@charset "UTF-8";
:root{--ink:#183c31;--dark:#102b26;--lime:#dbf494;--paper:#f8f8f0;--muted:#66776c;--line:#d9dfd1;--radius:24px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px}body{margin:0;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #82ad41;outline-offset:5px}p,h1,h2,h3{margin:0}button{touch-action:manipulation}::selection{background:var(--lime);color:var(--dark)}.wrap{width:min(1120px,calc(100% - 96px));margin-inline:auto}.section-pad{padding-block:112px}.eyebrow{font-size:11px;font-weight:650;letter-spacing:.14em;line-height:1.8;margin-bottom:24px}.green{color:#506b45}.lime{color:var(--lime)}h1{font-size:clamp(48px,6.7vw,82px);font-weight:650;letter-spacing:-.055em;line-height:1.18}h2{font-size:clamp(36px,4.4vw,55px);line-height:1.25;font-weight:620;letter-spacing:-.045em}.section-lead{font-size:18px;line-height:1.9;color:var(--muted);margin-top:24px}.button{min-height:54px;border-radius:100px;display:inline-flex;align-items:center;justify-content:space-between;gap:26px;padding:16px 24px;font-size:14px;font-weight:650;border:1px solid transparent;transition:transform .2s,background .2s}.button:hover{transform:translateY(-2px)}.button-lime{background:var(--lime);color:var(--dark)}.button-dark{background:var(--dark);color:var(--paper)}.button-outline{border-color:#b9c7ae;background:transparent;color:var(--ink)}.skip-link{position:fixed;left:20px;top:-70px;z-index:100;background:var(--lime);padding:12px 20px}.skip-link:focus{top:12px}.site-header{height:76px;padding:0 48px;display:flex;align-items:center;justify-content:space-between;color:#f9fbf0;background:var(--dark);position:sticky;top:0;z-index:20;border-bottom:1px solid #ffffff15}.brand{display:flex;align-items:center;gap:9px;font-size:24px;letter-spacing:-.7px;font-weight:650}.brand img{border-radius:10px}.brand-dot{color:#badd81}nav{display:flex;align-items:center;gap:30px;font-size:12px;font-weight:550}.nav-cta{border:1px solid #ffffff44;padding:10px 17px;border-radius:99px;display:flex;gap:18px;min-height:42px;align-items:center}.nav-tech{padding:12px 0;color:#e1e8dd}.hero{position:relative;min-height:790px;overflow:hidden;background:var(--dark);color:#fff}.hero-picture,.hero-picture img,.hero-shade,.hero-glow{position:absolute;inset:0;width:100%;height:100%}.hero-picture img{object-fit:cover;object-position:60% 55%;animation:hero-drift 28s ease-in-out infinite alternate}.hero-shade{background:linear-gradient(90deg,#0c2525f0 0%,#0c2525a6 35%,#11282610 80%),linear-gradient(0deg,#102b26 0%,#102b2630 25%,#102b2630 70%,#102b265c 100%)}.hero-glow{background:radial-gradient(ellipse at 75% 40%,#ffe6a91c,transparent 48%);animation:glow 6s ease-in-out infinite;pointer-events:none}.hero-content{position:relative;padding-top:80px}.hero .eyebrow{display:flex;align-items:center;gap:9px;color:#dce6cd}.live-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 13px #dbf49480}.hero-copy{font-size:17px;line-height:1.9;color:#e6eadf;margin:25px 0 31px}.hero-dialogue{position:relative;display:flex;flex-direction:column;align-items:flex-end;margin-top:-50px;gap:12px;padding-bottom:62px;pointer-events:none}.example-label{font-size:10px;letter-spacing:.06em;color:#e3ebdf;text-shadow:0 1px 5px #102b26}.hero-bubble{padding:18px 24px;border-radius:18px;max-width:430px;box-shadow:0 15px 38px #062e2933;backdrop-filter:blur(15px)}.hero-bubble p{font-size:19px;font-weight:500;line-height:1.5}.bubble-name{font-size:9px;letter-spacing:.1em;display:block;margin-bottom:5px;font-weight:650}.child-bubble{background:#f8faed;color:#223c34;transform:translateX(-34px);border-bottom-right-radius:5px;animation:float-soft 6s ease-in-out infinite}.tallulah-bubble{background:#163e34e8;color:white;border:1px solid #e3f3c640;border-bottom-left-radius:5px;animation:float-soft 6s ease-in-out -2s infinite}.tallulah-bubble 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p{font-size:14px;line-height:1.9;max-width:700px;color:var(--muted)}.need-mark{font-size:22px;color:#758c63}.experience{background:#e9eee0}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:45px}.narrow{max-width:360px;margin-bottom:3px}.experience-layout{display:grid;grid-template-columns:250px 1fr;gap:60px;margin-top:48px;align-items:start}.scenario-tabs{display:grid}.scenario-tabs button{background:none;border:0;border-bottom:1px solid #cbd6c1;padding:21px 4px;display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:17px;color:#60745d;text-align:left;font-weight:550;min-height:68px}.scenario-tabs button>span:first-child{font-size:10px;flex:0 0 22px;font-weight:400}.scenario-tabs button>span:last-child{margin-left:auto}.scenario-tabs button[aria-selected=true]{color:var(--dark);border-color:var(--ink)}.scenario-tabs 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#c6e49d12;border-radius:50%}.harness-orbit:after{content:"";position:absolute;width:7px;height:7px;border-radius:50%;background:var(--lime);top:33px;left:67px;box-shadow:0 0 22px #dbf494;animation:glow 3s infinite}.harness-core{height:184px;width:184px;border:1px solid #bddd8f75;border-radius:50%;background:radial-gradient(ellipse at 30% 0%,#4f714b,#173a2e 73%);display:flex;flex-direction:column;align-items:center;justify-content:center;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 0 80px #a4cc521a;z-index:1}.core-spark{font-size:30px;color:var(--lime);margin-bottom:6px}.harness-core>span:nth-child(2){font-size:9px;letter-spacing:.15em}.harness-core strong{font-size:27px;letter-spacing:-.04em;font-weight:550;margin-top:3px}.harness-core small{font-size:8px;color:#a0b697;margin-top:10px}.harness-node{position:absolute;display:flex;flex-direction:column;gap:7px;background:#102b26;padding:13px 18px}.harness-node>span{font-size:8px;letter-spacing:.13em;color:#a6c283}.harness-node>strong{font-size:18px;font-weight:500}.harness-node>small{font-size:10px;color:#a3b8a6;line-height:1.6}.node-perceive{left:0;top:62px}.node-understand{right:0;top:0}.node-act{right:0;bottom:66px}.node-verify{left:22px;bottom:0}.tech-details{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}.tech-details article{border-top:1px solid #8fab7e50;padding-top:25px}.tech-index{font-size:10px;color:#a6c283;display:block;margin-bottom:15px}.tech-details h3{font-size:19px;font-weight:550;margin-bottom:13px}.tech-details p{font-size:13px;line-height:1.95;color:#b1c2b4}.tech-tag{font-size:9px;color:#92b57a;display:block;margin-top:22px}.tech-bottom{border-top:1px solid #8fab7e30;margin-top:45px;padding-top:24px;display:flex;gap:10px;align-items:center;font-size:12px;line-height:1.9;color:#cad8c4}.lime-dot{height:5px;width:5px;border-radius:50%;background:var(--lime);flex-shrink:0}.device-lines{margin-top:50px}.device-lines>div{display:flex;gap:25px;border-top:1px solid var(--line);padding:27px 0;align-items:center}.device-lines>div:last-child{border-bottom:1px solid var(--line)}.device-symbol{font-size:46px;line-height:1;width:55px;color:#6e8653;text-align:center}.speaker-symbol{font-size:33px}.device-lines h3{font-size:18px;font-weight:550;margin-bottom:9px}.device-lines p{font-size:13px;line-height:1.85;color:var(--muted)}.device-label{font-size:10px;letter-spacing:.04em;color:#7f8d72;margin-left:auto;text-align:right;flex-shrink:0}.start-cta{display:flex;justify-content:space-between;align-items:center;gap:35px;background:#e4ebd6;border-radius:24px;padding:42px;margin-top:50px}.start-cta p{font-size:28px;line-height:1.5;letter-spacing:-.03em;font-weight:550}.start-cta>div>span{font-size:12px;display:block;color:#69805c;margin-top:14px}.download-actions{display:flex;flex-direction:column;gap:12px;min-width:230px}.faq{padding-bottom:80px}.faq details{border-top:1px solid var(--line)}.faq details:last-child{border-bottom:1px solid var(--line)}summary{cursor:pointer;list-style:none;padding:23px 0;display:flex;align-items:center;justify-content:space-between;gap:25px;font-size:14px;font-weight:550}summary::-webkit-details-marker{display:none}summary>span{font-size:22px;color:#7a9168;font-weight:400;transition:transform .2s}.faq details[open] summary>span{transform:rotate(45deg)}.faq details>p{font-size:13px;line-height:1.95;color:var(--muted);padding:0 28px 26px 0;max-width:800px}.site-footer{border-top:1px solid var(--line);position:relative;padding-block:35px 45px;display:grid;grid-template-columns:1fr 1fr;gap:20px}.site-footer .brand{font-size:22px}.site-footer p{font-size:12px;align-self:center;text-align:right;padding-right:45px}.site-footer small{font-size:10px;line-height:1.9;color:#7f8a75;grid-column:1/-1}.back-top{position:absolute;top:37px;right:0;width:30px;height:30px;display:grid;place-items:center;border:1px solid #c7d2ba;border-radius:50%;font-size:17px}.site-footer .brand-dot{color:#789a4b}dialog{border:1px solid #d6dec9;border-radius:24px;background:var(--paper);color:var(--ink);padding:34px;max-width:min(500px,calc(100% - 32px));width:500px;box-shadow:0 20px 100px #102b2630}dialog::backdrop{background:#071c18a6;backdrop-filter:blur(5px)}dialog .eyebrow{margin-bottom:14px}dialog h2{font-size:30px}dialog>p:not(.eyebrow){font-size:12px;line-height:1.9;color:var(--muted);margin-top:18px}.dialog-close{position:absolute;top:12px;right:12px;height:40px;width:40px;border:0;border-radius:50%;background:transparent;color:#6a7e5e;font-size:28px}.mac-option{display:flex;justify-content:space-between;align-items:center;padding:20px 0;border-bottom:1px solid var(--line);gap:16px;min-height:90px}.mac-option strong{font-size:16px;font-weight:600;display:block}.mac-option small{display:block;font-size:10px;color:var(--muted);margin-top:8px}.mac-option>span:last-child{width:34px;height:34px;flex-shrink:0;display:grid;place-items:center;border-radius:50%;background:#e5ecd7}.dialog-note{font-size:10px!important}.scene-enter{animation:scene-in .6s both}.scene-character{animation:character-bob 2.4s ease-in-out infinite}.scene-character.second{animation-delay:-1s}.river-line{animation:river-flow 3s linear infinite;stroke-dasharray:13 12}.scene-spark{animation:sparkle 2.8s ease-in-out infinite}
@keyframes hero-drift{from{transform:scale(1.01)}to{transform:scale(1.07) translateX(-.5%)}}@keyframes glow{0%,100%{opacity:.55}50%{opacity:1}}@keyframes float-soft{0%,100%{translate:0 0}50%{translate:0 -6px}}@keyframes scene-in{from{opacity:0;translate:0 -8px}to{opacity:1;translate:0 0}}@keyframes character-bob{0%,100%{translate:0 0}50%{translate:0 -2px}}@keyframes river-flow{to{stroke-dashoffset:-50}}@keyframes sparkle{0%,100%{opacity:.3}50%{opacity:1}}
@media(min-width:1100px){.hero-dialogue{margin-top:-50px}.hero-content .button{margin-top:0}.hero{min-height:790px}.hero-footer{margin-top:0}}
@media(max-width:920px){.wrap{width:calc(100% - 64px)}.site-header{padding-inline:32px}.section-pad{padding-block:82px}.hero{min-height:790px}.hero-content{padding-top:65px}.hero-dialogue{margin-top:40px;padding-bottom:35px}.hero-shade{background:linear-gradient(90deg,#0c2525d9,#0c252540),linear-gradient(0deg,#102b26 0%,#102b2630 45%,#102b2670 100%)}.experience-layout{grid-template-columns:180px 1fr;gap:30px}.section-heading{align-items:start}.section-heading .section-lead{font-size:15px}.parent{gap:45px}.parent-preview{padding:26px 17px}.phone-frame{padding:18px 14px 24px}.preview-floating{left:-15px;font-size:9px;padding:13px 17px}.tech-details{gap:24px}.start-cta{padding:30px}.device-label{font-size:9px}.chart-row{gap:6px}}
@media(max-width:600px){html{scroll-padding-top:78px}.wrap{width:calc(100% - 44px)}.site-header{height:66px;padding-inline:21px}.brand{font-size:23px;gap:8px}.brand img{width:29px;height:29px}.nav-tech{display:none}.nav-cta{padding:8px 13px;font-size:11px;min-height:38px;gap:15px}.section-pad{padding-block:68px}.eyebrow{font-size:10px;margin-bottom:19px;letter-spacing:.09em}h1{font-size:clamp(36px,10.8vw,51px);line-height:1.24;letter-spacing:-.06em}h2{font-size:36px;line-height:1.3;letter-spacing:-.055em}.hero{min-height:auto}.hero-content{padding-top:52px}.hero-picture img{object-position:68% 50%;animation-duration:24s}.hero-shade{background:linear-gradient(180deg,#102b26b8 0%,#102b2685 30%,#102b2620 52%,#102b26c7 82%,#102b26 99%),linear-gradient(90deg,#102b2640,#102b2600)}.hero-copy{font-size:14px;line-height:1.95;margin:22px 0 24px;max-width:310px;color:#f0f2e8}.button{min-height:52px;padding:15px 20px;font-size:12px;gap:25px}.hero-dialogue{margin-top:64px;padding-bottom:33px;gap:11px;align-items:flex-end}.example-label{font-size:8px;line-height:1.7;align-self:flex-start;letter-spacing:0;color:#f0f0db}.hero-bubble{padding:14px 16px;max-width:95%;border-radius:14px}.hero-bubble p{font-size:15px;line-height:1.6;letter-spacing:-.02em}.child-bubble{transform:translateX(-18px);align-self:flex-end;border-bottom-right-radius:3px}.tallulah-bubble{border-bottom-left-radius:3px}.bubble-name{font-size:8px;margin-bottom:4px}.bubble-action{font-size:9px;margin-top:10px;padding-top:10px;gap:6px}.hero-footer{padding-block:19px 25px;font-size:9px;gap:10px;justify-content:space-between;letter-spacing:0}.tiny-plus{font-size:12px}.section-lead{font-size:15px;line-height:1.95;margin-top:20px}.desktop-only{display:none}.need-list{margin-top:32px}.need-list article{grid-template-columns:25px 1fr 16px;gap:8px;padding:23px 0}.need-number{font-size:10px;padding-top:6px}.need-list h3{font-size:17px;line-height:1.6;margin-bottom:8px;letter-spacing:-.04em}.need-list p{font-size:12px;line-height:1.95}.need-mark{font-size:17px;padding-top:4px}.section-heading{display:block}.section-heading .section-lead{margin-top:19px;font-size:14px}.experience-layout{display:block;margin-top:26px}.scenario-tabs{display:flex;gap:7px}.scenario-tabs button{border:1px solid #c4d0b9;border-radius:100px;padding:11px 12px;gap:7px;min-height:44px;justify-content:center;flex:1;font-size:11px;white-space:nowrap}.scenario-tabs button>span:first-child{font-size:8px;flex:0 0 auto}.scenario-tabs button>span:last-child{display:none}.scenario-tabs button[aria-selected=true]{background:var(--ink);color:#f1f8da;border-color:var(--ink)}.interaction-note{font-size:9px;margin-top:10px;margin-bottom:18px}.scene-panel{padding:15px;border-radius:18px}.scene-topline{font-size:6px;letter-spacing:.08em;margin-bottom:12px}.scene-dialogue{padding-top:16px}.scene-child{font-size:17px;line-height:1.65;letter-spacing:-.025em}.scene-answer{font-size:12px;line-height:1.9;margin-top:7px}.scene-result{font-size:10px;padding-top:13px;margin-top:15px;line-height:1.85}.voice-footnote{font-size:10px;align-items:start;justify-content:start;margin-top:20px;gap:12px}.wave-icon{flex-shrink:0;margin-top:3px}.parent{display:flex;flex-direction:column;gap:39px;align-items:stretch}.parent .section-lead{line-height:1.9}.parent-description{font-size:13px;line-height:1.95;margin-top:21px}.text-link{font-size:11px;margin-top:24px}.parent-controls{margin-top:30px;padding-top:20px}.parent-controls p{font-size:11px}.parent-preview{margin-inline:12px;padding:28px 16px 46px;border-radius:160px 160px 28px 28px}.phone-frame{max-width:296px;padding:17px 18px 24px;border-width:5px;border-radius:34px}.phone-frame h3{font-size:24px}.preview-floating{left:-12px;bottom:18px;font-size:10px;padding:13px 17px}.technology h2{font-size:42px;line-height:1.25}.technology .eyebrow{font-size:8px;letter-spacing:.1em}.technology .section-lead{font-size:14px}.harness-visual{height:400px;margin:25px -5px 35px}.harness-orbit{width:245px;height:240px;transform:translate(-50%,-50%) rotate(-25deg)}.harness-orbit:before{inset:-14px}.harness-orbit:after{left:12px;top:57px;width:5px;height:5px}.harness-core{width:145px;height:145px}.core-spark{font-size:24px;margin-bottom:4px}.harness-core>span:nth-child(2){font-size:8px}.harness-core strong{font-size:23px}.harness-core small{font-size:7px;margin-top:8px}.harness-node{padding:9px 5px;gap:5px;max-width:146px}.harness-node>span{font-size:7px}.harness-node>strong{font-size:15px}.harness-node>small{font-size:8px;line-height:1.7}.node-perceive{left:0;top:22px}.node-understand{right:0;top:45px;text-align:right}.node-act{right:0;bottom:13px;text-align:right}.node-verify{left:0;bottom:38px}.tech-details{display:block}.tech-details article{display:grid;grid-template-columns:25px 1fr;gap:0 9px;padding-top:22px;margin-top:27px}.tech-index{grid-column:1;grid-row:1/4;font-size:9px;margin-top:5px}.tech-details h3{font-size:18px;grid-column:2;margin-bottom:12px}.tech-details p{font-size:12px;grid-column:2}.tech-tag{font-size:8px;grid-column:2;margin-top:15px}.tech-bottom{font-size:11px;margin-top:31px;padding-top:21px;align-items:start}.lime-dot{margin-top:8px}.start h2{font-size:33px;line-height:1.35}.device-lines{margin-top:31px}.device-lines>div{padding:23px 0;gap:15px;align-items:start;position:relative}.device-symbol{font-size:35px;width:32px;flex-shrink:0;margin-top:6px}.speaker-symbol{font-size:28px}.device-lines h3{font-size:16px;line-height:1.6;margin-bottom:7px}.device-lines p{font-size:12px;line-height:1.9}.device-label{display:none}.start-cta{display:block;padding:26px 23px;border-radius:21px;margin-top:33px}.start-cta p{font-size:27px;line-height:1.5}.start-cta>div>span{font-size:11px;line-height:1.8;margin-top:12px}.download-actions{margin-top:25px;gap:11px}.faq{padding-bottom:53px}.faq summary{font-size:12px;line-height:1.9;padding:20px 0;gap:18px}.faq details>p{font-size:12px;line-height:1.95;padding-bottom:22px}.site-footer{padding-block:28px calc(32px + env(safe-area-inset-bottom));display:block}.site-footer .brand{font-size:23px}.site-footer p{text-align:left;margin-top:18px;font-size:12px}.site-footer small{display:block;font-size:9px;line-height:1.9;margin-top:25px}.back-top{top:29px;width:34px;height:34px}.site-footer .brand img{width:28px;height:28px}dialog{padding:30px 23px;border-radius:20px}dialog h2{font-size:28px}.mac-option strong{font-size:14px}.mac-option small{font-size:9px;line-height:1.8}dialog>p:not(.eyebrow){font-size:11px}}
@media(max-width:350px){.wrap{width:calc(100% - 36px)}h1{font-size:35px}.hero-content{padding-top:40px}.hero-dialogue{margin-top:50px}.hero-bubble{max-width:100%;padding:12px}.hero-bubble p{font-size:13px}.hero-footer{font-size:8px;gap:7px}.scenario-tabs button{padding:10px 7px;font-size:10px}.scenario-tabs button>span:first-child{display:none}.phone-frame{padding-inline:12px}.parent-preview{margin-inline:5px}.preview-floating{font-size:9px}.harness-core{width:130px;height:130px}}
/* 手机上正文优先可读；示意图里的辅助标注保持紧凑。 */
@media(max-width:600px){.nav-cta{min-height:44px}.site-header>.brand{min-height:44px}.text-link{min-height:44px;padding-block:8px}.back-top{width:44px;height:44px}.dialog-close{width:44px;height:44px}.need-list p,.parent-description,.tech-details p,.device-lines p,.faq details>p{font-size:14px}.scene-result,.voice-footnote,.parent-controls p{font-size:12px}.interaction-note{font-size:11px}.scene-answer{font-size:13px}.tech-bottom{font-size:12px}.start-cta>div>span{font-size:12px}.site-footer small{font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.hero-picture img{transform:none}}

.exposure-house{--bar:92%}.usage-house{--bar:58%}.exposure-bridge{--bar:69%}.usage-bridge{--bar:23%}.exposure-explore{--bar:46%}.usage-explore{--bar:15%}.footer-links{grid-column:1/-1;display:flex;gap:24px;font-size:11px;line-height:2}.footer-links a{text-decoration:underline;text-underline-offset:4px}@media(max-width:600px){.footer-links{margin-top:24px;font-size:12px;flex-wrap:wrap;gap:12px 24px}}
