/* ============================================================
   補助金インデックス ブランドサイト
   コンセプト: 「制度の台帳」— 和紙の色、藍の文字、朱の印。
   信頼できる一次情報の索引らしい、静かで確かなエディトリアル。
   ============================================================ */

:root {
  --paper: #faf7f0;        /* 和紙 */
  --paper-deep: #f2ede1;   /* 帯・背景の一段濃い和紙 */
  --ink: #1c2433;          /* 藍鉄 — 本文の黒に近い藍 */
  --ink-soft: #4a5468;
  --muted: #79746a;
  --line: #d9d2c0;         /* 罫線 */
  --line-strong: #1c2433;
  --vermilion: #bf3b2f;    /* 朱 — 印章・強調 */
  --vermilion-deep: #a02f25;
  --ok: #2f6b4f;
  --max: 1080px;
  --doc: 760px;
  --serif: "Shippori Mincho B1", "Noto Serif JP", "Hiragino Mincho ProN", serif;
  --sans: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(191, 59, 47, 0.05), transparent 60%),
    var(--paper);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(191, 59, 47, 0.18); }

a { color: inherit; }

img { max-width: 100%; }

/* ---------- 共通レイアウト ---------- */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.doc  { max-width: var(--doc);  margin: 0 auto; padding: 0 24px; }

/* ---------- ヘッダー ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand .seal {
  width: 30px;
  height: 30px;
  background: var(--vermilion);
  color: #fdf9f0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 15px;
  display: grid;
  place-items: center;
  border-radius: 4px;
  box-shadow: 0 1px 0 rgba(28, 36, 51, 0.25);
}

.brand .name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.06em;
}

.brand .name small {
  display: block;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--muted);
}

.global-nav { display: flex; gap: 28px; align-items: center; }

.global-nav a {
  text-decoration: none;
  font-size: 14px;
  color: var(--ink-soft);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}

.global-nav a:hover { color: var(--vermilion); border-bottom-color: var(--vermilion); }

@media (max-width: 720px) {
  .global-nav { display: none; }
}

/* ---------- ヒーロー ---------- */
.hero { padding: 88px 0 72px; position: relative; overflow: hidden; }

.hero .kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--vermilion);
  font-weight: 700;
  margin-bottom: 22px;
}

.hero .kicker::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--vermilion);
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(34px, 5.6vw, 56px);
  line-height: 1.45;
  letter-spacing: 0.04em;
  max-width: 21em;
}

.hero h1 .accent { color: var(--vermilion); }

.hero .lede {
  margin-top: 26px;
  max-width: 38em;
  color: var(--ink-soft);
  font-size: 16.5px;
}

.hero .actions { margin-top: 38px; display: flex; gap: 14px; flex-wrap: wrap; }

/* 段差のあるフェードイン（読み込み時のみ・控えめに） */
.hero .kicker, .hero h1, .hero .lede, .hero .actions, .hero .hero-note {
  opacity: 0;
  transform: translateY(10px);
  animation: rise 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.hero h1 { animation-delay: 0.08s; }
.hero .lede { animation-delay: 0.16s; }
.hero .actions { animation-delay: 0.24s; }
.hero .hero-note { animation-delay: 0.32s; }

@keyframes rise { to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  .hero .kicker, .hero h1, .hero .lede, .hero .actions, .hero .hero-note {
    animation: none; opacity: 1; transform: none;
  }
}

.hero .hero-note { margin-top: 26px; font-size: 12.5px; color: var(--muted); }

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-radius: 4px;
  border: 1.5px solid var(--line-strong);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-primary {
  background: var(--vermilion);
  border-color: var(--vermilion-deep);
  color: #fdf9f0;
  box-shadow: 0 2px 0 var(--vermilion-deep);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 3px 0 var(--vermilion-deep); }

.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: rgba(28, 36, 51, 0.05); }

.btn .tag {
  font-size: 10.5px;
  font-weight: 700;
  background: rgba(253, 249, 240, 0.25);
  border: 1px solid rgba(253, 249, 240, 0.5);
  border-radius: 3px;
  padding: 1px 6px;
  letter-spacing: 0.1em;
}
.btn-ghost .tag { background: rgba(28,36,51,0.06); border-color: var(--line); color: var(--ink-soft); }

/* ---------- セクション共通 ---------- */
.section { padding: 76px 0; }
.section.alt { background: var(--paper-deep); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.section-head { margin-bottom: 44px; }

.section-head .no {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--vermilion);
  font-weight: 700;
}

.section-head h2 {
  font-family: var(--serif);
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-top: 8px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line-strong);
  display: inline-block;
}

.section-head p { margin-top: 14px; color: var(--ink-soft); max-width: 40em; }

/* ---------- 機能カード（索引カード風） ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 860px) { .features { grid-template-columns: 1fr; } }

.feature {
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 3px solid var(--line-strong);
  padding: 28px 26px 26px;
  position: relative;
}

.feature .index {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.feature h3 {
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: 0.04em;
  margin: 10px 0 12px;
}

.feature p { font-size: 14.5px; color: var(--ink-soft); }

.feature .status {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--vermilion);
  border: 1px solid currentColor;
  border-radius: 3px;
  padding: 2px 8px;
  background: rgba(191, 59, 47, 0.04);
}
.feature .status.soon { color: var(--ink-soft); }

/* ---------- 信頼性（品質方針） ---------- */
.principles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (max-width: 720px) { .principles { grid-template-columns: 1fr; } }

.principle { background: var(--paper); padding: 26px 28px; }

.principle h3 {
  font-size: 15.5px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.principle h3::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--vermilion);
  border-radius: 1px;
  flex: none;
}

.principle p { font-size: 14px; color: var(--ink-soft); }

/* ---------- 料金 ---------- */
.pricing { display: grid; grid-template-columns: 1fr 1.15fr; gap: 22px; align-items: stretch; max-width: 840px; }
@media (max-width: 760px) { .pricing { grid-template-columns: 1fr; } }

.plan { border: 1.5px solid var(--line); background: var(--paper); padding: 32px 30px; display: flex; flex-direction: column; }

.plan.featured { border-color: var(--vermilion); box-shadow: 0 6px 24px rgba(191, 59, 47, 0.08); position: relative; }

.plan.featured::before {
  content: "おすすめ";
  position: absolute;
  top: -12px;
  left: 26px;
  background: var(--vermilion);
  color: #fdf9f0;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 3px 12px;
  border-radius: 3px;
}

.plan .plan-name { font-family: var(--serif); font-size: 19px; font-weight: 700; letter-spacing: 0.08em; }

.plan .price { margin: 14px 0 4px; display: flex; align-items: baseline; gap: 6px; }
.plan .price .amount { font-family: var(--serif); font-size: 40px; font-weight: 700; letter-spacing: 0.02em; }
.plan .price .unit { font-size: 13px; color: var(--muted); }
.plan .price-note { font-size: 12px; color: var(--muted); margin-bottom: 18px; }

.plan ul { list-style: none; margin: 8px 0 22px; flex: 1; }

.plan li {
  font-size: 14px;
  padding: 9px 0 9px 26px;
  border-bottom: 1px dashed var(--line);
  position: relative;
}

.plan li::before {
  content: "◆";
  position: absolute;
  left: 2px;
  font-size: 10px;
  top: 13px;
  color: var(--vermilion);
}
.plan.free li::before { color: var(--ink-soft); }

.plan .plan-cta { text-align: center; }

.pricing-note { margin-top: 22px; font-size: 12.5px; color: var(--muted); max-width: 840px; }

/* ---------- FAQ ---------- */
.faq { max-width: 840px; }

.faq details {
  border: 1px solid var(--line);
  background: var(--paper);
  margin-bottom: 12px;
}

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 22px;
  font-weight: 700;
  font-size: 15px;
  display: flex;
  gap: 14px;
  align-items: baseline;
}

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

.faq summary::before {
  content: "問";
  font-family: var(--serif);
  color: var(--vermilion);
  flex: none;
}

.faq details[open] summary { border-bottom: 1px dashed var(--line); }

.faq .answer { padding: 16px 22px 20px 52px; font-size: 14.5px; color: var(--ink-soft); }

/* ---------- フッター ---------- */
.site-footer {
  border-top: 2px solid var(--line-strong);
  background: var(--paper-deep);
  padding: 46px 0 38px;
  margin-top: 40px;
}

.site-footer .cols { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }

.site-footer .brand .name { font-size: 16px; }

.footer-nav { display: flex; gap: 22px; flex-wrap: wrap; }

.footer-nav a { font-size: 13px; color: var(--ink-soft); text-decoration: none; }
.footer-nav a:hover { color: var(--vermilion); text-decoration: underline; }

.site-footer .legal {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

.site-footer .legal p + p { margin-top: 6px; }

/* ---------- 下層ページ（文書様式） ---------- */
.doc-page { padding: 64px 0 80px; }

.doc-page .doc-head { margin-bottom: 40px; }

.doc-page .doc-head .no {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--vermilion);
  font-weight: 700;
}

.doc-page h1 {
  font-family: var(--serif);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-top: 8px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--line-strong);
}

.doc-page .updated { margin-top: 12px; font-size: 12.5px; color: var(--muted); }

.doc-page h2 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  margin: 40px 0 12px;
  padding-left: 14px;
  border-left: 3px solid var(--vermilion);
}

.doc-page p, .doc-page li { font-size: 14.5px; color: var(--ink-soft); }

.doc-page ol, .doc-page ul { padding-left: 24px; margin: 10px 0; }

.doc-page li { margin: 6px 0; }

/* 特商法テーブル */
.spec-table { width: 100%; border-collapse: collapse; border: 1px solid var(--line); background: var(--paper); }

.spec-table th, .spec-table td {
  border: 1px solid var(--line);
  padding: 14px 18px;
  font-size: 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.8;
}

.spec-table th {
  width: 30%;
  background: var(--paper-deep);
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .spec-table th { white-space: normal; width: 36%; }
}

.spec-table .note { font-size: 12.5px; color: var(--muted); }

/* 汎用 */
.mt-8 { margin-top: 8px; }
.small { font-size: 12.5px; color: var(--muted); }