/* ============================================================
   竞技宝电竞 — 暖色流体电竞风 CSS设计系统
   设计理念：打破电竞冷色调刻板印象，以温暖珊瑚色+奶油白
   创造充满活力与亲和力的独特视觉体验
   ============================================================ */

:root {
  /* 暖色核心调色板 */
  --bg-primary: #FFFBF7;
  --bg-secondary: #FFF5EF;
  --bg-warm: #FFF0E8;
  --text-primary: #2D1F1F;
  --text-secondary: rgba(45, 31, 31, 0.65);
  --text-muted: rgba(45, 31, 31, 0.45);
  --coral: #FF6B6B;
  --coral-deep: #E8553D;
  --coral-light: #FFE8E4;
  --gold: #E8A850;
  --gold-light: #FDF0E0;
  --peach: #FFAB76;
  --border-warm: #F0E0D6;
  --border-light: #F5EAE2;
  --shadow-warm: rgba(180, 140, 120, 0.12);
  --shadow-hover: rgba(180, 140, 120, 0.22);
  --white: #FFFFFF;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 基础重置 ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========== 核心布局 ========== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--bg-secondary);
}

/* ========== 导航 — 固定顶部 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 251, 247, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 24px var(--shadow-warm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, #FF6B6B 0%, #FF8E7A 40%, #E8A850 100%);
  color: #fff;
  font-weight: 800;
  box-shadow: 0 3px 12px rgba(255, 107, 107, 0.3);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--transition);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--coral);
  border-radius: 2px;
  transition: width var(--transition);
}

.main-nav a:hover {
  color: var(--coral);
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 9px 22px;
  border-radius: 25px;
  color: #fff !important;
  font-weight: 600;
  font-size: 0.9rem;
  background: linear-gradient(135deg, #FF6B6B 0%, #FF7E6B 100%);
  box-shadow: 0 4px 16px rgba(255, 107, 107, 0.35);
  transition: all var(--transition);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(255, 107, 107, 0.45);
}

.nav-cta::after {
  display: none;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  width: 30px;
  height: 24px;
  justify-content: center;
  background: none;
  border: none;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2.5px;
  background: var(--text-primary);
  border-radius: 3px;
  transition: all var(--transition);
}

/* ========== 首页Hero ========== */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding-top: 68px;
  background:
    radial-gradient(ellipse at 85% 20%, rgba(255, 171, 118, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse at 15% 70%, rgba(255, 107, 107, 0.1) 0%, transparent 50%),
    var(--bg-primary);
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  width: 100%;
}

.hero-content {
  max-width: 720px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 18px;
  background: var(--coral-light);
  color: var(--coral-deep);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.6px;
  color: var(--text-primary);
  background: linear-gradient(135deg, #2D1F1F 0%, #5C3D3D 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.12rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 34px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(145deg, #FFF0E8 0%, #FFE4D6 30%, #FDE0D0 60%, #FFF5EF 100%);
  box-shadow:
    0 20px 50px var(--shadow-warm),
    0 0 0 1px var(--border-light);
  position: relative;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image::before {
  content: '';
  position: absolute;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,107,107,0.25) 0%, transparent 70%);
  top: 20%;
  left: 25%;
  animation: pulse-warm 3s ease-in-out infinite;
}

.hero-image::after {
  content: '';
  position: absolute;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,168,80,0.2) 0%, transparent 70%);
  bottom: 25%;
  right: 20%;
  animation: pulse-warm 3s ease-in-out 1.5s infinite;
}

@keyframes pulse-warm {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.25); opacity: 1; }
}

.hero-image img {
  width: 100%;
  height: auto;
  position: relative;
  z-index: 1;
}

/* ========== 按钮系统 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 28px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all var(--transition);
  font-size: 0.95rem;
  letter-spacing: 0.2px;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #FF6B6B 0%, #FF7E6B 100%);
  box-shadow: 0 6px 20px rgba(255, 107, 107, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(255, 107, 107, 0.4);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--coral);
  color: var(--coral);
}

.btn-outline:hover {
  background: var(--coral-light);
  border-color: var(--coral-deep);
  color: var(--coral-deep);
  transform: translateY(-3px);
}

/* ========== 标签/标题系统 ========== */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  margin-bottom: 12px;
  color: var(--coral);
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.25;
  color: var(--text-primary);
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 44px;
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ========== 卡片网格 ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.category-card {
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  border: 1.5px solid var(--border-light);
  transition: all var(--transition);
  background: var(--white);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--coral) 0%, var(--peach) 50%, var(--gold) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
  border-radius: 0 0 4px 4px;
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px var(--shadow-hover);
  border-color: transparent;
}

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

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, var(--coral-light) 0%, var(--gold-light) 100%);
  color: var(--coral-deep);
}

.card-link {
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--coral);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.card-link:hover {
  gap: 10px;
  color: var(--coral-deep);
}

/* ========== 特性块 ========== */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.feature-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(160deg, #FFF0E8 0%, #FFE4D6 40%, #FDE8D8 100%);
  box-shadow: 0 16px 40px var(--shadow-warm);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-image img {
  width: 100%;
  height: auto;
}

.feature-text {
  padding: 8px 0;
}

.feature-list {
  list-style: none;
  margin-top: 16px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.98rem;
  color: var(--text-primary);
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: var(--coral);
  background: var(--coral-light);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* ========== 数据条 ========== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 28px 20px;
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--border-light);
  background: var(--white);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: var(--coral);
  border-radius: 3px 3px 0 0;
  opacity: 0;
  transition: all var(--transition);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px var(--shadow-hover);
  border-color: transparent;
}

.stat-item:hover::after {
  opacity: 1;
  width: 60px;
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--coral) 0%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ========== 内容墙 ========== */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.content-wall-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1.5px solid var(--border-light);
  transition: all var(--transition);
  background: var(--white);
}

.content-wall-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 14px 36px var(--shadow-hover);
  border-color: transparent;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, #FFF0E8 0%, #FFE4D6 100%);
}

.content-wall-body {
  padding: 20px 22px;
}

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.content-wall-body p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== FAQ手风琴 ========== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: var(--white);
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: var(--coral-light);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-primary);
  font-size: 1rem;
  transition: color var(--transition);
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--coral);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-item.open .faq-question {
  color: var(--coral-deep);
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.7;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  animation: fadeSlideIn 0.3s ease;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-item.open {
  border-color: var(--coral-light);
  box-shadow: 0 6px 20px rgba(255, 107, 107, 0.08);
}

/* ========== CTA横幅 ========== */
.cta-banner {
  padding: 60px 28px;
  text-align: center;
  border-radius: var(--radius-xl);
  color: #fff;
  background: linear-gradient(145deg, #FF6B6B 0%, #FF7E6B 25%, #E8A850 70%, #F0B860 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(255, 107, 107, 0.25);
}

.cta-banner::before {
  content: '';
  position: absolute;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
  top: -60px;
  right: -40px;
}

.cta-banner::after {
  content: '';
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  bottom: -50px;
  left: -30px;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
  font-size: 1.05rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--coral-deep);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  position: relative;
  z-index: 1;
  font-weight: 700;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
  color: var(--coral);
}

/* ========== 页脚 ========== */
.site-footer {
  padding: 60px 0 28px;
  background: #FFF5EF;
  border-top: 1px solid var(--border-light);
  color: var(--text-primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .logo {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.footer-brand p {
  opacity: 0.6;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.footer-col h4 {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.footer-col a {
  display: block;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 4px 0;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--coral);
}

.footer-bottom {
  border-top: 1px solid var(--border-light);
  margin-top: 44px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ========== 工具类 ========== */
.text-accent {
  color: var(--coral);
  font-weight: 600;
}

.text-center {
  text-align: center;
}

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.mt-0 {
  margin-top: 0;
}

.mb-0 {
  margin-bottom: 0;
}

/* ========== 装饰性点缀 ========== */
.section::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,171,118,0.06) 0%, transparent 70%);
  top: 10%;
  right: -80px;
  pointer-events: none;
  z-index: 0;
}

.section:nth-child(even)::before {
  left: -80px;
  right: auto;
  background: radial-gradient(circle, rgba(255,107,107,0.05) 0%, transparent 70%);
}

.section > * {
  position: relative;
  z-index: 1;
}

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--coral-light);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--coral);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .hero-content {
    text-align: center;
    margin: 0 auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

  .hero-image {
    aspect-ratio: 16/9;
    max-width: 500px;
    margin: 0 auto;
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .feature-image {
    order: -1;
    max-width: 400px;
    margin: 0 auto;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(255, 251, 247, 0.98);
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 12px 30px var(--shadow-warm);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 999;
  }

  .main-nav.open a {
    font-size: 1rem;
    padding: 6px 0;
    width: 100%;
  }

  .main-nav.open .nav-cta {
    text-align: center;
    display: block;
    margin-top: 8px;
  }

  .cta-banner {
    padding: 44px 20px;
  }

  .cta-banner h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .hero h1 {
    font-size: 1.7rem;
  }

  .hero p {
    font-size: 0.95rem;
  }

  .section {
    padding: 44px 0;
  }

  .section-title {
    font-size: 1.45rem;
  }

  .container {
    padding: 0 16px;
  }

  .stat-item {
    padding: 20px 16px;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .category-card {
    padding: 22px 18px;
  }

  .cta-banner {
    border-radius: var(--radius-lg);
    padding: 36px 16px;
  }

  .cta-banner h2 {
    font-size: 1.3rem;
  }
}

/* ========== 打印样式 ========== */
@media print {
  .site-header {
    position: static;
  }

  .hero {
    min-height: auto;
    padding-top: 0;
  }

  .cta-banner {
    background: #f5f5f5 !important;
    color: #333 !important;
  }

  .cta-banner h2 {
    color: #333 !important;
  }
}