/* ==========================================================================
   恒越智能包装设备 · 全局样式
   配色体系：工业深蓝 / 明亮蓝 / 青色点缀
   ========================================================================== */

:root {
  --navy-950: #071830;
  --navy-900: #0A1F3D;
  --navy-800: #0E2A52;
  --navy-700: #123563;
  --brand-700: #1245A8;
  --brand-600: #1556C8;
  --brand-500: #1E6FE8;
  --brand-400: #2E8BFF;
  --cyan-500: #19B7E6;
  --amber-500: #F5A623;
  --ink-900: #14213B;
  --ink-700: #33415C;
  --ink-500: #6B7A99;
  --bg-soft: #F2F6FC;
  --line: #E3E9F4;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 10px rgba(20, 33, 59, .06);
  --shadow-md: 0 12px 32px rgba(20, 33, 59, .12);
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-700);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-dark { background: var(--navy-900); color: #EAF1FC; }

/* ===== 通用组件 ===== */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 14px; font-weight: 500; letter-spacing: .14em;
  color: var(--brand-500); text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--brand-400); }
.section-head { margin-bottom: 48px; }
.section-head.center { text-align: center; }
.section-head.center .eyebrow { justify-content: center; }
.section-title {
  font-size: 34px; line-height: 1.3; font-weight: 700; color: var(--ink-900);
  margin-top: 12px; letter-spacing: .01em;
}
.section-sub { margin-top: 12px; color: var(--ink-500); max-width: 720px; }
.section-head.center .section-sub { margin-left: auto; margin-right: auto; }
.section-dark .section-title { color: #fff; }
.section-dark .section-sub { color: #A9BFE3; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: 10px; font-size: 15px; font-weight: 500;
  transition: all .25s ease; white-space: nowrap;
}
.btn-primary { background: var(--brand-500); color: #fff; box-shadow: 0 8px 20px rgba(30, 111, 232, .28); }
.btn-primary:hover { background: var(--brand-600); transform: translateY(-2px); box-shadow: 0 12px 26px rgba(30, 111, 232, .36); }
.btn-ghost { border: 1px solid rgba(255, 255, 255, .75); color: #fff; background: rgba(255, 255, 255, .06); backdrop-filter: blur(4px); }
.btn-ghost:hover { background: rgba(255, 255, 255, .16); transform: translateY(-2px); }
.btn-outline { border: 1px solid var(--brand-500); color: var(--brand-600); }
.btn-outline:hover { background: var(--brand-500); color: #fff; }
.btn-dark { background: var(--navy-800); color: #fff; }
.btn-dark:hover { background: var(--navy-700); transform: translateY(-2px); }

.link-more { display: inline-flex; align-items: center; gap: 6px; font-size: 15px; font-weight: 500; color: var(--brand-600); transition: gap .2s ease; }
.link-more:hover { gap: 12px; color: var(--brand-500); }
.link-more svg { width: 18px; height: 18px; }

.tag {
  display: inline-block; padding: 4px 12px; border-radius: 999px;
  font-size: 12.5px; font-weight: 500; line-height: 1.6;
}
.tag-blue { background: rgba(30, 111, 232, .1); color: var(--brand-600); }
.tag-cyan { background: rgba(25, 183, 230, .12); color: #0E86AC; }
.tag-amber { background: rgba(245, 166, 35, .14); color: #C77E0A; }
.tag-white { background: rgba(255, 255, 255, .16); color: #fff; }

/* ===== 顶栏 ===== */
.site-header { position: sticky; top: 0; z-index: 100; }
.header-top { background: var(--navy-900); color: #B9CCEA; font-size: 13px; }
.header-top .container { display: flex; justify-content: space-between; align-items: center; min-height: 38px; gap: 16px; }
.header-top a { transition: color .2s; }
.header-top a:hover { color: #fff; }
.header-top .ht-left { display: flex; gap: 24px; align-items: center; }
.header-top .ht-right { display: flex; gap: 24px; align-items: center; }
.ht-item { display: inline-flex; align-items: center; gap: 6px; }
.ht-item svg { width: 14px; height: 14px; opacity: .8; }

.header-main { background: #fff; border-bottom: 1px solid var(--line); transition: box-shadow .25s ease; }
.site-header.scrolled .header-main { box-shadow: var(--shadow-sm); }
.header-main .container { display: flex; align-items: center; justify-content: space-between; min-height: 74px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand img.logo-mark { width: 44px; height: 44px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-cn { font-size: 20px; font-weight: 700; color: var(--ink-900); letter-spacing: .02em; }
.brand-en { font-size: 11px; color: var(--ink-500); letter-spacing: .12em; text-transform: uppercase; margin-top: 2px; }

.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a {
  padding: 9px 16px; border-radius: 8px; font-size: 15.5px; font-weight: 500; color: var(--ink-700);
  transition: color .2s, background .2s; position: relative;
}
.site-nav a:hover { color: var(--brand-600); background: rgba(30, 111, 232, .06); }
.site-nav a.active { color: var(--brand-600); }
.site-nav a.active::after { content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px; height: 2px; border-radius: 2px; background: var(--brand-500); }

.header-cta { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.header-cta .btn { padding: 10px 20px; font-size: 14px; }
.header-tel { display: flex; flex-direction: column; line-height: 1.3; text-align: right; }
.header-tel small { font-size: 12px; color: var(--ink-500); }
.header-tel strong { font-size: 17px; color: var(--brand-600); font-weight: 700; letter-spacing: .02em; }

.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 8px; border: 1px solid var(--line); align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--ink-900); border-radius: 2px; transition: transform .25s, opacity .25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero（首页） ===== */
.hero { position: relative; min-height: 640px; display: flex; align-items: center; color: #fff; overflow: hidden; background: var(--navy-900); }
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 30%; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7, 24, 48, .92) 0%, rgba(7, 24, 48, .72) 42%, rgba(7, 24, 48, .25) 100%); }
.hero .container { position: relative; z-index: 2; padding-top: 64px; padding-bottom: 128px; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; letter-spacing: .18em; color: var(--cyan-500); font-weight: 500; }
.hero-eyebrow::before { content: ""; width: 34px; height: 2px; background: var(--cyan-500); }
.hero-title { font-size: 52px; line-height: 1.22; font-weight: 700; margin-top: 20px; max-width: 760px; letter-spacing: .01em; }
.hero-title .accent { color: var(--brand-400); }
.hero-sub { margin-top: 22px; font-size: 17px; color: #C6D6F0; max-width: 620px; }
.hero-actions { display: flex; gap: 16px; margin-top: 36px; flex-wrap: wrap; }
.hero-cert { display: flex; gap: 26px; margin-top: 44px; flex-wrap: wrap; }
.hero-cert .cert-item { display: flex; align-items: center; gap: 8px; font-size: 14px; color: #B9CCEA; }
.hero-cert .cert-item svg { width: 17px; height: 17px; color: var(--cyan-500); }

/* 数据条 */
.stats-strip { position: relative; z-index: 5; margin-top: -72px; }
.stats-card {
  background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
  display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden;
}
.stat-item { padding: 30px 24px; text-align: center; position: relative; }
.stat-item + .stat-item::before { content: ""; position: absolute; left: 0; top: 26%; bottom: 26%; width: 1px; background: var(--line); }
.stat-num { font-size: 40px; font-weight: 700; color: var(--brand-600); line-height: 1.2; font-variant-numeric: tabular-nums; }
.stat-num .unit { font-size: 18px; margin-left: 3px; color: var(--brand-500); }
.stat-label { margin-top: 6px; font-size: 14px; color: var(--ink-500); }

/* ===== 产品卡片 ===== */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.product-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(30, 111, 232, .35); }
.product-media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-soft); }
.product-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.product-card:hover .product-media img { transform: scale(1.05); }
.product-media .tag { position: absolute; left: 14px; top: 14px; z-index: 2; }
.product-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.product-name { font-size: 19px; font-weight: 700; color: var(--ink-900); }
.product-model { margin-top: 2px; font-size: 13px; color: var(--ink-500); letter-spacing: .04em; }
.product-desc { margin-top: 10px; font-size: 14px; color: var(--ink-500); }
.product-specs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.product-specs li { font-size: 12.5px; color: var(--ink-700); background: var(--bg-soft); border: 1px solid var(--line); padding: 4px 10px; border-radius: 6px; }
.product-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--line); }
.product-foot .link-more { font-size: 14px; }
.product-foot .icon-arrow { transition: transform .2s; }

/* ===== 行业应用 ===== */
.industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.industry-card {
  border: 1px solid rgba(255, 255, 255, .12); border-radius: var(--radius);
  padding: 26px 24px; background: rgba(255, 255, 255, .04);
  transition: background .3s, transform .3s, border-color .3s;
}
.industry-card:hover { background: rgba(255, 255, 255, .09); transform: translateY(-4px); border-color: rgba(25, 183, 230, .5); }
.industry-icon { width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center; background: rgba(25, 183, 230, .14); }
.industry-icon svg { width: 24px; height: 24px; color: var(--cyan-500); }
.industry-name { margin-top: 16px; font-size: 17px; font-weight: 700; color: #fff; }
.industry-desc { margin-top: 8px; font-size: 13.5px; color: #9DB4DA; }

/* ===== 核心能力 ===== */
.cap-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cap-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 30px 24px; transition: transform .3s, box-shadow .3s; position: relative; overflow: hidden;
}
.cap-card::after { content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--brand-500), var(--cyan-500)); opacity: 0; transition: opacity .3s; }
.cap-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.cap-card:hover::after { opacity: 1; }
.cap-num { font-size: 13px; font-weight: 700; color: var(--brand-400); letter-spacing: .08em; }
.cap-icon { width: 48px; height: 48px; border-radius: 12px; background: rgba(30, 111, 232, .1); display: flex; align-items: center; justify-content: center; margin-top: 16px; }
.cap-icon svg { width: 25px; height: 25px; color: var(--brand-600); }
.cap-title { margin-top: 16px; font-size: 18px; font-weight: 700; color: var(--ink-900); }
.cap-desc { margin-top: 10px; font-size: 14px; color: var(--ink-500); }

/* ===== 关于预览 ===== */
.about-preview { display: grid; grid-template-columns: 1.05fr 1fr; gap: 60px; align-items: center; }
.about-media { position: relative; }
.about-media .img-main { border-radius: var(--radius-lg); aspect-ratio: 4 / 3; object-fit: cover; width: 100%; box-shadow: var(--shadow-md); }
.about-media .img-float {
  position: absolute; right: -22px; bottom: -28px; width: 46%; border-radius: var(--radius);
  border: 6px solid #fff; box-shadow: var(--shadow-md); object-fit: cover; aspect-ratio: 3 / 2.1;
}
.about-badge {
  position: absolute; left: 20px; top: 20px; background: rgba(255, 255, 255, .94); border-radius: 12px;
  padding: 12px 18px; box-shadow: var(--shadow-sm); display: flex; align-items: center; gap: 10px;
}
.about-badge .badge-num { font-size: 26px; font-weight: 700; color: var(--brand-600); line-height: 1.1; }
.about-badge .badge-label { font-size: 12.5px; color: var(--ink-500); line-height: 1.4; }
.about-text .section-title { font-size: 32px; }
.about-text p { margin-top: 18px; font-size: 15px; }
.about-points { margin-top: 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.about-point { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; color: var(--ink-700); }
.about-point svg { width: 18px; height: 18px; color: var(--brand-500); flex-shrink: 0; margin-top: 4px; }
.about-text .btn { margin-top: 28px; }

/* ===== 新闻卡片 ===== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; transition: transform .3s, box-shadow .3s; display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.news-media { aspect-ratio: 16 / 10; overflow: hidden; position: relative; }
.news-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.news-card:hover .news-media img { transform: scale(1.05); }
.news-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; align-items: center; gap: 12px; font-size: 12.5px; color: var(--ink-500); }
.news-date { display: inline-flex; align-items: center; gap: 5px; }
.news-date svg { width: 13px; height: 13px; }
.news-title { margin-top: 10px; font-size: 17px; font-weight: 700; color: var(--ink-900); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-excerpt { margin-top: 10px; font-size: 13.5px; color: var(--ink-500); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-foot { margin-top: auto; padding-top: 14px; }
.news-foot .link-more { font-size: 13.5px; }

/* ===== CTA 带 ===== */
.cta-band { background: linear-gradient(120deg, var(--navy-900) 0%, var(--brand-700) 70%, var(--brand-600) 100%); color: #fff; }
.cta-band .container { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding-top: 56px; padding-bottom: 56px; flex-wrap: wrap; }
.cta-title { font-size: 28px; font-weight: 700; line-height: 1.4; }
.cta-sub { margin-top: 8px; color: #B9CCEA; font-size: 15px; }
.cta-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.cta-tel { display: flex; align-items: center; gap: 10px; }
.cta-tel svg { width: 22px; height: 22px; color: var(--cyan-500); }
.cta-tel strong { font-size: 24px; font-weight: 700; letter-spacing: .02em; }

/* ===== 页首横幅（子页） ===== */
.page-hero { position: relative; color: #fff; padding: 96px 0 84px; overflow: hidden; background: var(--navy-900); }
.page-hero .ph-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 55%; opacity: .42; }
.page-hero .ph-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(7, 24, 48, .55), rgba(7, 24, 48, .78)); }
.page-hero .container { position: relative; z-index: 2; }
.ph-title { font-size: 40px; font-weight: 700; line-height: 1.3; margin-top: 14px; }
.ph-sub { margin-top: 12px; color: #C6D6F0; max-width: 680px; font-size: 15.5px; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: #A9BFE3; }
.breadcrumb a { transition: color .2s; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb svg { width: 14px; height: 14px; opacity: .7; }
.breadcrumb .current { color: #fff; }

/* ===== 筛选栏 ===== */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.filter-btn {
  padding: 9px 22px; border-radius: 999px; border: 1px solid var(--line); background: #fff;
  font-size: 14.5px; font-weight: 500; color: var(--ink-700); transition: all .2s;
}
.filter-btn:hover { border-color: var(--brand-500); color: var(--brand-600); }
.filter-btn.active { background: var(--brand-500); border-color: var(--brand-500); color: #fff; box-shadow: 0 6px 16px rgba(30, 111, 232, .25); }

/* ===== 产品详情弹窗 ===== */
.modal { position: fixed; inset: 0; z-index: 200; display: none; align-items: center; justify-content: center; padding: 24px; }
.modal.open { display: flex; }
.modal-mask { position: absolute; inset: 0; background: rgba(7, 24, 48, .62); backdrop-filter: blur(3px); }
.modal-box {
  position: relative; width: 100%; max-width: 880px; max-height: 88vh; overflow-y: auto;
  background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
}
.modal-close { position: absolute; right: 16px; top: 16px; z-index: 3; width: 38px; height: 38px; border-radius: 50%; background: rgba(255, 255, 255, .92); box-shadow: var(--shadow-sm); display: flex; align-items: center; justify-content: center; transition: transform .2s, background .2s; }
.modal-close:hover { transform: rotate(90deg); background: #fff; }
.modal-close svg { width: 18px; height: 18px; color: var(--ink-700); }
.modal-hero { position: relative; height: 300px; overflow: hidden; }
.modal-hero img { width: 100%; height: 100%; object-fit: cover; }
.modal-hero .mh-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(7, 24, 48, .1), rgba(7, 24, 48, .62)); }
.modal-hero .mh-txt { position: absolute; left: 0; right: 0; bottom: 0; padding: 20px 40px 24px; color: #fff; }
.modal-hero .mh-name { font-size: 26px; font-weight: 700; }
.modal-hero .mh-model { font-size: 14px; color: #C6D6F0; margin-top: 4px; letter-spacing: .04em; }
.modal-body { padding: 28px 40px 40px; }
.modal-body h4 { font-size: 16px; font-weight: 700; color: var(--ink-900); margin: 26px 0 14px; display: flex; align-items: center; gap: 10px; }
.modal-body h4::before { content: ""; width: 4px; height: 16px; border-radius: 2px; background: var(--brand-500); }
.modal-body h4:first-child { margin-top: 0; }
.spec-table { width: 100%; border-collapse: collapse; table-layout: fixed; }
.spec-table th, .spec-table td { border: 1px solid var(--line); padding: 11px 14px; font-size: 14px; text-align: left; }
.spec-table th { width: 30%; background: var(--bg-soft); color: var(--ink-900); font-weight: 500; }
.spec-table td { color: var(--ink-700); }
.feature-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; }
.feature-list li { display: flex; gap: 8px; align-items: flex-start; font-size: 14px; color: var(--ink-700); }
.feature-list svg { width: 16px; height: 16px; color: var(--brand-500); flex-shrink: 0; margin-top: 4px; }
.modal-contact { margin-top: 28px; background: var(--bg-soft); border-radius: var(--radius); padding: 18px 22px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.modal-contact p { font-size: 14px; color: var(--ink-700); }
.modal-contact strong { color: var(--brand-600); font-size: 15px; }

/* ===== 关于页 ===== */
.intro-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center; }
.intro-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.intro-text .section-title { font-size: 32px; }
.intro-text p { margin-top: 16px; font-size: 15px; }
.intro-text p strong { color: var(--ink-900); }
.intro-data { margin-top: 26px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.intro-data li { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 14px 10px; text-align: center; }
.intro-data .d-num { font-size: 24px; font-weight: 700; color: var(--brand-600); line-height: 1.3; }
.intro-data .d-label { font-size: 12.5px; color: var(--ink-500); margin-top: 2px; }

/* 数据大条（暗色） */
.data-band { background: linear-gradient(120deg, var(--navy-900), var(--brand-700)); color: #fff; }
.data-band .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding-top: 60px; padding-bottom: 60px; }
.data-item { text-align: center; padding: 10px; }
.data-item .d-num { font-size: 42px; font-weight: 700; color: #fff; line-height: 1.2; font-variant-numeric: tabular-nums; }
.data-item .d-num .unit { font-size: 18px; color: var(--cyan-500); }
.data-item .d-label { margin-top: 8px; color: #B9CCEA; font-size: 14px; }

/* 时间轴 */
.timeline { position: relative; max-width: 900px; margin: 0 auto; }
.timeline::before { content: ""; position: absolute; left: 152px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(180deg, var(--brand-400), rgba(30, 111, 232, .12)); }
.tl-item { display: grid; grid-template-columns: 130px 60px 1fr; gap: 0; padding: 0 0 36px; position: relative; }
.tl-item:last-child { padding-bottom: 0; }
.tl-year { font-size: 19px; font-weight: 700; color: var(--brand-600); text-align: right; padding-right: 18px; padding-top: 2px; font-variant-numeric: tabular-nums; }
.tl-dot { display: flex; justify-content: center; position: relative; }
.tl-dot::before { content: ""; width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 3px solid var(--brand-500); box-shadow: 0 0 0 4px rgba(30, 111, 232, .15); margin-top: 8px; }
.tl-body { padding-left: 26px; }
.tl-title { font-size: 16.5px; font-weight: 700; color: var(--ink-900); }
.tl-desc { margin-top: 6px; font-size: 14px; color: var(--ink-500); max-width: 620px; }

/* 资质认证 */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cert-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px 22px; text-align: center; transition: transform .3s, box-shadow .3s; }
.cert-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.cert-icon { width: 54px; height: 54px; margin: 0 auto; border-radius: 50%; background: rgba(30, 111, 232, .09); display: flex; align-items: center; justify-content: center; }
.cert-icon svg { width: 28px; height: 28px; color: var(--brand-600); }
.cert-name { margin-top: 16px; font-size: 16px; font-weight: 700; color: var(--ink-900); }
.cert-org { margin-top: 6px; font-size: 13px; color: var(--ink-500); }

/* 三栏文化卡 */
.mv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.mv-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px 26px; }
.mv-card .mv-label { font-size: 13px; font-weight: 700; color: var(--cyan-500); letter-spacing: .12em; }
.mv-card h4 { margin-top: 10px; font-size: 20px; font-weight: 700; color: var(--ink-900); }
.mv-card p { margin-top: 12px; font-size: 14px; color: var(--ink-500); }

.gallery-grid { display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 20px; }
.gallery-grid figure { position: relative; border-radius: var(--radius); overflow: hidden; }
.gallery-grid figure img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.gallery-grid figure:hover img { transform: scale(1.05); }
.gallery-grid figure:first-child { grid-row: span 2; aspect-ratio: auto; min-height: 420px; }
.gallery-grid figure:not(:first-child) { aspect-ratio: 16 / 10; }
.gallery-cap { position: absolute; left: 0; right: 0; bottom: 0; padding: 40px 18px 14px; background: linear-gradient(180deg, transparent, rgba(7, 24, 48, .72)); color: #fff; font-size: 13.5px; font-weight: 500; }

/* ===== 新闻列表页 ===== */
.news-list { display: flex; flex-direction: column; gap: 24px; }
.news-list-card {
  display: grid; grid-template-columns: 300px 1fr; gap: 0; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden;
  transition: transform .3s, box-shadow .3s;
}
.news-list-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-list-card .nl-media { position: relative; min-height: 200px; }
.news-list-card .nl-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.news-list-card .nl-body { padding: 26px 30px; display: flex; flex-direction: column; }
.nl-meta { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--ink-500); }
.nl-title { margin-top: 12px; font-size: 21px; font-weight: 700; color: var(--ink-900); line-height: 1.45; }
.nl-excerpt { margin-top: 12px; font-size: 14.5px; color: var(--ink-500); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.nl-foot { margin-top: auto; padding-top: 16px; display: flex; justify-content: space-between; align-items: center; }
.nl-btn { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 500; color: var(--brand-600); }
.nl-btn:hover { color: var(--brand-500); }

/* 新闻正文弹窗 */
.article-head { padding: 34px 44px 0; }
.article-head .a-title { font-size: 26px; font-weight: 700; color: var(--ink-900); line-height: 1.5; }
.article-head .a-meta { display: flex; align-items: center; gap: 16px; margin-top: 14px; font-size: 13.5px; color: var(--ink-500); }
.article-cover { margin: 26px 44px 0; border-radius: var(--radius); overflow: hidden; }
.article-cover img { width: 100%; max-height: 380px; object-fit: cover; }
.article-content { padding: 26px 44px 44px; font-size: 15px; color: var(--ink-700); }
.article-content p { margin-bottom: 16px; text-align: justify; }
.article-content p:last-child { margin-bottom: 0; }
.article-content strong { color: var(--ink-900); }

/* ===== 联系页 ===== */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px 24px; transition: transform .3s, box-shadow .3s; }
.contact-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.contact-icon { width: 50px; height: 50px; border-radius: 12px; background: rgba(30, 111, 232, .1); display: flex; align-items: center; justify-content: center; }
.contact-icon svg { width: 26px; height: 26px; color: var(--brand-600); }
.contact-name { margin-top: 16px; font-size: 16.5px; font-weight: 700; color: var(--ink-900); }
.contact-value { margin-top: 8px; font-size: 15px; color: var(--ink-700); line-height: 1.7; }
.contact-value a:hover { color: var(--brand-600); }
.contact-value .sub { display: block; font-size: 13px; color: var(--ink-500); margin-top: 4px; }

/* 服务网络 */
.network-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.network-card { display: flex; gap: 18px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; transition: transform .3s, box-shadow .3s; }
.network-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.network-icon { width: 46px; height: 46px; border-radius: 12px; background: rgba(25, 183, 230, .12); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.network-icon svg { width: 24px; height: 24px; color: #0E86AC; }
.network-name { font-size: 17px; font-weight: 700; color: var(--ink-900); }
.network-desc { margin-top: 6px; font-size: 14px; color: var(--ink-500); }
.network-tel { margin-top: 8px; font-size: 14px; font-weight: 500; color: var(--brand-600); }

/* 手风琴 FAQ */
.accordion { max-width: 900px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.acc-item { background: #fff; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; transition: box-shadow .25s, border-color .25s; }
.acc-item.open { border-color: rgba(30, 111, 232, .45); box-shadow: var(--shadow-sm); }
.acc-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; cursor: pointer; }
.acc-head .acc-q { font-size: 16px; font-weight: 600; color: var(--ink-900); display: flex; gap: 12px; align-items: baseline; }
.acc-head .acc-q .q-num { font-size: 13px; font-weight: 700; color: var(--brand-400); }
.acc-icon { width: 28px; height: 28px; border-radius: 50%; border: 1.5px solid var(--line); display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: transform .3s, background .3s, border-color .3s; }
.acc-icon svg { width: 14px; height: 14px; color: var(--ink-500); transition: color .3s; }
.acc-item.open .acc-icon { transform: rotate(45deg); background: var(--brand-500); border-color: var(--brand-500); }
.acc-item.open .acc-icon svg { color: #fff; }
.acc-body { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.acc-body-inner { padding: 0 24px 22px 60px; font-size: 14.5px; color: var(--ink-700); }
.acc-body-inner p + p { margin-top: 8px; }

/* 到访提示 */
.visit-card { display: flex; gap: 22px; background: var(--navy-900); color: #EAF1FC; border-radius: var(--radius-lg); padding: 34px 38px; align-items: center; flex-wrap: wrap; }
.visit-card .v-icon { width: 54px; height: 54px; border-radius: 14px; background: rgba(25, 183, 230, .15); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.visit-card .v-icon svg { width: 28px; height: 28px; color: var(--cyan-500); }
.visit-card h3 { font-size: 20px; font-weight: 700; color: #fff; }
.visit-card p { margin-top: 6px; font-size: 14px; color: #A9BFE3; max-width: 760px; }

/* ===== 页脚 ===== */
.site-footer { background: var(--navy-950); color: #93A8CC; font-size: 14px; }
.footer-main { padding: 64px 0 40px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; }
.footer-brand img.logo-mark { width: 46px; height: 46px; }
.footer-brand .fb-cn { font-size: 19px; font-weight: 700; color: #fff; margin-top: 14px; }
.footer-brand .fb-en { font-size: 11px; letter-spacing: .12em; color: #5E759E; margin-top: 4px; }
.footer-brand p { margin-top: 14px; font-size: 13.5px; line-height: 1.9; max-width: 320px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 11px; }
.footer-col ul a { transition: color .2s, padding-left .2s; }
.footer-col ul a:hover { color: #fff; padding-left: 4px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 13px; }
.footer-contact svg { width: 16px; height: 16px; color: var(--cyan-500); flex-shrink: 0; margin-top: 4px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 20px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 13px; color: #5E759E; }

/* 返回顶部 */
.back-top {
  position: fixed; right: 26px; bottom: 30px; z-index: 90; width: 44px; height: 44px;
  border-radius: 12px; background: var(--brand-500); color: #fff; box-shadow: 0 8px 20px rgba(30, 111, 232, .35);
  display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden;
  transform: translateY(12px); transition: all .3s ease;
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--brand-600); }
.back-top svg { width: 20px; height: 20px; }

/* ===== 滚动揭示 ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ===== 空态与提示 ===== */
.empty-tip { text-align: center; padding: 60px 0; color: var(--ink-500); font-size: 15px; }

/* ===== 响应式 ===== */
@media (max-width: 1080px) {
  .product-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 36px; }
  .about-preview, .intro-grid { grid-template-columns: 1fr; gap: 44px; }
  .about-media .img-float { right: 8px; }
  .hero-title { font-size: 44px; }
  .timeline::before { left: 122px; }
  .tl-item { grid-template-columns: 100px 44px 1fr; }
}

@media (max-width: 860px) {
  .header-top .ht-right, .header-cta { display: none; }
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md);
    flex-direction: column; align-items: stretch; gap: 0; padding: 10px 24px 18px;
    display: none; max-height: calc(100vh - 90px); overflow-y: auto;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 13px 12px; border-radius: 10px; font-size: 16px; }
  .site-nav a.active::after { display: none; }
  .site-nav a.active { background: rgba(30, 111, 232, .08); }
}

@media (max-width: 720px) {
  .section { padding: 60px 0; }
  .section-title { font-size: 27px; }
  .hero { min-height: 540px; }
  .hero-title { font-size: 34px; }
  .hero-sub { font-size: 15px; }
  .stats-strip { margin-top: -48px; }
  .stats-card { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(3)::before { display: none; }
  .stat-item:nth-child(n+3) { border-top: 1px solid var(--line); }
  .stat-num { font-size: 32px; }
  .product-grid, .news-grid, .cap-grid, .cert-grid, .contact-grid, .industry-grid, .mv-grid { grid-template-columns: 1fr; }
  .data-band .container { grid-template-columns: repeat(2, 1fr); gap: 30px 16px; }
  .intro-data { grid-template-columns: repeat(2, 1fr); }
  .news-list-card { grid-template-columns: 1fr; }
  .news-list-card .nl-media { min-height: 190px; }
  .network-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .gallery-grid figure:first-child { grid-row: auto; min-height: 240px; }
  .timeline::before { left: 12px; }
  .tl-item { grid-template-columns: 44px 1fr; gap: 0; }
  .tl-year { grid-column: 2; text-align: left; padding: 0 0 2px 20px; font-size: 16px; }
  .tl-dot { grid-column: 1; grid-row: 1 / span 2; }
  .tl-dot::before { margin-top: 6px; }
  .tl-body { grid-column: 2; padding-left: 20px; }
  .modal-box { max-height: 92vh; }
  .modal-hero { height: 220px; }
  .modal-hero .mh-txt { padding: 16px 22px 20px; }
  .modal-body { padding: 22px 22px 28px; }
  .article-head, .article-cover { padding: 0 22px; }
  .article-content { padding: 20px 22px 28px; }
  .acc-body-inner { padding-left: 24px; }
  .visit-card { padding: 26px 22px; }
  .footer-main { grid-template-columns: 1fr; gap: 30px; }
  .cta-title { font-size: 23px; }
  .cta-tel strong { font-size: 20px; }
  .ph-title { font-size: 30px; }
  .page-hero { padding: 72px 0 64px; }
  .hero-cert { gap: 14px; }
  .feature-list { grid-template-columns: 1fr; }
}