/* =========================================================
   PREVENTION
========================================================= */

.prevention-main {
    background: #fff;
    color: #303a35;
}

.prevention-main *,
.prevention-main *::before,
.prevention-main *::after {
    box-sizing: border-box;
}

.prevention-main .container {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto;
}

.prevention-main .section {
    padding: 70px 0;
}

.prevention-main .section--gray {
    background: #f5f7f5;
}


/* =========================================================
   BREADCRUMB
========================================================= */

.prevention-main .breadcrumb {
    border-bottom: 1px solid #e2e7e4;
    background: #fff;
}

.prevention-main .breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin: 0;
    padding: 14px 0;
    list-style: none;
    color: #818a85;
    font-size: 11px;
}

.prevention-main .breadcrumb li:not(:last-child)::after {
    content: "/";
    margin-left: 7px;
    color: #b4bbb7;
}

.prevention-main .breadcrumb a {
    color: #65716a;
    text-decoration: none;
}


/* =========================================================
   COMMON
========================================================= */

.prevention-main .section-en {
    margin: 0 0 10px;
    color: #718a7c;
    font-family: Arial, sans-serif;
    font-size: 10px;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: .22em;
}

.prevention-main .section-heading {
    width: 100%;
    margin-bottom: 48px;
}

.prevention-main .section-heading h2,
.prevention-main .prevention-intro h2,
.prevention-main .prevention-image-text h2,
.prevention-main .airflow-lead h2,
.prevention-main .implant-maintenance-section h2,
.prevention-main .frequency-section h2,
.prevention-main .prevention-closing h2,
.prevention-main .prevention-reservation h2 {
    margin: 0;
    color: #29372f;
    font-family:
        "Noto Serif JP",
        "Yu Mincho",
        "Hiragino Mincho ProN",
        serif;
    font-size: 32px;
    font-weight: 500;
    line-height: 1.55;
    letter-spacing: .025em;
}

.prevention-main .section-heading__lead {
    max-width: 900px;
    margin: 20px 0 0;
    color: #5d6962;
    font-size: 15px;
    line-height: 2;
}


/* =========================================================
   INTRO
========================================================= */

.prevention-intro {
    padding-top: 80px !important;
}

.prevention-intro__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(420px, .95fr);
    gap: 65px;
    align-items: center;
}

.prevention-intro__content {
    min-width: 0;
}

.prevention-intro__content h2 {
    margin-bottom: 27px !important;
}

.prevention-intro__content > p:not(.section-en) {
    width: 100%;
    margin: 0 0 18px;
    color: #59655e;
    font-size: 16px;
    line-height: 2.1;
}

.prevention-intro__content > p:last-child {
    margin-bottom: 0;
}

.prevention-intro__image img {
    display: block;
    width: 100%;
    height: 520px;
    object-fit: cover;
}


/* =========================================================
   AIRFLOW LEAD
========================================================= */

.airflow-lead {
    padding: 70px 0;
    background: #315e53;
    color: #fff;
}

.airflow-lead__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(400px, .95fr);
    gap: 65px;
    align-items: center;
}

.airflow-lead .section-en {
    color: #b8d9cf;
}

.airflow-lead__sub {
    margin: 0 0 8px;
    color: #d5e7e1;
    font-size: 13px;
    font-weight: 600;
}

.prevention-main .airflow-lead h2 {
    margin-bottom: 25px;
    color: #fff;
}

.airflow-lead__content > p:not(.section-en):not(.airflow-lead__sub) {
    margin: 0 0 17px;
    color: #e4efeb;
    font-size: 15px;
    line-height: 2.05;
}

.airflow-lead__content > p:last-child {
    margin-bottom: 0;
}

.airflow-lead__image img {
    display: block;
    width: 100%;
    height: 490px;
    object-fit: cover;
}


/* =========================================================
   CONCERNS
========================================================= */

.concern-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: #dbe2de;
    border: 1px solid #dbe2de;
}

.concern-item {
    position: relative;
    padding: 21px 25px 21px 55px;
    background: #fff;
    color: #46554d;
    font-size: 15px;
    line-height: 1.7;
}

.concern-item::before {
    content: "✓";
    position: absolute;
    top: 20px;
    left: 25px;
    color: #537463;
    font-weight: 700;
}


/* =========================================================
   IMAGE + TEXT
========================================================= */

.prevention-image-text {
    display: grid;
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    gap: 65px;
    align-items: center;
}

.prevention-image-text--reverse .prevention-image-text__image {
    order: 2;
}

.prevention-image-text--reverse .prevention-image-text__content {
    order: 1;
}

.prevention-image-text__image img {
    display: block;
    width: 100%;
    /*height: 470px;*/
    object-fit: cover;
}

.prevention-image-text__content h2 {
    margin-bottom: 25px;
}

.prevention-image-text__content > p:not(.section-en) {
    margin: 0 0 18px;
    color: #5d6962;
    font-size: 15px;
    line-height: 2.1;
}

.prevention-image-text__content > p:last-child {
    margin-bottom: 0;
}

.prevention-note {
    padding: 14px 17px;
    border-left: 3px solid #839b8e;
    background: #eef2ef;
    font-size: 12px !important;
}

.prevention-link a,
.implant-maintenance-link a {
    display: inline-block;
    padding-bottom: 4px;
    border-bottom: 1px solid currentColor;
    color: #426a58;
    text-decoration: none;
    font-weight: 600;
}


/* =========================================================
   AIRFLOW ABOUT
========================================================= */

.airflow-about-section {
    background: #edf4f1;
}

.airflow-about {
    display: grid;
    grid-template-columns: minmax(400px, .9fr) minmax(0, 1.1fr);
    gap: 65px;
    align-items: center;
}

.airflow-about__image img {
    display: block;
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.airflow-about__content h3 {
    margin: 0 0 22px;
    color: #30473d;
    font-family:
        "Noto Serif JP",
        "Yu Mincho",
        serif;
    font-size: 25px;
    font-weight: 500;
    line-height: 1.6;
}

.airflow-about__content p {
    margin: 0 0 17px;
    color: #5e6d65;
    font-size: 15px;
    line-height: 2.05;
}

.airflow-about__content p:last-child {
    margin-bottom: 0;
}


/* =========================================================
   FEATURES
========================================================= */

.feature-list {
    border-top: 1px solid #d5ddd8;
}

.feature-item {
    display: grid;
    grid-template-columns: 100px minmax(0, 1fr);
    gap: 20px;
    padding: 34px 0;
    border-bottom: 1px solid #d5ddd8;
}

.feature-item__number {
    color: #648070;
    font-size: 34px;
}

.feature-item h3 {
    margin: 0 0 10px;
    color: #33463b;
    font-size: 18px;
}

.feature-item p {
    margin: 0;
    color: #626e67;
    font-size: 14px;
    line-height: 2;
}


/* =========================================================
   COMPARE
========================================================= */

.compare-table-wrap {
    width: 100%;
    overflow-x: auto;
}

.compare-table {
    width: 100%;
    min-width: 700px;
    border-collapse: collapse;
    border-spacing: 0;
}

.compare-table th,
.compare-table td {
    padding: 21px 24px;
    border: 1px solid #dce3df;
    vertical-align: middle;
    font-size: 14px;
    line-height: 1.8;
}

.compare-table thead th {
    background: #45695a;
    color: #fff;
    font-weight: 600;
    text-align: center;
}

.compare-table thead th:first-child {
    background: #344f44;
}

.compare-table tbody th {
    width: 22%;
    background: #f2f5f3;
    color: #394b42;
    text-align: left;
}

.compare-table tbody td {
    color: #606d66;
    background: #fff;
}


/* =========================================================
   IMPLANT MAINTENANCE
========================================================= */

.implant-maintenance-section {
    padding: 70px 0;
    background: #405b4e;
}

.implant-maintenance-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(400px, .95fr);
    gap: 65px;
    align-items: center;
}

.implant-maintenance-section .section-en {
    color: #bcd0c5;
}

.prevention-main .implant-maintenance-section h2 {
    margin-bottom: 25px;
    color: #fff;
}

.implant-maintenance-content > p:not(.section-en) {
    margin: 0 0 17px;
    color: #e3ebe6;
    font-size: 15px;
    line-height: 2.05;
}

.implant-maintenance-link a {
    color: #fff;
}

.implant-maintenance-image img {
    display: block;
    width: 100%;
    height: 480px;
    object-fit: cover;
}


/* =========================================================
   PROFESSIONAL CARE
========================================================= */

.care-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: #d8dfdb;
    border: 1px solid #d8dfdb;
}

.care-card {
    min-height: 260px;
    padding: 32px 28px;
    background: #fff;
}

.care-card > span {
    display: block;
    margin-bottom: 24px;
    color: #82968a;
    font-size: 28px;
}

.care-card h3 {
    margin: 0 0 13px;
    color: #33463b;
    font-size: 17px;
}

.care-card p {
    margin: 0;
    color: #66716b;
    font-size: 13px;
    line-height: 1.95;
}

.care-card--accent {
    background: #315e53;
}

.care-card--accent > span {
    color: #b7d8cd;
}

.care-card--accent h3 {
    color: #fff;
}

.care-card--accent p {
    color: #e0ebe7;
}


/* =========================================================
   FLOW
========================================================= */

.prevention-flow {
    border-top: 1px solid #d8dfdb;
}

.flow-item {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr);
    padding: 32px 0;
    border-bottom: 1px solid #d8dfdb;
}

.flow-item__number {
    color: #789083;
    font-size: 34px;
}

.flow-item__content h3 {
    margin: 0 0 10px;
    color: #33463b;
    font-size: 18px;
}

.flow-item__content p {
    margin: 0;
    color: #647068;
    font-size: 14px;
    line-height: 2;
}

.flow-item--airflow {
    padding-right: 30px;
    padding-left: 30px;
    background: #e8f1ed;
    border-bottom: 0;
}

.flow-item--airflow .flow-item__number {
    color: #416c5a;
}


/* =========================================================
   FREQUENCY
========================================================= */

.frequency-section {
    padding: 65px 0;
    background: #edf2ef;
}

.frequency-inner {
    width: 100%;
}

.frequency-inner h2 {
    margin-bottom: 25px !important;
}

.frequency-inner > p:not(.section-en) {
    width: 100%;
    margin: 0 0 17px;
    color: #5d6962;
    font-size: 15px;
    line-height: 2.1;
}


/* =========================================================
   FAQ
========================================================= */

.prevention-faq {
    border-top: 1px solid #d9dfdb;
}

.prevention-faq details {
    border-bottom: 1px solid #d9dfdb;
}

.prevention-faq summary {
    position: relative;
    padding: 25px 60px 25px 50px;
    color: #34473c;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.7;
    cursor: pointer;
    list-style: none;
}

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

.prevention-faq summary::before {
    content: "Q";
    position: absolute;
    top: 21px;
    left: 10px;
    color: #62806f;
    font-family: Georgia, serif;
    font-size: 23px;
    font-weight: 400;
}

.prevention-faq summary::after {
    content: "+";
    position: absolute;
    top: 21px;
    right: 15px;
    color: #668073;
    font-size: 22px;
    font-weight: 300;
}

.prevention-faq details[open] summary::after {
    content: "−";
}

.prevention-faq details > div {
    padding: 0 50px 25px;
}

.prevention-faq details p {
    margin: 0;
    color: #626e67;
    font-size: 14px;
    line-height: 2;
}


/* =========================================================
   CLOSING
========================================================= */

.prevention-closing {
    padding: 65px 0;
    background: #405a4d;
}

.prevention-closing .section-en {
    color: #b7cabf;
}

.prevention-main .prevention-closing h2 {
    margin-bottom: 25px;
    color: #fff;
}

.prevention-closing__inner > p:not(.section-en) {
    width: 100%;
    margin: 0 0 17px;
    color: #e3ebe6;
    font-size: 15px;
    line-height: 2.1;
}


/* =========================================================
   RESERVATION
========================================================= */

.prevention-reservation {
    padding: 55px 0;
    background: #fff;
}

.prevention-reservation__grid {
    display: grid;
    grid-template-columns: 1fr 580px;
    gap: 55px;
    align-items: center;
}

.prevention-reservation__content h2 {
    margin-bottom: 15px;
}

.prevention-reservation__content > p:not(.section-en) {
    margin: 0;
    color: #606c65;
    font-size: 14px;
    line-height: 2;
}

.prevention-reservation__frame {
    width: 100%;
}

.prevention-reservation__frame iframe {
    display: block;
    width: 100%;
    height: 210px;
    border: 0;
}


/* =========================================================
   TABLET
========================================================= */

@media (max-width: 960px) {

    .prevention-intro__grid,
    .airflow-lead__grid,
    .airflow-about,
    .prevention-image-text,
    .implant-maintenance-grid {
        gap: 35px;
    }

    .care-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .prevention-reservation__grid {
        grid-template-columns: 1fr;
    }

}


/* =========================================================
   SMARTPHONE
========================================================= */

@media (max-width: 767px) {

    .prevention-main .container {
        width: calc(100% - 36px);
    }

    .prevention-main .section {
        padding: 50px 0;
    }

    .prevention-main .section-heading {
        margin-bottom: 35px;
    }

    .prevention-main .section-heading h2,
    .prevention-main .prevention-intro h2,
    .prevention-main .prevention-image-text h2,
    .prevention-main .airflow-lead h2,
    .prevention-main .implant-maintenance-section h2,
    .prevention-main .frequency-section h2,
    .prevention-main .prevention-closing h2,
    .prevention-main .prevention-reservation h2 {
        font-size: 24px;
        line-height: 1.6;
    }


    /* INTRO */

    .prevention-intro {
        padding-top: 55px !important;
    }

    .prevention-intro__grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .prevention-intro__image {
        order: -1;
    }

    .prevention-intro__image img {
        height: auto;
        aspect-ratio: 4 / 3;
    }

    .prevention-intro__content > p:not(.section-en) {
        font-size: 14px;
        line-height: 2;
    }


    /* AIRFLOW LEAD */

    .airflow-lead {
        padding: 50px 0;
    }

    .airflow-lead__grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .airflow-lead__image {
        order: -1;
    }

    .airflow-lead__image img {
        height: auto;
        aspect-ratio: 4 / 3;
    }


    /* CONCERNS */

    .concern-grid {
        grid-template-columns: 1fr;
    }


    /* IMAGE TEXT */

    .prevention-image-text {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .prevention-image-text--reverse .prevention-image-text__image,
    .prevention-image-text--reverse .prevention-image-text__content {
        order: initial;
    }

    .prevention-image-text__image img {
        height: auto;
        aspect-ratio: 4 / 3;
    }


    /* AIRFLOW ABOUT */

    .airflow-about {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .airflow-about__image img {
        height: auto;
        aspect-ratio: 4 / 3;
    }

    .airflow-about__content h3 {
        font-size: 21px;
    }


    /* FEATURES */

    .feature-item {
        grid-template-columns: 65px minmax(0, 1fr);
        gap: 10px;
        padding: 25px 0;
    }

    .feature-item__number {
        font-size: 27px;
    }


    /* TABLE */

    .compare-table th,
    .compare-table td {
        padding: 16px;
        font-size: 13px;
    }


    /* IMPLANT */

    .implant-maintenance-section {
        padding: 50px 0;
    }

    .implant-maintenance-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .implant-maintenance-image {
        order: -1;
    }

    .implant-maintenance-image img {
        height: auto;
        aspect-ratio: 4 / 3;
        object-fit: cover;
    }


    /* CARE */

    .care-grid {
        grid-template-columns: 1fr;
    }

    .care-card {
        min-height: 0;
    }


    /* FLOW */

    .flow-item {
        grid-template-columns: 65px minmax(0, 1fr);
        padding: 25px 0;
    }

    .flow-item__number {
        font-size: 27px;
    }

    .flow-item--airflow {
        padding: 25px 18px;
    }


    /* FREQUENCY */

    .frequency-section {
        padding: 50px 0;
    }


    /* FAQ */

    .prevention-faq summary {
        padding: 22px 45px 22px 40px;
    }

    .prevention-faq summary::before {
        left: 5px;
    }

    .prevention-faq summary::after {
        right: 5px;
    }

    .prevention-faq details > div {
        padding: 0 15px 23px 40px;
    }


    /* CLOSING */

    .prevention-closing {
        padding: 50px 0;
    }


    /* RESERVATION */

    .prevention-reservation {
        padding: 50px 0;
    }

    .prevention-reservation__grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .prevention-reservation__frame iframe {
        width: 100%;
        height: 230px;
    }

}