:root {
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: #eff5f2;
  background: #07100d;
  --green: #58dda8;
  --muted: #8ea099;
  --line: rgba(183, 215, 201, .14);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 10% 0%, rgba(53, 211, 151, .18), transparent 34rem),
    radial-gradient(circle at 95% 5%, rgba(68, 103, 239, .13), transparent 34rem),
    #07100d;
}
button, input { font: inherit; }
.login-shell { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(390px, .9fr); min-height: 100vh; }
.intro { display: flex; flex-direction: column; padding: clamp(30px, 5vw, 72px); border-right: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 11px; font-size: 12px; font-weight: 850; letter-spacing: .12em; }
.brand-mark { display: grid; place-items: center; width: 40px; height: 40px; border: 1px solid rgba(88,221,168,.35); border-radius: 12px; color: var(--green); background: rgba(88,221,168,.08); letter-spacing: 0; }
.intro-copy { width: min(640px, 100%); margin: auto 0; padding: 80px 0; }
.eyebrow, .step { color: var(--green); font: 800 10px ui-monospace, monospace; letter-spacing: .18em; }
h1 { margin: 18px 0 24px; font-size: clamp(48px, 6.5vw, 86px); line-height: .98; letter-spacing: -.06em; }
h1 em { color: #8fa098; font-style: normal; font-weight: 600; }
.intro-copy p { max-width: 600px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.8; }
.trust-row { display: flex; flex-wrap: wrap; gap: 22px; color: #71847b; font-size: 11px; }
.trust-row span { display: flex; align-items: center; gap: 8px; }
.trust-row i { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(88,221,168,.07); }
.login-panel { display: grid; place-items: center; padding: 32px; background: rgba(11, 23, 19, .56); }
form { width: min(410px, 100%); padding: clamp(28px, 4vw, 48px); border: 1px solid var(--line); border-radius: 24px; background: rgba(14, 29, 23, .88); box-shadow: 0 34px 100px rgba(0,0,0,.34); backdrop-filter: blur(18px); }
.form-head { margin-bottom: 34px; }
.form-head h2 { margin: 13px 0 8px; font-size: 30px; letter-spacing: -.04em; }
.form-head p { margin: 0; color: var(--muted); font-size: 13px; }
label { display: grid; gap: 9px; margin-top: 18px; color: #b8c7c0; font-size: 12px; font-weight: 700; }
.input-wrap { position: relative; display: flex; align-items: center; }
.input-wrap svg { position: absolute; left: 14px; width: 18px; fill: none; stroke: #698078; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.7; pointer-events: none; }
input { width: 100%; min-height: 51px; padding: 12px 58px 12px 44px; border: 1px solid var(--line); border-radius: 12px; outline: none; color: #eff5f2; background: rgba(2,9,6,.5); }
input:focus { border-color: rgba(88,221,168,.72); box-shadow: 0 0 0 4px rgba(88,221,168,.07); }
.reveal { position: absolute; right: 8px; padding: 8px; border: 0; color: #799087; background: transparent; cursor: pointer; font-size: 11px; }
.reveal:hover { color: #c6d4ce; }
.error { margin-top: 16px; padding: 11px 12px; border: 1px solid rgba(255,142,134,.25); border-radius: 10px; color: #f0aaa5; background: rgba(255,142,134,.07); font-size: 12px; }
.submit { display: flex; align-items: center; justify-content: space-between; width: 100%; margin-top: 24px; padding: 15px 17px; border: 0; border-radius: 12px; color: #06100c; background: var(--green); cursor: pointer; font-weight: 800; }
.submit:hover { background: #75e9bb; }
.submit:disabled { opacity: .6; cursor: wait; }
.submit b { font-size: 18px; }
.privacy { margin: 18px 0 0; color: #62756c; font-size: 10px; line-height: 1.6; text-align: center; }
@media (max-width: 820px) {
  .login-shell { grid-template-columns: 1fr; }
  .intro { min-height: 300px; padding: 25px; border-right: 0; border-bottom: 1px solid var(--line); }
  .intro-copy { padding: 45px 0 28px; }
  h1 { font-size: 48px; }
  .trust-row { display: none; }
  .login-panel { padding: 24px 16px 42px; }
}
@media (max-width: 480px) {
  .intro { min-height: 260px; }
  .intro-copy p { font-size: 13px; }
  h1 { font-size: 39px; }
  form { padding: 26px 22px; border-radius: 20px; }
}