.qb-inner{--qbi-muted:#646874;--qbi-line:#e2e2e2;--qbi-panel:#064fc2;--qbi-surface:#f0f0f0;--qbi-ink:#252934;--qbi-accent:#ec2025}
.qb-inner :where(button,input,textarea){font:inherit}
.qb-inner :where(a,button,input,textarea,summary):focus-visible{outline:3px solid var(--qbi-panel);outline-offset:4px}
.qb-inner :where(button,summary){cursor:pointer}
.qb-inner :where(h1,h2,h3){font-family:'QB Montserrat',Arial,sans-serif;line-height:1.12}
.qb-inner .qb-container{width:min(1400px,calc(100% - 80px))}
.qb-inner .qb-header{border-bottom:1px solid var(--qbi-line)}
.qb-inner .qb-logo img{width:131px;height:81px;margin:0;object-fit:contain}
.qb-inner .qb-nav{gap:36px;margin-left:0}
.qb-inner .qb-nav [aria-current]{color:var(--qbi-accent)}
.qb-inner .qb-red-button{gap:12px;font-size:16px;min-height:52px;font-weight:700;white-space:nowrap;transition:filter .2s}
.qb-inner .qb-red-button:hover{filter:brightness(.88)}
.qb-inner .qb-menu-toggle{align-items:center;justify-content:center;min-width:44px;min-height:44px}
.qbi-skip{position:absolute;left:20px;top:-100px;padding:14px;background:#fff;z-index:100}
.qbi-skip:focus{top:10px}
.qbi-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.qbi-breadcrumb{padding-top:25px;padding-bottom:25px;font-size:14px;color:var(--qbi-muted)}
.qbi-breadcrumb nav{display:flex;align-items:center;flex-wrap:wrap;gap:12px}
.qbi-breadcrumb a:hover{color:var(--qbi-panel);text-decoration:underline}
.qbi-banner{background:var(--qbi-surface)}
.qbi-banner__grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;min-height:350px;gap:70px}
.qbi-banner__grid>div{padding:45px 0}
.qbi-banner h1{font-size:clamp(36px,3.5vw,56px);margin-bottom:20px;overflow-wrap:anywhere}
.qbi-banner p{font-size:18px;line-height:1.65;color:var(--qbi-muted);margin-bottom:28px}
.qbi-banner img{width:100%;height:350px;object-fit:cover}
.qbi-catalog{display:grid;grid-template-columns:260px minmax(0,1fr);gap:55px;padding-top:65px;padding-bottom:100px;scroll-margin-top:20px}
.qbi-sidebar h2{font-size:21px;padding-bottom:24px;border-bottom:3px solid var(--qbi-panel)}
.qbi-sidebar nav{display:flex;flex-direction:column}
.qbi-sidebar nav a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 14px;border-bottom:1px solid var(--qbi-line);font-size:16px;min-height:60px}
.qbi-sidebar nav a[aria-current]{color:var(--qbi-panel);font-weight:700;background:var(--qbi-surface)}
.qbi-sidebar nav a:hover{color:var(--qbi-panel)}
.qbi-sidebar nav span{font-size:14px}
.qbi-sidebar__help{margin-top:40px;padding:27px 24px;background:var(--qbi-panel);color:#fff}
.qbi-sidebar__help h3{font-size:21px;line-height:1.2;margin-bottom:16px}
.qbi-sidebar__help p{font-size:16px;line-height:1.6;margin-bottom:20px}
.qbi-sidebar__help a{display:inline-flex;gap:20px;min-height:44px;align-items:center;font-weight:700;text-decoration:underline;text-underline-offset:5px}
.qbi-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:30px;min-height:50px}
.qbi-toolbar>p{color:var(--qbi-muted);font-size:15px}
.qbi-toolbar form{display:flex;max-width:360px;width:100%;border:1px solid var(--qbi-line);background:#fff}
.qbi-toolbar input{width:100%;min-width:0;border:0;padding:12px 15px;color:var(--qbi-ink);background:transparent}
.qbi-toolbar input::placeholder{color:var(--qbi-muted)}
.qbi-toolbar button{border:0;background:var(--qbi-panel);color:#fff;min-width:50px;min-height:48px;display:grid;place-items:center}
.qbi-product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:42px 28px}
.qbi-card{min-width:0;border-bottom:1px solid var(--qbi-line);background:#fff}
.qbi-card__image{display:block;background:#fff;aspect-ratio:1.4;overflow:hidden}
.qbi-card__image img{width:100%;height:100%;object-fit:contain;transition:transform .25s}
.qbi-card:hover .qbi-card__image img{transform:scale(1.025)}
.qbi-card__body{padding:24px 0 27px}
.qbi-card__category{font-size:14px;color:var(--qbi-muted);margin-bottom:10px!important}
.qbi-card h2{font-size:24px;margin:0 0 14px;overflow-wrap:anywhere}
.qbi-card h2 a:hover{color:var(--qbi-panel)}
.qbi-card__body>p:not(.qbi-card__category){color:var(--qbi-muted);line-height:1.65;margin-bottom:18px;max-width:65ch}
.qbi-detail-link{display:inline-flex;align-items:center;gap:16px;min-height:44px;color:var(--qbi-panel);font-weight:700;font-size:15px}
.qbi-detail-link:hover{text-decoration:underline;text-underline-offset:4px}
.qbi-empty{padding:60px 28px;background:var(--qbi-surface)}
.qbi-empty h2{font-size:28px;margin-bottom:15px}
.qbi-empty p{margin-bottom:25px}
.qbi-pagination{display:flex;gap:10px;flex-wrap:wrap;margin-top:40px}
.qbi-pagination>*{min-width:44px;min-height:44px;display:grid;place-items:center;padding:8px 14px;border:1px solid var(--qbi-line)}
.qbi-pagination .current{background:var(--qbi-panel);color:#fff}
.qbi-product-hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:75px;padding-top:22px;padding-bottom:80px}
.qbi-gallery__main{display:block;background:#fff;aspect-ratio:1.2;overflow:hidden}
.qbi-gallery__main img{width:100%;height:100%;object-fit:contain}
.qbi-gallery__hint{font-size:13px;color:var(--qbi-muted);padding:12px 0}
.qbi-gallery__thumbs{display:flex;gap:12px;flex-wrap:wrap}
.qbi-gallery__thumbs a{width:calc((100% - 60px)/6);min-width:64px;aspect-ratio:1.2;border:2px solid var(--qbi-line);display:block;padding:3px;background:#fff}
.qbi-gallery__thumbs a[aria-current]{border-color:var(--qbi-panel)}
.qbi-gallery__thumbs img{width:100%;height:100%;object-fit:contain}
.qbi-image-empty{display:grid;place-items:center;aspect-ratio:1.2;padding:30px;text-align:center;color:var(--qbi-muted);background:var(--qbi-surface)}
.qbi-category-link{display:inline-flex;align-items:center;min-height:44px;color:var(--qbi-panel);font-size:15px}
.qbi-product-summary h1{font-size:clamp(32px,3vw,46px);margin:12px 0 23px;overflow-wrap:anywhere}
.qbi-product-intro{color:var(--qbi-muted);line-height:1.8;max-width:60ch}
.qbi-quick-specs{margin:28px 0 30px;border-top:1px solid var(--qbi-line)}
.qbi-quick-specs>div,.qbi-specification-panel dl>div{display:grid;grid-template-columns:150px minmax(0,1fr);gap:20px;padding:18px 0;border-bottom:1px solid var(--qbi-line)}
.qbi-quick-specs dt{font-weight:700;font-size:14px}
.qbi-quick-specs dd,.qbi-specification-panel dd{margin:0;overflow-wrap:anywhere}
.qbi-product-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.qbi-secondary{display:inline-flex;align-items:center;min-height:52px;border:1px solid var(--qbi-line);padding:10px 20px;font-weight:700;font-size:15px}
.qbi-secondary:hover{border-color:var(--qbi-panel);color:var(--qbi-panel)}
.qbi-summary-note{font-size:14px;line-height:1.65;color:var(--qbi-muted);margin-top:20px!important;max-width:55ch}
.qbi-information{padding:70px 0;background:var(--qbi-surface);scroll-margin-top:20px}
.qbi-information__grid{display:grid;grid-template-columns:1fr 1fr;gap:90px}
.qbi-information h2,.qbi-section-title h2,.qbi-contact h2{font-size:clamp(28px,2.8vw,38px)}
.qbi-rich-text{margin-top:25px;line-height:1.8;max-width:65ch;color:var(--qbi-muted)}
.qbi-rich-text :where(p,ul,ol){margin-bottom:18px}
.qbi-rich-text :where(h2,h3){margin:30px 0 15px;color:var(--qbi-ink)}
.qbi-rich-text img{height:auto}
.qbi-rich-text table{display:block;max-width:100%;overflow-x:auto}
.qbi-specification-panel{background:#fff;padding:32px}
.qbi-specification-panel h3{font-size:23px}
.qbi-specification-panel dl{margin:15px 0 0}
.qbi-specification-panel dt{font-weight:700;font-size:14px}
.qbi-specification-panel p{margin-top:23px;line-height:1.7;color:var(--qbi-muted);font-size:14px}
.qbi-related{padding-top:75px;padding-bottom:85px}
.qbi-section-title{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:35px}
.qbi-related__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}
.qbi-related .qbi-card h2{font-size:22px}
.qbi-contact{background:linear-gradient(rgba(37,41,52,.88),rgba(37,41,52,.88)),url('https://qunbang.novasite.asia/wp-content/uploads/2026/10/jiashili-psd-assets/faq-background-psd.jpg') center/cover;padding:75px 0;color:#fff;scroll-margin-top:20px}
.qbi-contact__grid{display:grid;grid-template-columns:1fr 1fr;gap:100px}
.qbi-contact h2{line-height:1.2;margin-bottom:24px}
.qbi-contact__grid>div>p{line-height:1.75;max-width:55ch}
.qbi-contact__email{display:inline-block;margin:18px 0 28px;font-size:20px;text-decoration:underline;text-underline-offset:5px}
.qbi-faq{border-top:1px solid rgba(255,255,255,.3)}
.qbi-faq details{border-bottom:1px solid rgba(255,255,255,.3)}
.qbi-faq summary{padding:18px 30px 18px 0;font-weight:700;position:relative;list-style:none}
.qbi-faq summary::-webkit-details-marker{display:none}
.qbi-faq summary::after{content:'+';position:absolute;right:4px;font-size:22px;top:13px}
.qbi-faq details[open] summary::after{content:'−'}
.qbi-faq details>div{padding:0 0 18px;line-height:1.7}
.qbi-form{background:#fff;color:var(--qbi-ink);padding:36px;min-width:0}
.qbi-form h3{font-size:28px;margin-bottom:10px}
.qbi-form>p{font-size:13px;color:var(--qbi-muted);margin-bottom:24px}
.qbi-form__row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.qbi-form label{display:block;font-size:14px;font-weight:700;margin-bottom:18px;min-width:0}
.qbi-form :where(input,textarea){display:block;border:1px solid var(--qbi-line);border-radius:0;background:#fff;width:100%;padding:12px;margin-top:8px;font-weight:400;min-height:46px;color:var(--qbi-ink)}
.qbi-form textarea{resize:vertical;min-height:130px;line-height:1.5}
.qbi-form .qb-red-button{border:0;width:100%}
.qbi-form .qbi-form__note{margin:15px 0 0;line-height:1.5}
.qbi-honey{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.qb-inner .qb-footer{padding:65px 0}
.qb-inner .qb-footer__grid{grid-template-columns:1fr 1fr 1fr 1.5fr;gap:45px}
.qb-inner .qb-footer h3{margin-bottom:24px}
.qb-inner .qb-footer__contact strong{display:block;font-size:14px;margin-top:17px}
.qb-inner .qb-footer__contact p,.qb-inner .qb-footer__contact>a{display:block;margin-top:6px;color:var(--qbi-muted);font-size:15px;overflow-wrap:anywhere}
.qb-inner .qb-footer__logo{width:174px;height:107px;object-fit:contain}
.qb-inner .qb-copyright{padding:25px 20px;text-align:center}
@media(min-width:901px) and (max-width:1200px){.qb-inner .qb-nav{gap:20px;font-size:14px}.qbi-catalog{grid-template-columns:220px minmax(0,1fr);gap:32px}.qbi-product-hero{gap:40px}.qbi-contact__grid{gap:45px}}
@media(max-width:900px){.qb-inner .qb-container{width:calc(100% - 40px)}.qb-inner .qb-menu-toggle{display:flex}.qb-inner .qb-nav{display:none}.qb-inner .qb-nav--open{display:flex;position:absolute;top:100%;left:0;width:100%;background:#fff;z-index:50;padding:18px 25px;flex-direction:column;align-items:stretch;gap:0;margin:0;box-shadow:0 8px 15px rgba(37,41,52,.12)}.qb-inner .qb-nav--open a{padding:14px}.qb-inner .qb-header{position:relative}.qb-inner .qb-header__inner{gap:18px}.qb-inner .qb-header__quote{margin-left:auto}.qbi-banner__grid{gap:30px}.qbi-banner img{height:300px}.qbi-catalog{grid-template-columns:1fr;gap:28px;padding:40px 0 60px}.qbi-sidebar nav{flex-direction:row;flex-wrap:wrap;gap:8px;margin-top:15px}.qbi-sidebar nav a{border:1px solid var(--qbi-line);padding:10px 15px;min-height:44px}.qbi-sidebar nav span{display:none}.qbi-sidebar__help{display:none}.qbi-sidebar h2{font-size:20px;padding-bottom:15px}.qbi-product-hero{gap:30px}.qbi-quick-specs>div{grid-template-columns:1fr;gap:6px}.qbi-information__grid{gap:35px}.qbi-contact__grid{gap:35px}.qbi-form{padding:25px}.qbi-form__row{grid-template-columns:1fr;gap:0}.qbi-related__grid{gap:20px}.qb-inner .qb-footer__grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.qb-inner .qb-container{width:calc(100% - 32px)}.qb-inner .qb-logo img{width:90px;height:65px}.qb-inner .qb-header{height:80px}.qb-inner .qb-header__quote{font-size:13px;padding:0 12px;min-height:44px;gap:7px}.qb-inner .qb-header__quote .qb-quote-icon{width:18px;height:18px}.qb-inner .qb-header__inner{gap:10px}.qbi-breadcrumb{font-size:12px;padding-top:18px;padding-bottom:18px}.qbi-banner__grid{grid-template-columns:1fr;gap:0}.qbi-banner__grid>div{padding:32px 0}.qbi-banner h1{font-size:36px}.qbi-banner p{font-size:16px}.qbi-banner img{height:220px;margin-bottom:24px}.qbi-product-grid{gap:30px;grid-template-columns:1fr}.qbi-toolbar{align-items:stretch;flex-direction:column;gap:12px}.qbi-toolbar form{max-width:none}.qbi-card h2{font-size:24px}.qbi-product-hero{grid-template-columns:1fr;padding-top:8px;padding-bottom:45px;gap:25px}.qbi-product-summary h1{font-size:32px}.qbi-gallery__main{aspect-ratio:1.15}.qbi-product-actions>*{width:100%;justify-content:center}.qbi-quick-specs>div{grid-template-columns:120px minmax(0,1fr);gap:15px}.qbi-information{padding:45px 0}.qbi-information__grid{grid-template-columns:1fr;gap:25px}.qbi-specification-panel{padding:24px}.qbi-specification-panel dl>div{grid-template-columns:1fr;gap:7px}.qbi-section-title{align-items:flex-start;flex-direction:column;gap:12px}.qbi-related{padding-top:45px;padding-bottom:45px}.qbi-related__grid{grid-template-columns:1fr;gap:30px}.qbi-contact{padding:45px 0}.qbi-contact__grid{grid-template-columns:1fr;gap:30px}.qbi-form{padding:24px}.qb-inner .qb-footer{padding:40px 0}.qb-inner .qb-footer__grid{gap:30px 20px}.qb-inner .qb-footer__grid>div:first-child,.qb-inner .qb-footer__contact{grid-column:1/-1}.qb-inner .qb-footer__logo{width:130px;height:80px}.qb-inner .qb-footer h3{font-size:18px}}
@media(prefers-reduced-motion:reduce){.qb-inner{scroll-behavior:auto}.qb-inner *{transition:none!important;animation:none!important}.qbi-card:hover .qbi-card__image img{transform:none}}