:root {
  color-scheme: light;
  --blue: #2563eb;
  --blue-mid: #3b82f6;
  --blue-soft: #eff6ff;
  --navy: #0f172a;
  --text: #1e293b;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #f8fafc;
  --card: #ffffff;
  --red: #dc2626;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  --soft-shadow: 0 10px 28px rgba(15, 23, 42, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--navy);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Pretendard", "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
  letter-spacing: 0;
  word-break: keep-all;
  overflow-wrap: break-word;
}

a {
  color: inherit;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

img {
  max-width: 100%;
}

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

.battery-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  width: min(1120px, calc(100% - 32px));
  min-height: 62px;
  margin: 0 auto;
  gap: 14px;
}

body::before {
  position: fixed;
  inset: 0 0 auto;
  z-index: 19;
  height: 62px;
  border-bottom: 1px solid rgba(226, 232, 240, 0.78);
  background: rgba(248, 250, 252, 0.92);
  backdrop-filter: blur(16px);
  content: "";
}

.battery-home,
.battery-call {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border-radius: 999px;
  padding: 0 13px;
  font-size: 13px;
  font-weight: 780;
  line-height: 1;
  white-space: nowrap;
}

.battery-home {
  justify-self: start;
  border: 1px solid rgba(37, 99, 235, 0.22);
  background: #ffffff;
  color: var(--blue);
}

.battery-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
}

.battery-logo img {
  display: block;
  width: clamp(120px, 34vw, 170px);
  max-height: 42px;
  height: auto;
  object-fit: contain;
}

.battery-call {
  justify-self: end;
  background: var(--navy);
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.14);
}

.battery-page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 0;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.breadcrumbs a {
  color: var(--blue);
  font-weight: 700;
}

.breadcrumbs span:last-child {
  color: #475569;
  font-weight: 650;
}

.eyebrow {
  color: var(--blue);
  font-size: 12px;
  font-weight: 780;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
}

.battery-hero-card,
.direct-answer,
.topic-card,
.info-card,
.price-link-card,
.faq-card,
.cta-card,
.table-card {
  border: 1px solid rgba(226, 232, 240, 0.92);
  border-radius: 22px;
  background: var(--card);
  box-shadow: var(--soft-shadow);
}

.battery-hero-card {
  display: grid;
  gap: 18px;
  border-radius: 28px;
  padding: clamp(24px, 4vw, 42px);
  background:
    radial-gradient(circle at 100% 0%, rgba(59, 130, 246, 0.14), transparent 34%),
    linear-gradient(145deg, #ffffff, #eff6ff);
  box-shadow: var(--shadow);
}

.battery-hero-card h1 {
  color: var(--navy);
  font-size: clamp(30px, 6vw, 48px);
  font-weight: 850;
  line-height: 1.16;
  letter-spacing: 0;
}

.battery-hero-layout {
  display: grid;
  gap: 20px;
}

.battery-hero-image {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  width: 100%;
  max-width: 460px;
  margin: 0;
  border: 1px solid rgba(226, 232, 240, 0.92);
  border-radius: 22px;
  background: linear-gradient(135deg, #f8fafc, #eff6ff);
}

.battery-hero-image::before {
  display: block;
  padding-top: 100%;
  content: "";
}

.battery-hero-image img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.battery-hero-image.is-missing img {
  display: none;
}

.battery-hero-summary {
  display: grid;
  align-content: center;
  gap: 14px;
}

.battery-hero-summary h2 {
  color: var(--navy);
  font-size: clamp(21px, 4vw, 30px);
  font-weight: 820;
  line-height: 1.28;
}

.battery-check-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.battery-check-list li {
  position: relative;
  padding-left: 17px;
  color: var(--text);
  font-size: 14px;
  font-weight: 640;
  line-height: 1.55;
}

.battery-check-list li::before {
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--blue);
  content: "";
}

.hero-desc,
.section-desc {
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.7;
}

.direct-answer {
  display: grid;
  gap: 12px;
  margin-top: 22px;
  padding: clamp(20px, 3vw, 28px);
  border-color: rgba(191, 219, 254, 0.96);
  background: #ffffff;
}

.direct-answer h2 {
  color: var(--navy);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 820;
  line-height: 1.35;
}

.direct-answer p {
  color: var(--text);
  font-size: 15px;
  font-weight: 540;
  line-height: 1.72;
}

.section {
  margin-top: clamp(42px, 7vw, 72px);
}

.section-heading {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.section-heading h2 {
  color: var(--navy);
  font-size: clamp(23px, 4vw, 34px);
  font-weight: 830;
  line-height: 1.24;
}

.topic-grid,
.info-grid,
.faq-grid,
.link-grid,
.price-link-grid {
  display: grid;
  gap: 14px;
}

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

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

.topic-card,
.info-card,
.faq-card {
  display: grid;
  gap: 8px;
  padding: 20px;
}

.topic-card strong,
.info-card h3,
.faq-card h3 {
  color: var(--navy);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.36;
}

.topic-card span,
.info-card p,
.faq-card p {
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.65;
}

.topic-card {
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.topic-card:hover {
  transform: translateY(-2px);
  border-color: rgba(37, 99, 235, 0.34);
  box-shadow: 0 16px 34px rgba(15, 23, 42, 0.09);
}

.table-card {
  overflow: hidden;
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.battery-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  background: #ffffff;
}

.battery-table th,
.battery-table td {
  border-bottom: 1px solid var(--line);
  padding: 13px 14px;
  text-align: left;
  vertical-align: top;
  font-size: 13px;
  line-height: 1.48;
}

.battery-table th {
  background: #f8fafc;
  color: #334155;
  font-weight: 800;
  white-space: nowrap;
}

.battery-table td {
  color: var(--text);
  font-weight: 520;
}

.battery-table tr:last-child td {
  border-bottom: 0;
}

.battery-table a {
  color: var(--blue);
  font-weight: 760;
}

.table-note {
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
  text-align: center;
}

.price-link-card {
  display: grid;
  gap: 13px;
  padding: 14px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.price-link-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 38px rgba(15, 23, 42, 0.09);
}

.price-link-image {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: 18px;
  background: linear-gradient(135deg, #f8fafc, #eff6ff);
  aspect-ratio: 1 / 1;
}

.price-link-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.price-link-text {
  display: grid;
  gap: 4px;
  text-align: center;
}

.price-link-text strong {
  color: var(--navy);
  font-size: 15px;
  font-weight: 820;
  line-height: 1.35;
}

.price-link-text span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 720;
  line-height: 1.35;
}

.cta-card {
  display: grid;
  gap: 20px;
  border-radius: 26px;
  border-color: rgba(191, 219, 254, 0.9);
  background: linear-gradient(145deg, #ffffff, #eff6ff);
  padding: clamp(22px, 4vw, 32px);
}

.cta-card h2 {
  margin-top: 7px;
  color: var(--navy);
  font-size: clamp(23px, 4vw, 32px);
  font-weight: 830;
  line-height: 1.28;
}

.cta-card p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
}

.btn.primary {
  background: var(--blue);
  color: #ffffff;
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.22);
}

.btn.secondary {
  border-color: rgba(37, 99, 235, 0.22);
  background: #ffffff;
  color: var(--blue);
}

.btn.dark {
  background: var(--navy);
  color: #ffffff;
}

.site-footer {
  margin-top: 72px;
  padding: 32px 20px 40px;
  border-top: 1px solid #e5e7eb;
  background: transparent;
  color: var(--muted);
  text-align: center;
}

.site-footer-inner {
  max-width: 960px;
  margin: 0 auto;
}

.footer-brand {
  display: block;
  margin-bottom: 12px;
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.footer-line {
  margin: 4px 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
  word-break: keep-all;
}

.footer-line a {
  color: var(--blue);
  font-weight: 700;
}

.footer-copy {
  margin: 14px 0 0;
  color: #94a3b8;
  font-size: 11px;
  line-height: 1.5;
}

@media (min-width: 800px) {
  .battery-hero-layout {
    grid-template-columns: minmax(260px, 0.85fr) minmax(0, 1.15fr);
    align-items: center;
  }

  .cta-card {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (max-width: 760px) {
  .battery-page-shell {
    width: min(100% - 28px, 1120px);
    padding-top: 22px;
  }

  .battery-topbar {
    width: min(100% - 28px, 1120px);
    gap: 8px;
  }

  .battery-home,
  .battery-call {
    min-height: 35px;
    padding: 0 10px;
    font-size: 12px;
  }

  .battery-hero-card {
    border-radius: 24px;
  }

  .topic-grid,
  .info-grid {
    grid-template-columns: 1fr;
  }

  .battery-table {
    min-width: 680px;
  }
}

@media (max-width: 420px) {
  .price-link-grid {
    grid-template-columns: 1fr;
  }

  .button-row {
    display: grid;
  }

  .btn {
    width: 100%;
  }
}