/* ==================== 全局样式与变量 ==================== */
:root {
  --primary: #0056b3;
  --primary-light: rgba(0,86,179,0.06);
  --primary-lighter: rgba(0,86,179,0.12);
  --primary-border: rgba(0,86,179,0.2);
  --accent: #c00000;
  --accent-light: rgba(192,0,0,0.06);
  --text: #333;
  --text-light: #666;
  --text-muted: #999;
  --bg-gray: #f4f4f4;
  --bg-light: #f8f9fa;
  --border: #e8e8e8;
  --border-light: #f0f0f0;
  --white: #fff;
  --footer-bg: #222;
  --footer-text: #ccc;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-sm: 6px;
  --tint: #f6f9fc;
  --tint-2: #eef3f9;
  --heading: #15293f;
  --shadow-sm: 0 2px 10px rgba(0,0,0,0.05);
  --shadow-card: 0 8px 28px rgba(0,86,179,0.12);
  --shadow-drop: 0 8px 24px rgba(0,0,0,0.1);
  --transition: 0.3s ease;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
body { 
  font-family: "Helvetica Neue", Helvetica, Arial, "Microsoft YaHei", sans-serif; 
  color: var(--text); 
  line-height: 1.6; 
  background: var(--white); 
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ==================== 焦点样式 (可访问性) ==================== */
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 2px; }

/* ==================== 顶部导航 ==================== */
.top-bar { 
  background: #f8f8f8; 
  border-bottom: 1px solid #ddd; 
  font-size: 12px; 
  padding: 5px 0; 
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }

/* Header */
header { 
  background: var(--white); 
  box-shadow: var(--shadow-sm); 
  position: sticky; top: 0; z-index: 100; 
}
.header-main { padding: 15px 0; }
.logo { font-size: 22px; font-weight: bold; color: var(--primary); display: flex; align-items: center; }
.logo-divider { display: inline-block; width: 1px; height: 24px; background: var(--text-muted); margin: 0 12px; }
.logo-cn { font-size: 18px; color: var(--text); font-weight: 600; }
nav ul { display: flex; gap: 30px; }
nav > ul > li { position: relative; padding: 10px 0; }
nav a { font-weight: 600; font-size: 15px; color: #444; padding-bottom: 5px; border-bottom: 2px solid transparent; }
nav a:hover, nav a.active { color: var(--primary); border-bottom-color: var(--primary); }

/* 二级下拉菜单 */
nav .submenu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-drop);
  min-width: 200px; padding: 8px 0; z-index: 200;
  opacity: 0; visibility: hidden; transition: opacity 0.25s, visibility 0.25s;
}
nav li:hover > .submenu, nav li:focus-within > .submenu { opacity: 1; visibility: visible; }
nav .submenu a {
  display: block; padding: 10px 20px; font-size: 14px; font-weight: 500;
  color: #444; border-bottom: none; white-space: nowrap; transition: background 0.2s, color 0.2s;
}
nav .submenu a:hover { background: var(--primary-light); color: var(--primary); }

/* ==================== 汉堡菜单按钮 ==================== */
.hamburger {
  display: none;
  flex-direction: column; justify-content: center; align-items: center;
  width: 36px; height: 36px; background: transparent; border: none;
  cursor: pointer; padding: 4px; z-index: 300;
}
.hamburger span {
  display: block; width: 22px; height: 2px; background: var(--text);
  border-radius: 2px; transition: transform 0.3s, opacity 0.3s;
  transform-origin: center;
}
.hamburger span + span { margin-top: 5px; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* 移动端导航覆盖层 */
.mobile-nav-overlay {
  display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.4); z-index: 250; opacity: 0; visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.mobile-nav-overlay.show { opacity: 1; visibility: visible; }
.mobile-nav {
  position: fixed; top: 0; right: 0; width: 280px; height: 100%;
  background: var(--white); z-index: 260; padding: 80px 24px 40px;
  overflow-y: auto; transform: translateX(100%);
  transition: transform 0.35s ease;
  box-shadow: -4px 0 20px rgba(0,0,0,0.1);
}
.mobile-nav.show { transform: translateX(0); }
.mobile-nav a {
  display: block; padding: 14px 0; font-size: 16px; font-weight: 600;
  color: #444; border-bottom: 1px solid var(--border-light);
}
.mobile-nav a:hover, .mobile-nav a.mobile-active { color: var(--primary); }
.mobile-nav .mobile-sub {
  padding-left: 16px;
}
.mobile-nav .mobile-sub a {
  font-size: 14px; font-weight: 500; padding: 10px 0; color: var(--text-light);
}
.mobile-nav .mobile-sub a:hover { color: var(--primary); }

/* ==================== 通用工具类 ==================== */
.en-text { display: block; font-size: 0.7em; color: var(--text-muted); font-weight: 400; letter-spacing: 1px; text-transform: uppercase; }
.inline-en { display: inline; margin-left: 4px; }
.contact-en { display: block; font-size: 13px; color: var(--text-muted); margin-top: 2px; }
.product-title-en { display: block; font-size: 11px; color: var(--text-muted); font-weight: 400; margin-bottom: 8px; line-height: 1.4; }

/* ==================== 滚动淡入动画 ==================== */
.animate-on-scroll {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-on-scroll.visible {
  opacity: 1; transform: translateY(0);
}

/* ==================== 回到顶部按钮 ==================== */
.back-to-top {
  position: fixed; bottom: 30px; right: 30px; z-index: 400;
  width: 44px; height: 44px; background: var(--primary); color: var(--white);
  border: none; border-radius: 50%; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(0,86,179,0.3);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s, background 0.2s;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: #004494; }
.back-to-top svg { width: 20px; height: 20px; }

/* ==================== 产品搜索 ==================== */
.product-search-wrapper {
  display: flex; justify-content: center; margin-bottom: 32px;
}
.product-search {
  width: 100%; max-width: 480px; padding: 12px 20px;
  border: 2px solid var(--border); border-radius: 28px;
  font-size: 15px; color: var(--text); background: var(--white);
  transition: border-color 0.3s, box-shadow 0.3s;
  outline: none;
}
.product-search:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,86,179,0.1);
}
.product-search::placeholder { color: var(--text-muted); }
.no-results {
  text-align: center; color: var(--text-muted); font-size: 14px;
  padding: 32px 0; display: none; grid-column: 1 / -1;
}

/* ==================== Banner & 按钮 ==================== */
.hero { 
  position: relative;
  background: linear-gradient(rgba(0,86,179,0.85), rgba(0,40,90,0.95)), url('images/6_new.png');
  background-size: cover; background-position: center; 
  color: var(--white); padding: 120px 0; text-align: center;
  animation: heroSlide 20s infinite;
}
@keyframes heroSlide {
  0%, 20%   { background-image: linear-gradient(rgba(0,86,179,0.85), rgba(0,40,90,0.95)), url('images/6_new.png'); }
  25%, 45%  { background-image: linear-gradient(rgba(0,86,179,0.85), rgba(0,40,90,0.95)), url('images/8_new.png'); }
  50%, 70%  { background-image: linear-gradient(rgba(0,86,179,0.85), rgba(0,40,90,0.95)), url('images/10_new.png'); }
  75%, 95%  { background-image: linear-gradient(rgba(0,86,179,0.85), rgba(0,40,90,0.95)), url('images/1_new.png'); }
}
.hero h1 { font-size: 46px; letter-spacing: 2px; font-weight: 800; }
.hero-sub { display: block; font-size: 16px; font-weight: 400; letter-spacing: 4px; text-transform: uppercase; color: rgba(255,255,255,0.75); margin-bottom: 30px; }
.hero p { font-size: 18px; opacity: 0.9; max-width: 800px; margin: 0 auto 35px; }
.hero-en { display: block; font-size: 14px; color: rgba(255,255,255,0.6); margin-top: 6px; letter-spacing: 1px; }

.btn { 
  display: inline-block; padding: 12px 30px; 
  background: var(--accent); color: var(--white); 
  border-radius: var(--radius); font-weight: bold; transition: var(--transition);
}
.btn:hover { background: #a00000; }
.btn-sub { font-weight: 400; font-size: 0.85em; }

/* ==================== 数据看板 ==================== */
.stats-section { background: var(--bg-gray); padding: 40px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat-item h3 { font-size: 32px; color: var(--primary); margin-bottom: 5px; }
.stat-item p { font-size: 14px; color: var(--text-light); font-weight: 600; }
.stat-item .en-text { font-size: 11px; margin-top: 2px; }

/* ==================== 区块标题 ==================== */
.section-padding { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 { font-size: 30px; font-weight: 700; color: var(--heading); letter-spacing: .5px; position: relative; display: inline-block; padding-bottom: 16px; }
.section-title h2 .en-text { display: block; font-size: 13px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--primary); margin-top: 8px; }
.section-title h2::after { content: ''; width: 52px; height: 3px; border-radius: 2px; background: linear-gradient(90deg, var(--primary), #3b82c4); position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); }
.section-title p { color: var(--text-light); margin-top: 14px; font-size: 15px; }

/* ==================== 关于我们 ==================== */
#about { padding: 80px 0; }
.about-info { max-width: 1000px; margin: 0 auto; }

.feature-box { margin-bottom: 30px; display: flex; align-items: stretch; padding: 22px; background: #f9f9f9; border: 1px solid var(--border); border-radius: var(--radius); }
.feature-box h3 { color: var(--primary); font-size: 16px; margin-bottom: 4px; }
.feature-box h3 .en-text { font-size: 11px; margin-bottom: 10px; letter-spacing: 2px; }
.feature-box p { font-size: 14px; color: #555; line-height: 1.7; }
.feature-img { width: 260px; object-fit: cover; border-radius: 6px; flex-shrink: 0; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.feature-text { flex: 1; border-left: 3px solid var(--primary); padding-left: 20px; margin-left: 20px; }

/* ==================== 产品展示区 ==================== */
#products { padding: 80px 0; background: var(--bg-light); }
#products .section-title { margin-bottom: 50px; }

.product-lead { text-align: center; margin-bottom: 48px; color: var(--text-light); font-size: 14px; line-height: 1.8; }
.product-lead em { color: var(--primary); font-style: normal; font-weight: 600; }

/* 分类入口 */
.category-entries { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin-bottom: 56px; }
.cat-entry { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); text-align: center; padding: 36px 20px 28px; transition: var(--transition); cursor: pointer; display: block; color: inherit; }
.cat-entry:hover { border-color: var(--primary); box-shadow: var(--shadow-card); }
.cat-entry-icon { width: 56px; height: 56px; margin: 0 auto 16px; display: flex; align-items: center; justify-content: center; background: var(--primary-light); border-radius: 50%; transition: background 0.3s; }
.cat-entry:hover .cat-entry-icon { background: var(--primary-lighter); }
.cat-entry-icon svg { width: 28px; height: 28px; color: var(--primary); }
.cat-entry-name { font-size: 17px; font-weight: 700; color: #222; margin-bottom: 6px; }
.cat-entry-en { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1.5px; }
.cat-entry-count { display: inline-block; margin-top: 12px; font-size: 12px; color: var(--primary); background: var(--primary-light); padding: 3px 12px; border-radius: 12px; }

/* 分类区域标题 */
.category-section { margin-bottom: 52px; scroll-margin-top: 90px; }
.category-title { font-size: 20px; font-weight: 700; color: #222; border-left: 4px solid var(--primary); padding: 6px 0 6px 18px; margin: 0 0 28px; display: flex; align-items: baseline; background: linear-gradient(90deg, rgba(0,86,179,0.04) 0%, transparent 100%); border-radius: 0 var(--radius) var(--radius) 0; }
.category-title span { font-size: 13px; color: var(--text-light); font-weight: 400; margin-left: 12px; }

/* 子系列标题 */
.subseries-title { font-size: 15px; font-weight: 600; color: #444; margin: 32px 0 18px; padding-bottom: 10px; border-bottom: 1px dashed #e0e0e0; display: flex; align-items: center; gap: 8px; }
.subseries-title::before { content: ''; width: 8px; height: 8px; background: var(--primary); border-radius: 2px; flex-shrink: 0; }
.subseries-title .sub-en { font-size: 11px; color: var(--text-muted); font-weight: 400; }

/* 产品网格 */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.featured-block { margin-top: 56px; }
.featured-more { text-align: center; margin-top: 40px; }

/* 产品卡片 */
.product-card { background: var(--white); border: 1px solid var(--border); transition: var(--transition); display: flex; flex-direction: column; }
.product-card:hover { border-color: var(--primary); box-shadow: var(--shadow-card); transform: translateY(-5px); }
.product-card.hidden { display: none; }
.product-img-box { width: 100%; aspect-ratio: 4/3; background: #fafbfc; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.product-img-box img { width: 100%; height: 100%; object-fit: contain; padding: 20px; transition: transform 0.4s; }
.product-card:hover .product-img-box img { transform: scale(1.04); }

/* 产品信息 */
.product-info { padding: 16px 18px 18px; flex: 1; display: flex; flex-direction: column; border-top: 1px solid var(--border-light); }
.product-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.product-tag { font-size: 10px; font-weight: 600; padding: 2px 8px; border-radius: 2px; letter-spacing: 0.5px; }
.tag-series { background: rgba(0,86,179,0.08); color: var(--primary); }
.tag-feature { background: var(--accent-light); color: var(--accent); }
.tag-new { background: #e8f5e9; color: #2e7d32; }
.product-title { font-size: 15px; font-weight: 700; color: #1a1a1a; line-height: 1.4; margin-bottom: 6px; }
.product-desc { font-size: 12px; color: #888; line-height: 1.6; flex: 1; margin-bottom: 12px; }
.product-link { font-size: 12px; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; margin-top: auto; padding: 6px 14px; border: 1px solid var(--primary-border); border-radius: var(--radius); transition: var(--transition); align-self: flex-start; }
.product-link:hover { background: var(--primary); color: var(--white); border-color: var(--primary); }
.product-link::after { content: '→'; margin-left: 6px; transition: transform 0.3s; }
.product-card:hover .product-link::after { transform: translateX(4px); }

/* ==================== 联系我们 ==================== */
#contact { padding: 80px 0; background: var(--bg-gray); }
.contact-row { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; text-align: center; }
.contact-card { background: var(--white); border: 1px solid #eee; border-radius: 8px; padding: 30px 40px; min-width: 280px; flex: 1; max-width: 400px; }
.contact-card h4 { font-size: 18px; color: var(--primary); margin-bottom: 15px; }
.contact-card p { font-size: 14px; color: #555; line-height: 2.2; }

/* ==================== 技术支持 ==================== */
#support { padding: 80px 0; }
.support-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.support-card { 
  background: var(--white); border: 1px solid var(--border); border-radius: 8px; 
  padding: 32px 24px 28px; transition: var(--transition);
  display: flex; flex-direction: column; 
}
.support-card:hover { border-color: var(--primary); box-shadow: var(--shadow-card); transform: translateY(-2px); }
.support-icon { 
  width: 48px; height: 48px; margin-bottom: 18px; 
  display: flex; align-items: center; justify-content: center;
  background: var(--primary-light); border-radius: 10px; color: var(--primary);
}
.support-icon svg { width: 24px; height: 24px; }
.support-card h4 { font-size: 16px; font-weight: 700; color: #222; margin-bottom: 6px; }
.support-card h4 .en-text { font-size: 11px; margin-top: 2px; }
.support-card p { font-size: 13px; color: #666; line-height: 1.7; flex: 1; margin-bottom: 16px; }
.support-link { 
  font-size: 13px; color: var(--primary); font-weight: 600; 
  display: inline-flex; align-items: center; align-self: flex-start;
  transition: var(--transition); 
}
.support-link:hover { color: var(--accent); }

/* 文档菜单 */
.doc-menu-wrapper { position: relative; margin-top: auto; }
.doc-menu-trigger {
  font-size: 13px; color: var(--primary); font-weight: 600;
  background: var(--primary-light); border: 1px solid var(--primary-border);
  padding: 8px 16px; border-radius: var(--radius); cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  transition: var(--transition);
}
.doc-menu-trigger:hover { background: var(--primary-lighter); }
.doc-arrow { font-size: 10px; transition: transform 0.25s; }
.doc-menu-trigger.open .doc-arrow { transform: rotate(180deg); }

.doc-submenu {
  position: absolute; bottom: 100%; left: 0; margin-bottom: 8px;
  background: var(--white); border: 1px solid var(--border);
  border-radius: 8px; box-shadow: 0 8px 30px rgba(0,0,0,0.12);
  min-width: 260px; padding: 6px 0; z-index: 50;
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity 0.25s, visibility 0.25s, transform 0.25s;
}
.doc-submenu.show { opacity: 1; visibility: visible; transform: translateY(0); }
.doc-submenu li { list-style: none; }
.doc-submenu a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px; font-size: 13px; font-weight: 500; color: #444;
  transition: background 0.2s, color 0.2s;
}
.doc-submenu a:hover { background: var(--primary-light); color: var(--primary); }
.doc-submenu a svg { width: 18px; height: 18px; color: var(--text-muted); flex-shrink: 0; }
.doc-submenu a:hover svg { color: var(--primary); }
.doc-sub-en { font-size: 10px; color: var(--text-muted); margin-left: auto; }
.support-contact-bar { 
  text-align: center; background: var(--bg-light); 
  border: 1px solid var(--border); border-radius: 8px; padding: 20px 30px; 
}
.support-contact-bar p { font-size: 14px; color: #444; }
.support-contact-bar .contact-en { font-size: 12px; color: var(--text-muted); margin-top: 6px; }

/* ==================== 统一弹窗系统 ==================== */
.modal-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.5); z-index: 1000;
  display: flex; align-items: flex-start; justify-content: center;
  padding: 40px 20px; overflow-y: auto;
  opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s;
}
.modal-overlay.show { opacity: 1; visibility: visible; }
.modal-panel {
  background: var(--white); border-radius: 14px; width: 90%;
  box-shadow: 0 24px 64px rgba(0,0,0,0.22);
  transform: translateY(20px); transition: transform 0.3s;
  overflow: hidden; margin: auto;
}
.modal-overlay.show .modal-panel { transform: translateY(0); }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 30px; background: linear-gradient(135deg, #f0f5fa 0%, #e8eef4 100%);
  border-bottom: 1px solid var(--primary-border);
}
.modal-header h3 { font-size: 21px; color: #1a1a1a; font-weight: 700; }
.modal-header h3 .en-text { font-size: 12px; display: block; margin-top: 2px; }
.modal-close-btn {
  width: 38px; height: 38px; border: none; background: rgba(0,0,0,0.06);
  border-radius: 50%; font-size: 22px; color: #555; cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: var(--transition);
  flex-shrink: 0;
}
.modal-close-btn:hover { background: var(--accent); color: var(--white); }
.modal-body { padding: 28px 30px 32px; max-height: 65vh; overflow-y: auto; line-height: 1.8; }

/* 文档模态宽度 */
.modal-overlay.doc-modal .modal-panel { max-width: 720px; }
.modal-overlay.tech-modal .modal-panel { max-width: 860px; }
.modal-overlay.prod-modal .modal-panel { max-width: 900px; }
.modal-overlay.lead-modal .modal-panel { max-width: 520px; }
.modal-overlay.privacy-modal .modal-panel { max-width: 720px; }
.lead-intro { font-size: 14px; color: var(--text-light); margin-bottom: 20px; }
.lead-intro strong { color: var(--primary); }
.lead-form .field { margin-bottom: 16px; }
.lead-form label { display: block; font-size: 13px; color: #444; margin-bottom: 6px; font-weight: 600; }
.lead-form .req { color: var(--accent); }
.lead-form input { width: 100%; padding: 11px 13px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; font-family: inherit; transition: border-color .2s; }
.lead-form input:focus { outline: none; border-color: var(--primary); }
.lead-submit { width: 100%; margin-top: 6px; padding: 12px; font-size: 15px; }
.lead-success { text-align: center; padding: 14px 0; }
.lead-success-icon { width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 50%; background: var(--primary-light); color: var(--primary); font-size: 30px; display: flex; align-items: center; justify-content: center; }
.lead-success h4 { font-size: 18px; margin-bottom: 8px; }
.lead-success p { font-size: 14px; color: var(--text-light); margin-bottom: 18px; }
.footer-links { font-size: 13px; color: var(--footer-text); margin: 6px 0 10px; }
.footer-links a { color: #7fa8d6; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-divider { margin: 0 10px; color: #555; }
.footer-icp { color: var(--footer-text); }
.privacy-update { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.privacy-modal .modal-body h4 { font-size: 15px; color: var(--primary); margin: 18px 0 8px; font-weight: 700; }
.privacy-modal .modal-body p { font-size: 14px; color: var(--text-light); margin-bottom: 6px; }

/* ==================== 文档下载弹窗 ==================== */
.doc-modal-header { padding: 24px 28px 16px; border-bottom: 1px solid var(--border-light); align-items: center; }
.doc-modal-header h3 { font-size: 20px; color: #222; font-weight: 700; }

/* 下载列表 */
.doc-list { display: flex; flex-direction: column; gap: 10px; }
.doc-item {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 20px; border: 1px solid var(--border); border-radius: 8px;
  transition: var(--transition);
}
.doc-item:hover { border-color: var(--primary); background: var(--primary-light); }
.doc-item-icon {
  width: 44px; height: 44px; background: var(--primary-light); border-radius: 8px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.doc-item-icon svg { width: 22px; height: 22px; color: var(--primary); }
.doc-item-info { flex: 1; }
.doc-item-name { font-size: 14px; font-weight: 600; color: #222; margin-bottom: 2px; }
.doc-item-meta { font-size: 11px; color: var(--text-muted); }
.doc-item-dl {
  font-size: 12px; font-weight: 600; color: var(--white); background: var(--primary);
  padding: 7px 16px; border-radius: var(--radius); flex-shrink: 0;
  transition: var(--transition);
}
.doc-item-dl:hover { background: #004494; }
.doc-modal-empty { text-align: center; padding: 40px 20px; color: var(--text-muted); }
.doc-modal-empty svg { width: 48px; height: 48px; margin-bottom: 16px; color: #ccc; }

/* ==================== 技术详情弹窗样式 ==================== */
.tech-modal-body h4 { font-size: 17px; color: var(--primary); margin: 24px 0 12px; padding-bottom: 8px; border-bottom: 2px solid var(--primary-light); }
.tech-modal-body h4:first-child { margin-top: 0; }
.tech-modal-body h5 { font-size: 15px; color: #333; margin: 16px 0 8px; font-weight: 600; }
.tech-modal-body p { font-size: 14px; color: #555; margin-bottom: 10px; }
.tech-modal-body ul { margin: 8px 0 16px 20px; }
.tech-modal-body ul li { font-size: 14px; color: #555; margin-bottom: 6px; position: relative; padding-left: 16px; }
.tech-modal-body ul li::before { content: '•'; position: absolute; left: 0; color: var(--primary); font-weight: bold; }

/* 表格样式 */
.tech-table { width: 100%; border-collapse: collapse; margin: 12px 0 20px; font-size: 13px; }
.tech-table th, .tech-table td { padding: 10px 14px; text-align: left; border: 1px solid var(--border); }
.tech-table th { background: var(--primary-light); color: var(--primary); font-weight: 700; white-space: nowrap; }
.tech-table td { color: #555; }
.tech-table tr:hover td { background: #fafbfc; }

/* 高亮提示框 */
.tech-tip { 
  background: linear-gradient(135deg, #fff8e1, #fff3cd); 
  border-left: 4px solid #f0ad4e; padding: 14px 18px; 
  border-radius: 0 6px 6px 0; margin: 14px 0; font-size: 13px; color: #8a6d14; 
}
.tech-tip strong { color: #c00; }

/* FAQ折叠 */
.faq-item { border: 1px solid var(--border); border-radius: 8px; margin-bottom: 10px; overflow: hidden; }
.faq-question { 
  padding: 14px 18px; font-size: 14px; font-weight: 600; color: #333; 
  background: #fafbfc; cursor: pointer; display: flex; align-items: center; justify-content: space-between;
  transition: background 0.2s;
}
.faq-question:hover { background: var(--primary-light); }
.faq-question::after { content: '▾'; font-size: 12px; color: var(--text-muted); transition: transform 0.3s; }
.faq-question.open::after { transform: rotate(180deg); }
.faq-answer { 
  padding: 0 18px; max-height: 0; overflow: hidden; transition: max-height 0.35s, padding 0.35s;
  font-size: 13px; color: #666; line-height: 1.8;
}
.faq-answer.open { padding: 12px 18px 16px; max-height: 600px; }
.faq-answer ul { margin: 6px 0 6px 18px; }
.faq-answer ul li { font-size: 13px; color: #666; margin-bottom: 4px; }

/* 步骤列表 */
.step-list { counter-reset: step; margin: 12px 0 20px; }
.step-item { 
  counter-increment: step; display: flex; align-items: flex-start; gap: 14px;
  padding: 12px 0; border-bottom: 1px dashed var(--border-light);
}
.step-item:last-child { border-bottom: none; }
.step-num { 
  width: 32px; height: 32px; background: var(--primary); color: var(--white); 
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; flex-shrink: 0;
}
.step-content { flex: 1; }
.step-content h5 { margin: 0 0 4px; font-size: 15px; }
.step-content p { font-size: 13px; color: #666; margin: 0; }

/* ==================== 产品详情弹窗 ==================== */
/* 产品标签区 */
.prod-tags-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.prod-tag-item { font-size: 11px; font-weight: 600; padding: 4px 12px; border-radius: 4px; }
.prod-tag-item.tag-series { background: rgba(0,86,179,0.08); color: var(--primary); }
.prod-tag-item.tag-drive { background: rgba(192,0,0,0.06); color: var(--accent); }
.prod-tag-item.tag-new { background: #e8f5e9; color: #2e7d32; }

/* 产品描述 */
.prod-desc-text { font-size: 14px; color: #555; line-height: 1.8; margin-bottom: 24px; padding: 16px 20px; background: #fafbfc; border-radius: 8px; border-left: 3px solid var(--primary); }

/* 规格参数表 */
.prod-specs-table { width: 100%; border-collapse: collapse; margin: 12px 0 24px; font-size: 13px; }
.prod-specs-table th, .prod-specs-table td { padding: 10px 14px; text-align: left; border: 1px solid var(--border); }
.prod-specs-table th { background: var(--primary-light); color: var(--primary); font-weight: 700; width: 30%; white-space: nowrap; }
.prod-specs-table td { color: #555; }
.prod-specs-table tr:hover td { background: #fafbfc; }

/* 型号选型表 */
.prod-model-table { width: 100%; border-collapse: collapse; margin: 12px 0 24px; font-size: 13px; }
.prod-model-table th, .prod-model-table td { padding: 8px 12px; text-align: center; border: 1px solid var(--border); }
.prod-model-table th { background: #1a3a5c; color: #fff; font-weight: 600; font-size: 12px; }
.prod-model-table td { color: #444; }
.prod-model-table tr:nth-child(even) td { background: #f9fafb; }
.prod-model-table tr:hover td { background: #eef3f8; }

/* 应用领域 */
.prod-apps { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0 20px; }
.prod-app-tag { font-size: 12px; padding: 5px 14px; background: var(--primary-light); color: var(--primary); border-radius: 20px; font-weight: 500; }

/* 产品特性列表 */
.prod-features { margin: 12px 0 20px; }
.prod-features li { font-size: 13px; color: #555; margin-bottom: 8px; padding-left: 20px; position: relative; }
.prod-features li::before { content: '✓'; position: absolute; left: 0; color: var(--primary); font-weight: bold; }

/* 产品图片区 */
.prod-image-area { text-align: center; margin-bottom: 24px; background: #fafbfc; border-radius: 10px; padding: 24px; }
.prod-image-area img { max-width: 100%; max-height: 300px; object-fit: contain; border-radius: 6px; }

/* ==================== 页脚 ==================== */
footer { background: var(--footer-bg); color: var(--white); padding: 60px 0 40px; text-align: center; }
.footer-content { max-width: 600px; margin: 0 auto; }
.footer-content p { font-size: 14px; color: var(--footer-text); line-height: 1.8; }
.footer-brand { font-size: 18px; font-weight: 700; }
.footer-divider { color: #888; margin: 0 10px; }
.footer-copy { margin-top: 20px; }
.footer-copy-en { color: #888; font-size: 12px; }

/* ==================== 新闻动态 ==================== */
#news { padding: 80px 0; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
.news-card:hover { border-color: var(--primary); box-shadow: var(--shadow-card); }
.news-card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; background: var(--bg-light); }
.news-card-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.news-card-date { font-size: 12px; color: var(--text-muted); margin-bottom: 8px; letter-spacing: 0.5px; }
.news-card-title { font-size: 16px; font-weight: 700; color: #1a1a1a; line-height: 1.5; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-desc { font-size: 13px; color: var(--text-light); line-height: 1.7; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; }
.news-card-link { font-size: 13px; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; align-self: flex-start; transition: var(--transition); }
.news-card-link::after { content: '→'; margin-left: 6px; transition: transform 0.3s; }
.news-card:hover .news-card-link::after { transform: translateX(4px); }
.news-card-link.news-soon { color: var(--text-muted); cursor: default; font-weight: 400; }
.news-card-link.news-soon::after { content: ''; margin-left: 0; }
.news-more { text-align: center; margin-top: 36px; }
.news-more-note { font-size: 13px; color: var(--text-muted); }
.news-more .btn { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.news-more .btn:hover { background: var(--primary); color: var(--white); }

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
  .category-entries { grid-template-columns: repeat(3, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .support-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  /* 桌面导航在移动端隐藏 */
  nav.desktop-nav { display: none; }
  /* 汉堡按钮显示 */
  .hamburger { display: flex; }
  .mobile-nav-overlay { display: block; }

  nav ul { gap: 12px; }
  nav a { font-size: 13px; }
  .logo { font-size: 18px; }
  .logo-cn { font-size: 15px; }
  .hero { padding: 80px 0; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 13px; letter-spacing: 2px; }
  .hero p { font-size: 15px; }
  .hero-en { font-size: 12px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .feature-box { flex-direction: column; }
  .feature-img { width: 100%; height: auto; aspect-ratio: 16/9; }
  .feature-text { margin-left: 0; margin-top: 15px; padding-left: 15px; }
  .category-entries { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .product-title { font-size: 13px; }
  .product-desc { font-size: 11px; }
  .product-info { padding: 12px 14px 14px; }
  .contact-row { gap: 20px; }
  .support-grid { grid-template-columns: 1fr; }
  .section-padding, #about, #products, #contact, #news, #support { padding: 50px 0; }
  .modal-body { padding: 18px 16px 22px; }
  .modal-header { padding: 16px 20px; }
  .tech-table { font-size: 11px; }
  .tech-table th, .tech-table td { padding: 6px 8px; }
  .back-to-top { bottom: 20px; right: 16px; width: 40px; height: 40px; }
}

@media (max-width: 480px) {
  .top-bar { font-size: 10px; }
  .logo { font-size: 16px; }
  .logo-cn { font-size: 13px; }
  .logo-divider { margin: 0 8px; height: 18px; }
  nav ul { gap: 8px; }
  nav a { font-size: 11px; }
  .hero h1 { font-size: 22px; }
  .hero-sub { font-size: 11px; }
  .hero p { font-size: 13px; }
  .category-entries { grid-template-columns: 1fr 1fr; gap: 10px; }
  .cat-entry { padding: 20px 12px 16px; }
  .cat-entry-icon { width: 40px; height: 40px; }
  .cat-entry-name { font-size: 14px; }
  .product-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .contact-card { min-width: 100%; padding: 20px; }
  .btn { padding: 10px 20px; font-size: 14px; }
  .mobile-nav { width: 260px; }
}

/* ==================== 信赖与资质条 ==================== */
.trust-strip { background: var(--primary); color: #fff; padding: 26px 0; }
.trust-strip .container { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.trust-item { display: flex; align-items: center; gap: 12px; flex: 1 1 170px; min-width: 150px; }
.trust-item svg { width: 30px; height: 30px; flex-shrink: 0; color: rgba(255,255,255,.95); }
.trust-item .trust-text strong { display: block; font-size: 15px; font-weight: 700; letter-spacing: .3px; }
.trust-item .trust-text span { display: block; font-size: 12px; opacity: .82; margin-top: 2px; }

/* ==================== 应用领域 ==================== */
#applications { padding: 80px 0; background: var(--white); }
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.app-tile { border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 24px; background: var(--bg-light); transition: var(--transition); }
.app-tile:hover { border-color: var(--primary); box-shadow: var(--shadow-card); transform: translateY(-3px); }
.app-tile-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--primary-light); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.app-tile-icon svg { width: 26px; height: 26px; color: var(--primary); }
.app-tile h3 { font-size: 17px; color: #222; margin-bottom: 8px; }
.app-tile p { font-size: 13.5px; color: #666; line-height: 1.7; }
.app-note { margin-top: 28px; text-align: center; font-size: 14px; color: var(--text-muted); }
@media (max-width: 768px) { .app-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .app-grid { grid-template-columns: 1fr; } .trust-strip .container { flex-direction: column; align-items: flex-start; gap: 14px; } }

/* ===== 精选产品（横向滚动展示，对标骏河精机"新产品"横排） ===== */
#featured .product-grid {
  grid-auto-flow: column;
  grid-auto-columns: minmax(280px, 1fr);
  grid-template-columns: none;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
#featured .product-card { scroll-snap-align: start; }
#featured .product-grid::-webkit-scrollbar { height: 7px; }
#featured .product-grid::-webkit-scrollbar-thumb { background: #cdd8e6; border-radius: 4px; }
#featured .product-grid::-webkit-scrollbar-track { background: #f0f3f7; }
.featured-hint { text-align: center; font-size: 12.5px; color: var(--text-muted); margin-top: 14px; }

/* ===== 发展历程时间线（对标中央精机历史里程碑） ===== */
.timeline { position: relative; max-width: 880px; margin: 36px auto 0; padding-left: 30px; }
.timeline::before { content: ''; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(180deg, var(--primary), var(--accent)); }
.timeline-item { position: relative; padding: 0 0 32px 34px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before { content: ''; position: absolute; left: -25px; top: 5px; width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 3px solid var(--primary); box-shadow: 0 0 0 3px rgba(0,86,179,.12); }
.timeline-year { font-size: 20px; font-weight: 700; color: var(--primary); letter-spacing: .5px; }
.timeline-item h3 { font-size: 16px; font-weight: 600; margin: 4px 0 6px; color: #222; }
.timeline-item p { color: var(--text-muted); font-size: 14px; line-height: 1.75; }
@media (max-width: 480px) { .timeline { padding-left: 18px; } .timeline-item { padding-left: 26px; } .timeline::before { left: 6px; } .timeline-item::before { left: -21px; } }

/* ===== 常见问题 FAQ（对标骏河精机"常见问题"，原生 details 折叠） ===== */
.faq-list { max-width: 880px; margin: 36px auto 0; }
.faq-item { border: 1px solid var(--border); border-radius: 10px; margin-bottom: 12px; background: #fff; overflow: hidden; transition: box-shadow .25s; }
.faq-item[open] { box-shadow: 0 4px 16px rgba(0,86,179,.08); border-color: #c7d6ea; }
.faq-item summary { cursor: pointer; padding: 16px 22px; font-weight: 600; font-size: 15px; color: #222; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 22px; font-weight: 400; color: var(--primary); transition: transform .3s; flex-shrink: 0; }
.faq-item[open] summary::after { content: '−'; }
.faq-answer { padding: 0 22px 18px; color: #666; font-size: 14px; line-height: 1.85; }

/* ===== 新闻分类标签 ===== */
.news-card-cat { display: inline-block; font-size: 11.5px; padding: 2px 10px; border-radius: 20px; background: #eaf1fb; color: var(--primary); margin-bottom: 10px; font-weight: 600; }

/* ===== 服务行业全景（对标高明铁应用行业覆盖） ===== */
.industry-cloud { display:flex; flex-wrap:wrap; gap:10px; justify-content:center; margin:28px auto 0; max-width:920px; }
.industry-chip { font-size:13.5px; padding:8px 16px; border:1px solid var(--border); border-radius:24px; background:#fff; color:#444; transition:.25s; }
.industry-chip:hover { border-color:var(--primary); color:var(--primary); background:var(--primary-light); }
.industry-stats { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; max-width:720px; margin:34px auto 0; text-align:center; }
.industry-stat h3 { font-size:30px; font-weight:800; color:var(--primary); }
.industry-stat p { font-size:13.5px; color:var(--text-muted); margin-top:4px; }
@media (max-width:480px){ .industry-stats{grid-template-columns:1fr;} }

/* ===== 客户案例（对标高明铁方案/成功案例） ===== */
.case-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:22px; margin-top:36px; }
.case-card { border:1px solid var(--border); border-radius:12px; padding:24px; background:#fff; box-shadow:var(--shadow-sm); transition:.28s; display:flex; flex-direction:column; }
.case-card:hover { box-shadow:var(--shadow-card); transform:translateY(-4px); }
.case-tag { display:inline-block; font-size:11.5px; padding:3px 11px; border-radius:20px; background:var(--primary-light); color:var(--primary); font-weight:600; margin-bottom:14px; align-self:flex-start; }
.case-card h3 { font-size:16.5px; color:#222; margin-bottom:14px; line-height:1.5; }
.case-row { font-size:13.5px; line-height:1.85; margin-bottom:8px; color:#555; }
.case-row b { color:var(--primary); font-weight:600; }
.case-result { margin-top:auto; padding-top:12px; border-top:1px dashed var(--border); font-size:13.5px; color:#1a7a4d; font-weight:600; }
@media (max-width:900px){ .case-grid{grid-template-columns:1fr;} }

/* ===== 全球服务网络（对标高明铁全球据点） ===== */
.network-wrap { display:grid; grid-template-columns:1.05fr .95fr; gap:34px; align-items:center; margin-top:36px; }
.network-map { background:linear-gradient(135deg,#0a2f5c,#0a4a8f); border-radius:14px; padding:18px; }
.network-map svg { width:100%; height:auto; display:block; }
.net-halo { fill:rgba(255,213,74,.6); animation:halo 2.4s ease-in-out infinite; }
@keyframes halo { 0%,100%{opacity:.55} 50%{opacity:0} }
.region-list { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.region-card { border:1px solid var(--border); border-radius:10px; padding:15px 17px; background:#fff; }
.region-card h4 { font-size:14.5px; color:var(--primary); margin-bottom:6px; display:flex; align-items:center; gap:8px; }
.region-card .dot { width:9px; height:9px; border-radius:50%; background:var(--accent); flex-shrink:0; }
.region-card p { font-size:12.5px; color:var(--text-muted); line-height:1.7; }
@media (max-width:900px){ .network-wrap{grid-template-columns:1fr;} .region-list{grid-template-columns:1fr;} }

/* ===== 认证与合作伙伴 logo 墙（对标高明铁 trusted-partner） ===== */
.cert-row { display:flex; flex-wrap:wrap; gap:16px; justify-content:center; margin-top:30px; }
.cert-badge { width:132px; height:80px; border:1px solid var(--border); border-radius:10px; background:#fff; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:5px; }
.cert-badge .cert-ico { font-size:22px; }
.cert-badge .cert-name { font-size:12.5px; font-weight:600; color:#444; }
.cert-badge .cert-sub { font-size:10.5px; color:var(--text-muted); }
.partner-wall { display:grid; grid-template-columns:repeat(6,1fr); gap:14px; margin-top:22px; }
.partner-tile { height:74px; border:1px dashed var(--border); border-radius:10px; background:#fafbfc; display:flex; align-items:center; justify-content:center; color:var(--text-muted); font-size:12.5px; text-align:center; }
.cert-foot { text-align:center; font-size:12.5px; color:var(--text-muted); margin-top:22px; }
@media (max-width:768px){ .partner-wall{grid-template-columns:repeat(3,1fr);} }
@media (max-width:480px){ .partner-wall{grid-template-columns:repeat(2,1fr);} }

/* ===== 内容区块统一垂直留白（补齐缺失 padding，规范排版节奏） ===== */
#industries, #cases, #network, #partners, #milestones, #faq { padding: 80px 0; }
@media (max-width: 768px) {
  #industries, #cases, #network, #partners, #milestones, #faq { padding: 50px 0; }
}

/* ==================== 布局节奏：区块背景交替 ==================== */
.section--tint   { background: var(--tint); }
.section--tint-2 { background: var(--tint-2); }
.stats-section { padding: 52px 0; }

/* ==================== 应用领域卡片 ==================== */
.app-tile { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 22px; text-align: center; transition: var(--transition); }
.app-tile:hover { border-color: var(--primary); box-shadow: var(--shadow-card); transform: translateY(-4px); }
.app-tile-icon { width: 52px; height: 52px; margin: 0 auto 16px; display: flex; align-items: center; justify-content: center; background: var(--primary-light); border-radius: 50%; color: var(--primary); }
.app-tile h3 { font-size: 16px; font-weight: 700; color: var(--heading); margin-bottom: 8px; }
.app-tile p { font-size: 13px; color: var(--text-light); line-height: 1.65; }
.app-note { text-align: center; margin-top: 26px; font-size: 13.5px; color: var(--text-muted); }

/* ==================== 卡片悬浮动效增强 ==================== */
.cat-entry:hover { border-color: var(--primary); box-shadow: var(--shadow-card); transform: translateY(-5px); }
.feature-box { transition: var(--transition); }
.feature-box:hover { border-color: var(--primary-border); box-shadow: var(--shadow-card); transform: translateY(-3px); }

/* ==================== 品牌 CTA 引导带 ==================== */
.cta-band { background: linear-gradient(120deg, #004a99 0%, #0056b3 55%, #0a6ad1 100%); color: #fff; padding: 56px 0; margin-top: 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-text h2 { font-size: 26px; font-weight: 700; letter-spacing: .5px; margin: 0; }
.cta-text p { opacity: .85; margin-top: 8px; font-size: 15px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cta-btn { background: #fff; color: var(--primary); border-radius: var(--radius); }
.cta-btn:hover { background: #eef4fb; }
.cta-btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.55); border-radius: var(--radius); }
.cta-btn-ghost:hover { background: rgba(255,255,255,.12); }
@media (max-width: 768px) {
  .cta-inner { flex-direction: column; text-align: center; align-items: center; }
  .cta-text h2 { font-size: 22px; }
}

/* ==================== 视觉美化增强层 ==================== */

/* —— Hero：景深 / 入场 / 徽章 / 滚动提示 —— */
.hero::before {
  content: ''; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(0,86,179,.30), transparent 60%),
    radial-gradient(ellipse at 50% 100%, rgba(0,20,50,.42), transparent 55%);
}
.hero .container { position: relative; z-index: 2; }
.hero h1, .hero p, .hero a { animation: heroIn .85s cubic-bezier(.22,.61,.36,1) both; }
.hero h1 { animation-delay: .08s; text-shadow: 0 2px 18px rgba(0,0,0,.35); }
.hero p  { animation-delay: .22s; text-shadow: 0 1px 10px rgba(0,0,0,.30); }
.hero a  { animation-delay: .38s; }
@keyframes heroIn { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

.hero-badge {
  display: inline-block; margin-bottom: 22px; padding: 7px 18px;
  font-size: 13px; letter-spacing: 2px; color: #fff;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.35);
  border-radius: 30px; backdrop-filter: blur(4px);
}
.hero-badge::before {
  content: ''; display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: #7fd0ff; margin-right: 9px; vertical-align: middle; box-shadow: 0 0 8px #7fd0ff;
}
.hero-scroll {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  width: 26px; height: 42px; border: 2px solid rgba(255,255,255,.55); border-radius: 14px; z-index: 2;
}
.hero-scroll span {
  position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; border-radius: 2px;
  background: #fff; transform: translateX(-50%); animation: heroScroll 1.6s infinite;
}
@keyframes heroScroll {
  0% { opacity: 0; transform: translate(-50%, 0); }
  40% { opacity: 1; }
  80% { opacity: 0; transform: translate(-50%, 14px); }
  100% { opacity: 0; }
}

/* —— 按钮：渐变 + 悬浮上浮 —— */
.btn { background: linear-gradient(135deg, #c00000, #e23b1e); box-shadow: 0 6px 18px rgba(192,0,0,.28); }
.btn:hover { background: linear-gradient(135deg, #d41313, #f0572c); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(192,0,0,.36); }
.hero a.btn[style*="transparent"]:hover { background: rgba(255,255,255,.14) !important; transform: translateY(-2px); }

/* —— 数据看板：磨砂玻璃卡片 + 渐变数字 —— */
.stats-section { background: linear-gradient(180deg, #eef3fa, #f6f9fc); }
.stat-item {
  background: rgba(255,255,255,.92); backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,.8); border-radius: var(--radius-lg);
  padding: 28px 16px; box-shadow: 0 8px 24px rgba(0,86,179,.08);
  position: relative; overflow: hidden; transition: transform .3s ease, box-shadow .3s ease;
}
.stat-item::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary), #3b82c4);
}
.stat-item:hover { transform: translateY(-6px); box-shadow: 0 14px 34px rgba(0,86,179,.16); }
.stat-item h3 {
  background: linear-gradient(120deg, #0056b3, #2f8fd6);
  -webkit-background-clip: text; background-clip: text; color: transparent; font-size: 34px;
}
.stat-item p { margin-top: 8px; }

/* —— 区块标题 kicker 强化 —— */
.section-title h2 .en-text { letter-spacing: 3px; }

/* —— 浅色区块极淡装饰光晕 —— */
.section--tint, .section--tint-2 { position: relative; overflow: hidden; }
.section--tint::before, .section--tint-2::before {
  content: ''; position: absolute; width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,86,179,.05), transparent 70%);
  top: -120px; right: -100px; pointer-events: none;
}
.section--tint::after, .section--tint-2::after {
  content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,86,179,.04), transparent 70%);
  bottom: -120px; left: -80px; pointer-events: none;
}

/* —— 页脚渐变顶边 —— */
footer { border-top: 3px solid transparent; border-image: linear-gradient(90deg, var(--primary), #3b82c4, var(--primary)) 1; }
.footer-brand { letter-spacing: .5px; }

/* —— 移动端适配 —— */
@media (max-width: 768px) {
  .hero { padding-bottom: 96px; }
  .hero-scroll { bottom: 18px; }
  .hero-badge { font-size: 11px; padding: 6px 14px; margin-bottom: 16px; }
}