@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700;800&display=swap');
:root{--navy:#102d50;--deep:#0b213c;--blue:#2879bc;--sky:#eaf3fa;--ink:#182c40;--muted:#697b8d;--line:#dfe7ee;--paper:#fff;--soft:#f5f8fb;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:84px}body{margin:0;color:var(--ink);font:15px/1.65 'DM Sans','Noto Sans SC',sans-serif;background:#fff}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,select{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}.header{height:78px;padding:0 max(calc((100vw - var(--max))/2),5.5vw);display:flex;align-items:center;gap:32px;position:sticky;top:0;z-index:20;background:#fffffff2;border-bottom:1px solid #e9eef2;backdrop-filter:blur(14px)}.logo{display:flex;align-items:center;gap:11px;min-width:222px;font-size:14px;font-weight:700;color:var(--navy);line-height:1.3}.logo 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a{color:#aabdc9}.back-top{position:fixed;bottom:22px;right:24px;width:37px;height:37px;border:1px solid #d9e1e7;background:white;color:#244b6b;border-radius:50%;font-size:17px;box-shadow:0 2px 12px #17334c17;opacity:0;pointer-events:none;transition:.2s;z-index:8}.back-top.visible{opacity:1;pointer-events:auto}.detail-dialog{border:0;border-radius:5px;padding:0;width:min(680px,calc(100vw - 30px));box-shadow:0 25px 90px #081b2c4a;color:var(--ink)}.detail-dialog::backdrop{background:#0a1e33a8;backdrop-filter:blur(3px)}.dialog-close{position:absolute;right:13px;top:9px;border:0;background:#edf3f6;border-radius:50%;width:30px;height:30px;font-size:21px;color:#456176}.dialog-body{padding:29px}.dialog-body h2{color:var(--navy);font-size:23px;margin:2px 35px 6px 0}.dialog-body .sub{color:#60829b;font-size:11px}.dialog-body p{font-size:12px;color:#607485;line-height:1.9}.dialog-art{height:180px;background:#f1f6f8;display:grid;place-items:center;margin:19px 0}.detail-table{width:100%;border-collapse:collapse;font-size:11px}.detail-table td{border:1px solid #e5ebef;padding:8px 10px}.detail-table td:first-child{width:28%;color:#7b8b98;background:#f8fafb}.dialog-actions{margin-top:20px;display:flex;gap:10px}
@media(max-width:1220px){.section,.trust-strip{margin-left:5.5vw;margin-right:5.5vw}.header{padding-left:4vw;padding-right:4vw;gap:18px}.nav{gap:13px}.nav a{font-size:11px}.logo{min-width:205px}}@media(max-width:900px){.header{height:68px}.menu-toggle{display:block;order:3;margin-left:auto}.header-cta{margin-left:auto}.nav{display:none;position:absolute;top:68px;left:0;right:0;background:white;border-bottom:1px solid var(--line);padding:12px 5vw 19px;grid-template-columns:1fr 1fr;gap:0}.nav.open{display:grid}.nav a{padding:11px 3px;font-size:13px}.hero{padding-left:7vw;min-height:510px}.hero-inner{width:55%}.hero h1{font-size:43px}.hero-art{right:0;width:46%;transform:translate(10%,-50%) scale(.87)}.section{padding-top:68px;padding-bottom:68px}.brand-tile{padding:18px 15px}.product-grid{grid-template-columns:repeat(3,1fr)}.application-inner{gap:28px}.about-inner{gap:40px}.contact-inner{gap:36px}.footer-main{grid-template-columns:1.5fr 1fr 1fr 1fr}.footer-main>p{display:none}}@media(max-width:620px){html{scroll-padding-top:70px}.header{padding:0 17px;gap:9px}.logo{min-width:0;font-size:12px}.logo-mark{width:34px;height:34px}.logo small{font-size:9px}.header-cta{padding:9px 11px;font-size:10px}.menu-toggle{font-size:21px}.nav{padding-left:19px;padding-right:19px}.hero{min-height:auto;padding:48px 22px 265px;align-items:flex-start}.hero-inner{width:100%}.eyebrow{font-size:9px;margin-bottom:12px}.hero h1{font-size:39px}.hero p{font-size:12px;max-width:440px}.hero-actions{margin-top:20px}.hero-note{font-size:8px;gap:9px;margin-top:19px}.hero-note span+span{padding-left:9px}.hero-art{width:100%;height:250px;right:0;top:auto;bottom:2px;transform:scale(.72);transform-origin:50% 100%}.art-glow{width:280px;height:280px;right:8%;top:0}.art-card-back{right:23%;top:0;transform:scale(.82);transform-origin:top right}.art-card-front{right:6%;bottom:10px;transform:scale(.78);transform-origin:bottom right}.art-caption{left:9%;bottom:3px}.trust-strip{margin:0 20px;padding:19px 0;display:grid;grid-template-columns:1fr 1fr;gap:17px}.trust-strip b{font-size:21px}.trust-note{text-align:left;font-size:9px}.section{margin-left:20px;margin-right:20px;padding-top:58px;padding-bottom:58px}.section-head{align-items:flex-start;gap:15px;flex-direction:column;margin-bottom:21px}.section-head h2,.application-copy h2,.about-copy h2{font-size:24px}.section-head p{font-size:11px;line-height:1.8}.section-head>.button{align-self:flex-start}.brand-grid{grid-template-columns:1fr 1fr}.brand-tile{height:131px;padding:14px}.brand-tile:nth-child(2){border-right:0}.brand-tile:nth-child(-n+2){border-bottom:1px solid var(--line)}.brand-tile strong{font-size:20px;margin-top:8px}.product-section{padding-top:54px}.filters{display:grid;grid-template-columns:1fr 1fr}.search-box{grid-column:1/-1;max-width:none}.filters select{height:39px;min-width:0;width:100%}.results-meta{font-size:9px;gap:10px;line-height:1.5}.product-grid{grid-template-columns:repeat(2,1fr);gap:9px}.product-image{height:140px}.illustration-fan{width:91px;height:91px}.illustration-sensor{transform:scale(.85)}.product-info{padding:11px 10px}.product-info h3{font-size:12px}.product-brand,.model-line,.param-line,.product-actions button,.product-actions a{font-size:9px}.param-line{min-height:30px;margin:7px 0}.product-actions{gap:5px}.application-inner{display:block;margin:0;padding:55px 20px 54px}.application-copy p{max-width:100%}.application-grid{margin-top:28px}.application-grid article{padding:15px 13px;min-height:120px}.application-grid article p{line-height:1.7}.application-foot{position:static;margin-top:12px;line-height:1.6}.steps{grid-template-columns:1fr;border-top:0}.steps article,.steps article+article{padding:14px 0;border-right:0;border-top:1px solid var(--line)}.steps article:last-child{border-top:1px solid var(--line)}.about-inner{display:block}.about-visual{height:220px;margin-bottom:29px}.company-fields{gap:9px}.company-fields span{font-size:8px}.company-fields b{font-size:10px}.news-grid{grid-template-columns:1fr;gap:10px}.news-card{min-height:170px}.contact-inner{display:block;margin:0;padding:57px 20px}.contact-copy h2{font-size:28px}.contact-details{gap:17px}.contact-details b{font-size:10px}.inquiry-form{margin-top:29px;padding:20px 15px 16px}.form-heading{align-items:flex-start;gap:10px}.form-heading span{font-size:8px}.form-grid{gap:10px}.form-grid label{font-size:9px}.form-grid input,.form-grid select,.form-grid textarea{font-size:10px;padding-left:8px;padding-right:8px}.form-bottom{align-items:flex-start;flex-direction:column;gap:8px}.privacy{line-height:1.6}.footer{padding:0 20px}.footer-main{grid-template-columns:1fr 1fr;gap:21px 15px;padding:28px 0 20px}.footer-logo{grid-column:1/-1}.footer-main>div{font-size:9px}.footer-bottom{flex-wrap:wrap;gap:9px}.back-top{right:14px;bottom:14px}.dialog-body{padding:23px 17px}.dialog-body h2{font-size:19px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
/* 品牌官网公开产品图 */
.product-image,.dialog-art{position:relative}
.real-product-image{display:block;width:100%;height:100%;max-width:100%;max-height:100%;object-fit:contain;padding:18px 15px 31px;background:#f7f9fa;mix-blend-mode:multiply}
.image-source{position:absolute;left:0;right:0;bottom:0;padding:5px 8px;background:#ffffffeb;color:#55738a;text-align:center;font-size:9px;line-height:1.4;border-top:1px solid #e8edf0}
.image-source:hover{color:#1b6ea8;text-decoration:underline}
.dialog-art .detail-product-image{height:230px;padding:16px 20px 30px}
.hero-real-showcase{position:absolute;inset:30px 4% 37px 6%;display:grid;grid-template-columns:1.15fr .85fr;grid-template-rows:1fr 1fr;gap:12px;transform:rotate(-2deg)}
.hero-photo{margin:0;min-height:0;position:relative;background:#fff;border:1px solid #e0e8ed;box-shadow:0 12px 30px #18385218;overflow:hidden;padding:10px}
.hero-photo img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply}
.hero-photo figcaption{position:absolute;left:8px;bottom:7px;background:#ffffffed;color:#48657c;padding:2px 7px;font-size:9px;letter-spacing:.04em}
.hero-photo-main{grid-row:1/3}
@media(max-width:620px){.hero-real-showcase{inset:4px 7% 32px 8%;gap:8px}.hero-photo{padding:6px}.hero-photo figcaption{font-size:8px;left:5px;bottom:4px}.real-product-image{padding:16px 10px 30px}.image-source{font-size:8px}.dialog-art .detail-product-image{height:190px}}
.dialog-art{height:230px;min-height:230px}
@media(max-width:620px){.dialog-art{height:190px;min-height:190px}}
/* 用户提供产品与现场素材的展示优化 */
.product-image{background:#f0f4f7}
.product-image .real-product-image{object-fit:contain;object-position:center;padding:12px 16px 31px;mix-blend-mode:normal;background:#f4f7f9}
.product-image .real-product-image[src*="company-lem"]{object-position:center 46%}
.product-image .real-product-image[src*="company-kaku-ka1725"]{object-position:center 54%}
.dialog-art .real-product-image{object-fit:contain;padding:15px 22px 30px;mix-blend-mode:normal;background:#f6f8fa}
.image-source{background:#fffffff0;color:#536d81}
.hero-photo img[src*="company-"]{object-fit:cover}
.hero-photo img[src*="company-lem"]{object-position:center 47%}
.hero-photo img[src*="company-kaku-ka1725"]{object-position:center 54%}
.about-visual{overflow:hidden;display:block;background:#e9eff3}
.about-warehouse{width:100%;height:100%;display:block;object-fit:cover;object-position:center}
.warehouse-caption{position:absolute;left:0;right:0;bottom:0;padding:14px 18px;background:linear-gradient(0deg,#09203bd9,transparent);color:#fff;display:flex;flex-direction:column;gap:2px}
.warehouse-caption b{font-size:12px}.warehouse-caption span{font-size:9px;color:#d8e3eb}
@media(max-width:620px){.warehouse-caption{padding:11px 13px}}
.photo-link{display:block;width:100%;height:100%;min-height:0;outline-offset:-3px}
.photo-link:focus-visible{outline:2px solid #4388b4}
/* 首屏聚焦三类风扇：ADDA主图，SUNON与卡固并列 */
.hero-real-showcase{grid-template-rows:minmax(0,1fr) minmax(0,1fr)}
.hero-photo-main{grid-row:1/3}
.hero-photo:not(.hero-photo-main){min-height:0}
.hero-photo img{display:block}
@media(max-width:620px){.hero-real-showcase{grid-template-rows:minmax(0,1fr) minmax(0,1fr)}}

.hero-photo-tag{position:absolute;right:9px;top:9px;z-index:2;padding:3px 7px;background:#fffE;color:#587087;border:1px solid #dce6ed;font-size:8px;letter-spacing:.04em}
@media(max-width:620px){.hero-photo-tag{right:6px;top:6px;padding:2px 5px;font-size:7px}}
.catalog-section{padding-top:62px;padding-bottom:72px;border-top:1px solid var(--line)}.catalog-tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin:22px 0 24px}.catalog-tab{border:0;background:transparent;padding:12px 18px;color:#64798c;border-bottom:2px solid transparent;font-weight:600;font-size:13px}.catalog-tab.active{color:var(--navy);border-color:#2b83c3}.catalog-panel[hidden]{display:none}.catalog-panel-head{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-bottom:18px}.catalog-panel-head h3{font-size:18px;color:var(--navy);margin:0 0 4px}.catalog-panel-head p,.catalog-source{color:#718395;font-size:11px;margin:0;line-height:1.8}.catalog-download{color:#2677ad;font-size:11px;white-space:nowrap}.kaku-viewer{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;gap:12px;align-items:center;background:#f1f4f7;padding:18px}.kaku-viewer img{display:block;width:100%;height:min(72vh,850px);object-fit:contain;background:#fff}.page-arrow{height:44px;border:1px solid #d6e0e7;background:#fff;color:var(--navy);font-size:26px}.page-controls{display:flex;align-items:center;gap:12px;padding:12px 0 20px;color:#718395;font-size:11px}.page-controls select{padding:6px 24px 6px 9px;border:1px solid var(--line);background:white;color:var(--ink)}.page-controls a,.catalog-source a{color:#2879bc}.table-wrap{overflow-x:auto;margin:14px 0 10px}.selection-table{border-collapse:collapse;width:100%;font-size:11px;white-space:nowrap}.selection-table caption{text-align:left;color:var(--navy);font-size:13px;font-weight:700;padding:10px 0}.selection-table th{background:#edf3f7;color:#435d73;font-weight:600}.selection-table th,.selection-table td{border:1px solid #dfe7ed;padding:9px 11px;text-align:left}.selection-table td{color:#455a6d}.catalog-source{margin-top:12px}.catalog-pdf{width:100%;height:670px;margin-top:18px;border:1px solid var(--line);background:#f4f7f9}.catalog-index{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}.catalog-index span{padding:9px 13px;background:#f2f6f9;color:#677d8f;font-size:11px}.catalog-index b{color:var(--navy);margin-right:6px}.results-meta>a{color:#2879bc;font-size:10px}.brand-grid+.catalog-section{margin-top:0}@media(max-width:620px){.catalog-section{padding-top:48px;padding-bottom:52px}.catalog-tabs{gap:0;overflow:auto}.catalog-tab{padding:11px 13px;white-space:nowrap;font-size:11px}.catalog-panel-head{align-items:flex-start;flex-direction:column;gap:8px}.kaku-viewer{grid-template-columns:30px minmax(0,1fr) 30px;gap:6px;padding:8px}.kaku-viewer img{height:56vh}.page-arrow{height:38px;font-size:22px}.page-controls{flex-wrap:wrap;gap:8px;font-size:9px}.catalog-pdf{height:510px}.selection-table{font-size:10px}.selection-table th,.selection-table td{padding:7px 8px}}
.contact-details a{color:inherit}.contact-details a:hover{color:#7fc3f0}.contact-details .contact-address{align-items:flex-start;flex-wrap:wrap}.contact-address b{width:100%;line-height:1.7}.map-link{color:#9acdf1!important;font-size:11px;margin-top:3px}.wechat-contact{display:flex;align-items:center;gap:14px;margin-top:19px;padding:13px;background:#ffffff12;border:1px solid #ffffff25;width:max-content;max-width:100%}.wechat-contact img{width:92px;height:92px;object-fit:contain;background:#fff;border-radius:4px}.wechat-contact div{display:grid;gap:4px}.wechat-contact b{font-size:12px;color:#fff}.wechat-contact span{font-size:10px;color:#d0deea}.footer-main>div a{display:block;color:#7c8d9d;font-size:10px;margin-top:7px}.footer-main>div a:hover{color:var(--blue)}@media(max-width:620px){.wechat-contact{margin-top:16px;padding:10px}.wechat-contact img{width:82px;height:82px}.contact-details .contact-address b{font-size:10px}}
/* 联系区重新排版：让联系方式成为易读的分组信息卡 */
.contact-details{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin:25px 0 15px}.contact-details>div{min-width:0;min-height:65px;padding:11px 13px;background:#ffffff0b;border:1px solid #ffffff24;border-radius:4px;display:flex;flex-direction:column;justify-content:center;gap:5px}.contact-details span{font-size:10px;line-height:1.4;letter-spacing:.04em;color:#9bb3c5}.contact-details b{font-size:13px;line-height:1.5;font-weight:500;overflow-wrap:anywhere}.contact-details>div:nth-child(4){grid-column:1/-1;min-height:78px}.contact-details .contact-address b{width:100%;font-size:12px;line-height:1.6;overflow-wrap:normal}.contact-details .contact-address .map-link{font-size:10px;line-height:1.4;margin-top:0}.contact-details>div:nth-child(2) b{white-space:nowrap}.contact-details>div:nth-child(3) b{font-size:12px;white-space:nowrap}.wechat-contact{margin-top:15px;padding:11px 13px;gap:13px;border-radius:4px}.wechat-contact img{width:78px;height:78px}.contact-copy>small{display:block;line-height:1.7;margin-top:10px}.footer-main>div a{line-height:1.5}
@media(max-width:620px){.contact-details{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:21px 0 13px}.contact-details>div{min-height:61px;padding:10px}.contact-details>div:nth-child(4){grid-column:1/-1}.contact-details b{font-size:12px}.contact-details>div:nth-child(3) b{font-size:11px}.contact-details .contact-address b{font-size:11px}.wechat-contact img{width:76px;height:76px}}
@media(max-width:370px){.contact-details{grid-template-columns:1fr}.contact-details>div:nth-child(4){grid-column:auto}}