:root {
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: #f7fbff;
  background: #07101e;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: radial-gradient(circle at 85% 10%, #142b4c 0, transparent 37%), #07101e; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
img { display: block; max-width: 100%; }
:focus-visible { outline: 3px solid #45d4ff; outline-offset: 4px; }

.site-shell { width: min(1200px, calc(100% - 48px)); margin: 0 auto; }
.site-header { height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid rgba(173, 202, 235, .16); }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 1.22rem; font-weight: 760; letter-spacing: -.035em; }
.brand img { border-radius: 12px; }
.site-header nav { display: flex; align-items: center; gap: 30px; color: #bccde0; font-size: .94rem; }
.site-header nav a { text-decoration: none; transition: color .2s ease; }
.site-header nav a:hover { color: #fff; }

.hero { display: grid; grid-template-columns: minmax(0, .91fr) minmax(0, 1.09fr); align-items: center; gap: 32px; min-height: 600px; padding: 68px 0 74px; }
.eyebrow { margin: 0 0 18px; color: #60d7f4; font-size: .78rem; font-weight: 740; letter-spacing: .16em; }
.hero h1 { max-width: 670px; margin: 0; font-size: clamp(2.35rem, 3.8vw, 4rem); line-height: 1.19; letter-spacing: -.065em; }
.hero h1 span { color: #9feeff; }
.hero-lead { max-width: 550px; margin: 28px 0 0; color: #c3d1e3; font-size: 1.055rem; line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 32px; }
.button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 22px; border: 1px solid transparent; border-radius: 13px; text-align: center; text-decoration: none; font-size: .96rem; font-weight: 720; white-space: nowrap; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover:not(.is-pending) { transform: translateY(-2px); }
.button-primary { min-width: 205px; color: #061425; background: linear-gradient(120deg, #64e1ff, #66a6ff); box-shadow: 0 10px 28px rgba(20, 154, 232, .25); }
.button-primary:hover:not(.is-pending) { background: linear-gradient(120deg, #9ceaff, #8abaff); }
.button-primary.is-pending { color: #a9bdd2; border-color: rgba(173, 202, 235, .22); background: #24334b; box-shadow: none; cursor: not-allowed; }
.button-secondary { border-color: rgba(173, 202, 235, .28); color: #ecf6ff; background: rgba(23, 42, 66, .7); }
.button-secondary:hover { border-color: #6edafb; }
.download-status { min-height: 1.7em; margin: 13px 0 0; color: #a7bed3; font-size: .86rem; line-height: 1.6; }
.hero-visual { position: relative; min-width: 0; overflow: hidden; border: 1px solid rgba(160, 211, 255, .22); border-radius: 28px; background: #0d1c32; box-shadow: 0 28px 90px rgba(0, 0, 0, .25); }
.hero-visual img { width: 100%; height: auto; aspect-ratio: 1672 / 941; object-fit: cover; }
.visual-caption { position: absolute; bottom: 18px; left: 18px; display: inline-flex; align-items: center; gap: 9px; max-width: calc(100% - 36px); padding: 10px 13px; border: 1px solid rgba(205, 235, 255, .22); border-radius: 11px; color: #effaff; background: rgba(9, 20, 34, .8); backdrop-filter: blur(14px); font-size: .82rem; }
.caption-mark { width: 7px; height: 7px; flex: 0 0 auto; border-radius: 50%; background: #70e5e5; box-shadow: 0 0 12px #70e5e5; }

.paths { padding: 48px 0 80px; border-top: 1px solid rgba(173, 202, 235, .16); }
.section-heading .eyebrow { margin-bottom: 10px; }
h2 { margin: 0; font-size: clamp(1.55rem, 2.5vw, 2.3rem); line-height: 1.35; letter-spacing: -.035em; }
.path-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 28px; }
.path-card { display: flex; gap: 20px; min-height: 225px; padding: 27px; border: 1px solid rgba(173, 202, 235, .17); border-radius: 21px; background: linear-gradient(140deg, rgba(27, 45, 70, .9), rgba(14, 29, 49, .9)); }
.path-icon { flex: 0 0 46px; width: 46px; height: 46px; display: grid; place-items: center; border: 1px solid rgba(99, 218, 255, .33); border-radius: 13px; color: #7ee2fb; background: rgba(55, 164, 236, .09); font-size: .82rem; font-weight: 740; }
.path-card h3 { margin: 2px 0 11px; font-size: 1.18rem; letter-spacing: -.025em; }
.path-card p { margin: 0; color: #c0d0e2; font-size: .96rem; line-height: 1.78; }
.path-meta { display: inline-block; margin-top: 18px; color: #8fe0ee; font-size: .82rem; font-weight: 660; }

.download-panel { display: flex; align-items: center; justify-content: space-between; gap: 34px; margin-bottom: 90px; padding: 34px 38px; border: 1px solid rgba(99, 218, 255, .27); border-radius: 25px; background: linear-gradient(120deg, rgba(23, 55, 88, .94), rgba(16, 34, 60, .95)); }
.download-panel .eyebrow { margin-bottom: 10px; }
.download-panel p:not(.eyebrow) { max-width: 640px; margin: 14px 0 0; color: #c4d4e5; font-size: .98rem; line-height: 1.75; }
.download-panel .requirement { color: #9fb9d1 !important; font-size: .82rem !important; }
.download-panel .button { flex: 0 0 auto; }
.site-footer { display: flex; align-items: flex-start; justify-content: space-between; gap: 28px; padding: 26px 0 40px; border-top: 1px solid rgba(173, 202, 235, .16); color: #8fa7bd; font-size: .82rem; }
.site-footer span { color: #f2f9ff; font-weight: 720; }
.site-footer p { max-width: 510px; margin: 0; line-height: 1.65; text-align: right; }

@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; gap: 42px; min-height: 0; padding: 62px 0; }
  .hero-copy { max-width: 720px; }
  .hero-visual { width: min(100%, 760px); }
  .download-panel { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 620px) {
  .site-shell { width: min(100% - 32px, 1200px); }
  .site-header { height: 72px; }
  .brand { font-size: 1.1rem; }
  .brand img { width: 36px; height: 36px; }
  .site-header nav { gap: 16px; font-size: .84rem; }
  .hero { gap: 32px; padding: 48px 0 54px; }
  .hero h1 { font-size: clamp(2.4rem, 10vw, 3.4rem); }
  .hero-lead { margin-top: 22px; font-size: 1rem; line-height: 1.78; }
  .hero-actions { gap: 10px; margin-top: 26px; }
  .hero-actions .button { width: 100%; }
  .hero-visual { border-radius: 19px; }
  .visual-caption { bottom: 10px; left: 10px; max-width: calc(100% - 20px); font-size: .75rem; }
  .paths { padding: 42px 0 56px; }
  .path-grid { grid-template-columns: 1fr; gap: 12px; margin-top: 24px; }
  .path-card { min-height: 0; padding: 22px; }
  .download-panel { gap: 24px; margin-bottom: 55px; padding: 26px 23px; }
  .download-panel .button { width: 100%; }
  .site-footer { flex-direction: column; gap: 8px; padding-bottom: 30px; }
  .site-footer p { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button, .site-header nav a { transition: none; }
}