:root{--primary:#E53935;--primary-2:#FF5A4F;--primary-dark:#C62828;--primary-light:#FFE4E2;--bg:#F5F7FA;--card-bg:#FFFFFF;--text-main:#333333;--border:#E0E0E0;--header-offset:122px;--marquee-height:0px;color-scheme:light}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{padding-top:var(--header-offset);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;background:var(--bg);color:var(--text-main);line-height:1.5;overflow-x:hidden}img{max-width:100%;height:auto}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:var(--card-bg);box-shadow:0 2px 12px rgba(0,0,0,0.15);min-height:auto;display:block}.header-top{width:100%;background:linear-gradient(135deg,#B71C1C 0%,#E53935 100%);color:#fff}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:10px 24px;min-height:68px}.logo{order:1;font-size:1.8rem;font-weight:900;color:#fff;text-decoration:none;letter-spacing:1px;line-height:1.2;display:inline-block}.logo span{display:inline-block}.desktop-nav-buttons{order:2;display:flex;align-items:center;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 24px;border-radius:6px;font-size:0.9rem;font-weight:600;text-decoration:none;line-height:1.4;border:none;cursor:pointer;transition:all 0.3s ease;box-shadow:0 2px 5px rgba(0,0,0,0.2);text-transform:uppercase;letter-spacing:0.5px}.btn-register{background:linear-gradient(180deg,#FFD54F 0%,#FFC107 100%) !important;color:#5D4037 !important}.btn-login{background:linear-gradient(180deg,#FF5A4F 0%,#E53935 100%) !important;color:#fff !important}.btn-footer{background:linear-gradient(180deg,#FF5A4F 0%,#E53935 100%);color:#fff;font-size:0.85rem;padding:8px 16px}.btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,0.3)}.main-nav{display:flex;background:var(--card-bg);border-top:2px solid var(--primary-2);border-bottom:1px solid var(--border);width:100%;justify-content:center}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:6px 20px;flex-wrap:nowrap;gap:4px}.nav-link{display:inline-block;padding:10px 14px;font-size:0.9rem;font-weight:600;color:#333;text-decoration:none;border-radius:5px;transition:background 0.3s,color 0.3s;white-space:nowrap}.nav-link:hover{background:#FCEEEE;color:#C62828}.site-header .btn{text-decoration:none}.hamburger-menu{display:none}.mobile-menu-overlay{display:none}.mobile-nav-buttons{display:none}.site-footer{background:#1A1717;color:#ccc;padding:50px 0 0;margin-top:40px}.footer-container{max-width:1200px;margin:0 auto;padding:0 24px}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;margin-bottom:30px}.footer-brand .footer-logo{font-size:2rem;font-weight:900;color:#fff;text-decoration:none;display:block;margin-bottom:10px}.footer-brand .footer-logo:hover{color:#ffb74d}.footer-desc{font-size:0.9rem;color:#aaa;line-height:1.5}.footer-title{color:#FCEEEE;font-size:1.1rem;margin-bottom:15px;font-weight:700;position:relative;padding-bottom:6px}.footer-title::after{content:'';position:absolute;left:0;bottom:0;width:30px;height:2px;background:#E53935}.footer-nav{display:flex;flex-direction:column;gap:10px}.footer-nav a{color:#aaa;text-decoration:none;font-size:0.92rem;padding:4px 0;transition:color 0.3s,padding-left 0.3s;border-bottom:1px solid rgba(255,255,255,0.15);line-height:1.5}.footer-nav a:hover{color:#fff;padding-left:8px;border-bottom-color:#E53935}.footer-bottom{background:var(--footer-bottom,#000);padding:20px 0;text-align:center;border-top:1px solid rgba(255,255,255,0.05);margin-top:20px;background:#0f0c0c}.footer-bottom p{font-size:0.85rem;color:#888;letter-spacing:0.5px}.footer-bottom p span{color:#e57373}.dark-body{background-color:var(--bg)}.dark-card{background:var(--card-bg)}.site-header .btn::selection{background-color:transparent}.footer-nav a,.footer-nav{text-decoration:none}@media(max-width:768px){:root{--header-offset:110px}.header-top{background:linear-gradient(135deg,#B71C1C 0%,#E53935 100%)}.header-container{width:100%;max-width:none;min-height:60px;padding:8px 15px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:0}.logo{order:2;flex:1;text-align:center;font-size:1.6rem;color:#fff;display:block;margin:0;line-height:1.2}.desktop-nav-buttons{display:none;order:3}.mobile-nav-buttons{display:flex;width:100%;background:var(--card-bg);padding:10px 15px;justify-content:center;gap:15px;flex-wrap:nowrap;background:linear-gradient(180deg,#E53935 0%,#D32F2F 100%);border-bottom:1px solid var(--border);order:4}.mobile-nav-buttons .btn{padding:8px 18px;font-size:0.82rem;flex:0 1 auto;max-width:150px;white-space:nowrap}.hamburger-menu{display:flex;order:1;background:transparent;border:none;cursor:pointer;z-index:1002;flex-direction:column;justify-content:center;align-items:center;gap:6px;padding:12px;width:44px;height:44px;outline:none}.hamburger-menu span{width:24px;height:2.5px;background:#fff;display:block;transition:all 0.3s ease;border-radius:2px}.hamburger-menu.active span{background:#333}.hamburger-menu.active span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}.mobile-menu-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:990;transation:opacity 0.3s ease;opacity:0;visibility:hidden;transition:opacity 0.3s ease,visibility 0.3s ease}.mobile-menu-overlay.active{display:block;opacity:1;visibility:visible}.main-nav{order:5;display:none;position:fixed;top:0;left:0;height:100%;width:78%;max-width:350px;background:var(--card-bg);flex-direction:column;justify-content:flex-start;align-items:stretch;padding-top:75px;transition:transform 0.3s ease,display 0s;transform:translateX(-100%);box-shadow:2px 0 20px rgba(0,0,0,0.2);z-index:1001;overflow-y:auto}.main-nav.active{display:block;transform:translateX(0)}.nav-container{width:100%;max-width:none;flex-direction:column;align-items:stretch;padding:0;gap:0}.nav-link{white-space:normal;padding:12px 25px;font-size:1rem;border-bottom:1px solid var(--border);text-align:left;color:#333}.nav-link:hover{background:#FCEEEE;color:#C62828}.mobile-menu-overlay{display:none}.mobile-menu-overlay.active{display:block}.site-header .hamburger-menu.active+.mobile-menu-overlay{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}}@media(min-width:769px){.hamburger-menu{display:none}.mobile-menu-overlay{display:none}.mobile-nav-buttons{display:none!important}.desktop-nav-buttons{display:flex}.main-nav{position:static;transform:none}}body{padding-top:var(--header-offset)}body.no-scroll{overflow:hidden}.page-content{padding:0 0 0;background:var(--bg)}@media(max-width:768px){.page-content{padding:0}.page-content-article{padding-top:10px}.site-header .nav-link,.site-header .btn,.site-header .logo,.site-header .footer-nav a,.footer-nav a{text-decoration:none}.site-footer .footer-nav a{text-decoration:none}.footer-nav a:hover{text-decoration:none}.mobile-nav-buttons .btn{text-decoration:none}.logo,.footer-logo{text-decoration:none}}
/* 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;
}