html { scroll-behavior: smooth; }
body { margin: 0; font-family: 'Arial', sans-serif; line-height: 1.6; color: #333333; background-color: #FFFFFF; padding-top: var(--header-offset); }
:root { --header-offset: 122px; --primary-color: #26A9E0; --secondary-color: #FFFFFF; --login-color: #EA7C07; --text-color: #000000; }

.site-header { position: fixed; top: 0; left: 0; right: 0; width: 100%; z-index: 1000; box-shadow: 0 2px 5px rgba(0,0,0,0.1); background-color: var(--secondary-color); }

.header-top { box-sizing: border-box; min-height: 68px; height: 68px; display: flex; align-items: center; overflow: hidden; background-color: #1a719c; color: var(--secondary-color); }
.header-container { box-sizing: border-box; width: 100%; height: 100%; max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 0 20px; }

.logo { display: block; font-size: 28px; font-weight: bold; color: var(--secondary-color); text-decoration: none; transition: color 0.3s ease; }
.logo:hover { color: #f0f0f0; }

.desktop-nav-buttons { display: flex; gap: 12px; align-items: center; }
.btn { display: inline-block; padding: 10px 18px; border-radius: 25px; text-decoration: none; font-weight: bold; transition: all 0.3s ease; white-space: nowrap; cursor: pointer; text-align: center; border: none; }
.btn-login { background-color: var(--login-color); color: var(--secondary-color); }
.btn-login:hover { background-color: #d66c06; transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0,0,0,0.2); }
.btn-register { background-color: var(--primary-color); color: var(--secondary-color); }
.btn-register:hover { background-color: #208cb9; transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0,0,0,0.2); }

.hamburger-menu { display: none; flex-direction: column; justify-content: space-around; width: 30px; height: 25px; cursor: pointer; padding: 5px; }
.hamburger-menu span { display: block; height: 3px; width: 100%; background-color: var(--secondary-color); border-radius: 3px; transition: all 0.3s ease; }

.main-nav { box-sizing: border-box; min-height: 52px; height: 52px; display: flex; align-items: center; overflow: hidden; background-color: var(--primary-color); width: 100%; }
.nav-container { box-sizing: border-box; height: 100%; max-width: 1200px; margin: 0 auto; display: flex; flex-direction: row; justify-content: center; align-items: center; padding: 0 20px; }
.nav-link { display: block; padding: 8px 15px; color: var(--secondary-color); text-decoration: none; font-weight: bold; transition: background-color 0.3s ease, color 0.3s ease; border-radius: 5px; white-space: nowrap; }
.nav-link:hover { background-color: rgba(255,255,255,0.2); }

.mobile-nav-buttons { box-sizing: border-box; display: none; min-height: 48px; background-color: var(--secondary-color); border-bottom: 1px solid #eee; }

.overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 998; }

/* Footer Styles */
.site-footer { background-color: #222222; color: #cccccc; padding: 40px 0 20px 0; font-size: 14px; }
.site-footer h3 { color: var(--primary-color); font-size: 18px; margin-bottom: 15px; }
.footer-top-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; max-width: 1200px; margin: 0 auto 30px auto; padding: 0 20px; }
.footer-col { padding: 10px 0; }
.footer-logo { display: block; font-size: 24px; font-weight: bold; color: var(--primary-color); text-decoration: none; margin-bottom: 15px; }
.footer-description { margin-bottom: 15px; word-wrap: break-word; overflow-wrap: break-word; line-height: 1.5; }
.footer-nav { list-style: none; padding: 0; margin: 0; }
.footer-nav li { margin-bottom: 8px; }
.footer-nav a { color: #cccccc; text-decoration: none; transition: color 0.3s ease; }
.footer-nav a:hover { color: var(--primary-color); }
.footer-bottom-nav { border-top: 1px solid #333333; padding: 20px 0; margin-top: 20px; }
.footer-bottom-nav .nav-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.footer-bottom-nav .footer-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 15px 30px; }
.footer-bottom-nav .footer-nav li { margin-bottom: 0; }
.footer-bottom { text-align: center; margin-top: 20px; padding: 0 20px; color: #999999; }
.footer-bottom p { margin: 0; }
.footer-slot-anchor-inner { min-height: 1px; }

/* Responsive Styles */
@media (max-width: 768px) {
  :root { --header-offset: 110px; }
  body { overflow-x: hidden; }
  .page-content img { max-width: 100% !important; height: auto !important; display: block; }
  .page-content { overflow-x: hidden; max-width: 100%; }

  .header-top { min-height: 60px !important; height: 60px !important; }
  .header-container { width: 100%; max-width: none; padding: 0 15px; position: relative; }
  
  .logo { flex: 1 !important; display: flex !important; justify-content: center !important; align-items: center !important; font-size: 24px; }
  .logo img { max-height: 56px !important; max-width: 100%; height: auto; }
  
  .desktop-nav-buttons { display: none !important; }
  .mobile-nav-buttons {
    display: flex !important;
    min-height: 48px;
    align-items: center;
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    justify-content: center;
    background-color: var(--secondary-color);
    border-bottom: 1px solid #eee;
  }
  .mobile-nav-buttons .btn {
    flex: 1; min-width: 0;
    max-width: calc(50% - 5px);
    box-sizing: border-box;
    padding: 8px 12px;
    font-size: 13px;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .hamburger-menu { display: flex; z-index: 1001; }
  .hamburger-menu.active span:nth-child(1) { transform: translateY(11px) rotate(45deg); }
  .hamburger-menu.active span:nth-child(2) { opacity: 0; }
  .hamburger-menu.active span:nth-child(3) { transform: translateY(-11px) rotate(-45deg); }

  .main-nav { display: none; flex-direction: column; position: fixed; top: var(--header-offset); left: 0; width: 80%; max-width: 300px; height: calc(100% - var(--header-offset)); transform: translateX(-100%); transition: transform 0.3s ease; z-index: 999; overflow-y: auto; background-color: var(--primary-color); }
  .main-nav.active { display: flex; transform: translateX(0); }
  .nav-container { flex-direction: column; padding: 20px 0; height: auto; justify-content: flex-start; align-items: flex-start; }
  .nav-link { width: 100%; padding: 12px 20px; border-bottom: 1px solid rgba(255,255,255,0.1); border-radius: 0; }
  .nav-link:last-child { border-bottom: none; }

  .overlay.active { display: block; }

  /* Footer Responsive */
  .footer-top-grid { grid-template-columns: 1fr; padding: 0 15px; }
  .footer-col { text-align: center; }
  .footer-logo { text-align: center; }
  .footer-nav { text-align: center; }
  .footer-bottom-nav .footer-nav { flex-direction: column; gap: 10px; }
  .footer-bottom { padding: 0 15px; }
}
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}