.product-intro{background:linear-gradient(135deg,var(--ow-warm),var(--ow-primary-tint))}.breadcrumb{display:flex;gap:.6rem;flex-wrap:wrap;margin-bottom:1.2rem;font-size:.9rem}.product-library,.product-compare{padding:52px 0 92px;background:var(--ow-bg-soft)}.product-boundary{padding:18px 20px;margin-bottom:28px;border-left:5px solid var(--ow-amber-deep);background:#fff;border-radius:8px;box-shadow:var(--shadow)}.product-tools{display:grid;grid-template-columns:minmax(0,2fr) minmax(220px,1fr);gap:16px;align-items:end;margin:0 0 16px}.product-tools label,.product-selectors label{display:grid;gap:7px;font-weight:700}.product-tools input,.product-tools select,.product-selectors select{width:100%;min-height:50px;padding:10px 12px;border:1px solid var(--ow-line);border-radius:8px;background:#fff;color:var(--ow-ink);font:inherit}.product-count{color:var(--ow-ink-soft);font-weight:700}.product-shelf{padding:28px 0 42px;border-top:1px solid var(--ow-line)}.product-shelf>h2{font-size:1.45rem}.product-books{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}.product-card{min-width:0}.product-cover-button{display:block;width:100%;padding:0;border:0;border-radius:8px;background:#d7e5ec;box-shadow:0 12px 25px rgba(15,42,67,.14);overflow:hidden}.product-cover-button img{aspect-ratio:3/4;object-fit:cover;object-position:top}.product-card h3{margin:16px 0 5px;font-size:1.08rem;overflow-wrap:anywhere}.product-card__meta{margin:0 0 8px;color:var(--ow-ink-soft);font-size:.87rem}.product-card__status{font-size:.82rem;line-height:1.45;color:var(--ow-ink-soft)}.product-card__actions{display:flex;flex-wrap:wrap;gap:8px}.product-card__actions button,.product-reader__links button,.product-reader__links a,.product-compare__actions button,.product-compare__actions a{min-height:42px;padding:8px 12px;border:1px solid var(--ow-primary);border-radius:7px;background:#fff;color:var(--ow-primary);font:inherit;font-size:.86rem;font-weight:700;text-decoration:none}.product-card__actions .is-selected{background:var(--ow-primary);color:#fff}.product-guides{padding-top:44px;border-top:2px solid var(--ow-line)}.product-guides>.library-section{padding:12px 0}.pair-tray{position:fixed;z-index:20;left:50%;bottom:20px;transform:translateX(-50%);width:min(720px,calc(100% - 32px));display:flex;justify-content:space-between;align-items:center;gap:18px;padding:12px 16px;background:var(--ow-ink);color:#fff;border-radius:12px;box-shadow:0 14px 38px rgba(15,42,67,.32)}.pair-tray span{display:grid}.pair-tray small{color:#dbe8f3;overflow-wrap:anywhere}.pair-tray>div{display:flex;gap:8px;align-items:center}.pair-tray button{color:#fff;border:0;background:transparent;font:inherit;text-decoration:underline}.pair-tray .button{min-height:42px;padding:8px 14px}.product-reader{width:min(1180px,calc(100% - 32px));max-height:94vh;padding:0;border:0;border-radius:12px;color:var(--ow-ink);box-shadow:0 24px 70px rgba(0,0,0,.3)}.product-reader::backdrop{background:rgba(8,27,42,.72)}.product-reader__head{position:sticky;top:0;z-index:4;display:flex;justify-content:space-between;gap:20px;padding:18px 22px;background:#fff;border-bottom:1px solid var(--ow-line)}.product-reader__head h2{margin-bottom:5px;font-size:1.55rem}.product-reader__head p{margin-bottom:0}.product-reader__close{border:0;background:transparent;font-size:2rem}.product-reader__tabs,.product-reader__controls,.product-reader__links{display:flex;justify-content:center;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 18px}.product-reader__controls{position:sticky;bottom:0;z-index:5;background:#fff;border-top:1px solid var(--ow-line)}.product-reader__links{position:relative;z-index:5;background:#fff}.product-reader__tabs button,.product-reader__tabs a,.product-reader__controls button{min-height:42px;padding:8px 12px;border:1px solid var(--ow-line);border-radius:7px;background:#fff;color:var(--ow-primary);font:inherit;font-weight:700;text-decoration:none}.product-book{height:min(68vh,780px);margin:auto;background:#dbe6ed}.product-page{background:#fff}.product-page img{width:100%;height:100%;object-fit:contain}.product-reader__text{max-height:62vh;margin:0;padding:24px;overflow:auto;white-space:pre-wrap;font:1rem/1.6 system-ui,sans-serif}.product-selectors{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:end;margin:30px 0 16px}.product-selectors>button{min-width:80px;min-height:50px;border:1px solid var(--ow-line);border-radius:8px;background:#fff}.product-compare__actions{display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap;margin-bottom:24px}.product-compare__incomplete{padding:30px;text-align:center;background:#fff;border:1px dashed var(--ow-line);border-radius:10px}.product-comparison{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}.product-compare-card{min-width:0;background:#fff;border:1px solid var(--ow-line);border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}.product-compare-card__visual{height:250px;background:#dce9ef}.product-compare-card__visual img{width:100%;height:100%;object-fit:contain;object-position:top}.product-compare-card__body{padding:24px}.product-compare-card__body h2{font-size:1.55rem}.product-facts{margin:24px 0}.product-fact{padding:18px 0;border-top:1px solid var(--ow-line)}.product-fact dt{font-weight:750}.product-fact dd{margin:7px 0;color:var(--ow-ink-soft)}.product-cite{min-height:38px;border:0;background:transparent;color:var(--ow-primary);padding:4px 0;text-decoration:underline}.product-excerpt{margin:20px 0;padding:18px;border-left:4px solid var(--ow-primary);background:var(--ow-primary-tint);font-size:.88rem}.product-excerpt p{margin:.5rem 0 0}.prepared-pair{margin-top:36px;padding:28px;background:#fff;border-radius:12px;border:1px solid var(--ow-line)}
@media(max-width:900px){.product-books{grid-template-columns:repeat(2,minmax(0,1fr))}.product-comparison{grid-template-columns:1fr}.product-compare-card{display:grid;grid-template-columns:180px minmax(0,1fr)}.product-compare-card__visual{height:auto}.product-compare-card__visual img{height:100%}}
@media(max-width:719px){.product-library,.product-compare{padding:34px 0 110px}.product-tools,.product-selectors{grid-template-columns:1fr}.product-books{gap:18px 14px}.product-card h3{font-size:.98rem}.product-card__status{font-size:.76rem}.product-card__actions{display:grid}.pair-tray{bottom:10px;align-items:flex-start}.pair-tray>div{display:grid}.product-reader{width:100%;max-width:none;max-height:100vh;height:100vh;border-radius:0}.product-reader__head{padding:13px 16px}.product-reader__head h2{font-size:1.15rem}.product-reader__head .eyebrow{margin-bottom:4px}.product-reader__head [data-reader-meta]{font-size:.73rem}.product-book{height:58vh}.product-reader__tabs{justify-content:flex-start;overflow:visible;flex-wrap:wrap}.product-reader__tabs>*{white-space:normal}.product-compare-card{display:block}.product-compare-card__visual{height:220px}.product-selectors>button{width:100%}.product-compare__actions{display:grid}.product-compare__actions>*{width:100%;text-align:center}.product-compare-card__body{padding:18px}}
@media(max-width:390px){.product-books{grid-template-columns:1fr}.product-cover-button{max-width:260px}.product-card{display:grid;justify-items:start}.pair-tray{font-size:.82rem}}
@media print{.preview-banner,.site-header,footer,.product-tools,.product-count,.product-compare__actions,.prepared-pair,.pair-tray,.product-reader,.product-boundary{display:none!important}.product-compare{padding:0;background:#fff}.product-comparison{display:grid;grid-template-columns:1fr 1fr;gap:12px}.product-compare-card{box-shadow:none}.product-compare-card__visual{height:150px}.product-compare-card__body{padding:12px}.product-fact{break-inside:avoid}}

/* Reserve the shelf area until the catalog renders so the guides below do not jump. */
[data-product-shelves]:empty{min-height:100vh}
/* Phone comparison: question-by-question rows instead of two long stacked cards. */
.product-rows{display:none}
@media screen and (max-width:900px){.product-rows{display:block;border:1px solid var(--ow-line);border-radius:12px;background:#fff;padding:4px 18px}.product-row{padding:14px 0;border-top:1px solid var(--ow-line)}.product-row:first-child{border-top:0}.product-row h3{font-size:1rem;margin:0 0 8px}.product-row__cell{display:grid;grid-template-columns:minmax(0,7.5rem) minmax(0,1fr);gap:4px 12px;margin:6px 0}.product-row__cell p{margin:0;font-size:.92rem;line-height:1.5}.product-row__name{font-weight:700;color:var(--ow-ink)}.product-compare-card .product-facts{display:none}}
@media screen and (max-width:390px){.product-row__cell{grid-template-columns:1fr;gap:0}}
.pair-tray .button{display:inline-block;white-space:nowrap;line-height:26px;text-align:center}.pair-tray .button span{display:inline}
.prepared-pair .small{margin:12px 0}
.product-fact dd .product-cite{display:block;margin-top:6px}
.product-row__cell .product-cite{display:block;margin-top:2px}