:root {
  --primary: #4338ca;
  --primary-hover: #3730a3;
  --secondary: #0ea5e9;
  --accent: #f43f5e;
  --accent-warm: #f59e0b;
  --text-main: #0f172a;
  --text-muted: #475569;
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-soft: #f1f5f9;
  --border-color: #e2e8f0;
  --border-light: #cbd5e1;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 30px rgba(15, 23, 42, 0.12);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  font-size: 15px;
  scroll-behavior: smooth;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(14, 165, 233, 0.04) 0%, transparent 40%);
  background-attachment: fixed;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.25s ease;
}

ul, ol {
  list-style: none;
}

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

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

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

.brand-box {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-box img {
  height: 38px;
  width: auto;
  display: block;
}

.brand-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-link-item {
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
}

.nav-link-item:hover,
.nav-link-item.active {
  color: var(--primary);
  background: var(--bg-surface-soft);
}

.nav-cta-btn {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #ffffff;
  padding: 9px 20px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(67, 56, 202, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nav-cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(67, 56, 202, 0.35);
  color: #ffffff;
}

/* 模块通用样式 */
.section-wrapper {
  padding: 72px 0;
  position: relative;
}

.section-wrapper.bg-alt {
  background: #f1f5f9;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 48px;
}

.section-badge {
  display: inline-block;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(67, 56, 202, 0.08);
  border: 1px solid rgba(67, 56, 202, 0.15);
  border-radius: 20px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
}

/* 首屏 Hero 无图片纯色科技感 */
.hero-section {
  padding: 76px 0 64px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.8) 0%, rgba(241, 245, 249, 0.6) 100%);
  border-bottom: 1px solid var(--border-color);
}

.hero-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 880px;
  margin: 0 auto;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  padding: 6px 18px;
  border-radius: 40px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.hero-badge-pill span.dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 8px #10b981;
}

.hero-main-title {
  font-size: 40px;
  font-weight: 900;
  line-height: 1.25;
  color: var(--text-main);
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.hero-description {
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 740px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.btn-primary-official {
  background: linear-gradient(135deg, #4338ca, #2563eb);
  color: #ffffff;
  padding: 13px 32px;
  border-radius: 36px;
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary-official:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.4);
  color: #ffffff;
}

.btn-secondary-link {
  background: #ffffff;
  color: var(--text-main);
  border: 1px solid var(--border-light);
  padding: 13px 28px;
  border-radius: 36px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.btn-secondary-link:hover {
  background: var(--bg-surface-soft);
  border-color: var(--border-color);
  color: var(--primary);
}

/* 首屏指标卡片 */
.hero-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  width: 100%;
}

.stat-item-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-item-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.stat-num {
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
  font-feature-settings: "tnum";
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

/* 平台聚合与能力卡片 */
.grid-3-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4-col {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-box {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}

.feature-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.feature-icon-bar {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  background: rgba(67, 56, 202, 0.08);
  color: var(--primary);
  font-weight: 700;
  font-size: 18px;
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  flex-grow: 1;
}

/* 标签云 */
.tag-cloud-box {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  padding: 28px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.tag-badge {
  background: var(--bg-surface-soft);
  color: var(--text-main);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border-color);
  transition: all 0.2s;
}

.tag-badge:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

/* 场景卡片（细化） */
.scene-card-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.2s, transform 0.2s;
}

.scene-card-item:hover {
  border-color: var(--secondary);
  transform: translateY(-2px);
}

.scene-card-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.scene-card-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
}

/* 标准流程 */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.process-step-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
}

.step-badge {
  font-size: 12px;
  font-weight: 800;
  color: var(--primary);
  background: rgba(67, 56, 202, 0.1);
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.process-step-item h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.process-step-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 案例展示 */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.case-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #e2e8f0;
}

.case-img-wrap.square {
  aspect-ratio: 1 / 1;
}

.case-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}

.case-card:hover .case-img-wrap img {
  transform: scale(1.03);
}

.case-content {
  padding: 20px;
  flex-grow: 1;
}

.case-category {
  font-size: 12px;
  font-weight: 600;
  color: var(--secondary);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.case-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.case-desc {
  font-size: 13px;
  color: var(--text-muted);
}

/* 对比评测表格 */
.review-score-banner {
  background: linear-gradient(135deg, #1e1b4b, #312e81);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  box-shadow: var(--shadow-md);
}

.score-left h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}

.score-left p {
  color: #cbd5e1;
  font-size: 14px;
}

.score-right {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.score-big {
  font-size: 48px;
  font-weight: 900;
  color: #fbbf24;
  line-height: 1;
}

.score-max {
  font-size: 18px;
  color: #94a3b8;
}

.score-stars {
  color: #fbbf24;
  font-size: 18px;
  margin-left: 8px;
}

.table-responsive-box {
  overflow-x: auto;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.benchmark-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 680px;
}

.benchmark-table th,
.benchmark-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  font-size: 14px;
}

.benchmark-table th {
  background: #f8fafc;
  color: var(--text-main);
  font-weight: 700;
}

.benchmark-table tr:last-child td {
  border-bottom: none;
}

.benchmark-table td.highlight {
  font-weight: 700;
  color: var(--primary);
  background: rgba(67, 56, 202, 0.02);
}

/* 用户评论板块 */
.comment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.comment-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.comment-body {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  font-style: normal;
}

.comment-user-box {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
}

.user-avatar-initial {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-surface-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.user-info-meta h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
}

.user-info-meta p {
  font-size: 12px;
  color: var(--text-muted);
}

/* FAQ 折叠 */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-question:hover {
  background: #f8fafc;
}

.faq-icon {
  font-size: 18px;
  transition: transform 0.25s;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  background: #fafafa;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.65;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--border-color);
}

/* 咨询与表单 */
.contact-section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info-panel {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.contact-info-panel h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
}

.contact-item-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.contact-item-label {
  font-size: 13px;
  color: var(--text-muted);
}

.contact-item-val {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.kefu-qr-box {
  margin-top: 24px;
  text-align: center;
  background: #f8fafc;
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: inline-block;
}

.kefu-qr-box img {
  width: 140px;
  height: 140px;
  object-fit: contain;
  display: block;
  margin: 0 auto 8px;
}

.kefu-qr-box p {
  font-size: 12px;
  color: var(--text-muted);
}

.form-panel {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.form-panel h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.2s;
}

.form-control:focus {
  border-color: var(--primary);
}

textarea.form-control {
  resize: vertical;
  min-height: 90px;
}

.btn-form-submit {
  width: 100%;
  background: var(--primary);
  color: #ffffff;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-form-submit:hover {
  background: var(--primary-hover);
}

/* 资讯与友情链接 */
.news-article-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.news-card-simple {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  font-size: 13px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.news-card-simple a {
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 10px;
}

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

.news-card-simple .date {
  font-size: 12px;
  color: #94a3b8;
}

/* 页脚 */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 56px 0 24px;
  font-size: 13px;
  border-top: 1px solid #1e293b;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-brand-col h4 {
  color: #ffffff;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-brand-col p {
  line-height: 1.6;
  margin-bottom: 16px;
  max-width: 320px;
}

.footer-nav-col h5 {
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
}

.footer-nav-col ul li {
  margin-bottom: 8px;
}

.footer-nav-col ul li a {
  color: #94a3b8;
}

.footer-nav-col ul li a:hover {
  color: #ffffff;
}

.friend-links-box {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.friend-links-box a {
  color: #94a3b8;
  background: #1e293b;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
}

.friend-links-box a:hover {
  color: #ffffff;
  background: #334155;
}

.footer-bottom-bar {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom-bar a {
  color: #94a3b8;
}

.footer-bottom-bar a:hover {
  color: #ffffff;
}

/* 浮动组件 */
.floating-widget {
  position: fixed;
  right: 24px;
  bottom: 30px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.float-btn {
  width: 44px;
  height: 44px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  color: var(--text-main);
  cursor: pointer;
  transition: transform 0.2s;
}

.float-btn:hover {
  transform: scale(1.08);
  color: var(--primary);
}

/* 移动端汉堡菜单 */
.menu-toggle-btn {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-main);
  margin: 5px 0;
  transition: 0.2s;
}

/* 响应式断点 */
@media (max-width: 1024px) {
  .grid-4-col,
  .hero-stat-grid,
  .process-grid,
  .news-article-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3-col,
  .case-grid,
  .comment-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .menu-toggle-btn {
    display: block;
  }
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .nav-links.show {
    display: flex;
  }
  .nav-link-item {
    width: 100%;
    text-align: center;
    padding: 12px;
  }
  .hero-main-title {
    font-size: 28px;
  }
  .hero-stat-grid,
  .grid-3-col,
  .grid-4-col,
  .process-grid,
  .case-grid,
  .comment-grid,
  .contact-section-grid,
  .news-article-list,
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .review-score-banner {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
  .footer-bottom-bar {
    flex-direction: column;
    text-align: center;
  }
}