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

/* Site Header */
.site-header { position: fixed; top: 0; left: 0; right: 0; width: 100%; z-index: 1000; background-color: var(--secondary-color); box-shadow: 0 2px 5px 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: #1A8ECF; width: 100%; }
.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 { font-size: 28px; font-weight: bold; color: var(--secondary-color); text-decoration: none; display: flex; align-items: center; height: 100%; }
.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(--primary-color); }

.btn { padding: 10px 18px; border-radius: 5px; text-decoration: none; font-weight: bold; text-align: center; white-space: nowrap; transition: all 0.3s ease; display: inline-block; cursor: pointer; border: none; }
.btn-primary { background-color: var(--login-color); color: var(--secondary-color); }
.btn-primary:hover { background-color: #c96606; }
.btn-secondary { background-color: var(--primary-color); color: var(--secondary-color); }
.btn-secondary:hover { background-color: #1e88e5; }

.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-list { list-style: none; margin: 0; padding: 0; display: flex; gap: 25px; }
.nav-list li a { color: var(--secondary-color); text-decoration: none; font-weight: bold; padding: 10px 0; display: block; transition: color 0.3s ease; white-space: nowrap; }
.nav-list li a:hover, .nav-list li a.active { color: #ffe082; }

.hamburger-menu { display: none; background: none; border: none; cursor: pointer; padding: 10px; z-index: 1001; }
.hamburger-menu .bar { display: block; width: 25px; height: 3px; background-color: var(--secondary-color); margin: 5px auto; transition: all 0.3s ease; }
.overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.5); z-index: 999; }
.overlay.active { display: block; }

/* Site Footer */
.site-footer { background-color: #222222; color: #bbbbbb; padding: 40px 20px 20px; font-size: 14px; box-sizing: border-box; }
.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; }
.footer-logo { font-size: 24px; font-weight: bold; color: var(--secondary-color); text-decoration: none; margin-bottom: 15px; display: block; }
.footer-description { margin-bottom: 15px; line-height: 1.8; 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 li a { color: #bbbbbb; text-decoration: none; transition: color 0.3s ease; }
.footer-nav li a:hover { color: var(--primary-color); }
.footer-bottom { border-top: 1px solid #333333; padding-top: 20px; text-align: center; max-width: 1200px; margin: 0 auto; }
.footer-bottom p { margin: 0; color: #999999; }

.footer-slot-anchor { display: block; height: 0; overflow: hidden; }
.footer-slot-anchor-inner { display: block; height: 0; overflow: hidden; }

/* 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%; }

  .site-header { box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1); }
  .header-top { min-height: 60px !important; height: 60px !important; padding: 0 15px; justify-content: space-between; }
  .header-container { width: 100%; max-width: none; padding: 0; 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; }

  .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: #1A8ECF;
  }
  .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: block; position: absolute; left: 0; top: 50%; transform: translateY(-50%); }
  .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); }

  .main-nav {
    display: none;
    flex-direction: column;
    position: fixed; top: 0; left: 0; width: 70%; height: 100%;
    background-color: #222222;
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    z-index: 1001;
    box-sizing: border-box;
    padding-top: var(--header-offset);
    overflow-y: auto;
  }
  .main-nav.active { display: flex; transform: translateX(0); }
  .nav-container { width: 100%; max-width: none; padding: 0 15px; height: auto; }
  .nav-list { flex-direction: column; gap: 0; width: 100%; }
  .nav-list li { border-bottom: 1px solid #333333; }
  .nav-list li:last-child { border-bottom: none; }
  .nav-list li a { padding: 15px 10px; color: var(--secondary-color); }

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