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.9fr;align-items:center;gap:85px}.contact-copy h2{font-size:35px;line-height:1.65}.contact-copy>p:not(.eyebrow){font-size:14px;color:#71849d;line-height:2;margin-top:21px}.contact-card{margin-top:28px;border:1px solid #d9e6f5;background:#fff;border-radius:12px;padding:18px;display:flex;align-items:center;gap:13px;max-width:445px}.wechat-symbol{display:grid;place-items:center;border-radius:12px;width:43px;height:43px;background:#e7f6ed;color:#65a27f;font-size:18px;flex-shrink:0}.contact-card>div>span{display:block;font-size:10px;color:#8799ad}.contact-card strong{display:block;font-size:24px;font-weight:650;line-height:1.5;letter-spacing:.5px}.contact-card>.button{margin-left:auto;white-space:nowrap;padding:8px 12px}.wish-card{background:#fff;border:1px solid #dfe8f4;border-radius:18px;padding:29px;box-shadow:0 14px 32px #3f64910a}.wish-heading{display:block;font-size:12px;color:#91a0b3;margin-bottom:17px}.wish-message{display:flex;justify-content:space-between;gap:14px;width:100%;background:#f3f7fd;border:1px solid #e9eff8;border-radius:10px 10px 10px 2px;text-align:left;font-size:12px;padding:14px 13px;color:#587493;margin-bottom:12px;line-height:1.8}.wish-message:hover{border-color:#b5cdef;background:#edf4ff}.wish-message>span{color:#9cb5d5}.wish-card label{display:block;font-size:11px;color:#9aa7b7;margin:22px 0 8px}.wish-card textarea{width:100%;border:1px solid #dce6f2;border-radius:8px;padding:12px;font-size:12px;color:#45617f;line-height:1.9;min-height:100px;resize:vertical;background:#fcfdff}.wish-card textarea::placeholder{color:#a2afbf}.wish-card>.button{width:100%;margin-top:12px;font-size:12px}.form-note{font-size:9px;color:#a0acbc;text-align:center;margin-top:11px}.faq-section{display:grid;grid-template-columns:.6fr 1.4fr;gap:70px;padding-block:55px 65px}.faq-section h2{font-size:23px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{list-style:none;cursor:pointer;font-size:13px;padding:18px 26px 18px 0;position:relative}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:'+';position:absolute;right:4px;top:15px;color:#8aa2bf;font-size:20px}.faq-list details[open] summary:after{content:'−'}.faq-list details p{font-size:12px;color:#8595a9;padding:0 20px 20px 0;line-height:2}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-block:25px 35px;font-size:11px;color:#92a0b2}.footer-brand{font-size:13px;color:#5d7593}.site-footer>a:last-child{color:#6486af}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);padding:12px 20px;background:#234c79;color:white;font-size:12px;border-radius:9px;z-index:80;max-width:calc(100% - 30px);text-align:center;box-shadow:0 8px 25px #17345720}.copy-fallback{width:100%;min-height:100px;margin-top:16px;font-size:12px;border:1px solid var(--line);padding:10px}.mobile-only{display:none}
@media(min-width:1500px){.hero{padding-block:82px 55px}}
@media(max-width:1100px){h1{font-size:47px}.container{width:calc(100% - 48px)}.hero{gap:18px}.hero-description{font-size:14px}.actions{gap:16px}.actions .button{padding:12px 18px;font-size:12px}.quiet-link{font-size:12px}.experience-shell{grid-template-columns:280px minmax(0,1fr)}.scene-picker{padding-inline:13px}.file-layout{gap:40px}.contact-layout{gap:45px}.visual-copy h3{font-size:20px}.contact-copy h2{font-size:30px}.feature-chips>span{padding:15px 16px;gap:9px}.demo-heading{padding-inline:20px}.chat-stage{padding-inline:20px}}
@media(max-width:850px){h1{font-size:41px}.hero-description{font-size:13px}.hero{grid-template-columns:.9fr 1.1fr;padding-top:47px}.hero .eyebrow{font-size:10px;letter-spacing:0}.hero-note{font-size:9px;gap:8px}.actions{gap:13px}.actions>.quiet-link{font-size:11px}.benefit-row{gap:15px;font-size:11px}.benefit-row>span{gap:8px}.section{padding-block:58px}h2{font-size:30px}.experience-shell{grid-template-columns:235px minmax(0,1fr)}.scene-choice{padding:11px 8px;gap:9px}.scene-choice strong{font-size:12px}.scene-choice small{font-size:9px}.scene-emoji{width:31px;height:31px;font-size:12px}.picker-heading{font-size:10px}.picker-note{font-size:9px}.demo-heading{padding:14px 17px;gap:9px}.demo-heading h3{font-size:14px}.demo-heading p{font-size:9px}.demo-label{font-size:8px;padding:3px 6px}.demo-avatar{width:33px;height:33px;font-size:13px}.chat-stage{padding:18px 15px;height:360px}.bubble{font-size:12px;padding:10px 12px;max-width:84%}.file-message{min-width:220px}.file-message strong{font-size:11px}.file-message small{font-size:9px}.payment-message{min-width:205px}.call-message{min-width:220px}.demo-footer{padding:15px 15px 10px;gap:10px}.result-line{font-size:10px}.demo-context{padding-inline:15px;font-size:9px}.visual-grid{gap:28px 20px}.visual-copy{padding:17px 3px 0}.visual-copy h3{font-size:18px}.visual-copy p{font-size:12px}.art-play{font-size:9px;bottom:12px;right:12px}.file-layout{grid-template-columns:1fr;gap:30px}.file-layout .section-title br{display:none}.file-layout .section-title>p:not(.eyebrow){margin-top:18px}.file-board{max-width:640px;width:100%;margin:auto}.feature-chips{grid-template-columns:repeat(2,minmax(0,1fr));max-width:640px}.feature-detail-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.contact-layout{grid-template-columns:1fr 1fr;gap:30px}.contact-copy h2{font-size:25px}.contact-copy>p:not(.eyebrow){font-size:12px}.contact-card{flex-wrap:wrap;padding:15px}.contact-card>.button{margin-left:0;width:100%}.wish-card{padding:22px}.faq-section{gap:35px}.faq-section h2{font-size:21px}.nav-row{height:72px;gap:18px}.brand{font-size:15px}nav{gap:20px;font-size:12px}}
@media(max-width:650px){html{scroll-padding-top:115px}.container{width:calc(100% - 36px)}.nav-row{height:auto;padding-block:12px;flex-wrap:wrap;gap:10px}.brand{font-size:14px}.brand img{width:31px;height:31px}.brand small{font-size:9px}.nav-row>.button{font-size:11px;padding:7px 12px}nav{order:3;width:100%;border-top:1px solid #eff3f9;padding-top:8px;justify-content:space-between;font-size:11px}.hero{grid-template-columns:1fr;gap:23px;padding-block:32px 25px}.hero h1{font-size:45px;line-height:1.4;letter-spacing:-1.8px;margin-bottom:17px}.hero .eyebrow{font-size:10px;margin-bottom:13px;letter-spacing:.5px}.hero-description{font-size:13px}.actions{gap:15px;margin-top:23px}.actions .button{font-size:12px;padding:12px 16px}.hero-note{font-size:9px;margin-top:15px}.hero-art{max-width:480px;width:100%;margin:auto}.hero-art figcaption{font-size:8px;margin-top:5px}.benefit-row{flex-direction:column;gap:14px;padding-block:21px;font-size:12px}.benefit-row>span{gap:12px}.benefit-row b{height:25px;width:25px;font-size:10px}.section{padding-block:43px;scroll-margin-top:110px}h2{font-size:27px}.section-title{margin-bottom:25px}.section-title .eyebrow{font-size:10px;margin-bottom:10px}.section-title>p:not(.eyebrow){font-size:12px;margin-top:12px}.experience-shell{display:flex;flex-direction:column;border-radius:16px}.scene-picker{padding:17px 12px 12px;border-right:0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.picker-heading{grid-column:1/-1;margin-bottom:5px;font-size:10px;padding-left:4px}.scene-choice{padding:10px 8px;margin:0;gap:7px;border-radius:8px}.scene-emoji{width:26px;height:29px;border-radius:8px;font-size:11px}.scene-choice strong{font-size:11px}.scene-choice small{display:none}.scene-choice>b{font-size:16px}.picker-note{display:none}.demo-heading{height:73px;padding:13px 14px;gap:9px}.demo-heading h3{font-size:13px}.demo-heading p{font-size:8px;max-width:190px}.demo-label{padding:2px 5px;font-size:8px}.demo-avatar{width:29px;height:29px;font-size:12px;border-radius:9px}.chat-stage{height:355px;min-height:355px;padding:15px 12px 20px}.chat-time{font-size:9px;margin-bottom:17px}.avatar{width:27px;height:27px;font-size:9px}.message{gap:8px;margin-bottom:14px}.bubble{font-size:12px;max-width:85%;padding:10px 12px}.file-message{min-width:0;width:245px;gap:9px}.file-icon{width:33px;height:40px;font-size:9px}.file-message strong{font-size:11px}.payment-message{min-width:205px}.call-message{min-width:0;width:240px}.demo-footer{gap:10px;padding:15px 13px 10px;align-items:flex-start}.result-line{font-size:10px;line-height:1.8;max-width:220px}.replay-button{font-size:9px;padding:5px 8px}.demo-context{font-size:9px;padding:0 13px 15px;min-height:45px}.experience-note{font-size:9px;line-height:1.9;margin-top:15px}.visual-grid{grid-template-columns:1fr;gap:27px}.art-link{border-radius:16px}.art-play{font-size:10px;bottom:13px;right:13px}.visual-copy{padding:15px 3px 0}.visual-copy h3{font-size:20px;margin-bottom:7px}.visual-copy p{font-size:12px;line-height:1.9}.custom-note{font-size:9px;padding:2px 6px;margin-bottom:7px}.file-layout .section-title br{display:initial}.file-board{padding:22px 17px;border-radius:14px}.file-board-top{gap:8px}.paper{font-size:9px;gap:9px}.paper b{width:46px;height:60px;font-size:21px}.paper-pdf b{font-size:13px}.file-board-middle{gap:9px;margin-block:25px 20px}.mini-assistant{font-size:14px}.mini-assistant>span{font-size:10px}.finished-files>div{padding:13px}.finished-files strong{font-size:12px}.finished-files small{font-size:9px}.file-footnote{font-size:8px;line-height:1.8;margin-top:15px}.feature-chips{gap:9px;margin-bottom:20px}.feature-chips>span{font-size:10px;padding:12px 10px;gap:8px;border-radius:9px}.feature-chips i{width:25px;height:25px;font-size:10px}.more-features summary{font-size:11px;padding-block:16px}.feature-detail-grid{grid-template-columns:1fr;padding-inline:5px;gap:19px}.feature-detail-grid h3{font-size:13px}.feature-detail-grid p{font-size:11px}.contact-layout{grid-template-columns:1fr;gap:28px}.contact-copy h2{font-size:29px}.contact-copy>p:not(.eyebrow){font-size:13px}.contact-card{flex-wrap:nowrap;gap:10px;padding:15px;max-width:none}.contact-card>.button{margin-left:auto;width:auto;font-size:10px;padding:8px 11px}.contact-card strong{font-size:22px}.contact-card>div>span{font-size:9px}.wechat-symbol{width:34px;height:38px;font-size:15px}.wish-card{padding:22px}.wish-message{font-size:11px}.wish-card textarea{font-size:12px}.faq-section{grid-template-columns:1fr;gap:13px;padding-block:39px}.faq-section h2{font-size:22px}.faq-list summary{font-size:12px;padding-block:17px}.faq-list details p{font-size:11px}.site-footer{flex-wrap:wrap;gap:12px;font-size:10px;padding-block:22px}.site-footer p{order:3;width:100%;font-size:10px}.footer-brand{font-size:12px}.footer-brand img{width:25px;height:25px}.mobile-only{display:initial}}
@media(prefers-reduced-motion:reduce){html,.chat-stage{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
@media print{.site-header,.actions,.scene-picker,.replay-button,.contact-section,.toast,.skip-link{display:none!important}.container{width:100%}.hero{grid-template-columns:1fr 1fr;padding-block:20px}h1{font-size:30px}h2{font-size:24px}.section{padding-block:25px}.experience-shell{display:block}.chat-stage{height:auto;overflow:visible}.visual-grid{grid-template-columns:1fr 1fr}.visual-card{break-inside:avoid}.art-play{display:none}.feature-chips{grid-template-columns:repeat(4,1fr)}*{-webkit-print-color-adjust:exact;print-color-adjust:exact}}

/* Compact first-screen experience, 2026-10-29. */
.hero{grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:36px;padding-block:62px 55px}.hero h1{font-size:46px;letter-spacing:-1.8px;line-height:1.65}.hero h1>span{display:block;white-space:nowrap}.hero .title-offset{padding-left:44px}.hero-description{font-size:14px}.hero .actions{gap:14px}.hero .actions .button{padding:12px 17px;font-size:12px}.hero .quiet-link{font-size:11px}.hero-experience{min-width:0;scroll-margin-top:100px}.compact-demo-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:15px}.compact-demo-title h2{font-size:22px;letter-spacing:0}.compact-demo-title>span{font-size:10px;color:var(--muted)}.hero-experience .experience-shell{grid-template-columns:175px minmax(0,1fr);border-radius:16px}.hero-experience .scene-picker{padding:15px 9px}.hero-experience .picker-heading{font-size:10px;padding-left:5px;margin-bottom:12px}.hero-experience .scene-choice{padding:15px 7px;gap:8px;margin-bottom:5px}.hero-experience .scene-choice strong{font-size:11px}.hero-experience .scene-choice small{display:none}.hero-experience .scene-choice>b{display:none}.hero-experience .scene-emoji{width:27px;height:29px;font-size:11px;border-radius:8px}.hero-experience .picker-note{font-size:9px;margin:17px 5px 0}.hero-experience .demo-heading{height:74px;padding:13px 14px;gap:8px}.hero-experience .demo-heading h3{font-size:13px}.hero-experience .demo-heading p{font-size:9px}.hero-experience .demo-avatar{width:30px;height:32px;font-size:12px}.hero-experience .demo-label{font-size:8px;padding:2px 5px}.hero-experience .chat-stage{height:326px;min-height:326px;padding:15px 12px}.hero-experience .bubble{font-size:11px;padding:10px 12px}.hero-experience .file-message,.hero-experience .payment-message,.hero-experience .call-message{min-width:0;max-width:85%;width:245px}.hero-experience .file-message strong{font-size:10px}.hero-experience .file-message small{font-size:9px}.hero-experience .demo-footer{padding:13px 12px 10px;gap:8px}.hero-experience .result-line{font-size:10px}.hero-experience .demo-context{font-size:9px;padding:0 12px 14px}.compact-contact{border-block:1px solid var(--line);padding-block:27px;display:flex;align-items:center;justify-content:space-between;gap:22px}.compact-contact h2{font-size:20px;letter-spacing:0}.compact-contact p{font-size:12px;color:var(--muted);margin-top:8px}.compact-contact-actions{display:flex;gap:16px;align-items:center}.compact-contact-actions strong{font-size:16px;white-space:nowrap}.faq-section{padding-block:38px}.nav-row{flex-wrap:nowrap}
@media(max-width:1100px){.hero{gap:25px;grid-template-columns:.66fr 1.34fr}.hero h1{font-size:35px}.hero .title-offset{padding-left:26px}.hero-description{font-size:12px}.hero-experience .experience-shell{grid-template-columns:150px minmax(0,1fr)}.hero-experience .scene-choice{gap:6px}.hero-experience .scene-choice strong{font-size:10px}.hero-experience .scene-emoji{width:23px}.hero-experience .demo-label{display:none}}
@media(max-width:850px){.hero{grid-template-columns:1fr;padding-block:35px;gap:30px}.hero-copy{max-width:540px}.hero h1{font-size:43px}.hero .title-offset{padding-left:60px}.hero-description{font-size:14px}.hero-experience .experience-shell{grid-template-columns:190px minmax(0,1fr)}.hero-experience .scene-choice strong{font-size:12px}.hero-experience .scene-choice{padding-block:16px}.hero-experience .chat-stage{height:330px;min-height:330px}.hero-experience .bubble{font-size:12px}.compact-contact{align-items:flex-start}.compact-contact-actions{flex-direction:column;gap:9px}.brand small{letter-spacing:.4px}}
@media(max-width:650px){.nav-row{height:69px;padding-block:10px}.brand{font-size:13px;gap:8px}.brand small{font-size:8px;letter-spacing:0}.hero{padding-block:28px 32px;gap:27px}.hero h1{font-size:36px;line-height:1.65}.hero .title-offset{padding-left:43px}.hero-description{font-size:12px}.hero-experience{scroll-margin-top:82px}.compact-demo-title{gap:8px;margin-bottom:12px}.compact-demo-title h2{font-size:20px}.compact-demo-title>span{font-size:9px}.hero-experience .experience-shell{display:grid;grid-template-columns:108px minmax(0,1fr);border-radius:12px}.hero-experience .scene-picker{display:block;padding:10px 5px;border-bottom:0;border-right:1px solid var(--line)}.hero-experience .picker-heading{font-size:9px;padding:0 4px;line-height:1.8}.hero-experience .scene-choice{display:flex;gap:0;min-height:54px;padding:10px 6px;margin-bottom:6px}.hero-experience .scene-choice strong{font-size:10px;line-height:1.7}.hero-experience .scene-emoji,.hero-experience .picker-note{display:none}.hero-experience .demo-heading{height:68px;padding:10px 9px;gap:6px}.hero-experience .demo-avatar{display:none}.hero-experience .demo-heading h3{font-size:11px}.hero-experience .demo-heading p{font-size:8px;line-height:1.7}.hero-experience .chat-stage{height:334px;min-height:334px;padding:12px 8px}.hero-experience .avatar{display:none}.hero-experience .message{gap:0}.hero-experience .bubble{font-size:11px;max-width:96%;padding:9px 10px}.hero-experience .file-message,.hero-experience .payment-message,.hero-experience .call-message{width:auto;max-width:100%;gap:7px;min-width:0}.hero-experience .file-message>span:last-child{min-width:0}.hero-experience .file-icon{width:25px;height:33px;font-size:8px}.hero-experience .file-message strong{font-size:9px;overflow-wrap:anywhere}.hero-experience .file-message small{font-size:8px}.hero-experience .payment-message strong{font-size:13px}.hero-experience .demo-footer{display:block;padding:11px 9px 8px}.hero-experience .result-line{font-size:9px;gap:5px}.hero-experience .replay-button{margin-top:9px}.hero-experience .demo-context{font-size:8px;padding:0 9px 12px}.compact-contact{display:block;padding-block:22px}.compact-contact h2{font-size:17px}.compact-contact p{font-size:11px}.compact-contact-actions{flex-direction:row;justify-content:space-between;margin-top:18px}.compact-contact-actions strong{font-size:15px}.faq-section{padding-block:30px}}