:root {
  color-scheme: light;
  --blue: #2563EB;
  --blue-soft: #EFF6FF;
  --blue-mid: #3B82F6;
  --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;
}

html {
  scroll-behavior: smooth;
}

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;
}

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

h1,
h2,
h3,
p,
li,
a,
button,
.btn,
.accordion-title,
.accordion-content {
  word-break: keep-all;
  overflow-wrap: break-word;
}

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

button {
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(226, 232, 240, 0.78);
  background: rgba(248, 250, 252, 0.9);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1120px, calc(100% - 32px));
  min-height: 62px;
  margin: 0 auto;
  gap: 16px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  flex: 0 1 auto;
}

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

.header-call {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border-radius: 999px;
  background: var(--navy);
  color: #FFFFFF;
  padding: 0 15px;
  font-size: 14px;
  font-weight: 760;
  white-space: nowrap;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.14);
}

main {
  overflow: hidden;
}

.hero-section {
  padding: 18px 0 30px;
}

.hero-slider {
  position: relative;
  width: min(1120px, calc(100% - 32px));
  aspect-ratio: 16 / 9;
  margin: 0 auto;
  overflow: hidden;
  border-radius: 28px;
  background: #020617;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.18);
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
}

.hero-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-hotspot {
  position: absolute;
  z-index: 8;
  bottom: 6.4%;
  height: 15%;
  border-radius: 999px;
  background: transparent;
}

.hero-hotspot:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.95);
  outline-offset: 3px;
}

.hero-hotspot-call {
  left: 3.8%;
  width: 22.5%;
}

.hero-hotspot-search {
  left: 25.5%;
  width: 29.5%;
}

.hero-dots {
  position: absolute;
  z-index: 9;
  left: 50%;
  bottom: 3.4%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  transform: translateX(-50%);
}

.hero-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(226, 232, 240, 0.72);
  cursor: pointer;
  transition: width 0.18s ease, background 0.18s ease;
}

.hero-dot.active {
  width: 20px;
  background: var(--blue);
}

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

h1 {
  color: var(--navy);
  font-size: clamp(32px, 8.8vw, 48px);
  font-weight: 820;
  line-height: 1.15;
  letter-spacing: 0;
}

h2 {
  color: var(--navy);
  font-size: clamp(24px, 6.1vw, 34px);
  font-weight: 790;
  line-height: 1.25;
  letter-spacing: 0;
}

h3 {
  color: var(--navy);
  font-size: 18px;
  font-weight: 780;
  line-height: 1.32;
}

.cta-actions {
  display: grid;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0 20px;
  font-size: 16px;
  font-weight: 760;
  line-height: 1.2;
  text-align: center;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease, border-color 0.16s ease;
}

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

.btn.primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-mid));
  color: #FFFFFF;
  box-shadow: 0 15px 30px rgba(37, 99, 235, 0.23);
}

.btn.secondary {
  border-color: rgba(37, 99, 235, 0.26);
  background: #FFFFFF;
  color: var(--blue);
}

.btn.dark {
  background: var(--navy);
  color: #FFFFFF;
  box-shadow: 0 15px 30px rgba(15, 23, 42, 0.17);
}

.service-card,
.guide-card,
.cta-card,
.battery-search-card,
.quick-link-card,
.accordion-item {
  border: 1px solid rgba(226, 232, 240, 0.92);
  border-radius: 22px;
  background: var(--card);
  box-shadow: var(--shadow);
}

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

.section-heading {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.section-heading.compact {
  margin-bottom: 14px;
}

.section-description {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.service-area-section {
  padding-top: 0;
  padding-bottom: 30px;
}

.service-area-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(226, 232, 240, 0.92);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(248, 250, 252, 0.98), rgba(239, 246, 255, 0.98));
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.09);
}

.service-area-card img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.service-area-fallback {
  display: none;
  color: var(--muted);
  padding: 28px 18px;
  font-size: 15px;
  font-weight: 720;
  line-height: 1.5;
  text-align: center;
}

.service-area-card.is-missing .service-area-fallback {
  display: block;
}

.battery-search-section {
  padding-top: 0;
  padding-bottom: 32px;
}

.battery-search-card {
  display: grid;
  gap: 18px;
  border-color: #DBEAFE;
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(239, 246, 255, 0.94), rgba(255, 255, 255, 0.98));
  padding: 22px;
  box-shadow: 0 16px 42px rgba(15, 23, 42, 0.075);
}

.battery-search-copy {
  display: grid;
  gap: 8px;
}

.battery-search-copy h2 {
  font-size: clamp(22px, 5.7vw, 30px);
  font-weight: 800;
  line-height: 1.28;
}

.battery-search-copy p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.62;
}

.battery-search-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 52px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--blue), var(--blue-mid));
  color: #FFFFFF;
  padding: 0 22px;
  font-size: 16px;
  font-weight: 780;
  line-height: 1.2;
  text-align: center;
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.22);
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.battery-search-icon {
  position: relative;
  width: 17px;
  height: 17px;
  border: 3px solid currentColor;
  border-radius: 999px;
}

.battery-search-icon::after {
  position: absolute;
  right: -7px;
  bottom: -5px;
  width: 9px;
  height: 3px;
  border-radius: 999px;
  background: currentColor;
  content: "";
  transform: rotate(45deg);
  transform-origin: left center;
}

.quick-link-section {
  padding-top: 0;
}

.quick-link-section h2 {
  font-size: clamp(22px, 5.5vw, 28px);
}

.quick-link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.quick-link-card {
  display: grid;
  align-content: start;
  gap: 13px;
  height: 100%;
  border-color: #E2E8F0;
  border-radius: 24px;
  padding: 12px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.065);
  transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.quick-link-image {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 1px solid rgba(226, 232, 240, 0.86);
  border-radius: 20px;
  background:
    linear-gradient(135deg, #F8FAFC, #EFF6FF);
  color: #94A3B8;
  font-size: 12px;
  font-weight: 680;
  text-align: center;
}

.quick-link-image.has-image {
  border-color: rgba(226, 232, 240, 0.9);
  background: #FFFFFF;
}

.quick-link-img {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  padding: 6px;
  border-radius: inherit;
  object-fit: cover;
  filter: contrast(1.03) brightness(1.03);
}

.quick-link-img[hidden] {
  display: none;
}

.quick-link-fallback {
  position: relative;
  z-index: 0;
  padding: 0 8px;
}

.quick-link-image.has-image .quick-link-fallback {
  opacity: 0;
}

.quick-link-text {
  display: grid;
  gap: 4px;
  min-height: 50px;
  align-content: start;
  text-align: center;
}

.quick-link-text strong {
  color: var(--text);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.34;
}

.quick-link-text span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 720;
  line-height: 1.42;
}

.service-grid {
  display: grid;
  gap: 12px;
}

.service-card {
  display: grid;
  gap: 12px;
  padding: 21px;
}

.service-number,
.step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue);
  font-weight: 820;
}

.service-number {
  width: 38px;
  height: 28px;
  font-size: 12px;
}

.service-card p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.62;
}

.guide-card {
  padding: 22px;
}

.accordion {
  display: grid;
  gap: 10px;
}

.accordion-item {
  box-shadow: var(--soft-shadow);
  overflow: hidden;
}

.accordion-trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  width: 100%;
  min-height: 64px;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  text-align: left;
}

.step-badge {
  width: 30px;
  height: 30px;
  background: var(--blue);
  color: #FFFFFF;
  font-size: 13px;
}

.accordion-title {
  color: var(--text);
  font-size: 16px;
  font-weight: 750;
  line-height: 1.35;
}

.accordion-mark {
  position: relative;
  width: 18px;
  height: 18px;
}

.accordion-mark::before,
.accordion-mark::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 2px;
  border-radius: 999px;
  background: #94A3B8;
  content: "";
  transform: translate(-50%, -50%);
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.accordion-mark::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.accordion-item.is-open .accordion-mark::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(0deg);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.22s ease;
}

.accordion-item.is-open .accordion-panel {
  max-height: 280px;
}

.accordion-content {
  display: grid;
  gap: 8px;
  padding: 0 16px 18px 58px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.text-link {
  color: var(--blue);
  font-weight: 720;
}

.accordion-note {
  color: #8B5A5A;
  font-size: 12px;
  line-height: 1.5;
}

.guide-note {
  margin-top: 14px;
  color: var(--red);
  font-size: 13px;
  font-weight: 520;
  line-height: 1.5;
}

.cta-section {
  padding-bottom: 48px;
}

.cta-card {
  display: grid;
  gap: 20px;
  border-color: rgba(191, 219, 254, 0.9);
  background:
    linear-gradient(145deg, #FFFFFF, #EFF6FF);
  padding: 24px;
}

.cta-card .eyebrow {
  margin-bottom: 8px;
}

@media (hover: hover) {
  .btn:hover,
  .header-call:hover {
    transform: translateY(-1px);
  }

  .btn.primary:hover {
    box-shadow: 0 18px 36px rgba(37, 99, 235, 0.28);
  }

  .btn.secondary:hover {
    border-color: rgba(37, 99, 235, 0.45);
    background: var(--blue-soft);
  }

  .accordion-trigger:hover {
    background: rgba(239, 246, 255, 0.56);
  }

  .quick-link-card:hover {
    border-color: rgba(37, 99, 235, 0.24);
    box-shadow: 0 18px 38px rgba(15, 23, 42, 0.095);
    transform: translateY(-2px);
  }

  .battery-search-button:hover {
    background: linear-gradient(135deg, #1D4ED8, var(--blue));
    box-shadow: 0 18px 34px rgba(37, 99, 235, 0.28);
    transform: translateY(-1px);
  }
}

@media (min-width: 640px) {
  .cta-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .quick-link-grid {
    gap: 16px;
  }

  .quick-link-card {
    padding: 16px;
  }

  .quick-link-text strong {
    font-size: 16px;
  }
}

@media (max-width: 640px) {
  .hero-slider {
    border-radius: 20px;
  }

  .service-area-card {
    border-radius: 20px;
  }

  .hero-dots {
    bottom: 3%;
  }

  .hero-dot {
    width: 7px;
    height: 7px;
  }

  .hero-dot.active {
    width: 18px;
  }
}

@media (min-width: 820px) {
  .hero-section {
    padding: 42px 0 30px;
  }

  .battery-search-card {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 28px 30px;
  }

  .battery-search-button {
    min-width: 220px;
  }

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

  .quick-link-grid {
    max-width: 720px;
  }

  .service-card {
    min-height: 190px;
    align-content: start;
  }

  .guide-card {
    padding: 28px;
  }

  .accordion-trigger {
    min-height: 68px;
    padding: 16px 18px;
  }

  .accordion-content {
    padding-right: 22px;
    padding-left: 60px;
  }

  .cta-card {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.65fr);
    align-items: center;
    padding: 34px;
  }
}

@media (max-width: 380px) {
  .quick-link-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 374px) {
  .header-inner,
  .hero-slider,
  .section {
    width: min(100% - 24px, 1120px);
  }

  .brand-logo {
    min-height: 38px;
  }

  .brand-logo img {
    width: clamp(118px, 38vw, 145px);
    max-height: 38px;
  }

  .header-call {
    min-height: 36px;
    padding: 0 12px;
    font-size: 13px;
  }

  .quick-link-card,
  .battery-search-card,
  .guide-card,
  .cta-card {
    border-radius: 20px;
    padding: 20px;
  }

  .hero-slider {
    border-radius: 20px;
  }

  h1 {
    font-size: 31px;
  }

  .accordion-trigger {
    min-height: 62px;
    gap: 10px;
    padding: 13px 14px;
  }

  .accordion-title {
    font-size: 15px;
  }

  .accordion-content {
    padding: 0 14px 16px 54px;
    font-size: 13px;
  }

  .quick-link-card {
    gap: 11px;
    padding: 14px;
  }

  .quick-link-image {
    border-radius: 16px;
    font-size: 11px;
  }

  .quick-link-img {
    padding: 5px;
  }

  .quick-link-text {
    min-height: auto;
  }

  .quick-link-text strong {
    font-size: 14px;
    line-height: 1.35;
  }

  .quick-link-text span {
    font-size: 12px;
  }
}