/* AISYS（アイシス）トップページ専用。他ページの style.css には影響させない */
:root {
  --ink: #1C2430;
  --sub: #4A5260;
  --line: #D6D3CB;
  --bg: #F7F6F2;
  --card: #FFFFFF;
  --blue: #0F5E8C;
  --blue-dark: #0A4566;
  --orange: #D9822B;
  --orange-bg: #FFF4E8;
  --orange-ink: #9A4D0C;
  --error: #B42318;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', 'Meiryo', sans-serif;
  line-height: 1.7;
}
a { color: var(--blue); }
a:hover { color: var(--blue-dark); }
h1, h2, h3, p { margin: 0; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.section { padding: 64px 0 24px; }
.section > .wrap { display: flex; flex-direction: column; gap: 24px; }
.section-title { font-size: 28px; font-weight: 700; }
.lead { font-size: 16px; color: var(--sub); max-width: 760px; }
.note { font-size: 13px; color: var(--sub); }

/* ヘッダー */
.site-header { border-bottom: 1px solid var(--line); background: var(--card); }
.site-header .wrap {
  padding-top: 14px; padding-bottom: 14px;
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px 24px;
}
.brand { text-decoration: none; color: var(--ink); font-weight: 700; font-size: 17px; }
.brand small { font-size: 12px; font-weight: 500; color: var(--sub); margin-left: 1em; }
.site-nav { display: flex; flex-wrap: wrap; gap: 4px 20px; font-size: 14px; }
.site-nav a { text-decoration: none; padding: 10px 0; }
.site-nav .nav-cta { padding: 10px 16px; background: var(--blue); color: #FFFFFF; border-radius: 8px; }
.site-nav .nav-cta:hover { background: var(--blue-dark); color: #FFFFFF; }

/* ファーストビュー */
.hero { background: var(--blue); color: #FFFFFF; }
.hero .wrap { padding-top: 80px; padding-bottom: 72px; display: flex; flex-direction: column; gap: 20px; }
.hero-kicker { font-size: 15px; font-weight: 500; letter-spacing: 0.08em; }
.hero h1 { font-size: clamp(34px, 6vw, 56px); line-height: 1.25; font-weight: 900; }
.hero-text { font-size: 18px; max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.btn-white { text-decoration: none; background: #FFFFFF; color: var(--blue); font-weight: 700; padding: 14px 24px; border-radius: 10px; }
.btn-outline { text-decoration: none; border: 1px solid #FFFFFF; color: #FFFFFF; font-weight: 500; padding: 14px 24px; border-radius: 10px; }
.btn-outline:hover { color: #FFFFFF; background: rgba(255, 255, 255, 0.12); }

/* カード */
.grid { display: grid; gap: 16px; }
.grid-240 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-220 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid-300 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 22px;
  display: flex; flex-direction: column; gap: 8px;
}
.card h3 { font-size: 18px; font-weight: 700; }
.card p { font-size: 14px; color: var(--sub); }
.card-plain { font-size: 15px; padding: 20px; }
.card .step-no { font-size: 13px; font-weight: 700; color: var(--blue); }
.card .case-tag { font-size: 13px; }
.card .case-result { font-size: 15px; font-weight: 700; color: var(--blue); }

/* 料金 */
.price-card { padding: 24px; gap: 6px; }
.price-card.featured { border: 2px solid var(--blue); }
.price-card h3 { font-size: 17px; }
.card .price { font-size: 30px; font-weight: 900; color: var(--ink); }

/* よくある質問 */
.faq-list { display: flex; flex-direction: column; gap: 16px; }
.faq-list details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; }
.faq-list summary { cursor: pointer; font-size: 16px; font-weight: 700; padding: 6px 0; }
.faq-list details p { margin-top: 8px; font-size: 15px; color: var(--sub); }

/* 申込み */
.contact-section { padding: 64px 0 80px; }
.contact-box {
  background: var(--orange-bg); border: 2px solid var(--orange); border-radius: 16px; padding: 32px 28px;
  display: flex; flex-wrap: wrap; gap: 32px;
}
.contact-info { flex: 1 1 320px; display: flex; flex-direction: column; gap: 12px; font-size: 15px; }
.contact-kicker { font-size: 14px; font-weight: 700; color: var(--orange-ink); }
.contact-info h2 { font-size: 28px; font-weight: 900; }
.contact-form { flex: 1 1 320px; display: flex; flex-direction: column; gap: 14px; }
.contact-form[hidden] { display: none; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 14px; font-weight: 700; }
.field .req { color: var(--error); font-size: 12px; margin-left: 6px; }
.field .opt { color: var(--sub); font-size: 12px; font-weight: 500; margin-left: 6px; }
.field input, .field textarea {
  font: inherit; padding: 12px; border: 1px solid #A9ADB5; border-radius: 8px; background: #FFFFFF; color: var(--ink);
}
.field input:focus, .field textarea:focus { outline: 2px solid var(--blue); outline-offset: 1px; }
.hp-field { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.consent { font-size: 13px; color: var(--sub); }
.btn-submit {
  font: inherit; font-weight: 700; padding: 14px; border: none; border-radius: 10px;
  background: var(--blue); color: #FFFFFF; cursor: pointer;
}
.btn-submit:hover { background: var(--blue-dark); }
.btn-submit:disabled { opacity: 0.6; cursor: default; }
.form-error { color: var(--error); font-size: 14px; font-weight: 700; }
.form-done {
  flex: 1 1 320px; background: var(--card); border-radius: 12px; padding: 28px;
  display: flex; flex-direction: column; gap: 10px;
}
.form-done[hidden] { display: none; }
.form-done h3 { font-size: 20px; }

/* フッター */
.site-footer { border-top: 1px solid var(--line); background: var(--card); }
.site-footer .wrap {
  padding-top: 28px; padding-bottom: 28px;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 13px; color: var(--sub);
}
.site-footer strong { color: var(--ink); }

@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  .hero .wrap { padding-top: 56px; padding-bottom: 48px; }
  .hero-text { font-size: 16px; }
  .section-title, .contact-info h2 { font-size: 23px; }
  .contact-box { padding: 24px 18px; }
  .brand small { display: block; margin-left: 0; }
}