:root {
  --bg: #faf6f1;
  --bg-soft: #f3ebe3;
  --card: #fffdf9;
  --ink: #3d3229;
  --ink-soft: #6b5a4c;
  --muted: #9a8776;
  --accent: #c4785a;
  --accent-soft: #e8b4a0;
  --line: #e8ddd2;
  --shadow: 0 10px 30px rgba(61, 50, 41, 0.06);
  --radius: 18px;
  --font: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei",
    "Source Han Sans SC", sans-serif;
  --serif: "Songti SC", "Noto Serif SC", "STSong", "SimSun", serif;
  --max: 720px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #f8e7dc 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #efe4d8 0%, transparent 50%),
    var(--bg);
  line-height: 1.85;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(100% - 2rem, 1100px); margin: 0 auto; }
.site-header {
  padding: 1.25rem 0 0.5rem;
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(250, 246, 241, 0.85);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled { border-bottom-color: var(--line); }
.nav {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.brand {
  display: flex; align-items: center; gap: 0.7rem; color: inherit; text-decoration: none;
}
.brand:hover { text-decoration: none; }
.logo {
  width: 40px; height: 40px; border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(196, 120, 90, 0.22);
  background: #f7ebe3;
  display: block;
}
.logo img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.brand-text strong { display: block; font-size: 1.05rem; letter-spacing: 0.04em; }
.brand-text span { font-size: 0.78rem; color: var(--muted); }
.nav-links { display: flex; gap: 1rem; font-size: 0.92rem; color: var(--ink-soft); flex-wrap: wrap; }
.hero { padding: 3.2rem 0 1.8rem; text-align: center; }
.hero .eyebrow {
  display: inline-block;
  padding: 0.25rem 0.8rem;
  border-radius: 999px;
  background: #f3e0d6;
  color: var(--accent);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  line-height: 1.35;
  margin: 0 0 1rem;
  letter-spacing: 0.06em;
}
.hero p {
  max-width: 36em;
  margin: 0 auto 1.5rem;
  color: var(--ink-soft);
  font-size: 1.02rem;
}
.hero-meta {
  display: flex; justify-content: center; gap: 1.5rem; flex-wrap: wrap;
  color: var(--muted); font-size: 0.9rem;
}
.toolbar {
  display: flex; flex-direction: column; gap: 1rem;
  margin: 0 auto 1.5rem;
  max-width: 820px;
}
.search-wrap { position: relative; }
.search-wrap input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  font-size: 1rem;
  font-family: inherit;
  color: var(--ink);
  outline: none;
  box-shadow: var(--shadow);
}
.search-wrap input:focus {
  border-color: var(--accent-soft);
  box-shadow: 0 0 0 3px rgba(196, 120, 90, 0.15);
}
.search-wrap .icon {
  position: absolute; left: 1rem; top: 50%; transform: translateY(-50%);
  color: var(--muted); pointer-events: none; font-size: 1rem;
}
.chips {
  display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center;
}
.chip {
  appearance: none; border: 1px solid var(--line);
  background: var(--card); color: var(--ink-soft);
  padding: 0.4rem 0.9rem; border-radius: 999px;
  font-size: 0.88rem; font-family: inherit; cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.chip:hover { border-color: var(--accent-soft); color: var(--accent); }
.chip.active {
  background: var(--ink); color: #fff8f3; border-color: var(--ink);
}
.chip .count { opacity: 0.7; margin-left: 0.25rem; font-size: 0.8em; }
.result-meta {
  text-align: center; color: var(--muted); font-size: 0.9rem; min-height: 1.4em;
  margin-bottom: 0.8rem;
}
.section-title {
  font-family: var(--serif);
  font-size: 1.35rem;
  margin: 1.5rem 0 1rem;
  letter-spacing: 0.08em;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.1rem;
  padding-bottom: 2rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.3rem 1.35rem;
  box-shadow: var(--shadow);
  transition: transform .2s ease, box-shadow .2s ease;
  display: flex; flex-direction: column; gap: 0.55rem;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(61, 50, 41, 0.09);
}
.card.is-hidden { display: none; }
.card .num {
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  display: flex; justify-content: space-between; align-items: center; gap: 0.5rem;
}
.card .cat-tag, .cat-pill {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: #f3e0d6;
  color: #8a5a45;
  text-decoration: none;
}
.cat-pill:hover { text-decoration: none; filter: brightness(0.97); }
.card h2 {
  font-family: var(--serif);
  font-size: 1.2rem;
  margin: 0;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.card h2 a { color: inherit; }
.card h2 a:hover { color: var(--accent); text-decoration: none; }
.card .teaser {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0;
  flex: 1;
}
.card .more {
  font-size: 0.88rem;
  color: var(--accent);
  margin-top: 0.3rem;
}
.empty-state {
  display: none;
  text-align: center;
  padding: 3rem 1rem 4rem;
  color: var(--ink-soft);
  background: var(--card);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  margin-bottom: 2rem;
}
.empty-state.show { display: block; }
.empty-state strong { display: block; font-family: var(--serif); font-size: 1.2rem; margin-bottom: 0.5rem; color: var(--ink); }

.about-logo {
  display: block;
  margin: 0 auto 1.25rem;
  width: 176px;
  height: 176px;
  border-radius: 44px;
  object-fit: cover;
  box-shadow: 0 12px 28px rgba(61, 50, 41, 0.12);
  background: #f7ebe3;
}
.about-block {
  text-align: center;
  padding-bottom: 3rem;
  max-width: 720px;
  margin: 0 auto;
}
.about-block p {
  color: var(--ink-soft);
  text-align: left;
}
.about-block .about-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.8rem;
  color: var(--accent);
}
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.88rem;
  text-align: center;
}
.site-footer .brand-link {
  display: inline-flex; align-items: center; gap: 0.35rem;
  margin-top: 0.75rem;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink-soft);
  text-decoration: none;
  transition: border-color .15s, color .15s;
}
.site-footer .brand-link:hover {
  border-color: var(--accent-soft);
  color: var(--accent);
  text-decoration: none;
}
.article-shell { width: min(100% - 2rem, var(--max)); margin: 0 auto; padding: 1.5rem 0 4rem; }
.crumb { font-size: 0.88rem; color: var(--muted); margin-bottom: 1.5rem; }
.article-header { margin-bottom: 2rem; }
.article-header .num {
  color: var(--accent); letter-spacing: 0.14em; font-size: 0.85rem;
  display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center;
}
.article-header h1 {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.5vw, 2.2rem);
  letter-spacing: 0.06em;
  margin: 0.5rem 0 0.8rem;
  line-height: 1.4;
}
.intro {
  color: var(--ink-soft);
  font-size: 1.05rem;
  border-left: 3px solid var(--accent-soft);
  padding-left: 1rem;
  margin: 1rem 0;
}
.tip {
  display: inline-flex;
  gap: 0.4rem;
  align-items: flex-start;
  background: #f6ebe3;
  color: #7a5644;
  padding: 0.7rem 1rem;
  border-radius: 12px;
  font-size: 0.9rem;
  margin: 1rem 0 0;
}
.article-body {
  font-family: var(--serif);
  font-size: 1.08rem;
  line-height: 2;
  color: #2f271f;
}
.article-body p { margin: 0 0 1.35em; text-indent: 2em; }
.article-nav {
  display: flex; justify-content: space-between; gap: 1rem;
  margin-top: 3rem; padding-top: 1.5rem;
  border-top: 1px dashed var(--line);
  font-size: 0.92rem;
}
.article-nav a { color: var(--ink-soft); }
.article-nav a:hover { color: var(--accent); }
.back-home {
  display: inline-block;
  margin-top: 2rem;
  padding: 0.65rem 1.2rem;
  border-radius: 999px;
  background: var(--ink);
  color: #fff8f3 !important;
  text-decoration: none !important;
  font-size: 0.9rem;
}
.back-home:hover { opacity: 0.9; }

/* Back to top + rocket */
.back-top {
  position: fixed;
  right: 1.15rem;
  bottom: 1.35rem;
  z-index: 40;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--card);
  color: var(--accent);
  box-shadow: 0 10px 24px rgba(61, 50, 41, 0.12);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px) scale(0.92);
  transition: opacity .25s ease, transform .25s ease, visibility .25s, background .15s, border-color .15s;
  padding: 0;
  font-family: inherit;
}
.back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.back-top:hover {
  background: #fff8f3;
  border-color: var(--accent-soft);
}
.back-top:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.back-top .back-top-icon { line-height: 1; display: block; }
.rocket-fly {
  position: fixed;
  left: var(--rx, 50%);
  bottom: var(--ry, 5rem);
  z-index: 50;
  font-size: 1.8rem;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, 0) rotate(-25deg);
  filter: drop-shadow(0 4px 8px rgba(196, 120, 90, 0.35));
}
.rocket-fly.is-launching {
  animation: rocketRise 1.05s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
}
@keyframes rocketRise {
  0% {
    opacity: 0;
    transform: translate(-50%, 20px) rotate(-20deg) scale(0.7);
  }
  12% {
    opacity: 1;
    transform: translate(-50%, 0) rotate(-25deg) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -110vh) rotate(-10deg) scale(1.15);
  }
}
@media (max-width: 600px) {
  .back-top { right: 0.9rem; bottom: 1rem; width: 44px; height: 44px; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .nav-links a:not(:first-child) { display: none; }
  .hero { padding-top: 2.2rem; }
  .article-body { font-size: 1.05rem; line-height: 1.95; }
}