/* ============================================================
   合同会社ステラ
   軸: 定款2 インターネットを利用した各種情報提供サービス
   構成: hero=白い余白の中に写真を1枚だけ置く / 図版=縦書きの短い見出しを写真に添える /
        事業=写真を上に敷いて、その下に説明 / 手順なし・対応範囲なし・質問なし
   動き: 登場=下から静かにせり上がる／字間が詰まる ・ スクロール=写真がゆっくり動く
        ・ ホバー=細い罫が中央から広がる
   文章: 社名の比喩に寄せない。体言止めを使わない。（design-brief.md）
   ============================================================ */
:root{
  --bg:#fcfcfb;
  --bg-2:#f2f0ec;
  --ink:#1e1d22;
  --ink-2:#55535e;
  --ink-3:#8d8b95;
  --murasaki:#3f3557;
  --kin:#9a8355;
  --hair:rgba(30,29,34,.13);
  --wrap:1080px;
  --pad:clamp(1.3rem,5vw,5rem);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Noto Sans JP",system-ui,-apple-system,Meiryo,sans-serif;background:var(--bg);color:var(--ink);
  font-weight:400;line-height:2.15;font-size:15.5px;letter-spacing:.05em;overflow-x:hidden;-webkit-font-smoothing:antialiased;
  line-break:strict;word-break:auto-phrase}
p,li,dd,td,.a,.sub,.lead{text-wrap:pretty}
h1,h2,h3,h4{text-wrap:balance;line-break:strict;word-break:auto-phrase}
.nb{white-space:nowrap}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--murasaki);color:#fff}
.mincho{font-family:"Zen Old Mincho","Hiragino Mincho ProN",serif}
.lat{font-family:"Cormorant Garamond",serif;font-weight:500;font-style:italic;letter-spacing:.16em;font-size:.86rem;color:var(--kin)}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.progress{position:fixed;top:0;left:0;height:1px;width:0;background:var(--murasaki);z-index:90;transition:width .1s linear}

/* header：うすい紙の上に浮かべる。線はほとんど引かない */
.site-header{position:fixed;inset:0 0 auto 0;z-index:80;display:flex;align-items:center;justify-content:space-between;
  padding:26px var(--pad);transition:background .5s,padding .5s;color:var(--ink)}
.site-header.solid{background:rgba(252,252,251,.92);backdrop-filter:blur(8px);padding-top:15px;padding-bottom:15px;box-shadow:0 1px 0 var(--hair)}
.brand{display:flex;align-items:center;gap:13px}
.brand .mono{width:34px;height:34px;border:1px solid var(--hair);border-radius:50%;display:grid;place-items:center;
  font-family:"Zen Old Mincho",serif;font-size:.88rem;flex:none;color:var(--murasaki)}
.brand .bt b{display:block;font-family:"Zen Old Mincho",serif;font-weight:500;font-size:.94rem;letter-spacing:.18em}
.brand .bt span{font-family:"Cormorant Garamond",serif;font-size:.6rem;letter-spacing:.26em;color:var(--ink-3)}
.nav{display:flex;align-items:center;gap:26px}
.nav a{position:relative;font-size:.78rem;letter-spacing:.13em;color:var(--ink-2)}
.nav a:not(.nav-cta)::after{content:"";position:absolute;left:50%;right:50%;bottom:-5px;height:1px;background:var(--kin);transition:left .35s,right .35s}
.nav a:not(.nav-cta):hover::after,.nav a[aria-current=page]:not(.nav-cta)::after{left:0;right:0}
.nav .nav-cta{border:1px solid var(--murasaki);color:var(--murasaki);border-radius:999px;padding:8px 19px;font-size:.73rem;transition:background .35s,color .35s}
.nav .nav-cta:hover{background:var(--murasaki);color:#fff}
.nav-toggle{display:none}

/* hero：白の中に写真を一枚だけ。額のように余白をとる */
.hero{padding:clamp(8rem,15vw,10.5rem) 0 clamp(4rem,9vw,7rem);position:relative}
.hero-media{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:clamp(1.2rem,3.5vw,2.6rem);align-items:stretch;
  margin-top:clamp(2.6rem,6vw,4.2rem)}
.hero-card{position:relative;overflow:hidden;background:var(--bg-2)}
.hero-card img{width:100%;aspect-ratio:21/9;object-fit:cover;filter:saturate(.82) contrast(.96);
  transform:scale(1.12);opacity:0;transition:transform 2.1s cubic-bezier(.16,1,.3,1),opacity 1.5s}
.hero.lit .hero-card img{transform:scale(1);opacity:1}
.hero-card::after{content:"";position:absolute;inset:0;background:var(--bg);transform-origin:top;transition:transform 1.35s cubic-bezier(.76,0,.24,1) .12s}
.hero.lit .hero-card::after{transform:scaleY(0)}
.hero-side{writing-mode:vertical-rl;align-self:end;font-family:"Zen Old Mincho",serif;font-size:.72rem;letter-spacing:.4em;color:var(--ink-3);
  height:100%;opacity:0;transition:opacity 1s 1.1s}
.hero.lit .hero-side{opacity:1}
.hero .lat{display:block;margin-bottom:1.2rem;opacity:0;transition:opacity .9s 1s}
.hero.lit .lat{opacity:1}
.hero h1{font-family:"Zen Old Mincho",serif;font-weight:500;font-size:clamp(1.75rem,4.6vw,3.2rem);line-height:1.85;letter-spacing:.3em;
  opacity:0;transition:opacity 1.3s 1.1s,letter-spacing 1.5s cubic-bezier(.16,1,.3,1) 1.1s}
.hero.lit h1{opacity:1;letter-spacing:.12em}
.hero .sub{margin-top:1.8rem;max-width:31rem;color:var(--ink-2);font-size:.94rem;opacity:0;transition:opacity 1.1s 1.45s}
.hero.lit .sub{opacity:1}
.hero-actions{margin-top:2.4rem;display:flex;gap:14px;flex-wrap:wrap;opacity:0;transition:opacity 1.1s 1.65s}
.hero.lit .hero-actions{opacity:1}

/* ボタン：細い罫が中央から左右へ伸びる */
.btn{position:relative;display:inline-flex;align-items:center;gap:.8em;font-size:.79rem;letter-spacing:.16em;
  padding:14px 4px 15px;color:var(--ink)}
.btn::before{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--hair)}
.btn::after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:1px;background:var(--murasaki);transition:left .45s cubic-bezier(.2,.7,.2,1),right .45s cubic-bezier(.2,.7,.2,1)}
.btn:hover::after{left:0;right:0}
.btn .ar{font-family:"Cormorant Garamond",serif;transition:transform .4s}
.btn:hover .ar{transform:translateX(6px)}
.btn .t2{display:none}
.btn-fill{background:var(--murasaki);color:#fff;padding:15px 30px}
.btn-fill::before,.btn-fill::after{display:none}
.btn-fill{transition:background .35s}
.btn-fill:hover{background:#2c2440}

/* section */
.section{padding:clamp(4.6rem,12vw,9rem) 0;position:relative}
.section.tone{background:var(--bg-2)}
.sec-head{margin-bottom:clamp(2.4rem,5.5vw,4rem);max-width:42rem}
.sec-head .lat{display:block;margin-bottom:.7rem}
.sec-head h2{font-family:"Zen Old Mincho",serif;font-weight:500;font-size:clamp(1.4rem,3.4vw,2.15rem);line-height:1.8;letter-spacing:.16em}
.sec-head p{margin-top:1.2rem;color:var(--ink-2)}

/* 由来：写真に縦書きの短い見出しを添える */
.vcap{display:grid;grid-template-columns:auto minmax(0,1fr);gap:clamp(1.4rem,4vw,3rem);align-items:start}
.vcap .cap{writing-mode:vertical-rl;font-family:"Zen Old Mincho",serif;font-size:clamp(1.05rem,2.4vw,1.5rem);
  letter-spacing:.42em;line-height:2.3;color:var(--murasaki);padding-top:.4rem;
  max-height:24rem;clip-path:inset(0 0 100% 0);transition:clip-path 1.4s cubic-bezier(.2,.7,.2,1)}
.reveal.on .vcap .cap,.vcap.reveal.on .cap{clip-path:inset(0)}
.vcap figure{overflow:hidden}
.vcap figure img{width:100%;aspect-ratio:4/3;object-fit:cover;filter:saturate(.82)}
.vcap figcaption{margin-top:.8rem;font-size:.74rem;color:var(--ink-3);letter-spacing:.12em}
.vcap .body{margin-top:1.8rem}
.vcap .body p{color:var(--ink-2);margin-top:1rem}
.vcap .body p:first-child{margin-top:0}

/* 業務内容：写真を上に敷いて、その下に説明 */
.leadfig{overflow:hidden;margin-bottom:clamp(2rem,5vw,3.4rem)}
.leadfig img{width:100%;aspect-ratio:21/8;object-fit:cover;filter:saturate(.8);
  transform:scale(1.08);transition:transform 1.8s cubic-bezier(.16,1,.3,1)}
.reveal.on .leadfig img,.leadfig.reveal.on img{transform:scale(1)}
.items{border-top:1px solid var(--hair)}
.items .it{padding:clamp(1.6rem,3.6vw,2.5rem) 0;border-bottom:1px solid var(--hair);
  display:grid;grid-template-columns:auto minmax(0,1fr);gap:clamp(1.2rem,3.5vw,3rem)}
.items .it .no{font-family:"Cormorant Garamond",serif;font-size:1.5rem;color:var(--kin);line-height:1.2;min-width:2.4rem}
.items .it h3{font-family:"Zen Old Mincho",serif;font-weight:500;font-size:1.05rem;letter-spacing:.1em;line-height:1.8;margin-bottom:.8rem}
.items .it .mark{display:inline-block;margin-left:.8em;font-family:"Noto Sans JP",sans-serif;font-size:.6rem;letter-spacing:.16em;
  color:#fff;background:var(--murasaki);padding:3px 9px;vertical-align:middle;line-height:1.7}
.items .it p{color:var(--ink-2);font-size:.93rem}
.items .it p+p{margin-top:.8rem}
.note-line{margin-top:1.9rem;font-size:.79rem;color:var(--ink-3);max-width:42rem;line-height:2}

/* 会社について */
.table-info{width:100%;border-collapse:collapse;font-size:.93rem}
.table-info th,.table-info td{border-top:1px solid var(--hair);padding:1.25rem .2rem;text-align:left;vertical-align:top}
.table-info th{width:11rem;font-weight:500;color:var(--ink-3);font-size:.8rem;letter-spacing:.14em;font-family:"Zen Old Mincho",serif}
.table-info tr:last-child td,.table-info tr:last-child th{border-bottom:1px solid var(--hair)}

.cta{text-align:center;padding:clamp(4.5rem,11vw,8rem) var(--pad);border-top:1px solid var(--hair)}
.cta .lat{display:block}
.cta h2{font-family:"Zen Old Mincho",serif;font-weight:500;font-size:clamp(1.35rem,3.4vw,2.1rem);margin:1.1rem 0 1rem;letter-spacing:.18em;line-height:1.85}
.cta p{color:var(--ink-2);margin-bottom:2.4rem}

.page-hero{padding:clamp(8rem,15vw,11.5rem) var(--pad) clamp(2.4rem,5.5vw,4rem);border-bottom:1px solid var(--hair)}
.page-hero .lat{display:block;margin-bottom:.7rem}
.page-hero h1{font-family:"Zen Old Mincho",serif;font-weight:500;font-size:clamp(1.6rem,4.2vw,2.6rem);letter-spacing:.24em}

.prose{max-width:42rem}
.prose h2{font-family:"Zen Old Mincho",serif;font-weight:500;font-size:1.06rem;letter-spacing:.12em;margin:2.6rem 0 .9rem;padding-bottom:.55rem;border-bottom:1px solid var(--hair)}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--ink-2);font-size:.93rem}
.prose ul,.prose ol{margin:.5rem 0 .5rem 1.4rem}.prose li{margin:.3rem 0}
.prose .stamp{font-size:.78rem;color:var(--ink-3);margin-top:2.3rem}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5.5vw,4.5rem);max-width:58rem;align-items:start}
.contact-grid h3{font-family:"Zen Old Mincho",serif;font-weight:500;font-size:1rem;letter-spacing:.16em;color:var(--murasaki);
  padding-bottom:.55rem;border-bottom:1px solid var(--hair);margin-bottom:1rem}
.contact-grid p{line-height:2.05}
.mail{font-family:"Cormorant Garamond",serif;font-size:clamp(1.2rem,3vw,1.55rem);letter-spacing:.05em;color:var(--murasaki);margin-top:.3rem}
.tiny{font-size:.78rem;color:var(--ink-3);line-height:1.95;margin-top:.5rem}
.form{display:grid;gap:1.2rem;margin-top:1.3rem}
.form label{font-size:.75rem;letter-spacing:.13em;color:var(--ink-3);display:block}
.form input,.form textarea{width:100%;border:0;border-bottom:1px solid var(--hair);padding:.7rem .1rem;font-family:inherit;font-size:.95rem;
  line-height:1.8;background:transparent;margin-top:.4rem}
.form input:focus,.form textarea:focus{outline:0;border-bottom-color:var(--murasaki)}
.form input:disabled,.form textarea:disabled{color:var(--ink-3);cursor:not-allowed}
.form .btn{justify-self:start;margin-top:.6rem}
.form .btn:disabled{opacity:.4;pointer-events:none}

.site-footer{background:var(--bg-2);color:var(--ink-2);padding:clamp(3.4rem,8vw,5.4rem) var(--pad) 2rem;border-top:1px solid var(--hair)}
.footer-top{max-width:var(--wrap);margin:0 auto;display:flex;justify-content:space-between;gap:2.8rem;flex-wrap:wrap}
.footer-brand .mono{width:40px;height:40px;border:1px solid var(--hair);border-radius:50%;display:grid;place-items:center;
  font-family:"Zen Old Mincho",serif;color:var(--murasaki)}
.footer-brand b{display:block;margin-top:1rem;color:var(--ink);font-family:"Zen Old Mincho",serif;font-weight:500;letter-spacing:.2em;font-size:.96rem}
.footer-addr{font-size:.8rem;margin-top:.8rem;line-height:2}
.footer-nav{display:grid;grid-template-columns:1fr 1fr;gap:.55rem 2.4rem;font-size:.8rem}
.footer-nav a:hover{color:var(--murasaki)}
.footer-bottom{max-width:var(--wrap);margin:2.6rem auto 0;padding-top:1.4rem;border-top:1px solid var(--hair);
  font-family:"Cormorant Garamond",serif;font-size:.74rem;letter-spacing:.22em;color:var(--ink-3)}

.reveal{opacity:0;transform:translateY(26px);transition:opacity 1.2s cubic-bezier(.2,.7,.2,1),transform 1.2s cubic-bezier(.2,.7,.2,1)}
.reveal.on{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.14s}

@media(max-width:960px){
  .hero-media{grid-template-columns:1fr}
  .hero-side{display:none}
  .vcap{grid-template-columns:1fr}
  .vcap .cap{writing-mode:horizontal-tb;letter-spacing:.16em;max-height:none;line-height:1.9;font-size:1.15rem}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:680px){
  .nav a:not(.nav-cta){display:none}
  .nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:6px;width:36px;height:30px;background:none;border:0;cursor:pointer}
  .nav-toggle span{display:block;width:22px;height:1px;margin-left:auto;background:currentColor;transition:transform .25s,opacity .2s}
  .nav-toggle.on span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.on span:nth-child(2){opacity:0}
  .nav-toggle.on span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav.menu-open{position:fixed;inset:0;background:var(--bg);flex-direction:column;justify-content:center;align-items:center;gap:1.8rem}
  .nav.menu-open a:not(.nav-cta){display:block;font-size:1.05rem;letter-spacing:.24em}
  .items .it{grid-template-columns:1fr;gap:.4rem}
  .footer-top{flex-direction:column;gap:1.7rem}.footer-nav{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  .reveal,.hero h1,.hero .sub,.hero-actions,.hero .lat,.hero-card img,.hero-card::after,.vcap .cap,.leadfig img{
    transition:none;opacity:1;transform:none;clip-path:none;letter-spacing:.12em}
}

/* 業務内容：主たる仕事ひとつだけを本文で語る */
.single{max-width:42rem}
.single h3{font-family:"Zen Old Mincho",serif;font-weight:500;font-size:clamp(1.25rem,3vw,1.75rem);letter-spacing:.14em;line-height:1.8;
  margin-bottom:1.3rem;padding-bottom:.9rem;border-bottom:1px solid var(--hair)}
.single p{color:var(--ink-2);margin-top:1rem}
.single .aside{margin-top:2.2rem;padding-top:1.2rem;border-top:1px solid var(--hair);font-size:.86rem;color:var(--ink-3)}
.single .aside a,.note-line a{color:var(--murasaki);text-decoration:underline;text-underline-offset:3px}

/* ---- ロゴ（支給マークの円と星の部分） ----
   地がいつも明るいので、丸い枠を外して素のまま置く */
.brand img.mono,.footer-brand img.mono{border:0;background:none;padding:0;object-fit:contain;display:block;flex:none}
.brand img.mono{width:34px;height:34px}
.footer-brand img.mono{width:40px;height:40px}