/* =============================================
   fun88娱乐注册 - 暖阳珊瑚设计系统
   独特配色：陶土暖橙 × 奶油白 × 鼠尾草绿
   ============================================= */

/* --- CSS变量 --- */
:root {
  --cream: #FEFAF6;
  --warm-bg: #F8F2EC;
  --terracotta: #D4786B;
  --terracotta-dark: #B85F52;
  --terracotta-light: #F0D5CF;
  --sage: #8B9D77;
  --sage-light: #E8EDE2;
  --amber: #C8966B;
  --amber-light: #F5E8DA;
  --text-primary: #3B2D2B;
  --text-secondary: rgba(59, 45, 43, 0.65);
  --text-tertiary: rgba(59, 45, 43, 0.45);
  --border-soft: rgba(59, 45, 43, 0.08);
  --border-medium: rgba(59, 45, 43, 0.14);
  --card-shadow: 0 2px 20px rgba(59, 45, 43, 0.06);
  --card-shadow-hover: 0 8px 32px rgba(59, 45, 43, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --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;
}

html {
  scroll-behavior: smooth;
}

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

/* 柔和背景光晕装饰 */
body::before {
  content: '';
  position: fixed;
  top: -30%;
  right: -20%;
  width: 70vw;
  height: 70vw;
  background: radial-gradient(circle, rgba(212, 120, 107, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  bottom: -25%;
  left: -15%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(139, 157, 119, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

/* --- 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: var(--warm-bg);
}

/* --- 导航 --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(254, 250, 246, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-soft);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 24px rgba(59, 45, 43, 0.08);
}

.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;
  transition: opacity var(--transition);
}

.logo:hover {
  opacity: 0.8;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: linear-gradient(135deg, var(--terracotta), #e8947f);
  color: #fff;
  font-weight: 800;
  letter-spacing: 0;
  box-shadow: 0 3px 12px rgba(212, 120, 107, 0.3);
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
  letter-spacing: 0.2px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--terracotta);
  border-radius: 1px;
  transition: width var(--transition);
}

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

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

.nav-cta {
  padding: 9px 22px;
  border-radius: 25px;
  color: #fff !important;
  font-weight: 600;
  background: linear-gradient(135deg, var(--terracotta), #e08a78);
  box-shadow: 0 3px 14px rgba(212, 120, 107, 0.35);
  transition: all var(--transition) !important;
  letter-spacing: 0.3px;
}

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

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(212, 120, 107, 0.45);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero --- */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 68px;
}

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

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 22px;
  margin-bottom: 18px;
  background: var(--terracotta-light);
  color: var(--terracotta-dark);
  letter-spacing: 0.8px;
  text-transform: uppercase;
  animation: fadeInUp 0.7s ease forwards;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.18;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.8px;
  color: var(--text-primary);
  animation: fadeInUp 0.7s ease 0.1s forwards;
  opacity: 0;
  animation-fill-mode: forwards;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--terracotta), var(--amber));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 32px;
  color: var(--text-secondary);
  line-height: 1.7;
  animation: fadeInUp 0.7s ease 0.2s forwards;
  opacity: 0;
  animation-fill-mode: forwards;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  animation: fadeInUp 0.7s ease 0.3s forwards;
  opacity: 0;
  animation-fill-mode: forwards;
}

.hero-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  z-index: 1;
  box-shadow: 0 16px 48px rgba(59, 45, 43, 0.1);
  animation: fadeInRight 0.8s ease 0.3s forwards;
  opacity: 0;
  animation-fill-mode: forwards;
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: calc(var(--radius-xl) + 4px);
  background: linear-gradient(135deg, rgba(212, 120, 107, 0.3), rgba(200, 150, 107, 0.2), rgba(139, 157, 119, 0.25));
  z-index: -1;
  filter: blur(2px);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-xl);
}

/* --- 按钮 --- */
.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;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(255,255,255,0.2) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn:hover::after {
  opacity: 1;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--terracotta), #d98674);
  box-shadow: 0 4px 18px rgba(212, 120, 107, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(212, 120, 107, 0.45);
}

.btn-outline {
  background: transparent;
  border: 1.8px solid var(--terracotta);
  color: var(--terracotta);
}

.btn-outline:hover {
  background: var(--terracotta);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 18px rgba(212, 120, 107, 0.25);
}

/* --- 标签/标题 --- */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2.5px;
  margin-bottom: 12px;
  text-transform: uppercase;
  color: var(--terracotta);
  position: relative;
  padding-left: 28px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 2px;
  background: var(--terracotta);
  border-radius: 1px;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 40px;
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 1.05rem;
}

/* --- 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: 1px solid var(--border-soft);
  transition: all var(--transition);
  background: #fff;
  position: relative;
  cursor: pointer;
}

.category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, transparent 60%, rgba(212, 120, 107, 0.03) 100%);
  pointer-events: none;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--border-medium);
}

.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: var(--terracotta-light);
  color: var(--terracotta-dark);
  transition: all var(--transition);
}

.category-card:hover .card-icon {
  background: var(--terracotta);
  color: #fff;
  transform: scale(1.05);
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.category-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--terracotta);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.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: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(59, 45, 43, 0.08);
  position: relative;
}

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

.feature-text {
  padding: 10px 0;
}

.feature-text .section-title {
  margin-bottom: 16px;
}

.feature-text p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: var(--sage);
  font-size: 1rem;
  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: 1px solid var(--border-soft);
  background: #fff;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 20%;
  width: 60%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--terracotta-light), transparent);
  border-radius: 2px;
  opacity: 0;
  transition: opacity var(--transition);
}

.stat-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
}

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

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--terracotta);
  letter-spacing: -1px;
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: var(--text-secondary);
  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: 1px solid var(--border-soft);
  transition: all var(--transition);
  background: #fff;
  cursor: pointer;
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--border-medium);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.content-wall-item:hover img {
  transform: scale(1.04);
}

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

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.content-wall-body p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.faq-item {
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: var(--border-medium);
  box-shadow: 0 2px 12px rgba(59, 45, 43, 0.04);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  user-select: none;
  color: var(--text-primary);
  font-size: 1rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--terracotta);
  transition: transform var(--transition);
  flex-shrink: 0;
}

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

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

.faq-item.open .faq-answer {
  display: block;
  animation: fadeIn 0.3s ease;
}

.faq-item.open {
  border-color: var(--terracotta-light);
  box-shadow: 0 4px 20px rgba(212, 120, 107, 0.08);
}

/* --- CTA横幅 --- */
.cta-banner {
  padding: 60px 24px;
  text-align: center;
  border-radius: var(--radius-xl);
  color: #fff;
  background: linear-gradient(135deg, var(--terracotta), #d98674, var(--amber));
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(212, 120, 107, 0.25);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(255,255,255,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
  font-size: 1.05rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--terracotta);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  background: #fff;
  color: var(--terracotta-dark);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
  transform: translateY(-2px);
}

/* --- 页脚 --- */
.site-footer {
  padding: 56px 0 28px;
  background: #F5EFE9;
  border-top: 1px solid var(--border-soft);
  position: relative;
}

.site-footer .container {
  position: relative;
  z-index: 1;
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-brand .logo {
  margin-bottom: 4px;
}

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

.footer-col h3 {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 5px 0;
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-soft);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

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

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

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

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

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

/* --- 动画关键帧 --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

@keyframes floatSoft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* --- 响应式 --- */
@media (max-width: 1024px) {
  .hero .container {
    gap: 32px;
  }

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

  .footer-grid {
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero p {
    max-width: 100%;
  }

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

  .hero-image {
    max-width: 420px;
    margin: 0 auto;
  }

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

  .feature-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .feature-image {
    order: -1;
  }

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

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

  .site-header .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(254, 250, 246, 0.98);
    padding: 20px 24px;
    gap: 6px;
    border-bottom: 1px solid var(--border-soft);
    box-shadow: 0 12px 32px rgba(59, 45, 43, 0.08);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 999;
  }

  .main-nav.open a {
    display: block;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: background var(--transition);
  }

  .main-nav.open a:hover {
    background: var(--warm-bg);
  }

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

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

  .cta-banner h2 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 48px 0;
  }

  .hero {
    min-height: 60vh;
  }

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

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

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

  .btn {
    width: 100%;
    justify-content: center;
    padding: 13px 24px;
  }

  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

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

  .footer-brand {
    text-align: center;
    align-items: center;
  }

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

  .stats-bar {
    gap: 12px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .cta-banner {
    padding: 40px 16px;
    border-radius: var(--radius-lg);
  }

  .cta-banner h2 {
    font-size: 1.4rem;
  }

  .feature-block {
    gap: 24px;
  }

  .cards-grid {
    gap: 16px;
  }

  .content-wall {
    gap: 16px;
  }
}

/* --- 大屏幕优化 --- */
@media (min-width: 1400px) {
  .hero h1 {
    font-size: 3.4rem;
  }

  .section-title {
    font-size: 2.5rem;
  }

  .hero .container {
    gap: 64px;
  }
}

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

  .hero {
    padding-top: 0;
  }

  .cta-banner {
    break-inside: avoid;
  }
}