:root {
  color-scheme: dark;
  font-family: Inter, "Noto Sans JP", "Yu Gothic UI", Meiryo, system-ui, sans-serif;
  color: #e8f1f3;
  background: #071217;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  min-width: 320px;
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  background: radial-gradient(ellipse at 50% 0, #12313a 0, #071217 56%);
}

button, input, select { font: inherit; }
button, a, select { -webkit-tap-highlight-color: transparent; }

.page-shell {
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 28px 20px;
}

.account-card {
  width: min(100%, 440px);
  padding: 28px 32px 20px;
  border: 1px solid #29434b;
  border-radius: 16px;
  background: #0d1c22;
  box-shadow: 0 20px 60px #0006;
}

.card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 26px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #edf5f6;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.02em;
  text-decoration: none;
}

.brand img {
  display: block;
  width: 38px;
  height: 38px;
  border-radius: 9px;
  object-fit: cover;
}

.language-control select {
  min-height: 36px;
  padding: 6px 28px 6px 10px;
  border: 1px solid #36545e;
  border-radius: 8px;
  color: #d9e5e8;
  background: #09161b;
  font-size: 13px;
  cursor: pointer;
}

.page-heading { margin-bottom: 25px; }
.eyebrow { margin: 0 0 7px; color: #31e58a; font-size: 11px; font-weight: 800; letter-spacing: .13em; }
h1 { margin: 0; font-size: 24px; line-height: 1.3; letter-spacing: -.025em; }
.intro { margin: 9px 0 0; color: #afc0c5; font-size: 14px; line-height: 1.6; }

.pairing-panel {
  margin: -5px 0 22px;
  padding: 14px 15px 13px;
  border: 1px solid #2b5d48;
  border-radius: 10px;
  background: #0b241b;
}

.pairing-label { margin: 0; color: #cdebd9; font-size: 13px; font-weight: 750; }
.pairing-copy { margin: 5px 0 10px; color: #a9c5b5; font-size: 12px; line-height: 1.55; }
.pairing-code { display: block; color: #58f0a2; font-size: 25px; font-weight: 850; letter-spacing: .12em; line-height: 1.25; font-variant-numeric: tabular-nums; }
.pairing-expiry { margin: 5px 0 0; color: #8daf9b; font-size: 11px; }

.field { margin: 0 0 17px; }
.field > label { display: block; margin: 0 0 7px; color: #dbe5e7; font-size: 13px; font-weight: 700; }
.field input {
  width: 100%;
  min-height: 46px;
  padding: 11px 13px;
  border: 1px solid #36545e;
  border-radius: 8px;
  color: #f0f5f6;
  background: #09161b;
  outline: none;
}

.field input:hover { border-color: #4d717c; }
.field input:focus-visible, select:focus-visible { outline: 2px solid #31e58a; outline-offset: 2px; }
.field-note { margin: 7px 0 0; color: #9cafb5; font-size: 12px; line-height: 1.5; }
.password-control { position: relative; }
.password-control input { padding-right: 52px; }

.visibility-toggle {
  position: absolute;
  top: 50%;
  right: 5px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  transform: translateY(-50%);
  border: 0;
  border-radius: 6px;
  color: #adc1c6;
  background: transparent;
  cursor: pointer;
}

.visibility-toggle:hover { color: #58f0a2; background: #12272c; }
.eye-icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.eye-slash { display: none; }
.visibility-toggle[aria-pressed="true"] .eye-slash { display: block; }

.primary-button, .secondary-button {
  width: 100%;
  min-height: 46px;
  padding: 11px 14px;
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
  transition: background-color .15s ease, border-color .15s ease, opacity .15s ease;
}

.primary-button {
  margin-top: 5px;
  border: 1px solid #31e58a;
  color: #062214;
  background: #31e58a;
}

.primary-button:hover { border-color: #55f0a0; background: #55f0a0; }
.primary-button:disabled, .secondary-button:disabled { cursor: wait; opacity: .6; }

.secondary-button {
  border: 1px solid #45616a;
  color: #e2ebed;
  background: #12242a;
}

.secondary-button:hover { border-color: #6c929c; background: #172d34; }

.mode-switch {
  margin: 20px 0 0;
  color: #aebfc4;
  text-align: center;
  font-size: 13px;
  line-height: 1.6;
}

.text-link, .secondary-link {
  border: 0;
  color: #75e9ad;
  background: transparent;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

.field-note .text-link { font-size: inherit; }
.secondary-link { display: inline-block; margin-top: 16px; padding: 4px 0; font-size: 13px; }
.mode-switch .text-link { margin-left: 4px; font-size: inherit; font-weight: 700; }
.text-link:hover, .secondary-link:hover, .card-footer a:hover { color: #a1f4c5; }
.step-copy { margin: 0 0 18px; color: #b4c4c9; font-size: 14px; line-height: 1.65; }

.consent-details, .signed-in-details {
  margin-bottom: 18px;
  padding: 13px 14px;
  border: 1px solid #29434b;
  border-radius: 9px;
  background: #09161b;
}

.consent-details p, .signed-in-details p { margin: 0; color: #9cafb5; font-size: 12px; line-height: 1.5; }
.consent-details p + p { margin-top: 11px; }
.consent-details strong, .signed-in-details strong { display: block; margin-top: 4px; color: #edf5f6; font-size: 15px; overflow-wrap: anywhere; }
.consent-details p + p strong { color: #58f0a2; letter-spacing: .09em; font-variant-numeric: tabular-nums; }
.signed-in-details { margin-bottom: 16px; }
.signed-in-details p { margin: 0; }
.billing-panel { margin: 20px 0; padding: 20px; border: 1px solid #29434b; border-radius: 12px; background: #0b2027; }
.billing-panel h2 { margin: 0 0 12px; font-size: 21px; }
.billing-state { color: #b8c9ce; line-height: 1.6; }
.billing-panel[data-plan="supporter"] { border-color: #a18bdd; background: #211e36; }
.billing-panel[data-plan="supporter"] .billing-state { color: #deccff; }
.billing-price { font-weight: 700; color: #edf5f6; }
.billing-actions { display: grid; gap: 10px; }
.billing-open { display: block; margin-top: 14px; text-decoration: none; text-align: center; }
.billing-app-note { padding-top: 14px; border-top: 1px solid #29434b; font-size: 13px; color: #b8c9ce; line-height: 1.65; }
.billing-return-steps { padding-left: 22px; margin: 0 0 18px; color: #dbe5e7; font-size: 14px; line-height: 1.65; }
.billing-return-steps li + li { margin-top: 9px; }
.status { margin: 17px 0 0; color: #b8c9ce; font-size: 13px; line-height: 1.6; }
.status.error { color: #ffaaaa; }
.status.success { color: #80eeb2; }
.completion { text-align: center; }
.completion-mark { width: 42px; height: 42px; display: grid; place-items: center; margin: 2px auto 14px; border-radius: 50%; color: #062214; background: #31e58a; font-size: 24px; font-weight: 800; }
.completion .step-copy { margin-bottom: 3px; }

.card-footer {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid #20383f;
  color: #70878d;
  font-size: 11px;
}

.footer-links { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0 11px; }
.footer-help-group { display: inline-flex; min-height: 44px; align-items: center; gap: 11px; white-space: nowrap; }
.card-footer a { color: #9db2b8; text-decoration: none; }
.card-footer a:hover { text-decoration: underline; text-underline-offset: 3px; }
.account-data-notice summary {
  display: flex;
  min-height: 44px;
  align-items: center;
  padding: 0 3px;
  color: #9db2b8;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.account-data-notice summary:hover { color: #a1f4c5; }
.account-data-copy {
  max-width: 42rem;
  margin: 6px auto 0;
  padding: 12px;
  border: 1px solid #29434b;
  border-radius: 9px;
  background: #09161b;
  color: #b4c4c9;
  font-size: 13px;
  line-height: 1.65;
  text-align: left;
}
.account-data-copy p { margin: 0; }
.account-data-copy p + p { margin-top: 8px; }
.account-data-copy .account-data-policy { color: #e1e9eb; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; clip-path: inset(50%); }

:focus-visible { outline: 2px solid #31e58a; outline-offset: 3px; }

@media (max-width: 480px) {
  .page-shell { align-items: start; padding: 20px 14px; }
  .account-card { padding: 23px 20px 17px; border-radius: 13px; }
  .card-topline { margin-bottom: 23px; }
  .page-heading { margin-bottom: 22px; }
  h1 { font-size: 22px; }
  .field input { min-height: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}