:root {
  color-scheme: light;
  --blue-950: #082b5c;
  --blue-800: #0b4ea2;
  --blue-650: #1768c4;
  --blue-100: #eaf3ff;
  --blue-050: #f5f9ff;
  --ink: #142033;
  --muted: #526279;
  --line: #d7e1ee;
  --surface: #ffffff;
  --page: #f7faff;
  --warning-bg: #fff7dc;
  --warning-line: #e3b341;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(8, 43, 92, 0.09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--page); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif; font-size: 1rem; line-height: 1.75; }
a { color: var(--blue-800); text-underline-offset: 0.2em; }
a:hover { color: var(--blue-650); }
code { padding: 0.12em 0.38em; border: 1px solid var(--line); border-radius: 0.35em; background: #f1f5fa; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em; }

.skip-link { position: fixed; z-index: 100; top: 0.5rem; left: 0.5rem; transform: translateY(-160%); padding: 0.7rem 1rem; color: white; background: var(--blue-950); border-radius: 0.5rem; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; z-index: 20; top: 0; border-bottom: 1px solid rgba(215, 225, 238, 0.9); background: rgba(255, 255, 255, 0.94); backdrop-filter: blur(14px); }
.header-inner, .footer-inner, .page-container { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.wordmark { color: var(--blue-950); font-size: 1.1rem; font-weight: 800; letter-spacing: -0.035em; text-decoration: none; white-space: nowrap; }
.wordmark span { color: var(--blue-650); }
.global-nav { display: flex; align-items: center; gap: 1.4rem; font-size: 0.92rem; font-weight: 650; }
.global-nav a { color: var(--muted); text-decoration: none; }
.global-nav a:hover, .global-nav a[aria-current="page"] { color: var(--blue-800); }

.page-hero { position: relative; overflow: hidden; padding: 6rem 0 4.5rem; color: white; background: linear-gradient(135deg, var(--blue-950), #0c58ae 68%, #2385d9); }
.page-hero::after { content: ""; position: absolute; width: 28rem; height: 28rem; right: -9rem; bottom: -20rem; border: 5rem solid rgba(255,255,255,0.08); border-radius: 50%; }
.reading-content { max-width: 780px; margin-left: max(24px, calc((100% - 1120px) / 2)); }
.eyebrow, .section-kicker { margin: 0 0 0.55rem; color: #a9d2ff; font-size: 0.78rem; font-weight: 800; letter-spacing: 0.15em; text-transform: uppercase; }
.page-hero h1 { max-width: 780px; margin: 0; font-size: clamp(2.35rem, 6vw, 4.65rem); line-height: 1.07; letter-spacing: -0.045em; }
.lead { max-width: 700px; margin: 1.6rem 0 0; color: #e0eeff; font-size: clamp(1.05rem, 2.2vw, 1.32rem); line-height: 1.8; }
.page-body { padding-block: 4.5rem 6.5rem; }

.intro-grid, .check-grid, .path-grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.intro-grid, .product-card, .path-grid a, .download-summary, .content-section, .action-panel, .split-section { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.intro-grid { gap: 2rem; padding: 1.6rem; }
.feature-card h2 { margin: 0 0 0.35rem; font-size: 1.15rem; }
.feature-card p, .product-card p, .content-section p, .action-panel p, .split-section p { margin: 0; color: var(--muted); }
.price-note { margin: -1rem 0 2rem; color: var(--muted); font-size: 0.85rem; }
.price-note a { color: var(--blue-700); }
.product-section, .content-section, .split-section, .action-panel, .download-summary, section[aria-labelledby="functions-heading"] { margin-top: 3.5rem; }
.section-heading { margin-bottom: 1.25rem; }
.section-heading .section-kicker, .content-section .section-kicker, .split-section .section-kicker, .download-summary .section-kicker { color: var(--blue-650); }
.section-heading h2, .content-section h2, .split-section h2, .download-summary h2, .action-panel h2 { margin: 0; color: var(--blue-950); font-size: clamp(1.55rem, 3vw, 2.1rem); line-height: 1.3; letter-spacing: -0.025em; }
.product-card, .action-panel { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 2rem; }
.product-card h3 { margin: 0.3rem 0 0.65rem; color: var(--blue-950); font-size: 1.55rem; }
.product-meta { color: var(--blue-650) !important; font-size: 0.82rem; font-weight: 750; }
.button-group { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0.72rem 1.15rem; border: 1px solid var(--blue-800); border-radius: 0.7rem; font-weight: 750; text-decoration: none; white-space: nowrap; }
.button-primary { color: white; background: var(--blue-800); }
.button-primary:hover { color: white; background: var(--blue-650); }
.button-secondary { color: var(--blue-800); background: white; }
.button-disabled { color: #738096; border-color: #c9d2df; background: #edf1f6; cursor: not-allowed; }
.notice { display: grid; gap: 0.15rem; margin-bottom: 2rem; padding: 1rem 1.2rem; border: 1px solid; border-radius: 0.8rem; }
.notice span { color: var(--muted); }
.notice-info { border-color: #9fc5ef; background: var(--blue-100); }
.notice-pending { border-color: var(--warning-line); background: var(--warning-bg); }
.split-section, .download-summary { display: grid; gap: 3rem; grid-template-columns: 1.2fr 1fr; padding: 2rem; }
.fact-list, .release-facts { margin: 0; }
.fact-list div, .release-facts div { display: flex; justify-content: space-between; gap: 1rem; padding: 0.7rem 0; border-bottom: 1px solid var(--line); }
.fact-list dt, .release-facts dt { color: var(--muted); }
.fact-list dd, .release-facts dd { margin: 0; font-weight: 750; text-align: right; }
.download-package { max-width: 960px; }
.package-facts { margin-top: 1.25rem; }
.package-facts dd { min-width: 0; overflow-wrap: anywhere; }
.download-actions { margin-top: 1.5rem; }
.server-guide { margin-top: 2rem; }
.check-grid { margin: 0; padding: 1.4rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); list-style: none; }
.check-grid li { position: relative; padding: 0.22rem 0.5rem 0.22rem 2rem; }
.check-grid li::before { content: "✓"; position: absolute; left: 1rem; color: var(--blue-650); font-weight: 900; }
.content-section { max-width: 880px; padding: 2rem; }
.content-section[id] { scroll-margin-top: 5.5rem; }
.content-section > * + * { margin-top: 1rem; }
.license-warranty { max-width: none; }
.license-summary-notice { margin-top: 3.5rem; }
.text-link { display: inline-block; margin-top: 1rem; font-weight: 750; }
.path-grid { margin-bottom: 3.5rem; }
.path-grid a { padding: 1.35rem; text-decoration: none; }
.path-grid span { display: block; margin-bottom: 0.2rem; color: var(--muted); font-size: 0.8rem; }
.path-grid strong { color: var(--blue-950); }
.steps { margin: 1.5rem 0 0; padding: 0; list-style: none; }
.steps li { display: grid; grid-template-columns: 2.3rem 1fr; gap: 1rem; padding: 1.25rem 0; border-top: 1px solid var(--line); }
.steps li > span { display: grid; width: 2.2rem; height: 2.2rem; place-items: center; color: white; background: var(--blue-800); border-radius: 50%; font-weight: 800; }
.steps h3 { margin: 0; color: var(--blue-950); font-size: 1.05rem; }
.steps p { margin: 0.25rem 0 0; }
.install-guide { max-width: 960px; }
.install-prerequisites { margin-top: 1.5rem; padding: 1.2rem 1.35rem; border-left: 4px solid var(--blue-650); background: var(--blue-050); }
.install-prerequisites h3 { margin: 0; color: var(--blue-950); font-size: 1.1rem; }
.detailed-steps li { padding-block: 1.65rem; }
.detailed-steps li > div > * + * { margin-top: 0.75rem; }
.step-note { padding-left: 0.9rem; border-left: 3px solid var(--line); font-size: 0.93rem; }
.install-image-heading { margin-bottom: 0; color: var(--blue-950); font-size: 0.98rem; }
.install-image-grid { display: grid; gap: 1rem; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.install-image-grid-single { width: calc(50% - 0.5rem); grid-template-columns: 1fr; }
.install-image { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 0.8rem; background: var(--blue-050); }
.install-image img { display: block; width: 100%; height: auto; }
.install-image figcaption { padding: 0.75rem 0.9rem; color: var(--muted); font-size: 0.88rem; line-height: 1.6; }
.inline-notice { margin: 1rem 0 0; }
.folder-tree { overflow-x: auto; margin: 1rem 0; padding: 1rem 1.2rem; border: 1px solid var(--line); border-radius: 0.7rem; background: #f1f5fa; line-height: 1.55; }
.folder-tree code { padding: 0; border: 0; background: transparent; }
.check-list { display: grid; gap: 0.65rem; margin: 1.3rem 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 1.8rem; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--blue-650); font-weight: 900; }
.trouble-list { margin: 1.3rem 0 0; }
.trouble-list div { padding: 1rem 0; border-top: 1px solid var(--line); }
.trouble-list dt { color: var(--blue-950); font-weight: 750; }
.trouble-list dd { margin: 0.35rem 0 0; color: var(--muted); }
.plain-list { padding-left: 1.2rem; }
.plain-list li + li { margin-top: 0.45rem; }

.site-footer { padding: 3rem 0; color: #dbeaff; background: var(--blue-950); }
.footer-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 2rem; }
.footer-wordmark { margin: 0; color: white; }
.footer-inner p { margin: 0.45rem 0 0; }
.footer-inner .trademark-note { max-width: 38rem; color: #b7cbea; font-size: 0.78rem; }
.footer-inner nav { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.footer-inner nav a { color: #dbeaff; }

@media (max-width: 780px) {
  .header-inner, .footer-inner, .page-container { width: min(100% - 32px, 1120px); }
  .site-header { position: static; }
  .content-section[id] { scroll-margin-top: 1rem; }
  .header-inner { padding-block: 1rem; align-items: flex-start; flex-direction: column; gap: 0.7rem; }
  .global-nav { width: 100%; gap: 0.5rem 1rem; flex-wrap: wrap; font-size: 0.87rem; }
  .page-hero { padding: 4.3rem 0 3.5rem; }
  .reading-content { margin-inline: auto; }
  .page-body { padding-block: 3rem 4.5rem; }
  .intro-grid, .check-grid, .path-grid, .split-section, .download-summary, .install-image-grid { grid-template-columns: 1fr; }
  .install-image-grid-single { width: 100%; }
  .product-card, .action-panel, .footer-inner { align-items: stretch; flex-direction: column; }
  .product-card .button { width: 100%; }
  .split-section, .download-summary, .content-section, .product-card, .action-panel { padding: 1.35rem; }
  .demo-credentials div { display: block; }
  .demo-credentials dd { margin-top: 0.2rem; text-align: left; }
  .demo-credentials a { white-space: nowrap; }
}

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