/* ===================================================================
   AI自動化ラボ 営業LP 共通スタイル
   トーン: 紺×白基調・信頼感のある落ち着いたビジネストーン
   =================================================================== */

:root {
  --navy-900: #16213e;
  --navy-800: #1b2a4a;
  --navy-700: #24365e;
  --navy-100: #e8edf5;
  --navy-50:  #f4f7fb;
  --accent:   #2f6fd0;   /* CTA用の明るめブルー */
  --accent-dark: #2558a8;
  --text:     #26303f;
  --text-sub: #5a6678;
  --white:    #ffffff;
  --border:   #d8dfe9;
  --max-w:    960px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI",
               "Yu Gothic", Meiryo, system-ui, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.85;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

img { max-width: 100%; height: auto; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- ヘッダー ---------- */
.site-header {
  background: var(--navy-900);
  color: var(--white);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 6px rgba(0,0,0,.25);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.brand {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .04em;
  color: var(--white);
  text-decoration: none;
}
.brand small {
  display: block;
  font-weight: 400;
  font-size: .68rem;
  color: #aebad0;
  letter-spacing: .08em;
}
.header-cta {
  background: var(--accent);
  color: var(--white);
  text-decoration: none;
  font-size: .85rem;
  font-weight: 700;
  padding: 9px 18px;
  border-radius: 6px;
  white-space: nowrap;
}
.header-cta:hover { background: var(--accent-dark); }

/* ---------- ヒーロー ---------- */
.hero {
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-700) 100%);
  color: var(--white);
  padding: 72px 0 64px;
  text-align: center;
}
.hero .lead-label {
  display: inline-block;
  border: 1px solid rgba(255,255,255,.45);
  border-radius: 999px;
  font-size: .8rem;
  padding: 4px 16px;
  letter-spacing: .1em;
  margin-bottom: 22px;
  color: #dbe4f2;
}
.hero h1 {
  font-size: clamp(1.5rem, 4.6vw, 2.3rem);
  font-weight: 700;
  line-height: 1.55;
  margin-bottom: 18px;
}
.hero .sub {
  font-size: clamp(.95rem, 2.6vw, 1.1rem);
  color: #ccd6e8;
  max-width: 640px;
  margin: 0 auto 34px;
}
.hero-cta-row {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 700;
  border-radius: 8px;
  padding: 14px 30px;
  font-size: 1rem;
  transition: opacity .15s, background .15s;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 3px 10px rgba(0,0,0,.25);
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,.7);
}
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.hero .note {
  margin-top: 18px;
  font-size: .82rem;
  color: #a9b6cd;
}

/* ---------- セクション共通 ---------- */
section { padding: 64px 0; }
section.alt { background: var(--navy-50); }

.sec-label {
  text-align: center;
  color: var(--accent);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .22em;
  margin-bottom: 8px;
}
h2 {
  text-align: center;
  font-size: clamp(1.3rem, 3.6vw, 1.7rem);
  color: var(--navy-900);
  margin-bottom: 36px;
  line-height: 1.5;
}
.sec-intro {
  max-width: 680px;
  margin: -16px auto 36px;
  text-align: center;
  color: var(--text-sub);
  font-size: .95rem;
}

/* ---------- 課題提起 ---------- */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.pain-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 4px solid var(--navy-700);
  border-radius: 8px;
  padding: 22px 22px 18px;
}
.pain-card h3 {
  font-size: 1rem;
  color: var(--navy-900);
  margin-bottom: 8px;
}
.pain-card p { font-size: .9rem; color: var(--text-sub); }
.pain-closing {
  text-align: center;
  margin-top: 32px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--navy-900);
}

/* ---------- デモ動画 ---------- */
.video-wrap {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(22,33,62,.22);
  background: #000;
}
.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.video-caption {
  text-align: center;
  margin-top: 16px;
  font-size: .88rem;
  color: var(--text-sub);
}
.demo-cta { text-align: center; margin-top: 28px; }

/* ---------- 仕組み ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  counter-reset: step;
}
.step-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px 20px;
  text-align: center;
  position: relative;
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--navy-800);
  color: var(--white);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 12px;
}
.step-card h3 { font-size: .98rem; color: var(--navy-900); margin-bottom: 8px; }
.step-card p  { font-size: .85rem; color: var(--text-sub); }

.feature-list {
  max-width: 720px;
  margin: 40px auto 0;
  display: grid;
  gap: 12px;
}
.feature-list li {
  list-style: none;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 18px;
  font-size: .93rem;
}
.feature-list li strong { color: var(--navy-900); }
.feature-list li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 700;
  margin-right: 10px;
}

/* ---------- 料金 ---------- */
.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  max-width: 760px;
  margin: 0 auto;
}
.price-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px 24px;
  text-align: center;
}
.price-card.em { border: 2px solid var(--accent); }
.price-card h3 {
  font-size: .95rem;
  color: var(--text-sub);
  font-weight: 700;
  letter-spacing: .08em;
  margin-bottom: 10px;
}
.price-value {
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--navy-900);
  line-height: 1.3;
}
.price-value small { font-size: .85rem; font-weight: 400; color: var(--text-sub); }
.price-card p { font-size: .85rem; color: var(--text-sub); margin-top: 10px; }
.price-note {
  text-align: center;
  font-size: .85rem;
  color: var(--text-sub);
  margin-top: 18px;
}

.free-banner {
  max-width: 760px;
  margin: 34px auto 0;
  background: var(--navy-800);
  color: var(--white);
  border-radius: 10px;
  padding: 26px 28px;
  text-align: center;
}
.free-banner strong { font-size: 1.15rem; display: block; margin-bottom: 8px; }
.free-banner p { font-size: .9rem; color: #ccd6e8; }

.subsidy-box {
  max-width: 760px;
  margin: 26px auto 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px 26px;
}
.subsidy-box h3 {
  font-size: .95rem;
  color: var(--navy-900);
  margin-bottom: 10px;
}
.subsidy-box p { font-size: .88rem; color: var(--text); }
.subsidy-box .small { font-size: .78rem; color: var(--text-sub); margin-top: 10px; }

/* ---------- 導入の流れ ---------- */
.flow {
  max-width: 720px;
  margin: 0 auto;
  display: grid;
  gap: 0;
}
.flow-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--border);
}
.flow-item:last-child { border-bottom: none; }
.flow-badge {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--navy-100);
  color: var(--navy-800);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
}
.flow-item h3 { font-size: 1rem; color: var(--navy-900); margin-bottom: 4px; }
.flow-item p { font-size: .88rem; color: var(--text-sub); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-list details {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-list summary {
  cursor: pointer;
  padding: 16px 20px;
  font-weight: 700;
  font-size: .95rem;
  color: var(--navy-900);
  list-style: none;
  position: relative;
  padding-right: 44px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "＋";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-weight: 400;
}
.faq-list details[open] summary::after { content: "－"; }
.faq-list .faq-a {
  padding: 0 20px 18px;
  font-size: .9rem;
  color: var(--text-sub);
}

/* ---------- 問い合わせ ---------- */
.contact {
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-700) 100%);
  color: var(--white);
  text-align: center;
}
.contact h2 { color: var(--white); }
.contact .sec-label { color: #8fb4e8; }
.contact p.desc {
  max-width: 620px;
  margin: -16px auto 30px;
  font-size: .95rem;
  color: #ccd6e8;
}
.contact-mail {
  margin-top: 22px;
  font-size: .9rem;
  color: #aebad0;
}
.contact-mail a { color: #cfe0f7; }

/* ---------- フッター ---------- */
.site-footer {
  background: var(--navy-900);
  color: #9aa8c0;
  font-size: .8rem;
  padding: 28px 0;
  border-top: 1px solid rgba(255,255,255,.08);
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.site-footer a { color: #cdd8ea; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

/* ---------- 事業者情報ページ ---------- */
.company-main { padding: 56px 0 72px; }
.company-main h1 {
  font-size: 1.45rem;
  color: var(--navy-900);
  text-align: center;
  margin-bottom: 10px;
}
.company-main .page-sub {
  text-align: center;
  color: var(--text-sub);
  font-size: .88rem;
  margin-bottom: 40px;
}
.company-table {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  border-collapse: collapse;
  background: var(--white);
}
.company-table th,
.company-table td {
  border: 1px solid var(--border);
  padding: 15px 18px;
  font-size: .92rem;
  text-align: left;
  vertical-align: top;
}
.company-table th {
  background: var(--navy-50);
  color: var(--navy-900);
  width: 32%;
  font-weight: 700;
  white-space: nowrap;
}
.company-note {
  max-width: 720px;
  margin: 26px auto 0;
  font-size: .82rem;
  color: var(--text-sub);
}
.back-link {
  display: block;
  text-align: center;
  margin-top: 40px;
}
.back-link a { color: var(--accent); font-size: .92rem; }

/* ---------- レスポンシブ微調整 ---------- */
@media (max-width: 640px) {
  section { padding: 48px 0; }
  .hero { padding: 56px 0 48px; }
  .btn { width: 100%; max-width: 340px; }
  .company-table th { width: auto; min-width: 7.5em; white-space: normal; }
}