/* ========== 共通（全ページ共通のCSS：変数・ヘッダー・フッター・パーツ） ========== */
:root{
  --navy:#1f3a4d;
  --navy-d:#162a38;
  --accent:#c0784a;
  --accent-d:#a4623a;
  --cream:#faf7f2;
  --sand:#efe8dc;
  --text:#2b2f33;
  --muted:#6b737a;
  --line:#e2dccf;
  --white:#fff;
  --max:1120px;
  --serif:"Noto Serif JP","Hiragino Mincho ProN",serif;
  --sans:"Noto Sans JP","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--text);background:var(--white);line-height:1.85;font-size:16px;-webkit-text-size-adjust:100%}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.sec{padding:96px 0}
.sec--cream{background:var(--cream)}
.sec--navy{background:var(--navy);color:#fff}
.en{font-family:var(--serif);font-size:13px;letter-spacing:.28em;color:var(--accent);text-transform:uppercase}
.h2{font-family:var(--serif);font-size:34px;line-height:1.5;font-weight:600;margin:8px 0 20px}
.lead{color:var(--muted);max-width:640px}
.sec--navy .lead{color:#cfd8de}
.center{text-align:center}.center .lead{margin:0 auto}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:16px 36px;border-radius:2px;font-weight:700;letter-spacing:.06em;transition:background .2s;border:0;cursor:pointer;font-size:16px;font-family:inherit}
.btn:hover{background:var(--accent-d)}
.btn--line{background:transparent;border:1px solid #fff}
.btn--line:hover{background:rgba(255,255,255,.14)}

/* ヘッダー */
.hd{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.hd__in{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-family:var(--serif);font-size:22px;font-weight:700;color:var(--navy);letter-spacing:.06em;display:flex;align-items:center;gap:10px}
.logo i{display:inline-block;width:26px;height:26px;background:var(--accent);clip-path:polygon(50% 0,100% 45%,100% 100%,0 100%,0 45%)}
.gnav{display:flex;align-items:center;gap:30px;font-size:15px;font-weight:500}
.gnav a:hover{color:var(--accent)}
.gnav a.is-cur{color:var(--accent);font-weight:700}
.gnav .btn{padding:10px 22px;font-size:14px;color:#fff}
.gnav .btn:hover{color:#fff}
.burger{display:none;width:44px;height:44px;border:0;background:none;cursor:pointer;position:relative;z-index:70}
.burger span{position:absolute;left:10px;right:10px;height:2px;background:var(--navy);transition:.25s}
.burger span:nth-child(1){top:14px}.burger span:nth-child(2){top:21px}.burger span:nth-child(3){top:28px}
.burger[aria-expanded=true] span:nth-child(1){top:21px;transform:rotate(45deg)}
.burger[aria-expanded=true] span:nth-child(2){opacity:0}
.burger[aria-expanded=true] span:nth-child(3){top:21px;transform:rotate(-45deg)}

/* 下層ページ見出し */
.phead{background:var(--navy);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.phead::after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border:1px solid rgba(255,255,255,.14);border-radius:50%}
.phead .en{color:#e3a77f}
.phead h1{font-family:var(--serif);font-size:38px;font-weight:600;margin-top:4px}
.crumb{background:var(--cream);font-size:13px;color:var(--muted);padding:12px 0;border-bottom:1px solid var(--line)}
.crumb a:hover{color:var(--accent)}
.crumb span{margin:0 8px}

/* フッター */
.ft{background:var(--navy-d);color:#c4cfd6;padding:64px 0 24px;font-size:14px}
.ft__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.ft .logo{color:#fff;margin-bottom:12px}
.ft h4{color:#fff;font-size:14px;margin-bottom:12px;letter-spacing:.1em}
.ft li{margin-bottom:6px}.ft a:hover{color:#fff}
.ft__cp{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;text-align:center}

/* アニメーション */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.reveal.is-visible{opacity:1;transform:none}

/* ========== TOP（LP風） ========== */
.hero{position:relative;min-height:640px;display:flex;align-items:center;color:#fff;background:#243a48 url(img/hero.jpg) center/cover}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(22,42,56,.82) 0%,rgba(22,42,56,.45) 60%,rgba(22,42,56,.1) 100%)}
.hero .wrap{position:relative;width:100%}
.hero h1{font-family:var(--serif);font-size:48px;line-height:1.5;font-weight:600;margin:14px 0 20px}
.hero p{max-width:520px;color:#e6edf1;margin-bottom:32px}
.hero .btn+.btn{margin-left:12px}
.nums{background:var(--white);margin-top:-56px;position:relative;box-shadow:0 10px 30px rgba(0,0,0,.08);display:grid;grid-template-columns:repeat(4,1fr);text-align:center;border-radius:2px}
.nums div{padding:28px 10px;border-right:1px solid var(--line)}
.nums div:last-child{border:0}
.nums b{display:block;font-family:var(--serif);font-size:38px;color:var(--navy);line-height:1.2}
.nums b small{font-size:16px;margin-left:2px}
.nums span{font-size:13px;color:var(--muted)}
.reasons{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:48px}
.reason{background:#fff;border:1px solid var(--line)}
.reason img{aspect-ratio:3/2;object-fit:cover;width:100%}
.reason__b{padding:26px}
.reason__n{font-family:var(--serif);color:var(--accent);font-size:14px;letter-spacing:.2em}
.reason h3{font-family:var(--serif);font-size:21px;margin:4px 0 10px;line-height:1.5}
.reason p{font-size:15px;color:var(--muted)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split img{width:100%;aspect-ratio:4/3;object-fit:cover}
.checks li{padding-left:30px;position:relative;margin-bottom:12px}
.checks li::before{content:"";position:absolute;left:0;top:8px;width:16px;height:9px;border-left:3px solid var(--accent);border-bottom:3px solid var(--accent);transform:rotate(-45deg)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:44px}
.wcard{display:block;background:#fff}
.wcard__img{overflow:hidden}
.wcard__img img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:transform .5s}
.wcard:hover img{transform:scale(1.05)}
.wcard__b{padding:16px 4px}
.tag{display:inline-block;font-size:12px;background:var(--sand);color:var(--navy);padding:2px 10px;border-radius:2px;margin-right:6px}
.wcard h3{font-size:17px;margin:8px 0 2px;font-weight:700}
.wcard small{color:var(--muted)}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:48px;counter-reset:s}
.step{padding:0 14px;text-align:center;position:relative}
.step::before{counter-increment:s;content:counter(s);display:flex;align-items:center;justify-content:center;width:56px;height:56px;margin:0 auto 14px;border-radius:50%;background:var(--accent);color:#fff;font-family:var(--serif);font-size:22px;position:relative;z-index:1}
.step::after{content:"";position:absolute;top:28px;left:50%;width:100%;height:1px;background:rgba(255,255,255,.3)}
.step:last-child::after{display:none}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:13.5px;color:#cfd8de;line-height:1.7}
.voices{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;margin-top:44px}
.voice{background:#fff;padding:30px;border:1px solid var(--line);position:relative}
.voice::before{content:"“";position:absolute;top:2px;left:18px;font-family:var(--serif);font-size:72px;color:var(--sand);line-height:1}
.voice p{position:relative;font-size:15px}
.voice small{display:block;margin-top:14px;color:var(--muted)}
.faq{max-width:800px;margin:40px auto 0}
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:36px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:-4px;font-size:26px;color:var(--accent);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq p{margin-top:10px;color:var(--muted);font-size:15px}
.cta{background:linear-gradient(rgba(22,42,56,.88),rgba(22,42,56,.88)),url(img/living.jpg) center/cover;color:#fff;text-align:center;padding:88px 0}
.cta .h2{color:#fff}

/* ========== 下層（共通レイアウトA：本文＋サイドナビ／表／料金） ========== */
.two{display:grid;grid-template-columns:240px 1fr;gap:56px}
.side{position:sticky;top:96px;align-self:start;border:1px solid var(--line)}
.side h4{background:var(--navy);color:#fff;padding:12px 18px;font-size:14px;letter-spacing:.1em}
.side a{display:block;padding:12px 18px;border-top:1px solid var(--line);font-size:14.5px}
.side a:hover,.side a.is-cur{background:var(--cream);color:var(--accent);font-weight:700}
.art h2{font-family:var(--serif);font-size:26px;border-left:5px solid var(--accent);padding-left:14px;margin:0 0 18px;line-height:1.4}
.art h2:not(:first-child){margin-top:56px}
.art h3{font-size:18px;margin:28px 0 8px;color:var(--navy)}
.art p{margin-bottom:14px}
.art img{width:100%;aspect-ratio:16/7;object-fit:cover;margin:20px 0}
.tbl{width:100%;border-collapse:collapse;margin:10px 0 24px;font-size:15px}
.tbl th,.tbl td{border:1px solid var(--line);padding:14px 18px;text-align:left;vertical-align:top}
.tbl th{background:var(--cream);width:200px;white-space:nowrap}
.tbl thead th{background:var(--navy);color:#fff;white-space:normal;width:auto}
.price{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin:24px 0}
.plan{border:1px solid var(--line);padding:26px 22px;text-align:center;background:#fff}
.plan--rec{border:2px solid var(--accent);position:relative}
.plan--rec::before{content:"人気";position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;font-size:12px;padding:1px 14px}
.plan h3{margin:0 0 6px}
.plan b{display:block;font-family:var(--serif);font-size:30px;color:var(--navy)}
.plan small{color:var(--muted)}
.plan ul{text-align:left;margin-top:14px;font-size:14px}
.plan li{padding:6px 0 6px 20px;border-top:1px dashed var(--line);position:relative}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--accent)}
.note{background:var(--cream);border-left:4px solid var(--accent);padding:16px 20px;font-size:14.5px;margin:20px 0}

/* ========== 下層（レイアウトB：一覧＋絞り込み） ========== */
.filter{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.filter button{border:1px solid var(--line);background:#fff;padding:8px 20px;border-radius:999px;font-size:14px;cursor:pointer;font-family:inherit}
.filter button.is-on{background:var(--navy);color:#fff;border-color:var(--navy)}
.cards--4{grid-template-columns:repeat(3,1fr);margin-top:0}
.wcard.is-hide{display:none}

/* ========== 下層（レイアウトC：会社概要・沿革） ========== */
.tl{border-left:2px solid var(--line);margin:10px 0 24px 8px}
.tl li{position:relative;padding:0 0 22px 28px}
.tl li::before{content:"";position:absolute;left:-7px;top:8px;width:12px;height:12px;border-radius:50%;background:var(--accent)}
.tl b{font-family:var(--serif);color:var(--navy);margin-right:12px}
.staff{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:20px 0}
.staff div{text-align:center;border:1px solid var(--line);padding:22px 12px}
.staff i{display:block;width:84px;height:84px;border-radius:50%;background:var(--sand);margin:0 auto 12px;position:relative;overflow:hidden}
.staff i::before{content:"";position:absolute;left:50%;top:18px;width:28px;height:28px;border-radius:50%;background:#cfc4b0;transform:translateX(-50%)}
.staff i::after{content:"";position:absolute;left:50%;top:50px;width:58px;height:58px;border-radius:50%;background:#cfc4b0;transform:translateX(-50%)}
.map{aspect-ratio:16/7;background:repeating-linear-gradient(45deg,#ebe5d8,#ebe5d8 12px,#f3eee4 12px,#f3eee4 24px);display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px;margin:12px 0}

/* ========== フォーム ========== */
.form{max-width:760px;margin:0 auto}
.fr{display:grid;grid-template-columns:220px 1fr;gap:12px 24px;padding:20px 0;border-bottom:1px solid var(--line)}
.fr label,.fr .lb{font-weight:700;font-size:15px;padding-top:10px}
.req{display:inline-block;background:var(--accent);color:#fff;font-size:11px;padding:0 8px;margin-left:8px;border-radius:2px;font-weight:500}
.opt{display:inline-block;background:#b5bcc2;color:#fff;font-size:11px;padding:0 8px;margin-left:8px;border-radius:2px;font-weight:500}
.fr input[type=text],.fr input[type=email],.fr input[type=tel],.fr select,.fr textarea{width:100%;font:inherit;padding:12px 14px;border:1px solid #cfc8b8;border-radius:2px;background:#fff}
.fr textarea{min-height:170px}
.fr input:focus,.fr select:focus,.fr textarea:focus{outline:2px solid rgba(192,120,74,.45);border-color:var(--accent)}
.fr .chk{display:flex;flex-wrap:wrap;gap:8px 22px;padding-top:8px}
.err{color:#c0392b;font-size:13px;margin-top:4px;display:none}
.fr.is-err .err{display:block}
.fr.is-err input,.fr.is-err textarea,.fr.is-err select{border-color:#c0392b;background:#fff8f7}
.agree{text-align:center;margin:28px 0 10px;font-size:14.5px}
.sub{text-align:center;margin-top:20px}
.thanks{display:none;text-align:center;padding:56px 20px;border:1px solid var(--line);background:var(--cream);max-width:760px;margin:0 auto}
.thanks h2{font-family:var(--serif);font-size:26px;margin-bottom:10px}

/* ========== レスポンシブ ========== */
@media (max-width:900px){
  .sec{padding:64px 0}
  .h2{font-size:26px}
  .burger{display:block}
  .gnav{position:fixed;top:72px;left:0;right:0;bottom:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:12px 24px 40px;overflow-y:auto;transform:translateX(100%);transition:transform .3s;will-change:transform;z-index:60;visibility:hidden}
  .gnav.is-open{transform:none;visibility:visible}
  .gnav a{padding:18px 4px;border-bottom:1px solid var(--line);font-size:17px}
  .gnav .btn{margin-top:24px;text-align:center;padding:16px;font-size:16px;border-bottom:0}
  .hero{min-height:540px}
  .hero h1{font-size:31px}
  .hero .btn{padding:14px 24px}
  .hero .btn+.btn{margin:12px 0 0}
  .nums{grid-template-columns:repeat(2,1fr);margin-top:-36px}
  .nums div:nth-child(2){border-right:0}
  .nums div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .nums b{font-size:30px}
  .reasons,.cards,.cards--4,.voices,.price,.staff{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:28px}
  .steps{grid-template-columns:1fr;gap:26px}
  .step{display:grid;grid-template-columns:56px 1fr;text-align:left;gap:0 16px;padding:0}
  .step::before{grid-row:1/3;margin:0}
  .step::after{display:none}
  .two{grid-template-columns:1fr;gap:32px}
  .side{position:static}
  .phead h1{font-size:28px}
  .phead{padding:44px 0 38px}
  .tbl th,.tbl td{display:block;width:100%;border-bottom:0}
  .tbl tr{display:block;border-bottom:1px solid var(--line)}
  .tbl thead{display:none}
  .fr{grid-template-columns:1fr;gap:6px}
  .fr label,.fr .lb{padding-top:0}
  .ft__grid{grid-template-columns:1fr;gap:28px}
  .cta{padding:64px 0}
}