:root{--bg:#f5f8ff;--card:rgba(255,255,255,.82);--text:#172033;--muted:#667085;--line:rgba(17,24,39,.09);--primary:#5b7cff;--primary2:#7aa7ff;--danger:#c33;--ok:#16834a}
*{box-sizing:border-box}html,body{min-height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:radial-gradient(900px 600px at 10% 10%,rgba(91,124,255,.18),transparent 60%),radial-gradient(900px 700px at 90% 15%,rgba(122,167,255,.15),transparent 60%),linear-gradient(180deg,#f9fbff,var(--bg))}.page-shell{min-height:100vh;width:min(1120px,100%);margin:auto;padding:32px 18px;display:grid;grid-template-columns:1fr minmax(360px,470px);gap:42px;align-items:center}.page-shell.single{grid-template-columns:minmax(320px,500px);justify-content:center}.hero{padding:22px}.brand-logo{height:44px;max-width:180px;object-fit:contain;object-position:left center}.eyebrow{margin-top:28px;font-size:12px;letter-spacing:.18em;color:#7b89aa}.hero h1{font-size:38px;line-height:1.15;margin:10px 0 14px}.hero>p{font-size:16px;line-height:1.8;color:var(--muted);max-width:620px}.features{display:grid;gap:12px;margin-top:28px}.features div{padding:15px 16px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.52)}.features b,.features span{display:block}.features span{font-size:13px;color:var(--muted);margin-top:5px}.auth-card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 24px 70px rgba(20,35,70,.11);backdrop-filter:blur(16px)}.card-top{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:16px}.card-top small{font-size:11px;color:#8a96ad;letter-spacing:.15em}.card-top h2{font-size:24px;margin:4px 0 0}.card-top a,.form-row a{color:#526de0;text-decoration:none}form{display:grid;gap:14px}label{display:grid;gap:7px;font-size:13px;color:#4b5565}input{width:100%;height:46px;padding:0 13px;border:1px solid rgba(17,24,39,.12);border-radius:13px;background:rgba(255,255,255,.9);font-size:15px;outline:none;color:#172033}input:focus{border-color:rgba(91,124,255,.58);box-shadow:0 0 0 4px rgba(91,124,255,.13)}.password-wrap{position:relative}.password-wrap input{padding-right:66px}.password-wrap button{position:absolute;right:8px;top:7px;height:32px;border:0;background:transparent;color:#667085;cursor:pointer}.form-row{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:13px}.check{display:flex;grid-template-columns:auto 1fr;align-items:center;gap:7px}.check input{width:16px;height:16px}.primary,.secondary{height:46px;border:0;border-radius:13px;font-size:15px;cursor:pointer;text-align:center}.primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 12px 28px rgba(91,124,255,.22)}.primary:disabled{opacity:.65}.secondary{background:#fff;color:#344054;border:1px solid var(--line)}.linkbtn{display:flex;align-items:center;justify-content:center;text-decoration:none;margin-top:10px}.msg{min-height:20px;font-size:13px;line-height:1.55}.msg.error{color:var(--danger)}.msg.ok{color:var(--ok)}.footnote{font-size:12px;color:#98a2b3;line-height:1.6;margin-top:16px;text-align:center}.logged-box,.notice{padding:13px 14px;border-radius:13px;background:#f7f9ff;border:1px solid var(--line);font-size:13px;line-height:1.7;margin-bottom:14px}.notice.danger{color:#9f2f2f;background:#fff7f7}@media(max-width:850px){.page-shell{grid-template-columns:1fr;padding:18px 14px}.hero{display:none}.auth-card{padding:20px;border-radius:20px;box-shadow:0 18px 55px rgba(20,35,70,.09)}}
.oauth-line{display:flex;align-items:center;gap:10px;color:#98a2b3;font-size:12px;margin:14px 0}.oauth-line:before,.oauth-line:after{content:"";height:1px;background:var(--line);flex:1}.wechat-btn{width:100%;height:44px;border:1px solid rgba(22,163,74,.22);border-radius:13px;background:rgba(22,163,74,.07);color:#16834a;font-size:14px;cursor:pointer}.wechat-panel{margin-top:12px;text-align:center}.wechat-qr{width:244px;min-height:244px;margin:auto;background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px;display:flex;align-items:center;justify-content:center}.wechat-qr img,.wechat-qr canvas{max-width:220px!important;max-height:220px!important}