:root {
  --color-red: #C91D32;
  --color-orange: #F2A312;
  --color-yellow: #F5B51B;
  --color-green: #1E963F;
  --color-blue: #00518A;
  --color-navy: #173764;
  --color-pink: #D41473;
  --color-white: #FFFFFF;
  --color-black: #111111;
  --color-cream: #FFFDF7;

  --text: var(--color-black);
  --muted: #535a67;
  --line: rgba(23, 55, 100, 0.13);
  --shadow: 0 22px 60px rgba(23, 55, 100, 0.13);
  --content: min(1280px, calc(100% - 48px));
  --header-height: 84px;
  --section-radius: 32px;
  --card-radius: 24px;
  --font-main: "Hiragino Maru Gothic ProN", "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  background: var(--color-white);
  overflow-x: hidden;
}

body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-main);
  font-weight: 700;
  line-height: 1.8;
  letter-spacing: 0;
  background: var(--color-white);
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

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

[hidden] {
  display: none !important;
}

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

button {
  font: inherit;
}

p,
h1,
h2,
h3,
figure {
  margin-top: 0;
}

p:last-child {
  margin-bottom: 0;
}

h2 {
  margin-bottom: 1rem;
  color: var(--text);
  font-size: 2.6rem;
  line-height: 1.28;
  font-weight: 900;
  text-shadow: 0.018em 0 currentColor;
}

h3 {
  line-height: 1.45;
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1000;
  transform: translateY(-160%);
  border-radius: 999px;
  padding: 0.65rem 1rem;
  color: var(--color-white);
  background: var(--color-navy);
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 4px solid rgba(242, 163, 18, 0.72);
  outline-offset: 4px;
}

main {
  width: var(--content);
  margin: 0 auto;
}

section[id] {
  scroll-margin-top: 0;
}

.pc-only {
  display: inline;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 1px 0 rgba(23, 55, 100, 0.08), 0 10px 26px rgba(23, 55, 100, 0.08);
  backdrop-filter: blur(16px);
}

.header-inner {
  width: min(1360px, calc(100% - 40px));
  min-height: var(--header-height);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
}

.header-logo {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  width: min(290px, 44vw);
}

.header-logo img {
  width: 100%;
  height: auto;
}

.global-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1.2rem;
  color: var(--color-black);
  font-size: 0.98rem;
  font-weight: 900;
  text-shadow: 0.01em 0 currentColor;
  white-space: nowrap;
}

.global-nav a {
  min-height: 2.8rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 1.1rem;
  transition: color 160ms ease, background 160ms ease, transform 160ms ease;
}

.global-nav a:hover,
.global-nav a:focus-visible {
  color: var(--color-pink);
  background: rgba(212, 20, 115, 0.08);
  transform: translateY(-1px);
}

.global-nav .nav-contact {
  color: var(--color-white);
  background: var(--color-pink);
}

.global-nav .nav-contact:hover,
.global-nav .nav-contact:focus-visible {
  color: var(--color-white);
  background: #b90f62;
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 50%;
  color: var(--color-white);
  background: var(--color-navy);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle[aria-expanded="true"] span {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"]::before {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"]::after {
  transform: translateY(-7px) rotate(-45deg);
}

/* Shared buttons and decorations */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-height: 3.5rem;
  border: 2px solid transparent;
  border-radius: 999px;
  padding: 0.8rem 1.75rem;
  font-weight: 900;
  line-height: 1.25;
  text-align: center;
  box-shadow: 0 16px 28px rgba(23, 55, 100, 0.14);
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 20px 34px rgba(23, 55, 100, 0.18);
}

.button-blue {
  color: var(--color-white);
  background: var(--color-blue);
}

.button-pink {
  color: var(--color-white);
  background: var(--color-pink);
}

.button-outline-blue {
  color: var(--color-blue);
  border-color: var(--color-blue);
  background: var(--color-white);
}

.button-outline-pink {
  color: var(--color-pink);
  border-color: var(--color-pink);
  background: var(--color-white);
}

.shape,
.stripe-circle,
.dot-grid,
.sparkle,
.accent-lines {
  position: absolute;
  z-index: 0;
  pointer-events: none;
}

.shape {
  border-radius: 999px;
}

.shape-red { background: var(--color-red); }
.shape-orange { background: var(--color-orange); }
.shape-yellow { background: var(--color-yellow); }
.shape-green { background: var(--color-green); }
.shape-blue { background: var(--color-blue); }
.shape-pink { background: var(--color-pink); }

.stripe-circle {
  border-radius: 50%;
  background: repeating-linear-gradient(135deg, var(--color-blue) 0 0.32rem, transparent 0.32rem 0.66rem);
}

.dot-grid {
  width: 7rem;
  height: 5rem;
  background-image: radial-gradient(var(--color-orange) 0.13rem, transparent 0.15rem);
  background-size: 1rem 1rem;
}

.sparkle {
  width: 2.5rem;
  height: 2.5rem;
}

.sparkle::before,
.sparkle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0.28rem;
  height: 2.2rem;
  border-radius: 999px;
  background: var(--color-pink);
  transform: translate(-50%, -50%);
}

.sparkle::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.accent-lines {
  width: 4rem;
  height: 2.6rem;
  background:
    linear-gradient(70deg, transparent 44%, var(--color-yellow) 45% 55%, transparent 56%) left top / 1rem 2.2rem no-repeat,
    linear-gradient(100deg, transparent 44%, var(--color-yellow) 45% 55%, transparent 56%) center / 1rem 2.2rem no-repeat,
    linear-gradient(120deg, transparent 44%, var(--color-yellow) 45% 55%, transparent 56%) right bottom / 1rem 2.2rem no-repeat;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  width: max-content;
  max-width: 100%;
  min-height: 2rem;
  margin: 0 0 0.7rem;
  border-radius: 999px;
  padding: 0 0.9rem;
  color: var(--color-pink);
  background: rgba(212, 20, 115, 0.08);
  font-size: 0.82rem;
  font-weight: 900;
}

.eyebrow::before {
  content: "";
  width: 2rem;
  height: 0.52rem;
  flex: 0 0 auto;
  background:
    radial-gradient(circle at 0.26rem 50%, var(--color-pink) 0 0.26rem, transparent 0.27rem),
    radial-gradient(circle at 1rem 50%, var(--color-yellow) 0 0.26rem, transparent 0.27rem),
    radial-gradient(circle at 1.74rem 50%, var(--color-green) 0 0.26rem, transparent 0.27rem);
}

.section {
  position: relative;
  isolation: isolate;
  margin: 1.25rem 0;
  border-radius: var(--section-radius);
  padding: clamp(2rem, 5vw, 3.6rem);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.section > * {
  position: relative;
  z-index: 1;
}

/* Hero */
.hero {
  position: relative;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  padding: var(--header-height) 0 2.2rem;
  isolation: isolate;
  overflow: hidden;
}

.hero-frame {
  position: relative;
  width: 100%;
  height: calc((100vw + 126px) * 630 / 1406);
  container-type: inline-size;
  overflow: hidden;
}

.hero-frame-picture {
  display: contents;
}

.hero-frame-image {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 0;
  width: calc(100vw + 126px);
  height: auto;
  max-width: none;
  object-fit: contain;
  transform: translateX(-50%);
}

@media (min-width: 1280px) {
  .hero-frame {
    height: clamp(630px, calc(100vw * 630 / 1406), 675px);
  }

  .hero-frame-image {
    left: 50%;
    width: clamp(1406px, 100vw, 1506px);
    height: auto;
    max-width: none;
    object-fit: contain;
    transform: translateX(-50%);
  }
}

.hero-copy {
  position: absolute;
  inset: 19% 13% 14%;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-kicker {
  margin-bottom: 0.85rem;
  color: var(--color-black);
  font-size: clamp(1.5rem, 2.9vw, 2.35rem);
  line-height: 1.35;
  font-weight: 900;
}

.hero-logo {
  margin: 0 auto 1.15rem;
}

.hero-logo img {
  width: min(520px, 88vw);
  height: auto;
  margin: 0 auto;
}

.hero-lead {
  max-width: 48rem;
  margin: 0 auto 1.7rem;
  color: var(--color-black);
  font-size: 1rem;
}

.hero-lead span {
  display: block;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

@supports (width: 1cqw) {
  .hero-logo {
    margin-bottom: min(1.55cqw, 19.8px);
  }

  .hero-logo img {
    width: min(43cqw, 550px);
    max-width: none;
  }

  .hero-lead {
    max-width: min(56cqw, 717px);
    margin-bottom: min(2.1cqw, 26.9px);
    font-size: min(1.34cqw, 17.2px);
  }

  .hero-actions {
    gap: min(1.15cqw, 14.7px);
  }

  .hero-actions .button {
    min-height: min(4.55cqw, 58.2px);
    border-width: min(max(1px, 0.16cqw), 2px);
    padding: min(0.8cqw, 10.2px) min(2.05cqw, 26.2px);
    gap: min(0.8cqw, 10.2px);
    font-size: min(1.32cqw, 16.9px);
    box-shadow: 0 min(1.35cqw, 17.3px) min(2.35cqw, 30.1px) rgba(23, 55, 100, 0.14);
  }
}

/* About */
.section-about {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: clamp(1.6rem, 4vw, 3rem);
  background: var(--color-white);
}

.about-copy {
  max-width: 56rem;
}

.about-copy p {
  color: var(--color-black);
}

.about-cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.mini-card {
  min-height: 13.4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  border: 1px solid rgba(23, 55, 100, 0.08);
  border-radius: var(--card-radius);
  padding: 1.25rem 1rem;
  text-align: center;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 14px 28px rgba(23, 55, 100, 0.07);
}

.mini-card h3 {
  margin: 0.65rem 0 0.35rem;
  color: var(--color-pink);
  font-size: 0.98rem;
  font-weight: 900;
}

.mini-card:nth-child(2) h3 {
  color: var(--color-orange);
}

.mini-card:nth-child(3) h3 {
  color: var(--color-blue);
}

.mini-card:nth-child(4) h3 {
  color: var(--color-green);
}

.mini-card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
}

.mini-illust {
  width: 100%;
  height: 6.8rem;
  margin: 0 0 0.45rem;
  object-fit: contain;
}

.mini-icon {
  position: relative;
  width: 5.2rem;
  height: 4.8rem;
  flex: 0 0 auto;
}

.icon-people::before,
.icon-people::after {
  content: "";
  position: absolute;
  top: 0.8rem;
  width: 1.9rem;
  height: 1.9rem;
  border: 0.18rem solid var(--color-black);
  border-radius: 50%;
  background: #ffdc75;
}

.icon-people::before {
  left: 0.55rem;
}

.icon-people::after {
  right: 0.55rem;
}

.icon-people {
  background:
    radial-gradient(circle at 34% 74%, transparent 0 1.32rem, var(--color-black) 1.34rem 1.48rem, transparent 1.5rem),
    radial-gradient(circle at 67% 74%, transparent 0 1.32rem, var(--color-black) 1.34rem 1.48rem, transparent 1.5rem);
}

.icon-shop {
  margin-top: 0.8rem;
  height: 4rem;
  border: 0.18rem solid var(--color-black);
  border-top: 0;
  border-radius: 0 0 0.35rem 0.35rem;
  background:
    linear-gradient(90deg, transparent 36%, var(--color-black) 36% 41%, transparent 41%),
    linear-gradient(180deg, transparent 0 50%, rgba(0, 81, 138, 0.15) 51% 100%);
}

.icon-shop::before {
  content: "";
  position: absolute;
  left: -0.25rem;
  right: -0.25rem;
  top: -1rem;
  height: 1.3rem;
  border: 0.18rem solid var(--color-black);
  border-radius: 0.45rem 0.45rem 0.1rem 0.1rem;
  background: repeating-linear-gradient(90deg, var(--color-yellow) 0 1rem, var(--color-orange) 1rem 2rem);
}

.icon-art {
  background:
    radial-gradient(circle at 24% 42%, transparent 0 1.55rem, var(--color-black) 1.57rem 1.72rem, transparent 1.74rem),
    radial-gradient(circle at 21% 34%, var(--color-red) 0 0.2rem, transparent 0.22rem),
    radial-gradient(circle at 34% 44%, var(--color-yellow) 0 0.2rem, transparent 0.22rem),
    radial-gradient(circle at 23% 56%, var(--color-green) 0 0.2rem, transparent 0.22rem);
}

.icon-art::after {
  content: "";
  position: absolute;
  right: 0.2rem;
  top: 0.72rem;
  width: 2.45rem;
  height: 3.05rem;
  border: 0.18rem solid var(--color-black);
  background:
    linear-gradient(135deg, transparent 50%, rgba(30, 150, 63, 0.3) 51% 63%, transparent 64%),
    linear-gradient(45deg, transparent 52%, rgba(0, 81, 138, 0.28) 53% 64%, transparent 65%),
    #fff8d9;
}

.icon-flag {
  background:
    linear-gradient(160deg, transparent 47%, var(--color-black) 48% 51%, transparent 52%) center 1.8rem / 5.2rem 2rem no-repeat;
}

.icon-flag::before {
  content: "";
  position: absolute;
  inset: 1.2rem 0.4rem auto;
  height: 2.5rem;
  background:
    conic-gradient(from 120deg at 50% 20%, var(--color-green) 0 60deg, transparent 61deg) 0.4rem 0.55rem / 1.1rem 1.1rem no-repeat,
    conic-gradient(from 120deg at 50% 20%, var(--color-yellow) 0 60deg, transparent 61deg) 2.15rem 0.12rem / 1.1rem 1.1rem no-repeat,
    conic-gradient(from 120deg at 50% 20%, var(--color-blue) 0 60deg, transparent 61deg) 3.9rem 0.62rem / 1.1rem 1.1rem no-repeat;
}

/* Activities */
.section-activities {
  background: var(--color-white);
}

.section-head {
  display: block;
  width: 100%;
  margin-bottom: 1.7rem;
}

.section-head > div {
  width: 100%;
}

.section-head p:not(.eyebrow) {
  max-width: none;
  margin-bottom: 0;
}

.update-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.1rem;
  border-radius: 999px;
  padding: 0 1rem;
  color: var(--color-navy);
  background: var(--color-yellow);
  font-size: 0.82rem;
  font-weight: 900;
  white-space: nowrap;
}

.activity-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.05rem;
}

.activity-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-radius: var(--card-radius);
  background: var(--color-white);
  box-shadow: 0 16px 30px rgba(23, 55, 100, 0.1);
  overflow: hidden;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.activity-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 42px rgba(23, 55, 100, 0.15);
}

.activity-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.activity-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 280ms ease;
}

.activity-card:hover .activity-image img {
  transform: scale(1.04);
}

.activity-category {
  position: absolute;
  left: 0.8rem;
  top: 0.8rem;
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  border-radius: 999px;
  padding: 0 0.8rem;
  color: var(--color-white);
  background: var(--color-blue);
  font-size: 0.78rem;
  font-weight: 900;
  box-shadow: none;
}

.activity-category[data-category="地域連携"] {
  background: var(--color-green);
}

.activity-category[data-category="ワークショップ"] {
  background: var(--color-pink);
}

.activity-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1rem;
}

.activity-body h3 {
  margin-bottom: 0.45rem;
  color: var(--color-navy);
  font-size: 1rem;
  font-weight: 900;
}

.activity-body p {
  margin-bottom: 0;
  color: #2d3340;
  font-size: 0.86rem;
  line-height: 1.68;
}

.more-wrap {
  display: flex;
  justify-content: center;
  margin-top: 1.8rem;
}

.is-hidden {
  display: none;
}

.activity-card[hidden] {
  display: none !important;
}

/* Signal */
.section-signal {
  display: grid;
  grid-template-columns: minmax(280px, 0.86fr) minmax(360px, 1.14fr);
  align-items: center;
  gap: 2.2rem;
  padding: 3rem;
  background: var(--color-white);
}

.signal-sub {
  margin: 0 0 0.4rem;
  color: var(--color-navy);
  font-size: 1.05rem;
  font-weight: 900;
}

.signal-copy h2 {
  color: var(--text);
}

.signal-photo {
  margin: 0;
  border: 0;
  border-radius: 28px;
  box-shadow: none;
  overflow: hidden;
}

.signal-photo img {
  width: 100%;
  aspect-ratio: 1.45 / 1;
  object-fit: cover;
}

.signal-pink {
  right: -3rem;
  bottom: -3rem;
  width: 10rem;
  height: 10rem;
}

.signal-yellow {
  left: 44%;
  bottom: 2rem;
  width: 5rem;
  height: 5rem;
}

.signal-stripe {
  left: 48%;
  top: 38%;
  width: 3.4rem;
  height: 3.4rem;
  background: repeating-linear-gradient(135deg, var(--color-blue) 0 0.28rem, transparent 0.28rem 0.58rem);
}

.signal-sparkle {
  left: 5%;
  top: 16%;
}

/* JOIN */
.section-join {
  display: grid;
  grid-template-columns: minmax(300px, 0.95fr) minmax(420px, 1.1fr);
  grid-template-areas:
    "media copy"
    "links links";
  align-items: center;
  gap: 2rem;
  background: var(--color-white);
}

.join-media {
  grid-area: media;
  display: grid;
  gap: 1rem;
  place-items: center;
}

.join-photo {
  margin: 0;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: none;
}

.join-photo img {
  width: 100%;
  aspect-ratio: 1.25 / 0.82;
  object-fit: cover;
  background: var(--color-white);
}

.join-building-photo img {
  aspect-ratio: 1.55 / 0.78;
  object-fit: contain;
}

.join-copy {
  grid-area: copy;
}

.lead-strong {
  color: var(--color-black);
  font-weight: 900;
}

.join-links {
  grid-area: links;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  width: 100%;
  margin: 0 auto;
}

.link-button {
  --link-color: var(--color-blue);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  min-width: min(100%, 16rem);
  min-height: 3.6rem;
  border: 2px solid var(--link-color);
  border-radius: 999px;
  padding: 0.7rem 1.4rem;
  color: var(--link-color);
  background: var(--color-white);
  font-weight: 900;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.link-button:hover,
.link-button:focus-visible {
  transform: translateY(-2px);
  background: rgba(0, 81, 138, 0.05);
  box-shadow: 0 12px 22px rgba(23, 55, 100, 0.1);
}

.link-button-blue {
  --link-color: var(--color-blue);
}

.link-button-pink {
  --link-color: var(--color-pink);
}

.link-button-pink:hover,
.link-button-pink:focus-visible {
  background: rgba(212, 20, 115, 0.05);
}

.link-icon {
  width: 2rem;
  height: 2rem;
  flex: 0 0 auto;
  color: var(--link-color);
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Contact CTA */
.section-contact {
  display: block;
  min-height: auto;
  padding: 3rem 2rem 2.4rem;
  text-align: center;
  background: var(--color-white);
}

.contact-frame {
  position: absolute;
  z-index: 0;
  pointer-events: none;
  user-select: none;
}

.contact-frame-left-top {
  top: 0;
  left: 0;
  width: min(31vw, 330px);
}

.contact-frame-right-top {
  top: 0.4rem;
  right: -0.8rem;
  width: min(42vw, 500px);
}

.contact-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(110px, 0.2fr) minmax(480px, 1.6fr) minmax(110px, 0.2fr);
  align-items: end;
  gap: clamp(1rem, 3vw, 2rem);
  width: 100%;
  min-height: 17rem;
}

.contact-person {
  width: min(100%, 200px);
  align-self: end;
  filter: drop-shadow(0 18px 24px rgba(23, 55, 100, 0.08));
}

.contact-person-left {
  justify-self: start;
}

.contact-person-right {
  justify-self: end;
}

.contact-copy {
  align-self: center;
  justify-self: center;
  max-width: 68rem;
}

.contact-copy h2 {
  color: var(--color-black);
}

.contact-copy h2 span {
  display: inline-block;
  color: inherit;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.4rem;
}

.contact-green {
  right: -4.5rem;
  bottom: -4.5rem;
  width: 11rem;
  height: 11rem;
}

.contact-red {
  left: -3rem;
  top: -3rem;
  width: 8rem;
  height: 8rem;
}

.contact-stripe {
  left: -1.4rem;
  bottom: -1.4rem;
  width: 4.2rem;
  height: 4.2rem;
  background: repeating-linear-gradient(135deg, var(--color-green) 0 0.28rem, transparent 0.28rem 0.58rem);
}

/* Footer */
.site-footer {
  position: relative;
  width: var(--content);
  margin: 0 auto;
  padding: 2.2rem 0;
  overflow: hidden;
}

.footer-inner {
  display: grid;
  grid-template-columns: 190px minmax(240px, 1fr);
  align-items: center;
  gap: 2rem;
}

.footer-brand img {
  width: 180px;
  height: auto;
}

.copyright {
  color: var(--muted);
}

/* Responsive */
@media (max-width: 1080px) {
  h2 {
    font-size: 2.25rem;
  }

  .global-nav {
    font-size: 0.82rem;
  }

  .global-nav a {
    padding: 0 0.7rem;
  }

  .section-about,
  .section-signal,
  .section-join {
    grid-template-columns: 1fr;
  }

  .section-join {
    grid-template-areas:
      "media"
      "copy"
      "links";
  }

  .join-media {
    grid-template-columns: minmax(240px, 1fr);
    align-items: stretch;
    max-width: 620px;
    width: 100%;
    margin: 0 auto;
  }

  .about-copy,
  .about-cards {
    grid-column: auto;
    grid-row: auto;
  }

  .about-cards,
  .activity-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .signal-photo,
  .join-photo {
    max-width: 760px;
    width: 100%;
    margin: 0 auto;
  }

  .join-media .join-photo {
    max-width: none;
  }
}

@media (max-width: 860px) {
  :root {
    --content: calc(100% - 24px);
    --header-height: 70px;
    --section-radius: 26px;
  }

  .header-inner {
    width: calc(100% - 24px);
  }

  .header-logo {
    width: min(220px, 58vw);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .global-nav {
    position: fixed;
    top: var(--header-height);
    left: 50%;
    right: auto;
    width: min(calc(100% - 24px), 420px);
    display: grid;
    justify-content: stretch;
    justify-items: stretch;
    gap: 0.25rem;
    border: 1px solid rgba(23, 55, 100, 0.1);
    border-radius: 22px;
    padding: 0.8rem;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 18px 40px rgba(23, 55, 100, 0.16);
    transform: translate(-50%, -12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .global-nav.is-open {
    transform: translate(-50%, 0);
    opacity: 1;
    pointer-events: auto;
  }

  .global-nav a {
    width: 100%;
    justify-content: center;
    min-height: 3rem;
    padding: 0 1rem;
  }

  .global-nav .nav-contact {
    justify-content: center;
  }

  .contact-actions {
    display: grid;
    gap: 0.8rem;
  }

  .contact-actions .button {
    width: 100%;
  }

  .pc-only {
    display: none;
  }

  .section {
    padding: 2rem 1rem;
  }

  .section-head {
    display: block;
  }

  .contact-layout {
    grid-template-columns: minmax(80px, 0.16fr) minmax(0, 1.68fr) minmax(80px, 0.16fr);
    gap: 0.7rem;
    min-height: 16rem;
  }

  .contact-person {
    width: min(100%, 150px);
  }

  .contact-frame-left-top {
    width: 13rem;
  }

  .contact-frame-right-top {
    width: 18rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

@media (max-width: 489px) {
  .hero {
    padding: var(--header-height) 0 1.2rem;
  }

  .hero-frame {
    height: min(calc(100vw * 555 / 490), 555px);
    aspect-ratio: auto;
  }

  .hero-frame-image {
    position: absolute;
    display: block;
    top: 0;
    left: 50%;
    width: min(100vw, 490px);
    height: auto;
    object-fit: contain;
    transform: translateX(-50%);
  }

  .hero-copy {
    position: absolute;
    inset: 13% auto 7%;
    left: 50%;
    width: min(82vw, 390px);
    padding: 0;
    transform: translateX(-50%);
  }

  .hero-logo {
    margin-bottom: 1.15rem;
  }

  .hero-logo img {
    width: min(286px, 74vw);
  }

  .hero-lead {
    max-width: 100%;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    line-height: 1.65;
  }

  .hero-actions {
    display: grid;
    gap: 0.8rem;
    width: min(20rem, 100%);
    margin: 0 auto;
  }

  .hero-actions .button {
    width: 100%;
    min-height: 3.15rem;
    border-width: 2px;
    padding: 0.68rem 1.45rem;
    gap: 0.75rem;
    font-size: 0.95rem;
    box-shadow: 0 16px 28px rgba(23, 55, 100, 0.14);
  }
}

@media (max-width: 700px) {
  .contact-layout {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 1rem;
  }

  .contact-person {
    width: min(38vw, 160px);
  }

  .contact-person-left {
    justify-self: start;
    order: 1;
  }

  .contact-copy {
    order: 2;
    max-width: 100%;
  }

  .contact-person-right {
    justify-self: end;
    order: 3;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 0.95rem;
  }

  h2 {
    font-size: 1.9rem;
  }

  .about-cards,
  .activity-grid {
    grid-template-columns: 1fr;
  }

  .mini-card {
    min-height: auto;
  }

  .mini-illust {
    height: 7.6rem;
  }

  .section-contact {
    padding: 2.6rem 1rem 2.1rem;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 1rem;
  }

  .contact-person {
    width: min(58vw, 180px);
  }

  .contact-frame-left-top {
    width: 12rem;
  }

  .contact-frame-right-top {
    width: 16rem;
  }

  .join-media {
    grid-template-columns: 1fr;
  }

  .join-links {
    align-items: stretch;
    flex-direction: column;
  }

  .activity-card {
    border-radius: 20px;
  }

  .link-button {
    width: 100%;
  }

  .join-photo {
    border-radius: 24px;
  }

  .signal-photo {
    border-radius: 24px;
  }

  .signal-photo img,
  .join-photo img {
    aspect-ratio: 1.18 / 1;
  }

  .site-footer {
    padding: 2rem 0;
  }

}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}