:root { --header-offset: 122px; --primary-color: #E53935; --secondary-color: #FF5A4F; --text-main-color: #333333; --card-bg-color: #FFFFFF; --bg-color: #F5F7FA; --border-color: #E0E0E0; }

body { margin: 0; font-family: 'Arial', sans-serif; line-height: 1.6; color: var(--text-main-color); padding-top: var(--header-offset); overflow-x: hidden; background-color: var(--bg-color); }
body.no-scroll { overflow: hidden; }

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

.header-top { box-sizing: border-box; height: 68px; display: flex; align-items: center; overflow: hidden; background-color: var(--primary-color); width: 100%; padding: 0 20px; }
.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; }

.logo { font-size: 28px; font-weight: bold; color: var(--card-bg-color); text-decoration: none; display: block; white-space: nowrap; }
.logo img { display: block; max-height: 60px; height: auto; width: auto; max-width: 280px; object-fit: contain; }

.desktop-nav-buttons { display: flex; gap: 12px; align-items: center; }
.mobile-nav-buttons { box-sizing: border-box; display: none; min-height: 48px; background-color: var(--secondary-color); padding: 0 20px; }

.btn { display: inline-block; padding: 10px 18px; border-radius: 25px; text-decoration: none; font-weight: bold; text-align: center; white-space: nowrap; cursor: pointer; transition: all 0.3s ease; color: var(--card-bg-color); background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%); border: none; }
.btn:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); }

.main-nav { box-sizing: border-box; height: 52px; display: flex; align-items: center; overflow: hidden; background-color: var(--text-main-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 { color: var(--card-bg-color); text-decoration: none; padding: 8px 15px; margin: 0 5px; font-weight: bold; transition: color 0.3s ease, background-color 0.3s ease; white-space: nowrap; }
.nav-link:hover { background-color: rgba(255, 255, 255, 0.1); border-radius: 5px; }

.hamburger-menu { display: none; background: none; border: none; cursor: pointer; padding: 10px; z-index: 1002; position: relative; width: 40px; height: 40px; justify-content: center; align-items: center; flex-direction: column; gap: 6px; }
.hamburger-menu .bar { display: block; width: 30px; height: 3px; background-color: var(--card-bg-color); border-radius: 3px; transition: all 0.3s ease; }
.hamburger-menu.active .bar:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.hamburger-menu.active .bar:nth-child(2) { opacity: 0; }
.hamburger-menu.active .bar:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

.overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.5); z-index: 999; transition: opacity 0.3s ease; opacity: 0; }
.overlay.active { display: block; opacity: 1; }

.site-footer { background-color: #222; color: #bbb; padding: 40px 20px 20px; font-size: 14px; }
.footer-top-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; max-width: 1200px; margin: 0 auto 30px; }
.footer-col h3 { color: var(--secondary-color); font-size: 16px; margin-bottom: 15px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); padding-bottom: 8px; }
.footer-logo { font-size: 24px; font-weight: bold; color: var(--card-bg-color); text-decoration: none; display: block; margin-bottom: 15px; }
.footer-description { margin-bottom: 20px; color: #ccc; word-wrap: break-word; overflow-wrap: break-word; }
.footer-nav { list-style: none; padding: 0; margin: 0; }
.footer-nav li { margin-bottom: 8px; }
.footer-nav a { color: #bbb; text-decoration: none; transition: color 0.3s ease; }
.footer-nav a:hover { color: var(--secondary-color); }
.footer-bottom { text-align: center; margin-top: 30px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, 0.1); color: #888; }
.footer-bottom p { margin: 0; }
.footer-slot-anchor { display: block; height: 0; overflow: hidden; }
.footer-slot-anchor-inner { display: block; height: 0; overflow: hidden; }

@media (max-width: 768px) {
  :root { --header-offset: 110px; }
  body { padding-top: var(--header-offset); overflow-x: hidden; }

  .header-top { height: 60px !important; padding: 0 15px; position: relative; }
  .header-container { max-width: none; justify-content: center; 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: calc(100% - 100px); }
  .hamburger-menu { display: flex; position: absolute; left: 0; top: 50%; transform: translateY(-50%); }
  .desktop-nav-buttons { display: none !important; }
  .mobile-nav-buttons { display: flex !important; min-height: 48px; align-items: center; justify-content: center; width: 100%; max-width: 100%; box-sizing: border-box; padding: 0 15px; overflow: hidden; gap: 10px; flex-wrap: nowrap; background-color: var(--secondary-color); }
  .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; }

  .main-nav { display: none; position: fixed; top: var(--header-offset); left: 0; width: 80%; height: calc(100vh - var(--header-offset)); background-color: #333; transform: translateX(-100%); transition: transform 0.3s ease; overflow-y: auto; z-index: 1001; flex-direction: column; align-items: flex-start; padding: 20px 0; box-shadow: 2px 0 5px rgba(0, 0, 0, 0.2); }
  .main-nav.active { display: flex; transform: translateX(0); }
  .nav-container { flex-direction: column; align-items: flex-start; width: 100%; max-width: none; padding: 0; }
  .nav-link { width: 100%; padding: 12px 20px; margin: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
  .nav-link:last-child { border-bottom: none; }

  .footer-top-grid { grid-template-columns: 1fr; }
  .footer-col { margin-bottom: 20px; }
  .footer-col:last-child { margin-bottom: 0; }

  .page-content img { max-width: 100% !important; height: auto !important; display: block; }
  .page-content { overflow-x: hidden; max-width: 100%; }
}
/* 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;
  }
}