/* ============================================================
   乐融建材 · 门户网站 全局样式
   设计风格：工业蓝 + 琥珀橙，现代简洁，纯静态无外部依赖
   ============================================================ */

:root {
  --c-primary: #0e3a5d;        /* 主色·深工业蓝 */
  --c-primary-2: #155a8a;      /* 主色亮阶 */
  --c-accent: #f5a623;         /* 强调色·琥珀橙 */
  --c-accent-2: #ffc757;       /* 强调色亮阶 */
  --c-dark: #10222f;           /* 深底 */
  --c-text: #3b4a55;           /* 正文 */
  --c-text-light: #7c8b96;     /* 辅助文字 */
  --c-bg: #ffffff;             /* 页面底色 */
  --c-bg-soft: #f4f7f9;        /* 浅灰蓝底 */
  --c-line: #e3eaf0;           /* 分割线 */
  --shadow-sm: 0 2px 10px rgba(14, 58, 93, .08);
  --shadow-md: 0 8px 28px rgba(14, 58, 93, .14);
  --radius: 10px;
  --radius-lg: 16px;
  --max-w: 1200px;
  --header-h: 76px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

/* ---------------- 通用标题组件 ---------------- */
.sec { padding: 88px 0; }
.sec-soft { background: var(--c-bg-soft); }

.sec-head { text-align: center; margin-bottom: 56px; }
.sec-head .en {
  display: block;
  font-size: 13px;
  letter-spacing: .45em;
  text-transform: uppercase;
  color: var(--c-accent);
  font-weight: 700;
  margin-bottom: 8px;
}
.sec-head h2 {
  font-size: 32px;
  color: var(--c-primary);
  font-weight: 700;
  letter-spacing: .05em;
}
.sec-head .bar {
  width: 56px; height: 4px;
  margin: 18px auto 0;
  background: linear-gradient(90deg, var(--c-accent), var(--c-accent-2));
  border-radius: 2px;
}
.sec-head p.sub {
  margin-top: 14px;
  color: var(--c-text-light);
  font-size: 15px;
}

/* ---------------- 顶部信息条 ---------------- */
.topbar {
  background: var(--c-dark);
  color: rgba(255, 255, 255, .75);
  font-size: 13px;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 36px;
}
.topbar a:hover { color: var(--c-accent-2); }
.topbar .t-left span { margin-right: 26px; }

/* ---------------- 导航 ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--c-line);
  transition: box-shadow .3s;
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }

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

.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo {
  width: 46px; height: 46px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
  display: flex; align-items: center; justify-content: center;
  color: var(--c-accent);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -.03em;
  flex-shrink: 0;
}
.brand .name { line-height: 1.25; }
.brand .name b {
  display: block;
  font-size: 21px;
  color: var(--c-primary);
  letter-spacing: .06em;
}
.brand .name span {
  font-size: 11px;
  color: var(--c-text-light);
  letter-spacing: .18em;
  text-transform: uppercase;
}

.nav { display: flex; gap: 4px; }
.nav > li { position: relative; }
.nav > li > a {
  display: block;
  padding: 0 18px;
  line-height: var(--header-h);
  font-size: 16px;
  color: var(--c-primary);
  font-weight: 500;
  transition: color .2s;
}
.nav > li > a:hover,
.nav > li.active > a { color: var(--c-accent); }

.nav > li > a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0;
  width: 0; height: 3px;
  background: var(--c-accent);
  border-radius: 2px 2px 0 0;
  transform: translateX(-50%);
  transition: width .25s;
}
.nav > li:hover > a::after,
.nav > li.active > a::after { width: 28px; }

/* 下拉菜单 */
.nav .dropdown {
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  min-width: 156px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: all .25s;
  padding: 8px 0;
  z-index: 99;
}
.nav > li:hover .dropdown {
  opacity: 1; visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav .dropdown a {
  display: block;
  padding: 9px 22px;
  font-size: 14px;
  color: var(--c-text);
  white-space: nowrap;
}
.nav .dropdown a:hover {
  color: var(--c-accent);
  background: var(--c-bg-soft);
}

.nav-toggle { display: none; }

/* ---------------- Hero 轮播 ---------------- */
.hero {
  position: relative;
  height: 620px;
  overflow: hidden;
  background: var(--c-dark);
}
.hero .slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  transition: opacity .9s ease;
  background-size: cover;
  background-position: center;
}
.hero .slide.active { opacity: 1; }

/* 每张幻灯片的 SVG 场景底纹 */
.hero .slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(9, 30, 48, .92) 0%, rgba(11, 44, 70, .78) 42%, rgba(11, 44, 70, .25) 100%),
    repeating-linear-gradient(90deg, transparent 0 118px, rgba(255, 255, 255, .045) 118px 120px),
    repeating-linear-gradient(0deg, transparent 0 78px, rgba(255, 255, 255, .045) 78px 80px);
}

.hero .slide-inner { position: relative; z-index: 2; }
.hero .tag {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid rgba(245, 166, 35, .6);
  color: var(--c-accent-2);
  font-size: 14px;
  letter-spacing: .2em;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 {
  color: #fff;
  font-size: 52px;
  line-height: 1.28;
  font-weight: 700;
  letter-spacing: .04em;
  max-width: 640px;
}
.hero h1 em {
  font-style: normal;
  color: var(--c-accent);
}
.hero p.desc {
  color: rgba(255, 255, 255, .82);
  font-size: 17px;
  margin: 20px 0 36px;
  max-width: 560px;
}
.hero .actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 34px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: all .25s;
}
.btn-accent {
  background: linear-gradient(135deg, var(--c-accent), #ff8a1e);
  color: #fff;
  box-shadow: 0 6px 20px rgba(245, 166, 35, .4);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(245, 166, 35, .5); }
.btn-ghost {
  border: 1px solid rgba(255, 255, 255, .55);
  color: #fff;
}
.btn-ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }
.btn-primary {
  background: var(--c-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--c-primary-2); }

/* hero 右侧装饰图 */
.hero-art {
  position: absolute;
  right: 4%;
  bottom: 0;
  z-index: 1;
  opacity: .9;
  pointer-events: none;
}

/* 轮播控制 */
.hero-dots {
  position: absolute;
  left: 50%; bottom: 28px;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 5;
}
.hero-dots button {
  width: 34px; height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, .35);
  transition: background .3s;
}
.hero-dots button.active { background: var(--c-accent); }

/* ---------------- 页面小 Hero（内页横幅） ---------------- */
.page-banner {
  height: 300px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(100deg, rgba(9, 30, 48, .9), rgba(11, 44, 70, .68)),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, .03) 0 24px, transparent 24px 48px),
    var(--c-primary);
}
.page-banner .crumbs {
  color: rgba(255, 255, 255, .65);
  font-size: 13px;
  margin-bottom: 10px;
}
.page-banner .crumbs a:hover { color: var(--c-accent-2); }
.page-banner h1 {
  color: #fff;
  font-size: 38px;
  letter-spacing: .06em;
  font-weight: 700;
}
.page-banner .en-sub {
  color: var(--c-accent);
  letter-spacing: .4em;
  font-size: 13px;
  text-transform: uppercase;
  margin-top: 6px;
}

/* ---------------- 关于我们（首页区块） ---------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-visual { position: relative; }
.about-visual .frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.about-visual .exp {
  position: absolute;
  right: -18px; bottom: -22px;
  background: var(--c-accent);
  color: #fff;
  border-radius: var(--radius);
  padding: 18px 26px;
  text-align: center;
  box-shadow: var(--shadow-md);
}
.about-visual .exp b { font-size: 40px; display: block; line-height: 1.1; }
.about-visual .exp span { font-size: 13px; letter-spacing: .1em; }

.about-text h2 {
  font-size: 30px;
  color: var(--c-primary);
  margin-bottom: 6px;
}
.about-text .en-line {
  color: var(--c-text-light);
  letter-spacing: .3em;
  font-size: 12px;
  text-transform: uppercase;
  margin-bottom: 22px;
}
.about-text p { margin-bottom: 14px; }
.about-points { margin: 22px 0 30px; display: grid; gap: 12px; }
.about-points li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 15px;
}
.about-points .ico {
  width: 24px; height: 24px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--c-accent);
}

/* ---------------- 产品卡片 ---------------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all .3s;
  border: 1px solid var(--c-line);
}
.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
}
.product-card .thumb {
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.product-card .thumb .num {
  position: absolute;
  top: 12px; left: 14px;
  font-size: 13px;
  font-weight: 700;
  color: rgba(255, 255, 255, .85);
  background: rgba(14, 58, 93, .55);
  padding: 2px 10px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.product-card .body { padding: 22px 20px 26px; }
.product-card h3 {
  font-size: 18px;
  color: var(--c-primary);
  margin-bottom: 8px;
}
.product-card p {
  font-size: 13.5px;
  color: var(--c-text-light);
  min-height: 66px;
}
.product-card .more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--c-accent);
}
.product-card .more:hover { gap: 10px; }
.product-card .more { transition: gap .2s; }

/* 卡片配色 */
.thumb-t1 { background: linear-gradient(140deg, #12405f, #1d6aa0); }
.thumb-t2 { background: linear-gradient(140deg, #6b4a13, #c98a2e); }
.thumb-t3 { background: linear-gradient(140deg, #14424a, #1e7d82); }
.thumb-t4 { background: linear-gradient(140deg, #3c3358, #6d5a9e); }
.thumb-t5 { background: linear-gradient(140deg, #59322c, #a35a44); }
.thumb-t6 { background: linear-gradient(140deg, #2c4a2f, #4e8a4c); }

/* 实拍图适配 */
.frame img { width: 100%; display: block; }
.about-visual .frame img { height: 380px; object-fit: cover; }
.pd-visual .frame img { height: 400px; object-fit: cover; }
.product-card .thumb img,
.case-card .cover img,
.news-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
@media (max-width: 768px) {
  .about-visual .frame img { height: 260px; }
  .pd-visual .frame img { height: 280px; }
}

/* ---------------- 核心优势 ---------------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.adv-item {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 34px 26px;
  border: 1px solid var(--c-line);
  position: relative;
  overflow: hidden;
  transition: all .3s;
}
.adv-item::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--c-accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s;
}
.adv-item:hover::before { transform: scaleX(1); }
.adv-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.adv-item .ico-box {
  width: 58px; height: 58px;
  border-radius: 14px;
  background: var(--c-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--c-primary-2);
  transition: all .3s;
}
.adv-item:hover .ico-box {
  background: linear-gradient(135deg, var(--c-accent), #ff8a1e);
  color: #fff;
}
.adv-item h3 { font-size: 18px; color: var(--c-primary); margin-bottom: 10px; }
.adv-item p { font-size: 13.5px; color: var(--c-text-light); }

/* ---------------- 数据统计 ---------------- */
.stats-band {
  background:
    linear-gradient(rgba(10, 36, 58, .93), rgba(10, 36, 58, .93)),
    repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 2px, transparent 2px 90px);
  color: #fff;
  padding: 64px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stats-grid b {
  font-size: 46px;
  font-weight: 800;
  color: var(--c-accent);
  display: block;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.stats-grid b i { font-style: normal; font-size: 24px; margin-left: 2px; }
.stats-grid span { color: rgba(255, 255, 255, .75); font-size: 15px; letter-spacing: .1em; }

/* ---------------- 工程案例 ---------------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.case-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all .3s;
  background: #fff;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.case-card .cover { height: 230px; position: relative; }
.case-card .cat-badge {
  position: absolute;
  top: 14px; left: 14px;
  background: rgba(14, 58, 93, .8);
  color: #fff;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.case-card .info {
  padding: 18px 20px 22px;
  border: 1px solid var(--c-line);
  border-top: none;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}
.case-card h3 { font-size: 16.5px; color: var(--c-primary); margin-bottom: 4px; }
.case-card .meta { font-size: 13px; color: var(--c-text-light); }

/* ---------------- 服务流程 ---------------- */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  position: relative;
}
.flow-step {
  text-align: center;
  padding: 30px 14px 26px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--c-line);
  position: relative;
  z-index: 1;
  transition: all .3s;
}
.flow-step:hover { border-color: var(--c-accent); transform: translateY(-4px); }
.flow-step .step-no {
  width: 44px; height: 44px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
  color: var(--c-accent-2);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.flow-step h3 { font-size: 16px; color: var(--c-primary); margin-bottom: 6px; }
.flow-step p { font-size: 12.5px; color: var(--c-text-light); }
.flow-grid::before {
  content: "";
  position: absolute;
  top: 52px; left: 9%; right: 9%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--c-accent) 0 10px, transparent 10px 18px);
  z-index: 0;
  opacity: .55;
}

/* ---------------- 新闻 ---------------- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.news-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .3s;
  display: flex;
  flex-direction: column;
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-5px); }
.news-card .cover { height: 170px; }
.news-card .body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.news-card .date {
  font-size: 13px;
  color: var(--c-text-light);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.news-card .date::before {
  content: "";
  width: 18px; height: 2px;
  background: var(--c-accent);
}
.news-card h3 {
  font-size: 16.5px;
  color: var(--c-primary);
  margin-bottom: 8px;
  line-height: 1.5;
}
.news-card h3:hover { color: var(--c-accent); }
.news-card p { font-size: 13.5px; color: var(--c-text-light); flex: 1; }

/* 新闻列表页 */
.news-list { display: grid; gap: 20px; }
.news-row {
  display: flex;
  gap: 26px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: all .3s;
  align-items: center;
}
.news-row:hover { box-shadow: var(--shadow-md); border-color: transparent; }
.news-row .date-box {
  text-align: center;
  background: var(--c-bg-soft);
  border-radius: var(--radius);
  padding: 12px 18px;
  flex-shrink: 0;
}
.news-row .date-box b { font-size: 26px; color: var(--c-primary); display: block; line-height: 1.2; }
.news-row .date-box span { font-size: 12px; color: var(--c-text-light); }
.news-row h3 { font-size: 18px; color: var(--c-primary); margin-bottom: 6px; }
.news-row h3:hover { color: var(--c-accent); }
.news-row p { font-size: 14px; color: var(--c-text-light); }
.news-row .tag-line { font-size: 12px; color: var(--c-accent); margin-top: 8px; }
.news-row h3 a { color: inherit; text-decoration: none; }
.news-row h3 a:hover { color: var(--c-accent); }

/* ---------------- 文章详情页 ---------------- */
.article-page { max-width: 860px; }
.article-meta {
  font-size: 13px;
  color: var(--c-text-light);
  border-bottom: 1px solid var(--c-line);
  padding-bottom: 16px;
  margin-bottom: 28px;
}
.article-page h2 {
  font-size: 22px;
  color: var(--c-primary);
  margin: 34px 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--c-accent);
  line-height: 1.4;
}
.article-page h2:first-of-type { margin-top: 4px; }
.article-page p {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--c-text);
  margin-bottom: 14px;
}
.article-page ul,
.article-page ol {
  margin: 0 0 16px 6px;
  padding-left: 20px;
}
.article-page li {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--c-text);
  margin-bottom: 6px;
}
.article-page a { color: var(--c-accent); }
.article-back {
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid var(--c-line);
}
.article-back a {
  font-size: 14px;
  color: var(--c-primary);
  text-decoration: none;
}
.article-back a:hover { color: var(--c-accent); }

/* ---------------- CTA 横幅 ---------------- */
.cta-band {
  background: linear-gradient(120deg, var(--c-primary) 0%, var(--c-primary-2) 100%);
  border-radius: var(--radius-lg);
  color: #fff;
  padding: 48px 56px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  right: -60px; top: -60px;
  width: 240px; height: 240px;
  border: 40px solid rgba(255, 255, 255, .07);
  border-radius: 50%;
}
.cta-band h2 { font-size: 28px; margin-bottom: 8px; }
.cta-band p { color: rgba(255, 255, 255, .8); }
.cta-band .tel {
  text-align: right;
  position: relative;
}
.cta-band .tel span { font-size: 14px; color: rgba(255, 255, 255, .75); display: block; }
.cta-band .tel b {
  font-size: 34px;
  font-weight: 800;
  color: var(--c-accent-2);
  letter-spacing: .02em;
}

/* ---------------- 资质证书 ---------------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.cert-card {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  transition: all .3s;
}
.cert-card:hover { box-shadow: var(--shadow-md); transform: translateY(-5px); }
.cert-card .paper {
  height: 210px;
  background: #fdfdfb;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px;
  text-align: center;
}
.cert-card .paper .seal {
  width: 64px; height: 64px;
  border: 3px double #c0392b;
  border-radius: 50%;
  color: #c0392b;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .05em;
  transform: rotate(-12deg);
}
.cert-card .paper b { color: var(--c-primary); font-size: 14.5px; }
.cert-card .paper span { font-size: 12px; color: var(--c-text-light); }
.cert-card .cap {
  padding: 12px;
  text-align: center;
  font-size: 13.5px;
  color: var(--c-text);
  border-top: 1px solid var(--c-line);
}

/* ---------------- 联系我们 ---------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
  align-items: start;
}
.contact-info-card {
  background: var(--c-primary);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 38px;
}
.contact-info-card h2 { font-size: 26px; margin-bottom: 24px; color: #fff; }
.contact-info-card li {
  display: flex;
  gap: 14px;
  margin-bottom: 22px;
  align-items: flex-start;
}
.contact-info-card .ico {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent-2);
  flex-shrink: 0;
}
.contact-info-card b { display: block; font-size: 15px; margin-bottom: 2px; }
.contact-info-card span { font-size: 14px; color: rgba(255, 255, 255, .78); line-height: 1.6; }

.form-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 40px 38px;
  box-shadow: var(--shadow-sm);
}
.form-card h2 { font-size: 24px; color: var(--c-primary); margin-bottom: 8px; }
.form-card .tip { font-size: 13.5px; color: var(--c-text-light); margin-bottom: 26px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.field label {
  display: block;
  font-size: 13.5px;
  color: var(--c-primary);
  font-weight: 600;
  margin-bottom: 6px;
}
.field label i { color: #e74c3c; font-style: normal; margin-left: 2px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--c-line);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: var(--c-bg-soft);
  transition: all .2s;
  color: var(--c-text);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(245, 166, 35, .15);
}
.field textarea { resize: vertical; min-height: 110px; }
.form-card .btn { margin-top: 22px; width: 100%; justify-content: center; }
.form-ok {
  display: none;
  margin-top: 14px;
  padding: 12px 16px;
  background: #eafaf1;
  border: 1px solid #b7ebd0;
  color: #1e7e4a;
  border-radius: 8px;
  font-size: 14px;
}

/* ---------------- 地图占位 ---------------- */
.map-box {
  margin-top: 50px;
  height: 320px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(rgba(14,58,93,.06), rgba(14,58,93,.06)),
    repeating-linear-gradient(0deg, transparent 0 38px, #dfe8ee 38px 39px),
    repeating-linear-gradient(90deg, transparent 0 38px, #dfe8ee 38px 39px),
    #eef4f7;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 8px;
  color: var(--c-text-light);
  border: 1px solid var(--c-line);
}
.map-box .pin { color: var(--c-accent); }

/* ---------------- 高德地图容器 ---------------- */
.map-box.map-real { position: relative; overflow: hidden; padding: 0; }
.map-box.map-real #companyMap { position: absolute; inset: 0; }

/* ---------------- 产品详情区块 ---------------- */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 46px 0;
}
.product-detail + .product-detail { border-top: 1px dashed var(--c-line); }
.product-detail.reverse .pd-visual { order: 2; }
.pd-visual .frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.pd-info .pd-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--c-bg-soft);
  color: var(--c-primary-2);
  border-radius: 999px;
  font-size: 13px;
  margin-bottom: 14px;
  font-weight: 600;
}
.pd-info h2 { font-size: 28px; color: var(--c-primary); margin-bottom: 14px; }
.pd-info .pd-desc { margin-bottom: 20px; }
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 18px 0 24px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--c-line);
}
.spec-table th, .spec-table td {
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--c-line);
}
.spec-table th {
  background: var(--c-bg-soft);
  color: var(--c-primary);
  width: 130px;
  font-weight: 600;
}
.spec-table tr:last-child td, .spec-table tr:last-child th { border-bottom: none; }
.pd-points { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 24px; }
.pd-points li {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 14px;
}
.pd-points .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c-accent);
  flex-shrink: 0;
}

/* ---------------- 筛选标签 ---------------- */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 46px;
}
.filter-bar button {
  padding: 9px 26px;
  border-radius: 999px;
  border: 1px solid var(--c-line);
  background: #fff;
  color: var(--c-text);
  font-size: 14px;
  transition: all .25s;
}
.filter-bar button:hover { border-color: var(--c-accent); color: var(--c-accent); }
.filter-bar button.active {
  background: linear-gradient(135deg, var(--c-accent), #ff8a1e);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 5px 16px rgba(245, 166, 35, .35);
}

/* ---------------- 分页 ---------------- */
.pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 56px;
}
.pagination a {
  min-width: 40px; height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  border: 1px solid var(--c-line);
  border-radius: 8px;
  font-size: 14px;
  color: var(--c-text);
  transition: all .2s;
  background: #fff;
}
.pagination a:hover { border-color: var(--c-accent); color: var(--c-accent); }
.pagination a.cur {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

/* ---------------- 页脚 ---------------- */
.site-footer {
  background: var(--c-dark);
  color: rgba(255, 255, 255, .72);
  margin-top: 90px;
}
.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding: 64px 0 46px;
}
.footer-main h3 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer-main h3::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 26px; height: 2px;
  background: var(--c-accent);
}
.footer-brand p { font-size: 13.5px; margin: 16px 0 20px; }
.footer-main li { margin-bottom: 10px; font-size: 14px; }
.footer-main li a:hover { color: var(--c-accent-2); }
.footer-contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.footer-contact .ico { color: var(--c-accent); margin-top: 4px; flex-shrink: 0; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.footer-bottom a:hover { color: var(--c-accent-2); }

/* ---------------- 悬浮工具栏 ---------------- */
.float-tools {
  position: fixed;
  right: 18px; bottom: 90px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-tools a, .float-tools button {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--c-line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  transition: all .25s;
}
.float-tools a:hover, .float-tools button:hover {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: #fff;
  transform: translateY(-3px);
}
#backTop {
  opacity: 0;
  visibility: hidden;
}
#backTop.show { opacity: 1; visibility: visible; }

/* ---------------- 动画 ---------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .1s; }
.reveal-d2 { transition-delay: .2s; }
.reveal-d3 { transition-delay: .3s; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .product-detail { grid-template-columns: 1fr; gap: 30px; }
  .product-detail.reverse .pd-visual { order: 0; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid, .stats-grid, .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid::before { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 40px; }
  .hero { height: 540px; }
  .hero-art { display: none; }
}

@media (max-width: 768px) {
  .topbar .t-left span:nth-child(2) { display: none; }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
  }
  .nav-toggle span {
    width: 24px; height: 2.5px;
    background: var(--c-primary);
    border-radius: 2px;
    transition: all .3s;
  }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

  .nav {
    position: fixed;
    top: calc(var(--header-h) + 36px);
    left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    box-shadow: var(--shadow-md);
    padding: 10px 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
    gap: 0;
  }
  .nav.open { max-height: 640px; }
  .nav > li > a { line-height: 1; padding: 14px 28px; }
  .nav > li > a::after { display: none; }
  .nav .dropdown {
    position: static;
    opacity: 1; visibility: visible;
    transform: none;
    box-shadow: none;
    padding: 0;
    display: none;
  }
  .nav > li:hover .dropdown,
  .nav > li.expand .dropdown { display: block; }
  .nav .dropdown a { padding-left: 46px; }

  .hero { height: 480px; }
  .hero h1 { font-size: 30px; }
  .hero p.desc { font-size: 15px; }
  .sec { padding: 60px 0; }
  .sec-head h2 { font-size: 26px; }
  .product-grid, .case-grid, .news-grid, .adv-grid, .stats-grid, .cert-grid { grid-template-columns: 1fr; }
  .pd-points { grid-template-columns: 1fr; }
  .spec-table th, .spec-table td { padding: 8px 10px; font-size: 13px; }
  .spec-table th { width: 96px; }
  .flow-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; padding: 46px 0 30px; }
  .cta-band { flex-direction: column; text-align: center; padding: 36px 28px; }
  .cta-band .tel { text-align: center; }
  .news-row { flex-direction: column; align-items: flex-start; }
  .about-visual .exp { right: 10px; }
  .page-banner { height: 220px; }
  .page-banner h1 { font-size: 28px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-bottom { justify-content: center; text-align: center; }
}