/* ==========================================================================
   启航科技 - 企业官网全局样式
   说明：本文件为通用企业网站模板样式，颜色/字体可通过 :root 变量统一调整
   ========================================================================== */

/* ---------- 主题变量 ---------- */
:root {
  /* 品牌色 */
  --color-primary: #1a6fb5;      /* 主色（蓝） */
  --color-primary-dark: #12538a; /* 主色深 */
  --color-primary-light: #2b8fd6;
  --color-accent: #f5a623;       /* 强调色（橙，用于 CTA） */
  --color-navy: #0f2a43;         /* 深蓝（页脚/标题） */

  /* 中性色 */
  --color-text: #2b3a4a;
  --color-text-light: #66727e;
  --color-border: #e6ebf0;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f8fb;

  /* 字体 */
  --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
                 "Source Han Sans SC", -apple-system, BlinkMacSystemFont,
                 "Segoe UI", Roboto, Arial, sans-serif;

  /* 布局 */
  --container-max: 1200px;
  --radius: 10px;
  --shadow-sm: 0 2px 8px rgba(15, 42, 67, 0.06);
  --shadow-md: 0 6px 24px rgba(15, 42, 67, 0.10);
  --transition: 0.25s ease;
}

/* ---------- 基础重置 ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-navy);
  line-height: 1.3;
  font-weight: 700;
}

/* ---------- 通用布局容器 ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 72px 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

/* 区块标题 */
.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head .eyebrow {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: 34px;
  margin-bottom: 14px;
}

.section-head p {
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto;
  font-size: 16px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-align: center;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

.btn--accent {
  background: var(--color-accent);
  color: #fff;
}

.btn--accent:hover {
  background: #e0950f;
  color: #fff;
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn--light {
  background: #fff;
  color: var(--color-navy);
}

.btn--light:hover {
  background: var(--color-bg-alt);
  color: var(--color-navy);
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-navy);
  font-weight: 700;
  font-size: 22px;
}

.brand__logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  flex-shrink: 0;
}

.brand small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--color-text-light);
  letter-spacing: 1px;
}

.main-nav ul {
  display: flex;
  gap: 34px;
}

.main-nav a {
  display: block;
  color: var(--color-text);
  font-size: 16px;
  font-weight: 500;
  padding: 24px 0;
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 16px;
  width: 0;
  height: 3px;
  border-radius: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.main-nav a:hover,
.main-nav a.is-active {
  color: var(--color-primary);
}

.main-nav a:hover::after,
.main-nav a.is-active::after {
  width: 100%;
}

/* 移动端导航按钮 */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 42px;
  height: 42px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-navy);
  transition: all var(--transition);
}

.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  color: #fff;
  background: linear-gradient(135deg, #0f2a43 0%, #1a4b7a 55%, #1a6fb5 100%);
  padding: 120px 0;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.08) 0, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(255,255,255,0.06) 0, transparent 45%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  max-width: 720px;
}

.hero h1 {
  color: #fff;
  font-size: 46px;
  margin-bottom: 22px;
  line-height: 1.25;
}

.hero p {
  font-size: 18px;
  color: rgba(255,255,255,0.88);
  margin-bottom: 36px;
  max-width: 600px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__stats {
  position: relative;
  display: flex;
  gap: 48px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.hero__stats .stat {
  text-align: left;
}

.hero__stats .stat strong {
  display: block;
  font-size: 34px;
  color: #fff;
  font-weight: 700;
}

.hero__stats .stat span {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
}

/* ---------- 卡片/网格 ---------- */
.grid {
  display: grid;
  gap: 28px;
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.card__icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
}

.card h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.card p {
  color: var(--color-text-light);
  font-size: 15px;
}

.card__link {
  display: inline-block;
  margin-top: 16px;
  font-weight: 600;
  font-size: 14px;
}

.card__link::after {
  content: " →";
  transition: margin var(--transition);
}

.card__link:hover::after {
  margin-left: 4px;
}

/* ---------- 简介区块 ---------- */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about-preview__media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: linear-gradient(135deg, #eef4fb, #dbe9f7);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 60px;
}

.about-preview h2 {
  font-size: 32px;
  margin-bottom: 20px;
}

.about-preview p {
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.about-preview ul {
  margin: 20px 0 28px;
}

.about-preview ul li {
  padding-left: 26px;
  position: relative;
  margin-bottom: 10px;
  color: var(--color-text);
}

.about-preview ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* ---------- 新闻列表 ---------- */
.news-list {
  display: grid;
  gap: 24px;
}

.news-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.news-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.news-item__thumb {
  background: linear-gradient(135deg, var(--color-bg-alt), #dbe9f7);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 44px;
  min-height: 160px;
}

.news-item__body {
  padding: 24px 24px 24px 0;
}

.news-item__meta {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.news-item__meta .tag {
  background: var(--color-bg-alt);
  color: var(--color-primary);
  border-radius: 4px;
  padding: 2px 10px;
  margin-right: 12px;
  font-size: 12px;
}

.news-item h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.news-item h3 a {
  color: var(--color-navy);
}

.news-item h3 a:hover {
  color: var(--color-primary);
}

.news-item p {
  color: var(--color-text-light);
  font-size: 15px;
}

/* ---------- 页面标题（内页 Banner） ---------- */
.page-banner {
  background: linear-gradient(135deg, #0f2a43, #1a6fb5);
  color: #fff;
  padding: 64px 0;
  text-align: center;
}

.page-banner h1 {
  color: #fff;
  font-size: 38px;
  margin-bottom: 12px;
}

.page-banner p {
  color: rgba(255,255,255,0.82);
  max-width: 620px;
  margin: 0 auto;
}

/* 面包屑 */
.breadcrumb {
  font-size: 14px;
  color: var(--color-text-light);
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 0;
}

.breadcrumb a {
  color: var(--color-text-light);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb span {
  margin: 0 8px;
  color: #c3ccd4;
}

.breadcrumb .current {
  color: var(--color-navy);
  font-weight: 600;
}

/* ---------- 产品页 ---------- */
.product-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.product-filter button {
  padding: 8px 22px;
  border-radius: 50px;
  border: 1px solid var(--color-border);
  background: #fff;
  cursor: pointer;
  font-size: 14px;
  color: var(--color-text);
  transition: all var(--transition);
  font-family: inherit;
}

.product-filter button.is-active,
.product-filter button:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.product-card {
  display: flex;
  flex-direction: column;
}

.product-card__media {
  height: 190px;
  background: linear-gradient(135deg, var(--color-bg-alt), #dbe9f7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 54px;
  color: var(--color-primary);
  border-radius: var(--radius) var(--radius) 0 0;
}

.product-card .card__body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.product-card p {
  font-size: 14px;
  flex: 1;
}

.product-card .tags {
  margin: 14px 0;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.product-card .tags span {
  font-size: 12px;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  padding: 3px 10px;
  border-radius: 4px;
}

/* ---------- 关于页 ---------- */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--color-border);
}

.timeline__item {
  position: relative;
  padding-bottom: 32px;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 4px #e3f0fb;
}

.timeline__item .year {
  font-weight: 700;
  color: var(--color-primary);
  font-size: 18px;
}

.timeline__item h3 {
  font-size: 18px;
  margin: 6px 0;
}

.timeline__item p {
  color: var(--color-text-light);
  font-size: 15px;
}

/* 价值观/资质 */
.value-grid .card {
  text-align: center;
}

.value-grid .card__icon {
  margin: 0 auto 20px;
}

.honor-list {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.honor-list li {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 26px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: var(--color-navy);
  box-shadow: var(--shadow-sm);
}

.honor-list li::before {
  content: "🏆";
  font-size: 22px;
}

/* ---------- CTA 区块 ---------- */
.cta {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  text-align: center;
  padding: 64px 0;
}

.cta h2 {
  color: #fff;
  font-size: 32px;
  margin-bottom: 14px;
}

.cta p {
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin: 0 auto 30px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--color-navy);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 0;
  font-size: 14px;
}

.site-footer a {
  color: rgba(255,255,255,0.75);
}

.site-footer a:hover {
  color: #fff;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 48px;
}

.site-footer h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 20px;
}

.site-footer ul li {
  margin-bottom: 10px;
}

.site-footer__about p {
  margin-top: 16px;
  max-width: 300px;
  line-height: 1.8;
}

.site-footer__contact li {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 20px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 90;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-primary-dark);
}

/* ---------- 文章详情 ---------- */
.article {
  max-width: 820px;
  margin: 0 auto;
}

.article__header {
  text-align: center;
  margin-bottom: 40px;
}

.article__header h1 {
  font-size: 32px;
  margin-bottom: 16px;
}

.article__meta {
  color: var(--color-text-light);
  font-size: 14px;
}

.article__meta span {
  margin: 0 10px;
}

.article__body h2 {
  font-size: 24px;
  margin: 36px 0 16px;
}

.article__body h3 {
  font-size: 19px;
  margin: 26px 0 12px;
}

.article__body p {
  margin-bottom: 18px;
  color: var(--color-text);
}

.article__body ul {
  margin: 0 0 18px 22px;
  list-style: disc;
  color: var(--color-text);
}

.article__body ul li {
  margin-bottom: 8px;
}

.article__footer {
  margin-top: 48px;
  padding: 20px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  text-align: center;
}

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .about-preview { grid-template-columns: 1fr; gap: 32px; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 36px; }
}

@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .section-head h2 { font-size: 26px; }

  .nav-toggle { display: flex; }

  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }

  .main-nav.is-open { max-height: 400px; }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 12px 20px;
  }

  .main-nav a {
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .main-nav a::after { display: none; }

  .hero { padding: 72px 0; }
  .hero h1 { font-size: 30px; }
  .hero__stats { gap: 28px; }

  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }

  .news-item { grid-template-columns: 1fr; }
  .news-item__body { padding: 20px; }
  .news-item__thumb { min-height: 140px; }

  .site-footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .site-footer__bottom { justify-content: center; text-align: center; }

  .article__header h1 { font-size: 26px; }
}

/* ==========================================================================
   二期增强样式（顶栏 / 产品介绍 / 双列新闻 / 分页 / 友链 / FAQ / 侧边栏）
   ========================================================================== */

/* ---------- 顶部工具条（每页：品牌 + 电话 + 咨询） ---------- */
.topbar {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
}

.topbar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 42px;
  gap: 16px;
}

.topbar__slogan {
  letter-spacing: 0.5px;
}

.topbar__right {
  display: flex;
  gap: 22px;
  align-items: center;
}

.topbar__right a {
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.topbar__right a:hover {
  color: #ffd166;
}

.topbar__right .hotline {
  color: #ffd166;
  font-weight: 700;
}

/* 导航右侧 CTA 按钮 */
.header-cta {
  margin-left: 18px;
  white-space: nowrap;
}

/* ---------- 首页「产品介绍」特色区 ---------- */
.product-intro-feature {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
  background: linear-gradient(135deg, #0f2a43 0%, #1a4b7a 60%, #1a6fb5 100%);
  color: #fff;
  border-radius: 18px;
  padding: 52px;
  margin-bottom: 40px;
  overflow: hidden;
}

.product-intro-feature h3 {
  color: #fff;
  font-size: 30px;
  margin-bottom: 16px;
}

.product-intro-feature p {
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 26px;
}

.product-intro-feature .badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  color: #ffd166;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.product-intro-feature__media {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 110px;
  filter: drop-shadow(0 12px 30px rgba(0, 0, 0, 0.25));
}

/* 产品特性标签（首页卡片） */
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 18px;
}

.feature-tags span {
  font-size: 12px;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  padding: 4px 12px;
  border-radius: 4px;
}

/* ---------- 双列新闻网格 ---------- */
.news-grid--2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.news-card {
  display: flex;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.news-card__icon {
  width: 64px;
  height: 64px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-bg-alt), #dbe9f7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  flex-shrink: 0;
  color: var(--color-primary);
}

.news-card__body {
  flex: 1;
  min-width: 0;
}

.news-card__meta {
  font-size: 12px;
  color: var(--color-text-light);
  margin-bottom: 6px;
}

.news-card__meta .tag {
  background: var(--color-bg-alt);
  color: var(--color-primary);
  border-radius: 4px;
  padding: 2px 10px;
  margin-right: 10px;
}

.news-card h3 {
  font-size: 16px;
  line-height: 1.5;
  margin-bottom: 8px;
}

.news-card h3 a {
  color: var(--color-navy);
}

.news-card h3 a:hover {
  color: var(--color-primary);
}

.news-card p {
  font-size: 14px;
  color: var(--color-text-light);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- 分页 ---------- */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 44px;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  background: #fff;
  font-size: 14px;
  transition: all var(--transition);
}

.pagination a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination .is-current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  font-weight: 700;
}

.pagination .is-disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* ---------- 友情链接（50 位置，列表式） ---------- */
.friend-links {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 30px 0;
}

.friend-links h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 16px;
}

.friend-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
}

.friend-links li a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

.friend-links li a:hover {
  color: #ffd166;
}

/* ---------- FAQ 手风琴 ---------- */
.faq {
  max-width: 820px;
  margin: 0 auto;
}

.faq__item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  background: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq__question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-navy);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
}

.faq__question::after {
  content: "+";
  font-size: 26px;
  line-height: 1;
  color: var(--color-primary);
  font-weight: 400;
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq__item.is-open .faq__question::after {
  content: "−";
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq__answer p {
  padding: 0 24px 20px;
  color: var(--color-text-light);
  font-size: 15px;
}

.faq__item.is-open .faq__answer {
  max-height: 400px;
}

/* ---------- 产品页侧边栏布局 ---------- */
.sidebar-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 44px;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 96px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.sidebar__title {
  font-size: 16px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
}

.sidebar nav a {
  display: block;
  padding: 12px 14px;
  border-left: 3px solid transparent;
  color: var(--color-text);
  font-size: 14px;
  border-radius: 0 6px 6px 0;
  transition: all var(--transition);
}

.sidebar nav a:hover,
.sidebar nav a.is-active {
  border-left-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-bg-alt);
}

/* 产品列表式条目 */
.product-item {
  display: flex;
  gap: 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  scroll-margin-top: 120px;
  transition: box-shadow var(--transition);
}

.product-item:hover {
  box-shadow: var(--shadow-md);
}

.product-item__icon {
  width: 76px;
  height: 76px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 38px;
  flex-shrink: 0;
}

.product-item__body {
  flex: 1;
}

.product-item__body h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.product-item__body > p {
  color: var(--color-text-light);
  font-size: 15px;
  margin-bottom: 14px;
}

.product-item .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.product-item .tags span {
  font-size: 12px;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  padding: 4px 12px;
  border-radius: 4px;
}

/* ---------- 页脚资源栏（sitemap / llms 入口） ---------- */
.footer-resources {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 20px 0;
  display: flex;
  align-items: center;
  gap: 12px 26px;
  flex-wrap: wrap;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}

.footer-resources__label {
  color: #fff;
  font-weight: 600;
}

.footer-resources a {
  color: #ffd166;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-resources a:hover {
  color: #fff;
  text-decoration: underline;
}

/* ---------- 产品矩阵 ---------- */
.product-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.matrix-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 44px 30px;
  text-align: center;
  scroll-margin-top: 120px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.matrix-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.matrix-card__icon {
  width: 76px;
  height: 76px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #eef4fb, #dbe9f7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
}

.matrix-card h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.matrix-card p {
  color: var(--color-text-light);
  font-size: 14px;
  margin-bottom: 16px;
}

.matrix-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 20px;
}

.matrix-card .tags span {
  font-size: 12px;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  padding: 4px 12px;
  border-radius: 50px;
}

.matrix-card .card__link {
  font-size: 14px;
}

/* ---------- 品牌/电话 显眼展示 ---------- */
.topbar .hotline {
  font-size: 17px;
  letter-spacing: 0.5px;
}

.banner-contact {
  margin-top: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.banner-contact .brand-name {
  color: #fff;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 1px;
}

.banner-phone {
  color: #ffd166;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  line-height: 1;
}

.banner-phone:hover {
  color: #fff;
}

.cta-phone {
  color: #ffd166;
  font-size: 30px;
  font-weight: 800;
  margin: 16px 0 26px;
}

.cta-phone a {
  color: #ffd166;
}

.cta-phone a:hover {
  color: #fff;
}

.article-phone {
  margin-top: 16px;
  font-size: 20px;
  font-weight: 700;
}

.article-phone a {
  color: var(--color-primary);
}

/* ---------- 产品缩略图卡片（传统制造业布局） ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.catalog-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  scroll-margin-top: 120px;
}

.catalog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.catalog-card__thumb {
  height: 200px;
  background: linear-gradient(135deg, #eef4fb 0%, #dbe9f7 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  color: var(--color-primary);
  position: relative;
}

.catalog-card__thumb::after {
  content: "产品图";
  position: absolute;
  right: 12px;
  bottom: 10px;
  font-size: 11px;
  color: #6b7d8f;
  background: rgba(255, 255, 255, 0.75);
  padding: 2px 8px;
  border-radius: 4px;
}

.catalog-card__body {
  padding: 24px;
  text-align: center;
}

.catalog-card__body h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.catalog-card__body p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.catalog-card__body .btn {
  padding: 9px 24px;
  font-size: 14px;
}

/* ---------- 二期响应式 ---------- */
@media (max-width: 992px) {
  .header-cta { display: none; }
  .product-intro-feature { grid-template-columns: 1fr; padding: 36px; }
  .product-intro-feature__media { font-size: 80px; }
  .sidebar-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .product-matrix { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .topbar__slogan { display: none; }
  .topbar__inner { justify-content: center; height: 38px; }
  .news-grid--2 { grid-template-columns: 1fr; }
  .product-item { flex-direction: column; }
  .product-intro-feature { padding: 28px; }
  .product-matrix { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .banner-phone { font-size: 26px; }
  .cta-phone { font-size: 24px; }
}