:root{--accent-red: #FF003E;--background: #FFFFFF;--container-gray: #F3F4F6;--text-primary: #1d1d1f;--text-secondary: #6e6e73;--border-color: rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,SF Pro Text,Helvetica Neue,Helvetica,Arial,Hiragino Kaku Gothic ProN,Hiragino Sans,Yu Gothic Medium,Meiryo,sans-serif;background-color:var(--background);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:1200px;margin:0 auto;padding:0 2rem}.nav{display:flex;justify-content:space-between;align-items:center;position:fixed;top:0;left:0;right:0;z-index:1000;background:#fff;backdrop-filter:blur(0px);-webkit-backdrop-filter:blur(0px);border-bottom:1px solid var(--border-color);padding:1rem 2rem;transition:background .3s ease,backdrop-filter .3s ease}.nav.scrolled{background:#ffffffb3;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.nav-logo{font-size:1.5rem;font-weight:600;color:var(--text-primary);text-decoration:none}.nav-menu{display:flex;list-style:none;gap:1.5rem;align-items:center}.nav-menu a{color:var(--text-primary);text-decoration:none;font-size:.95rem;transition:color .2s ease}.nav-menu a:hover,.nav-menu a.active{color:var(--accent-red)}.main{margin-top:5rem;padding:2rem 0 4rem}.mobile-language-select{display:none;margin-bottom:2rem}.mobile-language-select .btn-group{display:flex;justify-content:flex-end;gap:.5rem}.feature-section{background-color:var(--container-gray);border-radius:18px;padding:4rem 8rem;margin-bottom:2rem}.feature-section-header{margin-bottom:1.5rem}.feature-section-header h2{font-size:2.5rem;font-weight:600;letter-spacing:-.02em;margin-bottom:.5rem;color:var(--text-primary)}.feature-section-body{font-size:1.125rem;line-height:1.75;color:var(--text-primary)}.feature-section-body p{margin-bottom:1.5rem}.feature-section-body p:last-child{margin-bottom:0}.intro-section{background-color:transparent;padding:1rem 0;margin-top:0;margin-bottom:0}.intro-section .feature-section-body{font-size:1.25rem}.demo-item{display:flex;align-items:center;gap:8rem}#demo .feature-section:nth-of-type(2n) .demo-item{flex-direction:row-reverse}.demo-media{flex:1;max-width:50%;overflow:hidden;border-radius:60px;box-shadow:0 8px 24px #0000001f}.demo-media img,.demo-media video{width:100%;max-width:400px;height:auto;border-radius:60px;display:block;object-fit:cover}.demo-text{flex:1;max-width:50%}.demo-text h3{font-size:2rem;font-weight:600;letter-spacing:-.02em;margin-bottom:1rem;color:var(--text-primary)}.demo-text p{font-size:1.125rem;line-height:1.75;color:var(--text-primary);margin-bottom:0}.btn{display:inline-block;padding:.75rem 1.5rem;background-color:var(--accent-red);color:#fff;text-decoration:none;border-radius:980px;font-size:1rem;font-weight:500;transition:all .2s ease;border:none;cursor:pointer}.btn:hover{background-color:#e60038;transform:translateY(-1px);box-shadow:0 4px 12px #ff003e4d}.btn-ghost{background-color:transparent;color:var(--text-primary);border:1px solid var(--border-color)}.btn-ghost:hover{background-color:var(--container-gray);color:var(--text-primary);transform:none;box-shadow:none}.btn-group{display:flex;gap:.5rem}.problem-list{list-style:none;padding-left:0}.problem-list li{margin-bottom:1.5rem;padding-left:2rem;position:relative;font-size:1.125rem;line-height:1.75}.problem-list li:before{content:"❌ ";position:absolute;left:0;color:var(--accent-red);font-weight:700}.problem-list li strong{color:var(--text-primary)}.substack-embed{width:100%;max-width:480px;height:320px;margin:2rem auto;display:block;border:1px solid var(--border-color);border-radius:12px;background:#fff}.mobile-subscribe{display:none;text-align:left;margin:1rem 0}hr{border:none;border-top:1px solid var(--border-color);margin:3rem 0}blockquote{border-left:4px solid var(--accent-red);padding-left:1.5rem;margin:1.5rem 0;color:var(--text-secondary);font-style:italic}a{color:var(--accent-red);text-decoration:none;transition:color .2s ease}a:hover{color:#e60038;text-decoration:underline}@media(max-width:768px){.container{padding:0 1.5rem}.nav{padding:1rem 1.5rem}.nav-menu{display:none}.mobile-language-select{display:block}.main{margin-top:4rem;padding:2rem 0}.feature-section{padding:3rem 2rem;border-radius:12px}.feature-section-header h2{font-size:2rem}.intro-section .feature-section-body{font-size:1.125rem}.demo-item{flex-direction:column-reverse!important;gap:2rem;margin-bottom:3rem}#demo .feature-section:nth-of-type(2n) .demo-item{flex-direction:column-reverse!important}.demo-media,.demo-text{max-width:100%}.demo-text h3{font-size:1.75rem}.demo-text p{font-size:1rem}.substack-embed{display:none}.mobile-subscribe{display:block}}