:root{
  --ink:#1f1d1b; --sub:#5f5a54; --paper:#fffdf9; --soft:#f6f2ec;
  --line:#e6dfd4; --gold:#a8894f; --line-green:#06c755;
  --serif:"Noto Serif JP","Hiragino Mincho ProN",serif;
  --sans:"Noto Sans JP","Hiragino Sans",sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.9;letter-spacing:.04em}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
/* header */
.site-header{position:sticky;top:0;z-index:10;background:rgba(255,253,249,.95);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo img{height:34px;width:auto}
.nav{display:flex;gap:28px;font-size:14px}
.nav a{text-decoration:none}
.nav a:hover{color:var(--gold)}
.btn-line{display:inline-flex;align-items:center;gap:8px;background:var(--line-green);color:#fff;text-decoration:none;padding:12px 26px;border-radius:999px;font-weight:700;letter-spacing:.08em}
.btn-line:hover{opacity:.85}
.header-line{padding:8px 18px;font-size:13px}
.menu-toggle{display:none}
/* hero */
.hero{padding:96px 0 88px;text-align:center;border-bottom:1px solid var(--line)}
.hero .eyebrow{font-size:13px;letter-spacing:.3em;color:var(--gold)}
.hero h1{font-family:var(--serif);font-weight:500;font-size:clamp(26px,4vw,40px);line-height:1.7;margin:18px 0}
.hero p{color:var(--sub);margin:0 0 36px}
/* sections */
section{padding:88px 0}
.sec-title{text-align:center;margin-bottom:48px}
.sec-title .en{font-family:var(--serif);font-size:13px;letter-spacing:.35em;color:var(--gold);display:block}
.sec-title h2{font-family:var(--serif);font-weight:500;font-size:clamp(22px,3vw,28px);margin:8px 0 0}
.lead{max-width:720px;margin:0 auto;text-align:center}
.bg-soft{background:var(--soft)}
.campaign{max-width:640px;margin:40px auto 0;border:1px solid var(--gold);padding:24px 28px;text-align:center;background:#fff}
.campaign strong{font-family:var(--serif);font-size:20px;color:var(--gold)}
/* products */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card{background:#fff;border:1px solid var(--line);text-decoration:none;display:block}
.card img{aspect-ratio:4/3;object-fit:cover;width:100%}
.card .body{padding:20px 22px 24px}
.card h3{font-family:var(--serif);font-weight:500;margin:0 0 6px;font-size:20px}
.card p{margin:0;font-size:14px;color:var(--sub)}
.card .more{display:inline-block;margin-top:12px;font-size:13px;color:var(--gold)}
/* reasons */
.reasons{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;counter-reset:r}
.reason{border-top:1px solid var(--gold);padding-top:20px}
.reason::before{counter-increment:r;content:"0" counter(r);font-family:var(--serif);color:var(--gold);font-size:22px}
.reason h3{font-family:var(--serif);font-weight:500;font-size:18px;margin:6px 0}
.reason p{margin:0;font-size:14px;color:var(--sub)}
/* works */
.works{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.works img{aspect-ratio:1/1;object-fit:cover;width:100%;background:#fff;border:1px solid var(--line)}
.center{text-align:center;margin-top:32px}
.link-more{color:var(--gold);font-size:14px}
/* flow */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;list-style:none;padding:0;margin:0}
.flow li{background:#fff;border:1px solid var(--line);padding:20px;font-size:14px}
.flow b{display:block;font-family:var(--serif);color:var(--gold);font-weight:500}
/* faq */
.faq{max-width:760px;margin:0 auto}
.faq details{border-bottom:1px solid var(--line);padding:18px 4px}
.faq summary{cursor:pointer;font-weight:700;list-style:none}
.faq summary::before{content:"Q.";font-family:var(--serif);color:var(--gold);margin-right:10px}
.faq details p{margin:10px 0 0;color:var(--sub)}
.placeholder{border:1px dashed var(--gold);background:#fffaf0;color:var(--sub);padding:14px 18px;font-size:13px;text-align:center}
/* cta */
.cta{text-align:center;background:var(--ink);color:#fff}
.cta h2{font-family:var(--serif);font-weight:500;font-size:clamp(22px,3vw,28px);margin:0 0 12px}
.cta p{color:#d9d3ca;margin:0 0 30px}
/* footer */
.site-footer{padding:48px 0;font-size:13px;color:var(--sub);text-align:center}
.site-footer nav{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 24px;margin-bottom:20px}
.site-footer a{text-decoration:none}
@media (max-width:820px){
  .nav,.header-line{display:none}
  .cards,.reasons{grid-template-columns:1fr}
  .works{grid-template-columns:repeat(3,1fr)}
  .flow{grid-template-columns:1fr 1fr}
  section{padding:64px 0}
  .hero{padding:64px 0}
}
/* lower pages */
.page-head{padding:72px 0 56px;text-align:center;border-bottom:1px solid var(--line)}
.page-head .en{font-family:var(--serif);font-size:13px;letter-spacing:.35em;color:var(--gold)}
.page-head h1{font-family:var(--serif);font-weight:500;font-size:clamp(26px,4vw,36px);margin:8px 0}
.crumb{font-size:12px;color:var(--sub);margin:0}
.crumb a{text-decoration:none}
.nav a[aria-current]{color:var(--gold)}
.em{font-weight:700}
.two{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.box{background:#fff;border:1px solid var(--line);padding:28px}
.box h3{font-family:var(--serif);font-weight:500;font-size:19px;margin:0 0 12px}
.box img{margin:0 auto 14px;max-height:360px;width:auto}
.parts{padding-left:1.4em}
.table-wrap{overflow-x:auto;max-width:860px;margin:0 auto}
table.price{width:100%;border-collapse:collapse;background:#fff;font-size:15px;min-width:420px}
table.price th{background:var(--ink);color:#fff;font-weight:500;padding:12px 14px;text-align:center}
table.price td{border-bottom:1px solid var(--line);padding:11px 14px}
table.price td.num{text-align:right;font-variant-numeric:tabular-nums}
table.price tbody tr:nth-child(even){background:#faf7f2}
.note{text-align:right;max-width:860px;margin:8px auto 0;font-size:13px;color:var(--sub)}
.works.tall{grid-template-columns:repeat(6,1fr)}
.works.tall img{aspect-ratio:auto;height:240px;object-fit:contain}
.tags{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;list-style:none;padding:0}
.tags li{border:1px solid var(--gold);padding:8px 18px;background:#fff}
.steps{list-style:none;padding:0;max-width:760px;margin:0 auto 40px;counter-reset:s}
.steps li{position:relative;padding:0 0 32px 36px;border-left:1px solid var(--gold);margin-left:10px}
.steps li::before{content:"";position:absolute;left:-7px;top:6px;width:13px;height:13px;border-radius:50%;background:var(--gold)}
.steps li:last-child{border-left-color:transparent}
.steps h3{font-family:var(--serif);font-weight:500;font-size:19px;margin:0 0 6px}
.steps p{margin:0;color:var(--sub)}
.spec dt{font-weight:700;margin-top:10px}
.spec dd{margin:0}
.news{list-style:none;padding:0;max-width:760px;margin:0 auto}
.news li{display:flex;gap:28px;border-bottom:1px solid var(--line);padding:22px 0}
.news time{font-family:var(--serif);color:var(--gold);white-space:nowrap}
.news h3{margin:0;font-size:16px}
.news p{margin:6px 0 0;color:var(--sub);font-size:14px}
.legal{display:grid;grid-template-columns:220px 1fr;max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
.legal dt,.legal dd{padding:16px;border-bottom:1px solid var(--line);margin:0}
.legal dt{background:var(--soft);font-weight:700}
@media (max-width:820px){
  .two,.three{grid-template-columns:1fr}
  .works.tall{grid-template-columns:repeat(3,1fr)}
  .legal{grid-template-columns:1fr}
  .legal dt{border-bottom:none}
  .news li{flex-direction:column;gap:4px}
}
@media (max-width:520px){table.price{min-width:0;font-size:13px}table.price th,table.price td{padding:8px 6px}}