:root{--header-offset:166px;--primary:#FF8C1A;--secondary:#FFA53A;--deep-orange:#D96800;--bg-main:#0D0E12;--card-bg:#17191F;--text-main:#FFF3E6;--border:#A84F0C;--glow:#FFB04D;--btn-gradient:linear-gradient(180deg,#FFA53A 0%,#D96800 100%)}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;min-height:auto;box-shadow:0 4px 20px rgba(0,0,0,.6);background:#0D0E12;font-family:'Segoe UI',Roboto,Arial,sans-serif}.header-top{background:linear-gradient(135deg,#17191F 0%,#1F222B 100%);width:100%;border-bottom:1px solid #A84F0C}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:12px 30px;gap:15px}.logo{display:inline-block;font-size:28px;font-weight:900;color:#FFA53A;text-decoration:none;letter-spacing:1px;text-transform:uppercase;background:linear-gradient(135deg,#FFB04D,#FFA53A 40%,#D96800);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-shadow:none;filter:drop-shadow(0 2px 4px rgba(255,140,26,.3));white-space:nowrap}.logo:hover{color:#FFB04D;text-shadow:0 0 12px rgba(255,176,77,.5)}.desktop-nav-buttons{display:flex;align-items:center;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 22px;border-radius:50px;font-size:14px;font-weight:700;text-decoration:none;transition:all .3s ease;border:none;cursor:pointer;letter-spacing:.5px;min-height:40px;color:#0D0E12}.btn-register{background:var(--btn-gradient);color:#0D0E12;box-shadow:0 4px 15px rgba(255,140,26,.4)}.btn-register:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(255,165,58,.6);color:#000}.btn-login{background:transparent;color:#FFA53A;border:2px solid #FF8C1A}.btn-login:hover{background:rgba(255,140,26,.15);color:#FFB04D;border-color:#FFB04D}.btn-download{background:linear-gradient(135deg,#FF8C1A,#D96800);color:#0D0E12;box-shadow:0 4px 15px rgba(255,140,26,.3)}.btn-download:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(255,140,26,.5)}.mobile-nav-buttons{display:none}.hamburger-menu{display:none}.main-nav{display:flex;width:100%;background:linear-gradient(180deg,#1F222B 0%,#17191F 100%);border-bottom:2px solid #A84F0C}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:8px 20px;gap:2px;width:100%}.nav-link{display:inline-block;padding:10px 14px;color:#FFF3E6;text-decoration:none;font-size:15px;font-weight:600;position:relative;transition:color .3s ease;white-space:nowrap;text-align:center;border-radius:6px;margin:0 2px}.nav-link:hover{color:#FFB04D;background:rgba(255,140,26,.1)}.nav-link::after{content:'';position:absolute;bottom:4px;left:50%;transform:translateX(-50%);width:0;height:3px;background:var(--btn-gradient);border-radius:3px;transition:width .3s ease}.nav-link:hover::after{width:60%}.nav-home{color:#FFA53A;font-weight:800}.nav-promo{background:linear-gradient(135deg,rgba(255,140,26,.2),rgba(217,104,0,.15));border:1px solid rgba(255,140,26,.5);color:#FFB04D}.mobile-menu-overlay{display:none}body{padding-top:var(--header-offset);background:#0D0E12;color:#FFF3E6;margin:0;overflow-x:hidden}.site-footer{background:#17191F;color:#FFF3E6;border-top:3px solid #FF8C1A;padding:40px 0 0;font-family:'Segoe UI',Roboto,Arial,sans-serif}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px;padding:0 30px 30px}.footer-brand{display:flex;flex-direction:column;gap:15px}.footer-logo{font-size:28px;font-weight:900;color:#FFA53A;text-decoration:none;background:linear-gradient(135deg,#FFB04D,#FFA53A 40%,#D96800);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;filter:drop-shadow(0 2px 4px rgba(255,140,26,.3));display:inline-block}.footer-desc{font-size:14px;line-height:1.6;color:#C8BFAF;margin:0}.footer-heading{font-size:18px;font-weight:700;color:#FFB04D;margin:0 0 16px;padding-bottom:8px;border-bottom:2px solid #A84F0C;text-transform:uppercase;letter-spacing:1px}.footer-nav{display:flex;flex-direction:column;gap:10px}.footer-nav a{color:#C8BFAF;text-decoration:none;font-size:14px;transition:color .3s ease;padding:2px 0}.footer-nav a:hover{color:#FFA53A;text-decoration:underline}.footer-bottom{background:#0D0E12;border-top:1px solid #A84F0C;padding:20px 30px;text-align:center}.copyright{color:#FFF3E6;font-size:14px;margin:0 0 8px}.footer-note{color:#C8BFAF;font-size:12px;margin:0}@media(max-width:768px){:root{--header-offset:146px}.header-container{width:100%;max-width:none;padding:10px 15px;position:relative;display:flex;justify-content:space-between;align-items:center;flex-wrap:nowrap}.logo{font-size:22px;order:2;flex:1;text-align:center;padding:0 10px}.desktop-nav-buttons{display:none}.hamburger-menu{display:flex;flex-direction:column;justify-content:center;gap:5px;position:relative;z-index:1001;background:transparent;border:none;cursor:pointer;padding:8px;order:1;width:44px;height:44px;margin-left:0;align-items:flex-start}.hamburger-line{width:26px;height:3px;background:#FFA53A;border-radius:3px;transition:all .3s ease;display:block}.hamburger-menu.active .hamburger-line:nth-child(1){transform:translateY(8px) rotate(45deg)}.hamburger-menu.active .hamburger-line:nth-child(2){opacity:0}.hamburger-menu.active .hamburger-line:nth-child(3){transform:translateY(-8px) rotate(-45deg)}.mobile-nav-buttons{display:flex;flex-direction:row;justify-content:center;align-items:center;gap:8px;padding:8px 15px;background:linear-gradient(180deg,#17191F,#0D0E12);width:100%;max-width:none;box-sizing:border-box;border-bottom:1px solid #A84F0C}.btn{flex:1;max-width:140px;padding:8px 10px;font-size:13px;min-height:36px}.main-nav{display:none;position:fixed;top:0;left:0;width:280px;height:100vh;background:linear-gradient(180deg,#17191F 0%,#0D0E12 100%);flex-direction:column;justify-content:flex-start;align-items:flex-start;padding:80px 0 20px;transform:translateX(-100%);transition:transform .3s ease;box-shadow:4px 0 20px rgba(0,0,0,.5);z-index:1000;overflow-y:auto}.main-nav.active{display:block;transform:translateX(0)}.nav-container{max-width:none;width:100%;display:flex;flex-direction:column;justify-content:flex-start;align-items:flex-start;padding:0}.nav-link{width:100%;text-align:left;padding:14px 25px;font-size:16px;white-space:normal}.nav-link::after{display:none}.mobile-menu-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.7);z-index:999}body{overflow-x:hidden}.page-content img{max-width:100%!important;height:auto!important;display:block}.page-content{overflow-x:hidden;max-width:100%}body{overflow-x:hidden}.site-footer{padding:30px 0 0}.footer-container{width:100%;max-width:none;grid-template-columns:1fr;gap:25px;padding:0 20px 20px}.footer-bottom{padding:15px 20px}.footer-desc{font-size:13px}.footer-heading{font-size:16px}}
  .footer-nav a{font-size:14px}
.footer-nav a{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;
}