/* ============================================================
   煉瓦工房 — レンガ工事専門店
   ・色は実物のアンティークレンガから拾う（彩度を落とした赤茶／焦げ茶／白目地）
   ・構造の飾りは「積みパターン」と「アーチ」だけ。レンガの文法で作る
   ・元写真が最大400〜500pxなので、写真は必ず枠（額）の中に置いて小さく強く見せる
   ============================================================ */
:root{
  /* 素地 */
  --ground:#F4EFE6;          /* 漆喰・モルタル */
  --surface:#FFFDF9;
  --mortar:#E9E0D1;          /* 目地 */
  --mortar-deep:#D9CCB8;
  --rule:#DED2BF;
  /* 焼き物 */
  --ink:#2A201A;             /* 焼けた鉄 */
  --ink-soft:#6B5B4D;
  --ink-faint:#9C8B7A;
  --brick:#A34A2A;           /* アンティーク赤レンガ */
  --brick-deep:#6E2E17;
  --brick-light:#C4795A;
  --brick-wash:#F6E7DE;
  --char:#33291F;            /* 焼過ぎレンガ */
  --gold:#B8893A;
  /* レンガ寸法（実寸比 210×60 に近い比率） */
  --bw:104px; --bh:30px; --joint:2px;
  --shadow-s:0 1px 2px rgba(42,32,26,.05), 0 6px 18px rgba(42,32,26,.06);
  --shadow-m:0 2px 8px rgba(42,32,26,.07), 0 22px 46px rgba(42,32,26,.13);
  --arch:50% 50% 6px 6px / 30% 30% 3px 3px;   /* アーチ（半円＋直方体） */
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--ground);color:var(--ink);
  font-family:"Zen Kaku Gothic New","Hiragino Kaku Gothic ProN","Noto Sans JP",system-ui,sans-serif;
  font-size:16px;line-height:1.95;-webkit-font-smoothing:antialiased;text-underline-offset:.25em;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brick-deep)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.narrow{max-width:820px;margin:0 auto}
h1,h2,h3,h4{font-family:"Zen Antique","Shippori Mincho","Hiragino Mincho ProN",serif;
  font-weight:400;line-height:1.5;text-wrap:balance;margin:0}
.mincho{font-family:"Zen Antique","Shippori Mincho",serif}
:focus-visible{outline:2px solid var(--brick);outline-offset:2px}

/* ---------- レンガの積みパターン（走り目地／stretcher bond） ---------- */
.brickpat{
  background-color:var(--brick);
  background-image:
    linear-gradient(90deg, var(--mortar) var(--joint), transparent 0),
    linear-gradient(90deg, var(--mortar) var(--joint), transparent 0),
    linear-gradient(0deg,  var(--mortar) var(--joint), transparent 0);
  background-size: var(--bw) calc(var(--bh)*2), var(--bw) calc(var(--bh)*2), 100% var(--bh);
  background-position: 0 0, calc(var(--bw)/2) var(--bh), 0 0;
}
.brickband{height:26px;--joint:2px;opacity:.9}
.brickband.soft{--brick:var(--mortar-deep);--mortar:var(--ground);opacity:1;height:18px}

/* ---------- ヘッダー ---------- */
.hd{position:sticky;top:0;z-index:60;background:rgba(244,239,230,.95);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)}
.hd-in{max-width:1300px;margin:0 auto;padding:9px 22px;display:flex;align-items:center;gap:14px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:inherit;flex:none}
.brand img{width:48px}
.brand b{font-family:"Zen Antique",serif;font-size:20px;font-weight:400;letter-spacing:.1em;display:block;line-height:1.2}
.brand small{display:block;font-size:9.5px;color:var(--ink-faint);letter-spacing:.22em}
.nav{margin-left:auto;display:flex;gap:1px;align-items:center;flex-wrap:wrap}
.nav a{padding:7px 10px;font-size:13px;text-decoration:none;color:var(--ink);border-radius:3px;white-space:nowrap}
.nav a:hover{background:var(--mortar);color:var(--brick-deep)}
.nav a.on{color:var(--brick-deep);font-weight:700;box-shadow:inset 0 -2px 0 var(--brick)}
.hd-tel{flex:none;display:flex;flex-direction:column;align-items:flex-end;line-height:1.15;text-decoration:none;color:inherit;padding-left:8px}
.hd-tel b{font-family:"Zen Antique",serif;font-size:21px;letter-spacing:.02em;color:var(--brick-deep);font-weight:400}
.hd-tel span{font-size:9.5px;color:var(--ink-faint);letter-spacing:.06em}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--rule);border-radius:4px;padding:9px 13px;font-size:13px;cursor:pointer;color:var(--ink)}
@media(max-width:1180px){
  .nav{display:none;order:3;width:100%;flex-direction:column;align-items:stretch;gap:0;padding-top:6px}
  .nav.open{display:flex}
  .nav a{padding:13px 8px;border-bottom:1px solid var(--rule);border-radius:0}
  .burger{display:block} .hd-in{flex-wrap:wrap} .hd-tel{margin-left:10px}
}

/* ---------- ヒーロー（背景動画／写真スライドショー） ---------- */
.hero{position:relative;min-height:clamp(500px,80vh,720px);display:flex;align-items:flex-end;
  overflow:hidden;background:var(--char)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg video,.hero-bg .slide{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-bg .slide{opacity:0;transition:opacity 2.4s ease;animation:kb 18s ease-in-out infinite alternate;will-change:transform}
.hero-bg .slide.on{opacity:1}
@keyframes kb{from{transform:scale(1.02)}to{transform:scale(1.16)}}
@media (prefers-reduced-motion:reduce){.hero-bg .slide{animation:none}}
.hero::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(88deg,rgba(28,20,15,.90) 0%,rgba(28,20,15,.70) 44%,rgba(28,20,15,.34) 74%,rgba(28,20,15,.46) 100%)}
.hero-in{position:relative;z-index:2;width:100%;padding:96px 0 74px;color:#fff}
.hero-eye{display:flex;align-items:center;gap:12px;margin-bottom:22px;color:#E8C98A;
  font-size:11.5px;letter-spacing:.26em}
.hero-eye::before{content:"";width:46px;height:1px;background:#E8C98A;display:block}
.hero h1{font-size:clamp(34px,6.6vw,72px);letter-spacing:.05em;line-height:1.34;margin:0 0 22px;color:#fff;
  text-shadow:0 2px 26px rgba(0,0,0,.42)}
.hero h1 em{font-style:normal;color:#F0C98C}
.hero p{max-width:31em;font-size:clamp(14.5px,1.6vw,17px);color:rgba(255,255,255,.90);margin:0 0 32px;
  text-shadow:0 1px 14px rgba(0,0,0,.5)}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.hero-badges span{font-size:11.5px;letter-spacing:.08em;padding:6px 15px;border:1px solid rgba(255,255,255,.4);
  border-radius:999px;color:#fff;backdrop-filter:blur(4px)}
.hero-note{position:absolute;right:22px;bottom:16px;z-index:2;font-size:10.5px;color:rgba(255,255,255,.55);letter-spacing:.05em}

/* ---------- ボタン ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;padding:16px 32px;border-radius:2px;
  text-decoration:none;font-weight:700;font-size:15px;border:1.5px solid transparent;letter-spacing:.04em;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease}
.btn-p{background:var(--brick);color:#fff;box-shadow:0 6px 20px rgba(163,74,42,.34)}
.btn-p:hover{background:var(--brick-deep);transform:translateY(-2px);box-shadow:0 12px 28px rgba(110,46,23,.4)}
.btn-g{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.55)}
.btn-g:hover{background:rgba(255,255,255,.18)}
.btn-o{background:var(--surface);color:var(--brick-deep);border-color:var(--brick)}
.btn-o:hover{background:var(--brick-wash)}
.btns{display:flex;gap:13px;flex-wrap:wrap}

/* ---------- セクション ---------- */
section{padding:clamp(60px,8vw,110px) 0}
.tint{background:var(--mortar)}
.dark{background:var(--char);color:#F2E9DC}
.dark h2,.dark h3{color:#fff}
.dark p{color:rgba(242,233,220,.82)}
.sec-head{margin-bottom:48px;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:11px;letter-spacing:.26em;
  color:var(--gold);margin-bottom:14px;font-weight:700}
.eyebrow::before,.eyebrow::after{content:"";width:26px;height:1px;background:var(--gold);opacity:.55}
.sec-head h2{font-size:clamp(25px,3.9vw,40px);letter-spacing:.05em}
.sec-head p{color:var(--ink-soft);max-width:44em;margin:16px auto 0;font-size:15px}
.lead{color:var(--ink-soft);font-size:15.5px}

/* ---------- アーチ額装（写真はすべてこの中に置く） ---------- */
.frame{position:relative;background:var(--mortar);padding:9px;box-shadow:var(--shadow-s)}
.frame>img{width:100%;display:block}
.frame.arched{border-radius:var(--arch);padding:11px}
.frame.arched>img{border-radius:calc(50% - 4px) calc(50% - 4px) 3px 3px / 29% 29% 2px 2px}

/* ---------- 3本柱 ---------- */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
@media(max-width:900px){.pillars{grid-template-columns:1fr;max-width:420px;margin:0 auto}}
.pillar{text-align:center}
.pillar .frame{margin-bottom:22px}
.pillar .frame>img{aspect-ratio:4/3;object-fit:cover}
.pillar h3{font-size:21px;margin-bottom:11px;letter-spacing:.04em}
.pillar p{font-size:14px;color:var(--ink-soft);margin:0 0 16px;text-align:left}
.pillar a{font-size:13px;font-weight:700;text-decoration:none;color:var(--brick-deep);letter-spacing:.06em}
.pillar a::after{content:" ―→"}

/* ---------- 実績カード ---------- */
.works{display:grid;grid-template-columns:repeat(auto-fill,minmax(252px,1fr));gap:26px}
.card{background:var(--surface);text-decoration:none;color:inherit;display:flex;flex-direction:column;
  box-shadow:var(--shadow-s);transition:transform .18s ease,box-shadow .18s ease;border:1px solid var(--rule)}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-m)}
.card .ph{aspect-ratio:4/3;background:var(--mortar);overflow:hidden;padding:8px}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .ph img{transform:scale(1.06)}
.card-b{padding:14px 17px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.cat{align-self:flex-start;font-size:10px;letter-spacing:.13em;padding:3px 9px;
  background:var(--brick);color:#fff;font-weight:700}
.card h3{font-size:15.5px;line-height:1.6;font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700}
.card p{font-size:12.5px;color:var(--ink-soft);margin:0;line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- フィルタ ---------- */
.filters{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:42px}
.filters button{font:inherit;font-size:13.5px;padding:10px 20px;border:1px solid var(--rule);
  background:var(--surface);color:var(--ink);cursor:pointer;transition:all .15s ease}
.filters button:hover{border-color:var(--brick);color:var(--brick-deep)}
.filters button.on{background:var(--brick);border-color:var(--brick);color:#fff;font-weight:700}

/* ---------- 図鑑グリッド（レンガの種類・魅力・グッズ） ---------- */
.zukan{display:grid;grid-template-columns:repeat(auto-fill,minmax(228px,1fr));gap:24px}
.zk{background:var(--surface);border:1px solid var(--rule);box-shadow:var(--shadow-s);
  display:flex;flex-direction:column}
.zk .ph{padding:8px;background:var(--mortar)}
.zk .ph img{width:100%;aspect-ratio:4/3;object-fit:cover}
.zk-b{padding:15px 17px 19px}
.zk h3{font-size:16px;margin-bottom:7px;letter-spacing:.03em}
.zk p{font-size:13px;color:var(--ink-soft);margin:0;line-height:1.85;white-space:pre-line}
.zk .price{display:inline-block;margin-top:11px;font-size:12.5px;font-weight:700;color:var(--brick-deep);
  background:var(--brick-wash);padding:3px 10px}
.zk .soldout{display:inline-block;margin-top:11px;font-size:11.5px;color:var(--ink-faint);
  border:1px solid var(--rule);padding:2px 9px}

/* ---------- 用途（レンガの魅力） ---------- */
.uses{display:flex;flex-direction:column;gap:0}
.use{display:grid;grid-template-columns:minmax(0,42%) minmax(0,58%);align-items:center;gap:clamp(24px,4vw,54px);
  padding:clamp(30px,4vw,52px) 0;border-bottom:1px solid var(--rule)}
.use:last-child{border-bottom:none}
.use:nth-child(even)>.frame{order:2}
@media(max-width:820px){.use{grid-template-columns:1fr;gap:20px}.use:nth-child(even)>.frame{order:0}}
.use h3{font-size:23px;margin-bottom:12px;letter-spacing:.05em}
.use p{color:var(--ink-soft);font-size:15px;margin:0;white-space:pre-line}
.use .n{font-family:"Zen Antique",serif;font-size:12px;letter-spacing:.2em;color:var(--gold);display:block;margin-bottom:8px}

/* ---------- 事例詳細 ---------- */
.crumbs{font-size:12.5px;color:var(--ink-soft);padding:22px 0 0}
.crumbs a{color:var(--ink-soft)}
.gal{display:grid;grid-template-columns:1fr 330px;gap:36px;align-items:start}
@media(max-width:900px){.gal{grid-template-columns:1fr}}
.gal-main{background:var(--mortar);padding:10px;box-shadow:var(--shadow-s)}
.gal-main img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#fff}
.gal-cap{padding:11px 4px 2px;font-size:13px;color:var(--ink-soft);text-align:center}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:8px;margin-top:12px}
.thumbs button{padding:3px;border:1px solid var(--rule);background:var(--mortar);cursor:pointer;aspect-ratio:4/3}
.thumbs button img{width:100%;height:100%;object-fit:cover}
.thumbs button.on{border-color:var(--brick);box-shadow:0 0 0 2px var(--brick-wash)}
.spec{background:var(--surface);border:1px solid var(--rule);padding:28px;box-shadow:var(--shadow-s)}
.spec h1{font-size:23px;margin:11px 0 18px;letter-spacing:.04em}
.spec .body{font-size:14.5px;color:var(--ink-soft);white-space:pre-line;margin-bottom:24px}

/* ---------- 表 ---------- */
.tblwrap{overflow-x:auto;border:1px solid var(--rule);background:var(--surface);box-shadow:var(--shadow-s)}
table{border-collapse:collapse;width:100%;min-width:440px;font-size:14.5px}
th,td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--rule)}
thead th{background:var(--mortar);font-size:11.5px;letter-spacing:.14em;color:var(--ink-soft);font-weight:700}
td.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:700;color:var(--brick-deep)}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:none}
.note{font-size:13px;color:var(--ink-soft);margin-top:14px}

/* ---------- 汎用 ---------- */
.prose{font-size:15.5px;color:#4A3B31}
.prose h3{font-size:21px;margin:38px 0 12px;letter-spacing:.04em}
.prose p{margin:0 0 17px}
.panel{background:var(--surface);border:1px solid var(--rule);padding:clamp(24px,4vw,42px);box-shadow:var(--shadow-s)}
.panel+.panel{margin-top:22px}
.soon{background:var(--brick-wash);border:1px dashed var(--brick);padding:26px;text-align:center;color:var(--brick-deep)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media(max-width:820px){.grid2{grid-template-columns:1fr}}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.tile{background:var(--mortar);padding:22px}
.tile b{display:block;font-size:16px;margin-bottom:7px;font-family:"Zen Antique",serif;font-weight:400;letter-spacing:.03em}
.tile p{font-size:13.5px;color:var(--ink-soft);margin:0}

/* ---------- 施工の流れ ---------- */
.steps{counter-reset:s;display:flex;flex-direction:column;gap:0;padding:0;margin:0;list-style:none}
.steps li{counter-increment:s;position:relative;padding:24px 0 24px 82px;border-bottom:1px solid var(--rule)}
.steps li:last-child{border-bottom:none}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:22px;
  font-family:"Zen Antique",serif;font-size:26px;color:var(--brick);letter-spacing:.02em;
  width:54px;text-align:center;border-right:1px solid var(--rule);padding-right:14px;line-height:1.2}
.steps b{display:block;font-size:18px;margin-bottom:5px;font-family:"Zen Antique",serif;font-weight:400;letter-spacing:.05em}
.steps span{font-size:14.5px;color:var(--ink-soft);white-space:pre-line}

/* ---------- FAQ ---------- */
.faq{border:1px solid var(--rule);background:var(--surface)}
.faq details{border-bottom:1px solid var(--rule)}
.faq details:last-child{border-bottom:none}
.faq summary{padding:20px 26px;cursor:pointer;font-weight:700;font-size:15.5px;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q";font-family:"Zen Antique",serif;color:var(--brick);margin-right:14px;font-size:17px}
.faq summary::after{content:"＋";position:absolute;right:24px;color:var(--ink-faint)}
.faq details[open] summary::after{content:"−"}
.faq .a{padding:0 26px 24px 62px;color:var(--ink-soft);font-size:14.5px}

/* ---------- CTA ---------- */
.cta{position:relative;background:var(--char);color:#fff;text-align:center;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;opacity:.14;
  background-color:var(--brick);
  background-image:
    linear-gradient(90deg,#000 2px,transparent 0),
    linear-gradient(90deg,#000 2px,transparent 0),
    linear-gradient(0deg,#000 2px,transparent 0);
  background-size:104px 60px,104px 60px,100% 30px;
  background-position:0 0,52px 30px,0 0}
.cta>*{position:relative;z-index:1}
.cta h2{color:#fff;font-size:clamp(24px,3.8vw,38px);margin-bottom:18px;letter-spacing:.05em}
.cta p{color:rgba(255,255,255,.82);max-width:38em;margin:0 auto 32px}
.cta .tel{font-family:"Zen Antique",serif;font-size:clamp(30px,5.4vw,50px);color:#fff;text-decoration:none;display:inline-block;letter-spacing:.03em}
.cta .telsub{font-size:12.5px;color:rgba(255,255,255,.62);letter-spacing:.08em;margin-top:4px}

/* ---------- フォーム ---------- */
.form{display:flex;flex-direction:column;gap:19px}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px}
.req{color:#fff;background:var(--brick);font-size:10px;padding:2px 7px;margin-left:8px;vertical-align:2px}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:15px;padding:14px 15px;
  border:1px solid var(--rule);background:var(--surface);color:var(--ink);border-radius:2px}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--brick);outline-offset:1px}
.field textarea{min-height:155px;resize:vertical}
.hint{font-size:12.5px;color:var(--ink-soft);margin-top:6px}

/* ---------- フッター ---------- */
footer{background:var(--char);color:rgba(242,233,220,.7);padding:0 0 30px;font-size:13.5px}
footer .wrap{padding-top:54px}
footer a{color:rgba(242,233,220,.88);text-decoration:none}
footer a:hover{color:#fff;text-decoration:underline}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;margin-bottom:38px}
@media(max-width:820px){.f-grid{grid-template-columns:1fr;gap:28px}}
.f-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.f-brand img{width:54px}
.f-brand b{font-family:"Zen Antique",serif;font-size:20px;color:#fff;display:block;font-weight:400;letter-spacing:.1em}
.f-brand small{font-size:9.5px;letter-spacing:.22em;color:rgba(255,255,255,.55)}
footer h4{color:#fff;font-size:12px;letter-spacing:.16em;margin-bottom:14px;font-family:"Zen Kaku Gothic New",sans-serif}
footer ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px}
.copy{border-top:1px solid rgba(255,255,255,.13);padding-top:22px;font-size:11.5px;color:rgba(255,255,255,.45);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.sticky-cta{display:none}
@media(max-width:700px){
  .sticky-cta{display:grid;grid-template-columns:1fr 1fr;gap:8px;position:fixed;bottom:0;left:0;right:0;z-index:70;
    padding:9px 11px;background:rgba(244,239,230,.97);border-top:1px solid var(--rule);backdrop-filter:blur(8px)}
  .sticky-cta a{text-align:center;justify-content:center;padding:14px 8px;font-size:14px}
  body{padding-bottom:76px}
  .hero-in{padding:70px 0 56px}
}