/* Prometheus — VPS運用管理サービス（東のエデン合同会社）
   外部リソース（Webフォント・CDN・解析タグ）は読み込まない。 */

:root {
  --bg: #0d1117;
  --bg-alt: #11161d;
  --panel: #161b22;
  --line: #262c36;
  --ink: #e6edf3;
  --ink-mid: #adb7c2;
  --ink-soft: #8b949e;
  --accent: #ff8c42;
  --accent-soft: #ffd0a8;
  --radius: 14px;
  --maxw: 1080px;
  --font: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic Medium",
    "Yu Gothic", "Noto Sans JP", "Meiryo", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.85;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

a { color: inherit; }

.inner {
  width: min(100% - 2.5rem, var(--maxw));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #14181e;
  padding: 0.6rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 17, 23, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 68px;
  padding-block: 0.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
}
.brand-mark {
  display: inline-flex;
  color: var(--accent);
  flex: none;
}
.brand-text { display: grid; line-height: 1.3; }
.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
}
.brand-sub {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.3rem;
  font-size: 0.88rem;
}
.nav a { text-decoration: none; color: var(--ink-mid); }
.nav a:hover { color: var(--accent-soft); }

.nav-cta {
  background: var(--accent);
  color: #14181e !important;
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  font-weight: 700;
}
.nav-cta:hover { background: var(--accent-soft); }

/* ---------- hero ---------- */

.hero {
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(90% 70% at 78% 0%, rgba(255, 140, 66, 0.14) 0%, rgba(255, 140, 66, 0) 60%),
    linear-gradient(180deg, #0f141b 0%, var(--bg) 100%);
}

.hero-inner { padding-block: clamp(3.5rem, 9vw, 6.5rem); }

.badge {
  display: inline-block;
  margin: 0 0 1.4rem;
  padding: 0.3rem 0.9rem;
  border: 1px solid rgba(255, 140, 66, 0.5);
  border-radius: 999px;
  color: var(--accent-soft);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.hero-title {
  margin: 0 0 1.5rem;
  font-size: clamp(2rem, 5.6vw, 3.3rem);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.hero-lead {
  margin: 0 0 2.2rem;
  max-width: 46em;
  color: var(--ink-mid);
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }

.button {
  display: inline-block;
  padding: 0.8rem 1.7rem;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.button.primary { background: var(--accent); color: #14181e; font-weight: 700; }
.button.primary:hover { background: var(--accent-soft); }
.button.ghost { border-color: var(--line); color: var(--ink-mid); }
.button.ghost:hover { border-color: var(--accent); color: var(--accent-soft); }

/* ---------- sections ---------- */

.section { padding-block: clamp(3rem, 7vw, 5rem); }
.section-alt { background: var(--bg-alt); }

.section-eyebrow {
  margin: 0 0 0.3rem;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-title {
  margin: 0 0 1.2rem;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  letter-spacing: 0.03em;
}

.section-lead {
  margin: 0 0 2rem;
  max-width: 46em;
  color: var(--ink-mid);
  font-size: 0.95rem;
}

.scope-terms {
  margin: 0 0 1.8rem;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  background: var(--panel);
  font-size: 0.86rem;
  color: var(--ink-mid);
  max-width: 52em;
}

.section-note {
  margin: 1.4rem 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

/* ---------- cards ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.1rem;
}

.card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem;
}
.card-num {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.card h3 { margin: 0 0 0.5rem; font-size: 1.02rem; line-height: 1.6; }
.card p { margin: 0; font-size: 0.9rem; color: var(--ink-mid); }
/* ---------- 解決できる課題 ---------- */

.issue-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 0.7rem;
}
.issue-list li {
  position: relative;
  padding: 0.9rem 1.1rem 0.9rem 2.6rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 0.92rem;
  color: var(--ink-mid);
}
.issue-list li::before {
  content: "✓";
  position: absolute;
  left: 1rem;
  color: var(--accent);
  font-weight: 700;
}

/* ---------- FAQ ---------- */

.faq { margin: 0; display: grid; gap: 0.8rem; }
.faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
}
.faq dt {
  margin: 0 0 0.5rem;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--ink);
  padding-left: 1.7rem;
  position: relative;
}
.faq dt::before {
  content: "Q";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}
.faq dd {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-mid);
  padding-left: 1.7rem;
  position: relative;
}
.faq dd::before {
  content: "A";
  position: absolute;
  left: 0;
  color: var(--ink-soft);
  font-weight: 700;
}

/* ---------- diagram ---------- */

.diagram {
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem;
  overflow-x: auto;
}
.diagram svg { width: 100%; min-width: 620px; height: auto; display: block; }
.diagram figcaption {
  margin-top: 1.1rem;
  font-size: 0.83rem;
  color: var(--ink-soft);
  line-height: 1.8;
}

/* ---------- list ---------- */

.check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}
.check-list li {
  position: relative;
  padding-left: 1.8rem;
  color: var(--ink-mid);
  font-size: 0.95rem;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0.35rem;
  top: 0.75em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- flow ---------- */

.flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  counter-reset: flow;
}
.flow li {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.3rem 1.5rem;
}
.flow-step {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 0.35rem;
}
.flow h3 { margin: 0 0 0.4rem; font-size: 1.02rem; }
.flow p { margin: 0; font-size: 0.9rem; color: var(--ink-mid); }

/* ---------- price ---------- */

.price-box {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem 1.8rem;
  text-align: center;
}
.price-main {
  margin: 0 0 0.8rem;
  font-size: clamp(1.3rem, 3.4vw, 1.8rem);
  font-weight: 700;
  color: var(--accent-soft);
}
.price-desc {
  margin: 0 auto;
  max-width: 42em;
  font-size: 0.92rem;
  color: var(--ink-mid);
}

/* ---------- contact ---------- */

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}
.contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem 1.2rem;
}
.contact-label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  min-width: 4rem;
}
.contact-value {
  font-size: 1.05rem;
  color: var(--accent-soft);
  text-decoration: none;
  word-break: break-all;
}
.contact-value:hover { text-decoration: underline; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2.4rem;
  background: #0a0e13;
}
.footer-brand { margin: 0 0 0.5rem; font-weight: 700; font-size: 0.95rem; }
.footer-note { margin: 0 0 0.8rem; font-size: 0.85rem; color: var(--ink-soft); }
.footer-link { margin: 0 0 1.2rem; font-size: 0.88rem; }
.footer-link a { color: var(--accent-soft); }
.footer-disclaimer {
  margin: 0 0 1rem;
  font-size: 0.75rem;
  color: var(--ink-soft);   /* #0a0e13 上で 6.29:1（WCAG AA） */
  max-width: 48em;
  line-height: 1.7;
}
.footer-copy { margin: 0; font-size: 0.78rem; color: var(--ink-soft); }

/* ---------- responsive ---------- */

@media (max-width: 760px) {
  .header-inner { flex-wrap: wrap; }
  .nav {
    gap: 0.9rem;
    font-size: 0.82rem;
    width: 100%;
    padding-bottom: 0.4rem;
    flex-wrap: nowrap;
  }
  .nav a { white-space: nowrap; }
  /* 幅が足りないため、副次的な項目は隠す（本文スクロールで到達できる） */
  .nav-wide { display: none; }
  .nav-cta { padding: 0.4rem 0.9rem; margin-left: auto; }
}