/* cxVisor 랜딩 — 다크 히어로 + 라이트 본문. 제품 스크린샷이 어두운 보라 톤이라
   히어로/최종 CTA만 다크로 두고 본문은 밝게 간다. */

:root {
  --ink: #16181d;
  --sub: #5c6270;
  --line: #e5e7ec;
  --paper: #ffffff;
  --paper-alt: #f7f8fa;
  --card: #ffffff;
  --blue: #4a3aff;
  --blue-ink: #3428d6;
  --dark: #12102a;
  --dark-2: #1b1840;
  --dark-ink: #eceaff;
  --dark-sub: #a6a1d6;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 18, 29, .04), 0 8px 24px rgba(16, 18, 29, .06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Fira Sans", -apple-system, BlinkMacSystemFont, "Segoe UI",
               "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-ink); }
code {
  font-family: "Fira Code", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .92em;
  background: rgba(74, 58, 255, .07);
  color: var(--blue-ink);
  padding: .1em .38em;
  border-radius: 5px;
}

/* ---------- 네비 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav .brand { font-weight: 700; font-size: 21px; letter-spacing: -.02em;
              text-decoration: none; color: var(--ink); }
.nav nav { display: flex; align-items: center; gap: 18px; }
.nav nav a { text-decoration: none; color: var(--sub); font-size: 15px; }
.nav nav a:hover { color: var(--ink); }

/* ---------- 버튼 ---------- */
.btn {
  display: inline-block; text-decoration: none; font-weight: 600;
  padding: 10px 20px; border-radius: 9px; font-size: 15px;
  border: 1px solid transparent; transition: transform .06s ease, box-shadow .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-lg { padding: 15px 30px; font-size: 17px; }
.btn-primary { background: var(--blue); color: #fff !important;
               box-shadow: 0 6px 18px rgba(74, 58, 255, .28); }
.btn-primary:hover { background: var(--blue-ink); }
.btn-outline { border-color: rgba(255, 255, 255, .35); color: var(--dark-ink) !important; }
.btn-outline:hover { background: rgba(255, 255, 255, .08); }
.btn-ghost-light { border-color: rgba(255, 255, 255, .3); color: #fff !important; }
/* 라이트 배경 위의 outline (요금 카드) */
.band .btn-outline { border-color: var(--line); color: var(--ink) !important; }
.band .btn-outline:hover { background: var(--paper-alt); }
/* 네비의 CTA */
.nav .cta { background: var(--blue); color: #fff !important; padding: 8px 16px;
            border-radius: 8px; font-weight: 600; }

/* ---------- 히어로 ---------- */
.hero {
  background: radial-gradient(1100px 600px at 15% 0%, #2a2266 0%, var(--dark) 55%);
  color: var(--dark-ink);
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  padding: 84px 28px 96px;
}
.hero-copy { max-width: 620px; margin-left: auto; }
.hero .eyebrow { color: #a99cff; }
.hero h1 { font-size: 50px; line-height: 1.18; letter-spacing: -.03em; margin: 8px 0 20px; }
.hero h1 em { font-style: normal; color: #a99cff; }
.hero .lead { font-size: 18px; color: var(--dark-sub); margin: 0 0 28px; }
.hero .lead b { color: var(--dark-ink); }
.hero code { background: rgba(169, 156, 255, .16); color: #cfc8ff; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-cta.center { justify-content: center; }
.hero .note { font-size: 14px; color: var(--dark-sub); margin-top: 16px; }
.hero-stats { list-style: none; display: flex; gap: 32px; padding: 0;
              margin: 36px 0 0; flex-wrap: wrap; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats b { font-size: 22px; color: #fff; }
.hero-stats span { font-size: 13px; color: var(--dark-sub); }
.hero-shot img {
  border-radius: 16px; border: 1px solid rgba(255, 255, 255, .1);
  box-shadow: 0 24px 70px rgba(0, 0, 0, .45); max-width: 720px;
}

/* ---------- 섹션 공통 ---------- */
.band { padding: 88px 28px; }
.band-alt { background: var(--paper-alt); }
.band-inner { max-width: 1120px; margin: 0 auto; }
.band-inner.narrow { max-width: 760px; }
.band-inner.center { text-align: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: 12px;
           font-weight: 700; color: var(--blue-ink); margin: 0 0 6px; }
.band h2 { font-size: 34px; line-height: 1.3; letter-spacing: -.02em; margin: 0 0 14px; }
.band h2 em { font-style: normal; color: var(--blue-ink); }
.lead { font-size: 18px; color: var(--sub); }
.lead.center { text-align: center; max-width: 720px; margin: 0 auto 48px; }

/* 인스턴트 데모 (강조 밴드) */
.band-accent {
  background: linear-gradient(180deg, #f3f1ff 0%, #fbfaff 100%);
  border-top: 1px solid #e6e2ff; border-bottom: 1px solid #e6e2ff;
}
.band-accent .band-inner { max-width: 860px; text-align: center; }
.band-accent .lead { margin: 0 auto 32px; }
.steps { list-style: none; counter-reset: s; padding: 0; margin: 0 0 36px;
         text-align: left; display: grid; gap: 12px; }
.steps li { counter-increment: s; background: #fff; border: 1px solid #e6e2ff;
            border-radius: 12px; padding: 16px 18px 16px 58px; position: relative; }
.steps li::before {
  content: counter(s); position: absolute; left: 16px; top: 14px;
  width: 28px; height: 28px; border-radius: 50%; background: var(--blue); color: #fff;
  font-size: 14px; font-weight: 700; display: grid; place-items: center;
}
.steps li b { display: block; }
.steps li span { color: var(--sub); font-size: 15px; }

/* 카드 */
.cards { display: grid; gap: 22px; }
.cards-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.cards-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
        padding: 26px; box-shadow: var(--shadow); }
.card h3 { margin: 0 0 10px; font-size: 19px; }
.card p { margin: 0; color: var(--sub); }
.card.num { position: relative; padding-top: 34px; }
.card.num::before {
  content: attr(data-n); position: absolute; top: -14px; left: 24px;
  width: 32px; height: 32px; border-radius: 9px; background: var(--blue); color: #fff;
  font-weight: 700; display: grid; place-items: center; box-shadow: var(--shadow);
}

/* 기능 (이미지 + 카피 교차) */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
           padding: 44px 0; border-top: 1px solid var(--line); }
.feature:first-of-type { border-top: 0; }
.feature.reverse .feature-copy { order: 2; }
.kicker { font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
          color: var(--blue-ink); margin: 0 0 6px; }
.feature h3 { font-size: 27px; line-height: 1.32; letter-spacing: -.02em; margin: 0 0 12px; }
.feature > .feature-copy > p { color: var(--sub); margin: 0 0 18px; }
.feature-shot img { border-radius: 14px; border: 1px solid var(--line); box-shadow: var(--shadow); }

.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.ticks li { padding-left: 26px; position: relative; color: var(--sub); font-size: 15.5px; }
.ticks li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--blue); font-weight: 700;
}
.ticks li b { color: var(--ink); }

/* 투어 / 스펙 그리드 */
/* 제품 투어는 4장을 2×2로 고정한다 — auto-fit 은 폭에 따라 3+1로 흘러 마지막 한 장이
   외따로 떨어진다. 콘솔 섹션(.tour-4)은 4열 유지. */
.tour { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.tour-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.tour figure { margin: 0; }
/* 제품 투어 스샷은 전부 세로형 모바일(비율 0.6)이다. 폭에 맞추면 2열에서 높이가 900px까지
   늘어나 화면을 잡아먹는다 — 높이로 제한해 실제 휴대폰만 한 크기로 세우고 가운데 정렬한다. */
.tour img { border-radius: 12px; border: 1px solid var(--line); box-shadow: var(--shadow);
            margin: 0 auto 16px; max-height: 440px; width: auto; }
/* 콘솔 스샷은 가로형이라 높이 제한이 필요 없다 */
.tour-4 img { max-height: none; width: 100%; }
.tour figcaption { font-size: 15px; color: var(--sub); text-align: center; }
.tour-4 figcaption { text-align: left; }
.tour figcaption b { color: var(--ink); }

.specs { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.spec { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
        padding: 22px; box-shadow: var(--shadow); }
.spec img { border-radius: 10px; border: 1px solid var(--line); margin-bottom: 16px; }
.spec h3 { font-size: 18px; margin: 0 0 12px; }
.spec ul { padding-left: 18px; margin: 0; color: var(--sub); font-size: 15px; }
.spec li { margin: 6px 0; }
.spec li b { color: var(--ink); }

/* 코드블록 */
.codeblock { margin-top: 40px; background: var(--dark); border-radius: var(--radius);
             padding: 22px 24px; overflow-x: auto; }
.code-label { color: var(--dark-sub); font-size: 13px; margin: 0 0 10px; }
.code-label code { background: rgba(169, 156, 255, .16); color: #cfc8ff; }
.codeblock pre { margin: 0; }
.codeblock code { background: none; color: #d8d4ff; font-size: 14.5px; padding: 0; }

/* 사양 표 */
.spectable { width: 100%; border-collapse: collapse; font-size: 15.5px; }
.spectable th, .spectable td { text-align: left; vertical-align: top;
                               padding: 15px 14px; border-top: 1px solid var(--line); }
.spectable th { width: 160px; color: var(--ink); font-weight: 600; white-space: nowrap; }
.spectable td { color: var(--sub); }
.spectable tr:first-child th, .spectable tr:first-child td { border-top: 0; }

/* 고객 사례 */
.cases { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 22px; }
.cases figure { margin: 0; background: var(--card); border: 1px solid var(--line);
                border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); }
.cases img { aspect-ratio: 16 / 10; object-fit: cover; width: 100%; }
.cases figcaption { padding: 14px 16px; font-weight: 600; font-size: 15px; }
.cases figcaption span { font-weight: 400; color: var(--sub); font-size: 13.5px; }

/* 요금 카드 */
.card.price .price-tag { font-size: 30px; font-weight: 700; color: var(--ink);
                         margin: 0 0 18px; letter-spacing: -.02em; }
.card.price .price-tag span { font-size: 14px; font-weight: 400; color: var(--sub); }
.card.price .ticks { margin-bottom: 22px; }

/* FAQ */
details { border-bottom: 1px solid var(--line); padding: 18px 0; }
summary { font-weight: 600; cursor: pointer; font-size: 17px; list-style: none; position: relative;
          padding-right: 28px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; top: -2px;
                 color: var(--blue); font-size: 22px; font-weight: 400; }
details[open] summary::after { content: "−"; }
details p { color: var(--sub); margin: 12px 0 0; }

/* 최종 CTA */
.band-cta { background: radial-gradient(900px 400px at 50% 0%, #2a2266 0%, var(--dark) 60%);
            color: var(--dark-ink); }
.band-cta h2 { color: #fff; font-size: 38px; }
.band-cta .lead { color: var(--dark-sub); margin-bottom: 28px; }
.band-cta .note { color: var(--dark-sub); font-size: 14px; margin-top: 20px; }
.band-cta .note a { color: #cfc8ff; }

/* 푸터 */
footer { border-top: 1px solid var(--line); padding: 32px 28px; text-align: center;
         color: var(--sub); font-size: 14px; }

/* ---------- 반응형 ---------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding: 56px 22px 64px; gap: 36px; }
  .hero-copy { margin-left: 0; }
  .hero h1 { font-size: 34px; }
  .hero-shot img { max-width: 100%; }
  .feature { grid-template-columns: 1fr; gap: 28px; padding: 34px 0; }
  .feature.reverse .feature-copy { order: 0; }
  .tour { grid-template-columns: 1fr; }   /* 2×2 → 세로 1열 */
  .band { padding: 60px 22px; }
  .band h2 { font-size: 27px; }
  .band-cta h2 { font-size: 28px; }
  .nav { padding: 12px 18px; }
  .nav nav { gap: 12px; }
  .spectable th { width: auto; }
  .spectable th, .spectable td { display: block; padding: 8px 0; }
  .spectable td { border-top: 0; padding-top: 0; padding-bottom: 16px; }
}

/* ---------- 다크 모드 ---------- */
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e9eaee; --sub: #a0a5b3; --line: #2b2e38;
    --paper: #14161b; --paper-alt: #191c22; --card: #1b1e25;
    --blue-ink: #a99cff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35);
  }
  .nav { background: rgba(20, 22, 27, .86); }
  .band-accent { background: linear-gradient(180deg, #1c1a30 0%, #16161f 100%);
                 border-color: #2e2a52; }
  .steps li { background: var(--card); border-color: #2e2a52; }
  code { background: rgba(169, 156, 255, .12); color: #cfc8ff; }
}