/* ============================================================
   株式会社コレット 公式サイト  style.css
   ============================================================ */
:root{
  --navy:#050f77;
  --navy-d:#03093f;
  --accent:#0d7fd0;
  --ink:#16181d;
  --muted:#5b6470;
  --line:#e6e8ef;
  --soft:#f5f6fa;
  --white:#fff;
  --maxw:1120px;
  --radius:16px;
  --shadow:0 18px 50px -20px rgba(5,15,119,.28);
  --font-en:'Rubik',system-ui,sans-serif;
  --font-jp:'Noto Sans JP','Rubik',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:76px;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-jp);
  color:var(--ink);
  line-height:1.85;
  background:var(--white);
  font-size:16px;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.en{font-family:var(--font-en);letter-spacing:.04em}

/* layout helpers */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:clamp(64px,9vw,120px) 0}
.section--soft{background:var(--soft)}
.lead{color:var(--muted);font-size:clamp(15px,1.6vw,17px);max-width:760px}

/* section heading */
.sec-head{margin-bottom:clamp(36px,5vw,60px)}
.sec-head .kicker{
  display:inline-block;font-family:var(--font-en);font-weight:600;
  font-size:13px;letter-spacing:.18em;color:var(--accent);text-transform:uppercase;
  margin-bottom:14px;
}
.sec-head h2{
  font-size:clamp(26px,4vw,40px);font-weight:700;line-height:1.3;letter-spacing:.02em;
}
.sec-head h2 small{display:block;font-family:var(--font-en);font-weight:500;
  font-size:.42em;letter-spacing:.14em;color:var(--muted);margin-top:8px;text-transform:uppercase}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;width:100%;z-index:100;
  background:rgba(255,255,255,.86);backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:.3s;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px -18px rgba(0,0,0,.4)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-en);font-weight:700}
.brand img{height:30px;width:auto}
.nav-links{display:flex;align-items:center;gap:30px;list-style:none}
.nav-links a{font-size:14px;font-weight:500;color:var(--ink);position:relative;padding:4px 0;transition:.2s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--navy);transition:.25s}
.nav-links a:hover{color:var(--navy)}
.nav-links a:hover::after{width:100%}
.nav-cta{background:var(--navy);color:#fff!important;padding:9px 20px;border-radius:999px;font-size:13px}
.nav-cta::after{display:none}
.nav-cta:hover{background:var(--navy-d)}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.hamburger span{width:24px;height:2px;background:var(--ink);transition:.3s}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:100svh;display:flex;align-items:center;
  color:#fff;overflow:hidden;
}
.hero__bg{position:absolute;inset:0;z-index:-2}
.hero__bg img{width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(120deg,rgba(3,9,63,.86) 0%,rgba(5,15,119,.66) 45%,rgba(5,15,119,.25) 100%)}
.hero__inner{padding:120px 0 90px}
.hero .tagline-en{font-family:var(--font-en);font-weight:600;letter-spacing:.06em;
  font-size:clamp(13px,1.6vw,15px);opacity:.9;margin-bottom:22px}
.hero h1{font-weight:700;font-size:clamp(30px,6vw,62px);line-height:1.28;letter-spacing:.02em;
  text-shadow:0 4px 30px rgba(0,0,0,.25)}
.hero h1 b{color:#9ec5ff;font-weight:700}
.hero p{margin-top:26px;max-width:560px;font-size:clamp(15px,1.8vw,18px);opacity:.94;line-height:1.95}
.hero__actions{margin-top:38px;display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;
  padding:14px 30px;border-radius:999px;transition:.25s;cursor:pointer;border:0}
.btn--primary{background:#fff;color:var(--navy)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px -12px rgba(0,0,0,.5)}
.btn--ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn--ghost:hover{background:rgba(255,255,255,.22)}
.hero__pillars{position:absolute;bottom:0;left:0;width:100%;z-index:1;
  display:grid;grid-template-columns:repeat(3,1fr);
  background:rgba(3,9,63,.55);border-top:1px solid rgba(255,255,255,.15);backdrop-filter:blur(6px)}
.hero__pillars div{padding:20px 24px;text-align:center;border-right:1px solid rgba(255,255,255,.12)}
.hero__pillars div:last-child{border-right:0}
.hero__pillars b{display:block;font-family:var(--font-en);font-size:13px;letter-spacing:.1em;color:#9ec5ff}
.hero__pillars span{font-size:14px;font-weight:500}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:clamp(32px,5vw,64px);align-items:center}
.about-photo{position:relative}
.about-photo img{width:100%;border-radius:var(--radius);box-shadow:var(--shadow)}
.about-photo .cap{position:absolute;left:18px;bottom:18px;background:var(--navy);color:#fff;
  padding:10px 18px;border-radius:10px;font-size:14px}
.about-photo .cap b{font-size:17px;display:block;letter-spacing:.04em}
.about-body h3{font-size:clamp(20px,2.4vw,26px);margin-bottom:18px;line-height:1.5}
.about-body p+p{margin-top:14px}
.about-body .muted{color:var(--muted);font-size:15px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.tags span{background:var(--soft);border:1px solid var(--line);color:var(--muted);
  font-size:13px;padding:6px 14px;border-radius:999px}

/* company table */
.company-table{margin-top:30px;border-top:1px solid var(--line)}
.company-table dl{display:flex;gap:20px;padding:14px 4px;border-bottom:1px solid var(--line);font-size:15px}
.company-table dt{flex:0 0 120px;font-weight:600;color:var(--navy)}
.company-table dd{color:var(--ink)}

/* ---------- services ---------- */
.svc{display:grid;gap:clamp(48px,7vw,90px)}
.svc--after{margin-top:clamp(48px,7vw,90px)}
.svc-item{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,60px);align-items:center}
.svc-item:nth-child(even) .svc-media{order:2}
.svc-media{position:relative}
.svc-media img{width:100%;height:100%;max-height:440px;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}
.svc-no{font-family:var(--font-en);font-weight:700;font-size:14px;letter-spacing:.1em;color:var(--accent)}
.svc-body h3{font-size:clamp(22px,3vw,30px);margin:8px 0 16px;line-height:1.4}
.svc-body p{color:var(--muted);font-size:15.5px}
.svc-body .note{margin-top:14px;font-size:13.5px;color:var(--muted);
  background:var(--soft);border-left:3px solid var(--navy);padding:10px 14px;border-radius:0 8px 8px 0}
.svc-links{margin-top:20px;display:flex;flex-wrap:wrap;gap:12px}
.svc-links a{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--navy)}
.svc-links a:hover{color:var(--accent)}
.svc-links a::after{content:"→";transition:.2s}
.svc-links a:hover::after{transform:translateX(4px)}

/* AI case cards */
.cases{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:30px}
.case{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;transition:.25s}
.case:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.case .num{font-family:var(--font-en);font-weight:700;color:#fff;background:var(--navy);
  width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:14px;margin-bottom:14px}
.case h4{font-size:16px;margin-bottom:8px;line-height:1.5}
.case p{font-size:13.5px;color:var(--muted);line-height:1.8}

/* app chips */
.app-block{margin-top:34px;background:linear-gradient(135deg,var(--navy),var(--navy-d));
  color:#fff;border-radius:var(--radius);padding:clamp(26px,4vw,40px)}
.app-block h4{font-size:clamp(18px,2.4vw,22px);margin-bottom:6px}
.app-block p{color:rgba(255,255,255,.8);font-size:14.5px;margin-bottom:20px}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips span{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  padding:8px 15px;border-radius:999px;font-size:13.5px}
.app-result{margin-top:22px;display:inline-flex;align-items:center;gap:10px;
  background:#fff;color:var(--navy);font-weight:700;padding:12px 22px;border-radius:12px;font-size:15px}

/* data integration row */
.data-row{margin-top:18px;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.data-row .lbl{font-size:14px;color:var(--muted)}
.data-row b{background:var(--soft);border:1px solid var(--line);padding:6px 13px;border-radius:8px;
  font-family:var(--font-en);font-size:13px;font-weight:600;color:var(--ink)}

/* ---------- recruit ---------- */
.recruit{position:relative;color:#fff;overflow:hidden}
.recruit__bg{position:absolute;inset:0;z-index:-2}
.recruit__bg img{width:100%;height:100%;object-fit:cover}
.recruit::after{content:"";position:absolute;inset:0;z-index:-1;background:rgba(3,9,63,.82)}
.recruit .lead{color:rgba(255,255,255,.9)}
.recruit-card{margin-top:30px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);
  border-radius:var(--radius);padding:clamp(24px,4vw,38px);max-width:720px}
.recruit-card dl{display:flex;gap:18px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.16);font-size:15px}
.recruit-card dl:last-child{border-bottom:0}
.recruit-card dt{flex:0 0 110px;font-weight:600;color:#9ec5ff}
.recruit-card dd{flex:1}
.recruit-card a{color:#9ec5ff;text-decoration:underline;text-underline-offset:3px}
.recruit-card .sub{display:inline-block;margin-top:4px;font-size:13px;color:rgba(255,255,255,.65);line-height:1.75}
.job-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:9px}
.job-tags span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  padding:7px 15px;border-radius:999px;font-size:13.5px;font-weight:500}
.recruit-note{margin-top:30px;max-width:720px}
.recruit-note h3{font-size:19px;margin-bottom:12px}
.recruit-note p{color:rgba(255,255,255,.82);font-size:14.5px;margin-bottom:14px}
.recruit-note p:last-child{margin-bottom:0}
@media (max-width:640px){
  .recruit-card dl{flex-direction:column;gap:4px}
  .recruit-card dt{flex:none}
}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:clamp(32px,5vw,60px)}
.contact-info h3{font-size:22px;margin-bottom:16px}
.contact-info p{color:var(--muted);font-size:15px}
.contact-info .info-list{margin-top:24px;display:grid;gap:16px}
.contact-info .info-list div{display:flex;gap:14px;align-items:flex-start;font-size:15px}
.contact-info .info-list b{flex:0 0 70px;color:var(--navy)}
form .field{margin-bottom:18px}
form label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
form label .req{color:#d23;font-size:12px;margin-left:6px}
form input,form textarea{width:100%;border:1px solid var(--line);border-radius:10px;
  padding:13px 15px;font-size:15px;font-family:inherit;background:#fff;transition:.2s}
form input:focus,form textarea:focus{outline:0;border-color:var(--navy);box-shadow:0 0 0 3px rgba(5,15,119,.12)}
form textarea{min-height:140px;resize:vertical}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted)}
.check input{width:auto;margin-top:4px}
.check a{color:var(--navy);text-decoration:underline}
form .btn--primary{background:var(--navy);color:#fff;width:100%;justify-content:center;margin-top:8px}
form .btn--primary:hover{background:var(--navy-d)}
.form-note{font-size:12.5px;color:var(--muted);margin-top:12px;text-align:center}

/* ---------- footer ---------- */
.site-footer{background:var(--navy-d);color:rgba(255,255,255,.75);padding:50px 0 30px}
.footer-top{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
.footer-brand img{height:34px;margin-bottom:14px}
.footer-brand p{font-size:13.5px;max-width:320px;line-height:1.8}
.footer-nav{display:flex;gap:26px;flex-wrap:wrap}
.footer-nav a{font-size:14px;color:rgba(255,255,255,.8)}
.footer-nav a:hover{color:#fff}
.copy{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-family:var(--font-en);font-size:12.5px;letter-spacing:.04em;text-align:center}

/* ---------- reveal animation ---------- */
/* JS有効時のみ初期非表示にする（JS無効/失敗でも内容は必ず表示される） */
.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none}}

/* ---------- responsive ---------- */
@media(max-width:860px){
  .nav-links{position:fixed;inset:64px 0 auto 0;flex-direction:column;background:#fff;
    padding:24px;gap:6px;border-bottom:1px solid var(--line);transform:translateY(-120%);
    transition:.35s;box-shadow:0 20px 40px -20px rgba(0,0,0,.4)}
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:12px 0;width:100%;font-size:16px}
  .hamburger{display:flex}
  .about-grid,.svc-item,.contact-grid{grid-template-columns:1fr!important}
  .svc-item:nth-child(even) .svc-media{order:0}
  .svc-media img{max-height:300px}
  .cases{grid-template-columns:1fr}
  .hero__pillars{position:static;grid-template-columns:1fr;background:var(--navy)}
  .hero__pillars div{border-right:0;border-bottom:1px solid rgba(255,255,255,.12);text-align:left}
  .hero{min-height:auto}
  .hero__inner{padding:120px 0 40px}
}