:root{--primary:#FF8C1A;--secondary:#FFA53A;--card-bg:#17191F;--body-bg:#0D0E12;--text-main:#FFF3E6;--border:#A84F0C;--glow:#FFB04D;--deep-orange:#D96800;--header-offset:122px;--header-top-desktop:68px;--main-nav-desktop:52px;--header-top-mobile:60px;--main-nav-mobile:48px;--header-offset-mobile:110px}*{margin:0;padding:0;box-sizing:border-box}body{padding-top:var(--header-offset);background-color:var(--body-bg);color:var(--text-main);font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;display:flex;flex-direction:column;box-shadow:0 2px 12px rgba(0,0,0,0.6);background-color:var(--body-bg)}.header-top{background-color:var(--body-bg);width:100%;border-bottom:1px solid var(--border)}.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:var(--header-top-desktop)}.logo{display:inline-block;font-size:1.8rem;font-weight:800;color:var(--glow);text-decoration:none;letter-spacing:1px;text-transform:uppercase}.logo:hover{color:var(--secondary)}.desktop-nav-buttons{display:flex;gap:10px;align-items:center}.main-nav{background-color:var(--card-bg);width:100%;display:flex;justify-content:center;border-bottom:1px solid var(--border);min-height:var(--main-nav-desktop)}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;gap:16px;padding:8px 20px;width:100%}.nav-container a{color:var(--text-main);text-decoration:none;font-size:0.95rem;font-weight:500;padding:6px 10px;border-radius:4px;transition:color 0.3s ease,background-color 0.3s ease;white-space:nowrap}.nav-container a:hover,.nav-container a.active{color:var(--secondary);background-color:rgba(255,140,26,0.15)}.btn{display:inline-block;text-decoration:none;font-weight:600;border-radius:6px;transition:transform 0.2s ease,box-shadow 0.2s ease;color:var(--text-main)}.btn-register{background:linear-gradient(180deg,#FFA53A 0%,#D96800 100%);color:var(--text-main);padding:10px 22px;font-size:0.9rem;box-shadow:0 0 12px rgba(255,176,77,0.4);border:1px solid var(--glow)}.btn-register:hover{transform:translateY(-2px);box-shadow:0 0 20px rgba(255,176,77,0.7)}.hamburger-menu,.mobile-menu-overlay{display:none}.mobile-nav-buttons{display:none}@media (max-width:768px){body{padding-top:var(--header-offset-mobile)}:root{--header-offset:110px}.site-header{min-height:auto}.header-top{border-bottom:1px solid var(--border)}.header-container{width:100%;max-width:none;padding-left:12px;padding-right:12px;min-height:var(--header-top-mobile);position:relative}.logo{display:block;text-align:center;font-size:1.5rem;margin:0 auto;padding:0 50px}.desktop-nav-buttons{display:none}.main-nav{display:none;flex-direction:column;position:fixed;top:0;left:0;width:280px;height:100%;background-color:var(--card-bg);transform:translateX(-100%);transition:transform 0.3s ease,display 0s;overflow-y:auto;z-index:1002;justify-content:flex-start;padding-top:70px;border-right:2px solid var(--border)}.main-nav.active{display:flex;transform:translateX(0)}.nav-container{flex-direction:column;align-items:flex-start;gap:0;padding:10px 20px;width:100%;max-width:none;justify-content:flex-start}.nav-container a{display:block;width:100%;padding:12px 8px;font-size:1rem;border-bottom:1px solid rgba(255,255,255,0.05)}.mobile-nav-buttons{display:flex;justify-content:center;gap:10px;padding:8px 12px;background-color:var(--body-bg);border-bottom:1px solid var(--border);z-index:1001;width:100%}.hamburger-menu{display:flex;flex-direction:column;justify-content:center;gap:4px;cursor:pointer;z-index:1003;position:fixed;top:18px;left:15px;padding:6px;background:none;border:none}.hamburger-menu span{display:block;width:22px;height:2px;background-color:var(--glow);transition:all 0.3s ease}.hamburger-menu.active span:nth-child(1){transform:rotate(45deg) translate(4px,4px)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:rotate(-45deg) translate(4px,-4px)}.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.7);z-index:998}.mobile-menu-overlay.active{display:block}.page-content img{max-width:100%!important;height:auto!important;display:block}.page-content{overflow-x:hidden;max-width:100%}body{overflow-x:hidden;background-color:var(--body-bg)}}
/* 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;
}