/* =========================================================
   小金沢連嶺 — editorial photo essay
   ========================================================= */

:root{
  --paper:#f1ede4;
  --paper-2:#e7e1d4;
  --ink:#15160f;
  --ink-soft:#5a5b52;
  --night:#0b0c0a;
  --night-2:#111310;
  --night-3:#080907;
  --gold:#bd9a68;
  --gold-soft:#d8c3a0;
  --gold-ink:#86653c;
  --line:rgba(21,22,15,.16);
  --line-light:rgba(241,237,228,.16);
  --serif:"Hiragino Mincho ProN","Hiragino Mincho Pro","Yu Mincho","YuMincho","Noto Serif JP",serif;
  --sans:"Helvetica Neue","Helvetica","Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
  --ease:cubic-bezier(.16,1,.3,1);
  --pad:clamp(1.25rem,4vw,3rem);
  --head-h:74px;
}

*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:var(--head-h);
}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.95;
  letter-spacing:.035em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

img,video{display:block;max-width:100%}
img{height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
::selection{background:var(--gold);color:#12130e}
:focus-visible{outline:2px solid var(--gold);outline-offset:4px}

.skip{
  position:fixed;
  left:1rem;
  top:-4rem;
  z-index:300;
  padding:.7rem 1.1rem;
  background:var(--paper);
  color:var(--ink);
  font-size:12px;
  letter-spacing:.14em;
  border:1px solid var(--line);
  transition:top .3s var(--ease);
}
.skip:focus{top:1rem}

/* ---------- type ---------- */

.eyebrow{
  margin:0;
  font-family:var(--sans);
  font-size:12px;
  font-weight:500;
  letter-spacing:.3em;
  line-height:1.6;
  text-transform:uppercase;
  color:var(--ink-soft);
}
.eyebrow--light{color:rgba(241,237,228,.62)}

/* numbered section rule */
.sec-mark{
  display:flex;
  align-items:center;
  gap:clamp(.8rem,1.6vw,1.15rem);
  width:100%;
  margin:0;
  font-weight:400;
}
.sec-no{
  font-family:var(--serif);
  font-size:11.5px;
  letter-spacing:.18em;
  color:var(--gold-ink);
  font-variant-numeric:tabular-nums;
}
.sec-rule{
  flex:1;
  height:1px;
  background:linear-gradient(90deg,rgba(134,101,60,.45),rgba(21,22,15,.16) 58%,rgba(21,22,15,0));
}
.sec-label{
  font-size:11px;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--ink-soft);
  white-space:nowrap;
}
.sec-mark--light .sec-no{color:var(--gold-soft)}
.sec-mark--light .sec-rule{background:linear-gradient(90deg,rgba(216,195,160,.6),rgba(241,237,228,.18) 58%,rgba(241,237,228,0))}
.sec-mark--light .sec-label{color:rgba(241,237,228,.62)}

h1,h2,h3{
  font-family:var(--serif);
  font-weight:400;
  letter-spacing:.06em;
  line-height:1.5;
  margin:0;
}

.lede{font-size:17px;line-height:2.15;letter-spacing:.05em;margin:0 0 1.4em}

.caption{
  display:flex;
  align-items:baseline;
  gap:.9em;
  margin:1.1rem 0 0;
  font-size:13px;
  letter-spacing:.1em;
  line-height:1.7;
  color:var(--ink-soft);
}
.caption span{
  flex:none;
  font-size:11.5px;
  letter-spacing:.2em;
  color:var(--gold-ink);
  font-variant-numeric:tabular-nums;
}
.caption--light{color:rgba(241,237,228,.66)}
.caption--light span{color:var(--gold-soft)}

.pull{
  font-family:var(--serif);
  font-size:clamp(1.25rem,1.9vw,1.6rem);
  line-height:2.15;
  letter-spacing:.08em;
  color:var(--ink);
  margin:0;
}
.pull--light{color:rgba(241,237,228,.88)}


/* Japanese line breaking: avoid awkward breaks inside short words */
@supports (word-break:auto-phrase){
  p,li,dd,dt,h2,h3{word-break:auto-phrase;line-break:strict}
}
.nw{white-space:nowrap}

/* ---------- layout ---------- */

.wrap{width:min(1180px,calc(100% - var(--pad)*2));margin-inline:auto}
.narrow{width:min(720px,100%)}

/* ---------- progress / header ---------- */

.progress{
  position:fixed;
  inset:0 0 auto;
  height:2px;
  background:transparent;
  z-index:120;
  pointer-events:none;
}
.progress span{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,rgba(189,154,104,.35),var(--gold));
  transition:width .1s linear;
}

.site-head{
  position:fixed;
  inset:0 0 auto;
  z-index:100;
  height:var(--head-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 var(--pad);
  color:var(--paper);
  transition:background .5s var(--ease),backdrop-filter .5s var(--ease),border-color .5s var(--ease),color .5s var(--ease);
  border-bottom:1px solid transparent;
}
.site-head.is-scrolled{
  background:rgba(9,10,8,.72);
  -webkit-backdrop-filter:blur(14px) saturate(1.1);
  backdrop-filter:blur(14px) saturate(1.1);
  border-bottom-color:rgba(241,237,228,.09);
}
.site-head.is-light{
  background:rgba(241,237,228,.86);
  color:var(--ink);
  border-bottom-color:rgba(21,22,15,.1);
}
.site-head.is-light .site-nav a{color:rgba(21,22,15,.62)}
.site-head.is-light .site-nav a:hover{color:var(--ink)}

/* 写真の上では、ヘッダーの文字が背景に沈む。上端に薄い暗幕を敷き、
   文字には影を落として、明るい空や木の葉の上でも読めるようにする。 */
.site-head::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:calc(var(--head-h) + 40px);
  background:linear-gradient(180deg,rgba(8,9,7,.74) 0%,rgba(8,9,7,.46) 58%,rgba(8,9,7,0) 100%);
  pointer-events:none;
  transition:opacity .35s var(--ease);
  /* 暗幕は文字の「後ろ」に敷く。z-index が auto のままだと、位置指定のない
     サイト名（.brand）より後に描画されて、ロゴだけが沈んで見える。 */
  z-index:-1;
}
.site-head.is-scrolled::before,
.site-head.is-light::before,
.menu-open .site-head::before{opacity:0}
.site-head:not(.is-light) .brand-jp,
.site-head:not(.is-light) .site-nav a,
.site-head:not(.is-light) .menu-btn{
  text-shadow:0 1px 3px rgba(0,0,0,.75),0 2px 16px rgba(0,0,0,.5);
}

.brand{display:flex;align-items:baseline;gap:.85rem;line-height:1}
.brand-jp{font-family:var(--serif);font-size:15px;letter-spacing:.22em}

.site-nav{display:flex;gap:clamp(1.1rem,2.6vw,2.4rem);margin-left:auto}
.site-nav a{
  position:relative;
  font-size:11.5px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:rgba(241,237,228,.7);
  padding:.4rem 0;
  transition:color .35s var(--ease);
}
.site-nav a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:100%;height:1px;
  background:var(--gold);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .5s var(--ease);
}
.site-nav a:hover{color:var(--paper)}
.site-nav a:hover::after{transform:scaleX(1)}
/* いま見ているセクション */
.site-nav a.is-current{color:var(--paper)}
.site-nav a.is-current::after{transform:scaleX(1);background:var(--gold)}
.site-head.is-light .site-nav a.is-current{color:var(--ink)}

/* ---------- menu button ---------- */

.menu-btn{
  flex:none;
  display:inline-flex;
  align-items:center;
  gap:.62rem;
  margin-left:clamp(1rem,2vw,1.8rem);
  padding:.55rem .95rem .5rem;
  border:1px solid rgba(241,237,228,.24);
  border-radius:999px;
  background:transparent;
  color:rgba(241,237,228,.76);
  font-family:var(--sans);
  font-size:10.5px;
  letter-spacing:.26em;
  text-transform:uppercase;
  cursor:pointer;
  transition:color .35s var(--ease),border-color .35s var(--ease),background .35s var(--ease);
}
.menu-btn:hover{color:var(--paper);border-color:var(--gold)}
.site-head.is-light .menu-btn{color:rgba(21,22,15,.66);border-color:rgba(21,22,15,.2)}
.site-head.is-light .menu-btn:hover{color:var(--ink);border-color:var(--gold-ink)}
.menu-btn-lines{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:3px;
  width:14px;
  height:9px;
}
.menu-btn-lines i{
  display:block;
  height:1px;
  background:currentColor;
  transition:transform .4s var(--ease);
}
.menu-btn[aria-expanded="true"] .menu-btn-lines i:first-child{transform:translateY(2px) rotate(45deg)}
.menu-btn[aria-expanded="true"] .menu-btn-lines i:last-child{transform:translateY(-2px) rotate(-45deg)}

/* ---------- index panel ---------- */

.menu-open, .menu-open body{overflow:hidden}

.site-menu{position:fixed;inset:0;z-index:90}
.site-menu[hidden]{display:none}
.site-menu-scrim{
  position:absolute;
  inset:0;
  border:0;
  padding:0;
  width:100%;
  background:rgba(8,9,7,.52);
  -webkit-backdrop-filter:blur(3px);
  backdrop-filter:blur(3px);
  opacity:0;
  cursor:default;
  transition:opacity .5s var(--ease);
}
.site-menu.is-open .site-menu-scrim{opacity:1}
.site-menu-panel{
  position:absolute;
  inset:0 0 auto;
  max-height:100svh;
  overflow-y:auto;
  padding:calc(var(--head-h) + 1.2rem) var(--pad) clamp(2.2rem,5vh,3.2rem);
  background:var(--paper);
  color:var(--ink);
  border-bottom:1px solid var(--line);
  box-shadow:0 24px 60px rgba(8,9,7,.18);
  opacity:0;
  transform:translateY(-14px);
  transition:opacity .4s var(--ease),transform .55s var(--ease);
}
.site-menu.is-open .site-menu-panel{opacity:1;transform:none}

.site-menu-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  width:min(1180px,100%);
  margin:0 auto;
  padding-bottom:1rem;
  border-bottom:1px solid var(--line);
}
.site-menu-head p{
  margin:0;
  font-size:10px;
  letter-spacing:.32em;
  text-transform:uppercase;
  color:var(--gold-ink);
}
.site-menu-close{
  border:0;
  background:none;
  padding:.2rem .1rem;
  font-family:var(--sans);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--ink-soft);
  cursor:pointer;
  transition:color .3s var(--ease);
}
.site-menu-close:hover{color:var(--ink)}

.site-menu-cols{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);
  gap:clamp(1.6rem,4vw,4rem);
  width:min(1180px,100%);
  margin:clamp(1.6rem,3vh,2.2rem) auto 0;
}
.site-menu-label{
  margin:0;
  font-size:10px;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--ink-soft);
}
.site-menu-list{
  list-style:none;
  margin:.7rem 0 0;
  padding:0;
}
.site-menu-list a{
  display:block;
  padding:.72rem 0 .78rem;
  border-top:1px solid var(--line);
  color:var(--ink);
  transition:color .3s var(--ease),padding-left .4s var(--ease);
}
/* 本文中のリンク（メニューではなく、文中で行き先を示すもの） */
.inline-link{
  color:var(--gold-ink);
  border-bottom:1px solid rgba(134,101,60,.45);
  padding-bottom:.05em;
  transition:border-color .3s var(--ease),color .3s var(--ease);
}
.inline-link:hover{border-color:var(--gold-ink);color:var(--ink)}

.site-menu-list li:last-child a{border-bottom:1px solid var(--line)}
.site-menu-list a:hover{color:var(--gold-ink);padding-left:.35rem}
.site-menu-list a.is-current{color:var(--gold-ink)}
/* 見出しと、開いたら何が見えるかの一行 */
.sm-title{
  display:block;
  font-family:var(--serif);
  font-size:15.5px;
  line-height:1.5;
  letter-spacing:.06em;
}
.sm-desc{
  display:block;
  margin-top:.22rem;
  font-family:var(--sans);
  font-size:11px;
  line-height:1.7;
  letter-spacing:.05em;
  color:var(--ink-soft);
}
.site-menu-list a.is-current .sm-desc{color:var(--gold-ink);opacity:.8}

/* --- 目次の入れ子（エリア／テーマ／山特集） ---
   5つの行き先を平らに並べるだけだと、10の山域と8つのテーマに行き着けない。
   節ごとに開いて、中身まで目次で見えるようにしている。 */
.site-menu-list .sm-group{border-top:1px solid var(--line)}
.site-menu-list .sm-group:last-child{border-bottom:1px solid var(--line)}
.site-menu-list .sm-details > summary{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:0 .7rem;
  padding:.72rem 0 .78rem;
  cursor:pointer;
  list-style:none;
  transition:color .3s var(--ease);
}
.site-menu-list .sm-details > summary::-webkit-details-marker{display:none}
.site-menu-list .sm-details > summary::marker{content:""}
.site-menu-list .sm-details > summary:hover{color:var(--gold-ink)}
.site-menu-list .sm-details > summary .sm-desc{margin-top:0;flex:1 1 auto}
.sm-mark{
  width:6px;
  height:6px;
  margin-left:auto;
  border-right:1.2px solid currentColor;
  border-bottom:1.2px solid currentColor;
  transform:rotate(45deg) translate(-1px,-1px);
  opacity:.5;
  transition:transform .35s var(--ease);
}
.sm-details[open] > summary .sm-mark{transform:rotate(-135deg) translate(-1px,-1px)}
.sm-sub{
  list-style:none;
  margin:0 0 .55rem;
  padding:0 0 0 .85rem;
  border-left:1px solid var(--line);
}
.site-menu-list .sm-sub a{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:1rem;
  padding:.34rem 0;
  border:0;
  color:var(--ink-soft);
  transition:color .3s var(--ease),padding-left .35s var(--ease);
}
.site-menu-list .sm-sub a:hover{color:var(--gold-ink);padding-left:.25rem}
.site-menu-list .sm-sub li:last-child a{border-bottom:0}
.sm-sub-title{font-family:var(--sans);font-size:12.5px;letter-spacing:.04em}
.sm-note{
  font-family:var(--sans);
  font-size:10.5px;
  letter-spacing:.06em;
  color:rgba(21,22,15,.4);
  white-space:nowrap;
}
.sm-subhead{
  margin:.8rem 0 .15rem;
  font-family:var(--sans);
  font-size:10px;
  letter-spacing:.24em;
  color:var(--gold-ink);
}
.sm-subhead:first-child{margin-top:.15rem}
.sm-sub--deep{padding-left:.85rem;margin-left:.05rem}
.sm-nest > .sm-details > summary{padding:.34rem 0}
.sm-nest > .sm-details > summary .sm-title{font-family:var(--sans);font-size:12.5px}
.sm-nest > .sm-details > summary .sm-desc{font-size:10.5px}
@media (min-width:640px){
  .sm-group--areas .sm-sub{
    display:grid;
    grid-template-columns:1fr 1fr;
    column-gap:1.2rem;
    align-items:baseline;
  }
  .sm-group--areas .sm-sub > li:first-child{grid-column:1/-1}
}

.site-menu-foot{
  width:min(1180px,100%);
  margin:clamp(1.6rem,3vh,2.2rem) auto 0;
  font-size:10.5px;
  letter-spacing:.18em;
  color:var(--ink-soft);
}

/* header stays above the panel and turns to paper while the index is open */
.menu-open .site-head{
  background:var(--paper);
  color:var(--ink);
  border-bottom-color:var(--line);
  -webkit-backdrop-filter:none;
  backdrop-filter:none;
}
.menu-open .site-head .site-nav a{color:rgba(21,22,15,.62)}
.menu-open .site-head .site-nav a:hover{color:var(--ink)}
.menu-open .site-head .menu-btn{color:var(--ink);border-color:rgba(21,22,15,.22)}

/* ---------- スマホの固定メニュー ---------- */

.bottom-nav{display:none}

@media (max-width:820px){
  .bottom-nav{
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:86;
    display:grid;
    grid-template-columns:repeat(5,1fr);
    padding-bottom:calc(env(safe-area-inset-bottom) + 4px);
    background:rgba(9,10,8,.87);
    -webkit-backdrop-filter:blur(18px) saturate(1.15);
    backdrop-filter:blur(18px) saturate(1.15);
    border-top:1px solid rgba(241,237,228,.12);
    transition:transform .45s var(--ease),opacity .3s var(--ease);
  }
  .bn-item{
    position:relative;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:.28rem;
    padding:.6rem .1rem .52rem;
    color:rgba(241,237,228,.6);
    font-size:9.5px;
    line-height:1;
    letter-spacing:.06em;
    transition:color .3s var(--ease);
  }
  .bn-icon{
    width:20px;height:20px;
    opacity:.86;
    transition:opacity .3s var(--ease),transform .45s var(--ease);
  }
  .bn-label{white-space:nowrap}
  .bn-item::after{
    content:"";
    position:absolute;
    left:50%;bottom:0;
    width:16px;height:2px;
    margin-left:-8px;
    background:var(--gold);
    transform:scaleX(0);
    transition:transform .45s var(--ease);
  }
  .bn-item.is-current{color:var(--gold-soft)}
  .bn-item.is-current .bn-icon{opacity:1;transform:translateY(-1px)}
  .bn-item.is-current::after{transform:scaleX(1)}
  .menu-open .bottom-nav{transform:translateY(110%);opacity:0;pointer-events:none}
  /* 画面下のメニューと重なるので、右上のボタンはスマホでは出さない
     （フッターにも「ページの先頭へ」がある） */
  .to-top{display:none}
}

/* ---------- back to top ---------- */

.to-top{
  position:fixed;
  right:clamp(1rem,2.4vw,1.9rem);
  bottom:clamp(1rem,2.4vw,1.9rem);
  z-index:85;
  display:grid;
  place-items:center;
  width:46px;
  height:46px;
  border:1px solid rgba(21,22,15,.16);
  border-radius:50%;
  background:rgba(241,237,228,.88);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  color:var(--ink);
  font-family:var(--sans);
  font-size:14px;
  line-height:1;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  box-shadow:0 8px 26px rgba(21,22,15,.1);
  transition:opacity .45s var(--ease),transform .45s var(--ease),visibility .45s,border-color .3s var(--ease),background .3s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--gold-ink);background:var(--paper)}
.to-top:focus-visible{outline:2px solid var(--gold-ink);outline-offset:3px}

.hero .eyebrow--light{
  color:rgba(248,245,238,.92);
  text-shadow:0 1px 2px rgba(8,9,7,.65),0 2px 26px rgba(8,9,7,.85);
}

/* ---------- hero ---------- */

.hero{
  position:relative;
  min-height:100svh;
  display:flex;
  align-items:flex-end;
  overflow:hidden;
  background:var(--night);
  color:var(--paper);
  isolation:isolate;
}
.hero-media{position:absolute;inset:-6% 0;z-index:0}
.hero-media img{
  width:100%;height:100%;
  object-fit:cover;
  object-position:50% 46%;
  transform:scale(1.02);
  will-change:transform;
}
/* 明るい空の上でも見出しが沈まないように、下側をしっかり落とす。
   z-index は正の値で重ねる（負の z-index は iOS Safari で描画されないことがある）。 */
.hero-veil{
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(180deg,rgba(8,9,7,.62) 0%,rgba(8,9,7,.16) 28%,rgba(8,9,7,.3) 50%,rgba(8,9,7,.7) 74%,rgba(8,9,7,.92) 100%),
    radial-gradient(120% 80% at 70% 30%,rgba(0,0,0,0) 40%,rgba(0,0,0,.32) 100%),
    radial-gradient(92% 76% at 6% 86%,rgba(8,9,7,.6),rgba(8,9,7,0) 64%);
}
.hero::after{
  content:"";
  position:absolute;inset:0;z-index:0;
  pointer-events:none;
  opacity:.05;
  mix-blend-mode:soft-light;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E");
}
.hero-inner{
  position:relative;z-index:2;
  padding-bottom:clamp(4rem,9vh,7rem);
  width:min(1180px,calc(100% - var(--pad)*2));
}
.hero-title{
  margin:.9rem 0 1.6rem;
  font-size:clamp(3.4rem,10.5vw,8.6rem);
  line-height:1.02;
  letter-spacing:.05em;
  font-weight:400;
}
.hero-title span{display:block}
.hero-title span:last-child{padding-left:.06em}
.hero-sub{
  margin:0 0 2.2rem;
  font-family:var(--serif);
  font-size:clamp(1rem,1.9vw,1.28rem);
  line-height:2.25;
  letter-spacing:.12em;
  color:rgba(241,237,228,.9);
}
.hero-meta{
  display:flex;
  align-items:center;
  gap:1rem;
  font-size:12.5px;
  letter-spacing:.2em;
  color:rgba(241,237,228,.8);
}
.hero-meta .dot{width:22px;height:1px;background:rgba(241,237,228,.35)}

/* 写真の上に載る文字は、必ず影を落としてから載せる */
.hero-title,
.hero-sub,
.hero-meta,
.scroll-cue,
.hero .eyebrow{
  text-shadow:0 1px 2px rgba(0,0,0,.55),0 2px 22px rgba(0,0,0,.55);
}

.scroll-cue{
  position:absolute;
  right:var(--pad);
  bottom:clamp(4rem,9vh,7rem);
  z-index:2;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:1rem;
  font-size:10px;
  letter-spacing:.3em;
  color:rgba(241,237,228,.55);
}
.scroll-line{
  display:block;
  width:1px;height:64px;
  background:linear-gradient(180deg,rgba(241,237,228,.1),rgba(241,237,228,.6));
  transform-origin:top;
  animation:scrollLine 2.6s var(--ease) infinite;
}
@keyframes scrollLine{
  0%{transform:scaleY(0);opacity:0}
  35%{opacity:1}
  70%{transform:scaleY(1);opacity:1}
  100%{transform:scaleY(1);opacity:0}
}

/* hero entrance */
.hero-inner > *{animation:heroIn 1.4s var(--ease) both}
.hero-inner > .eyebrow{animation-delay:.15s}
.hero-inner > .hero-title{animation-delay:.3s}
.hero-inner > .hero-sub{animation-delay:.5s}
.hero-inner > .hero-meta{animation-delay:.65s}
.scroll-cue{animation:heroIn 1.4s var(--ease) .9s both}
@keyframes heroIn{
  from{opacity:0;transform:translateY(26px)}
  to{opacity:1;transform:none}
}

/* ---------- intro ---------- */

.intro{
  background:var(--paper);
  padding:clamp(5.5rem,12vh,10rem) 0 clamp(4rem,9vh,7rem);
}
.intro-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:2.4rem var(--pad);
  align-items:start;
}
.intro-grid > .eyebrow{grid-column:1/-1}
.intro-grid > .sec-mark{grid-column:1/-1}
.intro-title{
  grid-column:1/8;
  margin-top:1rem;
  font-size:clamp(2rem,4.4vw,3.5rem);
  line-height:1.75;
}
.intro-body{
  grid-column:9/13;
  align-self:end;
  font-size:15px;
  line-height:2.2;
  color:var(--ink-soft);
}
.intro-body p{margin:0 0 1.5em}
.intro-body p:last-child{margin-bottom:0}

.intro-meta{
  grid-column:1/-1;
  display:flex;
  flex-wrap:wrap;
  gap:1.6rem clamp(2rem,5vw,4.5rem);
  margin:clamp(3rem,7vh,5.5rem) 0 0;
}
.intro-meta div{display:flex;flex-direction:column;gap:.35rem}
.intro-meta dt{font-size:11px;letter-spacing:.28em;color:var(--gold-ink);text-transform:uppercase}
.intro-meta dd{margin:0;font-family:var(--serif);font-size:14.5px;letter-spacing:.1em}

/* ---------- chapter ---------- */

.chapter{background:var(--paper);padding-bottom:clamp(1rem,3vh,2rem)}
.chapter:has(+ .film){padding-bottom:0}
.chapter--dawn{background:var(--night-2);color:var(--paper)}

.chapter-head{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:1.5rem var(--pad);
  align-items:end;
  padding:clamp(5rem,10vh,8rem) 0 clamp(3rem,6vh,5rem);
  border-top:1px solid var(--line);
}
.chapter--dawn .chapter-head{border-top-color:var(--line-light)}
.chapter-no{
  grid-column:1/2;
  font-family:var(--serif);
  font-size:clamp(2.6rem,4.5vw,4rem);
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1px var(--gold-ink);
  letter-spacing:.02em;
}
.chapter--dawn .chapter-no{-webkit-text-stroke-color:var(--gold)}
.chapter-title{grid-column:2/8}
.chapter-title h2{
  margin-top:.55rem;
  font-size:clamp(2.4rem,5.4vw,4.2rem);
  line-height:1.3;
}
.chapter-lead{
  grid-column:9/13;
  margin:0 0 .4rem;
  font-family:var(--serif);
  font-size:clamp(.95rem,1.4vw,1.1rem);
  line-height:2.1;
  letter-spacing:.1em;
  text-align:right;
  color:var(--ink-soft);
}
.chapter--dawn .chapter-lead{color:rgba(241,237,228,.6)}
.chapter--dawn .chapter-title .eyebrow{color:rgba(241,237,228,.5)}

/* ---------- figures ---------- */

figure{margin:0}
figure img{width:100%}

.figure-wide{
  width:100%;
  margin:clamp(3.5rem,8vh,6.5rem) 0;
}
.figure-wide img{
  width:100%;
  max-height:86vh;
  object-fit:cover;
}
.figure-wide .caption{
  width:min(1180px,calc(100% - var(--pad)*2));
  margin-inline:auto;
  margin-top:1.1rem;
}
.figure-wide--flush{margin-top:clamp(2.5rem,6vh,4rem)}
.figure-wide--flush img{max-height:none}

.landmark{
  width:min(980px,100%);
  margin:clamp(4rem,9vh,7rem) auto;
}

.split{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:2rem var(--pad);
  align-items:center;
  margin:clamp(3rem,7vh,5.5rem) 0;
}
.split-text{
  grid-column:1/5;
  font-size:15px;
  line-height:2.2;
  color:var(--ink-soft);
}
.split-text p{margin:0 0 1.3em}
.split-text .lede{color:var(--ink)}
.split-text .eyebrow{margin-bottom:1.2rem}
.split-media{grid-column:6/13}

.duo{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(1.5rem,4vw,4rem);
  align-items:center;
  margin:clamp(4rem,9vh,7rem) 0;
}
.duo figure{width:100%}
.duo .pull{padding:0 clamp(0rem,3vw,2.5rem)}

/* ---------- camp ---------- */

.camp{
  background:var(--night-2);
  color:var(--paper);
  margin-top:clamp(4rem,10vh,8rem);
  padding:clamp(5rem,11vh,9rem) 0 clamp(5rem,10vh,8rem);
  position:relative;
}
.camp::before{
  content:"";
  position:absolute;inset:0;
  pointer-events:none;
  opacity:.04;
  mix-blend-mode:soft-light;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E");
}
.camp > .wrap{position:relative}
.camp-head{max-width:640px;margin-bottom:clamp(2.8rem,6vh,4.5rem)}
.camp-head h2{
  margin:1rem 0 1.4rem;
  font-size:clamp(2rem,4.2vw,3.2rem);
  line-height:1.5;
}
.camp-head p:last-child{
  margin:0;
  font-size:15px;
  line-height:2.2;
  color:rgba(241,237,228,.62);
}
.camp .caption{color:rgba(241,237,228,.68)}
.camp .caption span{color:var(--gold-soft)}

.camp-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(1.4rem,3vw,2.6rem);
  align-items:start;
}

/* ---------- wild camp note ---------- */

.camp-note{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:1rem clamp(1.5rem,3vw,3rem);
  margin:0 0 clamp(3rem,7vh,5rem);
  padding-top:clamp(1.5rem,3vh,2.2rem);
  border-top:1px solid var(--line-light);
}
.camp-note-label{
  grid-column:1/4;
  margin:0;
  font-size:13px;
  line-height:2.1;
  letter-spacing:.06em;
  color:rgba(241,237,228,.5);
}
.camp-note-label span{
  display:block;
  margin-bottom:.5rem;
  font-size:11px;
  letter-spacing:.26em;
  color:var(--gold);
}
.camp-note-body{grid-column:4/11}
.camp-note-lead{
  margin:0 0 1.3rem;
  font-family:var(--serif);
  font-size:clamp(1.4rem,2.5vw,1.9rem);
  line-height:1.75;
  letter-spacing:.06em;
  color:var(--paper);
}
.camp-note-body p:not(.camp-note-lead){
  margin:0 0 1.1rem;
  font-size:14.5px;
  line-height:2.2;
  color:rgba(241,237,228,.66);
}
.camp-note-body p:last-child{margin-bottom:0}
.camp-grid figure{grid-column:span 6}
.camp-grid .camp-hero{grid-column:1/-1;margin-bottom:clamp(.5rem,2vw,1.5rem)}
.camp-grid .camp-hero img{aspect-ratio:16/9;object-fit:cover}
.camp-grid figure img{width:100%}
.camp-grid figure:not(.camp-hero) img{aspect-ratio:4/5;object-fit:cover}
.camp-grid .caption{font-size:13.5px;line-height:1.7;color:rgba(241,237,228,.68)}
.camp-grid .caption span{color:var(--gold-soft)}


/* ---------- coffee feature (inside camp) ---------- */

.coffee-feature{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(1.5rem,3vw,2.6rem);
  align-items:center;
  margin-top:clamp(3rem,7vh,5rem);
  padding-top:clamp(2.5rem,6vh,4.5rem);
  border-top:1px solid var(--line-light);
}
.coffee-media{grid-column:1/5;margin:0}
.coffee-media img{width:100%;aspect-ratio:4/5;object-fit:cover}
.coffee-copy{grid-column:5/10;padding-right:clamp(0rem,1.5vw,1.5rem)}
.coffee-copy h3{
  margin:.9rem 0 1.2rem;
  font-size:clamp(1.6rem,2.7vw,2.2rem);
  line-height:1.6;
}
.coffee-copy p:last-child{
  margin:0;
  font-size:14.5px;
  line-height:2.2;
  color:rgba(241,237,228,.66);
}
.coffee-video{grid-column:10/13;margin:0}
.coffee-video video{
  width:100%;
  aspect-ratio:9/16;
  object-fit:cover;
  background:#000;
}
.coffee-video .caption,
.coffee-media .caption{margin-top:1rem}
.coffee-feature .coffee-media img{max-height:70vh}

/* ---------- film ---------- */

.film{
  background:var(--night-3);
  color:var(--paper);
  padding:clamp(5rem,11vh,9rem) 0 clamp(4rem,9vh,7rem);
}
.film-head{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:1rem var(--pad);
  align-items:end;
  margin-bottom:clamp(2.5rem,5vh,4rem);
}
.film-head .eyebrow{grid-column:1/-1}
.film-head h2{
  grid-column:1/7;
  font-size:clamp(2.2rem,4.6vw,3.8rem);
  line-height:1.45;
}
.film-head p:last-child{
  grid-column:9/13;
  margin:0;
  text-align:right;
  font-size:14px;
  letter-spacing:.1em;
  color:rgba(241,237,228,.55);
}

.film-frame{
  position:relative;
  width:min(1560px,calc(100% - var(--pad)*2));
  margin:0 auto;
}
.film-frame video{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  background:#000;
}
.film-frame .caption{
  width:min(1180px,calc(100% - var(--pad)*2));
  margin-inline:auto;
}
.film-toggle{
  position:absolute;
  right:clamp(1rem,3vw,2rem);
  bottom:clamp(3.4rem,7vw,4.6rem);
  width:48px;height:48px;
  border-radius:50%;
  border:1px solid rgba(241,237,228,.35);
  background:rgba(10,10,8,.35);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  display:grid;
  place-items:center;
  /* 映像の読み込みが終わるまでは出さない（自動再生が前提なので） */
  opacity:0;
  pointer-events:none;
  transition:background .35s var(--ease),border-color .35s var(--ease),opacity .45s var(--ease);
}
.film-toggle.is-ready{opacity:1;pointer-events:auto}
.film-toggle:hover{background:rgba(10,10,8,.65);border-color:rgba(241,237,228,.7)}
.pause-icon{
  width:10px;height:12px;
  border-left:2px solid var(--paper);
  border-right:2px solid var(--paper);
}
.film-toggle.is-paused .pause-icon{
  width:0;height:0;
  border:0;
  border-left:11px solid var(--paper);
  border-top:7px solid transparent;
  border-bottom:7px solid transparent;
  margin-left:3px;
}

.dusk{padding:clamp(4rem,9vh,7rem) 0 clamp(4rem,9vh,7rem)}
.dusk-text{max-width:560px;margin-bottom:clamp(2.5rem,6vh,4rem)}
.dusk-text h3{
  margin:1rem 0 1.2rem;
  font-size:clamp(1.7rem,3.2vw,2.5rem);
}
.dusk-text p:last-child{
  margin:0;
  font-size:14.5px;
  line-height:2.2;
  color:rgba(241,237,228,.6);
}
.dusk-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(1.4rem,3vw,2.4rem);
  align-items:end;
}
.dusk-grid figure:nth-child(1){grid-column:1/6}
.dusk-grid figure:nth-child(2){grid-column:6/10}
.dusk-grid figure.portrait{grid-column:10/13}
.dusk-grid figure.portrait img{aspect-ratio:3/4;object-fit:cover}

/* ---------- day 2 ---------- */

.dawn-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(1.5rem,3vw,2.6rem);
  align-items:start;
  margin-top:clamp(3rem,7vh,5rem);
}
.dawn-text{grid-column:1/4;padding-top:1rem}
.dawn-text .lede{
  font-size:15px;
  line-height:2.2;
  color:rgba(241,237,228,.7);
}
.dawn-grid figure:nth-of-type(1){grid-column:4/9}
.dawn-grid figure:nth-of-type(2){grid-column:9/13;margin-top:clamp(2rem,6vw,5rem)}

.gold{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(1.5rem,3vw,2.6rem);
  align-items:center;
  margin:clamp(4rem,9vh,7rem) 0;
}
.gold figure{grid-column:1/8}
.gold .pull{grid-column:9/13;padding-left:clamp(0rem,2vw,1.5rem)}

.triptych{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(1.2rem,2.6vw,2.2rem);
  align-items:start;
  margin:clamp(3rem,7vh,5rem) 0;
}
.triptych figure:nth-child(2){margin-top:clamp(1.5rem,4vw,3.5rem)}

.vertical-feature{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(2rem,4vw,3rem);
  align-items:center;
  margin:clamp(4rem,9vh,7rem) 0;
}
.vertical-feature figure{grid-column:2/7}
.vertical-feature .vertical-text{grid-column:8/12}
.vertical-text p:last-child{
  margin:1.2rem 0 0;
  font-size:15px;
  line-height:2.2;
  color:rgba(241,237,228,.64);
}

.film-duo{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(1.4rem,3vw,2.4rem);
  align-items:start;
  margin:clamp(3rem,7vh,5rem) auto clamp(4rem,9vh,7rem);
}
.film-duo video{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  background:#000;
}
.film-duo figure:nth-child(2){margin-top:clamp(2rem,5vw,4rem)}

/* ---------- portrait films ---------- */

.film-portrait{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(2rem,4vw,3.5rem);
  align-items:center;
  margin:clamp(4rem,9vh,6.5rem) auto;
}
.film-portrait figure{
  grid-column:2/7;
  margin:0;
  max-width:440px;
  width:100%;
  justify-self:center;
}
.film-portrait .film-portrait-text{grid-column:8/12}
.film-portrait > figure,
.film-portrait > .film-portrait-text{grid-row:1}
.film-portrait video{
  width:100%;
  aspect-ratio:9/16;
  object-fit:cover;
  background:#000;
}
.film-portrait .film-portrait-text h3{
  margin:.9rem 0 1.2rem;
  font-size:clamp(1.7rem,3vw,2.4rem);
  line-height:1.5;
}
.film-portrait .film-portrait-text p:last-child{
  margin:0;
  font-size:14.5px;
  line-height:2.2;
  color:rgba(241,237,228,.66);
}
.film-portrait--trail figure{grid-column:7/12}
.film-portrait--trail .film-portrait-text{grid-column:2/6}

.film--ridge{padding-top:clamp(6rem,13vh,10rem)}
.film--ridge .film-frame video{aspect-ratio:2.35/1;object-position:50% 48%}



/* descent — light band inside the dark chapter */
.descent{
  background:var(--paper);
  color:var(--ink);
  box-shadow:0 0 0 100vmax var(--paper);
  clip-path:inset(0 -100vmax);
  padding:clamp(4.5rem,10vh,8rem) 0 clamp(3rem,7vh,5rem);
}
.descent .caption{color:var(--ink-soft)}
.descent .eyebrow{color:var(--gold-ink)}
.descent-head{max-width:560px;margin-bottom:clamp(2rem,5vh,3.5rem)}
.descent-head h3{
  margin-top:.9rem;
  font-size:clamp(1.8rem,3.4vw,2.6rem);
}
.descent .figure-wide .caption{
  width:min(1180px,calc(100% - var(--pad)*2));
}
.descent-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(1.4rem,3vw,2.4rem);
  margin-top:clamp(2.5rem,6vh,4rem);
}
.descent-grid figure:nth-child(2){margin-top:clamp(1.5rem,4vw,3rem)}

/* ---------- gallery ---------- */

.gallery{
  background:var(--paper);
  padding:clamp(5rem,11vh,9rem) 0 clamp(5rem,10vh,8rem);
}
.gallery-head{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:1rem var(--pad);
  align-items:end;
  margin-bottom:clamp(2.5rem,6vh,4.5rem);
}
.gallery-head .eyebrow{grid-column:1/-1}
.gallery-head h2{
  grid-column:1/8;
  margin-top:.9rem;
  font-size:clamp(2rem,4.4vw,3.4rem);
  line-height:1.55;
}
.gallery-note{
  grid-column:10/13;
  margin:0 0 .5rem;
  text-align:right;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--ink-soft);
}

.masonry{
  columns:3;
  column-gap:clamp(1rem,1.8vw,1.6rem);
}
.g-card{
  position:relative;
  display:block;
  width:100%;
  margin:0 0 clamp(1rem,1.8vw,1.6rem);
  break-inside:avoid;
  overflow:hidden;
  background:var(--paper-2);
  text-align:left;
  cursor:zoom-in;
}
.g-card img{
  width:100%;
  transform:scale(1.001);
  transition:transform 1.2s var(--ease),filter 1.2s var(--ease);
}
.g-card::after{
  content:"";
  position:absolute;
  inset:auto 0 0;
  height:52%;
  background:linear-gradient(180deg,rgba(0,0,0,0),rgba(0,0,0,.55));
  opacity:0;
  transition:opacity .6s var(--ease);
  pointer-events:none;
}
.g-cap{
  position:absolute;
  left:1.1rem;bottom:1rem;
  z-index:2;
  font-size:12.5px;
  letter-spacing:.14em;
  color:rgba(255,255,255,.92);
  opacity:0;
  transform:translateY(8px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
  pointer-events:none;
}
.g-play{
  position:absolute;
  z-index:2;
  top:1rem;right:1rem;
  width:34px;height:34px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.6);
  background:rgba(0,0,0,.28);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.g-play::after{
  content:"";
  position:absolute;
  top:50%;left:52%;
  transform:translate(-50%,-50%);
  border-left:8px solid #fff;
  border-top:5px solid transparent;
  border-bottom:5px solid transparent;
}

.g-card video{width:100%;display:block}
.g-card--video{border:1px solid rgba(189,154,104,.42)}
.g-card--video .g-play{
  border-color:rgba(255,255,255,.75);
  background:rgba(0,0,0,.4);
}

@media (hover:hover){
  .g-card:hover img{transform:scale(1.045)}
  .g-card:hover::after{opacity:1}
  .g-card:hover .g-cap{opacity:1;transform:none}
}
@media (hover:none){
  .g-card::after{opacity:1;height:40%}
  .g-cap{opacity:1;transform:none}
}

/* ---------- closing ---------- */

.closing{
  position:relative;
  min-height:min(86svh,820px);
  display:flex;
  align-items:flex-end;
  overflow:hidden;
  background:var(--night);
  color:var(--paper);
  isolation:isolate;
}
.closing-bg{
  position:absolute;inset:0;z-index:-2;
  width:100%;height:100%;
  object-fit:cover;
  object-position:50% 55%;
}
.closing-veil{
  position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(8,9,7,.4),rgba(8,9,7,.1) 40%,rgba(8,9,7,.85));
}
.closing-inner{padding-bottom:clamp(4rem,9vh,7rem);max-width:760px}
.closing-inner h2{
  margin:1.2rem 0 1.5rem;
  font-size:clamp(2.4rem,5.6vw,4.2rem);
  line-height:1.4;
}
.closing-inner p:last-child{
  margin:0;
  font-size:14.5px;
  line-height:2.2;
  letter-spacing:.08em;
  color:rgba(241,237,228,.7);
}

/* ---------- footer ---------- */

.site-foot{
  background:var(--night-3);
  color:var(--paper);
  padding:clamp(3rem,6vh,4.5rem) 0 clamp(2.2rem,5vh,3.2rem);
  border-top:1px solid rgba(241,237,228,.08);
}
.foot-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:2rem var(--pad);
  align-items:start;
}
.foot-grid > div:first-child{grid-column:1/5}
.foot-title{
  font-family:var(--serif);
  font-size:1.15rem;
  letter-spacing:.2em;
  margin:0 0 .5rem;
}
.foot-title a{
  color:inherit;
  text-decoration:none;
  border-bottom:1px solid rgba(241,237,228,.22);
  padding-bottom:.15em;
  transition:border-color .4s var(--ease),color .4s var(--ease);
}
@media (hover:hover){.foot-title a:hover{color:var(--gold-soft);border-color:var(--gold-soft)}}
.foot-sub{
  margin:0;
  font-size:12.5px;
  letter-spacing:.12em;
  color:rgba(241,237,228,.45);
}
.foot-meta{
  grid-column:5/10;
  margin:0;
  display:grid;
  gap:.8rem;
}
.foot-meta div{display:flex;gap:1.2rem;align-items:baseline}
.foot-meta dt{
  flex:none;
  width:3.2rem;
  font-size:11px;
  letter-spacing:.24em;
  color:var(--gold);
}
.foot-meta dd{
  margin:0;
  font-size:12.5px;
  letter-spacing:.08em;
  color:rgba(241,237,228,.65);
}
.credit{
  grid-column:10/13;
  margin:0;
  text-align:right;
  font-size:12px;
  line-height:2;
  letter-spacing:.14em;
  color:rgba(241,237,228,.55);}
.credit span{color:rgba(241,237,228,.32)}
/* 上のサイト（coa-research.com）への戻り道。控えめだが、押せると分かる下線。 */
.credit a{
  color:rgba(241,237,228,.78);
  text-decoration:none;
  border-bottom:1px solid rgba(241,237,228,.26);
  padding-bottom:1px;
  transition:color .35s var(--ease),border-color .35s var(--ease);
}
.credit a:hover,.credit a:focus-visible{color:var(--gold);border-bottom-color:var(--gold)}

.foot-back{
  grid-column:1/-1;
  display:inline-flex;
  align-items:center;
  gap:.8rem;
  width:fit-content;
  margin-top:1rem;
  padding:.72rem 1.4rem;
  border:1px solid rgba(241,237,228,.22);
  border-radius:999px;
  font-size:12px;
  letter-spacing:.16em;
  color:rgba(241,237,228,.82);
  transition:border-color .4s var(--ease),background .4s var(--ease),color .4s var(--ease),gap .4s var(--ease);
}
.foot-back em{font-style:normal;letter-spacing:0}
.foot-back:hover{
  gap:1.15rem;
  border-color:var(--gold);
  background:rgba(241,237,228,.06);
  color:var(--paper);
}

/* ---------- lightbox ---------- */

.lightbox{
  position:fixed;
  inset:0;
  z-index:200;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:clamp(1rem,4vw,3rem);
  background:rgba(7,8,6,.96);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  color:var(--paper);
  opacity:0;
  transition:opacity .4s var(--ease);
}
.lightbox[hidden]{display:none}
.lightbox.is-open{opacity:1}
.lb-stage{
  display:flex;
  align-items:center;
  justify-content:center;
  width:100%;
  height:100%;
}
.lb-stage img,
.lb-stage video{
  max-width:min(1500px,92vw);
  max-height:78vh;
  width:auto;
  height:auto;
  object-fit:contain;
  box-shadow:0 30px 80px rgba(0,0,0,.5);
}
.lb-stage video{width:min(1500px,92vw)}
.lb-cap{
  position:absolute;
  left:50%;
  bottom:clamp(1.4rem,4vh,2.6rem);
  transform:translateX(-50%);
  margin:0;
  width:min(760px,86vw);
  text-align:center;
  font-size:13px;
  letter-spacing:.1em;
  color:rgba(241,237,228,.72);
}
.lb-count{
  position:absolute;
  left:clamp(1.2rem,3vw,2.4rem);
  top:calc(clamp(1.2rem,3vw,2.4rem) + 4px);
  margin:0;
  font-size:11.5px;
  letter-spacing:.24em;
  color:rgba(241,237,228,.45);
  font-variant-numeric:tabular-nums;
}
.lb-close,
.lb-prev,
.lb-next{
  position:absolute;
  z-index:2;
  width:52px;height:52px;
  display:grid;
  place-items:center;
  border:1px solid rgba(241,237,228,.22);
  border-radius:50%;
  background:rgba(12,12,10,.4);
  transition:background .3s var(--ease),border-color .3s var(--ease),opacity .3s var(--ease);
}
.lb-close:hover,.lb-prev:hover,.lb-next:hover{
  background:rgba(241,237,228,.1);
  border-color:rgba(241,237,228,.5);
}
.lb-close{top:clamp(1.2rem,3vw,2.4rem);right:clamp(1.2rem,3vw,2.4rem)}
.lb-close::before,.lb-close::after{
  content:"";
  position:absolute;
  width:17px;height:1px;
  background:var(--paper);
}
.lb-close::before{transform:rotate(45deg)}
.lb-close::after{transform:rotate(-45deg)}
.lb-prev{left:clamp(.7rem,2.4vw,2rem);top:50%;transform:translateY(-50%)}
.lb-next{right:clamp(.7rem,2.4vw,2rem);top:50%;transform:translateY(-50%)}
.lb-prev::before,.lb-next::before{
  content:"";
  width:11px;height:11px;
  border-left:1px solid var(--paper);
  border-bottom:1px solid var(--paper);
}
.lb-prev::before{transform:rotate(45deg) translate(2px,-2px)}
.lb-next::before{transform:rotate(-135deg) translate(2px,-2px)}

/* ---------- reveal ---------- */

[data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
[data-reveal].in{opacity:1;transform:none}

/* ---------- responsive ---------- */

@media (max-width:980px){
  .intro-grid{grid-template-columns:repeat(6,1fr)}
  .intro-title{grid-column:1/7}
  .intro-body{grid-column:1/6;margin-top:1.5rem}
  .intro-meta{grid-column:1/7}
  .chapter-head{grid-template-columns:repeat(6,1fr)}
  .chapter-no{grid-column:1/2}
  .chapter-title{grid-column:2/7}
  .chapter-lead{grid-column:1/7;text-align:left;margin-top:1rem}
  .split{grid-template-columns:1fr;align-items:start;gap:1.6rem}
  .split-text,.split-media{grid-column:1/-1}
  .split-media{margin-top:.4rem}
  .camp-grid figure{grid-column:span 6}
  .dawn-grid{grid-template-columns:1fr}
  .dawn-text{grid-column:1/-1}
  .dawn-grid figure:nth-of-type(1),
  .dawn-grid figure:nth-of-type(2){grid-column:1/-1;margin-top:0}
  .gold{grid-template-columns:1fr}
  .gold figure,.gold .pull{grid-column:1/-1}
  .gold .pull{padding:2rem 0 0;text-align:center}
  .vertical-feature figure{grid-column:1/8}
  .vertical-feature .vertical-text{grid-column:8/13}
  .masonry{columns:2}
  .foot-grid{grid-template-columns:1fr}
  .foot-grid > div:first-child{grid-column:1/-1}
  .foot-meta{grid-column:1/-1}
  .credit{grid-column:1/-1;text-align:left;margin-top:0}
  .film-head{grid-template-columns:repeat(6,1fr)}
  .film-head h2{grid-column:1/7}
  .film-head p:last-child{grid-column:1/7;text-align:left;margin-top:1rem}
  .gallery-head{grid-template-columns:repeat(6,1fr)}
  .gallery-head h2{grid-column:1/7}
  .gallery-note{grid-column:1/7;text-align:left;margin-top:1rem}
  .coffee-feature{grid-template-columns:repeat(6,1fr)}
  .coffee-media{grid-column:1/4}
  .coffee-copy{grid-column:4/7;padding-right:0}
  .coffee-video{grid-column:4/7;max-width:72%;margin-top:1.5rem}
  .film-portrait{grid-template-columns:repeat(6,1fr)}
  .film-portrait figure{grid-column:1/4}
  .film-portrait .film-portrait-text{grid-column:4/7}
  .film-portrait--trail figure{grid-column:4/7}
  .film-portrait--trail .film-portrait-text{grid-column:1/4}
  .camp-note{grid-template-columns:repeat(6,1fr)}
  .camp-note-label{grid-column:1/7}
  .camp-note-body{grid-column:1/7;margin-top:.6rem}
}

@media (max-width:760px){
  :root{--head-h:62px}
  body{font-size:15.5px}
  .hero{min-height:100svh;align-items:flex-end}
  .hero-title{font-size:clamp(3rem,15vw,4.6rem);letter-spacing:.03em}
  .hero-sub{font-size:.98rem;line-height:2.1}
  .hero-meta{flex-wrap:wrap;gap:.55rem 1rem;font-size:11px}
  .hero-meta .dot{display:none}
  .scroll-cue{display:none}
  .site-nav{display:none}
  /* 画面下の固定メニューに、フッターの最後の行が隠れないように */
  .site-foot{padding-bottom:calc(2.2rem + 66px + env(safe-area-inset-bottom))}
  .menu-btn{margin-left:auto;padding:.55rem .85rem .5rem;letter-spacing:.2em}
  .site-menu-cols{grid-template-columns:1fr;gap:1.5rem 1.6rem}
  .sm-title{font-size:15px}
  .chapter-head{grid-template-columns:1fr;gap:.7rem}
  .chapter-no{grid-column:1/-1;font-size:2.2rem}
  .chapter-title{grid-column:1/-1}
  .chapter-lead{grid-column:1/-1;text-align:left;margin-top:.9rem}
  .duo{grid-template-columns:1fr;gap:2rem}
  .duo .pull{padding:0;text-align:center}
  .camp-grid figure{grid-column:span 6 !important}
  .camp-grid .caption{font-size:13px}
  .dusk-grid figure{grid-column:1/-1 !important}
  .dusk-grid figure.portrait img{aspect-ratio:3/4;max-width:70%}
  .triptych{grid-template-columns:1fr;gap:2rem}
  .triptych figure:nth-child(2){margin-top:0}
  .vertical-feature{grid-template-columns:1fr}
  .vertical-feature figure,.vertical-feature .vertical-text{grid-column:1/-1}
  .vertical-feature figure{max-width:78%}
  .film-duo{grid-template-columns:1fr}
  .film-duo figure:nth-child(2){margin-top:0}
  .coffee-feature{grid-template-columns:1fr;gap:2rem}
  .coffee-media,.coffee-copy,.coffee-video{grid-column:1/-1}
  .coffee-media{max-width:88%}
  .coffee-video{max-width:70%;justify-self:center}
  .film-portrait{grid-template-columns:1fr;gap:1.6rem;justify-items:center;text-align:center}
  .film-portrait figure,.film-portrait .film-portrait-text,
  .film-portrait--trail figure,.film-portrait--trail .film-portrait-text{grid-column:1/-1;grid-row:auto}
  .film-portrait figure{max-width:82%}
  .film-portrait .film-portrait-text{order:-1}
  .film-portrait--trail figure{order:-1}
  .film-portrait--trail .film-portrait-text{order:2}
  .film--ridge .film-frame video{aspect-ratio:16/9}
  .descent-grid{grid-template-columns:1fr}
  .descent-grid figure:nth-child(2){margin-top:0}
  .film-frame{width:100%}
  .film-toggle{right:1rem;bottom:calc(1rem + 2.6rem)}
  .masonry{columns:2;column-gap:.8rem}
  .g-card{margin-bottom:.8rem}
  .lb-prev,.lb-next{width:44px;height:44px}
  .lb-stage img,.lb-stage video{max-height:70vh}
  .lb-cap{bottom:1rem}
}

@media (max-width:520px){
  .site-menu-cols{grid-template-columns:1fr}
  .masonry{columns:1}
  .g-card img{width:100%}
  .camp-grid{grid-template-columns:1fr}
  .camp-grid figure{grid-column:1/-1 !important}
  .camp-grid .camp-hero{grid-column:1/-1 !important}
  .foot-meta div{flex-direction:column;gap:.1rem}
  .foot-meta dt{width:auto}
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .hero-media img{transform:none}
  .scroll-line{display:none}
  .film-toggle{display:none}
}

/* ---------- 総合リンク（coa-research.com のほかのサイト） ---------- */
/* 山の記録は、coa-research.com のなかの1つ。どのページからでも
   総合サイトと兄弟サイトへ戻れるようにする。 */
.foot-sites{
  grid-column:1/-1;
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:.5rem 1.8rem;
  margin-top:1.6rem;
  padding-top:1.5rem;
  border-top:1px solid rgba(241,237,228,.12);
}
.foot-sites-label{
  margin:0;
  font-size:10.5px;
  letter-spacing:.22em;
  color:var(--gold);
}
.foot-sites-list{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem 1.6rem;
  margin:0;
  padding:0;
  list-style:none;
}
.foot-sites-list a{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:.1em;
  color:rgba(241,237,228,.74);
  text-decoration:none;
  border-bottom:1px solid rgba(241,237,228,.22);
  padding-bottom:1px;
  transition:color .35s var(--ease),border-color .35s var(--ease);
}
.foot-sites-list a:hover,
.foot-sites-list a:focus-visible{color:var(--gold);border-bottom-color:var(--gold)}
.foot-sites-list a[aria-current="page"]{
  color:rgba(241,237,228,.42);
  border-bottom-color:transparent;
}
.site-menu-coa{
  width:min(1180px,100%);
  margin:.8rem auto 0;
  font-size:12px;
  letter-spacing:.14em;
}
.site-menu-coa a{
  color:var(--gold-ink);
  text-decoration:none;
  border-bottom:1px solid rgba(134,101,60,.4);
  padding-bottom:2px;
}
.site-menu-coa a:hover,
.site-menu-coa a:focus-visible{border-bottom-color:var(--gold-ink)}