:root{font-family:system-ui,"Microsoft YaHei",sans-serif;color:var(--ink);background:var(--surface-soft);font-size:16px}*{box-sizing:border-box}body{margin:0;min-height:100dvh;display:grid;place-items:center;background:radial-gradient(ellipse at top,var(--company-soft),transparent 65%)}.platform-login{width:min(440px,calc(100vw - 32px));padding:34px;background:#ffffffdc;border:1px solid #fff;border-radius:24px;box-shadow:0 20px 70px var(--brand-shadow);animation:entry .35s ease both}.platform-mark{height:64px;width:64px;background:transparent;display:grid;place-items:center}.platform-mark img{display:block;width:64px;height:64px;object-fit:contain}h1{font-size:26px;margin:22px 0 30px}h2{font-size:18px}form{display:grid;gap:18px}label{display:grid;gap:8px;font-size:14px;color:var(--ink-muted)}input{width:100%;padding:14px;border:1px solid var(--surface-line);border-radius:12px;font:inherit;background:#fff}button{font:inherit;border:0;cursor:pointer;transition:transform .18s,background .18s}button:active{transform:scale(.98)}.platform-submit{background:var(--company-dark);color:#fff;padding:15px;border-radius:12px;margin-top:8px}.company-choice{width:100%;border:1px solid var(--surface-soft);border-left:4px solid var(--company-color);border-radius:14px;background:#fff;text-align:left;padding:20px;margin:10px 0;color:var(--company-color);display:flex;align-items:center;justify-content:space-between;animation:entry .3s ease both}.company-choice strong{font-size:19px}.company-choice span{font-size:24px}.secondary{background:transparent;color:var(--ink-muted);padding:12px}#platform-error{color:#b43942;font-size:14px;white-space:pre-wrap;line-height:1.6}.platform-loading{text-align:center;padding:14px}.platform-loading i{display:inline-block;width:26px;height:26px;border:3px solid var(--surface-line);border-top-color:var(--company-primary);border-radius:50%;animation:spin .75s linear infinite}[hidden]{display:none!important}button:disabled{opacity:.55;cursor:wait}@keyframes entry{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}