/* INSTEP 서비스 상세 쪽 (2026-11-06, instepsvc). 값은 홈 C site/style.css 와 DESIGN_C.md 를 그대로 따른다. */
@import url('https://fonts.googleapis.com/css2?family=Nanum+Gothic:wght@400;700;800&display=swap');
@font-face{font-family:"Geist";src:url("../fonts/Geist-Regular.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Geist";src:url("../fonts/Geist-Medium.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Geist Mono";src:url("../fonts/GeistMono-Regular.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Geist Mono";src:url("../fonts/GeistMono-Medium.woff2") format("woff2");font-weight:500;font-display:swap}
:root{
  --bg:#0E0E13; --bg2:rgba(247,247,250,.03); --ink:#F7F7FA; --ink2:#C9C9D4; --line:rgba(247,247,250,.16); --line2:rgba(247,247,250,.08); --warm:#8C8CFF;
  --font:"Geist","Nanum Gothic","NanumGothic",sans-serif; --ko:"Nanum Gothic","NanumGothic",sans-serif;
  --mono:"Geist Mono","Nanum Gothic",monospace; --ease:cubic-bezier(.16,1,.3,1); --pad:56px; --max:1328px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--ko);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden;word-break:keep-all}
a{color:inherit}
img{max-width:100%;display:block}
.skip{position:absolute;left:-999px;top:0}.skip:focus{left:16px;top:16px;z-index:50;background:#fff;color:#000;padding:8px 12px}
.mono{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.06em;line-height:1.6;text-transform:uppercase}
.dim{color:var(--ink2)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}

/* 머리 띠: 홈 C 와 같은 높이·글꼴. 내려가면 바탕을 깐다 */
header.top{position:sticky;z-index:20;left:0;right:0;top:0;height:76px;margin-bottom:-76px;display:flex;align-items:center;justify-content:space-between;padding:0 var(--pad);transition:background .3s,border-color .3s;border-bottom:1px solid transparent}
header.top.solid{background:rgba(14,14,19,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom-color:var(--line2)}
.brand .wm{display:block;height:13px;width:auto}
.nav{display:flex;gap:34px;font-family:var(--font);font-size:14px}
.nav a{text-decoration:none;color:var(--ink)}
.nav a:last-child{border-bottom:1px solid var(--ink)}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--ink);height:34px;padding:0 14px;border-radius:2px;cursor:pointer}
.menu{display:none}

/* 첫 띠: 그 갈래의 장면 정지 그림 위에 홈 C 갈래 칸과 같은 글 */
.hero{position:relative;min-height:88vh;min-height:88svh;display:flex;align-items:flex-end;padding:140px 0 72px;overflow:hidden}
.hero .bgimg{position:absolute;inset:0;background-size:cover;background-position:62% 50%}
.hero .bgimg:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,14,19,.82) 0%,rgba(14,14,19,.6) 38%,rgba(14,14,19,.05) 70%),linear-gradient(rgba(14,14,19,0) 55%,#0E0E13 100%)}
.hero .wrap{position:relative;width:100%}
.hero .card{max-width:640px}
.crumb{color:var(--ink2);margin-bottom:18px}
.crumb a{text-decoration:none;border-bottom:1px solid var(--line)}
h1{font-family:var(--ko);font-size:44px;line-height:1.3;font-weight:700;letter-spacing:-.03em;margin:0 0 18px;text-shadow:0 1px 14px rgba(14,14,19,.55)}
.hero .en{font-family:var(--font);font-weight:500;font-size:20px;letter-spacing:-.02em;color:var(--ink2);margin:0 0 6px}
.lead{font-size:17px;color:var(--ink);margin:0;text-shadow:0 1px 14px rgba(14,14,19,.55)}
.hacts{margin-top:26px}
.ctap{max-width:620px;margin:0}
.jump{display:flex;flex-wrap:wrap;gap:8px 8px;list-style:none;padding:0;margin:30px 0 0}
.jump a{display:inline-flex;align-items:center;height:34px;padding:0 12px;border:1px solid var(--line);border-radius:2px;text-decoration:none;font-size:13.5px;background:rgba(14,14,19,.45);transition:border-color .3s}
.jump a:hover,.jump a.on{border-color:var(--ink)}
.jump a.on{background:rgba(247,247,250,.1)}
.hero .bgimg{background-image:var(--hero)}

/* 공통 띠 */
section.band{padding:96px 0;border-top:1px solid var(--line2)}
.k{color:var(--ink2);margin:0 0 10px}
h2{font-family:var(--ko);font-size:31px;line-height:1.36;font-weight:700;letter-spacing:-.03em;margin:0 0 16px}
h3{font-family:var(--ko);font-size:17px;line-height:1.5;font-weight:700;margin:30px 0 10px}
p{margin:0 0 14px}
.intro{max-width:760px;color:var(--ink2)}

/* 원칙 세 칸 */
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:34px;border-top:1px solid var(--line)}
.cols>div{padding:22px 26px 6px 0;border-right:1px solid var(--line2)}
.cols>div+div{padding-left:26px}
.cols>div:last-child{border-right:0}
.cols h3{margin-top:4px}
.cols p{color:var(--ink2);font-size:15px}

/* 매체·서비스 한 칸 */
.blk{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.blk.solo{grid-template-columns:minmax(0,760px)} /* 2026-11-08 homeworks: 그림이 모두 빠진 칸은 글만 */
.blk .txt p{color:var(--ink2)}
.steps{list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{position:relative;padding:9px 0 9px 40px;border-top:1px solid var(--line2);counter-increment:s}
.steps li:before{content:"0" counter(s);position:absolute;left:0;top:11px;font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--ink2)}
.steps li b{font-weight:700}
.outs{display:flex;flex-wrap:wrap;gap:6px 14px;list-style:none;padding:0;margin:0}
.outs li{position:relative;padding-left:12px;font-size:15px}
.outs li:before{content:"";position:absolute;left:0;top:13px;width:5px;height:1px;background:var(--warm)}
.figs{display:grid;gap:14px}
.figs.two{grid-template-columns:1fr 1fr}
.figs.three{grid-template-columns:1fr 1fr}
.figs.three>figure:first-child{grid-column:1/-1}
figure{margin:0;background:var(--bg2);border:1px solid var(--line2)}
figure .shot{display:block;background:#fff;overflow:hidden;cursor:zoom-in}
figure .shot.dark{background:#0E0E13}
figure img{width:100%;height:auto}
figure.tall .shot{max-height:640px}
figure.tall img{object-fit:cover;object-position:top}
figcaption{font-size:13.5px;line-height:1.6;color:var(--ink2);padding:10px 14px 12px;border-top:1px solid var(--line2)}
figcaption .mono{display:block;color:var(--ink);margin-bottom:2px}

/* 견본 문서(화면이 없는 매체의 계획서·규격표) */
.doc{background:#FFFFFF;color:#16161D;border:1px solid var(--line2);padding:22px 24px 18px}
.doc .dk{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:#5E5E70;margin:0 0 4px}
.doc h4{font-family:var(--ko);font-size:17px;margin:0 0 12px}
.doc table{width:100%;border-collapse:collapse;font-size:13.5px;line-height:1.6}
.doc th,.doc td{text-align:left;vertical-align:top;padding:7px 10px 7px 0;border-top:1px solid #E4E4EC}
.doc th{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.04em;color:#5E5E70;white-space:nowrap}
.doc .note{font-size:12.5px;color:#5E5E70;margin:10px 0 0}

/* 업계 공개 자료 기준 수치 */
.bench{margin-top:44px;border:1px solid var(--line);background:rgba(247,247,250,.02)}
.bench .bh{display:flex;justify-content:space-between;gap:16px;align-items:baseline;padding:14px 20px;border-bottom:1px solid var(--line)}
.bench .bh h3{margin:0;font-size:16px}
.bench .bh .mono{color:var(--ink2)}
.bench table{width:100%;border-collapse:collapse;font-size:14.5px}
.bench th,.bench td{text-align:left;vertical-align:top;padding:11px 20px;border-top:1px solid var(--line2)}
.bench thead th{border-top:0;font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--ink2)}
.bench td.v{font-family:var(--font);font-weight:500;font-size:17px;min-width:120px;max-width:380px}
.bench td.s a{text-decoration:none;border-bottom:1px solid var(--line)}
.bench td.s{color:var(--ink2);font-size:13.5px}
.bench .how{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line)}
.bench .how>div{padding:16px 20px}
.bench .how>div+div{border-left:1px solid var(--line2)}
.bench .how h4{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--ink2);margin:0 0 6px}
.bench .how p{font-size:14.5px;color:var(--ink);margin:0}

/* 측정 흐름 */
.flow{display:grid;grid-template-columns:repeat(6,1fr);gap:0;margin-top:30px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.flow>div{padding:18px 16px 16px 0;position:relative}
.flow>div+div{padding-left:16px;border-left:1px solid var(--line2)}
.flow .mono{color:var(--ink2)}
.flow b{display:block;font-size:15px;margin:6px 0 4px}
.flow p{font-size:13.5px;color:var(--ink2);margin:0;line-height:1.65}

/* 상품: 메뉴판의 세 단계 */
.prod{border-top:1px solid var(--line);padding:28px 0 8px}
.prod .ph{display:flex;justify-content:space-between;gap:24px;align-items:baseline;flex-wrap:wrap}
.prod .ph h3{margin:0;font-size:20px}
.prod .ph p{margin:0;color:var(--ink2);font-size:14.5px}
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
.tier{border:1px solid var(--line2);padding:16px 18px 10px;background:rgba(247,247,250,.02)}
.tier .tl{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px}
.tier .tl b{font-size:16px}
.tier dl{margin:0;display:grid;grid-template-columns:92px 1fr;gap:6px 10px;font-size:14px;line-height:1.65}
.tier dt{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.04em;color:var(--ink2);padding-top:1px}
.tier dd{margin:0}
.terms{margin-top:26px;display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line)}
.terms>div{padding:18px 24px 6px 0}
.terms>div+div{padding-left:24px;border-left:1px solid var(--line2)}
.terms p{color:var(--ink2);font-size:14.5px}

/* 문의 띠 */
.cta{padding:110px 0 120px;border-top:1px solid var(--line2)}
.cta .row{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap}
.cta h2{font-size:36px;max-width:720px}
.acts{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;height:46px;padding:0 22px;background:var(--ink);color:#16161D;text-decoration:none;font-family:var(--ko);font-weight:700;font-size:14px;border-radius:2px;border:1px solid var(--ink);transition:background .3s,color .3s}
.btn:hover{background:transparent;color:var(--ink)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--ink)}
.others{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:56px;border-top:1px solid var(--line)}
.others a{display:block;padding:16px 16px 14px 0;text-decoration:none}
.others a+a{padding-left:16px;border-left:1px solid var(--line2)}
.others a .mono{color:var(--ink2);display:block}
.others a span.t{font-size:15px}
.others a:hover span.t{border-bottom:1px solid var(--ink)}

footer.foot{display:flex;align-items:center;gap:28px;padding:18px var(--pad) 32px;border-top:1px solid var(--line);color:var(--ink2);max-width:var(--max);margin:0 auto}
footer.foot .wm{height:13px;width:auto}
footer.foot nav{display:flex;gap:18px;margin-left:auto}
footer.foot a{text-decoration:none}

@media (max-width:1100px){
  .blk{grid-template-columns:1fr;gap:30px}
  .flow{grid-template-columns:repeat(3,1fr)}
  .flow>div:nth-child(4){border-left:0;padding-left:0}
  .flow>div:nth-child(n+4){border-top:1px solid var(--line2)}
  .others{grid-template-columns:repeat(3,1fr)}
  .others a:nth-child(4){border-left:0;padding-left:0}
}
@media (max-width:760px){
  :root{--pad:20px}
  header.top{height:60px;margin-bottom:-60px}
  .nav{display:none}
  .menu-btn{display:block}
  .menu.open{display:flex;flex-direction:column;position:fixed;z-index:19;left:0;right:0;top:60px;background:var(--bg);padding:10px var(--pad) 24px;border-bottom:1px solid var(--line)}
  .menu a{display:flex;gap:12px;align-items:baseline;padding:11px 0;border-top:1px solid var(--line2);text-decoration:none;font-family:var(--font);font-size:16px}
  .menu a .mono{color:var(--ink2)}
  .menu a.go{margin-top:12px;justify-content:center;background:var(--ink);color:#16161D;font-family:var(--ko);font-weight:700;font-size:14px;border:0;height:46px;align-items:center;border-radius:2px}
  .hero{min-height:auto;padding:150px 0 48px}
  .hero .bgimg{background-position:70% 30%;background-image:var(--hero-m)}
  .jump a{height:44px}
  .menu-btn{height:44px}
  .menu a[aria-current]{color:var(--ink)}
  .menu a[aria-current]:after{content:"";flex:0 0 5px;height:1px;background:var(--warm);margin-left:auto;align-self:center}
  .others a{min-height:44px}
  .brand,footer.foot a,.crumb a{display:inline-flex;align-items:center;min-height:44px}
  .hero .bgimg:after{background:linear-gradient(rgba(14,14,19,.35) 0%,rgba(14,14,19,.78) 45%,#0E0E13 100%)}
  h1{font-size:30px}
  .hero .en{font-size:17px}
  .lead{font-size:16px}
  section.band{padding:64px 0}
  h2{font-size:23px}
  .cols{grid-template-columns:1fr}
  .cols>div,.cols>div+div{padding:18px 0 4px;border-right:0;border-top:1px solid var(--line2)}
  .cols>div:first-child{border-top:0}
  .figs.two,.figs.three{grid-template-columns:1fr}
  figure.tall .shot{max-height:520px}
  .bench .bh{flex-direction:column;gap:2px;padding:12px 16px}
  .bench table,.bench thead,.bench tbody,.bench tr,.bench td{display:block;width:100%}
  .bench thead{display:none}
  .bench tr{border-top:1px solid var(--line2);padding:10px 16px}
  .bench td{border:0;padding:2px 0}
  .bench td.v{white-space:normal}
  .bench .how{grid-template-columns:1fr}
  .bench .how>div{padding:14px 16px}
  .bench .how>div+div{border-left:0;border-top:1px solid var(--line2)}
  .doc{padding:16px 14px 14px}
  .doc table,.doc tbody,.doc tr,.doc th,.doc td{display:block;width:100%}
  .doc tr{border-top:1px solid #E4E4EC;padding:6px 0}
  .doc th,.doc td{border:0;padding:1px 0;white-space:normal}
  .flow{grid-template-columns:1fr}
  .flow>div,.flow>div+div{padding:14px 0;border-left:0;border-top:1px solid var(--line2)}
  .flow>div:first-child{border-top:0}
  .tiers{grid-template-columns:1fr}
  .tier dl{grid-template-columns:70px 1fr}
  .terms{grid-template-columns:1fr}
  .terms>div,.terms>div+div{padding:16px 0 4px;border-left:0;border-top:1px solid var(--line2)}
  .terms>div:first-child{border-top:0}
  .cta{padding:72px 0 80px}
  .cta h2{font-size:25px}
  .others{grid-template-columns:1fr 1fr}
  .others a,.others a+a{padding:14px 12px 12px 0;border-left:0;border-top:1px solid var(--line2)}
  footer.foot{flex-wrap:wrap;gap:10px 18px}
  footer.foot nav{margin-left:0;width:100%}
}