:root {
  color-scheme: light;
  --paper: #f6f5ef;
  --white: #fffefa;
  --ink: #213b36;
  --body: #455650;
  --soft: #78847d;
  --line: #dbe0d7;
  --green: #356a5d;
  --mint: #e8eee6;
  --orange: #bb7756;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  color: var(--ink);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 320px; margin: 0; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--green); }
a:focus-visible { outline: 2px solid var(--green); outline-offset: 4px; }
.wrap { width: min(100% - 64px, 1100px); margin-inline: auto; }
.skip { position: absolute; top: -60px; left: 16px; z-index: 10; padding: 10px 16px; background: var(--green); color: #fff; }
.skip:focus { top: 16px; }
.site-header { background: var(--white); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 76px; display: flex; justify-content: space-between; align-items: center; gap: 25px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 750; letter-spacing: -.04em; white-space: nowrap; }
.brand-symbol { display: grid; place-items: center; width: 37px; height: 37px; border-radius: 10px; background: var(--ink); color: #fff; font-size: 18px; font-weight: 500; }
.brand small { margin-left: 2px; color: var(--soft); font-size: 12px; font-weight: 450; letter-spacing: .02em; }
.nav { display: flex; gap: 30px; color: var(--body); font-size: 14px; }
.nav a[aria-current="page"] { color: var(--ink); font-weight: 700; }
.hero { padding-block: 72px 65px; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 55px; }
.eyebrow { display: inline-flex; align-items: center; gap: 12px; margin: 0 0 20px; color: var(--green); font-size: 12px; font-weight: 700; letter-spacing: .16em; }
.eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--green); }
h1, h2, h3, p { margin-top: 0; }
.hero h1 { max-width: 660px; margin-bottom: 25px; font-size: clamp(38px, 5.3vw, 64px); line-height: 1.25; letter-spacing: -.065em; }
.hero h1 span { color: var(--green); }
.hero-lead { max-width: 590px; margin-bottom: 29px; color: var(--body); font-size: 17px; line-height: 1.9; }
.hero-link { display: inline-flex; align-items: center; gap: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--green); color: var(--green); font-size: 15px; font-weight: 700; }
.hero-link:hover { gap: 18px; }
.hero-art { position: relative; min-height: 322px; display: grid; place-items: center; overflow: hidden; border-radius: 8px; background: #e8eee6; }
.hero-art::before { content: ""; position: absolute; width: 330px; height: 330px; border: 1px solid #bdd2c2; border-radius: 50%; transform: translate(105px,-75px); }
.hero-art::after { content: ""; position: absolute; width: 230px; height: 230px; border: 1px solid #cadbd0; border-radius: 50%; transform: translate(-170px,135px); }
.paper-card { position: relative; z-index: 1; width: min(74%, 320px); padding: 26px 26px 30px; border: 1px solid #d5ddd4; border-radius: 5px; background: var(--white); box-shadow: 14px 15px 0 #d2ddd2, 0 18px 40px rgba(31,65,50,.08); transform: rotate(-4deg); }
.paper-card .pin { display: block; width: 12px; height: 12px; margin-bottom: 23px; border-radius: 50%; background: var(--orange); }
.paper-card strong { display: block; margin-bottom: 18px; font-size: 24px; letter-spacing: -.04em; }
.paper-card .line { display: block; height: 8px; margin-top: 13px; border-radius: 10px; background: #dbe5dc; }
.paper-card .line.short { width: 60%; }
.art-caption { position: absolute; right: 25px; bottom: 19px; color: #718c7b; font-size: 11px; letter-spacing: .12em; }
.section { padding-block: 62px 95px; border-top: 1px solid var(--line); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 22px; margin-bottom: 31px; }
.section-kicker { margin-bottom: 10px; color: var(--green); font-size: 12px; font-weight: 700; letter-spacing: .15em; }
.section h2 { margin-bottom: 0; font-size: clamp(29px, 3.2vw, 40px); letter-spacing: -.05em; }
.section-head p { max-width: 350px; margin-bottom: 2px; color: var(--soft); font-size: 14px; line-height: 1.7; }
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.article-card { display: flex; flex-direction: column; min-height: 295px; padding: 27px; border: 1px solid var(--line); border-radius: 5px; background: var(--white); transition: transform .2s, box-shadow .2s, border-color .2s; }
.article-card:hover { transform: translateY(-4px); border-color: #b8cbbb; box-shadow: 0 14px 25px rgba(33,59,54,.07); }
.card-meta { display: flex; justify-content: space-between; margin-bottom: 46px; color: var(--green); font-size: 11px; font-weight: 700; letter-spacing: .12em; }
.card-meta .number { color: #a0b4a4; }
.article-card h3 { margin-bottom: 14px; font-size: 25px; line-height: 1.35; letter-spacing: -.04em; }
.article-card p { margin-bottom: 24px; color: var(--body); font-size: 14px; line-height: 1.8; }
.card-more { margin-top: auto; color: var(--green); font-size: 13px; font-weight: 700; }
.about-strip { padding: 35px 0 70px; }
.about-box { display: grid; grid-template-columns: 190px 1fr; gap: 35px; padding: 37px 42px; border-radius: 5px; background: var(--mint); }
.about-box h2 { margin: 0; font-size: 21px; }
.about-box p { max-width: 700px; margin: 0; color: var(--body); font-size: 15px; line-height: 1.9; }
.site-footer { border-top: 1px solid var(--line); background: var(--white); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px 24px; min-height: 92px; padding-block: 22px; color: var(--soft); font-size: 13px; }
.footer-inner a { color: var(--body); }
.footer-inner a:hover { color: var(--green); }
.article-layout { display: grid; grid-template-columns: minmax(0, 740px) 225px; gap: 95px; padding-block: 47px 95px; }
.breadcrumb { margin-bottom: 49px; color: var(--soft); font-size: 13px; }
.breadcrumb a { color: var(--green); }
.breadcrumb span { padding-inline: 9px; }
.article-head .eyebrow { margin-bottom: 19px; }
.article-head h1 { margin-bottom: 22px; font-size: clamp(36px, 4.3vw, 55px); line-height: 1.25; letter-spacing: -.055em; }
.article-dek { margin-bottom: 23px; color: var(--body); font-size: 19px; line-height: 1.8; }
.article-date { padding-bottom: 38px; border-bottom: 1px solid var(--line); color: var(--soft); font-size: 13px; }
.prose { padding-top: 35px; color: #32483f; font-size: 16px; line-height: 1.95; }
.prose h2 { margin: 45px 0 17px; color: var(--ink); font-size: 25px; line-height: 1.4; letter-spacing: -.035em; }
.prose h2:first-child { margin-top: 0; }
.prose p { margin-bottom: 19px; }
.prose ul, .prose ol { margin: 0 0 23px; padding-left: 1.4em; }
.prose li { padding-left: .25em; margin-bottom: 11px; }
.prose li::marker { color: var(--green); }
.prose pre { overflow-x: auto; margin: 24px 0; padding: 22px 25px; border: 1px solid var(--line); border-radius: 4px; background: var(--white); color: #294e43; font: 13px/1.8 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.prose .callout { margin: 28px 0; padding: 21px 24px; border-left: 3px solid var(--green); background: var(--mint); }
.prose .callout p { margin: 0; }
.article-aside { padding-top: 113px; }
.aside-title { margin-bottom: 17px; color: var(--soft); font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.article-aside a { display: block; padding: 15px 0; border-top: 1px solid var(--line); font-size: 14px; line-height: 1.6; }
.article-end { margin-top: 50px; padding-top: 23px; border-top: 1px solid var(--line); color: var(--green); font-size: 14px; font-weight: 700; }
@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; padding-top: 58px; gap: 30px; }
  .hero-art { max-width: 610px; width: 100%; min-height: 260px; }
  .article-layout { grid-template-columns: 1fr; gap: 20px; }
  .article-aside { padding-top: 0; }
}
@media (max-width: 680px) {
  .wrap { width: calc(100% - 36px); }
  .header-inner { min-height: 68px; }
  .brand { font-size: 18px; }
  .brand small { display: none; }
  .brand-symbol { width: 33px; height: 33px; font-size: 16px; }
  .nav { gap: 18px; font-size: 13px; }
  .hero { padding-block: 48px 55px; }
  .hero h1 { font-size: clamp(36px, 10vw, 51px); }
  .hero-lead { font-size: 15px; }
  .hero-art { min-height: 235px; }
  .paper-card { padding: 20px; }
  .paper-card strong { font-size: 21px; }
  .section { padding-block: 47px 68px; }
  .section-head { display: block; }
  .section-head p { margin: 13px 0 0; }
  .article-grid { grid-template-columns: 1fr; }
  .article-card { min-height: 235px; }
  .card-meta { margin-bottom: 25px; }
  .about-strip { padding-bottom: 55px; }
  .about-box { grid-template-columns: 1fr; gap: 14px; padding: 29px; }
  .footer-inner { display: block; }
  .footer-inner span, .footer-inner a { display: block; margin-bottom: 12px; }
  .footer-inner a { margin-bottom: 0; }
  .article-layout { padding-top: 28px; }
  .breadcrumb { margin-bottom: 38px; }
  .article-dek { font-size: 17px; }
  .prose { font-size: 15px; }
  .prose h2 { font-size: 22px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .article-card { transition: none; } }