:root{--bg:#fff;--sub:#f7faff;--soft:#edf5ff;--gray:#f5f6f8;--title:#172033;--text:#3e4859;--muted:#6f7a89;--light:#98a1af;--blue:#1478f2;--blue2:#2f8cff;--deep:#075dc9;--dark:#084a9c;--line:rgba(20,120,242,.12);--gline:rgba(30,50,70,.08);--shadow:0 14px 38px rgba(21,67,118,.08);--bshadow:0 16px 42px rgba(20,120,242,.15);--radius:18px;--nav:74px;--max:1280px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.72;overflow-x:hidden}body.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{color:inherit}img{display:block;max-width:100%;height:auto}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--title);line-height:1.25}h1{font-size:clamp(2rem,4vw,3.55rem);letter-spacing:-.04em}h2{font-size:clamp(1.45rem,2.3vw,2.1rem);letter-spacing:-.025em}h3{font-size:1.08rem}.shell{width:min(calc(100% - 40px),var(--max));margin-inline:auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:300;background:var(--title);color:#fff;padding:10px 14px;border-radius:10px}.skip-link:focus{top:10px}.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom:1px solid var(--gline)}.desktop-nav{height:var(--nav);display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:22px}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap}.brand-logo{max-width:128px;max-height:42px;width:auto}.brand-text{font-weight:900;font-size:1.28rem;color:var(--blue);letter-spacing:-.04em}.brand-tag{font-size:.72rem;color:var(--blue);background:var(--soft);border-radius:999px;padding:4px 8px}.main-nav{display:flex;justify-content:center;align-items:center;gap:3px;min-width:0;white-space:nowrap}.main-nav a,.utility-link{display:inline-flex;align-items:center;min-height:44px;padding:0 10px;border-radius:12px;font-size:.91rem;font-weight:650;color:#445064}.main-nav a:hover,.utility-link:hover,.main-nav a.is-current,.utility-link.is-current{color:var(--blue);background:var(--soft)}.nav-actions{display:flex;align-items:center;gap:3px;white-space:nowrap}.icon-button,.mobile-square{border:0;background:transparent;min-width:44px;min-height:44px;border-radius:12px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:5px}.icon-button:hover,.mobile-square:hover{background:var(--soft);color:var(--blue)}.icon-button span:first-child{font-size:1.2rem}.mobile-nav{display:none}.site-main{min-height:60vh}.section{padding:76px 0}.section.compact{padding:46px 0}.section.soft{background:var(--sub)}.section.blue-soft{background:var(--soft)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}.section-head p{max-width:650px;color:var(--muted);margin-bottom:4px}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:.83rem;font-weight:800;letter-spacing:.08em;margin-bottom:10px}.eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--blue2);box-shadow:0 0 0 5px rgba(47,140,255,.1)}.text-link{color:var(--blue);font-weight:750}.text-link:hover{text-decoration:underline}.primary-link{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:13px;color:#fff;background:linear-gradient(135deg,#3a96ff 0%,#1478f2 55%,#0863d3 100%);box-shadow:var(--bshadow);font-weight:800}.primary-link:hover{transform:translateY(-1px);box-shadow:0 18px 46px rgba(20,120,242,.2)}.primary-link:active{transform:none}.page-hero{padding:70px 0 42px;background:linear-gradient(180deg,var(--sub),#fff)}.page-hero .hero-copy{max-width:880px}.page-hero p{font-size:1.06rem;color:var(--muted);max-width:760px}.page-kicker{display:inline-flex;color:var(--blue);background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:6px 11px;font-size:.78rem;font-weight:750;margin-bottom:14px}.card{background:#fff;border:1px solid var(--gline);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.card p:last-child{margin-bottom:0}.tag{display:inline-flex;padding:4px 9px;border-radius:999px;background:var(--soft);color:var(--blue);font-size:.75rem;font-weight:750}.meta{font-size:.78rem;color:var(--muted)}.channel-strip{border-block:1px solid var(--gline);background:#fff}.channel-scroll{display:flex;gap:28px;align-items:center;overflow-x:auto;scrollbar-width:none;padding:15px 0}.channel-scroll::-webkit-scrollbar{display:none}.channel-scroll a{white-space:nowrap;font-weight:700;color:#506078;display:inline-flex;align-items:center;gap:7px}.channel-scroll a:before{content:"";width:6px;height:6px;border-radius:50%;background:#b8d7ff}.channel-scroll a:hover,.channel-scroll a.is-current{color:var(--blue)}.channel-scroll a:hover:before,.channel-scroll a.is-current:before{background:var(--blue)}
.hero-editor{padding:46px 0 32px;background:radial-gradient(circle at 50% 10%,#edf6ff 0,transparent 42%),#fff}.editor-grid{display:grid;grid-template-columns:.92fr 1.42fr .9fr;gap:20px;align-items:stretch}.editor-intro,.editor-side{border:1px solid var(--gline);border-radius:22px;padding:28px;background:#fff}.editor-intro h1{font-size:clamp(2.15rem,3.2vw,3.25rem);margin-bottom:20px}.editor-intro p{color:var(--muted)}.hero-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:24px}.brand-banner{position:relative;min-height:460px;border-radius:24px;overflow:hidden;background:linear-gradient(145deg,#0e78ef,#075dc9);color:#fff;padding:34px;display:flex;flex-direction:column;justify-content:flex-end;box-shadow:var(--bshadow)}.brand-banner:before,.brand-banner:after{content:"";position:absolute;border-radius:50%;pointer-events:none}.brand-banner:before{width:330px;height:330px;right:-90px;top:-100px;border:80px solid rgba(255,255,255,.08)}.brand-banner:after{width:180px;height:180px;left:40px;top:70px;background:rgba(255,255,255,.06)}.brand-banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#eaf4ff}.banner-copy{position:relative;z-index:2}.banner-copy strong{display:block;font-size:2rem;line-height:1.15;margin-bottom:8px}.banner-copy span{opacity:.86}.editor-side{display:grid;gap:12px}.quick-entry{display:block;padding:17px;border:1px solid var(--gline);border-radius:15px;background:var(--sub)}.quick-entry:hover{border-color:var(--line);background:var(--soft)}.quick-entry strong{display:block;color:var(--title);margin-bottom:5px}.quick-entry span{display:block;font-size:.86rem;color:var(--muted)}.overview-grid{display:grid;grid-template-columns:1.35fr .85fr 1.12fr .76fr;gap:16px}.overview-grid article{min-height:190px}.overview-grid p{color:var(--muted)}.discussion-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr;gap:18px}.discussion-main{grid-row:span 2;background:linear-gradient(145deg,#f8fbff,#edf5ff);padding:32px}.discussion-main p{font-size:1.01rem}.discussion-item{padding:22px}.map-board{display:grid;grid-template-columns:1.2fr .85fr .95fr;grid-auto-rows:minmax(170px,auto);gap:16px}.map-board article:nth-child(1){grid-row:span 2;background:var(--soft)}.map-board article:nth-child(4){grid-column:span 2}.magazine-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}.magazine-grid article{grid-column:span 4}.magazine-grid article:nth-child(1),.magazine-grid article:nth-child(5){grid-column:span 5}.magazine-grid article:nth-child(2),.magazine-grid article:nth-child(6){grid-column:span 3}.magazine-grid p{color:var(--muted)}.route-list{display:grid;gap:1px;border:1px solid var(--gline);border-radius:20px;overflow:hidden;background:var(--gline)}.route-step{display:grid;grid-template-columns:90px 1fr 220px;gap:24px;align-items:start;background:#fff;padding:25px}.route-no{font-weight:900;font-size:1.7rem;color:#b7d7ff}.route-step aside{background:var(--sub);border-radius:12px;padding:13px;font-size:.84rem;color:var(--muted)}.interest-wall{display:flex;flex-wrap:wrap;gap:14px}.interest-tile{flex:1 1 260px;min-height:180px;padding:24px;border-radius:20px;border:1px solid var(--gline);background:#fff}.interest-tile:nth-child(3n+1){flex-basis:330px;background:var(--soft)}.interest-tile:nth-child(4n){flex-basis:220px;background:var(--sub)}.interest-tile p{color:var(--muted)}.qa-list{border-top:1px solid var(--gline)}.qa-item{display:grid;grid-template-columns:50px minmax(220px,.75fr) 1.5fr auto;gap:20px;padding:25px 0;border-bottom:1px solid var(--gline);align-items:start}.qa-mark{font-weight:900;color:var(--blue);font-size:1.2rem}.qa-item h3{margin:0}.qa-item p{margin:0;color:var(--muted)}.story-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:22px}.story-main{padding:34px;background:linear-gradient(180deg,var(--sub),#fff)}.story-list{display:grid;gap:14px}.story-list article{padding:22px;border-bottom:1px solid var(--gline)}.waterfall{columns:3 280px;column-gap:18px}.waterfall article{break-inside:avoid;margin:0 0 18px;padding:24px;border:1px solid var(--gline);border-radius:18px;background:#fff}.waterfall article:nth-child(3n){background:var(--sub)}.topic-index{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.topic-card{padding:28px;border-left:4px solid #cfe4ff;background:#fff;border-radius:0 18px 18px 0;box-shadow:var(--shadow)}.topic-card:hover{border-left-color:var(--blue)}.topic-boundary{font-size:.83rem;color:var(--muted);padding-top:12px;border-top:1px dashed var(--gline)}.guide-list{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--gline);border:1px solid var(--gline);border-radius:20px;overflow:hidden}.guide-list article{background:#fff;padding:28px}.guide-list article:nth-child(4n+1),.guide-list article:nth-child(4n){background:var(--sub)}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.principle{position:relative;overflow:hidden;min-height:220px}.principle:after{content:attr(data-no);position:absolute;right:12px;bottom:-32px;font-size:6.5rem;font-weight:900;color:rgba(20,120,242,.06);line-height:1}.process-line{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.process-line div{padding:20px;border-top:3px solid #d9eafe;background:var(--sub);border-radius:0 0 14px 14px}.notice-list{border:1px solid var(--gline);border-radius:20px;overflow:hidden}.notice-row{display:grid;grid-template-columns:145px 1fr auto;gap:22px;padding:24px;background:#fff;border-bottom:1px solid var(--gline)}.notice-row:last-child{border-bottom:0}.notice-type{color:var(--blue);font-weight:800}.app-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center;padding:64px 0}.app-visual{min-height:500px;border-radius:28px;background:linear-gradient(150deg,#edf5ff,#d9eafe);display:grid;place-items:center;overflow:hidden;position:relative}.app-visual img{max-height:480px;object-fit:contain}.app-visual .phone-fallback{width:230px;height:440px;border:12px solid #172033;border-radius:42px;background:#fff;box-shadow:var(--bshadow);padding:40px 18px 18px;position:relative}.phone-fallback:before{content:"";position:absolute;top:12px;left:50%;transform:translateX(-50%);width:72px;height:18px;border-radius:20px;background:#172033}.phone-screen{height:100%;border-radius:22px;background:linear-gradient(180deg,#1478f2 0 32%,#f7faff 32%);padding:32px 15px;color:#fff}.app-services{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:24px 0}.app-services div{padding:15px;background:var(--sub);border-radius:14px}.risk-grid,.privacy-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.risk-card,.privacy-card{padding:26px;border-radius:18px;border:1px solid var(--gline);background:#fff}.risk-card:nth-child(2n),.privacy-card:nth-child(3n){background:var(--sub)}.risk-card h3,.privacy-card h3{display:flex;gap:10px}.risk-card h3 span,.privacy-card h3 span{color:var(--blue)}.rule-directory{display:grid;grid-template-columns:250px 1fr;gap:30px}.rule-nav{position:sticky;top:96px;align-self:start;padding:16px;background:var(--sub);border-radius:16px}.rule-nav a{display:block;padding:10px 12px;border-radius:10px;font-weight:700}.rule-nav a:hover{background:var(--soft);color:var(--blue)}.rule-content article{padding:8px 0 30px;margin-bottom:28px;border-bottom:1px solid var(--gline);scroll-margin-top:100px}.help-categories{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.help-category{min-height:190px;padding:22px;border:1px solid var(--gline);border-radius:18px;background:#fff}.help-category:nth-child(odd){background:var(--sub)}.faq-list{display:grid;gap:10px}.faq-list details{border:1px solid var(--gline);border-radius:15px;background:#fff;padding:0 20px}.faq-list summary{cursor:pointer;list-style:none;padding:19px 34px 19px 0;font-weight:800;color:var(--title);position:relative}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";position:absolute;right:4px;color:var(--blue);font-size:1.4rem;top:13px}.faq-list details[open] summary:after{content:"−"}.faq-list details p{color:var(--muted);padding:0 0 20px;margin:0}.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.contact-grid article{min-height:190px}.feedback-note{padding:24px;border-left:4px solid var(--blue);background:var(--soft);border-radius:0 16px 16px 0}.brand-manifesto{padding:60px;border-radius:28px;background:#0d68d2;color:#eaf3ff;position:relative;overflow:hidden}.brand-manifesto:after{content:"HAI JIAO";position:absolute;right:-14px;bottom:-30px;font-size:7rem;font-weight:900;opacity:.06;line-height:1}.brand-manifesto h2{color:#fff;max-width:800px}.brand-manifesto p{max-width:900px;position:relative;z-index:1}
.site-footer{background:#0b1f38;color:#eaf3ff;padding:64px 0 28px}.footer-brand-row{display:grid;grid-template-columns:1.05fr 1.6fr;gap:60px}.footer-brand{max-width:440px}.footer-brand>a{display:inline-block;margin-bottom:16px}.footer-logo{max-width:150px;max-height:48px;object-fit:contain}.footer-brand-name{font-size:1.5rem;font-weight:900}.footer-brand>div strong,.footer-brand>div span{display:block}.footer-brand>div strong{font-size:1.25rem;color:#fff}.footer-brand>div span{font-size:.72rem;letter-spacing:.13em;color:#a9c6e9}.footer-brand p{color:#bfd1e5;font-size:.9rem}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.footer-links h2{font-size:.88rem;color:#fff;margin-bottom:15px}.footer-links a{display:block;color:#bdd0e4;font-size:.88rem;padding:4px 0}.footer-links a:hover{color:#fff}.footer-note{margin-top:42px;padding-top:22px;border-top:1px solid rgba(255,255,255,.11);display:flex;justify-content:space-between;gap:30px;color:#9eb7d2;font-size:.8rem}.footer-note p:first-child{max-width:780px}.mobile-bottom-nav{display:none}.overlay{position:fixed;inset:var(--nav) 0 0;background:rgba(12,30,52,.34);z-index:130;visibility:hidden;opacity:0;pointer-events:none;transition:.2s}.overlay.is-open{visibility:visible;opacity:1;pointer-events:auto}.mega-menu,.search-panel{position:fixed;left:0;right:0;top:var(--nav);z-index:150;background:#fff;border-bottom:1px solid var(--gline);box-shadow:0 24px 70px rgba(20,50,80,.16);visibility:hidden;opacity:0;pointer-events:none;transform:translateY(-10px);transition:.2s}.mega-menu.is-open,.search-panel.is-open{visibility:visible;opacity:1;pointer-events:auto;transform:none}.panel-head{min-height:62px;display:flex;align-items:center;justify-content:space-between}.panel-head strong{font-size:1.05rem;color:var(--title)}.panel-close{width:44px;height:44px;border:0;background:var(--gray);border-radius:50%;cursor:pointer;font-size:1.5rem}.mega-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding-bottom:32px;max-height:calc(100vh - 150px);overflow:auto}.menu-group h2{font-size:.83rem;color:var(--blue);text-transform:uppercase}.menu-group a{display:block;padding:10px 0;border-bottom:1px solid var(--gline)}.menu-group a strong,.menu-group a span{display:block}.menu-group a strong{font-size:.92rem;color:var(--title)}.menu-group a span{font-size:.76rem;color:var(--muted);line-height:1.5;margin-top:2px}.menu-group a:hover strong{color:var(--blue)}.search-inner{padding-bottom:34px;max-height:calc(100vh - 90px);overflow:auto}.search-box{height:58px;border:2px solid #cfe3fb;border-radius:17px;background:var(--sub);display:flex;align-items:center;gap:12px;padding:0 18px}.search-box span{font-size:1.5rem;color:var(--blue)}.search-box input{border:0;outline:0;background:transparent;width:100%;font-size:1.02rem;color:var(--title)}.search-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin:24px 0}.search-grid h2{font-size:.82rem}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.chip-row button{border:1px solid var(--line);background:var(--soft);color:var(--blue);border-radius:999px;padding:7px 11px;cursor:pointer}.search-links{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.search-links a{padding:15px;border:1px solid var(--gline);border-radius:13px;font-weight:750}.search-links a span{display:block;margin-top:4px;font-size:.75rem;font-weight:400;color:var(--muted)}.search-empty{color:var(--muted);padding:20px 0}.search-links a[hidden]{display:none!important}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.article-grid.two{grid-template-columns:repeat(2,1fr)}.article-grid.four{grid-template-columns:repeat(4,1fr)}.article-grid article p{color:var(--muted)}.split-feature{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:stretch}.feature-panel{padding:34px;border-radius:22px;background:var(--soft)}.feature-panel:nth-child(2){background:#fff;border:1px solid var(--gline)}.index-list{display:grid;gap:0;border-top:1px solid var(--gline)}.index-row{display:grid;grid-template-columns:160px 1fr auto;gap:20px;align-items:start;padding:24px 0;border-bottom:1px solid var(--gline)}.index-row strong{color:var(--title)}.index-row p{margin:0;color:var(--muted)}.mini-label{font-size:.75rem;color:var(--blue);font-weight:800}.long-copy{max-width:850px}.long-copy p{font-size:1.02rem;color:#48566a}.callout{padding:22px 24px;border-radius:16px;background:var(--soft);border:1px solid var(--line)}.callout strong{color:var(--title)}.visual-placeholder{min-height:280px;border-radius:22px;background:linear-gradient(145deg,#dcecff,#f7fbff);display:grid;place-items:center;color:var(--blue);font-weight:900;position:relative;overflow:hidden}.visual-placeholder:before,.visual-placeholder:after{content:"";position:absolute;border-radius:50%;background:rgba(20,120,242,.08)}.visual-placeholder:before{width:220px;height:220px;right:-50px;top:-60px}.visual-placeholder:after{width:110px;height:110px;left:30px;bottom:25px}.visual-placeholder span{position:relative;z-index:1}
:focus-visible{outline:3px solid rgba(20,120,242,.35);outline-offset:3px;border-radius:8px}
@media(max-width:1080px){.desktop-nav{gap:10px}.brand-tag{display:none}.main-nav a{padding-inline:7px;font-size:.84rem}.icon-button span:last-child{display:none}.overview-grid{grid-template-columns:repeat(2,1fr)}.editor-grid{grid-template-columns:1fr 1.25fr}.editor-side{grid-column:span 2;grid-template-columns:repeat(4,1fr)}.article-grid.four,.help-categories{grid-template-columns:repeat(2,1fr)}.footer-brand-row{grid-template-columns:1fr}.footer-brand{max-width:680px}.search-links{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){:root{--nav:62px}.shell{width:min(calc(100% - 30px),var(--max))}.desktop-nav{display:none}.mobile-nav{height:var(--nav);display:grid;grid-template-columns:52px 1fr 52px;align-items:center;padding:0 10px}.mobile-square{font-size:1.2rem}.mobile-brand{justify-self:center;max-width:150px;min-width:0}.mobile-brand img{max-height:36px;max-width:132px;width:auto}.mobile-brand strong{color:var(--blue);font-size:1.18rem;white-space:nowrap}.mobile-discover{min-height:44px;display:grid;place-items:center;color:var(--blue);font-weight:800}.site-main{padding-bottom:72px}.section{padding:54px 0}.page-hero{padding:50px 0 32px}.section-head{display:block}.editor-grid{display:flex;flex-direction:column}.editor-intro{order:1}.brand-banner{order:2;min-height:360px}.editor-side{order:3;display:grid;grid-template-columns:repeat(2,1fr)}.overview-grid,.discussion-grid,.map-board,.story-layout,.risk-grid,.privacy-grid,.split-feature{grid-template-columns:1fr}.discussion-main{grid-row:auto}.map-board article:nth-child(1){grid-row:auto}.map-board article:nth-child(4){grid-column:auto}.magazine-grid article,.magazine-grid article:nth-child(1),.magazine-grid article:nth-child(2),.magazine-grid article:nth-child(5),.magazine-grid article:nth-child(6){grid-column:span 6}.route-step{grid-template-columns:55px 1fr}.route-step aside{grid-column:2}.qa-item{grid-template-columns:38px 1fr}.qa-item p,.qa-item>a{grid-column:2}.waterfall{columns:2 240px}.topic-index,.guide-list,.article-grid,.article-grid.two,.article-grid.four,.principles,.contact-grid{grid-template-columns:1fr 1fr}.process-line{grid-template-columns:repeat(2,1fr)}.notice-row{grid-template-columns:1fr}.app-hero{grid-template-columns:1fr;padding:48px 0}.app-visual{min-height:430px;order:2}.rule-directory{grid-template-columns:1fr}.rule-nav{position:static;display:flex;flex-wrap:wrap}.footer-links{grid-template-columns:repeat(2,1fr)}.footer-note{display:block}.mobile-bottom-nav{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;z-index:110;left:0;right:0;bottom:0;padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.97);border-top:1px solid var(--gline);box-shadow:0 -8px 24px rgba(30,60,90,.08)}.mobile-bottom-nav a{min-height:58px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;font-size:.68rem;color:var(--muted)}.mobile-bottom-nav a span{font-size:1rem;line-height:1}.mobile-bottom-nav a.is-current{color:var(--blue);font-weight:800}.overlay{inset:var(--nav) 0 0}.mega-menu{left:auto;right:0;top:0;bottom:0;width:min(88vw,400px);transform:translateX(100%);border-bottom:0}.mega-menu.is-open{transform:none}.mega-menu .panel-head{padding:0 16px}.mega-inner{display:block;width:auto;margin:0;padding:0 18px 90px;max-height:calc(100vh - 62px)}.menu-group{margin-bottom:24px}.search-panel{top:0;bottom:0}.search-inner{width:auto;margin:0;padding:0 15px 90px;max-height:100vh}.search-grid{grid-template-columns:1fr;gap:12px}.search-links{grid-template-columns:1fr}.brand-manifesto{padding:36px 26px}.brand-manifesto:after{font-size:4rem}.index-row{grid-template-columns:1fr}.footer-brand-row{gap:34px}.site-footer{padding-bottom:100px}}
@media(max-width:560px){.shell{width:calc(100% - 30px)}h1{font-size:2.08rem}.page-hero p{font-size:.98rem}.card{padding:20px}.editor-intro{padding:23px}.editor-side{grid-template-columns:1fr}.brand-banner{min-height:300px;padding:24px}.banner-copy strong{font-size:1.55rem}.overview-grid,.topic-index,.guide-list,.article-grid,.article-grid.two,.article-grid.four,.principles,.contact-grid,.help-categories{grid-template-columns:1fr}.magazine-grid article,.magazine-grid article:nth-child(1),.magazine-grid article:nth-child(2),.magazine-grid article:nth-child(5),.magazine-grid article:nth-child(6){grid-column:span 12}.route-step{grid-template-columns:1fr;gap:8px}.route-step aside{grid-column:1}.qa-item{grid-template-columns:1fr;gap:10px}.qa-item p,.qa-item>a{grid-column:1}.waterfall{columns:1}.process-line{grid-template-columns:1fr}.app-services{grid-template-columns:1fr}.app-visual{min-height:390px}.footer-links{grid-template-columns:1fr 1fr;gap:22px 16px}.footer-links a{font-size:.84rem}.brand-manifesto{padding:30px 22px}.channel-scroll{gap:20px}.primary-link{width:100%}.hero-actions{align-items:stretch;flex-direction:column}.hero-actions .text-link{text-align:center}.search-box{height:54px}}
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