@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css");

:root {
  --pc-black: #000000;
  --pc-ink: #0b1111;
  --pc-light: #f5f5f7;
  --pc-white: #ffffff;
  --pc-text: #1d1d1f;
  --pc-text-secondary: rgba(29, 29, 31, 0.72);
  --pc-text-tertiary: rgba(29, 29, 31, 0.48);
  --pc-dark-text: rgba(255, 255, 255, 0.82);
  --pc-dark-tertiary: rgba(255, 255, 255, 0.56);
  --pc-green: #0c8f6f;
  --pc-green-deep: #0a745b;
  --container-width: 1100px;
  --radius-xl: 32px;
  --radius-lg: 26px;
  --radius-md: 20px;
  --shadow-soft: 0 12px 30px rgba(0, 0, 0, 0.04);
  --shadow-hero: 0 30px 80px rgba(0, 0, 0, 0.3);
}

html.lenis,
html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-stopped {
  overflow: hidden;
}

.lenis.lenis-scrolling iframe {
  pointer-events: none;
}

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--pc-text);
  background: var(--pc-white);
  font-family: "Pretendard", -apple-system, sans-serif;
  line-height: 1.6;
  letter-spacing: -0.02em;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 0 0, rgba(12, 143, 111, 0.06), transparent 28%),
    radial-gradient(circle at 100% 20%, rgba(0, 0, 0, 0.03), transparent 22%);
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

section[id] {
  scroll-margin-top: 84px;
}

.container {
  width: min(var(--container-width), calc(100% - 32px));
  margin: 0 auto;
}

.section {
  position: relative;
  padding: 84px 0;
}

.section-light {
  background: var(--pc-light);
}

.section-white {
  background: var(--pc-white);
}

.section-dark {
  background:
    radial-gradient(circle at 12% 10%, rgba(12, 143, 111, 0.18), transparent 30%),
    linear-gradient(180deg, #0d1111 0%, #050707 100%);
  color: var(--pc-white);
}

.section-cta {
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.12), transparent 30%),
    linear-gradient(135deg, #0a745b 0%, #052e24 100%);
  color: var(--pc-white);
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid transparent;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(20px);
  transition: background 0.24s ease, border-color 0.24s ease;
}

.site-nav[data-scrolled="true"] {
  background: rgba(0, 0, 0, 0.86);
  border-color: rgba(255, 255, 255, 0.08);
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 52px;
}

.brand {
  color: var(--pc-white);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  transition:
    transform 0.22s ease,
    background-color 0.22s ease,
    border-color 0.22s ease,
    color 0.22s ease,
    box-shadow 0.22s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-small {
  min-height: 38px;
  padding: 0 16px;
  font-size: 0.92rem;
}

.btn-solid {
  color: var(--pc-white);
  background: var(--pc-green);
  box-shadow: 0 12px 28px rgba(12, 143, 111, 0.22);
}

.btn-solid:hover {
  background: var(--pc-green-deep);
}

.btn-ghost {
  color: var(--pc-white);
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.18);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-light {
  color: var(--pc-green-deep);
  background: var(--pc-white);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
}

.hero {
  overflow: hidden;
  padding-top: 48px;
  background:
    radial-gradient(circle at 12% 8%, rgba(12, 143, 111, 0.24), transparent 26%),
    radial-gradient(circle at 78% 0, rgba(255, 255, 255, 0.08), transparent 18%),
    linear-gradient(180deg, #050505 0%, #0b0b0b 100%);
  color: var(--pc-white);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(135deg, rgba(255, 255, 255, 0.04), transparent 42%),
    radial-gradient(circle at 85% 75%, rgba(12, 143, 111, 0.14), transparent 18%);
}

.hero-grid {
  display: grid;
  align-items: center;
  gap: 36px;
}

.section-kicker {
  margin: 0;
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--pc-green);
}

.section-kicker.inverse {
  color: rgba(255, 255, 255, 0.72);
}

h1,
h2,
h3,
p,
ul {
  margin: 0;
}

h1 {
  margin-top: 12px;
  font-size: clamp(2.7rem, 8vw, 4.7rem);
  line-height: 1.04;
  font-weight: 700;
  letter-spacing: -0.04em;
  max-width: 15ch;
}

.hero-description {
  margin-top: 20px;
  max-width: 42rem;
  color: var(--pc-dark-text);
  font-size: clamp(1.05rem, 2.8vw, 1.32rem);
}

.hero-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-chip {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  color: var(--pc-dark-text);
  font-size: 0.92rem;
  font-weight: 600;
}

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

.hero-caption {
  margin-top: 18px;
  color: var(--pc-dark-tertiary);
  font-size: 0.95rem;
}

.hero-visual {
  position: relative;
}

.device-stage {
  position: relative;
  min-height: 430px;
}

.phone {
  position: absolute;
  border-radius: 38px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-hero);
}

.phone-main {
  inset: 0 0 auto auto;
  width: min(100%, 390px);
  transform: rotate(-5deg);
}

.phone-sub {
  inset: auto auto 0 40px;
  width: min(76%, 300px);
  transform: rotate(7deg);
}

.section-intro {
  display: grid;
  gap: 14px;
  margin-bottom: 40px;
  max-width: 760px;
}

.section-intro h2,
.value-copy h2,
.cta-copy h2 {
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: 700;
  max-width: 20ch;
}

.section-intro p,
.value-copy p,
.cta-copy p,
.problem-card p,
.audience-card p,
.step-body p {
  color: var(--pc-text-secondary);
  font-size: clamp(1rem, 2.4vw, 1.12rem);
}

.section-dark .value-copy p,
.section-cta .cta-copy p {
  color: var(--pc-dark-text);
}

.problem-grid,
.audience-grid {
  display: grid;
  gap: 18px;
}

.problem-card,
.audience-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(29, 29, 31, 0.06);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(10px);
}

.problem-card h3,
.audience-card h3,
.step-body h3 {
  margin-bottom: 10px;
  font-size: clamp(1.45rem, 3.8vw, 2rem);
  line-height: 1.16;
  letter-spacing: -0.03em;
}

.steps {
  display: grid;
  gap: 22px;
}

.step {
  display: grid;
  gap: 18px;
  align-items: center;
  padding: 22px;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(29, 29, 31, 0.08);
  background: linear-gradient(180deg, #ffffff 0%, #fafafb 100%);
  box-shadow: var(--shadow-soft);
}

.step-number {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  color: var(--pc-green);
  background: rgba(12, 143, 111, 0.12);
  font-size: 1.05rem;
  font-weight: 800;
}

.step-kicker {
  margin-bottom: 10px;
  color: var(--pc-green);
  font-size: 0.92rem;
  font-weight: 700;
}

.step-image-wrap {
  overflow: hidden;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #eef3f1 0%, #e4ece8 100%);
}

.step-image-wrap img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.value-grid,
.cta-grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.value-list {
  padding-left: 18px;
  margin-top: 18px;
  color: var(--pc-dark-text);
}

.value-list li + li {
  margin-top: 10px;
}

.value-panel,
.cta-visual {
  overflow: hidden;
  border-radius: 34px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow-hero);
}

.value-panel {
  padding: 14px;
}

.value-panel img {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
}

.cta-visual img {
  width: 100%;
  object-fit: cover;
}

.compare-table {
  overflow: hidden;
  border-radius: 32px;
  border: 1px solid rgba(29, 29, 31, 0.08);
  background: var(--pc-white);
  box-shadow: var(--shadow-soft);
}

.compare-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.compare-row > div {
  padding: 18px 16px;
  border-bottom: 1px solid rgba(29, 29, 31, 0.08);
  font-size: 0.98rem;
}

.compare-row > div + div {
  border-left: 1px solid rgba(29, 29, 31, 0.08);
}

.compare-head > div {
  font-weight: 700;
  background: #eceef0;
}

.compare-head > div:last-child {
  color: var(--pc-white);
  background: var(--pc-green);
}

.compare-row:last-child > div {
  border-bottom: 0;
}

.positive {
  font-weight: 700;
  color: var(--pc-green-deep);
}

.site-footer {
  padding: 24px 16px 40px;
  text-align: center;
  color: var(--pc-text-tertiary);
  background: var(--pc-light);
  font-size: 0.92rem;
}

.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 720px) {
  .container {
    width: min(var(--container-width), calc(100% - 40px));
  }

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

  .compare-row > div {
    padding: 22px 24px;
    font-size: 1rem;
  }
}

@media (min-width: 960px) {
  .container {
    width: min(var(--container-width), calc(100% - 80px));
  }

  .section {
    padding: 112px 0;
  }

  .hero-grid,
  .value-grid,
  .cta-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(400px, 0.85fr);
    gap: 80px;
  }

  .hero {
    padding-top: 64px;
  }

  .device-stage {
    min-height: 560px;
  }

  .problem-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .audience-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .step {
    grid-template-columns: 72px minmax(0, 1fr) minmax(260px, 340px);
    gap: 24px;
    padding: 28px;
  }

  .step-reverse .step-body {
    order: 2;
  }

  .step-reverse .step-image-wrap {
    order: 1;
  }

  .step-image-wrap img {
    aspect-ratio: 5 / 6;
  }
}

@media (max-width: 719px) {
  .btn {
    width: 100%;
  }

  .nav-row .btn {
    width: auto;
  }

  .compare-row {
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn,
  .fade-up,
  .site-nav {
    transition: none;
  }

  .fade-up {
    opacity: 1;
    transform: none;
  }
}