:root {
  --ink: #07080b;
  --ink-2: #101216;
  --paper: #f8f7f2;
  --paper-2: #ebe8df;
  --white: #ffffff;
  --muted: #8b919d;
  --muted-dark: #5e6470;
  --blue: #0047ff;
  --line: rgba(255, 255, 255, .12);
  --line-dark: rgba(7, 8, 11, .12);
  --max: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  word-break: keep-all;
  letter-spacing: -.015em;
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 18px clamp(18px, 4vw, 56px);
  background: rgba(7, 8, 11, .72);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: -.04em;
}

.brand strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -.02em;
}

.brand em {
  display: block;
  margin-top: 3px;
  color: rgba(248, 247, 242, .48);
  font-size: 9px;
  font-style: normal;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
}

nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: rgba(248, 247, 242, .62);
  font-size: 13px;
  font-weight: 500;
}

nav a:hover { color: var(--paper); }

.nav-cta {
  padding: 10px 15px;
  border: 1px solid rgba(248, 247, 242, .34);
  color: var(--paper);
  font-size: 12px;
  font-weight: 700;
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: 100svh;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 24%, rgba(0, 71, 255, .20), transparent 28%),
    linear-gradient(130deg, #07080b 0%, #07080b 60%, #0e1834 100%);
}

.hero-noise {
  position: absolute;
  inset: 0;
  opacity: .48;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: linear-gradient(90deg, #000 0%, transparent 76%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(var(--max), calc(100% - 36px));
  margin: 0 auto;
  padding: 138px 0 86px;
}

.eyebrow,
.section-label,
.card-kicker,
.mini-title {
  margin: 0 0 18px;
  color: #88a7ff;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  max-width: 850px;
  margin-bottom: 28px;
  font-size: clamp(48px, 7.5vw, 104px);
  font-weight: 650;
  line-height: .98;
  letter-spacing: -.04em;
}

.text-accent {
  color: #7ea0ff;
}

.hero-copy {
  max-width: 610px;
  color: rgba(248, 247, 242, .68);
  font-size: clamp(16px, 1.25vw, 19px);
  font-weight: 350;
  line-height: 1.86;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border: 1px solid currentColor;
  font-size: 14px;
  font-weight: 750;
}

.button.primary { border-color: var(--paper); background: var(--paper); color: var(--ink); }
.button.secondary { border-color: rgba(248, 247, 242, .26); background: rgba(255, 255, 255, .04); color: var(--paper); }
.button.ghost { border-color: rgba(248, 247, 242, .16); color: rgba(248, 247, 242, .72); }

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: 680px;
  margin-top: 54px;
  border: 1px solid rgba(255, 255, 255, .09);
  background: rgba(255, 255, 255, .08);
}

.hero-proof div { padding: 20px 22px; background: rgba(7, 8, 11, .56); }
.hero-proof strong { display: block; margin-bottom: 8px; font-size: 24px; font-weight: 650; letter-spacing: -.04em; }
.hero-proof span { color: rgba(248, 247, 242, .52); font-size: 13px; font-weight: 350; }

.section {
  padding: clamp(82px, 8vw, 126px) 18px;
}

.section > * {
  width: min(var(--max), 100%);
  margin-left: auto;
  margin-right: auto;
}

.split,
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .78fr);
  gap: clamp(38px, 7vw, 110px);
  align-items: start;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(34px, 4.8vw, 70px);
  font-weight: 520;
  line-height: 1.12;
  letter-spacing: -.042em;
}

.copy-stack p,
.section-head p,
.ai-card p,
.card-body p,
.price-table p,
.feature-result li,
.process-list span,
.faq-list p,
.final-cta p,
.price-note,
footer p {
  color: var(--muted);
  font-size: clamp(15px, 1.1vw, 17px);
  font-weight: 350;
  line-height: 1.9;
  letter-spacing: -.025em;
}

.copy-stack { display: grid; gap: 16px; max-width: 500px; }
.why { background: var(--ink); }

.need-head {
  align-items: end;
}

.need-head p {
  max-width: 520px;
}

.need-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(190px, 1fr));
  gap: 1px;
  margin-top: 42px;
  border: 1px solid var(--line);
  background: var(--line);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
}

.need-grid article {
  min-height: 250px;
  min-width: 190px;
  padding: 24px;
  background: #0b0d12;
  scroll-snap-align: start;
}

.need-grid span {
  display: block;
  margin-bottom: 78px;
  color: #88a7ff;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .12em;
}

.need-grid h3 {
  margin-bottom: 12px;
  font-size: 25px;
  font-weight: 560;
  letter-spacing: -.035em;
}

.need-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 350;
  line-height: 1.75;
}

.leak-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  margin-top: 18px;
}

.leak-strip div {
  min-height: 96px;
  padding: 20px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .035);
}

.leak-strip strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
  font-weight: 620;
  letter-spacing: -.03em;
}

.leak-strip span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.leak-strip i {
  color: #88a7ff;
  font-style: normal;
  font-weight: 800;
}

.ai-section { background: var(--paper); color: var(--ink); }

.ai-card {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(340px, .68fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
  padding: clamp(28px, 5vw, 64px);
  border: 1px solid rgba(7, 8, 11, .10);
  background: var(--white);
  box-shadow: 0 26px 100px rgba(7, 8, 11, .08);
}

.ai-card h2 { color: var(--ink); }

.ai-section h2 {
  font-size: clamp(32px, 4.15vw, 58px);
  letter-spacing: -.024em;
}

.ai-copy {
  display: grid;
  gap: 10px;
  max-width: 560px;
  margin-top: 24px;
}

.ai-copy p {
  margin: 0;
}

.ai-briefing-note {
  margin-top: 34px;
  padding: 22px 24px;
  border-left: 2px solid var(--blue);
  background: #f2f4fb;
}

.ai-briefing-note span {
  display: block;
  margin-bottom: 10px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.ai-briefing-note strong {
  display: block;
  max-width: 680px;
  font-size: clamp(20px, 2.1vw, 30px);
  font-weight: 520;
  line-height: 1.34;
  letter-spacing: -.035em;
}

.ai-briefing-note p { margin: 14px 0 0; color: var(--muted-dark); }

.ai-checker { padding: 24px; background: var(--ink); color: var(--paper); }

.ai-checker label {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .10);
  color: rgba(248, 247, 242, .70);
  font-size: 13px;
  font-weight: 350;
  cursor: pointer;
}

.ai-checker input { accent-color: var(--blue); }

.score {
  position: relative;
  display: flex;
  align-items: center;
  height: 38px;
  margin-top: 20px;
  overflow: hidden;
  background: rgba(255, 255, 255, .08);
}

.score span { position: relative; z-index: 2; padding-left: 13px; font-size: 13px; font-weight: 800; }
.score i { position: absolute; inset: 0 auto 0 0; width: 100%; background: var(--blue); transition: width .25s ease; }

.price { background: #0b0d12; }

.price .section-head {
  grid-template-columns: minmax(460px, .95fr) minmax(320px, 480px);
  gap: clamp(28px, 5vw, 68px);
  align-items: start;
}

.price .section-head p {
  max-width: 440px;
}

.price h2 {
  max-width: 620px;
  font-size: clamp(34px, 4.2vw, 62px);
  line-height: 1.12;
  letter-spacing: -.032em;
}

.price-table { margin-top: 42px; border-top: 1px solid var(--line); }

.price-table div {
  display: grid;
  grid-template-columns: 230px 160px minmax(0, 1fr);
  gap: 22px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.price-table strong { font-size: 19px; font-weight: 600; letter-spacing: -.04em; }
.price-table span { color: var(--paper); font-size: 20px; font-weight: 650; letter-spacing: -.03em; }
.price-table p { margin-bottom: 0; }

.portfolio { background: var(--paper); color: var(--ink); }
.portfolio .section-label, .portfolio .card-kicker { color: var(--blue); }
.portfolio .section-head p { color: var(--muted-dark); }

.industry-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 40px auto 24px;
}

.tab,
.feature-btn {
  padding: 10px 15px;
  border: 1px solid var(--line-dark);
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-size: 13px;
  font-weight: 650;
}

.tab.is-active,
.feature-btn.is-active { border-color: var(--ink); background: var(--ink); color: var(--paper); }

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(260px, 1fr));
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
}

.portfolio-card {
  min-width: 276px;
  border: 1px solid rgba(7, 8, 11, .12);
  background: #fff;
  scroll-snap-align: start;
}

.portfolio-card.is-hidden { display: none; }

.card-visual {
  position: relative;
  height: 214px;
  overflow: hidden;
  background: #111;
}

.card-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.92) contrast(1.02);
  transition: transform .45s ease;
}

.portfolio-card:hover .card-visual img {
  transform: scale(1.04);
}

.card-visual::before {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0;
  background: linear-gradient(180deg, rgba(7,8,11,.08), rgba(7,8,11,.68));
}

.card-visual::after {
  content: "";
  position: absolute;
  z-index: 2;
  left: 24px;
  right: 24px;
  bottom: 24px;
  height: 1px;
  background: rgba(255, 255, 255, .48);
  backdrop-filter: blur(12px);
}

.card-visual span {
  position: absolute;
  left: 24px;
  bottom: 36px;
  z-index: 3;
  color: #fff;
  font-size: 10px;
  font-weight: 850;
  letter-spacing: .18em;
}

.card-body { padding: 24px; }

.card-body h3 {
  min-height: 78px;
  margin-bottom: 14px;
  color: var(--ink);
  font-size: 22px;
  font-weight: 560;
  line-height: 1.24;
  letter-spacing: -.035em;
}

.card-body p { color: var(--muted-dark); }

.card-body a {
  display: inline-flex;
  margin-top: 12px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
  border-bottom: 1px solid currentColor;
}

.feature-lab { background: var(--ink); }

.feature-lab .split,
.process .split,
.faq .split {
  grid-template-columns: minmax(0, .82fr) minmax(360px, 1fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

.feature-panel {
  padding: 22px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .045);
}

.feature-buttons { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.feature-btn { border-color: rgba(248, 247, 242, .18); color: var(--paper); }
.feature-btn.is-active { border-color: var(--paper); background: var(--paper); color: var(--ink); }

.feature-result { padding: clamp(26px, 4vw, 42px); background: #0d1017; }
.feature-result p { margin-bottom: 14px; color: #88a7ff; font-size: 12px; font-weight: 800; }

.feature-result h3 {
  margin-bottom: 18px;
  font-size: clamp(28px, 3.2vw, 48px);
  font-weight: 540;
  line-height: 1.13;
  letter-spacing: -.04em;
}

.feature-result span {
  display: inline-flex;
  margin-bottom: 24px;
  padding: 9px 12px;
  background: rgba(0, 71, 255, .90);
  font-size: 13px;
  font-weight: 800;
}

.feature-result ul { display: grid; gap: 9px; margin: 0; padding-left: 18px; }

.package { background: #0b0d12; }

.package-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 42px;
}

.package-card {
  padding: clamp(26px, 4vw, 40px);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .045);
}

.package-card.is-main { border-color: rgba(248, 247, 242, .36); background: var(--paper); color: var(--ink); }

.package-card p {
  margin-bottom: 12px;
  color: #88a7ff;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .12em;
}

.package-card.is-main p { color: var(--blue); }

.package-card h3 {
  margin-bottom: 26px;
  font-size: clamp(38px, 4.5vw, 62px);
  font-weight: 560;
  letter-spacing: -.045em;
}

.package-card ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 18px;
  color: rgba(248, 247, 242, .70);
  font-size: 15px;
  line-height: 1.7;
}

.package-card.is-main ul { color: var(--muted-dark); }
.price-note { margin-top: 22px; font-size: 13px; }

.ownership-banner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, .9fr);
  gap: clamp(22px, 4vw, 52px);
  margin-top: 16px;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid rgba(126, 160, 255, .55);
  background:
    linear-gradient(135deg, rgba(0, 71, 255, .28), rgba(255, 255, 255, .035) 48%, rgba(248, 247, 242, .08)),
    #0a0c11;
  box-shadow: 0 28px 80px rgba(0, 0, 0, .30);
}

.ownership-banner h3 {
  max-width: 720px;
  margin: 10px 0 14px;
  font-size: clamp(34px, 5vw, 72px);
  font-weight: 560;
  line-height: 1.04;
  letter-spacing: -.055em;
}

.ownership-banner p {
  max-width: 620px;
  color: rgba(248, 247, 242, .74);
  font-size: clamp(15px, 1.35vw, 18px);
  font-weight: 350;
  line-height: 1.85;
}

.ownership-banner ul {
  display: grid;
  gap: 1px;
  align-self: stretch;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(255, 255, 255, .12);
}

.ownership-banner li {
  display: grid;
  gap: 6px;
  padding: 20px;
  background: rgba(7, 8, 11, .82);
}

.ownership-banner strong {
  font-size: 21px;
  font-weight: 650;
  letter-spacing: -.03em;
}

.ownership-banner li span {
  color: rgba(248, 247, 242, .58);
  font-size: 13px;
  line-height: 1.65;
}

.ownership-note {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, .12);
}

.package-builder {
  display: grid;
  grid-template-columns: minmax(0, .78fr) minmax(340px, 1fr);
  gap: clamp(26px, 5vw, 64px);
  align-items: start;
  margin-top: 44px;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .035);
}

.builder-intro h3 {
  margin-bottom: 16px;
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 540;
  line-height: 1.16;
  letter-spacing: -.035em;
}

.builder-intro p:not(.mini-title) {
  color: var(--muted);
  font-size: 15px;
  font-weight: 350;
  line-height: 1.85;
}

.builder-box {
  padding: 18px;
  background: #07080b;
}

.builder-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 14px;
}

.builder-btn {
  min-height: 42px;
  border: 1px solid var(--line);
  background: transparent;
  color: rgba(248, 247, 242, .68);
  cursor: pointer;
  font-size: 13px;
  font-weight: 750;
}

.builder-btn.is-active {
  border-color: var(--paper);
  background: var(--paper);
  color: var(--ink);
}

.builder-result {
  padding: 26px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .04);
}

.builder-result span {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 8px 11px;
  background: var(--blue);
  color: #fff;
  font-size: 13px;
  font-weight: 850;
}

.builder-result h4 {
  margin: 0 0 12px;
  font-size: clamp(24px, 2.6vw, 36px);
  font-weight: 560;
  letter-spacing: -.04em;
}

.builder-result p,
.builder-result li,
.builder-result small {
  color: var(--muted);
  font-size: 14px;
  font-weight: 350;
  line-height: 1.8;
}

.builder-result ul {
  display: grid;
  gap: 8px;
  margin: 18px 0;
  padding-left: 18px;
}

.process { background: var(--paper); color: var(--ink); }
.process .section-label { color: var(--blue); }

.process-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-dark);
}

.process-list li {
  display: grid;
  grid-template-columns: 128px 1fr;
  gap: 22px;
  padding: 22px 24px;
  background: #fff;
}

.process-list strong { color: var(--ink); font-size: 18px; font-weight: 620; }
.process-list span { color: var(--muted-dark); margin: 0; }

.faq { background: var(--ink); }
.faq-list { display: grid; gap: 10px; }

.faq-list details {
  padding: 22px 24px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .04);
}

.faq-list summary {
  cursor: pointer;
  font-size: 17px;
  font-weight: 620;
  list-style: none;
}

.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; float: right; color: #88a7ff; }
.faq-list details[open] summary::after { content: "–"; }
.faq-list p { margin: 16px 0 0; }

.final-cta {
  padding: clamp(100px, 12vw, 170px) 18px;
  background: radial-gradient(circle at 50% 0%, rgba(0, 71, 255, .24), transparent 34%), #0b0d12;
  text-align: center;
}

.final-cta > * {
  width: min(var(--max), 100%);
  margin-left: auto;
  margin-right: auto;
}

.final-cta h2 { max-width: 900px; }
.final-cta p { max-width: 620px; margin-top: 24px; }
.final-cta .hero-actions { justify-content: center; }

footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
  padding: 34px clamp(18px, 5vw, 82px);
  border-top: 1px solid var(--line);
  background: #030407;
}

footer p { margin: 0; font-size: 13px; text-align: right; }

@media (max-width: 1100px) {
  nav { display: none; }
  .price .section-head {
    grid-template-columns: 1fr;
  }
  .price .section-head p {
    max-width: 620px;
  }
}

@media (max-width: 860px) {
  .hero { min-height: auto; }
  .hero-inner { padding-top: 120px; }
  h1 { font-size: clamp(46px, 13vw, 70px); }
  .hero-grid { display: none; }
  .hero-proof,
  .split,
  .section-head,
  .ai-card,
  .package-grid,
  .package-builder,
  .ownership-banner,
  .feature-lab .split,
  .process .split,
  .faq .split { grid-template-columns: 1fr; }
  .price-table div { grid-template-columns: 1fr; gap: 8px; }
  .leak-strip { grid-template-columns: 1fr; }
  .leak-strip i { display: none; }
  .process-list li { grid-template-columns: 1fr; gap: 8px; }
  footer { display: grid; }
  footer p { text-align: left; }
}

@media (max-width: 520px) {
  .site-header { padding: 13px 16px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand strong { font-size: 13px; }
  .brand em { display: none; }
  .nav-cta { padding: 9px 11px; font-size: 12px; }
  .section { padding: 78px 18px; }
  .button, .hero-actions { width: 100%; }
  .hero-proof { margin-top: 42px; }
  .card-body h3 { min-height: auto; }
  .builder-buttons { grid-template-columns: 1fr; }
}

@media (max-width: 1100px) {
  .price .section-head {
    display: block !important;
  }

  .price .section-head h2 {
    width: 100% !important;
    max-width: 680px !important;
    margin-bottom: 22px;
  }

  .price .section-head p {
    width: 100% !important;
    max-width: 620px !important;
  }
}