@charset "UTF-8";
:root{--ink:#152234;--muted:#677489;--blue:#1559e8;--line:#e1e7ee;--paper:#fff;--soft:#f3f6fa;--wrap:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;color:var(--ink);background:var(--paper);font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.7}a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #ffb746;outline-offset:5px}button,input{font:inherit}img{max-width:100%;height:auto;display:block}.wrap{max-width:var(--wrap);margin:auto;padding:0 24px}header{background:#fff;border-bottom:1px solid var(--line)}.mast{height:98px;display:flex;align-items:center;gap:34px}.brand{display:flex;align-items:center;gap:12px;font-size:30px;font-weight:850;letter-spacing:1.5px;line-height:1.1}.brand small{font-size:12px;display:block;letter-spacing:2px;font-weight:500;margin-top:9px;color:var(--muted)}.brand-mark{width:48px;height:48px;background:var(--blue);color:#fff;border-radius:9px;font-size:34px;position:relative;text-align:center;line-height:48px}.brand-mark span{position:absolute;right:1px;top:-9px;font-size:20px}.mast-note{font-size:14px;color:var(--muted);margin-left:auto}.search-link{display:flex;gap:9px;align-items:center;font-size:14px;border-left:1px solid var(--line);padding-left:25px}.nav{display:flex;gap:33px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.nav a{padding:16px 0 14px;font-weight:650;font-size:15px;position:relative}.nav a[aria-current]{color:var(--blue)}.nav a[aria-current]:after{content:"";position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--blue)}.edition{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;padding:18px 0;letter-spacing:.8px}.edition i{display:inline-block;width:6px;height:6px;background:var(--blue);border-radius:50%;margin-right:7px}.ad-banner{background:linear-gradient(115deg,#082254,#133c88 70%,#1a53ac);color:white;display:grid;grid-template-columns:1fr 1fr;min-height:330px;position:relative;overflow:hidden;border-radius:5px}.ad-copy{padding:26px 0 29px 38px;z-index:1}.ad-label{font-size:12px;color:#c7d8f5;letter-spacing:1px}.ad-brand{display:flex;align-items:center;gap:9px;margin-top:10px;font-size:22px;font-weight:700}.ad-brand b{font-size:14px;border-left:1px solid #8da2c5;padding-left:10px;margin-left:6px;font-weight:500}.ad-copy h2{font-size:31px;line-height:1.4;letter-spacing:.5px;margin:14px 0 9px}.ad-copy p{font-size:14px;color:#d1dff6;margin:0 0 20px}.button{display:inline-flex;align-items:center;gap:30px;color:#143660;background:#fff;border-radius:3px;padding:10px 18px;font-size:14px;font-weight:700}.button:hover{background:#e8f1ff}.ad-visual{position:relative;display:flex;align-items:center;justify-content:center;padding:43px 45px 40px 5px}.ad-orbit{position:absolute;width:430px;height:430px;border:1px solid #ffffff1a;border-radius:50%;top:-30px;left:0}.ad-orbit:before{content:"";position:absolute;inset:35px;border:1px solid #ffffff1a;border-radius:50%}.product-shot{width:420px;max-height:235px;object-fit:contain;filter:drop-shadow(0 20px 20px #0005);transform:perspective(1000px) rotateY(-8deg);z-index:1}.arm-label{position:absolute;top:21px;right:30px;font-size:12px;letter-spacing:2px;color:#d9e6ff}.shot-caption{position:absolute;bottom:17px;font-size:11px;color:#c6d7f0}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;margin:42px 0 22px;gap:20px}.eyebrow{color:var(--blue);font-size:11px;font-weight:750;letter-spacing:1.8px}.section-heading h2{font-size:25px;letter-spacing:-.5px;margin:4px 0 0;line-height:1.4}.section-heading>a{font-size:14px;color:var(--muted);white-space:nowrap}.section-heading>a span{color:var(--blue);margin-left:7px}.focus-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:32px}.lead-story{border:1px solid var(--line)}.article-art{position:relative;overflow:hidden;min-height:180px;background:#e5edfa;color:#173e78;display:flex;align-items:center;justify-content:center}.art-kicker{position:absolute;top:17px;left:20px;font-size:10px;letter-spacing:2px;font-weight:650}.art-caption{position:absolute;bottom:16px;left:20px;font-size:11px;letter-spacing:2px}.art-plus{position:absolute;right:17px;bottom:13px;font-size:27px;font-weight:300}.article-art:before{content:"";position:absolute;width:220px;height:220px;border:1px solid currentColor;opacity:.09;border-radius:50%;right:-20px;top:-45px}.article-art:after{content:"";position:absolute;width:220px;height:220px;border:1px solid currentColor;opacity:.1;left:-60px;bottom:-100px;transform:rotate(35deg)}.art-chip{position:relative;border:1px solid #fff8;background:#ffffff55;box-shadow:14px 14px 0 #ffffff28,28px 28px 0 #ffffff20;min-width:130px;padding:23px 15px;text-align:center;transform:rotate(-8deg);z-index:1}.art-chip span{font-size:25px;font-weight:800;letter-spacing:1px}.art-chip i{display:block;margin:8px auto 0;width:28px;height:3px;background:currentColor;opacity:.45}.art-linux{background:#eee8d7;color:#6c5930}.art-apps{background:#e4ece8;color:#28594b}.art-guides{background:#e5e9f0;color:#384861}.art-industry{background:#ede9f6;color:#574382}.art-windows{background:#deecf8;color:#275a92}.hero-art{min-height:270px;background:linear-gradient(125deg,#deeaff,#f2f6fd)}.hero-art .art-chip{padding:29px 65px;transform:perspective(550px) rotateY(-18deg) rotateZ(-10deg);box-shadow:16px 18px 0 #bacbed66,32px 36px 0 #d2dff166}.hero-art .art-chip span{font-size:46px}.lead-text{padding:24px 26px}.meta{display:flex;gap:12px;align-items:center;font-size:12px;line-height:1.6}.category-tag{color:var(--blue);font-size:12px;font-weight:700}.muted{color:var(--muted)}h1,h2,h3{line-height:1.5}.lead-text h2{font-size:27px;margin:11px 0}.lead-text p{font-size:15px;color:var(--muted);margin:0 0 17px}.text-link{font-size:14px;font-weight:650;color:var(--blue)}.focus-side{display:flex;flex-direction:column;justify-content:space-between}.focus-side article{display:flex;gap:16px;padding:21px 0;border-bottom:1px solid var(--line)}.focus-side article:first-child{padding-top:0}.number{font-size:33px;line-height:1.2;color:#b9c9e3;font-weight:300}.focus-side h3{font-size:20px;margin:9px 0}.focus-side p{font-size:14px;color:var(--muted);margin:0}.news-layout{display:grid;grid-template-columns:minmax(0,2.1fr) minmax(0,1fr);gap:38px}.news-list{border-top:1px solid var(--line)}.news-row{display:grid;grid-template-columns:minmax(0,1fr) 170px;gap:25px;padding:26px 0;border-bottom:1px solid var(--line);align-items:center}.news-row h3{font-size:21px;margin:8px 0}.news-row p{font-size:14px;color:var(--muted);margin:0 0 10px}.news-row time{font-size:12px;color:var(--muted)}.row-art .article-art{height:125px;min-height:125px}.row-art .art-kicker,.row-art .art-caption,.row-art .art-plus{display:none}.row-art .art-chip{min-width:85px;padding:18px 9px}.row-art .art-chip span{font-size:15px}.side-panel{background:var(--soft);padding:30px;align-self:start;border-top:3px solid var(--blue)}.side-panel h2{font-size:22px;margin:10px 0}.side-panel>p{font-size:14px;color:var(--muted)}.side-panel ol{list-style:none;padding:0;counter-reset:steps;margin:24px 0 35px}.side-panel li{counter-increment:steps;border-bottom:1px solid #dbe1ea;padding:15px 0;display:flex;gap:12px}.side-panel li:before{content:counter(steps,decimal-leading-zero);font-size:12px;color:var(--blue);padding-top:3px}.side-panel li a{font-size:15px;font-weight:600}.side-panel li a span{margin-left:7px;color:var(--blue)}.source-note{background:#fff;padding:22px}.small-label{color:var(--muted);font-size:12px}.source-note h3{font-size:18px}.source-note p,.source-note a{font-size:14px}.source-note p{color:var(--muted)}.source-note a{color:var(--blue)}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.card{border:1px solid var(--line);background:#fff;transition:transform .15s}.card:hover{transform:translateY(-3px)}.card-body{padding:21px}.card h3{font-size:20px;margin:10px 0}.card p{font-size:14px;color:var(--muted);margin:0 0 22px}.card-bottom{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);gap:10px}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);background:#f7f9fc}.guide-grid article{padding:26px;border-right:1px solid var(--line)}.guide-grid article:last-child{border:0}.guide-num{font-size:39px;font-weight:300;color:#9eafd0;line-height:1;display:block;margin-bottom:25px}.guide-grid h3{font-size:21px}.guide-grid p{font-size:14px;color:var(--muted)}.topics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:64px}.topics>a{background:var(--soft);padding:22px;position:relative;border-top:2px solid #dbe5f7}.topics span{font-size:18px;font-weight:700}.topics p{font-size:13px;color:var(--muted);margin:12px 0 24px}.topics b{color:var(--blue)}footer{border-top:1px solid var(--line);background:#f7f9fc;padding:40px 0 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}.foot-logo{font-size:27px;font-weight:800;letter-spacing:2px}.foot-logo span{color:var(--blue)}.footer-grid p{font-size:13px;color:var(--muted)}.footer-grid>div:not(:first-child){display:flex;flex-direction:column;gap:9px;font-size:13px;padding-top:8px}.footer-grid>div>span{font-weight:650}.footer-bottom{display:flex;justify-content:space-between;padding-top:22px;padding-bottom:22px;margin-top:28px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.page-head{padding:48px 0 35px;border-bottom:1px solid var(--line);margin-bottom:30px}.page-head h1{font-size:40px;margin:10px 0}.page-head p{color:var(--muted);margin:0}.category-grid{margin-bottom:40px}.inline-promo{background:#eef3fd;display:flex;gap:20px;align-items:center;padding:24px;margin-bottom:60px;flex-wrap:wrap}.inline-promo>a{color:var(--blue);font-weight:600}.inline-promo small{margin-left:auto;color:var(--muted)}.breadcrumb{padding:27px 0;display:flex;gap:12px;font-size:13px;color:var(--muted)}.article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(0,1fr);gap:55px}.article>h1{font-size:35px;line-height:1.5;margin:13px 0}.article-summary{font-size:18px;color:var(--muted);margin:0 0 22px}.byline{display:flex;gap:12px;align-items:center;font-size:12px;color:var(--muted);padding-bottom:25px;flex-wrap:wrap}.avatar{background:var(--blue);color:white;border-radius:50%;width:28px;height:28px;text-align:center;line-height:28px;font-weight:700}.detail-art{height:260px;margin-bottom:35px}.detail-art .art-chip span{font-size:36px}.article-content{font-size:17px;line-height:1.95}.article-content h2{font-size:24px;margin:34px 0 14px}.article-content p{margin:0 0 18px}.article-content a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}.references{background:var(--soft);padding:1px 26px 22px;margin-top:38px}.references h2{font-size:19px}.references p,.references li{font-size:14px}.references ul{padding-left:20px}.article-end{display:flex;justify-content:space-between;margin:28px 0;font-size:14px;border-bottom:1px solid var(--line);padding-bottom:25px}.article-aside{padding-top:18px}.toc{border-top:3px solid var(--ink);padding-top:20px}.toc h2{font-size:18px}.toc>a{display:block;font-size:14px;padding:12px 0;border-bottom:1px solid var(--line)}.mini-ad{margin-top:35px;padding:26px;background:#102d63;color:white}.mini-ad small{font-size:11px;color:#b6c9e8}.mini-ad h3{font-size:21px;margin:13px 0}.mini-ad p{font-size:14px;color:#c9d7ed}.mini-ad a{font-size:14px;color:#fff;text-decoration:underline}.article-layout+section{margin-bottom:60px}.search-page{padding-bottom:65px}.search-form{display:flex;border:1px solid #a9bbd6;background:#fff;margin:25px 0}.search-form input{width:100%;min-width:0;border:0;padding:17px 20px;background:transparent;outline-offset:0}.search-form button{flex-shrink:0;border:0;background:var(--blue);color:#fff;padding:12px 28px;cursor:pointer}.search-result{padding:24px;border:1px solid var(--line)}.search-result h2{font-size:21px}.search-result p{font-size:14px;color:var(--muted)}#search-status{font-size:14px;color:var(--muted);margin:24px 0}.empty-state{grid-column:1/-1;background:var(--soft);padding:35px}.info-page{max-width:850px;padding-bottom:60px}.not-found{padding-top:80px;padding-bottom:100px}.not-found h1{font-size:38px}.not-found .text-link{margin-left:25px}.dark{background:var(--blue);color:white}.sr-only,.skip:not(:focus){position:absolute;clip:rect(0,0,0,0);width:1px;height:1px;overflow:hidden}.skip:focus{position:fixed;top:0;left:10px;background:#fff;z-index:100;padding:10px}@media(max-width:960px){.nav{gap:25px}.mast-note{display:none}.search-link{margin-left:auto}.ad-copy{padding-left:25px}.ad-copy h2{font-size:26px}.ad-visual{padding-right:20px}.shot-caption{font-size:10px;right:15px}.focus-grid{grid-template-columns:1.2fr 1fr;gap:25px}.focus-side h3{font-size:18px}.news-layout{grid-template-columns:1fr}.side-panel{display:none}.article-layout{grid-template-columns:1fr;gap:0}.article-aside{display:none}.card-grid{gap:15px}.card-body{padding:17px}.card h3{font-size:18px}.topics{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.wrap{padding-left:19px;padding-right:19px}.mast{height:80px}.brand{font-size:26px}.brand-mark{width:41px;height:41px;line-height:41px;font-size:30px}.brand small{font-size:10px}.nav{gap:24px}.nav a{font-size:14px;padding-top:12px}.search-link{padding-left:14px}.search-link span{display:none}.edition{font-size:10px;padding:14px 0}.edition>span:last-child{display:none}.ad-banner{grid-template-columns:1fr;min-height:0}.ad-copy{padding:22px 23px 25px}.ad-brand{font-size:21px;margin-top:6px}.ad-copy h2{font-size:27px;margin:12px 0}.ad-copy p{font-size:12px}.ad-visual{display:none}.ad-label{font-size:11px}.button{padding:10px 16px;font-size:13px}.section-heading{margin-top:32px;gap:10px}.section-heading h2{font-size:22px}.section-heading>a{font-size:12px}.eyebrow{font-size:10px}.focus-grid{grid-template-columns:1fr;gap:24px}.hero-art{min-height:220px}.lead-text{padding:21px}.lead-text h2{font-size:25px}.lead-text p{font-size:14px}.focus-side article{padding:18px 0}.focus-side h3{font-size:19px}.focus-side p{font-size:14px}.news-row{grid-template-columns:minmax(0,1fr) 90px;gap:16px;padding:21px 0}.news-row h3{font-size:18px}.news-row p{display:none}.row-art .article-art{height:90px;min-height:90px}.row-art .art-chip{min-width:60px;padding:13px 7px;box-shadow:6px 6px 0 #fff4}.row-art .art-chip span{font-size:10px;letter-spacing:0}.news-row time{font-size:11px}.meta{font-size:11px;gap:9px}.category-tag{font-size:11px}.card-grid{grid-template-columns:1fr;gap:22px}.card .article-art{min-height:175px}.card h3{font-size:21px}.card-body{padding:21px}.card-bottom{font-size:12px}.guide-grid{grid-template-columns:1fr}.guide-grid article{border-right:0;border-bottom:1px solid var(--line);padding:24px}.guide-num{float:right;margin:0;font-size:32px}.guide-grid h3{font-size:21px;margin:11px 0}.topics{gap:12px;margin-bottom:40px}.topics>a{padding:18px}.topics span{font-size:17px}.topics p{font-size:12px}.footer-grid{grid-template-columns:1fr 1fr;gap:18px}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{font-size:10px;gap:15px;align-items:center}.page-head{padding:33px 0 25px}.page-head h1{font-size:31px}.page-head p{font-size:15px}.article>h1{font-size:28px}.article-summary{font-size:16px}.detail-art{height:190px;min-height:190px}.detail-art .art-chip span{font-size:29px}.article-content{font-size:17px;line-height:1.95}.article-content h2{font-size:22px}.references{padding:1px 19px 18px}.search-form input{padding:14px 12px;font-size:14px}.search-form button{padding:10px 16px;font-size:14px}.inline-promo{padding:20px;font-size:14px;gap:8px}.inline-promo small{margin-left:0}.not-found h1{font-size:28px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.card{transition:none}}

.brand-intro{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:44px;align-items:center;padding:8px 0 30px}.brand-intro h1{font-size:32px;line-height:1.45;letter-spacing:-.6px;margin:7px 0 12px}.brand-intro p{max-width:760px;font-size:15px;line-height:1.9;color:var(--muted);margin:0}.brand-intro-links{display:flex;gap:26px;flex-wrap:wrap;margin-top:16px;font-size:14px;font-weight:650;color:var(--blue)}.brand-intro-links span{margin-left:7px}.brand-intro-mark{border-left:1px solid var(--line);padding:16px 0 16px 32px;display:flex;flex-direction:column}.brand-intro-mark strong{font-size:37px;letter-spacing:2px;color:var(--blue)}.brand-intro-mark>span{font-size:12px;letter-spacing:2px;color:var(--muted);margin-top:6px}@media(max-width:760px){.brand-intro{grid-template-columns:1fr;gap:0;padding-bottom:25px}.brand-intro h1{font-size:25px}.brand-intro p{font-size:14px}.brand-intro-mark{display:none}.brand-intro-links{gap:20px;font-size:13px}}