@charset "UTF-8";
/* ==========================================================================
   山东联诚环保科技有限公司 · 企业官网样式表
   Author: Liancheng Web
   Structure:
     01. 设计变量 (Design Tokens)
     02. 基础重置与全局排版 (Reset & Base)
     03. 布局工具 (Layout Utilities)
     04. 通用组件 (Buttons / Cards / Section / Breadcrumb)
     05. 页头与导航 (Header & Nav)
     06. 首屏 (Hero)
     07. 首页各区块 (Home Sections)
     08. 内页通用 (Inner Page)
     09. 关于我们 (About)
     10. 产品服务 (Products)
     11. 联系我们 (Contact)
     12. 页脚 (Footer)
     13. 动效与响应式 (Animation & Responsive)
   ========================================================================== */

/* ==========================================================================
   01. 设计变量
   ========================================================================== */
:root {
  /* 品牌色 —— 深海蓝绿，兼顾「环保科技」与工业质感 */
  --brand-950: #06202c;
  --brand-900: #0a3143;
  --brand-800: #0d4356;
  --brand-700: #10566e;
  --brand-600: #146d89;
  --brand-500: #1a87a6;
  --brand-100: #e3f1f6;
  --brand-50:  #f1f9fb;

  /* 辅助色 —— 环保绿 */
  --accent-700: #0d7a68;
  --accent-600: #109282;
  --accent-500: #16a893;
  --accent-100: #ddf5f0;

  /* 中性色 */
  --white:  #ffffff;
  --gray-50:  #f6f9fa;
  --gray-100: #eef3f5;
  --gray-200: #e0e8eb;
  --gray-300: #cbd7dc;
  --gray-500: #6b7f89;
  --gray-600: #52656f;
  --gray-700: #35474f;
  --ink:      #12252e;

  /* 语义色 */
  --text:        var(--ink);
  --text-muted:  var(--gray-600);
  --text-soft:   var(--gray-500);
  --border:      var(--gray-200);
  --bg:          var(--white);
  --bg-soft:     var(--gray-50);
  --bg-brand:    var(--brand-900);

  /* 排版 */
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
               "Noto Sans CJK SC", "WenQuanYi Micro Hei", -apple-system, BlinkMacSystemFont,
               "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-num: "SF Pro Display", "Helvetica Neue", Arial, sans-serif;

  /* 尺寸 */
  --container: 1200px;
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 14px;
  --header-h: 76px;

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(10, 49, 67, .06);
  --shadow-sm: 0 4px 14px rgba(10, 49, 67, .07);
  --shadow-md: 0 12px 32px rgba(10, 49, 67, .10);
  --shadow-lg: 0 24px 60px rgba(10, 49, 67, .14);

  /* 过渡 */
  --ease: cubic-bezier(.22, .61, .36, 1);
  --t-fast: .18s var(--ease);
  --t: .32s var(--ease);
  --t-slow: .6s var(--ease);
}

/* ==========================================================================
   02. 基础重置与全局排版
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .6em;
  font-weight: 600;
  line-height: 1.3;
  color: var(--brand-900);
  letter-spacing: .01em;
}

h1 { font-size: clamp(28px, 4.2vw, 46px); font-weight: 700; letter-spacing: .02em; }
h2 { font-size: clamp(24px, 3vw, 34px); }
h3 { font-size: clamp(19px, 2vw, 22px); }
h4 { font-size: 17px; }

p { margin: 0 0 1.1em; color: var(--text-muted); }
p:last-child { margin-bottom: 0; }

a { color: var(--brand-600); text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--accent-600); }

img, svg, video { max-width: 100%; height: auto; display: block; }
img { border-style: none; }

ul, ol { margin: 0; padding: 0; }
li { list-style: none; }

strong, b { font-weight: 600; color: var(--brand-800); }

::selection { background: var(--brand-600); color: #fff; }

:focus-visible {
  outline: 3px solid var(--accent-500);
  outline-offset: 2px;
  border-radius: 3px;
}

/* 屏幕阅读器专用文本 */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* 跳转主内容 */
.skip-link {
  position: absolute; top: -60px; left: 16px; z-index: 999;
  padding: 10px 22px; background: var(--brand-800); color: #fff;
  border-radius: 0 0 var(--radius) var(--radius); font-size: 14px;
  transition: top var(--t);
}
.skip-link:focus { top: 0; color: #fff; }

/* ==========================================================================
   03. 布局工具
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.container--narrow { max-width: 900px; }

.section { padding: 96px 0; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: 72px 0; }
.section--brand {
  background: var(--bg-brand);
  color: #e9f2f5;
}
.section--brand h2, .section--brand h3 { color: #fff; }
.section--brand p { color: rgba(233, 242, 245, .78); }

.grid { display: grid; gap: 28px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ==========================================================================
   04. 通用组件
   ========================================================================== */
/* --- 标题组 --- */
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent-600);
}
.section-head--center .eyebrow::after,
.section-head--center .eyebrow::before { content: ""; }
.section--brand .eyebrow { color: var(--accent-500); }

.section-head h2 { margin-bottom: 18px; }
.section-head .lead {
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--text-soft);
}
.section-head--center .lead { margin-left: auto; margin-right: auto; }

.section-head--left { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; max-width: none; }
.section-head--left .section-head__text { max-width: 660px; }

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 32px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .04em;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--t-fast), color var(--t-fast),
              border-color var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--brand-700); color: #fff; box-shadow: 0 8px 20px rgba(16, 86, 110, .22); }
.btn--primary:hover { background: var(--brand-800); color: #fff; box-shadow: 0 12px 26px rgba(16, 86, 110, .28); }

.btn--accent { background: var(--accent-600); color: #fff; box-shadow: 0 8px 20px rgba(16, 146, 130, .24); }
.btn--accent:hover { background: var(--accent-700); color: #fff; }

.btn--ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .5); }
.btn--ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; color: #fff; }

.btn--outline { background: transparent; color: var(--brand-700); border-color: var(--gray-300); }
.btn--outline:hover { border-color: var(--brand-600); color: var(--brand-800); background: var(--brand-50); }

.btn--light { background: #fff; color: var(--brand-800); }
.btn--light:hover { background: var(--brand-50); color: var(--brand-900); }

.btn--sm { padding: 10px 22px; font-size: 14px; }
.btn__arrow { transition: transform var(--t-fast); }
.btn:hover .btn__arrow { transform: translateX(4px); }

.btn-group { display: flex; flex-wrap: wrap; gap: 14px; }

/* --- 卡片 --- */
.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--brand-100); }
.card h3 { margin-bottom: 12px; font-size: 19px; }
.card p { font-size: 15px; line-height: 1.85; margin-bottom: 0; }

.card__icon {
  display: flex; align-items: center; justify-content: center;
  width: 54px; height: 54px; margin-bottom: 22px;
  border-radius: 12px;
  background: var(--brand-50);
  color: var(--brand-600);
  transition: background var(--t), color var(--t);
}
.card:hover .card__icon { background: var(--brand-700); color: #fff; }
.card__icon svg { width: 26px; height: 26px; }

.card__index {
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--gray-300);
  margin-bottom: 16px;
  display: block;
}

/* --- 数据统计 --- */
.stat { text-align: left; }
.stat__num {
  font-family: var(--font-num);
  font-size: clamp(32px, 4vw, 46px);
  font-weight: 700;
  line-height: 1;
  color: var(--brand-700);
  letter-spacing: -.02em;
}
.stat__num small { font-size: .5em; font-weight: 600; margin-left: 3px; }
.stat__label { margin-top: 12px; font-size: 14.5px; color: var(--text-soft); letter-spacing: .02em; }
.section--brand .stat__num { color: #fff; }
.section--brand .stat__label { color: rgba(233, 242, 245, .7); }

/* --- 标签 --- */
.tag {
  display: inline-block;
  padding: 5px 13px;
  border-radius: 100px;
  background: var(--brand-50);
  border: 1px solid var(--brand-100);
  font-size: 13px;
  font-weight: 500;
  color: var(--brand-700);
}

/* --- 面板/图片框 --- */
.media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--gray-100);
}
.media img { width: 100%; object-fit: cover; transition: transform var(--t-slow); }
.media--zoom:hover img { transform: scale(1.05); }

/* ==========================================================================
   05. 页头与导航
   ========================================================================== */
.topbar {
  background: var(--brand-950);
  color: rgba(233, 242, 245, .8);
  font-size: 13px;
  line-height: 1;
}
.topbar__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; min-height: 40px; flex-wrap: wrap;
}
.topbar ul { display: flex; gap: 26px; flex-wrap: wrap; }
.topbar li { display: flex; align-items: center; gap: 7px; }
.topbar svg { width: 14px; height: 14px; opacity: .7; }
.topbar a { color: rgba(233, 242, 245, .8); }
.topbar a:hover { color: #fff; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--t), background var(--t);
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); background: rgba(255, 255, 255, .98); }

.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 32px; height: var(--header-h);
}

/* Logo */
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo__mark { width: 42px; height: 42px; flex-shrink: 0; }
.logo__text { display: flex; flex-direction: column; line-height: 1.25; }
.logo__name {
  font-size: 18px; font-weight: 700; color: var(--brand-900);
  letter-spacing: 0.6em;
}
.logo__sub {
  font-size: 10px; font-weight: 500; letter-spacing: .1em;
  text-transform: uppercase; color: var(--gray-500);
}
.logo:hover .logo__name { color: var(--brand-700); }

/* 主导航 */
.nav { display: flex; align-items: center; gap: 4px; }
.nav__link {
  position: relative;
  display: block;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 15.5px;
  font-weight: 500;
  color: var(--gray-700);
  transition: color var(--t-fast), background var(--t-fast);
}
.nav__link::after {
  content: "";
  position: absolute; left: 18px; right: 18px; bottom: 4px;
  height: 2px; background: var(--accent-600);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--t);
}
.nav__link:hover { color: var(--brand-800); background: var(--brand-50); }
.nav__link:hover::after { transform: scaleX(1); }
.nav__link[aria-current="page"] { color: var(--brand-800); font-weight: 600; }
.nav__link[aria-current="page"]::after { transform: scaleX(1); }

.header__tel {
  display: flex; align-items: center; gap: 11px;
  padding-left: 26px; border-left: 1px solid var(--border);
  font-family: var(--font-num);
  font-size: 17px; font-weight: 700; color: var(--brand-800);
  letter-spacing: .01em;
}
.header__tel svg { width: 20px; height: 20px; color: var(--accent-600); }
.header__tel small {
  display: block; font-family: var(--font-sans);
  font-size: 11px; font-weight: 400; color: var(--gray-500); letter-spacing: .06em;
}

/* 汉堡菜单 */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  padding: 0; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: #fff; cursor: pointer;
}
.nav-toggle span {
  display: block; width: 20px; height: 2px; margin: 4px auto;
  background: var(--brand-800); border-radius: 2px;
  transition: transform var(--t), opacity var(--t-fast);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ==========================================================================
   06. 首屏 Hero
   ========================================================================== */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 620px;
  padding: 110px 0 120px;
  overflow: hidden;
  background: var(--brand-950);
  color: #fff;
}
.hero__bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: .92;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(105deg, rgba(6, 32, 44, .94) 0%, rgba(10, 49, 67, .82) 44%, rgba(10, 49, 67, .34) 100%),
    linear-gradient(0deg, rgba(6, 32, 44, .5) 0%, transparent 55%);
}
.hero__inner { position: relative; z-index: 2; max-width: 780px; }

.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  margin-bottom: 26px;
  padding: 8px 18px 8px 14px;
  border: 1px solid rgba(255, 255, 255, .26);
  border-radius: 100px;
  background: rgba(255, 255, 255, .08);
  backdrop-filter: blur(6px);
  font-size: 13.5px; font-weight: 500; letter-spacing: .08em;
  color: rgba(255, 255, 255, .92);
}
.hero__eyebrow .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent-500);
  box-shadow: 0 0 0 4px rgba(22, 168, 147, .22);
}

.hero h1 {
  color: #fff;
  margin-bottom: 22px;
  font-size: clamp(30px, 4.6vw, 52px);
  line-height: 1.22;
  letter-spacing: .015em;
}
.hero h1 em {
  font-style: normal;
  color: #7fdcc9;
}
.hero__desc {
  max-width: 620px;
  margin-bottom: 38px;
  font-size: 17px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .84);
}
.hero__desc strong { color: #fff; font-weight: 600; }

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, .16);
  max-width: 660px;
}
.hero__stats .stat__num { color: #fff; }
.hero__stats .stat__label { color: rgba(255, 255, 255, .68); }

/* 内页 Banner */
.page-hero {
  position: relative;
  display: flex; align-items: center;
  min-height: 340px;
  padding: 90px 0 76px;
  overflow: hidden;
  background: var(--brand-950);
  color: #fff;
}
.page-hero__bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover; opacity: .85;
}
.page-hero::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(6, 32, 44, .93) 0%, rgba(9, 45, 62, .8) 50%, rgba(10, 49, 67, .5) 100%);
}
.page-hero__inner { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; margin-bottom: 14px; }
.page-hero__desc {
  max-width: 660px; margin-bottom: 0;
  font-size: 16.5px; line-height: 1.85;
  color: rgba(255, 255, 255, .8);
}

/* 面包屑 */
.breadcrumb {
  display: flex; align-items: center; flex-wrap: wrap; gap: 9px;
  margin-bottom: 22px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .62);
}
.breadcrumb a { color: rgba(255, 255, 255, .82); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb li { display: flex; align-items: center; gap: 9px; }
.breadcrumb li + li::before { content: "/"; color: rgba(255, 255, 255, .38); }
.breadcrumb [aria-current="page"] { color: #fff; }

/* ==========================================================================
   07. 首页区块
   ========================================================================== */
/* 优势 */
.advantage { padding-top: 88px; }

/* 产品概览卡 */
.product-card {
  display: flex; flex-direction: column;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--brand-100); }
.product-card__media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--gray-100); }
.product-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-slow); }
.product-card:hover .product-card__media img { transform: scale(1.06); }
.product-card__body { display: flex; flex-direction: column; flex: 1; padding: 26px 26px 28px; }
.product-card__body h3 { margin-bottom: 10px; font-size: 18px; }
.product-card__body p { font-size: 14.5px; line-height: 1.8; }
.product-card__meta {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: 18px; padding-top: 18px;
  border-top: 1px dashed var(--border);
}
.product-card__meta span {
  font-size: 12.5px; color: var(--text-soft);
  padding: 3px 10px; background: var(--gray-50); border-radius: 4px;
}

/* 两栏图文 */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.split--reverse .split__media { order: 2; }
.split__media { position: relative; }
.split__media img { width: 100%; border-radius: var(--radius-lg); }
.split__badge {
  position: absolute; right: -14px; bottom: -20px;
  padding: 22px 26px;
  background: var(--brand-800);
  color: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 168px;
}
.split__badge b {
  display: block; font-family: var(--font-num);
  font-size: 32px; font-weight: 700; line-height: 1; color: #fff;
  white-space: nowrap;
}
.split__badge span { display: block; margin-top: 8px; font-size: 13px; color: rgba(255, 255, 255, .74); }

.check-list { margin-top: 26px; display: grid; gap: 15px; }
.check-list li {
  display: flex; align-items: flex-start; gap: 13px;
  font-size: 15.5px; color: var(--text-muted); line-height: 1.7;
}
.check-list svg {
  width: 20px; height: 20px; flex-shrink: 0; margin-top: 3px;
  color: var(--accent-600);
}

/* 应用领域 */
.app-item {
  display: flex; align-items: center; gap: 16px;
  padding: 22px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}
.app-item:hover { transform: translateY(-4px); border-color: var(--brand-100); box-shadow: var(--shadow-sm); }
.app-item svg { width: 26px; height: 26px; flex-shrink: 0; color: var(--brand-600); }
.app-item h4 { margin: 0; font-size: 16px; color: var(--brand-900); }
.app-item p { margin: 2px 0 0; font-size: 13.5px; }

/* 品质/证书 */
.cert {
  display: flex; flex-direction: column; justify-content: center;
  padding: 28px 26px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius);
  transition: background var(--t), border-color var(--t);
}
.cert:hover { background: rgba(255, 255, 255, .1); border-color: rgba(22, 168, 147, .5); }
.cert strong { display: block; font-size: 17px; color: #fff; margin-bottom: 8px; font-weight: 600; }
.cert span { font-size: 13.5px; color: rgba(233, 242, 245, .66); line-height: 1.7; }

/* CTA 横幅 */
.cta {
  position: relative;
  overflow: hidden;
  padding: 72px 0;
  background: linear-gradient(120deg, var(--brand-800) 0%, var(--brand-700) 52%, var(--accent-700) 140%);
  color: #fff;
}
.cta::before {
  content: "";
  position: absolute; top: -60%; right: -6%;
  width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(22, 168, 147, .32), transparent 68%);
}
.cta__inner {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  gap: 40px; flex-wrap: wrap;
}
.cta h2 { color: #fff; margin-bottom: 10px; }
.cta p { margin: 0; color: rgba(255, 255, 255, .82); font-size: 16px; }

/* ==========================================================================
   08. 内页通用
   ========================================================================== */
.anchor-nav {
  display: flex; flex-wrap: wrap; gap: 10px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 56px;
}
.anchor-nav a {
  padding: 9px 20px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 14.5px; color: var(--gray-700);
  transition: all var(--t-fast);
}
.anchor-nav a:hover,
.anchor-nav a.is-active {
  background: var(--brand-700); border-color: var(--brand-700); color: #fff;
}

/* ==========================================================================
   09. 关于我们
   ========================================================================== */
.value-card {
  padding: 36px 30px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  border-top: 3px solid var(--accent-600);
  transition: transform var(--t), box-shadow var(--t);
}
.value-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.value-card h3 { font-size: 18px; margin-bottom: 12px; }
.value-card p { font-size: 14.5px; line-height: 1.85; }

/* 时间轴 */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute; left: 6px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--brand-600), var(--accent-500) 65%, transparent);
}
.timeline__item { position: relative; padding-bottom: 42px; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: "";
  position: absolute; left: -34px; top: 7px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 3px solid var(--brand-600);
  box-shadow: 0 0 0 4px rgba(26, 135, 166, .12);
}
.timeline__year {
  display: block;
  font-family: var(--font-num);
  font-size: 15px; font-weight: 700; letter-spacing: .08em;
  color: var(--accent-600); margin-bottom: 8px;
}
.timeline__item h3 { font-size: 18px; margin-bottom: 8px; }
.timeline__item p { font-size: 15px; margin: 0; }

/* 产能条 */
.capacity {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 22px 48px;
}
.capacity__row { padding-bottom: 18px; border-bottom: 1px solid rgba(255, 255, 255, .14); }
.capacity__top { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 10px; }
.capacity__name { font-size: 15.5px; color: rgba(233, 242, 245, .88); }
.capacity__val { font-family: var(--font-num); font-size: 17px; font-weight: 700; color: #7fdcc9; }
.capacity__bar { height: 6px; border-radius: 100px; background: rgba(255, 255, 255, .12); overflow: hidden; }
.capacity__bar i {
  display: block; height: 100%; border-radius: 100px;
  background: linear-gradient(90deg, var(--brand-500), var(--accent-500));
  width: 0;
  transition: width 1.4s var(--ease);
}

/* ==========================================================================
   10. 产品服务
   ========================================================================== */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}
.spec-table caption {
  text-align: left;
  font-size: 13px;
  color: var(--text-soft);
  padding-bottom: 12px;
}
.spec-table th, .spec-table td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
}
.spec-table thead th {
  background: var(--brand-50);
  color: var(--brand-800);
  font-weight: 600;
  white-space: nowrap;
}
.spec-table tbody tr:nth-child(even) { background: var(--gray-50); }
.spec-table td:first-child { font-weight: 500; color: var(--brand-800); }

.spec-wrap { overflow-x: auto; border-radius: var(--radius); }

.product-detail { padding: 64px 0; border-bottom: 1px solid var(--border); }
.product-detail:last-of-type { border-bottom: 0; }
.product-detail__grid {
  display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: start;
}
.product-detail__media { border-radius: var(--radius-lg); overflow: hidden; background: var(--gray-100); }
.product-detail__num {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 13px; font-weight: 700; letter-spacing: .14em;
  color: var(--brand-500); margin-bottom: 12px;
}
.product-detail h2 { font-size: clamp(22px, 2.4vw, 28px); margin-bottom: 10px; }
.product-detail__en {
  display: block; margin-bottom: 20px;
  font-family: var(--font-num);
  font-size: 13.5px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--gray-500);
}
.product-detail p { font-size: 15.5px; line-height: 1.9; }
.product-detail .spec-wrap { margin-top: 28px; }

.service-card {
  display: flex; gap: 20px;
  padding: 30px 28px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--t), box-shadow var(--t);
}
.service-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.service-card__icon {
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  width: 50px; height: 50px; border-radius: 12px;
  background: var(--brand-50); color: var(--brand-600);
}
.service-card__icon svg { width: 24px; height: 24px; }
.service-card h3 { font-size: 17.5px; margin-bottom: 9px; }
.service-card p { font-size: 14.5px; line-height: 1.8; margin: 0; }

/* ==========================================================================
   11. 联系我们
   ========================================================================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: start; }

.info-card {
  display: flex; gap: 18px;
  padding: 26px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--t), box-shadow var(--t);
}
.info-card:hover { border-color: var(--brand-100); box-shadow: var(--shadow-sm); }
.info-card__icon {
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--brand-700); color: #fff;
}
.info-card__icon svg { width: 21px; height: 21px; }
.info-card h3 { font-size: 14px; color: var(--text-soft); font-weight: 500; letter-spacing: .06em; margin-bottom: 8px; }
.info-card p { margin: 0; font-size: 16.5px; font-weight: 600; color: var(--brand-900); line-height: 1.6; }
.info-card p.normal { font-size: 14.5px; font-weight: 400; color: var(--text-muted); margin-top: 4px; }
.info-card a { color: var(--brand-800); }
.info-card a:hover { color: var(--accent-600); }

/* 表单 */
.form-panel {
  padding: 42px 44px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.form-panel h2 { font-size: 24px; margin-bottom: 10px; }
.form-panel > p { font-size: 14.5px; margin-bottom: 30px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-field { margin-bottom: 20px; }
.form-field label {
  display: block; margin-bottom: 8px;
  font-size: 14px; font-weight: 500; color: var(--gray-700);
}
.form-field label .req { color: #c0392b; margin-left: 3px; }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  background: var(--white);
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.form-field textarea { min-height: 132px; resize: vertical; line-height: 1.7; }
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--gray-500); opacity: .8; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--brand-600);
  box-shadow: 0 0 0 4px rgba(20, 109, 137, .1);
}
.form-field .error-msg { display: none; margin-top: 6px; font-size: 13px; color: #c0392b; }
.form-field.has-error input,
.form-field.has-error textarea { border-color: #c0392b; }
.form-field.has-error .error-msg { display: block; }

.form-foot { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin-top: 8px; }
.form-note { font-size: 13px; color: var(--text-soft); margin: 0; }

.form-alert {
  display: none;
  margin-top: 22px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  border: 1px solid transparent;
}
.form-alert.is-visible { display: block; }
.form-alert--ok { background: var(--accent-100); border-color: #a9e2d7; color: var(--accent-700); }
.form-alert--err { background: #fdecea; border-color: #f5c2bd; color: #b03a2e; }

/* 交通指引 */
.route-list { display: grid; gap: 16px; margin-top: 24px; }
.route-list li {
  display: flex; gap: 14px;
  padding: 18px 20px;
  background: var(--bg-soft);
  border-left: 3px solid var(--brand-600);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
}
.route-list svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 4px; color: var(--brand-600); }
.route-list b { color: var(--brand-800); }

/* 小地图示意图 */
.map-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--gray-50);
}
.map-card img { width: 100%; }
.map-card__legend {
  display: flex; align-items: center; gap: 12px;
  padding: 18px 22px;
  background: #fff;
  border-top: 1px solid var(--border);
}
.map-card__legend svg { width: 20px; height: 20px; color: var(--accent-600); flex-shrink: 0; }
.map-card__legend span { font-size: 14.5px; color: var(--text-muted); }

/* ==========================================================================
   12. 页脚
   ========================================================================== */
.site-footer {
  background: var(--brand-950);
  color: rgba(233, 242, 245, .68);
  font-size: 14.5px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding: 68px 0 52px;
}
.footer__brand .logo__name { color: #fff; }
.footer__brand .logo__sub { color: rgba(233, 242, 245, .5); }
.footer__desc { margin: 22px 0 0; font-size: 14px; line-height: 1.9; color: rgba(233, 242, 245, .6); max-width: 340px; }

.footer__col h3 {
  margin-bottom: 22px;
  font-size: 15px; font-weight: 600; color: #fff; letter-spacing: .06em;
}
.footer__col li { margin-bottom: 13px; }
.footer__col a { color: rgba(233, 242, 245, .68); }
.footer__col a:hover { color: #fff; }
.footer__col address { font-style: normal; line-height: 1.9; }
.footer__col p { color: rgba(233, 242, 245, .68); margin: 0 0 12px; font-size: 14.5px; }
.footer__col strong { color: #fff; font-weight: 600; }

.footer__bottom {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, .1);
  font-size: 13.5px;
  color: rgba(233, 242, 245, .5);
}
.footer__bottom a { color: rgba(233, 242, 245, .6); }
.footer__bottom a:hover { color: #fff; }
.footer__links { display: flex; gap: 22px; flex-wrap: wrap; }

/* 回到顶部 */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  display: flex; align-items: center; justify-content: center;
  width: 46px; height: 46px;
  border: 0; border-radius: 50%;
  background: var(--brand-700); color: #fff;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity var(--t), transform var(--t), visibility var(--t), background var(--t-fast);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--brand-800); }
.to-top svg { width: 20px; height: 20px; }

/* ==========================================================================
   13. 动效与响应式
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ---- 平板 ---- */
@media (max-width: 1080px) {
  .header__tel { display: none; }
  .split { gap: 48px; }
  .product-detail__grid { gap: 40px; }
  .contact-grid { gap: 40px; }
  .footer__top { grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
  .footer__col:last-child { grid-column: 1 / -1; }
}

/* ---- 小屏导航 ---- */
@media (max-width: 900px) {
  :root { --header-h: 68px; }
  .section { padding: 68px 0; }
  .section--tight { padding: 54px 0; }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }

.topbar {
    display: none;
  }

  .nav-toggle { display: block; }
  .nav {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 12px 24px 20px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav__link { padding: 14px 4px; border-bottom: 1px solid var(--gray-100); border-radius: 0; font-size: 16px; }
  .nav__link::after { display: none; }
  .nav__link[aria-current="page"] { color: var(--brand-700); }

  .hero { min-height: auto; padding: 84px 0 88px; }
  .hero__stats { gap: 22px; margin-top: 48px; padding-top: 32px; }
  .page-hero { min-height: 280px; padding: 68px 0 58px; }

  .split, .split--reverse { grid-template-columns: 1fr; gap: 40px; }
  .split--reverse .split__media { order: 0; }
  .split__badge { right: 16px; bottom: -16px; }

  .product-detail__grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .capacity { grid-template-columns: 1fr; gap: 18px; }
  .cta__inner { flex-direction: column; align-items: flex-start; }
  .section-head--left { flex-direction: column; align-items: flex-start; gap: 22px; }
}

/* ---- 手机 ---- */
@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .section { padding: 56px 0; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; gap: 20px; }
  .hero { padding: 68px 0 72px; }
  .hero__desc { font-size: 15.5px; }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .hero__stats .stat:last-child { grid-column: 1 / -1; }
  .card { padding: 28px 24px; }
  .form-panel { padding: 30px 22px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .btn { width: 100%; }
  .btn-group { flex-direction: column; }
  .footer__top { grid-template-columns: 1fr; gap: 34px; padding: 52px 0 40px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .to-top { right: 16px; bottom: 16px; }
  .product-card__body { padding: 22px 20px 24px; }
  .topbar { font-size: 12.5px; }
  .topbar ul { gap: 16px; }
}

/* ---- 打印 ---- */
@media print {
  .site-header, .topbar, .to-top, .cta, .site-footer { display: none !important; }
  body { color: #000; }
  .reveal { opacity: 1; transform: none; }
}


/* ---- 地图 ---- */
#container {
	--mapheight:360px;
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center center;
	transition:filter 0.5s;
	width:100%;
	height:var(--mapheight);
	

}
#dingwei{
	width:100%;
	height:100%;
	/*background-image: url(/images/dingwei.png);*/
	
  filter: drop-shadow(0 0 15px #FFFFFF);

	background-repeat: no-repeat;
	background-position: center center;
	display: flex;
	justify-content: center;
	align-items: center;
	text-align:center
	
	
}
#zhedang {
	float: left;
	height: 40px;
	width: 160px;
	background: rgba(255,255,255,.1);/*url(bpublic/images/line.png)*/
	position: absolute;
	left: 0;
	bottom: 0;
	z-index:10000;
	backdrop-filter: blur(5px);	/*border-radius:20px*/
}
.kongzhi {
	float: right;
	height: 100px;
	width: 50px;
	background: rgba(0,0,0,.1);/*url(bpublic/images/line.png)*/
	position: absolute;
	right: 10px;
	bottom: 10px;
	z-index:10000;
	border: 1px solid rgba(25,186,139,.17);	/*border-radius:20px*/
}


.kongzhi a {
	height: 40px;
	width:  40px;
	margin-top:5px;
	margin-right: auto;
	margin-left: auto;
	display: block;
	text-align: center;
	line-height: 40px;
	color: #FFFFFF;
	background-color: rgba(0,0,0,0.3);
	transition:all .5s;
	text-decoration: none;
}
.kongzhi a i{

	color: #FFFFFF;
}
.kongzhi a:hover ,.kongzhi .ts  {

	color: #000;
	background-color: rgba(255,255,255,1);
	
}
.kongzhi a:hover i {

	color: #000;
	background-color: rgba(255,255,255,1);
	
}
#ac{
	width:100%;
	height:var(--mapheight);
	position: absolute;
}
.blur { filter: blur(20px); }