:root {
  --header-offset: 120px;
  --color-primary: #017439;
  --color-secondary: #FFFFFF;
  --color-register: #C30808;
  --color-login: #C30808;
  --color-register-text: #FFFF00;
  --color-login-text: #FFFF00;
}
body {
  padding-top: var(--header-offset);
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #FFFFFF;
}
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: #FFFFFF;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
  min-height: auto;
}
.header-top {
  background-color: #014d27;
  width: 100%;
}
.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 24px;
}
.logo {
  color: #FFFFFF;
  font-size: 24px;
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: block;
  line-height: 1.4;
}
.logo:hover {
  color: #FFFF00;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  white-space: nowrap;
}
.btn-login {
  background-color: var(--color-login);
  color: var(--color-login-text);
}
.btn-register {
  background-color: var(--color-register);
  color: var(--color-register-text);
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}
.main-nav {
  background-color: #FFFFFF;
  width: 100%;
  display: flex;
  flex-direction: row;
  position: static;
  border-bottom: 2px solid #017439;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  padding: 0 20px;
  flex-wrap: wrap;
}
.nav-link {
  color: #014d27;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  padding: 12px 16px;
  display: block;
  line-height: 1.4;
  transition: color 0.2s ease;
}
.nav-link:hover,
.nav-link.active {
  color: #C30808;
}
.hamburger-menu {
  display: none;
}
.mobile-menu-overlay {
  display: none;
}
.mobile-nav-buttons {
  display: none;
}
.site-footer {
  background-color: #014d27;
  color: #FFFFFF;
  margin-top: 60px;
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  padding: 40px 24px 24px;
  gap: 30px;
}
.footer-column {
  flex: 1;
  min-width: 220px;
}
.footer-brand {
  flex: 1.5;
}
.footer-logo {
  color: #FFFFFF;
  font-size: 22px;
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.footer-logo:hover {
  color: #FFFF00;
}
.footer-desc {
  color: #d4e8dd;
  font-size: 14px;
  line-height: 1.6;
  margin-top: 12px;
}
.footer-title {
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-nav {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-nav li {
  margin-bottom: 8px;
}
.footer-nav a {
  color: #d4e8dd;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}
.footer-nav a:hover {
  color: #FFFF00;
}
.footer-bottom {
  background-color: #003d1e;
  padding: 16px 24px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-bottom p {
  margin: 0;
  color: #d4e8dd;
  font-size: 14px;
}
@media (max-width: 768px) {
  :root {
    --header-offset: 108px;
  }
  .header-container {
    width: 100%;
    max-width: none;
    padding-left: 12px;
    padding-right: 12px;
    padding-top: 6px;
    padding-bottom: 6px;
  }
  .header-top {
    background-color: #014d27;
  }
  .logo {
    font-size: 20px;
    display: block;
  }
  .header-actions {
    gap: 8px;
  }
  .btn {
    padding: 6px 14px;
    font-size: 13px;
    display: block;
  }
  .main-nav {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 80%;
    max-width: 320px;
    height: 100%;
    background-color: #FFFFFF;
    box-shadow: 2px 0 12px rgba(0, 0, 0, 0.2);
    z-index: 1001;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    border-bottom: none;
    border-right: 2px solid #017439;
    overflow-y: auto;
  }
  .nav-container {
    width: 100%;
    max-width: none;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 0;
  }
  .nav-link {
    color: #014d27;
    padding: 14px 20px;
    border-bottom: 1px solid #e6e6e6;
    font-size: 15px;
  }
  .nav-link:hover,
  .nav-link.active {
    background-color: #f0f7f3;
    color: #C30808;
  }
  .main-nav.active {
    display: block;
    transform: translateX(0);
  }
  .hamburger-menu {
    display: none;
    position: fixed;
    top: 10px;
    left: 12px;
    width: 36px;
    height: 36px;
    background-color: #FFFFFF;
    border-radius: 4px;
    z-index: 1002;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    box-sizing: border-box;
    padding: 0 auto;
    border: none;
  }
  .hamburger-menu span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: #014d27;
    margin: 3px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .hamburger-menu.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .hamburger-menu.active span:nth-child(2) {
    opacity: 0;
  }
  .hamburger-menu.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  .mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
  }
  .mobile-menu-overlay.active {
    display: block;
  }
  .mobile-nav-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    background-color: #003d1e;
    padding: 8px 12px;
    width: 100%;
    box-sizing: border-box;
    min-height: 40px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }
  body {
    padding-top: var(--header-offset);
  }
  .site-header {
    background-color: #003d1e;
    border-bottom: none;
  }
  .site-footer {
    background-color: #014d27;
  }
  .footer-container {
    padding: 30px 16px 16px;
    gap: 20px;
  }
  .footer-column {
    flex: 1;
    min-width: 100%;
  }
  .footer-bottom {
    padding: 12px;
  }
  .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;
}