/* ===== MK体育在线官网 - 全站公共样式 ===== */
/* 配色方案：M焦糖棕系列 */

:root {
  --primary: #E8D5C0;
  --secondary: #8B5E3C;
  --dark-bg: #2C1F15;
  --dark-secondary: #3D2B1F;
  --text-main: #3D2B1F;
  --text-light: #F5EDE4;
  --text-muted: #8B7355;
  --border-color: #D4C4B0;
  --white: #FFFFFF;
  --light-bg: #FDF8F3;
  --card-bg: #FAF5EF;
  --accent: #A67B5B;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-style: italic;
  color: var(--text-main);
  background-color: var(--light-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--accent);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== N4 居中导航 ===== */
.site-header {
  background: var(--dark-bg);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(44, 31, 21, 0.3);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

.logo {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo svg {
  width: 40px;
  height: 40px;
}

.logo-text {
  color: var(--primary);
  font-size: 22px;
  font-weight: 700;
  font-style: italic;
  letter-spacing: 1px;
}

.logo-sub {
  color: var(--accent);
  font-size: 11px;
  font-style: italic;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  list-style: none;
  gap: 0;
}

.main-nav li {
  position: relative;
}

.main-nav a {
  display: block;
  padding: 20px 18px;
  color: var(--primary);
  font-size: 14px;
  font-style: italic;
  font-weight: 500;
  letter-spacing: 1px;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--white);
  background: var(--secondary);
}

/* ===== B3 胶囊按钮 ===== */
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 50px;
  font-size: 14px;
  font-style: italic;
  font-weight: 600;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-align: center;
}

.btn-primary {
  background: var(--secondary);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--accent);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(139, 94, 60, 0.3);
}

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

.btn-outline:hover {
  background: var(--secondary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-light {
  background: var(--primary);
  color: var(--dark-bg);
}

.btn-light:hover {
  background: var(--white);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark-bg);
  color: var(--primary);
  padding: 50px 0 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .logo {
  position: static;
  transform: none;
  margin-bottom: 20px;
}

.footer-brand p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-muted);
  font-style: italic;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 20px;
  letter-spacing: 1px;
  font-style: italic;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 13px;
  font-style: italic;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-contact p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-style: italic;
}

.footer-bottom {
  border-top: 1px solid var(--dark-secondary);
  margin-top: 40px;
  padding: 20px;
  text-align: center;
}

.footer-bottom p {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
}

.footer-bottom a {
  color: var(--accent);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  background: var(--dark-secondary);
  padding: 15px 0;
}

.breadcrumb-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.breadcrumb a {
  color: var(--primary);
  font-size: 13px;
  font-style: italic;
}

.breadcrumb span {
  color: var(--text-muted);
  font-size: 13px;
  margin: 0 8px;
}

.breadcrumb .current {
  color: var(--accent);
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 40px 0;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  display: block;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-style: italic;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  transition: all 0.3s;
}

.pagination a:hover {
  background: var(--secondary);
  color: var(--white);
  border-color: var(--secondary);
}

.pagination .current {
  background: var(--secondary);
  color: var(--white);
  border-color: var(--secondary);
}

/* ===== 通用容器 ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark-bg);
  font-style: italic;
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--secondary);
  margin: 15px auto 0;
  border-radius: 2px;
}

.section-header p {
  font-size: 15px;
  color: var(--text-muted);
  font-style: italic;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== 回到顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--secondary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 999;
  font-size: 18px;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--accent);
  transform: translateY(-3px);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    padding: 10px;
  }

  .logo {
    position: static;
    transform: none;
    margin-bottom: 10px;
  }

  .main-nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .main-nav a {
    padding: 10px 12px;
    font-size: 12px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .section-header h2 {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  .main-nav a {
    padding: 8px 10px;
    font-size: 11px;
  }

  .btn {
    padding: 10px 24px;
    font-size: 13px;
  }
}