*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: Georgia, "Noto Serif SC", "Source Han Serif SC", "思源宋体", serif;
  color: #333;
  background: #fff;
  line-height: 1.8;
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

/* ---- Site Header ---- */
.site-header {
  margin-bottom: 48px;
  padding-bottom: 16px;
  border-bottom: 1px solid #eee;
}

.site-brand {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.site-brand a {
  color: #111;
  text-decoration: none;
  font-weight: bold;
}

/* ---- Navigation ---- */
.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  padding: 0;
  margin: 0;
}

.site-nav li {
  margin: 0;
}

.site-nav a {
  font-size: 0.85rem;
  color: #888;
  text-decoration: none;
  padding: 2px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.site-nav a:hover {
  color: #333;
  border-bottom-color: #ccc;
}

.site-nav a.active {
  color: #111;
  border-bottom-color: #111;
}

/* ---- Main Content ---- */
.site-main {
  min-height: 50vh;
}

/* ---- Page Header ---- */
.page-header {
  margin-bottom: 40px;
}

.page-title {
  font-size: 1.4rem;
  font-weight: normal;
  color: #111;
}

/* ---- Homepage ---- */
.home-intro {
  margin-bottom: 48px;
  font-size: 1.05rem;
  color: #444;
}

.home-intro p {
  margin-bottom: 6px;
}

.home-section {
  margin-bottom: 40px;
}

.section-title {
  font-size: 1.1rem;
  font-weight: normal;
  color: #111;
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid #eee;
}

.section-title a {
  color: inherit;
  text-decoration: none;
}

.section-title a:hover {
  border-bottom: 1px solid #333;
}

.section-more {
  margin-top: 8px;
  font-size: 0.85rem;
}

.section-more a {
  color: #888;
  text-decoration: none;
}

.section-more a:hover {
  color: #333;
}

/* ---- Preview List (homepage) ---- */
.preview-list {
  list-style: none;
}

.preview-list li {
  margin-bottom: 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
}

.preview-list a {
  color: #333;
  text-decoration: none;
  border-bottom: 1px solid #ddd;
}

.preview-list a:hover {
  border-bottom-color: #333;
}

.preview-date {
  font-size: 0.8rem;
  color: #aaa;
}

.preview-desc {
  font-size: 0.85rem;
  color: #999;
  width: 100%;
}

/* ---- Entry List (log, notes listing) ---- */
.month-group {
  margin-bottom: 40px;
}

.month-label {
  font-size: 0.85rem;
  color: #999;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.entry-list {
  list-style: none;
}

.entry-list li {
  margin-bottom: 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
}

.entry-date {
  font-size: 0.8rem;
  color: #aaa;
  min-width: 56px;
  flex-shrink: 0;
}

.entry-type {
  font-size: 0.75rem;
  color: #bbb;
}

.entry-list a {
  color: #333;
  text-decoration: none;
  border-bottom: 1px solid #ddd;
  transition: border-color 0.15s;
}

.entry-list a:hover {
  border-bottom-color: #333;
}

.entry-desc {
  font-size: 0.8rem;
  color: #aaa;
  width: 100%;
  padding-left: 62px;
}

/* ---- Tags ---- */
.tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-left: 8px;
}

.tag {
  font-size: 0.7rem;
  color: #999;
  background: #f5f5f5;
  padding: 1px 8px;
  border-radius: 3px;
}

/* ---- Article ---- */
.article-header {
  margin-bottom: 40px;
}

.article-title {
  font-size: 1.5rem;
  font-weight: normal;
  line-height: 1.4;
  color: #111;
  margin-bottom: 8px;
}

.article-date {
  font-size: 0.85rem;
  color: #999;
}

.article-body {
  font-size: 1rem;
}

.article-body p {
  margin-bottom: 1.4em;
}

.article-body h2 {
  font-size: 1.2rem;
  font-weight: normal;
  color: #111;
  margin: 2em 0 0.6em;
}

.article-body h3 {
  font-size: 1.05rem;
  font-weight: normal;
  color: #111;
  margin: 1.6em 0 0.4em;
}

.article-body blockquote {
  margin: 1.4em 0;
  padding-left: 16px;
  border-left: 3px solid #eee;
  color: #666;
}

.article-body a {
  color: #333;
  border-bottom: 1px solid #bbb;
  text-decoration: none;
}

.article-body a:hover {
  border-bottom-color: #333;
}

.article-body ul,
.article-body ol {
  margin: 1em 0;
  padding-left: 1.5em;
}

.article-body li {
  margin-bottom: 0.4em;
}

.article-body hr {
  border: none;
  border-top: 1px solid #eee;
  margin: 2em 0;
}

.article-body strong {
  color: #111;
}

.article-body code {
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 0.9em;
  background: #f7f7f7;
  padding: 2px 6px;
  border-radius: 3px;
}

.article-body pre {
  background: #f7f7f7;
  padding: 16px 20px;
  overflow-x: auto;
  margin: 1.4em 0;
  border-radius: 4px;
  font-size: 0.85rem;
}

.article-body pre code {
  background: none;
  padding: 0;
}

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

/* ---- Simple Page (about, now, contact) ---- */
.simple-page {
  margin-top: 0;
}

/* ---- Project Cards ---- */
.project-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.project-card {
  padding: 20px;
  border: 1px solid #eee;
  border-radius: 4px;
}

.project-title {
  font-size: 1.1rem;
  font-weight: normal;
  color: #111;
  margin-bottom: 6px;
}

.project-desc {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 10px;
  line-height: 1.6;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
}

.project-status {
  padding: 1px 8px;
  border-radius: 3px;
  font-size: 0.75rem;
}

.status-active {
  background: #e8f5e9;
  color: #2e7d32;
}

.status-done {
  background: #e3f2fd;
  color: #1565c0;
}

.status-plan {
  background: #f5f5f5;
  color: #888;
}

.project-link {
  color: #888;
  text-decoration: none;
  font-size: 0.8rem;
  margin-left: auto;
}

.project-link:hover {
  color: #333;
}

/* ---- Footer ---- */
.site-footer {
  margin-top: 64px;
  padding-top: 20px;
  border-top: 1px solid #eee;
  font-size: 0.8rem;
  color: #bbb;
  text-align: center;
}

/* ---- Back Link ---- */
.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 0.85rem;
  color: #999;
  text-decoration: none;
  border-bottom: 1px solid #ddd;
}

.back-link:hover {
  color: #333;
  border-bottom-color: #333;
}

/* ---- Empty State ---- */
.empty-hint {
  font-size: 0.9rem;
  color: #bbb;
  font-style: italic;
}