.platform-header{z-index:40;background:var(--background);border-bottom:1px solid var(--border);align-items:center;gap:28px;min-height:84px;padding:16px 28px;display:flex;position:sticky;top:0}.platform-brand{align-items:center;gap:12px;min-width:216px;font-size:17px;font-weight:700;display:flex}.platform-brand small{letter-spacing:.16em;color:var(--muted-foreground);margin-top:3px;font-size:8px;display:block}.header-search{background:var(--secondary);border-radius:8px;flex:1;align-items:center;gap:12px;max-width:480px;padding:10px 14px;font-size:12px;display:flex}.header-search input{outline:none;width:100%;min-width:0}.account-button{align-items:center;gap:8px;min-height:44px;font-size:12px;display:flex}.platform-sidebar{border-right:1px solid var(--border);flex-direction:column;width:238px;padding:30px 20px;display:flex;position:fixed;top:85px;bottom:0;left:0;overflow-y:auto}.sidebar-label,.platform-overline{letter-spacing:.15em;color:var(--muted-foreground);font-size:10px;font-weight:600}.sidebar-label{margin:0 12px 18px}.sidebar-link{min-height:46px;color:var(--muted-foreground);border-radius:8px;align-items:center;gap:12px;margin-bottom:4px;padding:10px 12px;font-size:13px;display:flex}.sidebar-link:hover,.sidebar-link.is-active{background:var(--secondary);color:var(--foreground)}.sidebar-link.is-active{font-weight:700}.sidebar-bottom{margin-top:auto;padding-top:32px}.sidebar-publish{border-top:1px solid var(--border);margin-top:24px;padding:24px 12px;font-size:12px}.sidebar-publish strong{margin:12px 0 6px;display:block}.sidebar-publish p{color:var(--muted-foreground);line-height:1.6}.sidebar-publish a{color:var(--accent);margin-top:14px;font-weight:600;display:block}.platform-content{flex:1;min-width:0;margin-left:238px}.platform-mobile-nav{display:none}.store-layout{grid-template-columns:minmax(0,1fr) 245px;gap:36px;max-width:1500px;margin:auto;padding:34px;display:grid}.store-main,.store-insights{min-width:0}.store-title{justify-content:space-between;align-items:center;gap:20px;margin-bottom:25px;display:flex}.store-title h1{margin-top:8px;font-size:32px;line-height:1.15}.store-format{white-space:nowrap;border:1px solid var(--border);border-radius:4px;padding:7px 9px;font-size:10px}.store-search{border:1px solid var(--border);background:var(--card);border-radius:9px;align-items:center;gap:12px;padding:6px 6px 6px 14px;display:flex}.store-search input{outline:none;flex:1;min-width:0;font-size:13px}.store-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin:25px 0;display:flex}.store-tabs{gap:8px;display:flex}.store-tabs button{border-radius:6px;padding:9px 13px;font-size:12px}.store-tabs button[aria-pressed=true]{background:var(--foreground);color:var(--background)}.genre-select{align-items:center;gap:8px;font-size:12px;display:flex}.genre-select select{background:0 0;max-width:180px;min-height:40px}.book-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:30px 20px;display:grid}.book-grid h2,.book-grid p{overflow-wrap:anywhere}.book-grid .font-serif{font-size:16px}.book-grid img{border-radius:4px}.book-skeleton div{aspect-ratio:2/3;background:var(--secondary);border-radius:4px}.book-skeleton span{background:var(--secondary);width:80%;height:10px;margin-top:12px;display:block}.book-skeleton span:last-child{width:45%}.platform-empty{border:1px dashed var(--border);text-align:center;border-radius:12px;padding:40px 24px}.platform-empty>svg{margin:auto}.platform-empty h2{margin:14px 0;font-size:25px}.platform-empty p{color:var(--muted-foreground);max-width:420px;margin:12px auto;font-size:13px;line-height:1.8}.platform-empty button,.platform-empty a{margin-top:12px}.empty-spines{justify-content:center;align-items:end;gap:6px;height:75px;margin-bottom:22px;display:flex}.empty-spines i{border:1px solid var(--border);background:var(--secondary);border-radius:3px;width:20px;height:65px}.empty-spines i:nth-child(2n){background:var(--card);height:75px}.empty-spines i:last-child{margin-left:5px;transform:rotate(10deg)}.section-title{justify-content:space-between;align-items:center;gap:12px;display:flex}.section-title h2{font-size:20px}.section-title a{align-items:center;gap:8px;font-size:11px;display:flex}.reading-strip,.library-strip{border-top:1px solid var(--border);margin-top:35px;padding-top:24px}.reading-item{align-items:center;gap:14px;margin-top:18px;display:flex}.reading-item img{object-fit:cover;border-radius:3px;width:42px;height:60px}.reading-item>div{flex:1;min-width:0}.reading-item strong{overflow-wrap:anywhere;font-size:13px;display:block}.reading-item small{color:var(--muted-foreground);margin:5px 0;font-size:11px;display:block}.reading-item progress{width:100%;height:5px;accent-color:var(--accent)}.reading-item>span{font-size:11px}.library-strip{flex-wrap:wrap;align-items:center;gap:15px;display:flex}.library-strip h2{font-size:19px}.library-strip p{color:var(--muted-foreground);margin-top:5px;font-size:12px}.library-strip a{align-items:center;gap:8px;margin-left:auto;font-size:12px;display:flex}.store-insights{border-left:1px solid var(--border);padding-left:25px}.author-mini{align-items:center;gap:10px;margin-top:22px;font-size:12px;display:flex}.author-mini img,.author-mini>span{object-fit:cover;background:var(--secondary);border-radius:50%;place-items:center;width:36px;height:36px;display:grid}.author-mini>div{flex:1;min-width:0}.author-mini strong{overflow-wrap:anywhere}.author-mini small{color:var(--muted-foreground);margin-top:4px;font-size:10px;display:block}.author-empty{margin-top:24px;font-size:12px}.author-empty>span{background:var(--secondary);border-radius:50%;place-items:center;width:48px;height:48px;margin-bottom:20px;display:grid}.author-empty h3{font-size:21px;line-height:1.4}.author-empty p{color:var(--muted-foreground);margin:12px 0;line-height:1.8}.author-empty a{color:var(--accent);font-weight:600}.reading-note{border-top:1px solid var(--border);margin-top:35px;padding-top:25px}.reading-note>svg{margin:18px 0}.reading-note h2{font-size:27px;line-height:1.15}.reading-note>p:not(.platform-overline){color:var(--muted-foreground);margin:15px 0 22px;font-size:12px;line-height:1.8}.reading-note>div{margin-top:15px;font-size:11px}.reading-note span{color:var(--accent);margin-right:12px}.store-footnote{color:var(--muted-foreground);margin-top:30px;font-size:10px;line-height:1.8}@media (width>=1500px){.book-grid{grid-template-columns:repeat(5,minmax(0,1fr))}}@media (width<=1199px){.store-layout{grid-template-columns:minmax(0,1fr);padding:28px}.store-insights{display:none}.book-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.header-search{max-width:360px}}@media (width<=767px){.platform-header{gap:12px;min-height:72px;padding:12px 16px}.platform-brand{gap:8px;min-width:0;font-size:14px}.platform-brand small,.header-search,.platform-sidebar{display:none}.platform-content{padding-bottom:calc(74px + env(safe-area-inset-bottom));margin-left:0}.platform-mobile-nav{z-index:50;background:var(--background);border-top:1px solid var(--border);padding:8px 6px calc(8px + env(safe-area-inset-bottom));grid-template-columns:repeat(4,minmax(0,1fr));display:grid;position:fixed;bottom:0;left:0;right:0}.platform-mobile-nav a{min-height:48px;color:var(--muted-foreground);flex-direction:column;justify-content:center;align-items:center;gap:5px;font-size:10px;display:flex}.platform-mobile-nav a[aria-current=page]{color:var(--accent);font-weight:700}.store-layout{padding:24px 18px}.store-title h1{font-size:28px}.store-format{display:none}.book-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:25px 18px}.store-search{gap:8px}.store-search .button-primary{padding:.6rem .8rem}.store-tabs button{padding:8px 10px}.library-strip a{margin-left:40px}.platform-brand img{width:36px;height:36px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}