:root {
  --ink: #14221d;
  --muted: #52645c;
  --green: #0f6a49;
  --green-dark: #083e2e;
  --green-soft: #e8f2ed;
  --sand: #d9a755;
  --sand-soft: #fbf5e8;
  --line: #dbe4df;
  --paper: #ffffff;
  --mist: #f4f7f5;
  --shadow: 0 18px 50px rgba(10, 46, 34, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--green); text-underline-offset: .2em; }
img { max-width: 100%; height: auto; }
.shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 18px; color: var(--ink); text-decoration: none; }
.brand img { width: 148px; height: auto; display: block; }
.brand span { padding-left: 18px; border-left: 1px solid var(--line); display: flex; flex-direction: column; line-height: 1.25; }
.brand b { font-size: 16px; }
.brand small { color: var(--muted); font-size: 12px; letter-spacing: .08em; }
.main-nav { display: flex; gap: 24px; align-items: center; }
.main-nav a { color: var(--ink); text-decoration: none; font-size: 14px; }
.main-nav a:last-child { color: white; background: var(--green-dark); padding: 9px 16px; border-radius: 999px; }

.eyebrow { margin: 0 0 14px; color: var(--green); font-weight: 750; font-size: 12px; letter-spacing: .16em; text-transform: uppercase; }
.home-hero {
  position: relative;
  overflow: hidden;
  color: white;
  background:
    radial-gradient(circle at 82% 20%, rgba(217, 167, 85, .25), transparent 28%),
    linear-gradient(125deg, #072c22 0%, #0c5940 66%, #177758 100%);
}
.home-hero::after { content: ""; position: absolute; inset: auto -8% -46% 48%; width: 690px; height: 690px; border: 1px solid rgba(255,255,255,.15); border-radius: 50%; }
.hero-grid { position: relative; z-index: 1; min-height: 610px; padding: 100px 0; display: grid; grid-template-columns: 1.35fr .78fr; gap: 76px; align-items: center; }
.home-hero .eyebrow { color: #cce9dc; }
.home-hero h1 { margin: 0; font-size: clamp(42px, 5.6vw, 74px); line-height: 1.12; letter-spacing: -.04em; }
.hero-lead { max-width: 720px; margin: 30px 0; color: #e8f3ee; font-size: 20px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 20px; border-radius: 8px; background: var(--green); color: white; font-weight: 700; text-decoration: none; }
.home-hero .button { background: var(--sand); color: #14221d; }
.home-hero .button.ghost { color: white; border: 1px solid rgba(255,255,255,.42); background: transparent; }
.status-card { padding: 30px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.24); border-radius: 18px; box-shadow: var(--shadow); }
.status-card .live { display: inline-block; margin-bottom: 18px; padding: 5px 12px; border-radius: 99px; background: #d9f6e6; color: var(--green-dark); font-size: 12px; font-weight: 750; }
.status-card strong { display: block; font-size: 22px; line-height: 1.45; }
.status-card p { color: #dcece5; }
.status-card dl { margin: 24px 0 0; border-top: 1px solid rgba(255,255,255,.2); }
.status-card dl div { display: grid; grid-template-columns: 84px 1fr; gap: 12px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.13); }
.status-card dt { color: #b7d5c8; font-size: 13px; }
.status-card dd { margin: 0; font-size: 14px; }

.principles { padding: 86px 0; background: var(--mist); }
.section-head { max-width: 760px; margin-bottom: 38px; }
.section-head h2 { margin: 0 0 16px; font-size: clamp(30px, 4vw, 50px); line-height: 1.22; letter-spacing: -.03em; }
.section-head p:last-child { color: var(--muted); font-size: 17px; }
.principle-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.principle-grid article { padding: 28px; background: white; border: 1px solid var(--line); border-radius: 14px; }
.principle-grid b { color: var(--sand); font-size: 13px; }
.principle-grid h3 { margin: 22px 0 8px; font-size: 21px; }
.principle-grid p { margin: 0; color: var(--muted); font-size: 14px; }

.topics { padding-block: 92px 110px; }
.topic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.topic-card { display: flex; flex-direction: column; min-height: 330px; padding: 30px; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 8px 30px rgba(10,46,34,.035); transition: transform .2s ease, border-color .2s ease; }
.topic-card:hover { transform: translateY(-4px); border-color: #a4c6b7; }
.topic-card > span { color: var(--green); font-weight: 750; font-size: 12px; letter-spacing: .09em; }
.topic-card h2 { margin: 18px 0 14px; font-size: 23px; line-height: 1.4; }
.topic-card h2 a { color: var(--ink); text-decoration: none; }
.topic-card p { margin: 0; color: var(--muted); font-size: 15px; }
.text-link { margin-top: auto; padding-top: 22px; font-weight: 700; text-decoration: none; }
.home-cta { padding: 76px 0; color: white; background: #132c24; }
.home-cta .eyebrow { color: #a8d2c0; }
.cta-grid { display: grid; grid-template-columns: 1.45fr .7fr; gap: 68px; align-items: center; }
.cta-grid h2 { margin: 0 0 16px; font-size: 38px; line-height: 1.3; }
.cta-grid p { color: #cfe0d8; }
.cta-grid .button { margin-bottom: 12px; background: var(--sand); color: var(--ink); }

.breadcrumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 28px 0 6px; color: #75837c; font-size: 13px; }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.article { padding-bottom: 100px; }
.article-hero { max-width: 940px; padding: 64px 0 48px; }
.article-hero h1 { margin: 0; font-size: clamp(36px, 5vw, 62px); line-height: 1.18; letter-spacing: -.04em; }
.dek { max-width: 850px; margin: 26px 0 18px; color: var(--muted); font-size: 20px; }
.meta { display: flex; flex-wrap: wrap; gap: 8px 18px; color: #718078; font-size: 13px; }
.direct-answer { margin: 0 0 46px; padding: 30px 34px; border-left: 5px solid var(--sand); border-radius: 0 14px 14px 0; background: var(--sand-soft); }
.direct-answer span { display: block; margin-bottom: 10px; color: #8a5e18; font-weight: 800; font-size: 12px; letter-spacing: .12em; }
.direct-answer p { margin: 0; font-size: 19px; line-height: 1.85; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 70px; align-items: start; }
.article-body { min-width: 0; }
.article-section { margin-bottom: 48px; }
.article-section h2 { margin: 0 0 18px; font-size: 29px; line-height: 1.35; }
.article-section p, .article-section li { color: #31423a; font-size: 17px; }
.article-section ul, .article-section ol { margin: 14px 0; padding-left: 1.35em; }
.article-section li { margin: 9px 0; }
.source-panel { position: sticky; top: 102px; padding: 26px; border: 1px solid var(--line); border-radius: 14px; background: var(--mist); }
.source-panel h2 { margin: 0 0 14px; font-size: 18px; }
.source-panel ol { margin: 0; padding-left: 1.35em; }
.source-panel li { margin: 0 0 17px; padding-left: 5px; color: var(--muted); font-size: 13px; }
.source-panel li a { display: block; color: var(--ink); font-weight: 700; line-height: 1.55; }
.source-panel li span { display: block; margin-top: 4px; color: #718078; line-height: 1.55; }
.source-note { padding-top: 18px; border-top: 1px solid var(--line); color: #718078; font-size: 12px; }
.service-note { padding: 30px; border-radius: 14px; background: var(--green-soft); }
.service-note .button { margin-top: 6px; }
.faq-list details { margin-bottom: 12px; border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.faq-list summary { cursor: pointer; font-weight: 700; }
.faq-list p { margin: 12px 0 0; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; min-width: 900px; }
th, td { padding: 15px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: 14px; }
th { background: var(--mist); color: var(--muted); }
tbody tr:last-child td { border-bottom: 0; }
.not-found { min-height: 60vh; padding-block: 110px; }
.not-found h1 { font-size: 52px; margin: 0 0 12px; }

.site-footer { padding: 54px 0; color: #d7e4de; background: #071c16; }
.footer-grid { display: grid; grid-template-columns: 1.3fr .7fr 1fr; gap: 50px; }
.site-footer strong { color: white; }
.site-footer p { margin: 10px 0 0; color: #a9bbb3; font-size: 13px; }
.site-footer a { color: #d8e7e0; }

@media (max-width: 980px) {
  .main-nav a:not(:last-child) { display: none; }
  .hero-grid, .cta-grid, .article-layout { grid-template-columns: 1fr; }
  .hero-grid { gap: 42px; padding: 72px 0; }
  .status-card { max-width: 650px; }
  .principle-grid, .topic-grid { grid-template-columns: repeat(2, 1fr); }
  .source-panel { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .shell { width: min(100% - 28px, 1180px); }
  .nav-wrap { min-height: 66px; }
  .brand img { width: 112px; }
  .brand span { display: none; }
  .main-nav a:last-child { padding: 8px 13px; font-size: 13px; }
  .hero-grid { min-height: auto; padding: 62px 0; }
  .home-hero h1 { font-size: 42px; }
  .hero-lead { font-size: 17px; }
  .principles, .topics { padding-block: 66px; }
  .principle-grid, .topic-grid, .footer-grid { grid-template-columns: 1fr; }
  .topic-card { min-height: 270px; }
  .article-hero { padding: 44px 0 34px; }
  .article-hero h1 { font-size: 38px; }
  .dek { font-size: 17px; }
  .direct-answer { padding: 24px; }
  .direct-answer p { font-size: 17px; }
  .article-layout { gap: 30px; }
  .article-section h2 { font-size: 25px; }
  .article-section p, .article-section li { font-size: 16px; }
  .cta-grid h2 { font-size: 30px; }
}

@media print {
  .site-header, .site-footer, .hero-actions, .button { display: none !important; }
  .article-layout { display: block; }
  .source-panel { position: static; page-break-inside: avoid; }
  a { color: inherit; text-decoration: none; }
}