:root{--navy:#15314a;--navy2:#1c4057;--green:#2b756b;--green-dark:#1e5a52;--sand:#f4eedc;--cream:#faf9f5;--ink:#243544;--muted:#66747c;--line:#dce5df;--pale:#edf4ef;--white:#fff;font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--cream);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px}a{color:inherit}button{font:inherit}.container{width:min(1180px,calc(100% - 48px));margin:auto}.narrow{width:min(860px,calc(100% - 48px))}.skip{position:absolute;top:-100px;left:12px;z-index:50;background:var(--navy);color:white;padding:10px}.skip:focus{top:12px}.header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:10}.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:86px;gap:24px}.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;color:var(--navy);white-space:nowrap}.mark{display:grid;place-items:center;background:var(--navy);color:var(--sand);border-radius:12px;width:43px;height:43px}.mark svg{width:34px}.brand strong{display:block;font-size:19px;letter-spacing:.07em}.brand small{display:block;font-size:10px;letter-spacing:.23em;color:#758784;margin-top:2px}.nav{display:flex;align-items:center;gap:35px}.nav a{text-decoration:none;font-size:14px;color:#53656d;padding:32px 0;position:relative}.nav a:hover,.nav a[aria-current]{color:var(--green)}.nav a[aria-current]:after{content:"";position:absolute;left:0;right:0;bottom:19px;height:2px;background:var(--green)}.menu-button,.mobile-nav{display:none}.hero{background:linear-gradient(115deg,#f7f2e5 0%,#f4eedc 50%,#eaf0e8 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@media(max-width:700px){.container,.narrow{width:min(100% - 36px,520px)}.header-inner{min-height:68px}.brand strong{font-size:17px}.mark{width:39px;height:39px}.nav{display:none}.menu-button{display:grid;gap:4px;background:white;border:1px solid var(--line);padding:11px;border-radius:4px;cursor:pointer}.menu-button span{display:block;width:20px;height:2px;background:var(--navy)}.mobile-nav:not([hidden]){display:grid;border-top:1px solid var(--line);padding:8px 18px 15px;background:white}.mobile-nav a{text-decoration:none;padding:11px 5px;border-bottom:1px solid var(--line);font-size:14px}.hero-grid{grid-template-columns:1fr;gap:0;padding-bottom:20px}.hero-copy{padding:57px 0 36px}.hero h1{font-size:clamp(39px,9.4vw,57px)}.lead{font-size:16px;line-height:1.75}.hero-visual{height:295px}.map-label{top:18px;left:19px}.pin-start{left:15px;bottom:68px}.pin-end{right:17px;top:71px}.map-disclaimer{right:13px;bottom:12px}.trust-grid{grid-template-columns:1fr}.trust-grid>div,.trust-grid>div:first-child{padding:16px 0;border-right:0;border-bottom:1px solid #ffffff25}.section{padding:66px 0}.section-heading{display:block}.section-heading h2,.method-grid h2,.closing h2{font-size:32px}.section-side-link{display:inline-block;margin-top:18px}.routes-grid,.method-grid,.detail-grid,.page-hero-grid{grid-template-columns:1fr}.route-art{height:190px}.route-body{padding:25px}.route-aside{padding:24px}.method-band{padding:62px 0}.method-grid{gap:32px}.source-grid{grid-template-columns:1fr}.source-card:last-child{grid-column:auto}.source-card{min-height:210px}.checked{display:block;margin-top:15px}.closing-inner{display:block}.closing .button{margin-top:15px}.footer-top,.footer-bottom{display:block}.footer-links{margin-top:25px;flex-wrap:wrap}.footer-bottom span{display:block;margin:9px 0}.page-hero{padding:24px 0 50px}.breadcrumb{margin-bottom:36px}.page-hero h1{font-size:40px}.mini-map{height:170px}.mini-map-cities{margin-top:95px}.detail-grid{padding-top:45px;padding-bottom:65px}.detail-aside{position:static;grid-row:1}.detail-section h2{font-size:25px}.fact-table>div{display:grid;gap:6px}.fact-table span{text-align:left}.simple-hero{padding:65px 0}.simple-hero h1{font-size:39px}.prose{padding:55px 0 80px}.method-cards{grid-template-columns:1fr}.update-card{display:block}.update-card time{display:block;margin-bottom:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button,.source-card{transition:none}}