:root {
  --color-bg: #F7F4EF;
  --color-bg-elevated: #FFFFFF;
  --color-bg-soft: #F1ECE4;
  --color-bg-moon: #FCFAF7;
  --color-text: #2C2C2C;
  --color-text-ink: #1F2A2E;
  --color-text-secondary: #6B6B6B;
  --color-text-muted: #9B9B9B;
  --color-border: #E5DED3;
  --color-primary: #B03A2E;
  --color-primary-hover: #8F2E24;
  --color-secondary: #4A6B5D;
  --color-accent: #C9A86A;
  --color-link: #8C3A2B;
  --color-mountain: #5C6B73;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(31,42,46,0.04);
  --shadow-md: 0 8px 24px rgba(31,42,46,0.06);
  --shadow-hover: 0 12px 32px rgba(31,42,46,0.10);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --max-width: 1200px;
  --reading-width: 780px;
}
[data-theme="dark"] {
  --color-bg: #121614;
  --color-bg-elevated: #1C211E;
  --color-bg-soft: #1A1F1C;
  --color-bg-moon: #1C211E;
  --color-text: #E8E4DC;
  --color-text-ink: #E8E4DC;
  --color-text-secondary: #A8A29A;
  --color-text-muted: #6F6A64;
  --color-border: #2A302C;
  --color-primary: #D98C7A;
  --color-primary-hover: #E6A08F;
  --color-secondary: #7FA08F;
  --color-accent: #D4B57A;
  --color-link: #E0A090;
  --color-mountain: #7A8B96;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-serif);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, color 0.3s;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--color-link); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-hover); }
img { max-width: 100%; display: block; }
main { flex: 1; }

/* ===== 顶部导航 ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 64px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 32px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.logo {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-ink);
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.logo-seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  background: var(--color-primary);
  color: #F7F4EF;
  border-radius: 4px;
  font-size: 16px;
  font-weight: 700;
}
.nav-links {
  display: flex;
  gap: 22px;
  list-style: none;
  flex: 1;
}
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 4px 0;
}
.nav-links a:hover, .nav-links a.active { color: var(--color-text-ink); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.search-box {
  display: flex;
  align-items: center;
  background: var(--color-bg-soft);
  border-radius: 999px;
  padding: 0 14px;
  height: 36px;
  width: 200px;
  transition: all 0.2s;
  border: 1px solid transparent;
}
.search-box:focus-within {
  border-color: var(--color-primary);
  background: var(--color-bg-elevated);
}
.search-box input {
  border: none; outline: none; background: transparent;
  flex: 1; font-size: 13px; color: var(--color-text);
  font-family: var(--font-sans);
}
.search-box input::placeholder { color: var(--color-text-muted); }
.search-box svg { width: 16px; height: 16px; color: var(--color-text-muted); flex-shrink: 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px; height: 44px; padding: 0 22px;
  border-radius: var(--radius-sm); font-size: 15px; font-weight: 500;
  cursor: pointer; border: none; transition: all 0.2s;
  font-family: var(--font-serif);
}
.btn-primary { background: var(--color-primary); color: #F7F4EF; }
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--color-primary); border: 1px solid var(--color-primary); }
.btn-ghost:hover { background: rgba(176,58,46,0.06); }
.btn-sm { height: 36px; padding: 0 16px; font-size: 13px; }
.btn-block { width: 100%; }

.icon-btn {
  width: 36px; height: 36px; border-radius: 50%;
  border: none; background: transparent; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--color-text-secondary); transition: all 0.2s;
}
.icon-btn:hover { background: var(--color-bg-soft); color: var(--color-text-ink); }
.icon-btn svg { width: 18px; height: 18px; }
.hamburger { display: none; }

/* ===== 通用 ===== */
.page { padding-top: 64px; }
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 32px;
}
.section-title {
  font-size: 30px; font-weight: 600;
  color: var(--color-text-ink);
  margin-bottom: 8px; letter-spacing: 2px;
}
.section-sub {
  font-size: 15px; color: var(--color-text-muted);
  margin-bottom: 36px; letter-spacing: 1px;
}
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 32px;
}
.section-more { font-size: 14px; color: var(--color-text-muted); }
.section-more:hover { color: var(--color-primary); }

.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 32px 0;
  font-size: 13px; color: var(--color-text-muted);
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { margin: 0 8px; }

/* ===== 卡片 ===== */
.quote-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px 26px 22px;
  transition: all 0.25s;
  cursor: pointer;
}
.quote-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(176,58,46,0.2);
}
.quote-text {
  font-size: 18px; line-height: 1.8; font-weight: 500;
  color: var(--color-text-ink); margin-bottom: 14px; letter-spacing: 1px;
}
.quote-source {
  font-size: 13px; color: var(--color-text-muted); margin-bottom: 12px;
}
.quote-analysis {
  font-size: 14px; line-height: 1.8; color: var(--color-text-secondary);
  margin-bottom: 16px;
  display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}
.quote-tags { display: flex; gap: 6px; flex-wrap: wrap; }

.tag {
  display: inline-block; padding: 4px 12px;
  background: rgba(74,107,93,0.08); color: var(--color-secondary);
  border-radius: 999px; font-size: 12px; cursor: pointer;
  transition: all 0.2s; font-family: var(--font-sans);
}
.tag:hover { background: var(--color-secondary); color: #F7F4EF; }
.tag.hot { background: rgba(201,168,106,0.12); color: #9a7d42; }
[data-theme="dark"] .tag.hot { color: var(--color-accent); }

.grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }

/* ===== Footer ===== */
footer {
  background: var(--color-bg);
  padding: 48px 32px 32px;
  text-align: center;
  border-top: 1px solid var(--color-border);
  margin-top: 64px;
}
.footer-inner { max-width: var(--max-width); margin: 0 auto; }
.footer-logo {
  font-size: 22px; font-weight: 700;
  color: var(--color-text-ink);
  letter-spacing: 3px; margin-bottom: 12px;
}
.footer-slogan {
  font-size: 14px; color: var(--color-text-muted);
  margin-bottom: 24px; letter-spacing: 1px;
}
.footer-links {
  display: flex; gap: 20px; justify-content: center;
  flex-wrap: wrap; margin-bottom: 24px;
}
.footer-links a { font-size: 13px; color: var(--color-text-secondary); }
.footer-friends {
  display: flex; gap: 12px; justify-content: center;
  flex-wrap: wrap; margin-bottom: 20px;
  font-size: 12px; color: var(--color-text-muted);
}
.footer-friends .friends-title { margin-right: 4px; }
.footer-friends a { color: var(--color-text-secondary); text-decoration: none; }
.footer-friends a:hover { color: var(--color-primary); }
.footer-copy {
  font-size: 12px; color: var(--color-text-muted);
  padding-top: 20px; border-top: 1px solid var(--color-border);
}

/* ===== Toast ===== */
#toast {
  position: fixed; bottom: 40px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--color-text-ink); color: var(--color-bg);
  padding: 12px 24px; border-radius: 999px; font-size: 14px;
  opacity: 0; pointer-events: none; transition: all 0.3s;
  z-index: 999; font-family: var(--font-sans);
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===== 表单 ===== */
.form-group { margin-bottom: 24px; }
.form-label {
  display: block; font-size: 14px; color: var(--color-text-secondary);
  margin-bottom: 8px; font-weight: 500;
}
.form-input, .form-textarea, .form-select {
  width: 100%; padding: 12px 16px;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
  font-size: 15px; color: var(--color-text);
  font-family: var(--font-serif); outline: none;
  transition: border-color 0.2s;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--color-primary);
}
.form-textarea { min-height: 120px; resize: vertical; line-height: 1.8; }
.form-hint { font-size: 12px; color: var(--color-text-muted); margin-top: 6px; }

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .nav-links { display: none; }
  .search-box { width: 160px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .nav-inner { padding: 0 16px; gap: 12px; }
  .search-box { display: none; }
  .hamburger { display: inline-flex; }
  .section { padding: 48px 20px; }
  .section-title { font-size: 24px; }
  .grid, .grid-2 { grid-template-columns: 1fr; }
  .breadcrumb { padding: 20px 16px 0; }
  .tag { font-size: 13px; padding: 6px 12px; }
}