/*
Design DNA (이번 생성용 – 고정)
스타일 프리셋: Minimal Monochrome Studio
컬러 전략: Off-White Base + Near-Black Text + Single Signal Accent (Amber)
레이아웃 패턴: Swiss Grid Editorial + Wide Whitespace Bands
섹션 순서 템플릿: Header → Hero → Products → Audio Tech → About → Contact/Location → Business Info → Footer
아이콘 스타일: Ultra-Thin Line Icon (SVG, 1.5px stroke)
배경 패턴: Subtle Concentric Spiral Lines (SVG, very low contrast)
*/
:root {
  --off-white: #f6f4ef;
  --near-black: #1a1a18;
  --muted: #6e6a63;
  --amber: #f2a23a;
  --line: #d7d2c8;
  --card: #fbfaf7;
  --shadow: 0 10px 30px rgba(26, 26, 24, 0.06);
  --radius: 14px;
  --grid-gap: clamp(18px, 2.8vw, 36px);
  --section-pad: clamp(52px, 9vw, 120px);
  --font: "Helvetica Neue", "Nimbus Sans", "Arial", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--off-white);
  color: var(--near-black);
  line-height: 1.6;
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--amber);
  color: var(--near-black);
  padding: 10px 16px;
  border-radius: 999px;
  z-index: 10;
}

.skip:focus {
  left: 16px;
  top: 16px;
}

.container {
  width: min(1160px, 92vw);
  margin: 0 auto;
}

.section {
  padding: var(--section-pad) 0;
}

.band {
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.6), rgba(246, 244, 239, 0.9));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.site-header {
  position: sticky;
  top: 0;
  background: rgba(246, 244, 239, 0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
  z-index: 50;
}

.header-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
}

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

.brand-text {
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 0.9rem;
}

.site-nav a {
  padding: 6px 4px;
  border-bottom: 1px solid transparent;
}

.site-nav a:hover {
  border-color: var(--amber);
  color: var(--near-black);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  width: 44px;
  height: 38px;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--near-black);
}

.hero {
  padding-top: clamp(80px, 14vw, 160px);
  padding-bottom: clamp(70px, 10vw, 140px);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/hero.svg") center/cover no-repeat;
  opacity: 0.25;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gap);
  position: relative;
}

.hero-copy {
  grid-column: span 6;
  display: grid;
  gap: 20px;
}

.hero-visual {
  grid-column: span 6;
  display: flex;
  justify-content: center;
  align-items: center;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.08));
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.75rem;
  color: var(--muted);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}

h3 {
  font-size: 1.05rem;
}

.lead {
  font-size: 1.05rem;
  color: var(--muted);
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid var(--amber);
  background: var(--amber);
  color: var(--near-black);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.btn.ghost {
  background: transparent;
  color: var(--near-black);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.85rem;
  color: var(--muted);
}

.section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 36px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 18px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 12px;
}

.card-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
}

.icon {
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--near-black);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
}

.role {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 2px 0 0;
}

.toggle {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  padding: 6px 12px;
  font-size: 0.8rem;
}

.card-body {
  border-top: 1px solid var(--line);
  padding-top: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.card-body ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gap);
}

.two-col > div:first-child {
  grid-column: span 5;
}

.two-col > div:last-child {
  grid-column: span 7;
}

.list-block ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gap);
}

.contact-grid > div {
  grid-column: span 5;
}

.form {
  grid-column: span 7;
  display: grid;
  gap: 14px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.form label {
  display: grid;
  gap: 8px;
  font-size: 0.9rem;
}

input,
textarea {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  font: inherit;
  background: #fff;
}

.form-status {
  min-height: 22px;
  font-size: 0.85rem;
  color: var(--muted);
}

.contact-dl,
.business-dl {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
}

.contact-dl div,
.business-dl div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
}

.contact-dl dt,
.business-dl dt {
  color: var(--muted);
}

.muted {
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.to-top {
  color: var(--amber);
}

@media (max-width: 960px) {
  .header-inner {
    grid-template-columns: auto auto;
  }

  .site-nav {
    position: absolute;
    right: 4vw;
    top: 70px;
    flex-direction: column;
    background: var(--off-white);
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: none;
  }

  .site-nav.open {
    display: grid;
    gap: 10px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .hero-copy,
  .hero-visual {
    grid-column: span 12;
  }

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

  .two-col > div,
  .contact-grid > div,
  .form {
    grid-column: span 12;
  }
}

@media (max-width: 640px) {
  .hero-meta {
    grid-template-columns: 1fr;
  }

  .contact-dl div,
  .business-dl div {
    grid-template-columns: 1fr;
  }
}

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

  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-copy,
.section-head {
  animation: fade-up 0.8s ease-out both;
}