/* ============================================================
   德州宏坤橡塑助剂有限公司官网样式 —— 参考利安隆(rianlon.cn)设计风格
   主色：深蓝 #0a54a5 | 辅助：青蓝 #00b2b8 | 深色背景：#062a54
   ============================================================ */

:root {
  --c-primary: #0a54a5;
  --c-primary-dark: #083a74;
  --c-navy: #062a54;
  --c-accent: #00b2b8;
  --c-text: #333b46;
  --c-text-light: #6b7686;
  --c-bg-light: #f4f8fc;
  --c-border: #e3eaf2;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(6, 42, 84, 0.10);
  --shadow-hover: 0 18px 44px rgba(6, 42, 84, 0.18);
  --header-h: 84px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

/* scrollbar-gutter: stable 让浏览器永久预留滚动条宽度，
   弹窗打开时锁定滚动不会抽掉滚动条，避免页面宽度突变造成左右抖动 */
html { scroll-behavior: smooth; scrollbar-gutter: stable; }

body {
  font-family: var(--font);
  color: var(--c-text);
  background: #fff;
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

/* ---------------- 顶部导航 ---------------- */
/* --sbw-fix：弹窗锁定滚动时由 JS 写入的滚动条宽度。
   position:fixed 元素以视口为定位基准，不受 html 的 scrollbar-gutter 保护，
   滚动条消失后会整体右移，故在此扣回同等宽度，与正文保持对齐 */
.header {
  position: fixed;
  top: 0; left: 0; right: var(--sbw-fix, 0px);
  z-index: 100;
  transition: background .4s, box-shadow .4s;
  /* 透明态压一层自上而下的深色渐变，保证白字在任何 Banner 上都清晰 */
  background: linear-gradient(180deg, rgba(4, 24, 48, .58) 0%, rgba(4, 24, 48, .22) 52%, rgba(4, 24, 48, 0) 100%);
}

/* 首屏渲染瞬间禁用过渡：避免二级页加载时头部由深色渐变态“闪”成白底 */
.header.no-anim,
.header.no-anim .header-inner,
.header.no-anim .logo-img,
.header.no-anim .nav-link,
.header.no-anim .lang-seg,
.header.no-anim .btn-header { transition: none; }

/* 顶部品牌发丝线：蓝→青缓慢横向流动，强化横向延展的大气感 */
.header::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-accent) 32%, #8ff4f6 50%, var(--c-accent) 68%, var(--c-primary) 100%);
  background-size: 200% 100%;
  animation: headerLine 12s linear infinite;
  pointer-events: none;
}

/* 位移恰好一个平铺宽度，循环无接缝 */
@keyframes headerLine {
  from { background-position: 0% 0; }
  to { background-position: 200% 0; }
}

.header.scrolled {
  background: rgba(255, 255, 255, .97);
  box-shadow: 0 8px 30px rgba(6, 42, 84, .12);
  backdrop-filter: blur(12px);
}

.header-inner {
  width: min(1360px, 94%);
  margin: 0 auto;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Logo 图片：深色背景（透明头部/页脚）下反白，滚动后显示原色 */
.logo-img {
  height: 46px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1) drop-shadow(0 2px 10px rgba(0, 0, 0, .32));
  transition: filter .4s;
}

/* 头部高度与 Logo 尺寸滚动前后保持不变，仅切换反白/原色 */
.header .logo-img { height: 50px; }
.header.scrolled .logo-img { filter: none; }

/* ---- Logo 后公司名称：主标题 + 另一语言小号副标题 ---- */
.logo-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  line-height: 1.2;
}

.logo-name {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #fff;
  white-space: nowrap;
  text-shadow: 0 2px 10px rgba(0, 0, 0, .28);
  transition: color .4s, text-shadow .4s;
}

.logo-sub {
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .4px;
  color: rgba(255, 255, 255, .74);
  white-space: nowrap;
  transition: color .4s;
}

/* 英文主标题较长，收紧字号与字距 */
[lang="en"] .logo-name { font-size: 13px; letter-spacing: 0; font-weight: 600; }
[lang="en"] .logo-sub { font-size: 12px; }

/* 滚动后（白底）配色反转 */
.header.scrolled .logo-name { color: var(--c-navy); text-shadow: none; }
.header.scrolled .logo-sub { color: var(--c-text-light); }

/* ---- 导航：中主英副双行、通高点击区 ---- */
.nav { display: flex; align-items: stretch; gap: 2px; height: 100%; }

.nav-link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 0 20px;
  color: rgba(255, 255, 255, .92);
  white-space: nowrap;
  transition: color .35s;
}

.nav-main {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 2px;
  line-height: 1.3;
  transition: transform .35s cubic-bezier(.4, 0, .2, 1);
}

.nav-sub {
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 1.8px;
  line-height: 1.2;
  text-transform: uppercase;
  opacity: .48;
  transition: opacity .35s, color .35s;
}

/* 英文标签较长，收紧字号与字距，保证一行不溢出 */
[lang="en"] .nav-link { padding: 0 16px; }
[lang="en"] .nav-main { font-size: 15.5px; letter-spacing: .6px; }

/* hover 光晕底板 */
.nav-link::before {
  content: "";
  position: absolute;
  inset: 15px 7px;
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .16), rgba(255, 255, 255, .03));
  opacity: 0;
  transform: translateY(-8px) scale(.96);
  transition: opacity .35s, transform .35s cubic-bezier(.4, 0, .2, 1);
  pointer-events: none;
}

/* 底部渐变指示条 */
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 9px;
  width: 30px; height: 3px;
  margin-left: -15px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--c-accent), #8ff4f6);
  box-shadow: 0 0 14px rgba(0, 178, 184, .8);
  transform: scaleX(0);
  transition: transform .4s cubic-bezier(.4, 0, .2, 1);
  pointer-events: none;
}

.nav-link:hover { color: #fff; }
.nav-link:hover::before { opacity: 1; transform: none; }
.nav-link:hover .nav-main { transform: translateY(-2px); }
.nav-link:hover .nav-sub { opacity: .9; color: #8ff4f6; }
.nav-link:hover::after,
.nav-link.active::after { transform: scaleX(1); }

.nav-link.active { color: #fff; }
.nav-link.active .nav-sub { opacity: .95; color: #8ff4f6; }

/* 滚动后（白底）配色反转 */
.header.scrolled .nav-link { color: #22303f; }
.header.scrolled .nav-link::before { background: linear-gradient(180deg, rgba(10, 84, 165, .10), rgba(10, 84, 165, .02)); }
.header.scrolled .nav-link::after {
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  box-shadow: 0 0 12px rgba(10, 84, 165, .3);
}
.header.scrolled .nav-link:hover,
.header.scrolled .nav-link.active { color: var(--c-primary); }
.header.scrolled .nav-link:hover .nav-sub,
.header.scrolled .nav-link.active .nav-sub { color: var(--c-accent); opacity: 1; }

.nav-toggle { display: none; }

/* ---- 头部右侧：咨询 CTA + 语言分段器 + 移动端菜单 ---- */
.header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }

/* 咨询按钮：品牌渐变胶囊 + 扫光（纯文字，不带箭头） */
.btn-header {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 24px;
  border: none;
  border-radius: 26px;
  background: linear-gradient(135deg, var(--c-primary) 0%, #1878cd 52%, var(--c-accent) 128%);
  color: #fff;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  white-space: nowrap;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(10, 84, 165, .34);
  transition: transform .35s, box-shadow .35s;
}

.btn-header::after {
  content: "";
  position: absolute;
  top: 0; left: -70%;
  width: 45%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, .45), transparent);
  transform: skewX(-20deg);
  transition: left .7s ease;
  pointer-events: none;
}

.btn-header:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0, 178, 184, .42); }
.btn-header:hover::after { left: 125%; }

/* 语言分段控制器：滑块跟随当前语言 */
.lang-seg {
  position: relative;
  display: flex;
  padding: 3px;
  border: 1px solid rgba(255, 255, 255, .45);
  border-radius: 22px;
  background: rgba(255, 255, 255, .10);
  backdrop-filter: blur(4px);
  overflow: hidden;
  transition: border-color .4s, background .4s;
}

.lang-seg::before {
  content: "";
  position: absolute;
  top: 3px; bottom: 3px; left: 3px;
  width: 48px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  box-shadow: 0 3px 12px rgba(0, 178, 184, .45);
  transition: transform .45s cubic-bezier(.4, 0, .2, 1);
}

.lang-seg.en::before { transform: translateX(48px); }

.lang-opt {
  position: relative;
  z-index: 1;
  width: 48px;
  padding: 5px 0;
  border: none;
  background: none;
  font-family: var(--font);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 1px;
  text-align: center;
  color: rgba(255, 255, 255, .82);
  cursor: pointer;
  transition: color .35s;
}

.lang-opt:hover,
.lang-opt.active { color: #fff; }

.header.scrolled .lang-seg { border-color: rgba(10, 84, 165, .26); background: rgba(10, 84, 165, .05); }
.header.scrolled .lang-opt { color: rgba(10, 84, 165, .7); }
.header.scrolled .lang-opt:hover { color: var(--c-primary); }
.header.scrolled .lang-opt.active { color: #fff; }

/* ---------------- Banner 轮播 ---------------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 560px;
  max-height: 960px;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1s ease;
}

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

.hero-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(4, 24, 48, .68) 0%, rgba(4, 24, 48, .35) 45%, rgba(4, 24, 48, .08) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  width: min(1200px, 92%);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  color: #fff;
}

.hero-content h2 {
  font-size: clamp(30px, 4.6vw, 56px);
  font-weight: 700;
  letter-spacing: 3px;
  text-shadow: 0 4px 18px rgba(0, 0, 0, .35);
  opacity: 0;
  transform: translateY(30px);
  animation: heroUp .9s .2s forwards;
}

.hero-en {
  margin-top: 16px;
  font-size: clamp(12px, 1.3vw, 17px);
  letter-spacing: 3px;
  color: rgba(255, 255, 255, .82);
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(30px);
  animation: heroUp .9s .45s forwards;
}

.btn-hero {
  margin-top: 42px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 16px 52px;
  border: 1px solid rgba(255, 255, 255, .72);
  border-radius: 44px;
  background: rgba(255, 255, 255, .10);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 5px;
  box-shadow: 0 12px 34px rgba(4, 24, 48, .3);
  transition: background .4s, border-color .4s, box-shadow .4s, translate .4s cubic-bezier(.4, 0, .2, 1);
  opacity: 0;
  transform: translateY(30px);
  animation: heroUp .9s .7s forwards;
}

/* 右侧箭头：hover 时向前推出 */
.btn-hero::after {
  content: "";
  width: 9px; height: 9px;
  margin-left: -4px;
  border-top: 2px solid #fff;
  border-right: 2px solid #fff;
  opacity: .8;
  transform: rotate(45deg);
  transition: transform .4s cubic-bezier(.4, 0, .2, 1), opacity .4s;
}

/* 扫光 */
.btn-hero::before {
  content: "";
  position: absolute;
  top: 0; left: -70%;
  width: 45%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, .42), transparent);
  transform: skewX(-20deg);
  transition: left .8s ease;
  pointer-events: none;
}

.btn-hero:hover {
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  border-color: transparent;
  box-shadow: 0 16px 42px rgba(0, 178, 184, .45);
  /* 用独立 translate 属性上浮：入场动画的 transform forwards 会覆盖 hover 的 transform */
  translate: 0 -3px;
}

.btn-hero:hover::before { left: 125%; }
.btn-hero:hover::after { transform: rotate(45deg) translate(4px, -4px); opacity: 1; }

.hero-slide:not(.active) .hero-content h2,
.hero-slide:not(.active) .hero-content p,
.hero-slide:not(.active) .hero-content .btn-hero { animation: none; opacity: 0; }

@keyframes heroUp {
  to { opacity: 1; transform: translateY(0); }
}

.hero-dots {
  position: absolute;
  left: 50%; bottom: 34px;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: 12px;
}

.hero-dots .dot {
  position: relative;
  overflow: hidden;
  width: 34px; height: 4px;
  border: none;
  border-radius: 4px;
  background: rgba(255, 255, 255, .45);
  cursor: pointer;
  transition: background .3s;
}

.hero-dots .dot.active { background: var(--c-accent); }

/* 当前圆点内的白色进度条，与自动轮播同节奏；悬停 banner 时同步暂停 */
.hero-dots .dot.active::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(255, 255, 255, .92);
  transform: scaleX(0);
  transform-origin: left;
  animation: dotProgress 5s linear forwards;
}

.hero:hover .hero-dots .dot.active::after { animation-play-state: paused; }

@keyframes dotProgress {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  width: 48px; height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, .14);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  transition: background .3s;
}

.hero-arrow:hover { background: var(--c-accent); }
.hero-arrow.prev { left: 26px; }
.hero-arrow.next { right: 26px; }

/* ---------------- 通用 section ---------------- */
.section { padding: 100px 0; }

.section-head {
  text-align: center;
  margin-bottom: 58px;
}

.section-title {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  color: var(--c-navy);
  letter-spacing: 3px;
}

.section-en {
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--c-accent);
  text-transform: uppercase;
}

.section-line {
  display: block;
  width: 56px; height: 3px;
  margin: 18px auto 0;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
}

.section-desc {
  margin-top: 20px;
  font-size: 15px;
  color: var(--c-text-light);
  max-width: 660px;
  margin-left: auto;
  margin-right: auto;
}

.section-head.light .section-title { color: #fff; }
.section-head.light .section-desc { color: rgba(255, 255, 255, .72); }

.btn-more {
  display: inline-block;
  margin-top: 30px;
  padding: 12px 42px;
  border-radius: 40px;
  border: 1px solid var(--c-primary);
  color: var(--c-primary);
  font-size: 14px;
  letter-spacing: 3px;
  transition: background .3s, color .3s, transform .3s;
}

.btn-more:hover {
  background: var(--c-primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-more.dark {
  border-color: var(--c-navy);
  color: var(--c-navy);
}
.btn-more.dark:hover { background: var(--c-navy); }

/* 留言提交过程中禁用按钮，避免重复写入客户留言表 */
.btn-more:disabled, .btn-more:disabled:hover {
  opacity: .55;
  cursor: not-allowed;
  transform: none;
  background: transparent;
  color: var(--c-primary);
}

.consult-submit:disabled, .consult-submit:disabled:hover {
  opacity: .55;
  cursor: not-allowed;
  transform: none;
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}

/* ---------------- 关于宏坤 ---------------- */
.about-body {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-img {
  position: relative;
}

.about-img img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.about-badge {
  position: absolute;
  right: -22px; bottom: -26px;
  padding: 20px 30px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: #fff;
  text-align: center;
  box-shadow: var(--shadow-hover);
}

.about-badge strong { font-size: 34px; font-weight: 800; letter-spacing: 1px; }
.about-badge span { display: block; font-size: 13px; opacity: .9; letter-spacing: 2px; }

.about-text h3 {
  font-size: clamp(20px, 2.2vw, 27px);
  color: var(--c-navy);
  line-height: 1.5;
  margin-bottom: 22px;
}

.about-text p {
  margin-bottom: 16px;
  font-size: 15px;
  color: var(--c-text-light);
  text-align: justify;
}

/* ---------------- 产品中心 ---------------- */
.products { background: #fff; }

/* 首页区块深浅节奏：关于(白) → 优势+数字(深) → 板块(浅) → 产品(白) → 新闻(浅) → 联系(深) */
.segments { background: var(--c-bg-light); }
.news { background: var(--c-bg-light); }

.product-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-bottom: 44px;
}

.product-tab {
  padding: 11px 32px;
  border: 1px solid var(--c-border);
  border-radius: 40px;
  background: #fff;
  font-size: 15px;
  color: var(--c-text);
  cursor: pointer;
  letter-spacing: 1px;
  transition: all .3s;
}

.product-tab:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.product-tab.active {
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 20px rgba(10, 84, 165, .3);
}

.product-panel-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 36px;
}

.product-panel-head h3 {
  font-size: 22px;
  color: var(--c-navy);
}

.product-panel-head p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--c-text-light);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.product-card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
  overflow: hidden;
  transition: transform .35s, box-shadow .35s;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.product-card .thumb {
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #eef4fb, #e4f4f5);
}

.product-card .thumb svg {
  width: 62px; height: 62px;
  fill: var(--c-primary);
  opacity: .75;
}

.product-card .info { padding: 18px 20px; }
.product-card .info h4 { font-size: 16px; color: var(--c-navy); }
.product-card .info p {
  margin-top: 6px;
  font-size: 13px;
  color: var(--c-text-light);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-empty {
  padding: 70px 20px;
  text-align: center;
  background: #fff;
  border: 1px dashed var(--c-border);
  border-radius: var(--radius);
}

.product-empty svg {
  width: 58px; height: 58px;
  margin: 0 auto 16px;
  fill: #c3d2e2;
}

.product-empty p { color: var(--c-text-light); font-size: 15px; }
.product-empty .tip { margin-top: 6px; font-size: 13px; color: #9aa7b8; }

/* ---------------- 我们的优势 ---------------- */
.strength {
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(0, 178, 184, .22), transparent 60%),
    radial-gradient(900px 480px at 0% 110%, rgba(10, 84, 165, .5), transparent 60%),
    linear-gradient(160deg, var(--c-navy), #0a3f7e);
}

.strength-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.strength-card {
  padding: 34px 22px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .14);
  text-align: center;
  transition: transform .35s, background .35s;
}

.strength-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, .13);
}

.strength-icon {
  width: 66px; height: 66px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  box-shadow: 0 8px 22px rgba(0, 178, 184, .35);
}

.strength-icon svg { width: 32px; height: 32px; fill: #fff; }

.strength-card h3 {
  color: #fff;
  font-size: 18px;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.strength-card p {
  font-size: 13px;
  color: rgba(255, 255, 255, .75);
  text-align: justify;
}

/* ---------------- 数字宏坤 ---------------- */
.stats {
  padding: 74px 0;
  background: #fff;
  border-bottom: 1px solid var(--c-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-num {
  font-size: clamp(34px, 4vw, 50px);
  font-weight: 800;
  color: var(--c-primary);
  line-height: 1.15;
}

.stat-num .stat-unit { font-size: .5em; font-weight: 700; margin-left: 2px; }
.stat-num.stat-text { font-size: clamp(26px, 3vw, 38px); letter-spacing: 1px; }

.stat-label {
  margin-top: 8px;
  font-size: 14px;
  color: var(--c-text-light);
  letter-spacing: 2px;
}

/* ---------------- 新闻中心 ---------------- */
.news-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-auto-rows: 1fr;
  align-items: stretch;
  gap: 22px;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 118px;
  padding: 26px 28px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--c-border);
  transition: all .35s;
}

.news-item:hover {
  background: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.news-date {
  flex: none;
  box-sizing: border-box;
  width: 100px;
  text-align: center;
  padding-right: 22px;
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
}

.news-date strong { font-size: 26px; color: var(--c-primary); font-weight: 800; white-space: nowrap; }
.news-date span { font-size: 13px; color: var(--c-text-light); }

.news-body { flex: 1; min-width: 0; }
.news-body h3 {
  font-size: 17px;
  color: var(--c-navy);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-body p {
  margin-top: 6px;
  font-size: 13px;
  color: var(--c-text-light);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-arrow {
  flex: none;
  font-size: 20px;
  color: var(--c-accent);
  transition: transform .3s;
}
.news-item:hover .news-arrow { transform: translateX(6px); }

.news-more { text-align: center; margin-top: 40px; }

/* ---------------- 联系我们 ---------------- */
.contact {
  background:
    radial-gradient(900px 420px at 100% 0%, rgba(0, 178, 184, .2), transparent 60%),
    linear-gradient(150deg, #083a74, var(--c-navy));
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.contact-card {
  padding: 34px 24px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .14);
  text-align: center;
  transition: transform .35s, background .35s;
}

.contact-card:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, .12);
}

.contact-icon {
  width: 58px; height: 58px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-icon svg { width: 26px; height: 26px; fill: #fff; }

.contact-card h3 { color: #fff; font-size: 17px; letter-spacing: 2px; margin-bottom: 10px; }
.contact-card p { color: rgba(255, 255, 255, .8); font-size: 14px; line-height: 1.8; word-break: break-all; }

/* ---------------- 页脚 ---------------- */
.footer { background: #04203f; color: rgba(255, 255, 255, .72); }

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.3fr;
  gap: 50px;
  padding: 70px 0 50px;
}

.footer-logo .logo-img { filter: brightness(0) invert(1); }

.footer-brand p { margin-top: 20px; font-size: 14px; line-height: 1.9; }

.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 17px;
  letter-spacing: 2px;
  margin-bottom: 20px;
}

.footer-links a {
  display: block;
  font-size: 14px;
  padding: 5px 0;
  transition: color .3s, transform .3s;
}

.footer-links a:hover { color: var(--c-accent); transform: translateX(5px); }

.footer-contact p { font-size: 14px; padding: 4px 0; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
}

.footer-bottom a {
  color: inherit;
  text-decoration: none;
  transition: color .2s;
}

.footer-bottom a:hover {
  color: rgba(255, 255, 255, .9);
}

/* ---------------- 返回顶部（右侧悬浮，参考利安隆） ---------------- */
.back-top {
  position: fixed;
  right: calc(26px + var(--sbw-fix, 0px)); bottom: 30px;
  width: 50px; height: 50px;
  padding: 0;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: #fff;
  cursor: pointer;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: transform .35s, opacity .35s, visibility .35s, box-shadow .3s;
  z-index: 998;
  box-shadow: 0 8px 22px rgba(8, 58, 116, .42);
}

.back-top.show { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { box-shadow: 0 10px 28px rgba(0, 178, 184, .55); }
.back-top svg { width: 22px; height: 22px; fill: #fff; }

/* ---------------- 滚动进入动画 ---------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity .8s ease, transform .8s ease;
}

[data-reveal].revealed { opacity: 1; transform: translateY(0); }

/* ---------------- 响应式 ---------------- */
/* 头部逐级收敛：先收字号与 CTA → 再隐英文副标题与 CTA → 最后转抽屉菜单 */
@media (max-width: 1340px) {
  .header-inner { gap: 16px; }
  .nav-link,
  [lang="en"] .nav-link { padding: 0 14px; }
  .nav-main { font-size: 15.5px; letter-spacing: 1.2px; }
  [lang="en"] .nav-main { font-size: 14.5px; letter-spacing: .4px; }
  .nav-sub { font-size: 9px; letter-spacing: 1.1px; }
  .header .logo-img { height: 44px; }
  .logo-name { font-size: 16px; }
  [lang="en"] .logo-name { font-size: 12px; }
  .logo-sub { font-size: 9.5px; }
  .btn-header { padding: 10px 20px; font-size: 13.5px; letter-spacing: 1.4px; }
}

@media (max-width: 1120px) {
  .nav-sub { display: none; }
  .logo-sub { display: none; }
  .nav-link,
  [lang="en"] .nav-link { padding: 0 12px; }
  .btn-header { display: none; }
}

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

@media (max-width: 900px) {
  :root { --header-h: 66px; }
  .header-inner { gap: 10px; }
  .header .logo-img { height: 40px; }

  .nav {
    position: fixed;
    top: var(--header-h); right: 0;
    flex-direction: column;
    height: auto;
    width: 240px;
    background: #fff;
    box-shadow: -8px 12px 30px rgba(6, 42, 84, .15);
    border-radius: 0 0 0 14px;
    padding: 10px 0 14px;
    transform: translateX(100%);
    transition: transform .35s cubic-bezier(.4, 0, .2, 1);
    overflow: hidden;
  }

  .nav.open { transform: translateX(0); }

  .nav-link {
    height: auto;
    flex-direction: row;
    justify-content: flex-start;
    padding: 13px 26px;
    color: var(--c-navy) !important;
  }

  .nav-link::before { display: none; }
  .nav-link:hover .nav-main { transform: none; }

  /* 抽屉内指示条改为左侧竖条 */
  .nav-link::after {
    left: 0; right: auto; top: 50%; bottom: auto;
    width: 3px; height: 20px;
    margin: -10px 0 0 0;
    box-shadow: none;
    transform: scaleY(0);
  }

  .nav-link:hover::after,
  .nav-link.active::after { transform: scaleY(1); }

  .nav-link:hover,
  .nav-link.active { color: var(--c-primary) !important; }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
  }

  .nav-toggle span {
    width: 24px; height: 2px;
    border-radius: 2px;
    background: #fff;
    transition: background .35s;
  }

  .header.scrolled .nav-toggle span { background: var(--c-navy); }

  .about-body { grid-template-columns: 1fr; gap: 44px; }
  .about-badge { right: 12px; bottom: -20px; }
  .news-list { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
  .footer-inner { grid-template-columns: 1fr; gap: 36px; }
  .strength-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  :root { --header-h: 60px; }
  .header-inner { gap: 8px; }
  .header .logo-img { height: 34px; }
  .logo-text { display: none; }
  .lang-opt { width: 44px; font-size: 12px; }
  .lang-seg::before { width: 44px; }
  .lang-seg.en::before { transform: translateX(44px); }
  .section { padding: 70px 0; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .strength-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-arrow { display: none; }
  .news-item { flex-direction: row; padding: 20px; gap: 16px; }
}

/* ============================================================
   二级页面样式
   ============================================================ */

/* ---------------- 页头 Banner ---------------- */
.page-banner {
  padding: calc(var(--header-h) + 84px) 0 74px;
  text-align: center;
  color: #fff;
  background:
    radial-gradient(900px 400px at 90% -20%, rgba(0, 178, 184, .3), transparent 60%),
    linear-gradient(140deg, #0a3f7e, var(--c-navy));
}

.page-banner.slim { padding: calc(var(--header-h) + 56px) 0 50px; }

.page-banner h1 {
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: 4px;
}

.pb-en {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 5px;
  color: rgba(255, 255, 255, .65);
  text-transform: uppercase;
}

.breadcrumb {
  margin-top: 18px;
  font-size: 13px;
  color: rgba(255, 255, 255, .7);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.breadcrumb a { color: rgba(255, 255, 255, .85); transition: color .3s; }
.breadcrumb a:hover { color: var(--c-accent); }
.breadcrumb em { font-style: normal; color: var(--c-accent); }

/* ---------------- 首页业务板块卡片 ---------------- */
.segment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.segment-card {
  position: relative;
  display: block;
  padding: 34px 28px 26px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--c-border);
  transition: transform .35s, box-shadow .35s, border-color .35s;
  overflow: hidden;
}

.segment-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s;
}

.segment-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.segment-card:hover::before { transform: scaleX(1); }

.segment-icon {
  width: 60px; height: 60px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(10, 84, 165, .12), rgba(0, 178, 184, .16));
  margin-bottom: 18px;
}

.segment-icon svg { width: 32px; height: 32px; fill: var(--c-primary); }

.segment-card h3 { font-size: 19px; color: var(--c-navy); letter-spacing: 1px; }
.segment-card .seg-en {
  margin: 4px 0 12px;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--c-accent);
}

.segment-card p {
  font-size: 13px;
  color: var(--c-text-light);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.segment-more {
  display: inline-block;
  margin-top: 16px;
  font-size: 13px;
  color: var(--c-primary);
  letter-spacing: 1px;
}

/* ---------------- 关于页：公司简介 ---------------- */
.about-full {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 48px;
  align-items: start;
}

/* 文本较长时，图片顶端对齐并随滚动吸附，始终与正文并排可见 */
.about-full-img {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.about-full-img img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.about-full-text p {
  margin-bottom: 14px;
  font-size: 15px;
  color: var(--c-text-light);
  text-align: justify;
}

.qual-badges {
  margin-top: 46px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.qual-badges span {
  padding: 9px 22px;
  border-radius: 40px;
  background: var(--c-bg-light);
  border: 1px solid var(--c-border);
  font-size: 13px;
  color: var(--c-primary);
  letter-spacing: 1px;
}

/* ---------------- 企业实力页：供应链与物流优势 ---------------- */
.supply-section { background: #fff; }

.supply-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr 1fr;
  gap: 24px;
  align-items: stretch;
}

.supply-node {
  padding: 36px 26px;
  border-radius: var(--radius);
  background: var(--c-bg-light);
  border: 1px solid var(--c-border);
  text-align: center;
  transition: transform .35s, box-shadow .35s;
}

.supply-node:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }

.supply-node-icon {
  width: 66px; height: 66px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  box-shadow: 0 8px 22px rgba(10, 84, 165, .28);
}

.supply-node-icon svg { width: 34px; height: 34px; fill: #fff; }

.supply-node h3 { font-size: 18px; color: var(--c-navy); letter-spacing: 1px; margin-bottom: 10px; }
.supply-node p { font-size: 13.5px; color: var(--c-text-light); line-height: 1.85; }

.supply-chain {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 34px 22px;
  border-radius: var(--radius);
  background:
    radial-gradient(600px 240px at 50% -20%, rgba(0, 178, 184, .28), transparent 60%),
    linear-gradient(160deg, var(--c-navy), #0a3f7e);
}

.supply-chain-label {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 3px;
  color: #fff;
  text-align: center;
}

.supply-steps {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 240px;
}

.supply-steps em {
  position: relative;
  font-style: normal;
  text-align: center;
  padding: 10px 0;
  margin: 6px 0;
  border-radius: 40px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .16);
  color: #fff;
  font-size: 14px;
  letter-spacing: 3px;
}

.supply-steps em:not(:last-child)::after {
  content: "\2193";
  position: absolute;
  left: 50%;
  bottom: -13px;
  transform: translateX(-50%);
  color: var(--c-accent);
  font-size: 13px;
  line-height: 1;
}

@media (max-width: 900px) {
  .supply-grid { grid-template-columns: 1fr; }
}

/* ---------------- 关于页：业务板块详情 ---------------- */
.seg-section { background: var(--c-bg-light); }

.segment-detail-list { display: flex; flex-direction: column; gap: 30px; }

.segment-detail {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 44px;
  align-items: center;
  padding: 40px;
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
  scroll-margin-top: calc(var(--header-h) + 20px);
  transition: box-shadow .4s;
}

.segment-detail.reverse { grid-template-columns: 1fr 300px; }
.segment-detail.reverse .seg-visual { order: 2; }

.segment-detail.seg-flash {
  box-shadow: 0 0 0 3px var(--c-accent), var(--shadow-hover);
}

.seg-visual {
  position: relative;
  height: 220px;
  border-radius: var(--radius);
  background:
    radial-gradient(300px 160px at 80% 10%, rgba(0, 178, 184, .25), transparent 65%),
    linear-gradient(140deg, #0a3f7e, var(--c-navy));
  display: flex;
  align-items: center;
  justify-content: center;
}

.seg-visual-icon svg { width: 84px; height: 84px; fill: rgba(255, 255, 255, .92); }

/* 图标视觉归一化：各 SVG 图形在 viewBox 内实际占比不同，
   以第一个图标(flask)的视觉大小为基准，按图形 bbox 反推渲染尺寸 */
.seg-visual-icon[data-icon="lab"] svg { width: 76px; height: 76px; }
.seg-visual-icon[data-icon="drop"] svg { width: 69px; height: 69px; }
.seg-visual-icon[data-icon="port"] svg { width: 64px; height: 64px; }
.seg-visual-icon[data-icon="chain"] svg { width: 88px; height: 88px; }
.seg-visual-icon[data-icon="chip"] svg { width: 74px; height: 74px; }

.segment-icon[data-icon="lab"] svg { width: 29px; height: 29px; }
.segment-icon[data-icon="drop"] svg { width: 26px; height: 26px; }
.segment-icon[data-icon="port"] svg { width: 25px; height: 25px; }
.segment-icon[data-icon="chain"] svg { width: 33px; height: 33px; }
.segment-icon[data-icon="chip"] svg { width: 28px; height: 28px; }

.seg-index {
  position: absolute;
  right: 18px; bottom: 8px;
  font-size: 44px;
  font-weight: 800;
  color: rgba(255, 255, 255, .16);
  letter-spacing: 2px;
}

.seg-body h3 { font-size: 23px; color: var(--c-navy); letter-spacing: 2px; }
.seg-body .seg-en { margin: 6px 0 14px; font-size: 12px; letter-spacing: 3px; color: var(--c-accent); }
.seg-body .seg-desc { font-size: 14px; color: var(--c-text-light); text-align: justify; }

.seg-points {
  margin-top: 18px;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.seg-points li {
  padding: 7px 18px;
  border-radius: 40px;
  background: rgba(10, 84, 165, .08);
  color: var(--c-primary);
  font-size: 13px;
}

/* ---------------- 关于页：企业文化 ---------------- */
.culture-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}

.culture-card {
  padding: 46px 30px;
  border-radius: var(--radius);
  text-align: center;
  color: #fff;
  background:
    radial-gradient(400px 200px at 90% 0%, rgba(0, 178, 184, .35), transparent 65%),
    linear-gradient(140deg, var(--c-primary), var(--c-navy));
  box-shadow: var(--shadow);
}

.culture-card h3 { font-size: 20px; letter-spacing: 3px; }
.culture-card p { margin-top: 6px; font-size: 12px; letter-spacing: 3px; color: rgba(255, 255, 255, .6); }
.culture-card strong { display: block; margin-top: 22px; font-size: clamp(20px, 2.4vw, 28px); letter-spacing: 4px; color: #fff; }

/* ---------------- 产品列表页 ---------------- */
.plist-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 36px;
  align-items: start;
}

.plist-side {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 22px;
}

.plist-side h3 {
  font-size: 17px;
  color: var(--c-navy);
  letter-spacing: 2px;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--c-border);
}

.side-cat {
  display: block;
  width: 100%;
  text-align: left;
  padding: 11px 16px;
  margin-bottom: 6px;
  border: none;
  border-radius: 8px;
  background: transparent;
  font-size: 15px;
  color: var(--c-text);
  cursor: pointer;
  transition: all .25s;
}

.side-cat:hover { background: var(--c-bg-light); color: var(--c-primary); }

.side-cat.active {
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: #fff;
}

.plist-desc { margin-bottom: 26px; }
.plist-desc h3 { font-size: 21px; color: var(--c-navy); }
.plist-desc p { margin-top: 6px; font-size: 14px; color: var(--c-text-light); }

.product-grid.wide { grid-template-columns: repeat(3, 1fr); }

.thumb { position: relative; }

.thumb-tag {
  position: absolute;
  top: 10px; left: 10px;
  padding: 3px 12px;
  border-radius: 20px;
  background: rgba(10, 84, 165, .9);
  color: #fff;
  font-size: 11px;
  letter-spacing: 1px;
}

/* ---------------- 产品详情页 ---------------- */
.detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.detail-head h2 { font-size: 30px; color: var(--c-navy); letter-spacing: 1px; }
.detail-en { margin-top: 6px; font-size: 14px; letter-spacing: 2px; color: var(--c-accent); }

.detail-tags { margin-top: 16px; display: flex; gap: 10px; flex-wrap: wrap; }

.tag {
  padding: 5px 16px;
  border-radius: 20px;
  background: var(--c-primary);
  color: #fff;
  font-size: 12px;
  letter-spacing: 1px;
}

.tag.light { background: var(--c-bg-light); color: var(--c-primary); border: 1px solid var(--c-border); }

.detail-block { margin-top: 34px; }

.detail-block h4 {
  font-size: 17px;
  color: var(--c-navy);
  letter-spacing: 2px;
  padding-left: 12px;
  border-left: 4px solid var(--c-accent);
  margin-bottom: 16px;
}

.detail-block p { font-size: 15px; color: var(--c-text-light); text-align: justify; line-height: 1.9; }

/* 分子结构式 */
.structure-fig {
  margin: 0;
  padding: 26px 24px;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  text-align: center;
}

.structure-fig img {
  display: inline-block;
  max-width: 100%;
  height: auto;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.spec-table th, .spec-table td {
  border: 1px solid var(--c-border);
  padding: 11px 18px;
  text-align: left;
}

.spec-table th { width: 180px; background: var(--c-bg-light); color: var(--c-navy); font-weight: 600; }
.spec-table td { color: var(--c-text-light); }

.app-tags { display: flex; flex-wrap: wrap; gap: 10px; }

.app-tags span {
  padding: 7px 20px;
  border-radius: 40px;
  background: rgba(0, 178, 184, .1);
  color: #00838a;
  font-size: 13px;
}

.pager {
  margin-top: 46px;
  padding-top: 24px;
  border-top: 1px solid var(--c-border);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 14px;
}

.pager a { color: var(--c-primary); transition: color .3s; }
.pager a:hover { color: var(--c-accent); }
.pager .pager-back { color: var(--c-text-light); }

.detail-side { display: flex; flex-direction: column; gap: 22px; position: sticky; top: calc(var(--header-h) + 20px); }

.side-card {
  padding: 28px 24px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--c-border);
  text-align: center;
}

.side-card h4 { font-size: 16px; color: var(--c-navy); letter-spacing: 1px; margin-bottom: 12px; text-align: left; }

.side-thumb {
  width: 90px; height: 90px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, #eef4fb, #e4f4f5);
  display: flex;
  align-items: center;
  justify-content: center;
}

.side-thumb svg { width: 44px; height: 44px; fill: var(--c-primary); }

.side-card > p { font-size: 13px; color: var(--c-text-light); }

.related-list { list-style: none; }

.related-list a {
  display: flex;
  justify-content: space-between;
  padding: 10px 4px;
  font-size: 14px;
  color: var(--c-text);
  border-bottom: 1px dashed var(--c-border);
  transition: color .3s;
}

.related-list li:last-child a { border-bottom: none; }
.related-list a:hover { color: var(--c-primary); }
.related-list a span { color: var(--c-accent); }

.back-link { font-size: 14px; color: var(--c-primary); }
.back-link:hover { color: var(--c-accent); }

/* ---------------- 新闻列表页 ---------------- */
.news-page-list { display: flex; flex-direction: column; gap: 20px; }

.news-page-item {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 30px 34px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--c-border);
  transition: all .35s;
}

.news-page-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.news-page-item .news-body h3 { white-space: normal; font-size: 19px; }
.news-page-item .news-body p { -webkit-line-clamp: 2; }

/* ---------------- 新闻详情页 ---------------- */
.news-article { max-width: 820px; margin: 0 auto; }

.article-head { text-align: center; padding-bottom: 28px; border-bottom: 1px solid var(--c-border); }
.article-head h2 { font-size: clamp(22px, 2.6vw, 30px); color: var(--c-navy); }

.article-meta {
  margin-top: 14px;
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 13px;
  color: var(--c-text-light);
}

.article-body { padding: 34px 0; }

.article-body p {
  margin-bottom: 18px;
  font-size: 15.5px;
  line-height: 2;
  color: var(--c-text);
  text-align: justify;
}

/* ---------------- 联系页：联系人 ---------------- */
.person-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.person-card {
  padding: 34px 24px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--c-border);
  text-align: center;
  transition: transform .35s, box-shadow .35s;
}

.person-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }

.person-avatar {
  width: 72px; height: 72px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  display: flex;
  align-items: center;
  justify-content: center;
}

.person-avatar svg { width: 34px; height: 34px; fill: #fff; }

.person-card h3 { font-size: 18px; color: var(--c-navy); }
.person-dept { margin: 4px 0 16px; font-size: 13px; color: var(--c-accent); letter-spacing: 1px; }

.person-info { list-style: none; text-align: left; }

.person-info li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 7px 0;
  font-size: 13px;
  color: var(--c-text-light);
  word-break: break-all;
}

.person-info svg { flex: none; width: 16px; height: 16px; margin-top: 3px; fill: var(--c-primary); }
.person-info a { color: var(--c-text-light); }
.person-info a:hover { color: var(--c-primary); }

/* ---------------- 联系页：地址 ---------------- */
.addr-section { background: var(--c-bg-light); }

.addr-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.addr-card {
  padding: 30px 26px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--c-border);
  transition: transform .35s, box-shadow .35s;
}

.addr-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }

.addr-head { display: flex; align-items: center; gap: 10px; }
.addr-head svg { width: 22px; height: 22px; fill: var(--c-accent); }
.addr-head h3 { flex: 1; font-size: 17px; color: var(--c-navy); }

.addr-tag {
  padding: 3px 12px;
  border-radius: 20px;
  background: rgba(10, 84, 165, .08);
  color: var(--c-primary);
  font-size: 12px;
}

.addr-detail { margin-top: 14px; font-size: 14px; color: var(--c-text); }
.addr-note { margin-top: 8px; font-size: 13px; color: var(--c-text-light); }

/* ---------------- 联系页：在线留言 ---------------- */
.msg-form {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.msg-form label { display: flex; flex-direction: column; gap: 8px; font-size: 14px; color: var(--c-navy); }

.msg-form input, .msg-form textarea {
  padding: 12px 16px;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  color: var(--c-text);
  outline: none;
  transition: border-color .3s, box-shadow .3s;
  resize: vertical;
}

.msg-form input:focus, .msg-form textarea:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(0, 178, 184, .15);
}

.msg-form button { align-self: center; border: none; cursor: pointer; }

.form-tip { text-align: center; font-size: 13px; color: var(--c-text-light); }

/* 提交状态：默认灰 / 成功青 / 失败红 */
.form-tip.ok { color: var(--c-accent); }
.form-tip.err { color: #d64545; }
.form-tip.busy { color: var(--c-text-light); }

/* ---------------- 二级页响应式 ---------------- */
@media (max-width: 1100px) {
  .segment-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid.wide { grid-template-columns: repeat(2, 1fr); }
  .person-grid { grid-template-columns: repeat(2, 1fr); }
  .addr-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .about-full { grid-template-columns: 1fr; }
  .about-full-img { position: static; }
  .segment-detail { grid-template-columns: 1fr; gap: 24px; padding: 26px; }
  .segment-detail.reverse { grid-template-columns: 1fr; }
  .segment-detail.reverse .seg-visual { order: 0; }
  .seg-visual { height: 160px; }
  .culture-grid { grid-template-columns: 1fr; }
  .plist-layout { grid-template-columns: 1fr; }
  .plist-side { position: static; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
  .plist-side h3 { width: 100%; }
  .side-cat { width: auto; margin-bottom: 0; }
  .detail-layout { grid-template-columns: 1fr; }
  .detail-side { position: static; }
  .news-page-item { padding: 22px; gap: 18px; }
}

@media (max-width: 560px) {
  .segment-grid { grid-template-columns: 1fr; }
  .product-grid.wide { grid-template-columns: 1fr; }
  .person-grid { grid-template-columns: 1fr; }
  .addr-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .pager { flex-direction: column; }
}

/* ============================================================
   交互动效增强
   ============================================================ */

/* 1) Banner 背景 Ken Burns 呼吸缩放 */
.hero-slide {
  transition: opacity 1s ease, transform 1.2s ease;
}

.hero-slide.active { animation: kenBurns 5s ease-out forwards; }

@keyframes kenBurns {
  from { transform: scale(1); }
  to { transform: scale(1.08); }
}

/* 2) 首页 Banner 鼠标跟随光晕 */
.hero-glow {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(560px circle at var(--mx, 70%) var(--my, 40%), rgba(0, 178, 184, .16), transparent 65%);
  opacity: 0;
  transition: opacity .5s;
}

.hero:hover .hero-glow { opacity: 1; }

/* 3) 顶部滚动进度条 */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  z-index: 999;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  pointer-events: none;
}

/* 4) 板块分隔线进入时生长 */
.section-head .section-line { width: 0; transition: width .9s .25s ease; }
.section-head.revealed .section-line { width: 56px; }

/* 5) 二级页 Banner 文字入场 */
.page-banner h1,
.page-banner .pb-en,
.page-banner .breadcrumb {
  opacity: 0;
  transform: translateY(22px);
  animation: heroUp .8s forwards;
}

.page-banner .pb-en { animation-delay: .15s; }
.page-banner .breadcrumb { animation-delay: .3s; }

/* 6) 卡片扫光 */
.product-card { position: relative; }

.segment-card::after,
.product-card::after {
  content: "";
  position: absolute;
  top: 0; left: -70%;
  width: 45%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, .38), transparent);
  transform: skewX(-20deg);
  transition: left .7s ease;
  pointer-events: none;
}

.segment-card:hover::after,
.product-card:hover::after { left: 125%; }

/* 7) 图标微交互 */
.segment-icon svg,
.strength-icon svg {
  transition: transform .4s ease;
}

.segment-card:hover .segment-icon svg { transform: scale(1.15) rotate(-6deg); }
.strength-card:hover .strength-icon svg { transform: scale(1.15) rotate(6deg); }

/* 8) 数字卡片悬浮发光 */
.stat-item .stat-num { transition: text-shadow .4s; }
.stat-item:hover .stat-num { text-shadow: 0 0 26px rgba(0, 178, 184, .65); }

/* ============================================================
   视觉增强 v2 —— 微交互 / 层次 / 响应式 / 双语
   ============================================================ */

/* ---- 按钮涟漪反馈 ---- */
.btn-more, .btn-hero, .btn-header, .lang-opt, .side-cat, .product-tab {
  position: relative;
  overflow: hidden;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: var(--ripple, rgba(255, 255, 255, .5));
  transform: scale(0);
  opacity: .55;
  animation: ripple .65s ease-out forwards;
  pointer-events: none;
}

@keyframes ripple { to { transform: scale(2.8); opacity: 0; } }

.btn-more { --ripple: rgba(10, 84, 165, .22); }
.side-cat:not(.active), .product-tab:not(.active) { --ripple: rgba(0, 178, 184, .22); }

/* ---- 表单聚焦发光增强 ---- */
.msg-form label span { transition: color .3s; }
.msg-form label:focus-within span { color: var(--c-accent); }

/* ---- 表格 / 列表微交互 ---- */
.spec-table tr { transition: background .3s; }
.spec-table tr:hover td { background: rgba(0, 178, 184, .06); }

.related-list a { transition: color .3s, padding-left .3s; }
.related-list a:hover { padding-left: 10px; }

.side-cat { transition: background .3s, color .3s, transform .3s; }
.side-cat:hover { transform: translateX(4px); }

.product-tab { transition: border-color .3s, color .3s, transform .3s, box-shadow .3s; }
.product-tab:hover { transform: translateY(-2px); }

.app-tags span { transition: background .3s, color .3s, border-color .3s, transform .3s; }
.app-tags span:hover { transform: translateY(-2px); }

/* ---- 卡片边框呼应主色 ---- */
.product-card:hover { border-color: transparent; }
.person-card, .addr-card { transition: transform .35s, box-shadow .35s, border-color .35s; }
.person-card:hover, .addr-card:hover { border-color: transparent; }

/* ---- 双语导航防溢出断点已上移至「响应式」区（1200 / 1000 / 900 / 560px） ---- */

/* ---- 小屏细节 ---- */
@media (max-width: 560px) {
  .page-banner { padding: calc(var(--header-h) + 56px) 0 52px; }
  .hero-content h2 { letter-spacing: 1px; }
  .btn-hero { padding: 12px 34px; letter-spacing: 2px; }
  .news-date { width: 84px; padding-right: 14px; }
  .news-date strong { font-size: 22px; }
  .stat-label { letter-spacing: 1px; }
  .product-tab { padding: 9px 20px; font-size: 13px; }
  .back-top { right: calc(16px + var(--sbw-fix, 0px)); bottom: 18px; width: 44px; height: 44px; }
}

/* ---------------- 产品咨询弹窗 ---------------- */
.consult-mask {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(6, 42, 84, .55);
  backdrop-filter: blur(3px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, visibility .3s;
}

.consult-mask.open { opacity: 1; visibility: visible; }

.consult-dialog {
  position: relative;
  width: 100%;
  max-width: 460px;
  max-height: 90vh;
  overflow: auto;
  background: #fff;
  border-radius: 14px;
  padding: 34px 32px 30px;
  box-shadow: 0 24px 60px rgba(4, 24, 48, .35);
  transform: translateY(28px) scale(.96);
  transition: transform .35s ease;
}

.consult-mask.open .consult-dialog { transform: none; }

.consult-close {
  position: absolute;
  top: 10px; right: 14px;
  border: none;
  background: none;
  font-size: 26px;
  line-height: 1;
  color: var(--c-text-light);
  cursor: pointer;
  transition: color .3s, transform .3s;
}

.consult-close:hover { color: var(--c-primary); transform: rotate(90deg); }

.consult-title { margin: 0; font-size: 22px; letter-spacing: 3px; color: var(--c-navy); text-align: center; }
.consult-sub { margin: 10px 0 0; font-size: 13px; color: var(--c-text-light); text-align: center; }

.consult-product {
  margin: 16px 0 0;
  padding: 9px 14px;
  font-size: 13px;
  color: var(--c-primary);
  background: var(--c-bg-light);
  border-radius: 8px;
  text-align: center;
}

#consultForm { margin-top: 20px; display: flex; flex-direction: column; gap: 14px; }

#consultForm label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--c-text);
}

#consultForm label span { transition: color .3s; }
#consultForm label:focus-within span { color: var(--c-accent); }

#consultForm input,
#consultForm textarea {
  border: 1px solid var(--c-border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  color: var(--c-text);
  transition: border-color .3s, box-shadow .3s;
  resize: vertical;
}

#consultForm input:focus,
#consultForm textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(0, 178, 184, .15);
}

.consult-tip { margin: 0; font-size: 13px; min-height: 16px; }
.consult-tip.ok { color: var(--c-accent); }
.consult-tip.err { color: #d64545; }
.consult-tip.busy { color: var(--c-text-light); }

/* 弹窗内双列字段：公司名称 / 称呼，联系电话 / 电子邮箱 */
.consult-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

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

.consult-submit {
  align-self: center;
  margin-top: 2px;
  font-family: inherit;
  cursor: pointer;
  background: var(--c-primary);
  color: #fff;
}

.consult-submit:hover { background: var(--c-accent); border-color: var(--c-accent); color: #fff; }

.consult-ok { text-align: center; padding: 26px 0 14px; }

.consult-ok span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px; height: 58px;
  border-radius: 50%;
  background: rgba(0, 178, 184, .12);
  color: var(--c-accent);
  font-size: 30px;
}

.consult-ok p { margin: 14px 0 0; font-size: 15px; color: var(--c-text); }