:root {
  --ink: #0a1830;
  --ink-2: #18304d;
  --blue: #1766d8;
  --cyan: #5fd7d2;
  --paper: #fff;
  --wash: #f1f7fb;
  --line: rgba(10, 24, 48, .14);
  --muted: #66788d;
  --header-h: 76px;
  --page-pad: clamp(28px, 5vw, 78px);
  --max: 1500px;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; }
html { background: #fff; }
body { color: var(--ink); font-family: "Noto Sans KR", sans-serif; -webkit-font-smoothing: antialiased; }
body.menu-open .snap-container, body.modal-open .snap-container { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
.skip-link { position: fixed; z-index: 600; left: 18px; top: 10px; padding: 11px 15px; background: var(--ink); color: #fff; transform: translateY(-150%); transition: transform .2s; }
.skip-link:focus { transform: none; }

.site-header {
  position: fixed;
  z-index: 300;
  inset: 0 0 auto;
  height: var(--header-h);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  padding: 0 var(--page-pad);
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid rgba(10,24,48,.07);
  box-shadow: 0 3px 18px rgba(10,24,48,.035);
}
.brand { display: inline-flex; align-items: center; gap: 11px; justify-self: start; font: 800 20px/1 Manrope, sans-serif; letter-spacing: -.045em; }
.brand-mark { width: 31px; height: 31px; fill: var(--ink); }
.brand-mark circle { fill: var(--cyan); }
.header-actions { justify-self: end; display: flex; align-items: center; gap: 8px; }
.menu-button { display: block; width: 46px; height: 46px; padding: 0; border: 0; background: transparent; }
.menu-button i { display: block; width: 25px; height: 1px; margin: 7px auto; background: var(--ink); transition: transform .3s; }
.menu-button[aria-expanded="true"] i:first-of-type { transform: translateY(4px) rotate(45deg); }
.menu-button[aria-expanded="true"] i:last-of-type { transform: translateY(-4px) rotate(-45deg); }

.language-picker { position: relative; }
.language-current { display: inline-flex; align-items: center; gap: 8px; min-width: 72px; height: 40px; padding: 0 7px; border: 0; background: transparent; color: #748397; font: 800 10px/1 Manrope, sans-serif; letter-spacing: .08em; }
.language-current img, .language-menu img { display: block; border-radius: 50%; object-fit: cover; box-shadow: 0 2px 7px rgba(10,24,48,.16); }
.language-current img { width: 22px; height: 22px; }
.language-current i { width: 5px; height: 5px; margin: -3px 0 0 1px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: rotate(45deg); transition: transform .2s; }
.language-current[aria-expanded="true"] i { margin-top: 3px; transform: rotate(225deg); }
.language-current:hover, .language-current:focus-visible { color: var(--ink); }
.language-current:focus-visible { outline: 2px solid var(--cyan); outline-offset: 1px; }
.language-menu { position: absolute; z-index: 380; top: calc(100% + 8px); right: 0; width: 180px; padding: 7px; border: 1px solid var(--line); background: rgba(255,255,255,.99); box-shadow: 0 20px 50px rgba(10,24,48,.17); opacity: 0; visibility: hidden; transform: translateY(-6px); transition: .2s; }
.language-menu.open { opacity: 1; visibility: visible; transform: none; }
.language-menu button { display: grid; grid-template-columns: 22px 38px 1fr; align-items: center; gap: 8px; width: 100%; height: 43px; padding: 0 9px; border: 0; background: transparent; text-align: left; color: #68798d; }
.language-menu button:hover, .language-menu button:focus-visible { outline: 0; background: var(--wash); color: var(--ink); }
.language-menu button[aria-checked="true"] { background: #edf4ff; color: var(--blue); }
.language-menu img { width: 20px; height: 20px; }
.language-menu span { font: 800 10px/1 Manrope, sans-serif; letter-spacing: .06em; }
.language-menu small { font-size: 11px; font-weight: 600; white-space: nowrap; }

.mobile-menu { position: fixed; z-index: 260; inset: var(--header-h) 0 0; display: flex; flex-direction: column; justify-content: center; padding: 7vh 9vw 5vh; background: #fff; opacity: 0; visibility: hidden; transform: translateY(-10px); transition: opacity .32s, visibility .32s, transform .32s; }
.mobile-menu.open { opacity: 1; visibility: visible; transform: none; }
.mobile-menu nav { display: flex; flex-direction: column; }
.mobile-menu nav a { display: flex; align-items: baseline; gap: 20px; padding: 16px 0; border-bottom: 1px solid var(--line); font-size: clamp(25px, 5vw, 42px); font-weight: 600; letter-spacing: -.04em; }
.mobile-menu small { color: var(--blue); font: 700 10px Manrope, sans-serif; }
.mobile-menu > p { margin: auto 0 0; color: #8290a0; font: 700 9px Manrope, sans-serif; letter-spacing: .2em; }

.snap-container { width: 100%; height: 100svh; overflow-y: auto; overflow-x: hidden; scroll-snap-type: y mandatory; scroll-behavior: smooth; overscroll-behavior-y: contain; scrollbar-width: none; }
.snap-container::-webkit-scrollbar { display: none; }
.panel { position: relative; isolation: isolate; width: 100%; height: 100svh; min-height: 0; overflow: hidden; scroll-snap-align: start; scroll-snap-stop: always; }
.panel-inner { position: relative; z-index: 3; width: min(100%, var(--max)); height: 100%; margin: 0 auto; padding: calc(var(--header-h) + 5.4vh) var(--page-pad) 5vh; }
.kicker { margin: 0; color: inherit; font: 700 10px/1.4 Manrope, sans-serif; letter-spacing: .22em; text-transform: uppercase; }

.hero-panel { background: #102841 url("images/hero-materials-v2.png") center / cover no-repeat; color: #fff; }
.panel-shade { position: absolute; z-index: 1; inset: 0; background: linear-gradient(90deg, rgba(6,21,40,.86) 0%, rgba(6,21,40,.62) 37%, rgba(6,21,40,.12) 72%, rgba(6,21,40,.18) 100%); }
.hero-content { display: flex; flex-direction: column; justify-content: center; align-items: flex-start; padding-top: calc(var(--header-h) + 3vh); padding-bottom: 7vh; }
.hero-content .kicker { margin-bottom: 25px; color: #d8f8f6; }
.hero-content h1 { margin: 0; max-width: 940px; font-family: Manrope, sans-serif; font-size: clamp(55px, 7vw, 116px); line-height: .91; letter-spacing: -.06em; }
.hero-content h1 span { display: block; color: transparent; -webkit-text-stroke: 1.2px rgba(255,255,255,.92); font-weight: 500; }
.hero-content h1 strong { display: block; color: #fff; font-weight: 800; }
.hero-copy { max-width: 575px; margin: 28px 0 0; color: rgba(255,255,255,.8); font-size: clamp(14px, 1.1vw, 17px); line-height: 1.85; }
.outline-button { display: inline-flex; align-items: center; justify-content: space-between; gap: 45px; min-width: 205px; min-height: 58px; margin-top: 30px; padding: 0 21px; border: 1px solid rgba(255,255,255,.68); background: rgba(8,25,45,.16); color: #fff; font-size: 13px; font-weight: 700; transition: background .25s, color .25s, transform .25s; }
.outline-button:hover { background: #fff; color: var(--ink); transform: translateY(-2px); }
.outline-button b { font-size: 18px; font-weight: 400; }
.scroll-cue { position: absolute; z-index: 4; left: 50%; bottom: 28px; display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 0; border: 0; background: transparent; color: #fff; transform: translateX(-50%); font: 700 10px Manrope, sans-serif; letter-spacing: .08em; }
.scroll-cue i { position: relative; display: block; width: 22px; height: 34px; border: 1px solid rgba(255,255,255,.8); border-radius: 12px; }
.scroll-cue i::after { content: ""; position: absolute; top: 7px; left: 50%; width: 2px; height: 7px; border-radius: 2px; background: #fff; transform: translateX(-50%); animation: scroll-dot 1.5s infinite; }
@keyframes scroll-dot { 0% { opacity: 0; transform: translate(-50%,0); } 35% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%,10px); } }

.solutions-panel { background: linear-gradient(105deg, #e8f2f8 0%, #fff 48%, #f7fbfd 100%); }
.solutions-orbit { position: absolute; right: -10vw; bottom: -44vw; width: 70vw; height: 70vw; border: 1px solid rgba(24,71,110,.13); border-radius: 50%; box-shadow: 0 0 0 4vw rgba(23,102,216,.02), 0 0 0 8vw rgba(95,215,210,.025); }
.solutions-orbit::before, .solutions-orbit::after { content: ""; position: absolute; border-radius: 50%; border: 1px solid rgba(24,71,110,.12); }
.solutions-orbit::before { inset: 16%; }
.solutions-orbit::after { inset: 30%; }
.solutions-content { display: flex; flex-direction: column; padding-top: calc(var(--header-h) + 4.6vh); padding-bottom: 3vh; }
.section-heading { text-align: center; }
.section-heading .kicker { margin-bottom: 8px; color: var(--blue); }
.section-heading h2 { margin: 0; font: 800 clamp(40px, 4vw, 68px)/1 Manrope, sans-serif; letter-spacing: -.045em; }
.section-heading > p:last-child { margin: 13px auto 0; color: var(--muted); font-size: clamp(13px, 1vw, 16px); }
.solution-track { position: relative; z-index: 2; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(260px, calc((100% - 60px) / 3.35)); gap: 20px; margin-top: 4.2vh; overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth; scrollbar-width: none; }
.solution-track::-webkit-scrollbar { display: none; }
.solution-card { position: relative; height: clamp(270px, 40vh, 360px); padding: 24px; border: 1px solid rgba(10,24,48,.16); background: rgba(255,255,255,.84); scroll-snap-align: start; overflow: hidden; transition: transform .3s, border-color .3s, box-shadow .3s; }
.solution-card:hover { transform: translateY(-5px); border-color: rgba(23,102,216,.4); box-shadow: 0 20px 50px rgba(10,24,48,.1); }
.solution-card > span { position: absolute; top: 20px; right: 22px; color: #7b8ea4; font: 700 10px Manrope, sans-serif; }
.solution-card small { display: block; margin-top: 18px; color: var(--blue); font: 700 9px Manrope, sans-serif; letter-spacing: .14em; }
.solution-card h3 { margin: 8px 0 7px; font-size: clamp(21px, 1.8vw, 29px); letter-spacing: -.04em; }
.solution-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.card-visual { position: relative; height: 49%; min-height: 115px; border-bottom: 1px solid var(--line); overflow: hidden; }
.card-visual i { position: absolute; display: block; border-radius: 50%; }
.visual-source i { border: 1px solid rgba(23,102,216,.35); }
.visual-source i:nth-child(1) { inset: 17% 32%; }
.visual-source i:nth-child(2) { width: 12px; height: 12px; left: 21%; top: 24%; background: var(--cyan); }
.visual-source i:nth-child(3) { width: 17px; height: 17px; right: 20%; bottom: 23%; background: var(--blue); }
.visual-function i { background: linear-gradient(135deg, var(--blue), var(--cyan)); opacity: .85; }
.visual-function i:nth-child(1) { width: 86px; height: 86px; left: 17%; top: 12%; }
.visual-function i:nth-child(2) { width: 52px; height: 52px; left: 48%; top: 36%; }
.visual-function i:nth-child(3) { width: 25px; height: 25px; right: 12%; top: 19%; }
.visual-custom i { width: 2px; height: 115%; top: -8%; background: rgba(23,102,216,.5); border-radius: 0; transform: rotate(36deg); }
.visual-custom i:nth-child(1) { left: 28%; }.visual-custom i:nth-child(2) { left: 50%; }.visual-custom i:nth-child(3) { left: 72%; }
.visual-supply i { width: 15px; height: 15px; background: var(--ink); box-shadow: 0 0 0 8px rgba(10,24,48,.08); }
.visual-supply i:nth-child(1) { left: 16%; top: 52%; }.visual-supply i:nth-child(2) { left: 48%; top: 20%; background: var(--blue); }.visual-supply i:nth-child(3) { right: 17%; bottom: 24%; background: var(--cyan); }
.visual-supply::before, .visual-supply::after { content: ""; position: absolute; height: 1px; background: rgba(10,24,48,.3); transform-origin: left; }
.visual-supply::before { width: 42%; left: 20%; top: 53%; transform: rotate(-24deg); }.visual-supply::after { width: 40%; left: 51%; top: 25%; transform: rotate(37deg); }
.track-controls { display: flex; justify-content: center; gap: 10px; margin-top: auto; padding-top: 2vh; }
.track-controls button { width: 52px; height: 52px; border: 0; border-radius: 50%; background: var(--ink); color: #fff; font-size: 20px; transition: background .2s, transform .2s; }
.track-controls button:hover { background: var(--blue); transform: scale(1.05); }

.inquiry-panel { background: #0b213a url("images/inquiry-lab-v2.png") center / cover no-repeat; color: #fff; }
.inquiry-shade { position: absolute; z-index: 1; inset: 0; background: linear-gradient(90deg, rgba(4,16,31,.78), rgba(4,16,31,.48) 55%, rgba(4,16,31,.35)); }
.inquiry-content { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding-top: calc(var(--header-h) + 2vh); }
.inquiry-content .kicker { color: #b9f3ee; }
.inquiry-content h2 { max-width: 920px; margin: 18px 0 12px; font-size: clamp(38px, 5vw, 78px); line-height: 1.15; letter-spacing: -.055em; }
.inquiry-content > p:not(.kicker) { margin: 0; color: rgba(255,255,255,.8); font-size: clamp(14px,1.2vw,18px); }
.inquiry-content .outline-button { margin-top: 38px; }

.about-panel { background: #eef7fc url("images/about-network-v2.png") center / cover no-repeat; }
.about-shade { position: absolute; z-index: 1; inset: 0; background: linear-gradient(90deg, rgba(255,255,255,.62), rgba(255,255,255,.17)); }
.about-content { display: flex; flex-direction: column; padding-top: calc(var(--header-h) + 3.5vh); padding-bottom: 128px; }
.about-content .section-heading .kicker { color: var(--blue); }
.about-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(18px, 3vw, 48px); margin-top: 6vh; }
.about-grid article { position: relative; min-width: 0; padding: 20px 0; border-top: 4px solid var(--ink); }
.about-grid article > span { position: absolute; right: 0; top: -30px; color: var(--blue); font: 800 10px Manrope, sans-serif; }
.about-grid small { font: 800 10px Manrope, sans-serif; letter-spacing: .08em; }
.about-grid h3 { margin: 22px 0 9px; font-size: clamp(22px, 2vw, 31px); font-weight: 500; letter-spacing: -.04em; }
.about-grid p { margin: 0; color: #52667e; font-size: 13px; line-height: 1.7; }
footer { position: absolute; z-index: 5; inset: auto 0 0; min-height: 108px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 42px; padding: 22px var(--page-pad); background: rgba(9,23,44,.94); color: #fff; }
footer .footer-brand { color: #fff; }
footer .footer-brand .brand-mark { fill: #fff; }
footer > div { display: flex; align-items: center; gap: 25px; color: rgba(255,255,255,.68); font-size: 11px; }
footer > div p, footer > p { margin: 0; }
footer > div a { color: #fff; font-weight: 600; }
footer > p { color: rgba(255,255,255,.54); font: 600 9px Manrope, sans-serif; letter-spacing: .05em; }

.section-nav { position: fixed; z-index: 220; right: 23px; top: 50%; display: flex; flex-direction: column; align-items: flex-end; gap: 9px; transform: translateY(-50%); }
.section-nav button { display: flex; align-items: center; justify-content: flex-end; gap: 10px; height: 16px; padding: 0; border: 0; background: transparent; color: rgba(31,50,70,.48); }
.section-nav button span { opacity: 0; font: 800 11px Manrope, sans-serif; transform: translateX(8px); transition: .25s; }
.section-nav button i { width: 13px; height: 13px; background: currentColor; clip-path: polygon(25% 7%,75% 7%,100% 50%,75% 93%,25% 93%,0 50%); transition: transform .25s, color .25s; }
.section-nav button.active { color: var(--ink); }
.section-nav button.active span { opacity: 1; transform: none; }
.section-nav button.active i { transform: scale(1.1); }

.inquiry-modal { position: fixed; z-index: 500; inset: 0; display: grid; place-items: center; padding: 20px; opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s; }
.inquiry-modal.open { opacity: 1; visibility: visible; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(5,16,30,.72); backdrop-filter: blur(8px); }
.modal-card { position: relative; z-index: 1; width: min(760px, 100%); max-height: calc(100svh - 40px); overflow-y: auto; padding: clamp(28px, 5vw, 56px); background: #fff; box-shadow: 0 30px 90px rgba(0,0,0,.3); }
.modal-close { position: absolute; right: 20px; top: 14px; width: 42px; height: 42px; border: 0; background: transparent; font: 300 31px/1 Manrope, sans-serif; }
.modal-card .kicker { color: var(--blue); }
.modal-card h2 { margin: 8px 0 28px; font-size: clamp(31px,4vw,50px); letter-spacing: -.05em; }
.modal-card form { display: flex; flex-direction: column; gap: 15px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.modal-card label { display: flex; flex-direction: column; gap: 7px; color: #53657a; font-size: 11px; font-weight: 700; }
.modal-card input, .modal-card select, .modal-card textarea { width: 100%; border: 0; border-bottom: 1px solid #bcc8d3; border-radius: 0; outline: 0; background: #f7f9fb; padding: 12px 13px; font-size: 14px; transition: border-color .2s; }
.modal-card input:focus, .modal-card select:focus, .modal-card textarea:focus { border-color: var(--blue); }
.modal-card textarea { resize: vertical; }
.form-note { margin: 0; color: #7b8999; font-size: 10px; }
.submit-button { display: flex; align-items: center; justify-content: space-between; min-height: 55px; margin-top: 5px; padding: 0 20px; border: 0; background: var(--ink); color: #fff; font-size: 13px; font-weight: 700; }
.submit-button:hover { background: var(--blue); }
.toast { position: fixed; z-index: 700; left: 50%; bottom: 24px; padding: 13px 20px; background: var(--ink); color: #fff; font-size: 12px; opacity: 0; transform: translate(-50%,20px); transition: .25s; pointer-events: none; }
.toast.show { opacity: 1; transform: translate(-50%,0); }

@media (max-width: 900px) {
  :root { --header-h: 68px; --page-pad: 22px; }
  .site-header { grid-template-columns: 1fr auto; }
  .brand { font-size: 17px; gap: 8px; }
  .brand-mark { width: 27px; height: 27px; }
  .header-actions { gap: 2px; }
  .language-current { min-width: 68px; }
  .panel-inner { padding-left: 22px; padding-right: 22px; }
  .hero-panel { background-position: 63% center; }
  .panel-shade { background: linear-gradient(90deg, rgba(6,21,40,.89), rgba(6,21,40,.6) 75%, rgba(6,21,40,.45)); }
  .hero-content { justify-content: center; padding-bottom: 12vh; }
  .hero-content .kicker { margin-bottom: 18px; }
  .hero-content h1 { font-size: clamp(45px, 13vw, 74px); line-height: .94; }
  .hero-copy { max-width: 90%; margin-top: 22px; font-size: 13px; }
  .outline-button { min-width: 185px; min-height: 52px; margin-top: 24px; }
  .scroll-cue { bottom: 18px; }
  .solutions-content { padding-top: calc(var(--header-h) + 3vh); padding-bottom: 2.5vh; }
  .section-heading h2 { font-size: clamp(35px, 10vw, 52px); }
  .section-heading > p:last-child { max-width: 90%; font-size: 12px; }
  .solution-track { grid-auto-columns: 78vw; gap: 14px; margin-top: 3vh; }
  .solution-card { height: min(42vh, 340px); min-height: 265px; padding: 19px; }
  .solution-card small { margin-top: 12px; }
  .track-controls { padding-top: 1.5vh; }
  .track-controls button { width: 45px; height: 45px; }
  .inquiry-panel { background-position: 63% center; }
  .inquiry-shade { background: rgba(4,16,31,.62); }
  .inquiry-content h2 { font-size: clamp(36px, 10vw, 57px); }
  .inquiry-content > p:not(.kicker) { max-width: 90%; font-size: 13px; line-height: 1.7; }
  .about-panel { background-position: 62% center; }
  .about-content { padding-top: calc(var(--header-h) + 2.4vh); padding-bottom: 94px; }
  .about-grid { grid-template-columns: 1fr 1fr; gap: 15px 22px; margin-top: 3.4vh; }
  .about-grid article { padding: 11px 0 6px; border-top-width: 3px; }
  .about-grid article > span { top: -19px; }
  .about-grid small { font-size: 8px; }
  .about-grid h3 { margin: 7px 0 4px; font-size: clamp(17px, 4.8vw, 23px); }
  .about-grid p { font-size: 10px; line-height: 1.45; }
  footer { min-height: 82px; grid-template-columns: auto 1fr; gap: 18px; padding: 15px 22px; }
  footer .footer-brand { font-size: 14px; }
  footer .footer-brand .brand-mark { width: 23px; height: 23px; }
  footer > div { display: block; font-size: 9px; line-height: 1.7; }
  footer > div p { display: none; }
  footer > p { display: none; }
  .section-nav { right: 9px; gap: 7px; }
  .section-nav button span { display: none; }
  .section-nav button i { width: 10px; height: 10px; }
  .field-row { grid-template-columns: 1fr; }
  .modal-card { padding: 34px 24px 26px; }
}

@media (max-height: 700px) and (min-width: 901px) {
  .solutions-content { padding-top: calc(var(--header-h) + 2.5vh); }
  .solution-track { margin-top: 2.5vh; }
  .solution-card { height: 34vh; min-height: 240px; }
  .card-visual { height: 42%; }
  .about-content { padding-top: calc(var(--header-h) + 2vh); }
  .about-grid { margin-top: 3.5vh; }
  footer { min-height: 90px; padding-block: 15px; }
}

@media (max-height: 690px) and (max-width: 900px) {
  .hero-content h1 { font-size: clamp(42px, 11vw, 62px); }
  .hero-copy { line-height: 1.55; }
  .scroll-cue { display: none; }
  .solutions-content { padding-top: calc(var(--header-h) + 1.8vh); }
  .solution-track { margin-top: 2vh; }
  .solution-card { height: 37vh; min-height: 230px; }
  .track-controls { padding-top: 8px; }
  .about-content .section-heading > p:last-child { display: none; }
  .about-grid { margin-top: 2.3vh; }
  .about-grid p { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .snap-container { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}