:root {
  --bg: #04060d;
  --surface: #0f1524;
  --surface-2: #111a2b;
  --text: #edf2ff;
  --muted: #a8b4cf;
  --line: rgba(180, 198, 255, 0.16);
  --primary: #5ea2ff;
  --primary-strong: #2f7fff;
  --accent: #94bcff;
  --success: #8de2b8;
  --radius: 18px;
  --shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', 'Noto Sans KR', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background:
    radial-gradient(circle at 15% -10%, rgba(38, 83, 186, 0.48) 0%, rgba(6, 9, 16, 0) 45%),
    radial-gradient(circle at 85% 10%, rgba(37, 119, 240, 0.34) 0%, rgba(8, 12, 21, 0) 40%),
    radial-gradient(circle at 50% -25%, #121d3d 0%, var(--bg) 46%);
  color: var(--text);
  line-height: 1.5;
  overflow-x: hidden;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.section {
  padding: 4.25rem 0;
}

h1,
h2,
h3 {
  margin: 0 0 0.75rem;
  line-height: 1.15;
}

h2 {
  font-size: clamp(1.65rem, 2vw, 2.2rem);
  margin-bottom: 1.35rem;
}

p {
  margin: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
  background: rgba(6, 8, 14, 0.65);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

.logo {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
}

.logo-img {
  height: 34px;
  width: auto;
  object-fit: contain;
  display: block;
}

.logo-fallback {
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.menu {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 1.1rem;
}

.menu a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.menu a:hover {
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 2rem;
  align-items: center;
  min-height: calc(100vh - 74px);
  padding-top: 3.5rem;
}

.eyebrow,
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(124, 164, 255, 0.4);
  background: rgba(52, 90, 177, 0.15);
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
}

.hero h1 {
  margin-top: 0.9rem;
  font-size: clamp(2.8rem, 8vw, 6rem);
  letter-spacing: 0.02em;
}

.headline {
  color: #dcebff;
  font-size: clamp(1.2rem, 2.2vw, 1.9rem);
  font-weight: 800;
  margin-bottom: 0.8rem;
}

.intro {
  color: var(--muted);
  max-width: 58ch;
  font-size: 1.04rem;
}

.price-row {
  margin-top: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.old-price {
  color: #7e8cae;
  text-decoration: line-through;
}

.new-price {
  font-size: 1.85rem;
  font-weight: 800;
}

.hero-actions {
  margin-top: 1.45rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.btn {
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 0.75rem 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.25s ease, background-color 0.2s ease;
}

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

.btn-primary {
  background: linear-gradient(120deg, var(--primary), var(--primary-strong));
  color: #f6faff;
  box-shadow: 0 10px 28px rgba(48, 126, 255, 0.42);
}

.btn-ghost {
  background: rgba(120, 154, 255, 0.1);
  border-color: rgba(120, 154, 255, 0.35);
  color: var(--text);
}

.countdown {
  margin-top: 1.15rem;
  display: inline-flex;
  gap: 0.6rem;
  align-items: center;
  font-size: 0.9rem;
  color: var(--muted);
}

#countdown-timer {
  color: var(--success);
}

.hero-media {
  position: relative;
}

.badge {
  position: absolute;
  top: -0.5rem;
  right: 0;
  z-index: 2;
}

.product-frame {
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(19, 29, 46, 0.95), rgba(9, 13, 22, 0.85));
  min-height: 390px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  place-items: center;
  overflow: hidden;
  position: relative;
}

.product-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(74, 132, 255, 0.16), rgba(0, 0, 0, 0));
  pointer-events: none;
}

#product-image {
  width: 100%;
  height: 100%;
  max-height: 420px;
  object-fit: contain;
  padding: 1rem;
}

.product-placeholder {
  color: var(--muted);
  border: 1px dashed rgba(176, 195, 243, 0.4);
  border-radius: 14px;
  padding: 4rem 2rem;
}


.detail-visual {
  padding: 5.5rem 0;
  background:
    radial-gradient(circle at 50% 35%, rgba(62, 118, 255, 0.2), rgba(4, 6, 13, 0) 55%),
    linear-gradient(180deg, rgba(8, 12, 24, 0.88), rgba(5, 8, 16, 0.96));
}

.detail-visual-inner {
  display: flex;
  justify-content: center;
}

.detail-frame {
  width: min(1240px, 100%);
  border-radius: 22px;
  border: 1px solid rgba(158, 186, 255, 0.2);
  overflow: hidden;
  box-shadow:
    0 34px 72px rgba(0, 0, 0, 0.5),
    0 0 40px rgba(86, 142, 255, 0.18);
  background: rgba(8, 12, 22, 0.85);
  position: relative;
}

.detail-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at center, rgba(100, 149, 255, 0.16), rgba(0, 0, 0, 0.35));
}

#detail-image {
  width: 100%;
  height: auto;
  display: block;
}

.detail-placeholder {
  min-height: 380px;
  display: grid;
  place-items: center;
  color: var(--muted);
  border: 1px dashed rgba(176, 195, 243, 0.45);
  margin: 1.2rem;
  border-radius: 14px;
  font-weight: 600;
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.grid {
  display: grid;
  gap: 1rem;
}

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

.card {
  background: linear-gradient(160deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem;
  box-shadow: var(--shadow);
}

.card h3 {
  font-size: 1.03rem;
}

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

.spec-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: linear-gradient(150deg, rgba(16, 24, 39, 0.9), rgba(14, 19, 31, 0.9));
}

.spec-table th,
.spec-table td {
  padding: 0.9rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.spec-table th {
  width: 30%;
  color: #d3ddf6;
}

.spec-table td {
  color: var(--muted);
}

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

.review span {
  display: block;
  margin-top: 0.7rem;
  color: var(--accent);
  font-size: 0.9rem;
}

.purchase {
  max-width: 700px;
}

.field-row {
  margin-bottom: 1rem;
}

.field-row label {
  display: block;
  margin-bottom: 0.4rem;
  color: #dbe5ff;
  font-weight: 600;
}

.qty-wrap {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.qty-btn,
#quantity,
#color {
  background: rgba(255, 255, 255, 0.02);
  border: none;
  color: var(--text);
  padding: 0.62rem 0.8rem;
}

#quantity {
  width: 64px;
  text-align: center;
  -moz-appearance: textfield;
}

#quantity::-webkit-outer-spin-button,
#quantity::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

#color {
  border: 1px solid var(--line);
  border-radius: 10px;
  min-width: 220px;
}

.purchase-actions {
  margin-top: 1.1rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.stock {
  margin-top: 0.8rem;
  color: #ffd9a3;
  font-size: 0.92rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1rem 0 2rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
}

.footer-logo-img {
  height: 26px;
  width: auto;
  object-fit: contain;
  display: block;
}

.site-footer p {
  color: #7f8eb0;
  font-size: 0.85rem;
  text-align: center;
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  background: #16233f;
  color: #f0f5ff;
  border: 1px solid rgba(140, 177, 255, 0.4);
  border-radius: 12px;
  padding: 0.8rem 1rem;
  box-shadow: var(--shadow);
  transform: translateY(140%);
  opacity: 0;
  transition: all 0.3s ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.page-glow {
  position: fixed;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(95px);
  z-index: -1;
  pointer-events: none;
}

.glow-a {
  background: rgba(72, 130, 255, 0.32);
  top: -140px;
  left: -90px;
}

.glow-b {
  background: rgba(64, 142, 255, 0.26);
  bottom: -170px;
  right: -90px;
}

.glow-c {
  background: rgba(57, 103, 255, 0.22);
  top: 28%;
  left: 48%;
}

@media (max-width: 960px) {
  .hero,
  .feature-grid,
  .review-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 2rem;
  }

  .menu {
    gap: 0.6rem;
    font-size: 0.92rem;
  }
}

@media (max-width: 620px) {
  .menu {
    display: none;
  }

  .logo-img {
    height: 28px;
  }

  .footer-logo-img {
    height: 22px;
  }

  .section {
    padding: 3rem 0;
  }

  .badge {
    position: static;
    margin-bottom: 0.7rem;
  }
}