/* =========================================================================
   (주)코드케이 CODE K - Corporate One-Page
   Dark Theme / Point Color #0066ff
   ========================================================================= */

/* ---------- 0. Tokens ---------- */
:root {
  --blue: #0066ff;
  --blue-l: #4d95ff;
  --blue-d: #0047d6;
  --blue-soft: rgba(0, 102, 255, .12);
  --blue-line: rgba(0, 102, 255, .34);

  --bg: #070a11;
  --bg-2: #0b1020;
  --bg-3: #0e1526;
  --card: rgba(255, 255, 255, .034);
  --card-h: rgba(255, 255, 255, .06);
  --line: rgba(255, 255, 255, .085);
  --line-2: rgba(255, 255, 255, .16);

  --tx: #eaf0fb;
  --tx-2: #a9b8d1;
  --tx-3: #6e7f9b;

  --wrap: 1280px;
  --r: 16px;
  --r-s: 10px;
  --hd-h: 92px;

  --sh: 0 20px 50px rgba(0, 0, 0, .45);
  --sh-blue: 0 14px 38px rgba(0, 102, 255, .32);

  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
          "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--hd-h) + 14px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--tx);
  line-height: 1.65;
  letter-spacing: -.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }

::selection { background: var(--blue); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #1e2942; border-radius: 8px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #2c3a5c; }

:focus-visible { outline: 2px solid var(--blue-l); outline-offset: 3px; border-radius: 4px; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--blue); color: #fff; padding: 12px 20px; border-radius: 0 0 10px 0;
}
.skip:focus { left: 0; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* ---------- 2. Shared bits ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12px; font-weight: 700; letter-spacing: .16em;
  color: var(--blue-l); text-transform: uppercase; margin-bottom: 13px;
}
.dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--blue);
  box-shadow: 0 0 0 4px rgba(0, 102, 255, .2);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(0, 102, 255, .28); }
  50% { box-shadow: 0 0 0 8px rgba(0, 102, 255, 0); }
}

.hl {
  background: linear-gradient(100deg, var(--blue-l), #7fb4ff 55%, var(--blue));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

.sec__t {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800; line-height: 1.28; letter-spacing: -.035em;
  margin-bottom: 14px;
}
.sec__d { font-size: clamp(15px, 1.5vw, 17px); color: var(--tx-2); line-height: 1.85; }
.sec__d b { color: var(--tx); font-weight: 700; }

.head { max-width: 760px; margin: 0 auto 42px; text-align: center; }
.head--sub { margin-top: 66px; }
.sub__t { font-size: clamp(21px, 2.6vw, 28px); font-weight: 800; letter-spacing: -.03em; margin-bottom: 10px; }

/* 상단은 좁게(앵커로 이동했을 때 빈 공간이 크게 보이지 않도록), 하단은 여유 있게 */
.sec { position: relative; padding: clamp(44px, 3.6vw, 60px) 0 clamp(62px, 6vw, 92px); }
.sec--alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ---------- 3. Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 700; letter-spacing: -.02em; white-space: nowrap;
  border-radius: 999px; transition: all .22s cubic-bezier(.4, 0, .2, 1);
}
.btn--sm { height: 44px; padding: 0 20px; font-size: 15px; }
.btn--lg { height: 56px; padding: 0 32px; font-size: 16px; }
.btn--full { width: 100%; border-radius: 14px; }

.btn--fill { background: var(--blue); color: #fff; box-shadow: var(--sh-blue); }
.btn--fill:hover { background: var(--blue-l); transform: translateY(-2px); box-shadow: 0 18px 44px rgba(0, 102, 255, .45); }
.btn--fill:active { transform: translateY(0); }

.btn--line { border: 1px solid var(--line-2); color: var(--tx-2); }
.btn--line:hover { border-color: var(--blue); color: #fff; background: var(--blue-soft); }

.btn--glass {
  background: rgba(255, 255, 255, .06); color: #fff;
  border: 1px solid var(--line-2); backdrop-filter: blur(8px);
}
.btn--glass:hover { background: rgba(255, 255, 255, .12); transform: translateY(-2px); }

.btn:disabled { opacity: .6; cursor: not-allowed; transform: none !important; }
.btn__sp { display: none; animation: spin .8s linear infinite; }
.btn.is-load .btn__sp { display: block; }
.btn.is-load .btn__tx { opacity: .8; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 4. Header ---------- */
.hd {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--hd-h);
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.hd.is-on {
  background: rgba(7, 10, 17, .82);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom-color: var(--line);
}
.hd__in { height: var(--hd-h); display: flex; align-items: center; gap: 26px; }
.hd__bar {
  position: absolute; left: 0; bottom: -1px; height: 2px; width: 0;
  background: linear-gradient(90deg, var(--blue), var(--blue-l));
}
.hd__cta { margin-left: auto; display: flex; gap: 10px; }

/* 로고 */
.logo { display: inline-flex; align-items: center; gap: 14px; flex-shrink: 0; }
.logo__mk { border-radius: 15px; box-shadow: 0 6px 20px rgba(0, 71, 214, .5); transition: transform .3s; }
.logo:hover .logo__mk { transform: rotate(-6deg) scale(1.05); }
.logo__tx { display: flex; flex-direction: column; line-height: 1; }
.logo__w {
  font-size: 28px; font-weight: 800; letter-spacing: -.01em; color: #fff;
}
.logo__w b { color: var(--blue-l); font-weight: 800; }
.logo__tx em {
  font-style: normal; font-size: 13.5px; font-weight: 600;
  letter-spacing: .01em; color: #b8c6dd; margin-top: 7px; white-space: nowrap;
}

/* 메뉴 */
.nav { display: flex; gap: 4px; }
.nav a {
  position: relative; padding: 10px 16px; border-radius: 999px;
  font-size: 17px; font-weight: 600; color: #b7c6dc; transition: color .2s, background .2s;
}
.nav a:hover { color: #fff; background: rgba(255, 255, 255, .06); }
.nav a.is-cur { color: #fff; }
.nav a.is-cur::after {
  content: ""; position: absolute; left: 50%; bottom: 2px; translate: -50% 0;
  width: 16px; height: 2px; border-radius: 2px; background: var(--blue);
}

.burger { display: none; width: 42px; height: 42px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.burger span { width: 20px; height: 2px; background: var(--tx); border-radius: 2px; transition: .25s; }
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 5. Hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding: calc(var(--hd-h) + 60px) 0 0; overflow: hidden;
}
/* Unsplash - Data center server racks (Taylor Vick) */
.hero__bg {
  position: absolute; inset: 0;
  background:
    url("https://images.unsplash.com/photo-1558494949-ef010cbdcc31?auto=format&fit=crop&w=1920&q=80")
    center/cover no-repeat;
  filter: grayscale(.35) contrast(1.05);
  transform: scale(1.06);
  animation: kb 26s ease-in-out infinite alternate;
}
@keyframes kb { to { transform: scale(1.16) translate3d(-1.5%, -1%, 0); } }

.hero__veil {
  position: absolute; inset: 0;
  background:
    radial-gradient(1000px 600px at 18% 30%, rgba(0, 102, 255, .34), transparent 62%),
    linear-gradient(180deg, rgba(7, 10, 17, .86) 0%, rgba(7, 10, 17, .8) 45%, var(--bg) 100%);
}
.hero__grid {
  position: absolute; inset: 0; opacity: .5;
  background-image:
    linear-gradient(rgba(120, 170, 255, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 255, .08) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 30%, transparent 78%);
}
.hero__wm {
  position: absolute; right: -3vw; bottom: 12vh;
  font-size: clamp(120px, 20vw, 300px); font-weight: 900; letter-spacing: -.06em;
  line-height: .8; color: rgba(255, 255, 255, .028);
  user-select: none; pointer-events: none;
}
.hero__wm span { color: rgba(0, 102, 255, .1); }

.hero__in { position: relative; z-index: 2; padding-bottom: 92px; }

.hero__t {
  font-size: clamp(34px, 6.2vw, 70px);
  font-weight: 900; line-height: 1.16; letter-spacing: -.045em;
  margin-bottom: 24px;
  text-shadow: 0 6px 40px rgba(0, 0, 0, .55);
}
.hero__d { font-size: clamp(15px, 1.7vw, 19px); color: #c3d2e8; line-height: 1.85; margin-bottom: 38px; }
.hero__d b { color: #fff; font-weight: 700; }

.hero__btns { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 56px; }

.hero__st {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px; max-width: 720px;
}
.hero__st li {
  padding: 22px 20px; border-radius: var(--r);
  background: rgba(255, 255, 255, .045);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  transition: border-color .25s, transform .25s, background .25s;
}
.hero__st li:hover { border-color: var(--blue-line); background: rgba(0, 102, 255, .1); transform: translateY(-3px); }
.hero__st b {
  display: block; font-size: clamp(30px, 3.6vw, 42px); font-weight: 800;
  color: #fff; letter-spacing: -.04em; line-height: 1.1; margin-bottom: 4px;
}
.hero__st b.nc { color: var(--blue-l); }
.hero__st span { display: block; font-size: 15px; color: #c9d8ee; font-weight: 600; line-height: 1.45; }
.hero__st em {
  display: block; font-style: normal; font-size: 13.5px; font-weight: 700;
  color: var(--blue-l); margin-top: 3px; letter-spacing: -.01em;
}

/* 티커 */
.ticker {
  position: relative; z-index: 2;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: rgba(7, 10, 17, .5); backdrop-filter: blur(6px);
  overflow: hidden; padding: 15px 0;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.ticker__t { display: flex; align-items: center; gap: 22px; width: max-content; animation: roll 42s linear infinite; }
.ticker__t span { font-size: 13px; font-weight: 700; letter-spacing: .16em; color: var(--tx-3); white-space: nowrap; }
.ticker__t i { color: var(--blue); font-style: normal; }
@keyframes roll { to { transform: translateX(-50%); } }

/* ---------- 6. About ---------- */
.about { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(40px, 6vw, 80px); align-items: center; }

.about__pts { margin-top: 34px; display: flex; flex-direction: column; gap: 22px; }
.about__pts li { display: flex; gap: 15px; }
.ck {
  flex-shrink: 0; width: 26px; height: 26px; border-radius: 8px; margin-top: 3px;
  display: grid; place-items: center;
  background: var(--blue-soft); border: 1px solid var(--blue-line); color: var(--blue-l);
}
.ck svg { width: 14px; height: 14px; }
.about__pts b { display: block; font-size: 17px; font-weight: 700; margin-bottom: 5px; }
.about__pts p { font-size: 14.5px; color: var(--tx-2); line-height: 1.8; }

.about__R { position: relative; min-height: 460px; }
.shot { position: absolute; border-radius: 20px; overflow: hidden; border: 1px solid var(--line-2); box-shadow: var(--sh); }
.shot img { width: 100%; height: 100%; object-fit: cover; }
.shot--a { inset: 0 14% 22% 0; }
.shot--a img { height: 340px; }
.shot--b { right: 0; bottom: 0; width: 56%; z-index: 2; }
.shot--b img { height: 220px; }
.shot::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(0, 102, 255, .18), transparent 55%);
}
.badge {
  position: absolute; left: 4%; bottom: 10%; z-index: 3;
  padding: 14px 20px; border-radius: 14px;
  background: rgba(0, 102, 255, .92); color: #fff;
  box-shadow: var(--sh-blue); backdrop-filter: blur(6px);
}
.badge b { display: block; font-size: 15px; font-weight: 800; letter-spacing: .04em; }
.badge span { font-size: 11px; opacity: .85; letter-spacing: .12em; }

/* ---------- 7. Service ---------- */
/* 카드 6개 → 3열 x 2행 */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card {
  position: relative; padding: 30px 26px 28px;
  background: var(--card); border: 1px solid var(--line); border-radius: 20px;
  transition: transform .3s cubic-bezier(.4, 0, .2, 1), border-color .3s, background .3s;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--blue-l), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform .4s;
}
.card:hover { transform: translateY(-6px); border-color: var(--blue-line); background: var(--card-h); }
.card:hover::before { transform: scaleX(1); }

.card__hd { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.card__ic {
  width: 52px; height: 52px; border-radius: 15px; display: grid; place-items: center;
  background: linear-gradient(140deg, rgba(0, 102, 255, .22), rgba(0, 102, 255, .05));
  border: 1px solid var(--blue-line); color: var(--blue-l);
  transition: background .3s, color .3s;
}
.card__ic svg { width: 25px; height: 25px; }
.card:hover .card__ic { background: var(--blue); color: #fff; border-color: var(--blue); }
.card__no { font-family: var(--mono); font-size: 12px; font-weight: 700; color: var(--tx-3); letter-spacing: .1em; }

.card__t { font-size: 21px; font-weight: 800; letter-spacing: -.02em; margin-bottom: 10px; line-height: 1.35; }
.card__t2 { font-size: 16px; font-weight: 700; color: var(--blue-l); letter-spacing: -.02em; }
.card__d { font-size: 15.5px; color: #b9c8de; line-height: 1.8; margin-bottom: 20px; }
.card__d b { color: #e4ecf9; font-weight: 700; }

/* 카드 내 강조 박스 */
.cardnote {
  margin: -6px 0 18px; padding: 15px 16px; border-radius: 12px;
  background: rgba(0, 102, 255, .1); border: 1px solid var(--blue-line);
}
.cardnote b { display: block; font-size: 14.5px; font-weight: 800; color: var(--blue-l); margin-bottom: 5px; line-height: 1.4; }
.cardnote p { font-size: 13.5px; color: #b9c8de; line-height: 1.7; }

.spec { display: flex; flex-wrap: wrap; gap: 6px; }
.spec li {
  font-size: 13.5px; font-weight: 600; padding: 6px 13px; border-radius: 999px;
  background: rgba(255, 255, 255, .05); border: 1px solid var(--line); color: #d2dded;
  transition: border-color .25s, color .25s;
}
.card:hover .spec li { border-color: rgba(0, 102, 255, .28); color: #e2ecff; }

/* 업무 범위 */
.scopes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.sc {
  padding: 26px 24px; border-radius: var(--r);
  background: var(--card); border: 1px solid var(--line);
  transition: border-color .25s, transform .25s;
}
.sc:hover { border-color: var(--blue-line); transform: translateY(-3px); }
.sc__ic {
  width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center;
  background: var(--blue-soft); color: var(--blue-l); margin-bottom: 15px;
}
.sc__ic svg { width: 20px; height: 20px; }
.sc b { display: block; font-size: 17.5px; font-weight: 700; margin-bottom: 7px; }
.sc p { font-size: 15px; color: #b9c8de; line-height: 1.78; }

/* ---------- 7-2. Solution & Managed Service ---------- */
.sols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }

.sol {
  position: relative; padding: 30px 28px;
  background: var(--card); border: 1px solid var(--line); border-radius: 20px;
  transition: transform .3s cubic-bezier(.4, 0, .2, 1), border-color .3s, background .3s;
  overflow: hidden;
}
.sol::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--blue-l), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform .4s;
}
.sol:hover { transform: translateY(-6px); border-color: var(--blue-line); background: var(--card-h); }
.sol:hover::before { transform: scaleX(1); }

.sol--hot { border-color: var(--blue-line); background: linear-gradient(165deg, rgba(0, 102, 255, .1), rgba(255, 255, 255, .02)); }
.sol--hot::before { transform: scaleX(1); }

.sol__hd { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; flex-wrap: wrap; }
.sol__hd > div { flex: 1 1 160px; min-width: 0; }
.sol__ic {
  flex-shrink: 0; width: 52px; height: 52px; border-radius: 15px; display: grid; place-items: center;
  background: linear-gradient(140deg, rgba(0, 102, 255, .22), rgba(0, 102, 255, .05));
  border: 1px solid var(--blue-line); color: var(--blue-l);
  transition: background .3s, color .3s, border-color .3s;
}
.sol__ic svg { width: 25px; height: 25px; }
.sol:hover .sol__ic { background: var(--blue); color: #fff; border-color: var(--blue); }

.sol__t { font-size: 21px; font-weight: 800; letter-spacing: -.025em; line-height: 1.3; }
.sol__s { font-size: 13.5px; color: #93a5c2; font-weight: 600; margin-top: 4px; }

.tag {
  margin-left: auto; align-self: flex-start; flex-shrink: 0;
  font-size: 12px; font-weight: 800; letter-spacing: .05em; white-space: nowrap;
  padding: 6px 13px; border-radius: 999px;
  background: rgba(255, 255, 255, .07); border: 1px solid var(--line); color: var(--tx-2);
}
.tag--sub { background: var(--blue-soft); border-color: var(--blue-line); color: var(--blue-l); }
.tag--hot { background: var(--blue); border-color: var(--blue); color: #fff; box-shadow: 0 4px 14px rgba(0, 102, 255, .4); }

.sol__d { font-size: 15.5px; color: #b9c8de; line-height: 1.8; margin-bottom: 20px; }
.sol__d b { color: #fff; font-weight: 700; }

/* 솔루션 카드 내 강조 박스 (웹방화벽 홈페이지 보호) */
.solnote {
  display: flex; gap: 13px; align-items: flex-start;
  margin-bottom: 20px; padding: 15px 16px; border-radius: 13px;
  background: rgba(0, 102, 255, .14); border: 1px solid var(--blue-line);
}
.solnote__ic {
  flex-shrink: 0; width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  background: var(--blue); color: #fff; box-shadow: 0 4px 14px rgba(0, 102, 255, .4);
}
.solnote__ic svg { width: 18px; height: 18px; }
.solnote b { display: block; font-size: 14.5px; font-weight: 800; color: #fff; margin-bottom: 5px; line-height: 1.4; }
.solnote p { font-size: 13.5px; color: #c0d1ea; line-height: 1.7; }

.sol__l b { color: #fff; font-weight: 700; }

.sol__l { display: flex; flex-direction: column; gap: 10px; }
.sol__l li {
  position: relative; padding-left: 25px;
  font-size: 15px; color: #cddaeb; line-height: 1.65;
}
.sol__l li::before {
  content: ""; position: absolute; left: 4px; top: 9px;
  width: 7px; height: 7px; border-radius: 2px;
  background: var(--blue); box-shadow: 0 0 0 3px rgba(0, 102, 255, .16);
}
.sol__l--grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 8px; }

.solcta {
  margin-top: 28px; padding: 30px 32px; border-radius: 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 26px; flex-wrap: wrap;
  background: linear-gradient(120deg, rgba(0, 102, 255, .16), rgba(255, 255, 255, .02));
  border: 1px solid var(--blue-line);
}
.solcta b { display: block; font-size: 18px; font-weight: 700; letter-spacing: -.025em; margin-bottom: 6px; }
.solcta p { font-size: 14px; color: var(--tx-2); }
.solcta .btn { flex-shrink: 0; }

/* ---------- 8. Security & VPN ---------- */
.sec--sec { overflow: hidden; border-top: 1px solid var(--line); }
/* Unsplash - Cyber security / network */
.sec__bg {
  position: absolute; inset: 0;
  background:
    url("https://images.unsplash.com/photo-1550751827-4bd374c3f58b?auto=format&fit=crop&w=1920&q=80")
    center/cover no-repeat;
  filter: grayscale(.5) brightness(.5);
}
.sec__veil {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 520px at 78% 42%, rgba(0, 102, 255, .3), transparent 62%),
    linear-gradient(180deg, var(--bg) 0%, rgba(7, 10, 17, .93) 30%, rgba(7, 10, 17, .95) 70%, var(--bg) 100%);
}
.vpn { position: relative; z-index: 2; display: grid; grid-template-columns: 1.03fr .97fr; gap: clamp(40px, 6vw, 76px); align-items: center; }

.vpn__list { margin: 32px 0 36px; display: flex; flex-direction: column; gap: 20px; }
.vpn__list li { display: flex; gap: 16px; }
.vic {
  flex-shrink: 0; width: 44px; height: 44px; border-radius: 13px; display: grid; place-items: center;
  background: rgba(0, 102, 255, .14); border: 1px solid var(--blue-line); color: var(--blue-l);
}
.vic svg { width: 21px; height: 21px; }
.vpn__list b { display: block; font-size: 16.5px; font-weight: 700; margin-bottom: 5px; }
.vpn__list p { font-size: 14.5px; color: var(--tx-2); line-height: 1.78; }

/* 다이어그램 */
.diag {
  padding: 34px 28px; border-radius: 22px;
  background: rgba(9, 13, 24, .78);
  border: 1px solid var(--line-2);
  box-shadow: var(--sh); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.diag__node {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 18px; border-radius: 14px;
  background: rgba(255, 255, 255, .045); border: 1px solid var(--line);
}
.diag__node b { font-size: 15.5px; font-weight: 700; display: block; }
.diag__node em { font-style: normal; font-size: 12.5px; color: var(--tx-3); }
.nic {
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  background: var(--blue-soft); color: var(--blue-l); flex-shrink: 0;
}
.nic svg { width: 20px; height: 20px; }
.diag__node--k { border-color: var(--blue-line); }
.diag__node--fw .nic { background: rgba(0, 102, 255, .2); color: #fff; }

.diag__pipe { position: relative; margin: 14px 0; padding: 16px 0; text-align: center; }
.diag__lbl {
  display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: .1em;
  color: var(--blue-l); margin-bottom: 10px;
}
.diag__line {
  position: relative; height: 3px; border-radius: 3px;
  background: repeating-linear-gradient(90deg, var(--blue-line) 0 8px, transparent 8px 16px);
  overflow: hidden;
}
.diag__line i {
  position: absolute; top: -2.5px; width: 8px; height: 8px; border-radius: 50%;
  background: var(--blue-l); box-shadow: 0 0 12px var(--blue);
  animation: dash 2.6s linear infinite;
}
.diag__line i:nth-child(2) { animation-delay: .87s; }
.diag__line i:nth-child(3) { animation-delay: 1.74s; }
@keyframes dash { from { left: -3%; } to { left: 103%; } }

.diag__lock {
  position: absolute; left: 50%; bottom: -6px; translate: -50% 0;
  width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  background: var(--blue); color: #fff; box-shadow: 0 0 0 5px rgba(0, 102, 255, .16);
}
.diag__lock svg { width: 15px; height: 15px; }

.diag__arrow { display: grid; place-items: center; color: var(--blue-l); opacity: .55; margin: 10px 0; }
.diag__arrow svg { width: 20px; height: 20px; animation: bob 2s ease-in-out infinite; }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(5px); } }

.diag__zone { padding: 18px; border-radius: 16px; border: 1px dashed var(--blue-line); background: rgba(0, 102, 255, .05); }
.diag__zt {
  display: block; font-size: 11.5px; font-weight: 700; letter-spacing: .1em;
  color: var(--tx-3); text-align: center; margin-bottom: 14px;
}
.diag__gr { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.diag__srv {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 14px 8px; border-radius: 12px;
  background: rgba(255, 255, 255, .05); border: 1px solid var(--line);
  transition: border-color .25s, background .25s;
}
.diag__srv:hover { border-color: var(--blue-line); background: rgba(0, 102, 255, .1); }
.diag__srv svg { width: 22px; height: 22px; color: var(--blue-l); }
.diag__srv span { font-size: 10.5px; font-weight: 700; letter-spacing: .06em; color: var(--tx-2); }

/* ---------- 9. Contact ---------- */
.ct { display: grid; grid-template-columns: .82fr 1.18fr; gap: 24px; align-items: start; }

.ct__info {
  padding: 34px 30px; border-radius: 20px;
  background: linear-gradient(165deg, rgba(0, 102, 255, .14), rgba(255, 255, 255, .02));
  border: 1px solid var(--blue-line);
  position: sticky; top: calc(var(--hd-h) + 20px);
}
.ct__info h3 { font-size: 18px; font-weight: 800; margin-bottom: 22px; letter-spacing: -.02em; }
.ct__list { display: flex; flex-direction: column; gap: 18px; }
.ct__list li { display: flex; gap: 14px; align-items: center; }
.cic {
  flex-shrink: 0; width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(255, 255, 255, .07); border: 1px solid var(--line); color: var(--blue-l);
}
.cic svg { width: 20px; height: 20px; }
.ct__list em { display: block; font-style: normal; font-size: 11.5px; color: var(--tx-3); font-weight: 600; letter-spacing: .06em; }
.ct__list b { font-size: 16.5px; font-weight: 700; letter-spacing: -.01em; }
.ct__list a:hover b { color: var(--blue-l); text-decoration: underline; text-underline-offset: 3px; }

.ct__note { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--line); }
.ct__note b { display: block; font-size: 14px; font-weight: 700; margin-bottom: 8px; color: var(--blue-l); }
.ct__note p { font-size: 13.5px; color: var(--tx-2); line-height: 1.8; }

.ct__form { padding: 34px 32px; border-radius: 20px; background: var(--card); border: 1px solid var(--line); }

.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.fd { position: relative; margin-bottom: 10px; }
.fd label { display: block; font-size: 13.5px; font-weight: 700; color: var(--tx-2); margin-bottom: 6px; }
.fd label i, .agree i { font-style: normal; color: var(--blue-l); }

.fd input, .fd textarea, .fd select {
  width: 100%; padding: 13px 15px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--line); border-radius: 11px;
  font-size: 14.5px; color: var(--tx);
  transition: border-color .2s, background .2s, box-shadow .2s;
}
.fd textarea { resize: vertical; min-height: 80px; line-height: 1.65; }
.fd input::placeholder, .fd textarea::placeholder { color: #55637d; }
.fd input:focus, .fd textarea:focus, .fd select:focus {
  outline: none; border-color: var(--blue);
  background: rgba(0, 102, 255, .07);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, .16);
}
.fd input:user-invalid, .fd textarea:user-invalid, .fd select:user-invalid { border-color: #ef4444; }

.sel { position: relative; }
.sel select { appearance: none; -webkit-appearance: none; padding-right: 42px; cursor: pointer; }
.sel select option { background: var(--bg-3); color: var(--tx); }
.sel svg { position: absolute; right: 14px; top: 50%; translate: 0 -50%; width: 18px; height: 18px; color: var(--tx-3); pointer-events: none; }

.cnt { position: absolute; right: 4px; bottom: -19px; font-size: 11.5px; color: var(--tx-3); font-family: var(--mono); }
.cnt b { color: var(--blue-l); }

.agree { display: flex; gap: 11px; align-items: flex-start; margin: 12px 0 10px; cursor: pointer; }
.agree input {
  flex-shrink: 0; width: 18px; height: 18px; margin-top: 2px;
  accent-color: var(--blue); cursor: pointer;
}
.agree span { font-size: 13px; color: var(--tx-2); line-height: 1.7; }

.gotcha { position: absolute !important; left: -9999px !important; opacity: 0; height: 0; width: 0; }

.fnote { margin-top: 14px; font-size: 12.5px; color: var(--tx-3); text-align: center; }

.fmsg { margin-top: 14px; padding: 0; border-radius: 11px; font-size: 14px; line-height: 1.7; }
.fmsg:empty { display: none; }
.fmsg.is-ok { padding: 14px 16px; background: rgba(34, 197, 94, .12); border: 1px solid rgba(34, 197, 94, .38); color: #7ee2a8; }
.fmsg.is-err { padding: 14px 16px; background: rgba(239, 68, 68, .1); border: 1px solid rgba(239, 68, 68, .35); color: #ff9d9d; }
.fmsg.is-wait { padding: 14px 16px; background: var(--blue-soft); border: 1px solid var(--blue-line); color: var(--blue-l); }

/* ---------- 10. Footer ---------- */
.ft { background: var(--bg-2); border-top: 1px solid var(--line); padding: 68px 0 30px; }
.ft__top { display: grid; grid-template-columns: .9fr 2.1fr; gap: 50px; padding-bottom: 44px; border-bottom: 1px solid var(--line); }
.logo--ft .logo__w { font-size: 31px; }
.logo--ft .logo__tx em { font-size: 14.5px; }
.ft__slogan { margin-top: 18px; font-size: 13.5px; color: var(--tx-3); line-height: 1.85; }

.ft__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px; }
.ft__col h4 { font-size: 13px; font-weight: 700; color: var(--blue-l); letter-spacing: .08em; margin-bottom: 16px; }
.ft__col dl { display: flex; flex-direction: column; gap: 11px; }
.ft__col dl > div { display: flex; gap: 10px; font-size: 13.5px; line-height: 1.65; }
.ft__col dt { flex-shrink: 0; min-width: 88px; color: var(--tx-3); font-weight: 600; }
.ft__col dd { color: var(--tx-2); }
.ft__col dd a:hover { color: var(--blue-l); text-decoration: underline; text-underline-offset: 3px; }

.ft__bot {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px;
  padding-top: 24px; font-size: 12.5px; color: var(--tx-3);
}
.ft__dm { font-family: var(--mono); letter-spacing: .06em; color: var(--blue-l); }

/* ---------- 11. To-top ---------- */
.top {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center;
  background: var(--blue); color: #fff; box-shadow: var(--sh-blue);
  opacity: 0; visibility: hidden; transform: translateY(14px); transition: .3s;
}
.top.is-on { opacity: 1; visibility: visible; transform: translateY(0); }
.top:hover { background: var(--blue-l); transform: translateY(-3px); }
.top svg { width: 19px; height: 19px; }

/* ---------- 12. Reveal ---------- */
.rv { opacity: 0; transform: translateY(24px); transition: opacity .7s cubic-bezier(.4, 0, .2, 1), transform .7s cubic-bezier(.4, 0, .2, 1); }
.rv.is-in { opacity: 1; transform: none; }

/* ---------- 13. Responsive ---------- */

/* 대형 모니터: 콘텐츠 폭과 본문 글자를 한 단계 키운다.
   히어로 제목·섹션 제목은 clamp(vw) 이므로 이미 함께 커진다. */
@media (min-width: 1500px) {
  :root { --wrap: 1440px; --hd-h: 100px; }

  .sec { padding: 26px 0 92px; }
  .sec__d { font-size: 18px; }
  .head { max-width: 860px; margin-bottom: 20px; }
  .head--sub { margin-top: 70px; }

  .nav a { font-size: 18.5px; padding: 11px 18px; }
  .btn--sm { height: 48px; padding: 0 22px; font-size: 16px; }
  .btn--lg { height: 60px; padding: 0 36px; font-size: 17px; }

  .logo__mk { width: 56px; height: 56px; }
  .logo__w { font-size: 31px; }
  .logo__tx em { font-size: 15px; }

  .hero__d { font-size: 20px; }
  .hero__st { max-width: 880px; }
  .hero__st li { padding: 26px 24px; }
  .hero__st span { font-size: 16.5px; }
  .hero__st em { font-size: 14.5px; }

  .about__pts b { font-size: 18.5px; }
  .about__pts p { font-size: 16px; }

  .card { padding: 34px 30px 32px; }
  .card__t { font-size: 23px; }
  .card__t2 { font-size: 17.5px; }
  .card__d { font-size: 17px; }
  .spec li { font-size: 14.5px; padding: 7px 15px; }
  .cardnote { padding: 17px 18px; }
  .cardnote b { font-size: 15.5px; }
  .cardnote p { font-size: 14.5px; }

  .sc { padding: 30px 28px; }
  .sc b { font-size: 19px; }
  .sc p { font-size: 16px; }

  .sol { padding: 34px 32px; }
  .sol__t { font-size: 23px; }
  .sol__s { font-size: 14.5px; }
  .sol__d { font-size: 17px; }
  .sol__l li { font-size: 16.5px; }
  .solnote b { font-size: 15.5px; }
  .solnote p { font-size: 14.5px; }
  .solcta b { font-size: 20px; }
  .solcta p { font-size: 15.5px; }

  .vpn__list b { font-size: 18px; }
  .vpn__list p { font-size: 16px; }
  .diag__node b { font-size: 17px; }
  .diag__node em { font-size: 13.5px; }

  .ct__info h3 { font-size: 20px; }
  .ct__list b { font-size: 18px; }
  .ct__list em { font-size: 12.5px; }
  .ct__note p { font-size: 15px; }
  .fd label { font-size: 15px; }
  .fd input, .fd textarea, .fd select { font-size: 16px; padding: 13px 16px; }
  .agree span { font-size: 14.5px; }
  .ct__form { padding: 22px 26px; }
  .btn--lg { height: 56px; }

  .ft__col h4 { font-size: 14px; }
  .ft__col dl > div { font-size: 15px; }
  .ft__slogan { font-size: 15px; }
}

@media (max-width: 1080px) {
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about, .vpn, .ct { grid-template-columns: 1fr; }
  .about__R { min-height: 400px; order: -1; }
  .ct__info { position: static; }
  .ft__top { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 900px) {
  :root { --hd-h: 76px; }
  .logo__mk { width: 42px; height: 42px; border-radius: 13px; }
  .logo__w { font-size: 24px; }
  .logo__tx em { font-size: 12px; margin-top: 5px; }
  .nav {
    position: fixed; inset: var(--hd-h) 0 auto 0;
    flex-direction: column; gap: 0; padding: 12px 20px 24px;
    background: rgba(7, 10, 17, .97); backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-140%); transition: transform .35s cubic-bezier(.4, 0, .2, 1);
  }
  .nav.is-open { transform: translateY(0); }
  .nav a { padding: 15px 8px; border-radius: 10px; font-size: 16px; border-bottom: 1px solid var(--line); }
  .nav a.is-cur::after { display: none; }
  .burger { display: flex; margin-left: auto; }
  .hd__cta { display: none; }
  .scopes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero__st { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero__wm { display: none; }
  /* 솔루션 카드는 내용이 많아 2열이면 제목이 깨진다. 이 구간부터 1열로 */
  .sols { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .wrap { padding: 0 18px; }
  .sec { padding: 52px 0 66px; }
  .head { margin-bottom: 40px; }
  .head--sub { margin-top: 64px; }
  .cards, .scopes, .row, .sols, .sol__l--grid { grid-template-columns: 1fr; }
  .sol__hd { flex-wrap: wrap; }
  .tag { margin-left: 0; }
  .solcta { padding: 24px 20px; }
  .solcta .btn { width: 100%; }
  .brk { display: none; }
  .hero { min-height: auto; padding-top: calc(var(--hd-h) + 70px); }
  .hero__in { padding-bottom: 66px; }
  .hero__btns .btn { width: 100%; }
  .about__R { min-height: 340px; }
  .shot--a img { height: 250px; }
  .shot--b img { height: 160px; }
  .ct__form, .ct__info, .diag, .sol { padding: 24px 20px; }
  .ft__cols { grid-template-columns: 1fr; gap: 26px; }
  .ft__bot { justify-content: center; text-align: center; }
  .top { right: 14px; bottom: 14px; }
}

/* ---------- 14. Motion / Print ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .rv { opacity: 1; transform: none; }
}

@media print {
  .hd, .top, .ticker, .hero__bg, .hero__grid, .sec__bg { display: none !important; }
  body { background: #fff; color: #000; }
}