:root{--page-max-width:1320px;--page-x:clamp(22px,5vw,72px);color:#251f39;background:#fff9fd;font-family:ui-rounded,SF Pro Rounded,Microsoft YaHei,PingFang SC,Arial,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:82px}body{margin:0;overflow-x:hidden;background:#fff9fd}a{color:inherit}img{max-width:100%}.siteHeader{position:fixed;inset:0 0 auto;z-index:40;border-bottom:1px solid rgba(255,255,255,.72);background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.siteNav{width:min(100%,var(--page-max-width));margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px var(--page-x)}.siteBrand{min-width:0;display:inline-flex;align-items:center;gap:10px;color:#ff4f8b;font-size:1.15rem;font-weight:900;text-decoration:none;white-space:nowrap}.brandMark{width:40px;height:40px;display:block;flex:0 0 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svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:2.5}.section{background:#fffaf5}.sectionShell{width:min(100%,var(--page-max-width));margin:0 auto;padding:64px var(--page-x)}.introBand{background:#fff8ed}.sectionHeader{max-width:960px}.platformCopy p,.sectionHeader p:not(.eyebrow),.storeSection p,.subjectIntro>p{color:#655f75;font-size:1.05rem;line-height:1.8}.sectionHeader p:not(.eyebrow){margin:18px 0 0}.subjectSection{background:#fff9fd}.subjectInner{width:min(100%,var(--page-max-width));margin:0 auto;display:grid;grid-template-columns:minmax(260px,.48fr) minmax(0,1fr);grid-gap:28px;gap:28px;align-items:start;padding:56px var(--page-x)}.subject-baby{background:#fff9fd}.subject-cat{background:#f4fffb}.subject-dog{background:#fff6df}.subjectIntro{position:-webkit-sticky;position:sticky;top:24px}.subjectIntro>p{margin:18px 0 24px}.originPair{display:grid;grid-template-columns:56px 96px 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img{width:100%;height:118px;display:block;object-fit:contain;border-radius:8px;background:#fffaf2}.stickerTile figcaption{min-height:1.35rem;margin-top:8px;color:#4d465d;font-size:.88rem;font-weight:800;line-height:1.35;text-align:center}.platformSection{background:#f4fffb}.platformGrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:18px;gap:18px;margin-top:34px}.platformCard{overflow:hidden;border:1px solid #d9eee7;border-radius:8px;background:white;box-shadow:0 18px 42px rgba(55,116,98,.1)}.phonePreview{position:relative;aspect-ratio:9/16;overflow:hidden;background:#ecfbf6}.phonePreview>img:first-child{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.chatSticker{position:absolute;z-index:1;display:block;height:auto;aspect-ratio:1/1;object-fit:contain;filter:drop-shadow(0 14px 22px rgba(37,31,57,.22))}.wechatPlacement{right:13%;top:40.6%;width:31%}.qqPlacement{right:10.5%;top:47%;width:32%}.platformCopy{min-height:148px;padding:16px}.platformCopy 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img{width:100%;aspect-ratio:1/1;object-fit:contain;display:block}.adminUploadedGrid figcaption{margin-top:8px;color:#4f5c55;font-size:.86rem;font-weight:800;text-align:center}@media (max-width:1080px){.siteNavLink{display:none}.heroInner{grid-template-columns:1fr;min-height:auto}.heroText{max-width:780px}.heroFlow{max-width:640px;justify-self:start}.deliverySteps,.platformGrid{grid-template-columns:repeat(2,minmax(0,1fr))}.deliverySteps li:after{content:none}.stickerGallery{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (max-width:820px){h1{font-size:3.1rem}h2{font-size:2rem}.lead{font-size:1.08rem}.subjectInner{grid-template-columns:1fr}.subjectIntro{position:static}.stickerGallery{grid-template-columns:repeat(3,minmax(0,1fr))}.platformGrid,.steps,.storeShell{grid-template-columns:1fr}.deliverySteps li:after{content:none}.storeSection .storeButtons{justify-content:flex-start}}@media (max-width:540px){.siteNav{gap:10px}.siteBrand{font-size:1rem}.brandMark{width:36px;height:36px;flex-basis:36px}.siteNavCta{padding:9px 14px}.heroInner{gap:26px;padding-top:28px;padding-bottom:30px}h1{font-size:2.55rem;line-height:1.08}h2{font-size:1.75rem}.storeButton{width:100%}.stickerStrip{grid-template-columns:repeat(3,64px)}.flowRow{grid-template-columns:minmax(0,1fr) 40px minmax(0,1fr);gap:8px;padding:10px}.flowArrow{width:40px;height:40px}.stageFrame span{font-size:.72rem}.stageFrame img{height:132px}.originPair{grid-template-columns:56px minmax(0,1fr) 44px}.originPair img{width:100%;height:auto;aspect-ratio:3/4}.originArrow{justify-self:center;margin-right:0}.stickerGallery{gap:10px}.stickerTile{padding:8px}.stickerTile img{height:104px}.platformCopy{min-height:auto}.packPage h1,.plainPage h1,.stateBox h1{font-size:2rem}}