:root { --primary: #E53935; --secondary: #FF5A4F; --header-offset: 122px; --bg-light: #F5F7FA; --card-bg: #FFFFFF; --text-main: #333333; --border-color: #E0E0E0; } * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(--bg-light); color: var(--text-main); padding-top: var(--header-offset); } a { text-decoration: none; } .site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; box-shadow: 0 4px 12px rgba(0,0,0,0.15); display: flex; flex-direction: column; background: var(--card-bg); } .header-top { background: var(--primary); width: 100%; min-height: 68px; display: flex; align-items: center; } .header-container { max-width: 1200px; width: 100%; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding-left: 30px; padding-right: 30px; min-height: 68px; } .logo { font-size: 32px; font-weight: 800; color: var(--card-bg); letter-spacing: 1px; display: inline-block; line-height: 1; } .logo:hover { color: var(--card-bg); } .desktop-nav-buttons { display: flex; gap: 10px; align-items: center; } .mobile-nav-buttons { display: none; } .btn { display: inline-block; padding: 10px 24px; border-radius: 6px; font-weight: 600; font-size: 14px; text-align: center; text-decoration: none; border: none; cursor: pointer; transition: all 0.3s ease; min-width: 100px; line-height: 1.4; } .btn-login { background: #FFFFFF; color: var(--primary); } .btn-login:hover { background: var(--bg-light); color: var(--primary); opacity: 0.9; } .btn-register { background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%); color: #FFFFFF; box-shadow: 0 4px 12px rgba(229,57,53,0.3); } .btn-register:hover { opacity: 0.85; box-shadow: 0 2px 8px rgba(229,57,53,0.2); } .main-nav { background: var(--card-bg); width: 100%; min-height: 52px; display: flex; align-items: center; border-bottom: 2px solid #ffe0e0; } .nav-container { max-width: 1200px; width: 100%; margin: 0 auto; display: flex; justify-content: center; align-items: center; padding: 8px 20px; gap: 8px; flex-wrap: nowrap; } .nav-link { padding: 8px 18px; color: var(--text-main); font-size: 15px; font-weight: 600; white-space: nowrap; border-radius: 4px; transition: all 0.3s ease; text-decoration: none; } .nav-link:hover, .nav-link.active { color: var(--primary); background: rgba(229,57,53,0.08); } .hamburger-menu { display: none; } .mobile-menu-overlay { display: none; } .site-footer { background: #242424; color: #EAEAEA; padding: 60px 0 20px; margin-top: 60px; } .footer-container { max-width: 1200px; margin: 0 auto; padding: 0 30px; display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; } .footer-logo { font-size: 28px; font-weight: 700; color: #FFFFFF; margin-bottom: 16px; display: inline-block; } .footer-desc { font-size: 14px; line-height: 1.7; color: #B0B0B0; max-width: 360px; } .footer-title { font-size: 16px; font-weight: 700; color: #FFFFFF; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 0.5px; } .footer-nav { list-style: none; padding: 0; margin: 0; } .footer-nav li { margin-bottom: 12px; } .footer-nav a { color: #B0B0B0; font-size: 14px; transition: color 0.3s ease; text-decoration: none; } .footer-nav a:hover { color: var(--secondary); padding-left: 4px; } .footer-bottom { text-align: center; border-top: 1px solid #3A3A3A; padding-top: 24px; margin-top: 40px; padding-left: 20px; padding-right: 20px; } .footer-bottom p { font-size: 14px; color: #8A8A8A; } @media (max-width: 768px) { :root { --header-offset: 146px; } body { overflow-x: hidden; } .site-header { background: var(--card-bg); } .header-top { min-height: 60px; position: relative; } .header-container { width: 100%; max-width: none; padding-left: 15px; padding-right: 15px; min-height: 60px; justify-content: center; } .logo { font-size: 26px; } .hamburger-menu { display: block; position: absolute; left: 15px; top: 50%; transform: translateY(-50%); width: 40px; height: 40px; cursor: pointer; z-index: 1001; padding: 0; background: transparent; border: none; } .hamburger-menu span { display: block; width: 24px; height: 3px; background: #FFFFFF; margin: 5px auto; transition: all 0.3s ease; border-radius: 2px; } .hamburger-menu.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); background: #FFFFFF; } .hamburger-menu.active span:nth-child(2) { opacity: 0; } .hamburger-menu.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); background: #FFFFFF; } .desktop-nav-buttons { display: none; } .mobile-nav-buttons { display: flex; justify-content: center; gap: 8px; padding: 8px 10px 8px; background: #f8433f; min-height: 48px; border-top: 1px solid rgba(255,255,255,0.15); z-index: 1000; } .mobile-nav-buttons .btn { padding: 10px 16px; min-width: 90px; font-size: 13px; } .main-nav { display: none; position: fixed; top: 108px; left: 0; width: 80%; max-width: 320px; height: calc(100% - 108px); background: var(--card-bg); flex-direction: column; justify-content: flex-start; transform: translateX(-100%); transition: transform 0.3s ease; box-shadow: 2px 0 16px rgba(0,0,0,0.2); border-bottom: none; z-index: 1000; overflow-y: auto; align-items: stretch; } .main-nav.active { display: block; transform: translateX(0); } .main-nav .nav-container { width: 100%; max-width: none; flex-direction: column; align-items: flex-start; padding: 16px; gap: 0; justify-content: flex-start; } .main-nav .nav-link { padding: 12px 16px; width: 100%; border-radius: 6px; font-size: 15px; font-weight: 600; } .main-nav .nav-link:hover, .main-nav .nav-link.active { background: rgba(229,57,53,0.08); color: var(--primary); } .mobile-menu-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.6); z-index: 999; opacity: 0; transition: opacity 0.3s ease; } .mobile-menu-overlay.active { display: block; opacity: 1; } body.no-scroll { overflow: hidden; } .footer-container {  grid-template-columns: 1fr; gap: 32px; padding: 0 20px; } .footer-links { text-align: left; } .footer-title { font-size: 15px; } .footer-nav li { margin-bottom: 10px; } .footer-logo { font-size: 24px; } .footer-desc { font-size: 13px; max-width: 100%; } .footer-bottom { padding-left: 15px; padding-right: 15px; margin-top: 20px; } .footer-bottom p { font-size: 13px; } .page-content img { max-width: 100% !important; height: auto !important; display: block; } .page-content { overflow-x: hidden; max-width: 100%; } body { overflow-x: 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;
}