/* About shares the homepage's neutral palette; visual styles stay local to this page. */
:root{color-scheme:dark;--about-bg:#101010;--about-panel:#1d1d1d;--about-raised:#282828;--about-line:#353535;--about-text:#f2f2f2;--about-muted:#a3a3a3;--about-soft:#858585;--about-accent:#ededed;--about-on-accent:#202020;--about-hover:#fff;--about-grid:#ffffff0c}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}
body.about-page{margin:0;background:var(--about-bg);color:var(--about-text);font:15px/1.75 Inter,"Microsoft YaHei UI","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
body.about-page[data-account-theme=light]{color-scheme:light;--about-bg:#f5f5f5;--about-panel:#fff;--about-raised:#eee;--about-line:#ddd;--about-text:#202024;--about-muted:#64646d;--about-soft:#717178;--about-accent:#25252b;--about-on-accent:#fff;--about-hover:#404048;--about-grid:#0000000b}
button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:2px solid var(--about-muted);outline-offset:5px}img{max-width:100%;display:block}svg{fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.about-container{width:min(100%,1240px);margin-inline:auto;padding-inline:40px}
.about-skip{position:fixed;top:-100px;left:20px;z-index:50;padding:10px 20px;background:var(--about-accent);color:var(--about-on-accent)}.about-skip:focus{top:12px}
.about-header{height:88px;max-width:1440px;margin:auto;padding-inline:48px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--about-line)}
.about-logo{display:inline-flex;align-items:center;flex-shrink:0}.about-logo img{object-fit:contain;filter:brightness(0) invert(1)}body[data-account-theme=light] .about-logo img{filter:brightness(.12)}
.about-header nav{display:flex;align-items:center;gap:28px}.about-home-link{color:var(--about-muted);font-size:13px}
.about-contact{display:flex;gap:8px;align-items:center;background:transparent;border:0;color:var(--about-muted);padding:8px 0;font-size:13px}.about-contact svg{width:18px;height:18px}
.about-button{display:inline-flex;align-items:center;justify-content:center;gap:32px;min-height:50px;padding:12px 24px;border:1px solid transparent;border-radius:10px;background:var(--about-accent);color:var(--about-on-accent);font-size:14px;font-weight:600;transition:background .16s}
.about-button:hover{background:var(--about-hover)}.about-button span{font-size:20px;line-height:1}.about-button-small{min-height:40px;padding:8px 17px;gap:18px;font-size:12px;border-radius:8px}
.about-hero{display:grid;grid-template-columns:1fr 1fr;gap:64px;padding-block:84px;align-items:center}
.about-eyebrow{margin:0 0 20px;font-size:11px;font-weight:500;letter-spacing:.12em;color:var(--about-muted)}.about-hero .about-eyebrow{display:flex;align-items:center;gap:9px}.about-eyebrow>span{width:5px;height:5px;background:var(--about-muted);border-radius:50%}
.about-hero h1{margin:0 0 24px;font-size:clamp(36px,3.3vw,48px);line-height:1.4;font-weight:600;letter-spacing:-.04em}.about-period{color:inherit}
.about-lead{font-size:15px;line-height:2;color:var(--about-muted);margin:0}.about-hero-actions{display:flex;align-items:center;gap:28px;margin-top:32px}
.about-text-link{display:inline-flex;align-items:center;justify-content:center;gap:12px;font:inherit;font-size:13px;color:var(--about-muted);border:0;background:none;padding:8px 0}.about-text-link:hover,.about-home-link:hover,.about-contact:hover{color:var(--about-text)}
.about-hero-note{margin:20px 0 0;font-size:12px;color:var(--about-soft)}
.about-preview{margin:0;min-width:0;border:1px solid var(--about-line);border-radius:16px;background:var(--about-panel);overflow:hidden}
.about-preview-bar{display:flex;gap:14px;align-items:center;height:48px;padding-inline:20px;font-size:11px;color:var(--about-muted);border-bottom:1px solid var(--about-line)}
.about-preview-dots{display:flex;gap:5px}.about-preview-dots i{width:5px;height:5px;border-radius:50%;background:var(--about-soft)}.about-preview-brand{margin-left:auto;font-size:10px}
.about-hero-art{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;object-position:65% center;background:#111}
.about-preview-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));padding:20px 16px;border-top:1px solid var(--about-line)}.about-preview-steps>span{display:flex;align-items:center;justify-content:center;gap:10px;font-size:12px;white-space:nowrap}.about-preview-steps>span+span{border-left:1px solid var(--about-line)}.about-preview-steps i{font-style:normal;font-size:10px;color:var(--about-soft)}
.about-section-heading{margin-bottom:28px}.about-section-heading .about-eyebrow{margin-bottom:10px}.about-section-heading h2{margin:0;font-size:28px;font-weight:600;line-height:1.5;letter-spacing:-.025em}
.about-advantage-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.about-advantage{display:grid;grid-template-rows:auto 72px auto 1fr;row-gap:16px;padding:26px 24px;background:var(--about-panel);border:1px solid var(--about-line);border-radius:14px;min-width:0}
.about-card-number{display:block;font-size:11px;color:var(--about-muted)}.about-feature-symbol{display:flex;align-items:center;height:72px;color:var(--about-text)}.about-feature-symbol svg{width:34px;height:34px;stroke-width:1.3}.about-infinity{font-family:Georgia,serif;font-size:60px;line-height:1}
.about-advantage h3{margin:0;font-size:18px;font-weight:600;line-height:1.5}.about-advantage>p:last-child{margin:0;color:var(--about-muted);font-size:13px;line-height:1.85}
.about-price-value{gap:5px;align-items:baseline;padding-top:10px;white-space:nowrap}.about-price-value strong{font-size:40px;font-weight:600;line-height:1.4;letter-spacing:-.05em}.about-price-value span{font-size:11px;color:var(--about-muted)}
.about-pricing-note{margin:16px 0 0;font-size:11px;line-height:1.8;color:var(--about-soft)}
.about-capabilities{padding-top:88px;scroll-margin-top:32px}.about-heading-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}.about-heading-row>p{margin:0;color:var(--about-muted);font-size:13px;line-height:1.8}
.about-capability-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.about-capability{min-width:0}
.about-feature-art{position:relative;height:208px;margin-bottom:24px;background:var(--about-panel);border:1px solid var(--about-line);border-radius:13px;overflow:hidden}
.about-art-label{position:absolute;bottom:15px;left:0;width:100%;font-size:10px;color:var(--about-soft);text-align:center;letter-spacing:.06em}
.about-bubble{position:absolute;top:26px;right:22px;background:var(--about-raised);border:1px solid var(--about-line);border-radius:10px;padding:9px 14px;font-size:11px;color:var(--about-text)}
.about-bubble-answer{left:22px;right:22px;top:82px;padding:13px 14px 13px 38px;background:var(--about-bg);line-height:1.8}.about-bubble-answer i{position:absolute;top:14px;left:15px;font-style:normal;font-size:15px}
.about-canvas-art{background-image:radial-gradient(var(--about-grid) .8px,transparent .8px);background-size:12px 12px}
.about-art-node{position:absolute;left:7%;top:28px;z-index:1;padding:11px 13px;border:1px solid var(--about-line);border-radius:7px;background:var(--about-raised);color:var(--about-text);font-size:11px}.about-art-node-main{top:78px;left:36%;background:var(--about-accent);color:var(--about-on-accent)}.about-art-node-end{top:127px;left:60%;padding:9px 12px}
.about-art-wire{position:absolute;left:26%;top:48px;width:24%;height:50px;border-bottom:1px solid var(--about-soft);border-left:1px solid var(--about-soft);border-radius:0 0 0 15px}.about-art-wire-next{left:53%;top:100px;width:22%;height:47px}
.about-mini-folder{position:absolute;width:174px;height:106px;top:50px;left:50%;transform:translateX(-50%);display:flex;align-items:center;justify-content:center;gap:9px;border-radius:10px;background:var(--about-raised);border:1px solid var(--about-line)}
.about-mini-folder>span{position:absolute;left:-1px;top:-12px;width:70px;height:15px;border:1px solid var(--about-line);border-bottom:0;background:var(--about-raised);border-radius:8px 9px 0 0}.about-mini-folder>i{display:grid;place-items:center;width:40px;height:55px;font:24px Georgia,serif;background:var(--about-bg);color:var(--about-text);border:1px solid var(--about-line);border-radius:4px}
.about-detail-number{font-size:11px;letter-spacing:.1em;color:var(--about-soft)}.about-capability h3{margin:6px 0 12px;font-size:21px;font-weight:600;line-height:1.5}.about-capability>p{margin:0;color:var(--about-muted);font-size:14px;line-height:1.9}.about-capability>a{display:inline-flex;gap:24px;align-items:center;margin-top:20px;font-size:13px}.about-capability>a:hover{text-decoration:underline;text-underline-offset:4px}
.about-belief{position:relative;margin-top:88px;padding-block:68px;text-align:center;border-block:1px solid var(--about-line)}.about-belief-mark{display:none}.about-belief .about-eyebrow{margin-bottom:16px}.about-belief h2{margin:0 0 20px;font-size:32px;font-weight:500;line-height:1.5}.about-belief>p:last-child{margin:0;color:var(--about-muted);font-size:14px;line-height:1.9}
.about-cta{display:flex;align-items:center;justify-content:space-between;gap:32px;padding-block:64px}.about-cta .about-eyebrow{margin-bottom:10px}.about-cta h2{font-size:28px;font-weight:600;line-height:1.5;margin:0}.about-cta>div:last-child{display:flex;flex-direction:column;align-items:center;gap:8px}
.about-footer{display:flex;align-items:center;gap:24px;border-top:1px solid var(--about-line);padding-block:28px}.about-footer>span{font-size:12px;color:var(--about-muted)}.about-footer nav{margin-left:auto;display:flex;gap:24px;align-items:center}.about-footer nav a,.about-footer nav button{font-size:12px;color:var(--about-muted)}.about-footer nav button{background:none;border:0;padding:0}.about-footer nav a:hover,.about-footer nav button:hover{color:var(--about-text)}
@media(max-width:1080px){.about-container{padding-inline:32px}.about-header{padding-inline:32px}.about-hero{gap:36px;padding-block:64px}.about-hero h1{font-size:38px}.about-advantage-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.about-capability-grid{gap:20px}.about-feature-art{height:208px}.about-capability h3{font-size:19px}.about-heading-row>p{font-size:12px}.about-preview-steps{padding-inline:8px}.about-preview-steps>span{font-size:11px;gap:6px}}
@media(max-width:760px){.about-container{padding-inline:24px}.about-header{height:72px;padding-inline:24px}.about-header .about-logo img{width:96px;height:30px}.about-header nav{gap:16px}.about-home-link{display:none}.about-contact{font-size:12px}.about-button-small{min-height:36px;padding:6px 12px;gap:10px}.about-hero{grid-template-columns:1fr;gap:40px;padding-block:48px 56px}.about-hero h1{font-size:36px}.about-lead{font-size:14px}.about-hero-actions{gap:22px;margin-top:24px}.about-button{min-height:46px;padding:10px 20px;gap:24px}.about-header .about-button{min-height:36px;padding:6px 12px;gap:10px}.about-preview{width:100%;max-width:560px;justify-self:center}.about-hero-art{aspect-ratio:16/9}.about-preview-bar{height:44px;padding-inline:16px}.about-preview-steps{padding-block:16px}.about-section-heading h2{font-size:24px}.about-advantage-grid{gap:12px}.about-advantage{padding:20px 16px;row-gap:12px;grid-template-rows:auto 60px auto 1fr}.about-feature-symbol{height:60px}.about-advantage h3{font-size:17px}.about-advantage>p:last-child{font-size:12px}.about-card-number{font-size:10px}.about-price-value{gap:3px;padding-top:6px}.about-price-value strong{font-size:35px}.about-price-value span{font-size:10px}.about-heading-row{display:block}.about-heading-row>p{margin-top:14px}.about-capabilities{padding-top:56px}.about-capability-grid{grid-template-columns:1fr;gap:36px}.about-feature-art{height:208px;margin-bottom:20px}.about-capability h3{font-size:21px}.about-belief{margin-top:56px;padding-block:48px}.about-belief h2{font-size:28px}.about-belief>p:last-child{font-size:13px}.about-cta{padding-block:48px;flex-direction:column;text-align:center;gap:24px}.about-cta h2{font-size:24px}.about-cta>div:last-child{flex-direction:row;gap:20px}.about-footer{flex-wrap:wrap;gap:16px;padding-block:24px}.about-footer>span{margin-left:auto;font-size:11px}.about-footer nav{width:100%;margin:0;justify-content:space-between;gap:12px}}
@media(max-width:370px){.about-container{padding-inline:20px}.about-header{padding-inline:16px}.about-header nav{gap:12px}.about-contact svg{display:none}.about-hero h1{font-size:30px}.about-advantage-grid{grid-template-columns:1fr}.about-advantage{padding:24px}.about-hero-actions{gap:18px}.about-button{padding-inline:18px;gap:20px}.about-preview-steps>span{font-size:10px;gap:5px}.about-preview-dots{display:none}.about-cta>div:last-child{gap:16px}.about-footer>span{font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.about-button{transition:none}}