/* ─── Hero ─── */
.hero {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center; padding: 140px 24px 80px;
  overflow: hidden; background: var(--white); position: relative;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero-gradient-wrap { position: absolute; inset: 0; overflow: hidden; clip-path: inset(0); }
#hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; opacity: .72; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent-light); border: 1px solid rgba(0,87,255,.18);
  padding: 8px 18px; border-radius: 100px;
  font-size: 13px; font-weight: 500; color: var(--accent);
  margin-bottom: 36px; letter-spacing: .01em; position: relative; z-index: 1;
}
.hero-badge-dot {
  width: 6px; height: 6px; background: var(--accent); border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

.hero-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(52px,8vw,96px); font-weight: 800;
  line-height: .95; letter-spacing: -.03em; color: var(--black);
  margin-bottom: 28px; max-width: 900px; position: relative; z-index: 1;
}
.hero-title .accent-word {
  color: var(--accent); position: relative; display: inline-block;
}
.hero-title .accent-word::after {
  content: ''; position: absolute; bottom: 4px; left: 0; right: 0;
  height: 3px; background: var(--accent); border-radius: 2px;
  transform: scaleX(0); transform-origin: left;
  animation: underline-draw .6s var(--transition) 1.2s forwards;
}
@keyframes underline-draw { to { transform: scaleX(1); } }

.hero-sub {
  font-size: clamp(16px,2vw,20px); font-weight: 300; color: var(--gray-500);
  max-width: 560px; line-height: 1.65; margin-bottom: 52px;
  position: relative; z-index: 1;
}

.hero-ctas {
  display: flex; align-items: center; gap: 16px;
  flex-wrap: wrap; justify-content: center;
  position: relative; z-index: 1;
}

.hero-cards {
  margin-top: 44px; display: flex; gap: 16px; justify-content: center;
  flex-wrap: wrap; position: relative; z-index: 1;
}
.hero-card-float {
  background: var(--white); border: 1px solid var(--gray-200); border-radius: 16px;
  padding: 16px 20px; display: flex; align-items: center; gap: 12px;
  font-size: 13px; font-weight: 500; color: var(--gray-600);
  box-shadow: 0 4px 20px rgba(0,0,0,.06);
  transition: transform var(--transition), box-shadow var(--transition);
}
.hero-card-float:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,.1); }
.hero-card-float .icon {
  width: 32px; height: 32px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.icon-blue { background: var(--accent-light); }
.icon-green { background: var(--green-light); }
.icon-gray { background: var(--gray-100); }

/* ─── Services ─── */
.services { padding: 120px 48px; background: var(--white); }
.services-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 24px; max-width: 1200px; margin: 0 auto;
}

.service-card {
  background: var(--gray-50); border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg); padding: 48px 40px;
  text-decoration: none; display: flex; flex-direction: column;
  transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform var(--transition);
}
.service-card:hover {
  background: var(--white); border-color: rgba(0,87,255,.2);
  transform: translateY(-4px); box-shadow: 0 24px 60px rgba(0,0,0,.09);
}
.service-card:hover::before { transform: scaleX(1); }

.service-card-dark {
  background: linear-gradient(135deg, var(--black) 0%, var(--gray-700) 100%);
  border-color: transparent; grid-row: span 1;
}
.service-card-dark:hover {
  background: linear-gradient(135deg, #0a0a1a 0%, #1a1a2e 100%);
  border-color: rgba(0,87,255,.4);
  box-shadow: 0 24px 60px rgba(0,0,0,.3), 0 0 80px rgba(0,87,255,.1);
}

.service-card-num {
  font-size: 11px; font-weight: 500; color: var(--gray-300);
  text-transform: uppercase; letter-spacing: .1em; margin-bottom: 16px;
}
.service-card-dark .service-card-num { color: rgba(255,255,255,.25); }

.service-card-icon { font-size: 32px; margin-bottom: 20px; }

.service-card-title {
  font-family: 'Syne', sans-serif; font-size: 24px; font-weight: 700;
  letter-spacing: -.02em; color: var(--black); margin-bottom: 14px; line-height: 1.2;
}
.service-card-dark .service-card-title { color: var(--white); }

.service-card-desc {
  font-size: 15px; font-weight: 300; color: var(--gray-500);
  line-height: 1.7; flex: 1; margin-bottom: 28px;
}
.service-card-dark .service-card-desc { color: rgba(255,255,255,.45); }

.service-card-link {
  font-size: 14px; font-weight: 500; color: var(--gray-400);
  transition: color var(--transition-fast);
}
.service-card:hover .service-card-link { color: var(--black); }
.service-card-dark .service-card-link { color: rgba(255,255,255,.4); }
.service-card-dark:hover .service-card-link { color: var(--white); }
.service-card-link-accent { color: var(--accent); }
.service-card:hover .service-card-link-accent { color: var(--accent); }

/* ─── Why ─── */
.why {
  padding: 120px 48px; background: var(--black);
  position: relative; overflow: hidden;
}
.why-bg-grid {
  position: absolute; inset: -40px;
  background-image:
    linear-gradient(rgba(0,87,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,87,255,.05) 1px, transparent 1px);
  background-size: 80px 80px;
}
.why .section-title { color: var(--white); }
.why .section-tag { color: rgba(0,87,255,.8); }
.why-split {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; max-width: 1200px; margin: 0 auto;
  align-items: start; position: relative;
}
.why-left .section-header { text-align: left; margin-bottom: 48px; }
.why-points { display: flex; flex-direction: column; }
.why-point {
  padding: 28px 0; border-bottom: 1px solid rgba(255,255,255,.07);
  display: flex; align-items: flex-start; gap: 20px;
  cursor: pointer; transition: opacity var(--transition); opacity: .6;
}
.why-point:hover, .why-point.active { opacity: 1; }
.why-point-num {
  font-family: 'Syne', sans-serif; font-size: 12px; font-weight: 700;
  color: var(--accent); padding-top: 2px; min-width: 20px;
}
.why-point-content h4 {
  font-family: 'Syne', sans-serif; font-size: 18px; font-weight: 700;
  color: var(--white); margin-bottom: 8px; letter-spacing: -.01em;
}
.why-point-content p { font-size: 14px; font-weight: 300; color: rgba(255,255,255,.4); line-height: 1.6; }
.why-right { position: sticky; top: 120px; }
.why-visual {
  background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg); padding: 40px; min-height: 400px;
  position: relative; overflow: hidden;
}
.why-ring {
  width: 200px; height: 200px; border: 1px solid rgba(0,87,255,.2);
  border-radius: 50%; position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%); animation: ring-pulse 3s ease-in-out infinite;
}
.why-ring-2 { width: 300px; height: 300px; animation-delay: .5s; }
.why-ring-3 { width: 380px; height: 380px; animation-delay: 1s; }
@keyframes ring-pulse {
  0%,100% { opacity: .3; transform: translate(-50%,-50%) scale(1); }
  50% { opacity: .7; transform: translate(-50%,-50%) scale(1.04); }
}
.why-stat-group { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; position: relative; z-index: 2; }
.why-stat {
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
  border-radius: 16px; padding: 24px;
  transition: background var(--transition), border-color var(--transition);
}
.why-stat:hover { background: rgba(0,87,255,.08); border-color: rgba(0,87,255,.3); }
.why-stat-num {
  font-family: 'Syne', sans-serif; font-size: 40px; font-weight: 800;
  color: var(--white); letter-spacing: -.04em; line-height: 1; margin-bottom: 8px;
}
.why-stat-num span { color: var(--accent); }
.why-stat-label { font-size: 13px; font-weight: 300; color: rgba(255,255,255,.4); line-height: 1.4; }

/* ─── How ─── */
.how { padding: 120px 48px; background: var(--gray-50); }
.how-steps {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 0; max-width: 1200px; margin: 0 auto; position: relative;
}
.how-steps::before {
  content: ''; position: absolute;
  top: 32px; left: calc(12.5% + 32px); right: calc(12.5% + 32px);
  height: 1px;
  background: linear-gradient(90deg, var(--accent), rgba(0,87,255,.2), var(--accent));
  background-size: 200% 100%; animation: gradient-shift 4s linear infinite;
}
.how-step { text-align: center; padding: 0 24px; position: relative; }
.how-step-num {
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--white); border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Syne', sans-serif; font-size: 20px; font-weight: 800; color: var(--accent);
  margin: 0 auto 28px; position: relative; z-index: 1;
  transition: background var(--transition), color var(--transition);
}
.how-step:hover .how-step-num { background: var(--accent); color: var(--white); }
.how-step-title { font-family: 'Syne', sans-serif; font-size: 18px; font-weight: 700; letter-spacing: -.01em; margin-bottom: 12px; color: var(--black); }
.how-step-desc { font-size: 14px; font-weight: 300; color: var(--gray-400); line-height: 1.65; }

/* ─── How detail button ─── */
.btn-how-detail {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 36px; border-radius: 100px;
  border: 1.5px solid var(--gray-200);
  font-size: 15px; font-weight: 500; color: var(--black);
  text-decoration: none;
  transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  letter-spacing: .01em;
}
.btn-how-detail:hover {
  border-color: var(--accent); background: var(--accent); color: var(--white);
  transform: translateY(-2px); box-shadow: 0 16px 40px rgba(0,87,255,.25);
}
.btn-how-detail svg { transition: transform var(--transition-fast); }
.btn-how-detail:hover svg { transform: translateX(3px); }

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .hero { padding: 120px 32px 72px; }
  .services { padding: 100px 32px; }
  .why { padding: 100px 32px; }
  .why-split { grid-template-columns: 1fr; gap: 48px; }
  .why-right { position: relative; top: auto; }
  .why-ring-3 { width: 320px; height: 320px; }
  .how { padding: 100px 32px; }
  .how-steps { grid-template-columns: 1fr 1fr; gap: 40px; }
  .how-steps::before { display: none; }
}
@media (max-width: 768px) {
  .hero { padding: 104px 20px 64px; }
  .hero-badge { font-size: 12px; padding: 7px 14px; margin-bottom: 28px; }
  .hero-sub { font-size: 16px; margin-bottom: 40px; }
  .hero-ctas { flex-direction: column; align-items: stretch; gap: 12px; }
  .btn-primary, .btn-secondary { justify-content: center; }
  .hero-cards { gap: 10px; }
  .hero-card-float { font-size: 12px; padding: 12px 16px; }
  .services { padding: 80px 20px; }
  .services-grid { grid-template-columns: 1fr; gap: 16px; }
  .service-card { padding: 36px 28px; }
  .why { padding: 80px 20px; }
  .why-split { gap: 40px; }
  .why-visual { padding: 28px; min-height: 320px; }
  .why-ring { width: 160px; height: 160px; }
  .why-ring-2 { width: 240px; height: 240px; }
  .why-ring-3 { width: 300px; height: 300px; }
  .why-stat-num { font-size: 32px; }
  .how { padding: 80px 20px; }
  .how-steps { grid-template-columns: 1fr; gap: 32px; max-width: 420px; margin: 0 auto; }
  .how-step { padding: 0 16px; }
}
@media (max-width: 480px) {
  .hero { padding: 96px 16px 56px; }
  .hero-cards { flex-direction: column; align-items: stretch; }
  .hero-card-float { justify-content: flex-start; }
  .services { padding: 64px 16px; }
  .service-card { padding: 28px 22px; }
  .why { padding: 64px 16px; }
  .why-stat-group { grid-template-columns: 1fr 1fr; gap: 10px; }
  .why-stat { padding: 18px; }
  .why-stat-num { font-size: 28px; }
  .why-stat-label { font-size: 11px; }
  .how { padding: 64px 16px; }
  .how-step-num { width: 52px; height: 52px; font-size: 18px; }
}