:root{--ink:#1d1d1f;--muted:#6e6e73;--blue:#006ad7;--line:#e6e6e9;--paper:#fafafa;--font:-apple-system,BlinkMacSystemFont,"Noto Sans SC","Segoe UI","PingFang SC","Microsoft YaHei UI","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--font);-webkit-font-smoothing:antialiased}
button,a{-webkit-tap-highlight-color:transparent}
button,input{font:inherit}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
button{color:inherit}
button:disabled{cursor:default}
button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #087df7;outline-offset:5px}
h1,h2,h3,p{margin:0}
img{max-width:100%;display:block}
button{border:0}
svg.icon{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.svg-defs{position:absolute;width:0;height:0;overflow:hidden}
.container{width:min(1120px,calc(100% - 64px));margin-inline:auto}
.section-space{padding-block:104px}
.skip-link{position:fixed;top:10px;left:12px;transform:translateY(-150%);background:#fff;padding:12px;z-index:100}
.skip-link:focus{transform:none}
.header{position:sticky;top:0;z-index:20;background:rgba(250,250,250,.85);backdrop-filter:blur(24px);border-bottom:1px solid rgba(0,0,0,.06)}
.nav-shell{width:min(1240px,calc(100% - 64px));height:72px;margin:auto;display:flex;align-items:center;gap:32px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;font-size:20px;font-weight:700;letter-spacing:-.7px}
.brand img{width:29px;height:32px;object-fit:contain}
.navigation{display:flex;gap:34px;align-items:center;margin-left:auto;margin-right:18px;font-size:13px;color:#55555a}
.navigation a{padding:14px 0;transition:color .2s}
.navigation a:hover{color:var(--blue)}
.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;border-radius:999px;padding:0 25px;color:#fff;background:var(--ink);font-size:15px;font-weight:600;line-height:1.4;transition:background .2s,box-shadow .2s,transform .2s}
.button:hover{background:#38383c;transform:translateY(-1px)}
.button-small{min-height:36px;padding:0 17px;font-size:12px;font-weight:500;gap:8px}
.button-small .icon{width:16px;height:16px}
.button-blue{background:var(--blue);box-shadow:0 5px 16px #0076ed15}
.button-blue:hover{background:#0068da;box-shadow:0 7px 22px #0076ed22}
.text-link{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:none;padding:0;color:var(--blue);font-size:15px;line-height:1.6}
.text-link:hover{color:#0058b7}
.text-link .icon{width:19px;height:19px}
.icon-button{background:transparent;padding:8px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%}
.menu-button{display:none}
.hero{overflow:hidden;padding-top:68px}
.hero-copy{text-align:center;position:relative;z-index:1}
.eyebrow{font-size:13px;font-weight:600;letter-spacing:1.2px;line-height:1.7;display:flex;align-items:center;gap:8px}
.hero .eyebrow{justify-content:center;color:#55555b}
.blue-dot{width:6px;height:6px;border-radius:50%;background:#2585f9;box-shadow:0 0 0 4px #e9f2ff}
.muted{color:var(--muted)}
.hero h1{font-size:clamp(50px,5.6vw,80px);font-weight:750;letter-spacing:-4px;line-height:1.2;margin:22px 0 22px}
.hero h1 span{color:var(--blue)}
.hero-description{font-size:19px;line-height:1.7;letter-spacing:.2px;color:#737379}
.hero-actions{display:flex;justify-content:center;align-items:center;gap:28px;margin-top:29px}
.hero-note{color:#6e6e73;font-size:11px;margin-top:17px;line-height:1.6}
.hero-stage{max-width:1060px;position:relative;margin-top:55px}
.ambient{position:absolute;inset:-60px -100px 20px;background:radial-gradient(ellipse at 25% 45%,#cadfff 0,transparent 53%),radial-gradient(ellipse at 85% 65%,#d8d9f9 0,transparent 52%);filter:blur(50px);opacity:.64;pointer-events:none}
.screen-button{display:block;padding:0;position:relative;background:white;overflow:hidden;text-align:initial;width:100%;border:1px solid #dddddf;border-radius:14px}
.screen-button img{width:100%;height:auto}
.hero-screen{box-shadow:0 25px 65px -32px #26385950,0 3px 10px #1a2d4506;transform:perspective(1600px) rotateX(2deg);transition:transform .35s}
.hero-screen:hover{transform:perspective(1600px) rotateX(0deg) translateY(-2px)}
.zoom-hint{position:absolute;bottom:16px;right:16px;display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.93);color:#4e5158;font-size:11px;padding:9px 12px;border:1px solid #dddfe3;border-radius:999px;box-shadow:0 2px 8px #00000008;opacity:0;transition:opacity .2s}
.zoom-hint .icon{width:15px;height:15px}
.screen-button:hover .zoom-hint,.screen-button:focus-visible .zoom-hint{opacity:1}
.stage-caption{display:flex;justify-content:space-between;position:relative;padding-top:23px;font-size:12px;color:var(--muted)}
.caption-detail{color:#6e6e73;font-size:11px}
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:70px;margin-top:88px;margin-bottom:102px;padding-inline:22px}
.mini-mark{display:block;font-size:11px;color:#6e6e73;font-weight:600;letter-spacing:1px;margin-bottom:16px}
.principles h2{font-size:21px;font-weight:600;letter-spacing:-.5px}
.principles p{color:var(--muted);font-size:14px;line-height:1.85;margin-top:12px}
.experience{background:#f0f2f5}
.section-heading{text-align:center}
.section-heading .eyebrow{justify-content:center}
.section-heading h2,.simple-copy h2,.download-copy h2{font-size:clamp(32px,3.5vw,49px);font-weight:650;letter-spacing:-1.8px;line-height:1.35;margin-top:16px}
.section-heading>p:last-child{font-size:16px;color:var(--muted);margin-top:17px;line-height:1.8}
.mobile-only{display:none}
.product-tabs{display:flex;width:fit-content;max-width:100%;margin:35px auto 38px;background:#e6e8ec;padding:5px;border-radius:100px;gap:4px}
.product-tabs button{display:flex;align-items:center;justify-content:center;gap:8px;padding:12px 25px;border-radius:99px;background:transparent;color:#6b6d72;font-size:14px;transition:background .2s,color .2s,box-shadow .2s}
.product-tabs button .icon{width:19px;height:19px}
.product-tabs button[aria-selected=true]{background:#fff;color:#0068d4;box-shadow:0 2px 5px #00000007}
.product-tabs button[data-product=xlsx][aria-selected=true]{color:#007c42}
.product-tabs button[data-product=pptx][aria-selected=true]{color:#aa4d00}
.product-tabs button[data-product=pdf][aria-selected=true]{color:#bf2346}
.product-panel{max-width:960px;margin:auto}
.product-intro{display:flex;align-items:center;justify-content:space-between;margin-bottom:25px;padding-inline:5px;gap:20px}
.product-intro h3{font-size:22px;font-weight:600;letter-spacing:-.6px}
.product-intro p{font-size:13px;color:var(--muted);margin-top:9px;line-height:1.75}
.format-label{font-size:11px;color:#6e6e73;border:1px solid #cdd0d7;padding:6px 12px;border-radius:7px;letter-spacing:1px}
.editor-screen{box-shadow:0 16px 36px -24px #17315340}
.image-note{text-align:center;font-size:11px;color:#73777d;margin-top:20px}
.simple-section{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:center;padding-block:132px}
.section-description{font-size:14px;line-height:1.9;color:var(--muted);margin-top:24px}
.plain-list{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:13px;font-size:13px;color:#4c4c51}
.plain-list li{display:flex;align-items:center;gap:9px}
.plain-list .icon{width:16px;height:16px;color:var(--blue)}
.search-visual{padding:55px 0 24px;position:relative}
.search-visual::before{content:"";position:absolute;inset:0 -25px;background:radial-gradient(ellipse,#dbe8ff80,transparent 68%);z-index:-1}
.search-demo{background:rgba(255,255,255,.95);border:1px solid #ececf0;border-radius:19px;padding:25px;box-shadow:0 22px 65px -26px #234b953d;transform:rotate(-2deg)}
.search-demo-top{display:flex;align-items:center;gap:8px;color:#4e535b;font-size:12px}
.search-demo-top .icon{width:16px;height:16px}
.search-demo-top kbd{margin-left:auto;border:1px solid #e0e2e6;border-radius:5px;font-family:inherit;padding:3px 6px;color:#6e6e73;font-size:10px}
.search-demo-input{border-bottom:1px solid #e9ebef;padding:26px 0 22px;font-size:26px;display:flex;align-items:center;gap:4px}
.caret{height:25px;width:2px;background:#1685fc}
.search-demo-count{font-size:10px;color:#6e6e73;margin-left:auto}
.search-demo-result{display:flex;align-items:center;gap:13px;padding:18px 13px;margin-top:18px;background:#f0f6ff;border:1px solid #e4eeff;border-radius:10px}
.formula-icon{width:38px;height:38px;background:#dceaff;color:#2887ef;display:grid;place-items:center;border-radius:9px;font-size:21px;font-style:italic;font-family:Georgia,serif}
.search-demo-result strong{display:block;font-size:13px;font-weight:600}
.search-demo-result span{display:block;font-size:10px;color:#6e6e73;margin-top:5px}
.search-demo-result>.icon{margin-left:auto;width:16px;height:16px;color:#7a91b4}
.search-demo>p{font-size:10px;color:#6e6e73;margin-top:20px;text-align:center}
.search-real{display:flex;margin:28px auto 0;font-size:12px}
.download-section{background:#f0f2f5}
.download-layout{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center;max-width:1040px}
.app-icon{width:112px;height:112px;border-radius:26px;display:grid;place-items:center;background:linear-gradient(160deg,#fff,#f4f9ff);box-shadow:inset 0 0 0 1px white,0 12px 30px #42557114;margin-bottom:33px}
.app-icon img{width:59px;height:66px;object-fit:contain}
.download-copy h2{margin-top:10px}
.download-copy>p:last-child{color:var(--muted);font-size:16px;line-height:1.8;margin-top:21px}
.download-card{background:white;border:1px solid #e6e8ec;border-radius:23px;padding:32px;box-shadow:0 20px 50px -35px #2236533d}
.download-card-heading{display:flex;align-items:center;gap:13px;position:relative;flex-wrap:wrap}
.windows-icon{width:29px;height:29px;fill:#1d1d1f;stroke:none;flex-shrink:0}
.download-card h3{font-size:17px;font-weight:600;letter-spacing:-.3px}
.download-card-heading p{font-size:11px;color:var(--muted);margin-top:7px}
.beta-badge{font-size:10px;color:#6d717b;background:#f0f2f5;padding:4px 7px;border-radius:5px;margin-left:auto}
.release-facts{border-top:1px solid #eeeef0;margin:27px 0 24px;padding-top:24px;display:grid;gap:17px}
.release-facts>div{display:flex;justify-content:space-between;gap:14px;font-size:12px}
.release-facts dt{color:#6e6e73}
.release-facts dd{margin:0;color:#393c43;font-weight:500}
.download-button{width:100%;background:var(--blue);border-radius:11px;min-height:51px;font-size:14px}
.download-button:disabled{background:#e9f1fd;color:#5e7ba0;box-shadow:none;transform:none}
.download-status{font-size:11px;line-height:1.8;text-align:center;color:#6e6e73;margin-top:13px}
.download-links{display:flex;justify-content:space-between;margin-top:28px;padding-top:20px;border-top:1px solid #eeeef0}
.download-links .text-link{font-size:12px}
.unsigned-note{text-align:center;color:#6e6e73;font-size:10px;margin-top:22px}
.faq-section{max-width:850px}
.faq-section>h2{text-align:center;font-size:34px;font-weight:650;letter-spacing:-1px;margin-bottom:42px}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list details:first-child{border-top:1px solid var(--line)}
summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 0;font-size:15px;cursor:pointer}
summary::-webkit-details-marker{display:none}
summary .icon{width:18px;height:18px;color:#777b84;transition:transform .2s}
details[open] summary .icon{transform:rotate(45deg)}
details>p{color:var(--muted);font-size:14px;line-height:1.9;padding:0 32px 25px 0}
.footer{padding:0 0 27px}
.footer .container{border-top:1px solid var(--line);padding-top:31px}
.footer-top{display:flex;align-items:center;gap:28px}
.footer-top .brand{font-size:17px}
.footer-top>span{color:#6e6e73;font-size:12px}
.back-top{margin-left:auto;font-size:12px;color:#77797e}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:33px;font-size:10px;color:#6e6e73}
.footer-bottom>div{display:flex;gap:24px}
.footer button{padding:6px 0;background:transparent;color:#73757b;font-size:11px}
dialog{border:1px solid #e7e8ec;padding:0;color:var(--ink);border-radius:22px;box-shadow:0 32px 100px #0003;max-height:90vh;max-height:90dvh}
dialog::backdrop{background:#19222e80;backdrop-filter:blur(10px)}
body:has(dialog[open]){overflow:hidden}
.dialog-close{position:absolute;right:15px;top:15px;background:#f2f3f5;z-index:2;width:34px;height:34px}
.dialog-close .icon{width:17px;height:17px}
.info-dialog{width:min(580px,calc(100% - 32px));padding:43px 38px 32px}
.info-dialog h2{font-size:25px;letter-spacing:-.6px;margin-bottom:20px;line-height:1.45;padding-right:20px}
.info-dialog .eyebrow{font-size:11px;margin-bottom:12px}
.info-dialog p{font-size:14px;color:#686b72;line-height:1.85;margin-top:15px}
.info-dialog ul,.info-dialog ol{padding-left:20px;font-size:14px;line-height:1.9;color:#5f626a}
.info-dialog li{margin-top:10px}
.info-dialog li p{margin-top:3px}
.info-dialog .fine-print{font-size:12px;color:#6e6e73}
.notice{background:#f5f6f8;padding:15px 18px;border-radius:10px}
.hash-box{margin-top:25px;padding:18px;background:#f3f5f8;border-radius:10px}
.hash-box>div{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12px}
.hash-box button{font-size:12px}
.hash-box code{display:block;word-break:break-all;font-size:11px;color:#6c7280;line-height:1.7;margin-top:13px}
.hash-box #copy-status{font-size:11px;margin:0}
.hash-box #copy-status:not(:empty){margin-top:10px}
.image-dialog{width:min(1440px,calc(100% - 48px));background:#f9fafb;padding:10px 10px 15px;border-radius:13px}
.image-dialog img{max-height:calc(90dvh - 70px);width:100%;object-fit:contain;border-radius:5px}
.image-dialog p{text-align:center;font-size:12px;color:#6c727c;margin-top:13px}
.image-dialog .dialog-close{background:#fff;box-shadow:0 2px 8px #0002;top:20px;right:20px}

@media(min-width:1600px){.hero{padding-top:86px}
.hero h1{font-size:86px}
.hero-stage{margin-top:65px}
}

@media(max-width:1000px){.navigation{gap:22px;margin-right:5px}
.nav-shell{gap:24px}
.hero h1{letter-spacing:-3px}
.principles{gap:32px}
.simple-section{gap:35px}
.download-layout{gap:45px}
.download-card{padding:25px}
.beta-badge{margin-left:42px}
.download-card h3{font-size:16px}
.simple-copy h2{font-size:36px}
.search-demo{padding:20px}
.search-demo-result{padding:14px 10px;gap:9px}
}

@media(max-width:700px){html{scroll-padding-top:76px}
.container{width:calc(100% - 40px)}
.nav-shell{width:calc(100% - 32px);height:64px;gap:13px}
.brand{font-size:17px;gap:8px;letter-spacing:-.4px}
.brand img{width:25px;height:28px}
.header .button-small{margin-left:auto;min-height:32px;padding:0 13px;font-size:10px}
.header .button-small .icon{display:none}
.menu-button{display:flex;padding:5px}
.menu-button .icon{width:23px;height:23px}
.navigation{display:none;position:absolute;top:64px;left:0;right:0;margin:0;padding:16px 24px 24px;background:#fafafaf7;border-bottom:1px solid var(--line);box-shadow:0 12px 20px #00000006}
.navigation.open{display:flex;flex-direction:column;align-items:stretch;gap:0}
.navigation a{font-size:15px;padding:14px 0}
.hero{padding-top:48px}
.eyebrow{font-size:11px;letter-spacing:.8px}
.hero h1{font-size:clamp(38px,8.5vw,58px);letter-spacing:-2px;margin:22px 0 19px}
.hero-description{font-size:15px;line-height:1.8}
.hero-actions{gap:21px;margin-top:24px;flex-wrap:wrap}
.hero-actions .button{font-size:13px;min-height:46px;padding-inline:19px;gap:8px}
.hero-actions .icon{width:18px;height:18px}
.hero-actions .text-link{font-size:13px;gap:5px}
.hero-note{font-size:10px;margin-top:16px}
.hero-stage{margin-top:38px}
.hero-screen{border-radius:8px;transform:none}
.hero-screen:hover{transform:none}
.ambient{inset:-30px -30px 0;filter:blur(30px)}
.stage-caption{padding-top:16px;justify-content:center;font-size:11px}
.caption-detail{display:none}
.zoom-hint{bottom:9px;right:9px;padding:7px;opacity:1}
.hero-screen .zoom-hint{font-size:0;gap:0}
.zoom-hint .icon{width:13px;height:13px}
.principles{margin-block:47px 55px;gap:22px;padding-inline:0}
.mini-mark{font-size:9px;margin-bottom:11px}
.principles h2{font-size:14px;line-height:1.6;letter-spacing:-.4px}
.principles p{font-size:11px;margin-top:8px;line-height:1.85}
.principles p br{display:none}
.section-space{padding-block:65px}
.section-heading h2{font-size:33px;line-height:1.4;letter-spacing:-1px;margin-top:12px}
.mobile-only{display:block}
.section-heading>p:last-child{font-size:13px;line-height:1.9;margin-top:14px;max-width:290px;margin-inline:auto}
.product-tabs{margin:26px auto 28px;padding:4px;gap:1px;width:100%;max-width:380px}
.product-tabs button{padding:10px 8px;flex:1;font-size:12px;gap:5px}
.product-tabs button .icon{width:16px;height:16px}
.product-intro{gap:8px;padding:0;margin-bottom:17px}
.product-intro h3{font-size:17px;line-height:1.5;letter-spacing:-.4px}
.product-intro p{font-size:11px;margin-top:6px;max-width:260px}
.format-label{font-size:9px;padding:5px 7px}
.editor-screen{border-radius:7px}
.image-note{font-size:10px;margin-top:15px}
.simple-section{grid-template-columns:1fr;gap:12px;padding-block:67px}
.simple-copy h2{font-size:35px;letter-spacing:-1px;line-height:1.4}
.section-description{font-size:13px;margin-top:20px}
.desktop-only{display:none}
.plain-list{font-size:12px;gap:12px;margin-top:22px}
.search-visual{padding:30px 5px 0;max-width:480px;width:100%;margin:auto}
.search-visual::before{inset:0}
.search-demo{padding:20px}
.search-demo-result{padding:15px 12px;gap:12px}
.search-demo-result span{font-size:10px}
.search-real{font-size:11px;margin-top:24px}
.download-layout{grid-template-columns:1fr;gap:35px;max-width:480px}
.download-copy{text-align:center}
.app-icon{width:80px;height:80px;border-radius:20px;margin:0 auto 24px}
.app-icon img{width:42px;height:46px}
.download-copy .eyebrow{justify-content:center}
.download-copy h2{font-size:36px;letter-spacing:-1px;line-height:1.4}
.download-copy>p:last-child{font-size:14px;margin-top:17px}
.download-card{border-radius:19px;padding:25px}
.download-card-heading{gap:11px}
.download-card h3{font-size:16px}
.beta-badge{margin-left:auto;font-size:9px}
.download-card-heading p{font-size:10px}
.windows-icon{width:25px;height:25px}
.release-facts{margin-top:24px}
.faq-section>h2{font-size:28px;margin-bottom:29px}
.faq-list summary{font-size:13px;line-height:1.7;padding:20px 0;gap:12px}
.faq-list details>p{font-size:12px;padding-right:0;padding-bottom:20px}
.footer .container{padding-top:23px}
.footer-top{gap:15px;flex-wrap:wrap}
.footer-top .brand{font-size:15px}
.footer-top>span{display:none}
.back-top{font-size:11px}
.footer-bottom{margin-top:23px;flex-wrap:wrap;gap:13px;font-size:9px}
.footer-bottom>div{gap:20px}
.footer button{font-size:10px}
.info-dialog{padding:38px 24px 25px;border-radius:18px}
.info-dialog h2{font-size:21px}
.info-dialog p,.info-dialog ul,.info-dialog ol{font-size:13px}
.image-dialog{width:calc(100% - 20px);padding:5px 5px 13px}
.image-dialog .dialog-close{width:28px;height:28px;top:10px;right:10px}
.image-dialog p{font-size:10px;padding-inline:10px}
.image-dialog img{max-height:calc(90dvh - 65px)}
}

@media(max-width:360px){.container{width:calc(100% - 32px)}
.nav-shell{gap:8px}
.header .button-small{font-size:9px;padding-inline:10px}
.hero-actions{gap:16px}
.hero-actions .button{padding-inline:15px;font-size:12px}
.hero-actions .text-link{font-size:12px}
.principles{gap:14px}
.principles h2{font-size:12px}
.principles p{font-size:10px}
.download-card{padding:21px}
.beta-badge{margin-left:36px}
.product-intro h3{font-size:15px}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
*,*::before,*::after{animation:none!important;transition:none!important}
.hero-screen,.hero-screen:hover{transform:none}
}

@media(max-width:700px){.hero h1 span{display:inline-block}
.principles{grid-template-columns:1fr;gap:23px;max-width:480px}
.principles>div{display:grid;grid-template-columns:25px 1fr;column-gap:13px;align-items:baseline}
.principles .mini-mark{grid-row:1/3;font-size:10px}
.principles h2{font-size:17px;letter-spacing:-.3px}
.principles p{grid-column:2;font-size:12px;margin-top:5px}
.principles p br{display:none}
}