/* ========================================
   FeYo电竞 - 赛博朋克风格样式表
   ======================================== */

/* 2.1 基础样式和CSS变量 */
:root {
  /* 赛博朋克配色 */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-tertiary: #1a1a2e;

  /* 霓虹色彩 */
  --color-neon-pink: #ff2a6d;
  --color-neon-cyan: #05d9e8;
  --color-neon-purple: #d300c5;
  --color-neon-yellow: #f9f002;
  --color-neon-blue: #01012b;

  /* 文字颜色 */
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0c0;
  --color-text-glow: #05d9e8;

  /* 间距变量 */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;

  /* 字体 */
  --font-family: 'Orbitron', 'Noto Sans SC', -apple-system, sans-serif;
  --font-family-cn: 'Noto Sans SC', -apple-system, sans-serif;

  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

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

body {
  font-family: var(--font-family-cn);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image:
    radial-gradient(ellipse at top, rgba(5, 217, 232, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at bottom, rgba(255, 42, 109, 0.1) 0%, transparent 50%);
}


/* ========================================
   2.2 Header样式 - 赛博朋克风格
   ======================================== */
.header {
  background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
  padding: var(--spacing-lg) var(--spacing-sm);
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 2px solid var(--color-neon-cyan);
  box-shadow: 0 0 30px rgba(5, 217, 232, 0.3);
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-neon-cyan), transparent);
}

.header__title {
  font-family: var(--font-family);
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 8px;
  text-shadow:
    0 0 10px var(--color-neon-cyan),
    0 0 20px var(--color-neon-cyan),
    0 0 40px var(--color-neon-cyan),
    0 0 80px var(--color-neon-pink);
  animation: titleGlow 2s ease-in-out infinite alternate;
}

.header__subtitle {
  font-family: var(--font-family-cn);
  font-size: 1.1rem;
  color: var(--color-neon-pink);
  margin-top: var(--spacing-sm);
  letter-spacing: 4px;
  text-shadow:
    0 0 5px var(--color-neon-pink),
    0 0 10px var(--color-neon-pink);
  animation: subtitleGlow 2s ease-in-out infinite alternate;
}

@keyframes titleGlow {
  from {
    text-shadow:
      0 0 10px var(--color-neon-cyan),
      0 0 20px var(--color-neon-cyan),
      0 0 40px var(--color-neon-cyan);
  }

  to {
    text-shadow:
      0 0 20px var(--color-neon-cyan),
      0 0 40px var(--color-neon-cyan),
      0 0 60px var(--color-neon-cyan),
      0 0 80px var(--color-neon-pink);
  }
}

@keyframes subtitleGlow {
  from {
    text-shadow:
      0 0 5px var(--color-neon-pink),
      0 0 10px var(--color-neon-pink);
  }

  to {
    text-shadow:
      0 0 10px var(--color-neon-pink),
      0 0 20px var(--color-neon-pink),
      0 0 30px var(--color-neon-purple);
  }
}

/* ========================================
   2.3 分类标签样式 - 赛博朋克风格
   ======================================== */
.tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  border-bottom: 1px solid rgba(5, 217, 232, 0.3);
}

.tabs__item {
  padding: 14px 28px;
  font-size: 1rem;
  font-family: var(--font-family-cn);
  font-weight: 600;
  color: var(--color-text-secondary);
  background: transparent;
  border: 2px solid rgba(5, 217, 232, 0.3);
  border-radius: 0;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  text-transform: uppercase;
  letter-spacing: 2px;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.tabs__item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(5, 217, 232, 0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.tabs__item:hover {
  color: var(--color-neon-cyan);
  border-color: var(--color-neon-cyan);
  box-shadow:
    0 0 10px rgba(5, 217, 232, 0.5),
    inset 0 0 10px rgba(5, 217, 232, 0.1);
}

.tabs__item:hover::before {
  opacity: 1;
}

.tabs__item--active {
  color: var(--color-text-primary);
  background: linear-gradient(135deg, var(--color-neon-pink), var(--color-neon-purple));
  border-color: var(--color-neon-pink);
  box-shadow:
    0 0 20px rgba(255, 42, 109, 0.6),
    0 0 40px rgba(255, 42, 109, 0.3);
}

.tabs__item--active:hover {
  border-color: var(--color-neon-pink);
  box-shadow:
    0 0 30px rgba(255, 42, 109, 0.8),
    0 0 60px rgba(255, 42, 109, 0.4);
}


/* ========================================
   2.4 内容区域样式 - 赛博朋克风格
   ======================================== */
.content {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: var(--spacing-lg) var(--spacing-sm);
  background: var(--color-bg-primary);
  position: relative;
}

.content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-neon-cyan), transparent);
}

.content__panel {
  display: none;
  width: 100%;
  max-width: 800px;
  text-align: center;
  animation: fadeIn 0.3s ease;
}

.content__panel--active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.content__image {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  box-shadow:
    0 0 20px rgba(5, 217, 232, 0.3),
    0 0 40px rgba(255, 42, 109, 0.2),
    0 4px 30px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(5, 217, 232, 0.3);
  transition: all var(--transition-normal);
}

.content__image:hover {
  box-shadow:
    0 0 30px rgba(5, 217, 232, 0.5),
    0 0 60px rgba(255, 42, 109, 0.3),
    0 8px 40px rgba(0, 0, 0, 0.6);
  border-color: var(--color-neon-cyan);
}

/* ========================================
   2.5 Footer样式 - 赛博朋克风格
   ======================================== */
.footer {
  background: var(--color-bg-secondary);
  padding: var(--spacing-md);
  text-align: center;
  border-top: 1px solid rgba(5, 217, 232, 0.3);
  margin-top: auto;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-neon-pink), transparent);
}

.footer__icp {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  letter-spacing: 1px;
}

.footer__icp a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.footer__icp a:hover {
  color: var(--color-neon-cyan);
  text-shadow: 0 0 5px var(--color-neon-cyan);
}

.footer__nav {
  margin-bottom: var(--spacing-sm);
}

.footer__nav-link {
  display: inline-block;
  padding: 8px 20px;
  font-size: 0.9rem;
  font-family: var(--font-family-cn);
  font-weight: 600;
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid rgba(5, 217, 232, 0.3);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  letter-spacing: 1px;
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.footer__nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(5, 217, 232, 0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.footer__nav-link:hover {
  color: var(--color-neon-cyan);
  border-color: var(--color-neon-cyan);
  box-shadow:
    0 0 10px rgba(5, 217, 232, 0.5),
    inset 0 0 10px rgba(5, 217, 232, 0.1);
}

.footer__nav-link:hover::before {
  opacity: 1;
}

/* ========================================
   2.6 响应式布局
   ======================================== */

/* 移动端样式 (默认) */
@media (max-width: 767px) {
  .header {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .header__title {
    font-size: 1.8rem;
    letter-spacing: 4px;
  }

  .header__subtitle {
    font-size: 0.9rem;
    letter-spacing: 2px;
  }

  .tabs {
    gap: 8px;
    padding: var(--spacing-sm);
  }

  .tabs__item {
    padding: 10px 16px;
    font-size: 0.85rem;
    flex: 1 1 calc(50% - 8px);
    min-width: 0;
    letter-spacing: 1px;
    clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
  }

  .content {
    padding: var(--spacing-md) var(--spacing-xs);
  }

  .content__image {
    width: 100%;
    border-radius: 2px;
  }
}

/* 平板及以上 */
@media (min-width: 768px) {
  .header {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .header__title {
    font-size: 2.5rem;
    letter-spacing: 6px;
  }

  .header__subtitle {
    font-size: 1rem;
  }

  .tabs {
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
  }

  .tabs__item {
    padding: 14px 32px;
    font-size: 1rem;
  }

  .content {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .content__image {
    max-width: 85%;
  }
}

/* 桌面端 */
@media (min-width: 1024px) {
  .header__title {
    font-size: 3.5rem;
    letter-spacing: 10px;
  }

  .header__subtitle {
    font-size: 1.2rem;
    letter-spacing: 6px;
  }

  .content__panel {
    max-width: 900px;
  }

  .content__image {
    max-width: 100%;
  }
}

/* ========================================
   服务须知页面特定样式
   ======================================== */

/* 服务须知页面导航 */
.service-terms__nav {
  margin-top: var(--spacing-md);
  display: flex;
  justify-content: center;
}

.service-terms__nav-link {
  padding: 12px 28px;
  font-size: 1rem;
  font-family: var(--font-family-cn);
  font-weight: 600;
  color: var(--color-text-primary);
  background: linear-gradient(135deg, var(--color-neon-cyan), var(--color-neon-blue));
  border: 2px solid var(--color-neon-cyan);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  text-transform: uppercase;
  letter-spacing: 2px;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  display: inline-block;
}

.service-terms__nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(5, 217, 232, 0.2), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.service-terms__nav-link:hover {
  color: var(--color-text-primary);
  border-color: var(--color-neon-pink);
  background: linear-gradient(135deg, var(--color-neon-pink), var(--color-neon-purple));
  box-shadow:
    0 0 20px rgba(255, 42, 109, 0.6),
    0 0 40px rgba(255, 42, 109, 0.3);
}

.service-terms__nav-link:hover::before {
  opacity: 1;
}

/* 服务须知内容区域 */
.service-terms__content {
  flex: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
  width: 100%;
}

.service-terms__section {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid rgba(5, 217, 232, 0.3);
  border-radius: 4px;
  box-shadow: 0 0 20px rgba(5, 217, 232, 0.1);
  position: relative;
}

.service-terms__section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-neon-cyan), var(--color-neon-pink));
}

.service-terms__section-title {
  font-family: var(--font-family);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-neon-cyan);
  margin-bottom: var(--spacing-md);
  letter-spacing: 3px;
  text-shadow: 0 0 10px var(--color-neon-cyan);
}

.service-terms__text {
  color: var(--color-text-primary);
  line-height: 1.8;
  font-size: 1rem;
}

.service-terms__text p {
  margin-bottom: var(--spacing-sm);
}

.service-terms__text p:last-child {
  margin-bottom: 0;
}

.service-terms__list {
  list-style: none;
  padding-left: 0;
  color: var(--color-text-primary);
  line-height: 1.8;
}

.service-terms__list li {
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-md);
  position: relative;
}

.service-terms__list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-neon-pink);
  font-weight: bold;
}

/* 响应式样式 */
@media (max-width: 767px) {
  .service-terms__nav-link {
    padding: 10px 20px;
    font-size: 0.9rem;
    letter-spacing: 1px;
    clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
  }

  .service-terms__content {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .service-terms__section {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
  }

  .service-terms__section-title {
    font-size: 1.4rem;
    letter-spacing: 2px;
  }

  .service-terms__text {
    font-size: 0.95rem;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .service-terms__content {
    max-width: 750px;
  }

  .service-terms__section-title {
    font-size: 1.6rem;
  }
}

/* 服务须知页面子标题样式 */
.service-terms__subsection-title {
  font-family: var(--font-family);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-neon-pink);
  margin: var(--spacing-md) 0 var(--spacing-sm) 0;
  letter-spacing: 2px;
  text-shadow: 0 0 5px var(--color-neon-pink);
}

.service-terms__article {
  width: 100%;
}

.service-terms__contact-info {
  background: var(--color-bg-tertiary);
  padding: var(--spacing-md);
  border-radius: 4px;
  border-left: 4px solid var(--color-neon-cyan);
  margin: var(--spacing-sm) 0;
}

.service-terms__contact-link {
  color: var(--color-neon-cyan);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.service-terms__contact-link:hover {
  color: var(--color-neon-pink);
  text-shadow: 0 0 5px var(--color-neon-pink);
}

/* 响应式调整 */
@media (max-width: 767px) {
  .service-terms__subsection-title {
    font-size: 1.1rem;
    letter-spacing: 1px;
  }

  .service-terms__contact-info {
    padding: var(--spacing-sm);
  }
}