:root{--ink:#142d37;--muted:#61757a;--line:#dce6e5;--paper:#f5f8f6;--teal:#168d83;--lime:#d8f078;--dark:#102c3a;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 'DM Sans','Noto Sans SC',sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(1180px,calc(100% - 48px));margin:auto}.topline{background:var(--dark);color:#c2d0d1;font-size:12px;padding:8px 0}.topline .wrap{display:flex;justify-content:space-between}.topline b{color:#fff;font-weight:500}.header{height:82px;background:#fff;display:flex;align-items:center;border-bottom:1px solid #e8eeeb;position:sticky;top:0;z-index:20}.nav{display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:flex;align-items:center;gap:12px;min-width:230px}.mark{width:42px;height:42px;border-radius:12px;background:var(--teal);color:#fff;display:grid;place-items:center;font-size:16px;font-weight:800;letter-spacing:-2px}.brand strong{display:block;letter-spacing:2px;font-size:17px}.brand small{font-size:10px;color:#829195;letter-spacing:1.3px}.links{display:flex;gap:27px;align-items:center;font-size:13px;color:#41575d}.links a:hover{color:var(--teal)}.navcta,.btn{border:0;background:var(--teal);color:white;padding:12px 20px;border-radius:3px;cursor:pointer;font-weight:600;font-size:13px}.navcta{white-space:nowrap}.hero{background:var(--dark);color:#fff;position:relative;overflow:hidden;padding:94px 0 82px;min-height:550px}.hero:before{content:"";position:absolute;width:600px;height:600px;border:1px solid #496570;border-radius:50%;right:-100px;top:-95px;box-shadow:0 0 0 60px #ffffff08,0 0 0 120px #ffffff05}.hero:after{content:"";position:absolute;right:9%;top:12%;width:340px;height:420px;background:linear-gradient(135deg,#ffffff08,#ffffff00);border-left:1px solid #78909933;transform:skew(-17deg)}.hero .wrap{position:relative;z-index:1}.eyebrow{color:#a9c4c2;letter-spacing:3px;font-size:11px;text-transform:uppercase;display:flex;align-items:center;gap:12px}.eyebrow:before{content:"";width:30px;height:1px;background:var(--lime)}h1{font-size:clamp(42px,5vw,68px);line-height:1.14;letter-spacing:-1px;margin:23px 0 20px;font-weight:600;max-width:660px}.hero p{max-width:510px;color:#b6c7c8;margin:0 0 34px}.hero-actions{display:flex;align-items:center;gap:24px}.btn.lime{background:var(--lime);color:var(--dark)}.hero-note{margin-top:80px;display:flex;gap:46px;color:#c4d0d0;font-size:12px}.hero-note b{display:block;color:#fff;font-size:18px;font-weight:600}.hero-art{position:absolute;z-index:0;right:11%;bottom:52px;width:315px;height:280px;border:1px solid #829ba055;border-radius:46% 46% 6px 6px;background:linear-gradient(180deg,#e6f2ec08,#e6f2ec10)}.hero-art:before{content:"";position:absolute;left:32px;right:32px;top:34px;height:132px;border:1px solid #a4c0bd66;border-bottom:0;border-radius:48% 48% 0 0}.hero-art:after{content:"";position:absolute;left:50%;top:40px;width:1px;height:200px;background:#a4c0bd55;box-shadow:-83px 102px 0 #a4c0bd55,83px 102px 0 #a4c0bd55}.pipe{position:absolute;left:25px;right:25px;bottom:35px;height:70px;border:1px solid #a4c0bd66;border-radius:7px}.dot{position:absolute;width:12px;height:12px;border-radius:50%;background:var(--lime);right:61px;top:104px;box-shadow:0 0 24px var(--lime)}.section{padding:88px 0}.section.white{background:#fff}.section.dark{background:#eaf1ee}.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:34px}.kicker{color:var(--teal);font-size:11px;letter-spacing:2.4px;font-weight:700}.section h2{font-size:34px;line-height:1.25;letter-spacing:-.5px;margin:8px 0 0;font-weight:600}.section-head p{max-width:410px;color:var(--muted);font-size:13px;margin:0}.catgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.cat{padding:22px 20px;background:#fff;border:1px solid var(--line);min-height:125px;transition:.2s;cursor:pointer}.cat:hover{border-color:var(--teal);transform:translateY(-3px)}.cat .num{font-size:10px;color:var(--teal);letter-spacing:2px}.cat strong{display:block;margin-top:13px;font-size:16px}.cat small{display:block;color:var(--muted);margin-top:3px}.productbox{margin-top:42px;border:1px solid var(--line);background:#fff;padding:26px}.filters{display:flex;gap:10px;align-items:center;margin-bottom:22px}.search{position:relative;flex:1}.search input{height:46px;border:1px solid var(--line);width:100%;padding:0 14px 0 42px;outline:0}.search input:focus{border-color:var(--teal)}.search:before{content:"⌕";position:absolute;left:14px;top:7px;font-size:23px;color:#789}.select{height:46px;border:1px solid var(--line);background:#fff;padding:0 14px;color:#41575d}.count{font-size:12px;color:var(--muted);white-space:nowrap}.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:23px}.chip{border:1px solid var(--line);background:#fff;color:#52676b;border-radius:20px;padding:7px 13px;font-size:11px;cursor:pointer}.chip.active,.chip:hover{background:var(--dark);border-color:var(--dark);color:#fff}.products{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}.product{border:1px solid #e3eae8;padding:16px;min-height:158px;display:flex;flex-direction:column;transition:.2s}.product:hover{border-color:#87b8b0;background:#fbfdfb}.product .icon{height:58px;display:flex;align-items:center;color:var(--teal)}.product svg{width:48px;height:42px;stroke:currentColor;fill:none;stroke-width:1.3}.product h3{font-size:13px;margin:8px 0 4px;font-weight:600}.product small{color:#8a999b;font-size:10px;margin-top:auto}.empty{grid-column:1/-1;padding:38px;text-align:center;color:var(--muted)}.moreline{text-align:center;margin-top:23px;color:var(--muted);font-size:12px}.feature{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.feature-visual{min-height:365px;background:#163847;position:relative;overflow:hidden;display:grid;place-items:center}.feature-visual:before,.feature-visual:after{content:"";position:absolute;border:1px solid #a8c8c044;border-radius:50%;width:300px;height:300px}.feature-visual:after{width:430px;height:430px}.tank{position:relative;z-index:2;width:155px;height:220px;border:1px solid #b6d0ceaa;border-radius:50% 50% 20px 20px/12% 12% 8px 8%;background:linear-gradient(100deg,#ffffff05,#ffffff20,#ffffff03)}.tank:before{content:"";position:absolute;top:23px;left:0;right:0;height:1px;background:#bad1d077;box-shadow:0 170px #bad1d077}.tank:after{content:"";position:absolute;bottom:-23px;left:28px;width:1px;height:24px;background:#bad1d099;box-shadow:98px 0 #bad1d099}.feature-copy p{color:var(--muted);font-size:14px}.points{display:grid;grid-template-columns:1fr 1fr;gap:17px;margin:27px 0}.point{border-top:1px solid var(--line);padding-top:12px}.point b{font-size:13px;display:block}.point small{color:var(--muted);font-size:11px}.strip{background:var(--lime);padding:25px 0}.strip .wrap{display:flex;justify-content:space-between;align-items:center}.strip strong{font-size:21px}.strip span{font-size:13px}.strip .btn{background:var(--dark)}.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.tile{background:#fff;padding:26px;border:1px solid var(--line);min-height:190px}.tile .idx{font-size:11px;color:var(--teal);letter-spacing:2px}.tile h3{font-size:18px;margin:20px 0 8px}.tile p{font-size:12px;color:var(--muted);margin:0}.news{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.news article{border-top:2px solid var(--teal);padding:17px;background:#fff}.news time{font-size:10px;color:#849493}.news h3{font-size:15px;margin:12px 0}.news p{font-size:12px;color:var(--muted)}.contact{background:var(--dark);color:#fff;padding:72px 0}.contactrow{display:grid;grid-template-columns:1fr 1fr;gap:60px}.contact p{color:#b1c3c5}.contact-list{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}.contact-list small{color:#91aaae;display:block;font-size:10px;letter-spacing:1px}.contact-list b{font-size:15px}.form{background:#fff;color:var(--ink);padding:25px}.form h3{margin:0 0 16px}.form input,.form textarea{width:100%;border:1px solid var(--line);padding:12px;margin-bottom:10px;outline:0}.form textarea{height:86px;resize:vertical}.form .btn{width:100%}.footer{background:#0b222d;color:#a8b8b9;padding:24px 0;font-size:11px}.footer .wrap{display:flex;justify-content:space-between}.chat-toggle{position:fixed;z-index:40;right:24px;bottom:23px;border:0;border-radius:50px;background:var(--lime);color:var(--dark);height:56px;padding:0 20px;font-weight:700;box-shadow:0 8px 28px #001a2238;cursor:pointer}.chatbox{position:fixed;z-index:39;right:24px;bottom:91px;width:330px;background:#fff;box-shadow:0 15px 55px #09232a32;border:1px solid var(--line);display:none}.chatbox.open{display:block}.chathead{background:var(--dark);color:#fff;padding:16px;display:flex;justify-content:space-between}.chathead small{display:block;color:#acc1c1}.chatbody{padding:16px}.bubble{background:#eef4f1;padding:12px;border-radius:2px;font-size:12px;margin-bottom:12px}.wechat{border:1px dashed #b6c5c0;background:#fafcfb;padding:18px;text-align:center;color:var(--muted);font-size:11px}.qr{width:90px;height:90px;margin:0 auto 8px;border:7px solid #fff;outline:1px solid #cbd8d5;background:repeating-conic-gradient(#16343c 0 25%,#fff 0 50%) 0 0/12px 12px;display:grid;place-items:center;color:#fff;font-size:10px}.wechat strong{display:block;color:var(--ink)}.chat-actions{display:flex;gap:8px;margin-top:12px}.chat-actions a{flex:1;text-align:center;padding:10px;background:var(--teal);color:#fff;font-size:11px}.chat-actions a.secondary{background:#edf3f0;color:var(--ink)}.toast{position:fixed;left:50%;bottom:25px;transform:translateX(-50%);background:var(--dark);color:#fff;padding:12px 18px;font-size:12px;display:none;z-index:55}.toast.show{display:block}.mobile-menu{display:none}
@media(max-width:900px){.links{gap:12px}.links a:nth-child(3),.links a:nth-child(4){display:none}.catgrid,.products{grid-template-columns:repeat(3,1fr)}.hero-art{right:4%;opacity:.55}.feature{gap:32px}.wrap{width:min(100% - 32px,700px)}}@media(max-width:640px){.topline .wrap span:first-child{display:none}.topline .wrap{justify-content:flex-end}.header{height:68px}.brand{min-width:0}.links{display:none}.navcta{padding:10px 12px;font-size:11px}.hero{padding:70px 0 48px;min-height:540px}.hero-art{width:210px;height:200px;right:0;bottom:24px;opacity:.35}.hero-note{gap:18px;margin-top:58px}.hero-note b{font-size:15px}.section{padding:60px 0}.section-head{display:block}.section-head p{margin-top:14px}.section h2{font-size:28px}.catgrid{grid-template-columns:repeat(2,1fr)}.cat{min-height:110px;padding:16px}.productbox{padding:14px;margin-top:24px}.filters{flex-wrap:wrap}.search{flex-basis:100%}.select{flex:1}.count{width:100%}.products{grid-template-columns:repeat(2,1fr);gap:8px}.product{padding:12px;min-height:146px}.feature,.contactrow{grid-template-columns:1fr;gap:28px}.feature-visual{min-height:280px}.tiles,.news{grid-template-columns:1fr}.strip .wrap{display:block}.strip .btn{margin-top:14px}.contact-list{gap:14px}.footer .wrap{display:block}.chat-toggle{right:14px;bottom:14px}.chatbox{right:12px;bottom:78px;width:min(330px,calc(100vw - 24px))}}

/* Hover menu: product families are visible from every content page. */
.nav-product-menu{position:relative;display:flex;align-items:center;height:100%}.series-dropdown{position:absolute;display:none;top:100%;left:50%;transform:translateX(-50%);width:260px;background:#fff;border:1px solid #dce6e5;box-shadow:0 12px 28px #102c3a24;z-index:100;padding:4px 0}.nav-product-menu:hover .series-dropdown,.nav-product-menu:focus-within .series-dropdown{display:block}.series-dropdown a{display:flex!important;justify-content:space-between;align-items:center;padding:11px 18px;border-bottom:1px solid #e0e7e4;color:#35474b;font-size:14px;white-space:nowrap}.series-dropdown a:last-child{border-bottom:0}.series-dropdown a:hover{background:#f1f5f3;color:#1253a5}.series-dropdown span{font-size:19px;color:#809191}.nav-product-menu>a{height:100%;display:flex;align-items:center}.company-intro{font-size:15px;line-height:2;color:#53666a;max-width:980px}.company-intro strong{color:#18343d}.contact-values a{color:inherit}.contact-values a:hover{color:var(--teal)}


/* Service network section */
.service-section{background:linear-gradient(180deg,#eef3f1,#f8faf9)}
.service-tabs{display:flex;gap:10px;margin:0 0 22px;border-bottom:1px solid #d7e2df}
.service-tab{appearance:none;border:0;background:transparent;color:#607277;padding:13px 20px;cursor:pointer;font-weight:600;border-bottom:2px solid transparent;text-align:left}
.service-tab span{display:block;font-size:11px;font-weight:400;color:#829396;margin-top:2px}
.service-tab.active{color:#123645;border-color:#168d83}
.service-board{display:none;grid-template-columns:minmax(0,1.1fr) minmax(340px,.9fr);gap:22px;align-items:stretch}
.service-board.active{display:grid}
.map-card{background:#102c3a;padding:20px 22px 14px;color:#e9f2ef;min-height:390px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden}
.map-caption{display:flex;justify-content:space-between;align-items:center;color:#c5d6d3;font-size:10px;letter-spacing:2px}
.map-caption small{letter-spacing:0;color:#90a9aa;font-size:10px}
.map-svg{width:100%;height:310px;display:block;margin:auto;overflow:visible}
.land-shape{fill:url(#landCN);stroke:#ecf5f0;stroke-width:1.5;opacity:.94}
.land-accent{fill:#168d83;stroke:#d4eee4;stroke-width:1;opacity:.68}
.world-land path{fill:#c9d8d4;stroke:#e8f1ed;stroke-width:1.4;opacity:.9}
.region-dot{fill:#20d3ad;stroke:#f1fff9;stroke-width:1.5;opacity:.82;transition:all .28s;transform-box:fill-box;transform-origin:center}
.region-dot.asia,.region-dot.europe,.region-dot.americas{fill:#9bd0c3}
.service-board[data-highlight="east"] .region-dot.east,.service-board[data-highlight="north"] .region-dot.north,.service-board[data-highlight="south"] .region-dot.south,.service-board[data-highlight="west"] .region-dot.west,.service-board[data-highlight="northwest"] .region-dot.northwest,.service-board[data-highlight="northeast"] .region-dot.northeast,.service-board[data-highlight="asia"] .region-dot.asia,.service-board[data-highlight="europe"] .region-dot.europe,.service-board[data-highlight="americas"] .region-dot.americas{fill:#d8f078;opacity:1;transform:scale(1.8);filter:drop-shadow(0 0 7px #d8f078)}
.map-label,.world-label{fill:#173844;font-size:11px;font-weight:700}
.world-label{fill:#f4fbf8;font-size:12px}
.map-scan{fill:none;stroke:#d8f078;stroke-width:1.5;opacity:.45;animation:scan-pulse 2.5s ease-out infinite}
@keyframes scan-pulse{0%{r:8;opacity:.7}100%{r:25;opacity:0}}
.map-legend{font-size:11px;color:#c6d8d4;display:flex;align-items:center;gap:7px}.map-legend i{width:7px;height:7px;border-radius:50%;background:#d8f078;box-shadow:0 0 9px #d8f078}.map-legend span{margin-left:auto;color:#8ca3a5;font-size:10px}
.service-info{background:#fff;border:1px solid #dce6e5;padding:25px 27px;min-width:0}
.coverage-number{font-size:54px;line-height:1;color:#123645;font-weight:700;letter-spacing:-2px}.coverage-number>span{color:#168d83}.coverage-number small{display:block;font-size:12px;line-height:1.5;letter-spacing:0;color:#61757a;font-weight:500;margin-top:8px}.global-number{font-size:34px;letter-spacing:0;color:#168d83}
.service-lead{color:#52696d;font-size:13px;margin:12px 0 22px;padding-bottom:18px;border-bottom:1px solid #e5ece9}
.service-group{margin-top:17px}.service-group>b{font-size:12px;color:#28444b}.area-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:9px}.area-chip{border:1px solid #e0e9e6;background:#f8faf9;color:#52676b;padding:5px 9px;font-size:11px;cursor:pointer;transition:.18s}.area-chip:hover,.area-chip:focus-visible,.area-chip[aria-pressed="true"]{border-color:#168d83;background:#e8f4ef;color:#123d45;outline:0;box-shadow:0 0 0 2px #168d831a}
.city-details{margin-top:20px;border-top:1px solid #e3ebe8;padding-top:12px;font-size:12px;color:#53676b}.city-details summary{cursor:pointer;font-weight:600;color:#168d83}.city-details>div{padding-top:12px}.city-details p{margin:3px 0 10px;line-height:1.8}.global-note{font-size:10px;color:#879799;margin:18px 0 0}
@media(max-width:850px){.service-board{grid-template-columns:1fr}.map-card{min-height:330px}.map-svg{height:270px}}
@media(max-width:600px){.service-tabs{gap:0}.service-tab{flex:1;padding:11px 8px;font-size:12px}.service-info{padding:20px}.map-card{padding:15px;min-height:280px}.map-svg{height:225px}.coverage-number{font-size:46px}}

/* About page additions */
.about-profile{padding:38px}.about-profile h2{font-size:30px;margin:12px 0 20px}.about-stats{grid-template-columns:repeat(3,1fr)}.about-stats .page-card h3{font-size:22px;margin:10px 0 4px}.about-stats .page-card small,.about-partners small,.network-card>small{font-size:10px;letter-spacing:1.6px;color:#168d83}.about-partners{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.about-partners article,.network-card{padding:24px;background:#f3f7f5;border:1px solid #dce6e5}.about-partners h3{font-size:16px;line-height:1.6;margin:12px 0 4px}.about-partners p,.network-card p{font-size:13px;color:#61757a;line-height:1.85}.about-note{font-size:11px;color:#829194;margin:16px 0 0}.about-industries{grid-template-columns:repeat(3,1fr)}.about-industries .page-card>span{color:#168d83;font-size:11px;letter-spacing:2px}.about-culture{background:#edf3f1}.network-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:16px}.network-card h3{font-size:20px;margin:13px 0}.network-card p{margin:8px 0}.network-card p b{color:#243f46}.about-contact{padding-top:0}.about-contact-inner{display:flex;justify-content:space-between;align-items:center;padding:32px;background:#102c3a;color:white}.about-contact-inner h2{font-size:26px;margin:8px 0}.about-contact-inner p{color:#b7c9c8;font-size:13px;margin:0}.about-contact-inner .navcta{display:inline-block;background:#168d83}.brand .mark{font-family:'DM Sans',sans-serif;letter-spacing:-1px}
/* Interactive dark, dot-matrix 3D globe */
.globe-canvas{display:block;width:100%;height:310px;position:relative;z-index:1;cursor:grab}.globe-canvas:active{cursor:grabbing}.map-card:has(.globe-canvas) .map-svg{display:none}.map-card:has(.globe-canvas){position:relative;background:radial-gradient(ellipse at 50% 48%,#1c2934 0%,#111820 58%,#0b1118 100%)}
@media(max-width:850px){.about-profile{padding:25px}.about-partners,.network-grid{grid-template-columns:1fr}.about-stats{grid-template-columns:repeat(3,1fr)}}
@media(max-width:600px){.about-stats,.about-industries{grid-template-columns:1fr 1fr}.about-contact-inner{display:block;padding:24px}.about-contact-inner .navcta{display:inline-block;margin-top:20px}.about-profile h2{font-size:25px}}
.service-tabs{justify-content:flex-end}
.map-card.has-globe .map-svg{display:none}
.map-card.has-globe{position:relative;background:radial-gradient(ellipse at 50% 48%,#1c2934 0%,#111820 58%,#0b1118 100%)}

/* Changertai visual identity, supplied product photography, and page watermark */
a.brand .mark{width:58px;height:42px;flex:none;background:transparent!important;border-radius:0;display:flex;align-items:center;justify-content:center;padding:0}
a.brand .mark img{display:block;width:100%;height:100%;object-fit:contain}
body:after{content:"";position:fixed;z-index:15;pointer-events:none;left:50%;top:53%;width:min(34vw,340px);height:min(14vw,138px);min-height:72px;transform:translate(-50%,-50%);background:url('assets/changertai-calligraphy.png') center/contain no-repeat;opacity:.085;mix-blend-mode:multiply}
.homehero .hero-photo{position:absolute;z-index:1;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(12,34,48,.96) 0%,rgba(12,34,48,.84) 38%,rgba(12,34,48,.34) 76%,rgba(12,34,48,.18) 100%),url('assets/real-forest-river.jpg') center 52%/cover no-repeat}
.product-mast{position:relative;isolation:isolate;overflow:hidden;background:#f1f5f9;color:#0f172a}
.product-mast .wrap{position:relative;z-index:1}.product-mast .crumb,.product-mast h1,.product-mast p{color:#0f172a}.product-mast p{max-width:650px}.product-mast-image{position:absolute;right:max(calc((100vw - 1180px)/2),24px);top:6px;height:calc(100% - 12px);width:350px;object-fit:contain;mix-blend-mode:multiply}
.about-showcase{background:#f0f5f3}.about-showcase-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:13px}.equipment-card{overflow:hidden;background:#fff;border:1px solid #dce6e5;transition:transform .2s,border-color .2s}.equipment-card:hover{transform:translateY(-3px);border-color:#68aaa0}.equipment-card img{display:block;width:100%;height:185px;object-fit:contain;padding:10px;background:linear-gradient(135deg,#f7f9f8,#edf2f0)}.equipment-card div{padding:14px 15px 16px}.equipment-card small{color:#168d83;font-size:9px;letter-spacing:1.3px}.equipment-card h3{font-size:14px;margin:6px 0 0}.equipment-card p{font-size:11px;color:#728286;margin:4px 0 0;line-height:1.6}
@media(max-width:850px){.about-showcase-grid{grid-template-columns:repeat(3,1fr)}body:after{width:min(55vw,300px);height:120px}}
@media(max-width:600px){a.brand .mark{width:48px;height:36px}.homehero .hero-photo{background-position:58% center;background-image:linear-gradient(90deg,rgba(12,34,48,.94),rgba(12,34,48,.64)),url('assets/real-forest-river.jpg')}.product-mast-image{right:4px;opacity:.35;width:58%;}.about-showcase-grid{grid-template-columns:repeat(2,1fr);gap:9px}.equipment-card img{height:145px}body:after{width:64vw;height:110px;opacity:.065}}