:root {
  --blue: #1a8fd1;
  --blue-dark: #1270aa;
  --dark: #1a1a1a;
  --gray: #555;
  --light-gray: #f5f6f8;
  --mid-gray: #e2e5e9;
  --white: #ffffff;
  --radius: 16px;
  --shadow: 0 4px 32px rgba(0, 0, 0, 0.09);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: var(--dark);
  line-height: 1.7;
  background: var(--white);
}

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

/* ── IMAGE WRAPPER ── */
.ph {
  position: relative;
  overflow: hidden;
  width: 100%;
}
.ph img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── NAV ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--mid-gray);
  padding: 0 6%;
  display: flex;
  align-items: center;
  height: 60px;
  gap: 28px;
}
.nav-logo {
  text-decoration: none;
  flex-shrink: 0;
}
.nav-links a {
  text-decoration: none;
  color: var(--gray);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--blue);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-spacer {
  flex: 1;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}
.buy-btn {
  display: inline-flex;
  align-items: center;
  background: linear-gradient(135deg, #03c75a 0%, #02a84b 100%);
  color: white;
  font-size: 14px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 8px;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 2px 12px rgba(3, 199, 90, 0.35);
  transition:
    transform 0.15s,
    box-shadow 0.15s;
}
.buy-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(3, 199, 90, 0.45);
}
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all 0.25s;
}
.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
/* 모바일 메뉴 드롭다운 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--mid-gray);
  flex-direction: column;
  padding: 8px 0;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  text-decoration: none;
  color: var(--dark);
  font-size: 16px;
  font-weight: 500;
  padding: 14px 6%;
  border-bottom: 1px solid var(--mid-gray);
  transition: background 0.15s;
}
.mobile-menu a:last-child {
  border-bottom: none;
}
.mobile-menu a:active {
  background: var(--light-gray);
}
.nav-badge {
  font-size: 12px;
  background: var(--dark);
  color: white;
  padding: 5px 13px;
  border-radius: 20px;
  white-space: nowrap;
}

/* ── HERO ── */
.hero {
  background: linear-gradient(160deg, #edf2f7 0%, #dce8f3 60%, #cddff0 100%);
  padding: 90px 6% 0;
  overflow: hidden;
}
.hero-inner {
  max-width: 900px;
  margin: 0 auto;
}
.hero-top {
  text-align: center;
  padding-bottom: 56px;
}
.apple-badge {
  display: inline-flex;
  align-items: center;
  margin-bottom: 28px;
  overflow: hidden;
  border-radius: 10px;
}
.apple-badge img {
  height: 36px;
  width: auto;
  display: block;
}
.hero-logo-img {
  margin: 0 auto 10px;
}
.hero-sub {
  font-size: 17px;
  color: var(--blue);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.hero-tag {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--gray);
}
.hero-img-wrap {
  /* margin-top: 52px; */
  display: flex;
  justify-content: center;
}
.hero-product-wrap {
  position: relative;
  width: 100%;
}
.hero-product-img {
  width: 100%;
  height: auto;
  display: block;
  position: relative;
  z-index: 1;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
}
/* 와이파이 펄스 오버레이 — 위치는 이미지 내 아이콘 좌표 기준 */
.wifi-pulse {
  position: absolute;
  top: 35.5%;
  left: 48.3%;
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 0;
  -webkit-transform: translateZ(0);
}
.wifi-pulse span {
  position: absolute;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: rgba(41, 182, 232, 0.45);
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%) scale(0.3);
  transform: translate(-50%, -50%) scale(0.3);
  -webkit-animation: wifiPulse 2.6s ease-out infinite;
  animation: wifiPulse 2.6s ease-out infinite;
  opacity: 0;
}
.wifi-pulse span:nth-child(2) {
  animation-delay: 0.85s;
}
.wifi-pulse span:nth-child(3) {
  animation-delay: 1.7s;
}

@-webkit-keyframes wifiPulse {
  0%   { -webkit-transform: translate(-50%, -50%) scale(0.3); opacity: 0.7; }
  80%  { opacity: 0.1; }
  100% { -webkit-transform: translate(-50%, -50%) scale(2.6); opacity: 0; }
}
@keyframes wifiPulse {
  0% {
    transform: translate(-50%, -50%) scale(0.3);
    opacity: 0.7;
  }
  80% {
    opacity: 0.1;
  }
  100% {
    transform: translate(-50%, -50%) scale(2.6);
    opacity: 0;
  }
}
.hero-img-wrap .ph {
  width: 100%;
}
.hero-img-wrap .ph img {
  object-fit: contain;
  object-position: center bottom;
}

/* ── SHARED ── */
section {
  padding: 88px 6%;
}
.container {
  max-width: 880px;
  margin: 0 auto;
}
.section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 10px;
}
h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.2;
  margin-bottom: 16px;
}
h2 em {
  color: var(--blue);
  font-style: normal;
}
.lead {
  font-size: 16px;
  color: var(--gray);
  line-height: 1.85;
  max-width: 560px;
}

/* ── BRAND STORY ── */
.brand-story {
  background: var(--dark);
  position: relative;
  overflow: hidden;
}
.brand-story .bg-wrap {
  position: absolute;
  inset: 0;
}
.brand-story .bg-wrap .ph {
  width: 100%;
  height: 100%;
  border-radius: 0;
}
.brand-dark-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 15, 20, 0.8);
  pointer-events: none;
  z-index: 1;
}
.brand-story .container {
  position: relative;
  z-index: 2;
}
.brand-story .section-label {
  color: rgba(100, 180, 230, 0.9);
}
.brand-story h2 {
  color: white;
}

.brand-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 44px;
}
.brand-card {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  overflow: hidden;
}
.brand-card .ph {
  border-radius: 0;
  border: none;
  height: 260px;
  aspect-ratio: unset;
}
.brand-card-body {
  padding: 24px 26px;
}
.brand-card-body .tag {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--blue);
  margin-bottom: 8px;
}
.brand-card-body h3 {
  font-size: 20px;
  font-weight: 800;
  color: white;
  margin-bottom: 8px;
}
.brand-card-body p {
  font-size: 14px;
  color: #aaa;
  line-height: 1.8;
}
.brand-card-body strong {
  color: white;
}

.brand-full {
  margin-top: 20px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.6fr 1fr;
}
.brand-full .ph {
  border-radius: 0;
  border: none;
}
.brand-full .ph img {
  object-fit: contain;
  object-position: center center;
}
.brand-full-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.brand-full-body .tag {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--blue);
  margin-bottom: 10px;
}
.brand-full-body p {
  font-size: 15px;
  color: #bbb;
  line-height: 1.85;
}
.brand-full-body strong {
  color: white;
}

/* ── FEATURES ── */
.features-section {
  background: var(--light-gray);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--mid-gray);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 44px;
}
.feature-item {
  background: white;
  padding: 34px 22px;
  text-align: center;
}
.feat-icon {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #f5f6f8;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}
.feature-item h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 7px;
}
.feature-item p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.65;
}

/* ── POINTS ── */
.points-section {
  background: white;
}
.point-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-top: 44px;
}
.point-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--mid-gray);
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.point-card.flip {
  direction: rtl;
}
.point-card.flip > * {
  direction: ltr;
}

.point-img {
  overflow: hidden;
}
.point-img .ph {
  border-radius: 0;
  border: none;
  height: 100%;
}
.point-img .ph img {
  object-fit: contain;
}
.point-img.dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.point-img.dual .ph {
  border-radius: 0;
  border: none;
}

.point-body {
  padding: 36px;
  padding-top: 68px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  border-inline-start: 1px solid var(--mid-gray);
}
.point-num {
  position: absolute;
  top: 24px;
  inset-inline-start: 28px;
  display: inline-block;
  background: var(--dark);
  color: white;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 4px 10px;
  border-radius: 4px;
}
.point-body h3 {
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.25;
  margin-bottom: 12px;
}
.point-body p {
  font-size: 15px;
  color: var(--gray);
  line-height: 1.8;
}
.point-note {
  font-size: 12px;
  color: #aaa;
  margin-top: 10px;
}

/* ── LIFESTYLE ── */
.lifestyle-section {
  background: #d8eff9;
  padding: 60px 6%;
}
.lifestyle-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 44px;
}
.lifestyle-header .section-label {
  color: var(--blue-dark);
}
.lifestyle-header h2 {
  font-size: clamp(22px, 3.5vw, 34px);
}
.lifestyle-header h2 em {
  color: var(--blue);
}
.lifestyle-grid {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.lifestyle-grid .ph {
  border-radius: var(--radius);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
}

/* ── KC ── */
.kc-section {
  background: linear-gradient(135deg, #1a8fd1 0%, #0e6da8 100%);
  color: white;
}
.kc-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  max-width: 880px;
  margin: 0 auto;
}
.kc-inner .section-label {
  color: rgba(255, 255, 255, 0.7);
}
.kc-inner h2 {
  color: white;
}
.kc-badge {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  padding: 18px 28px;
  margin-top: 20px;
}
.kc-badge .cert-no {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 4px;
}
.kc-badge .cert-val {
  font-size: 22px;
  font-weight: 800;
  color: white;
}
.kc-img .ph {
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* ── SPECS ── */
.specs-section {
  background: var(--light-gray);
}
.specs-inner {
  max-width: 880px;
  margin: 0 auto;
}
.spec-pkg-img {
  text-align: center;
  margin-bottom: 36px;
}
.spec-pkg-img .ph {
  max-width: 600px;
  margin: 0 auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.spec-table tr {
  border-bottom: 1px solid var(--mid-gray);
}
.spec-table tr:last-child {
  border-bottom: none;
}
.spec-table td {
  padding: 14px 24px;
  font-size: 15px;
}
.spec-table td:first-child {
  color: var(--gray);
  width: 42%;
  font-weight: 500;
}
.spec-table td:last-child {
  font-weight: 600;
}

/* ── GUIDE ── */
.guide-section {
  background: white;
}
.step-cards {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 40px;
}
.step-card {
  background: var(--light-gray);
  border-radius: var(--radius);
  padding: 22px 26px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.step-num {
  min-width: 44px;
  height: 44px;
  background: var(--blue);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 800;
  flex-shrink: 0;
}
.step-text {
  flex: 1;
}
.step-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 5px;
}
.step-card p {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.75;
}
.step-card p strong {
  color: var(--blue);
}
.step-img .ph {
  border-radius: 10px;
  flex-shrink: 0;
}

/* ── BATTERY ── */
.battery-section {
  background: var(--light-gray);
}
.battery-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 40px;
}
.bat-step {
  background: white;
  border-radius: var(--radius);
  padding: 22px 26px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.bat-step .ph {
  border-radius: 10px;
  flex-shrink: 0;
}
.bat-step-body {
  flex: 1;
}
.bat-tag {
  display: inline-block;
  background: var(--dark);
  color: white;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 10px;
}
.bat-step p {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.8;
}
.bat-step strong {
  color: var(--blue);
}

/* ── CHECKLIST ── */
.check-section {
  background: white;
}
.check-box {
  background: var(--light-gray);
  border-radius: var(--radius);
  padding: 32px 36px;
  margin-top: 36px;
}
.check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  line-height: 1.75;
  border-bottom: 1px solid var(--mid-gray);
}
.check-item:last-child {
  border-bottom: none;
}
.check-icon {
  min-width: 24px;
  height: 24px;
  background: var(--blue);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  margin-top: 2px;
}
.check-divider {
  height: 20px;
}

/* ── FAQ ── */
.faq-section {
  background: var(--light-gray);
}
.faq-list {
  margin-top: 40px;
}
.faq-item {
  border-bottom: 1px solid var(--mid-gray);
}
.faq-q {
  padding: 20px 4px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  user-select: none;
}
.faq-q::before {
  content: "Q";
  min-width: 28px;
  height: 28px;
  background: var(--blue);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
}
.faq-arrow {
  margin-left: auto;
  font-size: 16px;
  color: #aaa;
  transition: transform 0.25s;
}
.faq-item.open .faq-arrow {
  transform: rotate(180deg);
}
.faq-a {
  display: none;
  padding: 0 4px 20px 38px;
  font-size: 15px;
  color: var(--gray);
  line-height: 1.8;
}
.faq-item.open .faq-a {
  display: block;
}

/* ── NOTICE ── */
.notice-section {
  background: white;
}
.notice-cards {
  margin-top: 40px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--mid-gray);
  box-shadow: var(--shadow);
}
.notice-card {
  background: white;
  padding: 28px 32px;
  display: flex;
  gap: 22px;
  align-items: flex-start;
  border-bottom: 1px solid var(--mid-gray);
}
.notice-card:last-child {
  border-bottom: none;
}
.notice-ico {
  font-size: 32px;
  min-width: 44px;
}
.ntag {
  display: inline-block;
  background: var(--dark);
  color: white;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 11px;
  border-radius: 4px;
  margin-bottom: 12px;
}
.notice-card ul {
  padding-left: 18px;
}
.notice-card li {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.8;
  margin-bottom: 5px;
}
.notice-card li strong {
  color: var(--blue);
}

/* ── CONTACT ── */
.contact-section {
  background: var(--light-gray);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 40px;
}
.contact-card {
  background: white;
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
}
.contact-ico {
  font-size: 30px;
  margin-bottom: 14px;
}
.contact-card h4 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
}
.contact-card .hours {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.85;
}
.kakao-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.kakao-desc {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
}
.kakao-flow {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.kakao-flow span {
  font-size: 13px;
  background: var(--light-gray);
  padding: 4px 10px;
  border-radius: 6px;
}
.kakao-flow .arr {
  color: var(--blue);
  font-weight: 700;
  font-size: 14px;
  background: none;
  padding: 0;
}
.kakao-img {
  margin-top: 16px;
}
.kakao-img .ph {
  border-radius: 10px;
}
.bulk-card {
  grid-column: 1 / -1;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.bulk-ico {
  font-size: 38px;
}
.bulk-card h4 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 6px;
}
.bulk-card p {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.75;
}

/* ── CLOSING ── */
.closing {
  position: relative;
  overflow: hidden;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
}
.closing .ph {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.closing::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.75) 0%,
    rgba(0, 0, 0, 0.2) 60%,
    transparent 100%
  );
  z-index: 1;
  pointer-events: none;
}
.closing-text {
  position: relative;
  z-index: 2;
  padding: 60px 8% 64px;
  color: white;
}
.closing-text .cl-logo img {
  height: 48px;
  width: auto;
  filter: brightness(0) invert(1);
  display: inline-block;
}
.closing-text p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.85;
  max-width: 500px;
}
.closing-text p em {
  color: #5ac8fa;
  font-style: normal;
  font-weight: 700;
}

/* ── FOOTER ── */
footer {
  background: #111;
  color: rgba(255, 255, 255, 0.45);
  text-align: center;
  padding: 48px 6% 40px;
}
.foot-logo {
  margin-bottom: 14px;
}
.foot-logo img {
  display: inline-block;
  height: 30px;
  width: auto;
  filter: brightness(0) invert(1);
}
footer a {
  color: rgba(255, 255, 255, 0.45) !important;
  text-decoration: none;
}
footer p {
  font-size: 13px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.45);
}

/* ── RESPONSIVE ── */
@media (max-width: 740px) {
  .brand-cards,
  .point-card,
  .kc-inner,
  .battery-steps,
  .contact-grid,
  .brand-full {
    grid-template-columns: 1fr;
  }
  .point-card.flip {
    direction: ltr;
  }
  .lifestyle-grid {
    grid-template-columns: 1fr;
  }
  .bulk-card {
    grid-column: 1;
  }
  .nav-links {
    display: none;
  }
  .hamburger {
    display: flex;
  }
}
@media (max-width: 520px) {
  section {
    padding: 64px 5%;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}