body {
  margin: 0;
  font-family: Helvetica, Arial, sans-serif;
  color: #111;
  background: #fff;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 24px 40px;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  box-sizing: border-box;
  z-index: 100;
}

.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-right {
  justify-content: flex-end;
}

.site-header a {
  text-decoration: none;
  color: #111;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 13px;
  letter-spacing: 0.15px;
  transition: opacity 0.2s ease;
}

.site-header a:hover {
  opacity: 0.55;
}

.site-header .logo {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 34px;
  line-height: 1;
  letter-spacing: 1px;
  font-weight: 700;
  color: rgba(0,0,0,0.82);
}

.auth-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(360px, 520px) minmax(0, 1fr);
  gap: 70px;
  padding: 160px 72px 80px;
  box-sizing: border-box;
}

.auth-panel {
  max-width: 460px;
}

.auth-kicker {
  margin: 0 0 18px;
  color: rgba(0,0,0,0.48);
  font-size: 12px;
  letter-spacing: 1.8px;
  text-transform: uppercase;
}

.auth-panel h1 {
  margin: 0 0 20px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 38px;
  font-weight: 400;
  line-height: 1.1;
}

.auth-copy {
  margin: 0 0 38px;
  color: rgba(0,0,0,0.62);
  font-size: 14px;
  line-height: 1.8;
}

.auth-tabs {
  display: inline-flex;
  gap: 30px;
  margin-bottom: 26px;
  border-bottom: 1px solid rgba(0,0,0,0.12);
}

.auth-tab {
  border: 0;
  background: transparent;
  padding: 0 0 10px;
  color: rgba(0,0,0,0.48);
  cursor: pointer;
  font-size: 14px;
}

.auth-tab.active {
  color: #111;
  box-shadow: inset 0 -1px 0 #111;
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: grid;
  gap: 18px;
}

.auth-field {
  display: grid;
  gap: 8px;
}

.auth-field label {
  color: rgba(0,0,0,0.58);
  font-size: 12px;
}

.auth-field input {
  width: 100%;
  border: 0;
  border-bottom: 1px solid rgba(0,0,0,0.22);
  border-radius: 0;
  outline: 0;
  padding: 13px 0;
  background: transparent;
  color: #111;
  font-size: 15px;
  box-sizing: border-box;
}

.auth-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.auth-link {
  color: rgba(0,0,0,0.68);
  font-size: 13px;
  text-decoration: none;
  border-bottom: 1px solid rgba(0,0,0,0.28);
  padding-bottom: 3px;
}

.auth-button {
  width: 100%;
  margin-top: 18px;
  border: 0;
  background: #000;
  color: #fff;
  cursor: pointer;
  padding: 18px 22px;
  font-size: 15px;
}

.auth-note {
  min-height: 20px;
  margin: 18px 0 0;
  color: rgba(0,0,0,0.58);
  font-size: 13px;
  line-height: 1.6;
}

.auth-side {
  min-height: 520px;
  display: grid;
  place-items: center;
  background:
    linear-gradient(rgba(255,255,255,0.2), rgba(255,255,255,0.7)),
    url("images/banner333.JPG") center top / cover no-repeat;
}

.auth-brand {
  display: grid;
  justify-items: center;
  gap: 28px;
  color: rgba(0,0,0,0.62);
  text-align: center;
}

.auth-brand h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 58px;
  font-weight: 400;
  letter-spacing: 18px;
}

.auth-brand p {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
}

.auth-brand .mos-orb {
  position: relative;
  top: 0;
}

@media (max-width: 900px) {
  .site-header {
    padding: 20px 22px;
  }

  .nav-left {
    display: none;
  }

  .nav-right {
    gap: 18px;
  }

  .site-header .logo {
    font-size: 30px;
  }

  .auth-page {
    grid-template-columns: 1fr;
    padding: 128px 24px 54px;
  }

  .auth-side {
    min-height: 300px;
    order: -1;
  }

  .auth-brand h2 {
    font-size: 38px;
    letter-spacing: 12px;
  }
}