:root {
  color-scheme: dark;
  --bg: #07111f;
  --bg-elevated: #0d1b2d;
  --panel: rgba(17, 34, 55, 0.82);
  --panel-strong: #13263d;
  --text: #f4f8ff;
  --muted: #9eb0c7;
  --line: rgba(168, 201, 237, 0.16);
  --cyan: #47c8ff;
  --blue: #4a7dff;
  --mint: #4ee6b8;
  --warning: #ffca6b;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% -8%, rgba(71, 200, 255, 0.22), transparent 34rem),
    radial-gradient(circle at 94% 8%, rgba(74, 125, 255, 0.18), transparent 30rem),
    linear-gradient(180deg, #091625 0%, var(--bg) 55%, #050b14 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan); }
a:hover { color: #8bdfff; }

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem max(1.2rem, calc((100vw - 960px) / 2));
  background: rgba(7, 17, 31, 0.76);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  font-weight: 750;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.brand-mark {
  position: relative;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.8rem;
  background: linear-gradient(145deg, var(--cyan), var(--blue));
  box-shadow: 0 10px 28px rgba(71, 200, 255, 0.26);
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 0.55rem 0.75rem 0.7rem;
  border: 0.18rem solid white;
  border-radius: 50% 50% 55% 55%;
}

.brand-mark::after {
  content: "";
  position: absolute;
  left: 0.98rem;
  bottom: 0.34rem;
  width: 0.3rem;
  height: 0.5rem;
  background: white;
  clip-path: polygon(50% 100%, 0 0, 100% 0);
}

.nav-links { display: flex; gap: 1.1rem; }
.nav-links a { color: var(--muted); font-size: 0.9rem; text-decoration: none; }
.nav-links a:hover { color: var(--text); }

.wrap { width: min(960px, calc(100% - 2rem)); margin: 0 auto; }
.hero { padding: clamp(4.5rem, 11vw, 8rem) 0 3rem; text-align: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.8rem;
  color: #bdeaff;
  font-size: 0.82rem;
  border: 1px solid rgba(71, 200, 255, 0.25);
  border-radius: 999px;
  background: rgba(71, 200, 255, 0.08);
}
.eyebrow::before { content: ""; width: 0.45rem; height: 0.45rem; border-radius: 50%; background: var(--mint); box-shadow: 0 0 14px var(--mint); }
h1 { margin: 1.5rem 0 1rem; font-size: clamp(2.4rem, 8vw, 5.2rem); line-height: 1.06; letter-spacing: -0.055em; }
.gradient-text { background: linear-gradient(115deg, #ffffff 15%, #8bddff 60%, #6e93ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { max-width: 43rem; margin: 0 auto; color: var(--muted); font-size: clamp(1rem, 2.5vw, 1.18rem); }
.actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.65rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: rgba(255,255,255,0.04);
  text-decoration: none;
}
.button.primary { color: #04101d; font-weight: 750; background: linear-gradient(135deg, var(--cyan), #78ddff); border-color: transparent; }

.route-card {
  position: relative;
  min-height: 16rem;
  margin: 3rem auto 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 2rem;
  background:
    linear-gradient(rgba(71,200,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(71,200,255,0.06) 1px, transparent 1px),
    linear-gradient(145deg, #102641, #091625);
  background-size: 2rem 2rem, 2rem 2rem, auto;
  box-shadow: var(--shadow);
}
.route-line { position: absolute; inset: 12% 7%; width: 86%; height: 76%; }
.route-line path { fill: none; stroke: url(#routeGradient); stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; filter: drop-shadow(0 0 9px rgba(71,200,255,.65)); }
.route-status {
  position: absolute;
  left: 1.25rem;
  top: 1.25rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(5, 14, 26, 0.72);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  text-align: left;
}
.route-status strong { display: block; }
.route-status span { color: var(--muted); font-size: 0.84rem; }

.section { padding: 3.4rem 0; }
.section-head { max-width: 42rem; margin-bottom: 1.6rem; }
.section-label { color: var(--cyan); font-size: 0.78rem; font-weight: 750; letter-spacing: 0.14em; }
h2 { margin: 0.35rem 0 0.65rem; font-size: clamp(1.65rem, 4vw, 2.35rem); line-height: 1.25; letter-spacing: -0.025em; }
.section-head p, .muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.card, .content-card {
  border: 1px solid var(--line);
  border-radius: 1.35rem;
  background: linear-gradient(150deg, rgba(19,38,61,.88), rgba(10,24,41,.82));
  box-shadow: 0 16px 40px rgba(0,0,0,.18);
}
.card { padding: 1.35rem; }
.card-icon { display: grid; place-items: center; width: 2.8rem; height: 2.8rem; margin-bottom: 1rem; border-radius: 0.9rem; color: #07111f; font-weight: 800; background: linear-gradient(135deg, var(--cyan), var(--mint)); }
.card h3 { margin: 0 0 0.4rem; font-size: 1.02rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.content-card { padding: clamp(1.35rem, 4vw, 2.25rem); }
.content-card + .content-card { margin-top: 1rem; }
.content-card h2, .content-card h3 { margin-top: 0; }
.content-card h3 { margin-bottom: 0.35rem; font-size: 1.05rem; }
.content-card p, .content-card li { color: var(--muted); }
.content-card strong { color: var(--text); }
.content-card ul, .content-card ol { padding-left: 1.25rem; }
.content-card li + li { margin-top: 0.45rem; }
.faq details { padding: 1rem 0; border-top: 1px solid var(--line); }
.faq details:first-of-type { border-top: 0; }
.faq summary { cursor: pointer; color: var(--text); font-weight: 700; }
.faq details p { margin-bottom: 0; }
.notice { border-color: rgba(255, 202, 107, 0.3); background: rgba(255, 202, 107, 0.07); }
.contact-box { text-align: center; }
.contact-box .button { margin-top: 0.5rem; }
footer { margin-top: 3rem; padding: 2.2rem 0 3.5rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.84rem; text-align: center; }
footer .footer-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 1rem; margin-bottom: 0.8rem; }
footer a { color: var(--muted); text-decoration: none; }

@media (max-width: 760px) {
  .grid { grid-template-columns: 1fr; }
  .nav { align-items: flex-start; }
  .nav-links { gap: 0.7rem; font-size: 0.8rem; }
  .brand span:last-child { display: none; }
  .route-card { min-height: 13rem; border-radius: 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}