.marketing-page {
  min-height: 100vh;
  position: relative;
}

.marketing-page::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.014) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.014) 1px, transparent 1px);
  background-size: 20px 20px;
  mask-image: radial-gradient(circle at center, black 42%, transparent 100%);
}

.marketing-main,
.marketing-section,
.marketing-hero {
  position: relative;
  z-index: 1;
}

.marketing-hero {
  min-height: calc(100svh - 86px);
  width: min(1360px, calc(100% - 48px));
  margin: 0 auto;
  padding: 18px 0 88px;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(380px, 1fr);
  gap: 54px;
  align-items: center;
}

.hero-copy h1,
.principles-hero h1 {
  margin: 0;
  letter-spacing: -0.05em;
  text-wrap: balance;
}

.hero-line-nowrap {
  white-space: nowrap;
}

.hero-copy h1 {
  max-width: 9ch;
  font-size: clamp(3.8rem, 7vw, 6.6rem);
  line-height: 0.92;
}

.hero-lead,
.principles-lead,
.section-copy p,
.support-grid p,
.surface p,
.output-list,
.principles-steps p,
.principles-template p,
.principles-note {
  color: var(--muted);
}

.hero-lead,
.principles-lead {
  max-width: 34ch;
  margin: 22px 0 0;
  font-size: 1.04rem;
  line-height: 1.72;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-visual {
  min-height: 620px;
  position: relative;
  overflow: hidden;
  border-radius: 40px;
  border: 1px solid rgba(255, 255, 255, 0.78);
  background:
    radial-gradient(circle at 68% 24%, rgba(255, 255, 255, 0.95), transparent 24%),
    linear-gradient(140deg, #eef2ff 0%, #f8fafc 42%, #e7ecf6 100%);
  box-shadow: var(--shadow-soft);
}

.hero-glow {
  position: absolute;
  inset: 12% 10% auto auto;
  width: 340px;
  height: 340px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.18) 0%, rgba(37, 99, 235, 0) 70%);
  animation: heroGlow 8s ease-in-out infinite;
}

.hero-plane,
.output-preview,
.surface-panel,
.surface-focus,
.principles-step,
.principles-template {
  backdrop-filter: blur(18px);
}

.hero-plane {
  position: absolute;
  display: grid;
  gap: 10px;
  padding: 24px;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.86);
  background: rgba(255, 255, 255, 0.56);
}

.hero-plane p {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.hero-plane strong {
  font-size: 2rem;
  letter-spacing: -0.04em;
}

.hero-plane span {
  max-width: 18ch;
  line-height: 1.55;
}

.hero-plane-main {
  left: 9%;
  top: 14%;
  width: min(390px, 74%);
}

.hero-plane-secondary {
  right: 12%;
  bottom: 16%;
  width: min(320px, 62%);
}

.hero-line {
  position: absolute;
  border-top: 1px solid rgba(37, 99, 235, 0.24);
  transform-origin: left center;
}

.hero-line-a {
  left: 37%;
  top: 33%;
  width: 180px;
  transform: rotate(27deg);
}

.hero-line-b {
  left: 27%;
  bottom: 32%;
  width: 220px;
  transform: rotate(-18deg);
}

.hero-caption {
  position: absolute;
  left: 9%;
  bottom: 9%;
  max-width: 24ch;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.46);
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.marketing-section {
  padding: 0 0 var(--space-8);
}

.marketing-section.is-divided {
  padding-top: 8px;
  border-top: 1px solid rgba(15, 23, 42, 0.07);
}

.section-intro {
  max-width: 780px;
  margin-bottom: 30px;
}

.section-intro h2,
.section-copy h2,
.cta-strip h2,
.principles-step h3,
.principles-template h3,
.principles-hero h1 {
  margin: 0;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.section-intro h2,
.section-copy h2,
.cta-strip h2,
.principles-hero h1 {
  font-size: clamp(2rem, 3vw, 3.2rem);
  line-height: 1.02;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
}

.support-grid article {
  padding-top: 18px;
  border-top: 1px solid rgba(15, 23, 42, 0.1);
}

.support-grid span {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.support-grid h3,
.surface h3,
.output-head strong {
  margin: 0 0 8px;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.support-grid p,
.surface p,
.section-copy p,
.principles-step p,
.principles-template p,
.principles-note {
  margin: 0;
  line-height: 1.68;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 0.86fr);
  gap: 40px;
  align-items: start;
}

.surface-samples {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.surface {
  border-radius: var(--radius-lg);
  padding: 22px 24px;
}

.surface-plain {
  border: 1px solid var(--line);
  background: transparent;
}

.surface-panel {
  border: 1px solid var(--line);
  background: var(--surface-panel);
}

.surface-focus {
  border: 1px solid rgba(37, 99, 235, 0.16);
  background: var(--surface-focus);
  box-shadow: var(--shadow-focus);
}

.output-band {
  display: grid;
  gap: 26px;
}

.output-preview {
  padding: 30px;
  border-radius: 32px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.62);
  box-shadow: var(--shadow-soft);
}

.output-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.output-head span {
  color: var(--muted);
  font-size: 0.88rem;
}

.output-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 12px;
  line-height: 1.68;
}

.cta-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding-bottom: 80px;
}

.cta-strip .btn-primary {
  min-width: 164px;
  white-space: nowrap;
}

.principles-main {
  padding: 16px 0 88px;
}

.principles-hero {
  max-width: 900px;
  margin: 0 0 54px;
}

.principles-grid {
  display: grid;
  gap: 18px;
}

.principles-step {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 18px;
  padding: 24px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.6);
}

.principles-step-index {
  width: 56px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.principles-step h3,
.principles-template h3 {
  font-size: 1.18rem;
}

.principles-two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(320px, 0.82fr);
  gap: 38px;
  align-items: start;
}

.principles-template-grid {
  display: grid;
  gap: 14px;
}

.principles-template {
  padding: 22px 24px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.62);
}

.principles-template-meta {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.principles-note {
  padding-top: 18px;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
}

@keyframes heroGlow {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
    opacity: 0.9;
  }
  50% {
    transform: translate3d(-10px, 14px, 0) scale(1.04);
    opacity: 1;
  }
}

@media (max-width: 980px) {
  .marketing-hero,
  .detail-layout,
  .support-grid,
  .principles-two-column {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    max-width: none;
  }

  .support-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .cta-strip {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 760px) {
  .marketing-hero {
    min-height: auto;
    width: min(1360px, calc(100% - 28px));
    gap: 28px;
    padding: 8px 0 56px;
  }

  .hero-copy h1,
  .principles-hero h1 {
    font-size: clamp(2.6rem, 12vw, 3.8rem);
    line-height: 0.95;
  }

  .hero-lead,
  .principles-lead {
    font-size: 0.98rem;
  }

  .hero-visual {
    min-height: 460px;
  }

  .hero-plane-main,
  .hero-plane-secondary {
    position: absolute;
    width: auto;
    left: 16px;
    right: 16px;
  }

  .hero-plane-main {
    top: 18px;
  }

  .hero-plane-secondary {
    bottom: 90px;
  }

  .hero-line {
    display: none;
  }

  .hero-caption {
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: none;
  }

  .principles-step {
    grid-template-columns: 1fr;
  }
}