:root {
    --rules-ink: #33251f;
    --rules-brown: #5b3d2e;
    --rules-rust: #9a5d3d;
    --rules-paper: #fffdf8;
    --rules-bg: #f3eee6;
    --rules-line: #d9cdbd;
    --rules-muted: #756b62;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--rules-ink);
    background: var(--rules-bg);
    font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
    line-height: 1.8;
}

a {
    color: var(--rules-rust);
}

.rules-main {
    width: min(900px, calc(100% - 32px));
    margin: 48px auto 72px;
}

.rules-heading {
    margin-bottom: 28px;
    text-align: center;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--rules-rust);
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .14em;
}

.rules-heading h1 {
    margin: 0;
    color: var(--rules-brown);
    font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
    font-size: clamp(2rem, 6vw, 3.4rem);
    line-height: 1.35;
}

.rules-heading p:last-child {
    margin: 12px 0 0;
    color: var(--rules-muted);
}

.rules-panel {
    padding: clamp(20px, 4vw, 42px);
    border: 1px solid var(--rules-line);
    background: var(--rules-paper);
    box-shadow: 0 10px 25px rgba(70, 47, 32, .08);
}

.rules-list {
    display: grid;
    gap: 24px;
    margin: 0;
    padding-left: 2.1rem;
}

.rules-list li {
    padding-left: .45rem;
}

.rules-list h2 {
    margin: 0 0 6px;
    color: var(--rules-brown);
    font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
    font-size: 1.25rem;
    line-height: 1.45;
}

.rules-list p {
    margin: 0;
}

.rules-footer {
    padding-top: 28px;
    color: var(--rules-muted);
    text-align: center;
}

.rules-footer p {
    margin: 2px 0;
}

.rules-apply-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    margin-top: 20px;
    padding: 8px 18px;
    border-radius: 999px;
    color: #fff;
    background: var(--rules-brown);
    font-weight: 800;
    text-decoration: none;
}

@media (max-width: 600px) {
    .rules-main {
        width: min(100% - 24px, 900px);
        margin: 30px auto 48px;
    }

    .rules-panel {
        padding: 20px 16px 24px;
    }

    .rules-list {
        gap: 20px;
        padding-left: 1.65rem;
    }

    .rules-list li {
        padding-left: .2rem;
    }

    .rules-list h2 {
        font-size: 1.12rem;
    }
}