:root {
  --ink: #0b0b0b;
  --muted: #686868;
  --line: #e4e4e4;
  --lime: #c8ff3d;
  --surface: #f3f4f4;
  --surface-strong: #e8e9e8;
  --radius-lg: 30px;
  --radius-md: 22px;
  --shadow: 0 24px 60px rgba(15, 15, 15, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: "Inter", "Noto Sans KR", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

svg {
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: min(1440px, calc(100% - 64px));
  margin: 0 auto;
  padding: 22px 0;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
}

.brand,
.nav,
.header-cta {
  display: inline-flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #fff;
  background: var(--ink);
  border-radius: 50%;
  font-size: 0.92rem;
}

.nav {
  gap: 6px;
  padding: 5px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.nav a {
  padding: 10px 18px;
  border-radius: 999px;
  color: #404040;
  font-size: 0.9rem;
  font-weight: 700;
  transition: background 160ms ease, color 160ms ease;
}

.nav a:hover {
  color: var(--ink);
  background: #fff;
}

.header-cta {
  justify-self: end;
  min-height: 44px;
  padding: 0 20px;
  color: #fff;
  background: var(--ink);
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
}

main {
  width: min(1440px, calc(100% - 64px));
  margin: 0 auto;
  overflow: hidden;
}

.hero {
  display: grid;
  grid-template-columns: minmax(280px, 0.98fr) minmax(380px, 1.1fr) minmax(250px, 0.82fr);
  gap: clamp(32px, 4vw, 70px);
  align-items: center;
  min-height: calc(100vh - 88px);
  padding: 36px 0 70px;
}

.hero > * {
  min-width: 0;
}

.greeting,
.section-number {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 24px 0 0;
  font-size: clamp(3.8rem, 5.8vw, 7.1rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.09em;
}

.summary {
  max-width: 560px;
  margin: 34px 0 0;
  color: #3b3b3b;
  font-size: 1.02rem;
  line-height: 1.78;
  letter-spacing: -0.03em;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-width: 210px;
  min-height: 58px;
  padding: 7px 8px 7px 24px;
  border-radius: 999px;
  font-size: 0.94rem;
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.contact-button:hover,
.header-cta:hover,
.text-link:hover {
  transform: translateY(-2px);
}

.contact-button:hover {
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.14);
}

.contact-button--lime {
  background: var(--lime);
}

.contact-button--dark {
  color: #fff;
  background: var(--ink);
}

.button-icon {
  display: grid;
  width: 43px;
  height: 43px;
  place-items: center;
  color: #fff;
  background: var(--ink);
  border-radius: 50%;
}

.button-icon svg {
  width: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.text-link {
  color: #303030;
  font-size: 0.95rem;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 5px;
  transition: transform 180ms ease;
}

.portrait-column {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 10px;
}

.portrait-card {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 4 / 5;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.portrait-card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 28%;
}

.floating-links {
  position: absolute;
  top: 30px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.floating-links a {
  display: grid;
  width: 49px;
  height: 49px;
  place-items: center;
  color: #fff;
  background: rgba(17, 17, 17, 0.38);
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: 50%;
  backdrop-filter: blur(9px);
  font-weight: 800;
  transition: color 160ms ease, background 160ms ease, transform 160ms ease;
}

.floating-links a:hover {
  color: var(--ink);
  background: var(--lime);
  transform: translateX(-4px);
}

.floating-links svg {
  width: 21px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.availability {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 58px;
  margin: 0 22px;
  background: #fff;
  border-radius: 0 0 18px 18px;
  box-shadow: 0 18px 40px rgba(18, 18, 18, 0.08);
  font-size: 0.96rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #45ff70;
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(69, 255, 112, 0.12);
}

.hero-proof {
  display: grid;
  gap: 34px;
}

.hero-proof p {
  margin: 0;
  color: var(--muted);
  font-size: 1.06rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.04em;
}

.hero-proof h2 {
  margin: 0;
  font-size: clamp(3.1rem, 4.2vw, 5.1rem);
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: -0.08em;
}

.proof-card {
  display: grid;
  gap: 8px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.proof-card strong {
  font-size: 1.2rem;
}

.proof-card span {
  color: var(--muted);
  font-weight: 700;
}

.about,
.business,
.closing {
  border-top: 1px solid var(--line);
}

.about {
  display: grid;
  grid-template-columns: minmax(320px, 0.95fr) minmax(360px, 1fr);
  gap: clamp(34px, 7vw, 110px);
  padding: 92px 0;
}

.about h2,
.section-heading h2,
.closing h2 {
  margin: 18px 0 0;
  font-size: clamp(2.4rem, 4.4vw, 5.2rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.08em;
}

.about-copy p,
.closing p {
  margin: 0;
  color: #393939;
  font-size: 1.08rem;
  line-height: 1.85;
  letter-spacing: -0.035em;
}

.contact-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 34px;
}

.contact-strip a {
  display: grid;
  gap: 8px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 800;
}

.contact-strip small {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.business {
  padding: 92px 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 36px;
}

.section-heading h2 {
  max-width: 780px;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.business-card {
  min-height: 330px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(24px, 3vw, 34px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.business-card--dark {
  color: #fff;
  background: var(--ink);
  border-color: var(--ink);
}

.business-card span {
  width: max-content;
  padding: 8px 13px;
  background: #fff;
  border-radius: 999px;
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 900;
}

.business-card h3 {
  margin: auto 0 18px;
  font-size: clamp(1.9rem, 2.4vw, 3rem);
  line-height: 0.95;
  letter-spacing: -0.07em;
}

.business-card p {
  margin: 0;
  color: #4d4d4d;
  line-height: 1.75;
  letter-spacing: -0.03em;
}

.business-card--dark p {
  color: #d9d9d9;
}

.closing {
  display: grid;
  justify-items: start;
  gap: 22px;
  padding: 86px 0 110px;
}

.closing h2 {
  max-width: 900px;
}

.closing p {
  max-width: 640px;
}

:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media (max-width: 1080px) {
  .site-header {
    grid-template-columns: 1fr;
    gap: 16px;
    justify-items: center;
  }

  .header-cta {
    justify-self: center;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .portrait-column {
    max-width: 560px;
    width: 100%;
    justify-self: center;
  }

  .hero-proof {
    grid-template-columns: 1fr 1fr;
    align-items: end;
  }

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

@media (max-width: 760px) {
  .site-header,
  main {
    width: min(100% - 32px, 1440px);
  }

  .site-header {
    position: static;
    padding: 18px 0;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
  }

  .nav a {
    flex: 1;
    text-align: center;
    padding: 10px 8px;
  }

  .hero {
    padding: 32px 0 56px;
  }

  .hero h1 {
    font-size: clamp(3rem, 16vw, 4.3rem);
    letter-spacing: -0.085em;
  }

  .summary {
    font-size: 1rem;
  }

  .hero-actions,
  .contact-strip,
  .section-heading,
  .hero-proof {
    display: grid;
    grid-template-columns: 1fr;
  }

  .contact-button,
  .text-link {
    width: 100%;
  }

  .text-link {
    text-align: center;
  }

  .about {
    grid-template-columns: 1fr;
    padding: 70px 0;
  }

  .business {
    padding: 70px 0;
  }

  .business-card {
    min-height: 280px;
  }

  .closing {
    padding: 70px 0 90px;
  }
}