:root { --primary: #11A84E; --secondary: #22C768; --header-bg-top: #0A4B2C; --header-bg-nav: #11271B; --btn-bg: linear-gradient(180deg, #2AD16F 0%, #13994A 100%); --btn-text: #ffffff; --nav-link-color: #F2FFF6; --nav-link-hover: #F2C14E; --footer-bg: #08160F; --footer-text: #A7D9B8; --footer-title-color: #F2FFF6; --header-offset: 122px; }
body { padding-top: var(--header-offset); margin: 0; overflow-x: hidden; }
.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4); font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
.header-top { background-color: var(--header-bg-top); width: 100%; }
.header-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding-left: 24px; padding-right: 24px; min-height: 68px; }
.logo { display: block; color: #F2C14E; font-size: 30px; font-weight: 800; text-decoration: none; letter-spacing: 1px; line-height: 1.2; }
.logo:hover { color: #57E38D; }
.desktop-nav-buttons { display: flex; gap: 10px; align-items: center; }
.btn { background: var(--btn-bg); color: var(--btn-text); border: none; border-radius: 6px; padding: 10px 20px; font-size: 14px; font-weight: 700; cursor: pointer; text-decoration: none; display: inline-block; box-shadow: 0 2px 8px rgba(18, 153, 74, 0.3); transition: all 0.3s ease; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(18, 153, 74, 0.5); }
.btn-download { background: linear-gradient(180deg, #F2C14E 0%, #D69A2D 100%); color: #08160F; box-shadow: 0 2px 8px rgba(242, 193, 78, 0.3); }
.btn-download:hover { box-shadow: 0 4px 12px rgba(242, 193, 78, 0.5); }
.main-nav { background-color: var(--header-bg-nav); width: 100%; display: flex; }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; flex-direction: row; justify-content: center; align-items: center; padding: 10px 24px; gap: 4px; }
.nav-link { color: var(--nav-link-color); text-decoration: none; font-size: 15px; font-weight: 600; padding: 8px 14px; border-radius: 4px; transition: color 0.3s ease, background-color 0.3s ease; white-space: nowrap; }
.nav-link:hover { color: var(--nav-link-hover); background: rgba(87, 227, 141, 0.08); }
.mobile-nav-buttons { display: none; }
.hamburger-menu { display: none; position: fixed; top: 12px; left: 12px; width: 40px; height: 40px; background: transparent; border: 1px solid rgba(242, 255, 246, 0.3); border-radius: 8px; z-index: 1002; cursor: pointer; flex-direction: column; justify-content: center; align-items: center; gap: 5px; padding: 8px; }
.hamburger-line { display: block; width: 22px; height: 2px; background-color: #F2FFF6; transition: transform 0.3s ease, opacity 0.3s ease; }
.hamburger-menu.active .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger-menu.active .hamburger-line:nth-child(2) { opacity: 0; }
.hamburger-menu.active .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.6); z-index: 999; opacity: 0; transition: opacity 0.3s ease; }
.mobile-menu-overlay.active { opacity: 1; }
.site-footer { background-color: var(--footer-bg); color: var(--footer-text); padding-top: 48px; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; border-top: 1px solid #1E3A2A; }
.footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; padding: 0 24px 32px; }
.footer-logo { font-size: 28px; color: #F2C14E; text-decoration: none; font-weight: 800; display: inline-block; margin-bottom: 12px; }
.footer-description { font-size: 14px; line-height: 1.7; margin: 0; color: var(--footer-text); }
.footer-title { color: var(--footer-title-color); font-size: 16px; font-weight: 700; margin: 0 0 16px; text-transform: uppercase; letter-spacing: 0.5px; }
.footer-nav, .footer-legal { list-style:none; padding: 0; margin: 0; }
.footer-nav li, .footer-legal li { margin-bottom: 10px; }
.footer-link { color: var(--footer-text); text-decoration: none; font-size: 14px; transition: color 0.3s ease, padding-left 0.3s ease; }
.footer-link:hover { color: #F2C14E; padding-left: 4px; }
.footer-bottom { border-top: 1px solid #1E3A2A; padding: 20px 24px; text-align: center; }
.copyright { margin: 0; font-size: 14px; color: var(--footer-text); }
@media (max-width: 768px) {
  :root { --header-offset: 110px; }
  .page-content img { max-width: 100% !important; height: auto !important; display: block; }
  .page-content { overflow-x: hidden; max-width: 100%; }
  body { overflow-x: hidden; }
  .header-container { width: 100%; max-width: none; padding-left: 16px; padding-right: 16px; justify-content: center; min-height: 60px; }
  .nav-container { width: 100%; max-width: none; padding-left: 16px; padding-right: 16px; }
  .site-header { display: flex; flex-direction: column; }
  .logo { font-size: 24px; }
  .desktop-nav-buttons { display: none; }
  .main-nav { background-color: var(--header-bg-nav); display: none; position: fixed; top: 108px; left: 0; width: 280px; height: auto; max-height: calc(100% - 108px); flex-direction: column; align-items: stretch; padding: 8px 0; box-shadow: 2px 4px 16px rgba(0, 0, 0, 0.5); border-radius: 0 8px 8px 0; transform: translateX(-100%); transition: transform 0.3s ease, left 0.3s ease; z-index: 1001; }
  .main-nav.active { display: flex; transform: translateX(0); }
  .nav-link { padding: 12px 24px; border-bottom: 1px solid #1E3A2A; color: #F2FFF6; text-align: left; font-size: 16px; }
  .nav-link:hover { background: rgba(87, 227, 141, 0.1); color: #F2C14E; }
  .mobile-nav-buttons { display: flex; position: fixed; top: 60px; left: 0; width: 100%; background-color: #0A4B2C; z-index: 1000; justify-content: center; align-items: center; gap: 12px; padding: 8px 16px; box-sizing: border-box; border-bottom: 1px solid #1E3A2A; }
  .mobile-nav-buttons .btn { padding: 8px 16px; font-size: 13px; flex: 1; max-width: 160px; text-align: center; }
  .hamburger-menu { display: flex; }
  .mobile-menu-overlay { display: block; pointer-events: none; }
  .mobile-menu-overlay.active { display: block; pointer-events: auto; }
  .footer-container { grid-template-columns: 1fr; gap: 24px; padding: 0 20px 24px; }
  .footer-brand, .footer-nav-col, .footer-legal-col { text-align: left; }
  .footer-logo { font-size: 26px; }
  .footer-description { font-size: 13px; }
  .footer-title { font-size: 15px; margin-bottom: 12px; }
  .footer-link { font-size: 14px; }
}
@media (min-width: 769px) and (max-width: 1024px) {
  .nav-link { font-size: 14px; padding: 8px 10px; }
  .header-container { padding-left: 20px; padding-right: 20px; }
  .nav-container { padding: 10px 20px; gap: 2px; }
  .btn { padding: 8px 14px; font-size: 13px; }
}
/* 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;
}