:root {
  --primary: #00b853;
  --primary-hover: #009944;
  --primary-dark: #00682e;
  --primary-light: #e6f9ed;
  --primary-glow: rgba(0, 184, 83, 0.25);
  --text-main: #141c17;
  --text-muted: #4e5b53;
  --text-light: #7c8a81;
  --bg-main: #f8faf8;
  --bg-card: #ffffff;
  --border: #e0eae2;
  --border-focus: #00b853;
  --shadow-sm: 0 2px 8px rgba(10, 30, 18, 0.04);
  --shadow-md: 0 10px 24px rgba(10, 30, 18, 0.08);
  --shadow-lg: 0 16px 36px rgba(0, 184, 83, 0.12);
  --radius: 12px;
  --radius-lg: 20px;
  --max-w: 1200px;
  --transition: all 0.28s ease;
}

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

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  width: 100%;
  overflow-x: hidden;
  background: radial-gradient(circle at 10% 0%, #ebfbf0 0%, #f8faf8 60%);
}

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

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

.container {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 顶部导航 */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

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

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

.ai-page-logo {
  max-height: 42px;
  width: auto;
}

.brand-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}

.nav-links li a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 6px;
}

.nav-links li a:hover,
.nav-links li a.active {
  color: var(--primary-dark);
  background-color: var(--primary-light);
}

.nav-action {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-outline {
  border-color: var(--primary);
  color: var(--primary-dark);
  background-color: #ffffff;
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--text-main);
  transition: var(--transition);
}

/* 首屏 Hero */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--primary-light);
  color: var(--primary-dark);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(0, 184, 83, 0.2);
}

.hero-dot {
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--primary);
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title span {
  color: var(--primary);
}

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 36px;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

.btn-hero-primary {
  padding: 14px 34px;
  font-size: 1.05rem;
  background-color: var(--primary);
  color: #fff;
  border-radius: 10px;
  box-shadow: 0 8px 24px var(--primary-glow);
}

.btn-hero-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
}

.btn-hero-secondary {
  padding: 14px 30px;
  font-size: 1.05rem;
  background-color: #ffffff;
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.btn-hero-secondary:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

.hero-badges {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.hero-badge-card {
  background-color: #ffffff;
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  text-align: left;
}

.hero-badge-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 4px;
}

.hero-badge-desc {
  font-size: 0.88rem;
  color: var(--text-light);
}

/* 通用区块排版 */
.section {
  padding: 72px 0;
  position: relative;
}

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

.section-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary-dark);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
}

.section-intro {
  font-size: 1rem;
  color: var(--text-muted);
}

/* 卡片栅格 */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 32px;
}

.card {
  background-color: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.card:hover {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background-color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-dark);
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: 18px;
}

.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-main);
}

.card-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 平台模型支持清单 */
.model-tags-wrapper {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  margin-top: 30px;
}

.model-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.model-tag {
  background: var(--bg-main);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 7px 14px;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 500;
  transition: var(--transition);
}

.model-tag:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary-dark);
}

/* 流程图示 */
.timeline-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  position: relative;
}

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

.step-index {
  display: inline-block;
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 12px;
}

/* 评测表格模块 */
.rating-banner {
  background: linear-gradient(135deg, #00873d 0%, #00b853 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 36px;
}

.rating-info h3 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.rating-stars {
  font-size: 1.5rem;
  letter-spacing: 4px;
  color: #ffe600;
}

.rating-score-box {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  padding: 16px 28px;
  text-align: center;
  backdrop-filter: blur(4px);
}

.rating-score {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #ffffff;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 650px;
}

.compare-table th,
.compare-table td {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.compare-table th {
  background-color: var(--bg-main);
  font-weight: 700;
  color: var(--text-main);
}

.compare-table td.highlight {
  background-color: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 600;
}

/* 图片案例展示 */
.media-card {
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.media-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.media-img-wrap {
  position: relative;
  background: #eef2ef;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

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

.media-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-card-body {
  padding: 22px;
}

/* 客户评论卡片 */
.testimonial-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.testimonial-quote {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid #f0f4f1;
  padding-top: 14px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.author-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
}

.author-role {
  font-size: 0.82rem;
  color: var(--text-light);
}

/* 折叠面板 FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  background-color: #ffffff;
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-icon {
  width: 20px;
  height: 20px;
  position: relative;
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background-color: var(--primary-dark);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq-icon::before {
  width: 14px;
  height: 2px;
}

.faq-icon::after {
  width: 2px;
  height: 14px;
  transition: var(--transition);
}

.faq-item.active .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  padding-bottom: 20px;
}

/* 表单与需求匹配 */
.form-box {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  outline: none;
  background: var(--bg-main);
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--border-focus);
  background: #ffffff;
  box-shadow: 0 0 0 3px var(--primary-light);
}

textarea.form-control {
  resize: vertical;
  min-height: 110px;
}

/* 资讯与友情链接 */
.news-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.news-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-main);
  font-size: 0.95rem;
}

.news-item a:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
  padding-left: 24px;
}

/* 页脚 Footer */
footer.site-footer {
  background-color: #0b1c12;
  color: #cfdbd3;
  padding: 60px 0 30px;
  border-top: 4px solid var(--primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 1.05rem;
  margin-bottom: 18px;
  font-weight: 700;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: #a3b5aa;
  font-size: 0.9rem;
}

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

.footer-qrcode {
  width: 110px;
  height: 110px;
  background: #ffffff;
  padding: 6px;
  border-radius: 8px;
  margin-top: 10px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 0.88rem;
  color: #7b8e82;
}

.friendship-links {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.friendship-links a {
  color: #8c9f93;
  font-size: 0.85rem;
}

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

/* 浮动客服 */
.floating-contact {
  position: fixed;
  right: 24px;
  bottom: 30px;
  z-index: 99;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.float-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px var(--primary-glow);
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

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

/* 响应式断点 */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
  }
  .nav-links.active {
    display: flex;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links li a {
    width: 100%;
    padding: 12px 16px;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-section {
    padding: 50px 0 40px;
  }
}