@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css");

:root {
  --bg-page: #f4f8fb;
  --bg-page-alt: #fbfdff;
  --bg-hero: #071520;
  --bg-hero-deep: #0b1c29;
  --bg-dark: #081722;
  --ink: #0d1b2b;
  --ink-strong: #08131f;
  --muted: #546576;
  --muted-strong: #344659;
  --line: #dbe7f1;
  --line-dark: rgba(191, 218, 240, 0.22);
  --white: #ffffff;
  --brand: #0a7bff;
  --brand-sky: #67d7ff;
  --brand-green: #73dfb6;
  --hero-panel: rgba(7, 19, 31, 0.68);
  --hero-panel-edge: rgba(179, 220, 247, 0.16);
  --hero-glow-cyan: rgba(103, 215, 255, 0.28);
  --hero-glow-blue: rgba(10, 123, 255, 0.24);
  --hero-glow-green: rgba(115, 223, 182, 0.18);
  --shadow-soft: 0 24px 70px rgba(8, 23, 34, 0.08);
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Pretendard Variable", "Pretendard", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(103, 215, 255, 0.12), transparent 18%),
    linear-gradient(180deg, var(--bg-page) 0%, var(--bg-page-alt) 100%);
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

button,
input,
textarea,
select {
  font: inherit;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin: 0 auto;
}

.page-shell {
  position: relative;
  overflow: clip;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(20px);
  background: rgba(7, 21, 32, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header .container {
  width: min(calc(100% - 56px), 1360px);
}

.header-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px 32px;
  min-height: 96px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.brand-mark {
  width: 68px;
  height: 68px;
  flex-shrink: 0;
  filter: drop-shadow(0 10px 24px rgba(103, 215, 255, 0.18));
}

.brand-word {
  color: var(--white);
  font-family: "Sora", "Pretendard Variable", sans-serif;
  font-size: 1.62rem;
  font-weight: 700;
  letter-spacing: -0.05em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: rgba(235, 244, 255, 0.86);
  font-size: 15px;
  justify-self: center;
}

.site-nav a {
  position: relative;
  transition: color 160ms ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, var(--brand-sky), var(--brand-green));
  transition: transform 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--white);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  border-radius: 999px;
  background: var(--white);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: -0.02em;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-sky) 100%);
}

.button-ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.04);
}

.hero {
  position: relative;
  min-height: 100svh;
  padding: clamp(116px, 14vw, 170px) 0 84px;
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 18%, rgba(103, 215, 255, 0.12), transparent 26%),
    radial-gradient(circle at 82% 26%, rgba(10, 123, 255, 0.14), transparent 28%),
    linear-gradient(135deg, #040d16 0%, #081722 54%, #0b1d2d 100%);
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(circle at 68% 36%, rgba(255, 255, 255, 0.16), transparent 18%),
    linear-gradient(106deg, rgba(4, 14, 24, 0.78) 0%, rgba(5, 16, 28, 0.64) 22%, rgba(6, 18, 31, 0.34) 48%, rgba(4, 14, 24, 0.16) 100%),
    linear-gradient(180deg, rgba(4, 14, 24, 0.08) 0%, rgba(4, 14, 24, 0.34) 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(118deg, transparent 0%, rgba(255, 255, 255, 0.08) 48%, transparent 64%);
  background-size: 128px 128px, 128px 128px, 100% 100%;
  opacity: 0.16;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.82), rgba(0, 0, 0, 0.2) 72%, transparent);
}

.hero-media,
.hero-chaos,
.hero-atmosphere {
  position: absolute;
  inset: 0;
}

.hero-media {
  z-index: -2;
}

.hero-chaos {
  z-index: 1;
  pointer-events: none;
}

.hero-chaos img {
  position: absolute;
  left: clamp(-120px, -4vw, -36px);
  top: 50%;
  width: clamp(520px, 46vw, 900px);
  max-width: none;
  transform: translateY(-50%);
  opacity: 0.96;
  mix-blend-mode: screen;
  filter: saturate(1.08) brightness(1.1);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  transform: scale(1.03);
  filter: saturate(1.08) contrast(1.06) brightness(0.9);
  animation: heroPlaneDrift 22s ease-in-out infinite alternate;
}

.hero-atmosphere {
  z-index: 0;
  background:
    radial-gradient(circle at 18% 24%, var(--hero-glow-cyan), transparent 22%),
    radial-gradient(circle at 72% 22%, var(--hero-glow-blue), transparent 26%),
    radial-gradient(circle at 78% 72%, var(--hero-glow-green), transparent 28%),
    linear-gradient(90deg, rgba(8, 23, 34, 0.12) 0%, transparent 42%, rgba(8, 23, 34, 0.18) 100%);
  filter: blur(10px);
  opacity: 0.92;
}

.architecture .section-heading h2 {
  white-space: nowrap;
}

.nowrap-p p {
  white-space: nowrap;
}

.hero-shell {
  position: relative;
  z-index: 2;
  width: min(100%, 560px);
  min-height: calc(100svh - 220px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
  padding: clamp(28px, 4vw, 44px);
  margin-left: clamp(20px, 4vw, 72px);
}

.hero-shell::before {
  content: "";
  position: absolute;
  inset: -14px auto -18px -20px;
  width: min(604px, calc(100% + 40px));
  border: 1px solid var(--hero-panel-edge);
  border-radius: 34px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.01) 100%),
    linear-gradient(135deg, rgba(7, 19, 31, 0.74) 0%, rgba(7, 19, 31, 0.4) 100%);
  box-shadow:
    0 26px 70px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  z-index: -1;
}

.hero-brand,
.hero-brand-sub,
.hero h1 {
  margin: 0;
  font-family: "Sora", "Pretendard Variable", sans-serif;
  color: var(--white);
}

.hero-brand {
  font-size: clamp(4.1rem, 10vw, 8.4rem);
  line-height: 0.86;
  letter-spacing: -0.08em;
}

.hero-brand-sub {
  margin-top: 14px;
  font-size: clamp(0.95rem, 2.1vw, 1.28rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(215, 233, 255, 0.82);
}

.hero h1 {
  max-width: 13ch;
  margin-top: 34px;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.hero-description {
  max-width: 40rem;
  margin: 22px 0 0;
  color: rgba(224, 236, 255, 0.82);
  font-size: 1.08rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

[data-hero] {
  opacity: 0;
  transform: translateY(22px);
  animation: heroIn 760ms cubic-bezier(0.2, 0.7, 0.1, 1) forwards;
}

[data-hero="brand"] {
  animation-delay: 100ms;
}

[data-hero="subbrand"] {
  animation-delay: 180ms;
}

[data-hero="headline"] {
  animation-delay: 260ms;
}

[data-hero="copy"] {
  animation-delay: 340ms;
}

[data-hero="actions"] {
  animation-delay: 420ms;
}

.section {
  padding: 104px 0;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-heading h2,
.final-cta h2 {
  margin: 0;
  font-family: "Sora", "Pretendard Variable", sans-serif;
  color: var(--ink-strong);
  font-size: clamp(2rem, 3.8vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.05em;
}

.section-heading p,
.final-copy {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.8;
}

.section-heading.inverse h2,
.section-heading.inverse p,
.section-heading.inverse .eyebrow {
  color: var(--white);
}

.section-heading.inverse p {
  color: rgba(224, 236, 255, 0.76);
}

.product-index {
  background: linear-gradient(180deg, #f3f7fb 0%, #fbfdff 100%);
}

.product-index .section-heading {
  max-width: 1040px;
}

.product-lines {
  border-top: 1px solid var(--line);
}

.product-line {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) minmax(320px, 420px);
  gap: 28px;
  align-items: start;
  padding: 30px 0 34px;
  border-bottom: 1px solid var(--line);
}

.product-line-index {
  display: block;
  color: #7f95ab;
  font-family: "Sora", "Pretendard Variable", sans-serif;
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.product-line-body h3,
.principle-item h3,
.track-step h3 {
  margin: 0;
  font-family: "Sora", "Pretendard Variable", sans-serif;
  letter-spacing: -0.03em;
}

.product-line-body h3 {
  color: var(--ink-strong);
  font-size: clamp(1.55rem, 3vw, 2.1rem);
}

.product-line-body p,
.principle-item p,
.track-step p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.product-line-meta {
  margin: 0;
  max-width: 420px;
  color: var(--muted-strong);
  font-size: 0.95rem;
  line-height: 1.8;
  text-align: right;
  justify-self: end;
  text-wrap: pretty;
}

.platform-showcase {
  background:
    radial-gradient(circle at top right, rgba(103, 215, 255, 0.12), transparent 16%),
    linear-gradient(180deg, var(--bg-page-alt) 0%, #f3f8fc 100%);
}

.platform-overview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.82fr);
  gap: 28px 24px;
  align-items: start;
}

.platform-hero-card,
.platform-detail-card {
  margin: 0;
}

.platform-hero-card img,
.platform-detail-card img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.platform-hero-card figcaption,
.platform-detail-card figcaption {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.platform-hero-card strong,
.platform-detail-card strong,
.platform-summary-card h3 {
  margin: 0;
  color: var(--ink-strong);
  font-family: "Sora", "Pretendard Variable", sans-serif;
  letter-spacing: -0.03em;
}

.platform-hero-card strong,
.platform-detail-card strong {
  font-size: 1.04rem;
}

.platform-hero-card figcaption > span:not(.feature-badge),
.platform-detail-card figcaption > span,
.platform-summary-card p {
  color: var(--muted);
  line-height: 1.75;
}

.platform-summary-card {
  padding: 28px;
  border: 1px solid rgba(103, 215, 255, 0.22);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(244, 249, 255, 0.96) 100%);
  box-shadow: var(--shadow-soft);
}

.platform-summary-card h3 {
  font-size: 1.42rem;
}


.platform-summary-card p {
  margin: 12px 0 0;
}

.platform-summary-list {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.platform-summary-list span {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 16px;
  border: 1px solid rgba(8, 23, 34, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--muted-strong);
  font-size: 0.95rem;
  font-weight: 600;
}

.platform-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px 24px;
  margin-top: 32px;
}

.gateway-showcase {
  background:
    radial-gradient(circle at 86% 18%, rgba(10, 123, 255, 0.1), transparent 18%),
    radial-gradient(circle at 12% 82%, rgba(115, 223, 182, 0.1), transparent 22%),
    linear-gradient(180deg, #f8fbff 0%, #eef5fb 100%);
}

.gateway-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.82fr);
  gap: 28px 24px;
  align-items: start;
}

.gateway-featured,
.gateway-secondary {
  margin: 0;
}

.gateway-featured img,
.gateway-secondary img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.gateway-featured figcaption,
.gateway-secondary figcaption {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.gateway-featured strong,
.gateway-secondary strong,
.gateway-note h3 {
  margin: 0;
  color: var(--ink-strong);
  font-family: "Sora", "Pretendard Variable", sans-serif;
  letter-spacing: -0.03em;
}

.gateway-featured strong,
.gateway-secondary strong {
  font-size: 1.04rem;
}

.gateway-featured figcaption > span:not(.feature-badge),
.gateway-secondary figcaption > span,
.gateway-note p {
  color: var(--muted);
  line-height: 1.75;
}

.gateway-side {
  display: grid;
  gap: 24px;
}

.gateway-note {
  padding: 28px;
  border: 1px solid rgba(103, 215, 255, 0.22);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88) 0%, rgba(245, 250, 255, 0.92) 100%);
  box-shadow: var(--shadow-soft);
}

.gateway-note h3 {
  font-size: 1.42rem;
}

.gateway-note p {
  margin: 12px 0 0;
}

.feature-badge {
  display: inline-flex;
  width: fit-content;
  padding: 8px 12px;
  border: 1px solid rgba(10, 123, 255, 0.14);
  border-radius: 999px;
  background: rgba(10, 123, 255, 0.08);
  color: var(--brand);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.gateway-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.gateway-metrics span {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid rgba(8, 23, 34, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--muted-strong);
  font-size: 0.92rem;
  font-weight: 600;
}

.sentinel-showcase {
  background:
    radial-gradient(circle at 14% 16%, rgba(115, 223, 182, 0.14), transparent 18%),
    radial-gradient(circle at 86% 82%, rgba(10, 123, 255, 0.08), transparent 20%),
    linear-gradient(180deg, #f6fbf8 0%, #eef8f3 100%);
}

.sentinel-grid {
  display: grid;
  grid-template-columns: 1.45fr 0.8fr 0.8fr;
  gap: 28px 24px;
  align-items: start;
}

.sentinel-note,
.sentinel-card {
  margin: 0;
}

.sentinel-note {
  grid-column: 1 / -1;
  padding: 28px;
  border: 1px solid rgba(115, 223, 182, 0.24);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(244, 252, 247, 0.96) 100%);
  box-shadow: var(--shadow-soft);
}

.sentinel-note h3,
.sentinel-card strong {
  margin: 0;
  color: var(--ink-strong);
  font-family: "Sora", "Pretendard Variable", sans-serif;
  letter-spacing: -0.03em;
}

.sentinel-note h3 {
  font-size: 1.42rem;
}

.sentinel-note p,
.sentinel-card figcaption > span:not(.feature-badge) {
  color: var(--muted);
  line-height: 1.75;
}

.sentinel-note p {
  margin: 12px 0 0;
}

.sentinel-capabilities {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.sentinel-capabilities span {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid rgba(8, 23, 34, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--muted-strong);
  font-size: 0.92rem;
  font-weight: 600;
}

.sentinel-card img {
  width: 100%;
  max-width: 340px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.sentinel-card {
  justify-self: center;
  width: 100%;
}

.sentinel-card-primary img {
  max-width: 100%;
}

.sentinel-card-primary figcaption {
  max-width: 100%;
}

.sentinel-card-secondary {
  max-width: 280px;
}

.sentinel-card-secondary img {
  max-width: 280px;
}

.sentinel-card-secondary figcaption {
  max-width: 280px;
}

.sentinel-card figcaption {
  display: grid;
  gap: 8px;
  margin-top: 14px;
  max-width: 340px;
}

.sentinel-card strong {
  font-size: 1.04rem;
}

.architecture {
  position: relative;
  background:
    radial-gradient(circle at 14% 16%, rgba(103, 215, 255, 0.12), transparent 18%),
    radial-gradient(circle at 86% 82%, rgba(115, 223, 182, 0.12), transparent 22%),
    linear-gradient(180deg, var(--bg-hero) 0%, var(--bg-hero-deep) 100%);
}

.architecture-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  margin-top: 12px;
}

.track-step {
  position: relative;
  padding-top: 22px;
  border-top: 3px solid rgba(103, 215, 255, 0.8);
}

.track-step:nth-child(2) {
  border-top-color: rgba(10, 123, 255, 0.8);
}

.track-step:nth-child(3) {
  border-top-color: rgba(115, 223, 182, 0.82);
}

.track-step:nth-child(4) {
  border-top-color: rgba(180, 220, 247, 0.82);
}

.track-step-number {
  display: block;
  margin-bottom: 16px;
  color: rgba(214, 233, 255, 0.72);
  font-family: "Sora", "Pretendard Variable", sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.track-step h3 {
  color: var(--white);
  font-size: 1.35rem;
}

.track-step p {
  color: rgba(224, 236, 255, 0.74);
}

.principles {
  background: linear-gradient(180deg, #f6f9fc 0%, #ffffff 100%);
}

.principle-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 34px 28px;
}

.principle-item {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.principle-item h3 {
  color: var(--ink-strong);
  font-size: 1.34rem;
}

.final-cta {
  background:
    radial-gradient(circle at top right, rgba(103, 215, 255, 0.12), transparent 18%),
    linear-gradient(180deg, #091823 0%, #07141d 100%);
  color: var(--white);
}

.final-cta .eyebrow,
.final-cta h2 {
  color: var(--white);
}

.final-copy {
  max-width: 720px;
  color: rgba(224, 236, 255, 0.76);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.site-footer {
  padding: 24px 0 40px;
  background: var(--bg-dark);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: rgba(204, 223, 242, 0.7);
  font-size: 14px;
}

.pricing-hero {
  position: relative;
  padding: 168px 0 96px;
  background:
    radial-gradient(circle at 14% 18%, rgba(103, 215, 255, 0.14), transparent 24%),
    radial-gradient(circle at 84% 26%, rgba(115, 223, 182, 0.16), transparent 28%),
    linear-gradient(135deg, #05111b 0%, #0a1b29 56%, #102637 100%);
  color: var(--white);
  overflow: hidden;
}

.pricing-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.05) 0%, transparent 38%, rgba(255, 255, 255, 0.08) 100%),
    linear-gradient(180deg, rgba(4, 14, 24, 0.12) 0%, rgba(4, 14, 24, 0.48) 100%);
  opacity: 0.8;
}

.pricing-hero .container,
.pricing-plans .container,
.pricing-contact .container {
  position: relative;
  z-index: 1;
}

.pricing-hero-copy {
  max-width: 760px;
}

.pricing-hero .eyebrow,
.pricing-hero h1,
.pricing-hero p {
  color: var(--white);
}

.pricing-hero h1 {
  margin: 0;
  font-family: "Sora", "Pretendard Variable", sans-serif;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.06em;
}

.pricing-hero p {
  margin: 18px 0 0;
  max-width: 640px;
  color: rgba(224, 236, 255, 0.82);
  font-size: 1.06rem;
  line-height: 1.8;
}

.pricing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.pricing-plans {
  background:
    radial-gradient(circle at top right, rgba(103, 215, 255, 0.1), transparent 18%),
    linear-gradient(180deg, #f5f9fc 0%, #fbfdff 100%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.pricing-card {
  position: relative;
  display: grid;
  gap: 22px;
  padding: 32px;
  border: 1px solid rgba(8, 23, 34, 0.08);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(245, 250, 255, 0.92) 100%);
  box-shadow: var(--shadow-soft);
}

.pricing-card.featured {
  border-color: rgba(10, 123, 255, 0.2);
  background:
    radial-gradient(circle at top right, rgba(103, 215, 255, 0.14), transparent 26%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(240, 248, 255, 0.96) 100%);
}

.pricing-tag {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(8, 23, 34, 0.08);
  background: rgba(8, 23, 34, 0.04);
  color: var(--muted-strong);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pricing-card.featured .pricing-tag {
  border-color: rgba(10, 123, 255, 0.16);
  background: rgba(10, 123, 255, 0.08);
  color: var(--brand);
}

.pricing-card h3 {
  margin: 0;
  font-family: "Sora", "Pretendard Variable", sans-serif;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  color: var(--ink-strong);
}

.pricing-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.pricing-price-note {
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted-strong);
  font-size: 0.95rem;
  font-weight: 600;
}

.pricing-feature-list {
  display: grid;
  gap: 12px;
}

.pricing-feature-list span {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 16px;
  border: 1px solid rgba(8, 23, 34, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--muted-strong);
  font-size: 0.96rem;
  font-weight: 600;
}

.pricing-card .button {
  width: fit-content;
}

.pricing-contact {
  background:
    radial-gradient(circle at 12% 18%, rgba(115, 223, 182, 0.12), transparent 18%),
    linear-gradient(180deg, #eef6fb 0%, #f7fbff 100%);
}

.pricing-contact-card {
  padding: 32px;
  border: 1px solid rgba(8, 23, 34, 0.08);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-soft);
}

.pricing-contact-card .button-ghost {
  color: var(--ink-strong);
  border-color: rgba(8, 23, 34, 0.12);
  background: rgba(8, 23, 34, 0.03);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 540ms ease,
    transform 540ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes heroIn {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroPlaneDrift {
  from {
    transform: scale(1.03) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.07) translate3d(-1.2%, -0.8%, 0);
  }
}

@media (max-width: 1120px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .platform-overview-grid {
    grid-template-columns: 1fr;
  }

  .gateway-grid {
    grid-template-columns: 1fr;
  }

  .sentinel-grid {
    grid-template-columns: 1fr 1fr;
  }

  .sentinel-note {
    grid-column: 1 / -1;
  }

  .sentinel-card-primary {
    grid-column: 1 / -1;
  }

  .sentinel-card-secondary {
    max-width: 320px;
  }

  .sentinel-card-secondary img,
  .sentinel-card-secondary figcaption {
    max-width: 320px;
  }

  .gateway-side {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .architecture-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-line {
    grid-template-columns: 72px minmax(0, 1fr);
  }

  .product-line-meta {
    grid-column: 2;
    text-align: left;
  }
}

@media (max-width: 920px) {
  .header-cta {
    display: none;
  }

  .site-header .container {
    width: min(calc(100% - 40px), 1360px);
  }

  .header-inner {
    display: flex;
    justify-content: space-between;
  }

  .nav-toggle {
    display: inline-block;
    order: 3;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 20px;
    right: 20px;
    display: grid;
    gap: 0;
    padding: 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;
    background: rgba(7, 21, 32, 0.96);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition:
      opacity 180ms ease,
      visibility 180ms ease,
      transform 180ms ease;
  }

  .site-nav a {
    padding: 14px 12px;
    border-radius: 14px;
  }

  .site-nav a::after {
    display: none;
  }

  .site-header.is-open .site-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .hero {
    min-height: auto;
    padding-top: 120px;
  }

  .pricing-hero {
    padding: 132px 0 84px;
  }

  .hero-chaos img {
    left: -120px;
    width: min(720px, 92vw);
    opacity: 0.8;
  }

  .hero-shell {
    min-height: calc(100svh - 200px);
    margin-left: 0;
  }

  .platform-overview-grid,
  .platform-detail-grid,
  .pricing-grid,
  .gateway-grid,
  .sentinel-grid,
  .gateway-side,
  .principle-list,
  .architecture-track,
  .footer-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .header-inner {
    min-height: 76px;
  }

  .brand-mark {
    width: 52px;
    height: 52px;
  }

  .brand-word {
    font-size: 1.2rem;
  }

  .nav-toggle {
    width: 44px;
    height: 44px;
    border-radius: 12px;
  }

  .hero::before {
    background:
      radial-gradient(circle at 50% 12%, rgba(255, 255, 255, 0.1), transparent 18%),
      linear-gradient(180deg, rgba(4, 14, 24, 0.82) 0%, rgba(4, 14, 24, 0.62) 32%, rgba(4, 14, 24, 0.8) 100%);
  }

  .hero {
    padding: 28px 0 24px;
  }

  .pricing-hero {
    padding: 110px 0 64px;
  }

  .pricing-hero h1 {
    font-size: clamp(2rem, 8vw, 2.6rem);
  }

  .pricing-hero p {
    font-size: 0.95rem;
    line-height: 1.65;
  }

  .hero-media img {
    object-position: 66% center;
  }

  .hero-chaos img {
    left: -148px;
    top: 24%;
    width: min(460px, 104vw);
    opacity: 0.58;
  }

  .hero-brand {
    font-size: clamp(3.4rem, 16vw, 5.5rem);
  }

  .hero-shell {
    margin-left: 0;
    min-height: auto;
    width: 100%;
    max-width: 480px;
    padding: 18px 18px 18px;
  }

  .hero-shell::before {
    inset: -6px -2px -8px;
    width: auto;
    border-radius: 22px;
  }

  .hero-shell > .brand-mark {
    display: none;
  }

  .hero-shell > .brand-word {
    display: none;
  }

  .hero h1 {
    max-width: none;
    margin-top: 4px;
    font-size: clamp(1.72rem, 7.6vw, 2.1rem);
    line-height: 1.06;
  }

  .hero-description {
    max-width: none;
    margin-top: 12px;
    font-size: 0.92rem;
    line-height: 1.55;
  }

  .hero-actions {
    gap: 8px;
    margin-top: 16px;
  }

  .hero-actions,
  .pricing-actions,
  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
    min-height: 46px;
    padding: 0 18px;
    font-size: 0.95rem;
  }

  .product-line {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .product-line-meta {
    grid-column: auto;
  }

  .section {
    padding: 84px 0;
  }
}

@media (max-width: 560px) {
  .hero {
    padding: 18px 0 18px;
  }

  .pricing-hero {
    padding: 98px 0 52px;
  }

  .hero-media img {
    object-position: 70% center;
  }

  .hero-chaos img {
    left: -164px;
    top: 18%;
    width: min(420px, 108vw);
    opacity: 0.48;
  }

  .hero-shell {
    max-width: none;
    padding: 16px 16px 16px;
  }

  .hero-shell::before {
    inset: -4px 0 -6px;
    border-radius: 20px;
  }

  .hero h1 {
    font-size: clamp(1.54rem, 8vw, 1.88rem);
  }

  .hero-description {
    font-size: 0.88rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .hero-actions {
    margin-top: 14px;
  }

  .button {
    min-height: 44px;
    font-size: 0.92rem;
  }
}