:root {
  --bg: #f4f5f1;
  --surface: #ffffff;
  --surface-soft: #f8fbf8;
  --ink: #13211c;
  --muted: #596760;
  --brand: #153f36;
  --brand-strong: #0d2c25;
  --accent: #b69452;
  --accent-soft: #f4ecdc;
  --line: rgba(19, 33, 28, 0.12);
  --shadow: 0 24px 80px rgba(16, 28, 24, 0.12);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --font-sans: "Aptos", "Avenir Next", "Segoe UI", sans-serif;
  --font-serif: "Baskerville", "Palatino Linotype", "Book Antiqua", Georgia, serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at top left, rgba(21, 63, 54, 0.14), transparent 28%),
    radial-gradient(circle at top right, rgba(182, 148, 82, 0.14), transparent 24%),
    linear-gradient(180deg, #f2f4ef 0%, #fbfbf7 48%, #f2f5f1 100%);
}

.auth-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 72px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.auth-hero,
.auth-card {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.auth-hero {
  padding: 38px;
  color: #f6faf8;
  background:
    radial-gradient(circle at 84% 14%, rgba(182, 148, 82, 0.18), transparent 18%),
    linear-gradient(145deg, rgba(13, 44, 37, 0.98), rgba(21, 63, 54, 0.96));
}

.eyebrow,
.section-tag {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.62rem;
  font-weight: 500;
}

.eyebrow {
  margin: 0 0 18px;
  color: rgba(246, 250, 248, 0.68);
}

h1,
h2 {
  margin-top: 0;
  font-family: var(--font-serif);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(2.4rem, 4.2vw, 4rem);
  max-width: none;
  text-wrap: pretty;
}

h2 {
  margin-bottom: 10px;
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--ink);
}

.hero-copy,
.card-head p,
.helper-text,
.notice,
.field span,
.field input {
  font-size: 1rem;
}

.hero-copy {
  max-width: none;
  color: rgba(246, 250, 248, 0.82);
  line-height: 1.8;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.hero-points article {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(246, 250, 248, 0.1);
  background: rgba(255, 255, 255, 0.05);
}

.hero-points strong {
  display: block;
  margin-bottom: 6px;
}

.hero-points p {
  margin: 0;
  color: rgba(246, 250, 248, 0.72);
  line-height: 1.6;
}

.auth-card {
  padding: 34px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
}

.auth-panels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.helper-text-intro {
  margin-top: 18px;
  margin-bottom: 2px;
}

.auth-panel {
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(248, 251, 248, 0.86);
}

.card-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.auth-panel .card-head {
  display: grid;
  row-gap: 4px;
}

.auth-panel .card-head h2 {
  margin-top: 0;
  font-size: clamp(1.72rem, 2.6vw, 2.12rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin-bottom: 0;
}

.auth-panel .card-head .section-tag {
  display: block;
  margin-bottom: 0;
  line-height: 1;
  min-height: 0;
  white-space: nowrap;
  font-size: 0.56rem;
  letter-spacing: 0.09em;
  opacity: 0.72;
}

.auth-panel .card-head > p:not(.section-tag) {
  min-height: 84px;
  line-height: 1.65;
  margin-top: 10px;
}

.auth-form {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.hidden {
  display: none !important;
}

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

.field span {
  font-weight: 700;
}

.field input {
  min-height: 52px;
  padding: 0 14px;
  border: 1px solid rgba(19, 33, 28, 0.12);
  border-radius: 14px;
  background: #ffffff;
}

.button-row {
  display: flex;
  flex-wrap: nowrap;
  gap: 12px;
}

.button-row .btn {
  flex: 1 1 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 20px;
  border: 0;
  border-radius: 999px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  color: #102019;
  background: linear-gradient(135deg, #d2a75d, #b69452);
  box-shadow: 0 16px 34px rgba(182, 148, 82, 0.2);
}

.btn-secondary {
  color: #f6faf8;
  background: linear-gradient(135deg, var(--brand), var(--brand-strong));
}

.btn-light {
  color: var(--brand);
  background: var(--accent-soft);
}

.divider {
  position: relative;
  margin: 26px 0 8px;
  text-align: center;
}

.divider::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: rgba(19, 33, 28, 0.1);
}

.divider span {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 0 12px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.86);
}

.notice {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 16px;
  line-height: 1.7;
}

.notice-warn {
  color: #6f4f18;
  background: #fbf4e5;
  border: 1px solid rgba(182, 148, 82, 0.24);
}

.notice-info {
  color: var(--brand);
  background: #edf5f1;
  border: 1px solid rgba(21, 63, 54, 0.14);
}

.notice-error {
  color: #7a2828;
  background: #fbeaea;
  border: 1px solid rgba(166, 53, 53, 0.16);
}

.notice-success {
  color: #1f5b2a;
  background: #ecf8ef;
  border: 1px solid rgba(54, 129, 67, 0.16);
}

.helper-text {
  margin-top: 18px;
  color: var(--muted);
  line-height: 1.7;
}

@media (max-width: 920px) {
  .hero-points {
    grid-template-columns: 1fr;
  }

  .auth-panels {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .auth-shell {
    width: min(1180px, calc(100% - 20px));
    padding-top: 18px;
  }

  .auth-hero,
  .auth-card {
    padding: 24px;
  }

  h1 {
    max-width: none;
  }
}