:root { --login-blue: #169ff0; --login-ink: #26313d; --login-muted: #929ca7; }
* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
	margin: 0; overflow-x: hidden;
	background: radial-gradient(circle at 13% 82%, rgba(47,185,246,.16), transparent 25%), radial-gradient(circle at 78% 18%, rgba(100,158,247,.13), transparent 28%), linear-gradient(135deg,#f5fbff 0%,#eef7fd 48%,#f8fbfe 100%);
	color: var(--login-ink); font: 15px/1.6 "PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
.login-brand { position: fixed; z-index: 2; top: 27px; left: 40px; display: flex; align-items: baseline; gap: 4px; }
.login-brand img { display: block; width: 120px; height: 24px; object-fit: contain; }
.login-brand strong { color: #252c33; font-size: 27px; font-weight: 800; letter-spacing: .05em; }
.login-brand b { color: #ff9c27; font-size: 17px; font-style: italic; }
.login-stage { display: grid; width: min(1120px,calc(100% - 48px)); min-height: calc(100vh - 92px); margin: 0 auto; grid-template-columns: minmax(420px,1.08fr) minmax(390px,.92fr); align-items: center; gap: 90px; padding: 78px 0 54px; }
.login-visual { position: relative; min-height: 520px; }
.visual-orbit { position: absolute; border: 1px solid rgba(54,169,232,.18); border-radius: 50%; }
.orbit-one { inset: 36px 14px 30px 18px; transform: rotate(-12deg); }
.orbit-two { inset: 104px 68px 88px 76px; border-color: rgba(54,169,232,.25); transform: rotate(19deg); }
.visual-panel { position: absolute; top: 116px; right: 45px; left: 62px; display: flex; height: 260px; align-items: flex-end; gap: 18px; padding: 42px 38px; border: 1px solid rgba(255,255,255,.72); border-radius: 28px; background: rgba(255,255,255,.58); box-shadow: 0 28px 70px rgba(60,134,178,.14); backdrop-filter: blur(14px); }
.visual-panel::before { content: "实时访问趋势"; position: absolute; top: 25px; left: 35px; color: #66879b; font-size: 14px; }
.visual-panel::after { content: ""; position: absolute; right: 34px; bottom: 66px; left: 34px; height: 2px; background: #dcecf5; box-shadow: 0 -54px #e5f1f7,0 -108px #e5f1f7; }
.visual-panel i { position: relative; z-index: 1; width: 100%; border-radius: 8px 8px 2px 2px; background: linear-gradient(#66c8f5,#20a6ec); box-shadow: 0 8px 18px rgba(31,164,234,.16); }
.visual-panel i:nth-child(1){height:39%}.visual-panel i:nth-child(2){height:58%}.visual-panel i:nth-child(3){height:47%}.visual-panel i:nth-child(4){height:78%}.visual-panel i:nth-child(5){height:68%}.visual-panel i:nth-child(6){height:92%}
.visual-copy { position: absolute; right: 0; bottom: 61px; left: 0; text-align: center; }
.visual-copy strong,.visual-copy span { display: block; }.visual-copy strong { color: #31566e; font-size: 22px; font-weight: 600; letter-spacing: .08em; }.visual-copy span { margin-top: 6px; color: #8aa8b9; font-size: 14px; }
.login-card { min-height: 486px; padding: 52px 55px 44px; border: 1px solid rgba(255,255,255,.82); border-radius: 24px; background: rgba(255,255,255,.88); box-shadow: 0 28px 80px rgba(62,116,151,.13); backdrop-filter: blur(18px); }
.login-card-brand { display: flex; align-items: center; gap: 9px; color: #4f5c68; font-size: 16px; }
.login-card-brand span { display: grid; width: 29px; height: 29px; place-items: center; border-radius: 7px; background: #e7f6fe; color: var(--login-blue); }
.login-card h1 { margin: 39px 0 2px; color: #252d35; font-size: 27px; font-weight: 600; }.login-card > p { margin: 0 0 29px; color: var(--login-muted); font-size: 14px; }
.login-field { display: flex; height: 50px; align-items: center; margin-bottom: 16px; padding: 0 15px; border: 1px solid #dce5eb; border-radius: 6px; background: #fff; transition: border-color .15s,box-shadow .15s; }
.login-field:focus-within { border-color: #6dc4f2; box-shadow: 0 0 0 3px rgba(22,159,240,.08); }.login-field span { width: 27px; color: #a7b1ba; font-size: 16px; }.login-field input { width: 100%; height: 100%; border: 0; outline: 0; color: #3d4853; font: inherit; }.login-field input::placeholder { color: #b4bcc3; }
.login-error { margin: -2px 0 11px; color: #e55560; font-size: 13px; }.login-submit { width: 100%; height: 48px; margin-top: 5px; border: 0; border-radius: 6px; background: linear-gradient(90deg,#159af0,#1ba9f2); color: #fff; font-size: 16px; letter-spacing: .26em; box-shadow: 0 10px 22px rgba(25,159,238,.22); }.login-submit:hover { background: linear-gradient(90deg,#118ee2,#169de9); }.login-submit:disabled { cursor: wait; opacity: .68; }
.login-help { display: flex; justify-content: space-between; margin-top: 20px; color: #a0a9b1; font-size: 13px; }.login-help a { color: #159eea; text-decoration: none; }body > footer { position: fixed; right: 0; bottom: 22px; left: 0; color: #9ba8b1; font-size: 12px; text-align: center; }
@media(max-width:900px){.login-stage{grid-template-columns:1fr}.login-visual{display:none}.login-card{width:min(460px,100%);margin:0 auto}}
@media(max-width:520px){.login-brand{top:18px;left:21px}.login-stage{width:calc(100% - 28px);padding-top:75px}.login-card{min-height:0;padding:38px 25px 32px;border-radius:18px}body > footer{position:static;padding-bottom:18px}}