/* ============================================================
   密理博仪器 Minipore · 企业官网样式
   简洁 / 科技感 / 蓝色水处理主题
   ============================================================ */
:root {
  --primary: #145eb4;
  --primary-dark: #0a3a78;
  --accent: #3d9bf0;
  --teal: #26c6da;
  --text: #1f2937;
  --muted: #64748b;
  --bg: #ffffff;
  --bg-soft: #f2f7fd;
  --border: #e0eaf6;
  --grad: linear-gradient(135deg, #0d3f85 0%, #1f7ae0 100%);
  --shadow-sm: 0 2px 8px rgba(18, 86, 168, .08);
  --shadow-md: 0 10px 30px rgba(18, 86, 168, .14);
  --radius: 10px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.75;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: 1440px; margin: 0 auto; padding: 0 32px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block; padding: 11px 30px; border-radius: 6px;
  font-size: 15px; letter-spacing: 1px; cursor: pointer; border: 1px solid transparent;
  transition: all .25s;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 4px 14px rgba(30, 120, 220, .3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(30, 120, 220, .42); }

/* ---------- 顶栏 ---------- */
.topbar { background: #e4eef9; color: #3d5a77; font-size: 13px; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; height: 36px; }
.topbar .tb-right { display: flex; gap: 22px; }
.topbar .tb-right b { color: var(--primary); font-weight: 600; }

/* ---------- 导航 ---------- */
.navbar {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--border);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 12px; min-width: 0; }
.logo .logo-img { position: relative; display: block; width: 58px; height: 58px; flex: 0 0 auto; overflow: hidden; border: 2px solid #d8e5f2; border-radius: 50%; background: #edf4fb; }
.logo .logo-img img, .footer-logo .logo-img img { position: absolute; left: -15.4%; top: -5.1%; width: 285.4%; max-width: none; mix-blend-mode: multiply; }
.logo-company { display: flex; flex-direction: column; justify-content: center; min-width: 0; padding-right: 12px; border-right: 1px solid #d9e5f2; line-height: 1.2; }
.logo-company .cn { color: var(--primary-dark); font-size: 18px; font-weight: 700; letter-spacing: .4px; white-space: nowrap; }
.logo-company .en { color: var(--muted); font-size: 7.5px; letter-spacing: .35px; margin-top: 6px; white-space: nowrap; }
.brand-wordmark { width: 150px; height: auto; flex: 0 0 auto; }
.nav-links { display: flex; gap: 6px; }
.nav-links a {
  padding: 8px 18px; font-size: 15.5px; color: #333; border-radius: 6px; position: relative;
  transition: color .2s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 18px; right: 18px; bottom: 2px; height: 2px;
  background: var(--grad); border-radius: 2px; transform: scaleX(0); transition: transform .25s;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-links a.active::after, .nav-links a:hover::after { transform: scaleX(1); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--primary-dark); margin: 5px 0; transition: .3s; }

/* ---------- 轮播（通用） ---------- */
.carousel { position: relative; overflow: hidden; }
.c-track { display: flex; transition: transform .6s cubic-bezier(.4, 0, .2, 1); }
.c-slide { flex: 0 0 100%; }
.c-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%; border: none; cursor: pointer;
  background: rgba(255,255,255,.85); color: var(--primary-dark); font-size: 20px;
  display: flex; align-items: center; justify-content: center; z-index: 5;
  box-shadow: var(--shadow-sm); transition: background .2s;
}
.c-arrow:hover { background: #fff; }
.c-arrow.prev { left: 16px; }
.c-arrow.next { right: 16px; }
.c-dots { position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 5; }
.c-dots button {
  width: 26px; height: 4px; border-radius: 2px; border: none; cursor: pointer;
  background: rgba(255,255,255,.45); transition: background .25s, width .25s;
}
.c-dots button.on { background: #fff; width: 40px; }

/* ---------- 首页横幅 ---------- */
.hero { height: clamp(420px, 35.7vw, 915px); background: #e9f0f5; }
.hero .c-slide {
  position: relative; height: clamp(420px, 35.7vw, 915px); background: #e9f0f5 center / contain no-repeat; background-position: center;
  display: flex; align-items: center;
}
.hero .c-slide::before { content: none; }
.hero .c-slide-water-quality::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(240,249,255,.93), rgba(240,249,255,.70) 30%, transparent 55%); }
@media (max-width: 640px) {
  .hero .c-slide.c-slide-water-quality { background-color: #e7f4fc; background-size: auto 210px; background-position: right bottom; align-items: flex-start; padding-top: 22px; }
  .hero .c-slide-water-quality::before { background: linear-gradient(180deg, #e7f4fc, rgba(231,244,252,.95) 35%, transparent 65%); }
  .hero .c-slide-water-quality .hero-copy { margin: 0 auto; }
  .hero .c-slide-water-quality .hero-copy p { margin-top: 8px; }
  .hero .c-slide-water-quality .hero-copy span { margin-top: 8px; padding-top: 7px; }
}
.hero .grid-lines {
  display: none;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 56px 56px;
}
.hero-copy { position: relative; z-index: 2; width: min(calc(100% - 64px), 1500px); margin: auto; color: #1d2b28; }
.hero-copy h2 { font-size: clamp(30px, 2.65vw, 52px); font-weight: 700; line-height: 1.25; letter-spacing: .04em; }
.hero-copy p { margin-top: 16px; font-size: clamp(15px, 1.06vw, 21px); line-height: 1.5; }
.hero-copy span { display: inline-block; margin-top: 24px; padding-top: 13px; border-top: 2px solid #62aa55; color: #41635a; font-size: clamp(12px, .78vw, 15px); letter-spacing: .04em; }
.hero-caption { position: relative; z-index: 2; color: #fff; max-width: 640px; }
.hero-caption .en { font-size: 13px; letter-spacing: 4px; color: #9cc9f5; text-transform: uppercase; margin-bottom: 12px; }
.hero-caption h2 { font-size: 42px; line-height: 1.3; margin-bottom: 14px; letter-spacing: 1px; }
.hero-caption p { font-size: 16.5px; color: rgba(255,255,255,.88); margin-bottom: 28px; max-width: 540px; }
.hero-caption .btn + .btn { margin-left: 12px; }
.hero-caption .hl { color: #6fc6ff; }

/* ---------- 区块标题 ---------- */
.section { padding: 72px 0; }
.section.soft { background: var(--bg-soft); }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 42px; }
.sec-en { font-size: 12px; letter-spacing: 4px; color: var(--accent); text-transform: uppercase; font-weight: 600; }
.sec-head h2 { font-size: 30px; color: var(--primary-dark); letter-spacing: 1px; margin-top: 4px; }
.sec-head h2::after { content: ""; display: block; width: 44px; height: 3px; background: var(--grad); border-radius: 2px; margin-top: 12px; }
.sec-desc { color: var(--muted); margin-top: 10px; max-width: 640px; }
.more-link { color: var(--primary); font-size: 14.5px; white-space: nowrap; }
.more-link:hover { color: var(--accent); }

/* ---------- 产品卡片（宽屏横版大图样式） ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
#products .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.p-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform .3s, box-shadow .3s, border-color .3s; display: block;
}
.p-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.p-card .thumb { aspect-ratio: 4/3; background: #fff; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.p-card .thumb img { width: 100%; height: 100%; object-fit: contain; padding: 10px; transition: transform .45s; }
.p-card .thumb img.cover-fill { object-fit: cover; padding: 0; }
.p-card .thumb img.cover-contain { object-fit: contain; padding: 10px; }
.p-card:hover .thumb img { transform: scale(1.05); }
.p-card .body { padding: 16px 18px 20px; background: #fff; }
.p-card .cat-tag {
  display: block; font-size: 11px; letter-spacing: 2.5px; color: var(--accent);
  text-transform: uppercase; font-weight: 600; margin-bottom: 7px; border: none; padding: 0;
}
.p-card .name { font-size: 16.5px; font-weight: 700; color: #26364d; line-height: 1.45; }
.p-card:hover .name { color: var(--primary); }
.p-card .brief {
  font-size: 13px; color: var(--muted); margin-top: 7px; line-height: 1.65;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* ---------- 首页 · 公司简介 ---------- */
.about-wrap { display: grid; grid-template-columns: minmax(480px, 47%) 1fr; gap: 42px; align-items: stretch; }
.about-carousel { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); height: 100%; min-height: 460px; }
.about-carousel .c-slide { height: 100%; }
.about-carousel .c-track { height: 100%; }
.about-carousel img { width: 100%; height: 100%; object-fit: cover; }
.about-carousel .c-arrow { width: 40px; height: 40px; }
.about-body h3 { font-size: 24px; color: var(--primary-dark); margin-bottom: 16px; }
.about-body p { color: #475569; text-align: justify; margin-bottom: 14px; }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 22px 0 26px; }
.about-stats .st { background: var(--bg-soft); border: 1px solid var(--border); border-radius: 8px; padding: 12px 8px; text-align: center; }
.about-stats .num { font-size: 24px; font-weight: 700; color: var(--primary); }
.about-stats .num i { font-style: normal; font-size: 14px; }
.about-stats .lbl { font-size: 12.5px; color: var(--muted); margin-top: 2px; }

/* ---------- 首页 · 技术文章 ---------- */
.news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.n-item {
  display: grid; grid-template-columns: 250px 1fr; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  transition: box-shadow .3s, transform .3s;
}
.n-item:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.n-item .cover { aspect-ratio: 1 / 1; min-height: 0; overflow: hidden; }
.n-item .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.n-item:hover .cover img { transform: scale(1.06); }
.n-item .body { padding: 18px 22px; display: flex; flex-direction: column; }
.n-item .date { font-size: 12.5px; color: var(--accent); margin-bottom: 6px; }
.n-item .title { font-size: 16.5px; font-weight: 600; color: #26364d; line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.n-item:hover .title { color: var(--primary); }
.n-item .sub { font-size: 13.5px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- CTA 横条 ---------- */

/* ---------- 页脚 ---------- */
footer { background: #e9f1fa; color: #4a6076; font-size: 14px; }
.footer-main { display: grid; grid-template-columns: 1.4fr 1.5fr .8fr 1.1fr; gap: 36px; padding: 56px 0 44px; }
.footer-main h4 { color: var(--primary-dark); font-size: 16px; margin-bottom: 16px; letter-spacing: 1px; }
.footer-main p { margin-bottom: 8px; }
.footer-main a { color: #3d5a77; }
.footer-main a:hover { color: var(--primary); }
.footer-main ul li { margin-bottom: 9px; }
.footer-products ul { columns: 2; column-gap: 24px; }
.footer-products ul li { break-inside: avoid; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-logo .logo-img { position: relative; display: block; width: 48px; height: 48px; flex: 0 0 auto; overflow: hidden; border: 2px solid #d8e5f2; border-radius: 50%; background: #edf4fb; }
.footer-logo .cn { color: var(--primary-dark); font-size: 17px; font-weight: 700; letter-spacing: 2px; }
.footer-bottom { border-top: 1px solid rgba(18, 86, 168, .16); padding: 18px 0; text-align: center; font-size: 13px; color: #7e93a8; }

/* ---------- 内页页头 ---------- */
.page-hero { background: #e7f4fc; color: var(--primary-dark); min-height: 437px; padding: 0; display: flex; align-items: center; position: relative; overflow: hidden; background-size: cover; background-position: center; }
.page-hero-about { background-image: url('../images/banners/about-v3.png'); }
.page-hero-products { background-image: url('../images/banners/products-v3.png'); }
.page-hero-news { background-image: url('../images/banners/news-v3.png'); }
.page-hero-contact { background-image: url('../images/banners/contact-v3.png'); }
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, #e7f4fc 0, #e7f4fc calc(100% - 1311px), transparent calc(100% - 867px));
}
@media (max-width: 640px) {
  .page-hero { min-height: 373px; background-size: auto 240px; background-position: right bottom; background-repeat: no-repeat; align-items: flex-start; padding-top: 20px; }
  .page-hero::before { background: linear-gradient(180deg, #e7f4fc, rgba(231,244,252,.94) 30%, transparent 65%); }
  .page-hero h1 { font-size: 28px; }
  .page-hero .crumb { margin-top: 8px; }
}
.page-hero .container { position: relative; width: 100%; }
.page-hero .en { font-size: 12px; letter-spacing: 5px; color: #337baa; text-transform: uppercase; }
.page-hero h1 { font-size: 34px; margin-top: 8px; letter-spacing: 2px; }
.page-hero .crumb { margin-top: 14px; font-size: 13.5px; color: #4c647a; }
.page-hero .crumb a:hover { color: var(--primary); }
.page-hero { background-size: auto 100%; background-position: right center; background-repeat: no-repeat; }
@media (max-width: 640px) {
  .page-hero { background-size: auto 240px; background-position: right bottom; }
  .page-hero h1 { font-size: 28px; }
}

/* ---------- 关于我们 ---------- */
.about-intro .txt h3 { font-size: 21px; color: var(--primary-dark); margin: 26px 0 10px; }
.about-intro .txt h3:first-child { margin-top: 0; }
.about-intro .txt h3 span { display: inline-block; width: 8px; height: 8px; border-radius: 2px; background: var(--grad); margin-right: 10px; vertical-align: 3px; }
.about-intro .txt p { color: #475569; text-align: justify; margin-bottom: 10px; }

.stat-band { background: var(--bg-soft); border-block: 1px solid var(--border); padding: 44px 0; }
.stat-band .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat-band .num { font-size: 40px; font-weight: 700; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-band .num i { font-style: normal; font-size: 20px; }
.stat-band .lbl { color: var(--muted); margin-top: 4px; font-size: 14px; }

.env-carousel { border-radius: 16px; overflow: hidden; background: #dce8f5; box-shadow: var(--shadow-md); }
.env-carousel .c-slide { height: clamp(360px, 46vw, 680px); }
.env-carousel figure { width: 100%; height: 100%; }
.env-carousel img { width: 100%; height: 100%; object-fit: cover; }
.env-carousel .c-arrow { opacity: 0; transition: opacity .25s, background .2s; }
.env-carousel:hover .c-arrow, .env-carousel:focus-within .c-arrow { opacity: 1; }
.env-carousel .c-dots { bottom: 20px; }

.honor-carousel .c-track { padding: 6px 2px; }
.honor-carousel .c-slide { flex: 0 0 25%; padding: 0 12px; }
.honor-card { background: transparent; border: none; padding: 0; text-align: center; }
.honor-card img { width: 100%; height: 400px; object-fit: contain; }
.sec-desc.one-line { max-width: none; white-space: nowrap; }
@media (max-width: 1100px) { .sec-desc.one-line { white-space: normal; } }

/* ---------- 产品中心页 ---------- */
.products-layout { display: grid; grid-template-columns: 240px 1fr; gap: 32px; align-items: start; }
.cat-side { position: sticky; top: calc(var(--product-navbar-height, 73px) + var(--product-breadcrumb-height, 51px) + 16px); }
.cat-side .hd { background: var(--grad); color: #fff; padding: 16px 20px; border-radius: 10px 10px 0 0; font-size: 17px; letter-spacing: 1px; }
.cat-side ul { border: 1px solid var(--border); border-top: none; border-radius: 0 0 10px 10px; overflow: hidden; background: #fff; }
.cat-side li button {
  width: 100%; text-align: left; padding: 13px 20px; border: none; background: none;
  font-size: 15px; cursor: pointer; color: #33445c; display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--border); transition: all .2s;
}
.cat-side li:last-child button { border-bottom: none; }
.cat-side li button:hover, .cat-side li button.on { background: var(--bg-soft); color: var(--primary); font-weight: 600; }
.cat-side li button .cnt { font-size: 12px; color: var(--muted); }
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 26px; }
.filter-bar button {
  padding: 7px 18px; border-radius: 20px; border: 1px solid var(--border); background: #fff;
  cursor: pointer; font-size: 13.5px; color: #475569; transition: all .2s;
}
.filter-bar button.on, .filter-bar button:hover { background: var(--grad); color: #fff; border-color: transparent; }

/* ---------- 产品详情 ---------- */
.breadcrumb { padding: 18px 0 0; font-size: 13.5px; color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.product-breadcrumb { position: sticky; top: var(--product-navbar-height, 73px); z-index: 90; padding: 0; background: #fff; border-bottom: 1px solid #e2ecf6; }
.product-breadcrumb .container { min-height: 50px; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; padding-top: 10px; padding-bottom: 10px; }
.product-breadcrumb a { color: #556274; }
.product-breadcrumb a:hover { color: var(--accent); }
.product-breadcrumb .product-current-category { color: var(--primary); font-weight: 600; }
.pd-top { display: grid; grid-template-columns: 480px 1fr; gap: 46px; margin-top: 22px; align-items: start; }
.pd-gallery .main-view { border: 1px solid var(--border); border-radius: var(--radius); background: #fff; aspect-ratio: 1/1; display: flex; align-items: center; justify-content: center; padding: 26px; }
.pd-gallery .main-view img { max-height: 100%; object-fit: contain; }
.pd-gallery.full-gallery .main-view { aspect-ratio: 3 / 2; padding: 0; overflow: hidden; display: block; background: linear-gradient(180deg, #edf6ff 0%, #e4f0fb 100%); }
.pd-gallery.full-gallery .main-view img { width: 100%; height: 100%; max-height: none; object-fit: contain; display: block; }
.pd-gallery.full-gallery .main-view[data-fit="cover"] img { object-fit: cover; }
.pd-gallery.full-gallery .main-view:not([data-fit="cover"]) img { mix-blend-mode: multiply; }
.pd-gallery.full-gallery .main-view img[src*="edi-power-fep-500n-front-back-v2.png"],
.pd-gallery.full-gallery .pd-thumbs img[src*="edi-power-fep-500n-front-back-v2.png"] { mix-blend-mode: normal; }
.pd-gallery.full-gallery .pd-thumbs { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.pd-gallery.full-gallery.six-gallery .pd-thumbs { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.pd-gallery.full-gallery.four-gallery .pd-thumbs { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.pd-gallery.full-gallery .pd-thumbs img { aspect-ratio: 3 / 2; padding: 0; object-fit: cover; }
.pd-gallery.full-gallery .pd-thumbs img[data-fit="contain"] { background: #edf6ff; object-fit: contain; mix-blend-mode: multiply; }
/* Crop stray neighboring labels from legacy multi-electrode sheets while keeping each sensor's dimensions. */
.pd-gallery.full-gallery :is(.main-view img, .pd-thumbs img)[src*="min230-tds-2.png"] { clip-path: inset(0 0 9% 0); }
.pd-gallery.full-gallery .main-view img[src*="min5320-4.png"] { clip-path: polygon(25% 0, 70% 0, 70% 35%, 72.5% 35%, 72.5% 65%, 70% 65%, 70% 100%, 25% 100%, 25% 52%, 30% 52%, 30% 40%, 25% 40%); }
.pd-gallery.full-gallery .pd-thumbs img[src*="min5320-4.png"] { clip-path: inset(0 30% 0 25%); }
.pd-gallery.full-gallery :is(.main-view img, .pd-thumbs img)[src*="min8500-ph-2.png"] { clip-path: inset(8% 16% 6% 8%); }
.pd-gallery.full-gallery :is(.main-view img, .pd-thumbs img)[src*="min8500-ph-3.png"] { clip-path: inset(0 8% 10% 0); }
.pd-gallery.full-gallery :is(.main-view img, .pd-thumbs img)[src*="min8500-ph-4.png"] { clip-path: inset(0 4% 8% 0); }
.pd-gallery.full-gallery :is(.main-view img, .pd-thumbs img)[src*="min8500-orp-2.png"] { clip-path: inset(0 0 10% 0); }
.pd-gallery.full-gallery :is(.main-view img, .pd-thumbs img)[src*="min2000-fluor-2.png"] { clip-path: inset(0 14% 0 0); }
.pd-gallery.full-gallery :is(.main-view img, .pd-thumbs img)[src*="min8300-ozone-2.png"] { clip-path: inset(10% 22% 4% 0); }
.pd-thumbs { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; margin-top: 12px; }
.pd-thumbs img {
  border: 2px solid var(--border); border-radius: 8px; cursor: pointer; aspect-ratio: 1/1;
  object-fit: contain; background: #fff; padding: 6px; transition: border-color .2s;
}
.pd-thumbs img.on, .pd-thumbs img:hover { border-color: var(--accent); }
.pd-info .cat-tag { display: inline-block; font-size: 12.5px; color: var(--accent); border: 1px solid rgba(61,155,240,.5); border-radius: 20px; padding: 2px 12px; }
.pd-info h1 { font-size: 27px; color: var(--primary-dark); margin: 12px 0 6px; }
.pd-info .tagline { color: var(--muted); font-size: 15px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.pd-info .feat { margin-top: 18px; }
.pd-info .feat li { padding-left: 26px; position: relative; margin-bottom: 9px; color: #37455c; }
.pd-info .feat li::before {
  content: ""; position: absolute; left: 4px; top: 9px; width: 7px; height: 7px;
  border-radius: 50%; background: var(--grad);
}
.pd-sections { margin-top: 56px; }
.pd-tab-nav { display: flex; flex-wrap: wrap; border-bottom: 2px solid var(--border); gap: 8px; }
.pd-tab-nav button {
  padding: 12px 26px; background: none; border: none; cursor: pointer; font-size: 16px;
  color: var(--muted); position: relative; flex: 0 0 auto;
}
.pd-tab-nav button.on { color: var(--primary); font-weight: 600; }
.pd-tab-nav button.on::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2.5px; background: var(--grad);
}
.pd-tab-pane { display: none; padding: 28px 4px; }
.pd-tab-pane.on { display: block; }
.pd-tab-pane p { color: #37455c; text-align: justify; margin-bottom: 12px; }
.pd-tab-pane h4 { color: var(--primary-dark); margin: 18px 0 8px; font-size: 16.5px; }
.pd-tab-pane h4 span { display: inline-block; width: 7px; height: 7px; border-radius: 2px; background: var(--grad); margin-right: 9px; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec-table th, .spec-table td { border: 1px solid var(--border); padding: 11px 16px; text-align: left; }
.spec-table th { background: var(--bg-soft); color: var(--primary-dark); font-weight: 600; width: 220px; }
.order-table-wrap { overflow-x: auto; }
.order-table { min-width: 760px; }
.order-table thead th { width: auto; white-space: nowrap; }
.order-table thead th:first-child { width: 16%; }
.order-table thead th:nth-child(2) { width: 24%; }
.order-table thead th:nth-child(3) { width: 27%; }
.order-table tbody td:first-child { color: var(--primary-dark); font-weight: 600; white-space: nowrap; }
.spec-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.spec-imgs img { border: 1px solid var(--border); border-radius: 8px; width: 100%; }
.spec-note { color: var(--muted); font-size: 13.5px; margin-top: 10px; }

.pd-nav-row { display: flex; justify-content: space-between; gap: 16px; margin-top: 46px; padding-top: 22px; border-top: 1px solid var(--border); font-size: 14.5px; }
.pd-nav-row a { color: #475569; }
.pd-nav-row a:hover { color: var(--primary); }
.rel-title { font-size: 22px; color: var(--primary-dark); margin: 54px 0 24px; }
.rel-title::after { content: ""; display: block; width: 40px; height: 3px; background: var(--grad); border-radius: 2px; margin-top: 10px; }

/* ---------- 技术文章列表 ---------- */
.news-list { display: flex; flex-direction: column; gap: 22px; }
.news-row {
  display: grid; grid-template-columns: 300px 1fr; gap: 26px; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  transition: box-shadow .3s, transform .3s;
}
.news-row:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.news-row .cover { overflow: hidden; }
.news-row .cover img { width: 100%; height: 210px; object-fit: cover; transition: transform .4s; }
.news-row:hover .cover img { transform: scale(1.05); }
.news-row .body { padding: 22px 26px 18px; display: flex; flex-direction: column; }
.news-row .date { font-size: 13px; color: var(--accent); }
.news-row .title { font-size: 19px; font-weight: 600; color: #26364d; margin: 8px 0; line-height: 1.5; }
.news-row:hover .title { color: var(--primary); }
.news-row .sub { color: var(--muted); font-size: 14px; flex: 1; }
.news-row .readmore { font-size: 13.5px; color: var(--primary); margin-top: 10px; }

/* ---------- 文章详情 ---------- */
.article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; align-items: start; }
.article { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 40px 46px; }
.article .meta { color: var(--muted); font-size: 13.5px; margin-bottom: 18px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.article h1 { font-size: 27px; color: var(--primary-dark); line-height: 1.45; margin-bottom: 8px; }
.article .lead { color: var(--muted); font-size: 15px; margin-bottom: 24px; }
.article .hero-img { display: block; width: 100%; height: auto; max-height: 400px; object-fit: contain; border-radius: 8px; margin: 6px 0 24px; }
.article h3 { color: var(--primary-dark); font-size: 18.5px; margin: 26px 0 10px; }
.article h3 span { display: inline-block; width: 8px; height: 8px; border-radius: 2px; background: var(--grad); margin-right: 10px; }
.article p { color: #37455c; text-align: justify; margin-bottom: 12px; }
.article ul { padding-left: 4px; margin-bottom: 12px; }
.article ul li { position: relative; padding-left: 22px; margin-bottom: 7px; color: #37455c; }
.article ul li::before { content: ""; position: absolute; left: 4px; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.article blockquote {
  background: var(--bg-soft); border-left: 3px solid var(--accent); border-radius: 0 8px 8px 0;
  padding: 14px 18px; color: #475569; font-size: 14.5px; margin: 16px 0;
}
.article-foot { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 14px; font-size: 14px; }
.article-foot a { color: #475569; }
.article-foot a:hover { color: var(--primary); }

.side-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin-bottom: 20px; }
.side-card h4 { color: var(--primary-dark); font-size: 16px; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.side-card ul li { margin-bottom: 11px; }
.side-card ul a { display: block; font-size: 14px; color: #475569; line-height: 1.55; }
.side-card ul a:hover { color: var(--primary); }
.side-card .date { font-size: 12px; color: var(--accent); }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 44px; }
.contact-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 22px; text-align: center; transition: transform .3s, box-shadow .3s; }
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.contact-card .icon { width: 52px; height: 52px; margin: 0 auto 14px; border-radius: 12px; background: var(--bg-soft); display: flex; align-items: center; justify-content: center; }
.contact-card .icon svg { width: 26px; height: 26px; stroke: var(--primary); }
.contact-card h4 { color: var(--primary-dark); font-size: 16px; margin-bottom: 6px; }
.contact-card p { color: #475569; font-size: 14px; }
/* ---------- 联系我们 · 百度瓦片地图 ---------- */
.map-wrap { margin-top: 44px; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }
.map-wrap iframe { display: block; width: 100%; height: 460px; border: 0; }
.company-tile-map { position: relative; background: #eef3f7; }
.company-tile-map iframe { pointer-events: none; }
.map-open-overlay { position: absolute; inset: 0; display: block; }
.map-view-button { position: absolute; right: 26px; bottom: 26px; display: inline-flex; align-items: center; gap: 10px; padding: 15px 20px; border-radius: 4px; background: #fff; color: var(--primary); border: 1px solid #e0e6ec; box-shadow: 0 6px 20px #152b4726; font-size: 14px; font-weight: 600; }
.map-view-button svg { width: 22px; height: 22px; }
.map-open-overlay:hover .map-view-button { color: #fff; background: var(--primary); }
.map-open-overlay:focus-visible { outline: 3px solid var(--primary); outline-offset: -3px; }
@media (max-width: 640px) { .company-tile-map iframe { height: 340px; } .map-view-button { right: 16px; bottom: 16px; padding: 12px 16px; } }
.company-location { display: flex; min-height: 300px; padding: 40px 24px; flex-direction: column; align-items: center; justify-content: center; gap: 14px; text-align: center; background: #f1f7fd; color: var(--primary-dark); }
.company-location:hover { background: #e8f2fc; border-color: var(--primary); }
.company-location .location-pin { width: 46px; height: 46px; }
.company-location strong { font-size: 22px; }
.company-location > span { color: var(--muted); }
.company-location .location-action { color: var(--primary); margin-top: 8px; }
.map-link { margin-top: 12px; font-size: 14px; color: var(--muted); }
.map-link a { color: var(--primary); }
.map-link a:hover { text-decoration: underline; }
.contact-info h3 { color: var(--primary-dark); font-size: 20px; margin-bottom: 14px; }
.contact-info p { color: #475569; margin-bottom: 10px; }
.city-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.city-chips span { background: var(--bg-soft); border: 1px solid var(--border); color: #475569; border-radius: 20px; padding: 4px 14px; font-size: 13px; }

/* ---------- 通用内页留白 ---------- */
.page-body { padding: 44px 0 72px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  #products .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
  .about-wrap { grid-template-columns: 1fr; }
  .about-carousel, .about-carousel .c-slide { height: 380px; min-height: 0; }
  .pd-top { grid-template-columns: 400px 1fr; gap: 30px; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .hero { height: 440px; }
  .hero .c-slide { height: 440px; background-size: cover; }
  .hero .c-slide-with-copy { background-position: 30% center; }
  .hero-copy { width: calc(100% - 80px); }
  .hero-copy h2 { max-width: 400px; }
  .hero-copy p { max-width: 340px; }
  .hero-caption h2 { font-size: 30px; }
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff;
    flex-direction: column; padding: 12px 20px 18px; gap: 2px; border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .about-intro, .article-layout { grid-template-columns: 1fr; }
  .products-layout { grid-template-columns: 1fr; }
  .cat-side { position: static; }
  .pd-top { grid-template-columns: 1fr; }
  .news-row { grid-template-columns: 1fr; }
  .news-row .cover img { height: 200px; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .stat-band .grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .honor-carousel .c-slide { flex: 0 0 50%; }
}
@media (max-width: 700px) {
  .logo { gap: 8px; }
  .logo .logo-img { width: 48px; height: 48px; }
  .logo-company { padding-right: 8px; }
  .logo-company .cn { font-size: 15px; }
  .logo-company .en { display: none; }
  .brand-wordmark { width: 120px; height: auto; }
}
@media (max-width: 600px) {
  .section { padding: 52px 0; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  #products .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
  .news-grid { grid-template-columns: 1fr; }
  .n-item { grid-template-columns: 1fr; }
  .n-item .cover { min-height: 190px; }
  .hero { height: 340px; }
  .hero .c-slide { height: 340px; }
  .hero .c-slide-with-copy { background-position: 20% center; }
  .hero-copy { width: calc(100% - 76px); }
  .hero-copy h2 { max-width: 220px; font-size: 26px; }
  .hero-copy p { max-width: 215px; margin-top: 10px; font-size: 14px; }
  .hero-copy span { max-width: 215px; margin-top: 15px; padding-top: 9px; font-size: 11px; }
  .hero-caption h2 { font-size: 24px; }
  .topbar .tb-left { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; }
  .env-carousel .c-slide { height: 220px; }
  .env-carousel .c-arrow { opacity: 1; width: 38px; height: 38px; }
  .article { padding: 26px 20px; }
  .honor-carousel .c-slide { flex: 0 0 100%; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .spec-imgs { grid-template-columns: 1fr; }
}

/* ---------- 悬浮快捷工具条（与科技蓝主题统一） ---------- */
.floating-bar {
  position: fixed; right: 16px; bottom: 96px; z-index: 999;
  width: 52px; border-radius: 12px; overflow: hidden;
  display: flex; flex-direction: column;
  background: linear-gradient(180deg, #0a3a78 0%, #145eb4 100%);
  box-shadow: var(--shadow-md);
}
.floating-bar a {
  display: flex; align-items: center; justify-content: center;
  height: 52px; color: #fff; transition: background .2s;
}
.floating-bar a:hover { background: rgba(61, 155, 240, .32); }
.floating-bar a + a { border-top: 1px solid rgba(255, 255, 255, .18); }
.floating-bar svg { width: 22px; height: 22px; fill: currentColor; }
@media (max-width: 768px) {
  .floating-bar {
    right: 14px;
    bottom: calc(72px + env(safe-area-inset-bottom, 0px));
    width: 48px;
  }
  .floating-bar a { height: 48px; }
  .floating-bar svg { width: 20px; height: 20px; }
}
@media (max-width: 480px) {
  .navbar .container { height: 64px; padding-inline: 16px; }
  .logo { gap: 6px; }
  .logo .logo-img { display: block; width: 36px; height: 36px; }
  .logo-company { padding-right: 6px; }
  .logo-company .cn { font-size: 13px; letter-spacing: 0; }
  .brand-wordmark { width: 100px; height: auto; }
  .floating-bar {
    right: 10px;
    bottom: calc(64px + env(safe-area-inset-bottom, 0px));
    width: 44px; border-radius: 11px;
  }
  .floating-bar a { height: 44px; }
  .floating-bar svg { width: 18px; height: 18px; }
}
@media (max-width: 360px) {
  .logo .logo-img { width: 30px; height: 30px; }
  .logo-company .cn { font-size: 11.5px; }
  .brand-wordmark { width: 80px; }
}

/* About page section navigation */
.about-subnav { position: sticky; top: var(--about-navbar-height, 73px); z-index: 90; background: #fff; border-bottom: 1px solid #e2ecf6; }
.about-subnav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 50px; }
.about-breadcrumb { display: flex; align-items: center; gap: 9px; font-size: 14px; color: #7b8794; }
.about-breadcrumb [aria-current] { color: var(--accent); font-weight: 600; }
.about-section-links { display: flex; align-items: center; gap: 8px; }
.about-section-links a { display: inline-flex; align-items: center; justify-content: center; min-height: 34px; padding-inline: 18px; border-radius: 18px; font-size: 14px; color: #556274; transition: background .2s, color .2s; }
.about-section-links a:hover, .about-section-links a:focus-visible { color: var(--accent); background: #edf6ff; }
.about-section-links a.active { color: #fff; font-weight: 600; background: #207bd4; }
#about-intro, #about-env, #about-honor { scroll-margin-top: calc(var(--about-navbar-height, 73px) + var(--about-subnav-height, 67px) + 20px); }
@media (max-width: 640px) {
  .about-subnav-inner { flex-direction: column; align-items: stretch; gap: 8px; padding-top: 10px; padding-bottom: 10px; }
  .about-section-links { justify-content: space-between; gap: 6px; }
  .about-section-links a { min-height: 32px; padding-inline: 14px; }
}