/* reset & base */
*, *::before, *::after {margin:0;padding:0;box-sizing:border-box;}
html {scroll-behavior:smooth;font-size:16px;}
body {font-family:'Noto Sans KR', sans-serif;color:#333;background:#fff;line-height:1.6;overflow-x:hidden;}
a {text-decoration:none;color:inherit;}
ul, ol {list-style:none;}
img {max-width:100%;height:auto;}

img.is-broken {
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:200px;
  background:#f9f9f9;
  border:1px solid var(--border);
  border-radius:0;
  color:#999;
  font-size:1.5rem;
  text-align:center;
  padding:40px;
}

button {cursor:pointer;border:none;background:none;font-family:inherit;}

/* CSS VARIABLES */
:root {
  --primary:#7fc141;
  --primary-dark:#5fa02e;
  --dark:#1a1a1a;
  --text:#333;
  --text-light:#666;
  --border:#e3e3e3;
  --bg-light:#f7f7f7;
  --font-en:'Montserrat', sans-serif;
  --font-ko:'Noto Sans KR', sans-serif;
  --transition:0.3s ease;
  --header-h:74px;
}

/* HEADER */
.header {position:fixed;top:0;left:0;right:0;height:var(--header-h);background:transparent;z-index:1000;}
.header.scrolled {background:#fff;box-shadow:0 1px 8px rgba(0,0,0,0.08);}
.header-inner {width:100%;height:100%;display:flex;align-items:center;padding:0 32px;position:relative;}

/* Logo */
.header-logo {flex-shrink:0;z-index:2;display:flex;align-items:center;gap:10px;}
.header-logo img {height:28px;width:auto;filter:brightness(0) invert(1);}
.header.scrolled .header-logo img {filter:none;}

/* GNB - Center Navigation */
.gnb {position:absolute;left:50%;transform:translateX(-50%);}
.gnb ul {display:flex;gap:0;}
.gnb li {position:relative;}
.gnb li > a {display:block;padding:0 24px;line-height:var(--header-h);font-size:0.95rem;font-weight:600;color:rgba(255,255,255,0.9);letter-spacing:-0.02em;white-space:nowrap;}
.gnb li > a:hover {color:#fff;}
.header.scrolled .gnb li > a {color:var(--text);}
.header.scrolled .gnb li > a:hover {color:var(--primary);}

/* GNB Menu */
.gnb-menu li.on > a {color:var(--primary) !important;}

/* Header Right */
.header-right {margin-left:auto;display:flex;align-items:center;gap:12px;z-index:2;}

/* Hamburger / Profile Icon */
.hamburger {display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:none;border:none;cursor:pointer;position:relative;z-index:10;}
.hamburger svg {width:22px;height:22px;stroke:#fff;}
.header.scrolled .hamburger svg {stroke:var(--dark);}
.hamburger .hamburger-icon {display:none;}
.hamburger .profile-icon {display:block;}

/* Mobile Nav (PC에서 숨김) */
.gnb-brand {display:none;}
.gnb-close {display:none;}
.gnb-copyright {display:none;}
.gnb-toggle {display:none !important;}
.gnb-sub {display:none !important;}

/* HERO */
.hero {position:relative;width:100%;height:100vh;min-height:600px;overflow:hidden;display:flex;align-items:center;justify-content:center;}
.hero-video {position:absolute;inset:0;z-index:0;}
.hero-video video {width:100%;height:100%;object-fit:cover;}

@keyframes heroZoom {
  0% {transform:scale(1);}
  100% {transform:scale(1.1);}
}

@keyframes heroShimmer {
  0% {background-position:200% 0;}
  100% {background-position:-200% 0;}
}

/* Hero Slides */
.hero-slide {position:absolute;inset:0;opacity:0;z-index:0;transition:opacity 1.8s ease;display:flex;align-items:center;justify-content:center;}
.hero-slide.is-leaving {opacity:0;z-index:1;}
.hero-slide.is-active {opacity:1;z-index:2;}
.hero-slide::before {content:'';position:absolute;inset:0;background:rgba(0,0,0,0.5);z-index:1;}
.hero-slide .hero-video {position:absolute;inset:0;z-index:0;}
.hero-slide .hero-content {position:relative;z-index:2;}
.hero-indicators {position:absolute;bottom:32px;left:50%;transform:translateX(-50%);z-index:10;display:flex;gap:10px;}
.hero-dot {width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,0.4);border:none;cursor:pointer;transition:background 0.3s;}
.hero-dot.is-active {background:#fff;}

.hero-replay {
  position:absolute;
  bottom:32px;
  left:50%;
  transform:translateX(-50%);
  z-index:10;
  width:56px;
  height:56px;
  border-radius:50%;
  background:rgba(255,255,255,0.15);
  backdrop-filter:blur(4px);
  border:2px solid rgba(255,255,255,0.5);
  color:#fff;
  cursor:pointer;
  display:none;
  align-items:center;
  justify-content:center;
  transition:background 0.3s;
}

.hero-replay svg {width:22px;height:22px;margin-left:3px;}
.hero-replay:hover {background:rgba(255,255,255,0.3);}
.hero-replay.is-visible {display:flex;}
.hero-content {position:relative;z-index:2;text-align:center;color:#fff;padding:0 24px;}
.hero-sub {font-family:var(--font-en);font-size:0.95rem;font-weight:500;letter-spacing:0.2em;text-transform:uppercase;margin-bottom:20px;opacity:0;transform:translateY(30px);animation:fadeUp 0.8s 0.3s forwards;}
.hero-title {font-size:3rem;font-weight:800;line-height:1.3;margin-bottom:20px;opacity:0;transform:translateY(30px);animation:fadeUp 0.8s 0.6s forwards;}
.hero-desc {font-size:1.1rem;font-weight:300;line-height:1.8;opacity:0;transform:translateY(30px);animation:fadeUp 0.8s 0.9s forwards;}

@keyframes fadeUp {
  to {opacity:1;transform:translateY(0);}
}

/* Hero Tab Bar */
@keyframes fadeUpCenter {
  from {opacity:0;transform:translateX(-50%) translateY(30px);}
  to {opacity:1;transform:translateX(-50%) translateY(0);}
}

/* SECTION COMMON */
.section-title {font-family:var(--font-en);font-size:2rem;font-weight:800;color:var(--dark);margin-bottom:8px;letter-spacing:-0.02em;text-align:center;}

/* Sub Page Hero */
.sub-hero {position:relative;width:100%;height:75px;margin-top:var(--header-h);background:#3f55a5;display:flex;align-items:center;justify-content:flex-start;overflow:hidden;}
.sub-hero-inner {position:relative;z-index:2;max-width:1200px;width:100%;margin:0 auto;padding:0 24px;}
.sub-hero-title {font-family:var(--font-en);font-size:2rem;font-weight:800;color:#fff;letter-spacing:-0.02em;line-height:1;margin-bottom:0;}
.sub-hero-desc {font-size:0.9rem;font-weight:400;color:rgba(255,255,255,0.6);}

/* Sub Page Content */
.sub-page-body {padding:32px 0 0;min-height:60vh;font-size:0.95rem;color:var(--text-light);line-height:1.8;}

/* Home Hero Header Override */
.navbar-on-page #header {background:transparent;box-shadow:none;}
.navbar-on-page #header .gnb-menu li > a {color:#fff;}
.navbar-on-page #header .header-logo img {filter:brightness(0) invert(1);}
.navbar-on-page #header .hamburger svg {stroke:#fff;}
.navbar-on-page #header.scrolled {background:#fff;box-shadow:0 1px 8px rgba(0,0,0,0.08);}
.navbar-on-page #header.scrolled .gnb-menu li > a {color:var(--text);}
.navbar-on-page #header.scrolled .gnb-menu li > a:hover {color:var(--primary);}
.navbar-on-page #header.scrolled .header-logo img {filter:none;}
.navbar-on-page #header.scrolled .hamburger svg {stroke:var(--dark);}

/* 스크롤 Reveal 애니메이션 */
[data-reveal] {opacity:0;transform:translateY(30px);transition:opacity 0.7s cubic-bezier(.23,1,.32,1), transform 0.7s cubic-bezier(.23,1,.32,1);}
[data-reveal].is-visible {opacity:1;transform:translateY(0);}

/* 국내사업 탭 */
/* 탭 콘텐츠 */
.container {max-width:1200px;margin:0 auto;padding:0 24px;}

/* QUICK MENU */
.floating-nav-page {
  position:fixed;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  z-index:900;
  display:flex;
  flex-direction:column;
  gap:2px;
  opacity:0;
  pointer-events:none;
  transition:opacity 0.3s;
}

.floating-nav-page.is-visible {opacity:1;pointer-events:auto;}

.qm-item {
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:4px;
  padding:10px 8px;
  width:72px;
  background:rgba(24,50,65,0.85);
  backdrop-filter:blur(4px);
  color:rgba(255,255,255,0.8);
  font-size:0.65rem;
  text-align:center;
  transition:background 0.2s, color 0.2s;
}

.qm-item:first-child {border-radius:8px 8px 0 0;}
.qm-item:last-child {border-radius:0 0 8px 8px;}
.qm-item:hover {background:var(--primary);color:#fff;}
.qm-item svg {width:22px;height:22px;}
.qm-chatbot {background:var(--primary);color:#fff;}
.qm-chatbot:hover {background:var(--primary-dark);}

/* TOP BUTTON */
.top-btn {
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:900;
  width:44px;
  height:44px;
  border-radius:50%;
  background:var(--dark);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 2px 8px rgba(0,0,0,0.2);
  opacity:0;
  pointer-events:none;
  transition:opacity 0.3s, background 0.3s;
  cursor:pointer;
  border:none;
}

.top-btn.is-visible {opacity:1;pointer-events:auto;}
.top-btn:hover {background:var(--primary);}
.top-btn svg {width:20px;height:20px;}

/* IDC PAGE */
.idc-intro {text-align:center;padding:20px 0 60px;}
.idc-section-title {font-size:1.6rem;font-weight:800;color:var(--dark);margin-bottom:16px;}
.idc-section-desc {font-size:0.95rem;color:var(--text-light);line-height:1.8;}
.idc-infra-section {background:var(--bg-light);padding:60px 0;margin-bottom:60px;}
.idc-grid {display:grid;grid-template-columns:repeat(4, 1fr);gap:24px;margin-top:32px;}
.idc-card {background:#fff;border-radius:12px;padding:32px 24px;box-shadow:0 2px 12px rgba(0,0,0,0.06);transition:transform 0.3s, box-shadow 0.3s;}
.idc-card:hover {transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,0.1);}
.idc-card-icon {width:48px;height:48px;color:var(--primary);margin-bottom:20px;}
.idc-card-icon svg {width:100%;height:100%;}
.idc-card-title {font-size:1.1rem;font-weight:700;color:var(--dark);margin-bottom:16px;}
.idc-card-list {list-style:none;padding:0;}
.idc-card-list li {font-size:0.88rem;color:var(--text-light);padding:6px 0;padding-left:16px;position:relative;}
.idc-card-list li::before {content:'';position:absolute;left:0;top:50%;width:6px;height:6px;border-radius:50%;background:var(--primary);transform:translateY(-50%);}

/* 보안 & 관제 */
.idc-security-grid {display:grid;grid-template-columns:repeat(2, 1fr);gap:20px;margin-top:32px;margin-bottom:60px;}
.idc-sec-item {display:flex;gap:20px;align-items:flex-start;padding:28px;border:1px solid var(--border);border-radius:12px;transition:border-color 0.3s;}
.idc-sec-item:hover {border-color:var(--primary);}
.idc-sec-num {font-family:var(--font-en);font-size:1.5rem;font-weight:800;color:var(--primary);flex-shrink:0;line-height:1;}
.idc-sec-item h4 {font-size:1rem;font-weight:700;color:var(--dark);margin-bottom:8px;}
.idc-sec-item p {font-size:0.88rem;color:var(--text-light);line-height:1.6;}

/* 서비스 라인업 */
.idc-lineup-grid {display:grid;grid-template-columns:repeat(3, 1fr);gap:24px;margin-top:32px;}
.idc-lineup-card {background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,0.06);transition:transform 0.3s;}
.idc-lineup-card:hover {transform:translateY(-4px);}
.idc-lineup-card.featured {border:2px solid var(--primary);}
.idc-lineup-header {font-family:var(--font-en);font-size:1.2rem;font-weight:800;text-align:center;padding:20px;background:var(--dark);color:#fff;}
.idc-lineup-card.featured .idc-lineup-header {background:var(--primary);}
.idc-lineup-body {padding:28px 24px;}
.idc-lineup-desc {font-size:0.9rem;color:var(--text-light);text-align:center;margin-bottom:20px;line-height:1.6;}
.idc-lineup-body ul {list-style:none;padding:0;}
.idc-lineup-body ul li {font-size:0.88rem;color:var(--text);padding:8px 0;padding-left:20px;position:relative;border-bottom:1px solid var(--border);}
.idc-lineup-body ul li:last-child {border-bottom:none;}
.idc-lineup-body ul li::before {content:'✓';position:absolute;left:0;color:var(--primary);font-weight:700;}

/* CTA */
.idc-cta {margin-top:60px;padding:60px 0;background:var(--dark);text-align:center;}
.idc-cta h3 {font-size:1.5rem;font-weight:800;color:#fff;margin-bottom:12px;}
.idc-cta p {font-size:0.95rem;color:rgba(255,255,255,0.6);margin-bottom:28px;}
.idc-cta-btn {display:inline-block;padding:14px 40px;background:var(--primary);color:#fff;font-size:0.95rem;font-weight:700;border-radius:8px;transition:background 0.3s;}
.idc-cta-btn:hover {background:var(--primary-dark);}

/* 입주 절차 */
.colo-process {display:flex;align-items:flex-start;justify-content:center;gap:0;margin-top:32px;margin-bottom:60px;}
.colo-step {text-align:center;flex:1;max-width:180px;}

.colo-step-num {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:50%;
  background:var(--primary);
  color:#fff;
  font-family:var(--font-en);
  font-size:1.1rem;
  font-weight:800;
  margin-bottom:16px;
}

.colo-step h4 {font-size:0.95rem;font-weight:700;color:var(--dark);margin-bottom:8px;}
.colo-step p {font-size:0.82rem;color:var(--text-light);line-height:1.6;}
.colo-step-arrow {color:var(--border);font-size:1.5rem;padding-top:8px;flex-shrink:0;}

/* IDC 반응형 */
@media (max-width:1024px) {
  .idc-grid {grid-template-columns:repeat(2, 1fr);}
  .idc-lineup-grid {grid-template-columns:repeat(3, 1fr);}
}

@media (max-width:768px) {
  .idc-grid {grid-template-columns:1fr;}
  .idc-security-grid {grid-template-columns:1fr;}
  .idc-lineup-grid {grid-template-columns:1fr;}
  .idc-section-title {font-size:1.3rem;}
  .colo-process {flex-direction:column;align-items:center;gap:8px;}
  .colo-step-arrow {transform:rotate(90deg);}
}

/* FOOTER */
.footer {background:#183241;color:rgba(255,255,255,0.6);padding:48px 0 0;font-size:0.85rem;}
.footer-inner {max-width:1200px;margin:0 auto;padding:0 24px;}
.footer-top {display:flex;justify-content:space-between;align-items:center;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,0.1);}
.footer-logo-text {font-size:1.2rem;font-weight:700;color:#fff;display:block;}
.footer-links {display:flex;gap:24px;}
.footer-links a {font-size:0.82rem;color:rgba(255,255,255,0.6);transition:color 0.2s;}
.footer-links a:hover {color:#fff;}
.footer-bottom {padding:10px 0;display:flex;justify-content:space-between;align-items:center;}
.footer-partner img {height:36px;width:auto;opacity:0.6;}
.footer-info p {font-size:0.82rem;line-height:1.8;}
.footer-copyright {opacity:0.7;}
.footer-powered {text-align:center;padding:20px 0;border-top:1px solid rgba(255,255,255,0.06);margin-top:24px;}

.footer-powered span,

.footer-powered a {font-family:var(--font-en);font-size:0.72rem;font-weight:700;text-transform:uppercase;letter-spacing:0.5px;}
.footer-powered span {color:rgba(255,255,255,0.35);}
.footer-powered a {color:#fff;transition:color 0.2s;}
.footer-powered a:hover {color:var(--primary);}

/* RESPONSIVE:SUB-SIDE-NAV HIDE */
@media (max-width:1340px) {
}

/* RESPONSIVE:MOBILE */
@media (max-width:768px) {
  :root {--header-h:60px;}
  .hero-video {display:none;}
  .hamburger {display:flex;}
  .hamburger .hamburger-icon {display:block;}
  .hamburger .profile-icon {display:none;}
  .gnb {
    position:fixed;
    top:0;right:-280px;
    width:280px;height:100vh;
    background:#fff;
    display:flex;
    flex-direction:column;
    padding:22px 28px 40px;
    transition:right 0.35s ease;
    z-index:2000;
    transform:none;
    left:auto;
    box-shadow:-4px 0 20px rgba(0,0,0,0.1);
    overflow-y:auto;
  }
  .gnb.open {right:0;}
  .gnb-brand {display:flex;flex-direction:column;gap:4px;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid #e8e8e8;font-size:1.2rem;font-weight:800;color:#3f55a5;font-family:var(--font-en);}
  .gnb ul {flex-direction:column;gap:0;}
  .gnb-menu > li {position:relative;border-bottom:1px solid #eee;}
  .gnb-menu > li > a {display:block;padding:14px 0;font-size:1rem;color:var(--dark);line-height:1.4;border-bottom:none;}
  .gnb-menu > li > a:hover {color:var(--primary);}
  .gnb-toggle {
    display:flex !important;
    align-items:center;
    justify-content:center;
    position:absolute;
    top:8px;right:0;
    width:36px;height:36px;
    background:none;
    border:1px solid #e8e8e8;
    border-radius:6px;
    font-size:1.1rem;
    font-weight:600;
    color:var(--text-light);
    cursor:pointer;
    transition:all 0.2s;
  }
  .gnb-toggle:hover {background:var(--bg-light);color:var(--primary);}
  .gnb-sub {display:flex !important;flex-direction:column;padding:0 0 0 12px;max-height:0;overflow:hidden;transition:max-height 0.3s ease;}
  .gnb-sub.is-open {padding-bottom:12px;}
  .gnb-sub li {border:none;}
  .gnb-sub li a {display:block;padding:6px 0;font-size:0.88rem;color:var(--text-light);border-bottom:none !important;line-height:1.4;}
  .gnb-sub li a:hover {color:var(--primary);}
  .gnb-close {display:block;position:absolute;top:24px;right:20px;font-size:1.6rem;color:var(--text-light);line-height:1;}
  .gnb-copyright {display:block;margin-top:auto;font-size:0.72rem;color:var(--text-light);font-family:var(--font-en);}
  .header-inner {padding:0 16px;}
  .header-logo img {height:24px;}
  .floating-nav-page {display:none;}
  .top-btn {right:16px;bottom:16px;width:40px;height:40px;}
  .sub-hero {height:65px;}
  .sub-hero-title {font-size:1.4rem;line-height:1;margin-bottom:3px;}
  .sub-hero-desc {font-size:0.75rem;}
  .sub-hero-inner {padding:0 24px;}
  .sub-page-body {padding:30px 0 0;}
  .hero-title {font-size:1.8rem;}
  .hero-desc {font-size:0.9rem;}
  /* 게시판 모바일 */
  .footer-top {flex-direction:column;gap:20px;}
  .footer-links {flex-wrap:wrap;gap:12px;}
  .footer-bottom {flex-direction:column;align-items:center;text-align:center;gap:20px;}
}

/* RESPONSIVE:SMALL MOBILE */
@media (max-width:480px) {
  .sub-hero {height:55px;}
  .sub-hero-title {font-size:1.2rem;line-height:1;margin-bottom:2px;}
  .sub-hero-desc {font-size:0.7rem;}
  .sub-hero-inner {padding:0 20px;}
  .hero-title {font-size:1.5rem;}
  .hero-sub {font-size:0.8rem;}
  .section-title {font-size:1.5rem;}
}