:root{
  --paper:#F6F7FA; --surface:#FFFFFF; --ink:#0E1320; --steel:#5A6478; --line:#D9DEE8;
  --blue:#1E63E9; --blue-deep:#154BB5; --tint:#E8EFFD; --amber:#E0A100; --amber-bg:#FFF6D6;
  --ok:#1A7F4B; --err:#C0392B;
  --trace:#1E63E9; --grid:#E3E8F2;
  --mono:'IBM Plex Mono',ui-monospace,Menlo,Consolas,monospace;
  --disp:'Montserrat','Gothic A1','Apple SD Gothic Neo','Malgun Gothic',sans-serif;
  --body:'IBM Plex Sans KR','Apple SD Gothic Neo','Malgun Gothic',system-ui,sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#0C1017; --surface:#141A25; --ink:#E7EBF3; --steel:#9AA5B8; --line:#26303F;
    --blue:#4D8BFF; --blue-deep:#7AA7FF; --tint:#16233B; --amber:#F2C14E; --amber-bg:#3A2E0A;
    --ok:#4ADE80; --err:#FF7A6B; --trace:#4D8BFF; --grid:#1F2837;
  }
}
:root[data-theme="dark"]{
  --paper:#0C1017; --surface:#141A25; --ink:#E7EBF3; --steel:#9AA5B8; --line:#26303F;
  --blue:#4D8BFF; --blue-deep:#7AA7FF; --tint:#16233B; --amber:#F2C14E; --amber-bg:#3A2E0A;
  --ok:#4ADE80; --err:#FF7A6B; --trace:#4D8BFF; --grid:#1F2837;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto} *{animation:none!important;transition:none!important}}
a{color:inherit}
h1,h2,h3{font-family:var(--disp);font-weight:800;line-height:1.15;margin:0;text-wrap:balance;letter-spacing:-.01em}
h1{font-size:clamp(34px,5vw,58px)}
h2{font-size:clamp(26px,3.2vw,38px)}
h3{font-size:19px;font-weight:700}
p{margin:0}
img{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono)}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);font-weight:500}
.lead{font-size:18px;color:var(--steel);max-width:62ch}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:4px}

.key{display:inline-flex;align-items:center;justify-content:center;height:1.55em;min-width:1.55em;padding:0 .45em;border:2px solid var(--blue);border-radius:.32em;color:var(--blue);font-family:var(--disp);font-weight:800;line-height:1;background:var(--surface);vertical-align:middle}
.key.dark{color:var(--ink);border-color:var(--blue)}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.logo .caps{display:flex;gap:4px;font-size:15px}
.logo .word{font-family:var(--disp);font-weight:800;font-size:22px;letter-spacing:-.02em;line-height:1}
.logo .word small{display:block;font-size:9px;letter-spacing:.22em;font-weight:600;color:var(--steel);margin-top:2px}

.nav{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px}
.nav ul{display:flex;gap:26px;list-style:none;margin:0;padding:0}
.nav li a{text-decoration:none;font-size:14px;font-weight:500;color:var(--steel)}
.nav li a:hover{color:var(--ink)}
.nav li a kbd{font-family:var(--mono);font-size:11px;color:var(--blue);margin-right:6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:8px;text-decoration:none;font-weight:600;font-size:15px;border:2px solid var(--blue);transition:transform .15s;cursor:pointer;font-family:inherit}
.btn:hover{transform:translateY(-1px)}
.btn.fill{background:var(--blue);color:#fff}
.btn.ghost{color:var(--blue);background:transparent}
.btn.sm{padding:8px 14px;font-size:14px}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}
@media (max-width:820px){.nav ul{display:none}}

.hero{padding:72px 0 56px;border-bottom:1px solid var(--line)}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1 .accent{color:var(--blue)}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero .facts{display:flex;gap:28px;margin-top:36px;flex-wrap:wrap}
.hero .facts div{font-family:var(--mono);font-size:13px;color:var(--steel)}
.hero .facts strong{display:block;font-family:var(--disp);font-size:22px;color:var(--ink);font-weight:800}
.scope{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 16px 12px;box-shadow:0 20px 50px -30px rgba(14,19,32,.35)}
.scope header{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:12px;color:var(--steel);margin-bottom:8px;gap:12px}
.scope header b{color:var(--ink);font-weight:500}
.scope canvas{width:100%;height:220px;display:block;border-radius:6px;background:var(--paper)}
/* 읽기값 — 마지막 칸에 파형 선택 버튼이 들어갑니다 */
.readouts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr)) auto;gap:6px;margin-top:12px}
.readouts > div{background:var(--paper);border-radius:6px;padding:7px 9px;font-family:var(--mono);font-size:10.5px;color:var(--steel);font-variant-numeric:tabular-nums}
.readouts strong{display:block;font-size:16px;color:var(--ink);font-weight:500;white-space:nowrap}
.readouts span.unit{color:var(--blue)}
.readouts .ro-wave{display:flex;flex-direction:column;gap:5px;justify-content:space-between}

.seg{display:flex;gap:4px}
.seg button{font:inherit;font-family:var(--mono);font-size:11px;padding:3px 7px;border:1px solid var(--line);
  background:var(--surface);color:var(--steel);border-radius:5px;cursor:pointer;line-height:1.45;white-space:nowrap}
.seg button:hover{color:var(--ink);border-color:var(--blue)}
.seg button[aria-pressed="true"]{background:var(--blue);border-color:var(--blue);color:#fff}

/* 히어로 파형 조작 — 슬라이더 3개를 가로로 */
.scopectl{margin-top:10px;padding-top:10px;border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.scopectl[hidden]{display:none}
.ctl-row{display:grid;gap:3px}
.ctl-top{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.ctl-label{font-family:var(--mono);font-size:11px;color:var(--steel);letter-spacing:.04em;white-space:nowrap}
.ctl-out{font-family:var(--mono);font-size:12px;color:var(--ink);font-variant-numeric:tabular-nums}
.ctl-row input[type=range]{width:100%;accent-color:var(--blue);cursor:pointer;margin:0;height:16px}

@media (max-width:900px){
  .readouts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .readouts .ro-wave{grid-column:1 / -1;flex-direction:row;align-items:center;gap:10px}
  .readouts .ro-wave .seg{flex:1}
  .readouts .ro-wave .seg button{flex:1;text-align:center}
  .scopectl{grid-template-columns:1fr;gap:9px}
}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr}.readouts{grid-template-columns:repeat(2,1fr)}}

section.block{padding:80px 0;border-bottom:1px solid var(--line)}
.sec-head{display:grid;grid-template-columns:120px 1fr;gap:24px;align-items:start;margin-bottom:40px}
.sec-key{display:flex;gap:5px;font-size:15px;padding-top:6px}
.sec-key .plus{color:var(--steel);align-self:center;font-family:var(--mono)}
.sec-head .lead{margin-top:12px}
@media (max-width:700px){.sec-head{grid-template-columns:1fr;gap:12px}}

.services{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:26px 24px;display:flex;flex-direction:column;gap:12px}
.svc.primary{border-color:var(--blue);box-shadow:0 0 0 3px var(--tint)}
.svc .tag{font-family:var(--mono);font-size:11px;color:var(--blue);letter-spacing:.1em}
.svc p{color:var(--steel);font-size:15px}
.svc ul{margin:4px 0 0;padding-left:18px;color:var(--ink);font-size:14px;line-height:1.8}
.svc ul li::marker{color:var(--blue)}
.svc .head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.badge{display:inline-flex;align-items:center;gap:5px;font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;padding:3px 8px;border-radius:999px;border:1px solid var(--line);color:var(--steel);white-space:nowrap}
.badge.done{border-color:var(--blue);color:var(--blue);background:var(--tint)}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.legend{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px;font-size:13px;color:var(--steel);align-items:center}
@media (max-width:900px){.services{grid-template-columns:1fr}}

.spec{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;font-size:15px}
.spec th,.spec td{padding:14px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.spec tr:last-child td,.spec tr:last-child th{border-bottom:0}
.spec th{width:200px;font-family:var(--mono);font-weight:500;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);background:var(--tint)}
.spec td code{font-family:var(--mono);font-size:13px;background:var(--paper);padding:2px 7px;border-radius:4px;border:1px solid var(--line);white-space:nowrap;display:inline-block;margin:2px 4px 2px 0}
.tablewrap{overflow-x:auto}

.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column}
.case .fig{height:150px;background:var(--tint);display:flex;align-items:center;justify-content:center;overflow:hidden}
.case .fig svg{width:100%;height:100%}
.case .fig img{width:100%;height:100%;object-fit:cover}
.case .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.case .meta{font-family:var(--mono);font-size:11px;color:var(--steel);letter-spacing:.06em}
.case p{font-size:14px;color:var(--steel)}
.case .stack{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:6px}
.case .stack span{font-family:var(--mono);font-size:11px;border:1px solid var(--line);border-radius:4px;padding:2px 7px}
@media (max-width:900px){.cases{grid-template-columns:1fr}}

.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border:1px solid var(--line);border-radius:12px;background:var(--surface);overflow:hidden}
.step{padding:22px 20px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}
.step .n{font-family:var(--mono);font-size:12px;color:var(--blue)}
.step h3{margin:6px 0 8px;font-size:17px}
.step p{font-size:14px;color:var(--steel)}
@media (max-width:900px){.steps{grid-template-columns:1fr}.step{border-right:0;border-bottom:1px solid var(--line)}.step:last-child{border-bottom:0}}

.about{display:grid;grid-template-columns:280px 1fr;gap:40px;align-items:start}
.portrait{aspect-ratio:1/1.15;background:var(--tint);border:1px dashed var(--blue);border-radius:12px;display:flex;align-items:center;justify-content:center;text-align:center;padding:20px;color:var(--steel);font-size:13px;overflow:hidden}
.portrait img{width:100%;height:100%;object-fit:cover;border-radius:11px}
.about dl{display:grid;grid-template-columns:130px 1fr;gap:10px 16px;margin:20px 0 0;font-size:15px}
.about dt{font-family:var(--mono);font-size:12px;color:var(--blue);letter-spacing:.08em;padding-top:4px}
.about dd{margin:0}
@media (max-width:800px){.about{grid-template-columns:1fr}.portrait{max-width:280px}}

.company{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.info{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:24px}
.info h3{margin-bottom:14px}
.info dl{display:grid;grid-template-columns:120px 1fr;gap:8px 12px;margin:0;font-size:15px}
.info dt{color:var(--steel);font-size:14px}
.info dd{margin:0}
@media (max-width:800px){.company{grid-template-columns:1fr}}

.contact{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact form{display:grid;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:24px}
.contact label{font-size:13px;font-weight:600;display:grid;gap:6px}
.contact input,.contact textarea,.contact select{font:inherit;font-size:15px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);width:100%}
.contact textarea{min-height:120px;resize:vertical}
.contact .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.contact .list{display:grid;gap:14px;margin-top:24px}
.contact .list div{display:grid;grid-template-columns:90px 1fr;font-size:15px}
.contact .list b{font-family:var(--mono);font-size:12px;color:var(--blue);letter-spacing:.08em;padding-top:5px;font-weight:500}
.formmsg{font-size:14px;padding:10px 12px;border-radius:8px;display:none}
.formmsg.ok{display:block;background:var(--tint);color:var(--blue)}
.formmsg.err{display:block;background:var(--amber-bg);color:var(--ink)}
@media (max-width:800px){.contact{grid-template-columns:1fr}.contact .row{grid-template-columns:1fr}}

footer{padding:36px 0 48px;color:var(--steel);font-size:13px}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}