*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #0A0A0A;
  --white: #F5F3EF;
  --accent: #8b3dff;
  --accent2: #C8B8FF;
  --charcoal: #1A1A1A;
  --mid: #888;
  --border: rgba(255,255,255,0.1);
  --display: 'Syne', 'Pretendard', sans-serif;
  --body: 'DM Sans', 'Pretendard', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── NAV ── */
nav.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 48px;
  background: rgba(10,10,10,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.logo {
  font-family: var(--display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--white);
  text-decoration: none;
}
.logo span { color: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 32px; }
.nav-links { list-style: none; display: flex; gap: 32px; align-items: center; }
.nav-links a {
  color: var(--mid);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--white); }
.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 9px 22px;
  border-radius: 100px;
  font-weight: 600 !important;
  transition: opacity 0.2s !important;
}
.nav-cta:hover { opacity: 0.85; }

.lang-switch { display: flex; gap: 2px; border: 1px solid var(--border); border-radius: 100px; padding: 3px; }
.lang-switch button {
  background: none; border: 0; cursor: pointer;
  color: var(--mid); font-family: var(--display); font-size: 12px; font-weight: 700; letter-spacing: .06em;
  padding: 5px 12px; border-radius: 100px;
  transition: background .2s, color .2s;
}
.lang-switch button:hover { color: var(--white); }
.lang-switch button.active { background: var(--accent); color: #fff; }

/* ── HERO ── */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 48px 80px;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 70% 40%, rgba(139,61,255,0.16) 0%, transparent 60%),
              radial-gradient(ellipse 50% 40% at 20% 70%, rgba(200,184,255,0.10) 0%, transparent 55%);
  pointer-events: none;
}
.hero-eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: var(--accent);
}
.hero-headline {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(44px, 7vw, 96px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 1000px;
  margin-bottom: 32px;
}
.hero-headline em {
  font-style: normal;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--accent2);
}
.hero-sub {
  font-size: 18px;
  font-weight: 300;
  color: rgba(245,243,239,0.65);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 48px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-family: var(--body);
  font-weight: 600;
  font-size: 15px;
  padding: 15px 32px;
  border-radius: 100px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
  letter-spacing: 0.02em;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(139,61,255,0.4);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--white);
  font-size: 15px;
  font-weight: 400;
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.btn-ghost:hover { opacity: 1; }
.btn-ghost svg { transition: transform 0.2s; }
.btn-ghost:hover svg { transform: translateX(4px); }

.hero-ticker {
  position: absolute;
  bottom: 40px;
  left: 0;
  right: 0;
  overflow: hidden;
  white-space: nowrap;
  border-top: 1px solid var(--border);
  padding: 16px 0;
}
.ticker-inner {
  display: inline-flex;
  gap: 60px;
  animation: ticker 24s linear infinite;
}
@keyframes ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.ticker-item {
  font-family: var(--display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mid);
}
.ticker-item span { color: var(--accent); margin: 0 8px; }

/* ── STATS ── */
#stats {
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
}
.stat-cell { background: var(--black); padding: 44px 36px; }
.stat-num {
  font-family: var(--display);
  font-weight: 800;
  font-size: 52px;
  line-height: 1;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.stat-num sup { font-size: 28px; color: var(--accent); }
.stat-label { font-size: 14px; color: var(--mid); font-weight: 300; }

/* ── MARQUEE ── */
.marquee-section { padding: 28px 0; background: var(--accent); overflow: hidden; }
.marquee-inner {
  display: inline-flex;
  gap: 48px;
  animation: ticker 14s linear infinite;
  white-space: nowrap;
}
.marquee-item {
  font-family: var(--display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
}
.marquee-dot { color: rgba(255,255,255,0.4); }

/* ── SECTION SHARED ── */
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent2);
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.section-body {
  font-size: 17px;
  font-weight: 300;
  color: rgba(245,243,239,0.6);
  line-height: 1.75;
}

/* ── OPPORTUNITY ── */
#opportunity { padding: 120px 48px; }
.split-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: end;
  margin-bottom: 72px;
}
.opp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
}
.opp-card {
  background: var(--charcoal);
  padding: 44px 36px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}
.opp-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}
.opp-card:hover { background: #222; }
.opp-card:hover::after { transform: scaleX(1); }
.opp-card.featured { background: linear-gradient(135deg, #1E1030, #1A1A1A); }
.opp-icon { font-size: 28px; margin-bottom: 20px; }
.opp-card h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 20px;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.opp-card p { font-size: 15px; font-weight: 300; color: rgba(245,243,239,0.55); line-height: 1.7; }

/* ── MODEL / PROCESS ── */
#model { padding: 120px 48px; background: var(--charcoal); }
.process-header { max-width: 620px; margin-bottom: 80px; }
.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}
.process-step { padding: 0 24px; position: relative; }
.step-dot {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--black);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--display);
  font-weight: 800;
  font-size: 16px;
  color: var(--accent2);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}
.process-step:first-child .step-dot { border-color: var(--accent); color: var(--accent); }
.process-step h4 { font-family: var(--display); font-weight: 700; font-size: 17px; margin-bottom: 10px; }
.process-step p { font-size: 14px; font-weight: 300; color: rgba(245,243,239,0.5); line-height: 1.65; }
.model-callout {
  margin-top: 80px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: center;
  background: var(--black);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px;
}
.model-callout h4 { font-family: var(--display); font-weight: 700; font-size: 22px; margin-bottom: 14px; color: var(--accent); }
.model-callout p { font-size: 15px; font-weight: 300; color: rgba(245,243,239,0.6); line-height: 1.75; }
.callout-stats { display: flex; gap: 36px; justify-content: flex-end; flex-wrap: wrap; }
.cstat { text-align: center; }
.cstat span {
  display: block;
  font-family: var(--display);
  font-weight: 800;
  font-size: 40px;
  line-height: 1;
  color: var(--accent2);
  margin-bottom: 8px;
}
.cstat label { font-size: 12px; color: var(--mid); }

/* ── VALUE FOR LABELS ── */
#labels {
  padding: 120px 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  align-items: center;
}
.why-visual { position: relative; }
.why-card-stack { position: relative; height: 380px; }
.wcard { position: absolute; border-radius: 16px; padding: 32px; font-family: var(--display); }
.wcard-1 {
  background: linear-gradient(135deg, #1E1030, #2D1560);
  border: 1px solid rgba(200,184,255,0.2);
  width: 260px; top: 30px; left: 10px;
  transform: rotate(-4deg);
}
.wcard-2 {
  background: linear-gradient(135deg, #1A0A30, #3A1560);
  border: 1px solid rgba(139,61,255,0.3);
  width: 240px; top: 120px; left: 110px;
  transform: rotate(2deg);
}
.wcard-3 {
  background: var(--charcoal);
  border: 1px solid var(--border);
  width: 220px; top: 215px; left: 50px;
  transform: rotate(-1deg);
}
.wcard-num { font-size: 38px; font-weight: 800; margin-bottom: 6px; }
.wcard-1 .wcard-num { color: var(--accent2); }
.wcard-2 .wcard-num { color: var(--accent); }
.wcard-3 .wcard-num { color: var(--white); }
.wcard-label { font-size: 12px; font-weight: 400; color: rgba(245,243,239,0.5); letter-spacing: 0.05em; font-family: var(--body); }
.why-list { list-style: none; margin-top: 36px; }
.why-list li { display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--border); }
.why-list li:first-child { border-top: 1px solid var(--border); }
.why-icon {
  width: 36px; height: 36px;
  background: rgba(139,61,255,0.12);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; flex-shrink: 0; margin-top: 2px;
}
.why-list h4 { font-family: var(--display); font-weight: 700; font-size: 16px; margin-bottom: 4px; }
.why-list p { font-size: 14px; color: rgba(245,243,239,0.5); line-height: 1.6; }

/* ── PARTNER CRITERIA ── */
#partners { padding: 120px 48px; background: var(--charcoal); }
.criteria-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--border);
  margin-top: 72px;
}
.criteria-card {
  background: var(--black);
  padding: 36px 28px;
  transition: background 0.3s;
}
.criteria-card:hover { background: #161616; }
.cnum {
  font-family: var(--display);
  font-weight: 800;
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 16px;
}
.criteria-card h4 { font-family: var(--display); font-weight: 700; font-size: 16px; margin-bottom: 8px; line-height: 1.35; }
.criteria-card p { font-size: 13px; font-weight: 300; color: rgba(245,243,239,0.5); line-height: 1.6; }

/* ── CONTACT ── */
#contact { padding: 120px 48px; }
.contact-head { max-width: 640px; margin-bottom: 64px; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  max-width: 620px;
  margin: 0;
  gap: 2px;
  background: var(--border);
}
.contact-card { background: var(--charcoal); padding: 48px 44px; }
.contact-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 22px;
}
.tag-label { color: var(--accent); border: 1px solid rgba(139,61,255,0.45); }
.tag-partner { color: var(--accent2); border: 1px solid rgba(200,184,255,0.45); }
.contact-card h3 { font-family: var(--display); font-weight: 700; font-size: 24px; margin-bottom: 10px; }
.contact-card > p { font-size: 15px; font-weight: 300; color: rgba(245,243,239,0.55); margin-bottom: 30px; line-height: 1.7; }
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mid);
}
.field input, .field textarea {
  background: var(--black);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 13px 16px;
  color: var(--white);
  font-family: var(--body);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}
.field input:focus, .field textarea:focus { border-color: var(--accent); }
.field textarea { resize: vertical; min-height: 110px; }
.field input::placeholder, .field textarea::placeholder { color: rgba(245,243,239,0.25); }
.contact-form button[type="submit"] {
  background: var(--accent);
  color: #fff;
  font-family: var(--body);
  font-weight: 600;
  font-size: 15px;
  padding: 14px 32px;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  letter-spacing: 0.02em;
  margin-top: 6px;
}
.contact-form button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(139,61,255,0.35);
}

/* ── FOOTER ── */
footer {
  padding: 40px 48px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
footer p { font-size: 13px; color: var(--mid); }
.footer-links { display: flex; gap: 28px; }
.footer-links a { font-size: 13px; color: var(--mid); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--white); }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  nav.nav { padding: 16px 22px; }
  .nav-links { display: none; }
  #hero { padding: 110px 24px 120px; }
  .hero-ticker { display: none; }
  #stats { grid-template-columns: repeat(2, 1fr); }
  .stat-cell { padding: 32px 24px; }
  #opportunity, #model, #labels, #partners, #contact { padding: 80px 24px; }
  .split-header { grid-template-columns: 1fr; gap: 20px; }
  .opp-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr 1fr; gap: 44px; }
  .process-steps::before { display: none; }
  .model-callout { grid-template-columns: 1fr; gap: 32px; padding: 36px 28px; }
  .callout-stats { justify-content: flex-start; }
  #labels { grid-template-columns: 1fr; gap: 60px; }
  .why-card-stack { height: 280px; }
  .criteria-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  footer { flex-direction: column; text-align: center; }
}

@media (max-width: 560px) {
  .stat-num { font-size: 40px; }
  .criteria-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .contact-card { padding: 36px 26px; }
}

@media (prefers-reduced-motion: reduce) {
  .ticker-inner, .marquee-inner { animation: none; }
  * { transition: none !important; }
}