@charset "UTF-8";

:root {
  --bg-top: #2f333c;
  --bg-mid: #25292f;
  --bg-bottom: #20242a;

  --blue: #003ec5;
  --blue-rgb: 0, 62, 197;
  --blue-deep: #00277a;
  --blue-bright: #5e86e8;
  --light: #ecf7f6;
  --gold-sub: #ab7e00;
  --gold-point: #c5930c;

  --max-w: 1440px;
  --pad-x: 56px;
  --radius-card: 26px;
  --radius-tile: 20px;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  background: linear-gradient(
    180deg,
    var(--bg-top) 0%,
    var(--bg-mid) 62%,
    var(--bg-bottom) 100%
  );
  color: var(--light);
  font-family: "Inter", "Zen Kaku Gothic New", sans-serif;
}

::selection {
  background: var(--blue-deep);
  color: var(--light);
}

.ambient-layer {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.ambient {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}
.ambient-blue {
  top: -160px;
  left: -120px;
  width: 620px;
  height: 620px;
  background: radial-gradient(
    circle,
    rgba(var(--blue-rgb), 0.2) 0%,
    rgba(var(--blue-rgb), 0) 68%
  );
}
.ambient-gold {
  right: -180px;
  bottom: -240px;
  width: 700px;
  height: 700px;
  background: radial-gradient(
    circle,
    rgba(171, 126, 0, 0.13) 0%,
    rgba(171, 126, 0, 0) 70%
  );
}
.ambient-white {
  inset: 0;
  border-radius: 0;
  background: radial-gradient(
    120% 80% at 50% 0%,
    rgba(255, 255, 255, 0.05) 0%,
    rgba(255, 255, 255, 0) 58%
  );
}

.header {
  position: relative;
  z-index: 2;
  width: 100%;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 93px;
  padding: 14px var(--pad-x);
}
.logo {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}
.logo-mark {
  position: relative;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
}
.logo-mark::before {
  content: "";
  position: absolute;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(var(--blue-rgb), 0.3) 0%,
    rgba(var(--blue-rgb), 0) 70%
  );
}
.logo-mark img {
  position: relative;
  height: 58px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 4px 7px rgba(0, 0, 0, 0.45));
}
.logo-text {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}
.logo-title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--light);
}
.logo-sub {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: rgba(236, 247, 246, 0.5);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 11px;
}
.nav-list img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

.main {
  position: relative;
  z-index: 2;
  flex: 1;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 46px var(--pad-x) 42px;
  display: flex;
  flex-direction: column;
  gap: 42px;
}

.intro {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 50px;
  padding: 38px 48px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-card);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.06) 0%,
    rgba(255, 255, 255, 0.022) 100%
  );
  box-shadow: 0 30px 64px -34px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.07);
}

.intro-watermark {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 54%;
  opacity: 0.24;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(140% 135% at 50% 48%, #000 60%, transparent 100%);
  mask-image: radial-gradient(140% 135% at 50% 48%, #000 60%, transparent 100%);
}
.intro-watermark-veil {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(
    120% 125% at 50% 50%,
    rgba(26, 29, 36, 0) 30%,
    rgba(26, 29, 36, 0.26) 68%,
    rgba(26, 29, 36, 0.55) 100%
  );
}

.intro-mascot {
  position: relative;
  z-index: 1;
  flex: 0 0 320px;
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mascot-halo {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(var(--blue-rgb), 0.3) 0%,
    rgba(var(--blue-rgb), 0) 66%
  );
  filter: blur(6px);
}
.mascot-ring {
  position: absolute;
  width: 268px;
  height: 268px;
  border-radius: 50%;
  border: 1px solid rgba(var(--blue-rgb), 0.35);
  box-shadow: 0 0 42px rgba(var(--blue-rgb), 0.18),
    inset 0 0 42px rgba(var(--blue-rgb), 0.1);
}
.mascot-floor {
  position: absolute;
  bottom: 30px;
  width: 236px;
  height: 34px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0) 70%);
  filter: blur(3px);
}
.mascot-img {
  position: relative;
  height: 352px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 18px 26px rgba(0, 0, 0, 0.45));
}

.intro-text {
  position: relative;
  z-index: 1;
  flex: 1;
  min-width: 0;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--gold-point);
}
.eyebrow .bar {
  width: 34px;
  height: 2px;
  border-radius: 2px;
  background: var(--blue);
}

.intro-title {
  margin-bottom: 18px;
  font-weight: 900;
  font-size: 44px;
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--light);
  text-shadow:
    0 -1px 1px rgba(255, 255, 255, 0.5),
    0 1px 0 #cfd6e0,
    0 2px 0 #b6bfcd,
    0 3px 0 #9ca6b8,
    0 4px 0 #828da4,
    0 5px 0 #6b7690,
    0 6px 0 #56617b,
    0 7px 2px rgba(0, 0, 0, 0.35),
    0 9px 9px rgba(0, 0, 0, 0.42),
    0 13px 20px rgba(0, 0, 0, 0.45);
}
.intro-title-sub {
  margin-left: 14px;
  font-family: "Inter", sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: rgba(236, 247, 246, 0.8);
  text-shadow: 0 1px 0 #8c97a8, 0 2px 0 #6c7789, 0 3px 5px rgba(0, 0, 0, 0.4);
}
.intro-role {
  margin-bottom: 22px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: rgba(236, 247, 246, 0.5);
}
.intro-body {
  max-width: 560px;
  font-size: 16.5px;
  line-height: 2.05;
  color: var(--light);
}
.intro-body + .intro-body {
  margin-top: 13px;
}
.intro-body strong {
  font-weight: 700;
  color: var(--light);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}
.eyebrow-wide {
  margin-bottom: 9px;
  font-family: "Inter", "Zen Kaku Gothic New", sans-serif;
  letter-spacing: 0.34em;
}
.section-title {
  font-weight: 900;
  font-size: 27px;
  letter-spacing: 0.02em;
  color: var(--light);
  text-shadow:
    0 -1px 0 rgba(255, 255, 255, 0.45),
    0 1px 0 #cfd6e0,
    0 2px 0 #aeb8c6,
    0 3px 0 #8c97aa,
    0 4px 0 #6b7690,
    0 5px 4px rgba(0, 0, 0, 0.38),
    0 7px 10px rgba(0, 0, 0, 0.4);
}
.section-lead {
  padding-bottom: 5px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: rgba(236, 247, 246, 0.62);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 26px 20px 22px;
  border: 1px solid rgba(var(--blue-rgb), 0.5);
  border-radius: var(--radius-tile);
  background: rgba(255, 255, 255, 0.02);
  transition: transform 0.25s ease, border-color 0.25s ease,
    background 0.25s ease, box-shadow 0.25s ease;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(var(--blue-rgb), 0.8);
  background: rgba(255, 255, 255, 0.045);
  box-shadow: 0 24px 42px -24px rgba(0, 0, 0, 0.7);
}
.card-icon img {
  width: 112px;
  height: 112px;
  object-fit: contain;
  border-radius: 50%;
  transition: background 0.28s ease, box-shadow 0.28s ease;
}
.card:hover .card-icon img {
  background: rgba(255, 255, 255, 0.085);
  box-shadow: 0 0 22px 6px rgba(255, 255, 255, 0.08);
}
.card-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--light);
}
.card-sub {
  font-size: 13px;
  letter-spacing: 0.03em;
  color: rgba(236, 247, 246, 0.62);
}

.footer {
  position: relative;
  z-index: 2;
  width: 100%;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  min-height: 124px;
  padding: 24px var(--pad-x);
}
.footer-nav {
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
  flex: 1;
}
.footer-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.footer-nav img {
  width: 56px;
  height: 56px;
  object-fit: contain;
}
.footer-nav span {
  font-size: 11px;
  letter-spacing: 0.04em;
  color: rgba(236, 247, 246, 0.66);
}
.footer-tagline {
  font-size: 14.5px;
  letter-spacing: 0.06em;
  color: var(--gold-point);
  white-space: nowrap;
}

@media (max-width: 1040px) {
  .main {
    padding: 38px 32px 40px;
    gap: 36px;
  }
  .intro {
    flex-direction: column;
    gap: 28px;
    padding: 36px 34px;
    text-align: center;
  }
  .intro-mascot {
    flex: 0 0 auto;
    height: 320px;
  }
  .mascot-img {
    height: 292px;
  }
  .intro-text {
    width: 100%;
  }
  .intro-body {
    max-width: none;
  }
  .intro-text .eyebrow {
    justify-content: center;
  }
}

@media (max-width: 680px) {
  .main {
    padding: 30px 22px 34px;
  }
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .main {
    padding: 24px 16px 30px;
    gap: 30px;
  }
  .header-inner {
    padding: 12px 18px;
  }
  .logo-title {
    font-size: 18px;
  }
  .intro {
    padding: 26px 16px;
    gap: 20px;
  }
  .intro-mascot {
    height: 250px;
  }
  .mascot-img {
    height: 228px;
  }
  .mascot-halo,
  .mascot-ring,
  .mascot-floor {
    transform: scale(0.7);
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .card-grid {
    gap: 12px;
  }
  .card {
    padding: 18px 10px 16px;
    gap: 10px;
    border-radius: 16px;
  }
  .card-icon img {
    width: 86px;
    height: 86px;
  }
  .card-title {
    font-size: 15.5px;
  }
  .card-sub {
    font-size: 12px;
  }
  .footer-inner {
    padding: 22px 18px;
  }
  .footer-nav {
    gap: 26px;
  }
}

/* ===== Scroll Fade-in（IntersectionObserver連動） ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}
/* カードはスタガー（順番にふわっと表示） */
.card.fade-in { transition-delay: 0s; }
.card-grid > li:nth-child(1) .card.fade-in { transition-delay: 0.05s; }
.card-grid > li:nth-child(2) .card.fade-in { transition-delay: 0.15s; }
.card-grid > li:nth-child(3) .card.fade-in { transition-delay: 0.25s; }
.card-grid > li:nth-child(4) .card.fade-in { transition-delay: 0.35s; }
.card-grid > li:nth-child(5) .card.fade-in { transition-delay: 0.45s; }
.card-grid > li:nth-child(6) .card.fade-in { transition-delay: 0.55s; }
/* モーション控えめ設定の人向け（OSアクセシビリティ） */
@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}