/* ============================================================
   実家・空き家じまい相談室 — 共通デザインシステム
   ============================================================ */

:root {
  --color-bg: #FBF7F0;           /* 温かみのあるクリーム背景 */
  --color-bg-alt: #F2ECDF;       /* セクション区切り用の淡いベージュ */
  --color-surface: #FFFFFF;
  --color-ink: #2E2A24;          /* 本文の墨色 */
  --color-ink-soft: #5C564C;
  --color-primary: #2F5546;      /* 深緑（信頼・安心） */
  --color-primary-dark: #1F3B30;
  --color-accent: #C1652F;       /* テラコッタ（CTA・差し色） */
  --color-accent-dark: #A2521F;
  --color-line: #E3DACB;
  --radius: 14px;
  --shadow-soft: 0 10px 30px rgba(46, 42, 36, 0.08);
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", serif;
  color: var(--color-primary-dark);
  line-height: 1.5;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(1.9rem, 4vw, 2.7rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--color-ink); }

a { color: var(--color-primary); text-decoration-color: var(--color-line); }
a:hover { color: var(--color-accent); }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 247, 240, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: "Noto Serif JP", serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-primary-dark);
  text-decoration: none;
}
.brand small {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 400;
  font-size: 0.7rem;
  color: var(--color-ink-soft);
}
.site-nav { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }
.site-nav a {
  font-size: 0.92rem;
  color: var(--color-ink-soft);
  text-decoration: none;
}
.site-nav a:hover { color: var(--color-primary); }
.btn-nav-cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 700;
}
.btn-nav-cta:hover { background: var(--color-accent-dark); }

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 56px;
  background:
    radial-gradient(1200px 400px at 80% -10%, rgba(47,85,70,0.10), transparent 60%),
    var(--color-bg);
}
.hero .eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  background: rgba(47,85,70,0.08);
  border: 1px solid rgba(47,85,70,0.2);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 { max-width: 18ch; }
.hero .lede {
  font-size: 1.1rem;
  color: var(--color-ink-soft);
  max-width: 56ch;
  margin-bottom: 28px;
}
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-badges {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--color-ink-soft);
}
.hero-badges span::before { content: "✓ "; color: var(--color-primary); font-weight: 700; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  font-size: 1rem;
  transition: transform .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--color-accent); color: #fff !important; box-shadow: var(--shadow-soft); }
.btn-primary:hover { background: var(--color-accent-dark); }
.btn-secondary { background: transparent; color: var(--color-primary-dark) !important; border: 1.5px solid var(--color-primary-dark); }
.btn-secondary:hover { background: var(--color-primary-dark); color: #fff !important; }

/* ---------- Sections ---------- */
section { padding: 64px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-head { max-width: 62ch; margin-bottom: 40px; }
.section-head .kicker {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--color-accent-dark);
  font-weight: 700;
  margin-bottom: 8px;
}

/* ---------- Cards / grids ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
@media (max-width: 860px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-soft);
}
.card .num {
  font-family: "Noto Serif JP", serif;
  font-size: 1.6rem;
  color: var(--color-accent);
  margin-bottom: 8px;
  display: block;
}

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow-soft); }
table.compare {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  min-width: 640px;
}
table.compare th, table.compare td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--color-line);
  text-align: left;
  font-size: 0.95rem;
}
table.compare thead th {
  background: var(--color-primary-dark);
  color: #fff;
  font-family: "Noto Serif JP", serif;
}
table.compare tbody tr:last-child td { border-bottom: none; }
table.compare td.highlight {
  background: rgba(193, 101, 47, 0.10);
  color: var(--color-ink);
  font-weight: 700;
}
table.compare thead th.highlight {
  background: var(--color-accent);
  color: #fff;
}

/* ---------- Flow ---------- */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: flow; }
@media (max-width: 960px) { .flow { grid-template-columns: 1fr; } }
.flow-step {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 22px 18px;
  position: relative;
}
.flow-step .step-no {
  font-family: "Noto Serif JP", serif;
  font-size: 1.8rem;
  color: var(--color-primary);
  opacity: 0.35;
  display: block;
  margin-bottom: 6px;
}

/* ---------- FAQ ---------- */
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 4px 22px;
  margin-bottom: 14px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  padding: 18px 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--color-primary-dark);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.3rem; color: var(--color-accent); }
.faq-item[open] summary::after { content: "–"; }
.faq-item .answer { padding-bottom: 18px; color: var(--color-ink-soft); }

/* ---------- Contact form ---------- */
.contact-panel {
  background: var(--color-primary-dark);
  color: #fff;
  border-radius: 20px;
  padding: 48px;
}
.contact-panel h2, .contact-panel p { color: #fff; }
.contact-panel .lede { color: rgba(255,255,255,0.78); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 720px) { .form-grid { grid-template-columns: 1fr; } }
.form-grid label { display: block; font-size: 0.85rem; margin-bottom: 6px; color: rgba(255,255,255,0.85); }
.form-grid input, .form-grid select, .form-grid textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: none;
  font-family: inherit;
  font-size: 0.95rem;
  background: rgba(255,255,255,0.95);
}
.form-grid textarea { min-height: 110px; resize: vertical; }
.form-note { font-size: 0.8rem; color: rgba(255,255,255,0.6); margin-top: 14px; }

/* ---------- Author box (E-E-A-T) ---------- */
.author-box {
  display: flex;
  gap: 18px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 22px;
  margin: 32px 0;
  align-items: flex-start;
}
.author-box .avatar {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--color-primary);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-family: "Noto Serif JP", serif; font-size: 1.3rem; flex-shrink: 0;
}
.author-box .meta { font-size: 0.88rem; color: var(--color-ink-soft); }
.author-box .meta strong { color: var(--color-ink); font-size: 1rem; }

/* ---------- Article ---------- */
.article-body { max-width: 72ch; }
.article-body h2 { margin-top: 2.2em; }
.article-body h3 { margin-top: 1.6em; }
.article-body .formula {
  background: var(--color-bg-alt);
  border-left: 4px solid var(--color-primary);
  padding: 14px 20px;
  font-family: "Noto Serif JP", serif;
  margin: 20px 0;
}
.article-meta {
  font-size: 0.85rem;
  color: var(--color-ink-soft);
  margin-bottom: 8px;
}
.tag-pill {
  display: inline-block;
  font-size: 0.75rem;
  background: rgba(47,85,70,0.1);
  color: var(--color-primary-dark);
  padding: 3px 12px;
  border-radius: 999px;
  margin-right: 6px;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-line);
  padding: 40px 0;
  font-size: 0.85rem;
  color: var(--color-ink-soft);
}
.site-footer .foot-grid { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
.site-footer a { color: var(--color-ink-soft); }
.disclaimer-box {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 20px 24px;
  font-size: 0.8rem;
  color: var(--color-ink-soft);
  margin-bottom: 28px;
}

.list-plain { padding-left: 1.2em; }
.list-plain li { margin-bottom: 0.5em; }

/* ---------- Scroll hint (table, mobile only) ---------- */
.scroll-hint {
  display: none;
  font-size: 0.78rem;
  color: var(--color-ink-soft);
  margin: 0 0 8px;
}

/* ---------- Responsive: header & general mobile fixes ---------- */
@media (max-width: 780px) {
  .site-header .wrap {
    flex-wrap: wrap;
    row-gap: 10px;
    padding-top: 12px;
    padding-bottom: 12px;
  }
  .brand {
    font-size: 1rem;
    flex: 1 1 auto;
    min-width: 0;
  }
  .brand small { display: none; }
  .site-nav {
    flex: 1 1 100%;
    justify-content: flex-start;
    gap: 14px;
  }
  .site-nav a:not(.btn-nav-cta) { display: none; }
  .btn-nav-cta {
    padding: 9px 16px;
    font-size: 0.9rem;
  }
  .hero { padding: 48px 0 40px; }
  section { padding: 44px 0; }
  .scroll-hint { display: block; }
  table.compare { min-width: 560px; }
  .contact-panel { padding: 32px 22px; }
}

@media (max-width: 480px) {
  .hero-badges { flex-direction: column; gap: 8px; }
  .flow { gap: 12px; }
}