/* ===== 翔翼互联统一风格 CSS ===== */
/* 基于首页蓝灰色调，用于所有子页面 */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #7395BC;
  --primary-dark: #5A7FA3;
  --primary-light: #7CA7C8;
  --primary-bg: #EDF3F8;
  --text-primary: #1D2129;
  --text-secondary: #4E5969;
  --text-tertiary: #86909C;
  --bg-white: #FFFFFF;
  --bg-light: #F5F7FA;
  --border: #E5E6EB;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
  --radius: 8px;
  --radius-lg: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--text-primary);
  background: linear-gradient(180deg, #F0F5FA 0%, #F5F7FA 100%);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 6px rgba(0,0,0,0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo img { height: 44px; display: block; }

.nav { display: flex; gap: 38px; align-items: center; }
.nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 16px;
  transition: all 0.2s ease;
  position: relative;
}
.nav a:hover, .nav a.active { color: var(--primary); }
.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -8px; left: 0; right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

.header-contact {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-bg);
  border-radius: 50px;
  padding: 8px 18px;
  transition: all 0.3s ease;
}
.header-contact:hover { background: var(--primary); color: white; }
.header-contact .icon-bg {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.3s ease;
}
.header-contact:hover .icon-bg { background: white; }
.header-contact:hover .icon-bg svg { stroke: var(--primary); }
.header-contact .icon-bg svg {
  width: 16px; height: 16px;
  fill: none; stroke: white;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.header-contact span:last-child {
  font-weight: 600;
  font-size: 16px;
  color: var(--primary);
  transition: all 0.3s ease;
}
.header-contact:hover span:last-child { color: white; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px; height: 32px;
  background: none; border: none; cursor: pointer;
  padding: 4px; z-index: 1100;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Page Header ===== */
.page-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 52px 0 56px;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}
.page-header::before,
.page-header::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.10) 0%, transparent 70%);
  pointer-events: none;
}
.page-header::before {
  width: 600px; height: 600px;
  top: -220px; right: -120px;
}
.page-header::after {
  width: 360px; height: 360px;
  bottom: -140px; left: -80px;
  background: radial-gradient(circle, rgba(255,255,255,0.07) 0%, transparent 70%);
}
.page-header .container { position: relative; z-index: 1; }
.page-title {
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}
.page-subtitle {
  font-size: 15px;
  opacity: 0.92;
  font-weight: 400;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  font-size: 14px;
  color: var(--text-tertiary);
}
.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { margin: 0 8px; }

/* ===== Main Content ===== */
.page-content {
  padding: 0 24px 70px;
}
.content-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 40px;
  align-items: flex-start;
}

/* Sidebar */
.page-sidebar {
  width: 260px;
  flex-shrink: 0;
  position: sticky;
  top: 88px;
}
.sidebar-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow: hidden;
}
.sidebar-title {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.sidebar-menu { list-style: none; padding: 8px 0; }
.sidebar-menu li {
  border-bottom: 1px solid var(--border);
}
.sidebar-menu li:last-child {
  border-bottom: none;
}
.sidebar-menu li a {
  display: block;
  padding: 11px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
}
.sidebar-menu li a:hover {
  color: var(--primary);
  background: var(--primary-bg);
  border-left-color: var(--primary);
}
.sidebar-menu li a.active {
  color: var(--primary);
  background: transparent;
  border-left-color: var(--primary);
  font-weight: 600;
}
.sidebar-category {
  margin: 20px 20px 8px;
  padding: 0;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-dark);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0.9;
}
.sidebar-category::before,
.sidebar-category::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124, 167, 200, 0.55));
}
.sidebar-category::after {
  background: linear-gradient(90deg, rgba(124, 167, 200, 0.55), transparent);
}
.sidebar-category + li a {
  padding-top: 10px;
}

/* 侧边栏联系卡：保留图片，隐藏文字联系信息 */
.sidebar-contact-section {
  display: block;
  border-top: none;
  background: var(--bg-white);
  text-align: center;
}
.sidebar-contact-section img {
  width: 80%;
  max-width: 180px;
  height: auto;
  display: block;
  margin: 22px auto 6px;
  border: none;
  box-shadow: none;
  border-radius: 0;
}
.sidebar-contact-list {
  display: none;
}
.sidebar-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
}
.sidebar-contact-item:last-child { border-bottom: none; }
.sidebar-contact-icon {
  width: 32px; height: 32px;
  flex-shrink: 0;
  background: var(--primary-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}
.sidebar-contact-icon svg {
  width: 16px; height: 16px;
  fill: none; stroke: currentColor;
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}
.sidebar-contact-text {
  flex: 1;
  min-width: 0;
}
.sidebar-contact-text .label {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 2px;
}
.sidebar-contact-text .value {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 600;
  word-break: break-all;
}

/* Main area */
.page-main {
  flex: 1;
  min-width: 0;
}
.content-wrapper .page-main:only-child {
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}
.content-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  padding: 40px 48px;
}
.content-card h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  margin-bottom: 28px;
  line-height: 1.3;
}
.content-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--primary-dark);
  margin: 30px 0 14px;
}
.content-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 18px;
  text-align: justify;
}
.content-card > p:first-of-type {
  font-size: 16px;
  color: var(--text-primary);
}
.content-card a {
  color: var(--primary-dark);
  text-decoration: none;
  transition: color 0.2s ease;
}
.content-card a:hover { color: var(--primary); text-decoration: underline; }
.content-card ul, .content-card ol {
  padding-left: 22px;
  margin-bottom: 18px;
}
.content-card li {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 8px;
}
.content-card img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: 24px auto;
  display: block;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.service-hero img {
  width: 100%;
  margin-top: 0;
  border: none;
  box-shadow: none;
  border-radius: var(--radius);
}
.content-card table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
}
.content-card table th {
  background: var(--primary-bg);
  padding: 12px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--primary-dark);
  border: 1px solid var(--border);
}
.content-card table td {
  padding: 12px 14px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.content-card table tr:nth-child(even) td {
  background: #FAFBFC;
}
.content-card strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* News list */
.news-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s ease;
}
.news-item:last-child { border-bottom: none; }
.news-item:hover { background: var(--bg-light); margin: 0 -12px; padding-left: 12px; padding-right: 12px; border-radius: var(--radius); }
.news-item a {
  flex: 1;
  font-weight: 500;
  color: var(--text-primary);
  font-size: 15px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.news-item a:hover { color: var(--primary); text-decoration: none; }
.news-date {
  color: var(--text-tertiary);
  font-size: 13px;
  margin-left: 16px;
  white-space: nowrap;
}

/* Product feature blocks (divs with bullet points) — 不作用于 about-content 产品/关于页面 */
.content-card:not(.about-content) > div {
  margin: 16px 0;
}
.content-card:not(.about-content) > div > div {
  position: relative;
  padding: 9px 0 9px 20px;
  font-size: 15px;
  color: var(--text-secondary);
}
.content-card:not(.about-content) > div > div::before {
  content: '';
  position: absolute;
  left: 0; top: 17px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary-light);
}
.content-card:not(.about-content) > div > div > strong {
  color: var(--primary-dark);
}

/* 覆盖 .content-card > div > div 的默认 padding，避免产品页容器被错误缩进 */
.about-content .prod-overview { padding: 0 0 4px; }
.about-content .prod-modules { padding: 0; margin: 0; }
.about-content .prod-module { padding: 20px 16px; }
.about-content .prod-list { padding: 0; margin: 0; }
.about-content .prod-feature-group { padding: 0; }

/* Contact info in content */
.content-contact {
  background: var(--primary-bg);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin-top: 32px;
  border-left: 4px solid var(--primary);
}
.content-contact p {
  margin-bottom: 6px;
  font-size: 15px;
  color: var(--text-secondary);
}
.content-contact strong {
  color: var(--primary-dark);
}

/* ===== Contact 页面精细化内容（参考恒铭达式简洁布局） ===== */
.contact-lead {
  margin-bottom: 24px;
}
.contact-lead h2 {
  border-left: none;
  padding-left: 0;
  margin-bottom: 8px;
}
.contact-lead p {
  font-size: 15px;
  color: var(--text-tertiary);
}

.contact-info-section {
  margin-bottom: 36px;
}
.contact-info-section .cp-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 24px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(124, 167, 200, 0.15);
  display: flex;
  align-items: center;
  gap: 8px;
}
.contact-info-section .cp-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 16px;
  border-radius: 2px;
  background: var(--primary);
  flex-shrink: 0;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.contact-info-item .ci-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-bg);
  border: 1px solid rgba(124, 167, 200, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--primary);
  transition: all 0.25s ease;
}
.contact-info-item:hover .ci-icon {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.contact-info-item .ci-icon svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.contact-info-item .ci-body {
  flex: 1;
  padding-top: 2px;
  min-width: 0;
}
.contact-info-item .ci-label {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 4px;
}
.contact-info-item .ci-value {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.6;
}
.contact-info-item .ci-value a {
  color: var(--primary-dark);
  text-decoration: none;
}
.contact-info-item .ci-value a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.contact-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  min-height: 420px;
}
.contact-map #contactMap {
  width: 100%;
  height: 420px;
  border-radius: 0;
  display: block;
}
.contact-map img {
  width: 100%;
  height: auto;
  display: block;
  margin: 0;
  border-radius: 0;
  border: none;
  box-shadow: none;
}

@media (max-width: 768px) {
  .contact-info-item .ci-value { font-size: 14px; }
}
.contact-map-title svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: var(--primary);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* 响应式 */
@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .contact-hotline {
    padding: 24px;
  }
  .contact-hotline .number {
    font-size: 28px;
  }
  .contact-item {
    padding: 18px;
  }
}

.about-content {
  /* 顶部彩色边框已移除，与统一卡片风格保持一致 */
}
.about-section {
  margin-bottom: 44px;
  padding-bottom: 0;
  border-bottom: none;
}
.about-section:last-of-type {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}
.about-content h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-dark);
  margin: 0 0 20px;
  padding: 0 0 12px;
  border: none;
  position: relative;
  letter-spacing: 0.02em;
  display: block;
}
.about-content h2::before {
  display: none;
}
.about-content h2::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 48px; height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary));
}
.about-content p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 14px;
  text-align: justify;
}
.about-content p:last-of-type {
  margin-bottom: 0;
}
.about-content strong {
  color: var(--primary-dark);
  font-weight: 600;
}
.about-content h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 18px 0 8px;
  line-height: 1.6;
}
.about-content ul {
  margin: 0 0 16px;
  padding-left: 18px;
  list-style: disc;
}
.about-content ul li {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-secondary);
  padding: 3px 0;
}
.about-content ul li:last-child {
  margin-bottom: 0;
}

/* 数据指标 */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 0 0 44px;
  padding: 28px 0;
  border-top: 1px solid rgba(124, 167, 200, 0.18);
  border-bottom: 1px solid rgba(124, 167, 200, 0.18);
}
.about-stat {
  text-align: center;
  padding: 0 10px;
  background: transparent;
  border-radius: 0;
  border: none;
  transition: none;
}
.about-stat:hover {
  transform: none;
  box-shadow: none;
  border-color: transparent;
}
.about-stat-num {
  font-size: 30px;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1;
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}
.about-stat-num span {
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
}
.about-stat-label {
  font-size: 12px;
  color: var(--text-tertiary);
  letter-spacing: 0.3px;
}

/* 使命愿景 */
.about-mission {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 0;
}
.mission-item {
  background: var(--primary-bg);
  border-radius: var(--radius);
  padding: 18px 0 18px 0;
  border: 1px solid rgba(124, 167, 200, 0.15);
}
.mission-item h4,
.mission-item p {
  padding-left: 12px;
  padding-right: 12px;
}
.mission-item h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.mission-item h4 .icon {
  display: none;
}
.mission-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin: 0;
}

/* 核心优势 — 编号卡片 */
.about-advantages {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 0;
}
.advantage-item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 22px;
  background: var(--primary-bg);
  border-radius: var(--radius);
  transition: all 0.25s ease;
}
.advantage-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(115, 149, 188, 0.15);
}
.adv-num {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: white;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  box-shadow: 0 4px 12px rgba(115, 149, 188, 0.25);
}
.adv-body {
  flex: 1;
  min-width: 0;
  padding: 0;
}
.adv-body h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 6px;
}
.adv-body p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0;
}

/* 企业文化 — 四宫格宗旨卡片 */
.culture-principles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 0;
}
.culture-principles .mission-item {
  padding: 18px 12px;
}

@media (max-width: 768px) {
  .culture-principles { grid-template-columns: 1fr; gap: 14px; }
}
.footer {
  background: #1a2235;
  color: rgba(255, 255, 255, 0.75);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1.7fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-logo-text {
  font-size: 22px;
  font-weight: 700;
  color: white;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.footer-intro {
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 20px;
}
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.75);
}
.footer-icon { color: var(--primary-light); font-size: 14px; width: 18px; text-align: center; }
.footer-col h4 {
  color: white;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.2s ease;
}
.footer-links a:hover { color: var(--primary-light); }
.footer-links-horizontal {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 20px;
}
.footer-links-horizontal a {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}
.footer-qr {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}
.footer-qr img {
  width: 110px; height: 110px;
  border-radius: 6px;
  background: white;
  padding: 4px;
}
.footer-qr p {
  font-size: 12px;
  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;
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .content-wrapper { flex-direction: column; }
  .page-sidebar { width: 100%; position: static; }
  .content-card { padding: 32px 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-grid > .footer-col:nth-child(2) { grid-column: 1 / -1; }
  .nav { gap: 20px; }
  .page-title { font-size: 30px; }
  .content-wrapper .page-main:only-child { max-width: 100%; }
  .about-stats { grid-template-columns: repeat(2, 1fr); }
  .about-mission { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .header-inner { height: 64px; }
  .hamburger { display: flex; }
  .logo img { height: 38px; }
  .nav {
    position: fixed; top: 64px; left: 0; right: 0;
    background: var(--bg-white);
    flex-direction: column; gap: 0;
    padding: 0; max-height: 0; overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    z-index: 1050;
  }
  .nav.open { max-height: 420px; padding: 8px 0; }
  .nav a {
    display: block; padding: 14px 24px;
    font-size: 16px; border-bottom: 1px solid var(--border);
  }
  .nav a:last-child { border-bottom: none; }
  .nav a.active::after { display: none; }
  .nav a.active { background: var(--primary-bg); }
  .header-contact { font-size: 14px; padding: 6px 12px; gap: 6px; }
  .header-contact .icon-bg { width: 26px; height: 26px; }
  .header-contact .icon-bg svg { width: 14px; height: 14px; }
  .page-header { padding: 44px 0 48px; }
  .page-title { font-size: 26px; }
  .page-subtitle { font-size: 14px; }
  .content-card { padding: 24px 20px; }
  .content-card h2 { font-size: 22px; margin-bottom: 22px; }
  .content-card h3 { font-size: 17px; }
  .about-content h2 { font-size: 20px; margin-bottom: 14px; padding-bottom: 10px; }
  .about-content p { font-size: 14px; }
  .about-section { margin-bottom: 32px; padding-bottom: 30px; }
  .about-stats { margin: 0 0 32px; padding: 22px 0; }
  .about-stat-num { font-size: 24px; }
  .advantage-item { padding: 14px 0 14px 14px; }
  .adv-body h4 { font-size: 14px; }
  .adv-body p { font-size: 13px; }
  .mission-item { padding: 16px 18px; }
  .mission-item h4 { font-size: 14px; }
  .mission-item p { font-size: 13px; }
  .news-item { flex-direction: column; align-items: flex-start; gap: 4px; }
  .news-item a { white-space: normal; }
  .news-date { margin-left: 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-col { text-align: center; }
  .footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
  .footer-links-horizontal { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 20px; }
  .footer-links-horizontal a { white-space: nowrap; }
  .footer-contact-item { justify-content: center; }
  .footer-qr { align-items: center; }
}

/* 产品详情页列表 */
.product-list,
.about-content .product-list {
  list-style: none;
  padding: 0;
  margin: 0 0 14px;
}
.product-list li,
.about-content .product-list li {
  position: relative;
  list-style: none;
  padding: 4px 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(124, 167, 200, 0.08);
}
.product-list li:last-child,
.about-content .product-list li:last-child {
  border-bottom: none;
}
.product-list li::before,
.about-content .product-list li::before {
  display: none;
}

/* 产品架构图 */
.product-figure {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  margin: 20px 0 14px;
}
.product-figure img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto 10px;
  border: none;
  box-shadow: none;
  border-radius: 0;
}
.product-figure figcaption {
  font-size: 14px;
  color: var(--text-tertiary);
}

/* ===== 产品详情页 — 编号+卡片式结构 ===== */
/* 章节编号头 */
.prod-sec-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(124, 167, 200, 0.12);
  position: relative;
}
.prod-sec-head::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 60px;
  height: 2px;
  border-radius: 1px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary));
}
.prod-sec-num {
  display: none;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bg-white);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--primary-light);
  box-shadow: 0 2px 8px rgba(115, 149, 188, 0.1);
}
.prod-sec-head h2 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  border: none;
  letter-spacing: 0.02em;
}
.prod-sec-head h2::before,
.prod-sec-head h2::after {
  display: none;
}
.prod-sec-head .sec-en {
  display: none;
}

/* 概述引导块 */
.prod-overview {
  padding: 0 0 4px;
  margin-bottom: 36px;
}
.prod-overview p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin: 0;
  text-align: justify;
}
.prod-overview p + p {
  margin-top: 14px;
}

/* 功能模块卡片网格 */
.prod-modules {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
}
.prod-module {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  transition: all 0.25s ease;
}
.prod-module:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(115, 149, 188, 0.1);
  border-color: rgba(124, 167, 200, 0.35);
}
.prod-module .pm-icon {
  width: 42px;
  height: 42px;
  margin: 0 auto 12px;
  border-radius: 12px;
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}
.prod-module .pm-icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: var(--primary);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.prod-module .pm-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

/* 目标/优势 — 列表形式 */
.prod-list,
.about-content .prod-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.prod-list li,
.about-content .prod-list li {
  list-style: none;
  padding: 4px 0;
  position: relative;
  border-bottom: 1px solid rgba(124, 167, 200, 0.08);
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
}
.prod-list li:last-child,
.about-content .prod-list li:last-child {
  border-bottom: none;
}
.prod-list li::before,
.about-content .prod-list li::before {
  display: none;
}
.prod-list .pn-num {
  display: inline-block;
  margin-right: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  background: var(--primary-bg);
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1.4;
  vertical-align: top;
}
.prod-list .pn-text {
  display: inline;
  color: var(--text-secondary);
}

/* 废弃的卡片网格（保留兼容，实际不再使用） */
.prod-card-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.prod-card {
  padding: 0 0 14px 48px;
  position: relative;
  border-bottom: 1px solid rgba(124, 167, 200, 0.1);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}
.prod-card:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.prod-card .pc-num {
  position: absolute;
  left: 0;
  top: 0;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  background: var(--primary-bg);
  padding: 3px 8px;
  border-radius: 4px;
  line-height: 1.4;
}
.prod-card .pc-text {
  color: var(--text-secondary);
}

/* 功能特点分组 — 与系统建设目标统一为简洁列表 */
.prod-feature-group {
  margin-bottom: 8px;
  padding: 0;
  background: none;
  border: none;
  border-radius: 0;
}
.prod-feature-group:last-child {
  margin-bottom: 0;
}
.prod-feature-group > h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary-dark);
  margin: 0 0 3px;
  padding: 0 0 3px;
  border-bottom: 1px solid rgba(124, 167, 200, 0.12);
  display: flex;
  align-items: center;
  gap: 8px;
}
.prod-feature-group > h3::before {
  display: none;
}
.prod-feature-group > h3 .fg-count {
  display: none;
}
.prod-feature-group .product-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.prod-feature-group .product-list li {
  position: relative;
  list-style: none;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  padding: 3px 0;
  border-bottom: 1px solid rgba(124, 167, 200, 0.08);
}
.prod-feature-group .product-list li:last-child {
  border-bottom: none;
}
.prod-feature-group .product-list li::before {
  display: none;
}

/* 产品配置表格 */
.prod-config-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-top: 10px;
}
.prod-config-table thead th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  padding: 10px 12px;
  text-align: center;
  font-size: 13px;
  white-space: nowrap;
}
.prod-config-table thead th:first-child { text-align: center; width: 90px; }
.prod-config-table thead th:nth-child(2) { width: 170px; text-align: left; }
.prod-config-table thead th:nth-child(3) { text-align: left; }
.prod-config-table thead th:last-child { width: 70px; text-align: center; }
.prod-config-table tbody td {
  padding: 9px 12px;
  border-bottom: 1px solid rgba(124, 167, 200, 0.12);
  color: var(--text-secondary);
  line-height: 1.6;
  vertical-align: middle;
}
.prod-config-table tbody td:nth-child(2),
.prod-config-table tbody td:nth-child(3) {
  text-align: left !important;
  font-size: 14px;
  color: var(--text-secondary);
}
.prod-config-table tbody td:nth-child(2) {
  white-space: nowrap;
}
.prod-config-table tbody td:first-child,
.prod-config-table tbody td:last-child {
  text-align: center !important;
  font-size: 13px;
  color: var(--text-secondary);
}
.prod-config-table tbody td.td-left {
  text-align: left !important;
}
.prod-config-table tbody td.td-center {
  text-align: center !important;
}
.prod-config-table thead th.td-center {
  text-align: center !important;
}
.prod-config-table thead th.td-left {
  text-align: left !important;
}
.prod-config-table .cat-cell {
  background: var(--primary-bg);
  font-weight: 700;
  color: var(--primary-dark) !important;
  font-size: 14px !important;
  text-align: center !important;
}
.prod-config-table .opt-tag {
  display: inline-block;
  background: #fef0f0;
  color: #e74c3c;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 3px;
  margin-left: 4px;
  vertical-align: middle;
}
/* 软件截图 */
.prod-screenshots {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 10px;
}
.prod-screenshot-item {
  text-align: left;
}
.prod-screenshot-item img {
  width: 100%;
  max-width: 640px;
  border: none;
  border-radius: 0;
  box-shadow: none;
}
.prod-screenshot-item .screenshot-caption {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 500;
  text-align: center;
}
/* 服务标语 banner */
.prod-service-banner {
  margin-top: 30px;
  text-align: left;
}
.prod-service-banner img {
  max-width: 640px;
  width: 100%;
  border-radius: 0;
  border: none;
  box-shadow: none;
  display: block;
}
.prod-service-banner .service-text {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.8;
  font-weight: 600;
  color: var(--text-secondary);
}
.prod-service-banner .service-contact {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.prod-service-banner .service-contact img {
  display: inline-block;
  vertical-align: middle;
  margin: 0 4px;
  width: auto;
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .page-title { font-size: 22px; }
  .page-content { padding: 0 16px 50px; }
  .content-card { padding: 22px 16px; }
  .content-card h2 { font-size: 20px; }
  .about-content h2 { font-size: 18px; }
  .about-stats { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .about-stat-num { font-size: 20px; }
  .about-stat-label { font-size: 11px; }
  .advantage-item { padding: 12px; }
  .adv-body h4 { font-size: 13px; }
  .prod-sec-num { width: 32px; height: 32px; font-size: 14px; }
  .prod-sec-head h2 { font-size: 17px; }
  .prod-sec-head .sec-en { display: none; }
  .prod-modules { grid-template-columns: repeat(2, 1fr); }
  .prod-card-grid { grid-template-columns: 1fr; }
  .prod-overview { padding: 18px 16px; }
  .prod-feature-group { padding: 14px 16px; }
  .sidebar-category { margin: 18px 16px 6px; font-size: 11px; gap: 8px; }
  .prod-screenshots { grid-template-columns: 1fr; gap: 14px; }
  .prod-config-table thead { display: none; }
  .prod-config-table tbody td {
    display: block;
    text-align: left !important;
    padding: 7px 12px;
    font-size: 13px;
    border-bottom: 1px dashed rgba(124,167,200,0.1);
  }
  .prod-config-table tbody td.td-center {
    text-align: left !important;
  }
  /* 分类头（cat-cell）：无 label 前缀，整体蓝色卡片 */
  .prod-config-table tbody td.cat-cell {
    font-weight: 700;
    font-size: 14px;
    color: var(--primary-dark) !important;
    background: var(--primary-bg);
    margin-top: 10px;
    border-radius: 4px 4px 0 0;
    padding: 8px 12px;
    border-bottom: none;
    text-align: center !important;
  }
  /* 普通单元格：显示 data-label 前缀 */
  .prod-config-table tbody td:not(.cat-cell)::before {
    content: attr(data-label) "：";
    display: block;
    font-size: 10px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 2px;
    letter-spacing: 0.5px;
  }
  /* 行末加分隔线 */
  .prod-config-table tbody td:last-child {
    border-bottom: 2px solid rgba(124,167,200,0.15);
    margin-bottom: 4px;
  }
}