:root {
  --ink: #3f4945;
  --muted: #6f7975;
  --cream: #fffaf0;
  --paper: #fffef9;
  --mint: #bfe3d7;
  --teal: #69bfc0;
  --sky: #cfe7ec;
  --apricot: #f5c8a8;
  --coral: #ea8f78;
  --yellow: #f3cf74;
  --navy: #385877;
  --line: rgba(63, 73, 69, .14);
  --shadow: 0 20px 60px rgba(76, 92, 84, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans JP", sans-serif;
  line-height: 1.8;
}
a { color: inherit; }
img { max-width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 5vw, 76px);
  background: rgba(255, 254, 249, .92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.brand img { display: block; width: min(380px, 47vw); height: 58px; }
.nav { display: flex; gap: 30px; align-items: center; font-size: 14px; font-weight: 700; }
.nav a { text-decoration: none; }
.nav a:not(.nav-cta):hover { color: #438e8d; }
.nav-cta { padding: 10px 20px; border-radius: 999px; background: var(--yellow); }
.menu-button { display: none; border: 0; background: transparent; font: inherit; font-weight: 700; }

.hero {
  position: relative;
  min-height: calc(100vh - 82px);
  overflow: hidden;
  display: grid;
  align-items: center;
  background: #f9eedb;
}
.hero-image {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,250,240,.98) 0%, rgba(255,250,240,.92) 28%, rgba(255,250,240,.2) 57%, rgba(255,250,240,.04) 100%), url("assets/hero-classroom.png") center/cover no-repeat;
}
.hero-copy {
  position: relative;
  z-index: 2;
  width: min(640px, 90vw);
  margin-left: clamp(24px, 8vw, 130px);
  padding: 72px 0;
}
.eyebrow {
  margin: 0 0 12px;
  color: #4b9795;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .2em;
}
h1, h2, h3 { margin-top: 0; line-height: 1.35; }
h1 {
  margin-bottom: 24px;
  font-family: "Kiwi Maru", serif;
  font-size: clamp(42px, 5.4vw, 76px);
  font-weight: 500;
  letter-spacing: .04em;
}
h1 span { position: relative; }
h1 span::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: -4px;
  right: -4px;
  bottom: 7px;
  height: 17px;
  border-radius: 99px;
  background: rgba(243, 207, 116, .7);
}
.hero-lead { margin: 0 0 34px; font-size: clamp(16px, 1.5vw, 20px); font-weight: 500; }
.hero-actions { display: flex; align-items: center; gap: 26px; }
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 58px;
  padding: 0 30px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
  box-shadow: 0 9px 0 rgba(63,73,69,.09);
  transition: transform .2s, box-shadow .2s;
}
.button:hover { transform: translateY(-3px); box-shadow: 0 12px 0 rgba(63,73,69,.08); }
.button.primary { background: var(--coral); color: white; }
.text-link { font-weight: 800; text-decoration: none; border-bottom: 2px solid var(--yellow); }
.text-link span { margin-left: 6px; }
.hero-note {
  position: absolute;
  z-index: 3;
  right: 5vw;
  bottom: 4vw;
  width: 150px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  text-align: center;
  border-radius: 50% 44% 52% 43%;
  background: rgba(255,254,249,.92);
  font-family: "Kiwi Maru", serif;
  font-weight: 500;
  transform: rotate(5deg);
  box-shadow: var(--shadow);
}

.section { padding: 110px clamp(22px, 8vw, 130px); }
.section-heading { max-width: 720px; margin-bottom: 45px; }
.section-heading.centered { margin-inline: auto; text-align: center; }
.intro .section-heading { width: 100%; max-width: 1080px; }
.intro .section-heading h2 {
  white-space: nowrap;
  font-size: clamp(32px, 3.5vw, 50px);
}
.section-heading h2, .hosts-copy h2, .closing h2 {
  margin-bottom: 14px;
  font-family: "Kiwi Maru", serif;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 500;
}
.section-heading p:last-child { color: var(--muted); }

.intro { position: relative; background: var(--paper); }
.intro::before {
  content: "";
  position: absolute;
  left: 5%;
  top: 80px;
  width: 90px;
  height: 90px;
  opacity: .35;
  background-image: radial-gradient(var(--teal) 3px, transparent 3px);
  background-size: 18px 18px;
}
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; max-width: 1100px; margin: auto; }
.feature-card { min-height: 270px; padding: 38px; border-radius: 32px 32px 60px 32px; }
.feature-card.mint { background: #e8f5ee; }
.feature-card.apricot { background: #fdf0e3; transform: translateY(24px); }
.feature-card.blue { background: #eaf4f6; }
.feature-icon {
  width: 104px;
  height: 82px;
  display: block;
  margin: -10px 0 20px;
}
.feature-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.feature-card h3 { margin-bottom: 8px; font-size: 22px; }
.feature-card p { margin: 0; color: var(--muted); }

.schedule-section { background: #edf6f3; }
.filter-row { display: flex; gap: 10px; margin: -8px 0 30px; }
.filter {
  padding: 10px 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: white;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}
.filter.active { background: var(--ink); color: white; }
.schedule-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.event-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 430px;
  padding: 30px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.8);
  border-radius: 28px;
  background: white;
  box-shadow: 0 16px 45px rgba(73, 108, 96, .08);
  transition: transform .25s;
}
.event-card:hover { transform: translateY(-5px); }
.event-card::after {
  content: "";
  position: absolute;
  right: -24px;
  top: -28px;
  width: 115px;
  height: 115px;
  border-radius: 50%;
  background: var(--sky);
  opacity: .55;
}
.event-card.online::after { background: var(--apricot); }
.event-meta { display: flex; gap: 8px; margin-bottom: 28px; }
.tag { padding: 5px 12px; border-radius: 999px; background: #e9f4f4; font-size: 12px; font-weight: 800; }
.tag.online { background: #fdf0e3; }
.event-date { margin-bottom: 6px; font-family: "Kiwi Maru", serif; font-size: 28px; font-weight: 500; }
.event-time { color: #4b9795; font-weight: 800; }
.event-card h3 { margin: 28px 0 9px; font-size: 23px; }
.event-card p { margin: 0 0 18px; color: var(--muted); }
.event-place { margin-top: auto !important; padding-top: 20px; border-top: 1px dashed var(--line); font-size: 14px; }
.event-actions { display: flex; gap: 8px; margin-top: 18px; }
.event-actions a { flex: 1; padding: 11px 10px; border-radius: 12px; text-align: center; text-decoration: none; font-size: 13px; font-weight: 800; background: var(--coral); color: white; }
.event-actions a.calendar { background: #edf3f2; color: var(--ink); }
.schedule-note { margin-top: 30px; color: var(--muted); font-size: 13px; }

.voices-section { overflow: hidden; background: #fffaf0; }
.voice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; max-width: 1120px; margin: auto; }
.voice-card {
  margin: 0;
  padding: 38px;
  border: 1px solid #eee3d0;
  border-radius: 8px;
  background: white;
  box-shadow: var(--shadow);
}
.voice-card::before { content: "“"; color: var(--apricot); font-family: serif; font-size: 60px; line-height: .5; }
.voice-card blockquote { margin: 24px 0; font-family: "Kiwi Maru", serif; font-size: 18px; line-height: 2; }
.voice-card figcaption { color: var(--muted); font-size: 13px; }
.tilt-left { transform: rotate(-2deg); }
.tilt-right { transform: rotate(2deg); }
.main-voice { transform: translateY(-16px); }

.follow-section { background: white; }
.media-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.media-card {
  position: relative;
  min-height: 230px;
  padding: 32px;
  border-radius: 28px;
  text-decoration: none;
  transition: transform .2s;
}
.media-card:hover { transform: translateY(-5px) rotate(-.5deg); }
.media-card.threads { background: #eef1ef; }
.media-card.standfm { background: #e5f3f3; }
.media-card.substack { background: #fff0e5; }
.media-label { display: block; margin-bottom: 36px; font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.media-card strong { font-size: 25px; }
.media-card p { color: var(--muted); }
.media-card .arrow { position: absolute; right: 28px; bottom: 25px; font-size: 28px; }

.hosts-section { display: grid; grid-template-columns: .85fr 1.15fr; align-items: center; gap: 60px; background: #eaf4f6; }
.hosts-copy p:not(.eyebrow) { color: var(--muted); }
.host-portraits { position: relative; min-height: 570px; }
.portrait { position: absolute; border: 10px solid white; border-radius: 48% 48% 45% 45%; background-repeat: no-repeat; box-shadow: var(--shadow); }
.portrait.bird {
  top: 0; right: 0; width: 64%; aspect-ratio: 1;
  background-image: url("assets/irodori-sensei.png");
  background-position: center;
  background-size: cover;
}
.portrait.hedgehog {
  left: 0; bottom: 0; width: 53%; aspect-ratio: 1;
  background-image: url("assets/maruru-portrait.png");
  background-position: center;
  background-size: cover;
}
.doodle {
  position: absolute;
  right: 8%;
  bottom: 5%;
  padding: 20px;
  border-radius: 50%;
  background: var(--yellow);
  font-family: "Kiwi Maru", serif;
  text-align: center;
  transform: rotate(7deg);
}

.closing {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  padding: 80px clamp(22px, 8vw, 130px);
  background: var(--navy);
  color: white;
}
.closing .eyebrow { color: var(--mint); }
.closing h2 { margin-bottom: 0; }

footer { padding: 54px clamp(22px, 8vw, 130px); text-align: center; background: #fffaf0; }
footer img { width: min(420px, 90%); height: 84px; }
footer p { color: var(--muted); }
footer small { color: #89918e; }

@media (max-width: 900px) {
  .intro .section-heading h2 {
    white-space: normal;
    font-size: clamp(30px, 6vw, 42px);
  }
  .nav {
    position: absolute;
    top: 82px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    background: var(--paper);
    box-shadow: var(--shadow);
  }
  .nav.open { display: flex; }
  .menu-button { display: block; }
  .hero { min-height: 820px; align-items: end; }
  .hero-image { background: linear-gradient(0deg, #fffaf0 0%, rgba(255,250,240,.97) 33%, rgba(255,250,240,.15) 65%), url("assets/hero-classroom.png") 64% top/auto 63% no-repeat; }
  .hero-copy { margin: 0 auto; padding: 410px 0 65px; }
  .hero-note { top: 310px; right: 5%; bottom: auto; width: 120px; font-size: 13px; }
  .feature-grid, .schedule-grid, .media-grid { grid-template-columns: 1fr; }
  .feature-card.apricot { transform: none; }
  .voice-grid { grid-template-columns: 1fr; }
  .voice-card, .main-voice { transform: none; }
  .hosts-section { grid-template-columns: 1fr; }
  .host-portraits { min-height: 520px; }
}

@media (max-width: 560px) {
  .site-header { height: 70px; padding-inline: 16px; }
  .brand img { width: 250px; height: 48px; }
  .nav { top: 70px; }
  .hero { min-height: 760px; }
  .hero-copy { width: calc(100% - 40px); padding-top: 365px; }
  h1 { font-size: 39px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .hero-note { top: 285px; }
  .section { padding: 78px 20px; }
  .schedule-grid { gap: 15px; }
  .event-card { min-height: 410px; padding: 24px; }
  .event-actions { flex-direction: column; }
  .host-portraits { min-height: 390px; }
  .closing { align-items: flex-start; flex-direction: column; padding: 64px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}