:root{--bg:#0d0e12;--surface:#15161c;--line:#2b2c34;--text:#f3ebdd;--muted:#a3a4ad;--lime:#f3ebdd;--purple:#b697f6;font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color-scheme:dark}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:105px}body{margin:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.7}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}button{color:inherit}img{display:block;max-width:100%}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid 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20px;display:grid;grid-template-columns:35px 1fr;align-items:center;column-gap:14px}.flow h3{font-size:18px;margin:0}.flow p{grid-column:2;margin-top:4px;font-size:13px}.flow article:not(:last-child):after{top:24px;content:'↓'}.loop-line{justify-content:space-between;gap:10px;font-size:11px}.cooperation{grid-template-columns:1fr;gap:20px;padding:27px 22px}.coop-intro h2{font-size:30px}.coop-intro p{font-size:14px}.coop-list>div{padding:22px 0}.coop-list p{font-size:13px}.coop-num{font-size:45px;min-width:65px}.coop-symbol{width:65px}.about{grid-template-columns:1fr;gap:0;padding-bottom:65px}.about h2{font-size:29px}.about-copy>p{font-size:15px}.about-points span{font-size:11px}.final-cta{margin:0 22px 50px;padding:32px 25px}.final-cta h2{font-size:32px;position:relative;z-index:1}.final-cta h2>span{font-size:100px;right:-18px;top:78px;opacity:.16;z-index:-1}.final-cta>p{font-size:12px}.footer-top{align-items:flex-start;flex-wrap:wrap;gap:28px}.footer-top>p{display:none}.footer-top>div{width:100%;font-size:13px}.footer-bottom{flex-wrap:wrap;font-size:10px;gap:10px}.footer-bottom span:nth-child(2){display:none}.dialog-body{padding:27px 22px}.dialog-body h2{font-size:27px}.form-row,.detail-facts{grid-template-columns:1fr;gap:0}#case-detail-image{height:210px}.detail-facts>div+div{margin-top:18px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
/* Fade the artwork into the page while keeping the sculpture luminous. */
.hero-art{-webkit-mask-image:radial-gradient(ellipse 64% 64% at 51% 50%,#000 55%,transparent 90%);mask-image:radial-gradient(ellipse 64% 64% at 51% 50%,#000 55%,transparent 90%)}
/* V2: 达广联投 — native content, evidence and demand validation */
.brand-logo{width:62px;height:49px;flex-shrink:0}.brand:hover .brand-logo{transform:rotate(-4deg);transition:.25s}.hero-bottom{justify-content:flex-end}.platform-inner{justify-content:center;gap:100px}.platform-inner strong{font-size:25px}.flow{grid-template-columns:repeat(3,1fr)}.flow article{padding:30px}.flow h3{font-size:21px;margin:25px 0 15px}.flow p{font-size:15px;line-height:1.9;min-height:88px}.step-output{display:block;font-size:12px;color:var(--lime);border-top:1px solid var(--line);margin-top:20px;padding-top:16px}.case-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px 18px}.case-placeholder{aspect-ratio:3/4;border:1px dashed #41464f;border-radius:12px;position:relative;background:linear-gradient(140deg,#20251b,#12151b);display:grid;place-items:center}.case-placeholder.beauty{background:linear-gradient(140deg,#302538,#15131c)}.case-placeholder.health{background:linear-gradient(140deg,#17302c,#111c1c)}.case-placeholder.tech{background:linear-gradient(140deg,#1c2940,#131723)}.case-placeholder.travel{background:linear-gradient(140deg,#343021,#1c1913)}.placeholder-center{display:flex;flex-direction:column;align-items:center;gap:16px;font-size:14px;color:#b3b5bc}.placeholder-center>span{font-size:38px;color:#7e858e}.case-placeholder .image-tag{font-size:12px;left:14px;top:14px;border:0;padding:0;background:none}.case-meta h3{font-size:16px}.case-meta{gap:8px}.case-index{white-space:nowrap;font-size:10px}.results-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.result-card{padding:0;text-align:left;border:1px solid var(--line);border-radius:14px;background:var(--surface);overflow:hidden;transition:transform .2s,border-color .2s}.result-card:hover{transform:translateY(-4px);border-color:var(--lime)}.result-image{height:180px;background:#1d2027;position:relative;display:flex;align-items:center;justify-content:center;flex-direction:column;color:#858c99;border-bottom:1px dashed #444952}.result-image>span:not(.result-image-label){font-size:42px}.result-image small{font-size:12px}.result-image-label{position:absolute;top:16px;left:20px;font-size:11px;letter-spacing:1px}.result-image img{width:100%;height:100%;object-fit:cover}.result-content{padding:26px}.result-content>p:first-child{font-size:20px}.result-metric{font-size:58px;line-height:1.2;color:var(--lime);margin:20px 0 10px;letter-spacing:-2px}.result-metric>span{display:inline-block;font-size:14px;color:#d1d3db;letter-spacing:0;margin-left:17px}.result-extra{font-size:14px;color:var(--muted);min-height:24px}.result-link{display:flex;justify-content:space-between;font-size:14px;border-top:1px solid var(--line);margin-top:22px;padding-top:16px}.result-link>span{color:var(--lime)}.empty-media{display:flex;align-items:center;justify-content:center;flex-direction:column;min-height:260px;border:1px dashed #454954;background:#101218;border-radius:10px;text-align:center;padding:30px;gap:15px;margin:25px 0}.empty-media>span{font-size:44px;color:var(--purple)}.empty-media p{font-size:15px;color:var(--muted);max-width:500px}.empty-media[hidden],[hidden]{display:none!important}#result-dialog{max-width:1060px}#document-frame{width:100%;height:60vh;border:1px solid var(--line);border-radius:8px;background:#fff;margin-top:20px}#document-link{margin-top:10px}#cases .section-head h2,#growth .section-head h2{line-height:1.5;font-size:clamp(28px,3vw,40px)}
@media(max-width:1000px){.case-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.flow{grid-template-columns:repeat(2,minmax(0,1fr))}.flow p{min-height:86px}}
@media(max-width:760px){.brand-logo{width:45px;height:38px}.brand{gap:5px}.hero h1{font-size:clamp(38px,10vw,53px)}.platform-inner{gap:44px;min-height:80px;flex-wrap:nowrap}.platform-inner strong{font-size:21px}.case-grid{gap:22px 12px}.case-placeholder{aspect-ratio:3/4}.case-placeholder .image-tag{font-size:10px}.placeholder-center{font-size:12px}.case-placeholder .case-open{width:32px;height:32px;font-size:18px;right:10px;bottom:10px}.case-meta{display:block}.case-meta h3{font-size:14px}.case-index{display:none}.results-grid{grid-template-columns:1fr}.result-content{padding:22px}.result-image{height:160px}.flow{grid-template-columns:1fr}.flow article{display:block;padding:26px}.flow h3{margin:16px 0 12px;font-size:20px}.flow p{min-height:0;font-size:15px}.step-output{margin-top:18px}.loop-line{flex-wrap:wrap}.empty-media{padding:20px;min-height:240px}#cases .section-head h2,#growth .section-head h2{font-size:28px}header>.button{font-size:11px;padding:8px 10px;margin-right:8px;gap:6px}}

/* V5 purple and acid lime branding */
.native-subtitle{font-size:17px;color:var(--muted);margin-top:20px;line-height:1.8}.label-two{min-width:252px}.cta-logo{width:230px;height:auto;transform:rotate(-9deg)}.icon img{width:38px}.video-card .case-placeholder img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}.video-card .image-tag{background:#111b;padding:5px 8px;border-radius:4px;color:white}.video-card .case-placeholder{overflow:hidden;border-style:solid}.video-card:hover img{transform:scale(1.035);transition:.3s}#case-video{display:block;width:100%;max-height:64vh;background:#080a10;border-radius:10px;margin-top:22px}.final-cta{background:var(--lime)}.hero-note{color:#b5b7c5}
@media(max-width:760px){.native-subtitle{font-size:15px}.label-two{min-width:226px;font-size:12px}.cta-logo{width:115px}.platform-inner{gap:24px}.platform-inner strong{font-size:19px}}

.result-image{height:240px;background:linear-gradient(130deg,#232039,#1d2318)}.result-image img{object-fit:contain}.filters{flex-wrap:wrap}.case-meta h3{line-height:1.6}

/* V6 lead collection */
.platform-inner{gap:clamp(24px,5vw,70px);flex-wrap:wrap;padding-block:25px}.platform-inner strong{white-space:nowrap}header>.button{font-size:12px;max-width:265px;text-align:left}.upload-help{font-size:12px;color:var(--muted)}#upload-preview{display:flex;align-items:center;gap:18px;margin:12px 0}#product-preview{width:100px;height:100px;object-fit:contain;border-radius:8px}#remove-image{color:var(--lime)}#submit-status{font-size:14px;color:var(--lime);white-space:pre-wrap}.submit:disabled{opacity:.6;cursor:wait}input[type=file]{padding:12px;font-size:13px}input::file-selector-button{background:var(--purple);border:0;border-radius:5px;padding:8px;margin-right:10px}#contact-title{font-size:clamp(26px,3vw,36px)}
@media(max-width:760px){header>.button{max-width:135px;font-size:10px;line-height:1.5;padding:7px 10px;gap:4px}.platform-inner{gap:18px 24px}.platform-inner strong{font-size:17px}.actions{flex-wrap:wrap}.actions .button{font-size:13px}#case-contact{font-size:12px}}

/* V7 Feishu hosted application form */
#contact-dialog{width:min(1000px,94vw);max-width:1000px}#contact-dialog .dialog-body{padding:26px}#contact-title{font-size:clamp(22px,3vw,30px);padding-right:25px}#lead-form-frame{display:block;width:100%;height:65vh;min-height:360px;border:0;border-radius:10px;background:white;margin-top:16px}#contact-dialog .form-notice{font-size:12px;margin-top:12px}#contact-dialog .button{padding:8px 14px;font-size:12px}@media(max-width:760px){#contact-dialog .dialog-body{padding:18px}#lead-form-frame{height:65dvh;min-height:300px}#contact-title{font-size:22px}}

.video-feedback{margin:12px 0;color:var(--muted);font-size:14px;min-height:24px}.video-feedback button{margin-top:10px}

#lead-dialog{width:min(1000px,calc(100vw - 32px));max-width:1000px;padding:0;max-height:90dvh;background:#15161c;border:1px solid #393941;border-radius:20px;color:var(--text)}#lead-dialog::backdrop{background:#050609c9;backdrop-filter:blur(8px)}#lead-dialog .close{position:absolute;right:15px;top:12px;z-index:3}.lead-layout{display:grid;grid-template-columns:300px 1fr}.lead-aside{padding:42px 30px;background:radial-gradient(ellipse at 0 0,#4a3a6c 0,transparent 65%),#211c30;display:flex;flex-direction:column;align-items:flex-start}.lead-aside .eyebrow{margin-top:36px;font-size:10px;color:#c9b7ed}.lead-aside h2{font-size:36px;margin:20px 0}.lead-aside em{font-style:normal;color:var(--lime)}.lead-aside p{font-size:14px;color:#c4bed0}.lead-benefits{display:grid;gap:20px;margin:40px 0;color:var(--purple);font-size:12px}.lead-benefits b{font-weight:400;color:#ddd5e9;margin-left:12px}.lead-aside>small{font-size:11px;color:#b0a3c2;margin-top:auto;padding-top:35px}.lead-main{padding:38px 40px}.lead-main>.eyebrow{font-size:10px;color:var(--purple)}.lead-main h2{font-size:27px;line-height:1.45;margin:12px 0}.lead-main h2 span{color:var(--lime)}.lead-intro{font-size:13px;color:var(--muted)}.lead-intro>span{display:block;font-size:11px;margin-top:4px}.lead-section-title{font-size:11px;letter-spacing:1px;color:var(--purple);margin:26px 0 14px}.lead-fields{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}#lead-form label{display:block;margin:0 0 14px;font-size:12px;color:#e6e4eb}#lead-form i{font-style:normal;color:var(--purple)}#lead-form input:not([type=checkbox]):not([type=file]),#lead-form select,#lead-form textarea{display:block;width:100%;margin-top:7px;padding:11px 12px;border:1px solid #393a44;background:#101116;color:var(--text);border-radius:8px;font-size:13px}#lead-form label>small{color:var(--muted);font-size:10px;margin-left:6px}.lead-help{font-size:11px;color:var(--muted);margin:0 0 13px}.market-field{border:0;padding:0;margin:0 0 18px}.market-field legend{font-size:12px;margin-bottom:10px}.market-field legend small{margin-left:8px;color:var(--muted)}.market-options{display:flex;gap:7px;flex-wrap:wrap}#lead-form .market-options label{margin:0;position:relative;cursor:pointer}.market-options input{position:absolute;opacity:0;width:100%;height:100%;margin:0;cursor:pointer}.market-options span{display:block;border:1px solid #3e3d49;border-radius:30px;padding:6px 12px;font-size:11px}.market-options input:checked+span{background:#b697f622;border-color:var(--purple);color:#d8c3ff}.market-options input:focus-visible+span{outline:2px solid var(--lime);outline-offset:2px}#lead-form .upload-area{position:relative;border:1px dashed #615374;background:#b697f609;border-radius:10px;padding:18px;text-align:center;cursor:pointer}.upload-area input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.upload-area:focus-within{outline:2px solid var(--purple)}.upload-icon{font-size:25px;color:var(--purple);display:block}.upload-area b{display:block;font-weight:500}#lead-form .upload-area small{display:block;margin:4px 0 0}#image-preview{display:flex;align-items:center;gap:12px;margin-bottom:16px;font-size:12px;overflow-wrap:anywhere}#image-preview img{width:65px;height:65px;object-fit:cover;border-radius:8px}#remove-image{background:none;border:0;color:var(--purple);font-size:12px;white-space:nowrap}.lead-privacy{font-size:11px;color:var(--muted);margin:16px 0}.lead-preview-note{font-size:11px;color:#c9b7ed;background:#b697f612;padding:9px 12px;border-radius:6px}#lead-message{font-size:12px;color:var(--lime);margin:12px 0}.lead-submit{width:100%}@media(max-width:700px){.lead-layout{grid-template-columns:1fr}.lead-aside{display:none}.lead-main{padding:30px 22px}.lead-main h2{font-size:25px}#lead-dialog{max-height:92dvh;border-radius:14px}.lead-fields{grid-template-columns:1fr 1fr;gap:0 10px}}@media(max-width:380px){.lead-fields{grid-template-columns:1fr}}
.footer-top button[data-contact]{border:0;background:none;padding:0;color:inherit;font:inherit;text-align:left;cursor:pointer}

/* Ivory brand edition: purple emphasizes meaning, ivory carries the interface. */
.lime-text,.result-metric,.lead-main h2 span,.lead-aside em,.coop-num{color:var(--purple)}
nav a:hover,nav a.active{color:var(--purple)}nav a.active:after{background:var(--purple)}
.brand .brand-lockup{width:178px;height:auto;max-width:none}.brand{gap:0}
.final-cta{background:var(--bg);color:var(--text);border:1px solid #65517f}
.final-cta h2{color:var(--purple)}.final-cta .eyebrow,.final-cta>p{color:#b8b0a7}
.final-cta .dark{background:var(--lime);color:#211b29}
.hero .eyebrow{color:var(--purple)}.hero-art{animation:none}
@media(max-width:760px){.brand .brand-lockup{width:132px}}@media(max-width:380px){.brand .brand-lockup{width:113px}}