*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #0a0a0f; --surface: #12121a; --border: #1e1e2e;
  --text: #e2e2e8; --muted: #888898; --accent: #6366f1;
  --green: #10b981; --gold: #f59e0b; --red: #ef4444;
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* Breadcrumb */
.breadcrumb { padding: 16px 0; font-size: 0.85rem; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.breadcrumb span { margin: 0 8px; }

/* Hero */
.hero { padding: 80px 0 60px; text-align: center; background: linear-gradient(180deg, #12121a 0%, var(--bg) 100%); }
.hero h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; margin-bottom: 16px; }
.hero h1 span { background: linear-gradient(135deg, var(--accent), var(--green)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero .subtitle { font-size: 1.2rem; color: var(--muted); max-width: 640px; margin: 0 auto; }

/* Stats Bar */
.stats-bar { padding: 40px 0; background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 24px; text-align: center; }
.stat-item .value { font-size: 2rem; font-weight: 800; color: var(--accent); }
.stat-item .label { font-size: 0.85rem; color: var(--muted); margin-top: 4px; }

/* Use Case Cards */
.use-cases-grid { padding: 80px 0; }
.use-cases-grid h2 { font-size: 2rem; font-weight: 700; margin-bottom: 40px; text-align: center; }
.uc-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
.uc-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 32px; transition: border-color 0.3s, transform 0.2s; }
.uc-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.uc-card-icon { font-size: 2rem; margin-bottom: 16px; }
.uc-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.uc-card p { color: var(--muted); margin-bottom: 16px; font-size: 0.95rem; }
.uc-card .bot-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.uc-card .bot-tag { background: rgba(99,102,241,0.1); color: var(--accent); padding: 4px 10px; border-radius: 6px; font-size: 0.8rem; font-weight: 500; }
.uc-card .card-link { color: var(--accent); font-weight: 600; font-size: 0.95rem; }

/* Problem-Solution Section */
.problem-solution { padding: 80px 0; }
.problem-solution h2 { font-size: 2rem; font-weight: 700; margin-bottom: 40px; text-align: center; }
.ps-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.ps-panel { background: var(--surface); border-radius: 12px; padding: 32px; border: 1px solid var(--border); }
.ps-panel.problem { border-left: 4px solid var(--red); }
.ps-panel.solution { border-left: 4px solid var(--green); }
.ps-panel h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; }
.ps-panel.problem h3 { color: var(--red); }
.ps-panel.solution h3 { color: var(--green); }
.ps-panel ul { list-style: none; }
.ps-panel ul li { padding: 8px 0; padding-left: 28px; position: relative; color: var(--muted); }
.ps-panel.problem ul li::before { content: "\2717"; position: absolute; left: 0; color: var(--red); font-weight: 700; }
.ps-panel.solution ul li::before { content: "\2713"; position: absolute; left: 0; color: var(--green); font-weight: 700; }

/* Bot Showcase */
.bot-showcase { padding: 80px 0; border-top: 1px solid var(--border); }
.bot-showcase h2 { font-size: 2rem; font-weight: 700; margin-bottom: 40px; text-align: center; }
.bot-showcase-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; }
.bot-showcase-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 24px; text-align: center; }
.bot-showcase-card .bot-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.bot-showcase-card .bot-desc { color: var(--muted); font-size: 0.9rem; margin-bottom: 12px; }
.bot-showcase-card .bot-price { color: var(--green); font-weight: 700; }

/* Features List */
.features-section { padding: 80px 0; }
.features-section h2 { font-size: 2rem; font-weight: 700; margin-bottom: 40px; text-align: center; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.feature-item { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 24px; }
.feature-item h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; color: var(--accent); }
.feature-item p { color: var(--muted); font-size: 0.9rem; }

/* Bundle Callout */
.bundle-callout { padding: 48px 0; }
.bundle-box { background: linear-gradient(135deg, rgba(16,185,129,0.08), rgba(99,102,241,0.08)); border: 1px solid var(--border); border-radius: 12px; padding: 40px; text-align: center; }
.bundle-box h3 { font-size: 1.5rem; margin-bottom: 12px; }
.bundle-box p { color: var(--muted); margin-bottom: 20px; }
.bundle-price { font-size: 2.5rem; font-weight: 800; color: var(--green); }
.bundle-price .period { font-size: 0.9rem; font-weight: 400; color: var(--muted); }
.bundle-bots { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 20px 0; }
.bundle-bot { background: rgba(99,102,241,0.1); color: var(--accent); padding: 6px 14px; border-radius: 8px; font-size: 0.85rem; font-weight: 500; }

/* ROI Calculator */
.roi-section { padding: 80px 0; border-top: 1px solid var(--border); }
.roi-section h2 { font-size: 2rem; font-weight: 700; margin-bottom: 32px; text-align: center; }
.roi-calculator { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 40px; max-width: 600px; margin: 0 auto; }
.roi-row { display: flex; justify-content: space-between; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--border); }
.roi-row:last-child { border-bottom: none; }
.roi-row .roi-label { color: var(--muted); }
.roi-row .roi-value { font-weight: 700; font-size: 1.1rem; }
.roi-row .roi-value.savings { color: var(--green); font-size: 1.5rem; }
.roi-row input[type="range"] { width: 140px; accent-color: var(--accent); }

/* Testimonial */
.testimonial { padding: 60px 0; border-top: 1px solid var(--border); }
.testimonial-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 40px; max-width: 640px; margin: 0 auto; text-align: center; }
.testimonial-card blockquote { font-size: 1.1rem; font-style: italic; color: var(--text); margin-bottom: 16px; }
.testimonial-card cite { color: var(--muted); font-size: 0.9rem; }

/* FAQ Section */
.faq-section { padding: 80px 0; }
.faq-section h2 { font-size: 2rem; font-weight: 700; margin-bottom: 32px; text-align: center; }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item summary { padding: 20px 0; cursor: pointer; font-weight: 600; font-size: 1.05rem; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::after { content: "+"; font-size: 1.4rem; color: var(--accent); transition: transform 0.2s; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { padding: 0 0 20px; color: var(--muted); line-height: 1.7; }

/* CTA */
.cta { padding: 80px 0; text-align: center; }
.cta h2 { font-size: 2rem; font-weight: 700; margin-bottom: 16px; }
.cta p { color: var(--muted); margin-bottom: 32px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-block; padding: 14px 32px; border-radius: 8px; font-weight: 600; font-size: 1rem; transition: transform 0.2s; }
.btn:hover { transform: translateY(-2px); text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }

/* Footer */
.footer { padding: 40px 0; border-top: 1px solid var(--border); text-align: center; color: var(--muted); font-size: 0.85rem; }
.footer a { color: var(--muted); }
.footer-links { display: flex; gap: 24px; justify-content: center; margin-bottom: 16px; flex-wrap: wrap; }

/* Responsive */
@media (max-width: 768px) {
  .hero { padding: 60px 0 40px; }
  .use-cases-grid, .problem-solution, .bot-showcase, .features-section, .faq-section, .cta { padding: 48px 0; }
  .ps-grid { grid-template-columns: 1fr; }
  .uc-cards { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}