:root {
  --bg: #ffffff;
  --bg-dark: #0a0a0f;
  --bg-soft: #f7f8fb;
  --text: #0a0a0f;
  --text-muted: #5b606b;
  --text-inv: #ffffff;
  --accent: #6366f1;
  --accent-2: #22d3ee;
  --accent-3: #a855f7;
  --border: #e6e8ef;
  --radius: 14px;
  --max: 1120px;
  --font-jp: "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", sans-serif;
  --font-en: "Inter", var(--font-jp);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-jp);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Header ========== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  padding: 18px 0;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(1.2) blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 24px;
  letter-spacing: -0.02em;
}
.logo span { color: var(--accent); }

.nav {
  display: flex;
  align-items: center;
  gap: 36px;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 14px;
}
.nav a { transition: color .2s; }
.nav a:hover { color: var(--accent); }

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
  transition: transform .2s, box-shadow .2s, background .2s;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  color: var(--text-inv);
  box-shadow: 0 10px 30px -10px rgba(99,102,241,0.6);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px -10px rgba(99,102,241,0.7);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn--ghost:hover { border-color: var(--text); }
.btn--sm { padding: 10px 18px; font-size: 13px; }
.btn--lg { padding: 18px 36px; font-size: 15px; }

/* ========== Hero ========== */
.hero {
  position: relative;
  padding: 180px 0 120px;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(800px 400px at 10% 0%, rgba(99,102,241,0.12), transparent 60%),
    radial-gradient(800px 400px at 90% 10%, rgba(168,85,247,0.12), transparent 60%),
    radial-gradient(600px 400px at 50% 100%, rgba(34,211,238,0.10), transparent 60%);
  z-index: -1;
}
.hero__inner { position: relative; }

.hero__tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.7);
  color: var(--text-muted);
  margin-bottom: 28px;
}
.hero__title {
  font-size: clamp(44px, 7vw, 88px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
}
.gradient {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-3) 50%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero__lead {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 640px;
  margin-bottom: 40px;
}
.hero__cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 80px;
}
.hero__stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}
.hero__stats div {
  display: flex;
  flex-direction: column;
}
.hero__stats strong {
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
}
.hero__stats span {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ========== Sections ========== */
.section {
  padding: 120px 0;
}
.section--dark {
  background: var(--bg-dark);
  color: var(--text-inv);
}
.section--dark .section__label { color: var(--accent-2); }
.section--dark .section__title { color: var(--text-inv); }

.section__label {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.section__title {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 64px;
}

/* ========== About ========== */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.about__text {
  font-size: 16px;
  color: var(--text-muted);
}
.about__text strong { color: var(--text); }

/* ========== Services ========== */
.services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 40px 32px;
  transition: transform .3s, border-color .3s, background .3s;
}
.service:hover {
  transform: translateY(-6px);
  border-color: var(--accent-2);
  background: rgba(255,255,255,0.06);
}
.service__num {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-2);
  margin-bottom: 24px;
  letter-spacing: 0.1em;
}
.service__title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 16px;
}
.service__desc {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 24px;
}
.service__list {
  list-style: none;
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 20px;
}
.service__list li {
  font-size: 13px;
  padding: 8px 0;
  color: rgba(255,255,255,0.75);
  position: relative;
  padding-left: 20px;
}
.service__list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent-2);
}

/* ========== Features ========== */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature {
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-soft);
  transition: transform .3s, box-shadow .3s;
}
.feature:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -20px rgba(10,10,15,0.15);
}
.feature__icon {
  font-size: 22px;
  color: var(--accent);
  margin-bottom: 16px;
}
.feature h3 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 12px;
}
.feature p {
  font-size: 14px;
  color: var(--text-muted);
}

/* ========== Company Table ========== */
.company-table {
  width: 100%;
  max-width: 760px;
  border-collapse: collapse;
  font-size: 15px;
}
.company-table tr {
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.company-table th,
.company-table td {
  padding: 20px 16px;
  text-align: left;
  vertical-align: top;
}
.company-table th {
  width: 180px;
  font-weight: 700;
  color: var(--accent-2);
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.08em;
}

/* ========== CTA / Contact ========== */
.cta {
  padding: 120px 0;
  background:
    radial-gradient(600px 400px at 50% 0%, rgba(99,102,241,0.10), transparent 60%),
    radial-gradient(600px 400px at 50% 100%, rgba(168,85,247,0.10), transparent 60%),
    var(--bg-soft);
}
.cta__inner { text-align: center; }
.cta__title {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.cta__lead {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 56px;
}

/* ========== Contact Form (Google Forms embed) ========== */
.form-wrapper {
  max-width: 760px;
  margin: 0 auto;
  background: #fff;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 30px 60px -30px rgba(10,10,15,0.15);
}
.google-form {
  display: block;
  width: 100%;
  border: 0;
  border-radius: 8px;
}

/* ========== Footer ========== */
.footer {
  background: var(--bg-dark);
  color: var(--text-inv);
  padding: 60px 0 40px;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.footer__brand .logo { font-size: 22px; }
.footer__tag {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
}
.footer__copy {
  font-family: var(--font-en);
  font-size: 12px;
  color: rgba(255,255,255,0.45);
}

/* ========== Responsive ========== */
@media (max-width: 900px) {
  .nav { gap: 20px; }
  .nav a:not(.btn) { display: none; }
  .section { padding: 80px 0; }
  .hero { padding: 140px 0 80px; }
  .about__grid,
  .services,
  .features { grid-template-columns: 1fr; gap: 20px; }
  .hero__stats { gap: 28px; }
  .hero__stats strong { font-size: 24px; }
  .company-table th { width: 120px; font-size: 11px; }
  .company-table th, .company-table td { padding: 14px 8px; font-size: 13px; }
  .form-wrapper { padding: 8px; }
}