* { box-sizing: border-box; }
  body {
    margin: 0; min-height: 100vh; background: var(--bg);
    color: var(--text); font-family: var(--sans);
    display: flex; align-items: center; justify-content: center;
    padding: var(--s-5);
  }
  .card {
    width: 100%; max-width: 420px;
    background: var(--surface);
    border: 1px solid var(--rule);
    border-radius: 14px;
    padding: 36px 32px;
    box-shadow: 0 18px 40px rgba(0,0,0,0.35);
  }
  .wordmark {
    font-family: var(--display); font-weight: 700;
    font-size: var(--t-h3); letter-spacing: -0.02em;
    display: flex; align-items: center; gap: 9px;
    margin-bottom: 6px;
  }
  .wordmark::before {
    content: ""; width: 10px; height: 10px;
    background: var(--terra); border-radius: 50%;
  }
  h1 {
    font-family: var(--display); font-weight: 700;
    font-size: 24px; margin: 14px 0 4px;
  }
  .sub { color: var(--text-dim); font-size: var(--t-small); margin-bottom: 28px; }
  form { display: flex; flex-direction: column; gap: var(--s-3); }
  label {
    font-size: var(--t-micro); text-transform: uppercase;
    letter-spacing: 0.12em; color: var(--text-dim);
    margin-bottom: 4px; display: block;
  }
  .input {
    width: 100%;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--rule-strong);
    border-radius: var(--r-sm);
    padding: 11px 14px;
    color: var(--text); font-size: 14.5px;
    font-family: inherit; outline: none;
    transition: border-color 140ms;
  }
  .input:focus { border-color: var(--terra); }
  .submit {
    margin-top: 10px;
    background: var(--terra); color: var(--paper);
    border: none; padding: var(--s-3);
    border-radius: var(--r-sm); font-family: inherit;
    font-size: 14.5px; font-weight: 500;
    cursor: pointer; transition: background 140ms;
  }
  .submit:hover { background: var(--terra-deep); }
  .submit:disabled { opacity: 0.55; cursor: not-allowed; }
  .err {
    background: rgba(1,93,103,0.15);
    border: 1px solid var(--terra-deep);
    color: var(--text); padding: 10px 12px;
    border-radius: var(--r-sm); font-size: var(--t-small);
    margin-top: 10px;
  }
  .foot {
    color: var(--text-dim); font-size: 12px;
    margin-top: 24px; text-align: center;
  }