:root { --header-offset: 122px; --primary-color: #2F6BFF; --accent-color: #6FA3FF; --card-bg: #FFFFFF; --bg-color: #F4F7FB; --text-main: #1F2D3D; --text-black: #000000; --border-color: #D6E2FF; --glow-color: #A5C4FF; }

body { margin: 0; font-family: Arial, sans-serif; line-height: 1.6; color: var(--text-main); background-color: var(--bg-color); padding-top: var(--header-offset); overflow-x: hidden; }

/* Header */
.site-header { position: fixed; top: 0; left: 0; right: 0; width: 100%; z-index: 1000; background-color: var(--bg-color); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1); box-sizing: border-box; }

.header-top { box-sizing: border-box; min-height: 68px; height: 68px; display: flex; align-items: center; overflow: hidden; background-color: var(--primary-color); width: 100%; color: #FFFFFF; }
.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 40px; }
.logo { font-size: 28px; font-weight: bold; color: #FFFFFF; text-decoration: none; display: block; }
.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(--accent-color); padding: 0 40px; }

.main-nav { box-sizing: border-box; min-height: 52px; height: 52px; display: flex; align-items: center; overflow: hidden; background-color: var(--bg-color); width: 100%; border-top: 1px solid var(--border-color); }
.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 40px; position: relative; }
.nav-list { list-style: none; margin: 0; padding: 0; display: flex; gap: 25px; }
.nav-list li a { color: var(--text-main); text-decoration: none; font-weight: bold; font-size: 15px; padding: 5px 0; transition: color 0.3s ease; white-space: nowrap; }
.nav-list li a:hover { color: var(--primary-color); }

.btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; border-radius: 25px; text-decoration: none; font-weight: bold; color: #FFFFFF; background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%); transition: transform 0.2s ease, box-shadow 0.2s ease; white-space: nowrap; border: none; cursor: pointer; min-width: 80px; text-align: center; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 4px 10px rgba(var(--primary-color), 0.3); }

.hamburger-menu { display: none; background: none; border: none; cursor: pointer; padding: 10px; z-index: 1001; position: absolute; left: 15px; top: 50%; transform: translateY(-50%); }
.hamburger-menu .bar { display: block; width: 25px; height: 3px; background-color: #FFFFFF; margin: 5px auto; transition: all 0.3s ease; }
.hamburger-menu.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger-menu.active .bar:nth-child(2) { opacity: 0; }
.hamburger-menu.active .bar:nth-child(3) { transform: translateY(-8px) 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: 998; }
.overlay.active { display: block; }

/* Footer */
.site-footer { background-color: var(--bg-color); padding: 50px 0 20px; color: var(--text-main); text-align: center; font-size: 14px; border-top: 1px solid var(--border-color); }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; max-width: 1200px; margin: 0 auto; padding: 0 40px; text-align: left; }
.footer-col { margin-bottom: 20px; }
.footer-col h3 { font-size: 18px; color: var(--text-black); margin-bottom: 15px; }
.footer-logo { font-size: 24px; font-weight: bold; color: var(--primary-color); text-decoration: none; margin-bottom: 15px; display: block; }
.footer-description { font-size: 13px; line-height: 1.8; color: var(--text-main); 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: var(--text-main); text-decoration: none; transition: color 0.3s ease; font-size: 13px; }
.footer-nav a:hover { color: var(--primary-color); }

.footer-bottom { border-top: 1px solid var(--border-color); padding-top: 20px; margin-top: 40px; font-size: 12px; color: var(--text-main); }
.footer-bottom p { margin: 0; }

.footer-slot-anchor-inner { min-height: 1px; }

/* Media Queries for Mobile */
@media (max-width: 768px) {
  :root { --header-offset: 110px; }

  .header-top { min-height: 60px !important; height: 60px !important; }
  .header-container { width: 100%; max-width: none; padding: 0 15px; position: relative; justify-content: flex-start; }
  .logo { flex: 1 !important; display: flex !important; justify-content: center !important; align-items: center !important; font-size: 24px; }
  .logo img { max-height: 56px !important; }
  
  .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(--accent-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 { min-height: 48px !important; height: 48px !important; background-color: var(--card-bg); position: fixed; top: var(--header-offset); left: 0; width: 100%; height: calc(100vh - var(--header-offset)); transform: translateX(-100%); transition: transform 0.3s ease-out; flex-direction: column; align-items: flex-start; justify-content: flex-start; z-index: 999; overflow-y: auto; border-top: none; }
  .main-nav.active { transform: translateX(0); display: flex; }
  .nav-container { width: 100%; max-width: none; padding: 20px 15px; height: auto; }
  .nav-list { flex-direction: column; width: 100%; gap: 15px; align-items: flex-start; }
  .nav-list li { width: 100%; }
  .nav-list li a { font-size: 16px; padding: 10px 0; display: block; color: var(--text-main); border-bottom: 1px solid var(--border-color); }
  .nav-list li:last-child a { border-bottom: none; }

  .hamburger-menu { display: block; }
  .hamburger-menu .bar { background-color: #FFFFFF; }

  .footer-grid { grid-template-columns: 1fr; padding: 0 15px; }
  .footer-col { text-align: center; }
  .footer-logo { margin-bottom: 10px; }
  .footer-nav { text-align: center; }
  .footer-nav li { display: inline-block; margin: 0 8px 8px 0; }
  .footer-nav a { font-size: 14px; }

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

.no-scroll { overflow: hidden; }
/* 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;
  }
}
/* 内容保护（系统追加，请勿删除） */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
input, textarea, select, [contenteditable="true"] {
  -webkit-user-select: text;
  -moz-user-select: text;
  user-select: text;
}