*{box-sizing:border-box}
:root{--bg:#000;--deep:#0a0a0a;--surface:#121212;--surface2:#1c1c1c;--hover:#262626;--title:#fff;--text:#e6e6e6;--muted:#a8a8a8;--soft:#7a7a7a;--orange:#ff9f00;--orange2:#ffb84d;--orange3:#e08a00;--border:rgba(255,159,0,.18);--border2:rgba(255,184,77,.45);--shadow:0 16px 42px rgba(0,0,0,.55);--glow:0 14px 36px rgba(255,159,0,.16);--max:1320px;--header:74px}
html{scroll-behavior:smooth;background:#000}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.78 Arial,"Microsoft YaHei","PingFang SC",sans-serif;overflow-x:hidden}body.layer-open{overflow:hidden}
a{color:inherit;text-decoration:none}button,input{font:inherit}button{color:inherit}img{display:block;max-width:100%;height:auto}::selection{background:var(--orange);color:#111}
.skip-link{position:fixed;left:14px;top:-100px;z-index:9999;background:var(--orange);color:#111;padding:9px 14px;border-radius:4px;font-weight:800}.skip-link:focus{top:12px}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-header{position:sticky;top:0;z-index:1000;height:var(--header);background:rgba(0,0,0,.96);border-bottom:1px solid var(--border);backdrop-filter:blur(12px)}
.header-inner{width:min(var(--max),calc(100% - 28px));height:100%;margin:auto;display:flex;align-items:center;gap:14px}.desktop-header{display:flex}.mobile-header{display:none}
.icon-button{width:46px;height:46px;min-width:46px;border:1px solid var(--border);background:var(--deep);border-radius:6px;display:grid;place-items:center;cursor:pointer}.icon-button:hover{background:var(--hover);border-color:var(--border2)}.icon-button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--orange2);outline-offset:3px}
.menu-trigger{gap:4px;padding:12px}.menu-trigger span{display:block;width:19px;height:2px;background:#fff}.icon-button svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2}
.brand-lockup{display:flex;align-items:center;gap:10px;min-width:max-content}.brand-logo-wrap{min-width:44px;min-height:34px;display:grid;place-items:center}.brand-logo{max-width:116px;max-height:42px;object-fit:contain}.brand-text{display:grid;line-height:1.1}.brand-text strong{font-size:20px;letter-spacing:.08em}.brand-text small{font-size:10px;color:var(--orange);letter-spacing:.2em;margin-top:5px}
.primary-nav{height:100%;display:flex;align-items:stretch;justify-content:center;flex:1;min-width:0}.primary-nav a{display:flex;align-items:center;padding:0 13px;color:var(--muted);font-size:14px;white-space:nowrap;position:relative}.primary-nav a:hover,.primary-nav a.is-current{color:#fff}.primary-nav a.is-current:after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;background:var(--orange)}
.app-button,.btn-primary{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:5px;background:linear-gradient(135deg,#ffb84d 0%,#ff9f00 55%,#e08a00 100%);color:#111;font-weight:800;white-space:nowrap;box-shadow:var(--glow)}.app-button:hover,.btn-primary:hover{filter:brightness(1.06)}
.site-main{min-height:60vh}.container{width:min(var(--max),calc(100% - 28px));margin:auto}.narrow{width:min(920px,calc(100% - 28px));margin:auto}
.section{padding:76px 0;border-top:1px solid rgba(255,255,255,.055)}.section-dark{background:var(--deep)}.section-surface{background:var(--surface)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.18em}.eyebrow:before{content:"";width:26px;height:1px;background:var(--orange)}
h1,h2,h3{color:#fff;line-height:1.25;margin:0 0 14px}h1{font-size:clamp(36px,6vw,76px);letter-spacing:-.035em}h2{font-size:clamp(28px,3.2vw,46px);letter-spacing:-.025em}h3{font-size:clamp(19px,2vw,27px)}p{margin:0 0 16px}.lead{font-size:clamp(18px,2vw,22px);color:var(--muted);max-width:840px}.muted{color:var(--muted)}.small{font-size:13px;color:var(--soft)}
.text-link{color:var(--orange2);font-weight:700;display:inline-flex;align-items:center;gap:7px;min-height:44px}.text-link:after{content:"→"}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border:1px solid var(--border2);border-radius:5px;white-space:nowrap}.btn-secondary:hover{background:var(--hover)}
.page-hero{padding:74px 0 58px;overflow:hidden;background:radial-gradient(circle at 82% 20%,rgba(255,159,0,.16),transparent 28%),linear-gradient(180deg,#0b0b0b,#000)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);gap:48px;align-items:end}.hero-summary{max-width:780px;color:var(--muted);font-size:18px}.hero-meta{border-left:1px solid var(--border2);padding-left:24px;color:var(--muted)}.hero-meta strong{display:block;color:#fff;margin-bottom:8px}.hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.tag,.badge{display:inline-flex;align-items:center;padding:4px 9px;border:1px solid var(--border);color:var(--orange2);font-size:12px;border-radius:999px}
.home-poster{min-height:clamp(340px,55vw,720px);background:radial-gradient(circle at 70% 25%,rgba(255,159,0,.2),transparent 28%),linear-gradient(135deg,#171717,#030303);display:grid;place-items:center;overflow:hidden}.home-poster img{width:100%;height:auto;object-fit:contain}.home-info-bar{border-top:1px solid var(--orange);border-bottom:1px solid var(--border);background:#050505}.home-info-inner{padding:22px 0;display:grid;grid-template-columns:1fr 1.5fr auto;gap:28px;align-items:center}.home-brand-title{display:flex;gap:12px;align-items:baseline}.home-brand-title strong{font-size:24px}.home-brand-title span{font-size:12px;color:var(--orange);letter-spacing:.15em}
.editorial-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(300px,.8fr);gap:26px}.focus-card{padding:34px;min-height:420px;background:linear-gradient(145deg,#171717,#0d0d0d);border:1px solid var(--border);border-radius:8px;display:flex;flex-direction:column;justify-content:flex-end}.focus-card .number{font-size:72px;line-height:1;color:rgba(255,159,0,.18);font-weight:900}.news-stack{display:grid;gap:12px}.news-item{padding:20px;background:var(--surface);border:1px solid rgba(255,255,255,.07);border-radius:6px}.news-item:hover{border-color:var(--border2)}.news-item p{font-size:14px;color:var(--muted)}
.mosaic{display:grid;grid-template-columns:1.2fr .8fr .9fr;grid-auto-rows:minmax(170px,auto);gap:14px}.mosaic article,.info-card,.note{background:var(--surface);border:1px solid rgba(255,255,255,.07);padding:24px;border-radius:6px}.mosaic article:nth-child(1){grid-row:span 2;background:radial-gradient(circle at 80% 10%,rgba(255,159,0,.17),transparent 30%),var(--surface)}.mosaic article:nth-child(4){grid-column:span 2}.mosaic p,.info-card p,.note p{color:var(--muted)}
.list-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.info-card .index{display:block;color:var(--orange);font-size:12px;margin-bottom:28px}
.split-feature{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:stretch}.feature-copy{padding:40px;background:var(--surface);border:1px solid rgba(255,255,255,.07);border-radius:7px}.feature-visual{min-height:380px;background:radial-gradient(circle at 50% 35%,rgba(255,159,0,.18),transparent 30%),linear-gradient(145deg,#151515,#030303);border-radius:7px;overflow:hidden;display:grid;place-items:center}.feature-visual img{width:100%;height:100%;object-fit:contain}
.check-list{display:grid;gap:10px;margin:22px 0}.check-list div{display:grid;grid-template-columns:32px 1fr;gap:10px;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.06)}.check-list b{width:26px;height:26px;border:1px solid var(--border2);color:var(--orange);display:grid;place-items:center;border-radius:50%;font-size:12px}
.note-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.callout{padding:28px;border:1px solid var(--border2);background:linear-gradient(145deg,rgba(255,159,0,.08),transparent)}
.chapter-list{counter-reset:chapter;display:grid;gap:18px}.chapter{display:grid;grid-template-columns:80px 1fr;gap:22px;padding:28px 0;border-bottom:1px solid rgba(255,255,255,.08)}.chapter:before{counter-increment:chapter;content:counter(chapter,decimal-leading-zero);color:var(--orange);font-size:38px;font-weight:900;line-height:1}.chapter p{color:var(--muted)}
.route-log{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}.route-log article{background:var(--surface);border:1px solid rgba(255,255,255,.07);padding:24px}.route-log article:nth-child(1){grid-column:span 7}.route-log article:nth-child(2){grid-column:span 5}.route-log article:nth-child(3){grid-column:span 4}.route-log article:nth-child(4){grid-column:span 8}.route-log article:nth-child(5),.route-log article:nth-child(6){grid-column:span 6}.route-log p{color:var(--muted)}
.interest-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:rgba(255,159,0,.14);border:1px solid var(--border)}.interest-wall article{background:var(--deep);padding:28px;min-height:240px}.interest-wall p{color:var(--muted)}
.story-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:32px}.story-main{padding:36px;background:var(--surface);border-left:3px solid var(--orange)}.story-side{display:grid;gap:12px}.story-side article{padding:20px;background:var(--deep);border:1px solid rgba(255,255,255,.06)}
.timeline{display:grid;border-left:1px solid var(--border2);margin-left:12px}.timeline article{position:relative;padding:0 0 34px 34px}.timeline article:before{content:"";position:absolute;left:-6px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--orange)}.timeline p{color:var(--muted)}
.photo-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-auto-rows:220px;gap:12px}.photo-slot{background:linear-gradient(145deg,#282828,#050505);border:1px solid rgba(255,255,255,.06);overflow:hidden;position:relative}.photo-slot.wide{grid-row:span 2}.photo-slot img{width:100%;height:100%;object-fit:cover}.photo-caption{position:absolute;left:14px;bottom:12px;font-size:13px;color:#fff;text-shadow:0 2px 10px #000}
.faq-list{display:grid;gap:10px}.faq-list details{background:var(--surface);border:1px solid rgba(255,255,255,.07);border-radius:6px;padding:0 20px}.faq-list summary{cursor:pointer;color:#fff;font-weight:700;padding:18px 0;list-style:none;min-height:58px}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"＋";float:right;color:var(--orange)}.faq-list details[open] summary:after{content:"－"}.faq-list details p{padding:0 0 20px;color:var(--muted)}
.safety-panel{display:grid;grid-template-columns:.75fr 1.25fr;gap:26px}.safety-index{position:sticky;top:calc(var(--header) + 20px);align-self:start;background:var(--surface);border:1px solid var(--border);padding:24px}.safety-index a{display:block;padding:10px 0;color:var(--muted);border-bottom:1px solid rgba(255,255,255,.06)}.safety-index a:hover{color:var(--orange2)}.safety-content{display:grid;gap:18px}.safety-content article{padding:28px;background:var(--surface);border-left:2px solid var(--orange)}
.topic-strip{display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.topic-strip a{padding:22px 16px;border-right:1px solid var(--border);min-height:112px;display:flex;align-items:flex-end}.topic-strip a:last-child{border-right:0}.topic-strip a:hover{background:var(--surface)}
.brand-statement{padding:70px 0}.brand-statement blockquote{margin:0;font-size:clamp(28px,4vw,54px);line-height:1.35;max-width:1100px}.brand-statement blockquote span{color:var(--orange)}
.site-footer{background:#050505;border-top:1px solid var(--border);padding-bottom:24px}.footer-accent{height:2px;background:linear-gradient(90deg,var(--orange),transparent 65%)}.footer-inner{width:min(var(--max),calc(100% - 28px));margin:auto;padding-top:54px}.footer-brand{display:grid;grid-template-columns:300px 1fr;gap:40px;padding-bottom:36px}.footer-brand p{color:var(--muted);max-width:720px}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:32px 0;border-top:1px solid rgba(255,255,255,.07)}.footer-groups h2{font-size:14px;color:var(--orange)}.footer-groups a{display:block;color:var(--muted);padding:5px 0}.footer-groups a:hover{color:#fff}.footer-note{color:var(--soft);font-size:13px;border-top:1px solid rgba(255,255,255,.07);padding-top:24px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;color:var(--soft);font-size:12px;padding-top:16px}.footer-bottom span:last-child{display:flex;gap:16px}
.site-overlay{position:fixed;inset:0;z-index:1200;background:rgba(0,0,0,.72);opacity:0;visibility:hidden;pointer-events:none;transition:.22s}.site-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}
.site-drawer{position:fixed;z-index:1300;left:0;top:0;bottom:0;width:min(460px,88vw);background:#080808;border-right:1px solid var(--border);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:.25s;box-shadow:var(--shadow);display:flex;flex-direction:column}.site-drawer.is-open{transform:none;visibility:visible;pointer-events:auto}.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid rgba(255,255,255,.07)}.drawer-close,.search-close{font-size:27px}.drawer-scroll{overflow:auto;padding:10px 18px 30px}.drawer-group{padding:18px 0;border-bottom:1px solid rgba(255,255,255,.07)}.drawer-group h2{font-size:13px;color:var(--orange)}.drawer-group a{display:block;padding:10px 0}.drawer-group strong,.drawer-group span{display:block}.drawer-group span{color:var(--soft);font-size:12px}
.search-panel{position:fixed;z-index:1300;inset:0;display:grid;place-items:start center;padding-top:9vh;visibility:hidden;pointer-events:none}.search-panel.is-open{visibility:visible;pointer-events:auto}.search-dialog{width:min(760px,calc(100% - 28px));max-height:80vh;overflow:auto;background:#0a0a0a;border:1px solid var(--border2);box-shadow:var(--shadow);padding:28px;border-radius:8px;transform:translateY(-12px);opacity:0;transition:.2s}.search-panel.is-open .search-dialog{transform:none;opacity:1}.search-heading{display:flex;justify-content:space-between;gap:16px}.search-box{display:block;margin:18px 0}.search-box input{width:100%;height:54px;background:var(--surface);color:#fff;border:1px solid var(--border);padding:0 16px;border-radius:5px}.search-results{display:grid;grid-template-columns:1fr 1fr;gap:8px}.search-results a{padding:15px;background:var(--surface);border:1px solid rgba(255,255,255,.06)}.search-results strong,.search-results span{display:block}.search-results span{font-size:12px;color:var(--soft)}.search-results a[hidden]{display:none}.mobile-bottom-nav{display:none}
@media(max-width:1080px){.primary-nav a{padding:0 8px;font-size:13px}.brand-text{display:none}.editorial-grid,.story-layout{grid-template-columns:1fr}.list-grid{grid-template-columns:repeat(2,1fr)}.mosaic{grid-template-columns:1fr 1fr}.mosaic article:nth-child(1){grid-row:auto}.mosaic article:nth-child(4){grid-column:auto}.interest-wall{grid-template-columns:repeat(2,1fr)}.topic-strip{grid-template-columns:repeat(3,1fr)}}
@media(max-width:780px){:root{--header:64px}body{padding-bottom:calc(70px + env(safe-area-inset-bottom))}.desktop-header{display:none}.mobile-header{display:flex;justify-content:space-between}.mobile-header .icon-button{width:44px;height:44px;min-width:44px}.mobile-brand{display:flex;align-items:center;gap:8px;font-weight:900}.mobile-brand .brand-logo{max-width:118px;max-height:38px}.section{padding:56px 0}.page-hero{padding:52px 0 40px}.hero-grid,.home-info-inner,.split-feature,.safety-panel{grid-template-columns:1fr}.editorial-grid,.list-grid,.note-grid{grid-template-columns:1fr}.mosaic{grid-template-columns:1fr}.mosaic article:nth-child(4){grid-column:auto}.interest-wall{grid-template-columns:1fr}.route-log{grid-template-columns:1fr}.route-log article:nth-child(n){grid-column:auto}.safety-index{position:static}.chapter{grid-template-columns:58px 1fr}.photo-grid{grid-template-columns:1fr 1fr;grid-auto-rows:180px}.photo-slot.wide{grid-column:span 2;grid-row:auto;min-height:240px}.footer-brand{grid-template-columns:1fr}.footer-groups{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column}.search-results{grid-template-columns:1fr}.mobile-bottom-nav{position:fixed;z-index:1100;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,1fr);padding-bottom:env(safe-area-inset-bottom);background:rgba(5,5,5,.98);border-top:1px solid var(--border)}.mobile-bottom-nav a{min-height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:var(--muted);font-size:11px}.mobile-bottom-nav a span{font-size:17px}.mobile-bottom-nav a.is-current{color:var(--orange2);background:rgba(255,159,0,.06)}}
@media(max-width:480px){.photo-grid{grid-template-columns:1fr}.photo-slot.wide{grid-column:auto}.footer-groups{grid-template-columns:1fr}.topic-strip{grid-template-columns:1fr}h1{font-size:38px}.focus-card,.feature-copy{padding:24px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}