/* ===== SHARED DESIGN SYSTEM — しごとAI道場 ===== */
:root{--navy:#0B1736;--blue:#2563EB;--cyan:#22D3EE;--paper:#F8FAFC;--ink:#14213D;--muted:#52627B;--line:#D9E1EE}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:'Zen Kaku Gothic',sans-serif;line-height:1.8;overflow-x:hidden}
a{color:inherit;text-decoration:none}
h1,h2,h3,.lead,.btn,summary{word-break:auto-phrase;text-wrap:balance}
.skip-link{position:absolute;left:-9999px;background:var(--cyan);padding:10px 16px;z-index:99}
.skip-link:focus{left:8px;top:8px}
.wrap{width:min(1120px,calc(100% - 48px));margin:auto}
.eyebrow{font-family:'Space Grotesk',sans-serif;font-size:12px;letter-spacing:.16em;color:var(--blue);font-weight:700}

/* ===== HEADER ===== */
.site-header{position:fixed;top:0;z-index:10;left:0;right:0;background:var(--navy);color:white}
.site-header .wrap{height:80px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;color:white}
.brand img{width:28px;height:28px;object-fit:contain}
.nav{display:flex;gap:22px;font-size:14px;color:white;align-items:center}
.nav a{color:white;opacity:.82;transition:opacity .2s}
.nav a:hover{opacity:1}
.site-header .btn{white-space:nowrap}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:11px 24px;background:var(--blue);color:white;font-weight:700;border-radius:3px;transition:background .2s}
.btn:hover{background:#1d4ed8}
.btn--light{background:white;color:var(--navy)}
.btn--light:hover{background:#e2e8f0}
.btn--outline{background:transparent;color:white;border:2px solid white}
.btn--outline:hover{background:rgba(255,255,255,.1)}

/* ===== PAGE HERO (固定ページ共通バンド — トップのFVとは別物) ===== */
.page-hero{padding:140px 0 72px;background:var(--navy);color:white;position:relative;overflow:hidden}
.page-hero::after{content:'';position:absolute;inset:0;background:linear-gradient(rgba(34,211,238,.1) 1px,transparent 1px),linear-gradient(90deg,rgba(34,211,238,.1) 1px,transparent 1px);background-size:48px 48px;z-index:0;pointer-events:none}
.page-hero .wrap{position:relative;z-index:1}
.page-hero .eyebrow{color:var(--cyan)}
.page-hero h1{font-size:clamp(30px,4.5vw,52px);line-height:1.3;margin:10px 0 0}
.page-hero p{max-width:38em;color:#c9d8ff;margin-top:12px}

/* ===== SECTIONS ===== */
.section{padding:96px 0}
.section h2{font-size:clamp(28px,4vw,44px);line-height:1.35;margin:10px 0 24px}
.lead{font-size:18px;max-width:42em}
.section--compact{padding:64px 0}
.section--dark{background:var(--navy);color:white}
.section--light{background:white}
.section--tinted{background:#EAF1FF}
.demo{font-size:12px;color:#9fb0d0}
.demo-note{font-size:13px;color:var(--muted)}

/* ===== FEATURE BLOCK (2-col text+image) ===== */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.feature__image{width:100%;aspect-ratio:4/3;object-fit:cover}

/* ===== RULE LIST (numbered rows) ===== */
.rule-list{border-top:1px solid var(--line)}
.rule-list div{padding:18px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:60px 1fr;gap:12px;align-items:start}
.rule-list b{font-family:'Space Grotesk',sans-serif;color:var(--blue);font-size:18px}
.section--dark .rule-list{border-top-color:rgba(255,255,255,.2)}
.section--dark .rule-list div{border-bottom-color:rgba(255,255,255,.2)}
.section--dark .rule-list b{color:var(--cyan)}

/* ===== SERVICE GRID (bento) ===== */
.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:180px;gap:12px}
.service-card{position:relative;overflow:hidden;background:var(--navy);color:white;padding:20px;display:flex;align-items:end}
.service-card:first-child{grid-column:span 2;grid-row:span 2}
.service-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.48;transition:transform .6s}
.service-card:hover img{transform:scale(1.06)}
.service-card div{position:relative}
.service-card small{font-family:'Space Grotesk',sans-serif;color:var(--cyan)}

/* ===== SERVICE LIST (detail pages) ===== */
.service-list{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.service-item{background:white;padding:32px;border-left:3px solid var(--blue)}
.service-item h3{font-size:20px;margin:8px 0 12px}
.service-item p{color:var(--muted);margin:0}
.service-item .tag{font-family:'Space Grotesk',sans-serif;font-size:11px;letter-spacing:.12em;color:var(--blue);font-weight:700}

/* ===== PROCESS FLOW ===== */
.flow{width:min(680px,100%);margin:48px auto 0}
.step{display:grid;grid-template-columns:80px 1fr;gap:20px;border-left:2px solid var(--line);padding:0 0 32px 28px}
.step span{font-family:'Space Grotesk',sans-serif;font-size:26px;color:var(--blue);font-weight:700;line-height:1}
.step h3{margin:0 0 4px}
.step p{color:var(--muted);margin:0}

/* ===== FAQ ===== */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:20px 0}
.faq summary{cursor:pointer;font-weight:700;list-style:none}
.faq summary::after{content:'＋';float:right;color:var(--blue)}
.faq details[open] summary::after{content:'−'}
.faq p{max-width:50em;color:var(--muted);margin:12px 0 0}

/* ===== CTA BAND ===== */
.cta{background:linear-gradient(120deg,var(--navy),#123a91);color:white;padding:96px 0;text-align:center}
.cta h2{max-width:20em;margin-inline:auto;font-size:clamp(26px,4vw,42px)}
.cta p{max-width:36em;margin-inline:auto;color:#c9d8ff}
.cta .btn{margin-top:24px}

/* ===== CONTACT FORM ===== */
.form-wrap{background:white;padding:48px;max-width:660px;margin:0 auto}
.form-wrap p{color:var(--muted);margin:0 0 24px}
.form-info{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;padding-top:32px;border-top:1px solid var(--line)}
.form-info dt{font-size:13px;color:var(--muted)}
.form-info dd{font-weight:700;margin:0}

/* ===== ABOUT ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.about-image{width:100%;aspect-ratio:4/3;object-fit:cover}
.nap{background:var(--navy);color:white;padding:36px}
.nap dt{font-size:12px;color:var(--cyan);letter-spacing:.1em;margin-top:16px}
.nap dt:first-child{margin-top:0}
.nap dd{margin:4px 0 0;font-size:15px}

/* ===== FAQ 2-COLUMN VARIANT ===== */
.faq-2col details[open]{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.faq-2col details[open] summary{grid-column:1;grid-row:1}
.faq-2col details[open]>p{grid-column:2;grid-row:1;margin:0;color:var(--muted)}
@media(max-width:768px){
  .faq-2col details[open]{display:block}
  .faq-2col details[open]>p{margin-top:12px}
}

/* ===== PRIVACY ===== */
.prose h2{font-size:22px;margin:48px 0 12px;border-bottom:1px solid var(--line);padding-bottom:8px}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--muted);line-height:1.9}
.prose ol,.prose ul{padding-left:1.4em}

/* ===== FOOTER ===== */
.site-footer{background:#071027;color:#dbe7ff;padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:900;margin-bottom:10px}
.footer-brand img{width:26px;height:26px;object-fit:contain}
.footer-nav{font-size:14px;line-height:2}
.footer-nav a{color:#9fb0d0;transition:color .2s}
.footer-nav a:hover{color:white}
.footer-copy{font-size:12px;color:#4a5880;margin-top:32px;padding-top:20px;border-top:1px solid #1a2647}

/* ===== ACCESSIBILITY ===== */
a:focus-visible,.btn:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
@media(hover:none){.btn{min-height:44px}}

/* ===== ANIMATION ===== */
.j .reveal{animation:up .7s both}
@keyframes up{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  .site-header .nav{display:none}
  .site-header .btn{padding:9px 14px;font-size:13px}
  .page-hero{padding:120px 0 56px}
  .section{padding:64px 0}
  .feature{grid-template-columns:1fr;gap:28px}
  .service-list{grid-template-columns:1fr;gap:16px}
  .about-grid{grid-template-columns:1fr;gap:28px}
  .bento{grid-template-columns:1fr 1fr;grid-auto-rows:150px}
  .service-card:first-child{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .form-info{grid-template-columns:1fr}
  /* about page: company info + map stack on mobile */
  .about-company-grid{grid-template-columns:1fr !important}
  /* THREE PRINCIPLES: wrap to 2-col on narrow screens */
  .principles-row{grid-template-columns:48px 1fr !important}
  .principles-row h3{white-space:normal !important}
}
@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;scroll-behavior:auto!important}}