/* ==========================================================================
   JDPacking 业务分站 — 前台样式（对齐原站 jd-packing.com）
   主色 #0a75b6 / 强调橙 #ff6600 / 深灰页脚 #3a3a3a
   ========================================================================== */

:root {
  --primary: #0a75b6;
  --primary-dark: #0663aa;
  --accent: #00aadc;
  --highlight: #ff6600;
  --ink: #333;
  --ink-2: #414141;
  --muted: #888;
  --line: #e8e8e8;
  --bg: #f5f5f5;
  --white: #fff;
  --radius: 4px;
  --shadow-sm: 0 2px 10px rgba(16, 42, 67, .07);
  --shadow-md: 0 12px 34px rgba(16, 42, 67, .12);
  --wrap: 1240px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
@supports not (overflow: clip) { body { overflow-x: hidden; } }
body {
  margin: 0; font-family: var(--font); color: var(--ink); background: var(--white);
  font-size: 15px; line-height: 1.75; -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .2s, opacity .2s; }
a:hover { color: var(--primary); }
h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.35; font-weight: 700; color: var(--ink); }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 14px; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.wrap.narrow { max-width: 900px; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 12px; top: 12px; background: var(--primary); color: #fff; padding: 8px 14px; z-index: 99; }
.empty-tip { padding: 44px 0; text-align: center; color: var(--muted); }
.ico { flex: none; }

/* ---------------------------------------------------------------- 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 26px; border-radius: var(--radius); border: 1px solid transparent;
  font-size: 15px; font-weight: 500; cursor: pointer; transition: all .22s ease; white-space: nowrap;
}
.btn-pill { border-radius: 30px; padding: 12px 34px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn-outline { background: #fff; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }

/* ---------------------------------------------------------------- 顶部蓝条 */
.topbar { background: var(--primary); color: #fff; font-size: 14px; }
.topbar-in { display: flex; justify-content: flex-end; align-items: center; gap: 34px; height: 44px; }
.topbar a { display: inline-flex; align-items: center; gap: 8px; color: #fff; }
.topbar a:hover { color: rgba(255, 255, 255, .82); }

/* ---------------------------------------------------------------- 头部 */
.hdr { background: #fff; position: sticky; top: 0; z-index: 60; transition: background .25s; }
.hdr.is-stuck { background: var(--primary); box-shadow: var(--shadow-sm); }
.hdr-in { display: flex; align-items: center; gap: 26px; height: 92px; }
.logo { display: flex; align-items: center; gap: 10px; flex: none; }
.logo img { height: 54px; width: auto; }
.logo .logo-white { display: none; }
.hdr.is-stuck .logo .logo-white { display: block; }
.hdr.is-stuck .logo .logo-dark { display: none; }
.hdr.is-stuck .logo .logo-text { color: #fff; }
.logo-text { font-size: 24px; font-weight: 800; color: var(--primary); letter-spacing: -.01em; }
.logo-tag { font-size: 12px; color: var(--muted); border-left: 1px solid var(--line); padding-left: 10px; line-height: 1.3; max-width: 130px; }
.hdr.is-stuck .logo-tag { color: rgba(255, 255, 255, .85); border-color: rgba(255, 255, 255, .3); }
.nav { flex: 1; display: flex; justify-content: flex-end; min-width: 0; }
.nav-list { display: flex; align-items: center; }
.nav-item { position: relative; }
.nav-item > a {
  display: inline-flex; align-items: center; height: 92px; padding: 0 14px;
  font-size: 16px; color: var(--ink-2); white-space: nowrap;
}
.nav-item:hover > a, .nav-item.is-active > a { color: var(--primary); }
.hdr.is-stuck .nav-item > a { color: #fff; }
.hdr.is-stuck .nav-item:hover > a, .hdr.is-stuck .nav-item.is-active > a { color: rgba(255, 255, 255, .78); }
.nav-sub {
  position: absolute; top: 100%; left: 0; min-width: 240px; background: #fff;
  box-shadow: var(--shadow-md); padding: 8px 0; border-top: 2px solid var(--primary);
  opacity: 0; visibility: hidden; transform: translateY(6px); transition: all .2s;
}
.nav-item.has-sub:hover .nav-sub { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-sub a { display: block; padding: 9px 20px; font-size: 14px; color: var(--ink-2); }
.nav-sub a:hover { background: var(--bg); color: var(--primary); }
.hdr-tools { display: flex; align-items: center; gap: 6px; flex: none; }
.hdr-search { background: none; border: 0; color: var(--ink); padding: 8px; display: grid; place-items: center; }
.hdr.is-stuck .hdr-search { color: #fff; }
.nav-toggle { display: none; background: none; border: 0; color: var(--ink); padding: 8px; }
.hdr.is-stuck .nav-toggle { color: #fff; }
.hdr-searchbar { border-top: 1px solid var(--line); background: #fff; padding: 14px 0; }
.hdr.is-stuck .hdr-searchbar { border-color: rgba(255, 255, 255, .2); }
.search-form { display: flex; max-width: 640px; margin: 0 auto; }
.search-form input { flex: 1; padding: 11px 16px; border: 1px solid var(--line); border-right: 0; border-radius: 4px 0 0 4px; outline: 0; }
.search-form button { background: var(--primary); color: #fff; border: 0; padding: 0 22px; border-radius: 0 4px 4px 0; display: grid; place-items: center; }

/* ---------------------------------------------------------------- 轮播
   高度由「当前激活的那张图」按原始比例撑开，任何比例的横幅都不会被裁切。 */
.hero { position: relative; overflow: hidden; background: #eef1f4; }
.hero-track { position: relative; }
.slide { position: absolute; inset: 0; opacity: 0; transition: opacity .8s ease; pointer-events: none; }
.slide.is-active { position: relative; inset: auto; opacity: 1; pointer-events: auto; }
.slide a { display: block; }
.slide img { width: 100%; height: auto; display: block; }
.slide-cap {
  position: absolute; left: 0; right: 0; bottom: 0; color: #fff; padding: 90px 0 56px;
  background: linear-gradient(to top, rgba(6, 20, 35, .82), rgba(6, 20, 35, .28) 60%, rgba(6, 20, 35, 0));
}
.slide-cap h2 { color: #fff; font-size: 40px; max-width: 640px; margin-bottom: 8px; }
.slide-cap p { max-width: 640px; color: rgba(255, 255, 255, .92); margin: 0; }
.hero-dots { position: absolute; left: 0; right: 0; bottom: 18px; display: flex; justify-content: center; gap: 8px; z-index: 2; }
.dot { width: 26px; height: 4px; border: 0; border-radius: 2px; background: rgba(255, 255, 255, .5); padding: 0; }
.dot.is-active { background: #fff; width: 38px; }

/* ---------------------------------------------------------------- 搜索 + 社交 */
.sec-search { padding: 52px 0 44px; background: #fff; }
.search-hero { display: flex; max-width: 700px; margin: 0 auto; height: 58px; }
.search-hero input {
  flex: 1; padding: 0 24px; border: 1px solid var(--line); border-right: 0;
  border-radius: 4px 0 0 4px; outline: 0; font-size: 15px; color: var(--ink);
}
.search-hero input::placeholder { color: #aaa; }
.search-hero button { width: 96px; background: var(--primary); color: #fff; border: 0; border-radius: 0 4px 4px 0; display: grid; place-items: center; }
.search-hero button:hover { background: var(--primary-dark); }
.socials { display: flex; justify-content: center; gap: 18px; margin-top: 40px; flex-wrap: wrap; }
.social {
  width: 54px; height: 54px; border-radius: 50%; border: 1px solid var(--primary);
  display: grid; place-items: center; color: var(--primary); transition: all .22s;
}
.social:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }

/* ---------------------------------------------------------------- 通用板块 */
.sec { padding: 72px 0; }
.sec-plain { background: #fff; }
.sec-head { text-align: center; max-width: 860px; margin: 0 auto 42px; }
.sec-head.is-left { text-align: left; margin-left: 0; }
.sec-title { font-size: 30px; font-weight: 500; letter-spacing: -.01em; margin-bottom: 12px; color: var(--ink); }
.sec-sub { color: var(--muted); font-size: 15px; margin: 0; }
.sec-cta { text-align: center; margin-top: 38px; }
.rich { color: var(--ink-2); }
.rich p { margin-bottom: 1.1em; }
.rich img { display: inline-block; vertical-align: middle; margin: 10px 0; max-width: 100%; height: auto; }
.rich p[style*="center"] { text-align: center; }
.rich > div:empty { display: none; }
.rich h3 { margin-top: 1.5em; font-size: 19px; }
.rich ul { list-style: disc; padding-left: 22px; margin-bottom: 1.1em; }
.rich table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14px; }
.rich th, .rich td { border: 1px solid var(--line); padding: 9px 12px; text-align: center; }
.rich th { background: #f5f5f5; font-weight: 700; }
.rich strong { color: var(--primary); }

/* ---------------------------------------------------------------- 公司简介 */
.about-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: center; margin-bottom: 40px; }
.about-media img { width: 100%; border-radius: 4px; }
.about-body .rich { font-size: 15px; line-height: 1.95; color: var(--ink); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); margin: 34px 0 0; }
.stat { text-align: center; border-left: 1px solid var(--line); padding: 0 8px; }
.stat:first-child { border-left: 0; }
.stat b { display: block; font-size: 34px; line-height: 1.1; color: var(--highlight); font-weight: 700; }
.stat b em { font-style: normal; font-size: 16px; margin-left: 2px; vertical-align: 6px; }
.stat span { font-size: 14px; color: var(--muted); }
.about-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; max-width: 900px; margin: 0 auto; }
.afeat { text-align: center; padding: 6px 34px; border-left: 1px solid var(--line); }
.afeat:first-child { border-left: 0; }
.afeat h4 { font-size: 17px; color: var(--highlight); margin-bottom: 6px; }
.afeat h4 em { font-style: normal; display: block; }
.afeat p { color: var(--muted); font-size: 14.5px; margin: 0; }

/* ---------------------------------------------------------------- 产品卡片 */
.pgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.pcard { text-align: center; }
.pcard-media {
  display: block; aspect-ratio: 1 / 1; background: #fafafa; overflow: hidden;
  border: 1px solid #f0f0f0; border-radius: 3px; margin-bottom: 14px;
}
.pcard-media img { width: 100%; height: 100%; object-fit: contain; transition: transform .4s; }
.pcard:hover .pcard-media img { transform: scale(1.05); }
.pcard-media .ph { display: block; width: 100%; height: 100%; }
.pcard-name { font-size: 15px; font-weight: 400; color: var(--ink); margin: 0 0 6px; line-height: 1.5; }
.pcard-name a { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 44px; }
.pcard:hover .pcard-name a { color: var(--primary); }
.pcard-model { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------------------------------------------------------------- 分类板块 */
.sec-cat .cat-banner { margin-bottom: 42px; }
.sec-cat .cat-banner img { width: 100%; height: auto; }
.cat-block { margin-bottom: 60px; }
.cat-block:last-child { margin-bottom: 0; }

/* ---------------------------------------------------------------- 新闻 */
.ngrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.ncard-media { display: block; aspect-ratio: 16 / 10; background: var(--bg); overflow: hidden; margin-bottom: 14px; }
.ncard-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.ncard:hover .ncard-media img { transform: scale(1.04); }
.ncard-title { font-size: 15.5px; font-weight: 400; line-height: 1.55; margin: 0 0 6px; }
.ncard-title a { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.ncard:hover .ncard-title a { color: var(--primary); }
.ncard-date { font-size: 13px; color: var(--muted); margin: 0; }

/* ---------------------------------------------------------------- 视频中心 */
.vgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.vgrid-3 { grid-template-columns: repeat(3, 1fr); }
.vcard { display: block; }
.vcard-media { position: relative; display: block; aspect-ratio: 16 / 9; background: #eef1f4; overflow: hidden; margin-bottom: 12px; border: 1px solid #f0f0f0; }
.vcard-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.vcard:hover .vcard-media img { transform: scale(1.04); }
.vplay { position: absolute; inset: 0; margin: auto; width: 46px; height: 46px; border-radius: 50%; background: rgba(10, 117, 182, .92); color: #fff; display: grid; place-items: center; transition: background .2s; }
.vcard:hover .vplay { background: var(--highlight); }
.vcard-title { display: block; font-size: 14.5px; font-weight: 400; line-height: 1.5; margin: 0; }
.vcard-title a { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.vcard:hover .vcard-title a { color: var(--primary); }
.video-layout { display: grid; grid-template-columns: 240px 1fr; gap: 40px; align-items: start; }
.video-side { border-right: 1px solid #f0f0f0; padding-right: 20px; }
.vs-list li { border-bottom: 1px solid #f4f4f4; }
.vs-list a { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 12px 2px; font-size: 15px; color: var(--ink); }
.vs-list a em { font-style: normal; font-size: 12px; color: #b0b0b0; }
.vs-list li:hover a, .vs-list li.is-active a { color: var(--primary); }
.vs-list li.is-active a { font-weight: 600; }
.vs-list li.is-active a em { color: var(--primary); }
.faq-list { display: grid; gap: 10px; }
.faq-item { border: 1px solid var(--line); border-radius: 3px; overflow: hidden; }
.faq-item summary { padding: 16px 48px 16px 20px; font-weight: 600; cursor: pointer; position: relative; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); font-size: 22px; color: var(--primary); line-height: 1; }
.faq-item[open] summary::after { content: "–"; }
.faq-item[open] summary { color: var(--primary); border-bottom: 1px solid var(--line); }
.faq-item .rich { padding: 16px 20px; }
.plgrid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.plitem { display: grid; place-items: center; border: 1px solid var(--line); border-radius: 3px; padding: 18px; min-height: 92px; }
.plitem img { max-height: 52px; width: auto; filter: grayscale(1); opacity: .7; }
.plitem:hover img { filter: none; opacity: 1; }

/* ---------------------------------------------------------------- 询盘区 */
.feedback {
  background-color: var(--primary); background-size: cover; background-position: center;
  position: relative; color: #fff; padding: 68px 0;
}
.feedback::before { content: ""; position: absolute; inset: 0; background: rgba(10, 117, 182, .86); }
.fb-in { position: relative; display: grid; grid-template-columns: 1fr 520px; gap: 60px; align-items: center; }
.fb-lead { font-size: 19px; line-height: 1.85; color: #fff; margin-bottom: 26px; max-width: 480px; }
.fb-manager { font-size: 16px; color: rgba(255, 255, 255, .95); margin: 0; }
.fb-form h3 { color: #fff; font-size: 25px; margin-bottom: 20px; }
.fb-form .sales-card { background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .25); }
.fb-form .sales-name { color: #fff; }
.fb-form .sales-links a { color: #fff; }

/* 询盘表单 */
.inq-form { display: grid; gap: 12px; }
.inq-title { font-size: 19px; margin-bottom: 2px; }
.inq-form input, .inq-form textarea {
  width: 100%; padding: 14px 18px; border: 0; border-radius: 3px; background: #fff; color: var(--ink);
  transition: box-shadow .2s; resize: vertical;
}
.inq-form input:focus, .inq-form textarea:focus { outline: 0; box-shadow: 0 0 0 3px rgba(10, 117, 182, .22); }
.inq-form .btn { justify-self: center; margin-top: 8px; }
.inq-note { margin: 0; font-size: 13.5px; min-height: 18px; }
.inq-note.is-ok { color: #b8f5cf; }
.inq-note.is-err { color: #ffd3cf; }
.cat-inquiry .inq-note.is-ok { color: #0a8f4d; }
.cat-inquiry .inq-note.is-err { color: #d1332e; }
.cat-inquiry .inq-form input, .cat-inquiry .inq-form textarea { background: #fafafa; border: 1px solid var(--line); }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

/* 业务员名片 */
.sales-card { display: flex; gap: 16px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 16px; margin-top: 22px; }
.sales-avatar { width: 62px; height: 62px; border-radius: 50%; object-fit: cover; flex: none; background: var(--bg); display: grid; place-items: center; color: var(--primary); }
.sales-name { font-weight: 700; margin: 0; font-size: 16px; }
.sales-title { font-size: 13px; color: var(--muted); margin: 2px 0 8px; }
.sales-links { display: flex; flex-wrap: wrap; gap: 14px; font-size: 13px; }
.sales-links a { display: inline-flex; align-items: center; gap: 5px; color: var(--primary); font-weight: 600; }
.sales-note { font-size: 12.5px; color: var(--muted); margin: 8px 0 0; }

/* ---------------------------------------------------------------- 订阅栏 */
.newsletter, .sec-nl { background: #4a4a4a; padding: 26px 0; }
.nl-form, .nl-inline { display: flex; max-width: 560px; margin: 0 auto; }
.nl-form input, .nl-inline input {
  flex: 1; padding: 13px 18px; border: 0; border-radius: 3px 0 0 3px; outline: 0; background: #fff;
}
.nl-form .btn, .nl-inline .btn { border-radius: 0 3px 3px 0; padding: 13px 28px; }

/* ---------------------------------------------------------------- 页脚 */
.ftr { background: #3a3a3a; color: #b8b8b8; font-size: 14px; padding: 56px 0 0; }
.ftr-in { display: grid; grid-template-columns: repeat(4, 1fr) 1.35fr; gap: 34px; }
.f-col h4 { color: #fff; font-size: 16px; margin-bottom: 20px; position: relative; padding-bottom: 12px; }
.f-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 36px; height: 2px; background: var(--highlight); }
.f-col ul { display: grid; gap: 11px; }
.f-col ul li { position: relative; padding-left: 14px; font-size: 14px; line-height: 1.55; }
.f-col ul li::before { content: ""; position: absolute; left: 0; top: 9px; width: 4px; height: 4px; border-radius: 50%; background: var(--highlight); }
.f-col a { color: #b8b8b8; }
.f-col a:hover { color: #fff; }
.f-contact { margin-left: -14px; }
.f-contact h4 { margin-bottom: 18px; }
.f-contact ul li { padding-left: 0; }
.f-contact ul li::before { display: none; }
.f-logo { max-height: 46px; margin-bottom: 18px; }
.f-contact .ico { color: var(--highlight); margin-top: 5px; }
.f-contact li { display: flex; gap: 10px; align-items: flex-start; }
.f-contact b { color: #fff; font-weight: 600; }
.f-contact .socials { justify-content: flex-start; gap: 10px; margin-top: 18px; }
.f-contact .social { width: 36px; height: 36px; border-color: rgba(255, 255, 255, .25); color: #cfcfcf; }
.f-contact .social:hover { background: var(--highlight); border-color: var(--highlight); color: #fff; }
.ftr-copy { border-top: 1px solid rgba(255, 255, 255, .1); margin-top: 46px; }
.ftr-copy-in { display: flex; justify-content: space-between; gap: 20px; padding: 20px; font-size: 13px; flex-wrap: wrap; }
.ftr-copy p { margin: 0; }
.ftr-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* ---------------------------------------------------------------- 浮动工具 */
.float-bar { position: fixed; right: 16px; bottom: 120px; display: grid; gap: 6px; z-index: 50; }
.fb-item {
  width: 50px; height: 50px; border-radius: 4px; background: #9e9e9e; color: #fff; border: 0;
  display: grid; place-items: center; transition: all .22s;
}
.fb-item:hover { background: var(--primary); color: #fff; }
.mobile-bar { display: none; }

/* ---------------------------------------------------------------- 弹窗 */
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 20px; }
.modal[hidden] { display: none; }
.modal-mask { position: absolute; inset: 0; background: rgba(9, 26, 42, .66); }
.modal-box { position: relative; width: 100%; max-width: 880px; background: #fff; border-radius: 6px; overflow: hidden; box-shadow: var(--shadow-md); max-height: 92vh; overflow-y: auto; }
.modal-close { position: absolute; right: 12px; top: 12px; z-index: 3; width: 38px; height: 38px; border-radius: 50%; border: 0; background: rgba(255, 255, 255, .18); color: #fff; display: grid; place-items: center; }
.modal-grid { display: grid; grid-template-columns: 330px 1fr; }
.modal-side { background: var(--primary); color: #fff; padding: 34px 28px; }
.modal-side h3 { color: #fff; font-size: 22px; }
.modal-contact { display: grid; gap: 12px; margin-top: 20px; font-size: 13.5px; }
.modal-contact li { display: flex; gap: 10px; align-items: flex-start; color: rgba(255, 255, 255, .94); }
.modal-main { padding: 34px 30px; }
.modal-main .inq-form input, .modal-main .inq-form textarea { background: #f7f8fa; border: 1px solid var(--line); }

/* ---------------------------------------------------------------- 内页头 / 面包屑 */
.page-hero { background: linear-gradient(120deg, #10293f, #17324a); padding: 46px 0 38px; color: #fff; }
.page-hero h1 { color: #fff; font-size: 28px; margin: 0 0 6px; }
.page-hero p { color: rgba(255, 255, 255, .78); margin: 0; }
.crumbs { margin-bottom: 14px; font-size: 13.5px; color: rgba(255, 255, 255, .72); display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.crumbs a:hover { color: #fff; }
.crumbs i { font-style: normal; opacity: .5; }
.page-body { padding: 26px 0 60px; }
.page-body .crumbs { color: #999; margin: 0 0 22px; }
.page-body .crumbs a:hover { color: var(--primary); }

/* ---------------------------------------------------------------- 分类树侧栏 */
.pd-side { border-right: 1px solid #f0f0f0; padding-right: 24px; }
.cs-list { display: grid; gap: 2px; }
.cs-top { position: relative; }
.cs-top > a { display: block; padding: 11px 26px 11px 0; font-size: 15px; color: var(--ink); border-bottom: 1px solid #f4f4f4; }
.cs-top:hover > a, .cs-top > a.is-active { color: var(--primary); }
.cs-chev { position: absolute; right: 6px; top: 13px; color: #bbb; }
.cs-sub { display: none; padding: 6px 0 10px 14px; }
.cs-top.is-open .cs-sub { display: block; }
.cs-sub li { position: relative; padding-left: 20px; }
.cs-sub li::before { content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 12px; height: 12px; border: 1px solid #cfcfcf; border-radius: 50%; }
.cs-sub li.is-active::before { border-color: var(--primary); background: radial-gradient(circle at center, var(--primary) 0 45%, transparent 46%); }
.cs-sub a { display: block; padding: 7px 0; font-size: 14px; color: var(--ink-2); }
.cs-sub li:hover a, .cs-sub li.is-active a { color: var(--primary); }

/* ---------------------------------------------------------------- 分类页 */
.cat-layout { display: grid; grid-template-columns: 250px 1fr; gap: 40px; align-items: start; }
.cat-main { min-width: 0; }
.subnav { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.subnav a { padding: 8px 18px; border: 1px solid var(--line); border-radius: 20px; font-size: 13.5px; }
.subnav a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.cat-inquiry { max-width: 620px; margin: 50px auto 0; }
.cat-inquiry .inq-form { border: 1px solid var(--line); border-radius: 6px; padding: 24px; }

/* ---------------------------------------------------------------- 产品详情 */
.pd { display: grid; grid-template-columns: 232px minmax(0, 1fr) minmax(0, 1.08fr); gap: 34px; align-items: start; margin-bottom: 50px; }
.pd-media { min-width: 0; }
.pd-main { position: relative; background: #fafafa; border: 1px solid #f0f0f0; aspect-ratio: 1 / 1; display: grid; place-items: center; overflow: hidden; }
.pd-main img { width: 100%; height: 100%; object-fit: contain; }
.pd-play {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 62px; height: 62px; border-radius: 50%; border: 2px solid #fff; background: rgba(0, 0, 0, .35);
  color: #fff; display: grid; place-items: center;
}
.pd-play:hover { background: var(--primary); }
.pd-thumbs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin-top: 12px; }
.pd-thumb { padding: 0; border: 1px solid #eee; background: #fff; aspect-ratio: 1 / 1; overflow: hidden; }
.pd-thumb img { width: 100%; height: 100%; object-fit: contain; }
.pd-thumb.is-active { border-color: var(--primary); }
.pd-info { min-width: 0; }
.pd-info h1 { font-size: 26px; padding-bottom: 12px; border-bottom: 2px solid #f0f0f0; position: relative; margin-bottom: 14px; }
.pd-info h1::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 78px; height: 2px; background: var(--primary); }
.pd-sku { font-size: 15px; color: var(--ink-2); margin-bottom: 16px; }
.pd-price {
  background: var(--highlight); color: #fff; border-radius: 8px; padding: 16px 22px; margin: 0 0 22px;
  display: flex; align-items: baseline; gap: 10px;
}
.pd-price-label { font-size: 15px; }
.pd-price-value { font-size: 26px; font-weight: 700; }
.pd-intro { font-size: 14.5px; margin-bottom: 20px; }
.pd-intro strong { color: var(--primary); font-size: 15px; }
.pd-intro .rich strong, .pd-intro strong { color: #17365d; }
.pd-models { margin-bottom: 24px; font-size: 15px; }
.pd-models b { color: var(--primary); margin-right: 10px; }
.model-chip {
  display: inline-flex; align-items: center; background: #f2f4f6; border-radius: 4px;
  padding: 6px 14px; margin: 4px 8px 4px 0; font-size: 13.5px; color: var(--ink-2);
}
.pd-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.pd-info > .sales-card { margin-top: 24px; }

/* 详情页选项卡 */
.pd-tabs { margin: 10px 0 56px; }
.pd-tabs > input { position: absolute; opacity: 0; pointer-events: none; }
.tab-labels { display: flex; gap: 44px; border-bottom: 1px solid var(--line); }
.tab-labels label { padding: 15px 2px; font-size: 16px; color: var(--ink-2); cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -1px; }
#pdtab-desc:checked ~ .tab-labels label[for="pdtab-desc"],
#pdtab-feat:checked ~ .tab-labels label[for="pdtab-feat"],
#pdtab-video:checked ~ .tab-labels label[for="pdtab-video"] { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tab-panels > .tab-panel { display: none; padding-top: 28px; }
#pdtab-desc:checked ~ .tab-panels > .tab-panel:nth-child(1),
#pdtab-feat:checked ~ .tab-panels > .tab-panel:nth-child(2),
#pdtab-video:checked ~ .tab-panels > .tab-panel:nth-child(3) { display: block; }
.video-embed { position: relative; padding-top: 56.25%; }
.video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.pd-related { border-top: 1px solid var(--line); padding-top: 46px; }
.article-cover { width: 100%; margin-bottom: 24px; }
.article-foot { margin-top: 32px; }
.nf { text-align: center; padding: 110px 0; }
.nf h1 { font-size: 74px; color: var(--primary); margin-bottom: 0; }

/* 行业卡片 */
.igrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.icard { display: block; border: 1px solid #f0f0f0; overflow: hidden; transition: all .25s; }
.icard:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.icard-media { display: block; aspect-ratio: 4 / 3; background: #fafafa; overflow: hidden; }
.icard-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.icard:hover .icard-media img { transform: scale(1.05); }
.icard-body { display: block; padding: 14px 16px 18px; text-align: center; }
.icard-body b { display: block; font-size: 15.5px; font-weight: 400; }
.icard-body em { font-style: normal; font-size: 12.5px; color: var(--muted); }
.icard:hover .icard-body b { color: var(--primary); }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-list { display: grid; gap: 16px; margin-top: 22px; }
.contact-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink-2); }
.contact-list li .ico { color: var(--primary); margin-top: 4px; }
.contact-form { border: 1px solid var(--line); border-radius: 6px; padding: 28px; }
.contact-form .inq-form input, .contact-form .inq-form textarea { background: #fafafa; border: 1px solid var(--line); }
.contact-info .socials { justify-content: flex-start; margin-top: 24px; }

/* ---------------------------------------------------------------- 响应式 */
@media (max-width: 1180px) {
  .pd { grid-template-columns: 210px minmax(0, 1fr) minmax(0, 1fr); gap: 24px; }
}
@media (max-width: 1024px) {
  .vgrid, .igrid { grid-template-columns: repeat(3, 1fr); }
  .ftr-in { grid-template-columns: repeat(2, 1fr); }
  .f-contact { grid-column: 1 / -1; margin-left: 0; }
  .fb-in { grid-template-columns: 1fr; gap: 34px; }
  .fb-lead { max-width: none; }
  .plgrid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 900px) {
  .nav {
    position: fixed; inset: 0 0 0 auto; width: min(84vw, 340px); background: #fff;
    transform: translateX(100%); transition: transform .28s; z-index: 80; display: block;
    padding: 80px 0 30px; overflow-y: auto; box-shadow: var(--shadow-md);
  }
  .nav.is-open { transform: translateX(0); }
  .nav-list { display: block; padding: 0 22px; }
  .nav-item > a { height: auto; padding: 13px 0; width: 100%; border-bottom: 1px solid var(--line); justify-content: space-between; color: var(--ink-2) !important; }
  .nav-sub { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 0 0 8px 14px; min-width: 0; }
  .nav-sub a { padding: 8px 0; font-size: 13.5px; }
  .nav-toggle { display: grid; place-items: center; }
  .hdr-in { height: 70px; }
  .logo img { height: 42px; }
  .logo-tag { display: none; }
  .slide-cap h2 { font-size: 28px; }
  .about-grid, .contact-grid, .cat-layout, .video-layout { grid-template-columns: 1fr; gap: 28px; }
  .video-side { border-right: 0; border-bottom: 1px solid #f0f0f0; padding: 0 0 12px; }
  .vs-list { display: flex; flex-wrap: wrap; gap: 8px; }
  .vs-list li { border: 1px solid var(--line); border-radius: 20px; }
  .vs-list a { padding: 7px 14px; font-size: 13.5px; }
  .about-features { grid-template-columns: 1fr; gap: 20px; }
  .afeat { border-left: 0; padding: 0; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 20px 0; }
  .stat { border-left: 0; }
  .ngrid { grid-template-columns: repeat(2, 1fr); }
  /* 搜索框：按钮收成图标宽，给输入框留足空间 */
  .search-hero { height: 52px; }
  .search-hero input { padding: 0 16px; font-size: 14px; }
  .search-hero button { width: 58px; }
  /* 社交图标：缩小到一行放得下 6 个 */
  .socials { gap: 12px; margin-top: 28px; flex-wrap: nowrap; }
  .social { width: 44px; height: 44px; }
  .sec-search { padding: 34px 0 32px; }
  .sec { padding: 48px 0; }
  .sec-title { font-size: 24px; }
  .pd { grid-template-columns: 1fr; }
  .pd-side { border-right: 0; border-bottom: 1px solid #f0f0f0; padding: 0 0 18px; }
  .pd-main { max-width: 460px; margin: 0 auto; }
  .pd-thumbs { grid-template-columns: repeat(5, 1fr); max-width: 460px; margin: 12px auto 0; }
  .modal-grid { grid-template-columns: 1fr; }
  .float-bar { display: none; }
  .mobile-bar {
    display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; position: fixed; left: 0; right: 0; bottom: 0;
    background: #fff; border-top: 1px solid var(--line); z-index: 70; box-shadow: 0 -4px 16px rgba(16, 42, 67, .08);
  }
  .mobile-bar a, .mobile-bar button {
    display: grid; place-items: center; gap: 3px; padding: 9px 0; font-size: 11px; color: var(--ink-2); background: none; border: 0;
  }
  body { padding-bottom: 58px; }
  .plgrid { grid-template-columns: repeat(3, 1fr); }
  .fb-form { max-width: 560px; }
}
@media (max-width: 560px) {
  .topbar-in { gap: 18px; font-size: 13px; height: 40px; justify-content: center; }
  .topbar a span { display: inline; }
  .search-hero input { padding: 0 14px; font-size: 13.5px; }
  .socials { gap: 10px; }
  .social { width: 40px; height: 40px; }
  .ngrid, .plgrid { grid-template-columns: 1fr; }
  .pgrid, .vgrid, .igrid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .slide-cap { padding: 46px 0 30px; }
  .slide-cap h2 { font-size: 22px; }
  .stat b { font-size: 26px; }
  .pd-price-value { font-size: 22px; }
  .tab-labels { gap: 24px; }
  .ftr-in { grid-template-columns: 1fr; }
  .ftr-copy-in { flex-direction: column; }
}

/* 与原站 .index.css @media(max-width:750px) 对齐 */
@media (max-width: 750px) {
  .topbar { display: none; }
  .hdr-in { height: 60px; }
  .logo img { height: 38px; }
  .logo-text { font-size: 19px; }
  .hdr-search { padding: 6px; }
  .sec { padding: 34px 0; }
  .sec-search { padding: 22px 0 20px; }
  .sec-head { margin-bottom: 24px; }
  .sec-title { font-size: 20px; }
  .sec-sub { font-size: 13.5px; }
  .sec-cta { margin-top: 24px; }
  .btn { padding: 10px 22px; font-size: 14px; }
  .btn-pill { padding: 10px 26px; }
  .pcard-name { font-size: 13.5px; }
  .pcard-name a { min-height: 38px; }
  .pcard-model { font-size: 12.5px; }
  .pcard-media { margin-bottom: 10px; }
  .pcard-name { margin-bottom: 4px; }
  .stats { margin-top: 22px; }
  .stat b { font-size: 22px; }
  .stat b em { font-size: 12px; vertical-align: 3px; }
  .stat span { font-size: 12px; }
  .about-grid { gap: 20px; margin-bottom: 26px; }
  .about-body .rich { font-size: 13.5px; line-height: 1.85; }
  .afeat h4 { font-size: 15px; }
  .afeat p { font-size: 13px; }
  .socials { gap: 10px; margin-top: 22px; }
  .social { width: 40px; height: 40px; }
  .search-hero { height: 48px; }
  .search-hero input { padding: 0 14px; font-size: 13px; }
  .search-hero button { width: 54px; }
  .ncard-title { font-size: 14px; }
  .fb-lead { font-size: 14.5px; line-height: 1.8; }
  .fb-form h3 { font-size: 18px; }
  .inq-form input, .inq-form textarea { padding: 11px 14px; font-size: 13.5px; }
  .ftr { padding-top: 34px; }
  .f-col h4 { font-size: 15px; margin-bottom: 14px; }
  .f-col ul li { font-size: 13px; }
  .ftr-copy { margin-top: 28px; }
  /* 移动端保留侧边快捷联系（与原站一致）：4 个小方块，避免遮挡内容 */
  .float-bar { display: grid; right: 5px; bottom: 68px; gap: 4px; }
  .fb-item { width: 33px; height: 33px; border-radius: 3px; background: rgba(158, 158, 158, .88); }
  .fb-item .ico { width: 16px; height: 16px; }
  .fb-contact { display: none; }
  .mobile-bar a, .mobile-bar button { padding: 7px 0; font-size: 10.5px; }
  body { padding-bottom: 54px; }
  .page-hero { padding: 26px 0 22px; }
  .page-hero h1 { font-size: 20px; }
  .crumbs { font-size: 12.5px; margin-bottom: 10px; }
  .pd { gap: 20px; }
  .pd-info h1 { font-size: 20px; }
  .pd-price { padding: 12px 16px; }
  .pd-price-value { font-size: 20px; }
  .pd-intro { font-size: 13.5px; }
  .model-chip { font-size: 12.5px; padding: 5px 10px; }
  .tab-labels { gap: 26px; }
  .tab-labels label { font-size: 15px; padding: 12px 2px; }
  .cat-layout { gap: 20px; }
  .faq-item summary { padding: 13px 42px 13px 14px; font-size: 14px; }
  .pgrid, .vgrid, .igrid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .ngrid { grid-template-columns: 1fr; }
}