:root {
  --paper: #f6f3ec;
  --ink: #18211d;
  --muted: #64706a;
  --line: #d7d8cf;
  --green: #245b45;
  --coral: #c45e45;
  --yellow: #e5b851;
  --white: #fffef9;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
button, summary { font: inherit; }

.skip-link {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 8px 14px;
  background: var(--ink);
  color: white;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(24, 33, 29, .12);
  background: rgba(246, 243, 236, .94);
  backdrop-filter: blur(12px);
}
.nav-shell {
  width: min(calc(100% - 40px), var(--max));
  height: 68px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
  font-size: 18px;
}
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--green);
  border-radius: 4px;
  font-family: Georgia, serif;
}
nav { display: flex; gap: 30px; }
nav a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}
nav a:hover, nav a:focus-visible { color: var(--coral); }

.hero {
  width: min(calc(100% - 40px), var(--max));
  min-height: calc(100vh - 118px);
  max-height: 820px;
  margin: auto;
  padding: 70px 0 60px;
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(420px, 1.12fr);
  align-items: center;
  gap: clamp(40px, 7vw, 96px);
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--coral);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}
h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(76px, 11vw, 148px);
  font-weight: 500;
  line-height: .9;
  letter-spacing: 0;
}
.hero-intro {
  max-width: 540px;
  margin: 34px 0 30px;
  color: #46524c;
  font-size: 18px;
}
.primary-link {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 5px;
  border-bottom: 2px solid var(--green);
  color: var(--green);
  font-weight: 700;
  text-decoration: none;
}
.primary-link:hover span { transform: translateY(3px); }
.primary-link span { transition: transform .2s ease; }
.hero-visual { margin: 0; }
.hero-visual img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 18px 18px 0 var(--yellow);
}
.hero-visual figcaption {
  margin-top: 25px;
  color: var(--muted);
  font-size: 13px;
  text-align: right;
}

.section {
  padding: 100px max(20px, calc((100% - var(--max)) / 2));
  border-top: 1px solid var(--line);
}
.section-heading {
  margin-bottom: 46px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
}
.section-heading h2, .about h2 {
  margin: 0;
  font-family: Georgia, "Songti SC", serif;
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: 0;
}
.section-heading > p {
  max-width: 390px;
  margin: 0 0 6px;
  color: var(--muted);
  text-align: right;
}
.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.article-card {
  min-width: 0;
  padding: 36px 38px 38px 0;
  border-bottom: 1px solid var(--line);
}
.article-card:nth-child(even) {
  padding-right: 0;
  padding-left: 38px;
  border-left: 1px solid var(--line);
}
.article-card.featured { grid-column: 1 / -1; padding-right: 0; }
.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
}
.article-meta span {
  padding: 1px 8px;
  border: 1px solid #afb7b2;
  border-radius: 2px;
  color: var(--green);
}
.article-card h3, .wide-article h3 {
  margin: 15px 0 10px;
  font-family: Georgia, "Songti SC", serif;
  font-size: 25px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0;
}
.article-card > p, .wide-article p { margin: 0; color: #52605a; }
details { margin-top: 20px; }
summary {
  width: fit-content;
  color: var(--coral);
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
}
.article-body {
  margin-top: 18px;
  padding: 18px 20px;
  border-left: 3px solid var(--yellow);
  background: rgba(255, 254, 249, .7);
  color: #46524c;
}
.article-body p { margin: 0 0 12px; }
.article-body p:last-child { margin-bottom: 0; }

.contrast { background: var(--ink); color: var(--white); }
.contrast .section-heading > p, .contrast .wide-article p, .contrast .article-meta { color: #aeb8b3; }
.wide-list { border-top: 1px solid #46504b; }
.wide-article {
  padding: 42px 0;
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 34px;
  border-bottom: 1px solid #46504b;
}
.article-index { color: var(--yellow); font-family: Georgia, serif; font-size: 34px; }
.wide-article h3 { color: var(--white); }
.wide-article p + p { margin-top: 10px; }

.about {
  width: min(calc(100% - 40px), var(--max));
  margin: auto;
  padding: 110px 0;
  display: grid;
  grid-template-columns: .45fr 1.55fr;
  gap: 60px;
}
.about-label { color: var(--coral); font-size: 12px; font-weight: 800; }
.about-copy { max-width: 760px; }
.about-copy > p { max-width: 650px; margin: 28px 0 0; color: var(--muted); font-size: 17px; }
.about-copy .signature { color: var(--green); font-family: Georgia, "Kaiti SC", serif; }

.site-footer {
  padding: 34px 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}
.site-footer p { margin: 4px 0; }
.filings { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.filings a { text-underline-offset: 3px; }
.filings a:hover, .filings a:focus-visible { color: var(--coral); }
.back-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 4px;
  color: white;
  background: var(--green);
  box-shadow: 0 4px 18px rgba(0, 0, 0, .18);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity .2s ease, transform .2s ease;
}
.back-top.visible { opacity: 1; pointer-events: auto; transform: none; }

@media (max-width: 820px) {
  .hero {
    min-height: auto;
    max-height: none;
    grid-template-columns: 1fr;
    padding-top: 55px;
  }
  .hero-visual { max-width: 640px; }
  .section { padding-top: 76px; padding-bottom: 76px; }
  .section-heading { align-items: start; flex-direction: column; }
  .section-heading > p { text-align: left; }
  .article-grid { grid-template-columns: 1fr; }
  .article-card, .article-card:nth-child(even) {
    padding: 30px 0;
    border-left: 0;
  }
  .about { grid-template-columns: 1fr; gap: 24px; padding: 78px 0; }
}

@media (max-width: 560px) {
  .nav-shell { width: min(calc(100% - 28px), var(--max)); height: 62px; }
  nav { gap: 15px; }
  nav a { font-size: 12px; }
  nav a:nth-child(2) { display: none; }
  .hero, .about { width: min(calc(100% - 28px), var(--max)); }
  .hero { padding: 42px 0 46px; gap: 46px; }
  h1 { font-size: 72px; }
  .hero-intro { margin-top: 25px; font-size: 16px; }
  .hero-visual img { box-shadow: 9px 9px 0 var(--yellow); }
  .section { padding-left: 14px; padding-right: 14px; }
  .section-heading h2, .about h2 { font-size: 34px; }
  .article-card h3, .wide-article h3 { font-size: 22px; }
  .wide-article { grid-template-columns: 1fr; gap: 8px; }
  .article-index { font-size: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}