/* ==========================================================================
   安徽凯而文制冷科技有限公司 - 官网样式表
   简约大气 / 响应式 / 冷色系
   ========================================================================== */

:root {
  --brand: #0a54a6;
  --brand-dark: #073d7a;
  --brand-light: #e8f1fb;
  --accent: #00a3c4;
  --accent-light: #e2f6fa;

  --ink: #14202e;
  --ink-2: #38495c;
  --ink-3: #6b7c8f;
  --ink-4: #9aa8b6;

  --line: #e3e9f0;
  --line-2: #eef2f7;
  --bg: #ffffff;
  --bg-soft: #f6f9fc;
  --bg-deep: #0d2137;

  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(20, 32, 46, .06);
  --shadow: 0 4px 20px rgba(20, 32, 46, .07);
  --shadow-lg: 0 12px 40px rgba(20, 32, 46, .1);

  --maxw: 1200px;
  --ease: cubic-bezier(.4, 0, .2, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: hidden; }

body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { color: var(--ink); font-weight: 700; line-height: 1.35; }
table { border-collapse: collapse; width: 100%; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.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;
}

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--bg-deep);
  color: #a9bdd2;
  font-size: 12.5px;
  line-height: 38px;
  height: 38px;
  overflow: hidden;
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; }
.topbar-left { display: flex; gap: 22px; }
.topbar-left span { display: inline-flex; align-items: center; gap: 6px; }
.topbar-right { display: flex; gap: 18px; }
.topbar a:hover { color: #fff; }
.topbar svg { width: 13px; height: 13px; opacity: .65; }

/* ---------- 头部导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: transparent;
  border-bottom: 1px solid var(--line);
}
/* 将毛玻璃放在伪元素上，避免 backdrop-filter 给 .nav(fixed) 建立包含块导致移动端菜单被压扁 */
.header::before {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: rgba(255, 255, 255, .96);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  backdrop-filter: saturate(180%) blur(12px);
}
.header .wrap { display: flex; align-items: center; justify-content: space-between; height: 76px; }

.logo { display: flex; align-items: center; gap: 11px; }
.logo-mark { width: 40px; height: 40px; flex: none; }
.logo-text strong {
  display: block; font-size: 17.5px; color: var(--ink);
  letter-spacing: .5px; line-height: 1.25; font-weight: 700;
}
.logo-text small {
  display: block; font-size: 10.5px; color: var(--ink-4);
  letter-spacing: 1.6px; text-transform: uppercase; font-weight: 500;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav > li > a {
  display: block; padding: 0 17px; height: 76px; line-height: 76px;
  font-size: 15px; color: var(--ink-2); font-weight: 500; position: relative;
}
.nav > li > a::after {
  content: ''; position: absolute; left: 17px; right: 17px; bottom: 22px; height: 2px;
  background: var(--brand); transform: scaleX(0); transition: transform .3s var(--ease);
}
.nav > li > a:hover { color: var(--brand); }
.nav > li > a:hover::after,
.nav > li.active > a::after { transform: scaleX(1); }
.nav > li.active > a { color: var(--brand); font-weight: 600; }

.nav-item { position: relative; }
.dropdown {
  position: absolute; top: 76px; left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 210px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 8px;
  opacity: 0; visibility: hidden; transition: all .26s var(--ease);
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 14px; border-radius: 7px; font-size: 14px; color: var(--ink-2);
}
.dropdown a:hover { background: var(--brand-light); color: var(--brand); }
.dropdown a em { font-style: normal; font-size: 11.5px; color: var(--ink-4); }

/* 产品中心 · 二级类目 mega 菜单 */
.dropdown.mega {
  left: 0; transform: translateX(0) translateY(8px);
  width: 544px; padding: 12px;
}
.nav-item:hover .dropdown.mega { transform: translateX(0) translateY(0); }
.mega-grid { display: flex; gap: 14px; }
.mega-cats {
  list-style: none; margin: 0; padding: 0; width: 156px; flex: none;
  border-right: 1px solid var(--line-2);
}
.mega-cat-label {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px; border-radius: 8px; font-size: 14.5px; font-weight: 600;
  color: var(--ink-2); cursor: pointer;
}
.mega-cat.is-active > .mega-cat-label,
.mega-cat-label:hover { background: var(--brand-light); color: var(--brand); }
.mega-arrow { font-style: normal; color: var(--ink-4); transition: transform .2s; }
.mega-cat.is-active > .mega-cat-label .mega-arrow { transform: translateX(3px); color: var(--brand); }
.mega-pane { flex: 1; min-width: 0; }
.mega-pane-group { display: none; }
.mega-pane-group.is-show { display: block; }
.mega-pane-group a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 7px 12px; border-radius: 7px; font-size: 14px; color: var(--ink-2);
}
.mega-pane-group a:hover { background: var(--brand-light); color: var(--brand); }
.mega-pane-group a em { font-style: normal; font-size: 11.5px; color: var(--ink-4); }
.mega-all {
  display: block; text-align: center; margin-top: 10px; padding: 10px;
  border-top: 1px solid var(--line-2); font-size: 14px; color: var(--brand); font-weight: 600;
}
.mega-all:hover { background: var(--brand-light); }

.header-cta { display: flex; align-items: center; gap: 14px; }
.tel-box { text-align: right; line-height: 1.3; }
.tel-box small { display: block; font-size: 11px; color: var(--ink-4); }
.tel-box strong { display: block; font-size: 18px; color: var(--brand); font-weight: 700; letter-spacing: .3px; }

.burger { display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; cursor: pointer; padding: 11px 10px; }
.burger span { display: block; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }
.burger span + span { margin-top: 5px; }
.burger.on span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.on span:nth-child(2) { opacity: 0; }
.burger.on span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 8px; font-size: 15px; font-weight: 500;
  border: 1px solid transparent; cursor: pointer; transition: all .28s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 4px 14px rgba(10, 84, 166, .25); }
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(10, 84, 166, .32); color: #fff; }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .45); }
.btn-ghost:hover { background: rgba(255, 255, 255, .14); border-color: #fff; color: #fff; }
.btn-line { background: #fff; color: var(--brand); border-color: var(--line); }
.btn-line:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-sm { padding: 9px 20px; font-size: 13.5px; }

/* ---------- 首页主视觉 ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, #072e5c 0%, #0a54a6 52%, #0782b0 100%);
  color: #fff;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, .13), transparent 42%),
    radial-gradient(circle at 12% 88%, rgba(0, 209, 255, .16), transparent 46%);
}
.hero-grid-bg {
  position: absolute; inset: 0; opacity: .5;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(to bottom, #000 10%, transparent 90%);
  -webkit-mask-image: linear-gradient(to bottom, #000 10%, transparent 90%);
}
.hero .wrap {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 50px; align-items: center;
  min-height: 540px; padding-top: 66px; padding-bottom: 66px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 15px 6px 7px; border-radius: 100px;
  background: rgba(255, 255, 255, .13); border: 1px solid rgba(255, 255, 255, .2);
  font-size: 12.5px; letter-spacing: .4px; margin-bottom: 24px;
}
.hero-badge b {
  background: #fff; color: var(--brand); border-radius: 100px;
  padding: 2px 10px; font-size: 11.5px; font-weight: 700;
}
.hero h1 {
  font-size: 46px; color: #fff; line-height: 1.24; letter-spacing: -.5px;
  margin-bottom: 20px; font-weight: 700;
}
.hero h1 em { font-style: normal; color: #7fe3ff; }
.hero p.lead {
  font-size: 16.5px; color: rgba(255, 255, 255, .82);
  max-width: 560px; margin-bottom: 34px; line-height: 1.85;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 36px; }
.hero-tags span {
  padding: 5px 14px; border-radius: 6px; font-size: 12.5px;
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .16);
  color: rgba(255, 255, 255, .85);
}
.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-visual svg { width: 100%; max-width: 380px; filter: drop-shadow(0 24px 50px rgba(0, 0, 0, .32)); }

/* ---------- 数据条 ---------- */
.stats { background: var(--bg-soft); border-bottom: 1px solid var(--line); }
.stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-item { text-align: center; padding: 42px 16px; position: relative; }
.stat-item + .stat-item::before {
  content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 1px; height: 42px; background: var(--line);
}
.stat-num { font-size: 40px; font-weight: 700; color: var(--brand); line-height: 1; letter-spacing: -1px; }
.stat-num sup { font-size: 18px; margin-left: 2px; font-weight: 600; }
.stat-label { font-size: 14px; color: var(--ink-3); margin-top: 11px; }

/* ---------- 通用区块 ---------- */
.section { padding: 86px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 660px; margin: 0 auto 52px; }
.section-head.left { text-align: left; margin-left: 0; }
.eyebrow {
  display: inline-block; font-size: 12.5px; font-weight: 600; letter-spacing: 2.4px;
  color: var(--accent); text-transform: uppercase; margin-bottom: 13px;
}
.section-head h2 { font-size: 33px; letter-spacing: -.4px; margin-bottom: 15px; }
.section-head p { font-size: 15.5px; color: var(--ink-3); line-height: 1.85; }
.section-head .divider {
  width: 46px; height: 3px; background: var(--brand); border-radius: 3px; margin: 18px auto 0;
}
.section-head.left .divider { margin-left: 0; }

/* ---------- 产品卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.product-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; transition: all .34s var(--ease); display: flex; flex-direction: column;
  position: relative;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.pc-media {
  height: 190px; display: flex; align-items: center; justify-content: center;
  background: var(--bg-soft); position: relative; overflow: hidden; border-bottom: 1px solid var(--line-2);
}
.pc-media svg { height: 138px; width: auto; transition: transform .4s var(--ease); }
.product-card:hover .pc-media svg { transform: scale(1.07) translateY(-3px); }
.pc-tag {
  position: absolute; top: 13px; left: 13px; padding: 3px 10px; border-radius: 5px;
  font-size: 11px; font-weight: 600; background: #fff; color: var(--brand);
  border: 1px solid var(--line); letter-spacing: .3px;
}
.pc-hot {
  position: absolute; top: 13px; right: 13px; padding: 3px 10px; border-radius: 5px;
  font-size: 11px; font-weight: 600; background: #ff6b35; color: #fff; letter-spacing: .3px;
}
.pc-body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.pc-body h3 { font-size: 18.5px; margin-bottom: 5px; letter-spacing: -.2px; }
.pc-formula { font-size: 12.5px; color: var(--ink-4); margin-bottom: 11px; font-family: Consolas, Monaco, monospace; }
.pc-desc {
  font-size: 13.5px; color: var(--ink-3); line-height: 1.75; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.pc-meta { display: flex; gap: 8px; margin: 14px 0 16px; flex-wrap: wrap; }
.pc-meta span {
  font-size: 11.5px; padding: 3px 9px; border-radius: 4px;
  background: var(--brand-light); color: var(--brand-dark);
}
.pc-more {
  display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px;
  color: var(--brand); font-weight: 500;
}
.pc-more svg { width: 14px; height: 14px; transition: transform .3s; }
.product-card:hover .pc-more svg { transform: translateX(4px); }

/* ---------- 优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.adv-item {
  background: #fff; padding: 34px 28px; border-radius: var(--radius-lg);
  border: 1px solid var(--line); transition: all .32s var(--ease);
}
.adv-item:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: transparent; }
.adv-icon {
  width: 54px; height: 54px; border-radius: 13px; background: var(--brand-light);
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px;
}
.adv-icon svg { width: 26px; height: 26px; stroke: var(--brand); }
.adv-item h3 { font-size: 17px; margin-bottom: 10px; }
.adv-item p { font-size: 13.8px; color: var(--ink-3); line-height: 1.8; }

/* ---------- 首页：制冷剂类别综述 ---------- */
.cat-ov-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cat-ov-card {
  display: flex; flex-direction: column; text-decoration: none; color: inherit;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 26px 24px 22px; transition: all .32s var(--ease);
}
.cat-ov-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: transparent; }
.cat-ov-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.cat-ov-head h3 { font-size: 18px; letter-spacing: -.2px; }
.cat-ov-count { flex: none; font-size: 12px; font-weight: 600; color: var(--brand); background: var(--brand-light); padding: 3px 10px; border-radius: 20px; }
.cat-ov-desc {
  font-size: 13.8px; color: var(--ink-3); line-height: 1.8; flex: 1; margin-bottom: 16px;
  display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden;
}
.cat-ov-ex { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 14px; }
.cat-ov-ex span { font-size: 12px; padding: 3px 9px; border-radius: 4px; background: var(--bg-soft); color: var(--ink-3); }
.cat-ov-link { display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; color: var(--brand); font-weight: 500; }
.cat-ov-link svg { width: 14px; height: 14px; transition: transform .3s; }
.cat-ov-card:hover .cat-ov-link svg { transform: translateX(4px); }

/* ---------- 应用领域 ---------- */
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.app-item {
  padding: 28px 26px; background: #fff; border-radius: var(--radius);
  border: 1px solid var(--line); border-left: 3px solid var(--brand);
  transition: all .3s var(--ease);
}
.app-item:hover { box-shadow: var(--shadow); transform: translateX(4px); }
.app-item h3 { font-size: 16.5px; margin-bottom: 8px; }
.app-item p { font-size: 13.8px; color: var(--ink-3); }

/* ---------- 关于（首页） ---------- */
.about-flex { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-text h2 { font-size: 31px; margin-bottom: 18px; letter-spacing: -.4px; }
.about-text p { font-size: 15px; color: var(--ink-3); line-height: 1.95; margin-bottom: 16px; }
.about-list { margin: 26px 0 30px; }
.about-list li {
  display: flex; align-items: flex-start; gap: 11px; padding: 9px 0; font-size: 14.5px; color: var(--ink-2);
}
.about-list svg { width: 19px; height: 19px; flex: none; margin-top: 3px; stroke: var(--accent); }
.about-visual { display: flex; justify-content: center; }
.about-visual svg { width: 100%; max-width: 460px; }

/* ---------- 新闻卡片 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; transition: all .32s var(--ease); display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }
.nc-media { height: 168px; position: relative; overflow: hidden; }
.nc-media svg { width: 100%; height: 100%; }
.nc-cat {
  position: absolute; top: 14px; left: 14px; padding: 4px 11px; border-radius: 5px;
  font-size: 11.5px; background: rgba(255, 255, 255, .94); color: var(--brand); font-weight: 600;
}
.nc-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.nc-date { font-size: 12.5px; color: var(--ink-4); margin-bottom: 10px; display: flex; align-items: center; gap: 6px; }
.nc-date svg { width: 13px; height: 13px; }
.nc-body h3 {
  font-size: 16.5px; line-height: 1.55; margin-bottom: 11px; transition: color .25s;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card:hover h3 { color: var(--brand); }
.nc-body p {
  font-size: 13.5px; color: var(--ink-3); line-height: 1.78; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.nc-more { margin-top: 16px; font-size: 13px; color: var(--brand); font-weight: 500; }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  background: linear-gradient(115deg, #073d7a, #0a54a6 55%, #0284ad);
  color: #fff; position: relative; overflow: hidden;
}
.cta-band::after {
  content: ''; position: absolute; right: -80px; top: -80px; width: 380px; height: 380px;
  border-radius: 50%; background: rgba(255, 255, 255, .05);
}
.cta-band .wrap {
  position: relative; z-index: 2; padding: 58px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 34px; flex-wrap: wrap;
}
.cta-band h2 { color: #fff; font-size: 28px; margin-bottom: 9px; }
.cta-band p { color: rgba(255, 255, 255, .8); font-size: 15px; }
.cta-band .btn-primary { background: #fff; color: var(--brand); box-shadow: 0 6px 20px rgba(0, 0, 0, .18); }
.cta-band .btn-primary:hover { background: #f0f6ff; color: var(--brand-dark); }

/* ---------- 内页 Banner ---------- */
.page-banner {
  background: linear-gradient(115deg, #072e5c, #0a54a6 60%, #0782b0);
  color: #fff; padding: 62px 0 58px; position: relative; overflow: hidden;
}
.page-banner::before {
  content: ''; position: absolute; inset: 0;
  background-image: radial-gradient(circle at 88% 22%, rgba(255,255,255,.1), transparent 45%);
}
.page-banner .wrap { position: relative; z-index: 2; }
.page-banner h1 { color: #fff; font-size: 36px; margin-bottom: 12px; letter-spacing: -.4px; }
.page-banner p { color: rgba(255, 255, 255, .78); font-size: 15.5px; max-width: 700px; }

/* ---------- 面包屑 ---------- */
.crumb { background: var(--bg-soft); border-bottom: 1px solid var(--line); font-size: 13.5px; }
.crumb .wrap { padding: 14px 24px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.crumb a { color: var(--ink-3); }
.crumb a:hover { color: var(--brand); }
.crumb span.sep { color: var(--ink-4); font-size: 11px; }
.crumb span.cur { color: var(--ink); }
.crumb svg { width: 14px; height: 14px; opacity: .5; }

/* ---------- 产品筛选 ---------- */
.filter-bar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-bottom: 34px; padding-bottom: 24px; border-bottom: 1px solid var(--line);
}
.filter-bar b { font-size: 14px; color: var(--ink); margin-right: 4px; font-weight: 600; }
.filter-btn {
  padding: 7px 18px; border-radius: 7px; border: 1px solid var(--line);
  background: #fff; font-size: 13.5px; color: var(--ink-2); cursor: pointer;
  transition: all .25s; font-family: inherit;
}
.filter-btn:hover { border-color: var(--brand); color: var(--brand); }
.filter-btn.on { background: var(--brand); border-color: var(--brand); color: #fff; }
.filter-count { margin-left: auto; font-size: 13.5px; color: var(--ink-3); }
.filter-count b { color: var(--brand); font-size: 15px; margin: 0 3px; }

/* ---------- 产品详情 ---------- */
.pd-top { display: grid; grid-template-columns: 440px 1fr; gap: 52px; align-items: start; }
.pd-gallery {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 40px; display: flex; align-items: center; justify-content: center; min-height: 400px;
}
.pd-gallery svg { max-height: 320px; width: auto; }
.pd-info h1 { font-size: 32px; margin-bottom: 12px; letter-spacing: -.5px; }
.pd-alias { font-size: 13.5px; color: var(--ink-4); margin-bottom: 20px; }
.pd-lead {
  font-size: 15px; color: var(--ink-2); line-height: 1.9; padding: 18px 22px;
  background: var(--brand-light); border-radius: var(--radius);
  border-left: 3px solid var(--brand); margin-bottom: 26px;
}
.pd-keyfacts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-bottom: 28px; }
.pd-keyfacts div { background: #fff; padding: 15px 18px; }
.pd-keyfacts dt { font-size: 12px; color: var(--ink-4); margin-bottom: 4px; }
.pd-keyfacts dd { font-size: 15px; color: var(--ink); font-weight: 600; }
.pd-actions { display: flex; gap: 13px; flex-wrap: wrap; }

.pd-section { margin-top: 62px; }
.pd-section > h2 {
  font-size: 22px; margin-bottom: 22px; padding-left: 14px;
  border-left: 4px solid var(--brand); line-height: 1.3;
}
.spec-table { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.spec-table table { font-size: 14.2px; }
.spec-table th, .spec-table td { padding: 13px 20px; text-align: left; border-bottom: 1px solid var(--line-2); }
.spec-table th {
  background: var(--bg-soft); color: var(--ink); font-weight: 600; width: 34%;
  border-right: 1px solid var(--line-2);
}
.spec-table td { color: var(--ink-2); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }
.spec-table tbody tr:hover td { background: #fafcfe; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; }
.feature-list li {
  display: flex; gap: 12px; padding: 12px 0; font-size: 14.3px;
  color: var(--ink-2); line-height: 1.8; border-bottom: 1px dashed var(--line);
}
.feature-list li:last-child { border-bottom: none; }
.feature-list .dot {
  width: 21px; height: 21px; border-radius: 50%; background: var(--brand-light);
  color: var(--brand); font-size: 11.5px; font-weight: 700; flex: none; margin-top: 4px;
  display: flex; align-items: center; justify-content: center;
}
.pkg-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.pkg-item {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 18px;
  text-align: center; background: #fff; transition: all .28s;
}
.pkg-item:hover { border-color: var(--brand); box-shadow: var(--shadow-sm); }
.pkg-item svg { width: 34px; height: 42px; margin: 0 auto 12px; }
.pkg-item strong { display: block; font-size: 16.5px; color: var(--ink); margin-bottom: 4px; }
.pkg-item span { font-size: 12.5px; color: var(--ink-4); }

.notice-box {
  background: #fff8ed; border: 1px solid #ffe0b2; border-radius: var(--radius);
  padding: 22px 24px; display: flex; gap: 15px;
}
.notice-box svg { width: 22px; height: 22px; flex: none; stroke: #e8890c; margin-top: 2px; }
.notice-box h4 { font-size: 15px; color: #a35c00; margin-bottom: 7px; }
.notice-box p { font-size: 14px; color: #7a4d0f; line-height: 1.85; }

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

/* ---------- 新闻列表 ---------- */
.news-layout { display: grid; grid-template-columns: 1fr 300px; gap: 46px; align-items: start; }
.news-list-item {
  display: grid; grid-template-columns: 230px 1fr; gap: 26px; padding: 26px 0;
  border-bottom: 1px solid var(--line); transition: all .3s;
}
.news-list-item:first-child { padding-top: 0; }
.nli-media { border-radius: var(--radius); overflow: hidden; height: 150px; }
.nli-media svg { width: 100%; height: 100%; }
.nli-body h3 { font-size: 19px; margin-bottom: 10px; line-height: 1.5; transition: color .25s; }
.news-list-item:hover h3 { color: var(--brand); }
.nli-meta { display: flex; gap: 16px; font-size: 12.5px; color: var(--ink-4); margin-bottom: 11px; }
.nli-meta span { display: inline-flex; align-items: center; gap: 5px; }
.nli-meta svg { width: 13px; height: 13px; }
.nli-body p {
  font-size: 14px; color: var(--ink-3); line-height: 1.82;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.nli-more { display: inline-block; margin-top: 13px; font-size: 13.5px; color: var(--brand); }

.sidebar-box {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 24px; margin-bottom: 24px;
}
.sidebar-box h3 {
  font-size: 16.5px; margin-bottom: 17px; padding-bottom: 13px;
  border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 9px;
}
.sidebar-box h3::before { content: ''; width: 3px; height: 15px; background: var(--brand); border-radius: 2px; }
.side-cat li a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 0; font-size: 14px; color: var(--ink-2); border-bottom: 1px dashed var(--line);
}
.side-cat li:last-child a { border-bottom: none; }
.side-cat li a:hover { color: var(--brand); padding-left: 5px; }
.side-cat em { font-style: normal; font-size: 12px; color: var(--ink-4); }
.side-news li { padding: 12px 0; border-bottom: 1px dashed var(--line); }
.side-news li:last-child { border-bottom: none; }
.side-news a { font-size: 13.8px; color: var(--ink-2); line-height: 1.6; display: block; }
.side-news a:hover { color: var(--brand); }
.side-news time { display: block; font-size: 12px; color: var(--ink-4); margin-top: 5px; }
.side-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.side-tags a {
  padding: 5px 12px; background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: 5px; font-size: 12.5px; color: var(--ink-2);
}
.side-tags a:hover { background: var(--brand); border-color: var(--brand); color: #fff; }
.side-contact { background: linear-gradient(140deg, #0a54a6, #0782b0); color: #fff; border: none; }
.side-contact h3 { color: #fff; border-bottom-color: rgba(255,255,255,.2); }
.side-contact h3::before { background: #fff; }
.side-contact p { font-size: 13.5px; color: rgba(255,255,255,.82); line-height: 1.8; margin-bottom: 16px; }
.side-contact strong { display: block; font-size: 21px; margin-bottom: 16px; letter-spacing: .3px; }

/* ---------- 文章正文 ---------- */
.article-head { padding-bottom: 26px; border-bottom: 1px solid var(--line); margin-bottom: 30px; }
.article-head h1 { font-size: 31px; line-height: 1.4; margin-bottom: 16px; letter-spacing: -.4px; }
.article-meta { display: flex; gap: 20px; font-size: 13px; color: var(--ink-4); flex-wrap: wrap; }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta svg { width: 14px; height: 14px; }
.article-summary {
  background: var(--bg-soft); border-left: 3px solid var(--accent); padding: 18px 22px;
  border-radius: 0 var(--radius) var(--radius) 0; font-size: 14.5px;
  color: var(--ink-2); line-height: 1.9; margin-bottom: 32px;
}
.article-body p { font-size: 15.2px; line-height: 2.05; color: var(--ink-2); margin-bottom: 20px; }
.article-body h3 {
  font-size: 20px; margin: 38px 0 16px; padding-left: 13px;
  border-left: 4px solid var(--brand); line-height: 1.4;
}
.article-body ul { margin: 0 0 22px; }
.article-body ul li {
  position: relative; padding: 8px 0 8px 24px; font-size: 15px;
  color: var(--ink-2); line-height: 1.9;
}
.article-body ul li::before {
  content: ''; position: absolute; left: 4px; top: 18px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--accent);
}
.article-nav {
  display: flex; justify-content: space-between; gap: 20px; margin-top: 46px;
  padding-top: 26px; border-top: 1px solid var(--line); font-size: 14px; flex-wrap: wrap;
}
.article-nav a { color: var(--ink-2); max-width: 46%; }
.article-nav a:hover { color: var(--brand); }
.article-nav small { display: block; font-size: 12px; color: var(--ink-4); margin-bottom: 4px; }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: start; }
.contact-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-bottom: 30px; }
.contact-card {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px;
  background: #fff; transition: all .3s var(--ease);
}
.contact-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: transparent; }
.contact-card .ci {
  width: 42px; height: 42px; border-radius: 10px; background: var(--brand-light);
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
}
.contact-card .ci svg { width: 20px; height: 20px; stroke: var(--brand); }
.contact-card h4 { font-size: 14px; color: var(--ink-3); font-weight: 500; margin-bottom: 6px; }
.contact-card strong { font-size: 16.5px; color: var(--ink); display: block; line-height: 1.6; word-break: break-all; }

.form-box {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 34px; box-shadow: var(--shadow-sm);
}
.form-box h3 { font-size: 21px; margin-bottom: 8px; }
.form-box > p { font-size: 14px; color: var(--ink-3); margin-bottom: 26px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-item { margin-bottom: 18px; }
.form-item label { display: block; font-size: 13.5px; color: var(--ink-2); margin-bottom: 8px; font-weight: 500; }
.form-item label i { color: #e5484d; font-style: normal; margin-left: 2px; }
.form-item input, .form-item select, .form-item textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 14.5px; font-family: inherit; color: var(--ink); background: #fff;
  transition: all .25s; outline: none;
}
.form-item textarea { resize: vertical; min-height: 116px; line-height: 1.7; }
.form-item input:focus, .form-item select:focus, .form-item textarea:focus {
  border-color: var(--brand); box-shadow: 0 0 0 3px rgba(10, 84, 166, .1);
}
.form-tip { font-size: 12.5px; color: var(--ink-4); margin-top: 14px; text-align: center; }
.form-msg {
  display: none; padding: 12px 16px; border-radius: 8px; font-size: 14px;
  margin-bottom: 18px; background: #e8f8f0; color: #17734b; border: 1px solid #b7e4cd;
}
.form-msg.show { display: block; }

.map-box {
  border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden;
  margin-top: 46px; background: #fff; box-shadow: 0 18px 44px rgba(10, 40, 80, .08);
}
.map-embed { position: relative; width: 100%; padding-top: 50%; background: var(--bg-soft); }
.map-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }
.map-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 22px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.map-bar .mb-addr { font-size: 14px; color: var(--ink-3); line-height: 1.7; }
.map-bar .mb-addr b { display: block; color: var(--ink); font-size: 15.5px; margin-bottom: 2px; }
.map-bar .mb-addr span { font-size: 13px; color: var(--ink-4); }

/* ---------- 关于我们页 ---------- */
.about-hero-text { max-width: 820px; margin: 0 auto; text-align: center; }
.about-hero-text p { font-size: 16px; line-height: 2.05; color: var(--ink-2); }
.timeline { max-width: 780px; margin: 0 auto; position: relative; padding-left: 30px; }
.timeline::before { content: ''; position: absolute; left: 6px; top: 8px; bottom: 8px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ''; position: absolute; left: -30px; top: 7px; width: 14px; height: 14px;
  border-radius: 50%; background: #fff; border: 3px solid var(--brand);
}
.tl-year { font-size: 19px; font-weight: 700; color: var(--brand); margin-bottom: 6px; }
.tl-item p { font-size: 14.5px; color: var(--ink-3); line-height: 1.85; }
.honor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.honor-item {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 30px 26px; text-align: center; transition: all .3s;
}
.honor-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: transparent; }
.honor-item svg { width: 42px; height: 42px; margin: 0 auto 16px; stroke: var(--brand); }
.honor-item h3 { font-size: 16.5px; margin-bottom: 8px; }
.honor-item p { font-size: 13.5px; color: var(--ink-3); line-height: 1.8; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-deep); color: #93a8bd; padding: 62px 0 0; font-size: 14px; }
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 44px; padding-bottom: 46px;
}
.footer h4 { color: #fff; font-size: 15.5px; margin-bottom: 20px; font-weight: 600; }
.footer-brand .logo-text strong { color: #fff; }
.footer-brand .logo-text small { color: #667e96; }
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand p { font-size: 13.5px; line-height: 1.9; color: #7e94aa; margin-bottom: 18px; }
.footer-links li { margin-bottom: 11px; }
.footer-links a { color: #93a8bd; font-size: 13.8px; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-links a.footer-more { color: #9fd4ee; font-weight: 600; }
.footer-links a.footer-more:hover { color: #fff; }
.footer-contact li {
  display: flex; gap: 11px; margin-bottom: 14px; font-size: 13.5px;
  color: #93a8bd; line-height: 1.7; align-items: flex-start;
}
.footer-contact svg { width: 16px; height: 16px; flex: none; margin-top: 3px; opacity: .6; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08); padding: 22px 0;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 12.8px; color: #6b8199;
}
.footer-bottom a { color: #6b8199; }
.footer-bottom a:hover { color: #fff; }
.footer-seo { padding: 18px 0; border-top: 1px solid rgba(255,255,255,.06); font-size: 12.3px; color: #55697e; line-height: 1.9; }
.footer-seo a { color: #55697e; }
.footer-seo a:hover { color: #93a8bd; }

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed; right: 26px; bottom: 26px; width: 46px; height: 46px;
  border-radius: 11px; background: var(--brand); color: #fff; border: none;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  box-shadow: 0 6px 20px rgba(10, 84, 166, .32); opacity: 0; visibility: hidden;
  transform: translateY(12px); transition: all .32s var(--ease); z-index: 90;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--brand-dark); transform: translateY(-3px); }
.to-top svg { width: 19px; height: 19px; }

/* ---------- 滚动动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 空状态 ---------- */
.empty { text-align: center; padding: 70px 20px; color: var(--ink-4); }
.empty svg { width: 56px; height: 56px; margin: 0 auto 16px; opacity: .35; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1100px) {
  .product-grid, .adv-grid, .related-grid, .cat-ov-grid { grid-template-columns: repeat(2, 1fr); }
  .pd-top { grid-template-columns: 360px 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .news-layout { grid-template-columns: 1fr 260px; gap: 32px; }
}

@media (max-width: 900px) {
  .topbar { display: none; }
  .header .wrap { height: 66px; }
  .burger { display: block; }
  .header-cta .tel-box { display: none; }
  .nav {
    position: fixed; top: 66px; left: 0; right: 0; bottom: 0; background: #fff;
    flex-direction: column; align-items: stretch; gap: 0; padding: 12px 20px 40px;
    overflow-y: auto; -webkit-overflow-scrolling: touch; transform: translateX(100%); transition: transform .34s var(--ease);
    border-top: 1px solid var(--line);
  }
  .nav.open { transform: translateX(0); }
  .nav > li > a { height: auto; line-height: 1.6; padding: 15px 4px; border-bottom: 1px solid var(--line-2); font-size: 16px; }
  .nav > li > a::after { display: none; }
  .dropdown {
    position: static; transform: none; opacity: 1; visibility: visible; box-shadow: none;
    border: none; border-bottom: 1px solid var(--line-2); border-radius: 0;
    padding: 4px 0 12px 14px; min-width: auto; display: none;
  }
  .nav-item.expand .dropdown { display: block; }

  /* mega 菜单移动端 */
  .dropdown.mega { position: static; transform: none; width: auto; left: auto; padding: 6px 0 10px; }
  .mega-grid { flex-direction: column; gap: 0; }
  .mega-cats { width: auto; border-right: none; border-bottom: 1px solid var(--line-2); }
  .mega-cat-label { font-size: 15px; }
  .mega-pane { display: none; }
  .mega-all { margin-top: 8px; }

  .hero .wrap { grid-template-columns: 1fr; min-height: auto; gap: 40px; text-align: center; padding-top: 52px; padding-bottom: 52px; }
  .hero h1 { font-size: 33px; }
  .hero p.lead { font-size: 15.5px; margin-left: auto; margin-right: auto; }
  .hero-btns, .hero-tags { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-visual svg { max-width: 250px; }

  .stats .wrap { grid-template-columns: repeat(2, 1fr); }
  .stat-item { padding: 30px 12px; }
  .stat-item:nth-child(3)::before, .stat-item:nth-child(1)::before { display: none; }
  .stat-num { font-size: 33px; }

  .section { padding: 58px 0; }
  .section-head h2 { font-size: 26px; }
  .app-grid, .news-grid, .honor-grid { grid-template-columns: 1fr; }
  .about-flex { grid-template-columns: 1fr; gap: 36px; }
  .about-text h2 { font-size: 25px; }

  .pd-top { grid-template-columns: 1fr; }
  .pd-gallery { min-height: 280px; padding: 26px; }
  .pd-gallery svg { max-height: 230px; }
  .pd-info h1 { font-size: 25px; }
  .two-col { grid-template-columns: 1fr; gap: 26px; }
  .pkg-grid { grid-template-columns: repeat(2, 1fr); }
  .spec-table th, .spec-table td { padding: 11px 14px; font-size: 13.5px; }

  .news-layout { grid-template-columns: 1fr; }
  .news-list-item { grid-template-columns: 1fr; gap: 16px; }
  .nli-media { height: 178px; }
  .article-head h1 { font-size: 24px; }
  .article-body p, .article-body ul li { font-size: 14.8px; }

  .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .page-banner { padding: 44px 0 40px; }
  .page-banner h1 { font-size: 27px; }
  .cta-band h2 { font-size: 23px; }
  .form-box { padding: 24px; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .product-grid, .adv-grid, .related-grid, .contact-cards, .pkg-grid, .cat-ov-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
  .stats .wrap { grid-template-columns: 1fr 1fr; }
  .pd-keyfacts { grid-template-columns: 1fr; }
  .filter-count { width: 100%; margin-left: 0; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .map-embed { padding-top: 88%; }
  .map-bar { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 360px) {
  .wrap { padding: 0 14px; }
  .hero h1 { font-size: 25px; }
  .hero p.lead { font-size: 14.5px; }
  .hero-visual svg { max-width: 200px; }
  .page-banner { padding: 38px 0 34px; }
  .page-banner h1 { font-size: 23px; }
  .section { padding: 48px 0; }
  .section-head h2 { font-size: 23px; }
  .market-head h2 { font-size: 25px; }
  .nav > li > a { font-size: 15px; padding: 13px 4px; }
  .pd-info h1 { font-size: 22px; }
  .stat-num { font-size: 28px; }
  .cta-band h2 { font-size: 21px; }
  .footer-grid { gap: 26px; }
  .spec-table th, .spec-table td { padding: 10px 11px; font-size: 12.5px; }
}

/* ---------- 打印 ---------- */
@media print {
  .header, .topbar, .footer, .to-top, .cta-band, .hero-visual { display: none; }
  body { font-size: 12pt; color: #000; }
  .section { padding: 12pt 0; }
}

/* ---------- 实时行情 ---------- */
.market-head { max-width: 720px; margin: 0 auto 34px; text-align: center; }
.market-head .eyebrow { display: inline-block; color: var(--brand); font-weight: 700; letter-spacing: 2px; font-size: 12.5px; text-transform: uppercase; margin-bottom: 12px; }
.market-head h2 { font-size: 30px; letter-spacing: -.4px; margin-bottom: 14px; }
.market-intro { color: var(--ink-3); font-size: 15px; line-height: 1.85; }
.market-embed {
  position: relative; width: 100%; padding-top: 62%;
  background: var(--bg-soft); border: 0; border-radius: 16px;
  overflow: hidden; box-shadow: 0 18px 44px rgba(10, 40, 80, .08);
}
.market-embed iframe {
  position: absolute; inset: 0; width: 100%; height: 100%;
  border: 0; display: block; background: #fff;
}
.market-tip {
  display: flex; align-items: center; gap: 8px; margin-top: 18px;
  color: var(--ink-4); font-size: 13px;
}
.market-tip svg { width: 16px; height: 16px; color: var(--brand); flex: none; }
@media (max-width: 768px) {
  .market-embed { padding-top: 125%; }
}