/* ============================================================
 * 文章页 / 天数聚合页样式
 * 复用主站 .page-shell / .envelope / .link-card 组件
 * ============================================================ */

/* ---------- 页面容器 ---------- */
.article-shell {
    padding-bottom: 48px;
}

/* ---------- 顶部返回按钮（sticky，始终可见） ---------- */
.article-back-top {
    position: sticky;
    top: 0;
    z-index: 10;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    margin-bottom: 18px;
    border-radius: 999px;
    color: #fff;
    background: var(--red);
    font-size: 14px;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(255, 57, 63, .25);
    transition: .18s;
    -webkit-tap-highlight-color: transparent;
}

.article-back-top:hover {
    background: var(--red-deep);
    transform: translateY(-1px);
}

.article-back-top .svg-icon {
    width: 16px;
    height: 16px;
}

/* ---------- 面包屑 ---------- */
.article-breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 18px;
    color: var(--muted);
    font-size: 12.5px;
}

.article-breadcrumb a {
    color: var(--muted);
    text-decoration: none;
}

.article-breadcrumb a:hover {
    color: var(--red);
}

.article-breadcrumb .sep {
    color: #c8b8b9;
}

/* ---------- 正文信封 ---------- */
.article-envelope {
    padding: 36px 44px 32px;
    border-radius: 24px;
    background: linear-gradient(145deg, rgba(255,255,255,.78), rgba(255,238,235,.68));
    box-shadow: 0 24px 60px rgba(137,59,65,.13), inset 0 1px 1px #fff;
}

.article-hero h1 {
    margin: 0 0 10px;
    font-family: "Songti SC", "STSong", serif;
    font-size: clamp(22px, 3.6vw, 30px);
    font-weight: 900;
    line-height: 1.35;
    letter-spacing: .01em;
}

.article-hero h1::after {
    content: "";
    display: block;
    width: 56px;
    height: 4px;
    margin-top: 14px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--red), #ff9aa0);
}

/* ---------- 正文 ---------- */
.article-body {
    margin-top: 26px;
    color: #3f3031;
    font-size: 15px;
    line-height: 1.9;
    word-wrap: break-word;
}

.article-body h2 {
    margin: 32px 0 12px;
    padding-left: 12px;
    border-left: 4px solid var(--red);
    color: var(--ink);
    font-size: 18px;
    font-weight: 800;
    line-height: 1.5;
}

.article-body h3 {
    margin: 24px 0 10px;
    color: var(--red-deep);
    font-size: 15.5px;
    font-weight: 800;
}

.article-body p {
    margin: 0 0 14px;
}

.article-body ol,
.article-body ul {
    margin: 0 0 14px;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 8px;
}

.article-body li::marker {
    color: var(--red);
    font-weight: 800;
}

.article-body strong {
    color: var(--ink);
    font-weight: 800;
}

.article-body a {
    color: var(--red-deep);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ---------- 相关阅读（纯文字） ---------- */
.article-related {
    margin-top: 28px;
    padding: 0 4px;
}

.article-related h2 {
    margin: 0 0 10px;
    font-size: 14px;
    font-weight: 800;
    color: var(--red-deep);
    letter-spacing: .06em;
}

.article-related-links {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 2;
}

.article-related-links a {
    color: var(--muted);
    text-decoration: none;
    transition: .15s;
}

.article-related-links a:hover {
    color: var(--red);
}

/* ---------- 底部返回按钮 ---------- */
.article-back-bottom {
    margin-top: 30px;
    text-align: center;
}

/* ---------- 天数聚合页 ---------- */
.days-summary {
    margin: 22px 0 18px;
    color: #5a4a4b;
    font-size: 14.5px;
    line-height: 1.85;
}

.days-summary strong {
    color: var(--red-deep);
    font-weight: 900;
}

/* 天数切换 —— 复用主站 .sort-tabs 视觉 */
.days-switch {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 3px;
    margin: 0 0 22px;
    border-radius: 999px;
    background: rgba(255,255,255,.75);
    border: 1px solid var(--line);
}

.days-switch a {
    padding: 6px 16px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    line-height: 1;
    transition: .15s;
    white-space: nowrap;
}

.days-switch a:hover {
    color: var(--ink);
}

.days-switch a.active {
    color: #fff;
    background: var(--red);
    box-shadow: 0 3px 10px rgba(255,57,63,.25);
}

/* 天数页列表：完全复用主站 .link-card */
.days-page .link-list {
    margin-top: 4px;
}

.days-page .link-card {
    padding: 16px 4px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
    .article-shell {
        padding-bottom: 32px;
    }

    .article-back-top {
        padding: 9px 16px;
        font-size: 13px;
        margin-bottom: 14px;
    }

    .article-breadcrumb {
        margin-bottom: 14px;
        font-size: 12px;
    }

    .article-envelope {
        padding: 22px 18px 20px;
        border-radius: 18px;
    }

    .article-hero h1 {
        font-size: 20px;
    }

    .article-body {
        margin-top: 20px;
        font-size: 14.5px;
        line-height: 1.85;
    }

    .article-body h2 {
        font-size: 16px;
        margin-top: 26px;
    }

    .article-body h3 {
        font-size: 14.5px;
    }

    .article-related {
        margin-top: 22px;
    }

    .article-related-links {
        font-size: 12.5px;
        line-height: 1.9;
    }

    .article-back-bottom {
        margin-top: 22px;
    }

    .days-summary {
        font-size: 13.5px;
    }

    .days-switch a {
        padding: 5px 13px;
        font-size: 12.5px;
    }
}

@media (max-width: 380px) {
    .article-envelope {
        padding: 18px 14px 16px;
    }

    .article-hero h1 {
        font-size: 18px;
    }

    .article-body {
        font-size: 14px;
    }
}