/* ==========================================================================
   耐博士 · 前台样式表
   浅色主题 / 主色 #0f766e / 自适应 PC + 移动
   ========================================================================== */

:root {
  color-scheme: light only; /* 声明仅浅色：禁止手机浏览器强制变色把文字"反色隐身" */
  --brand: #0f766e;
  --brand-d: #0b5a54;
  --brand-l: #14b8a6;
  --brand-soft: #ecfdf9;
  --accent: #f59e0b;
  --ink: #0f172a;
  --ink-2: #334155;
  --muted: #6b7c8f;
  --line: #e5eaef;
  --bg-soft: #f4f7f7;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow: 0 6px 24px rgba(15, 23, 42, .06);
  --shadow-hover: 0 14px 40px rgba(15, 23, 42, .12);
  --wrap: 1240px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
/* 电脑浏览器（精确指针）始终使用 PC 版式：窗口拉窄时横向滚动，不切成手机版 */
@media (pointer: fine) { html { min-width: 1024px; } }

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, Segoe UI, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-2);
  background: #fff;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: color .2s, opacity .2s; }
a:hover { color: var(--brand); }
img { max-width: 100%; display: block; border: 0; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { color: var(--ink); font-weight: 700; line-height: 1.35; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
input, textarea, select { font-family: inherit; font-size: 14px; }
em, i { font-style: normal; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

/* ------------------------------------------------------------ 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 42px; padding: 0 24px; border-radius: 999px;
  font-size: 14px; font-weight: 600; letter-spacing: .5px;
  transition: all .25s; white-space: nowrap;
}
.btn i { transition: transform .25s; }
.btn:hover i { transform: translateX(3px); }
.btn-primary { background: var(--brand); color: #fff !important; box-shadow: 0 6px 18px rgba(15, 118, 110, .28); }
.btn-primary:hover { background: var(--brand-d); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(15, 118, 110, .34); }
.btn-outline { border: 1px solid var(--line); color: var(--ink) !important; background: #fff; }
.btn-outline:hover { border-color: var(--brand); color: var(--brand) !important; background: var(--brand-soft); }
.btn-lg { height: 50px; padding: 0 32px; font-size: 15px; }
.btn-block { display: flex; width: 100%; }

/* ------------------------------------------------------------ 顶栏 */
.topbar { background: #0d1f24; color: #b9c8cc; font-size: 13px; }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 40px; }
.tb-left { display: flex; gap: 22px; }
.tb-item { display: inline-flex; align-items: center; gap: 6px; }
.tb-right { display: flex; align-items: center; gap: 18px; }
.tb-slogan { color: #8fa5aa; }
.tb-link { color: #7fd8c8; }
.tb-link:hover { color: #fff; }
.ico { display: inline-block; width: 14px; height: 14px; background: currentColor; opacity: .65;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat; -webkit-mask-position: center; mask-position: center; -webkit-mask-size: contain; mask-size: contain; }
.ico-tel { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M6.6 10.8a15 15 0 006.6 6.6l2.2-2.2c.3-.3.7-.4 1-.2 1.1.4 2.3.6 3.6.6.6 0 1 .4 1 1V20c0 .6-.4 1-1 1A17 17 0 013 4c0-.6.4-1 1-1h3.5c.6 0 1 .4 1 1 0 1.2.2 2.4.6 3.6.1.3 0 .7-.2 1l-2.3 2.2z'/%3E%3C/svg%3E"); mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M6.6 10.8a15 15 0 006.6 6.6l2.2-2.2c.3-.3.7-.4 1-.2 1.1.4 2.3.6 3.6.6.6 0 1 .4 1 1V20c0 .6-.4 1-1 1A17 17 0 013 4c0-.6.4-1 1-1h3.5c.6 0 1 .4 1 1 0 1.2.2 2.4.6 3.6.1.3 0 .7-.2 1l-2.3 2.2z'/%3E%3C/svg%3E"); }
.ico-mail { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M2 5h20v14H2V5zm2 2v.5l8 5 8-5V7H4zm0 2.8V17h16V9.8l-8 5-8-5z'/%3E%3C/svg%3E"); mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M2 5h20v14H2V5zm2 2v.5l8 5 8-5V7H4zm0 2.8V17h16V9.8l-8 5-8-5z'/%3E%3C/svg%3E"); }
.ico-search { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M10 2a8 8 0 105.3 14l4.4 4.4 1.4-1.4-4.4-4.4A8 8 0 0010 2zm0 2a6 6 0 110 12 6 6 0 010-12z'/%3E%3C/svg%3E"); mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M10 2a8 8 0 105.3 14l4.4 4.4 1.4-1.4-4.4-4.4A8 8 0 0010 2zm0 2a6 6 0 110 12 6 6 0 010-12z'/%3E%3C/svg%3E"); }

/* ------------------------------------------------------------ 头部 */
.header { position: sticky; top: 0; z-index: 60; background: #fff; box-shadow: 0 2px 14px rgba(15, 23, 42, .06); }
.head-inner { display: flex; align-items: center; gap: 28px; height: 84px; }
.logo { flex: 0 0 auto; }
/* Logo 固定展示尺寸 104 × 52 px（等比完整显示，不裁切不拉伸） */
.logo img { width: 104px; height: 52px; object-fit: contain; object-position: left center; }
.nav { flex: 1 1 auto; }
.nav > ul { display: flex; align-items: center; gap: 4px; }
.nav-item { position: relative; }
.nav-item > a {
  display: flex; align-items: center; gap: 5px; height: 84px; padding: 0 16px;
  font-size: 15px; font-weight: 600; color: var(--ink); position: relative; white-space: nowrap;
}
.nav-item > a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 22px; height: 2px;
  background: var(--brand); transform: scaleX(0); transition: transform .25s; border-radius: 2px;
}
.nav-item:hover > a, .nav-item.is-active > a { color: var(--brand); }
.nav-item:hover > a::after, .nav-item.is-active > a::after { transform: scaleX(1); }
.caret { width: 0; height: 0; border: 4px solid transparent; border-top-color: currentColor; margin-top: 3px; opacity: .5; }
.sub-nav {
  position: absolute; top: 84px; left: 50%; transform: translateX(-50%) translateY(10px);
  min-width: 176px; background: #fff; border-radius: 12px; padding: 8px;
  box-shadow: var(--shadow-hover); opacity: 0; visibility: hidden; transition: all .25s; border: 1px solid var(--line);
}
.nav-item.has-sub:hover .sub-nav { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.sub-nav li a { display: block; padding: 9px 16px; border-radius: 8px; font-size: 14px; color: #334155; color: var(--ink-2); white-space: nowrap; -webkit-tap-highlight-color: transparent; }
.sub-nav li a:hover { background: var(--brand-soft); color: var(--brand); }

.head-right { display: flex; align-items: center; gap: 16px; }
.head-search { display: flex; align-items: center; background: var(--bg-soft); border-radius: 999px; padding: 0 6px 0 16px; height: 40px; }
.head-search input { width: 128px; border: 0; background: none; outline: none; color: var(--ink); }
.head-search input::placeholder { color: #9aa8b5; }
.head-search button { width: 32px; height: 32px; border-radius: 50%; background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: center; }
.head-search button .ico { width: 15px; height: 15px; opacity: 1; background: #fff; }
.head-search button:hover { background: var(--brand-d); }
.head-hot { line-height: 1.25; }
.hh-label { display: block; font-size: 12px; color: var(--muted); }
.head-hot strong { font-size: 17px; color: var(--brand); font-weight: 800; letter-spacing: .3px; }
.menu-btn { display: none; width: 42px; height: 42px; flex-direction: column; justify-content: center; gap: 5px; padding: 0 10px; }
.menu-btn span { display: block; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }
.menu-btn.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn.is-open span:nth-child(2) { opacity: 0; }
.menu-btn.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ------------------------------------------------------------ 首页轮播 */
.hero { position: relative; height: 560px; overflow: hidden; background: #0d1f24; }
.slide { position: absolute; inset: 0; opacity: 0; transition: opacity .7s; pointer-events: none; }
.slide.is-active { opacity: 1; pointer-events: auto; }
.slide-bg { position: absolute; inset: 0; background-size: cover; background-position: center; transform: scale(1.04); transition: transform 2s linear; }
.slide-bg img { display: block; width: 100%; height: 100%; object-fit: cover; }
/* 轮播整图可点击 */
.slide-link { display: block; width: 100%; height: 100%; cursor: pointer; position: relative; z-index: 2; -webkit-tap-highlight-color: transparent; }
.slide-link:focus-visible { outline: 2px solid var(--brand); outline-offset: -2px; }
.slide.is-active .slide-bg { transform: scale(1); }
.slide-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8, 22, 26, .82) 0%, rgba(8, 22, 26, .45) 55%, rgba(8, 22, 26, .2) 100%); pointer-events: none; }
.slide-inner { position: relative; z-index: 2; height: 100%; display: flex; flex-direction: column; justify-content: center; padding-bottom: 84px; }
.slide-title { font-size: 52px; color: #fff; letter-spacing: 2px; margin-bottom: 14px; text-shadow: 0 4px 24px rgba(0, 0, 0, .3); }
.slide-sub { font-size: 19px; color: rgba(255, 255, 255, .82); margin-bottom: 30px; letter-spacing: 1px; }
.slide-dots { position: absolute; left: 50%; bottom: 118px; transform: translateX(-50%); display: flex; gap: 10px; z-index: 5; }
.slide-dot { width: 30px; height: 3px; border-radius: 3px; background: rgba(255, 255, 255, .35); transition: .3s; }
.slide-dot.is-active { background: #fff; width: 46px; }
.hero-facts { position: absolute; left: 0; right: 0; bottom: 0; background: rgba(9, 26, 30, .72); backdrop-filter: blur(6px); z-index: 5; }
.hero-facts-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.hf-item { padding: 18px 0; text-align: center; border-right: 1px solid rgba(255, 255, 255, .12); }
.hf-item:last-child { border-right: 0; }
.hf-item strong { display: block; font-size: 28px; color: #fff; font-weight: 800; line-height: 1.2; }
.hf-item span { font-size: 13px; color: rgba(255, 255, 255, .7); }
.hero.is-empty .hero-facts { position: static; }

/* ------------------------------------------------------------ 通用区块 */
.sec { padding: 74px 0; }
.sec-cats, .sec-news { background: var(--bg-soft); }
.sec-head { text-align: center; margin-bottom: 40px; }
.sec-head.row { display: flex; align-items: flex-end; justify-content: space-between; text-align: left; }
.sec-title { font-size: 30px; letter-spacing: 1px; display: inline-flex; flex-direction: column; align-items: center; }
.sec-title span { display: block; font-size: 12px; font-weight: 400; letter-spacing: 4px; color: var(--brand); opacity: .8; margin-top: 4px; font-family: Arial, sans-serif; }
.sec-title.left { align-items: flex-start; }
.sec-desc { color: var(--muted); margin-top: 14px; max-width: 720px; margin-left: auto; margin-right: auto; }
.sec-more { font-size: 14px; color: var(--muted); font-weight: 600; }
.sec-more i { transition: transform .25s; display: inline-block; }
.sec-more:hover { color: var(--brand); }
.sec-more:hover i { transform: translateX(4px); }

/* ------------------------------------------------------------ 产品分类卡 */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cat-card { position: relative; border-radius: var(--radius-lg); overflow: hidden; background: #fff; box-shadow: var(--shadow); transition: .3s; }
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.cat-card-img { height: 180px; overflow: hidden; }
.cat-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.cat-card:hover .cat-card-img img { transform: scale(1.06); }
.cat-card-text { padding: 18px 20px 20px; }
.cat-card-text h3 { font-size: 17px; margin-bottom: 6px; }
.cat-card-text p { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ------------------------------------------------------------ 产品卡 */
.p-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.p-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; transition: .3s; display: flex; flex-direction: column; }
.p-card:hover { border-color: transparent; box-shadow: var(--shadow-hover); transform: translateY(-6px); }
.p-card-img { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-soft); }
.p-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.p-card:hover .p-card-img img { transform: scale(1.05); }
.badge-top { position: absolute; top: 12px; left: 12px; background: var(--accent); color: #fff; font-size: 12px; padding: 2px 10px; border-radius: 999px; font-weight: 600; }
.p-card-body { padding: 18px; display: flex; flex-direction: column; flex: 1 1 auto; }
.p-card-body h3 { font-size: 16px; margin-bottom: 6px; }
.p-card-sub { font-size: 13px; color: var(--brand); font-weight: 600; margin-bottom: 8px; }
.p-card-desc { font-size: 13px; color: var(--muted); line-height: 1.65; flex: 1 1 auto; }
.p-card-more { margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--brand); display: inline-flex; align-items: center; gap: 5px; }
.p-card-more i { transition: transform .25s; }
.p-card:hover .p-card-more i { transform: translateX(4px); }

/* ------------------------------------------------------------ 优势 */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.why-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px 26px; transition: .3s; position: relative; overflow: hidden; }
.why-card::before { content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0; background: var(--brand); transition: width .35s; }
.why-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-5px); }
.why-card:hover::before { width: 100%; }
.why-ico { width: 52px; height: 52px; border-radius: 14px; background: var(--brand-soft); margin: 0 auto 18px; position: relative; }
.why-ico::after { content: ""; position: absolute; inset: 14px; background: var(--brand); -webkit-mask-size: contain; mask-size: contain; -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat; -webkit-mask-position: center; mask-position: center; }
.why-shield::after { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M12 2l8 3v6c0 5-3.4 9.3-8 11-4.6-1.7-8-6-8-11V5l8-3zm0 2.2L6 6.4V11c0 3.9 2.5 7.4 6 8.9 3.5-1.5 6-5 6-8.9V6.4l-6-2.2z'/%3E%3C/svg%3E"); mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M12 2l8 3v6c0 5-3.4 9.3-8 11-4.6-1.7-8-6-8-11V5l8-3zm0 2.2L6 6.4V11c0 3.9 2.5 7.4 6 8.9 3.5-1.5 6-5 6-8.9V6.4l-6-2.2z'/%3E%3C/svg%3E"); }
.why-plug::after { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M8 2v5h2V2h2v5h2V2h2v5a4 4 0 01-3 3.9V22h-4V10.9A4 4 0 018 7V2z'/%3E%3C/svg%3E"); mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M8 2v5h2V2h2v5h2V2h2v5a4 4 0 01-3 3.9V22h-4V10.9A4 4 0 018 7V2z'/%3E%3C/svg%3E"); }
.why-cycle::after { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M12 4a8 8 0 017.5 5.2l1.9-.7A10 10 0 002 12h2a8 8 0 018-8zm0 16a8 8 0 01-7.5-5.2l-1.9.7A10 10 0 0022 12h-2a8 8 0 01-8 8zm-1-18v4l3-2-3-2zm2 24v-4l-3 2 3 2z'/%3E%3C/svg%3E"); mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M12 4a8 8 0 017.5 5.2l1.9-.7A10 10 0 002 12h2a8 8 0 018-8zm0 16a8 8 0 01-7.5-5.2l-1.9.7A10 10 0 0022 12h-2a8 8 0 01-8 8zm-1-18v4l3-2-3-2zm2 24v-4l-3 2 3 2z'/%3E%3C/svg%3E"); }
.why-service::after { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M12 2a7 7 0 00-7 7v2H4v9h5v-9H6V9a6 6 0 1112 0v2h-3v9h5v-9h-1V9a7 7 0 00-7-7z'/%3E%3C/svg%3E"); mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M12 2a7 7 0 00-7 7v2H4v9h5v-9H6V9a6 6 0 1112 0v2h-3v9h5v-9h-1V9a7 7 0 00-7-7z'/%3E%3C/svg%3E"); }
.why-card h3 { font-size: 18px; margin-bottom: 8px; text-align: center; }
.why-card p { font-size: 13.5px; color: var(--muted); line-height: 1.7; }
/* 配图固定展示尺寸 104 × 52 px，水平居中 */
.why-card-img { width: 104px; height: 52px; border-radius: 10px; margin: 0 auto 18px; overflow: hidden; background: var(--bg-soft); }
.why-card-img img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ------------------------------------------------------------ 案例 */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card { background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); transition: .3s; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.case-card-img { position: relative; aspect-ratio: 4 / 3; overflow: hidden; }
.case-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .case-card-img img { transform: scale(1.06); }
.case-tag { position: absolute; left: 12px; bottom: 12px; background: rgba(15, 118, 110, .92); color: #fff; font-size: 12px; padding: 3px 12px; border-radius: 999px; }
.case-card-body { padding: 20px; }
.case-card-body h3 { font-size: 16.5px; margin-bottom: 8px; }
.case-card-body p { font-size: 13px; color: var(--muted); line-height: 1.7; }

/* ------------------------------------------------------------ 关于 */
.about-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-media img { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-hover); }
.about-text .sec-title { margin-bottom: 18px; }
.about-lead { font-size: 16px; color: var(--ink); font-weight: 600; margin-bottom: 12px; }
.about-desc { color: var(--muted); font-size: 14px; line-height: 1.85; margin-bottom: 26px; }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 30px; padding: 20px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.as-item strong { display: block; font-size: 26px; color: var(--brand); font-weight: 800; line-height: 1.2; }
.as-item span { font-size: 12.5px; color: var(--muted); }

/* ------------------------------------------------------------ 新闻 */
.n-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.n-item { display: flex; align-items: center; gap: 18px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; transition: .25s; min-width: 0; }
.n-item:hover { border-color: var(--brand); box-shadow: var(--shadow); transform: translateX(4px); }
.n-date { flex: 0 0 66px; text-align: center; border-right: 1px solid var(--line); padding-right: 14px; }
.n-date strong { display: block; font-size: 26px; color: var(--brand); font-weight: 800; line-height: 1.1; }
.n-date span { font-size: 11.5px; color: var(--muted); letter-spacing: .5px; }
.n-body { flex: 1 1 auto; min-width: 0; }
.n-body h3 { font-size: 15.5px; margin-bottom: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.n-body p { font-size: 13px; color: var(--muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.n-meta { font-size: 12px; color: #94a3b8; margin-top: 6px; }
.n-arrow { color: var(--brand); font-size: 18px; opacity: 0; transform: translateX(-6px); transition: .25s; }
.n-item:hover .n-arrow { opacity: 1; transform: translateX(0); }

/* ------------------------------------------------------------ CTA */
.cta { background: linear-gradient(120deg, #0f766e, #0b5a54); padding: 46px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-text h3 { color: #fff; font-size: 24px; margin-bottom: 6px; }
.cta-text p { color: rgba(255, 255, 255, .82); font-size: 14px; max-width: 700px; }
.cta-act { display: flex; align-items: center; gap: 20px; }
.cta-act .btn-primary { background: #fff; color: var(--brand) !important; box-shadow: none; }
.cta-act .btn-primary:hover { background: #f2fbf9; }
.cta-tel { color: #fff; font-size: 22px; font-weight: 800; letter-spacing: .5px; }

/* ------------------------------------------------------------ 内页头图 */
.page-hero { position: relative; padding: 74px 0 66px; background: #0d1f24 center/cover no-repeat; overflow: hidden; }
.page-hero-plain { background: linear-gradient(120deg, #0f2024, #123a3a); }
.page-hero-mask { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8, 22, 26, .84), rgba(8, 22, 26, .55)); }
.page-hero-inner { position: relative; z-index: 2; }
.page-hero-inner h1 { color: #fff; font-size: 34px; letter-spacing: 1px; display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.page-hero-inner h1 span { font-size: 13px; letter-spacing: 3px; color: rgba(255, 255, 255, .6); font-family: Arial, sans-serif; font-weight: 400; }
.page-hero-inner p { color: rgba(255, 255, 255, .78); margin-top: 10px; max-width: 760px; font-size: 14px; }

/* ------------------------------------------------------------ 面包屑 */
.crumb { background: var(--bg-soft); border-bottom: 1px solid var(--line); font-size: 13px; }
.crumb .wrap { display: flex; align-items: center; padding-top: 14px; padding-bottom: 14px; color: var(--muted); flex-wrap: wrap; }
.crumb a:hover { color: var(--brand); }
.crumb i { margin: 0 10px; opacity: .45; }
.crumb .cur { color: var(--ink); font-weight: 600; }

/* ------------------------------------------------------------ 列表页布局 */
.list-layout, .page-layout { display: grid; grid-template-columns: 250px 1fr; gap: 34px; padding-top: 40px; padding-bottom: 70px; align-items: start; }
.side { position: sticky; top: 106px; display: flex; flex-direction: column; gap: 20px; }
.side-box { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.side-title { font-size: 16px; padding: 16px 20px; background: var(--brand); color: #fff; font-weight: 700; }
.side-cats li a { display: block; padding: 13px 20px; font-size: 14px; border-bottom: 1px solid var(--line); color: var(--ink-2); transition: .2s; }
.side-cats li:last-child a { border-bottom: 0; }
.side-cats li a:hover { background: var(--brand-soft); color: var(--brand); padding-left: 26px; }
.side-cats li.is-active a { background: var(--brand-soft); color: var(--brand); font-weight: 700; border-left: 3px solid var(--brand); }
.side-contact { padding-bottom: 20px; text-align: center; }
.sc-tel { font-size: 21px; font-weight: 800; color: var(--brand); margin: 16px 0 4px; }
.sc-tip { font-size: 12.5px; color: var(--muted); margin-bottom: 16px; padding: 0 20px; }
.side-contact .btn { margin: 0 20px; width: calc(100% - 40px); }

.list-main { min-width: 0; }
.list-toolbar { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--line); margin-bottom: 26px; font-size: 13px; color: var(--muted); }
.lt-count strong { color: var(--brand); font-size: 16px; }
.list-main .p-grid { grid-template-columns: repeat(3, 1fr); }
.list-main .case-grid { grid-template-columns: repeat(2, 1fr); }
.list-main .n-list { grid-template-columns: 1fr; }

/* ------------------------------------------------------------ 分页 */
.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 42px; flex-wrap: wrap; }
.pg-item { min-width: 40px; height: 40px; padding: 0 14px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; color: var(--ink-2); transition: .2s; }
.pg-item:hover { border-color: var(--brand); color: var(--brand); }
.pg-item.is-current { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 700; }
.pg-item.is-disabled { opacity: .45; pointer-events: none; }
.pg-dot { padding: 0 4px; color: var(--muted); }

/* ------------------------------------------------------------ 产品详情 */
.pd-top { display: grid; grid-template-columns: 1fr 1fr; gap: 46px; padding: 40px 0 20px; }
.pd-gallery { min-width: 0; }
.pd-main { border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: var(--bg-soft); aspect-ratio: 4 / 3; }
.pd-main img { width: 100%; height: 100%; object-fit: cover; }
.pd-thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.pd-thumb { width: 82px; height: 82px; border: 2px solid var(--line); border-radius: 10px; overflow: hidden; padding: 0; background: #fff; transition: .2s; }
.pd-thumb img { width: 100%; height: 100%; object-fit: cover; }
.pd-thumb.is-active, .pd-thumb:hover { border-color: var(--brand); }
.pd-info { min-width: 0; }
.pd-title { font-size: 30px; line-height: 1.3; margin-bottom: 8px; }
.pd-sub { font-size: 15px; color: var(--brand); font-weight: 700; margin-bottom: 16px; }
.pd-summary { font-size: 14.5px; color: var(--ink-2); line-height: 1.85; padding: 16px 18px; background: var(--brand-soft); border-radius: var(--radius); border-left: 3px solid var(--brand); margin-bottom: 22px; }
.pd-keys { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 20px; }
.pd-keys li { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.pd-keys span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 2px; }
.pd-keys strong { font-size: 14.5px; color: var(--ink); font-weight: 700; }
.pd-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.tag { font-size: 12.5px; color: var(--brand); background: var(--brand-soft); padding: 3px 12px; border-radius: 999px; }
.pd-acts { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.pd-meta { font-size: 12.5px; color: #94a3b8; }

/* ------------------------------------------------------------ Tab */
.tabs { margin: 46px 0 0; }
.tab-head { display: flex; gap: 2px; border-bottom: 2px solid var(--line); flex-wrap: wrap; }
.tab-btn { padding: 14px 28px; font-size: 15px; font-weight: 600; color: var(--muted); position: relative; transition: .2s; }
.tab-btn::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--brand); transform: scaleX(0); transition: transform .25s; }
.tab-btn.is-active { color: var(--brand); }
.tab-btn.is-active::after { transform: scaleX(1); }
.tab-panel { display: none; padding: 30px 0; }
.tab-panel.is-active { display: block; animation: fadeUp .4s; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.spec-table { width: 100%; border-collapse: collapse; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.spec-table tr:nth-child(odd) { background: var(--bg-soft); }
.spec-table th, .spec-table td { padding: 14px 20px; font-size: 14px; text-align: left; border-bottom: 1px solid var(--line); }
.spec-table th { width: 220px; color: var(--ink); font-weight: 600; background: #f8fafa; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }

/* ------------------------------------------------------------ 富文本 */
.rich { font-size: 15px; line-height: 1.95; color: var(--ink-2); }
.rich h2, .rich h3 { font-size: 19px; margin: 30px 0 14px; padding-left: 14px; border-left: 4px solid var(--brand); line-height: 1.4; }
.rich h2:first-child, .rich h3:first-child { margin-top: 0; }
.rich p { margin-bottom: 16px; }
.rich .lead { font-size: 16px; color: var(--ink); background: var(--brand-soft); padding: 16px 20px; border-radius: var(--radius); border-left: 3px solid var(--brand); }
.rich ul, .rich ol { margin: 0 0 18px 4px; }
.rich ul li, .rich ol li { position: relative; padding-left: 22px; margin-bottom: 10px; }
.rich ul li::before { content: ""; position: absolute; left: 2px; top: 12px; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }
.rich ol { counter-reset: n; }
.rich ol li::before { counter-increment: n; content: counter(n); position: absolute; left: 0; top: 0; color: var(--brand); font-weight: 700; }
.rich strong { color: var(--ink); }
.rich blockquote { margin: 18px 0; padding: 14px 20px; background: var(--bg-soft); border-left: 3px solid var(--brand-l); border-radius: 8px; color: var(--muted); }
.rich table { width: 100%; border-collapse: collapse; margin: 18px 0; }
.rich table th, .rich table td { border: 1px solid var(--line); padding: 10px 14px; font-size: 14px; }
.rich a { color: var(--brand); text-decoration: underline; }
.rich h4 { font-size: 16px; margin: 22px 0 10px; color: var(--ink); font-weight: 700; }
.rich hr { border: 0; border-top: 1px solid var(--line); margin: 26px 0; }
/* 编辑器产出的对齐方式（浏览器命令会写成 align 属性） */
.rich [align="center"], .rich .ta-c { text-align: center; }
.rich [align="right"], .rich .ta-r { text-align: right; }
.rich [align="left"], .rich .ta-l { text-align: left; }

/* —— 富文本内的媒体：图片 / 视频 / 嵌入内容统一自适应，电脑与手机同一套规则 —— */
.rich img { max-width: 100%; height: auto; display: block; margin: 18px auto; border-radius: var(--radius); }
.rich video { width: 100%; max-width: 100%; max-height: 72vh; object-fit: contain; height: auto; display: block; margin: 18px auto; border-radius: var(--radius); background: #000; }
/* 带链接的图片：整图可点，不显示下划线 */
.rich a.rwd-img-link { display: block; max-width: 100%; text-decoration: none; }
.rich a.rwd-img-link img { margin-left: auto; margin-right: auto; }
/* 外链嵌入（B站 / 腾讯视频 / 优酷 / YouTube 等）：按原宽高比等比缩放，不溢出也不压扁 */
.rich .rwd-video {
  position: relative; width: 100%; height: 0;
  padding-bottom: var(--rwd-ratio, 56.25%);
  margin: 18px 0; border-radius: var(--radius); overflow: hidden; background: #000;
}
.rich .rwd-video > iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }
/* 宽表格：手机端在容器内横向滑动，不撑破页面 */
.rich .rwd-table { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 18px 0; }
.rich .rwd-table table { margin: 0; min-width: 460px; }
/* 后台编辑器写入的字号：用 CSS 映射为固定像素，跨设备一致 */
.rich font[size="1"] { font-size: 12px; }
.rich font[size="2"] { font-size: 13px; }
.rich font[size="3"] { font-size: 15px; }
.rich font[size="4"] { font-size: 17px; }
.rich font[size="5"] { font-size: 19px; }
.rich font[size="6"] { font-size: 22px; }
.rich font[size="7"] { font-size: 26px; }

/* ------------------------------------------------------------ 详情页文章 */
.article { max-width: 940px; margin: 0 auto; padding: 40px 0 10px; }
.art-head { text-align: center; margin-bottom: 30px; padding-bottom: 26px; border-bottom: 1px solid var(--line); }
.art-head h1 { font-size: 30px; line-height: 1.4; margin-bottom: 10px; }
.art-sub { font-size: 15px; color: var(--brand); font-weight: 600; margin-bottom: 12px; }
.art-meta { font-size: 13px; color: var(--muted); display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.art-cover { border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 30px; }
.art-cover img { width: 100%; }
.info-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 32px; }
.info-cell { background: var(--bg-soft); border-radius: var(--radius); padding: 16px 18px; border-left: 3px solid var(--brand); }
.info-cell span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.info-cell strong { font-size: 14.5px; color: var(--ink); }
.art-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 30px 0; }
.art-gallery .pd-thumb { width: 100%; height: auto; aspect-ratio: 4 / 3; }
.dnav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 40px 0 10px; }
.dnav a, .dnav .dn-none { display: block; padding: 16px 20px; border: 1px solid var(--line); border-radius: var(--radius); font-size: 14px; transition: .2s; }
.dnav a:hover { border-color: var(--brand); background: var(--brand-soft); }
.dnav span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.dnav .dn-none { color: #b3c0cb; }
.sec-related { padding-top: 60px; border-top: 1px solid var(--line); margin-top: 30px; }
.sec-related .sec-head { text-align: left; }
.sec-related .sec-head.row { justify-content: flex-start; }
.sec-related .p-grid { grid-template-columns: repeat(4, 1fr); }

/* ------------------------------------------------------------ 单页 */
.page-main { min-width: 0; background: #fff; }

/* ------------------------------------------------------------ 联系页 */
.contact-layout { display: grid; grid-template-columns: 1fr 1.15fr; gap: 50px; padding: 46px 0 76px; align-items: start; }
.ci-list { margin-top: 20px; }
.ci-list li { display: flex; align-items: baseline; gap: 16px; padding: 15px 0; border-bottom: 1px dashed var(--line); }
.ci-label { flex: 0 0 88px; font-size: 13px; color: var(--muted); }
.ci-list strong { font-size: 15px; color: var(--ink); font-weight: 600; }
.ci-big { font-size: 26px !important; color: var(--brand) !important; font-weight: 800 !important; }
.ci-note { margin-top: 26px; background: var(--brand-soft); border-radius: var(--radius); padding: 22px 24px; }
.ci-note h4 { font-size: 15px; margin-bottom: 10px; color: var(--brand); }
.ci-note li { position: relative; padding-left: 18px; font-size: 13.5px; color: var(--ink-2); margin-bottom: 8px; }
.ci-note li::before { content: ""; position: absolute; left: 2px; top: 10px; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }
.contact-form-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow); }
.contact-form-box .sec-title { margin-bottom: 22px; }
.cform-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
/* 反垃圾蜜罐字段：对正常用户不可见，也不参与键盘 Tab 顺序 */
.hp-wrap { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.cfield { display: block; margin-bottom: 16px; }
.cfield > span { display: block; font-size: 13.5px; color: var(--ink); font-weight: 600; margin-bottom: 7px; }
.cfield > span i { color: #e11d48; }
.cfield input, .cfield textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; outline: none;
  transition: .2s; background: #fff; color: var(--ink); resize: vertical;
}
.cfield input:focus, .cfield textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(15, 118, 110, .1); }
.cform-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 6px; }
.cform-tip { font-size: 12.5px; color: var(--muted); }
.cform-result { margin-top: 16px; font-size: 14px; border-radius: 10px; display: none; padding: 12px 16px; }
.cform-result.is-ok { display: block; background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.cform-result.is-err { display: block; background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }

/* ------------------------------------------------------------ 搜索 */
.search-layout { padding: 40px 0 76px; }
.search-big { display: flex; gap: 12px; max-width: 680px; margin: 0 auto 30px; }
.search-big input { flex: 1 1 auto; height: 50px; border: 1px solid var(--line); border-radius: 999px; padding: 0 22px; outline: none; font-size: 15px; }
.search-big input:focus { border-color: var(--brand); box-shadow: 0 0 0 4px rgba(15, 118, 110, .09); }
.search-tabs { display: flex; gap: 10px; justify-content: center; margin-bottom: 30px; flex-wrap: wrap; }
.st-item { padding: 8px 20px; border-radius: 999px; border: 1px solid var(--line); font-size: 14px; color: var(--ink-2); }
.st-item em { font-size: 12px; color: var(--muted); margin-left: 4px; }
.st-item.is-active { background: var(--brand); border-color: var(--brand); color: #fff; }
.st-item.is-active em { color: rgba(255, 255, 255, .8); }
.search-list { display: grid; gap: 16px; }
.sr-item { display: flex; gap: 20px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); transition: .25s; }
.sr-item:hover { border-color: var(--brand); box-shadow: var(--shadow); }
.sr-cover { flex: 0 0 150px; aspect-ratio: 4 / 3; border-radius: 10px; overflow: hidden; background: var(--bg-soft); }
.sr-cover img { width: 100%; height: 100%; object-fit: cover; }
.sr-body { min-width: 0; }
.sr-body h3 { font-size: 16px; margin-bottom: 6px; }
.sr-body p { font-size: 13.5px; color: var(--muted); line-height: 1.7; }
.sr-tag { display: inline-block; margin-top: 8px; font-size: 12px; color: var(--brand); background: var(--brand-soft); padding: 2px 10px; border-radius: 999px; }

/* ------------------------------------------------------------ 空状态 */
.empty { text-align: center; padding: 70px 20px; color: var(--muted); }
.empty-ico { font-size: 46px; color: var(--line); margin-bottom: 12px; }
.empty p { margin-bottom: 20px; }

/* ------------------------------------------------------------ 页脚 */
.footer { background: #0d1f24; color: #93a6ab; font-size: 13.5px; margin-top: 0; }
.foot-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.4fr; gap: 40px; padding: 56px 20px 42px; }
.foot-brand img.foot-logo { width: 150px; height: 75px; object-fit: cover; display: block; padding: 0; border-radius: 12px; margin-bottom: 18px; }
.foot-desc { line-height: 1.85; color: #8b9ea3; margin-bottom: 18px; }
.foot-social { display: flex; flex-direction: column; gap: 6px; }
.fs-item { color: #7d9196; }
.foot-col h4, .foot-contact h4 { color: #fff; font-size: 15px; margin-bottom: 18px; position: relative; padding-bottom: 12px; }
.foot-col h4::after, .foot-contact h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--brand-l); }
.foot-col li { margin-bottom: 10px; }
.foot-col a:hover { color: #fff; }
.foot-contact p { margin-bottom: 10px; line-height: 1.7; }
.foot-contact p span { display: inline-block; min-width: 46px; color: #6d8288; }
.foot-links { border-top: 1px solid rgba(255, 255, 255, .07); padding: 16px 0; font-size: 13px; }
.foot-links .wrap { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.foot-links a { color: #8b9ea3; }
.foot-links a:hover { color: #fff; }
.foot-bottom { border-top: 1px solid rgba(255, 255, 255, .07); padding: 18px 0; }
.foot-bottom .wrap { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 13px; color: #6d8288; }
.foot-bottom a:hover { color: #fff; }
.foot-tech { opacity: .55; }

/* ------------------------------------------------------------ 回到顶部 */
.back-top {
  position: fixed; right: 24px; bottom: 34px; width: 46px; height: 46px; border-radius: 50%;
  background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 20px; box-shadow: 0 8px 22px rgba(15, 118, 110, .35); opacity: 0; visibility: hidden;
  transition: .3s; z-index: 80;
}
.back-top.is-show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--brand-d); color: #fff; transform: translateY(-4px); }

/* ------------------------------------------------------------ 无障碍 */
.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 12px; top: -64px; z-index: 200;
  background: var(--brand); color: #fff; padding: 11px 20px; border-radius: 0 0 8px 8px;
  font-size: 14px; transition: top .2s;
}
.skip-link:focus { top: 0; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 4px; }

/* ------------------------------------------------------------ 外链标识 */
/* 后台给栏目 / 单页 / 轮播图配置了外部跳转链接时，前台加一个小箭头 */
.a-out {
  font-size: 11px; font-style: normal; margin-left: 3px;
  color: var(--brand); opacity: .65; vertical-align: 1px;
}
.cat-card-text h3 .a-out { color: var(--brand-l); }
.foot-col .a-out { color: #7fd8c8; }

/* 防止长英文 / URL / 连续字符撑破移动端布局 */
img, table, pre, iframe, video { max-width: 100%; }.rich, .p-card-body h3, .n-body h3, .sr-body h3, .pd-title, .pd-sub, .art-head h1,
.ci-list strong, .foot-desc, .slide-sub { overflow-wrap: anywhere; word-break: break-word; }
.rich img { height: auto; }

/* ------------------------------------------------------------ 响应式 */
@media (max-width: 1180px) {
  .p-grid { grid-template-columns: repeat(3, 1fr); }
  .nav-item > a { padding: 0 11px; font-size: 14px; }
  .head-search input { width: 96px; }
  .foot-top { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width: 980px) {
  .cat-grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .n-list { grid-template-columns: repeat(2, 1fr); }
  .about-inner { grid-template-columns: 1fr; gap: 30px; }
  .pd-top { grid-template-columns: 1fr; gap: 28px; }
  .list-layout, .page-layout { grid-template-columns: 1fr; }
  .side { position: static; }
  .side-cats { display: grid; grid-template-columns: repeat(3, 1fr); }
  .side-cats li a { border-bottom: 1px solid var(--line); }
  .contact-layout { grid-template-columns: 1fr; gap: 34px; }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
  .sec-related .p-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) and (pointer: coarse) {
  body { font-size: 14px; }
  .topbar { display: none; }
  .head-inner { height: 66px; gap: 12px; }
  .logo img { width: 104px; height: 52px; }
  .head-search, .head-hot { display: none; }
  .menu-btn { display: flex; }
  .head-right { margin-left: auto; } /* 汉堡菜单推到最右侧 */
  .nav {
    position: fixed; top: 66px; left: 0; right: 0; bottom: 0; background: #fff; z-index: 70;
    transform: translateX(-100%); transition: transform .3s; padding: 12px 0 40px;
    overflow-y: auto; overflow-x: hidden; overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch; width: 100%; max-width: 100%;
  }
  .sub-nav li a { white-space: normal; }
  .nav.is-open { transform: none; box-shadow: 0 20px 40px rgba(0, 0, 0, .12); }
  .nav > ul { display: block; }
  .nav-item > a { height: auto; padding: 15px 22px; border-bottom: 1px solid var(--line); font-size: 15px; }
  .nav-item > a::after { display: none; }
  .nav-item.is-active > a { background: var(--brand-soft); }
  .sub-nav { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; border-radius: 0; padding: 0; display: none; background: var(--bg-soft); }
  .sub-nav li a { text-align: right; padding: 13px 22px; } /* 二级菜单文字靠右 */
  .n-item { min-width: 0; }
  .n-body h3 { white-space: normal; } /* 新闻标题允许换行，防止撑破屏幕宽度 */
  .nav-item.has-sub.is-open .sub-nav { display: block; }
  .caret { margin-left: auto; }
  .hero { height: auto; min-height: 0; padding-bottom: 0; }
  .slide { position: relative; display: none; padding: 0; }
  .slide.is-active { display: block; }
  /* 轮播图完整显示：宽度=屏宽，高度随图片原始比例，不裁剪不固定比例 */
  .slide-bg { position: relative; inset: auto; height: auto; transform: none; transition: none; }
  .slide-bg img { width: 100%; height: auto; object-fit: contain; }
  .slide-bg::after { background: linear-gradient(180deg, rgba(8, 22, 26, 0) 55%, rgba(8, 22, 26, .88) 100%); }
  .slide-inner { position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; height: auto; padding: 14px 20px 16px; }
  .slide-title { font-size: 26px; margin-bottom: 8px; }
  .slide-sub { font-size: 14px; margin-bottom: 14px; }
  .slide-dots { position: relative; left: auto; bottom: auto; transform: none; margin: 10px auto 12px; justify-content: center; }
  .slide.no-img .slide-inner { position: relative; padding: 44px 20px 34px; }
  .hero-facts { position: static; }
  .hero-facts-inner { grid-template-columns: repeat(2, 1fr); }
  .hf-item { padding: 12px 0; }
  .hf-item:nth-child(2) { border-right: 0; }
  .hf-item strong { font-size: 22px; }
  .sec { padding: 46px 0; }
  .sec-title { font-size: 23px; }
  .sec-head { margin-bottom: 26px; }
  .sec-head.row { flex-direction: column; align-items: flex-start; gap: 10px; }
  .p-grid, .cat-grid, .case-grid, .why-grid, .n-list, .list-main .p-grid, .list-main .case-grid, .sec-related .p-grid { grid-template-columns: 1fr 1fr; }
  .p-card-body { padding: 13px; }
  .p-card-body h3 { font-size: 14.5px; }
  .p-card-desc { display: none; }
  .list-main .p-grid .p-card-desc { display: none; }
  .page-hero { padding: 44px 0 38px; }
  .page-hero-inner h1 { font-size: 24px; }
  .page-hero-inner p { font-size: 13px; }
  .side-cats { grid-template-columns: repeat(2, 1fr); }
  .pd-title { font-size: 23px; }
  .pd-keys { grid-template-columns: 1fr 1fr; }
  .article { padding-top: 26px; }
  .art-head h1 { font-size: 22px; }
  .info-grid { grid-template-columns: 1fr 1fr; }
  .dnav { grid-template-columns: 1fr; }
  .art-gallery { grid-template-columns: 1fr 1fr; }
  .cform-row { grid-template-columns: 1fr; }
  .contact-form-box { padding: 22px; }
  .ci-big { font-size: 22px !important; }
  .sr-item { gap: 14px; padding: 14px; }
  .sr-cover { flex: 0 0 100px; }
  .foot-top { grid-template-columns: 1fr; gap: 26px; padding: 40px 20px 30px; }
  .foot-bottom .wrap { justify-content: center; text-align: center; }
  .cta-inner { flex-direction: column; text-align: center; }
  .cta-text p { font-size: 13px; }
  .slide-dots { margin-bottom: 0; }

  /* —— 移动端可用性 —— */
  /* 规格表：把固定 220px 的列宽放开并允许横向滚动，避免 375px 屏溢出 */
  .spec-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .spec-table tbody { display: table; width: 100%; min-width: 300px; }
  .spec-table th, .spec-table td { padding: 12px 14px; font-size: 13.5px; }
  .spec-table th { width: auto; min-width: 86px; white-space: nowrap; }
  /* 缩略图与图库横向滚动，不换行挤压 */
  .pd-thumbs, .art-gallery { display: flex; flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; }
  .pd-thumb, .art-gallery .pd-thumb { flex: 0 0 auto; }
  /* iOS 上 input 字号 <16px 会触发自动放大，这里统一到 16px */
  .cform input, .cform textarea, .search-big input, .head-search input { font-size: 16px; }
  /* 触控目标不小于 44px */
  .pg-item { min-width: 44px; height: 44px; }
  .tab-btn { padding: 12px 16px; }
  .slide-dot { width: 12px; height: 12px; }
  .pd-acts .btn { flex: 1 1 100%; text-align: center; }

  /* —— 富文本正文在手机端的排版与媒体 —— */
  .rich { font-size: 14.5px; line-height: 1.85; }
  .rich h2, .rich h3 { font-size: 17px; padding-left: 11px; margin: 22px 0 10px; }
  .rich h4 { font-size: 15px; margin: 18px 0 8px; }
  .rich p { margin-bottom: 13px; }
  .rich img, .rich video { margin: 14px auto; }
  .rich .rwd-video { margin: 14px 0; }
  .rich blockquote { padding: 12px 14px; margin: 14px 0; }
  .rich table th, .rich table td { padding: 8px 11px; font-size: 13px; }
  .rich .rwd-table table { min-width: 400px; }
  .rich ul li, .rich ol li { padding-left: 20px; margin-bottom: 8px; }
}
@media (max-width: 420px) and (pointer: coarse) {
  .p-grid, .cat-grid, .case-grid, .why-grid, .n-list, .list-main .p-grid, .list-main .case-grid, .sec-related .p-grid { grid-template-columns: 1fr; }
  .pd-keys { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .side-cats { grid-template-columns: 1fr; }
  .sec-title { font-size: 21px; }
  .list-toolbar { flex-direction: column; align-items: flex-start; gap: 6px; }
  .contact-form-box { padding: 16px; }
}