:root{
  --paper:#F7F5EE;
  --surface:#FFFFFF;
  --ink:#1E231C;
  --muted:#626B5C;
  --line:#DEDBCC;
  --ai:#2E5B3C;
  --ai-soft:#E8F0E7;
  --on-ai:#FFFFFF;
  --hinoki:#AF7C3F;
  --grid:rgba(46,91,60,.10);

  --f-disp:"Zen Maru Gothic","Hiragino Maru Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",sans-serif;
  --f-body:"Noto Sans JP","Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic","YuGothic","Meiryo",-apple-system,BlinkMacSystemFont,sans-serif;

  --wrap:min(1080px,100% - 2.5rem);
  --read:min(46rem,100%);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#131710;
    --surface:#1B2018;
    --ink:#E9E8DE;
    --muted:#9EA795;
    --line:#2E342A;
    --ai:#8FC49B;
    --ai-soft:#1E2A1F;
    --on-ai:#0F150F;
    --hinoki:#D2A96E;
    --grid:rgba(143,196,155,.10);
  }
}
:root[data-theme="dark"]{
  --paper:#131710;
  --surface:#1B2018;
  --ink:#E9E8DE;
  --muted:#9EA795;
  --line:#2E342A;
  --ai:#8FC49B;
  --ai-soft:#1E2A1F;
  --on-ai:#0F150F;
  --hinoki:#D2A96E;
  --grid:rgba(143,196,155,.10);
}

*{box-sizing:border-box}
body{
  margin:0;
  font-feature-settings:"palt";
  background:var(--paper);
  color:var(--ink);
  font-family:var(--f-body);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
a{color:inherit}
h1,h2,h3{font-family:var(--f-disp);font-weight:700;text-wrap:balance;line-height:1.4;margin:0}

.wrap{width:var(--wrap);margin-inline:auto}
section{padding-block:clamp(3.5rem,8vw,6rem);border-top:1px solid var(--line)}
.stack{display:flex;flex-direction:column}

/* 曲尺（かねじゃく）の角をモチーフにした見出しマーク */
.eyebrow{
  display:inline-flex;align-items:center;gap:.75em;
  font-size:.78rem;font-weight:700;letter-spacing:.2em;
  color:var(--hinoki);margin:0 0 1.1rem;
}
.eyebrow::before{
  content:"";width:.7em;height:.7em;
  border-top:2px solid currentColor;border-left:2px solid currentColor;
  transform:translateY(-.12em);
}

/* ---- ヘッダー ---- */
.site-head{
  display:flex;align-items:center;justify-content:space-between;
  gap:1rem;padding-block:1.1rem;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:.65rem;font-family:var(--f-disp);font-size:1.4rem;font-weight:700;letter-spacing:.12em}
.brand .mark{width:2.35rem;height:2.35rem;flex:none;color:var(--ai)}
.brand small{display:block;font-family:var(--f-body);font-size:.7rem;font-weight:500;letter-spacing:.16em;color:var(--muted);margin-top:.15rem}
.head-tel{text-align:right;line-height:1.5}
.head-tel .num{font-size:1.35rem;font-weight:700;letter-spacing:.02em;font-variant-numeric:tabular-nums;text-decoration:none}
.head-tel .note{display:block;font-size:.72rem;color:var(--muted)}


/* ---- 目次ナビ ---- */
html{scroll-behavior:smooth}
section{scroll-margin-top:1rem}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.site-nav{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.site-nav ul{
  display:flex;gap:0;margin:0;padding:0;list-style:none;
  width:var(--wrap);margin-inline:auto;min-width:max-content;
}
.site-nav a{
  display:block;padding:.85rem 1.1rem;
  font-size:.86rem;font-weight:700;text-decoration:none;color:var(--ink);
  white-space:nowrap;border-bottom:3px solid transparent;
}
.site-nav a:hover{color:var(--ai);border-bottom-color:var(--hinoki)}
.site-nav a:focus-visible{outline:3px solid var(--hinoki);outline-offset:-3px}
.site-nav li:first-child a{padding-left:0}
@media(max-width:600px){.site-nav ul{padding-inline:1.25rem}.site-nav li:first-child a{padding-left:0}}


/* ---- ページ切り替え ---- */
main>section:first-child{border-top:none}
.site-nav a.on{color:var(--ai);font-weight:700}
.site-nav a.on::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;background:var(--ai)}
.site-nav li{position:relative}

/* ---- ホームの入口タイル ---- */
.tiles-sec{border-top:1px solid var(--line)}
.tiles{display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:1.4rem}
@media(min-width:700px){.tiles{grid-template-columns:1fr 1fr}}
.tile{
  display:block;background:var(--surface);padding:1.3rem 1.3rem;text-decoration:none;color:inherit;
  transition:background .15s ease;
}
.tile:hover{background:var(--ai-soft)}
.tile:focus-visible{outline:3px solid var(--hinoki);outline-offset:-3px}
.tile b{
  display:flex;align-items:center;gap:.6em;
  font-family:var(--f-disp);font-size:1.08rem;color:var(--ai);margin-bottom:.35rem;
}
.tile b::after{content:"";width:.5em;height:.5em;border-top:2px solid currentColor;border-right:2px solid currentColor;transform:rotate(45deg);margin-left:auto}
.tile span{display:block;font-size:.85rem;color:var(--muted);line-height:1.75}

/* ---- ヒーロー ---- */
.hero{
  position:relative;overflow:hidden;border-top:none;
  padding-block:clamp(3rem,9vw,6.5rem) clamp(3.5rem,9vw,6rem);
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:linear-gradient(160deg,#000 0%,transparent 62%);
  mask-image:linear-gradient(160deg,#000 0%,transparent 62%);
}
.hero .wrap{position:relative;z-index:1}
/* スマホ：見出し → 写真 → 本文 → ボタン の順に並べ替える */
.hero-grid{display:flex;flex-direction:column;gap:0}
.hero-txt{display:contents}
.hero-txt .eyebrow{order:1}
.hero-txt h1{order:2}
.hero-photo{order:3;margin:0 0 1.9rem;max-width:225px}
.hero-txt .lead{order:4}
.hero-txt .cta-row{order:5}
@media(min-width:900px){
  .hero-grid{display:grid;grid-template-columns:1.45fr .55fr;gap:3.4rem;align-items:end}
  .hero-txt{display:block}
  .hero-photo{margin:0;max-width:none}
}
.hero-photo img{display:block;width:100%;aspect-ratio:3/4;object-fit:cover;border:1px solid var(--line)}
.hero-photo figcaption{margin-top:.75rem;font-size:.82rem;color:var(--muted);line-height:1.8}
.hero-photo figcaption strong{color:var(--ink)}
.hero h1{
  font-size:clamp(2.1rem,6.4vw,4rem);
  letter-spacing:.02em;line-height:1.35;margin-bottom:1.6rem;
}
.hero h1 em{font-style:normal;color:var(--ai);border-bottom:3px solid var(--hinoki);padding-bottom:.08em}
.lead{max-width:var(--read);color:var(--muted);font-size:1.02rem;margin:0 0 2.2rem}
.lead strong{color:var(--ink);font-weight:700}

.cta-row{display:flex;flex-wrap:wrap;gap:.85rem}
.btn{
  display:inline-flex;align-items:center;gap:.55em;
  padding:.95rem 1.7rem;border-radius:2px;
  font-weight:700;font-size:1rem;text-decoration:none;
  border:1.5px solid var(--ai);transition:transform .15s ease,opacity .15s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn:focus-visible{outline:3px solid var(--hinoki);outline-offset:3px}
.btn-primary{background:var(--ai);color:var(--on-ai)}
.btn-ghost{background:transparent;color:var(--ai)}
.btn .num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---- 小さな工事のカード ---- */
.h2-lg{font-size:clamp(1.55rem,3.6vw,2.3rem);margin-bottom:1rem}
.sec-lead{max-width:var(--read);color:var(--muted);margin:0 0 2.5rem}

.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
@media(min-width:700px){.cards{grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}}
.card{background:var(--surface);padding:1.1rem 1rem}
@media(min-width:700px){.card{padding:1.5rem 1.4rem}}
.card h3{font-size:1.05rem;margin-bottom:.4rem;font-family:var(--f-body);font-weight:700}
.card p{margin:0;font-size:.82rem;color:var(--muted);line-height:1.75}
@media(min-width:700px){.card p{font-size:.88rem;line-height:1.8}}

.pull{
  margin-top:2.5rem;padding:1.6rem 1.8rem;
  background:var(--ai-soft);border-left:4px solid var(--ai);
  font-family:var(--f-disp);font-size:clamp(1.05rem,2.4vw,1.35rem);font-weight:600;line-height:1.8;
}

/* ---- 2カラム ---- */
.split{display:grid;grid-template-columns:1fr;gap:2.5rem}
@media(min-width:820px){.split{grid-template-columns:1.15fr .85fr;gap:4rem}}
.split p{margin:0 0 1.1rem}
.side-list{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}
.side-list li{padding:.9rem 0;border-bottom:1px solid var(--line);font-size:.93rem;display:flex;gap:.7rem}
.side-list li::before{content:"";flex:none;width:.55em;height:.55em;margin-top:.62em;border-top:2px solid var(--hinoki);border-left:2px solid var(--hinoki)}

/* ---- 流れ（本当に順番があるのでナンバリング） ---- */
.flow{margin:0;padding:0;list-style:none;display:grid;gap:0;counter-reset:step}
.flow li{
  counter-increment:step;
  display:grid;grid-template-columns:auto 1fr;gap:1.4rem;
  padding:1.5rem 0;border-bottom:1px solid var(--line);
}
.flow li:first-child{border-top:1px solid var(--line)}
.flow li::before{
  content:counter(step);
  font-family:var(--f-disp);font-size:1.7rem;font-weight:700;color:var(--hinoki);
  line-height:1.2;min-width:1.4em;font-variant-numeric:tabular-nums;
}
.flow h3{font-size:1.05rem;font-family:var(--f-body);font-weight:700;margin-bottom:.25rem}
.flow p{margin:0;color:var(--muted);font-size:.9rem}

/* ---- 会社概要 ---- */
.table-scroll{overflow-x:auto}
table{border-collapse:collapse;width:100%;min-width:32rem;font-size:.94rem}
th,td{text-align:left;padding:1rem 1.2rem;border-bottom:1px solid var(--line);vertical-align:top}
th{width:9.5rem;font-weight:700;color:var(--muted);font-size:.86rem;letter-spacing:.06em;white-space:nowrap;background:var(--ai-soft)}
td{font-variant-numeric:tabular-nums}
.todo{color:var(--hinoki);font-weight:700}

/* ---- お問い合わせ ---- */
.contact{background:var(--ai);color:var(--on-ai);border-top:none}
.contact .eyebrow{color:var(--on-ai);opacity:.75}
.contact h2{color:var(--on-ai);font-size:clamp(1.6rem,4vw,2.4rem);margin-bottom:1rem}
.contact p{color:var(--on-ai);opacity:.85;max-width:var(--read);margin:0 0 2.2rem}
.contact .btn{border-color:var(--on-ai)}
.contact .btn-primary{background:var(--on-ai);color:var(--ai)}
.contact .btn-ghost{color:var(--on-ai)}
.big-tel{
  display:inline-block;font-family:var(--f-body);font-weight:700;
  font-size:clamp(2rem,7vw,3.2rem);letter-spacing:.03em;
  font-variant-numeric:tabular-nums;text-decoration:none;line-height:1.2;margin-bottom:.4rem;
}
.tel-note{font-size:.85rem;opacity:.8;margin-bottom:2rem !important}



/* ---- 施工例 ---- */
.works{display:grid;gap:2.8rem;margin-top:2.5rem}
.work{border:1px solid var(--line);background:var(--surface)}
.work-imgs{display:grid;grid-template-columns:1fr;gap:1px;background:var(--line)}
@media(min-width:600px){.work-imgs.two{grid-template-columns:1fr 1fr}}
.work figure{margin:0;position:relative;background:var(--surface)}
.work img{display:block;width:100%;aspect-ratio:3/4;object-fit:cover}
.work figcaption{
  position:absolute;top:0;left:0;
  background:var(--ai);color:var(--on-ai);
  font-size:.72rem;font-weight:700;letter-spacing:.18em;
  padding:.4rem .9rem;
}
.work figcaption.after{background:var(--hinoki)}
@media(min-width:600px){.work-imgs.three{grid-template-columns:1fr 1fr 1fr}}
.work-imgs.mini{grid-template-columns:1fr 1fr 1fr;max-width:560px;margin-inline:auto}
.work-imgs.one{max-width:190px;margin-inline:auto}
.work-imgs.mini2{grid-template-columns:1fr 1fr;max-width:400px;margin-inline:auto}
.work-imgs.mini2 figcaption{font-size:.6rem;letter-spacing:.1em;padding:.25rem .5rem}
.work-imgs.wide:not(.two){max-width:260px;margin-inline:auto}
.work-imgs.mini figcaption{font-size:.6rem;letter-spacing:.1em;padding:.25rem .5rem}
.work-imgs.wide img{aspect-ratio:4/3}
.work-imgs.two.wide{grid-template-columns:1fr 1fr;max-width:460px;margin-inline:auto}
.work-imgs.two.wide figcaption{font-size:.6rem;letter-spacing:.1em;padding:.25rem .5rem}
.about-photos{display:grid;grid-template-columns:1fr;gap:.55rem;margin:0;max-width:225px}
.about-photos img{display:block;width:100%;aspect-ratio:3/4;object-fit:cover;border:1px solid var(--line)}
.about-fig{margin:0 0 1.8rem}
.noto{margin-top:2.2rem;padding-top:1.7rem;border-top:1px solid var(--line)}
.noto-imgs{display:grid;grid-template-columns:1fr 1fr;gap:.5rem;margin-bottom:1rem}
.noto-imgs figure{margin:0}
.noto-imgs img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;border:1px solid var(--line)}
.noto-imgs figcaption{font-size:.72rem;color:var(--muted);margin-top:.4rem;line-height:1.6}
.noto p{font-size:.94rem}
.about-fig figcaption{font-size:.82rem;color:var(--muted);line-height:1.8;margin-top:.7rem}
.work-txt{padding:1.5rem 1.5rem 1.7rem}
.work-txt h3{font-family:var(--f-body);font-size:1.08rem;font-weight:700;margin-bottom:.5rem}
.work-txt p{margin:0;font-size:.9rem;color:var(--muted);line-height:1.85}
/* パソコンでは 写真を左・文章を右に並べる */
@media(min-width:820px){
  .work{display:grid;grid-template-columns:360px 1fr;align-items:start}
  .work-imgs{padding:1.5rem 0 1.5rem 1.5rem}
  .work-txt{padding:1.5rem 1.8rem}
  .work-txt p{max-width:42rem}
}

/* ---- フォーム ---- */
.form{display:grid;gap:1.2rem;max-width:38rem;margin-top:2rem}
/* パソコンではフォームを2列に */
@media(min-width:820px){
  .form{grid-template-columns:1fr 1fr;max-width:46rem;column-gap:1.4rem}
  .form>.field:nth-of-type(5),.form>.form-note,.form>.btn,.form>button{grid-column:1 / -1}
}
/* パソコンでは会社概要を2列に */
@media(min-width:900px){
  .table-scroll{display:grid;grid-template-columns:1fr 1fr;column-gap:2.6rem;align-items:start}
  .table-scroll table{display:contents}
  .table-scroll tbody{display:contents}
}
.field{display:grid;gap:.4rem}
.field label{font-size:.85rem;font-weight:700;letter-spacing:.05em}
.field .req{color:var(--hinoki);font-size:.75rem;margin-left:.4em}
.field input,.field select,.field textarea{
  font:inherit;font-size:1rem;color:var(--ink);background:var(--surface);
  border:1.5px solid var(--line);border-radius:2px;padding:.8rem .9rem;width:100%;
}
.field textarea{min-height:8rem;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{outline:3px solid var(--hinoki);outline-offset:1px;border-color:var(--ai)}
.form-note{font-size:.8rem;color:var(--muted);margin:0}
#sent{display:none;margin-top:1.5rem;padding:1.4rem 1.5rem;background:var(--ai-soft);border-left:4px solid var(--ai)}
#sent.on{display:block}
#sent h3{font-family:var(--f-body);font-size:1rem;margin-bottom:.6rem}
#sent textarea{width:100%;min-height:9rem;font:inherit;font-size:.88rem;padding:.8rem;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:2px}

/* ---- フッター ---- */
footer{padding-block:2.5rem 6rem;border-top:1px solid var(--line);font-size:.82rem;color:var(--muted)}
@media(min-width:768px){footer{padding-bottom:2.5rem}}

/* ---- スマホ固定の電話バー ---- */
.callbar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;
  display:grid;grid-template-columns:1fr 1fr;
  background:var(--surface);border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(0,0,0,.10);
}
.callbar a{
  padding:1rem .5rem;text-align:center;font-weight:700;font-size:.95rem;
  text-decoration:none;color:var(--ai);
}
.callbar a:first-child{background:var(--ai);color:var(--on-ai)}
@media(min-width:768px){.callbar{display:none}}

@media(prefers-reduced-motion:reduce){*{transition:none !important;animation:none !important}}