:root{--primary-color: #2EC4B6;--primary-hover: #25a094;--secondary-color: #FFFFFF;--accent-color: #FF6B6B;--text-main: #333333;--text-light: #666666;--text-white: #FFFFFF;--bg-main: #FFFFFF;--bg-light: #F7F9F9;--spacing-unit: 8px;--container-width: 1200px;--font-family: "Inter", "Noto Sans KR", system-ui, -apple-system, sans-serif;--transition-fast: .3s ease}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);color:var(--text-main);background-color:var(--bg-main);line-height:1.6;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;margin-bottom:1rem;word-break:keep-all}a{text-decoration:none;color:inherit;transition:opacity var(--transition-fast)}ul{list-style:none}img{max-width:100%;border-radius:8px;display:block}.container{max-width:var(--container-width);margin:0 auto;padding:0 20px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;background-color:var(--primary-color);color:var(--text-white);border-radius:50px;font-weight:600;transition:background-color var(--transition-fast),transform .2s;cursor:pointer;border:none;font-size:1rem}.btn:hover{background-color:var(--primary-hover);transform:translateY(-2px)}.btn-sm{padding:8px 16px;font-size:.9rem}.btn-lg{padding:16px 32px;font-size:1.1rem}.btn-white{background-color:#fff;color:var(--primary-color)}.btn-white:hover{background-color:#f0f0f0}.header{padding:20px 0;position:sticky;top:0;background-color:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:100;border-bottom:1px solid rgba(0,0,0,.05)}.header-container{display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.5rem;font-weight:800;color:var(--primary-color)}.nav a{margin-left:20px;font-weight:500;color:var(--text-main)}.nav a:hover{color:var(--primary-color)}.hero{padding:80px 0;background:linera-gradient(to bottom,#ffffff,var(--bg-light))}.hero-container{display:flex;align-items:center;gap:40px}.hero-content{flex:1}.hero h1{font-size:3rem;margin-bottom:20px;color:var(--text-main)}.hero p{font-size:1.1rem;color:var(--text-light);margin-bottom:30px}.hero-image{flex:1;display:flex;justify-content:center}.hero-image img{max-width:80%;height:auto}.placeholder-device{width:280px;height:560px;background:#f0f0f0;border-radius:40px;border:8px solid #333;position:relative;box-shadow:0 20px 40px #0000001a}.problem{padding:80px 0;background-color:#fff;text-align:center}.section-header{margin-bottom:50px;max-width:600px;margin-left:auto;margin-right:auto}.section-header h2{font-size:2.2rem;margin-bottom:15px}.problem-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px}.problem-card{padding:30px;background:var(--bg-light);border-radius:16px;transition:transform .3s}.problem-card:hover{transform:translateY(-5px)}.problem-card .icon{font-size:3rem;margin-bottom:20px}.problem-card h3{font-size:1.25rem;margin-bottom:10px}.features{padding:80px 0}.feature-row{display:flex;align-items:center;gap:60px;margin-bottom:100px}.feature-row.reverse{flex-direction:row-reverse}.feature-text{flex:1}.feature-text h3{font-size:2rem;color:var(--primary-color);margin-bottom:15px}.feature-sub{font-size:1.25rem;font-weight:600;margin-bottom:15px;color:var(--text-main)}.feature-img{flex:1;min-width:300px;background-color:transparent;border-radius:20px;display:flex;align-items:center;justify-content:center}.feature-img img{width:100%;height:auto;object-fit:contain}.feature-img img.small-img{width:80%;margin:0 auto;display:block}.text-accent{color:var(--accent-color);font-weight:700}.outro{padding:80px 0;background-color:var(--primary-color);color:#fff;text-align:center}.outro h2{margin-bottom:20px}.outro p{margin-bottom:40px;font-size:1.2rem;opacity:.9}.footer{padding:40px 0;text-align:center;background-color:#333;color:#888;font-size:.9rem}@media (max-width: 1024px){.hero-container,.feature-row,.feature-row.reverse{flex-direction:column;text-align:center}.feature-img{min-width:100%;max-width:600px;margin:0 auto}.hero h1{font-size:2.2rem}.nav{display:none}.nav .fade-in-section{opacity:0;transform:translateY(20px);transition:opacity .6s ease-out,transform .6s ease-out;will-change:opacity,transform}.nav .fade-in-section.visible{opacity:1;transform:translateY(0)}.nav .feature-row.reverse.fade-in-section{transform:translateY(20px)}.nav .feature-row.reverse.fade-in-section.visible{transform:translateY(0)}}