/* ============================================
   河马剧场 - 全局样式表
   主题：娱乐/短剧平台风格
   配色：紫粉渐变 + 深色背景
   ============================================ */

/* CSS 变量 */
:root {
  --primary: #8b5cf6;
  --primary-dark: #7c3aed;
  --primary-light: #a78bfa;
  --secondary: #ec4899;
  --secondary-light: #f472b6;
  --accent: #f59e0b;
  --bg-dark: #0f0f1a;
  --bg-darker: #0a0a12;
  --bg-card: #1a1a2e;
  --bg-card-hover: #252542;
  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --text-muted: #718096;
  --border: #2d2d4a;
  --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%);
  --gradient-dark: linear-gradient(180deg, #1a1a2e 0%, #0f0f1a 100%);
  --shadow-lg: 0 20px 60px rgba(139, 92, 246, 0.3);
  --shadow-md: 0 10px 30px rgba(139, 92, 246, 0.2);
  --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.3);
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 重置样式 */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-darker);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

/* 容器 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============ 导航栏 ============ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 18, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: 0 5px 30px rgba(0, 0, 0, 0.5);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  -webkit-text-fill-color: initial;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav__list {
  display: flex;
  gap: 30px;
}

.nav__link {
  position: relative;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
}

.nav__link:hover,
.nav__link.active {
  color: var(--text-primary);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.header__btn {
  background: var(--gradient-primary);
  color: white;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
  transition: var(--transition);
}

.header__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(139, 92, 246, 0.5);
}

/* 移动端菜单按钮 */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.mobile-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============ Hero 区域 ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 70px;
  overflow: hidden;
  background: radial-gradient(ellipse at top, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at bottom, rgba(236, 72, 153, 0.1) 0%, transparent 50%),
              var(--bg-darker);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%238b5cf6' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero__content {
  animation: fadeInUp 1s ease-out;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 25px;
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero__title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero__title-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 35px;
  line-height: 1.8;
}

.hero__btns {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 35px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 10px 30px rgba(139, 92, 246, 0.4);
}

.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(139, 92, 246, 0.5);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary);
  transform: translateY(-3px);
}

.hero__stats {
  display: flex;
  gap: 40px;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.hero__stat-num {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero__visual {
  position: relative;
  animation: fadeInRight 1s ease-out;
}

.hero__img-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero__img-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(236, 72, 153, 0.2) 100%);
  pointer-events: none;
}

.hero__img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.hero__floating-card {
  position: absolute;
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 15px;
  box-shadow: var(--shadow-md);
  animation: float 3s ease-in-out infinite;
}

.hero__floating-card--1 {
  top: 30px;
  left: -30px;
  animation-delay: 0s;
}

.hero__floating-card--2 {
  bottom: 30px;
  right: -30px;
  animation-delay: 1.5s;
}

.hero__floating-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.hero__floating-icon--pink {
  background: linear-gradient(135deg, #ec4899, #f472b6);
}

.hero__floating-icon--purple {
  background: linear-gradient(135deg, #8b5cf6, #a78bfa);
}

.hero__floating-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.hero__floating-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============ 通用 Section ============ */
.section {
  padding: 100px 0;
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title__label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 15px;
}

.section-title__heading {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 15px;
}

.section-title__heading-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title__desc {
  max-width: 600px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* ============ Features 特性区 ============ */
.features {
  background: var(--bg-dark);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  background: var(--bg-card-hover);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card__icon {
  width: 70px;
  height: 70px;
  border-radius: 16px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 25px;
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.3);
}

.feature-card__title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.feature-card__desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ============ Services 服务区 ============ */
.services {
  background: var(--bg-darker);
}

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

.service-item {
  display: flex;
  gap: 25px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 35px;
  transition: var(--transition);
}

.service-item:hover {
  border-color: var(--secondary);
  transform: translateX(10px);
}

.service-item__num {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(236, 72, 153, 0.15);
  border: 1px solid rgba(236, 72, 153, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--secondary-light);
}

.service-item__content h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  font-weight: 700;
}

.service-item__content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ============ Content 内容详情区 ============ */
.content-section {
  background: var(--bg-dark);
}

.content-section__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.content-section__img {
  position: relative;
}

.content-section__img-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.content-section__img img {
  width: 100%;
  height: 450px;
  object-fit: cover;
}

.content-section__play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  animation: pulse 2s infinite;
}

.content-section__play-btn:hover {
  transform: translate(-50%, -50%) scale(1.1);
}

.content-section__title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 25px;
  line-height: 1.3;
}

.content-section__text {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.9;
}

.content-section__list {
  margin-top: 25px;
}

.content-section__list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.content-section__list-item::before {
  content: '✓';
  width: 24px;
  height: 24px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ============ CTA 行动号召区 ============ */
.cta {
  position: relative;
  background: var(--bg-darker);
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta__inner {
  position: relative;
  z-index: 1;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  padding: 70px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.cta__title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: white;
}

.cta__desc {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 35px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta__btns {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn--white {
  background: white;
  color: var(--primary-dark);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn--white:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.btn--outline-white {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.5);
  color: white;
}

.btn--outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
  transform: translateY(-3px);
}

/* ============ FAQ 常见问题区 ============ */
.faq {
  background: var(--bg-dark);
}

.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 15px;
  overflow: hidden;
  transition: var(--transition);
}

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

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 25px 30px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  background: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
}

.faq__question-icon {
  width: 30px;
  height: 30px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq__item.active .faq__question-icon {
  transform: rotate(45deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq__item.active .faq__answer {
  max-height: 300px;
  padding: 0 30px 25px;
}

.faq__answer p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.95rem;
}

/* ============ Footer 页脚 ============ */
.footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border);
  padding-top: 80px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 60px;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer__desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  max-width: 350px;
}

.footer__socials {
  display: flex;
  gap: 12px;
}

.footer__social-link {
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition);
}

.footer__social-link:hover {
  background: var(--gradient-primary);
  border-color: transparent;
  transform: translateY(-3px);
}

.footer__col-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__link {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer__link:hover {
  color: var(--primary-light);
  transform: translateX(5px);
}

.footer__bottom {
  border-top: 1px solid var(--border);
  padding: 25px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.footer__copyright {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer__bottom-links {
  display: flex;
  gap: 25px;
}

.footer__bottom-link {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: var(--transition);
}

.footer__bottom-link:hover {
  color: var(--primary-light);
}

/* ============ 内页 Banner ============ */
.page-banner {
  padding: 150px 0 100px;
  background: radial-gradient(ellipse at top, rgba(139, 92, 246, 0.15) 0%, transparent 60%),
              var(--bg-darker);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%238b5cf6' fill-opacity='0.03'%3E%3Cpath d='M20 0L20 40M0 20L40 20'/%3E%3C/g%3E%3C/svg%3E");
}

.page-banner__inner {
  position: relative;
  z-index: 1;
}

.page-banner__title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease-out;
}

.page-banner__desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 25px;
  font-size: 0.85rem;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.breadcrumb__link {
  color: var(--text-muted);
}

.breadcrumb__link:hover {
  color: var(--primary-light);
}

.breadcrumb__separator {
  color: var(--text-muted);
}

.breadcrumb__current {
  color: var(--primary-light);
}

/* ============ About 关于页 ============ */
.about-intro {
  padding: 80px 0;
  background: var(--bg-dark);
}

.about-intro__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-intro__img-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-intro__img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.about-intro__title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.about-intro__text {
  color: var(--text-secondary);
  margin-bottom: 18px;
  line-height: 1.9;
}

.about-values {
  background: var(--bg-darker);
}

.values__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 35px 25px;
  text-align: center;
  transition: var(--transition);
}

.value-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.value-card__icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.value-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.value-card__desc {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.7;
}

.timeline {
  background: var(--bg-dark);
}

.timeline__list {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.timeline__list::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline__item {
  display: flex;
  margin-bottom: 50px;
  position: relative;
}

.timeline__item:nth-child(odd) {
  flex-direction: row;
}

.timeline__item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline__content {
  width: 45%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 25px;
  transition: var(--transition);
}

.timeline__content:hover {
  border-color: var(--primary);
  transform: scale(1.02);
}

.timeline__dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  background: var(--gradient-primary);
  border-radius: 50%;
  top: 25px;
  box-shadow: 0 0 0 6px rgba(139, 92, 246, 0.2);
}

.timeline__year {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-light);
  margin-bottom: 8px;
}

.timeline__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.timeline__desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ============ Products 产品页 ============ */
.products {
  background: var(--bg-dark);
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.product-card__img-wrapper {
  position: relative;
  overflow: hidden;
  height: 250px;
}

.product-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .product-card__img {
  transform: scale(1.1);
}

.product-card__badge {
  position: absolute;
  top: 15px;
  left: 15px;
  background: var(--gradient-primary);
  color: white;
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.product-card__play {
  position: absolute;
  bottom: 15px;
  right: 15px;
  width: 45px;
  height: 45px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
}

.product-card:hover .product-card__play {
  background: var(--gradient-primary);
  transform: scale(1.1);
}

.product-card__body {
  padding: 25px;
}

.product-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.product-card__desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 15px;
}

.product-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 15px;
  border-top: 1px solid var(--border);
}

.product-card__rating {
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
}

.product-card__views {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.products-filter {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 25px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
}

/* ============ News 新闻页 ============ */
.news {
  background: var(--bg-dark);
}

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

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.news-card__img-wrapper {
  height: 220px;
  overflow: hidden;
}

.news-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.news-card:hover .news-card__img {
  transform: scale(1.1);
}

.news-card__body {
  padding: 25px;
}

.news-card__meta {
  display: flex;
  gap: 15px;
  margin-bottom: 12px;
}

.news-card__tag {
  background: rgba(139, 92, 246, 0.15);
  color: var(--primary-light);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.news-card__date {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.news-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.5;
  transition: color 0.3s ease;
}

.news-card:hover .news-card__title {
  color: var(--primary-light);
}

.news-card__excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 15px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card__readmore {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-light);
  font-size: 0.88rem;
  font-weight: 600;
}

.news-card__readmore:hover {
  gap: 12px;
}

/* ============ News Detail 详情页 ============ */
.news-detail {
  background: var(--bg-dark);
}

.news-detail__inner {
  max-width: 900px;
  margin: 0 auto;
}

.news-detail__header {
  text-align: center;
  margin-bottom: 40px;
}

.news-detail__meta {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 20px;
}

.news-detail__tag {
  background: rgba(139, 92, 246, 0.15);
  color: var(--primary-light);
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.news-detail__date {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.news-detail__title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 25px;
}

.news-detail__author {
  display: flex;
  justify-content: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.news-detail__img-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  box-shadow: var(--shadow-md);
}

.news-detail__img {
  width: 100%;
  height: 450px;
  object-fit: cover;
}

.news-detail__content {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 2;
}

.news-detail__content p {
  margin-bottom: 25px;
}

.news-detail__content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 35px 0 15px;
  color: var(--text-primary);
}

.news-detail__content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg-card);
  padding: 20px 25px;
  margin: 25px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-primary);
  font-style: italic;
}

.news-detail__tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.news-detail__tag-link {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.news-detail__tag-link:hover {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
}

/* ============ Contact 联系页 ============ */
.contact {
  background: var(--bg-dark);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info__title {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.contact-info__desc {
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}

.contact-info__items {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.contact-info__item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.contact-info__icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-info__label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 5px;
}

.contact-info__value {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 500;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

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

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-darker);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
}

/* ============ 动画定义 ============ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.1);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-15px);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ 返回顶部 ============ */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}

.back-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* ============ 响应式设计 ============ */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero__title {
    font-size: 2.8rem;
  }

  .hero__visual {
    max-width: 500px;
    margin: 0 auto;
  }

  .hero__stats {
    justify-content: center;
  }

  .content-section__inner,
  .about-intro__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .features__grid,
  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .services__grid {
    grid-template-columns: 1fr;
  }

  .values__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .news__grid {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }

  .hero__floating-card--1 {
    left: -10px;
  }

  .hero__floating-card--2 {
    right: -10px;
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 18, 0.98);
    backdrop-filter: blur(20px);
    padding: 30px;
    flex-direction: column;
    gap: 20px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__list {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }

  .mobile-toggle {
    display: flex;
  }

  .header__btn {
    display: none;
  }

  .hero__title {
    font-size: 2.2rem;
  }

  .hero__img {
    height: 350px;
  }

  .hero__stats {
    gap: 25px;
    flex-wrap: wrap;
  }

  .section {
    padding: 70px 0;
  }

  .section-title__heading {
    font-size: 2rem;
  }

  .features__grid,
  .products__grid {
    grid-template-columns: 1fr;
  }

  .values__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .cta__inner {
    padding: 50px 25px;
  }

  .cta__title {
    font-size: 1.8rem;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 35px;
  }

  .contact-form__row {
    grid-template-columns: 1fr;
  }

  .timeline__list::before {
    left: 20px;
  }

  .timeline__item,
  .timeline__item:nth-child(even) {
    flex-direction: row;
  }

  .timeline__content {
    width: 100%;
    margin-left: 50px;
  }

  .timeline__dot {
    left: 20px;
  }

  .page-banner__title {
    font-size: 2rem;
  }

  .news-detail__title {
    font-size: 1.8rem;
  }

  .news-detail__img {
    height: 280px;
  }

  .hero__floating-card {
    display: none;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: 1.8rem;
  }

  .btn {
    padding: 12px 28px;
    font-size: 0.9rem;
  }

  .hero__btns {
    flex-direction: column;
    width: 100%;
  }

  .hero__btns .btn {
    width: 100%;
    justify-content: center;
  }

  .values__grid {
    grid-template-columns: 1fr;
  }

  .section-title__heading {
    font-size: 1.6rem;
  }
}

/* ============ 打印样式 ============ */
@media print {
  .header,
  .footer,
  .cta,
  .mobile-toggle,
  .back-top {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
  }

  .container {
    max-width: 100% !important;
  }
}