:root{--page:#190607;--surface:#300e10;--text:#fff3dd;--muted:#dbc4a3;--gold:#f4d08a;--line:#93623e;--primary:#c12723;--focus:#fff0b9;--poster:url('/images/brand/poster.jpg')}
*{box-sizing:border-box}html{font-size:16px}body.brand-page{margin:0;background:var(--page);color:var(--text);font-family:'Microsoft YaHei','PingFang SC',sans-serif;min-height:100vh}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{touch-action:manipulation}button,a{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.brand-layout{max-width:520px;margin:auto;position:relative;padding-bottom:max(32px,env(safe-area-inset-bottom))}.brand-hero{position:relative;height:410px;overflow:hidden}.brand-art{width:100%;height:100%;object-fit:cover;object-position:center top;display:block}.brand-hero:after{content:'';position:absolute;inset:70% 0 0;background:linear-gradient(transparent,var(--page));pointer-events:none}.service-link{position:absolute;z-index:2;right:16px;top:max(16px,env(safe-area-inset-top));min-height:44px;padding:10px 16px;border:1px solid var(--gold);border-radius:24px;background:rgba(35,6,8,.86);color:var(--text);font-size:14px}.auth-card{position:relative;z-index:3;margin:-38px 20px 0;padding:28px 22px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(145deg,rgba(65,16,16,.98),rgba(23,8,9,.99));box-shadow:0 16px 44px rgba(0,0,0,.26)}.auth-card h1{font-size:25px;text-align:center;letter-spacing:3px;margin:0 0 8px;color:var(--gold)}.auth-subtitle{margin:0 0 24px;text-align:center;color:var(--muted);font-size:14px}.field{display:block;margin:18px 0}.field>span{display:block;margin-bottom:8px;font-size:15px;color:var(--text)}.field input{width:100%;min-height:50px;border:1px solid var(--line);border-radius:9px;background:#17090b;color:var(--text);padding:12px 14px;font-size:16px;min-width:0}.field input::placeholder{color:#bca98e}.password-wrap{position:relative}.password-wrap input{padding-right:54px}.password-toggle{position:absolute;right:3px;top:3px;height:44px;width:44px;background:none;border:none;color:var(--gold);display:flex;align-items:center;justify-content:center}.password-toggle svg{width:22px;height:22px}.primary-btn{display:block;width:100%;min-height:52px;margin-top:24px;border:1px solid var(--gold);border-radius:28px;background:linear-gradient(115deg,#f0cf8a,#d59a4c);color:#3c1009;font-size:18px;font-weight:700;letter-spacing:3px}.primary-btn:active,.download-banner:active{filter:brightness(.9)}.primary-btn:disabled{opacity:.55;cursor:wait}.switch-link{margin:22px 0 0;text-align:center;color:var(--muted);font-size:15px}.switch-link a{display:inline-flex;min-height:44px;align-items:center;color:var(--gold);margin-left:6px;text-decoration:underline;text-underline-offset:5px}.form-message{min-height:23px;margin:12px 0 0;color:#ffdda9;font-size:14px;line-height:1.6}.download-banner{margin:20px;min-height:100px;padding:18px;border:1px solid var(--line);border-radius:12px;background:linear-gradient(120deg,#501617,#1c090b);display:flex;align-items:center;justify-content:space-between;gap:12px}.download-banner strong{display:block;font-size:19px;color:var(--gold)}.download-banner small{display:block;font-size:13px;color:var(--muted);margin-top:8px}.download-arrow{font-size:30px;color:var(--gold)}.brand-footer{font-size:13px;text-align:center;color:var(--muted);padding:10px 20px}.invite-action{min-height:44px;padding:6px 12px;border:1px solid var(--line);background:var(--surface);color:var(--gold);border-radius:8px;margin-top:8px}.brand-dialog{max-width:340px;width:calc(100% - 40px);border:1px solid var(--line);border-radius:16px;background:var(--surface);color:var(--text);padding:24px}.brand-dialog::backdrop{background:rgba(0,0,0,.75)}.brand-dialog button,.brand-dialog a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:8px 16px;border:1px solid var(--line);border-radius:8px;background:var(--page);color:var(--gold);margin:6px}.poster-layout{min-height:max(100vh,calc(min(100vw,520px)*2.33));background:var(--poster) center top/100% auto no-repeat;display:flex;flex-direction:column;justify-content:flex-end;padding:32px 24px max(40px,env(safe-area-inset-bottom))}.poster-panel{border:1px solid var(--line);border-radius:20px;background:rgba(25,6,7,.94);padding:24px;text-align:center;margin-top:320px}.poster-panel h1{font-size:25px;margin:0 0 10px;color:var(--gold)}.poster-panel p{font-size:15px;line-height:1.8;color:var(--muted)}.qr-frame{width:200px;height:200px;margin:20px auto;background:#fff;border-radius:12px;padding:10px;display:flex;align-items:center;justify-content:center;color:#555;font-size:14px}.qr-frame img{width:100%;height:100%;object-fit:contain}.poster-panel .primary-btn{align-items:center;justify-content:center;display:flex;letter-spacing:1px}.back-link{position:absolute;top:20px;left:18px;z-index:5;min-height:44px;padding:12px 18px;border:1px solid var(--line);border-radius:22px;background:var(--surface)}@media(min-width:900px){.brand-layout.auth-layout{max-width:1050px;display:grid;grid-template-columns:1.1fr 1fr;padding:48px 32px;gap:28px;align-items:start}.auth-layout .brand-hero{height:740px;border-radius:16px;grid-row:1/4}.auth-layout .auth-card{margin:42px 0 0}.auth-layout .download-banner{margin:0}.auth-layout .brand-footer{margin:0}.brand-hero:after{inset:80% 0 0}}@media(max-width:360px){.brand-hero{height:360px}.auth-card{margin-left:12px;margin-right:12px;padding:24px 16px}.poster-panel{padding:20px 14px}.qr-frame{width:180px;height:180px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

[hidden]{display:none!important}