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

:root {
  --brand: #6E56CF;
  --brand-hover: #7C62D4;
  --brand-soft: #EEEDFE;
  --bg: #F7F7F8;
  --surface: #FFFFFF;
  --surface-t: #F0F0F2;
  --border: #E4E4E7;
  --border-strong: #C4C4CC;
  --text-primary: #111118;
  --text-secondary: #52525C;
  --text-tertiary: #8C8C99;
  --urgent: #E5484D;
  --normal: #F59E0B;
  --low: #30A46C;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 247, 248, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 32px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-logo-img {
  height: 28px;
  width: auto;
  display: block;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
  border: none;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  padding: 9px 18px;
  height: 36px;
}

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

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 9px 14px;
  height: 36px;
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--surface);
  color: var(--text-primary);
}

.btn-large {
  height: 44px;
  padding: 12px 24px;
  font-size: 14px;
  border-radius: 10px;
}

/* HERO */
.hero {
  max-width: 800px;
  margin: 0 auto;
  padding: 96px 32px 72px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 28px;
  letter-spacing: 0.01em;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--brand);
  border-radius: 50%;
}

h1 {
  font-size: clamp(36px, 5vw, 54px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

h1 span {
  color: var(--brand);
}

.hero-sub {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 520px;
  margin: 0 auto 36px;
  font-weight: 400;
}

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

.hero-note {
  margin-top: 14px;
  font-size: 12px;
  color: var(--text-tertiary);
}

/* PRODUCT PREVIEW */
.preview-wrap {
  max-width: 960px;
  margin: 0 auto 80px;
  padding: 0 32px;
}

.preview-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.preview-bar {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.preview-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.preview-inner {
  display: grid;
  grid-template-columns: 200px 1fr;
  min-height: 380px;
}

.preview-sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 16px 12px;
}

.preview-section-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0 4px;
  margin-bottom: 6px;
}

.preview-nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 2px;
  cursor: default;
}

.preview-nav-item.active {
  background: var(--brand-soft);
  color: var(--brand);
}

.preview-nav-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.preview-main {
  padding: 24px;
  background: var(--bg);
}

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

.preview-client-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  cursor: default;
  transition: all 0.15s;
}

.preview-client-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  border-color: var(--border-strong);
}

.preview-client-card.active-card {
  border-color: var(--brand);
  box-shadow: 0 0 0 1px var(--brand);
  background: #FDFCFF;
}

.preview-card-top {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 10px;
}

.preview-priority-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.preview-tag {
  font-size: 10px;
  color: var(--text-tertiary);
  background: var(--surface-t);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
}

.preview-avatar {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.preview-client-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.preview-client-type {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-bottom: 10px;
}

.preview-favicons {
  display: flex;
  gap: 4px;
  margin-bottom: 10px;
}

.preview-favicon {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  background: var(--surface-t);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
}

.preview-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preview-stats {
  font-size: 10px;
  color: var(--text-tertiary);
}

.preview-switch-btn {
  background: var(--brand);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 5px;
  cursor: default;
}

/* BRIEFING OVERLAY */
.preview-briefing {
  grid-column: 1 / -1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--brand);
  border-radius: 10px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.preview-briefing-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.preview-briefing-content {
  flex: 1;
}

.preview-briefing-action {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.preview-briefing-meta {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 1px;
}

.preview-briefing-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--urgent);
  background: #FEF2F2;
  padding: 3px 8px;
  border-radius: 5px;
  white-space: nowrap;
}

/* SECTION */
.section {
  max-width: 960px;
  margin: 0 auto;
  padding: 80px 32px;
}

.section-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.65;
}

/* PROBLEM CARDS */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.problem-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.problem-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: #FEF2F2;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.problem-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.problem-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* FEATURES */
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 48px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}

.feature-card.featured {
  border-color: var(--brand);
  background: #FDFCFF;
}

.feature-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--brand-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* COMPARISON */
.comparison-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  margin-top: 48px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
}

.comparison-table th {
  padding: 16px 24px;
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.comparison-table th.highlight {
  color: var(--brand);
  background: var(--brand-soft);
}

.comparison-table td {
  padding: 14px 24px;
  font-size: 13px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.comparison-table td:first-child {
  color: var(--text-primary);
  font-weight: 500;
}

.comparison-table td.highlight {
  color: var(--brand);
  font-weight: 600;
  background: #FDFCFF;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.check {
  color: var(--low);
  font-weight: 700;
}

.cross {
  color: var(--urgent);
}

.partial {
  color: var(--normal);
}

/* PRICING */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 48px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
}

.pricing-card.featured {
  border-color: var(--brand);
  border-width: 2px;
  background: #FDFCFF;
  position: relative;
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 100px;
  white-space: nowrap;
}

.pricing-plan {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.pricing-price {
  font-size: 38px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 4px;
}

.pricing-price span {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: 0;
}

.pricing-note {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}

.pricing-divider {
  height: 1px;
  background: var(--border);
  margin-bottom: 20px;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.pricing-features li .check {
  flex-shrink: 0;
  margin-top: 1px;
}

/* TESTIMONIAL */
.quote-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.quote-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.quote-text {
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.65;
  margin-bottom: 16px;
}

.quote-author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.quote-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.quote-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.quote-role {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* FAQ */
.faq-list {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: background 0.1s;
}

.faq-question:hover {
  background: var(--bg);
}

.faq-answer {
  padding: 0 24px 18px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: none;
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-chevron {
  transition: transform 0.15s;
  flex-shrink: 0;
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
}

/* CTA BANNER */
.cta-banner {
  background: var(--brand);
  border-radius: 16px;
  padding: 56px 48px;
  text-align: center;
  margin: 0 32px 80px;
  max-width: 896px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner h2 {
  color: #fff;
  margin-bottom: 12px;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 16px;
  margin-bottom: 32px;
}

.btn-white {
  background: #fff;
  color: var(--brand);
  font-weight: 700;
}

.btn-white:hover {
  background: #F5F3FF;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 960px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color 0.1s;
}

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

.footer-copy {
  font-size: 13px;
  color: var(--text-tertiary);
}

/* DIVIDER */
.section-divider {
  height: 1px;
  background: var(--border);
  max-width: 960px;
  margin: 0 auto;
}

/* ROI BOX */
.roi-box {
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, rgba(110, 86, 207, 0.05) 0%, rgba(110, 86, 207, 0.02) 100%);
  border: 1px solid var(--brand-soft);
  border-radius: 12px;
  padding: 16px 24px;
  max-width: 520px;
  margin: 0 auto 36px;
  box-shadow: 0 4px 12px rgba(110, 86, 207, 0.05);
}

.roi-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.roi-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.roi-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* PRICING TOGGLE */
.pricing-toggle-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 32px;
}

.pricing-toggle {
  display: inline-flex;
  background: var(--surface-t);
  border: 1px solid var(--border);
  padding: 4px;
  border-radius: 100px;
}

.toggle-btn {
  background: transparent;
  border: none;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 20px;
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toggle-btn:hover {
  color: var(--text-primary);
}

.toggle-btn.active {
  background: var(--surface);
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.save-badge {
  background: #DCFCE7;
  color: #166534;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* HOW BRIEFING VISUAL */
.how-briefing-visual {
  position: relative;
  max-width: 600px;
  margin: 0 auto 48px;
  padding: 40px;
  background: radial-gradient(circle at center, var(--brand-soft) 0%, transparent 70%);
  display: flex;
  justify-content: center;
  align-items: center;
}

.floating-briefing {
  box-shadow: 0 12px 32px rgba(110, 86, 207, 0.15);
  transform: translateY(0);
  animation: float 6s ease-in-out infinite;
  z-index: 2;
  width: 100%;
}

.briefing-cursor {
  position: absolute;
  bottom: 20px;
  right: 120px;
  z-index: 3;
  animation: cursorMove 2s ease-out forwards, cursorClick 0.5s 2s forwards;
}

@keyframes float {
  0% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
  100% { transform: translateY(0); }
}

@keyframes cursorMove {
  0% { transform: translate(60px, 60px); opacity: 0; }
  10% { opacity: 1; }
  100% { transform: translate(0, 0); }
}

@keyframes cursorClick {
  0% { transform: scale(1); }
  50% { transform: scale(0.9); }
  100% { transform: scale(1); }
}

@media (max-width: 720px) {
  .problem-grid,
  .features-grid,
  .quote-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  .preview-sidebar {
    display: none;
  }

  h1 {
    font-size: 32px;
  }

  .hero {
    padding: 64px 20px 48px;
  }

  .section {
    padding: 56px 20px;
  }

  footer {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .how-briefing-visual {
    padding: 20px;
  }
}