:root{--ink:#18372f;--muted:#5c6964;--paper:#f7f4ea;--cream:#eee8d9;--deep:#183d49;--sea:#357184;--gold:#b77727;--line:rgba(24,55,47,.22);--page:760px;--wide:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:72px}body{margin:0;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;font-size:17px;line-height:1.9;overflow-x:hidden}img{display:block;max-width:100%;height:auto}figure{margin:0}a{color:inherit}h1,h2,h3,h4{margin:0 0 1.25rem;font-family:"Hiragino Mincho ProN","Yu Mincho",serif;line-height:1.35;text-wrap:balance}h1{font-size:clamp(2.45rem,5vw,5.4rem);letter-spacing:.01em}h2{font-size:clamp(2rem,4vw,3.6rem)}h3{font-size:clamp(1.35rem,2.5vw,2rem)}h4{font-size:clamp(1.25rem,2vw,1.65rem)}p{margin:0 0 1.15rem}.page,.page-wide{width:calc(100% - 48px);margin-inline:auto}.page{max-width:var(--page)}.page-wide{max-width:var(--wide)}.section{padding:clamp(5rem,10vw,9rem) 0}.prose>:last-child{margin-bottom:0}
.site-header{position:sticky;z-index:10;top:0;height:68px;border-bottom:1px solid var(--line);background:rgba(247,244,234,.94);backdrop-filter:blur(10px)}.header-inner{width:calc(100% - 40px);max-width:var(--wide);height:100%;margin-inline:auto;display:flex;align-items:center;justify-content:space-between}.brand{font-family:"Hiragino Mincho ProN","Yu Mincho",serif;font-weight:700;text-decoration:none;letter-spacing:.12em}.header-cta{min-height:44px;padding:.45rem 1.1rem;display:inline-flex;align-items:center;background:var(--ink);color:#fff;font-weight:700;line-height:1;text-decoration:none}
.hero{min-height:calc(100svh - 68px);position:relative;display:grid;align-items:end;color:#fff;background:var(--deep)}.hero-image,.hero-image:after{position:absolute;inset:0}.hero-image img{width:100%;height:100%;object-fit:cover;object-position:center 54%}.hero-image:after{content:"";background:linear-gradient(90deg,rgba(7,31,37,.82),rgba(7,31,37,.46) 52%,rgba(7,31,37,.12)),linear-gradient(0deg,rgba(7,31,37,.72),transparent 55%)}.hero-content{position:relative;z-index:1;padding-block:clamp(3rem,7vw,7rem)}.site-name{margin-bottom:1rem;font-size:.85rem;font-weight:800;letter-spacing:.25em}.hero h1{max-width:1000px}.hero-copy{margin:2rem 0;font-family:"Hiragino Mincho ProN","Yu Mincho",serif;font-size:clamp(1.05rem,1.6vw,1.35rem)}.hero-meta{margin-bottom:2rem;line-height:1.8}.hero-actions{display:flex;flex-wrap:wrap;gap:.75rem}.button{min-height:52px;padding:.65rem 1.25rem;display:inline-flex;align-items:center;justify-content:center;border:1px solid #fff;font-weight:700;line-height:1.4;text-decoration:none}.button.primary{background:#fff;color:var(--deep)}.button.secondary{background:rgba(7,31,37,.24);color:#fff}
.mystery-band{padding:clamp(4rem,8vw,7rem) 24px;background:var(--deep);color:#fff;text-align:center}.mystery-band p{margin:0;font-family:"Hiragino Mincho ProN","Yu Mincho",serif;font-size:clamp(1.35rem,3vw,2.5rem);font-weight:700}.origin{background:var(--cream)}.text-image-grid{max-width:1120px;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);gap:clamp(3rem,8vw,8rem);align-items:center}.portrait-media img{width:100%;aspect-ratio:3/4;object-fit:cover}.signature{margin-top:2.5rem;color:var(--muted);font-size:.92rem}.value{background:var(--paper)}.why-now{background:#e7edef}.diagram{margin-top:clamp(3rem,6vw,6rem)}.diagram img{width:100%}.diagram-b a{display:block;cursor:zoom-in}
.program-inner{max-width:1060px}.program-inner>h2{margin-bottom:clamp(3rem,6vw,6rem)}.prequest{max-width:760px;margin-bottom:clamp(5rem,9vw,8rem);padding-left:clamp(1.25rem,3vw,2.5rem);border-left:3px solid var(--gold)}.day-card{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2.5rem,6vw,6rem);align-items:center;padding:clamp(4rem,8vw,7rem) 0;border-top:1px solid var(--line)}.day-card figure img{width:100%;aspect-ratio:4/3;object-fit:cover}.day2-placeholder{aspect-ratio:4/3;border:1px solid var(--line);background:linear-gradient(145deg,#dfded6,#cacbc5)}.fieldwork{margin-inline:calc(50% - 50vw);padding:clamp(5rem,10vw,9rem) max(24px,calc((100vw - 760px)/2));background:#dfe6dc}.day-three{max-width:760px;margin:clamp(5rem,10vw,9rem) auto 0}
.apply{color:#fff;background:var(--deep)}.apply .page{max-width:920px}.apply-grid{margin:3rem 0;border-top:1px solid rgba(255,255,255,.3)}.apply-grid div{display:grid;grid-template-columns:12rem 1fr;gap:2rem;padding:1.2rem 0;border-bottom:1px solid rgba(255,255,255,.3)}.apply-grid dt{font-weight:800}.apply-grid dd{margin:0}.disabled-button{min-height:52px;padding:.65rem 1.25rem;display:inline-flex;align-items:center;background:#9a9f9a;color:#fff;font-weight:700;line-height:1.4}.contact{margin:2.5rem 0}.destinations{margin-top:4rem;padding-top:3rem;border-top:1px solid rgba(255,255,255,.3)}.destinations li{margin-bottom:.8rem}
.profile{background:var(--cream)}.profile-grid{max-width:1050px;display:grid;grid-template-columns:minmax(240px,35fr) minmax(0,65fr);gap:clamp(3rem,7vw,7rem);align-items:start}.profile figure img{width:100%;aspect-ratio:3/4;object-fit:cover;object-position:center top}.source-list{margin-top:4rem}.source-list article{padding:2rem 0;border-top:1px solid var(--line)}.source-list h3{font-size:1.25rem}.source-list a{overflow-wrap:anywhere;color:var(--sea)}.faq{background:#eef0ea}.faq-grid{max-width:960px;display:grid;grid-template-columns:.55fr 1.45fr;gap:clamp(3rem,8vw,8rem)}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{min-height:64px;padding:.8rem 2.5rem .8rem 0;position:relative;display:flex;align-items:center;font-weight:700;line-height:1.6;cursor:pointer;list-style:none}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:.25rem;color:var(--sea);font-size:1.5rem}details[open] summary:after{content:"−"}details>p,details>div{margin:0;padding:0 2.5rem 1.5rem 0;color:var(--muted)}details>div p:last-child{margin-bottom:0}.footer{padding:clamp(4rem,8vw,7rem) 0;color:#fff;background:#102d31}.footer-grid{max-width:960px;display:grid;grid-template-columns:1fr auto;gap:3rem;align-items:end}.footer h2{font-size:1.7rem}.inverse{background:transparent;border:1px solid rgba(255,255,255,.55)}:focus-visible{outline:3px solid #efb54a;outline-offset:3px}
@media(max-width:760px){body{font-size:16px}.page,.page-wide{width:calc(100% - 40px)}.site-header{height:64px}html{scroll-padding-top:68px}.hero{min-height:780px;align-items:start}.hero-image{height:46%}.hero-image:after{background:linear-gradient(0deg,var(--deep),rgba(10,42,49,.18) 55%,rgba(10,42,49,.08))}.hero-image img{object-position:center 45%}.hero-content{min-height:780px;padding-block:2.5rem;display:flex;flex-direction:column;justify-content:flex-end}.hero h1{font-size:clamp(2.1rem,10.5vw,3.1rem);line-height:1.3}.desktop-break{display:none}.hero-copy{margin:1rem 0;font-size:.98rem}.hero-copy p{margin-bottom:.3rem}.hero-meta{margin-bottom:1.1rem;font-size:.92rem}.hero-actions{display:grid;grid-template-columns:1fr 1fr;gap:.55rem}.button{min-height:48px;padding:.55rem .6rem;font-size:.86rem}.text-image-grid,.day-card,.profile-grid,.faq-grid,.footer-grid{grid-template-columns:1fr}.text-image-grid{gap:3rem}.origin .portrait-media{max-width:420px}.day-card .day-copy{order:1}.day-card figure,.day-two .day2-placeholder{order:2}.day-card{gap:2.5rem}.apply-grid div{grid-template-columns:1fr;gap:.25rem}.faq-grid{gap:2rem}}
@media(max-width:420px){.header-inner{width:calc(100% - 28px)}.page,.page-wide{width:calc(100% - 32px)}h2{font-size:clamp(1.85rem,9vw,2.35rem)}h3{font-size:1.35rem}.hero,.hero-content{min-height:780px}.hero h1{font-size:2.35rem}.mystery-band{padding-inline:16px}.fieldwork{padding-inline:16px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* v5.1 brand restoration and hero regression fixes */
.brand{display:block;font:inherit;letter-spacing:normal}
.brand-logo{display:block;width:120px;height:auto}
.hero{min-height:0;color:var(--ink);background:var(--paper);display:block}
.hero-inner{padding-block:clamp(2rem,5vw,5rem);display:grid;grid-template-columns:minmax(0,.95fr) minmax(420px,1.05fr);grid-template-areas:"copy visual" "info visual";gap:1.5rem clamp(2.5rem,5vw,4.5rem);align-items:start}
.hero-copy-panel{grid-area:copy;padding-top:clamp(1rem,4vw,4rem)}
.hero h1{max-width:620px;font-size:clamp(2.45rem,3.75vw,3.9rem);white-space:nowrap}
.hero-copy{margin:1.75rem 0 0;font-size:clamp(1rem,1.35vw,1.22rem)}
.hero-copy p:last-child{margin-bottom:0}
.hero-visual{grid-area:visual}
.hero-visual>img{width:100%;height:auto;aspect-ratio:1/1;object-fit:cover}
.hero-observation{min-height:48px;padding:.45rem .15rem 0;display:flex;align-items:center;gap:.75rem;background:var(--paper)}
.hero-observation-mark{flex:0 0 auto;width:38px;height:auto}
.hero-observation-copy{display:flex;flex-direction:column;line-height:1.3}
.observation-series{font-size:.69rem;font-weight:800;letter-spacing:.12em}
.observation-region{font-size:.66rem;letter-spacing:.16em}
.hero-info{grid-area:info;align-self:end}
.hero-meta{margin-bottom:1.3rem;line-height:1.75}
.hero-actions{display:flex;flex-wrap:wrap;gap:.7rem}
.button{border-color:var(--deep)}
.button.primary{background:var(--deep);color:#fff}
.button.secondary{background:transparent;color:var(--deep)}
.about{background:var(--paper)}
.about .page{max-width:780px}
.about h2{margin-bottom:2rem}
.footer-brand-logo{width:104px;height:auto;margin-bottom:2rem}

@media(max-width:820px){
  .brand-logo{width:112px}
  .hero,.hero-content{min-height:0}
  .hero-inner{padding-block:1.25rem 2rem;display:flex;flex-direction:column;gap:0}
  .hero-copy-panel{padding-top:0}
  .hero h1{font-size:clamp(1.92rem,8.75vw,2.18rem);line-height:1.28;white-space:nowrap}
  .hero-copy{margin:.7rem 0 .9rem;font-size:.9rem;line-height:1.65}
  .hero-copy p{margin-bottom:.15rem}
  .hero-visual{width:100%}
  .hero-visual>img{width:100%;height:clamp(170px,48vw,220px);aspect-ratio:auto;object-fit:cover;object-position:center 54%}
  .hero-observation{min-height:39px;padding-top:.25rem;gap:.6rem}
  .hero-observation-mark{width:32px}
  .observation-series{font-size:.62rem}
  .observation-region{font-size:.6rem}
  .hero-info{width:100%;margin-top:.7rem}
  .hero-meta{margin-bottom:.65rem;font-size:.82rem;line-height:1.55}
  .hero-actions{display:grid;grid-template-columns:1fr 1fr;gap:.5rem}
  .button{min-height:44px;padding:.45rem;font-size:.79rem}
  .text-image-grid,.day-card,.profile-grid,.faq-grid,.footer-grid{grid-template-columns:1fr}
  .day-card .day-copy{order:1}
  .day-card figure,.day-two .day2-placeholder{order:2}
  .day-copy h3{font-size:1.3rem;overflow-wrap:anywhere}
  .footer-brand-logo{width:96px}
}
@media(max-width:350px){.hero h1{font-size:1.78rem}.hero-copy{font-size:.83rem}.hero-meta{font-size:.76rem}.button{font-size:.72rem}}