/* ===========================================================
   株式会社MOB コーポレートサイト 共通スタイル（B案ブルー）
   =========================================================== */
:root{
  --ground:#eef2f7; --surface:#ffffff; --surface-2:#f2f6fb;
  --ink:#111b2b; --ink-2:#43536a; --ink-3:#6a7a91;
  --line:#d3dce8; --line-2:#e3eaf3;
  --steel:#2b4a6f; --accent:#1668e3; --accent-2:#0f52b8; --accent-soft:#e7f0fd; --sky:#38b6f0; --accent-ink:#ffffff;
  --hero-ink:#f2f7fd; --hero-ink-2:#c2d4e8;
  --shadow:0 1px 2px rgba(17,27,43,.05),0 8px 30px rgba(17,27,43,.07);
  --shadow-lg:0 22px 55px rgba(17,40,80,.16);
  --maxw:1180px;
  --mono:ui-monospace,"SFMono-Regular","Cascadia Mono",Menlo,Consolas,monospace;
  --jp:"Yu Gothic Medium","Yu Gothic","YuGothic","Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP","Meiryo",sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --ground:#0b121d; --surface:#131d2c; --surface-2:#182436;
    --ink:#eaf1fa; --ink-2:#a9bbd2; --ink-3:#788aa3;
    --line:#26364c; --line-2:#1e2c40;
    --steel:#6f93c0; --accent:#3d8bff; --accent-2:#6aa6ff; --accent-soft:#17273f; --sky:#54c3f5; --accent-ink:#0b121d;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 34px rgba(0,0,0,.4);
    --shadow-lg:0 22px 55px rgba(0,0,0,.5);
  }
}
:root[data-theme="light"]{
  --ground:#eef2f7; --surface:#ffffff; --surface-2:#f2f6fb;
  --ink:#111b2b; --ink-2:#43536a; --ink-3:#6a7a91;
  --line:#d3dce8; --line-2:#e3eaf3;
  --steel:#2b4a6f; --accent:#1668e3; --accent-2:#0f52b8; --accent-soft:#e7f0fd; --sky:#38b6f0; --accent-ink:#ffffff;
  --hero-ink:#f2f7fd; --hero-ink-2:#c2d4e8;
  --shadow:0 1px 2px rgba(17,27,43,.05),0 8px 30px rgba(17,27,43,.07);
}
:root[data-theme="dark"]{
  --ground:#0b121d; --surface:#131d2c; --surface-2:#182436;
  --ink:#eaf1fa; --ink-2:#a9bbd2; --ink-3:#788aa3;
  --line:#26364c; --line-2:#1e2c40;
  --steel:#6f93c0; --accent:#3d8bff; --accent-2:#6aa6ff; --accent-soft:#17273f; --sky:#54c3f5; --accent-ink:#0b121d;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 34px rgba(0,0,0,.4);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0; background:var(--ground); color:var(--ink); font-family:var(--jp); line-height:1.85;
  letter-spacing:.012em; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 24px}
a{color:inherit; text-decoration:none}
img{max-width:100%; display:block}
h1,h2,h3,h4{text-wrap:balance; margin:0; font-weight:700; letter-spacing:.02em; line-height:1.3}

.eyebrow{font-family:var(--mono); font-size:.72rem; letter-spacing:.22em; text-transform:uppercase;
  color:var(--accent); font-weight:600; display:inline-flex; align-items:center; gap:.6em}
.eyebrow::before{display:none}

.btn{display:inline-flex; align-items:center; gap:.6em; font-weight:700; font-size:.9rem; letter-spacing:.04em;
  padding:.8em 1.5em; border-radius:100px; border:1.5px solid transparent; cursor:pointer;
  transition:transform .18s, background .18s, color .18s, border-color .18s, box-shadow .18s}
.btn-primary{background:var(--accent); color:var(--accent-ink); box-shadow:0 8px 20px rgba(29,111,224,.26)}
.btn-primary:hover{background:var(--accent-2); transform:translateY(-2px)}
.btn-ghost{border-color:var(--line); color:var(--ink); background:var(--surface)}
.btn-ghost:hover{border-color:var(--accent); color:var(--accent)}
.arw{font-family:var(--mono); transition:transform .18s}
.btn:hover .arw{transform:translateX(3px)}

/* ---------- header ---------- */
header.site{position:sticky; top:0; z-index:50; background:color-mix(in srgb,var(--ground) 84%, transparent);
  backdrop-filter:saturate(1.4) blur(10px); border-bottom:1px solid var(--line)}
.bar{display:flex; align-items:center; gap:24px; height:72px}
.brand{display:flex; align-items:center; font-weight:800; letter-spacing:.08em; font-size:1.18rem; color:var(--ink)}
.brand .logo{height:34px; width:auto; display:block}
@media (prefers-color-scheme:dark){ .brand .logo{filter:invert(1) brightness(1.15)} }
:root[data-theme="light"] .brand .logo{filter:none}
:root[data-theme="dark"] .brand .logo{filter:invert(1) brightness(1.15)}
nav.main{margin-left:auto; display:flex; align-items:center; gap:28px}
nav.main a{font-size:.88rem; letter-spacing:.05em; color:var(--ink-2); font-weight:600; position:relative; padding:6px 0}
nav.main a::after{content:""; position:absolute; left:0; bottom:0; width:0; height:2px; background:var(--accent); transition:width .25s}
nav.main a:hover{color:var(--ink)} nav.main a:hover::after{width:100%}
nav.main a.current{color:var(--accent)} nav.main a.current::after{width:100%}
.tel{display:flex; flex-direction:column; line-height:1.15; text-align:right}
.tel .num{font-family:var(--jp); font-weight:800; font-size:1.1rem; letter-spacing:.02em; color:var(--ink); font-variant-numeric:tabular-nums}
.tel .lbl{font-size:.6rem; letter-spacing:.14em; color:var(--ink-3); font-family:var(--mono)}
.menu-toggle{display:none; flex-direction:column; justify-content:center; gap:5px; width:44px; height:40px; padding:0; background:none; border:0; cursor:pointer; margin-left:auto}
.menu-toggle span{display:block; width:23px; height:2px; background:var(--ink); border-radius:2px; transition:transform .25s, opacity .2s}
.bar:has(nav.main.open) .menu-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.bar:has(nav.main.open) .menu-toggle span:nth-child(2){opacity:0}
.bar:has(nav.main.open) .menu-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-cta{display:none}

/* ---------- photo hero (home) ---------- */
.photo-hero{position:relative; min-height:660px; display:flex; align-items:flex-end; overflow:hidden;
  background:#0a1526 center/cover no-repeat; border-bottom:1px solid var(--line)}
.photo-hero .scrim{position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(100deg, rgba(6,13,24,.92) 0%, rgba(6,13,24,.7) 38%, rgba(6,13,24,.28) 68%, rgba(6,13,24,.05) 100%),
    linear-gradient(to top, rgba(6,13,24,.78) 0%, rgba(6,13,24,0) 55%)}
.photo-hero .wrap{position:relative; z-index:2; width:100%; padding:0 24px 92px}
.hero-inner{max-width:760px}
.photo-hero h1{color:var(--hero-ink); font-size:clamp(2.35rem,6.2vw,4.5rem); font-weight:800; line-height:1.14;
  margin:20px 0 0; text-shadow:0 2px 24px rgba(0,0,0,.4)}
.photo-hero h1 .em{color:var(--sky)}
.photo-hero p.lead{color:var(--hero-ink-2); font-size:clamp(1rem,1.6vw,1.18rem); margin:24px 0 0; max-width:32em;
  text-shadow:0 1px 16px rgba(0,0,0,.5)}
.photo-hero .cta{display:flex; flex-wrap:wrap; gap:14px; margin-top:38px}
.photo-hero .btn-ghost{border-color:rgba(255,255,255,.32); color:var(--hero-ink); background:transparent}
.photo-hero .btn-ghost:hover{border-color:rgba(255,255,255,.7)}

/* ---------- page hero (sub pages) ---------- */
.page-hero{position:relative; overflow:hidden; background:#0a1526 center/cover no-repeat; border-bottom:1px solid var(--line)}
.page-hero .scrim{position:absolute; inset:0;
  background:linear-gradient(105deg, rgba(8,17,32,.9) 20%, rgba(8,17,32,.6) 70%, rgba(15,45,92,.35) 100%)}
.page-hero .wrap{position:relative; z-index:2; padding:72px 24px 64px}
.breadcrumb{font-family:var(--mono); font-size:.68rem; letter-spacing:.08em; color:var(--hero-ink-2); margin-bottom:16px}
.breadcrumb a{color:var(--hero-ink-2)} .breadcrumb a:hover{color:#fff}
.breadcrumb span{opacity:.55; margin:0 .5em}
.page-hero h1{color:var(--hero-ink); font-size:clamp(1.9rem,4.4vw,3rem); letter-spacing:.03em}
.page-hero .en{display:block; font-family:var(--mono); font-size:.72rem; letter-spacing:.24em; color:var(--sky); margin-bottom:12px; font-weight:600}
.page-hero p{color:var(--hero-ink-2); margin:16px 0 0; max-width:40em; font-size:1rem}

/* ---------- section framing ---------- */
section{position:relative}
.pad{padding:92px 0}
.pad-sm{padding:64px 0}
.sec-head{max-width:46em; margin:0 auto 52px; text-align:center}
.sec-head.left{margin-left:0; text-align:left; max-width:none}
.sec-head h2{font-size:clamp(1.7rem,3.6vw,2.5rem); letter-spacing:.03em; margin-top:16px}
.sec-head p{color:var(--ink-2); margin:14px 0 0}
.sec-head .eyebrow{display:none}
.sec-head h2{margin-top:0}
.prose{max-width:44em; color:var(--ink-2); font-size:1.02rem}
.prose.center{margin:0 auto; text-align:center}
.tint{background:var(--surface-2)}
.plain{background:var(--surface)}

/* ---------- strengths (home) ---------- */
.strengths{background:var(--surface); border-bottom:1px solid var(--line)}
.strengths .grid{display:grid; grid-template-columns:repeat(3,1fr)}
.strengths .cell{padding:34px 30px; border-left:1px solid var(--line-2)}
.strengths .cell:first-child{border-left:0}
.strengths .k{font-family:var(--mono); font-size:.66rem; letter-spacing:.2em; color:var(--accent); font-weight:600}
.strengths h3{font-size:1.18rem; margin:12px 0 7px}
.strengths p{margin:0; font-size:.9rem; color:var(--ink-2)}

/* ---------- service cards (home) ---------- */
.svc{display:grid; grid-template-columns:1fr 1fr; gap:26px}
.card{background:var(--surface); border:1px solid var(--line); border-radius:14px; overflow:hidden;
  box-shadow:var(--shadow); display:flex; flex-direction:column; transition:transform .22s, box-shadow .22s}
.card:hover{transform:translateY(-4px); box-shadow:var(--shadow-lg)}
.card .ph{position:relative; aspect-ratio:16/10; overflow:hidden; background:#0f2036}
.card .ph img{width:100%; height:100%; object-fit:cover}
.card .ph .tag{position:absolute; left:14px; bottom:12px; z-index:2; font-family:var(--mono); font-size:.6rem;
  letter-spacing:.12em; color:#cfe0f2; background:rgba(8,17,32,.6); padding:.32em .7em; border-radius:100px}
.card .ph::after{content:""; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(to top, rgba(8,17,32,.62), rgba(8,17,32,0) 55%)}
.card .ph .cap-line{position:absolute; left:18px; right:18px; bottom:15px; z-index:2; color:#fff; font-weight:700;
  font-size:1.05rem; letter-spacing:.02em; text-shadow:0 2px 12px rgba(0,0,0,.55)}
.card .body{padding:26px; display:flex; flex-direction:column; gap:12px; flex:1}
.card h3{font-size:1.4rem}
.card p{margin:0; color:var(--ink-2); font-size:.94rem}
.card ul.tags{margin:4px 0 0; padding:0; list-style:none; display:flex; flex-wrap:wrap; gap:8px}
.card ul.tags li{font-size:.72rem; font-weight:600; color:var(--accent-2); background:var(--accent-soft); padding:.4em .9em; border-radius:100px}
.card .more{margin-top:auto; padding-top:14px; color:var(--accent); font-weight:700; font-size:.86rem}

/* ---------- feature grid (sub) ---------- */
.features{display:grid; grid-template-columns:repeat(2,1fr); gap:20px}
.feature{background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:28px; box-shadow:var(--shadow-sm)}
.feature .ic{width:46px; height:46px; border-radius:12px; background:var(--accent-soft); color:var(--accent);
  display:grid; place-items:center; margin-bottom:16px}
.feature h3{font-size:1.16rem; margin-bottom:8px}
.feature p{margin:0; color:var(--ink-2); font-size:.92rem}

/* ---------- image + text split ---------- */
.split{display:grid; grid-template-columns:1fr 1fr; gap:52px; align-items:center}
.split.rev .txt{order:2}
.split .ph{border-radius:14px; overflow:hidden; box-shadow:var(--shadow); aspect-ratio:16/11}
.split .ph img{width:100%; height:100%; object-fit:cover}
.split .kick{font-family:var(--mono); font-size:.76rem; letter-spacing:.08em; color:var(--accent); font-weight:700}
.split h3{font-size:1.7rem; margin:12px 0 14px}
.split p{color:var(--ink-2); margin:0 0 18px}
.split ul.tags{list-style:none; padding:0; margin:0 0 22px; display:flex; flex-wrap:wrap; gap:10px}
.split ul.tags li{font-size:.82rem; font-weight:600; color:var(--accent-2); background:var(--accent-soft); padding:.4em .95em; border-radius:100px}

/* ---------- flow / steps ---------- */
.flow{display:grid; grid-template-columns:repeat(4,1fr); gap:20px; counter-reset:step}
.step{background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:26px 24px; position:relative; box-shadow:var(--shadow)}
.step .n{counter-increment:step; font-family:var(--mono); font-weight:700; color:var(--accent); font-size:.9rem; letter-spacing:.08em}
.step .n::before{content:"STEP " counter(step,decimal-leading-zero)}
.step h3{font-size:1.1rem; margin:12px 0 8px}
.step p{margin:0; color:var(--ink-2); font-size:.88rem}

/* ---------- news / company (home) ---------- */
.news-list{display:flex; flex-direction:column; border-top:1px solid var(--line)}
.news-item{display:grid; grid-template-columns:130px 120px 1fr auto; align-items:center; gap:18px;
  padding:20px 6px; border-bottom:1px solid var(--line); transition:background .18s}
.news-item:hover{background:var(--surface-2)}
.news-item time{font-family:var(--mono); font-size:.82rem; color:var(--ink-3)}
.news-item .cat{font-family:var(--mono); font-size:.64rem; letter-spacing:.1em; justify-self:start; padding:.32em .7em;
  border-radius:100px; border:1px solid var(--line); color:var(--ink-2)}
.news-item .cat.info{color:var(--accent); border-color:color-mix(in srgb,var(--accent) 40%, var(--line))}
.news-item .ttl{font-size:.98rem} .news-item .arw{color:var(--ink-3)}
.cms-note{margin-top:20px; font-size:.8rem; color:var(--ink-3); font-family:var(--mono)}
.co-grid{display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:start}
table.co{width:100%; border-collapse:collapse}
table.co th,table.co td{text-align:left; padding:16px 4px; border-bottom:1px solid var(--line); vertical-align:top; font-size:.94rem}
table.co th{width:34%; font-weight:700} table.co td{color:var(--ink-2)}
.map{aspect-ratio:16/9; background:var(--surface-2); border:1px dashed var(--line); border-radius:10px;
  display:grid; place-items:center; font-family:var(--mono); font-size:.72rem; letter-spacing:.1em; color:var(--ink-3)}

/* ---------- form ---------- */
.form{max-width:720px; margin:0 auto; background:var(--surface); border:1px solid var(--line);
  border-radius:16px; padding:36px; box-shadow:var(--shadow)}
.form .row{display:grid; grid-template-columns:1fr 1fr; gap:18px}
.field{display:flex; flex-direction:column; gap:7px; margin-bottom:18px}
.field.full{grid-column:1 / -1}
.field label{font-size:.86rem; font-weight:700; color:var(--ink)}
.field label .req{color:var(--accent); font-size:.74rem; margin-left:.4em}
.field input,.field select,.field textarea{font-family:inherit; font-size:.96rem; color:var(--ink);
  background:var(--surface-2); border:1px solid var(--line); border-radius:9px; padding:.8em .9em; width:100%}
.field textarea{resize:vertical; min-height:140px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none; border-color:var(--accent);
  box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 20%, transparent)}
.form .submit{display:flex; align-items:center; gap:16px; flex-wrap:wrap; margin-top:6px}
.form .privacy{font-size:.8rem; color:var(--ink-3)}
.contact-aside{display:flex; flex-direction:column; gap:16px}
.contact-card{background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:24px; box-shadow:var(--shadow)}
.contact-card .lbl{font-family:var(--mono); font-size:.64rem; letter-spacing:.16em; color:var(--ink-3)}
.contact-card .big{font-family:var(--mono); font-weight:700; font-size:1.6rem; color:var(--ink); margin:4px 0}
.contact-card p{margin:0; color:var(--ink-2); font-size:.9rem}

/* ---------- contact top (電話・営業時間) ---------- */
.contact-top{display:grid; grid-template-columns:1fr 1fr; gap:24px; align-items:stretch}
.ct-phone{background:var(--surface); border:1px solid var(--line); border-radius:16px; padding:32px; box-shadow:var(--shadow); display:flex; flex-direction:column; justify-content:center; gap:8px}
.ct-phone .lbl{font-size:.82rem; color:var(--ink-3); font-weight:700; letter-spacing:.04em}
.ct-phone .num{font-family:var(--jp); font-weight:800; font-size:clamp(1.9rem,4vw,2.4rem); letter-spacing:.01em; color:var(--accent); line-height:1.05; font-variant-numeric:tabular-nums}
.ct-phone .sub{font-size:.84rem; color:var(--ink-2)}
.ct-hours{background:var(--surface); border:1px solid var(--line); border-radius:16px; padding:26px 30px; box-shadow:var(--shadow); display:flex; flex-direction:column; justify-content:center; gap:0}
.ct-hours > div{display:flex; justify-content:space-between; gap:16px; padding:11px 0; border-bottom:1px solid var(--line-2)}
.ct-hours > div:last-child{border-bottom:0}
.ct-hours .k{font-weight:700; color:var(--ink); font-size:.9rem}
.ct-hours .v{color:var(--ink-2); font-size:.9rem; text-align:right}
@media (max-width:900px){ .contact-top{grid-template-columns:1fr} }

/* ---------- recruit placeholder ---------- */
.recruit-ph{display:grid; place-items:center; background:var(--surface-2); border:1px dashed var(--line);
  color:var(--ink-3); font-family:var(--mono); font-size:.72rem; letter-spacing:.1em; text-align:center; padding:20px}

/* ---------- cta band ---------- */
.cta-band{background:linear-gradient(120deg,var(--accent),var(--accent-2) 70%, #123e86); color:#fff; position:relative; overflow:hidden}
.cta-band::before{content:""; position:absolute; inset:0;
  background:radial-gradient(circle at 1.5px 1.5px, rgba(255,255,255,.14) 1.5px, transparent 0) 0 0/26px 26px; opacity:.5}
.cta-band .wrap{position:relative; padding:74px 24px; display:flex; align-items:center; justify-content:space-between; gap:36px; flex-wrap:wrap}
.cta-band h2{color:#fff; font-size:clamp(1.6rem,3.4vw,2.3rem)}
.cta-band p{margin:12px 0 0; color:rgba(255,255,255,.86)}
.cta-band .btn-primary{background:#fff; color:var(--accent-2); box-shadow:0 10px 26px rgba(0,0,0,.2)}
.cta-band .btn-primary:hover{background:#eef4ff}
.cta-actions{text-align:right}
.cta-actions .lbl{font-family:var(--mono); font-size:.64rem; letter-spacing:.16em; color:rgba(255,255,255,.82)}
.cta-actions .big{display:block; font-family:var(--jp); font-weight:800; font-size:1.8rem; letter-spacing:.02em; color:#fff; margin-top:4px; font-variant-numeric:tabular-nums}

/* ---------- footer ---------- */
footer.site{background:var(--surface); border-top:1px solid var(--line); padding:52px 0 30px; color:var(--ink-2)}
.foot{display:flex; justify-content:space-between; gap:40px; flex-wrap:wrap}
.foot .brand{color:var(--ink); margin-bottom:14px}
.foot .desc{font-size:.86rem; color:var(--ink-3); max-width:24em}
.foot nav{display:flex; gap:26px; flex-wrap:wrap}
.foot nav a{font-size:.86rem; color:var(--ink-2)} .foot nav a:hover{color:var(--accent)}
.copy{margin-top:38px; padding-top:20px; border-top:1px solid var(--line-2); font-family:var(--mono);
  font-size:.7rem; letter-spacing:.06em; color:var(--ink-3); display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px}

.rv{opacity:1; transform:none; transition:opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1)}

/* ---------- responsive ---------- */
@media (max-width:900px){
  nav.main,.tel{display:none}
  .menu-toggle{display:flex}
  .bar .btn-primary{display:none}
  nav.main.open{display:flex; position:absolute; top:72px; left:0; right:0; flex-direction:column; align-items:flex-start;
    background:var(--surface); border-bottom:1px solid var(--line); padding:18px 24px; gap:16px; box-shadow:var(--shadow)}
  nav.main.open a{font-size:1rem}
  nav.main.open a::after{display:none}
  .split{grid-template-columns:1fr; gap:26px} .split.rev .txt{order:0}
  .features{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr 1fr}
  .svc{grid-template-columns:1fr}
  .co-grid{grid-template-columns:1fr; gap:32px}
  .form{padding:24px} .form .row{grid-template-columns:1fr}
  .news-item{grid-template-columns:96px 1fr; row-gap:6px}
  .news-item .cat{grid-row:1; grid-column:2; justify-self:start}
  .news-item time{grid-row:1; grid-column:1}
  .news-item .ttl{grid-column:1 / -1} .news-item .arw{display:none}
  .cta-actions{text-align:left}
  .pad{padding:66px 0}
  .photo-hero{min-height:440px}
  .photo-hero .wrap{padding:0 24px 52px}
  .photo-hero p.lead{margin-top:18px}
  .photo-hero .cta{margin-top:24px}
  .strengths .grid{grid-template-columns:1fr}
  .strengths .cell{border-left:0; border-top:1px solid var(--line-2)}
  .strengths .cell:first-child{border-top:0}
  .foot{flex-direction:column; gap:24px}
  .foot nav{flex-direction:column; gap:12px}
  nav.main.open .nav-cta{display:inline-flex; width:100%; justify-content:center; margin-top:8px; color:#fff}
}
@media (max-width:520px){ .flow{grid-template-columns:1fr} }
@media (prefers-reduced-motion:reduce){ html{scroll-behavior:auto} }