:root{--bg:#f6f2ec;--paper:#fffdf9;--ink:#171615;--muted:#716c66;--line:#d8d1c8;--accent:#6b1730;--accent2:#efe3e7;--max:1180px;--narrow:820px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75}.container{max-width:var(--max);margin:auto;padding:0 24px}.narrow{max-width:var(--narrow)}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-header{position:sticky;top:0;z-index:20;background:rgba(246,242,236,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.header-inner{min-height:76px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;margin-right:auto}.brand-icon{width:42px;height:42px;border-radius:11px;object-fit:cover;box-shadow:0 4px 16px rgba(34,12,19,.16)}.brand-word{font-family:Georgia,"Times New Roman",serif;font-weight:800;font-size:30px;letter-spacing:-1px}.brand-sub{font-size:12px;color:var(--muted);max-width:180px;line-height:1.2}.main-nav{display:flex;gap:18px;font-size:14px}.main-nav a:hover{color:var(--accent)}.site-search{display:flex}.site-search input,.search-large input{border:1px solid var(--line);background:var(--paper);padding:9px 12px;border-radius:10px 0 0 10px;min-width:150px}.site-search button,.search-large button{border:0;background:var(--ink);color:#fff;padding:9px 12px;border-radius:0 10px 10px 0}.hero{padding:90px 0 70px;border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(300px,.7fr);gap:70px;align-items:end}.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:800}.hero h1,.page-head h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(42px,6vw,78px);line-height:1.03;letter-spacing:-.035em;margin:16px 0 24px}.hero p{font-size:19px;max-width:760px;color:#47413c}.hero-note{background:var(--ink);color:#fff;padding:28px;border-radius:18px}.hero-note ul{padding-left:20px;color:#ddd4cc}.hero-actions{display:flex;gap:12px;margin-top:30px}.btn{display:inline-block;border:1px solid var(--line);padding:11px 16px;border-radius:999px;font-weight:700;background:var(--paper)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.ghost{background:transparent}.section{padding:68px 0}.section.muted{background:#ece6de;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.section-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:28px}.section-head h2{font:700 36px/1.1 Georgia,serif;margin:8px 0 0}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{background:var(--paper);border:1px solid var(--line);border-radius:16px;overflow:hidden}.card img{width:100%;aspect-ratio:16/10;object-fit:cover}.card-body{padding:20px}.card h2,.card h3{font:700 24px/1.2 Georgia,serif;margin:8px 0 10px}.card p{color:#59534d}.meta{font-size:12px;color:var(--muted)}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.topic-card{background:var(--paper);border:1px solid var(--line);padding:24px;border-radius:16px}.topic-card:hover{border-color:var(--accent)}.topic-card h3{font:700 25px/1.1 Georgia,serif;margin:6px 0}.topic-count{font-size:12px;color:var(--accent)}.list-stack{border-top:1px solid var(--line)}.list-row{display:grid;grid-template-columns:1fr 1.4fr;gap:24px;padding:18px 0;border-bottom:1px solid var(--line)}.list-row strong{font:700 20px/1.25 Georgia,serif}.list-row span{color:var(--muted)}.page-head{padding:72px 0 40px}.page-head p{font-size:18px;color:var(--muted)}.article-wrap{padding:56px 0 80px}.article-grid-layout{display:grid;grid-template-columns:230px minmax(0,780px);gap:55px;justify-content:center}.article-side{position:relative}.back-link{font-size:13px;color:var(--muted)}.toc{position:sticky;top:110px;margin-top:30px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px;font-size:13px}.toc strong{margin-bottom:6px}.toc a{color:var(--muted)}.toc .toc-l3{padding-left:14px}.article-header h1{font:700 clamp(40px,5vw,64px)/1.05 Georgia,serif;letter-spacing:-.025em;margin:12px 0 18px}.dek{font-size:20px;color:#514b45}.byline{display:flex;flex-wrap:wrap;gap:10px 18px;color:var(--muted);font-size:12px;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.cover{margin:30px 0}.cover img{width:100%;border-radius:14px}.cover figcaption{font-size:12px;color:var(--muted);margin-top:8px}.answer-box{background:var(--accent2);border-left:4px solid var(--accent);padding:22px 24px;margin:28px 0;border-radius:0 14px 14px 0}.answer-box span{font-size:12px;font-weight:800;letter-spacing:.1em;color:var(--accent)}.answer-box p{font-size:18px;margin:8px 0 0}.key-box{border:1px solid var(--line);background:var(--paper);padding:22px 28px;border-radius:14px;margin:28px 0}.key-box h2{font:700 24px Georgia,serif;margin-top:0}.prose{font-size:18px}.prose h2{font:700 34px/1.18 Georgia,serif;margin:48px 0 16px;scroll-margin-top:110px}.prose h3{font:700 25px/1.25 Georgia,serif;margin:34px 0 12px;scroll-margin-top:110px}.prose p{margin:0 0 20px}.prose blockquote{border-left:3px solid var(--accent);margin:28px 0;padding:10px 20px;color:#544d46;background:#f0ebe5}.prose table{width:100%;border-collapse:collapse;margin:26px 0;background:var(--paper);font-size:15px}.prose th,.prose td{border:1px solid var(--line);padding:10px;text-align:left}.prose a,.sources a{color:var(--accent);text-decoration:underline}.faq,.sources,.editorial-note,.related{margin-top:50px}.faq h2,.sources h2,.related h2{font:700 30px Georgia,serif}.faq details{border-top:1px solid var(--line);padding:15px 0}.faq details:last-child{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;font-weight:700}.editorial-note{font-size:14px;color:var(--muted);background:#ebe5dd;padding:20px;border-radius:12px}.pagination-wrap{margin-top:32px}.pagination-wrap nav{display:flex;gap:8px;align-items:center;justify-content:center}.pagination-wrap svg{width:18px;height:18px}.pagination-wrap a,.pagination-wrap span{padding:6px 10px}.search-large{display:flex;max-width:620px}.search-large input{flex:1}.site-footer{border-top:1px solid var(--line);padding:40px 0;background:#ede7df}.footer-grid{display:grid;grid-template-columns:1fr auto;gap:40px}.footer-brand{display:flex;align-items:flex-start;gap:12px}.footer-brand>img{width:42px;height:42px;border-radius:10px;object-fit:cover}.footer-grid p{max-width:660px;color:var(--muted)}.footer-links{display:flex;gap:14px;flex-wrap:wrap;font-size:13px}.footer-links a:hover{color:var(--accent)}@media(max-width:960px){.main-nav{display:none}.site-search{display:none}.hero-grid,.article-grid-layout{grid-template-columns:1fr}.hero-note{max-width:600px}.article-side{display:none}.article-grid,.topic-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.container{padding:0 16px}.header-inner{min-height:66px}.brand-sub{display:none}.hero{padding:55px 0}.hero h1,.page-head h1{font-size:42px}.article-grid,.topic-grid{grid-template-columns:1fr}.list-row{grid-template-columns:1fr;gap:5px}.article-wrap{padding-top:30px}.article-header h1{font-size:40px}.prose{font-size:17px}.prose h2{font-size:29px}.footer-grid{grid-template-columns:1fr}}
.author-box{margin-top:50px;padding:22px;border:1px solid var(--line);background:var(--paper);border-radius:14px}.author-box strong{font:700 20px Georgia,serif}.author-box span{display:block;color:var(--muted);font-size:13px;margin-top:3px}.author-box p{margin:10px 0;color:#514b45}.author-box a{color:var(--accent);font-size:13px;text-decoration:underline}

/* v2.1.4 Mobile Reading & Touch Polish */
:root{
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
  --serif:ui-serif,"Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --tap:rgba(107,23,48,.12);
}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:92px}
body{font-family:var(--sans);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}
.hero h1,.page-head h1,.section-head h2,.card h2,.card h3,.topic-card h3,.list-row strong,.article-header h1,.key-box h2,.prose h2,.prose h3,.faq h2,.sources h2,.related h2,.author-box strong{font-family:var(--serif)}
h1,h2,h3{text-wrap:balance}.prose p,.dek{text-wrap:pretty}
a,button,summary,.btn,.topic-card,.list-row{touch-action:manipulation;-webkit-tap-highlight-color:var(--tap)}
a,button,summary,.btn,.topic-card,.list-row,.card{transition:transform .12s ease,background-color .12s ease,border-color .12s ease,box-shadow .12s ease,opacity .12s ease}
button,.btn{min-height:44px}.btn{display:inline-flex;align-items:center;justify-content:center}
:focus-visible{outline:3px solid rgba(107,23,48,.34);outline-offset:3px;border-radius:6px}
.btn:active,.topic-card:active,.list-row:active,.faq summary:active,.tap-pressed{transform:scale(.985)}
.btn:active{opacity:.92}.topic-card:active,.list-row:active{background:#f4eaed}.prose a:active,.sources a:active{background:var(--accent2)}
.faq details[open] summary{color:var(--accent)}
.prose a,.sources a{text-underline-offset:3px;text-decoration-thickness:1px}
.byline{font-variant-numeric:tabular-nums}

@media(hover:hover){
  .btn:hover{border-color:var(--accent);box-shadow:0 5px 18px rgba(55,27,34,.08)}
  .btn.primary:hover{filter:brightness(.96)}
  .card:hover{border-color:#c8b8bc;box-shadow:0 9px 28px rgba(45,30,34,.07);transform:translateY(-2px)}
  .list-row:hover{background:rgba(255,253,249,.55)}
  .faq summary:hover{color:var(--accent)}
}

@media(max-width:640px){
  body{font-size:16px;line-height:1.8}
  .container{padding-left:18px;padding-right:18px}
  .site-header{backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
  .header-inner{min-height:62px;gap:12px}
  .brand{gap:9px;min-width:0}
  .brand-icon{width:38px;height:38px;border-radius:10px}
  .brand-word{font-size:27px;letter-spacing:-.6px}
  .hero{padding:46px 0 50px}
  .hero h1,.page-head h1{font-size:clamp(36px,10vw,42px);line-height:1.08;letter-spacing:-.018em;margin:12px 0 18px}
  .hero p,.page-head p{font-size:17px;line-height:1.78}
  .hero-actions{gap:10px;flex-wrap:wrap;margin-top:24px}
  .btn{padding:10px 15px}
  .section{padding:50px 0}
  .section-head{margin-bottom:22px}
  .section-head h2{font-size:30px}
  .card-body{padding:18px}
  .card h2,.card h3{font-size:22px;line-height:1.3;margin-top:7px}
  .card p{line-height:1.72;margin-bottom:12px}
  .topic-card{padding:20px;min-height:44px}
  .topic-card h3{font-size:23px;line-height:1.22}
  .list-row{padding:16px 4px;min-height:52px}
  .list-row strong{font-size:20px;line-height:1.38}
  .list-row span{font-size:15px;line-height:1.65}

  .article-wrap{padding:24px 0 58px}
  .article-header .eyebrow{font-size:11px;letter-spacing:.13em}
  .article-header h1{font-size:clamp(30px,8.7vw,36px);line-height:1.16;letter-spacing:-.008em;margin:10px 0 14px}
  .dek{font-size:17px;line-height:1.78;margin:0 0 18px}
  .byline{gap:6px 12px;padding:12px 0;font-size:12px;line-height:1.55}
  .cover{margin:22px 0}.cover img{border-radius:12px}
  .answer-box{margin:22px 0;padding:18px 18px;border-left-width:3px;border-radius:0 12px 12px 0}
  .answer-box p{font-size:16.5px;line-height:1.82;margin-top:6px}
  .key-box{padding:18px 20px;margin:22px 0;border-radius:12px}
  .key-box h2{font-size:23px;line-height:1.28;margin-bottom:12px}
  .key-box ul{padding-left:21px;margin-bottom:0}.key-box li{margin:7px 0}
  .prose{font-size:17px;line-height:1.9;letter-spacing:.005em;overflow-wrap:anywhere;word-break:normal}
  .prose p{margin-bottom:1.12em}
  .prose h2{font-size:27px;line-height:1.32;letter-spacing:0;margin:40px 0 14px;scroll-margin-top:86px}
  .prose h3{font-size:21px;line-height:1.42;letter-spacing:0;margin:28px 0 10px;scroll-margin-top:86px}
  .prose ul,.prose ol{padding-left:1.35em}.prose li{margin:.38em 0}
  .prose blockquote{margin:22px 0;padding:11px 16px;line-height:1.82}
  .prose table{display:block;width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap;font-size:14px;margin:22px 0;border-collapse:separate;border-spacing:0}
  .prose th,.prose td{padding:9px 10px}
  .faq,.sources,.editorial-note,.related,.author-box{margin-top:42px}
  .faq h2,.sources h2,.related h2{font-size:27px;line-height:1.3}
  .faq details{padding:0}
  .faq summary{display:flex;align-items:center;min-height:52px;padding:13px 3px;line-height:1.55}
  .faq details>div{padding:0 3px 16px;line-height:1.82}
  .sources ol{padding-left:22px}.sources li{margin:0 0 12px;line-height:1.7}
  .editorial-note{padding:17px 18px;line-height:1.72}
  .author-box{padding:18px}
  .related .article-grid{gap:14px}
  .footer-grid{gap:24px}.site-footer{padding:34px 0 calc(34px + env(safe-area-inset-bottom))}
  .footer-links{gap:8px 14px;line-height:1.8}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}

.breadcrumbs{font-size:14px;line-height:1.8;margin:24px 0;overflow-wrap:anywhere}
.article-toc{padding:16px 20px;border:1px solid var(--line);border-radius:12px;margin:24px 0}
.article-toc summary{cursor:pointer;font-weight:700;min-height:44px;display:flex;align-items:center}
.article-toc nav{display:grid;gap:6px}.article-toc a{padding:5px 0;overflow-wrap:anywhere}
.article-toc .toc-l3{padding-left:18px;font-size:.92em}
.prose h2[id],.prose h3[id],.sources li[id]{scroll-margin-top:100px}
/* v2.1.5 True Responsive Layout Hotfix */
html,body{width:100%;max-width:100%;overflow-x:hidden}
body{min-width:0}
.container{width:100%;min-width:0}
main,section,article,aside,header,footer,nav,form,.hero-grid>*,.article-grid-layout>*,.article-main,.card,.card-body,.topic-card,.list-row>*{min-width:0}
.prose,.dek,.card p,.topic-card p,.list-row span,.footer-grid p{overflow-wrap:anywhere;word-break:break-word}
.prose pre,.prose code{max-width:100%}.prose pre{overflow-x:auto;-webkit-overflow-scrolling:touch}
.prose iframe,.prose video,.prose embed,.prose object{max-width:100%;width:100%}
.mobile-menu-toggle,.mobile-nav{display:none}

@media(max-width:768px){
  :root{--mobile-pad:16px}
  .container{max-width:none;padding-left:var(--mobile-pad);padding-right:var(--mobile-pad)}
  .site-header{position:sticky;top:0}
  .header-inner{width:100%;min-height:60px;gap:10px;padding-top:7px;padding-bottom:7px}
  .brand{flex:1 1 auto;max-width:calc(100% - 54px);overflow:hidden}
  .brand-icon{flex:0 0 auto;width:36px;height:36px}
  .brand-word{font-size:25px;white-space:nowrap}
  .brand-sub{display:none}
  .main-nav,.site-search{display:none!important}
  .mobile-menu-toggle{display:inline-flex;flex:0 0 44px;width:44px;height:44px;min-height:44px;padding:0;border:1px solid var(--line);border-radius:12px;background:var(--paper);align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer}
  .mobile-menu-toggle span{display:block;width:19px;height:2px;background:var(--ink);border-radius:99px;transition:transform .18s ease,opacity .18s ease}
  .mobile-menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .mobile-menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .mobile-menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
  .mobile-nav{display:block;border-top:1px solid var(--line);background:rgba(246,242,236,.985)}
  .mobile-nav[hidden]{display:none!important}
  .mobile-nav-inner{padding-top:12px;padding-bottom:16px}
  .mobile-nav nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .mobile-nav nav a{display:flex;align-items:center;min-height:44px;padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:var(--paper);font-size:14px}
  .mobile-search{display:grid;grid-template-columns:minmax(0,1fr) auto;margin-top:10px;width:100%}
  .mobile-search input{width:100%;min-width:0;height:44px;border:1px solid var(--line);border-radius:10px 0 0 10px;background:var(--paper);padding:0 12px;font-size:16px}
  .mobile-search button{height:44px;border:0;border-radius:0 10px 10px 0;background:var(--ink);color:#fff;padding:0 16px}

  .hero{padding:38px 0 42px}
  .hero-grid{display:grid!important;grid-template-columns:minmax(0,1fr)!important;gap:24px!important}
  .hero h1,.page-head h1{font-size:clamp(32px,9vw,40px)!important;line-height:1.12!important;letter-spacing:-.012em!important}
  .hero p,.page-head p{font-size:16.5px;line-height:1.75}
  .hero-note{width:100%;max-width:none;padding:20px;border-radius:14px}
  .hero-actions{display:grid;grid-template-columns:1fr;gap:10px}
  .hero-actions .btn{width:100%}

  .section{padding:44px 0}
  .section-head{display:block;margin-bottom:20px}
  .section-head h2{font-size:28px;line-height:1.25}
  .article-grid,.topic-grid{display:grid!important;grid-template-columns:minmax(0,1fr)!important;gap:14px!important}
  .card,.topic-card{width:100%;max-width:100%}
  .card-body{padding:17px}
  .card h2,.card h3{font-size:21px;line-height:1.35}
  .topic-card{padding:18px}
  .list-row{display:grid!important;grid-template-columns:minmax(0,1fr)!important;gap:6px!important;width:100%}

  .page-head{padding:42px 0 20px}
  .article-wrap{padding:20px 0 52px}
  .article-grid-layout{display:block!important;width:100%;max-width:100%}
  .article-side{display:none!important}
  .article-main{width:100%;max-width:100%;min-width:0}
  .article-header h1{font-size:clamp(29px,8.5vw,36px)!important;line-height:1.18!important;margin:8px 0 12px!important}
  .dek{font-size:16.5px;line-height:1.78}
  .byline{gap:5px 10px}
  .cover,.cover img{width:100%;max-width:100%}
  .answer-box,.key-box,.editorial-note,.author-box{width:100%;max-width:100%}
  .answer-box{padding:16px 16px}
  .answer-box p{font-size:16px;line-height:1.78}
  .key-box{padding:16px 18px}
  .prose{width:100%;max-width:100%;font-size:16.5px;line-height:1.88}
  .prose h2{font-size:25px!important;line-height:1.34!important;margin-top:36px!important}
  .prose h3{font-size:20px!important;line-height:1.42!important;margin-top:26px!important}
  .prose ul,.prose ol{padding-left:1.25em}
  .prose table{display:block!important;width:100%!important;max-width:100%!important;overflow-x:auto!important;-webkit-overflow-scrolling:touch;white-space:nowrap}
  .prose img{height:auto!important;max-width:100%!important}
  .faq summary{min-height:50px;padding:12px 2px}
  .related .article-grid{grid-template-columns:minmax(0,1fr)!important}

  .search-large{display:grid;width:100%;max-width:100%;grid-template-columns:minmax(0,1fr) auto}
  .search-large input{width:100%;min-width:0;font-size:16px}
  .footer-grid{display:grid!important;grid-template-columns:minmax(0,1fr)!important;gap:22px!important}
  .footer-brand{min-width:0}.footer-links{gap:8px 12px}
}

@media(max-width:390px){
  :root{--mobile-pad:14px}
  .brand-word{font-size:23px}
  .hero h1,.page-head h1{font-size:32px!important}
  .article-header h1{font-size:29px!important}
  .mobile-nav nav{grid-template-columns:1fr}
}