:root {
  --bg: #11161f;
  --card: rgba(255, 255, 255, .045);
  --line: rgba(255, 255, 255, .09);
  --text: #eaeef3;
  --muted: #8a93a3;
  --brand: #24c673;
  --danger: #ff6076;
  --radius: 16px;
  --ease: .25s cubic-bezier(.4, 0, .2, 1);
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  height: 100%;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Arial, Helvetica, sans-serif;
  color: var(--text);
  background: radial-gradient(120% 90% at 50% 0%, #1e2735 0%, var(--bg) 60%);
  -webkit-font-smoothing: antialiased;
}

.gate {
  width: min(400px, 100%);
  padding: clamp(28px, 7vw, 40px) clamp(22px, 6vw, 34px);
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 24px 60px -20px rgba(0, 0, 0, .65);
  backdrop-filter: blur(6px);
}

.gate__logo {
  display: block;
  width: clamp(84px, 22vw, 104px);
  height: auto;
  margin: 0 auto clamp(16px, 4vw, 22px);
}

.gate__title {
  font-size: clamp(16px, 4.4vw, 19px);
  font-weight: 600;
  line-height: 1.5;
}

.gate__subtitle {
  margin-top: 8px;
  font-size: clamp(13px, 3.6vw, 14px);
  line-height: 1.6;
  color: var(--muted);
}

.gate__form {
  margin-top: clamp(22px, 6vw, 30px);
  text-align: left;
}

.field {
  position: relative;
}

.field__input {
  width: 100%;
  height: clamp(46px, 12vw, 52px);
  padding: 0 62px 0 16px;
  font-size: clamp(14px, 4vw, 15px);
  color: var(--text);
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: border-color var(--ease), background var(--ease), box-shadow var(--ease);
}

.field__input::placeholder {
  color: #69717f;
}

.field__input:focus {
  outline: none;
  background: rgba(255, 255, 255, .09);
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(36, 198, 115, .18);
}

.field__input.is-invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(255, 96, 118, .16);
}

.field__toggle {
  position: absolute;
  top: 50%;
  right: 8px;
  padding: 6px 8px;
  font: inherit;
  font-size: 13px;
  color: var(--muted);
  background: none;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  transform: translateY(-50%);
  transition: color var(--ease), background var(--ease);
}

.field__toggle:hover {
  color: var(--text);
  background: rgba(255, 255, 255, .07);
}

.field__error {
  min-height: 18px;
  margin-top: 8px;
  font-size: 13px;
  color: var(--danger);
}

.gate__submit {
  width: 100%;
  height: clamp(46px, 12vw, 52px);
  margin-top: 6px;
  font: inherit;
  font-size: clamp(15px, 4vw, 16px);
  font-weight: 600;
  color: #062b18;
  background: linear-gradient(180deg, #3ad98a, var(--brand));
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 10px 22px -10px rgba(36, 198, 115, .9);
  transition: transform var(--ease), filter var(--ease), box-shadow var(--ease);
}

.gate__submit:hover {
  filter: brightness(1.06);
  box-shadow: 0 12px 26px -10px rgba(36, 198, 115, 1);
}

.gate__submit:active {
  transform: translateY(1px);
}

.gate__foot {
  margin-top: clamp(20px, 5vw, 26px);
  font-size: 12px;
  color: #5f6877;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}