:root{
  --ink:#f4eefb; --ink-soft:#c9bae3;
  --paper:#241c3f; --paper-card:#332a58;
  --sprout:#2e9c52; --sprout-deep:#57d98d; --lime:#c4e84a;
  --rule:rgba(244,238,251,0.14);
  --shadow:0 18px 40px -22px rgba(0,0,0,0.55);
  --twilight-deep:#2d2657; --twilight:#4b3f7d; --plum:#9b7cc4; --lilac:#c9b8e8; --star:#fdf8ef;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans JP",sans-serif;background:var(--paper);color:var(--ink);
  line-height:1.8;-webkit-font-smoothing:antialiased}
.wrap{max-width:920px;margin:0 auto;padding:0 24px}

/* ── header ── */
.site-header{position:sticky;top:0;z-index:30;background:rgba(36,28,63,0.82);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:9px;font-family:"Zen Kaku Gothic New",sans-serif;
  font-weight:900;letter-spacing:0.16em;font-size:17px;color:var(--ink);text-decoration:none}
.brand .seed{width:18px;height:18px}
.nav-link{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:500;font-size:14px;
  letter-spacing:0.05em;color:var(--ink-soft);text-decoration:none;padding:8px 14px;
  border-radius:999px;transition:background .2s,color .2s}
.nav-link:hover{background:rgba(46,156,82,0.1);color:var(--sprout-deep)}

/* ── hero ── */
.hero{position:relative;overflow:hidden;min-height:clamp(560px,92vh,860px);display:flex;align-items:center}
.hero-sprout{position:absolute;right:3%;bottom:0;z-index:0;pointer-events:none;
  width:clamp(280px,38vw,540px);display:flex;align-items:flex-end;justify-content:center}
.hero-sprout svg{width:100%;height:auto;display:block}
.hero::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(ellipse 55% 65% at 84% 72%, rgba(123,94,163,0.28), transparent 70%),
    linear-gradient(90deg, var(--paper) 0%, rgba(36,28,63,0.7) 34%, rgba(36,28,63,0) 64%),
    linear-gradient(0deg, var(--paper) 0%, rgba(36,28,63,0) 30%)}
.hero::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:
    radial-gradient(2.4px 2.4px at 88% 6%, var(--star), transparent),
    radial-gradient(1px 1px at 58% 14%, var(--star), transparent),
    radial-gradient(1.6px 1.6px at 78% 16%, var(--star), transparent),
    radial-gradient(0.8px 0.8px at 66% 20%, var(--star), transparent),
    radial-gradient(1.1px 1.1px at 86% 28%, var(--star), transparent),
    radial-gradient(2px 2px at 92% 12%, var(--star), transparent),
    radial-gradient(1.6px 1.6px at 70% 10%, var(--star), transparent),
    radial-gradient(0.9px 0.9px at 60% 34%, var(--star), transparent),
    radial-gradient(1.1px 1.1px at 91% 42%, var(--star), transparent),
    radial-gradient(1.4px 1.4px at 63% 22%, var(--star), transparent),
    radial-gradient(1.8px 1.8px at 96% 30%, var(--star), transparent),
    radial-gradient(1px 1px at 82% 46%, var(--star), transparent),
    radial-gradient(0.8px 0.8px at 74% 38%, var(--star), transparent),
    radial-gradient(2.1px 2.1px at 54% 24%, var(--star), transparent),
    radial-gradient(1.3px 1.3px at 96% 48%, var(--star), transparent),
    radial-gradient(0.9px 0.9px at 68% 6%, var(--star), transparent);
  animation:twinkle 3.6s ease-in-out infinite}
.hero .wrap{position:relative;z-index:2;margin:0 0 0 clamp(24px,8vw,120px);max-width:600px}
.eyebrow{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:500;font-size:12px;
  letter-spacing:0.36em;text-transform:uppercase;color:var(--sprout-deep);margin-bottom:18px}
.wordmark{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:900;
  font-size:clamp(42px,11vw,110px);line-height:0.95;letter-spacing:-0.01em;color:var(--ink)}
.wordmark span{color:var(--sprout)}
.lede{margin-top:22px;max-width:34ch;font-family:"Zen Kaku Gothic New",sans-serif;font-weight:500;
  font-size:clamp(16px,3vw,22px);line-height:1.6;color:var(--ink)}
.lede small{display:block;font-family:"Noto Sans JP";font-weight:400;font-size:15px;
  color:var(--ink-soft);letter-spacing:0.12em;margin-top:8px}

/* ── hero controls ── */
.hero-controls{position:absolute;left:0;right:0;bottom:clamp(16px,4vw,30px);z-index:3;
  padding:0 clamp(16px,4vw,40px);display:flex;align-items:center;justify-content:center;
  gap:12px;flex-wrap:wrap}
.replant{display:flex;align-items:center;gap:8px;cursor:pointer;
  font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:13px;letter-spacing:0.06em;
  color:var(--sprout-deep);background:rgba(51,42,88,0.85);border:1px solid var(--rule);
  border-radius:999px;padding:11px 16px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  transition:transform .2s,background .2s}
.replant:hover{background:var(--paper-card)}
.replant:active{transform:scale(0.96)}
.replant svg{width:15px;height:15px}

/* ── hero CTA buttons ── */
.hero-cta{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px;animation:rise .8s .36s both}
.cta-btn{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:14px;
  letter-spacing:0.07em;text-decoration:none;padding:12px 22px;border-radius:999px;
  transition:transform .2s,background .2s,box-shadow .2s;display:inline-block}
.cta-primary{background:var(--sprout);color:#fff;box-shadow:0 6px 20px -6px rgba(46,156,82,0.5)}
.cta-primary:hover{background:var(--sprout-deep);transform:translateY(-2px);box-shadow:0 10px 24px -8px rgba(46,156,82,0.6)}
.cta-secondary{background:rgba(51,42,88,0.85);color:var(--sprout-deep);
  border:1.5px solid rgba(46,156,82,0.3);backdrop-filter:blur(6px)}
.cta-secondary:hover{background:var(--paper-card);border-color:var(--sprout);transform:translateY(-2px)}

/* ── about ── */
.about{padding:clamp(56px,9vw,96px) 0;border-top:1px solid var(--rule)}
.about-badge{display:inline-flex;align-items:center;gap:8px;
  font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:12px;
  letter-spacing:0.2em;text-transform:uppercase;color:var(--sprout-deep);
  background:rgba(46,156,82,0.08);border:1px solid rgba(46,156,82,0.22);
  border-radius:999px;padding:6px 14px;margin-bottom:22px}
.about-badge svg{width:14px;height:14px}
.about-title{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:900;
  font-size:clamp(26px,5.5vw,42px);letter-spacing:0.01em;line-height:1.25;
  color:var(--ink);margin-bottom:20px}
.about-desc{font-size:15px;color:var(--ink-soft);line-height:1.9;max-width:62ch}
.about-desc strong{color:var(--ink);font-weight:700}
.about-desc--en{margin-top:10px;font-size:13.5px;opacity:0.75;font-style:italic}
.about-pillars{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:18px;margin-top:40px}
.pillar{background:var(--paper-card);border:1px solid var(--rule);border-radius:16px;
  padding:24px 22px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.pillar:hover{transform:translateY(-4px);box-shadow:0 28px 52px -24px rgba(0,0,0,0.5)}
.pillar-icon{width:44px;height:44px;border-radius:12px;background:rgba(46,156,82,0.1);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
  color:var(--sprout-deep);transition:background .2s}
.pillar:hover .pillar-icon{background:rgba(46,156,82,0.18)}
.pillar-icon svg{width:22px;height:22px}
.pillar h3{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:16px;
  letter-spacing:0.02em;margin-bottom:8px;color:var(--ink)}
.pillar p{font-size:13.5px;color:var(--ink-soft);line-height:1.8}

/* ── support ── */
.support{padding:clamp(40px,7vw,72px) 0;background:linear-gradient(180deg,var(--paper) 0%,rgba(123,94,163,0.08) 100%)}
.support-intro{font-size:15px;color:var(--ink-soft);margin-bottom:28px;line-height:1.8}
.support-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.support-card{display:flex;align-items:flex-start;gap:20px;
  background:var(--paper-card);border:1px solid var(--rule);border-radius:18px;
  padding:26px 24px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.support-card:hover{transform:translateY(-4px);box-shadow:0 28px 52px -24px rgba(0,0,0,0.5)}
.support-icon{flex-shrink:0;width:52px;height:52px;border-radius:14px;
  display:flex;align-items:center;justify-content:center}
.support-icon svg{width:26px;height:26px}
.support-icon.it{background:rgba(46,156,82,0.12);color:var(--sprout-deep)}
.support-icon.en{background:rgba(123,94,163,0.14);color:var(--plum)}
.support-body{flex:1}
.support-label{display:inline-block;font-family:"Zen Kaku Gothic New",sans-serif;
  font-weight:700;font-size:11px;letter-spacing:0.18em;text-transform:uppercase;
  color:var(--sprout-deep);margin-bottom:6px;opacity:0.7}
.support-body h3{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;
  font-size:18px;letter-spacing:0.02em;margin-bottom:8px;color:var(--ink)}
.support-body p{font-size:13.5px;color:var(--ink-soft);line-height:1.85}

/* ── location ── */
.location{padding:clamp(40px,7vw,72px) 0;border-top:1px solid var(--rule)}
.location-name{display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:17px;
  color:var(--ink);margin-bottom:24px}
.location-name svg{width:20px;height:20px;color:var(--sprout-deep);flex-shrink:0}
.map-ext{display:inline-flex;align-items:center;gap:6px;margin-left:4px;
  font-size:13px;font-weight:700;letter-spacing:0.06em;color:var(--sprout-deep);
  text-decoration:none;padding:7px 14px;border:1.5px solid rgba(46,156,82,0.3);
  border-radius:999px;transition:background .2s,border-color .2s}
.map-ext:hover{background:rgba(46,156,82,0.08);border-color:var(--sprout)}
.map-ext svg{width:13px;height:13px;stroke:currentColor;fill:none}
.loc-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.map-wrap{border-radius:16px;overflow:hidden;box-shadow:var(--shadow);
  border:1px solid var(--rule);aspect-ratio:4/3}
.map-wrap iframe{width:100%;height:100%;border:0;display:block}
.venue-photos{display:flex;flex-direction:column;gap:14px}
.photos-label{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;
  font-size:13px;letter-spacing:0.1em;text-transform:uppercase;
  color:var(--sprout-deep);margin-bottom:2px}
.photo-grid{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:auto auto;gap:10px}
.photo-slot{border-radius:12px;overflow:hidden;border:1.5px dashed rgba(46,156,82,0.3);
  background:rgba(46,156,82,0.04);aspect-ratio:4/3;position:relative;
  transition:border-color .2s,background .2s}
.photo-slot--large{grid-column:1 / -1;aspect-ratio:16/7}
.photo-slot img{width:100%;height:100%;object-fit:cover;display:block;border-radius:inherit}
.photo-placeholder{position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:8px;color:var(--sprout-deep);opacity:0.45}
.photo-placeholder svg{width:28px;height:28px}
.photo-placeholder span{font-size:12px;font-family:"Zen Kaku Gothic New",sans-serif;
  font-weight:700;letter-spacing:0.08em}
@media(max-width:680px){
  .loc-grid{grid-template-columns:1fr}
  .map-wrap{aspect-ratio:16/9}
}

/* ── schedule ── */
.schedule{padding:clamp(40px,7vw,72px) 0;border-top:1px solid var(--rule)}
.schedule-sub{font-size:14px;color:var(--ink-soft);letter-spacing:0.06em;margin-bottom:18px}
.sched-legend{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.sleg{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:12px;
  letter-spacing:0.1em;padding:5px 14px;border-radius:999px}
.sleg.rest{background:rgba(46,156,82,0.12);color:var(--sprout-deep);border:1px solid rgba(46,156,82,0.25)}
.sleg.english{background:rgba(123,94,163,0.12);color:var(--plum);border:1px solid rgba(123,94,163,0.25)}
.sleg.it{background:rgba(196,232,74,0.22);color:var(--lime);border:1px solid rgba(196,232,74,0.4)}
.sched-calendar{border-radius:14px;box-shadow:var(--shadow);border:1px solid var(--rule);
  overflow:hidden;background:var(--paper-card)}
.sched-calendar iframe{display:block;width:100%;height:600px}

/* ── schedule event descriptions ── */
.sched-desc{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:14px;margin:0 0 22px}
.sched-desc-item{background:var(--paper-card);border:1px solid var(--rule);
  border-radius:14px;padding:16px 18px}
.sched-desc-item .sleg{display:inline-flex;margin-bottom:10px}
.sched-desc-item p{font-size:13px;color:var(--ink-soft);line-height:1.75}
.sched-note{display:flex;align-items:flex-start;gap:12px;margin-top:18px;
  background:rgba(51,42,88,0.9);border:1px solid var(--rule);border-radius:12px;
  padding:16px 18px;font-size:14px;color:var(--ink-soft);line-height:1.8}
.sched-note svg{width:18px;height:18px;flex-shrink:0;margin-top:3px;color:var(--sprout-deep)}
.sched-note strong{color:var(--ink)}

/* ── events / ideas section ── */
.events{padding:clamp(40px,7vw,76px) 0 24px}
.section-head{display:flex;align-items:baseline;gap:14px;margin-bottom:14px}
.section-head h2{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;
  font-size:clamp(20px,4vw,28px);letter-spacing:0.02em}
.section-head .ja-en{font-size:12px;letter-spacing:0.2em;color:var(--sprout-deep);
  font-family:"Zen Kaku Gothic New",sans-serif;text-transform:uppercase}
.stem{position:relative;margin-top:34px;padding-left:46px}
.stem::before{content:"";position:absolute;left:17px;top:6px;bottom:24px;width:3px;
  background:linear-gradient(var(--sprout),var(--lime));border-radius:3px;
  transform-origin:top;animation:growStem 1.1s .2s both ease-out}
.node{position:relative;margin-bottom:22px;animation:rise .7s both}
.node:nth-child(1){animation-delay:.45s}
.node:nth-child(2){animation-delay:.65s}
.node:nth-child(3){animation-delay:.85s}
.node:nth-child(4){animation-delay:1.05s}
.node::before{content:"";position:absolute;left:-37px;top:24px;width:18px;height:18px;
  background:var(--sprout);border-radius:0 50% 50% 50%;transform:rotate(45deg);box-shadow:0 0 0 5px var(--paper)}
.node.upcoming::before{background:var(--lime)}
.card{background:var(--paper-card);border:1px solid var(--rule);border-radius:16px;
  padding:22px 24px;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease}
.card:hover{transform:translateY(-3px);box-shadow:0 26px 50px -24px rgba(0,0,0,0.55)}
.card .meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.badge{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:12px;
  letter-spacing:0.08em;padding:4px 12px;border-radius:999px;
  background:rgba(31,122,62,0.12);color:var(--sprout-deep)}
.badge.upcoming{background:var(--lime);color:#241c3f}
.date{font-size:14px;color:var(--ink-soft);letter-spacing:0.04em}
.card h3{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;
  font-size:clamp(18px,3.6vw,23px);letter-spacing:0.01em;line-height:1.45}
.card .presenter{font-size:14px;color:var(--ink-soft);margin-top:4px;letter-spacing:0.04em}
.card .desc{font-size:14px;color:var(--ink-soft);margin-top:8px;line-height:1.75}
.card-link{display:inline-flex;align-items:center;gap:7px;margin-top:14px;
  font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:13px;
  letter-spacing:0.06em;color:var(--sprout-deep);text-decoration:none;
  padding:9px 16px;border:1.5px solid rgba(46,156,82,0.3);border-radius:999px;
  transition:background .2s,border-color .2s}
.card-link:hover{background:rgba(46,156,82,0.08);border-color:var(--sprout)}
.card-link svg{width:14px;height:14px;stroke:currentColor;fill:none}
.placeholder{display:flex;align-items:center;gap:8px;margin-top:14px;
  font-size:13px;color:var(--ink-soft);padding:10px 14px;
  border:1.5px dashed var(--rule);border-radius:10px}
.placeholder svg{width:15px;height:15px;stroke:var(--ink-soft);fill:none;opacity:0.45;flex-shrink:0}

/* ── back nav ── */
.back-row{padding:clamp(24px,5vw,48px) 0 clamp(32px,6vw,56px);display:flex;gap:10px;flex-wrap:wrap}
.back-link{display:inline-flex;align-items:center;gap:7px;
  font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:14px;
  letter-spacing:0.06em;color:var(--sprout-deep);text-decoration:none;
  padding:11px 18px;border:1.5px solid rgba(46,156,82,0.3);border-radius:999px;
  transition:background .2s,border-color .2s}
.back-link:hover{background:rgba(46,156,82,0.07);border-color:var(--sprout)}
.back-link svg{width:15px;height:15px;stroke:currentColor;fill:none}

/* ── footer ── */
.site-footer{margin-top:40px;border-top:1px solid var(--rule);background:var(--twilight-deep);color:var(--star)}
.site-footer .wrap{padding:34px 24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px}
.site-footer .org{font-size:14px;letter-spacing:0.04em;opacity:0.92}
.site-footer .org b{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:900;letter-spacing:0.14em}
.site-footer .leaf{width:22px;height:22px;opacity:0.85}

/* ── motion ── */
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@keyframes growStem{from{transform:scaleY(0)}to{transform:scaleY(1)}}
@keyframes twinkle{0%,100%{opacity:0.45}50%{opacity:1}}
.hero .eyebrow{animation:rise .7s .05s both}
.hero .wordmark{animation:rise .8s .12s both}
.hero .lede{animation:rise .8s .24s both}

/* ── mascot ── */
.hero-mascot{position:absolute;z-index:2;pointer-events:none;filter:drop-shadow(0 18px 24px rgba(0,0,0,0.35))}
.hero-mascot--laptop{right:clamp(6px,4vw,48px);bottom:clamp(96px,14vw,140px);
  width:clamp(140px,20vw,260px);animation:mascotBob 3.4s ease-in-out infinite}
.hero-mascot--idea{left:clamp(10px,5vw,64px);bottom:clamp(96px,13vw,132px);
  width:clamp(70px,10vw,130px);animation:mascotBob 3.8s ease-in-out .5s infinite}
@keyframes mascotBob{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-14px) rotate(-2deg)}}
.idea-mascot{position:relative;display:inline-block;width:44px;height:68px;vertical-align:middle;align-self:flex-end}
.idea-mascot img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:bottom}
.idea-mascot img:first-child{animation:ideaFrame1 1.2s steps(1,end) infinite}
.idea-mascot img:last-child{animation:ideaFrame2 1.2s steps(1,end) infinite}
@keyframes ideaFrame1{0%,49%{opacity:1}50%,100%{opacity:0}}
@keyframes ideaFrame2{0%,49%{opacity:0}50%,100%{opacity:1}}
@media(prefers-reduced-motion:reduce){*{animation:none !important}.stem::before{transform:none}
  .idea-mascot img:last-child{opacity:0}.idea-mascot img:first-child{opacity:1}}
@media(max-width:600px){
  .hero-mascot--laptop{width:clamp(110px,32vw,180px);bottom:clamp(150px,30vw,190px)}
  .hero-mascot--idea{display:none}
}
@media(max-width:600px){
  .hero{min-height:clamp(520px,84vh,680px)}
  .hero-sprout{right:2%;width:clamp(180px,46vw,300px);opacity:0.6}
  .hero::before{background:
    linear-gradient(90deg,var(--paper) 0%,rgba(36,28,63,0.55) 50%,rgba(36,28,63,0.15) 100%),
    linear-gradient(0deg,var(--paper) 0%,rgba(36,28,63,0) 34%)}
  .lede{max-width:none}
  .hero-cta{margin-top:20px}
  .cta-btn{font-size:13px;padding:11px 18px}
  .about-pillars{grid-template-columns:1fr}
  .support-card{flex-direction:column;gap:14px}
  .support-cards{grid-template-columns:1fr}
}