:root {
  --bg: #f4f6f3;
  --paper: #ffffff;
  --ink: #17211c;
  --muted: #5d6861;
  --line: #dfe5de;
  --green: #1f7a4d;
  --teal: #187a74;
  --amber: #b36d11;
  --mint: #e8f4eb;
  --ice: #e8f3f5;
  --shadow: 0 18px 48px rgba(31, 49, 39, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, #f8faf6 0, var(--bg) 520px),
    var(--bg);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 50;
  border-radius: var(--radius);
  background: var(--paper);
  padding: 10px 14px;
  color: var(--ink);
  box-shadow: var(--shadow);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  width: min(1440px, calc(100% - 56px));
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 0 auto;
}

.brand,
.nav a,
.footer-links,
.back-link,
.page-meta span,
.card-link,
.brand-icon,
.policy-icon {
  display: inline-flex;
  align-items: center;
}

.brand {
  gap: 12px;
  color: inherit;
  font-size: 1.16rem;
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}

.brand-icon {
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--green);
  border-radius: 50%;
  background: #fff;
  color: var(--green);
}

.brand-icon svg {
  width: 29px;
  height: 29px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav a {
  min-height: 72px;
  padding: 0 2px;
  color: inherit;
  font-size: 0.92rem;
  font-weight: 750;
  text-decoration: none;
}

.nav a:hover {
  color: var(--green);
}

.back-link {
  min-height: 38px;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  padding: 9px 13px;
  color: var(--green);
  font-weight: 850;
  text-decoration: none;
  white-space: nowrap;
}

.nav .back-link {
  min-height: 38px;
}

.page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 128px 0 86px;
}

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.38fr);
  gap: 42px;
  align-items: end;
  margin-bottom: 34px;
}

.eyebrow {
  margin-bottom: 12px;
  color: var(--green);
  font-size: 0.9rem;
  font-weight: 900;
}

.page-hero h1 {
  margin-bottom: 16px;
  font-size: clamp(2.6rem, 5vw, 4.5rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.page-hero p {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1.04rem, 1.8vw, 1.22rem);
}

.hero-note {
  border: 1px solid #d4e4d7;
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(232, 244, 235, 0.96), rgba(255, 255, 255, 0.96)),
    #fff;
  padding: 20px;
  box-shadow: 0 12px 34px rgba(31, 49, 39, 0.07);
}

.hero-note strong {
  display: block;
  margin-bottom: 8px;
  color: #165f3e;
  font-size: 1.08rem;
}

.hero-note p {
  color: var(--muted);
  font-size: 0.95rem;
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.page-meta span {
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  padding: 7px 10px;
  color: #225f3e;
  font-size: 0.82rem;
  font-weight: 850;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.28fr) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.page-aside,
.article-card,
.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 0 10px 28px rgba(25, 42, 32, 0.05);
}

.page-aside {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 12px;
  padding: 16px;
}

.page-aside h2 {
  margin-bottom: 2px;
  font-size: 1.02rem;
}

.page-aside a {
  border-radius: var(--radius);
  background: #f4faf4;
  padding: 9px 10px;
  color: #225f3e;
  font-size: 0.92rem;
  font-weight: 800;
  text-decoration: none;
}

.page-aside a:hover {
  background: var(--mint);
}

.article-stack {
  display: grid;
  gap: 16px;
}

.article-card {
  padding: 24px;
}

.article-card h2 {
  margin-bottom: 12px;
  font-size: clamp(1.35rem, 2.2vw, 1.8rem);
  line-height: 1.2;
}

.article-card p:last-child,
.article-card ul:last-child {
  margin-bottom: 0;
}

.article-card p,
.article-card li {
  color: var(--muted);
}

.article-card strong {
  color: var(--ink);
}

.article-card ul {
  margin: 0;
  padding-left: 1.2em;
}

.article-card li + li {
  margin-top: 8px;
}

.highlight-card {
  border-left: 7px solid var(--green);
  background:
    linear-gradient(135deg, rgba(232, 244, 235, 0.78), rgba(255, 255, 255, 0.98)),
    #fff;
}

.contact-card {
  display: grid;
  gap: 8px;
  margin: 18px 0;
  padding: 18px;
}

.contact-card a {
  color: var(--green);
  font-size: 1.05rem;
  font-weight: 900;
  word-break: break-word;
}

.compact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.mini-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 14px;
}

.mini-card strong {
  display: block;
  margin-bottom: 6px;
  color: #165f3e;
}

.site-boundary {
  border-top: 1px solid var(--line);
  background: #17231b;
  color: #fff;
  padding: 38px 0;
}

.site-boundary .container,
footer .container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-boundary .container {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 20px;
}

.site-boundary h2,
.site-boundary p {
  margin-bottom: 0;
}

.site-boundary p {
  color: rgba(255, 255, 255, 0.76);
}

footer {
  background: #101811;
  color: rgba(255, 255, 255, 0.72);
  padding: 18px 0;
}

footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

.footer-links {
  flex-wrap: wrap;
  gap: 12px;
}

footer a {
  color: #fff;
}

@media (max-width: 980px) {
  .nav-links {
    display: none;
  }

  .page-hero,
  .content-layout,
  .site-boundary .container {
    grid-template-columns: 1fr;
  }

  .page-aside {
    position: static;
  }
}

@media (max-width: 680px) {
  .nav {
    width: min(100% - 28px, 680px);
    min-height: 74px;
  }

  .brand span:last-child {
    font-size: 1.04rem;
  }

  .back-link {
    padding: 8px 10px;
    font-size: 0.88rem;
  }

  .page-shell {
    padding: 108px 0 58px;
  }

  .page-hero {
    gap: 22px;
  }

  .article-card {
    padding: 18px;
  }

  .compact-grid {
    grid-template-columns: 1fr;
  }
}