/* =========================================================
   ICHIHO — 事業詳細ページ 共通スタイル
   colors_and_type.css のトークンに重ねて使用
   ========================================================= */

:root {
  --accent: var(--sunrise);
  --accent-ink: var(--sunrise-ink);
}
.page--ec      { --accent: var(--sunrise); --accent-ink: var(--sunrise-ink); }
.page--reuse   { --accent: var(--indigo);  --accent-ink: var(--indigo-ink); }
.page--support { --accent: var(--tea);     --accent-ink: #3F5C36; }

html { scroll-behavior: smooth; scroll-padding-top: 64px; }
body { overflow-x: hidden; }
.anchor--mute { color: var(--mute); }

/* =========================================================
   Header (shared, with 事業内容 dropdown)
   ========================================================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244, 246, 249, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
/* 2段組みワードマーク（上:英字bold / 下:正式社名）— テキストのみ */
.site-header__logo {
  display: inline-flex; align-items: center;
  color: var(--indigo-ink); white-space: nowrap;
}
.site-header__logo-txt { display: flex; flex-direction: column; gap: 3px; line-height: 1; }
.site-header__logo-mark {
  font-family: var(--font-en); font-size: 20px; font-weight: 700;
  letter-spacing: 0.16em; color: var(--indigo-ink);
}
.site-header__logo-name {
  font-size: 11px; font-weight: 400; letter-spacing: 0.02em; color: var(--indigo-ink);
}
.site-header__nav { display: none; gap: 28px; align-items: center; }
.site-header__nav > a, .nav-dd__trigger {
  font-size: 14px; color: var(--ink-2); font-weight: 500;
  position: relative; padding: 4px 0;
  white-space: nowrap;
  transition: color var(--dur-micro) var(--ease);
  background: none; border: 0; cursor: pointer; font-family: var(--font-jp);
  display: inline-flex; align-items: center; gap: 5px;
}
.site-header__nav > a:hover, .nav-dd__trigger:hover { color: var(--ink); }
.site-header__nav > a.is-active, .nav-dd__trigger.is-active { color: var(--ink); }

/* dropdown */
.nav-dd { position: relative; }
.nav-dd__chev { transition: transform var(--dur-state) var(--ease); }
.nav-dd:hover .nav-dd__chev, .nav-dd.is-open .nav-dd__chev { transform: rotate(180deg); }
.nav-dd__menu {
  position: absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 280px;
  background: var(--cloud);
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  box-shadow: var(--shadow-3);
  padding: 8px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--dur-state) var(--ease), transform var(--dur-state) var(--ease), visibility var(--dur-state);
  z-index: 60;
}
.nav-dd:hover .nav-dd__menu, .nav-dd.is-open .nav-dd__menu {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0);
}
.nav-dd--right .nav-dd__menu { left: auto; right: 0; transform: translateX(0) translateY(8px); }
.nav-dd--right.is-open .nav-dd__menu, .nav-dd--right:hover .nav-dd__menu { transform: translateX(0) translateY(0); }
.nav-dd__menu::before {
  content: ""; position: absolute; top: -16px; left: 0; right: 0; height: 16px;
}
.nav-dd__item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px; border-radius: var(--r-2);
  transition: background var(--dur-micro) var(--ease);
}
.nav-dd__item:hover { background: var(--paper-2); }
.nav-dd__item.is-active { background: var(--paper-2); }
.nav-dd__dot { width: 8px; height: 8px; border-radius: var(--r-full); flex-shrink: 0; }
.nav-dd__dot--ec { background: var(--sunrise); }
.nav-dd__dot--reuse { background: var(--indigo); }
.nav-dd__dot--support { background: var(--tea); }
.nav-dd__txt { display: flex; flex-direction: column; gap: 2px; }
.nav-dd__txt-jp { font-size: 14px; font-weight: 500; color: var(--ink); }
.nav-dd__txt-en { font-family: var(--font-en); font-size: 11px; letter-spacing: 0.14em; color: var(--mute); text-transform: uppercase; }
.nav-dd__sep { height: 1px; background: var(--line); margin: 6px 8px; }
.nav-dd__top {
  display: block; padding: 10px 14px; border-radius: var(--r-2);
  font-size: 13px; color: var(--mute); font-weight: 500;
}
.nav-dd__top:hover { background: var(--paper-2); color: var(--ink-2); }

.site-header__cta { display: none; gap: 8px; }
.site-header__burger { display: flex; flex-direction: column; gap: 5px; padding: 8px; background: none; border: 0; }
.site-header__burger span { width: 18px; height: 1.5px; background: var(--ink); display: block; }

.site-header__drawer {
  display: none; flex-direction: column;
  padding: 8px 24px 20px; border-bottom: 1px solid var(--line); background: var(--paper);
}
.site-header__drawer.is-open { display: flex; }
.site-header__drawer a { padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--ink); font-weight: 500; }
.site-header__drawer .drawer-sub { padding-left: 16px; font-size: 14px; color: var(--ink-2); }
.site-header__drawer a.btn { margin-top: 12px; border-bottom: 0; align-self: flex-start; }
@media (min-width: 880px) {
  .site-header__nav { display: flex; }
  .site-header__cta { display: flex; }
  .site-header__burger { display: none; }
  .site-header__drawer { display: none !important; }
}

/* =========================================================
   Detail hero
   ========================================================= */
.dhero { position: relative; overflow: hidden; padding: 56px 0 64px; background: var(--paper); }
/* フラットな薄いブルーのグラデーション（装飾パターンは使わない） */
.dhero__pattern {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(31, 61, 107, 0.05) 0%, rgba(31, 61, 107, 0) 100%);
  pointer-events: none;
}
.dhero__inner { position: relative; display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center; }
.dhero__crumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--mute); margin-bottom: 22px; }
.dhero__crumb a { color: var(--mute); }
.dhero__crumb a:hover { color: var(--ink-2); }
.dhero__head-row { display: flex; align-items: center; gap: 18px; margin-bottom: 22px; }
.dhero__no { font-family: var(--font-en); font-size: 13px; letter-spacing: 0.14em; color: var(--accent-ink); font-weight: 500; }
.dhero__logo { height: 64px; width: auto; }
.dhero__title {
  font-family: var(--font-serif); font-weight: 400;
  font-size: clamp(34px, 5vw, 54px); line-height: 1.2; color: var(--ink);
  margin: 0 0 20px; letter-spacing: 0.005em;
}
.dhero__tagline { color: var(--accent-ink); }
.dhero__lead { color: var(--ink-2); max-width: 34em; margin: 0 0 32px; }
.dhero__cta { display: flex; gap: 12px; flex-wrap: wrap; }
.dhero__card {
  background: var(--cloud); border: 1px solid var(--line); border-radius: var(--r-4);
  box-shadow: var(--shadow-1); padding: 28px; display: flex; flex-direction: column; gap: 4px;
}
.dhero__card-row {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  padding: 16px 0; border-bottom: 1px solid var(--line);
}
.dhero__card-row:last-child { border-bottom: 0; padding-bottom: 0; }
.dhero__card-row:first-child { padding-top: 0; }
.dhero__card-k { font-size: 13px; color: var(--mute); font-weight: 500; }
.dhero__card-v { font-size: 15px; color: var(--ink); font-weight: 500; text-align: right; }
.dhero__card-v .num { font-family: var(--font-en); }
@media (min-width: 880px) {
  .dhero { padding: 64px 0 80px; }
  .dhero__inner { grid-template-columns: 1.15fr 0.85fr; gap: 64px; }
}

/* =========================================================
   Generic detail section
   ========================================================= */
.dsection { padding: 64px 0; }
.dsection--alt { background: var(--paper-2); }
.dsection--ink { background: var(--ink); color: var(--paper); position: relative; overflow: hidden; }
.dsection--ink::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(107, 155, 209, 0.16) 0%, rgba(107, 155, 209, 0) 62%);
  pointer-events: none;
}
.dsection--ink .container { position: relative; z-index: 1; }
.dsection--ink .anchor { color: var(--sky); }

.dhead { max-width: 720px; margin-bottom: 44px; position: relative; }
.dhead::before {
  content: ""; display: block;
  width: 44px; height: 3px; border-radius: 2px;
  background: var(--accent); margin-bottom: 22px;
}
.dsection--ink .dhead::before { background: var(--sky); }
.dhead__row { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.dhead__num { font-family: var(--font-en); font-size: 12px; letter-spacing: 0.16em; color: var(--mute); font-weight: 500; }
.dhead .anchor { color: var(--accent); }
.dsection--ink .dhead .anchor { color: var(--sky); }
.dhead__jp { margin: 0 0 18px; font-weight: 500; }
.dsection--ink .dhead__jp { color: var(--paper); }
.dhead__sub { margin: 0; color: var(--ink-2); }
.dsection--ink .dhead__sub { color: rgba(244,246,249,0.74); }

/* feature grid */
/* 強みカード。スマホ 1 列 → タブレット 2 列 → デスクトップは横一列 4 カラム。 */
.feat-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 640px) { .feat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .feat-grid { grid-template-columns: repeat(4, 1fr); gap: 24px; } }
.feat {
  background: var(--cloud); border: 1px solid var(--line); border-radius: var(--r-3);
  padding: 30px 28px; display: flex; flex-direction: column; gap: 12px;
  transition: box-shadow var(--dur-state) var(--ease), transform var(--dur-state) var(--ease);
}
.feat:hover { box-shadow: var(--shadow-2); transform: translateY(-2px); }
.feat__icon { width: 112px; height: 112px; margin-bottom: 6px; }
.feat__no { font-family: var(--font-en); font-size: 12px; letter-spacing: 0.14em; color: var(--accent); font-weight: 600; }
.feat__t { margin: 0; font-size: 18px; font-weight: 500; color: var(--ink); }
.feat__d { margin: 0; color: var(--ink-2); font-size: 15px; line-height: 1.85; }

/* numbered steps (flow) */
.flow { display: grid; grid-template-columns: 1fr; gap: 16px; counter-reset: f; }
@media (min-width: 880px) { .flow { grid-template-columns: repeat(var(--flow-cols, 3), 1fr); gap: 20px; } }
.flow__item {
  border: 1px solid var(--line); border-radius: var(--r-3); padding: 28px;
  display: flex; flex-direction: column; gap: 10px; background: var(--cloud);
}
.dsection--ink .flow__item { background: rgba(244,246,249,0.05); border-color: rgba(244,246,249,0.14); }
.flow__no { font-family: var(--font-en); font-size: 12px; letter-spacing: 0.12em; color: var(--accent); font-weight: 600; }
.dsection--ink .flow__no { color: var(--sky); }
.flow__t { margin: 0; font-size: 17px; font-weight: 500; color: var(--ink); }
.dsection--ink .flow__t { color: var(--paper); }
.flow__d { margin: 0; font-size: 14px; color: var(--ink-2); line-height: 1.8; }
.dsection--ink .flow__d { color: rgba(244,246,249,0.74); }

/* chips (channels / categories) */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 18px; border: 1px solid var(--line); border-radius: var(--r-2);
  background: var(--cloud); font-size: 14px; font-weight: 500; color: var(--ink);
}
.chip__en { font-family: var(--font-en); color: var(--accent); font-size: 12px; letter-spacing: 0.08em; }

/* two-column prose */
.prose-2 { display: grid; grid-template-columns: 1fr; gap: 24px; max-width: 760px; }
.prose-2 p { margin: 0; color: var(--ink-2); font-size: 16px; line-height: 1.95; }
.prose-2 strong { color: var(--ink); font-weight: 500; }
@media (min-width: 760px) { .prose-2 { grid-template-columns: 1fr 1fr; gap: 40px; } }

/* category cards */
.cat-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 640px) { .cat-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 980px) { .cat-grid { grid-template-columns: repeat(4, 1fr); } }
.cat {
  border: 1px solid var(--line); border-radius: var(--r-3); padding: 24px; background: var(--cloud);
  display: flex; flex-direction: column; gap: 8px;
}
.cat__t { font-size: 16px; font-weight: 500; color: var(--ink); margin: 0; }
.cat__d { font-size: 13px; color: var(--mute); margin: 0; line-height: 1.7; }

/* =========================================================
   CTA band
   ========================================================= */
.cta-band { background: var(--accent); color: var(--paper); }
.page--support .cta-band { color: var(--paper); }
.cta-band__inner {
  display: grid; grid-template-columns: 1fr; gap: 28px; align-items: center;
  padding: 64px 0;
}
.cta-band__head { font-family: var(--font-serif); font-weight: 400; font-size: clamp(26px, 3.4vw, 38px); line-height: 1.4; margin: 0 0 12px; color: var(--paper); }
.cta-band__sub { margin: 0; color: rgba(255,255,255,0.85); font-size: 16px; line-height: 1.8; }
.cta-band__btns { display: flex; flex-direction: column; gap: 12px; }
.cta-band .btn { background: var(--cloud); color: var(--ink); border-color: var(--cloud); }
.cta-band .btn:hover { background: var(--paper); }
.cta-band .btn--line { background: var(--tea); color: var(--paper); border-color: transparent; }
.cta-band .btn--line:hover { background: #4d6b42; }
.cta-band .btn--tel {
  background: transparent; color: var(--paper); border: 1px solid rgba(255,255,255,0.5);
  display: flex; flex-direction: column; gap: 2px; align-items: flex-start; padding: 14px 22px;
}
.cta-band .btn--tel:hover { background: rgba(255,255,255,0.12); }
.cta-band .btn--tel .t-sub { font-size: 12px; opacity: 0.85; font-weight: 400; }
.cta-band .btn--tel .t-num { font-family: var(--font-en); font-size: 20px; font-weight: 700; }
@media (min-width: 820px) {
  .cta-band__inner { grid-template-columns: 1.4fr auto; gap: 48px; }
  .cta-band__btns { flex-direction: row; align-items: center; }
}

/* =========================================================
   Footer (shared)
   ========================================================= */
.site-footer { background: var(--ink); color: var(--paper); padding: 72px 0 32px; }
.site-footer__inner {
  display: grid; grid-template-columns: 1fr; gap: 48px;
  padding-bottom: 48px; border-bottom: 1px solid rgba(229,224,214,0.12);
}
.site-footer__brand { display: flex; gap: 16px; align-items: flex-start; }
.site-footer__brand img { filter: brightness(0) invert(1); opacity: 0.85; }
.site-footer__name { font-size: 16px; font-weight: 500; color: var(--paper); margin-bottom: 6px; }
.site-footer .small, .site-footer .micro { color: rgba(244,246,249,0.55); }
.site-footer__tagline { margin-top: 8px; }
.site-footer__cols { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.site-footer__col { display: flex; flex-direction: column; gap: 12px; }
.site-footer__col .anchor { color: var(--sky); margin-bottom: 4px; }
.site-footer__col a { color: rgba(244,246,249,0.85); font-size: 14px; transition: color var(--dur-micro) var(--ease); }
.site-footer__col a:hover { color: var(--paper); }
.site-footer__base { display: flex; flex-direction: column; gap: 8px; justify-content: space-between; padding-top: 24px; }
@media (min-width: 720px) { .site-footer__base { flex-direction: row; align-items: center; } }
@media (min-width: 880px) {
  .site-footer__inner { grid-template-columns: 1.3fr 1.4fr; gap: 64px; }
  .site-footer__cols { grid-template-columns: repeat(2, 1fr); gap: 48px; }
}

.tag--support { background: var(--tea); color: var(--paper); border-color: transparent; }

/* =========================================================
   Contact page (お問い合わせ.html)
   ========================================================= */
.cpage { position: relative; overflow: hidden; padding: 56px 0 80px; background: var(--paper); }
.cpage__pattern {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(31, 61, 107, 0.05) 0%, rgba(31, 61, 107, 0) 70%);
  pointer-events: none;
}
.cpage__inner { position: relative; display: grid; grid-template-columns: 1fr; gap: 40px; align-items: start; }
.cpage__title { font-family: var(--font-serif); font-weight: 400; font-size: clamp(34px, 5vw, 52px); line-height: 1.2; color: var(--ink); margin: 14px 0 20px; }
.cpage__lead { color: var(--ink-2); margin: 0 0 32px; max-width: 32em; }
/* TEL / LINE / MAIL / ADDRESS の 4 枚。左カラムが狭いので PC でも 2×2 を保つ。 */
.cpage__direct { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.cpage__cross {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  margin-top: 22px; padding: 16px 20px;
  border: 1px solid var(--line); border-radius: var(--r-3); background: var(--cloud);
  color: var(--indigo);
  transition: background var(--dur-micro) var(--ease), border-color var(--dur-micro) var(--ease);
}
.cpage__cross:hover { background: var(--paper-2); border-color: var(--indigo); color: var(--indigo-ink); }
.cpage__cross-txt { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.cpage__cross-sub { font-family: var(--font-en); font-size: 11px; letter-spacing: 0.12em; color: var(--mute); }
.cpage__cross-label { font-size: 14px; font-weight: 500; }
.cpage__cross svg { flex: 0 0 auto; transition: transform var(--dur-micro) var(--ease); }
.cpage__cross:hover svg { transform: translateX(3px); }
.cpage__direct-card {
  display: flex; flex-direction: column; gap: 5px;
  background: var(--cloud); border: 1px solid var(--line); border-radius: var(--r-3);
  padding: 18px 18px 16px;
  min-width: 0;
}
.cpage__direct-icon { width: 34px; height: 34px; margin-bottom: 4px; }
.cpage__direct-card--link { transition: box-shadow var(--dur-state) var(--ease), transform var(--dur-state) var(--ease), border-color var(--dur-micro) var(--ease); }
.cpage__direct-card--link:hover { box-shadow: var(--shadow-2); transform: translateY(-2px); border-color: var(--indigo); }
.cpage__direct-val { font-family: var(--font-en); font-size: 20px; font-weight: 600; color: var(--ink); letter-spacing: -0.01em; }
.cpage__direct-addr { font-size: 14px; font-weight: 500; color: var(--ink); overflow-wrap: anywhere; }
.cpage__direct-sub { color: var(--mute); }
.cpage__formwrap { min-width: 0; }
.cpage__form { box-shadow: var(--shadow-1); }
.cpage__privacy { color: var(--mute); margin: 0; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; }
.cpage__privacy-link { color: var(--indigo); font-weight: 500; white-space: nowrap; }
.cpage__privacy-link:hover { color: var(--indigo-ink); }
.contact__count { align-self: flex-end; margin-top: 6px; color: var(--mute); }
.cpage__thanks-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
@media (min-width: 880px) {
  .cpage { padding: 64px 0 96px; }
  .cpage__inner { grid-template-columns: 0.85fr 1.15fr; gap: 64px; }
  .cpage__direct { gap: 14px; }
}

/* 送信完了ページ（thanks.html） */
.thanks { padding: 80px 0 120px; }
.thanks__inner { position: relative; max-width: 720px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 22px; }
.thanks__head {
  font-family: var(--font-serif); font-weight: 400;
  font-size: clamp(28px, 4.6vw, 44px); line-height: 1.34; color: var(--ink); margin: 0;
}
.thanks__body { color: var(--ink-2); margin: 0; }
.thanks__body a { color: var(--indigo); font-weight: 500; white-space: nowrap; }
.thanks__cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 6px; }
@media (max-width: 640px) {
  .thanks { padding: 48px 0 72px; }
  .thanks__cta { width: 100%; }
  .thanks__cta .btn { width: 100%; justify-content: center; min-height: 50px; }
}

/* form controls (mirrors design-system contact form) */
.label { display: block; font-size: 14px; font-weight: 500; color: var(--ink-2); margin-bottom: 8px; }
.label-req { font-size: 11px; color: var(--danger); font-weight: 500; margin-left: 4px; }
.label-opt { font-size: 11px; color: var(--mute); font-weight: 500; margin-left: 4px; }
.input, .textarea {
  width: 100%; box-sizing: border-box;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-1);
  padding: 13px 15px; font-family: var(--font-jp); font-size: 15px; color: var(--ink);
  transition: border-color var(--dur-micro) var(--ease), box-shadow var(--dur-micro) var(--ease);
}
.input:focus, .textarea:focus {
  outline: none; border-color: var(--indigo);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--indigo) 20%, transparent);
}
.textarea { min-height: 130px; resize: vertical; line-height: 1.7; }
.contact__form {
  display: flex; flex-direction: column; gap: 18px;
  background: var(--cloud); border: 1px solid var(--line); border-radius: var(--r-4); padding: 32px;
}
.contact__form-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.field { display: flex; flex-direction: column; }
.field-row { display: grid; grid-template-columns: 1fr; gap: 18px; }
@media (min-width: 640px) { .field-row { grid-template-columns: 1fr 1fr; } }
.contact__topic { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
@media (min-width: 640px) { .contact__topic { display: flex; flex-wrap: wrap; } }
.contact__topic-opt {
  display: inline-flex; align-items: center; justify-content: center; text-align: center;
  line-height: 1.5; padding: 9px 14px;
  border: 1px solid var(--line); border-radius: var(--r-full); background: var(--paper);
  color: var(--ink-2); font-size: 13px; font-weight: 500; cursor: pointer;
  transition: all var(--dur-micro) var(--ease);
}
.contact__topic-opt input { position: absolute; opacity: 0; pointer-events: none; }
.contact__topic-opt:hover { border-color: var(--ink-2); color: var(--ink); }
.contact__topic-opt.is-on { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.contact__items { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
@media (min-width: 640px) { .contact__items { display: flex; flex-wrap: wrap; } }
.contact__item-opt {
  display: inline-flex; align-items: center; justify-content: center; text-align: center;
  line-height: 1.5; padding: 9px 14px;
  border: 1px solid var(--line); border-radius: var(--r-2); background: var(--paper);
  color: var(--ink-2); font-size: 13px; font-weight: 500; cursor: pointer;
  transition: all var(--dur-micro) var(--ease);
}
.contact__item-opt:hover { border-color: var(--ink-2); color: var(--ink); }
.contact__item-opt input { position: absolute; opacity: 0; pointer-events: none; }
.contact__item-opt:has(input:checked) { background: var(--indigo); color: var(--paper); border-color: var(--indigo); }
.contact__item-opt:has(input:focus-visible) { box-shadow: 0 0 0 3px color-mix(in oklab, var(--indigo) 22%, transparent); }
.contact__topic-opt:has(input:focus-visible) { box-shadow: 0 0 0 3px color-mix(in oklab, var(--indigo) 22%, transparent); }
.contact__submit { align-self: flex-start; margin-top: 4px; }
.contact__submit[disabled] { opacity: 0.6; cursor: progress; }
.contact__thanks { padding: 12px 4px; display: flex; flex-direction: column; gap: 14px; align-items: flex-start; }
.contact__thanks-head { margin: 0; }
.contact__thanks-body { margin: 0; color: var(--ink-2); }

/* =========================================================
   Mobile hardening (≤ 640px) — detail + contact pages
   ========================================================= */
@media (max-width: 640px) {
  .site-header__inner { gap: 12px; }
  .site-header__logo-mark { font-size: 17px; letter-spacing: 0.14em; }
  .site-header__logo-name { font-size: 10px; }
  .site-header__drawer a { padding: 15px 0; }
  .site-header__burger { padding: 10px; }

  /* detail hero */
  .dhero { padding: 28px 0 48px; }
  .dhero__inner { gap: 32px; }
  .dhero__head-row { gap: 14px; margin-bottom: 18px; }
  .dhero__logo { height: 52px; }
  .dhero__lead { margin-bottom: 26px; }
  .dhero__cta { gap: 10px; }
  .dhero__cta .btn { flex: 1 1 auto; justify-content: center; min-height: 48px; }
  .dhero__card { padding: 22px; }
  .dhero__card-v { font-size: 14px; }

  /* sections */
  .dsection { padding: 48px 0; }
  .dhead { margin-bottom: 32px; }
  .feat { padding: 26px 22px; }
  .flow__item { padding: 24px 22px; }

  /* CTA band */
  .cta-band__inner { padding: 48px 0; gap: 22px; }
  .cta-band__btns { width: 100%; }
  .cta-band__btns .btn { width: 100%; justify-content: center; min-height: 48px; }
  .cta-band .btn--tel { align-items: center; }

  /* contact page */
  .cpage { padding: 28px 0 56px; }
  .cpage__inner { gap: 32px; }
  .cpage__title { font-size: clamp(30px, 8vw, 40px); }
  .cpage__direct-val { font-size: 18px; }
  .cpage__form { padding: 24px 18px; }
  .contact__form { padding: 24px 20px; border-radius: var(--r-3); }
  .contact__submit { width: 100%; justify-content: center; min-height: 50px; }
  .contact__topic-opt { padding: 11px 14px; }
}