:root{--color-ink:#162018;--color-muted:#5f6c62;--color-canvas:#f5f6ef;--color-surface:#ffffff;--color-surface-soft:#e9eddf;--color-line:#d5dccb;--color-brand:#174f3b;--color-brand-strong:#0e3829;--color-accent:#e2ff65;--color-warm:#f0a45d;--color-focus:#1463ff;--shadow-soft:0 18px 50px rgba(29, 49, 35, 0.1);--radius-sm:0.55rem;--radius-md:1rem;--radius-lg:1.5rem;--shell:76rem;--reading:47rem;--space-1:0.35rem;--space-2:0.65rem;--space-3:1rem;--space-4:1.5rem;--space-5:2.25rem;--space-6:3.5rem;--space-7:5rem}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--color-ink);background:var(--color-canvas);font-family:Inter,noto sans sc,microsoft yahei,system-ui,-apple-system,BlinkMacSystemFont,segoe ui,sans-serif;font-size:1rem;line-height:1.7;text-rendering:optimizeLegibility}body::before{position:fixed;inset:0;z-index:-1;background:radial-gradient(circle at 8% 4%,rgba(226,255,101,.18),transparent 24rem),linear-gradient(180deg,#fbfcf6 0,var(--color-canvas) 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input,.searchBox{width:100%;min-height:3.15rem;padding:.75rem 1rem;color:var(--color-ink);border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-surface)}.button{display:inline-flex;min-height:3.15rem;align-items:center;justify-content:center;padding:.7rem 1.1rem;color:#fff;border:1px solid var(--color-brand);border-radius:var(--radius-sm);background:var(--color-brand);font-weight:750;text-decoration:none;cursor:pointer}.button:hover{color:#fff;background:var(--color-brand-strong)}.button-secondary{color:var(--color-brand);background:0 0}.button-secondary:hover{color:var(--color-brand-strong);background:var(--color-surface-soft)}.section{padding-block:var(--space-6)}.section-compact{padding-block:clamp(2.5rem,6vw,4rem)}.home-latest{border-top:1px solid var(--color-line)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:var(--space-4);margin-bottom:var(--space-5)}.section-heading h1,.section-heading h2{max-width:24ch;margin:0;font-family:Georgia,noto serif sc,songti sc,serif;font-size:clamp(1.65rem,3vw,2.35rem);letter-spacing:-.03em;line-height:1.15}.section-heading p{max-width:35rem;margin:0;color:var(--color-muted)}.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--space-3)}.topic-card{position:relative;min-height:11rem;padding:var(--space-4);overflow:hidden;color:var(--color-ink);border:1px solid var(--color-line);border-radius:var(--radius-lg);background:var(--color-surface);text-decoration:none}.topic-card:hover{color:inherit;border-color:var(--color-brand);transform:translateY(-2px);box-shadow:var(--shadow-soft)}.topic-number{display:block;margin-bottom:var(--space-4);opacity:.68;font-size:.78rem;font-weight:800;letter-spacing:.12em}.topic-card strong{display:block;max-width:15ch;font-family:Georgia,noto serif sc,serif;font-size:1.3rem;line-height:1.2}.topic-card 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var(--color-line);border-radius:var(--radius-lg);background:var(--color-surface)}.article-cover img{width:100%;max-height:38rem;object-fit:contain}.disclosure{margin:0 0 var(--space-4);padding:var(--space-3)var(--space-4);border-left:.35rem solid var(--color-warm);background:#fff4e7}.article-layout{display:grid;grid-template-columns:minmax(0,var(--reading))minmax(14rem,18rem);gap:clamp(2rem,6vw,5rem);align-items:start;justify-content:center}.article-body{min-width:0;padding-bottom:var(--space-7)}.article-body h2,.article-body h3,.article-body h4{scroll-margin-top:6rem;font-family:Georgia,noto serif sc,serif;line-height:1.2}.article-body h2{margin:3rem 0 1rem;font-size:clamp(1.55rem,3vw,2rem);letter-spacing:-.025em}.article-body h3{margin:2.2rem 0 .8rem;font-size:1.3rem}.article-body p,.article-body li{font-size:1.06rem}.article-body a{overflow-wrap:anywhere}.article-body img{margin-block:var(--space-4);border-radius:var(--radius-md)}.article-body 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code{padding:0;background:0 0}.affiliate-cta{margin:var(--space-2)var(--space-2)var(--space-3)0}.toc{position:sticky;top:6.5rem;padding:var(--space-3);border-left:1px solid var(--color-line);color:var(--color-muted);font-size:.86rem}.toc strong{color:var(--color-ink)}.toc nav>ul{padding-left:1rem}.toc a{color:inherit;text-decoration:none}.related{padding-block:var(--space-6);border-top:1px solid var(--color-line)}.pagination{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--space-2);margin:var(--space-5)0;padding:0;list-style:none}.page-item{display:block;margin:0}.page-link{display:inline-flex;min-width:2.6rem;min-height:2.6rem;align-items:center;justify-content:center;padding:.4rem .7rem;color:var(--color-brand);border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-surface);text-decoration:none}.page-link:hover{border-color:var(--color-brand);background:var(--color-surface-soft)}.page-item.active 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sc,serif;font-size:1.7rem}.footer-links{display:flex;flex-wrap:wrap;gap:var(--space-3);align-content:start;justify-content:end}.footer-links a{color:#d9e4dd}.footer-note{margin-top:var(--space-5);padding-top:var(--space-3);border-top:1px solid rgba(255,255,255,.14);font-size:.82rem}@media(max-width:900px){.desktop-nav{display:none}.mobile-nav{display:block}.mobile-nav summary{padding:.55rem .75rem;border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-surface);font-weight:700;cursor:pointer}.mobile-nav[open] .mobile-nav-panel{position:absolute;top:4.2rem;right:1rem;display:grid;min-width:14rem;padding:var(--space-2);border:1px solid var(--color-line);border-radius:var(--radius-md);background:var(--color-surface);box-shadow:var(--shadow-soft)}.mobile-nav-panel a{padding:.65rem .8rem;text-decoration:none}.home-intro-grid,.article-layout,.contact-layout{grid-template-columns:1fr}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.resource-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.toc{position:static;grid-row:1;border-left:0;border-bottom:1px solid var(--color-line)}}@media(max-width:620px){.shell{width:min(calc(100% - 1.25rem),var(--shell))}.nav-actions{display:none}.search-form,.section-heading{align-items:stretch;flex-direction:column}.pagination{gap:var(--space-1)}.page-link{min-width:2.35rem;min-height:2.35rem;padding-inline:.55rem}.topic-grid{grid-template-columns:1fr}.resource-grid,.footer-grid{grid-template-columns:1fr}.footer-links{justify-content:start}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important}}@media(forced-colors:active){.resource-card,.topic-card,.button{border:1px solid CanvasText}}