:root { color-scheme: light; --ink: #20263d; --muted: #777f94; --brand: #5965db; }
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: #fafbfe; color: var(--ink); font: 14px/1.6 "Segoe UI", "Microsoft YaHei", sans-serif; -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; }
.login-layout { display: grid; grid-template-columns: 1.08fr 1fr; min-height: 100vh; }
.login-story { color: #fff; background: #1b223b; display: flex; flex-direction: column; position: relative; overflow: hidden; padding: 44px 9%; }
.login-story::before { content: ''; position: absolute; width: 660px; height: 660px; border: 1px solid #ffffff07; border-radius: 50%; right: -370px; top: 120px; box-shadow: 0 0 0 80px #ffffff02, 0 0 0 160px #ffffff02; pointer-events: none; }
.login-brand { display: flex; align-items: center; gap: 12px; width: fit-content; position: relative; font-size: 19px; font-weight: 600; letter-spacing: .4px; }
.login-brand img { width: 42px; height: 42px; }
.login-brand small { display: block; font-size: 9px; letter-spacing: 2px; color: #8d98b5; margin-top: 2px; }
.story-content { margin: auto 0; padding: 65px 0 38px; position: relative; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 12px; color: #c0c9e1; letter-spacing: 2px; }
.eyebrow i { width: 7px; height: 7px; background: #b2d2bf; border-radius: 50%; box-shadow: 0 0 0 5px #b2d2bf0b; }
.story-content h2 { font-size: clamp(30px, 3.1vw, 48px); line-height: 1.5; font-weight: 600; letter-spacing: -1px; margin: 22px 0 20px; }
.story-content h2 span { color: #adbafa; }
.story-content p { font-size: 14px; color: #a9b3cd; line-height: 2; margin: 0; }
.network-art { position: relative; margin: 24px -18px 18px; max-width: 560px; }
.network-art svg { width: 100%; height: auto; display: block; }
.route-tag { position: absolute; display: flex; align-items: center; gap: 8px; background: #29324e; border: 1px solid #444d6a; padding: 10px 13px; border-radius: 8px; color: #e6eafd; font-size: 12px; box-shadow: 0 8px 30px #10142430; }
.route-tag i { width: 6px; height: 6px; border-radius: 50%; background: #adbafa; }
.route-tag span { color: #8d98b5; font-size: 10px; margin-left: 12px; }
.origin { top: 9%; left: 3%; }
.destination { top: 21%; right: 1%; }
.destination i { background: #b2d2bf; }
.art-note { position: absolute; bottom: 3%; left: 6%; font-size: 8px; letter-spacing: 1.5px; color: #7f8aa7; }
.story-features { display: flex; flex-wrap: wrap; gap: 22px; color: #bec8df; font-size: 12px; }
.story-features span::before { content: '✓'; color: #b2d2bf; margin-right: 8px; }
.story-footer { display: flex; justify-content: space-between; gap: 12px; color: #9ba6c3; font-size: 11px; padding-top: 30px; border-top: 1px solid #ffffff0d; }
.story-footer span:last-child { font-size: 8px; letter-spacing: 1px; align-self: center; }
.login-form-area { padding: 42px 9% 28px; display: flex; flex-direction: column; }
.login-topnote { text-align: right; color: #8c93a4; font-size: 11px; }
.login-topnote span { margin: 0 12px; color: #c5cad6; }
.login-panel { width: 100%; max-width: 380px; margin: auto; padding: 52px 0; }
.login-welcome-mark { width: 48px; height: 48px; margin-bottom: 26px; }
.login-welcome-mark img { width: 100%; }
.form-eyebrow { font-size: 10px; letter-spacing: 2px; font-weight: 600; color: #7e89a2; }
h1 { margin: 8px 0; font-size: 29px; font-weight: 650; letter-spacing: -.8px; }
.login-subtitle { color: var(--muted); margin: 0 0 35px; font-size: 13px; }
.field-label { display: block; font-size: 12px; font-weight: 600; margin: 20px 0 9px; }
.input-group { height: 50px; display: flex; align-items: center; gap: 12px; border: 1px solid #dfe3ed; border-radius: 8px; background: #fff; padding: 0 15px; transition: border-color .15s, box-shadow .15s; }
.input-group:focus-within { border-color: var(--brand); box-shadow: 0 0 0 3px #5965db12; }
.input-group > svg { width: 18px; height: 18px; fill: none; stroke: #8b95aa; stroke-width: 1.5; flex-shrink: 0; }
.input-group input { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--ink); height: 100%; font-size: 13px; }
.input-group input::placeholder { color: #9aa2b4; }
.password-toggle { border: 0; background: none; color: #7f89a2; padding: 8px; }
.login-options { display: flex; align-items: center; justify-content: space-between; gap: 8px; font-size: 11px; color: var(--muted); margin-top: 19px; }
.remember { display: flex; align-items: center; gap: 7px; cursor: pointer; color: #59617a; }
.remember input { accent-color: var(--brand); width: 15px; height: 15px; margin: 0; }
.login-error { color: #c44756; font-size: 12px; min-height: 32px; padding-top: 6px; }
.login-button { width: 100%; height: 50px; border: 1px solid var(--brand); border-radius: 8px; background: var(--brand); color: #fff; font-weight: 600; box-shadow: 0 6px 16px #5965db20; transition: background .15s, transform .15s; }
.login-button:hover { background: #4956c9; }
.button-text { display: flex; align-items: center; justify-content: center; gap: 14px; }
.button-text > span { font-size: 20px; font-weight: 400; }
.login-button:disabled { cursor: wait; opacity: .75; }
.button-loading { display: none; width: 20px; height: 20px; border: 2px solid #ffffff55; border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; }
.loading .button-loading { display: inline-block; }
.loading .button-text { display: none; }
.demo-account { margin-top: 28px; padding: 15px 18px; border: 1px dashed #dce1ee; border-radius: 8px; background: #f3f5fa; color: #737d94; font-size: 11px; }
.demo-label { display: block; margin-bottom: 7px; font-size: 10px; letter-spacing: 1px; }
.demo-account > div { display: flex; justify-content: space-between; gap: 12px; }
.demo-account b { font-family: Consolas, monospace; font-weight: 500; color: #49536f; margin-left: 6px; }
.login-help { font-size: 11px; text-align: center; color: #8e96a8; margin: 20px 0 0; }
.login-footer { font-size: 10px; color: #8992a8; text-align: center; }
.login-footer span { padding: 0 12px; }
:focus-visible { outline: 3px solid #939cf4; outline-offset: 3px; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (min-width: 1600px) { .login-story { padding-left: 12%; padding-right: 12%; } }
@media (max-width: 1000px) { .login-story { padding: 32px 7%; } .login-form-area { padding: 32px 8%; } .story-content h2 { font-size: 32px; } .story-features { gap: 10px; font-size: 10px; } .story-footer span:last-child { display: none; } }
@media (max-width: 760px) { .login-layout { display: block; } .login-story { padding: 24px; min-height: 230px; } .login-brand { font-size: 16px; } .login-brand img { width: 34px; height: 34px; } .story-content { padding: 24px 0 0; } .eyebrow, .network-art, .story-features, .story-footer { display: none; } .story-content h2 { font-size: 26px; margin: 0 0 6px; } .story-content h2 br { display: none; } .story-content > p { font-size: 12px; } .story-content > p br { display: none; } .login-form-area { padding: 28px 24px; } .login-topnote, .login-welcome-mark { display: none; } .login-panel { padding: 12px 0 35px; max-width: 420px; } h1 { font-size: 26px; } .login-subtitle { margin-bottom: 24px; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition: none !important; } }