*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:#F6F8F8;color:#374D58;font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:break-word}a{color:#226D9D;text-underline-offset:3px}a:hover{color:#168E96}a:focus-visible,summary:focus-visible,button:focus-visible{outline:3px solid #168E96;outline-offset:3px}h1,h2,h3{color:#193946;line-height:1.4;margin:0 0 18px}h1{font-size:clamp(28px,3.2vw,40px)}h2{font-size:clamp(22px,2.1vw,28px)}h3{font-size:19px}p{margin:0 0 19px}ul,ol{padding-left:1.45em}li+li{margin-top:8px}img{max-width:100%}.wrap{width:min(1220px,calc(100% - 56px));margin-inline:auto}.skip-link{position:absolute;left:10px;top:-100px;background:white;z-index:50;padding:8px}.skip-link:focus{top:10px}.site-header{background:#122E3B;color:white;position:relative;z-index:20}.header-inner{width:min(1220px,calc(100% - 56px));margin:auto;display:flex;align-items:center;gap:22px;min-height:76px}.brand{display:flex;flex-direction:column;align-items:center;justify-content:center;flex-shrink:0;min-width:130px;line-height:1}.brand-image{display:flex;align-items:center;justify-content:center;color:white;text-decoration:none}.brand-image img{display:block;width:auto;height:auto;max-height:38px;max-width:150px;object-fit:contain}.brand-sub{font-size:9px;letter-spacing:1.5px;color:#C8E0E5;margin-top:6px}.brand-fallback{font-weight:bold;color:white;font-size:20px}.desktop-nav{display:flex;gap:clamp(9px,1.25vw,20px);flex:1;align-items:center;justify-content:center;min-width:0}.desktop-nav a{white-space:nowrap;font-size:clamp(12px,.95vw,14px);color:#E7F1F4;text-decoration:none;padding:24px 0 20px;border-bottom:3px solid transparent}.desktop-nav a:hover,.desktop-nav a[aria-current=page]{color:white;border-bottom-color:#57BCC1;font-weight:700}.registration{white-space:nowrap;background:#168E96;color:white;padding:8px 14px;border-radius:8px;text-decoration:none;font-size:14px}.registration:hover{background:#116E75;color:white}.mobile-nav{display:none}.breadcrumbs{padding-top:18px;padding-bottom:2px;font-size:14px;color:#647981}.breadcrumbs span{margin:0 6px}.hero{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);align-items:center;gap:40px;padding:44px 0 26px}.hero-copy p{font-size:17px;max-width:690px}.eyebrow{display:block;color:#168E96;font-size:13px;letter-spacing:.14em;font-weight:700;margin-bottom:12px}.link-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:22px}.link-row a{display:inline-block;padding:7px 15px;border:1px solid #b4cdd2;border-radius:8px;text-decoration:none;background:white}.image-holder{margin:0;display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:0;width:100%;padding:8px;background:#EAF0F2;border-radius:12px}.image-holder img{display:block;width:auto;height:auto;max-width:100%;max-height:var(--image-limit,210px);object-fit:contain;object-position:center}.image-holder figcaption{font-size:13px;color:#647981;margin-top:8px;text-align:center}.image-holder--hero{--image-limit:290px}.image-holder--feature{--image-limit:240px}.image-holder--inline{--image-limit:180px}.image-holder--rules{--image-limit:210px}.image-holder--banner{--image-limit:190px}.image-holder--portrait{--image-limit:330px;max-width:310px;margin-inline:auto}.image-missing{font-size:13px;color:#647981;margin:0;padding:10px}.section{margin:50px auto 62px}.section-intro{max-width:800px}.section-head{display:flex;align-items:baseline;gap:20px;border-bottom:1px solid #D9E3E6;padding-bottom:16px;margin-bottom:25px}.section-head small{color:#647981}.route-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.route-group{background:white;border-top:3px solid #168E96;padding:22px;border-radius:5px}.route-entry+.route-entry{border-top:1px solid #D9E3E6;margin-top:20px;padding-top:18px}.route-entry strong{display:block;font-size:17px;color:#193946}.route-entry span{font-size:12px;color:#168E96}.route-entry p{font-size:14px;line-height:1.7;margin:8px 0}.feature-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:26px}.paper{background:white;border:1px solid #D9E3E6;border-radius:10px;padding:26px}.paper h3{margin-bottom:10px}.paper p:last-child{margin-bottom:0}.side-notes{border-left:3px solid #168E96;padding-left:23px}.side-notes article+article{border-top:1px solid #D9E3E6;padding-top:16px;margin-top:16px}.split{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:38px}.split>*,.feature-grid>*,.editor-layout>*{min-width:0}.reverse .image-holder{order:-1}.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;counter-reset:phase}.timeline a{border-left:3px solid #168E96;padding:12px 15px;background:white;min-width:0;display:block;text-decoration:none}.timeline strong{display:block}.notice{font-size:14px;background:#EAF0F2;border-left:4px solid #168E96;padding:16px 22px;border-radius:4px}.page-top{padding:30px 0 18px}.page-top p{max-width:810px;font-size:17px}.page-top--dark{background:#1A4050;padding:40px 30px;border-radius:12px;margin-top:25px}.page-top--dark h1,.page-top--dark p{color:white}.page-top--dark .eyebrow{color:#89DBD9}.local-index{display:flex;flex-wrap:wrap;gap:10px;padding:18px 0 23px}.local-index a{padding:5px 12px;border:1px solid #C8D7DC;background:white;border-radius:7px;text-decoration:none}.article{max-width:780px;margin-inline:auto}.article section{margin:40px 0}.article p{line-height:1.85}.article h2{border-bottom:1px solid #D9E3E6;padding-bottom:12px}.article-wide{max-width:1040px;margin:30px auto}.editor-layout{display:grid;grid-template-columns:210px minmax(0,1fr);gap:40px;align-items:start}.editor-aside{position:sticky;top:24px;background:#EAF0F2;padding:20px;border-radius:8px}.editor-aside a{display:block;margin:9px 0}.editor-article{max-width:790px}.editor-article section{margin:0 0 40px}.compare-wrap{max-width:100%;overflow-x:auto;border:1px solid #D9E3E6;border-radius:7px;background:white}.compare{width:100%;border-collapse:collapse;min-width:560px;text-align:left}.compare caption{text-align:left;font-weight:700;color:#193946;padding:15px}.compare th,.compare td{padding:14px 16px;border-bottom:1px solid #D9E3E6;vertical-align:top}.compare th{background:#EAF0F2;color:#193946}.step-list{counter-reset:steps;list-style:none;padding:0}.step-list li{padding:18px 18px 18px 60px;border-left:2px solid #168E96;position:relative;background:white;margin-bottom:9px}.step-list li:before{counter-increment:steps;content:counter(steps,decimal-leading-zero);position:absolute;left:13px;top:16px;color:#168E96;font-weight:bold}.comparison-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.comparison-cards article{background:white;padding:22px;border:1px solid #D9E3E6;border-radius:8px}.analysis-band{padding:28px 0;border-bottom:1px solid #D9E3E6}.analysis-band:nth-child(even){background:#EAF0F2;padding:28px}.exhibition{display:grid;grid-template-columns:1.1fr .9fr;gap:35px;align-items:start}.exhibition:nth-child(even) .image-holder{order:2}.faq-list details{background:white;border-bottom:1px solid #D9E3E6;padding:14px 20px}.faq-list summary{cursor:pointer;font-weight:bold;color:#193946}.faq-list p{margin:10px 0 2px}.related{margin:55px auto;max-width:1040px;border-top:2px solid #168E96;padding-top:20px}.related ul{padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;list-style:none}.related li{background:white;padding:16px;margin:0}.related li a{display:block;font-weight:bold}.related li span{display:block;font-size:14px}.site-footer{background:#0C2632;color:#D2E2E7;margin-top:65px;padding:40px 0 20px}.site-footer h2{color:white;font-size:20px}.footer-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:60px}.footer-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.footer-links a{color:#D2E2E7;font-size:14px}.copyright{font-size:12px;border-top:1px solid #35515D;padding-top:17px;margin-top:25px}.chapter-note{font-size:14px;color:#647981;padding:14px 0;border-top:1px solid #D9E3E6;border-bottom:1px solid #D9E3E6}.term-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.term-list div{background:#EAF0F2;padding:14px}.term-list dt{font-weight:bold;color:#193946}.term-list dd{margin:0}.guide-table{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.guide-table a{background:white;padding:13px 18px;text-decoration:none;border-left:3px solid #168E96}.guide-table a span{display:block;font-size:13px;color:#647981}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}section[id]{scroll-margin-top:95px}@media(max-width:1100px){.header-inner{gap:12px}.desktop-nav{gap:9px}.desktop-nav a{font-size:12px}}@media(max-width:980px){.header-inner{width:calc(100% - 44px);height:64px;min-height:64px;justify-content:space-between;display:grid;grid-template-columns:1fr auto 1fr;gap:8px}.brand{grid-column:2;grid-row:1;min-width:0}.brand-image img{max-height:30px;max-width:132px}.brand-sub{font-size:8px}.registration{grid-column:3;grid-row:1;justify-self:end;font-size:12px;padding:7px 9px}.desktop-nav{display:none}.mobile-nav{display:block;grid-column:1;grid-row:1;justify-self:start;order:-1}.mobile-nav summary{list-style:none;cursor:pointer;display:grid;place-items:center;width:42px;height:42px;border-radius:7px;background:#1A4050;color:white}.mobile-nav summary::-webkit-details-marker{display:none}.menu-glyph{font-size:22px}.mobile-nav-panel{position:absolute;top:64px;left:0;right:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;background:#122E3B;padding:22px max(22px,calc((100vw - 1220px)/2));box-shadow:0 8px 14px #09222b55}.nav-group h2{color:#8ED3D5;font-size:14px;margin:0 0 8px}.nav-group a{display:block;color:white;padding:5px 0;text-decoration:none}.wrap{width:calc(100% - 44px)}.hero{gap:24px}.route-groups{gap:10px}}@media(max-width:760px){.hero,.split,.feature-grid,.editor-layout,.exhibition,.footer-grid{grid-template-columns:1fr}.hero{padding-top:25px}.hero .image-holder{max-width:620px}.route-groups{grid-template-columns:1fr}.route-group{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.route-entry+.route-entry{border:0;border-left:1px solid #D9E3E6;margin:0;padding:0 0 0 20px}.side-notes{border-left:0;border-top:3px solid #168E96;padding:17px 0 0}.editor-aside{position:static}.reverse .image-holder,.exhibition:nth-child(even) .image-holder{order:0}.timeline{grid-template-columns:repeat(2,1fr)}.comparison-cards,.related ul{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,1fr)}.article{max-width:100%}}@media(max-width:640px){body{font-size:15px;line-height:1.78}.wrap{width:calc(100% - 32px)}.header-inner{width:calc(100% - 32px)}.hero-copy p,.page-top p{font-size:15px}.section{margin:34px auto 44px}.paper{padding:18px}.route-group{grid-template-columns:1fr}.route-entry+.route-entry{border-left:0;border-top:1px solid #D9E3E6;padding:14px 0 0}.image-holder--hero{--image-limit:195px}.image-holder--feature{--image-limit:180px}.image-holder--inline{--image-limit:140px}.image-holder--rules{--image-limit:165px}.image-holder--banner{--image-limit:125px}.image-holder--portrait{--image-limit:275px;max-width:240px}.mobile-nav-panel{grid-template-columns:1fr;gap:12px;max-height:calc(100vh - 64px);overflow:auto}.nav-group{border-bottom:1px solid #35515D;padding-bottom:10px}.page-top--dark{padding:25px 17px}.timeline{grid-template-columns:1fr}.term-list,.guide-table{grid-template-columns:1fr}.footer-grid{gap:22px}.site-footer{margin-top:42px}.exhibition{gap:18px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}