/* v26. Optical logo sizing; original artwork and aspect ratios preserved. Shared service hierarchy. PingFang/system family inherited; weights 400/600.
   Navy = brand/new-customer headings; warm gold = supporting efficiency work.
   Desktop titles 28/30px, body 16px, utility labels 13/14px. Mobile body 16px. */
.business-dropdown{position:absolute;right:-110px;top:54px;width:560px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 18px 45px #12203b14}
.business-menu-columns{display:grid;grid-template-columns:1fr 1fr;gap:25px}
.business-menu-growth{border-left:1px solid #e1e6ef;padding-left:25px}
.business-menu-heading,.business-menu-efficiency>a{display:flex;justify-content:space-between;gap:12px;align-items:center;min-height:35px}
.business-menu-heading strong{font-size:18px;font-weight:600;color:var(--navy)}
.business-menu-heading>span,.business-menu-efficiency>a>span{font-size:18px;color:var(--blue)}
.business-menu-columns p{font-size:12px;color:#66758a;margin-top:5px;line-height:1.7}
.business-menu-links{display:grid;margin-top:13px}
.business-menu-links>a{font-size:14px;line-height:1.5;padding:10px 0;color:#354b66}
.business-menu-links>a:hover,.business-menu-heading:hover strong{color:var(--blue)}
.business-menu-efficiency{border-top:1px solid #e1e6ef;margin-top:17px;padding-top:13px}
.business-menu-efficiency strong{font-size:15px;font-weight:600;color:#796039}
.business-menu-all{display:flex;justify-content:space-between;padding-top:17px;margin-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--blue)}
.business-dropdown a:focus-visible,.business-lines a:focus-visible,.brand-service-index a:focus-visible{outline:2px solid var(--blue);outline-offset:4px;border-radius:5px}
.infinity-label{width:38%;height:72%;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:50%;text-decoration:none;transition:background .18s}
.infinity-label>small{display:block;font-size:13px;color:var(--blue);margin-top:8px}
.infinity-label:hover{background:#ffffff38}
.infinity-label:focus-visible{outline:2px solid var(--blue);outline-offset:0}
.cycle-efficiency{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:27px;padding-top:19px;border-top:1px solid #dbe3ee;color:#796039}
.cycle-efficiency strong{display:block;font-size:17px;font-weight:600;line-height:1.5}
.cycle-efficiency small{display:block;font-size:13px;color:#66758a;line-height:1.7;margin-top:4px}
.cycle-efficiency>span:last-child{font-size:25px}
.cycle-efficiency:focus-visible{outline:2px solid var(--blue);outline-offset:5px}
.business-lines{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.brand-business-column{display:flex;flex-direction:column;gap:18px;min-width:0}
.business-line{border-radius:22px;padding:34px;background:white;border:1px solid #dbe3ef;min-width:0}
.business-line-index{font-size:13px;color:#64758d;margin-bottom:21px}
.business-line h3{font-size:30px;font-weight:600;line-height:1.5;color:var(--navy)}
.business-line h3>a{display:flex;align-items:baseline;justify-content:space-between;gap:20px}
.business-line h3 span{font-weight:400;font-size:26px;color:var(--blue)}
.business-line>p:not(.business-line-index){font-size:16px;line-height:1.9;color:#586980;margin-top:18px}
.business-channel-links{display:grid;margin-top:25px}
.business-channel-links>a{display:grid;grid-template-columns:58px 1fr;gap:12px;align-items:center;min-height:66px;border-top:1px solid #e0e6ef;font-size:16px;color:var(--navy)}
.business-channel-links img{object-fit:contain;max-height:25px;max-width:50px}
.business-channel-links img[src*=wechat]{width:31px;max-height:28px;justify-self:center}

.web-channel-icon{width:36px;height:28px;color:var(--navy);stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;justify-self:center}
.business-efficiency{display:flex;align-items:center;gap:18px;border:1px solid #d5deeb;background:#e7edf6;border-radius:17px;padding:22px 26px;flex:1}
.business-efficiency strong{font-size:19px;line-height:1.5;color:var(--navy);font-weight:600;display:block}
.business-efficiency small{font-size:13px;line-height:1.85;color:#5d6d83;display:block;margin-top:5px}

.efficiency-glyph{font-size:30px;color:#796039;font-weight:400}
.business-line-growth{background:#fbfcfe}
.business-platforms{--ad-logo-height:32px;--ad-name-size:21px;display:grid;gap:19px;margin-top:29px;padding-block:20px;border-block:1px solid #dce4ef}
.ad-product-line{display:flex;align-items:center;gap:27px;flex-wrap:wrap;min-height:33px}
.ad-product-line>a{display:inline-flex;align-items:center;gap:19px;min-height:36px}
.business-platforms img{height:26px;width:auto;object-fit:contain}
.business-platforms img[src*=juguang]{max-width:128px}
.engine-wordmark{filter:brightness(0);object-fit:contain;width:124px;height:auto}
.business-platforms .engine-wordmark{width:auto;height:var(--ad-logo-height);max-width:none}
.qianchuan-lockup{--ad-logo-height:32px;--ad-name-size:21px;display:flex;align-items:center;gap:8px;color:#181b24}.business-platforms .qianchuan-lockup{--ad-logo-height:inherit;--ad-name-size:inherit;gap:8px}
.qianchuan-symbol{width:var(--ad-logo-height);height:var(--ad-logo-height);display:block;overflow:hidden;flex:none}.qianchuan-symbol>img{display:block;width:150%;height:150%;max-width:none;max-height:none;object-fit:contain;transform:translate(-16.667%,-16.667%)}
.qianchuan-lockup>strong{font-family:inherit;font-size:var(--ad-name-size);line-height:1;font-weight:600;letter-spacing:0;white-space:nowrap}
.business-channel-links .douyin-brand-icon{width:28px;max-height:30px;justify-self:center}
.douyin-product-grid{display:grid;grid-template-columns:1fr 1fr;gap:45px;margin-top:36px}
.douyin-product-grid article{border-top:1px solid #c9d5e5;padding-top:28px}
.douyin-product-logo{height:43px;display:flex;align-items:center;margin-bottom:26px}
.douyin-product-logo .engine-wordmark{width:145px;height:auto}
.douyin-product-logo.qianchuan-lockup{--ad-logo-height:39px;--ad-name-size:26px}
.douyin-product-grid h3{font-size:26px;line-height:1.5;color:var(--navy)}
.douyin-product-grid p{font-size:18px;color:#586980;line-height:1.95;margin-top:20px}
.douyin-product-grid article>span{display:block;color:#657994;font-size:14px;line-height:1.8;margin-top:23px}
.business-delivery-list{list-style:none;counter-reset:delivery;margin-top:19px;padding:0}
.business-delivery-list li{counter-increment:delivery;font-size:16px;line-height:1.8;color:#4f627c;padding:14px 0;display:flex;gap:17px}
.business-delivery-list li:before{content:'0' counter(delivery);color:#8998ad;font-size:13px;margin-top:2px}
.business-line-growth>.text-link{font-size:16px;display:inline-flex;margin-top:24px}
.brand-service-index{display:flex;gap:0;margin-top:0;margin-bottom:50px;border-block:1px solid #dce4ef}
.brand-service-index>a{flex:1;display:flex;justify-content:space-between;gap:18px;font-size:18px;color:var(--navy);padding:24px}
.brand-service-index>a:first-child{padding-left:0}
.brand-service-index>a+a{border-left:1px solid #dce4ef}
.brand-service-index span{color:var(--blue)}
#brand-account,#douyin-account,#wechat,#douyin-ads{scroll-margin-top:105px}
@media(max-width:1050px){.business-platforms{--ad-logo-height:28px;--ad-name-size:20px}.ad-product-line{gap:16px}.business-line{padding:28px}.business-line h3{font-size:27px}.business-dropdown{right:-135px;width:520px}.business-menu-columns{gap:20px}.business-menu-growth{padding-left:20px}}
@media(max-width:760px){
 .business-dropdown{position:static;width:100%;padding:20px 16px;background:#f6f8fb;border:0;border-radius:13px;box-shadow:none;margin-bottom:12px}
 .business-menu-columns{grid-template-columns:1fr;gap:25px}.business-menu-growth{border-left:0;border-top:1px solid #dce4ef;padding:20px 0 0}
 .business-menu-heading strong{font-size:18px}.business-menu-links>a{font-size:15px;min-height:42px}.business-menu-columns p{font-size:13px}.business-menu-efficiency strong{font-size:16px}.business-menu-all{font-size:14px}
 .infinity-label{height:70%;width:42%}.infinity-label>small{font-size:10px;margin-top:4px}.infinity-label>strong{font-size:20px}
 .cycle-efficiency strong{font-size:17px}.cycle-efficiency small{font-size:13px}
 .business-lines{grid-template-columns:1fr;gap:25px}.business-line{padding:28px 24px;border-radius:18px}.business-line h3{font-size:27px}.business-line-index{margin-bottom:15px}.business-channel-links>a{font-size:16px}.business-line>p:not(.business-line-index){font-size:16px}
 .business-efficiency{padding:22px;gap:13px}.business-efficiency strong{font-size:18px}.business-efficiency small{font-size:13px}.business-platforms{gap:18px}.ad-product-line{gap:16px}.ad-product-line>a{gap:13px}.douyin-product-grid{grid-template-columns:1fr;gap:32px;margin-top:29px}.douyin-product-grid h3{font-size:25px}.douyin-product-grid p{font-size:16px}.douyin-product-grid article>span{font-size:13px}.business-delivery-list li{font-size:16px}
 .brand-service-index{display:grid;grid-template-columns:1fr;margin-bottom:35px}.brand-service-index>a{padding:19px 0;font-size:17px}.brand-service-index>a+a{border-left:0;border-top:1px solid #dce4ef}
}
@media(max-width:350px){.infinity-diagram{margin-top:16px}.infinity-label{top:50%;transform:translate(-50%,-50%)}.infinity-label>strong{font-size:17px}.infinity-label>small{font-size:9px}.business-line{padding:25px 20px}.business-line h3{font-size:24px}}
@media(prefers-reduced-motion:reduce){.infinity-label{transition:none}}
/* v31 homepage: one overview and one set of service destinations, before the simulator. */
.business-overview>.wrap{width:min(1280px,calc(100% - 80px));max-width:1280px}.business-overview .strategy-intro{max-width:900px}.business-overview .strategy-intro h2{font-size:44px;color:var(--navy)}.business-overview .strategy-intro>.eyebrow{font-size:16px}.business-overview .strategy-intro>p:last-child{font-size:21px}.business-overview .growth-cycle{margin-top:36px;padding:22px 36px 0;border-radius:22px}.business-overview .infinity-diagram{max-width:920px}.business-overview .cycle-explainer{max-width:none;margin:10px 0 0;padding:24px 0 28px;border-top:1px solid #dce4ef;align-items:center}.business-overview .cycle-explainer strong{font-size:18px}.business-overview .cycle-explainer p>span{font-size:17px}.business-overview .business-lines{margin-top:30px;gap:28px}.business-overview .business-line{padding:32px 34px}.business-overview .business-line-index{font-size:15px;display:flex;align-items:center;gap:9px;margin-bottom:19px;color:#4f6788}.business-overview .business-line-index:before{content:'';display:block;flex:none;width:7px;height:7px;border-radius:50%;background:var(--navy)}.business-overview .business-line-growth .business-line-index:before{background:#aa8c4f}.business-overview .business-line h3{font-size:34px}.business-overview .business-line>p:not(.business-line-index){font-size:18px}.business-overview .business-channel-links>a{font-size:18px;min-height:71px}.business-overview .business-delivery-list li{font-size:18px}.business-overview .business-efficiency{background:#f7f9fc;padding:24px 30px}.business-overview .business-efficiency strong{font-size:22px}.business-overview .business-efficiency small{font-size:16px}.business-overview .business-line .text-link{font-size:18px}
@media(max-width:760px){.business-overview>.wrap{width:calc(100% - 40px)}.business-overview .strategy-intro h2{font-size:32px}.business-overview .strategy-intro>.eyebrow{font-size:14px}.business-overview .strategy-intro>p:last-child{font-size:18px}.business-overview .growth-cycle{padding:15px 20px 0;margin-top:27px}.business-overview .infinity-diagram{margin:8px -17px}.business-overview .cycle-explainer{padding:20px 0 24px;align-items:start;gap:11px}.business-overview .cycle-explainer strong{font-size:17px}.business-overview .cycle-explainer p>span{font-size:16px}.business-overview .business-lines{margin-top:24px;gap:24px}.business-overview .business-line{padding:27px 24px}.business-overview .business-line-index{font-size:14px}.business-overview .business-line h3{font-size:29px}.business-overview .business-line>p:not(.business-line-index){font-size:17px}.business-overview .business-channel-links>a{font-size:17px}.business-overview .business-delivery-list li{font-size:17px}.business-overview .business-efficiency{padding:23px}.business-overview .business-efficiency strong{font-size:21px}.business-overview .business-efficiency small{font-size:15px}}

.business-overview .business-line h3>a{align-items:center;gap:14px}.business-overview .business-title-mark{width:36px;height:36px;flex:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;color:var(--navy)}.business-overview .business-line-growth .business-title-mark{color:#92723b}.business-overview .business-line h3 .business-title-name{flex:1;font-size:inherit;font-weight:600;color:inherit}
@media(max-width:760px){.business-overview .business-title-mark{width:28px;height:28px}.business-overview .business-line h3>a{gap:10px}}

/* Link affordance without repeated decorative arrows. */
.business-channel-links>a:hover,.business-line h3>a:hover .business-title-name,.business-menu-links>a:hover,.business-menu-heading:hover strong,.business-menu-efficiency>a:hover strong{text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px}