:root {
  --ink: #101827;
  --muted: #5f6b7a;
  --line: #dfe5ee;
  --paper: #ffffff;
  --soft: #f4f7fb;
  --blue: #2858e6;
  --blue-dark: #153aa8;
  --green: #138a57;
  --red: #b42318;
  --amber: #a15c07;
  --shadow: 0 22px 60px rgba(16, 24, 39, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
  gap: 14px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--blue);
  font-size: 1.16rem;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-actions a {
  min-height: 44px;
  padding: 10px 12px;
  border-radius: 10px;
  color: #313947;
  font-size: 0.98rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-actions a:active,
.nav-actions a:hover {
  color: var(--blue);
  background: #eef3ff;
}

.nav-actions .nav-register {
  color: var(--paper);
  background: var(--blue);
}

.nav-actions .nav-register:active,
.nav-actions .nav-register:hover {
  color: var(--paper);
  background: var(--blue-dark);
}

.hero {
  position: relative;
  overflow: hidden;
  background: #eef3fb;
}

.hero-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 44px;
}

.hero-copy {
  max-width: 640px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  background: #e7eefc;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.cta-section h2 {
  margin: 0;
  color: var(--ink);
  letter-spacing: 0;
  line-height: 1.04;
}

.hero h1 {
  max-width: 12ch;
  margin-top: 22px;
  font-size: 2.9rem;
}

.hero p {
  max-width: 560px;
  margin: 22px 0 0;
  color: #4d5968;
  font-size: 1.1rem;
  line-height: 1.35;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 14px 22px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 800;
  text-decoration: none;
}

.btn-primary {
  color: var(--paper);
  background: var(--blue);
  box-shadow: 0 14px 28px rgba(40, 88, 230, 0.24);
}

.btn-primary:hover {
  background: var(--blue-dark);
}

.btn-secondary {
  color: #273141;
  background: #e6eaf1;
}

.btn-secondary:hover {
  background: #d9e0ea;
}

.mobile-preview {
  width: 100%;
  margin-top: 34px;
  padding: 16px;
  border: 1px solid #d7e0ec;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow);
}

.preview-header {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 0.86rem;
}

.preview-header strong {
  color: var(--ink);
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.preview-tile {
  min-height: 88px;
  padding: 14px;
  border: 1px solid #dfe5ee;
  border-radius: 14px;
  background: var(--paper);
}

.preview-tile span,
.proof-item span,
.feature-card p,
.step-card p,
.cta-section p {
  color: var(--muted);
}

.preview-tile strong {
  display: block;
  margin-top: 6px;
  color: var(--ink);
  font-size: 1.2rem;
}

.preview-tile.danger {
  border-color: #f3b7b0;
  background: #fff5f3;
}

.preview-tile.danger strong {
  color: var(--red);
}

.preview-tile.warning {
  border-color: #f4d39a;
  background: #fff9ed;
}

.preview-tile.warning strong {
  color: var(--amber);
}

.proof-band,
.section,
.cta-section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.proof-band {
  display: grid;
  gap: 12px;
  padding: 32px 0 12px;
}

.proof-item {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--paper);
}

.proof-item strong {
  display: block;
  margin-bottom: 4px;
}

.section {
  padding: 56px 0;
}

.section-light {
  padding-top: 42px;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 24px;
}

.section-heading h2,
.cta-section h2 {
  margin-top: 16px;
  font-size: 2rem;
}

.steps-grid,
.feature-grid {
  display: grid;
  gap: 14px;
}

.step-card,
.feature-card {
  min-height: 190px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
  box-shadow: 0 14px 34px rgba(16, 24, 39, 0.06);
}

.step-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  color: var(--paper);
  background: var(--blue);
  font-weight: 900;
}

.step-card h3,
.feature-card h3 {
  margin: 18px 0 8px;
  font-size: 1.2rem;
}

.step-card p,
.feature-card p {
  margin: 0;
}

.cta-section {
  display: grid;
  gap: 22px;
  margin-bottom: 58px;
  padding: 28px;
  border: 1px solid #c7d5ef;
  border-radius: 22px;
  background: linear-gradient(135deg, #ffffff 0%, #eef4ff 100%);
  box-shadow: var(--shadow);
}

.cta-section p {
  margin: 16px 0 0;
  font-size: 1.08rem;
}

.cta-actions {
  margin-top: 0;
}

.site-footer {
  padding: 26px 16px;
  color: #cbd5e1;
  background: #101827;
  text-align: center;
}

@media (min-width: 520px) {
  .proof-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .proof-item:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 780px) {
  .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    color: var(--paper);
    background: #16233a;
    font-size: 0.82rem;
  }

  .nav-actions {
    gap: 12px;
  }

  .nav-actions a {
    padding: 10px 16px;
  }

  .hero-inner {
    padding: 82px 0 70px;
  }

  .hero h1 {
    max-width: 10ch;
    font-size: 4.4rem;
  }

  .hero p {
    max-width: 520px;
    font-size: 1.22rem;
  }

  .section-heading h2,
  .cta-section h2 {
    font-size: 3rem;
  }

  .mobile-preview {
    width: min(100%, 470px);
    margin-top: 34px;
  }

  .proof-band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 0;
    padding-top: 32px;
    position: relative;
    z-index: 3;
  }

  .proof-item:last-child {
    grid-column: auto;
  }

  .steps-grid,
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cta-section {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1040px) {
  .hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.72fr);
    align-items: center;
    gap: 46px;
    padding-top: 96px;
  }

  .mobile-preview {
    margin-top: 0;
    justify-self: end;
  }

  .hero h1 {
    font-size: 5rem;
  }

  .hero p {
    font-size: 1.32rem;
  }

  .section-heading h2,
  .cta-section h2 {
    font-size: 3.7rem;
  }

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

@media (max-width: 390px) {
  .top-nav {
    width: min(100% - 24px, 1180px);
  }

  .brand-link {
    gap: 0;
    font-size: 1.02rem;
  }

  .nav-actions a {
    min-height: 40px;
    padding: 8px 9px;
    font-size: 0.9rem;
  }

  .hero-inner,
  .proof-band,
  .section,
  .cta-section {
    width: min(100% - 24px, 1180px);
  }

  .hero h1 {
    font-size: 2.55rem;
  }

  .btn {
    flex: 1 1 130px;
  }
}