/* Base */
:root{--brand:#B9473F;--brand-deep:#8F352F;--amber:#D89A45;--ink:#1E2026;--text:#2B2D31;--muted:#6F706F;--bg:#F7F4EF;--soft:#EEE9E2;--accent:#E06A3B;--line:#DDD6CE;--white:#FFFDF9;--radius:18px;--shadow:0 18px 45px rgba(30,32,38,.08);--container:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.75}body.modal-open{overflow:hidden}img{max-width:100%;height:auto;display:block}a{color:inherit}button,input{font:inherit}button{cursor:pointer}.container{width:min(calc(100% - 40px),var(--container));margin-inline:auto}
.skip-link{position:fixed;left:16px;top:-80px;z-index:1000;background:var(--ink);color:#fff;padding:10px 14px;border-radius:8px;text-decoration:none}.skip-link:focus{top:16px}
.topline{background:var(--ink);color:#e9e4dd;font-size:13px}.topline-inner{display:flex;justify-content:space-between;gap:20px;padding:7px 0}.topline a{text-decoration:none;border-bottom:1px solid rgba(255,255,255,.25)}
.site-header{background:rgba(247,244,239,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100}.header-main{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px 0}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand img{width:48px;height:48px;object-fit:contain}.brand span{display:grid;gap:1px}.brand strong{font-size:22px;line-height:1.1}.brand small{font-size:12px;color:var(--muted)}
.header-actions{display:flex;align-items:center;gap:10px}.icon-button,.menu-toggle{border:1px solid var(--line);background:var(--white);color:var(--text);padding:9px 13px;border-radius:10px;display:inline-flex;align-items:center;gap:8px}.icon-button:hover,.menu-toggle:hover{border-color:var(--brand)}.menu-toggle{display:none}
.site-nav{border-top:1px solid var(--line)}.nav-inner{display:flex;align-items:center;gap:4px;min-height:48px}.nav-inner a{padding:9px 14px;border-radius:8px;text-decoration:none;color:#45464a;font-size:15px}.nav-inner a:hover,.nav-inner a[aria-current="page"]{background:var(--soft);color:var(--brand-deep)}
.search-modal[hidden]{display:none!important}.search-modal{position:fixed;inset:0;z-index:1000;display:grid;place-items:start center;padding:12vh 20px 20px}.search-backdrop{position:absolute;inset:0;background:rgba(18,19,22,.72)}
.search-panel{position:relative;width:min(680px,100%);background:var(--white);border-radius:20px;padding:32px;box-shadow:0 30px 80px rgba(0,0,0,.25)}.search-panel h2{margin:0 0 8px;font-size:30px;line-height:1.25}.search-panel p{margin:0 0 18px;color:var(--muted)}
.search-close{position:absolute;right:16px;top:14px;width:40px;height:40px;border:0;border-radius:50%;background:var(--soft);font-size:24px}.search-form label{display:block;font-weight:700;margin-bottom:6px}.search-row{display:flex;gap:8px}.search-row input{flex:1;min-width:0;border:1px solid #cfc6bc;background:#fff;padding:12px 14px;border-radius:10px}.search-row input:focus{outline:2px solid rgba(185,71,63,.2);border-color:var(--brand)}.search-row button{border:0;background:var(--brand);color:#fff;padding:12px 18px;border-radius:10px;font-weight:700}

.hero{padding:64px 0 42px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}.hero-copy h1,.page-hero h1{font-size:clamp(38px,5vw,64px);line-height:1.08;letter-spacing:-.035em;margin:10px 0 20px;color:var(--ink)}.page-hero h1{font-size:clamp(34px,4.6vw,54px);max-width:1000px}
.eyebrow{color:var(--brand);font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;margin:0 0 8px}.lead{font-size:19px;line-height:1.8;color:#4e4f53;max-width:820px}
.hero-actions,.final-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 18px;border-radius:10px;text-decoration:none;font-weight:800;border:1px solid transparent}.button.primary{background:var(--brand);color:#fff}.button.primary:hover{background:var(--brand-deep)}.button.secondary{background:var(--white);border-color:#cfc6bc;color:var(--ink)}.button.secondary:hover{border-color:var(--brand);color:var(--brand)}.button.ghost{background:transparent;border-color:var(--line);color:var(--text)}.button.dark{background:var(--ink);color:#fff}
.hero-notes{display:flex;flex-wrap:wrap;gap:10px 22px;padding:0;margin:22px 0 0;list-style:none;color:var(--muted);font-size:14px}.hero-notes li::before{content:"✓";color:var(--brand);font-weight:800;margin-right:6px}.hero-media{margin:0;position:relative}.hero-media img{border-radius:28px;box-shadow:var(--shadow);width:100%;aspect-ratio:1.35/1;object-fit:cover;background:var(--soft)}.hero-media figcaption{margin-top:10px;color:var(--muted);font-size:13px}
.section{padding:72px 0}.section-muted{background:var(--soft)}.section-intro{padding-top:42px}.section-heading{max-width:760px;margin-bottom:30px}.section-heading h2,.split-heading h2,.prose h2,.two-column h2,.final-cta h2,.callout-grid h2{font-size:clamp(28px,3.4vw,42px);line-height:1.2;letter-spacing:-.02em;color:var(--ink);margin:8px 0 12px}.section-heading p{color:var(--muted);margin:0}
.split-heading{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}.prose{font-size:17px}.prose.compact{font-size:16px}.prose p{margin:0 0 18px}.prose a{color:var(--brand-deep);text-underline-offset:3px}.prose h2{font-size:30px;margin:38px 0 14px}.prose h2:first-child{margin-top:0}.prose h3{font-size:21px;color:var(--ink);margin:26px 0 8px}.wide-prose{max-width:860px}
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.feature-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.feature-card img{width:100%;aspect-ratio:1.75/1;object-fit:cover;background:#e8e1d9}.feature-card-body{padding:24px}.feature-card h3{margin:0 0 8px;font-size:24px;color:var(--ink)}.feature-card p{color:var(--muted);margin:0 0 14px}.text-link{color:var(--brand-deep);font-weight:800;text-decoration-thickness:1px;text-underline-offset:4px}
.tone-dark{background:var(--ink);color:#eae6df}.section-heading.light h2{color:#fff}.section-heading.light .eyebrow{color:#f0a264}.editorial-list{display:grid;gap:0;border-top:1px solid rgba(255,255,255,.12)}.editorial-item{display:grid;grid-template-columns:90px 1fr;gap:22px;padding:28px 0;border-bottom:1px solid rgba(255,255,255,.12)}.editorial-index{font-size:36px;font-weight:800;color:#7f8188}.editorial-item h3{font-size:27px;color:#fff;margin:8px 0}.editorial-item p{max-width:820px;color:#c9c9c9;margin:0 0 10px}.editorial-item a{color:#f0a264}
.tag{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--brand);background:rgba(185,71,63,.09);padding:4px 8px;border-radius:99px}.tone-dark .tag{color:#f4b077;background:rgba(244,176,119,.12)}
.media-split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}.media-split.reverse{grid-template-columns:.95fr 1.05fr}.wide-media,.small-media{margin:0}.wide-media img,.small-media img{width:100%;border-radius:24px;background:#e8e1d9;object-fit:cover;box-shadow:var(--shadow)}
.inline-links,.device-actions{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:22px}.inline-links a,.device-actions a{color:var(--brand-deep);font-weight:800}
.topic-list{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.topic-list article{padding:24px 0;border-top:3px solid var(--ink)}.topic-list h3,.topic-list h2{margin:0 0 8px;font-size:21px;color:var(--ink)}.topic-list p{color:var(--muted);margin:0 0 12px}.topic-list.large{grid-template-columns:repeat(3,1fr);gap:20px}.topic-list.large article{background:var(--white);padding:24px;border:1px solid var(--line);border-top:4px solid var(--brand);border-radius:14px}.topic-list.large h2{font-size:23px;margin-top:12px}.section-action{margin-top:28px}
.two-column{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}.two-column.align-start{align-items:start}.sticky-media{position:sticky;top:160px}.small-media figcaption{color:var(--muted);font-size:13px;margin-top:9px}.tone-accent{background:#E8C29A}.callout-grid{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}.callout-grid .eyebrow{color:#7f2b28}.callout-grid p{max-width:820px}
.faq-preview{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-preview details,.faq-list details{background:var(--white);border:1px solid var(--line);border-radius:12px}.faq-preview summary,.faq-list summary{cursor:pointer;font-weight:800;color:var(--ink);padding:18px 20px}.faq-preview p{padding:0 20px 18px;margin:0;color:var(--muted)}
.final-cta{display:flex;justify-content:space-between;align-items:end;gap:40px;border-top:1px solid var(--line);padding-top:36px}.final-cta p{max-width:760px;color:var(--muted)}
.breadcrumbs{background:var(--soft);border-bottom:1px solid var(--line)}.breadcrumbs ol{width:min(calc(100% - 40px),var(--container));margin:0 auto;padding:10px 0;display:flex;flex-wrap:wrap;gap:5px 14px;list-style:none;font-size:13px;color:var(--muted)}.breadcrumbs li:not(:last-child)::after{content:"/";margin-left:14px;color:#aaa}.breadcrumbs a{text-decoration:none}.breadcrumbs a:hover{color:var(--brand)}
.page-hero{padding:58px 0 42px}.page-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:46px;align-items:center}.page-hero-grid>img{width:100%;aspect-ratio:1.5/1;object-fit:cover;border-radius:24px;background:var(--soft)}.compact-hero{padding-bottom:30px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:54px;align-items:start}.article-main{min-width:0}.article-aside{display:grid;gap:18px;position:sticky;top:160px}.aside-card{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:20px}.aside-card h2{font-size:18px;margin:0 0 12px;color:var(--ink)}.aside-card a{display:block;padding:9px 0;border-top:1px solid #e9e2d9;text-decoration:none;color:#4b4c50}.aside-card a:hover{color:var(--brand)}.aside-card strong{display:block;font-size:19px;color:var(--brand-deep);word-break:break-all}.aside-card p{font-size:14px;color:var(--muted);margin:8px 0 0}.accent-card{background:#F2DED4;border-color:#e8c1b1}.aside-image{margin:0}.aside-image img{border-radius:14px;background:var(--soft)}
.comparison{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0 28px}.comparison>div{background:var(--soft);padding:20px;border-radius:12px}.comparison h3{margin-top:0}.check-list{padding-left:22px}.check-list li{margin:8px 0}
.steps-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.steps-grid article{background:var(--white);border:1px solid var(--line);padding:20px;border-radius:12px}.steps-grid span{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800}.steps-grid h3{font-size:19px;margin:14px 0 6px}.steps-grid p{font-size:14px;color:var(--muted);margin:0}
.journey{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}.journey-step{display:grid;grid-template-columns:80px 1fr;gap:22px;background:var(--white);padding:26px}.journey-step>span{font-size:34px;font-weight:900;color:#b8afa6}.journey-step h2{margin:0 0 5px;font-size:24px;color:var(--ink)}.journey-step p{margin:0;color:var(--muted)}
.timeline{max-width:900px;margin:0 auto}.timeline-item{display:grid;grid-template-columns:90px 1fr;gap:26px;padding:28px 0;border-bottom:1px solid var(--line)}.timeline-item>span{font-size:34px;font-weight:900;color:var(--brand)}.timeline-item h2{margin:0 0 7px;font-size:27px}.timeline-item p{margin:0;color:var(--muted)}
.guide-index{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.guide-index article{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:22px}.guide-index h3{font-size:20px;margin:0 0 8px}.guide-index p{color:var(--muted);font-size:15px}.guide-index a{color:var(--brand-deep);font-weight:800}
.topic-feature{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}.topic-feature>img{width:100%;border-radius:22px;background:var(--soft)}
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:44px;align-items:start}.faq-list{display:grid;gap:12px}.faq-list summary{font-size:18px}.faq-answer{padding:0 20px 18px;color:var(--muted)}.faq-answer p{margin:0}
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.contact-grid article{background:var(--white);border:1px solid var(--line);padding:24px;border-radius:14px}.contact-grid h2{margin:0 0 8px;font-size:23px}.contact-grid p{margin:0;color:var(--muted)}
.warning-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.warning-grid article{padding:24px;border-top:4px solid var(--brand);background:var(--white);border-radius:0 0 14px 14px}.warning-grid span{font-weight:900;color:#b1aaa2}.warning-grid h2{font-size:21px;margin:12px 0 6px}.warning-grid p{font-size:15px;color:var(--muted);margin:0}
.sitemap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.sitemap-grid section{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:24px}.sitemap-grid h2{font-size:22px;margin:0 0 12px}.sitemap-grid a{display:block;padding:9px 0;border-top:1px solid #ece5dc;text-decoration:none;color:#48494d}.sitemap-grid a:hover{color:var(--brand)}
.page-search{max-width:720px;margin-top:24px}.result-count{color:var(--muted);margin-top:0}.search-results{display:grid;gap:12px}.search-results article{background:var(--white);border:1px solid var(--line);border-radius:13px;padding:22px}.search-results h2{margin:0 0 6px;font-size:22px}.search-results h2 a{text-decoration:none}.search-results p{color:var(--muted);margin:0 0 10px}.empty-state{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:34px;max-width:760px}.empty-state h2{margin:0 0 8px}
.error-page{padding:90px 0}.error-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}.error-grid h1{font-size:clamp(40px,7vw,76px);line-height:1;margin:8px 0 20px}.error-links{background:var(--soft);border-radius:18px;padding:28px}.error-links h2{margin-top:0}.error-links a{display:block;padding:10px 0;border-top:1px solid #d9d1c8;text-decoration:none}.error-links a:hover{color:var(--brand)}
.site-footer{background:var(--ink);color:#d3d1cd;margin-top:30px}.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:34px;padding:52px 0}.footer-grid h2{color:#fff;font-size:17px;margin:0 0 12px}.footer-grid p{font-size:14px;color:#bdbcb8;margin:0 0 12px}.footer-grid ul{list-style:none;padding:0;margin:0}.footer-grid li{margin:8px 0}.footer-grid a{color:#d8d6d1;text-decoration:none;font-size:14px}.footer-grid a:hover{color:#fff;text-decoration:underline}.footer-grid .text-link{color:#f0a264}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 0 24px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#96979b}.footer-bottom p{margin:0}.footer-bottom a{color:#b9b8b4}.back-to-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border:0;border-radius:50%;background:var(--brand);color:#fff;font-size:20px;box-shadow:var(--shadow);z-index:90}
@media (max-width:1100px){.topic-list{grid-template-columns:repeat(2,1fr)}.steps-grid{grid-template-columns:repeat(3,1fr)}.guide-index{grid-template-columns:repeat(2,1fr)}.warning-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:900px){.menu-toggle{display:inline-flex}.site-nav{display:none}.site-nav.is-open{display:block}.nav-inner{align-items:stretch;flex-direction:column;padding:10px 0 14px}.nav-inner a{padding:10px 12px}.hero-grid,.page-hero-grid,.media-split,.media-split.reverse,.two-column,.topic-feature,.split-heading,.article-layout,.faq-layout,.error-grid{grid-template-columns:1fr}.article-aside,.sticky-media{position:static}.hero{padding-top:44px}.hero-media{order:-1}.hero-media img{max-height:440px}.feature-grid{grid-template-columns:1fr}.callout-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}.faq-preview{grid-template-columns:1fr}.sitemap-grid{grid-template-columns:1fr}}
@media (max-width:680px){.container{width:min(calc(100% - 28px),var(--container))}.topline-inner{font-size:12px}.topline-inner span{max-width:70%}.header-main{padding:13px 0}.brand img{width:42px;height:42px}.brand strong{font-size:19px}.brand small{display:none}.icon-button span:last-child{display:none}.hero-copy h1,.page-hero h1{font-size:36px}.lead{font-size:17px}.section{padding:52px 0}.section-heading h2,.split-heading h2,.prose h2,.two-column h2,.final-cta h2,.callout-grid h2{font-size:28px}.topic-list,.topic-list.large,.guide-index,.contact-grid,.warning-grid,.steps-grid{grid-template-columns:1fr}.editorial-item{grid-template-columns:56px 1fr}.editorial-index{font-size:28px}.final-cta{align-items:stretch;flex-direction:column}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.search-panel{padding:28px 20px 22px}.search-row{flex-direction:column}.search-row button{width:100%}.comparison{grid-template-columns:1fr}.journey-step,.timeline-item{grid-template-columns:54px 1fr;gap:14px}.journey-step{padding:20px}.timeline-item>span,.journey-step>span{font-size:26px}.page-hero{padding-top:42px}}
@media (max-width:420px){.container{width:min(calc(100% - 22px),var(--container))}.hero-actions,.final-actions{display:grid}.button{width:100%}.header-actions{gap:6px}.icon-button,.menu-toggle{padding:8px 10px}.hero-copy h1,.page-hero h1{font-size:32px}}

.question-preview article{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:20px}.question-preview h3{font-size:18px;margin:0 0 10px;color:var(--ink)}