/* 心经官网 · 禅意古典 */
@font-face {
  font-family: "XJ Song";
  src: local("Source Han Serif SC"), local("Noto Serif CJK SC"), local("Songti SC"), local("STSong"), local("SimSun");
  font-display: swap;
}
@font-face {
  font-family: "XJ Kai";
  src: local("Kaiti SC"), local("STKaiti"), local("KaiTi"), local("FZKai-Z03");
  font-display: swap;
}

:root {
  --ink: #1a1a18;
  --ink-soft: #3d3a34;
  --ink-mute: #6b655c;
  --paper: #f7f3ea;
  --paper-deep: #efe8d8;
  --cinnabar: #8b2e2e;
  --cinnabar-deep: #6e2222;
  --jade: #2f5d50;
  --gold: #a6894d;
  --line: rgba(26, 26, 24, 0.12);
  --shadow: 0 18px 50px rgba(26, 26, 24, 0.08);
  --radius: 2px;
  --container: 1080px;
  --font-serif: "XJ Song", "Source Han Serif SC", "Noto Serif SC", "Songti SC", serif;
  --font-kai: "XJ Kai", "Kaiti SC", "STKaiti", "KaiTi", serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.85;
  background: var(--paper);
  min-height: 100vh;
  position: relative;
}
a { color: var(--cinnabar); text-decoration: none; transition: color .2s ease, opacity .2s ease; }
a:hover { color: var(--cinnabar-deep); }
img { max-width: 100%; height: auto; }
.container { width: min(100% - 2rem, var(--container)); margin-inline: auto; }

.ink-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(47, 93, 80, 0.07), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(166, 137, 77, 0.08), transparent 50%),
    linear-gradient(180deg, #faf6ee 0%, var(--paper) 40%, #f3eee3 100%);
}
.ink-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(247, 243, 234, 0.88);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: inherit;
}
.brand-seal {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 2px solid var(--cinnabar);
  color: var(--cinnabar);
  font-family: var(--font-kai);
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  transform: rotate(-6deg);
  box-shadow: inset 0 0 0 1px rgba(139, 46, 46, 0.25);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name {
  font-family: var(--font-kai);
  font-size: 1.35rem;
  letter-spacing: 0.18em;
  color: var(--ink);
}
.brand-sub {
  margin-top: 0.2rem;
  font-size: 0.75rem;
  color: var(--ink-mute);
  letter-spacing: 0.12em;
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.1rem;
  align-items: center;
}
.site-nav a {
  color: var(--ink-soft);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  padding: 0.35rem 0;
  position: relative;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--cinnabar);
  transform: scaleX(0);
  transition: transform .25s ease;
}
.site-nav a:hover::after,
.site-nav a.active::after { transform: scaleX(1); }
.site-nav a.active { color: var(--cinnabar); }
.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  background: transparent;
  padding: 0;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 18px; height: 1.5px;
  margin: 4px auto;
  background: var(--ink);
}

/* Hero */
.hero {
  position: relative;
  min-height: min(88vh, 760px);
  display: grid;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding: 4.5rem 0 5rem;
  max-width: 720px;
  animation: rise 1s ease both;
}
.hero-brand {
  margin: 0 0 1.25rem;
  font-family: var(--font-kai);
  font-size: clamp(2rem, 5vw, 3.4rem);
  letter-spacing: 0.28em;
  color: var(--ink);
}
.hero-title {
  margin: 0;
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  font-weight: 500;
  letter-spacing: 0.35em;
  color: var(--jade);
}
.hero-lead {
  margin: 1.4rem 0 2.2rem;
  color: var(--ink-mute);
  letter-spacing: 0.18em;
  font-size: 0.98rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.85rem; }
.hero-art {
  position: absolute;
  right: max(2vw, calc((100% - var(--container)) / 2 - 2rem));
  top: 50%;
  transform: translateY(-50%);
  width: min(42vw, 380px);
  aspect-ratio: 1;
  opacity: 0.55;
  pointer-events: none;
}
.lotus-ring {
  width: 100%;
  height: 100%;
  border: 1px solid rgba(47, 93, 80, 0.25);
  border-radius: 50%;
  position: relative;
  animation: spin 60s linear infinite;
}
.lotus-ring::before,
.lotus-ring::after {
  content: "";
  position: absolute;
  inset: 12%;
  border: 1px solid rgba(166, 137, 77, 0.35);
  border-radius: 50%;
}
.lotus-ring::after {
  inset: 28%;
  border-color: rgba(139, 46, 46, 0.28);
  animation: spin 40s linear infinite reverse;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 1.4rem;
  border: 1px solid transparent;
  letter-spacing: 0.18em;
  font-family: inherit;
  font-size: 0.92rem;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.btn-primary {
  background: var(--cinnabar);
  color: #f8f2e8;
}
.btn-primary:hover {
  background: var(--cinnabar-deep);
  color: #fff;
  transform: translateY(-1px);
}
.btn-ghost {
  border-color: rgba(26, 26, 24, 0.28);
  color: var(--ink-soft);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--cinnabar); color: var(--cinnabar); }

.verse-band {
  padding: 2.8rem 0;
  background: linear-gradient(90deg, transparent, rgba(47, 93, 80, 0.05), transparent);
  border-bottom: 1px solid var(--line);
}
.verse {
  margin: 0;
  text-align: center;
  font-family: var(--font-kai);
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  letter-spacing: 0.2em;
  color: var(--ink-soft);
  line-height: 2.1;
}
.verse p { margin: 0; }

.section { padding: 3.5rem 0 4rem; }
.section-head {
  text-align: center;
  margin-bottom: 2.4rem;
}
.section-head h1,
.section-head h2 {
  margin: 0.2rem 0 0.6rem;
  font-family: var(--font-kai);
  font-weight: 500;
  letter-spacing: 0.22em;
  font-size: clamp(1.5rem, 3vw, 2rem);
}
.section-head p {
  margin: 0;
  color: var(--ink-mute);
  letter-spacing: 0.12em;
}
.eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  color: var(--gold);
  text-transform: none;
}

.article-list { display: grid; gap: 0; }
.article-row {
  padding: 1.6rem 0;
  border-top: 1px solid var(--line);
  animation: rise .7s ease both;
}
.article-row:last-child { border-bottom: 1px solid var(--line); }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  color: var(--ink-mute);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.45rem;
}
.tag {
  color: var(--jade);
  border-bottom: 1px solid rgba(47, 93, 80, 0.3);
  font-size: 0.82rem;
}
.article-title {
  margin: 0 0 0.55rem;
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.5;
}
.article-title a { color: var(--ink); }
.article-title a:hover { color: var(--cinnabar); }
.article-excerpt {
  margin: 0 0 0.85rem;
  color: var(--ink-soft);
  max-width: 46em;
}
.read-more {
  font-size: 0.88rem;
  letter-spacing: 0.16em;
  color: var(--gold);
}
.read-more:hover { color: var(--cinnabar); }

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 2.5rem;
}
.pagination a,
.pagination span {
  min-width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 0.7rem;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.9rem;
}
.pagination .current {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

/* Article */
.article-page { padding: 2.2rem 0 4rem; }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  font-size: 0.86rem;
  color: var(--ink-mute);
  margin-bottom: 1.6rem;
}
.breadcrumb a { color: var(--ink-mute); }
.article-head {
  margin-bottom: 2rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--line);
}
.article-head h1 {
  margin: 0 0 0.8rem;
  font-family: var(--font-kai);
  font-weight: 500;
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  letter-spacing: 0.08em;
  line-height: 1.4;
}
.prose {
  font-size: 1.05rem;
  line-height: 2;
  color: var(--ink-soft);
}
.prose p { margin: 0 0 1.2em; }
.prose img {
  display: block;
  margin: 1.5rem auto;
  box-shadow: var(--shadow);
}
.prose h2, .prose h3 {
  color: var(--ink);
  font-family: var(--font-kai);
  letter-spacing: 0.1em;
  margin: 1.8em 0 0.7em;
}
.sutra-frame {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 2.5rem;
  border: 1px solid rgba(139, 46, 46, 0.25);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.35), transparent),
    var(--paper-deep);
  box-shadow: var(--shadow);
}
.sutra-label {
  text-align: center;
  font-family: var(--font-kai);
  letter-spacing: 0.4em;
  color: var(--cinnabar);
  margin: 0 0 1.5rem;
}
.sutra-text {
  text-align: center;
  font-family: var(--font-kai);
  font-size: clamp(1.1rem, 2.4vw, 1.35rem);
  letter-spacing: 0.18em;
  line-height: 2.35;
  color: var(--ink);
}

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.post-nav a {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1rem;
  border: 1px solid var(--line);
  color: inherit;
  background: rgba(255,255,255,0.35);
}
.post-nav a span { font-size: 0.8rem; color: var(--ink-mute); letter-spacing: 0.12em; }
.post-nav a strong { font-weight: 500; color: var(--ink); }
.post-nav .next { text-align: right; }
.related { margin-top: 2.5rem; }
.related h2 {
  font-family: var(--font-kai);
  letter-spacing: 0.16em;
  font-size: 1.2rem;
  font-weight: 500;
  margin: 0 0 0.8rem;
}
.related ul { list-style: none; padding: 0; margin: 0; }
.related li { border-top: 1px solid var(--line); }
.related a {
  display: block;
  padding: 0.85rem 0;
  color: var(--ink-soft);
}
.related a:hover { color: var(--cinnabar); }

.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  background: #efe8d8;
  padding: 2.8rem 0 2.2rem;
}
.footer-inner { display: grid; gap: 1.4rem; }
.footer-brand { display: flex; gap: 0.9rem; align-items: center; }
.footer-seal {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border: 2px solid var(--cinnabar);
  color: var(--cinnabar);
  font-family: var(--font-kai);
  font-size: 1.3rem;
}
.footer-name {
  margin: 0;
  font-family: var(--font-kai);
  letter-spacing: 0.2em;
}
.footer-motto {
  margin: 0.25rem 0 0;
  color: var(--ink-mute);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-links a { color: var(--ink-soft); letter-spacing: 0.1em; }
.footer-copy {
  margin: 0;
  color: var(--ink-mute);
  font-size: 0.84rem;
}
.footer-copy a { color: inherit; }
.ad-slot { margin: 1.5rem auto; }
.ad-slot:empty, .ad-slot[hidden] { display: none; }
.empty { text-align: center; color: var(--ink-mute); padding: 2rem 0; }

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 860px) {
  .hero-art { opacity: 0.22; width: 70vw; right: -12vw; }
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    left: 0; right: 0; top: 72px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(247, 243, 234, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem 1rem 1rem;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 0.75rem 0; border-bottom: 1px solid var(--line); }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav .next { text-align: left; }
  .hero-inner { padding: 3.2rem 0 3.5rem; }
  .brand-sub { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}