@charset "UTF-8";
:root{--c-primary:#C85C3A;--c-accent:#E6B85C;--c-deep:#2B2523;--c-bg:#FAF7F2;--c-soft:#F1EAE2;--c-text:#332E2B;--c-muted:#766C66;--c-hot:#D94A32;--c-line:#ded2c7;--c-white:#fffdf9;--shadow:0 18px 45px rgba(77,54,42,.09);--radius:22px;--content:1180px;--narrow:840px;--pad:clamp(20px,4vw,56px)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--c-bg);color:var(--c-text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}body.modal-open{overflow:hidden}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}button,input{font:inherit}button{cursor:pointer}.skip-link{position:fixed;left:16px;top:-80px;z-index:9999;background:var(--c-deep);color:#fff;padding:10px 16px;border-radius:8px}.skip-link:focus{top:16px}.site-header{position:sticky;top:0;z-index:100;background:rgba(250,247,242,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(43,37,35,.08)}.header-inner{max-width:var(--content);margin:auto;min-height:82px;padding:10px var(--pad);display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:28px}.brand-lockup{display:flex;gap:12px;align-items:center;text-decoration:none;min-width:max-content}.brand-lockup img{width:46px;height:46px;object-fit:contain;border-radius:12px}.brand-lockup span{display:grid;line-height:1.2}.brand-lockup strong{font-size:20px;letter-spacing:.04em}.brand-lockup small{font-size:11px;color:var(--c-muted);margin-top:5px}.primary-nav{display:flex;gap:6px;justify-content:center;flex-wrap:wrap}.nav-link{padding:9px 12px;border-radius:999px;text-decoration:none;font-size:14px;color:#4c433e}.nav-link:hover,.nav-link.is-active{background:var(--c-soft);color:var(--c-primary)}.search-trigger,.menu-toggle{border:1px solid var(--c-line);background:var(--c-white);border-radius:999px;padding:9px 14px;color:var(--c-deep)}.menu-toggle{display:none}.menu-toggle b{font-size:12px;font-weight:600}.search-modal[hidden]{display:none!important}.search-modal{position:fixed;inset:0;z-index:1000;display:grid;place-items:start center;padding:12vh 20px 30px}.search-backdrop{position:absolute;inset:0;background:rgba(32,27,25,.62)}.search-dialog{position:relative;width:min(680px,100%);background:var(--c-bg);border-radius:24px;padding:34px;box-shadow:0 30px 90px rgba(0,0,0,.28)}.search-close{position:absolute;right:18px;top:14px;border:0;background:transparent;font-size:28px;color:var(--c-muted)}.search-form label,.inline-search label,.search-page-form label{display:block;font-weight:700;margin-bottom:8px}.search-fields,.inline-search>div,.search-page-form>div{display:flex;gap:8px}.search-fields input,.inline-search input,.search-page-form input{flex:1;min-width:0;border:1px solid var(--c-line);background:#fff;border-radius:12px;padding:13px 14px;outline:none}.search-fields input:focus,.inline-search input:focus,.search-page-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(200,92,58,.12)}.search-fields button,.inline-search button,.search-page-form button{border:0;border-radius:12px;background:var(--c-primary);color:#fff;padding:0 20px;font-weight:700}.search-note{color:var(--c-muted);font-size:13px}.home-main,.page-shell,.article-shell{max-width:var(--content);margin:0 auto;padding:0 var(--pad)}.narrow-shell{max-width:980px}.section-pad{padding-top:clamp(54px,7vw,92px);padding-bottom:clamp(54px,7vw,92px)}.eyebrow{margin:0 0 12px;text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:800;color:var(--c-primary)}h1,h2,h3{font-family:"Songti SC","STSong",Georgia,serif;color:var(--c-deep);line-height:1.25;margin-top:0}h1{font-size:clamp(38px,6vw,72px);letter-spacing:-.035em;margin-bottom:22px}h2{font-size:clamp(27px,4vw,44px);letter-spacing:-.025em;margin-bottom:18px}h3{font-size:20px;margin-bottom:10px}.lead{font-size:clamp(17px,2vw,21px);color:#574c46;line-height:1.85}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:9px 18px;border-radius:999px;background:var(--c-primary);color:#fff;text-decoration:none;font-weight:700;border:1px solid transparent}.button:hover{background:#a9492d}.text-link{font-weight:700;color:var(--c-primary)}.text-button{border:0;background:none;color:var(--c-primary);font-weight:700;text-decoration:underline;text-underline-offset:4px;padding:8px}.link-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.home-intro{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(340px,.92fr);gap:clamp(28px,5vw,72px);align-items:center;padding:clamp(54px,7vw,98px) 0 56px}.intro-copy .lead{max-width:760px}.intro-figure{margin:0;position:relative}.intro-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:38px 12px 38px 12px;box-shadow:var(--shadow)}.intro-figure figcaption{width:88%;margin:-24px auto 0;position:relative;background:var(--c-white);padding:14px 18px;border:1px solid var(--c-line);border-radius:14px;font-size:13px;color:var(--c-muted)}.home-route-line{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:28px;font-size:14px}.home-route-line span{font-weight:800;color:var(--c-deep)}.home-route-line i{font-style:normal;color:#a99a91}.home-route-line a{color:var(--c-primary);font-weight:700}.section-heading{max-width:840px;margin-bottom:34px}.section-heading>p{color:var(--c-muted)}.split-heading{max-width:none;display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.7fr);gap:40px;align-items:end}.route-rows{border-top:1px solid var(--c-line)}.route-rows article{display:grid;grid-template-columns:64px 1fr minmax(170px,.35fr);gap:24px;align-items:center;padding:24px 0;border-bottom:1px solid var(--c-line)}.route-rows h3{margin:0 0 5px;font-size:22px}.route-rows p{margin:0;color:var(--c-muted)}.route-no{font-family:Georgia,serif;font-size:22px;color:var(--c-primary)}.route-rows article>a{justify-self:end;color:var(--c-primary);font-weight:700;text-align:right}.route-rows article>strong{justify-self:end;font-size:13px;color:var(--c-muted)}.warm-panel,.soft-panel{border-radius:var(--radius);padding-left:clamp(22px,4vw,50px);padding-right:clamp(22px,4vw,50px)}.warm-panel{background:#f4e5d9}.soft-panel{background:var(--c-soft)}.brand-notes{display:grid;grid-template-columns:1fr .72fr;gap:44px;align-items:center}.aside-figure{margin:0}.aside-figure img{border-radius:18px;aspect-ratio:5/4;object-fit:cover}.editorial-steps{padding-left:22px}.editorial-steps li{padding:10px 0 10px 8px;border-bottom:1px dashed rgba(43,37,35,.16)}code{background:rgba(43,37,35,.06);padding:2px 6px;border-radius:6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em}.story-lines{border-top:2px solid var(--c-deep)}.story-line{display:grid;grid-template-columns:52px 1fr 34px;gap:18px;padding:24px 4px;border-bottom:1px solid var(--c-line);align-items:start}.story-line>span{font-family:Georgia,serif;color:var(--c-primary);font-size:16px}.story-line h3{font-size:24px;margin:0 0 8px}.story-line h3 a{text-decoration:none}.story-line p{margin:0;color:var(--c-muted)}.story-line .kicker{color:var(--c-primary);font-size:12px;font-weight:800;margin-bottom:4px}.arrow-link{font-size:24px;text-decoration:none}.dark-band{background:var(--c-deep);color:#f7efe8;border-radius:var(--radius);padding-left:clamp(24px,5vw,58px);padding-right:clamp(24px,5vw,58px);display:grid;grid-template-columns:.9fr 1.1fr;gap:56px}.dark-band h2{color:#fff7f0}.dark-band .eyebrow{color:#edb682}.band-copy p:not(.eyebrow){color:#d8cbc2}.light-button{background:#f8eee5;color:var(--c-deep)}.band-list{display:grid}.band-list a{display:grid;gap:5px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.13);text-decoration:none}.band-list a:first-child{border-top:1px solid rgba(255,255,255,.13)}.band-list span{color:#d4a88e;font-size:12px}.band-list strong{font-family:"Songti SC",serif;font-size:19px;color:#fff}.mobile-strip,.disclosure-note{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:center}.mobile-strip figure,.disclosure-note figure{margin:0}.mobile-strip img,.disclosure-note img{border-radius:24px;aspect-ratio:3/2;object-fit:cover}.shelf-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--c-line);border:1px solid var(--c-line)}.shelf-grid article{background:var(--c-bg);padding:22px}.soft-panel .shelf-grid article{background:#fbf7f2}.shelf-grid article>p:first-child{font-size:12px;color:var(--c-primary);font-weight:800}.shelf-grid h3{font-size:18px}.shelf-grid h3 a{text-decoration:none}.shelf-grid p:last-child{font-size:14px;color:var(--c-muted)}.disclosure-note{grid-template-columns:1.1fr .9fr}.quick-find{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:end}.inline-search{min-width:0}.closing-links{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.closing-links a{display:grid;gap:8px;text-decoration:none;border-top:3px solid var(--c-primary);background:var(--c-white);padding:20px;border-radius:0 0 14px 14px}.closing-links strong{font-family:"Songti SC",serif;font-size:19px}.closing-links span{color:var(--c-muted);font-size:14px}.breadcrumbs{padding:24px 0 0}.breadcrumbs ol{display:flex;list-style:none;padding:0;margin:0;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--c-muted)}.breadcrumbs li+li:before{content:"/";margin-right:8px;color:#b7aba3}.breadcrumbs a{color:var(--c-muted)}.page-lead{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);gap:54px;align-items:center;padding:62px 0 42px}.page-lead img{border-radius:28px;aspect-ratio:3/2;object-fit:cover}.page-lead h1,.page-title-only h1{font-size:clamp(38px,5vw,62px)}.page-title-only{padding:70px 0 28px;max-width:920px}.mini-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.mini-pills span{background:var(--c-soft);border-radius:999px;padding:6px 11px;font-size:12px}.community-anatomy{border-top:1px solid var(--c-line)}.anatomy-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.anatomy-grid article{padding:22px;background:var(--c-white);border:1px solid var(--c-line);border-radius:16px}.anatomy-grid b{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#f4dfd3;color:var(--c-primary);margin-bottom:20px}.anatomy-grid p{color:var(--c-muted);margin-bottom:0}.article-index{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.article-index article{padding:24px;border:1px solid var(--c-line);background:var(--c-white);border-radius:16px}.article-index article:nth-child(3n){background:#f7eee7}.article-index .kicker{color:var(--c-primary);font-size:12px;font-weight:800;margin:0 0 6px}.article-index h3{font-size:22px}.article-index h3 a{text-decoration:none}.article-index p{color:var(--c-muted)}.article-index.compact article{min-height:200px}.article-index.wide{grid-template-columns:repeat(3,1fr)}.quote-panel{display:flex;gap:32px;align-items:end;border-top:1px solid var(--c-line)}.quote-panel blockquote{margin:0;max-width:820px;font-family:"Songti SC",serif;font-size:clamp(22px,3vw,34px);line-height:1.5}.quote-panel>a{margin-left:auto;min-width:max-content;color:var(--c-primary);font-weight:700}.device-flow>ol{list-style:none;padding:0;margin:32px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.device-flow li{background:var(--c-deep);color:#e9dfd7;padding:26px;border-radius:18px}.device-flow strong{display:block;color:#fff;font-family:"Songti SC",serif;font-size:22px}.mobile-caution{display:grid;grid-template-columns:1fr .72fr;gap:42px;align-items:center}.mobile-caution img{border-radius:18px}.state-board>div{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--c-line);border:1px solid var(--c-line)}.state-board article{background:var(--c-bg);padding:24px}.state-board span{display:block;color:var(--c-primary);font-weight:800;margin-bottom:10px}.note-box{border-left:5px solid var(--c-primary);padding-left:28px;background:#f7eee7;border-radius:0 18px 18px 0;margin-bottom:60px}.note-box h2{font-size:28px}.topic-matrix{display:grid;gap:42px}.topic-group>header{display:flex;justify-content:space-between;align-items:end;border-bottom:2px solid var(--c-deep);padding-bottom:10px}.topic-group>header h2{margin:0}.topic-group>header span{color:var(--c-muted);font-size:13px}.topic-group>div{display:grid;grid-template-columns:repeat(2,1fr);gap:0 30px}.topic-group a{display:grid;gap:6px;text-decoration:none;padding:18px 0;border-bottom:1px solid var(--c-line)}.topic-group a strong{font-family:"Songti SC",serif;font-size:19px}.topic-group a span{color:var(--c-muted);font-size:14px}.search-help{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:end;margin-bottom:70px}.verification-flow>div{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.verification-flow article{border-top:4px solid var(--c-accent);padding:20px 8px}.verification-flow b{font-family:Georgia,serif;color:var(--c-primary);font-size:28px}.two-col-note{display:flex;align-items:center;justify-content:space-between;gap:40px;margin-bottom:60px}.two-col-note>div{max-width:760px}.faq-stack{display:grid;gap:10px}.faq-item{border:1px solid var(--c-line);border-radius:14px;background:var(--c-white);overflow:hidden}.faq-item button{width:100%;display:flex;justify-content:space-between;gap:20px;align-items:center;border:0;background:transparent;padding:20px 22px;text-align:left;font-weight:800;color:var(--c-deep)}.faq-item button i{font-style:normal;font-size:22px;color:var(--c-primary)}.faq-answer{padding:0 22px 20px;color:var(--c-muted)}.faq-answer p{margin:0}.faq-next{border-top:1px solid var(--c-line)}.simple-lead{grid-template-columns:1.15fr .85fr}.prose{max-width:800px}.prose h2{margin-top:46px;font-size:30px}.prose p{font-size:17px;color:#514741}.contact-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}.contact-guidance,.contact-placeholder{padding:28px;border:1px solid var(--c-line);border-radius:18px;background:var(--c-white)}.contact-guidance li{margin:10px 0}.contact-placeholder{background:var(--c-soft)}.safety-rules{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.safety-rules article{padding:28px;border-top:4px solid var(--c-primary);background:var(--c-white)}.safety-rules h2{font-size:25px}.search-page-form{margin:24px 0 42px}.empty-state{padding:42px;background:var(--c-soft);border-radius:18px;margin-bottom:70px}.search-results{margin-bottom:70px}.result-count{color:var(--c-muted);font-size:13px;border-bottom:1px solid var(--c-line);padding-bottom:10px}.search-results article{padding:25px 0;border-bottom:1px solid var(--c-line)}.search-results h2{font-size:25px;margin-bottom:8px}.search-results h2 a{text-decoration:none}.search-results p{color:var(--c-muted)}.search-results .kicker{color:var(--c-primary);font-weight:800;font-size:12px}.article-shell{max-width:1120px}.article-header{padding:64px 0 34px;max-width:900px}.article-header h1{font-size:clamp(38px,5vw,64px)}.status-inline{display:flex;gap:8px;flex-wrap:wrap;margin-top:24px}.status-inline span{padding:5px 10px;border-radius:999px;background:var(--c-soft);font-size:12px;color:var(--c-muted)}.article-layout{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:62px;align-items:start}.article-main section{padding:28px 0;border-top:1px solid var(--c-line)}.article-main h2{font-size:30px}.article-main p{font-size:17px;line-height:1.95;color:#4a403b}.article-aside{position:relative}.sticky-note{position:sticky;top:112px;border:1px solid var(--c-line);background:var(--c-white);border-radius:16px;padding:20px}.sticky-note strong{font-family:"Songti SC",serif;font-size:22px}.sticky-note p{font-size:13px;color:var(--c-muted)}.sticky-note a{display:block;padding:10px 0;border-top:1px solid var(--c-line);color:var(--c-primary);font-size:13px}.checklist{background:var(--c-soft);margin:20px 0 50px;padding:28px!important;border:0!important;border-radius:18px}.checklist li{margin:9px 0}.related-reading{border-top:1px solid var(--c-line)}.related-reading>div{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.related-reading a{padding:18px;background:var(--c-white);border:1px solid var(--c-line);border-radius:14px;text-decoration:none}.related-reading span{display:block;color:var(--c-primary);font-size:11px;font-weight:800}.related-reading strong{display:block;margin-top:8px;font-family:"Songti SC",serif}.status-panel{padding:100px 0;max-width:760px}.site-footer{margin-top:70px;background:var(--c-deep);color:#d7cbc4}.footer-grid{max-width:var(--content);margin:auto;padding:60px var(--pad);display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:38px}.footer-grid h2,.footer-grid h3{color:#fff6ef}.footer-grid h2{font-size:30px}.footer-grid h3{font-size:17px}.footer-grid p{max-width:500px;color:#c9bbb2}.footer-grid nav{display:grid;align-content:start;gap:10px}.footer-grid a{color:#d7cbc4;text-decoration:none;font-size:14px}.footer-grid a:hover{color:#fff}.footer-bottom{max-width:var(--content);margin:auto;padding:18px var(--pad) 28px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;font-size:12px}.footer-bottom a{color:#fff}
@media(max-width:1100px){.header-inner{grid-template-columns:auto auto 1fr}.primary-nav{order:3;grid-column:1/-1;justify-content:flex-start;padding-top:4px}.search-trigger{justify-self:end}.shelf-grid{grid-template-columns:repeat(3,1fr)}.article-index.wide{grid-template-columns:repeat(2,1fr)}.related-reading>div{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}.footer-grid nav:last-child{grid-column:2/-1}.article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:38px}}
@media(max-width:900px){.home-intro,.page-lead,.brand-notes,.mobile-strip,.disclosure-note,.mobile-caution,.quick-find,.search-help{grid-template-columns:1fr}.home-intro{padding-top:48px}.intro-figure{max-width:720px}.split-heading{grid-template-columns:1fr;gap:12px}.dark-band{grid-template-columns:1fr;gap:30px}.route-rows article{grid-template-columns:48px 1fr}.route-rows article>a,.route-rows article>strong{grid-column:2;justify-self:start;text-align:left}.anatomy-grid,.state-board>div,.verification-flow>div{grid-template-columns:repeat(2,1fr)}.device-flow>ol{grid-template-columns:1fr}.article-layout{grid-template-columns:1fr}.article-aside{display:none}.page-lead img{max-width:720px}.quote-panel{display:block}.quote-panel>a{display:inline-block;margin-top:22px}.two-col-note{display:block}.two-col-note .button{margin-top:20px}}
@media(max-width:760px){:root{--pad:18px}.site-header{position:sticky}.header-inner{grid-template-columns:1fr auto auto;min-height:70px;gap:9px}.brand-lockup small{display:none}.brand-lockup img{width:40px;height:40px}.menu-toggle{display:flex;align-items:center;gap:3px;padding:8px 11px}.menu-toggle span{display:block;width:3px;height:3px;border-radius:50%;background:var(--c-deep)}.primary-nav{display:none;grid-column:1/-1;padding:8px 0 4px}.primary-nav.is-open{display:flex}.search-trigger{font-size:0;padding:8px 10px}.search-trigger:after{content:"搜索";font-size:12px}.home-intro{grid-template-columns:1fr}.home-intro h1{font-size:42px}.route-rows article{padding:20px 0}.route-no{font-size:18px}.shelf-grid{grid-template-columns:1fr}.article-index,.article-index.wide,.topic-group>div,.closing-links,.safety-rules{grid-template-columns:1fr}.anatomy-grid{grid-template-columns:1fr 1fr}.page-lead{padding-top:42px}.page-lead h1,.page-title-only h1{font-size:40px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>section{grid-column:1/-1}.footer-grid nav:last-child{grid-column:auto}.search-dialog{padding:28px 20px}.search-fields,.inline-search>div,.search-page-form>div{align-items:stretch}.related-reading>div{grid-template-columns:1fr 1fr}}
@media(max-width:520px){h1{font-size:38px}.section-pad{padding-top:48px;padding-bottom:48px}.home-route-line{align-items:flex-start}.route-rows article{grid-template-columns:36px 1fr;gap:12px}.story-line{grid-template-columns:34px 1fr}.story-line .arrow-link{display:none}.dark-band{border-radius:18px;margin-left:-8px;margin-right:-8px}.anatomy-grid,.state-board>div,.verification-flow>div,.related-reading>div{grid-template-columns:1fr}.article-index article{padding:20px}.closing-links a{padding:18px}.mini-pills{display:grid;grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-grid nav:last-child{grid-column:auto}.footer-bottom{gap:16px;flex-direction:column}.search-fields,.inline-search>div,.search-page-form>div{flex-direction:column}.search-fields button,.inline-search button,.search-page-form button{min-height:46px}.page-title-only{padding-top:48px}.quote-panel blockquote{font-size:24px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}