:root {
  --navy: #183d7a;
  --navy-deep: #0f2448;
  --blue: #2f65b8;
  --light: #f3f5f9;
  --line: #e3e8f1;
  --text: #1b2230;
  --muted: #657085;
  --white: #ffffff;
  --shadow: 0 18px 40px rgba(19, 36, 72, 0.08);
  --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans KR", Arial, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(227,232,241,0.7);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 84px; gap: 24px; }
.brand { display: flex; align-items: baseline; gap: 10px; font-weight: 800; }
.brand-ko { font-size: 2rem; color: var(--navy); letter-spacing: -0.04em; }
.brand-en { font-size: 1.25rem; color: var(--navy); font-weight: 800; }
.site-nav { display: flex; gap: 30px; align-items: center; }
.site-nav a { font-weight: 600; color: #2b3140; position: relative; }
.site-nav a.active, .site-nav a:hover { color: var(--navy); }
.site-nav a.active::after, .site-nav a:hover::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -8px; height: 2px; background: var(--navy);
}
.nav-toggle { display: none; border: 0; background: transparent; font-size: 1.8rem; }
.hero {
  background:
    linear-gradient(90deg, rgba(16,38,74,0.92) 0%, rgba(27,66,130,0.76) 42%, rgba(27,66,130,0.24) 100%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.28), transparent 28%),
    linear-gradient(180deg, #4d678e, #7f8fa7);
  color: #fff;
  overflow: hidden;
}
.hero-main { padding: 74px 0 58px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 40px; align-items: center; min-height: 620px; }
.eyebrow, .section-label { text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.82rem; font-weight: 800; color: var(--blue); }
.hero .eyebrow { color: rgba(255,255,255,0.8); }
.hero h1, .sub-hero h1 { margin: 0 0 16px; font-size: clamp(2.8rem, 6vw, 4.6rem); line-height: 1.05; letter-spacing: -0.05em; }
.hero-text { font-size: 1.1rem; max-width: 620px; color: rgba(255,255,255,0.88); }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-width: 160px; height: 54px; padding: 0 24px;
  border-radius: 14px; font-weight: 800; transition: transform .2s ease, opacity .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(180deg, #ff9a24, #f37015); color: #fff; box-shadow: 0 12px 24px rgba(244,113,25,0.28); }
.btn-outline { border: 1px solid rgba(255,255,255,0.4); color: #fff; }
.btn-secondary { margin-top: 18px; background: linear-gradient(180deg, #2b5fae, #173d79); color: #fff; box-shadow: var(--shadow); }
.hero-visual { position: relative; }
.device-stage {
  position: relative; min-height: 460px; border-radius: 30px; padding: 34px;
  background: linear-gradient(180deg, rgba(255,255,255,0.16), rgba(255,255,255,0.05));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2);
}
.device {
  position: absolute; background: linear-gradient(180deg, #232a37, #0c1018); border-radius: 14px;
  box-shadow: 0 22px 35px rgba(0,0,0,0.28), inset 0 1px 0 rgba(255,255,255,0.08);
}
.device.large { width: 260px; height: 110px; bottom: 42px; left: 24px; }
.device.medium { width: 240px; height: 102px; bottom: 44px; right: 8px; }
.device.small { width: 150px; height: 52px; bottom: 26px; left: 230px; }
.device.laptop {
  width: 300px; height: 190px; left: 140px; top: 88px; background: linear-gradient(180deg, #111827, #202838);
  border-radius: 18px 18px 10px 10px;
}
.device.laptop::after {
  content: ""; position: absolute; left: -28px; right: -28px; bottom: -18px; height: 18px;
  background: linear-gradient(180deg, #979da8, #656c78); border-radius: 0 0 18px 18px;
}
.screen-ui {
  position: absolute; inset: 14px; border-radius: 10px;
  background:
    linear-gradient(180deg, rgba(37,99,235,0.28), rgba(37,99,235,0.05)),
    repeating-linear-gradient(180deg, rgba(255,255,255,0.08) 0 12px, transparent 12px 28px),
    linear-gradient(90deg, #0b1d39 0 20%, #17345d 20% 100%);
}
.ports, .ports.mini {
  position: absolute; left: 18px; right: 18px; bottom: 18px; height: 18px;
  background: repeating-linear-gradient(90deg, #e6d9a2 0 18px, #0d1220 18px 28px);
  border-radius: 4px;
}
.ports.mini { height: 12px; bottom: 12px; }
.antenna {
  position: absolute; top: -44px; width: 8px; height: 48px; background: linear-gradient(180deg, #202733, #0b0e14);
  border-radius: 8px;
}
.a1 { left: 22px; } .a2 { left: 58px; } .a3 { left: 94px; } .a4 { left: 130px; } .a5 { left: 166px; }
.section { padding: 84px 0; }
.light-bg { background: var(--light); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.feature-panel { align-items: stretch; }
.section h2 { margin: 8px 0 16px; font-size: clamp(2rem, 4vw, 3rem); line-height: 1.15; letter-spacing: -0.04em; }
.section-desc { color: var(--muted); font-size: 1.06rem; max-width: 700px; }
.icon-cards { display: grid; gap: 18px; margin: 28px 0 12px; }
.icon-cards.three { grid-template-columns: repeat(3, 1fr); }
.icon-card, .feature-card, .support-box, .product-card, .case-card {
  background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 26px; box-shadow: var(--shadow);
}
.icon-card h3, .feature-card h3, .product-card h3, .case-card h3 { margin: 14px 0 8px; font-size: 1.35rem; letter-spacing: -0.03em; }
.icon-card p, .feature-card p, .product-card p, .case-card p { margin: 0; color: var(--muted); }
.icon-badge {
  width: 56px; height: 56px; border-radius: 18px; display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(180deg, rgba(47,101,184,0.16), rgba(24,61,122,0.08)); color: var(--navy); font-weight: 800;
}
.showcase-card, .office-photo, .mission-image, .showcase-image {
  position: relative; border-radius: 28px; min-height: 440px; overflow: hidden; box-shadow: var(--shadow);
}
.showcase-image, .router-wall, .office-photo, .mission-image {
  background:
    linear-gradient(90deg, rgba(17,35,68,0.75), rgba(32,89,170,0.2)),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.08) 0 1px, transparent 1px 120px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.06) 0 1px, transparent 1px 90px),
    linear-gradient(180deg, #8b96a7, #cfd4dc);
}
.showcase-image::before, .office-photo::before, .mission-image::before {
  content: ""; position: absolute; inset: auto 0 0 0; height: 46%;
  background: linear-gradient(180deg, transparent, rgba(16,22,35,0.20));
}
.showcase-image::after, .office-photo::after, .mission-image::after {
  content: ""; position: absolute; left: 7%; right: 7%; bottom: 10%; height: 28%;
  background:
    repeating-linear-gradient(90deg, #c9a86b 0 58px, #a77c47 58px 60px, #7d8591 60px 120px),
    linear-gradient(180deg, #6b7280, #4b5563);
  border-radius: 10px;
  box-shadow: 0 16px 30px rgba(0,0,0,0.18);
}
.showcase-overlay {
  position: absolute; inset: 0; padding: 34px; display: flex; flex-direction: column; justify-content: space-between; color: #fff;
}
.showcase-overlay h3 { font-size: 3rem; line-height: 1.05; margin: 0; letter-spacing: -0.05em; }
.showcase-overlay h3 span { display: block; font-size: 2.2rem; }
.showcase-overlay p { font-weight: 700; color: rgba(255,255,255,0.82); }
.feature-grid { display: grid; gap: 22px; margin-top: 28px; }
.feature-grid.three { grid-template-columns: repeat(3, 1fr); }
.feature-grid.four { grid-template-columns: repeat(4, 1fr); }
.feature-icon { font-size: 2.2rem; }
.stats-band { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; }
.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.stat-box {
  background: linear-gradient(180deg, #183d7a, #102749); color: #fff; border-radius: 22px; padding: 28px; box-shadow: var(--shadow);
}
.stat-box strong { display: block; font-size: 1.8rem; margin-bottom: 8px; }
.site-footer {
  background: linear-gradient(180deg, #1d2431, #111722); color: rgba(255,255,255,0.88); padding: 42px 0; margin-top: 30px;
}
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: start; }
.footer-brand { font-size: 2rem; font-weight: 800; margin-bottom: 10px; }
.footer-brand span { opacity: 0.9; }
.footer-links { display: grid; gap: 12px; }
.sub-hero {
  padding: 92px 0 70px;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(17,37,73,0.92), rgba(42,83,149,0.62)),
    linear-gradient(180deg, #6e7f97, #c4ccd7);
}
.sub-hero .breadcrumb { color: rgba(255,255,255,0.84); margin-bottom: 10px; }
.company-hero, .products-hero, .solutions-hero, .support-hero, .english-hero { position: relative; overflow: hidden; }
.company-hero::after, .products-hero::after, .solutions-hero::after, .support-hero::after, .english-hero::after {
  content: ""; position: absolute; inset: 0; background:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.04) 0 2px, transparent 2px 130px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.04) 0 2px, transparent 2px 100px);
  pointer-events: none;
}
.intro-block .office-photo { min-height: 360px; }
.quote-box { margin-top: 18px; color: var(--muted); font-weight: 600; }
.mission-banner {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 28px; align-items: center; padding: 26px;
  background: linear-gradient(180deg, #fff, #f8fbff); border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow);
}
.mission-image { min-height: 230px; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 28px; }
.product-visual {
  height: 220px; border-radius: 20px; margin-bottom: 18px;
  background:
    linear-gradient(180deg, rgba(24,61,122,0.24), rgba(24,61,122,0.05)),
    linear-gradient(180deg, #dbe2ec, #f5f7fa);
  position: relative; overflow: hidden;
}
.product-visual::before {
  content: ""; position: absolute; left: 10%; right: 10%; bottom: 18%; height: 28%; border-radius: 12px;
  background: linear-gradient(180deg, #232a37, #0c1018); box-shadow: 0 18px 28px rgba(0,0,0,0.22);
}
.product-visual::after {
  content: ""; position: absolute; width: 8px; height: 54px; background: #10151c; border-radius: 8px; top: 26%; left: 24%;
  box-shadow: 32px 0 0 #10151c, 64px 0 0 #10151c, 96px 0 0 #10151c;
}
.router-b::after { left: 30%; box-shadow: 38px 0 0 #10151c, 76px 0 0 #10151c, 114px 0 0 #10151c, 152px 0 0 #10151c; }
.router-c::after { left: 34%; box-shadow: 28px 0 0 #10151c, 56px 0 0 #10151c; }
.case-list { display: grid; gap: 20px; }
.support-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.support-box ul { margin: 10px 0 0 20px; padding: 0; color: var(--muted); }
@media (max-width: 1024px) {
  .hero-grid, .two-col, .stats-band, .mission-banner, .product-grid, .feature-grid.four { grid-template-columns: 1fr; }
  .icon-cards.three, .feature-grid.three, .support-grid { grid-template-columns: 1fr; }
  .showcase-card, .office-photo, .showcase-image { min-height: 360px; }
}
@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: 84px; left: 16px; right: 16px; background: #fff; border: 1px solid var(--line); border-radius: 18px;
    padding: 18px; box-shadow: var(--shadow); display: none; flex-direction: column; align-items: flex-start; gap: 14px;
  }
  .site-nav.open { display: flex; }
  .brand-ko { font-size: 1.7rem; }
  .brand-en { font-size: 1rem; }
  .hero-main { padding-top: 40px; }
  .hero-grid { min-height: auto; }
  .device-stage { min-height: 380px; }
  .device.laptop { width: 220px; height: 148px; left: 82px; top: 80px; }
  .device.large { width: 180px; height: 82px; }
  .device.medium { width: 170px; height: 76px; }
  .device.small { left: 144px; width: 112px; }
  .section { padding: 64px 0; }
}
@media (max-width: 560px) {
  .container { width: min(100% - 20px, 1180px); }
  .hero h1, .sub-hero h1 { font-size: 2.5rem; }
  .btn { width: 100%; }
  .hero-actions { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; }
  .showcase-overlay h3 { font-size: 2.2rem; }
}