/* =========================================================
   Hiroaki Tsuboi Research Office
   白 × 薄いグレー × ネイビー / 誠実・実務的・シンプル
   ========================================================= */

:root {
  --ink: #1c2b3a;        /* 本文の濃紺グレー */
  --navy: #16325c;       /* 見出し・主ボタン */
  --blue: #2f6db5;       /* リンク・アクセント */
  --pale: #eaf1f8;       /* 淡いブルー背景 */
  --bg: #ffffff;
  --bg-alt: #f5f7fa;     /* 薄いグレー背景 */
  --border: #d8e0e9;
  --muted: #5a6b7d;
  --max: 1100px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.9;
  font-size: 16px;
}

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

/* ---------- ヘッダー ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 12px;
  padding-bottom: 12px;
  flex-wrap: wrap;
}

.brand { text-decoration: none; color: var(--navy); line-height: 1.35; }
.brand-en { display: block; font-weight: 700; letter-spacing: 0.02em; }
.brand-ja { display: block; font-size: 12px; color: var(--muted); }

.nav { display: flex; flex-wrap: wrap; gap: 4px 18px; }
.nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.06em;
  padding: 4px 2px;
  border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--blue); border-bottom-color: var(--blue); }
.nav a:focus-visible,
.btn:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

/* ---------- 見出し・共通 ---------- */
.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 0 0 8px;
}
.eyebrow::after {
  content: "";
  display: inline-block;
  width: 40px;
  height: 1px;
  background: var(--blue);
  vertical-align: middle;
  margin-left: 12px;
}
.eyebrow-light { color: #bcd3ec; }
.eyebrow-light::after { background: #bcd3ec; }

h1, h2, h3 { color: var(--navy); line-height: 1.5; }
h1 { font-size: clamp(26px, 4.6vw, 40px); margin: 0 0 20px; letter-spacing: 0.01em; }
h2 { font-size: clamp(22px, 3.2vw, 28px); margin: 0 0 20px; }
h3 { font-size: 17px; margin: 0 0 10px; }

.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); }
.section-note { font-size: 14px; color: var(--muted); }

p { margin: 0 0 14px; }
ul { padding-left: 1.3em; margin: 0 0 14px; }

/* ---------- ヒーロー ---------- */
.hero {
  padding: 84px 0 76px;
  background: linear-gradient(180deg, var(--pale) 0%, #ffffff 100%);
  border-bottom: 1px solid var(--border);
}
.hero .lead { max-width: 760px; }

.chips {
  list-style: none;
  padding: 0;
  margin: 24px 0 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chips li {
  font-size: 13px;
  color: var(--navy);
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 14px;
}

/* ---------- ボタン ---------- */
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  border: 1px solid transparent;
}
.btn-primary { background: var(--navy); color: #ffffff; }
.btn-primary:hover { background: #1e4278; }
.btn-ghost { background: #ffffff; color: var(--navy); border-color: var(--navy); }
.btn-ghost:hover { background: var(--pale); }
.btn-light { background: #ffffff; color: var(--navy); }
.btn-light:hover { background: var(--pale); }

/* ---------- 運営者 ---------- */
.about-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--navy);
  border-radius: 6px;
  padding: 28px 30px;
  max-width: 820px;
}
.about-name { font-size: 20px; font-weight: 700; color: var(--navy); }
.about-name span { font-size: 14px; font-weight: 400; color: var(--muted); }

/* ---------- 対応できること ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 28px;
}
.card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 26px 26px 20px;
}
.card-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--blue);
  margin: 14px 0 6px;
}
.card ul { margin: 0; font-size: 14.5px; }
.card li { margin-bottom: 3px; }

/* ---------- 表 ---------- */
.table-wrap { overflow-x: auto; margin: 20px 0; }
table { border-collapse: collapse; width: 100%; background: #ffffff; }
th, td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  font-size: 13.5px;
  text-align: left;
  vertical-align: top;
}
th {
  background: var(--navy);
  color: #ffffff;
  font-weight: 600;
  white-space: nowrap;
}
.sample-table td { min-width: 110px; }
.prio { text-align: center; font-weight: 700; }
.prio-a { color: var(--navy); background: var(--pale); }
.prio-b { color: var(--muted); }

.pricing-table { max-width: 640px; }
.pricing-table td:last-child { white-space: nowrap; }

/* ---------- ご相談の流れ ---------- */
.steps {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 28px 0 0;
  max-width: 760px;
}
.steps li {
  counter-increment: step;
  position: relative;
  padding: 0 0 28px 64px;
  border-left: 1px solid var(--border);
  margin-left: 21px;
}
.steps li:last-child { border-left-color: transparent; padding-bottom: 0; }
.steps li::before {
  content: counter(step);
  position: absolute;
  left: -22px;
  top: 0;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--navy);
  color: #ffffff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.steps h3 { margin-top: 8px; }

/* ---------- 対応範囲 ---------- */
.scope-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 28px 0 20px;
}
.scope-col {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px 26px;
}
.scope-ok { border-top: 4px solid var(--blue); }
.scope-ng { border-top: 4px solid #9aa7b5; }
.scope-col ul { margin: 0; font-size: 14.5px; }
.scope-col li { margin-bottom: 4px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; }
.faq-list details {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 10px;
  padding: 0 20px;
}
.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--navy);
  padding: 15px 0;
  list-style-position: inside;
}
.faq-list details[open] summary { border-bottom: 1px solid var(--border); }
.faq-list details p { padding: 12px 0 16px; margin: 0; font-size: 15px; }

/* ---------- お問い合わせ ---------- */
.contact { background: var(--navy); color: #eaf1f8; }
.contact h2 { color: #ffffff; }
.contact-list {
  columns: 2;
  max-width: 560px;
  font-size: 14.5px;
  margin-bottom: 20px;
}
.contact-mail { font-size: 15px; }
.contact-mail a { color: #ffffff; font-weight: 700; }

/* ---------- フッター ---------- */
.site-footer {
  background: #0f2340;
  color: #b9c6d6;
  padding: 36px 0;
  font-size: 13px;
  line-height: 1.8;
}
.footer-brand { color: #ffffff; font-weight: 700; margin-bottom: 6px; }
.footer-desc { margin-bottom: 14px; }
.footer-copy { margin: 0; color: #8fa0b5; }

/* ---------- スマホ対応 ---------- */
.sp-only { display: none; }

@media (max-width: 800px) {
  .section { padding: 52px 0; }
  .hero { padding: 56px 0 52px; }
  .card-grid, .scope-grid { grid-template-columns: 1fr; }
  .contact-list { columns: 1; }
  .header-inner { justify-content: center; text-align: center; }
  .nav { justify-content: center; }
  .sp-only { display: inline; }
  .steps li { padding-left: 56px; }
}