*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Hiragino Sans','Noto Sans JP',sans-serif;line-height:1.7;color:#222;background:#fdfcf8 url('assets/paper-texture.png') repeat;background-size:cover;background-attachment:fixed}
.header{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;position:sticky;top:0;background:rgba(255,255,255,0.8);backdrop-filter:blur(8px);border-bottom:1px solid rgba(0,0,0,0.1);z-index:100}
.logo img{height:40px}
.nav{display:flex;gap:20px}
.nav a{color:#333;text-decoration:none;font-weight:500;position:relative}
.nav a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:#00b3ff;transition:width .3s}
.nav a:hover::after{width:100%}
.nav-toggle{display:none;background:none;border:none;font-size:24px}
.hero{display:flex;align-items:center;justify-content:center;text-align:center;min-height:80vh;color:#fff;background:linear-gradient(135deg,#ffffff,#00b3ff,#00e6ff,#ffffff);background-size:300% 300%;animation:gradientMove 12s ease infinite}
@keyframes gradientMove{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
.hero-content{max-width:700px;padding:20px;animation:fadeIn 2s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
h1{font-size:clamp(28px,6vw,56px);margin-bottom:12px;text-shadow:1px 1px 3px rgba(0,0,0,0.3)}
p{font-size:clamp(16px,2vw,20px)}
.btn{display:inline-block;margin-top:20px;padding:12px 28px;border-radius:999px;background:linear-gradient(45deg,#00b3ff,#82d8ed);color:#fff;font-weight:bold;transition:transform .2s}
.btn:hover{transform:scale(1.05)}
.section{padding:64px 24px;max-width:1100px;margin:auto}
.section h2{text-align:center;margin-bottom:32px;font-size:clamp(22px,3vw,32px);background:linear-gradient(45deg,#00b3ff,#82d8ed);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.card{background:rgba(255,255,255,0.9);border-radius:12px;padding:20px;box-shadow:0 4px 12px rgba(0,0,0,0.05);transition:transform .3s}
.card:hover{transform:translateY(-5px)}
.alt{background:rgba(255,255,255,0.6)}
.works{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.works img{width:100%;border-radius:10px;transition:transform .3s}
.works img:hover{transform:scale(1.03)}
.contact form{display:grid;gap:12px;max-width:600px;margin:auto}
input,textarea{width:100%;padding:12px;border-radius:8px;border:1px solid #ccc;font-size:16px;background:rgba(255,255,255,0.8)}
button.btn{border:none;cursor:pointer}
.footer{text-align:center;padding:32px 0;color:#777;font-size:14px}
@media(max-width:720px){.nav{display:none}.nav-toggle{display:block}.hero{min-height:70vh}}