* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #f57c00;
  --primary-dark: #e65100;
  --dark: #2d2d2d;
  --light-gray: #f5f5f5;
  --gray: #757575;
  --border: #e0e0e0;
}
body {
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #333;
  line-height: 1.6;
  background: #fff;
}
a { color: inherit; text-decoration: none; transition: all .3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 4px;
  font-weight: 500;
  font-size: 15px;
  cursor: pointer;
  border: none;
  transition: all .3s;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(245,124,0,.3);
}
.btn-white {
  background: #fff;
  color: var(--primary);
}
.btn-white:hover {
  background: #fff3e0;
  transform: translateY(-2px);
}
.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-block { display: block; width: 100%; }
.mt10 { margin-top: 10px; }

/* 顶部栏 */
.top-bar {
  background: var(--dark);
  color: #bdbdbd;
  font-size: 13px;
  line-height: 40px;
}
.top-wrap { display: flex; justify-content: space-between; align-items: center; }
.top-right a { margin-left: 20px; }
.top-right a:hover { color: var(--primary); }

/* 导航 */
.site-header {
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,.06);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 75px;
}
.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--dark);
}
.logo-mark {
  color: var(--primary);
  margin-right: 6px;
}
.main-nav a {
  margin-left: 30px;
  font-size: 15px;
  font-weight: 500;
  color: #444;
  position: relative;
}
.main-nav a:hover, .main-nav a.active { color: var(--primary); }
.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -26px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary);
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: #333;
  transition: .3s;
}

/* Hero */
.hero {
  position: relative;
  height: 550px;
  overflow: hidden;
}
.hero-slider { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-mask {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, rgba(45,45,45,.92) 0%, rgba(45,45,45,.6) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
}
.hero-text { max-width: 700px; }
.hero-text h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
}
.highlight { color: var(--primary); }
.hero-desc {
  font-size: 17px;
  line-height: 1.8;
  margin-bottom: 35px;
  color: rgba(255,255,255,.85);
}
.hero-actions .btn { margin-right: 15px; }
.hero-quick {
  display: flex;
  gap: 50px;
  margin-top: 50px;
}
.hq-item { text-align: center; }
.hq-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}
.hq-label {
  font-size: 14px;
  color: rgba(255,255,255,.7);
  margin-top: 5px;
}

/* 通用标题 */
.section-head {
  text-align: center;
  margin-bottom: 50px;
}
.section-head.light h2, .section-head.light p { color: #fff; }
.section-head h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}
.section-head p {
  font-size: 16px;
  color: var(--gray);
}
.sec-tag {
  display: inline-block;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 10px;
}
.sec-tag.light { color: var(--primary); }

/* 优势 */
.advantages {
  padding: 80px 0;
  background: var(--light-gray);
}
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}
.adv-card {
  background: #fff;
  padding: 35px 25px;
  border-radius: 6px;
  text-align: center;
  border-bottom: 3px solid transparent;
  transition: all .3s;
}
.adv-card:hover {
  transform: translateY(-5px);
  border-bottom-color: var(--primary);
  box-shadow: 0 10px 25px rgba(0,0,0,.08);
}
.adv-icon-wrap {
  font-size: 44px;
  margin-bottom: 20px;
}
.adv-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
  color: var(--dark);
}
.adv-card p {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
}

/* 关于 */
.about { padding: 80px 0; }
.about-flex {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-image { position: relative; }
.about-image img {
  width: 100%;
  height: 430px;
  object-fit: cover;
  border-radius: 6px;
}
.exp-badge {
  position: absolute;
  left: -20px;
  bottom: -20px;
  background: var(--primary);
  color: #fff;
  padding: 20px 25px;
  border-radius: 6px;
  text-align: center;
  box-shadow: 0 8px 20px rgba(245,124,0,.25);
}
.exp-badge strong {
  font-size: 38px;
  font-weight: 700;
  display: block;
  line-height: 1;
}
.exp-badge span { font-size: 14px; margin-top: 5px; display: block; }
.about-info h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
}
.about-lead {
  font-size: 16px;
  line-height: 1.8;
  color: #444;
  margin-bottom: 15px;
  font-weight: 500;
}
.about-info > p {
  font-size: 15px;
  line-height: 1.8;
  color: #666;
  margin-bottom: 20px;
}
.about-features { margin-bottom: 30px; }
.about-features li {
  padding: 7px 0;
  font-size: 15px;
  color: #444;
}

/* 平台 */
.platforms { padding: 80px 0; background: #fff; }
.plat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}
.plat-card {
  padding: 35px 25px;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all .3s;
}
.plat-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 0 10px 25px rgba(0,0,0,.08);
}
.plat-emoji { font-size: 48px; margin-bottom: 15px; }
.plat-card h3 {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--dark);
}
.plat-card p {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 15px;
}
.plat-link {
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
}
.plat-link:hover { padding-left: 5px; }

/* 服务 */
.services { padding: 80px 0; background: var(--light-gray); }
.serv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.serv-card {
  background: #fff;
  border-radius: 6px;
  padding: 30px;
  position: relative;
  transition: all .3s;
  border: 1px solid transparent;
}
.serv-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0,0,0,.08);
  border-color: var(--primary);
}
.serv-badge {
  position: absolute;
  top: 0;
  right: 20px;
  padding: 6px 12px;
  background: #eee;
  color: #666;
  font-size: 12px;
  border-radius: 0 0 4px 4px;
}
.serv-badge.hot { background: #e53935; color: #fff; }
.serv-badge.rec { background: var(--primary); color: #fff; }
.serv-badge.ent { background: var(--dark); color: #fff; }
.serv-head { margin-bottom: 15px; padding-bottom: 15px; border-bottom: 1px solid var(--border); }
.serv-plat {
  display: inline-block;
  padding: 3px 10px;
  background: #fff3e0;
  color: var(--primary);
  font-size: 12px;
  border-radius: 3px;
  margin-bottom: 10px;
}
.serv-head h3 { font-size: 19px; color: var(--dark); }
.serv-desc {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 18px;
}
.serv-list { margin-bottom: 22px; }
.serv-list li {
  padding: 5px 0;
  font-size: 13px;
  color: #555;
}
.serv-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.serv-price {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
}

/* 流程 */
.process {
  padding: 80px 0;
  background: var(--dark);
}
.process-steps {
  display: flex;
  align-items: center;
  justify-content: center;
}
.step {
  flex: 1;
  text-align: center;
  padding: 30px 20px;
  color: #fff;
}
.step-num {
  width: 60px;
  height: 60px;
  line-height: 60px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  margin: 0 auto 20px;
}
.step h3 { font-size: 18px; margin-bottom: 10px; }
.step p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,.75);
}
.step-line {
  width: 40px;
  height: 2px;
  background: rgba(255,255,255,.2);
  position: relative;
}
.step-line::after {
  content: '→';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--primary);
  font-size: 18px;
}

/* 新闻 */
.news { padding: 80px 0; }
.news-more-wrap { text-align: center; margin-top: 40px; }

/* 资讯列表基础规则 必须保留 */
ul.article-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  box-sizing: border-box;
}
ul.article-cards > li.article-card {
  min-width: 0;
  width: auto;
  max-width: none;
  margin: 0;
  float: none;
  box-sizing: border-box;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  transition: all .3s;
}
ul.article-cards > li.article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,.08);
  border-color: var(--primary);
}
.article-card .card-thumb {
  width: 100%;
  overflow: hidden;
  height: 180px;
}
.article-card .card-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  transition: transform .5s;
}
.article-card:hover .card-thumb img { transform: scale(1.05); }
.article-card .card-body { padding: 20px; }
.article-card .card-date {
  display: inline-block;
  padding: 3px 10px;
  background: #fff3e0;
  color: var(--primary);
  font-size: 12px;
  border-radius: 3px;
  margin-bottom: 12px;
}
.article-card .card-title {
  overflow-wrap: anywhere;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 10px;
  color: var(--dark);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card .card-title a:hover { color: var(--primary); }
.article-card .card-summary {
  overflow-wrap: anywhere;
  font-size: 13px;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 15px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card .card-more {
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
}

/* FAQ */
.faq { padding: 80px 0; background: var(--light-gray); }
.faq-wrap { max-width: 900px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: 6px;
  margin-bottom: 15px;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all .3s;
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 5px 15px rgba(0,0,0,.05);
}
.faq-q {
  padding: 20px 25px;
  display: flex;
  align-items: center;
  gap: 15px;
  cursor: pointer;
}
.q-mark {
  width: 28px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}
.faq-q h3 {
  flex: 1;
  font-size: 16px;
  color: var(--dark);
  font-weight: 500;
}
.q-toggle {
  width: 24px;
  height: 24px;
  line-height: 24px;
  text-align: center;
  font-size: 22px;
  color: var(--gray);
  transition: .3s;
}
.faq-item.active .q-toggle {
  transform: rotate(45deg);
  color: var(--primary);
}
.faq-a {
  padding: 0 25px 20px 68px;
  display: none;
}
.faq-item.active .faq-a { display: block; }
.faq-a p {
  font-size: 14px;
  line-height: 1.8;
  color: #666;
}

/* 联系 */
.contact { padding: 80px 0; background: var(--dark); }
.contact-flex {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contact-info h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}
.contact-lead {
  font-size: 15px;
  color: rgba(255,255,255,.75);
  line-height: 1.8;
  margin-bottom: 35px;
}
.contact-list { display: flex; flex-direction: column; gap: 20px; }
.ci-item {
  display: flex;
  gap: 15px;
  align-items: center;
  color: #fff;
}
.ci-icon {
  width: 50px;
  height: 50px;
  line-height: 50px;
  text-align: center;
  background: rgba(245,124,0,.15);
  color: var(--primary);
  border-radius: 50%;
  font-size: 22px;
  flex-shrink: 0;
}
.ci-label {
  font-size: 13px;
  color: rgba(255,255,255,.6);
  margin-bottom: 3px;
}
.ci-value { font-size: 16px; font-weight: 500; }
.contact-form-wrap {
  background: #fff;
  padding: 35px;
  border-radius: 6px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: #333;
  margin-bottom: 7px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
  transition: .3s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(245,124,0,.1);
}
.form-note {
  margin-top: 12px;
  font-size: 12px;
  color: var(--gray);
  text-align: center;
}

/* Footer */
.site-footer { background: #1a1a1a; color: #999; padding-top: 60px; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
}
.f-logo {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}
.f-desc {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}
.f-contact p { font-size: 14px; margin-bottom: 8px; }
.f-contact a:hover { color: var(--primary); }
.footer-col h4 {
  font-size: 16px;
  color: #fff;
  margin-bottom: 20px;
  font-weight: 600;
}
.footer-col ul li { margin-bottom: 10px; font-size: 14px; }
.footer-col ul li a:hover { color: var(--primary); padding-left: 5px; }
.friend-links a {
  display: inline-block;
  margin: 0 10px 8px 0;
  font-size: 13px;
  color: #777;
}
.friend-links a:hover { color: var(--primary); }
.f-sitemap a {
  font-size: 14px;
  color: #777;
}
.f-sitemap a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid #2a2a2a;
  padding: 20px 0;
  font-size: 13px;
  text-align: center;
}
.footer-bottom a { color: #777; margin: 0 8px; }
.footer-bottom a:hover { color: var(--primary); }

/* 悬浮客服 */
.float-customer {
  position: fixed;
  right: 15px;
  bottom: 60px;
  z-index: 99;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.fc-item {
  width: 60px;
  height: 60px;
  background: var(--primary);
  color: #fff;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  transition: all .3s;
}
.fc-item:hover {
  background: var(--primary-dark);
  transform: translateX(-3px);
}
.fc-icon { font-size: 20px; margin-bottom: 2px; }

/* 文章详情 */
.article-page {
  padding: 30px 0 70px;
  background: var(--light-gray);
}
.article-container {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 30px;
  margin-top: 20px;
}
.article-content-wrap {
  background: #fff;
  padding: 35px;
  border-radius: 6px;
}
.art-header {
  margin-bottom: 25px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.art-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.4;
  margin-bottom: 15px;
}
.art-meta {
  font-size: 13px;
  color: var(--gray);
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.art-summary {
  padding: 15px 20px;
  background: #fff8e1;
  border-left: 4px solid var(--primary);
  margin-bottom: 25px;
  font-size: 14px;
  line-height: 1.8;
  color: #555;
}
.art-cover { margin-bottom: 25px; }
.art-cover img { width: 100%; height: auto; border-radius: 4px; }
.art-body {
  font-size: 16px;
  line-height: 1.9;
  color: #333;
}
.art-body p { margin-bottom: 20px; }
.art-body h2, .art-body h3 { margin: 28px 0 15px; font-weight: 600; }
.art-body img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 4px; }
.art-actions {
  margin-top: 40px;
  padding-top: 25px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  color: var(--gray);
}
.share-btn {
  display: inline-block;
  padding: 5px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-left: 10px;
  font-size: 13px;
}
.share-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.back-btn { color: var(--gray); }
.article-sidebar { display: flex; flex-direction: column; gap: 20px; }
.side-widget {
  background: #fff;
  padding: 25px;
  border-radius: 6px;
}
.side-widget h4 {
  font-size: 16px;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  color: var(--dark);
}
.side-widget p {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 15px;
}
.side-links li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 14px;
}
.side-links li a:hover { color: var(--primary); padding-left: 5px; }

/* 响应式 */
@media (max-width: 992px) {
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .about-flex { grid-template-columns: 1fr; gap: 40px; }
  .plat-grid { grid-template-columns: repeat(2, 1fr); }
  .serv-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { flex-wrap: wrap; }
  .step-line { display: none; }
  .step { min-width: calc(50% - 20px); }
  .contact-flex { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .article-container { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .menu-toggle { display: flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: 75px;
    left: 0;
    width: 100%;
    background: #fff;
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,.08);
  }
  .main-nav.open { display: flex; }
  .main-nav a { margin: 10px 0; }
  .main-nav a.active::after { display: none; }
  .top-bar { display: none; }
  .hero { height: auto; padding: 60px 0; }
  .hero-text h1 { font-size: 30px; }
  .hero-desc { font-size: 15px; }
  .hero-quick { gap: 25px; margin-top: 30px; }
  .hq-num { font-size: 28px; }
  .sec-head h2 { font-size: 26px; }
  .adv-grid { grid-template-columns: 1fr; }
  .plat-grid { grid-template-columns: 1fr; }
  .serv-grid { grid-template-columns: 1fr; }
  .step { min-width: 100%; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 25px; }
  .footer-grid { grid-template-columns: 1fr; }
  .float-customer { right: 10px; bottom: 20px; }
  .fc-item { width: 50px; height: 50px; font-size: 10px; }
  .fc-text { display: none; }
  .article-content-wrap { padding: 25px; }
  .art-title { font-size: 22px; }
  .art-meta { gap: 10px; font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}