/* =====================================================================
   企业产品展示官网 - 全局样式
   设计参考：小米有品（极简、留白、清晰层级）
   主色：#ff6a00（活力橙）
   ===================================================================== */

/* ---------- 变量 ---------- */
:root {
    --primary: #ff6700;
    --primary-dark: #f25b00;
    --text: #333;
    --text-sub: #757575;
    --text-light: #b0b0b0;
    --border: #e0e0e0;
    --bg: #fff;
    --bg-gray: #f5f5f5;
    --radius: 2px;
    --shadow: 0 2px 12px rgba(0, 0, 0, .06);
    --shadow-hover: 0 6px 20px rgba(0, 0, 0, .12);
    --topbar-h: 32px;
    --header-h: 64px;
    --container: 1226px;
    --trans: all .25s ease;
}

/* ---------- 重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    padding-top: calc(var(--topbar-h) + var(--header-h));
}
/* 未配置任何顶栏信息项时，不预留顶部信息条高度 */
body.no-topbar { padding-top: var(--header-h); }
a { color: inherit; text-decoration: none; transition: var(--trans); }
img { max-width: 100%; display: block; border: 0; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
input, textarea, select { font-family: inherit; font-size: 14px; outline: none; }
h1, h2, h3, h4 { font-weight: 500; line-height: 1.3; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 16px; }
.mobile-only { display: none !important; }

/* ---------- 通用按钮 ---------- */
.btn-primary {
    display: inline-block;
    padding: 12px 32px;
    background: var(--primary);
    color: #fff;
    border-radius: 4px;
    font-size: 15px;
    text-align: center;
    transition: var(--trans);
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-mini {
    display: inline-block;
    font-size: 13px;
    color: var(--primary);
    transition: var(--trans);
}
.btn-mini::after { content: ' ›'; }
.product-card:hover .btn-mini { color: var(--primary-dark); }
.btn-ghost {
    padding: 12px 24px;
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-sub);
    background: #fff;
}
.btn-ghost:hover { border-color: #ccc; color: var(--text); }

/* =====================================================================
   顶部导航
   ===================================================================== */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
}

/* ---------- 深色顶部信息条 ---------- */
.topbar {
    height: var(--topbar-h);
    background: #333;
    color: #b0b0b0;
    font-size: 12px;
}
.topbar-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 18px;
}
.topbar a { color: #b0b0b0; }
.topbar a:hover { color: #fff; }
.topbar .topbar-sep { color: #5c5c5c; }

/* ---------- 白色主导航区 ---------- */
.header-main {
    position: relative;
    height: var(--header-h);
    border-bottom: 1px solid var(--border);
}
/* 毛玻璃背景放在伪元素上。
   注意：不能直接给祖先元素加 backdrop-filter —— 那会让它成为内部
   position:fixed 元素（移动端抽屉）的包含块，导致抽屉无法相对视口定位。 */
.header-main::before {
    content: '';
    position: absolute; inset: 0; z-index: -1;
    background: rgba(255, 255, 255, .96);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
}
.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 22px;
}
.logo { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.logo img { height: 34px; width: auto; }
.logo img + .logo-text { display: none; }   /* 已有 Logo 图时不再重复显示站名 */
.logo-text { font-size: 22px; font-weight: 600; color: var(--primary); white-space: nowrap; letter-spacing: .5px; }

.main-nav { display: flex; align-items: center; gap: 2px; flex: 1; }
.main-nav > a, .main-nav .nav-item > a {
    display: block;
    padding: 8px 14px;
    color: var(--text);
    font-size: 15px;
    white-space: nowrap;
    transition: var(--trans);
}
.main-nav > a:hover, .main-nav .nav-item > a:hover { color: var(--primary); }
.main-nav > a.active, .main-nav .nav-item > a.active { color: var(--primary); }
.nav-item { position: relative; }
.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 150px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-hover);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: var(--trans);
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a { display: block; padding: 9px 20px; font-size: 14px; color: var(--text-sub); }
.dropdown a:hover { color: var(--primary); background: var(--bg-gray); }

.header-actions { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.search-toggle { font-size: 17px; color: var(--text-sub); display: none; }
.search-form {
    display: flex; align-items: center;
    height: 38px; width: 240px;
    border: 1px solid var(--border);
    transition: var(--trans);
}
.search-form:focus-within { border-color: var(--primary); }
.search-form input {
    flex: 1; min-width: 0; height: 100%; padding: 0 12px;
    border: 0; background: transparent; color: var(--text);
}
.search-form input::placeholder { color: var(--text-light); }
.search-form button {
    width: 42px; height: 100%; flex-shrink: 0;
    border-left: 1px solid var(--border);
    color: var(--text-sub); font-size: 15px;
    transition: var(--trans);
}
.search-form button:hover { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ---------- 右侧悬浮工具条：当前页二维码 + 返回顶部 ---------- */
.side-tools {
    position: fixed; right: 12px; bottom: 80px; z-index: 70;
    display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.side-btn {
    width: 46px; height: 46px;
    display: flex; align-items: center; justify-content: center;
    background: #fff; color: var(--text-sub); font-size: 18px;
    border: 1px solid var(--border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .06);
    transition: var(--trans);
}
.side-btn:hover { color: var(--primary); border-color: var(--primary); }

/* 二维码弹层：点击后在按钮左侧展开 */
.qr-entry { position: relative; }
.qr-pop {
    position: absolute; right: calc(100% + 10px); bottom: 0;
    width: 150px; padding: 10px;
    background: #fff;
    border: 1px solid var(--border);
    box-shadow: 0 6px 20px rgba(0, 0, 0, .12);
    text-align: center;
    opacity: 0; visibility: hidden; transform: translateX(6px);
    transition: var(--trans);
}
.qr-pop.show { opacity: 1; visibility: visible; transform: none; }
.qr-pop img { width: 128px; height: 128px; display: block; margin: 0 auto 6px; }
.qr-pop p { font-size: 12px; color: var(--text-sub); }

.lang-toggle {
    display: flex; align-items: center; gap: 4px;
    padding: 6px 8px;
    font-size: 13px;
    color: var(--text-sub);
    white-space: nowrap;
}
.lang-toggle:hover { color: var(--primary); }
.btn-inquiry {
    padding: 9px 22px;
    background: var(--primary);
    color: #fff !important;
    border-radius: 2px;
    font-size: 14px;
    white-space: nowrap;
    transition: var(--trans);
}
.btn-inquiry:hover { background: var(--primary-dark); }
.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--trans); }
.nav-mask { display: none; position: fixed; inset: 0; background: rgba(0, 0, 0, .45); z-index: 998; }
.nav-mask.show { display: block; }

/* =====================================================================
   首页首屏：左侧分类栏 + 大 Banner
   ===================================================================== */
.hero { padding-top: 20px; }
.hero-inner { display: flex; }

/* 左侧分类导航 */
.hero-cats {
    width: 234px; flex-shrink: 0;
    background: #fff;
    padding: 10px 0;
    overflow: hidden;
}
.hero-cats a {
    display: flex; align-items: center; gap: 4px;
    height: 34px; padding: 0 16px;
    font-size: 13px; color: var(--text);
    white-space: nowrap; overflow: hidden;
    transition: var(--trans);
}
.hero-cats a .hc-sub { color: var(--text-light); overflow: hidden; text-overflow: ellipsis; }
.hero-cats a:hover { background: var(--primary); color: #fff; }
.hero-cats a:hover .hc-sub { color: rgba(255, 255, 255, .85); }

/* 右侧 Banner：作为弹性容器，让轮播图始终与左侧分类栏等高。
   否则分类较多时容器被拉高、而轮播图仍是固定高度，
   指示点与箭头会跑到图片之外（浅色底图上看起来像「没显示」）。 */
.hero-banner {
    position: relative; flex: 1; min-width: 0; overflow: hidden;
    display: flex;
}
.banner-slider { position: relative; flex: 1 1 auto; min-width: 0; min-height: 240px; }
.banner-slide {
    position: absolute; inset: 0;
    background-size: cover;
    background-position: center;
    background-color: #eef1f5;
    opacity: 0;
    visibility: hidden;
    transition: opacity .7s ease, visibility .7s ease;
    display: flex;
    align-items: center;
}
.banner-slide.active { opacity: 1; visibility: visible; }
.banner-slide::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(0, 0, 0, .5) 0%, rgba(0, 0, 0, .15) 60%, rgba(0, 0, 0, 0) 100%);
}
.banner-inner { position: relative; z-index: 2; color: #fff; padding: 0 40px; }
.banner-inner h2 { font-size: 30px; font-weight: 600; margin-bottom: 10px; letter-spacing: .5px; }
.banner-inner p { font-size: 15px; opacity: .92; margin-bottom: 18px; max-width: 520px; }
.banner-btn {
    display: inline-block;
    padding: 8px 24px;
    border: 1px solid rgba(255, 255, 255, .85);
    color: #fff;
    border-radius: 2px;
    font-size: 14px;
}
.banner-btn:hover { background: #fff; color: var(--text); }
.banner-arrow {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 40px; height: 40px; border-radius: 50%;
    z-index: 3;
    color: #fff; font-size: 22px; line-height: 1;
    background: rgba(0, 0, 0, .28);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: var(--trans);
}
.banner-arrow.prev { left: 12px; }
.banner-arrow.next { right: 12px; }
.hero-banner:hover .banner-arrow { opacity: 1; }
.banner-arrow:hover { background: rgba(0, 0, 0, .55); }
.banner-dots {
    position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
    display: flex; gap: 8px; z-index: 3;
}
.banner-dots span {
    width: 8px; height: 8px; border-radius: 50%;
    background: rgba(255, 255, 255, .55);
    box-shadow: 0 0 4px rgba(0, 0, 0, .4);   /* 浅色底图上依然可辨 */
    cursor: pointer; transition: var(--trans);
}
.banner-dots span:hover { background: #fff; }
.banner-dots span.active { background: #fff; }

/* =====================================================================
   圆形快捷入口
   ===================================================================== */
.quick-nav { background: #fff; margin-top: 14px; padding: 22px 0; }
.quick-inner { display: flex; justify-content: center; }
.quick-item {
    flex: 1; max-width: 200px;
    display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.quick-icon {
    width: 56px; height: 56px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; font-weight: 600; color: #fff;
    background: linear-gradient(135deg, #ff9a44, var(--primary));
    transition: var(--trans);
}
.quick-item:hover .quick-icon { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(255, 103, 0, .35); }
.quick-label { font-size: 14px; color: var(--text); }
.quick-item:hover .quick-label { color: var(--primary); }
.quick-item:nth-child(2) .quick-icon { background: linear-gradient(135deg, #7ab8ff, #3d7eff); }
.quick-item:nth-child(3) .quick-icon { background: linear-gradient(135deg, #ff8f8f, #f04a4a); }
.quick-item:nth-child(4) .quick-icon { background: linear-gradient(135deg, #8fd18f, #3ea93e); }
.quick-item:nth-child(5) .quick-icon { background: linear-gradient(135deg, #c79cff, #8a5cf0); }

/* =====================================================================
   通用 Section
   ===================================================================== */
.section { padding: 40px 0; }
.section:nth-child(even) { background: var(--bg-gray); }
.section-head {
    display: flex; align-items: baseline; gap: 12px;
    margin-bottom: 22px;
}
.section-head h2 { font-size: 22px; font-weight: 500; color: #333; letter-spacing: .5px; }
.section-head .section-sub { font-size: 13px; color: var(--text-light); }
.section-more { margin-left: auto; font-size: 13px; color: var(--text-sub); white-space: nowrap; }
.section-more:hover { color: var(--primary); }

/* ---------- 产品卡片网格（细边框表格化，贴合小米有品） ---------- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--border);
    border-left: 1px solid var(--border);
}
.product-card {
    position: relative;
    background: #fff;
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 14px;
    display: flex;
    flex-direction: column;
    transition: var(--trans);
}
.product-card:hover { box-shadow: 0 3px 14px rgba(0, 0, 0, .14); z-index: 1; }
.product-img { position: relative; padding-top: 100%; background: #fff; overflow: hidden; }
.product-img img {
    position: absolute; top: 0; left: 0;
    width: 100%; height: 100%; object-fit: contain;
    transition: transform .4s ease;
}
.product-card:hover .product-img img { transform: scale(1.03); }
.tag-hot, .tag-rec {
    position: absolute; top: 0; left: 0;
    padding: 2px 8px;
    font-size: 11px; color: #fff; letter-spacing: .5px;
}
.tag-hot { background: var(--primary); }
.tag-rec { background: #4c9aff; left: auto; right: 0; }
.product-info { padding: 12px 2px 0; flex: 1; }
.product-name {
    font-size: 14px; font-weight: 400; color: #333; line-height: 1.5; margin-bottom: 6px;
    min-height: 42px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.product-model { font-size: 12px; color: var(--text-light); margin-bottom: 6px; }
.product-desc {
    font-size: 12px; color: var(--text-light); line-height: 1.5;
    display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}
.product-foot { padding: 10px 2px 0; }

/* =====================================================================
   企业优势
   ===================================================================== */
.advantage-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--border); border-left: 1px solid var(--border);
}
.advantage-item {
    background: #fff;
    border-right: 1px solid var(--border); border-bottom: 1px solid var(--border);
    padding: 30px 20px; text-align: center; transition: var(--trans);
}
.advantage-item:hover { box-shadow: 0 3px 14px rgba(0, 0, 0, .14); }
.advantage-icon {
    width: 56px; height: 56px; line-height: 56px;
    margin: 0 auto 18px; border-radius: 50%;
    font-size: 22px; font-weight: 600; color: #fff;
    background: linear-gradient(135deg, #ff9a44, var(--primary));
}
.adv-icon-2 { background: linear-gradient(135deg, #6dd5fa, #4c9aff); }
.adv-icon-3 { background: linear-gradient(135deg, #a8e063, #56ab2f); }
.adv-icon-4 { background: linear-gradient(135deg, #f78ca0, #f9748f); }
.advantage-item h3 { font-size: 17px; margin-bottom: 10px; }
.advantage-item p { font-size: 13.5px; color: var(--text-sub); line-height: 1.6; }

/* =====================================================================
   页面 Banner / 面包屑
   ===================================================================== */
.page-banner { background: var(--bg-gray); padding: 30px 0 24px; }
.page-banner h1 { font-size: 24px; font-weight: 500; margin-bottom: 8px; }
.breadcrumb { font-size: 13px; color: var(--text-sub); display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb em { font-style: normal; color: var(--text); }
.detail-breadcrumb { padding: 20px 0 0; }

/* =====================================================================
   产品列表页
   ===================================================================== */
.list-layout { display: flex; gap: 28px; padding: 32px 16px 64px; }
.list-sidebar { width: 190px; flex-shrink: 0; }
.sidebar-title { font-size: 16px; font-weight: 500; padding-bottom: 12px; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.sidebar-cats > li > a {
    display: block; padding: 9px 12px; font-size: 14px; color: var(--text-sub);
    border-radius: 4px; margin-bottom: 2px;
}
.sidebar-cats > li > a:hover { color: var(--primary); background: var(--bg-gray); }
.sidebar-cats > li.active > a { color: var(--primary); background: #fff5ee; font-weight: 500; }
.sidebar-sub { padding-left: 12px; margin-bottom: 4px; }
.sidebar-sub li a { display: block; padding: 6px 12px; font-size: 13px; color: var(--text-light); border-radius: 4px; }
.sidebar-sub li a:hover { color: var(--primary); }
.sidebar-sub li.active a { color: var(--primary); }

.list-content { flex: 1; min-width: 0; }
.list-toolbar {
    display: flex; align-items: center; justify-content: space-between;
    padding-bottom: 16px; margin-bottom: 20px; border-bottom: 1px solid var(--border);
}
.list-count { font-size: 13.5px; color: var(--text-sub); }
.list-sort { display: flex; gap: 18px; }
.list-sort a { font-size: 13.5px; color: var(--text-sub); }
.list-sort a:hover, .list-sort a.active { color: var(--primary); }
.list-content .product-grid { grid-template-columns: repeat(3, 1fr); }
.empty-box { padding: 90px 0; text-align: center; color: var(--text-light); font-size: 15px; }

.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 42px; }
.pagination a, .pagination span {
    min-width: 36px; height: 36px; line-height: 34px; text-align: center;
    border: 1px solid var(--border); border-radius: 4px; padding: 0 8px;
    font-size: 14px; color: var(--text-sub);
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .active { background: var(--primary); border-color: var(--primary); color: #fff; }
.pagination .dots { border: 0; }
.filter-toggle {
    position: fixed; bottom: 76px; right: 16px; z-index: 60;
    padding: 11px 20px; background: var(--primary); color: #fff;
    border-radius: 22px; font-size: 14px; box-shadow: 0 4px 16px rgba(255, 106, 0, .4);
}

/* =====================================================================
   产品详情页
   ===================================================================== */
.detail-layout { display: flex; gap: 44px; padding: 24px 16px 40px; }
.detail-gallery { width: 480px; flex-shrink: 0; }
.gallery-main {
    position: relative; width: 100%; padding-top: 100%;
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
}
.gallery-main img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.gallery-arrow {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 36px; height: 36px; border-radius: 50%;
    background: rgba(0, 0, 0, .32); color: #fff; font-size: 20px; line-height: 1;
    display: flex; align-items: center; justify-content: center; opacity: 0; transition: var(--trans);
}
.gallery-main:hover .gallery-arrow { opacity: 1; }
.gallery-arrow.prev { left: 12px; }
.gallery-arrow.next { right: 12px; }
.gallery-arrow:hover { background: rgba(0, 0, 0, .55); }
.gallery-thumbs { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.thumb {
    width: 72px; height: 72px; border: 2px solid var(--border); border-radius: 6px;
    overflow: hidden; cursor: pointer; transition: var(--trans);
}
.thumb.active, .thumb:hover { border-color: var(--primary); }
.thumb img { width: 100%; height: 100%; object-fit: cover; }

.detail-info { flex: 1; min-width: 0; padding-top: 6px; }
.detail-name { font-size: 26px; font-weight: 500; line-height: 1.35; margin-bottom: 14px; }
.detail-model { font-size: 14px; color: var(--text-sub); margin-bottom: 14px; }
.detail-model span { color: var(--text-light); }
.detail-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.detail-tags span {
    padding: 3px 12px; font-size: 12.5px; color: var(--primary);
    background: #fff5ee; border-radius: 12px;
}
.detail-summary { font-size: 14.5px; color: var(--text-sub); line-height: 1.8; margin-bottom: 28px; padding: 16px; background: var(--bg-gray); border-radius: var(--radius); }
.btn-inquiry-large { width: 100%; max-width: 280px; padding: 14px 32px; font-size: 16px; border-radius: 4px; }
.detail-highlights { display: flex; gap: 22px; margin-top: 22px; flex-wrap: wrap; }
.detail-highlights li { font-size: 13.5px; color: var(--text-sub); position: relative; padding-left: 18px; }
.detail-highlights li::before {
    content: '✓'; position: absolute; left: 0; color: var(--primary); font-size: 13px;
}

.detail-tabs-wrap { padding: 0 16px 64px; }
.detail-tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 28px; overflow-x: auto; }
.detail-tabs button {
    position: relative; padding: 14px 26px; font-size: 16px; color: var(--text-sub);
    white-space: nowrap; transition: var(--trans);
}
.detail-tabs button.active { color: var(--primary); }
.detail-tabs button.active::after {
    content: ''; position: absolute; left: 26px; right: 26px; bottom: -1px; height: 2px; background: var(--primary);
}
.detail-tab-panel { display: none; }
.detail-tab-panel.active { display: block; animation: fadeIn .3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.spec-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 30px; }
.spec-list li { padding: 10px 0 10px 20px; font-size: 14px; color: var(--text-sub); border-bottom: 1px dashed var(--border); position: relative; }
.spec-list li::before { content: ''; position: absolute; left: 4px; top: 18px; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }

.param-table { width: 100%; border-collapse: collapse; max-width: 720px; }
.param-table tr { border-bottom: 1px solid var(--border); }
.param-table th {
    width: 180px; text-align: left; padding: 14px 20px; background: var(--bg-gray);
    font-weight: 400; color: var(--text-sub); font-size: 14px;
}
.param-table td { padding: 14px 20px; font-size: 14px; }

.rich-content { font-size: 14.5px; line-height: 1.9; color: var(--text-sub); }
.rich-content h3 { font-size: 19px; color: var(--text); margin: 26px 0 12px; font-weight: 500; }
.rich-content h3:first-child { margin-top: 0; }
.rich-content p { margin-bottom: 14px; }
.rich-content img { border-radius: var(--radius); margin: 16px 0; }
.rich-content ul { list-style: disc; padding-left: 22px; margin-bottom: 14px; }
.rich-content ol { list-style: decimal; padding-left: 22px; margin-bottom: 14px; }

.section-related { background: var(--bg-gray); }

/* 底部固定询价栏 */
.detail-fixed-bar {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
    background: rgba(255, 255, 255, .97);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border);
    box-shadow: 0 -2px 14px rgba(0, 0, 0, .06);
    transform: translateY(100%);
    transition: transform .3s ease;
}
.detail-fixed-bar.show { transform: translateY(0); }
.detail-fixed-inner {
    max-width: var(--container); margin: 0 auto; padding: 12px 16px;
    display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.fixed-info { display: flex; flex-direction: column; min-width: 0; }
.fixed-name { font-size: 15px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fixed-model { font-size: 12.5px; color: var(--text-light); }
.detail-fixed-inner .btn-inquiry-large { width: auto; max-width: none; margin: 0; flex-shrink: 0; }

/* =====================================================================
   单页内容
   ===================================================================== */
.page-layout { display: flex; gap: 32px; padding: 36px 16px 72px; }
.page-sidebar { width: 180px; flex-shrink: 0; }
.page-sidebar ul { border-left: 2px solid var(--border); }
.page-sidebar li a { display: block; padding: 12px 20px; font-size: 14.5px; color: var(--text-sub); border-left: 2px solid transparent; margin-left: -2px; }
.page-sidebar li a:hover { color: var(--primary); }
.page-sidebar li.active a { color: var(--primary); border-left-color: var(--primary); font-weight: 500; }
.page-content { flex: 1; min-width: 0; }

.contact-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 36px; }
.contact-card { padding: 24px; background: var(--bg-gray); border-radius: var(--radius); }
.contact-card .cc-icon { font-size: 24px; margin-bottom: 10px; }
.contact-card h4 { font-size: 15px; margin-bottom: 8px; }
.contact-card p { font-size: 13.5px; color: var(--text-sub); }

/* =====================================================================
   页脚
   ===================================================================== */
.site-footer { background: #fff; border-top: 1px solid var(--border); padding-top: 52px; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1.4fr 1fr; gap: 34px; padding-bottom: 42px; }
.footer-logo { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.footer-logo img { height: 32px; }
.footer-logo img + span { display: none; }   /* 已有 Logo 图时不再重复显示站名 */
.footer-logo span { font-size: 18px; font-weight: 600; }
.footer-desc { font-size: 13.5px; color: var(--text-sub); line-height: 1.7; }
.footer-col h4 { font-size: 15px; margin-bottom: 18px; font-weight: 500; }
.footer-col ul li { margin-bottom: 11px; font-size: 13.5px; color: var(--text-sub); }
.footer-col ul li a:hover { color: var(--primary); }
.footer-contact li span { color: var(--text-light); }
.qr-box { width: 108px; height: 108px; background: var(--bg-gray); border-radius: 6px; overflow: hidden; padding: 6px; }
.qr-box img { width: 100%; height: 100%; object-fit: contain; }
.qr-tip { font-size: 12.5px; color: var(--text-light); margin-top: 8px; }
.footer-bottom { border-top: 1px solid var(--border); padding: 18px 0; }
.footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.footer-bottom p { font-size: 12.5px; color: var(--text-light); }
.footer-bottom a:hover { color: var(--primary); }

/* ---------- 返回顶部（位于右侧悬浮工具条最下方） ---------- */
.back-top { font-size: 18px; }

/* =====================================================================
   询价弹窗
   ===================================================================== */
.modal-mask {
    position: fixed; inset: 0; z-index: 2000;
    background: rgba(0, 0, 0, .5);
    display: flex; align-items: center; justify-content: center;
    padding: 20px; opacity: 0; visibility: hidden; transition: var(--trans);
    overflow-y: auto;
}
.modal-mask.show { opacity: 1; visibility: visible; }
.modal-box {
    position: relative; width: 100%; max-width: 560px;
    background: #fff; border-radius: 10px; padding: 32px 34px;
    transform: translateY(20px) scale(.98); transition: var(--trans);
    max-height: 92vh; overflow-y: auto;
}
.modal-mask.show .modal-box { transform: none; }
.modal-close {
    position: absolute; top: 14px; right: 18px;
    font-size: 26px; line-height: 1; color: var(--text-light);
}
.modal-close:hover { color: var(--text); }
.modal-title { font-size: 21px; margin-bottom: 22px; text-align: center; }
.form-row { display: flex; gap: 16px; }
.form-group { flex: 1; margin-bottom: 16px; }
.form-group label { display: block; font-size: 13.5px; color: var(--text-sub); margin-bottom: 7px; }
.form-group label i { color: var(--primary); font-style: normal; }
.form-group input, .form-group textarea {
    width: 100%; padding: 10px 13px; border: 1px solid var(--border);
    border-radius: 6px; transition: var(--trans); background: #fff; resize: vertical;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(255, 106, 0, .1); }
.readonly-input { background: var(--bg-gray) !important; color: var(--text-sub); }
.form-group input.error, .form-group textarea.error { border-color: #ff4d4f; }
.form-actions { display: flex; gap: 14px; margin-top: 8px; }
.form-actions .btn-primary, .form-actions .btn-ghost { flex: 1; }
.form-msg { margin-top: 14px; font-size: 13.5px; text-align: center; min-height: 20px; }
.form-msg.ok { color: #52c41a; }
.form-msg.err { color: #ff4d4f; }

/* =====================================================================
   响应式适配
   ===================================================================== */
@media (max-width: 1100px) {
    .product-grid { grid-template-columns: repeat(3, 1fr); }
    .advantage-grid { grid-template-columns: repeat(2, 1fr); }
    .detail-layout { gap: 30px; }
    .detail-gallery { width: 400px; }
    .footer-top { grid-template-columns: 1fr 1fr; }
    /* 中等宽度需要收紧间距：操作区里多了二维码入口，
       若沿用桌面间距会把导航挤出容器（约 845px 时最明显） */
    .header-inner { gap: 14px; }
    .main-nav { min-width: 0; }
    .main-nav > a, .main-nav .nav-item > a { padding: 8px 9px; font-size: 14px; }
    .header-actions { gap: 10px; }
}

@media (max-width: 992px) {
    :root { --header-h: 58px; }
    .banner-slider { min-height: 200px; }
    .banner-inner h2 { font-size: 22px; }
    .banner-inner p { font-size: 13.5px; }
    .hero-cats { width: 200px; }
    .quick-item { max-width: 160px; }
    .search-form { display: none; }
    .search-toggle { display: block; }
    .detail-layout { flex-direction: column; }
    .detail-gallery { width: 100%; max-width: 460px; margin: 0 auto; }
    .section { padding: 32px 0; }
    .section-head h2 { font-size: 20px; }
}

/* ---------- 移动端 ---------- */
@media (max-width: 768px) {
    :root { --topbar-h: 0; }
    .topbar { display: none; }
    body { padding-top: var(--header-h); }
    .mobile-only { display: block !important; }

    /* 汉堡导航 */
    .menu-toggle { display: flex; }
    /* .main-nav 变为 fixed 后脱离文档流，需把右侧操作区推到最右 */
    .header-actions { margin-left: auto; }

    /* 遮罩层：置于顶栏之下。
       抽屉 .main-nav 是 .site-header 的后代，而 position:fixed 会让 header
       形成独立层叠上下文，因此抽屉无论设多大 z-index 都无法超过 header 本身；
       所以这里把遮罩放到 header(1000) 之下，抽屉才能盖在遮罩之上。 */
    .nav-mask { z-index: 990; }

    /* 右侧抽屉：用 transform 位移，避免因包含块问题导致定位错乱 */
    .main-nav {
        position: fixed; top: 0; right: 0; bottom: 0;
        width: 80vw; max-width: 300px; min-width: 240px;
        height: 100%;
        background: #fff;
        flex-direction: column; align-items: stretch; gap: 0;
        padding: 0 0 24px;
        z-index: 1201;
        transform: translateX(100%);
        transition: transform .3s ease;
        overflow-y: auto; -webkit-overflow-scrolling: touch;
        box-shadow: -6px 0 24px rgba(0, 0, 0, .12);
        flex: none;
    }
    .main-nav.open { transform: translateX(0); }
    body.nav-open { overflow: hidden; }

    /* 抽屉顶部：站名 + 关闭按钮 */
    .drawer-head {
        display: flex !important; align-items: center; justify-content: space-between;
        padding: 0 18px; height: var(--header-h);
        border-bottom: 1px solid var(--border);
        position: sticky; top: 0; background: #fff; z-index: 2;
    }
    .drawer-title { font-size: 16px; font-weight: 600; }
    .drawer-close { font-size: 28px; line-height: 1; color: var(--text-light); padding: 4px 8px; }
    .drawer-close:hover { color: var(--primary); }

    .main-nav > a, .main-nav .nav-item > a {
        padding: 14px 22px; font-size: 15px; border-bottom: 1px solid var(--border); border-radius: 0;
    }
    .dropdown {
        position: static; opacity: 1; visibility: visible; transform: none;
        box-shadow: none; padding: 0; background: var(--bg-gray);
    }
    .dropdown a { padding: 11px 34px; }
    .nav-actions { margin-top: 20px; padding: 0 22px; display: flex; gap: 12px; flex-direction: column; }
    .nav-actions .lang-btn { padding: 10px; text-align: center; border: 1px solid var(--border); border-radius: 6px; color: var(--text-sub); }
    .nav-actions .btn-inquiry { padding: 11px; text-align: center; border-radius: 6px; }
    .header-actions .lang-toggle, .header-actions .btn-inquiry { display: none; }
    .header-inner { gap: 12px; }
    .logo-text { font-size: 17px; }
    .logo img { height: 28px; }

    /* 首屏：移动端隐藏左侧分类栏，Banner 满宽 */
    .hero { padding-top: 0; }
    .hero-cats { display: none; }
    .banner-slider { min-height: 150px; }
    .banner-inner { padding: 0 20px; }
    .banner-inner h2 { font-size: 18px; margin-bottom: 6px; }
    .banner-inner p { font-size: 12px; margin-bottom: 10px; }
    .banner-btn { padding: 6px 16px; font-size: 12px; }
    .banner-arrow { display: none; }
    .banner-slide::after { background: linear-gradient(180deg, rgba(0,0,0,.3), rgba(0,0,0,.45)); }

    /* 圆形快捷入口 */
    .quick-nav { padding: 16px 0 4px; margin-top: 10px; }
    .quick-inner { flex-wrap: wrap; }
    .quick-item { flex: 0 0 33.33%; max-width: none; margin-bottom: 14px; gap: 8px; }
    .quick-icon { width: 48px; height: 48px; font-size: 18px; }
    .quick-label { font-size: 12.5px; }

    /* 网格自适应（依屏宽） */
    .section { padding: 26px 0; }
    .section-head { margin-bottom: 16px; }
    .section-head h2 { font-size: 17px; }
    .section-head .section-sub { font-size: 12px; }
    .section-more { font-size: 12px; }
    .product-grid { grid-template-columns: repeat(2, 1fr); gap: 0; }
    .product-card { padding: 10px; }
    .product-info { padding: 10px 2px 0; }
    .product-name { font-size: 13px; min-height: 39px; }
    .product-desc { display: none; }
    .advantage-grid { grid-template-columns: repeat(2, 1fr); gap: 0; }
    .advantage-item { padding: 22px 14px; }
    .advantage-icon { width: 46px; height: 46px; line-height: 46px; font-size: 18px; margin-bottom: 12px; }
    .advantage-item h3 { font-size: 15px; }
    .advantage-item p { font-size: 12.5px; }

    /* 列表页 */
    .list-layout { flex-direction: column; padding: 20px 16px 60px; gap: 0; }
    .list-sidebar {
        position: fixed; top: 0; left: -280px; width: 260px; height: 100%;
        background: #fff; z-index: 999; padding: 70px 18px 24px; transition: left .3s ease;
        overflow-y: auto; box-shadow: 4px 0 20px rgba(0, 0, 0, .1);
    }
    .list-sidebar.open { left: 0; }
    .list-content .product-grid { grid-template-columns: repeat(2, 1fr); }
    .list-toolbar { flex-direction: column; align-items: flex-start; gap: 12px; }
    .pagination { gap: 6px; margin-top: 30px; }
    .pagination a, .pagination span { min-width: 32px; height: 32px; line-height: 30px; font-size: 13px; }

    /* 详情页 */
    .detail-layout { padding: 16px 16px 24px; gap: 22px; }
    .detail-name { font-size: 20px; }
    .detail-summary { font-size: 13.5px; }
    .btn-inquiry-large { max-width: 100%; }
    .detail-tabs button { padding: 12px 16px; font-size: 14.5px; }
    .spec-list { grid-template-columns: 1fr; gap: 0; }
    .param-table th { width: 110px; padding: 11px 12px; font-size: 13px; }
    .param-table td { padding: 11px 12px; font-size: 13px; }
    .detail-fixed-inner { padding: 10px 16px; }
    .fixed-name { font-size: 13.5px; max-width: 160px; }
    .detail-fixed-inner .btn-inquiry-large { padding: 11px 22px; font-size: 14.5px; }

    /* 单页 */
    .page-layout { flex-direction: column; padding: 22px 16px 52px; gap: 20px; }
    .page-sidebar { width: 100%; }
    .page-sidebar ul { display: flex; border-left: 0; border-bottom: 1px solid var(--border); gap: 4px; overflow-x: auto; }
    .page-sidebar li a { border-left: 0; border-bottom: 2px solid transparent; padding: 10px 16px; white-space: nowrap; }
    .page-sidebar li.active a { border-bottom-color: var(--primary); }
    .contact-cards { grid-template-columns: 1fr; }
    .rich-content { font-size: 14px; }
    .rich-content h3 { font-size: 17px; }

    /* 页脚 */
    .footer-top { grid-template-columns: 1fr 1fr; gap: 26px 20px; padding-top: 34px; }
    .footer-col:first-child { grid-column: 1 / -1; }
    .footer-qr { grid-column: 1 / -1; }
    .site-footer { padding-top: 34px; }
    .footer-bottom-inner { flex-direction: column; text-align: center; }
    .side-tools { bottom: 90px; right: 10px; gap: 8px; }
    .side-btn { width: 40px; height: 40px; font-size: 16px; }

    /* 弹窗 */
    .modal-box { padding: 26px 20px; }
    .modal-title { font-size: 18px; }
    .form-row { flex-direction: column; gap: 0; }
}

@media (max-width: 360px) {
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .banner-inner h2 { font-size: 21px; }
    .logo-text { display: none; }
}