@charset "UTF-8";
:root{color-scheme:dark;font-family:"Microsoft JhengHei","PingFang TC",system-ui,sans-serif;background:#111214;color:#e3e3e4;font-size:17px}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 15% 50%,#20222670,transparent 65%)}main{max-width:1360px;margin:auto;padding:40px 64px 24px;min-height:100svh;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:14px;font-size:.75rem;letter-spacing:.18em;color:#d5d6d8;text-decoration:none;font-weight:600}.brand img{border-radius:12px}.layout{display:grid;grid-template-columns:1.15fr 1fr;gap:clamp(48px,9vw,144px);align-items:center;flex:1;padding:64px 0}.eyebrow{font-size:.67rem;letter-spacing:.22em;color:#a5a7ab;margin:0 0 24px}h1{font-size:clamp(2.5rem,4.5vw,4rem);font-weight:500;line-height:1.35;letter-spacing:-.045em;margin:0 0 24px}h2{font-size:1.65rem;letter-spacing:-.03em;font-weight:500;margin:0 0 14px}.lead{color:#a6a7ab;font-size:.93rem;line-height:1.8}.card{padding:40px;border:1px solid #36383c;border-radius:24px;background:linear-gradient(145deg,#202226e6,#18191ce6);box-shadow:0 30px 90px #0003;min-width:0}.muted,.hint,.footnote{color:#a3a5aa;line-height:1.7}.muted{margin:0 0 32px;font-size:.92rem}label{display:block;font-size:.8rem;margin:0 0 12px}input{width:100%;background:#111315;border:1px solid #45484f;border-radius:10px;color:#f1f2f4;padding:16px;font:500 1.5rem ui-monospace,monospace;letter-spacing:.14em;transition:border-color .2s,box-shadow .2s}input:focus-visible{outline:none;border-color:#c5c7cc;box-shadow:0 0 0 3px #c5c7cc20}.hint{font-size:.73rem;margin:12px 0 28px}button{width:100%;border:1px solid transparent;border-radius:10px;background:#c1c3c7;color:#17191d;font:inherit;font-size:.93rem;font-weight:600;min-height:54px;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;transition:background .2s,transform .2s}button:hover:not(:disabled){background:#e3e4e6;transform:translateY(-1px)}button:focus-visible,a:focus-visible{outline:2px solid #ededee;outline-offset:4px}button:disabled{cursor:wait;opacity:.65}button span{font-size:1.25rem}#login-message{font-size:.8rem;line-height:1.6;color:#edbcb8;min-height:1.6em;margin:14px 0 10px}.help{padding:24px 0;border-top:1px solid #36383d}.help span{font-size:.83rem}.help p{color:#a9abb0;font-size:.83rem;line-height:1.8;margin:8px 0 0}code{color:#dddfe3;font:inherit;background:#2b2d32;padding:3px 6px;border-radius:4px}.footnote{font-size:.71rem;margin:0}.frame{margin-top:40px;height:160px;max-width:360px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}.orbit{height:120px;width:120px;border:1px solid #85898f;border-radius:50%;position:relative;opacity:.45;transform:rotate(-25deg) scaleX(1.8)}.orbit:before,.orbit:after{content:"";position:absolute;inset:12px -22px;border:1px solid #7a7d84;border-radius:50%;transform:rotate(45deg)}.orbit:after{inset:20px -28px;transform:rotate(85deg)}.frame-label{position:absolute;bottom:9px;left:15px;font-size:.52rem;letter-spacing:.24em;color:#8c8e94}.corner{position:absolute;width:20px;height:20px;border-color:#575a60}.top{top:0;left:0;border-top:1px solid;border-left:1px solid}.bottom{bottom:0;right:0;border-bottom:1px solid;border-right:1px solid}footer{border-top:1px solid #2b2d32;display:flex;justify-content:space-between;gap:16px;padding-top:22px;font-size:.67rem;color:#94979c}footer span{letter-spacing:.2em;font-size:.57rem}@media(max-width:760px){main{padding:28px 24px 24px}.layout{grid-template-columns:1fr;gap:32px;padding:40px 0}.intro h1{font-size:2.3rem}.intro .eyebrow{margin-bottom:18px}.lead{margin-bottom:0}.frame{display:none}.card{padding:28px 24px;max-width:480px;width:100%;justify-self:center}.intro{max-width:480px;width:100%;justify-self:center}footer span{display:none}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}