:root {
    --bg-color    : #f0f0f0;
    --border-color: #EDC8D8;
}

@media (min-width: 769px) {
    .is-sp {
        display: none;
    }
}

@media (max-width: 768px) {
    .is-pc {
        display: none;
    }
}

.p-text--sub {
    font-size: 0.9em;
}

.p-indent1 {
    display     : inline-block;
    padding-left: 1em;
    text-indent : -1em;
}

/* 横並びボタン */
.p-buttons {
    display        : flex;
    flex-wrap      : wrap;
    justify-content: center;
    gap            : 3rem;

    @media screen and (max-width: 768px) {
        gap: 1rem;
    }
}

.p-text--bold {
    font-weight: bold;
}

.p-text--small {
    font-size: 0.9em;
}

.p-text--large {
    font-size: 1.25em;
}

/* margin-top */
.mt_0 {
    margin-top: 0 !important;
}

.mt_10 {
    margin-top: 10px !important;
}

.mt_20 {
    margin-top: 20px !important;
}

.mt_30 {
    margin-top: 30px !important;
}

.mt_40 {
    margin-top: 40px !important;
}

.mt_50 {
    margin-top: 50px !important;
}

.mt_60 {
    margin-top: 60px !important;

    @media screen and (max-width: 768px) {
        margin-top: 30px !important;
    }
}

.mt_90 {
    margin-top: 90px !important;

    @media screen and (max-width: 768px) {
        margin-top: 45px !important;
    }
}

/* margin-bottom */
.mb_0 {
    margin-bottom: 0 !important;
}

.mb_10 {
    margin-bottom: 10px !important;
}

.mb_20 {
    margin-bottom: 20px !important;
}

.mb_30 {
    margin-bottom: 30px !important;
}

.mb_40 {
    margin-bottom: 40px !important;
}

.mb_50 {
    margin-bottom: 50px !important;
}

.mb_60 {
    margin-bottom: 60px !important;

    @media screen and (max-width: 768px) {
        margin-bottom: 30px !important;
    }
}

.mb_90 {
    margin-bottom: 90px !important;

    @media screen and (max-width: 768px) {
        margin-bottom: 45px !important;
    }
}

.p-text-link {
    color          : #007bff;
    text-decoration: underline;
}

.p-center {
    width        : fit-content;
    margin-inline: auto;

    @media screen and (max-width: 768px) {
        width: 100%;
    }
}

.p-right {
    margin-inline: auto 0;

    @media screen and (max-width: 768px) {
        margin-inline: auto;
    }
}

.p-left {
    width       : fit-content;
    margin-right: auto;

    @media screen and (max-width: 768px) {
        margin-inline: auto;
    }
}

/* 色付きボックス */
.p-box-color,
.p-box-color--white,
.p-box-border {
    padding      : 2em;
    border-radius: 5px;

    @media screen and (max-width: 768px) {
        padding: 1em;
    }
}

.p-box-color {
    background-color: var(--bg-color);
}

.p-box-color--white {
    background-color: #fff;
}

.p-box-border {
    border: 1px solid var(--border-color);
}

/* 番号付きリスト */
ul.p-pattern__list__number {
    list-style   : none;
    counter-reset: number;
}

ul.p-pattern__list__number li {
    position     : relative;
    padding-left : 2em;
    margin-bottom: 1.2em;
    line-height  : 1.3em;
}

ul.p-pattern__list__number li::before {
    content          : counter(number);
    counter-increment: number;
    position         : absolute;
    left             : 0;
    top              : 0;
    width            : 1.5em;
    height           : 1.5em;
    line-height      : 1.5em;
    border-radius    : 50%;
    background       : #9BB4E0;
    color            : #fff;
    text-align       : center;
}
/* The shared main.css now supplies Refine patterns, grid, typography and buttons.
   Only this page's image proportions and content spacing need adjustments. */
#whitening-content .pattern__cont__text p + p {
  margin-top: 1em;
}
#whitening-content .pattern__block__wrap + .pattern__block__wrap {
  margin-top: 60px;
}
#whitening-content .pattern__nav ul li {
  flex-basis: 25%;
}
#whitening-content .pattern__nav .btn {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
}
#whitening-content .pattern__pic .dnfix__thumb {
  padding-top: 0;
}
#whitening-content .pattern__pic .dnfix__thumb img {
  position: relative;
  height: auto;
  object-fit: contain;
}
#whitening-content .pattern__heading {
  line-height: 1.5;
  font-weight: 400;
}
#whitening-content .pattern__cont__title {
  line-height: 1.5;
  font-weight: 400;
  border-color: var(--primary);
}
#whitening-content section[id] {
  scroll-margin-top: 120px;
}
@media (max-width: 767px) {
  #whitening-content .pattern__nav ul li {
    flex-basis: 100%;
    padding: 10px;
  }
}

/* 透過画像には画像背面の装飾背景を表示しない。 */
#whitening-content .thumb-style--transparent.thumb-style--left::before,
#whitening-content .thumb-style--transparent.thumb-style--right::before {
  content: none;
}

/* 本文セクションを交互に色分けし、見出しボタン群を中央に配置する。 */
#whitening-content .page-content > .pattern__block:nth-of-type(even) {
  background-color: #f9f8f3;
}
#whitening-content .pattern__nav ul {
  justify-content: center;
}

#whitening-content .p-box-color { --bg-color: #f0eee4; }
#whitening-content .p-pattern__list__number li::before { background: #C9BD88; }
#whitening-content .whitening-price-table table { width: 100%; min-width: 0; }
#whitening-content .whitening-price-table td { text-align: center; }
/* 続く2つのボタンを中央にまとめ、SPでは縦に並べる。 */
#whitening-content .whitening-actions {
  gap: 2rem;
  flex-wrap: nowrap;
}
#whitening-content .whitening-actions .btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc((100% - 2rem) / 2);
  max-width: 270px;
  min-width: 0;
  padding-inline: 1em;
  text-align: center;
}
@media (max-width: 767px) {
  #whitening-content .whitening-actions {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
  #whitening-content .whitening-actions .btn {
    width: 100%;
  }
}