8px;
}
.pd-info__highlight {
  position: relative;
  padding-left: 22px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.pd-info__highlight::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
}

/* ===== 产品详情页：配套软件下载卡（details.software 填写后显示） ===== */
.pd-software {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
}
.pd-software[hidden] {
  display: none;
}
.pd-software__icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--gold);
  background: var(--gold-glow);
  border: 1px solid var(--border-gold);
}
.pd-software__body {
  flex: 1;
  min-width: 0;
}
.pd-software__title {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
}
.pd-software__name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 2px;
}
.pd-software__meta {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  margin-top: 2px;
}
.pd-software__desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-top: 4px;
}
.pd-software__btn {
  flex-shrink: 0;
}
@media (max-width: 560px) {
  .pd-software {
    flex-wrap: wrap;
  }
  .pd-software__btn {
    width: 100%;
    text-align: center;
  }
}
/* ===== 产品详情页：规格 / 颜色选择器（多 SKU 或多颜色时显示） ===== */
.pd-sku {
  margin-top: 16px;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
/* 多维度（如同时有规格 + 颜色）时，每个维度一组，组间细分隔线 */
.pd-sku__group + .pd-sku__group {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
}
.pd-sku__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}
.pd-sku__title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
}
.pd-sku__current {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 600;
}
.pd-sku__options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.pd-sku__option {
  padding: 9px 24px;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--text-primary);
  font-size: 0.92rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.25s ease;
}
.pd-sku__option:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.pd-sku__option.active {
  border-color: var(--gold);
  background: var(--gold);
  color: #fff;
  box-shadow: 0 6px 16px rgba(184, 149, 72, 0.28);
}
[data-theme="dark"] .pd-sku__option.active {
  box-shadow: 0 6px 16px rgba(200, 169, 104, 0.3);
}
/* ===== 颜色选择：色块 + 名称按钮 ===== */
.pd-sku__option--color {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px 7px 9px;
}
.pd-sku__swatch {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.18);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.28);
}
[data-theme="dark"] .pd-sku__swatch {
  border-color: rgba(255, 255, 255, 0.25);
}
.pd-sku__option--color.active .pd-sku__swatch {
  box-shadow: 0 0 0 2px #fff, 0 0 0 3.5px var(--gold);
}
[data-theme="dark"] .pd-sku__option--color.active .pd-sku__swatch {
  box-shadow: 0 0 0 2px #1A1D29, 0 0 0 3.5px var(--gold);
}
@media (max-width: 640px) {
  .pd-sku__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}
.pd-info__quick {
  margin-top: 14px;
  padding: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
}
.pd-info__quick-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}
.pd-quick-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 18px;
}
.pd-quick-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--border-gold);
}
.pd-quick-item__label {
  color: var(--text-tertiary);
  font-size: 0.85rem;
}
.pd-quick-item__value {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  text-align: right;
}
.pd-info__actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.pd-info__actions .btn--lg {
  padding: 12px 26px;
  font-size: 1rem;
}

/* 加入对比按钮 */
.pd-compare-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
}
.pd-compare-btn__icon {
  display: inline-flex;
  color: var(--gold);
  transition: color var(--transition);
}
.pd-compare-btn:hover .pd-compare-btn__icon {
  color: var(--text-primary);
}
.pd-compare-btn--added {
  background: var(--gold-glow);
  border-color: var(--gold);
}
.pd-compare-btn--added .pd-compare-btn__icon {
  color: var(--gold);
}
.pd-compare-btn--added .pd-compare-btn__icon svg path {
  stroke-width: 3;
}

/* 未找到产品兜底 */
.pd-notfound {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 80px 20px;
  text-align: center;
}
.pd-notfound__text {
  color: var(--text-secondary);
}

/* 完整规格表（紧凑：小字号 + 窄行距，尽量一屏看完；不加滚动控制） */
.pd-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 32px;
}
/* 多 SKU 时渲染 table 对比表，需要独占整行并在容器内居中，因此覆盖双列 grid */
.pd-specs--multi {
  display: block;
  grid-template-columns: none;
}
.pd-specs__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  padding: 6px 2px;
  border-bottom: 1px solid var(--border-gold);
  line-height: 1.4;
}
.pd-specs__label {
  color: var(--text-tertiary);
  flex-shrink: 0;
  font-size: 0.8125rem;
}
.pd-specs__value {
  color: var(--text-primary);
  font-weight: 500;
  text-align: right;
  font-size: 0.875rem;
}

/* 多 SKU 规格对比表：与单 SKU 紧凑表同一视觉语言——无卡片区、无渐变表头、统一字号间距；
   保留多列并排 + 差异行高亮，差异徽标改为低调描边样式 */
.pd-specs-cmp-wrap {
  overflow-x: auto;
}
.pd-specs-cmp {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
}
.pd-specs-cmp th,
.pd-specs-cmp td {
  padding: 7px 14px;
  text-align: center;
  border-bottom: 1px solid var(--border-gold);
}
.pd-specs-cmp thead th {
  background: none;
  color: var(--text-tertiary);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.pd-specs-cmp tbody tr:last-child td {
  border-bottom: none;
}
.pd-specs-cmp__param {
  text-align: left;
  color: var(--text-tertiary);
  white-space: nowrap;
  font-size: 0.8125rem;
  font-weight: 500;
}
.pd-specs-cmp__val {
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
}
/* 差异行：浅金底 + 金色加粗值 */
.pd-specs-cmp__row--diff {
  background: rgba(200, 168, 100, 0.06);
}
.pd-specs-cmp__row--diff .pd-specs-cmp__param {
  color: var(--text-primary);
  font-weight: 600;
}
.pd-specs-cmp__row--diff .pd-specs-cmp__val {
  color: var(--gold-dark);
  font-weight: 600;
}
.pd-specs-cmp__badge {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 6px;
  font-size: 10px;
  line-height: 1.6;
  border-radius: 999px;
  border: 1px solid var(--gold-dark);
  color: var(--gold-dark);
  background: transparent;
  vertical-align: 1px;
}
[data-theme="dark"] .pd-specs-cmp__row--diff {
  background: rgba(200, 168, 100, 0.10);
}
[data-theme="dark"] .pd-specs-cmp__row--diff .pd-specs-cmp__val {
  color: var(--gold);
}

/* 产品特性卡 */
.pd-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pd-feature {
  padding: 28px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  text-align: center;
  transition: transform 0.3s, border-color 0.3s;
}
.pd-feature:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
}
.pd-feature__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  background: rgba(184, 149, 72, 0.12);
  border: 1px solid var(--border-gold);
}
.pd-feature__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.pd-feature__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 包装清单 */
.pd-package {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.pd-package__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.9rem;
}
.pd-package__item::before {
  content: '✓';
  color: var(--gold);
  font-weight: 700;
}

/* 同系列推荐 */
.pd-related {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

/* 详情页推荐卡片复用分类页纵向卡片，但尺寸更紧凑 */
.pd-related .pd-card-link,
.pd-related .cat-product-card {
  height: 100%;
  display: flex;
  flex-direction: column;
}
.pd-related .cat-product-card__img {
  aspect-ratio: 1 / 1;
}
.pd-related .cat-product-card__body {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.pd-related .cat-product-card__desc {
  /* 卖点/描述自然跟随规格，避免 specs 与 desc 之间出现“空行” */
}

/* 卡片链接包装：让全站产品卡可点击跳详情页 */
.pd-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  height: 100%;
}
.pd-card-link .product-card,
.pd-card-link .new-product-card,
.pd-card-link .best-seller-card,
.pd-card-link .cat-product-card {
  height: 100%;
}
.pd-card-link:hover .product-card,
.pd-card-link:hover .new-product-card,
.pd-card-link:hover .best-seller-card,
.pd-card-link:hover .cat-product-card {
  transform: translateY(-4px);
}

/* 详情页响应式 */
@media (max-width: 992px) {
  .pd-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .pd-specs {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .pd-features {
    grid-template-columns: 1fr 1fr;
  }
  .pd-related {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .pd-layout {
    gap: 24px;
  }
  .pd-quick-grid {
    grid-template-columns: 1fr;
  }
  .pd-features {
    grid-template-columns: 1fr;
  }
  .pd-related {
    grid-template-columns: 1fr;
  }
  .pd-info__actions {
    flex-direction: column;
  }
  .pd-info__actions .btn {
    width: 100%;
    text-align: center;
  }
}

/* 修正：新品网格中卡片外包了链接，链接成为 grid 子项 */
.new-arrivals__track .pd-card-link {
  min-width: 0;
}
.new-arrivals__track .pd-card-link .new-product-card {
  width: 100%;
}

/* ============================================================
   配件子分类（5 个子分类：可点击卡片 + 分组展示）
   ============================================================ */

/* 子分类卡片从静态 div 变为可点击 <a>：链接基础修正 */
.cat-subcat-card,
.subcategory-card {
  display: block;
  text-decoration: none;
  color: inherit;
}

/* 子分类计数徽标 */
.cat-subcat-card__count,
.subcategory-card__count {
  display: inline-block;
  margin-top: 10px;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--gold);
  background: rgba(184, 149, 72, 0.12);
  border: 1px solid var(--border-gold);
}

.cat-subcat-card__count {
  margin-top: 0;
  margin-left: 4px;
  padding: 2px 8px;
}

/* 产品中心：子分类卡片悬停微升起 */
.subcategory-card:hover {
  transform: translateY(-2px);
}

/* 分类页产品按子分类分组 */
.cat-products__grid .cat-group {
  grid-column: 1 / -1;
}
.cat-group {
  scroll-margin-top: 96px; /* 锚点滚动时避开固定导航 */
}
.cat-group__head {
  padding: 18px 0 6px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-gold);
}
.cat-group__title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.cat-group__name {
  position: relative;
  padding-left: 16px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}
.cat-group__name::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 1.05em;
  border-radius: 2px;
  background: var(--gold);
}
.cat-group__count {
  flex-shrink: 0;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gold);
  background: rgba(184, 149, 72, 0.12);
  border: 1px solid var(--border-gold);
  padding: 3px 12px;
  border-radius: var(--radius-full);
}
.cat-group__desc {
  margin-top: 8px;
  font-size: 0.88rem;
  color: var(--text-tertiary);
  line-height: 1.7;
}
.cat-group__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* 响应式：分组网格跟随产品网格断点 */
@media (max-width: 992px) {
  .cat-group__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .cat-group__grid {
    grid-template-columns: 1fr;
  }
  .cat-group__title-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

/* ===== 产品中心对比入口（compare entry） ===== */
.compare-entry {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px 48px;
  box-shadow: var(--shadow-sm);
}
.compare-entry__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 10px;
}
.compare-entry__title {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 8px;
}
.compare-entry__desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.compare-entry__btn {
  flex-shrink: 0;
}
@media (max-width: 768px) {
  .compare-entry {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px;
    gap: 24px;
  }
  .compare-entry__btn {
    width: 100%;
    text-align: center;
  }
}

/* ===== 悬浮对比条（全站底部固定，加入对比 ≥1 款时出现） ===== */
.compare-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 950; /* 低于导航/弹窗(1000)，高于页面其他元素 */
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--border-gold);
  box-shadow: 0 -10px 40px rgba(30, 27, 24, 0.18);
  animation: compareBarUp 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes compareBarUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}
.compare-bar__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.compare-bar__label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
  min-width: 64px;
}
.compare-bar__count {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}
.compare-bar__max {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-tertiary);
}
.compare-bar__label-text {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  white-space: nowrap;
}
.compare-bar__items {
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
  gap: 10px;
  flex-wrap: wrap;
}
.compare-bar__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 230px;
  padding: 7px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--cat-color, var(--gold));
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-primary);
}
.compare-bar__item--empty {
  max-width: 64px;
  min-width: 48px;
  justify-content: center;
  padding: 7px;
  border-left: 1px dashed var(--border);
  background: transparent;
}
.compare-bar__plus {
  color: var(--text-tertiary);
  font-size: 1rem;
  line-height: 1;
}
.compare-bar__name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.compare-bar__remove {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text-tertiary);
  font-size: 1.05rem;
  line-height: 1;
  cursor: pointer;
  transition: var(--transition);
}
.compare-bar__remove:hover {
  background: rgba(200, 60, 60, 0.12);
  color: #c0392b;
}
.compare-bar__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
  margin-left: auto;
}
.compare-bar__clear {
  border: none;
  background: transparent;
  padding: 4px 2px;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: var(--transition);
}
.compare-bar__clear:hover {
  color: var(--text-primary);
  text-decoration: underline;
}
.compare-bar__go {
  white-space: nowrap;
}
@media (max-width: 768px) {
  .compare-bar__inner {
    padding: 10px 16px;
    gap: 12px;
    flex-wrap: wrap;
  }
  .compare-bar__label {
    flex-direction: row;
    gap: 6px;
    align-items: baseline;
    min-width: auto;
  }
  .compare-bar__label-text { display: none; }
  .compare-bar__count { font-size: 1.2rem; }
  .compare-bar__items { flex-basis: 100%; order: 3; }
  .compare-bar__item { max-width: 100%; flex: 1 1 calc(50% - 5px); }
  .compare-bar__item--empty { display: none; }
  .compare-bar__actions { margin-left: auto; gap: 10px; }
}

/* ===== 产品对比页（comparison.html） ===== */
/* 对比页专属紧凑布局：压缩导航与面包屑，把最大垂直空间留给参数表 */
body[data-page="comparison"] {
  --header-height: 56px;
}
body[data-page="comparison"] .header {
  height: var(--header-height);
}
body[data-page="comparison"] .breadcrumb {
  padding-top: calc(var(--header-height) + 8px);
  padding-bottom: 8px;
}
body[data-page="comparison"] .breadcrumb__inner {
  font-size: 0.78rem;
}

.compare-selectors {
  margin-top: 4px;
  margin-bottom: 0;
  position: sticky;
  top: var(--header-height);
  z-index: 20;
  background: var(--bg-primary);
  height: 44px;
}
.compare-selectors.is-stuck {
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}
/* 内部滚动层：让选择器行整体能 sticky 在导航下方，同时支持横向滑动 */
.compare-selectors__scroll {
  padding: 0 16px;
  height: 44px;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.compare-selectors__scroll::-webkit-scrollbar {
  display: none;
}
#compareDropdownPortal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 0;
  z-index: 101;
  pointer-events: none;
}
#compareDropdownPortal .compare-selector__dropdown--portal {
  position: fixed;
  pointer-events: auto;
  top: 0;
  left: 0;
  max-height: min(520px, calc(100vh - 120px));
  overflow: auto;
  overscroll-behavior: contain;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}
.compare-selectors__grid {
  display: grid;
  grid-template-columns: minmax(140px, 1fr) repeat(4, 1fr);
  gap: 0;
  align-items: center;
  height: 44px;
  min-width: 900px;
}
.compare-selectors__title-cell {
  display: flex;
  align-items: center;
  padding: 0 16px 0 4px;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  text-align: left;
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--border);
}
.compare-selectors__title-cell span {
  display: inline-block;
}
.compare-selector {
  position: relative;
  z-index: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0;
  border-right: none;
  transition: border-color var(--transition), box-shadow var(--transition), z-index 0s;
}
.compare-selector.is-open,
.compare-selector:has(.compare-selector__btn[aria-expanded="true"]) {
  z-index: 100;
}
.compare-selector:nth-child(2) {
  border-radius: var(--radius-lg) 0 0 0;
}
.compare-selector:last-child {
  border-right: 1px solid var(--border);
  border-radius: 0 var(--radius-lg) 0 0;
}
.compare-selector:hover {
  border-color: var(--border-gold);
}
.compare-selector__btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 12px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-primary);
  text-align: left;
}
.compare-selector__label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
/* 选择器序号徽标：与下方表头列序号一一对应 */
.compare-selector__idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 17px;
  height: 17px;
  padding: 0 3px;
  margin-right: 6px;
  font-size: 0.62rem;
  font-weight: 800;
  line-height: 1;
  color: #fff;
  background: var(--gold);
  border-radius: var(--radius-full);
  vertical-align: middle;
}
.compare-selector__arrow {
  flex-shrink: 0;
  color: var(--text-tertiary);
  transition: transform var(--transition);
}
.compare-selector__btn[aria-expanded="true"] .compare-selector__arrow {
  transform: rotate(180deg);
}
.compare-selector__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  z-index: 101;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 380px;
  overflow: auto;
}
.compare-selector__dropdown--template {
  /* 仅作为数据模板，始终隐藏 */
  display: none !important;
}
.compare-selector__dropdown-inner {
  padding: 6px;
}
.compare-selector__group {
  padding-bottom: 4px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--border);
}
.compare-selector__group:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.compare-selector__group-title {
  display: block;
  padding: 4px 8px;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.compare-selector__option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 6px 8px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}
.compare-selector__option:hover {
  background: var(--gold-glow);
  color: var(--text-primary);
}
.compare-selector__option--active {
  background: rgba(184, 149, 72, 0.15);
  color: var(--gold);
  font-weight: 600;
}
/* SKU 子选项：缩进 + 小字号 + SKU 徽标，层级低于产品名 */
.compare-selector__option--sku {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px 4px 22px;
  font-size: 0.76rem;
  font-weight: 600;
}
.compare-selector__sku-tag {
  flex: 0 0 auto;
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--gold);
  background: rgba(184, 149, 72, 0.12);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-full);
  padding: 0 5px;
}

.compare-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-tertiary);
  font-size: 1rem;
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
}

.compare-table-wrap {
  /* 表格随页面自然滚动，不启用内部滚动条，避免表头与内容错位 */
  margin-top: 0;
  border: 1px solid var(--border);
  border-top: none;
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  overflow: clip;
}
.compare-table {
  min-width: 660px;
}
.compare-table__header,
.compare-table__row {
  display: grid;
  align-items: stretch;
}
/* 吸顶表头：双态布局 —— 默认态横向紧凑，滚动吸顶后只保留名称+分类，避免遮挡参数行 */
.compare-table__header {
  position: sticky;
  top: calc(var(--header-height) + 44px);
  z-index: 5;
  background: var(--bg-primary); /* 不透明，避免 sticky 时透出下方表格文字 */
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0; /* 与外框圆角对齐，避免顶部出现“缺口” */
  overflow: hidden;
  transition: padding var(--transition), box-shadow var(--transition);
}
.compare-table__header.is-stuck {
  padding: 6px 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}
.compare-table__corner {
  min-width: 120px;
}
.compare-table__col-head {
  padding: 0 8px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
}
.compare-table__col-head--empty {
  min-height: 0;
}

/* 默认态：表头显示「序号 + 产品名 + 分类」，与上方选择器一一对应 */
.compare-table__head-normal {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  gap: 3px;
}
.compare-table__name {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  display: block;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
  min-height: 2.7em;
}
.compare-table__idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 17px;
  height: 17px;
  padding: 0 3px;
  margin-right: 5px;
  font-size: 0.62rem;
  font-weight: 800;
  line-height: 1;
  color: #fff;
  background: var(--gold);
  border-radius: var(--radius-full);
  vertical-align: middle;
}
.compare-table__meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  min-width: 0;
}
.compare-table__category {
  flex: 0 1 auto;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--gold);
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.compare-table__detail {
  flex: 0 0 auto;
  padding: 2px 8px;
  font-size: 0.64rem;
  white-space: nowrap;
}

/* 吸顶态：保留产品名 + 查看详情按钮，居中显示，方便客户随时点进产品详情 */
.compare-table__head-sticky {
  display: none;
  text-align: center;
}
.compare-table__header.is-stuck .compare-table__head-normal {
  display: none;
}
.compare-table__header.is-stuck .compare-table__head-sticky {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
}
.compare-table__header.is-stuck .compare-table__name {
  font-size: 0.7rem;
  -webkit-line-clamp: 1;
  text-align: center;
}

.compare-table__section {
  border-bottom: 1px solid var(--border);
}
.compare-table__section:last-child {
  border-bottom: none;
}
.compare-table__section-title {
  padding: 4px 12px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold);
  text-transform: uppercase;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}
.compare-table__row {
  padding: 4px 12px;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.compare-table__row:last-child {
  border-bottom: none;
}
.compare-table__label {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 120px;
}
.compare-table__value {
  font-size: 0.86rem;
  color: var(--text-primary);
  padding: 0 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.25;
}
.compare-table__row--diff {
  background: rgba(184, 149, 72, 0.06);
}
.compare-table__row--diff .compare-table__value {
  font-weight: 600;
}
.compare-table__badge {
  flex-shrink: 0;
  font-size: 0.64rem;
  font-weight: 700;
  color: var(--gold);
  background: rgba(184, 149, 72, 0.12);
  border: 1px solid var(--border-gold);
  padding: 1px 5px;
  border-radius: var(--radius-full);
}

/* 一屏显示不全时自动进入的密集模式：进一步压缩行高/表头 */
.compare-table-wrap--dense .compare-table__header {
  padding: 6px 12px;
}
.compare-table-wrap--dense .compare-table__head-normal {
  gap: 2px;
}
.compare-table-wrap--dense .compare-table__meta {
  margin-top: 0;
}
.compare-table-wrap--dense .compare-table__category {
  font-size: 0.64rem;
}
.compare-table-wrap--dense .compare-table__detail {
  display: none;
}
.compare-table-wrap--dense .compare-table__section-title {
  padding: 2px 12px;
  font-size: 0.64rem;
}
.compare-table-wrap--dense .compare-table__row {
  padding: 3px 12px;
}
.compare-table-wrap--dense .compare-table__label {
  font-size: 0.74rem;
  min-width: 100px;
}
.compare-table-wrap--dense .compare-table__value {
  font-size: 0.76rem;
  padding: 0 8px;
  line-height: 1.15;
}
.compare-table-wrap--dense .compare-table__badge {
  font-size: 0.6rem;
  padding: 1px 4px;
}

@media (max-width: 992px) {
  .compare-selectors {
    height: auto;
    padding: 12px 0;
  }
  .compare-selectors__scroll {
    height: auto;
    overflow-x: hidden;
    overflow-y: visible;
    padding: 0;
  }
  .compare-selectors__grid {
    grid-template-columns: 1fr;
    gap: 10px;
    min-width: auto;
    height: auto;
  }
  .compare-selectors__title-cell {
    display: none;
  }
  .compare-selector,
  .compare-selector:nth-child(2),
  .compare-selector:last-child {
    border-radius: var(--radius-md);
    border-right: 1px solid var(--border);
  }
  .compare-selector__dropdown {
    position: static;
    box-shadow: var(--shadow-md);
    margin-top: 8px;
  }
  /* 移动端表格改为横向滚动，避免列被压缩/截断 */
  .compare-table-wrap {
    overflow-x: auto;
    overflow-y: visible;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    border-radius: var(--radius-md);
  }
  .compare-table-wrap::-webkit-scrollbar {
    height: 6px;
  }
  .compare-table-wrap::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
  }
  .compare-table-wrap::-webkit-scrollbar-thumb {
    background: var(--gold);
    border-radius: var(--radius-full);
  }
  .compare-table {
    min-width: 700px;
  }
  .compare-table__header {
    position: static;
    top: auto;
  }
  .compare-table__corner,
  .compare-table__label {
    min-width: 100px;
  }
  .compare-table__value {
    min-width: 140px;
  }
  .compare-mobile-scroll-hint {
    display: block;
    padding: 8px 12px;
    margin: 8px 0 4px;
    font-size: 0.75rem;
    color: var(--gold);
    text-align: center;
    background: var(--bg-card);
    border: 1px dashed var(--border-gold);
    border-radius: var(--radius-md);
  }
}
@media (max-width: 640px) {
  .compare-table__header,
  .compare-table__row {
    padding: 6px 10px;
  }
  .compare-table__head-normal {
    gap: 2px;
  }
  .compare-table__name {
    font-size: 0.74rem;
    min-height: 2.5em;
    line-height: 1.32;
  }
  .compare-table__category {
    font-size: 0.64rem;
  }
  .compare-table__detail {
    display: none;
  }
  .compare-table__value {
    font-size: 0.78rem;
    padding: 0 6px;
  }
  .compare-table__section-title {
    padding: 4px 10px;
  }
}

/* ===== 企业微信人工客服：全站悬浮入口（配置 wecom_kf.url 后由 JS 注入） ===== */
/* 用户反馈该悬浮入口影响浏览，现全站隐藏；后续如需恢复，删除下方 display:none 即可。 */
.kf-float { display: none !important; }

.kf-float {
  position: fixed;
  right: 22px;
  bottom: 40px;
  z-index: 960; /* 高于悬浮对比条(950)，低于导航/弹窗(1000) */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #D4B87A, #B89548);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  text-decoration: none;
  box-shadow: 0 6px 22px rgba(184, 149, 72, 0.4);
  transition: transform var(--transition), box-shadow var(--transition);
  animation: kfFloatIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.kf-float:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 34px rgba(184, 149, 72, 0.55);
  color: #fff;
}
.kf-float__icon {
  position: relative;
  display: flex;
  flex-shrink: 0;
}
.kf-float__dot {
  position: absolute;
  top: -1px;
  right: -3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4CD964;
  border: 1.5px solid #fff;
  animation: kfPulse 1.8s ease-out infinite;
}
/* 底部出现悬浮对比条时自动抬高，避免遮挡 */
body:has(.compare-bar) .kf-float {
  bottom: 112px;
}
@keyframes kfFloatIn {
  from { opacity: 0; transform: translateY(16px) scale(0.9); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes kfPulse {
  0% { box-shadow: 0 0 0 0 rgba(76, 217, 100, 0.55); }
  70% { box-shadow: 0 0 0 7px rgba(76, 217, 100, 0); }
  100% { box-shadow: 0 0 0 0 rgba(76, 217, 100, 0); }
}
/* 手机端隐藏全站悬浮「在线咨询」入口（用户要求，避免遮挡浏览；PC 端保留） */
@media (max-width: 768px) {
  .kf-float { display: none; }
}
@media (max-width: 640px) {
  .kf-float {
    right: 14px;
    bottom: 28px;
    padding: 11px 15px;
    font-size: 0.84rem;
  }
  body:has(.compare-bar) .kf-float {
    bottom: 122px;
  }
}

/* ===== file:// 直开提示条（源 HTML 需本地预览或自包含版） ===== */
.file-mode-notice {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 970;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: #FDF6E9;
  border-bottom: 1px solid rgba(184, 149, 72, 0.4);
  color: #6B4F1D;
  font-size: 0.88rem;
  line-height: 1.5;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}
[data-theme="dark"] .file-mode-notice {
  background: #332C1C;
  border-bottom: 1px solid rgba(200, 169, 104, 0.35);
  color: #E8D9B0;
}
.file-mode-notice__icon {
  font-size: 1rem;
  flex: none;
}
.file-mode-notice__txt {
  flex: 1;
}
.file-mode-notice__close {
  flex: none;
  background: none;
  border: none;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  color: inherit;
  opacity: 0.7;
  padding: 2px 4px;
}
.file-mode-notice__close:hover {
  opacity: 1;
}