@font-face {
  font-family: "Glorantha Core Runes";
  src: url("./font/GloranthaCoreRunes1.5.woff2") format("woff2");
  font-display: swap;
}

:root {
  --bg: #07111f;
  --bg-deep: #040914;
  --panel: rgba(10, 21, 39, 0.82);
  --panel-strong: rgba(8, 18, 34, 0.94);
  --line: rgba(145, 210, 255, 0.16);
  --text: #edf4ff;
  --text-soft: #b5c8e7;
  --accent: #8ae1ff;
  --accent-strong: #4d99ff;
  --accent-warm: #ffc97f;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  --radius-xl: 32px;
  --radius-lg: 26px;
  --radius-md: 20px;
}

* {
  box-sizing: border-box;
  min-width: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Noto Sans JP", sans-serif;
  background:
    radial-gradient(circle at 15% 18%, rgba(102, 138, 255, 0.28), transparent 22%),
    radial-gradient(circle at 85% 12%, rgba(83, 231, 255, 0.2), transparent 20%),
    radial-gradient(circle at 50% 100%, rgba(255, 170, 101, 0.12), transparent 28%),
    linear-gradient(180deg, #040914 0%, #081426 38%, #0b1930 100%);
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 24px auto 40px;
}

.hero,
.section,
.footer {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 26px;
  background:
    linear-gradient(145deg, rgba(4, 10, 21, 0.96), rgba(8, 18, 34, 0.94) 45%, rgba(12, 28, 52, 0.88)),
    var(--bg-deep);
}

.hero__stars,
.hero__glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__stars {
  background-image:
    radial-gradient(circle at 12% 16%, rgba(255, 255, 255, 0.85) 0 1px, transparent 1.5px),
    radial-gradient(circle at 24% 74%, rgba(255, 255, 255, 0.4) 0 1px, transparent 1.5px),
    radial-gradient(circle at 79% 14%, rgba(255, 255, 255, 0.8) 0 1px, transparent 1.5px),
    radial-gradient(circle at 70% 36%, rgba(127, 220, 255, 0.76) 0 1px, transparent 1.5px),
    radial-gradient(circle at 58% 62%, rgba(255, 255, 255, 0.42) 0 1px, transparent 1.5px),
    radial-gradient(circle at 92% 76%, rgba(255, 255, 255, 0.72) 0 1px, transparent 1.5px);
  opacity: 0.75;
}

.hero__glow--left {
  background: radial-gradient(circle at 18% 24%, rgba(113, 118, 255, 0.24), transparent 28%);
}

.hero__glow--right {
  background: radial-gradient(circle at 84% 70%, rgba(82, 231, 255, 0.14), transparent 24%);
}

.topbar,
.hero__content,
.section,
.footer {
  position: relative;
  z-index: 1;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 34px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand__logo {
  width: 50px;
  height: 50px;
  object-fit: contain;
  border-radius: 16px;
}

.brand__copy {
  font-weight: 700;
  letter-spacing: 0.06em;
}

.language-switcher__select,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: 999px;
  border: 1px solid rgba(141, 209, 255, 0.2);
  background: rgba(138, 225, 255, 0.08);
}

.language-switcher__label {
  font-size: 0.92rem;
  font-weight: 700;
  color: #d7e8ff;
}

.language-switcher__select {
  min-width: 152px;
  padding: 0 16px;
  border: 1px solid rgba(145, 210, 255, 0.24);
  background: rgba(233, 243, 255, 0.96);
  color: #10233f;
  font: inherit;
}

.button:hover,
.text-link:hover {
  transform: translateY(-2px);
}

.hero__content {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 420px);
  gap: 36px;
  align-items: center;
}

.eyebrow,
.section__label,
.resource-card__tag,
.signal-card__label {
  margin: 0 0 10px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1,
.section h2,
.footer h2,
.signal-card h2 {
  margin: 0;
  font-family: "Cinzel", serif;
  letter-spacing: 0.04em;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5.8rem);
  line-height: 0.94;
}

.hero__lead {
  margin: 22px 0 16px;
  font-size: clamp(1.18rem, 2.3vw, 1.58rem);
  line-height: 1.8;
  font-weight: 700;
  color: #ffffff;
}

.hero__text,
.section__lead,
.summary-card p,
.feature-card p,
.step-card p,
.usecase-card p,
.resource-card p,
.footer p,
.video-copy p,
.signal-card p {
  color: var(--text-soft);
  line-height: 1.9;
}

.hero__text {
  margin: 0 0 14px;
  max-width: 64ch;
}

.hero__actions,
.footer__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.hero__links,
.howto-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 20px;
}

.button--primary {
  background: linear-gradient(135deg, #a7efff 0%, #5d9eff 100%);
  color: #061424;
}

.button--secondary {
  border: 1px solid rgba(145, 210, 255, 0.24);
  background: rgba(145, 210, 255, 0.08);
}

.button--ghost {
  border: 1px solid rgba(255, 201, 127, 0.28);
  background: rgba(255, 201, 127, 0.08);
  color: #ffe0b6;
}

.hero__panel {
  display: grid;
  gap: 24px;
}

.hero__icon-frame {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(126, 219, 255, 0.2), rgba(8, 18, 35, 0.02) 56%, transparent 70%),
    radial-gradient(circle, rgba(255, 180, 117, 0.16), transparent 72%);
  box-shadow:
    inset 0 0 50px rgba(92, 180, 255, 0.12),
    0 0 90px rgba(66, 122, 255, 0.14);
}

.hero__ring {
  position: absolute;
  border: 1px solid rgba(145, 217, 255, 0.3);
  border-radius: 50%;
}

.hero__ring--outer {
  inset: 14px;
}

.hero__ring--inner {
  inset: 48px;
  border-style: dashed;
}

.hero__icon {
  position: relative;
  z-index: 1;
  width: min(68%, 220px);
  filter: drop-shadow(0 18px 34px rgba(0, 0, 0, 0.42));
}

.signal-card,
.summary-card,
.feature-card,
.step-card,
.usecase-card,
.resource-card,
.video-copy {
  border: 1px solid rgba(145, 210, 255, 0.12);
  border-radius: var(--radius-lg);
  background: rgba(8, 18, 34, 0.62);
  box-shadow: inset 0 0 24px rgba(142, 199, 255, 0.04);
}

.signal-card {
  padding: 22px 24px;
}

.signal-card h2 {
  margin-bottom: 10px;
  font-size: 1.5rem;
}

.content {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

.section,
.footer {
  padding: 32px 30px;
  background: var(--panel);
  backdrop-filter: blur(10px);
}

.section--accent {
  background:
    radial-gradient(circle at 100% 0%, rgba(111, 198, 255, 0.14), transparent 28%),
    var(--panel);
}

.section__heading {
  margin-bottom: 22px;
}

.section__heading--wide {
  max-width: 72ch;
}

.section h2,
.footer h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.summary-grid,
.feature-grid,
.usecase-grid,
.resource-grid {
  display: grid;
  gap: 18px;
}

.summary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.usecase-grid,
.resource-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.summary-card,
.feature-card,
.usecase-card,
.resource-card {
  padding: 22px 22px 20px;
}

.summary-card h3,
.feature-card h3,
.step-card h3,
.usecase-card h3,
.resource-card h3 {
  margin: 0 0 10px;
  font-size: 1.14rem;
}

.summary-card p,
.feature-card p,
.step-card p,
.usecase-card p,
.resource-card p,
.video-copy p,
.footer p,
.signal-card p {
  margin: 0;
}

.video-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(250px, 0.75fr);
  gap: 20px;
  align-items: start;
}

.video-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #030914;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.32);
}

.video-frame::before {
  content: "";
  display: block;
  padding-top: 56.25%;
}

.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-copy {
  padding: 22px;
}

.text-link {
  display: inline-flex;
  margin-top: 16px;
  color: var(--accent);
  font-weight: 700;
  transition: transform 180ms ease;
}

.text-link--inline {
  margin-top: 0;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.step-card {
  padding: 24px 22px 20px;
}

.step-card__number {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(167, 239, 255, 0.22), rgba(93, 158, 255, 0.32));
  color: #ffffff;
  font-family: "Cinzel", serif;
  font-size: 1.3rem;
  font-weight: 700;
}

.resource-card {
  min-height: 180px;
}

.resource-card--primary {
  background:
    linear-gradient(180deg, rgba(74, 154, 255, 0.2), rgba(10, 21, 39, 0.74)),
    rgba(8, 18, 34, 0.62);
}

.footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 28px;
  align-items: center;
  margin-top: 28px;
}

.footer__copy {
  max-width: 60ch;
}

.footer__note {
  margin-top: 14px;
  font-size: 0.88rem;
  color: #9bb4d9;
}

.footer__qr {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: var(--panel-strong);
  border: 1px solid rgba(145, 210, 255, 0.12);
  text-align: center;
}

.footer__qr img {
  width: 100%;
  border-radius: 18px;
}

.footer__qr p {
  margin-top: 14px;
}

@media (max-width: 960px) {
  .hero__content,
  .video-layout,
  .footer,
  .summary-grid,
  .feature-grid,
  .steps,
  .usecase-grid,
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .hero__panel {
    max-width: 420px;
  }

  .footer {
    justify-items: start;
  }

  .footer__qr {
    max-width: 220px;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 20px, 1180px);
    margin: 10px auto 24px;
  }

  .hero,
  .section,
  .footer {
    border-radius: 24px;
  }

  .hero {
    padding: 20px;
  }

  .topbar {
    flex-direction: column;
    align-items: stretch;
    margin-bottom: 24px;
  }

  .brand {
    justify-content: center;
  }

  .language-switcher {
    justify-content: center;
  }

  .language-switcher__select {
    width: 100%;
  }

  .section,
  .footer {
    padding: 24px 20px;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 18vw, 4rem);
  }

  .hero__lead {
    font-size: 1.08rem;
  }

  .hero__actions,
  .footer__actions,
  .hero__links,
  .howto-links {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}