:root {
  --bg: #0a0a0b;
  --bg-2: #131316;
  --bg-3: #1c1c20;
  --line: #2a2a30;
  --line-soft: #1d1d22;
  --fg: #ffffff;
  --fg-2: #d9d9de;
  --fg-3: #a9a9b2;
  --fg-4: #777780;
  --paper: #ffffff;
  --paper-2: #f5f5f6;
  --ink: #0a0a0b;
  --green: #b9ffd3;
  --accent: #93c5fd;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-feature-settings: "ss01","cv09";
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, #000 0, transparent 70%);
}
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 4px; }
.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 200;
  transform: translateY(-140%);
  background: var(--green);
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 6px;
  font-weight: 800;
}
.skip-link:focus { transform: translateY(0); }
.ad-header {
  position: sticky;
  top: 0;
  z-index: 80;
  height: 64px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  padding: 0 clamp(18px, 5vw, 54px);
  background: rgba(10,10,11,0.86);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line-soft);
}
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--fg); font-size: 12px; font-weight: 800; letter-spacing: 0.26em; }
.brand-mark { width: 26px; height: 26px; display: inline-flex; }
.brand-mark svg { width: 100%; height: 100%; }
.ad-nav { display: flex; justify-content: flex-end; gap: 4px; }
.ad-nav a {
  color: var(--fg-2);
  font-size: 13px;
  padding: 8px 11px;
  border-radius: 999px;
}
.ad-nav a:hover { background: rgba(255,255,255,0.08); color: var(--fg); }
.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 13px 18px;
  font-weight: 850;
  letter-spacing: 0;
  border: 1px solid transparent;
  text-align: center;
}
.btn-primary {
  background: var(--fg);
  color: var(--ink);
  box-shadow: 0 12px 34px rgba(255,255,255,0.14);
}
.btn-primary:hover { transform: translateY(-1px); }
.header-cta { min-height: 40px; padding: 9px 15px; font-size: 13px; }
main { overflow: clip; }
.hero {
  min-height: calc(100svh - 64px);
  display: flex;
  align-items: center;
  padding: clamp(58px, 8vw, 96px) clamp(20px, 5vw, 56px) clamp(42px, 6vw, 80px);
  scroll-margin-top: 84px;
}
.hero-inner {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(310px, 0.72fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.18em;
}
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(42px, 7.2vw, 84px);
  line-height: 1.04;
  letter-spacing: 0;
}
.hero-lead {
  margin: 24px 0 0;
  max-width: 660px;
  color: var(--fg-2);
  font-size: clamp(17px, 2vw, 22px);
}
.hero-product {
  width: min(100%, 480px);
  margin: 28px 0 0;
  padding: 18px 20px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-radius: 8px;
}
.hero-product span { color: var(--fg-2); font-weight: 750; }
.hero-product strong { font-size: clamp(28px, 4vw, 42px); line-height: 1; }
.notice-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  color: var(--fg-2);
}
.notice-list li::before { content: "확인"; color: var(--green); font-size: 12px; font-weight: 900; margin-right: 8px; }
.hero-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 28px; }
.scope-link { color: var(--fg-2); text-decoration: underline; text-underline-offset: 5px; }
.hero-panel {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.035));
  border-radius: 8px;
  padding: 24px;
}
.panel-top span { color: var(--fg-3); font-size: 12px; letter-spacing: 0.16em; font-weight: 800; }
.panel-top strong { display: block; margin-top: 8px; font-size: 20px; line-height: 1.3; }
.flow-list { list-style: none; margin: 22px 0 0; padding: 0; display: grid; gap: 12px; }
.flow-list li { display: grid; grid-template-columns: 42px 1fr; gap: 12px; color: var(--fg-2); }
.flow-list span { color: var(--green); font-family: var(--font-mono); font-weight: 800; }
.trust-strip {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px clamp(20px, 5vw, 56px) 42px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.trust-strip div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: var(--bg-2);
}
.trust-strip strong { display: block; font-size: 20px; }
.trust-strip span { color: var(--fg-3); font-size: 14px; }
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(64px, 9vw, 108px) clamp(20px, 5vw, 56px);
  scroll-margin-top: 84px;
}
.section-muted {
  max-width: none;
  background: var(--paper);
  color: var(--ink);
}
.section-muted > * { max-width: var(--max); margin-left: auto; margin-right: auto; }
.section-muted .eyebrow { color: #42536a; }
.section-head { margin-bottom: 30px; }
.section h2 {
  margin: 0;
  font-size: clamp(30px, 5vw, 56px);
  line-height: 1.08;
}
.problem-grid, .tech-grid, .case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.problem-grid article, .tech-grid article, .case-grid article {
  border: 1px solid var(--line);
  background: var(--bg-2);
  border-radius: 8px;
  padding: 18px;
}
.problem-grid span {
  display: block;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: var(--green);
  margin-bottom: 14px;
}
.problem-grid h3, .tech-grid h3, .case-grid h3 { margin: 0; font-size: 18px; line-height: 1.35; }
.tech-grid { grid-template-columns: repeat(5, 1fr); }
.tech-grid article { background: var(--paper-2); border-color: #e2e2e5; }
.tech-grid p { margin: 10px 0 0; color: #4b4b54; font-size: 15px; }
.deliverable-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.58fr);
  gap: 28px;
  align-items: center;
}
.deliverable-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: deliverable;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.deliverable-list li {
  counter-increment: deliverable;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: var(--bg-2);
  color: var(--fg-2);
}
.deliverable-list li::before {
  content: counter(deliverable, decimal-leading-zero);
  display: block;
  color: var(--green);
  font-family: var(--font-mono);
  font-weight: 850;
  margin-bottom: 10px;
}
.report-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  min-height: 360px;
  background: var(--paper);
}
.report-line { height: 12px; width: 66%; border-radius: 999px; background: #d7d7dc; margin-bottom: 12px; }
.report-line.wide { height: 18px; width: 88%; background: #16161a; }
.report-block { margin: 34px 0; display: grid; gap: 10px; }
.report-block span { height: 42px; border-radius: 8px; background: #ececf0; }
.report-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.report-grid span { height: 54px; border-radius: 8px; background: #f3f3f6; }
.scope-section { max-width: none; background: #0f1113; }
.scope-card {
  max-width: var(--max);
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(22px, 4vw, 36px);
  background: var(--bg);
}
.scope-card { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: 30px; }
.scope-main h2 { margin: 0; font-size: clamp(30px, 5vw, 54px); }
.scope-price { font-size: clamp(42px, 6vw, 72px); font-weight: 900; line-height: 1; margin-top: 18px; }
.scope-desc { color: var(--fg-2); margin: 20px 0 24px; }
.scope-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.scope-columns > div { border: 1px solid var(--line); border-radius: 8px; padding: 18px; background: var(--bg-2); }
.scope-columns h3 { margin: 0 0 12px; display: flex; gap: 8px; align-items: center; }
.scope-columns ul, .scope-notes { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; color: var(--fg-2); }
.scope-columns li::before { content: "- "; color: var(--green); }
.scope-notes { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 20px; }
.scope-notes p { margin: 0; }
.scope-notes strong { color: var(--fg); margin-right: 8px; }
.process-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 10px;
}
.process-list li {
  min-height: 150px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-2);
}
.process-list span { display: block; color: var(--green); font-family: var(--font-mono); font-weight: 900; margin-bottom: 14px; }
.process-list p { margin: 0; color: var(--fg-2); }
.case-grid { grid-template-columns: repeat(3, 1fr); }
.case-grid article { background: var(--paper-2); border-color: #e2e2e5; }
.case-source { margin: 0 0 12px; color: #62626b; font-size: 13px; }
.case-grid dl { display: grid; gap: 10px; margin: 18px 0 0; }
.case-grid div { display: grid; gap: 2px; }
.case-grid dt { font-weight: 900; color: #16161a; }
.case-grid dd { margin: 0; color: #4f4f59; }
.security-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.security-list li { border: 1px solid var(--line); border-radius: 8px; padding: 18px; background: var(--bg-2); color: var(--fg-2); }
.security-list li::before { content: "보안"; display: block; color: var(--green); font-size: 12px; font-weight: 900; margin-bottom: 8px; }
.faq-list { display: grid; gap: 10px; }
details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-2);
  padding: 0;
}
summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 850;
  list-style-position: inside;
}
details p { margin: 0; padding: 0 20px 20px; color: var(--fg-2); }
.final-cta {
  padding: clamp(64px, 10vw, 120px) clamp(20px, 5vw, 56px);
  text-align: center;
  background: var(--paper);
  color: var(--ink);
}
.final-cta > div { max-width: 760px; margin: 0 auto; }
.final-cta h2 { margin: 0; font-size: clamp(34px, 6vw, 68px); line-height: 1.06; }
.final-cta p { color: #4f4f59; font-size: 18px; }
.final-cta .btn-primary { background: var(--ink); color: var(--fg); }
.final-note { font-size: 15px !important; }
.follow-up {
  padding: 26px 20px;
  text-align: center;
  color: var(--fg-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-2);
}
.follow-up p { margin: 0 auto; max-width: 760px; }
.ad-footer { padding: 46px clamp(20px, 5vw, 56px) 34px; background: var(--bg); }
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 28px;
}
.footer-brand { letter-spacing: 0.2em; }
.ad-footer p, .ad-footer address { color: var(--fg-3); font-style: normal; }
.ad-footer address { display: grid; gap: 6px; }
.ad-footer a { text-decoration: underline; text-underline-offset: 4px; }
.footer-bottom { max-width: var(--max); margin: 22px auto 0; color: var(--fg-3); font-size: 13px; }
.mobile-sticky-cta { display: none; }

@media (max-width: 980px) {
  .ad-header { grid-template-columns: auto 1fr; }
  .ad-nav { display: none; }
  .header-cta { justify-self: end; }
  .hero-inner, .scope-card, .deliverable-wrap { grid-template-columns: 1fr; }
  .problem-grid, .tech-grid, .case-grid, .security-list { grid-template-columns: repeat(2, 1fr); }
  .process-list { grid-template-columns: repeat(2, 1fr); }
  .deliverable-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  body { padding-bottom: calc(74px + env(safe-area-inset-bottom)); }
  .ad-header { height: auto; min-height: 60px; padding: 10px 16px; gap: 10px; }
  .brand { letter-spacing: 0.16em; }
  .header-cta { display: none; }
  .hero { min-height: 0; padding: 48px 18px 42px; }
  h1 { font-size: 39px; }
  .hero-lead { font-size: 17px; }
  .hero-product { align-items: flex-start; flex-direction: column; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .btn { width: 100%; }
  .trust-strip { grid-template-columns: 1fr; padding: 0 18px 30px; }
  .section { padding: 56px 18px; }
  .problem-grid, .tech-grid, .case-grid, .security-list, .deliverable-list, .scope-columns, .process-list { grid-template-columns: 1fr; }
  .process-list li { min-height: 0; }
  .footer-inner { flex-direction: column; }
  .mobile-sticky-cta {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: calc(10px + env(safe-area-inset-bottom));
    z-index: 70;
    display: flex;
    min-height: 52px;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: var(--fg);
    color: var(--ink);
    font-weight: 900;
    box-shadow: 0 12px 34px rgba(0,0,0,0.45);
    padding: 13px 16px;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}