:root{--bg:#030f1d;--surface:#071a2e;--surface-2:#0a2541;--surface-3:#103154;--text:#f6fbff;--muted:#9bb3c9;--line:rgba(138,196,240,.2);--primary:#56aff2;--primary-strong:#2387df;--glow:rgba(53,155,234,.32);--header:rgba(3,15,29,.76);--field:rgba(255,255,255,.04);--shadow:0 24px 80px rgba(0,0,0,.28);color-scheme:dark}
:root[data-theme="light"]{--bg:#f6faff;--surface:#fff;--surface-2:#edf6ff;--surface-3:#dceefe;--text:#07182b;--muted:#526a80;--line:rgba(19,82,134,.15);--primary:#087bd5;--primary-strong:#0062b5;--glow:rgba(39,142,218,.17);--header:rgba(248,252,255,.84);--field:#f3f8fc;--shadow:0 24px 70px rgba(20,77,120,.12);color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:84px}body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Sans KR",sans-serif;line-height:1.6;transition:background .25s,color .25s}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}img,svg{display:block;max-width:100%}.skip-link{position:fixed;z-index:999;top:8px;left:8px;padding:10px 16px;background:var(--text);color:var(--bg);transform:translateY(-150%)}.skip-link:focus{transform:none}.eyebrow{margin:0 0 14px;color:var(--primary);font-family:Inter,sans-serif;font-size:12px;font-weight:700;letter-spacing:.16em}.site-header{position:fixed;z-index:100;top:0;left:0;right:0;height:76px;display:flex;align-items:center;padding:0 clamp(22px,4.2vw,72px);border-bottom:1px solid transparent;transition:.25s}.site-header.scrolled{background:var(--header);border-color:var(--line);backdrop-filter:blur(18px)}.brand{display:flex;width:182px}.brand img{width:100%;height:auto}.desktop-nav{display:flex;gap:clamp(24px,3.2vw,54px);margin:auto;font-size:14px;font-weight:600}.desktop-nav a{position:relative;padding:27px 0}.desktop-nav a:after{position:absolute;right:0;bottom:19px;left:0;height:2px;background:var(--primary);content:"";transform:scaleX(0);transition:.2s}.desktop-nav a:hover:after,.desktop-nav a:focus-visible:after{transform:scaleX(1)}.header-actions{display:flex;align-items:center;gap:16px}.theme-toggle{display:flex;align-items:center;gap:6px;padding:4px;border:0;background:transparent;color:var(--muted);cursor:pointer}.toggle-track{width:38px;height:21px;padding:3px;border:1px solid var(--line);border-radius:20px;background:var(--surface-2)}.toggle-track i{display:block;width:13px;height:13px;border-radius:50%;background:var(--primary);transform:translateX(0);transition:.25s}:root[data-theme="light"] .toggle-track i{transform:translateX(17px)}.menu-toggle,.mobile-nav{display:none}.hero{position:relative;min-height:780px;padding:170px clamp(22px,7.2vw,120px) 0;overflow:hidden;background:radial-gradient(circle at 73% 33%,var(--glow),transparent 28%),linear-gradient(112deg,var(--bg) 0%,var(--bg) 48%,var(--surface-2) 100%)}.hero:before{position:absolute;inset:0;background:linear-gradient(90deg,transparent 49.9%,var(--line) 50%,transparent 50.1%);content:"";opacity:.5}.hero-grid{position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:72px 72px;mask-image:linear-gradient(90deg,transparent 30%,#000 100%);opacity:.2}.hero-copy{position:relative;z-index:2;width:min(670px,53vw)}.hero h1,.section h2{margin:0;font-size:clamp(42px,4.65vw,76px);line-height:1.18;letter-spacing:-.055em}.hero h1 em,.section h2 em{color:var(--primary);font-style:normal}.hero-description{max-width:590px;margin:28px 0 0;color:var(--muted);font-size:17px;line-height:1.9}.hero-actions{display:flex;gap:12px;margin-top:38px}.button{display:inline-flex;min-height:52px;align-items:center;justify-content:space-between;gap:32px;padding:0 20px;border:1px solid var(--line);font-size:14px;font-weight:700;transition:.2s}.button:hover{transform:translateY(-2px);box-shadow:0 12px 30px var(--glow)}.button.primary{border-color:var(--primary-strong);background:var(--primary-strong);color:#fff}.button.ghost{background:var(--field)}.button span{font-size:20px;font-weight:400}.hero-visual{position:absolute;z-index:1;top:114px;right:4vw;width:min(50vw,700px);height:560px}.hero-visual img{position:absolute;z-index:2;top:40px;right:2%;width:65%;filter:drop-shadow(0 40px 50px rgba(0,0,0,.46));transform:scale(1.18)}.orbit{position:absolute;border:1px solid var(--line);border-radius:50%}.orbit-one{inset:4% 1% 8% 18%}.orbit-two{inset:17% 14% 22% 30%}.signal-dot{position:absolute;z-index:3;width:9px;height:9px;border:2px solid var(--primary);box-shadow:0 0 18px var(--primary)}.dot-one{top:21%;left:23%}.dot-two{top:38%;left:13%}.dot-three{bottom:22%;left:33%}.hero-service-strip{position:absolute;z-index:4;right:0;bottom:0;left:0;display:grid;grid-template-columns:repeat(4,1fr);padding:0 clamp(22px,7.2vw,120px);border-top:1px solid var(--line);background:color-mix(in srgb,var(--surface-2) 88%,transparent);backdrop-filter:blur(15px)}.hero-service-strip span{display:flex;align-items:center;justify-content:center;gap:14px;min-height:110px;border-right:1px solid var(--line);font-size:15px;font-weight:600}.hero-service-strip span:first-child{border-left:1px solid var(--line)}.hero-service-strip i{color:var(--primary);font-family:Inter,sans-serif;font-size:13px;font-style:normal}.section{padding:clamp(86px,9vw,148px) clamp(22px,7.2vw,120px)}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:48px}.section-heading h2{font-size:clamp(38px,4vw,62px)}.section-heading>p{margin:0;color:var(--muted);text-align:right}.business-section{background:var(--surface)}.business-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.business-card{position:relative;min-height:390px;padding:34px 28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden;transition:.25s}.business-card:before{position:absolute;inset:auto 0 0;height:0;background:linear-gradient(180deg,transparent,var(--glow));content:"";transition:.3s}.business-card:hover:before{height:70%}.business-card.featured{background:linear-gradient(145deg,var(--surface-3),var(--surface-2))}.card-number{color:var(--muted);font:600 12px Inter}.card-icon{position:relative;width:82px;height:82px;margin:54px 0 42px;border:1px solid var(--line);border-radius:50%}.card-icon:before,.card-icon:after{position:absolute;content:""}.camera-icon:before{width:34px;height:23px;top:28px;left:23px;border:2px solid var(--primary);border-radius:6px 6px 12px 12px}.camera-icon:after{width:8px;height:8px;top:36px;left:36px;border:2px solid var(--primary);border-radius:50%}.road-icon:before{top:17px;left:32px;width:15px;height:45px;border-right:2px solid var(--primary);border-left:2px solid var(--primary);transform:perspective(30px) rotateX(20deg)}.network-icon:before{inset:26px;border:2px solid var(--primary);border-radius:50%;box-shadow:-20px 20px 0 -7px var(--surface),-20px 20px 0 -5px var(--primary),20px 20px 0 -7px var(--surface),20px 20px 0 -5px var(--primary)}.signal-icon:before{top:19px;left:27px;width:24px;height:40px;border:2px solid var(--primary);border-radius:50%}.signal-icon:after{top:29px;left:37px;width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 14px var(--primary)}.business-card h3{position:relative;margin:0 0 14px;font-size:22px}.business-card p{position:relative;min-height:54px;margin:0;color:var(--muted);font-size:14px}.business-card a{position:absolute;z-index:1;bottom:30px;color:var(--primary);font-size:13px;font-weight:700}.process-section{display:grid;grid-template-columns:.9fr 1.1fr;gap:10vw}.process-copy h2,.map-copy h2,.contact-info h2{font-size:clamp(38px,4vw,64px)}.process-copy>p:last-child,.map-copy>p,.contact-info>p{max-width:520px;color:var(--muted);line-height:1.9}.process-list{margin:0;padding:0;border-top:1px solid var(--line);list-style:none}.process-list li{display:grid;grid-template-columns:75px 1fr;gap:20px;padding:26px 8px;border-bottom:1px solid var(--line)}.process-list span{color:var(--primary);font:600 12px Inter}.process-list strong{font-size:18px}.process-list p{margin:5px 0 0;color:var(--muted);font-size:14px}.map-section{display:grid;grid-template-columns:.85fr 1.15fr;align-items:center;gap:9vw;background:linear-gradient(135deg,var(--surface),var(--surface-2))}.map-copy .button{margin-top:24px}.korea-map{position:relative;display:flex;min-height:590px;align-items:center;justify-content:center;border:1px solid var(--line);background:radial-gradient(circle at 55% 42%,var(--glow),transparent 45%)}.korea-map svg{width:420px;height:540px}.map-shape,.map-island{fill:url(#mapFill);stroke:var(--primary);stroke-width:1.5}.map-lines path{fill:none;stroke:var(--primary);stroke-width:1;opacity:.35}.map-nodes circle{fill:var(--primary);stroke:color-mix(in srgb,var(--primary) 25%,transparent);stroke-width:14}.map-note{position:absolute;right:22px;bottom:20px;display:flex;align-items:center;gap:12px;padding:13px 16px;border:1px solid var(--line);background:var(--header);backdrop-filter:blur(10px)}.map-note>span{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 14px var(--primary)}.map-note p{margin:0;color:var(--muted);font-size:11px}.map-note strong{display:block;color:var(--text);font-size:12px}.resources-section{background:var(--surface)}.resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.resource-grid article{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;min-height:170px;padding:28px;border:1px solid var(--line);background:var(--field);transition:.2s}.resource-grid article:hover{border-color:var(--primary);transform:translateY(-3px)}.resource-grid article>span{display:grid;width:58px;height:66px;place-items:center;border:1px solid var(--primary);color:var(--primary);font:700 11px Inter}.resource-grid h3{margin:0 0 7px;font-size:17px}.resource-grid p{margin:0;color:var(--muted);font-size:13px}.resource-grid a{color:var(--primary);font-size:13px;font-weight:700}.contact-section{display:grid;grid-template-columns:.8fr 1.2fr;gap:9vw}.contact-info dl{margin:48px 0 0}.contact-info dl div{padding:18px 0;border-top:1px solid var(--line)}.contact-info dt{color:var(--muted);font-size:12px}.contact-info dd{margin:5px 0 0;font-size:16px;font-weight:600}.contact-form{display:grid;gap:25px;padding:38px;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}.contact-form label>span{display:block;margin-bottom:8px;color:var(--muted);font-size:12px}.contact-form input,.contact-form textarea{width:100%;border:0;border-bottom:1px solid var(--line);border-radius:0;outline:none;background:transparent;color:var(--text);transition:.2s}.contact-form input{height:48px}.contact-form textarea{padding:12px 0;resize:vertical}.contact-form input:focus,.contact-form textarea:focus{border-color:var(--primary)}.privacy-check{display:flex;align-items:flex-start;gap:10px}.privacy-check input{width:18px;height:18px;margin:3px 0 0;accent-color:var(--primary)}.privacy-check span{line-height:1.6}.submit-button{width:100%;border:0;cursor:pointer}.form-alert{padding:13px 15px;border:1px solid var(--line);font-size:13px}.form-alert.success{border-color:#43b87b;color:#43b87b}.form-alert.error{border-color:#f07373;color:#f07373}.trap{position:absolute!important;width:1px!important;height:1px!important;overflow:hidden!important;clip:rect(1px,1px,1px,1px)!important}.site-footer{display:grid;grid-template-columns:180px 1fr auto;align-items:center;gap:50px;padding:40px clamp(22px,7.2vw,120px);border-top:1px solid var(--line);color:var(--muted);font-size:12px}.site-footer img{width:170px}.site-footer p{margin:3px 0}.copyright{text-align:right}

@media(max-width:1080px){.desktop-nav{gap:22px}.hero{min-height:720px}.hero-visual{right:-10vw}.business-grid{grid-template-columns:repeat(2,1fr)}.business-card{min-height:330px}.process-section,.map-section,.contact-section{gap:6vw}.resource-grid{grid-template-columns:1fr}.resource-grid article{min-height:130px}}
@media(max-width:780px){html{scroll-padding-top:68px}.site-header{height:66px;padding:0 20px}.brand{width:142px}.desktop-nav{display:none}.header-actions{margin-left:auto}.theme-toggle>span:first-child,.theme-toggle>span:last-child{display:none}.menu-toggle{display:grid;width:38px;height:38px;padding:9px;border:0;background:transparent;place-content:center;gap:7px}.menu-toggle span{display:block;width:22px;height:1px;background:var(--text);transition:.2s}.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}.mobile-nav{position:absolute;top:66px;right:0;left:0;display:grid;max-height:0;overflow:hidden;background:var(--surface);transition:.3s}.mobile-nav.open{max-height:380px;border-bottom:1px solid var(--line)}.mobile-nav a{padding:15px 24px;border-top:1px solid var(--line);font-size:14px}.hero{min-height:830px;padding:126px 22px 0}.hero-copy{width:100%}.hero h1{font-size:clamp(38px,11vw,58px)}.hero-description{font-size:15px}.hero-visual{top:400px;right:-24%;width:115vw;height:330px}.hero-visual img{top:15px;right:5%;width:62%;transform:none}.hero-service-strip{grid-template-columns:repeat(2,1fr);padding:0}.hero-service-strip span{min-height:67px;font-size:12px}.hero-service-strip span:nth-child(odd){border-left:0}.section{padding:84px 22px}.section-heading{display:block}.section-heading>p{margin-top:18px;text-align:left}.business-grid{grid-template-columns:1fr 1fr}.business-card{min-height:295px;padding:24px 20px}.card-icon{width:62px;height:62px;margin:33px 0 28px;transform:scale(.8);transform-origin:left}.business-card h3{font-size:17px}.business-card p{font-size:12px}.business-card a{bottom:22px}.process-section,.map-section,.contact-section{grid-template-columns:1fr;gap:54px}.process-list li{grid-template-columns:45px 1fr}.korea-map{min-height:500px}.korea-map svg{width:330px;height:440px}.resource-grid article{grid-template-columns:auto 1fr}.resource-grid article>a{grid-column:2}.contact-form{padding:24px 20px}.form-row{grid-template-columns:1fr}.site-footer{grid-template-columns:1fr;gap:15px}.copyright{text-align:left}}
@media(max-width:430px){.hero-actions{display:grid;grid-template-columns:1fr 1fr}.button{gap:12px;padding:0 14px}.business-grid{grid-template-columns:1fr}.business-card{min-height:275px}.korea-map{min-height:440px}.korea-map svg{width:270px;height:370px}.map-note{right:12px;bottom:12px;left:12px}.resource-grid article{padding:21px}.contact-info h2,.map-copy h2,.process-copy h2{font-size:36px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}

/* Local/system font stack keeps the site independent from external font CDNs. */
body{overflow-x:hidden;font-family:Pretendard,"Noto Sans KR","Apple SD Gothic Neo","Malgun Gothic",sans-serif}
.eyebrow,.hero-service-strip i,.card-number,.process-list span,.resource-grid article>span{font-family:Arial,sans-serif}
.hero-visual img{right:-8%;width:90%;transform:scale(1.75);transform-origin:65% 42%}

/* Keep the composition readable on ultrawide desktop screens. */
@media(min-width:1601px){.site-header{right:auto;left:50%;width:1600px;transform:translateX(-50%)}main,.site-footer{width:1600px;margin-right:auto;margin-left:auto}.hero h1{font-size:68px}.site-header.scrolled{box-shadow:0 0 0 100vmax var(--header);clip-path:inset(0 -100vmax)}}
@media(max-width:780px){.hero-copy{width:calc(100vw - 44px);min-width:0;max-width:calc(100vw - 44px)}.hero h1{max-width:100%;font-size:clamp(33px,9.3vw,44px);word-break:break-all;overflow-wrap:anywhere}.hero-description{max-width:100%;font-size:14px;word-break:break-all}.hero-actions{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.hero-actions .button{min-width:0;gap:8px;font-size:13px}.hero-visual{top:430px;right:-5%;width:105vw;height:300px}.hero-visual img{top:-28px;right:-9%;width:88%;transform:scale(1.3);transform-origin:65% 42%}}

/* Option A production composition */
.hero{background-image:linear-gradient(90deg,rgba(2,12,25,.97) 0%,rgba(2,12,25,.9) 39%,rgba(2,12,25,.36) 72%,rgba(2,12,25,.56) 100%),url('/assets/images/hero-smart-city.webp');background-position:center;background-size:cover}
.hero:before{background:linear-gradient(90deg,transparent 49.9%,rgba(114,186,241,.18) 50%,transparent 50.1%)}
.hero-copy{text-shadow:0 2px 26px rgba(0,0,0,.3)}
.hero-visual{right:1vw}
.hero-visual img{top:-4px;right:-1%;width:76%;transform:none;filter:drop-shadow(0 38px 46px rgba(0,0,0,.55))}
:root[data-theme="light"] .hero{background-image:linear-gradient(90deg,rgba(246,250,255,.98) 0%,rgba(246,250,255,.92) 42%,rgba(235,246,255,.45) 73%,rgba(235,246,255,.65) 100%),url('/assets/images/hero-smart-city.webp')}

.business-section{padding-top:90px;padding-bottom:100px}
.business-grid{gap:12px;border:0}
.business-card{min-height:300px;padding:26px;border:1px solid var(--line);background-position:center;background-size:cover;isolation:isolate}
.business-card:before{z-index:-1;inset:0;height:auto;background:linear-gradient(180deg,rgba(2,12,25,.35),rgba(2,12,25,.93) 88%);transition:.25s}
.business-card:hover:before{height:auto;background:linear-gradient(180deg,rgba(6,36,65,.18),rgba(2,20,38,.96) 88%)}
.business-card:after{position:absolute;z-index:-1;inset:0;border:1px solid transparent;content:"";transition:.25s}
.business-card:hover:after{border-color:var(--primary)}
.business-security{background-image:url('/assets/images/hero-smart-city.webp')}
.business-traffic{background-image:url('/assets/images/business-traffic-cctv.webp')}
.business-network{background-image:url('/assets/images/business-network.webp')}
.business-telecom{background-image:url('/assets/images/business-telecom.webp')}
.business-card .card-number{position:relative;color:#9cc7ea}
.business-card{display:flex;flex-direction:column}
.business-card h3{margin-top:auto;color:#fff;font-size:21px}
.business-card p{max-width:260px;min-height:0;color:#bbcede}
.business-card a{position:static;margin-top:15px;color:#7ec5fb}

.showcase-section{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding-top:90px;padding-bottom:90px;background:var(--bg)}
.solution-feature,.coverage-feature{position:relative;min-height:500px;border:1px solid var(--line);overflow:hidden;background-color:var(--surface)}
.solution-feature{background-image:linear-gradient(90deg,rgba(2,15,29,.98) 0%,rgba(2,15,29,.83) 42%,rgba(2,15,29,.18) 76%),url('/assets/images/solution-control-room.webp');background-position:center;background-size:cover}
.feature-copy{position:relative;z-index:2;width:52%;padding:54px 0 48px 48px}
.feature-copy h2,.coverage-copy h2{font-size:clamp(32px,3vw,50px)}
.feature-copy>p:not(.eyebrow),.coverage-copy>p:not(.eyebrow){color:#a8bfd2;font-size:14px;line-height:1.85}
.feature-copy .button{margin-top:18px;color:#fff}
.coverage-feature{display:grid;grid-template-columns:.82fr 1.18fr;background:linear-gradient(135deg,var(--surface),var(--surface-2))}
.coverage-copy{position:relative;z-index:2;padding:54px 0 42px 44px}
.coverage-copy>a{display:inline-block;margin-top:18px;color:var(--primary);font-size:13px;font-weight:700}
.coverage-feature .korea-map{min-height:0;border:0;background:radial-gradient(circle at 50% 48%,var(--glow),transparent 55%)}
.coverage-feature .korea-map svg{width:270px;height:380px}
.contact-info h2{font-size:clamp(40px,3.5vw,54px);word-break:keep-all}

@media(max-width:1080px){.showcase-section{grid-template-columns:1fr}.solution-feature,.coverage-feature{min-height:440px}.business-card{min-height:280px}.hero-visual img{right:-6%;width:82%}}
@media(max-width:780px){.hero{background-position:62% center}.hero-visual{top:432px;right:-4%;width:105vw;height:300px}.hero-visual img{top:-38px;right:-14%;width:80%;transform:none}.business-section{padding-top:72px;padding-bottom:72px}.business-grid{gap:8px}.business-card{min-height:250px}.business-card h3{margin-top:90px}.showcase-section{gap:10px;padding-top:70px;padding-bottom:70px}.solution-feature,.coverage-feature{min-height:420px}.feature-copy{width:74%;padding:38px 24px}.coverage-feature{grid-template-columns:1fr 1.15fr}.coverage-copy{padding:38px 0 30px 24px}.coverage-feature .korea-map svg{width:210px;height:310px}}
@media(max-width:520px){.business-grid{grid-template-columns:1fr}.business-card{min-height:260px}.coverage-feature{grid-template-columns:1fr;min-height:650px}.coverage-copy{padding:36px 26px 0}.coverage-feature .korea-map{min-height:360px}.feature-copy{width:88%}}