:root {
  --bg: #07130f;
  --bg-soft: #0c1b16;
  --surface: #10231c;
  --surface-2: #152a22;
  --line: rgba(223, 244, 230, 0.16);
  --text: #ecf4ef;
  --muted: #9cad9f;
  --accent: #8df5b3;
  --accent-2: #b7ff63;
  --dark-text: #07130f;
  --sans: "Noto Sans KR", sans-serif;
  --mono: "IBM Plex Mono", monospace;
  --max: 1280px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: var(--sans);
  word-break: keep-all;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
.noise {
  position: fixed; inset: 0; z-index: 99; pointer-events: none; opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.65'/%3E%3C/svg%3E");
}
.section-shell { width: min(calc(100% - 72px), var(--max)); margin-inline: auto; }
.site-header {
  position: fixed; z-index: 50; inset: 0 0 auto; height: 78px; padding: 0 max(36px, calc((100vw - var(--max)) / 2));
  display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s;
}
.site-header.scrolled { background: rgba(7, 19, 15, .82); backdrop-filter: blur(18px); border-color: var(--line); }
.brand { display: flex; align-items: center; gap: 12px; font: 600 13px var(--mono); letter-spacing: .08em; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; color: var(--dark-text); background: var(--accent); border-radius: 3px; }
.desktop-nav { display: flex; gap: 34px; font: 500 12px var(--mono); text-transform: uppercase; }
.desktop-nav a { color: var(--muted); transition: color .2s; }
.desktop-nav a:hover { color: var(--accent); }
.menu-button { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: transparent; }
.menu-button span { display: block; width: 18px; height: 1px; margin: 5px auto; background: var(--text); }

.hero { min-height: 100svh; padding-top: 170px; display: grid; grid-template-columns: 1.12fr .88fr; gap: 70px; align-items: center; position: relative; }
.hero > * { min-width: 0; }
.hero::before { content: ""; position: absolute; width: 520px; height: 520px; top: 5%; right: 5%; background: radial-gradient(circle, rgba(141,245,179,.12), transparent 68%); pointer-events: none; }
.eyebrow, .section-kicker, .mono-label { font: 500 11px var(--mono); letter-spacing: .14em; color: var(--accent); }
.eyebrow { display: flex; align-items: center; gap: 9px; }
.status-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 5px rgba(141,245,179,.1); animation: pulse 2s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 9px rgba(141,245,179,0); } }
.hero h1 { margin: 30px 0 26px; font-size: clamp(46px, 6.2vw, 88px); line-height: 1.12; letter-spacing: -.055em; font-weight: 600; }
.hero h1 span { color: var(--accent); }
.mobile-break { display: none; }
.hero-description { max-width: 670px; margin: 0; color: #b8c7bd; font-size: 18px; line-height: 1.9; }
.hero-description strong { color: var(--text); font-weight: 600; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 42px; }
.button { display: inline-flex; gap: 48px; align-items: center; justify-content: space-between; min-width: 210px; padding: 17px 20px; border: 1px solid var(--line); font: 500 13px var(--mono); transition: transform .2s, background .2s, color .2s; }
.button:hover { transform: translateY(-3px); }
.button-primary { background: var(--accent); color: var(--dark-text); border-color: var(--accent); }
.button-secondary:hover { background: var(--surface); }
.terminal-card { align-self: center; overflow: hidden; border: 1px solid rgba(141,245,179,.28); background: rgba(10,28,21,.72); box-shadow: 0 36px 90px rgba(0,0,0,.32); backdrop-filter: blur(12px); transform: perspective(1200px) rotateY(-3deg); }
.terminal-top { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 14px 16px; border-bottom: 1px solid var(--line); color: var(--muted); font: 10px var(--mono); }
.terminal-top > :last-child { text-align: right; color: var(--accent); }
.terminal-dots { display: flex; gap: 6px; }.terminal-dots i { width: 7px; height: 7px; border-radius: 50%; background: #496358; }.terminal-dots i:first-child { background: var(--accent); }
.terminal-body { padding: 28px; font: 12px/1.7 var(--mono); color: #c8d5cc; }
.prompt, .healthy { color: var(--accent); }
.terminal-table { display: grid; grid-template-columns: 1.4fr 1fr .7fr; padding: 16px; margin: 10px 0 26px; background: rgba(141,245,179,.05); border-left: 2px solid var(--accent); }
.terminal-table span { color: #658074; font-size: 10px; }.terminal-table b { font-weight: 500; margin-top: 6px; }
.system-line { display: flex; align-items: center; gap: 9px; color: var(--accent); }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 28px 0; background: var(--line); border: 1px solid var(--line); }
.metrics div { padding: 16px 12px; background: #0a1a14; }.metrics span { display: block; color: #668075; font-size: 9px; }.metrics strong { display: block; margin-top: 6px; color: var(--text); font-size: 13px; }
.packet-flow { display: flex; align-items: center; justify-content: space-between; font-size: 8px; color: var(--muted); }
.packet-flow i { flex: 1; height: 1px; margin: 0 7px; background: linear-gradient(90deg, var(--accent), transparent); position: relative; }
.packet-flow i::after { content: ">"; position: absolute; right: 0; top: -7px; color: var(--accent); }
.hero-meta { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); margin-top: 30px; }
.hero-meta div { padding: 22px 0; border-right: 1px solid var(--line); }.hero-meta div + div { padding-left: 28px; }.hero-meta span { display: block; color: #668075; font: 10px var(--mono); }.hero-meta strong { display: block; margin-top: 7px; font: 500 13px var(--mono); }

.marquee { overflow: hidden; border-block: 1px solid var(--line); background: var(--accent); color: var(--dark-text); }
.marquee-track { display: flex; width: max-content; padding: 15px 0; animation: marquee 26s linear infinite; }
.marquee span { padding: 0 26px; font: 600 12px var(--mono); letter-spacing: .08em; }.marquee i { font-style: normal; }
@keyframes marquee { to { transform: translateX(-50%); } }

.intro-section, .skills { display: grid; grid-template-columns: 160px 1fr; padding-block: 150px; }
.section-index { color: var(--accent); font: 500 12px/1.7 var(--mono); }.section-index span { color: #60776c; writing-mode: vertical-rl; margin-top: 15px; letter-spacing: .12em; }
.intro-content h2, .section-heading h2, .contact h2 { margin: 18px 0 44px; font-size: clamp(38px, 5vw, 68px); line-height: 1.18; letter-spacing: -.045em; font-weight: 500; }
.intro-content h2 em { color: var(--accent); font-style: normal; }
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; padding-top: 35px; border-top: 1px solid var(--line); }
.intro-grid p, .section-heading > p { color: var(--muted); font-size: 16px; line-height: 1.9; }

.projects { padding-block: 130px; border-top: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 50px; margin-bottom: 64px; }
.section-heading h2 { margin-bottom: 0; }.section-heading > p { max-width: 410px; margin-bottom: 6px; }
.project-card { border: 1px solid var(--line); background: var(--bg-soft); overflow: hidden; transition: border-color .3s, transform .3s; }
.project-card:hover { border-color: rgba(141,245,179,.5); transform: translateY(-4px); }
.project-featured { display: grid; grid-template-columns: 1fr 1fr; }
.project-visual { min-height: 630px; position: relative; background-color: #c7f48b; color: var(--dark-text); overflow: hidden; }
.topology-visual { background-image: linear-gradient(rgba(7,19,15,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(7,19,15,.08) 1px, transparent 1px); background-size: 34px 34px; }
.visual-label { display: flex; justify-content: space-between; padding: 20px; font: 600 10px var(--mono); }
.cloud { position: absolute; left: 10%; width: 80%; padding: 22px; border: 1px solid rgba(7,19,15,.45); background: rgba(236,244,239,.45); backdrop-filter: blur(4px); }
.cloud small { font: 600 10px var(--mono); }.cloud-onprem { top: 16%; }.cloud-aws { bottom: 14%; }
.node-group { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; margin: 18px 0; }.node-group b { padding: 18px 5px; border: 1px solid rgba(7,19,15,.25); text-align: center; font: 500 10px var(--mono); background: rgba(255,255,255,.22); }
.service-pill { font: 500 10px var(--mono); }
.vpn-line { position: absolute; left: 50%; top: 48%; height: 13%; border-left: 1px dashed var(--dark-text); }.vpn-line::before,.vpn-line::after { content: ""; position: absolute; left: -4px; width: 7px; height: 7px; background: var(--dark-text); border-radius: 50%; }.vpn-line::after { bottom: 0; }.vpn-line span { position: absolute; white-space: nowrap; left: 12px; top: 40%; font: 600 9px var(--mono); }
.visual-metrics { position: absolute; inset: auto 20px 20px auto; display: flex; align-items: end; gap: 3px; height: 50px; }.visual-metrics i { display: block; width: 4px; background: var(--dark-text); }.visual-metrics i:nth-child(3n+1){height:30%}.visual-metrics i:nth-child(3n+2){height:80%}.visual-metrics i:nth-child(3n){height:55%}
.project-content { padding: 34px; display: grid; grid-template-columns: 55px 1fr; }
.project-number { font: 500 12px var(--mono); color: var(--accent); }
.project-meta { display: flex; justify-content: space-between; gap: 12px; color: #6f887c; font: 500 9px var(--mono); letter-spacing: .08em; }
.project-copy h3, .compact-copy h3 { margin: 28px 0 22px; font-size: clamp(30px, 3vw, 44px); line-height: 1.25; letter-spacing: -.04em; font-weight: 500; }
.project-copy > p, .compact-copy > p { color: var(--muted); line-height: 1.85; }
.impact-list { list-style: none; padding: 0; margin: 30px 0; border-top: 1px solid var(--line); }
.impact-list li { display: grid; grid-template-columns: 34px 1fr; gap: 10px; padding: 14px 0; border-bottom: 1px solid var(--line); color: #c4d1c8; font-size: 13px; line-height: 1.6; }.impact-list strong { color: var(--accent); font: 500 10px var(--mono); }
.tech-list { display: flex; flex-wrap: wrap; gap: 7px; }.tech-list span { padding: 7px 9px; border: 1px solid var(--line); color: #a8b9ae; font: 10px var(--mono); }
.text-link { display: inline-flex; gap: 40px; margin-top: 32px; padding-bottom: 7px; border-bottom: 1px solid var(--accent); color: var(--accent); font: 500 12px var(--mono); }
.project-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 22px; }
.compact-visual { height: 330px; position: relative; overflow: hidden; background: #152a22; border-bottom: 1px solid var(--line); }
.visual-code { position: absolute; top: 18px; left: 18px; z-index: 2; color: var(--accent); font: 500 10px var(--mono); }
.compact-copy { padding: 30px; }.compact-copy h3 { font-size: 30px; }.compact-copy .tech-list { margin-top: 24px; }
.cluster-visual { background-image: radial-gradient(circle at center, rgba(141,245,179,.16), transparent 45%), linear-gradient(rgba(141,245,179,.05) 1px, transparent 1px), linear-gradient(90deg,rgba(141,245,179,.05) 1px,transparent 1px); background-size: auto, 30px 30px, 30px 30px; }
.cluster-center { position: absolute; inset: 50% auto auto 50%; transform: translate(-50%,-50%); display: grid; place-items: center; width: 80px; height: 80px; border: 1px solid var(--accent); border-radius: 50%; color: var(--accent); font: 10px var(--mono); }
.orbit { position: absolute; inset: 50% auto auto 50%; transform: translate(-50%,-50%); border: 1px dashed #547166; border-radius: 50%; }.orbit-one { width: 190px; height: 190px; }.orbit-two { width: 280px; height: 280px; }.orbit i { position: absolute; width: 18px; height: 18px; border: 1px solid var(--accent); background: var(--surface); }.orbit i:nth-child(1){left:45%;top:-9px}.orbit i:nth-child(2){right:-9px;top:48%}.orbit i:nth-child(3){left:10%;bottom:8%}.orbit i:nth-child(4){left:-9px;top:30%}
.swarm-visual { padding: 65px 12%; display: flex; flex-direction: column; justify-content: center; gap: 28px; background-image: linear-gradient(120deg, rgba(183,255,99,.08), transparent); }.tier { display:flex; justify-content:center; gap:30px; position:relative}.tier::after { content:""; position:absolute; top:100%; height:28px; border-left:1px dashed #587368}.tier:last-child::after{display:none}.tier span { min-width: 86px; padding: 13px; border: 1px solid var(--accent); color: var(--accent); text-align:center; font:10px var(--mono); }.tier.double span { min-width: 110px; }.tier.triple span { min-width: 72px; border-color:#587368; color:#a9b9af; }
.wide { grid-column: 1 / -1; display: grid; grid-template-columns: .8fr 1.2fr; }.wide .compact-visual { height: 100%; min-height: 390px; border: 0; border-right: 1px solid var(--line); }
.robot-visual { background: #b8e9d0; color: var(--dark-text); }.route-map { position:absolute; inset:20%; background-image: linear-gradient(rgba(7,19,15,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(7,19,15,.12) 1px,transparent 1px);background-size:24px 24px;border:1px solid rgba(7,19,15,.3)}
.point { position:absolute;width:16px;height:16px;border-radius:50%;background:var(--dark-text)}.point::after{content:"";position:absolute;inset:-6px;border:1px solid var(--dark-text);border-radius:50%}.point.start{left:12%;bottom:14%}.point.end{right:10%;top:12%}.route-path{position:absolute;left:15%;bottom:18%;width:72%;height:64%;border-left:2px dashed var(--dark-text);border-top:2px dashed var(--dark-text);transform:skewX(-25deg)}.robot{position:absolute;left:50%;top:43%;width:54px;height:36px;display:grid;place-items:center;background:var(--dark-text);color:var(--accent);font:600 9px var(--mono)}
.award-inline { margin-top: 25px; padding: 14px; border-left: 2px solid var(--accent); background: rgba(141,245,179,.05); color: #c8d7ce; font-size: 12px; line-height: 1.7; }

.foundations { padding-block: 140px; }
.foundation-list { border-top: 1px solid var(--line); }
.foundation-item { display: grid; grid-template-columns: 55px 1.2fr 1fr .9fr; gap: 28px; align-items: center; padding: 36px 0; border-bottom: 1px solid var(--line); }
.foundation-number { color: var(--accent); font: 11px var(--mono); }.foundation-item h3 { margin: 10px 0 0; font-size: 20px; font-weight: 500; }.foundation-item > p { color: var(--muted); font-size: 13px; line-height: 1.8; }

.skills { border-top: 1px solid var(--line); }.skills .section-heading { margin-bottom: 20px; }
.skill-row { display: grid; grid-template-columns: 50px 260px 1fr; gap: 20px; padding: 26px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.skill-row > span { color: var(--accent); font: 10px var(--mono); }.skill-row h3 { margin: 0; font-size: 17px; font-weight: 500; }.skill-row p { margin: 0; color: var(--muted); font: 12px/1.8 var(--mono); }
.more-work { padding-block: 110px; border-top: 1px solid var(--line); }
.more-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; margin-top: 38px; background: var(--line); border: 1px solid var(--line); }
.more-grid article { min-height: 250px; padding: 28px; background: var(--bg); }.more-grid span { color: var(--accent); font: 9px var(--mono); }.more-grid h3 { margin: 55px 0 15px; font-size: 20px; font-weight: 500; }.more-grid p { color: var(--muted); font-size: 13px; line-height: 1.8; }

.contact { width: 100%; max-width: none; padding: 120px max(36px, calc((100vw - var(--max)) / 2)) 28px; background: var(--accent); color: var(--dark-text); }
.contact .section-kicker { color: var(--dark-text); opacity: .65; }.contact h2 { font-size: clamp(50px,8vw,110px); margin-bottom: 80px; }
.contact-bottom { display: flex; align-items: end; justify-content: space-between; gap: 40px; padding: 35px 0; border-top: 1px solid rgba(7,19,15,.3); }.contact-bottom p { line-height: 1.8; }.contact-bottom a { font: 500 clamp(17px,2.4vw,30px) var(--mono); border-bottom: 2px solid var(--dark-text); padding-bottom: 8px; }
.footer-line { display: flex; justify-content: space-between; padding-top: 28px; margin-top: 80px; border-top: 1px solid rgba(7,19,15,.3); font: 500 10px var(--mono); }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}.marquee-track{animation:none}.status-dot{animation:none} }
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 140px; }.terminal-card { transform:none; max-width:680px; }.hero-meta { margin-top:0; }
  .project-featured { grid-template-columns:1fr; }.project-visual { min-height:520px; }.foundation-item { grid-template-columns:40px 1fr; }.foundation-item > p,.foundation-item > .tech-list { grid-column:2; }
  .skill-row { grid-template-columns:40px 210px 1fr; }.wide { grid-template-columns:1fr; }.wide .compact-visual { min-height:330px;border-right:0;border-bottom:1px solid var(--line) }
}
@media (max-width: 720px) {
  .section-shell { width:min(calc(100% - 36px),var(--max)); }.site-header { height:66px;padding:0 18px }.desktop-nav { display:none; position:absolute; left:0; right:0; top:65px; padding:24px; flex-direction:column; background:var(--bg);border-bottom:1px solid var(--line) }.desktop-nav.open{display:flex}.menu-button{display:block}
  .hero { padding-top:110px;gap:48px }.hero h1 { font-size:clamp(39px,11.2vw,54px); word-break:normal }.mobile-break{display:inline}.hero-description{font-size:15px;word-break:normal;overflow-wrap:anywhere}.hero-actions{display:grid;grid-template-columns:1fr}.button{width:100%;min-width:0}.terminal-body{padding:20px}.terminal-table{font-size:10px;overflow:hidden}.metrics{grid-template-columns:1fr}.hero-meta{grid-template-columns:1fr}.hero-meta div{border-right:0;border-bottom:1px solid var(--line)}.hero-meta div+div{padding-left:0}
  .intro-section,.skills { grid-template-columns:1fr;padding-block:90px}.section-index{display:none}.intro-grid{grid-template-columns:1fr;gap:15px}.section-heading{display:block;margin-bottom:40px}.section-heading>p{margin-top:24px}.intro-content h2,.section-heading h2{font-size:38px}
  .projects,.foundations{padding-block:90px}.project-content{grid-template-columns:1fr}.project-number{margin-bottom:20px}.project-visual{min-height:460px}.project-grid{grid-template-columns:1fr}.wide{grid-column:auto}.compact-visual{height:290px}.project-copy h3,.compact-copy h3{font-size:27px}.project-meta{flex-direction:column}
  .foundation-item{grid-template-columns:30px 1fr;gap:15px}.foundation-item>p,.foundation-item>.tech-list{grid-column:2}.skill-row{grid-template-columns:28px 1fr}.skill-row p{grid-column:2}.more-grid{grid-template-columns:1fr}.contact{padding:90px 18px 24px}.contact h2{font-size:48px}.contact-bottom{align-items:flex-start;flex-direction:column}.footer-line{gap:22px;flex-wrap:wrap}.footer-line span:nth-child(2){display:none}
}