:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  color: #f4efde;
  background: #071412;
  font-synthesis: none;
  line-height: 1.7;
}

h1, h2, h3 {
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 94px;
}

body {
  min-width: 280px;
  min-height: 100dvh;
  margin: 0;
  background:
    radial-gradient(circle at 18% 0%, rgba(58, 130, 116, 0.2), transparent 34rem),
    radial-gradient(circle at 85% 30%, rgba(157, 116, 45, 0.16), transparent 34rem),
    linear-gradient(145deg, #071815, #090f0e 62%, #151107);
}

a {
  color: #9ddbd0;
  text-underline-offset: 0.2em;
}

a:hover,
a:focus-visible {
  color: #d9fff7;
}

.public-beta-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 76px;
  padding:
    max(10px, env(safe-area-inset-top))
    max(18px, env(safe-area-inset-right))
    10px
    max(18px, env(safe-area-inset-left));
  border-bottom: 1px solid rgba(213, 179, 96, 0.45);
  background: rgba(7, 24, 21, 0.93);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(16px);
}

.public-beta-header p,
.public-beta-header h1 {
  margin: 0;
}

.public-beta-header p {
  color: #83cfc2;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.2em;
}

.public-beta-header h1 {
  font-size: clamp(18px, 3vw, 25px);
  line-height: 1.25;
}

.public-beta-back {
  display: grid;
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid rgba(139, 212, 198, 0.52);
  border-radius: 13px;
  color: #fff0b9;
  background: linear-gradient(145deg, rgba(35, 82, 74, 0.9), rgba(10, 34, 31, 0.95));
  box-shadow: 0 7px 16px rgba(0, 0, 0, 0.3);
  font-size: 30px;
  font-weight: 900;
  line-height: 1;
  text-decoration: none;
}

.public-beta-main {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(28px, 5vw, 62px) 0 64px;
}

.public-beta-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.8fr);
  gap: clamp(24px, 5vw, 58px);
  align-items: center;
  padding: clamp(26px, 5vw, 56px);
  border: 1px solid rgba(205, 167, 81, 0.52);
  border-radius: 24px;
  background:
    linear-gradient(110deg, rgba(28, 70, 61, 0.88), rgba(18, 28, 24, 0.9)),
    url("../assets/backgrounds/emblem.webp") center / min(66%, 620px) auto no-repeat;
  box-shadow: 0 24px 62px rgba(0, 0, 0, 0.34), inset 0 0 0 1px rgba(255, 244, 190, 0.05);
}

.public-beta-eyebrow,
.public-beta-number {
  margin: 0 0 4px;
  color: #7fd1c3;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.public-beta-hero h2,
.public-beta-card h2 {
  margin: 0 0 14px;
  color: #fff1bd;
  line-height: 1.35;
}

.public-beta-hero h2 {
  font-size: clamp(28px, 5vw, 48px);
}

.public-beta-hero p:last-child {
  margin-bottom: 0;
}

.public-beta-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin: 0;
}

.public-beta-summary div {
  padding: 13px 15px;
  border: 1px solid rgba(133, 196, 184, 0.27);
  border-radius: 12px;
  background: rgba(5, 19, 17, 0.72);
}

.public-beta-summary dt {
  color: #82b9b0;
  font-size: 11px;
  font-weight: 800;
}

.public-beta-summary dd {
  margin: 1px 0 0;
  color: #fff7da;
  font-weight: 850;
}

.public-beta-summary-with-tip {
  display: flex;
  align-items: center;
  gap: 7px;
}

.public-beta-tip {
  position: relative;
  flex: 0 0 auto;
  font-weight: 700;
}

.public-beta-tip summary {
  display: grid;
  width: 20px;
  height: 20px;
  padding: 0;
  place-items: center;
  border: 1px solid rgba(157, 219, 208, 0.5);
  border-radius: 50%;
  color: #b8e6de;
  background: rgba(24, 65, 58, 0.78);
  font-size: 12px;
  font-weight: 900;
  line-height: 1;
  list-style: none;
  cursor: pointer;
}

.public-beta-tip summary::-webkit-details-marker {
  display: none;
}

.public-beta-tip summary:hover,
.public-beta-tip summary:focus-visible,
.public-beta-tip[open] summary {
  border-color: rgba(194, 241, 232, 0.86);
  color: #f0fffb;
  background: rgba(40, 94, 83, 0.94);
}

.public-beta-tip p {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 12;
  width: min(310px, calc(100vw - 48px));
  margin: 0;
  padding: 11px 13px;
  border: 1px solid rgba(157, 219, 208, 0.52);
  border-radius: 10px;
  color: #e8f5f1;
  background: rgba(7, 28, 25, 0.98);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.42);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.6;
}

.public-beta-nav {
  display: flex;
  gap: 8px;
  margin: 22px 0;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
}

.public-beta-nav a {
  flex: 0 0 auto;
  padding: 8px 13px;
  border: 1px solid rgba(120, 190, 177, 0.25);
  border-radius: 999px;
  color: #cfe8e2;
  background: rgba(13, 38, 34, 0.75);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}

.public-beta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.public-beta-card {
  min-width: 0;
  padding: clamp(22px, 3.5vw, 36px);
  border: 1px solid rgba(190, 162, 91, 0.28);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(18, 34, 30, 0.92), rgba(15, 18, 15, 0.94));
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.22);
}

.public-beta-card-wide {
  grid-column: 1 / -1;
}

.public-beta-card h2 {
  font-size: clamp(21px, 3vw, 28px);
}

.public-beta-card h3 {
  margin: 0 0 10px;
  color: #d9c17f;
  font-size: 17px;
}

.public-beta-card p,
.public-beta-card ul,
.public-beta-card ol {
  margin-top: 0;
}

.public-beta-card li + li {
  margin-top: 7px;
}

.public-beta-note,
.public-beta-contact {
  margin: 18px 0 0 !important;
  padding: 12px 14px;
  border-left: 3px solid #7fc8bb;
  color: #d8e4df;
  background: rgba(63, 105, 91, 0.14);
}

.public-beta-contact {
  border-left-color: #d9b85f;
  color: #fff0bd;
  overflow-wrap: anywhere;
}

.public-beta-support-button {
  display: inline-flex;
  flex-direction: column;
  max-width: 100%;
  padding: 12px 18px;
  border: 1px solid #d9b85f;
  border-radius: 12px;
  color: #fff0bd;
  background: #203e32;
  font-weight: 800;
  text-decoration: none;
}

.public-beta-support-button span {
  margin-top: 3px;
  color: #cfe8e2;
  font-size: 11px;
  font-weight: 400;
}

.public-beta-support-button:hover,
.public-beta-support-button:focus-visible {
  background: #2c5242;
}

.public-beta-credit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.public-beta-changes {
  margin: 0;
}

.public-beta-changes div {
  display: grid;
  grid-template-columns: minmax(130px, 0.25fr) minmax(0, 1fr);
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid rgba(194, 164, 90, 0.2);
}

.public-beta-changes dt {
  color: #f1d887;
  font-weight: 900;
}

.public-beta-changes dd {
  margin: 0;
}

.public-beta-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding:
    24px
    max(24px, env(safe-area-inset-right))
    max(24px, env(safe-area-inset-bottom))
    max(24px, env(safe-area-inset-left));
  border-top: 1px solid rgba(205, 167, 81, 0.3);
  color: #9aa9a4;
  background: rgba(4, 13, 12, 0.82);
}

.public-beta-footer p {
  margin: 0;
  font-weight: 900;
}

@media (max-width: 720px) {
  html {
    scroll-padding-top: 84px;
  }

  .public-beta-header {
    min-height: 68px;
  }

  .public-beta-back {
    flex-basis: 44px;
    width: 44px;
    height: 44px;
    font-size: 27px;
  }

  .public-beta-header p {
    font-size: 9px;
  }

  .public-beta-main {
    width: min(100% - 20px, 620px);
    padding-top: 18px;
  }

  .public-beta-hero,
  .public-beta-grid,
  .public-beta-credit-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .public-beta-hero {
    gap: 22px;
    padding: 24px 20px;
    border-radius: 18px;
  }

  .public-beta-tip p {
    right: auto;
    left: 50%;
    width: min(310px, calc(100vw - 40px));
    transform: translateX(-50%);
  }

  .public-beta-card-wide {
    grid-column: auto;
  }

  .public-beta-card {
    padding: 22px 19px;
    border-radius: 15px;
  }

  .public-beta-card ul,
  .public-beta-card ol {
    padding-left: 1.35em;
  }

  .public-beta-changes div {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }
}

@media (max-width: 390px) {
  .public-beta-summary {
    grid-template-columns: minmax(0, 1fr);
  }

  .public-beta-header h1 {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}