:root {
  --primary-red: #d91c24;
  --primary-hover: #b51219;
  --secondary-crimson: #800a0f;
  --accent-gold: #e6a13c;
  --bg-page: #fbf9f9;
  --bg-card: #ffffff;
  --text-main: #1f1f24;
  --text-muted: #5c5f66;
  --text-light: #8e929b;
  --border-color: #f0e2e2;
  --border-active: #f3c2c5;
  --card-shadow: 0 10px 30px rgba(217, 28, 36, 0.05);
  --hover-shadow: 0 18px 40px rgba(217, 28, 36, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
  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;
}

.site-container {
  width: 100%;
  max-width: 1280px;
  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(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

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

.brand-tagline {
  font-size: 12px;
  color: var(--text-muted);
  border-left: 1px solid var(--border-color);
  padding-left: 10px;
  margin-left: 2px;
}

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

.nav-links a {
  display: inline-block;
  padding: 8px 12px;
  color: var(--text-main);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary-red);
  background: rgba(217, 28, 36, 0.05);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-red) 0%, #ee3840 100%);
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(217, 28, 36, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(217, 28, 36, 0.4);
  background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-red) 100%);
}

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

.btn-outline:hover {
  background: rgba(217, 28, 36, 0.05);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-main);
  cursor: pointer;
}

/* 页面通用标题与排版 */
.section-pad {
  padding: 80px 0;
}

.section-pad-alt {
  padding: 80px 0;
  background: #fff5f5;
  border-top: 1px solid #fce8e8;
  border-bottom: 1px solid #fce8e8;
}

.section-head {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(217, 28, 36, 0.08);
  color: var(--primary-red);
  font-size: 13px;
  font-weight: 700;
  border-radius: 999px;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

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

/* 首屏 Hero (无图，纯CSS与科技质感排版) */
.hero-section {
  position: relative;
  padding: 100px 0 80px;
  background: radial-gradient(circle at 50% 20%, #fff0f0 0%, #ffffff 70%);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.hero-glow-1 {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(circle, rgba(217, 28, 36, 0.15) 0%, rgba(217, 28, 36, 0) 70%);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 960px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid #f9c7ca;
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--primary-red);
  font-weight: 600;
  margin-bottom: 24px;
  box-shadow: 0 4px 12px rgba(217, 28, 36, 0.08);
}

.hero-badge span {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary-red);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(217, 28, 36, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(217, 28, 36, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(217, 28, 36, 0); }
}

.hero-title {
  font-size: 44px;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title em {
  font-style: normal;
  color: var(--primary-red);
  background: linear-gradient(135deg, #d91c24 0%, #e6454c 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 780px;
  margin: 0 auto 36px;
}

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

.hero-cta .btn {
  padding: 14px 34px;
  font-size: 16px;
}

.hero-features-list {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  list-style: none;
  font-size: 14px;
  color: var(--text-muted);
}

.hero-features-list li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-features-list li::before {
  content: "✓";
  color: var(--primary-red);
  font-weight: 800;
}

/* 统计数据横幅 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: -40px;
  position: relative;
  z-index: 3;
}

.stat-card {
  background: #ffffff;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--hover-shadow);
  border-color: var(--border-active);
}

.stat-num {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary-red);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.stat-sub {
  font-size: 12px;
  color: var(--text-light);
}

/* 支持模型矩阵 */
.model-tags-wrapper {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--card-shadow);
}

.model-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.model-tag {
  background: #faf4f4;
  border: 1px solid #f6dada;
  color: #333333;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
}

.model-tag:hover {
  background: var(--primary-red);
  color: #ffffff;
  border-color: var(--primary-red);
  transform: translateY(-2px);
}

/* 卡片网格通用 */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.service-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-active);
  box-shadow: var(--hover-shadow);
}

.service-icon {
  width: 48px;
  height: 48px;
  background: #fff0f0;
  color: var(--primary-red);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 20px;
  border: 1px solid #fcdada;
}

.service-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

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

/* 场景与制作工坊多卡片展示 */
.scene-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  transition: var(--transition);
}

.scene-card:hover {
  border-color: var(--primary-red);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(217, 28, 36, 0.08);
}

.scene-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.scene-badge {
  font-size: 11px;
  background: rgba(217, 28, 36, 0.1);
  color: var(--primary-red);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
}

.scene-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
}

.scene-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 流程步骤 */
.steps-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.step-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  position: relative;
  box-shadow: var(--card-shadow);
}

.step-number {
  font-size: 28px;
  font-weight: 900;
  color: rgba(217, 28, 36, 0.2);
  line-height: 1;
  margin-bottom: 14px;
}

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

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

/* 对比评测卡片与表格 */
.eval-card {
  background: linear-gradient(135deg, #ffffff 0%, #fff8f8 100%);
  border: 2px solid #f6caca;
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 40px;
  box-shadow: 0 12px 36px rgba(217, 28, 36, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

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

.eval-score {
  font-size: 52px;
  font-weight: 900;
  color: var(--primary-red);
  line-height: 1;
}

.eval-stars {
  color: #ff9900;
  font-size: 22px;
  letter-spacing: 2px;
  margin-bottom: 6px;
}

.eval-info h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 6px;
}

.eval-info p {
  color: var(--text-muted);
  font-size: 14px;
}

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

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.custom-table th, .custom-table td {
  padding: 16px 20px;
  border-bottom: 1px solid #f3ecec;
}

.custom-table th {
  background: #faf4f4;
  color: var(--text-main);
  font-weight: 700;
}

.custom-table tr:hover {
  background: #fffdfd;
}

.custom-table .highlight-col {
  background: rgba(217, 28, 36, 0.03);
  font-weight: 700;
  color: var(--primary-red);
}

/* 案例与素材图展示 */
.media-gallery {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-bottom: 30px;
}

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

.media-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: var(--transition);
}

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

.media-stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.banner-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
}

.banner-item img {
  width: 100%;
  height: auto;
  display: block;
}

/* FAQ 折叠面板 */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
  transition: var(--transition);
}

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

.faq-question {
  padding: 18px 20px;
  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 {
  color: var(--primary-red);
}

.faq-arrow {
  font-size: 12px;
  transition: transform 0.3s ease;
  color: var(--text-muted);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  color: var(--primary-red);
}

.faq-answer {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: none;
  border-top: 1px dashed #f6e6e6;
  margin-top: 4px;
  padding-top: 12px;
}

/* 用户评价卡片 */
.testimonial-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: var(--border-active);
  transform: translateY(-4px);
  box-shadow: var(--hover-shadow);
}

.testimonial-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  position: relative;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid #f3ecec;
  padding-top: 14px;
}

.user-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #fff0f0;
  color: var(--primary-red);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  border: 1px solid #fcdada;
}

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

.user-role {
  font-size: 12px;
  color: var(--text-light);
}

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

.custom-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.form-group-full {
  grid-column: span 2;
}

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

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 14px;
  border: 1px solid #e5d8d8;
  border-radius: var(--radius-sm);
  background: #fafafa;
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary-red);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(217, 28, 36, 0.1);
}

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

/* 资讯与友情链接 */
.article-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  list-style: none;
}

.article-item a {
  display: block;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  text-decoration: none;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--card-shadow);
}

.article-item a:hover {
  border-color: var(--primary-red);
  color: var(--primary-red);
  transform: translateY(-2px);
}

.links-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  padding: 20px 0;
}

.links-cloud a {
  color: var(--text-muted);
  font-size: 13px;
  text-decoration: none;
  padding: 6px 14px;
  background: #ffffff;
  border: 1px solid #ede1e1;
  border-radius: 999px;
  transition: var(--transition);
}

.links-cloud a:hover {
  color: var(--primary-red);
  border-color: var(--primary-red);
  background: #fff8f8;
}

/* 页脚区域 */
.site-footer {
  background: #1a1616;
  color: #c9c7c7;
  padding: 60px 0 30px;
  border-top: 3px solid var(--primary-red);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 30px;
  margin-bottom: 40px;
}

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

.footer-brand p {
  font-size: 13px;
  line-height: 1.6;
  color: #9e9a9a;
}

.footer-col h5 {
  color: #ffffff;
  font-size: 15px;
  margin-bottom: 16px;
  font-weight: 700;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col ul li a {
  color: #a8a4a4;
  text-decoration: none;
  font-size: 13px;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: #ffffff;
  padding-left: 4px;
}

.qr-box {
  display: flex;
  align-items: center;
  gap: 16px;
}

.qr-image-wrap {
  width: 90px;
  height: 90px;
  background: #ffffff;
  padding: 4px;
  border-radius: 6px;
}

.qr-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.qr-info {
  font-size: 12px;
  color: #b0acac;
}

.qr-info p {
  margin-bottom: 4px;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid #2e2828;
  padding-top: 24px;
  font-size: 12px;
  color: #7a7575;
}

/* 浮动侧栏工具 */
.floating-sidebar {
  position: fixed;
  right: 20px;
  bottom: 80px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.float-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-red);
  font-size: 18px;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}

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

/* 响应式媒体查询 */
@media (max-width: 1024px) {
  .grid-4, .stats-grid, .steps-container {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-list {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
  .media-gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn-outline {
    display: none;
  }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #ffffff;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
  }
  .nav-toggle {
    display: block;
  }
  .hero-title {
    font-size: 28px;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .grid-3, .grid-4, .grid-2, .stats-grid, .steps-container, .faq-grid {
    grid-template-columns: 1fr;
  }
  .article-list {
    grid-template-columns: 1fr;
  }
  .banner-strip {
    grid-template-columns: 1fr;
  }
  .custom-form {
    grid-template-columns: 1fr;
  }
  .form-group-full {
    grid-column: span 1;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .eval-card {
    flex-direction: column;
    text-align: center;
  }
  .eval-score-box {
    flex-direction: column;
  }
  .floating-sidebar {
    right: 12px;
    bottom: 30px;
  }
}