:root{--paper:#f7f4ee;--paper-deep:#eee9df;--white:#fffdf9;--ink:#1f302e;--forest:#174a43;--forest-dark:#103c37;--coral:#c7674e;--gold:#c99b46;--muted:#6d7772;--line:#d9d5cc;--line-dark:#b9b6ad;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:Georgia,"Times New Roman","Songti SC","SimSun",serif;line-height:1.75}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input{font:inherit}.container{width:min(var(--max),calc(100% - 56px));margin-inline:auto}
.site-header{background:var(--paper);border-bottom:1px solid var(--line-dark)}.header-inner{position:relative;min-height:106px;display:grid;grid-template-columns:250px 1fr;align-items:center;gap:36px}.brand{display:flex;align-items:center;gap:13px}.brand-mark{width:34px;height:38px;display:flex;align-items:flex-end;gap:4px;border-left:2px solid var(--coral);padding-left:7px}.brand-mark i{display:block;width:7px;background:var(--forest);transform:skewY(-22deg)}.brand-mark i:nth-child(1){height:17px}.brand-mark i:nth-child(2){height:27px}.brand-mark i:nth-child(3){height:37px}.brand strong{display:block;color:var(--forest);font-size:23px;line-height:1.05;letter-spacing:2px}.brand small{display:block;color:var(--muted);font-family:Arial,sans-serif;font-size:10px;letter-spacing:2px;margin-top:5px}.main-nav{display:flex;align-items:center;justify-content:flex-end;gap:5px}.main-nav a{font-family:Arial,"Microsoft YaHei",sans-serif;font-size:13px;color:var(--muted);padding:8px 11px;border:1px solid transparent;transition:all .2s ease}.main-nav a:hover,.main-nav a.active{color:var(--forest);border-color:var(--forest);background:rgba(255,253,249,.75)}.main-nav .search-link{font-size:21px;padding-inline:12px;color:var(--coral)}.menu-toggle{display:none;background:transparent;border:1px solid var(--forest);color:var(--forest);padding:8px 12px;font-family:Arial,sans-serif}
.eyebrow{font-family:Arial,"Microsoft YaHei",sans-serif;color:var(--coral);font-size:11px;letter-spacing:2.5px;font-weight:700;margin:0 0 13px}.button{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border:1px solid var(--forest);font-family:Arial,"Microsoft YaHei",sans-serif;font-size:13px;line-height:1.4;transition:all .2s ease}.button-primary{background:var(--forest);color:var(--white)}.button-primary:hover{background:var(--coral);border-color:var(--coral)}.button-light{background:var(--paper);color:var(--forest);border-color:var(--paper)}.text-link{font-family:Arial,"Microsoft YaHei",sans-serif;font-size:13px;color:var(--forest);border-bottom:1px solid var(--coral);padding-bottom:3px}.text-link span{margin-left:7px;color:var(--coral)}.meta-line,.category-label,.article-meta,.breadcrumbs,.list-date,.footer-links,.footer-bottom,.search-form,.search-summary,.keyword-cloud{font-family:Arial,"Microsoft YaHei",sans-serif}
.hero-section{background:var(--forest);color:var(--white);border-bottom:7px solid var(--coral)}.hero-grid{min-height:510px;display:grid;grid-template-columns:1fr 420px;align-items:center;gap:85px}.hero-copy{padding:62px 0}.hero-copy .eyebrow{color:#e4b46b}.hero-copy h1{font-size:clamp(35px,4.2vw,62px);line-height:1.12;letter-spacing:-1.5px;font-weight:400;margin:0 0 23px}.hero-copy h1 span{display:block;color:#b9cec7;font-family:Arial,"Microsoft YaHei",sans-serif;font-size:17px;letter-spacing:0;margin-top:15px}.hero-lead{max-width:560px;color:#d4e1dc;font-size:17px;margin:0 0 31px}.hero-actions{display:flex;align-items:center;gap:25px}.hero-actions .text-link{color:#e6c38b;border-bottom-color:#e6c38b}.hero-graphic{height:330px;position:relative;border:1px solid rgba(255,255,255,.3);background-color:#1a544b}.hero-graphic:before,.hero-graphic:after{content:"";position:absolute;background:rgba(255,255,255,.12)}.hero-graphic:before{width:1px;height:100%;left:33%;top:0}.hero-graphic:after{height:1px;width:100%;top:63%;left:0}.ladder-art{position:absolute;left:90px;top:45px;height:230px;width:190px;border-left:7px solid #e8b96c;border-right:7px solid #e8b96c;transform:skewY(-13deg)}.ladder-art span{position:absolute;left:0;right:0;height:5px;background:#f3e3c4}.ladder-art span:nth-child(1){top:45px}.ladder-art span:nth-child(2){top:105px}.ladder-art span:nth-child(3){top:165px}.ladder-art b{position:absolute;width:10px;height:10px;background:var(--coral);left:-9px}.ladder-art b:nth-of-type(1){top:36px}.ladder-art b:nth-of-type(2){top:96px;left:auto;right:-9px}.ladder-art b:nth-of-type(3){top:156px}.graphic-note{position:absolute;right:20px;bottom:18px;color:#d4e1dc;font-family:Arial,sans-serif;font-size:11px;letter-spacing:2px}
.entry-section,.latest-section,.faq-section{padding:88px 0}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:31px;border-bottom:2px solid var(--forest);padding-bottom:14px}.section-heading h2{font-size:29px;line-height:1.25;margin:0;font-weight:400;color:var(--forest)}.section-heading>p{color:var(--muted);margin:0;max-width:320px;font-size:14px}.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line-dark)}.entry-item{position:relative;min-height:184px;padding:25px 28px 30px;border-top:1px solid var(--line-dark);border-right:1px solid var(--line-dark);transition:background .2s ease}.entry-item:last-child{border-right:0}.entry-item:hover{background:var(--white)}.entry-index{font-family:Arial,sans-serif;color:var(--coral);font-size:12px;font-weight:700}.entry-item h3{font-size:22px;font-weight:400;margin:18px 0 8px;color:var(--forest)}.entry-item p{color:var(--muted);font-size:14px;margin:0;max-width:250px}.arrow{position:absolute;right:26px;bottom:22px;color:var(--coral);font-family:Arial,sans-serif;font-size:21px}.soft-section{background:var(--paper-deep);padding:82px 0}.featured-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:24px}.feature-card{background:var(--white);border:1px solid var(--line-dark)}.feature-card:first-child{grid-row:span 2}.feature-card img{width:100%;aspect-ratio:1.75;object-fit:cover;filter:saturate(.75)}.feature-card:first-child img{aspect-ratio:1.3}.feature-body{padding:22px 23px 25px}.meta-line{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:11px}.meta-line span,.category-label{color:var(--coral);font-size:11px}.feature-body h3{font-size:20px;line-height:1.4;margin:13px 0 10px;font-weight:400;color:var(--forest)}.feature-body p,.list-row p{color:var(--muted);font-size:13px;margin:0}.read-link{display:inline-block;margin-top:17px;color:var(--forest);font-family:Arial,sans-serif;font-size:12px;border-bottom:1px solid var(--coral)}.compact-list,.article-list{border-top:2px solid var(--forest)}.list-row{display:grid;grid-template-columns:74px 1fr 24px;gap:22px;align-items:start;padding:23px 0;border-bottom:1px solid var(--line-dark)}.list-date{font-size:12px;color:var(--coral);padding-top:5px}.list-row h3,.list-row h2{font-size:19px;line-height:1.4;margin:4px 0 6px;font-weight:400;color:var(--forest)}.row-arrow{color:var(--coral);font-family:Arial,sans-serif;font-size:18px;padding-top:13px}
.knowledge-band{background:var(--coral);color:var(--white);padding:77px 0}.knowledge-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:85px;align-items:center}.knowledge-grid h2{font-size:33px;line-height:1.25;font-weight:400;margin:0 0 14px}.knowledge-grid>div>p:not(.eyebrow){color:#f9e3d5;max-width:520px;margin:0 0 25px;font-size:15px}.knowledge-grid .eyebrow{color:#f6cf8f}.knowledge-points{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid rgba(255,255,255,.55);border-bottom:1px solid rgba(255,255,255,.55)}.knowledge-points div{padding:21px 14px;border-right:1px solid rgba(255,255,255,.35)}.knowledge-points div:last-child{border-right:0}.knowledge-points b{display:block;color:#f7d395;font-family:Arial,sans-serif;font-size:12px}.knowledge-points span{display:block;margin:15px 0 4px;font-size:17px}.knowledge-points p{font-size:12px;color:#f9e3d5;margin:0}.faq-list{border-top:2px solid var(--forest)}details{border-bottom:1px solid var(--line-dark)}summary{list-style:none;cursor:pointer;padding:19px 0;font-size:16px;display:flex;justify-content:space-between;gap:15px;color:var(--forest)}summary::-webkit-details-marker{display:none}summary span{color:var(--coral);font-family:Arial,sans-serif;font-size:20px}.faq-list p,.article-faq p{color:var(--muted);font-size:14px;margin:0 0 20px}
.site-footer{background:var(--forest-dark);color:#e9f0ec;padding:54px 0 21px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px}.footer-brand{font-size:22px;letter-spacing:2px}.footer-grid p{max-width:350px;color:#afc2ba;font-size:13px}.footer-grid h2{color:#f1d29c;font-family:Arial,sans-serif;font-size:12px;letter-spacing:1px;margin:4px 0 13px}.footer-links{display:flex;flex-direction:column;gap:7px;color:#c0d0c9;font-size:12px}.footer-links a:hover{color:#f1d29c}.footer-bottom{border-top:1px solid rgba(255,255,255,.2);margin-top:37px;padding-top:17px;color:#9eb2aa;font-size:11px}
.page-head{background:var(--paper-deep);border-bottom:1px solid var(--line-dark);padding:60px 0 54px}.breadcrumbs{display:flex;gap:10px;color:var(--muted);font-size:11px;margin-bottom:30px}.breadcrumbs a:hover{color:var(--coral)}.page-head h1{font-size:43px;font-weight:400;line-height:1.2;color:var(--forest);margin:0 0 12px}.page-head>div>p:last-child{color:var(--muted);margin:0;max-width:650px}.category-content,.search-content{padding:44px 0 92px}.category-intro{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:20px}.category-intro p,.search-summary{font-size:13px;color:var(--muted);margin:0}.count-badge{border:1px solid var(--forest);color:var(--forest);font-family:Arial,sans-serif;font-size:11px;padding:5px 11px}.list-row-image{grid-template-columns:190px 1fr 24px;align-items:center}.list-row-image img{width:190px;aspect-ratio:1.7;object-fit:cover;background:var(--paper-deep);filter:saturate(.7)}.list-row-image h2{margin-top:8px}
.article-page{padding:35px 0 90px}.article-layout{display:grid;grid-template-columns:minmax(0,820px) 220px;gap:70px}.article-header h1{font-size:47px;line-height:1.2;letter-spacing:-.5px;font-weight:400;color:var(--forest);margin:13px 0}.article-meta{display:flex;gap:9px;color:var(--muted);font-size:11px}.article-excerpt{font-size:18px;color:#61706b;line-height:1.8;margin:24px 0 30px}.article-cover{width:100%;aspect-ratio:1.9;object-fit:cover;background:var(--paper-deep);filter:saturate(.7)}.article-content{font-size:16px;padding-top:35px}.article-content h2{font-size:25px;color:var(--forest);font-weight:400;margin:37px 0 12px}.article-content p{margin:0 0 18px}.article-content ul{padding-left:22px;color:#53635d}.notice-box{border-left:4px solid var(--coral);background:#fbebe4;padding:16px 18px;margin-top:32px}.notice-box strong{font-family:Arial,sans-serif;font-size:13px;color:var(--coral)}.notice-box p{font-size:13px;color:#775e56;margin:4px 0 0}.toc-box,.aside-related{border-top:2px solid var(--forest);padding-top:12px;margin-top:70px}.toc-box strong,.aside-related strong{font-family:Arial,sans-serif;font-size:12px;color:var(--forest)}.toc-box ol{color:var(--muted);font-size:12px;padding-left:19px;line-height:2.1}.aside-related{margin-top:38px}.aside-related a{display:block;font-size:12px;padding:12px 0;border-bottom:1px solid var(--line);line-height:1.5}.article-faq{margin-top:47px}.article-faq h2{font-size:23px;font-weight:400;color:var(--forest)}.article-nav{border-top:1px solid var(--line-dark);display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:51px;padding-top:21px}.article-nav a{display:flex;flex-direction:column;gap:5px}.article-nav small{font-family:Arial,sans-serif;font-size:10px;color:var(--muted)}.article-nav span{font-size:14px;color:var(--forest)}.article-nav .next{text-align:right}
.search-form{display:flex;max-width:680px;margin-top:26px}.search-form input{flex:1;border:1px solid var(--line-dark);background:var(--white);padding:13px 15px;font-size:14px;min-width:0;color:var(--ink)}.search-form input:focus{outline:2px solid var(--gold);outline-offset:2px}.search-form button{border:0;background:var(--forest);color:var(--white);padding:0 25px;cursor:pointer;font-size:13px}.search-form button:hover{background:var(--coral)}.search-summary{margin-bottom:21px}.empty-state{border:1px solid var(--line-dark);background:var(--white);padding:50px 30px;text-align:center}.empty-state h2{margin:0 0 7px;color:var(--forest);font-size:24px;font-weight:400}.empty-state p{color:var(--muted);margin:0}.keyword-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:27px}.keyword-cloud a{border:1px solid var(--line-dark);background:var(--white);padding:6px 11px;color:var(--muted);font-size:11px}.keyword-cloud a:hover{border-color:var(--coral);color:var(--coral)}.not-found{padding:130px 0;text-align:center}.not-found h1{font-size:43px;font-weight:400;color:var(--forest);margin:0 0 10px}.not-found p{color:var(--muted);margin:0 0 29px}.not-found .text-link{margin-left:24px}
@media(max-width:920px){.header-inner{grid-template-columns:200px 1fr;gap:15px}.main-nav{gap:0}.main-nav a{padding-inline:7px}.hero-grid{grid-template-columns:1fr 310px;gap:35px}.article-layout{grid-template-columns:minmax(0,1fr) 190px;gap:35px}}
@media(max-width:720px){.container{width:min(100% - 30px,var(--max))}.header-inner{min-height:74px;display:flex;justify-content:space-between}.menu-toggle{display:block}.main-nav{display:none;position:absolute;left:0;right:0;top:73px;background:var(--paper);border:1px solid var(--line-dark);z-index:5;padding:9px 16px;flex-direction:column;align-items:stretch;gap:0;box-shadow:0 8px 18px rgba(31,48,46,.12)}.main-nav.open{display:flex}.main-nav a{padding:11px 0;border-bottom:1px solid var(--line)}.main-nav a:last-child{border-bottom:0}.hero-grid{display:block;min-height:auto}.hero-copy{padding:57px 0 37px}.hero-copy h1{font-size:39px}.hero-lead{font-size:15px}.hero-graphic{height:210px;margin:14px 0 45px}.ladder-art{left:calc(50% - 80px);top:28px;height:140px;width:150px}.ladder-art span:nth-child(1){top:28px}.ladder-art span:nth-child(2){top:63px}.ladder-art span:nth-child(3){top:98px}.ladder-art b:nth-of-type(1){top:19px}.ladder-art b:nth-of-type(2){top:54px}.ladder-art b:nth-of-type(3){top:89px}.entry-section,.latest-section,.faq-section{padding:59px 0}.section-heading{display:block;margin-bottom:23px}.section-heading>p{margin-top:11px}.entry-grid,.featured-grid,.knowledge-grid,.footer-grid{grid-template-columns:1fr}.entry-item{border-right:0}.entry-item:last-child{border-bottom:0}.featured-grid{gap:17px}.feature-card:first-child{grid-row:auto}.feature-card:first-child img{aspect-ratio:1.75}.knowledge-grid{gap:40px}.site-footer{padding-top:40px}.footer-grid{gap:26px}.page-head{padding:43px 0 37px}.page-head h1{font-size:34px}.category-content,.search-content{padding:30px 0 64px}.list-row-image{grid-template-columns:100px 1fr;gap:14px}.list-row-image img{width:100px}.list-row-image .row-arrow{display:none}.list-row-image h2{font-size:17px}.list-row-image p{display:none}.article-page{padding-top:23px}.article-layout{display:block}.article-header h1{font-size:34px}.article-excerpt{font-size:16px}.article-aside{display:none}.article-content{font-size:15px}.article-content h2{font-size:22px}.article-nav{grid-template-columns:1fr}.article-nav .next{text-align:left}.search-form button{padding:0 18px}.not-found{padding:95px 0}.not-found h1{font-size:34px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}