/* ==========================================================
   Stork Square株式会社 — corporate site
   ========================================================== */

:root{
  --paper:#FAF9F6;
  --paper-raised:#FFFFFF;
  --ink:#1B2430;
  --ink-soft:#4A5568;
  --ink-faint:#7A8494;
  --line:#E2E0D9;
  --line-strong:#C9C6BC;
  --accent:#1F3A5F;
  --accent-soft:#E7ECF3;
  --shadow:0 1px 2px rgba(27,36,48,.05), 0 10px 30px -18px rgba(27,36,48,.25);
}

@media (prefers-color-scheme: dark){
  :root{
    --paper:#14181D;
    --paper-raised:#1B2027;
    --ink:#ECEAE4;
    --ink-soft:#A8AEB8;
    --ink-faint:#7C838E;
    --line:#2A3038;
    --line-strong:#3A414B;
    --accent:#9BB4D8;
    --accent-soft:#222C3A;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 10px 30px -18px rgba(0,0,0,.7);
  }
}

*{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic Medium","Yu Gothic",
              -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}

a{color:var(--accent);}
a:hover{opacity:.75;}

.wrap{
  max-width:880px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- Header ---------- */
.site-header{
  border-bottom:1px solid var(--line);
  background:var(--paper);
  position:sticky;
  top:0;
  z-index:10;
}
.site-header .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:64px;
  flex-wrap:wrap;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:var(--ink);
}
.brand .mark{
  width:30px;height:30px;
  flex-shrink:0;
}

/* The logo files are single-colour paths, so they are painted as CSS masks —
   that way they follow currentColor in both light and dark themes. */
@supports (mask-image:url(logo.svg)) or (-webkit-mask-image:url(logo.svg)){
  .brand .mark{
    background-color:currentColor;
    -webkit-mask:url(logo-mark.svg) no-repeat center/contain;
    mask:url(logo-mark.svg) no-repeat center/contain;
  }
  .hero-logo{
    background-color:currentColor;
    -webkit-mask:url(logo.svg) no-repeat center/contain;
    mask:url(logo.svg) no-repeat center/contain;
  }
}
.hero-logo{
  width:104px;
  height:104px;
  margin:0 0 28px;
}
.brand .name{
  font-family:"Hiragino Mincho ProN","Yu Mincho",serif;
  font-size:17px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
}
.nav{
  display:flex;
  gap:20px;
  font-size:13.5px;
}
.nav a{
  color:var(--ink-soft);
  text-decoration:none;
}
.nav a:hover{color:var(--accent);opacity:1;}

/* ---------- Hero ---------- */
.hero{
  padding:88px 0 72px;
  border-bottom:1px solid var(--line);
}
.eyebrow{
  font-family:"SF Mono","Menlo",ui-monospace,monospace;
  font-size:11.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--ink-faint);
  margin:0 0 14px;
}
.hero h1{
  font-family:"Hiragino Mincho ProN","Yu Mincho",serif;
  font-weight:600;
  font-size:clamp(26px,4.6vw,40px);
  line-height:1.45;
  letter-spacing:.01em;
  margin:0 0 20px;
  text-wrap:balance;
}
.hero p{
  font-size:16px;
  color:var(--ink-soft);
  max-width:58ch;
  margin:0;
}

/* ---------- Page head (sub pages) ---------- */
.page-head{
  padding:64px 0 32px;
  border-bottom:1px solid var(--line);
}
.page-head h1{
  font-family:"Hiragino Mincho ProN","Yu Mincho",serif;
  font-weight:600;
  font-size:clamp(23px,3.4vw,30px);
  margin:0 0 8px;
}
.page-head p{
  margin:0;
  font-size:14px;
  color:var(--ink-faint);
}

/* ---------- Sections ---------- */
section{padding:64px 0;}
section + section{border-top:1px solid var(--line);}

.section-label{
  display:flex;
  align-items:baseline;
  gap:14px;
  margin:0 0 28px;
}
.section-label h2{
  font-family:"Hiragino Mincho ProN","Yu Mincho",serif;
  font-size:20px;
  font-weight:600;
  margin:0;
  white-space:nowrap;
}
.section-label .en{
  font-family:"SF Mono","Menlo",ui-monospace,monospace;
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-faint);
  white-space:nowrap;
}
.section-label .rule{
  flex:1;
  height:1px;
  background:var(--line-strong);
}

/* ---------- Business cards ---------- */
.cards{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:18px;
}
.card{
  background:var(--paper-raised);
  border:1px solid var(--line);
  border-left:3px solid var(--accent);
  border-radius:8px;
  padding:22px 24px;
  box-shadow:var(--shadow);
}
.card h3{
  font-size:15.5px;
  font-weight:600;
  margin:0 0 10px;
  line-height:1.6;
}
.card p{
  margin:0;
  font-size:13.5px;
  color:var(--ink-soft);
  line-height:1.8;
}

/* ---------- Definition table (会社概要) ---------- */
.spec{
  width:100%;
  border-collapse:collapse;
  background:var(--paper-raised);
  border:1px solid var(--line);
  border-radius:8px;
  overflow:hidden;
  box-shadow:var(--shadow);
  font-size:14.5px;
}
.spec th,
.spec td{
  text-align:left;
  vertical-align:top;
  padding:14px 20px;
  border-bottom:1px solid var(--line);
  line-height:1.8;
}
.spec tr:last-child th,
.spec tr:last-child td{border-bottom:none;}
.spec th{
  width:11em;
  font-weight:600;
  color:var(--ink-soft);
  background:var(--accent-soft);
  white-space:nowrap;
}
.spec td ol{
  margin:0;
  padding-left:1.3em;
}
.spec .sub{
  display:block;
  font-size:12.5px;
  color:var(--ink-faint);
}

/* ---------- Contact ---------- */
.contact-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:14px;
  max-width:34em;
}
.contact-list li{
  background:var(--paper-raised);
  border:1px solid var(--line);
  border-radius:8px;
  padding:16px 20px;
  box-shadow:var(--shadow);
}
.contact-list .k{
  display:block;
  font-family:"SF Mono","Menlo",ui-monospace,monospace;
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-faint);
  margin-bottom:4px;
}
.contact-list .v{
  font-size:16px;
  font-weight:600;
  word-break:break-all;
}
.note{
  font-size:13px;
  color:var(--ink-faint);
  margin-top:20px;
}

/* ---------- Legal document body ---------- */
.doc{padding:48px 0 72px;}
.doc h2{
  font-family:"Hiragino Mincho ProN","Yu Mincho",serif;
  font-size:18px;
  font-weight:600;
  margin:40px 0 12px;
  padding-bottom:8px;
  border-bottom:1px solid var(--line);
}
.doc h2:first-of-type{margin-top:8px;}
.doc h3{
  font-size:15px;
  font-weight:600;
  margin:24px 0 8px;
}
.doc p{
  margin:0 0 14px;
  font-size:14.5px;
  color:var(--ink-soft);
}
.doc ul,
.doc ol{
  margin:0 0 14px;
  padding-left:1.5em;
  font-size:14.5px;
  color:var(--ink-soft);
}
.doc li{margin-bottom:6px;}
.doc .updated{
  font-size:13px;
  color:var(--ink-faint);
  margin-top:40px;
  padding-top:16px;
  border-top:1px solid var(--line);
}

/* ---------- Footer ---------- */
.site-footer{
  border-top:1px solid var(--line-strong);
  padding:36px 0 48px;
  font-size:13px;
  color:var(--ink-faint);
}
.site-footer .wrap{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  flex-wrap:wrap;
}
.site-footer nav{display:flex;gap:18px;}
.site-footer a{color:var(--ink-soft);text-decoration:none;}
.site-footer a:hover{color:var(--accent);}

/* ---------- Responsive ---------- */
@media (max-width:640px){
  .hero{padding:56px 0 48px;}
  section{padding:48px 0;}
  .spec th,
  .spec td{display:block;width:auto;}
  .spec th{
    border-bottom:none;
    padding-bottom:4px;
    white-space:normal;
  }
  .spec td{padding-top:0;}
  .site-header .wrap{padding-top:10px;padding-bottom:10px;}
  .nav{gap:14px;font-size:13px;}
}