/* ===== 友诚管道 · 外贸站样式 ===== */
:root {
  --navy: #0a1c2e;
  --navy-2: #123453;
  --steel: #274b6d;
  --steel-l: #3f6b93;
  --accent: #e4551d;
  --accent-d: #c4460f;
  --blue: #14639b;
  --bg: #f5f7f9;
  --panel: #ffffff;
  --line: #e2e8ef;
  --line-d: #cfd9e4;
  --text: #12222f;
  --muted: #61758a;
  --ok: #0f7b53;
  --radius: 4px;
  --shadow: 0 2px 10px rgba(12, 32, 52, .06);
  --shadow-lg: 0 12px 40px rgba(12, 32, 52, .12);
  --max: 1240px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", "Inter", "Helvetica Neue", Arial, "Noto Sans", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.65;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 800; line-height: 1.2; letter-spacing: -.01em; }
p { margin: 0 0 12px; }
ul { margin: 0; padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- 顶部联系条 ---------- */
.topbar {
  background: var(--navy);
  color: #c8d7e5;
  font-size: 13px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 38px; }
.topbar-left { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.topbar a { color: #eaf2f9; display: inline-flex; align-items: center; gap: 6px; }
.topbar a:hover { color: #fff; }
.topbar .tb-item { display: inline-flex; align-items: center; gap: 6px; }
.topbar .tb-label { color: #7f97ab; }
.topbar svg { width: 14px; height: 14px; opacity: .85; }
.topbar-right { display: flex; align-items: center; gap: 14px; white-space: nowrap; }
.topbar .hl { color: #ffb08a; font-weight: 600; }
@media (max-width: 900px) { .topbar .tb-hide { display: none; } }

/* ---------- 页头 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(12,32,52,.03);
}
.site-header .wrap { display: flex; align-items: center; height: 78px; gap: 28px; }
.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo-mark {
  width: 44px; height: 44px; border-radius: 3px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--navy) 0%, var(--steel) 100%);
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 17px; letter-spacing: -.5px;
  position: relative; overflow: hidden;
}
.logo-mark::after {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(115deg, rgba(255,255,255,.16) 0 2px, transparent 2px 9px);
}
.logo-text b { display: block; font-size: 19px; letter-spacing: .4px; color: var(--navy); line-height: 1.15; }
.logo-text span { display: block; font-size: 10.5px; letter-spacing: 1.6px; color: var(--muted); text-transform: uppercase; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.nav > li { position: relative; }
.nav > li > a {
  display: block; padding: 10px 13px; font-size: 14.5px; font-weight: 600; color: #24384a;
  border-radius: 3px; white-space: nowrap;
}
.nav > li > a:hover, .nav > li.active > a { color: var(--accent); }
.nav > li.active > a::after {
  content: ""; display: block; height: 2px; background: var(--accent); margin-top: 4px; border-radius: 2px;
}
.nav .dropdown {
  position: absolute; top: 100%; left: 0; min-width: 268px; background: #fff;
  border: 1px solid var(--line); box-shadow: var(--shadow-lg); border-radius: 4px;
  padding: 8px; opacity: 0; visibility: hidden; transform: translateY(8px); transition: .18s ease;
}
.nav li:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.nav .dropdown a {
  display: block; padding: 9px 12px; font-size: 13.5px; color: #2c4256; border-radius: 3px;
  display: flex; justify-content: space-between; gap: 10px;
}
.nav .dropdown a:hover { background: #f2f6fa; color: var(--accent); }
.nav .dropdown a span { color: #9aabbb; font-size: 12px; }
.header-actions { display: flex; align-items: center; gap: 10px; }

/* 语言切换 */
.lang { position: relative; }
.lang-btn {
  display: flex; align-items: center; gap: 7px; background: #f2f5f8; border: 1px solid var(--line);
  padding: 8px 11px; border-radius: 3px; cursor: pointer; font-size: 13px; font-weight: 600; color: #33495c;
}
.lang-btn:hover { border-color: var(--line-d); background: #eef3f7; }
.lang-btn .globe { width: 15px; height: 15px; }
.lang-menu {
  position: absolute; right: 0; top: calc(100% + 8px); width: 190px; background: #fff;
  border: 1px solid var(--line); box-shadow: var(--shadow-lg); border-radius: 4px; padding: 6px;
  display: none; z-index: 90; max-height: 340px; overflow: auto;
}
.lang.open .lang-menu { display: block; }
.lang-menu a { display: flex; align-items: center; gap: 9px; padding: 8px 10px; font-size: 13.5px; border-radius: 3px; color: #2c4256; }
.lang-menu a:hover { background: #f2f6fa; }
.lang-menu a.on { background: #fff3ec; color: var(--accent-d); font-weight: 700; }
.lang-menu .code { color: #9aabbb; font-size: 11px; margin-left: auto; text-transform: uppercase; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px; border-radius: 3px; border: 1px solid transparent; cursor: pointer;
  font-weight: 700; font-size: 14px; transition: .16s ease; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-d); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(228,85,29,.28); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--navy-2); }
.btn-ghost { border-color: rgba(255,255,255,.4); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
/* 3D 工厂按钮（首屏） */
.btn-3d {
  border-color: rgba(255,255,255,.34); color: #fff;
  background: rgba(255,255,255,.07);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.btn-3d svg { width: 18px; height: 18px; flex: 0 0 auto; transition: transform .45s cubic-bezier(.2,.7,.3,1); }
.btn-3d:hover { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.62); transform: translateY(-1px); }
.btn-3d:hover svg { transform: rotate(-16deg) scale(1.1); }
.btn-outline { border-color: var(--line-d); color: #23384a; background: #fff; }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-block { width: 100%; }
.btn-lg { padding: 14px 26px; font-size: 15px; }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.mobile-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 3px; padding: 8px; cursor: pointer; }

@media (max-width: 1080px) {
  .nav { display: none; }
  .mobile-toggle { display: inline-flex; margin-left: auto; }
  .header-actions .btn-quote { display: none; }
}
@media (max-width: 560px) {
  .site-header .wrap { height: 66px; gap: 12px; }
  .logo-text b { font-size: 16px; }
  .logo-text span { display: none; }
}

/* 移动菜单 */
.mobile-menu { display: none; background: #fff; border-top: 1px solid var(--line); }
.mobile-menu.open { display: block; }
.mobile-menu ul { padding: 10px 0; }
.mobile-menu a { display: block; padding: 12px 20px; font-weight: 600; border-bottom: 1px solid #f0f4f8; }
.mobile-menu .sub a { padding-left: 36px; font-weight: 500; font-size: 14px; color: #4a5f72; }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative; display: block; min-height: 560px;
  background: #0a1c2e; color: #fff; overflow: visible;
}
.hero .wrap { position: relative; z-index: 2; }
.hero > .wrap:last-of-type { position: relative; z-index: 3; }
/* 首屏三图轮播 */
.hero-slides { position: absolute; inset: 0; overflow: hidden; background: #0a1c2e; }
.hero-slide {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: 58% 50%;
  opacity: 0; transition: opacity 1.15s ease;
  pointer-events: none;
}
.hero-slide.on { opacity: 1; }
.hero-slide:nth-child(1) { object-position: 50% 58%; }
.hero-slide:nth-child(2) { object-position: 60% 50%; }
.hero-slide:nth-child(3) { object-position: 62% 46%; }
.hero-shade {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(94deg, rgba(6,18,30,.96) 0%, rgba(7,22,37,.90) 30%, rgba(7,22,37,.62) 55%, rgba(8,26,44,.25) 82%, rgba(8,26,44,.10) 100%),
    linear-gradient(0deg, rgba(6,18,30,.62) 0%, rgba(6,18,30,0) 46%);
}
.hero-dots {
  position: absolute; left: 0; right: 0; bottom: 16px; z-index: 4;
  display: flex; gap: 10px; justify-content: center; align-items: center;
}
.hero-dot {
  width: 40px; height: 3px; padding: 0; border: 0; cursor: pointer;
  background: rgba(255,255,255,.28); position: relative; overflow: hidden;
  border-radius: 2px; transition: background .2s;
}
.hero-dot:hover { background: rgba(255,255,255,.5); }
.hero-dot i {
  position: absolute; inset: 0; background: #ffb08a;
  transform: scaleX(0); transform-origin: left center;
}
.hero-dot.on i { animation: heroBar 6s linear forwards; }
@keyframes heroBar { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.hero-inner { position: relative; z-index: 2; padding: 96px 0 120px; max-width: 700px; }
.hero .kicker {
  display: inline-flex; align-items: center; gap: 8px; font-size: 12px; letter-spacing: 2px;
  text-transform: uppercase; color: #ffb08a; font-weight: 700; margin-bottom: 18px;
  border: 1px solid rgba(255,176,138,.35); padding: 6px 12px; border-radius: 2px; background: rgba(228,85,29,.1);
}
.hero h1 { font-size: 46px; line-height: 1.12; letter-spacing: -.6px; margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: #ff9d6b; }
.hero p.lead { font-size: 16.5px; color: #c5d6e5; max-width: 620px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-foot { position: relative; z-index: 3; padding-bottom: 58px; }
.hero-facts {
  position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4, 1fr);
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14);
  backdrop-filter: blur(6px); margin: 34px 0 0; border-radius: 4px; overflow: hidden;
}
.hero-facts div { padding: 22px 24px; border-right: 1px solid rgba(255,255,255,.1); }
.hero-facts div:last-child { border-right: 0; }
.hero-facts b { display: block; font-size: 26px; color: #fff; letter-spacing: -.5px; }
.hero-facts span { font-size: 12.5px; color: #a9bdcd; }
@media (max-width: 900px) {
  .hero { min-height: 460px; }
  .hero h1 { font-size: 32px; }
  .hero-foot { padding-bottom: 52px; }
  .hero-cta { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .hero-cta .btn-3d { grid-column: 1 / -1; }
  .hero-facts { grid-template-columns: repeat(2, 1fr); }
  .hero-facts div:nth-child(2) { border-right: 0; }
  .hero-facts div:nth-child(1), .hero-facts div:nth-child(2) { border-bottom: 1px solid rgba(255,255,255,.1); }
  .hero-dots { bottom: 20px; }
}
@media (max-width: 560px) {
  .hero-dot { width: 28px; }
  .hero-cta { gap: 8px; }
  .btn-3d { padding: 12px 18px; }
  .hero-facts div { padding: 15px 12px; }
  .hero-facts b { font-size: 16px; letter-spacing: -.2px; white-space: nowrap; }
  .hero-facts span { font-size: 11px; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-slide { transition: none; }
  .hero-dot.on i { animation: none; transform: scaleX(1); }
}
.hero-spacer { height: 46px; background: var(--bg); }

/* ---------- 通用区块 ---------- */
.section { padding: 74px 0; }
.section.tight { padding: 54px 0; }
.section.grey { background: var(--bg); }
.section.white { background: #fff; }
.section.dark { background: var(--navy); color: #e6eef5; }
.section-head { margin-bottom: 38px; max-width: 720px; }
.section-head .eyebrow {
  font-size: 12px; font-weight: 800; letter-spacing: 2.2px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 10px; display: flex; align-items: center; gap: 9px;
}
.section-head .eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--accent); display: inline-block; }
.section-head h2 { font-size: 33px; letter-spacing: -.4px; }
.section-head p { color: var(--muted); margin-top: 12px; font-size: 15.5px; }
.section.dark .section-head p { color: #9db2c4; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }
.section-foot { text-align: center; margin-top: 40px; }

/* 分类卡片 */
.cat-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.cat-card {
  background: #fff; border: 1px solid var(--line); border-radius: 4px; overflow: hidden;
  display: flex; flex-direction: column; transition: .2s ease; position: relative;
}
.cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #cddbe8; }
.cat-card .thumb { aspect-ratio: 4/3; background: #e8eef4; overflow: hidden; }
.cat-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: .4s ease; }
.cat-card:hover .thumb img { transform: scale(1.05); }
.cat-card .body { padding: 18px 18px 20px; flex: 1; display: flex; flex-direction: column; }
.cat-card h3 { font-size: 16.5px; margin-bottom: 6px; }
.cat-card p { font-size: 13px; color: var(--muted); margin: 0 0 14px; flex: 1; }
.cat-card .more { font-size: 12.5px; font-weight: 800; color: var(--accent); display: flex; align-items: center; gap: 6px; }
@media (max-width: 1100px) { .cat-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 700px) { .cat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; } }
@media (max-width: 430px) { .cat-grid { grid-template-columns: 1fr; } }

/* 关于 */
.about-split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 54px; align-items: center; }
.about-split .visual { position: relative; }
.about-split .visual img { border-radius: 4px; box-shadow: var(--shadow-lg); }
.about-split .visual .badge-exp {
  position: absolute; right: -18px; bottom: -18px; background: var(--accent); color: #fff;
  padding: 18px 22px; border-radius: 4px; box-shadow: 0 10px 30px rgba(228,85,29,.3);
}
.about-split .visual .badge-exp b { display: block; font-size: 26px; line-height: 1; }
.about-split .visual .badge-exp span { font-size: 12px; opacity: .9; }
.about-split h2 { font-size: 32px; margin-bottom: 16px; }
.about-split p { color: #47607a; }
.about-points { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 22px; margin: 22px 0 26px; }
.about-points li { display: flex; gap: 9px; font-size: 14px; align-items: flex-start; color: #2b4356; }
.about-points li::before {
  content: "✓"; flex-shrink: 0; width: 18px; height: 18px; border-radius: 50%; background: #e8f4ee;
  color: var(--ok); font-size: 11px; font-weight: 800; display: grid; place-items: center; margin-top: 3px;
}
@media (max-width: 900px) { .about-split { grid-template-columns: 1fr; gap: 30px; } .about-points { grid-template-columns: 1fr; } }

/* 优势 */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.adv {
  padding: 28px 24px; background: #fff; border: 1px solid var(--line); border-radius: 4px;
  border-top: 3px solid var(--steel); transition: .2s ease;
}
.adv:hover { border-top-color: var(--accent); box-shadow: var(--shadow); }
.adv .ico { width: 44px; height: 44px; border-radius: 3px; background: #eef4f9; display: grid; place-items: center; margin-bottom: 16px; color: var(--steel); }
.adv .ico svg { width: 22px; height: 22px; }
.adv h3 { font-size: 16px; margin-bottom: 8px; }
.adv p { font-size: 13.5px; color: var(--muted); margin: 0; }
.section.dark .adv { background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.1); border-top-color: #4c7ba6; }
.section.dark .adv h3 { color: #fff; }
.section.dark .adv p { color: #a3b8c9; }
.section.dark .adv .ico { background: rgba(255,255,255,.07); color: #8fb4d4; }
@media (max-width: 1000px) { .adv-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .adv-grid { grid-template-columns: 1fr; } }

/* 应用领域 */
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.app-tile {
  position: relative; min-height: 190px; border-radius: 4px; overflow: hidden;
  display: flex; align-items: flex-end; padding: 22px; color: #fff; background: #16334d;
}
.app-tile img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .55; transition: .4s; }
.app-tile::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,20,34,.15), rgba(6,20,34,.85)); }
.app-tile:hover img { transform: scale(1.06); opacity: .65; }
.app-tile .t { position: relative; z-index: 2; }
.app-tile h3 { font-size: 17px; margin-bottom: 4px; }
.app-tile p { font-size: 12.5px; color: #b9cbda; margin: 0; }
@media (max-width: 860px) { .app-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .app-grid { grid-template-columns: 1fr; } }

/* 数字条 */
.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); background: #fff; border-radius: 4px; overflow: hidden; }
.stats-band div { padding: 26px 22px; text-align: center; border-right: 1px solid var(--line); }
.stats-band div:last-child { border-right: 0; }
.stats-band b { display: block; font-size: 30px; color: var(--navy); letter-spacing: -1px; }
.stats-band span { font-size: 12.5px; color: var(--muted); }
@media (max-width: 760px) { .stats-band { grid-template-columns: 1fr 1fr; } .stats-band div:nth-child(2) { border-right: 0; } .stats-band div:nth-child(1), .stats-band div:nth-child(2) { border-bottom: 1px solid var(--line); } }

/* 新闻卡 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card { background: #fff; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; display: flex; flex-direction: column; transition: .2s; }
.news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.news-card .thumb { aspect-ratio: 16/9; background: #e8eef4; overflow: hidden; }
.news-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-card .body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.news-card .meta { display: flex; align-items: center; gap: 10px; font-size: 12px; color: #8496a7; margin-bottom: 10px; }
.news-card .tag { background: #fff3ec; color: var(--accent-d); font-weight: 700; padding: 2px 8px; border-radius: 2px; font-size: 11px; }
.news-card h3 { font-size: 16px; margin-bottom: 8px; line-height: 1.4; }
.news-card p { font-size: 13px; color: var(--muted); margin: 0 0 14px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card .read { font-size: 12.5px; font-weight: 700; color: var(--blue); }
@media (max-width: 900px) { .news-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .news-grid { grid-template-columns: 1fr; } }

/* CTA 带 */
.cta-band { background: linear-gradient(100deg, var(--navy) 0%, #17405f 60%, #1d5477 100%); color: #fff; position: relative; overflow: hidden; }
.cta-band::after {
  content: ""; position: absolute; right: -80px; top: -60px; width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(228,85,29,.35), transparent 65%);
}
.cta-band .wrap { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 46px 20px; flex-wrap: wrap; }
.cta-band h2 { font-size: 27px; margin-bottom: 6px; }
.cta-band p { color: #b6c9d9; margin: 0; }

/* ---------- 页面头部（内页） ---------- */
.page-hero { background: var(--navy); color: #fff; position: relative; padding: 46px 0 42px; overflow: hidden; }
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    repeating-linear-gradient(115deg, rgba(255,255,255,.03) 0 1px, transparent 1px 18px),
    radial-gradient(900px 300px at 80% 0%, rgba(58,110,155,.45), transparent 70%);
}
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero h1 { font-size: 34px; margin-bottom: 8px; }
.page-hero p { color: #aec3d4; margin: 0; max-width: 760px; font-size: 14.5px; }
.crumb { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: #8fa8bc; margin-bottom: 12px; flex-wrap: wrap; }
.crumb a { color: #c3d4e2; }
.crumb a:hover { color: #fff; }
.crumb .sep { opacity: .5; }
@media (max-width: 700px) { .page-hero { padding: 30px 0; } .page-hero h1 { font-size: 25px; } }

/* ---------- 产品中心 ---------- */
.layout-side { display: grid; grid-template-columns: 268px 1fr; gap: 30px; align-items: start; }
.layout-side.right { grid-template-columns: minmax(0, 1fr) 300px; }
@media (max-width: 900px) { .layout-side.right { grid-template-columns: 1fr; } }
.side-card { background: #fff; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; margin-bottom: 18px; }
.side-card h3 { background: var(--navy); color: #fff; font-size: 14.5px; padding: 13px 18px; letter-spacing: .4px; }
.side-list a { display: flex; justify-content: space-between; gap: 10px; padding: 12px 18px; font-size: 13.8px; border-bottom: 1px solid #f0f4f8; color: #2b4154; }
.side-list a:last-child { border-bottom: 0; }
.side-list a:hover { background: #f6f9fc; color: var(--accent); }
.side-list a.on { background: #fff3ec; color: var(--accent-d); font-weight: 700; border-left: 3px solid var(--accent); padding-left: 15px; }
.side-list a span { color: #9fb0c0; font-size: 12px; }
.side-contact { background: linear-gradient(160deg, var(--navy), #1b4a6d); color: #fff; padding: 22px 18px; border-radius: 4px; }
.side-contact h4 { font-size: 15px; margin-bottom: 4px; }
.side-contact .role { font-size: 12px; color: #9fb8cc; margin-bottom: 14px; }
.side-contact a.tel { font-size: 19px; font-weight: 800; color: #ffb08a; display: block; margin-bottom: 6px; }
.side-contact .mail { font-size: 12.5px; color: #c2d4e2; word-break: break-all; }
.side-contact .btn { margin-top: 14px; }

.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 20px; flex-wrap: wrap; }
.toolbar .count { font-size: 13.5px; color: var(--muted); }
.search-box { display: flex; align-items: center; border: 1px solid var(--line-d); background: #fff; border-radius: 3px; overflow: hidden; }
.search-box input { border: 0; padding: 10px 12px; outline: none; width: 230px; font-size: 13.5px; }
.search-box button { border: 0; background: var(--navy); color: #fff; padding: 10px 14px; cursor: pointer; }
.search-box svg { width: 15px; height: 15px; display: block; }

.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.prod-card { background: #fff; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; transition: .2s; display: flex; flex-direction: column; }
.prod-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: #cfdce8; }
.prod-card .thumb { aspect-ratio: 4/3; background: #eef2f6; position: relative; overflow: hidden; }
.prod-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: .4s; }
.prod-card:hover .thumb img { transform: scale(1.04); }
.prod-card .cat-tag { position: absolute; left: 10px; top: 10px; background: rgba(10,28,46,.82); color: #fff; font-size: 11px; padding: 3px 8px; border-radius: 2px; letter-spacing: .3px; }
.prod-card .body { padding: 16px 16px 18px; flex: 1; display: flex; flex-direction: column; }
.prod-card h3 { font-size: 15.5px; margin-bottom: 6px; line-height: 1.4; }
.prod-card .model { font-size: 11.5px; color: #8fa3b5; font-family: ui-monospace, Menlo, Consolas, monospace; margin-bottom: 8px; }
.prod-card p { font-size: 12.8px; color: var(--muted); margin: 0 0 12px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.prod-card .foot { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid #f0f4f8; padding-top: 12px; }
.prod-card .foot .more { font-size: 12.5px; font-weight: 700; color: var(--blue); }
.prod-card .foot .inq { font-size: 12px; color: var(--accent); font-weight: 700; }
@media (max-width: 1100px) { .prod-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 900px) { .layout-side { grid-template-columns: 1fr; } .sidebar { order: 2; } }
@media (max-width: 560px) { .prod-grid { grid-template-columns: 1fr; } .search-box input { width: 150px; } }

/* ---------- 产品详情（商城式） ---------- */
.pd-wrap { background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 26px; }
.pd-top { display: grid; grid-template-columns: 460px 1fr; gap: 38px; }
.pd-gallery .main {
  border: 1px solid var(--line); border-radius: 4px; overflow: hidden; aspect-ratio: 4/3; background: #eef2f6; cursor: zoom-in;
}
.pd-gallery .main img { width: 100%; height: 100%; object-fit: cover; }
.pd-thumbs { display: flex; gap: 9px; margin-top: 10px; flex-wrap: wrap; }
.pd-thumbs .th { width: 76px; height: 58px; border: 1px solid var(--line); border-radius: 3px; overflow: hidden; cursor: pointer; background: #eef2f6; }
.pd-thumbs .th.on { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(228,85,29,.15); }
.pd-thumbs img { width: 100%; height: 100%; object-fit: cover; }

.pd-cat { font-size: 12.5px; color: var(--blue); font-weight: 700; letter-spacing: .6px; text-transform: uppercase; margin-bottom: 8px; }
.pd-title { font-size: 27px; line-height: 1.25; margin-bottom: 8px; letter-spacing: -.3px; }
.pd-sub { font-size: 14px; color: var(--muted); margin-bottom: 14px; }
.pd-highlights { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.pd-highlights span { background: #f1f5f9; color: #2f4a60; font-size: 12px; padding: 5px 10px; border-radius: 2px; border: 1px solid #e4ebf2; }

.pd-quote-box { background: linear-gradient(180deg, #fbfcfd, #f5f8fb); border: 1px solid var(--line); border-radius: 4px; padding: 18px 18px 16px; margin-bottom: 18px; }
.pd-quote-box .row { display: flex; align-items: baseline; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.pd-quote-box .lbl { font-size: 12.5px; color: var(--muted); width: 92px; flex-shrink: 0; }
.pd-quote-box .val { font-size: 13.5px; color: #22384a; font-weight: 600; }
.pd-quote-box .price { font-size: 26px; color: var(--accent); font-weight: 800; letter-spacing: -.5px; }
.pd-quote-box .unit { font-size: 13px; color: var(--muted); }
.pd-quote-box .note { font-size: 11.5px; color: #8b9dae; }

.pd-spec-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.pd-spec-table th, .pd-spec-table td { text-align: left; padding: 9px 12px; border: 1px solid var(--line); vertical-align: top; }
.pd-spec-table th { background: #f6f9fc; color: #4a6076; font-weight: 600; width: 150px; }
.pd-spec-table td { color: #1f3548; font-weight: 600; }

.pd-actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0 16px; }
.pd-service { display: flex; gap: 22px; flex-wrap: wrap; padding-top: 16px; border-top: 1px dashed var(--line-d); }
.pd-service div { display: flex; align-items: center; gap: 7px; font-size: 12.5px; color: #52697e; }
.pd-service svg { width: 15px; height: 15px; color: var(--ok); }

.pd-tabs { display: flex; gap: 2px; border-bottom: 2px solid var(--line); margin-top: 40px; overflow-x: auto; }
.pd-tabs button {
  background: none; border: 0; padding: 13px 22px; font-size: 14.5px; font-weight: 700; color: #5d7489;
  cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px; white-space: nowrap;
}
.pd-tabs button.on { color: var(--accent); border-bottom-color: var(--accent); }
.pd-panel { padding: 26px 2px; display: none; }
.pd-panel.on { display: block; }
.pd-panel h3 { font-size: 19px; margin-bottom: 12px; }
.pd-panel h4 { font-size: 15px; margin: 22px 0 8px; }
.pd-panel p { color: #3f5769; }
.pd-panel ul.dot { margin: 10px 0 16px; }
.pd-panel ul.dot li { position: relative; padding-left: 20px; margin-bottom: 8px; color: #3f5769; font-size: 14px; }
.pd-panel ul.dot li::before { content: ""; position: absolute; left: 4px; top: 9px; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }

.spec-full { width: 100%; border-collapse: collapse; font-size: 13.8px; }
.spec-full th, .spec-full td { border: 1px solid var(--line); padding: 11px 14px; text-align: left; }
.spec-full thead th { background: var(--navy); color: #fff; font-size: 13px; font-weight: 700; }
.spec-full tbody tr:nth-child(even) { background: #f8fafc; }
.spec-full td:first-child { width: 210px; color: #4a6076; font-weight: 600; background: #f6f9fc; }

.pd-catalog { border: 1px solid var(--line); border-radius: 4px; background: #fff; margin-top: 24px; overflow: hidden; }
.pd-catalog .hd { background: #f4f7fa; padding: 12px 16px; font-size: 13.5px; font-weight: 800; color: #2a4155; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; }
.pd-catalog .grp { border-bottom: 1px solid #f0f4f8; }
.pd-catalog .grp > a { display: flex; justify-content: space-between; padding: 10px 16px; font-size: 13px; font-weight: 700; color: #2b4256; background: #fbfcfd; }
.pd-catalog .grp > a:hover { color: var(--accent); }
.pd-catalog .grp ul { padding: 4px 0 8px; }
.pd-catalog .grp li a { display: block; padding: 6px 16px 6px 26px; font-size: 12.5px; color: #5c7387; }
.pd-catalog .grp li a:hover { color: var(--accent); background: #f7fafc; }
.pd-catalog .grp li a.on { color: var(--accent-d); font-weight: 700; background: #fff6f1; }

.pd-rel { margin-top: 40px; }
.pd-rel h2 { font-size: 21px; margin-bottom: 16px; }
@media (max-width: 1000px) {
  .pd-top { grid-template-columns: 1fr; gap: 22px; }
  .pd-gallery .main { max-width: 520px; }
  .pd-wrap { padding: 16px; }
  .pd-title { font-size: 22px; }
}
@media (max-width: 560px) {
  .pd-quote-box .lbl { width: 100%; }
  .pd-tabs button { padding: 11px 14px; font-size: 13px; }
}

/* ---------- 新闻中心 ---------- */
.news-tabs { display: flex; gap: 8px; margin-bottom: 26px; flex-wrap: wrap; }
.news-tabs a {
  padding: 9px 18px; border: 1px solid var(--line-d); border-radius: 3px; font-size: 13.5px;
  font-weight: 700; color: #40586c; background: #fff;
}
.news-tabs a:hover { border-color: var(--accent); color: var(--accent); }
.news-tabs a.on { background: var(--navy); border-color: var(--navy); color: #fff; }

.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item { display: grid; grid-template-columns: 232px 1fr; gap: 22px; background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 16px; transition: .2s; }
.news-item:hover { box-shadow: var(--shadow); border-color: #d5e1ec; }
.news-item .thumb { aspect-ratio: 16/10; border-radius: 3px; overflow: hidden; background: #eef2f6; }
.news-item .thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-item .meta { display: flex; gap: 12px; font-size: 12px; color: #8b9dae; margin-bottom: 7px; align-items: center; }
.news-item h2 { font-size: 18px; margin-bottom: 8px; line-height: 1.42; }
.news-item h2 a:hover { color: var(--accent); }
.news-item p { font-size: 13.5px; color: var(--muted); margin: 0 0 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-item .read { font-size: 12.5px; font-weight: 700; color: var(--blue); }
@media (max-width: 720px) { .news-item { grid-template-columns: 1fr; gap: 12px; } .news-item .thumb { aspect-ratio: 16/8; } }

.article { background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 34px 38px; }
.article h1 { font-size: 28px; line-height: 1.35; margin-bottom: 14px; }
.article .meta { display: flex; gap: 16px; font-size: 12.5px; color: #8b9dae; padding-bottom: 18px; border-bottom: 1px solid var(--line); margin-bottom: 24px; flex-wrap: wrap; }
.article .content { font-size: 15px; color: #2b4053; line-height: 1.9; }
.article .content h2, .article .content h3 { margin: 24px 0 10px; font-size: 19px; }
.article .content p { margin-bottom: 14px; }
.article .content ul { list-style: disc; padding-left: 22px; margin-bottom: 14px; }
.article .content li { margin-bottom: 6px; }
.article .content table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 13.5px; }
.article .content th, .article .content td { border: 1px solid var(--line); padding: 9px 12px; }
.article .content th { background: #f4f7fa; }
.article-nav { display: flex; justify-content: space-between; gap: 14px; margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 13.5px; flex-wrap: wrap; }
.article-nav a { color: #37536b; }
.article-nav a:hover { color: var(--accent); }
@media (max-width: 700px) { .article { padding: 20px; } .article h1 { font-size: 21px; } }

/* 分页 */
.pager { display: flex; gap: 6px; justify-content: center; margin-top: 30px; flex-wrap: wrap; }
.pager button, .pager a {
  min-width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--line-d);
  background: #fff; border-radius: 3px; font-size: 13.5px; color: #3b5468; cursor: pointer; padding: 0 10px;
}
.pager a:hover { border-color: var(--accent); color: var(--accent); }
.pager a.on { background: var(--navy); color: #fff; border-color: var(--navy); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: start; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 28px; }
.contact-card h2 { font-size: 22px; margin-bottom: 18px; }
.person { display: flex; gap: 16px; align-items: center; padding-bottom: 20px; border-bottom: 1px solid var(--line); margin-bottom: 20px; }
.person .av {
  width: 62px; height: 62px; border-radius: 50%; background: linear-gradient(135deg, var(--navy), var(--steel));
  color: #fff; display: grid; place-items: center; font-size: 22px; font-weight: 800; flex-shrink: 0;
}
.person b { display: block; font-size: 19px; }
.person span { font-size: 13px; color: var(--muted); }
.info-list li { display: flex; gap: 12px; padding: 11px 0; border-bottom: 1px dashed #eef2f6; font-size: 14px; align-items: flex-start; }
.info-list li:last-child { border-bottom: 0; }
.info-list .k { color: #8b9dae; width: 100px; flex-shrink: 0; font-size: 13px; }
.info-list .v { color: #22384a; font-weight: 600; word-break: break-word; }
.info-list a.v:hover { color: var(--accent); }
.qr-box { text-align: center; margin-top: 22px; padding: 18px; background: #f7fafc; border: 1px dashed var(--line-d); border-radius: 4px; }
.qr-box img { width: 168px; height: 168px; margin: 0 auto 10px; border: 6px solid #fff; box-shadow: var(--shadow); border-radius: 3px; }
.qr-box p { font-size: 12.5px; color: var(--muted); margin: 0; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 12.5px; font-weight: 700; color: #4a6176; margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%; border: 1px solid var(--line-d); border-radius: 3px; padding: 10px 12px;
  font-size: 14px; outline: none; background: #fff; color: var(--text);
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--steel-l); box-shadow: 0 0 0 3px rgba(63,107,147,.1); }
.field textarea { min-height: 118px; resize: vertical; }
.form-note { font-size: 12px; color: #8b9dae; margin-top: 10px; }
.form-ok { background: #eaf6f0; border: 1px solid #bfe3d2; color: #0d6b48; padding: 12px 14px; border-radius: 3px; font-size: 13.5px; margin-top: 12px; display: none; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } .form-grid { grid-template-columns: 1fr; } }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy); color: #9db2c4; padding: 58px 0 0; font-size: 13.5px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; padding-bottom: 42px; }
.site-footer h4 { color: #fff; font-size: 14.5px; margin-bottom: 16px; letter-spacing: .3px; }
.site-footer a { color: #9db2c4; }
.site-footer a:hover { color: #fff; }
.footer-about p { line-height: 1.8; margin-bottom: 14px; }
.footer-links li { margin-bottom: 9px; }
.footer-contact li { display: flex; gap: 9px; margin-bottom: 11px; align-items: flex-start; }
.footer-contact svg { width: 15px; height: 15px; margin-top: 4px; flex-shrink: 0; color: #6f90aa; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.09); padding: 18px 0; display: flex; justify-content: space-between; gap: 14px; font-size: 12.5px; color: #7d94a8; flex-wrap: wrap; }
.footer-bottom a { color: #9db2c4; }
.footer-badges { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.footer-badges span { border: 1px solid rgba(255,255,255,.16); padding: 4px 9px; border-radius: 2px; font-size: 11px; color: #b3c6d5; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 26px; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

/* 悬浮询盘 */
.float-inq { position: fixed; right: 18px; bottom: 22px; z-index: 80; display: flex; flex-direction: column; gap: 10px; }
.float-inq a {
  width: 50px; height: 50px; border-radius: 50%; display: grid; place-items: center; color: #fff;
  box-shadow: 0 8px 22px rgba(10,28,46,.24); transition: .18s;
}
.float-inq a:hover { transform: translateY(-3px); }
.float-inq .wa { background: #25d366; }
.float-inq .tel { background: var(--accent); }
.float-inq .top { background: var(--navy); opacity: .9; }
.float-inq svg { width: 24px; height: 24px; }

/* 空状态 */
.empty { text-align: center; padding: 60px 20px; color: #8b9dae; background: #fff; border: 1px dashed var(--line-d); border-radius: 4px; }

/* 加载 */
.loading { text-align: center; padding: 60px; color: #8b9dae; font-size: 14px; }

/* 工具 */
.text-c { text-align: center; }
.mt-0 { margin-top: 0 !important; }

/* 细节修正 */
.side-list a b { flex: 1; font-weight: inherit; line-height: 1.45; }
.side-list a span { flex-shrink: 0; color: #9fb0c0; font-size: 12px; }
.pd-catalog .grp > a span { margin-left: 8px; color: #9fb0c0; font-weight: 700; }
.pd-top { grid-template-columns: minmax(340px, 420px) minmax(0, 1fr); gap: 32px; }
.pd-spec-table th { width: 132px; font-size: 12.6px; line-height: 1.4; }
.pd-actions .btn { flex: 1 1 auto; min-width: 132px; }

/* 移动端防溢出 */
html, body { overflow-x: hidden; }
.hero-facts { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stats-band { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.prod-grid, .cat-grid, .news-grid, .adv-grid, .app-grid { min-width: 0; }
@media (max-width: 900px) {
  .hero-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-facts div { padding: 16px 14px; }
  .hero-facts b { font-size: 20px; }
  .hero-facts span { font-size: 11.5px; }
  .stats-band { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .topbar .topbar-right { display: none; }
  .topbar { font-size: 11.5px; }
  .topbar .wrap { height: 34px; }
  .hero h1 { font-size: 26px; }
  .hero-inner { padding: 56px 0 64px; }
  .hero p.lead { font-size: 14px; }
  .section { padding: 48px 0; }
  .section-head h2 { font-size: 25px; }
}

/* ---------- 企业介绍：厂区俯瞰图作背景 ---------- */
.about-band { position: relative; overflow: hidden; background: #0a1c2e; color: #fff; padding: 88px 0; }
.about-band-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.about-band-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(96deg, rgba(6,18,30,.95) 0%, rgba(7,22,37,.88) 34%, rgba(8,26,44,.55) 66%, rgba(8,26,44,.22) 100%);
}
.about-band-wrap {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  gap: 48px; align-items: end;
}
.about-band .eyebrow {
  font-size: 12px; font-weight: 800; letter-spacing: 2.2px; text-transform: uppercase;
  color: #ffb08a; margin-bottom: 12px; display: flex; align-items: center; gap: 9px;
}
.about-band .eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--accent); display: inline-block; }
.about-band h2 { font-size: 32px; color: #fff; margin-bottom: 16px; letter-spacing: -.4px; }
.about-band p { color: #c6d7e5; font-size: 15.5px; line-height: 1.85; margin-bottom: 20px; }
.about-band .about-points { margin: 0 0 26px; }
.about-band .about-points li { color: #dce9f3; }
.about-band .about-points li::before { background: rgba(255,255,255,.16); color: #7ee0b0; }
.about-band-stat {
  justify-self: end; text-align: right; padding: 0 22px 6px 0;
  border-right: 3px solid var(--accent);
}
.about-band-stat b { display: block; font-size: 66px; line-height: 1; color: #fff; letter-spacing: -2px; }
.about-band-stat span { font-size: 12.5px; color: #9fb6c8; letter-spacing: 1.2px; text-transform: uppercase; }
@media (max-width: 900px) {
  .about-band { padding: 60px 0; }
  .about-band-wrap { grid-template-columns: 1fr; gap: 26px; }
  .about-band-stat { justify-self: start; text-align: left; border-right: 0; border-left: 3px solid var(--accent); padding: 0 0 0 18px; }
  .about-band-stat b { font-size: 44px; }
  .about-band h2 { font-size: 26px; }
}

/* 产品详情正文段落 */
.pd-panel p { color: #3f566b; line-height: 1.85; margin-bottom: 14px; font-size: 14.5px; }
.pd-panel p.pd-intro { color: #6b8299; font-size: 13.5px; border-left: 3px solid #e3eaf1; padding-left: 12px; }
.pd-panel h4 { margin: 22px 0 10px; font-size: 15px; }