*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --gray-50: #f9f9f9;
  --gray-100: #f2f2f2;
  --gray-200: #e5e5e5;
  --gray-400: #a0a0a0;
  --gray-600: #6b6b6b;
  --gray-800: #2a2a2a;
  --accent: #1a1a1a;
  --accent-light: #3d3d3d;
  --radius: 10px;
  --max-width: 1100px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--white);
  color: var(--black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
  display: block;
}

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
}

/* ── Nav ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--black);
}

.logo span {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--black);
  border-radius: 50%;
  margin-left: 3px;
  vertical-align: middle;
  margin-bottom: 2px;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--gray-600);
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--black);
}

.nav-cta {
  font-size: 0.875rem;
  font-weight: 600;
  padding: 9px 20px;
  background: var(--black);
  color: var(--white);
  border-radius: var(--radius);
  transition: background 0.2s, transform 0.1s;
}

.nav-cta:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
}

/* ── Hero ── */
#hero {
  padding: 120px 0 96px;
  text-align: center;
  background: var(--white);
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-600);
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 28px;
}

.hero-headline {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--black);
  max-width: 780px;
  margin: 0 auto 24px;
}

.hero-headline em {
  font-style: normal;
  color: var(--gray-400);
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--gray-600);
  max-width: 540px;
  margin: 0 auto 40px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 13px 26px;
  background: var(--black);
  color: var(--white);
  border-radius: var(--radius);
  border: 2px solid var(--black);
  transition: background 0.2s, transform 0.15s;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent-light);
  border-color: var(--accent-light);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 13px 26px;
  background: transparent;
  color: var(--black);
  border-radius: var(--radius);
  border: 2px solid var(--gray-200);
  transition: border-color 0.2s, transform 0.15s;
  cursor: pointer;
}

.btn-secondary:hover {
  border-color: var(--gray-400);
  transform: translateY(-2px);
}

.hero-note {
  margin-top: 16px;
  font-size: 0.8125rem;
  color: var(--gray-400);
}

/* ── Dashboard preview ── */
.dashboard-preview {
  margin-top: 72px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--gray-200);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.08);
}

.preview-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #28c840; }

.preview-url {
  margin-left: 12px;
  font-size: 0.8rem;
  color: var(--gray-400);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: 4px 14px;
  flex: 1;
  max-width: 360px;
}

.preview-body {
  background: var(--gray-50);
  padding: 32px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 20px;
  min-height: 340px;
}

.preview-sidebar {
  background: var(--white);
  border-radius: 10px;
  border: 1px solid var(--gray-200);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebar-item {
  font-size: 0.8125rem;
  color: var(--gray-600);
  padding: 8px 12px;
  border-radius: 7px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-item.active {
  background: var(--black);
  color: var(--white);
  font-weight: 600;
}

.sidebar-icon {
  width: 16px;
  height: 16px;
  opacity: 0.6;
}

.sidebar-item.active .sidebar-icon {
  opacity: 1;
}

.preview-main {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.preview-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.stat-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  padding: 16px;
}

.stat-label {
  font-size: 0.7rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--black);
}

.stat-sub {
  font-size: 0.7rem;
  color: var(--gray-400);
  margin-top: 2px;
}

.preview-reviews {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.review-row {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gray-200);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-600);
}

.review-info {
  flex: 1;
  min-width: 0;
}

.review-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--black);
}

.review-text {
  font-size: 0.75rem;
  color: var(--gray-600);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.review-stars {
  font-size: 0.7rem;
  color: #f59e0b;
  letter-spacing: 1px;
}

.review-badge {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 999px;
}

.review-badge.needs {
  background: #fef3c7;
  color: #92400e;
}

.review-badge.sent {
  background: #d1fae5;
  color: #065f46;
}

.review-badge.flagged {
  background: #fee2e2;
  color: #991b1b;
}

/* ── How it works ── */
#how {
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.75px;
  color: var(--black);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--gray-600);
  max-width: 520px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 56px;
}

.step {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 32px 28px;
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--black);
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.step-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.65;
}

/* ── Features ── */
#features {
  background: var(--white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 56px;
}

.feature-card {
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 32px 28px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  border-color: var(--gray-400);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.25rem;
}

.feature-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.65;
}

/* ── CTA Banner ── */
#cta {
  padding: 96px 0;
  background: var(--black);
  text-align: center;
}

#cta .section-label {
  color: rgba(255, 255, 255, 0.4);
}

#cta .section-title {
  color: var(--white);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

#cta .section-desc {
  color: rgba(255, 255, 255, 0.6);
  margin: 16px auto 40px;
}

.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 13px 26px;
  background: var(--white);
  color: var(--black);
  border-radius: var(--radius);
  border: 2px solid var(--white);
  transition: background 0.2s, transform 0.15s;
  cursor: pointer;
}

.btn-white:hover {
  background: var(--gray-100);
  transform: translateY(-2px);
}

/* ── Footer ── */
footer {
  background: var(--white);
  border-top: 1px solid var(--gray-200);
  padding: 48px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.footer-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--gray-600);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--black);
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--gray-400);
  width: 100%;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  section { padding: 72px 0; }
  #hero { padding: 80px 0 64px; }

  .nav-links { display: none; }

  .preview-body {
    grid-template-columns: 1fr;
  }

  .preview-sidebar { display: none; }

  .preview-stat-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-copy {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .preview-stat-row {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
}