:root {
  --blue: #185fa5;
  --blue-dark: #0c447c;
  --ink: #23313f;
  --muted: #5a6b7d;
  --orange: #f5872e;
  --gold: #f2b71c;
  --navy: #2b2d5e;
  --bg: #ffffff;
  --bg-alt: #f2f6fa;
  --line: #d8e2ec;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft YaHei", Tahoma, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}
.wrap { max-width: 1500px; margin: 0 auto; padding: 0 24px; }
h1, h2, h3 { line-height: 1.3; margin: 0 0 12px; }
h2 { font-size: 36px; color: var(--blue-dark); text-align: center; letter-spacing: .3px; }
h2::after { content: ""; display: block; width: 56px; height: 4px; background: var(--orange); border-radius: 2px; margin: 12px auto 0; }
a { color: var(--blue); text-decoration: none; }
img { max-width: 100%; display: block; }

/* topbar —— hsfastener 式深色顶栏 */
.topbar { background: var(--navy); color: #fff; font-size: 16px; }
.topbar-in { display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 11px 20px; flex-wrap: wrap; }
.tb-left { display: flex; align-items: center; gap: 34px; flex-wrap: wrap; }
.topbar a { color: #f2f4fc; font-weight: 500; display: inline-flex; align-items: center; gap: 9px; }
.topbar a:hover { color: #fff; }
.tb-ico { width: 17px; height: 17px; fill: currentColor; flex: none; }

/* header —— 大字导航 */
.header { position: sticky; top: 0; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 2px 12px rgba(12,68,124,.07); z-index: 50; }
.header-in { display: flex; align-items: center; gap: 26px; padding: 14px 20px; }
.brand { font-weight: 800; font-size: 26px; color: var(--blue-dark); letter-spacing: 1.5px; }
.nav { display: flex; gap: 36px; margin-inline-start: auto; align-items: center; }
.nav a { color: var(--ink); font-weight: 600; font-size: 16.5px; text-transform: uppercase; letter-spacing: .3px; padding: 10px 2px; border-bottom: 2px solid transparent; white-space: nowrap; }
.nav a:hover { color: var(--blue); border-color: var(--orange); }
.nav a.on { color: var(--gold); border-color: var(--gold); }
#lang-select { font: inherit; font-size: 14px; padding: 6px 8px; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); }
.nav-toggle { display: none; font-size: 24px; background: none; border: 0; cursor: pointer; color: var(--blue-dark); }

/* 语言下拉（在深色顶栏内） */
.topbar .lang-btn { background: transparent; border: 1px solid rgba(255,255,255,.45); color: #fff; font-size: 15.5px; padding: 7px 15px; }
.topbar .lang-btn:hover { border-color: #fff; color: #fff; }
.topbar .lang-menu a { color: var(--ink); }
.topbar .lang-menu a:hover { color: var(--blue); background: var(--bg-alt); }
.topbar .lang-menu a.on { color: var(--blue-dark); }

/* hero */
.hero { padding: 46px 0 30px; background: linear-gradient(180deg, #eaf2f9 0%, #fff 100%); }
.hero h1 { font-size: 44px; max-width: 1200px; margin-inline: auto; text-align: center; color: var(--blue-dark); }
.hero-sub { max-width: 1100px; margin: 10px auto 22px; text-align: center; color: var(--muted); font-size: 17px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 26px; border-radius: 999px; font-weight: 700; font-size: 15px; }
.btn-primary { background: var(--orange); color: #fff; box-shadow: 0 6px 16px rgba(245, 135, 46, .35); }
.btn-primary:hover { background: #e0761f; }
.btn-ghost { border: 2px solid var(--blue); color: var(--blue); }
.btn-ghost:hover { background: var(--blue); color: #fff; }
.btn-big { font-size: 17px; padding: 14px 34px; }
.hero-banner { margin: 30px auto 0; border-radius: var(--radius); box-shadow: 0 10px 30px rgba(12, 68, 124, .18); }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 30px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); text-align: center; padding: 14px 8px; }
.stat b { display: block; font-size: 26px; color: var(--blue); }
.stat span { color: var(--muted); font-size: 13.5px; }

/* sections */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); }
.lead { max-width: 1160px; margin: 0 auto 26px; text-align: center; color: var(--muted); font-size: 16.5px; }
.note { color: var(--muted); font-size: 14px; text-align: center; margin-top: 22px; }

/* products */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.prod-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .15s, box-shadow .15s; }
.prod-card:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(12, 68, 124, .12); }
.prod-img { height: 170px; background: #fff; display: flex; align-items: center; justify-content: center; padding: 8px; border-bottom: 1px solid var(--line); }
.prod-img img { max-height: 100%; object-fit: contain; }
.prod-card h3 { font-size: 17px; color: var(--blue-dark); margin: 14px 16px 6px; }
.prod-card ul { margin: 0; padding: 0 16px 16px 34px; color: var(--muted); font-size: 14px; }
[dir="rtl"] .prod-card ul { padding: 0 34px 16px 16px; }
.prod-card li { margin: 3px 0; }

/* why */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.why-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.why-card h3 { font-size: 17px; color: var(--blue-dark); }
.why-card p { margin: 0; color: var(--muted); font-size: 15px; }
.quality { margin-top: 22px; background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%); color: #fff; border-radius: var(--radius); padding: 26px 28px; }
.quality h3 { color: #fff; }
.quality p { margin: 0; color: #dcebfa; }
.quality.global { background: linear-gradient(135deg, #f5872e 0%, #d96a12 100%); }
.quality.global p { color: #ffe9d6; }

/* contact */
.section-contact { background: var(--bg-alt); }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 26px 0; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; text-align: center; display: block; }
.contact-card:hover { border-color: var(--blue); }
.contact-card .k { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.contact-card .v { font-weight: 700; color: var(--blue-dark); font-size: 15.5px; word-break: break-all; }
.section-contact { text-align: center; }

/* about apps */
.sub-h { text-align: center; font-size: 19px; color: var(--blue-dark); margin: 30px 0 16px; }
.apps { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.chip { background: var(--bg-alt); border: 1px solid var(--line); color: var(--blue-dark); font-weight: 600; font-size: 14.5px; padding: 9px 22px; border-radius: 999px; }
.chip:hover { border-color: var(--blue); background: #eaf2f9; }

/* why cards numbering */
.why-card { position: relative; }
.why-card .num { display: inline-block; font-size: 26px; font-weight: 800; color: var(--orange); line-height: 1; margin-bottom: 8px; }
.certs { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.certs span { background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.4); color: #fff; font-weight: 700; font-size: 13.5px; padding: 5px 16px; border-radius: 999px; }

/* inquiry form */
.inq-form { max-width: 760px; margin: 8px auto 0; text-align: start; }
.inq-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 12px; }
.inq-form input, .inq-form textarea {
  width: 100%; font: inherit; font-size: 15px; color: var(--ink);
  padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; background: #fff;
}
.inq-form input:focus, .inq-form textarea:focus { outline: none; border-color: var(--blue); }
.inq-form textarea { resize: vertical; margin-bottom: 14px; }
.inq-btn { border: 0; cursor: pointer; }
.inq-btn[disabled] { opacity: .6; cursor: wait; }
.inq-msg { margin: 14px 0 0; padding: 12px 16px; border-radius: 10px; background: #e8f5ee; color: #0f6e56; font-size: 14.5px; }
.inq-msg.inq-err { background: #fdeeee; color: #b3392f; }

/* footer */
.footer { background: var(--blue-dark); color: #bcd4e8; padding: 20px 0; font-size: 14px; text-align: center; }

/* responsive */
@media (max-width: 900px) {
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 29px; }
}
@media (max-width: 640px) {
  .nav { display: none; position: absolute; top: 100%; inset-inline-end: 0; background: #fff; flex-direction: column; gap: 0; min-width: 200px; border: 1px solid var(--line); border-radius: 0 0 12px 12px; box-shadow: 0 10px 24px rgba(0,0,0,.1); padding: 8px 0; }
  .nav.open { display: flex; }
  .nav a { padding: 11px 20px; border-bottom: 0; }
  .nav-toggle { display: block; margin-inline-start: auto; }
  #lang-select { order: 3; }
  .prod-grid { grid-template-columns: 1fr; }
}

/* ============ 完整版多页站补充样式 ============ */
.brand span { white-space: nowrap; }

/* 导航下拉 */
.dd { position: relative; display: inline-block; }
.dd-t { display: inline-block; }
.dd-m {
  display: none; position: absolute; top: 100%; inset-inline-start: 0; min-width: 250px;
  background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 14px 34px rgba(12,68,124,.14);
  padding: 8px; z-index: 60;
}
.dd:hover .dd-m, .dd:focus-within .dd-m { display: grid; }
.dd-m a { display: block; padding: 8px 12px; border-radius: 8px; font-size: 14.5px; color: var(--ink); border-bottom: 0; }
.dd-m a:hover { background: var(--bg-alt); color: var(--blue); }
.nav { align-items: center; }

/* 语言切换 */
.lang-sw { display: flex; gap: 6px; flex-wrap: wrap; }
.lang-sw a { font-size: 13px; padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); }
.lang-sw a:hover { border-color: var(--blue); color: var(--blue); }
.lang-sw a.on { background: var(--blue); border-color: var(--blue); color: #fff; }

/* 面包屑 + 左对齐标题 */
.bc { color: var(--muted); font-size: 14px; margin: 0 0 14px; }
h2.left { text-align: start; }
h2.left::after { margin: 12px 0 0; }
p.lead.left, p.note.left { text-align: start; margin-inline: 0; }

/* 产品分类页 */
.cat-wrap { display: grid; grid-template-columns: 360px 1fr; gap: 26px; align-items: start; margin: 18px 0 10px; }
.cat-img { border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; background: #fff; }
.cat-img img { width: 100%; height: auto; }
.cat-info h3 { color: var(--blue-dark); }
.cat-items { color: var(--muted); font-size: 15.5px; padding-inline-start: 22px; margin: 8px 0 14px; }
.cat-items li { margin: 5px 0; }
.prod-card { display: block; color: inherit; }
.prod-more { margin: 0 16px 16px; color: var(--blue); font-size: 14px; font-weight: 600; }

/* 新闻列表 */
.news-item { border-top: 1px solid var(--line); padding: 22px 0; }
.news-item:first-of-type { border-top: 0; }
.news-item h3 { font-size: 20px; color: var(--blue-dark); }
p.body-text { color: var(--muted); font-size: 15.5px; margin: 0 0 8px; }

/* 页脚 */
.footer p { margin: 4px 0; }
.f-brand { font-weight: 700; color: #fff; }
.f-line a { color: #cfe3f5; }
.f-line a:hover { color: #fff; }

@media (max-width: 900px) {
  .cat-wrap { grid-template-columns: 1fr; }
  .dd-m { position: static; box-shadow: none; border: 0; padding: 0 0 0 12px; }
  .lang-sw { order: 4; width: 100%; justify-content: flex-end; }
}

/* ============ fixdex 风格版式 ============ */
.sec-kicker { display:block; text-align:center; font-size:12.5px; letter-spacing:2px; text-transform:uppercase; color:var(--orange); font-weight:700; margin-bottom:6px; }
.hero-fix { position:relative; padding:0; background:#0c447c; aspect-ratio:8/3; min-height:280px; max-height:800px; overflow:hidden; }
.hero-bg { position:absolute; inset:0; overflow:hidden; }
.hero-bg img { width:100%; height:100%; object-fit:cover; }
.hero-inner { position:relative; z-index:2; padding:142px 20px 122px; text-align:center; }
.hero-fix .hero-inner { display:none; }
.hero-fix h1 { color:#fff; font-size:44px; max-width:1200px; margin:6px auto 12px; }
.hero-fix .hero-sub { color:#d7e7f7; max-width:1100px; margin:0 auto 24px; font-size:17px; }
.hero-fix .kicker { color:var(--orange); font-weight:700; font-size:13px; letter-spacing:1.5px; text-transform:uppercase; }
.btn-ghost.light { border-color:rgba(255,255,255,.7); color:#fff; }
.btn-ghost.light:hover { background:#fff; color:var(--blue-dark); border-color:#fff; }
.stats-hero { margin-top:34px; }
.stats-hero .stat { background:rgba(255,255,255,.10); border:1px solid rgba(255,255,255,.22); }
.stats-hero .stat b { color:#fff; }
.stats-hero .stat span { color:#cfe3f5; }
.prod-grid-4 { grid-template-columns:repeat(4,1fr); }
.prod-grid-4 .prod-img { height:150px; }
.adv-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:22px; margin-top:26px; }
.adv { background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:22px 20px; }
.adv-ico { display:inline-flex; width:44px; height:44px; align-items:center; justify-content:center; border-radius:12px; background:#eaf2f9; color:var(--blue); margin-bottom:10px; }
.adv-ico svg { width:24px; height:24px; }
.adv h3 { font-size:16.5px; color:var(--blue-dark); }
.adv p { margin:0; color:var(--muted); font-size:14.5px; }
.about-split { display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:start; }
#about.section { padding: 88px 0; }
#about .about-text h2 { text-transform: uppercase; letter-spacing: 1.5px; }
.btn-more { display:inline-block; margin-top:20px; background:var(--blue); color:#fff; font-weight:700; font-size:14px; letter-spacing:2.5px; text-transform:uppercase; padding:13px 38px; border-radius:4px; transition:background .15s; }
.btn-more:hover { background:var(--blue-dark); color:#fff; }
.about-media video { width:100%; display:block; border-radius:var(--radius); }
.about-split .sec-kicker { text-align:start; }
.about-img img { border-radius:var(--radius); box-shadow:0 16px 38px rgba(12,68,124,.14); }
.sub-h.left { text-align:start; }
.apps.start { justify-content:flex-start; }
.certs-band { background:var(--blue-dark); padding:18px 0; }
.expo-viewport { overflow:hidden; margin-top:6px; }
.expo-track { display:flex; gap:20px; }
.expo-card { flex:0 0 calc(25% - 15px); }
.expo-card img { width:100%; aspect-ratio:4/3; object-fit:cover; border-radius:12px; border:1px solid var(--line); display:block; background:#fff; }
@media (max-width:900px){ .expo-card { flex-basis:calc(50% - 10px); } }
@media (max-width:640px){ .expo-card { flex-basis:100%; } }
.certs-in { display:flex; align-items:center; gap:12px; flex-wrap:wrap; justify-content:center; color:#cfe3f5; font-weight:700; font-size:14.5px; }
.certs-in span { border:1px solid rgba(255,255,255,.34); border-radius:999px; padding:5px 16px; }
.certs-in .certs-label { border:0; color:#fff; letter-spacing:1px; text-transform:uppercase; font-size:12.5px; }
.news-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:26px; }
.news-card { background:#fff; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; display:block; color:inherit; transition:transform .15s, box-shadow .15s; }
.news-card:hover { transform:translateY(-3px); box-shadow:0 12px 28px rgba(12,68,124,.12); }
.news-img { height:150px; overflow:hidden; background:#f2f6fa; }
.news-img img { width:100%; height:100%; object-fit:cover; }
.news-body { padding:16px; }
.news-date { color:var(--muted); font-size:13px; }
.news-body h3 { font-size:16.5px; color:var(--blue-dark); margin:6px 0 8px; }
.news-body p { margin:0 0 8px; color:var(--muted); font-size:14.5px; }
.footer-cols { text-align:start; padding:38px 0 0; }
.footer-cols .wrap { display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:26px; }
.fcol b { display:block; color:#fff; margin-bottom:10px; font-size:15px; }
.fcol span { display:block; color:#9fc0da; font-size:13.5px; }
.fcol p { color:#9fc0da; font-size:13.5px; }
.fcol a { display:block; color:#cfe3f5; font-size:14px; padding:3px 0; }
.fcol a:hover { color:#fff; }
.fbar { margin-top:26px; border-top:1px solid rgba(255,255,255,.14); padding:14px 0; font-size:13px; color:#9fc0da; }
@media (max-width:1100px){ .prod-grid-4{grid-template-columns:repeat(3,1fr);} .adv-grid{grid-template-columns:repeat(2,1fr);} .news-grid{grid-template-columns:repeat(2,1fr);} .footer-cols .wrap{grid-template-columns:1fr 1fr;} }
@media (max-width:900px){ .about-split{grid-template-columns:1fr;} .hero-fix h1{font-size:28px;} }
@media (max-width:640px){ .prod-grid-4{grid-template-columns:1fr;} .news-grid{grid-template-columns:1fr;} }

/* ============ Logo 品牌区 + 语言下拉 + Hero 轮播 ============ */
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-logo { height: 52px; width: auto; }
.brand-name { font-weight: 800; font-size: 27px; color: var(--blue-dark); letter-spacing: 1.5px; }

/* 语言下拉 */
.lang-dd { position: relative; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 8px; font: inherit; font-size: 14px; font-weight: 600;
  color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 999px;
  padding: 7px 14px; cursor: pointer;
}
.lang-btn:hover { border-color: var(--blue); color: var(--blue); }
.flag { width: 22px; height: 15px; border-radius: 2px; box-shadow: 0 0 0 1px rgba(0,0,0,.10); display: inline-block; vertical-align: middle; }
.caret { width: 0; height: 0; border-inline-start: 5px solid transparent; border-inline-end: 5px solid transparent; border-top: 6px solid currentColor; }
.lang-menu {
  display: none; position: absolute; top: calc(100% + 6px); inset-inline-end: 0; min-width: 190px;
  background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 14px 34px rgba(12,68,124,.16);
  padding: 8px; z-index: 80;
}
.lang-menu::before { content: ""; position: absolute; top: -6px; inset: auto 0 100% 0; height: 8px; }
.lang-dd.open .lang-menu { display: block; }
.lang-menu a { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 8px; color: var(--ink); font-size: 14.5px; }
.lang-menu a:hover { background: var(--bg-alt); color: var(--blue); }
.lang-menu a.on { background: #eaf2f9; color: var(--blue-dark); font-weight: 700; }

/* Hero 轮播 */
.hero-bg .hero-slide { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 1.2s ease; }
.hero-bg .hero-slide.on { opacity: 1; }
.hero-nav { position:absolute; top:50%; transform:translateY(-50%); z-index:3; width:46px; height:46px; border:none; border-radius:50%; background:rgba(0,0,0,.30); color:#fff; font-size:20px; line-height:1; cursor:pointer; display:flex; align-items:center; justify-content:center; padding:0 0 3px; transition:background .15s; }
.hero-nav:hover { background:rgba(0,0,0,.55); }
.hero-nav.prev { left:16px; }
.hero-nav.next { right:16px; }
@media (max-width:640px){ .hero-nav{ width:36px; height:36px; font-size:15px; } .hero-nav.prev{left:8px;} .hero-nav.next{right:8px;} }

@media (max-width: 900px) {
  .brand-logo { height: 38px; }
  .brand-name { font-size: 20px; }
  .topbar { font-size: 14.5px; }
  .topbar .lang-btn { font-size: 14.5px; }
  .nav a { font-size: 16px; }
}

/* ============ 浮动留言工具栏（随页面滚动） ============ */
.float-bar { position: fixed; inset-inline-end: 14px; top: 50%; transform: translateY(-50%); z-index: 90; display: flex; flex-direction: column; gap: 10px; }
.fb-item {
  width: 58px; min-height: 58px; border-radius: 14px; background: #fff; border: 1px solid var(--line);
  color: var(--blue-dark); display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px; cursor: pointer; box-shadow: 0 8px 20px rgba(12,68,124,.14); text-decoration: none; padding: 6px 4px;
}
.fb-item svg { width: 22px; height: 22px; }
.fb-txt { font-size: 10.5px; line-height: 1.1; text-align: center; color: var(--muted); font-weight: 600; }
.fb-item:hover { background: var(--blue); color: #fff; border-color: var(--blue); }
.fb-item:hover .fb-txt { color: #fff; }
.fb-item.js-open-msg { background: var(--orange); border-color: var(--orange); color: #fff; }
.fb-item.js-open-msg .fb-txt { color: #fff; }
.fb-item.js-open-msg:hover { background: #e0761f; }

/* 留言面板 */
.msg-panel {
  position: fixed; inset-inline-end: 86px; top: 50%; width: 370px; max-width: calc(100vw - 110px);
  background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 18px; z-index: 95;
  box-shadow: 0 22px 55px rgba(12,68,124,.26);
  opacity: 0; visibility: hidden; transform: translateY(-50%) translateX(18px); transition: opacity .25s, transform .25s, visibility .25s;
}
.msg-panel.open { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }
.msg-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.msg-head b { color: var(--blue-dark); font-size: 17.5px; }
.msg-close { border: 0; background: none; font-size: 26px; line-height: 1; color: var(--muted); cursor: pointer; padding: 0 4px; }
.msg-close:hover { color: var(--blue); }
.msg-panel .inq-form { max-width: none; }
.msg-panel .inq-row { grid-template-columns: 1fr; }
.msg-panel .inq-btn { width: 100%; }

/* ============ 小字放大（顶栏/导航已按 hsfastener 样式单独定大，不再覆盖） ============ */
.hero-fix .kicker { font-size: 14.5px; }
.news-date { font-size: 14px; }
.fcol a, .fcol span, .fcol p { font-size: 15px; }
.note { font-size: 15px; }
.bc { font-size: 15px; }
.fbar { font-size: 14px; }

@media (max-width: 900px) {
  .float-bar { inset-inline-end: 10px; top: auto; bottom: 14px; transform: none; flex-direction: row; }
  .fb-item { width: 50px; min-height: 50px; }
  .fb-txt { display: none; }
  .msg-panel { inset-inline-end: 10px; inset-inline-start: 10px; top: auto; bottom: 80px; width: auto; max-width: none; transform: translateY(14px); }
  .msg-panel.open { transform: translateY(0); }
}

/* ============ Company History 时间轴 ============ */
.hist-list { list-style: none; max-width: 980px; margin: 10px 0 0; padding: 0; }
.hist-list li { position: relative; padding: 0 0 22px 34px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.hist-list li::before { content: ""; position: absolute; inset-inline-start: 8px; top: 8px; width: 11px; height: 11px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 4px rgba(245,135,46,.18); }
.hist-list li::after { content: ""; position: absolute; inset-inline-start: 13px; top: 24px; bottom: -2px; width: 2px; background: var(--line); }
.hist-list li:last-child { padding-bottom: 4px; }
.hist-list li:last-child::after { display: none; }
.hist-list li:first-child { color: var(--ink); font-weight: 600; }

/* ============ 产品线大下拉（含三级明细） ============ */
.dd-m::before { content: ""; position: absolute; top: -12px; inset-inline-start: 0; width: 100%; height: 12px; }
.dd-m.dd-cols { z-index: 92; }
.dd-cols { min-width: 640px; grid-template-columns: repeat(3, 1fr); gap: 4px 26px; padding: 16px 18px; }
.dd-g { display: flex; flex-direction: column; }
.dd-m a.dd-cat, .nav a.dd-cat { font-size: 12.5px; font-weight: 800; letter-spacing: 1px; text-transform: uppercase; color: var(--blue-dark); padding: 7px 10px 5px; border-bottom: 2px solid var(--line); margin-bottom: 4px; }
.dd-m a.dd-cat:hover { color: var(--blue); background: transparent; }
.dd-m a.dd-i, .nav a.dd-i { font-size: 13px; font-weight: 500; color: var(--muted); padding: 4px 10px 4px 14px; border-radius: 6px; line-height: 1.4; text-transform: uppercase; letter-spacing: .2px; }
.dd-m a.dd-i:hover { color: var(--blue); background: var(--bg-alt); }
@media (max-width: 1100px) { .dd-cols { grid-template-columns: repeat(2, 1fr); min-width: 480px; } }
@media (max-width: 900px) { .dd-cols { grid-template-columns: 1fr; min-width: 0; } }

/* ============ Hero 文字轮播 ============ */
.hero-text { display: none; }
.hero-text.on { display: block; }

/* ============ 顶栏/导航行通栏加宽 ============ */
.topbar .wrap, .header .wrap { max-width: 1500px; margin: 0 auto; padding-left: 32px; padding-right: 32px; }

/* ============ About 区视频 ============ */
.about-media { border-radius: var(--radius); box-shadow: 0 16px 38px rgba(12,68,124,.14); overflow: hidden; background: #0c447c; }
.about-media video { width: 100%; display: block; }

/* ============ About 区视频 ============ */
.about-media { border-radius: var(--radius); box-shadow: 0 16px 38px rgba(12,68,124,.14); overflow: hidden; background: #0c447c; }
.about-media video { width: 100%; display: block; }

/* ============ 资质证书展示 ============ */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 8px; }
.cert-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; display: block; transition: transform .15s, box-shadow .15s; }
.cert-card:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(12,68,124,.14); }
.cert-card img { width: 100%; height: 330px; object-fit: contain; background: #fff; }
.cert-card span { display: block; text-align: center; margin-top: 10px; font-size: 14px; font-weight: 600; color: var(--blue-dark); }
@media (max-width: 900px) { .cert-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .cert-grid { grid-template-columns: 1fr; } }

/* ============ 加宽版移动端标题缩放 ============ */
@media (max-width: 900px) {
  h2 { font-size: 28px; }
  .hero h1 { font-size: 30px; }
  .hero-fix h1 { font-size: 30px; }
  .lead { font-size: 15.5px; }
}
@media (max-width: 640px) {
  h2 { font-size: 24px; }
  .wrap { padding: 0 16px; }
}

/* ============ 首页产品板块（fixdex 式面板） ============ */
.pl-panel { background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 30px 24px; margin-top: 34px; }
.pl-title { text-align:center; font-size:30px; letter-spacing:3px; text-transform:uppercase; color:var(--blue-dark); font-weight:800; margin:6px 0 34px; }
.pl-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.pl-item { background:#fff; border:1px solid var(--line); border-radius:12px; overflow:hidden; display:block; color:inherit; transition:transform .15s, box-shadow .15s; }
.pl-item:hover { transform:translateY(-3px); box-shadow:0 12px 28px rgba(12,68,124,.12); }
.pl-img { position:relative; display:block; height:auto; aspect-ratio:4/3; padding:0; background:#fff; border-bottom:1px solid var(--line); overflow:hidden; }
.pl-img img { width:100%; height:100%; object-fit:cover; }
.pl-badge { position:absolute; top:8px; z-index:2; display:inline-flex; align-items:center; gap:5px; color:var(--blue-dark); }
.pl-badge b { font-size:11px; font-weight:800; letter-spacing:1.4px; line-height:1.5; white-space:nowrap; -webkit-text-stroke:2.5px #fff; paint-order:stroke fill; text-shadow:0 0 4px rgba(255,255,255,.85); }
.pl-badge img { height:15px; width:15px; max-height:none; max-width:none; object-fit:contain; filter:drop-shadow(0 0 2px #fff) drop-shadow(0 0 3px rgba(255,255,255,.9)); }
.pl-badge.bl { left:8px; }
.pl-badge.br { right:8px; }
.pl-sep { width:1px; height:11px; background:currentColor; opacity:.35; }
@media (max-width:640px){ .pl-badge{gap:3px;} .pl-badge b{font-size:9px; letter-spacing:1px;} .pl-badge img{height:12px; width:12px;} .pl-sep{height:9px;} }
.pl-item b { display:block; text-align:center; padding:11px 10px 12px; font-size:13px; font-weight:700; letter-spacing:1.2px; text-transform:uppercase; color:var(--blue-dark); }
.pl-more { display:block; text-align:end; margin-top:18px; font-weight:800; font-size:14px; letter-spacing:2px; text-transform:uppercase; color:var(--blue); }
.pl-more:hover { color:var(--blue-dark); }
@media (max-width:1100px){ .pl-grid{grid-template-columns:repeat(3,1fr);} }
@media (max-width:900px){ .pl-grid{grid-template-columns:repeat(2,1fr);} .pl-panel{padding:26px 18px 18px;} }