/**
 * PowderPro — 粉末涂料企业站主题
 * 深灰科技 + 科技蓝 + 橙色点缀
 * 精密工业美学，暗色主题
 * 纯原生 CSS，无框架依赖
 * 依赖: Font Awesome 6, Swiper 11, AOS 2.3.4
 */


/* ============================================================
   CSS 变量体系 — 精密工业
   ============================================================ */
:root {
  /* 基底色 — 深灰工业 */
  --bg-deep: #0D1117;
  --bg-panel: #161B22;
  --bg-elevated: #1C2333;
  --bg-card: #161B22;
  --bg-card-hover: #1E2636;
  --bg-input: rgba(255,255,255,0.04);

  /* 科技蓝系 */
  --blue: #1A6BB0;
  --blue-light: #2196F3;
  --blue-dark: #0D4A7A;
  --blue-dim: rgba(26,107,176,0.15);
  --blue-glow: rgba(26,107,176,0.3);

  /* 橙色点缀 */
  --orange: #F57C00;
  --orange-light: #FF9800;
  --orange-dim: rgba(245,124,0,0.15);

  /* 文字色阶 */
  --text-primary: #E6EDF3;
  --text-secondary: #8B949E;
  --text-muted: #484F58;

  /* 边框 */
  --border: #30363D;
  --border-light: rgba(255,255,255,0.08);
  --border-blue: rgba(26,107,176,0.35);

  /* 阴影 */
  --shadow-card: 0 2px 12px rgba(0,0,0,0.3);
  --shadow-elevated: 0 4px 24px rgba(0,0,0,0.5);
  --shadow-blue: 0 0 20px rgba(26,107,176,0.12);

  /* 圆角 — 精密小圆角 */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 10px;

  /* 间距 */
  --section-py: 88px;
  --container-max: 1240px;
  --header-h: 68px;

  /* 过渡 */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --fast: 150ms;
  --normal: 280ms;
  --slow: 500ms;

  /* 字体 — 现代工业风格 */
  --font-heading: 'Inter','Microsoft YaHei UI','PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;
  --font-body: 'Inter','Microsoft YaHei UI','PingFang SC','Segoe UI','Helvetica Neue',-apple-system,BlinkMacSystemFont,sans-serif;
  --font-mono: 'JetBrains Mono','SF Mono','Fira Code','Cascadia Code','Consolas',monospace;
}

/* ============================================================
   全局重置
   ============================================================ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg-deep);
  color:var(--text-secondary);
  font-family:var(--font-body);
  font-size:15px;
  line-height:1.75;
  letter-spacing:0.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body::before{
  content:'';position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(ellipse 70% 50% at 30% 5%,rgba(26,107,176,0.04) 0%,transparent 55%),
    radial-gradient(ellipse 50% 40% at 70% 15%,rgba(26,107,176,0.03) 0%,transparent 50%),
    linear-gradient(180deg,#0D1117 0%,#111820 40%,#0F141B 100%);
}
::selection{background:rgba(26,107,176,0.3);color:#fff}
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:var(--bg-deep)}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.12);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,0.2)}

a{color:inherit;text-decoration:none;transition:color var(--fast) var(--ease)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
input,textarea,select,button{font-family:inherit;font-size:inherit}
input::placeholder,textarea::placeholder{color:var(--text-muted);opacity:1}

/* ============================================================
   排版
   ============================================================ */
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-heading);
  color:var(--text-primary);
  font-weight:600;
  line-height:1.35;
  letter-spacing:0.02em;
}
.section-tag{
  display:inline-block;
  font-size:0.72rem;
  font-weight:600;
  letter-spacing:0.2em;
  text-transform:uppercase;
  color:var(--blue);
  margin-bottom:0.6rem;
  padding:3px 12px;
  border:1px solid var(--border-blue);
  border-radius:2px;
  background:var(--blue-dim);
}
.section-tag--orange{
  color:var(--orange);
  border-color:rgba(245,124,0,0.35);
  background:var(--orange-dim);
}
.section-title{
  font-size:clamp(1.6rem,3.5vw,2.4rem);
  font-weight:700;
  color:var(--text-primary);
  margin-bottom:0.5rem;
  letter-spacing:0.03em;
}
.section-subtitle{
  font-size:1rem;
  color:var(--text-secondary);
  max-width:560px;
  line-height:1.7;
}

/* 区块标题组 — 统一间距，便于移动端整体收紧 */
.section-head{margin-bottom:40px}
.section-head--center{text-align:center}
.section-head--center .section-subtitle{margin:0 auto}
.section-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;
  flex-wrap:wrap;gap:14px;
}
.section-head--sm{margin-bottom:28px}
.section-head--xs{margin-bottom:16px}

/* 网格下方的居中按钮行 */
.grid-cta{text-align:center;margin-top:32px}

/* ============================================================
   布局容器
   ============================================================ */
.container{
  width:100%;
  max-width:var(--container-max);
  margin:0 auto;
  padding:0 28px;
}
.section{padding:var(--section-py) 0}

/* ============================================================
   Header — 深色固定
   ============================================================ */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--header-h);
  background:rgba(13,17,23,0.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  transition:all var(--normal) var(--ease);
}
.header.scrolled{
  background:rgba(13,17,23,0.98);
  box-shadow:0 1px 20px rgba(0,0,0,0.4);
}
.header__inner{
  display:flex;align-items:center;height:100%;
  max-width:var(--container-max);margin:0 auto;padding:0 28px;
}

/* Logo */
.header__logo{
  display:flex;align-items:center;gap:10px;flex-shrink:0;margin-right:auto;
}
.header__logo-icon{
  width:38px;height:38px;
  background:linear-gradient(135deg,var(--blue),var(--blue-light));
  border-radius:var(--radius-xs);
  display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;color:#fff;font-weight:700;
}
.header__logo-text{display:flex;flex-direction:column;line-height:1.2}
.header__logo-name{
  font-family:var(--font-heading);font-size:1.05rem;font-weight:700;
  color:var(--text-primary);letter-spacing:-0.01em;
}
.header__logo-sub{
  font-size:0.58rem;letter-spacing:0.16em;text-transform:uppercase;color:var(--blue-light);
}

/* 主导航 */
.header__nav{display:flex;align-items:center;gap:1px}
.header__nav-link{
  padding:8px 15px;font-size:0.88rem;color:var(--text-secondary);
  border-radius:var(--radius-sm);transition:all var(--fast) var(--ease);
  white-space:nowrap;font-weight:500;
}
.header__nav-link:hover,.header__nav-link.active{
  color:var(--text-primary);background:rgba(255,255,255,0.04);
}
.header__nav-item{position:relative}
.header__nav-item:hover .header__dropdown{
  opacity:1;visibility:visible;transform:translateY(0);
}
.header__dropdown{
  position:absolute;top:100%;left:0;min-width:170px;
  padding:8px 0;background:rgba(22,27,34,0.98);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid var(--border);border-radius:var(--radius-md);
  box-shadow:var(--shadow-elevated);
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:all var(--normal) var(--ease);z-index:60;
}
.header__dropdown a{
  display:block;padding:10px 20px;font-size:0.85rem;
  color:var(--text-secondary);transition:all var(--fast) var(--ease);
}
.header__dropdown a:hover{color:var(--text-primary);background:rgba(255,255,255,0.04)}

/* 右侧操作区 */
.header__actions{display:flex;align-items:center;gap:10px;margin-left:18px}
.header__cta{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 20px;background:var(--orange);
  color:#fff;font-size:0.84rem;font-weight:600;
  border-radius:var(--radius-xs);transition:all var(--fast) var(--ease);
}
.header__cta:hover{color:#fff;background:var(--orange-light);box-shadow:0 0 16px rgba(245,124,0,0.25)}

/* ============================================================
   汉堡菜单
   ============================================================ */
.hamburger{
  display:none;width:44px;height:44px;min-width:44px;min-height:44px;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;
  background:none;border:none;cursor:pointer;z-index:110;margin-left:8px;position:relative;
}
.hamburger span{
  display:block;width:22px;height:2px;
  background:var(--text-primary);border-radius:1px;
  transition:all var(--normal) var(--ease);pointer-events:none;
}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0;transform:scaleX(0)}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* 移动端侧滑菜单 */
.mobile-nav{
  position:fixed;top:0;left:0;bottom:0;width:80%;max-width:340px;
  background:rgba(22,27,34,0.99);backdrop-filter:blur(30px);
  -webkit-backdrop-filter:blur(30px);z-index:120;
  transform:translateX(-100%);transition:transform var(--normal) var(--ease);
  overflow-y:auto;
}
.mobile-nav.open{transform:translateX(0)}
.mobile-nav__inner{padding:24px;padding-top:80px}
.mobile-nav__link{
  display:block;padding:14px 16px;font-size:0.98rem;color:var(--text-secondary);
  border-radius:var(--radius-sm);transition:all var(--fast);
}
.mobile-nav__link:hover{color:var(--text-primary);background:rgba(255,255,255,0.03)}
.mobile-nav__sub{padding-left:16px;display:none}
.mobile-nav__sub.open{display:block}
.mobile-nav__sub a{
  display:block;padding:10px 16px;font-size:0.88rem;
  color:var(--text-muted);border-radius:var(--radius-sm);
}
.mobile-nav__overlay{
  position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:115;
  opacity:0;pointer-events:none;transition:opacity var(--normal) var(--ease);
}
.mobile-nav__overlay.show{opacity:1;pointer-events:auto}

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner{
  position:relative;height:320px;overflow:hidden;background:var(--bg-deep);
}
.inner-banner__bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
}
.inner-banner__overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,17,23,0.75) 0%,rgba(13,17,23,0.5) 50%,var(--bg-deep) 100%);
}
.inner-banner__content{
  position:relative;height:100%;display:flex;flex-direction:column;
  justify-content:center;max-width:var(--container-max);margin:0 auto;padding:0 28px;
}
.inner-banner__title{
  font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;color:#fff;margin-bottom:0.5rem;
}
.inner-banner__subtitle{font-size:1.05rem;color:var(--text-secondary)}

/* 面包屑 */
.breadcrumb-bar{
  background:var(--bg-panel);border-bottom:1px solid var(--border);
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  max-width:var(--container-max);margin:0 auto;
  padding:13px 28px;font-size:0.84rem;color:var(--text-muted);
}
.breadcrumb a{color:var(--text-secondary);transition:color var(--fast)}
.breadcrumb a:hover{color:var(--blue-light)}

/* ============================================================
   按钮系统
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 26px;font-size:0.9rem;font-weight:600;
  border-radius:var(--radius-xs);border:none;cursor:pointer;
  transition:all var(--normal) var(--ease);white-space:nowrap;
}
.btn--primary{
  background:linear-gradient(135deg,var(--blue),var(--blue-light));
  color:#fff;
}
.btn--primary:hover{
  box-shadow:var(--shadow-blue);transform:translateY(-1px);color:#fff;
}
.btn--outline{
  background:transparent;color:var(--text-primary);
  border:1px solid var(--border-blue);
}
.btn--outline:hover{
  border-color:var(--blue-light);background:var(--blue-dim);
  color:var(--text-primary);transform:translateY(-1px);
}
.btn--orange{
  background:linear-gradient(135deg,var(--orange),var(--orange-light));
  color:#fff;
}
.btn--orange:hover{box-shadow:0 0 20px rgba(245,124,0,0.3);transform:translateY(-1px);color:#fff}
.btn--ghost{
  background:rgba(255,255,255,0.03);color:var(--text-secondary);
  border:1px solid var(--border-light);
}
.btn--ghost:hover{
  background:rgba(255,255,255,0.06);color:var(--text-primary);
}

/* ============================================================
   卡片系统 — 深色+蓝色边框
   ============================================================ */
.card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-md);overflow:hidden;
  transition:all var(--normal) var(--ease);
}
.card:hover{
  background:var(--bg-card-hover);border-color:var(--border-blue);
  box-shadow:var(--shadow-card),var(--shadow-blue);transform:translateY(-2px);
}
.card__image{position:relative;overflow:hidden;aspect-ratio:16/10}
.card__image img{
  width:100%;height:100%;object-fit:cover;
  transition:transform var(--slow) var(--ease);
}
.card:hover .card__image img{transform:scale(1.05)}
.card__body{padding:20px}
.card__tag{
  display:inline-block;padding:2px 10px;font-size:0.7rem;font-weight:600;
  color:var(--blue-light);background:var(--blue-dim);border-radius:2px;margin-bottom:8px;
}
.card__title{
  font-family:var(--font-heading);font-size:1.05rem;font-weight:600;
  color:var(--text-primary);margin-bottom:6px;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.card__desc{
  font-size:0.88rem;color:var(--text-secondary);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__meta{
  display:flex;align-items:center;gap:16px;margin-top:12px;padding-top:12px;
  border-top:1px solid var(--border);font-size:0.8rem;color:var(--text-muted);
}
.card__meta i{color:var(--blue-light)}

/* ============================================================
   Hero Banner — 全屏工业风
   ============================================================ */
.hero{
  position:relative;height:100vh;min-height:620px;overflow:hidden;
}
.hero .swiper{position:absolute;inset:0;z-index:0}
.hero__slide{
  position:absolute;inset:0;background-size:cover;background-position:center;
}
.hero__overlay{
  position:absolute;inset:0;z-index:2;
  background:linear-gradient(180deg,rgba(13,17,23,0.25) 0%,rgba(13,17,23,0.1) 40%,rgba(13,17,23,0.9) 100%);
}
.hero__overlay::after{
  content:'';position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(26,107,176,0.08) 0%,transparent 50%,rgba(26,107,176,0.04) 100%);
}
.hero__content{
  position:relative;z-index:3;height:100%;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding-bottom:110px;max-width:var(--container-max);
  margin:0 auto;padding-left:28px;padding-right:28px;
}
.hero__title{
  font-family:var(--font-heading);
  font-size:clamp(2rem,5.5vw,3.6rem);font-weight:700;color:#fff;
  line-height:1.15;margin-bottom:1rem;
  text-shadow:0 2px 30px rgba(0,0,0,0.6);
}
.hero__title span{color:var(--blue-light)}
.hero__subtitle{
  font-size:clamp(1rem,2vw,1.2rem);
  color:rgba(255,255,255,0.7);margin-bottom:2rem;font-weight:300;
  max-width:600px;
}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap}
.hero__stats{
  display:flex;gap:40px;margin-top:32px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,0.1);
}
.hero__stat{text-align:left}
.hero__stat-num{
  font-family:var(--font-mono);font-size:1.5rem;font-weight:700;color:var(--blue-light);
}
.hero__stat-label{font-size:0.78rem;color:rgba(255,255,255,0.5)}

.hero-pagination{
  display:flex;justify-content:flex-start;gap:8px;margin-top:24px;
}
.hero-pagination .swiper-pagination-bullet{
  width:40px;height:2px;border-radius:1px;
  background:rgba(255,255,255,0.25);opacity:1;
  transition:all var(--normal);
}
.hero-pagination .swiper-pagination-bullet-active{
  width:60px;background:var(--blue-light);
  box-shadow:0 0 10px var(--blue-light);
}

.hero__scroll{
  position:absolute;bottom:32px;left:50%;transform:translateX(-50%);z-index:5;
  display:flex;flex-direction:column;align-items:center;gap:6px;
  color:rgba(255,255,255,0.3);font-size:0.7rem;letter-spacing:0.15em;
  text-transform:uppercase;animation:scrollFloat 2s ease-in-out infinite;
}
.hero__scroll-line{
  width:1px;height:28px;
  background:linear-gradient(180deg,var(--blue-light),transparent);
}
@keyframes scrollFloat{
  0%,100%{transform:translateX(-50%) translateY(0)}
  50%{transform:translateX(-50%) translateY(8px)}
}

/* ============================================================
   产能数据模块
   ============================================================ */
.stats-section{
  background:var(--bg-panel);border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{
  text-align:center;padding:40px 20px;
  border-right:1px solid var(--border);position:relative;
}
.stat-item:last-child{border-right:none}
.stat-item::after{
  content:'';position:absolute;bottom:0;left:20%;right:20%;height:2px;
  background:var(--blue);opacity:0;transition:all var(--normal);
}
.stat-item:hover::after{opacity:1}
.stat-item__number{
  font-family:var(--font-mono);font-size:clamp(1.8rem,4vw,3rem);
  font-weight:700;color:#fff;line-height:1;margin-bottom:6px;
  font-variant-numeric:tabular-nums;
}
.stat-item__number span{color:var(--blue-light)}
.stat-item__label{font-size:0.84rem;color:var(--text-muted)}
.stat-item__sup{font-size:0.75rem;color:var(--text-muted);display:block;margin-top:2px}

/* ============================================================
   产品分类卡片
   ============================================================ */
.product-cats{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.prod-cat-card{
  text-align:center;padding:32px 16px 24px;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-md);transition:all var(--normal) var(--ease);
}
.prod-cat-card:hover{
  border-color:var(--border-blue);background:var(--bg-card-hover);
  transform:translateY(-3px);box-shadow:var(--shadow-blue);
}
.prod-cat-card__icon{
  width:56px;height:56px;margin:0 auto 14px;
  border-radius:var(--radius-sm);
  background:var(--blue-dim);display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;color:var(--blue-light);
  transition:all var(--normal) var(--ease);
}
.prod-cat-card:hover .prod-cat-card__icon{
  background:var(--blue);color:#fff;
}
.prod-cat-card__title{
  font-family:var(--font-heading);font-size:0.95rem;font-weight:600;
  color:var(--text-primary);margin-bottom:4px;
}
.prod-cat-card__desc{
  font-size:0.78rem;color:var(--text-muted);
  font-family:var(--font-mono);
}

/* ============================================================
   工艺流程模块
   ============================================================ */
.process{display:grid;grid-template-columns:repeat(5,1fr);gap:0}
.process-item{
  text-align:center;padding:36px 16px;position:relative;
}
.process-item::after{
  content:'';position:absolute;top:44px;left:60%;width:80%;
  height:1px;background:var(--border);
}
.process-item:last-child::after{display:none}
.process-item__step{
  width:48px;height:48px;margin:0 auto 14px;
  border-radius:50%;background:var(--bg-elevated);
  border:2px solid var(--border);display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:0.9rem;font-weight:700;
  color:var(--blue-light);transition:all var(--normal);
  position:relative;z-index:1;
}
.process-item:hover .process-item__step{
  border-color:var(--blue);background:var(--blue-dim);
  box-shadow:0 0 16px var(--blue-glow);
}
.process-item__title{
  font-size:0.9rem;font-weight:600;color:var(--text-primary);margin-bottom:4px;
}
.process-item__desc{
  font-size:0.76rem;color:var(--text-muted);
  font-family:var(--font-mono);
}

/* ============================================================
   应用领域
   ============================================================ */
.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.app-card{
  position:relative;border-radius:var(--radius-md);overflow:hidden;
  aspect-ratio:4/3;cursor:pointer;
}
.app-card img{width:100%;height:100%;object-fit:cover;transition:transform var(--slow) var(--ease)}
.app-card:hover img{transform:scale(1.08)}
.app-card__overlay{
  position:absolute;inset:0;
  background:linear-gradient(transparent 30%,rgba(13,17,23,0.85));
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:20px;transition:all var(--normal);
}
.app-card__label{
  font-family:var(--font-heading);font-size:1rem;font-weight:600;color:#fff;
}
.app-card__sub{
  font-size:0.78rem;color:rgba(255,255,255,0.6);margin-top:2px;
}

/* ============================================================
   检测能力
   ============================================================ */
.test-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.test-card{
  text-align:center;padding:32px 20px;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-md);transition:all var(--normal);
}
.test-card:hover{border-color:var(--border-blue);background:var(--bg-card-hover)}
.test-card__icon{
  width:52px;height:52px;margin:0 auto 14px;border-radius:50%;
  background:var(--orange-dim);display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;color:var(--orange);
}
.test-card__title{
  font-weight:600;color:var(--text-primary);font-size:0.95rem;margin-bottom:4px;
}
.test-card__desc{font-size:0.78rem;color:var(--text-muted);font-family:var(--font-mono)}

/* ============================================================
   新闻列表
   ============================================================ */
.news-list{display:flex;flex-direction:column;gap:14px}
.news-item{
  display:flex;gap:20px;padding:18px;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-md);transition:all var(--fast);
}
.news-item:hover{border-color:var(--border-blue);background:var(--bg-card-hover)}
.news-item__thumb{
  width:140px;height:100px;border-radius:var(--radius-sm);overflow:hidden;
  flex-shrink:0;background:var(--bg-input);
}
.news-item__thumb img{width:100%;height:100%;object-fit:cover}
.news-item__info{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center}
.news-item__title{
  font-family:var(--font-heading);font-size:1rem;font-weight:600;
  color:var(--text-primary);margin-bottom:4px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.news-item__desc{
  font-size:0.85rem;color:var(--text-secondary);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item__date{
  font-family:var(--font-mono);font-size:0.76rem;color:var(--text-muted);margin-top:6px;
}

/* ============================================================
   CTA 模块
   ============================================================ */
.cta-section{
  text-align:center;padding:80px 0;position:relative;overflow:hidden;
}
.cta-section::before{
  pointer-events:none;
  content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:600px;height:600px;
  background:radial-gradient(circle,rgba(26,107,176,0.06) 0%,transparent 65%);
  
}
.cta-card{
  max-width:600px;margin:0 auto;padding:48px;
  background:var(--bg-card);border:1px solid var(--border-blue);
  border-radius:var(--radius-lg);position:relative;overflow:hidden;
}
.cta-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--blue-light),transparent);
}
.cta-section__title{
  font-size:clamp(1.75rem,4vw,2.5rem);margin-bottom:0.75rem;
}

/* ============================================================
   列表页
   ============================================================ */
.list-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.list-header{text-align:center;margin-bottom:40px}
.list-header h1{font-size:clamp(1.75rem,4vw,2.3rem);margin-bottom:0.5rem}

/* 子栏目过滤栏 */
.filter-bar{
  display:flex;align-items:center;gap:8px;overflow-x:auto;
  padding-bottom:6px;margin-bottom:32px;
  -ms-overflow-style:none;scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none}
.filter-bar a{
  display:inline-flex;padding:7px 16px;font-size:0.82rem;font-weight:500;
  color:var(--text-secondary);border:1px solid var(--border);
  border-radius:3px;white-space:nowrap;flex-shrink:0;
  transition:all var(--fast);
}
.filter-bar a:hover,.filter-bar a.active{
  color:var(--blue-light);border-color:var(--border-blue);background:var(--blue-dim);
}

/* ============================================================
   产品详情页
   ============================================================ */
.detail{max-width:900px;margin:0 auto}
.detail-gallery{border-radius:var(--radius-md);overflow:hidden;margin-bottom:36px}
.detail-gallery .swiper-slide{aspect-ratio:16/9}
.detail-gallery .swiper-slide img{width:100%;height:100%;object-fit:cover}
.detail__header{margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid var(--border)}
.detail__title{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:10px}
.detail__meta-row{
  display:flex;flex-wrap:wrap;gap:18px;font-size:0.84rem;color:var(--text-muted);
}
.detail__meta-row i{color:var(--blue-light);margin-right:3px}
.detail__params{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;
  margin-bottom:28px;
}
.detail__param{
  padding:16px;background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-sm);text-align:center;
}
.detail__param-label{font-size:0.72rem;color:var(--text-muted);margin-bottom:3px}
.detail__param-value{
  font-family:var(--font-mono);font-size:0.92rem;font-weight:600;color:var(--text-primary);
}
.detail__body{
  color:var(--text-secondary);line-height:1.95;font-size:0.95rem;letter-spacing:0.015em;
}
.detail__body img{border-radius:var(--radius-sm);margin:24px 0;max-width:100%}
.detail__body p{margin-bottom:16px}
.detail__body h2,.detail__body h3,.detail__body h4{
  font-family:var(--font-heading);color:var(--text-primary);margin-top:28px;margin-bottom:14px;
}

/* Tabs */
.detail-tabs{display:flex;gap:0;border-bottom:2px solid var(--border);margin-bottom:28px}
.detail-tab{
  padding:12px 24px;font-size:0.88rem;font-weight:600;color:var(--text-muted);
  cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;
  transition:all var(--fast);
}
.detail-tab:hover{color:var(--text-secondary)}
.detail-tab.active{color:var(--blue-light);border-bottom-color:var(--blue)}
.tab-panel{display:none}
.tab-panel.active{display:block}

/* ============================================================
   上下篇
   ============================================================ */
.detail__pager{
  display:flex;justify-content:space-between;align-items:center;
  margin-top:44px;padding-top:20px;border-top:1px solid var(--border);
  font-size:0.86rem;color:var(--text-muted);
}
.detail__pager a{color:var(--text-secondary);transition:color var(--fast)}
.detail__pager a:hover{color:var(--blue-light)}

/* 相关推荐 */
.related-title{font-size:1.3rem;font-weight:700;margin:52px 0 20px;color:var(--text-primary)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}

/* ============================================================
   联系我们页
   ============================================================ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.contact-info__item{
  display:flex;align-items:flex-start;gap:14px;
  padding:18px;background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-sm);margin-bottom:10px;
  transition:all var(--fast);
}
.contact-info__item:hover{border-color:var(--border-blue)}
.contact-info__icon{
  width:42px;height:42px;border-radius:var(--radius-sm);
  background:var(--blue-dim);display:flex;align-items:center;justify-content:center;
  color:var(--blue-light);flex-shrink:0;
}
.contact-info__label{font-size:0.78rem;font-weight:600;color:var(--text-primary);margin-bottom:2px}
.contact-info__value{font-size:0.86rem;color:var(--text-secondary)}
.contact-form-card{
  padding:32px;background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-md);
}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:0.84rem;color:var(--text-secondary);margin-bottom:5px}
.form-group label .required{color:var(--orange)}
.form-control{
  width:100%;padding:12px 16px;background:var(--bg-input);border:1px solid var(--border);
  border-radius:var(--radius-xs);color:var(--text-primary);font-size:0.9rem;
  transition:all var(--fast);
}
.form-control:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-dim);
}
textarea.form-control{resize:vertical;min-height:100px}
select.form-control{
  appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23484F58' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:36px;
}

/* ============================================================
   搜索页
   ============================================================ */
.search-box{max-width:660px;margin:0 auto}
.search-form-row{display:flex;gap:10px}
.search-form-row input{
  flex:1;padding:14px 18px;padding-left:44px;
  background:var(--bg-input);border:1px solid var(--border);
  border-radius:var(--radius-xs);color:var(--text-primary);font-size:0.94rem;
}
.search-form-row input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-dim)}
.search-input-wrap{position:relative;flex:1}
.search-input-wrap i{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  color:var(--text-muted);font-size:0.94rem;
}
.search-result-item{
  display:flex;gap:16px;padding:16px;background:var(--bg-card);
  border:1px solid var(--border);border-radius:var(--radius-sm);
  transition:all var(--fast);margin-bottom:8px;
}
.search-result-item:hover{border-color:var(--border-blue);background:var(--bg-card-hover)}
.search-result-item__thumb{
  width:100px;height:80px;border-radius:var(--radius-xs);overflow:hidden;
  flex-shrink:0;background:var(--bg-input);
}
.search-result-item__thumb img{width:100%;height:100%;object-fit:cover}
.search-result-item__info{flex:1;min-width:0}
.search-result-item__title{
  font-family:var(--font-heading);font-size:0.98rem;font-weight:600;
  color:var(--text-primary);margin-bottom:3px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.search-result-item__date{font-size:0.76rem;color:var(--text-muted);margin-bottom:3px}
.search-result-item__desc{
  font-size:0.84rem;color:var(--text-secondary);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* ============================================================
   分页
   ============================================================ */
.pagination{display:flex;justify-content:center;align-items:center;gap:3px;margin-top:44px}
.pagination a,.pagination span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:38px;padding:0 6px;font-size:0.86rem;
  color:var(--text-secondary);border-radius:var(--radius-xs);
  transition:all var(--fast);
}
.pagination a:hover{background:rgba(255,255,255,0.05);color:var(--text-primary)}
.pagination .active{background:var(--blue);color:#fff;font-weight:600}
.pagination .disabled{color:var(--text-muted);pointer-events:none}

/* 空状态 */
.empty-state{text-align:center;padding:60px 20px}
.empty-state i{font-size:2.5rem;color:var(--text-muted);margin-bottom:14px;display:block}
.empty-state p{color:var(--text-muted);font-size:0.92rem}

/* ============================================================
   Footer — 深色四列
   ============================================================ */
.footer{background:var(--bg-panel);border-top:1px solid var(--border)}
.footer__top-line{height:2px;background:linear-gradient(90deg,transparent,var(--blue),var(--blue-light),transparent)}
.footer__grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding:56px 0 36px;max-width:var(--container-max);
  margin:0 auto;padding-left:28px;padding-right:28px;
}
.footer__brand-desc{font-size:0.85rem;color:var(--text-secondary);line-height:1.7;margin:14px 0}
.footer__social{display:flex;gap:8px}
.footer__social a{
  width:34px;height:34px;border-radius:var(--radius-xs);
  background:rgba(255,255,255,0.04);display:flex;
  align-items:center;justify-content:center;color:var(--text-muted);
  font-size:0.9rem;transition:all var(--fast);
}
.footer__social a:hover{background:var(--blue);color:#fff}
.footer__col-title{
  font-family:var(--font-heading);font-size:0.95rem;font-weight:600;
  color:var(--text-primary);margin-bottom:18px;
}
.footer__links{display:flex;flex-direction:column;gap:9px}
.footer__links a{font-size:0.85rem;color:var(--text-secondary);transition:color var(--fast)}
.footer__links a:hover{color:var(--blue-light)}
.footer__contact-item{
  display:flex;align-items:flex-start;gap:10px;font-size:0.83rem;
  color:var(--text-secondary);margin-bottom:8px;
}
.footer__contact-item i{color:var(--blue-light);margin-top:3px;flex-shrink:0}
.footer__qrcode{
  width:110px;height:110px;background:#fff;border-radius:var(--radius-sm);
  padding:6px;display:flex;align-items:center;justify-content:center;
  font-size:0.68rem;color:#999;
}
.footer__qr-text{font-size:0.78rem;color:var(--text-muted);margin-top:8px}
.footer__bottom{border-top:1px solid var(--border);padding:18px 0}
.footer__bottom-inner{
  display:flex;justify-content:space-between;align-items:center;
  max-width:var(--container-max);margin:0 auto;padding:0 28px;
  font-size:0.78rem;color:var(--text-muted);flex-wrap:wrap;gap:8px;
}
.footer__bottom a{color:var(--text-muted);transition:color var(--fast)}
.footer__bottom a:hover{color:var(--blue-light)}

/* 友情链接 */
.friend-links{display:flex;flex-wrap:wrap;gap:14px;align-items:center;padding:14px 0}
.friend-links__label{font-size:0.8rem;color:var(--text-muted);flex-shrink:0}
.friend-links a{font-size:0.8rem;color:var(--text-muted);transition:color var(--fast)}
.friend-links a:hover{color:var(--blue-light)}

/* ============================================================
   返回顶部 & 在线客服
   ============================================================ */
.back-top{
  position:fixed;right:18px;bottom:76px;width:38px;height:38px;
  border-radius:var(--radius-xs);background:rgba(255,255,255,0.05);
  border:1px solid var(--border);color:var(--text-muted);
  display:flex;align-items:center;justify-content:center;
  font-size:0.85rem;cursor:pointer;z-index:80;
  opacity:0;transition:all var(--normal) var(--ease);
}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{background:var(--blue);color:#fff;border-color:var(--blue)}

.customer-service{
  position:fixed;right:18px;bottom:24px;width:48px;height:48px;
  border-radius:50%;background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;cursor:pointer;z-index:80;
  box-shadow:0 2px 16px rgba(26,107,176,0.4);
  transition:all var(--normal);animation:csBreathe 2s ease-in-out infinite;
}
.customer-service:hover{background:var(--blue-light);transform:scale(1.08)}
@keyframes csBreathe{
  0%,100%{box-shadow:0 2px 16px rgba(26,107,176,0.4)}
  50%{box-shadow:0 2px 28px rgba(26,107,176,0.65)}
}

/* ============================================================
   动画系统
   ============================================================ */
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(24px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes countUp{from{opacity:0}}
@keyframes borderGlow{
  0%,100%{border-color:var(--border)}
  50%{border-color:var(--border-blue)}
}
@keyframes shimmer{
  0%{transform:translateX(-100%) skewX(-15deg)}
  100%{transform:translateX(200%) skewX(-15deg)}
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(26,107,176,0.4)}
  70%{box-shadow:0 0 0 10px rgba(26,107,176,0)}
  100%{box-shadow:0 0 0 0 rgba(26,107,176,0)}
}

.btn--primary.pulse{animation:pulse 2s infinite}

/* 卡片扫光 */
.shimmer-overlay{position:relative;overflow:hidden}
.shimmer-overlay::after{
  content:'';position:absolute;top:0;left:0;width:60%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.02),transparent);
  transform:translateX(-100%) skewX(-15deg);
  
}
.shimmer-overlay:hover::after{animation:shimmer 0.7s ease-in-out}

/* 数据模块发光条 */
.section-divider{
  width:60px;height:3px;background:var(--blue);margin:0 auto 40px;
}

/* ============================================================
   响应式 — 平板 (768px-1023px)
   ============================================================ */
@media (max-width:1023px){
  :root{--section-py:64px}
  .header__nav,.header__actions{display:none}
  .hamburger{display:flex}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat-item{border-right:none;border-bottom:1px solid var(--border)}
  .product-cats{grid-template-columns:repeat(3,1fr)}
  .process{grid-template-columns:repeat(3,1fr)}
  .process-item::after{display:none}
  .app-grid{grid-template-columns:repeat(2,1fr)}
  .test-grid{grid-template-columns:repeat(2,1fr)}
  .list-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .hero__stats{display:none}
}

/* ============================================================
   响应式 — 移动端 (<768px)
   ============================================================ */
@media (max-width:767px){
  :root{--section-py:34px}
  .container{padding:0 16px}
  .section{padding:34px 0}
  .section-divider{margin-bottom:20px}

  /* ---------- 标题组 ---------- */
  .section-head{margin-bottom:20px}
  .section-head--row{align-items:center}
  .section-head--sm,.section-head--xs{margin-bottom:16px}
  .section-title{font-size:1.35rem}
  .section-subtitle{font-size:0.86rem;line-height:1.6}
  .section-tag{font-size:0.68rem}

  /* ---------- Hero ---------- */
  .hero{height:60vh;min-height:400px;max-height:480px}
  .hero__content{padding-bottom:48px;padding-left:16px;padding-right:16px}
  .hero__title{font-size:1.75rem;margin-bottom:0.6rem}
  .hero__subtitle{font-size:0.9rem;margin-bottom:1.2rem}
  .hero__actions{flex-direction:row;flex-wrap:wrap;gap:10px}
  .hero__actions .btn{flex:1 1 auto;justify-content:center}
  .hero__scroll{display:none}
  .hero-pagination{margin-top:16px}

  /* ---------- 内页 Banner / 面包屑 ---------- */
  /* 压到 180px 后内容会顶到固定头部下面，用 padding-top 让出头部高度 */
  .inner-banner{height:180px!important;padding-top:var(--header-h)}
  .inner-banner__title{font-size:1.5rem;margin-bottom:0.25rem}
  .inner-banner__subtitle{font-size:0.88rem}
  .breadcrumb{padding:9px 16px;font-size:0.76rem}

  /* ---------- 横滑轨道通用规则 ---------- */
  .product-cats,
  .process,
  .app-grid,
  .test-grid,
  .list-grid--scroll,
  .related-grid{
    display:flex;
    gap:12px;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    overscroll-behavior-x:contain;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
    -ms-overflow-style:none;
    /* 左右出血到屏幕边缘，让下一张露出一角作为滑动提示 */
    margin-left:-16px;
    margin-right:-16px;
    padding:2px 16px 10px;
    scroll-padding-left:16px;
  }
  .product-cats::-webkit-scrollbar,
  .process::-webkit-scrollbar,
  .app-grid::-webkit-scrollbar,
  .test-grid::-webkit-scrollbar,
  .list-grid--scroll::-webkit-scrollbar,
  .related-grid::-webkit-scrollbar{display:none}

  .product-cats>*,
  .process>*,
  .app-grid>*,
  .test-grid>*,
  .list-grid--scroll>*,
  .related-grid>*{
    flex-grow:0;flex-shrink:0;scroll-snap-align:start;
  }
  .product-cats>*{flex-basis:44%}
  .process>*{flex-basis:40%}
  .app-grid>*{flex-basis:68%}
  .test-grid>*{flex-basis:60%}
  .list-grid--scroll>*{flex-basis:72%}
  .related-grid>*{flex-basis:70%}
  .process-item::after{display:none}

  /* ---------- 横滑指示点（由 main.js 注入） ---------- */
  .hscroll-dots{display:flex;justify-content:center;gap:5px;margin-top:2px}
  .hscroll-dots span{
    width:5px;height:5px;border-radius:50%;
    background:rgba(255,255,255,0.18);
    transition:all var(--fast);
  }
  .hscroll-dots span.on{width:16px;border-radius:3px;background:var(--blue-light)}

  /* ---------- 产能数据 ---------- */
  .stat-item{padding:20px 10px}
  .stat-item__number{font-size:1.6rem}
  .stat-item__label{font-size:0.76rem}
  .stat-item__sup{font-size:0.68rem}

  /* ---------- 产品分类卡 ---------- */
  .prod-cat-card{padding:20px 10px 16px}
  .prod-cat-card__icon{width:42px;height:42px;font-size:1.05rem;margin-bottom:9px}
  .prod-cat-card__title{font-size:0.88rem}
  .prod-cat-card__desc{font-size:0.7rem;line-height:1.5}

  /* ---------- 产品卡 ---------- */
  .card__body{padding:12px}
  .card__tag{font-size:0.64rem;padding:2px 8px;margin-bottom:6px}
  .card__title{font-size:0.88rem;margin-bottom:4px}
  .card__desc{font-size:0.76rem;line-height:1.55}
  .card__meta{gap:8px;margin-top:8px;padding-top:8px;font-size:0.68rem}
  .card__image{aspect-ratio:4/3}

  /* ---------- 工艺流程 ---------- */
  .process-item{padding:20px 10px}
  .process-item__step{width:40px;height:40px;font-size:0.82rem;margin-bottom:9px}
  .process-item__title{font-size:0.82rem}
  .process-item__desc{font-size:0.7rem;line-height:1.5}

  /* ---------- 应用领域 ---------- */
  .app-card__overlay{padding:12px}
  .app-card__label{font-size:0.9rem}
  .app-card__sub{font-size:0.7rem}

  /* ---------- 检测能力 ---------- */
  .test-card{padding:18px 10px}
  .test-card__icon{width:42px;height:42px;font-size:1rem;margin-bottom:9px}
  .test-card__title{font-size:0.86rem}
  .test-card__desc{font-size:0.7rem;line-height:1.5}

  /* ---------- 新闻列表：保持左图右文，只把缩略图收小 ---------- */
  .news-list{gap:10px}
  .news-item{flex-direction:row;gap:12px;padding:11px}
  .news-item__thumb{width:104px;height:76px}
  .news-item__title{font-size:0.88rem;margin-bottom:2px}
  .news-item__desc{font-size:0.76rem;line-height:1.55;-webkit-line-clamp:2}
  .news-item__date{font-size:0.68rem;margin-top:4px}

  /* ---------- 列表页（目录型 → 2 列，便于扫全） ---------- */
  .list-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .filter-bar{gap:6px;padding-bottom:10px}
  .pagination{margin-top:24px}

  /* ---------- 网格下的按钮行 ---------- */
  .grid-cta{margin-top:18px}
  .grid-cta .btn{width:100%;justify-content:center}

  /* ---------- CTA ---------- */
  .cta-section{padding:34px 0}
  .cta-card{padding:22px 16px}
  .cta-section__title{font-size:1.25rem}

  /* ---------- 合作品牌 ---------- */
  .friend-links{gap:9px;padding:10px 0;justify-content:flex-start!important}
  .friend-links a{font-size:0.72rem;padding:5px 11px!important}

  /* ---------- 详情页 ---------- */
  .detail-gallery{margin-bottom:18px}
  .detail__header{margin-bottom:18px;padding-bottom:12px}
  .detail__title{font-size:1.3rem}
  .detail__meta-row{font-size:0.74rem;gap:8px}
  .detail__params{grid-template-columns:repeat(2,1fr);gap:8px}
  .detail__param{padding:10px}
  .detail__param-label{font-size:0.66rem}
  .detail__param-value{font-size:0.84rem}
  .detail-tabs{overflow-x:auto;scrollbar-width:none;margin-bottom:18px}
  .detail-tabs::-webkit-scrollbar{display:none}
  .detail-tab{padding:9px 14px;font-size:0.82rem;white-space:nowrap;flex-shrink:0}
  .detail__body{font-size:0.88rem;line-height:1.8}
  .detail__body p{margin-bottom:12px}
  .detail__body img{margin:16px 0}
  .detail__body h2,.detail__body h3,.detail__body h4{margin-top:20px;margin-bottom:8px}
  .detail__pager{margin-top:22px;padding-top:14px;font-size:0.76rem;flex-direction:column;gap:8px;text-align:center}
  .related-title{font-size:1.05rem;margin:24px 0 14px}

  /* ---------- 联系 / 表单 ---------- */
  .contact-grid{grid-template-columns:1fr;gap:24px}
  .contact-info__item{padding:12px;gap:10px}
  .contact-info__icon{width:38px;height:38px;font-size:0.9rem}
  .contact-form-card{padding:18px 14px}
  .form-group{margin-bottom:14px}

  /* ---------- 搜索页 ---------- */
  .search-form-row{flex-direction:column}
  .search-result-item{flex-direction:column;gap:10px;padding:12px}
  .search-result-item__thumb{width:100%;height:140px}

  /* ---------- Footer：四列改两列 + 通栏 ---------- */
  .footer__grid{
    grid-template-columns:1fr 1fr;gap:22px 18px;
    padding:26px 16px 20px;
  }
  .footer__grid>div:first-child{grid-column:1/-1}
  .footer__brand-desc{font-size:0.78rem;line-height:1.6;margin:10px 0}
  .footer__social a{width:32px;height:32px;font-size:0.82rem}
  .footer__col-title{font-size:0.86rem;margin-bottom:10px}
  .footer__links{gap:6px}
  .footer__links a{font-size:0.78rem}
  .footer__contact-item{font-size:0.76rem;margin-bottom:7px;gap:8px}
  /* 关注我们：通栏 + 二维码与说明横向排布 */
  .footer__grid>div:last-child{
    grid-column:1/-1;display:flex;align-items:center;gap:14px;
  }
  .footer__grid>div:last-child .footer__col-title{display:none}
  .footer__qrcode{width:74px;height:74px;flex-shrink:0;font-size:0.64rem;padding:4px}
  .footer__qr-text{font-size:0.74rem;margin-top:0}
  .footer__bottom-inner{flex-direction:column;text-align:center;padding:0 16px;font-size:0.72rem}

  /* ---------- 浮动按钮 ---------- */
  .back-top{right:10px;bottom:74px;width:40px;height:40px}
  .customer-service{right:10px;bottom:18px;width:44px;height:44px;font-size:1.1rem}
}

@media (max-width:374px){
  body{font-size:14px}
  .stats{grid-template-columns:1fr}
  .product-cats{grid-template-columns:1fr}
  .test-grid{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:0.01ms!important;animation-iteration-count:1!important;
    transition-duration:0.01ms!important;scroll-behavior:auto!important;
  }
}