:root{
    --brand:#B9473F;
    --amber:#D89A45;
    --dark:#1E2026;
    --paper:#F7F4EF;
    --soft:#EEE9E2;
    --text:#2B2D31;
    --muted:#6F706F;
    --accent:#E06A3B;
    --white:#fffdf9;
    --line:#d8d0c6;
    --shadow:0 18px 45px rgba(30,32,38,.09);
    --radius-lg:30px;
    --radius-md:18px;
    --radius-sm:10px;
    --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--paper)}
body{margin:0;background:var(--paper);color:var(--text);font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
body.modal-open{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{color:inherit}
.container{width:min(calc(100% - 40px),var(--max));margin-inline:auto}
.narrow{width:min(calc(100% - 40px),900px)}
.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}
.skip-link{position:fixed;left:16px;top:12px;z-index:1000;background:var(--dark);color:#fff;padding:10px 14px;border-radius:8px;transform:translateY(-160%)}
.skip-link:focus{transform:translateY(0)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(247,244,239,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(30,32,38,.08)}
.header-row{min-height:78px;display:flex;align-items:center;gap:22px}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.brand img{width:46px;height:46px;object-fit:contain;border-radius:12px}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__text strong{font-size:20px;letter-spacing:.02em;color:var(--dark)}
.brand__text small{margin-top:5px;font-size:11px;color:var(--muted);letter-spacing:.06em}
.primary-nav{display:flex;align-items:center;justify-content:center;gap:3px;margin-left:auto}
.primary-nav a{position:relative;padding:10px 9px;font-size:14px;color:#4c4d50;border-radius:8px;white-space:nowrap}
.primary-nav a:hover,.primary-nav a[aria-current="page"]{color:var(--brand);background:rgba(185,71,63,.075)}
.primary-nav a[aria-current="page"]::after{content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;background:var(--brand)}
.search-button{border:1px solid var(--dark);background:transparent;border-radius:999px;padding:9px 15px;cursor:pointer;white-space:nowrap;font-size:14px}
.search-button:hover{background:var(--dark);color:#fff}
.menu-button{display:none;width:44px;height:42px;border:0;background:transparent;padding:8px;cursor:pointer}
.menu-button>span:not(.sr-only){display:block;height:2px;background:var(--dark);margin:5px 0;border-radius:2px;transition:.2s ease}
.page-main,.home-main{min-height:60vh}
.breadcrumbs{padding:22px 0 0;font-size:13px;color:var(--muted)}
.breadcrumbs ol{display:flex;align-items:center;flex-wrap:wrap;gap:7px;list-style:none;padding:0;margin:0}
.breadcrumbs li:not(:last-child)::after{content:"/";margin-left:7px;color:#b7aea4}
.breadcrumbs a:hover{color:var(--brand)}
.eyebrow{margin:0 0 10px;color:var(--brand);font-size:13px;font-weight:800;letter-spacing:.13em;text-transform:uppercase}
.lead,.hero-lead{font-size:18px;line-height:1.9;color:#4e4e50;max-width:760px}
h1,h2,h3{color:var(--dark);line-height:1.3;margin-top:0;font-weight:800;letter-spacing:-.025em}
h1{font-size:clamp(34px,4.5vw,64px)}
h2{font-size:clamp(26px,3vw,40px)}
h3{font-size:20px}
p{margin-top:0}
.button-row{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:26px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 19px;border:1px solid transparent;border-radius:999px;font-weight:750;font-size:14px;transition:transform .2s ease,background .2s ease,border-color .2s ease,color .2s ease}
.button:hover{transform:translateY(-1px)}
.button--primary{background:var(--brand);color:#fff}.button--primary:hover{background:#9d3933}
.button--secondary{background:var(--amber);color:var(--dark)}
.button--ghost{border-color:#bbb0a5;background:transparent}.button--ghost:hover{border-color:var(--dark);background:#fff}
.button--light{background:#fff;color:var(--dark)}
.button--text{padding-inline:0;min-height:auto;color:var(--brand);border-radius:0;border-bottom:1px solid rgba(185,71,63,.35)}
.button--full{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:800;border-bottom:1px solid rgba(185,71,63,.28)}
.text-link:hover{border-color:var(--brand)}
.text-link::after{content:"→"}
.section{padding:78px 0}
.section--line{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--soft{background:var(--soft);padding:64px;border-radius:var(--radius-lg)}
.section--warm{background:#f2e4d5;border-radius:var(--radius-lg);padding:64px}
.section--dark{background:var(--dark);color:#ece8e1;border-radius:var(--radius-lg);padding:64px}.section--dark h2,.section--dark h3{color:#fff}.section--dark .eyebrow{color:#f0af67}
.section--band{padding:54px 0}
.section-heading{max-width:760px;margin-bottom:34px}
.section-heading h2{margin-bottom:14px}
.section-heading p:last-child{color:var(--muted);font-size:17px}
.hero{padding:68px 0 80px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(380px,.98fr);gap:60px;align-items:center}
.hero-copy h1{margin-bottom:20px}
.hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin:34px 0 0;border-radius:16px;overflow:hidden}
.hero-points li{background:var(--paper);padding:15px 18px;list-style:none;color:var(--muted);font-size:13px}.hero-points strong{display:block;font-size:14px;color:var(--dark)}.hero-points span{display:block;margin-top:4px;color:var(--muted);font-size:12px}
.hero-media{position:relative;padding:18px 0 18px 18px}
.hero-media::before{content:"";position:absolute;inset:0 50px 0 0;border-radius:34px;background:var(--brand)}
.hero-media img{position:relative;z-index:1;width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:26px;box-shadow:var(--shadow)}
.hero--home{background:linear-gradient(180deg,#fbf8f3 0%,var(--paper) 100%)}
.page-hero{padding:54px 0 70px}
.page-hero--split{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(320px,.72fr);gap:60px;align-items:center}
.page-hero--split h1{font-size:clamp(36px,4vw,58px);margin-bottom:20px}
.page-hero__media{margin:0;position:relative}
.page-hero__media::after{content:"";position:absolute;z-index:-1;left:28px;top:28px;width:100%;height:100%;border:1px solid #cbb8a5;border-radius:22px}
.page-hero__media img{width:100%;aspect-ratio:1.1/1;object-fit:cover;border-radius:22px;box-shadow:var(--shadow)}
.page-hero--compact{max-width:880px;padding-bottom:48px}
.inner-hero{padding:58px 0;border-bottom:1px solid var(--line)}
.inner-hero__grid{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.inner-hero--accent{background:#f2e5d6}
.inner-hero--dark{background:var(--dark);color:#e8e4de}.inner-hero--dark h1{color:#fff}.inner-hero--dark .lead{color:#c9c5be}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.topic-card{padding:26px;border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(255,253,249,.55);transition:.2s ease}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c8b6a4}
.topic-card h3{margin-bottom:9px}.topic-card p{color:var(--muted);margin-bottom:0}
.feature-trio,.feature-list--three{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}
.feature-panel img{width:100%;aspect-ratio:16/10;object-fit:cover}.feature-panel>div{padding:24px}.feature-panel h3{font-size:22px}.feature-panel p{color:var(--muted)}
.feature-list{display:grid;gap:20px}
.feature-list article{padding:28px;border-left:3px solid var(--brand);background:#fbf8f3}
.number-badge{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--brand);color:#fff;font-size:12px;font-weight:800;margin-bottom:16px}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.steps-grid article,.step-item{padding:25px;border-top:3px solid var(--amber);background:var(--white);border-radius:0 0 14px 14px}
.steps-grid span,.step-item>span{display:block;color:var(--brand);font-size:13px;font-weight:900;margin-bottom:15px}.steps-grid p,.step-item p{color:var(--muted);margin-bottom:0}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.article-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;display:flex;flex-direction:column;min-width:0}
.article-card__image{display:block;overflow:hidden}.article-card__image img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease}.article-card:hover .article-card__image img{transform:scale(1.035)}
.article-card__body{padding:22px;display:flex;flex-direction:column;flex:1}.article-card h3{font-size:20px;margin-bottom:10px}.article-card h3 a:hover{color:var(--brand)}.article-card__body>p:not(.meta-line){color:var(--muted);font-size:14px}.article-card .text-link{align-self:flex-start;margin-top:auto}
.meta-line{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--muted);margin-bottom:12px}.meta-line span{color:var(--brand);font-weight:800}
.split-layout,.reading-layout,.comparison-layout,.image-text,.split-panel,.band-layout{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split-layout--reverse,.image-text--reverse{direction:rtl}.split-layout--reverse>*,.image-text--reverse>*{direction:ltr}
.editorial-image,.image-text figure{margin:0}.editorial-image img,.image-text img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg)}
.prose p{font-size:17px;color:#4f4e4d;margin-bottom:20px}.prose p:last-child{margin-bottom:0}
.note-card,.side-panel{padding:30px;border-radius:var(--radius-md);background:#efe3d7;border:1px solid #dac7b4}.note-card h2,.side-panel h2{font-size:24px}.note-card p,.side-panel p{color:#5b544e}
.side-panel--notice{background:#f5e4df;border-color:#e0bbb3}
.comparison-panel{padding:30px;border:1px solid var(--line);border-radius:var(--radius-md);background:#fff}.comparison-panel--dark{background:var(--dark);color:#d7d2ca}.comparison-panel--dark h2,.comparison-panel--dark h3{color:#fff}
.comparison-list{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}.comparison-list>div{background:var(--white);padding:22px}.comparison-list strong{display:block;margin-bottom:6px;color:var(--dark)}.comparison-list p{margin:0;color:var(--muted)}
.domain-display{padding:20px;border-radius:12px;background:var(--dark);color:#fff;font-size:clamp(20px,3vw,34px);font-weight:800;letter-spacing:.01em;overflow-wrap:anywhere}
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.check-grid--five{grid-template-columns:repeat(5,1fr)}.check-grid article{padding:20px;background:var(--white);border:1px solid var(--line);border-radius:14px}.check-grid h3{font-size:17px;margin-bottom:8px}.check-grid p{font-size:14px;color:var(--muted);margin:0}
.check-list{padding:0;margin:24px 0;list-style:none;counter-reset:steps}.check-list li{position:relative;padding:14px 0 14px 46px;border-bottom:1px solid var(--line);counter-increment:steps}.check-list li::before{content:counter(steps,decimal-leading-zero);position:absolute;left:0;top:14px;color:var(--brand);font-size:12px;font-weight:900}
.inline-links{display:flex;flex-wrap:wrap;gap:10px}.inline-links a{padding:9px 13px;background:var(--soft);border-radius:999px;font-size:13px}.inline-links a:hover{background:#e3d9ce;color:var(--brand)}
.numbered-notes{display:grid;gap:16px;counter-reset:note}.numbered-notes article{counter-increment:note;position:relative;padding:24px 24px 24px 76px;border-bottom:1px solid var(--line)}.numbered-notes article::before{content:counter(note,decimal-leading-zero);position:absolute;left:18px;top:20px;color:var(--brand);font-weight:900;font-size:22px}.numbered-notes p{margin:0;color:var(--muted)}
.quote-panel{padding:34px;border-left:5px solid var(--amber);background:var(--soft);font-size:20px}.quote-panel p:last-child{margin-bottom:0}
.guide-preview,.guide-mini-list{display:grid;gap:14px}.guide-mini-list a{display:grid;grid-template-columns:auto 1fr;gap:15px;padding:18px;border:1px solid var(--line);border-radius:14px}.guide-mini-list a:hover{background:#fff}.guide-mini-list span{color:var(--brand);font-weight:900}
.faq-list{max-width:930px;margin-inline:auto}.faq-list details{border-top:1px solid var(--line)}.faq-list details:last-child{border-bottom:1px solid var(--line)}.faq-list summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;font-size:18px;font-weight:800;color:var(--dark)}.faq-list summary::-webkit-details-marker{display:none}.faq-answer{padding:0 48px 22px 0;color:var(--muted)}.faq-marker{font-size:25px;font-weight:400;transition:transform .2s}.faq-list details[open] .faq-marker{transform:rotate(45deg)}
.faq-list--compact{margin:0}.faq-list--compact summary{font-size:16px}
.final-cta{padding:30px 0 80px}.final-cta__inner,.callout-band{display:flex;align-items:center;justify-content:space-between;gap:30px;background:var(--brand);color:#fff;padding:42px 46px;border-radius:var(--radius-lg)}.final-cta h2,.callout-band h2{color:#fff;margin-bottom:10px}.final-cta p,.callout-band p{margin-bottom:0;color:#f6e7e4}.callout-band .eyebrow{color:#ffd59e}
.center-link{text-align:center;margin-top:28px}
.topic-index{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.topic-group{border:1px solid var(--line);border-radius:var(--radius-md);background:var(--white);overflow:hidden}.topic-group__header{display:grid;grid-template-columns:auto 1fr;gap:18px;padding:26px;background:#f2e8de}.topic-group__header h2{font-size:24px;margin-bottom:8px}.topic-group__header p{margin:0;color:var(--muted)}.topic-number{font-size:28px;font-weight:900;color:var(--brand)}
.link-list{list-style:none;margin:0;padding:8px 24px 18px}.link-list li+li{border-top:1px solid var(--line)}.link-list a{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:15px 0;font-weight:700}.link-list a:hover{color:var(--brand)}
.link-panels{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.link-panels a{display:flex;flex-direction:column;gap:6px;min-height:175px;padding:25px;border:1px solid var(--line);border-radius:var(--radius-md);background:#fff}.link-panels a:hover{border-color:var(--brand);box-shadow:var(--shadow)}.link-panels span{font-size:12px;color:var(--brand);font-weight:900;letter-spacing:.08em}.link-panels strong{font-size:21px}.link-panels small{font-size:14px;color:var(--muted);line-height:1.65}
.principle-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.principle-grid article{padding:24px;background:var(--white);border-radius:14px}.principle-grid h3{margin-bottom:8px}.principle-grid p{color:var(--muted);margin:0}
.policy-sections{display:grid;gap:34px}.policy-sections article{padding-bottom:30px;border-bottom:1px solid var(--line)}.policy-sections h2{font-size:27px;margin-bottom:10px}.policy-sections p{font-size:17px;color:var(--muted)}
.wide-media{margin:20px 0 0}.wide-media img{width:100%;max-height:420px;object-fit:cover;border-radius:var(--radius-lg)}
.help-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.help-grid article{padding:25px;border-top:3px solid var(--amber);background:#fff}.help-grid h2{font-size:22px}.help-grid p{color:var(--muted)}
.guide-stack{display:grid;gap:30px}.guide-block{display:grid;grid-template-columns:minmax(280px,.7fr) minmax(0,1.3fr);gap:0;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;overflow:hidden;scroll-margin-top:110px}.guide-block:nth-child(even){grid-template-columns:minmax(0,1.3fr) minmax(280px,.7fr)}.guide-block:nth-child(even) .guide-block__media{order:2}.guide-block__media img{width:100%;height:100%;min-height:430px;object-fit:cover}.guide-block__body{padding:42px}.guide-block__body h2{font-size:30px}
.query-examples{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.query-examples a{padding:18px;border:1px solid var(--line);border-radius:12px;background:#fff}.query-examples strong{display:block;color:var(--brand)}.query-examples span{font-size:13px;color:var(--muted)}.query-examples a:hover{border-color:var(--brand)}
.search-form label{display:block;font-weight:800;margin-bottom:8px}.search-form__row{display:flex;gap:10px}.search-form input{width:100%;min-width:0;height:48px;border:1px solid #bdb4aa;border-radius:999px;padding:0 18px;background:#fff;color:var(--text);outline:none}.search-form input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(185,71,63,.12)}.search-form--page{margin-top:30px;max-width:720px}
.search-results{padding-top:36px}.search-result-list{display:grid;gap:0;border-top:1px solid var(--line)}.search-result-list article{padding:24px 0;border-bottom:1px solid var(--line)}.search-result-list h3{margin-bottom:7px}.search-result-list h3 a:hover{color:var(--brand)}.search-result-list p{color:var(--muted);margin-bottom:10px}
.empty-state{padding:48px;background:var(--soft);border-radius:var(--radius-lg)}.empty-state h2{max-width:720px}.empty-state>p:not(.eyebrow){color:var(--muted);max-width:700px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:50px;padding-top:0}.article-main{min-width:0}.article-sidebar{padding-top:96px}.sticky-card{position:sticky;top:105px;padding:24px;border:1px solid var(--line);border-radius:var(--radius-md);background:#fff}.sticky-card h2{font-size:22px}.sticky-card ul{list-style:none;padding:0;margin:18px 0 0}.sticky-card li+li{border-top:1px solid var(--line)}.sticky-card a{display:block;padding:11px 0}.sticky-card a:hover{color:var(--brand)}
.long-article{padding-bottom:20px}.article-header{padding:48px 0 28px}.article-header h1{font-size:clamp(34px,4vw,54px)}.article-cover{margin:18px 0 44px}.article-cover img{width:100%;max-height:520px;object-fit:cover;border-radius:var(--radius-lg)}.article-section{max-width:760px;margin:0 auto;padding:10px 0 28px}.article-section h2{font-size:29px;margin:26px 0 16px}.article-section p{font-size:17px;line-height:1.95;color:#4c4b4a}.article-footer{max-width:760px;margin:18px auto 0;padding:28px;background:var(--soft);border-radius:14px}.article-footer p{color:var(--muted)}.related-reading{padding-top:48px}
.error-panel{margin:70px 0 100px;padding:58px;border-radius:var(--radius-lg);background:var(--soft)}.error-panel h1{font-size:46px}.error-panel>p:not(.eyebrow){font-size:18px;color:var(--muted)}
.site-footer{margin-top:80px;background:var(--dark);color:#c8c5bf}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:44px;padding:58px 0 46px}.brand--footer .brand__text strong{color:#fff}.brand--footer .brand__text small{color:#9e9c98}.footer-brand p{max-width:390px;font-size:14px;margin-top:18px}.site-footer h2{font-size:15px;color:#fff;letter-spacing:.04em;margin-bottom:15px}.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li+li{margin-top:8px}.site-footer a:hover{color:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:25px;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);font-size:12px}.footer-bottom p{margin:0}.footer-bottom a{white-space:nowrap}
.search-modal[hidden]{display:none!important}
.search-modal{position:fixed;inset:0;z-index:500;display:grid;place-items:center;padding:20px}.search-modal__backdrop{position:absolute;inset:0;background:rgba(30,32,38,.72);backdrop-filter:blur(4px)}.search-modal__panel{position:relative;z-index:1;width:min(100%,680px);background:var(--paper);border-radius:24px;padding:38px;box-shadow:0 28px 80px rgba(0,0,0,.28)}.search-modal__panel h2{font-size:32px;margin-bottom:10px}.search-modal__panel>p:not(.eyebrow){color:var(--muted)}.search-modal__close{position:absolute;right:18px;top:14px;width:38px;height:38px;border:0;background:transparent;font-size:29px;cursor:pointer;border-radius:50%}.search-modal__close:hover{background:var(--soft)}
@media (max-width:1100px){
    .header-row{gap:12px}.brand__text small{display:none}.primary-nav a{padding-inline:6px;font-size:13px}.search-button{padding-inline:12px}
    .hero-grid,.page-hero--split{gap:38px}.article-grid{grid-template-columns:repeat(2,1fr)}.check-grid--five{grid-template-columns:repeat(3,1fr)}
    .footer-grid{grid-template-columns:1.2fr repeat(3,1fr);gap:28px}
}
@media (max-width:920px){
    .container,.narrow{width:min(calc(100% - 32px),var(--max))}
    .menu-button{display:block;margin-left:auto}.search-button{order:3}.primary-nav{position:absolute;left:16px;right:16px;top:70px;display:none;flex-direction:column;align-items:stretch;padding:12px;background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.primary-nav.is-open{display:flex}.primary-nav a{padding:11px 13px}.primary-nav a[aria-current="page"]::after{display:none}
    .hero-grid,.page-hero--split,.inner-hero__grid,.split-layout,.reading-layout,.comparison-layout,.image-text,.split-panel,.band-layout{grid-template-columns:1fr}.hero-grid{gap:26px}.hero-media{max-width:680px}.page-hero__media{max-width:620px}.page-hero__media img{aspect-ratio:16/9}
    .feature-trio,.feature-list--three{grid-template-columns:1fr}.steps-grid{grid-template-columns:repeat(2,1fr)}.topic-grid{grid-template-columns:repeat(2,1fr)}.topic-index{grid-template-columns:1fr}.link-panels,.help-grid{grid-template-columns:1fr}.principle-grid{grid-template-columns:1fr}
    .guide-block,.guide-block:nth-child(even){grid-template-columns:1fr}.guide-block:nth-child(even) .guide-block__media{order:0}.guide-block__media img{min-height:300px;max-height:440px}.guide-block__body{padding:32px}
    .article-layout{grid-template-columns:1fr}.article-sidebar{padding-top:0}.sticky-card{position:static}.footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:680px){
    body{font-size:15px}.container,.narrow{width:min(calc(100% - 24px),var(--max))}.header-row{min-height:68px}.brand img{width:40px;height:40px}.brand__text strong{font-size:18px}.search-button{font-size:0;width:42px;height:42px;padding:0;position:relative}.search-button::after{content:"⌕";font-size:25px;position:absolute;inset:0;display:grid;place-items:center}.primary-nav{top:62px;left:12px;right:12px}
    .hero{padding:44px 0 56px}.hero-grid{grid-template-columns:1fr}.hero-points{grid-template-columns:1fr}.hero-media{padding-left:8px}.hero-media::before{right:24px}.page-hero{padding:38px 0 50px}.page-hero--split h1{font-size:36px}.lead,.hero-lead{font-size:16px}.section{padding:55px 0}.section--soft,.section--warm,.section--dark{padding:32px 22px}.section-heading{margin-bottom:26px}.section-heading p:last-child{font-size:15px}
    .topic-grid,.article-grid,.steps-grid,.query-examples{grid-template-columns:1fr}.check-grid,.check-grid--five{grid-template-columns:1fr}.article-card h3{font-size:19px}.feature-list article{padding:22px}.guide-block__body{padding:25px 20px}.guide-block__body h2{font-size:25px}
    .final-cta__inner,.callout-band{display:block;padding:32px 24px}.final-cta__inner .button,.callout-band .button{margin-top:22px}.page-hero__media::after{left:12px;top:12px}.page-hero__media img{border-radius:16px}.image-text--reverse,.split-layout--reverse{direction:ltr}
    .article-header{padding-top:34px}.article-header h1{font-size:35px}.article-cover{margin-bottom:28px}.article-section h2{font-size:25px}.article-section p{font-size:16px}.article-footer{padding:22px}.article-sidebar{display:none}.wide-media img{border-radius:18px}
    .search-form__row{display:grid}.search-form__row .button{width:100%}.search-modal{padding:12px}.search-modal__panel{padding:30px 20px 22px;border-radius:18px}.search-modal__panel h2{font-size:26px;padding-right:30px}
    .footer-grid{grid-template-columns:1fr;gap:28px;padding-top:44px}.footer-bottom{display:block}.footer-bottom a{display:inline-block;margin-top:12px}.error-panel{padding:32px 22px;margin-top:40px}.error-panel h1{font-size:36px}
}
@media (max-width:390px){
    .container,.narrow{width:min(calc(100% - 20px),var(--max))}.brand__text{display:none}.page-hero--split h1,.article-header h1{font-size:31px}.button-row{align-items:stretch}.button-row .button{width:100%}.topic-group__header{grid-template-columns:1fr}.topic-number{font-size:18px}.link-panels a{min-height:auto}.faq-list summary{font-size:16px}.faq-answer{padding-right:20px}
}