.home-wrapper{--bg-primary: #000000;--bg-secondary: #000000;--bg-card: #000000;--text-primary: #ededed;--text-secondary: #c8c8c8;--text-muted: #52525b;--accent-1: #5468ff;--accent-2: #8b5cf6;--accent-3: #ec4899;--gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);--gradient-text: linear-gradient(135deg, #5468ff 0%, #6b7dff 50%, #8291ff 100%);--border-color: rgba(255, 255, 255, .15);--card-border-color: rgba(255, 255, 255, .1);--card-inner-bg: rgba(54, 54, 54, .25);--card-inner-border: rgba(255, 255, 255, .1);--nav-bar-color: rgba(123, 123, 123, .6);--nav-open-text-color: rgba(141, 141, 141, .8);--nav-hover-color: rgba(223, 223, 223, .8);--scrim-bg: rgba(10, 10, 14, .28);--container-overlay: linear-gradient(90deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, .4) 5%, rgba(0, 0, 0, .95) 20%, rgba(0, 0, 0, .95) 80%, rgba(0, 0, 0, .4) 95%, rgba(0, 0, 0, 0) 100%);--nav-open-canvas-brightness: .75;--tag-bg: rgba(255, 255, 255, .03);--container: 1200px;--radius: 16px;--transition: all .3s cubic-bezier(.4, 0, .2, 1);--card-border-width: 1px;--sidebar-open-width: 290px;--sidebar-min-center-gap: 48px;--sidebar-min-right-edge: 12px;--sidebar-base-right: clamp(10px, 20vw, 350px)}html{scroll-behavior:smooth}*{margin:0;padding:0;box-sizing:border-box}.home-wrapper{font-family:Inter,system-ui,-apple-system,sans-serif;color:var(--text-secondary);background-color:var(--bg-primary);line-height:1.6;font-size:16px;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;position:relative}.sidebar{position:fixed;top:0;right:min(var(--sidebar-base-right),max(var(--sidebar-min-right-edge),calc(42vw - var(--sidebar-open-width) - var(--sidebar-min-center-gap))));height:100vh;width:86px;padding:100px 32px 32px;z-index:1000;transition:width .12s ease}.sidebar.is-open{width:290px}.side-inner{display:flex;flex-direction:column;align-items:flex-end;gap:0px;position:relative;z-index:1}.side-item{display:flex;flex-direction:row-reverse;align-items:center;gap:30px;position:relative;transition:color .12s ease,min-height .12s ease;min-height:25px;white-space:nowrap;color:var(--text-primary)}.sidebar.is-open .side-item{min-height:36px;width:100%}.side-bar{width:25px;height:1px;flex-shrink:0;background:var(--nav-bar-color);transition:background-color .12s ease,width .12s ease,height .12s ease}.sidebar.is-open .side-bar{width:35px;height:1.3px}.side-text{font-size:18px;letter-spacing:.01em;opacity:0;color:var(--text-secondary);position:absolute;right:85px;margin-right:0;pointer-events:none;transition:opacity .12s ease}.sidebar.is-open .side-text{opacity:1;pointer-events:auto;color:var(--nav-open-text-color)}.side-item:hover .side-bar{background:var(--nav-hover-color);width:40px}.side-item:hover .side-text{color:var(--nav-hover-color)}.side-item.active .side-bar{background:var(--accent-1);width:45px}.side-item.active .side-text{color:var(--accent-1)}.blur-scrim{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--scrim-bg);backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(3px);opacity:0;pointer-events:none;z-index:900;transition:opacity .5s ease}.home-wrapper.nav-open .blur-scrim{opacity:1}.home-wrapper.nav-open .bg-canvas{z-index:901;-webkit-mask-image:linear-gradient(90deg,black 0%,rgba(0,0,0,.6) 5%,rgba(0,0,0,.05) 20%,rgba(0,0,0,.05) 80%,rgba(0,0,0,.6) 95%,black 100%);mask-image:linear-gradient(90deg,#000,#0009 5%,#0000000d 20%,#0000000d 80%,#0009 95%,#000);filter:brightness(var(--nav-open-canvas-brightness))}.home-container{max-width:720px;margin:0 auto;padding:80px 24px 120px;position:relative}.home-container:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:100vw;height:100%;background:var(--container-overlay);pointer-events:none;z-index:0}.bg-canvas{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none}.home-container>*{position:relative;z-index:1}.page-title{font-size:40px;font-weight:700;margin-bottom:-5px;color:var(--text-primary)}.home-wrapper .subtitle{font-size:16px;color:var(--text-muted);margin-bottom:50px}.section{margin-bottom:48px;scroll-margin-top:20px}.home-wrapper h2{font-size:24px;font-weight:600;margin-bottom:16px;color:var(--text-primary);display:flex;align-items:center;gap:8px}.home-wrapper p{font-size:16px;color:var(--text-secondary);margin-bottom:12px}.intro-typewriter{white-space:pre-line;margin-bottom:0}.home-wrapper strong{color:var(--text-primary);font-weight:600}.home-wrapper a{color:inherit;text-decoration:none;transition:var(--transition)}.card{padding:20px;border-radius:0;margin-bottom:0;background:var(--bg-card);border:var(--card-border-width) solid var(--card-border-color);transition:var(--transition);position:relative;isolation:isolate}.card:before{content:"";position:absolute;top:3.5px;right:3.5px;bottom:3.5px;left:3.5px;border-radius:10px;background:var(--card-inner-bg);border:1px solid var(--card-inner-border);pointer-events:none;z-index:0}.card>*{position:relative;z-index:1}.card:not(:last-child){margin-bottom:24px}.card:not(:last-child):after{content:"";position:absolute;bottom:-25px;left:calc(-1 * var(--card-border-width));width:calc(100% + 2 * var(--card-border-width));height:24px;border-left:var(--card-border-width) solid var(--card-border-color);border-right:var(--card-border-width) solid var(--card-border-color);background:repeating-linear-gradient(90deg,transparent,transparent 10px,var(--card-border-color) 10px,var(--card-border-color) 11px);opacity:.7;box-sizing:border-box;background-clip:content-box;padding-right:1px}.card-logo{width:15%;border-radius:12px;margin-bottom:12px;border:1px solid var(--border-color)}.card:hover:before{border-color:#5468ffbf}.card-title{font-weight:600;margin-bottom:0;color:var(--text-primary)}.card-meta{font-size:14px;color:var(--text-muted);margin-bottom:9px}.card-desc{font-size:15px;line-height:1.54;color:var(--text-secondary);margin-bottom:0}.tags-row{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:12px;flex-wrap:wrap}.tags{display:flex;flex-wrap:wrap;gap:8px;flex:1}.tag{font-size:13px;padding:4px 10px;background:var(--tag-bg);border-radius:6px;color:var(--accent-1);border:1px solid var(--border-color)}@media(prefers-color-scheme:light){.home-wrapper{color-scheme:light;--bg-primary: #fcfcfd;--bg-secondary: #f7f8fb;--bg-card: #ffffff;--text-primary: #0f172a;--text-secondary: #334155;--text-muted: #64748b;--accent-1: #4f46e5;--accent-2: #7c3aed;--accent-3: #db2777;--gradient-1: linear-gradient(135deg, #93c5fd 0%, #c4b5fd 100%);--gradient-2: linear-gradient(135deg, #fbcfe8 0%, #fecaca 100%);--gradient-text: linear-gradient(135deg, #4338ca 0%, #4f46e5 50%, #6366f1 100%);--border-color: rgba(15, 23, 42, .14);--card-border-color: rgba(15, 23, 42, .12);--card-inner-bg: rgba(255, 255, 255, .74);--card-inner-border: rgba(15, 23, 42, .09);--nav-bar-color: rgba(100, 116, 139, .6);--nav-open-text-color: rgba(71, 85, 105, .82);--nav-hover-color: rgba(30, 41, 59, .82);--scrim-bg: rgba(255, 255, 255, .45);--container-overlay: linear-gradient(90deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, .58) 5%, rgba(255, 255, 255, .97) 20%, rgba(255, 255, 255, .97) 80%, rgba(255, 255, 255, .58) 95%, rgba(255, 255, 255, 0) 100%);--nav-open-canvas-brightness: 1.08;--tag-bg: rgba(15, 23, 42, .03)}}.home-wrapper .card-button{display:inline-flex;align-items:center;justify-content:center;padding:3px 10px;background:var(--accent-1);opacity:.8;color:#fff;border-radius:6px;font-size:14px;font-weight:450;border:.5px solid transparent;transition:var(--transition);text-decoration:none;white-space:nowrap;height:fit-content}.card-button:hover{filter:saturate(1.05) brightness(1.02);background:var(--bg-card);opacity:1;color:var(--accent-1);border-color:var(--accent-1)}.card-button:focus-visible{outline:3px solid rgba(84,104,255,.25);outline-offset:3px}.links{display:flex;flex-wrap:wrap;gap:16px;margin-top:16px}.link-button{padding:8px 15px;border-radius:1px;border:.5px solid var(--border-color);background:var(--bg-card);font-size:15px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;color:var(--text-primary);font-weight:400;letter-spacing:.02em}.link-button:hover{transform:scale(1.02);background:var(--accent-1);color:#fff;border-color:var(--accent-1)}.divider{height:1px;background:var(--border-color);width:70%;margin:48px auto}@media(max-width:900px){.home-wrapper{--sidebar-open-width: 240px;--sidebar-min-center-gap: 32px;--sidebar-base-right: clamp(10px, 14vw, 120px)}.sidebar{padding:68px 10px 24px;width:72px}.sidebar.is-open{width:240px}.side-bar,.sidebar.is-open .side-bar{width:45px}.side-text{font-size:16px}.home-wrapper.nav-open .blur-scrim{opacity:.85}.home-container{padding:64px 20px 80px}}@media(max-width:910px){.sidebar,.blur-scrim{display:none}.page-title{font-size:32px}h2{font-size:20px}}.footer{margin-top:60px;text-align:center;padding-bottom:40px}.footer p{font-size:14px;color:var(--text-muted);margin-bottom:0}.footer a{color:var(--text-secondary);text-decoration:underline;text-underline-offset:3px;transition:var(--transition)}.footer a:hover{color:var(--accent-1);text-decoration-color:var(--accent-1)}.footer-icon{width:25px;height:25px;margin-top:16px;border-radius:4px;opacity:.8;transition:var(--transition)}.footer-icon:hover{opacity:1;border-radius:2px;transform:scale(1.5)}.app-wrapper{--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--color-bg: #ffffff;--color-bg-alt: #f8fafc;--color-text: #0f172a;--color-text-light: #64748b;--color-primary: #10b981;--color-primary-dark: #059669;--color-border: #e2e8f0;--radius-lg: 24px;--radius-md: 16px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .05), 0 2px 4px -1px rgba(0, 0, 0, .03);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .05), 0 4px 6px -2px rgba(0, 0, 0, .025);--container-width: 900px}.app-wrapper *{box-sizing:border-box;margin:0;padding:0}.app-wrapper{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}.app-wrapper .container{max-width:var(--container-width);margin:0 auto;padding:0 24px}.app-wrapper a{text-decoration:none;color:inherit;transition:all .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.navbar{padding:24px 0;margin-bottom:40px}.nav-content{display:flex;justify-content:space-between;align-items:center}.brand{display:flex;align-items:center;gap:12px}.nav-title{font-weight:700;font-size:1.25rem;letter-spacing:-.02em}.back-link{font-size:.9rem;color:var(--color-text-light);font-weight:500}.back-link:hover{color:var(--color-primary)}.qr-float-card{position:fixed;bottom:22px;right:22px;background:#fff;padding:13px;border-radius:10px;box-shadow:0 10px 25px -5px #0000001a,0 8px 10px -6px #0000001a;display:flex;flex-direction:column;align-items:center;gap:11px;z-index:100;border:1px solid var(--color-border);width:144px;transition:transform .45s ease,opacity .35s ease}.qr-float-card-hidden{transform:translateY(180px);opacity:0;pointer-events:none}.qr-link-overlay{position:absolute;top:0;left:0;width:100%;height:100%;border-radius:10px;z-index:10;cursor:pointer}.qr-code-img{width:100%;height:auto;display:block;border-radius:12px}.qr-content{width:100%}.qr-store-badge-img{width:126px;height:auto;display:block}.qr-footer-row{display:flex;justify-content:center;align-items:center;width:100%}.hero{text-align:center;padding:40px 0 80px;max-width:700px;margin:0 auto}.app-icon{width:120px;height:120px;border-radius:28px;margin-bottom:32px;box-shadow:var(--shadow-lg);background:#fff}.hero-title{font-size:3.5rem;font-weight:700;line-height:1.1;margin-bottom:24px;letter-spacing:-.03em;background:linear-gradient(135deg,#0f172a,#334155);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero-subtitle{font-size:1.25rem;color:var(--color-text-light);margin-bottom:40px;line-height:1.6}.cta-group{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:50px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 28px;border-radius:100px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .2s ease}.btn:active{transform:scale(.95)}.btn-primary{background-color:#000;color:#fff;box-shadow:0 4px 6px #0f172a1a;position:relative;overflow:hidden}.btn-primary:hover{color:linear-gradient(135deg,#059669 0%,#10b981 50%,#34d399 100%);box-shadow:0 4px 10px #02130e47;transform:translateY(-2px)}.btn-primary:after{content:"文";position:absolute;right:10px;bottom:-18px;transform:rotate(20deg) translate(94px,24px) scale(.8);opacity:0;font-size:60px;font-family:system-ui,sans-serif;font-weight:700;color:#10b98133;transition:all .5s cubic-bezier(.34,1.56,.64,1);pointer-events:none}.btn-primary:hover:after{opacity:1;transform:rotate(0) translate(0) scale(1)}.btn-secondary{background-color:#fff;color:var(--color-text);border:1px solid var(--color-border)}.cta-group .btn-secondary{color:var(--color-text)}.btn-secondary:hover{background-color:#f8fafc;border-color:#cbd5e1}.stats-grid{display:flex;justify-content:center;gap:90px;width:100%}.stat-card{background:#fff;padding:24px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;transition:all .3s cubic-bezier(.34,1.56,.64,1);position:relative;border-radius:var(--radius-md)}.stat-value{font-size:2.25rem;font-weight:800;margin-bottom:8px;background:linear-gradient(135deg,#0f172a,#334155);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1.1;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.stat-label{font-size:.95rem;color:var(--color-text-light);line-height:1.4;font-weight:400;white-space:nowrap}.content-section{padding:100px 0;position:relative}.content-section:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:min(500px,calc(100% - 48px));height:1px;background-color:var(--color-border)}.bento-section:before{display:none}.bento-section{width:calc(100% + 120px);margin-left:-60px;margin-right:-60px}.alternate-bg{background-color:var(--color-bg-alt)}.section-header{text-align:center;margin-bottom:60px}.section-header h2{font-size:2.25rem;font-weight:800;letter-spacing:-.02em}.bento-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:20px;grid-auto-flow:dense;gap:20px}.bento-card{background:#fff;border-radius:var(--radius-md);border:1px solid var(--color-border);padding:32px;position:relative;overflow:hidden;transition:all .3s ease;display:flex;flex-direction:column}.card-wide{grid-column:span 2;grid-row:span 8}.card-offline{grid-row:span 6}.card-ai{min-height:0;grid-row:span 6}.card-compact{grid-column:span 1;grid-row:span 6;padding:24px}.card-tall{grid-column:span 1;grid-row:span 15}@media(min-width:769px){.card-offline{grid-column:1 / span 2}.card-handwriting{grid-column:1}.card-hsk{grid-column:2}.card-ai{grid-column:1 / span 2}.lockscreen-bento{grid-column:3;grid-row:1 / span 18}}.card-text-only .bento-card-content{max-width:100%}.bento-card h3{font-size:1.5rem;font-weight:700;margin-bottom:12px;letter-spacing:-.02em}.bento-card p{color:var(--color-text-light);font-size:1rem;line-height:1.5;max-width:80%;position:relative;z-index:2}.card-ai p,.card-compact:has(.hsk-image) p{max-width:65%}.card-handwriting p,.card-offline p{max-width:100%}.card-stacked p{max-width:100%!important}.bento-card-image-bottom{display:flex;justify-content:center;align-items:flex-end;flex:1;width:calc(100% + 64px);margin:24px -32px -32px;overflow:hidden}.bento-card-visual{position:absolute;bottom:0;right:0;font-size:4rem;transition:all .3s ease;pointer-events:none;z-index:1}.bento-image{width:auto;object-fit:contain;display:block;filter:drop-shadow(0 10px 15px rgba(0,0,0,.05))}.ai-image{height:130px;transform:translateY(-30px) translate(30px)}.hsk-image{height:90px;transform:translateY(-30px) translate(-10px);filter:none}.lockscreen-image{width:100%;height:auto;object-fit:contain;box-shadow:var(--shadow-md);transform:translateY(0)}.lockscreen-bento{min-height:504px}.bento-title{font-size:2.5rem!important;font-weight:800;text-align:center;margin-bottom:10px}.feature-block{display:flex;align-items:center;gap:30px}.feature-text{flex:1}.feature-text h2{font-size:2rem;font-weight:700;margin-bottom:24px}.feature-text p{color:var(--color-text-light);margin-bottom:20px;font-size:1.05rem}.feature-image-wrapper{flex:0 0 300px;display:flex;flex-direction:column;align-items:center}.feature-image{width:100%;max-width:150px;height:auto;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);margin-bottom:16px;transition:transform .3s ease;transform:rotate(-2deg)}.feature-image:hover{transform:rotate(0) scale(1.05)}.image-caption{font-size:.875rem;color:var(--color-text-light);font-style:italic;text-align:center;max-width:200px}.download-section{padding-top:80px}.download-section-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:36px;display:flex;align-items:center;justify-content:space-between;gap:32px}.download-copy{max-width:440px}.download-copy h2{font-size:2rem;font-weight:700;margin-bottom:14px}.download-copy p{color:var(--color-text-light);font-size:1rem;margin-bottom:22px}.download-copy .btn-primary,.download-copy .btn-primary:hover,.download-copy .btn-primary:active,.download-copy .btn-primary:visited{color:#fff!important}.download-qr-panel{display:flex;flex-direction:column;align-items:center;flex-shrink:0;gap:12px}.download-qr-image{width:220px;height:auto;border-radius:0;background:#fff;box-shadow:none}.download-store-badge{width:170px;height:auto}.footer{padding:40px 0;margin-top:40px;position:relative}.footer:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:min(800px,calc(100% - 48px));height:1px;background-color:var(--color-border)}.footer-content{display:flex;justify-content:space-between;align-items:center;color:var(--color-text-light);font-size:.9rem}.social-links{display:flex;gap:24px}.social-links a:hover{color:var(--color-primary)}@media(max-width:768px){.qr-float-card,.card-ai{display:none}.bento-grid{grid-template-columns:1fr;grid-auto-rows:auto}.bento-section{width:100%;margin-left:0;margin-right:0}.card-wide,.card-compact,.card-tall{grid-column:span 1;grid-row:span 1}.lockscreen-bento{min-height:auto}.bento-card p{max-width:100%}.hero-title{font-size:2.75rem}.feature-block{flex-direction:column-reverse;gap:40px;text-align:center}.feature-image-wrapper{flex:auto;width:100%;max-width:180px}.download-section-card{flex-direction:column-reverse;text-align:center;padding:28px}.download-copy{max-width:100%}.download-qr-image{display:none}.footer-content{flex-direction:column;gap:24px;text-align:center}.stats-grid{flex-direction:column;gap:20px;max-width:400px;margin:0 auto}}.cta-group .btn-primary{color:#fff!important}.cta-group .btn-secondary{color:var(--color-text)!important}