:root{--navy:#071b3a;--blue:#0866d8;--blue2:#2f79ef;--yellow:#ffd51f;--cyan:#18bde5;--text:#071a36;--muted:#617695;--line:#cddff4;--ice:#eef6ff;--white:#fff;--shadow:0 24px 60px rgba(18,67,127,.13)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--text);font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;background:#fff;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}.container{width:min(1180px,calc(100% - 48px));margin:auto}.section{padding:108px 0}.eyebrow{margin:0 0 18px;color:#0b5cbd;font-size:15px;font-weight:800;letter-spacing:.2em}.section-title{text-align:center;max-width:900px;margin:0 auto 54px}.section-title h2{margin:0;font-size:clamp(34px,4vw,52px);line-height:1.18;letter-spacing:-.045em}.section-title>p:last-child{font-size:20px;color:var(--muted);line-height:1.8;margin:16px 0 0}.section-title.light h2,.section-title.light p{color:#fff}.section-title.light .eyebrow{color:#80d7ff}.reveal{opacity:0;transform:translateY(24px);transition:opacity .72s ease,transform .72s ease}.reveal.is-visible{opacity:1;transform:none}
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.trust-strip{padding:36px 0;background:#fff;border-bottom:1px solid var(--line)}.stats{display:grid;grid-template-columns:repeat(4,1fr)}.stats article{text-align:center;padding:14px 20px;border-right:1px solid var(--line)}.stats article:last-child{border:0}.stats i{display:block;font-style:normal;color:#0d66d2;font-size:22px}.stats strong{display:block;font-size:48px;line-height:1.15;color:#0b62ce;margin:6px 0}.stats h3{margin:0;font-size:17px}.stats p{margin:6px 0 0;color:#7b8ca4}
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.app-section{background:#f5f8fc}.app-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:58px;align-items:center}.app-copy>p:not(.eyebrow){font-size:19px;line-height:1.85;color:var(--muted)}.app-goals{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:32px}.app-goals article{padding:18px 10px;text-align:center;border-radius:16px;background:#fff;border:1px solid #d2e1f2}.app-goals b,.app-goals span,.app-goals strong{display:block}.app-goals b{color:#0b69d4;font-size:12px}.app-goals span{margin:7px 0;color:var(--muted)}.app-goals strong{font-size:18px}.app-engine{height:550px;position:relative;border-radius:30px;background:linear-gradient(140deg,#091324,#071b35);overflow:hidden;box-shadow:0 30px 70px rgba(4,27,56,.25)}#appCanvas{position:absolute;inset:0;width:100%;height:100%}.phone{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:220px;height:390px;border-radius:38px;background:#101319;border:8px solid #f9fbff;box-shadow:0 0 0 2px #1b91e7,0 25px 50px rgba(0,0,0,.4);z-index:2;padding:12px}.phone:before{content:"";position:absolute;left:50%;top:7px;transform:translateX(-50%);width:66px;height:14px;border-radius:20px;background:#05070b}.phone-screen{height:100%;border-radius:24px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#fff;background:radial-gradient(circle at 50% 35%,#6940b2 0,#1b416d 38%,#08202f 72%)}.phone-screen small{letter-spacing:.16em;color:#62e8ff}.phone-screen strong{font-size:46px;line-height:.94;margin:20px 0;color:#fff}.phone-screen span{font-size:12px;color:#9cddf2}.app-channel{position:absolute;width:160px;padding:17px;border-radius:18px;background:#fff;z-index:3;box-shadow:0 15px 35px rgba(0,0,0,.25)}.app-channel>div{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:#0b65d2;color:#fff;font-size:21px;font-weight:900;float:left;margin-right:10px}.app-channel b,.app-channel span{display:block}.app-channel b{font-size:15px;margin-top:1px}.app-channel span{font-size:11px;color:var(--muted);margin-top:3px}.ac-google{left:5%;top:11%}.ac-meta{right:5%;top:14%}.ac-tiktok{left:7%;bottom:12%}.ac-video{right:5%;bottom:12%}.app-strategy{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px}.app-strategy article{padding:26px;border:1px solid #cbddef;border-radius:20px;background:#fff}.app-strategy i{font-style:normal;font-size:12px;color:#0b66d1;font-weight:800;letter-spacing:.1em}.app-strategy h3{font-size:20px}.app-strategy p{line-height:1.7;color:var(--muted)}
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.contact-section{background:#eaf4ff}.contact-card{display:grid;grid-template-columns:.9fr 1.1fr;border-radius:30px;overflow:hidden;background:linear-gradient(135deg,#064ba8,#0878e5);color:#fff;box-shadow:0 28px 65px rgba(8,81,171,.25)}.contact-copy{padding:56px}.contact-copy h2{font-size:44px;line-height:1.2;margin:12px 0 20px}.contact-copy>p:not(.eyebrow){font-size:18px;line-height:1.8;color:#e4f1ff}.contact-copy .eyebrow{color:#83d8ff}.contact-badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:26px}.contact-badges span{padding:9px 12px;border:1px solid rgba(255,255,255,.25);border-radius:999px}.contact-panel{margin:30px;background:#fff;border-radius:22px;padding:20px;color:var(--text);display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.contact-panel>a,.contact-panel>.address{display:flex;gap:14px;align-items:center;padding:17px;border-radius:15px;background:#f3f8fe;border:1px solid #d4e3f3;transition:.2s}.contact-panel>a:hover{transform:translateY(-2px);border-color:#61a4ed}.contact-panel i{flex:0 0 40px;height:40px;border-radius:12px;background:#0b66d2;color:#fff;display:grid;place-items:center;font-style:normal}.contact-panel small,.contact-panel strong,.contact-panel span{display:block}.contact-panel small{color:var(--muted)}.contact-panel strong{font-size:17px;margin:4px 0}.contact-panel span{font-size:12px;color:#0b64cd}.contact-panel .address{grid-column:1/-1}.contact-panel .address span{color:var(--muted)}
footer{background:#071b36;color:#b9cbe2;padding:56px 0 0}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:50px}.footer-grid>div:first-child img{width:190px}.footer-grid p{line-height:1.9}.footer-grid h3{color:#fff}.footer-grid a{display:block;margin:12px 0}.copyright{text-align:center;border-top:1px solid rgba(255,255,255,.1);padding:20px;margin-top:44px;font-size:13px}
@keyframes spin{to{transform:rotate(360deg)}}@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes pulse{0%,100%{transform:scale(.8);opacity:.7}50%{transform:scale(1.2);opacity:1}}@keyframes drawLine{from{scale:0 1}to{scale:1 1}}
@media(max-width:1080px){.desktop-nav{gap:18px;font-size:14px}.brand img{width:160px}.hero-grid{grid-template-columns:1fr 1fr}.hero-copy h1{font-size:51px}.blueprint-grid,.app-grid{grid-template-columns:1fr}.blueprint-intro{max-width:760px}.strategy-steps,.commerce-strategy,.app-strategy{grid-template-columns:repeat(2,1fr)}.measurement-board{grid-template-columns:1fr}.chart{margin:35px 12px 0}.contact-card{grid-template-columns:1fr}.contact-panel{margin-top:0}}
@media(max-width:760px){.container{width:min(100% - 32px,1180px)}.section{padding:78px 0}.site-header{height:73px;padding:0 16px;grid-template-columns:1fr auto}.brand img{width:145px}.desktop-nav,.header-actions{display:none}.menu-toggle{display:flex;width:42px;height:42px;border:0;background:transparent;flex-direction:column;justify-content:center;gap:5px}.menu-toggle span{display:block;width:25px;height:3px;background:#092448;margin:auto}.mobile-nav{position:fixed;left:0;right:0;top:73px;z-index:99;background:#fff;padding:16px 24px;box-shadow:0 18px 35px rgba(8,48,98,.15)}.mobile-nav.open{display:grid}.mobile-nav a{padding:13px 0;border-bottom:1px solid #e2eaf4;font-weight:700}.hero{min-height:auto}.hero-grid{grid-template-columns:1fr;min-height:auto}.hero-copy{padding:70px 0 20px}.hero-copy h1{font-size:42px}.hero-lead{font-size:17px}.hero-actions{display:grid}.btn{width:100%}.hero-tags{gap:12px;font-size:13px}.hero-visual{height:390px}.hero-core{width:138px;height:138px;border-width:7px}.hero-core strong{font-size:19px}.industry-orbit{width:94px;height:94px}.industry-orbit strong{font-size:20px}.industry-orbit span{font-size:10px}.platform-chip{width:74px;height:44px;border-radius:12px}.orbit-b2b{left:0}.orbit-b2c{right:0}.orbit-app{right:2%;bottom:0}.chip-google{left:1%;bottom:14%}.chip-meta{left:26%;bottom:0}.chip-ms{right:0}.chip-criteo{right:29%;top:3%}.stats{grid-template-columns:repeat(2,1fr)}.stats article{border-bottom:1px solid var(--line)}.stats article:nth-child(2){border-right:0}.stats strong{font-size:38px}.section-title{margin-bottom:34px}.section-title h2{font-size:34px}.section-title>p:last-child{font-size:17px}.solution-tabs{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px}.solution-tabs button{min-width:270px;scroll-snap-align:start}.strategy-console{grid-template-columns:1fr}.console-copy{padding:32px 24px}.console-copy h3{font-size:30px}.funnel-visual{min-height:420px}.funnel-stage{width:105px;padding:13px}.funnel-result{width:140px;height:140px}.blueprint-grid{gap:32px}.blueprint h2{font-size:38px}.media-matrix{grid-template-columns:1fr}.strategy-steps{grid-template-columns:1fr 1fr}.commerce-board{height:650px}.commerce-core{width:165px;height:165px}.commerce-core strong{font-size:17px}.commerce-node{width:145px;height:115px;padding:15px}.cn-search{left:4%;top:6%}.cn-social{right:4%;top:6%}.cn-video{left:4%;bottom:6%}.cn-retarget{right:4%;bottom:6%}.commerce-strategy,.app-strategy{grid-template-columns:1fr}.commerce-strategy p{min-height:0}.app-goals{grid-template-columns:repeat(2,1fr)}.app-engine{height:500px}.phone{width:170px;height:320px}.app-channel{width:130px;padding:12px}.ac-google,.ac-tiktok{left:2%}.ac-meta,.ac-video{right:2%}.method-flow{display:grid;grid-template-columns:1fr 1fr;gap:16px}.method-flow>b{display:none}.method-flow>article{padding:18px;border:1px solid #d4e3f3;border-radius:18px}.measurement-board{padding:20px}.board-heading{display:block}.board-heading h3{font-size:23px}.board-heading>span{display:block;margin-top:12px}.metric-cards{grid-template-columns:1fr}.chart{height:210px;margin-left:10px}.contact-copy{padding:38px 26px}.contact-copy h2{font-size:35px}.contact-panel{grid-template-columns:1fr;margin:0 16px 16px;padding:14px}.contact-panel .address{grid-column:auto}.footer-grid{grid-template-columns:1fr 1fr;gap:24px}.footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:420px){.hero-copy h1{font-size:37px}.hero-visual{height:350px}.funnel-stage{width:96px}.funnel-result{width:125px;height:125px}.funnel-result strong{font-size:28px}.strategy-steps{grid-template-columns:1fr}.commerce-board{height:610px}.commerce-node{width:132px}.app-engine{height:470px}.app-channel{width:117px}.footer-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.reveal{opacity:1;transform:none}}
/* 821–1100px 区间首屏仍为双列，收窄标题字号避免长句换行不协调 */
@media(min-width:821px) and (max-width:1100px){.hsou-main-hero .hero-copy h1{font-size:35px !important}}