/* ===== RESET & BASE ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;color:#0d0d0d;background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}

/* ===== UTILITIES ===== */
.container{max-width:1140px;margin:0 auto;padding:0 24px}
.section{padding:100px 0}
.section--dark{background:#0a0a0a;color:#f5f5f5}
.tag{display:inline-block;font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:6px 14px;border-radius:100px;margin-bottom:20px}
.tag--blue{background:rgba(13,85,255,.08);color:#0D55FF}
.tag--white{background:rgba(255,255,255,.1);color:rgba(255,255,255,.7)}
.text-center{text-align:center}
.text-muted-light{color:rgba(255,255,255,.5)}
.highlight{color:#0D55FF}
.section__sub{font-size:1.05rem;color:#666;margin-top:12px;max-width:560px;margin-left:auto;margin-right:auto;line-height:1.7}

/* ===== TYPOGRAPHY ===== */
h1,h2,h3,h4,h5{font-weight:700;line-height:1.15;letter-spacing:-.02em}
h1{font-size:clamp(2.2rem,5vw,3.5rem)}
h2{font-size:clamp(1.3rem,2.5vw,1.5rem)}
h3{font-size:clamp(1.1rem,2vw,1.3rem)}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:.95rem;font-weight:600;padding:14px 32px;border-radius:10px;border:none;cursor:pointer;transition:all .25s ease;font-family:'Inter',system-ui,-apple-system,sans-serif}
.btn--primary{background:#0D55FF;color:#fff}
.btn--primary:hover{background:#0a47d6;transform:translateY(-1px);box-shadow:0 8px 30px rgba(13,85,255,.25)}
.btn--outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.25)}
.btn--outline-light:hover{border-color:#fff;background:rgba(255,255,255,.05)}
.btn--sm{font-size:.85rem;padding:10px 22px;border-radius:8px}

/* ===== NAV ===== */
.nav{position:fixed;top:0;left:0;width:100%;z-index:1000;padding:18px 0;transition:all .3s ease}
.nav--scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);padding:12px 0;box-shadow:0 1px 8px rgba(0,0,0,.06)}
.nav__inner{display:flex;align-items:center;justify-content:space-between}
.nav__logo{font-size:1.5rem;font-weight:800;letter-spacing:-.03em;color:#0d0d0d}
.nav__logo span{color:#0D55FF}
.nav__links{display:flex;gap:32px}
.nav__links a{font-size:.9rem;font-weight:500;color:#555;transition:color .2s}
.nav__links a:hover{color:#0d0d0d}
.nav__hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.nav__hamburger span{width:22px;height:2px;background:#0d0d0d;border-radius:2px;transition:all .3s}

/* ===== HERO ===== */
.hero{padding-top:140px;padding-bottom:60px}
.hero__body{font-size:1.1rem;color:#666;margin-top:16px;max-width:600px;margin-left:auto;margin-right:auto;line-height:1.7}

/* ===== SITEMAP GRID ===== */
.sitemap-section{padding-top:0;padding-bottom:80px}
.sitemap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px 48px}

/* ===== SITEMAP GROUP ===== */
.sitemap-group{border:1px solid #e8e8e8;border-radius:16px;padding:32px;transition:all .3s ease}
.sitemap-group:hover{border-color:#d0d0d0;box-shadow:0 4px 20px rgba(0,0,0,.04)}
.sitemap-group__header{margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid #f0f0f0}
.sitemap-group__icon{width:48px;height:48px;border-radius:12px;background:rgba(13,85,255,.06);color:#0D55FF;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.sitemap-group__header h2{margin-bottom:6px;color:#0d0d0d}
.sitemap-group__header p{font-size:.85rem;color:#888;line-height:1.5}

/* ===== SITEMAP LIST ===== */
.sitemap-list li{padding:10px 0;border-bottom:1px solid #f5f5f5;display:flex;align-items:center;justify-content:space-between;gap:12px}
.sitemap-list li:last-child{border-bottom:none}
.sitemap-list li a{font-size:.92rem;font-weight:500;color:#333;transition:all .2s;position:relative}
.sitemap-list li a::before{content:'';position:absolute;bottom:-1px;left:0;width:0;height:1.5px;background:#0D55FF;transition:width .25s ease}
.sitemap-list li a:hover{color:#0D55FF}
.sitemap-list li a:hover::before{width:100%}

/* ===== BADGES ===== */
.sitemap-badge{font-size:.65rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;padding:3px 10px;border-radius:100px;white-space:nowrap;flex-shrink:0}
.sitemap-badge--product{background:rgba(13,85,255,.08);color:#0D55FF}
.sitemap-badge--service{background:rgba(0,0,0,.05);color:#555}
.sitemap-badge--guide{background:rgba(34,139,34,.08);color:#228B22}
.sitemap-badge--case{background:rgba(255,140,0,.08);color:#E07800}
.sitemap-badge--cta{background:rgba(13,85,255,.1);color:#0D55FF;font-weight:700}

/* ===== META TEXT ===== */
.sitemap-meta{font-size:.75rem;color:#999;white-space:nowrap;flex-shrink:0;font-weight:500}

/* ===== PAGE COUNT ===== */
.sitemap-count{text-align:center;margin-top:56px;padding:24px 32px;background:#f8f8f8;border-radius:12px}
.sitemap-count p{font-size:.95rem;color:#666}
.sitemap-count strong{color:#0d0d0d}

/* ===== CTA SECTION ===== */
.cta-section .section__sub{color:rgba(255,255,255,.5)}
.cta-actions{display:flex;gap:16px;justify-content:center;margin-top:32px;flex-wrap:wrap}

/* ===== FOOTER ===== */
.footer{background:#0a0a0a;color:#999;padding:60px 0 30px}
.footer__inner{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:48px;margin-bottom:48px}
.footer__brand p{margin-top:12px;font-size:.85rem;line-height:1.7;max-width:280px}
.footer__col{display:flex;flex-direction:column;gap:10px}
.footer__col h4{color:#fff;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px}
.footer__col a{font-size:.85rem;transition:color .2s}
.footer__col a:hover{color:#fff}
.footer__bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;display:flex;justify-content:space-between;align-items:center;font-size:.8rem}
.footer__bottom div{display:flex;gap:24px}
.footer__bottom a:hover{color:#fff}

/* ===== FADE ANIMATIONS ===== */
.fade-up{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}
.sitemap-grid .sitemap-group:nth-child(2) .fade-up,
.sitemap-grid .sitemap-group.fade-up:nth-child(2){transition-delay:.08s}
.sitemap-grid .sitemap-group.fade-up:nth-child(3){transition-delay:.16s}
.sitemap-grid .sitemap-group.fade-up:nth-child(4){transition-delay:.24s}
.sitemap-grid .sitemap-group.fade-up:nth-child(5){transition-delay:.32s}
.sitemap-grid .sitemap-group.fade-up:nth-child(6){transition-delay:.4s}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .sitemap-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .footer__inner{grid-template-columns:repeat(2,1fr);gap:32px}
}

@media(max-width:768px){
  .section{padding:72px 0}
  .hero{padding-top:120px;padding-bottom:40px}
  .sitemap-grid{grid-template-columns:1fr;gap:24px}
  .sitemap-group{padding:24px}
  .nav__links{display:none;position:fixed;top:0;left:0;width:100%;height:100vh;background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:28px;z-index:999}
  .nav__links.open{display:flex}
  .nav__links a{font-size:1.2rem;color:#0d0d0d}
  .nav__hamburger{display:flex}
  .nav__hamburger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
  .nav__hamburger.open span:nth-child(2){opacity:0}
  .nav__hamburger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
  .nav__cta{display:none}
  .footer__inner{grid-template-columns:1fr;gap:32px}
  .footer__bottom{flex-direction:column;gap:12px;text-align:center}
  .cta-actions{flex-direction:column;align-items:center}
}