/* =========================================================================
   主题：default
   偏编辑感的克制排版。衬线标题 + 系统无衬线正文，发丝线分隔，无阴影。
   ========================================================================= */

:root {
  --wrap: 42rem;

  --bg:        #faf9f7;
  --bg-soft:   #f1efea;
  --bg-sink:   #e9e6df;
  --fg:        #1b1a18;
  --fg-mid:    #55524c;
  --fg-mute:   #857f76;
  --fg-faint:  #a9a29a;
  --line:      #e2ded6;
  --line-soft: #ece9e2;
  --accent:    #a4553a;
  --accent-bg: #f6e9e3;

  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia,
                "Songti SC", STSong, "Source Han Serif SC", "Noto Serif CJK SC", serif;
  --font-sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  --font-mono:  ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
                "Liberation Mono", monospace;

  --step: 0.18s cubic-bezier(.4, 0, .2, 1);
}

html.dark {
  --bg:        #171614;
  --bg-soft:   #201f1c;
  --bg-sink:   #292723;
  --fg:        #e9e6e0;
  --fg-mid:    #b6b1a8;
  --fg-mute:   #918b81;
  --fg-faint:  #6d675e;
  --line:      #2e2b26;
  --line-soft: #262420;
  --accent:    #d39072;
  --accent-bg: #2c231e;
}

/* --------------------------------------------------------------- 基础 */

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16.5px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

img { max-width: 100%; height: auto; }

code, pre, kbd { font-family: var(--font-mono); }

::selection { background: var(--accent-bg); color: var(--fg); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  background: var(--bg);
  border: 1px solid var(--line);
  padding: .5rem .9rem;
  border-radius: 6px;
}

/* --------------------------------------------------------------- 头部 */

.site-head {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.head-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 1.6rem;
  padding-bottom: 1.5rem;
}

.brand { display: block; min-width: 0; }

.brand-name {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.32rem;
  letter-spacing: .01em;
  line-height: 1.3;
  transition: color var(--step);
}
.brand:hover .brand-name { color: var(--accent); }

.brand-desc {
  display: block;
  margin-top: .15rem;
  font-size: .78rem;
  color: var(--fg-mute);
  letter-spacing: .02em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  flex-shrink: 0;
}

.nav-link {
  font-size: .875rem;
  color: var(--fg-mid);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color var(--step), border-color var(--step);
}
.nav-link:hover { color: var(--fg); }
.nav-link.is-active {
  color: var(--fg);
  border-bottom-color: var(--accent);
}

.theme-btn {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--fg-mute);
  cursor: pointer;
  transition: color var(--step), border-color var(--step);
}
.theme-btn:hover { color: var(--accent); border-color: var(--accent); }
.theme-btn svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  grid-area: 1 / 1;
}
.icon-moon { display: none; }
html.dark .icon-sun { display: none; }
html.dark .icon-moon { display: block; }

/* --------------------------------------------------------------- 主体 */

.site-main {
  flex: 1 0 auto;
  padding: 3.2rem 0 4.5rem;
}

.intro {
  margin: 0 0 3rem;
  padding-bottom: 1.9rem;
  border-bottom: 1px solid var(--line-soft);
  font-size: 1.02rem;
  color: var(--fg-mid);
}
.intro p { margin: 0 0 .6rem; }
.intro p:last-child { margin-bottom: 0; }

.page-head { margin-bottom: 2.4rem; }

.page-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 500;
  letter-spacing: .01em;
  line-height: 1.3;
}

.page-sub {
  margin: .5rem 0 0;
  font-size: .82rem;
  color: var(--fg-mute);
  letter-spacing: .03em;
}

.page-lede {
  margin: 0 0 3rem;
  padding-bottom: 1.9rem;
  border-bottom: 1px solid var(--line-soft);
  color: var(--fg-mid);
}

/* --------------------------------------------------------- 文章列表 */

.entries {
  list-style: none;
  margin: 0;
  padding: 0;
}

.entry {
  padding: 2.1rem 0;
  border-bottom: 1px solid var(--line-soft);
}
.entry:first-child { padding-top: 0; }
.entry:last-child { border-bottom: 0; }

.entry-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.34rem;
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: .005em;
}
.entry-title a {
  transition: color var(--step);
  text-underline-offset: 4px;
}
.entry-title a:hover {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

.entry-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
  margin-top: .5rem;
  font-size: .76rem;
  color: var(--fg-faint);
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.entry-excerpt {
  margin: .75rem 0 0;
  color: var(--fg-mid);
  font-size: .94rem;
  line-height: 1.75;
}

.entry.is-pinned .entry-title { position: relative; }

.badge {
  font-family: var(--font-sans);
  font-size: .68rem;
  color: var(--accent);
  background: var(--accent-bg);
  padding: .08rem .38rem;
  border-radius: 3px;
  letter-spacing: .04em;
}

.tag {
  font-family: var(--font-sans);
  font-size: .76rem;
  color: var(--fg-mute);
  transition: color var(--step);
}
.tag::before { content: "#"; opacity: .55; }
.tag:hover { color: var(--accent); }

.tag-lg {
  display: inline-flex;
  align-items: baseline;
  gap: .3rem;
  font-size: .84rem;
  padding: .3rem .65rem;
  border: 1px solid var(--line);
  border-radius: 20px;
  transition: color var(--step), border-color var(--step);
}
.tag-lg:hover { border-color: var(--accent); }
.tag-n {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--fg-faint);
}

/* ------------------------------------------------------------- 翻页 */

.pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  font-size: .86rem;
}
.pager-link { color: var(--fg-mid); transition: color var(--step); }
.pager-link:hover { color: var(--accent); }
.pager-link.is-off { color: var(--fg-faint); opacity: .5; }
.pager-at {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--fg-faint);
}

/* ------------------------------------------------------------- 文章页 */

.post-head {
  margin-bottom: 2.6rem;
  padding-bottom: 1.7rem;
  border-bottom: 1px solid var(--line);
}

.post-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 2.05rem;
  font-weight: 500;
  line-height: 1.32;
  letter-spacing: .005em;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  margin-top: .8rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--fg-faint);
  letter-spacing: .02em;
}
.post-meta .dot { opacity: .45; }

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: .7rem;
}

/* ---------------------------------------------------- Markdown 正文 */

.prose { font-size: 1.02rem; }

.prose > *:first-child { margin-top: 0; }
.prose > *:last-child { margin-bottom: 0; }

.prose p { margin: 0 0 1.35rem; }

.prose h2, .prose h3, .prose h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: .005em;
}
.prose h2 {
  margin: 2.8rem 0 1rem;
  font-size: 1.42rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--line-soft);
}
.prose h3 { margin: 2.2rem 0 .8rem; font-size: 1.18rem; }
.prose h4 { margin: 1.8rem 0 .7rem; font-size: 1.04rem; color: var(--fg-mid); }

.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent);
  transition: text-decoration-color var(--step);
}
.prose a:hover { text-decoration-color: var(--accent); }

.prose strong { font-weight: 600; }

.prose ul, .prose ol {
  margin: 0 0 1.35rem;
  padding-left: 1.4rem;
}
.prose li { margin-bottom: .4rem; }
.prose li > ul, .prose li > ol { margin: .4rem 0 .2rem; }
.prose ul li::marker { color: var(--fg-faint); }
.prose ol li::marker { color: var(--fg-faint); font-family: var(--font-mono); font-size: .85em; }

.prose blockquote {
  margin: 1.7rem 0;
  padding: .2rem 0 .2rem 1.2rem;
  border-left: 2px solid var(--accent);
  color: var(--fg-mid);
}
.prose blockquote p:last-child { margin-bottom: 0; }

.prose code {
  font-size: .875em;
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  padding: .1em .35em;
  border-radius: 4px;
  word-break: break-word;
}

.prose pre {
  margin: 1.7rem 0;
  padding: 1.05rem 1.15rem;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow-x: auto;
  font-size: .84rem;
  line-height: 1.7;
}
.prose pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: inherit;
  white-space: pre;
}

.prose hr {
  margin: 2.6rem 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.prose img {
  display: block;
  margin: 1.8rem auto;
  border-radius: 8px;
  border: 1px solid var(--line-soft);
}

.prose table {
  width: 100%;
  margin: 1.7rem 0;
  border-collapse: collapse;
  font-size: .9rem;
}
.prose th, .prose td {
  padding: .55rem .7rem;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
}
.prose th {
  font-weight: 600;
  color: var(--fg-mid);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.prose kbd {
  font-size: .8em;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: .05em .4em;
}

/* --------------------------------------------------------- 上下篇 */

.post-foot {
  margin-top: 3.4rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--line);
}

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.post-nav-item {
  display: block;
  min-width: 0;
  transition: color var(--step);
}
.post-nav-item.is-next { text-align: right; }
.post-nav-item:hover { color: var(--accent); }

.post-nav-label {
  display: block;
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--fg-faint);
  letter-spacing: .05em;
  margin-bottom: .2rem;
}

.post-nav-title {
  display: block;
  font-size: .92rem;
  line-height: 1.5;
  color: var(--fg-mid);
  transition: color var(--step);
}
.post-nav-item:hover .post-nav-title { color: var(--accent); }

.post-back {
  margin: 2rem 0 0;
  font-size: .86rem;
  color: var(--fg-mute);
}
.post-back a { transition: color var(--step); }
.post-back a:hover { color: var(--accent); }

/* ----------------------------------------------------------- 归档 */

.year { margin-bottom: 2.6rem; }

.year-title {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  margin: 0 0 .9rem;
  padding-bottom: .45rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--fg-mid);
}
.year-count {
  font-size: .72rem;
  color: var(--fg-faint);
}

.rows { list-style: none; margin: 0; padding: 0; }

.row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: .42rem 0;
}

.row-date {
  flex: 0 0 3.1rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--fg-faint);
  letter-spacing: .02em;
}

.row-title {
  min-width: 0;
  font-size: .97rem;
  line-height: 1.6;
  transition: color var(--step);
  text-underline-offset: 3px;
}
.row-title:hover {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

.group-title {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  margin: 0 0 .5rem;
  font-family: var(--font-sans);
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--fg-mute);
}
.group-count {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 400;
  color: var(--fg-faint);
  letter-spacing: 0;
}

.group-note {
  margin: 0 0 1.1rem;
  font-size: .86rem;
  color: var(--fg-mute);
}

.tagcloud {
  margin-top: 3.2rem;
  padding-top: 1.9rem;
  border-top: 1px solid var(--line);
}
.tagcloud-list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: .9rem;
}

/* ----------------------------------------------------------- 友链 */

.view-links { --wrap: 52rem; }

.link-group { margin-bottom: 2.9rem; }

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: .7rem;
}

.link-card {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .8rem .9rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  min-width: 0;
  transition: border-color var(--step), transform var(--step), background var(--step);
}
.link-card:hover {
  border-color: var(--accent);
  background: var(--bg-soft);
  transform: translateY(-2px);
}

.link-avatar {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg-sink);
  border: 1px solid var(--line-soft);
}

.link-body { min-width: 0; }

.link-name {
  display: block;
  font-size: .95rem;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color var(--step);
}
.link-card:hover .link-name { color: var(--accent); }

.link-desc {
  display: block;
  margin-top: .1rem;
  font-size: .79rem;
  line-height: 1.5;
  color: var(--fg-mute);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 交换友链 */

.apply {
  margin-top: 3.4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.apply-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.2rem;
  padding: 1.1rem 1.2rem;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.apply-info {
  margin: 0;
  font-size: .84rem;
  line-height: 1.85;
  color: var(--fg-mid);
  white-space: pre-wrap;
  word-break: break-all;
  min-width: 0;
}

.apply-contact {
  margin: 1.1rem 0 0;
  font-size: .86rem;
  color: var(--fg-mute);
}

.btn {
  flex-shrink: 0;
  font-family: var(--font-sans);
  font-size: .8rem;
  color: var(--fg-mid);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .35rem .8rem;
  cursor: pointer;
  transition: color var(--step), border-color var(--step);
}
.btn:hover { color: var(--accent); border-color: var(--accent); }
.btn.is-done { color: var(--accent); border-color: var(--accent); }

/* ------------------------------------------------------- 空状态 / 404 */

.empty {
  padding: 3rem 0;
  text-align: center;
  color: var(--fg-mute);
}
.empty p { margin: 0 0 .5rem; }
.empty-hint { font-size: .86rem; color: var(--fg-faint); }
.empty code, .empty-hint code {
  font-size: .85em;
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  padding: .1em .35em;
  border-radius: 4px;
}

.notfound {
  padding: 4rem 0 5rem;
  text-align: center;
}
.notfound-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .3em;
  color: var(--fg-faint);
}
.notfound-title {
  margin: .8rem 0 .5rem;
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 500;
}
.notfound-hint { margin: 0; color: var(--fg-mute); font-size: .92rem; }
.notfound-links {
  display: flex;
  justify-content: center;
  gap: 1.4rem;
  margin-top: 2rem;
  font-size: .88rem;
}
.notfound-links a { color: var(--fg-mid); transition: color var(--step); }
.notfound-links a:hover { color: var(--accent); }

/* ----------------------------------------------------------- 页脚 */

.site-foot {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.2rem;
  font-size: .8rem;
  color: var(--fg-mute);
}

.foot-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .6rem 1.2rem;
}

.foot-left { display: flex; flex-wrap: wrap; gap: .8rem; }
.foot-note { color: var(--fg-faint); }

.foot-right { display: flex; gap: 1.1rem; }
.foot-right a { transition: color var(--step); }
.foot-right a:hover { color: var(--accent); }

/* --------------------------------------------------------- 窄屏 */

@media (max-width: 42rem) {
  body { font-size: 16px; }

  .head-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: .9rem;
    padding-top: 1.3rem;
    padding-bottom: 1.2rem;
  }
  .nav { gap: .95rem; }
  .brand-desc { white-space: normal; }

  .site-main { padding: 2.4rem 0 3.4rem; }

  .post-title { font-size: 1.66rem; }
  .page-title { font-size: 1.55rem; }
  .entry-title { font-size: 1.22rem; }
  .prose { font-size: 1rem; }
  .prose h2 { font-size: 1.3rem; margin-top: 2.3rem; }

  .post-nav { grid-template-columns: 1fr; gap: 1.4rem; }
  .post-nav-item.is-next { text-align: left; }

  .link-grid { grid-template-columns: 1fr; }

  .apply-card { flex-direction: column; }
  .btn { align-self: flex-start; }

  .foot-inner { flex-direction: column; align-items: flex-start; }
}

/* --------------------------------------------------------- 打印 */

@media print {
  .site-head, .site-foot, .post-nav, .post-back, .theme-btn { display: none; }
  body { font-size: 11pt; background: #fff; color: #000; }
  .wrap { max-width: none; padding: 0; }
  .prose a { text-decoration: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}