:root {
  color-scheme: dark;
  --background: #020617;
  --surface: #0f172a;
  --line: #253249;
  --text: #e2e8f0;
  --muted: #a4b2c7;
  --accent: #67e8f9;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 7rem; }
body { margin: 0; background: var(--background); color: var(--text); font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Noto Sans JP", sans-serif; font-size: 16px; line-height: 1.85; overflow-wrap: anywhere; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 4px; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { color: #f8fafc; font-weight: 800; line-height: 1.5; }
h1 { margin-top: 1rem; font-size: clamp(2rem, 4.3vw, 3.6rem); letter-spacing: -.045em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); letter-spacing: -.035em; }
h3 { font-size: 1.15rem; }
p + p { margin-top: 1rem; }
.container { width: min(1152px, 100% - 48px); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 1rem; z-index: 20; padding: .7rem 1rem; background: var(--accent); color: var(--background); font-weight: 700; }
.skip-link:focus { top: 1rem; }
.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid var(--line); background: rgba(2, 6, 23, .96); }
.header-inner { display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; min-height: 88px; }
.brand { display: inline-flex; align-items: center; gap: .85rem; flex-shrink: 0; }
.brand img { width: 48px; height: 48px; border-radius: 15px; padding: 4px; background: #ffffff08; border: 1px solid #ffffff12; }
.brand-name { display: block; color: white; font-size: 1.4rem; font-weight: 800; letter-spacing: -.03em; line-height: 1.35; }
.brand-name span { color: #22d3ee; }
.brand-caption { display: block; margin-top: 4px; font-size: .7rem; color: var(--muted); }
.header-nav { display: flex; align-items: center; gap: 1.5rem; font-size: .85rem; font-weight: 600; }
.header-nav [aria-current="page"] { color: var(--accent); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .75rem; min-height: 52px; padding: .8rem 1.6rem; border: 1px solid #22d3ee; border-radius: 999px; background: #06b6d4; color: #020617; font-weight: 800; line-height: 1.6; text-align: center; transition: background .15s, border-color .15s; }
.button:hover { background: #22d3ee; color: #020617; }
.button-secondary { background: transparent; border-color: #475569; color: var(--text); }
.button-secondary:hover { background: #0f172a; color: var(--accent); border-color: var(--accent); }
.header-nav .button { min-height: 44px; padding: .65rem 1.25rem; }
.breadcrumbs { padding-top: 1.6rem; color: var(--muted); font-size: .78rem; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: .6rem; margin: 0; padding: 0; list-style: none; }
.breadcrumbs li + li::before { content: "/"; margin-right: .6rem; color: #64748b; }
.breadcrumbs [aria-current="page"] { color: #cbd5e1; }
.hero { position: relative; overflow: hidden; padding: 3.5rem 0 4.5rem; background: radial-gradient(ellipse at 85% 20%, #0891b212, transparent 55%); }
.hero-grid { display: grid; grid-template-columns: 1.2fr 1fr; align-items: center; gap: 3.5rem; }
.eyebrow { margin-bottom: .8rem; color: var(--accent); font-size: .78rem; font-weight: 700; letter-spacing: .16em; }
.accent { color: var(--accent); }
.lead { margin-top: 1.5rem; color: #cbd5e1; font-size: 1.05rem; }
.muted { color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 2rem; }
.hero-note { margin-top: 1rem; color: var(--muted); font-size: .8rem; }
.tags { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.6rem 0 0; padding: 0; list-style: none; }
.tags li { padding: .3rem .85rem; border: 1px solid var(--line); border-radius: 999px; color: #cbd5e1; font-size: .78rem; background: #0f172a99; }
.workflow { padding: 1.75rem; border: 1px solid #22d3ee40; border-radius: 28px; background: linear-gradient(145deg, #13253b, #0f172a 70%); box-shadow: 0 20px 60px #00000025; }
.workflow-label { display: flex; justify-content: space-between; gap: 1rem; padding-bottom: 1rem; border-bottom: 1px solid #334155; font-size: .7rem; letter-spacing: .13em; color: var(--accent); }
.status-dot::before { display: inline-block; content: ""; width: 7px; height: 7px; margin-right: .5rem; border-radius: 50%; background: #67e8f9; }
.workflow ol { display: grid; gap: .9rem; margin: 1.25rem 0; padding: 0; list-style: none; }
.workflow li { display: grid; grid-template-columns: 30px 1fr; gap: .7rem; padding: 1rem; border: 1px solid var(--line); border-radius: 16px; background: #02061799; }
.step-number { color: var(--accent); font-size: .8rem; font-weight: 700; }
.workflow h2 { font-size: 1rem; letter-spacing: 0; }
.workflow p { margin-top: .3rem; font-size: .82rem; color: var(--muted); }
.workflow > p { font-size: .78rem; }
.section { padding: 4.5rem 0; border-top: 1px solid var(--line); }
.section-alt { background: #0b1223; }
.section-intro { max-width: 760px; margin-bottom: 2rem; }
.section-intro > p:last-child:not(.eyebrow) { margin-top: 1rem; color: var(--muted); }
.cards { display: grid; gap: 1.2rem; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { padding: 1.65rem; border: 1px solid var(--line); border-radius: 22px; background: #0f172acc; }
.section-alt .card { background: #020617b3; }
.card p { margin-top: .75rem; color: var(--muted); font-size: .92rem; }
.card-kicker { display: block; margin-bottom: .65rem; color: var(--accent); font-size: .72rem; font-weight: 700; letter-spacing: .08em; }
.scope-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.scope-item { padding: 1.6rem; border-left: 2px solid #22d3ee; background: #0f172a; border-radius: 0 16px 16px 0; }
.scope-item p { margin-top: .6rem; color: var(--muted); font-size: .92rem; }
.note { margin-top: 1.5rem; color: var(--muted); font-size: .83rem; }
.price { margin-top: 1.2rem; color: white; font-size: 2rem; font-weight: 800; line-height: 1.4; }
.price span { color: var(--muted); font-size: .85rem; font-weight: 400; }
.text-link { display: inline-flex; gap: .6rem; margin-top: 1.25rem; color: var(--accent); font-size: .9rem; font-weight: 700; text-decoration: underline; text-underline-offset: 5px; }
.text-link:hover { color: white; }
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.5rem; padding: 0; margin: 0; list-style: none; }
.steps li { padding-top: 1rem; border-top: 1px solid #475569; }
.steps .step-number { display: block; margin-bottom: .8rem; }
.steps p { margin-top: .6rem; color: var(--muted); font-size: .9rem; }
.two-column { display: grid; grid-template-columns: .85fr 1.15fr; gap: 3rem; }
.checklist { display: grid; gap: .8rem; margin: 0; padding: 0; list-style: none; }
.checklist li { padding: .8rem 1rem .8rem 1.3rem; border-left: 2px solid #22d3ee; background: #0f172a; color: #cbd5e1; }
.checklist small { display: block; color: var(--muted); }
.faq { max-width: 850px; margin-inline: auto; }
.faq details { margin-top: .85rem; padding: 1.3rem 1.5rem; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.faq summary { cursor: pointer; color: white; font-weight: 700; }
.faq summary::marker { color: var(--accent); }
.faq details p { margin-top: 1rem; color: var(--muted); font-size: .94rem; }
.related { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin-top: 2rem; }
.related a { display: block; padding: 1.6rem; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); }
.related a:hover { border-color: #22d3ee; }
.related strong { display: block; color: var(--accent); font-size: 1.05rem; }
.related span { display: block; margin-top: .5rem; color: var(--muted); font-size: .9rem; }
.cta-panel { padding: 3rem; border: 1px solid #22d3ee50; border-radius: 28px; background: linear-gradient(120deg, #10324880, #0f172a); }
.cta-panel p { max-width: 750px; margin-top: 1rem; color: #cbd5e1; }
.site-footer { padding: 2.5rem 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .8rem; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1.25rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: .65rem 1.25rem; }

@media (max-width: 1000px) {
  .header-nav { gap: 1rem; }
  .header-nav .nav-home { display: none; }
  .hero-grid { gap: 2rem; }
  .cards { gap: 1rem; }
  .card { padding: 1.35rem; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 6rem; }
  .container { width: calc(100% - 36px); }
  .header-inner { min-height: 76px; gap: .75rem; }
  .brand { gap: .6rem; }
  .brand img { width: 40px; height: 40px; border-radius: 12px; }
  .brand-name { font-size: 1.2rem; }
  .brand-caption { display: none; }
  .header-nav > a:not(.button) { display: none; }
  .header-nav .button { padding: .6rem .95rem; font-size: .8rem; }
  .hero { padding: 2.5rem 0 3rem; }
  .hero-grid, .two-column { grid-template-columns: 1fr; gap: 2rem; }
  .workflow { padding: 1.4rem; }
  .section { padding: 3rem 0; }
  .cards, .scope-grid, .related { grid-template-columns: 1fr; }
  .cta-panel { padding: 1.75rem; }
  .faq details { padding: 1.1rem; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 420px) {
  .actions { flex-direction: column; }
  .actions .button { width: 100%; }
  .steps { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}