:root {
    --accent: #e52b16;
    --accent-dark: #b91809;
    --ink: #202124;
    --muted: #6b7280;
    --line: #dedede;
    --paper: #fff;
    --canvas: #f2f2f2;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    color: var(--ink);
    background:
        linear-gradient(#ececec 1px, transparent 1px),
        var(--canvas);
    background-size: 100% 36px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP",
        "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
    line-height: 1.7;
}

a { color: #0757a3; text-decoration: none; }
a:hover { color: var(--accent); text-decoration: underline; }

.site-header {
    color: #fff;
    background: linear-gradient(110deg, #151515 0 60%, #292929 60%);
    border-top: 5px solid var(--accent);
    border-bottom: 4px solid var(--accent);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .22);
}

.site-header-inner {
    max-width: 1080px;
    min-height: 92px;
    margin: auto;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.site-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
    font-size: clamp(20px, 3vw, 31px);
    font-weight: 900;
    line-height: 1.2;
    letter-spacing: -.04em;
}

.site-brand:hover { color: #fff; text-decoration: none; }
.site-brand img {
    width: 58px;
    height: 58px;
    border: 3px solid #fff;
    border-radius: 13px;
}

.site-tagline {
    flex: none;
    padding: 6px 10px;
    border: 1px solid #666;
    color: #ddd;
    font-size: 12px;
}

.container {
    max-width: 1080px;
    margin: 24px auto 48px;
    padding: 0 16px;
}

.filter-title {
    margin: 0 0 14px;
    padding: 9px 14px;
    background: #fff;
    border: 1px solid var(--line);
    border-left: 6px solid var(--accent);
    font-size: 18px;
}

.home-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, 1fr);
    gap: 18px;
    align-items: start;
}

.home-column { min-width: 0; }

.box {
    margin: 0 0 18px;
    padding: 0;
    overflow: hidden;
    background: var(--paper);
    border: 1px solid #d6d6d6;
    border-radius: 3px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, .06);
}

.box h2 {
    margin: 0;
    padding: 10px 14px;
    color: #fff;
    background: linear-gradient(90deg, var(--accent-dark), var(--accent));
    border: 0;
    font-size: 18px;
    line-height: 1.4;
}

.box h2::before { content: "●"; margin-right: 8px; color: #ffd84d; font-size: 11px; }
.box ul, .box ol { margin: 0; padding: 0; list-style: none; }

.box li {
    position: relative;
    margin: 0;
    padding: 11px 14px 11px 32px;
    border-bottom: 1px dotted #cfcfcf;
    line-height: 1.45;
}

.box li:last-child { border-bottom: 0; }
.box li::before {
    content: "›";
    position: absolute;
    left: 15px;
    color: var(--accent);
    font-weight: 900;
}

.box li a { color: #222; font-weight: 700; }
.box li a:hover { color: var(--accent); }

.ranking { counter-reset: rank; }
.ranking li { counter-increment: rank; padding-left: 50px; }
.ranking li::before {
    content: counter(rank);
    top: 10px;
    left: 13px;
    width: 25px;
    height: 25px;
    display: grid;
    place-items: center;
    color: #fff;
    background: #555;
    border-radius: 3px;
    font-size: 12px;
}
.ranking li:nth-child(1)::before { background: #d4a600; }
.ranking li:nth-child(2)::before { background: #8b98a3; }
.ranking li:nth-child(3)::before { background: #a96731; }

.count {
    display: inline-block;
    margin-left: 5px;
    color: var(--accent-dark);
    font-size: 12px;
    font-weight: 700;
}

.article-meta {
    margin-top: 3px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    color: var(--muted);
    font-size: 12px;
}

.article-meta .count { margin-left: 0; }

.list-date {
    margin-top: 4px;
    display: block;
    color: var(--muted);
    font-size: 12px;
}

.tag-cloud { padding: 14px; line-height: 1.6; }
.tag-cloud a, .tags a {
    display: inline-block;
    margin: 3px 2px;
    padding: 3px 9px;
    color: #555;
    background: #f7f7f7;
    border: 1px solid #d8d8d8;
    border-radius: 999px;
    font-size: 13px !important;
}
.tag-cloud a:hover, .tags a:hover {
    color: #fff;
    background: var(--accent);
    border-color: var(--accent);
    text-decoration: none;
}

.tag-cloud .tag-extra { display: none; }
.tag-cloud.is-expanded .tag-extra { display: inline-block; }

.tag-toggle {
    width: calc(100% - 28px);
    margin: 0 14px 14px;
    padding: 8px 12px;
    color: #444;
    background: #f4f4f4;
    border: 1px solid #ccc;
    border-radius: 3px;
    font-weight: 700;
    cursor: pointer;
}

.tag-toggle:hover {
    color: #fff;
    background: var(--accent);
    border-color: var(--accent);
}

.breadcrumb {
    margin: 0 0 10px;
    color: var(--muted);
    font-size: 13px;
}

.article {
    padding: clamp(20px, 4vw, 38px);
    background: var(--paper);
    border: 1px solid #d6d6d6;
    border-top: 5px solid var(--accent);
    border-radius: 3px;
    box-shadow: 0 2px 7px rgba(0, 0, 0, .07);
}

.article h1 {
    margin: 0 0 8px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line);
    font-size: clamp(24px, 4.5vw, 36px);
    line-height: 1.35;
}

.posttime { color: var(--muted); font-size: 13px; }
.posttime::before { content: "公開："; }

.article-body {
    margin-top: 26px;
    color: #292929;
    font-size: 17px;
    line-height: 2;
}

.tags { margin-top: 24px; padding-top: 13px; border-top: 1px dotted #bbb; }

.reaction-heading {
    margin: 28px 0 12px;
    padding: 8px 13px;
    color: #fff;
    background: #272727;
    border-left: 7px solid var(--accent);
    font-size: 20px;
}

.comment {
    margin-top: 12px;
    padding: 15px 18px;
    background: #fff;
    border: 1px solid #d8d8d8;
    border-left: 4px solid #777;
    border-radius: 2px;
    box-shadow: none;
}
.comment-header {
    margin-bottom: 8px;
    padding-bottom: 7px;
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    align-items: center;
    border-bottom: 1px dotted #ccc;
    font-size: 12px;
}

.comment-number { color: #167236; font-weight: 800; }
.comment-date { color: var(--muted); }
.comment-body { color: #222; word-break: break-word; }

.good-count { margin-left: auto; color: #bc6200; font-weight: 800; }
.goodBtn {
    padding: 3px 7px;
    background: #fff3b0;
    border: 1px solid #e8ce59;
    border-radius: 4px;
    cursor: pointer;
}

.comment-form {
    margin-top: 24px;
    padding: 20px;
    background: #fff;
    border: 1px solid #d6d6d6;
    border-top: 4px solid var(--accent);
    border-radius: 3px;
    box-shadow: none;
}
.comment-form h2 { margin: 0 0 12px; font-size: 20px; }
.comment-form textarea {
    width: 100%;
    min-height: 130px;
    padding: 12px;
    resize: vertical;
    background: #fafafa;
    border: 1px solid #aaa;
    border-radius: 3px;
    font: inherit;
}
.comment-form textarea:focus { outline: 2px solid #ffb1a8; border-color: var(--accent); }
.comment-form button {
    margin-top: 10px;
    padding: 10px 28px;
    color: #fff;
    background: linear-gradient(#f0442f, #c92512);
    border: 0;
    border-radius: 3px;
    font-weight: 800;
    cursor: pointer;
}
.comment-form button:hover { filter: brightness(1.08); }

.site-footer {
    padding: 24px 16px;
    color: #aaa;
    background: #1d1d1d;
    border-top: 4px solid var(--accent);
    text-align: center;
    font-size: 12px;
}

.site-footer .rss-link {
    margin-left: 14px;
    color: #ffd84d;
    font-weight: 700;
}

.site-footer .rss-link:hover {
    color: #fff;
}

@media (max-width: 760px) {
    .site-header-inner { min-height: 74px; padding: 10px 13px; }
    .site-brand { font-size: 20px; }
    .site-brand img { width: 46px; height: 46px; }
    .site-tagline { display: none; }
    .container { margin-top: 14px; padding: 0 10px; }
    .home-grid { grid-template-columns: 1fr; gap: 0; }
    .box h2 { font-size: 16px; }
    .box li { padding-top: 10px; padding-bottom: 10px; }
    .article { padding: 18px 15px; }
    .article-body { font-size: 16px; line-height: 1.9; }
    .comment { padding: 13px 12px; }
}