:root{--bg:#f5f5f7;--white:#fff;--ink:#1d1d1f;--muted:#616168;--blue:#0071e3;--line:#e8e8ed;}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;letter-spacing:.02em;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;letter-spacing:inherit;border:0;cursor:pointer}a,button,summary{touch-action:manipulation;-webkit-tap-highlight-color:transparent}img{display:block;max-width:100%;height:auto}h1,h2,h3,p,figure{margin:0}h1,h2,h3{text-wrap:balance}a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #399aff;outline-offset:5px}.wrap{width:min(1120px,calc(100% - 64px));margin-inline:auto}.skip{position:fixed;top:-80px;left:20px;z-index:10001;background:white;padding:12px}.skip:focus{top:10px}header{position:sticky;top:0;z-index:30;background:#fffffff2;-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid #d6d6dd;box-shadow:0 10px 30px -22px #1d2b4533}.nav{height:80px;display:flex;align-items:center;gap:40px}.brand{display:inline-flex;align-items:center;gap:11px;font-size:25px;font-weight:600;white-space:nowrap}.brand img{border-radius:10px}.nav-links{display:flex;gap:36px;margin-left:auto;font-size:16px}.nav-links a:hover,.text-link:hover{color:var(--blue)}.button{display:inline-flex;align-items:center;justify-content:center;gap:22px;padding:12px 25px;min-height:50px;border-radius:99px;background:var(--blue);color:white;font-weight:500;transition:transform .18s,background .18s}.button:hover{background:#005ebd;transform:translateY(-2px)}.button.small{padding:9px 19px;font-size:14px;min-height:44px}.text-link{color:var(--blue);display:inline-flex;align-items:center;gap:10px;min-height:44px}.hero{display:grid;grid-template-columns:1.15fr 1fr;align-items:center;gap:54px;padding-block:54px 62px}.eyebrow{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.08em}.hero h1{font-size:clamp(44px,5.3vw,72px);line-height:1.2;letter-spacing:.03em;margin:22px 0}.hero h1 span{color:var(--blue)}.lead{font-size:25px;line-height:1.5;font-weight:550;margin-bottom:19px}.hero-desc{font-size:17px;color:var(--muted);line-height:1.9}.hero-actions{display:flex;align-items:center;gap:24px;margin-top:29px}.availability{font-size:12px;color:var(--muted);margin-top:14px}.product{display:flex;flex-direction:column;align-items:center}.phone{position:relative;width:286px;border:7px solid #33363a;border-radius:43px;background:#f5f5f7;overflow:hidden;box-shadow:0 30px 65px -20px #27354240,0 0 0 2px #b6b9bf}.home-screen{width:100%;height:auto;aspect-ratio:721/1568}.preview-header{position:absolute;top:7.1%;left:0;right:0;height:11.3%;background:#f5f5f7;padding:5px 14px;display:flex;align-items:center;justify-content:space-between}.preview-header small{display:block;font-size:9px;color:#75757c}.preview-header b{font-size:24px;display:block;line-height:1.5;margin-top:4px}.preview-header img{width:34px;height:34px;border-radius:50%}.product figcaption{font-size:11px;color:var(--muted);margin-top:22px}.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;padding:32px 0 42px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.benefits span{color:var(--blue);font-size:13px}.benefits h2{font-size:20px;line-height:1.4;margin:13px 0 10px}.benefits p{font-size:14px;color:var(--muted)}.section{padding-block:90px}.section-head{text-align:center}.section h2,.download-section h2{font-size:clamp(34px,3.8vw,50px);line-height:1.25;font-weight:650;margin-top:17px}.section-head>p:last-child{color:var(--muted);margin-top:22px;font-size:17px}.tabs{display:flex;justify-content:center;gap:8px;margin:35px auto 25px}.tabs button{padding:11px 23px;min-height:46px;border-radius:99px;color:var(--muted);background:#e8e8ed;font-size:14px}.tabs button[aria-selected=true]{background:var(--blue);color:white}.feature-panel{display:grid;grid-template-columns:1fr 1fr;gap:48px;background:white;padding:48px;border-radius:28px;align-items:center;min-height:445px}.feature-label{font-size:13px;color:var(--blue)}.feature-copy h3{font-size:29px;line-height:1.4;margin:15px 0 20px}.feature-copy p{font-size:16px;color:var(--muted)}.feature-copy ol{padding-left:20px;margin:22px 0;line-height:2.1;font-size:14px}.preview-note{font-size:11px;color:var(--muted)}.feature-art{position:relative;min-width:0;height:310px;background:#e8f1fc;border-radius:22px;overflow:hidden}.scene{width:100%;height:100%;object-fit:cover}.scene-label{position:absolute;bottom:0;left:0;right:0;padding:50px 20px 20px;background:linear-gradient(transparent,#000a);color:white;font-size:15px}.feature-mia{position:absolute;width:132px;height:132px;object-fit:contain;right:12px;top:12px;filter:drop-shadow(0 4px 9px #0002)}.sound-art,.word-art{display:flex;align-items:center;justify-content:center;gap:12px;height:100%;padding:20px}.sound-art img{width:48%}.sound-art b{font-size:60px;color:var(--blue);line-height:1.3}.sound-art small{display:block;font-size:12px;color:var(--muted)}.word-art{background:#edf3ef;position:relative}.word-art>img{width:100px;position:absolute;right:10px;top:10px}.word-paper{background:white;padding:27px;border-radius:18px;width:86%;box-shadow:0 10px 30px #244a3612}.word-paper small{font-size:12px;color:var(--muted)}.word-paper b{font-size:29px;display:block;line-height:1.4;margin:12px 0}.word-paper p{font-size:13px}.mia-section{background:white}.mia-grid{display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:64px}.mia-art{display:grid;place-items:center;background:#f2f7fd;border-radius:40px;aspect-ratio:1}.mia-art img{width:88%;height:auto;object-fit:contain}.body-copy{color:var(--muted);font-size:17px;margin:24px 0}.mia-points{display:flex;gap:15px;flex-wrap:wrap;margin-bottom:25px;font-size:13px}.mia-points span{padding-left:13px;border-left:2px solid #82b8ef}.manifesto{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:60px}.manifesto p:last-child{color:var(--muted);margin-top:24px;font-size:17px}.manifesto img{width:100%;height:auto;object-fit:contain;border-radius:28px;mix-blend-mode:multiply}.download-section{background:#e8f1fc;padding:75px 0 85px;text-align:center}.download-inner{display:flex;align-items:center;flex-direction:column}.download-icon{border-radius:22px;margin-bottom:24px;box-shadow:0 10px 25px #25578b20}.download-section h2{font-size:clamp(42px,4.5vw,60px)}.download-section p:not(.eyebrow){color:var(--muted);font-size:18px;margin-top:22px}.platforms{display:flex;gap:18px;justify-content:center;margin:34px 0 20px}.platform{display:flex;align-items:center;text-align:left;gap:18px;width:235px;padding:20px 25px;border:1px solid #ccdced;background:#ffffffb5;border-radius:18px;cursor:default}.platform svg{width:30px;height:34px;fill:none;stroke:#344a61;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.platform strong{font-size:16px;display:block}.platform span{font-size:13px;color:#516a84;display:block;margin-top:4px}.download-section small{font-size:12px;color:var(--muted)}.faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}.faq h2{font-size:32px;margin-top:0}.faq details{border-bottom:1px solid #d8d8df}.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;padding:20px 0;gap:20px;font-size:16px;font-weight:500}.faq summary::-webkit-details-marker{display:none}.faq summary span{font-size:24px;color:var(--muted);transition:transform .18s}.faq details[open] summary span{transform:rotate(45deg)}.faq details p{font-size:14px;color:var(--muted);padding:0 15px 22px 0}footer{padding-bottom:90px}.footer-top{display:flex;justify-content:space-between;gap:20px;align-items:center;border-bottom:1px solid #d8d8df;padding-bottom:24px}.footer-top>span{font-size:14px;color:var(--muted)}.footer-bottom{display:flex;gap:25px;font-size:11px;color:var(--muted);padding-top:18px;flex-wrap:wrap}.footer-bottom a{margin-left:auto}[hidden]{display:none!important}@media(max-width:1000px){.hero{gap:28px}.hero h1{font-size:54px}.hero-desc{font-size:15px}.feature-panel{padding:32px;gap:28px}.mia-grid{gap:35px}.benefits h2{font-size:18px}}@media(max-width:720px){.wrap{width:calc(100% - 40px)}.nav{height:64px;gap:15px}.brand{font-size:20px}.brand img{width:32px;height:32px}.nav-links{display:none}.nav .button{margin-left:auto;padding:9px 15px;font-size:12px}.hero{grid-template-columns:1fr;text-align:center;padding-block:38px 38px;gap:34px}.hero h1{font-size:clamp(36px,9vw,52px);margin:19px 0;line-height:1.2}.eyebrow{font-size:11px}.lead{font-size:21px;margin-bottom:16px}.hero-desc{font-size:14px;line-height:1.85}.hero-actions{justify-content:center;gap:19px;margin-top:24px;font-size:14px}.hero .button{padding:12px 22px}.availability{font-size:11px}.phone{width:260px;max-width:90%}.benefits{grid-template-columns:1fr;gap:26px;padding-block:30px}.benefits article{display:grid;grid-template-columns:30px 1fr;gap:0 8px}.benefits span{grid-row:1/3;margin-top:2px}.benefits h2{margin:0 0 8px;font-size:19px}.benefits p{grid-column:2;font-size:14px}.benefits br{display:none}.section{padding-block:60px}.section h2{font-size:34px}.section-head>p:last-child{font-size:15px}.tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:28px 0 20px}.tabs button{font-size:13px;padding:10px 12px}.feature-panel{grid-template-columns:1fr;padding:25px 22px;gap:28px;border-radius:24px}.feature-copy h3{font-size:25px}.feature-copy p{font-size:15px}.feature-art{height:270px}.feature-mia{width:115px;height:115px}.mia-grid{grid-template-columns:1fr;gap:30px}.mia-art{max-width:330px;width:100%;margin:auto}.mia-grid h2{font-size:32px}.body-copy{font-size:15px}.body-copy br{display:none}.mia-points{font-size:12px;gap:13px}.manifesto{grid-template-columns:1fr;gap:28px}.manifesto img{width:100%;max-height:250px;object-fit:cover}.manifesto p:last-child{font-size:15px}.download-section{padding:60px 0}.download-section h2{font-size:42px}.download-section p:not(.eyebrow){font-size:15px}.platforms{flex-direction:column;width:100%;max-width:310px;gap:12px}.platform{width:100%;padding:17px 24px}.download-section small{font-size:11px;max-width:300px}.faq{grid-template-columns:1fr;gap:22px}.faq h2{font-size:29px}.faq summary{font-size:15px}.footer-top{align-items:flex-start;flex-direction:column;gap:14px}.footer-bottom{flex-direction:column;gap:10px}.footer-bottom a{margin-left:0}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
/* Homepage video artwork replacement; coordinates match the original 721×1568 screen. */
.preview-video{position:absolute;left:4.993%;top:28.571%;width:90.014%;height:19.515%;border-radius:13px;overflow:hidden;background:#dce8ed}.preview-video>img{width:100%;height:100%;object-fit:cover;object-position:center 38%}.preview-video-copy{position:absolute;inset:auto 0 0;padding:24px 11px 10px;background:linear-gradient(transparent,rgba(0,0,0,.76));color:white;line-height:1.4;letter-spacing:.01em;text-align:left}.preview-video-copy small{display:block;font-size:8.5px;margin-bottom:3px;color:#eee}.preview-video-copy strong{display:block;font-size:11.5px;white-space:nowrap}.preview-shuffle{position:absolute;right:9px;top:10px;color:white;font-size:18px;line-height:1;text-shadow:0 1px 5px #0008}@media(max-width:720px){.preview-video-copy{padding:22px 10px 9px}.preview-video-copy strong{font-size:10.5px}.preview-video-copy small{font-size:8px}}

/* SEO content sections: scenarios + compare (added 2026-10-09) */
.scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:44px}
.scenario{background:white;border-radius:28px;padding:34px 34px 30px}
.scenario-tag{font-size:13px;color:var(--blue);font-weight:600;letter-spacing:.06em}
.scenario h3{font-size:22px;line-height:1.4;margin:14px 0 12px}
.scenario>p:not(.scenario-tag){font-size:14px;color:var(--muted)}
.combo{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;font-size:13px}
.combo span{padding:7px 14px;border-radius:99px;background:#eef4fd;color:#245a94}
.combo .plus{color:var(--muted);padding:0;background:none;font-style:normal}
.compare{background:white}
.compare-intro{max-width:820px}
.answer-first{font-size:17px;color:var(--muted);margin-top:22px;line-height:1.9}
.table-wrap{overflow-x:auto;margin-top:40px;border:1px solid var(--line);border-radius:24px}
.compare-table{border-collapse:collapse;width:100%;min-width:720px;font-size:14px}
.compare-table th,.compare-table td{text-align:left;padding:18px 22px;border-bottom:1px solid var(--line);vertical-align:top}
.compare-table thead th{background:#f5f8fd;font-size:14px}
.compare-table thead th:nth-child(2){color:var(--blue)}
.compare-table tbody th{font-weight:600;white-space:nowrap;color:var(--ink)}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:0}
.why{margin-top:46px}
.why h3{font-size:22px;margin-bottom:18px}
.why ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:16px 32px}
.why li{position:relative;padding-left:26px;font-size:15px;color:var(--muted)}
.why li:before{content:"";position:absolute;left:0;top:11px;width:9px;height:9px;border-radius:50%;background:var(--blue)}
.compare-note{font-size:12px;color:var(--muted);margin-top:30px}
.compare-more{margin-top:26px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
@media(max-width:720px){.scenario-grid{grid-template-columns:1fr;gap:18px}.scenario{padding:26px 22px}.scenario h3{font-size:20px}.why ul{grid-template-columns:1fr}.answer-first{font-size:15px}}

/* Article (blog) page (added 2026-10-09) */
.article{max-width:760px;padding-block:56px 84px}
.article h1{font-size:clamp(30px,4vw,44px);line-height:1.28;margin:16px 0 14px}
.article-meta{font-size:13px;color:var(--muted);margin-bottom:30px}
.article h2{font-size:26px;line-height:1.35;margin:46px 0 16px}
.article p{font-size:16px;color:#333;line-height:1.95;margin:16px 0}
.article .answer-first{font-size:18px;color:var(--ink)}
.article ul{padding-left:0;list-style:none;margin:18px 0;display:grid;gap:12px}
.article ul li{position:relative;padding-left:26px;color:var(--muted);font-size:15px}
.article ul li:before{content:"";position:absolute;left:0;top:11px;width:9px;height:9px;border-radius:50%;background:var(--blue)}
.article details{border-bottom:1px solid var(--line)}
.article details:first-of-type{border-top:1px solid var(--line)}
.article summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:18px 0;font-weight:600;font-size:16px}
.article summary::-webkit-details-marker{display:none}
.article summary span{font-size:22px;color:var(--muted)}
.article details[open] summary span{transform:rotate(45deg)}
.article details p{font-size:15px;color:var(--muted);padding:0 0 20px;margin:0}
.article .button{margin-top:36px}

/* Blog index + related + cta (added 2026-10-09) */
.blog-hero{padding:70px 0 10px}
.blog-hero h1{font-size:clamp(34px,4.4vw,52px);line-height:1.2;margin:16px 0 14px}
.blog-hero p{color:var(--muted);font-size:17px}
.blog-list{padding-top:34px}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:34px}
.chip{padding:9px 20px;border-radius:99px;background:#e8e8ed;color:var(--muted);font-size:14px;min-height:40px}
.chip.active{background:var(--blue);color:#fff}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{display:flex;flex-direction:column;background:white;border-radius:24px;overflow:hidden;border:1px solid var(--line);transition:transform .18s,box-shadow .18s}
.post-card:hover{transform:translateY(-3px);box-shadow:0 18px 40px -22px #27354240}
.post-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:#eef4fd}
.post-thumb img{width:100%;height:100%;object-fit:cover}
.post-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 24px}
.post-meta{font-size:12px;color:var(--blue);font-weight:600}
.post-title{font-size:18px;font-weight:600;line-height:1.4}
.post-desc{font-size:13px;color:var(--muted);line-height:1.7}
.post-card.featured{flex-direction:row;align-items:stretch;margin-bottom:34px}
.post-card.featured .post-thumb{flex:0 0 46%;aspect-ratio:auto}
.post-card.featured .post-body{justify-content:center;padding:34px}
.post-card.featured .post-title{font-size:26px}
.post-card.featured .post-desc{font-size:15px}
.app-list{list-style:none;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:0 28px}
.app-list li{padding:12px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:15px}
.app-list a{color:var(--blue);font-weight:600}
.article .app-list li:before,.article .related li:before{display:none}
.article .app-list li,.article .related li{padding-left:0}
.related{margin-top:54px;border-top:1px solid var(--line);padding-top:35px}
.related h2{font-size:22px;margin-bottom:16px}
.related ul{list-style:none;padding:0;display:grid;gap:12px}
.related li a{color:var(--blue);font-size:15px}
.cta-row{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:36px}
.article .cta-row .button{margin-top:0}
.compare-links{font-size:14px;color:var(--muted);margin-top:16px}
.compare-links a{color:var(--blue)}
/* 功能入口（首页 #learn-more） */
.feature-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.feature-links a{padding:12px 20px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:15px;color:#1d1d1f;transition:border-color .15s,color .15s,transform .15s}
.feature-links a:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}
.feature-links-more{margin-top:22px;font-size:15px}
@media(max-width:1000px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.post-grid{grid-template-columns:1fr}.post-card.featured{flex-direction:column}.post-card.featured .post-thumb{flex:none;aspect-ratio:16/9}.post-card.featured .post-title{font-size:22px}.app-list{grid-template-columns:1fr}}

/* Brand wordmark and page-only navigation. */
.brand-wordmark{display:inline-flex;align-items:baseline;gap:5px;font-family:"Hiragino Sans GB","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.4;letter-spacing:.06em}.brand-name{color:var(--blue);font-weight:600}.brand-category{font-size:.76em;font-weight:500;color:#47546b;letter-spacing:.1em}.nav-links a{display:inline-flex;align-items:center;min-height:44px;font-weight:600;color:#2b2b31}.nav-links a:hover,.nav-links a:focus-visible{color:var(--blue)}.nav-cta{margin-left:10px;padding:11px 24px;font-size:15px;font-weight:600;box-shadow:0 8px 20px -10px #0071e399}.nav-cta:hover{transform:translateY(-1px)}.nav-short{display:none}@media(max-width:720px){.nav{gap:12px}.nav-links{display:flex;gap:12px;margin-left:auto;font-size:13px}.nav-full{display:none}.nav-short{display:inline}.nav-cta{display:none}.brand{font-size:20px;gap:8px}.brand-wordmark{gap:3px}}

/* Homepage motion; never alters image dimensions or hides content. */
.product{position:relative;isolation:isolate}
.home-motion .hero-copy>*{animation:home-enter .8s cubic-bezier(.2,.7,.2,1) both}
.home-motion .hero-copy>h1{animation-delay:.08s}
.home-motion .hero-copy>.lead{animation-delay:.16s}
.home-motion .hero-copy>.hero-desc{animation-delay:.24s}
.home-motion .hero-copy>.hero-actions{animation-delay:.32s}
.home-motion .hero-copy>.availability{animation-delay:.4s}
.home-motion .phone{animation:phone-float 6s ease-in-out infinite}
.home-motion .product:before{content:"";position:absolute;inset:9% 0 16%;z-index:-1;border-radius:50%;background:radial-gradient(ellipse,#bfdcff99,transparent 68%);animation:glow-breathe 6s ease-in-out infinite;pointer-events:none}
.hero-accents{position:absolute;inset:0;pointer-events:none;display:none}
.home-motion .hero-accents{display:block}
.motion-chip{position:absolute;display:inline-flex;align-items:center;gap:8px;padding:10px 15px;border:1px solid #fff;border-radius:16px;background:#fffffff2;box-shadow:0 12px 35px #315f9920;color:#345a80;font-size:13px;white-space:nowrap;animation:chip-float 5s ease-in-out infinite}
.motion-chip>i{font-style:normal;color:var(--blue);font-size:18px}
.chip-listen{left:0;top:18%;animation-delay:-1s}
.chip-speak{right:-5px;top:48%;animation-delay:-2.5s}
.chip-again{left:0;top:74%;animation-delay:-4s}
.mini-wave{display:flex;gap:3px;align-items:center;height:18px}
.mini-wave b{display:block;width:3px;height:9px;background:var(--blue);border-radius:3px;animation:wave-talk 1.1s ease-in-out infinite alternate}
.mini-wave b:nth-child(2){animation-delay:-.3s;height:16px}.mini-wave b:nth-child(3){animation-delay:-.7s;height:12px}.mini-wave b:nth-child(4){animation-delay:-.4s;height:18px}.mini-wave b:nth-child(5){animation-delay:-.8s}
.home-motion .mia-art img{animation:mia-sway 5s ease-in-out infinite;transform-origin:50% 85%}
.home-motion .scenario{transition:transform .25s,box-shadow .25s}
@media(hover:hover){.home-motion .scenario:hover{transform:translateY(-5px);box-shadow:0 15px 40px #315f9912}}
.motion-paused *, .motion-paused *:before, .motion-outside *, .motion-outside:before{animation-play-state:paused!important}
@keyframes home-enter{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
@keyframes phone-float{0%,100%{transform:translateY(0) rotate(-.5deg)}50%{transform:translateY(-10px) rotate(.5deg)}}
@keyframes chip-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes glow-breathe{0%,100%{opacity:.6;transform:scale(.96)}50%{opacity:1;transform:scale(1.04)}}
@keyframes wave-talk{from{transform:scaleY(.4)}to{transform:scaleY(1)}}
@keyframes mia-sway{0%,100%{transform:rotate(-2deg)}50%{transform:rotate(2deg)}}
@media(max-width:720px){.hero-accents{inset:0 -5px 65px}.motion-chip{font-size:11px;padding:7px 10px;gap:6px}.chip-listen{left:0;top:14%}.chip-speak{right:0;top:48%}.chip-again{left:0;top:78%}}
@media(prefers-reduced-motion:reduce){.hero-accents{display:none!important}.home-motion .hero-copy>*{opacity:1;transform:none}}

/* —— MengTo 风格优化：hero 数据背书 / 分层阴影 / 滚动渐显 —— */
.hero-stats{display:flex;flex-wrap:wrap;gap:14px 40px;list-style:none;margin:28px 0 0;padding:22px 28px 0 0;border-top:1px solid var(--line)}
.hero-stats li{min-width:96px}
.hero-stats b{display:block;font-size:30px;font-weight:650;line-height:1.25;color:var(--blue);letter-spacing:.01em}
.hero-stats span{font-size:13px;color:var(--muted)}
.feature-panel,.platform,.word-paper,.mia-art,.download-icon,.post-card{box-shadow:0 0 0 1px rgba(0,0,0,.05),0 1px 1px -.5px rgba(0,0,0,.06),0 3px 3px -1.5px rgba(0,0,0,.06),0 6px 6px -3px rgba(0,0,0,.06),0 12px 12px -6px rgba(0,0,0,.06),0 24px 24px -12px rgba(0,0,0,.06)}
.hero .phone{box-shadow:0 0 0 1px rgba(0,0,0,.05),0 2.8px 2.2px rgba(0,0,0,.034),0 6.7px 5.3px rgba(0,0,0,.048),0 12.5px 10px rgba(0,0,0,.06),0 22.3px 17.9px rgba(0,0,0,.072),0 41.8px 33.4px rgba(0,0,0,.086),0 60px 50px rgba(0,0,0,.12)}
@media(prefers-reduced-motion:no-preference){.reveal{opacity:0;transform:translateY(22px);transition:opacity .75s cubic-bezier(.2,.7,.2,1),transform .75s cubic-bezier(.2,.7,.2,1)}.reveal.in{opacity:1;transform:none}}
@media(max-width:720px){.hero-stats{gap:12px 26px;padding-right:0}.hero-stats li{min-width:78px}.hero-stats b{font-size:24px}.hero-stats span{font-size:12px}}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin:0 0 18px}.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--blue)}.crumbs [aria-current]{color:var(--ink);flex:1 1 0;min-width:0;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topics{margin-top:34px}.topics h2{font-size:22px;margin:0 0 16px}.topics ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.topics a{display:flex;flex-direction:column;gap:6px;height:100%;padding:18px 20px;background:white;border:1px solid var(--line);border-radius:18px;color:var(--ink);transition:border-color .18s}.topics a:hover{border-color:var(--blue)}.topics strong{font-size:16px}.topics span{font-size:13px;line-height:1.5;color:var(--muted)}
@media(max-width:900px){.topics ul{grid-template-columns:repeat(2,1fr)}}@media(max-width:520px){.topics ul{grid-template-columns:1fr}}