/* ============================================================
   023cqdd 主题样式表 — 重庆大地建材有限公司企业官网
   品牌色：工业蓝 #14538c　|　辅助色：工程橙 #e8762c
   中性色：浅灰背景 #f4f6f8　深墨 #22303c
   字体：微软雅黑 / 苹方 / 思源黑体 系统栈
   ============================================================ */
:root {
    --blue: #14538c;
    --blue-dark: #0e3a63;
    --blue-light: #1d6cb5;
    --orange: #e8762c;
    --orange-dark: #cf6220;
    --ink: #22303c;
    --gray: #5b6b78;
    --line: #e3e8ee;
    --bg: #f4f6f8;
    --white: #ffffff;
    --radius: 6px;
    --shadow: 0 6px 24px rgba(14, 58, 99, .08);
    --font: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font); color: var(--ink); font-size: 15px; line-height: 1.75; background: var(--white); }
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; transition: color .2s; }
a:hover { color: var(--orange); }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ---------- 按钮 ---------- */
.btn { display: inline-block; padding: 11px 26px; font-size: 14px; font-family: var(--font); border-radius: var(--radius); border: 1px solid transparent; cursor: pointer; transition: all .2s; line-height: 1.6; }
.btn-primary { background: var(--orange); color: #fff; border-color: var(--orange); }
.btn-primary:hover { background: var(--orange-dark); border-color: var(--orange-dark); color: #fff; }
.btn-outline { background: transparent; color: var(--blue); border-color: var(--blue); }
.btn-outline:hover { background: var(--blue); color: #fff; }

/* ---------- 顶部工具栏 ---------- */
.cqdd-topbar { background: var(--blue-dark); color: rgba(255,255,255,.85); font-size: 13px; }
.cqdd-topbar-in { display: flex; justify-content: space-between; align-items: center; min-height: 38px; flex-wrap: wrap; gap: 4px 16px; }
.cqdd-topbar strong { color: #fff; font-size: 14px; }
.cqdd-topbar-sep { margin: 0 10px; opacity: .4; }
.cqdd-topbar-right a { color: rgba(255,255,255,.85); margin-left: 18px; }
.cqdd-topbar-right a:hover { color: #fff; }

/* ---------- 主导航 ---------- */
.cqdd-navbar { background: var(--white); box-shadow: 0 1px 0 var(--line); position: sticky; top: 0; z-index: 100; transition: box-shadow .2s; }
.cqdd-navbar.is-stuck { box-shadow: 0 4px 18px rgba(14,58,99,.12); }
.cqdd-navbar-in { display: flex; align-items: center; justify-content: space-between; min-height: 76px; gap: 20px; }
.cqdd-logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.cqdd-logo-mark { width: 46px; height: 46px; background: var(--blue); color: #fff; font-size: 19px; font-weight: 700; display: flex; align-items: center; justify-content: center; border-radius: var(--radius); position: relative; }
.cqdd-logo-mark::after { content: ""; position: absolute; right: -5px; bottom: -5px; width: 14px; height: 14px; background: var(--orange); border-radius: 3px; }
.cqdd-logo-text { display: flex; flex-direction: column; line-height: 1.3; }
.cqdd-logo-text strong { font-size: 21px; color: var(--ink); letter-spacing: 2px; }
.cqdd-logo-text small { font-size: 10px; color: var(--gray); letter-spacing: .5px; }
.cqdd-nav { flex: 1; display: flex; justify-content: center; }
.cqdd-menu { display: flex; gap: 6px; }
.cqdd-menu > li > a { display: block; padding: 26px 16px; color: var(--ink); font-size: 16px; font-weight: 500; position: relative; }
.cqdd-menu > li > a:hover, .cqdd-menu > li.current-menu-item > a { color: var(--blue); }
.cqdd-menu > li > a::after { content: ""; position: absolute; left: 16px; right: 16px; bottom: 18px; height: 3px; background: var(--orange); transform: scaleX(0); transition: transform .2s; border-radius: 2px; }
.cqdd-menu > li > a:hover::after, .cqdd-menu > li.current-menu-item > a::after { transform: scaleX(1); }
.cqdd-nav-tools { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.cqdd-icon-btn { background: none; border: none; color: var(--ink); cursor: pointer; padding: 6px; display: flex; }
.cqdd-icon-btn:hover { color: var(--blue); }
.cqdd-consult-btn { background: var(--orange); color: #fff; padding: 9px 18px; border-radius: var(--radius); font-size: 14px; }
.cqdd-consult-btn:hover { background: var(--orange-dark); color: #fff; }
.cqdd-hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.cqdd-hamburger span { width: 24px; height: 2.5px; background: var(--ink); border-radius: 2px; transition: all .25s; }
.cqdd-hamburger.is-open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.cqdd-hamburger.is-open span:nth-child(2) { opacity: 0; }
.cqdd-hamburger.is-open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
.cqdd-search-bar { display: none; border-top: 1px solid var(--line); background: var(--bg); padding: 14px 0; }
.cqdd-search-bar.is-open { display: block; }
.cqdd-search-bar form { display: flex; gap: 10px; }
.cqdd-search-bar input[type="search"] { flex: 1; padding: 10px 14px; border: 1px solid var(--line); border-radius: var(--radius); font-family: var(--font); font-size: 14px; }
.cqdd-search-bar button[type="submit"], .cqdd-search-bar input[type="submit"] { padding: 10px 22px; background: var(--blue); color: #fff; border: none; border-radius: var(--radius); cursor: pointer; font-family: var(--font); }

/* ---------- 面包屑 ---------- */
.cqdd-breadcrumb { background: var(--bg); border-bottom: 1px solid var(--line); font-size: 13px; color: var(--gray); }
.cqdd-breadcrumb-in { padding: 9px 20px; }
.cqdd-breadcrumb a { color: var(--gray); }
.cqdd-breadcrumb a:hover { color: var(--blue); }
.cqdd-breadcrumb-sep { margin: 0 8px; color: #b6c0ca; }
.cqdd-breadcrumb-label { color: var(--ink); }

/* ---------- Hero 轮播 ---------- */
.cqdd-hero { position: relative; height: 560px; overflow: hidden; background: var(--blue-dark); }
.cqdd-hero-slide { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0; transition: opacity .8s ease; display: flex; align-items: center; }
.cqdd-hero-slide.is-active { opacity: 1; }
.cqdd-hero-slide::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10,32,54,.78) 0%, rgba(10,32,54,.45) 55%, rgba(10,32,54,.15) 100%); }
.cqdd-hero-content { position: relative; z-index: 2; width: 100%; }
.cqdd-hero-title { color: #fff; font-size: 46px; font-weight: 700; letter-spacing: 3px; margin-bottom: 14px; animation: cqddUp .7s ease both; }
.cqdd-hero-sub { color: rgba(255,255,255,.88); font-size: 18px; letter-spacing: 1px; margin-bottom: 28px; animation: cqddUp .7s .15s ease both; }
.cqdd-hero-content .btn { animation: cqddUp .7s .3s ease both; }
@keyframes cqddUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
.cqdd-hero-dots { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 3; }
.cqdd-hero-dot { width: 12px; height: 12px; border-radius: 50%; border: 2px solid #fff; background: transparent; cursor: pointer; transition: all .2s; }
.cqdd-hero-dot.is-active { background: var(--orange); border-color: var(--orange); width: 30px; border-radius: 6px; }
.cqdd-hero-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; width: 46px; height: 46px; border: none; background: rgba(255,255,255,.15); color: #fff; font-size: 26px; cursor: pointer; border-radius: 50%; transition: background .2s; line-height: 1; }
.cqdd-hero-arrow:hover { background: var(--orange); }
.cqdd-hero-prev { left: 24px; }
.cqdd-hero-next { right: 24px; }

/* ---------- 通用区块 ---------- */
.cqdd-section { padding: 72px 0; }
.cqdd-section-gray { background: var(--bg); }
.cqdd-section-head { text-align: center; margin-bottom: 44px; }
.cqdd-section-head h2 { font-size: 30px; color: var(--ink); letter-spacing: 2px; position: relative; display: inline-block; padding-bottom: 14px; }
.cqdd-section-head h2::after { content: ""; position: absolute; left: 50%; transform: translateX(-50%); bottom: 0; width: 46px; height: 4px; background: var(--orange); border-radius: 2px; }
.cqdd-section-head p { color: var(--gray); margin-top: 10px; font-size: 15px; }
.cqdd-section-head-left { text-align: left; }
.cqdd-section-head-left h2::after { left: 0; transform: none; }
.cqdd-section-link { color: var(--gray); font-size: 14px; }
.cqdd-section-link:hover { color: var(--blue); }
.cqdd-section-more { text-align: center; margin-top: 40px; }
.cqdd-grid { display: grid; gap: 26px; }
.cqdd-grid-2 { grid-template-columns: repeat(2, 1fr); }
.cqdd-grid-3 { grid-template-columns: repeat(3, 1fr); }
.cqdd-grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 核心业务卡片 ---------- */
.cqdd-biz-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .25s; }
.cqdd-biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.cqdd-biz-img { height: 210px; overflow: hidden; }
.cqdd-biz-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.cqdd-biz-card:hover .cqdd-biz-img img { transform: scale(1.06); }
.cqdd-biz-body { padding: 24px; }
.cqdd-biz-body h3 { font-size: 19px; margin-bottom: 10px; color: var(--ink); }
.cqdd-biz-body p { color: var(--gray); font-size: 14px; margin-bottom: 14px; }
.cqdd-more { color: var(--blue); font-size: 14px; }
.cqdd-more:hover { color: var(--orange); }

/* ---------- 数据展示带 ---------- */
.cqdd-stats { background: var(--blue); background-image: linear-gradient(135deg, var(--blue-dark), var(--blue)); padding: 52px 0; }
.cqdd-stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.cqdd-stat-num { font-size: 44px; font-weight: 700; color: #fff; line-height: 1.1; font-family: var(--font); }
.cqdd-stat-num em { font-style: normal; font-size: 20px; color: var(--orange); margin-left: 2px; }
.cqdd-stat-item p { color: rgba(255,255,255,.8); margin-top: 6px; font-size: 15px; letter-spacing: 1px; }

/* ---------- 产品卡片 ---------- */
.cqdd-product-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .25s; display: flex; flex-direction: column; }
.cqdd-product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.cqdd-product-img { position: relative; height: 200px; overflow: hidden; }
.cqdd-product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.cqdd-product-card:hover .cqdd-product-img img { transform: scale(1.06); }
.cqdd-product-tag { position: absolute; top: 12px; left: 12px; background: var(--orange); color: #fff; font-size: 12px; padding: 3px 12px; border-radius: 20px; }
.cqdd-product-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.cqdd-product-body h3 { font-size: 17px; margin-bottom: 6px; }
.cqdd-product-body h3 a { color: var(--ink); }
.cqdd-product-body h3 a:hover { color: var(--blue); }
.cqdd-product-meta { font-size: 13px; color: var(--blue); margin-bottom: 8px; }
.cqdd-product-desc { font-size: 13.5px; color: var(--gray); margin-bottom: 16px; flex: 1; }
.cqdd-product-body .btn { align-self: flex-start; padding: 8px 20px; font-size: 13px; }

/* ---------- 筛选栏 ---------- */
.cqdd-filter-bar { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; padding: 16px 20px; background: var(--bg); border-radius: var(--radius); }
.cqdd-filter-label { color: var(--gray); font-size: 14px; }
.cqdd-filter-chip { padding: 7px 20px; border: 1px solid var(--line); background: #fff; border-radius: 20px; cursor: pointer; font-family: var(--font); font-size: 14px; color: var(--ink); transition: all .2s; }
.cqdd-filter-chip:hover { border-color: var(--blue); color: var(--blue); }
.cqdd-filter-chip.is-active { background: var(--blue); border-color: var(--blue); color: #fff; }
.cqdd-product-card.is-hidden { display: none; }

/* ---------- 客户 Logo 墙 ---------- */
.cqdd-client-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cqdd-client-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); height: 86px; display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 600; color: var(--gray); letter-spacing: 2px; transition: all .25s; }
.cqdd-client-item:hover { color: var(--blue); border-color: var(--blue); box-shadow: var(--shadow); }

/* ---------- 案例卡片 ---------- */
.cqdd-case-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .25s; }
.cqdd-case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.cqdd-case-img { height: 180px; overflow: hidden; }
.cqdd-case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.cqdd-case-card:hover .cqdd-case-img img { transform: scale(1.06); }
.cqdd-case-body { padding: 18px 20px 22px; }
.cqdd-case-cat { display: inline-block; background: rgba(20,83,140,.1); color: var(--blue); font-size: 12px; padding: 2px 12px; border-radius: 20px; margin-bottom: 8px; }
.cqdd-case-body h3 { font-size: 17px; margin-bottom: 6px; }
.cqdd-case-data { font-size: 13px; color: var(--orange); font-weight: 600; }
.cqdd-case-detail { display: flex; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .25s; }
.cqdd-case-detail:hover { box-shadow: var(--shadow); }
.cqdd-case-detail .cqdd-case-img { width: 42%; height: auto; min-height: 220px; flex-shrink: 0; }
.cqdd-case-detail .cqdd-case-body { padding: 28px; }
.cqdd-case-detail p { color: var(--gray); font-size: 14px; }

/* ---------- 新闻列表 ---------- */
.cqdd-news-list { display: flex; flex-direction: column; gap: 22px; }
.cqdd-news-item { display: flex; gap: 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; transition: all .25s; }
.cqdd-news-item:hover { box-shadow: var(--shadow); }
.cqdd-news-thumb { width: 220px; height: 140px; flex-shrink: 0; overflow: hidden; border-radius: var(--radius); }
.cqdd-news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.cqdd-news-item:hover .cqdd-news-thumb img { transform: scale(1.05); }
.cqdd-news-date { display: inline-block; background: var(--bg); color: var(--gray); font-size: 13px; padding: 2px 14px; border-radius: 20px; margin-bottom: 8px; }
.cqdd-news-meta { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; }
.cqdd-news-cat { display: inline-block; background: rgba(232,118,44,.12); color: var(--orange); font-size: 13px; padding: 2px 14px; border-radius: 20px; }
.cqdd-news-info h3 { font-size: 18px; margin-bottom: 8px; }
.cqdd-news-info h3 a { color: var(--ink); }
.cqdd-news-info h3 a:hover { color: var(--blue); }
.cqdd-news-info p { color: var(--gray); font-size: 14px; }

/* ---------- 分页 ---------- */
.pagination, .page-numbers { display: flex; gap: 8px; justify-content: center; margin-top: 36px; }
.page-numbers a, .page-numbers span { min-width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; color: var(--ink); font-size: 14px; padding: 0 12px; }
.page-numbers a:hover, .page-numbers .current { background: var(--blue); border-color: var(--blue); color: #fff; }

/* ---------- 联系方式模块 ---------- */
.cqdd-contact-band { position: relative; background-size: cover; background-position: center; padding: 64px 0; }
.cqdd-contact-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(14,58,99,.92), rgba(14,58,99,.72)); }
.cqdd-contact-in { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cqdd-contact-text h2 { color: #fff; font-size: 30px; letter-spacing: 2px; margin-bottom: 8px; }
.cqdd-contact-text p { color: rgba(255,255,255,.85); }
.cqdd-contact-actions { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.cqdd-contact-tel { text-align: center; }
.cqdd-contact-tel span { display: block; color: rgba(255,255,255,.75); font-size: 14px; }
.cqdd-contact-tel strong { color: #fff; font-size: 30px; letter-spacing: 1px; }
.cqdd-contact-tel:hover strong { color: var(--orange); }

/* ---------- 页头 Hero ---------- */
.cqdd-page-hero { position: relative; background-size: cover; background-position: center; padding: 84px 0; text-align: center; }
.cqdd-page-hero-in { position: relative; z-index: 2; }
.cqdd-page-hero h1 { color: #fff; font-size: 38px; letter-spacing: 6px; margin-bottom: 10px; }
.cqdd-page-hero p { color: rgba(255,255,255,.85); font-size: 15px; letter-spacing: 2px; }

/* ---------- 关于我们 ---------- */
.cqdd-about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 50px; align-items: center; }
.cqdd-about-text p { color: var(--gray); margin-bottom: 16px; text-align: justify; }
.cqdd-about-text .btn { margin-top: 8px; }
.cqdd-about-img { position: relative; }
.cqdd-about-img img { border-radius: var(--radius); width: 100%; height: 380px; object-fit: cover; }
.cqdd-about-badge { position: absolute; right: -18px; bottom: -18px; background: var(--orange); color: #fff; border-radius: var(--radius); padding: 18px 24px; text-align: center; box-shadow: var(--shadow); }
.cqdd-about-badge strong { display: block; font-size: 34px; line-height: 1.1; }
.cqdd-about-badge span { font-size: 13px; }
.cqdd-timeline { display: flex; flex-direction: column; gap: 0; max-width: 760px; margin: 0 auto; }
.cqdd-timeline-item { display: flex; gap: 26px; padding: 20px 0; border-bottom: 1px dashed var(--line); }
.cqdd-timeline-item:last-child { border-bottom: none; }
.cqdd-timeline-year { flex-shrink: 0; width: 92px; font-size: 24px; font-weight: 700; color: var(--blue); line-height: 1.4; position: relative; }
.cqdd-timeline-year::after { content: ""; position: absolute; right: -14px; top: 12px; width: 9px; height: 9px; background: var(--orange); border-radius: 50%; }
.cqdd-timeline-body h3 { font-size: 17px; margin-bottom: 4px; }
.cqdd-timeline-body p { color: var(--gray); font-size: 14px; }
.cqdd-honor-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 20px; text-align: center; transition: all .25s; }
.cqdd-honor-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.cqdd-honor-icon { width: 46px; height: 46px; margin: 0 auto 14px; background: rgba(20,83,140,.1); color: var(--blue); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 700; }
.cqdd-honor-card h3 { font-size: 16px; }
.cqdd-base-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .25s; }
.cqdd-base-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.cqdd-base-card img { width: 100%; height: 200px; object-fit: cover; }
.cqdd-base-card h3 { font-size: 17px; padding: 16px 20px 4px; }
.cqdd-base-card p { color: var(--gray); font-size: 13.5px; padding: 0 20px 18px; }

/* ---------- 联系我们 ---------- */
.cqdd-contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 24px; text-align: center; transition: all .25s; }
.cqdd-contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.cqdd-contact-icon { width: 54px; height: 54px; margin: 0 auto 16px; background: rgba(20,83,140,.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 24px; }
.cqdd-contact-card h3 { font-size: 18px; margin-bottom: 8px; }
.cqdd-contact-card p { color: var(--gray); font-size: 14px; }
.cqdd-contact-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 40px; align-items: start; }
.cqdd-form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.cqdd-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.cqdd-form-field { margin-bottom: 18px; }
.cqdd-form-field label { display: block; font-size: 14px; color: var(--ink); margin-bottom: 6px; }
.cqdd-form-field label em { color: var(--orange); font-style: normal; }
.cqdd-form-field input, .cqdd-form-field select, .cqdd-form-field textarea { width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: var(--radius); font-family: var(--font); font-size: 14px; color: var(--ink); background: #fff; transition: border-color .2s; }
.cqdd-form-field input:focus, .cqdd-form-field select:focus, .cqdd-form-field textarea:focus { outline: none; border-color: var(--blue); }
.cqdd-form-field .cqdd-field-error { border-color: #d64545; }
.cqdd-form-success { margin-top: 14px; color: #1e7d43; background: rgba(30,125,67,.08); padding: 10px 16px; border-radius: var(--radius); font-size: 14px; }
.cqdd-map-placeholder { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 44px 24px; text-align: center; }
.cqdd-map-pin { font-size: 40px; }
.cqdd-map-placeholder h3 { font-size: 19px; margin: 10px 0 6px; }
.cqdd-map-placeholder p { color: var(--gray); font-size: 14px; }
.cqdd-map-tip { margin-top: 10px; color: var(--blue); font-size: 13px !important; }
.cqdd-contact-extra { margin-top: 20px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; }
.cqdd-contact-extra li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px dashed var(--line); font-size: 14px; color: var(--gray); }
.cqdd-contact-extra li:last-child { border-bottom: none; }
.cqdd-contact-extra li span { color: var(--ink); }

/* ---------- FAQ ---------- */
.cqdd-faq-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: start; }
.cqdd-faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 14px; overflow: hidden; }
.cqdd-faq-q { width: 100%; display: flex; align-items: center; gap: 14px; padding: 18px 22px; background: none; border: none; cursor: pointer; font-family: var(--font); font-size: 16px; color: var(--ink); text-align: left; }
.cqdd-faq-q:hover { color: var(--blue); }
.cqdd-faq-num { flex-shrink: 0; background: var(--blue); color: #fff; font-size: 13px; font-weight: 700; padding: 2px 10px; border-radius: 4px; }
.cqdd-faq-item.is-open .cqdd-faq-num { background: var(--orange); }
.cqdd-faq-arrow { margin-left: auto; font-style: normal; font-size: 22px; color: var(--gray); transition: transform .25s; }
.cqdd-faq-item.is-open .cqdd-faq-arrow { transform: rotate(45deg); color: var(--orange); }
.cqdd-faq-a { padding: 0 22px 20px 62px; color: var(--gray); font-size: 14.5px; }
.cqdd-faq-side { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 100px; }
.cqdd-side-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.cqdd-side-card h4 { font-size: 17px; margin-bottom: 12px; padding-left: 12px; border-left: 4px solid var(--orange); }
.cqdd-side-card ul li { padding: 7px 0; color: var(--gray); font-size: 14px; border-bottom: 1px dashed var(--line); }
.cqdd-side-card ul li:last-child { border-bottom: none; }
.cqdd-side-card ul li::before { content: "✓"; color: var(--orange); margin-right: 8px; }
.cqdd-side-contact { background: var(--blue); border-color: var(--blue); text-align: center; }
.cqdd-side-contact h4 { color: #fff; border-left: none; padding-left: 0; }
.cqdd-side-contact p { color: rgba(255,255,255,.8); font-size: 13.5px; margin-bottom: 8px; }
.cqdd-side-contact strong { display: block; color: #fff; font-size: 26px; margin-bottom: 14px; letter-spacing: 1px; }

/* ---------- 文章详情 ---------- */
.cqdd-article-wrap { display: grid; grid-template-columns: 1fr 300px; gap: 40px; align-items: start; max-width: 1200px; }
.cqdd-article { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; }
.cqdd-article-title { font-size: 26px; line-height: 1.5; margin-bottom: 14px; }
.cqdd-article-meta { color: var(--gray); font-size: 13.5px; display: flex; gap: 22px; flex-wrap: wrap; padding-bottom: 20px; border-bottom: 1px solid var(--line); margin-bottom: 24px; }
.cqdd-article-thumb { margin-bottom: 24px; border-radius: var(--radius); overflow: hidden; }
.cqdd-article-thumb img { width: 100%; max-height: 420px; object-fit: cover; }
.cqdd-article-content p { color: #3d4a56; margin-bottom: 16px; text-align: justify; }
.cqdd-article-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 28px; padding-top: 22px; border-top: 1px solid var(--line); font-size: 14px; }
.cqdd-article-nav span { color: var(--gray); display: block; margin-bottom: 4px; }
.cqdd-article-nav a { color: var(--ink); }
.cqdd-article-nav a:hover { color: var(--blue); }

/* ---------- 产品详情 ---------- */
.cqdd-product-detail { display: grid; grid-template-columns: 1fr 1.1fr; gap: 44px; align-items: start; margin-bottom: 40px; }
.cqdd-product-detail-img img { width: 100%; border-radius: var(--radius); border: 1px solid var(--line); }
.cqdd-product-detail-info h1 { font-size: 28px; margin: 10px 0 12px; }
.cqdd-product-detail-desc { color: var(--gray); margin-bottom: 20px; }
.cqdd-param-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; font-size: 14px; }
.cqdd-param-table th, .cqdd-param-table td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.cqdd-param-table th { background: var(--bg); color: var(--ink); width: 90px; font-weight: 600; }
.cqdd-param-table td { color: var(--gray); }
.cqdd-product-detail-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cqdd-product-detail-content { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; margin-bottom: 44px; }
.cqdd-product-detail-content h2 { font-size: 20px; margin: 22px 0 12px; padding-left: 12px; border-left: 4px solid var(--orange); }
.cqdd-product-detail-content h2:first-child { margin-top: 0; }
.cqdd-product-detail-content p { color: #3d4a56; text-align: justify; }

/* ---------- 页面通用 ---------- */
.cqdd-page-wrap { max-width: 960px; }
.cqdd-page-title { font-size: 30px; text-align: center; margin-bottom: 30px; letter-spacing: 2px; }
.cqdd-page-thumb { margin-bottom: 28px; border-radius: var(--radius); overflow: hidden; }
.cqdd-page-content p { color: #3d4a56; margin-bottom: 16px; text-align: justify; }
.cqdd-privacy h2 { font-size: 19px; margin: 26px 0 10px; color: var(--ink); }
.cqdd-privacy p { color: #3d4a56; margin-bottom: 12px; text-align: justify; }
.cqdd-privacy-date { color: var(--gray); font-size: 13.5px; text-align: center; margin-bottom: 30px; }
.cqdd-empty { text-align: center; color: var(--gray); padding: 50px 0; }

/* ---------- 404 ---------- */
.cqdd-404 { padding: 90px 20px; text-align: center; }
.cqdd-404-code { font-size: 110px; font-weight: 800; color: var(--blue); line-height: 1; letter-spacing: 8px; }
.cqdd-404-code span { color: var(--orange); }
.cqdd-404 h1 { font-size: 22px; margin: 18px 0 8px; }
.cqdd-404 p { color: var(--gray); }
.cqdd-404-actions { display: flex; gap: 14px; justify-content: center; margin: 28px 0 18px; flex-wrap: wrap; }
.cqdd-404-tel a { color: var(--orange); font-weight: 600; }
.cqdd-404-small { padding: 40px 20px; }
.cqdd-404-small .cqdd-empty { padding: 10px 0 24px; }

/* ---------- 页脚 ---------- */
.cqdd-footer { background: var(--blue-dark); color: rgba(255,255,255,.75); }
.cqdd-footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.2fr; gap: 40px; padding: 60px 20px 46px; }
.cqdd-footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.cqdd-footer-logo .cqdd-logo-text strong { color: #fff; }
.cqdd-footer-logo .cqdd-logo-text small { color: rgba(255,255,255,.6); }
.cqdd-footer-about p { font-size: 13.5px; line-height: 1.9; text-align: justify; }
.cqdd-footer-credit { margin-top: 10px; font-size: 12.5px !important; color: rgba(255,255,255,.5) !important; }
.cqdd-footer-col h4 { color: #fff; font-size: 17px; margin-bottom: 18px; padding-bottom: 12px; position: relative; letter-spacing: 1px; }
.cqdd-footer-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 34px; height: 3px; background: var(--orange); border-radius: 2px; }
.cqdd-footer-links li { padding: 5px 0; }
.cqdd-footer-links a { color: rgba(255,255,255,.75); font-size: 14px; }
.cqdd-footer-links a:hover { color: #fff; padding-left: 6px; }
.cqdd-footer-contact li { display: flex; gap: 10px; padding: 5px 0; font-size: 14px; }
.cqdd-footer-contact li span { color: rgba(255,255,255,.5); flex-shrink: 0; }
.cqdd-footer-contact li strong { color: rgba(255,255,255,.9); font-weight: 500; }
.cqdd-footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 18px 0; }
.cqdd-footer-bottom-in { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 13px; }
.cqdd-footer-bottom-links a { color: rgba(255,255,255,.75); }
.cqdd-footer-bottom-links a:hover { color: #fff; }
.cqdd-footer-bottom-links span { margin: 0 10px; opacity: .35; }

/* ---------- 回到顶部 ---------- */
.cqdd-back-top { position: fixed; right: 26px; bottom: 26px; width: 46px; height: 46px; border: none; border-radius: 50%; background: var(--blue); color: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transition: all .25s; z-index: 99; }
.cqdd-back-top.is-show { opacity: 1; visibility: visible; }
.cqdd-back-top:hover { background: var(--orange); }

/* ---------- 响应式：平板 ---------- */
@media (max-width: 992px) {
    .cqdd-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .cqdd-grid-3 { grid-template-columns: repeat(2, 1fr); }
    .cqdd-about-grid, .cqdd-contact-grid, .cqdd-faq-grid, .cqdd-article-wrap, .cqdd-product-detail { grid-template-columns: 1fr; }
.cqdd-article-side { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .cqdd-faq-side { position: static; }
    .cqdd-footer-grid { grid-template-columns: 1fr 1fr; }
    .cqdd-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .cqdd-hero { height: 460px; }
    .cqdd-hero-title { font-size: 36px; }
}

/* ---------- 响应式：手机 ---------- */
@media (max-width: 768px) {
    .cqdd-topbar-right { display: none; }
    .cqdd-topbar-in { justify-content: center; }
    .cqdd-nav { position: fixed; top: 0; right: -100%; width: 78%; max-width: 320px; height: 100vh; background: #fff; box-shadow: -8px 0 30px rgba(0,0,0,.15); transition: right .3s; z-index: 200; padding: 80px 0 30px; overflow-y: auto; justify-content: flex-start; }
    .cqdd-nav.is-open { right: 0; }
    .cqdd-menu { flex-direction: column; width: 100%; gap: 0; }
    .cqdd-menu > li > a { padding: 14px 28px; border-bottom: 1px solid var(--line); }
    .cqdd-menu > li > a::after { display: none; }
    .cqdd-hamburger { display: flex; z-index: 210; position: relative; }
    .cqdd-consult-btn { display: none; }
    .cqdd-navbar-in { min-height: 64px; }
    .cqdd-logo-text strong { font-size: 18px; }
    .cqdd-logo-mark { width: 40px; height: 40px; font-size: 16px; }
    .cqdd-hero { height: 420px; }
    .cqdd-hero-title { font-size: 28px; letter-spacing: 1px; }
    .cqdd-hero-sub { font-size: 15px; }
    .cqdd-hero-arrow { display: none; }
    .cqdd-section { padding: 52px 0; }
    .cqdd-section-head h2 { font-size: 24px; }
    .cqdd-grid-2, .cqdd-grid-3 { grid-template-columns: 1fr; }
    .cqdd-news-item { flex-direction: column; }
    .cqdd-news-thumb { width: 100%; height: 190px; }
    .cqdd-client-wall { grid-template-columns: repeat(2, 1fr); }
    .cqdd-case-detail { flex-direction: column; }
    .cqdd-case-detail .cqdd-case-img { width: 100%; min-height: 200px; }
    .cqdd-form-row { grid-template-columns: 1fr; }
    .cqdd-article { padding: 24px 20px; }
    .cqdd-article-side { grid-template-columns: 1fr; }
    .cqdd-footer-grid { grid-template-columns: 1fr; gap: 30px; padding: 44px 20px 34px; }
    .cqdd-footer-bottom-in { justify-content: center; text-align: center; }
    .cqdd-page-hero { padding: 60px 0; }
    .cqdd-page-hero h1 { font-size: 28px; letter-spacing: 3px; }
    .cqdd-about-badge { right: 10px; bottom: -14px; padding: 12px 18px; }
    .cqdd-about-badge strong { font-size: 26px; }
    .cqdd-404-code { font-size: 80px; }
    .cqdd-stat-num { font-size: 34px; }
    .cqdd-contact-in { flex-direction: column; text-align: center; }
    .cqdd-contact-actions { justify-content: center; }
}
@media (max-width: 480px) {
    .cqdd-grid-4 { grid-template-columns: 1fr; }
    .cqdd-client-wall { grid-template-columns: 1fr 1fr; gap: 12px; }
    .cqdd-client-item { font-size: 15px; height: 70px; }
    .cqdd-hero { height: 360px; }
    .cqdd-param-table th { width: 70px; }
}