/* ===== 每日大赛 - 全新视觉系统 ===== */
/* 风格：轻奢杂志风 + 柔光渐变 + 几何装饰 */
/* 主色调：珊瑚粉 (#FF6B6B) + 深海蓝 (#2C3E50) + 香槟金 (#F7DC6F) */
/* 背景：米白 (#FFF8F0) 为主，局部浅蓝 (#E8F4FD) */

*, *::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: #FFF8F0;
  color: #2C3E50;
  line-height: 1.6;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(247, 220, 111, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(255, 107, 107, 0.06) 0%, transparent 50%);
}

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

.section { padding: 100px 0; position: relative; }
.section:nth-child(even) { background: linear-gradient(135deg, #FFF8F0 0%, #E8F4FD 100%); }

/* ===== 导航栏 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 248, 240, 0.92);
  backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid rgba(255, 107, 107, 0.15);
  box-shadow: 0 2px 30px rgba(44, 62, 80, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  text-decoration: none;
  color: #2C3E50;
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, #FF6B6B, #F7DC6F);
  color: #fff;
  box-shadow: 0 4px 12px rgba(255, 107, 107, 0.3);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: #4a5b6b;
  transition: all 0.3s ease;
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #FF6B6B, #F7DC6F);
  transition: width 0.3s ease;
}

.main-nav a:hover { color: #FF6B6B; }
.main-nav a:hover::after { width: 100%; }

.nav-cta {
  padding: 10px 24px !important;
  border-radius: 50px !important;
  color: #fff !important;
  font-weight: 600 !important;
  background: linear-gradient(135deg, #FF6B6B, #e55a5a) !important;
  box-shadow: 0 4px 15px rgba(255, 107, 107, 0.35);
  transition: all 0.3s ease !important;
}

.nav-cta::after { display: none !important; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255, 107, 107, 0.45) !important; }

.menu-toggle { display: none; }

/* ===== Hero 区域 ===== */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #FFF8F0 0%, #fce4d6 50%, #E8F4FD 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 107, 0.1), transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(247, 220, 111, 0.12), transparent 70%);
  pointer-events: none;
}

.hero-content { max-width: 680px; position: relative; z-index: 1; }

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(247, 220, 111, 0.1));
  border: 1px solid rgba(255, 107, 107, 0.2);
  color: #FF6B6B;
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #2C3E50 30%, #FF6B6B 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.7;
  max-width: 520px;
  margin-bottom: 36px;
  color: #5a6b7b;
}

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

.hero-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(44, 62, 80, 0.1);
  position: relative;
}

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s ease;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #FF6B6B, #e55a5a);
  box-shadow: 0 4px 15px rgba(255, 107, 107, 0.35);
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(255, 107, 107, 0.45); }

.btn-outline {
  background: transparent;
  border: 2px solid #2C3E50;
  color: #2C3E50;
}

.btn-outline:hover { background: #2C3E50; color: #fff; border-color: #2C3E50; }

/* ===== 标签/标题 ===== */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
  color: #FF6B6B;
  position: relative;
  padding-left: 40px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, #FF6B6B, #F7DC6F);
}

.section-title {
  font-size: 2.4rem;
  margin-bottom: 14px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #2C3E50;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 48px;
  font-size: 1.05rem;
  color: #5a6b7b;
}

/* ===== 卡片网格 ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.category-card {
  border-radius: 16px;
  padding: 32px;
  border: 1px solid rgba(44, 62, 80, 0.08);
  transition: all 0.4s ease;
  background: #fff;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #FF6B6B, #F7DC6F);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.category-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(44, 62, 80, 0.1); border-color: transparent; }
.category-card:hover::before { transform: scaleX(1); }

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(247, 220, 111, 0.1));
}

.card-link {
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  color: #FF6B6B;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s ease;
}

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

/* ===== 特性块 ===== */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.feature-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(44, 62, 80, 0.1);
}

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

.feature-text h3 { font-size: 1.8rem; margin-bottom: 16px; color: #2C3E50; }

.feature-list { list-style: none; margin-top: 20px; }

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  color: #4a5b6b;
}

.feature-list li::before {
  content: '✦';
  font-weight: 700;
  color: #F7DC6F;
  font-size: 1.2rem;
}

/* ===== 数据条 ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  text-align: center;
}

.stat-item {
  padding: 32px 24px;
  border-radius: 16px;
  border: 1px solid rgba(44, 62, 80, 0.08);
  background: #fff;
  transition: all 0.3s ease;
}

.stat-item:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(44, 62, 80, 0.08); }

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #FF6B6B, #F7DC6F);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.95rem;
  opacity: 0.6;
  margin-top: 8px;
  color: #5a6b7b;
}

/* ===== 内容墙 ===== */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(44, 62, 80, 0.08);
  transition: all 0.4s ease;
  background: #fff;
}

.content-wall-item:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(44, 62, 80, 0.1); }

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.content-wall-body {
  padding: 24px;
}

.content-wall-body h4 { font-size: 1.1rem; margin-bottom: 8px; color: #2C3E50; }
.content-wall-body p { font-size: 0.9rem; opacity: 0.7; color: #5a6b7b; }

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

.faq-item {
  border: 1px solid rgba(44, 62, 80, 0.08);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: all 0.3s ease;
}

.faq-item:hover { border-color: rgba(255, 107, 107, 0.2); }

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #2C3E50;
  font-size: 1rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: #FF6B6B;
  transition: transform 0.3s ease;
}

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

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.7;
  color: #5a6b7b;
  line-height: 1.7;
}

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

/* ===== CTA横幅 ===== */
.cta-banner {
  padding: 64px 32px;
  text-align: center;
  border-radius: 20px;
  background: linear-gradient(135deg, #FF6B6B 0%, #e55a5a 50%, #2C3E50 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(247, 220, 111, 0.15), transparent 70%);
  pointer-events: none;
}

.cta-banner h2 { color: #fff; font-size: 2.2rem; margin-bottom: 16px; position: relative; z-index: 1; }
.cta-banner p { color: rgba(255,255,255,0.8); margin-bottom: 28px; position: relative; z-index: 1; }

.cta-banner .btn-primary {
  background: #fff;
  color: #FF6B6B;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.cta-banner .btn-primary:hover { background: #F7DC6F; color: #2C3E50; }

/* ===== 页脚 ===== */
.site-footer {
  padding: 64px 0 32px;
  background: #2C3E50;
  color: rgba(255,255,255,0.8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand h3 { color: #fff; font-size: 1.2rem; margin-bottom: 12px; }
.footer-brand p { opacity: 0.6; font-size: 0.9rem; line-height: 1.7; }

.footer-col h4 { color: #F7DC6F; font-size: 0.9rem; margin-bottom: 16px; letter-spacing: 1px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 0.9rem; transition: color 0.3s ease; }
.footer-col ul li a:hover { color: #FF6B6B; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.5;
}

/* ===== 工具类 ===== */
.text-accent { color: #FF6B6B; }
.text-center { text-align: center; }
.seo-description { max-width: 600px; margin: 0 auto 48px; opacity: 0.7; color: #5a6b7b; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .feature-block { grid-template-columns: 1fr; gap: 40px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .main-nav { display: none; }
  .menu-toggle { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; cursor: pointer; background: none; border: none; font-size: 1.5rem; color: #2C3E50; }
  .main-nav.open { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; width: 100%; background: rgba(255, 248, 240, 0.98); padding: 24px; gap: 16px; border-bottom: 1px solid rgba(255, 107, 107, 0.15); }
  .hero h1 { font-size: 2.4rem; }
  .section-title { font-size: 1.8rem; }
  .hero { min-height: 60vh; }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; }
  .hero h1 { font-size: 1.8rem; }
  .section-title { font-size: 1.5rem; }
  .hero { min-height: 50vh; }
  .stat-number { font-size: 2.2rem; }
}