:root {
  --bg: #f4f7f8;
  --panel: #ffffff;
  --panel-soft: #edf7f5;
  --text: #111827;
  --muted: #5f6b76;
  --line: #d3dde2;
  --brand: #0f766e;
  --brand-dark: #115e59;
  --accent: #f59e0b;
  --ink: #0b1f2a;
  --warn: #9a3412;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Pretendard', 'Noto Sans KR', system-ui, sans-serif;
  background: linear-gradient(180deg, #e9f1f3 0%, #f8fafc 38%, #f4f7f8 100%);
  color: var(--text);
}

body,
button {
  letter-spacing: 0;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 24px;
  border-bottom: 1px solid rgba(211, 221, 226, 0.86);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 230px;
}

.brand-mark {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.nav a {
  padding: 8px 10px;
  border-radius: 8px;
  color: #374151;
  font-size: 14px;
  font-weight: 700;
}

.nav a:hover {
  background: #eef7f5;
  color: var(--brand-dark);
}

.badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 6px 10px;
  border: 1px solid #99f6e4;
  border-radius: 999px;
  background: #ecfeff;
  color: #0e7490;
  font-size: 12px;
  font-weight: 800;
}

.badge.muted {
  border-color: #d1d5db;
  background: #f9fafb;
  color: #6b7280;
}

.badge.deal {
  border-color: #fed7aa;
  background: #fff7ed;
  color: #c2410c;
}

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 8px 26px rgba(15, 23, 42, 0.07);
}

.hero-actions,
.final-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border: 1px solid #9ca3af;
  border-radius: 8px;
  background: #fff;
  color: #111827;
  padding: 10px 15px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button:hover,
.button:hover {
  border-color: #4b5563;
}

button.primary,
.button.primary {
  border-color: var(--brand);
  background: var(--brand);
  color: #fff;
}

button.primary:hover,
.button.primary:hover {
  border-color: var(--brand-dark);
  background: var(--brand-dark);
}

.button.secondary {
  border-color: #bfd4d2;
  background: #eef7f5;
  color: var(--brand-dark);
}

.button.ghost {
  border-color: #b8c8ce;
  background: rgba(255, 255, 255, 0.76);
}

.button.large {
  min-height: 50px;
  padding-inline: 22px;
  font-size: 16px;
}

.button.full {
  width: 100%;
}

.section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 78px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
  align-items: center;
  gap: 42px;
  min-height: calc(100vh - 73px);
  padding-top: 54px;
  padding-bottom: 44px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--brand-dark);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 18px;
  color: var(--ink);
  font-size: clamp(46px, 7vw, 84px);
  line-height: 0.98;
}

h2 {
  margin-bottom: 14px;
  color: var(--ink);
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
}

h3 {
  margin-bottom: 9px;
  color: var(--ink);
  font-size: 20px;
}

.hero-text,
.section-heading p,
.split-section p,
.pricing-copy p,
.final-cta p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.hero-text {
  max-width: 650px;
}

.price-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 28px 0 22px;
}

.sale-price {
  color: var(--ink);
  font-size: 32px;
  font-weight: 900;
}

.list-price {
  color: #7b8791;
  text-decoration: line-through;
}

.discount {
  padding: 6px 9px;
  border-radius: 8px;
  background: #fff7ed;
  color: #c2410c;
  font-weight: 900;
}

.trust-list,
.check-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.trust-list li,
.check-list li {
  border: 1px solid #cfe0df;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  padding: 8px 11px;
  color: #31505a;
  font-size: 14px;
  font-weight: 800;
}

.product-visual {
  min-height: 540px;
}

.bottle-card {
  position: relative;
  display: grid;
  min-height: 540px;
  place-items: center;
  overflow: hidden;
  border: 1px solid #c7d8d9;
  border-radius: 8px;
  background:
    radial-gradient(circle at 50% 35%, rgba(255, 255, 255, 0.9), transparent 30%),
    linear-gradient(145deg, #cbe9e6 0%, #eff8f7 47%, #dbeafe 100%);
  box-shadow: var(--shadow);
}

.bottle-card::before {
  position: absolute;
  inset: 28px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  content: '';
}

.bottle {
  position: relative;
  z-index: 1;
  width: 168px;
  height: 430px;
  filter: drop-shadow(0 28px 24px rgba(15, 23, 42, 0.2));
}

.cap,
.neck,
.body,
.base {
  margin-inline: auto;
  border: 1px solid rgba(11, 31, 42, 0.12);
  background: linear-gradient(90deg, #f8fafc 0%, #dfe8eb 42%, #ffffff 54%, #b6c6cd 100%);
}

.cap {
  width: 94px;
  height: 48px;
  border-radius: 8px 8px 6px 6px;
}

.neck {
  width: 74px;
  height: 34px;
  border-radius: 6px 6px 0 0;
}

.body {
  position: relative;
  width: 154px;
  height: 306px;
  overflow: hidden;
  border-radius: 42px 42px 34px 34px;
}

.display {
  position: absolute;
  top: 48px;
  left: 50%;
  z-index: 2;
  width: 74px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: #0b1f2a;
  color: #9ff5e8;
  padding: 9px 0;
  text-align: center;
  font: 800 18px/1 'SFMono-Regular', Consolas, monospace;
}

.water-line {
  position: absolute;
  right: 18px;
  bottom: 42px;
  left: 18px;
  height: 118px;
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.42), rgba(20, 184, 166, 0.58));
}

.base {
  width: 128px;
  height: 42px;
  border-radius: 0 0 28px 28px;
}

.visual-stat {
  position: absolute;
  z-index: 2;
  display: grid;
  gap: 2px;
  min-width: 126px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  padding: 12px 14px;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.13);
}

.visual-stat.top {
  top: 86px;
  right: 42px;
}

.visual-stat.bottom {
  bottom: 84px;
  left: 38px;
}

.visual-stat strong {
  color: var(--ink);
  font-size: 22px;
}

.visual-stat span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.feature-grid,
.review-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.feature-card,
.review-card {
  min-height: 220px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 22px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  height: 40px;
  margin-bottom: 22px;
  border-radius: 8px;
  background: #e7f7f3;
  color: var(--brand-dark);
  padding: 0 10px;
  font-weight: 900;
}

.feature-card p,
.review-card p,
.faq-list p,
.purchase-card p {
  color: var(--muted);
  line-height: 1.65;
}

.split-section,
.pricing-section {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  align-items: start;
  gap: 42px;
}

.detail-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
}

.detail-list div {
  min-height: 120px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 18px;
}

.detail-list dt {
  margin-bottom: 8px;
  color: var(--brand-dark);
  font-weight: 900;
}

.detail-list dd {
  margin: 0;
  color: #334155;
  line-height: 1.55;
}

.reviews-section {
  width: 100%;
  padding-inline: max(16px, calc((100% - 1180px) / 2));
  background: #eaf4f2;
}

.rating {
  color: #b45309;
  font-weight: 800;
}

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

.review-card {
  min-height: 210px;
}

.review-card strong,
.review-card span {
  display: block;
}

.review-card span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 13px;
}

.pricing-copy {
  padding-top: 20px;
}

.purchase-card {
  display: grid;
  gap: 16px;
  padding: 24px;
}

.purchase-price {
  display: grid;
  gap: 4px;
}

.purchase-price strong {
  color: var(--ink);
  font-size: 42px;
  line-height: 1;
}

.color-options {
  display: flex;
  gap: 10px;
}

.swatch {
  width: 38px;
  height: 38px;
  min-height: 38px;
  border-radius: 999px;
  padding: 0;
}

.swatch.white {
  background: #f8fafc;
}

.swatch.black {
  background: #111827;
}

.swatch.mint {
  background: #9ed8c5;
}

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

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  color: var(--ink);
  font-size: 17px;
  font-weight: 900;
}

.faq-list p {
  margin: 12px 0 0;
}

.final-cta {
  margin-bottom: 54px;
  border: 1px solid #b9d9d4;
  border-radius: 8px;
  background: linear-gradient(135deg, #0f766e, #0b4b55);
  color: #fff;
  padding: 54px;
  text-align: center;
}

.final-cta .eyebrow,
.final-cta h2,
.final-cta p {
  color: #fff;
}

.final-cta p {
  max-width: 640px;
  margin-inline: auto;
  opacity: 0.86;
}

.final-actions {
  justify-content: center;
  margin-top: 26px;
}

.final-cta .button.secondary {
  border-color: rgba(255, 255, 255, 0.62);
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
}

@media (max-width: 1080px) {
  .topbar {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
  }

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

  .hero,
  .split-section,
  .pricing-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .product-visual,
  .bottle-card {
    min-height: 470px;
  }
}

@media (max-width: 760px) {
  .topbar {
    padding: 14px 16px;
  }

  .brand {
    min-width: 0;
  }

  .section {
    width: min(100% - 24px, 1180px);
  }

  .feature-grid,
  .review-grid,
  .detail-list {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 54px 0;
  }

  .hero {
    padding-top: 42px;
  }

  h1 {
    font-size: 46px;
  }

  .hero-text,
  .section-heading p,
  .split-section p,
  .pricing-copy p,
  .final-cta p {
    font-size: 16px;
  }

  .hero-actions,
  .final-actions {
    flex-direction: column;
  }

  .button.large,
  .hero-actions .button,
  .final-actions .button {
    width: 100%;
  }

  .product-visual,
  .bottle-card {
    min-height: 420px;
  }

  .bottle {
    transform: scale(0.84);
  }

  .visual-stat {
    min-width: 112px;
    padding: 10px;
  }

  .visual-stat.top {
    top: 42px;
    right: 18px;
  }

  .visual-stat.bottom {
    bottom: 42px;
    left: 18px;
  }

  .final-cta {
    padding: 40px 20px;
  }
}