@charset "UTF-8";

.swing-307-body .swing-307-page {
    --swing-307-red: #c8161d;
    --swing-307-red-dark: #9f1117;
    --swing-307-navy: #24394b;
    --swing-307-blue: #155f8d;
    --swing-307-border: #d9e1e5;
    --swing-307-light: #f5f8f9;
    color: #333;
    font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
    font-size: 16px;
    line-height: 1.9;
    overflow-wrap: anywhere;
}

.swing-307-body .swing-307-page *,
.swing-307-body .swing-307-page *::before,
.swing-307-body .swing-307-page *::after {
    box-sizing: border-box;
}

.swing-307-body .swing-307-page a {
    color: #0d5d8c;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

.swing-307-body .swing-307-page a:hover,
.swing-307-body .swing-307-page a:focus-visible {
    color: #8f1015;
}

.swing-307-body .swing-307-page p {
    margin: 0 0 1.05em;
}

.swing-307-body .swing-307-page .pageTitle {
    margin: 0 0 24px;
    padding: 0 0 14px;
    border-bottom: 4px solid var(--swing-307-red);
    color: var(--swing-307-navy);
    font-size: clamp(1.7rem, 3vw, 2.35rem);
    line-height: 1.45;
}

.swing-307-body .swing-307-hero {
    margin: 0 0 30px;
    overflow: hidden;
    border-radius: 15px;
    background: #eef1f1;
    box-shadow: 0 8px 28px rgba(35, 52, 62, .12);
}

.swing-307-body .swing-307-hero img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    object-fit: cover;
}

.swing-307-body .swing-307-lead {
    margin: 0 0 28px;
    padding: 28px 30px;
    border: 1px solid #e1d4d4;
    border-left: 7px solid var(--swing-307-red);
    border-radius: 12px;
    background: #fffafa;
}

.swing-307-body .swing-307-eyebrow {
    margin: 0 0 8px;
    color: var(--swing-307-red-dark);
    font-weight: 800;
    letter-spacing: .04em;
}

.swing-307-body .swing-307-lead h2 {
    margin: 0 0 14px;
    color: var(--swing-307-navy);
    font-size: clamp(1.3rem, 2.3vw, 1.75rem);
    line-height: 1.55;
}

.swing-307-body .swing-307-lead p:last-child,
.swing-307-body .swing-307-summary ul,
.swing-307-body .swing-307-note p:last-child,
.swing-307-body .swing-307-cta p:last-of-type {
    margin-bottom: 0;
}

.swing-307-body .swing-307-summary {
    margin: 0 0 28px;
    padding: 24px 28px;
    border: 1px solid #cddde6;
    border-radius: 12px;
    background: #f4f9fc;
}

.swing-307-body .swing-307-summary h2 {
    margin: 0 0 12px;
    color: var(--swing-307-navy);
    font-size: 1.25rem;
}

.swing-307-body .swing-307-summary ul {
    padding-left: 1.45em;
}

.swing-307-body .swing-307-toc {
    margin: 0 0 42px;
    padding: 24px 28px;
    border: 1px solid var(--swing-307-border);
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 5px 18px rgba(45, 65, 78, .05);
}

.swing-307-body .swing-307-toc__title {
    margin: 0 0 10px;
    color: var(--swing-307-navy);
    font-size: 1.15rem;
    font-weight: 800;
}

.swing-307-body .swing-307-toc ol {
    margin: 0;
    padding-left: 1.5em;
}

.swing-307-body .swing-307-section,
.swing-307-body .swing-307-related {
    margin: 0 0 46px;
    scroll-margin-top: 20px;
}

.swing-307-body .swing-307-section > h2,
.swing-307-body .swing-307-related > h2 {
    position: relative;
    margin: 0 0 22px;
    padding: 12px 16px 13px 20px;
    border-bottom: 2px solid var(--swing-307-red);
    background: #f6f8f9;
    color: var(--swing-307-navy);
    font-size: clamp(1.35rem, 2.4vw, 1.85rem);
    line-height: 1.45;
}

.swing-307-body .swing-307-section > h2::before,
.swing-307-body .swing-307-related > h2::before {
    position: absolute;
    inset: 0 auto 0 0;
    width: 6px;
    background: var(--swing-307-red);
    content: "";
}

.swing-307-body .swing-307-card-grid,
.swing-307-body .swing-307-support-grid,
.swing-307-body .swing-307-related-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.swing-307-body .swing-307-card-grid article {
    padding: 22px;
    border: 1px solid var(--swing-307-border);
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 5px 18px rgba(45, 65, 78, .045);
}

.swing-307-body .swing-307-card-grid article > span {
    display: inline-flex;
    width: 34px;
    height: 34px;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    border-radius: 50%;
    background: var(--swing-307-red);
    color: #fff;
    font-weight: 800;
}

.swing-307-body .swing-307-card-grid h3,
.swing-307-body .swing-307-note h3,
.swing-307-body .swing-307-steps h3,
.swing-307-body .swing-307-mistake-list h3 {
    margin: 0 0 9px;
    color: #263c4e;
    font-size: 1.08rem;
    line-height: 1.55;
}

.swing-307-body .swing-307-card-grid p,
.swing-307-body .swing-307-mistake-list p {
    margin-bottom: 0;
}

.swing-307-body .swing-307-note {
    margin-top: 22px;
    padding: 20px 22px;
    border: 1px dashed #d49624;
    border-radius: 12px;
    background: #fffaf0;
}

.swing-307-body .swing-307-steps {
    display: grid;
    gap: 14px;
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
}

.swing-307-body .swing-307-steps li {
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
    padding: 20px 22px;
    border: 1px solid var(--swing-307-border);
    border-radius: 12px;
    background: #fff;
}

.swing-307-body .swing-307-steps__number {
    display: flex;
    width: 50px;
    height: 50px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--swing-307-navy);
    color: #fff;
    font-weight: 800;
    line-height: 1;
}

.swing-307-body .swing-307-steps p {
    margin: 0;
}

.swing-307-body .swing-307-table-wrap {
    overflow-x: auto;
    margin: 20px 0 24px;
    border: 1px solid #d5dfe4;
    border-radius: 12px;
    background: #fff;
    -webkit-overflow-scrolling: touch;
}

.swing-307-body .swing-307-table {
    width: 100%;
    min-width: 720px;
    border-collapse: collapse;
}

.swing-307-body .swing-307-table th,
.swing-307-body .swing-307-table td {
    padding: 14px 16px;
    border-right: 1px solid #dfe6e9;
    border-bottom: 1px solid #dfe6e9;
    text-align: left;
    vertical-align: top;
}

.swing-307-body .swing-307-table th:last-child,
.swing-307-body .swing-307-table td:last-child {
    border-right: 0;
}

.swing-307-body .swing-307-table tbody tr:last-child th,
.swing-307-body .swing-307-table tbody tr:last-child td {
    border-bottom: 0;
}

.swing-307-body .swing-307-table thead th {
    background: var(--swing-307-navy);
    color: #fff;
}

.swing-307-body .swing-307-table tbody th {
    width: 18%;
    background: #f5f7f8;
    color: var(--swing-307-navy);
}

.swing-307-body .swing-307-mistake-list {
    display: grid;
    gap: 14px;
}

.swing-307-body .swing-307-mistake-list article {
    padding: 20px 22px;
    border-left: 5px solid #d49624;
    border-radius: 8px;
    background: #fffaf0;
}

.swing-307-body .swing-307-checklist {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin: 20px 0;
}

.swing-307-body .swing-307-checklist label {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    padding: 15px 16px;
    border: 1px solid var(--swing-307-border);
    border-radius: 10px;
    background: #fff;
    cursor: pointer;
}

.swing-307-body .swing-307-checklist input {
    flex: 0 0 auto;
    width: 18px;
    height: 18px;
    margin-top: .35em;
    accent-color: var(--swing-307-red);
}

.swing-307-body .swing-307-small {
    padding: 16px 18px;
    border-radius: 10px;
    background: var(--swing-307-light);
    font-size: .95rem;
}

.swing-307-body .swing-307-support-grid a,
.swing-307-body .swing-307-related-grid a {
    display: block;
    padding: 20px 22px;
    border: 1px solid var(--swing-307-border);
    border-radius: 12px;
    background: #fff;
    color: #263c4e;
    text-decoration: none;
    box-shadow: 0 5px 18px rgba(45, 65, 78, .045);
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.swing-307-body .swing-307-support-grid a:hover,
.swing-307-body .swing-307-support-grid a:focus-visible,
.swing-307-body .swing-307-related-grid a:hover,
.swing-307-body .swing-307-related-grid a:focus-visible {
    border-color: var(--swing-307-red);
    color: #263c4e;
    transform: translateY(-2px);
    box-shadow: 0 9px 24px rgba(45, 65, 78, .1);
}

.swing-307-body .swing-307-support-grid__label {
    display: inline-block;
    margin-bottom: 8px;
    padding: 3px 9px;
    border-radius: 999px;
    background: #edf4f7;
    color: var(--swing-307-blue);
    font-size: .82rem;
    font-weight: 800;
}

.swing-307-body .swing-307-support-grid strong,
.swing-307-body .swing-307-related-grid strong {
    display: block;
    margin-bottom: 8px;
    color: var(--swing-307-navy);
    font-size: 1.05rem;
    line-height: 1.55;
}

.swing-307-body .swing-307-support-grid p {
    margin: 0;
    color: #555;
    font-size: .94rem;
}

.swing-307-body .swing-307-related-grid span {
    display: block;
    color: #555;
    font-size: .94rem;
    line-height: 1.75;
}

.swing-307-body .swing-307-faq details {
    margin-bottom: 12px;
    border: 1px solid var(--swing-307-border);
    border-radius: 10px;
    background: #fff;
}

.swing-307-body .swing-307-faq summary {
    position: relative;
    padding: 17px 46px 17px 20px;
    color: var(--swing-307-navy);
    font-weight: 800;
    cursor: pointer;
    list-style: none;
}

.swing-307-body .swing-307-faq summary::-webkit-details-marker {
    display: none;
}

.swing-307-body .swing-307-faq summary::after {
    position: absolute;
    top: 50%;
    right: 20px;
    content: "+";
    color: var(--swing-307-red);
    font-size: 1.45rem;
    transform: translateY(-50%);
}

.swing-307-body .swing-307-faq details[open] summary::after {
    content: "−";
}

.swing-307-body .swing-307-faq details p {
    margin: 0;
    padding: 0 20px 18px;
}

.swing-307-body .swing-307-cta {
    margin: 50px 0 20px;
    padding: 34px 32px;
    border-radius: 16px;
    background: linear-gradient(135deg, #263f53, #172b3b);
    color: #fff;
    text-align: center;
}

.swing-307-body .swing-307-cta__label {
    margin-bottom: 8px;
    color: #ffd6d8;
    font-weight: 800;
    letter-spacing: .04em;
}

.swing-307-body .swing-307-cta h2 {
    margin: 0 0 14px;
    color: #fff;
    font-size: clamp(1.35rem, 2.4vw, 1.85rem);
    line-height: 1.5;
}

.swing-307-body .swing-307-cta__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    margin-top: 22px;
}

.swing-307-body .swing-307-button {
    display: inline-flex;
    min-height: 52px;
    align-items: center;
    justify-content: center;
    padding: 13px 24px;
    border: 2px solid transparent;
    border-radius: 999px;
    font-weight: 800;
    line-height: 1.4;
    text-align: center;
    text-decoration: none !important;
    transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}

.swing-307-body .swing-307-button--primary,
.swing-307-body .swing-307-button--primary:visited {
    border-color: var(--swing-307-red);
    background-color: var(--swing-307-red);
    color: #fff;
}

.swing-307-body .swing-307-button--primary:hover,
.swing-307-body .swing-307-button--primary:focus-visible {
    border-color: #fff;
    background-color: #fff;
    color: var(--swing-307-red-dark);
    transform: translateY(-1px);
}

.swing-307-body .swing-307-button--secondary,
.swing-307-body .swing-307-button--secondary:visited {
    border-color: #fff;
    background-color: transparent;
    color: #fff;
}

.swing-307-body .swing-307-button--secondary:hover,
.swing-307-body .swing-307-button--secondary:focus-visible {
    border-color: #fff;
    background-color: #fff;
    color: #172b3b;
    transform: translateY(-1px);
}

.swing-307-body .swing-307-button:focus-visible,
.swing-307-body .swing-307-support-grid a:focus-visible,
.swing-307-body .swing-307-related-grid a:focus-visible,
.swing-307-body .swing-307-toc a:focus-visible,
.swing-307-body .swing-307-faq summary:focus-visible {
    outline: 3px solid #f5b642;
    outline-offset: 3px;
}

@media (max-width: 900px) {
    .swing-307-body .swing-307-card-grid,
    .swing-307-body .swing-307-support-grid,
    .swing-307-body .swing-307-related-grid,
    .swing-307-body .swing-307-checklist {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 650px) {
    .swing-307-body .swing-307-page {
        font-size: 15px;
        line-height: 1.85;
    }

    .swing-307-body .swing-307-page .pageTitle {
        margin-bottom: 18px;
        font-size: 1.62rem;
    }

    .swing-307-body .swing-307-hero {
        margin-bottom: 22px;
        border-radius: 10px;
    }

    .swing-307-body .swing-307-lead,
    .swing-307-body .swing-307-summary,
    .swing-307-body .swing-307-toc,
    .swing-307-body .swing-307-cta {
        padding: 21px 18px;
    }

    .swing-307-body .swing-307-section,
    .swing-307-body .swing-307-related {
        margin-bottom: 38px;
    }

    .swing-307-body .swing-307-section > h2,
    .swing-307-body .swing-307-related > h2 {
        padding: 10px 12px 11px 17px;
        font-size: 1.32rem;
    }

    .swing-307-body .swing-307-card-grid article,
    .swing-307-body .swing-307-support-grid a,
    .swing-307-body .swing-307-related-grid a {
        padding: 18px;
    }

    .swing-307-body .swing-307-steps li {
        grid-template-columns: 44px minmax(0, 1fr);
        gap: 12px;
        padding: 17px 16px;
    }

    .swing-307-body .swing-307-steps__number {
        width: 40px;
        height: 40px;
        font-size: .88rem;
    }

    .swing-307-body .swing-307-cta__buttons {
        display: grid;
        grid-template-columns: 1fr;
    }

    .swing-307-body .swing-307-button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .swing-307-body .swing-307-page .pageTitle {
        font-size: 1.48rem;
    }

    .swing-307-body .swing-307-lead h2,
    .swing-307-body .swing-307-cta h2 {
        font-size: 1.24rem;
    }

    .swing-307-body .swing-307-table {
        min-width: 650px;
    }
}