@charset "UTF-8";

.swing-253-body .swing-253-page {
    --s253-red: #d05b23;
    --s253-red-dark: #9f3e15;
    --s253-blue: #167f88;
    --s253-navy: #263e46;
    --s253-text: #2e393c;
    --s253-muted: #667477;
    --s253-line: #d9e2e1;
    --s253-soft: #f3f8f7;
    --s253-warm: #fbf6ef;
    color: var(--s253-text);
    font-family: "Noto Sans JP", sans-serif;
    line-height: 1.9;
}

.swing-253-body .swing-253-page,
.swing-253-body .swing-253-page * {
    box-sizing: border-box;
}

.swing-253-body .swing-253-page a {
    color: var(--s253-blue);
    text-decoration-thickness: 1px;
    text-underline-offset: 0.18em;
}

.swing-253-body .swing-253-page a:hover,
.swing-253-body .swing-253-page a:focus-visible {
    color: #075477;
}

.swing-253-body .swing-253-page a:focus-visible,
.swing-253-body .swing-253-page summary:focus-visible {
    outline: 3px solid rgba(10, 111, 158, 0.35);
    outline-offset: 3px;
}

.swing-253-body .swing-253-hero {
    margin: 0 0 32px;
    overflow: hidden;
    border: 1px solid #d8dedf;
    border-radius: 18px;
    background: #f5f4f0;
    box-shadow: 0 14px 34px rgba(36, 52, 58, 0.12);
}

.swing-253-body .swing-253-hero img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    object-fit: cover;
}

.swing-253-body .swing-253-lead {
    margin: 0 0 30px;
    padding: 34px 38px;
    border-left: 6px solid var(--s253-red);
    border-radius: 0 16px 16px 0;
    background: linear-gradient(135deg, #fff 0%, var(--s253-warm) 100%);
    box-shadow: 0 8px 24px rgba(35, 49, 55, 0.07);
}

.swing-253-body .swing-253-eyebrow,
.swing-253-body .swing-253-cta__label,
.swing-253-body .swing-253-final-cta__label {
    margin: 0 0 8px;
    color: var(--s253-red);
    font-family: "M PLUS 1 Code", monospace;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.12em;
}

.swing-253-body .swing-253-lead h2 {
    margin: 0 0 18px;
    color: var(--s253-navy);
    font-size: clamp(23px, 3vw, 33px);
    line-height: 1.45;
}

.swing-253-body .swing-253-lead p {
    margin: 0 0 13px;
}

.swing-253-body .swing-253-lead p:last-child {
    margin-bottom: 0;
}

.swing-253-body .swing-253-summary {
    margin: 0 0 30px;
    padding: 28px 32px;
    border: 1px solid #cfdadd;
    border-radius: 16px;
    background: #fff;
}

.swing-253-body .swing-253-summary h2 {
    margin: 0 0 15px;
    color: var(--s253-navy);
    font-size: 24px;
}

.swing-253-body .swing-253-summary ul {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.swing-253-body .swing-253-summary li {
    position: relative;
    padding-left: 31px;
}

.swing-253-body .swing-253-summary li::before {
    position: absolute;
    top: 0.48em;
    left: 3px;
    width: 14px;
    height: 8px;
    border-bottom: 3px solid var(--s253-red);
    border-left: 3px solid var(--s253-red);
    content: "";
    transform: rotate(-45deg);
}

.swing-253-body .swing-253-toc {
    margin: 0 0 46px;
    padding: 26px 30px;
    border-radius: 16px;
    background: var(--s253-navy);
    color: #fff;
}

.swing-253-body .swing-253-toc__title {
    margin: 0 0 12px;
    font-size: 18px;
    font-weight: 700;
}

.swing-253-body .swing-253-toc ol {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 24px;
    margin: 0;
    padding-left: 1.5em;
}

.swing-253-body .swing-253-toc a,
.swing-253-body .swing-253-toc a:visited {
    color: #fff;
}

.swing-253-body .swing-253-toc a:hover,
.swing-253-body .swing-253-toc a:focus-visible {
    color: #d8f1ff;
}

.swing-253-body .swing-253-section {
    margin: 0 0 54px;
}

.swing-253-body .swing-253-section--soft {
    margin-right: -22px;
    margin-left: -22px;
    padding: 42px 22px;
    border-radius: 22px;
    background: var(--s253-soft);
}

.swing-253-body .swing-253-anchor {
    scroll-margin-top: 110px;
}

.swing-253-body .swing-253-heading {
    display: flex;
    align-items: flex-start;
    gap: 17px;
    margin: 0 0 22px;
}

.swing-253-body .swing-253-heading > span {
    flex: 0 0 auto;
    min-width: 48px;
    padding-top: 6px;
    border-top: 3px solid var(--s253-red);
    color: var(--s253-red);
    font-family: "M PLUS 1 Code", monospace;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.swing-253-body .swing-253-heading h2 {
    margin: 0;
    color: var(--s253-navy);
    font-size: clamp(25px, 3vw, 34px);
    line-height: 1.45;
}

.swing-253-body .swing-253-steps {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 26px;
}

.swing-253-body .swing-253-steps article {
    padding: 24px;
    border: 1px solid var(--s253-line);
    border-radius: 14px;
    background: #fff;
}

.swing-253-body .swing-253-steps article > span {
    display: inline-block;
    margin-bottom: 7px;
    color: var(--s253-red);
    font-family: "M PLUS 1 Code", monospace;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.swing-253-body .swing-253-steps h3,
.swing-253-body .swing-253-compare-grid h3,
.swing-253-body .swing-253-use-grid h3,
.swing-253-body .swing-253-design-layout h3,
.swing-253-body .swing-253-note h3,
.swing-253-body .swing-253-cta h3 {
    margin: 0 0 10px;
    color: var(--s253-navy);
    font-size: 20px;
    line-height: 1.55;
}

.swing-253-body .swing-253-steps p,
.swing-253-body .swing-253-compare-grid p,
.swing-253-body .swing-253-use-grid p {
    margin: 0;
}

.swing-253-body .swing-253-page-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 24px;
}

.swing-253-body .swing-253-page-grid a {
    position: relative;
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 3px 13px;
    min-width: 0;
    padding: 20px 20px 20px 18px;
    border: 1px solid #d6dfe2;
    border-radius: 13px;
    background: #fff;
    color: var(--s253-text);
    text-decoration: none;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.swing-253-body .swing-253-page-grid a::after {
    position: absolute;
    top: 50%;
    right: 16px;
    width: 8px;
    height: 8px;
    border-top: 2px solid var(--s253-blue);
    border-right: 2px solid var(--s253-blue);
    content: "";
    transform: translateY(-50%) rotate(45deg);
}

.swing-253-body .swing-253-page-grid a:hover,
.swing-253-body .swing-253-page-grid a:focus-visible {
    border-color: #9bbdca;
    color: var(--s253-text);
    box-shadow: 0 10px 24px rgba(30, 57, 68, 0.10);
    transform: translateY(-2px);
}

.swing-253-body .swing-253-page-grid__number {
    grid-row: 1 / span 2;
    color: var(--s253-red);
    font-family: "M PLUS 1 Code", monospace;
    font-size: 17px;
    font-weight: 700;
}

.swing-253-body .swing-253-page-grid strong {
    padding-right: 20px;
    color: var(--s253-navy);
    font-size: 17px;
    line-height: 1.55;
}

.swing-253-body .swing-253-page-grid small {
    padding-right: 20px;
    color: var(--s253-muted);
    font-size: 13px;
    line-height: 1.65;
}

.swing-253-body .swing-253-compare-grid,
.swing-253-body .swing-253-use-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 24px;
}

.swing-253-body .swing-253-compare-grid article,
.swing-253-body .swing-253-use-grid article {
    min-width: 0;
    padding: 25px;
    border: 1px solid var(--s253-line);
    border-radius: 15px;
    background: #fff;
}

.swing-253-body .swing-253-compare-grid a {
    display: block;
    margin-top: 10px;
    font-weight: 700;
}

.swing-253-body .swing-253-note {
    margin-top: 24px;
    padding: 24px 28px;
    border: 1px solid #e7d9be;
    border-left: 6px solid #b98837;
    border-radius: 0 14px 14px 0;
    background: #fffaf0;
}

.swing-253-body .swing-253-note p {
    margin: 0;
}

.swing-253-body .swing-253-design-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 24px;
    margin-top: 24px;
}

.swing-253-body .swing-253-check-list {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: s253-check;
}

.swing-253-body .swing-253-check-list li {
    position: relative;
    padding: 15px 16px 15px 53px;
    border-radius: 10px;
    background: #fff;
    counter-increment: s253-check;
}

.swing-253-body .swing-253-check-list li::before {
    position: absolute;
    top: 14px;
    left: 16px;
    display: grid;
    width: 25px;
    height: 25px;
    place-items: center;
    border-radius: 50%;
    background: var(--s253-red);
    color: #fff;
    content: counter(s253-check);
    font-family: "M PLUS 1 Code", monospace;
    font-size: 12px;
    font-weight: 700;
}

.swing-253-body .swing-253-design-links {
    display: grid;
    gap: 12px;
}

.swing-253-body .swing-253-design-links a {
    display: block;
    padding: 17px 18px;
    border: 1px solid #cfdbdf;
    border-radius: 11px;
    background: #fff;
    text-decoration: none;
}

.swing-253-body .swing-253-design-links a:hover,
.swing-253-body .swing-253-design-links a:focus-visible {
    border-color: #8eb7c8;
    background: #f9fdff;
}

.swing-253-body .swing-253-design-links strong,
.swing-253-body .swing-253-design-links span {
    display: block;
}

.swing-253-body .swing-253-design-links strong {
    color: var(--s253-navy);
}

.swing-253-body .swing-253-design-links span {
    margin-top: 3px;
    color: var(--s253-muted);
    font-size: 13px;
}

.swing-253-body .swing-253-inline-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.swing-253-body .swing-253-inline-links a {
    display: inline-flex;
    align-items: center;
    min-height: 46px;
    padding: 10px 18px;
    border: 1px solid var(--s253-blue);
    border-radius: 999px;
    color: var(--s253-blue);
    font-weight: 700;
    text-decoration: none;
}

.swing-253-body .swing-253-inline-links a:hover,
.swing-253-body .swing-253-inline-links a:focus-visible {
    background: var(--s253-blue);
    color: #fff;
}

.swing-253-body .swing-253-product-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 15px;
    margin-top: 24px;
}

.swing-253-body .swing-253-product-grid a {
    display: block;
    padding: 22px;
    border: 1px solid #d4dee1;
    border-radius: 13px;
    background: #fff;
    text-decoration: none;
}

.swing-253-body .swing-253-product-grid a:hover,
.swing-253-body .swing-253-product-grid a:focus-visible {
    border-color: #9abac6;
    box-shadow: 0 8px 20px rgba(36, 60, 68, 0.09);
}

.swing-253-body .swing-253-product-grid strong,
.swing-253-body .swing-253-product-grid span {
    display: block;
}

.swing-253-body .swing-253-product-grid strong {
    color: var(--s253-navy);
    font-size: 18px;
}

.swing-253-body .swing-253-product-grid span {
    margin-top: 5px;
    color: var(--s253-muted);
    font-size: 14px;
}

.swing-253-body .swing-253-cta {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(230px, 0.65fr);
    gap: 28px;
    align-items: center;
    margin-top: 28px;
    padding: 30px;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 10px 28px rgba(31, 52, 60, 0.08);
}

.swing-253-body .swing-253-cta p {
    margin: 0;
}

.swing-253-body .swing-253-cta__buttons,
.swing-253-body .swing-253-final-cta__buttons {
    display: grid;
    gap: 11px;
}

.swing-253-body .swing-253-button,
.swing-253-body .swing-253-button:visited {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 12px 18px;
    border: 2px solid transparent;
    border-radius: 8px;
    font-weight: 700;
    line-height: 1.45;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.swing-253-body .swing-253-button--primary,
.swing-253-body .swing-253-button--primary:visited {
    border-color: var(--s253-red);
    background-color: var(--s253-red);
    color: #fff;
}

.swing-253-body .swing-253-button--primary:hover,
.swing-253-body .swing-253-button--primary:focus-visible {
    border-color: var(--s253-red-dark);
    background-color: var(--s253-red-dark);
    color: #fff;
}

.swing-253-body .swing-253-button--secondary,
.swing-253-body .swing-253-button--secondary:visited {
    border-color: var(--s253-blue);
    background-color: #fff;
    color: var(--s253-blue);
}

.swing-253-body .swing-253-button--secondary:hover,
.swing-253-body .swing-253-button--secondary:focus-visible {
    border-color: var(--s253-blue);
    background-color: var(--s253-blue);
    color: #fff;
}

.swing-253-body .swing-253-faq {
    display: grid;
    gap: 12px;
}

.swing-253-body .swing-253-faq details {
    overflow: hidden;
    border: 1px solid #d8e0e2;
    border-radius: 12px;
    background: #fff;
}

.swing-253-body .swing-253-faq summary {
    position: relative;
    padding: 18px 54px 18px 22px;
    color: var(--s253-navy);
    font-weight: 700;
    cursor: pointer;
    list-style: none;
}

.swing-253-body .swing-253-faq summary::-webkit-details-marker {
    display: none;
}

.swing-253-body .swing-253-faq summary::before,
.swing-253-body .swing-253-faq summary::after {
    position: absolute;
    top: 50%;
    right: 22px;
    width: 16px;
    height: 2px;
    background: var(--s253-red);
    content: "";
}

.swing-253-body .swing-253-faq summary::after {
    transform: rotate(90deg);
    transition: transform 0.2s ease;
}

.swing-253-body .swing-253-faq details[open] summary::after {
    transform: rotate(0deg);
}

.swing-253-body .swing-253-faq details > div {
    padding: 0 22px 20px;
    border-top: 1px solid #edf1f2;
}

.swing-253-body .swing-253-faq p {
    margin: 16px 0 0;
}

.swing-253-body .swing-253-related {
    margin: 8px 0 48px;
    padding: 31px;
    border-radius: 18px;
    background: var(--s253-navy);
}

.swing-253-body .swing-253-related h2 {
    margin: 0 0 19px;
    color: #fff;
    font-size: 25px;
}

.swing-253-body .swing-253-related__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 11px;
}

.swing-253-body .swing-253-related__grid a,
.swing-253-body .swing-253-related__grid a:visited {
    display: block;
    padding: 16px;
    border: 1px solid rgba(255,255,255,0.28);
    border-radius: 10px;
    background: rgba(255,255,255,0.08);
    color: #fff;
    text-decoration: none;
}

.swing-253-body .swing-253-related__grid a:hover,
.swing-253-body .swing-253-related__grid a:focus-visible {
    background: rgba(255,255,255,0.16);
    color: #fff;
}

.swing-253-body .swing-253-related__grid strong,
.swing-253-body .swing-253-related__grid span {
    display: block;
}

.swing-253-body .swing-253-related__grid span {
    margin-top: 4px;
    color: #d9e5ea;
    font-size: 13px;
}

.swing-253-body .swing-253-final-cta {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(250px, 0.65fr);
    gap: 30px;
    align-items: center;
    margin-bottom: 22px;
    padding: 38px;
    border-radius: 20px;
    background: linear-gradient(135deg, #b54718 0%, #df6b2f 100%);
    color: #fff;
}

.swing-253-body .swing-253-final-cta__label {
    color: #ffd8df;
}

.swing-253-body .swing-253-final-cta h2 {
    margin: 0 0 13px;
    color: #fff;
    font-size: clamp(24px, 3vw, 32px);
    line-height: 1.5;
}

.swing-253-body .swing-253-final-cta p {
    margin: 0;
}

.swing-253-body .swing-253-button--light,
.swing-253-body .swing-253-button--light:visited {
    border-color: #fff;
    background-color: #fff;
    color: var(--s253-red-dark);
}

.swing-253-body .swing-253-button--light:hover,
.swing-253-body .swing-253-button--light:focus-visible {
    border-color: #f4d8de;
    background-color: #f4d8de;
    color: var(--s253-red-dark);
}

.swing-253-body .swing-253-button--accent,
.swing-253-body .swing-253-button--accent:visited {
    border-color: #fff;
    background-color: transparent;
    color: #fff;
}

.swing-253-body .swing-253-button--accent:hover,
.swing-253-body .swing-253-button--accent:focus-visible {
    border-color: #fff;
    background-color: #fff;
    color: var(--s253-red-dark);
}

@media (max-width: 1100px) {
    .swing-253-body .swing-253-section--soft {
        margin-right: -12px;
        margin-left: -12px;
        padding-right: 12px;
        padding-left: 12px;
    }

    .swing-253-body .swing-253-related__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 800px) {
    .swing-253-body .swing-253-toc ol,
    .swing-253-body .swing-253-steps,
    .swing-253-body .swing-253-page-grid,
    .swing-253-body .swing-253-compare-grid,
    .swing-253-body .swing-253-use-grid,
    .swing-253-body .swing-253-product-grid,
    .swing-253-body .swing-253-design-layout,
    .swing-253-body .swing-253-cta,
    .swing-253-body .swing-253-final-cta {
        grid-template-columns: 1fr;
    }

    .swing-253-body .swing-253-cta,
    .swing-253-body .swing-253-final-cta {
        gap: 22px;
    }
}

@media (max-width: 650px) {
    .swing-253-body .swing-253-hero {
        margin-bottom: 24px;
        border-radius: 12px;
    }

    .swing-253-body .swing-253-lead,
    .swing-253-body .swing-253-summary,
    .swing-253-body .swing-253-toc,
    .swing-253-body .swing-253-related,
    .swing-253-body .swing-253-final-cta {
        padding: 23px 19px;
    }

    .swing-253-body .swing-253-lead {
        border-left-width: 5px;
    }

    .swing-253-body .swing-253-toc ol {
        gap: 8px;
    }

    .swing-253-body .swing-253-heading {
        display: block;
    }

    .swing-253-body .swing-253-heading > span {
        display: inline-block;
        margin-bottom: 7px;
    }

    .swing-253-body .swing-253-steps article,
    .swing-253-body .swing-253-compare-grid article,
    .swing-253-body .swing-253-use-grid article,
    .swing-253-body .swing-253-product-grid a {
        padding: 20px;
    }

    .swing-253-body .swing-253-page-grid a {
        grid-template-columns: 34px minmax(0, 1fr);
        padding: 18px 17px 18px 15px;
    }

    .swing-253-body .swing-253-related__grid {
        grid-template-columns: 1fr;
    }

    .swing-253-body .swing-253-inline-links {
        display: grid;
    }

    .swing-253-body .swing-253-inline-links a {
        justify-content: center;
        border-radius: 8px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .swing-253-body .swing-253-lead h2,
    .swing-253-body .swing-253-heading h2,
    .swing-253-body .swing-253-final-cta h2 {
        font-size: 23px;
    }

    .swing-253-body .swing-253-section--soft {
        margin-right: 0;
        margin-left: 0;
        padding: 30px 14px;
        border-radius: 14px;
    }

    .swing-253-body .swing-253-summary li {
        padding-left: 27px;
    }

    .swing-253-body .swing-253-cta {
        padding: 22px 18px;
    }

    .swing-253-body .swing-253-button {
        width: 100%;
    }
}