/* 整体风格参考 https://www.yinwang.org/ ：白色顶栏、浅灰底、圆角卡片、暖棕色主题色 */

:root {
    --theme-100: #f7f0df;
    --theme-200: #efe3c3;
    --theme-400: #d4b07f;
    --theme-600: #bd8e5d;
    --theme-700: #a57647;
    --theme-900: #6f4620;

    --bg: #f9fafb;
    --surface: #ffffff;
    --text: #111827;
    --heading: #1f2937;
    --body: #374151;
    --muted: #6b7280;
    --faint: #9ca3af;
    --excerpt: #4b5563;
    --code-bg: #f6f3ec;
    --pre-bg: #fafaf7;
    --footer-bg: #f3f4f6;
}

@media (prefers-color-scheme: dark) {
    :root {
        --theme-100: #374151;
        --theme-200: #374151;
        --theme-400: #a57647;
        --theme-600: #bd8e5d;
        --theme-700: #d4b07f;
        --theme-900: #e6cfa8;

        --bg: #111827;
        --surface: #1f2937;
        --text: #f3f4f6;
        --heading: #ffffff;
        --body: #d1d5db;
        --muted: #9ca3af;
        --faint: #6b7280;
        --excerpt: #d1d5db;
        --code-bg: #374151;
        --pre-bg: #111827;
        --footer-bg: #1f2937;
    }
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    color: var(--text);
    font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.5;
}

a {
    color: inherit;
    text-decoration: none;
}

/* 顶栏 */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--surface);
    border-bottom: 1px solid var(--theme-200);
    box-shadow: 0 1px 2px rgba(0, 0, 0, .05);
}

.site-header .bar {
    display: flex;
    align-items: center;
    height: 64px;
    padding: 0 12px;
}

.site-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-right: 32px;
    white-space: nowrap;
}

.site-nav {
    display: flex;
    gap: 24px;
}

.site-nav a {
    font-weight: 500;
    color: var(--body);
    transition: color .2s;
}

.site-nav a:hover,
.site-nav a.active {
    color: var(--theme-600);
}

main {
    flex-grow: 1;
}

.site-footer {
    background: var(--footer-bg);
    color: var(--muted);
    text-align: center;
    font-size: 14px;
    padding: 32px 16px;
    margin-top: 32px;
}

/* 首页 */

.container {
    max-width: 1152px;
    margin: 0 auto;
    padding: 32px 16px;
}

.page-title {
    font-size: 36px;
    line-height: 40px;
    font-weight: 700;
    color: var(--heading);
    margin: 0 0 8px;
}

.page-subtitle {
    color: var(--muted);
    margin: 0 0 24px;
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--theme-200);
    margin-bottom: 24px;
}

.tabs span {
    padding: 12px 16px;
    font-weight: 500;
    color: var(--theme-700);
    border-bottom: 2px solid var(--theme-600);
    margin-bottom: -1px;
}

.layout {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.post-list {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar {
    width: 288px;
    flex-shrink: 0;
    position: sticky;
    top: 88px;
}

.card {
    display: block;
    background: var(--surface);
    border: 1px solid var(--theme-200);
    border-radius: 16px;
    padding: 24px;
    transition: box-shadow .3s, border-color .3s;
}

a.card:hover {
    border-color: var(--theme-400);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 8px 10px -6px rgba(0, 0, 0, .1);
}

.card h2 {
    font-size: 24px;
    line-height: 32px;
    font-weight: 700;
    color: var(--heading);
    margin: 0 0 12px;
    transition: color .3s;
}

a.card:hover h2 {
    color: var(--theme-700);
}

.card .excerpt {
    color: var(--excerpt);
    line-height: 1.625;
    margin: 0 0 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card .excerpt:empty {
    display: none;
}

.meta {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--muted);
}

.meta svg {
    width: 14px;
    height: 14px;
    color: var(--theme-600);
}

.card .meta {
    padding-top: 16px;
    border-top: 1px solid var(--theme-100);
}

.panel h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--body);
    margin: 0 0 16px;
}

.pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.pill {
    padding: 4px 12px;
    font-size: 14px;
    line-height: 20px;
    border: 0;
    border-radius: 9999px;
    background: var(--theme-100);
    color: var(--theme-900);
    font-family: inherit;
    cursor: pointer;
    transition: background-color .2s;
}

.pill:hover {
    background: var(--theme-200);
}

.pill.active {
    background: var(--theme-600);
    color: #fff;
}

/* 手记 */

.notes-wrap {
    max-width: 672px;
    margin: 0 auto;
    padding: 32px 16px;
}

.back {
    display: inline-block;
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 16px;
}

.back:hover {
    color: var(--theme-600);
}

.notes {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.note {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--theme-200);
    border-radius: 12px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, .05);
    overflow: hidden;
    scroll-margin-top: 80px;
    transition: box-shadow .2s;
}

.note:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);
}

.note.collapsed:not(.open) {
    cursor: pointer;
}

.note-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px 4px;
    font-size: 14px;
    color: var(--faint);
    font-variant-numeric: tabular-nums;
}

.note-link {
    display: flex;
    color: var(--faint);
    transition: color .2s;
}

.note-link:hover {
    color: var(--theme-600);
}

.note-link svg, .note-toggle svg {
    width: 16px;
    height: 16px;
}

.note-title {
    font-size: 24px;
    line-height: 1.375;
    font-weight: 600;
    color: var(--heading);
    margin: 8px 20px;
}

.note-body {
    padding: 4px 20px 16px;
}

.note.collapsed:not(.open) .note-body {
    max-height: 192px;
    overflow: hidden;
    padding-bottom: 0;
    -webkit-mask-image: linear-gradient(to bottom, #000 60%, transparent);
    mask-image: linear-gradient(to bottom, #000 60%, transparent);
}

.note-foot {
    display: flex;
    justify-content: center;
    padding: 4px 0;
}

.note-toggle {
    display: flex;
    padding: 2px 16px;
    border: 0;
    background: none;
    color: var(--faint);
    cursor: pointer;
    transition: color .2s;
}

.note-toggle:hover {
    color: var(--theme-600);
}

.note.open .note-toggle svg {
    transform: rotate(180deg);
}

.note-toggle[hidden] {
    display: none;
}

.note-body.prose {
    font-size: 16px;
    line-height: 28px;
}

.note-body.prose p {
    margin: 0 0 16px;
}

.note-body.prose h1, .note-body.prose h2, .note-body.prose h3, .note-body.prose h4 {
    font-weight: 600;
    margin: 28px 0 12px;
}

.note-body.prose h1 { font-size: 22px; }
.note-body.prose h2 { font-size: 20px; }
.note-body.prose h3 { font-size: 18px; }
.note-body.prose h4 { font-size: 16px; }

.note-body.prose > :first-child {
    margin-top: 0;
}

.empty {
    color: var(--muted);
    text-align: center;
    padding: 48px 0;
}

/* 文章页 */

.article-wrap {
    max-width: 768px;
    margin: 32px auto 0;
    padding: 0 16px;
}

article.post {
    background: var(--surface);
    border-radius: 8px;
    padding: 32px;
}

article.post > h1 {
    font-size: 36px;
    line-height: 1.15;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 16px;
}

article.post > .meta {
    padding-bottom: 24px;
    margin-bottom: 32px;
    border-bottom: 1px solid var(--theme-200);
}

.prose {
    color: var(--body);
    font-size: 18px;
    line-height: 32px;
    overflow-wrap: break-word;
}

.prose p {
    margin: 0 0 24px;
}

.prose h1, .prose h2, .prose h3, .prose h4 {
    color: var(--heading);
    font-weight: 700;
    line-height: 1.4;
    margin: 40px 0 16px;
}

.prose h1 { font-size: 28px; }
.prose h2 { font-size: 24px; }
.prose h3 { font-size: 20px; }
.prose h4 { font-size: 18px; }

.prose a {
    color: var(--theme-700);
    border-bottom: 1px solid var(--theme-400);
}

.prose a:hover {
    color: var(--theme-600);
}

.prose ul, .prose ol {
    padding-left: 28px;
    margin: 0 0 24px;
}

.prose li {
    margin: 4px 0;
}

.prose blockquote {
    margin: 0 0 24px;
    padding: 4px 20px;
    border-left: 4px solid var(--theme-400);
    background: var(--theme-100);
    border-radius: 0 8px 8px 0;
    color: var(--body);
}

.prose blockquote p {
    margin: 12px 0;
}

.prose img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 16px auto;
    border-radius: 8px;
}

.img-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 8px;
    margin: 0 0 16px;
}

.prose .img-gallery a {
    border: 0;
}

.prose .img-gallery img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    margin: 0;
    cursor: zoom-in;
}

.prose code {
    font-family: ui-monospace, Consolas, "Cascadia Code", Menlo, monospace;
    font-size: .875em;
    background: var(--code-bg);
    padding: 2px 6px;
    border-radius: 4px;
}

.prose pre {
    background: var(--pre-bg);
    border: 1px solid var(--theme-200);
    border-radius: 8px;
    padding: 16px;
    margin: 0 0 24px;
    overflow-x: auto;
    font-size: 15px;
    line-height: 1.6;
}

.prose pre code {
    background: none;
    padding: 0;
    font-size: inherit;
}

.prose div.highlight, .prose figure.highlight {
    margin: 0;
}

.prose table {
    border-collapse: collapse;
    margin: 0 0 24px;
    display: block;
    overflow-x: auto;
}

.prose th, .prose td {
    border: 1px solid var(--theme-200);
    padding: 6px 12px;
}

.prose th {
    background: var(--theme-100);
}

.prose hr {
    border: 0;
    border-top: 1px solid var(--theme-200);
    margin: 32px 0;
}

@media (max-width: 1023px) {
    .layout {
        flex-direction: column-reverse;
    }

    .sidebar {
        position: static;
        width: 100%;
    }
}

@media (max-width: 640px) {
    .site-brand {
        margin-right: 20px;
    }

    .site-nav {
        gap: 16px;
    }

    .page-title, article.post > h1 {
        font-size: 28px;
        line-height: 1.25;
    }

    .card {
        padding: 20px;
    }

    .card h2 {
        font-size: 20px;
        line-height: 28px;
    }

    .notes-wrap {
        padding: 24px 8px;
    }

    .note-head, .note-body {
        padding-left: 16px;
        padding-right: 16px;
    }

    .note-title {
        font-size: 20px;
        margin: 8px 16px;
    }

    .article-wrap {
        margin-top: 16px;
        padding: 0 8px;
    }

    article.post {
        padding: 20px 16px;
    }

    .prose {
        font-size: 17px;
        line-height: 30px;
    }
}

/* 代码高亮（rouge） */

.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs { color: #998; font-style: italic; }
.highlight .cp { color: #099; }
.highlight .err { color: #a00; }
.highlight .k, .highlight .kc, .highlight .kd, .highlight .kn, .highlight .kp, .highlight .kr, .highlight .kt { color: #cc7832; }
.highlight .o, .highlight .ow { color: #555; }
.highlight .m, .highlight .mf, .highlight .mh, .highlight .mi, .highlight .mo, .highlight .il { color: #6897bb; }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sc, .highlight .sd, .highlight .se, .highlight .sh, .highlight .sx { color: #c30; }
.highlight .sr { color: #3aa; }
.highlight .na { color: #9876aa; }
.highlight .nb, .highlight .bp { color: #366; }
.highlight .nc { color: #2b6c8a; font-weight: 600; }
.highlight .nf { color: #182669; }
.highlight .nt { color: #2f6f9f; }
.highlight .nd { color: #77c; }
.highlight .ne { color: #c00; }
.highlight .gd { background: #fcc; }
.highlight .gi { background: #cfc; }

@media (prefers-color-scheme: dark) {
    .highlight .o, .highlight .ow { color: #bbb; }
    .highlight .nb, .highlight .bp { color: #6cc; }
    .highlight .nc { color: #7cc4e6; }
    .highlight .nf { color: #8fa8f0; }
    .highlight .nt { color: #7ab3e0; }
    .highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sc, .highlight .sd, .highlight .se, .highlight .sh, .highlight .sx { color: #e8916a; }
}