:root{color-scheme:dark;--space:#090d18;--surface:#182338;--surface-light:#202e47;--blue:#0032a0;--red:#e4002b;--focus:#8ab4ff;--text:#fff;--muted:#b8c2d6;--edge:#677a96;--error:#ff6b81;--success:#a4e5cc;font-family:Inter,"Public Sans","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;font-size:16px;line-height:1.6;color:var(--text);background:var(--space);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;min-width:280px;min-height:100vh;min-height:100svh;background:radial-gradient(ellipse at 12% 24%,#17356152,transparent 58%),linear-gradient(140deg,#090d18,#101b30 74%,#182338)}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}a{color:var(--focus);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:4px}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}[hidden]{display:none!important}:focus-visible{outline:3px solid var(--focus);outline-offset:4px}input:focus-visible{outline-offset:2px}.shell{max-width:1200px;margin:auto;padding:0 40px}.masthead{height:104px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid #677a9638}.brand{display:inline-flex;align-items:center;gap:12px;min-height:44px;color:#fff;font-size:18px;font-weight:650;letter-spacing:-.3px}.brand:hover{text-decoration:none}.brand-muted{font-weight:450;color:#dce5f4}.home-link{min-height:44px;display:flex;align-items:center;gap:10px;font-size:14px;white-space:nowrap}.layout{display:grid;grid-template-columns:minmax(0,1fr) 424px;align-items:center;gap:80px;min-height:calc(100svh - 176px);padding:56px 0}.eyebrow{font-family:"DM Mono",ui-monospace,monospace;letter-spacing:.1em;font-size:12px;line-height:1.5;color:var(--muted);margin:0}.intro>.eyebrow{display:flex;align-items:center;gap:10px;letter-spacing:.14em}.signal{width:7px;height:7px;border-radius:50%;background:#8ab4ff;box-shadow:0 0 0 5px #8ab4ff12}h1{font-size:clamp(38px,4.2vw,56px);line-height:1.22;letter-spacing:-1.5px;font-weight:650;margin:24px 0}h1 span{color:#b9d2ff}.intro-copy{font-size:17px;line-height:1.85;color:var(--muted);margin:0}.mission-line{display:flex;align-items:center;gap:16px;font:10px/1.4 ui-monospace,monospace;letter-spacing:.1em;color:#879ab7;margin:38px 0 30px;max-width:380px}.mission-line i{height:1px;background:linear-gradient(90deg,#8ab4ff80,#8ab4ff12);flex:1}.security-note{display:flex;gap:14px;max-width:390px}.security-note>svg{color:var(--focus);margin-top:3px}.security-note h2{font-size:14px;font-weight:550;margin:0 0 7px}.security-note p{font-size:13px;line-height:1.8;color:var(--muted);margin:0}.login-card{background:linear-gradient(150deg,#202e47f0,#182338f8);border:1px solid #677a9670;border-radius:8px;padding:32px;box-shadow:0 24px 64px #03060d40;position:relative;min-width:0}.login-card::before{content:"";position:absolute;left:32px;right:32px;top:-1px;height:2px;background:linear-gradient(90deg,#8ab4ff,transparent 82%);border-radius:2px}.card-icon{width:44px;height:44px;display:grid;place-items:center;border:1px solid #8ab4ff60;background:#0032a040;border-radius:8px;color:#b9d2ff;margin-bottom:24px}.card-icon svg{width:22px;height:22px}.card-heading h2{font-size:28px;line-height:1.35;letter-spacing:-.5px;margin:8px 0}.card-heading>p:last-child{color:var(--muted);font-size:14px;margin:0}.steps{padding:0;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:8px;margin:26px 0 28px;font-size:12px;color:var(--muted)}.steps li{display:flex;align-items:center;gap:7px;white-space:nowrap}.steps li>span{display:grid;place-items:center;width:22px;height:22px;border:1px solid #677a96;border-radius:50%;font:11px ui-monospace,monospace}.steps .is-current{color:#fff}.steps .is-current>span{background:var(--blue);border-color:var(--focus)}.steps .is-done{color:#a4e5cc}.steps .is-done>span{border-color:#a4e5cc;background:#a4e5cc12}label{display:block;font-size:14px;font-weight:550;margin-bottom:8px}input{width:100%;min-width:0;min-height:48px;padding:11px 14px;color:#fff;background:#0c1526;border:1px solid var(--edge);border-radius:5px;font-size:16px}input::placeholder{color:#8e9eb7;opacity:1}.password-field{display:flex;align-items:center;position:relative}.password-field input{padding-right:52px}.password-field .icon-button{position:absolute;right:2px;top:2px}.icon-button{width:44px;height:44px;display:inline-grid;place-items:center;flex-shrink:0;border:0;border-radius:5px;color:#d6e5ff;background:transparent;padding:0}.icon-button:hover{background:#8ab4ff14}.field-hint{font-size:12px;line-height:1.7;color:var(--muted);margin:10px 0 23px}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:48px;padding:11px 16px;border:1px solid transparent;border-radius:5px;font-size:15px;font-weight:550;line-height:1.4}.button-primary{width:100%;background:var(--blue);border-color:#8ab4ff8c;color:#fff;box-shadow:0 4px 16px #0032a024;justify-content:space-between}.button-primary:hover:not(:disabled){background:#0743bd;border-color:#a7c9ff}.button-primary:active{background:#002782}.button-secondary{background:#19283e;border-color:var(--edge);color:#fff}.button-secondary:hover:not(:disabled){background:#233650}.form-footnote{display:flex;align-items:center;justify-content:center;gap:7px;font-size:12px;color:var(--muted);margin:14px 0 0}.form-footnote svg{width:14px;height:14px}.card-footer{display:flex;align-items:center;gap:8px;font-size:11px;color:#acbbd1;border-top:1px solid #677a9640;padding-top:19px;margin-top:28px}.mini-dot{width:5px;height:5px;background:#e4002b;border-radius:50%}.boot-status{font-size:14px;color:var(--muted);padding:10px 0 12px}.notice{padding:12px 14px;border:1px solid;border-radius:5px;font-size:13px;line-height:1.7;margin-bottom:20px}.notice-error{color:#ffd4dc;border-color:#ff6b8180;background:#e4002b14}.notice-info{color:#d6e5ff;border-color:#8ab4ff60;background:#0032a024}.reconnect{width:100%;margin:0 0 20px}.totp-input{letter-spacing:.45em;font-family:"DM Mono",ui-monospace,monospace;font-size:24px;text-align:center}.totp-input::placeholder{color:#7f90aa}.page-footer{height:72px;border-top:1px solid #677a9638;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:11px;color:#98a8c1;letter-spacing:.03em}
.captcha-dialog{padding:0;border:1px solid #8ab4ff70;border-radius:8px;width:358px;max-width:100vw;max-height:calc(100dvh - 16px);margin:auto;overflow:auto;background:#182338;color:white;box-shadow:0 20px 80px #0008}.captcha-dialog::backdrop{background:#020611c4;backdrop-filter:blur(5px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:6px;padding:16px 18px 0}.dialog-heading h2{font-size:18px;line-height:1.5;font-weight:550;margin:5px 0 0}.dialog-heading .eyebrow{font-size:10px;color:#b9d2ff}.dialog-description{font-size:12px;color:var(--muted);margin:9px 18px 12px}.captcha-frame{width:318px;min-height:278px;margin:auto;background:#122038;border-radius:5px;position:relative}#captcha-box{width:318px;min-height:278px}#captcha-box:empty::after{content:"正在生成拼图…";display:grid;place-items:center;width:100%;height:278px;color:var(--muted);font-size:13px}#captcha-box #tianai-captcha-parent{width:318px;height:278px;box-shadow:none;border-radius:5px;padding:8px}#captcha-box .slider-bottom{display:none}#captcha-box .slider-move-btn:focus-visible{outline:3px solid #0032a0;outline-offset:2px}#captcha-box .slider-tip{color:#182338}#captcha-box #tianai-captcha-slider-move-track-font{font-size:14px!important}.captcha-status{font-size:12px;color:var(--muted);margin:12px 18px;line-height:1.7;min-height:21px}.captcha-status.is-error{color:#ff9eb0}.captcha-status.is-success{color:var(--success)}.dialog-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:0 18px}.dialog-actions .button{min-height:44px;font-size:13px;padding:9px 12px;gap:8px}.dialog-actions .button svg{width:16px;height:16px}.dialog-actions>span{font-size:11px;color:#a8b7cc}.keyboard-hint{font-size:10px;color:#a8b7cc;margin:10px 18px 15px}
@media(min-width:1500px){.layout{min-height:760px}}
@media(max-width:980px){.shell{padding:0 28px}.layout{gap:36px;grid-template-columns:minmax(0,1fr) 400px}h1{font-size:42px}.intro-copy{font-size:15px}.security-note{max-width:340px}}
@media(max-width:760px){.shell{max-width:540px;padding:0 20px}.masthead{height:80px}.brand{gap:9px;font-size:16px}.brand img{width:32px;height:32px}.home-link{font-size:12px;gap:6px}.layout{display:block;min-height:0;padding:28px 0 30px}.intro>.eyebrow{font-size:10px}.intro h1{font-size:30px;line-height:1.35;letter-spacing:-.7px;margin:13px 0 10px}.intro h1 br{display:none}.intro-copy{font-size:13px;line-height:1.8;margin:0 0 22px}.desktop-break{display:none}.mission-line,.security-note{display:none}.login-card{padding:25px 24px}.login-card::before{left:24px;right:24px}.card-icon{display:none}.card-heading h2{font-size:25px}.card-heading .eyebrow{font-size:10px}.card-heading>p:last-child{font-size:13px}.steps{margin:22px 0 24px}.field-hint{margin-bottom:20px}.page-footer{height:64px;font-size:10px}.card-footer{margin-top:25px}}
@media(max-width:359px){.shell{padding:0 12px}.brand{font-size:14px}.home-link{font-size:11px}.intro h1{font-size:27px}.login-card{padding:22px 18px}.login-card::before{left:18px;right:18px}.steps{font-size:11px;gap:5px}.steps li{gap:5px}.steps li>span{width:20px;height:20px}.captcha-dialog{width:320px;border-radius:5px}.dialog-heading{padding-left:10px;padding-right:6px}.dialog-heading h2{font-size:17px}.dialog-description,.captcha-status{margin-left:10px;margin-right:10px}.dialog-actions{margin-left:10px;margin-right:10px}.keyboard-hint{margin-left:10px;margin-right:10px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
.captcha-frame.is-unavailable #captcha-box:empty::after{content:"点击「换一张」重新开始"}
.captcha-attribution{color:#a8b7cc;font-size:11px;min-height:44px;display:inline-flex;align-items:center}