/* Homepage: original navigation scale, square controls, responsive first screen. */
.nb-header,.nb-header *,.nb-hero,.nb-hero *,.nb-services,.nb-services *{box-sizing:border-box}
.nb-header{position:relative;z-index:1000;width:100%;border-top:2px solid #c00;border-bottom:3px solid #111;background:#111;color:#ccc;font-family:"Microsoft YaHei",sans-serif}
.nb-header-inner{height:65px;max-width:1240px;margin:0 auto;padding:0 10px;display:flex;align-items:center;gap:40px}
.nb-brand{display:block;flex:none;width:140px;line-height:0}.nb-brand img{display:block;width:100%;height:auto;border:0}
.nb-brand-group{display:flex;align-items:center;gap:8px;flex:none;margin:0}
.nb-provider-badge{display:flex;align-items:center;flex:none;width:142px;height:38px;margin:0;padding:0 13px 0 8px;background:rgba(255,255,255,.9);border-radius:5px;color:#222;font:400 16px/19px "Microsoft YaHei",Arial,sans-serif;white-space:nowrap}
.nb-provider-icon{display:block;flex:none;width:34px;height:24px;margin:0 7px 0 0;background:url('/images/home-ai/brand_provider_icon.png') no-repeat center;background-size:36px 24px}
.nb-navigation{display:flex;align-items:center;justify-content:flex-end;flex:1;min-width:0;height:100%;gap:20px;margin:0}
.nb-nav-list{display:flex;align-items:center;gap:0;list-style:none;margin:0;padding:0;height:100%}.nb-nav-list>li{position:relative;display:flex;align-items:center;height:100%;padding:0}
.nb-nav-link{display:flex;align-items:center;gap:8px;height:100%;padding:0 11px 4px;border-top:3px solid #000;color:#ccc;font-size:16px;font-weight:400;line-height:61px;white-space:nowrap;text-decoration:none;cursor:pointer;list-style:none}
.nb-nav-link:hover,.nb-nav-link:focus-visible,.nb-nav-link.is-current,.nb-dropdown[open]>.nb-nav-link{color:#fff;background:#333;border-top-color:#c00;filter:none}
.nb-dropdown{height:100%}.nb-dropdown summary::-webkit-details-marker{display:none}
.nb-dropdown>.nb-nav-link{gap:0;padding:0 0 4px}.nb-parent-link{display:flex;align-items:center;align-self:stretch;flex:1;margin:0;padding:0 6px 0 11px;color:inherit;font:inherit;text-decoration:none}.nb-parent-link:hover{color:inherit;filter:none}.nb-dropdown-arrow{display:flex;align-items:center;justify-content:center;align-self:stretch;width:20px;margin:0}
.nb-chevron{display:block;width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:4px solid #ccc}
.nb-subnav{position:absolute;top:100%;left:0;right:auto;width:max-content;min-width:max(115px,100%);margin:0;padding:15px 0;background:#333;border:0;border-radius:0;box-shadow:none;list-style:none}
.nb-subnav li{padding:0;margin:0;height:40px}.nb-subnav a{display:block;padding:0 12px;color:#eee;font-size:14px;font-weight:400;line-height:35px;white-space:nowrap;border:0;border-radius:0;text-align:center;text-decoration:none}
.nb-subnav a:hover,.nb-subnav a:focus-visible{color:#fff;background:#333;filter:brightness(1.1)}
.nb-account{display:flex;gap:10px;flex:none;margin:0}.nb-account a{display:block;width:auto;height:32px;padding:5px 20px;border:0;border-radius:0;color:#fff;font-size:16px;font-weight:400;line-height:22px;text-decoration:none;white-space:nowrap}
.nb-account-register{background:#06c}.nb-account-login{background:#c00}.nb-account a:hover{background:#f00;color:#fff;filter:none}
.nb-menu-toggle{display:none}
.nb-header a:focus-visible,.nb-header summary:focus-visible,.nb-menu-toggle:focus-visible,.nb-hero a:focus-visible,.nb-services a:focus-visible,.nb-services button:focus-visible{outline:2px solid #5596ff;outline-offset:3px}
.nb-hero{position:relative;isolation:isolate;overflow:hidden;width:100%;height:calc(100vh - 70px);height:calc(100svh - 70px);background:#e9f5ff url('/images/home-ai/banner-body-shot.jpg') center center/100% 100% no-repeat;font-family:"Microsoft YaHei",sans-serif;color:#333}
.nb-hero-copy{position:relative;z-index:3;text-align:center;padding:clamp(22px,4vh,42px) 20px 0}
.nb-hero h1{margin:0;padding:0;color:#333;font-size:45px;font-weight:400;letter-spacing:0;line-height:1.35}.nb-hero h1 span{display:block;color:#0057ff;white-space:nowrap;font-size:inherit;font-weight:400}
.nb-hero-copy>p{margin:12px 0 0;padding:0;color:#333;font-size:24px;font-weight:400;line-height:1.5}
.nb-hero-actions{display:flex;justify-content:center;gap:15px;margin:18px auto 0}.nb-hero-actions a{display:inline-flex;align-items:center;justify-content:center;height:54px;width:auto;padding:15px 60px;font-size:18px;font-weight:400;line-height:22px;border:1px solid #d00;border-radius:0;text-decoration:none}
.nb-hero-primary{color:#d00!important;background:transparent}.nb-hero-secondary{color:#fff!important;background:#d00}.nb-hero-actions a:hover{filter:brightness(1.1)}
.nb-hero-art{position:absolute;inset:0;z-index:1;pointer-events:none}.nb-hero-robot{position:absolute;left:50%;bottom:10%;height:43%;width:auto;max-width:none;transform:translateX(-50%);filter:drop-shadow(0 12px 10px #2161c125)}
.nb-orbit-icon{position:absolute;width:4.325%;max-width:83px;aspect-ratio:1;transform:translate(-50%,-50%)}.nb-orbit-icon img{display:block;width:100%;height:auto;animation:nb-icon-breathe var(--duration,5s) ease-in-out var(--delay,0s) infinite;will-change:transform}
.nb-icon-baidu{left:37%;top:52%;--duration:5.2s;--delay:-.8s}.nb-icon-bing{left:30%;top:65%;--duration:5.8s;--delay:-2.5s}.nb-icon-360{left:34%;top:80%;--duration:6.2s;--delay:-4s}.nb-icon-sogou{left:40%;top:88%;--duration:5.4s;--delay:-1.6s}
.nb-icon-doubao{left:63%;top:52%;--duration:5.6s;--delay:-3.1s}.nb-icon-qianwen{left:70%;top:65%;--duration:6s;--delay:-.3s}.nb-icon-deepseek{left:66%;top:80%;--duration:5s;--delay:-2s}.nb-icon-yuanbao{left:60%;top:88%;--duration:6.4s;--delay:-4.7s}
@keyframes nb-icon-breathe{0%,100%{transform:translateY(4px) scale(.98)}50%{transform:translateY(-5px) scale(1.025)}}
.nb-mobile-footer{display:none}
.nb-services{position:fixed;right:10px;top:50%;transform:translateY(-50%);width:64px;z-index:300;margin:0}
.nb-services a,.nb-services button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;width:64px;height:64px;margin:5px 0;padding:4px;border:1px solid #eee;border-radius:0;background:#fff;color:#333;font:12px/1.5 "Microsoft YaHei",sans-serif;cursor:pointer;text-decoration:none}
.nb-services .nb-service-trial{background:#c00;border-color:#c00;color:white}.nb-services a:hover,.nb-services button:hover{border-color:#c00;color:#c00}.nb-services .nb-service-trial:hover{color:#fff}
.nb-service-icon{display:block;width:32px;height:32px;background-position:center top;background-repeat:no-repeat}.nb-service-trial .nb-service-icon{background-image:url('/images/newpc/box_icon.png');background-position:center}.nb-service-wechat .nb-service-icon{background-image:url('/images/newpc/online_contact_icon.png')}.nb-service-top .nb-service-icon{background-image:url('/images/newpc/web_top_icon.png')}.nb-service-wechat:hover .nb-service-icon,.nb-service-top:hover .nb-service-icon{background-position:center -32px}
@media(min-width:769px){.nb-mobile-footer,.nb-mobile-footer .bottom_Menu,.nb-mobile-footer .bottom_pro_div,.nb-mobile-footer .bottom_margin{display:none!important}}
@media(max-height:700px) and (min-width:769px){.nb-hero-copy{padding-top:16px}.nb-hero-copy>p{margin-top:6px}.nb-hero-actions{margin-top:12px}.nb-hero-robot{height:39%;bottom:6%}.nb-icon-baidu,.nb-icon-doubao{top:61%}.nb-icon-sogou,.nb-icon-yuanbao{top:91%}}
@media(max-width:1000px){
 .nb-header-inner{padding:0 20px;gap:20px;justify-content:space-between}.nb-brand{width:130px}
 .nb-menu-toggle{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:36px;height:36px;margin:0;padding:6px;border:0;border-radius:0;background:transparent;color:white;cursor:pointer}.nb-menu-toggle span{display:block;width:22px;height:2px;background:currentColor;transition:transform .2s,opacity .2s}
 .nb-menu-toggle[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}.nb-menu-toggle[aria-expanded=true] span:nth-child(2){opacity:0}.nb-menu-toggle[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
 .nb-navigation{display:none;position:absolute;top:100%;left:0;right:0;height:auto;max-height:calc(100dvh - 70px);overflow-y:auto;background:#282828;padding:8px 20px 20px;border-top:1px solid #333}.nb-navigation.is-open{display:block}.nb-nav-list{display:block;height:auto}.nb-nav-list>li{display:block;height:auto;border-bottom:1px solid #383838}
 .nb-nav-link{height:auto;padding:12px 4px;font-size:16px;line-height:24px;justify-content:space-between;border-top:0}.nb-nav-link.is-current{background:#333}.nb-subnav{position:static;width:auto;min-width:0;background:#333;padding:8px 0;margin:0 0 8px}.nb-subnav a{text-align:left;padding-left:20px;font-size:14px}.nb-account{margin-top:16px;gap:10px}.nb-account a{width:auto;height:32px;font-size:16px}
 .nb-dropdown>.nb-nav-link{padding:0}.nb-parent-link{padding:12px 4px}.nb-dropdown-arrow{width:40px}
 .nb-orbit-icon{width:5.25%;max-width:50px}
}
@media(max-width:768px){
 .nb-header{height:56px}.nb-header-inner{height:51px;padding:0 16px}.nb-brand{width:116px}.nb-navigation{max-height:calc(100dvh - 56px)}
 .nb-hero{height:480px;background-size:auto 100%;background-position:center bottom}.nb-hero-copy{padding:22px 12px 0}.nb-hero h1{font-size:26px;line-height:1.4}.nb-hero-copy>p{margin:9px auto 0;font-size:14px;line-height:1.65}.nb-hero-copy>p>span{display:block;white-space:nowrap}.nb-hero-copy .nb-desktop-comma{display:none}
 .nb-hero-actions{gap:12px;margin-top:13px}.nb-hero-actions a{height:36px;padding:7px 22px;font-size:14px;line-height:20px}
 .nb-hero-robot{height:40%;bottom:9%}.nb-orbit-icon{width:8.5%;max-width:40px}.nb-icon-baidu{left:29%;top:54%}.nb-icon-bing{left:18%;top:66%}.nb-icon-360{left:21%;top:81%}.nb-icon-sogou{left:33%;top:89%}.nb-icon-doubao{left:71%;top:54%}.nb-icon-qianwen{left:82%;top:66%}.nb-icon-deepseek{left:79%;top:81%}.nb-icon-yuanbao{left:67%;top:89%}
 .nb-mobile-footer{display:block}.nb-mobile-footer .bottom_Menu .menu_ul{padding:7px 0 4px}.nb-mobile-footer .menu_icon{max-width:18px}.nb-mobile-footer .menu_title{font-size:11px;margin-top:3px}
 .nb-services{right:5px;top:auto;bottom:58px;transform:none;width:40px}.nb-services a,.nb-services button{width:40px;height:42px;margin:3px 0;padding:3px;gap:0}.nb-services .nb-service-icon{transform:scale(.75);height:30px;flex:none}.nb-services .nb-service-label{display:none}
}
@media(max-width:360px){.nb-hero{height:450px}.nb-hero h1{font-size:24px}.nb-hero-copy>p{font-size:12px}.nb-hero-actions a{height:32px;font-size:12px;padding:5px 18px}.nb-brand{width:108px}.nb-hero-robot{height:39%}}
@media(max-width:480px){.nb-header-inner{gap:8px}.nb-brand-group{gap:8px}.nb-provider-badge{width:118px;height:32px;padding:0 7px;font-size:13px;line-height:18px}.nb-provider-icon{width:28px;height:20px;margin-right:5px;background-size:30px 20px}}
@media(max-width:360px){.nb-header-inner{padding:0 12px}.nb-brand-group{gap:6px}.nb-provider-badge{width:112px;padding:0 5px}.nb-provider-icon{margin-right:3px}}
@media(prefers-reduced-motion:reduce){.nb-orbit-icon img{animation:none;will-change:auto}.nb-menu-toggle span{transition:none}}
/* Final hero balance and AI trial dialog. */
.nb-hero h1 span{font-weight:700}
.nb-hero-robot{height:47%}
.nb-orbit-icon{width:4.9%;max-width:94px}
.nb-icon-baidu{left:35%;top:49%}.nb-icon-bing{left:27%;top:61%}.nb-icon-360{left:31%;top:77%}.nb-icon-sogou{left:38%;top:85%}
.nb-icon-doubao{left:65%;top:49%}.nb-icon-qianwen{left:73%;top:61%}.nb-icon-deepseek{left:69%;top:77%}.nb-icon-yuanbao{left:62%;top:85%}
.nb-trial-open{overflow:hidden}
.nb-trial-dialog,.nb-trial-dialog *{box-sizing:border-box}
.nb-trial-dialog{--nb-trial-color:#cc0000;position:fixed;inset:0;width:490px;max-width:calc(100vw - 24px);max-height:calc(100dvh - 24px);margin:auto;padding:0;border:0;border-radius:0;background:white;color:#666;overflow:auto;box-shadow:0 12px 50px #0004;font-family:"Microsoft YaHei",sans-serif}
.nb-trial-dialog::backdrop{background:rgba(0,0,0,.42)}
.nb-trial-heading{position:relative;margin:0;background:var(--nb-trial-color);padding:0 52px}
.nb-trial-heading h2{margin:0;padding:0;font-size:30px;font-weight:400;line-height:90px;color:white;text-align:center;white-space:nowrap}
/* Use the same glyph, size and placement as the WeChat service dialog. */
@font-face{font-family:nb-dialog-close;src:url('/share/icon/iconfont.woff2?t=1631257317889') format('woff2'),url('/share/icon/iconfont.woff?t=1631257317889') format('woff')}
.nb-trial-close{position:absolute;top:10px;right:12px;display:block;width:20px;height:26.6px;margin:0;padding:0;border:0;border-radius:0;background:transparent;color:#fff;font:20px/1.33 nb-dialog-close;cursor:pointer;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
.nb-trial-close::before{content:"\e620"}.nb-trial-close::after{content:"";position:absolute;inset:-6px}
.nb-trial-form{padding:34px 60px 22px;margin:0;background:#fff}
.nb-trial-row{display:flex;align-items:center;height:61px;border-bottom:1px solid #ddd;gap:0;margin:0}
.nb-trial-row label{flex:none;width:70px;text-align:left;color:#666;font-size:14px;font-weight:400}
.nb-trial-row input{flex:1;min-width:0;width:100%;padding:0;border:0;border-radius:0;height:42px;outline:none;background:transparent;color:#333;font:14px/1.5 "Microsoft YaHei",sans-serif}
.nb-trial-row:focus-within{border-bottom-color:var(--nb-trial-color)}
.nb-trial-send{flex:none;padding:0;border:0;background:none;color:var(--nb-trial-color);font:14px/1.5 "Microsoft YaHei",sans-serif;white-space:nowrap;cursor:pointer}
.nb-trial-submit{display:block;width:100%;height:52px;margin:14px 0 0;padding:0;border:0;border-radius:0;background:var(--nb-trial-color);color:#fff;font:20px/52px "Microsoft YaHei",sans-serif;cursor:pointer}
.nb-trial-submit:hover{background:#b00000}
.nb-trial-error{margin:10px 0 0;font:12px/1.6 "Microsoft YaHei",sans-serif;text-align:left;color:#c00}
.nb-trial-agree{margin:10px 0 0;font:12px/1.6 "Microsoft YaHei",sans-serif;color:#666}.nb-trial-agree label{display:flex;align-items:center;gap:4px}.nb-trial-agree input{flex:none;width:auto;margin:0}.nb-trial-agree a{color:var(--nb-trial-color);text-decoration:none}
.nb-trial-main-site{display:block;margin-top:10px;text-align:center;color:var(--nb-trial-color);font-size:13px}
.nb-trial-footer{padding:0 60px 28px}
.nb-trial-gift-note{display:flex;align-items:center;gap:12px;margin:0;padding:12px;border:1px solid #f8dfda;border-radius:0;background:linear-gradient(110deg,#fff4ef,#fffaf8);text-align:left;color:#80615a;font:12px/1.7 "Microsoft YaHei",sans-serif}.nb-trial-gift-note img{flex:none;width:42px;height:42px;object-fit:contain;filter:drop-shadow(0 3px 4px #cc000016)}
.nb-trial-login-row{gap:10px}.nb-login-icon{flex:none;width:21px;height:23px;color:#999}.nb-login-eye{display:flex;align-items:center;justify-content:center;width:30px;height:36px;flex:none;padding:0;border:0;background:transparent;color:#888;cursor:pointer}.nb-login-eye svg{width:22px;height:22px}.nb-login-eye[aria-pressed=true]{color:var(--nb-trial-color)}
.nb-login-captcha{flex:none;width:90px;height:36px;padding:0;border:0;background:#071829;color:#c2cad4;font:12px/36px "Microsoft YaHei",sans-serif;cursor:pointer}.nb-login-captcha img{display:block;width:90px;height:36px}
.nb-login-links{display:flex;align-items:center;justify-content:space-between;margin-top:20px;gap:12px;font:13px/1.5 "Microsoft YaHei",sans-serif}.nb-login-links a{color:#666;text-decoration:none}.nb-login-links button{padding:0;border:0;background:none;color:var(--nb-trial-color);font:inherit;cursor:pointer}.nb-trial-submit:disabled{opacity:.6;cursor:wait}
.nb-trial-switch-links{justify-content:flex-end}
.nb-trial-dialog [hidden]{display:none!important}
.nb-trial-dialog button:focus-visible,.nb-trial-dialog a:focus-visible{outline:2px solid var(--nb-trial-color);outline-offset:3px}
@media(max-height:700px) and (min-width:769px){.nb-hero-robot{height:43%;bottom:6%}.nb-icon-baidu,.nb-icon-doubao{top:59%}.nb-icon-sogou,.nb-icon-yuanbao{top:88%}}
@media(max-width:1000px){.nb-orbit-icon{width:5.8%;max-width:56px}}
@media(max-width:768px){
 .nb-hero-robot{height:43%}.nb-orbit-icon{width:9.5%;max-width:45px}
 .nb-icon-baidu{left:26%;top:51%}.nb-icon-bing{left:14%;top:63%}.nb-icon-360{left:17%;top:78%}.nb-icon-sogou{left:30%;top:86%}
 .nb-icon-doubao{left:74%;top:51%}.nb-icon-qianwen{left:86%;top:63%}.nb-icon-deepseek{left:83%;top:78%}.nb-icon-yuanbao{left:70%;top:86%}
}
@media(max-width:480px){.nb-trial-heading{padding:0 46px}.nb-trial-heading h2{font-size:23px;line-height:76px}.nb-trial-form{padding:22px 24px}.nb-trial-footer{padding:0 24px 24px}.nb-trial-row label{width:60px;font-size:13px}.nb-trial-row input,.nb-trial-send{font-size:13px}.nb-trial-submit{font-size:18px;height:46px;line-height:46px}.nb-trial-login-row{gap:8px}.nb-login-captcha,.nb-login-captcha img{width:78px}}
@media(max-width:360px){.nb-hero-robot{height:42%}.nb-trial-heading h2{font-size:20px}.nb-trial-form{padding:18px 20px}.nb-trial-footer{padding:0 20px 20px}}

/* Header dimensions and the company-information section. */
.nb-header .nb-brand{width:auto;height:32px}.nb-header .nb-brand img{width:auto;height:32px}
.nb-subnav a{text-align:left}
.nb-builder,.nb-builder *{box-sizing:border-box}
.nb-builder{--nb-builder-radius:12px;background:#ECECEC}
.nb-builder-highlight{color:#0057ff}
.nb-builder-card{display:grid;grid-template-columns:220px minmax(0,1fr);gap:26px;padding:28px 26px 24px;border:16px solid #fff;border-radius:0;background:linear-gradient(120deg,#e3f1ffb8,#f6faffdf);box-shadow:0 12px 38px #71b2eb30}
.nb-builder-assistant{position:relative;align-self:center;justify-self:center;width:210px;max-width:100%;padding-top:24px}.nb-builder-robot{display:block;width:100%;height:auto}.nb-builder-hi{position:absolute;width:60px;height:auto;top:-13px;right:-1px;transform-origin:25% 85%;animation:nb-hi-wave 3.8s ease-in-out infinite}
@keyframes nb-hi-wave{0%,55%,100%{transform:translateY(0) rotate(0) scale(1)}10%,30%{transform:translateY(-5px) rotate(-12deg) scale(1.06)}20%,40%{transform:translateY(-3px) rotate(10deg) scale(1.04)}}
@media(prefers-reduced-motion:reduce){.nb-builder-hi{animation:none}}
.nb-builder-form{min-width:0;margin:0;padding:0}
.nb-builder-editor{padding:22px 22px 12px;border:1px solid #4777ff;border-radius:var(--nb-builder-radius);background:#fff;transition:box-shadow .2s}
.nb-builder-editor:focus-within{box-shadow:0 0 0 3px #0057ff15}
.nb-builder-editor textarea{display:block;width:100%;height:120px;min-height:100px;margin:0;padding:0;border:0;border-radius:0;outline:none;resize:vertical;background:transparent;color:#17274f;font:17px/1.8 "Microsoft YaHei",sans-serif}
.nb-builder-editor textarea::placeholder{color:#8290b0;opacity:1}
.nb-builder-tools{display:flex;align-items:center;gap:10px;min-height:54px;margin-top:12px}
.nb-builder-attachment{position:relative;display:flex;align-items:center;justify-content:center;flex:none;width:30px;height:36px;margin:0;color:#172b62;cursor:pointer}.nb-builder-attachment svg{width:25px;height:25px}.nb-builder-attachment:focus-within{outline:2px solid #0057ff;outline-offset:3px}
.nb-builder-filename{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#52678c;font-size:12px}
.nb-builder-generate{display:flex;align-items:center;justify-content:center;flex:none;margin:0 0 0 auto;padding:0;width:48px;height:48px;border:0;border-radius:50%;background:#cc0000;color:#fff;cursor:pointer;transition:background .2s,transform .2s}.nb-builder-generate svg{display:block;width:25px;height:25px}.nb-builder-generate:hover{background:#b00000;transform:translateY(-1px)}.nb-builder .nb-builder-generate:focus-visible{outline-color:#cc0000}
.nb-builder-examples{display:flex;align-items:center;justify-content:flex-start;text-align:left;flex-wrap:wrap;gap:10px;margin-top:22px;color:#4d6196;font-size:14px;line-height:1.5}
.nb-builder-examples>span{white-space:nowrap}.nb-builder-examples button{height:30px;padding:0 12px;border:1px solid #c3d8ff;border-radius:25px;background:#ffffffb8;color:#4d6196;font:12px/1.5 "Microsoft YaHei",sans-serif;cursor:pointer;white-space:nowrap}.nb-builder-examples button:hover{border-color:#0057ff;color:#0057ff;background:#fff}
.nb-builder button:focus-visible{outline:2px solid #0057ff;outline-offset:3px}.nb-builder-feedback{margin:12px 0 0;color:#c00;font-size:13px;line-height:1.6}.nb-builder [hidden]{display:none!important}
.nb-visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
@media(max-width:1100px){.nb-builder-card{grid-template-columns:180px minmax(0,1fr);gap:22px;padding:24px 20px}.nb-builder-examples{gap:8px}.nb-builder-examples button{padding:0 9px}}
@media(max-width:768px){
 .nb-builder{--nb-builder-radius:8px}
 .nb-builder-card{grid-template-columns:1fr;gap:20px;border-width:8px;padding:18px 12px}.nb-builder-assistant{width:120px;margin:0 auto;padding-top:12px}.nb-builder-hi{width:45px;right:-20px;top:-4px}
 .nb-builder-editor{padding:14px 12px 10px}.nb-builder-editor textarea{height:105px;font-size:14px;line-height:1.7}.nb-builder-tools{gap:5px;margin-top:8px;min-height:40px}.nb-builder-generate{width:40px;height:40px}.nb-builder-generate svg{width:22px;height:22px}.nb-builder-attachment{width:24px}.nb-builder-attachment svg{width:22px;height:22px}
 .nb-builder-examples{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px}.nb-builder-examples>span{grid-column:1/-1;font-size:12px}.nb-builder-examples button{padding:0 3px}
}
@media(max-width:360px){.nb-builder-card{padding:16px 8px}.nb-builder-examples{grid-template-columns:1fr;justify-items:start}.nb-builder-examples button{padding:0 12px}}

/* Real AI customer cases, with the original desktop/mobile preview composition. */
.nb-cases,.nb-cases *{box-sizing:border-box}.nb-cases{background:#fff}.nb-cases .big_title{line-height:1.4}.nb-cases .small_title{line-height:1.7}
.nb-case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));align-items:start;gap:28px 24px}
.nb-case-card{min-width:0;border:1px solid #e0e5ee;background:#fff;text-align:left;box-shadow:0 2px 12px #172a4008;transition:border-color .2s,box-shadow .2s,transform .2s}
.nb-case-link{display:block;color:#333;text-decoration:none}.nb-case-link:hover{filter:none}.nb-case-link:focus-visible{outline:2px solid #c00;outline-offset:3px}
.nb-case-browser{display:flex;align-items:center;gap:5px;height:26px;padding:0 12px;background:#f0f2f6;border-bottom:1px solid #e6eaf0}.nb-case-browser i{display:block;width:6px;height:6px;border-radius:50%;background:#c2cbd8}
.nb-case-devices{position:relative}.nb-case-cover{background:#f4f6f9}.nb-case-cover img{display:block;width:100%;height:auto;margin:0;border:0}
.nb-case-phone{position:absolute;right:12px;bottom:-18px;width:82px;padding:0 4px;background:#f5f5f5;border:1px solid #bbb;border-radius:12px;box-shadow:0 5px 7px #00000016}
.nb-case-speaker{display:block;width:18px;height:2px;margin:10px auto 7px;background:#c4c4c4;border-radius:2px}.nb-case-phone-screen{height:124px;overflow:hidden;background:#fff;border:1px solid #ddd}.nb-case-phone-screen img{display:block;width:100%;height:auto;margin:0}.nb-case-home{display:block;width:12px;height:12px;margin:5px auto;border:1px solid #bbb;border-radius:50%}
.nb-case-caption{padding:28px 18px 18px}.nb-case-caption h3{margin:0;padding:0;color:#333;font:500 16px/1.5 "Microsoft YaHei",sans-serif;overflow-wrap:anywhere}.nb-case-caption p{margin:6px 0 0;color:#66738a;font:14px/1.7 "Microsoft YaHei",sans-serif}
.nb-case-card:focus-within{border-color:#c00;box-shadow:0 8px 24px #172a4012}@media(hover:hover){.nb-case-card:hover{border-color:#c00;box-shadow:0 8px 24px #172a4012;transform:translateY(-3px)}}
.nb-case-no-image{display:flex;align-items:center;justify-content:center;min-height:190px;color:#888;font-size:14px}.nb-case-empty{padding:40px 20px;color:#666;font:14px/1.8 "Microsoft YaHei",sans-serif;text-align:center}
.nb-case-actions{margin-top:36px;text-align:center}.nb-case-actions a{display:inline-flex;align-items:center;justify-content:center;min-width:190px;min-height:48px;padding:10px 38px;border:1px solid #c00;color:#c00;background:#fff;font:16px/1.5 "Microsoft YaHei",sans-serif;text-decoration:none}.nb-case-actions a:hover{background:#c00;color:#fff;filter:none}.nb-case-actions a:focus-visible{outline:2px solid #c00;outline-offset:3px}
@media(max-width:1000px){.nb-case-grid{gap:20px 16px}.nb-case-caption{padding:26px 12px 14px}.nb-case-caption h3{font-size:15px}}
@media(max-width:768px){.nb-case-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 12px}.nb-case-caption{padding:22px 10px 14px}.nb-case-caption h3{font-size:14px}.nb-case-caption p{font-size:12px}.nb-case-browser{height:22px}.nb-case-phone{width:48px;right:6px;bottom:-14px;padding:0 2px;border-radius:7px}.nb-case-speaker{width:12px;height:1px;margin:5px auto 4px}.nb-case-phone-screen{height:72px}.nb-case-home{width:7px;height:7px;margin:3px auto}.nb-case-actions{margin-top:26px}.nb-case-actions a{min-height:42px;font-size:14px}}
@media(max-width:480px){.nb-case-grid{gap:18px 10px}}
@media(prefers-reduced-motion:reduce){.nb-case-card{transition:none}.nb-case-card:hover{transform:none}}
/* Live AI template catalog, using the same heading scale as the other sections. */
.nb-templates,.nb-templates *{box-sizing:border-box}
.nb-templates{background:#ECECEC}.nb-templates .small_title{line-height:1.7}
.nb-template-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));align-items:start;gap:28px 24px;padding:0;list-style:none}
.nb-template-card{min-width:0;margin:0;padding:0;overflow:hidden;border:1px solid #e0e5ee;background:#fff;text-align:left;transition:border-color .2s,box-shadow .2s,transform .2s}
.nb-template-link{display:block;color:#333;text-decoration:none}.nb-template-link:hover{filter:none}
.nb-template-browser{display:flex;align-items:center;gap:5px;height:26px;padding:0 12px;background:#f0f2f6;border-bottom:1px solid #e6eaf0}.nb-template-browser i{display:block;width:6px;height:6px;border-radius:50%;background:#c2cbd8}
.nb-template-cover{display:block;background:#f4f6f9;overflow:hidden}.nb-template-cover img{display:block;width:100%;height:auto;margin:0;border:0}
.nb-template-info{padding:16px 18px}.nb-template-info h3{margin:0;padding:0;color:#333;font:500 16px/1.5 "Microsoft YaHei",sans-serif;overflow-wrap:anywhere}
.nb-template-visual{position:relative}.nb-template-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;background:#0006;opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s}
.nb-template-card:hover .nb-template-overlay,.nb-template-card:focus-within .nb-template-overlay{opacity:1;visibility:visible}
.nb-template-overlay a,.nb-template-overlay button{display:flex;align-items:center;justify-content:center;width:132px;min-height:38px;margin:0;padding:8px 12px;border:1px solid #c00;border-radius:0;background:#fff;color:#c00;font:14px/1.5 "Microsoft YaHei",sans-serif;text-decoration:none;cursor:pointer;white-space:nowrap}
.nb-template-overlay .nb-template-trial{background:#c00;color:#fff}.nb-template-overlay a:hover,.nb-template-overlay button:hover{filter:brightness(.95)}.nb-template-overlay a:focus-visible,.nb-template-overlay button:focus-visible{outline:2px solid #fff;outline-offset:3px}
@media(hover:none),(max-width:768px){.nb-template-overlay{position:static;flex-direction:row;gap:6px;padding:10px 8px 0;background:#fff;opacity:1;visibility:visible}.nb-template-overlay a,.nb-template-overlay button{flex:1;width:auto;min-width:0;min-height:34px;padding:6px 2px;font-size:12px}.nb-template-overlay a:focus-visible,.nb-template-overlay button:focus-visible{outline-color:#c00}}
.nb-template-card:focus-within{border-color:#c00;box-shadow:0 8px 24px #172a4012}.nb-template-link:focus-visible{outline:2px solid #c00;outline-offset:-3px}
@media(hover:hover){.nb-template-card:hover{border-color:#c00;box-shadow:0 8px 24px #172a4012;transform:translateY(-3px)}}
.nb-template-no-image{display:flex;align-items:center;justify-content:center;min-height:190px;color:#888;font-size:14px}
.nb-template-empty{padding:40px 20px;color:#666;font:14px/1.8 "Microsoft YaHei",sans-serif;text-align:center}
.nb-template-actions{margin-top:36px;text-align:center}.nb-template-actions a{display:inline-flex;align-items:center;justify-content:center;min-width:190px;min-height:48px;padding:10px 38px;border:1px solid #c00;color:#c00;background:#fff;font:16px/1.5 "Microsoft YaHei",sans-serif;text-decoration:none}.nb-template-actions a:hover{background:#c00;color:#fff;filter:none}.nb-template-actions a:focus-visible{outline:2px solid #c00;outline-offset:3px}
@media(max-width:1000px){.nb-template-grid{gap:20px 16px}.nb-template-info{padding:12px}.nb-template-info h3{font-size:15px}}
@media(max-width:768px){.nb-template-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 12px}.nb-template-info h3{font-size:14px}.nb-template-actions{margin-top:26px}.nb-template-actions a{min-height:42px;font-size:14px}.nb-template-browser{height:22px}.nb-template-info{padding:12px 10px}}
@media(max-width:480px){.nb-template-info h3{min-height:42px}.nb-template-grid{gap:16px 10px}}
@media(prefers-reduced-motion:reduce){.nb-template-card,.nb-template-overlay{transition:none}.nb-template-card:hover{transform:none}}
/* Choose a website-building method. */
.nb-methods,.nb-methods *{box-sizing:border-box}
.nb-methods{background:#fff}.nb-methods .big_title span{color:#0057ff}
.nb-method-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.nb-method-card{position:relative;display:flex;flex-direction:column;min-width:0;padding:24px 24px 20px;border:1px solid #d8e3f2;background:#fff;text-align:left;color:#101c3b;transition:border-color .25s,box-shadow .25s,transform .25s}
.nb-method-ai{border-color:#cc0000;box-shadow:0 7px 22px #cc00000d;background:linear-gradient(135deg,#fff 35%,#f6faff)}
.nb-method-card:focus-within{border-color:#cc0000;box-shadow:0 10px 28px #cc000018}
@media(hover:hover) and (pointer:fine){.nb-method-card:hover{border-color:#cc0000;box-shadow:0 10px 28px #cc00001c;transform:translateY(-3px)}.nb-method-grid:has(.nb-method-card:not(.nb-method-ai):hover) .nb-method-ai:not(:focus-within){border-color:#d8e3f2;box-shadow:none}}
.nb-method-recommend{position:absolute;top:0;left:0;padding:10px 38px 10px 26px;background:#cc0000;color:#fff;font-size:17px;line-height:22px;clip-path:polygon(0 0,100% 0,86% 100%,0 100%)}
.nb-method-heading{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);align-items:center;gap:14px;min-height:216px;margin:0 0 14px}
.nb-method-heading h3{margin:0 0 12px;padding:0;color:#0b1531;font:500 24px/1.4 "Microsoft YaHei",sans-serif;white-space:nowrap}.nb-method-heading h3 span{color:#0057ff}
.nb-method-heading p{margin:0;color:#4f5e7c;font:14px/1.7 "Microsoft YaHei",sans-serif}
.nb-method-image{display:block;width:100%;height:auto;max-height:216px;object-fit:contain}
.nb-method-thinking{position:relative;width:100%;height:216px;isolation:isolate;pointer-events:none}
.nb-method-thinking .nb-method-robot{position:absolute;bottom:0;left:50%;display:block;width:auto;height:100%;max-width:90%;object-fit:contain;transform:translateX(-50%);transform-origin:50% 90%;animation:nb-method-think 5.6s ease-in-out infinite}
.nb-method-thinking .nb-method-thought{position:absolute;z-index:1;top:0;right:0;display:block;width:26%;max-width:78px;height:auto;opacity:0;transform-origin:15% 90%;animation:nb-method-idea 5.6s ease-in-out infinite;filter:drop-shadow(0 5px 8px #0057ff24)}
@keyframes nb-method-think{0%,30%,100%{transform:translateX(-50%) rotate(0)}10%{transform:translateX(-50%) rotate(-3deg)}20%{transform:translateX(-50%) rotate(2deg)}45%,65%{transform:translate(-50%,-3px) rotate(0)}80%{transform:translateX(-50%) rotate(0)}}
@keyframes nb-method-idea{0%,28%,94%,100%{opacity:0;transform:translateY(8px) scale(.65)}40%{opacity:1;transform:translateY(0) scale(1.08)}50%,76%{opacity:1;transform:translateY(-3px) scale(1)}64%{opacity:1;transform:translateY(1px) scale(1)}86%{opacity:0;transform:translateY(-8px) scale(.94)}}
@media(max-width:1100px) and (min-width:769px){.nb-method-thinking{height:186px}}
@media(max-width:768px){.nb-method-thinking{height:200px}}
@media(max-width:480px){.nb-method-thinking{height:150px}}
@media(prefers-reduced-motion:reduce){.nb-method-card{transition:none}.nb-method-card:hover{transform:none}.nb-method-thinking .nb-method-robot{animation:none}.nb-method-thinking .nb-method-thought{animation:none;opacity:1;transform:none}}
.nb-method-features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(3,auto);grid-auto-flow:column;align-content:start;flex:1;gap:16px 20px;list-style:none;margin:0;padding:0}
.nb-method-features li{display:grid;grid-template-columns:26px minmax(0,1fr);align-content:start;align-items:baseline;gap:4px 8px;min-width:0;margin:0;padding:0;background:none}
.nb-method-features li>div,.nb-method-heading>div{min-width:0;margin:0}
.nb-method-features li>div{display:contents}.nb-method-number{min-width:0;padding:0;border:0;color:#0057ff;font:500 18px/1.5 "Microsoft YaHei",sans-serif}
.nb-method-features h4{margin:0 0 2px;padding:0;color:#101c3b;font:500 16px/1.5 "Microsoft YaHei",sans-serif}
.nb-method-features p{grid-column:1/-1;margin:0;color:#627496;font:14px/1.6 "Microsoft YaHei",sans-serif}
.nb-method-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0 0;padding-top:16px;border-top:1px solid #d8e3f2}
.nb-method-actions a,.nb-method-actions button{display:flex;align-items:center;justify-content:center;gap:14px;min-width:0;min-height:46px;margin:0;padding:10px 8px;border:1px solid #0057ff;border-radius:0;background:#fff;color:#0057ff;font:500 16px/1.5 "Microsoft YaHei",sans-serif;text-align:center;text-decoration:none;cursor:pointer}
.nb-method-actions span{font-size:24px;line-height:1}.nb-method-actions .nb-method-primary{background:#cc0000;border-color:#cc0000;color:#fff}.nb-method-actions .nb-method-consult{border-color:#cc0000;color:#cc0000}
.nb-method-actions a:hover,.nb-method-actions button:hover{box-shadow:0 3px 12px #152e6514;filter:brightness(.96)}.nb-method-actions a:focus-visible,.nb-method-actions button:focus-visible{outline:2px solid #0057ff;outline-offset:4px}
@media(max-width:1100px) and (min-width:769px){.nb-method-card{padding:22px 18px 20px}.nb-method-heading{gap:10px;min-height:180px}.nb-method-heading h3{font-size:24px}.nb-method-heading p{font-size:14px}.nb-method-features{gap:14px 12px}.nb-method-features li{gap:4px 6px}.nb-method-number{font-size:18px}.nb-method-features h4{font-size:15px}.nb-method-features p{font-size:12px}.nb-method-actions{gap:10px}.nb-method-actions a,.nb-method-actions button{font-size:15px;gap:8px}}
@media(max-width:768px){
 .nb-method-grid{grid-template-columns:1fr;gap:24px}.nb-method-card{padding:22px 22px 20px}.nb-method-heading{min-height:190px;margin:0 0 16px}.nb-method-heading h3{font-size:24px}.nb-method-heading p{font-size:14px}.nb-method-image{max-height:200px}
 .nb-method-features{gap:16px}.nb-method-features li{gap:4px 6px}.nb-method-number{font-size:18px}.nb-method-features h4{font-size:16px}.nb-method-features p{font-size:13px}.nb-method-actions a,.nb-method-actions button{font-size:15px;min-height:46px;gap:8px}
}
@media(max-width:480px){
 .nb-method-card{padding:22px 16px 18px}.nb-method-recommend{font-size:14px;line-height:18px;padding:8px 30px 8px 18px}.nb-method-heading{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:10px;min-height:160px;margin:0 0 14px}.nb-method-heading h3{font-size:22px}.nb-method-heading p{font-size:13px}.nb-method-image{max-height:160px}
 .nb-method-features{gap:14px 12px}.nb-method-features li{grid-template-columns:20px minmax(0,1fr);gap:4px}.nb-method-number{margin:0;font-size:16px;line-height:1.5}.nb-method-features h4{font-size:14px}.nb-method-features p{font-size:12px}.nb-method-actions{gap:10px;margin-top:16px;padding-top:14px}.nb-method-actions a,.nb-method-actions button{font-size:13px;gap:6px;padding:8px 4px}.nb-method-actions span{font-size:19px}
}
@media(max-width:360px){.nb-method-heading h3{font-size:22px}.nb-method-card{padding:22px 12px 16px}.nb-method-actions a,.nb-method-actions button{font-size:12px;gap:4px}.nb-method-features h4{font-size:13px}}

/* FAQ and live weekly updates share the homepage's content width and spacing. */
.nb-knowledge{background:#fff;color:#333}
.nb-knowledge-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:64px;text-align:left}.nb-knowledge>.nb-knowledge-grid{align-items:start}
.nb-knowledge .big_title{text-align:left;margin:0 0 32px;line-height:1.35}.nb-faq .big_title span{color:#0057ff}
.nb-faq,.nb-weekly{min-width:0;margin:0}.nb-faq-list{border-top:1px solid #ececec}
.nb-faq details{border-bottom:1px solid #ececec}
.nb-faq summary{display:flex;align-items:baseline;gap:14px;padding:20px 0;list-style:none;cursor:pointer}
.nb-faq summary::-webkit-details-marker{display:none}.nb-faq summary::after{content:'+';align-self:center;margin-left:auto;flex:0 0 20px;text-align:center;font:24px/1 Arial;color:#888}
.nb-faq details[open] summary::after{content:'−';color:#0057ff}.nb-faq details[open] h3,.nb-faq summary:hover h3{color:#0057ff}
.nb-faq-number{flex:0 0 24px;color:#0057ff;font:500 16px/1.6 Arial,sans-serif}
.nb-faq h3{margin:0;padding:0;font:500 16px/1.65 "Microsoft YaHei",sans-serif;color:#333}
.nb-faq details>p{margin:0;padding:0 20px 22px 38px;color:#666;font:12px/1.65 "Microsoft YaHei",sans-serif}
.nb-weekly-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:32px}.nb-weekly-heading .big_title{margin-bottom:0}.nb-weekly-heading>a{flex-shrink:0;color:#666;font-size:14px;line-height:1.5}.nb-weekly-heading>a:hover{color:#cc0000}
.nb-weekly-list{display:grid;gap:20px}.nb-weekly-card{margin:0;border:1px solid #ececec;background:#fff;transition:border-color .2s,box-shadow .2s}
.nb-weekly-card:hover{border-color:#cc0000;box-shadow:0 6px 20px #00000008}
.nb-weekly-link{display:block;padding:24px;color:#333;text-decoration:none}
.nb-weekly-date{display:block;margin-bottom:12px;color:#999;font:14px/1.5 "Microsoft YaHei",sans-serif}
.nb-weekly-card h3{margin:0 0 12px;padding:0;color:#333;font:500 18px/1.65 "Microsoft YaHei",sans-serif}
.nb-weekly-card p{margin:0 0 18px;color:#666;font:14px/1.85 "Microsoft YaHei",sans-serif;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.nb-weekly-read{color:#cc0000;font-size:14px}.nb-weekly-status{margin:0;padding:32px 24px;border:1px solid #ececec;color:#666;font:14px/1.8 "Microsoft YaHei",sans-serif}
.nb-faq summary:focus-visible,.nb-weekly a:focus-visible{outline:2px solid #0057ff;outline-offset:4px}
.nb-weekly-controls{display:flex;align-items:center;gap:14px;margin:0;white-space:nowrap}.nb-weekly-controls a,.nb-weekly-toggle{font:12px/1.5 "Microsoft YaHei",sans-serif;color:#666}.nb-weekly-toggle{padding:0;border:0;background:none;cursor:pointer}.nb-weekly-toggle[hidden]{display:none}.nb-weekly-controls a:hover,.nb-weekly-toggle:hover{color:#cc0000}
.nb-weekly-list{display:block;border-top:1px solid #ececec}.nb-weekly-viewport{height:calc(var(--nb-weekly-row)*3);overflow:hidden}.nb-weekly-track{margin:0}
.nb-weekly-card{height:var(--nb-weekly-row);box-sizing:border-box;border:0;border-bottom:1px solid #ececec}.nb-weekly-card:hover{box-shadow:none;border-color:#ececec}
.nb-weekly-link{box-sizing:border-box;height:100%;display:flex;flex-direction:column;justify-content:center;padding:20px 0}.nb-weekly-date{margin-bottom:12px;font-size:12px}.nb-weekly-card h3{margin:0;font-size:16px;line-height:1.7}.nb-weekly-link:hover h3{color:#cc0000}
.nb-weekly-link:focus-visible{outline-offset:-3px}.nb-weekly-toggle:focus-visible{outline:2px solid #0057ff;outline-offset:3px}
@media(max-width:1100px){.nb-knowledge-grid{gap:32px}}
@media(max-width:768px){.nb-knowledge-grid{grid-template-columns:1fr;gap:40px}.nb-knowledge .big_title{margin-bottom:24px}.nb-weekly-heading{margin-bottom:24px}.nb-weekly-heading .big_title{margin-bottom:0}.nb-faq summary{padding:16px 0;gap:10px}.nb-faq h3{font-size:15px}.nb-faq details>p{padding:0 0 18px 34px;font-size:12px}.nb-weekly-link{padding:20px}.nb-weekly-card h3{font-size:17px}.nb-weekly-list{gap:16px}}
@media(max-width:768px){.nb-weekly-link{padding:14px 0}.nb-weekly-card h3{font-size:15px}.nb-weekly-date{margin-bottom:8px}.nb-weekly-controls{gap:12px}}

.nb-knowledge .big_title{font-size:24px}
.nb-weekly-card .nb-weekly-summary{margin:8px 0 0;font:12px/1.6 "Microsoft YaHei",sans-serif;-webkit-line-clamp:2;flex-shrink:0}
.nb-weekly-card h3{flex-shrink:0}.nb-weekly-date{flex-shrink:0}

/* Preserve the original strength-card appearance after semantic heading changes. */
.advantage_box .advantage_content h3.title{margin:0;font-weight:normal}