/* ======== Base (cyber tech palette) ======== */
:root{
  --bg:#0B1020;
  --panel:#0F172A;
  --text:#E2E8F0;
  --muted:#94A3B8;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.05);
  --accent:#38BDF8;
  --accent2:#8B5CF6;
  --shadow:0 0 60px -15px rgba(56,189,248,.35);
  --radius:24px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Meiryo", Arial, sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
}

img{max-width:100%; display:block}
a{color:inherit; text-decoration:none}
.container{width:min(1120px, 92%); margin-inline:auto}

/* ======== Buttons ======== */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:.5rem;
  padding:.8rem 1.05rem;
  border-radius:14px;
  border:1px solid transparent;
  font-weight:700;
  letter-spacing:.02em;
  transition:transform .12s ease, filter .12s ease, background .12s ease, border-color .12s ease;
  user-select:none;
}
.btn:active{transform:translateY(1px)}
.btn--pill{border-radius:999px}
.btn--primary{
  background:var(--accent);
  color:#0B1020;
  box-shadow: var(--shadow);
}
.btn--primary:hover{filter:brightness(1.06)}
.btn--ghost{
  background:transparent;
  border-color: rgba(56,189,248,.65);
  color: rgba(56,189,248,.95);
}
.btn--ghost:hover{background:rgba(255,255,255,.04)}
.btn-ico{font-weight:900}

/* ======== Header ======== */
.site-header{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(12px);
  background: rgba(11,16,32,.72);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 0;
  gap:14px;
}
.brand{display:flex; align-items:center; gap:12px; min-width:0}
.brand-mark{
  width:38px; height:38px;
  display:grid; place-items:center;
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:0 0 40px -10px rgba(56,189,248,.60);
  color:var(--accent);
  flex:0 0 auto;
}
.brand-mark__svg{width:22px; height:22px}
.brand-text{display:flex; flex-direction:column; min-width:0}
.brand-name{font-weight:800; letter-spacing:.04em; font-size:14px}
.brand-sub{font-size:11px; color:var(--muted)}
.nav{display:none; gap:20px; font-size:13px; color: rgba(226,232,240,.85)}
.nav a:hover{color:#fff}
.header-cta{display:none}

/* hamburger */
.hamburger{
  width:42px; height:42px;
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--glass);
  display:inline-flex; align-items:center; justify-content:center;
  gap:6px;
}
.hamburger span{
  width:18px; height:2px; background:rgba(226,232,240,.85);
  display:block;
}
.hamburger span:nth-child(2){width:14px}

/* mobile menu */
.mobile-menu{
  border-top:1px solid var(--line);
  background: rgba(11,16,32,.92);
}
.mobile-menu__inner{
  padding:14px 0 18px;
  display:grid;
  gap:10px;
}
.mobile-menu__inner a{padding:10px 0; color: rgba(226,232,240,.9)}
.mobile-menu__inner a:hover{color:#fff}

/* ======== Hero ======== */
.hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute; inset:0;
  opacity:.34;
  background:
    radial-gradient(800px 500px at 30% 20%, rgba(56,189,248,.35), transparent 60%),
    radial-gradient(700px 450px at 80% 10%, rgba(139,92,246,.18), transparent 55%),
    linear-gradient(90deg, rgba(56,189,248,.22), rgba(139,92,246,.10));
  filter:saturate(1.05);
}
.hero-inner{
  position:relative;
  padding:64px 0 72px;
  display:grid;
  gap:24px;
  align-items:center;
}
.badges{display:flex; gap:8px; flex-wrap:wrap; margin-bottom:12px}
.badge{
  font-size:11px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid rgba(56,189,248,.30);
  background:rgba(255,255,255,.06);
  color: rgba(56,189,248,.95);
}
.hero-title{
  margin:0;
  font-size:clamp(26px, 4.3vw, 48px);
  line-height:1.15;
  font-weight:900;
  letter-spacing:-.02em;
}
.hero-sub{
  display:block;
  margin-top:10px;
  font-size:clamp(15px, 2.2vw, 22px);
  color: rgba(226,232,240,.86);
  font-weight:800;
}
.accent{color: rgba(56,189,248,.95)}
.hero-desc{
  margin:14px 0 0;
  color: rgba(148,163,184,.95);
  max-width: 56ch;
}
.hero-cta{margin-top:18px; display:flex; gap:10px; flex-wrap:wrap}

.hero-card{position:relative}
.hero-card__frame{
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(255,255,255,.05);
  padding:12px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}
.hero-card__frame img{border-radius: calc(var(--radius) - 10px)}
.hero-glow{
  position:absolute; inset:10%;
  border-radius:999px;
  filter: blur(40px);
  opacity:.35;
  background: rgba(56,189,248,.20);
  z-index:-1;
}

/* ======== Sections ======== */
.section{
  padding:72px 0;
  border-bottom:1px solid var(--line);
}
.section--panel{background:var(--panel)}
.section--contact{
  background: linear-gradient(to bottom, var(--bg), var(--bg));
}
.section-title{ text-align:center }
.section-title--left{text-align:left}
.section-title h2{
  margin:0;
  font-size: clamp(20px, 2.8vw, 30px);
  font-weight:900;
  letter-spacing:-.02em;
  color:#fff;
}
.section-title p{
  margin:10px auto 0;
  max-width: 110ch;
  color: rgba(148,163,184,.95);
  font-size: 14px;
}
.section-title--left p{margin-left:0}

.grid{display:grid; gap:16px; margin-top:22px}
.grid--3{grid-template-columns: 1fr}
.grid--4{grid-template-columns: 1fr}
.two-col{display:grid; gap:18px; align-items:center}
.center{text-align:center}

/* cards */
.card, .infocard, .formcard, .glass{
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(255,255,255,.05);
  backdrop-filter: blur(10px);
}
.card{overflow:hidden}
.card-img{height:160px; width:100%; object-fit:cover; opacity:.92}
.card-body{padding:18px}
.card-body h3{margin:0 0 8px; font-size:18px; font-weight:800; color:#fff}
.card-body p{margin:0; color: rgba(148,163,184,.95); font-size:14px}

.glass{padding:18px; box-shadow: var(--shadow)}
.pre{white-space:pre-line; margin:0; color: rgba(226,232,240,.85); font-size:14px}

.list{list-style:none; padding:0; margin:0; display:grid; gap:6px; color: rgba(226,232,240,.85); font-size:14px}
.check{color: rgba(56,189,248,.95); font-weight:900; margin-right:8px}

.infocard{padding:18px}
.infocard-head{display:flex; gap:10px; align-items:flex-start; margin-bottom:10px}
.infocard h3{margin:0; font-size:16px; font-weight:900; color:#fff}
.infocard p{margin:0; color: rgba(148,163,184,.95); font-size:14px}
.ico{
  width:34px; height:34px; border-radius:12px;
  background: rgba(255,255,255,.06);
  border:1px solid var(--line);
  display:grid; place-items:center;
  color: rgba(56,189,248,.95);
}
.muted{color: rgba(148,163,184,.95); font-size:12px; margin:6px 0 0}

.philosophy{font-size:18px; color: rgba(226,232,240,.85); margin:0}
.philosophy-strong{color:#fff; font-weight:900}

.dl{
  margin:0;
  display:grid;
  grid-template-columns: 120px 1fr;
  gap:10px 14px;
  font-size:14px;
  color: rgba(226,232,240,.85);
}
.dl dt{font-weight:900; color: rgba(226,232,240,.95)}
.dl dd{margin:0; color: rgba(148,163,184,.98)}

.formcard{padding:18px; box-shadow: var(--shadow)}
.formcard h3{margin:0 0 14px; font-size:18px; font-weight:900; color:#fff}
.form{display:grid; gap:12px}
.form label{display:grid; gap:6px}
.form label span{font-size:12px; color: rgba(148,163,184,.98)}
input, textarea{
  width:100%;
  padding:12px 14px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.15);
  background: transparent;
  color: var(--text);
  outline:none;
}
input::placeholder, textarea::placeholder{color: rgba(148,163,184,.55)}
textarea{min-height:120px; resize:vertical}
.fineprint{margin:8px 0 0; font-size:12px; color: rgba(148,163,184,.70)}

.footer{
  padding:18px 0;
  border-top:1px solid var(--line);
  border-bottom:none;
}
.footer-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap:12px;
  font-size:12px;
  color: rgba(148,163,184,.95);
}
.to-top{
  padding:8px 10px;
  border-radius:12px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
}
.to-top:hover{background: rgba(255,255,255,.06)}

/* ======== Reveal animation ======== */
.reveal{
  opacity:0;
  transform: translateY(14px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.is-visible{
  opacity:1;
  transform: translateY(0);
}
.reveal[data-reveal-delay="60"]{transition-delay: .06s}
.reveal[data-reveal-delay="80"]{transition-delay: .08s}
.reveal[data-reveal-delay="120"]{transition-delay: .12s}
.reveal[data-reveal-delay="160"]{transition-delay: .16s}
.reveal[data-reveal-delay="180"]{transition-delay: .18s}

/* ======== Responsive ======== */
@media (min-width: 860px){
  .nav{display:flex}
  .header-cta{display:inline-flex}
  .hamburger{display:none}
  .hero-inner{grid-template-columns: 1.15fr .85fr; gap:32px; padding:86px 0 96px}
  .grid--3{grid-template-columns: repeat(3, 1fr)}
  .grid--4{grid-template-columns: repeat(4, 1fr)}
  .two-col{grid-template-columns: 1fr 1fr; gap:28px}
  .section-title{ text-align:left }
  .section-title p{margin-left:0}
}

/* お問い合わせ（メール） */
.contact-mail {
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.05);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

.contact-mail h3 {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 900;
  color: #fff;
}

.contact-mail-text {
  margin: 0 0 18px;
  font-size: 14px;
  color: rgba(226,232,240,.85);
}

.contact-mail-btn {
  display: inline-flex;
}

@media (min-width: 860px){
  .contact-mail {
    padding: 32px;
  }
}