/* =============================================================
   江苏恒盛炉业 · 蓝色科技风 H5 样式
   ============================================================= */
:root {
  --navy: #0a1c3d;
  --navy2: #0e2a5c;
  --blue: #1e6fff;
  --blue2: #2b8cff;
  --cyan: #00e0ff;
  --ink: #17263f;
  --gray: #66788f;
  --line: #e2ecfa;
  --bg: #f3f8ff;
  --card: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(20, 80, 180, .10);
  --shadow-h: 0 16px 40px rgba(20, 90, 200, .18);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; border: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.fr { float: right; }

/* ---------- 顶部工具条 ---------- */
.topbar { background: var(--navy); color: #9dc0ff; font-size: 12.5px; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; min-height: 36px; flex-wrap: wrap; gap: 6px; }
.topbar a { color: #9dc0ff; margin-left: 14px; transition: color .2s; }
.topbar a:hover { color: var(--cyan); }
.city-switch { position: relative; display: inline-block; }
.city-switch .city-btn { color: var(--cyan); cursor: pointer; }
.city-panel {
  display: none; position: absolute; left: 0; top: 26px; z-index: 99;
  background: #fff; color: var(--ink); width: 560px; max-width: 92vw;
  border-radius: 12px; box-shadow: var(--shadow-h); padding: 16px 18px;
}
.city-switch:hover .city-panel { display: block; }
.city-panel h4 { font-size: 13px; color: var(--gray); margin: 8px 0 6px; font-weight: 600; }
.city-panel .city-grid { display: flex; flex-wrap: wrap; gap: 6px 10px; }
.city-panel a { margin: 0; color: var(--ink); font-size: 13px; padding: 3px 10px; border-radius: 20px; background: var(--bg); }
.city-panel a:hover, .city-panel a.on { background: var(--blue); color: #fff; }

/* ---------- 头部 ---------- */
.header { background: #fff; box-shadow: 0 4px 18px rgba(20, 80, 180, .07); position: relative; z-index: 50; }
.header .container { display: flex; align-items: center; justify-content: space-between; min-height: 84px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo-mark {
  width: 52px; height: 52px; border-radius: 14px; flex: 0 0 auto;
  background: linear-gradient(135deg, var(--navy2), var(--blue) 60%, var(--cyan));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 22px; letter-spacing: 1px;
  box-shadow: 0 8px 20px rgba(30, 111, 255, .35);
}
.brand .logo-txt .name { font-size: 24px; font-weight: 800; letter-spacing: 2px;
  background: linear-gradient(90deg, var(--navy), var(--blue)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand .logo-txt .slogan { font-size: 12px; color: var(--gray); letter-spacing: .5px; }
.head-tel { text-align: right; }
.head-tel .num { font-size: 26px; font-weight: 800; color: var(--blue); letter-spacing: 1px; line-height: 1.2; }
.head-tel .num small { font-size: 13px; color: var(--gray); font-weight: 400; margin-right: 8px; }
.head-tel .tip { font-size: 12px; color: var(--gray); }

/* ---------- 导航 ---------- */
.navbar {
  background: linear-gradient(90deg, var(--navy) 0%, var(--navy2) 45%, var(--blue) 100%);
  position: sticky; top: 0; z-index: 60; box-shadow: 0 6px 18px rgba(10, 30, 80, .25);
}
.navbar .container { display: flex; align-items: stretch; }
.navbar ul { display: flex; flex: 1; }
.navbar li a {
  display: block; padding: 0 26px; line-height: 52px; color: #dceaff; font-size: 16px;
  letter-spacing: 1px; position: relative; transition: all .25s; white-space: nowrap;
}
.navbar li a:hover, .navbar li a.active { color: #fff; background: rgba(0, 224, 255, .14); }
.navbar li a.active::after {
  content: ""; position: absolute; left: 22px; right: 22px; bottom: 0; height: 3px;
  background: linear-gradient(90deg, var(--cyan), #7cf3ff); border-radius: 3px 3px 0 0;
}
.nav-toggle { display: none; background: none; border: 0; padding: 12px 16px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 3px; background: #fff; border-radius: 2px; margin: 5px 0; transition: .3s; }

/* ---------- 横幅 Hero ---------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(900px 380px at 85% -10%, rgba(0, 224, 255, .28), transparent 60%),
    radial-gradient(700px 340px at 8% 110%, rgba(30, 111, 255, .35), transparent 60%),
    linear-gradient(120deg, var(--navy) 0%, var(--navy2) 55%, #12408f 100%);
  padding: 72px 0 64px;
}
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image:
    linear-gradient(rgba(120, 180, 255, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 180, 255, .12) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(1200px 500px at 50% 30%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(1200px 500px at 50% 30%, #000 30%, transparent 80%);
}
.hero .container { position: relative; z-index: 2; }
.hero .kicker {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px; border-radius: 30px;
  background: rgba(0, 224, 255, .14); border: 1px solid rgba(0, 224, 255, .4);
  color: var(--cyan); font-size: 13px; letter-spacing: 2px;
}
.hero h1 { font-size: 42px; line-height: 1.35; margin: 18px 0 12px; font-weight: 800; letter-spacing: 2px; }
.hero h1 em { font-style: normal; color: var(--cyan); }
.hero .sub { font-size: 17px; color: #c9dcff; max-width: 680px; }
.hero .hero-btns { margin-top: 30px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 32px; border-radius: 40px; font-size: 15.5px; font-weight: 600;
  letter-spacing: 1px; transition: all .25s; cursor: pointer; border: 0;
}
.btn-primary { background: linear-gradient(135deg, var(--blue), var(--cyan)); color: #fff; box-shadow: 0 12px 28px rgba(0, 140, 255, .38); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 36px rgba(0, 140, 255, .5); }
.btn-ghost { background: rgba(255, 255, 255, .1); color: #fff; border: 1px solid rgba(255, 255, 255, .35); }
.btn-ghost:hover { background: rgba(255, 255, 255, .22); transform: translateY(-3px); }
.hero .hot-tags { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 10px; }
.hero .hot-tags a {
  padding: 7px 18px; border-radius: 30px; font-size: 13.5px; color: #cfe4ff;
  border: 1px solid rgba(120, 180, 255, .35); background: rgba(120, 180, 255, .12); transition: all .25s;
}
.hero .hot-tags a:hover { color: var(--navy); background: var(--cyan); border-color: var(--cyan); }
.hero-stats { margin-top: 46px; display: flex; gap: 44px; flex-wrap: wrap; }
.hero-stats .st b { display: block; font-size: 34px; color: var(--cyan); line-height: 1.1; }
.hero-stats .st span { font-size: 13px; color: #a9c4ee; letter-spacing: 1px; }

/* ---------- 通用 Section ---------- */
.section { padding: 64px 0; }
.section.white { background: #fff; }
.sec-head { text-align: center; margin-bottom: 44px; }
.sec-head .en { font-size: 13px; letter-spacing: 5px; color: var(--blue); text-transform: uppercase; opacity: .75; }
.sec-head h2 { font-size: 32px; margin: 8px 0 12px; letter-spacing: 2px; font-weight: 800; }
.sec-head .line { width: 64px; height: 4px; margin: 0 auto; border-radius: 4px;
  background: linear-gradient(90deg, var(--blue), var(--cyan)); }
.sec-head p { margin-top: 14px; color: var(--gray); font-size: 15px; }

/* ---------- 产品卡片 ---------- */
.p-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.p-card {
  background: var(--card); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: all .3s; border: 1px solid rgba(30, 111, 255, .08);
  display: flex; flex-direction: column;
}
.p-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-h); border-color: rgba(0, 224, 255, .5); }
.p-card .thumb { position: relative; aspect-ratio: 4/3; overflow: hidden; background: #eef4ff; }
.p-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.p-card:hover .thumb img { transform: scale(1.08); }
.p-card .thumb .tag {
  position: absolute; left: 12px; top: 12px; padding: 4px 12px; border-radius: 20px;
  background: linear-gradient(135deg, var(--blue), var(--cyan)); color: #fff; font-size: 12px;
}
.p-card .body { padding: 18px 18px 20px; flex: 1; display: flex; flex-direction: column; }
.p-card h3 { font-size: 17px; margin-bottom: 8px; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.p-card:hover h3 { color: var(--blue); }
.p-card p { font-size: 13px; color: var(--gray); flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.p-card .more { margin-top: 12px; font-size: 13px; color: var(--blue); font-weight: 600; }

/* ---------- 分类宫格 ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.cat-cell {
  background: #fff; border-radius: 12px; padding: 22px 12px; text-align: center;
  border: 1px solid var(--line); transition: all .3s; position: relative; overflow: hidden;
}
.cat-cell::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--cyan)); transform: scaleX(0); transition: .3s;
}
.cat-cell:hover { transform: translateY(-6px); box-shadow: var(--shadow-h); border-color: var(--blue); }
.cat-cell:hover::after { transform: scaleX(1); }
.cat-cell .ic {
  width: 52px; height: 52px; margin: 0 auto 10px; border-radius: 14px;
  background: linear-gradient(135deg, #e8f1ff, #d5e8ff);
  display: flex; align-items: center; justify-content: center; color: var(--blue); font-size: 22px; font-weight: 700;
}
.cat-cell:hover .ic { background: linear-gradient(135deg, var(--blue), var(--cyan)); color: #fff; }
.cat-cell b { font-size: 15px; font-weight: 600; }

/* ---------- 优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.adv-card {
  background: linear-gradient(150deg, var(--navy) 0%, var(--navy2) 70%, #14418f 100%);
  color: #fff; border-radius: var(--radius); padding: 34px 26px; position: relative; overflow: hidden;
}
.adv-card::before {
  content: ""; position: absolute; right: -40px; top: -40px; width: 140px; height: 140px;
  border-radius: 50%; background: rgba(0, 224, 255, .16); transition: .4s;
}
.adv-card:hover::before { transform: scale(1.5); }
.adv-card .ic {
  width: 56px; height: 56px; border-radius: 16px; margin-bottom: 18px;
  background: rgba(0, 224, 255, .16); border: 1px solid rgba(0, 224, 255, .4);
  display: flex; align-items: center; justify-content: center; font-size: 24px;
}
.adv-card h3 { font-size: 19px; margin-bottom: 8px; letter-spacing: 1px; }
.adv-card p { font-size: 13.5px; color: #b9d1f7; }

/* ---------- 新闻 ---------- */
.news-wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 24px; }
.news-col { background: #fff; border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.news-col h3 {
  font-size: 18px; margin-bottom: 18px; padding-left: 14px; position: relative; letter-spacing: 1px;
}
.news-col h3::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 4px;
  border-radius: 4px; background: linear-gradient(180deg, var(--blue), var(--cyan)); }
.news-feature { display: block; margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px dashed var(--line); }
.news-feature .date { font-size: 12px; color: var(--blue); letter-spacing: 1px; }
.news-feature b { display: block; font-size: 16.5px; line-height: 1.6; margin: 6px 0; }
.news-feature:hover b { color: var(--blue); }
.news-feature p { font-size: 13px; color: var(--gray);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-list li { display: flex; gap: 12px; align-items: baseline; padding: 8px 0; border-bottom: 1px dashed #eef3fb; }
.news-list li:last-child { border-bottom: 0; }
.news-list .date { flex: 0 0 auto; font-size: 12.5px; color: var(--gray); font-variant-numeric: tabular-nums; }
.news-list a { font-size: 14.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; transition: color .2s; }
.news-list a:hover { color: var(--blue); }
.news-more { display: inline-block; margin-top: 12px; font-size: 13px; color: var(--blue); }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.case-card { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/3; background: var(--navy); }
.case-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s, opacity .3s; opacity: .92; }
.case-card:hover img { transform: scale(1.1); opacity: .6; }
.case-card .cap {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 30px 16px 14px; color: #fff;
  background: linear-gradient(transparent, rgba(6, 20, 48, .88)); font-size: 14.5px;
}
.case-card:hover .cap b { color: var(--cyan); }

/* ---------- 内容页布局 ---------- */
.page-banner {
  background:
    radial-gradient(700px 260px at 90% -30%, rgba(0, 224, 255, .25), transparent 60%),
    linear-gradient(115deg, var(--navy), var(--navy2) 60%, #123c86);
  color: #fff; padding: 46px 0 40px; position: relative; overflow: hidden;
}
.page-banner::before {
  content: ""; position: absolute; inset: 0; opacity: .45;
  background-image: linear-gradient(rgba(120, 180, 255, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 180, 255, .12) 1px, transparent 1px);
  background-size: 42px 42px;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { font-size: 30px; letter-spacing: 2px; }
.page-banner .sub { color: #b6cdf5; font-size: 14px; margin-top: 6px; }
.crumb { margin-top: 14px; font-size: 13px; color: #9fc0f2; }
.crumb a { color: #cfe1ff; }
.crumb a:hover { color: var(--cyan); }

.layout { display: grid; grid-template-columns: 1fr 300px; gap: 26px; align-items: start; }
.panel { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px; }
.panel + .panel { margin-top: 22px; }

.side-box { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.side-box h3 {
  background: linear-gradient(90deg, var(--navy2), var(--blue)); color: #fff;
  font-size: 16px; padding: 15px 20px; letter-spacing: 1px;
}
.side-box .bd { padding: 18px 20px; }
.side-menu li a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 11px 12px; border-radius: 10px; font-size: 14.5px; transition: all .25s;
  border: 1px solid transparent; margin-bottom: 6px;
}
.side-menu li a:hover, .side-menu li a.on {
  background: linear-gradient(90deg, rgba(30, 111, 255, .1), rgba(0, 224, 255, .12));
  color: var(--blue); border-color: rgba(30, 111, 255, .25); font-weight: 600;
}
.side-menu li a .ar { color: var(--blue); font-size: 12px; }
.side-contact .tel { font-size: 24px; font-weight: 800; color: var(--blue); letter-spacing: 1px; }
.side-contact .row { font-size: 13.5px; color: var(--gray); padding: 5px 0; }
.side-news li { padding: 9px 0; border-bottom: 1px dashed #eef3fb; }
.side-news li:last-child { border-bottom: 0; }
.side-news a { font-size: 14px; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-news a:hover { color: var(--blue); }
.side-news .date { font-size: 12px; color: var(--gray); }

/* ---------- 产品详情 ---------- */
.prod-top { display: grid; grid-template-columns: 420px 1fr; gap: 32px; }
.prod-gallery .main-img {
  border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: #fff;
}
.prod-gallery .main-img img { width: 100%; display: block; }
.prod-gallery .thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.prod-gallery .thumbs img {
  width: 78px; height: 60px; object-fit: cover; border-radius: 8px; cursor: pointer;
  border: 2px solid transparent; transition: .2s; background: #fff;
}
.prod-gallery .thumbs img:hover, .prod-gallery .thumbs img.on { border-color: var(--blue); }
.prod-info h1 { font-size: 26px; line-height: 1.5; letter-spacing: 1px; }
.prod-info .alias { color: var(--gray); font-size: 14px; margin: 6px 0 14px; }
.prod-info .note {
  background: linear-gradient(90deg, rgba(30, 111, 255, .08), rgba(0, 224, 255, .12));
  border-left: 4px solid var(--blue); border-radius: 8px; padding: 12px 16px;
  color: var(--blue); font-size: 14.5px; margin: 16px 0;
}
.prod-meta { margin: 18px 0; border-top: 1px dashed var(--line); }
.prod-meta .r { display: flex; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }
.prod-meta .r b { flex: 0 0 90px; color: var(--gray); font-weight: 400; }
.prod-body { margin-top: 26px; line-height: 1.95; font-size: 15.5px; }
.prod-body img { display: block; margin: 14px auto; border-radius: 10px; }
.prod-body p { margin: 10px 0; }

/* ---------- 文章 ---------- */
.article h1 { font-size: 28px; line-height: 1.5; letter-spacing: 1px; }
.article .meta { color: var(--gray); font-size: 13px; margin: 12px 0 20px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.article .meta span { margin-right: 18px; }
.article .content { font-size: 15.5px; line-height: 2; }
.article .content p { margin: 12px 0; }
.article .content img { display: block; margin: 14px auto; border-radius: 10px; }
.article .content h2, .article .content h3 { margin: 18px 0 10px; }
.prevnext {
  display: flex; justify-content: space-between; gap: 16px; margin-top: 28px;
  padding-top: 18px; border-top: 1px solid var(--line); font-size: 14px; flex-wrap: wrap;
}
.prevnext a { color: var(--blue); }

/* ---------- 新闻列表 ---------- */
.n-list .item {
  display: flex; gap: 18px; align-items: center; padding: 18px 6px;
  border-bottom: 1px solid var(--line); transition: .25s;
}
.n-list .item:hover { background: linear-gradient(90deg, rgba(30, 111, 255, .05), transparent); padding-left: 14px; }
.n-list .item .date-box {
  flex: 0 0 72px; text-align: center; border-radius: 10px; overflow: hidden;
  border: 1px solid var(--line); background: var(--bg);
}
.n-list .item .date-box b { display: block; background: var(--blue); color: #fff; font-size: 12px; padding: 3px 0; }
.n-list .item .date-box span { display: block; font-size: 22px; font-weight: 700; color: var(--navy); padding: 4px 0 6px; }
.n-list .item h3 { font-size: 17px; margin-bottom: 6px; transition: color .2s; }
.n-list .item:hover h3 { color: var(--blue); }
.n-list .item p { font-size: 13.5px; color: var(--gray);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- 分页 ---------- */
.pagination { display: flex; justify-content: center; gap: 8px; margin: 36px 0 6px; flex-wrap: wrap; }
.pagination .page-item {
  min-width: 38px; height: 38px; padding: 0 14px; border-radius: 10px; border: 1px solid var(--line);
  display: inline-flex; align-items: center; justify-content: center; font-size: 14px;
  background: #fff; transition: .25s; color: var(--ink);
}
.pagination .page-item:hover { border-color: var(--blue); color: var(--blue); }
.pagination .page-item.active { background: linear-gradient(135deg, var(--blue), var(--cyan)); color: #fff; border-color: transparent; }
.pagination .page-item.disabled { opacity: .45; pointer-events: none; }
.pagination .page-omit { align-self: center; color: var(--gray); }

/* ---------- 城市分站 ---------- */
.city-bar {
  background: linear-gradient(90deg, rgba(30, 111, 255, .08), rgba(0, 224, 255, .12));
  border: 1px solid rgba(30, 111, 255, .18); border-radius: var(--radius); padding: 24px 26px;
}
.city-bar h3 { font-size: 18px; margin-bottom: 12px; letter-spacing: 1px; }
.city-bar h3 small { color: var(--gray); font-size: 12px; letter-spacing: 3px; margin-left: 10px; }
.city-links { display: flex; flex-wrap: wrap; gap: 10px; }
.city-links a {
  padding: 7px 18px; background: #fff; border-radius: 30px; font-size: 13.5px;
  border: 1px solid var(--line); transition: .25s;
}
.city-links a:hover, .city-links a.on {
  background: linear-gradient(135deg, var(--blue), var(--cyan)); color: #fff; border-color: transparent;
  transform: translateY(-2px); box-shadow: 0 8px 18px rgba(30, 111, 255, .3);
}
.city-intro { font-size: 14.5px; color: var(--gray); line-height: 2; margin: 14px 0; }
.city-hero .badge {
  display: inline-block; padding: 6px 18px; border-radius: 30px; font-size: 13px;
  background: rgba(0, 224, 255, .16); color: var(--cyan); border: 1px solid rgba(0, 224, 255, .4); letter-spacing: 2px;
}

/* ---------- CTA / 联系 ---------- */
.cta {
  border-radius: 20px; padding: 48px 42px; color: #fff; position: relative; overflow: hidden;
  background:
    radial-gradient(600px 260px at 90% 0%, rgba(0, 224, 255, .3), transparent 60%),
    linear-gradient(115deg, var(--navy), var(--blue) 90%);
}
.cta h2 { font-size: 30px; letter-spacing: 2px; margin-bottom: 10px; }
.cta p { color: #cfe1ff; font-size: 15px; max-width: 640px; }
.cta .tel-big { font-size: 40px; font-weight: 800; color: var(--cyan); letter-spacing: 2px; margin: 18px 0; }
.cta .btn-white { background: #fff; color: var(--blue); }
.cta .btn-white:hover { transform: translateY(-3px); box-shadow: 0 16px 32px rgba(0, 0, 0, .25); }

/* ---------- 页脚 ---------- */
.footer { background: var(--navy); color: #8fb1e6; margin-top: 0; }
.footer .top { padding: 56px 0 36px; }
.footer .cols { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 30px; }
.footer h4 { color: #fff; font-size: 16px; letter-spacing: 1px; margin-bottom: 18px; }
.footer li { padding: 5px 0; font-size: 13.5px; }
.footer a:hover { color: var(--cyan); }
.footer .brand-foot .name { color: #fff; font-size: 20px; letter-spacing: 2px; font-weight: 700; }
.footer .brand-foot p { font-size: 13px; margin: 12px 0; line-height: 2; }
.footer .qr img { width: 118px; height: 118px; border-radius: 10px; background: #fff; padding: 5px; }
.footer .bottom {
  border-top: 1px solid rgba(143, 177, 230, .18); padding: 18px 0; font-size: 12.5px;
  display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap;
}
.friend-links { padding: 14px 0; border-top: 1px solid rgba(143, 177, 230, .18); font-size: 12.5px; }
.friend-links a { margin-right: 18px; }

/* ---------- 杂项 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.on { opacity: 1; transform: none; }
.text-center { text-align: center; }
.mt20 { margin-top: 20px; } .mt30 { margin-top: 30px; } .mb20 { margin-bottom: 20px; }
.empty { text-align: center; color: var(--gray); padding: 50px 0; }
.back-top {
  position: fixed; right: 20px; bottom: 28px; width: 46px; height: 46px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--cyan)); color: #fff;
  display: none; align-items: center; justify-content: center; font-size: 20px;
  box-shadow: 0 10px 24px rgba(30, 111, 255, .4); cursor: pointer; z-index: 80;
}

/* ---------- 响应式 H5 ---------- */
@media (max-width: 1080px) {
  .p-grid { grid-template-columns: repeat(3, 1fr); }
  .cat-grid { grid-template-columns: repeat(4, 1fr); }
  .news-wrap { grid-template-columns: 1fr 1fr; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .prod-top { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 32px; }
}
@media (max-width: 720px) {
  .topbar .hide-m { display: none; }
  .header .container { min-height: 68px; }
  .brand .logo-mark { width: 42px; height: 42px; font-size: 18px; border-radius: 11px; }
  .brand .logo-txt .name { font-size: 19px; letter-spacing: 1px; }
  .brand .logo-txt .slogan { display: none; }
  .head-tel .num { font-size: 19px; }
  .head-tel .tip { display: none; }
  .nav-toggle { display: block; }
  .navbar ul {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; background: var(--navy2); box-shadow: 0 18px 30px rgba(0, 0, 0, .3);
  }
  .navbar.open ul { display: flex; }
  .navbar li a { line-height: 48px; padding: 0 22px; border-top: 1px solid rgba(255, 255, 255, .08); }
  .hero { padding: 46px 0 42px; }
  .hero h1 { font-size: 25px; letter-spacing: 1px; }
  .hero .sub { font-size: 14.5px; }
  .hero .btn { padding: 11px 22px; font-size: 14px; }
  .hero-stats { gap: 26px; margin-top: 32px; }
  .hero-stats .st b { font-size: 25px; }
  .section { padding: 42px 0; }
  .sec-head h2 { font-size: 25px; }
  .p-grid { grid-template-columns: repeat(2, 1fr); gap: 13px; }
  .p-card .body { padding: 13px; }
  .p-card h3 { font-size: 15px; }
  .cat-grid { grid-template-columns: repeat(3, 1fr); gap: 11px; }
  .cat-cell { padding: 16px 8px; }
  .cat-cell .ic { width: 44px; height: 44px; font-size: 18px; }
  .cat-cell b { font-size: 13.5px; }
  .news-wrap { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .page-banner { padding: 32px 0 26px; }
  .page-banner h1 { font-size: 23px; }
  .panel { padding: 20px 16px; }
  .article h1 { font-size: 22px; }
  .prod-info h1 { font-size: 21px; }
  .cta { padding: 34px 22px; }
  .cta h2 { font-size: 23px; }
  .cta .tel-big { font-size: 28px; }
  .footer .cols { grid-template-columns: 1fr; gap: 22px; }
  .footer .top { padding: 38px 0 22px; }
  .pagination .page-item { min-width: 34px; height: 34px; padding: 0 10px; font-size: 13px; }
}