:root{color-scheme:light;--paper:#fafafa;--surface:#fff;--ink:#37474f;--strong:#17272e;--muted:#62727a;--line:#dce3e6;--soft:#eceff1;--accent:#673ab7;--shadow:0 24px 65px #17272e12;--mark:url('/assets/mark-dark.svg');--serif:Georgia,'Times New Roman','Songti SC','Noto Serif CJK SC',serif}
:root[data-theme=dark]{color-scheme:dark;--paper:#191c1e;--surface:#202528;--ink:#d6dbdf;--strong:#f0eee6;--muted:#a1adb4;--line:#343b40;--soft:#282e32;--accent:#cfbd97;--shadow:0 24px 65px #0003;--mark:url('/assets/mark-light.svg')}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:2rem}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 -apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC',sans-serif}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer;background:none;border:0}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:5px}::selection{background:var(--soft);color:var(--accent)}.wrap{max-width:1240px;margin:auto;padding-left:48px;padding-right:48px}.site-header{display:flex;align-items:center;justify-content:space-between;min-height:116px}.identity{display:flex;align-items:center;gap:13px;font:600 25px/1 var(--serif);letter-spacing:-.04em;color:var(--strong)}.mark{display:inline-block;background-image:var(--mark);background-size:contain;background-repeat:no-repeat;background-position:center;width:38px;height:38px}.site-header nav{display:flex;align-items:center;gap:32px;font-size:14px}.site-header nav button{min-height:40px;min-width:40px;padding:6px}.nav-about{color:var(--muted)}.nav-about:hover,.footer-links a:hover{color:var(--accent)}.appearance-symbol{font-size:24px;line-height:1}.hero{padding-top:83px;padding-bottom:92px}.eyebrow{text-transform:uppercase;letter-spacing:.13em;font-size:12px;line-height:1.5;color:var(--muted);display:flex;align-items:center;gap:14px;font-weight:500}.small-line{width:28px;height:1px;background:var(--accent)}h1,h2,h3,p{margin:0}h1{font:400 clamp(72px,8.8vw,124px)/1.05 var(--serif);letter-spacing:-.055em;color:var(--strong);margin:32px 0 43px}h1 em{font-weight:400;color:var(--accent)}html[lang=zh-Hans] h1{font-size:clamp(56px,7vw,94px);letter-spacing:.04em;line-height:1.3}html[lang=zh-Hans] h1 em{font-style:normal}.hero-bottom{display:flex;align-items:end;justify-content:space-between;gap:64px}.intro{max-width:575px;font-size:20px;line-height:1.6}.hero-actions{display:flex;flex-direction:column;align-items:start;gap:13px;flex-shrink:0}.button{display:inline-flex;justify-content:center;align-items:center;border-radius:5px;padding:12px 27px;font-weight:500;font-size:16px;min-height:48px;transition:background .15s,transform .15s}.primary{background:var(--strong);color:var(--paper)}.primary:hover{background:var(--accent);transform:translateY(-1px)}.availability,.caption{font-size:13px;color:var(--muted)}.app-showcase{margin:0;background:var(--soft);display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center;padding:68px;border-radius:8px;overflow:hidden}.document-preview{max-width:330px;transform:rotate(-2deg);box-shadow:var(--shadow);background:#fff}.document-preview img{display:block;width:100%;height:auto}.showcase-note h2{font:400 41px/1.15 var(--serif);letter-spacing:-.025em;color:var(--strong);margin:20px 0}.showcase-note p{font-size:16px;line-height:1.7}.showcase-note .caption{display:block;margin-top:30px}.writing{padding-top:140px;padding-bottom:110px}.section-heading h2{font:400 48px/1.15 var(--serif);letter-spacing:-.035em;color:var(--strong);margin-top:19px;margin-bottom:56px}.feature-list article{border-top:1px solid var(--line);display:grid;grid-template-columns:50px 1fr 180px;gap:25px;padding:32px 0;align-items:start}.feature-number{font-family:ui-monospace,monospace;font-size:13px;color:var(--muted);padding-top:5px}.feature-list h3{font:400 28px/1.25 var(--serif);color:var(--strong);margin-bottom:12px;letter-spacing:-.02em}.feature-list p{max-width:650px;color:var(--muted);font-size:16px}.feature-detail{font-size:13px;color:var(--muted);justify-self:end;padding-top:7px}kbd{font:14px/1.3 ui-monospace,monospace;justify-self:end;border:1px solid var(--line);padding:7px 10px;border-radius:5px;background:var(--surface);box-shadow:0 2px 0 var(--line)}.closing{border-top:1px solid var(--line);text-align:center;padding-top:78px;padding-bottom:100px}.closing .mark{width:48px;height:48px;margin-bottom:29px}.closing h2{font:400 52px/1.15 var(--serif);letter-spacing:-.035em;color:var(--strong);max-width:640px;margin:0 auto}.closing p{color:var(--muted);max-width:550px;margin:23px auto 28px;font-size:16px}footer.wrap{border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding-top:36px;padding-bottom:40px;gap:32px}.footer-brand{display:flex;align-items:baseline;gap:20px}.footer-brand strong{font:600 21px var(--serif);color:var(--strong)}.footer-brand span,.footer-links{font-size:13px;color:var(--muted)}.footer-links{display:flex;gap:25px;align-items:center}.footer-links button{padding:0}dialog{width:min(580px,calc(100% - 36px));padding:44px;border:1px solid var(--line);border-radius:9px;background:var(--paper);color:var(--ink);box-shadow:var(--shadow)}dialog::backdrop{background:#10182080;backdrop-filter:blur(5px)}dialog h2{font:30px/1.2 var(--serif);margin-bottom:20px;color:var(--strong)}dialog p{font-size:16px}.dialog-close{position:absolute;top:7px;right:12px;font-size:24px;padding:4px 8px}.skip{position:absolute;left:16px;top:16px;transform:translateY(-150%);z-index:2;background:var(--surface);padding:10px}.skip:focus{transform:none}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media(max-width:900px){.wrap{padding-left:30px;padding-right:30px}.hero{padding-top:55px}.hero-bottom{gap:36px;align-items:start;flex-direction:column}.app-showcase{gap:40px;padding:42px}.showcase-note h2{font-size:32px}.feature-list article{grid-template-columns:36px 1fr 110px;gap:16px}.feature-detail{max-width:100px;text-align:right}.footer-brand{flex-direction:column;gap:6px}}
@media(max-width:600px){.wrap{padding-left:23px;padding-right:23px}.site-header{min-height:90px}.site-header nav{gap:12px}.nav-about{display:none}.hero{padding-top:40px;padding-bottom:60px}h1{font-size:71px;margin:28px 0 30px}html[lang=zh-Hans] h1{font-size:clamp(39px,9.5vw,57px)}.eyebrow{font-size:12px}.intro{font-size:18px}.hero-actions{gap:12px}.app-showcase{display:flex;flex-direction:column;gap:40px;padding:35px 26px}.document-preview{max-width:240px;max-height:300px;overflow:hidden}.showcase-note h2{font-size:34px}.writing{padding-top:75px;padding-bottom:70px}.section-heading h2{font-size:38px;margin-bottom:34px}.feature-list article{grid-template-columns:25px 1fr;gap:15px;padding:27px 0}.feature-list h3{font-size:25px}.feature-detail,.feature-list kbd{display:none}.closing{padding-top:60px;padding-bottom:60px}.closing h2{font-size:39px}footer.wrap{align-items:start;flex-direction:column;gap:25px}.footer-brand{gap:7px}.footer-links{flex-wrap:wrap}.footer-brand span{font-size:12px}}