:root {
  color-scheme: light;
  --paper: #f5efe5;
  --paper-soft: #fbf8f2;
  --paper-strong: #efe6d7;
  --ink: #302d29;
  --ink-soft: #5a544d;
  --line: rgba(48, 45, 41, 0.12);
  --line-strong: rgba(48, 45, 41, 0.18);
  --accent: #4f5d66;
  --shadow: 0 18px 36px rgba(59, 49, 36, 0.07);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    linear-gradient(180deg, #f7f2e9 0%, #f3ede3 100%);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

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

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.page-shell {
  width: min(1140px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 28px 0 24px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.site-nav a {
  position: relative;
  padding-bottom: 2px;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: currentColor;
  opacity: 0;
  transform: scaleX(0.85);
  transform-origin: center;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  opacity: 0.65;
  transform: scaleX(1);
}

main {
  padding-top: 32px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 34px;
  align-items: center;
}

.eyebrow,
.section-kicker,
.essay-meta,
.section-note,
.latest-date,
.latest-time,
.about-facts dt {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.86rem;
  letter-spacing: 0;
}

.hero-copy h1 {
  margin: 0;
  max-width: 9ch;
  font-size: clamp(2.8rem, 5vw, 4.6rem);
  line-height: 1.04;
  font-weight: 700;
  letter-spacing: 0;
}

.hero-lead {
  margin: 22px 0 0;
  max-width: 34rem;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(251, 248, 242, 0.72);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.hero-media {
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(251, 248, 242, 0.76);
  box-shadow: var(--shadow);
}

.hero-media img {
  display: block;
  width: 100%;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  border-radius: 6px;
}

.content-section {
  padding-top: 74px;
  margin-top: 70px;
  border-top: 1px solid var(--line);
}

.standalone-section {
  padding-top: 34px;
  margin-top: 0;
  border-top: 0;
  min-height: 430px;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.72fr);
  gap: 24px;
  align-items: end;
  margin-bottom: 28px;
}

.section-kicker {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.86rem;
}

.section-head h1,
.section-head h2 {
  margin: 0;
  font-size: clamp(1.6rem, 2.3vw, 2.1rem);
  line-height: 1.22;
  font-weight: 700;
}

.section-note {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.essay-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.essay-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 100%;
  padding: 22px 22px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(251, 248, 242, 0.82);
  box-shadow: 0 10px 24px rgba(54, 42, 28, 0.04);
}

.essay-card h3 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.35;
  font-weight: 700;
}

.essay-meta {
  margin: 0;
  font-size: 0.82rem;
  letter-spacing: 0;
  color: var(--accent);
}

.essay-summary,
.essay-body p,
.latest-item p,
.about-copy p {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  line-height: 1.9;
  color: var(--ink-soft);
}

.essay-summary {
  font-size: 0.98rem;
  color: var(--ink);
}

.essay-body {
  display: grid;
  gap: 12px;
  margin-top: 2px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.essay-body p {
  font-size: 0.95rem;
}

.latest-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.latest-item {
  padding: 18px 0 16px;
  border-bottom: 1px solid var(--line);
}

.latest-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 12px 16px;
  align-items: baseline;
}

.latest-title {
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.45;
}

.latest-date,
.latest-time {
  font-size: 0.84rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

.latest-item p {
  margin-top: 10px;
  font-size: 0.96rem;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 24px;
  align-items: start;
}

.about-copy {
  display: grid;
  gap: 14px;
  padding-right: 12px;
}

.about-copy p {
  font-size: 1rem;
}

.about-facts {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
}

.about-facts div {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(251, 248, 242, 0.76);
}

.about-facts dt {
  margin: 0 0 8px;
  font-size: 0.82rem;
  color: var(--accent);
}

.about-facts dd {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--ink);
}

.about-extra {
  display: grid;
  gap: 34px;
  margin-top: 46px;
}

.about-subsection {
  display: grid;
  gap: 14px;
}

.about-topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.about-topic-grid article {
  padding: 18px 18px 17px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(251, 248, 242, 0.72);
}

.about-topic-grid h2 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  line-height: 1.4;
}

.about-topic-grid p,
.about-notes span,
.about-closing {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  line-height: 1.85;
  color: var(--ink-soft);
}

.about-topic-grid p {
  font-size: 0.95rem;
}

.about-notes {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.about-notes li {
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.about-notes span {
  display: block;
  max-width: 52rem;
  font-size: 0.96rem;
}

.about-closing {
  max-width: 44rem;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-size: 1rem;
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 30px 0 12px;
  margin-top: 78px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}

.site-footer > p:first-child {
  justify-self: start;
}

.site-footer .beian {
  grid-column: 2;
  justify-self: center;
}

.beian a {
  color: var(--ink-soft);
}

.beian a:hover,
.beian a:focus-visible {
  color: var(--ink);
}

@media (max-width: 960px) {
  .hero,
  .section-head,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .essay-grid,
  .about-topic-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100vw - 24px, 1140px);
    padding-top: 18px;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    gap: 14px;
    font-size: 0.88rem;
  }

  main {
    padding-top: 22px;
  }

  .hero {
    gap: 18px;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .content-section {
    padding-top: 48px;
    margin-top: 52px;
  }

  .latest-link {
    grid-template-columns: 1fr;
  }

  .latest-date,
  .latest-time {
    white-space: normal;
  }

  .site-footer {
    margin-top: 56px;
  }
}