* {
  box-sizing: border-box;
}

:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --text: #111317;
  --muted: #6d727a;
  --line: #d9dde3;
  --silver: #b8bec8;
  --silver-dark: #767e89;
  --black: #0d0f12;
  --accent: #dfe3e8;
  --max: 1180px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans KR", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}

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

.container {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.narrow {
  width: min(calc(100% - 40px), 860px);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(255,255,255,.12);
  background: rgba(13,15,18,.82);
  backdrop-filter: blur(18px);
}

.nav {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 800;
}

.logo-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
  font-size: 13px;
  letter-spacing: -1px;
}

.logo-text {
  color: #fff;
  font-size: 19px;
  letter-spacing: -.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-links a {
  color: rgba(255,255,255,.78);
  font-size: 14px;
  transition: .25s ease;
}

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

.nav-links .nav-cta {
  padding: 11px 18px;
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
}

.menu-btn {
  display: none;
  width: 38px;
  height: 38px;
  border: 0;
  background: transparent;
  padding: 8px;
}

.menu-btn span {
  display: block;
  height: 2px;
  background: #fff;
  margin: 5px 0;
}

.hero {
  min-height: 860px;
  display: flex;
  align-items: center;
  padding: 150px 0 90px;
  overflow: hidden;
  background:
    radial-gradient(circle at 75% 30%, rgba(255,255,255,.13), transparent 25%),
    linear-gradient(135deg, #0c0e11 0%, #1a1d22 54%, #0e1013 100%);
  color: #fff;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: 72px;
}

.eyebrow,
.section-kicker {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 2.2px;
  font-weight: 700;
  color: var(--silver-dark);
}

.hero .eyebrow {
  color: #aeb5bf;
}

.hero h1 {
  margin: 22px 0 24px;
  font-size: clamp(48px, 6vw, 82px);
  line-height: 1.08;
  letter-spacing: -4px;
}

.hero h1 span {
  color: #d9dde3;
}

.hero-copy > p {
  max-width: 650px;
  margin: 0;
  color: rgba(255,255,255,.68);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 38px;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 52px;
  padding: 0 24px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform .25s ease, background .25s ease, color .25s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: #fff;
  color: #111317;
}

.btn-secondary {
  border-color: rgba(255,255,255,.3);
  color: #fff;
  background: transparent;
}

.price-section .btn-primary,
.contact-section .btn-primary {
  background: #111317;
  color: #fff;
}

.price-section .btn-secondary {
  border-color: #c9ced5;
  color: #111317;
}

.hero-points {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.hero-points div {
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,.18);
}

.hero-points strong,
.hero-points span {
  display: block;
}

.hero-points strong {
  font-size: 14px;
}

.hero-points span {
  margin-top: 5px;
  color: rgba(255,255,255,.5);
  font-size: 12px;
}

.hero-card {
  position: relative;
  min-height: 480px;
  display: grid;
  place-items: center;
}

.metal-card {
  width: min(100%, 470px);
  aspect-ratio: 1.55 / 1;
  border-radius: 22px;
  padding: 26px;
  color: #101215;
  background:
    linear-gradient(125deg, rgba(255,255,255,.95), rgba(174,181,191,.9) 40%, rgba(248,249,250,.95) 65%, rgba(145,151,160,.92));
  box-shadow: 0 38px 90px rgba(0,0,0,.45);
  transform: rotate(-5deg);
  position: relative;
  overflow: hidden;
}

.metal-card::before {
  content: "";
  position: absolute;
  inset: -50%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.55), transparent);
  transform: rotate(20deg);
  animation: shine 5s linear infinite;
}

@keyframes shine {
  from { translate: -50% 0; }
  to { translate: 50% 0; }
}

.metal-top,
.metal-bottom {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 2px;
  font-weight: 800;
}

.metal-center {
  position: relative;
  z-index: 1;
  height: calc(100% - 40px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.metal-center .small {
  font-size: 10px;
  letter-spacing: 4px;
}

.metal-center strong {
  font-size: 92px;
  line-height: 1;
  letter-spacing: -8px;
}

.metal-center p {
  text-align: center;
  font-size: 14px;
  line-height: 1.55;
  font-weight: 600;
}

.floating-badge {
  position: absolute;
  z-index: 3;
  border: 1px solid rgba(255,255,255,.25);
  background: rgba(15,17,20,.75);
  backdrop-filter: blur(10px);
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 700;
}

.badge-1 { right: 0; top: 70px; }
.badge-2 { left: 10px; bottom: 65px; }

.brand-strip {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.strip-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #4f555e;
  font-size: 13px;
  font-weight: 700;
}

.strip-inner i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #a6adb7;
}

.section {
  padding: 120px 0;
}

.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 100px;
}

.section-heading h2,
.section-title-center h2,
.comparison-box h2,
.contact-box h2 {
  margin: 16px 0 0;
  font-size: clamp(34px, 4.3vw, 58px);
  line-height: 1.18;
  letter-spacing: -2.8px;
}

.about-copy {
  padding-top: 35px;
}

.about-copy p {
  color: var(--muted);
  font-size: 17px;
}

.about-copy .lead {
  color: var(--text);
  font-size: 23px;
  font-weight: 700;
  line-height: 1.6;
}

.section-dark {
  background: #111317;
  color: #fff;
}

.section-title-center {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 58px;
}

.section-title-center p {
  color: var(--muted);
}

.section-dark .section-title-center p {
  color: rgba(255,255,255,.55);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.process-card {
  min-height: 290px;
  padding: 30px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.035);
}

.process-card .step {
  color: #8f96a1;
  font-size: 12px;
  letter-spacing: 2px;
}

.process-card h3 {
  margin: 70px 0 14px;
  font-size: 22px;
}

.process-card p {
  margin: 0;
  color: rgba(255,255,255,.55);
  font-size: 14px;
}

.price-section {
  background: #f7f8fa;
}

.pricing-grid {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.price-card {
  position: relative;
  padding: 42px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 18px 45px rgba(24,28,34,.06);
}

.price-card.featured {
  border: 2px solid #171a1f;
}

.price-label {
  position: absolute;
  right: 24px;
  top: 20px;
  font-size: 10px;
  letter-spacing: 1.4px;
  font-weight: 900;
}

.plan-type {
  color: #8b929c;
  font-size: 11px;
  letter-spacing: 2px;
  font-weight: 800;
}

.price-card h3 {
  margin: 10px 0 24px;
  font-size: 26px;
}

.price {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.price strong {
  font-size: 72px;
  line-height: .95;
  letter-spacing: -5px;
}

.price span {
  padding-bottom: 10px;
  font-size: 18px;
  font-weight: 700;
}

.period {
  margin: 12px 0 28px;
  color: var(--muted);
  font-size: 13px;
}

.price-card ul {
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
}

.price-card li {
  padding: 13px 0;
  border-bottom: 1px solid #edf0f3;
  color: #4f555e;
  font-size: 14px;
}

.price-card li::before {
  content: "✓";
  margin-right: 9px;
  color: #111317;
  font-weight: 900;
}

.full {
  width: 100%;
}

.price-note {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  margin-top: 24px;
}

.comparison {
  background: #fff;
}

.comparison-box {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 80px;
  padding: 68px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, #fbfcfd, #eceff3);
}

.compare-list div {
  display: flex;
  justify-content: space-between;
  padding: 19px 0;
  border-bottom: 1px solid #d6dbe1;
}

.compare-list span {
  color: var(--muted);
}

.compare-list strong {
  font-size: 18px;
}

.faq-section {
  background: #f5f6f8;
}

.faq-list details {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding: 24px 26px;
  font-size: 17px;
  font-weight: 700;
}

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

.faq-list summary::after {
  content: "+";
  float: right;
  font-size: 22px;
  font-weight: 400;
}

.faq-list details[open] summary::after {
  content: "–";
}

.faq-list details p {
  margin: 0;
  padding: 0 26px 26px;
  color: var(--muted);
}

.contact-section {
  padding: 110px 0;
  background: #111317;
  color: #fff;
}

.contact-box {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 70px;
  align-items: end;
}

.contact-box p {
  color: rgba(255,255,255,.55);
}

.contact-actions {
  display: grid;
  min-width: 300px;
  gap: 10px;
}

.btn.large {
  min-height: 60px;
}

.contact-section .btn-secondary {
  border-color: rgba(255,255,255,.25);
}

.contact-actions small {
  margin-top: 6px;
  color: rgba(255,255,255,.35);
  font-size: 11px;
}

footer {
  background: #0b0d0f;
  color: rgba(255,255,255,.52);
  padding: 48px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 30px;
}

.footer-logo {
  margin-bottom: 14px;
}

.footer-inner p {
  margin: 4px 0;
  font-size: 12px;
}

.footer-info {
  text-align: right;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}

.reveal.active {
  opacity: 1;
  transform: none;
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    padding: 22px;
    background: rgba(13,15,18,.98);
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 6px;
  }

  .menu-btn {
    display: block;
  }

  .hero {
    min-height: auto;
    padding-top: 130px;
  }

  .hero-grid,
  .split,
  .comparison-box,
  .contact-box {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 35px;
  }

  .hero-card {
    min-height: 390px;
  }

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

  .split,
  .comparison-box,
  .contact-box {
    gap: 35px;
  }

  .contact-actions {
    min-width: 0;
  }
}

@media (max-width: 640px) {
  .container,
  .narrow {
    width: min(calc(100% - 28px), var(--max));
  }

  .hero h1 {
    font-size: 47px;
    letter-spacing: -3px;
  }

  .hero-copy > p {
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-points {
    grid-template-columns: 1fr;
  }

  .hero-card {
    min-height: 300px;
  }

  .metal-card {
    width: 92%;
  }

  .metal-center strong {
    font-size: 66px;
  }

  .floating-badge {
    display: none;
  }

  .brand-strip {
    display: none;
  }

  .section {
    padding: 82px 0;
  }

  .section-heading h2,
  .section-title-center h2,
  .comparison-box h2,
  .contact-box h2 {
    font-size: 36px;
    letter-spacing: -2px;
  }

  .process-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .process-card {
    min-height: 240px;
  }

  .process-card h3 {
    margin-top: 45px;
  }

  .price-card {
    padding: 30px 24px;
  }

  .price strong {
    font-size: 62px;
  }

  .comparison-box {
    padding: 34px 24px;
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-info {
    text-align: left;
  }
}