:root {
  /* Claude 风配色 */
  --bg: #faf9f5;
  --bg-soft: #f0eee6;
  --card: #ffffff;
  --text: #1a1a18;
  --text-light: #6b6b66;
  --accent: #cc785c;
  --accent-hover: #b8674d;
  --accent-soft: #f3e7e0;
  --border: #e7e4db;
  --code-bg: #2a2622;
  --code-text: #e8e4dc;
  --max-width: 820px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", sans-serif;
  line-height: 1.7;
  min-height: 100vh;
}

h1, h2, h3 {
  font-family: Georgia, "Times New Roman", "Songti SC", "宋体", serif;
  font-weight: 600;
  line-height: 1.3;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-hover);
}

/* ── 导航 ── */
nav {
  border-bottom: 1px solid var(--border);
  padding: 1.1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(250, 249, 245, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-logo {
  font-family: Georgia, serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 1.8rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-light);
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
}

/* ── 主内容区 ── */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3.5rem 1.5rem 5rem;
}

/* ── Hero ── */
.hero {
  padding: 3rem 0 2.5rem;
}

.hero .greeting {
  color: var(--accent);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.8rem;
}

.hero h1 {
  font-size: 3rem;
  letter-spacing: -0.01em;
  margin-bottom: 1.2rem;
  color: var(--text);
}

.hero .tagline {
  color: var(--text-light);
  font-size: 1.15rem;
  max-width: 620px;
  line-height: 1.7;
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── 区块标题 ── */
.section-title {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

section {
  padding: 2.5rem 0;
}

.divider {
  height: 1px;
  background: var(--border);
  border: none;
  margin: 1rem 0;
}

/* ── 关于 ── */
.about-text {
  color: var(--text-light);
  font-size: 1.05rem;
  line-height: 1.9;
}

.about-text strong {
  color: var(--text);
  font-weight: 600;
}

/* ── 技能标签 ── */
.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.skill-tag {
  background: var(--accent-soft);
  color: var(--accent-hover);
  padding: 0.4rem 0.9rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
}

/* ── 项目卡片 ── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.2rem;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.6rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.project-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.project-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
  color: var(--text);
}

.project-card p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.project-tags span {
  font-size: 0.78rem;
  color: var(--text-light);
  background: var(--bg-soft);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-family: "SFMono-Regular", Consolas, monospace;
}

.project-links {
  display: flex;
  gap: 1.2rem;
  font-size: 0.88rem;
}

/* ── 博客列表 ── */
.post-list {
  display: flex;
  flex-direction: column;
}

.post-card {
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--border);
}

.post-card:first-child {
  border-top: 1px solid var(--border);
}

.post-card .meta {
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 0.5rem;
  font-family: "SFMono-Regular", Consolas, monospace;
}

.post-card h2 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.post-card h2 a {
  color: var(--text);
}

.post-card h2 a:hover {
  color: var(--accent);
}

.post-card .excerpt {
  color: var(--text-light);
  font-size: 0.97rem;
  line-height: 1.7;
}

.read-more {
  display: inline-block;
  margin-top: 0.8rem;
  font-size: 0.88rem;
  color: var(--accent);
  font-weight: 500;
}

/* ── 文章详情 ── */
.post-header {
  margin-bottom: 2.5rem;
}

.post-header h1 {
  font-size: 2.2rem;
  margin-bottom: 0.8rem;
}

.post-header .meta {
  font-size: 0.85rem;
  color: var(--text-light);
  font-family: "SFMono-Regular", Consolas, monospace;
}

.post-body {
  font-size: 1.05rem;
  line-height: 1.9;
}

.post-body p {
  margin-bottom: 1.4rem;
}

.post-body h2 {
  font-size: 1.4rem;
  margin: 2.5rem 0 1rem;
  color: var(--text);
}

.post-body ul, .post-body ol {
  margin: 0 0 1.4rem 1.5rem;
  color: var(--text-light);
}

.post-body li {
  margin-bottom: 0.5rem;
}

.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.5rem 1.5rem;
  margin: 1.5rem 0;
  color: var(--text-light);
  font-style: italic;
}

/* 行内代码 */
.post-body code {
  background: var(--bg-soft);
  color: var(--accent-hover);
  padding: 0.15rem 0.45rem;
  border-radius: 5px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.9em;
}

/* 代码块 */
.post-body pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1.2rem 1.4rem;
  border-radius: 12px;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  line-height: 1.6;
}

.post-body pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
}

/* ── 页脚 ── */
footer {
  text-align: center;
  padding: 2.5rem 1.5rem;
  color: var(--text-light);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

footer a {
  margin: 0 0.6rem;
}

/* ── 响应式 ── */
@media (max-width: 600px) {
  nav { padding: 1rem 1.2rem; }
  .nav-links { gap: 1.2rem; }
  .hero h1 { font-size: 2.2rem; }
  main { padding: 2.5rem 1.2rem 4rem; }
  .project-grid { grid-template-columns: 1fr; }
}