:root {
  --m13l-primary: #140E49;
  --m13l-secondary: #2B2170;
  --m13l-text: #F7F5FF;
  --m13l-accent: #F4C95D;
  --m13l-background: #0B072B;
  --m13l-surface: #21175C;
  --m13l-border: #4C4090;
  --m13l-muted: #CAC5E8;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--m13l-background);
  color: var(--m13l-text);
  font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

main,
section,
article,
figure,
img,
a,
button,
h1,
h2,
h3,
p,
figcaption {
  max-width: 100%;
}

h1,
h2,
h3,
p,
a,
button,
figcaption,
summary {
  overflow-wrap: anywhere;
  word-break: normal;
}

img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

a {
  color: inherit;
  text-underline-offset: 4px;
}

.mask13-login-d-shell {
  width: 100%;
  min-height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 8%, rgba(76, 64, 144, 0.26), transparent 28rem),
    var(--m13l-background);
  color: var(--m13l-text);
  line-height: 1.65;
}

.mask13-login-d-wrap {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.mask13-login-d-entry,
.mask13-login-d-guide,
.mask13-login-d-mobile,
.mask13-login-d-faq,
.mask13-login-d-final {
  padding: 64px 0;
  border-bottom: 1px solid var(--m13l-primary);
}

.mask13-login-d-entry {
  background: linear-gradient(125deg, rgba(20, 14, 73, 0.98), rgba(43, 33, 112, 0.82));
}

.mask13-login-d-entry-layout,
.mask13-login-d-mobile-layout,
.mask13-login-d-final-panel {
  display: grid;
  align-items: center;
  gap: 46px;
}

.mask13-login-d-entry-layout {
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
}

.mask13-login-d-entry-layout > *,
.mask13-login-d-mobile-layout > *,
.mask13-login-d-final-panel > *,
.mask13-login-d-checks > * {
  min-width: 0;
}

.mask13-login-d-kicker,
.mask13-login-d-eyebrow {
  margin: 0 0 10px;
  color: var(--m13l-accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mask13-login-d-copy h1 {
  margin: 0;
  font-size: clamp(2.45rem, 6vw, 4.8rem);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.mask13-login-d-copy h1 strong {
  color: var(--m13l-accent);
}

.mask13-login-d-copy > p:last-of-type,
.mask13-login-d-guide-head + p,
.mask13-login-d-mobile p,
.mask13-login-d-final p {
  color: var(--m13l-muted);
}

.mask13-login-d-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.mask13-login-d-button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border: 1px solid var(--m13l-primary);
  border-radius: 13px;
  font-weight: 800;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.mask13-login-d-button:hover,
.mask13-login-d-button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.mask13-login-d-button-main {
  background: linear-gradient(135deg, var(--m13l-primary), var(--m13l-secondary));
  color: var(--m13l-text);
  box-shadow: 0 14px 30px rgba(5, 3, 27, 0.32);
}

.mask13-login-d-button-main:hover,
.mask13-login-d-button-main:focus-visible {
  background: var(--m13l-secondary);
  color: #FFFFFF;
}

.mask13-login-d-button-ghost {
  border-color: var(--m13l-border);
  background: rgba(20, 14, 73, 0.28);
  color: var(--m13l-text);
}

.mask13-login-d-button-ghost:hover,
.mask13-login-d-button-ghost:focus-visible {
  background: var(--m13l-primary);
  color: #FFFFFF;
}

.mask13-login-d-button-accent {
  background: var(--m13l-accent);
  color: var(--m13l-primary);
}

.mask13-login-d-button-accent:hover,
.mask13-login-d-button-accent:focus-visible {
  background: #FFE18A;
  color: #0B072B;
}

.mask13-login-d-visual,
.mask13-login-d-mobile-visual {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--m13l-primary);
  border-radius: 26px;
  background: var(--m13l-surface);
  box-shadow: 0 22px 54px rgba(4, 2, 22, 0.35);
}

.mask13-login-d-visual img {
  aspect-ratio: 16 / 10;
}

.mask13-login-d-mobile-visual img {
  aspect-ratio: 4 / 5;
}

.mask13-login-d-visual figcaption {
  padding: 10px 16px;
  color: var(--m13l-muted);
  font-size: 0.8rem;
}

.mask13-login-d-guide-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 24px;
}

.mask13-login-d-guide-head h2,
.mask13-login-d-mobile h2,
.mask13-login-d-faq h2,
.mask13-login-d-final h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.mask13-login-d-checks {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.mask13-login-d-checks article {
  padding: 20px;
  border: 1px solid var(--m13l-primary);
  border-radius: 18px;
  background: linear-gradient(150deg, var(--m13l-surface), rgba(20, 14, 73, 0.86));
}

.mask13-login-d-checks span {
  color: var(--m13l-accent);
  font-size: 0.8rem;
  font-weight: 900;
}

.mask13-login-d-checks h3 {
  margin: 8px 0 6px;
  font-size: 1rem;
}

.mask13-login-d-checks p {
  margin: 0;
  color: var(--m13l-muted);
  font-size: 0.9rem;
}

.mask13-login-d-note {
  margin: 18px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--m13l-primary);
  border-radius: 0 12px 12px 0;
  background: rgba(20, 14, 73, 0.58);
}

.mask13-login-d-mobile {
  background: var(--m13l-primary);
}

.mask13-login-d-mobile-layout {
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
}

.mask13-login-d-mobile-visual {
  width: min(380px, 100%);
}

.mask13-login-d-text-link {
  display: inline-flex;
  align-items: center;
  padding: 12px 4px;
  color: var(--m13l-accent);
  font-weight: 800;
}

.mask13-login-d-faq h2 {
  margin-bottom: 22px;
}

.mask13-login-d-faq-list {
  display: grid;
  gap: 10px;
}

.mask13-login-d-faq-list details {
  min-width: 0;
  padding: 0 20px;
  border: 1px solid var(--m13l-primary);
  border-radius: 15px;
  background: var(--m13l-surface);
}

.mask13-login-d-faq-list summary {
  padding: 17px 0;
  cursor: pointer;
  font-weight: 780;
}

.mask13-login-d-faq-list details[open] summary {
  color: var(--m13l-accent);
}

.mask13-login-d-faq-list p {
  margin: 0;
  padding-bottom: 17px;
  color: var(--m13l-muted);
}

.mask13-login-d-final {
  background: var(--m13l-secondary);
}

.mask13-login-d-final-panel {
  grid-template-columns: minmax(0, 1fr) auto;
  padding: 30px;
  border: 1px solid var(--m13l-primary);
  border-radius: 22px;
  background: linear-gradient(125deg, var(--m13l-primary), var(--m13l-secondary));
}

.mask13-login-d-final p {
  margin-bottom: 0;
}

@media (max-width: 860px) {
  .mask13-login-d-entry-layout,
  .mask13-login-d-mobile-layout,
  .mask13-login-d-final-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .mask13-login-d-mobile-visual {
    margin-inline: auto;
  }
}

@media (max-width: 640px) {
  .mask13-login-d-wrap {
    width: min(100% - 24px, 1080px);
  }

  .mask13-login-d-entry,
  .mask13-login-d-guide,
  .mask13-login-d-mobile,
  .mask13-login-d-faq,
  .mask13-login-d-final {
    padding: 44px 0;
  }

  .mask13-login-d-copy h1 {
    font-size: clamp(2.1rem, 13vw, 3.15rem);
  }

  .mask13-login-d-guide-head h2,
  .mask13-login-d-mobile h2,
  .mask13-login-d-faq h2,
  .mask13-login-d-final h2 {
    font-size: clamp(1.65rem, 9vw, 2.25rem);
  }

  .mask13-login-d-entry-layout,
  .mask13-login-d-mobile-layout,
  .mask13-login-d-final-panel {
    gap: 28px;
  }

  .mask13-login-d-checks {
    grid-template-columns: minmax(0, 1fr);
  }

  .mask13-login-d-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .mask13-login-d-button,
  .mask13-login-d-text-link {
    width: 100%;
    max-width: 100%;
    justify-content: center;
  }

  .mask13-login-d-final-panel {
    padding: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mask13-login-d-button {
    transition: none;
  }
}