:root {
  --ink: #10243a;
  --ink-soft: #53677b;
  --paper: #f4f8fb;
  --white: #ffffff;
  --line: #d7e2eb;
  --green: #1976a8;
  --green-deep: #0b3f66;
  --coral: #138bb8;
  --gold: #f0b85a;
  --blue: #72bdd8;
  --shadow: 0 20px 60px rgba(11, 63, 102, 0.14);
  --radius-lg: 28px;
  --radius-md: 18px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, sans-serif;
  line-height: 1.8;
  letter-spacing: 0.02em;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }

.skip-link {
  position: fixed; left: 1rem; top: -4rem; z-index: 9999;
  padding: .75rem 1rem; color: #fff; background: var(--green-deep);
  border-radius: .5rem;
}
.skip-link:focus { top: 1rem; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

.site-header {
  position: fixed; inset: 0 0 auto; z-index: 1000;
  transition: background .25s ease, box-shadow .25s ease, backdrop-filter .25s ease;
}
.site-header.is-scrolled {
  background: rgba(244,248,251,.92);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(16,36,58,.08);
}
.header-inner {
  width: min(calc(100% - 40px), var(--max)); margin: 0 auto;
  min-height: 86px; display: flex; align-items: center; justify-content: space-between;
}
.brand { display: inline-flex; align-items: center; gap: .8rem; }
.brand-mark { width: 40px; height: 40px; color: var(--green); }
.brand-mark svg rect, .brand-mark svg path, .brand-mark svg circle { fill: none; stroke: currentColor; stroke-width: 2.3; }
.brand-mark svg circle { fill: currentColor; stroke: none; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.15; }
.brand-copy strong { font-size: 1.05rem; letter-spacing: .08em; }
.brand-copy small { margin-top: .25rem; color: var(--ink-soft); font-size: .68rem; letter-spacing: .22em; }
.site-nav { display: flex; align-items: center; gap: 1.8rem; font-size: .88rem; font-weight: 700; }
.site-nav a { position: relative; }
.site-nav a:not(.nav-cta)::after { content:""; position:absolute; left:0; right:100%; bottom:-.35rem; height:2px; background:var(--green); transition:right .25s; }
.site-nav a:hover::after { right:0; }
.nav-cta { padding: .72rem 1.2rem; color: var(--white); background: var(--green-deep); border-radius: 999px; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; padding: 10px; }
.menu-toggle span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: var(--ink); transition: transform .2s, opacity .2s; }

.hero { position: relative; min-height: 760px; overflow: hidden; padding: 155px 0 90px; background: var(--paper); }
.hero-grid { position:absolute; inset:0; opacity:.36; background-image: linear-gradient(rgba(25,118,168,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(25,118,168,.07) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(to right, black, transparent 76%); }
.hero::after { content:""; position:absolute; width:480px; height:480px; border:1px solid rgba(25,118,168,.16); border-radius:50%; right:-180px; top:90px; }
.hero-inner { position:relative; width:min(calc(100% - 40px), var(--max)); margin:auto; display:grid; grid-template-columns: 1.08fr .92fr; gap:6vw; align-items:center; }
.eyebrow { margin:0 0 1rem; color:var(--green); font-size:.72rem; font-weight:800; letter-spacing:.22em; }
.hero h1, .section h2 { margin:0; font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-weight:600; letter-spacing:.04em; }
.hero h1 { font-size:clamp(2.0rem, 4.0vw, 4.6rem); line-height:1.22; }
.hero h1 em { color:var(--coral); font-style:normal; }
.hero-lead { max-width:720px; margin:1.8rem 0 0; color:var(--ink-soft); font-size:1.03rem; }
.hero-actions { display:flex; gap:.8rem; margin-top:2.2rem; flex-wrap:wrap; }
.button { display:inline-flex; align-items:center; justify-content:center; min-height:52px; padding:.8rem 1.45rem; border-radius:999px; font-size:.92rem; font-weight:800; transition:transform .2s, box-shadow .2s, background .2s; }
.button:hover { transform:translateY(-2px); }
.button-primary { color:#fff; background:var(--green); box-shadow:0 10px 24px rgba(25,118,168,.24); }
.button-primary:hover { background:var(--green-deep); }
.button-secondary { border:1px solid var(--ink); background:rgba(255,255,255,.35); }
.hero-facts { display:flex; gap:0; margin:2.5rem 0 0; padding:1.2rem 0 0; border-top:1px solid var(--line); }
.hero-facts div { padding:0 1.5rem; border-left:1px solid var(--line); }
.hero-facts div:first-child { padding-left:0; border-left:0; }
.hero-facts dt { color:var(--ink-soft); font-size:.68rem; font-weight:700; letter-spacing:.12em; }
.hero-facts dd { margin:.2rem 0 0; font-size:.88rem; font-weight:800; }

.hero-visual { position:relative; min-height:510px; }
.poster-card { position:absolute; background:var(--white); box-shadow:var(--shadow); }
.poster-main { width:min(360px, 80%); height:500px; left:10%; top:0; padding:22px; border:12px solid #fff; transform:rotate(2deg); }
.poster-number { position:absolute; right:20px; top:12px; z-index:2; font:700 1rem/1 sans-serif; }
.poster-art { position:relative; height:345px; overflow:hidden; background:#d9eff7; }
.sun { position:absolute; width:86px; height:86px; border-radius:50%; background:var(--gold); top:48px; right:52px; }
.wave { position:absolute; left:-10%; width:120%; height:150px; border-radius:50% 50% 0 0; }
.wave-a { bottom:-55px; background:var(--blue); transform:rotate(-4deg); }
.wave-b { bottom:-100px; background:#4fa6ca; transform:rotate(6deg); }
.hill { position:absolute; bottom:20px; width:220px; height:160px; border-radius:50% 50% 0 0; }
.hill-a { left:-60px; background:#5e9bb7; transform:rotate(12deg); }
.hill-b { right:-80px; background:#2e7599; transform:rotate(-8deg); }
.poster-caption { padding-top:18px; display:flex; flex-direction:column; }
.poster-caption strong { font-family:"Yu Mincho", serif; font-size:1.3rem; }
.poster-caption span { color:var(--ink-soft); font-size:.74rem; }
.qr-motif { position:absolute; right:24px; bottom:20px; width:54px; height:54px; display:grid; grid-template-columns:repeat(3,1fr); gap:3px; }
.qr-motif i { background:var(--ink); }
.poster-note { width:210px; right:0; bottom:20px; padding:20px; transform:rotate(-4deg); background:var(--coral); color:#fff; }
.poster-note span { font-size:.62rem; letter-spacing:.18em; }
.poster-note strong { display:block; margin-top:.6rem; font-family:"Yu Mincho",serif; font-size:1.15rem; line-height:1.5; }
.route-line { position:absolute; left:0; bottom:5px; width:120px; height:70px; border-left:2px dashed var(--green); border-bottom:2px dashed var(--green); border-radius:0 0 0 32px; }
.route-line span { position:absolute; width:12px; height:12px; border-radius:50%; background:var(--green); }
.route-line span:nth-child(1){left:-7px;top:-4px}.route-line span:nth-child(2){left:-7px;bottom:-7px}.route-line span:nth-child(3){right:-7px;bottom:-7px}

.trust-strip { background:var(--green-deep); color:#fff; }
.section-inner { width:min(calc(100% - 40px), var(--max)); margin:0 auto; }
.trust-grid { display:grid; grid-template-columns:repeat(3,1fr); }
.trust-grid div { display:flex; gap:1rem; align-items:center; min-height:100px; padding:1rem 2rem; border-left:1px solid rgba(255,255,255,.18); }
.trust-grid div:first-child { border-left:0; }
.trust-grid strong { color:var(--gold); font:600 1.8rem/1 "Yu Mincho",serif; }
.trust-grid span { font-size:.87rem; font-weight:700; }

.section { padding:120px 0; }
.two-column { display:grid; grid-template-columns:1fr 1fr; gap:7vw; align-items:start; }
.section h2 { font-size:clamp(2.0rem, 3vw, 3.6rem); line-height:1.45; }
.body-copy { color:var(--ink-soft); font-size:1rem; }
.body-copy p:first-child { margin-top:0; }
.experience-flow { margin-top:70px; display:grid; grid-template-columns:repeat(4,1fr); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.experience-flow article { padding:2rem 1.6rem 2.2rem; border-left:1px solid var(--line); }
.experience-flow article:first-child { border-left:0; }
.flow-icon { color:var(--coral); font:600 1.5rem/1 "Yu Mincho",serif; }
.experience-flow h3 { margin:.9rem 0 .4rem; font-family:"Yu Mincho",serif; font-size:1.45rem; }
.experience-flow p { margin:0; color:var(--ink-soft); font-size:.86rem; }

.section-dark { color:#fff; background:var(--green-deep); }
.section-dark .eyebrow { color:var(--gold); }
.heading-wide { display:grid; grid-template-columns:1.2fr .8fr; gap:6vw; align-items:end; }
.heading-wide > p { margin:0 0 .5rem; color:rgba(255,255,255,.72); }
.shop-steps { margin-top:65px; display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:rgba(255,255,255,.16); border:1px solid rgba(255,255,255,.16); }
.shop-steps article { min-height:290px; padding:2rem; background:var(--green-deep); }
.shop-steps span { display:grid; place-items:center; width:44px; height:44px; border:1px solid rgba(255,255,255,.4); border-radius:50%; color:var(--gold); font:600 1.1rem "Yu Mincho",serif; }
.shop-steps h3 { margin:2rem 0 .8rem; font-size:1.2rem; }
.shop-steps p { margin:0; color:rgba(255,255,255,.72); font-size:.9rem; }
.benefit-panel { margin-top:55px; display:grid; grid-template-columns:1fr 330px; gap:5vw; align-items:center; padding:3.5rem; color:var(--ink); background:var(--white); border-radius:var(--radius-lg); }
.benefit-copy h3 { margin:.3rem 0 1.5rem; font-family:"Yu Mincho",serif; font-size:2rem; }
.check-list { list-style:none; padding:0; margin:0; display:grid; gap:.8rem; }
.check-list li { position:relative; padding-left:1.8rem; }
.check-list li::before { content:"✓"; position:absolute; left:0; color:var(--green); font-weight:900; }
.benefit-card { padding:2rem; color:#fff; background:var(--coral); border-radius:var(--radius-md); }
.benefit-card .small-label { font-size:.62rem; letter-spacing:.18em; }
.benefit-card strong { display:block; margin:.3rem 0 0; font:600 3.7rem/1 "Yu Mincho",serif; }
.benefit-card p { margin:.5rem 0 0; font-size:.8rem; }
.benefit-card hr { margin:1.6rem 0; border:0; border-top:1px solid rgba(255,255,255,.35); }

.project-grid { margin-top:60px; display:grid; grid-template-columns:1.25fr .75fr; gap:24px; }
.project-card { overflow:hidden; background:var(--white); border:1px solid var(--line); border-radius:var(--radius-lg); transition:transform .25s, box-shadow .25s; }
a.project-card:hover { transform:translateY(-5px); box-shadow:var(--shadow); }
.project-image, .project-placeholder { height:300px; }
.shonan-art { position:relative; overflow:hidden; background:#cdeaf5; }
.shonan-art span:nth-child(1) { position:absolute; width:180px; height:180px; border-radius:50%; background:var(--gold); top:50px; right:80px; }
.shonan-art span:nth-child(2) { position:absolute; width:120%; height:220px; border-radius:50%; background:#5aa9ca; left:-10%; bottom:-120px; transform:rotate(-5deg); }
.shonan-art span:nth-child(3) { position:absolute; width:70%; height:190px; border-radius:50% 50% 0 0; background:#337ca0; left:-10%; bottom:-25px; transform:rotate(6deg); }
.project-placeholder { display:grid; place-items:center; background:linear-gradient(135deg,#edf3f7,#dceaf3); }
.project-placeholder span { font:600 5rem "Yu Mincho",serif; color:rgba(22,32,28,.22); }
.project-info { padding:1.8rem 2rem 2rem; }
.status { display:inline-flex; padding:.3rem .65rem; border-radius:999px; color:var(--green-deep); background:#dceef7; font-size:.68rem; font-weight:800; letter-spacing:.08em; }
.status.muted { background:#ece8df; }
.project-info h3 { margin:1rem 0 .6rem; font-family:"Yu Mincho",serif; font-size:1.65rem; }
.project-info p { margin:0; color:var(--ink-soft); font-size:.9rem; }
.project-info small { display:block; margin-top:1.4rem; color:var(--green); font-weight:800; }

.section-soft { background:#eaf2f7; }
.structure-layout { margin-top:60px; display:grid; grid-template-columns:1.1fr .9fr; gap:6vw; align-items:center; }
.structure-diagram { padding:2.2rem; background:rgba(255,255,255,.62); border:1px solid rgba(22,32,28,.1); border-radius:var(--radius-lg); }
.org-node { padding:1.2rem; text-align:center; background:var(--white); border:1px solid var(--line); border-radius:14px; }
.org-node strong, .org-node small { display:block; }
.org-node small { margin-top:.3rem; color:var(--ink-soft); font-size:.72rem; }
.primary-node { padding:1.6rem; color:#fff; background:var(--green-deep); border-color:var(--green-deep); }
.primary-node span { display:block; margin-bottom:.5rem; color:var(--gold); font-size:.62rem; letter-spacing:.18em; }
.connector { width:1px; height:42px; margin:auto; background:var(--ink-soft); }
.org-grid { display:grid; grid-template-columns:1fr 1fr; gap:12px; position:relative; }
.structure-copy h3 { margin:0 0 1rem; font-family:"Yu Mincho",serif; font-size:2rem; }
.structure-copy > p { color:var(--ink-soft); }
.detail-list { margin:2rem 0 0; border-top:1px solid var(--line); }
.detail-list div { display:grid; grid-template-columns:130px 1fr; gap:1rem; padding:.9rem 0; border-bottom:1px solid var(--line); }
.detail-list dt { color:var(--ink-soft); font-size:.8rem; }
.detail-list dd { margin:0; font-weight:800; }

.contact-section { padding-top:0; }
.contact-panel { display:grid; grid-template-columns:1fr auto; gap:3rem; align-items:center; padding:4rem; color:#fff; background:var(--coral); border-radius:var(--radius-lg); }
.contact-panel .eyebrow { color:#fff; opacity:.78; }
.contact-panel h2 { font-size:clamp(2rem,4vw,3.3rem); }
.contact-panel p { margin-bottom:0; }
.contact-actions { display:flex; flex-direction:column; align-items:center; gap:.8rem; }
.button-light { color:var(--coral); background:#fff; }
.contact-actions span { font-size:.8rem; }

.site-footer { padding:70px 0 30px; color:#fff; background:#082f4d; }
.footer-grid { display:grid; grid-template-columns:1fr .7fr .8fr; gap:5vw; }
.brand-footer .brand-mark { color:var(--gold); }
.brand-footer .brand-copy small { color:rgba(255,255,255,.6); }
.footer-grid > div > p { color:rgba(255,255,255,.58); font-size:.82rem; }
.footer-links { display:grid; align-content:start; gap:.7rem; font-size:.84rem; }
.footer-meta { text-align:right; }
.footer-meta p { margin:.2rem 0; }

.reveal { opacity:0; transform:translateY(24px); transition:opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity:1; transform:none; }
.delay-1 { transition-delay:.12s; }

@media (max-width: 900px) {
  .site-nav { position:fixed; inset:0; z-index:-1; flex-direction:column; justify-content:center; gap:1.4rem; font-size:1.2rem; background:var(--paper); opacity:0; visibility:hidden; transition:.25s; }
  .site-nav.is-open { opacity:1; visibility:visible; z-index:999; }
  .menu-toggle { display:block; position:relative; z-index:1001; }
  .menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hero-inner, .two-column, .heading-wide, .structure-layout { grid-template-columns:1fr; }
  .hero { padding-top:130px; }
  .hero-visual { margin-top:2rem; }
  .hero-facts { flex-wrap:wrap; row-gap:1rem; }
  .hero-facts div { flex:1 1 160px; }
  .trust-grid, .experience-flow, .shop-steps { grid-template-columns:1fr 1fr; }
  .trust-grid div:nth-child(3), .experience-flow article:nth-child(3) { border-left:0; }
  .benefit-panel { grid-template-columns:1fr; }
  .project-grid { grid-template-columns:1fr; }
  .contact-panel, .footer-grid { grid-template-columns:1fr; }
  .contact-actions { align-items:flex-start; }
  .footer-meta { text-align:left; }
}

@media (max-width: 620px) {
  .header-inner, .section-inner, .hero-inner { width:min(calc(100% - 28px), var(--max)); }
  .brand-copy strong { font-size:.92rem; }
  .hero { min-height:auto; padding-bottom:70px; }
  .hero h1 { font-size:2.65rem; }
  .hero-lead br { display:none; }
  .hero-actions .button { width:100%; }
  .hero-facts { display:grid; grid-template-columns:1fr; }
  .hero-facts div { padding:0; border:0; }
  .hero-visual { min-height:430px; }
  .poster-main { left:0; width:88%; height:430px; }
  .poster-art { height:285px; }
  .poster-note { width:165px; right:0; }
  .trust-grid, .experience-flow, .shop-steps { grid-template-columns:1fr; }
  .trust-grid div, .trust-grid div:nth-child(3), .experience-flow article, .experience-flow article:nth-child(3) { border-left:0; border-top:1px solid rgba(255,255,255,.16); }
  .experience-flow article { border-top:1px solid var(--line); }
  .section { padding:82px 0; }
  .benefit-panel, .contact-panel { padding:2rem 1.4rem; }
  .benefit-card strong { font-size:3rem; }
  .project-image, .project-placeholder { height:230px; }
  .org-grid { grid-template-columns:1fr; }
  .detail-list div { grid-template-columns:1fr; gap:.15rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior:auto; }
  *, *::before, *::after { animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
  .reveal { opacity:1; transform:none; }
}


/* Executive committee */
.committee-section { background: linear-gradient(180deg, var(--paper), #e8f2f8); }
.committee-section .heading-wide > p { color: var(--ink-soft); }
.committee-grid { margin-top: 56px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.committee-card { padding: 2.5rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: 0 14px 40px rgba(11,63,102,.08); }
.role-label { display: inline-flex; padding: .35rem .75rem; color: var(--green-deep); background: #dff1f8; border-radius: 999px; font-size: .7rem; font-weight: 800; letter-spacing: .1em; }
.committee-card h3 { margin: 1.2rem 0 .2rem; font-family: "Yu Mincho", serif; font-size: 2rem; }
.committee-title { margin: 0 0 1rem; color: var(--green); font-weight: 800; }
.committee-card p:last-child { margin-bottom: 0; color: var(--ink-soft); }
.committee-note { margin-top: 24px; display: grid; grid-template-columns: 150px 1fr; gap: 2rem; padding: 1.8rem 2rem; color: #fff; background: var(--green-deep); border-radius: var(--radius-md); }
.committee-note p { margin: 0; color: rgba(255,255,255,.76); }

/* Contact form */
.contact-panel { grid-template-columns: .72fr 1.28fr; align-items: start; background: linear-gradient(135deg, var(--green-deep), var(--coral)); }
.contact-form { display: grid; gap: 1rem; padding: 2rem; color: var(--ink); background: rgba(255,255,255,.97); border-radius: var(--radius-md); box-shadow: 0 20px 50px rgba(4,35,58,.2); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.contact-form label { display: grid; gap: .4rem; font-size: .82rem; font-weight: 800; }
.contact-form label span { margin-left: .4rem; color: var(--green); font-size: .68rem; }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; padding: .85rem 1rem; color: var(--ink); background: #fff; border: 1px solid #bdd3e1; border-radius: 10px; outline: none; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(25,118,168,.14); }
.contact-form textarea { resize: vertical; }
.contact-form .privacy-check { display: flex; grid-template-columns: auto 1fr; align-items: center; gap: .65rem; font-weight: 500; }
.contact-form .privacy-check input { width: auto; }
.contact-form .button-light { justify-self: start; color: #fff; background: var(--green); border: 0; cursor: pointer; }
.form-honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-result { min-height: 100vh; display: grid; place-items: center; padding: 2rem; background: var(--paper); }
.form-result-card { width: min(100%, 680px); padding: 3rem; text-align: center; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.form-result-card h1 { font-family: "Yu Mincho", serif; font-size: 2.2rem; }
.form-result-card p { color: var(--ink-soft); }

@media (max-width: 900px) {
  .committee-grid, .contact-panel { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .committee-card { padding: 2rem 1.4rem; }
  .committee-note, .form-row { grid-template-columns: 1fr; gap: .7rem; }
  .contact-form { padding: 1.3rem; }
}

/* =========================================================
   Watercolor art-book visual refinement
   Typography, font sizes and authored line breaks are unchanged.
   ========================================================= */
:root {
  --ink: #223649;
  --ink-soft: #67727c;
  --paper: #f8f6ef;
  --white: #fffdf8;
  --line: #ddd9cc;
  --green: #4e8797;
  --green-deep: #173f5c;
  --coral: #c97764;
  --gold: #d7ad55;
  --blue: #9cc9d2;
  --shadow: 0 22px 60px rgba(43, 65, 78, 0.14);
}

body {
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 9% 12%, rgba(159, 198, 195, .16) 0 5%, transparent 18%),
    radial-gradient(circle at 88% 25%, rgba(224, 183, 139, .12) 0 6%, transparent 20%),
    radial-gradient(circle at 28% 78%, rgba(207, 168, 184, .10) 0 7%, transparent 22%),
    linear-gradient(rgba(255,255,255,.28), rgba(255,255,255,.28));
  background-attachment: fixed;
}

.site-header.is-scrolled {
  background: rgba(248, 246, 239, .92);
  box-shadow: 0 1px 0 rgba(34, 54, 73, .09);
}

.hero {
  background:
    radial-gradient(ellipse at 78% 18%, rgba(240, 193, 142, .28) 0 9%, transparent 26%),
    radial-gradient(ellipse at 90% 62%, rgba(118, 178, 190, .22) 0 12%, transparent 35%),
    radial-gradient(ellipse at 58% 88%, rgba(181, 205, 171, .18) 0 10%, transparent 31%),
    linear-gradient(180deg, #fbfaf5 0%, #f5f3eb 100%);
}
.hero-grid {
  opacity: .52;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(109, 167, 177, .22) 0 1.5%, transparent 12%),
    radial-gradient(circle at 68% 18%, rgba(223, 165, 130, .20) 0 2%, transparent 14%),
    radial-gradient(circle at 55% 76%, rgba(153, 181, 142, .19) 0 2%, transparent 16%);
  background-size: auto;
  mask-image: linear-gradient(to right, black, transparent 82%);
}
.hero::after {
  border: 0;
  width: 560px;
  height: 420px;
  border-radius: 42% 58% 61% 39% / 52% 39% 61% 48%;
  right: -210px;
  top: 80px;
  background: rgba(126, 176, 184, .10);
  filter: blur(2px);
  transform: rotate(-8deg);
}

.button-primary {
  background: var(--green-deep);
  box-shadow: 0 10px 24px rgba(23, 63, 92, .20);
}
.button-primary:hover { background: #255873; }
.button-secondary { background: rgba(255, 253, 248, .65); }

.poster-card {
  background: #fffdf8;
  box-shadow: 0 24px 60px rgba(49, 69, 78, .18);
}
.poster-main {
  border-color: #fffdf8;
  box-shadow: 0 24px 60px rgba(49, 69, 78, .18), inset 0 0 0 1px rgba(93, 104, 103, .08);
}
.poster-art {
  background:
    radial-gradient(ellipse at 62% 19%, rgba(237, 186, 123, .72) 0 8%, transparent 24%),
    radial-gradient(ellipse at 25% 20%, rgba(133, 184, 191, .44) 0 12%, transparent 31%),
    linear-gradient(180deg, #dce9e7 0%, #f3e9d4 50%, #c7d8cf 100%);
}
.sun { background: rgba(222, 174, 83, .72); filter: blur(.3px); }
.wave-a { background: rgba(124, 177, 190, .78); border-radius: 48% 52% 0 0 / 33% 38% 0 0; }
.wave-b { background: rgba(79, 139, 158, .80); border-radius: 55% 45% 0 0 / 37% 30% 0 0; }
.hill-a { background: rgba(111, 145, 143, .74); }
.hill-b { background: rgba(54, 101, 121, .74); }
.poster-note { background: #b76f5d; }

.trust-strip,
.section-dark,
.site-footer {
  background:
    radial-gradient(circle at 15% 10%, rgba(255,255,255,.07), transparent 28%),
    radial-gradient(circle at 88% 75%, rgba(142,190,194,.10), transparent 32%),
    var(--green-deep);
}

.section:not(.section-dark):not(.section-soft):not(.committee-section) {
  background-image:
    radial-gradient(circle at 8% 22%, rgba(140, 184, 184, .09) 0 4%, transparent 18%),
    radial-gradient(circle at 92% 77%, rgba(221, 176, 144, .08) 0 5%, transparent 18%);
}

.experience-flow {
  background: rgba(255, 253, 248, .42);
}

.shop-steps article {
  background: rgba(23, 63, 92, .92);
}
.benefit-panel,
.project-card,
.org-node,
.committee-card,
.contact-form,
.form-result-card {
  background: rgba(255, 253, 248, .94);
}
.benefit-card { background: #b76f5d; }

.shonan-art {
  background:
    radial-gradient(ellipse at 65% 20%, rgba(238, 192, 121, .66) 0 10%, transparent 27%),
    linear-gradient(180deg, #cfe2e2 0%, #f2e6cf 56%, #b8d1c9 100%);
}
.shonan-art span:nth-child(1) { background: rgba(218, 171, 80, .68); }
.shonan-art span:nth-child(2) { background: rgba(112, 168, 181, .78); }
.shonan-art span:nth-child(3) { background: rgba(60, 118, 141, .76); }
.project-placeholder {
  background:
    radial-gradient(circle at 22% 30%, rgba(150, 190, 187, .18), transparent 30%),
    radial-gradient(circle at 72% 68%, rgba(218, 176, 150, .16), transparent 32%),
    #f1efe8;
}
.status { background: #dfecea; }
.status.muted { background: #ece5d9; }

.section-soft,
.committee-section {
  background:
    radial-gradient(circle at 10% 18%, rgba(132, 181, 183, .15), transparent 29%),
    radial-gradient(circle at 84% 70%, rgba(223, 175, 146, .12), transparent 31%),
    linear-gradient(180deg, #f2f2eb, #e9efeb);
}
.structure-diagram {
  background: rgba(255, 253, 248, .67);
  border-color: rgba(78, 91, 85, .12);
}
.primary-node { background: var(--green-deep); }
.committee-note { background: var(--green-deep); }
.role-label { background: #e1ede9; }

.contact-panel {
  background:
    radial-gradient(circle at 14% 17%, rgba(255,255,255,.13), transparent 27%),
    radial-gradient(circle at 92% 84%, rgba(229,188,146,.14), transparent 31%),
    linear-gradient(135deg, #173f5c, #8c6259);
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  background: #fffdf8;
  border-color: #cfcfc3;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  box-shadow: 0 0 0 3px rgba(78, 135, 151, .14);
}
.contact-form .button-light { background: var(--green-deep); }

@media (max-width: 820px) {
  .site-nav { background: #f8f6ef; }
}

/* Hero poster: actual artwork by Akira Kurokawa */
.poster-art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}