@font-face{font-family:Barlow Condensed;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/barlow-condensed-vietnamese-600-normal.A5AYRdjN.woff2)format("woff2"),url(/_astro/barlow-condensed-vietnamese-600-normal.CNlPk46_.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Barlow Condensed;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/barlow-condensed-latin-ext-600-normal.18ESti3H.woff2)format("woff2"),url(/_astro/barlow-condensed-latin-ext-600-normal.Clv9cIcR.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Barlow Condensed;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/barlow-condensed-latin-600-normal.DepVgxBB.woff2)format("woff2"),url(/_astro/barlow-condensed-latin-600-normal.BFJEwTuo.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Barlow Condensed;font-style:normal;font-display:swap;font-weight:700;src:url(/_astro/barlow-condensed-vietnamese-700-normal.DYeBwlKR.woff2)format("woff2"),url(/_astro/barlow-condensed-vietnamese-700-normal.DhIzd8Tb.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Barlow Condensed;font-style:normal;font-display:swap;font-weight:700;src:url(/_astro/barlow-condensed-latin-ext-700-normal.CwuXbfVR.woff2)format("woff2"),url(/_astro/barlow-condensed-latin-ext-700-normal.BIHFfxf0.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Barlow Condensed;font-style:normal;font-display:swap;font-weight:700;src:url(/_astro/barlow-condensed-latin-700-normal.v1xN8_Wq.woff2)format("woff2"),url(/_astro/barlow-condensed-latin-700-normal.Dmwat-ge.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--navy:#0b1f4b;--saffron:#e8770c;--ink:#1a1f2b;--muted:#5b6475;--line:#dde2ea;--bg:#fff;--soft:#f5f7fa;--tint:#fff6ec;--tint-line:#f2d2ae;--btn:#b95600;--btn-hover:#9c4800;--display:"Barlow Condensed", system-ui, sans-serif;--gutter:16px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--ink);margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.wrap{max-width:880px;padding-left:var(--gutter);padding-right:var(--gutter);margin:0 auto}a{color:#0b4fb3}img{max-width:100%;height:auto}:focus-visible{outline:3px solid var(--saffron);outline-offset:2px}.site-header{border-bottom:3px solid var(--saffron);background:var(--bg)}.header-row{flex-direction:column;align-items:flex-start;gap:4px;padding-top:10px;display:flex}.logo img{width:160px;height:auto;display:block}.site-header nav{width:calc(100% + 2 * var(--gutter));margin:0 calc(-1 * var(--gutter));padding:0 var(--gutter);scrollbar-width:none;gap:2px 18px;display:flex;overflow-x:auto}.site-header nav::-webkit-scrollbar{display:none}.site-header nav a{min-height:44px;color:var(--navy);font:600 1.15rem/1 var(--display);letter-spacing:.2px;border-bottom:3px solid #0000;flex:none;align-items:center;text-decoration:none;display:flex}.site-header nav a[aria-current]{border-bottom-color:var(--saffron)}main{padding-top:8px;padding-bottom:32px}.crumbs{color:var(--muted);margin:8px 0;font-size:14px}h1{color:var(--navy);font:700 2rem/1.08 var(--display);margin:12px 0 14px}h2{color:var(--navy);font:600 1.5rem/1.15 var(--display);border-top:1px solid var(--line);margin:2em 0 .6em;padding-top:.9em;scroll-margin-top:12px}h3{color:var(--navy);margin:1.5em 0 .4em;font-size:1.05rem}article.page>p,article.page>ul>li,article.page>ol>li{max-width:70ch}.lead{font-size:1.05rem}figure{margin:1em 0}article.page ol:not([class]){counter-reset:step;margin:1em 0 1.4em;padding:0;list-style:none}article.page ol:not([class])>li{counter-increment:step;min-height:40px;padding:4px 0 16px 48px;position:relative}article.page ol:not([class])>li>p{margin:0 0 .4em}article.page ol:not([class])>li:before{content:counter(step);background:var(--navy);color:#fff;width:34px;height:34px;font:700 1.1rem/34px var(--display);text-align:center;box-shadow:0 0 0 4px #fff, 0 0 0 5px var(--tint-line);border-radius:50%;position:absolute;top:0;left:0}article.page ol:not([class])>li:not(:last-child):after{content:"";background:linear-gradient(var(--tint-line), var(--line));width:2px;position:absolute;top:38px;bottom:2px;left:16px}figcaption{color:var(--muted);font-size:14px}.tbl{border:1px solid var(--line);background:#fff;border-radius:12px;margin:1.2em 0;overflow-x:auto;box-shadow:0 1px #0b1f4b0a}table{border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:12px;width:100%;margin:1.2em 0;font-size:14.5px;line-height:1.45;overflow:hidden}.tbl>table{border:0;border-radius:0;margin:0;overflow:visible}table:not(.tbl>table){width:max-content;max-width:100%;display:block;overflow-x:auto}th,td{border:0;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:10px 12px}thead th{background:var(--navy);color:#fff;font:600 1.02rem/1.2 var(--display);letter-spacing:.2px;white-space:nowrap;vertical-align:bottom}tbody th{color:var(--navy);font-weight:700}tbody tr:nth-child(2n)>*{background:#f7f9fc}tbody tr:last-child>*{border-bottom:0}td:first-child{color:var(--navy);font-weight:600}td[style*=right],th[style*=right]{white-space:nowrap;font-variant-numeric:tabular-nums}td:first-child a{font-weight:600}@media (width>=560px){td{min-width:6.5em}td:first-child{min-width:9em}}.answer{background:var(--tint);border:1px solid var(--tint-line);border-radius:12px;margin:0 0 18px;padding:2px 14px}.answer p{max-width:none;font-size:1.02rem}.toc{border:1px solid var(--line);background:#fff;border-radius:12px;margin:0 0 8px;padding:8px 14px}.toc summary{cursor:pointer;min-height:36px;font:600 1.2rem/1.4 var(--display);color:var(--navy);align-items:center;display:flex}.toc ul{margin:6px 0 4px;padding:0;list-style:none}.toc li{break-inside:avoid;padding:4px 0;font-size:15px}.toc a{text-decoration:none}.toc a:hover{text-decoration:underline}.ticket{border:1.5px solid var(--navy);background:#fff;border-radius:16px;margin:0 0 28px;position:relative;overflow:hidden}.ticket-head{background:var(--navy);color:#fff;font:600 1.25rem/1.1 var(--display);align-items:center;gap:10px;padding:12px 14px;display:flex}.ticket-head .ticon{color:#fff}.ticket-body{padding:14px 14px 16px}.ticket .out{background:var(--soft);border-top:2px dashed #b9c2d0;margin:16px -14px -16px;padding:16px 14px;position:relative}.ticket .out:empty{display:none}.ticket .out:before,.ticket .out:after{content:"";background:var(--bg);border:1.5px solid var(--navy);border-radius:50%;width:24px;height:24px;position:absolute;top:-13px}.ticket .out:before{clip-path:inset(0 0 0 50%);left:-13px}.ticket .out:after{clip-path:inset(0 50% 0 0);right:-13px}.ticket .big{font:700 2.4rem/1 var(--display);color:var(--navy);margin:4px 0 6px}.ticket table{background:#fff}.tool label{color:var(--navy);margin:10px 0 4px;font-size:15px;font-weight:600;display:block}.tool input,.tool select{background:#fff;border:1px solid #aab4c3;border-radius:8px;width:100%;min-height:46px;padding:8px 10px;font-size:16px}.tool input:focus-visible,.tool select:focus-visible{outline:3px solid var(--saffron);outline-offset:1px;border-color:var(--navy)}.tool .row{gap:0;display:grid}.tool button{background:var(--btn);color:#fff;cursor:pointer;border:0;border-radius:8px;width:100%;min-height:48px;margin-top:14px;padding:11px 22px;font-size:16px;font-weight:800}.tool button:hover{background:var(--btn-hover)}.tool button:focus-visible{outline:3px solid var(--navy);outline-offset:2px}.tool .muted,.tool-note{color:var(--muted);font-size:14px}.tool .ok{color:#11743b;font-weight:700}.tool .no{color:#b3261e;font-weight:700}.tool-hero{gap:10px;margin:6px 0 18px;display:grid}.tool-hero-icon{background:var(--soft);border:1px solid var(--line);border-radius:16px;place-items:center;width:64px;height:64px;display:grid}.tool-hero-icon .ticon{width:44px;height:44px}.tool-hero h1{margin:0 0 8px}.tool-hero .lead{margin:0 0 6px}.tool-meta{color:var(--muted);margin:0;font-size:14px}.related{margin-top:32px}.board .ticket-head{font-size:1.2rem}.board-rows{margin:0;padding:0;list-style:none}.board-rows li{border-bottom:1px solid var(--line);grid-template-columns:64px 1fr;align-items:baseline;gap:4px 12px;padding:12px 14px;display:grid}.board-no{font:700 1.4rem/1 var(--display);color:var(--navy);background:var(--tint);border:1px solid var(--tint-line);text-align:center;border-radius:6px;padding:5px 6px;text-decoration:none}.board-no:hover{background:var(--saffron)}.board-route{color:var(--ink);font-weight:600}.board-route small{color:var(--muted);font-weight:400}.board-time{font:700 1.35rem/1 var(--display);color:var(--navy);grid-column:2}.board-meta{color:var(--muted);flex-wrap:wrap;grid-column:1/-1;gap:4px 14px;font-size:14px;display:flex}.board-note{color:var(--muted);background:var(--soft);margin:0;padding:10px 14px;font-size:14px}.tcards{grid-template-columns:1fr;gap:12px;margin:14px 0 8px;padding:0;list-style:none;display:grid}.tcard{border:1px solid var(--line);background:#fff;border-radius:12px;flex-direction:column;gap:6px;padding:14px 14px 0;display:flex;position:relative}.tcard:focus-within,.tcard:hover{border-color:var(--navy)}.tcard h3{font:600 1.3rem/1.15 var(--display);margin:4px 0 0}.tcard h3 a{color:var(--navy);text-decoration:none}.tcard h3 a:after{content:"";position:absolute;inset:0}.tcard h3 a:focus-visible{outline:none}.tcard:has(h3 a:focus-visible){outline:3px solid var(--saffron);outline-offset:2px}.tcard p{color:var(--muted);border-bottom:2px dashed var(--line);flex:1;margin:0;padding-bottom:12px;font-size:15px}.tcard .btn{background:var(--btn);color:#fff;border-radius:8px;align-self:flex-start;margin:12px 0 14px;padding:10px 16px;font-weight:800;text-decoration:none}.tcard:hover .btn{background:var(--btn-hover)}@media (width>=560px){.tcards{grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}.tool .row{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:0 16px}.tool button{width:auto}.toc ul{columns:2 240px;column-gap:24px}}@media (width>=760px){body{font-size:17px}.header-row{flex-flow:wrap;justify-content:space-between;align-items:center;gap:8px 20px;padding-bottom:6px}.logo img{width:180px}.site-header nav{flex-wrap:wrap;width:auto;margin:0;padding:0;overflow:visible}main{padding-top:12px;padding-bottom:40px}h1{margin:14px 0 16px;font-size:2.5rem}h2{margin-top:2.2em;padding-top:1em;font-size:1.75rem}h3{font-size:1.08rem}table{font-size:15px}th,td{padding:8px 12px}.answer{margin-bottom:20px;padding:4px 18px}.answer p{font-size:1.05rem}.toc{padding:10px 18px}.ticket{margin-bottom:32px}.ticket-head{padding:12px 20px;font-size:1.35rem}.ticket-body{padding:18px 20px 20px}.ticket .out{margin:20px -20px -20px;padding:18px 20px 20px}.ticket .big{font-size:2.6rem}.tool-hero{grid-template-columns:auto 1fr;align-items:start;gap:18px;margin:8px 0 22px}.tool-hero-icon{border-radius:20px;width:84px;height:84px}.tool-hero-icon .ticon{width:60px;height:60px}.tool-hero h1{margin-top:2px;font-size:2.3rem}.board-rows li{grid-template-columns:80px 1fr auto;gap:2px 16px;padding:12px 20px}.board-time{text-align:right;grid-column:auto;font-size:1.45rem}.board-meta{grid-column:2/-1}.board-note{padding:10px 20px}.tcard{padding:16px 16px 0}}@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}@view-transition{navigation:auto}a,button,input,select,summary,.tcard,.tcard .btn,.board-no,.social a{transition:color .18s,background-color .18s,border-color .18s,box-shadow .18s}.to-top{transition:opacity .25s,transform .25s,background-color .18s}}.to-top{right:max(16px, env(safe-area-inset-right));bottom:max(16px, env(safe-area-inset-bottom));z-index:50;background:var(--btn);color:#fff;cursor:pointer;opacity:0;pointer-events:none;border:0;border-radius:50%;place-items:center;width:48px;height:48px;display:grid;position:fixed;transform:translateY(12px);box-shadow:0 4px 14px #0b1f4b40}.to-top.show{opacity:1;pointer-events:auto;transform:none}.to-top:hover{background:var(--btn-hover)}.to-top:focus-visible{outline:3px solid var(--navy);outline-offset:3px}.site-footer{--char:#232529;--char-2:#2d3035;--silver:#c9cdd3;background:var(--char);color:var(--silver);margin-top:24px;font-size:15px}.site-footer a{color:#fff;text-decoration:none}.site-footer a:hover{color:#ffb36b}.rail-scene{--tw-f:160px;--tw-b:116px;--run-f:12s;--run-b:17s;background:#fdeedd url(/footer-scene.svg) bottom/cover no-repeat;height:92px;position:relative;overflow:hidden}.rail-scene .track{position:absolute;left:0;right:0}.rail-scene .track.front{background:linear-gradient(#4f5767,#4f5767) top/100% 3px no-repeat,repeating-linear-gradient(90deg,#7d604b 0 7px,#0000 7px 19px) 0 3px/100% 5px no-repeat,linear-gradient(#c7ccd5,#aeb5c1) bottom/100% 7px no-repeat;height:15px;bottom:0}.rail-scene .track.back{opacity:.7;background:linear-gradient(#6b7385,#6b7385) top/100% 2px no-repeat,repeating-linear-gradient(90deg,#8d7562 0 5px,#0000 5px 14px) 0 2px/100% 3px no-repeat,linear-gradient(#d4d9e1,#c2c8d2) bottom/100% 5px no-repeat;height:10px;bottom:22px}.rail-scene .lane{height:0;position:absolute;left:0;right:0}.rail-scene .lane.ltr{bottom:14px}.rail-scene .lane.rtl{bottom:31px}.rail-scene .train{max-width:none;height:auto;position:absolute;bottom:0}.rail-scene .ltr .train{width:var(--tw-f);left:calc(-1 * var(--tw-f))}.rail-scene .rtl .train{width:var(--tw-b);opacity:.92;left:100%}.rail-scene .scene-art{position:absolute;inset:0}.rail-scene .lane.ltr{animation:vb-ltr var(--run-f) linear infinite;animation-delay:calc(var(--run-f) * -.28)}.rail-scene .lane.rtl{animation:vb-rtl var(--run-b) linear infinite;animation-delay:calc(var(--run-b) * -.3)}@keyframes vb-ltr{to{transform:translateX(calc(100% + var(--tw-f)))}}@keyframes vb-rtl{to{transform:translateX(calc(-100% - var(--tw-b)))}}@media (width>=640px){.rail-scene{--tw-f:230px;--tw-b:168px;--run-f:16s;--run-b:23s;height:118px}.rail-scene .lane.rtl{bottom:31px}}@media (width>=1100px){.rail-scene{--tw-f:280px;--tw-b:200px;--run-f:20s;--run-b:29s;height:132px}}.livery{background:linear-gradient(var(--saffron) 0 8px, #8a8d91 8px 12px);height:12px}.site-footer .foot-grid{max-width:1180px;padding:32px var(--gutter,16px) 24px;grid-template-columns:1fr;gap:26px;margin:0 auto;display:grid}.foot-h{font:600 1.15rem/1.2 var(--display);color:#fff;border:0;margin:0 0 10px;padding:0}.foot-brand p{max-width:36ch;margin:0 0 12px}.foot-logo{background:#fff;border-radius:10px;margin-bottom:14px;padding:8px 12px;display:inline-block}.foot-logo img{width:170px;height:auto;display:block}.not-official{background:var(--char-2);border:1px solid #3a3e45;border-radius:10px;padding:10px 12px;font-size:14px}.not-official strong{color:#ffb36b}.social{flex-wrap:wrap;gap:10px;margin:0;padding:0;list-style:none;display:flex}.social a{background:var(--char-2);color:#fff;border:1px solid #3a3e45;border-radius:50%;place-items:center;width:44px;height:44px;display:grid}.social a:hover{background:var(--saffron);color:#fff;border-color:var(--saffron)}.foot-col ul{margin:0;padding:0;list-style:none;display:grid}.foot-col li a{padding:7px 0;display:block}.site-footer .official{border-top:1px solid #3a3e45;grid-column:1/-1;margin:0;padding-top:14px;font-size:13px;line-height:1.9}.official span{color:var(--silver);margin-right:4px}.official a{color:var(--silver);margin-right:12px;text-decoration:underline #555a62}.foot-bottom{background:#18191c;font-size:14px}.site-footer .foot-bottom .wrap{gap:8px;max-width:1180px;padding-top:16px;padding-bottom:18px;display:grid}.foot-bottom p{margin:0}.foot-bottom nav{flex-wrap:wrap;gap:4px 16px;display:flex}.foot-bottom nav a{padding:4px 0}@media (width>=640px){.site-footer .foot-grid{grid-template-columns:1fr 1fr;gap:28px 32px;padding-top:40px}.foot-brand{grid-column:1/-1}.foot-col li a{padding:4px 0}}@media (width>=980px){.site-footer .foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;padding-top:44px;padding-bottom:28px}.foot-brand{grid-column:auto}.site-footer .foot-bottom .wrap{flex-wrap:wrap;justify-content:space-between;align-items:center;display:flex}}