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form{display:flex;flex-direction:column;gap:18px}.input-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}.contact-form-card label{display:flex;flex-direction:column;gap:8px;font-size:13px;font-weight:700;color:#314360}.contact-form-card input:not([type=checkbox]),.contact-form-card select,.contact-form-card textarea{padding:13px 14px;border:1px solid #d9e2f0;background:#fcfdff;border-radius:10px;outline:0;min-height:49px;color:#1c304d;font-size:14px;width:100%;transition:border-color .2s}.contact-form-card input:focus,.contact-form-card select:focus,.contact-form-card textarea:focus{border-color:#4789f1;box-shadow:0 0 0 3px #3b82f618}.contact-form-card textarea{resize:vertical}.contact-form-card .consent-line{display:flex;flex-direction:row;align-items:flex-start;font-size:12px;color:#748299;font-weight:450;line-height:1.8;gap:10px}.consent-line input{margin:5px 0 0;accent-color:#3b82f6;flex-shrink:0}.consent-line a{color:#2775e8;text-decoration:underline}.trap-field{position:absolute;left:-9999px;opacity:0;pointer-events:none}.btn-submit{width:100%;min-height:53px}.form-hint{font-size:12px;color:#8998ad;margin:0}.form-feedback{display:none;border-radius:10px;padding:10px 13px;font-size:13px}.form-feedback.success{display:block;background:#effaf4;color:#1b8758}.form-feedback.error{display:block;background:#fff2f0;color:#b74940}.contact-aside{display:flex;flex-direction:column;gap:20px}.contact-info-card{padding:30px;border-radius:20px;background:#edf5ff;border:1px solid #dae9ff}.contact-info-card h3{font-size:23px;line-height:1.45}.contact-info-card p{font-size:14px;color:#667993}.contact-info-card.soft{background:#f8faff}.demo-page-section{padding-top:50px}.demo-warn{display:flex;align-items:flex-start;gap:10px;border-radius:12px;background:#fff9e8;border:1px solid #f9e5a5;padding:14px 17px;color:#937735;font-size:13px;line-height:1.8;margin-bottom:20px}.demo-warn .ic{width:19px;height:19px;flex-shrink:0;margin-top:2px}.demo-workspace{display:grid;grid-template-columns:250px 1fr;min-height:610px;border:1px solid #e2e9f4;box-shadow:var(--shadow);border-radius:22px;overflow:hidden;background:#fff}.demo-menu{padding:25px 16px;background:#f7faff;border-right:1px solid #e5ebf5}.demo-menu h3{margin:0 0 22px 11px;font-size:15px}.demo-tab{border:0;width:100%;display:flex;align-items:center;gap:10px;text-align:left;padding:14px 13px;background:transparent;color:#64748f;border-radius:10px;font-size:14px;margin:4px 0;font-weight:650}.demo-tab .ic{height:18px;width:18px}.demo-tab.active{background:#e5f0ff;color:#2e72d9}.demo-tab:hover{background:#edf5ff}.demo-note{font-size:11px;color:#96a5ba;line-height:1.7;margin:34px 12px;display:flex;gap:8px}.demo-note .ic{width:16px;height:16px}.demo-chat-area{min-width:0;display:flex;flex-direction:column}.demo-chat-top{padding:20px 24px;border-bottom:1px solid #e9eff7;display:flex;justify-content:space-between;align-items:center;gap:10px}.demo-chat-top b{font-size:16px;display:block}.demo-chat-top span{display:block;color:#95a2b6;font-size:12px}.demo-live-tag{border:1px solid #cde8db;background:#f0faf4;color:#218756 !important;padding:4px 8px;border-radius:20px;white-space:nowrap}.demo-messages{display:flex;flex-direction:column;gap:16px;padding:26px;min-height:350px;max-height:470px;overflow-y:auto;flex:1;background:#fff}.bubble{display:flex;align-items:flex-start;gap:11px;max-width:88%;font-size:14px;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere}.bubble>div{padding:16px 19px;border-radius:14px;background:#f5f8fc;color:#485b79;min-width:0}.bubble.assistant .bubble-avatar{background:#3B82F6;color:#fff;display:grid;place-items:center;width:28px;height:28px;border-radius:9px;flex-shrink:0}.bubble.user{align-self:flex-end}.bubble.user>div{background:#e8f2ff;border-radius:14px 14px 3px 14px}.bubble small{display:block;font-size:11px;color:#8ca0bd;margin-top:8px}.demo-composer{border-top:1px solid #e9eff7;padding:17px 25px}.prompt-suggestions{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:15px}.prompt-suggestions button{border:1px solid #d9e5f8;background:#f7faff;color:#4976b0;border-radius:30px;padding:6px 12px;font-size:12px}.prompt-suggestions button:hover{background:#e7f2ff}.demo-composer form{display:flex;align-items:center;border:1px solid #dbe4f2;border-radius:13px;padding:5px 5px 5px 15px}.demo-composer input{flex:1;min-width:0;border:0;outline:0;padding:10px 0;color:#223c60;font-size:14px}.demo-composer form button{width:37px;height:37px;border:0;border-radius:9px;display:grid;place-items:center;color:#fff;background:#3b82f6}.demo-disclaimer{font-size:11px;color:#98a5b8;margin-top:9px}.policy-body{max-width:850px;margin:auto;color:#5e708a;font-size:15px;line-height:2.15}.policy-body h2{font-size:22px;color:#1c2b45;margin:31px 0 12px}.policy-body h2:first-child{margin-top:0}.policy-date{font-size:12px;color:#99a6bc}.not-found{text-align:center;min-height:65vh}.not-found-number{font-size:110px;line-height:1.3;letter-spacing:-8px;color:#3b82f6;font-weight:900}.not-found h1{font-size:32px}.not-found p{color:#8794a8;margin-bottom:28px}
@media(max-width:1160px){.desktop-nav{gap:14px}.desktop-nav a{font-size:12px}.brand{width:167px}.brand img{width:162px}.hero-copy h1{font-size:48px}.nav-inner{gap:10px}.nav-cta .btn{font-size:12px;padding:8px 11px}.float-card-a{left:0}.float-card-b{right:0}}
@media(max-width:940px){.desktop-nav,.nav-cta{display:none}.menu-toggle{display:grid;place-items:center;margin-left:auto}.nav-inner{min-height:72px}.mobile-menu{display:none;position:absolute;top:72px;left:0;right:0;padding:12px max(24px,calc((100% - 1200px)/2));background:#fff;box-shadow:0 15px 30px #12305a18;border-bottom:1px solid #e6edf7}.mobile-menu.open{display:block}.mobile-menu a{display:flex;justify-content:space-between;align-items:center;padding:13px 8px;border-bottom:1px solid #f1f4fa;font-size:14px}.mobile-menu a:last-child{color:#286de2;font-weight:800}.hero-grid{grid-template-columns:1fr;gap:20px}.home-hero{padding-top:65px}.hero-copy{padding-bottom:10px}.hero-copy h1{font-size:52px}.hero-visual{max-width:660px;margin:0 auto}.four-grid{grid-template-columns:repeat(2,1fr)}.product-grid{grid-template-columns:repeat(2,1fr)}.product-grid>.feature-card,.product-grid>.feature-card:nth-child(4),.product-grid>.feature-card:nth-child(5){grid-column:auto}.split-layout{gap:45px}.industry-grid{grid-template-columns:repeat(2,1fr)}.footer-links{gap:30px}.pricing-grid{gap:11px}.price-card{padding:25px 17px}.price-num{font-size:22px}}
@media(max-width:680px){body{font-size:15px}.container{width:min(100% - 36px,1200px)}.brand img{width:164px}.home-hero{padding:51px 0 60px}.hero-ribbon{font-size:11px}.hero-copy h1{font-size:clamp(39px,9vw,52px);white-space:normal;letter-spacing:-1px}.lead{font-size:15px}.hero-actions{gap:9px}.hero-actions .btn{min-height:46px;font-size:13px;padding:9px 14px}.hero-trust{margin-top:25px}.hero-visual{min-height:348px}.dash-window{transform:none}.dash-top{height:30px}.dash-top span{font-size:9px}.dash-content{grid-template-columns:85px 1fr;min-height:257px}.dash-sidebar{padding:8px 4px}.side-logo{font-size:7px;gap:2px;padding:4px 3px 11px}.side-logo img{width:16px}.side-link{gap:3px;font-size:7px;padding:6px 2px;margin:3px 0}.side-link .ic{width:10px;height:10px}.side-end{font-size:6px}.dash-main{padding:12px 9px}.dash-greeting{font-size:11px}.dash-greeting small{font-size:7px}.dash-metrics{gap:4px}.dash-metrics>div{padding:6px}.dash-metrics span,.dash-metrics em{font-size:7px}.dash-metrics strong{font-size:13px}.dash-chat{padding:7px;margin-top:7px}.chat-head{font-size:9px}.chat-head span{font-size:7px}.chat-question{padding:5px;font-size:8px;margin:7px 0}.chat-answer,.chat-answer b{font-size:8px}.chat-answer p{margin:2px 0;font-size:7px}.source-pill{font-size:7px}.float-card{font-size:8px;padding:7px 9px}.float-card-a{bottom:5px;left:-5px}.float-card-b{top:6px;right:-8px}.section{padding:69px 0}.section-heading{margin-bottom:30px}.section-heading h2,.split-copy h2{font-size:28px}.section-heading p,.split-copy>p{font-size:14px}.four-grid,.three-grid,.agent-grid,.product-grid,.industry-grid,.steps-grid{grid-template-columns:1fr;gap:12px}.feature-card{padding:25px 23px;min-height:190px}.feature-icon{margin-bottom:13px}.feature-card h3{font-size:18px}.split-layout{grid-template-columns:1fr;gap:27px}.reverse .deploy-art{order:2}.reverse .split-copy{order:1}.flow-card{padding:24px 19px}.agent-card{min-height:235px;padding:22px}.agent-card h3{margin-top:13px}.industry-card{min-height:215px}.steps-grid{grid-template-columns:repeat(2,1fr)}.step-card{padding:19px 17px}.step-card strong{font-size:20px}.step-card h3{font-size:14px}.step-card p{font-size:12px}.cta-panel{padding:32px 24px;flex-direction:column;align-items:flex-start;gap:23px}.cta-panel h2{font-size:24px}.cta-panel p{font-size:13px}.cta-actions .btn{min-height:44px;padding:9px 13px;font-size:13px}.site-footer{padding:54px 0 88px}.footer-top{flex-direction:column;gap:38px;padding-bottom:30px}.footer-brand{width:auto}.footer-links{grid-template-columns:repeat(3,1fr);gap:12px}.footer-links h4{font-size:12px}.footer-links a{font-size:12px}.footer-bottom{flex-direction:column;align-items:flex-start}.footer-note{font-size:10px}.mobile-sticky-actions{position:fixed;z-index:40;bottom:0;left:0;right:0;display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:11px 18px max(11px,env(safe-area-inset-bottom));background:#fffffff5;border-top:1px solid #e8edf6;box-shadow:0 -8px 25px #11244910}.mobile-sticky-actions a{display:flex;align-items:center;justify-content:center;gap:7px;border:1px solid #d4e3f8;border-radius:10px;color:#356ab4;font-size:13px;font-weight:800;padding:9px}.mobile-sticky-actions a:last-child{background:#3b82f6;color:#fff;border-color:#3b82f6}.mobile-sticky-actions .ic{width:15px;height:15px}.page-hero{padding:30px 0 52px}.breadcrumb{margin-bottom:35px}.page-hero h1{font-size:34px}.page-hero p{font-size:15px}.process-flow{flex-direction:column;gap:7px}.process-flow>.ic{transform:rotate(90deg)}.process-flow span{width:100%;text-align:center}.deployment-targets{grid-template-columns:1fr}.deployment-wide{padding:22px 16px}.connect-lines{letter-spacing:26px}.pricing-grid{grid-template-columns:1fr;gap:15px}.price-card{padding:29px}.price-num{font-size:25px}.article-wrap{grid-template-columns:1fr;gap:18px}.article-side{position:static}.contact-layout{grid-template-columns:1fr}.contact-form-card{padding:25px 19px}.input-row{grid-template-columns:1fr}.demo-workspace{display:block;min-height:auto}.demo-menu{display:flex;overflow:auto;gap:9px;align-items:center;padding:12px}.demo-menu h3,.demo-note{display:none}.demo-tab{flex-shrink:0;width:auto;font-size:12px;padding:9px 11px;white-space:nowrap}.demo-tab .ic{width:15px;height:15px}.demo-chat-top{padding:14px}.demo-messages{padding:16px;min-height:315px;max-height:410px}.bubble{max-width:98%;font-size:13px}.bubble>div{padding:11px}.demo-composer{padding:12px}.demo-warn{font-size:12px}.about-identity img{max-height:320px}.not-found-number{font-size:86px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* V3 conversion-first visual system */
.problem-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.problem-choice{display:flex;flex-direction:column;gap:9px;padding:23px;border:1px solid #e3e9f5;border-radius:18px;background:#fff;color:#14223b;text-decoration:none;min-height:190px;transition:transform .2s,border-color .2s,box-shadow .2s}
.problem-choice:hover,.problem-choice:focus-visible{border-color:#3b82f6;transform:translateY(-3px);box-shadow:0 12px 30px #1e63e51a}
.problem-icon{display:grid;place-items:center;width:43px;height:43px;border-radius:11px;color:#3b82f6;background:#edf4ff}
.problem-choice strong{font-size:16px;line-height:1.4}.problem-choice>span:not(.problem-icon){font-size:13px;color:#64748b}.problem-choice b{margin-top:auto;font-size:12px;color:#2563eb}
.decision-section{background:#f8faff}
.selfcheck-grid{display:grid;gap:13px}.decision-check{background:#fff;border:1px solid #e7eef8;padding:clamp(20px,4vw,44px);border-radius:22px;max-width:980px;margin:auto}
.selfcheck-row{display:flex;gap:16px;align-items:center;padding:18px;border:1px solid #e7eef8;border-radius:12px;text-decoration:none;color:#14223b}.selfcheck-row:hover{background:#f5f9ff;border-color:#3b82f6}.selfcheck-row>span{color:#3b82f6}.selfcheck-row>div{flex:1}.selfcheck-row p{margin:4px 0 0;color:#687991;font-size:13px}.selfcheck-row>b{color:#3b82f6;font-size:12px}
.assessment-actions{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}.delivery-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;max-width:1100px;margin:auto}.delivery-step{display:flex;gap:20px;background:white;border:1px solid #e7eef8;border-radius:17px;padding:25px}.delivery-step>b{font-size:32px;color:#3b82f6}.delivery-step h3{margin:0 0 5px}.delivery-step p{color:#64748b;font-size:14px;margin:0}
.narrow-doc{max-width:860px}.print-list{background:#fff;border:1px solid #e7eef8;border-radius:20px;padding:25px}.print-check-group{margin:0 0 24px}.print-check-group h2{font-size:19px}.print-check-group label{display:block;padding:8px 0;color:#334155}.print-check-group input{margin-right:10px;accent-color:#3b82f6}
.consult-interest-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:20px 0}.interest-choice{border:1px solid #dce7f7;background:#fff;color:#14223b;border-radius:12px;padding:18px;text-align:left;display:flex;justify-content:space-between;font:inherit;cursor:pointer}.interest-choice:hover,.interest-choice:focus-visible{border-color:#3b82f6;background:#f3f8ff}.interest-choice span{color:#3b82f6}.consult-step-one h3{font-size:20px;margin:8px 0}.consult-step-one p,.step-tip{font-size:13px;color:#64748b}.text-back{border:0;background:transparent;color:#2563eb;padding:8px 0;font-weight:600;cursor:pointer}.is-enhanced .consult-step-two{display:none}.is-enhanced.show-details .consult-step-two{display:block}.is-enhanced.show-details .consult-step-one{display:none}
@media(max-width:870px){.problem-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.delivery-steps{grid-template-columns:1fr}}
@media(max-width:600px){.problem-grid,.consult-interest-grid{grid-template-columns:1fr}.problem-choice{min-height:auto;padding:17px}.selfcheck-row{gap:9px}.selfcheck-row>b{max-width:70px}.assessment-actions{flex-direction:column}.assessment-actions .btn{justify-content:center}.delivery-step{padding:16px}}
@media print{.site-header,.site-footer,.mobile-sticky-actions,.dd-consult-root,.assessment-actions,.page-hero .breadcrumb{display:none!important}.print-list{border:0}.print-check-group{break-inside:avoid}.page-hero{padding:12px 0}}

/* 点点AI v4: warm modern clean enterprise visual system */
.dd-hero-slider{position:relative;height:clamp(430px,42vw,570px);background:#eff7ff;overflow:hidden;border-bottom:1px solid #e0eefa}
.dd-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transform:scale(1.02);transition:opacity .72s ease,transform 4s ease,visibility .7s;background-image:linear-gradient(90deg,rgba(249,252,255,.92) 0%,rgba(242,249,255,.89) 27%,rgba(233,246,255,.22) 62%,rgba(255,255,255,0) 100%),var(--slide-img);background-repeat:no-repeat;background-size:cover;background-position: center;display:flex;align-items:center}
.dd-slide.is-active{opacity:1;visibility:visible;transform:scale(1)}.dd-slide-content{position:relative;z-index:2;width:100%}.dd-slide-content h1,.dd-slide-content h2{font-size:clamp(32px,4.2vw,63px);line-height:1.22;font-weight:850;color:#0e254a;letter-spacing:-1.6px;margin:18px 0 16px;max-width:800px}.dd-slide-content h1 span,.dd-slide-content h2 span{color:#3b82f6}.dd-slide-content p{font-size:clamp(15px,1.35vw,18px);line-height:1.85;color:#43607d;max-width:570px;margin-bottom:24px}.dd-slide-kicker{display:inline-block;padding:9px 14px;border:1px solid #c7e2ff;border-radius:99px;background:#ffffffb8;color:#2563eb;font-size:12px;font-weight:700}.dd-slide-actions{display:flex;align-items:center;gap:13px;flex-wrap:wrap}.dd-slider-controls{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);z-index:6;display:flex;align-items:center;gap:25px}.dd-slider-controls>button{height:35px;width:35px;border-radius:50%;color:#2463eb;background:#fff;border:1px solid #d6e6fb;cursor:pointer;font-size:24px;line-height:1}.dd-slide-dots{display:flex;gap:9px;align-items:center}.dd-slide-dots button{height:8px;width:8px;border:0;border-radius:999px;background:#96b9e6;cursor:pointer}.dd-slide-dots button.is-active{width:26px;background:#3b82f6}.dd-page-hero{overflow:hidden}.dd-page-hero>.container{position:relative;min-height:300px;display:flex;align-items:center}.dd-page-hero .page-hero-wrap{position:relative;z-index:2;max-width:68%;padding-block:10px}.dd-page-art{position:absolute;right:-8%;bottom:0;top:0;width:54%;height:100%;overflow:hidden;mask-image:linear-gradient(to right,transparent,#000 36%);opacity:.95}.dd-page-art img{width:100%;height:100%;object-fit:cover;object-position:72% center}.dd-industry-art{width:100%;height:130px;object-fit:cover;border-radius:12px;margin-bottom:12px}.industry-card:hover .dd-industry-art{filter:saturate(1.15)}.dd-contact-strip{background:linear-gradient(100deg,#eef6ff,#f5fffe);border:1px solid #dbe9fa;padding:16px 22px;border-radius:14px;display:none;gap:18px;align-items:center;justify-content:space-between;margin:20px auto}.dd-contact-strip.is-visible{display:flex}.dd-contact-strip a{text-decoration:none;color:#2563eb;font-weight:700}.dd-contact-strip span{font-size:13px;color:#475569}.dd-contact-strip .dd-wechat-contact{display:flex;align-items:center;gap:7px}.dd-contact-details{font-size:14px;padding:15px;border:1px solid #e0e7f4;border-radius:12px;margin:15px 0;background:#f7fbff}.dd-qr-mini{max-width:145px;aspect-ratio:1;border-radius:10px;border:1px solid #e4e9ef}.settings-form,.knowledge-form{display:grid;gap:14px;max-width:680px}.settings-form label,.knowledge-form label{display:grid;gap:6px;font-size:13px;font-weight:700;color:#475569}.settings-form input,.knowledge-form input,.knowledge-form select,.knowledge-form textarea{width:100%}.admin-checkbox{display:flex!important;align-items:center;gap:12px}.admin-checkbox input{width:auto!important}.wechat-preview{margin-top:15px;width:190px;max-width:100%;aspect-ratio:1;object-fit:contain}.wechat-preview[hidden]{display:none}.dd-page-hero + .section{position:relative}@media(max-width:780px){.dd-hero-slider{height:530px}.dd-slide{background-position:65% center;background-image:linear-gradient(90deg,rgba(249,252,255,.99),rgba(246,251,255,.91) 60%,rgba(242,248,255,.46)),var(--slide-img)}.dd-slide-content{padding-bottom:55px}.dd-slide-content h1,.dd-slide-content h2{max-width:94%;font-size:34px}.dd-slide-content p{max-width:88%;font-size:14px}.dd-page-hero .page-hero-wrap{max-width:100%}.dd-page-art{opacity:.16;width:100%;right:0;mask-image:linear-gradient(to right,transparent,#000)}.dd-contact-strip.is-visible{display:grid;gap:8px}.dd-industry-art{height:115px}}
@media(prefers-reduced-motion:reduce){.dd-slide{transition:none;transform:none}.dd-slider-controls{display:none}}

#dd-sales-root{font-family:inherit;position:relative;z-index:100}#dd-sales-root *{box-sizing:border-box}.dd-sales-fab{position:fixed;bottom:25px;right:25px;background:#3b82f6;color:#fff;display:flex;align-items:center;gap:10px;border:none;border-radius:99px;padding:12px 20px;box-shadow:0 11px 28px #3b82f655;font-size:14px;font-weight:700;cursor:pointer;z-index:102;transition:transform .16s}.dd-sales-fab:hover{transform:translateY(-2px)}.dd-sales-fab-icon,.dd-sales-avatar{display:block;letter-spacing:-8px;padding-right:8px;color:white;font-size:19px}.dd-sales-fab-icon i,.dd-sales-avatar i{color:#5ce4fb;font-style:normal;position:relative;top:3px}.dd-sales-panel{position:fixed;z-index:103;bottom:89px;right:26px;width:min(400px,calc(100vw - 30px));height:min(670px,calc(100dvh - 115px));border-radius:22px;overflow:hidden;background:#fff;border:1px solid #e0eaf6;box-shadow:0 22px 75px #15346b30;display:flex;flex-direction:column;color:#183253}.dd-sales-panel[hidden],.dd-sales-lead[hidden],.dd-sales-body[hidden],.dd-sales-compose[hidden],.dd-sales-chips[hidden]{display:none!important}.dd-sales-head{display:flex;align-items:center;gap:10px;background:linear-gradient(115deg,#3377f8,#0cb8d9);padding:16px;color:#fff}.dd-sales-head strong{font-size:15px;display:block}.dd-sales-head small{font-size:11px;color:#e8f6ff;display:block}.dd-sales-avatar{border:1px solid #fff6;padding:5px 12px 5px 3px;border-radius:11px}.dd-sales-close{margin-left:auto;background:#ffffff24;border:0;border-radius:7px;padding:7px 10px;color:#fff;cursor:pointer}.dd-sales-body{flex:1;overflow:auto;padding:15px;background:#f8faff;display:flex;flex-direction:column;gap:14px}.dd-sales-bubble{max-width:92%;line-height:1.65;display:grid;gap:5px}.dd-sales-bubble>div{padding:12px 14px;border-radius:14px;font-size:13px;white-space:pre-wrap;overflow-wrap:anywhere;background:#fff;border:1px solid #e7eef8}.dd-sales-bubble.user{align-self:end}.dd-sales-bubble.user>div{background:#3b82f6;color:#fff;border-color:#3b82f6}.dd-sales-bubble small{font-size:10px;color:#7b8aa2;padding-left:3px}.dd-sales-chips{padding:10px 12px;display:flex;flex-wrap:wrap;gap:6px;max-height:80px;overflow:auto}.dd-sales-chips button{border:1px solid #c8daf9;border-radius:20px;padding:6px 10px;color:#2563eb;background:#f3f7ff;font-size:11px;cursor:pointer}.dd-sales-compose{display:flex;gap:8px;margin:0 12px 10px;align-items:end}.dd-sales-compose textarea{border:1px solid #d7e0ee;border-radius:12px;resize:none;min-height:49px;max-height:90px;flex:1;outline-color:#3b82f6;padding:10px;font:inherit;font-size:13px}.dd-sales-compose button,.dd-lead-submit{background:#3b82f6;color:#fff;font-size:12px;font-weight:700;padding:12px;border:0;border-radius:9px;cursor:pointer}.dd-sales-actions{padding:8px 14px 10px;border-top:1px solid #edf1f7;display:flex;align-items:center;justify-content:space-between;gap:10px}.dd-sales-actions button{color:#2563eb;background:#eaf2ff;border:0;border-radius:8px;padding:8px 10px;font-size:12px;font-weight:700;cursor:pointer}.dd-sales-actions a{color:#667992;text-decoration:none;font-size:11px}.dd-sales-panel footer{padding:6px;text-align:center;font-size:10px;color:#8190a7;border-top:1px solid #edf1f7;background:white}.dd-sales-lead{padding:14px 16px;overflow:auto;flex:1;background:#fff;display:grid;gap:9px}.dd-sales-lead-head{display:flex;align-items:center;justify-content:space-between}.dd-sales-lead-head button{background:transparent;border:0;color:#2563eb;cursor:pointer}.dd-sales-lead p{font-size:11px;color:#64748b;margin:2px 0}.dd-sales-lead>label:not(.dd-consent){font-size:12px;color:#334155;font-weight:700;display:grid;gap:4px}.dd-sales-lead input,.dd-sales-lead select,.dd-sales-lead textarea{padding:9px 11px;font-size:12px;width:100%;border:1px solid #d7e0ee;border-radius:8px;font-family:inherit}.dd-sales-lead textarea{resize:vertical}.dd-consent{display:flex;gap:8px;align-items:start;font-size:11px;color:#526078}.dd-consent input{width:16px!important;flex-shrink:0}.dd-consent a{color:#2563eb}.dd-trap{position:absolute;left:-10000px;opacity:0}.dd-sales-notice{font-size:12px;color:#217742;white-space:pre-wrap;overflow-wrap:anywhere}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:680px){.dd-sales-fab{bottom:75px;right:13px;padding:11px 13px}.dd-sales-panel{inset:0;width:100vw;height:100dvh;max-width:none;border-radius:0;z-index:110}.dd-sales-head{padding-top:max(16px,env(safe-area-inset-top))}.dd-sales-panel footer{padding-bottom:max(8px,env(safe-area-inset-bottom))}}@media(prefers-reduced-motion:reduce){.dd-sales-fab{transition:none}}

.dd-model-consent{display:flex;gap:7px;align-items:start;padding:8px 14px;color:#5b6a84;font-size:10px;border-bottom:1px solid #e9eff7}.dd-model-consent[hidden]{display:none!important}.dd-model-consent input{flex-shrink:0;margin-top:2px}.dd-model-consent a{color:#2563eb}
.dd-wechat-transfer{padding:14px 18px;border-top:1px solid #dce8f8;background:#f4fbff;font-size:13px}.dd-wechat-transfer[hidden]{display:none}.dd-wechat-transfer p{font-size:12px;color:#64748b}.dd-wechat-transfer #dd-wechat-actions{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px}.dd-wechat-transfer img{border:1px solid #dbeafe;border-radius:10px;object-fit:contain;background:white}.dd-wechat-transfer a{background:#3b82f6;color:white;padding:10px 18px;border-radius:8px;text-decoration:none}.dd-wechat-transfer button{background:none;border:1px solid #dce8f8;border-radius:8px;padding:8px;color:#2563eb;cursor:pointer}

/* 点点AI V4.1: compact desktop typography, readable mobile hero, top anchored menu. */
:root{--dd-header-height:68px}
body{font-size:15px;line-height:1.65;overflow-x:clip}
.site-header{z-index:80}
.nav-inner{min-height:var(--dd-header-height);gap:18px}
.brand{width:166px;flex-shrink:0}
.brand img{width:166px;max-width:100%;height:auto}
.desktop-nav{gap:clamp(10px,1.1vw,19px)}
.desktop-nav a{font-size:13px}
.nav-cta .btn{min-height:39px;padding:8px 14px;font-size:12px}
.btn{min-height:42px;padding:9px 16px;font-size:13px;border-radius:11px}
.btn-small{min-height:38px}
/* Correct V4 container regression: previous .dd-slide-content{width:100%} erased centering/margins. */
.dd-slide .dd-slide-content{width:min(1160px,calc(100% - 48px));margin-inline:auto;box-sizing:border-box;padding-bottom:12px}
.dd-hero-slider{height:clamp(360px,29vw,445px)}
.dd-slide{background-color:#edf7ff;background-image:linear-gradient(90deg,rgba(248,252,255,.99) 0%,rgba(248,252,255,.98) 29%,rgba(248,252,255,.90) 45%,rgba(248,252,255,.28) 67%,rgba(248,252,255,.03) 90%),var(--slide-img);background-size:100% 100%,auto 100%;background-position:center,right center;}
.dd-slide-content h1,.dd-slide-content h2{font-size:clamp(33px,3.35vw,46px);max-width:615px;line-height:1.23;letter-spacing:-.8px;margin:12px 0 12px;overflow-wrap:anywhere;white-space:normal}
.dd-slide-content p{font-size:clamp(13px,1.15vw,15px);line-height:1.72;max-width:485px;margin:0 0 18px}
.dd-slide-kicker{font-size:11px;padding:7px 12px}
.dd-slide-actions{gap:10px}
.dd-slider-controls{bottom:14px;gap:16px}
.dd-slider-controls>button{width:30px;height:30px;font-size:20px}
/* More useful information in the first two folds. */
.section{padding-block:62px}
.section-heading{margin-bottom:27px}
.section-heading h2,.split-copy h2{font-size:clamp(26px,2.55vw,34px);line-height:1.34;letter-spacing:-.4px}
.section-heading p,.split-copy>p{font-size:14px;line-height:1.77;margin-top:10px}
.eyebrow{font-size:12px;margin-bottom:8px;letter-spacing:.7px}
.four-grid,.three-grid,.agent-grid,.product-grid,.industry-grid,.steps-grid{gap:15px}
.feature-card{padding:21px;min-height:0}
.feature-card h3{font-size:17px}
.feature-card p,.agent-card p,.industry-card p{font-size:13px;line-height:1.7}
.agent-card{padding:20px;min-height:0}
.industry-card{min-height:0}
.dd-industry-art{height:110px}
/* Product and other page headers: text and image appear within the same short fold. */
.page-hero{padding:32px 0 42px}
.dd-page-hero>.container{min-height:242px}
.dd-page-hero .page-hero-wrap{max-width:64%;min-width:0}
.page-hero .breadcrumb{margin-bottom:17px}
.page-hero h1{font-size:clamp(27px,2.95vw,41px);line-height:1.30;letter-spacing:-.7px;margin-bottom:12px;overflow-wrap:anywhere}
.page-hero p{font-size:14px;line-height:1.75;max-width:585px;margin-bottom:19px}
.page-hero .hero-actions{margin-top:15px;gap:10px}
.dd-page-art{width:49%;right:-4%}
/* Make longer labels wrap instead of projecting out of their cards. */
h1,h2,h3,.btn,.section-heading,.split-copy,.feature-card,.agent-card,.problem-choice,.contact-form-card{overflow-wrap:anywhere}
.problem-choice{min-height:0;padding:19px}
/* Navigation always drops down from the TOP header without pushing the page downward. */
@media(max-width:940px){
 :root{--dd-header-height:64px}
 .nav-inner{min-height:var(--dd-header-height)}
 .brand,.brand img{width:150px}
 .menu-toggle{display:grid;place-items:center;width:41px;height:41px;padding:9px;margin-left:auto}
 .mobile-menu{top:calc(100% - 1px);left:0;right:0;z-index:90;max-height:min(67dvh,450px);overflow-y:auto;overscroll-behavior:contain;padding:10px max(15px,calc((100% - 1200px)/2)) 14px;background:#fff;box-shadow:0 15px 24px rgba(19,45,84,.16)}
 .mobile-menu.open{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
 .mobile-menu a{min-width:0;min-height:41px;padding:9px 10px;display:flex;align-items:center;justify-content:space-between;gap:4px;font-size:13px;line-height:1.35;font-weight:650;border:1px solid #e8eef7;border-radius:9px;background:#f9fbff}
 .mobile-menu a .ic{width:14px;height:14px}
 .mobile-menu a:last-child{grid-column:1/-1;border-color:#3b82f6;background:#3b82f6;color:#fff;justify-content:center}
 body.dd-menu-open .mobile-sticky-actions,body.dd-menu-open .dd-sales-fab{display:none!important}
}
@media(max-width:680px){
 :root{--dd-header-height:59px}
 body{font-size:14px;line-height:1.62}
 .container{width:calc(100% - 30px);max-width:100%}
 .nav-inner{min-height:var(--dd-header-height)}
 .brand,.brand img{width:140px}
 .menu-toggle{width:39px;height:39px}
 .mobile-menu{padding:9px 13px 12px;max-height:min(58dvh,340px)}
 .mobile-menu a{font-size:12.5px;min-height:39px;padding:8px 9px}
 .dd-hero-slider{height:clamp(350px,102vw,445px)}
 .dd-slide{align-items:center;background-image:linear-gradient(180deg,rgba(247,252,255,.98) 0%,rgba(248,252,255,.97) 34%,rgba(246,251,255,.86) 58%,rgba(241,249,255,.27) 100%),var(--slide-img);background-size:100% 100%,auto 58%;background-position:center,right bottom}
 .dd-slide .dd-slide-content{width:calc(100% - 32px);max-width:100%;margin-inline:auto;padding-bottom:38px}
 .dd-slide-content h1,.dd-slide-content h2{font-size:clamp(24px,7vw,30px);line-height:1.29;letter-spacing:-.45px;max-width:100%;margin:11px 0 12px}
 .dd-slide-content p{font-size:13px;line-height:1.64;max-width:100%;margin:0 0 14px}
 .dd-slide-kicker{font-size:10px;padding:5px 10px}
 .dd-slide-actions{gap:8px}
 .dd-slide-actions .btn{min-height:39px;font-size:11.5px;white-space:normal;padding:8px 11px;line-height:1.2;max-width:calc(50% - 4px)}
 .dd-slider-controls{bottom:10px;gap:14px}
 .dd-slider-controls>button{width:29px;height:29px}
 .section{padding-block:39px}
 .section-heading{margin-bottom:21px}
 .section-heading h2,.split-copy h2{font-size:clamp(23px,6vw,28px);line-height:1.32}
 .section-heading p,.split-copy>p{font-size:13px;line-height:1.7}
 .feature-card{padding:17px;min-height:0}
 .feature-card h3{font-size:16px}
 .agent-card{min-height:0;padding:16px}
 .agent-card h3{font-size:17px}
 .dd-industry-art{height:105px}
 .page-hero{padding:20px 0 30px}
 .dd-page-hero>.container{min-height:215px}
 .dd-page-hero .page-hero-wrap{width:100%;max-width:100%}
 .page-hero .breadcrumb{font-size:10px;margin-bottom:16px;gap:6px}
 .page-hero h1{font-size:clamp(23px,6.7vw,29px);line-height:1.31;letter-spacing:-.4px;margin-bottom:11px}
 .page-hero p{font-size:12.7px;line-height:1.7;margin:0 0 17px;max-width:100%}
 .page-hero .hero-actions{gap:8px}
 .page-hero .hero-actions .btn{min-height:39px;padding:8px 11px;font-size:11px;white-space:normal;line-height:1.3}
 .dd-page-art{opacity:.14;width:88%;right:-4%;mask-image:linear-gradient(to right,transparent,#000 35%)}
 .mobile-sticky-actions{padding:7px 12px max(7px,env(safe-area-inset-bottom));gap:8px;z-index:49}
 .mobile-sticky-actions a{min-height:39px;font-size:12px;padding:7px 9px}
 .dd-sales-fab{bottom:calc(61px + env(safe-area-inset-bottom));right:11px;width:46px;height:46px;min-height:46px;padding:0;justify-content:center;border-radius:50%;gap:0;box-shadow:0 7px 18px rgba(30,84,180,.26)}
 .dd-sales-fab>span:last-child{font-size:0;width:0;overflow:hidden}
 .dd-sales-fab-icon{font-size:18px;line-height:1;white-space:nowrap}
 main{padding-bottom:68px}
}
@media(max-width:380px){
 .dd-slide-content h1,.dd-slide-content h2{font-size:24px}
 .dd-slide-content p{font-size:12px}
 .dd-slide .dd-slide-content{width:calc(100% - 28px)}
 .dd-slide-actions .btn{font-size:10.5px;padding:7px 9px}
 .page-hero h1{font-size:23px}
 .mobile-menu a{font-size:12px}
}
@media(prefers-reduced-motion:reduce){.dd-slide{transition:none}}

/* 点点AI V4.2 — verified visual layout, no inline styles required by CSP. */
:root{--dd-ink:#122442;--dd-sub:#60738d;--dd-blue:#3b82f6;--dd-cyan:#20bfe0;--dd-line:#e2eaf5;--dd-bg:#f7faff}
html{scroll-padding-top:75px}
body{background:#fff;color:var(--dd-ink)}
.container{width:min(1210px,calc(100% - 54px))}
.site-header{background:rgba(255,255,255,.98);border-bottom:1px solid #e9eef7;box-shadow:0 4px 22px rgba(31,64,106,.025)}
.nav-inner{min-height:70px;gap:20px}
.brand,.brand img{width:169px}
.desktop-nav{gap:clamp(10px,1vw,18px)}
.desktop-nav a{font-size:13px;font-weight:700;padding:8px 0;position:relative}
.desktop-nav a.is-current{color:#276eeb}
.desktop-nav a.is-current::after{content:"";position:absolute;height:3px;left:0;right:0;bottom:-14px;background:#3b82f6;border-radius:8px}
.nav-cta .btn{font-size:12px;min-height:40px;box-shadow:none}
/* Image must be a real <img>; content security policy blocks inline --slide-img styles. */
.dd-hero-slider{position:relative;height:460px;background:linear-gradient(116deg,#f6faff 6%,#eaf4ff 55%,#ddecff 100%);border-bottom:1px solid #e3edf8;isolation:isolate}
.dd-hero-slider::before{content:"";position:absolute;width:540px;height:540px;border-radius:50%;background:radial-gradient(circle,rgba(112,174,253,.20),transparent 67%);right:-90px;top:-160px;pointer-events:none}
.dd-slide{position:absolute;inset:0;display:flex;align-items:center;opacity:0;visibility:hidden;transform:none;transition:opacity .3s ease,visibility .3s ease;background:none!important;overflow:hidden}
.dd-slide.is-active{opacity:1;visibility:visible;transform:none;z-index:2}
.dd-slide-photo{position:absolute;z-index:0;right:max(3%,calc((100vw - 1330px)/2));top:10%;width:min(50%,650px);height:76%;border-radius:26px;object-fit:cover;object-position:91% center;box-shadow:0 25px 60px rgba(25,76,140,.13);background:#dbeafe;filter:saturate(1.05)}
.dd-slide::after{content:"";position:absolute;z-index:1;right:44%;top:0;bottom:0;width:16%;background:linear-gradient(90deg,#f2f9ff 0%,rgba(241,249,255,0));pointer-events:none}
.dd-slide .dd-slide-content{position:relative;z-index:3;width:min(1210px,calc(100% - 54px));margin-inline:auto;padding:0 0 24px;box-sizing:border-box}
.dd-slide-kicker{background:#fff;border:1px solid #d4e6fc;color:#2774db;box-shadow:0 3px 12px rgba(39,118,219,.05);font-size:11px;padding:7px 12px}
.dd-slide-content h1,.dd-slide-content h2{font-size:clamp(34px,3.4vw,46px);max-width:540px;line-height:1.24;letter-spacing:-1.15px;margin:16px 0 16px;font-weight:850;color:#142a4e}
.dd-slide-content h1 span,.dd-slide-content h2 span{color:#3b82f6}
.dd-slide-content p{color:#58708b;font-size:15px;line-height:1.8;max-width:465px;margin-bottom:22px}
.dd-slider-controls{bottom:17px;gap:14px}
.dd-slider-controls>button{width:31px;height:31px;box-shadow:0 2px 8px rgba(49,102,190,.08)}
.dd-slide-dots button:focus-visible,.dd-slider-controls>button:focus-visible{outline:2px solid #255bd6}
/* Trust strip below the hero: more interesting than a full blank transition. */
.dd-proof-strip{background:#fff;border-bottom:1px solid #edf1f7;padding:17px 0}
.dd-proof-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.dd-proof-grid>a{display:flex;align-items:center;gap:12px;border-right:1px solid #e8edf6;padding:4px 18px}
.dd-proof-grid>a:last-child{border:0}
.dd-proof-icon{width:40px;height:40px;background:linear-gradient(138deg,#e4f1ff,#e6fcfa);color:#347fe9;display:grid;place-items:center;border-radius:13px;font-size:23px;flex-shrink:0}
.dd-proof-grid strong,.dd-proof-grid small{display:block;line-height:1.45}
.dd-proof-grid strong{font-size:13px;color:#223e65}
.dd-proof-grid small{font-size:11px;color:#7890ab;margin-top:3px}
/* Balanced content surfaces and meaningful page hierarchy */
.section{padding-block:59px}
.section-heading{margin-bottom:24px}
.section-heading h2{font-size:clamp(26px,2.5vw,34px);letter-spacing:-.6px}
.section-heading p{max-width:720px;margin-inline:auto}
.section-tint,.decision-section{background:#f7faff}
.feature-card,.agent-card,.industry-card,.problem-choice,.step-card,.price-card{transition:box-shadow .2s,border-color .2s,transform .2s;border-color:#e4ebf6}
.feature-card:hover,.agent-card:hover,.industry-card:hover,.problem-choice:hover{box-shadow:0 18px 46px rgba(47,98,162,.10);border-color:#cbdffc;transform:translateY(-3px)}
.feature-card{padding:21px}
.problem-grid{gap:14px}
.problem-choice{padding:20px;min-height:0}
.problem-choice strong{font-size:16px;line-height:1.45}
.industry-card{padding:16px}
.dd-industry-art{width:100%;height:140px;object-fit:cover;border-radius:13px;margin-bottom:14px}
.agent-card{padding:21px}
/* Inner-page banners must not reuse generic full-width backgrounds or oversized whitespace. */
.page-hero.dd-page-hero{padding:33px 0 37px;background:linear-gradient(120deg,#f8fbff,#eef6ff 57%,#eaf4ff)}
.dd-page-hero>.container{min-height:255px}
.dd-page-hero .page-hero-wrap{max-width:57%}
.page-hero h1{font-size:clamp(29px,2.9vw,41px);max-width:100%;letter-spacing:-.9px;line-height:1.3}
.page-hero p{font-size:14px;max-width:550px;line-height:1.78}
.dd-page-art{right:0;top:7px;bottom:7px;width:41%;height:calc(100% - 14px);opacity:1;border-radius:20px;mask-image:none;overflow:hidden;box-shadow:0 14px 30px rgba(34,74,126,.09);border:1px solid rgba(203,224,248,.7)}
.dd-page-art::before{content:"";position:absolute;inset:0 70% 0 0;background:linear-gradient(90deg,rgba(238,246,255,.6),transparent);z-index:1;pointer-events:none}
.dd-page-art img{object-position:80% center}
/* Make gallery, step cards, pricing more compact and legible. */
.pricing-grid{gap:16px}
.price-card{padding:25px}
.price-num{font-size:26px}
.four-grid,.three-grid,.agent-grid,.product-grid,.industry-grid,.steps-grid{gap:15px}
/* Avoid wide blank panels and oversized floating customer-service control */
.dd-sales-fab{box-shadow:0 9px 25px rgba(36,105,204,.2)}
@media(max-width:1050px){
 .desktop-nav{gap:9px}.desktop-nav a{font-size:12px}.brand,.brand img{width:144px}.nav-inner{gap:12px}
 .dd-slide-photo{right:3%;width:49%}.dd-slide-content h1,.dd-slide-content h2{max-width:51%;font-size:34px}.dd-slide-content p{max-width:48%;font-size:14px}
}
@media(max-width:940px){
 .brand,.brand img{width:151px}.desktop-nav a.is-current::after{display:none}
 .mobile-menu a.is-current{color:#1f6ce8;background:#eaf3ff;border-color:#b7d5ff}
 .mobile-menu a.dd-mobile-cta{background:#3b82f6;color:white}
 .dd-slide .dd-slide-content{width:calc(100% - 40px)}
 .dd-proof-grid>a{padding-inline:5px}
 .dd-page-hero .page-hero-wrap{max-width:59%}
 .dd-page-art{width:40%}
}
@media(max-width:680px){
 html{scroll-padding-top:64px}
 .container{width:calc(100% - 32px)}
 .nav-inner{min-height:61px}.brand,.brand img{width:151px}
 .mobile-menu{top:100%;padding:10px 14px 12px;max-height:min(68dvh,490px)}
 .mobile-menu.open{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
 .mobile-menu a{font-size:12.5px;padding:9px 11px;min-height:42px}
 .dd-hero-slider{height:490px;background:linear-gradient(165deg,#f5faff 0%,#eaf5ff 100%)}
 .dd-hero-slider::before{width:280px;height:300px;right:-110px;top:160px}
 .dd-slide{display:block}
 .dd-slide .dd-slide-content{width:calc(100% - 36px);padding:26px 0 0}
 .dd-slide::after{display:none}
 .dd-slide-photo{width:calc(100% - 36px);height:148px;top:auto;right:18px;bottom:44px;border-radius:17px;object-fit:cover;object-position:88% center;box-shadow:0 8px 25px rgba(27,85,147,.12)}
 .dd-slide-content h1,.dd-slide-content h2{font-size:clamp(25px,6.6vw,31px);max-width:100%;line-height:1.24;letter-spacing:-.55px;margin:12px 0 10px}
 .dd-slide-content p{font-size:12.8px;max-width:100%;line-height:1.56;margin:0 0 13px}
 .dd-slide-actions{gap:8px}.dd-slide-actions .btn{min-height:39px;max-width:none;flex:0 1 auto;font-size:11.5px;padding:8px 12px;line-height:1.25}
 .dd-slider-controls{bottom:8px;gap:14px}.dd-slider-controls>button{height:28px;width:28px}
 .dd-proof-strip{padding:13px 0 3px}.dd-proof-grid{display:flex;flex-wrap:nowrap;overflow:auto;scroll-snap-type:x mandatory;gap:0;scrollbar-width:none}
 .dd-proof-grid::-webkit-scrollbar{display:none}
 .dd-proof-grid>a{scroll-snap-align:center;flex:0 0 80%;padding:9px 12px;border-right:1px solid #ecf2fa}
 .dd-proof-grid strong{font-size:12px}.dd-proof-grid small{font-size:10px}
 .section{padding-block:39px}.section-heading{margin-bottom:17px}.section-heading h2{font-size:clamp(23px,6vw,28px)}
 .problem-grid{gap:10px}.problem-choice{padding:16px}.problem-choice strong{font-size:15px}
 .dd-industry-art{height:165px}
 .page-hero.dd-page-hero{padding:20px 0 22px}
 .dd-page-hero>.container{min-height:0;display:flex;flex-direction:column;align-items:stretch}
 .dd-page-hero .page-hero-wrap{max-width:100%;width:100%;padding:0}
 .page-hero .breadcrumb{margin-bottom:14px}.page-hero h1{font-size:clamp(25px,6.5vw,32px);margin:8px 0 10px}.page-hero p{font-size:13px;line-height:1.65;margin-bottom:13px}
 .dd-page-art{position:relative;top:auto;bottom:auto;right:auto;width:100%;height:135px;margin-top:14px;border-radius:14px;opacity:1;mask-image:none;box-shadow:none}
 .dd-page-art::before{display:none}.dd-page-art img{object-position:75% center}
 .mobile-sticky-actions{z-index:55}
 .dd-sales-fab{bottom:calc(62px + env(safe-area-inset-bottom));right:13px}
}
@media(max-width:380px){
 .dd-hero-slider{height:520px}
 .dd-slide .dd-slide-content{padding-top:20px}
 .dd-slide-content h1,.dd-slide-content h2{font-size:24px}
 .dd-slide-content p{font-size:12px;line-height:1.54}
 .dd-slide-photo{height:135px;bottom:43px}
 .mobile-menu a{font-size:12px;padding:8px}
 .section-heading h2{font-size:23px}
}
@media(prefers-reduced-motion:reduce){.dd-slide{transition:none}.feature-card,.agent-card,.industry-card,.problem-choice{transition:none}}

/* 点点AI V4.3: compact typography, top-visible mobile navigation, improved first-screen density. */
:root{--dd-v43-header:62px}
body{font-size:14px;line-height:1.58}
.nav-inner{min-height:62px}
.brand,.brand img{width:151px}
.desktop-nav a{font-size:12px}
.nav-cta .btn{font-size:12px}
.dd-mobile-topnav{display:none}
.dd-hero-slider{height:410px}
.dd-slide-photo{top:9%;height:77%;width:min(47%,610px)}
.dd-slide-content h1,.dd-slide-content h2{font-size:clamp(30px,3.1vw,40px);line-height:1.23;max-width:495px;margin:11px 0 12px}
.dd-slide-content p{font-size:13.5px;line-height:1.62;margin-bottom:16px;max-width:435px}
.dd-proof-strip{padding:10px 0}
.dd-proof-grid>a{padding:3px 14px}
.dd-proof-icon{height:35px;width:35px}
.section{padding-block:44px}
.section-heading{margin-bottom:19px}
.section-heading h2{font-size:clamp(23px,2.2vw,31px)}
.section-heading p{font-size:13px}
.feature-card,.agent-card{padding:18px}
.feature-card h3,.agent-card h3{font-size:16px}
.feature-card p,.agent-card p,.industry-card p{font-size:12.5px}
.page-hero.dd-page-hero{padding:23px 0 25px}
.dd-page-hero>.container{min-height:205px}
.page-hero h1{font-size:clamp(25px,2.55vw,35px);line-height:1.25;letter-spacing:-.6px}
.page-hero p{font-size:13px;line-height:1.62}
.dd-page-art{top:3px;bottom:3px;height:calc(100% - 6px)}
.dd-footer-links{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.dd-icp-link{color:#b9cbed!important;text-decoration:underline;text-underline-offset:3px}
.dd-icp-link:hover{color:#fff!important}
@media(max-width:940px){
 .site-header{position:sticky;top:0;z-index:80}
 .nav-inner{min-height:55px}
 .desktop-nav,.nav-cta,.menu-toggle,#mobile-menu{display:none!important}
 .brand,.brand img{width:138px}
 .dd-mobile-topnav{display:block;max-width:100%;background:#fff;border-top:1px solid #f0f4fa;border-bottom:1px solid #e7eef8;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none;-webkit-overflow-scrolling:touch;touch-action:pan-x}
 .dd-mobile-topnav::-webkit-scrollbar{display:none}
 .dd-mobile-nav-track{display:flex;align-items:center;gap:4px;min-width:max-content;width:max-content;padding:0 max(12px,calc((100vw - 920px)/2));height:39px}
 .dd-mobile-nav-track>a{white-space:nowrap;flex:0 0 auto;text-decoration:none;font-size:12px;font-weight:650;color:#475b79;padding:8px 10px;border-radius:7px;line-height:1.2;position:relative}
 .dd-mobile-nav-track>a.is-current,.dd-mobile-nav-track>a[aria-current=page]{color:#216ce8;background:#eaf3ff}
 .dd-mobile-nav-track>a.dd-nav-contact{background:#3b82f6;color:#fff;margin-left:4px}
}
@media(max-width:680px){
 html{scroll-padding-top:102px}
 .nav-inner{min-height:54px}
 .brand,.brand img{width:133px}
 .dd-sales-fab{display:none!important} /* Mobile consultation remains accessible via top navigation and fixed appointment bar. */
 .dd-mobile-nav-track{height:39px}
 .dd-mobile-nav-track>a{font-size:11.8px;padding:7px 9px}
 .container{width:calc(100% - 28px)}
 .dd-hero-slider{height:400px}
 .dd-slide{display:flex;flex-direction:column;align-items:stretch}
 .dd-slide .dd-slide-content{order:1;width:calc(100% - 28px);padding:17px 0 0;flex:0 0 auto}
 .dd-slide-photo{order:2;position:relative;left:auto;top:auto;right:auto;bottom:auto;width:calc(100% - 28px);max-width:none;margin:12px auto 0;height:120px;border-radius:13px;object-fit:cover;object-position:85% center;box-shadow:0 5px 13px rgba(30,83,148,.10)}
 .dd-slide-content h1,.dd-slide-content h2{font-size:clamp(22px,5.9vw,26px);line-height:1.22;letter-spacing:-.4px;margin:9px 0 8px;max-width:100%}
 .dd-slide-content p{font-size:12px;line-height:1.47;margin:0 0 10px;max-width:100%}
 .dd-slide-kicker{font-size:10px;padding:5px 9px}
 .dd-slide-actions{gap:7px}
 .dd-slide-actions .btn{min-height:34px;font-size:11px;padding:7px 10px;line-height:1.2}
 .dd-slider-controls{bottom:6px}
 .dd-slide::after{display:none}
 .dd-proof-strip{padding:9px 0}
 .dd-proof-grid>a{flex:0 0 82%;padding:4px 10px}
 .section{padding-block:33px}
 .section-heading{margin-bottom:17px}
 .section-heading h2,.split-copy h2{font-size:clamp(21px,5.7vw,26px)}
 .section-heading p{font-size:12px}
 .page-hero.dd-page-hero{padding:16px 0 18px}
 .dd-page-hero>.container{min-height:0}
 .page-hero .breadcrumb{margin-bottom:11px}
 .page-hero h1{font-size:clamp(22px,5.9vw,27px);line-height:1.24;margin:7px 0 9px}
 .page-hero p{font-size:12.2px;line-height:1.53;margin-bottom:10px}
 .page-hero .hero-actions{margin-top:8px}
 .dd-page-art{margin-top:10px;height:120px}
 .page-hero .hero-actions .btn{font-size:11px;min-height:36px}
 .dd-proof-grid strong{font-size:12px}
 .site-footer{padding-top:37px}
 .dd-footer-links{gap:9px}
 .dd-icp-link{font-size:11px}
}
@media(max-width:360px){
 .dd-hero-slider{height:415px}
 .dd-slide .dd-slide-content{padding-top:13px}
 .dd-slide-content h1,.dd-slide-content h2{font-size:22px}
 .dd-slide-photo{height:108px;margin-top:10px}
}

/* 点点AI 学堂: page-scoped responsive design, no inline CSS */
.aca-tag,.aca-chip{display:inline-flex;border:1px solid #bed9ff;color:#1766dd;border-radius:100px;background:#f2f8ff;padding:7px 12px;font-size:13px;font-weight:700}
.aca-home-hero,.aca-detail-hero{background:linear-gradient(116deg,#eff7ff 0%,#f7fbff 60%,#dbeeff 100%)}
.aca-home-split,.aca-detail-split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:32px;align-items:center;min-height:410px;padding-top:46px;padding-bottom:48px}
.aca-home-split h1,.aca-detail-split h1,.aca-enroll-top h1{font-size:clamp(32px,3.35vw,52px);line-height:1.19;letter-spacing:-1px;margin:16px 0;color:#112b52}
.aca-home-split h1 em{font-style:normal;color:#2876ef}.aca-home-split p,.aca-detail-split p,.aca-enroll-top p{color:#526884;max-width:610px;line-height:1.8;font-size:16px}
.aca-home-split img,.aca-detail-split img{width:100%;height:auto;max-height:390px;object-fit:contain}
.aca-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:25px 0 13px}.aca-quick-facts{display:flex;flex-wrap:wrap;gap:9px;color:#5a6c83;font-size:13px}.aca-quick-facts span{padding:5px 12px;background:#fff;border:1px solid #e2eafa;border-radius:10px}
.aca-courses-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.aca-course-card{min-width:0;overflow:hidden;background:white;border:1px solid #e2eaf6;border-radius:18px;box-shadow:0 7px 20px #0824510a;transition:transform .2s ease}.aca-course-card:hover{transform:translateY(-3px)}.aca-cover{display:block;background:#edf5ff}.aca-cover img{display:block;width:100%;aspect-ratio:12/7;object-fit:cover}.aca-card-pad{padding:19px}.aca-audience{font-size:12px;color:#2374e5}.aca-card-pad h3{font-size:20px;line-height:1.4;margin:8px 0}.aca-card-pad h3 a{text-decoration:none;color:#163058}.aca-card-pad p{font-size:14px;line-height:1.65;color:#637691;min-height:46px}.aca-card-end{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid #e8edf6;padding-top:14px;font-size:13px}.aca-card-end strong{color:#1764d7}.aca-card-end a,.aca-enroll-side a{color:#1764d7;text-decoration:none;font-weight:700}
.aca-spotlight{background:#eff6ff}.aca-spotlight-inner{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:center;background:linear-gradient(140deg,#e6f2ff,#fff);border-radius:22px;padding:30px 36px;border:1px solid #deebfd}.aca-spotlight-inner h2{font-size:clamp(26px,2.65vw,40px);line-height:1.25;margin:13px 0}.aca-spotlight-inner p{font-size:15px;line-height:1.7;color:#526884}.aca-spotlight-inner img{width:100%;height:auto}.aca-inclusive{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px;font-size:13px;color:#35537e}.aca-inclusive strong{font-size:27px;color:#1766dd}.aca-pending{font-size:13px!important;color:#8a6937!important}
.aca-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}.aca-step{background:#f2f7ff;border:1px solid #dceafa;border-radius:16px;padding:21px;display:flex;flex-direction:column;gap:7px}.aca-step b{font-size:23px;color:#2876ef}.aca-step strong{font-size:18px}.aca-step span{font-size:13px;color:#6c7d92}
.aca-breadcrumb{color:#8191a7;font-size:13px;margin-bottom:25px}.aca-breadcrumb a{color:#647c9c;text-decoration:none}.aca-detail-hero .container{position:relative}.aca-enroll-top .container{padding-top:34px;padding-bottom:36px}.aca-enroll-top h1{font-size:clamp(29px,3vw,42px)}
.aca-module-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.aca-module{border:1px solid #e0e8f3;border-radius:14px;padding:20px;background:#fff}.aca-module span{font-size:23px;color:#2b76e3;font-weight:800}.aca-module h3{font-size:17px;line-height:1.45;margin:12px 0 8px}.aca-module p{font-size:13px;line-height:1.75;color:#687a93;margin:0}.aca-course-section{background:#fbfdff}
.aca-faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.aca-faq-grid>div{background:#f5f9ff;border-radius:15px;padding:20px;border:1px solid #dce8f6}.aca-faq-grid h3{margin:0 0 8px;font-size:17px}.aca-faq-grid p{margin:0;color:#5c7089;font-size:14px;line-height:1.8}
.aca-offer{display:grid;grid-template-columns:1fr 1.4fr .9fr;gap:22px;align-items:center;background:#fff;box-shadow:0 13px 43px #1054ab12;border-radius:19px;padding:27px;border:1px solid #e2eaf6}.aca-price{display:block;font-size:36px;color:#185ed8;margin:8px 0}.aca-price small{font-size:13px}.aca-offer h3{font-size:18px}.aca-offer p,.aca-small,.aca-disclaimer{color:#74839a;font-size:12px;line-height:1.7}.aca-inclusions{display:flex;flex-wrap:wrap;gap:8px}.aca-inclusions span{background:#eaf7ed;color:#27835e;border-radius:7px;padding:6px 8px;font-size:12px}.aca-table-wrap{overflow-x:auto;border:1px solid #e0e8f3;border-radius:14px}.aca-table-wrap table{width:100%;border-collapse:collapse;min-width:520px}.aca-table-wrap th,.aca-table-wrap td{text-align:left;padding:13px 17px;border-bottom:1px solid #eef3f9;font-size:14px}.aca-table-wrap th{background:#edf5ff}
.aca-enroll-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:22px;align-items:start}.aca-form-card,.aca-enroll-side{padding:26px;background:white;border:1px solid #e0e8f4;border-radius:19px}.aca-form-card h2{font-size:23px;margin:0 0 8px}.aca-form-card>p{color:#697b92;font-size:13px}.aca-form-card label{font-weight:650;display:grid;gap:7px;color:#283b54;font-size:13px;margin:14px 0}.aca-form-card input:not([type=checkbox]),.aca-form-card select,.aca-form-card textarea{border:1px solid #d3dfef;border-radius:9px;width:100%;padding:12px;color:#233b59;font-size:14px;background:#fff;min-width:0}.aca-form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.aca-honeypot{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.aca-form-card .aca-consent{display:flex;flex-direction:row;gap:8px;align-items:flex-start;font-weight:400;line-height:1.6}.aca-consent input{margin-top:4px}.aca-feedback{font-size:13px;color:#2066d6;min-height:20px}.aca-submit:disabled{opacity:.6}.aca-enroll-side img{width:100%;height:auto;border-radius:12px}.aca-enroll-side h3{font-size:19px}.aca-enroll-side strong{font-size:24px;color:#186bdf}
@media (max-width:950px){.aca-courses-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.aca-module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.aca-offer{grid-template-columns:1fr 1fr}.aca-enroll-layout{grid-template-columns:1fr}.aca-home-split,.aca-detail-split{gap:16px}}
@media (max-width:650px){.aca-home-split,.aca-detail-split,.aca-spotlight-inner{grid-template-columns:1fr}.aca-home-split,.aca-detail-split{padding-top:28px;padding-bottom:25px;min-height:0}.aca-home-split img,.aca-detail-split img{max-height:220px}.aca-home-split h1,.aca-detail-split h1{font-size:31px}.aca-home-split p,.aca-detail-split p{font-size:14px}.aca-courses-grid{grid-template-columns:1fr}.aca-module-grid{grid-template-columns:1fr 1fr;gap:9px}.aca-module{padding:14px}.aca-module h3{font-size:15px}.aca-steps{grid-template-columns:1fr 1fr}.aca-spotlight-inner{padding:20px}.aca-faq-grid,.aca-offer,.aca-form-row{grid-template-columns:1fr}.aca-form-card,.aca-enroll-side{padding:18px}.aca-breadcrumb{margin-bottom:15px}.aca-enroll-top h1{font-size:28px}.aca-hero-actions .btn{padding:11px 13px}}
@media (max-width:350px){.aca-module-grid{grid-template-columns:1fr}.aca-hero-actions .btn{width:100%;justify-content:center}}

.aca-home-teaser{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 28px;border-radius:20px;background:linear-gradient(120deg,#eaf4ff,#f8fcff);border:1px solid #dceaff}.aca-home-teaser h2{font-size:clamp(21px,2vw,31px);margin:10px 0;color:#173252}.aca-home-teaser p{color:#59728d;font-size:14px}.aca-home-teaser .btn{flex-shrink:0}@media(max-width:650px){.aca-home-teaser{flex-direction:column;align-items:flex-start;padding:18px}}

.aca-detailed-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.aca-curriculum{border:1px solid #dce8f6;background:#fff;border-radius:16px;padding:16px 19px}.aca-curriculum summary{font-size:17px;font-weight:750;color:#1a3c66;cursor:pointer}.aca-curriculum ol{color:#5a718d;font-size:13px;line-height:1.85;padding-left:22px;margin-bottom:0}.aca-curriculum li{margin:5px 0}@media(max-width:650px){.aca-detailed-grid{grid-template-columns:1fr}}

/* DDA-ACADEMY-V11-COMPACT-PHOTOS */
.aca-home-split,.aca-detail-split{min-height:0;padding-top:26px;padding-bottom:27px;gap:26px}
.aca-home-split h1,.aca-detail-split h1{font-size:clamp(30px,2.75vw,42px);line-height:1.17;letter-spacing:-.025em;margin:12px 0}
.aca-home-split p,.aca-detail-split p{font-size:14px;line-height:1.65;margin:10px 0}
.aca-home-split img,.aca-detail-split img{width:100%;height:245px;max-height:245px;object-fit:cover;border-radius:16px;box-shadow:0 10px 30px #173f7f12}
.aca-home-hero .aca-hero-actions,.aca-detail-hero .aca-hero-actions{margin:16px 0 10px}
.aca-quick-facts{gap:6px}.aca-quick-facts span{font-size:11px;padding:4px 9px}
.aca-tag{font-size:12px;padding:5px 11px}
.aca-breadcrumb{margin-bottom:13px}
.aca-courses-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
.aca-course-card{border-radius:14px;box-shadow:0 6px 16px #0824510b}
.aca-cover img{width:100%;height:auto;aspect-ratio:8/5;object-fit:cover}
.aca-card-pad{padding:12px 12px 13px}
.aca-audience{font-size:10px;line-height:1.4}
.aca-card-pad h3{font-size:15px;line-height:1.35;margin:6px 0}
.aca-card-pad p{font-size:12px;line-height:1.55;margin:6px 0 10px;min-height:55px}
.aca-card-end{gap:6px;padding-top:9px;font-size:11px}
.aca-card-end strong,.aca-card-end a{font-size:11px}
.aca-spotlight-inner{padding:22px 26px;gap:20px}
.aca-spotlight-inner img{max-height:280px;aspect-ratio:8/5;object-fit:cover;border-radius:14px}
.aca-spotlight-inner h2{font-size:clamp(25px,2.2vw,34px)}
.aca-course-section .section-header,.aca-course-section .section-head{margin-bottom:20px}
@media(max-width:1199px){.aca-courses-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:900px){.aca-home-split,.aca-detail-split{gap:16px}.aca-courses-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:650px){
 .aca-home-split,.aca-detail-split{grid-template-columns:1fr;padding-top:21px;padding-bottom:20px;gap:16px}
 .aca-home-split h1,.aca-detail-split h1{font-size:clamp(27px,7.2vw,32px);margin:11px 0}
 .aca-home-split p,.aca-detail-split p{font-size:13px;line-height:1.62}
 .aca-home-split img,.aca-detail-split img{height:170px;max-height:170px;width:100%;object-fit:cover}
 .aca-courses-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
 .aca-card-pad{padding:10px}
 .aca-card-pad h3{font-size:14px}
 .aca-audience{font-size:10px}
 .aca-card-pad p{font-size:11px;line-height:1.5;min-height:48px}
 .aca-card-end{align-items:flex-start;flex-direction:column;gap:4px}
 .aca-card-end strong,.aca-card-end a{font-size:11px}
 .aca-spotlight-inner img{max-height:190px;width:100%}
 .aca-spotlight-inner{padding:17px}
 .aca-quick-facts{gap:5px}
}
@media(max-width:365px){.aca-courses-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.aca-card-pad h3{font-size:13px}.aca-card-pad p{font-size:10.5px}}
@media(prefers-reduced-motion:reduce){.aca-course-card{transition:none}}