/* ── RESET & BASE ── */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --green:#00C389;--green-dark:#009E6E;--green-dim:rgba(0,195,137,0.12);
  --bg:#0A0E17;--bg-card:#111827;--bg-card2:#151E2E;
  --text:#F0F4FF;--muted:#8892A4;--dim:#4A5568;
  --border:#1E2A3A;--border-l:#2A3A50;
  --radius:8px
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);line-height:1.6;font-size:15px}
a{text-decoration:none;color:inherit}
img{max-width:100%}

/* ── NAV ── */
.nav{position:sticky;top:0;z-index:200;background:var(--bg);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:1200px;margin:0 auto;padding:0 2rem}
.nav-logo{font-size:22px;font-weight:600;letter-spacing:3px;color:#fff}
.nav-logo em{color:var(--green);font-style:normal}
.nav-menu{display:flex;align-items:center;height:64px}
.nm-item{position:relative;height:64px;display:flex;align-items:center}
.nm-item>a{font-size:13px;color:#C0CCDD;padding:0 16px;height:64px;display:flex;align-items:center;gap:4px;border-bottom:2px solid transparent;transition:color .2s,border-color .2s;white-space:nowrap}
.nm-item>a:hover,.nm-item.open>a{color:#fff;border-bottom-color:var(--green)}
.nm-item.active>a{color:var(--green);border-bottom-color:var(--green)}
.chev{font-size:10px;transition:transform .2s;color:var(--muted)}
.nm-item.open .chev{transform:rotate(180deg);color:var(--green)}
/* mega */
.mega{display:none;position:absolute;top:65px;left:50%;transform:translateX(-50%);background:var(--bg-card);border:1px solid var(--border-l);border-radius:var(--radius);padding:24px 28px;gap:32px;min-width:360px;z-index:300;box-shadow:0 8px 32px rgba(0,0,0,0.4)}
.nm-item.open .mega{display:flex}
.mega-col-title{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:1.2px;text-transform:uppercase;margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--border)}
.mega a{display:block;font-size:13px;color:#A0AABB;padding:6px 0;transition:color .15s}
.mega a:hover{color:var(--green)}
.mega-simple{display:none;position:absolute;top:65px;left:0;background:var(--bg-card);border:1px solid var(--border-l);border-radius:var(--radius);padding:8px 0;min-width:130px;z-index:300;box-shadow:0 8px 32px rgba(0,0,0,0.4)}
.nm-item.open .mega-simple{display:block}
.mega-simple a{display:block;font-size:13px;color:#A0AABB;padding:9px 18px;transition:color .15s,background .15s}
.mega-simple a:hover{color:var(--green);background:var(--bg-card2)}
.nav-cta{margin-left:12px;font-size:13px;padding:8px 18px;background:var(--green);color:#fff;border-radius:4px;font-weight:500;transition:background .2s}
.nav-cta:hover{background:var(--green-dark)}

/* ── PAGE HERO ── */
.page-hero{padding:72px 2rem 60px}
.page-hero-inner{max-width:1200px;margin:0 auto}
.page-hero-label{font-size:11px;font-weight:600;color:var(--green);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.page-hero-label::before{content:'';width:18px;height:1px;background:var(--green);display:inline-block}
.page-hero h1{font-size:38px;font-weight:600;color:#fff;line-height:1.2;margin-bottom:14px}
.page-hero h1 em{color:var(--green);font-style:normal}
.page-hero p{font-size:15px;color:var(--muted);line-height:1.75;max-width:600px}

/* ── SECTION ── */
.sec{padding:72px 2rem}
.sec-inner{max-width:1200px;margin:0 auto}
.sec-dark{background:var(--bg-card)}
.sec-label{font-size:11px;font-weight:600;color:var(--green);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.sec-label::before{content:'';width:18px;height:1px;background:var(--green)}
.sec-title{font-size:26px;font-weight:600;color:#fff;margin-bottom:10px;line-height:1.3}
.sec-sub{font-size:14px;color:var(--muted);line-height:1.75;max-width:560px;margin-bottom:36px}

/* ── CARDS ── */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.card{background:var(--bg-card2);border:1px solid var(--border);border-radius:10px;padding:28px;transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--green);transform:translateY(-3px)}
.card-icon{width:46px;height:46px;background:var(--green-dim);border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:22px}
.card h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:8px}
.card p{font-size:13px;color:var(--muted);line-height:1.65}
.card-link{display:inline-flex;align-items:center;gap:4px;font-size:13px;color:var(--green);margin-top:14px;font-weight:500}
.card-link::after{content:'→';font-size:13px}

/* ── SPEC TABLE ── */
.spec-table{display:flex;flex-direction:column;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.spec-row{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border)}
.spec-row:last-child{border:none}
.spec-row:nth-child(even){background:var(--bg-card2)}
.spec-label{font-size:13px;color:var(--muted)}
.spec-val{font-size:13px;font-weight:600;color:var(--green)}

/* ── TWO-COL ── */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:start}
.two-col.center{align-items:center}

/* ── CHECKLIST ── */
.checklist{display:flex;flex-direction:column;gap:10px;margin-bottom:28px}
.check-item{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--muted);line-height:1.55}
.check-item::before{content:'✓';color:var(--green);font-weight:700;flex-shrink:0;margin-top:1px}

/* ── HISTORY ── */
.history{display:flex;flex-direction:column;gap:0;position:relative;padding-left:24px}
.history::before{content:'';position:absolute;left:0;top:8px;bottom:8px;width:1px;background:var(--border-l)}
.hist-item{position:relative;padding:0 0 32px 24px}
.hist-item:last-child{padding-bottom:0}
.hist-item::before{content:'';position:absolute;left:-4px;top:6px;width:8px;height:8px;border-radius:50%;background:var(--green)}
.hist-year{font-size:13px;font-weight:600;color:var(--green);margin-bottom:6px}
.hist-content{font-size:13px;color:var(--muted);line-height:1.7}
.hist-content span{display:block;margin-bottom:4px}

/* ── CONTACT FORM ── */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group.full{grid-column:1/-1}
.form-group label{font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.5px;text-transform:uppercase}
.form-group input,.form-group textarea,.form-group select{background:var(--bg-card2);border:1px solid var(--border-l);border-radius:6px;padding:11px 14px;font-size:14px;color:var(--text);outline:none;transition:border-color .2s;font-family:inherit}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--green)}
.form-group textarea{resize:vertical;min-height:120px}
.form-group select option{background:var(--bg-card)}

/* ── BUTTONS ── */
.btn{display:inline-flex;align-items:center;gap:6px;padding:11px 24px;border-radius:4px;font-size:14px;font-weight:500;cursor:pointer;border:none;transition:all .2s}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-dark)}
.btn-outline{background:transparent;border:1px solid var(--border-l);color:#C0CCDD}
.btn-outline:hover{border-color:var(--green);color:var(--green)}

/* ── CTA BANNER ── */
.cta-banner{background:var(--bg-card);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:56px 2rem}
.cta-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:2rem}
.cta-banner h2{font-size:22px;font-weight:600;color:#fff;margin-bottom:6px}
.cta-banner p{font-size:14px;color:var(--muted)}
.cta-btns{display:flex;gap:10px;flex-shrink:0}

/* ── FOOTER ── */
footer{background:var(--bg);border-top:1px solid var(--border);padding:48px 2rem 28px}
.footer-inner{max-width:1200px;margin:0 auto}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;margin-bottom:36px}
.ft-logo{font-size:18px;font-weight:600;letter-spacing:3px;color:#fff;margin-bottom:10px}
.ft-logo em{color:var(--green);font-style:normal}
.ft-desc{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:14px}
.ft-contact{display:flex;flex-direction:column;gap:5px}
.ft-contact span,.ft-contact a{font-size:12px;color:var(--dim)}
.ft-contact a:hover{color:var(--green)}
.ft-col-title{font-size:11px;font-weight:600;color:var(--dim);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}
.ft-nav a{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;transition:color .15s}
.ft-nav a:hover{color:var(--green)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:24px;border-top:1px solid var(--border);font-size:12px;color:var(--dim)}
.isms{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:12px}

/* ── MAP PLACEHOLDER ── */
.map-box{background:var(--bg-card2);border:1px solid var(--border);border-radius:var(--radius);height:320px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;color:var(--muted);font-size:14px}
.map-box .map-icon{font-size:40px}

/* ── CENTER CARDS ── */
.center-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.center-card{background:var(--bg-card2);border:1px solid var(--border);border-radius:10px;overflow:hidden}
.center-card-header{background:var(--green-dim);border-bottom:1px solid var(--border);padding:18px 20px}
.center-card-header h3{font-size:15px;font-weight:600;color:var(--green)}
.center-card-header span{font-size:12px;color:var(--muted);margin-top:2px;display:block}
.center-card-body{padding:18px 20px;display:flex;flex-direction:column;gap:8px}
.center-info-row{display:flex;gap:10px;font-size:13px}
.center-info-label{color:var(--dim);flex-shrink:0;width:56px}
.center-info-val{color:var(--muted)}

/* ── HAMBURGER ── */
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none}
.hamburger span{display:block;width:24px;height:2px;background:#C0CCDD;border-radius:2px;transition:all .3s}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 모바일 nav 드로어 */
.mobile-nav{display:none;position:fixed;top:72px;left:0;right:0;bottom:0;background:var(--bg-card);z-index:500;overflow-y:auto;padding:16px 0}
.mobile-nav.open{display:block}
.mobile-nav-item{border-bottom:1px solid var(--border)}
.mobile-nav-item>a{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;font-size:15px;color:#C0CCDD;text-decoration:none}
.mobile-nav-item>a:active{color:var(--green)}
.mobile-nav-sub{display:none;background:var(--bg-card2);padding:8px 0}
.mobile-nav-sub.open{display:block}
.mobile-nav-sub a{display:block;padding:12px 40px;font-size:14px;color:#8892A4;text-decoration:none;border-bottom:1px solid var(--border)}
.mobile-nav-sub a:last-child{border:none}
.mobile-nav-sub a:active{color:var(--green)}
.mobile-cta{margin:16px 24px}
.mobile-cta a{display:block;text-align:center;padding:14px;background:var(--green);color:#fff;border-radius:6px;font-size:15px;font-weight:500;text-decoration:none}

/* ── TABLET (900px) ── */
@media(max-width:900px){
  .two-col{grid-template-columns:1fr;gap:2rem}
  .center-cards{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:1fr 1fr;gap:2rem}
  .form-grid{grid-template-columns:1fr}
  .form-group.full{grid-column:1}
  .nav-menu{display:none}
  .nav-cta{display:none}
  .hamburger{display:flex}
  .cta-inner{flex-direction:column;gap:1.5rem}
  .cta-btns{width:100%;flex-direction:column}
  .cta-btns .btn{text-align:center;justify-content:center}
  .svc-grid{grid-template-columns:1fr 1fr}
  .card-grid{grid-template-columns:1fr 1fr}
}

/* ── MOBILE (600px) ── */
@media(max-width:600px){
  .nav-inner{padding:0 1rem}
  .sec{padding:48px 1rem}
  .page-hero{padding:48px 1rem 36px}
  .hero{padding:48px 1rem 40px}
  .hero-inner{grid-template-columns:1fr;gap:2rem}
  .hero h1{font-size:28px}
  .hero-desc{font-size:14px}
  .hero-btns{flex-direction:column}
  .hero-btns .btn{text-align:center;justify-content:center}
  .stat-grid{grid-template-columns:1fr 1fr;gap:10px}
  .stat-num{font-size:20px}
  .page-hero h1{font-size:28px}
  .sec-title{font-size:22px}
  .svc-grid{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .center-cards{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:1.5rem}
  .footer-inner{padding:0 1rem}
  footer{padding:36px 1rem 24px}
  .footer-bottom{flex-direction:column;gap:10px;text-align:center}
  .idc-wrap{grid-template-columns:1fr;gap:2rem}
  .about-wrap{grid-template-columns:1fr;gap:2rem}
  .about-num-grid{grid-template-columns:1fr 1fr}
  .cta-banner{padding:40px 1rem}
  .cta-inner{flex-direction:column;gap:1.5rem}
  .cta-btns{width:100%;flex-direction:column}
  .cta-btns .btn{text-align:center;justify-content:center}
  .spec-row{flex-direction:column;align-items:flex-start;gap:4px;padding:12px 16px}
  .hero-stat-row{grid-template-columns:1fr 1fr}
  .form-grid{grid-template-columns:1fr}
  .idc-inner{padding:40px 1rem}
  .two-col{grid-template-columns:1fr;gap:1.5rem}
}