/* 予防歯科・定期検診ページ専用。既存ページには読み込まない。 */
body.prevention-index { min-width: 0; }
body.prevention-index > main.prevention-page { width: 100%; margin: 0; min-height: 0; }
.prevention-index .site-header { position: absolute; z-index: 5; top: 0; left: 0; width: 100%; }
.prevention-page :is(p,h2,h3,h4) { line-break: strict; word-break: normal; text-wrap: pretty; }
body.prevention-index .prevention-page p { margin: 0; }
body.prevention-index .prevention-page .section-heading h2 { margin: 5px 0 0; font-size: 40px; font-weight: var(--font-weight-heading); line-height: 1.45; }
.prevention-page .section-heading { text-align: center; }
.prevention-page .section-heading__rule { margin-top: 15px; }
.prevention-page__container { width: min(1180px, calc(100% - 64px)); margin-inline: auto; }
.prevention-about { min-height: 724px; padding: 90px 0 110px; }
.prevention-about__columns { display: grid; grid-template-columns: minmax(0,597fr) minmax(0,549fr); gap: 34px; align-items: center; margin-top: 47px; }
.prevention-about__text h3 { margin-bottom: 35px; color: var(--color-orange); font-size: 35px; font-weight: var(--font-weight-heading); line-height: 55px; letter-spacing: 3.15px; }
.prevention-about__text p { font-size: 18px; line-height: 37px; }
.prevention-media { position: relative; overflow: hidden; }
.prevention-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.prevention-about__photo { aspect-ratio: 549 / 381; mask: url('../images/prevention-about-mask.svg') center / 100% 100% no-repeat; }
.prevention-checkup { background: #fff; min-height: 1089px; padding: 60px 0 65px; }
.prevention-checkup__cards { margin: 65px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 15px; }
.prevention-checkup__card { border-radius: 8.839px; box-shadow: 0 0 3.536px #0004; min-height: 358.861px; padding: 10.61px 10.16px 15px; background: white; }
.prevention-checkup__card-title { display: flex; align-items: center; gap: 7px; margin-bottom: 12.375px; }
.prevention-checkup__number { width: 53.034px; height: 53.034px; flex: none; display: grid; place-items: center; background: url('../images/prevention-number.svg') center / contain no-repeat; font-size: 27px; color: white; }
.prevention-checkup__card h3 { flex: 1; text-align: center; font-size: 20px; font-weight: var(--font-weight-heading); }
.prevention-checkup__photo { aspect-ratio: 263.398 / 127.281; mask: url('../images/prevention-card-mask.svg') center / 100% 100% no-repeat; }
body.prevention-index .prevention-checkup__card p { margin: 14.142px 5px 0; font-size: 16px; line-height: 26.517px; letter-spacing: 2.08px; font-weight: 500; }
.prevention-period { width: min(1239px, calc(100% - 48px)); margin: 60px auto 0; border-radius: 10px; background: #fffaf1; padding: 26px 29px; display: grid; grid-template-columns: minmax(0,576fr) minmax(0,589fr); gap: 6px; align-items: center; }
.prevention-period__text h3 { font-size: 30px; line-height: 30px; letter-spacing: .9px; }
.prevention-period__rule { margin: 23px 0 8px; }
.prevention-period__text h4 { color: var(--color-orange); font-size: 25px; line-height: 35px; letter-spacing: 2.25px; }
body.prevention-index .prevention-period__text p { margin-top: 13px; font-size: 16px; font-weight: 500; line-height: 28px; letter-spacing: 1.12px; }
.prevention-period__options { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 17px; }
.prevention-period__option { min-height: 214px; text-align: center; background: url('../images/prevention-period-bg.svg') center bottom / 100% auto no-repeat; }
.prevention-period__tooth { width: 75px; height: 75px; margin: 0 auto 8px; display: grid; place-items: center; background: var(--period-icon-bg) center / contain no-repeat; }
.prevention-period__option--pink { --period-color: #fe2626; --period-icon-bg: url('../images/prevention-period-pink.svg'); }
.prevention-period__option--orange { --period-color: #fe8f26; --period-icon-bg: url('../images/prevention-period-orange.svg'); }
.prevention-period__option--green { --period-color: #46a914; --period-icon-bg: url('../images/prevention-period-green.svg'); }
.prevention-period__option h4 { margin-bottom: 0; color: var(--period-color); font-size: 20px; line-height: 20px; letter-spacing: 2px; }
body.prevention-index .prevention-period__option p { margin-top: 12px; font-size: 16px; line-height: 25px; font-weight: 500; }
.prevention-period__arrow { display: block; width: calc(100% - 20px); height: auto; margin: 4px auto 0; }
.prevention-reasons { min-height: 837px; padding: 120px 0 100px; }
.prevention-reasons__inner { width: min(1209px, calc(100% - 64px)); margin-inline: auto; }
body.prevention-index p.prevention-page__lead { margin: 30px auto 0; text-align: center; font-size: 20px; line-height: 29px; letter-spacing: 2.6px; font-weight: 500; }
.prevention-reasons__cards { margin: 65px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 15px; }
.prevention-reasons__card { min-height: 355px; border-radius: 10px; background: #fff; box-shadow: 0 0 4px #0004; padding: 0 20px 23px; text-align: center; }
.prevention-reasons__illustration { width: 212px; max-width: 100%; height: 177px; margin: 0 auto -9px; }
.prevention-reasons__card h3 { font-size: 20px; line-height: 29px; letter-spacing: 3.8px; font-weight: var(--font-weight-heading); margin-inline: -6px; }
.prevention-reasons__rule { margin: 24px auto 17px; }
.prevention-reasons__card p { text-align: left; font-size: 18px; line-height: 30px; letter-spacing: 1.26px; font-weight: 500; }
.prevention-faq { padding-top: 85px; background: white; }
.prevention-faq__list { width: min(737px, calc(100% - 48px)); margin: 52px auto 0; display: grid; gap: 11px; }
.prevention-faq__item { border-radius: 14px; }
.prevention-faq__question { display: flex; align-items: center; gap: 24px; min-height: 59px; padding: 7px 17px; font-size: 20px; letter-spacing: 2.6px; font-weight: 500; list-style: none; }
button.prevention-faq__question { width: 100%; border: 0; border-radius: 14px; background: #fcf9f7; color: inherit; font-family: inherit; text-align: left; cursor: pointer; }
button.prevention-faq__question:focus-visible { outline: 2px solid var(--color-orange); outline-offset: 3px; }
.prevention-faq__q { flex: none; display: grid; place-items: center; width: 42px; height: 42px; background: url('../images/prevention-faq-q.svg') center / contain no-repeat; color: #fcf9f7; }
.prevention-faq__plus { position: relative; width: 18px; height: 18px; margin-left: auto; flex: none; }

.prevention-faq__answer { padding: 16px 26px 24px 83px; font-size: 18px; line-height: 1.8; }
.prevention-booking { position: relative; width: min(1239px, calc(100% - 48px)); min-height: 210.547px; margin: 180px auto 0; }
.prevention-booking__background { position: absolute; inset: 0; background-color: #f4eadb; mask: url('../images/prevention-cta-mask.svg') center / 100% 100% no-repeat; }
.prevention-booking__inner { position: relative; padding: 31px 123px 24px 114px; display: grid; grid-template-columns: minmax(0,487fr) minmax(0,347fr); gap: clamp(30px, 11.67vw, 168px); align-items: center; }
.prevention-booking__text h3 { font-size: 35px; font-weight: 400; line-height: 40px; }
body.prevention-index .prevention-booking__text p { margin-top: 22px; font-size: 18px; line-height: 1.5; }
.prevention-booking__actions { display: flex; flex-direction: column; align-items: center; gap: 9px; }
.prevention-booking__actions .button { width: 100%; min-height: 62.727px; border-radius: 31.363px; font-size: 20px; font-weight: 700; gap: 20px; white-space: nowrap; }
.prevention-booking__phone { display: flex; align-items: center; gap: 15px; font-size: 30px; font-weight: 500; white-space: nowrap; }
.prevention-booking__hours { font-size: 14px; line-height: 14px; white-space: nowrap; }
.prevention-index .design-container { max-width: 100%; }
.prevention-index .site-header__inner { max-width: calc(100% - 28px); }
@media (min-width: 768px) and (max-width: 1439px) {
 .prevention-index .design-container { width: 100%; }
 .prevention-index .site-header__inner { width: calc(100% - 32px); gap: 12px; }
 .prevention-index .primary-nav { flex: 1; width: auto; justify-content: space-between; gap: 8px; font-size: clamp(12px,1.38vw,20px); }
 .prevention-index .brand--header { transform: scale(.8); width: 145px; }
 .prevention-index .header-contact__phone { display: none; }
 .prevention-index .reservation-header { width: 140px; }
 .prevention-index .contact__inner { width: calc(100% - 64px); }
 .prevention-index .footer-navigation__columns { padding-inline: 32px; justify-content: space-around; gap: 32px; }
 .prevention-index .footer-navigation a { font-size: 16px; }
 .prevention-index .footer-navigation ul { column-gap: 24px; }
}
@media (min-width: 768px) and (max-width: 1244px) {
 .prevention-index .contact__columns { grid-template-columns: minmax(0,634px); justify-content: center; gap: 32px; }
 .prevention-index .contact__details { max-width: 454.324px; margin-inline: auto; }
 .prevention-index .contact { padding-bottom: 65px; }
 .prevention-checkup__cards, .prevention-reasons__cards { grid-template-columns: repeat(2,minmax(0,1fr)); }
 .prevention-period { grid-template-columns: minmax(0,1fr); gap: 32px; }
 .prevention-period__diagram { width: 589px; max-width: 100%; margin-inline: auto; }
 .prevention-booking__inner { padding-inline: 40px; gap: 30px; }
 .prevention-booking__text h3 { font-size: 28px; }
}
@media (min-width: 768px) and (max-width: 1000px) {
 .prevention-index .primary-nav { display: grid; grid-template-columns: repeat(4,auto); gap: 18px 10px; font-size: 13px; }
 .prevention-about__columns { grid-template-columns: minmax(0,1fr); }
 .prevention-about__photo { max-width: 549px; width: 100%; margin-inline: auto; }
}
/* Figmaのセクション境界に合わせる（本文は高さ固定で切り取らない）。 */
@media (min-width: 1245px) {
 .prevention-about { padding-bottom: 98px; }
 .prevention-checkup { padding-bottom: 53px; }
 .prevention-period { padding-right: 39px; }
 .prevention-booking { margin-top: 117px; }
}
@media (max-width: 767px) {
 .prevention-index .site-header { position: relative; }
 .prevention-index .site-header__inner { max-width: 100%; }
 .prevention-page__container, .prevention-reasons__inner { width: calc(100% - 40px); max-width: 520px; }
 body.prevention-index .prevention-page .section-heading h2 { font-size: 26px; line-height: 1.5; text-wrap: balance; }
 .prevention-page .section-heading__en { font-size: 14px; line-height: 1.6; letter-spacing: 1.8px; }
 .prevention-page .section-heading__rule { margin-top: 10px; }
 .prevention-page__pc-break { display: none; }
 .prevention-about { min-height: 0; padding: 50px 0; }
 .prevention-about__columns { grid-template-columns: minmax(0,1fr); gap: 24px; margin-top: 30px; }
 .prevention-about__photo { grid-row: 1; }
 .prevention-about__text h3 { font-size: 24px; line-height: 1.7; letter-spacing: 1px; margin-bottom: 20px; text-wrap: balance; }
 .prevention-about__text p { font-size: 16px; line-height: 1.9; }
 .prevention-checkup { min-height: 0; padding: 50px 0; }
 .prevention-checkup__cards { grid-template-columns: minmax(0,1fr); gap: 24px; margin-top: 30px; }
 .prevention-checkup__card { min-height: 0; padding: 14px; }
 .prevention-checkup__card-title { margin-bottom: 14px; }
 .prevention-checkup__card h3 { font-size: 20px; }
 body.prevention-index .prevention-checkup__card p { margin: 16px 0 0; font-size: 16px; line-height: 1.8; letter-spacing: .5px; }
 .prevention-period { width: calc(100% - 32px); max-width: 552px; margin-top: 36px; padding: 24px 16px; grid-template-columns: minmax(0,1fr); gap: 28px; }
 .prevention-period__text h3 { font-size: 24px; line-height: 1.5; }
 .prevention-period__rule { margin: 12px 0; }
 .prevention-period__text h4 { font-size: 20px; line-height: 1.7; letter-spacing: .5px; text-wrap: balance; }
 body.prevention-index .prevention-period__text p { font-size: 15px; line-height: 1.9; letter-spacing: .3px; }
 .prevention-period__options { gap: 6px; }
 .prevention-period__option { min-height: 160px; background-size: 100% auto; }
 .prevention-period__tooth { width: 48px; height: 48px; margin-bottom: 8px; }
 .prevention-period__tooth img { transform: scale(.64); }
 .prevention-period__option h4 { font-size: 13px; line-height: 20px; letter-spacing: 0; white-space: nowrap; }
 body.prevention-index .prevention-period__option p { margin-top: 6px; font-size: 12px; line-height: 1.6; text-wrap: balance; }
 .prevention-period__option p br { display: none; }
 .prevention-period__arrow { width: 100%; }
 .prevention-reasons { min-height: 0; padding: 50px 0; }
 body.prevention-index p.prevention-page__lead { width: calc(100% - 40px); max-width: 520px; margin-top: 20px; font-size: 15px; line-height: 1.8; letter-spacing: .5px; text-wrap: pretty; }
 .prevention-reasons .prevention-page__lead { width: 100%; }
 .prevention-reasons__cards { grid-template-columns: minmax(0,1fr); gap: 24px; margin-top: 30px; }
 .prevention-reasons__card { min-height: 0; padding: 0 20px 24px; }
 .prevention-reasons__card h3 { font-size: 20px; letter-spacing: 1px; }
 .prevention-reasons__card p { font-size: 16px; line-height: 1.8; letter-spacing: .5px; }
 .prevention-reasons__rule { margin-block: 16px; }
 .prevention-faq { padding-top: 50px; }
 .prevention-faq__list { width: calc(100% - 40px); max-width: 520px; margin-top: 30px; }
 .prevention-faq__question { padding: 12px; gap: 10px; font-size: 16px; line-height: 1.7; letter-spacing: .3px; }
 .prevention-faq__q { width: 32px; height: 32px; }
 .prevention-faq__question > span:nth-child(2) { flex: 1; }
 .prevention-faq__answer { padding: 12px 16px 20px; font-size: 15px; line-height: 1.8; }
 .prevention-booking { width: calc(100% - 32px); max-width: 552px; min-height: 0; margin-top: 60px; }
 .prevention-booking__inner { padding: 28px 20px; grid-template-columns: minmax(0,1fr); gap: 24px; }
 .prevention-booking__background { mask: none; border-radius: 16px; }
 .prevention-booking__text h3 { font-size: 25px; line-height: 1.6; text-wrap: balance; }
 body.prevention-index .prevention-booking__text p { margin-top: 16px; font-size: 15px; line-height: 1.8; }
 .prevention-booking__actions .button { min-height: 54px; font-size: 18px; gap: 14px; }
 .prevention-booking__phone { font-size: 25px; gap: 10px; }
 .prevention-booking__hours { font-size: 13px; line-height: 1.6; }
}
@media (min-width: 600px) and (max-width: 767px) {
 .prevention-checkup__cards, .prevention-reasons__cards { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
}
@media (prefers-reduced-motion: reduce) {
 .prevention-faq__plus { transition: none; }
}

/* 写真枠を固定し、Figmaの元画像の拡大率・切り抜き位置を枠に対する比率で保持。 */
.prevention-about__photo img,
.prevention-checkup__photo img,
.prevention-booking__background img {
 position: absolute;
 max-width: none;
 width: var(--media-width, 100%);
 height: var(--media-height, 100%);
 left: var(--media-left, 0%);
 top: var(--media-top, 0%);
 object-fit: cover;
}
.prevention-about__photo { --media-width: 126.0474%; --media-height: 120.9974%; --media-left: -1.275%; --media-top: -6.0367%; }
.prevention-checkup__photo[data-media-slot="checkup-1"] { --media-width: 98.6583%; --media-height: 136.1107%; --media-left: .6705%; --media-top: -11.803%; }
.prevention-checkup__photo[data-media-slot="checkup-2"] { --media-width: 103.2658%; --media-height: 142.205%; --media-left: -1.566%; --media-top: -23.6375%; }
.prevention-checkup__photo[data-media-slot="checkup-3"] { --media-width: 127.854%; --media-height: 176.3885%; --media-left: -18.4575%; --media-top: -25.6975%; }
.prevention-checkup__photo[data-media-slot="checkup-4"] { --media-width: 165.529%; --media-height: 228.628%; --media-left: -32.895%; --media-top: -49.5643%; }
.prevention-booking__background { --media-width: 100%; --media-height: 196.153%; --media-left: .0303%; --media-top: -48.256%; }
@media (max-width: 767px) {
 .prevention-booking__background { --media-height: 196.153%; --media-left: 0%; --media-top: -48.256%; }
 .prevention-booking__background img { object-position: center; }
}

/* SPの指定改行。文字サイズを維持し、長い1行目のみ字間を微調整。 */
@media (max-width: 767px) {
 .prevention-about__heading-line { display: block; white-space: nowrap; }
 .prevention-about__heading-line:first-child { letter-spacing: clamp(-1.8px, calc(4.2vw - 15.25px), .5px); }
}
@media (max-width: 360px) {
 .prevention-about__text h3 { margin-inline: -12px; }
}

/* 通院間隔の文字だけを上げる。円・アイコン・矢印の配置は維持する。 */
.prevention-period__option h4,
.prevention-period__option p { position: relative; top: -4px; }
/* SPも、色付き円が白い円の上辺に重なる構成に統一。 */
@media (max-width: 767px) {
 .prevention-period__diagram { container-type: inline-size; width: calc(100% + 32px); margin-inline: -16px; }
 .prevention-period__option {
  background-position: center 24px;
  min-height: max(160px, calc((100cqw - 12px) / 3 + 24px));
 }
 .prevention-period__tooth { margin-bottom: 0; }
 .prevention-period__option h4 { margin-top: 0; top: 0; }
 .prevention-period__option p { top: 0; }
 .prevention-period__option p br { display: initial; }
}

/* FAQ：高さはgridで自動追従。複数開閉・本文編集・画面幅変更に対応。 */
.prevention-faq__plus::before,
.prevention-faq__plus::after { content: ''; position: absolute; background: var(--color-orange); border-radius: 1px; }
.prevention-faq__plus::before { width: 18px; height: 2px; left: 0; top: 8px; }
.prevention-faq__plus::after { width: 2px; height: 18px; top: 0; left: 8px; transition: transform .3s ease, opacity .3s ease; }
.prevention-faq__question[aria-expanded="true"] .prevention-faq__plus::after { transform: scaleY(0); opacity: 0; }
.prevention-faq__panel { display: grid; grid-template-rows: 1fr; opacity: 1; transition: grid-template-rows .3s ease, opacity .3s ease; }
.prevention-faq__panel-inner { min-height: 0; overflow: hidden; }
.prevention-faq__answer { margin-top: 10px; background: #fff; border: 1px solid #eee5db; border-radius: 14px; }
.prevention-faq__item.is-ready .prevention-faq__question[aria-expanded="false"] + .prevention-faq__panel { grid-template-rows: 0fr; opacity: 0; }
body.prevention-index .prevention-faq__answer p + p { margin-top: 1em; }
@media (prefers-reduced-motion: reduce) {
 .prevention-faq__panel, .prevention-faq__plus::after { transition: none; }
}
/* SPの予約CTAは、全内容を包む1枚のカードとして構成する。 */
@media (max-width: 767px) {
 .prevention-booking { height: auto; border-radius: 16px; background: #f4eadb; overflow: hidden; isolation: isolate; }
 .prevention-booking__background { inset: 0; border-radius: inherit; pointer-events: none; opacity: .65; }
 .prevention-booking__inner { display: flex; flex-direction: column; align-items: stretch; gap: 28px; padding: 32px 24px; }
 .prevention-booking__text { min-width: 0; text-align: left; }
 .prevention-booking__text h3 { font-size: clamp(20px, 6vw, 25px); line-height: 1.6; text-wrap: pretty; }
 body.prevention-index .prevention-booking__text p { margin-top: 18px; font-size: 15px; line-height: 1.8; text-wrap: pretty; }
 .prevention-booking__actions { width: 100%; min-width: 0; gap: 0; }
 .prevention-booking__actions .button { width: 94%; max-width: 347px; min-height: 56px; padding-inline: 12px; gap: 12px; font-size: 18px; }
 .prevention-booking__phone { justify-content: center; width: 100%; min-height: 44px; margin-top: 20px; gap: 10px; font-size: 25px; }
 body.prevention-index p.prevention-booking__hours { width: 100%; margin: 10px 0 0; text-align: center; font-size: 13px; line-height: 1.8; white-space: normal; text-wrap: pretty; }
}
@media (max-width: 360px) {
 .prevention-booking__actions .button { width: 100%; gap: 8px; }
}