:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #252729;
  background: #f3f4f4;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
body { min-width: 320px; min-height: 100vh; margin: 0; }
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 28px 18px; }
.login-card { width: min(100%, 440px); padding: clamp(28px, 6vw, 46px); border: 1px solid #e5e7e8; border-radius: 20px; background: #fff; box-shadow: 0 18px 54px rgb(22 27 29 / 7%); }
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 48px; color: inherit; text-decoration: none; }
.brand-mark { width: 46px; height: 46px; display: grid; place-items: center; border: 1px solid #252729; border-radius: 13px; font-size: 14px; font-weight: 760; letter-spacing: -.08em; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 16px; letter-spacing: -.03em; }
.brand small { margin-top: 4px; color: #73787c; font-size: 10px; letter-spacing: .07em; text-transform: uppercase; }
.eyebrow { margin: 0 0 9px; color: #73787c; font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(26px, 7vw, 32px); letter-spacing: -.045em; line-height: 1.15; }
.intro { margin: 12px 0 26px; color: #73787c; font-size: 14px; line-height: 1.6; }
label { display: block; margin: 18px 0 7px; color: #4d5255; font-size: 12px; font-weight: 650; }
input { width: 100%; min-height: 46px; padding: 0 13px; border: 1px solid #d9dddf; border-radius: 10px; outline: none; background: #fff; color: #252729; font: inherit; }
input:focus { border-color: #555b5e; box-shadow: 0 0 0 3px rgb(42 42 42 / 9%); }
button { width: 100%; min-height: 48px; display: flex; align-items: center; justify-content: space-between; margin-top: 26px; padding: 0 16px; border: 0; border-radius: 10px; background: #2a2a2a; color: #fff; font: inherit; font-size: 14px; font-weight: 650; cursor: pointer; }
button:hover { background: #414345; }
.secure-note { margin: 22px 0 0; color: #777d80; text-align: center; font-size: 12px; }
.secure-note span { color: #26734d; font-size: 10px; }
.error { margin: 0 0 18px; padding: 11px 12px; border: 1px solid #efd9d6; border-radius: 9px; background: #fff8f7; color: #8b3930; font-size: 13px; line-height: 1.5; }