:root{--brand:#6D28D9;--brand-soft:#A78BFA;--ink:#27242D;--muted:#716B78;--deep:#17151C;--paper:#F7F5FA;--panel:#ECE8F2;--accent:#F59E0B;--white:#fff;--line:#DCD6E3;--shadow:0 18px 48px rgba(23,21,28,.09);--radius:18px;--shell:min(1180px,calc(100% - 40px));--narrow:min(780px,calc(100% - 40px));font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);line-height:1.75;overflow-x:hidden}body.modal-open{overflow:hidden}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration-color:rgba(109,40,217,.35);text-underline-offset:3px}a:hover{color:var(--brand)}button,input{font:inherit}.shell{width:var(--shell);margin-inline:auto}.narrow{width:var(--narrow);margin-inline:auto}.skip-link{position:absolute;left:-9999px;top:10px;z-index:99;padding:10px 14px;background:var(--deep);color:#fff}.skip-link:focus{left:10px}.site-header{position:sticky;top:0;z-index:40;background:rgba(247,245,250,.94);border-bottom:1px solid rgba(113,107,120,.18);backdrop-filter:blur(16px)}.header-inner{height:76px;display:flex;align-items:center;gap:24px}.brand-mark{display:flex;align-items:center;gap:10px;text-decoration:none;min-width:220px}.brand-mark img{width:42px;height:42px;object-fit:contain}.brand-mark span{display:grid;line-height:1.15}.brand-mark strong{font-size:20px;color:var(--deep)}.brand-mark small{font-size:12px;color:var(--muted);margin-top:4px}.site-nav{display:flex;align-items:center;gap:6px;margin-left:auto}.site-nav a{padding:9px 11px;border-radius:10px;text-decoration:none;font-size:14px}.site-nav a[aria-current=page]{background:var(--panel);color:var(--brand);font-weight:700}.search-open,.menu-toggle{border:1px solid var(--line);background:#fff;color:var(--deep);border-radius:12px;padding:9px 13px;cursor:pointer}.search-open:hover,.menu-toggle:hover{border-color:var(--brand);color:var(--brand)}.menu-toggle{display:none}.search-modal[hidden]{display:none!important}.search-modal{position:fixed;inset:0;z-index:80;background:rgba(23,21,28,.72);display:grid;place-items:start center;padding:11vh 20px}.search-modal__panel{position:relative;width:min(680px,100%);padding:32px;background:#fff;border-radius:22px;box-shadow:0 30px 90px rgba(0,0,0,.3)}.search-modal__panel h2{margin:0 0 8px;font-size:28px}.search-modal__panel p{color:var(--muted);margin:0 0 24px}.search-close{position:absolute;right:18px;top:16px;border:0;background:transparent;font-size:30px;line-height:1;cursor:pointer}.search-form label{display:block;font-size:13px;font-weight:700;margin-bottom:6px;color:var(--deep)}.search-form>div{display:flex;gap:8px}.search-form input{flex:1;min-width:0;border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--paper)}.search-form button{border:0;background:var(--brand);color:#fff;border-radius:12px;padding:12px 18px;font-weight:700;cursor:pointer}.home-lead{padding:46px 0 34px;background:linear-gradient(180deg,#F2EEF8 0,#F7F5FA 100%)}.lead-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}.eyebrow{margin:0 0 10px;color:var(--brand);font-size:13px;letter-spacing:.11em;font-weight:800;text-transform:uppercase}.lead-copy h1,.page-intro h1,.video-intro h1,.guide-cover h1,.dimension-hero h1{font-size:clamp(38px,5vw,66px);line-height:1.08;letter-spacing:-.035em;margin:0;color:var(--deep);max-width:980px}.lead-text{font-size:18px;color:#4F4955;max-width:720px;margin:22px 0}.lead-actions,.button-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:12px;font-weight:800;text-decoration:none;border:1px solid transparent}.button.primary{background:var(--brand);color:#fff}.button.secondary{background:#fff;border-color:var(--line);color:var(--deep)}.button.text{color:var(--brand);padding-inline:8px}.button.light{background:#fff;color:var(--deep)}.button.outline-light{border-color:rgba(255,255,255,.35);color:#fff}.lead-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin:28px 0 0;border-top:1px solid var(--line)}.lead-facts div{padding:18px 16px 0 0}.lead-facts dt{font-weight:800;color:var(--deep);font-size:13px}.lead-facts dd{margin:4px 0 0;color:var(--muted);font-size:13px}.lead-visual{margin:0}.lead-visual img{width:100%;aspect-ratio:1.25/1;object-fit:cover;border-radius:28px;box-shadow:var(--shadow)}.lead-visual figcaption{font-size:12px;color:var(--muted);margin-top:9px}.section{padding:76px 0}.section-compact{padding-top:46px}.section-tint{background:var(--panel)}.section-dark{background:var(--deep);color:#fff}.split-heading{display:grid;grid-template-columns:1fr .8fr;gap:70px;align-items:end;margin-bottom:28px}.split-heading h2,.section-heading h2,.two-column-copy h2,.index-aside h2,.topic-afterthought h2,.closing-map h2,.content-block h2,.compact-cta h2,.about-layout h2,.safety-grid h2,.prose h2{font-size:clamp(28px,3vw,42px);line-height:1.18;letter-spacing:-.025em;margin:0;color:var(--deep)}.split-heading>p,.section-heading>p,.two-column-copy p,.index-aside p,.topic-afterthought p{color:var(--muted);margin:0}.route-index{display:grid;grid-template-columns:1fr 1.12fr;gap:14px}.route-major{display:grid;grid-template-columns:auto 1fr;column-gap:22px;align-items:start;padding:28px;background:#fff;border:1px solid var(--line);border-radius:20px;text-decoration:none}.route-major>span{grid-row:1/4;font-size:13px;font-weight:900;color:var(--brand);padding-top:4px}.route-major strong{font-size:24px;color:var(--deep)}.route-major p{margin:8px 0;color:var(--muted)}.route-major em{font-style:normal;color:var(--brand);font-weight:700;font-size:14px}.route-major--dark{background:var(--deep);border-color:var(--deep)}.route-major--dark strong,.route-major--dark p,.route-major--dark em{color:#fff}.route-major--dark p{color:#CFC9D6}.video-band{padding-top:80px}.video-band__top{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:22px}.video-band__top h2{font-size:clamp(30px,4vw,48px);line-height:1.14;margin:0;color:var(--deep)}.video-band__top>a{color:var(--brand);font-weight:800}.feature-strip{display:grid;grid-template-columns:.92fr 1.08fr;gap:26px}.feature-strip figure{margin:0}.feature-strip figure img{height:100%;min-height:430px;width:100%;object-fit:cover;border-radius:20px}.feature-strip figcaption{font-size:12px;color:var(--muted);margin-top:8px}.compact-list{border-top:1px solid var(--line)}.compact-list article{display:grid;grid-template-columns:82px 1fr;column-gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}.compact-list span{grid-row:1/3;font-size:12px;color:var(--muted);padding-top:5px}.compact-list h3{margin:0;font-size:18px;line-height:1.35}.compact-list h3 a{text-decoration:none}.compact-list p{margin:6px 0 0;font-size:14px;color:var(--muted);line-height:1.6}.two-column-copy{display:grid;grid-template-columns:1fr .88fr;gap:60px;align-items:center}.two-column-copy.reverse{grid-template-columns:.88fr 1fr}.two-column-copy img{border-radius:18px;box-shadow:var(--shadow)}.text-link{display:inline-block;margin-top:12px;color:var(--brand);font-weight:800}.index-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:66px}.index-aside{position:sticky;top:110px;align-self:start}.index-aside>a{display:inline-block;margin-top:16px;color:var(--brand);font-weight:800}.index-groups{display:grid;gap:28px}.index-groups section{display:grid;grid-template-columns:180px 1fr;gap:18px 28px;border-top:1px solid var(--line);padding-top:18px}.index-groups h3{margin:0;font-size:18px}.index-groups a{display:block;text-decoration:none;margin-bottom:10px}.topic-afterthought{padding-top:40px}.topic-afterthought__inner{display:grid;grid-template-columns:.72fr 1fr;gap:48px;align-items:center;border-top:1px solid var(--line);padding-top:48px}.topic-afterthought figure{margin:0}.topic-afterthought img{border-radius:18px}.closing-map{display:grid;grid-template-columns:1fr 1.2fr;gap:70px;align-items:start}.closing-map h2{color:#fff}.section-dark .eyebrow{color:var(--brand-soft)}.closing-links{display:grid;grid-template-columns:1fr 1fr;gap:12px}.closing-links a{padding:16px;border:1px solid rgba(255,255,255,.16);border-radius:12px;text-decoration:none;color:#fff}.closing-links a:hover{border-color:var(--brand-soft);color:#fff}.page-main{min-height:70vh}.breadcrumb{padding-top:20px;font-size:13px;color:var(--muted)}.breadcrumb ol{list-style:none;display:flex;gap:10px;padding:0;margin:0;flex-wrap:wrap}.breadcrumb li:not(:last-child)::after{content:'›';margin-left:10px;color:#A19AA7}.breadcrumb a{text-decoration:none}.page-intro{padding:54px 0 32px}.page-intro .narrow{text-align:left}.page-intro h1{font-size:clamp(36px,4.5vw,58px)}.page-intro p:last-child{font-size:18px;color:var(--muted);margin:20px 0 0}.brand-proof{display:grid;grid-template-columns:1fr .78fr;gap:56px;align-items:center}.brand-proof h2{font-size:36px;margin:0 0 16px;color:var(--deep)}.brand-proof p{color:var(--muted)}.brand-proof img{border-radius:20px}.three-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.three-notes article{padding:28px;background:rgba(255,255,255,.58);border:1px solid rgba(113,107,120,.14);border-radius:16px}.three-notes span{font-size:12px;color:var(--brand);font-weight:900}.three-notes h2{font-size:22px;line-height:1.25;margin:9px 0}.three-notes p{color:var(--muted);margin:0}.section-heading{max-width:760px;margin-bottom:30px}.section-heading h2{margin-bottom:10px}.editor-list{display:grid;gap:0;border-top:1px solid var(--line)}.editor-row{display:grid;grid-template-columns:180px 1fr;column-gap:30px;padding:25px 0;border-bottom:1px solid var(--line)}.editor-row__meta{grid-row:1/4;display:grid;align-content:start;gap:5px;font-size:12px;color:var(--muted)}.editor-row__meta span{color:var(--brand);font-weight:800}.editor-row h3{margin:0;font-size:21px;line-height:1.35}.editor-row h3 a{text-decoration:none}.editor-row p{margin:8px 0;color:var(--muted)}.tagline{display:flex;flex-wrap:wrap;gap:7px}.tagline span{font-size:11px;padding:3px 8px;background:var(--panel);border-radius:999px;color:#554F5C}.section-tint .tagline span{background:#fff}.compact-cta{display:flex;justify-content:space-between;align-items:center;gap:30px}.compact-cta h2{color:#fff;font-size:32px}.compact-cta p{color:#C7C0CD;margin:8px 0 0}.compact-cta.bordered{border:1px solid var(--line);border-radius:18px;padding:28px}.compact-cta.bordered h2{color:var(--deep)}.compact-cta.bordered p{color:var(--muted)}.video-intro{padding:46px 0 36px;background:var(--deep);color:#fff}.video-intro__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}.video-intro h1{color:#fff;font-size:clamp(38px,5vw,62px)}.video-intro p{color:#CFC9D6;font-size:17px}.video-intro figure{margin:0}.video-intro figure img{border-radius:24px;min-height:430px;object-fit:cover}.video-intro figcaption{font-size:12px;color:#AFA7B7;margin-top:8px}.inline-search{margin-top:26px}.inline-search label{display:block;font-size:12px;font-weight:800;margin-bottom:6px;color:var(--brand-soft)}.inline-search>div{display:flex}.inline-search input{flex:1;min-width:0;padding:12px 14px;border:1px solid #4B4551;border-radius:12px 0 0 12px;background:#242129;color:#fff}.inline-search button{border:0;background:var(--accent);color:#1E1708;padding:12px 16px;border-radius:0 12px 12px 0;font-weight:900}.video-columns{display:grid;grid-template-columns:260px 1fr;gap:56px}.video-columns aside{position:sticky;top:110px;align-self:start;display:grid;gap:8px}.video-columns aside h2{margin:0 0 10px;font-size:24px}.video-columns aside a{padding:10px 0;border-bottom:1px solid var(--line);text-decoration:none}.content-block{padding:0 0 34px;margin-bottom:34px;border-bottom:1px solid var(--line)}.content-block h2{font-size:32px}.content-block p{color:var(--muted);font-size:17px}.definition-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.definition-grid article{padding:28px;border:1px solid var(--line);border-radius:18px;background:#fff}.definition-grid strong{font-size:22px;color:var(--deep)}.definition-grid p{color:var(--muted);margin:8px 0 0}.dimension-hero{padding:56px 0;background:#EEE9F6}.dimension-hero__inner{display:grid;grid-template-columns:1fr .68fr;gap:56px;align-items:center}.dimension-hero h1{font-size:clamp(38px,4.8vw,60px)}.dimension-hero p{font-size:17px;color:var(--muted)}.dimension-hero img{border-radius:24px}.topic-directory{display:grid;gap:14px}.topic-directory__group{display:grid;grid-template-columns:.7fr 1.3fr;gap:48px;padding:30px;border:1px solid var(--line);border-radius:18px;background:#fff}.topic-directory__group>div:first-child{display:grid;grid-template-columns:44px 1fr;align-content:start}.topic-directory__group span{grid-row:1/3;font-size:12px;color:var(--brand);font-weight:900}.topic-directory__group h2{margin:0;font-size:26px}.topic-directory__group p{grid-column:2;margin:8px 0 0;color:var(--muted)}.topic-directory__group>div:last-child{display:grid;gap:9px}.topic-directory__group a{text-decoration:none;padding-bottom:9px;border-bottom:1px solid var(--line)}.guide-cover{padding:48px 0;background:linear-gradient(90deg,#EFEAF7,#F7F5FA)}.guide-cover__grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center}.guide-cover figure{margin:0}.guide-cover img{border-radius:24px}.guide-cover h1{font-size:clamp(36px,4.6vw,58px)}.guide-cover p{color:var(--muted);font-size:17px}.process-line{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.process-line article{padding:26px 24px;border-right:1px solid var(--line)}.process-line article:last-child{border-right:0}.process-line span{font-size:12px;font-weight:900;color:var(--brand)}.process-line h2{font-size:20px;margin:8px 0}.process-line p{font-size:14px;color:var(--muted);margin:0}.brief-grid{display:grid;gap:10px}.brief-grid details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 18px}.brief-grid summary{cursor:pointer;font-weight:800;padding:14px 0;color:var(--deep)}.brief-grid p{color:var(--muted)}.article-page{padding-bottom:76px}.article-header{max-width:980px;padding-top:48px}.article-header h1{font-size:clamp(36px,5vw,64px);line-height:1.1;letter-spacing:-.03em;margin:0;color:var(--deep)}.article-deck{font-size:19px;color:var(--muted);max-width:820px}.article-meta{display:flex;gap:18px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px}.article-layout{display:grid;grid-template-columns:minmax(0,780px) 280px;gap:58px;align-items:start;margin-top:36px}.article-body{font-size:17px}.article-body p{margin:0 0 1.35em}.article-body h2{font-size:30px;line-height:1.2;margin:2em 0 .8em;color:var(--deep)}.article-image{margin:0 0 32px}.article-image img{width:100%;aspect-ratio:1.65/1;object-fit:cover;border-radius:20px}.article-aside{position:sticky;top:110px;display:grid;gap:14px}.aside-box{padding:20px;border:1px solid var(--line);background:#fff;border-radius:15px}.aside-box h2{font-size:17px;margin:0 0 12px}.aside-box ul{padding-left:18px;margin:0;color:var(--muted);font-size:13px}.aside-box a{display:block;padding:8px 0;border-top:1px solid var(--line);font-size:13px;text-decoration:none}.article-next{margin-top:44px;padding:28px;background:var(--panel);border-radius:18px}.article-next h2{font-size:24px;margin:0}.article-next p{color:var(--muted)}.article-next>div{display:flex;flex-wrap:wrap;gap:10px}.article-next a{padding:8px 10px;border-radius:9px;background:#fff;text-decoration:none;font-size:13px}.search-page{padding:56px 0 24px}.search-page h1{font-size:clamp(36px,4.8vw,56px);line-height:1.1;margin:0 0 24px;color:var(--deep)}.search-form--page{margin-top:20px}.search-note{color:var(--muted)}.empty-state{padding:36px;background:#fff;border:1px solid var(--line);border-radius:18px}.empty-state h2{margin-top:0}.faq-list{max-width:900px}.faq-list details{border-top:1px solid var(--line);padding:18px 0}.faq-list details:last-child{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;font-size:19px;font-weight:800;color:var(--deep)}.faq-list p{color:var(--muted);max-width:760px}.about-layout,.safety-grid,.contact-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:start}.about-layout figure,.safety-grid figure,.contact-grid figure{margin:0}.about-layout img,.safety-grid img,.contact-grid img{border-radius:20px}.about-layout h2,.safety-grid h2{font-size:26px;margin:0 0 8px}.about-layout p,.safety-grid p{color:var(--muted);margin-top:0}.safety-grid article:first-child{position:sticky;top:110px}.prose{max-width:860px}.prose h2{font-size:28px;margin-top:36px}.prose p{color:var(--muted)}code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#E8E2F0;padding:2px 5px;border-radius:5px}.check-list{padding-left:20px;color:var(--muted)}.feedback-template{white-space:pre-wrap;background:var(--deep);color:#EAE5EF;padding:20px;border-radius:14px;overflow:auto}.not-found{min-height:68vh;display:grid;place-items:center;padding:70px 0}.not-found__inner{max-width:760px;text-align:center}.error-code{font-size:92px;font-weight:900;line-height:1;color:var(--brand);margin:0}.not-found h1{font-size:42px;line-height:1.15;margin:18px 0}.not-found p{color:var(--muted)}.not-found .button-row{justify-content:center}.site-footer{background:#211E25;color:#DCD6E3;padding:56px 0 22px}.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:56px}.footer-grid h2{font-size:17px;color:#fff;margin:0 0 14px}.footer-grid p{color:#AAA2B0;max-width:460px;margin:0}.footer-grid nav{display:grid;align-content:start;gap:8px}.footer-grid a{color:#C7C0CD;text-decoration:none;font-size:14px}.footer-grid a:hover{color:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:18px;color:#8F8796;font-size:12px}.back-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border:0;border-radius:50%;background:var(--brand);color:#fff;box-shadow:var(--shadow);opacity:0;transform:translateY(10px);pointer-events:none;transition:.2s;cursor:pointer}.back-top.is-visible{opacity:1;transform:none;pointer-events:auto}@media(max-width:1024px){.site-nav{gap:0}.site-nav a{padding-inline:8px}.lead-grid,.feature-strip,.brand-proof,.video-intro__grid,.guide-cover__grid{gap:34px}.article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:36px}.route-index{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.2fr .8fr .8fr;gap:34px}}@media(max-width:900px){:root{--shell:min(100% - 30px,1180px);--narrow:min(100% - 30px,780px)}.menu-toggle{display:inline-flex;margin-left:auto}.site-nav{position:absolute;left:15px;right:15px;top:70px;display:none;padding:12px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.site-nav.is-open{display:grid}.site-nav a{padding:11px}.search-open{padding:8px 10px}.lead-grid,.feature-strip,.two-column-copy,.two-column-copy.reverse,.index-layout,.topic-afterthought__inner,.closing-map,.video-intro__grid,.video-columns,.dimension-hero__inner,.guide-cover__grid,.about-layout,.safety-grid,.contact-grid{grid-template-columns:1fr}.lead-visual{order:-1}.lead-visual img{max-height:400px}.feature-strip figure img{min-height:320px;max-height:420px}.index-aside,.video-columns aside,.article-aside,.safety-grid article:first-child{position:static}.video-columns aside{grid-template-columns:1fr 1fr}.article-layout{grid-template-columns:1fr}.article-aside{grid-template-columns:1fr 1fr}.process-line{grid-template-columns:1fr 1fr}.process-line article:nth-child(2){border-right:0}.process-line article:nth-child(-n+2){border-bottom:1px solid var(--line)}.topic-directory__group{grid-template-columns:1fr;gap:24px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>section{grid-column:1/-1}.split-heading{grid-template-columns:1fr;gap:12px}.section{padding:58px 0}}@media(max-width:640px){.header-inner{height:66px;gap:10px}.brand-mark{min-width:0}.brand-mark small{display:none}.brand-mark img{width:36px;height:36px}.search-open{font-size:0}.search-open::after{content:'搜索';font-size:13px}.lead-copy h1,.page-intro h1,.video-intro h1,.guide-cover h1,.dimension-hero h1{font-size:36px}.lead-grid{gap:24px}.lead-facts{grid-template-columns:1fr}.lead-facts div{padding:11px 0;border-bottom:1px solid var(--line)}.route-index{grid-template-columns:1fr}.route-major{padding:22px}.video-band__top{align-items:start;flex-direction:column}.compact-list article{grid-template-columns:1fr}.compact-list span{grid-row:auto}.two-column-copy{gap:28px}.index-groups section{grid-template-columns:1fr}.closing-links{grid-template-columns:1fr}.three-notes,.definition-grid{grid-template-columns:1fr}.editor-row{grid-template-columns:1fr;padding:20px 0}.editor-row__meta{grid-row:auto;grid-template-columns:1fr auto;margin-bottom:8px}.video-columns aside{grid-template-columns:1fr}.process-line{grid-template-columns:1fr}.process-line article{border-right:0!important;border-bottom:1px solid var(--line)}.process-line article:last-child{border-bottom:0}.article-header{padding-top:34px}.article-header h1{font-size:36px}.article-layout{margin-top:22px}.article-aside{grid-template-columns:1fr}.topic-directory__group{padding:22px}.footer-grid{grid-template-columns:1fr}.footer-grid>section{grid-column:auto}.footer-bottom{flex-direction:column}.compact-cta{align-items:flex-start;flex-direction:column}.section{padding:46px 0}.page-intro{padding-top:40px}.search-modal{padding-top:7vh}.search-modal__panel{padding:24px 20px}.search-form>div{flex-direction:column}.search-form button{width:100%}.article-next>div{display:grid}.brand-proof{gap:26px}}@media(max-width:420px){:root{--shell:calc(100% - 24px);--narrow:calc(100% - 24px)}.brand-mark strong{font-size:17px}.menu-toggle{padding:7px 9px}.lead-actions,.button-row{display:grid;grid-template-columns:1fr;width:100%}.button{width:100%}.lead-copy h1,.page-intro h1,.video-intro h1,.guide-cover h1,.dimension-hero h1{font-size:32px}.route-major{grid-template-columns:1fr}.route-major>span{grid-row:auto}.topic-directory__group>div:first-child{grid-template-columns:34px 1fr}.article-body{font-size:16px}.not-found h1{font-size:34px}}