:root { font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; color: #17212b; background: #eef3f8; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
button, input { font: inherit; }
.login-shell { min-height: 100vh; display: grid; grid-template-columns: minmax(420px, 1.05fr) minmax(440px, .95fr); }
.story-panel { min-height: 100vh; padding: 38px 7vw; position: relative; display: flex; flex-direction: column; overflow: hidden; color: white; background: #0e2034; }
.story-panel::before, .story-panel::after { content: ""; position: absolute; border-radius: 50%; filter: blur(2px); }
.story-panel::before { width: 520px; height: 520px; right: -180px; top: -120px; background: radial-gradient(circle, rgba(50,142,255,.33), transparent 68%); }
.story-panel::after { width: 420px; height: 420px; left: -180px; bottom: -180px; background: radial-gradient(circle, rgba(28,205,154,.18), transparent 67%); }
.back-link { position: relative; z-index: 2; color: #a9bed2; text-decoration: none; font-size: 13px; }
.story-content { position: relative; z-index: 2; margin: auto 0; max-width: 610px; }
.brand-mark { width: 52px; height: 52px; margin-bottom: 28px; display: grid; place-items: center; border-radius: 15px; background: linear-gradient(145deg, #2f91ff, #1664d4); font-size: 24px; font-weight: 800; box-shadow: 0 15px 38px rgba(13,104,224,.3); }
.eyebrow { margin: 0 0 13px; color: #3188ef; font-size: 11px; font-weight: 800; letter-spacing: .16em; }
.story-panel .eyebrow { color: #6fafea; }
h1 { margin: 0; font-size: clamp(42px, 5vw, 66px); line-height: 1.12; letter-spacing: -.045em; }
.lead { max-width: 500px; margin: 25px 0 32px; color: #a9bed2; font-size: 17px; line-height: 1.7; }
.feature-row { display: flex; flex-wrap: wrap; gap: 10px; }
.feature-row span { padding: 8px 12px; border: 1px solid rgba(255,255,255,.14); border-radius: 999px; color: #cee0f0; background: rgba(255,255,255,.055); font-size: 12px; }
.legal { position: relative; z-index: 2; margin: 0; color: #71869a; font-size: 11px; }
.form-panel { min-height: 100vh; padding: 42px; display: grid; place-items: center; background: #f7f9fb; }
.login-card { width: min(420px, 100%); padding: 46px 44px; border: 1px solid #dbe3ea; border-radius: 18px; background: white; box-shadow: 0 24px 70px rgba(31,50,70,.11); }
.login-card h2 { margin: 0 0 8px; font-size: 31px; letter-spacing: -.025em; }
.hint { margin: 0 0 31px; color: #73808c; font-size: 14px; }
label { margin-top: 18px; display: grid; gap: 8px; color: #43515e; font-size: 12px; font-weight: 700; }
input { width: 100%; height: 46px; padding: 0 13px; border: 1px solid #cad4de; border-radius: 9px; outline: none; color: #17212b; background: #fbfcfd; }
input:focus { border-color: #3188ef; box-shadow: 0 0 0 4px rgba(49,136,239,.11); background: white; }
.password-field { position: relative; }
.password-field input { padding-right: 62px; }
.password-field button { position: absolute; right: 8px; top: 7px; height: 32px; padding: 0 8px; border: 0; color: #2875ce; background: transparent; font-size: 12px; cursor: pointer; }
.error-message { min-height: 34px; padding-top: 12px; color: #bb3030; font-size: 12px; line-height: 1.5; }
.submit-button { width: 100%; height: 48px; padding: 0 17px; display: flex; align-items: center; justify-content: space-between; border: 0; border-radius: 9px; color: white; background: #1769e0; font-weight: 750; cursor: pointer; box-shadow: 0 10px 23px rgba(23,105,224,.22); }
.submit-button:hover { background: #0f58c0; }
.submit-button:disabled { opacity: .65; cursor: wait; }
.support { margin: 23px 0 0; color: #87929c; font-size: 11px; line-height: 1.6; text-align: center; }
.mobile-brand { display: none; }
@media (max-width: 840px) {
  .login-shell { display: block; }
  .story-panel { display: none; }
  .form-panel { min-height: 100vh; padding: 24px; background: radial-gradient(circle at 50% 0, #dfefff, transparent 360px), #eef3f8; }
  .login-card { padding: 34px 27px; }
  .mobile-brand { margin-bottom: 38px; display: flex; align-items: center; gap: 10px; }
  .mobile-brand span { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 10px; color: white; background: #1769e0; font-weight: 800; }
}