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

body {
  font-family: "Microsoft YaHei", Arial, sans-serif;
  color: #fff;
  background: #000000;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 48px;
  background: rgba(8, 13, 24, 0.75);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
  height: 75px;
  overflow: visible;
}

.header__logo img {
  height: 110px;
  object-fit: contain;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 18.4px;
  color: #ced4da;
}


.header__nav a,
.header__nav-link {
  position: relative;
  padding: 6px 12px;
  transition: color 0.2s ease;
  color: #ced4da;
  text-decoration: none;
  cursor: pointer;
}

.header__nav a:hover,
.header__nav a.active,
.header__nav-link:hover {
  color: #00e676;
}

.highlight {
  font-weight: 700;
  color: #00e676;
}

.header__dropdown {
  position: relative;
}

.header__dropdown-menu,
.header__dropdown-submenu {
  display: none;
  position: absolute;
  top: 30px;
  left: 0;
  min-width: 150px;
  background: rgba(16, 20, 33, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px 12px;
  border-radius: 6px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
  flex-direction: column;
  gap: 6px;
  z-index: 101;
}

.header__dropdown:hover .header__dropdown-menu {
  display: flex;
}

.header__dropdown-sub {
  position: relative;
  padding: 6px 0;
  color: #adb5bd;
}

.header__dropdown-sub:hover .header__dropdown-submenu {
  display: flex;
  top: 0;
  left: 120px;
}

.header__dropdown-menu a:hover,
.header__dropdown-submenu a:hover {
  color: #00e676;
}

.hero {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(circle at 20% 20%, #122038, #070c16 55%);
  padding: 0;
  width: 100%;
  height: calc(100vh - 75px);
  min-height: 600px;
}

.hero__swiper {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
  border-radius: 0;
}

.hero__swiper .swiper-slide {
  position: relative;
  height: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  isolation: isolate;
  padding-bottom: 120px;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

.hero__bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.82) saturate(1.05);
}

.hero__content {
  position: absolute;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  max-width: 520px;
  text-align: center;
  text-shadow: 0 12px 40px rgba(0, 0, 0, 0.65);
}

.hero__tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(0, 230, 118, 0.5);
  color: #b2f5d5;
  font-weight: 600;
  margin-bottom: 14px;
  background: rgba(0, 230, 118, 0.08);
}

.hero__title {
  font-size: 44px;
  line-height: 1.2;
  margin-bottom: 12px;
}

.hero__subtitle {
  font-size: 20px;
  letter-spacing: 4px;
  color: #d8e2ec;
  margin-bottom: 28px;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  background: #00ad59;
  color: #fff;
  border-radius: 14px;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(0, 173, 89, 0.3);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-download img {
  height: 10px;
  width: 20px;
  object-fit: contain;
}

.btn-download:hover {
  transform: translateY(-2px);
  background: #00c266;
  box-shadow: 0 14px 32px rgba(0, 173, 89, 0.4);
}

/* 下载按钮容器样式 */
.download-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.download-loading {
  padding: 14px 22px;
  color: #fff;
  font-size: 14px;
  text-align: center;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

.download-message {
  min-height: 20px;
  font-size: 14px;
  text-align: center;
  margin-top: 5px;
}

.download-message .success {
  color: #00e676;
  padding: 8px 16px;
  background: rgba(0, 230, 118, 0.1);
  border-radius: 8px;
  border: 1px solid rgba(0, 230, 118, 0.3);
}

.download-message .error {
  color: #ff6b6b;
  padding: 8px 16px;
  background: rgba(255, 107, 107, 0.1);
  border-radius: 8px;
  border: 1px solid rgba(255, 107, 107, 0.3);
}

.hero__pagination {
  position: absolute;
  bottom: 40px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 8px;
  z-index: 3;
}

.hero__pagination .swiper-pagination-bullet {
  width: 10px;
  height: 10px;
  background: rgba(255, 255, 255, 0.4);
  opacity: 1;
  transition: width 0.2s ease, background 0.2s ease;
}

.hero__pagination .swiper-pagination-bullet-active {
  width: 24px;
  border-radius: 999px;
  background: #00e676;
}

.footer {
  display: flex;
  justify-content: space-between;
  padding: 28px 60px;
  background: #080d17;
  color: #adb5bd;
  font-size: 13px;
  gap: 12px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: auto;
  width: 100%;
}

.footer a {
  color: #adb5bd;
  text-decoration: underline;
}

@media (max-width: 900px) {
  .header {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 6px 20px;
    height: auto;
    min-height: 75px;
  }

  .header__logo {
    flex-shrink: 0;
  }

  .header__logo img {
    height: 80px;
  }

  .header__nav {
    gap: 12px;
    font-size: 16px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .header__nav-link {
    padding: 4px 8px;
    font-size: 14px;
  }

  .hero__swiper .swiper-slide {
    padding-bottom: 100px;
  }

  .hero__content {
    left: 50%;
    transform: translateX(-50%);
    right: auto;
    bottom: 80px;
    max-width: calc(100% - 48px);
    padding: 0 24px;
  }

  .hero__title {
    font-size: 32px;
  }

  .hero__subtitle {
    font-size: 16px;
  }

  .hero__pagination {
    bottom: 30px;
  }
}

@media (max-width: 600px) {
  .header {
    padding: 6px 16px;
    min-height: 70px;
    flex-wrap: wrap;
  }

  .header__logo {
    flex-shrink: 0;
  }

  .header__logo img {
    height: 70px;
  }

  .header__nav {
    gap: 8px;
    font-size: 14px;
    flex-wrap: wrap;
    justify-content: flex-end;
    width: 100%;
    margin-top: 4px;
  }

  .header__nav-link {
    padding: 4px 6px;
    font-size: 13px;
    white-space: nowrap;
  }

  .hero__content {
    bottom: 70px;
  }

  .hero__pagination {
    bottom: 20px;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 6px 12px;
    min-height: 65px;
  }

  .header__logo img {
    height: 60px;
  }

  .header__nav {
    gap: 6px;
    font-size: 13px;
  }

  .header__nav-link {
    padding: 3px 5px;
    font-size: 12px;
  }
}

/* 模态框样式 */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.modal-overlay.active {
  display: flex;
}

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

.modal-content {
  position: relative;
  background: linear-gradient(135deg, rgba(16, 20, 33, 0.95), rgba(8, 13, 24, 0.95));
  border: 1px solid rgba(0, 230, 118, 0.3);
  border-radius: 16px;
  padding: 40px 50px;
  max-width: 450px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: slideUp 0.3s ease;
  backdrop-filter: blur(12px);
}

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

.modal-close {
  position: absolute;
  top: 15px;
  right: 20px;
  background: none;
  border: none;
  color: #adb5bd;
  font-size: 32px;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  border-radius: 50%;
}

.modal-close:hover {
  color: #00e676;
  background: rgba(0, 230, 118, 0.1);
  transform: rotate(90deg);
}

.modal-title {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 30px;
  text-align: center;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px 20px;
  background: rgba(0, 230, 118, 0.08);
  border: 1px solid rgba(0, 230, 118, 0.2);
  border-radius: 10px;
  transition: all 0.2s ease;
}

.contact-item:hover {
  background: rgba(0, 230, 118, 0.12);
  border-color: rgba(0, 230, 118, 0.4);
}

.contact-label {
  font-size: 16px;
  font-weight: 600;
  color: #00e676;
  min-width: 60px;
}

.contact-value {
  font-size: 16px;
  color: #d8e2ec;
  font-weight: 500;
}

@media (max-width: 600px) {
  .modal-content {
    padding: 30px 30px;
    max-width: 90%;
  }

  .modal-title {
    font-size: 24px;
    margin-bottom: 25px;
  }

  .contact-item {
    padding: 12px 16px;
  }

  .contact-label,
  .contact-value {
    font-size: 14px;
  }
}