:root {
  --ink: #11151c;
  --text: #17202c;
  --muted: #667084;
  --line: #d8dde6;
  --surface: #ffffff;
  --blue: #245fdb;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 0%, rgba(242, 78, 130, 0.11), transparent 28%),
    radial-gradient(circle at 88% 5%, rgba(139, 92, 246, 0.13), transparent 32%),
    linear-gradient(180deg, #fbfcff 0%, #f6f8fb 44%, #ffffff 100%);
  font-family: "Inter", "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
}

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

.core-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(82px, 9vw, 140px) clamp(24px, 7vw, 112px) clamp(70px, 8vw, 116px);
}

.core-hero::before {
  content: "";
  position: absolute;
  inset: 8% 6% auto auto;
  width: min(460px, 42vw);
  aspect-ratio: 1;
  border-radius: 999px;
  background:
    radial-gradient(circle at 45% 40%, rgba(255, 255, 255, 0.7), transparent 24%),
    conic-gradient(from 160deg, rgba(242, 78, 130, 0.32), rgba(139, 92, 246, 0.24), rgba(36, 95, 219, 0.22), rgba(242, 78, 130, 0.32));
  filter: blur(4px);
  opacity: 0.56;
}

.core-hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: none;
}

.core-kicker {
  display: inline-flex;
  margin-bottom: 18px;
  color: #8b5cf6;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.core-hero h1 {
  max-width: 980px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(40px, 4.3vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.core-hero p {
  width: 100%;
  max-width: none;
  margin: 24px 0 0;
  color: #5d6879;
  font-size: clamp(17px, 1.45vw, 22px);
  line-height: 1.8;
}

.core-poster-hero-button {
  position: absolute;
  top: calc(clamp(82px, 9vw, 140px) + 58px);
  right: clamp(24px, 7vw, 112px);
  z-index: 2;
}

.core-accent-line {
  display: inline-flex;
  margin-top: 28px;
  padding: 10px 16px;
  border: 1px solid rgba(216, 221, 230, 0.84);
  border-radius: 999px;
  color: #4c5668;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 18px 44px rgba(17, 21, 28, 0.08);
  font-size: 14px;
  font-weight: 800;
}

.core-section {
  padding: 0 clamp(24px, 7vw, 112px) clamp(72px, 8vw, 120px);
}

.core-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.core-card,
.core-point,
.core-flow {
  border: 1px solid rgba(216, 221, 230, 0.82);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 20px 54px rgba(17, 21, 28, 0.08);
  backdrop-filter: blur(18px);
}

.core-card {
  min-height: 226px;
  padding: 24px;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.core-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.34);
  box-shadow: 0 26px 70px rgba(139, 92, 246, 0.13);
}

.core-card span,
.core-point span {
  display: inline-flex;
  margin-bottom: 18px;
  color: #f24e82;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.core-card h2,
.core-point h2 {
  margin: 0;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.core-card p,
.core-point p {
  margin: 14px 0 0;
  color: #667084;
}

.core-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 22px;
  align-items: start;
}

.core-points {
  display: grid;
  gap: 16px;
}

.core-point {
  padding: 24px;
}

.core-flow {
  position: sticky;
  top: 96px;
  padding: 26px;
}

.core-flow h2 {
  margin: 0 0 20px;
  color: var(--ink);
  font-size: 24px;
}

.core-flow ol {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: flow;
}

.core-flow li {
  position: relative;
  min-height: 48px;
  padding-left: 58px;
  color: #4c5668;
  font-weight: 800;
}

.core-flow li::before {
  counter-increment: flow;
  content: counter(flow, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(135deg, #f24e82, #8b5cf6);
  font-size: 12px;
  font-weight: 950;
}

.core-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.core-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 900;
}

.core-button.primary {
  color: #fff;
  background: linear-gradient(120deg, #f24e82, #8b5cf6);
  box-shadow: 0 16px 38px rgba(242, 78, 130, 0.18);
}

.core-button.secondary {
  color: #17202c;
  border: 1px solid rgba(216, 221, 230, 0.9);
  background: rgba(255, 255, 255, 0.76);
}

@media (max-width: 980px) {
  .core-poster-hero-button {
    position: static;
    margin-top: 18px;
  }
}

@media (max-width: 900px) {
  .core-grid,
  .core-detail-layout {
    grid-template-columns: 1fr;
  }

  .core-flow {
    position: static;
  }
}