/* ===== 株式会社ツチカラ ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --soil:#5a4635;--soil-d:#3a2d22;--soil-l:#8b7561;
  --leaf:#3f6b3a;--leaf-d:#2c4c29;
  --ink:#231f1b;--ink-2:#5d564d;--ink-3:#8a8177;
  --line:#d9d3c7;--line-d:#b8ae9e;
  --bg:#fff;--bg-2:#f7f5f0;--bg-3:#efebe2;
  --w:1120px;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Noto Sans JP",system-ui,sans-serif;color:var(--ink);background:var(--bg);
  line-height:1.9;font-size:16px;word-break:auto-phrase;overflow-wrap:anywhere}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3,h4{line-height:1.45;font-weight:700}
.mincho{font-family:"Noto Serif JP",serif;font-weight:600}
.wrap{max-width:var(--w);margin:0 auto;padding:0 24px}
.narrow{max-width:840px;margin:0 auto;padding:0 24px}

/* header */
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100}
.hdr{display:flex;align-items:center;justify-content:space-between;height:80px;gap:20px}
.logo{display:flex;flex-direction:column;text-decoration:none;line-height:1.3;flex:none}
.logo b{font-family:"Noto Serif JP",serif;font-size:22px;letter-spacing:.05em;font-weight:600}
.logo span{font-size:10px;color:var(--ink-3);letter-spacing:.2em}
.gnav{display:flex;align-items:center;gap:26px}
.gnav a{text-decoration:none;font-size:13.5px;font-weight:500;padding:6px 0;border-bottom:2px solid transparent;white-space:nowrap}
.gnav a:hover,.gnav a[aria-current]{border-bottom-color:var(--leaf);color:var(--leaf-d)}
.hdr-cta{background:var(--soil);color:#fff;text-decoration:none;font-size:13px;font-weight:700;
  padding:11px 20px;white-space:nowrap;flex:none}
.hdr-cta:hover{background:var(--soil-d)}
.burger{display:none;background:none;border:1px solid var(--line-d);width:44px;height:40px;cursor:pointer;flex:none}
.burger span{display:block;width:20px;height:2px;background:var(--ink);margin:4px auto}

/* page head */
.phead{background:var(--bg-2);border-bottom:1px solid var(--line);padding:52px 0}
.phead h1{font-family:"Noto Serif JP",serif;font-size:32px;font-weight:600}
.phead .en{font-size:11px;letter-spacing:.24em;color:var(--leaf);margin-bottom:8px}
.phead p{font-size:14.5px;color:var(--ink-2);margin-top:14px;max-width:720px}
.crumb{font-size:12px;color:var(--ink-3);padding:14px 0}
.crumb a{text-decoration:none}.crumb a:hover{text-decoration:underline}

/* section */
section{padding:80px 0}
.sec-h{margin-bottom:44px}
.sec-h .en{font-size:11px;letter-spacing:.24em;color:var(--leaf);display:block;margin-bottom:8px}
.sec-h h2{font-family:"Noto Serif JP",serif;font-size:28px;font-weight:600;padding-bottom:16px;border-bottom:2px solid var(--soil)}
.sec-h p{font-size:14.5px;color:var(--ink-2);margin-top:16px}
.alt{background:var(--bg-2)}
.dark{background:var(--soil-d);color:#efe9e0}
.dark .sec-h h2{border-bottom-color:var(--soil-l)}
.dark .sec-h .en{color:#c5b49c}

/* hero */
.hero{position:relative;height:min(78vh,640px);min-height:460px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{content:"";position:absolute;inset:0;background:rgba(26,20,14,.55)}
.hero-in{position:relative;color:#fff;max-width:var(--w);margin:0 auto;padding:0 24px;width:100%}
.hero .badge{display:inline-block;border:1px solid rgba(255,255,255,.65);font-size:11px;
  letter-spacing:.22em;padding:6px 14px;margin-bottom:24px}
.hero h1{font-family:"Noto Serif JP",serif;font-size:clamp(32px,5.2vw,54px);font-weight:600;
  letter-spacing:.04em;margin-bottom:26px;text-shadow:0 2px 18px rgba(0,0,0,.4)}
.hero p{font-size:clamp(14px,1.6vw,16.5px);max-width:600px;margin-bottom:34px;text-shadow:0 1px 10px rgba(0,0,0,.5)}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;text-decoration:none;font-size:14px;font-weight:700;padding:15px 30px;border:2px solid}
.btn-p{background:#fff;color:var(--soil-d);border-color:#fff}
.btn-p:hover{background:transparent;color:#fff}
.btn-o{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-o:hover{background:#fff;color:var(--soil-d);border-color:#fff}
.btn-s{background:var(--soil);color:#fff;border-color:var(--soil)}
.btn-s:hover{background:var(--soil-d);border-color:var(--soil-d)}

/* stats */
.stats{background:var(--soil-d);color:#fff}
.stats-in{display:grid;grid-template-columns:repeat(5,1fr);padding:40px 0}
.stat{text-align:center;padding:8px 12px;border-right:1px solid rgba(255,255,255,.16)}
.stat:last-child{border-right:none}
.stat b{display:block;font-family:"Noto Serif JP",serif;font-size:30px;font-weight:600;line-height:1.2}
.stat span{font-size:11.5px;color:#c9bcab;letter-spacing:.08em}

/* split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.rev>div:first-child{order:2}
.split-txt h2{font-family:"Noto Serif JP",serif;font-size:30px;font-weight:600;margin-bottom:22px}
.split-txt p{font-size:15px;color:var(--ink-2);margin-bottom:18px}
.split-img{border:1px solid var(--line)}

/* cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{border:1px solid var(--line);background:#fff;display:flex;flex-direction:column}
.card-img{aspect-ratio:4/3;overflow:hidden;border-bottom:1px solid var(--line)}
.card-img img{width:100%;height:100%;object-fit:cover}
.card-b{padding:22px;flex:1;display:flex;flex-direction:column}
.card .no{font-family:"Noto Serif JP",serif;font-size:12px;color:var(--leaf);letter-spacing:.14em;margin-bottom:8px}
.card h3{font-size:17.5px;margin-bottom:10px}
.card p{font-size:13.5px;color:var(--ink-2);flex:1}
.card .more{font-size:12.5px;font-weight:700;color:var(--leaf-d);margin-top:16px;text-decoration:none}
.card .more:hover{text-decoration:underline}
a.card{text-decoration:none;color:inherit}

/* table */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th,.tbl td{padding:15px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl thead th{background:var(--bg-3);font-size:12.5px;font-weight:700;letter-spacing:.06em;border-bottom:2px solid var(--line-d)}
.tbl tbody th{width:30%;color:var(--ink-2);font-weight:500}
.tbl-scroll{overflow-x:auto}
.tbl code{font-family:ui-monospace,monospace;font-size:12.5px;background:var(--bg-3);padding:2px 7px}

/* steps */
.step{display:grid;grid-template-columns:340px 1fr;gap:36px;align-items:center;padding:38px 0;border-bottom:1px solid var(--line)}
.step:last-child{border-bottom:none}
.step:nth-child(even) .step-img{order:2}
.step-img{border:1px solid var(--line)}
.step-img img{aspect-ratio:4/3;object-fit:cover;width:100%}
.step-n{font-family:"Noto Serif JP",serif;font-size:13px;color:var(--leaf);letter-spacing:.16em;margin-bottom:10px}
.step h3{font-family:"Noto Serif JP",serif;font-size:22px;font-weight:600;margin-bottom:14px}
.step p{font-size:14.5px;color:var(--ink-2)}

/* list */
.arts{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.art{text-decoration:none;color:inherit;border:1px solid var(--line);background:#fff;display:flex;flex-direction:column}
.art-img{aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--line)}
.art-img img{width:100%;height:100%;object-fit:cover}
.art-b{padding:20px;flex:1}
.art-meta{display:flex;gap:10px;align-items:center;margin-bottom:10px}
.art-date{font-size:11.5px;color:var(--ink-3);letter-spacing:.04em}
.art-cat{font-size:10.5px;border:1px solid var(--leaf);color:var(--leaf-d);padding:2px 9px;letter-spacing:.08em}
.art h3{font-size:16px;margin-bottom:9px;line-height:1.6}
.art p{font-size:13px;color:var(--ink-2)}
.art:hover h3{color:var(--leaf-d)}

/* faq */
.faq-cat{font-family:"Noto Serif JP",serif;font-size:19px;font-weight:600;margin:44px 0 18px;
  padding-bottom:10px;border-bottom:2px solid var(--soil)}
.faq-cat:first-of-type{margin-top:0}
.qa{border:1px solid var(--line);margin-bottom:14px;background:#fff}
.qa summary{padding:19px 22px;cursor:pointer;font-weight:700;font-size:15px;display:flex;gap:14px;align-items:flex-start;list-style:none}
.qa summary::-webkit-details-marker{display:none}
.qa summary::before{content:"Q";font-family:"Noto Serif JP",serif;color:var(--leaf);flex:none;font-size:16px}
.qa summary::after{content:"＋";margin-left:auto;color:var(--ink-3);flex:none;font-size:15px}
.qa[open] summary::after{content:"−"}
.qa summary:hover{background:var(--bg-2)}
.qa-a{padding:0 22px 22px 56px;font-size:14.5px;color:var(--ink-2);border-top:1px solid var(--line);padding-top:18px}

/* note / cta */
.note{border:1px solid var(--line-d);background:var(--bg-2);padding:24px 26px;font-size:14px;color:var(--ink-2)}
.note b{color:var(--ink)}
.cta-band{background:var(--bg-3);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0;text-align:center}
.cta-band h2{font-family:"Noto Serif JP",serif;font-size:26px;font-weight:600;margin-bottom:16px}
.cta-band p{font-size:14.5px;color:var(--ink-2);margin-bottom:26px;max-width:620px;margin-inline:auto}

/* footer */
footer{background:var(--soil-d);color:#d9d0c3;padding:56px 0 26px;font-size:13px}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.14)}
.f-grid h4{font-size:12px;letter-spacing:.14em;color:#fff;margin-bottom:16px;font-weight:700}
.f-grid ul{list-style:none}
.f-grid li{margin-bottom:9px}
.f-grid a{text-decoration:none;color:#d9d0c3;font-size:13px}
.f-grid a:hover{color:#fff;text-decoration:underline}
.f-logo b{font-family:"Noto Serif JP",serif;font-size:19px;color:#fff;display:block;margin-bottom:6px;font-weight:600}
.f-logo p{line-height:1.9;color:#b6a998}
.f-desk{margin-top:26px;padding:18px 20px;border:1px solid rgba(255,255,255,.2)}
.f-desk b{color:#fff}
.f-demo{margin-top:22px;padding:16px 20px;border:1px solid #7d6a55;background:rgba(0,0,0,.18);color:#e8c98f;font-size:12.5px;line-height:1.85}
.f-demo b{color:#f3d9a0}
.f-bot{padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#9b8f7e;font-size:11.5px}

@media(max-width:1000px){
  .gnav{display:none}.burger{display:block}
  .grid-3,.arts{grid-template-columns:1fr 1fr}
  .grid-4{grid-template-columns:1fr 1fr}
  .stats-in{grid-template-columns:repeat(3,1fr);gap:20px 0}
  .stat:nth-child(3){border-right:none}
  .split,.step{grid-template-columns:1fr;gap:28px}
  .split.rev>div:first-child,.step:nth-child(even) .step-img{order:0}
  .f-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  section{padding:56px 0}
  .grid-3,.grid-2,.grid-4,.arts{grid-template-columns:1fr}
  .stats-in{grid-template-columns:1fr 1fr}
  .stat{border-right:none;border-bottom:1px solid rgba(255,255,255,.14);padding:14px}
  .f-grid{grid-template-columns:1fr}
  .phead h1{font-size:25px}
  .sec-h h2{font-size:22px}
  .qa-a{padding-left:22px}
}

.gnav-sp{display:none;flex-direction:column;border-top:1px solid var(--line);background:#fff}
.gnav-sp a{padding:15px 24px;text-decoration:none;font-size:14px;border-bottom:1px solid var(--line)}
@media(max-width:1000px){.gnav-sp:not([hidden]){display:flex}}