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@media(max-width:700px){.hero{padding:14px 12px}.kit-brand{margin-bottom:8px}.kit-brand .open-book{font-size:1.8rem}.kit-brand b{font-size:1.55rem}.kit-brand small{font-size:.48rem;margin-top:4px}.hero h1{font-size:clamp(1.2rem,4.5vw,1.6rem);line-height:1.04}.intro{font-size:.64rem;line-height:1.28;margin:6px 0 8px}.hero-points{gap:4px;font-size:.54rem}.hero-points i{width:15px;height:15px;font-size:.58rem}.hero-art{height:130px}.book-mockup{width:92px;height:122px}.mock-spine{width:8px}.mock-content{margin-left:8px;padding:8px 6px}.mock-brand{font-size:.68rem}.mock-class{font-size:.33rem;margin-top:10px}.mock-content strong{font-size:.83rem}.mock-sub{font-size:.3rem}.mock-pending{font-size:.28rem;padding:4px 5px}.hero-stamp{font-size:.36rem;padding:5px}}
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.book-title-link:hover{color:#0757b7}.book-details-link{border:1px solid #b8d6f3;background:#f5faff;color:#0757b7}.book-details-link:hover{background:#e8f4ff}
.store-header{z-index:20}.book-cover-frame{position:relative;min-width:0}.cover-share-button{position:absolute;z-index:2;top:10px;right:10px;width:40px;height:40px;display:grid;place-items:center;padding:0;border:1px solid #d9e4ef;border-radius:50%;background:rgba(255,255,255,.96);color:#123e72;box-shadow:0 3px 12px #102e5426;backdrop-filter:blur(8px);cursor:pointer;transition:transform .18s ease,background .18s ease,box-shadow .18s ease}.cover-share-button svg{width:20px;height:20px;fill:currentColor}.cover-share-button:hover{transform:translateY(-2px);background:#fff;box-shadow:0 6px 16px #102e5430}.cover-share-button:focus-visible{outline:3px solid #80baff;outline-offset:3px}.cover-share-status{position:absolute;z-index:3;top:56px;right:8px;padding:6px 9px;border-radius:6px;background:#101b35;color:#fff;font-size:.63rem;opacity:0;transform:translateY(-3px);pointer-events:none;transition:opacity .16s,transform .16s}.cover-share-status.is-visible{opacity:1;transform:translateY(0)}@media(max-width:700px){.cover-share-button{top:8px;right:8px;width:34px;height:34px}.cover-share-button svg{width:18px;height:18px}.cover-share-status{top:48px;right:6px}}@media(prefers-reduced-motion:reduce){.cover-share-button,.cover-share-status{transition:none}}
.category-filter{justify-content:flex-start;gap:8px;flex-wrap:wrap;margin:0 0 22px;padding:0}.filter{min-width:0;min-height:40px;padding:9px 15px;border:1px solid #e1e7ee;border-radius:999px;background:#fff;color:#344054;font-size:.8rem;font-weight:600;line-height:1.2;white-space:nowrap;box-shadow:none;transition:background .16s,border-color .16s,color .16s}.filter:before{display:none;content:none;margin:0}.filter:hover{border-color:#b8c6d8;background:#f8fafc;color:#101b35;box-shadow:none}.filter.active{border-color:#a9cff4;background:#edf6ff;color:#0757b7;box-shadow:none}
@media(max-width:700px){.category-filter{flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;margin:0 0 18px;padding:0 0 5px;scroll-snap-type:x proximity;scrollbar-width:thin;scrollbar-color:#cbd5e1 transparent}.category-filter::-webkit-scrollbar{height:4px}.category-filter::-webkit-scrollbar-thumb{border-radius:4px;background:#cbd5e1}.filter{flex:0 0 auto;min-height:38px;padding:8px 13px;font-size:.74rem;scroll-snap-align:start}}
@media(max-width:700px){.hero{grid-template-columns:minmax(0,1fr) 82px;gap:6px;padding:11px 12px}.kit-brand{gap:6px;margin-bottom:7px}.kit-brand .open-book{font-size:1.55rem}.kit-brand b{font-size:1.42rem}.kit-brand small{font-size:.46rem;line-height:1.15;margin-top:3px}.hero h1{font-size:clamp(1.12rem,4.2vw,1.45rem);line-height:1.02}.intro{font-size:.6rem;line-height:1.2;margin:5px 0 7px}.hero-points{grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 6px;font-size:.5rem;line-height:1.15}.hero-points i{width:14px;height:14px;font-size:.52rem;margin-right:3px}.hero-art{height:104px}.book-mockup{width:70px;height:94px}.mock-spine{width:7px}.mock-content{margin-left:7px;padding:6px 5px}.mock-brand{font-size:.55rem}.mock-class{font-size:.27rem;margin-top:7px}.mock-content strong{font-size:.68rem}.mock-sub{font-size:.25rem}.mock-pending{font-size:.22rem;padding:3px}.hero-stamp{font-size:.3rem;padding:4px}}
@media(max-width:380px){.hero{grid-template-columns:minmax(0,1fr) 72px;padding:10px}.hero-art{height:92px}.book-mockup{width:62px;height:84px}.hero h1{font-size:1.08rem}.hero-points{font-size:.46rem}}