*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F7F8FC;color:#38445A;font:16px/1.78 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:anywhere}img,svg{max-width:100%}img{height:auto;object-fit:contain;object-position:center}a{color:inherit;text-underline-offset:4px}a:hover{color:#7566AB}button,input{font:inherit}button{cursor:pointer}button,a,input{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #7566AB;outline-offset:3px}.shell{max-width:1160px;margin-inline:auto;padding-inline:28px}.skip{position:absolute;top:-100px;left:10px;z-index:300;background:white;padding:8px}.skip:focus{top:5px}.site-head{background:#fff;border-bottom:1px solid #E2E8F1}.head-inner{min-height:70px;display:flex;align-items:center;gap:26px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#202B43;flex-shrink:0}.brand img{max-height:30px;width:auto}.wordmark{font-size:23px;font-weight:800;letter-spacing:.04em}.brand small{font-size:10px;letter-spacing:.12em;font-weight:650}.primary{display:flex;gap:25px;margin-left:auto}.primary a,.desktop-service,.thin-nav a{text-decoration:none;white-space:nowrap;font-size:14px;font-weight:600}.head-tools{display:flex;align-items:center;gap:12px}.icon-btn{width:44px;height:44px;display:grid;place-items:center;border:0;border-radius:11px;background:transparent;color:#202B43}.icon-btn svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-linecap:round;stroke-width:1.9}.js-menu{display:none}.no-js-menu{display:none}.thin-nav{background:#EEF3FA;border-bottom:1px solid #E2E8F1}.thin-inner{min-height:40px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:#637189}.thin-inner>div{display:flex;align-items:center;gap:23px}.thin-nav a:hover,.primary a:hover{border-bottom:2px solid #7566AB}.site-footer{margin-top:65px;padding:38px 0 24px;background:#202B43;color:#fff}.footer-brand{margin-bottom:28px}.footer-logo{font-weight:800;text-decoration:none;margin-right:15px}.footer-logo img{max-height:26px;width:auto;filter:brightness(0) invert(1)}.footer-brand p{max-width:650px;margin:8px 0;color:#E2E8F1;font-size:14px}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:25px}.footer-grid>div{display:flex;flex-direction:column;gap:6px}.footer-grid h2{font-size:16px;margin:0 0 8px;color:#fff}.footer-grid a{font-size:14px;color:#E2E8F1;text-decoration:none;width:fit-content}.footer-grid a:hover{color:#fff;text-decoration:underline}.mobile-end{display:none}.page-section{margin-block:50px}.eyebrow{font-size:13px;font-weight:800;color:#7566AB;letter-spacing:.1em}.hero{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:34px;align-items:center;padding:36px 0 8px}.hero h1,.article-title h1{font-size:34px;line-height:1.3;color:#202B43;margin:10px 0 16px}.lead{max-width:680px;font-size:17px;line-height:1.75}.hero .lead{max-width:540px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.action{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:#202B43;color:#fff;text-decoration:none;font-weight:700;padding:9px 17px;font-size:14px}.action.secondary{color:#202B43;background:#EEF3FA;border:1px solid #D9E7F6}.action:hover{background:#7566AB;color:#fff}.media{background:#EEF3FA;border:1px solid #E2E8F1;border-radius:13px;padding:12px;min-width:0;display:flex;align-items:center;justify-content:center}.media img{max-width:100%;max-height:180px;width:auto;height:auto;display:block}.media.hero-media img{max-height:260px}.media.app-media img{max-height:340px;max-width:210px}.image-fallback{width:100%;min-height:105px;display:grid;place-items:center;text-align:center;padding:20px;color:#637189;font-size:15px;font-weight:700}.media.hero-media .image-fallback{min-height:205px}.media.app-media .image-fallback{min-height:200px;max-width:210px}.section-heading{margin:0 0 20px;color:#202B43;font-size:25px;line-height:1.38}.section-heading+p{margin-top:0}.editor-strip,.feature-panel,.article-card{background:#fff;border:1px solid #E2E8F1;border-radius:13px;padding:22px}.editor-strip{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.7fr);gap:24px;align-items:center}.editor-strip .media img{max-height:170px}.editor-strip p,.article-card p{max-width:72ch}.text-link{font-weight:700;color:#64549b;text-decoration-thickness:1px}.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.card{background:#fff;border:1px solid #E2E8F1;border-radius:12px;padding:16px;min-width:0;display:flex;flex-direction:column}.card .media{margin-bottom:12px}.card .media img{max-height:140px}.card h3{font-size:19px;color:#202B43;margin:0 0 8px}.card p{font-size:15px;line-height:1.72;margin:0 0 15px}.card .text-link{margin-top:auto}.two-col{display:grid;grid-template-columns:1.1fr 1fr;gap:18px}.two-col .media{max-width:300px;margin-bottom:12px}.feature-panel p{max-width:67ch}.topic-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}.topic-list li{padding:14px 0;border-bottom:1px solid #E2E8F1}.topic-list strong{display:block;color:#202B43}.topic-list p{margin:5px 0}.soft{background:#EEF3FA;border-radius:13px;padding:24px;border:1px solid #D9E7F6}.soft p{max-width:78ch}.editor-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:22px;align-items:center}.mini-rows{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.mini-rows>div{padding:15px;background:white;border-left:3px solid #7566AB;border-radius:8px}.mini-rows strong{color:#202B43}.mini-rows p{margin:5px 0;font-size:15px}.closing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.closing-grid article{border-top:2px solid #D9E7F6;padding:15px 0}.closing-grid h3{color:#202B43;margin:0 0 8px}.closing-grid p{margin:0 0 10px;font-size:15px}.faq-teasers{background:white;border:1px solid #E2E8F1;border-radius:12px;padding:22px}.faq-teasers a{display:block;padding:8px 0}.article-title{padding-top:34px}.article-title .lead{margin-bottom:0}.article-visual{margin-top:24px;max-width:630px}.article-visual .media img{max-height:240px}.article-body{max-width:790px}.article-body h2{font-size:25px;line-height:1.4;color:#202B43;margin:35px 0 10px}.article-body p{margin:10px 0 16px}.article-body .hint{background:#EEF3FA;border-left:3px solid #7566AB;border-radius:8px;padding:15px 18px;margin-top:18px}.article-body .hint strong{color:#202B43}.article-type-b .article-visual{margin-inline:auto}.article-type-b .article-body{max-width:920px}.article-type-b .article-body .section-blocks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.article-type-b .article-body section{min-width:0}.article-type-b .article-body section h2{margin-top:24px}.article-type-c .article-layout{display:grid;grid-template-columns:minmax(0,220px) minmax(0,1fr);gap:32px;align-items:start;margin-top:30px}.toc{background:#EEF3FA;border:1px solid #D9E7F6;border-radius:12px;padding:18px;position:sticky;top:16px}.toc strong{display:block;margin-bottom:9px;color:#202B43}.toc a{display:block;padding:6px 0;font-size:14px}.article-type-c .article-body h2:first-child{margin-top:0}.related{border-top:1px solid #E2E8F1;margin-top:35px;padding-top:20px}.related a{display:inline-block;margin:5px 15px 5px 0;color:#64549b}.faq-list{max-width:880px;margin:25px 0}.faq-list article{padding:19px 0;border-bottom:1px solid #E2E8F1}.faq-list h2{margin:0 0 8px;font-size:21px;color:#202B43}.faq-list p{margin:0;max-width:78ch}.overlay[hidden]{display:none!important}.overlay{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:15px}.overlay-shade{position:absolute;inset:0;background:#101a30ad}.overlay-panel{position:relative;width:min(100%,860px);max-height:calc(100dvh - 30px);overflow-y:auto;background:#fff;color:#38445A;border-radius:13px;padding:24px;box-shadow:0 20px 80px #101a3066}.menu-panel{width:min(100%,920px)}.overlay-top{display:flex;justify-content:space-between;align-items:center;gap:12px;border-bottom:1px solid #E2E8F1;margin-bottom:20px;padding-bottom:10px;color:#202B43}.close-btn{width:44px;height:44px;border:1px solid #E2E8F1;border-radius:10px;background:#EEF3FA;font-size:26px;line-height:1}.menu-groups{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.menu-groups h2{font-size:16px;margin:0 0 8px;color:#7566AB}.menu-groups a{display:inline-block;min-height:40px;min-width:46%;padding:6px 9px;text-decoration:none;font-size:15px}.search-panel{max-width:580px}.search-panel label{display:block;font-weight:700;margin-bottom:8px}.search-panel input{display:block;width:100%;min-height:46px;padding:10px 13px;border:1px solid #637189;border-radius:9px}.search-hint,.search-count{font-size:14px;color:#637189}.search-results nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.search-results a{background:#EEF3FA;border-radius:8px;text-decoration:none;padding:7px 10px;font-size:14px;min-height:42px}.modal-open{overflow:hidden}@media(max-width:1024px){.primary{gap:13px}.primary a{font-size:13px}.desktop-service{display:none}.js-menu{display:grid}.head-inner{gap:14px}.brand small{display:none}}@media(max-width:768px){.shell{padding-inline:22px}.head-inner{min-height:60px}.primary,.thin-nav{display:none}.head-tools{margin-left:auto}.hero,.editor-strip,.editor-grid,.two-col{grid-template-columns:1fr}.hero{gap:16px}.hero-media{order:2}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.closing-grid{grid-template-columns:1fr 1fr}.article-type-b .article-body .section-blocks{grid-template-columns:1fr}.article-type-c .article-layout{grid-template-columns:1fr;gap:10px}.toc{position:static;display:flex;flex-wrap:wrap;gap:0 12px}.toc strong{width:100%}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.page-section{margin-block:37px}.section-heading,.article-body h2{font-size:22px}.hero h1,.article-title h1{font-size:29px}.article-visual .media img{max-height:220px}.mini-rows{grid-template-columns:1fr}.media.hero-media img{max-height:220px}.image-fallback{min-height:90px}}@media(max-width:480px){.shell{padding-inline:16px}.brand .wordmark{font-size:21px}.head-tools{gap:1px}.no-js-menu{display:none}.js-menu{display:grid}.hero{padding-top:22px}.hero h1,.article-title h1{font-size:27px}.lead{font-size:16px}.cards,.closing-grid{grid-template-columns:1fr}.editor-strip,.feature-panel,.article-card,.soft{padding:17px}.card{padding:17px}.media{padding:9px}.media img{max-height:150px}.card .media img{max-height:140px}.menu-groups{grid-template-columns:1fr;gap:14px}.menu-groups a{min-width:48%;font-size:14px}.overlay{padding:0;place-items:stretch}.overlay-panel{max-height:100dvh;border-radius:0;padding:16px;width:100%;height:100dvh}.footer-grid{gap:20px}.mobile-end{display:flex;gap:15px;flex-wrap:wrap;padding-top:25px;margin-top:24px;border-top:1px solid #637189}.mobile-end a{color:white}.site-footer{margin-top:40px}.media.app-media img{max-height:300px;max-width:190px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}/* 原生目录入口在未启用交互时仍可使用 */
.no-js-menu{display:inline-flex;align-items:center;min-height:44px;font-size:13px;text-decoration:none;white-space:nowrap}.js .no-js-menu{display:none}.js-menu{display:none!important}.js .js-menu{display:grid!important}@media(min-width:1025px){.js .js-menu{display:none!important}}@media(max-width:480px){.no-js-menu{display:inline-flex}.js .no-js-menu{display:none}}