:root{color-scheme:light;font-family:"Microsoft YaHei UI","PingFang SC",system-ui,sans-serif;background:#f3f7fb;color:#17314f}*{box-sizing:border-box}body{margin:0;min-width:320px}.gate-shell{width:min(680px,calc(100% - 28px));margin:0 auto;padding:28px 0 36px}.back-link{display:inline-block;margin-bottom:18px;color:#185da8;text-decoration:none}.gate-card{padding:clamp(24px,5vw,44px);border:1px solid #c8d9ea;border-radius:22px;background:#fff;box-shadow:0 20px 55px rgba(24,64,105,.10)}.brand{display:flex;align-items:center;gap:10px;margin-bottom:26px}.brand span{display:grid;width:40px;height:40px;place-items:center;border-radius:12px;background:#1769e8;color:#fff;font-weight:900}.eyebrow{margin:0;color:#1769e8;font-size:12px;font-weight:800;letter-spacing:.12em}h1{margin:6px 0 10px;font-size:clamp(27px,6vw,38px)}.lead{margin:0 0 25px;color:#5d7087;line-height:1.8}form{display:grid;gap:15px}label span{display:block;margin-bottom:6px;font-size:13px;font-weight:800}input{width:100%;height:46px;padding:0 12px;border:1px solid #b9cde1;border-radius:10px;font:inherit}input:focus{outline:3px solid rgba(23,105,232,.18);border-color:#1769e8}.remember-option{display:inline-flex;width:max-content;max-width:100%;align-items:center;gap:8px;margin-top:2px;color:#17314f;font-size:13px;font-weight:800;line-height:1.5;cursor:pointer}.remember-option input{width:17px;height:17px;flex:0 0 17px;margin:0;padding:0;border-radius:4px;accent-color:#1769e8}.remember-option span{display:inline;margin:0}button{height:48px;border:0;border-radius:11px;background:#1769e8;color:#fff;font:inherit;font-weight:800;cursor:pointer}button:disabled{opacity:.55;cursor:wait}.status{min-height:24px;margin:12px 0 0;color:#a13434}.status.success{color:#08734a}.notice{margin-top:22px;padding:13px 15px;border-left:4px solid #1769e8;border-radius:8px;background:#edf5ff;color:#36536f}.notice p{margin:4px 0 0;font-size:13px;line-height:1.7}footer{padding:18px;text-align:center;color:#718197;font-size:12px}@media(max-width:480px){.gate-shell{padding-top:14px}.gate-card{border-radius:16px}}