:root {
  color-scheme: dark;
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  --black: #090c0d;
  --panel: #111617;
  --paper: #edf2ef;
  --muted: #8b9795;
  --line: rgba(237, 242, 239, 0.18);
  --cyan: #54e1df;
  --coral: #ff6e74;
}

* { box-sizing: border-box; }

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  background: var(--black);
  color: var(--paper);
}

body { min-height: 100svh; }

button,
input { font: inherit; letter-spacing: 0; }

button { cursor: pointer; }

button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

[hidden] { display: none !important; }

.access-shell {
  display: grid;
  grid-template-columns: minmax(340px, 1.05fr) minmax(360px, 0.95fr);
  min-height: 100svh;
}

.identity-panel {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100svh;
  padding: max(28px, env(safe-area-inset-top)) clamp(28px, 6vw, 96px) max(28px, env(safe-area-inset-bottom));
  overflow: hidden;
  border-right: 1px solid var(--line);
  background: var(--black);
}

.identity-panel::after {
  content: "";
  position: absolute;
  top: 16%;
  right: 10%;
  width: min(42vw, 560px);
  aspect-ratio: 1;
  border: 1px solid rgba(84, 225, 223, 0.36);
  transform: rotate(45deg);
  pointer-events: none;
}

.identity-panel::before {
  content: "";
  position: absolute;
  top: calc(16% + 28px);
  right: calc(10% + 28px);
  width: min(42vw, 560px);
  aspect-ratio: 1;
  border: 1px solid rgba(255, 110, 116, 0.28);
  transform: rotate(45deg);
  pointer-events: none;
}

.wordmark,
.index,
.identity-copy p,
.identity-copy span,
.form-panel footer {
  font-size: 11px;
  font-weight: 760;
}

.wordmark { color: var(--cyan); }

.identity-copy {
  position: relative;
  z-index: 1;
  align-self: center;
}

.identity-copy p { margin: 0 0 20px; color: var(--coral); }

.identity-copy h1 {
  margin: 0;
  font-size: clamp(58px, 8.5vw, 132px);
  line-height: 0.84;
  font-weight: 760;
}

.identity-copy span {
  display: block;
  margin-top: 30px;
  color: var(--muted);
}

.signal {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 34px);
  gap: 7px;
}

.signal i { height: 3px; background: var(--line); }
.signal i:first-child { background: var(--cyan); }
.signal i:nth-child(2) { background: var(--coral); }

.form-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: min(100%, 640px);
  min-height: 100svh;
  padding: max(32px, env(safe-area-inset-top)) clamp(32px, 7vw, 112px) max(26px, env(safe-area-inset-bottom));
  background: var(--panel);
}

.index { color: var(--cyan); }

.form-panel h2 {
  margin: 16px 0 0;
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 680;
}

.form-panel header p {
  margin: 14px 0 42px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

form { display: grid; }

label {
  margin: 19px 0 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

input {
  width: 100%;
  height: 52px;
  border: 0;
  border-bottom: 1px solid rgba(237, 242, 239, 0.55);
  border-radius: 0;
  padding: 0;
  background: transparent;
  color: var(--paper);
  font-size: 17px;
}

.primary-command {
  min-height: 52px;
  margin-top: 34px;
  border: 1px solid var(--cyan);
  border-radius: 2px;
  background: var(--cyan);
  color: #061011;
  font-weight: 760;
}

.primary-command:disabled { cursor: wait; opacity: 0.58; }

.text-command {
  justify-self: start;
  min-height: 42px;
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
}

.status {
  min-height: 22px;
  margin: 20px 0 0;
  color: var(--coral);
  font-size: 12px;
  line-height: 1.5;
}

.status.success { color: var(--cyan); }

.form-panel footer {
  display: flex;
  justify-content: space-between;
  margin-top: 46px;
  padding-top: 15px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.form-panel footer b { color: var(--coral); }

@media (max-width: 760px) {
  .access-shell { grid-template-columns: 1fr; }

  .identity-panel {
    min-height: 37svh;
    padding: max(22px, env(safe-area-inset-top)) 24px 22px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .identity-panel::after,
  .identity-panel::before {
    right: 12%;
    width: 48vw;
  }

  .identity-copy h1 { font-size: clamp(48px, 17vw, 76px); }
  .identity-copy p { margin-bottom: 10px; }
  .identity-copy span { margin-top: 14px; }
  .signal { display: none; }

  .form-panel {
    width: 100%;
    min-height: 63svh;
    padding: 34px 24px max(26px, env(safe-area-inset-bottom));
  }

  .form-panel h2 { font-size: 32px; }
  .form-panel header p { margin-bottom: 22px; }
  .form-panel footer { margin-top: 30px; }
}

@media (prefers-reduced-motion: no-preference) {
  .identity-panel::after { animation: signal-shift 7s ease-in-out infinite alternate; }
  @keyframes signal-shift { to { transform: rotate(49deg) translate(10px, -8px); } }
}