/* Source stylesheet for the service-led website. */
:root{--ink:#182333;--muted:#606a77;--blue:#3455d7;--navy:#172e58;--line:#dde3ec;--tint:#f3f5f9;--white:#fff;font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}button,a{touch-action:manipulation;-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #4b73e9;outline-offset:5px}img{display:block;width:100%;object-fit:cover}h1,h2,h3,h4,p,figure,dl,dd{margin:0}h1,h2,h3,h4{font-weight:650}p{font-size:16px;line-height:1.9}button{color:inherit}.shell{width:min(1240px,calc(100% - 96px));margin-inline:auto}.skip-link{position:fixed;top:-80px;left:20px;z-index:100;background:white;padding:14px}.skip-link:focus{top:10px}.site-header{position:sticky;top:0;z-index:20;background:#fffffff5;border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.header-inner{min-height:88px;display:flex;justify-content:space-between;align-items:center;gap:30px}.brand{display:flex;flex-direction:column;gap:4px;flex-shrink:0}.brand>span{font-size:25px;letter-spacing:.06em;font-weight:700}.brand b{color:var(--blue);margin-left:8px;font-weight:500}.brand small{font-size:10px;letter-spacing:.08em;font-weight:600}.site-header nav{display:flex;gap:34px;align-items:center}.site-header nav a{font-size:15px;padding:31px 0 27px;border-bottom:3px solid transparent}.site-header nav a:hover,.site-header nav a.active{color:var(--blue);border-color:var(--blue)}.menu-toggle{display:none}.eyebrow{display:flex;align-items:center;gap:10px;font-size:14px;letter-spacing:.08em;font-weight:600;color:var(--blue);margin-bottom:17px}.eyebrow i{width:7px;height:7px;background:var(--blue)}.overview{padding-block:44px 30px}.overview-grid{display:grid;grid-template-columns:1fr 1.12fr;gap:72px;align-items:start}.overview h1{font-size:clamp(34px,3.35vw,48px);line-height:1.35;letter-spacing:-.035em}.overview h1 span{color:var(--blue)}.vision{margin-top:16px;color:var(--muted)}.overview-copy p{color:var(--muted);font-size:15px;line-height:1.95}.overview-copy>p+p{margin-top:12px}.company-details{margin-top:12px;font-size:14px}.company-details summary{display:inline-list-item;cursor:pointer;color:var(--blue);list-style-position:inside}.company-more{padding-top:18px}.company-more p+p{margin-top:15px}.social-links{display:flex;gap:24px;font-size:14px;padding-block:12px}.social-links a{text-decoration:underline;text-underline-offset:4px}.company-facts{display:grid;grid-template-columns:1fr 1fr 1.55fr 1fr;margin-top:29px;padding-top:23px;border-top:1px solid var(--line)}.company-facts>div{padding-inline:28px;border-left:1px solid var(--line)}.company-facts>div:first-child{padding-left:0;border:0}.company-facts dt{font-size:13px;color:var(--muted);margin-bottom:5px}.company-facts dd{font-size:32px;letter-spacing:-.045em;line-height:1.4}.company-facts dd span{font-size:17px;margin-left:5px;letter-spacing:0}.company-facts .location-fact dd{font-size:25px;letter-spacing:.02em;padding-top:6px}.section-tint{background:var(--tint)}.services{padding-block:40px 48px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:32px;margin-bottom:26px}.section-heading .eyebrow{margin-bottom:10px}.section-heading h2{font-size:29px;line-height:1.5;letter-spacing:-.025em}.section-heading>p{font-size:14px;color:var(--muted)}.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:23px}.service-card{background:white;border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:border-color .2s,transform .2s}.service-card:hover{border-color:#9cb2ed;transform:translateY(-3px)}.service-visual{position:relative;aspect-ratio:1.9;overflow:hidden}.service-visual img{height:100%;transition:transform .35s}.service-card:hover img{transform:scale(1.035)}.image-number{position:absolute;top:14px;left:16px;background:#ffffffed;border-radius:2px;padding:6px 10px;font-size:14px;font-weight:600}.service-card-body{padding:24px}.label{font-size:12px;letter-spacing:.075em;color:var(--muted);font-weight:500}.service-card h3{font-size:25px;margin-top:8px}.service-card p{font-size:15px;line-height:1.8;color:var(--muted);margin-block:13px 20px;min-height:54px}.text-link{display:inline-block;font-size:14px;font-weight:600;color:var(--blue);border-bottom:1px solid #a9b8eb;padding-bottom:5px}.text-link:hover{border-color:var(--blue)}.case-section{padding-block:54px 58px}.project-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.project-card{display:block}.project-card>img{aspect-ratio:2;object-position:center;border-radius:5px}.project-card:nth-child(2)>img{object-position:center 46%}.project-card>div{padding:20px 0}.project-card h3{font-size:23px;margin-top:9px}.project-card p{font-size:15px;color:var(--muted);margin-block:8px 14px}.project-card:hover h3{color:var(--blue)}.past-projects{display:grid;grid-template-columns:.95fr 1fr 1fr;gap:25px;border-top:1px solid var(--line);padding-top:26px;margin-top:17px;align-items:center}.past-projects>span{font-size:14px;color:var(--muted)}.past-projects>a{font-size:17px}.past-projects small{display:block;font-size:13px;color:var(--muted);margin-top:7px}.past-projects a:hover{color:var(--blue)}.contact{background:var(--navy);color:white;padding-block:50px}.contact-inner{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.contact .eyebrow{color:#b7c9f1}.contact h2{font-size:33px;line-height:1.5;margin-bottom:14px}.contact p{color:#c2cee2;font-size:14px}.contact-details>span{font-size:14px;color:#c2cee2}.email{display:block;font-size:27px;margin-block:14px 20px;overflow-wrap:anywhere}.actions{display:flex;gap:25px;align-items:center;flex-wrap:wrap}.button{display:inline-flex;justify-content:center;align-items:center;min-height:46px;padding:12px 22px;border:1px solid var(--blue);background:var(--blue);color:white;font-size:14px;border-radius:3px;font-weight:600}.button:hover{background:#2440b3}.button-white{background:white;color:var(--navy);border-color:white}.button-white:hover{background:#e8effc}.button-outline{background:transparent;color:var(--blue)}.button-outline:hover{background:#edf1fc}.copy-email{border:0;border-bottom:1px solid #7f95be;color:white;background:none;font-size:14px;padding:7px 0}.copy-status{min-height:1.8em;margin-top:10px}.contact .small{font-size:13px}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:24px;color:var(--muted);font-size:12px}.breadcrumb{font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;gap:12px;padding-top:30px}.breadcrumb a:hover{color:var(--blue)}.detail-hero{padding-block:38px 42px}.detail-hero h1{font-size:46px;line-height:1.35;letter-spacing:-.035em;max-width:860px}.detail-hero>p{margin-top:20px;max-width:820px;color:var(--muted);font-size:17px}.service-tabs{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.service-tabs a{padding:11px 20px;font-size:14px;border:1px solid var(--line);border-radius:3px}.service-tabs a.active{border-color:var(--blue);background:#edf1fc;color:var(--blue)}.content-section{padding-block:42px}.content-section h2{font-size:27px;line-height:1.5;margin-bottom:22px}.lead-copy{max-width:850px;color:var(--muted)}.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;margin-top:28px}.flow-item{border-top:2px solid #bbc9e6;padding-top:17px}.flow-item>span{font-size:13px;color:var(--blue)}.flow-item h3{font-size:18px;margin-block:12px 10px}.flow-item p{font-size:14px;color:var(--muted);line-height:1.8}.featured-project{display:grid;grid-template-columns:1.15fr 1fr;gap:44px;align-items:center}.featured-project img{aspect-ratio:1.7;border-radius:4px}.featured-project h2{margin-block:12px 15px}.featured-project p{color:var(--muted);margin-bottom:22px}.service-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.service-note{border-top:1px solid var(--line);padding-top:18px}.service-note h3{font-size:19px;margin-bottom:12px}.service-note p{font-size:15px;color:var(--muted)}.video-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:28px;align-items:start}.video-grid figure{background:var(--tint);border:1px solid var(--line);padding:18px;border-radius:4px}.video-grid video{width:100%;height:330px;background:#111b29;object-fit:contain;display:block}.video-grid figcaption{padding-top:15px;font-size:17px;font-weight:600;line-height:1.8}.video-grid figcaption small{display:block;font-size:14px;color:var(--muted);font-weight:400}.video-grid .video-meta{font-size:14px;color:var(--muted);margin-top:14px}.case-layout{display:grid;grid-template-columns:200px 1fr;gap:60px;align-items:start;padding-bottom:52px}.case-toc{position:sticky;top:118px;border-left:1px solid var(--line);display:flex;flex-direction:column;gap:18px;padding-left:22px;font-size:14px;color:var(--muted)}.case-toc a:hover{color:var(--blue)}.case-story{min-width:0}.case-block{padding-block:28px;border-top:1px solid var(--line)}.case-block h2{font-size:25px;margin-bottom:18px}.case-block p{color:var(--muted);margin-top:10px}.case-block ul{padding-left:21px;color:var(--muted);font-size:16px;line-height:2}.case-block .service-notes{gap:25px}.case-banner{margin-bottom:35px;aspect-ratio:2.7;border-radius:4px;object-position:center}.case-facts{display:flex;flex-wrap:wrap;gap:30px;margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}.case-facts dt{font-size:13px;color:var(--muted);margin-bottom:7px}.case-facts dd{font-size:16px}.cover-gallery{display:grid;grid-template-columns:1fr 1fr;gap:20px}.cover-gallery img{aspect-ratio:1.7;border-radius:3px}.cover-gallery figcaption{font-size:14px;color:var(--muted);margin-top:10px}.case-story .video-grid{grid-template-columns:1fr 1fr;gap:18px}.case-story .video-grid video{height:240px}.case-story .video-grid figure{padding:12px}.inline-note{font-size:14px!important;color:var(--muted)}.case-block .actions{margin-top:20px}.video-error{font-size:14px;line-height:1.8}.video-error a{text-decoration:underline}.case-gallery{display:grid;grid-template-columns:1fr 1fr;gap:20px}.case-gallery img{aspect-ratio:1.55}.service-card a,.past-projects a,.site-footer a{min-height:36px}::selection{background:#d6e3ff}
@media(min-width:1650px){.shell{width:min(1380px,calc(100% - 128px))}.overview-grid{gap:110px}}
@media(max-width:1000px){.shell{width:calc(100% - 48px)}.site-header nav{gap:22px}.overview-grid{gap:38px;grid-template-columns:.9fr 1.1fr}.overview h1{font-size:36px}.service-grid{gap:14px}.service-card-body{padding:19px}.service-card p{min-height:81px}.contact-inner{gap:40px}.flow{gap:18px}.featured-project{gap:30px}.case-layout{grid-template-columns:150px 1fr;gap:30px}.case-story .video-grid{grid-template-columns:1fr}.case-story .video-grid video{height:320px}}
@media(max-width:760px){html{scroll-padding-top:90px}.shell{width:calc(100% - 40px)}.header-inner{min-height:76px;flex-wrap:wrap;gap:0}.brand>span{font-size:23px}.brand small{font-size:9px}.menu-toggle{display:block;background:transparent;border:1px solid var(--line);padding:9px 12px;border-radius:3px;font-size:14px}.site-header nav{display:none;flex-direction:column;align-items:stretch;gap:0;width:100%;padding-bottom:14px}.site-header nav.open{display:flex}.site-header nav a{padding:12px 0;border-bottom:1px solid var(--line)}.overview{padding-block:30px}.overview-grid{grid-template-columns:1fr;gap:24px}.overview h1{font-size:36px;line-height:1.4}.vision{margin-top:12px}.eyebrow{margin-bottom:12px}.overview-copy p{font-size:15px}.company-facts{grid-template-columns:1fr 1fr;gap:22px 0;margin-top:24px;padding-top:20px}.company-facts>div{padding-inline:20px}.company-facts>div:nth-child(3){border:0;padding-left:0}.company-facts dt{font-size:12px}.company-facts dd{font-size:29px}.services{padding-block:32px}.section-heading{display:block;margin-bottom:23px}.section-heading h2{font-size:25px}.section-heading>p{margin-top:12px}.service-grid{grid-template-columns:1fr;gap:22px}.service-visual{aspect-ratio:2}.service-card-body{padding:22px}.service-card p{min-height:0;font-size:16px}.service-card h3{font-size:25px}.case-section{padding-block:34px}.project-grid{grid-template-columns:1fr;gap:18px}.project-card h3{font-size:22px}.project-card>div{padding:18px 0}.past-projects{grid-template-columns:1fr;gap:20px}.past-projects>a{border-bottom:1px solid var(--line);padding-bottom:15px}.contact{padding-block:35px}.contact-inner{grid-template-columns:1fr;gap:32px}.contact h2{font-size:30px}.email{font-size:24px}.site-footer{flex-wrap:wrap;line-height:1.7;font-size:12px}.detail-hero{padding-block:26px 32px}.detail-hero h1{font-size:33px}.detail-hero>p{font-size:16px}.breadcrumb{font-size:13px;padding-top:25px;gap:8px}.service-tabs{gap:8px;margin-top:22px}.service-tabs a{padding:9px 13px}.content-section{padding-block:30px}.content-section h2{font-size:25px}.flow{grid-template-columns:1fr;gap:20px}.flow-item{display:grid;grid-template-columns:34px 1fr;column-gap:10px;padding-top:14px}.flow-item>span{padding-top:4px}.flow-item h3{margin:0 0 6px}.flow-item p{grid-column:2}.featured-project{grid-template-columns:1fr;gap:25px}.service-notes{grid-template-columns:1fr;gap:23px}.video-grid{grid-template-columns:1fr;gap:24px}.video-grid video{height:260px}.case-layout{grid-template-columns:1fr;gap:22px;padding-bottom:30px}.case-toc{position:static;flex-direction:row;flex-wrap:wrap;gap:15px;border-left:0;border-bottom:1px solid var(--line);padding:0 0 20px}.case-banner{aspect-ratio:1.65;margin-bottom:25px}.case-block{padding-block:24px}.case-block h2{font-size:23px}.case-facts{gap:18px}.cover-gallery{grid-template-columns:1fr}.case-story .video-grid video{height:260px}.case-gallery{grid-template-columns:1fr}.company-facts .location-fact dd{font-size:24px}.text-link{font-size:15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
.service-card:nth-child(2) .service-visual img{object-position:center 27%}

/* Third revision: official identity, restrained technology accents and handbooks. */
.official-brand{--logo-width:200px;width:var(--logo-width);height:calc(var(--logo-width)*.301431);position:relative;overflow:hidden;display:block}
.official-brand img{position:absolute;width:calc(var(--logo-width)*1.559034);max-width:none;height:auto;left:calc(var(--logo-width)*-.266547);top:calc(var(--logo-width)*-.366727);object-fit:initial}
.overview-title{position:relative;isolation:isolate;padding-bottom:26px}
.overview-title::before{content:"";position:absolute;inset:-22px -25px -5px -25px;z-index:-1;background:linear-gradient(#547ada0b 1px,transparent 1px),linear-gradient(90deg,#547ada0b 1px,transparent 1px),radial-gradient(ellipse at 16% 20%,#c7e4ff42,transparent 68%);background-size:30px 30px,30px 30px,auto;mask-image:linear-gradient(125deg,#000,transparent 84%)}
.overview-title::after{content:"";position:absolute;bottom:0;left:0;width:108px;height:2px;background:linear-gradient(90deg,#3455d7,#52bdcc,transparent)}
.brand-book-link{color:var(--blue);border-bottom:1px solid #a9b8eb;padding-bottom:2px}
.brand-book-link:hover{border-color:var(--blue)}
.service-card{box-shadow:0 0 0 #3455d700;transition:transform .2s,border-color .2s,box-shadow .2s}
.service-card:hover{box-shadow:0 10px 28px #294c9310}
.contact-refined{position:relative;isolation:isolate;overflow:hidden;padding-block:70px;background:radial-gradient(ellipse at 88% 82%,#1d5270 0%,transparent 56%),linear-gradient(115deg,#13253f,#152c51 75%)}
.contact-refined::before{content:"";position:absolute;inset:0 0 auto;height:1px;background:linear-gradient(90deg,transparent,#62c6da80,#7691f9,transparent)}
.contact-grid-art{position:absolute;inset:0 0 0 45%;z-index:-1;background:linear-gradient(#a3d5ff0c 1px,transparent 1px),linear-gradient(90deg,#a3d5ff0c 1px,transparent 1px);background-size:44px 44px;mask-image:linear-gradient(90deg,transparent,#000)}
.contact-refined .contact-inner{grid-template-columns:1.1fr 1fr;gap:100px}
.contact-refined .eyebrow{font-size:12px;letter-spacing:.14em;color:#a3bbdf;margin-bottom:26px}
.contact-refined h2{font-size:clamp(38px,4vw,56px);line-height:1.4;font-weight:600;letter-spacing:.035em;margin-bottom:18px}
.contact-refined h2 span{color:#b8ddef}
.contact-refined .contact-promise{font-size:18px;color:#f0f5ff}
.contact-refined .contact-invitation{font-size:14px;line-height:1.95;margin-top:17px;color:#b9c8de}
.contact-row{border-top:1px solid #adc6ee33;padding-block:21px 23px}
.contact-label{display:block;color:#b9cae4;font-size:12px;letter-spacing:.065em}
.contact-refined .email,.wechat-id{display:block;font-size:clamp(22px,2.2vw,30px);letter-spacing:.015em;font-weight:500;margin-block:10px 12px;line-height:1.5;overflow-wrap:anywhere}
.contact-action{display:inline-block;background:none;color:#e6f0ff;font-size:13px;line-height:1.6;padding:5px 0;border:0;border-bottom:1px solid #8ba8d58c;transition:color .2s,border-color .2s}
.contact-action:hover{color:#9be3f6;border-color:#9be3f6}
.contact-refined .actions{gap:25px}
.contact-refined .copy-status{font-size:13px;margin-top:0;color:#b8ddef}
.poster-gallery{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.zoom-trigger{position:relative;display:block;width:100%;padding:0;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--tint);cursor:zoom-in}
.poster .zoom-trigger img{width:100%;height:auto;object-fit:contain}
.poster-gallery .zoom-trigger img{aspect-ratio:3/4}
.zoom-hint{position:absolute;bottom:12px;right:12px;border:1px solid #ffffff96;background:#fffffff0;color:var(--ink);font-size:12px;padding:7px 11px;border-radius:3px;box-shadow:0 2px 8px #172e5812}
.zoom-trigger:hover .zoom-hint{background:#edf4ff;color:var(--blue)}
.poster figcaption{padding-top:17px}
.poster h3{font-size:18px;line-height:1.6}
.poster figcaption p{font-size:14px;margin-block:7px 13px}
.delivery-list{display:grid;gap:20px}
.delivery-list>div{padding-left:18px;border-left:2px solid #b9c9e9}
.delivery-list p{font-size:15px;margin-top:6px}
.case-results{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:24px;background:var(--tint);border:1px solid var(--line);border-radius:4px}
.case-results dt{font-size:13px;color:var(--muted);margin-bottom:10px}
.case-results dd{font-size:32px;line-height:1.4;color:var(--blue);letter-spacing:-.025em}
.case-results dd span{font-size:15px;margin-left:5px}
.case-wechat{padding-top:8px}
.handbook-hero h1 span{font-size:.55em;font-weight:400;color:var(--muted);margin-left:20px;letter-spacing:.02em}
.handbook{padding-bottom:55px}
.manual-toolbar{display:flex;align-items:center;gap:15px;margin-bottom:20px;padding:18px 0;border-block:1px solid var(--line)}
.manual-toolbar>label{font-size:14px;color:var(--muted);flex-shrink:0}
.manual-toolbar select{font:inherit;font-size:14px;color:var(--ink);border:1px solid var(--line);border-radius:3px;background:white;padding:10px 30px 10px 12px;min-width:250px;max-width:100%;cursor:pointer}
.manual-toolbar select:focus-visible{outline:3px solid #4b73e9;outline-offset:3px}
.manual-controls{display:flex;gap:10px;margin-left:auto}
.manual-controls button{border:1px solid var(--line);background:white;border-radius:3px;padding:10px 17px;font-size:14px;white-space:nowrap;min-height:42px}
.manual-controls button:hover:not(:disabled){border-color:var(--blue);color:var(--blue);background:#f6f8ff}
.manual-controls button:disabled{color:#8c96a4;background:#f5f6f8;cursor:default}
.manual-status{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.manual-stage{background:#fff;border:1px solid var(--line);border-radius:5px;overflow:hidden}
.manual-slide[hidden]{display:none}
.manual-image{border:0;border-bottom:1px solid var(--line);border-radius:0}
.manual-image img{aspect-ratio:16/9;object-fit:contain;height:auto;background:#f5f7fa}
.manual-caption{display:flex;gap:20px;justify-content:space-between;align-items:start;padding:22px 26px}
.manual-caption h2{font-size:20px;line-height:1.5}
.manual-caption p{font-size:14px;color:var(--muted);margin-top:5px}
.manual-caption>span{white-space:nowrap;font-size:13px;color:var(--blue);font-variant-numeric:tabular-nums;padding-top:4px}
.manual-links{display:flex;flex-wrap:wrap;gap:15px 28px;padding:0 26px 24px}
.manual-links:empty{display:none}
.manual-thumbnails{display:flex;gap:12px;overflow-x:auto;padding:20px 3px 15px;scrollbar-width:thin;scrollbar-color:#c0cce2 #f4f6fa}
.manual-thumb{flex:0 0 155px;background:#fff;border:1px solid var(--line);border-radius:3px;padding:5px;text-align:left}
.manual-thumb img{aspect-ratio:16/9;object-fit:contain;background:var(--tint)}
.manual-thumb span{display:block;font-size:12px;padding:9px 3px 4px;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.manual-thumb[aria-current="true"]{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue);color:var(--blue)}
.manual-thumb:hover{border-color:#99b1e7}
.manual-source-note{font-size:12px;line-height:1.8;color:var(--muted);margin-top:14px}
.image-dialog{width:min(1500px,calc(100vw - 48px));max-width:none;max-height:94dvh;margin:auto;border:1px solid #dfe6f1;border-radius:5px;background:#f6f8fc;color:var(--ink);padding:0;overflow:auto;box-shadow:0 20px 100px #0003}
.image-dialog::backdrop{background:#111c35cf;backdrop-filter:blur(5px)}
.image-dialog-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;position:sticky;top:0;z-index:1;background:#fffffff5;border-bottom:1px solid var(--line);padding:12px 20px}
.image-dialog-toolbar a{font-size:14px;color:var(--blue);text-decoration:underline;text-underline-offset:4px}
.close-image{background:white;border:1px solid var(--line);border-radius:3px;padding:8px 13px;font-size:14px}
.image-dialog>img{width:100%;height:auto;max-height:calc(94dvh - 115px);object-fit:contain}
.zoom-caption{padding:14px 20px;font-size:14px;text-align:center;color:var(--muted)}
@media(max-width:1000px){.contact-refined .contact-inner{gap:50px}.manual-toolbar select{min-width:210px}.case-results{padding:18px;gap:16px}.case-results dd{font-size:28px}}
@media(max-width:760px){.official-brand{--logo-width:170px}.overview-title{padding-bottom:20px}.overview-title::before{inset:-10px 0 -5px -12px}.contact-refined{padding-block:42px 25px}.contact-refined .contact-inner{grid-template-columns:1fr;gap:32px}.contact-refined h2{font-size:40px}.contact-refined .eyebrow{margin-bottom:19px}.contact-refined .contact-promise{font-size:17px}.contact-refined .email,.wechat-id{font-size:26px}.contact-grid-art{left:10%}.contact-action{padding-block:9px;font-size:14px}.contact-row{padding-block:19px 20px}.poster-gallery{grid-template-columns:1fr;gap:28px}.case-results{gap:18px 10px;padding:18px 13px}.case-results dd{font-size:25px}.case-results dd span{font-size:13px;margin-left:2px}.case-results dt{font-size:12px}.handbook-hero h1 span{display:block;margin:8px 0 0;font-size:20px}.manual-toolbar{display:grid;grid-template-columns:auto minmax(0,1fr);gap:13px;margin-bottom:15px}.manual-toolbar select{width:100%;min-width:0;font-size:13px}.manual-controls{grid-column:1/-1;width:100%;margin-left:0;justify-content:space-between}.manual-controls button{padding:10px 22px}.manual-caption{padding:17px 15px;gap:15px}.manual-caption h2{font-size:18px}.manual-caption p{font-size:13px}.manual-caption>span{font-size:12px}.manual-links{padding:0 15px 18px;gap:12px}.manual-links .text-link{font-size:14px}.manual-thumb{flex-basis:130px}.manual-thumbnails{gap:10px;padding-block:17px 12px}.manual-source-note{margin-top:12px}.handbook{padding-bottom:34px}.manual-image .zoom-hint{bottom:7px;right:7px;padding:5px 8px;font-size:11px}.image-dialog{width:calc(100vw - 20px)}.image-dialog-toolbar{padding:10px 12px}.zoom-caption{padding:12px;font-size:13px}.social-links{flex-wrap:wrap}}

/* Fourth revision: lighter surfaces and concise editorial hierarchy. */
:root{--ink:#20232a;--muted:#68707e;--blue:#365be0;--tint:#f5f6f8;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif}
.site-header{background:#ffffffdf;border-color:#e6e9ef;backdrop-filter:blur(24px)}
.overview{padding-block:55px 35px}.overview-title::before{inset:-24px -20px -10px -20px;background:radial-gradient(ellipse at 12% 15%,#cbdfff65,transparent 60%),radial-gradient(ellipse at 85% 65%,#dddafa35,transparent 65%);mask-image:linear-gradient(125deg,#000,transparent 95%)}
.overview-title::after{width:150px;height:2px;opacity:.7}.overview h1{font-weight:650;letter-spacing:-.04em}.overview h1 span{background:linear-gradient(105deg,#2860db,#625ae5);background-clip:text;-webkit-background-clip:text;color:transparent}
.company-facts dd{font-variant-numeric:tabular-nums}.section-heading-quiet{display:block;margin-bottom:28px}.section-heading-quiet h2{font-size:16px;color:var(--blue);line-height:1.6;margin-bottom:9px;font-weight:600}.section-heading-quiet>p{font-size:24px;line-height:1.6;letter-spacing:-.015em;color:var(--ink);margin:0;font-weight:550}
.services{padding-block:44px 50px}.service-card{border-color:#e8ebf0;border-radius:16px;box-shadow:0 6px 20px #24395c04}.service-card:hover{border-color:#c3d2f9;box-shadow:0 12px 34px #365be013}.service-card-body{padding:25px}.image-number{border-radius:20px;padding:6px 12px;font-variant-numeric:tabular-nums;backdrop-filter:blur(8px)}.project-card>img{border-radius:13px}.button{border-radius:24px}.service-tabs a{border-radius:22px}.manual-stage{border-radius:13px}.zoom-trigger{border-radius:10px}.manual-image{border-radius:0}.video-grid figure{border-radius:12px}
.contact-quiet{position:relative;isolation:isolate;overflow:hidden;background:#f6f8fc;color:var(--ink);padding-block:72px 40px;border-top:1px solid #e7ecf3}
.contact-halo{position:absolute;z-index:-1;pointer-events:none;top:-145px;left:50%;transform:translateX(-50%);width:950px;height:580px;background:radial-gradient(ellipse at 35% 50%,#c6dcff72,transparent 56%),radial-gradient(ellipse at 70% 45%,#d7d5ff67,transparent 56%);filter:blur(25px)}
.contact-quiet .contact-inner{display:block}.contact-quiet .contact-message{text-align:center}.contact-quiet h2{display:flex;justify-content:center;gap:30px;font-size:clamp(40px,4.7vw,64px);font-weight:650;letter-spacing:-.04em;line-height:1.35;margin-bottom:22px}.contact-quiet h2 span:last-child{background:linear-gradient(105deg,#3662d5,#6b61d6);background-clip:text;-webkit-background-clip:text;color:transparent}
.contact-quiet .contact-promise{font-size:16px;line-height:1.9;color:#5e6879;max-width:680px;margin:auto}.contact-quiet .contact-details{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:42px auto 0;max-width:920px}
.contact-quiet .contact-row{padding:27px 30px 26px;border:1px solid #ffffff;background:#ffffffc9;border-radius:18px;box-shadow:0 8px 32px #22345b05;backdrop-filter:blur(16px)}.contact-quiet .contact-label{font-size:14px;letter-spacing:0;color:#697383}.contact-quiet .email,.contact-quiet .wechat-id{font-size:26px;line-height:1.5;font-weight:550;letter-spacing:-.02em;color:var(--ink);margin:12px 0 19px}.contact-quiet .contact-action{font-size:14px;line-height:1.5;color:var(--blue);border:0;padding:10px 0;min-height:42px}.contact-quiet .contact-action:hover{text-decoration:underline;text-underline-offset:5px}.contact-quiet .email-action{background:var(--blue);border-radius:24px;padding:11px 19px;color:white}.contact-quiet .email-action:hover{background:#2747bf;text-decoration:none}.contact-quiet .actions{gap:23px}.contact-quiet .copy-status{grid-column:1/-1;text-align:center;font-size:13px;color:var(--blue);margin:0;min-height:22px}
.production-work{padding-block:12px 52px}.work-heading{font-size:18px;color:var(--blue);margin-bottom:23px}.production-video-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px 27px}.production-video-grid figure{min-width:0}.production-video-grid video{display:block;width:100%;aspect-ratio:16/9;object-fit:contain;background:#11141c;border-radius:12px;overflow:hidden}.production-video-grid figcaption{display:flex;justify-content:space-between;gap:15px;align-items:baseline;margin-top:17px}.production-video-grid h3{font-size:21px;font-weight:600}.production-video-grid small{font-size:13px;color:var(--muted);white-space:nowrap}.production-video-grid p{font-size:15px;color:var(--muted);margin-top:8px;line-height:1.8}
.impact-results{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}.impact-results>div{background:linear-gradient(145deg,#f4f7fe,#fafbfe);border:1px solid #e6ecf7;border-radius:12px;padding:22px 17px}.impact-results dt{font-size:13px;color:var(--muted);line-height:1.65;min-height:42px}.impact-results dd{font-size:34px;color:var(--blue);letter-spacing:-.035em;line-height:1.5;white-space:nowrap;font-variant-numeric:tabular-nums}.impact-results dd span{font-size:14px;margin-left:3px;letter-spacing:0}.impact-results small{display:block;font-size:12px;color:var(--muted);margin-top:3px;line-height:1.6}.impact-summary{font-size:16px;margin:20px 0!important}.impact-chart-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-block:26px}.impact-chart-grid figure{min-width:0;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;padding:18px}.impact-chart-grid .zoom-trigger{border:0;border-radius:5px}.impact-chart-grid img{height:285px;object-fit:contain;background:#fff}.impact-chart-grid figcaption{font-size:14px;line-height:1.8;color:var(--muted);padding-top:14px}.impact-chart-grid strong{display:block;color:var(--ink);font-size:16px;margin-bottom:4px}.impact-detail{display:flex;gap:16px;border-block:1px solid var(--line);padding-block:18px;align-items:baseline}.impact-detail strong{font-size:29px;color:var(--blue);white-space:nowrap}.impact-detail p{font-size:14px;margin:0}.delivery-list{margin-top:25px}
@media(max-width:1000px){.impact-results{grid-template-columns:repeat(2,1fr)}.impact-results dt{min-height:0}.impact-chart-grid{grid-template-columns:1fr}.impact-chart-grid img{height:auto;max-height:420px}.contact-quiet .email,.contact-quiet .wechat-id{font-size:23px}.contact-quiet .contact-row{padding:24px}}
@media(max-width:760px){.overview{padding-block:34px 30px}.services{padding-block:34px}.section-heading-quiet h2{font-size:15px;margin-bottom:8px}.section-heading-quiet>p{font-size:21px;line-height:1.6;margin-top:0}.service-card-body{padding:22px}.contact-quiet{padding-block:44px 28px}.contact-quiet h2{display:block;font-size:42px;letter-spacing:0;line-height:1.35;margin-bottom:19px}.contact-quiet h2 span{display:block}.contact-quiet h2 span+span{margin-top:5px}.contact-quiet .contact-promise{font-size:15px;max-width:340px}.contact-quiet .contact-details{grid-template-columns:1fr;gap:15px;margin-top:29px}.contact-quiet .contact-row{padding:23px;border-radius:15px}.contact-quiet .email,.contact-quiet .wechat-id{font-size:25px;margin-block:9px 12px}.contact-quiet .copy-status{font-size:12px}.contact-halo{width:650px;height:500px;top:-75px}.production-work{padding-block:8px 34px}.production-video-grid{grid-template-columns:1fr;gap:30px}.production-video-grid figcaption{margin-top:15px}.production-video-grid h3{font-size:20px}.production-video-grid small{font-size:12px}.production-video-grid p{font-size:15px}.impact-results{gap:12px}.impact-results>div{padding:17px 14px}.impact-results dd{font-size:30px}.impact-chart-grid{gap:18px}.impact-chart-grid figure{padding:14px}.impact-chart-grid .zoom-hint{bottom:5px;right:5px}.impact-detail{display:block}.impact-detail p{margin-top:7px}}

/* Founder portrait supplied in the third revision document. */
.founder-profile{display:grid;grid-template-columns:150px minmax(0,1fr);gap:22px;align-items:start;margin-bottom:18px}.founder-photo{width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;object-position:52% center;border-radius:12px}.founder-profile .social-links{gap:18px;flex-wrap:wrap;padding-bottom:0}
@media(max-width:1000px){.founder-profile{grid-template-columns:1fr}.founder-photo{aspect-ratio:3/2;max-width:480px}}