/* ==========================================================================
   components.css — ヘッダー・ドロワー・ボタン・フッター
   ========================================================================== */

/* --- ヘッダー -------------------------------------------------------- */

.hd {
  position: fixed; top: 0; left: 0; right: 0; z-index: 120;
  display: flex; align-items: center; height: var(--h-header);
  background: rgba(247,244,238,0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .5s var(--ease);
}
.hd.on { border-bottom-color: var(--keisen); }

.hd__in {
  width: 100%; max-width: 1120px; margin-inline: auto; padding-inline: 28px;
  display: flex; align-items: center; justify-content: space-between;
}

.brand { display: inline-flex; align-items: baseline; gap: 12px; min-height: 44px; align-content: center; flex-wrap: wrap; }
.brand > * { align-self: center; }
.brand b { font-family: var(--mincho); font-size: 19px; font-weight: 600; letter-spacing: 0.22em; }
.brand span { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.26em; color: var(--sumi-5); }

.nav { display: none; gap: 26px; align-items: center; }
.nav__group { position: relative; }
.nav a {
  position: relative; display: flex; align-items: center;
  min-height: 44px; padding-inline: 4px;
  font-size: 13px; color: var(--sumi-3);
  transition: color .35s var(--ease);
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--sumi); }
.nav a::after {
  content: ""; position: absolute; left: 4px; right: 4px; bottom: 10px;
  height: 1px; background: var(--sumi);
  transform: scaleX(0); transition: transform .4s var(--ease);
}
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav__submenu {
  position: absolute; top: calc(100% - 2px); left: -16px;
  width: max-content; min-width: 232px; padding: 8px 12px;
  background: var(--kinari); border: 1px solid var(--keisen);
  box-shadow: 0 14px 28px rgba(28, 26, 23, 0.08);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s;
}
.nav__group:hover .nav__submenu, .nav__group:focus-within .nav__submenu {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav__submenu a { min-height: 42px; white-space: nowrap; }
.nav__submenu a::after { bottom: 6px; }
@media (min-width: 900px) { .nav { display: flex; } }

.burger {
  width: 48px; height: 48px; margin-right: -12px;
  display: grid; place-items: center;
  background: none; border: 0; cursor: pointer; position: relative;
}
.burger__bar { display: block; width: 22px; height: 1.5px; background: var(--sumi);
  transition: transform .45s var(--ease), opacity .3s var(--ease); }
.burger__bar + .burger__bar { margin-top: 6px; }
.burger[aria-expanded="true"] .burger__bar:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.burger[aria-expanded="true"] .burger__bar:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] .burger__bar:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
@media (min-width: 900px) { .burger { display: none; } }

/* --- ドロワー ---------------------------------------------------------- */

.drawer {
  position: fixed; inset: 0; z-index: 100; background: var(--kinari);
  padding: calc(var(--h-header) + 32px) 28px 40px; overflow-y: auto;
  opacity: 0; visibility: hidden;
  transition: opacity .45s var(--ease), visibility .45s;
}
.drawer.on { opacity: 1; visibility: visible; }
.drawer a {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  min-height: 60px; padding-block: 14px;
  border-bottom: 1px solid var(--keisen);
  font-family: var(--mincho); font-size: 1.15rem; letter-spacing: 0.06em;
}
.drawer a small { font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; color: var(--sumi-5); }
.drawer__group { border-bottom: 1px solid var(--keisen); }
.drawer__row { display: flex; align-items: stretch; }
.drawer__row > a { flex: 1; border-bottom: 0; }
.drawer__sub-toggle {
  width: 52px; flex: 0 0 52px; border: 0; border-left: 1px solid var(--keisen);
  background: transparent; color: var(--sumi); cursor: pointer; position: relative;
}
.drawer__sub-toggle::before, .drawer__sub-toggle::after {
  content: ""; position: absolute; top: 50%; left: 50%; width: 11px; height: 1px;
  background: currentColor; transition: transform .3s var(--ease);
}
.drawer__sub-toggle::before { transform: translate(-50%, -50%); }
.drawer__sub-toggle::after { transform: translate(-50%, -50%) rotate(90deg); }
.drawer__sub-toggle[aria-expanded="true"]::after { transform: translate(-50%, -50%) rotate(0); }
.drawer__sub { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .35s var(--ease); }
.drawer__sub.on { grid-template-rows: 1fr; }
.drawer__sub > div { min-height: 0; overflow: hidden; }
.drawer__sub a {
  min-height: 56px; padding: 12px 16px 12px 24px; border-top: 1px solid var(--keisen);
  font-family: var(--gothic); font-size: 14px; color: var(--sumi-3);
}
@media (min-width: 900px) { .drawer { display: none; } }

/* --- ボタン（墨がにじむように塗りが左から広がる） ------------------------ */

.btns { display: flex; flex-wrap: wrap; gap: 14px; }

.btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 0 34px;
  font-size: 13.5px; letter-spacing: 0.05em;
  border: 1px solid var(--sumi);
  overflow: hidden; isolation: isolate;
  transition: border-color .55s var(--ease);
}
.btn::before {
  content: ""; position: absolute; inset: 0;
  transform: scaleX(0); transform-origin: left center;
  transition: transform .55s var(--ease); z-index: 0;
}
.btn__label { position: relative; z-index: 1; transition: color .5s var(--ease); }

.btn--fill { background: var(--sumi); color: var(--kinari); }
.btn--fill::before { background: var(--shu); }
.btn--fill:hover { border-color: var(--shu); }
.btn--fill:hover::before { transform: scaleX(1); }

.btn--line { color: var(--sumi); }
.btn--line::before { background: var(--sumi); }
.btn--line:hover::before { transform: scaleX(1); }
.btn--line:hover .btn__label { color: var(--kinari); }

/* 法人向けページでの塗り差し替え（藍） */
.btn--ai.btn--fill { background: var(--ai); border-color: var(--ai); }
.btn--ai.btn--fill::before { background: var(--shu); }

/* --- フッター ------------------------------------------------------------ */

.ft { border-top: 1px solid var(--keisen); padding-block: 72px 40px; }

.ft__grid { display: grid; gap: 48px; margin-bottom: 56px; }
@media (min-width: 768px) { .ft__grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }

.ft__desc { color: var(--sumi-3); font-size: 13px; margin-top: 18px; max-width: 30ch; line-height: 1.95; }

.ft__head { font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; color: var(--sumi-5); margin-bottom: 16px; }
.ft__list { display: flex; flex-direction: column; }
.ft__list a { display: flex; align-items: center; min-height: 44px; font-size: 13px; color: var(--sumi-3); transition: color .3s var(--ease); }
.ft__list a:hover { color: var(--sumi); }

.ft__bottom {
  border-top: 1px solid var(--keisen); padding-top: 24px;
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center;
}
.ft__c { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; color: var(--sumi-5); }

/* --- パンくず（サブページ共通） ------------------------------------------- */

.crumb {
  padding-top: calc(var(--h-header) + 56px);
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; color: var(--sumi-5);
}
.crumb a { min-height: 44px; display: inline-flex; align-items: center; transition: color .3s var(--ease); }
.crumb a:hover { color: var(--sumi); }

/* --- サブページ用ページヘッダー ------------------------------------------- */

.p-head { padding-block: 28px 88px; }
.p-head__label { margin-bottom: 22px; }
.p-head h1 {
  font-family: var(--mincho); font-weight: 600;
  font-size: clamp(1.7rem, 4vw, 3rem);
  line-height: 1.7; letter-spacing: 0.03em;
  position: relative; z-index: 1;
  /* 和文は1文字がchの約2倍幅のため、15chでは語中改行が起きる。
     行の折り返しは見出し内の<br>で明示的に制御する */
  word-break: keep-all; overflow-wrap: anywhere;
}
.p-head__lead { margin-top: 28px; max-width: 46ch; font-size: 15px; line-height: 2.05; position: relative; z-index: 1; }

/* --- カード（サブページ共通の情報ブロック） ------------------------------- */

.card {
  border: 1px solid var(--keisen); padding: 36px 32px;
  transition: background-color .5s var(--ease), border-color .5s var(--ease);
}
a.card:hover { background: var(--kinari-2); border-color: var(--sumi-5); }
.card__label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; color: var(--sumi-5); display: block; margin-bottom: 20px; }
.card__title {
  font-family: var(--mincho); font-weight: 500; font-size: 1.2rem;
  letter-spacing: 0.04em; line-height: 1.7; margin-bottom: 16px;
}
.card__body { font-size: 13.5px; color: var(--sumi-3); line-height: 1.95; }

/* --- 注記ボックス（準備中・免責等） --------------------------------------- */

.notice {
  border: 1px solid var(--keisen); background: var(--kinari-2);
  padding: 28px 30px; font-size: 13.5px; color: var(--sumi-3); line-height: 1.95;
}
.notice strong { color: var(--sumi); font-weight: 500; }

/* --- 強調（墨だまり・かすれ罫）--------------------------------------------
   運用規則：墨だまりは1ページに1箇所（最上位の対比語のみ）。
   本文中の中位の強調にはかすれ罫を使う。それ以外は太字と色のみ。 */

.ink { position: relative; display: inline-block; }
.ink > span { position: relative; z-index: 1; }
.ink::before {
  content: ""; position: absolute; left: -0.14em; right: -0.14em; bottom: -0.06em;
  height: 62%; z-index: 0; filter: blur(2.5px);
}
.ink--shu::before { background: radial-gradient(58% 100% at 46% 100%, rgba(175,63,42,.30), rgba(175,63,42,.13) 58%, transparent 84%); }
.ink--ai::before { background: radial-gradient(58% 100% at 54% 100%, rgba(30,63,92,.30), rgba(30,63,92,.13) 58%, transparent 84%); }

.brush { padding-bottom: 0.16em; background-repeat: no-repeat; background-size: 100% 1.7px; background-position: 0 100%; }
.brush--shu { background-image: linear-gradient(90deg, rgba(175,63,42,0) 0%, rgba(175,63,42,.9) 5%, var(--shu) 42%, rgba(175,63,42,.85) 72%, rgba(175,63,42,.28) 92%, rgba(175,63,42,0) 100%); }
.brush--ai { background-image: linear-gradient(90deg, rgba(30,63,92,0) 0%, rgba(30,63,92,.9) 5%, var(--ai) 42%, rgba(30,63,92,.85) 72%, rgba(30,63,92,.28) 92%, rgba(30,63,92,0) 100%); }