/* ============================================================
   顽堂手记 · 日系极简（居中单栏 + 顶部导航）v8
   字体：全无衬线 —— Inter(拉丁/数字) + Noto Sans SC(中文)，真实加载。
   参考 shinya.click 的精致度：分层中性色、中性灰阶文字、accent-soft 体系。
   ============================================================ */

/* ===== Design Tokens ===== */
:root {
    /* 分层背景（微暖和纸） */
    --color-bg: hsl(36 26% 98%);
    --color-bg-1: hsl(36 18% 96%);
    --color-bg-2: hsl(36 14% 92%);
    --color-surface: hsl(36 40% 99.5%);
    --color-border: hsl(36 14% 87%);
    --color-border-soft: hsl(36 12% 91%);

    /* 中性灰阶文字 */
    --color-text: hsl(30 6% 17%);
    --color-text-2: hsl(30 5% 42%);
    --color-text-light: hsl(30 5% 56%);

    /* 强调：沉稳陶土色 */
    --color-accent: hsl(18 34% 46%);
    --color-accent-hover: hsl(18 40% 38%);
    --color-accent-soft: hsl(18 40% 46% / 0.10);
    --color-accent-soft-strong: hsl(18 40% 46% / 0.18);
    --color-selection: hsl(18 40% 46% / 0.16);

    --color-code-bg: hsl(36 16% 94%);
    --color-code-text: hsl(24 22% 28%);
    --header-bg: hsl(36 26% 98% / 0.82);
    --shadow-soft: 0 1px 2px hsl(30 10% 30% / 0.04), 0 10px 30px hsl(30 10% 30% / 0.05);
    --shadow-lift: 0 2px 4px hsl(30 10% 30% / 0.05), 0 14px 32px hsl(30 10% 30% / 0.08);

    /* 中文正文/标题：霞鹜文楷（衍生自日本 FONTWORKS Klee One，日系书卷气）
       自托管子集版，144KB 极速加载。兜底刻意不含 serif/songti，
       避免字体加载期间闪出宋体。 */
    --font-kai: "LXGW WenKai Subset", "LXGW WenKai", "Klee One", "Yuanti SC", var(--font-sans);
    --font-sans: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "PingFang SC", "Microsoft YaHei", "Yu Gothic", sans-serif;
    --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Consolas", "Menlo", monospace;

    --content-max-width: 680px;
    --header-max-width: 1080px;
    --ease: cubic-bezier(0.33, 1, 0.68, 1);
}

/* 暗色（默认）：仅当显式选择亮色时才回到亮色，故无需 JS 亦生效 */
:root:not([data-theme="light"]) {
        --color-bg: hsl(240 8% 7%);
        --color-bg-1: hsl(240 6% 10%);
        --color-bg-2: hsl(240 6% 14%);
        --color-surface: hsl(240 6% 11%);
        --color-border: hsl(240 6% 20%);
        --color-border-soft: hsl(240 6% 16%);

        --color-text: hsl(36 12% 90%);
        --color-text-2: hsl(36 8% 70%);
        --color-text-light: hsl(36 6% 52%);

        --color-accent: hsl(20 45% 66%);
        --color-accent-hover: hsl(20 50% 74%);
        --color-accent-soft: hsl(20 45% 66% / 0.14);
        --color-accent-soft-strong: hsl(20 45% 66% / 0.24);
        --color-selection: hsl(20 45% 66% / 0.22);

        --color-code-bg: hsl(240 6% 15%);
        --color-code-text: hsl(30 18% 84%);
        --header-bg: hsl(240 8% 7% / 0.82);
        --shadow-soft: 0 1px 2px hsl(0 0% 0% / 0.20), 0 10px 30px hsl(0 0% 0% / 0.22);
        --shadow-lift: 0 2px 4px hsl(0 0% 0% / 0.24), 0 14px 32px hsl(0 0% 0% / 0.28);
}
/* 滚动条/表单控件配色同步 */
:root[data-theme="dark"] { color-scheme: dark; }
:root[data-theme="light"] { color-scheme: light; }

/* ===== Reset & Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.95;
    font-size: 15.5px;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
}

::selection { background: var(--color-selection); }

a { color: var(--color-accent); text-decoration: none; transition: color 0.25s var(--ease); }
a:hover { color: var(--color-accent-hover); }

:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: 4px; }
:focus:not(:focus-visible) { outline: none; }

.skip-link {
    position: absolute; left: -9999px; top: 0; z-index: 999;
    padding: 12px 20px; background: var(--color-accent); color: #fff;
    border-radius: 0 0 8px 0; font-size: 14px;
}
.skip-link:focus { left: 0; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 8px; border: 3px solid var(--color-bg); }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-light); }

/* ===== Top Header ===== */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: var(--header-bg);
    -webkit-backdrop-filter: saturate(1.4) blur(14px);
    backdrop-filter: saturate(1.4) blur(14px);
    border-bottom: 1px solid var(--color-border-soft);
}
.site-header.scrolled { box-shadow: var(--shadow-soft); }
.header-inner {
    max-width: var(--header-max-width); margin: 0 auto;
    padding: 0 32px; height: 66px;
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.header-brand { display: flex; align-items: baseline; gap: 12px; min-width: 0; }
.brand-title {
    font-family: var(--font-kai);
    font-size: 20px; font-weight: 500;
    color: var(--color-text); letter-spacing: 0.04em; white-space: nowrap;
}
.brand-sub {
    font-size: 11px; color: var(--color-text-light);
    letter-spacing: 0.08em; white-space: nowrap;
    overflow: hidden; text-overflow: ellipsis;
}

.nav-list { display: flex; align-items: center; gap: 30px; list-style: none; flex-wrap: wrap; }
.nav-link {
    position: relative; display: inline-block; padding: 4px 0;
    font-size: 13px; color: var(--color-text-light);
    letter-spacing: 0.1em; white-space: nowrap; font-weight: 450;
}
.nav-link::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 1.5px;
    background: var(--color-accent); border-radius: 2px;
    transform: scaleX(0); transition: transform 0.35s var(--ease);
}
.nav-link:hover { color: var(--color-text); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--color-accent); }
.nav-link.active::after { transform: scaleX(1); }

/* ===== 明暗切换按钮 ===== */
.theme-toggle {
    flex-shrink: 0;
    width: 34px; height: 34px;
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-light);
    cursor: pointer;
    transition: color 0.25s var(--ease), border-color 0.25s var(--ease),
                background-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.theme-toggle:hover {
    color: var(--color-accent);
    border-color: var(--color-accent-soft-strong);
    background: var(--color-accent-soft);
    transform: rotate(-12deg);
}
.theme-toggle svg {
    width: 16px; height: 16px;
    display: block;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}
/* 默认暗色 → 显示太阳(点击转亮)；亮色态显示月亮 */
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
:root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
:root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }

/* ===== Main（居中单栏） ===== */
.main { max-width: var(--content-max-width); margin: 0 auto; padding: 92px 28px 32px; }
.content-wrapper { max-width: 100%; }

/* ===== Page Header ===== */
.page-header { margin-bottom: 68px; }
.page-title {
    font-family: var(--font-kai);
    font-size: 30px; font-weight: 500;
    letter-spacing: 0; margin-bottom: 14px; text-wrap: balance; line-height: 1.35;
}
.page-desc { font-size: 14px; color: var(--color-text-light); letter-spacing: 0.02em; }

/* ===== Post List ===== */
.post-list { list-style: none; }
.post-item { padding: 38px 0; border-bottom: 1px solid var(--color-border-soft); transition: opacity 0.25s var(--ease); }
.post-item:last-child { border-bottom: none; }
.post-item:hover { opacity: 0.92; }

.post-meta {
    display: flex; align-items: center; gap: 14px;
    margin-bottom: 13px; font-size: 12.5px;
    color: var(--color-text-light); letter-spacing: 0.02em;
}
.post-category {
    display: inline-flex; align-items: center;
    padding: 3px 12px; background: var(--color-accent-soft);
    color: var(--color-accent); border-radius: 999px;
    font-size: 11.5px; letter-spacing: 0.06em; font-weight: 500;
}
.post-title {
    font-family: var(--font-kai);
    font-size: 21px; font-weight: 500;
    line-height: 1.6; margin-bottom: 12px; letter-spacing: 0; text-wrap: pretty;
}
.post-title a { color: inherit; }
.post-title a:hover { color: var(--color-accent); }
.post-excerpt {
    font-family: var(--font-kai); font-size: 14px; color: var(--color-text-2); line-height: 1.9; }

/* ===== Article ===== */
.article { font-family: var(--font-kai); font-size: 16.5px; line-height: 2.15; }
.article-header { margin-bottom: 46px; padding-bottom: 34px; border-bottom: 1px solid var(--color-border-soft); }
.article-title {
    font-family: var(--font-kai);
    font-size: 33px; font-weight: 500;
    line-height: 1.45; margin-bottom: 18px; letter-spacing: 0; text-wrap: balance;
}
.article-meta {
    display: flex; align-items: center; gap: 20px;
    font-size: 12.5px; color: var(--color-text-light); letter-spacing: 0.02em;
}

.article-body h1, .article-body h2, .article-body h3, .article-body h4 {
    font-weight: 700; margin: 50px 0 18px; line-height: 1.5;
    letter-spacing: 0; color: var(--color-text);
}
.article-body h1 { font-size: 26px; }
.article-body h2 { font-size: 21px; padding-bottom: 12px; border-bottom: 1px solid var(--color-border-soft); }
.article-body h3 { font-size: 18.5px; }
.article-body h4 { font-size: 17px; }

.article-body p { margin: 20px 0; line-height: 2.05; }
.article-body ul, .article-body ol { margin: 20px 0; padding-left: 30px; }
.article-body li { margin: 9px 0; }

.article-body blockquote {
    margin: 28px 0; padding: 16px 24px;
    background: var(--color-accent-soft); color: var(--color-text-2);
    border-left: 3px solid var(--color-accent); border-radius: 0 10px 10px 0;
    font-size: 15.5px; line-height: 2;
}
.article-body blockquote p { margin: 8px 0; }

/* 代码块：柔和底色 + 圆角 + 横向滚动（长行不折行） */
.article-body pre {
    margin: 28px 0;
    padding: 20px 22px;
    background: var(--color-code-bg);
    border: 1px solid var(--color-border-soft);
    border-radius: 12px;
    overflow-x: auto;
    font-size: 13.5px;
    line-height: 1.75;
    tab-size: 2;
    -webkit-overflow-scrolling: touch;
}
.article-body pre code {
    padding: 0; background: none;
    color: var(--color-code-text);
    font-family: var(--font-mono);
    font-size: 13.5px; line-height: 1.75;
    white-space: pre;
    word-break: normal;
}
.article-body pre::-webkit-scrollbar { height: 8px; }
.article-body pre::-webkit-scrollbar-track { background: transparent; }
.article-body pre::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 8px; }
.article-body pre::-webkit-scrollbar-thumb:hover { background: var(--color-text-light); }

/* 行内代码：柔和胶囊 */
.article-body code {
    font-family: var(--font-mono); font-size: 0.85em;
    padding: 0.15em 0.45em;
    background: var(--color-accent-soft);
    color: var(--color-accent-hover);
    border-radius: 6px;
    word-break: break-word;
}

/* 代码块内的行内代码不应再带底色 */
.article-body pre code {
    background: none; padding: 0; color: inherit;
}

/* ===== 语法高亮（日系暖调，呼应陶土色强调） ===== */
.article-body pre .k, .article-body pre .kd, .article-body pre .kn,
.article-body pre .kp, .article-body pre .kr, .article-body pre .kt { color: #a0522d; font-weight: 500; }  /* 关键字 */
.article-body pre .s, .article-body pre .s1, .article-body pre .s2,
.article-body pre .sb, .article-body pre .sc, .article-body pre .sd,
.article-body pre .se, .article-body pre .sh, .article-body pre .si,
.article-body pre .sx, .article-body pre .sr, .article-body pre .ss { color: #7a8b5a; }  /* 字符串 */
.article-body pre .m, .article-body pre .mb, .article-body pre .mf,
.article-body pre .mh, .article-body pre .mi, .article-body pre .mo,
.article-body pre .il { color: #b07d3a; }  /* 数字 */
.article-body pre .c, .article-body pre .c1, .article-body pre .cm,
.article-body pre .ch, .article-body pre .cp, .article-body pre .cpf { color: #a8a094; font-style: italic; }  /* 注释 */
.article-body pre .nf, .article-body pre .fm { color: #4a6b8a; font-weight: 500; }  /* 函数 */
.article-body pre .nc, .article-body pre .nn { color: #7d5a8a; }  /* 类/命名空间 */
.article-body pre .nb, .article-body pre .bp { color: #8a6a4a; }  /* 内建 */
.article-body pre .na, .article-body pre .nv, .article-body pre .nt { color: #4a6b8a; }  /* 属性/标签 */
.article-body pre .o, .article-body pre .ow { color: #8a8074; }  /* 运算符 */
.article-body pre .p { color: #8a8074; }  /* 标点 */
.article-body pre .err { color: #b0483a; }  /* 错误 */

/* 暗色模式下的高亮（默认暗色即生效） */
:root:not([data-theme="light"]) {
    .article-body pre .k, .article-body pre .kd, .article-body pre .kn,
    .article-body pre .kp, .article-body pre .kr, .article-body pre .kt { color: #e0956b; }
    .article-body pre .s, .article-body pre .s1, .article-body pre .s2,
    .article-body pre .sb, .article-body pre .sc, .article-body pre .sd,
    .article-body pre .se, .article-body pre .sh, .article-body pre .si,
    .article-body pre .sx, .article-body pre .sr, .article-body pre .ss { color: #b3c08a; }
    .article-body pre .m, .article-body pre .mb, .article-body pre .mf,
    .article-body pre .mh, .article-body pre .mi, .article-body pre .mo,
    .article-body pre .il { color: #d4a76a; }
    .article-body pre .c, .article-body pre .c1, .article-body pre .cm,
    .article-body pre .ch, .article-body pre .cp, .article-body pre .cpf { color: #6f6a62; }
    .article-body pre .nf, .article-body pre .fm { color: #7fa8cc; }
    .article-body pre .nc, .article-body pre .nn { color: #b594c4; }
    .article-body pre .nb, .article-body pre .bp { color: #c9a97e; }
    .article-body pre .na, .article-body pre .nv, .article-body pre .nt { color: #7fa8cc; }
}

.article-body hr { margin: 50px 0; border: none; border-top: 1px solid var(--color-border-soft); }

.article-body a {
    color: var(--color-accent);
    border-bottom: 1px solid var(--color-accent-soft-strong); padding-bottom: 1px;
    transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.article-body a:hover { color: var(--color-accent-hover); border-bottom-color: var(--color-accent); }

.article-body img {
    max-width: 100%; height: auto; display: block;
    margin: 30px auto; border-radius: 12px; box-shadow: var(--shadow-soft);
}

.article-body table {
    width: 100%; margin: 32px 0; border-collapse: collapse;
    font-size: 14px;
}
.article-body th, .article-body td { padding: 12px 16px; border-bottom: 1px solid var(--color-border-soft); text-align: left; }
.article-body th { background: var(--color-bg-1); font-weight: 600; }

/* ===== About / Profile ===== */
.profile-section { text-align: center; padding: 20px 0 8px; }
.profile-section .profile-avatar { margin: 0 auto 40px; }
.profile-avatar {
    width: 136px; height: 136px; border-radius: 50%;
    display: block; object-fit: cover;
    border: 1px solid var(--color-border); box-shadow: var(--shadow-soft);
}
.profile-name { font-family: var(--font-kai); font-size: 26px; font-weight: 500; letter-spacing: 0.04em; margin-bottom: 14px; }
.profile-bio {
    font-family: var(--font-kai); font-size: 15px; color: var(--color-text-2); margin-bottom: 40px; line-height: 2; }
.profile-section-title {
    font-family: var(--font-kai);
    font-size: 19px; font-weight: 500;
    margin: 44px 0 18px; padding-bottom: 10px; border-bottom: 1px solid var(--color-border-soft);
}
.profile-content {
    font-family: var(--font-kai); font-size: 15px; line-height: 2.05; }
.profile-content p { margin: 16px 0; }

/* ===== Projects ===== */
.project-grid {
    --masonry-cols: 2;
    --masonry-gap: 22px;
    display: grid;
    grid-template-columns: repeat(var(--masonry-cols), 1fr);
    gap: var(--masonry-gap);
}
.project-grid .masonry-col {
    display: flex;
    flex-direction: column;
    gap: var(--masonry-gap);
    min-width: 0;
}
.project-card {
    padding: 30px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-soft);
    border-radius: 16px;
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}
.project-card:hover { transform: translateY(-3px); border-color: var(--color-accent-soft-strong); box-shadow: var(--shadow-lift); }
.project-title { font-family: var(--font-kai); font-size: 18.5px; font-weight: 500; margin-bottom: 12px; letter-spacing: 0; }
.project-desc {
    font-family: var(--font-kai); font-size: 14px; color: var(--color-text-2); line-height: 1.9; margin-bottom: 18px; }
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.project-tag {
    display: inline-flex; align-items: center;
    padding: 4px 12px; font-size: 11.5px; font-weight: 500;
    background: var(--color-bg-2); color: var(--color-text-2);
    border-radius: 999px; letter-spacing: 0.03em;
    transition: background-color 0.25s var(--ease), color 0.25s var(--ease);
}
.project-tag:hover { background: var(--color-accent-soft); color: var(--color-accent); }

/* ===== Daily Cards ===== */
/* 日常卡片：真瀑布流。
   JS 把卡片按源顺序（时间顺序）分配到当前最矮的列，
   紧密贴合、无空洞，且底部自然过渡；未启用 JS 时退化为普通网格。 */
.daily-grid {
    --masonry-cols: 2;
    --masonry-gap: 24px;
    display: grid;
    grid-template-columns: repeat(var(--masonry-cols), 1fr);
    gap: var(--masonry-gap);
}
.daily-grid .masonry-col {
    display: flex;
    flex-direction: column;
    gap: var(--masonry-gap);
    min-width: 0;
}
.daily-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-soft);
    border-radius: 16px;
    padding: 28px;
    transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.daily-card:hover { border-color: var(--color-accent-soft-strong); box-shadow: var(--shadow-soft); }
.daily-card-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--color-border-soft);
}
.daily-date { font-size: 12px; color: var(--color-text-light); letter-spacing: 0.02em; font-family: var(--font-mono); }
.daily-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.daily-tag {
    font-size: 11px; font-weight: 500; color: var(--color-accent);
    background: var(--color-accent-soft); padding: 3px 10px;
    border-radius: 999px; letter-spacing: 0.03em;
}
.daily-card-body { font-family: var(--font-kai); font-size: 15.5px; line-height: 2.1; }
.daily-card-body p { margin: 14px 0; }
.daily-card-body p:first-child { margin-top: 0; }
.daily-card-body p:last-child { margin-bottom: 0; }
.daily-card-body blockquote {
    margin: 16px 0; padding: 14px 18px;
    background: var(--color-accent-soft); color: var(--color-text-2);
    border-left: 3px solid var(--color-accent); border-radius: 0 10px 10px 0;
    font-size: 14.5px; line-height: 1.9;
}

/* ===== Friends ===== */
/* 友链：卡片高度相近，普通网格即可。
   用 2 列而非 3 列——卡片太窄会把描述挤成细长的一列，很难看。
   只有一位友链时让其占满整行，避免孤零零挂在半栏里。 */
.friend-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.friend-grid:has(> .friend-card:only-child) {
    grid-template-columns: 1fr;
}
.friend-card {
    display: flex; align-items: flex-start; gap: 15px;
    padding: 22px 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-soft);
    border-radius: 14px;
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
    text-decoration: none;
}
.friend-card:hover { transform: translateY(-3px); border-color: var(--color-accent-soft-strong); box-shadow: var(--shadow-lift); }
.friend-avatar {
    width: 42px; height: 42px; border-radius: 12px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 600; color: var(--color-accent);
    background: var(--color-accent-soft);
    transition: background-color 0.3s var(--ease);
}
.friend-avatar.loaded { background-size: cover; background-position: center; font-size: 0; color: transparent; }
.friend-info { flex: 1; min-width: 0; }
.friend-name {
    font-family: var(--font-kai); font-size: 16px; font-weight: 500; margin-bottom: 5px; color: var(--color-text); }
.friend-desc {
    font-family: var(--font-kai); font-size: 13px; color: var(--color-text-light); line-height: 1.7; }

/* ===== Pagination ===== */
.pagination { display: flex; justify-content: center; gap: 10px; margin: 64px 0 24px; }
.pagination-item {
    padding: 9px 18px; border: 1px solid var(--color-border-soft);
    border-radius: 8px; font-size: 14px; color: var(--color-text);
    transition: all 0.25s var(--ease);
}
.pagination-item:hover, .pagination-item.active { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }

/* ===== Empty State ===== */
.empty-state { text-align: center; padding: 110px 20px; color: var(--color-text-light); }
.empty-state-icon { font-size: 44px; margin-bottom: 18px; opacity: 0.45; }
.empty-state-text {
    font-family: var(--font-kai); font-size: 15px; }

/* ===== Footer ===== */
.site-footer {
    max-width: var(--content-max-width); margin: 0 auto;
    padding: 36px 28px 56px;
    border-top: 1px solid var(--color-border-soft);
    text-align: center;
}
.copyright { font-size: 11.5px; color: var(--color-text-light); letter-spacing: 0.04em; line-height: 1.8; }

/* ===== Responsive: 平板 ===== */
@media (max-width: 900px) {
    .header-inner { padding: 0 24px; }
    .brand-sub { display: none; }
    .friend-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== Responsive: 手机 ===== */
@media (max-width: 768px) {
    .header-inner {
        height: auto; min-height: 60px;
        flex-direction: column; align-items: flex-start;
        gap: 8px; padding: 14px 20px;
    }
    .nav-list { gap: 22px; }
    .main { padding: 64px 20px 24px; }
    .page-header { margin-bottom: 48px; }
    .page-title { font-size: 25px; }
    .post-item { padding: 30px 0; }
    .post-title { font-size: 19px; }
    .article-header { margin-bottom: 34px; padding-bottom: 26px; }
    .article-title { font-size: 26px; }
    .article { font-size: 16px; }
    .article-body h1 { font-size: 23px; }
    .article-body h2 { font-size: 19.5px; }
    .article-body h3 { font-size: 18px; }
    .article-body pre { padding: 16px 18px; }
    .project-grid, .daily-grid, .friend-grid { grid-template-columns: 1fr; }
    .daily-grid, .project-grid { --masonry-cols: 1; }
    .profile-avatar { width: 118px; height: 118px; }
    .site-footer { padding: 30px 20px 44px; }
}

/* ===== 小屏手机 ===== */
@media (max-width: 480px) {
    .nav-list { gap: 18px; }
    .nav-link { font-size: 12.5px; letter-spacing: 0.06em; }
    .main { padding: 52px 18px 20px; }
    .page-title { font-size: 23px; }
    .post-title { font-size: 18px; }
    .article-title { font-size: 23px; }
}

/* ===== 减弱动效 ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
    html { scroll-behavior: auto !important; }
}

/* ===== 打印 ===== */
@media print {
    .site-header, .site-footer, .skip-link { display: none !important; }
    .main { padding: 0; max-width: none; }
    body { background: #fff; color: #000; }
}