:root {
  --navy-deepest: #03080f;
  --navy-deep: #060d1a;
  --navy-dark: #0a1628;
  --navy-mid: #0f2040;
  --navy-light: #162c58;
  --navy-accent: #1a3570;
  --gold: #c9a84c;
  --gold-light: #e8c97a;
  --gold-pale: #f5e8c0;
  --white: #ffffff;
  --off-white: #f0ede6;
  --text-muted: #8fa3c0;
  --text-body: #c4d4e8;
  --border: rgba(201, 168, 76, 0.15);
  --border-strong: rgba(201, 168, 76, 0.35);
  --section-pad: 100px 0;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--navy-deepest);
  color: var(--text-body);
  font-family: 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', sans-serif;
  line-height: 1.8;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--navy-deep); }
::-webkit-scrollbar-thumb { background: var(--navy-light); border-radius: 3px; }

/* ===== NAV ===== */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 60px;
  height: 74px;
  background: rgba(3, 8, 15, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}
.nav-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.nav-logo span {
  color: var(--white);
  font-weight: 300;
  font-size: 14px;
  display: block;
  letter-spacing: 0.12em;
  margin-top: -3px;
}
.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}
.nav-links a {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform 0.25s;
}
.nav-links a:hover { color: var(--gold-light); }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-cta {
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold);
  padding: 9px 22px;
  font-size: 12px;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: all 0.25s;
  font-family: inherit;
  white-space: nowrap;
}
.nav-cta:hover {
  background: var(--gold);
  color: var(--navy-deep);
}
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.burger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--gold);
  transition: all 0.3s;
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 74px; left: 0; right: 0;
  background: rgba(3, 8, 15, 0.97);
  border-bottom: 1px solid var(--border);
  padding: 30px 32px;
  z-index: 999;
  flex-direction: column;
  gap: 24px;
  animation: slideDown 0.3s ease;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 16px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 20px;
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu .mob-cta {
  border: 1px solid var(--gold);
  color: var(--gold);
  padding: 14px 20px;
  text-align: center;
  font-size: 14px;
  letter-spacing: 0.1em;
  margin-top: 8px;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== HERO ===== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
  filter: brightness(0.25) saturate(0.7);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(3,8,15,0.4) 0%,
    rgba(6,13,26,0.65) 60%,
    rgba(3,8,15,0.95) 100%
  );
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
  max-width: 860px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-block;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.25em;
  padding: 7px 20px;
  margin-bottom: 36px;
  text-transform: uppercase;
}
.hero-content h1 {
  font-size: clamp(36px, 5.5vw, 68px);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.hero-content h1 em {
  font-style: normal;
  color: var(--gold);
}
.hero-subtitle {
  font-size: clamp(14px, 2vw, 18px);
  color: var(--text-muted);
  margin-bottom: 16px;
  letter-spacing: 0.06em;
}
.hero-tagline {
  font-size: clamp(13px, 1.6vw, 15px);
  color: var(--text-body);
  max-width: 520px;
  margin: 0 auto 52px;
  line-height: 1.9;
}
.hero-actions {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-gold {
  display: inline-block;
  background: var(--gold);
  color: var(--navy-deep);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 15px 38px;
  transition: all 0.25s;
  cursor: pointer;
}
.btn-gold:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
}
.btn-outline {
  display: inline-block;
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--white);
  font-size: 13px;
  letter-spacing: 0.12em;
  padding: 15px 38px;
  transition: all 0.25s;
}
.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: bounce 2.5s ease-in-out infinite;
}
.hero-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold), transparent);
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ===== STATS BAR ===== */
#stats {
  background: var(--navy-mid);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 48px 60px;
}
.stats-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat-item {
  text-align: center;
  padding: 10px 20px;
  border-right: 1px solid var(--border);
}
.stat-item:last-child { border-right: none; }
.stat-num {
  display: block;
  font-size: 42px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ===== SECTION COMMON ===== */
section { padding: var(--section-pad); }
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 60px;
}
.section-eyebrow {
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.section-eyebrow::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--gold);
}
.section-title {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 700;
  color: var(--white);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}
.section-lead {
  font-size: 16px;
  color: var(--text-body);
  max-width: 600px;
  line-height: 1.9;
}
.divider {
  width: 48px;
  height: 2px;
  background: var(--gold);
  margin: 28px 0;
}

/* ===== ABOUT ===== */
#about { background: var(--navy-deep); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-img-wrap {
  position: relative;
}
.about-img-wrap img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  filter: brightness(0.85) saturate(0.8);
}
.about-img-wrap::before {
  content: '';
  position: absolute;
  top: -18px;
  left: -18px;
  right: 18px;
  bottom: 18px;
  border: 1px solid var(--border-strong);
  z-index: 0;
  pointer-events: none;
}
.about-img-wrap img { position: relative; z-index: 1; }
.about-badge {
  position: absolute;
  bottom: -22px;
  right: -22px;
  z-index: 2;
  background: var(--gold);
  color: var(--navy-deep);
  width: 130px;
  height: 130px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-align: center;
  line-height: 1.4;
}
.about-badge strong { font-size: 26px; display: block; line-height: 1.1; }
.about-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}
.about-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.7;
}
.about-list li::before {
  content: '';
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  margin-top: 9px;
}

/* ===== FEATURES ===== */
#features { background: var(--navy-dark); }
.features-header { margin-bottom: 72px; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.feat-card {
  background: var(--navy-mid);
  padding: 44px 38px;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
}
.feat-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform 0.35s;
}
.feat-card:hover { background: var(--navy-accent); }
.feat-card:hover::before { transform: scaleX(1); }
.feat-icon {
  font-size: 32px;
  margin-bottom: 22px;
  display: block;
}
.feat-num {
  font-size: 52px;
  font-weight: 700;
  color: rgba(201,168,76,0.12);
  position: absolute;
  top: 28px; right: 28px;
  line-height: 1;
  letter-spacing: -0.03em;
}
.feat-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: 0.01em;
}
.feat-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.85;
}

/* ===== PACKAGES ===== */
#packages { background: var(--navy-deep); }
.packages-header { margin-bottom: 64px; }
.pkg-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pkg-card {
  background: var(--navy-dark);
  border: 1px solid var(--border);
  padding: 0;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}
.pkg-card:hover {
  transform: translateY(-6px);
}
.pkg-card.featured {
  border-color: var(--gold);
}
.pkg-badge-top {
  background: var(--gold);
  color: var(--navy-deep);
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 8px;
}
.pkg-body { padding: 36px 32px 40px; }
.pkg-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.pkg-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.75;
  min-height: 56px;
}
.pkg-price {
  font-size: 36px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
  line-height: 1;
}
.pkg-price-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 28px;
  letter-spacing: 0.05em;
}
.pkg-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin-bottom: 28px;
}
.pkg-includes {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.pkg-includes li {
  font-size: 13.5px;
  color: var(--text-body);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.6;
}
.pkg-includes li::before {
  content: '✦';
  color: var(--gold);
  font-size: 9px;
  flex-shrink: 0;
  margin-top: 4px;
}
.pkg-cta {
  display: block;
  margin: 32px 32px 0;
  padding: 14px;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  border: 1px solid var(--gold);
  color: var(--gold);
  transition: all 0.25s;
  cursor: pointer;
  margin-bottom: 0;
}
.pkg-cta:hover, .pkg-card.featured .pkg-cta {
  background: var(--gold);
  color: var(--navy-deep);
}
.pkg-footer { height: 24px; }

/* ===== INFO SECTION ===== */
#info { background: var(--navy-dark); }
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.info-img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  filter: brightness(0.8) saturate(0.75);
}
/* PC */
@media (min-width: 768px) {
  .info-img {
    height: 620px;
  }
}
.info-blocks {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.info-block {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}
.info-block:first-child { padding-top: 0; }
.info-block:last-child { border-bottom: none; }
.info-block-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.info-block-text {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.85;
}
.info-block-text strong {
  color: var(--white);
  font-weight: 600;
}

/* ===== SYSTEM / HOW IT WORKS ===== */
#system { background: var(--navy-mid); }
.system-header { margin-bottom: 64px; }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  position: relative;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 36px; left: 0; right: 0;
  height: 1px;
  background: var(--border-strong);
  z-index: 0;
}
.step {
  position: relative;
  z-index: 1;
  padding: 0 20px;
  text-align: center;
}
.step-num {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--navy-dark);
  border: 1px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
  margin: 0 auto 24px;
}
.step-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}
.step-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.8;
}
.notice-box {
  margin-top: 60px;
  background: rgba(201,168,76,0.06);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--gold);
  padding: 28px 36px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.notice-icon { font-size: 22px; flex-shrink: 0; margin-top: 2px; }
.notice-text {
  font-size: 14.5px;
  color: var(--text-body);
  line-height: 1.85;
}
.notice-text strong { color: var(--gold); font-weight: 700; }

/* ===== CTA ===== */
#cta {
  background: var(--navy-deepest);
  padding: 120px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  position: relative;
  overflow: hidden;
}
#cta::before {
  content: 'UPTOWN';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 200px;
  font-weight: 700;
  color: rgba(201,168,76,0.025);
  letter-spacing: 0.1em;
  pointer-events: none;
  white-space: nowrap;
}
.cta-inner { position: relative; z-index: 1; }
.cta-eyebrow {
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 22px;
}
.cta-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.cta-body {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 52px;
  line-height: 1.9;
}
.kakao-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #FEE500;
  color: #191919;
  font-size: 15px;
  font-weight: 700;
  padding: 18px 44px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all 0.25s;
  border: none;
  font-family: inherit;
}
.kakao-btn:hover {
  background: #F5DC00;
  transform: translateY(-2px);
}
.kakao-icon {
  width: 22px;
  height: 22px;
  background: #191919;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #FEE500;
  font-weight: 900;
}
.cta-note {
  margin-top: 22px;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

/* ===== FOOTER ===== */
footer {
  background: var(--navy-deepest);
  border-top: 1px solid var(--border);
  padding: 60px 60px 40px;
}
.footer-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}
.footer-brand { }
.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.footer-logo-sub {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  margin-bottom: 22px;
}
.footer-bio {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.85;
  max-width: 300px;
}
.footer-col-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  font-size: 13.5px;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--gold-light); }
.footer-info-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-info-item {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
.footer-info-item .label {
  color: var(--gold);
  flex-shrink: 0;
  min-width: 56px;
  font-size: 12px;
  letter-spacing: 0.06em;
}
.footer-bottom {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ===== FLOATING KAKAO ===== */
.floating-kakao {
  position: fixed;
  bottom: 36px;
  right: 36px;
  z-index: 900;
  background: #FEE500;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  cursor: pointer;
  transition: transform 0.25s;
  text-decoration: none;
}
.floating-kakao:hover { transform: scale(1.1); }
.floating-kakao svg { width: 28px; height: 28px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  #nav { padding: 0 32px; }
  .container { padding: 0 32px; }
  .about-grid, .info-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-img-wrap img { height: 340px; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .steps-grid { grid-template-columns: 1fr 1fr; gap: 48px; }
  .steps-grid::before { display: none; }
  footer { padding: 60px 32px 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  #stats { padding: 48px 32px; }
}
@media (max-width: 768px) {
  :root { --section-pad: 72px 0; }
  .nav-links, .nav-cta { display: none; }
  .burger { display: flex; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--border); }
  .stat-item:nth-child(odd) { border-right: 1px solid var(--border); }
  .stat-item:last-child, .stat-item:nth-last-child(2):nth-child(odd) { border-bottom: none; }
  .features-grid { grid-template-columns: 1fr; }
  .pkg-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .steps-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
  #cta::before { font-size: 100px; }
  .about-badge { width: 100px; height: 100px; bottom: -14px; right: -14px; }
  .about-badge strong { font-size: 20px; }
  .notice-box { flex-direction: column; gap: 12px; padding: 22px 24px; }
}
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: center; }
  .btn-gold, .btn-outline { width: 100%; max-width: 280px; text-align: center; }
  .floating-kakao { bottom: 24px; right: 24px; }
}