*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:105px}body{margin:0;background:#F6F8F8;color:#374D58;font:16.5px/1.82 Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:break-word}a{color:#226D9D;text-underline-offset:3px}a:hover{color:#126D77}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #168E96;outline-offset:4px}h1,h2,h3{color:#193946;line-height:1.3;letter-spacing:.01em}h1{font-size:clamp(34px,3.2vw,42px);margin:0 0 22px}h2{font-size:clamp(24px,2.2vw,28px);margin:0 0 20px}h3{font-size:20px;margin:24px 0 8px}p{margin:0 0 17px}ul,ol{padding-left:1.5em}li{margin:7px 0}figure{margin:0}img{max-width:100%}.wrap{width:min(100% - 56px,1220px);margin-inline:auto}.site-main{min-height:65vh}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:absolute;left:8px;top:-70px;padding:8px 14px;background:white;z-index:200}.skip-link:focus{top:8px}.site-header{background:#122E3B;color:white;position:relative;z-index:50}.header-inner{width:min(100% - 56px,1220px);height:76px;margin:auto;display:flex;align-items:center;gap:18px;min-width:0}.brand{display:flex;align-items:center;gap:9px;flex:none;text-decoration:none;color:white;min-width:0}.brand img{display:block;width:auto;height:auto;max-height:38px;max-width:155px;object-fit:contain}.brand-word{font-size:23px;font-weight:800;color:white;white-space:nowrap}.brand-en{font-size:10px;color:#bcd7db;letter-spacing:.11em;white-space:nowrap}.desktop-nav{display:flex;flex:1;align-items:center;justify-content:center;gap:clamp(7px,1vw,19px);min-width:0}.desktop-nav a{display:inline-flex;align-items:center;height:75px;white-space:nowrap;font-size:clamp(12px,.88vw,14px);color:#e2eef0;text-decoration:none;border-bottom:3px solid transparent}.desktop-nav a:hover,.desktop-nav a[aria-current="page"]{color:white;border-bottom-color:#60c4c6;font-weight:700}.entry-link{display:inline-flex;align-items:center;justify-content:center;padding:7px 13px;border:1px solid #87bac1;border-radius:7px;color:#fff;text-decoration:none;font-size:14px;white-space:nowrap;flex:none}.entry-link:hover{color:#fff;background:#1A4050}.mobile-menu{display:none}.breadcrumb{font-size:14px;padding-top:21px;padding-bottom:14px;color:#647981}.breadcrumb a{color:#226D9D}.breadcrumb span{margin-right:7px}.page-intro{padding:27px 0 37px}.page-intro p{max-width:780px;font-size:17px}.eyebrow{display:block;font-size:13px;text-transform:uppercase;letter-spacing:.13em;color:#168E96;font-weight:bold;margin-bottom:12px}.surface{background:#fff;border:1px solid #D9E3E6;border-radius:12px}.section{margin-bottom:58px}.section-tight{margin-bottom:35px}.reading-column{max-width:780px}.wide-reading{max-width:1040px}.text-muted{color:#647981}.lead{font-size:18px;color:#354e5a}.intro-hero{display:grid;grid-template-columns:minmax(0,1.38fr) minmax(0,1fr);align-items:center;gap:30px;padding:38px 0 45px}.intro-hero .hero-copy{min-width:0}.hero-actions{display:flex;flex-wrap:wrap;gap:13px;margin-top:22px}.action-link{border:1px solid #168E96;border-radius:8px;display:inline-block;padding:9px 18px;text-decoration:none;font-weight:700;color:#126D77}.action-link.primary{background:#168E96;color:white}.action-link:hover{background:#EAF0F2}.action-link.primary:hover{background:#126D77}.image-holder{display:flex;justify-content:center;align-items: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--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-note{font-size:13px;color:#647981;background:#EAF0F2;border-left:3px solid #168E96;padding:8px 12px;border-radius:4px;margin:0}.section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:15px;padding-bottom:12px;border-bottom:2px solid #D9E3E6;margin-bottom:24px}.section-heading h2{margin:0}.section-heading small{color:#647981}.route-groups{display:grid;gap:2px;background:#D9E3E6;border:1px solid #D9E3E6;border-radius:10px;overflow:hidden}.route-row{display:grid;grid-template-columns:1fr 1fr;gap:2px;min-width:0}.route-item{display:flex;gap:18px;background:#fff;padding:24px;min-width:0;text-decoration:none;color:#374D58}.route-item:hover{background:#f2f9f9;color:#374D58}.route-item .num{font-size:26px;font-weight:bold;color:#168E96}.route-item strong{display:block;font-size:18px;color:#193946}.route-item small{display:block;font-size:14px;color:#647981;line-height:1.7;margin-top:4px}.editorial-split{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:36px}.note-stack{border-left:2px solid #168E96;padding-left:22px}.note-stack h3:first-child{margin-top:0}.alternating{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:32px}.alternate-copy{min-width:0}.thought-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.thought-grid article{border-top:3px solid #168E96;padding:16px 12px;background:#fff}.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;counter-reset:step}.timeline article{padding:16px 18px;background:#EAF0F2;border-radius:9px;min-width:0}.timeline article:before{counter-increment:step;content:'0' counter(step);display:block;font-size:22px;font-weight:700;color:#168E96;margin-bottom:12px}.timeline h3{margin:0 0 8px}.article-section{padding:26px 0;border-top:1px solid #D9E3E6}.article-section:first-child{border-top:0}.quick-index{padding:16px 20px;background:#EAF0F2;border:1px solid #D9E3E6;border-radius:9px;margin-bottom:30px}.quick-index strong{display:block;margin-bottom:8px;color:#193946}.quick-index div{display:flex;flex-wrap:wrap;gap:10px 21px}.quick-index a{font-size:14px}.editorial-layout{display:grid;grid-template-columns:195px minmax(0,1fr);gap:34px;align-items:start}.side-index{position:sticky;top:24px;padding:16px;border-left:3px solid #168E96;background:#EAF0F2}.side-index a{display:block;margin:10px 0}.table-scroll{overflow-x:auto;max-width:100%;border:1px solid #D9E3E6;border-radius:9px;margin:23px 0}table{border-collapse:collapse;width:100%;min-width:600px;background:#fff;font-size:15px}caption{caption-side:top;text-align:left;background:#EAF0F2;padding:10px 14px;color:#193946;font-weight:bold}th,td{text-align:left;vertical-align:top;padding:13px 16px;border-bottom:1px solid #D9E3E6}th{color:#193946;background:#f0f5f6}tr:last-child td{border-bottom:0}.full-bleed-band{background:#1A4050;color:#ecf4f4;padding:30px;border-radius:10px}.full-bleed-band h2,.full-bleed-band h3{color:white}.full-bleed-band a{color:#93e1e1}.quote-note{border-left:4px solid #168E96;padding:12px 23px;background:#EAF0F2;margin:25px 0;color:#193946}.concept-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.concept-columns article{padding:22px;background:white;border:1px solid #D9E3E6;border-top:4px solid #168E96;border-radius:9px}.concept-columns h2{font-size:21px}.feature-strip{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:30px;align-items:center}.steps{counter-reset:steps;padding:0;list-style:none}.steps li{position:relative;padding:4px 0 22px 54px;border-left:1px solid #D9E3E6;margin-left:18px}.steps li:before{counter-increment:steps;content:counter(steps);position:absolute;top:2px;left:-18px;width:35px;height:35px;background:#168E96;color:#fff;border-radius:50%;display:grid;place-items:center;font-weight:bold}.gallery-line{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:26px;align-items:center}.gallery-line.reverse{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr)}.faq-list{border-top:1px solid #D9E3E6}.faq-list details{border-bottom:1px solid #D9E3E6;background:#fff;padding:0 18px}.faq-list summary{cursor:pointer;font-weight:700;color:#193946;padding:16px 3px}.faq-list p{margin:0;padding:0 3px 18px}.related{border-top:3px solid #168E96;padding:20px 0 10px;margin:48px 0}.related h2{font-size:24px}.related-links{display:flex;flex-wrap:wrap;gap:11px}.related-links a{display:inline-block;padding:11px 16px;border:1px solid #D9E3E6;border-radius:8px;background:#fff;text-decoration:none}.guide-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:30px}.guide-grid>div{min-width:0}.guide-link-table{display:grid;grid-template-columns:1fr 1fr;gap:10px}.guide-link-table a{display:block;padding:13px 15px;background:#EAF0F2;border-radius:7px}.site-footer{background:#0C2632;color:#c4d8dc;padding:42px 0 25px}.footer-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:60px}.footer-intro{max-width:520px}.footer-intro>strong{font-size:21px;color:#fff}.footer-intro>strong span{font-size:11px;letter-spacing:.12em;font-weight:400;color:#a9cbd0}.site-footer nav strong{display:block;color:#fff;margin-bottom:14px}.footer-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.site-footer a{color:#c4d8dc;text-decoration:none;font-size:14px}.site-footer a:hover{text-decoration:underline}.footer-bottom{border-top:1px solid #31515b;padding-top:20px;margin-top:24px;font-size:13px;color:#b2c7cd}@media(max-width:1130px){.brand-en{display:none}.header-inner{gap:12px}.desktop-nav{gap:9px}.desktop-nav a{font-size:12px}.entry-link{padding:7px 9px}}@media(max-width:980px){.header-inner{height:64px;justify-content:space-between}.desktop-nav{display:none}.mobile-menu{display:block;order:0;flex:0 0 44px}.brand{order:1;margin:auto}.brand img{max-height:30px}.brand-en{display:block}.entry-link{order:2}.mobile-menu summary{width:44px;height:44px;display:grid;place-items:center;cursor:pointer;color:#fff;font-size:25px;list-style:none;border:1px solid #53747c;border-radius:6px}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu[open] summary{background:#1A4050}.mobile-panel{position:absolute;top:64px;left:0;right:0;background:#122E3B;padding:16px max(22px,calc((100vw - 1220px)/2));border-top:1px solid #43616a;box-shadow:0 9px 16px #0a1a2070;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.mobile-group strong{display:block;color:#8fced1;margin-bottom:8px}.mobile-group a{display:block;padding:5px 0;color:white;text-decoration:none}.menu-close{grid-column:1/-1;justify-self:start;color:#fff;border:1px solid #648e96;background:transparent;border-radius:6px;padding:7px 13px;cursor:pointer}.wrap,.header-inner{width:calc(100% - 44px)}.editorial-split{gap:24px}.intro-hero{gap:22px}.section{margin-bottom:45px}}@media(max-width:760px){body{font-size:16px}.intro-hero,.editorial-split,.alternating,.editorial-layout,.feature-strip,.gallery-line,.gallery-line.reverse,.guide-grid{grid-template-columns:1fr}.intro-hero .image-holder{max-width:620px}.intro-hero{padding-top:23px}.side-index{position:static}.concept-columns,.thought-grid{grid-template-columns:1fr 1fr}.timeline{grid-template-columns:1fr 1fr}.mobile-panel{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr;gap:25px}.section{margin-bottom:35px}.page-intro{padding-bottom:24px}}@media(max-width:640px){h1{font-size:28px}h2{font-size:22px}h3{font-size:18px}.wrap,.header-inner{width:calc(100% - 32px)}.brand-en{font-size:9px}.entry-link{font-size:12px;padding:6px 9px}.mobile-panel{padding:16px}.mobile-panel{grid-template-columns:1fr 1fr;gap:14px}.route-row,.thought-grid,.concept-columns,.timeline,.guide-link-table{grid-template-columns:1fr}.route-item{padding:16px;gap:13px}.section-heading{align-items:start;display:block}.section-heading small{display:block;margin-top:7px}.footer-links{grid-template-columns:1fr 1fr}.intro-hero{gap:20px}.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}.site-footer{padding-top:28px}.full-bleed-band{padding:22px}.page-intro p{font-size:16px}}@media(max-width:380px){.brand-en{display:none}.mobile-panel{grid-template-columns:1fr}.entry-link{font-size:12px}.brand-word{font-size:20px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
