:root{color-scheme:light;font-family:system-ui,-apple-system,BlinkMacSystemFont,SF Pro Text,PingFang SC,Microsoft YaHei,sans-serif;color:#1d1d1f;background:#f5f5f7;--blue: #168af4;--blue-hover: #0879df;--muted: #77777d;--hairline: #dedee3;--field: #fbfbfd}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:#f5f5f7}button,input{font:inherit}button{border:0;cursor:pointer}.auth-shell{width:min(100%,520px);min-height:100vh;margin:0 auto;padding:58px 24px 28px;display:flex;flex-direction:column}.brand-block{text-align:center}.brand-link{display:inline-flex;align-items:center;justify-content:center;gap:10px;color:#0d0d0f;text-decoration:none}.brand-mark{width:29px;height:29px;display:grid;place-items:center;border-radius:7px;color:#caff22;background:#101010;font:800 21px/1 Arial,sans-serif;transform:skew(-8deg)}.brand-word{font-size:27px;line-height:1;letter-spacing:-.07em;font-style:italic;font-weight:800}.brand-block p{margin:17px 0 26px;color:var(--muted);font-size:14px;line-height:1.5}.auth-card{padding:0 28px 24px;background:#fff;border:1px solid rgba(0,0,0,.05);border-radius:20px;box-shadow:0 18px 55px #181f2a14;overflow:hidden}.method-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin:0 -28px 34px;padding:4px;border-radius:0 0 12px 12px;background:#f0f0f2}.method-tab{min-height:44px;padding:0 12px;border-radius:9px;color:#77777d;background:transparent;font-size:15px}.method-tab.active{color:#1d1d1f;background:#fff;box-shadow:0 2px 8px #00000014;font-weight:600}.auth-view[hidden],.login-method-panel[hidden],.method-tabs[hidden]{display:none!important}.title-row{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:24px}.title-row h1{margin:0;font-size:23px;line-height:1.2;letter-spacing:-.02em;font-weight:600}.view-note{margin:-12px 0 24px;color:var(--muted);font-size:14px;line-height:1.5}form{display:grid;gap:18px}label{display:grid;gap:8px;color:#48484a;font-size:14px}input:not([type=checkbox]){width:100%;height:52px;padding:0 16px;border:1px solid var(--hairline);border-radius:12px;outline:0;background:var(--field);color:#1d1d1f;font-size:16px;transition:border-color .15s ease,box-shadow .15s ease,background .15s ease}input::placeholder{color:#98989e}input:not([type=checkbox]):focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px #168af421}.form-tools{display:flex;align-items:center;justify-content:space-between;gap:16px}.remember{display:flex;align-items:center;gap:8px;color:var(--muted)}.remember input{width:17px;height:17px;margin:0;accent-color:var(--blue)}.text-link{padding:2px 0;color:#0071e3;background:transparent;font-size:14px;white-space:nowrap}.text-link:hover,.guest-link:hover,.auth-footer a:hover{text-decoration:underline}.primary{min-height:54px;padding:0 22px;border-radius:999px;color:#fff;background:var(--blue);box-shadow:0 8px 18px #168af438;font-size:17px;font-weight:600;transition:background .15s ease,transform .15s ease,box-shadow .15s ease}.primary:hover{background:var(--blue-hover);box-shadow:0 9px 22px #168af445}.primary:active{transform:scale(.99)}.primary:disabled,.secondary:disabled{opacity:.5;cursor:wait}.secondary{min-height:52px;padding:0 14px;border:1px solid var(--hairline);border-radius:12px;color:#1d1d1f;background:#f5f5f7;white-space:nowrap}.code-row{display:grid;grid-template-columns:minmax(0,1fr) 124px;gap:10px;align-items:end}.feedback{min-height:20px;color:var(--muted);font-size:13px;line-height:1.45;text-align:center}.feedback.error{color:#c9343c}.feedback.success{color:#16845b}.wechat-panel{min-height:312px;padding:20px 0 8px;display:flex;flex-direction:column;align-items:center;text-align:center}.wechat-mark{width:72px;height:72px;display:grid;place-items:center;border-radius:22px;color:#fff;background:#20b767;font-size:18px;font-weight:600}.wechat-panel h2{margin:20px 0 8px;font-size:22px;font-weight:600}.wechat-panel p{margin:0 0 24px;color:var(--muted);font-size:14px;line-height:1.55}.wechat-button{width:100%}.guest-entry{margin-top:32px;padding-top:26px;border-top:1px solid #e6e6e9;text-align:center}.guest-entry[hidden]{display:none}.guest-link{padding:4px;color:#727277;background:transparent;font-size:15px;text-decoration:underline;text-underline-offset:4px}.auth-footer{margin-top:auto;padding-top:28px;display:flex;justify-content:center;flex-wrap:wrap;gap:7px;color:#929298;font-size:12px;text-align:center}.auth-footer a{color:#77777d;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid #0071e3;outline-offset:3px}@media(max-width:560px){body{background:#fff}.auth-shell{width:100%;padding:34px 0 0}.brand-word{font-size:25px}.brand-block p{margin:14px 0 24px}.auth-card{flex:1;padding:0 22px 28px;border:0;border-radius:20px 20px 0 0;box-shadow:none}.method-tabs{margin:0 -22px 32px;border-radius:0}.auth-footer{margin-top:0;padding:20px 18px 24px;background:#fff}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}