/* ===========================================
   开云体育网页版 - Kaiyun Design System
   温暖珊瑚 · 奶油极简 · 玻璃态
   =========================================== */

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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  overflow-x: hidden;
  background: #FAF7F2;
  color: #3D2C2A;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- 全局光晕装饰 --- */
body::before {
  content: '';
  position: fixed;
  top: -180px;
  right: -120px;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, rgba(232,120,74,0.10) 0%, rgba(244,162,97,0.06) 35%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  animation: floatGlow 18s ease-in-out infinite;
}

body::after {
  content: '';
  position: fixed;
  bottom: -200px;
  left: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139,168,136,0.09) 0%, rgba(139,168,136,0.03) 40%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  animation: floatGlow 22s ease-in-out infinite reverse;
}

@keyframes floatGlow {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 15px) scale(0.96); }
}

/* --- 核心布局 --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

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

.section:nth-child(even) {
  background: #F5F0EA;
}

/* --- 导航 --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(250,247,242,0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(61,44,42,0.08);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 2px 24px rgba(61,44,42,0.06);
}

.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: 800;
  font-size: 1.25rem;
  text-decoration: none;
  color: #3D2C2A;
  letter-spacing: -0.3px;
  transition: opacity 0.2s;
}

.logo:hover {
  opacity: 0.78;
}

.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, #E8784A 0%, #F4A261 60%, #F7C59F 100%);
  color: #fff;
  font-weight: 800;
  box-shadow: 0 3px 12px rgba(232,120,74,0.28);
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 520;
  color: #5C4845;
  transition: color 0.22s, transform 0.15s;
  position: relative;
  letter-spacing: 0.15px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #E8784A;
  border-radius: 1px;
  transition: width 0.28s ease;
}

.main-nav a:hover {
  color: #E8784A;
}

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

.nav-cta {
  padding: 9px 22px;
  border-radius: 22px;
  color: #fff !important;
  font-weight: 660 !important;
  background: linear-gradient(135deg, #E8784A 0%, #F4A261 100%);
  box-shadow: 0 3px 14px rgba(232,120,74,0.30);
  transition: box-shadow 0.25s, transform 0.2s !important;
  letter-spacing: 0.2px;
}

.nav-cta:hover {
  box-shadow: 0 6px 22px rgba(232,120,74,0.40);
  transform: translateY(-1px);
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
  width: 36px;
  height: 28px;
  justify-content: center;
}

.menu-toggle span {
  display: block;
  width: 26px;
  height: 2.2px;
  background: #3D2C2A;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* --- Hero --- */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -80px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(244,162,97,0.14) 0%, rgba(232,120,74,0.07) 40%, transparent 68%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 680;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 18px;
  background: rgba(232,120,74,0.10);
  color: #C55D35;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.18;
  margin-bottom: 22px;
  font-weight: 820;
  letter-spacing: -0.8px;
  color: #2B1D1A;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #E8784A 0%, #F4A261 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.12rem;
  opacity: 0.72;
  max-width: 560px;
  margin-bottom: 34px;
  color: #5C4845;
  line-height: 1.6;
  font-weight: 420;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(61,44,42,0.10), 0 0 0 1px rgba(61,44,42,0.04);
  background: #EDE6E0;
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 24px;
  font-weight: 640;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.26s ease;
  font-size: 0.95rem;
  letter-spacing: 0.2px;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #E8784A 0%, #F4A261 100%);
  box-shadow: 0 4px 18px rgba(232,120,74,0.32);
}

.btn-primary:hover {
  box-shadow: 0 8px 28px rgba(232,120,74,0.44);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(232,120,74,0.28);
}

.btn-outline {
  background: transparent;
  border: 1.8px solid #D4C5BB;
  color: #3D2C2A;
}

.btn-outline:hover {
  border-color: #E8784A;
  color: #E8784A;
  background: rgba(232,120,74,0.04);
  transform: translateY(-2px);
}

/* --- 标签/标题 --- */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 680;
  letter-spacing: 2.4px;
  margin-bottom: 14px;
  color: #C55D35;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
  font-weight: 780;
  letter-spacing: -0.5px;
  color: #2B1D1A;
  line-height: 1.22;
}

.section-desc {
  max-width: 600px;
  opacity: 0.68;
  margin-bottom: 42px;
  color: #5C4845;
  font-size: 1.02rem;
  line-height: 1.6;
}

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

.category-card {
  border-radius: 14px;
  padding: 30px 26px;
  border: 1px solid rgba(61,44,42,0.07);
  transition: all 0.30s ease;
  background: rgba(255,255,255,0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  position: relative;
  cursor: pointer;
}

.category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(232,120,74,0.04) 0%, rgba(244,162,97,0.02) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(61,44,42,0.09), 0 0 0 1px rgba(232,120,74,0.12);
  border-color: rgba(232,120,74,0.18);
}

.category-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, rgba(232,120,74,0.12) 0%, rgba(244,162,97,0.08) 100%);
  color: #E8784A;
  transition: transform 0.3s ease;
}

.category-card:hover .card-icon {
  transform: scale(1.06);
}

.card-link {
  font-weight: 640;
  font-size: 0.88rem;
  text-decoration: none;
  color: #E8784A;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.25s ease;
}

.card-link:hover {
  gap: 10px;
}

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

.feature-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(61,44,42,0.08), 0 0 0 1px rgba(61,44,42,0.04);
  background: #EDE6E0;
}

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

.feature-text {
  position: relative;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  padding: 7px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.96rem;
  color: #4A3B38;
  line-height: 1.5;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #E8784A;
  font-size: 0.9rem;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(232,120,74,0.10);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- 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: 14px;
  border: 1px solid rgba(61,44,42,0.06);
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(61,44,42,0.07);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 840;
  background: linear-gradient(135deg, #E8784A 0%, #F4A261 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.58;
  margin-top: 8px;
  color: #5C4845;
  font-weight: 480;
}

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

.content-wall-item {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(61,44,42,0.07);
  transition: all 0.30s ease;
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.content-wall-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 14px 34px rgba(61,44,42,0.10), 0 0 0 1px rgba(232,120,74,0.10);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  background: #E8DFD6;
}

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

.content-wall-body h3 {
  font-weight: 680;
  margin-bottom: 6px;
  color: #2B1D1A;
  font-size: 1.05rem;
}

.content-wall-body p {
  font-size: 0.9rem;
  color: #5C4845;
  opacity: 0.7;
  line-height: 1.5;
}

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

.faq-item {
  border: 1px solid rgba(61,44,42,0.08);
  border-radius: 12px;
  margin-bottom: 8px;
  overflow: hidden;
  cursor: pointer;
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: border-color 0.25s, box-shadow 0.25s;
}

.faq-item:hover {
  border-color: rgba(232,120,74,0.16);
  box-shadow: 0 2px 12px rgba(61,44,42,0.04);
}

.faq-item .faq-question {
  padding: 17px 22px;
  font-weight: 640;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #2B1D1A;
  font-size: 0.98rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 500;
  color: #E8784A;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.7;
  color: #5C4845;
  font-size: 0.93rem;
  line-height: 1.6;
}

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

.faq-item.open {
  border-color: rgba(232,120,74,0.20);
}

/* --- CTA横幅 --- */
.cta-banner {
  padding: 60px 28px;
  text-align: center;
  border-radius: 18px;
  color: #fff;
  background: linear-gradient(135deg, #E8784A 0%, #D0653A 30%, #F4A261 70%, #F7C59F 100%);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -40px;
  width: 260px;
  height: 260px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -30px;
  width: 200px;
  height: 200px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  position: relative;
  z-index: 1;
  font-weight: 780;
  font-size: 2rem;
  letter-spacing: -0.4px;
}

.cta-banner p {
  position: relative;
  z-index: 1;
  opacity: 0.9;
  margin: 10px 0 24px;
  font-size: 1rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #E8784A;
  box-shadow: 0 5px 20px rgba(0,0,0,0.15);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  box-shadow: 0 8px 28px rgba(0,0,0,0.22);
}

/* --- 页脚 --- */
.site-footer {
  padding: 60px 0 28px;
  background: #F0EBE4;
  border-top: 1px solid rgba(61,44,42,0.06);
  position: relative;
  z-index: 1;
}

.site-footer .container {
  position: relative;
}

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

.footer-brand {
  color: #3D2C2A;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  opacity: 0.65;
  line-height: 1.6;
  color: #5C4845;
}

.footer-col h4 {
  font-weight: 680;
  margin-bottom: 14px;
  font-size: 0.95rem;
  color: #2B1D1A;
  letter-spacing: 0.3px;
}

.footer-col a {
  display: block;
  text-decoration: none;
  color: #5C4845;
  font-size: 0.88rem;
  padding: 4px 0;
  opacity: 0.7;
  transition: opacity 0.2s, color 0.2s;
}

.footer-col a:hover {
  opacity: 1;
  color: #E8784A;
}

.footer-bottom {
  border-top: 1px solid rgba(61,44,42,0.08);
  margin-top: 44px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.85rem;
  color: #8A7B76;
  opacity: 0.75;
}

/* --- 工具类 --- */
.text-accent {
  color: #E8784A;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.68;
  color: #5C4845;
  line-height: 1.6;
  font-size: 0.95rem;
}

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

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

/* --- 图片占位 --- */
.hero-image,
.feature-image {
  background: linear-gradient(135deg, #EDE6E0 0%, #E8DFD6 40%, #F5F0EA 100%);
  min-height: 200px;
}

.content-wall-item img {
  background: linear-gradient(135deg, #EDE6E0 0%, #E8DFD6 100%);
}

/* --- 响应式 --- */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.4rem;
  }
  .section-title {
    font-size: 1.8rem;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 28px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
  .main-nav {
    display: none;
  }
  .menu-toggle {
    display: flex;
    flex-direction: column;
  }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(250,247,242,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid rgba(61,44,42,0.06);
    box-shadow: 0 10px 30px rgba(61,44,42,0.06);
  }
  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .section {
    padding: 50px 0;
  }
  .section-title {
    font-size: 1.5rem;
  }
  .cta-banner {
    padding: 40px 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;
    gap: 10px;
  }
  .hero h1 {
    font-size: 1.7rem;
  }
  .btn {
    width: 100%;
    justify-content: center;
  }
  .header-inner {
    padding: 0 14px;
  }
  .container {
    padding: 0 16px;
  }
  .category-card {
    padding: 22px 18px;
  }
  .stat-number {
    font-size: 1.9rem;
  }
  .feature-block {
    gap: 20px;
  }
  .section-title {
    font-size: 1.35rem;
  }
}