:root {
  --primary-color: #017439;
  --secondary-color: #FFFFFF;
  --btn-register-bg: #C30808;
  --btn-login-bg: #C30808;
  --btn-login-text: #FFFF00;
  --btn-register-text: #FFFF00;
  --header-offset: 122px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--secondary-color);
  padding-top: var(--header-offset);
  overflow-x: hidden;
}

/* ===== Header Styles ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--secondary-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-top {
  background-color: var(--primary-color);
  width: 100%;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 30px;
  min-height: 68px;
}

.logo {
  font-size: 28px;
  font-weight: 800;
  color: var(--secondary-color);
  text-decoration: none;
  letter-spacing: 1px;
  text-transform: uppercase;
  display: block;
  line-height: 1.2;
}

.logo:hover {
  color: #FFD700;
}

.desktop-nav-buttons {
  display: flex;
  gap: 10px;
  align-items: center;
}

.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
  text-align: center;
  min-width: 100px;
}

.btn-login {
  background-color: var(--btn-login-bg);
  color: var(--btn-login-text);
  border: 2px solid var(--btn-login-bg);
}

.btn-login:hover {
  background-color: #a00606;
  color: #FFFF00;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(195, 8, 8, 0.3);
}

.btn-register {
  background-color: var(--btn-register-bg);
  color: var(--btn-register-text);
  border: 2px solid var(--btn-register-bg);
}

.btn-register:hover {
  background-color: #a00606;
  color: #FFFF00;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(195, 8, 8, 0.3);
}

.mobile-nav-buttons {
  display: none;
}

/* Main Navigation */
.main-nav {
  background-color: #FFFFFF;
  width: 100%;
  display: flex;
  border-bottom: 3px solid var(--primary-color);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  padding: 0 20px;
  min-height: 52px;
  width: 100%;
}

.nav-link {
  color: #333333;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 16px;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--primary-color);
}

/* Hamburger Menu - Hidden on Desktop */
.hamburger-menu {
  display: none;
}

.mobile-menu-overlay {
  display: none;
}

/* ===== Footer Styles ===== */
.site-footer {
  background-color: #1a1a1a;
  color: #ffffff;
  padding: 60px 0 0;
  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-column {
  margin-bottom: 30px;
}

.footer-logo {
  font-size: 24px;
  font-weight: 800;
  color: var(--secondary-color);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: inline-block;
  margin-bottom: 15px;
}

.footer-description {
  font-size: 14px;
  line-height: 1.6;
  color: #cccccc;
  margin-top: 10px;
}

.footer-heading {
  font-size: 18px;
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-color);
  display: inline-block;
}

.footer-nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav li {
  margin-bottom: 10px;
}

.footer-nav a {
  color: #cccccc;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s ease;
  display: inline-block;
  padding: 3px 0;
}

.footer-nav a:hover {
  color: var(--primary-color);
  padding-left: 5px;
}

.footer-bottom {
  background-color: #111111;
  text-align: center;
  padding: 20px 0;
  margin-top: 30px;
}

.footer-bottom p {
  font-size: 14px;
  color: #888888;
  margin: 0;
}

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

  .header-container {
    width: 100%;
    max-width: none;
    padding: 8px 15px;
    min-height: 60px;
  }

  .logo {
    font-size: 22px;
  }

  .desktop-nav-buttons {
    display: none;
  }

  .mobile-nav-buttons {
    display: flex;
    background: var(--primary-color);
    padding: 8px 10px;
    gap: 8px;
    justify-content: center;
    z-index: 999;
    width: 100%;
  }

  .mobile-nav-buttons .btn {
    flex: 1;
    max-width: 160px;
    padding: 8px 12px;
    font-size: 14px;
    min-width: 0;
  }

  /* Main Nav - Mobile */
  .main-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background-color: #ffffff;
    z-index: 1001;
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 70px;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    border-bottom: none;
  }

  .main-nav.active {
    display: block;
    transform: translateX(0);
  }

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 10px;
    width: 100%;
    max-width: none;
    justify-content: flex-start;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: 12px 20px;
    font-size: 16px;
    border-bottom: 1px solid #f0f0f0;
  }

  .nav-link:hover {
    background-color: #f8f9fa;
    color: var(--primary-color);
  }

  /* Hamburger Menu */
  .hamburger-menu {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    cursor: pointer;
    z-index: 1002;
    position: fixed;
    top: 10px;
    left: 10px;
    background: transparent;
    border: none;
    padding: 8px;
  }

  .hamburger-menu span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: #ffffff;
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
  }

  .hamburger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .hamburger-menu.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: none;
  }

  .mobile-menu-overlay.active {
    display: block;
  }

  /* Footer Mobile */
  .footer-container {
    grid-template-columns: 1fr;
    padding: 0 20px;
    gap: 30px;
  }

  .site-footer {
    padding-top: 40px;
  }

  .footer-bottom {
    margin-top: 20px;
  }

  /* Content protection */
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }

  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }

  body {
    overflow-x: hidden;
  }
}

/* ===== Desktop Footer Adjustment ===== */
@media (min-width: 769px) {
  .footer-bottom {
    margin-top: 40px;
  }
}
/* 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;
}