/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --black: #1d1d1f;
  --gray-dark: #424245;
  --gray: #6e6e73;
  --gray-light: #86868b;
  --gray-border: #d2d2d7;
  --bg-white: #fff;
  --bg-gray: #f5f5f7;
  --link: #2997ff;
  --link-dark: #0066cc;
  --success: #34C759;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', sans-serif;
  color: var(--black);
  background: var(--bg-white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(29, 29, 31, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}

.nav.scrolled {
  background: rgba(29, 29, 31, 0.9);
}

.nav-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 48px;
}

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.logo-pay {
  color: rgba(255,255,255,0.92);
}

.logo-dot {
  color: var(--link);
}

.logo-work {
  color: var(--link);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}

.nav-links a {
  padding: 0 12px;
  font-size: 0.75rem;
  font-weight: 400;
  color: rgba(255,255,255,0.8);
  transition: color 0.3s;
  line-height: 48px;
}

.nav-links a:hover {
  color: #fff;
}

.nav-cta {
  color: var(--link) !important;
}

.nav-cta:hover {
  color: #fff !important;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  width: 18px;
  height: 1.5px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s;
}

/* ===== Buttons (Apple style) ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 1.05rem;
  font-weight: 400;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  font-family: inherit;
  background: none;
  padding: 0;
}

.btn-primary {
  background: var(--link);
  color: #fff;
  padding: 12px 28px;
  border-radius: 980px;
  font-size: 1rem;
  font-weight: 400;
}

.btn-primary:hover {
  background: #0077ed;
}

.btn-outline {
  color: #fff;
  padding: 12px 28px;
  border-radius: 980px;
  border: 2px solid rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 1rem;
}

.btn-outline:hover {
  background: rgba(255,255,255,0.25);
  border-color: #fff;
  color: #fff;
}

.btn-lg {
  padding: 16px 34px;
  font-size: 1.05rem;
}

.btn-full {
  width: 100%;
}

/* Text link style */
.link-arrow {
  color: var(--link);
  font-size: 1.05rem;
  font-weight: 400;
}

.link-arrow::after {
  content: ' >';
  font-size: 0.85em;
}

.link-arrow:hover {
  text-decoration: underline;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  text-align: left;
  color: #fff;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('hero.webp') center/cover no-repeat;
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(0,0,0,0.45) 0%, rgba(0,0,0,0.15) 50%, transparent 100%);
}

.hero-bg::after {
  display: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 180px 24px 80px 64px;
  max-width: 580px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255,255,255,0.15);
  border-radius: 980px;
  font-size: 0.8rem;
  font-weight: 400;
  margin-bottom: 24px;
  color: rgba(255,255,255,0.9);
  animation: fadeInDown 0.6s ease-out;
  border: none;
  backdrop-filter: none;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 8px;
  letter-spacing: -0.04em;
  white-space: nowrap;
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-brand-line {
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease-out 0.12s both;
}

.hero-brand-pay {
  color: #fff;
}

.hero-brand-dot {
  color: var(--link);
}

.hero-brand-work {
  color: var(--link);
}

.hero-sub {
  font-size: 1.3rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 24px;
  font-weight: 300;
  letter-spacing: 0.01em;
  animation: fadeInUp 0.6s ease-out 0.15s both;
}

.hero-features {
  display: flex;
  justify-content: flex-start;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-tag {
  padding: 6px 16px;
  background: rgba(255,255,255,0.12);
  border-radius: 980px;
  font-size: 0.82rem;
  font-weight: 400;
  border: none;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: flex-start;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease-out 0.25s both;
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.5);
  animation: fadeInUp 0.6s ease-out 0.4s both;
}

.scroll-arrow {
  width: 18px;
  height: 18px;
  border-right: 1.5px solid rgba(255,255,255,0.5);
  border-bottom: 1.5px solid rgba(255,255,255,0.5);
  transform: rotate(45deg);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(4px); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Sections Common ===== */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: none;
}

.section-header h2 {
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.035em;
  margin-bottom: 10px;
  color: var(--black);
  line-height: 1.15;
}

.section-header h2 strong {
  color: var(--black);
}

.section-header > p {
  font-size: 1.1rem;
  color: var(--gray);
  max-width: 500px;
  margin: 0 auto;
  font-weight: 400;
}

/* ===== Services ===== */
.services {
  background: var(--bg-gray);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.service-card {
  position: relative;
  background: var(--bg-white);
  border-radius: 18px;
  padding: 40px 30px;
  transition: transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
  border: none;
  text-align: center;
}

.service-card:hover {
  transform: scale(1.02);
}

.service-card.featured {
  background: var(--black);
  color: #fff;
}

.service-card.featured .service-icon {
  background: rgba(255,255,255,0.1);
  color: var(--link);
}

.service-card.featured p {
  color: var(--gray-light);
}

.service-card.featured h3 {
  color: #fff;
}

.service-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--link);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 980px;
}

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-gray);
  color: var(--gray-dark);
  border-radius: 50%;
  margin: 0 auto 20px;
}

.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.service-card p {
  font-size: 0.87rem;
  color: var(--gray);
  line-height: 1.65;
}

/* ===== Comparison ===== */
.comparison {
  background: var(--bg-white);
}

.comparison-table-wrap {
  overflow-x: auto;
  border-radius: 18px;
  background: var(--bg-gray);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.comparison-table thead {
  background: transparent;
}

.comparison-table th {
  padding: 20px 32px;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  color: var(--gray);
  border-bottom: 1px solid var(--gray-border);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.comparison-table th:first-child {
  text-align: left;
}

.comparison-table th.ours {
  color: var(--black);
}

.comparison-table td {
  padding: 18px 32px;
  font-size: 0.9rem;
  text-align: center;
  border-bottom: 1px solid rgba(0,0,0,0.04);
}

.comparison-table td.label {
  text-align: left;
  font-weight: 600;
  color: var(--black);
}

.comparison-table td.other {
  color: var(--gray-light);
}

.comparison-table td.ours {
  background: transparent;
}

.comparison-table td.highlight {
  color: var(--black);
  font-weight: 700;
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.comparison-table tbody tr:hover {
  background: rgba(0,0,0,0.02);
}

/* ===== Process ===== */
.process {
  background: var(--bg-gray);
}

.process-steps {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
}

.step {
  flex: 1;
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-white);
  border-radius: 18px;
  transition: transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
  position: relative;
  border: none;
}

.step:hover {
  transform: scale(1.03);
}

.step-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--gray-border);
  margin-bottom: 12px;
  line-height: 1;
  letter-spacing: -0.04em;
}

.step-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.step-content p {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.65;
}

.step-connector {
  width: 32px;
  min-width: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: transparent;
  height: auto;
}

.step-connector::after {
  content: '';
  position: static;
  display: block;
  border: 5px solid transparent;
  border-left-color: var(--gray-border);
  transform: none;
}

/* ===== Promo ===== */
.promo {
  padding: 0;
}

.promo-card {
  background: var(--black);
  border-radius: 0;
  padding: 80px 64px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  border: none;
  box-shadow: none;
}

.promo-card::before {
  display: none;
}

.promo-card::after {
  display: none;
}

.promo-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 0 auto;
}

.promo-card h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 28px;
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.promo-list {
  list-style: none;
  display: inline-flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 36px;
  text-align: left;
}

.promo-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  font-weight: 400;
  color: rgba(255,255,255,0.8);
}

.promo-check {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--link);
  border-radius: 50%;
  font-size: 0.75rem;
  border: none;
  color: #fff;
}

.promo .btn-primary {
  background: #fff;
  color: var(--black);
  font-weight: 400;
}

.promo .btn-primary:hover {
  background: rgba(255,255,255,0.85);
}

/* ===== Reviews ===== */
.reviews {
  background: var(--bg-white);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.review-card {
  background: var(--bg-gray);
  border-radius: 18px;
  padding: 32px 28px;
  border: none;
  transition: transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.review-card:hover {
  transform: scale(1.02);
}

.review-stars {
  color: #FF9500;
  font-size: 0.9rem;
  margin-bottom: 14px;
  letter-spacing: 1px;
}

.review-text {
  font-size: 0.9rem;
  color: var(--gray-dark);
  line-height: 1.75;
  margin-bottom: 24px;
  font-style: normal;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 36px;
  height: 36px;
  background: var(--gray-border);
  color: var(--bg-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.8rem;
}

.review-author strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
}

.review-author span {
  font-size: 0.75rem;
  color: var(--gray-light);
}

/* ===== FAQ ===== */
.faq {
  background: var(--bg-gray);
}

.faq-list {
  max-width: 680px;
  margin: 0 auto;
}

.faq-item {
  background: transparent;
  border-radius: 0;
  margin-bottom: 0;
  border: none;
  border-bottom: 1px solid var(--gray-border);
  overflow: hidden;
  box-shadow: none;
}

.faq-item:first-child {
  border-top: 1px solid var(--gray-border);
}

.faq-item:hover {
  border-color: var(--gray-border);
}

.faq-item[open] {
  border-color: var(--gray-border);
  box-shadow: none;
}

.faq-item summary {
  padding: 20px 0;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color 0.3s;
  letter-spacing: -0.01em;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--gray-light);
  transition: all 0.3s;
  min-width: 24px;
  text-align: center;
}

.faq-item[open] summary::after {
  content: '\2212';
  color: var(--black);
}

.faq-item[open] summary {
  color: var(--black);
}

.faq-answer {
  padding: 0 0 20px;
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.75;
  animation: fadeInUp 0.25s ease-out;
}

/* ===== Contact ===== */
.contact {
  background: var(--bg-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-gray);
  color: var(--gray-dark);
  border-radius: 50%;
  border: none;
}

.contact-icon svg {
  width: 20px;
  height: 20px;
}

.contact-item h3 {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--gray-light);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact-phone {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--black);
  display: block;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.contact-phone:hover {
  color: var(--link);
}

.contact-item p {
  font-size: 0.85rem;
  color: var(--gray);
}

.contact-info-top {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.contact-details {
  flex: 1;
}

.contact-qr {
  text-align: center;
  flex-shrink: 0;
}

.contact-qr img {
  width: 150px;
  height: 150px;
  padding: 12px;
  background: var(--bg-white);
  border-radius: 18px;
  border: 1px solid var(--gray-border);
}

.contact-qr p {
  font-size: 0.75rem;
  color: var(--gray-light);
  margin-top: 10px;
  font-weight: 400;
}

.contact-form-wrap {
  background: var(--bg-gray);
  border-radius: 18px;
  padding: 40px;
  border: none;
  box-shadow: none;
}

.contact-form h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--gray-dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--gray-border);
  border-radius: 12px;
  font-size: 0.93rem;
  font-family: inherit;
  transition: all 0.3s;
  background: var(--bg-white);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--link);
  box-shadow: 0 0 0 4px rgba(41, 151, 255, 0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 90px;
}

.form-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--gray-light);
  margin-top: 12px;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-gray);
  color: var(--gray);
  padding: 0;
}

.footer .container {
  max-width: 980px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  padding: 40px 0;
  border-bottom: 1px solid var(--gray-border);
}

.footer-brand {
  max-width: 280px;
}

.footer-brand .logo {
  display: inline-block;
  margin-bottom: 10px;
}

.footer-brand .logo-pay {
  color: var(--black);
}

.footer-brand p {
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--gray);
}

.footer-links {
  display: flex;
  gap: 56px;
}

.footer-links h4 {
  color: var(--black);
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.footer-links a {
  display: block;
  font-size: 0.78rem;
  margin-bottom: 8px;
  color: var(--gray);
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--black);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-company p {
  font-size: 0.72rem;
  margin-bottom: 2px;
  color: var(--gray);
}

.footer-copy {
  font-size: 0.72rem;
  color: var(--gray-light);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .mobile-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 48px;
    left: 0;
    right: 0;
    background: rgba(29, 29, 31, 0.97);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    flex-direction: column;
    padding: 0;
    border: none;
    border-top: 1px solid rgba(255,255,255,0.08);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s;
    box-shadow: none;
    border-radius: 0;
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links a {
    padding: 12px 22px;
    width: 100%;
    text-align: left;
    font-size: 0.88rem;
    line-height: 1.5;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }

  .hero-content {
    padding: 130px 22px 60px;
    max-width: 100%;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-sub {
    font-size: 1.05rem;
  }

  .section {
    padding: 56px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .section-header h2 {
    font-size: 2rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .service-card {
    padding: 28px 24px;
  }

  .process-steps {
    flex-direction: column;
    gap: 0;
  }

  .step-connector {
    width: auto;
    min-width: unset;
    height: 24px;
    flex-direction: column;
  }

  .step-connector::after {
    border: 5px solid transparent;
    border-top-color: var(--gray-border);
    border-left-color: transparent;
  }

  .promo-card {
    padding: 56px 22px;
  }

  .promo-card h2 {
    font-size: 1.7rem;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .contact-info-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .contact-form-wrap {
    padding: 28px 20px;
  }

  .footer-top {
    flex-direction: column;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-features {
    gap: 6px;
  }

  .hero-tag {
    font-size: 0.78rem;
    padding: 5px 12px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .section-header h2 {
    font-size: 1.6rem;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 14px 16px;
    font-size: 0.82rem;
  }
}