:root{--bg-color: #0a0a0a;--text-color: #e5e5e5;--primary-color: #3b82f6;--secondary-color: #8b5cf6;--accent-color: #10b981;--card-bg: rgba(255, 255, 255, .05);--card-border: rgba(255, 255, 255, .1);--nav-bg: rgba(10, 10, 10, .8);--font-main: "Inter", "Noto Sans JP", sans-serif}html,body{padding:0;margin:0;font-family:var(--font-main);background-color:var(--bg-color);color:var(--text-color);scroll-behavior:smooth;line-height:1.6}*{box-sizing:border-box}a{color:inherit;text-decoration:none;transition:color .3s ease}a:hover{color:var(--primary-color)}header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:var(--nav-bg);backdrop-filter:blur(10px);border-bottom:1px solid var(--card-border);padding:1rem 2rem}.nav-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.5rem;font-weight:700;background:linear-gradient(to right,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.05em}.nav-links{display:flex;gap:2rem;align-items:center}.nav-links a{font-weight:500;font-size:.95rem;color:#a3a3a3}.nav-links a:hover{color:#fff}.nav-cta{background:var(--primary-color);color:#fff!important;padding:.5rem 1.2rem;border-radius:9999px;font-weight:600!important;transition:opacity .3s ease,transform .2s ease!important}.nav-cta:hover{opacity:.9;transform:translateY(-1px)}.menu-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}.hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:0 2rem;background:radial-gradient(circle at 50% 50%,rgba(59,130,246,.1) 0%,transparent 50%)}.hero h1{font-size:4rem;font-weight:800;margin-bottom:1.5rem;line-height:1.1;background:linear-gradient(to bottom right,#fff,#a5a5a5);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero p{font-size:1.25rem;color:#a3a3a3;max-width:600px;margin:0 auto 2rem}.cta-button{display:inline-block;padding:1rem 2rem;background:var(--primary-color);color:#fff;border-radius:9999px;font-weight:600;transition:transform .2s ease,box-shadow .2s ease}.cta-button:hover{transform:translateY(-2px);box-shadow:0 10px 20px -10px #3b82f680;color:#fff}.section{padding:6rem 2rem;max-width:1200px;margin:0 auto;scroll-margin-top:80px}.section h2{font-size:2.5rem;font-weight:700;margin-bottom:3rem;text-align:center;position:relative;display:table;margin-left:auto;margin-right:auto}.section h2:after{content:"";position:absolute;bottom:-10px;left:0;width:100%;height:4px;background:linear-gradient(to right,var(--primary-color),var(--secondary-color));border-radius:2px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:1rem;padding:2rem;transition:transform .3s ease,border-color .3s ease}.card:hover{transform:translateY(-5px);border-color:var(--primary-color)}.card h3{font-size:1.5rem;margin-bottom:1rem;color:#fff}.card p{color:#a3a3a3;font-size:.95rem}.about-grid{display:grid;gap:2rem}.tech-list{display:flex;flex-wrap:wrap;gap:1rem;margin-top:1rem}.tech-tag{padding:.5rem 1rem;background:#ffffff1a;border-radius:.5rem;font-size:.875rem;color:#e5e5e5}.toggle-container{display:inline-flex;background:#ffffff0d;padding:.3rem;border-radius:.8rem;border:1px solid var(--card-border);margin-bottom:2rem}.toggle-button{padding:.6rem 1.5rem;border-radius:.6rem;border:none;background:transparent;color:#a3a3a3;font-weight:600;cursor:pointer;transition:all .3s ease;font-size:.9rem}.toggle-button.active{background:var(--primary-color);color:#fff;box-shadow:0 4px 12px #3b82f64d}.toggle-button:not(.active):hover{color:#fff;background:#ffffff0d}.footer{border-top:1px solid var(--card-border);padding:2rem;text-align:center;color:#737373;font-size:.875rem;margin-top:4rem}@media(max-width:768px){.hero h1{font-size:2.5rem}.menu-toggle{display:block}.nav-links{position:fixed;top:60px;left:0;width:100%;background:var(--bg-color);flex-direction:column;padding:2rem;gap:1.5rem;border-bottom:1px solid var(--card-border);transform:translateY(-150%);transition:transform .3s ease}.nav-links.open{transform:translateY(0)}}@media(min-width:769px){.about-grid{grid-template-columns:1fr 1fr;gap:4rem;align-items:center}}.tree-view{font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:.9rem;line-height:1.6;color:#a3a3a3;background:#111;padding:1.5rem;border-radius:.5rem;border:1px solid var(--card-border);overflow-x:auto}.tree-node{position:relative;padding-left:1.2rem}.tree-node:before{content:"";position:absolute;left:.4rem;top:0;bottom:0;width:1px;background:#ffffff1a}.tree-node:last-child:before{height:.8em}.tree-node:after{content:"";position:absolute;left:.4rem;top:.8em;width:.6rem;height:1px;background:#ffffff1a}.tree-content{display:flex;align-items:center;gap:.5rem}.tree-folder{color:var(--primary-color);font-weight:600}.tree-file{color:#e5e5e5}.tree-desc{color:#666;font-size:.85em;font-style:italic;margin-left:.5rem}.strength-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-top:3rem}.strength-card{text-align:center;padding:2.5rem}.strength-icon{font-size:3rem;margin-bottom:1.5rem;display:block}.workflow-container{max-width:900px;margin:3rem auto 0;position:relative}.workflow-step{display:flex;gap:2rem;margin-bottom:3rem;position:relative}.workflow-step:not(:last-child):before{content:"";position:absolute;left:20px;top:40px;bottom:-40px;width:2px;background:var(--card-border)}.step-number{min-width:40px;height:40px;background:var(--primary-color);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;z-index:1}.step-content h3{margin-top:0;color:#fff;font-size:1.25rem}.faq-container{max-width:800px;margin:3rem auto 0;text-align:left}.faq-item{background:var(--card-bg);border:1px solid var(--card-border);border-radius:.75rem;padding:1.5rem;margin-bottom:1rem}.faq-question{font-weight:700;color:#fff;margin-bottom:.5rem;display:flex;gap:.75rem}.faq-question:before{content:"Q.";color:var(--primary-color)}.faq-answer{color:#a3a3a3;line-height:1.6;display:flex;gap:.75rem}.faq-answer:before{content:"A.";color:var(--secondary-color);font-weight:700;flex-shrink:0}.text-gradient{background:linear-gradient(to right,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}