/* =====================================================
   门窗网站前台样式  |  设计基调：深蓝黑 × 铜金 × 暖白
   ===================================================== */
:root {
  --ink: #14202b;          /* 深蓝黑 */
  --ink-2: #1d2f3f;
  --gold: #c9a063;         /* 铜金 */
  --gold-d: #b3894e;
  --bg: #f7f6f3;           /* 暖白 */
  --bg-2: #efece6;
  --line: #e6e1d8;
  --txt: #333;
  --muted: #8a8f94;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(20, 32, 43, .08);
}
* { 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(--txt); background: #fff; font-size: 15px; line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: min(1200px, 92%); margin: 0 auto; }

/* ---------- 顶条 & 头部 ---------- */
.topbar { background: var(--ink); color: rgba(255,255,255,.75); font-size: 12.5px; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; min-height: 34px; }
.topbar-tel b { color: var(--gold); font-size: 14px; margin-left: 4px; }

.site-header {
  position: sticky; top: 0; z-index: 100; background: #fff;
  box-shadow: 0 1px 0 rgba(0,0,0,.06); transition: box-shadow .25s;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(20,32,43,.12); }
.header-inner { display: flex; align-items: center; gap: 34px; height: 76px; }
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-mark { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; width: 38px; height: 38px; padding: 5px; background: var(--ink); border-radius: 6px; }
.logo-mark i { background: var(--gold); border-radius: 2px; }
.logo-mark i:last-child { background: rgba(201,160,99,.45); }
.logo-text strong { display: block; font-size: 21px; letter-spacing: 3px; color: var(--ink); line-height: 1.2; }
.logo-text em { display: block; font-style: normal; font-size: 10px; letter-spacing: 4px; color: var(--gold); }

.nav { display: flex; align-items: center; gap: 6px; flex: 1; }
.nav > a, .nav-item > a { display: block; padding: 8px 16px; font-size: 15.5px; color: var(--ink); border-radius: 6px; position: relative; }
.nav > a:hover, .nav-item > a:hover, .nav > a.on, .nav-item > a.on { color: var(--gold-d); }
.nav > a.on::after, .nav-item > a.on::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px; height: 2px; background: var(--gold); border-radius: 2px;
}
.nav-item { position: relative; }
.caret { display: inline-block; width: 7px; height: 7px; border-right: 1.6px solid currentColor; border-bottom: 1.6px solid currentColor; transform: rotate(45deg) translateY(-2px); margin-left: 6px; }
.subnav {
  position: absolute; top: calc(100% + 10px); left: 0; min-width: 176px; background: #fff; border-radius: 8px;
  box-shadow: 0 14px 40px rgba(20,32,43,.16); padding: 8px; opacity: 0; visibility: hidden; transform: translateY(8px); transition: all .22s;
}
.nav-item:hover .subnav { opacity: 1; visibility: visible; transform: translateY(0); }
.subnav a { display: block; padding: 9px 14px; border-radius: 6px; font-size: 14px; }
.subnav a:hover { background: var(--bg); color: var(--gold-d); }

.header-tel { text-align: right; flex-shrink: 0; line-height: 1.3; }
.header-tel .ht-label { display: block; font-size: 11px; color: var(--muted); letter-spacing: 1px; }
.header-tel strong { font-size: 19px; color: var(--ink); letter-spacing: .5px; }
.menu-btn { display: none; background: none; border: 0; cursor: pointer; width: 40px; height: 40px; padding: 8px; }
.menu-btn span { display: block; height: 2px; background: var(--ink); margin: 6px 0; border-radius: 2px; transition: all .25s; }

/* ---------- 轮播 ---------- */
.slider { position: relative; height: 560px; background: var(--ink); overflow: hidden; }
.slide {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: 0; visibility: hidden; transition: opacity .9s ease, visibility .9s;
  display: flex; align-items: center;
}
.slide.active { opacity: 1; visibility: visible; }
.slide-inner h2 { color: #fff; font-size: 52px; letter-spacing: 6px; font-weight: 700; text-shadow: 0 4px 24px rgba(0,0,0,.35); }
.slide-inner p { color: rgba(255,255,255,.85); font-size: 18px; margin: 18px 0 30px; letter-spacing: 2px; }
.slide-btns { display: flex; gap: 14px; }
.slider-dots { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 5; }
.slider-dots span { width: 26px; height: 3px; background: rgba(255,255,255,.4); border-radius: 2px; cursor: pointer; transition: background .25s; }
.slider-dots span.on { background: var(--gold); }
.slider-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); width: 46px; height: 46px; border-radius: 50%;
  background: rgba(255,255,255,.14); cursor: pointer; z-index: 5; transition: background .2s;
}
.slider-arrow:hover { background: rgba(255,255,255,.3); }
.slider-arrow::before { content: ""; position: absolute; top: 50%; left: 50%; width: 12px; height: 12px; border-top: 2.5px solid #fff; border-left: 2.5px solid #fff; }
.slider-arrow.prev { left: 24px; } .slider-arrow.prev::before { transform: translate(-30%, -50%) rotate(-45deg); }
.slider-arrow.next { right: 24px; } .slider-arrow.next::before { transform: translate(-70%, -50%) rotate(135deg); }

/* ---------- 通用 ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--bg); }
.section-dark { background: var(--ink); color: #fff; }
.sec-head { text-align: center; margin-bottom: 46px; }
.sec-head em { font-style: normal; font-size: 13px; letter-spacing: 6px; color: var(--gold); }
.sec-head h2 { font-size: 34px; color: var(--ink); letter-spacing: 4px; margin: 8px 0 10px; }
.section-dark .sec-head h2 { color: #fff; }
.sec-head p { color: var(--muted); }
.sec-head h2 small { font-size: 16px; color: var(--muted); letter-spacing: 2px; margin-left: 8px; font-weight: 400; }
.sec-head-left { text-align: left; margin-bottom: 26px; }
.sec-head-row { display: flex; justify-content: space-between; align-items: flex-end; }
.sec-head-row .sec-head-inner { text-align: left; }
.more-link { color: var(--gold-d); font-size: 14px; white-space: nowrap; padding-bottom: 6px; }
.more-link.light { color: var(--gold); }
.more-link:hover { opacity: .8; }

.btn {
  display: inline-block; padding: 12px 30px; border-radius: 6px; font-size: 15px; letter-spacing: 2px;
  border: 1.6px solid transparent; cursor: pointer; transition: all .22s; text-align: center;
}
.btn-gold { background: var(--gold); color: #fff; }
.btn-gold:hover { background: var(--gold-d); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(201,160,99,.4); }
.btn-ghost { border-color: rgba(255,255,255,.65); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.14); }
.btn-ghost-dark { border-color: var(--ink); color: var(--ink); }
.btn-ghost-dark:hover { background: var(--ink); color: #fff; }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--ink-2); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(20,32,43,.3); }
.btn.big { padding: 15px 38px; font-size: 16px; }
.btn.block { display: block; width: 100%; }
.center-link { text-align: center; margin-top: 44px; }

/* ---------- 产品分类瓷砖 ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cat-tile {
  position: relative; border-radius: var(--radius); overflow: hidden; background: var(--bg-2);
  box-shadow: var(--shadow); transition: transform .28s; display: block;
}
.cat-tile:hover { transform: translateY(-6px); }
.cat-thumb { display: block; height: 210px; background-size: cover; background-position: center; transition: transform .5s; }
.cat-tile:hover .cat-thumb { transform: scale(1.06); }
.cat-name { display: block; padding: 16px 18px 4px; font-size: 17px; font-weight: 600; color: var(--ink); }
.cat-count { display: block; padding: 0 18px 16px; font-size: 12.5px; color: var(--muted); }
.cat-count .arr { display: inline-block; width: 10px; height: 10px; border-top: 1.6px solid var(--gold); border-right: 1.6px solid var(--gold); transform: rotate(45deg); margin-left: 4px; }

/* ---------- 关于 ---------- */
.about-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; margin-bottom: 60px; }
.about-text .lead { font-size: 16.5px; color: #444; margin-bottom: 18px; }
.about-points li { padding: 7px 0 7px 26px; position: relative; color: #555; }
.about-points li::before { content: ""; position: absolute; left: 4px; top: 15px; width: 7px; height: 7px; background: var(--gold); border-radius: 2px; transform: rotate(45deg); }
.about-text .btn { margin-top: 22px; }
.about-figure { position: relative; }
.about-img { height: 420px; border-radius: 14px; background-size: cover; background-position: center; box-shadow: var(--shadow); }
.about-badge {
  position: absolute; left: -28px; bottom: -26px; background: var(--ink); color: #fff; border-radius: 12px;
  padding: 20px 26px; display: flex; align-items: baseline; gap: 8px; box-shadow: 0 16px 40px rgba(20,32,43,.35);
}
.about-badge strong { font-size: 44px; color: var(--gold); font-family: Georgia, serif; }
.about-badge span { font-size: 13px; color: rgba(255,255,255,.8); }

.stats-band {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; background: var(--ink);
  border-radius: 14px; padding: 38px 20px; text-align: center; color: #fff;
  box-shadow: 0 18px 44px rgba(20,32,43,.28);
}
.stat strong { display: block; font-size: 40px; color: var(--gold); font-family: Georgia, serif; }
.stat span { font-size: 14px; color: rgba(255,255,255,.75); letter-spacing: 2px; }

/* ---------- 产品卡片 ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.prod-grid-3 { grid-template-columns: repeat(3, 1fr); }
.prod-grid-4 { grid-template-columns: repeat(4, 1fr); }
.pcard {
  background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
  transition: transform .28s, box-shadow .28s; display: block;
}
.pcard:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(20,32,43,.14); }
.pcard-img { display: block; height: 218px; background-size: cover; background-position: center; transition: transform .5s; }
.pcard:hover .pcard-img { transform: scale(1.05); }
.pcard-body { display: block; padding: 15px 16px 18px; }
.pcard-body em { font-style: normal; font-size: 12px; color: var(--gold-d); letter-spacing: 1px; }
.pcard-body strong { display: block; font-size: 16px; color: var(--ink); margin: 5px 0 6px; }
.pcard-sum { display: block; font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.case-grid-3 { grid-template-columns: repeat(3, 1fr); }
.case-card { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); overflow: hidden; transition: transform .28s, background .28s; display: block; }
.section:not(.section-dark) .case-card { background: #fff; border-color: var(--line); }
.case-card:hover { transform: translateY(-6px); }
.case-img { display: block; height: 190px; background-size: cover; background-position: center; }
.case-body { display: block; padding: 15px 16px 17px; }
.case-body strong { display: block; font-size: 15.5px; margin-bottom: 8px; color: var(--ink); }
.section-dark .case-body strong { color: #fff; }
.case-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.case-meta i { font-style: normal; font-size: 12px; padding: 3px 10px; border-radius: 20px; background: rgba(201,160,99,.14); color: var(--gold-d); }
.section-dark .case-meta i { background: rgba(201,160,99,.2); color: var(--gold); }

/* ---------- 服务步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.step { text-align: center; padding: 30px 14px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: transform .28s, box-shadow .28s; }
.step:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.step i { display: inline-grid; place-items: center; width: 52px; height: 52px; border-radius: 50%; background: var(--bg); color: var(--gold-d); font-style: normal; font-size: 18px; font-weight: 700; font-family: Georgia, serif; border: 1px solid var(--line); }
.step strong { display: block; margin: 14px 0 6px; font-size: 16.5px; color: var(--ink); }
.step span { font-size: 12.5px; color: var(--muted); }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.news-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .28s, box-shadow .28s; display: block; }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.news-img { display: block; height: 178px; background-size: cover; background-position: center; }
.news-body { display: block; padding: 18px 18px 20px; }
.news-date { font-style: normal; font-size: 12.5px; color: var(--gold-d); }
.news-body strong { display: block; font-size: 16px; color: var(--ink); margin: 8px 0; line-height: 1.5; }
.news-sum { display: block; font-size: 13px; color: var(--muted); line-height: 1.7; }

/* ---------- CTA ---------- */
.cta-band { background: linear-gradient(120deg, var(--ink) 0%, #2c4358 100%); color: #fff; padding: 56px 0; }
.cta-inner { display: flex; justify-content: space-between; align-items: center; gap: 30px; flex-wrap: wrap; }
.cta-inner h3 { font-size: 27px; letter-spacing: 3px; margin-bottom: 8px; }
.cta-inner p { color: rgba(255,255,255,.7); }

/* ---------- 页脚 ---------- */
.site-footer { background: #0e1720; color: rgba(255,255,255,.65); padding: 60px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.3fr; gap: 34px; padding-bottom: 44px; }
.f-logo { font-size: 24px; color: #fff; letter-spacing: 4px; margin-bottom: 6px; }
.f-slogan { font-size: 13px; margin-bottom: 22px; }
.f-hotline span { display: block; font-size: 12px; margin-bottom: 2px; }
.f-hotline strong { font-size: 26px; color: var(--gold); font-family: Georgia, serif; letter-spacing: 1px; }
.f-col h4 { color: #fff; font-size: 15.5px; letter-spacing: 2px; margin-bottom: 16px; position: relative; padding-bottom: 10px; }
.f-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--gold); }
.f-col ul li { padding: 4px 0; }
.f-col a:hover { color: var(--gold); }
.f-qr img { width: 120px; border-radius: 8px; margin: 0 auto 8px; }
.f-qr span { display: block; text-align: center; font-size: 12px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.09); padding: 18px 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 12.5px; color: rgba(255,255,255,.4); }
.hot-words { padding: 16px 0 6px; font-size: 12.5px; color: rgba(255,255,255,.55); }
.hot-words span { color: rgba(255,255,255,.8); }
.hot-words a { color: rgba(255,255,255,.55); margin-right: 14px; display: inline-block; padding: 2px 0; }
.hot-words a:hover { color: var(--gold); }

/* ---------- 悬浮条 ---------- */
.float-bar { position: fixed; right: 16px; bottom: 18%; z-index: 90; display: flex; flex-direction: column; gap: 8px; }
.fb-item { width: 62px; height: 62px; background: #fff; border: 1px solid var(--line); border-radius: 10px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; cursor: pointer; box-shadow: 0 8px 22px rgba(20,32,43,.12); position: relative; transition: all .22s; }
.fb-item:hover { background: var(--ink); border-color: var(--ink); }
.fb-item span { font-size: 11px; color: var(--ink); }
.fb-item:hover span { color: #fff; }
.fb-item:hover .fb-ico { border-color: var(--gold); }
.fb-ico { width: 18px; height: 18px; border: 2px solid var(--ink); border-radius: 4px; position: relative; }
.fb-tel .fb-ico { border-radius: 50%; transform: rotate(-12deg); }
.fb-msg .fb-ico { border-radius: 10px 10px 10px 2px; }
.fb-top .fb-ico { border-width: 0 2px 2px 0; width: 10px; height: 10px; transform: rotate(-45deg); margin-top: 8px; }
.fb-wechat .fb-pop { position: absolute; right: 74px; top: 0; background: #fff; border-radius: 10px; padding: 10px; box-shadow: 0 14px 36px rgba(20,32,43,.2); opacity: 0; visibility: hidden; transition: all .22s; width: 150px; }
.fb-wechat:hover .fb-pop { opacity: 1; visibility: visible; }
.fb-wechat .fb-pop img { width: 100%; border-radius: 6px; }
.fb-wechat .fb-pop em { display: block; text-align: center; font-style: normal; font-size: 12px; margin-top: 6px; color: var(--ink); }

/* ---------- 内页头图 / 面包屑 ---------- */
.page-hero { background: linear-gradient(120deg, var(--ink), #2c4358); color: #fff; padding: 72px 0 64px; text-align: center; }
.page-hero-sm { padding: 48px 0 40px; }
.page-hero em { font-style: normal; letter-spacing: 8px; font-size: 13px; color: var(--gold); }
.page-hero h1 { font-size: 34px; letter-spacing: 6px; margin: 10px 0 8px; }
.page-hero p { color: rgba(255,255,255,.65); font-size: 14px; }
.crumb { background: var(--bg); border-bottom: 1px solid var(--line); padding: 14px 0; font-size: 13px; color: var(--muted); }
.crumb a:hover { color: var(--gold-d); }
.crumb i { margin: 0 8px; font-style: normal; color: #c8c2b8; }
.crumb b { color: var(--ink); font-weight: 600; }

/* ---------- 产品列表布局 ---------- */
.layout-side { display: grid; grid-template-columns: 250px 1fr; gap: 30px; padding: 44px 0 84px; }
.side-cats { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-bottom: 20px; }
.side-cats h3 { background: var(--ink); color: #fff; font-size: 15.5px; padding: 13px 18px; letter-spacing: 2px; }
.side-cats a { display: flex; justify-content: space-between; align-items: center; padding: 12px 18px; border-bottom: 1px solid var(--line); font-size: 14.5px; transition: all .2s; }
.side-cats a:last-child { border-bottom: 0; }
.side-cats a span { color: var(--muted); font-size: 12.5px; }
.side-cats a:hover, .side-cats a.on { background: var(--bg); color: var(--gold-d); padding-left: 24px; }
.side-card { background: var(--ink); color: #fff; border-radius: var(--radius); padding: 24px 20px; }
.side-card h3 { font-size: 17px; letter-spacing: 2px; margin-bottom: 10px; }
.side-card p { font-size: 13px; color: rgba(255,255,255,.7); margin-bottom: 16px; }

.filter-bar { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 22px; }
.filter-cats { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-cats a { padding: 7px 15px; border-radius: 20px; background: #fff; border: 1px solid var(--line); font-size: 13.5px; transition: all .2s; }
.filter-cats a:hover, .filter-cats a.on { background: var(--ink); border-color: var(--ink); color: #fff; }
.filter-search { display: flex; }
.filter-search input { border: 1px solid var(--line); border-right: 0; padding: 9px 14px; border-radius: 6px 0 0 6px; width: 210px; outline: none; font-size: 13.5px; }
.filter-search input:focus { border-color: var(--gold); }
.filter-search button { border: 0; background: var(--gold); color: #fff; padding: 0 20px; border-radius: 0 6px 6px 0; cursor: pointer; font-size: 13.5px; }
.filter-search button:hover { background: var(--gold-d); }

.pager { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.pager a { min-width: 38px; height: 38px; display: inline-grid; place-items: center; padding: 0 12px; background: #fff; border: 1px solid var(--line); border-radius: 6px; font-size: 14px; transition: all .2s; }
.pager a:hover, .pager a.on { background: var(--ink); border-color: var(--ink); color: #fff; }

.empty-box { text-align: center; padding: 90px 20px; background: #fff; border: 1px dashed var(--line); border-radius: var(--radius); }
.empty-box strong { font-size: 19px; color: var(--ink); display: block; margin-bottom: 8px; }
.empty-box p { color: var(--muted); margin-bottom: 20px; }

/* ---------- 详情页 ---------- */
.detail-wrap { padding: 40px 0 84px; }
.detail-wrap-narrow { display: grid; grid-template-columns: 1fr 300px; gap: 40px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: start; }
.detail-img { height: 430px; border-radius: 14px; background-size: cover; background-position: center; box-shadow: var(--shadow); }
.detail-cat { font-style: normal; color: var(--gold-d); font-size: 13.5px; letter-spacing: 2px; }
.detail-info h1 { font-size: 30px; color: var(--ink); margin: 10px 0 12px; letter-spacing: 1px; }
.detail-sum { color: #666; padding-bottom: 18px; border-bottom: 1px dashed var(--line); margin-bottom: 18px; }
.param-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; }
.param-table th, .param-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); font-size: 14px; }
.param-table th { color: var(--muted); font-weight: 400; width: 88px; white-space: nowrap; }
.detail-btns { display: flex; gap: 12px; }
.detail-sub { font-size: 21px; color: var(--ink); letter-spacing: 2px; margin: 44px 0 18px; position: relative; padding-left: 16px; }
.detail-sub::before { content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px; background: var(--gold); border-radius: 3px; }
.detail-content p { color: #555; margin-bottom: 14px; line-height: 2; }
.detail-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--line); }
.detail-nav a { max-width: 48%; color: var(--muted); font-size: 13px; }
.detail-nav a:hover b { color: var(--gold-d); }
.detail-nav b { display: block; color: var(--ink); font-size: 14.5px; margin-top: 4px; font-weight: 600; }
.ta-r { text-align: right; }
.detail-related { margin-top: 60px; }
.rich-text p { margin-bottom: 14px; color: #555; line-height: 2; }

/* 案例详情 */
.case-detail-head { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }
.chip { background: var(--bg); border: 1px solid var(--line); padding: 6px 14px; border-radius: 20px; font-size: 13px; color: #666; }
.case-detail-img { height: 420px; border-radius: 14px; background-size: cover; background-position: center; margin: 10px 0 30px; box-shadow: var(--shadow); }

/* 新闻详情 */
.news-detail h1 { font-size: 27px; color: var(--ink); line-height: 1.5; margin-bottom: 12px; }
.news-meta { display: flex; gap: 22px; color: var(--muted); font-size: 13px; padding-bottom: 18px; border-bottom: 1px solid var(--line); margin-bottom: 22px; }
.news-side { background: var(--bg); border-radius: var(--radius); padding: 22px; align-self: start; position: sticky; top: 100px; }
.news-side h3 { font-size: 17px; color: var(--ink); margin-bottom: 14px; letter-spacing: 1px; }
.side-news { display: flex; gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); }
.side-news-img { width: 76px; height: 56px; flex-shrink: 0; border-radius: 6px; background-size: cover; background-position: center; }
.side-news strong { display: block; font-size: 13.5px; color: var(--ink); line-height: 1.5; font-weight: 600; }
.side-news em { font-style: normal; font-size: 12px; color: var(--muted); }
.side-news:hover strong { color: var(--gold-d); }

/* ---------- 关于页优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.adv-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 24px; text-align: center; transition: transform .28s, box-shadow .28s; }
.adv-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.adv-card i { display: inline-grid; place-items: center; width: 58px; height: 58px; border-radius: 50%; background: var(--ink); color: var(--gold); font-style: normal; font-size: 22px; font-weight: 700; margin-bottom: 16px; }
.adv-card strong { display: block; font-size: 17px; color: var(--ink); margin-bottom: 8px; }
.adv-card span { font-size: 13px; color: var(--muted); line-height: 1.8; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 50px; align-items: start; }
.contact-list li { display: flex; gap: 14px; padding: 15px 0; border-bottom: 1px dashed var(--line); align-items: center; }
.contact-list i.ci { width: 44px; height: 44px; border-radius: 10px; background: var(--ink); flex-shrink: 0; position: relative; }
.contact-list i.ci::before { content: ""; position: absolute; inset: 0; margin: auto; width: 16px; height: 16px; border: 2px solid var(--gold); }
.ci-tel::before { border-radius: 50% !important; transform: rotate(-15deg); }
.ci-mob::before { border-radius: 3px !important; }
.ci-addr::before { border-radius: 10px 10px 10px 2px !important; }
.ci-mail::before { width: 14px !important; transform: rotate(-8deg); }
.ci-time::before { border-radius: 50% !important; }
.contact-list span { display: block; font-size: 12.5px; color: var(--muted); }
.contact-list b { color: var(--ink); font-size: 15px; }
.contact-qr { margin-top: 24px; text-align: center; background: var(--bg); border-radius: var(--radius); padding: 18px; }
.contact-qr img { width: 130px; margin: 0 auto 8px; border-radius: 8px; }
.contact-qr span { font-size: 12.5px; color: var(--muted); }

.contact-form-wrap { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 34px; box-shadow: var(--shadow); }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-size: 14px; color: var(--ink); margin-bottom: 7px; font-weight: 600; }
.form-row label i { color: #d05a4e; font-style: normal; }
.form-row input, .form-row textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; font-size: 14.5px;
  outline: none; transition: border-color .2s, box-shadow .2s; font-family: inherit; background: var(--bg);
}
.form-row input:focus, .form-row textarea:focus { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(201,160,99,.15); background: #fff; }
.form-row textarea { resize: vertical; min-height: 110px; }
.cap-q { color: var(--gold-d); font-weight: 400; }
.honey { position: absolute !important; left: -9999px !important; height: 0; width: 0; opacity: 0; }
.form-err { background: #fdf1ef; border: 1px solid #f3cdc8; color: #c04a3e; border-radius: 8px; padding: 12px 16px; margin-bottom: 18px; font-size: 14px; }
.form-ok { background: #f0f7f1; border: 1px solid #cfe6d2; border-radius: 12px; padding: 34px; text-align: center; }
.form-ok strong { color: #3c7d4b; font-size: 19px; display: block; margin-bottom: 10px; }
.form-ok p { color: #5f7a65; }
.form-tip { font-size: 12px; color: var(--muted); margin-top: 12px; text-align: center; }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .prod-grid, .case-grid { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(5, 1fr); }
}
@media (max-width: 900px) {
  .topbar-slogan { display: none; }
  .header-tel { display: none; }
  .menu-btn { display: block; margin-left: auto; }
  .nav {
    position: fixed; top: 0; right: -280px; width: 280px; height: 100vh; background: var(--ink);
    flex-direction: column; align-items: stretch; padding: 80px 20px 30px; gap: 4px; transition: right .3s; z-index: 200;
  }
  .nav.open { right: 0; box-shadow: -10px 0 40px rgba(0,0,0,.4); }
  .nav > a, .nav-item > a { color: rgba(255,255,255,.85); padding: 13px 10px; border-bottom: 1px solid rgba(255,255,255,.08); border-radius: 0; }
  .nav > a.on, .nav-item > a.on { color: var(--gold); }
  .subnav { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; background: transparent; padding: 0 0 6px 12px; }
  .subnav a { color: rgba(255,255,255,.55); padding: 8px 10px; }
  .slider { height: 420px; }
  .slide-inner h2 { font-size: 34px; letter-spacing: 3px; }
  .about-grid, .contact-grid, .detail-grid { grid-template-columns: 1fr; gap: 36px; }
  .detail-wrap-narrow { grid-template-columns: 1fr; }
  .news-side { position: static; }
  .cat-grid, .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-band { grid-template-columns: repeat(2, 1fr); gap: 26px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .sec-head h2 { font-size: 27px; }
  .news-grid { grid-template-columns: 1fr 1fr; }
  .prod-grid, .prod-grid-3, .prod-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .case-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .about-badge { left: 12px; }
}
@media (max-width: 600px) {
  .section { padding: 56px 0; }
  .slider { height: 360px; }
  .slide-inner h2 { font-size: 27px; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .prod-grid, .prod-grid-3, .prod-grid-4, .news-grid, .case-grid, .case-grid-3 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .cta-inner { flex-direction: column; text-align: center; }
  .float-bar { right: 10px; bottom: 0; left: 0; flex-direction: row; justify-content: space-around; border-radius: 14px 14px 0 0; background: #fff; box-shadow: 0 -6px 24px rgba(20,32,43,.16); }
  .fb-item { width: 25%; height: 56px; border: 0; border-radius: 0; box-shadow: none; }
  .fb-wechat .fb-pop { right: auto; left: 50%; transform: translateX(-50%); bottom: 66px; top: auto; }
  .about-img { height: 300px; }
  .detail-img { height: 260px; }
  .case-detail-img { height: 240px; }
  .contact-form-wrap { padding: 24px 18px; }
  .filter-search input { width: 140px; }
}