/* ========== JoySSL 风格全局样式 ========== */

/* 重置和基础 */
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif; font-size: 14px; color: #333; background: #f5f7fa; line-height: 1.6; }
a { color: #333; text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--primary-orange); }
ul, ol { list-style: none; }
img { max-width: 100%; border: 0; vertical-align: middle; }

/* CSS 变量 - 元软Metasoft 官网色系 */
:root {
  --digi-primary: #0174C3;
  --digi-dark-blue: #001524;
  --digi-light-blue: #0174C3;
  --digi-card-bg: #f0f2f5;
  --digi-text-main: #333333;
  --digi-text-desc: #666666;
  --digi-border: #dce0e5;
  --primary-blue: #001524;
  --primary-orange: #0174C3;
  --light-blue: #0174C3;
  --accent-blue: #0174C3;
  --bg-light: #f0f2f5;
  --text-dark: #333333;
  --text-gray: #666666;
  --border-color: #dce0e5;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
  --radius: 8px;
  --transition: all 0.3s ease;
}

/* ========== 容器 ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
.clearfix::after { content: ''; display: block; clear: both; }

/* ========== 导航栏 - DigiCert 风格 ========== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: #fff; border-bottom: 1px solid var(--digi-border); }
.header-top { display: flex; align-items: center; justify-content: space-between; height: 64px; padding: 0 40px; max-width: 1200px; margin: 0 auto; }
.logo { font-size: 24px; font-weight: 700; color: var(--digi-dark-blue); display: flex; align-items: center; gap: 8px; text-decoration: none; }
.logo:hover { color: var(--digi-dark-blue); }
.logo .shield-icon { width: 36px; height: 36px; background: var(--digi-dark-blue); color: #fff; border-radius: 8px; display: flex; align-items: center; justify-content: center; }
.logo .logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo .logo-text .brand { font-size: 20px; font-weight: 700; letter-spacing: 1px; color: var(--digi-dark-blue); }
.logo .logo-text .slogan { font-size: 11px; color: var(--digi-text-desc); font-weight: 400; }

/* 主导航 */
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { color: var(--digi-text-main); text-decoration: none; font-size: 15px; font-weight: 500; transition: var(--transition); padding: 8px 0; position: relative; }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--digi-primary); transition: width 0.3s; }
.nav-links a:hover, .nav-links a.active { color: var(--digi-primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

/* 右侧操作 */
.header-actions { display: flex; gap: 8px; align-items: center; }
.btn-contact { padding: 8px 24px; background: var(--digi-primary); color: #fff; border: none; border-radius: 20px; cursor: pointer; font-size: 14px; font-weight: 600; text-decoration: none; transition: var(--transition); display: inline-block; }
.btn-contact:hover { background: #0058a8; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,112,210,0.3); color: #fff; }
.icon-btn { width: 38px; height: 38px; border: none; background: transparent; border-radius: 50%; cursor: pointer; color: var(--digi-text-desc); display: flex; align-items: center; justify-content: center; transition: var(--transition); text-decoration: none; position: relative; }
.icon-btn:hover { background: var(--digi-card-bg); color: var(--digi-primary); }

/* 搜索展开条 */
.header-search-bar { display: none; padding: 12px 40px; max-width: 1400px; margin: 0 auto; border-top: 1px solid var(--digi-border); }
.header-search-bar.show { display: flex; align-items: center; gap: 8px; }
.header-search-bar input { flex: 1; height: 40px; border: 1px solid var(--digi-border); border-radius: 8px; padding: 0 16px; font-size: 14px; outline: none; }
.header-search-bar input:focus { border-color: var(--digi-primary); box-shadow: 0 0 0 3px rgba(0,112,210,0.1); }

/* 登录/注册按钮 */
.btn-login { padding: 7px 22px; border: 1px solid var(--digi-primary); color: var(--digi-primary); border-radius: 20px; background: transparent; cursor: pointer; font-size: 14px; text-decoration: none; transition: var(--transition); display: inline-block; }
.btn-login:hover { background: var(--digi-primary); color: #fff; }
.btn-register { padding: 7px 22px; background: var(--digi-primary); color: #fff; border: none; border-radius: 20px; cursor: pointer; font-size: 14px; text-decoration: none; transition: var(--transition); display: inline-block; }
.btn-register:hover { background: #0058a8; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,112,210,0.3); }

/* 已登录用户 */
.user-info { display: flex; align-items: center; gap: 8px; cursor: pointer; position: relative; }
.user-avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--digi-dark-blue); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 600; }
.user-name { font-size: 14px; color: var(--digi-text-main); font-weight: 500; }
.user-dropdown { display: none; position: absolute; top: 48px; right: 0; background: #fff; border: 1px solid var(--digi-border); border-radius: var(--radius); box-shadow: var(--shadow-lg); min-width: 160px; overflow: hidden; z-index: 100; }
.user-dropdown.show { display: block; }
.user-dropdown a { display: block; padding: 10px 16px; color: var(--digi-text-desc); font-size: 14px; text-decoration: none; transition: var(--transition); }
.user-dropdown a:hover { background: var(--digi-card-bg); color: var(--digi-primary); }

/* 汉堡菜单（移动端） */
.nav-toggle { display: none; width: 40px; height: 40px; border: none; background: none; cursor: pointer; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--digi-dark-blue); transition: var(--transition); border-radius: 2px; }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ========== 主体区域 ========== */
.main-content { margin-top: 64px; min-height: calc(100vh - 64px); }

/* ========== Banner 轮播 ========== */
.banner { position: relative; height: 480px; overflow: hidden; background: var(--primary-blue); }
.banner-slides { display: flex; transition: transform 0.6s ease; height: 100%; }
.banner-slide { min-width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; flex-direction: column; color: #fff; text-align: center; padding: 0 40px; }
.banner-slide h1 { font-size: 42px; font-weight: 700; margin-bottom: 16px; text-shadow: 0 2px 4px rgba(0,0,0,0.3); }
.banner-slide p { font-size: 18px; opacity: 0.9; margin-bottom: 32px; max-width: 600px; line-height: 1.8; }
.banner-slide .banner-highlight { color: var(--primary-orange); font-weight: 700; }
.banner-dots { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); display: flex; gap: 12px; }
.banner-dots span { width: 32px; height: 4px; background: rgba(255,255,255,0.4); border-radius: 2px; cursor: pointer; transition: var(--transition); }
.banner-dots span.active { background: var(--primary-orange); width: 48px; }
.banner-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 48px; height: 48px; background: rgba(255,255,255,0.15); border: none; border-radius: 50%; color: #fff; font-size: 20px; cursor: pointer; backdrop-filter: blur(4px); transition: var(--transition); display: flex; align-items: center; justify-content: center; }
.banner-arrow:hover { background: rgba(255,255,255,0.3); }
.banner-arrow.prev { left: 20px; }
.banner-arrow.next { right: 20px; }

/* ========== 特色数据条 ========== */
.feature-bar { background: #fff; padding: 32px 40px; display: flex; justify-content: space-around; box-shadow: var(--shadow); }
.feature-item { text-align: center; }
.feature-item .icon { font-size: 36px; margin-bottom: 8px; }
.feature-item h4 { font-size: 18px; color: var(--text-dark); margin-bottom: 4px; }
.feature-item h4 span { color: var(--primary-orange); font-weight: 700; }
.feature-item p { font-size: 13px; color: var(--text-gray); }

/* ========== 通用按钮 ========== */
.btn-primary { display: inline-block; padding: 12px 32px; background: var(--primary-orange); color: #fff; border: none; border-radius: 24px; font-size: 15px; cursor: pointer; text-decoration: none; transition: var(--transition); font-weight: 500; }
.btn-primary:hover { background: #1d4ed8; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(37,99,235,0.4); color: #fff; }
.btn-outline { display: inline-block; padding: 12px 32px; border: 2px solid var(--primary-orange); color: var(--primary-orange); border-radius: 24px; font-size: 15px; cursor: pointer; text-decoration: none; transition: var(--transition); background: transparent; }
.btn-outline:hover { background: var(--primary-orange); color: #fff; }

/* ========== 区块标题 ========== */
.section { padding: 60px 40px; }
.section-white { background: #fff; }
.section-gray { background: var(--bg-light); }
.section-blue { background: var(--primary-blue); color: #fff; }
.section-title { text-align: center; margin-bottom: 40px; }
.section-title h2 { font-size: 32px; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; }
.section-title h2 span { color: var(--primary-orange); }
.section-title p { font-size: 16px; color: var(--text-gray); }
.section-blue .section-title h2 { color: #fff; }
.section-blue .section-title p { color: rgba(255,255,255,0.7); }

/* ========== 产品卡片 ========== */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1200px; margin: 0 auto; }
.product-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; transition: var(--transition); border: 1px solid transparent; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary-orange); }
.product-card .card-head { padding: 20px 24px 16px; text-align: center; border-bottom: 1px solid #f0f0f0; }
.product-card .brand-tag { display: inline-block; padding: 2px 12px; border-radius: 12px; font-size: 12px; font-weight: 600; margin-bottom: 8px; }
.brand-sdssl { background: #eff6ff; color: var(--primary-orange); }
.brand-joyssl { background: #eff6ff; color: var(--primary-orange); }
.brand-digicert { background: #e3f2fd; color: #1565c0; }
.brand-sectigo { background: #e8f5e9; color: #2e7d32; }
.brand-geotrust { background: #fce4ec; color: #c62828; }
.brand-letsencrypt { background: #e0f2f1; color: #00695c; }
.brand-globalssl { background: #f3e5f5; color: #7b1fa2; }
.product-card .card-head h3 { font-size: 16px; font-weight: 600; color: var(--text-dark); margin-bottom: 4px; }
.product-card .card-head .type-tag { font-size: 12px; color: var(--text-gray); }
.product-card .card-body { padding: 16px 24px; }
.product-card .features { list-style: none; padding: 0; margin: 0 0 16px; }
.product-card .features li { padding: 4px 0; font-size: 13px; color: var(--text-gray); display: flex; align-items: center; gap: 6px; }
.product-card .features li::before { content: "\2713"; color: #4caf50; font-weight: 700; font-size: 14px; }
.product-card .card-foot { padding: 12px 24px 20px; text-align: center; }
.product-card .price { font-size: 28px; font-weight: 700; color: var(--primary-orange); }
.product-card .price small { font-size: 14px; font-weight: 400; color: var(--text-gray); }
.product-card .price .unit { font-size: 14px; color: var(--text-gray); }

/* ========== Tab 切换 ========== */
.tab-nav { display: flex; justify-content: center; gap: 0; margin-bottom: 32px; border-bottom: 2px solid #e0e0e0; }
.tab-nav a { padding: 12px 32px; text-decoration: none; font-size: 15px; color: var(--text-gray); border-bottom: 3px solid transparent; margin-bottom: -2px; transition: var(--transition); font-weight: 500; }
.tab-nav a:hover { color: var(--primary-orange); }
.tab-nav a.active { color: var(--primary-orange); border-bottom-color: var(--primary-orange); }

/* ========== 合作伙伴 Logo 墙 ========== */
.partner-wall { display: flex; flex-wrap: wrap; justify-content: center; gap: 32px; max-width: 1200px; margin: 0 auto; }
.partner-item { width: 140px; height: 56px; background: #f5f5f5; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 14px; color: #999; transition: var(--transition); }
.partner-item:hover { background: #fff; box-shadow: var(--shadow); }

/* ========== 步骤流程 ========== */
.steps { display: flex; justify-content: center; gap: 0; max-width: 1000px; margin: 0 auto; position: relative; }
.steps::before { content: ''; position: absolute; top: 40px; left: 10%; right: 10%; height: 2px; background: #e0e0e0; }
.step-item { flex: 1; text-align: center; position: relative; }
.step-item .step-num { width: 80px; height: 80px; background: var(--primary-orange); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 32px; font-weight: 700; margin: 0 auto 16px; position: relative; z-index: 1; }
.step-item h4 { font-size: 16px; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; }
.step-item p { font-size: 13px; color: var(--text-gray); padding: 0 16px; }

/* ========== 面包屑 ========== */
.breadcrumb { background: #fff; padding: 14px 0; border-bottom: 1px solid #f0f0f0; font-size: 13px; color: var(--text-gray); }
.breadcrumb a { color: var(--text-gray); }
.breadcrumb a:hover { color: var(--primary-orange); }
.breadcrumb .sep { margin: 0 6px; color: #ccc; }

/* ========== 通用卡片 ========== */
.card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform 0.25s, box-shadow 0.25s; border: 1px solid #f1f5f9; }
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ========== 标签 ========== */
.tag { display: inline-block; padding: 3px 10px; border-radius: 4px; font-size: 12px; font-weight: 500; }
.tag-dv { background: #dbeafe; color: #1e40af; }
.tag-ov { background: #d1fae5; color: #065f46; }
.tag-ev { background: #fce7f3; color: #9d174d; }
.tag-wildcard { background: #fef3c7; color: #92400e; }
.tag-multi { background: #e0e7ff; color: #3730a3; }
.tag-default { background: #f3f4f6; color: #4b5563; }

/* ========== 状态 ========== */
.status { display: inline-block; padding: 3px 10px; border-radius: 4px; font-size: 12px; font-weight: 500; }
.status-pending { background: #fef3c7; color: #92400e; }
.status-paid { background: #dbeafe; color: #1e40af; }
.status-processing { background: #e0e7ff; color: #3730a3; }
.status-issued { background: #d1fae5; color: #065f46; }
.status-cancelled { background: #f3f4f6; color: #6b7280; }
.status-expired { background: #fee2e2; color: #991b1b; }

/* ========== 分页 ========== */
.pagination { text-align: center; margin: 36px 0; }
.pagination ul { display: inline-block; }
.pagination li { display: inline-block; margin: 0 3px; }
.pagination a, .pagination span { display: block; min-width: 38px; height: 38px; line-height: 38px; padding: 0 10px; border: 1px solid #e5e7eb; border-radius: 6px; color: #374151; background: #fff; }
.pagination a:hover { border-color: var(--primary-orange); color: var(--primary-orange); }
.pagination li.active span { background: var(--primary-orange); border-color: var(--primary-orange); color: #fff; }
.pagination li.ellipsis span { border: none; background: transparent; }

/* ========== 表格 ========== */
.data-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; }
.data-table th, .data-table td { padding: 14px 16px; text-align: left; border-bottom: 1px solid #f1f5f9; }
.data-table th { background: var(--bg-light); color: #4b5563; font-weight: 600; font-size: 13px; }
.data-table td { color: #374151; font-size: 14px; }
.data-table tr:hover td { background: #fafbfc; }
.data-table .empty { text-align: center; color: #9ca3af; padding: 40px; }

/* ========== 表单 ========== */
.form-group { margin-bottom: 20px; }
.form-label { display: block; margin-bottom: 6px; font-size: 14px; color: #374151; font-weight: 500; }
.form-input { width: 100%; height: 42px; border: 1px solid #e5e7eb; border-radius: 6px; padding: 0 14px; font-size: 14px; outline: none; transition: border-color 0.2s; }
.form-input:focus { border-color: var(--primary-orange); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.form-textarea { width: 100%; min-height: 120px; border: 1px solid #e5e7eb; border-radius: 6px; padding: 10px 14px; font-size: 14px; outline: none; resize: vertical; }
.form-textarea:focus { border-color: var(--primary-orange); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.form-select { width: 100%; height: 42px; border: 1px solid #e5e7eb; border-radius: 6px; padding: 0 14px; font-size: 14px; outline: none; background: #fff; }
.form-hint { font-size: 12px; color: var(--text-gray); margin-top: 4px; }
.form-error { color: #ef4444; font-size: 12px; margin-top: 4px; }

/* ========== 统计卡片 ========== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 30px; }
.stat-card { background: #fff; border-radius: var(--radius); padding: 24px; text-align: center; border: 1px solid #f1f5f9; box-shadow: var(--shadow); }
.stat-card .stat-icon { width: 48px; height: 48px; border-radius: 10px; display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; font-size: 20px; }
.stat-card .stat-icon.blue { background: #dbeafe; color: #1e40af; }
.stat-card .stat-icon.green { background: #d1fae5; color: #065f46; }
.stat-card .stat-icon.purple { background: #e0e7ff; color: #3730a3; }
.stat-card .stat-icon.orange { background: #fef3c7; color: #92400e; }
.stat-card .stat-value { font-size: 28px; font-weight: 700; color: var(--text-dark); margin-bottom: 4px; }
.stat-card .stat-label { font-size: 14px; color: var(--text-gray); }

/* ========== 底部 ========== */
.footer { background: var(--primary-blue); color: rgba(255,255,255,0.7); padding: 48px 40px 0; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; max-width: 1200px; margin: 0 auto 40px; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 20px; position: relative; padding-bottom: 10px; font-weight: 600; }
.footer-col h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 32px; height: 2px; background: var(--primary-orange); }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 14px; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--primary-orange); }
.footer-brand .footer-logo { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.footer-brand .footer-logo .shield-icon { width: 32px; height: 32px; background: var(--primary-orange); color: #fff; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.55); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,0.4); }
.footer-bottom a { color: rgba(255,255,255,0.5); transition: color 0.3s; }
.footer-bottom a:hover { color: var(--primary-orange); }

/* ========== 浮动客服 ========== */
.float-service { position: fixed; right: 20px; bottom: 80px; width: 56px; height: 56px; background: var(--primary-orange); border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 16px rgba(255,107,53,0.4); cursor: pointer; z-index: 999; transition: var(--transition); color: #fff; font-size: 24px; text-decoration: none; }
.float-service:hover { transform: scale(1.1); color: #fff; }
.float-service .chat-tooltip { position: absolute; right: 68px; bottom: 0; background: #fff; color: #333; padding: 8px 16px; border-radius: 6px; font-size: 13px; white-space: nowrap; box-shadow: var(--shadow-lg); opacity: 0; pointer-events: none; transition: var(--transition); }
.float-service .chat-tooltip::after { content: ''; position: absolute; right: -6px; bottom: 20px; border: 6px solid transparent; border-left-color: #fff; }
.float-service:hover .chat-tooltip { opacity: 1; }

/* ========== 回到顶部 ========== */
.float-top { position: fixed; right: 20px; bottom: 150px; width: 40px; height: 40px; background: #fff; border: 1px solid #ddd; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 999; font-size: 16px; color: #666; transition: var(--transition); text-decoration: none; }
.float-top:hover { border-color: var(--primary-orange); color: var(--primary-orange); }

/* ========== 聊天窗口（占位） ========== */
.chat-window { position: fixed; right: 20px; bottom: 148px; width: 360px; height: 480px; background: #fff; border-radius: 12px; box-shadow: var(--shadow-lg); z-index: 1000; display: none; flex-direction: column; overflow: hidden; }
.chat-window.open { display: flex; }
.chat-window .chat-header { background: var(--primary-blue); color: #fff; padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; }
.chat-window .chat-header h4 { font-size: 16px; font-weight: 600; }
.chat-window .chat-close { background: none; border: none; color: #fff; font-size: 20px; cursor: pointer; opacity: 0.8; }
.chat-window .chat-close:hover { opacity: 1; }
.chat-window .chat-body { flex: 1; padding: 20px; display: flex; align-items: center; justify-content: center; color: var(--text-gray); font-size: 14px; background: var(--bg-light); }
.chat-window .chat-input { padding: 12px 16px; border-top: 1px solid #eee; display: flex; gap: 8px; }
.chat-window .chat-input input { flex: 1; height: 40px; border: 1px solid #e0e0e0; border-radius: 20px; padding: 0 16px; font-size: 14px; outline: none; }
.chat-window .chat-input input:focus { border-color: var(--primary-orange); }
.chat-window .chat-input button { height: 40px; padding: 0 20px; background: var(--primary-orange); color: #fff; border: none; border-radius: 20px; cursor: pointer; font-size: 14px; }
.chat-window .chat-input button:hover { background: #e85a28; }

/* ========== 移动端导航面板 ========== */
.mobile-menu { display: none; position: fixed; top: 64px; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); z-index: 999; }
.mobile-menu.open { display: block; }
.mobile-menu-panel { background: #fff; width: 280px; height: 100%; overflow-y: auto; padding: 16px 0; box-shadow: var(--shadow-lg); }
.mobile-menu-panel a { display: block; padding: 14px 24px; color: #333; font-size: 15px; text-decoration: none; border-bottom: 1px solid #f5f5f5; transition: var(--transition); }
.mobile-menu-panel a:hover, .mobile-menu-panel a.active { color: var(--primary-orange); background: #fff8f5; }
.mobile-menu-panel .menu-divider { height: 1px; background: #f0f0f0; margin: 8px 24px; }
.mobile-menu-panel .menu-section-title { padding: 12px 24px 8px; font-size: 12px; color: var(--text-gray); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .header-top { padding: 0 20px; }
  .sub-nav { padding: 0 20px; }
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-bar { padding: 24px 20px; }
  .section { padding: 48px 20px; }
  .footer { padding: 40px 20px 0; }
}

@media (max-width: 768px) {
  .header-top { padding: 0 16px; height: 56px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn-contact { display: none; }
  .header-search-bar { padding: 10px 16px; }
  .logo-text .slogan { display: none; }
  .logo-text .brand { font-size: 16px; }
  .logo .shield-icon { width: 30px; height: 30px; }
  .icon-btn { width: 34px; height: 34px; }
  .main-content { margin-top: 56px; }
  .sub-nav { display: none; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .banner { height: 320px; }
  .banner-slide h1 { font-size: 24px; }
  .banner-slide p { font-size: 15px; margin-bottom: 20px; }
  .section { padding: 40px 16px; }
  .section-title h2 { font-size: 24px; }
  .feature-bar { flex-wrap: wrap; padding: 20px 16px; gap: 16px; }
  .feature-item { width: 45%; }
  .steps { flex-direction: column; gap: 24px; }
  .steps::before { display: none; }
  .tab-nav { flex-wrap: wrap; }
  .tab-nav a { padding: 10px 16px; font-size: 13px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-card { padding: 16px; }
  .stat-card .stat-value { font-size: 22px; }
  .data-table th, .data-table td { padding: 10px 12px; font-size: 13px; }
  .mobile-menu { top: 56px; }
  .mobile-menu-panel a:hover, .mobile-menu-panel a.active { color: var(--digi-primary); background: var(--digi-card-bg); }
}

@media (max-width: 480px) {
  .product-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .feature-item { width: 100%; }
  .btn-primary, .btn-outline { padding: 10px 24px; font-size: 14px; }
  .header-actions { gap: 4px; }
  .logo-text .brand { font-size: 14px; }
  .container { padding: 0 12px; }
}