:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --accent-neon: #06b6d4;
  --accent-warm: #f59e0b;
  --accent-pink: #ec4899;
  --accent-violet: #7c3aed;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-subtle: #f1f5f9;
  --text-main: #0f172a;
  --text-sub: #334155;
  --text-muted: #64748b;
  --border-light: #e2e8f0;
  --border-strong: #cbd5e1;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 35px -8px rgba(15, 23, 42, 0.12);
  --transition: all 0.25s ease-in-out;
}

* {
  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-page);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  width: 100%;
  overflow-x: hidden;
  background: radial-gradient(circle at 10% 0%, rgba(37,99,235,0.06) 0%, transparent 40%),
              radial-gradient(circle at 90% 20%, rgba(236,72,153,0.05) 0%, transparent 35%),
              linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

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

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

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--border-light);
}

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

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

.brand-logo-wrap {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-title {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-main);
}

.brand-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  background: #fef3c7;
  color: #b45309;
  border: 1px solid #fde68a;
  margin-left: 6px;
}

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

.nav-links li a {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.nav-links li a:hover {
  color: var(--primary);
  background: var(--bg-subtle);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-accent {
  background: #ff5e36;
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(255, 94, 54, 0.35);
}

.btn-accent:hover {
  background: #e04822;
  transform: translateY(-2px);
}

.btn-outline {
  background: #ffffff;
  color: var(--text-main);
  border-color: var(--border-strong);
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-main);
}

/* 模块通用样式 */
.section {
  padding: 80px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 800;
  border-radius: 999px;
  background: #dbeafe;
  color: #1e40af;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
  line-height: 1.3;
}

.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Hero 首屏 - 撞色纯CSS构建 */
.hero-section {
  padding: 90px 0 70px;
  background: linear-gradient(135deg, #f0f9ff 0%, #ede9fe 50%, #fff1f2 100%);
  border-bottom: 2px solid var(--border-light);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.hero-content h1 {
  font-size: 40px;
  font-weight: 900;
  line-height: 1.25;
  color: #0f172a;
  margin-bottom: 20px;
}

.hero-content h1 span {
  background: linear-gradient(90deg, #2563eb, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-sub);
  margin-bottom: 30px;
  line-height: 1.8;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.hero-badge-item {
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.btn-hero-main {
  font-size: 16px;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  background: #ff0055;
  color: #ffffff;
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(255, 0, 85, 0.35);
  border: 2px solid #ff0055;
}

.btn-hero-main:hover {
  background: #d90048;
  transform: translateY(-3px);
}

.btn-hero-sub {
  font-size: 16px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  background: #ffffff;
  color: #0f172a;
  font-weight: 800;
  border: 2px solid #0f172a;
}

.btn-hero-sub:hover {
  background: #0f172a;
  color: #ffffff;
  transform: translateY(-3px);
}

/* 首屏右侧数据看板（无图纯CSS） */
.hero-card-panel {
  background: #ffffff;
  border: 2px solid #0f172a;
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: 10px 10px 0px #0f172a;
  position: relative;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--border-light);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.panel-title {
  font-weight: 800;
  font-size: 17px;
  color: var(--text-main);
}

.panel-status {
  background: #10b981;
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 20px;
}

.panel-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.stat-box {
  background: var(--bg-subtle);
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-val {
  font-size: 24px;
  font-weight: 900;
  color: var(--text-main);
  margin-top: 4px;
}

.panel-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.model-pill {
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  background: #e0f2fe;
  color: #0369a1;
}

/* 数据指标栏 */
.stats-strip {
  background: #0f172a;
  color: #ffffff;
  padding: 40px 0;
}

.stats-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.strip-item h3 {
  font-size: 36px;
  font-weight: 900;
  color: #38bdf8;
  margin-bottom: 4px;
}

.strip-item p {
  font-size: 14px;
  color: #94a3b8;
  font-weight: 600;
}

/* 平台核心能力卡片 */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.feature-card {
  background: var(--bg-card);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  font-weight: 900;
}

.icon-blue { background: #dbeafe; color: #2563eb; }
.icon-purple { background: #f3e8ff; color: #7c3aed; }
.icon-pink { background: #fce7f3; color: #ec4899; }
.icon-amber { background: #fef3c7; color: #d97706; }
.icon-green { background: #dcfce7; color: #16a34a; }
.icon-cyan { background: #cffafe; color: #0891b2; }

.feature-card h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  flex-grow: 1;
}

/* 场景全景展示 - 撞色多卡片 */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.scene-card {
  background: #ffffff;
  border-left: 6px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  border-top: 1px solid var(--border-light);
  border-right: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

.scene-card:hover {
  border-left-color: var(--accent-pink);
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.scene-card h4 {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.scene-tag-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: #f1f5f9;
  color: #475569;
  font-weight: 600;
}

.scene-card p {
  font-size: 13.5px;
  color: var(--text-sub);
  line-height: 1.6;
}

/* 模型聚合矩阵展示 */
.models-matrix {
  background: #ffffff;
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}

.model-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.chip {
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  background: #f8fafc;
  border: 1.5px solid #cbd5e1;
  font-size: 14px;
  font-weight: 700;
  color: #1e293b;
  transition: var(--transition);
}

.chip:hover {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
  transform: translateY(-2px);
}

/* 视觉素材展示区 */
.media-showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: stretch;
}

.media-box {
  background: #ffffff;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.media-box-img-wrap {
  background: #f1f5f9;
  width: 100%;
  overflow: hidden;
}

.media-box-img-wrap img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.media-box:hover .media-box-img-wrap img {
  transform: scale(1.03);
}

.media-box-body {
  padding: 20px;
}

.media-box-body h4 {
  font-size: 17px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}

.media-box-body p {
  font-size: 13.5px;
  color: var(--text-sub);
  line-height: 1.6;
}

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

.process-step {
  background: #ffffff;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.step-number {
  font-size: 32px;
  font-weight: 900;
  color: #cbd5e1;
  line-height: 1;
  margin-bottom: 12px;
}

.step-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.6;
}

/* 对比评测 - 突出五星与 9.9 高分 */
.review-highlight-card {
  background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 30px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.review-score-box {
  display: flex;
  align-items: center;
  gap: 20px;
}

.score-big {
  font-size: 64px;
  font-weight: 900;
  color: #fbbf24;
  line-height: 1;
}

.score-details h3 {
  font-size: 22px;
  font-weight: 800;
  color: #ffffff;
}

.stars-row {
  color: #fbbf24;
  font-size: 20px;
  letter-spacing: 4px;
  margin-top: 4px;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-light);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
}

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

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

.comparison-table th {
  background: var(--bg-subtle);
  font-weight: 800;
  color: var(--text-main);
}

.comparison-table tr:hover td {
  background: #f8fafc;
}

.highlight-cell {
  background: #eff6ff;
  font-weight: 700;
  color: #1d4ed8;
}

/* Token 比价卡片区 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.price-card {
  background: #ffffff;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  position: relative;
  transition: var(--transition);
}

.price-card.featured {
  border-color: #ff0055;
  box-shadow: 0 12px 30px rgba(255, 0, 85, 0.15);
}

.badge-featured {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: #ff0055;
  color: #ffffff;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 999px;
}

.price-val {
  font-size: 36px;
  font-weight: 900;
  color: var(--text-main);
  margin: 16px 0;
}

.price-val small {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 600;
}

.price-features {
  list-style: none;
  margin: 24px 0;
  text-align: left;
  font-size: 14px;
  color: var(--text-sub);
}

.price-features li {
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 用户评论卡片 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: #ffffff;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-text {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 16px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-light);
  padding-top: 14px;
}

.author-avatar-badge {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #2563eb;
  color: #ffffff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.author-info h5 {
  font-size: 14px;
  font-weight: 800;
  color: var(--text-main);
}

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

/* FAQ 折叠面板 */
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: #ffffff;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  background: none;
  border: none;
  font-size: 16px;
  font-weight: 800;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-icon {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  transition: transform 0.2s ease;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  background: #f8fafc;
  border-top: 1px solid transparent;
}

.faq-answer-content {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

.faq-item.active {
  border-color: var(--primary);
}

.faq-item.active .faq-answer {
  max-height: 200px;
  border-top-color: var(--border-light);
}

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

/* 文章列表与资讯 */
.articles-wrapper {
  background: #ffffff;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 30px;
}

.article-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.art-btn-link {
  display: block;
  padding: 12px 16px;
  background: var(--bg-subtle);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  text-align: center;
  border: 1px solid var(--border-light);
}

.art-btn-link:hover {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
}

/* 需求提交表单与联系我们 */
.contact-section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-card-info {
  background: #ffffff;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.contact-info-list {
  list-style: none;
  margin: 24px 0;
}

.contact-info-list li {
  font-size: 15px;
  color: var(--text-sub);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.contact-info-list strong {
  color: var(--text-main);
  width: 100px;
}

.qr-box {
  background: var(--bg-subtle);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  max-width: 220px;
}

.form-card {
  background: #ffffff;
  border: 2px solid var(--text-main);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: 8px 8px 0px var(--text-main);
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 14px;
  background: #ffffff;
  color: var(--text-main);
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

/* 代理加盟政策 */
.agent-banner {
  background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 100%);
  border: 2px solid #fed7aa;
  border-radius: var(--radius-lg);
  padding: 40px;
}

.agent-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.agent-item {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid #fdba74;
}

.agent-item h4 {
  font-size: 16px;
  font-weight: 800;
  color: #9a3412;
  margin-bottom: 8px;
}

.agent-item p {
  font-size: 13px;
  color: #7c2d12;
  line-height: 1.6;
}

/* 页脚 */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 60px 0 30px;
  border-top: 4px solid #2563eb;
}

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

.footer-col h4 {
  font-size: 16px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 18px;
}

.footer-col p {
  font-size: 13.5px;
  line-height: 1.7;
}

.footer-nav {
  list-style: none;
}

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

.footer-nav a {
  font-size: 13.5px;
  color: #94a3b8;
}

.footer-nav a:hover {
  color: #38bdf8;
}

.friend-links-wrap {
  border-top: 1px solid #1e293b;
  padding: 24px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.friend-links-title {
  font-size: 14px;
  font-weight: 800;
  color: #ffffff;
}

.friend-links a {
  font-size: 13px;
  color: #94a3b8;
  margin-right: 14px;
}

.friend-links a:hover {
  color: #38bdf8;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #64748b;
}

/* 浮动组件与返回顶部 */
.floating-actions {
  position: fixed;
  right: 20px;
  bottom: 30px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 99;
}

.float-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #ffffff;
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  border: 2px solid var(--border-light);
  cursor: pointer;
  font-size: 18px;
  font-weight: 800;
  transition: var(--transition);
}

.float-btn:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  transform: translateY(-3px);
}

/* 响应式断点适配 */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .grid-3, .scene-grid, .pricing-grid, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4, .process-timeline, .agent-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 16px 0;
    border-bottom: 2px solid var(--border-light);
    box-shadow: var(--shadow-md);
  }
  .nav-links.show { display: flex; }
  .nav-links li a { width: 100%; padding: 12px 24px; }
  .nav-actions { display: none; }
  .hero-content h1 { font-size: 28px; }
  .section-title { font-size: 24px; }
  .stats-container { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .grid-4, .scene-grid, .pricing-grid, .reviews-grid, .process-timeline, .agent-grid, .media-showcase-grid, .contact-section-grid { grid-template-columns: 1fr; }
  .footer-top-grid { grid-template-columns: 1fr; }
  .review-highlight-card { flex-direction: column; text-align: center; }
  .review-score-box { flex-direction: column; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
}