:root {
  --ink: #111827;
  --ink-2: #263447;
  --muted: #64748b;
  --line: #d9e4ee;
  --paper: #f5f8fb;
  --white: #ffffff;
  --navy: #12324a;
  --blue: #0f5f9f;
  --cyan: #00a6c8;
  --green: #16a36a;
  --amber: #f59e0b;
  --red: #d84f45;
  --shadow: 0 24px 70px rgba(17, 24, 39, 0.13);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'IBM Plex Sans JP', 'Noto Sans JP', sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.demo-ribbon {
  background: #101820;
  color: #dceaf7;
  text-align: center;
  padding: 10px 16px;
  font-size: 13px;
}
.demo-ribbon a { color: #8bdfff; font-weight: 700; text-decoration: none; border-bottom: 1px solid #8bdfff; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(184,200,216,.75);
}
.nav {
  max-width: 1180px;
  height: 76px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: max-content;
}
.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: #fff;
  display: grid;
  place-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 15px; }
.brand-text span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: .15em;
  color: var(--muted);
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  gap: 20px;
  list-style: none;
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 700;
}
.nav-links a { text-decoration: none; }
.nav-links a:hover,
.nav-links a.is-current { color: var(--blue); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
}
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 16px 34px rgba(15,95,159,.22); }
.btn-ghost { background: #fff; color: var(--blue); border-color: #b8c8d8; }
.btn-dark { background: #132b3e; color: #fff; }
.arrow { font-family: 'JetBrains Mono', monospace; font-size: 13px; }
.hero {
  color: #fff;
  background:
    linear-gradient(115deg, rgba(15,39,58,.96), rgba(18,50,74,.86)),
    url('https://images.unsplash.com/photo-1556761175-4b46a572b786?auto=format&fit=crop&w=1800&q=82');
  background-size: cover;
  background-position: center;
}
.hero-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 86px 24px 96px;
  display: grid;
  grid-template-columns: minmax(0, .86fr) minmax(340px, 1.14fr);
  gap: 52px;
  align-items: center;
}
.eyebrow,
.label {
  font-family: 'JetBrains Mono', monospace;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.hero h1 {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(36px, 5vw, 62px);
  line-height: 1.18;
  margin: 18px 0 22px;
  font-weight: 900;
}
.hero p { color: #d8e9f4; max-width: 680px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
.hero-card {
  background: rgba(255,255,255,.96);
  color: var(--ink);
  border-radius: 16px;
  padding: 26px;
  box-shadow: 0 30px 90px rgba(0,0,0,.26);
}
.hero-card h2 { font-size: 22px; margin-bottom: 14px; }
.hero-card ul { list-style: none; display: grid; gap: 10px; }
.hero-card li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #f8fbfd;
  font-size: 13px;
}
.hero-card li::before {
  content: "";
  width: 10px;
  height: 10px;
  margin: 8px auto 0;
  border-radius: 50%;
  background: var(--cyan);
}
.section { max-width: 1180px; margin: 0 auto; padding: 92px 24px; }
.section-head {
  display: grid;
  grid-template-columns: minmax(0,.9fr) minmax(0,1.1fr);
  gap: 54px;
  align-items: end;
  margin-bottom: 42px;
}
h2 {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.28;
  margin-top: 10px;
}
.lead { color: var(--ink-2); font-size: 15.5px; line-height: 2; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 26px;
  box-shadow: 0 14px 36px rgba(17,24,39,.06);
}
.card h3 { font-size: 21px; line-height: 1.45; margin-bottom: 10px; }
.card p { color: var(--ink-2); font-size: 14px; line-height: 1.9; }
.tag-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.tag {
  display: inline-flex;
  border-radius: 999px;
  padding: 5px 10px;
  background: #eaf5fb;
  color: #0b5c82;
  font-size: 11px;
  font-weight: 700;
}
.tag.green { background: #e7f7ef; color: #0f7a4c; }
.tag.amber { background: #fff5dc; color: #996100; }
.tag.red { background: #fff0ee; color: #b73d34; }
.feature-list { list-style: none; display: grid; gap: 10px; margin-top: 18px; }
.feature-list li {
  position: relative;
  padding: 12px 12px 12px 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbfd;
  font-size: 13px;
  font-weight: 700;
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 50%;
  width: 8px;
  height: 8px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: var(--cyan);
}
.band { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.process article { background: #fff; padding: 24px 18px; min-height: 180px; }
.process .step { font-family: 'JetBrains Mono', monospace; color: var(--blue); font-size: 13px; font-weight: 700; margin-bottom: 24px; }
.table { background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.row { display: grid; grid-template-columns: 190px 1fr; border-bottom: 1px solid var(--line); }
.row:last-child { border-bottom: none; }
.row dt { background: #f2f7fb; color: var(--blue); font-weight: 700; padding: 17px 20px; }
.row dd { padding: 17px 20px; color: var(--ink-2); }
.cta {
  background: linear-gradient(115deg, rgba(15,95,159,.94), rgba(0,166,200,.82));
  color: #fff;
}
.cta-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 78px 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
}
.cta h2 { color: #fff; margin-bottom: 12px; }
.cta p { color: #e6f8ff; max-width: 720px; }
.footer { background: #101820; color: #c7d5df; padding: 32px 24px; }
.footer-inner { max-width: 1180px; margin: 0 auto; display: flex; justify-content: space-between; gap: 18px; font-size: 12px; }
@media (max-width: 980px) {
  .nav { height: auto; min-height: 76px; align-items: flex-start; flex-direction: column; padding: 16px 24px; }
  .nav-links { flex-wrap: wrap; }
  .hero-inner, .section-head, .cta-inner { grid-template-columns: 1fr; }
  .grid-3, .process { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 680px) {
  .nav, .hero-inner, .section, .cta-inner { padding-left: 16px; padding-right: 16px; }
  .brand-text span { display: none; }
  .hero-inner { grid-template-columns: 1fr; padding-top: 56px; }
  .grid-2, .grid-3, .process, .row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
}