:root{
 --brand:#B9473F;--brand-dark:#92362F;--amber:#D89A45;--dark:#1E2026;
 --bg:#F7F4EF;--soft:#EEE9E2;--text:#2B2D31;--muted:#6F706F;
 --accent:#E06A3B;--line:#D8D2C9;--white:#fff;
 --shadow:0 18px 45px rgba(30,32,38,.09);--radius:22px;
 --shell:min(1180px,calc(100% - 48px));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration-color:rgba(185,71,63,.35);text-underline-offset:4px}
a:hover{color:var(--brand)}
button,input{font:inherit}
button{cursor:pointer}
.shell{width:var(--shell);margin:0 auto}
.narrow{max-width:820px}
.skip-link{position:absolute;left:-9999px;top:10px;background:var(--dark);color:#fff;padding:10px 14px;z-index:1000}
.skip-link:focus{left:10px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(247,244,239,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(43,45,49,.08)}
.header-inner{min-height:76px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:220px}
.brand img{width:44px;height:44px;object-fit:contain}
.brand span{display:flex;flex-direction:column;line-height:1.25}
.brand strong{font-size:18px;color:var(--dark)}
.brand small{font-size:11px;color:var(--muted);letter-spacing:.08em;margin-top:3px}
.site-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.site-nav a{padding:9px 11px;border-radius:999px;text-decoration:none;font-size:14px;color:#4A4C50;white-space:nowrap}
.site-nav a:hover,.site-nav a[aria-current="page"]{background:var(--soft);color:var(--brand)}
.search-open,.menu-toggle{border:1px solid var(--line);background:transparent;border-radius:999px;padding:9px 14px;color:var(--dark)}
.menu-toggle{display:none}
.breadcrumbs{padding:16px 0 0}
.breadcrumbs ol{display:flex;align-items:center;gap:10px;list-style:none;margin:0;padding:0;color:var(--muted);font-size:13px;flex-wrap:wrap}
.breadcrumbs li+li::before{content:"/";margin-right:10px;color:#AAA39A}

.hero{padding:72px 0 36px;background:linear-gradient(180deg,#F3EEE7 0%,var(--bg) 100%)}
.hero-grid,.article-hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center}
.hero-copy h1,.page-hero h1,.article-hero h1{font-size:clamp(38px,5vw,68px);line-height:1.08;letter-spacing:-.035em;margin:10px 0 22px;color:var(--dark)}
.hero-lead,.page-hero p,.article-deck{font-size:19px;line-height:1.8;color:#4D4F53;max-width:720px}
.eyebrow{margin:0;color:var(--brand);font-size:13px;font-weight:800;letter-spacing:.14em}
.hero-media{margin:0;background:var(--dark);padding:14px;border-radius:30px;box-shadow:var(--shadow)}
.hero-media img{aspect-ratio:4/3;object-fit:cover;border-radius:20px}
.hero-media figcaption{color:#D5D5D5;font-size:12px;padding:10px 5px 0}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 18px;border-radius:999px;border:1px solid transparent;text-decoration:none;font-weight:750}
.button.primary{background:var(--brand);color:#fff}
.button.primary:hover{background:var(--brand-dark);color:#fff}
.button.secondary{background:var(--soft);color:var(--dark);border-color:#D5CFC6}
.button.secondary:hover{color:var(--brand);border-color:#C6BAB0}
.button.ghost{background:transparent;border-color:#CFC8BE;color:var(--dark)}
.button.light{background:#fff;color:var(--dark)}
.hero-notes{list-style:none;padding:0;margin:28px 0 0;display:grid;gap:9px;color:var(--muted);font-size:14px}
.hero-notes li::before{content:"•";color:var(--accent);font-weight:900;margin-right:9px}

.section{padding:76px 0}
.section-heading{margin-bottom:34px;max-width:820px}
.section-heading h2,.two-col h2,.content-split h2,.dark-section h2,.prose h2,.final-cta h2,.guide-content h2{margin:8px 0 12px;color:var(--dark);font-size:clamp(28px,3.4vw,43px);line-height:1.2;letter-spacing:-.025em}
.section-heading>p:last-child,.split-heading>p{color:var(--muted)}
.split-heading{max-width:none;display:grid;grid-template-columns:1.05fr .8fr;gap:60px;align-items:end}
.topic-cards{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.topic-card{border-top:4px solid var(--brand);background:#fff;padding:24px 20px;border-radius:0 0 14px 14px;min-height:220px;display:flex;flex-direction:column}
.topic-card h3{font-size:19px;margin:0 0 12px}
.topic-card p{color:var(--muted);font-size:14px;margin:0 0 20px}
.topic-card a{margin-top:auto;font-weight:750;font-size:14px}
.soft-band{background:var(--soft)}

.feature-list{border-top:1px solid #CDC6BD}
.feature-row{display:grid;grid-template-columns:48px 1fr auto;gap:22px;align-items:center;padding:24px 0;border-bottom:1px solid #CDC6BD}
.feature-row h3{margin:0 0 5px;font-size:22px}
.feature-row p{margin:0;color:var(--muted)}
.feature-row>a{font-weight:750;white-space:nowrap}
.feature-index{width:36px;height:36px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800}

.two-col,.content-split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.two-col figure,.content-split figure,.page-hero figure{margin:0}
.two-col figure img,.content-split figure img,.page-hero figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:26px;box-shadow:var(--shadow)}
.two-col p,.content-split p{color:#4D4F53}
.text-link{font-weight:800;color:var(--brand)}

.dark-section{background:var(--dark);color:#E7E4DE}
.dark-section h2,.dark-section h3{color:#fff}
.dark-section .eyebrow{color:#F1B06A}
.dark-section .section-heading p{color:#BFC0C1}
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.device-grid article{border:1px solid #40434A;border-radius:var(--radius);padding:26px}
.device-grid h3{font-size:22px;margin:0 0 9px}
.device-grid p,.device-grid li{color:#C9C9CA}
.device-grid ul,.device-grid ol{padding-left:20px;margin-bottom:0}
.device-grid.light article{background:#fff;border-color:#D7D1C8}
.device-grid.light h3{color:var(--dark)}
.device-grid.light p,.device-grid.light li{color:var(--muted)}
.section-action{margin:30px 0 0}

.editorial-grid{display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:18px}
.editorial-card{background:#fff;border-radius:var(--radius);overflow:hidden}
.editorial-card img{width:100%;aspect-ratio:3/2;object-fit:cover}
.editorial-card>div{padding:22px}
.editorial-card h3{font-size:23px;line-height:1.3;margin:7px 0 10px}
.editorial-card p{color:var(--muted)}
.tagline,.meta{font-size:12px;color:var(--brand)!important;font-weight:750;letter-spacing:.03em}
.brief-list{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:18px}
.brief-list li{padding-left:22px;position:relative}
.brief-list li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:50%;background:var(--accent)}

.article-list{border-top:1px solid var(--line)}
.article-list article{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;padding:24px 0;border-bottom:1px solid var(--line)}
.article-list h3{font-size:22px;margin:4px 0 6px}
.article-list p{margin:0;color:var(--muted)}
.row-link{font-weight:750;text-align:right}
.faq-preview{background:#F0E7DD}
.faq-list{display:grid;gap:10px}
.faq-list details{background:#fff;border:1px solid #DED5CA;border-radius:16px;padding:18px 20px}
.faq-list summary{font-weight:800;cursor:pointer;padding-right:22px}
.faq-list p{margin:12px 0 0;color:var(--muted)}
.final-cta{padding-top:50px}
.final-cta-inner{background:var(--dark);color:#fff;border-radius:32px;padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:35px}
.final-cta h2{color:#fff}
.final-cta p{margin-bottom:0;color:#C8C9CA}

.page-hero{padding:60px 0 30px}
.page-hero.compact{padding:46px 0 18px}
.page-hero.minimal{padding:48px 0 0}
.page-hero.minimal .shell{max-width:900px}
.page-hero.minimal h1{font-size:clamp(36px,4vw,54px)}
.domain-box{margin-top:28px;padding:20px 24px;border-left:4px solid var(--brand);background:var(--soft);display:inline-flex;flex-direction:column}
.domain-box span{font-size:12px;color:var(--muted)}
.domain-box strong{font-size:24px;letter-spacing:.02em}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-grid article{padding:30px;background:#fff;border-radius:var(--radius);border:1px solid #E0DAD1}
.compare-grid h3{font-size:24px;margin-top:0}
.compare-grid p{color:var(--muted)}
.prose{font-size:17px}
.prose.wide{max-width:900px}
.prose h2{font-size:30px;margin-top:42px}
.prose h2:first-child{margin-top:0}
.prose p{color:#4A4C50}
.prose a{color:var(--brand);font-weight:700}

.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.check-grid article{background:#fff;border:1px solid #E1DBD2;padding:25px;border-radius:var(--radius)}
.check-grid article>span{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--amber);color:#fff;font-weight:800}
.check-grid h3,.check-grid h2{font-size:21px;margin:16px 0 8px}
.check-grid p{margin:0;color:var(--muted)}
.definition-list{display:grid;gap:0;margin:22px 0 0}
.definition-list div{display:grid;grid-template-columns:160px 1fr;gap:20px;border-top:1px solid #D7D1C8;padding:15px 0}
.definition-list dt{font-weight:800}
.definition-list dd{margin:0;color:var(--muted)}
.link-panels{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.link-panels a{display:flex;flex-direction:column;gap:8px;text-decoration:none;background:#fff;border:1px solid #DDD6CD;border-radius:var(--radius);padding:26px}
.link-panels strong{font-size:21px}
.link-panels span{color:var(--muted)}

.guide-layout{display:grid;grid-template-columns:290px 1fr;gap:70px;align-items:start}
.guide-index{position:sticky;top:110px;background:#fff;border:1px solid #E1DBD2;border-radius:var(--radius);padding:22px}
.guide-index h2{font-size:17px;margin:0 0 14px}
.guide-index ol{padding-left:20px;margin:0}
.guide-index li{margin:9px 0;color:var(--muted)}
.guide-content{max-width:760px}
.guide-chapter{padding:0 0 50px;margin:0 0 50px;border-bottom:1px solid var(--line);scroll-margin-top:120px}
.guide-chapter:last-child{border-bottom:0}
.chapter-no{color:var(--accent);font-weight:900;letter-spacing:.1em}
.guide-chapter p,.guide-chapter li{color:#505256}
.guide-chapter li{margin:8px 0}

.topic-index{display:grid}
.topic-index-row{display:grid;grid-template-columns:70px 280px 1fr;gap:30px;align-items:center;padding:28px 0;border-bottom:1px solid var(--line)}
.topic-index-number{font-size:28px;color:#AAA39A;font-weight:800}
.topic-index-row img{width:280px;height:180px;object-fit:cover;border-radius:18px}
.topic-index-row h2{font-size:30px;margin:6px 0 10px}
.topic-index-row p{color:var(--muted)}

.article-page{padding-bottom:40px}
.article-hero{padding:52px 0 38px}
.article-hero figure{margin:0}
.article-hero figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:26px}
.article-hero h1{font-size:clamp(36px,4vw,58px)}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:80px;align-items:start}
.article-body{font-size:18px}
.article-body p{margin:0 0 24px;color:#3F4145}
.article-body h2{font-size:30px;margin:48px 0 18px;color:var(--dark)}
.lead-paragraph{font-size:21px;color:var(--dark)!important}
.article-aside{position:sticky;top:110px;border-top:4px solid var(--brand);background:#fff;padding:20px}
.article-aside h2{font-size:17px;margin:0 0 12px}
.article-aside ul{list-style:none;padding:0;margin:0}
.article-aside li{border-top:1px solid #EEEAE4;padding:10px 0}
.inline-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.inline-links a{background:var(--soft);padding:8px 12px;border-radius:999px;text-decoration:none;font-size:14px;font-weight:750}
.callout{margin-top:44px;background:#F0E7DD;border-radius:var(--radius);padding:26px}
.callout h2{margin-top:0}

.filter-nav{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:40px}
.filter-nav a{padding:8px 13px;border-radius:999px;background:#fff;border:1px solid var(--line);text-decoration:none;font-size:14px}
.filter-nav a[aria-current="page"]{background:var(--dark);color:#fff;border-color:var(--dark)}
.article-card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.article-card-grid article{background:#fff;border-radius:var(--radius);overflow:hidden}
.article-card-grid img{width:100%;aspect-ratio:3/2;object-fit:cover}
.article-card-grid article>div{padding:24px}
.article-card-grid h2{font-size:24px;line-height:1.35;margin:5px 0 10px}
.article-card-grid p{color:var(--muted)}
.faq-layout{display:grid;grid-template-columns:1fr 300px;gap:60px;align-items:start}
.faq-list.large details{padding:22px 24px}
.faq-aside{position:sticky;top:110px;background:var(--dark);color:#fff;border-radius:var(--radius);padding:24px}
.faq-aside h2{margin-top:0}
.faq-aside p,.faq-aside li{color:#C9C9CA}
.faq-aside ul{padding-left:18px}

.search-modal[hidden]{display:none!important}
.search-modal{position:fixed;inset:0;z-index:100}
.search-backdrop{position:absolute;inset:0;background:rgba(20,22,25,.72)}
.search-panel{position:relative;width:min(640px,calc(100% - 32px));margin:12vh auto 0;background:var(--bg);border-radius:26px;padding:30px;box-shadow:var(--shadow)}
.search-close{position:absolute;right:18px;top:14px;border:0;background:transparent;font-size:32px;color:var(--muted)}
.search-panel h2{font-size:30px;margin:0 0 8px}
.search-panel p{color:var(--muted)}
.search-form label{display:block;font-size:13px;font-weight:800;margin-bottom:7px}
.search-row{display:grid;grid-template-columns:1fr auto;gap:9px}
.search-row input{min-width:0;border:1px solid #CFC7BD;background:#fff;border-radius:999px;padding:12px 16px;outline:0}
.search-row input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(185,71,63,.12)}
.search-row button{border:0;background:var(--brand);color:#fff;border-radius:999px;padding:11px 18px;font-weight:800}
.page-search{max-width:650px;margin-top:24px}
.empty-state{padding:50px 0;max-width:760px}
.tag-links{display:flex;gap:10px;flex-wrap:wrap}
.tag-links a{background:#fff;border:1px solid var(--line);padding:8px 14px;border-radius:999px;text-decoration:none}
.search-results{display:grid;border-top:1px solid var(--line)}
.search-results article{padding:24px 0;border-bottom:1px solid var(--line)}
.search-results h2{font-size:25px;margin:5px 0}
.search-results p{color:var(--muted)}
.error-page{min-height:58vh;display:flex;align-items:center}
.error-page h1{font-size:clamp(42px,6vw,72px);line-height:1.05;margin:10px 0 20px}
.error-page p{font-size:18px;color:var(--muted)}

.site-footer{background:var(--dark);color:#E8E6E1;padding:58px 0 24px;margin-top:36px}
.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:44px}
.footer-grid h2{font-size:16px;margin:0 0 14px;color:#fff}
.footer-grid p,.footer-grid li{font-size:14px;color:#BFC0C1}
.footer-grid ul{list-style:none;padding:0;margin:0}
.footer-grid li{margin:8px 0}
.footer-grid a{text-decoration:none}
.footer-grid a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;align-items:center;border-top:1px solid #3D4046;margin-top:38px;padding-top:22px;color:#999C9F;font-size:12px}
body.modal-open{overflow:hidden}
:focus-visible{outline:3px solid rgba(224,106,59,.5);outline-offset:3px}

@media(max-width:1100px){
 :root{--shell:min(100% - 36px,1050px)}
 .site-nav a{padding:8px;font-size:13px}
 .topic-cards{grid-template-columns:repeat(3,1fr)}
 .editorial-grid{grid-template-columns:1fr 1fr}
 .check-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
 .header-inner{flex-wrap:wrap;padding:12px 0}
 .brand{margin-right:auto}
 .menu-toggle{display:inline-flex}
 .site-nav{display:none;order:4;width:100%;margin:0;padding-top:8px;border-top:1px solid var(--line);flex-wrap:wrap}
 .site-nav.is-open{display:flex}
 .hero{padding-top:45px}
 .hero-grid,.article-hero-grid,.two-col,.content-split{grid-template-columns:1fr;gap:34px}
 .split-heading{grid-template-columns:1fr;gap:8px}
 .device-grid{grid-template-columns:1fr}
 .feature-row{grid-template-columns:42px 1fr}
 .feature-row>a{grid-column:2}
 .guide-layout,.article-layout,.faq-layout{grid-template-columns:1fr;gap:35px}
 .guide-index,.article-aside,.faq-aside{position:static}
 .footer-grid{grid-template-columns:1fr 1fr}
 .topic-index-row{grid-template-columns:50px 220px 1fr}
 .topic-index-row img{width:220px;height:150px}
}
@media(max-width:680px){
 :root{--shell:calc(100% - 28px)}
 .brand{min-width:0}
 .brand strong{font-size:16px}
 .brand small{display:none}
 .search-open{padding:8px 11px;font-size:13px}
 .hero-copy h1,.page-hero h1,.article-hero h1{font-size:38px}
 .section{padding:56px 0}
 .section-heading h2,.two-col h2,.content-split h2,.dark-section h2,.prose h2,.final-cta h2,.guide-content h2{font-size:29px}
 .topic-cards,.editorial-grid,.compare-grid,.link-panels,.article-card-grid,.check-grid{grid-template-columns:1fr}
 .topic-card{min-height:0}
 .article-list article{grid-template-columns:1fr}
 .row-link{text-align:left}
 .definition-list div{grid-template-columns:1fr;gap:4px}
 .topic-index-row{grid-template-columns:1fr;gap:12px}
 .topic-index-row img{width:100%;height:auto;aspect-ratio:3/2}
 .final-cta-inner{padding:28px 24px;align-items:flex-start;flex-direction:column}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{align-items:flex-start;flex-direction:column}
}
@media(max-width:420px){
 .header-inner{gap:10px}
 .brand img{width:38px;height:38px}
 .menu-toggle,.search-open{font-size:12px}
 .hero-copy h1,.page-hero h1,.article-hero h1{font-size:34px}
 .button{width:100%}
 .cta-row{display:grid}
 .search-row{grid-template-columns:1fr}
 .search-row button{width:100%}
}