/* ===== 杏彩体育 - style.css ===== */
/* ===== 全局重置 & 变量 ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --brand: #1a2b4c;
  --brand-light: #2d4373;
  --accent: #f0b429;
  --accent-soft: #f5c842;
  --accent-glow: rgba(240, 180, 41, 0.3);
  --bg: #f8f9fc;
  --card-bg: #ffffff;
  --text: #1f2937;
  --text-light: #6b7280;
  --glass: rgba(255, 255, 255, 0.12);
  --glass-strong: rgba(255, 255, 255, 0.2);
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 20px 48px rgba(0, 0, 0, 0.12);
  --radius: 24px;
  --radius-sm: 12px;
  --radius-full: 60px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body.dark {
  --bg: #0a0e1a;
  --card-bg: #141b2b;
  --text: #e5e7eb;
  --text-light: #9ca3af;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  --shadow-hover: 0 20px 48px rgba(0, 0, 0, 0.7);
  --glass: rgba(255, 255, 255, 0.06);
  --glass-strong: rgba(255, 255, 255, 0.1);
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== 容器 ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-soft);
}

/* ===== 选择 ===== */
::selection {
  background: var(--accent);
  color: #0a0e1a;
}
body.dark ::selection {
  background: var(--accent);
  color: #0a0e1a;
}

/* ===== 头部 ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition);
}
body.dark .header {
  background: rgba(10, 14, 26, 0.9);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

/* Logo */
.logo svg {
  height: 38px;
  width: auto;
  display: block;
  transition: transform 0.3s ease;
}
.logo:hover svg {
  transform: scale(1.05);
}

/* 导航 */
.nav {
  display: flex;
  gap: 6px;
}
.nav a {
  padding: 8px 16px;
  border-radius: 40px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: all var(--transition);
  position: relative;
}
.nav a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: transform var(--transition);
}
.nav a:hover::after,
.nav a.active::after {
  transform: translateX(-50%) scaleX(1);
}
.nav a:hover,
.nav a.active {
  background: var(--glass);
  color: #fff;
}
.nav a.active {
  background: rgba(240, 180, 41, 0.2);
  color: var(--accent);
}

/* 头部操作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.theme-toggle {
  background: var(--glass);
  border: none;
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}
.theme-toggle:hover {
  background: var(--glass-strong);
  transform: rotate(15deg);
}
.menu-toggle {
  display: none;
  background: var(--glass);
  border: none;
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.menu-toggle:hover {
  background: var(--glass-strong);
}

/* ===== 移动端导航 ===== */
.mobile-nav {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  width: 100%;
  height: calc(100vh - 70px);
  background: rgba(10, 14, 26, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  flex-direction: column;
  padding: 24px;
  gap: 8px;
  z-index: 99;
  overflow-y: auto;
  animation: slideIn 0.3s ease;
}
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.mobile-nav.open {
  display: flex;
}
.mobile-nav a {
  padding: 14px 20px;
  border-radius: 40px;
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition);
}
.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--accent);
  background: rgba(240, 180, 41, 0.1);
  padding-left: 28px;
}

/* ===== Hero 区域 ===== */
.hero {
  padding: 60px 0 80px;
  position: relative;
  background: linear-gradient(135deg, #0a0e1a 0%, #1a2b4c 70%, #2d4373 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(240, 180, 41, 0.06) 0%, transparent 50%),
              radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.03) 0%, transparent 40%);
  animation: heroGlow 10s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes heroGlow {
  0% {
    transform: translate(0, 0) scale(1);
  }
  100% {
    transform: translate(5%, 5%) scale(1.1);
  }
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(240, 180, 41, 0.08) 0%, transparent 60%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
  animation: fadeInUp 0.8s ease;
}
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.hero h1 span {
  color: var(--accent);
  text-shadow: 0 0 40px rgba(240, 180, 41, 0.3);
}
.hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.btn:hover::after {
  opacity: 1;
}
.btn-primary {
  background: var(--accent);
  color: #0a0e1a;
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-primary:hover {
  background: var(--accent-soft);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(240, 180, 41, 0.4);
}
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent);
  transform: translateY(-3px);
}

/* Hero 卡片 */
.hero-visual {
  display: flex;
  justify-content: center;
  animation: fadeInUp 0.8s ease 0.2s both;
}
.hero-card {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius);
  padding: 32px 28px;
  width: 100%;
  max-width: 460px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  transition: transform var(--transition), box-shadow var(--transition);
}
.hero-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}
.hero-card .stat {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.8);
  transition: background var(--transition);
}
.hero-card .stat:hover {
  background: rgba(255, 255, 255, 0.03);
  padding-left: 8px;
  padding-right: 8px;
  border-radius: 8px;
}
.hero-card .stat strong {
  color: #fff;
  font-size: 1.2rem;
}

/* ===== 通用区块 ===== */
section {
  padding: 80px 0;
}
.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.section-sub {
  color: var(--text-light);
  max-width: 720px;
  margin-bottom: 48px;
  font-size: 1.1rem;
  line-height: 1.7;
}

/* ===== 网格系统 ===== */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

/* ===== 卡片 ===== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.04);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-soft));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.card:hover::before {
  transform: scaleX(1);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.card-icon {
  width: 52px;
  height: 52px;
  background: rgba(240, 180, 41, 0.12);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.6rem;
  transition: transform var(--transition), background var(--transition);
}
.card:hover .card-icon {
  transform: scale(1.1) rotate(-5deg);
  background: rgba(240, 180, 41, 0.2);
}
.card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  font-weight: 600;
}
.card p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== 徽章 ===== */
.badge {
  display: inline-block;
  background: rgba(240, 180, 41, 0.15);
  color: var(--accent);
  padding: 4px 14px;
  border-radius: 40px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* ===== 时间线 ===== */
.timeline-item {
  display: flex;
  gap: 20px;
  margin-bottom: 28px;
  padding: 12px 16px;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: background var(--transition);
}
.timeline-item:hover {
  background: rgba(240, 180, 41, 0.05);
}
.timeline-year {
  min-width: 80px;
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
}

/* ===== Footer ===== */
.footer {
  background: #0a0e1a;
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
}
.footer a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  font-size: 0.9rem;
  display: block;
  margin-bottom: 8px;
  transition: all var(--transition);
  padding: 2px 0;
}
.footer a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 40px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
}

/* ===== FAQ ===== */
.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px 0;
  cursor: pointer;
  transition: background var(--transition);
  border-radius: 8px;
}
.faq-item:hover {
  background: rgba(240, 180, 41, 0.03);
  padding-left: 8px;
  padding-right: 8px;
}
.faq-question {
  display: flex;
  justify-content: space-between;
  font-weight: 600;
  font-size: 1.1rem;
  align-items: center;
}
.faq-question span {
  transition: transform var(--transition);
  font-size: 0.9rem;
}
.faq-item.open .faq-question span {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding var(--transition);
  color: var(--text-light);
  padding-top: 0;
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding-top: 8px;
}

/* ===== HowTo ===== */
.howto-step {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  align-items: flex-start;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.howto-step:hover {
  background: rgba(240, 180, 41, 0.04);
}
.howto-num {
  background: var(--accent);
  color: #0a0e1a;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.howto-step:hover .howto-num {
  transform: scale(1.1);
}

/* ===== 文章卡片 ===== */
.article-card {
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition);
  border-radius: 8px;
}
.article-card:hover {
  padding-left: 16px;
  padding-right: 16px;
  background: rgba(240, 180, 41, 0.02);
}
.article-card h4 {
  font-size: 1.2rem;
  margin-bottom: 6px;
  font-weight: 600;
}
.article-card .meta {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 8px;
}
.article-card p {
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 8px;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-light);
  padding: 16px 0;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
.breadcrumb a:hover {
  color: var(--accent-soft);
  text-decoration: underline;
}

/* ===== 滚动动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 数字动画 ===== */
.count-num {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  display: inline-block;
}

/* ===== 返回顶部按钮 ===== */
#backToTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #0a0e1a;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 999;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  display: none;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
#backToTop:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 6px 24px rgba(240, 180, 41, 0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero h1 {
    font-size: 2.6rem;
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .section-title {
    font-size: 1.8rem;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero {
    padding: 40px 0 60px;
  }
  section {
    padding: 60px 0;
  }
  .hero-card {
    padding: 24px 20px;
  }
  .btn {
    padding: 12px 24px;
    font-size: 0.95rem;
  }
  .timeline-item {
    flex-direction: column;
    gap: 8px;
  }
  .timeline-year {
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .hero h1 {
    font-size: 1.6rem;
  }
  .section-title {
    font-size: 1.5rem;
  }
  .header-inner {
    height: 60px;
  }
  .logo svg {
    height: 30px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .btn {
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .grid-2,
  .grid-3,
  .grid-4 {
    gap: 20px;
  }
  .card {
    padding: 20px;
  }
}

/* ===== 暗色模式适配 ===== */
body.dark .card {
  border-color: rgba(255, 255, 255, 0.06);
}
body.dark .hero-card {
  border-color: rgba(255, 255, 255, 0.08);
}
body.dark .faq-item {
  border-color: rgba(255, 255, 255, 0.06);
}
body.dark .article-card {
  border-color: rgba(255, 255, 255, 0.06);
}

/* ===== 辅助类 ===== */
.text-center {
  text-align: center;
}
.text-accent {
  color: var(--accent);
}
.mt-4 {
  margin-top: 16px;
}
.mt-8 {
  margin-top: 32px;
}
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.gap-4 {
  gap: 16px;
}
.gap-6 {
  gap: 24px;
}

/* ===== 打印样式 ===== */
@media print {
  .header,
  .footer,
  #backToTop,
  .theme-toggle,
  .menu-toggle,
  .mobile-nav {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}