:root {
  color-scheme: dark;
  font-family: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  background: #050b10;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 75% 18%, rgba(63, 221, 200, 0.16), transparent 30rem),
    radial-gradient(circle at 15% 85%, rgba(42, 138, 188, 0.12), transparent 32rem),
    #050b10;
}

.access-gate {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: grid;
  place-items: center;
  padding: 24px;
  background-image:
    linear-gradient(rgba(98, 226, 210, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(98, 226, 210, 0.04) 1px, transparent 1px);
  background-size: 38px 38px;
}

.access-card {
  width: min(100%, 460px);
  padding: clamp(28px, 6vw, 46px);
  border: 1px solid rgba(130, 232, 218, 0.25);
  border-radius: 26px;
  background: rgba(8, 18, 25, 0.92);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.52);
  backdrop-filter: blur(18px);
}

.access-back {
  display: inline-block;
  margin-bottom: 40px;
  color: #b8c8ce;
  font-size: 14px;
  text-decoration: none;
}

.access-back:hover { color: #8ce7d9; }

.access-kicker {
  margin: 0 0 10px;
  color: #75dfd0;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.22em;
}

.access-card h1 {
  margin: 0;
  color: #f4fbfc;
  font-size: clamp(34px, 8vw, 50px);
  line-height: 1.05;
}

.access-copy {
  margin: 18px 0 30px;
  color: #aebdc3;
  line-height: 1.75;
}

.access-form label {
  display: block;
  margin-bottom: 10px;
  color: #dbe7e9;
  font-size: 14px;
  font-weight: 700;
}

.access-input-row { position: relative; }

.access-input-row input {
  width: 100%;
  height: 54px;
  padding: 0 72px 0 16px;
  border: 1px solid #31444c;
  border-radius: 13px;
  outline: none;
  background: #0c171e;
  color: #fff;
  font-size: 18px;
}

.access-input-row input:focus {
  border-color: #7be2d3;
  box-shadow: 0 0 0 3px rgba(123, 226, 211, 0.13);
}

.toggle-password {
  position: absolute;
  top: 50%;
  right: 10px;
  padding: 8px 9px;
  border: 0;
  transform: translateY(-50%);
  background: transparent;
  color: #83dcd0;
  cursor: pointer;
}

.access-error {
  min-height: 24px;
  margin: 9px 0 6px;
  color: #ffab9d;
  font-size: 14px;
}

.access-submit {
  width: 100%;
  min-height: 52px;
  border: 0;
  border-radius: 13px;
  background: #82e1d3;
  color: #061116;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
}

.access-submit:hover { background: #a1eee3; }

.access-note {
  margin: 18px 0 0;
  color: #6f838b;
  font-size: 12px;
  text-align: center;
}

.access-gate[hidden] { display: none; }