@charset "UTF-8";
:root{--ink:#102a2b;--paper:#f5f0e6;--cream:#fffaf0;--rust:#c54f35;--sea:#187f7b;--line:#bec8bd;--muted:#62706c}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75}a{color:inherit;text-decoration:none}a:focus-visible{outline:3px solid var(--rust);outline-offset:4px}.mast{min-height:88px;display:flex;align-items:center;justify-content:space-between;padding:16px max(5vw,24px);border-bottom:1px solid var(--ink);background:rgba(245,240,230,.96);position:relative;z-index:5}.brand{display:flex;gap:10px;align-items:center}.brand>b{background:var(--ink);color:#fff;padding:8px 10px;letter-spacing:.12em}.brand span{font-family:Georgia,"Songti SC",serif;font-size:21px;font-weight:700}.brand small{display:block;font:9px/1.2 Arial;letter-spacing:.22em;color:var(--rust)}.topnav{display:flex;flex-wrap:wrap;gap:5px}.topnav a{padding:8px 10px;border-bottom:2px solid transparent;font-size:14px}.topnav a:hover{border-color:var(--rust)}main{min-height:70vh}.hero{min-height:570px;display:grid;grid-template-columns:1.05fr .95fr;gap:5vw;padding:85px max(6vw,28px);border-bottom:1px solid var(--ink);overflow:hidden}.hero-copy{max-width:720px}.eyebrow,.section-head>span{color:var(--rust);font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}.hero h1{font:clamp(48px,6.6vw,94px)/1.06 Georgia,"Songti SC",serif;margin:20px 0 24px;letter-spacing:-.045em}.hero p{font-size:18px;max-width:680px;color:#395150}.hero-links{display:flex;gap:12px;margin-top:34px}.hero-links a,.button{border:1px solid var(--ink);padding:11px 18px;background:var(--ink);color:#fff}.hero-links a+ a{background:transparent;color:var(--ink)}.route-plate{position:relative;min-height:390px;border:1px solid var(--ink);background:linear-gradient(90deg,transparent 49.8%,rgba(16,42,43,.08) 50%),linear-gradient(transparent 49.8%,rgba(16,42,43,.08) 50%);background-size:54px 54px;transform:rotate(-2deg);box-shadow:15px 15px 0 rgba(197,79,53,.15)}.route-plate:before{content:"ROUTE / TASK / TIME";position:absolute;top:16px;left:20px;font:10px Arial;letter-spacing:.2em}.route-plate i{position:absolute;background:var(--cream);border:1px solid var(--ink);padding:7px 10px;font:700 12px Arial;z-index:2}.origin{left:9%;top:47%}.point.p1{right:31%;top:20%}.point.p2{right:12%;top:37%}.point.p3{right:28%;bottom:20%}.point.p4{right:5%;bottom:8%}.track{position:absolute;height:2px;background:var(--rust);transform-origin:left center;left:27%;top:52%}.t1{width:45%;transform:rotate(-31deg)}.t2{width:60%;transform:rotate(-12deg)}.t3{width:47%;transform:rotate(22deg)}.t4{width:64%;transform:rotate(31deg)}.gate-wrap,.latest,.section-body,.related{padding:80px max(6vw,28px)}.section-head{max-width:760px;margin-bottom:34px}.section-head h2{font:clamp(32px,4.2vw,58px)/1.15 Georgia,"Songti SC",serif;margin:10px 0}.section-head p{color:var(--muted)}.gate-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}.gate{min-height:260px;padding:26px;border:1px solid var(--ink);display:flex;flex-direction:column;transition:.2s}.gate:hover{transform:translateY(-5px);box-shadow:7px 7px 0 var(--ink)}.gate h3{font:32px Georgia,"Songti SC",serif;margin:25px 0 6px}.gate p{color:#314b49}.gate b{margin-top:auto;color:var(--rust)}.gate-harbor{grid-column:span 5;background:#dce7df}.gate-rail{grid-column:span 4;background:#efcfae}.gate-island{grid-column:span 3;background:#d7e9e8}.gate-ocean{grid-column:span 7;background:#b9d5d1}.gate-workbench{grid-column:span 5;background:#edc3b7}.latest{background:var(--cream);border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}.note-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line)}.note-card{padding:28px 24px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:70px 1fr;column-gap:18px}.note-card:nth-child(odd){border-right:1px solid var(--line)}.stamp{font:700 10px Arial;letter-spacing:.12em;color:var(--sea)}.note-card h3{font:24px/1.4 Georgia,"Songti SC",serif;margin:0}.note-card p,.note-card .read{grid-column:2;color:var(--muted)}.note-card .read{color:var(--rust);font-weight:700}.method-strip{display:flex;gap:24px;align-items:center;justify-content:center;flex-wrap:wrap;padding:28px;background:var(--ink);color:#fff}.method-strip span:before{content:"×";margin-right:24px;color:#74c2bb}.section-hero{padding:75px max(6vw,28px);display:grid;grid-template-columns:180px 1fr;gap:4vw;border-bottom:1px solid var(--ink)}.section-hero h1{font:clamp(38px,5vw,72px)/1.14 Georgia,"Songti SC",serif;margin:12px 0;max-width:1100px}.section-hero p{max-width:800px;font-size:18px}.route-code{font:800 clamp(50px,8vw,118px)/1 Arial;color:transparent;-webkit-text-stroke:1px var(--ink);writing-mode:vertical-rl}.section-hero.harbor{background:#dce7df}.section-hero.rail{background:#efcfae}.section-hero.island{background:#d7e9e8}.section-hero.ocean{background:#b9d5d1}.section-hero.workbench{background:#edc3b7}.harbor-board,.rail-board,.island-board,.ocean-board,.tool-board{margin:30px 0 50px;border:1px solid var(--ink);padding:22px}.harbor-board{display:grid;grid-template-columns:1.5fr repeat(4,1fr);background:#102a2b;color:#fff}.harbor-board span{border-left:1px solid #70827f;padding-left:18px}.rail-board{list-style:none;display:flex;gap:0;counter-reset:r;padding:0}.rail-board li{flex:1;padding:26px;border-right:1px solid var(--ink);counter-increment:r}.rail-board li:before{content:"0" counter(r);display:block;color:var(--rust);font:12px Arial;margin-bottom:20px}.rail-board li:last-child{border:0}.island-board{display:flex;align-items:center;justify-content:space-around;background:#fff}.island-board p{padding:16px;border:1px solid var(--sea);border-radius:50%}.ocean-board{display:grid;grid-template-columns:repeat(4,1fr);background:linear-gradient(135deg,#102a2b,#176d6a);color:#fff}.ocean-board span{padding:25px;border-right:1px solid rgba(255,255,255,.3)}.tool-board{display:grid;grid-template-columns:150px repeat(4,1fr);background:repeating-linear-gradient(0deg,#fff,#fff 37px,#d8ddd6 38px)}.tool-board p{margin:0;border-left:1px solid var(--ink);padding:10px 18px}.crumb{padding:20px max(6vw,28px);display:flex;gap:9px;color:var(--muted);font-size:13px}.crumb em{font-style:normal}.article-lead{padding:60px max(7vw,30px);background:var(--ink);color:#fff}.article-lead h1{font:clamp(38px,5.5vw,76px)/1.15 Georgia,"Songti SC",serif;max-width:1200px;margin:15px 0}.article-lead>p{font-size:20px;color:#cae2df;max-width:840px}.article-lead dl{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#5b706e;margin-top:45px;max-width:1100px}.article-lead dl div{background:var(--ink);padding:18px}.article-lead dt{color:#e9896e;font-size:12px}.article-lead dd{margin:5px 0}.article-columns{display:grid;grid-template-columns:280px minmax(0,760px);gap:6vw;justify-content:center;padding:70px max(6vw,28px)}.article-columns aside{border-top:4px solid var(--rust);align-self:start;position:sticky;top:20px}.article-columns aside b{display:block;margin-top:24px}.article-columns aside p{color:var(--muted);font-size:14px}.article-copy{font-family:Georgia,"Songti SC",serif;font-size:18px;line-height:2}.article-copy h2{font:700 31px/1.3 Georgia,"Songti SC",serif;margin:55px 0 16px;border-bottom:1px solid var(--ink);padding-bottom:12px}.proof{background:#e2ebe5;padding:25px 25px 25px 48px}.steps{list-style:none;padding:0}.steps li{display:grid;grid-template-columns:54px 1fr;gap:16px;border-top:1px solid var(--line);padding:18px 0}.steps b{font-family:Arial;color:var(--rust)}.boundary{border:1px solid var(--rust);padding:22px;margin-top:45px;background:#fff4ef}.plain{max-width:960px;margin:auto;padding:90px 28px;font-size:18px}.plain h1{font:clamp(44px,6vw,82px)/1.1 Georgia,"Songti SC",serif;margin:15px 0 35px}.plain h2{font:32px Georgia,"Songti SC",serif;margin-top:50px}.contact-list div{display:grid;grid-template-columns:100px 1fr;border-top:1px solid var(--line);padding:18px}.contact-list dd{margin:0}.index-page>section{padding:24px 0;border-top:1px solid var(--ink)}.index-page li{padding:5px 0}.related{background:#e4ddd0;border-top:1px solid var(--ink)}footer{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:50px max(6vw,28px);background:#102a2b;color:#d7e5e2}footer>div:nth-child(2){display:flex;gap:22px;justify-content:flex-end;flex-wrap:wrap}footer>small{grid-column:1/-1;border-top:1px solid #526967;padding-top:18px;color:#9fb3af}
@media(max-width:900px){.mast{align-items:flex-start;gap:14px;flex-direction:column}.topnav{overflow-x:auto;max-width:100%;flex-wrap:nowrap;scrollbar-width:none}.topnav::-webkit-scrollbar{display:none}.topnav a{white-space:nowrap}.hero{grid-template-columns:1fr;padding-top:55px}.route-plate{min-height:300px}.gate-grid{display:block}.gate{margin-bottom:14px}.section-hero{grid-template-columns:1fr}.route-code{writing-mode:horizontal-tb}.harbor-board,.rail-board,.island-board,.ocean-board,.tool-board{display:grid;grid-template-columns:1fr 1fr}.harbor-board span,.ocean-board span,.tool-board p{border:0;border-top:1px solid}.article-columns{grid-template-columns:1fr}.article-columns aside{position:static}.note-grid{grid-template-columns:1fr}.note-card:nth-child(odd){border-right:0}.article-lead dl{grid-template-columns:1fr}}
@media(max-width:560px){.hero{padding:44px 20px}.hero h1{font-size:47px}.hero-links{flex-direction:column}.gate-wrap,.latest,.section-body,.related{padding:55px 20px}.note-card{display:block}.note-card .stamp{display:block;margin-bottom:10px}.section-hero{padding:55px 20px}.harbor-board,.rail-board,.island-board,.ocean-board,.tool-board{grid-template-columns:1fr}.article-lead{padding:45px 20px}.article-lead h1{font-size:38px}.article-columns{padding:45px 20px}.crumb{padding:15px 20px;overflow-x:auto;white-space:nowrap}footer{grid-template-columns:1fr;padding:40px 20px}footer>div:nth-child(2){justify-content:flex-start}}

.article-visual{margin:0 0 38px;border:1px solid var(--ink);background:#fff}.article-visual img{display:block;width:100%;height:auto;aspect-ratio:1200/630;object-fit:cover}.article-visual figcaption{padding:10px 14px;border-top:1px solid var(--ink);font-size:13px;color:var(--muted)}
.article-stack{max-width:940px;margin:0 auto;padding:70px max(5vw,24px)}.conclusion-layout>aside{display:grid;grid-template-columns:130px 1fr 130px 1fr;gap:14px;border:1px solid var(--ink);padding:20px;margin-bottom:34px;background:#e1ebe4}.conclusion-layout>aside p{margin:0}.conclusion-layout .article-copy{max-width:760px;margin:auto}
.qa-layout{grid-template-columns:minmax(0,780px) 260px}.qa-layout>aside{border-top-color:var(--sea)}.qa-layout .article-copy p:nth-child(3n+2){background:#fff;padding:15px 18px;border-left:4px solid var(--sea)}
.article-journal{max-width:960px;margin:0 auto;padding:70px max(5vw,24px);display:grid;grid-template-columns:120px minmax(0,760px);gap:24px}.article-journal .article-visual,.article-journal .article-copy{grid-column:2}.journal-margin{grid-column:1;grid-row:2;writing-mode:vertical-rl;color:var(--rust);font-size:13px;border-right:1px solid var(--rust);padding-right:12px}.article-journal>aside{grid-column:2;display:grid;grid-template-columns:110px 1fr 110px 1fr;gap:12px;border-top:1px solid var(--ink);padding-top:20px}.article-journal>aside p{margin:0}
.manual-layout{max-width:1040px;margin:0 auto;padding:70px max(5vw,24px);display:grid;grid-template-columns:260px minmax(0,720px);gap:28px}.manual-layout>header{grid-column:1;background:var(--rust);color:#fff;padding:24px;align-self:start}.manual-layout .article-visual{grid-column:2}.manual-layout .article-copy{grid-column:2}.manual-layout>aside{grid-column:1;grid-row:2/4;border-top:4px solid var(--ink);padding-top:18px}.format-0 p:nth-child(4n),.format-4 p:nth-child(4n+1){border-left:3px solid var(--rust);padding-left:16px}.format-1 p:first-of-type{font-size:22px;color:var(--sea)}.format-3 p{padding-bottom:14px;border-bottom:1px dotted var(--line)}
@media(max-width:900px){.topnav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:3px;width:100%;max-width:none;overflow:visible}.topnav a{text-align:center;padding:7px 2px;font-size:12px;white-space:normal}.conclusion-layout>aside,.article-journal>aside{grid-template-columns:1fr}.article-journal,.manual-layout{display:block}.journal-margin{writing-mode:horizontal-tb;border-right:0;border-bottom:1px solid var(--rust);padding:0 0 10px;margin-bottom:24px}.manual-layout>*{margin-bottom:24px}.qa-layout{grid-template-columns:1fr}}