/* =====================================
   Reset / Base
===================================== */

:root{
  --bg:#faf8f7;
  --paper:#ffffff;
  --soft:#f6f0cf;
  --soft-2:#fbf8e8;
  --text:#2f3334;
  --text-light:#666f72;
  --line:#e8dfdb;
  --brand:#c8423d;
  --brand-dark:#a1302c;
  --brand-soft:#fff2f1;
  --footer:#6b5b58;
  --footer-bottom:#5c4e4b;
  --footer-text:#f5f1ef;
  --shadow:0 14px 34px rgba(65,40,38,.08);
  --max:1180px;
}

*{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  color:var(--text);
  background:#fff;
  font-family:"Noto Sans JP","Yu Gothic","Hiragino Sans","Meiryo",sans-serif;
  line-height:1.75;
  letter-spacing:0.02em;
}

img{
  display:block;
  max-width:100%;
  height:auto;
}

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

/* =====================================
   Layout
===================================== */

.container{
  width:min(92%,var(--max));
  margin:0 auto;
}

/* =====================================
   Header
===================================== */

.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:2px solid var(--brand);
}

.header-inner{
  min-height:72px;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  padding-bottom:10px;
}

.logo{
  display:flex;
  align-items:center;
}

.logo-image{
  width:120px;
  height:auto;
  display:block;
}

/* =====================================
   Navigation
===================================== */

.nav{
  display:flex;
  align-items:flex-end;
  gap:0;
  margin-top:18px;
  font-size:15px;
}

.nav a{
  position:relative;
  padding:6px 12px;
  color:#4d4b4c;
  text-decoration:none;
  line-height:1;
  letter-spacing:0;
  font-weight:600;
  font-size:15px;
}

.nav a span{
  display:block;
  color:inherit;
  line-height:1.2;
}

.nav a + a{
  border-left:1px solid #d8ceca;
}

.nav a:hover{
  color:#b40019;
  font-weight:700;
}

.nav a.active{
  color:var(--brand);
  font-weight:700;
}

.nav a.active span{
  color:inherit;
  font-weight:inherit;
}

/* =====================================
   Mobile menu
===================================== */

.menu-toggle{
  display:none;
  appearance:none;
  border:none;
  background:none;
  cursor:pointer;
  padding:8px 4px;
  color:#4d4b4c;
  font:inherit;
  align-items:center;
  gap:10px;
}

.menu-toggle-bars{
  width:26px;
  height:20px;
  position:relative;
  display:inline-block;
  flex-shrink:0;
}

.menu-toggle-bars span{
  position:absolute;
  left:0;
  width:100%;
  height:2px;
  margin:0;
  background:#c8423d;
  border-radius:999px;
  transition:transform .25s ease, opacity .25s ease, top .25s ease;
}

.menu-toggle-bars span:nth-child(1){
  top:0;
}

.menu-toggle-bars span:nth-child(2){
  top:9px;
}

.menu-toggle-bars span:nth-child(3){
  top:18px;
}

.menu-toggle-text{
  font-size:12px;
  line-height:1;
  letter-spacing:.04em;
  color:#6a5e5b;
  min-width:3.8em;
  text-align:left;
}

.menu-toggle .text-close{
  display:none;
}

/* =====================================
   Common buttons
===================================== */

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:52px;
  padding:0 24px;
  border-radius:10px;
  font-weight:700;
  transition:.22s ease;
  border:1px solid transparent;
  line-height:1;
}

.btn:hover{
  transform:translateY(-1px);
}

.btn-primary{
  background:#b84b45 !important;
  color:#ffffff !important;
  border:1px solid #b84b45 !important;
}

.btn-primary:hover{
  background:#a6403b !important;
  border-color:#a6403b !important;
  color:#ffffff !important;
}

.btn-outline{
  background:#ffffff !important;
  color:var(--brand) !important;
  border:1px solid #b79b92 !important;
  margin-top:24px;
}

.btn-white{
  background:#ffffff !important;
  color:var(--brand) !important;
  border:1px solid #b79b92 !important;
}

.btn-white:hover,
.btn-outline:hover{
  background:#f8f3f0 !important;
  color:var(--brand-dark) !important;
  border-color:#b9988f !important;
}

.hero-actions .btn-white,
.support-actions .btn-outline{
  box-shadow:0 6px 18px rgba(80,55,50,.08);
}

/* =====================================
   Section common
===================================== */

.section{
  padding:88px 0;
}

.section-tint{
  background:var(--bg);
}

.section-head{
  margin-bottom:34px;
}

.section-head-center{
  text-align:center;
}

.eyebrow{
  margin:0 0 14px;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--brand);
  font-weight:600;
}

.section-head h2{
  margin:0 0 8px;
  font-size:clamp(30px,4vw,48px);
  line-height:1.22;
  color:var(--text);
}

.section h2{
  font-size:32px;
  margin:8px 0 18px;
  line-height:1.35;
  color:var(--text);
}

.section-sub{
  margin:0;
  color:var(--text-light);
}

.section-title{
  text-align:center;
  margin-bottom:18px;
}

.section-en{
  display:block;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--brand);
  font-weight:600;
  margin-bottom:8px;
}

.section-ja{
  display:block;
  font-size:32px;
  margin-top:6px;
  line-height:1.35;
  color:var(--text);
}

.lead{
  font-size:16px;
  line-height:1.9;
  color:var(--text-light);
}

/* =====================================
   Layout grids
===================================== */

.voice-grid,
.join-grid,
.project-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}

.voice-grid-2{
  grid-template-columns:repeat(2,1fr);
}

.info-grid{
  display:grid;
  grid-template-columns:minmax(0,1.7fr) minmax(260px,.8fr);
  gap:32px;
  align-items:start;
}

.about-grid{
  display:grid;
  grid-template-columns:1fr 1.08fr;
  gap:52px;
  align-items:center;
}

/* =====================================
   Common cards
===================================== */

.feature-card,
.project-card,
.join-card,
.side-box{
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}

.feature-card{
  border-radius:22px;
  overflow:hidden;
  transition:transform .25s ease, box-shadow .25s ease;
}

.feature-card:hover{
  transform:translateY(-6px);
  box-shadow:0 18px 38px rgba(65,40,38,.12);
}

.feature-card img,
.project-card img{
  aspect-ratio:4/3;
  object-fit:cover;
  width:100%;
}

.project-card{
  border-radius:22px;
  overflow:hidden;
}

.project-body{
  padding:22px 22px 24px;
}

.project-org{
  margin:0 0 8px;
  color:var(--brand);
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
}

.project-body h3{
  margin:0 0 12px;
  font-size:23px;
  line-height:1.35;
  color:var(--text);
}

.project-text{
  margin:0;
  color:var(--text-light);
}

/* =====================================
   Lower page common
===================================== */

.page-hero{
  background:linear-gradient(180deg,#f3ece7 0%,#eadfd8 100%) !important;
  border-bottom:1px solid #dfd0c9 !important;
  padding:60px 0 56px;
}

.page-hero h2{
  font-size:clamp(34px,4.8vw,50px);
  line-height:1.2;
  margin:0;
  color:var(--brand) !important;
}

.breadcrumb-wrap{
  padding:22px 0 0;
}

.breadcrumb{
  margin:0;
  font-size:14px;
  color:#877b78;
}

.breadcrumb span{
  margin:0 8px;
}

.hero-readmore{
  margin-top:28px;
  color:var(--text);
}

.hero-readmore p{
  margin:0 0 16px;
  line-height:1.95;
}

.hero-readmore h3{
  margin:28px 0 14px;
  font-size:28px;
  line-height:1.45;
}

.read-more{
  margin-top:10px;
}

.read-more summary{
  list-style:none;
  display:inline-block;
  cursor:pointer;
  font-weight:700;
  color:var(--brand);
  border-bottom:1px solid rgba(200,66,61,.35);
  padding-bottom:2px;
}

.read-more summary::-webkit-details-marker{
  display:none;
}

.read-more summary::marker{
  content:"";
}

.read-more summary:hover{
  opacity:.75;
}

.read-more-content{
  margin-top:20px;
}

.read-more .close-text{
  display:none;
}

.read-more[open] .open-text{
  display:none;
}

.read-more[open] .close-text{
  display:inline;
}

.read-more-close-wrap{
  margin:28px 0 0;
}

.read-more-close{
  display:inline-block;
  font-weight:700;
  color:var(--brand);
  text-decoration:none;
  border-bottom:1px solid rgba(200,66,61,.35);
  padding-bottom:2px;
}

.read-more-close:hover{
  opacity:.75;
}

/* =====================================
   Footer
===================================== */

.site-footer{
  background:#7a625d !important;
  color:#f6efec !important;
  padding:44px 0 0;
}

.footer-upper{
  display:grid;
  grid-template-columns:1.1fr 1.9fr;
  gap:80px;
  padding-bottom:34px;
}

.footer-title{
  margin:0 0 8px;
  font-size:22px;
  font-weight:700;
  color:#ffffff !important;
}

.footer-text{
  margin:0;
  color:#ede1dc !important;
  font-size:14px;
  line-height:1.75;
}

.footer-menus{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:10px;
}

.footer-heading{
  margin:0 0 14px;
  padding-bottom:6px;
  font-size:15px;
  font-weight:700;
  color:#e8d8b8 !important;
  border-bottom:1px solid #e8d8b8;
}

.footer-col a{
  display:block;
  color:#f8f4f1 !important;
  opacity:.95;
  margin:5px 0;
  font-size:14px;
  line-height:1.6;
}

.footer-col a:hover{
  color:#ffffff !important;
  opacity:1;
}

.footer-bottom{
  background:#6b544f !important;
  border-top:1px solid rgba(255,255,255,.12) !important;
}

.footer-bottom-inner{
  min-height:52px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  color:#e9dbd6 !important;
  font-size:13px;
}

/* footer sns */

.footer-brand .footer-sns{
  display:flex !important;
  align-items:center !important;
  gap:10px !important;
  margin-top:18px !important;
  flex-wrap:wrap !important;
}

.footer-brand .footer-sns .footer-sns-link{
  display:inline-flex !important;
  align-items:center !important;
  justify-content:center !important;
  width:40px !important;
  height:40px !important;
  min-width:40px !important;
  min-height:40px !important;
  padding:0 !important;
  margin:0 !important;
  border:1px solid rgba(255,255,255,.32) !important;
  border-radius:50% !important;
  text-decoration:none !important;
  line-height:1 !important;
  background:transparent !important;
}

.footer-brand .footer-sns .footer-sns-link svg{
  display:block !important;
  width:18px !important;
  height:18px !important;
  min-width:18px !important;
  min-height:18px !important;
  fill:#ffffff !important;
}

.footer-brand .footer-sns .footer-sns-link:hover{
  transform:translateY(-1px);
  border-color:rgba(255,255,255,.65) !important;
  background:rgba(255,255,255,.08) !important;
}

/* =====================================
   Utility / small adjustments
===================================== */

.site-header .nav a.active,
.site-header .nav a.active span{
  color:var(--brand) !important;
  font-weight:700 !important;
}

#about-summary,
#about-purpose,
#about-history,
#guide-overview,
#guide-flow,
#guide-area{
  scroll-margin-top:90px;
}

.hero-actions .btn-white,
.support-actions .btn-outline{
  box-shadow:0 6px 18px rgba(80,55,50,.08);
}

/* =====================================
   Responsive - tablet
===================================== */

@media (max-width:1100px){
  .voice-grid,
  .project-grid,
  .join-grid{
    grid-template-columns:1fr;
  }

  .voice-grid-2{
    grid-template-columns:1fr;
  }

  .info-grid,
  .about-grid,
  .footer-upper{
    grid-template-columns:1fr;
  }

  .footer-menus{
    grid-template-columns:repeat(2,1fr);
  }
}

/* =====================================
   Responsive - mobile
===================================== */

@media (max-width:960px){
  .site-header{
    position:sticky;
    top:0;
    z-index:50;
  }

  .site-header .header-inner{
    position:relative;
    min-height:64px;
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:16px;
    padding:8px 0 6px;
  }

  .site-header .logo{
    flex:0 0 auto;
    display:flex;
    align-items:flex-end;
  }

  .site-header .logo-image{
    width:auto;
    height:44px;
    display:block;
  }

.site-header .menu-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  margin-left:auto;
  flex:0 0 auto;
  min-width:88px;
  min-height:44px;
  padding:0;
  position:relative;
  z-index:120;
  appearance:none;
  border:none;
  background:none;
  cursor:pointer;
  align-self:flex-end;
  transform:translateY(5px);
}

  .site-header .menu-toggle-text{
    display:inline-block;
    font-size:12px;
    line-height:1;
    letter-spacing:.04em;
    white-space:nowrap;
    min-width:3.8em;
    text-align:left;
    color:#6a5e5b;
  }

  .site-header .menu-toggle-bars{
    display:inline-block;
    width:34px;
    height:24px;
    position:relative;
    flex:0 0 auto;
  }

  .site-header .menu-toggle-bars span{
    position:absolute;
    left:0;
    width:100%;
    height:2px;
    margin:0;
    background:#5a4a47;
    border-radius:999px;
  }

  .site-header .menu-toggle-bars span:nth-child(1){
    top:0;
  }

  .site-header .menu-toggle-bars span:nth-child(2){
    top:9px;
  }

  .site-header .menu-toggle-bars span:nth-child(3){
    top:18px;
  }

  .site-header .nav{
    display:none;
  }

  .site-header .nav.open{
    display:flex;
    position:absolute;
    top:100%;
    right:0;
    left:auto;
    width:200px;
    margin-top:8px;
    background:#9b8780;
    border:1px solid rgba(255,255,255,.14);
    box-shadow:0 14px 34px rgba(65,40,38,.18);
    z-index:200;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    overflow:hidden;
  }

  .site-header .nav.open a{
    display:block;
    width:100%;
    box-sizing:border-box;
    padding:10px 0 8px;
    margin:0;
    text-align:left;
    line-height:1.3;
    color:#f5ece8;
    border:none;
    background:transparent;
    font-weight:600;
  }

  .site-header .nav.open a span{
    display:block;
    width:140px;
    margin:0 auto;
    padding:0;
    line-height:1.3;
    color:inherit;
    font-weight:inherit;
  }

  .site-header .nav.open a::after{
    content:"";
    display:block;
    width:140px;
    height:1px;
    margin:6px auto 0;
    background:rgba(255,255,255,.40);
  }

  .site-header .nav.open a:last-child::after{
    display:none;
  }

  .site-header .nav.open a:hover{
    color:#ffffff;
    background:rgba(255,255,255,.06);
  }

  .site-header .nav.open a.active,
  .site-header .nav.open a.active:hover,
  .site-header .nav.open a.active:focus{
    background:transparent;
    color:#f5ece8;
    font-weight:600;
    box-shadow:none;
  }

  .site-header .nav.open a.active span,
  .site-header .nav.open a.active:hover span,
  .site-header .nav.open a.active:focus span{
    color:inherit;
    font-weight:inherit;
    background:transparent;
    box-shadow:none;
  }

  .section{
    padding:56px 0;
  }

  .section-head{
    margin-bottom:24px;
  }

  .section-head h2{
    margin:0 0 6px;
    font-size:clamp(26px, 6vw, 34px);
    line-height:1.3;
  }

  .section h2{
    font-size:28px;
    margin:6px 0 14px;
    line-height:1.35;
  }

  .section-ja{
    font-size:26px;
    line-height:1.35;
  }

  .lead{
    font-size:15px;
    line-height:1.85;
  }

  .page-hero{
    padding:42px 0 28px;
  }

  .page-hero h2{
    font-size:clamp(30px, 7vw, 40px);
    line-height:1.25;
  }

  .breadcrumb-wrap{
    padding:14px 0 0;
  }

  .breadcrumb{
    font-size:13px;
  }

  .hero-readmore{
    margin-top:22px;
  }

  .hero-readmore h3{
    font-size:22px;
    margin:22px 0 12px;
  }

  .hero-readmore p{
    line-height:1.85;
  }
}

/* =====================================
   Responsive - small mobile
===================================== */

@media (max-width:767px){
  .footer-brand .footer-sns{
    gap:10px !important;
    margin-top:18px !important;
  }

  .footer-brand .footer-sns .footer-sns-link{
    width:38px !important;
    height:38px !important;
    min-width:38px !important;
    min-height:38px !important;
  }

  .footer-brand .footer-sns .footer-sns-link svg{
    width:17px !important;
    height:17px !important;
    min-width:17px !important;
    min-height:17px !important;
  }
}

@media (max-width:520px){
  .footer-menus{
    grid-template-columns:1fr;
  }

  .footer-bottom-inner{
    flex-direction:column;
    justify-content:center;
    padding:10px 0;
  }

  .section-ja{
    font-size:22px;
  }
}

/* =====================================
   Mobile menu open state
===================================== */

.menu-toggle .text-close{
  display:none;
}

.menu-toggle.is-open .text-open{
  display:none;
}

.menu-toggle.is-open .text-close{
  display:inline;
}

.menu-toggle.is-open .menu-toggle-bars span:nth-child(1){
  top:9px;
  transform:rotate(45deg);
}

.menu-toggle.is-open .menu-toggle-bars span:nth-child(2){
  opacity:0;
}

.menu-toggle.is-open .menu-toggle-bars span:nth-child(3){
  top:9px;
  transform:rotate(-45deg);
}

@media (max-width:960px){
  .site-header .menu-toggle .text-close{
    display:none !important;
  }

  .site-header .menu-toggle.is-open .text-open{
    display:none !important;
  }

  .site-header .menu-toggle.is-open .text-close{
    display:inline !important;
  }

  .site-header .menu-toggle.is-open .menu-toggle-bars span:nth-child(1){
    top:9px !important;
    transform:rotate(45deg) !important;
  }

  .site-header .menu-toggle.is-open .menu-toggle-bars span:nth-child(2){
    opacity:0 !important;
  }

  .site-header .menu-toggle.is-open .menu-toggle-bars span:nth-child(3){
    top:9px !important;
    transform:rotate(-45deg) !important;
  }
}

/* =====================================
   NEXT / Support section (common)
===================================== */

.support-box{
  max-width:960px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:28px;
  box-shadow:var(--shadow);
  padding:54px 40px;
  margin:0 auto;
  box-sizing:border-box;
}

.support-actions{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
  align-items:stretch;
  justify-content:center;
  margin-top:30px;
}

.support-actions .btn{
  width:220px;
  height:56px;
  padding:0 24px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  line-height:1;
  box-sizing:border-box;
  margin:0;
}

.support-actions .btn-primary,
.support-actions .btn-outline{
  margin:0;
  vertical-align:middle;
}

/* =====================================
   NEXT responsive
===================================== */

@media (max-width:960px){
  .support-box{
    padding:30px 20px;
  }

  .support-actions{
    gap:12px;
  }

  .support-actions .btn{
    width:100%;
    max-width:320px;
  }
}