/* ===== Reset & Base ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"Helvetica Neue",Arial,"Hiragino Kaku Gothic ProN","Hiragino Sans",Meiryo,sans-serif;background:#0a0a0f;color:#e0e0e8;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}

/* ===== Utility ===== */
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.section-title{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;letter-spacing:.04em;margin-bottom:12px}
.section-subtitle{color:#9a9ab0;font-size:.95rem;margin-bottom:48px}
.accent{background:linear-gradient(135deg,#00e5ff,#2979ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* fade-in */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ===== Header / Nav ===== */
.site-header.scrolled{background:rgba(10,10,15,.95);box-shadow:0 2px 20px rgba(0,0,0,.4)}
.site-header{position:fixed;top:0;left:0;width:100%;z-index:100;background:rgba(10,10,15,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.06);transition:background .3s}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-size:1.25rem;font-weight:700;letter-spacing:.08em}
.logo span{background:linear-gradient(135deg,#00e5ff,#2979ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-links{display:flex;gap:28px;font-size:.85rem;font-weight:500}
.nav-links a{color:#b0b0c0;transition:color .25s}
.nav-links a:hover{color:#00e5ff}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:4px}
.hamburger span{display:block;width:22px;height:2px;background:#e0e0e8;border-radius:2px;transition:transform .3s,opacity .3s}

/* ===== Hero ===== */
.hero-canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0}
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden;padding-top:64px;text-align:center}
.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 30% 40%,rgba(0,229,255,.08) 0%,transparent 60%),radial-gradient(ellipse at 70% 60%,rgba(41,121,255,.06) 0%,transparent 55%);pointer-events:none}
.hero-content{position:relative;z-index:1}
.hero-label{font-size:clamp(.85rem,1.2vw,1rem);font-weight:600;letter-spacing:.25em;background:linear-gradient(135deg,#00e5ff,#2979ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:24px}
.hero h1{font-size:clamp(2.6rem,7vw,5rem);font-weight:800;line-height:1.2;letter-spacing:.04em;margin-bottom:24px}
.hero .sub-copy{font-size:clamp(1rem,2vw,1.3rem);color:#9a9ab0;margin-bottom:0;line-height:1.7}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 32px;border-radius:8px;font-size:.95rem;font-weight:600;transition:transform .2s,box-shadow .2s,background .3s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(135deg,#00e5ff,#2979ff);color:#0a0a0f}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(0,229,255,.3)}
.btn-outline{background:transparent;color:#e0e0e8;border:1px solid rgba(255,255,255,.18)}
.btn-outline:hover{border-color:#00e5ff;color:#00e5ff;transform:translateY(-2px)}

/* ===== About ===== */
.about{padding:120px 0 100px}
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.about-item{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:14px;padding:36px 28px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);transition:border-color .3s}
.about-item:hover{border-color:rgba(0,229,255,.25)}
.about-item h3{font-size:1.1rem;margin-bottom:10px;font-weight:600}
.about-item p{font-size:.9rem;color:#9a9ab0;line-height:1.75}

/* ===== Services ===== */
.services{padding:100px 0}
.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.service-card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:14px;padding:36px 24px;text-align:center;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);transition:transform .3s,border-color .3s,box-shadow .3s}
.service-card:hover{transform:translateY(-6px);border-color:rgba(0,229,255,.3);box-shadow:0 8px 32px rgba(0,229,255,.08)}
.service-icon{font-size:2.4rem;margin-bottom:18px;display:block}
.service-card h3{font-size:1rem;font-weight:600;margin-bottom:10px}
.service-card p{font-size:.85rem;color:#9a9ab0;line-height:1.7}

/* ===== Strengths ===== */
.strengths{padding:100px 0}
.strengths-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;counter-reset:strength}
.strength-item{position:relative;padding:36px 28px 36px 28px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:14px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);transition:border-color .3s}
.strength-item:hover{border-color:rgba(0,229,255,.25)}
.strength-num{font-size:2.8rem;font-weight:800;background:linear-gradient(135deg,#00e5ff,#2979ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:14px;display:block}
.strength-item h3{font-size:1.05rem;font-weight:600;margin-bottom:8px}
.strength-item p{font-size:.88rem;color:#9a9ab0;line-height:1.7}

/* ===== Company ===== */
.company{padding:100px 0}
.company-table{max-width:640px;margin:0 auto}
.company-row{display:flex;border-bottom:1px solid rgba(255,255,255,.06);padding:18px 0}
.company-row dt{width:160px;flex-shrink:0;font-weight:600;font-size:.92rem;color:#c0c0d0}
.company-row dd{font-size:.92rem;color:#9a9ab0;line-height:1.7}
.company-row dd a{color:#00e5ff;transition:opacity .25s}
.company-row dd a:hover{opacity:.7}
.map-title{font-size:1.1rem;font-weight:600;margin-top:64px;margin-bottom:20px;letter-spacing:.04em}
.map-wrap{border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.06);aspect-ratio:16/7}
.map-wrap iframe{width:100%;height:100%;display:block}

/* ===== Contact ===== */
.contact{padding:100px 0;text-align:center}
.contact p{color:#9a9ab0;margin-bottom:36px;font-size:1rem}
.contact-links{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.contact-links .btn{font-size:.95rem;padding:14px 32px}

/* ===== Footer ===== */
.site-footer{border-top:1px solid rgba(255,255,255,.06);padding:40px 0}
.site-footer .container{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-links{display:flex;gap:24px;font-size:.82rem}
.footer-links a{color:#6a6a80;transition:color .25s}
.footer-links a:hover{color:#00e5ff}
.copyright{font-size:.8rem;color:#4a4a60}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .services-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-links{position:fixed;top:64px;right:0;width:240px;height:calc(100vh - 64px);background:rgba(10,10,15,.96);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);flex-direction:column;padding:32px 28px;gap:20px;transform:translateX(100%);transition:transform .3s ease;border-left:1px solid rgba(255,255,255,.06)}
  .nav-links.open{transform:translateX(0)}
  .hamburger{display:flex}
  .about-grid,.strengths-grid{grid-template-columns:1fr}
  .services-grid{grid-template-columns:1fr}
  .hero h1{font-size:clamp(2rem,8vw,3rem)}
  .company-row{flex-direction:column;gap:4px}
  .company-row dt{width:auto}
  .site-footer .container{flex-direction:column;text-align:center}
}