:root { --ajk-blue:#0d6efd; --ajk-deep:#0b4fc7; --ajk-ink:#172033; --ajk-soft:#f5f8ff; }
* { box-sizing:border-box; }
body { margin:0; color:var(--ajk-ink); background:#fff; font-family:"Sarabun",system-ui,-apple-system,"Segoe UI",sans-serif; }
.navbar-brand img { height:48px; width:auto; }
.product-hero { background:linear-gradient(180deg,#f3f7ff 0%,#fff 100%); }
.breadcrumb a { color:#5071a7; text-decoration:none; }
.preview-panel,.purchase-card,.detail-content-card,.document-preview-card { background:#fff; border:1px solid rgba(13,79,199,.12); border-radius:24px; box-shadow:0 18px 50px rgba(22,53,91,.09); }
.preview-panel { padding:14px; }
.preview-main-wrap { position:relative; overflow:hidden; border-radius:18px; background:#edf2f7; aspect-ratio:4/3; }
.preview-main { width:100%; height:100%; object-fit:contain; display:block; }
.preview-watermark { position:absolute; right:14px; bottom:12px; padding:6px 10px; border-radius:999px; color:#fff; background:rgba(10,36,74,.72); font-size:.75rem; pointer-events:none; }
.product-view-count { display:inline-flex; align-items:center; gap:6px; min-height:30px; padding-inline:11px; backdrop-filter:blur(5px); box-shadow:0 5px 16px rgba(7,31,70,.18); }
.product-view-count i { color:#9bd0ff; font-size:.88rem; }
.product-view-count strong { font-size:.82rem; font-variant-numeric:tabular-nums; }
.product-view-count span { color:rgba(255,255,255,.86); font-size:.7rem; }
.preview-thumbs { display:flex; gap:10px; overflow-x:auto; padding-top:12px; }
.preview-thumb { flex:0 0 92px; height:72px; padding:3px; border:2px solid transparent; border-radius:12px; background:#fff; }
.preview-thumb.active { border-color:var(--ajk-blue); }
.preview-thumb img { width:100%; height:100%; object-fit:cover; border-radius:8px; }
.purchase-card { padding:24px; }
.category-chip-list { display:flex; flex-wrap:wrap; gap:7px; }
.category-chip { display:inline-flex; padding:7px 12px; border-radius:999px; background:#e7f0ff; color:var(--ajk-deep); font-weight:700; font-size:.85rem; }
.product-title { font-weight:800; font-size:clamp(1.55rem,2.5vw,2.25rem); line-height:1.25; letter-spacing:-.02em; }
.product-attributes { display:grid; gap:8px; padding:16px 0; border-top:1px solid #edf0f5; border-bottom:1px solid #edf0f5; margin:18px 0; }
.product-attributes div { display:grid; grid-template-columns:105px 1fr; gap:10px; align-items:start; }
.product-attributes span { color:#728096; font-size:.86rem; }
.product-attributes strong { font-size:.92rem; font-weight:700; }
.price-block { display:flex; justify-content:space-between; align-items:end; gap:14px; margin:20px 0; }
.price-block span { color:#728096; }
.price-block strong { color:#dc3545; font-size:1.75rem; line-height:1; }
.ajk-cart-btn { background:#0d6efd; border-color:#0d6efd; color:#fff; font-weight:700; }
.ajk-cart-btn:hover,.ajk-cart-btn:focus { background:#0b5ed7; border-color:#0a58ca; color:#fff; }
.ajk-cart-btn:disabled { background:#e8f0ff; border-color:#c9daf8; color:#3c64a6; opacity:1; }
.ajk-buy-now-btn { background:#f97316; border-color:#f97316; color:#fff; font-weight:800; box-shadow:0 6px 14px rgba(249,115,22,.22); }
.ajk-buy-now-btn:hover,.ajk-buy-now-btn:focus { background:#ea580c; border-color:#ea580c; color:#fff; }
.legacy-preview-link { display:flex; align-items:center; justify-content:center; gap:7px; margin-top:13px; color:#5d6b82; font-size:.88rem; text-decoration:none; }
.legacy-preview-link:hover { color:var(--ajk-blue); }
.share-box { margin-top:22px; padding-top:18px; border-top:1px solid #edf0f5; }
.share-box>span { display:block; margin-bottom:10px; color:#65728a; font-size:.86rem; }
.share-actions { display:flex; flex-wrap:wrap; gap:8px; }
.share-btn { display:inline-flex; align-items:center; gap:6px; border:1px solid #dce3ee; background:#fff; color:#38465d; border-radius:999px; padding:7px 11px; text-decoration:none; font-size:.82rem; }
.share-btn:hover { border-color:var(--ajk-blue); color:var(--ajk-blue); }
.share-btn.facebook { color:#1877f2; }.share-btn.line { color:#06c755; }
.detail-content-card { padding:clamp(22px,4vw,38px); }
.detail-content-card h2,.section-heading h2 { margin:0 0 16px; font-weight:800; }
.detail-description { line-height:1.9; color:#3f4d62; }
.document-preview-card { padding:clamp(20px,3vw,30px); }
.document-preview-heading { display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:10px; }
.document-preview-heading span { color:var(--ajk-blue); font-size:.82rem; font-weight:700; }
.document-preview-heading h2 { margin:2px 0 0; font-size:1.45rem; font-weight:800; }
.document-preview-heading>strong { flex:0 0 auto; padding:6px 10px; border-radius:999px; background:#e8f1ff; color:var(--ajk-deep); font-size:.8rem; }
.document-preview-note { display:flex; align-items:center; gap:7px; margin:0 0 18px; color:#66758b; font-size:.85rem; }
.document-preview-note i { color:#198754; }
.document-preview-stage { position:relative; }
.document-preview-pages { display:flex; overflow-x:auto; overscroll-behavior-x:contain; scroll-behavior:smooth; scroll-snap-type:x mandatory; scrollbar-width:none; border:1px solid #dce3ee; border-radius:16px; background:#e9eef5; box-shadow:0 10px 28px rgba(22,53,91,.08); }
.document-preview-pages::-webkit-scrollbar { display:none; }
.document-preview-page { position:relative; flex:0 0 100%; min-width:0; margin:0; overflow:hidden; scroll-snap-align:start; scroll-snap-stop:always; background:#e9eef5; }
.document-preview-page img { display:block; width:100%; height:auto; background:#fff; user-select:none; -webkit-user-drag:none; }
.document-preview-watermark-filter { position:absolute; z-index:2; inset:-12% -24%; display:grid; grid-template-columns:repeat(3,1fr); grid-auto-rows:1fr; align-items:center; justify-items:center; overflow:hidden; transform:rotate(-24deg) scale(1.12); pointer-events:none; user-select:none; opacity:.2; color:#145fba; }
.document-preview-watermark-filter > span { white-space:nowrap; font-size:clamp(.72rem,2.05vw,1.55rem); font-weight:800; letter-spacing:.03em; text-shadow:0 1px 0 rgba(255,255,255,.75); }
.document-preview-watermark-badge { position:absolute; z-index:3; right:14px; bottom:50px; padding:6px 11px; border-radius:999px; color:#fff; background:rgba(8,42,92,.78); font-size:.72rem; font-weight:700; pointer-events:none; user-select:none; }
.document-preview-page figcaption { position:absolute; z-index:4; right:12px; bottom:12px; padding:5px 9px; border-radius:999px; color:#fff; background:rgba(8,42,92,.82); font-size:.72rem; }
.document-preview-arrow { position:absolute; z-index:2; top:50%; width:44px; height:44px; display:grid; place-items:center; padding:0; border:1px solid rgba(255,255,255,.72); border-radius:50%; color:#fff; background:rgba(8,42,92,.82); box-shadow:0 8px 22px rgba(8,42,92,.24); transform:translateY(-50%); transition:background .2s ease,transform .2s ease; }
.document-preview-arrow:hover,.document-preview-arrow:focus { color:#fff; background:var(--ajk-blue); transform:translateY(-50%) scale(1.05); }
.document-preview-arrow.is-prev { left:12px; }
.document-preview-arrow.is-next { right:12px; }
.document-preview-dots { display:flex; flex-wrap:wrap; align-items:center; justify-content:center; gap:7px; margin-top:14px; }
.document-preview-dot { width:9px; height:9px; padding:0; border:0; border-radius:999px; background:#c4d1e4; transition:width .2s ease,background .2s ease; }
.document-preview-dot.active { width:26px; background:var(--ajk-blue); }
.document-preview-swipe-hint { margin-top:9px; color:#748198; text-align:center; font-size:.76rem; }
.related-sidebar { padding:18px; background:#fff; border:1px solid rgba(13,79,199,.12); border-radius:22px; box-shadow:0 14px 38px rgba(22,53,91,.08); }
.related-sidebar-heading { display:flex; align-items:end; justify-content:space-between; gap:12px; margin-bottom:14px; }
.related-sidebar-heading span { color:var(--ajk-blue); font-size:.76rem; font-weight:700; }
.related-sidebar-heading h2 { margin:2px 0 0; font-size:1.2rem; font-weight:800; }
.related-sidebar-heading>a { color:var(--ajk-blue); font-size:.8rem; font-weight:700; text-decoration:none; white-space:nowrap; }
.related-sidebar-list { display:grid; gap:12px; }
.related-sidebar-card { display:grid; grid-template-columns:108px minmax(0,1fr); gap:12px; padding:10px; border:1px solid #e5eaf2; border-radius:16px; background:#fff; transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.related-sidebar-card:hover { transform:translateY(-2px); border-color:#9fc1f7; box-shadow:0 12px 26px rgba(20,44,79,.11); }
.related-sidebar-card.is-featured { display:block; padding:0; overflow:hidden; border-color:#b9d2fb; background:linear-gradient(145deg,#f3f8ff 0%,#fff 68%); box-shadow:0 12px 30px rgba(13,79,199,.12); }
.related-sidebar-image { position:relative; display:block; overflow:hidden; min-height:102px; border-radius:11px; background:#edf2f7; }
.related-sidebar-card.is-featured .related-sidebar-image { min-height:0; aspect-ratio:16/9; border-radius:0; background:#eaf2ff; }
.related-sidebar-image img { width:100%; height:100%; object-fit:cover; display:block; transition:transform .25s ease,filter .25s ease; }
.related-sidebar-card.is-featured .related-sidebar-image img { object-fit:contain; }
.related-image-hover { position:absolute; inset:auto 10px 10px; display:flex; align-items:center; justify-content:center; gap:6px; padding:7px 10px; border-radius:999px; color:#fff; background:rgba(8,42,92,.88); opacity:0; transform:translateY(5px); transition:opacity .2s ease,transform .2s ease; font-size:.76rem; font-weight:700; }
.related-recommend-badge,.related-free-badge { position:absolute; z-index:2; top:10px; display:inline-flex; align-items:center; gap:5px; color:#fff; box-shadow:0 7px 18px rgba(8,42,92,.2); font-weight:800; }
.related-recommend-badge { left:10px; padding:7px 10px; border-radius:999px; background:#0d6efd; font-size:.76rem; }
.related-free-badge { right:10px; width:50px; height:50px; justify-content:center; border:3px solid #fff; border-radius:50%; background:#e11d2e; font-size:1rem; transform:rotate(5deg); }
.related-sidebar-image:hover img { transform:scale(1.045); filter:brightness(.92); }
.related-sidebar-image:hover .related-image-hover,.related-sidebar-image:focus .related-image-hover { opacity:1; transform:none; }
.related-sidebar-body { min-width:0; display:flex; flex-direction:column; }
.related-sidebar-card.is-featured .related-sidebar-body { padding:15px; }
.related-sidebar-body small { color:#6f7f96; font-size:.72rem; font-weight:600; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.related-sidebar-body h3 { margin:3px 0 6px; font-size:.9rem; line-height:1.38; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.related-sidebar-card.is-featured .related-sidebar-body h3 { margin-top:5px; font-size:1.02rem; -webkit-line-clamp:3; }
.related-sidebar-body h3 a { color:var(--ajk-ink); text-decoration:none; }
.related-sidebar-body h3 a:hover { color:var(--ajk-blue); }
.related-sidebar-body p { margin:0 0 8px; color:#65748a; font-size:.78rem; line-height:1.5; }
.related-sidebar-body>strong { color:#dc3545; font-size:.9rem; }
.related-sidebar-card.is-free .related-sidebar-body>strong { color:#198754; }
.related-sidebar-actions { display:flex; flex-wrap:wrap; align-items:center; gap:6px; margin-top:auto; padding-top:8px; }
.related-sidebar-actions .btn { padding:.3rem .52rem; font-size:.72rem; font-weight:700; }
.related-sidebar-card.is-featured .related-sidebar-actions .btn:first-child { flex:1 1 auto; }
.related-sidebar-mobile-hint { display:none; }
.related-sidebar-more { display:flex; align-items:center; justify-content:center; gap:7px; margin-top:13px; padding:10px; border-radius:12px; color:var(--ajk-blue); background:#f1f6ff; font-size:.8rem; font-weight:700; text-decoration:none; }
.related-sidebar-more:hover { color:#fff; background:var(--ajk-blue); }
.related-section { background:#f5f8fc; }
.section-heading { display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:22px; }
.section-heading span { color:var(--ajk-blue); font-size:.85rem; font-weight:700; }.section-heading h2 { margin:4px 0 0; }
.section-heading>a { color:var(--ajk-blue); text-decoration:none; white-space:nowrap; }
.related-card { overflow:hidden; background:#fff; border:1px solid #e5eaf2; border-radius:18px; box-shadow:0 10px 28px rgba(20,44,79,.07); }
.related-image { position:relative; display:block; overflow:hidden; aspect-ratio:4/3; background:#edf2f7; }
.related-image img { width:100%; height:100%; object-fit:cover; transition:transform .25s ease; }
.related-image span { position:absolute; inset:auto 10px 10px; padding:7px; border-radius:999px; text-align:center; color:#fff; background:rgba(13,79,199,.9); opacity:0; transition:opacity .2s ease; }
.related-image:hover img { transform:scale(1.04); }.related-image:hover span { opacity:1; }
.related-body { padding:15px; }.related-body small { color:#748198; }.related-body h3 { margin:6px 0 10px; font-size:1rem; line-height:1.45; }
.related-body h3 a { color:var(--ajk-ink); text-decoration:none; }.related-body h3 a:hover { color:var(--ajk-blue); }.related-body>strong { color:#dc3545; }
.detail-toast { position:fixed; right:18px; bottom:18px; z-index:2000; max-width:min(360px,calc(100vw - 36px)); padding:12px 16px; border-radius:12px; background:#172033; color:#fff; box-shadow:0 14px 36px rgba(0,0,0,.2); opacity:0; transform:translateY(10px); pointer-events:none; transition:.2s ease; }
.detail-toast.show { opacity:1; transform:none; }
@media(max-width:991.98px){ .related-image-hover{opacity:1;transform:none}.related-sidebar-list{grid-template-columns:repeat(2,minmax(0,1fr))}.related-sidebar-card.is-featured{grid-column:1/-1}.related-sidebar-card.is-featured .related-sidebar-image{aspect-ratio:2/1} }
@media(max-width:767.98px){ .related-sidebar{overflow:hidden}.related-sidebar-heading>a{display:none}.related-sidebar-list{display:flex; gap:12px; overflow-x:auto; margin-right:-18px; padding:1px 18px 9px 1px; scroll-snap-type:x mandatory; scrollbar-width:none}.related-sidebar-list::-webkit-scrollbar{display:none}.related-sidebar-card,.related-sidebar-card.is-featured{display:block; flex:0 0 82vw; max-width:340px; grid-column:auto; padding:0; overflow:hidden; scroll-snap-align:start}.related-sidebar-card .related-sidebar-image,.related-sidebar-card.is-featured .related-sidebar-image{min-height:0; aspect-ratio:16/10; border-radius:0}.related-sidebar-card .related-sidebar-image img{object-fit:contain}.related-sidebar-card .related-sidebar-body{padding:14px}.related-sidebar-card .related-sidebar-body h3{font-size:.96rem;-webkit-line-clamp:2}.related-sidebar-card:not(.is-featured) .related-sidebar-body p{display:none}.related-sidebar-mobile-hint{display:block;margin-top:2px;color:#748198;text-align:center;font-size:.74rem}.related-sidebar-more{margin-top:9px} }
@media(max-width:575.98px){ .purchase-card{padding:18px;border-radius:18px}.preview-panel,.document-preview-card{border-radius:18px}.document-preview-card{padding:16px}.document-preview-heading h2{font-size:1.25rem}.document-preview-arrow{width:38px;height:38px}.document-preview-arrow.is-prev{left:7px}.document-preview-arrow.is-next{right:7px}.share-btn span{display:none}.share-btn{width:40px;height:40px;justify-content:center;padding:0}.product-attributes div{grid-template-columns:95px 1fr} }