:root{--fon:#f2f5f3;--paper:#ffffff;--text:#17221e;--muted:#62716b;--line:#d8e2dd;--green:#256b56;--blue:#4f7e9e;--terra:#bb7056;--gold:#d6a454}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--fon);color:var(--text);line-height:1.62;font-size:18px}
a{color:inherit}.site-content{max-width:1500px;margin:auto}.site-top{position:sticky;top:0;z-index:5;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.top-inner{max-width:1440px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:17px clamp(18px,4vw,56px)}
.brand-mark{text-decoration:none;font-weight:800;font-size:24px;color:var(--green);letter-spacing:0}.primary-nav{display:flex;gap:10px;flex-wrap:wrap}.primary-nav a{text-decoration:none;font-size:15px;padding:7px 10px;border:1px solid transparent}.primary-nav a:hover{border-color:var(--line);background:#fff}
.intro-panel{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:end;padding:58px clamp(18px,5vw,74px) 36px}.intro-panel h1{font-size:clamp(40px,7vw,76px);line-height:.98;margin:0 0 22px;max-width:900px}.intro-panel p{font-size:21px;max-width:760px;color:#4c5654;margin:0}.intro-image{width:100%;aspect-ratio:1.1;border-radius:8px;object-fit:cover;border:1px solid var(--line)}
.topic-grid{padding:22px clamp(18px,5vw,74px);display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.topic-card{display:block;text-decoration:none;background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:22px;min-height:170px}.topic-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(32,67,55,.09)}.topic-card b{display:block;color:var(--green);font-size:20px;margin-bottom:10px}.topic-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.45}
.featured-section{padding:24px clamp(18px,5vw,74px) 64px}.featured-section h2{font-size:34px;margin:20px 0}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.story-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 5px 18px rgba(32,67,55,.05)}.story-card a{text-decoration:none;display:block;height:100%}.story-card img{width:100%;aspect-ratio:1.6;object-fit:cover;display:block}.story-card span{display:inline-block;color:var(--terra);font-size:14px;font-weight:700;margin:16px 18px 0}.story-card h3{font-size:22px;line-height:1.18;margin:8px 18px}.story-card p{margin:0 18px 20px;color:var(--muted);font-size:15px;line-height:1.48}
.article-page{max-width:860px;margin:0 auto;padding:42px 18px 80px}.trail,.article-meta{color:var(--muted);font-size:15px}.trail a{color:var(--green)}.article-page h1{font-size:clamp(36px,6vw,58px);line-height:1.05;margin:20px 0}.article-intro{font-size:22px;color:#414b49}.article-cover{width:100%;height:auto;border-radius:8px;border:1px solid var(--line);margin:22px 0}.article-page h2{font-size:30px;line-height:1.16;margin:38px 0 10px}.note-box{background:#fff8df;border-left:5px solid var(--gold);padding:16px 18px;margin:20px 0;border-radius:6px}.note-box.compact{font-size:16px}.references{border-top:1px solid var(--line);margin-top:42px;padding-top:20px}.references ul{padding-left:22px}
.section-heading{padding:44px clamp(18px,5vw,74px) 18px}.section-heading h1{font-size:50px;line-height:1;margin:0 0 14px}.section-heading p{max-width:760px;color:var(--muted)}
.site-footer{display:flex;justify-content:space-between;gap:24px;padding:30px clamp(18px,5vw,74px);background:#17221e;color:#f7f3e8}.site-footer p{max-width:720px;color:#d7d0c1;margin:8px 0 0;font-size:15px}.footer-nav{display:flex;gap:14px;align-items:flex-start;flex-wrap:wrap}.site-footer a{color:#fff}
@media(max-width:900px){.intro-panel{grid-template-columns:1fr}.topic-grid{grid-template-columns:repeat(2,1fr)}.article-grid{grid-template-columns:repeat(2,1fr)}.site-footer{display:block}.footer-nav{margin-top:18px}}
@media(max-width:620px){body{font-size:17px}.site-top{position:static}.top-inner{display:block}.top-inner{max-width:1440px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:17px clamp(18px,4vw,56px)}.primary-nav{margin-top:12px}.intro-panel{padding-top:34px}.topic-grid,.article-grid{grid-template-columns:1fr}.article-page h1{font-size:34px}.article-intro{font-size:19px}}