/* ============================================================
 * 澜玥 · 杂志风格主题
 * 设计理念：杂志大字号排版 + 首字下沉 + 双栏布局 + 衬线字体
 * 设计参考：The New Yorker / Medium Magazine / VOGUE
 * ============================================================ */

/* ===== CSS 变量 ===== */
:root {
    --primary: #8b1f2c;
    --primary-soft: color-mix(in srgb, var(--primary) 10%, transparent);
    --primary-soft-2: color-mix(in srgb, var(--primary) 5%, transparent);
    --primary-hover: color-mix(in srgb, var(--primary) 82%, #000);
    --text: #1a1a1a;
    --text-secondary: color-mix(in srgb, var(--text) 65%, transparent);
    --text-tertiary: color-mix(in srgb, var(--text) 38%, transparent);
    --bg: #f5f1e8;
    --card-bg: #fbf8f0;
    --muted: #7a7468;
    --border: color-mix(in srgb, var(--text) 14%, transparent);
    --border-soft: color-mix(in srgb, var(--text) 7%, transparent);
    --code-bg: color-mix(in srgb, var(--text) 5%, var(--bg));
    --code-block-bg: color-mix(in srgb, var(--text) 4%, var(--card-bg));
    --selection: color-mix(in srgb, var(--primary) 28%, transparent);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.04), 0 6px 18px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
    --radius: 0px;
    --radius-sm: 0px;
    --radius-lg: 0px;
    --max-width: 720px;
    --font-base: Georgia, 'Times New Roman', 'Source Han Serif SC', 'Noto Serif CJK SC', serif;
    --font-title: serif;
    --font-size: 17px;
    --reading-line-height: 1.95;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 暗色模式 ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --primary: color-mix(in srgb, #8b1f2c 85%, #d0d0d0);
        --primary-soft: color-mix(in srgb, var(--primary) 16%, transparent);
        --primary-soft-2: color-mix(in srgb, var(--primary) 8%, transparent);
        --primary-hover: color-mix(in srgb, var(--primary) 90%, #fff);
        --text: #d8d4cc;
        --text-secondary: color-mix(in srgb, #d8d4cc 65%, transparent);
        --text-tertiary: color-mix(in srgb, #d8d4cc 38%, transparent);
        --bg: #181715;
        --card-bg: #1f1c18;
        --muted: #6b665d;
        --border: color-mix(in srgb, #d8d4cc 12%, transparent);
        --border-soft: color-mix(in srgb, #d8d4cc 6%, transparent);
        --code-bg: color-mix(in srgb, #d8d4cc 5%, #181715);
        --code-block-bg: #1c1a16;
        --selection: color-mix(in srgb, var(--primary) 30%, transparent);
    }
}

/* ===== 基础重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
*::selection { background: var(--selection); color: var(--text); }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; }
body {
    font-family: var(--font-base);
    font-size: var(--font-size);
    line-height: var(--reading-line-height);
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-title);
    color: var(--text);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-hover); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
img, video { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ===== 页面布局 ===== */
.page { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }

/* ===== 顶部导航（杂志感：极简 + 居中）===== */
.site-header {
    background: var(--bg);
    border-bottom: 2px solid var(--text);
    position: relative;
}
.site-header::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -6px;
    height: 1px;
    background: var(--text);
}
.site-header .container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 28px 32px 22px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    text-align: center;
}
.site-brand {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 16px;
    text-decoration: none;
    color: var(--text);
    font-family: var(--font-title);
}
.site-brand:hover { text-decoration: none; color: var(--primary); }
.site-avatar {
    width: 64px; height: 64px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--text);
    transition: transform var(--transition);
    flex-shrink: 0;
}
.site-brand:hover .site-avatar { transform: scale(1.05); }
.site-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    text-align: left;
}
.site-logo {
    font-family: var(--font-title);
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1;
    text-transform: uppercase;
    color: var(--text);
    text-decoration: none;
    transition: color var(--transition);
}
.site-logo:hover { color: var(--primary); text-decoration: none; }
.site-description {
    font-size: 13px;
    color: var(--muted);
    font-style: italic;
    letter-spacing: 0.04em;
    margin: 0;
    font-family: var(--font-title);
}
.site-author {
    font-size: 11px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-weight: 600;
    margin: 0;
}
.site-nav {
    display: flex;
    align-items: center;
    gap: 0;
    flex-wrap: wrap;
    justify-content: center;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 0;
    margin: 0 -32px;
    width: calc(100% + 64px);
    margin-top: 8px;
}
.site-nav .nav-link,
.site-nav a {
    color: var(--text);
    padding: 14px 24px;
    font-size: 14.5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: all var(--transition);
    text-decoration: none;
    position: relative;
}
.site-nav .nav-link + .nav-link,
.site-nav a + a { border-left: 1px solid var(--border); }
.site-nav .nav-link:hover,
.site-nav a:hover {
    color: var(--bg);
    background: var(--text);
    text-decoration: none;
}
.site-nav .nav-link.active,
.site-nav a.active { color: var(--primary); }

/* ===== Hero 介绍区（杂志封面感）===== */
.hero {
    padding: 80px 32px 56px;
    text-align: center;
    position: relative;
    border-bottom: 1px solid var(--border-soft);
    margin: 0 -32px 56px;
}
.hero::before {
    content: 'ISSUE';
    position: absolute;
    top: 28px;
    left: 32px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--muted);
}
.hero::after {
    content: '✦  ✦  ✦';
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--primary);
    letter-spacing: 0.5em;
    font-size: 12px;
}
.hero-greeting {
    display: block;
    font-size: 12px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.25em;
    font-weight: 700;
    margin-bottom: 16px;
    font-family: var(--font-title);
}
.hero-title {
    font-family: var(--font-title);
    font-size: 64px;
    line-height: 1.05;
    margin: 0 0 16px;
    color: var(--text);
    letter-spacing: -0.025em;
    font-weight: 800;
    text-transform: uppercase;
}
.hero-desc {
    color: var(--text-secondary);
    font-size: 18px;
    max-width: 620px;
    margin: 0 auto 28px;
    line-height: 1.7;
    font-style: italic;
    font-family: var(--font-title);
}

/* ===== 文章列表 ===== */
.post-list { padding: 0 0 80px; }
.post-list-title {
    font-size: 12px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.25em;
    font-weight: 700;
    margin-bottom: 40px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--text);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.post-list-title::after {
    content: '最新文章';
    color: var(--text);
    font-size: 14px;
    font-weight: 700;
    text-transform: none;
    letter-spacing: 0.02em;
}
.post-list-grid { display: grid; gap: 48px; grid-template-columns: 1fr; }

/* ===== 文章卡片（杂志封面式）===== */
.post-card {
    background: var(--card-bg);
    overflow: hidden;
    transition: transform var(--transition);
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border-bottom: 1px solid var(--border-soft);
    padding-bottom: 36px;
}
.post-card:last-child { padding-bottom: 0; }
:root[data-card="shadow"] .post-card,
.card-style-shadow .post-card { box-shadow: var(--shadow-md); }
:root[data-card="border"] .post-card,
.card-style-border .post-card { border: 1px solid var(--border); padding-bottom: 0; }
:root[data-card="flat"] .post-card,
.card-style-flat .post-card { border-bottom: 1px solid var(--border-soft); }

.post-card-feature {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--code-block-bg);
    position: relative;
    margin-bottom: 0;
}
.post-card-feature a { display: block; height: 100%; }
.post-card-feature img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.post-card:hover .post-card-feature img { transform: scale(1.04); }

.post-card-body {
    padding: 28px 32px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
:root[data-card="border"] .post-card-body { padding: 28px 32px; }
.post-card-meta {
    font-size: 12px;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 12px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 600;
    border-bottom: 1px solid var(--border-soft);
    padding-bottom: 12px;
    margin-bottom: 4px;
}
.post-card-meta .post-date { display: inline-flex; align-items: center; gap: 8px; }
.post-card-meta .post-date::after {
    content: '·';
    color: var(--border);
}
.post-card-title {
    font-family: var(--font-title);
    font-size: 36px;
    line-height: 1.15;
    margin: 0;
    color: var(--text);
    transition: color var(--transition);
    letter-spacing: -0.025em;
    font-weight: 800;
}
.post-card-title a { color: inherit; text-decoration: none; }
.post-card-title a:hover { color: var(--primary); text-decoration: none; }
.post-card-abstract {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 0;
    font-style: italic;
}
.post-card-abstract p { margin: 0; }

.post-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-top: 8px;
    padding-top: 14px;
    border-top: 1px solid var(--border-soft);
    flex-wrap: wrap;
}
.post-card-tags { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.post-card-tags .tag {
    color: var(--text);
    padding: 3px 0;
    font-size: 12px;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    transition: color var(--transition);
    border-bottom: 1px solid var(--border);
}
.post-card-tags .tag + .tag::before { content: '· '; color: var(--muted); margin-right: 6px; }
.post-card-tags .tag:hover { color: var(--primary); border-bottom-color: var(--primary); text-decoration: none; }
.read-more {
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 0;
    font-size: 12.5px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    transition: gap var(--transition);
    white-space: nowrap;
}
.read-more:hover { text-decoration: none; gap: 10px; color: var(--primary-hover); }
.read-more::after { content: '→'; transition: transform var(--transition); }
.read-more:hover::after { transform: translateX(2px); }

/* ===== 文章详情页（杂志专题式）===== */
.post-detail { padding: 64px 0 32px; max-width: var(--max-width); margin: 0 auto; }
.post-header {
    text-align: center;
    margin-bottom: 56px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--text);
    position: relative;
}
.post-header::after {
    content: '·  ·  ·';
    position: absolute;
    bottom: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg);
    padding: 0 16px;
    color: var(--text);
    letter-spacing: 0.4em;
    font-size: 14px;
}
.post-title {
    font-family: var(--font-title);
    font-size: 52px;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text);
    letter-spacing: -0.03em;
    font-weight: 800;
}
.post-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-size: 12px;
    color: var(--muted);
    flex-wrap: wrap;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 600;
}
.post-meta .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--muted);
}
.post-meta .meta-item + .meta-item::before {
    content: '·';
    margin-right: 12px;
    color: var(--border);
}
.post-meta .meta-sep { color: var(--border); }
.post-tags { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.post-tags a {
    color: var(--text);
    padding: 4px 0;
    font-size: 12px;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
    transition: all var(--transition);
}
.post-tags a + a::before { content: '· '; color: var(--muted); margin-right: 8px; }
.post-tags a:hover { color: var(--primary); border-bottom-color: var(--primary); text-decoration: none; }
.post-feature { margin: 40px 0; overflow: hidden; }
.post-feature img { width: 100%; }

/* 详情页布局：TOC + 内容 */
.post-body-wrap { display: grid; grid-template-columns: 1fr; gap: 32px; align-items: start; }
@media (min-width: 1024px) {
    .post-body-wrap.with-toc { grid-template-columns: 1fr 200px; }
}
.post-content {
    font-size: var(--font-size);
    line-height: var(--reading-line-height);
    color: var(--text);
    word-break: break-word;
}

/* ===== 文章正文排版（杂志风格：首字下沉、宽行距、衬线）===== */
.post-content p { margin: 0 0 1.4em; }
.post-content > p:first-of-type::first-letter {
    font-family: var(--font-title);
    float: left;
    font-size: 4.6em;
    line-height: 0.9;
    font-weight: 800;
    margin: 6px 12px 0 0;
    color: var(--primary);
    padding-top: 4px;
    text-transform: uppercase;
}
.post-content h1, .post-content h2, .post-content h3, .post-content h4, .post-content h5, .post-content h6 {
    font-family: var(--font-title);
    margin: 2.2em 0 0.7em;
    color: var(--text);
    line-height: 1.25;
    scroll-margin-top: 80px;
    letter-spacing: -0.015em;
}
.post-content h1 { font-size: 1.9em; }
.post-content h2 {
    font-size: 1.7em;
    padding-bottom: 0.4em;
    border-bottom: 1px solid var(--border);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
}
.post-content h2::before, .post-content h2::after { content: '✦'; color: var(--primary); margin: 0 12px; font-size: 0.7em; vertical-align: middle; }
.post-content h3 { font-size: 1.4em; font-style: italic; }
.post-content h4 { font-size: 1.15em; }
.post-content h5 { font-size: 1em; }
.post-content h6 { font-size: 0.92em; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.1em; }

.post-content .header-anchor {
    color: var(--border);
    margin-left: 8px;
    font-weight: 400;
    opacity: 0;
    transition: opacity var(--transition);
    text-decoration: none;
}
.post-content h1:hover .header-anchor,
.post-content h2:hover .header-anchor,
.post-content h3:hover .header-anchor,
.post-content h4:hover .header-anchor,
.post-content h5:hover .header-anchor,
.post-content h6:hover .header-anchor { opacity: 1; }
.post-content .header-anchor:hover { color: var(--primary); text-decoration: none; }

.post-content a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid var(--primary-soft);
    transition: all var(--transition);
}
.post-content a:hover { color: var(--primary-hover); border-bottom-color: var(--primary); text-decoration: none; }
.post-content strong { color: var(--text); font-weight: 700; }
.post-content em { font-style: italic; color: var(--text); }
.post-content del { color: var(--text-tertiary); }
.post-content mark {
    background: linear-gradient(180deg, transparent 60%, var(--primary-soft) 60%);
    color: var(--text);
    padding: 0 2px;
}
.post-content hr {
    border: none;
    text-align: center;
    margin: 3em 0;
    color: var(--primary);
}
.post-content hr::before { content: '✦  ✦  ✦'; letter-spacing: 0.5em; font-size: 1.2em; }

.post-content blockquote {
    margin: 2em 0;
    padding: 24px 32px;
    border: none;
    border-top: 2px solid var(--text);
    border-bottom: 2px solid var(--text);
    background: transparent;
    color: var(--text-secondary);
    font-style: italic;
    font-size: 1.05em;
    text-align: center;
    font-family: var(--font-title);
    line-height: 1.7;
}
.post-content blockquote p { margin: 0.4em 0; }
.post-content blockquote p:first-child { margin-top: 0; }
.post-content blockquote p:last-child { margin-bottom: 0; }

.post-content ul, .post-content ol { margin: 0 0 1.4em; padding-left: 1.6em; }
.post-content li { margin: 0.4em 0; }
.post-content ul li { list-style: none; position: relative; padding-left: 4px; }
.post-content ul li::before {
    content: '—';
    color: var(--primary);
    position: absolute;
    left: -20px;
    font-weight: 700;
}
.post-content ol li { list-style: decimal; }
.post-content ul li::marker, .post-content ol li::marker { color: var(--primary); }
.post-content li > ul, .post-content li > ol { margin: 0.3em 0; }

.post-content code {
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
    font-size: 0.88em;
    padding: 2px 6px;
    background: var(--code-bg);
    color: color-mix(in srgb, var(--primary) 70%, var(--text));
    border-radius: 0;
}
.post-content pre {
    margin: 2em 0;
    padding: 24px 28px;
    background: var(--code-block-bg);
    border: 1px solid var(--border);
    border-radius: 0;
    overflow-x: auto;
    line-height: 1.65;
    position: relative;
    font-size: 0.92em;
}
.post-content pre code { padding: 0; background: transparent; color: var(--text); font-size: inherit; }
.code-copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 12px;
    background: transparent;
    border: 1px solid var(--text);
    color: var(--text);
    font-size: 11px;
    cursor: pointer;
    opacity: 0;
    transition: all var(--transition);
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 700;
}
.post-content pre:hover .code-copy-btn { opacity: 1; }
.code-copy-btn:hover { color: var(--primary); border-color: var(--primary); }
.code-copy-btn.copied { color: var(--primary); border-color: var(--primary); }

.post-content table { width: 100%; margin: 1.8em 0; border-collapse: collapse; font-size: 0.95em; display: block; overflow-x: auto; }
.post-content th, .post-content td { padding: 12px 16px; border-bottom: 1px solid var(--border); text-align: left; }
.post-content th { background: transparent; font-weight: 700; color: var(--text); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.88em; border-bottom: 2px solid var(--text); }

.post-content img { margin: 1.6em auto; cursor: zoom-in; transition: transform var(--transition); }
.post-content img:hover { transform: scale(1.01); }
.post-content figure { margin: 1.8em 0; }
.post-content figcaption { text-align: center; font-size: 13px; color: var(--muted); margin-top: 10px; font-style: italic; font-family: var(--font-title); }

/* ===== TOC 目录（杂志专栏感）===== */
.post-toc {
    position: sticky;
    top: 80px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    font-size: 13px;
    line-height: 1.7;
    padding: 18px 20px;
    border: 1px solid var(--text);
    background: var(--card-bg);
}
.post-toc-title {
    font-size: 11px;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-weight: 700;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--text);
    font-family: var(--font-title);
}
.post-toc ul { list-style: none; padding: 0; margin: 0; }
.post-toc li { margin: 4px 0; }
.post-toc a {
    color: var(--text-secondary);
    text-decoration: none;
    display: block;
    padding: 4px 0;
    transition: all var(--transition);
    border-left: none;
}
.post-toc a:hover { color: var(--primary); text-decoration: underline; padding-left: 6px; }
.post-toc a.active { color: var(--primary); font-weight: 700; }
.post-toc .toc-h3 { padding-left: 14px; }
.post-toc .toc-h4 { padding-left: 28px; font-size: 12.5px; }

/* ===== 上下篇文章导航 ===== */
.post-navigation { margin: 64px 0 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 32px; border-top: 1px solid var(--text); padding-top: 32px; }
.post-nav { text-decoration: none; color: var(--text); display: flex; flex-direction: column; gap: 6px; transition: all var(--transition); }
.post-nav:hover { text-decoration: none; color: var(--primary); }
.post-nav.prev { text-align: left; }
.post-nav.next { text-align: right; }
.post-nav .nav-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.18em; font-weight: 700; }
.post-nav .nav-title { font-size: 18px; color: var(--text); font-weight: 700; line-height: 1.3; font-family: var(--font-title); transition: color var(--transition); }
.post-nav:hover .nav-title { color: var(--primary); }

/* ===== 评论占位 ===== */
.comment-placeholder { margin: 48px 0 24px; padding: 32px; background: transparent; border: 1px solid var(--border); text-align: center; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: 0.15em; }

/* ===== 标签页 / 归档 / 友链 ===== */
.tag-detail, .archives-page, .friend-links-page { padding: 64px 0 80px; }
.page-title {
    font-family: var(--font-title);
    font-size: 40px;
    margin-bottom: 40px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--text);
    color: var(--text);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    font-weight: 800;
}
.tags-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 0; }
.tag-card {
    display: flex;
    flex-direction: column;
    padding: 20px 22px;
    background: transparent;
    border: 1px solid var(--border);
    text-decoration: none;
    color: var(--text);
    transition: all var(--transition);
    position: relative;
    margin: -1px 0 0 -1px;
}
.tag-card:hover { background: var(--text); color: var(--bg); text-decoration: none; z-index: 1; }
.tag-card .tag-name {
    font-size: 16px;
    font-weight: 700;
    color: inherit;
    margin-bottom: 4px;
    font-family: var(--font-title);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.tag-card .tag-count {
    font-size: 11px;
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

/* 归档页 */
.archive-year { margin-bottom: 40px; }
.archive-year-title {
    font-family: var(--font-title);
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--text);
    font-weight: 800;
    letter-spacing: -0.01em;
}
.archive-list { list-style: none; padding: 0; margin: 0; }
.archive-item {
    display: flex;
    align-items: baseline;
    gap: 24px;
    padding: 14px 0;
    border-bottom: 1px dashed var(--border-soft);
    transition: padding-left var(--transition);
}
.archive-item:hover { padding-left: 6px; }
.archive-date { color: var(--muted); font-size: 13px; font-family: ui-monospace, monospace; min-width: 90px; flex-shrink: 0; }
.archive-title { color: var(--text); text-decoration: none; font-size: 15px; flex: 1; transition: color var(--transition); font-family: var(--font-title); }
.archive-title:hover { color: var(--primary); text-decoration: none; }

/* 友链页 */
.friend-links-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }
.friend-link-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    text-decoration: none;
    color: var(--text);
    transition: all var(--transition);
}
.friend-link-card:hover { background: var(--text); color: var(--bg); text-decoration: none; }
.friend-link-card:hover .friend-link-name,
.friend-link-card:hover .friend-link-desc { color: var(--bg); }
.friend-link-avatar { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; flex-shrink: 0; background: var(--code-block-bg); }
.friend-link-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.friend-link-name { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 0; font-family: var(--font-title); transition: color var(--transition); }
.friend-link-desc { font-size: 12.5px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color var(--transition); }

/* ===== 分页 ===== */
.pagination { display: flex; align-items: center; justify-content: center; gap: 12px; margin: 56px 0 24px; flex-wrap: wrap; }
.pagination a, .pagination span { padding: 8px 18px; font-size: 13px; color: var(--text); text-decoration: none; transition: all var(--transition); text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; }
.pagination a { border: 1px solid var(--text); }
.pagination a:hover { background: var(--text); color: var(--bg); text-decoration: none; }
.pagination .page-info { color: var(--muted); font-size: 12px; padding: 0 6px; }

/* ===== 页脚 ===== */
.site-footer { margin-top: auto; padding: 48px 24px 32px; text-align: center; color: var(--muted); font-size: 12px; border-top: 2px solid var(--text); text-transform: uppercase; letter-spacing: 0.15em; font-weight: 600; }
.site-footer p { margin: 0; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--primary); }

/* ===== 阅读进度条 / 回到顶部 / 图片放大 ===== */
.reading-progress-container { position: fixed; top: 0; left: 0; right: 0; height: 3px; background: transparent; z-index: 1000; pointer-events: none; }
.reading-progress-bar { height: 100%; width: 0%; background: var(--primary); transition: width 0.1s linear; }
.back-to-top {
    position: fixed; bottom: 32px; right: 24px; width: 48px; height: 48px;
    background: var(--bg); border: 1px solid var(--text);
    color: var(--text); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    z-index: 90; opacity: 0; transform: translateY(8px);
    pointer-events: none; transition: all var(--transition);
    font-family: var(--font-title); font-size: 12px; font-weight: 700; letter-spacing: 0.1em;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { background: var(--text); color: var(--bg); }
.image-zoom-overlay { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.95); z-index: 200; display: flex; align-items: center; justify-content: center; padding: 32px; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; cursor: zoom-out; }
.image-zoom-overlay.visible { opacity: 1; pointer-events: auto; }
.image-zoom-img { max-width: 100%; max-height: 100%; object-fit: contain; transform: scale(0.9); transition: transform 0.3s ease; }
.image-zoom-overlay.visible .image-zoom-img { transform: scale(1); }
.empty { text-align: center; padding: 64px 24px; color: var(--muted); font-size: 14px; }

/* ===== 响应式：平板 ===== */
@media (max-width: 768px) {
    .page { padding: 0 18px; }
    .site-header .container { padding: 20px 18px 16px; gap: 14px; }
    .site-nav { margin: 0 -18px; width: calc(100% + 36px); }
    .site-nav .nav-link,
    .site-nav a { padding: 12px 14px; font-size: 12.5px; letter-spacing: 0.05em; }
    .site-nav .nav-link + .nav-link,
    .site-nav a + a { border-left: 1px solid var(--border); }
    .site-brand { gap: 12px; }
    .site-avatar { width: 52px; height: 52px; }
    .site-logo { font-size: 26px; }
    .site-description { font-size: 12px; }
    .site-author { font-size: 10px; }

    .hero { padding: 48px 18px 40px; margin: 0 -18px 32px; }
    .hero-title { font-size: 36px; }
    .hero-greeting { font-size: 10px; margin-bottom: 12px; }
    .hero-desc { font-size: 15px; margin-bottom: 20px; }
    .hero::before, .hero::after { font-size: 10px; }

    .post-list { padding: 0 0 56px; }
    .post-list-grid { grid-template-columns: 1fr !important; gap: 36px; }
    .post-list-title { margin-bottom: 28px; }

    .post-detail { padding: 40px 0 24px; }
    .post-title { font-size: 32px; }
    .post-header { margin-bottom: 40px; padding-bottom: 28px; }
    .post-card-body { padding: 20px 18px; }
    .post-card-title { font-size: 26px; }
    .post-card-abstract { font-size: 15px; }
    .post-card-footer { flex-direction: column; align-items: flex-start; gap: 12px; }
    .post-card-feature { aspect-ratio: 16 / 11; }

    .post-content > p:first-of-type::first-letter { font-size: 3.2em; }
    .post-content h1 { font-size: 1.6em; }
    .post-content h2 { font-size: 1.4em; }
    .post-content h3 { font-size: 1.2em; }
    .post-content blockquote { padding: 18px 22px; font-size: 1em; }
    .post-content pre { padding: 16px 18px; }

    .back-to-top { bottom: 20px; right: 16px; width: 42px; height: 42px; }

    .post-navigation { grid-template-columns: 1fr; gap: 20px; }
    .post-nav.next { text-align: left; }

    .friend-links-list { grid-template-columns: 1fr; }
    .friend-link-card { padding: 16px 18px; }

    .archive-item { flex-direction: column; align-items: flex-start; gap: 4px; }
    .archive-date { min-width: auto; }

    .page-title { font-size: 30px; margin-bottom: 28px; }
    .tags-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
    .tag-card { padding: 16px 18px; }

    .pagination { gap: 8px; margin: 40px 0 20px; }
    .pagination a, .pagination span { padding: 6px 14px; font-size: 12px; }

    .site-footer { padding: 32px 18px 24px; }
}

/* ===== 响应式：手机 ===== */
@media (max-width: 480px) {
    .page { padding: 0 14px; }
    .site-header .container { padding: 16px 14px 12px; gap: 12px; }
    .site-brand { gap: 10px; }
    .site-avatar { width: 48px; height: 48px; }
    .site-logo { font-size: 22px; }
    .site-description { font-size: 11px; }
    .site-author { font-size: 9px; letter-spacing: 0.12em; }
    .site-nav .nav-link,
    .site-nav a { padding: 10px 12px; font-size: 11.5px; letter-spacing: 0.04em; }

    .hero { padding: 36px 14px 30px; margin: 0 -14px 24px; }
    .hero-title { font-size: 28px; }
    .hero-greeting { font-size: 9px; margin-bottom: 10px; letter-spacing: 0.2em; }
    .hero-desc { font-size: 14px; margin-bottom: 16px; }
    .hero::before { top: 18px; left: 14px; }
    .hero::after { bottom: 16px; }

    .post-list-grid { gap: 28px; }
    .post-title { font-size: 26px; }
    .post-card-body { padding: 16px 14px; gap: 12px; }
    .post-card-title { font-size: 22px; }
    .post-card-abstract { font-size: 14px; -webkit-line-clamp: 3; }
    .post-card-meta { font-size: 11px; padding-bottom: 10px; }

    .post-content > p:first-of-type::first-letter { font-size: 2.8em; margin: 4px 8px 0 0; }
    .post-content h1 { font-size: 1.45em; }
    .post-content h2 { font-size: 1.25em; }
    .post-content h3 { font-size: 1.1em; }
    .post-content pre { padding: 14px 14px; font-size: 0.85em; }
    .post-content blockquote { padding: 14px 16px; }
    .post-content table { font-size: 0.88em; }
    .post-content th, .post-content td { padding: 8px 10px; }

    .post-navigation { gap: 16px; padding-top: 24px; margin: 40px 0 24px; }
    .post-nav .nav-title { font-size: 15px; }

    .friend-link-card { padding: 14px 14px; gap: 12px; }
    .friend-link-avatar { width: 38px; height: 38px; }
    .friend-link-name { font-size: 14px; }
    .friend-link-desc { font-size: 11.5px; }

    .tag-card { padding: 14px 16px; }
    .tag-card .tag-name { font-size: 14px; }
    .tag-card .tag-count { font-size: 10px; }

    .page-title { font-size: 24px; margin-bottom: 24px; padding-bottom: 12px; }
    .archive-year-title { font-size: 22px; }
    .archive-title { font-size: 14px; }
    .archive-date { font-size: 12px; }

    .pagination a, .pagination span { padding: 6px 12px; font-size: 11px; }
    .back-to-top { width: 40px; height: 40px; bottom: 16px; right: 14px; }
    .site-footer { padding: 24px 14px 20px; font-size: 11px; letter-spacing: 0.12em; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
    html { scroll-behavior: auto; }
}