:root {
    --color-primary: #007bff;
    --color-secondary: #0fa6fd;
    --color-gray: #666666;
    --color-white: #ffffff;
    --color-black: #1a1919;
    /* --secondary-color: #0fa6fd; */
    --background-color-primary: #007bff;
    --background-color-secondary: #ffffff;
    --background-color-tertiary: #edf6ff;
    --background-color-quaternary: #f8f8f8;
    /* #e9f0fe */
    /* #f8fafd */

    --color-line: #06c755;

    --fontsize-1: clamp(46px, 2vw, 58px);
    --fontsize-2: clamp(40px, 2vw, 46px);
    --fontsize-3: clamp(28px, 2vw, 32px);
    --fontsize-4: clamp(20px, 2vw, 22px);
    --fontsize-default: clamp(18px, 2vw, 18px);
}

body {
    margin: 0;
    font-family: 'Noto Sans JP', sans-serif;
    /* 'Roboto','sans-serif', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', */
        /* 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue'; */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: #fff;
    color: #1a1919;
    /* font-size: lamp(1.5rem, calc(1rem + 0.625vw), 1.7rem); */
    font-size: var(--fontsize-default);
}
body h1, h2, h3, h4, h5, h6 {
    margin: 0;
    padding: 0;
}

code {
    font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New', monospace;
}

ol {
    margin-left: 30px;
    padding-left: 30px;
    color: black;
    list-style-type: decimal;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ul-construction-point ul{
    list-style: georgian inside url('/assets/image/icons/hammer-tool.svg');
    margin-left: 30px;
    /* padding-left: 30px; */
    text-indent: -2em;
    padding-left: 2em;
}

.primary-color {
    color: var(--color-primary);
}

.primary-background-color {
    background-color: var(--background-color-primary);
}

.secondary-background-color {
    background-color: var(--background-color-secondary);
}

.tertiary-background-color {
    background-color: var(--background-color-tertiary);
}

.quaternary-background-color {
    background-color: var(--background-color-quaternary);
}
.main-container {

}

.chapter-container {
    padding-top: 3.0em;
    padding-bottom: 3.0em;
    padding-left: 8%;
    padding-right: 8%;
}
.chapter-container .title {
    font-size: var(--fontsize-2);
    font-weight: 800;
    margin: 10px;
}

.section-container {
    margin-top: 1.0em;
    margin-bottom: 1.0em;
    padding-top: 3.0em;
    padding-bottom: 3.0em;
    padding-left: 2%;
    padding-right: 2%;
}

.section-container .title {
    font-size: var(--fontsize-3);
    font-weight: 800;
    margin: 10px;
}

.paragraph-container {
    padding: 10px;
}

.paragraph-container .title {
    font-size: var(--fontsize-4);
    font-weight: 800;
    margin: 10px;
}
.subparagraph-container {

}

.flex-container {
    width: 100%;
    display: flex;
    /* flex-wrap:wrap;  */
    /* flex-direction: column; */
    gap: 40px;
    justify-content:space-between;/*両端揃え*/
}

.flex-container .small-container{
    width: 40%;
    border-radius: 15px;
}

.flex-container .large-container {
    width: 60%;
}

@media (max-width: 768px) {
    .flex-container {
        flex-direction: column;
    }
    .flex-container .small-container {
        width: 100%;
        border-radius: 15px;
    }
    .flex-container .large-container {
        width: 100%;
    }
}

.sub-header-container {
    padding-top: 13.0em;
    padding-bottom: 3.0em;
    padding-left: 10%;
    padding-right: 10%;
    background-color: var(--background-color-primary);
}

.sub-header-container .title {
    font-size: var(--fontsize-1);
    font-weight: 800;
    color: var(--color-white);
    margin: 10px;
}

@media (max-width: 768px) {
    .sub-header-container {
        padding-top: 10.0em;
    }
}

.container-radius {
    border-radius: 15px;
}

.container-set {
    /* background-color: var(--background-color-tertiary); */
    border-radius: 15px;
}

/* センテンス */
.perfectly-centered-sentence {
    /* justify-content: center;
    align-items: center; */
    text-align: center;
}

.sentence {
    margin-top: 15px;
    margin-bottom: 15px;
}

/* コンテントボックス */
.content-single-box {
    display: grid;
    padding-top: 1.0em;
    padding-bottom: 1.0em;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .content-single-box {
        grid-template-columns: repeat(1, 1fr);
    }
}

@media (min-width: 1024px) {
    .content-single-box {
        grid-template-columns: repeat(1, 1fr);
    }
}

.content-double-box {
    display: grid;
    padding-top: 1.0em;
    padding-bottom: 1.0em;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .content-double-box {
        grid-template-columns: repeat(1, 1fr);
    }
}

@media (min-width: 1024px) {
    .content-double-box {
        grid-template-columns: repeat(2, 1fr);
    }
}
.content-triple-box {
    display: grid;
    padding-top: 1.0em;
    padding-bottom: 1.0em;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .content-triple-box {
        grid-template-columns: repeat(1, 1fr);
    }
}

@media (min-width: 1024px) {
    .content-triple-box {
        grid-template-columns: repeat(3, 1fr);
    }
}

.content-box .card {
    /* background-color: var(--color-white); */
    border-radius: 15px;
    padding: 1.5rem;
    /* box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05); */
    /* transition: transform 0.3s ease, box-shadow 0.3s ease; */
}

.content-box .card .title {
    color: var(--color-primary);
    font-weight: 800;
    margin-bottom: 0.75rem;
    font-size: var(--fontsize-4);
}

.content-box .card p {
    /* font-size: 0.95rem; */
}

.bullet-points {
    list-style: inside;
    padding: 10px;
}

.bullet-points li::marker {
    color: var(--background-color-primary);
}


/* 導入の流れ */
.intro-flow {
    display: grid;
    padding-top: 1.0em;
    padding-bottom: 1.0em;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .intro-flow {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .intro-flow {
        grid-template-columns: repeat(4, 1fr);
    }
}

.intro-flow .card {
    background-color: var(--color-white);
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.intro-flow .card h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    /* font-size: 1.2rem; */
}

.intro-flow .card p {
    /* font-size: 0.95rem; */
}

/* 画像 */

.image-section .main-image {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    background-color: var(--color-white);
    border-radius: 15px;
}

.image-section .main-image img {
    /* max-width: 100%;
    max-height: 100%;
    object-fit: contain; */
    height: 500px;        /* 最大縦サイズを制限 */
    /* height: auto;             高さは自動（画像比率維持） */
    max-width: 100%;     /* 横は親からはみ出さないように制限 */
    width: auto;              /* 幅も自動で調整（比率を壊さない） */
    display: block;
    margin: 0 auto;
    border-radius: 15px;
}

.image-section .thumbnails {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.image-section .thumbnails img {
    width: 30%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border 0.3s;
    background-color: var(--color-white);
}

.thumbnails img.active {
    border: 2px solid #007bff;
}

@media (max-width: 768px) {
    .image-section .main-image img {
        height: 500px;        /* 最大縦サイズを制限 */
        max-width: 100%;     /* 横は親からはみ出さないように制限 */
        width: auto;              /* 幅も自動で調整（比率を壊さない） */
        display: block;
        margin: 0 auto;
        border-radius: 15px;
    }
}

.image-section-small .main-image {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    background-color: var(--color-white);
    border-radius: 15px;
}

.image-section-small .main-image img {
    /* max-width: 100%;
    max-height: 100%;
    object-fit: contain; */
    height: 300px;        /* 最大縦サイズを制限 */
    /* height: auto;             高さは自動（画像比率維持） */
    max-width: 100%;     /* 横は親からはみ出さないように制限 */
    width: auto;              /* 幅も自動で調整（比率を壊さない） */
    display: block;
    margin: 0 auto;
    border-radius: 15px;
}

@media (max-width: 768px) {
    .image-section-small .main-image img {
        height: 300px;        /* 最大縦サイズを制限 */
        max-width: 100%;     /* 横は親からはみ出さないように制限 */
        width: auto;              /* 幅も自動で調整（比率を壊さない） */
        display: block;
        margin: 0 auto;
        border-radius: 15px;
    }
}

.image-container {
    /* margin: auto; */
}

.full-wide-image {
    width: 100%;
    height: auto;
}

.space-50 {
    margin-top: 50px;
}

.space-500 {
    margin-top: 500px;
}

/* 左右交互に画像を表示 */
.alternate-container {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.alternate-container .card {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  border-radius: 12px;
  gap: 40px;
  margin-top: 10px;
  margin-bottom: 10px;
  /* box-shadow: 0 4px 12px rgba(0,0,0,0.05); */
  overflow: hidden;
}

.alternate-container .card.reverse {
  flex-direction: row-reverse;
}

.alternate-container .card-img {
  width: 50%;
  object-fit: cover;
}

.alternate-container .card-content {
  width: 50%;
  /* padding: 24px; */
  display: flex;
  flex-direction: column;
  justify-content: center;
}
@media (max-width: 768px) {
  .alternate-container .card {
    gap: 10px;
  }

  .alternate-container .card, .alternate-container .card.reverse {
    flex-direction: column;
  }

  .alternate-container .card-img, .alternate-container .card-content {
    width: 100%;
  }

  .alternate-container .card-img {
    height: auto;
  }
}

.card-content .title {
    font-size: var(--fontsize-3);
    font-weight: 800;
    color: var(--color-primary);
    margin: 10px;
}

/* 境界線 */
.boundary {
    /* height: 1px; */
    border-bottom: 1px solid #ccc;
    background-color: #ccc;
    margin: 0 32px;
}

/* ワイドボックス */
.wide-box {
    font-size: var(--fontsize-4);
    width: 90%;
    margin: auto;
    color: var(--color-primary);

    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
}

/* リンクボックス */
.wide-link-box {
    text-decoration: none;

    font-size: var(--fontsize-4);
    width: 90%;
    /* height: 50px; */
    margin: auto;
    color: var(--color-white);
    background-color: var(--color-primary);
    border: 2px solid var(--color-primary);
    border-radius: 30px;

    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
}

.wide-link-box .button-icon {
    background-color: rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.wide-link-box:hover .button-icon {
    background-color: var(--color-primary);
}

.wide-link-box .button-icon img {
    width: 32px;
    height: 32px;
    color: var(--color-white);
}

.wide-link-box:hover {
    color: var(--color-primary);
    background-color: var(--color-white);
    border: 2px solid var(--color-primary);
}

.address-link {
    text-decoration: none;
    color: var(--color-primary);
}

.background-color-line {
    background-color: var(--color-line);
    border: 2px solid var(--color-line);
}

.background-color-line:hover {
    color: var(--color-line);
    background-color: var(--color-white);
    border: 2px solid var(--color-line);
}

.background-color-line:hover .button-icon {
    background-color: var(--color-line);
}

/* メイン導入 */
.main-intro {
    /* background: url('camera-bg.jpg') center/cover no-repeat; */
    color: var(--color-gray);
    text-align: center;
    /* 通常時 */
    padding: 50vh 20px 60px;
    /* スクショ用 */
    /* padding: 280px 20px 140px; */
}

.main-intro .title {
    font-size: var(--fontsize-1);
    font-weight: 800;
}
.main-intro .subtitle {
    font-size: var(--fontsize-3);
    font-weight: 600;
    margin-top: 10px;
    position: relative;
    display: inline-block;
    padding: 0 1em;
}
/* .main-intro .title .subtitle::before,
.main-intro .title .subtitle::after {
    content: "~";
    padding: 0 0px;
} */

.main-intro .content {
    padding-top: 30px;
    padding-bottom: 30px;
    padding-left: 10px;
    padding-right: 10px;
}
/* .main-intro .title .subtitle::before {
    position: absolute;
    left: 0;
    transform: translateX(-100%);
}

.main-intro .title .subtitle::after {
    position: absolute;
    right: 0;
    transform: translateX(100%);
} */

@media (max-width: 768px) {
    .main-intro {
        padding: 30vh 20px 60px;
    }
}

/* 専門家によるサポート */
.circle-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.circle {
    /* background: linear-gradient(135deg, #0a91c1, #0cc5cb); */
    background-color: var(--background-color-primary);
    width: 300px;
    height: 300px;
    border-radius: 50%;
    color: white;
    padding: 80px 20px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    box-sizing: border-box;
    flex-shrink: 0;
    flex-grow: 0;
    text-align: center;
}

.circle h3 {
    font-size: var(--fontsize-3);
    margin-bottom: 12px;
    font-style: italic;
    opacity: 0.95;
}

.qualifications {
    font-size: 15px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 6px;
    text-align: left;
}

.circle p {
    font-size: 15px;
    margin: 0 0 6px 0;

    white-space: pre-line;
}

.x-symbol {
    width: 60px;
    height: 60px;
    position: relative;
    flex-shrink: 0;
}

.x-symbol::before,
.x-symbol::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 60px;
    height: 2px;
    background-color: #aaa;
    transform-origin: center;
}

.x-symbol::before {
    transform: translate(-50%, -50%) rotate(45deg);
}

.x-symbol::after {
    transform: translate(-50%, -50%) rotate(-45deg);
}
@media (max-width: 768px) {
    .circle-container {
        flex-direction: column;
        gap: 20px;
    }

    .circle {
        width: 90%;
        height: auto;
        border-radius: 24px;
        padding: 24px;
    }

    .x-symbol {
        margin: 10px auto;
    }
}

/* Q&A */
.qa-card {
    /* background: #fff; */
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    margin-bottom: 20px;
    overflow: hidden;
    transition: box-shadow 0.3s;
}

.qa-card:hover {
    box-shadow: 0 6px 14px rgba(0,0,0,0.1);
}

.qa-question {
    padding: 20px 40px 20px 60px;
    position: relative;
    font-weight: bold;
    font-size: 18px;
    background: var(--background-color-tertiary);
    /* background: #e3f2fd; */
    cursor: pointer;
}

.qa-question::before {
    content: "Q";
    position: absolute;
    left: 20px;
    top: 20px;
    background: var(--color-primary);
    color: var(--color-white);
    width: 24px;
    height: 24px;
    text-align: center;
    border-radius: 50%;
    font-size: 14px;
    line-height: 24px;
}

.qa-answer {
    display: none;
    padding: 20px 20px 20px 60px;
    position: relative;
    background: #fff;
}

.qa-answer::before {
    content: "A";
    position: absolute;
    left: 20px;
    top: 20px;
    background: var(--color-line);
    color: var(--color-white);
    width: 24px;
    height: 24px;
    text-align: center;
    border-radius: 50%;
    font-size: 14px;
    line-height: 24px;
}

.qa-card.open .qa-answer {
    display: block;
}

.qa-question::after {
    content: "＋";
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 20px;
    transition: transform 0.3s;
}

.qa-card.open .qa-question::after {
    content: "−";
}

.qa-card ul {
    list-style:disc;
    padding-left: 20px;
}

.qa-card dl {
}

.qa-card dl dt {
  font-weight: bold;
  margin-top: 1em;
  /* color: #333; */
}

.qa-card dl dd {
  margin-left: 1em;
  margin-bottom: 0.5em;
  line-height: 1.6;
}

@media (max-width: 768px) {
    .qa-card dl dd {
        margin-left: 0em;
    }
}
.qa-card dl dd + dd {
  margin-top: 0; /* 複数行の説明の間は余白なし */
}


/* フッター */
footer {
    background: var(--background-color-primary);
    color: var(--color-white);
    text-align: center;
    padding: 24px 0;
    font-size: 0.9rem;
}
.sns-icons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
    /* background-color: var(--color-white); */
}

.sns-icons a img {
    height: 40px;
    /* border-radius: 50%; */
}

footer p {
    font-size: 14px;
    color: #ccc;
    margin: 0;
}

/* iframe */
.video-container {
  position: relative;
  max-width: 560px;
  width: 100%;
  margin: 30px auto;
  padding-bottom: 56.25%;
  height: 0; 
}
.video-container iframe {
  position: absolute;
  width: 100%;
  height: 100%; 
  left: 0;
  top: 0;
}