:root {
  color-scheme: dark;
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #090806;
  color: #f3eee7;
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 72% 28%, rgba(255, 126, 32, 0.14), transparent 34%),
    radial-gradient(circle at 18% 86%, rgba(194, 116, 48, 0.08), transparent 30%),
    linear-gradient(135deg, #070706 0%, #110d09 52%, #070706 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, transparent, black 20%, black 80%, transparent);
}

.gate-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
}

.gate-card {
  position: relative;
  width: min(560px, 100%);
  padding: 52px 54px 34px;
  overflow: hidden;
  border: 1px solid rgba(205, 146, 86, 0.25);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(26, 21, 16, 0.96), rgba(10, 9, 8, 0.98));
  box-shadow: 0 42px 100px rgba(0, 0, 0, 0.55), inset 0 1px rgba(255,255,255,.04);
}

.gate-card::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  right: -150px;
  top: -150px;
  border: 1px solid rgba(255, 135, 40, 0.22);
  border-radius: 50%;
  box-shadow: 0 0 80px rgba(255, 112, 22, 0.12);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .22em;
}

.brand-mark { color: #ff8b2c; font-size: 18px; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 62px;
  color: #bf8d5e;
  font-size: 10px;
  letter-spacing: .26em;
}

.eyebrow span { width: 32px; height: 1px; background: #ff8324; }

h1 {
  margin: 18px 0 12px;
  font-family: "Songti SC", STSong, serif;
  font-size: clamp(38px, 8vw, 58px);
  font-weight: 400;
  letter-spacing: .08em;
}

.intro { margin: 0 0 42px; color: #9d958c; font-size: 14px; line-height: 1.8; }

label { display: block; margin-bottom: 10px; color: #827a72; font-size: 10px; letter-spacing: .2em; }

.password-field {
  display: flex;
  align-items: center;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 14px;
  background: rgba(0,0,0,.24);
  transition: border-color .2s, box-shadow .2s;
}

.password-field:focus-within { border-color: #d7782f; box-shadow: 0 0 0 3px rgba(215,120,47,.1); }

input {
  width: 100%;
  min-width: 0;
  padding: 17px 18px;
  border: 0;
  outline: 0;
  background: transparent;
  color: #fff;
  font: inherit;
  letter-spacing: .08em;
}

#toggle-password {
  margin-right: 8px;
  padding: 10px;
  border: 0;
  background: transparent;
  color: #8d857d;
  cursor: pointer;
}

.error { min-height: 20px; margin: 10px 2px; color: #ff9c6c; font-size: 13px; }

.submit {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 19px;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(100deg, #ff791e, #f0a04f);
  color: #18100a;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .18s, filter .18s;
}

.submit:hover { transform: translateY(-1px); filter: brightness(1.06); }
.submit:disabled { cursor: wait; opacity: .68; transform: none; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 54px;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,.08);
  color: #625d57;
  font-size: 9px;
  letter-spacing: .16em;
}

@media (max-width: 600px) {
  .gate-shell { padding: 18px; }
  .gate-card { padding: 34px 26px 26px; border-radius: 22px; }
  .eyebrow { margin-top: 48px; }
  footer { align-items: flex-start; flex-direction: column; margin-top: 40px; }
}