:root{
  --brand:#2563eb; --brand-strong:#1d4ed8; --brand-wash:#eaf1fd;
  --ink:#0f1e36; --ink-soft:#2a3a54;
  --bg:#ffffff; --surface:#ffffff; --surface-2:#f4f7fb; --surface-3:#eaf0f7;
  --line:#e6ebf2; --line-strong:#d5dded;
  --muted:#63728a; --faint:#95a2b6;
  --navy:#0f1e36; --navy-soft:#16294a;
  --maxw:1180px;
  --shadow:0 1px 2px rgba(15,30,54,.04), 0 10px 30px rgba(15,30,54,.06);
  --shadow-lg:0 20px 60px rgba(15,30,54,.14);
}
@media (prefers-color-scheme:dark){:root{
  --brand:#5b9df7; --brand-strong:#3b82f6; --brand-wash:#132238;
  --ink:#eef3fb; --ink-soft:#c6d2e2;
  --bg:#0a1120; --surface:#0f1929; --surface-2:#0d1524; --surface-3:#182742;
  --line:#20304a; --line-strong:#2a3b58;
  --muted:#98a6bd; --faint:#69788f;
  --navy:#0f1929; --navy-soft:#16294a;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.4);
  --shadow-lg:0 20px 60px rgba(0,0,0,.55);
}}
:root[data-theme=dark]{--brand:#5b9df7;--brand-strong:#3b82f6;--brand-wash:#132238;--ink:#eef3fb;--ink-soft:#c6d2e2;--bg:#0a1120;--surface:#0f1929;--surface-2:#0d1524;--surface-3:#182742;--line:#20304a;--line-strong:#2a3b58;--muted:#98a6bd;--faint:#69788f;--navy:#0f1929;--navy-soft:#16294a;--shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.4);--shadow-lg:0 20px 60px rgba(0,0,0,.55);}
:root[data-theme=light]{--brand:#2563eb;--brand-strong:#1d4ed8;--brand-wash:#eaf1fd;--ink:#0f1e36;--ink-soft:#2a3a54;--bg:#ffffff;--surface:#ffffff;--surface-2:#f4f7fb;--surface-3:#eaf0f7;--line:#e6ebf2;--line-strong:#d5dded;--muted:#63728a;--faint:#95a2b6;--navy:#0f1e36;--navy-soft:#16294a;--shadow:0 1px 2px rgba(15,30,54,.04),0 10px 30px rgba(15,30,54,.06);--shadow-lg:0 20px 60px rgba(15,30,54,.14);}

*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Pretendard","Pretendard Variable",-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR",system-ui,sans-serif;
  font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
svg{fill:none;stroke:currentColor;stroke-width:1.85;stroke-linecap:round;stroke-linejoin:round}
h1,h2,h3{margin:0;letter-spacing:-.022em;text-wrap:balance}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;
  border-radius:11px;font-weight:700;font-size:16px;padding:12px 22px;cursor:pointer;transition:.15s;white-space:nowrap}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-strong)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn.ghost:hover{border-color:var(--ink);color:var(--ink)}
.btn.lg{padding:16px 30px;font-size:17.5px;border-radius:12px}
.btn svg{width:18px;height:18px}

/* gnb */
/* 상단=흰색 → 스크롤(흰 섹션 진입)=네이비 전환 */
.gnb{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 86%,transparent);
  backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--line);
  transition:background .25s,border-color .25s,box-shadow .25s}
.gnb .wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:74px}
.gnb .brand{justify-self:start}
.gnb .nav{justify-self:center}
.gnb .acts{justify-self:end}
.brand{display:flex;align-items:center}
.brand img{height:30px;width:auto;display:block}
/* 상단(흰 헤더) = 컬러 로고 (다크테마는 화이트) */
.brand .logo-w{display:none}
@media(prefers-color-scheme:dark){.brand .logo-c{display:none}.brand .logo-w{display:block}}
:root[data-theme=dark] .brand .logo-c{display:none}
:root[data-theme=dark] .brand .logo-w{display:block}
:root[data-theme=light] .brand .logo-c{display:block}
:root[data-theme=light] .brand .logo-w{display:none}
.nav{display:flex;gap:30px;font-size:16.5px;font-weight:600;color:var(--ink-soft);transition:color .25s}
.nav a:hover{color:var(--ink)}
.nav a.on{color:var(--ink);position:relative}
.nav a.on::after{content:"";position:absolute;left:0;right:0;bottom:-27px;height:2.5px;background:var(--ink);border-radius:2px}
/* 스크롤(흰 섹션 진입) = 네이비 헤더 + 화이트 로고 */
.gnb.scrolled{background:color-mix(in srgb,var(--navy) 95%,transparent);border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 4px 22px rgba(15,30,54,.18)}
.gnb.scrolled .brand .logo-c{display:none !important}
.gnb.scrolled .brand .logo-w{display:block !important}
.gnb.scrolled .nav{color:#c3cede}
.gnb.scrolled .nav a:hover,.gnb.scrolled .nav a.on{color:#fff}
.gnb.scrolled .nav a.on::after{background:#fff}
.gnb.scrolled .alink{color:#b8c4d6}
.gnb.scrolled .alink:hover{color:#fff}
.gnb .sp{flex:1}.gnb .acts{display:flex;align-items:center;gap:22px}
.gnb .alink{font-size:15.5px;font-weight:600;color:var(--ink-soft);cursor:pointer;transition:color .25s}
.gnb .alink:hover{color:var(--ink)}
@media(max-width:980px){.nav{display:none}}
@media(max-width:520px){.gnb .acts .hideS{display:none}}

/* hero (full-bleed 배경 영상) */
.hero{position:relative;overflow:hidden;background:#0a1424}
.hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-bg video,.hero-bg .sim{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
/* 시안용 배경영상 대체 애니메이션 (실제 사이트는 <video>) */
.hero-bg .sim{background:
   radial-gradient(1200px 600px at 18% 8%, #16365f, transparent 58%),
   radial-gradient(1000px 720px at 92% 96%, #0d2647, transparent 60%),
   linear-gradient(125deg,#0a1424,#0c1d36 55%,#0a1526);}
.hero-bg .sim::before{content:"";position:absolute;inset:-30%;
   background:
     radial-gradient(3px 3px at 20% 30%, rgba(130,175,255,.75), transparent 60%),
     radial-gradient(2px 2px at 62% 58%, rgba(120,170,255,.5), transparent 60%),
     radial-gradient(2px 2px at 82% 22%, rgba(165,205,255,.6), transparent 60%),
     radial-gradient(2px 2px at 40% 82%, rgba(120,170,255,.5), transparent 60%),
     radial-gradient(2px 2px at 74% 74%, rgba(150,195,255,.5), transparent 60%);
   animation:heroPan 20s ease-in-out infinite;}
.hero-bg .sim::after{content:"";position:absolute;inset:0;pointer-events:none;
   background:
     linear-gradient(90deg,transparent,rgba(94,196,255,.16),transparent) 0 36%/220% 2px no-repeat,
     linear-gradient(90deg,transparent,rgba(120,210,255,.22),transparent) 0 50%/180% 3px no-repeat,
     linear-gradient(90deg,transparent,rgba(94,196,255,.14),transparent) 0 63%/200% 2px no-repeat,
     linear-gradient(90deg,transparent,rgba(120,210,255,.12),transparent) 0 74%/240% 2px no-repeat;
   filter:blur(1px);animation:heroStreams 8s linear infinite;}
@keyframes heroPan{0%,100%{transform:translate(0,0)}50%{transform:translate(2.5%,-2.5%)}}
@keyframes heroStreams{0%{background-position-x:-60%,-30%,-80%,-50%}100%{background-position-x:170%,190%,160%,200%}}
.hero-shade{position:absolute;inset:0;z-index:1;
   background:linear-gradient(90deg, rgba(6,13,25,.86) 0%, rgba(6,13,25,.58) 46%, rgba(6,13,25,.32) 100%),
             linear-gradient(0deg, rgba(6,13,25,.62), transparent 42%);}
.hero .wrap{position:relative;z-index:2;padding:120px 24px 132px}
.hero .htext{max-width:600px}
.hero .eyebrow{color:#8fb2e6}
.hero h1{font-size:52px;line-height:1.15;font-weight:800;letter-spacing:-.03em;color:#fff}
.hero .lead{margin:26px 0 34px;font-size:19px;color:#ccd9ec;max-width:27em}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap}
.hero .btn.ghost{color:#fff;border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.05)}
.hero .btn.ghost:hover{border-color:#fff;background:rgba(255,255,255,.12)}
.hero .meta{margin-top:34px;display:flex;gap:26px;flex-wrap:wrap;color:#b4c4dc;font-size:14.5px}
.hero .meta span{display:inline-flex;align-items:center;gap:8px}
.hero .meta svg{width:17px;height:17px;color:#8fb2e6}
.hero .svcard{border-color:rgba(255,255,255,.14)}
.hero .vtag{position:absolute;left:50%;transform:translateX(-50%);bottom:16px;z-index:3;display:inline-flex;align-items:center;gap:7px;
   font-size:12px;color:#9fb2cc;background:rgba(6,13,25,.5);border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:6px 13px}
.hero .vtag svg{width:13px;height:13px;stroke:#9fb2cc}
@media(prefers-reduced-motion:reduce){.hero-bg .sim::before,.hero-bg .sim::after{animation:none}}
@media(max-width:980px){.hero .wrap{padding:84px 24px 96px}.hero h1{font-size:38px}}

/* server price card */
.svcard{background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-lg);overflow:hidden}
.svcard .tabs{display:flex;gap:4px;padding:8px;background:var(--surface-2);border-bottom:1px solid var(--line)}
.svcard .tabs button{flex:1;border:0;background:transparent;color:var(--muted);font-weight:700;font-size:15px;
  padding:11px 8px;cursor:pointer;border-radius:9px}
.svcard .tabs button.on{color:var(--ink);background:var(--surface);box-shadow:var(--shadow)}
.svcard .body{padding:10px 10px 12px}
.plan{display:flex;align-items:center;gap:14px;padding:17px 16px;border-radius:12px}
.plan+.plan{border-top:1px solid var(--line)}
.plan:hover{background:var(--surface-2)}
.plan .nm{font-weight:800;font-size:16px;min-width:96px}
.plan .nm .badge{display:inline-block;font-size:10px;font-weight:800;letter-spacing:.04em;padding:2px 6px;border-radius:5px;background:var(--surface-3);color:var(--ink-soft);margin-left:6px;vertical-align:middle}
.plan .spec{flex:1;color:var(--muted);font-size:13.5px;font-variant-numeric:tabular-nums}
.plan .spec b{color:var(--ink-soft);font-weight:600}
.plan .pr{text-align:right;white-space:nowrap}
.plan .pr b{font-size:19px;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums}
.plan .pr .u{display:block;font-size:11.5px;color:var(--faint);font-weight:500}
.svcard .foot{display:flex;align-items:center;justify-content:space-between;padding:14px 22px;border-top:1px solid var(--line);background:var(--surface-2)}
.svcard .foot .note{font-size:12.5px;color:var(--faint)}
@media(max-width:520px){.plan{flex-wrap:wrap;gap:6px}.plan .spec{width:100%;order:3}}

/* cloud pricing (iwinv형 요금카드) */
.ptabs{display:flex;justify-content:center;margin-bottom:44px}
.ptabs .in{display:inline-flex;gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:5px;box-shadow:var(--shadow)}
.ptabs button{border:0;background:transparent;color:var(--muted);font-weight:700;font-size:15.5px;padding:11px 30px;border-radius:999px;cursor:pointer;transition:.15s}
.ptabs button.on{background:var(--navy);color:#fff}
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pcard2{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:34px 32px 26px;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.18s}
.pcard2:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.pcard2 .plabel{align-self:flex-start;font-size:13px;font-weight:700;color:var(--ink-soft);border:1.5px solid var(--line-strong);border-radius:999px;padding:5px 14px}
.pcard2 .pname{color:var(--muted);font-size:15.5px;margin-top:18px;font-weight:600}
.pcard2 .pprice{margin-top:6px;font-size:36px;font-weight:800;color:#1f5fd6;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.pcard2 .pprice .pu{font-size:16px;font-weight:700;color:var(--ink-soft);margin-left:4px}
.pcard2 .pvat{font-size:13px;color:var(--faint);margin-top:4px}
.pcard2 .pdiv{height:1px;background:var(--line);margin:22px 0 6px}
.pcard2 .srow{padding:12px 0 2px}
.pcard2 .sk{font-size:13.5px;color:var(--faint)}
.pcard2 .sv{font-size:16.5px;font-weight:700;color:var(--ink);margin-top:2px;font-variant-numeric:tabular-nums}
.pcard2 .go{margin-top:22px;display:block;text-align:center;padding:13px;border-radius:11px;background:var(--brand);color:#fff;font-size:15px;font-weight:700;text-decoration:none}
.pcard2 .go svg{display:none}
.pcard2 .go:hover{background:var(--brand-strong)}
.pcard2 .blh{font-size:13.5px;color:var(--faint);margin-top:14px}
.pcard2 ul.bl{margin:6px 0 0;padding-left:19px;color:var(--ink);font-size:15px;line-height:1.85}
.pcard2 ul.bl li{font-weight:600}
.pnote{text-align:center;color:var(--faint);font-size:13.5px;margin-top:26px}
@media(max-width:960px){.pgrid{grid-template-columns:1fr;max-width:440px;margin:0 auto}.ptabs button{padding:10px 18px}}

/* generous section */
section.blk{padding:104px 0}
.head{max-width:38em;margin:0 auto 60px;text-align:center}
.head h2{font-size:36px;font-weight:800;margin-top:14px;letter-spacing:-.03em}
.head p{color:var(--muted);font-size:18px;margin:16px 0 0}

/* feature trio (airy) */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:48px}
.feat .f{text-align:center}
.feat .f .ic{width:60px;height:60px;margin:0 auto 20px;border-radius:16px;background:var(--surface-3);
  color:var(--ink-soft);display:grid;place-items:center}
.feat .f .ic svg{width:28px;height:28px}
.feat .f h3{font-size:20px;font-weight:800}
.feat .f p{color:var(--muted);font-size:15.5px;margin:12px 0 0}
@media(max-width:820px){.feat{grid-template-columns:1fr;gap:40px;max-width:420px;margin:0 auto}}

/* statement (restrained, navy) */
.statement{background:var(--navy);border-radius:24px;padding:72px 56px;color:#eaf1fb;text-align:center;position:relative;overflow:hidden}
.statement::after{content:"";position:absolute;left:50%;top:-40%;width:520px;height:520px;transform:translateX(-50%);border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.06),transparent 62%)}
.statement .in{position:relative;z-index:1;max-width:640px;margin:0 auto}
.statement .eyebrow{color:#93a3bd}
.statement h2{color:#fff;font-size:34px;font-weight:800;margin-top:14px;letter-spacing:-.03em}
.statement p{color:#adbdd4;font-size:17.5px;margin:16px 0 30px}

/* service overview (히어로 직하단, 가망고객용 한눈 개요) */
.svc{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.svc .s{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:30px;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.18s}
.svc .s:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.svc .s.featured{grid-column:1/-1;flex-direction:row;align-items:center;gap:36px;padding:40px 44px;border-color:var(--line-strong)}
.svc .ic{width:54px;height:54px;border-radius:14px;background:var(--surface-3);color:var(--ink-soft);display:grid;place-items:center;flex:none;margin-bottom:18px}
.svc .ic svg{width:27px;height:27px}
.svc .featured .ic{width:66px;height:66px;margin:0;border-radius:16px}
.svc .featured .ic svg{width:32px;height:32px}
.svc h3{font-size:21px;font-weight:800}
.svc .featured h3{font-size:24px}
.svc p{color:var(--muted);font-size:15.5px;margin:8px 0 0}
.svc .pts{display:flex;gap:20px;flex-wrap:wrap;margin:14px 0 0;padding:0;list-style:none;color:var(--ink-soft);font-size:14.5px}
.svc .pts li{display:inline-flex;gap:7px;align-items:center}
.svc .pts svg{width:16px;height:16px}
.svc .featured .tx{flex:1}
.svc .featured .act{display:flex;gap:10px;flex:none;flex-wrap:wrap}
.svc .s:not(.featured) .grow{flex:1}
.svc .s:not(.featured) .act{margin-top:22px}
.dsearch{display:flex;gap:8px;background:var(--surface-2);border:1px solid var(--line-strong);border-radius:12px;padding:7px;margin-top:18px}
.dsearch input{flex:1;min-width:0;border:0;background:transparent;color:var(--ink);font-size:15.5px;padding:9px 10px;outline:none}
.dsearch button{border:0;background:var(--brand);color:#fff;border-radius:9px;padding:0 18px;font-weight:700;font-size:14.5px;cursor:pointer}
.dsearch button:hover{background:var(--brand-strong)}
.dchips{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.dchips span{font-size:12.5px;color:var(--muted);background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:4px 10px}
.dchips b{color:#1f5fd6;font-variant-numeric:tabular-nums}
@media(max-width:960px){.svc{grid-template-columns:1fr}.svc .s.featured{flex-direction:column;align-items:flex-start;gap:22px;padding:30px}}

/* cta */
.ctaband{text-align:center;max-width:640px;margin:0 auto}
.ctaband h2{font-size:32px;font-weight:800;letter-spacing:-.03em}
.ctaband p{color:var(--muted);font-size:18px;margin:14px 0 28px}

/* footer */
footer{background:var(--surface-2);border-top:1px solid var(--line);padding:56px 0 60px;font-size:14.5px;color:var(--muted)}
footer .top{display:flex;justify-content:space-between;gap:34px;flex-wrap:wrap;align-items:flex-start;margin-bottom:30px}
footer .cs .n{font-weight:800;color:var(--ink);font-size:15px}
footer .cs .tel{font-size:28px;font-weight:800;color:var(--ink);margin:4px 0}
footer .links{display:flex;gap:48px;flex-wrap:wrap}
footer .links b{display:block;color:var(--ink);font-size:14px;margin-bottom:12px}
footer .links a{display:block;color:var(--muted);padding:3px 0}
footer .links a:hover{color:var(--ink)}
footer .biz{border-top:1px solid var(--line);padding-top:22px;line-height:1.95}
.themetip{position:fixed;right:14px;bottom:14px;z-index:60;background:var(--surface);border:1px solid var(--line);color:var(--muted);
  font-size:12.5px;padding:8px 12px;border-radius:999px;box-shadow:var(--shadow)}