:root{--font-main: "Inter", "Noto Sans JP", sans-serif;--color-bg: #050507;--color-bg-alt: #0a0a0f;--color-primary: #00f3ff;--color-primary-dim: #00bcd4;--color-accent: #ff0055;--color-text-main: #ffffff;--color-text-muted: #94a3b8;--color-border: rgba(255, 255, 255, .1);--color-card-bg: rgba(20, 20, 30, .6);--container-width: 1280px;--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 2rem;--spacing-lg: 5rem;--spacing-xl: 10rem;--radius-sm: 8px;--radius-md: 20px;--radius-lg: 32px;--backdrop-blur: blur(20px);--shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, .5);--shadow-glow: 0 0 30px rgba(0, 243, 255, .15);--shadow-card: 0 20px 40px -10px rgba(0, 0, 0, .5);--border-glow: 1px solid rgba(0, 243, 255, .3)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--color-bg);color:var(--color-text-main);line-height:1.6;overflow-x:hidden;position:relative}body:before{content:"";position:fixed;top:-20%;left:-10%;width:60%;height:60%;background:radial-gradient(circle,rgba(0,243,255,.1) 0%,transparent 60%);filter:blur(100px);z-index:-1;pointer-events:none}body:after{content:"";position:fixed;bottom:-20%;right:-10%;width:60%;height:60%;background:radial-gradient(circle,rgba(255,0,85,.08) 0%,transparent 60%);filter:blur(100px);z-index:-1;pointer-events:none}.container{width:90%;max-width:var(--container-width);margin:0 auto}a{text-decoration:none;color:inherit;transition:all .3s ease}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseGlow{0%{box-shadow:0 0 10px #00f3ff33}50%{box-shadow:0 0 25px #00f3ff80}to{box-shadow:0 0 10px #00f3ff33}}.animate-in{opacity:0;animation:fadeInUp .8s cubic-bezier(.16,1,.3,1) forwards}.delay-100{animation-delay:.1s}.delay-200{animation-delay:.2s}.delay-300{animation-delay:.3s}.btn{display:inline-flex;align-items:center;justify-content:center;padding:1rem 2.5rem;font-weight:700;font-size:1rem;border-radius:50px;letter-spacing:.05em;text-transform:uppercase;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden}.btn-primary{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dim) 100%);color:#000;border:none}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px #00f3ff66}.btn-primary:after{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:#ffffff4d;transform:translate(-100%);transition:transform .4s ease}.btn-primary:hover:after{transform:translate(100%)}.btn-secondary{background:transparent;border:1px solid var(--color-border);color:var(--color-text-main);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.btn-secondary:hover{border-color:var(--color-primary);color:var(--color-primary);background:#00f3ff0d}.site-header{padding:1.5rem 0;position:fixed;top:0;width:100%;z-index:100;background:#050507b3;-webkit-backdrop-filter:var(--backdrop-blur);backdrop-filter:var(--backdrop-blur);border-bottom:1px solid rgba(255,255,255,.05);transition:background .3s ease}.logo{font-size:1.25rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--color-text-main)}.logo span{color:var(--color-primary)}main{padding-top:80px}.hero{min-height:80vh;display:flex;align-items:center;justify-content:center;text-align:center;position:relative}.hero-title{font-size:clamp(3rem,7vw,6rem);line-height:1;font-weight:900;margin-bottom:var(--spacing-md);letter-spacing:-.03em;background:linear-gradient(180deg,#fff 20%,#94a3b8);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-subtitle{font-size:1.2rem;color:var(--color-primary);text-transform:uppercase;letter-spacing:.2em;font-weight:600;margin-bottom:var(--spacing-sm);display:block}.hero p{font-size:1.1rem;color:var(--color-text-muted);max-width:600px;margin:0 auto var(--spacing-lg)}.section{padding:var(--spacing-lg) 0}.section-title{font-size:2.5rem;font-weight:800;text-align:center;margin:0 auto var(--spacing-lg);position:relative;width:100%}.section-title:after{content:"";display:block;width:60px;height:4px;background:var(--color-primary);margin:10px auto 0;border-radius:2px}.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--spacing-md)}.step-card{background:var(--color-card-bg);-webkit-backdrop-filter:var(--backdrop-blur);backdrop-filter:var(--backdrop-blur);border:1px solid var(--color-border);padding:2.5rem 2rem;border-radius:var(--radius-md);position:relative;transition:all .4s ease}.step-card:hover{transform:translateY(-10px);border-color:var(--color-primary);box-shadow:var(--shadow-glow)}.step-number{font-size:4rem;font-weight:900;color:#ffffff08;position:absolute;top:10px;right:20px;line-height:1}.step-card h4{font-size:1.5rem;margin-bottom:1rem;color:#fff}.step-card p{color:var(--color-text-muted);font-size:.95rem}.socks-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.sock-card{display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(145deg,#ffffff08,#ffffff03);-webkit-backdrop-filter:var(--backdrop-blur);backdrop-filter:var(--backdrop-blur);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:2.5rem;transition:all .4s ease;position:relative;overflow:hidden}.sock-card:before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--color-primary);opacity:0;transition:opacity .3s ease}.sock-card:hover{transform:translateY(-5px) scale(1.02);border-color:var(--color-primary);box-shadow:0 20px 50px #0009}.sock-card:hover:before{opacity:1}.sock-card .tag{display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;padding:4px 12px;border-radius:4px;margin-bottom:1.5rem;background:#ffffff1a;color:#fff;align-self:flex-start}.sock-card .tag.dark{background:#00000080;border:1px solid rgba(255,255,255,.1)}.sock-card h4{font-size:2rem;font-weight:800;margin-bottom:.5rem;line-height:1}.sock-card p{color:var(--color-text-muted);margin-bottom:2rem}.btn-text{margin-top:auto;font-weight:700;color:var(--color-primary);text-transform:uppercase;font-size:.9rem;letter-spacing:.1em;display:flex;align-items:center;gap:10px;transition:gap .3s ease}.sock-card:hover .btn-text{gap:15px;text-shadow:0 0 10px var(--color-primary)}.final-survey-container{margin-top:var(--spacing-lg);text-align:center}.final-card{display:block;background:linear-gradient(135deg,#00f3ff1a,#0000);border:1px solid var(--color-primary);padding:4rem 2rem;border-radius:var(--radius-lg);position:relative;overflow:hidden;transition:transform .3s ease}.final-card:hover{transform:scale(1.01);box-shadow:0 0 50px #00f3ff1a}.final-content{position:relative;z-index:2}.final-content h4{font-size:2.5rem;font-weight:800;margin-bottom:1rem}.site-footer{padding:3rem 0;border-top:1px solid var(--color-border);text-align:center;color:var(--color-text-muted);font-size:.85rem}@media(max-width:768px){:root{--spacing-lg: 3rem;--spacing-md: 1.5rem}.container{width:92%}.hero-title{font-size:2.8rem;line-height:1.1}.hero-subtitle{font-size:.9rem;letter-spacing:.1em}.hero-actions{flex-direction:column;gap:1rem;padding:0 1rem}.btn{width:100%;margin-bottom:0}.step-number{font-size:2.5rem;top:5px;right:15px}.socks-grid{grid-template-columns:1fr;gap:1.5rem}.sock-card{padding:1.5rem}.sock-card h4{font-size:1.75rem}.final-card{padding:2.5rem 1.5rem}.final-content h4{font-size:1.6rem}}