:root{--bg:#E6EBF2;--paper:#fff;--soft:#F4F7FB;--pale:#EAF5FF;--blue:#289CFF;--blue2:#168CE8;--line:#D7E8F6;--title:#2E3C52;--text:#3F4D63;--muted:#6F7D91;--shadow:0 14px 36px rgba(54,91,135,.14)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;overflow-x:hidden}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,#eef6ff 0,#E6EBF2 18%,#E6EBF2 100%);color:var(--text);line-height:1.75}.shell{width:min(1240px,calc(100% - 32px));margin:auto}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}.site-header{position:sticky;top:0;width:100%;z-index:9999;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);box-shadow:0 8px 24px rgba(54,91,135,.12)}.desktop-header{min-height:74px;display:flex;align-items:center;gap:24px}.brand{width:132px;flex:none}.brand img,.mobile-brand img,.drawer-head img,.footer-brand img{max-height:44px;width:auto}.nav-core{display:flex;align-items:center;justify-content:center;gap:6px;min-width:0;flex:1;white-space:nowrap}.nav-core a{padding:10px 13px;border-radius:999px;color:#48566D;font-weight:650}.nav-core a:hover,.nav-core a.active{color:var(--blue);background:var(--pale)}.header-actions{display:flex;align-items:center;gap:10px;flex:none}.app-link{color:var(--blue2);font-weight:700}.main-btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 24px;border-radius:999px;background:linear-gradient(135deg,#2BC1F4 0%,#26B5F7 55%,#25A8FB 100%);color:#fff;font-weight:800;box-shadow:0 10px 22px rgba(37,168,251,.25);white-space:nowrap;transition:.2s}.main-btn:hover{transform:translateY(-2px);filter:saturate(1.1)}.compact{padding:8px 16px}.menu-button,.icon-button{border:1px solid var(--line);background:#fff;color:#48566D;border-radius:12px;padding:9px 13px;font-weight:750;cursor:pointer}.more-wrap{position:relative}.more-menu{display:none;position:absolute;right:0;top:calc(100% + 14px);width:250px;padding:12px;background:#fff;border:1px solid rgba(40,156,255,.16);border-radius:18px;box-shadow:0 18px 42px rgba(54,91,135,.16);z-index:10000;grid-template-columns:1fr 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@media(max-width:430px){.grid-12{grid-template-columns:1fr}.main-btn.compact{padding:7px 13px}.mobile-brand{max-width:96px}}