/* =========================================================
   rules.css
   参加ルール
   ========================================================= */

.rules-toc {
    max-width: 640px;
    margin: 0 0 32px;
    padding: 18px 24px;
}

.rules-toc-title {
    margin: 0 0 12px;
    color: var(--color-text);
    font-size: 1rem;
}

.rules-toc-list {
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: rules-toc;
}

.rules-toc-list li {
    counter-increment: rules-toc;
    border-bottom: 1px solid var(--color-border);
}

.rules-toc-list li:last-child {
    border-bottom: 0;
}

.rules-toc-list a {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 7px 0;
    color: var(--color-link);
    font-size: 14px;
    line-height: 1.5;
    text-decoration: none;
    overflow-wrap: anywhere;
}

.rules-toc-list a::before {
    content: counter(rules-toc, decimal-leading-zero);
    flex: 0 0 2em;
    color: var(--color-main);
    font-weight: 700;
}

.rules-toc-list a:hover,
.rules-toc-list a:focus-visible {
    text-decoration: underline;
}

.rules-card {
    padding: 32px;
}

.rules-section {
    margin-bottom: 36px;
    scroll-margin-top: 16px;
}

.rules-section:last-of-type {
    margin-bottom: 0;
}

.rules-section h2 {
    margin: 0 0 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
    font-size: 1.2rem;
    line-height: 1.5;
}

.rules-section p {
    margin: 0 0 12px;
    line-height: 1.8;
}

.rules-section p:last-child {
    margin-bottom: 0;
}

.rules-list,
.rules-numbered-list {
    margin: 0;
    padding-left: 1.6em;
}

.rules-list {
    list-style: disc;
}

.rules-numbered-list {
    padding-left: 0;
    list-style: none;
}

.rules-list li,
.rules-numbered-list li {
    margin-bottom: 10px;
    line-height: 1.8;
}

.rules-list li:last-child,
.rules-numbered-list li:last-child {
    margin-bottom: 0;
}

.rules-beginner {
    margin-right: -12px;
    margin-left: -12px;
    padding: 22px 24px;
    background: #eef8f1;
    border-left: 5px solid var(--color-primary);
    border-radius: 4px;
}

.rules-beginner h2 {
    border-bottom-color: #badbc5;
}

.rules-schedule {
    display: grid;
    justify-items: center;
    gap: 8px;
    margin-top: 8px;
}

.rules-schedule-step {
    width: min(100%, 420px);
    padding: 14px 18px;
    background: #f7faf8;
    border: 1px solid var(--color-border);
    border-radius: 5px;
    text-align: center;
}

.rules-schedule-step strong,
.rules-schedule-step span {
    display: block;
}

.rules-schedule-step strong {
    margin-bottom: 4px;
}

.rules-schedule-arrow {
    color: var(--color-text-light);
    font-size: 1.15rem;
    line-height: 1;
}

.rules-example,
.rules-difference-title {
    font-weight: 700;
}

.rules-back-to-top {
    margin: 36px 0 0;
    text-align: right;
}

.rules-back-to-top a {
    text-decoration: underline;
}

@media (max-width: 575.98px) {
    .rules-toc {
        margin-bottom: 24px;
        padding: 18px 16px;
    }

    .rules-card {
        padding: 24px 16px;
    }

    .rules-section {
        margin-bottom: 30px;
    }

    .rules-beginner {
        margin-right: -4px;
        margin-left: -4px;
        padding: 20px 16px;
    }
}