:root {
  color-scheme: light;
  --ink: #162638;
  --soft-ink: #4e6070;
  --muted: #728291;
  --line: rgba(42, 74, 94, 0.14);
  --canvas: #f5f8fb;
  --paper: rgba(255, 255, 255, 0.86);
  --brand: #1e7a8e;
  --brand-deep: #123f56;
  --danger: #b42318;
  --success: #087a55;
  --shadow: 0 26px 72px rgba(20, 54, 76, 0.12);
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(
      circle at 7% 0%,
      rgba(211, 244, 229, 0.86),
      transparent 28rem
    ),
    radial-gradient(
      circle at 95% 8%,
      rgba(216, 234, 251, 0.94),
      transparent 32rem
    ),
    var(--canvas);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}
button,
input,
textarea {
  font: inherit;
}
.wrap {
  width: min(940px, calc(100% - 40px));
  margin: 0 auto;
}
.site-header {
  display: flex;
  min-height: 82px;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: var(--ink);
  font-size: 17px;
  font-weight: 850;
  text-decoration: none;
}
.brand img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  box-shadow: 0 8px 18px rgba(24, 72, 92, 0.18);
}
.brand small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.1em;
}
.site-nav {
  display: flex;
  gap: 18px;
  color: var(--soft-ink);
  font-size: 13px;
  font-weight: 700;
}
.site-nav a {
  text-decoration: none;
}
.site-nav a[aria-current="page"],
.site-nav a:hover {
  color: var(--brand);
}

main {
  padding: 34px 0 72px;
}
.back-link {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  margin-bottom: 18px;
  color: var(--brand-deep);
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
}
.page-intro,
.legal-section,
.form-card,
.notice-card {
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.9) inset;
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}
.page-intro {
  margin-bottom: 16px;
  padding: clamp(26px, 5vw, 48px);
  border-radius: 30px;
  box-shadow: var(--shadow);
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.14em;
}
h1 {
  margin: 0;
  font-size: clamp(34px, 6vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.055em;
}
.intro {
  max-width: 760px;
  margin: 20px 0 0;
  color: var(--soft-ink);
  font-size: 16px;
  line-height: 1.85;
}
.meta {
  margin-top: 18px;
  color: var(--muted);
  font-size: 12px;
}
.legal-list {
  display: grid;
  gap: 12px;
}
.legal-section {
  padding: 24px 26px;
  border-radius: 22px;
}
.legal-section h2,
.notice-card h2 {
  margin: 0 0 9px;
  font-size: 18px;
  line-height: 1.4;
  letter-spacing: -0.02em;
}
.legal-section p,
.notice-card p,
.notice-card li {
  margin: 0;
  color: var(--soft-ink);
  font-size: 14px;
  line-height: 1.86;
}

.account-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.58fr);
  gap: 14px;
  align-items: start;
}
.form-card,
.notice-card {
  padding: 26px;
  border-radius: 24px;
}
.field {
  display: block;
  margin-bottom: 18px;
}
.field-label {
  display: block;
  margin-bottom: 7px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 780;
}
.field-help {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}
input,
textarea {
  display: block;
  width: 100%;
  border: 1px solid rgba(40, 72, 92, 0.22);
  border-radius: 14px;
  outline: none;
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink);
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}
input {
  min-height: 48px;
  padding: 0 14px;
}
textarea {
  min-height: 112px;
  padding: 13px 14px;
  resize: vertical;
}
input:focus,
textarea:focus {
  border-color: var(--brand);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(30, 122, 142, 0.13);
}
.submit-button {
  display: inline-flex;
  min-height: 50px;
  width: 100%;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 15px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  box-shadow: 0 12px 27px rgba(21, 81, 101, 0.24);
  font-weight: 800;
  cursor: pointer;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    opacity 160ms ease;
}
.submit-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 15px 31px rgba(21, 81, 101, 0.28);
}
.submit-button:disabled {
  cursor: wait;
  opacity: 0.62;
  transform: none;
}
.form-status {
  min-height: 0;
  margin: 14px 0 0;
  border-radius: 14px;
  font-size: 13px;
  line-height: 1.7;
}
.form-status:not(:empty) {
  min-height: 48px;
  padding: 12px 14px;
  background: rgba(30, 122, 142, 0.09);
  color: var(--brand-deep);
}
.form-status[data-state="success"] {
  background: rgba(8, 122, 85, 0.1);
  color: var(--success);
}
.form-status[data-state="error"] {
  background: rgba(180, 35, 24, 0.08);
  color: var(--danger);
}
.notice-card ul {
  margin: 12px 0 0;
  padding-left: 20px;
}
.notice-card li + li {
  margin-top: 8px;
}
.warning {
  margin-top: 14px !important;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-weight: 700;
}

footer {
  padding: 0 0 46px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 14px;
  margin-bottom: 5px;
}
.footer-links a {
  color: var(--brand-deep);
  font-weight: 700;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(30, 122, 142, 0.36);
  outline-offset: 4px;
}

@media (max-width: 760px) {
  .wrap {
    width: min(100% - 28px, 620px);
  }
  .site-header {
    min-height: 72px;
  }
  .site-nav {
    display: none;
  }
  main {
    padding: 24px 0 54px;
  }
  .page-intro {
    border-radius: 24px;
  }
  .legal-section {
    padding: 21px;
    border-radius: 19px;
  }
  .account-layout {
    grid-template-columns: 1fr;
  }
  .form-card,
  .notice-card {
    padding: 22px;
    border-radius: 21px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .page-intro,
  .legal-section,
  .form-card,
  .notice-card {
    background: #fff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}