.rbt-app,.rbt-app *{box-sizing:border-box}.rbt-app{--navy:#0a2540;--navy2:#123a63;--gold:#c99a3d;--line:#e2e8f0;--soft:#f4f7fb;font-family:Sarabun,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#1c2b3a;max-width:1100px;margin:24px auto}.rbt-card,.rbt-quiz{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 8px 30px rgba(10,37,64,.08);padding:22px}.rbt-center{text-align:center}.rbt-hero{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;border-radius:22px;padding:28px}.rbt-hero h2{color:#fff;margin:4px 0}.rbt-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}.rbt-stats div{background:#fff;border-radius:16px;padding:18px;text-align:center;border:1px solid var(--line)}.rbt-stats b,.rbt-stats span{display:block}.rbt-stats b{font-size:28px;color:var(--navy)}.rbt-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.rbt-lesson{padding:0;overflow:hidden;text-decoration:none;color:inherit}.rbt-lesson img{width:100%;height:180px;object-fit:cover}.rbt-lesson>div{padding:18px}.rbt-lesson h3{margin:0 0 8px}.rbt-lesson span{color:var(--navy);font-weight:700}.rbt-quiz fieldset{border:0;border-bottom:1px solid var(--line);padding:20px 0}.rbt-quiz legend{font-weight:700;margin-bottom:12px;color:var(--navy)}.rbt-quiz label{display:block;background:var(--soft);padding:12px;border-radius:10px;margin:8px 0;cursor:pointer}.rbt-btn{background:var(--navy);color:#fff;border:0;border-radius:999px;padding:13px 28px;font-weight:700;font-size:16px;cursor:pointer}.rbt-btn:hover{background:var(--navy2)}.rbt-result{margin-top:15px;padding:14px;border-radius:12px}.rbt-result:empty{display:none}.rbt-result.is-pass{background:#e8faed;color:#087a31}.rbt-result.is-fail{background:#fff0f0;color:#a72727}.rbt-loader{width:38px;height:38px;border:4px solid var(--line);border-top-color:var(--navy);border-radius:50%;animation:rbtspin .8s linear infinite;margin:auto}.rbt-search,.rbt-kb-form{display:flex;gap:10px;margin-bottom:18px}.rbt-search input,.rbt-kb-form input{flex:1;min-width:0;border:1px solid var(--line);border-radius:12px;padding:13px 14px;font:inherit}.rbt-product-detail section{border-top:1px solid var(--line);padding:12px 0}.rbt-product-detail section h3{margin:0 0 6px}.rbt-kb-result{margin-top:16px}.rbt-answer{background:var(--soft);border-left:4px solid var(--navy);padding:14px;border-radius:8px;margin-bottom:8px;line-height:1.75}@keyframes rbtspin{to{transform:rotate(360deg)}}.rbt-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:16px;font-size:14px;color:#5c6b7a}.rbt-crumbs a{color:var(--navy);text-decoration:none;font-weight:600}.rbt-crumbs a:hover{text-decoration:underline}.rbt-crumbs b{color:#17212b}.rbt-crumbs-sep{color:#b7c0cc}
.rbt-cat-card{padding:0;display:flex;flex-direction:column}.rbt-cat-card>div{padding:18px}.rbt-cat-card h3{margin:0 0 8px}.rbt-brand-card{align-items:center;justify-content:center;text-align:center;min-height:110px}.rbt-brand-card>div{padding:22px}.rbt-count-badge{display:inline-block;background:var(--soft);color:var(--navy);font-weight:700;font-size:13px;border-radius:999px;padding:4px 12px}
.rbt-product-image{text-align:center;margin-bottom:16px}.rbt-product-image img{max-height:320px;object-fit:contain;border-radius:14px;background:var(--soft)}

/* ===== หน้ารายละเอียดสินค้า โทนกรม-ขาว ===== */
.rbt-product-detail{--pd-navy:#0a2540;--pd-navy2:#123a63;--pd-gold:#c99a3d;--pd-line:#e2e8f0;background:#fff;border-radius:20px;overflow:hidden;border:1px solid var(--pd-line);box-shadow:0 10px 34px rgba(10,37,64,.1)}
.rbt-product-hero{background:linear-gradient(135deg,var(--pd-navy),var(--pd-navy2));color:#fff;padding:36px;display:flex;gap:28px;align-items:center}
.rbt-product-hero-img{flex:0 0 auto;width:180px;height:180px;border-radius:16px;overflow:hidden;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center}
.rbt-product-hero-img img{width:100%;height:100%;object-fit:contain}
.rbt-product-hero-text{flex:1;min-width:0}
.rbt-brand-badge{display:inline-block;background:var(--pd-gold);color:#fff;font-weight:700;font-size:12px;letter-spacing:.06em;text-transform:uppercase;border-radius:999px;padding:5px 14px;margin-bottom:12px}
.rbt-product-hero h1{color:#fff;margin:0 0 10px;font-size:clamp(22px,3vw,32px);line-height:1.3}
.rbt-product-usage{color:#dce7f2;margin:0;line-height:1.7}
.rbt-product-body{padding:32px}
.rbt-price-box{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:26px}
.rbt-price-item{flex:1;min-width:160px;background:#f4f7fb;border:1px solid var(--pd-line);border-radius:14px;padding:16px 20px}
.rbt-price-item small{display:block;color:#5d6f85;font-weight:700;letter-spacing:.03em;margin-bottom:4px}
.rbt-price-item b{display:block;font-size:22px;color:var(--pd-navy)}
.rbt-price-special{background:linear-gradient(135deg,var(--pd-navy),var(--pd-navy2));border-color:var(--pd-navy)}
.rbt-price-special small{color:#cddcec}.rbt-price-special b{color:#fff}
.rbt-spec-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-bottom:28px}
.rbt-spec-card{border:1px solid var(--pd-line);border-left:4px solid var(--pd-navy);border-radius:12px;padding:18px 20px;background:#fbfcfe}
.rbt-spec-card h3{margin:0 0 8px;color:var(--pd-navy);font-size:15px}
.rbt-spec-card p{margin:0;line-height:1.75;color:#33445a;white-space:pre-line}
.rbt-product-detail .rbt-buttons{display:flex;gap:12px;flex-wrap:wrap}
.rbt-product-detail .rbt-action{display:inline-flex;align-items:center;justify-content:center;padding:13px 24px;border:0;border-radius:10px;background:var(--pd-navy);color:#fff!important;text-decoration:none;font-weight:700}
.rbt-product-detail .rbt-action:hover{background:var(--pd-navy2)}
.rbt-product-detail .rbt-outline{background:#fff;color:var(--pd-navy)!important;border:2px solid var(--pd-navy)}
.rbt-product-detail .rbt-outline:hover{background:var(--pd-navy);color:#fff!important}

/* ===== โปรโมชั่น ===== */
.rbt-promo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.rbt-promo-card{display:flex;flex-direction:column;background:#fff;border:1px solid #e4ebee;border-radius:16px;overflow:hidden;text-decoration:none;color:inherit;box-shadow:0 8px 24px rgba(10,37,64,.08)}
.rbt-promo-card img{width:100%;height:160px;object-fit:cover}
.rbt-promo-noimg{width:100%;height:160px;display:flex;align-items:center;justify-content:center;font-size:42px;background:linear-gradient(135deg,#0a2540,#123a63)}
.rbt-promo-card>div{padding:16px}
.rbt-promo-card h3{margin:0 0 8px;color:#0a2540}
.rbt-promo-end{display:inline-block;margin-top:8px;font-size:12px;font-weight:700;color:#a72727;background:#fff0f0;border-radius:999px;padding:3px 10px}

/* ===== AI badge ในผลค้นหา ===== */
.rbt-ai-badge{display:inline-block;background:#0a2540;color:#fff;font-size:11px;font-weight:700;letter-spacing:.04em;border-radius:999px;padding:3px 10px;margin-right:8px;vertical-align:middle}

@media(max-width:767px){.rbt-app{margin:12px}.rbt-grid{grid-template-columns:1fr}.rbt-stats{grid-template-columns:1fr}.rbt-card,.rbt-quiz{padding:16px}.rbt-search,.rbt-kb-form{flex-direction:column}.rbt-search .rbt-btn,.rbt-kb-form .rbt-btn{width:100%}.rbt-product-hero{flex-direction:column;text-align:center;padding:26px}.rbt-product-hero-img{width:140px;height:140px}.rbt-product-body{padding:22px}.rbt-price-box{flex-direction:column}}
@media(max-width:900px){.rbt-cat-grid{grid-template-columns:repeat(2,1fr)}}