/* ================================================================
   默认模板主题 - Default Theme
   所有视觉样式通过此CSS控制，HTML骨架不变
   新建模板只需修改此文件（尤其是CSS变量部分）
   ================================================================ */

/* ---- CSS变量（修改这里即可换肤） ---- */
:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #3b82f6;
  --color-primary-rgb: 37, 99, 235;
  --color-secondary: #0f172a;
  --color-accent: #f59e0b;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-lighter: #94a3b8;
  --color-bg: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-dark: #0f172a;
  --color-border: #e2e8f0;
  --color-success: #10b981;
  --color-error: #ef4444;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: var(--font-body);
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-xs: 12px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 40px;
  --font-size-4xl: 48px;
  --container-width: 1200px;
  --header-height: 72px;
  --section-padding: 80px;
  --section-padding-mobile: 48px;
  --radius: 8px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 6px rgba(0,0,0,.05), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.08);
  --shadow-xl: 0 20px 40px rgba(0,0,0,.1);
  --transition: .3s ease;
  --transition-fast: .15s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: var(--font-size-base); scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-body); color: var(--color-text); background: var(--color-bg); line-height: 1.7; overflow-x: hidden; opacity: 0; transition: opacity .4s ease; }
body.is-loaded { opacity: 1; }
body.menu-open, body.lightbox-open { overflow: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); line-height: 1.3; font-weight: 700; color: var(--color-secondary); }
button { cursor: pointer; border: none; background: none; font-family: inherit; font-size: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* ---- 布局 ---- */
.container { width: 100%; max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }
.site-wrapper { min-height: 100vh; display: flex; flex-direction: column; }
.site-main { flex: 1; }

/* ---- 通用Section ---- */
.section { padding: var(--section-padding) 0; }
.section:nth-child(even) { background: var(--color-bg-secondary); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-title { font-size: var(--font-size-2xl); margin-bottom: 12px; position: relative; }
.section-title::after { content: ''; display: block; width: 48px; height: 3px; background: var(--color-primary); margin: 16px auto 0; border-radius: 2px; }
.section-subtitle { font-size: var(--font-size-lg); color: var(--color-text-light); max-width: 640px; margin: 0 auto; }
.section-more { text-align: center; margin-top: 40px; }

/* ---- 网格 ---- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---- 按钮 ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius); font-weight: 600; font-size: var(--font-size-sm); transition: all var(--transition); line-height: 1.5; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-secondary { background: var(--color-secondary); color: #fff; }
.btn-secondary:hover { background: #1e293b; color: #fff; }
.btn-outline { border: 2px solid var(--color-primary); color: var(--color-primary); background: transparent; }
.btn-outline:hover { background: var(--color-primary); color: #fff; }

/* ================================================================
   Header
   ================================================================ */
.site-header { position: fixed; top: 0; left: 0; width: 100%; height: var(--header-height); z-index: 1000; background: rgba(255,255,255,.95); backdrop-filter: blur(10px); transition: all var(--transition); }
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }
.header-container { display: flex; align-items: center; justify-content: space-between; height: var(--header-height); }
.header-logo { flex-shrink: 0; }
.logo-link { display: flex; align-items: center; gap: 10px; color: var(--color-secondary); }
.logo-link:hover { color: var(--color-primary); }
.logo-img { height: 40px; width: auto; object-fit: contain; }
.logo-text { font-size: var(--font-size-lg); font-weight: 700; white-space: nowrap; }

/* 导航 */
.header-nav { display: flex; align-items: center; }
.nav-list { display: flex; align-items: center; gap: 4px; }
.nav-item { position: relative; }
.nav-link { display: flex; align-items: center; gap: 4px; padding: 8px 16px; font-size: var(--font-size-sm); font-weight: 500; color: var(--color-text); border-radius: var(--radius); transition: all var(--transition-fast); }
.nav-link:hover, .nav-item.is-active > .nav-link { color: var(--color-primary); background: rgba(var(--color-primary-rgb), .06); }
.nav-arrow { transition: transform var(--transition-fast); }
.nav-item:hover .nav-arrow { transform: rotate(180deg); }

/* 下拉菜单 */
.nav-dropdown { position: absolute; top: 100%; left: 0; min-width: 180px; padding: 8px 0; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(8px); transition: all var(--transition); }
.nav-item:hover > .nav-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu { padding: 0; }
.dropdown-item { }
.dropdown-link { display: block; padding: 8px 20px; font-size: var(--font-size-sm); color: var(--color-text); white-space: nowrap; }
.dropdown-link:hover { color: var(--color-primary); background: rgba(var(--color-primary-rgb), .04); }

/* 移动端菜单按钮 */
.mobile-menu-btn { display: none; width: 40px; height: 40px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.mobile-menu-btn span { display: block; width: 22px; height: 2px; background: var(--color-text); border-radius: 2px; transition: all var(--transition-fast); }

/* ================================================================
   移动端菜单
   ================================================================ */
.mobile-menu-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,.5); z-index: 2000; opacity: 0; visibility: hidden; transition: all var(--transition); }
.mobile-menu-overlay.is-open { opacity: 1; visibility: visible; }
.mobile-menu-panel { position: fixed; top: 0; right: 0; width: 280px; max-width: 80vw; height: 100%; background: #fff; transform: translateX(100%); transition: transform var(--transition); overflow-y: auto; }
.mobile-menu-overlay.is-open .mobile-menu-panel { transform: translateX(0); }
.mobile-menu-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--color-border); }
.mobile-logo { display: flex; align-items: center; gap: 8px; }
.mobile-logo-img { height: 32px; width: auto; }
.mobile-logo-text { font-weight: 700; font-size: var(--font-size-sm); color: var(--color-secondary); }
.mobile-menu-close { font-size: 28px; color: var(--color-text-light); padding: 4px; }
.mobile-nav-list { padding: 8px 0; }
.mobile-nav-item { border-bottom: 1px solid var(--color-border); position: relative; }
.mobile-nav-link { display: block; padding: 14px 20px; font-size: var(--font-size-sm); font-weight: 500; color: var(--color-text); }
.mobile-nav-item.is-active > .mobile-nav-link { color: var(--color-primary); }
.mobile-subnav-toggle { position: absolute; top: 0; right: 0; width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; font-size: 18px; color: var(--color-text-light); }
.mobile-subnav { display: none; background: var(--color-bg-secondary); }
.mobile-nav-item.is-open .mobile-subnav { display: block; }
.mobile-subnav-link { display: block; padding: 10px 20px 10px 36px; font-size: var(--font-size-sm); color: var(--color-text-light); }
.mobile-subnav-link:hover { color: var(--color-primary); }
.mobile-menu-contact { padding: 20px; border-top: 1px solid var(--color-border); font-size: var(--font-size-sm); color: var(--color-text-light); }
.mobile-menu-contact p { margin-bottom: 8px; }

/* ================================================================
   Hero Banner
   ================================================================ */
.hero-banner { position: relative; margin-top: var(--header-height); }
.banner-viewport { position: relative; width: 100%; height: 560px; overflow: hidden; }
.banner-slides { position: relative; width: 100%; height: 100%; }
.banner-slide { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; transition: opacity .8s ease; }
.banner-slide.is-active { opacity: 1; z-index: 1; }
.banner-image { width: 100%; height: 100%; background-size: cover; background-position: center; }
.banner-image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to right, rgba(0,0,0,.5) 0%, rgba(0,0,0,.2) 100%); }
.banner-content { position: absolute; top: 50%; left: 0; right: 0; transform: translateY(-50%); z-index: 2; color: #fff; }
.banner-title { font-size: var(--font-size-4xl); font-weight: 800; margin-bottom: 16px; text-shadow: 0 2px 8px rgba(0,0,0,.3); }
.banner-subtitle { font-size: var(--font-size-xl); margin-bottom: 24px; opacity: .9; text-shadow: 0 1px 4px rgba(0,0,0,.2); }
.banner-cta { margin-top: 8px; }
.banner-prev, .banner-next { position: absolute; top: 50%; transform: translateY(-50%); z-index: 5; width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,.2); backdrop-filter: blur(4px); border-radius: 50%; color: #fff; transition: all var(--transition); }
.banner-prev:hover, .banner-next:hover { background: rgba(255,255,255,.4); }
.banner-prev { left: 20px; }
.banner-next { right: 20px; }
.banner-dots { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 5; display: flex; gap: 8px; }
.banner-dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.4); transition: all var(--transition); border: none; }
.banner-dot.is-active { background: #fff; transform: scale(1.3); }

/* ================================================================
   Page Banner（内页顶部）
   ================================================================ */
.page-banner { margin-top: var(--header-height); }
.page-banner-bg { position: relative; height: 280px; background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); background-size: cover; background-position: center; display: flex; align-items: center; justify-content: center; }
.page-banner-overlay { position: absolute; inset: 0; background: rgba(0,0,0,.35); }
.page-banner-content { position: relative; z-index: 1; text-align: center; color: #fff; }
.page-banner-title { font-size: var(--font-size-3xl); font-weight: 800; text-shadow: 0 2px 8px rgba(0,0,0,.2); }

/* ================================================================
   面包屑
   ================================================================ */
.breadcrumb { padding: 16px 0; }
.breadcrumb-list { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
.breadcrumb-item a { color: var(--color-text-light); font-size: var(--font-size-sm); }
.breadcrumb-item a:hover { color: var(--color-primary); }
.breadcrumb-item.is-active span { color: var(--color-text); font-size: var(--font-size-sm); font-weight: 500; }
.breadcrumb-separator { color: var(--color-text-lighter); display: flex; align-items: center; }

/* ================================================================
   标语 Slogans
   ================================================================ */
.slogans-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.slogan-item { text-align: center; padding: 32px 24px; background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); transition: all var(--transition); }
.slogan-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.slogan-icon { width: 56px; height: 56px; margin: 0 auto 16px; background: rgba(var(--color-primary-rgb), .1); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: var(--color-primary); }
.slogan-title { font-size: var(--font-size-lg); font-weight: 600; margin-bottom: 8px; color: var(--color-secondary); }
.slogan-desc { font-size: var(--font-size-sm); color: var(--color-text-light); line-height: 1.6; }

/* ================================================================
   卡片 Card
   ================================================================ */
.card { background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: all var(--transition); }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-link { display: block; color: inherit; }
.card-link:hover { color: inherit; }
.card-image { position: relative; overflow: hidden; aspect-ratio: 4/3; background: var(--color-bg-secondary); }
.card-img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.card:hover .card-img { transform: scale(1.05); }
.card-body { padding: 20px; }
.card-title { font-size: var(--font-size-base); font-weight: 600; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-category { display: inline-block; padding: 2px 10px; font-size: var(--font-size-xs); background: rgba(var(--color-primary-rgb), .08); color: var(--color-primary); border-radius: var(--radius-full); margin-bottom: 8px; }
.card-desc { font-size: var(--font-size-sm); color: var(--color-text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; font-size: var(--font-size-xs); }
.card-date { color: var(--color-text-lighter); }

/* ================================================================
   分类Tab
   ================================================================ */
.category-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; justify-content: center; }
.category-tab { padding: 8px 20px; font-size: var(--font-size-sm); border: 1px solid var(--color-border); border-radius: var(--radius-full); color: var(--color-text-light); cursor: pointer; transition: all var(--transition-fast); background: transparent; }
.category-tab:hover { border-color: var(--color-primary); color: var(--color-primary); }
.category-tab.is-active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }

/* ================================================================
   关于预览
   ================================================================ */
.about-preview-content { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.about-preview-text { font-size: var(--font-size-base); color: var(--color-text-light); line-height: 1.8; }
.about-preview-text h3 { color: var(--color-secondary); margin-bottom: 16px; font-size: var(--font-size-xl); }
.about-preview-image { border-radius: var(--radius-lg); overflow: hidden; }
.about-preview-image img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.about-preview-more { text-align: center; margin-top: 40px; }

/* ================================================================
   关于页面 - 详细内容
   ================================================================ */
.about-detail { padding: var(--section-padding) 0; }
.about-detail-content { max-width: 800px; margin: 0 auto; font-size: var(--font-size-base); line-height: 2; color: var(--color-text); }
.about-detail-content p { margin-bottom: 16px; }
.about-detail-content img { border-radius: var(--radius); margin: 24px 0; }

/* 关于页面 - 图文并排布局 */
.about-detail-layout { display: grid; grid-template-columns: 1fr 400px; gap: 48px; align-items: flex-start; max-width: none; }
.about-detail-layout .about-detail-content { max-width: none; margin: 0; }
.about-detail-image { border-radius: var(--radius-lg); overflow: hidden; position: sticky; top: calc(var(--header-height) + 24px); }
.about-side-img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius-lg); transition: transform .5s ease; }
.about-detail-image:hover .about-side-img { transform: scale(1.03); }

/* 关于页面 - 横向滑动画廊 */
.about-gallery { margin-top: 56px; padding: 40px 0; background: var(--color-bg-secondary); border-radius: var(--radius-lg); position: relative; overflow: hidden; }
.about-gallery-wrapper { position: relative; padding: 0 48px; }
.about-gallery-viewport { overflow: hidden; }
.about-gallery-track { display: flex; gap: 20px; transition: transform .5s cubic-bezier(.4,0,.2,1); }
.about-gallery-slide { flex: 0 0 calc(25% - 15px); min-width: 0; }
.about-gallery-slide-inner { background: #fff; border: 2px solid var(--color-border); border-radius: var(--radius-lg); padding: 8px; transition: all var(--transition); overflow: hidden; }
.about-gallery-slide-inner:hover { border-color: var(--color-primary-light); transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,.1); }
.about-gallery-slide img { width: 100%; aspect-ratio: 3/4; object-fit: cover; border-radius: calc(var(--radius-lg) - 4px); display: block; }
.about-gallery-prev, .about-gallery-next { position: absolute; top: 50%; transform: translateY(-50%); z-index: 5; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,.06); backdrop-filter: blur(4px); border: 1px solid var(--color-border); border-radius: 50%; color: var(--color-text); cursor: pointer; transition: all var(--transition); }
.about-gallery-prev:hover, .about-gallery-next:hover { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.about-gallery-prev { left: 8px; }
.about-gallery-next { right: 8px; }

/* ================================================================
   产品详情
   ================================================================ */
.product-detail-section { padding: var(--section-padding) 0; }
.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.gallery { position: sticky; top: calc(var(--header-height) + 20px); }
.gallery-main { position: relative; aspect-ratio: 1; border-radius: var(--radius-lg); overflow: hidden; background: var(--color-bg-secondary); }
.gallery-main-img { width: 100%; height: 100%; object-fit: contain; }
.gallery-zoom { position: absolute; bottom: 12px; right: 12px; width: 36px; height: 36px; background: rgba(0,0,0,.5); border-radius: 50%; color: #fff; display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity var(--transition); }
.gallery:hover .gallery-zoom { opacity: 1; }
.gallery-thumbs { display: flex; gap: 8px; margin-top: 12px; overflow-x: auto; }
.gallery-thumb { flex-shrink: 0; width: 64px; height: 64px; border-radius: var(--radius); overflow: hidden; border: 2px solid transparent; cursor: pointer; transition: border-color var(--transition-fast); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumb.is-active, .gallery-thumb:hover { border-color: var(--color-primary); }
.product-info { }
.product-info-title { font-size: var(--font-size-2xl); margin-bottom: 16px; }
.product-info-category { margin-bottom: 16px; }
.product-info-desc { font-size: var(--font-size-base); color: var(--color-text-light); line-height: 1.8; }
.product-info-desc p { margin-bottom: 12px; }

/* ================================================================
   文章内容（新闻/案例详情）
   ================================================================ */
.article-section { padding: var(--section-padding) 0; }
.article-container { max-width: 860px; margin: 0 auto; }
.article-header { margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--color-border); }
.article-title { font-size: var(--font-size-2xl); margin-bottom: 16px; }
.article-meta { display: flex; align-items: center; gap: 16px; font-size: var(--font-size-sm); color: var(--color-text-light); }
.article-body { font-size: var(--font-size-base); line-height: 2; color: var(--color-text); }
.article-body p { margin-bottom: 16px; }
.article-body img { border-radius: var(--radius); margin: 20px 0; max-width: 100%; }
.article-body h2 { font-size: var(--font-size-xl); margin: 32px 0 16px; }
.article-body h3 { font-size: var(--font-size-lg); margin: 24px 0 12px; }
.article-body ul, .article-body ol { margin: 12px 0 12px 24px; }
.article-body li { margin-bottom: 8px; }
.article-body blockquote { border-left: 4px solid var(--color-primary); padding: 12px 20px; margin: 16px 0; background: var(--color-bg-secondary); border-radius: 0 var(--radius) var(--radius) 0; color: var(--color-text-light); }
.article-images { margin-top: 32px; }
.article-images-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.article-images-grid img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius); cursor: zoom-in; }

/* ================================================================
   相关推荐
   ================================================================ */
.related-section { padding: var(--section-padding) 0; background: var(--color-bg-secondary); }
.related-title { font-size: var(--font-size-xl); text-align: center; margin-bottom: 32px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ================================================================
   联系信息
   ================================================================ */
.contact-section { padding: var(--section-padding) 0; }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-bottom: 48px; }
.contact-item { display: flex; gap: 16px; padding: 24px; background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.contact-icon { flex-shrink: 0; width: 48px; height: 48px; background: rgba(var(--color-primary-rgb), .1); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: var(--color-primary); }
.contact-icon svg { width: 22px; height: 22px; }
.contact-label { font-size: var(--font-size-sm); color: var(--color-text-light); margin-bottom: 4px; }
.contact-value { font-size: var(--font-size-base); font-weight: 600; color: var(--color-secondary); word-break: break-all; }

/* ================================================================
   表单
   ================================================================ */
.form-section { padding: 48px 0 var(--section-padding); }
.form-section-title { font-size: var(--font-size-xl); text-align: center; margin-bottom: 32px; }
.form { max-width: 640px; margin: 0 auto; background: #fff; padding: 40px; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-label { display: block; margin-bottom: 6px; font-size: var(--font-size-sm); font-weight: 500; color: var(--color-text); }
.form-input, .form-textarea, .form-select { width: 100%; padding: 10px 14px; border: 1px solid var(--color-border); border-radius: var(--radius); font-size: var(--font-size-sm); color: var(--color-text); background: #fff; transition: border-color var(--transition-fast); outline: none; }
.form-input:focus, .form-textarea:focus, .form-select:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), .1); }
.form-textarea { resize: vertical; min-height: 120px; }
.form-submit { width: 100%; padding: 12px; font-weight: 600; }
.form-message { text-align: center; padding: 10px; margin-top: 12px; border-radius: var(--radius); font-size: var(--font-size-sm); }
.form-message.is-success { background: rgba(16, 185, 129, .1); color: var(--color-success); }
.form-message.is-error { background: rgba(239, 68, 68, .1); color: var(--color-error); }

/* ================================================================
   CTA 区域
   ================================================================ */
.section-contact-cta { background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); color: #fff; text-align: center; padding: 64px 0; }
.section-contact-cta .section-title { color: #fff; }
.section-contact-cta .section-title::after { background: rgba(255,255,255,.4); }
.cta-desc { font-size: var(--font-size-lg); opacity: .9; margin-bottom: 24px; }
.cta-phone { font-size: var(--font-size-2xl); font-weight: 800; margin-bottom: 24px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-buttons .btn { border-color: #fff; color: #fff; }
.cta-buttons .btn:hover { background: #fff; color: var(--color-primary); }

/* ================================================================
   分页
   ================================================================ */
.pagination { display: flex; align-items: center; justify-content: center; gap: 4px; margin-top: 48px; }
.page-link { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 12px; font-size: var(--font-size-sm); border: 1px solid var(--color-border); border-radius: var(--radius); color: var(--color-text); transition: all var(--transition-fast); }
.page-link:hover { border-color: var(--color-primary); color: var(--color-primary); }
.page-link.is-active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.page-ellipsis { border: none; color: var(--color-text-lighter); }

/* ================================================================
   灯箱
   ================================================================ */
.lightbox-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.92); z-index: 9999; display: flex; align-items: center; justify-content: center; flex-direction: column; }
.lightbox-close { position: absolute; top: 16px; right: 16px; font-size: 32px; color: #fff; opacity: .7; z-index: 2; }
.lightbox-close:hover { opacity: 1; }
.lightbox-body { display: flex; align-items: center; justify-content: center; width: 100%; max-width: 90vw; max-height: 80vh; }
.lightbox-content { display: flex; align-items: center; justify-content: center; }
.lightbox-image { max-width: 90vw; max-height: 80vh; object-fit: contain; border-radius: var(--radius); }
.lightbox-prev, .lightbox-next { position: absolute; top: 50%; transform: translateY(-50%); color: #fff; opacity: .7; z-index: 2; }
.lightbox-prev:hover, .lightbox-next:hover { opacity: 1; }
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }
.lightbox-counter { color: rgba(255,255,255,.6); font-size: var(--font-size-sm); margin-top: 16px; }

/* ================================================================
   回到顶部
   ================================================================ */
.back-to-top { position: fixed; bottom: 32px; right: 32px; width: 44px; height: 44px; background: var(--color-primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-md); opacity: 0; visibility: hidden; transform: translateY(12px); transition: all var(--transition); z-index: 900; }
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-2px); }

/* ================================================================
   Footer
   ================================================================ */
.site-footer { background: var(--color-bg-dark); color: rgba(255,255,255,.75); }
.footer-main { padding: 56px 0 40px; }
.footer-container { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo-img { height: 36px; width: auto; filter: brightness(0) invert(1); }
.footer-logo-text { font-size: var(--font-size-lg); font-weight: 700; color: #fff; }
.footer-desc { font-size: var(--font-size-sm); line-height: 1.8; opacity: .7; }
.footer-title { font-size: var(--font-size-base); font-weight: 600; color: #fff; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 2px solid rgba(255,255,255,.1); }
.footer-link-list li { margin-bottom: 8px; }
.footer-link-list a { font-size: var(--font-size-sm); color: rgba(255,255,255,.6); transition: color var(--transition-fast); }
.footer-link-list a:hover { color: #fff; }
.footer-contact-list { }
.footer-contact-item { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 12px; font-size: var(--font-size-sm); }
.footer-contact-icon { flex-shrink: 0; color: var(--color-primary-light); margin-top: 3px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 16px 0; }
.footer-copyright { text-align: center; font-size: var(--font-size-xs); color: rgba(255,255,255,.4); }

/* ================================================================
   加载动画
   ================================================================ */
.loading-spinner { display: flex; justify-content: center; padding: 48px; }
.loading-spinner::after { content: ''; width: 36px; height: 36px; border: 3px solid var(--color-border); border-top-color: var(--color-primary); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ================================================================
   空状态
   ================================================================ */
.empty-state { text-align: center; padding: 64px 20px; color: var(--color-text-light); }
.empty-state-icon { font-size: 48px; margin-bottom: 16px; opacity: .3; }
.empty-state-text { font-size: var(--font-size-lg); }

/* ================================================================
   分页
   ================================================================ */
.pagination { display: flex; align-items: center; justify-content: center; gap: 6px; margin-top: 40px; padding-top: 24px; }
.pg-btn { display: inline-flex; align-items: center; justify-content: center; min-width: 36px; height: 36px; padding: 0 10px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: #fff; font-size: var(--font-size-sm); color: var(--color-text-light); text-decoration: none; transition: var(--transition-base); cursor: pointer; }
.pg-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pg-active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.pg-active:hover { background: var(--color-primary-dark); }
.pg-disabled { opacity: .4; cursor: default; pointer-events: none; }

/* ================================================================
   响应式
   ================================================================ */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .footer-container { grid-template-columns: 1fr 1fr; }
  .product-detail-grid { grid-template-columns: 1fr; }
  .gallery { position: static; }
  .about-preview-content { grid-template-columns: 1fr; }
  .about-detail-layout { grid-template-columns: 1fr; }
  .about-detail-image { position: static; }
  .about-gallery-slide { flex: 0 0 calc(33.333% - 14px); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root { --section-padding: var(--section-padding-mobile); --header-height: 60px; }
  .header-nav { display: none; }
  .mobile-menu-btn { display: flex; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .banner-viewport { height: 400px; }
  .banner-title { font-size: var(--font-size-2xl); }
  .banner-subtitle { font-size: var(--font-size-base); }
  .banner-prev, .banner-next { width: 36px; height: 36px; }
  .page-banner-bg { height: 200px; }
  .page-banner-title { font-size: var(--font-size-xl); }
  .section-title { font-size: var(--font-size-xl); }
  .footer-container { grid-template-columns: 1fr; gap: 24px; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .form { padding: 24px; }
  .cta-phone { font-size: var(--font-size-xl); }
  .article-title { font-size: var(--font-size-xl); }
  .about-gallery-slide { flex: 0 0 calc(50% - 10px); }
  .about-gallery-wrapper { padding: 0 40px; }
  .related-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .banner-viewport { height: 300px; }
  .banner-title { font-size: var(--font-size-xl); }
  .banner-prev, .banner-next { display: none; }
  .slogans-grid { grid-template-columns: 1fr; }
  .about-gallery-slide { flex: 0 0 calc(100% - 0px); }
  .about-gallery-wrapper { padding: 0 36px; }
}