:root {
    color-scheme: light;
    --color-cream: #F6F1E7;
    --color-cream-deep: #EEE5D5;
    --color-paper: #FBF8F2;
    --color-ink: #302B25;
    --color-ink-soft: #6B6157;
    --color-accent: #A64A32;
    --color-accent-deep: #8A3B27;
    --color-accent-wash: #F1E1D7;
    --color-line: #D9CEBD;
    --color-brown: #3B2F27;
    --color-brown-soft: #CBBDAB;
    --color-brown-line: #5C4C40;
    --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;
    --font-sans: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
}

html {
    background: var(--color-cream);
}

body {
    background: var(--color-cream);
    color: var(--color-ink);
    font-family: var(--font-sans);
    font-weight: 400;
}

:focus-visible {
    outline: 2px solid var(--color-focus, var(--color-accent));
    outline-offset: 3px;
}

/* 見出し：明朝の大見出し＋横罫線 */
.ttl_ptn_1 {
    display: flex;
    align-items: center;
    gap: 32px;
    color: var(--color-ink);
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: 600;
    line-height: 1.4em;
    letter-spacing: 0.04em;
    @media (max-width: 1000px) {
        font-size: 44px;
    }
    @media (max-width: 800px) {
        font-size: 40px;
    }
    @media (max-width: 700px) {
        font-size: 36px;
    }
    @media (max-width: 600px) {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
        font-size: 32px;
    }
    @media (max-width: 500px) {
        font-size: 28px;
    }
    &::after {
        min-width: 40px;
        height: 1px;
        flex: 1 1 40px;
        background: var(--color-line);
        content: "";
        @media (max-width: 600px) {
            min-width: 0;
            flex: none;
        }
    }
}

/* ボタン：色は使う側が変数で渡す */
.btn_ptn_1 {
    padding: 0 28px;
    min-height: 56px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: var(--color-btn-bg, var(--color-accent));
    color: var(--color-btn-ink, var(--color-cream));
    font-size: 16px;
    font-weight: 500;
    line-height: 1.5em;
    letter-spacing: 0.06em;
    border: 1px solid var(--color-btn-line, var(--color-accent));
    transition: background-color 0.3s;
    .arrow_ptn_1 {
        transition: transform 0.3s;
    }
    @media (hover: hover) {
        &:hover {
            background: var(--color-btn-bg-hover, var(--color-accent-deep));
            .arrow_ptn_1 {
                transform: translateX(4px);
            }
        }
    }
}

/* 細い矢印 */
.arrow_ptn_1 {
    width: 24px;
    height: 10px;
    flex: 0 0 auto;
    fill: none;
    stroke: currentColor;
    stroke-width: 1;
}

/* 開いて読む：すべての結果・出典 */
.more_ptn_1 {
    border-bottom: 1px solid var(--color-line);
    summary {
        padding: 20px 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        color: var(--color-accent-deep);
        font-size: 16px;
        font-weight: 500;
        line-height: 1.6em;
        letter-spacing: 0.06em;
        list-style: none;
        cursor: pointer;
        transition: color 0.3s;
        &::-webkit-details-marker {
            display: none;
        }
        &::after {
            content: "＋";
        }
        .close {
            display: none;
        }
        @media (hover: hover) {
            &:hover {
                color: var(--color-accent);
            }
        }
    }
    &[open] summary {
        &::after {
            content: "－";
        }
        .open {
            display: none;
        }
        .close {
            display: inline;
        }
    }
}

/* 最終更新: 2026-10-25 19:15 */