/* ゼブラワークス 共通CSS（トップ index.html の <style> から共通部分を抽出） */
:root{--white:#fff;--band:#f4f4f2;--line:#d3d3cf;--muted:#555552;--ink:#1f2123;--max:1200px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--white);font-family:"Jost","Zen Kaku Gothic New",sans-serif;font-size:16px;line-height:1.8;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button,a{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.container{width:min(var(--max),calc(100% - 64px));margin-inline:auto}

.section{padding:120px 0}
.section-head{text-align:center;margin-bottom:64px}
.sec-en{display:inline-block;font-family:"Jost",sans-serif;font-weight:500;font-size:46px;line-height:1;letter-spacing:.32em;padding:0 0 0 .32em;min-width:240px}
.section-head h1,.section-head h2{margin:18px 0 0;font-size:15px;line-height:1.6;font-weight:400;letter-spacing:.3em}
.section-head p{margin-top:22px;margin-bottom:0;line-height:2;color:var(--muted);word-break:auto-phrase}

.btn{min-height:50px;padding:12px 28px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--ink);border-radius:0;background:var(--white);font-weight:700;letter-spacing:.04em;cursor:pointer;transition:background-color .2s ease}
.btn-primary{background:var(--ink);color:var(--white)}
.btn:hover{background:var(--band)}
.btn-primary:hover{background:#000}

header{position:relative;height:76px;display:flex;align-items:center;border-bottom:1px solid var(--line);background:var(--white)}
.header-inner{width:min(1360px,calc(100% - 64px));margin:auto;display:flex;align-items:center;justify-content:space-between;gap:28px}
.header-logo img{width:190px}
.header-nav{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:700;white-space:nowrap}
.header-nav a:hover{opacity:.55}
.header-mid{display:flex;align-items:center;gap:28px;flex:1;min-width:0}
.header-auth{display:flex;align-items:center;gap:16px;flex:0 0 auto;white-space:nowrap}
.header-auth a:not(.btn){font-weight:700;font-size:14px}
.header-auth a:not(.btn):hover{opacity:.55}
.header-auth .btn{min-height:44px;padding:9px 22px}
.header-logout{font:inherit;font-weight:700;font-size:14px;background:none;border:0;padding:0;cursor:pointer;display:inline-flex;align-items:center;min-height:44px}
.header-logout:hover{opacity:.55}
.header-logout[hidden],.header-nav [hidden],.header-auth [hidden]{display:none!important}
.header-menu-btn{display:none;align-items:center;justify-content:center;min-height:44px;min-width:44px;padding:0 14px;border:1px solid var(--ink);background:var(--white);font-weight:700;font-size:13px;cursor:pointer;flex:0 0 auto}
.header-menu{display:none;flex-direction:column;position:absolute;top:100%;left:0;right:0;border-top:1px solid var(--line);background:var(--white);z-index:20}
.header-menu a{display:flex;align-items:center;min-height:52px;padding:0 20px;font-weight:700;font-size:15px;border-top:1px solid var(--line)}
.header-menu a:first-child{border-top:0}
.header-menu a:hover{opacity:.6}
.header-menu.is-open{display:flex}
.logo-lockup{display:block;height:46px;width:auto}
.logo-footer{height:52px}

footer{padding:52px 0 26px;background:var(--ink);color:var(--white)}
.footer-top{display:grid;grid-template-columns:400px minmax(0,1fr);gap:56px;align-items:start}
.footer-brand img{width:180px;margin-bottom:17px}
.footer-brand p{margin:0;color:#d8d8d6;font-size:14px;line-height:1.8;word-break:auto-phrase}
.footer-nav{display:flex;flex-direction:column;align-items:flex-end;gap:20px;padding-top:5px}
.footer-links{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:11px 24px;font-size:14px}.footer-links a{display:inline-flex;align-items:center;min-height:44px}
.footer-links a:hover{opacity:.65}
.copyright{margin:38px 0 0;padding-top:19px;border-top:1px solid #494a4b;color:#aaa;font-size:14px;text-align:right}

.ph{display:inline-block}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease-out,transform .6s ease-out}
.reveal.is-visible{opacity:1;transform:none}

@media(max-width:1024px){
  .header-inner{width:calc(100% - 40px)}
  .header-mid{gap:16px}
  .header-nav{gap:16px}
  .header-auth{gap:12px}
  .header-logo img{width:165px}
}
@media(max-width:768px){
  .container{width:calc(100% - 32px)}
  .section{padding:80px 0}
  .section-head{margin-bottom:44px}
  .section-head h1,.section-head h2{font-size:14px}
  .sec-en{font-size:30px;letter-spacing:.24em;padding:0 0 0 .24em;min-width:180px}
  header{height:64px}
  .header-inner{width:calc(100% - 28px);gap:8px}
  .header-logo img{width:120px}
  .header-mid{gap:8px}
  .header-nav{display:none}
  .header-auth{gap:8px}
  .header-auth a:not(.btn){font-size:13px}
  .header-auth .btn{min-height:44px;padding:7px 12px;font-size:13px}
  .header-menu-btn{display:inline-flex}
  .logo-lockup{height:40px}
  .logo-footer{height:40px}
  .footer-top{grid-template-columns:minmax(0,1fr);gap:34px}
  .footer-nav{align-items:flex-start}
  .footer-links{justify-content:flex-start}
  .copyright{text-align:left}
}
@media(max-width:400px){
  .header-logo img{width:92px}
  .header-auth{gap:6px}
  .header-auth a:not(.btn){font-size:12px}
  .header-auth .btn{padding:6px 9px;font-size:12px}
  .header-menu-btn{padding:0 9px;font-size:12px;min-width:40px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-delay:0s!important;animation-iteration-count:1!important;transition-duration:.01ms!important;transition-delay:0s!important;scroll-behavior:auto!important}
}
[hidden]{display:none!important}
.logout-row{margin-top:72px;padding-top:28px;border-top:1px solid var(--line);text-align:center}.logout-row a{display:inline-flex;align-items:center;min-height:44px;font-size:14px;color:var(--muted);text-decoration:underline}
@media(max-width:420px){.header-logo img{width:104px;height:auto;max-width:none}.header-inner{gap:6px}.header-auth{gap:8px}.header-auth .btn{padding:6px 8px;font-size:13px}.header-menu-btn{padding:0 8px;min-width:0;font-size:13px}}