.bk-root{background:var(--st-bg);color:var(--st-ink)}.bk-eyebrow{font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--st-muted)}.bk-h2{font-family:var(--st-display);font-size:clamp(24px,3vw,34px);line-height:1.3;margin:0 0 24px}.bk-price{display:inline-flex;align-items:baseline;gap:8px}.bk-price strong{color:var(--st-primary);font-size:17px}.bk-price del{color:var(--st-muted);font-size:12px}.bk-root button:disabled{opacity:.5;cursor:not-allowed}.bk-root a:focus-visible,.bk-root button:focus-visible{outline:2px solid var(--st-primary);outline-offset:3px}.bk-kitab-hero{display:flex;flex-direction:column;align-items:center;text-align:center;padding:56px 0 32px}.bk-kitab-hero h1{font-family:var(--st-display);font-size:clamp(30px,4vw,50px);line-height:1.25;max-width:720px;margin:14px 0}.bk-kitab-hero p{max-width:520px;color:var(--st-muted);line-height:1.9;font-size:15px}.bk-kitab-arch{width:min(340px,80%);aspect-ratio:3/4;margin:32px 0 28px;border-radius:999px 999px 12px 12px;overflow:hidden;border:6px double var(--st-accent);box-shadow:0 0 0 10px var(--st-tint)}.bk-pill-cta{display:inline-flex;align-items:center;gap:10px;background:var(--st-primary);color:#fff;padding:13px 28px;border-radius:999px;font-weight:600;font-size:14px}.bk-kitab-arches{display:flex;flex-wrap:wrap;justify-content:center;gap:22px;padding:36px 0}.bk-arch-tile{flex:0 0 clamp(130px,18%,210px);display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;font-size:13px}.bk-arch-img{width:100%;aspect-ratio:3/4;border-radius:999px 999px 8px 8px;overflow:hidden;background:var(--st-tint);border:2px solid var(--st-border)}.bk-kitab-band{background:var(--st-primary);color:#fff;padding:44px 0;text-align:center;background-image:repeating-conic-gradient(from 45deg at 50% 50%,rgba(255,255,255,.05) 0 25%,transparent 0 50%);background-size:36px 36px}.bk-kitab-band h2{font-family:var(--st-display);font-size:26px;margin:10px 0}.bk-kitab-band p{max-width:620px;margin:0 auto;line-height:1.9;opacity:.85;font-size:14px}.bk-kitab-band svg{margin:0 auto;color:var(--st-accent)}.bk-shelf-section{padding:44px 0 8px}.bk-shelf{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding:8px 4px 30px;position:relative;scrollbar-width:thin}.bk-shelf:after{content:"";position:absolute;left:0;right:0;bottom:12px;height:12px;background:linear-gradient(#a16207,#713f12);border-radius:2px;box-shadow:0 6px 10px rgba(0,0,0,.18);z-index:0}.bk-shelf-book{flex:0 0 clamp(150px,22%,210px);scroll-snap-align:start;display:flex;flex-direction:column;gap:6px;position:relative;z-index:1}.bk-shelf-cover{display:block;aspect-ratio:2/3;overflow:hidden;border-radius:2px 6px 6px 2px;box-shadow:-5px 6px 12px rgba(0,0,0,.25);border-left:5px solid rgba(0,0,0,.25)}.bk-shelf-book h3{font-size:13px;line-height:1.5;min-height:39px;margin-top:8px}.bk-shelf-add{align-self:flex-start;font-size:12px;font-weight:600;color:var(--st-primary);display:inline-flex;gap:4px;align-items:center;padding:4px 0}.bk-campus-hero{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;padding:48px 0}.bk-paper{background:#fffef6 repeating-linear-gradient(transparent 0 31px,#bcd2f0 31px 32px);padding:32px 32px 32px 64px;border-left:3px solid #f08a8a;box-shadow:0 8px 24px rgba(0,0,0,.08);color:#1b2336;border-radius:4px}.bk-paper h1{font-family:var(--st-display);font-size:clamp(28px,3.4vw,44px);line-height:1.3;margin:14px 0}.bk-paper p{line-height:2;font-size:14px;max-width:460px;color:#4b5568}.bk-stamp{display:inline-block;border:2px dashed var(--st-accent);color:var(--st-accent);padding:3px 12px;font-weight:700;font-size:12px;transform:rotate(-2deg);border-radius:4px}.bk-marker-cta{display:inline-flex;align-items:center;gap:8px;margin-top:14px;background:linear-gradient(transparent 55%,var(--st-accent) 55%);font-weight:700;padding:2px 6px;font-size:15px}.bk-polaroid{position:relative;background:#fff;padding:14px 14px 48px;box-shadow:0 10px 28px rgba(0,0,0,.18);transform:rotate(3deg);aspect-ratio:1/1.1}.bk-polaroid>img,.bk-polaroid>picture{display:block;width:100%;height:calc(100% - 0px)}.bk-polaroid>span{position:absolute;bottom:14px;left:0;right:0;text-align:center;font-weight:700;font-size:13px;color:#333}.bk-checklist{padding:8px 0 32px}.bk-checklist ul{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.bk-checklist a{display:flex;align-items:center;gap:12px;padding:14px 16px;border:2px solid var(--st-ink);border-radius:10px;font-weight:600;font-size:14px;box-shadow:3px 3px 0 var(--st-ink);background:var(--st-surface,#fff)}.bk-checklist a svg:last-child{margin-left:auto}.bk-check-0 a{background:#fff3c4}.bk-check-1 a{background:#d9f2e6}.bk-check-2 a{background:#fde0e0}.bk-check-3 a{background:#dbe8fb}.bk-box{display:grid;place-items:center;width:22px;height:22px;border:2px solid var(--st-ink);border-radius:5px;background:#fff;color:var(--st-primary)}.bk-sticker-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px 20px;padding:12px 0 36px}.bk-sticker{position:relative;background:#fff;padding:14px;border-radius:6px;box-shadow:0 4px 14px rgba(0,0,0,.1)}.bk-tilt-0{transform:rotate(-1.2deg)}.bk-tilt-1{transform:rotate(.8deg)}.bk-tilt-2{transform:rotate(-.4deg)}.bk-tape{position:absolute;top:-9px;left:50%;width:64px;height:18px;margin-left:-32px;background:rgba(245,158,11,.55);transform:rotate(-3deg)}.bk-sticker-img{display:block;aspect-ratio:1;background:var(--st-tint);border-radius:4px;padding:10px;margin-bottom:10px}.bk-sticker h3{font-size:13px;line-height:1.5;min-height:39px}.bk-sticker-foot{display:flex;align-items:center;justify-content:space-between;margin-top:8px}.bk-round-add{display:inline-flex;align-items:center;gap:4px;background:var(--st-ink);color:#fff;border-radius:999px;padding:6px 12px;font-size:11px;font-weight:700}.bk-sticker-wish{position:absolute;top:8px;right:8px}.bk-bundle{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:center;padding:0 0 40px;font-weight:600;font-size:13px}.bk-bundle span{display:flex;align-items:center;gap:6px;color:var(--st-primary)}.bk-rang-hero{position:relative;min-height:440px;display:flex;align-items:flex-end;overflow:hidden;background:var(--st-ink)}.bk-rang-hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.78}.bk-rang-hero-copy{position:relative;color:#fff;max-width:1280px;width:100%;margin:0 auto;padding:64px 24px 40px;background:linear-gradient(transparent,rgba(0,0,0,.65))}.bk-rang-hero-copy h1{font-family:var(--st-display);font-size:clamp(30px,5vw,60px);line-height:1.15;max-width:760px;margin:14px 0}.bk-rang-hero-copy p{max-width:520px;opacity:.9;line-height:1.8;font-size:15px}.bk-swatches{display:flex;gap:8px}.bk-swatches i{width:26px;height:26px;border-radius:50%;border:2px solid #fff;display:block}.bk-rang-cta{display:inline-flex;align-items:center;gap:10px;margin-top:20px;background:#fff;color:var(--st-ink);padding:12px 24px;font-weight:700;font-size:14px;border-radius:2px}.bk-rang-chips{display:flex;flex-wrap:wrap;gap:10px;padding:28px 0}.bk-rang-chips a{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--st-border);background:var(--st-surface,#fff);padding:8px 16px;border-radius:999px;font-size:13px;font-weight:600}.bk-rang-chips i{width:12px;height:12px;border-radius:50%;display:block}.bk-masonry{column-count:4;column-gap:18px;padding-bottom:20px}.bk-tile{break-inside:avoid;margin-bottom:18px;position:relative;background:var(--st-surface,#fff);overflow:hidden;border-radius:4px}.bk-tile-img{display:block;overflow:hidden;background:var(--st-tint)}.bk-tile-0 .bk-tile-img{aspect-ratio:3/4}.bk-tile-1 .bk-tile-img{aspect-ratio:1}.bk-tile-2 .bk-tile-img{aspect-ratio:4/5}.bk-tile-3 .bk-tile-img{aspect-ratio:5/4}.bk-tile-img img{transition:transform .4s}.bk-tile:hover .bk-tile-img img{transform:scale(1.06)}.bk-tile-cap{padding:12px 14px 14px}.bk-tile-cap h3{font-size:13px;line-height:1.5}.bk-tile-cap>div{display:flex;align-items:center;justify-content:space-between;margin-top:6px}.bk-tile-add{font-size:11px;font-weight:700;display:inline-flex;align-items:center;gap:3px;color:var(--st-primary);border:1px solid var(--st-primary);padding:4px 10px;border-radius:999px}.bk-rang-quote{font-family:var(--st-display);font-size:clamp(18px,2.2vw,26px);line-height:1.7;text-align:center;max-width:760px;margin:20px auto 56px;color:var(--st-muted);font-style:italic}.bk-desk-top{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;padding:40px 0 20px;align-items:start}.bk-desk-top h1{font-size:clamp(26px,3vw,40px);line-height:1.25;margin:10px 0;font-weight:800;letter-spacing:-.01em}.bk-desk-top p{color:var(--st-muted);line-height:1.8;font-size:14px;max-width:520px}.bk-desk-badges{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:16px;font-size:12px;font-weight:600;color:var(--st-primary)}.bk-desk-badges li{display:flex;align-items:center;gap:5px}.bk-quick{border:1px solid var(--st-border);background:var(--st-surface,#fff);border-radius:8px;overflow:hidden}.bk-quick h2{padding:14px 18px;background:var(--st-primary);color:#fff;font-size:14px;font-weight:700}.bk-quick a{display:flex;justify-content:space-between;align-items:center;padding:12px 18px;border-top:1px solid var(--st-border);font-size:13px}.bk-quick .bk-quick-all,.bk-quick a:hover{background:var(--st-tint)}.bk-quick .bk-quick-all{font-weight:700;color:var(--st-primary);justify-content:center}.bk-sheet-wrap{padding:24px 0 44px;overflow-x:auto}.bk-sheet{width:100%;border-collapse:collapse;font-size:13px;background:var(--st-surface,#fff);border:1px solid var(--st-border)}.bk-sheet th{text-align:left;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--st-muted);padding:10px 14px;background:var(--st-tint);border-bottom:2px solid var(--st-primary)}.bk-sheet td{padding:10px 14px;border-bottom:1px solid var(--st-border);vertical-align:middle}.bk-sheet-row:nth-child(2n){background:rgba(0,0,0,.018)}.bk-sheet-sku{font:12px monospace}.bk-sheet-cat,.bk-sheet-sku{color:var(--st-muted)}.bk-sheet-item{display:flex;align-items:center;gap:12px;font-weight:600}.bk-sheet-thumb{flex:0 0 48px;width:48px;height:48px;background:var(--st-tint);padding:4px;border-radius:4px}.bk-sheet-act{text-align:right}.bk-sheet-add{display:inline-flex;align-items:center;gap:4px;background:var(--st-primary);color:#fff;font-size:12px;font-weight:600;padding:7px 14px;border-radius:4px;white-space:nowrap}@media(max-width:900px){.bk-masonry{column-count:3}.bk-sticker-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:640px){.bk-masonry{column-count:2;column-gap:12px}.bk-arch-tile{flex-basis:calc(50% - 14px)}.bk-campus-hero,.bk-desk-top{grid-template-columns:1fr}.bk-paper{padding:24px 20px 24px 44px}.bk-polaroid{max-width:300px;margin:0 auto}.bk-checklist ul{grid-template-columns:1fr}.bk-sticker-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 12px}.bk-sheet td:first-child,.bk-sheet td:nth-child(3),.bk-sheet th:first-child,.bk-sheet th:nth-child(3){display:none}.bk-rang-hero{min-height:380px}}@media(prefers-reduced-motion:reduce){.bk-tile-img img{transition:none}}