:root{font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:#183e63;background:#edf5ff;font-synthesis:none;color-scheme:light}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:grid;place-items:center;padding:40px 24px;background:radial-gradient(ellipse at 12% 12%,#d4eaff 0,transparent 48%),radial-gradient(ellipse at 90% 90%,#dbeaff 0,transparent 46%),#f3f8ff}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}a{color:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}.login-shell{width:min(100%,1020px);display:grid;grid-template-columns:1.05fr 1fr;min-height:590px;border:1px solid #d7e6f7;border-radius:30px;overflow:hidden;background:#fff;box-shadow:0 24px 80px #335d8620}.welcome{display:flex;flex-direction:column;padding:42px;background:linear-gradient(145deg,#dceeff,#eef6ff)}.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;width:fit-content;font-size:22px;font-weight:800}.brand img{width:49px;height:49px;object-fit:contain;border-radius:12px}.brand small{display:block;font-size:9px;font-weight:600;letter-spacing:2px;margin-top:6px;opacity:.65}.welcome-copy{margin:auto 0;padding:48px 0 38px}.eyebrow{font-size:10px;letter-spacing:2px;font-weight:700;color:#7490ac}.welcome h1{font-size:48px;line-height:1.3;letter-spacing:-1.8px;margin:18px 0 20px}.welcome-copy p{font-size:15px;line-height:1.9;color:#68819a}.welcome-note{display:flex;align-items:center;gap:14px;padding-top:25px;border-top:1px solid #c6dcef}.welcome-note>span{font-size:25px;color:#6c9bc4}.welcome-note p{font-size:12px;line-height:1.9;color:#66829b;margin:0}.login-card{padding:63px 48px 30px;display:flex;flex-direction:column}.login-card h2{margin:14px 0 8px;font-size:30px;letter-spacing:-.8px}.subtitle{color:#8a9aab;font-size:13px;margin:0 0 35px}form{display:flex;flex-direction:column}label{font-size:13px;font-weight:650;margin:0 0 10px}input{width:100%;height:49px;border:1px solid #d7e3ef;border-radius:11px;background:#f9fbfe;padding:0 14px;outline:none;color:#254763}input:focus{border-color:#77a9d5;box-shadow:0 0 0 3px #e3f0ff}input::placeholder{color:#a2adba}#username{margin-bottom:23px}.password-field{position:relative}.password-field input{padding-right:64px}.password-field button{position:absolute;right:6px;top:6px;height:37px;padding:0 10px;border:0;background:transparent;color:#7f96ac;font-size:12px;border-radius:7px}.primary{display:flex;align-items:center;justify-content:center;gap:10px;min-height:49px;border:1px solid #accfea;border-radius:11px;background:#c9e4fc;color:#214f74;text-decoration:none;font-weight:750;font-size:14px}.primary:hover{background:#b8dcf8}#login-submit{margin-top:25px;justify-content:space-between;padding:0 18px}.get-account{margin:22px auto 0;background:transparent;border:0;color:#527da3;font-size:13px;font-weight:650;padding:7px 12px}.get-account:hover{text-decoration:underline}.account-note{font-size:11px;color:#95a4b5;text-align:center;line-height:1.7;margin:6px 0 0}.login-card footer{margin-top:auto;padding-top:40px;font-size:10px;color:#a4b2bf;text-align:center}.error{margin:15px 0 0;padding:10px 12px;background:#fff3f2;border:1px solid #f3d9d5;color:#ac5c56;border-radius:8px;font-size:12px;line-height:1.6}dialog{max-width:min(420px,calc(100vw - 32px));padding:36px;border:1px solid #d7e5f4;border-radius:22px;color:#234765;text-align:center;box-shadow:0 20px 80px #28455e33}dialog::backdrop{background:#1a355d55;backdrop-filter:blur(4px)}dialog h2{font-size:23px;margin:14px 0}dialog>p{font-size:14px;line-height:1.9;color:#70859a}dialog strong{color:#385f82}.dialog-icon{display:block;font-size:30px;color:#81afd5}.dialog-close{position:absolute;right:12px;top:10px;background:none;border:0;color:#8a9bab;font-size:25px}.bilibili-link{margin:24px 0 14px}:focus-visible{outline:3px solid #85b8e4;outline-offset:3px}@media(max-width:720px){body{padding:24px 16px}.login-shell{max-width:440px;grid-template-columns:1fr;border-radius:23px;min-height:auto}.welcome{padding:23px 27px}.brand{font-size:19px}.brand img{width:40px;height:40px}.brand small{font-size:8px}.welcome-copy,.welcome-note{display:none}.login-card{padding:33px 27px 25px}.login-card h2{font-size:28px}.subtitle{margin-bottom:28px}.login-card footer{padding-top:33px}dialog{padding:30px 24px}}@media(prefers-reduced-motion:no-preference){.login-shell{animation:appear .35s ease-out}@keyframes appear{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}}