:root {
  --header-offset: 166px;
  --color-primary: #11A84E;
  --color-secondary: #22C768;
  --color-bg: #08160F;
  --color-card-bg: #11271B;
  --color-text-main: #F2FFF6;
  --color-text-secondary: #A7D9B8;
  --color-border: #2E7A4E;
  --color-glow: #57E38D;
  --color-gold: #F2C14E;
  --color-divider: #1E3A2A;
  --color-deep-green: #0A4B2C;
  --button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  padding-top: var(--header-offset);
  background-color: var(--color-bg, #08160F);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* ===== SITE HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--color-bg, #08160F);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  border-bottom: 1px solid var(--color-border, #2E7A4E);
}

/* Header top */
.header-top {
  background: var(--color-deep-green, #0A4B2C);
  width: 100%;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.logo {
  display: inline-block;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-text-main, #F2FFF6);
  text-decoration: none;
  letter-spacing: 1px;
  background: linear-gradient(135deg, var(--color-gold, #F2C14E) 0%, #F9D976 50%, var(--color-gold, #F2C14E) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
  margin-right: 15px;
}

.desktop-nav-buttons {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex-shrink: 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 30px;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  color: #fff;
  background: var(--button-gradient, linear-gradient(180deg, #2AD16F 0%, #13994A 100%));
  box-shadow: 0 4px 10px rgba(18, 184, 88, 0.4);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(18, 184, 88, 0.6);
  filter: brightness(1.1);
}

.btn-primary {
  background: var(--button-gradient, linear-gradient(180deg, #2AD16F 0%, #13994A 100%));
  border: 1px solid var(--color-glow, #57E38D);
}

.btn-secondary {
  background: linear-gradient(180deg, #F2C14E 0%, #D49E2F 100%);
  border: 1px solid #F2C14E;
  box-shadow: 0 4px 10px rgba(242, 193, 78, 0.3);
}

.btn-secondary:hover {
  box-shadow: 0 6px 15px rgba(242, 193, 78, 0.5);
}

.btn-mobile-app {
  background: linear-gradient(180deg, #0F7A3E 0%, #0A5C2E 100%);
  border: 1px solid var(--color-border, #2E7A4E);
}

.btn-mobile-app:hover {
  box-shadow: 0 6px 15px rgba(17, 168, 78, 0.5);
}

/* Main Navigation */
.main-nav {
  background: var(--color-card-bg, #11271B);
  width: 100%;
  display: flex;
  align-items: center;
  min-height: 52px;
  border-bottom: 1px solid var(--color-divider, #1E3A2A);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8px 20px;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  width: 100%;
}

.nav-link {
  display: inline-block;
  padding: 8px 12px;
  color: var(--color-text-secondary, #A7D9B8);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 6px;
  transition: background 0.3s, color 0.3s;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text-main, #F2FFF6);
  background: rgba(34, 199, 104, 0.2);
}

/* Hamburger menu - hidden on desktop */
.hamburger-menu {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 1001;
}

.hamburger-menu span {
  display: block;
  width: 24px;
  height: 3px;
  margin: 2px 0;
  background: var(--color-text-main, #F2FFF6);
  border-radius: 3px;
  transition: all 0.3s ease;
}

.hamburger-menu.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.hamburger-menu.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav buttons - hidden on desktop */
.mobile-nav-buttons {
  display: none;
  background: var(--color-deep-green, #0A4B2C);
  padding: 8px 15px;
  justify-content: center;
  gap: 8px;
  border-top: 1px solid var(--color-divider, #1E3A2A);
}

.mobile-nav-buttons .btn {
  flex: 1;
  text-align: center;
  font-size: 0.9rem;
  padding: 10px 12px;
}

/* Mobile menu overlay - hidden on desktop */
.mobile-menu-overlay {
  display: none;
}

/* ===== SITE FOOTER ===== */
.site-footer {
  background: var(--color-card-bg, #11271B);
  border-top: 1px solid var(--color-border, #2E7A4E);
  padding: 40px 20px 20px;
  color: var(--color-text-secondary, #A7D9B8);
  margin-top: 40px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--color-divider, #1E3A2A);
}

.footer-column h3 {
  color: var(--color-gold, #F2C14E);
  font-size: 1.1rem;
  margin-bottom: 15px;
  font-weight: 700;
}

.footer-column ul {
  list-style: none;
  padding: 0;
}

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

.footer-column a {
  color: var(--color-text-secondary, #A7D9B8);
  text-decoration: none;
  transition: color 0.3s;
  font-size: 0.95rem;
}

.footer-column a:hover {
  color: var(--color-glow, #57E38D);
}

.footer-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-text-main, #F2FFF6);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 15px;
  background: linear-gradient(135deg, var(--color-gold, #F2C14E) 0%, #F9D976 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-description {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-secondary, #A7D9B8);
}

.footer-contact ul li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  color: var(--color-text-secondary, #A7D9B8);
  font-size: 0.9rem;
}

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 768px) {
  :root {
    --header-offset: 146px;
  }

  .header-container {
    width: 100%;
    max-width: none;
    padding: 10px 15px;
    justify-content: space-between;
    gap: 10px;
  }

  .logo {
    font-size: 1.2rem;
    order: 2;
    margin: 0 auto;
    white-space: nowrap;
  }

  .hamburger-menu {
    display: flex;
    order: 1;
  }

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

  .mobile-nav-buttons {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
  }

  .main-nav {
    position: fixed;
    top: calc(var(--header-offset, 146px) - var(--header-offset, 146px));
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    background: var(--color-card-bg, #11271B);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding-top: 80px;
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    border-right: 1px solid var(--color-border, #2E7A4E);
    display: flex;
    overflow-y: auto;
    z-index: 1010;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
  }

  .main-nav.nav-visible {
    transform: translateX(0);
  }

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    width: 100%;
    max-width: none;
    padding: 0;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: 12px 15px;
    font-size: 1rem;
    border-bottom: 1px solid rgba(46, 122, 78, 0.3);
  }

  .nav-link:hover,
  .nav-link.active {
    background: rgba(34, 199, 104, 0.3);
  }

  .mobile-menu-overlay {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1009;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
  }

  .mobile-menu-overlay.overlay-visible {
    opacity: 1;
    visibility: visible;
  }

  .footer-container {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 0 10px 30px;
  }

  .footer-column {
    margin-bottom: 0;
  }

  .footer-column ul li {
    justify-content: center;
  }

  .footer-logo {
    font-size: 1.2rem;
  }
}

/* ===== MOBILE EXTRA SAFEGUARD ===== */
@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;
  }
}
/* 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;
}