/* =============================================================
   SeeQuense LP — スタイルシート
   S3 静的ホスティング前提 / ビルドツール不要
   ============================================================= */

/* ── リセット & ベース ─────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #0055cc;
  --color-primary-dark: #003d99;
  --color-primary-light: #e8f0fe;
  --color-accent: #1976d2;
  --color-text: #1a1a2e;
  --color-text-muted: #555577;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6fa;
  --color-bg-card-active: #e8f0fe;
  --color-bg-card-upcoming: #f5f5f7;
  --color-bg-disclaimer: #fff8e1;
  --color-border-disclaimer: #f9a825;
  --color-border-intended: #e0e0e0;
  --color-border-card: #d0d9ee;
  --color-white: #ffffff;
  --color-wip: #757575;
  --color-wip-bg: #f0f0f0;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-card: 0 4px 16px rgba(0, 60, 140, 0.10), 0 1px 4px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 10px 32px rgba(0, 60, 140, 0.15), 0 2px 8px rgba(0, 0, 0, 0.08);
  --max-width: 1100px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

html {
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

/* ── レイアウト ─────────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1rem;
  text-align: center;
}

.section-lead {
  color: var(--color-text-muted);
  text-align: center;
  max-width: 640px;
  margin: 0 auto 2.5rem;
}

/* ── ボタン ─────────────────────────────────────────────────── */
.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--color-bg-alt);
  text-decoration: none;
}

/* ── ヒーロー ─────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, #0a0a2e 0%, #001a5c 100%);
  color: var(--color-white);
  padding: 6rem 0 5rem;
  text-align: center;
}

.hero-brand {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #7eb8ff;
  margin-bottom: 1.5rem;
}

.hero-catch {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-white);
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 540px;
  margin: 0 auto 2rem;
}

/* ── 機能グリッド ────────────────────────────────────────────── */
.features {
  background-color: var(--color-bg);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.feature-card {
  background-color: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow);
}

.feature-icon-svg {
  width: 2rem;
  height: 2rem;
  margin-bottom: 0.75rem;
  color: var(--color-primary);
  display: block;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ── 製品カード（index.html の 2 列グリッド） ─────────────────── */
.products {
  background-color: var(--color-bg-alt);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 1.5rem;
  align-items: stretch;
}

/* カード共通 */
.product-card {
  border-radius: var(--radius);
  padding: 0;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--color-border-card);
  background-color: var(--color-white);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  text-decoration: none;
  color: inherit;
}

/* リンクカード（SeeQuense 本体）のホバー */
a.product-card:hover,
a.product-card:focus {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  text-decoration: none;
  color: inherit;
}

a.product-card:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* ── カードヘッダー帯 ── */
.product-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.75rem 0;
}

/* アクティブカードのヘッダーはグラデーション帯 */
.product-card-active .product-card-header {
  background: linear-gradient(135deg, #e8f0fe 0%, #d6e4ff 100%);
  margin: 0;
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid #c4d7f7;
}

.product-card-upcoming .product-card-header {
  background-color: var(--color-bg-card-upcoming);
  margin: 0;
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--color-border-card);
}

/* カードアイコン */
.product-card-icon {
  width: 2.25rem;
  height: 2.25rem;
  flex-shrink: 0;
}

.product-card-active .product-card-icon {
  color: var(--color-primary);
}

.product-card-upcoming .product-card-icon {
  color: #90a4ae;
}

/* ステータスバッジ */
.product-card-status {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  text-transform: uppercase;
}

.product-card-status-live {
  background-color: #e3f2fd;
  color: #1565c0;
  border: 1px solid #bbdefb;
}

.product-card-status-upcoming {
  background-color: #f5f5f5;
  color: #757575;
  border: 1px solid #e0e0e0;
}

/* カード本体テキスト */
.product-card h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--color-text);
  padding: 1.5rem 1.75rem 0;
}

.product-card-active h3 {
  color: var(--color-primary-dark);
}

.product-card-upcoming h3 {
  color: #546e7a;
}

.product-card > p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  padding: 0 1.75rem;
  flex: 1;
}

.product-card p + p {
  margin-top: 0.75rem;
}

.product-card-note {
  margin: 1rem 1.75rem 1.75rem;
  padding: 0.85rem 1rem;
  background-color: var(--color-bg-card-upcoming);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-card);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.product-card-cta {
  padding: 1.25rem 1.75rem 1.75rem;
}

.product-card-link-cue {
  display: inline-block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  padding: 0.5rem 1.25rem;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease;
}

a.product-card:hover .product-card-link-cue {
  background-color: var(--color-primary-light);
}

/* ── 準備中マーカー ─────────────────────────────────────────── */
.wip-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-wip);
  background-color: var(--color-wip-bg);
  border: 1px solid #e0e0e0;
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  vertical-align: middle;
  margin-left: 0.6rem;
  letter-spacing: 0;
}

.wip-inline {
  display: inline;
  font-size: 0.85em;
  color: var(--color-wip);
  background-color: var(--color-wip-bg);
  border-radius: var(--radius-sm);
  padding: 0.1em 0.5em;
  margin-left: 0.25em;
}


/* ── 免責セクション ──────────────────────────────────────────── */
.disclaimer {
  background-color: var(--color-bg);
}

.disclaimer-box {
  background-color: var(--color-bg-disclaimer);
  border: 1.5px solid var(--color-border-disclaimer);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  margin-bottom: 2rem;
}

.disclaimer-box p {
  color: var(--color-text);
  font-size: 0.95rem;
  line-height: 1.7;
}

.disclaimer-box p + p {
  margin-top: 0.75rem;
}

.disclaimer-box strong {
  color: #b71c1c;
}

.intended-use-box {
  border: 1.5px solid var(--color-border-intended);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  background-color: var(--color-bg-alt);
}

.intended-use-box h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.intended-use-box h3 + ul {
  margin-bottom: 1.25rem;
}

.intended-use-box ul {
  list-style: disc;
  padding-left: 1.5rem;
}

.intended-use-box li {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 0.25rem;
}

/* ── フッタ ─────────────────────────────────────────────────── */
.footer {
  background-color: #0a0a2e;
  color: rgba(255, 255, 255, 0.75);
  padding: 2.5rem 0;
  text-align: center;
}

.footer-brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: #7eb8ff;
  margin-bottom: 1rem;
}

.footer-nav {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9rem;
}

.footer-nav a:hover,
.footer-nav a:focus {
  color: var(--color-white);
}

.footer-nav a[aria-current="page"] {
  color: var(--color-white);
  font-weight: 600;
  text-decoration: underline;
}

.footer-copy {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ── セキュリティセクション ──────────────────────────────────── */
.security {
  background-color: var(--color-bg);
}

.security-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 1rem;
}

/* ── 導入の流れ ──────────────────────────────────────────────── */
.onboarding {
  background-color: var(--color-bg);
}

.onboarding-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 1rem;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.onboarding-step {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background-color: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow);
}

.step-number {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.step-body p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ── FAQ ─────────────────────────────────────────────────────── */
.faq {
  background-color: var(--color-bg-alt);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 760px;
  margin: 1rem auto 0;
}

.faq-item {
  background-color: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-question {
  display: block;
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  font-size: 0.975rem;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  position: relative;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "+";
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  color: var(--color-primary);
  line-height: 1;
}

.faq-item[open] .faq-question::after {
  content: "\2212";
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  border-top: 1px solid var(--color-bg-alt);
}

.faq-answer p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ── 運営者情報 ──────────────────────────────────────────────── */
.company-info {
  background-color: var(--color-bg);
}

.company-table-wrapper {
  max-width: 720px;
  margin: 1rem auto 0;
  overflow-x: auto;
}

.company-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.company-table th,
.company-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-border-intended);
}

.company-table th {
  white-space: nowrap;
  color: var(--color-text);
  font-weight: 600;
  width: 13rem;
  background-color: var(--color-bg-alt);
}

.company-table td {
  color: var(--color-text-muted);
  min-height: 1.5rem;
}

.company-table tr:last-child th,
.company-table tr:last-child td {
  border-bottom: none;
}


/* ── レスポンシブ ────────────────────────────────────────────── */
@media (max-width: 600px) {
  .hero-catch {
    font-size: 1.625rem;
  }

  .hero-brand {
    font-size: 1.625rem;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .security-grid {
    grid-template-columns: 1fr;
  }

  .product-card h3 {
    padding: 1.25rem 1.25rem 0;
  }

  .product-card > p {
    padding: 0 1.25rem;
  }

  .product-card-cta,
  .product-card-header {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .product-card-note {
    margin-left: 1.25rem;
    margin-right: 1.25rem;
  }

  .product-card-active .product-card-header,
  .product-card-upcoming .product-card-header {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
}