:root {
  color-scheme: light;
  --ink: #172a23;
  --green: #18654d;
  --muted: #4f6259;
  --line: #d9dfd7;
  --paper: #f9faf6;
  --sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --serif: "Songti SC", "Noto Serif CJK SC", SimSun, serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
}
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--green); outline-offset: 5px; }
.skip {
  position: absolute;
  z-index: 2;
  top: 8px;
  left: 8px;
  padding: 12px;
  background: white;
  transform: translateY(-150%);
}
.skip:focus { transform: none; }
.shell { width: min(1280px, calc(100% - 112px)); margin-inline: auto; }
.header {
  min-height: 94px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}
.wordmark img { display: block; width: clamp(78px, 13vw, 124px); height: auto; }
nav { display: flex; align-items: center; gap: 32px; font-size: 14px; }
nav a { display: inline-flex; min-height: 44px; align-items: center; gap: 7px; }
nav a:hover, .section-link:hover { color: var(--green); }
.hero {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: clamp(24px, 5vw, 76px);
  align-items: center;
  padding-block: clamp(64px, 8vw, 118px);
}
.eyebrow {
  margin: 0;
  color: var(--green);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .09em;
  line-height: 1.7;
}
h1 {
  margin: 23px 0 24px;
  font: 700 clamp(60px, 7.4vw, 110px)/1.08 var(--serif);
  letter-spacing: -.05em;
}
.hero-description {
  margin: 0 0 18px;
  font-size: clamp(15px, 1.5vw, 19px);
  color: var(--muted);
  line-height: 1.75;
}
.section-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 21px;
  border-bottom: 1px solid var(--green);
  font-size: 14px;
}
.brand-panel {
  display: grid;
  place-items: center;
  min-width: 0;
  aspect-ratio: 1.16;
  overflow: hidden;
  background: #18624b;
}
.brand-panel img { display: block; width: 66%; height: auto; }
.section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  border-top: 1px solid var(--line);
  padding-block: clamp(44px, 7vw, 94px);
}
h2 { margin: 0; font: 700 clamp(31px, 4vw, 51px)/1.2 var(--serif); }
.intro { margin: 0 0 13px; font-size: clamp(17px, 2vw, 24px); line-height: 1.6; }
.description { margin: 0; color: var(--muted); line-height: 1.85; max-width: 36em; }
.description + .description { margin-top: 12px; }
.partner {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.partner img { width: 60px; height: auto; }
.partner p { margin: 0; font-weight: 600; line-height: 1.6; }
.partner span { display: block; color: var(--muted); font-size: 14px; font-weight: 400; }
.email {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  color: var(--green);
  font-size: clamp(22px, 3vw, 34px);
  margin-bottom: 8px;
}
.email:hover { text-decoration: underline; }
.email span { font-size: .6em; }
.filing { text-decoration: underline; text-underline-offset: 3px; }
.footer {
  border-top: 1px solid var(--line);
  padding-block: 26px 30px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}
.footer p { margin: 7px 0; }
@media (max-width: 850px) {
  .shell { width: calc(100% - 56px); }
  h1 { font-size: clamp(48px, 8.8vw, 74px); }
}
@media (max-width: 640px) {
  .shell { width: calc(100% - 40px); }
  .header { min-height: 75px; gap: 12px; }
  nav { gap: 12px; font-size: 13px; }
  .hero, .section { grid-template-columns: 1fr; }
  .hero { padding-block: 52px; gap: 36px; }
  .brand-panel { aspect-ratio: 1.28; }
  .section { gap: 20px; }
}
@media (max-width: 355px) {
  .shell { width: calc(100% - 28px); }
  nav { gap: 8px; font-size: 12px; }
}