/* ====== Reset & Base ====== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Noto Sans JP","Inter",system-ui,-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  color:#1a1230;
  background:#fafafa;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"palt";
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:opacity .2s ease,color .2s ease}
a:hover{opacity:.75}
button{font:inherit;cursor:pointer;border:none;background:none}

:root{
  --c-ink:#1a1230;
  --c-ink-soft:#453760;
  --c-primary:#2c1e4a;
  --c-primary-2:#5a3a96;
  --c-accent:#8b5cf6;
  --c-bg:#fafafa;
  --c-bg-alt:#f3f0f9;
  --c-border:#e7e2f2;
  --c-white:#ffffff;
  --radius:14px;
  --radius-lg:24px;
  --shadow:0 10px 30px rgba(44,30,74,.08);
  --shadow-lg:0 20px 60px rgba(44,30,74,.15);
  --max:1160px;
  --narrow:720px;
}

/* ====== Header ====== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 32px;
  background:rgba(255,255,255,0);
  backdrop-filter:blur(0);
  -webkit-backdrop-filter:blur(0);
  transition:background .3s ease,backdrop-filter .3s ease,box-shadow .3s ease,padding .3s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(18px) saturate(1.3);
  -webkit-backdrop-filter:blur(18px) saturate(1.3);
  box-shadow:0 4px 20px rgba(44,30,74,.06);
  padding:10px 32px;
}
.brand{display:inline-flex;align-items:center}
.brand-logo{height:34px;width:auto}
.nav{display:flex;gap:28px;align-items:center}
.nav a{
  font-weight:600;font-size:14px;letter-spacing:.08em;
  color:var(--c-ink);position:relative;padding:6px 2px;
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;
  width:100%;height:2px;background:var(--c-primary-2);
  transform:scaleX(0);transform-origin:right;
  transition:transform .35s cubic-bezier(.2,.8,.2,1);
}
.nav a:hover{opacity:1}
.nav a:hover::after{transform:scaleX(1);transform-origin:left}

.nav-toggle{display:none;width:40px;height:40px;position:relative}
.nav-toggle span{
  position:absolute;left:10px;right:10px;height:2px;background:var(--c-ink);
  transition:transform .3s ease,opacity .2s ease,top .3s ease;
}
.nav-toggle span:nth-child(1){top:13px}
.nav-toggle span:nth-child(2){top:19px}
.nav-toggle span:nth-child(3){top:25px}
.nav-toggle.is-open span:nth-child(1){top:19px;transform:rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){top:19px;transform:rotate(-45deg)}

/* ====== Hero ====== */
.hero{
  position:relative;min-height:100vh;min-height:100svh;
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;padding:120px 24px 80px;text-align:center;
}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(1000px 600px at 15% 10%,rgba(139,92,246,.22),transparent 60%),
    radial-gradient(900px 700px at 85% 90%,rgba(90,58,150,.25),transparent 60%),
    radial-gradient(600px 500px at 50% 50%,rgba(44,30,74,.08),transparent 70%),
    linear-gradient(180deg,#fafafa 0%,#f3ecff 100%);
}
.hero-bg::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(44,30,74,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(44,30,74,.04) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse at center,black 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at center,black 30%,transparent 75%);
}
.hero-inner{position:relative;z-index:1;max-width:820px}
.hero-logo{
  width:min(520px,78vw);margin:0 auto 36px;
  filter:drop-shadow(0 8px 30px rgba(44,30,74,.15));
  animation:logoIn 1s cubic-bezier(.2,.8,.2,1) both;
}
.hero-tagline{
  font-size:clamp(26px,5.2vw,56px);
  font-weight:900;letter-spacing:.02em;line-height:1.3;
  color:var(--c-primary);margin-bottom:22px;
}
.hero-tagline span{display:inline-block;animation:fadeUp .9s cubic-bezier(.2,.8,.2,1) both}
.hero-tagline span:nth-child(1){animation-delay:.25s}
.hero-tagline span:nth-child(2){animation-delay:.45s;
  background:linear-gradient(135deg,#5a3a96,#8b5cf6);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  font-size:clamp(14px,1.6vw,16px);color:var(--c-ink-soft);
  line-height:2;margin-bottom:40px;animation:fadeUp 1s cubic-bezier(.2,.8,.2,1) .65s both;
}
.hero-cta{
  display:flex;gap:14px;justify-content:center;flex-wrap:wrap;
  animation:fadeUp 1s cubic-bezier(.2,.8,.2,1) .85s both;
}

/* ====== Buttons ====== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:15px 32px;border-radius:999px;font-weight:700;font-size:14px;
  letter-spacing:.05em;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
  min-width:180px;
}
.btn:hover{opacity:1;transform:translateY(-2px)}
.btn-primary{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  color:#fff;box-shadow:0 10px 24px rgba(90,58,150,.3);
}
.btn-primary:hover{box-shadow:0 14px 30px rgba(90,58,150,.4)}
.btn-ghost{
  background:rgba(255,255,255,.7);color:var(--c-primary);
  border:1.5px solid var(--c-primary);backdrop-filter:blur(4px);
}
.btn-ghost:hover{background:var(--c-primary);color:#fff}

.scroll-indicator{
  position:absolute;left:50%;bottom:30px;transform:translateX(-50%);
  width:28px;height:44px;border:2px solid var(--c-primary);
  border-radius:14px;z-index:1;
}
.scroll-indicator span{
  display:block;width:3px;height:8px;background:var(--c-primary);
  border-radius:2px;margin:6px auto 0;
  animation:scrollDot 1.6s ease-in-out infinite;
}

/* ====== Sections ====== */
.section{padding:120px 24px;position:relative}
.section-service{background:var(--c-white)}
.section-company{background:linear-gradient(180deg,var(--c-bg) 0%,var(--c-bg-alt) 100%)}
.section-recruit{background:var(--c-white)}
.section-contact{background:linear-gradient(180deg,var(--c-bg-alt) 0%,#e9e1fb 100%)}
.container{max-width:var(--max);margin:0 auto}
.container-narrow{max-width:var(--narrow);margin:0 auto}

.section-title{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  margin-bottom:64px;text-align:center;
}
.section-title .en{
  font-family:"Inter",sans-serif;font-size:clamp(36px,5vw,56px);
  font-weight:800;letter-spacing:.02em;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1.1;
}
.section-title .ja{
  font-size:13px;font-weight:600;letter-spacing:.3em;color:var(--c-ink-soft);
  padding-left:.3em;
}

/* ====== Service ====== */
.section-lead{
  text-align:center;max-width:720px;margin:-28px auto 72px;
  font-size:clamp(14px,1.6vw,17px);color:var(--c-ink-soft);line-height:2;
}
.section-lead strong{color:var(--c-primary-2);font-weight:700}

.service-tag{
  display:inline-block;font-family:"Inter",sans-serif;
  font-size:11px;font-weight:700;letter-spacing:.2em;
  padding:5px 12px;border-radius:999px;
  background:rgba(90,58,150,.1);color:var(--c-primary-2);
  margin-bottom:18px;text-transform:uppercase;
}
.service-tag-gold{background:rgba(166,120,40,.12);color:#8a6223}

.service-feature{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:48px;box-shadow:var(--shadow);margin-bottom:48px;
  transition:transform .35s ease,box-shadow .35s ease;
}
.service-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.service-feature-reverse{direction:rtl}
.service-feature-reverse > *{direction:ltr}
.service-feature-visual{overflow:hidden;border-radius:var(--radius);aspect-ratio:16/10;background:#f5f1fb}
.service-feature-visual a{display:block;width:100%;height:100%}
.service-feature-visual img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.service-feature-visual a:hover img{transform:scale(1.04)}
.service-feature-title{
  font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--c-primary);
  line-height:1.45;margin-bottom:18px;
}
.service-feature-name{
  display:inline-block;margin-top:4px;font-family:"Inter",sans-serif;
  font-size:clamp(22px,2.8vw,30px);letter-spacing:.02em;font-weight:800;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.service-feature-desc{
  font-size:15px;color:var(--c-ink-soft);line-height:1.95;margin-bottom:24px;
}
.service-feature-desc strong{color:var(--c-primary);font-weight:700}
.service-feature-stats{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;
  background:linear-gradient(135deg,#faf7ff,#f3ecff);
  padding:20px 16px;border-radius:var(--radius);margin-bottom:22px;
}
.stat{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px}
.stat-num{
  font-family:"Inter",sans-serif;font-size:clamp(26px,3.2vw,34px);
  font-weight:800;color:var(--c-primary);line-height:1;letter-spacing:-.02em;
}
.stat-unit{font-size:.5em;font-weight:700;margin-left:2px;color:var(--c-primary-2)}
.stat-label{font-size:11px;color:var(--c-ink-soft);font-weight:600;letter-spacing:.04em}
.service-feature-points{
  list-style:none;padding:0;margin:0 0 26px;
}
.service-feature-points li{
  padding:8px 0 8px 26px;position:relative;font-size:14px;color:var(--c-ink-soft);
  border-bottom:1px dashed var(--c-border);
}
.service-feature-points li:last-child{border-bottom:none}
.service-feature-points li::before{
  content:"";position:absolute;left:0;top:16px;
  width:14px;height:2px;background:var(--c-primary-2);
}
.point-num{
  font-weight:700;color:var(--c-primary);background:rgba(90,58,150,.08);
  padding:2px 8px;border-radius:4px;font-size:13px;
}
.btn-compact{
  min-width:auto;padding:12px 24px;font-size:13px;align-self:flex-start;
}

.sub-services-title{
  text-align:center;font-size:clamp(18px,2vw,22px);font-weight:700;
  color:var(--c-primary);margin:72px 0 32px;letter-spacing:.06em;
}
.sub-services-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:28px;
}
.sub-service-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .35s ease,box-shadow .35s ease;
  display:flex;flex-direction:column;
}
.sub-service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.sub-service-visual{aspect-ratio:16/9;overflow:hidden;background:#1a1230}
.sub-service-visual img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.sub-service-card:hover .sub-service-visual img{transform:scale(1.04)}
.sub-service-body{padding:28px 30px 32px}
.sub-service-body h4{
  font-size:19px;font-weight:700;color:var(--c-primary);
  margin-bottom:12px;line-height:1.5;
}
.sub-service-body p{font-size:14px;color:var(--c-ink-soft);line-height:1.9}

/* ====== Company ====== */
.company-list{
  max-width:780px;margin:0 auto;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);overflow:hidden;
}
.company-row{
  display:grid;grid-template-columns:180px 1fr;
  border-bottom:1px solid var(--c-border);
}
.company-row:last-child{border-bottom:none}
.company-row dt{
  padding:22px 28px;font-weight:700;color:var(--c-primary);
  background:linear-gradient(180deg,#faf7ff,#f5efff);font-size:14px;
  display:flex;align-items:center;letter-spacing:.05em;
}
.company-row dd{padding:22px 28px;color:var(--c-ink);font-size:15px;line-height:1.85}

/* ====== Recruit ====== */
.recruit-message{
  max-width:640px;margin:0 auto;text-align:center;
  background:#fff;border-radius:var(--radius-lg);border:1px solid var(--c-border);
  box-shadow:var(--shadow);padding:56px 36px;color:var(--c-ink-soft);
}
.recruit-message p{margin-bottom:10px;font-size:15px}
.recruit-message p:last-child{margin-bottom:0}

/* ====== Contact ====== */
.contact-form{
  background:#fff;padding:48px 44px;border-radius:var(--radius-lg);
  border:1px solid var(--c-border);box-shadow:var(--shadow);
}
.form-row{margin-bottom:22px}
.form-row label{
  display:block;font-weight:700;font-size:14px;color:var(--c-primary);
  margin-bottom:8px;letter-spacing:.04em;
}
.req{
  display:inline-block;background:var(--c-primary-2);color:#fff;
  font-size:10px;font-weight:700;padding:2px 8px;border-radius:999px;
  margin-left:6px;letter-spacing:.1em;vertical-align:middle;
}
.form-row input,.form-row textarea{
  width:100%;padding:14px 16px;font-family:inherit;font-size:15px;
  color:var(--c-ink);background:#fafafa;
  border:1.5px solid var(--c-border);border-radius:10px;
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.form-row input:focus,.form-row textarea:focus{
  outline:none;border-color:var(--c-primary-2);background:#fff;
  box-shadow:0 0 0 4px rgba(90,58,150,.12);
}
.form-row textarea{resize:vertical;min-height:160px}
.form-row-honeypot{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-submit{text-align:center;margin-top:12px}
.btn-submit{min-width:240px}
.btn-submit:disabled{opacity:.5;cursor:not-allowed;transform:none}
.form-note{font-size:12px;color:var(--c-ink-soft);margin-top:14px}
.form-status{margin-top:16px;padding:12px 16px;border-radius:10px;font-size:14px;text-align:center;display:none}
.form-status.is-visible{display:block}
.form-status.is-success{background:#e9f9ee;color:#166b2d;border:1px solid #b7e4c7}
.form-status.is-error{background:#fdecec;color:#a02929;border:1px solid #f5c2c2}

/* ====== Footer ====== */
.site-footer{
  background:var(--c-primary);color:#d9ceef;padding:50px 24px;text-align:center;
}
.footer-inner{max-width:var(--max);margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:18px}
.footer-logo{height:36px;width:auto;filter:brightness(0) invert(1) opacity(.9)}
.footer-copy{font-size:12px;letter-spacing:.08em;opacity:.8}

/* ====== Animations ====== */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@keyframes logoIn{from{opacity:0;transform:translateY(-16px) scale(.96)}to{opacity:1;transform:none}}
@keyframes scrollDot{0%,100%{transform:translateY(0);opacity:1}50%{transform:translateY(14px);opacity:.2}}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .9s cubic-bezier(.2,.8,.2,1),transform .9s cubic-bezier(.2,.8,.2,1)}
.reveal.is-visible{opacity:1;transform:none}

/* ====== Responsive ====== */
.pc-only{display:inline}
@media (max-width:820px){
  .site-header{padding:12px 18px}
  .nav{
    position:fixed;top:0;right:0;bottom:0;width:min(280px,70vw);
    flex-direction:column;align-items:flex-start;gap:0;
    background:#fff;padding:96px 32px 32px;box-shadow:-10px 0 40px rgba(44,30,74,.12);
    transform:translateX(100%);transition:transform .35s cubic-bezier(.2,.8,.2,1);
  }
  .nav a{width:100%;padding:16px 0;border-bottom:1px solid var(--c-border);font-size:16px}
  .nav a::after{display:none}
  .nav.is-open{transform:translateX(0)}
  .nav-toggle{display:block;z-index:110}
  .pc-only{display:none}
  .hero{padding:100px 20px 80px}
  .section{padding:80px 20px}
  .section-title{margin-bottom:44px}
  .section-lead{margin:-16px auto 44px}
  .service-feature{
    grid-template-columns:1fr;gap:24px;padding:24px;margin-bottom:28px;
  }
  .service-feature-reverse{direction:ltr}
  .service-feature-stats{padding:14px 10px;gap:8px}
  .sub-services-title{margin:52px 0 24px}
  .sub-services-grid{grid-template-columns:1fr;gap:20px}
  .sub-service-body{padding:22px 22px 26px}
  .company-row{grid-template-columns:110px 1fr}
  .company-row dt{padding:16px 14px;font-size:13px}
  .company-row dd{padding:16px 16px;font-size:14px}
  .contact-form{padding:30px 22px}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
  .btn{min-width:0;width:auto}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}