/* ===== 博朗标识官网 多页版样式 ===== */
:root {
  --primary: #e63946;
  --primary-dark: #c1121f;
  --dark: #0d1321;
  --dark-2: #141c31;
  --text: #2b2d42;
  --text-light: #6c7080;
  --bg-light: #f5f6fa;
  --line: #e5e8f0;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(13,19,33,.08);
  --shadow-lg: 0 18px 44px rgba(13,19,33,.15);
}
* { 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(--text);
  line-height: 1.7;
  background: #fff;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; }
.container { width: min(1200px, 92%); margin: 0 auto; }

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  transition: all .25s;
  border: none;
  cursor: pointer;
  text-align: center;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 20px rgba(230,57,70,.35); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-ghost { border: 2px solid rgba(255,255,255,.75); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.14); }
.btn-outline { border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-block { width: 100%; }
.btn-phone {
  background: rgba(255,255,255,.08); color: #fff;
  padding: 9px 18px; font-size: 14px; border: 1px solid rgba(255,255,255,.25);
}
.btn-phone:hover { background: var(--primary); border-color: var(--primary); }

/* ===== 顶栏 ===== */
.topbar { background: #090d16; color: rgba(255,255,255,.72); font-size: 13px; padding: 7px 0; }
.topbar-wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.topbar-contact a { color: #ff8a8f; font-weight: 600; }
.topbar-contact a:hover { color: #fff; }

/* ===== 导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(13,19,33,.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 14px rgba(0,0,0,.18);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.logo { display: flex; align-items: center; }
.logo-img {
  display: flex; align-items: center; justify-content: center;
  background: transparent; border-radius: 0;
  height: 48px; padding: 0;
  box-shadow: none;
}
.logo-img img { height: 100%; width: auto; object-fit: contain; }
.main-nav { display: flex; gap: 4px; }
.main-nav a {
  color: rgba(255,255,255,.85);
  padding: 9px 16px; border-radius: 8px;
  font-size: 15.5px; font-weight: 500; transition: all .2s;
}
.main-nav a:hover { color: #fff; background: rgba(255,255,255,.1); }
.main-nav a.active { color: #fff; background: var(--primary); }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 28px; cursor: pointer; }

/* ===== Banner 轮播 ===== */
.banner { position: relative; overflow: hidden; color: #fff; }
.banner-slides { position: relative; min-height: 560px; }
.banner-slide {
  position: absolute; inset: 0;
  display: flex; align-items: center;
  opacity: 0; transition: opacity .8s ease; pointer-events: none;
}
.banner-slide.active { opacity: 1; pointer-events: auto; }
.banner-inner { padding: 60px 0; position: relative; z-index: 2; }
.banner-tag {
  display: inline-block;
  border: 1px solid rgba(255,255,255,.35);
  padding: 6px 18px; border-radius: 50px;
  font-size: 13.5px; letter-spacing: 2px; margin-bottom: 20px;
  background: rgba(255,255,255,.08);
}
.banner h1 { font-size: clamp(36px, 5.4vw, 60px); line-height: 1.2; font-weight: 800; margin-bottom: 16px; }
.banner h1 em { font-style: normal; color: #ff5a5f; text-shadow: 0 0 34px rgba(230,57,70,.55); }
.banner-sub { font-size: 17px; color: rgba(255,255,255,.8); margin-bottom: 30px; }
.banner-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.banner-dots { position: absolute; bottom: 26px; left: 0; right: 0; display: flex; gap: 10px; justify-content: center; z-index: 5; }
.banner-dots span { width: 34px; height: 4px; border-radius: 4px; background: rgba(255,255,255,.3); cursor: pointer; transition: background .3s; }
.banner-dots span.active { background: var(--primary); }
.banner-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 46px; height: 46px; border-radius: 50%;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.25);
  color: #fff; font-size: 26px; line-height: 1;
  cursor: pointer; transition: background .25s;
}
.banner-arrow:hover { background: var(--primary); border-color: var(--primary); }
.banner-arrow.prev { left: 20px; }
.banner-arrow.next { right: 20px; }

/* ===== 快捷入口 ===== */
.quick-section { background: var(--dark-2); padding: 0; }
.quick-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.quick-item {
  display: block; text-align: center; color: #fff;
  padding: 30px 16px; border-right: 1px solid rgba(255,255,255,.08);
  transition: background .25s;
}
.quick-item:last-child { border-right: none; }
.quick-item:hover { background: var(--primary); }
.q-icon { font-size: 34px; display: block; margin-bottom: 8px; }
.quick-item h4 { font-size: 17px; margin-bottom: 4px; }
.quick-item p { font-size: 12.5px; color: rgba(255,255,255,.65); }
.quick-item:hover p { color: rgba(255,255,255,.9); }

/* ===== 通用区块 ===== */
.section { padding: 84px 0; }
.section-light { background: var(--bg-light); }
.section-dark { background: var(--dark); }
.sec-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.sec-tag { color: var(--primary); font-weight: 700; letter-spacing: 3px; font-size: 13px; margin-bottom: 8px; }
.sec-head h2 { font-size: clamp(26px, 3.6vw, 36px); font-weight: 800; margin-bottom: 10px; }
.sec-head p:last-child { color: var(--text-light); }
.sec-head.light h2 { color: #fff; }
.sec-head.light p:last-child { color: rgba(255,255,255,.6); }
.sec-more { text-align: center; margin-top: 38px; }

/* ===== 产品网格 ===== */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
/* 少产品组：按实际数量列，卡片等宽居中，行完整不空角 */
.prod-grid.mini { grid-template-columns: repeat(var(--cols), 285px); justify-content: center; }
.prod-item {
  display: block; background: #fff; border-radius: 12px; overflow: hidden;
  box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s;
}
.prod-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.prod-img { display: block; width: 100%; aspect-ratio: 4 / 3; overflow: hidden; background: #eef0f6; }
.prod-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.prod-item:hover .prod-img img { transform: scale(1.07); }
.prod-name { display: block; padding: 13px 16px 4px; font-weight: 700; font-size: 15.5px; }
.prod-desc { display: block; padding: 0 16px 14px; color: var(--text-light); font-size: 12.5px; }

/* ===== 特色 ===== */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 32px 22px; text-align: center;
  transition: transform .3s, background .3s;
}
.feature:hover { transform: translateY(-6px); background: rgba(255,255,255,.1); }
.f-icon { font-size: 38px; display: block; margin-bottom: 12px; }
.feature h4 { color: #fff; font-size: 17px; margin-bottom: 8px; }
.feature p { color: rgba(255,255,255,.62); font-size: 13.5px; }

/* ===== 案例 ===== */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-grid.wide { grid-template-columns: repeat(4, 1fr); }
.case-item {
  display: block; border-radius: 12px; overflow: hidden;
  box-shadow: var(--shadow); background: #fff;
  transition: transform .3s, box-shadow .3s;
}
.case-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-img { display: block; height: 180px; overflow: hidden; background: #eef0f6; }
.case-grid.wide .case-img { height: 165px; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-item:hover .case-img img { transform: scale(1.07); }
.case-item p { padding: 12px 14px; font-weight: 600; font-size: 14px; text-align: center; }

/* ===== 客户 ===== */
.client-logos { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; align-items: stretch; justify-items: center; }
.client-logo { width: 100%; max-width: 250px; }
.client-logo {
  background: #fff; border: 1px solid var(--line);
  border-radius: 12px; padding: 18px 38px;
  font-size: 21px; font-weight: 800; letter-spacing: 2px;
  box-shadow: var(--shadow); transition: transform .25s;
}
.client-logo:hover { transform: translateY(-4px); }
.client-logo img { height: 44px; width: auto; max-width: 190px; object-fit: contain; }

/* ===== 新闻列表 ===== */
.news-list { max-width: 900px; margin: 0 auto; display: grid; gap: 14px; }
.news-row {
  display: flex; gap: 20px; align-items: center;
  background: #fff; border-radius: 12px; padding: 18px 22px;
  box-shadow: var(--shadow); border-left: 4px solid var(--primary);
  transition: transform .25s, box-shadow .25s;
}
.news-row:hover { transform: translateX(6px); box-shadow: var(--shadow-lg); }
.news-date { flex: 0 0 74px; text-align: center; color: var(--text-light); font-size: 12px; line-height: 1.4; }
.news-date b { display: block; font-size: 26px; color: var(--primary); font-weight: 800; line-height: 1.1; }
.news-txt h4 { font-size: 16.5px; margin-bottom: 4px; transition: color .2s; }
.news-row:hover .news-txt h4 { color: var(--primary); }
.news-txt p {
  color: var(--text-light); font-size: 13.5px;
  display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}
.news-notice {
  max-width: 900px; margin: 0 auto 22px;
  background: #fff7e6; border: 1px solid #ffd591; color: #ad6800;
  border-radius: 10px; padding: 10px 16px; font-size: 13.5px; text-align: center;
}

/* ===== 分页 ===== */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 40px; }
.pagination a, .pagination .page-cur {
  min-width: 38px; height: 38px; padding: 0 12px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: 8px;
  background: #fff; font-size: 14px; transition: all .2s;
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .page-cur { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 700; }

/* ===== 关于 CTA ===== */
.about-cta { display: flex; justify-content: space-between; align-items: center; gap: 30px; flex-wrap: wrap; color: #fff; }
.about-cta h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; margin-bottom: 8px; }
.about-cta p { color: rgba(255,255,255,.65); max-width: 640px; }
.cta-btns { display: flex; gap: 14px; }

/* ===== 走进博朗 图组（2026-09-08） ===== */
.about-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 46px; }
.about-gallery .case-img { height: 200px; border-radius: var(--radius); box-shadow: var(--shadow); }
.about-cta-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; flex: 0 0 400px; }
.about-cta-imgs .case-img { height: 150px; border-radius: var(--radius); box-shadow: 0 14px 34px rgba(0,0,0,.35); }

/* ===== 页脚 ===== */
.site-footer { background: #090d16; color: rgba(255,255,255,.6); padding: 44px 0 0; font-size: 14px; }
.footer-cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; padding-bottom: 34px; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.footer-col a { display: block; padding: 3px 0; color: rgba(255,255,255,.6); transition: color .2s; }
.footer-col a:hover { color: var(--primary); }
.footer-col p { padding: 3px 0; }
.footer-col a[href^="tel"]:hover { color: #ff8a8f; }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 16px 0; font-size: 13px;
}
.footer-icp a:hover { color: #fff; }

/* ===== 回到顶部 ===== */
.back-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 90;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; box-shadow: 0 8px 20px rgba(230,57,70,.4);
  opacity: 0; pointer-events: none; transition: all .3s;
}
.back-top.show { opacity: 1; pointer-events: auto; }

/* ===== 内页页头 ===== */
.page-head {
  background: linear-gradient(120deg, #0d1321, #2a1030 60%, #4a1220);
  color: #fff; text-align: center; padding: 64px 0 56px;
}
.page-head h1 { font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; margin-bottom: 8px; }
.page-head p { color: rgba(255,255,255,.7); font-size: 15.5px; }
.crumb { margin-top: 18px; font-size: 13px; color: rgba(255,255,255,.55); }
.crumb a:hover { color: #ff8a8f; }

/* ===== 分类锚点条 ===== */
.cat-tabs { background: var(--dark-2); position: sticky; top: 74px; z-index: 50; }
.cat-tabs .container { display: flex; gap: 6px; overflow-x: auto; }
.cat-tabs a {
  color: rgba(255,255,255,.8); font-size: 14.5px; font-weight: 600;
  padding: 13px 20px; white-space: nowrap; border-bottom: 3px solid transparent;
  transition: all .2s;
}
.cat-tabs a:hover { color: #fff; }
.cat-tabs a:active, .cat-tabs a:focus { color: #fff; }

/* ===== 分类标题 ===== */
.cat-title { font-size: 26px; font-weight: 800; margin-bottom: 4px; }
.cat-sub { color: var(--text-light); font-size: 14px; margin-bottom: 26px; }
.cat-sub3 {
  font-size: 16px; font-weight: 700; margin: 30px 0 14px;
  padding-left: 12px; border-left: 4px solid var(--red, #e63946);
  color: var(--dark-2);
}
.cat-sub3:first-of-type { margin-top: 0; }

/* ===== 案例筛选 ===== */
.filter-tabs { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 34px; }
.filter-tabs button {
  padding: 9px 24px; border-radius: 50px; border: 1.5px solid var(--line);
  background: #fff; color: var(--text); font-size: 14.5px; font-weight: 600;
  cursor: pointer; transition: all .2s;
}
.filter-tabs button:hover { border-color: var(--primary); color: var(--primary); }
.filter-tabs button.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ===== CTA 条 ===== */
.cta-strip { background: linear-gradient(120deg, #e63946, #ff7b54); padding: 44px 0; color: #fff; }
.cta-strip-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.cta-strip h3 { font-size: 24px; font-weight: 800; }
.cta-strip p { opacity: .9; font-size: 14.5px; }
.cta-strip .btn-primary { background: #fff; color: var(--primary); box-shadow: none; }
.cta-strip .btn-primary:hover { background: var(--dark); color: #fff; }

/* ===== 企业文化 ===== */
.culture-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.culture-item {
  background: #fff; border-radius: var(--radius); padding: 34px 20px; text-align: center;
  box-shadow: var(--shadow); transition: transform .25s;
}
.culture-item:hover { transform: translateY(-6px); }
.culture-item h4 { color: var(--primary); font-size: 15px; letter-spacing: 2px; margin-bottom: 10px; }
.culture-item p { font-size: 19px; font-weight: 800; line-height: 1.55; }

/* ===== 三大承诺 ===== */
.promise-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; max-width: 1000px; margin: 0 auto 0; }
.promise-item {
  background: #fff; border-radius: var(--radius); padding: 34px 28px;
  border-top: 4px solid var(--primary); position: relative; text-align: center;
  transition: transform .25s;
}
.promise-item:hover { transform: translateY(-6px); }
.p-num {
  width: 46px; height: 46px; margin: 0 auto 14px;
  background: var(--primary); color: #fff; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 17px;
}
.promise-item h4 { font-size: 17px; margin-bottom: 8px; }
.promise-item p { color: var(--text-light); font-size: 14px; }

/* ===== 关于页图文 ===== */
.about-wrap { display: grid; grid-template-columns: 1fr 1.1fr; gap: 52px; align-items: center; }
.about-img { height: 400px; border-radius: var(--radius); box-shadow: var(--shadow-lg); overflow: hidden; }
.about-img img { width: 100%; height: 100%; object-fit: cover; }
.about-text h2 { font-size: 32px; font-weight: 800; margin-bottom: 16px; }
.about-text p { color: var(--text-light); margin-bottom: 12px; }
.about-text strong { color: var(--text); }
.about-list li { padding: 4px 0; font-weight: 500; font-size: 15px; }

/* ===== 主要产品（关于页） ===== */
.lines-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.line-item {
  background: #fff; border-radius: var(--radius);
  padding: 28px 26px; box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
  transition: transform .25s, box-shadow .25s;
}
.line-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.line-item h3 { font-size: 17.5px; margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.line-item .ln {
  width: 32px; height: 32px; flex: 0 0 32px;
  background: var(--primary); color: #fff; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800;
}
.line-item ul li {
  position: relative; padding: 4px 0 4px 20px;
  color: var(--text-light); font-size: 14px; line-height: 1.7;
}
.line-item ul li::before {
  content: "✓"; position: absolute; left: 0; top: 4px;
  color: var(--primary); font-weight: 700;
}

/* ===== 联系页 ===== */
.contact-wrap { display: grid; grid-template-columns: 1.1fr 1fr; gap: 46px; align-items: start; }
.contact-form {
  background: var(--bg-light); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 34px;
  display: grid; gap: 14px;
}
.contact-form h3 { font-size: 20px; margin-bottom: 4px; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; padding: 13px 16px;
  background: #fff; border: 1px solid var(--line);
  border-radius: 10px; color: var(--text); font-size: 14.5px;
  font-family: inherit; transition: border-color .2s;
}
.contact-form input:focus, .contact-form textarea:focus, .contact-form select:focus {
  outline: none; border-color: var(--primary);
}
.form-tip { font-size: 12.5px; color: var(--text-light); text-align: center; }
.contact-info { display: grid; gap: 24px; }
.c-item { display: flex; gap: 16px; align-items: flex-start; }
.c-item > span { font-size: 28px; line-height: 1.2; }
.c-item h4 { font-size: 15px; margin-bottom: 2px; }
.c-item p { color: var(--text-light); font-size: 14.5px; }
.c-item a { color: var(--primary); font-weight: 600; }
.c-item a:hover { color: var(--primary-dark); }
.map-placeholder {
  background: var(--bg-light); border: 2px dashed var(--line); border-radius: var(--radius);
  height: 340px; display: flex; flex-direction: column; gap: 6px;
  align-items: center; justify-content: center;
  color: var(--text); font-size: 18px; font-weight: 600;
}
.map-placeholder span { font-size: 13px; color: var(--text-light); font-weight: 400; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .case-grid.wide { grid-template-columns: repeat(3, 1fr); }
  .prod-grid.mini { grid-template-columns: repeat(var(--cols), 260px); }
  .feature-grid, .culture-grid { grid-template-columns: repeat(2, 1fr); }
  .lines-grid { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .quick-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-item { border-bottom: 1px solid rgba(255,255,255,.08); }
  .case-grid, .case-grid.wide, .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid.mini { grid-template-columns: repeat(var(--cols), minmax(0, 1fr)); }
  .promise-grid { grid-template-columns: 1fr; max-width: 560px; }
  .about-wrap, .contact-wrap { grid-template-columns: 1fr; }
  .about-gallery { grid-template-columns: repeat(2, 1fr); }
  .about-cta-imgs { flex: 1 1 100%; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .banner-slides { min-height: 500px; }
}
@media (max-width: 720px) {
  .main-nav {
    position: fixed; top: 74px; left: 0; right: 0;
    background: var(--dark-2);
    flex-direction: column; padding: 12px 16px 20px;
    gap: 2px; display: none;
    box-shadow: 0 24px 44px rgba(0,0,0,.35);
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .btn-phone { display: none; }
  .topbar-slogan { display: none; }
  .topbar-wrap { justify-content: center; }
  .case-grid, .case-grid.wide, .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid.mini { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .prod-grid.mini[style*="--cols:1"], .prod-grid.mini[style*="--cols:3"] { grid-template-columns: 1fr; max-width: 420px; margin-inline: auto; }
  .case-img { height: 130px; }
  .banner-slides { min-height: 430px; }
  .banner-arrow { display: none; }
  .section { padding: 62px 0; }
  .news-row { flex-direction: row; padding: 14px 16px; }
  .news-date { flex-basis: 58px; }
  .footer-cols { grid-template-columns: 1fr; gap: 24px; }
  .about-img { height: 250px; }
  .feature-grid, .culture-grid { grid-template-columns: 1fr; }
}

/* ============ 图片灯箱 lightbox (2026-09-07, js/lightbox.js) ============ */
.prod-img, .case-img { position: relative; cursor: zoom-in; }
.lb-count { position: absolute; right: 6px; bottom: 6px; z-index: 2; pointer-events: none;
  background: rgba(0,0,0,.58); color: #fff; font-size: 11px; line-height: 1;
  padding: 4px 7px; border-radius: 10px; letter-spacing: .5px; }
.lb-overlay { position: fixed; inset: 0; z-index: 99999; display: none;
  flex-direction: column; align-items: center; justify-content: center;
  background: rgba(0,0,0,.93); }
.lb-overlay.on { display: flex; }
.lb-stage { max-width: 94vw; max-height: 82vh; }
.lb-stage img { display: block; max-width: 94vw; max-height: 82vh; object-fit: contain;
  background: #101010; border-radius: 6px; box-shadow: 0 6px 40px rgba(0,0,0,.6); }
.lb-info { margin-top: 14px; color: #ddd; font-size: 14px; display: flex; gap: 12px; align-items: center; }
.lb-title { color: #fff; }
.lb-count2 { color: #9aa; font-size: 13px; }
.lb-x, .lb-prev, .lb-next { position: absolute; border: none; cursor: pointer; z-index: 2;
  background: rgba(255,255,255,.14); color: #fff; border-radius: 50%;
  width: 46px; height: 46px; font-size: 24px; line-height: 1; display: flex;
  align-items: center; justify-content: center; transition: background .2s; }
.lb-x:hover, .lb-prev:hover, .lb-next:hover { background: rgba(255,255,255,.3); }
.lb-x { top: 16px; right: 18px; }
.lb-prev { left: 18px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 18px; top: 50%; transform: translateY(-50%); }
@media (max-width: 640px) {
  .lb-prev { left: 6px; } .lb-next { right: 6px; }
  .lb-stage img { max-width: 96vw; }
}

/* ===== 语言切换控件（i18n 2026-09-08 追加，仅新增样式，不改动现有组件） ===== */

/* ===== 灯箱 v2 缩略图条 (2026-09-09) ===== */
.lb-thumbs { display: flex; gap: 8px; margin-top: 14px; max-width: 92vw;
  overflow-x: auto; padding: 4px 2px 2px; scrollbar-width: thin; }
.lb-thumbs img { height: 54px; width: auto; border-radius: 6px; cursor: pointer;
  flex: none; border: 2px solid rgba(255,255,255,.25); opacity: .82;
  transition: border-color .15s, opacity .15s; background: #2a2a2a; }
.lb-thumbs img.on { border-color: #ffd34d; opacity: 1; }
.lb-thumbs img:hover { border-color: #fff; opacity: 1; }
@media (max-width: 640px) {
  .lb-thumbs { max-width: 96vw; margin-top: 10px; }
  .lb-thumbs img { height: 42px; }
}
/* ===== 语言切换（i18n 2026-09-09，v2 下拉版 2026-09-09 晚） ===== */
.lang-select {
  margin-left: 8px;
  padding: 5px 6px;
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.9);
  font-size: 13px; font-weight: 600; line-height: 1.2;
  font-family: inherit;
  cursor: pointer;
  flex: none;
  max-width: 120px;
  outline: none;
}
.lang-select:hover { background: rgba(255,255,255,.16); }
.lang-select option { color: #222; background: #fff; }
/* 移动端下拉菜单 */
@media (max-width: 720px) {
  .lang-select { align-self: flex-start; margin: 10px 4px 4px; }
}
/* 阿拉伯语 RTL：正文默认右对齐（站点未显式 text-align:left 的块自动镜像，这里兜底段落/标题） */
html[dir="rtl"] p, html[dir="rtl"] h1, html[dir="rtl"] h2, html[dir="rtl"] h3, html[dir="rtl"] h4,
html[dir="rtl"] li, html[dir="rtl"] td, html[dir="rtl"] th, html[dir="rtl"] .prod-name,
html[dir="rtl"] .sec-desc, html[dir="rtl"] .crumb, html[dir="rtl"] .news-item {
  text-align: right;
}
/* 长语言下导航压缩（en/ru 导航项较长） */
@media (max-width: 1180px) {
  html[lang="en"] .main-nav a, html[lang="ru"] .main-nav a { padding: 9px 10px; font-size: 14px; }
  html[lang="en"] .btn-phone, html[lang="ru"] .btn-phone { display: none; }
}

/* ===== 为什么选择博朗: 左文右图分栏 (2026-09-08) ===== */
.why-split { display: flex; align-items: center; gap: 44px; }
.why-left { flex: 1 1 auto; min-width: 0; }
.why-left .sec-head { text-align: left; margin-bottom: 26px; }
.why-left .feature-grid { grid-template-columns: repeat(2, 1fr); }
.why-right { flex: 0 0 420px; }
.why-right img { width: 100%; height: 460px; object-fit: cover; border-radius: var(--radius); box-shadow: 0 18px 44px rgba(0,0,0,.45); display: block; }
@media (max-width: 900px) {
  .why-split { flex-direction: column; }
  .why-right { flex: 1 1 auto; width: 100%; }
  .why-right img { height: 300px; }
  .why-left .feature-grid { grid-template-columns: 1fr 1fr; }
}


.banner-text { flex: 1 1 auto; min-width: 0; }
/* ===== banner 左文右图 (2026-09-08 股神定: 黑底文字+右侧小图) ===== */
.banner-slide { background: linear-gradient(120deg, #0d1321 0%, #1c1026 60%, #2a1030 100%); }
.banner-slide:nth-child(2) { background: linear-gradient(120deg, #0d1321 0%, #0c1f2e 60%, #0d2b3a 100%); }
.banner-slide:nth-child(3) { background: linear-gradient(120deg, #0d1321 0%, #1a150c 60%, #241c0e 100%); }
.banner-inner { display: flex; align-items: center; justify-content: space-between; gap: 56px; }
.banner-inner > *:not(.banner-media) { max-width: 540px; }
.banner-media { flex: 0 0 54%; max-width: 680px; }
.banner-media img { width: 100%; height: 440px; object-fit: cover; border-radius: 14px; box-shadow: 0 24px 60px rgba(0,0,0,.5); border: 1px solid rgba(255,255,255,.14); display: block; }
@media (max-width: 900px) {
  .banner-inner { flex-direction: column; justify-content: center; gap: 24px; text-align: center; }
  .banner-media { display: none; }
  .banner-actions { justify-content: center; }
}

/* banner 右侧四宫格 (2026-09-08 股神: 单图→2x2, 届时放 4 张) */
.banner-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; flex: 0 0 58%; max-width: 700px; }
.banner-grid img { width: 100%; height: 212px; object-fit: cover; border-radius: 10px; box-shadow: 0 14px 34px rgba(0,0,0,.45); border: 1px solid rgba(255,255,255,.12); display: block; }
@media (max-width: 900px) {
  .banner-grid { display: none; }
}

/* ===== 语言切换（i18n 2026-09-09 追加）===== */
.lang-item {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  margin-left: 8px;
  padding: 3px;
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 8px;
  background: rgba(255,255,255,.06);
  flex: none;
}
.lang-btn {
  background: none; border: none; cursor: pointer;
  color: rgba(255,255,255,.85);
  font-size: 13px; font-weight: 600; line-height: 1;
  padding: 5px 8px; border-radius: 6px;
  transition: all .2s;
  font-family: inherit;
}
.lang-btn:hover { color: #fff; background: rgba(255,255,255,.14); }
.lang-btn.active { background: #fff; color: var(--dark); }
.lang-sep { color: rgba(255,255,255,.4); font-size: 12px; }
/* 移动端下拉菜单内 */
@media (max-width: 720px) {
  .lang-item { align-self: flex-start; margin: 10px 4px 4px; }
}
/* 英文导航在窄屏更宽：≤1024px 时压缩英文导航字号、隐藏导航电话按钮（号码在顶栏仍可见），中文不受影响 */
@media (max-width: 1024px) {
  html[lang="en"] .main-nav a { padding: 9px 10px; font-size: 14px; }
  html[lang="en"] .btn-phone { display: none; }
}