:root{--bg-950: #061f19;--bg-900: #0b3028;--panel: rgba(15, 51, 42, .88);--panel-line: rgba(47, 108, 90, .45);--text: #e7efeb;--muted: #8baaa1;--gold: #d7ad39;--gold-strong: #efc44d;--danger: #f16f6f;--success: #7ee0aa}*{box-sizing:border-box}html,body{margin:0;min-height:100%}body{font-family:Noto Sans TC,PingFang TC,Microsoft JhengHei,sans-serif;color:var(--text);background:linear-gradient(180deg,#07251f,#061a16)}.login-bg{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;pointer-events:none;background:radial-gradient(900px 540px at 75% -10%,rgba(18,71,58,.4),transparent 60%),linear-gradient(120deg,#08221df2 15%,#051814db 58%)}.login-bg:before,.login-bg:after{content:"";position:absolute;background:linear-gradient(180deg,#113c3240,#051512a6);border:1px solid rgba(42,93,78,.2);transform-origin:center}.login-bg:before{width:360px;height:620px;left:-80px;bottom:-100px;transform:rotate(33deg)}.login-bg:after{width:420px;height:680px;right:-120px;bottom:-160px;transform:rotate(-28deg)}.auth-page{min-height:100vh;display:grid;place-items:center;padding:2rem 1rem}.auth-card{width:min(520px,100%);background:linear-gradient(180deg,#0f352bf0,#0b2b23f0);border:1px solid var(--panel-line);border-radius:4px;padding:1.7rem 1.8rem 1.5rem;box-shadow:0 28px 50px -32px #000c}.auth-brand{display:grid;place-items:center;text-decoration:none;margin-bottom:.65rem}.brand-mark{width:46px;height:46px;border:1px solid var(--gold-strong);color:var(--gold-strong);display:grid;place-items:center}.brand-mark svg{width:28px;height:28px}.auth-card h1{text-align:center;margin:0;color:var(--gold-strong);font-size:clamp(1.7rem,4.7vw,2.1rem);letter-spacing:.03em;font-family:"Noto Serif TC",Songti TC,serif}.subhead{text-align:center;margin:.55rem 0 1.55rem;color:var(--muted);font-size:.94rem}.auth-form{display:grid;gap:.72rem}input{width:100%;border:1px solid rgba(46,94,80,.85);background:#051d17d1;color:#dbe7e2;height:44px;border-radius:3px;padding:0 .75rem;outline:none;transition:border-color .18s ease,box-shadow .18s ease}input::placeholder{color:#6f8f85}input:focus{border-color:#5ba98f;box-shadow:0 0 0 3px #42877033}.login-btn{margin-top:.3rem;width:100%;height:44px;border:0;border-radius:3px;cursor:pointer;color:#0a241b;background:linear-gradient(180deg,#efc64d,#ca9b2a);font-weight:700;letter-spacing:.04em;display:inline-flex;align-items:center;justify-content:center;gap:.35rem}.login-btn svg{width:15px;height:15px;fill:currentColor}.login-btn:hover{filter:brightness(1.04)}.feedback{min-height:1.1rem;margin:.2rem 0 0;font-size:.85rem}.feedback.error{color:var(--danger)}.feedback.success{color:var(--success)}.auth-links{margin-top:1.05rem;display:flex;align-items:center;justify-content:space-between;gap:.8rem}.auth-links a{color:#9ebbb2;text-decoration:none;font-size:.86rem}.auth-links a:hover{color:var(--gold-strong)}.hint{margin:1.15rem 0 0;text-align:center;font-size:.78rem;color:#6d8a81}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;border:0;padding:0;clip:rect(0 0 0 0);overflow:hidden}@media (max-width: 520px){.auth-card{padding:1.35rem 1rem 1.2rem}.auth-links{flex-direction:column;align-items:flex-start}}