@charset "UTF-8";

.swing-315-body {
    color: #263238;
    background: #fff;
    font-family: "Noto Sans JP", sans-serif;
}

.swing-315-page {
    --swing-315-navy: #17324d;
    --swing-315-blue: #1769aa;
    --swing-315-light-blue: #eef7fc;
    --swing-315-green: #287a67;
    --swing-315-light-green: #eef8f5;
    --swing-315-red: #b83a3a;
    --swing-315-cream: #fff9ec;
    --swing-315-border: #d9e1e6;
    --swing-315-text: #263238;
    --swing-315-muted: #5c6b73;
    width: 100%;
    max-width: 980px;
    margin: 0 auto;
    padding: 0 0 64px;
    color: var(--swing-315-text);
    line-height: 1.9;
}

.swing-315-page *,
.swing-315-page *::before,
.swing-315-page *::after {
    box-sizing: border-box;
}

.swing-315-page a {
    color: var(--swing-315-blue);
    text-decoration-thickness: 1px;
    text-underline-offset: 0.18em;
}

.swing-315-page a:hover,
.swing-315-page a:focus-visible {
    color: #0d4b7a;
    text-decoration-thickness: 2px;
}

.swing-315-page a:focus-visible,
.swing-315-page summary:focus-visible {
    outline: 3px solid rgba(23, 105, 170, 0.35);
    outline-offset: 3px;
}

.swing-315-header {
    margin: 0 0 28px;
}

.swing-315-kicker,
.swing-315-cta-kicker {
    margin: 0 0 8px;
    color: var(--swing-315-green);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.swing-315-page .pageTitle {
    margin: 0 0 20px;
    color: var(--swing-315-navy);
    font-size: clamp(1.8rem, 3.2vw, 2.65rem);
    line-height: 1.35;
    letter-spacing: 0.02em;
}

.swing-315-lead {
    margin: 0;
    padding: 22px 24px;
    border-left: 5px solid var(--swing-315-green);
    background: var(--swing-315-light-green);
    font-size: 1.04rem;
}

.swing-315-hero {
    margin: 0 0 36px;
    overflow: hidden;
    border-radius: 14px;
    box-shadow: 0 12px 30px rgba(23, 50, 77, 0.12);
}

.swing-315-hero img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    object-fit: cover;
}

.swing-315-summary,
.swing-315-toc,
.swing-315-section,
.swing-315-related,
.swing-315-final-cta {
    scroll-margin-top: 24px;
}

.swing-315-summary {
    margin: 0 0 26px;
    padding: 26px 28px;
    border: 1px solid #cfe1eb;
    border-radius: 12px;
    background: var(--swing-315-light-blue);
}

.swing-315-summary h2 {
    margin: 0 0 12px;
    color: var(--swing-315-navy);
    font-size: 1.35rem;
}

.swing-315-summary ul,
.swing-315-check-list {
    margin: 0;
    padding-left: 1.4em;
}

.swing-315-summary li + li,
.swing-315-check-list li + li {
    margin-top: 6px;
}

.swing-315-toc {
    margin: 0 0 44px;
    padding: 24px 28px;
    border: 1px solid var(--swing-315-border);
    border-radius: 12px;
    background: #fff;
}

.swing-315-toc-title {
    margin: 0 0 12px;
    color: var(--swing-315-navy);
    font-weight: 700;
}

.swing-315-toc ol {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 28px;
    margin: 0;
    padding-left: 1.4em;
}

.swing-315-section {
    margin: 0 0 54px;
}

.swing-315-section > h2,
.swing-315-related > h2,
.swing-315-final-cta h2 {
    margin: 0 0 22px;
    color: var(--swing-315-navy);
    font-size: clamp(1.45rem, 2.6vw, 2rem);
    line-height: 1.45;
}

.swing-315-section > h2 {
    padding: 0 0 12px;
    border-bottom: 3px solid var(--swing-315-green);
}

.swing-315-section p {
    margin: 0 0 18px;
}

.swing-315-example-grid,
.swing-315-action-grid,
.swing-315-related-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin: 26px 0;
}

.swing-315-example-card {
    padding: 22px;
    border: 1px solid var(--swing-315-border);
    border-radius: 12px;
    background: #fff;
}

.swing-315-example-card h3 {
    margin: 0 0 10px;
    color: var(--swing-315-green);
    font-size: 1.08rem;
}

.swing-315-example-card p {
    margin: 0;
    font-size: 0.95rem;
}

.swing-315-table-wrap {
    width: 100%;
    margin: 24px 0;
    overflow-x: auto;
    border: 1px solid var(--swing-315-border);
    border-radius: 12px;
    -webkit-overflow-scrolling: touch;
}

.swing-315-table {
    width: 100%;
    min-width: 680px;
    border-collapse: collapse;
    background: #fff;
}

.swing-315-table th,
.swing-315-table td {
    padding: 15px 16px;
    border-right: 1px solid var(--swing-315-border);
    border-bottom: 1px solid var(--swing-315-border);
    text-align: left;
    vertical-align: top;
}

.swing-315-table thead th {
    color: #fff;
    background: var(--swing-315-navy);
    font-weight: 700;
}

.swing-315-table tbody th {
    width: 86px;
    color: var(--swing-315-navy);
    background: #f6f8fa;
}

.swing-315-table tr:last-child th,
.swing-315-table tr:last-child td {
    border-bottom: 0;
}

.swing-315-table th:last-child,
.swing-315-table td:last-child {
    border-right: 0;
}

.swing-315-check-list {
    margin: 24px 0;
    padding: 24px 28px 24px 3.1em;
    border-radius: 12px;
    background: var(--swing-315-cream);
}

.swing-315-steps {
    display: grid;
    gap: 14px;
    margin: 24px 0;
}

.swing-315-step {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    padding: 20px 22px;
    border: 1px solid var(--swing-315-border);
    border-radius: 12px;
    background: #fff;
}

.swing-315-step-number {
    display: inline-flex;
    flex: 0 0 40px;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #fff;
    background: var(--swing-315-green);
    font-weight: 800;
}

.swing-315-step h3 {
    margin: 2px 0 6px;
    color: var(--swing-315-navy);
    font-size: 1.08rem;
}

.swing-315-step p {
    margin: 0;
}

.swing-315-note {
    margin: 28px 0 0;
    padding: 24px 26px;
    border-left: 5px solid var(--swing-315-blue);
    border-radius: 8px;
    background: var(--swing-315-light-blue);
}

.swing-315-note h3 {
    margin: 0 0 10px;
    color: var(--swing-315-navy);
}

.swing-315-note p {
    margin: 0;
}

.swing-315-formula {
    margin: 24px 0;
    padding: 24px;
    border: 2px solid #d7e7df;
    border-radius: 12px;
    background: var(--swing-315-light-green);
    text-align: center;
}

.swing-315-formula p {
    margin: 0;
}

.swing-315-formula p + p {
    margin-top: 6px;
    color: var(--swing-315-navy);
    font-size: 1.15rem;
    font-weight: 700;
}

.swing-315-action-card,
.swing-315-related-grid a {
    display: flex;
    min-width: 0;
    flex-direction: column;
    border: 1px solid var(--swing-315-border);
    border-radius: 12px;
    background: #fff;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.swing-315-action-card {
    padding: 22px;
}

.swing-315-action-card:hover,
.swing-315-action-card:focus-visible,
.swing-315-related-grid a:hover,
.swing-315-related-grid a:focus-visible {
    color: #0d4b7a;
    border-color: #7eb2d4;
    box-shadow: 0 9px 22px rgba(23, 50, 77, 0.1);
    transform: translateY(-2px);
}

.swing-315-action-label {
    margin-bottom: 8px;
    color: var(--swing-315-green);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.swing-315-action-card strong {
    margin-bottom: 8px;
    color: var(--swing-315-navy);
    line-height: 1.55;
}

.swing-315-action-card > span:last-child,
.swing-315-related-grid span {
    color: var(--swing-315-muted);
    font-size: 0.9rem;
    line-height: 1.75;
}

.swing-315-faq details {
    overflow: hidden;
    margin: 0 0 12px;
    border: 1px solid var(--swing-315-border);
    border-radius: 10px;
    background: #fff;
}

.swing-315-faq summary {
    position: relative;
    padding: 18px 52px 18px 22px;
    color: var(--swing-315-navy);
    font-weight: 700;
    cursor: pointer;
    list-style: none;
}

.swing-315-faq summary::-webkit-details-marker {
    display: none;
}

.swing-315-faq summary::after {
    content: "+";
    position: absolute;
    top: 50%;
    right: 20px;
    width: 24px;
    height: 24px;
    transform: translateY(-50%);
    color: var(--swing-315-blue);
    font-size: 1.45rem;
    line-height: 1;
    text-align: center;
}

.swing-315-faq details[open] summary::after {
    content: "−";
}

.swing-315-faq details > div {
    padding: 0 22px 18px;
}

.swing-315-faq details p {
    margin: 0;
}

.swing-315-related {
    margin: 0 0 46px;
    padding-top: 4px;
}

.swing-315-related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.swing-315-related-grid a {
    padding: 20px 22px;
}

.swing-315-related-grid strong {
    margin-bottom: 6px;
    color: var(--swing-315-navy);
    line-height: 1.55;
}

.swing-315-back-link {
    margin: 20px 0 0;
    text-align: right;
}

.swing-315-final-cta {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(250px, 0.6fr);
    gap: 28px;
    align-items: center;
    padding: 34px;
    border-radius: 16px;
    color: #fff;
    background: var(--swing-315-navy);
}

.swing-315-final-cta h2 {
    margin-bottom: 10px;
    color: #fff;
}

.swing-315-final-cta p {
    margin: 0;
}

.swing-315-final-cta .swing-315-cta-kicker {
    color: #bfe9dc;
}

.swing-315-cta-buttons {
    display: grid;
    gap: 12px;
}

.swing-315-button {
    display: inline-flex;
    min-height: 52px;
    align-items: center;
    justify-content: center;
    padding: 12px 18px;
    border: 2px solid transparent;
    border-radius: 8px;
    font-weight: 700;
    line-height: 1.45;
    text-align: center;
    text-decoration: none !important;
}

.swing-315-button-primary,
.swing-315-button-primary:visited {
    color: var(--swing-315-navy);
    background: #fff;
}

.swing-315-button-primary:hover,
.swing-315-button-primary:focus-visible {
    color: var(--swing-315-navy);
    background: #eaf5fb;
}

.swing-315-button-secondary,
.swing-315-button-secondary:visited {
    color: #fff;
    border-color: #fff;
    background: transparent;
}

.swing-315-button-secondary:hover,
.swing-315-button-secondary:focus-visible {
    color: var(--swing-315-navy);
    background: #fff;
}

@media (max-width: 1100px) {
    .swing-315-page {
        padding-right: 20px;
        padding-left: 20px;
    }

    .swing-315-example-grid,
    .swing-315-action-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 650px) {
    .swing-315-page {
        padding-right: 14px;
        padding-left: 14px;
        line-height: 1.85;
    }

    .swing-315-lead,
    .swing-315-summary,
    .swing-315-toc,
    .swing-315-note,
    .swing-315-final-cta {
        padding: 20px;
    }

    .swing-315-toc ol,
    .swing-315-related-grid,
    .swing-315-final-cta {
        grid-template-columns: 1fr;
    }

    .swing-315-section {
        margin-bottom: 42px;
    }

    .swing-315-check-list {
        padding: 20px 20px 20px 2.7em;
    }

    .swing-315-step {
        padding: 18px;
    }

    .swing-315-step-number {
        flex-basis: 34px;
        width: 34px;
        height: 34px;
    }

    .swing-315-final-cta {
        gap: 22px;
    }
}

@media (max-width: 480px) {
    .swing-315-page {
        padding-right: 10px;
        padding-left: 10px;
    }

    .swing-315-page .pageTitle {
        font-size: 1.65rem;
    }

    .swing-315-section > h2,
    .swing-315-related > h2,
    .swing-315-final-cta h2 {
        font-size: 1.35rem;
    }

    .swing-315-lead,
    .swing-315-summary,
    .swing-315-toc,
    .swing-315-note,
    .swing-315-final-cta,
    .swing-315-example-card,
    .swing-315-action-card,
    .swing-315-related-grid a {
        padding: 18px;
    }

    .swing-315-step {
        gap: 12px;
    }
}