/* ブランド配色と共通レイアウト。既存のリセット・フォーム用スタイルより後に読み込む */
:root {
    --brand: #bb90db;
    --brand-ink: #6b4a86;
    --brand-yellow: #ffd649;
    --brand-orange: #ff5f08;
    --ink: #333;
    --muted: #666;
    --line: #e6ddeb;
    --tint: #f8f5fa;
    --content: 1120px;
}
.corporate-site { font-family: "Noto Sans JP", sans-serif; color: var(--ink); line-height: 1.85; background: #fff; }
.corporate-site main { font-size: 16px; overflow: visible; }
.corporate-site img { max-width: 100%; }
/* ⚠ 単色のリングは «暗い背景» か «明るい背景» のどちらかで必ず 3:1 を割る
   (#6b4a86 はヒーロー写真の上で 1.54:1 だった)。白 + 暗色の二重リングにして
   どちらの背景でも縁が見えるようにする */
.corporate-site :focus-visible { outline: 3px solid #fff; outline-offset: 3px; box-shadow: 0 0 0 6px var(--brand-ink); transition: none; }
.corporate-site [id] { scroll-margin-top: 110px; }
.corporate-site [x-cloak] { display: none !important; }
.site-container { width: min(var(--content), calc(100% - 80px)); margin-inline: auto; }
.c-skip-link { position: fixed; top: -100px; left: 16px; z-index: 100; padding: 12px 20px; background: #fff; color: var(--brand-ink); }
.c-skip-link:focus { top: 8px; }
.site-header { position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid var(--line); }
.site-header__inner { width: min(1280px, calc(100% - 64px)); height: 96px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.site-logo { display: inline-flex; flex-shrink: 0; }
.site-logo img { display: block; width: 120px; height: 80px; object-fit: contain; }
.site-nav__list { display: flex; align-items: center; gap: 28px; list-style: none; padding: 0; margin: 0; font-size: 13px; font-weight: 500; }
.site-nav__list a { display: inline-block; padding-block: 10px; }
.site-nav__list a:hover, .site-nav__list a[aria-current] { color: var(--brand-ink); text-decoration: underline; text-underline-offset: 7px; }
.site-nav__list .site-nav__contact { display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; background: var(--brand); color: #2a1b36; border-radius: 3px; }
/* ⚠ a[aria-current] (0,2,1) が .site-nav__contact (0,2,0) に勝つため、
   現在地とホバーで «紫地に紫文字» (2.76:1) になっていた。ボタン側は色を据え置き、
   下線だけを手がかりにする */
.site-nav__list a.site-nav__contact:hover, .site-nav__list a.site-nav__contact[aria-current] { color: #2a1b36; background: #a87bd0; text-decoration: underline; text-underline-offset: 4px; }
.site-menu { display: none; }
.site-section { padding-block: 96px; }
.site-section--tinted { background: var(--tint); }
.eyebrow { color: var(--brand-ink); font-size: 12px; font-weight: 700; letter-spacing: .14em; line-height: 1.7; margin-bottom: 12px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 40px; }
.section-heading h2 { font-size: 34px; font-weight: 700; line-height: 1.5; letter-spacing: .06em; }
.section-heading > p { color: var(--muted); font-size: 14px; }
.site-button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 54px; padding: 15px 26px; border: 1px solid var(--brand); border-radius: 3px; background: var(--brand); color: #30203d; font-size: 14px; font-weight: 700; text-decoration: none; transition: background .2s; }
.site-button:hover { background: #d7bce9; }
.site-button--white { background: #fff; border-color: #fff; color: var(--ink); }
.site-button--outline { border-color: var(--brand); background: transparent; color: var(--brand-ink); }
.text-link { display: inline-flex; align-items: center; gap: 10px; padding-block: 12px; color: var(--brand-ink); border-bottom: 1px solid var(--brand); font-size: 14px; font-weight: 700; }
.text-link:hover { border-bottom-color: var(--brand-ink); }
.site-icon { display: inline-block; flex: 0 0 auto; width: 20px; height: 20px; vertical-align: -4px; color: var(--brand-ink); }
.works__link .site-icon { width: 17px; height: 17px; margin-right: 6px; vertical-align: -3px; }
/* ファーストビュー。背景写真と、ブランド 3 色のラインを据える */
/* ⚠ 暗幕のアルファは «見た目» ではなくコントラスト比で決めている。
   写真の明部 (木立・路面) に白文字が重なると 2.1:1 まで落ちるため、
   横方向を強め、下 1/3 にも暗幕を足している */
.hero { position: relative; background: linear-gradient(180deg, rgba(25,27,36,0) 55%, rgba(25,27,36,.36)), linear-gradient(90deg, rgba(25,27,36,.80), rgba(25,27,36,.34)), url('../img/hero-riverside.jpg') right 55% / cover; color: #fff; }
.hero::after, .contact-banner::before { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 5px; background: linear-gradient(90deg, var(--brand) 0 70%, var(--brand-yellow) 70% 88%, var(--brand-orange) 88%); }
.hero__inner { padding-block: 84px 36px; }
.hero__label { margin-bottom: 24px; font-size: 12px; letter-spacing: .16em; }
.hero h1 { font-size: clamp(30px, 3.4vw, 48px); font-weight: 700; line-height: 1.6; letter-spacing: .045em; }
.hero__description { margin-top: 24px; font-size: 16px; line-height: 2; }
.hero .site-button { margin-top: 32px; }
.hero__caption { text-align: right; margin-top: 44px; font-size: 10px; letter-spacing: .18em; }
/* 事業内容。画像 + 短い紹介文 + details で開く詳細 */
.service-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; align-items: start; }
.service-card { border: 1px solid var(--line); border-radius: 4px; overflow: hidden; }
.service-card__visual { position: relative; }
.service-card__visual img { display: block; width: 100%; height: 240px; object-fit: cover; }
.service-card__visual span { position: absolute; bottom: 0; left: 0; padding: 10px 24px; background: #fff; color: var(--brand-ink); font-size: 11px; font-weight: 700; letter-spacing: .14em; }
.service-card__body { padding: 30px 32px 32px; }
.service-card h3 { font-size: 24px; font-weight: 700; margin-bottom: 14px; }
.service-card__body > p { font-size: 14px; line-height: 2; color: var(--muted); }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.service-tags li { background: var(--tint); color: var(--brand-ink); padding: 4px 10px; font-size: 11px; }
.service-details { margin-top: 22px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 13px; }
.service-details summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 0; cursor: pointer; font-weight: 500; list-style: none; }
.service-details summary::-webkit-details-marker { display: none; }
.service-details summary::after { content: '+'; color: var(--brand-ink); font-size: 20px; }
.service-details[open] summary::after { content: '−'; }
.service-cols__feature { padding-left: 18px; margin-bottom: 18px; list-style: disc; color: var(--muted); }
.service-cols__feature li { margin-bottom: 10px; }
.service-details > p { margin-bottom: 20px; color: var(--muted); }
/* ⚠ 下線を消すとリンクの手がかりが «色» だけになる (本文 #666 との輝度差 1.24:1) */
.service-card .text-link { margin-top: 16px; }
/* 計測実績。トップの抜粋と一覧ページで WorkList を唯一の情報源にしている */
.work-preview { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.work-preview li { padding: 30px 28px; border-right: 1px solid var(--line); }
.work-preview li:first-child { padding-left: 0; }
.work-preview li:last-child { border: 0; padding-right: 0; }
.work-preview__meta { display: flex; align-items: center; gap: 16px; font-size: 14px; color: var(--muted); }
.corporate-site .works__category { display: inline-block; width: fit-content; padding: 3px 12px; border-radius: 2px; background: #eee2f6; color: var(--brand-ink); font-size: 11px; font-weight: 500; }
.work-preview h3 { font-size: 17px; font-weight: 500; margin-top: 20px; line-height: 1.9; }
.section-end { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 32px; }
.section-end > p { font-size: 12px; color: var(--muted); }
#about { position: relative; isolation: isolate; overflow: hidden; }
/* ⚠ 装飾画像は CSS background ではなく <img loading="lazy"> で置く。
   background-image には loading が効かず、画面外でも初期読み込みに載ってしまう */
.about__watermark { position: absolute; z-index: -1; width: min(58vw, 640px); height: auto; right: -40px; top: 50%; transform: translateY(-50%); opacity: .2; pointer-events: none; }
.company-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; }
.company-story h3 { font-weight: 700; font-size: 29px; line-height: 1.7; margin-bottom: 24px; }
.company-story p { font-size: 14px; color: var(--muted); margin-bottom: 20px; line-height: 2; }
.company-table dl { display: grid; grid-template-columns: 100px 1fr; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.company-table dl:first-child { border-top: 1px solid var(--line); }
.company-table dt { font-weight: 500; color: var(--brand-ink); }
.company-table dd { min-width: 0; overflow-wrap: anywhere; }
.media-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center; }
.media-embed { margin: 0; }
.media-embed__poster, .media-embed__frame { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; border: 0; background: #17141b; border-radius: 4px; }
.media-embed__poster { position: relative; padding: 0; overflow: hidden; cursor: pointer; }
.media-embed__poster img { display: block; width: 100%; height: 100%; object-fit: cover; }
.media-embed__play { position: absolute; inset: 50% auto auto 50%; transform: translate(-50%, -50%); width: 64px; height: 64px; display: grid; place-items: center; padding-left: 3px; border-radius: 50%; background: var(--brand); color: #30203d; font-size: 22px; box-shadow: 0 2px 16px #0003; }
.media-embed__play .site-icon { width: 26px; height: 26px; color: inherit; vertical-align: 0; }
.media-embed__poster:hover .media-embed__play { background: #d7bce9; }
.media-embed__caption { margin-top: 14px; font-size: 11px; color: var(--muted); line-height: 1.8; }
.media-embed__caption a { text-decoration: underline; text-underline-offset: 3px; }
.media-story h3 { font-size: 27px; font-weight: 700; line-height: 1.7; margin-bottom: 20px; }
.media-story > p:not(.eyebrow) { font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.external-note { font-size: 11px; font-weight: 400; }
.media-story .text-link { gap: 8px; }
#news { position: relative; isolation: isolate; overflow: hidden; padding-bottom: clamp(160px, 34vw, 660px); background: #fff; }
.news__backdrop { position: absolute; z-index: -1; bottom: 0; left: 50%; transform: translateX(-50%); width: min(100%, 1920px); height: auto; pointer-events: none; }
.news-layout { display: grid; grid-template-columns: 240px 1fr; gap: 48px; }
.news-layout .section-heading { margin-bottom: 0; }
.news-list { border-top: 1px solid var(--line); }
.news-list li { display: flex; align-items: center; flex-wrap: wrap; gap: 20px; padding: 26px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.news-list time { font-size: 13px; color: var(--muted); }
.news-list__tag { padding: 2px 12px; font-size: 11px; background: var(--tint); color: var(--brand-ink); }
.contact-banner { position: relative; isolation: isolate; overflow: hidden; padding-block: clamp(88px, 9vw, 136px) 40px; background: #fff; }
.contact-banner__sky { position: absolute; z-index: -1; top: 0; left: 50%; transform: translateX(-50%); width: min(100%, 1920px); height: auto; pointer-events: none; }
.contact-banner::before { top: 0; bottom: auto; height: 3px; }
.contact-banner__inner { display: flex; flex-direction: column; align-items: center; gap: 28px; text-align: center; }
.contact-banner h2 { font-size: 25px; font-weight: 700; line-height: 1.6; margin-bottom: 12px; }
.contact-banner p:not(.eyebrow) { font-size: 13px; }
.contact-banner .site-button { min-width: 260px; max-width: 100%; background: #fff; border-color: var(--brand); }
.contact-banner .site-button:hover { background: var(--tint); }
.site-footer { padding-top: 24px; font-size: 14px; background: #fff; }
.site-footer__landscape { width: 100%; max-width: 1920px; margin: 0 auto; overflow: hidden; }
.site-footer__landscape img { display: block; width: 100%; height: clamp(180px, 24vw, 360px); object-fit: cover; object-position: center bottom; }
.site-footer > .site-container { max-width: 960px; }
.site-footer__main { display: grid; grid-template-columns: 1fr 1.2fr; align-items: start; gap: 80px; padding-bottom: 0; }
.site-footer__identity { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
.site-footer__identity .site-logo img { width: 120px; height: 80px; }
.site-footer__details { min-width: 0; }
.site-footer__company { font-weight: 700; margin-bottom: 8px; font-size: 16px; }
.site-footer__details > p:last-child { color: var(--muted); }
.site-footer__links { display: grid; grid-template-rows: repeat(4, auto); grid-auto-flow: column; grid-template-columns: repeat(2, 1fr); gap: 0 24px; }
.site-footer__links a { display: inline-block; padding-block: 10px; font-size: 14px; font-weight: 500; }
.site-footer__links a:hover { color: var(--brand-ink); text-decoration: underline; text-underline-offset: 5px; }
.site-footer__bottom { padding-block: 8px 16px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px; color: var(--muted); }
.site-footer__bottom small { grid-column: 2; font-size: 12px; text-align: center; }
.site-footer__bottom > a { grid-column: 3; justify-self: end; font-size: 12px; padding-block: 8px; }
/* 下層ページの見出しと、フォーム・プロフィールの余白をそろえる */
.breadcrumb { display: flex; gap: 16px; align-items: center; padding-block: 22px; font-size: 11px; color: var(--muted); }
.breadcrumb a { text-decoration: underline; text-underline-offset: 3px; }
.corporate-site .contact-header { display: block; height: auto; margin: 0; padding: 54px max(40px, calc((100% - var(--content)) / 2)); background: var(--tint); border-bottom: 1px solid var(--line); }
.corporate-site .contact-header::before { display: none; }
.corporate-site .contact-title { display: flex; flex-direction: column-reverse; gap: 10px; text-align: left; color: var(--ink); }
.corporate-site .contact-title h1 { margin: 0; font-size: 36px; font-weight: 700; letter-spacing: .05em; line-height: 1.5; }
.corporate-site .contact-title p { color: var(--brand-ink); font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.corporate-site .contact-section { width: min(880px, calc(100% - 80px)); max-width: none; margin: 64px auto 96px; padding: 0; }
.corporate-site .section-title { text-align: left; margin-bottom: 32px; }
.corporate-site .section-title h2 { font-size: 24px; font-weight: 700; }
.corporate-site .section-title p { color: var(--brand-ink); }
.corporate-site .contact-form, .corporate-site .profile { border: 1px solid var(--line); background: #fff; padding: 40px; box-shadow: none; border-radius: 4px; }
.corporate-site .form-group input, .corporate-site .form-group textarea, .corporate-site .form-group select { font-size: 16px; background: #fff; }
.corporate-site .required { color: var(--brand-ink); }
.corporate-site .submit-button button, .corporate-site .home-button a, .corporate-site .form-sent__back a, .corporate-site .works__cta a { border-radius: 3px; background: var(--brand); color: #30203d; font-weight: 700; min-height: 52px; padding: 14px 28px; }
.corporate-site .profile__link-list a, .corporate-site .form-sent__title { color: var(--brand-ink); }
.works-content { padding-block: 64px 96px; }
.works-intro { display: grid; grid-template-columns: 1fr 1.3fr; gap: 64px; align-items: center; margin-bottom: 48px; }
.works-intro h2 { font-size: 28px; line-height: 1.7; font-weight: 700; }
.works-intro p { font-size: 14px; color: var(--muted); line-height: 2; }
.year-nav { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; padding-block: 20px; border-block: 1px solid var(--line); margin-bottom: 52px; font-size: 13px; }
.year-nav > span { margin-right: 16px; color: var(--muted); }
.year-nav a { display: inline-flex; gap: 32px; padding: 8px 20px; background: var(--tint); color: var(--brand-ink); }
.work-year { display: grid; grid-template-columns: 200px 1fr; gap: 48px; margin-bottom: 48px; }
.work-year > h2 { font-size: 40px; line-height: 1.3; color: var(--brand-ink); font-weight: 500; }
.work-year > h2 span { display: block; font-size: 12px; margin-top: 12px; color: var(--muted); font-weight: 400; }
.corporate-site .works__list { margin: 0; border-top: 1px solid var(--line); }
.corporate-site .works__item { display: grid; grid-template-columns: 126px 1fr 116px; align-items: center; gap: 20px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.corporate-site .works__name { font-size: 15px; font-weight: 500; line-height: 1.8; }
.corporate-site .works__link { color: var(--brand-ink); font-size: 12px; text-underline-offset: 5px; padding-block: 10px; }
.works__unpublished { font-size: 11px; color: var(--muted); }
.works-consult { margin-top: 52px; padding: 40px; background: var(--tint); text-align: center; border-radius: 4px; }
.works-consult h2 { font-size: 23px; font-weight: 700; margin-bottom: 14px; }
.works-consult p { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
@media (max-width: 1050px) {
    .site-nav__list { gap: 16px; font-size: 12px; }
    .site-header__inner { gap: 16px; }
    .company-grid { gap: 40px; }
    .media-grid { gap: 32px; }
    .work-year { grid-template-columns: 130px 1fr; gap: 32px; }
    .corporate-site .works__item { grid-template-columns: 112px 1fr; gap: 12px; }
    .works__link, .works__unpublished { grid-column: 2; }
}
@media (max-width: 834px) {
    .site-container { width: calc(100% - 40px); }
    .site-header__inner { width: calc(100% - 40px); height: 76px; }
    .site-logo img { width: 96px; height: 64px; }
    .site-nav--desktop { display: none; }
    .site-menu { display: block; }
    .site-menu summary { display: flex; align-items: center; gap: 16px; cursor: pointer; list-style: none; padding: 14px 0 14px 14px; font-size: 12px; }
    .site-menu summary::-webkit-details-marker { display: none; }
    .site-menu__icon { width: 22px; height: 10px; border-block: 1px solid var(--brand-ink); }
    .site-menu[open] .site-menu__icon { height: 1px; border-bottom: 0; }
    .site-menu nav { position: absolute; top: 100%; left: 0; right: 0; background: #fff; padding: 12px 24px 24px; border-bottom: 1px solid var(--line); box-shadow: 0 15px 20px #24112e12; max-height: calc(100dvh - 76px); overflow-y: auto; }
    .site-menu .site-nav__list { display: block; }
    .site-menu .site-nav__list a { display: block; padding: 14px 8px; border-bottom: 1px solid var(--line); font-size: 14px; }
    .site-menu .site-nav__list .site-nav__contact { display: flex; margin-top: 12px; padding-inline: 16px; }
    .site-section { padding-block: 64px; }
    .section-heading { align-items: start; flex-direction: column; gap: 16px; margin-bottom: 28px; }
    .section-heading h2 { font-size: 28px; }
    /* ⚠ SP は専用の切り出し (760x724 / 71KB) を使う。PC 用の 2172x724 を cover すると
       横幅の 27% しか表示されないのに 386KB 読むことになる */
    .hero { background-image: linear-gradient(180deg, rgba(25,27,36,0) 45%, rgba(25,27,36,.5)), linear-gradient(90deg, rgba(25,27,36,.86), rgba(25,27,36,.52)), url('../img/hero-riverside-sp.jpg'); background-position: center; }
    .hero__inner { padding-block: 64px 28px; }
    .hero h1 { font-size: clamp(27px, 4.7vw, 38px); letter-spacing: .02em; }
    .hero__description { font-size: 14px; }
    .hero__caption { margin-top: 48px; font-size: 9px; text-align: left; }
    .service-card__body { padding: 24px; }
    .service-card__visual img { height: 190px; }
    .service-card h3 { font-size: 21px; }
    .service-grid { gap: 20px; }
    .company-grid, .media-grid { grid-template-columns: 1fr; gap: 36px; }
    .company-story h3, .media-story h3 { font-size: 25px; }
    .company-story { max-width: 620px; }
    .work-preview li { padding: 24px 18px; }
    .work-preview h3 { font-size: 15px; }
    .section-end { align-items: start; flex-direction: column; }
    .news-layout { grid-template-columns: 1fr; gap: 24px; }
    .contact-banner { padding-block: 88px 32px; }
    .contact-banner__inner { gap: 24px; }
    .contact-banner h2 { font-size: 22px; }
    .site-footer__main { grid-template-columns: 1fr 1fr; gap: 32px; }
    .site-footer__identity { justify-content: flex-start; }
    .site-footer__links { width: 100%; gap: 0 20px; }
    .corporate-site .contact-header { padding: 40px 20px; }
    .corporate-site .contact-title h1 { font-size: 29px; }
    .corporate-site .contact-section { width: calc(100% - 40px); margin-block: 40px 64px; }
    .corporate-site .contact-form, .corporate-site .profile { padding: 24px; }
    .works-content { padding-block: 40px 64px; }
    .works-intro { grid-template-columns: 1fr; gap: 20px; margin-bottom: 32px; }
    .works-intro h2 { font-size: 25px; }
    .work-year { grid-template-columns: 1fr; gap: 24px; }
    .work-year > h2 { font-size: 32px; }
    .work-year > h2 span { display: inline-block; margin-left: 16px; }
    .works-consult { padding: 32px 24px; }
}
@media (max-width: 580px) {
    #about::before { width: 380px; right: -130px; opacity: .16; }
    .service-grid, .work-preview { grid-template-columns: 1fr; }
    .service-card__visual img { height: auto; aspect-ratio: 16 / 9; }
    .work-preview li, .work-preview li:first-child, .work-preview li:last-child { padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--line); }
    .work-preview li:last-child { border-bottom: 0; }
    .work-preview h3 { margin-top: 12px; font-size: 16px; }
    .company-table dl { grid-template-columns: 76px 1fr; gap: 16px; font-size: 13px; }
    .news-list li { gap: 12px; }
    .news-list p { flex-basis: 100%; }
    .site-footer__main { grid-template-columns: 1fr; gap: 24px; }
    .site-footer__identity { gap: 14px; }
    .site-footer__identity .site-logo img { width: 108px; height: 72px; }
    .site-footer__company { font-size: 15px; }
    .site-footer__details > p:last-child { font-size: 13px; }
    .site-footer__bottom { grid-template-columns: 1fr; gap: 12px; }
    .site-footer__bottom small { grid-column: 1; grid-row: 2; }
    .site-footer__bottom > a { grid-column: 1; grid-row: 1; }
    .site-footer__links { gap: 0 20px; }
    .corporate-site .works__item { grid-template-columns: 1fr; gap: 12px; }
    .works__link, .works__unpublished { grid-column: 1; }
    .works__link { width: fit-content; }
    .corporate-site .contact-form, .corporate-site .profile { padding: 24px 18px; }
    .works-consult h2 { font-size: 20px; }
    .contact-banner h2 { font-size: 21px; }
}
.service-card__visual { overflow: hidden; }
.service-card__visual img { transition: transform .45s cubic-bezier(.22, 1, .36, 1); }
/* ホバーの反応は控えめに。常時動く演出や視差効果は置かない */
.site-button, .site-nav__list .site-nav__contact {
    transition: background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.text-link { transition: color .2s ease, border-color .2s ease; }
@media (hover: hover) and (pointer: fine) {
    .service-card:hover .service-card__visual img { transform: scale(1.025); }
    .site-button:hover, .site-nav__list .site-nav__contact:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(107, 74, 134, .1);
    }

    /* ⚠ 上の hover は box-shadow を «置き換える» ため、キーボードでフォーカスした
       ボタンにマウスが乗るとフォーカスリングが消える (白の outline だけが残り、
       明るい地では 1.00:1 になる)。併発時は両方の影を並べて書く */
    .site-button:focus-visible:hover,
    .site-nav__list .site-nav__contact:focus-visible:hover {
        box-shadow: 0 0 0 6px var(--brand-ink), 0 4px 12px rgba(107, 74, 134, .1);
    }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .site-button:hover, .site-nav__list .site-nav__contact:hover, .service-card:hover .service-card__visual img { transform: none; }
    .corporate-site *, .corporate-site *::before, .corporate-site *::after { animation: none !important; transition: none !important; }
}