:root {
  --bg: #f7f8fc;
  --surface: #ffffff;
  --surface-2: #eef2ff;
  --ink: #10131f;
  --muted: rgba(16, 19, 31, 0.68);
  --line: rgba(16, 19, 31, 0.1);
  --blue: #2b59ff;
  --blue-dark: #1637b8;
  --green: #1f9d68;
  --shadow: 0 18px 60px rgba(24, 39, 75, 0.12);
  --max: 1220px;
  --radius: 26px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(43, 89, 255, 0.12), transparent 28%),
    linear-gradient(180deg, #fbfcff 0%, #f3f6fd 40%, #f7f8fc 100%);
  font-family: "Noto Sans SC", sans-serif;
}

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

.header,
.hero,
.trust-band,
.section,
.final-cta {
  width: min(calc(100% - 32px), var(--max));
  margin-inline: auto;
}

.header {
  position: sticky;
  top: 14px;
  z-index: 20;
  margin-top: 14px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(16px);
  box-shadow: 0 12px 30px rgba(24, 39, 75, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--blue), #5f83ff);
  color: #fff;
  font-weight: 800;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong {
  font-family: "Archivo", sans-serif;
  font-size: 0.96rem;
  font-weight: 800;
}

.brand-copy em {
  font-family: "DM Mono", monospace;
  font-style: normal;
  font-size: 0.72rem;
  color: var(--muted);
}

.nav {
  display: inline-flex;
  gap: 18px;
  color: var(--muted);
}

.header-btn,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.header-btn,
.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 12px 24px rgba(43, 89, 255, 0.22);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.7);
  border-color: var(--line);
}

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

.hero {
  padding: 72px 0 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  gap: 22px;
  align-items: center;
}

.tagline,
.eyebrow,
.card-head {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "DM Mono", monospace;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue-dark);
}

.hero h1,
.section-top h2,
.final-card h2 {
  margin: 18px 0 0;
  font-family: "Archivo", sans-serif;
  font-size: clamp(3.2rem, 7vw, 5.8rem);
  line-height: 0.94;
  letter-spacing: -0.05em;
}

.hero-lead,
.benefit p,
.feature-card p,
.faq-answer p,
.final-card p {
  margin-top: 18px;
  color: var(--muted);
  line-height: 1.75;
  font-size: 1rem;
}

.hero-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-points {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-points span,
.eyebrow {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.hero-stack,
.proof-card,
.benefit,
.roi-card,
.feature-card,
.price-card,
.faq-item,
.final-card {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.hero-stack {
  display: grid;
  gap: 16px;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.proof-card,
.benefit,
.roi-card,
.feature-card,
.price-card,
.faq-item,
.final-card {
  border-radius: var(--radius);
}

.proof-card {
  padding: 22px;
}

.proof-card.primary {
  background: linear-gradient(135deg, #edf2ff, #f9fbff);
}

.result-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.result-grid div {
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(43, 89, 255, 0.08);
}

.result-grid strong {
  display: block;
  font-family: "Archivo", sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--blue);
  line-height: 1;
}

.result-grid span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.86rem;
}

.terminal {
  background: #121728;
  color: #eff4ff;
}

.terminal .card-head {
  color: rgba(239, 244, 255, 0.7);
}

.terminal pre {
  margin: 18px 0 0;
  overflow: auto;
  font-family: "DM Mono", monospace;
  font-size: 0.83rem;
  line-height: 1.75;
}

.trust-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.trust-band div {
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(16, 19, 31, 0.06);
}

.trust-band strong {
  display: block;
}

.trust-band span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.section {
  padding: 92px 0 0;
}

.section-top {
  max-width: 760px;
}

.section-top h2,
.final-card h2 {
  font-size: clamp(2.4rem, 5vw, 4rem);
}

.benefit-grid,
.feature-grid,
.pricing-grid {
  margin-top: 28px;
  display: grid;
  gap: 18px;
}

.benefit-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.benefit,
.feature-card,
.price-card {
  padding: 24px;
}

.benefit h3,
.feature-card h3,
.price-card h3,
.faq-question {
  margin: 0;
}

.roi-card {
  margin-top: 28px;
  padding: 26px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 22px;
  align-items: center;
}

.roi-controls label {
  display: block;
  font-weight: 700;
}

.roi-controls input {
  width: 100%;
  margin-top: 16px;
}

.roi-scale {
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
}

.roi-scale strong {
  color: var(--blue);
  font-family: "Archivo", sans-serif;
  font-size: 1.4rem;
}

.roi-output {
  display: grid;
  gap: 12px;
}

.roi-output div {
  padding: 16px;
  border-radius: 18px;
  background: #f6f8ff;
  border: 1px solid rgba(43, 89, 255, 0.08);
}

.roi-output .highlight {
  background: linear-gradient(135deg, var(--blue), #5e81ff);
  color: #fff;
}

.roi-output span {
  display: block;
  font-size: 0.88rem;
  color: inherit;
  opacity: 0.86;
}

.roi-output strong {
  display: block;
  margin-top: 8px;
  font-family: "Archivo", sans-serif;
  font-size: 2rem;
  line-height: 1;
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-id,
.tier {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 10px;
  border-radius: 999px;
  background: #eef2ff;
  color: var(--blue-dark);
  font-family: "DM Mono", monospace;
  font-size: 0.76rem;
}

.feature-card h3 {
  margin-top: 16px;
}

.pricing-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.price-card {
  display: flex;
  flex-direction: column;
}

.price-card.featured {
  background: linear-gradient(180deg, #112055, #1732a4);
  color: #fff;
  transform: translateY(-12px);
}

.price-card.featured .tier {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
}

.price-card.featured .price,
.price-card.featured li {
  color: #fff;
}

.price {
  margin: 16px 0 10px;
  font-family: "Archivo", sans-serif;
  font-size: clamp(2.8rem, 5vw, 4rem);
  line-height: 1;
}

.price span {
  font-size: 1rem;
}

.price-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.price-card li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.price-card li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--green);
}

.price-card .btn {
  margin-top: 22px;
}

.faq-list {
  margin-top: 28px;
  display: grid;
  gap: 14px;
}

.faq-question {
  width: 100%;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 0;
  background: transparent;
  text-align: left;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 200ms ease;
}

.faq-answer p {
  min-height: 0;
  margin: 0;
  padding: 0 24px 0;
}

.faq-item.open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-item.open .faq-answer p {
  padding-bottom: 22px;
}

.final-cta {
  padding: 88px 0 80px;
}

.final-card {
  padding: 32px;
  background: linear-gradient(135deg, #0d1739, #2148d0);
  color: #fff;
}

.final-card .eyebrow {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.18);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 420ms ease, transform 420ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .hero,
  .benefit-grid,
  .feature-grid,
  .pricing-grid,
  .roi-card {
    grid-template-columns: 1fr;
  }

  .trust-band {
    grid-template-columns: 1fr;
  }

  .price-card.featured {
    transform: none;
  }
}

@media (max-width: 820px) {
  .header {
    border-radius: 28px;
    display: grid;
    grid-template-columns: 1fr;
  }

  .nav {
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px 16px;
  }

  .header-btn {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .header,
  .hero,
  .trust-band,
  .section,
  .final-cta {
    width: min(calc(100% - 20px), var(--max));
  }

  .hero {
    padding-top: 42px;
    gap: 16px;
  }

  .hero h1 {
    font-size: clamp(2.8rem, 14vw, 4rem);
  }

  .proof-card,
  .benefit,
  .roi-card,
  .feature-card,
  .price-card,
  .faq-item,
  .final-card {
    padding: 18px;
  }

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

  .btn,
  .header-btn {
    width: 100%;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}