:root {
  --navy: #10233f;
  --navy-2: #0b182b;
  --teal: #2a827a;
  --teal-light: #65b7b0;
  --gold: #c29b52;
  --ink: #172033;
  --muted: #647084;
  --line: #dce4ea;
  --paper: #ffffff;
  --soft: #f4f7f8;
  --soft-teal: #edf7f6;
  --soft-gold: #fbf7ef;
  --shadow: 0 24px 70px rgba(16, 35, 63, 0.13);
  --radius: 22px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, Arial, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.skip-link {
  position: fixed;
  z-index: 9999;
  left: 12px;
  top: -80px;
  padding: 10px 14px;
  color: #fff;
  background: var(--navy);
  border-radius: 8px;
  transition: top .2s ease;
}
.skip-link:focus { top: 12px; }

.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.narrow { width: min(calc(100% - 40px), 860px); margin: 0 auto; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--teal);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--gold); }
.section-title {
  max-width: 900px;
  margin: 0 0 22px;
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3.55rem);
  line-height: 1.16;
  letter-spacing: -.04em;
}
.section-lead { max-width: 820px; margin: 0 0 42px; color: var(--muted); font-size: 1.1rem; }
section { padding: 100px 0; }

.site-header {
  position: sticky;
  z-index: 1000;
  top: 0;
  border-bottom: 1px solid rgba(220, 228, 234, .78);
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(18px);
}
.header-inner {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; text-decoration: none; }
.brand img { display: block; width: 250px; height: auto; }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a { color: var(--navy); font-size: .92rem; font-weight: 700; text-decoration: none; }
.nav a:hover { color: var(--teal); }
.lang-link {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
}
.menu-toggle { display: none; border: 0; background: transparent; color: var(--navy); font-size: 1.6rem; }

.hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 80px;
  background:
    radial-gradient(circle at 85% 8%, rgba(42,130,122,.18), transparent 34%),
    radial-gradient(circle at 8% 88%, rgba(194,155,82,.12), transparent 29%),
    linear-gradient(180deg, #fbfdfd 0%, #fff 62%);
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: .33;
  background-image:
    linear-gradient(rgba(16,35,63,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,35,63,.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 86%);
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.03fr .97fr; align-items: center; gap: 58px; }
.hero-copy h1 {
  margin: 0 0 24px;
  color: var(--navy);
  font-size: clamp(2.75rem, 6vw, 5.6rem);
  line-height: 1.03;
  letter-spacing: -.065em;
}
.hero-copy h1 span { color: var(--teal); }
.hero-kicker { margin: 0 0 12px; color: var(--gold); font-size: .88rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.hero-copy .lead { max-width: 700px; margin: 0 0 30px; color: #4e5a6d; font-size: 1.18rem; }
.hero-copy .lead strong { color: var(--navy); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: var(--navy); box-shadow: 0 14px 28px rgba(16,35,63,.18); }
.btn-primary:hover { background: #18375f; }
.btn-secondary { color: var(--navy); border-color: var(--line); background: rgba(255,255,255,.78); }
.hero-proof { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.pill { padding: 7px 11px; color: var(--navy); border: 1px solid #d6e6e4; border-radius: 999px; background: rgba(237,247,246,.78); font-size: .78rem; font-weight: 800; }

.hero-media { position: relative; }
.video-frame {
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 26px;
  background: var(--navy-2);
  box-shadow: var(--shadow);
}
.video-frame video { display: block; width: 100%; aspect-ratio: 16/9; background: #071321; }
.video-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  color: #dce9ee;
  background: #0c1a2d;
  font-size: .77rem;
}
.video-label strong { color: #fff; }
.orbit {
  position: absolute;
  z-index: -1;
  right: -36px;
  bottom: -36px;
  width: 160px;
  height: 160px;
  border: 1px solid rgba(42,130,122,.3);
  border-radius: 50%;
}
.orbit::before, .orbit::after { position: absolute; content: ""; border-radius: 50%; }
.orbit::before { inset: 28px; border: 1px solid rgba(194,155,82,.32); }
.orbit::after { inset: 61px; background: var(--teal); }

.trust-strip { padding: 22px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--soft); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.trust-item { padding: 12px; text-align: center; }
.trust-item strong { display: block; color: var(--navy); font-size: 1rem; }
.trust-item span { color: var(--muted); font-size: .82rem; }

.cards-3, .cards-2, .feature-grid, .principle-grid, .usecase-grid { display: grid; gap: 20px; }
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.cards-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 30px rgba(16,35,63,.055);
}
.card h3 { margin: 0 0 10px; color: var(--navy); font-size: 1.28rem; }
.card p { margin: 0; color: var(--muted); }
.card-number { display: inline-grid; width: 42px; height: 42px; margin-bottom: 18px; place-items: center; color: #fff; border-radius: 14px; background: var(--teal); font-weight: 900; }

.problem { background: var(--navy); }
.problem .section-title, .problem .section-lead { color: #fff; }
.problem .section-lead { color: #c6d1df; }
.problem .card { border-color: rgba(255,255,255,.12); background: rgba(255,255,255,.06); box-shadow: none; }
.problem .card h3 { color: #fff; }
.problem .card p { color: #c6d1df; }
.problem .card-number { color: var(--navy); background: var(--gold); }

.quote-section { padding: 72px 0; background: var(--soft-teal); }
.big-quote { margin: 0; color: var(--navy); font-size: clamp(2rem, 4.4vw, 4rem); font-weight: 850; line-height: 1.2; letter-spacing: -.045em; }
.big-quote span { color: var(--teal); }
.quote-note { margin: 18px 0 0; color: var(--muted); }

.origin-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 54px; align-items: start; }
.sticky-panel { position: sticky; top: 118px; padding: 32px; border-radius: var(--radius); background: var(--navy); color: #fff; }
.sticky-panel h3 { margin: 0 0 14px; font-size: 1.8rem; line-height: 1.3; }
.sticky-panel p { margin: 0; color: #cdd8e4; }
.timeline { position: relative; padding-left: 32px; }
.timeline::before { position: absolute; top: 8px; bottom: 8px; left: 8px; width: 2px; content: ""; background: linear-gradient(var(--teal), var(--gold)); }
.timeline-item { position: relative; padding: 0 0 34px 24px; }
.timeline-item::before { position: absolute; top: 7px; left: -31px; width: 16px; height: 16px; content: ""; border: 4px solid #fff; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 1px var(--teal); }
.timeline-item:nth-child(even)::before { background: var(--gold); box-shadow: 0 0 0 1px var(--gold); }
.timeline-item h3 { margin: 0 0 7px; color: var(--navy); }
.timeline-item p { margin: 0; color: var(--muted); }

.feature-grid { grid-template-columns: repeat(3, 1fr); }
.feature-card {
  position: relative;
  overflow: hidden;
  min-height: 260px;
  padding: 28px;
  border-radius: var(--radius);
  background: var(--soft);
}
.feature-card::after { position: absolute; right: -36px; bottom: -54px; width: 150px; height: 150px; content: ""; border-radius: 50%; background: rgba(42,130,122,.09); }
.feature-card h3 { margin: 0 0 10px; color: var(--navy); }
.feature-card p { margin: 0; color: var(--muted); }
.feature-icon { display: grid; width: 52px; height: 52px; margin-bottom: 20px; place-items: center; color: #fff; border-radius: 16px; background: var(--navy); font-size: 1.4rem; }

.demo { background: var(--soft); }
.demo-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 34px; align-items: start; }
.demo-steps { display: grid; gap: 12px; }
.demo-step { display: grid; grid-template-columns: 40px 1fr; gap: 14px; align-items: start; padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.demo-step strong { display: grid; width: 34px; height: 34px; place-items: center; color: #fff; border-radius: 50%; background: var(--teal); font-size: .84rem; }
.demo-step h4 { margin: 0 0 3px; color: var(--navy); }
.demo-step p { margin: 0; color: var(--muted); font-size: .91rem; }
.transparency { margin-top: 26px; padding: 20px; border-left: 4px solid var(--gold); border-radius: 0 14px 14px 0; background: var(--soft-gold); color: #5c4a2c; }

.screenshot-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 28px; }
.screenshot { overflow: hidden; cursor: zoom-in; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: 0 10px 28px rgba(16,35,63,.08); }
.screenshot img { display: block; width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform .35s ease; }
.screenshot:hover img { transform: scale(1.025); }
.screenshot figcaption { padding: 12px 14px; color: var(--muted); font-size: .82rem; }

.principle-grid { grid-template-columns: repeat(4, 1fr); }
.principle { padding: 24px; border-top: 3px solid var(--teal); background: #fff; box-shadow: 0 12px 30px rgba(16,35,63,.06); }
.principle:nth-child(even) { border-top-color: var(--gold); }
.principle h3 { margin: 0 0 10px; color: var(--navy); font-size: 1.08rem; }
.principle p { margin: 0; color: var(--muted); font-size: .92rem; }

.usecases { background: var(--navy); }
.usecases .section-title, .usecases .section-lead { color: #fff; }
.usecases .section-lead { color: #c6d1df; }
.usecase-grid { grid-template-columns: repeat(3, 1fr); }
.usecase { min-height: 250px; padding: 28px; border: 1px solid rgba(255,255,255,.13); border-radius: var(--radius); background: rgba(255,255,255,.06); }
.usecase .tag { display: inline-block; margin-bottom: 22px; padding: 6px 10px; color: var(--navy); border-radius: 999px; background: var(--gold); font-size: .72rem; font-weight: 900; }
.usecase h3 { margin: 0 0 10px; color: #fff; }
.usecase p { margin: 0; color: #c6d1df; }

.founder-layout { display: grid; grid-template-columns: .65fr 1.35fr; gap: 38px; align-items: stretch; }
.founder-card { display: flex; flex-direction: column; justify-content: space-between; padding: 34px; color: #fff; border-radius: var(--radius); background: linear-gradient(150deg, var(--navy), #183c5f); }
.founder-card .initial { display: grid; width: 88px; height: 88px; margin-bottom: 30px; place-items: center; border: 1px solid rgba(255,255,255,.22); border-radius: 50%; background: rgba(255,255,255,.08); font-size: 2rem; font-weight: 900; }
.founder-card h3 { margin: 0; font-size: 1.7rem; }
.founder-card p { color: #cdd8e4; }
.founder-story { padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); }
.founder-story h3 { margin-top: 0; color: var(--navy); font-size: 1.65rem; }
.founder-story p { color: var(--muted); }
.founder-story strong { color: var(--navy); }

.cta { padding: 90px 0; }
.cta-box { position: relative; overflow: hidden; padding: 54px; color: #fff; border-radius: 30px; background: var(--navy); }
.cta-box::before { position: absolute; right: -100px; top: -140px; width: 360px; height: 360px; content: ""; border: 1px solid rgba(101,183,176,.3); border-radius: 50%; }
.cta-box h2 { position: relative; max-width: 780px; margin: 0 0 16px; font-size: clamp(2rem, 4.5vw, 3.8rem); line-height: 1.15; letter-spacing: -.04em; }
.cta-box p { position: relative; max-width: 760px; color: #cdd8e4; }
.cta-box .btn { position: relative; margin-top: 12px; color: var(--navy); background: #fff; }
.contact-note { margin-top: 12px; color: #b9c6d5; font-size: .82rem; }

.site-footer { padding: 48px 0; border-top: 1px solid var(--line); background: var(--soft); }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: end; }
.footer-brand img { display: block; width: 250px; height: auto; }
.footer-brand p { max-width: 550px; color: var(--muted); font-size: .9rem; }
.footer-meta { color: var(--muted); text-align: right; font-size: .86rem; line-height: 1.7; }
.footer-meta strong { color: var(--navy); font-size: .95rem; }

.lightbox { position: fixed; z-index: 2500; inset: 0; display: none; align-items: center; justify-content: center; padding: 24px; background: rgba(5,14,25,.88); }
.lightbox.open { display: flex; }
.lightbox img { max-width: min(1200px, 96vw); max-height: 90vh; border-radius: 14px; box-shadow: 0 20px 80px rgba(0,0,0,.45); }
.lightbox button { position: fixed; top: 18px; right: 24px; width: 44px; height: 44px; color: #fff; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; background: rgba(0,0,0,.25); font-size: 1.5rem; cursor: pointer; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .hero-grid, .origin-layout, .demo-layout, .founder-layout { grid-template-columns: 1fr; }
  .hero-copy { max-width: 820px; }
  .hero-media { max-width: 760px; }
  .sticky-panel { position: static; }
  .feature-grid, .cards-3, .usecase-grid { grid-template-columns: repeat(2, 1fr); }
  .principle-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  section { padding: 76px 0; }
  .container, .narrow { width: min(calc(100% - 28px), var(--max)); }
  .site-header { backdrop-filter: blur(12px); }
  .header-inner { min-height: 66px; }
  .brand img { width: min(210px, 62vw); }
  .menu-toggle { display: block; }
  .nav { position: absolute; top: 66px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 12px 20px 22px; border-bottom: 1px solid var(--line); background: #fff; }
  .nav.open { display: flex; }
  .nav a { padding: 10px 4px; }
  .lang-link { display: inline-flex; width: fit-content; margin-top: 5px; }
  .hero { padding-top: 64px; }
  .hero-grid { gap: 38px; }
  .hero-copy h1 { font-size: clamp(2.6rem, 14vw, 4.3rem); }
  .cards-3, .cards-2, .feature-grid, .principle-grid, .usecase-grid, .screenshot-grid { grid-template-columns: 1fr; }
  .cta-box { padding: 34px 26px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand img { width: min(250px, 72vw); }
  .footer-meta { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}