/* ═══════════════════════════════════════════
   ChanceMatrix AI — Official Website (Marketing)
   Dark Theme · Teal Accent · Responsive
   ═══════════════════════════════════════════ */

/* ── CSS Variables ── */
:root {
  --bg-primary: #0A162C;
  --bg-secondary: #0D2547;
  --bg-tertiary: #0F1F38;
  --bg-card: rgba(13, 37, 71, 0.7);
  --accent: #00D4AA;
  --accent-dim: rgba(0, 212, 170, 0.12);
  --text-primary: #FFFFFF;
  --text-secondary: #CCD0D6;
  --text-muted: #6B7280;
  --highlight: #FF6B35;
  --blue: #3B82F6;
  --green: #10B981;
  --yellow: #F59E0B;
  --purple: #8B5CF6;
  --pink: #EC4899;
  --font: 'Noto Sans SC', 'Microsoft YaHei', -apple-system, sans-serif;
  --max-width: 1200px;
  --nav-height: 64px;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--text-primary); }
img { max-width: 100%; height: auto; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
section { padding: 100px 0; position: relative; }

/* ── Section Header ── */
.section-header { margin-bottom: 60px; position: relative; }
.section-number {
  display: inline-block; font-size: 0.875rem; font-weight: 700;
  color: var(--accent); letter-spacing: 2px; margin-bottom: 12px;
  padding: 4px 12px; border: 1px solid rgba(0,212,170,0.3); border-radius: 4px;
}
.section-header h2 { font-size: 2.5rem; font-weight: 900; color: var(--text-primary); margin-bottom: 8px; display: inline-block; }
.section-header h2::after { content:''; display:block; width:60px; height:4px; background:var(--accent); margin-top:12px; border-radius:2px; }
.section-subtitle { font-size: 1.1rem; color: var(--text-secondary); margin-top: 16px; }
.sub-heading { font-size: 1.3rem; font-weight: 700; color: var(--accent); margin: 48px 0 24px; padding-left: 16px; border-left: 3px solid var(--accent); }

/* ── Scroll Animation ── */
.animate { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.animate.visible { opacity: 1; transform: translateY(0); }

/* ═══════════════ Navigation ═══════════════ */
#navbar {
  position: fixed; top:0; left:0; right:0; z-index:1000; height:var(--nav-height);
  background: rgba(10,22,44,0.92); backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.06); transition: background var(--transition);
}
.nav-container { max-width:var(--max-width); margin:0 auto; padding:0 24px; display:flex; align-items:center; justify-content:space-between; height:100%; }
.nav-logo { font-size:1.3rem; font-weight:900; color:var(--text-primary); letter-spacing:0.5px; }
.nav-logo .accent { color:var(--accent); }
.nav-links { display:flex; list-style:none; gap:4px; align-items:center; }
.nav-links a { color:var(--text-secondary); font-size:0.85rem; font-weight:500; padding:8px 12px; border-radius:6px; transition:all var(--transition); white-space:nowrap; }
.nav-links a:hover, .nav-links a.active { color:var(--accent); background:var(--accent-dim); }
.nav-cta { background:var(--accent)!important; color:var(--bg-primary)!important; font-weight:700!important; }
.nav-cta:hover { background:#00e6b8!important; color:var(--bg-primary)!important; }
.nav-toggle { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:4px; }
.nav-toggle span { display:block; width:24px; height:2px; background:var(--text-primary); border-radius:2px; transition:var(--transition); }

/* ═══════════════ Section: Hero ═══════════════ */
#hero {
  min-height: 100vh; display:flex; align-items:center; justify-content:center;
  text-align:center; padding:0 24px; position:relative; overflow:hidden;
}
.hero-bg {
  position:absolute; inset:0;
  background: radial-gradient(ellipse at 20% 50%, rgba(0,212,170,0.08) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 20%, rgba(59,130,246,0.06) 0%, transparent 50%),
              radial-gradient(ellipse at 50% 80%, rgba(0,212,170,0.04) 0%, transparent 50%);
  z-index:0;
}
.hero-content { position:relative; z-index:1; max-width:860px; }
.hero-badge { display:inline-block; font-size:0.8rem; font-weight:500; color:var(--accent); padding:6px 16px; border:1px solid rgba(0,212,170,0.3); border-radius:20px; margin-bottom:32px; letter-spacing:1px; }
.hero-title { margin-bottom:24px; }
.hero-title-main { display:block; font-size:4rem; font-weight:900; color:var(--text-primary); letter-spacing:-1px; line-height:1.1; }
.hero-title-sub { display:block; font-size:1.75rem; font-weight:400; color:var(--text-secondary); margin-top:12px; }
.hero-divider { width:80px; height:4px; background:var(--accent); margin:28px auto; border-radius:2px; }
.hero-tagline { font-size:1.2rem; color:var(--text-secondary); line-height:1.9; margin-bottom:36px; }
.hero-tagline strong { color:var(--accent); }

.hero-stats-row { display:flex; justify-content:center; gap:48px; margin-top:40px; flex-wrap:wrap; }
.hero-stat { text-align:center; }
.hero-stat-num { display:block; font-size:1.8rem; font-weight:900; color:var(--accent); line-height:1.1; }
.hero-stat-label { display:block; font-size:0.8rem; color:var(--text-muted); margin-top:4px; }

.hero-cta { display:flex; gap:16px; justify-content:center; flex-wrap:wrap; margin-bottom:16px; }
.btn-primary, .btn-outline { display:inline-block; padding:14px 36px; border-radius:50px; font-size:1rem; font-weight:700; cursor:pointer; transition:all var(--transition); letter-spacing:0.5px; }
.btn-primary { background:var(--accent); color:var(--bg-primary); border:2px solid var(--accent); }
.btn-primary:hover { background:#00e6b8; transform:translateY(-2px); box-shadow:0 8px 30px rgba(0,212,170,0.3); }
.btn-outline { background:transparent; color:var(--text-primary); border:2px solid rgba(255,255,255,0.25); }
.btn-outline:hover { border-color:var(--accent); color:var(--accent); transform:translateY(-2px); }
.hero-meta { font-size:0.9rem; color:var(--text-muted); }
.hero-scroll { position:absolute; bottom:40px; left:50%; transform:translateX(-50%); display:flex; flex-direction:column; align-items:center; gap:8px; color:var(--text-muted); font-size:0.8rem; z-index:1; }
.scroll-indicator { width:20px; height:36px; border:2px solid var(--text-muted); border-radius:10px; position:relative; }
.scroll-indicator::after { content:''; position:absolute; top:6px; left:50%; transform:translateX(-50%); width:4px; height:8px; background:var(--accent); border-radius:2px; animation:scroll-bounce 2s infinite; }
@keyframes scroll-bounce { 0%,100%{transform:translateX(-50%) translateY(0);opacity:1} 50%{transform:translateX(-50%) translateY(8px);opacity:.3} }

/* ═══════════════ Section: Vision ═══════════════ */
#vision { background: linear-gradient(180deg, var(--bg-primary) 0%, #0B1B36 100%); }
.vision-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.vision-card { background:var(--bg-card); border:1px solid rgba(255,255,255,0.06); border-radius:var(--radius); padding:36px; transition:transform var(--transition), border-color var(--transition); }
.vision-card:hover { transform:translateY(-4px); border-color:rgba(0,212,170,0.25); }
.vision-icon { font-size:2rem; margin-bottom:16px; }
.vision-card h3 { font-size:1.2rem; color:var(--accent); margin-bottom:12px; font-weight:700; }
.vision-card p, .vision-card ul { color:var(--text-secondary); font-size:0.95rem; line-height:1.8; }
.vision-card ul { list-style:none; padding:0; }
.vision-card li { padding:4px 0 4px 20px; position:relative; }
.vision-card li::before { content:'→'; position:absolute; left:0; color:var(--accent); }

/* ═══════════════ Section: Market ═══════════════ */
.market-intro { font-size:1.05rem; color:var(--text-secondary); line-height:1.9; margin-bottom:32px; max-width:900px; }
.market-intro strong { color:var(--accent); }

/* Chart wrapper */
.chart-wrapper {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 32px;
  overflow-x: auto;
}
.market-chart { width:100%; min-width:700px; }

/* Market Insight Box */
.market-insight-box {
  background: var(--accent-dim);
  border: 1px solid rgba(0,212,170,0.2);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 40px;
}
.market-insight-box h4 { font-size:1.15rem; color:var(--accent); margin-bottom:20px; }
.insight-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.insight-item { text-align:center; }
.insight-num { display:block; font-size:1.8rem; font-weight:900; color:var(--accent); margin-bottom:4px; }
.insight-item p { font-size:0.85rem; color:var(--text-secondary); line-height:1.5; }

/* Pain Points */
.pain-list { display:flex; flex-direction:column; gap:16px; margin-bottom:40px; }
.pain-item { background:var(--bg-card); border-left:4px solid var(--highlight); padding:20px 24px; border-radius:0 var(--radius) var(--radius) 0; font-size:1.05rem; color:var(--text-secondary); line-height:1.7; }
.pain-item strong { color:var(--text-primary); font-size:1.1rem; }
.pain-num { display:inline-block; color:var(--highlight); font-weight:900; font-size:1.2rem; margin-right:12px; min-width:28px; }

/* ═══════════════ Section: Solution (Four Pillars) ═══════════════ */
#solution { background: linear-gradient(180deg, #0B1B36 0%, var(--bg-primary) 100%); }
.pillars-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.pillar-card { background:var(--bg-card); border:1px solid rgba(255,255,255,0.06); border-top:3px solid var(--accent); border-radius:var(--radius); padding:32px 24px; text-align:center; transition:transform var(--transition), box-shadow var(--transition); }
.pillar-card:hover { transform:translateY(-6px); box-shadow:0 16px 40px rgba(0,0,0,0.4); }
.pillar-icon { font-size:2.5rem; margin-bottom:16px; }
.pillar-card h3 { font-size:1.1rem; font-weight:700; color:var(--accent); margin-bottom:8px; }
.pillar-desc { font-size:0.9rem; color:var(--text-primary); margin-bottom:12px; }
.pillar-benefit { font-size:0.82rem; color:var(--accent); line-height:1.5; }
.pillar-tech { font-size:0.8rem; color:var(--text-muted); line-height:1.5; }

/* ═══════════════ Section: Product Outcomes ═══════════════ */
#outcomes { background: linear-gradient(180deg, var(--bg-primary) 0%, #0B1B36 100%); }

/* Outcome Metrics */
.outcome-metrics { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-bottom:24px; }
.metric-card { background:var(--bg-card); border:1px solid rgba(255,255,255,0.06); border-radius:var(--radius); padding:28px 24px; text-align:center; transition:transform var(--transition), border-color var(--transition); }
.metric-card:hover { transform:translateY(-3px); border-color:rgba(0,212,170,0.25); }
.metric-value { font-size:2.5rem; font-weight:900; color:var(--accent); line-height:1.1; margin-bottom:8px; }
.metric-unit { font-size:1rem; font-weight:400; color:var(--text-secondary); }
.metric-label { font-size:0.95rem; font-weight:600; color:var(--text-primary); margin-bottom:6px; }
.metric-desc { font-size:0.8rem; color:var(--text-muted); line-height:1.5; }

/* Category Cards */
.category-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-bottom:24px; }
.category-card { background:var(--bg-card); border:1px solid rgba(255,255,255,0.06); border-radius:var(--radius); padding:28px; text-align:center; transition:transform var(--transition); }
.category-card:hover { transform:translateY(-3px); }
.category-icon { font-size:2.5rem; margin-bottom:12px; }
.category-card h4 { font-size:1.1rem; font-weight:700; color:var(--text-primary); margin-bottom:8px; }
.category-card p { font-size:0.88rem; color:var(--text-secondary); line-height:1.6; margin-bottom:12px; }

/* ═══════════════ Benefit Blocks (Cloud, Gateway, SDK) ═══════════════ */
#cloud, #gateway, #sdk { background: linear-gradient(180deg, #0B1B36 0%, var(--bg-primary) 100%); }
#sdk, #moat { background: linear-gradient(180deg, var(--bg-primary) 0%, #0B1B36 100%); }

.benefit-blocks { display:flex; flex-direction:column; gap:24px; }
.benefit-block { display:flex; gap:24px; align-items:flex-start; background:var(--bg-card); border:1px solid rgba(255,255,255,0.06); border-radius:var(--radius); padding:32px; transition:border-color var(--transition), transform var(--transition); }
.benefit-block:hover { border-color:rgba(0,212,170,0.2); transform:translateX(4px); }
.benefit-icon { font-size:2.2rem; flex-shrink:0; width:56px; height:56px; display:flex; align-items:center; justify-content:center; background:var(--accent-dim); border-radius:14px; }
.benefit-text { flex:1; }
.benefit-text h4 { font-size:1.15rem; font-weight:700; color:var(--text-primary); margin-bottom:8px; }
.benefit-text p { font-size:0.95rem; color:var(--text-secondary); line-height:1.8; }
.benefit-text code { background:rgba(0,212,170,0.12); color:var(--accent); padding:2px 8px; border-radius:4px; font-family:'SF Mono','Fira Code','Consolas',monospace; font-size:0.9em; }

/* API Tags */
.api-tags { display:flex; flex-wrap:wrap; gap:8px; margin-top:12px; }
.api-tags code { background:rgba(0,212,170,0.1); color:var(--accent); padding:6px 14px; border-radius:20px; font-size:0.82rem; font-family:'SF Mono','Fira Code','Consolas',monospace; border:1px solid rgba(0,212,170,0.2); }

/* ═══════════════ Tables (for any remaining) ═══════════════ */
.table-wrapper { overflow-x:auto; margin-bottom:32px; border-radius:var(--radius); border:1px solid rgba(255,255,255,0.06); }
.data-table { width:100%; border-collapse:collapse; background:var(--bg-card); font-size:0.9rem; }
.data-table thead th { background:var(--bg-secondary); color:var(--text-primary); font-weight:700; padding:14px 18px; text-align:left; white-space:nowrap; border-bottom:2px solid rgba(0,212,170,0.3); }
.data-table tbody td { padding:12px 18px; border-bottom:1px solid rgba(255,255,255,0.04); color:var(--text-secondary); }
.data-table tbody tr:nth-child(even) { background:rgba(15,31,56,0.5); }
.data-table tbody tr:nth-child(odd) { background:rgba(10,22,44,0.3); }

/* Badges */
.badge { display:inline-block; padding:3px 10px; border-radius:12px; font-size:0.78rem; font-weight:600; white-space:nowrap; }
.badge-p0 { background:rgba(255,107,53,0.15); color:var(--highlight); }
.badge-p1 { background:rgba(59,130,246,0.15); color:var(--blue); }
.badge-p2 { background:rgba(107,114,128,0.15); color:var(--text-muted); }

/* ═══════════════ Section: Moat ═══════════════ */
.moat-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:16px; }
.moat-item { display:flex; gap:16px; align-items:flex-start; background:var(--bg-card); border:1px solid rgba(255,255,255,0.06); border-radius:var(--radius); padding:24px; transition:border-color var(--transition); }
.moat-item:hover { border-color:rgba(0,212,170,0.25); }
.moat-num { font-size:1.5rem; font-weight:900; color:var(--accent); flex-shrink:0; line-height:1; }
.moat-item strong { display:block; font-size:0.95rem; color:var(--text-primary); margin-bottom:4px; }
.moat-item p { font-size:0.85rem; color:var(--text-secondary); }

/* ═══════════════ Section: Contact ═══════════════ */
#contact { background: linear-gradient(180deg, #0B1B36 0%, var(--bg-primary) 100%); text-align:center; }
.contact-content h2 { font-size:2.8rem; font-weight:900; color:var(--text-primary); margin-bottom:16px; }
.contact-divider { width:60px; height:4px; background:var(--accent); margin:24px auto; border-radius:2px; }
.contact-tagline { font-size:1.25rem; color:var(--text-secondary); margin-bottom:8px; }
.contact-desc { font-size:1.05rem; color:var(--accent); margin-bottom:48px; }
.contact-cards { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-bottom:48px; text-align:left; }
.contact-card { background:var(--bg-card); border:1px solid rgba(255,255,255,0.06); border-radius:var(--radius); padding:28px; transition:transform var(--transition); }
.contact-card:hover { transform:translateY(-3px); }
.contact-card h4 { font-size:1.05rem; font-weight:700; color:var(--accent); margin-bottom:8px; }
.contact-card p { font-size:0.9rem; color:var(--text-secondary); line-height:1.7; }
.contact-cta-box { background:var(--accent-dim); border:1px solid rgba(0,212,170,0.2); border-radius:var(--radius); padding:40px; }
.contact-cta-box h3 { font-size:1.3rem; color:var(--accent); margin-bottom:12px; }
.contact-cta-box p { font-size:1rem; color:var(--text-secondary); margin-bottom:16px; line-height:1.7; }
.contact-cta-box .btn-primary { margin-top:8px; }

/* ═══════════════ Footer ═══════════════ */
footer { border-top:1px solid rgba(255,255,255,0.06); padding:48px 0 24px; }
.footer-content { display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:32px; margin-bottom:32px; }
.footer-brand p { font-size:0.85rem; color:var(--text-muted); margin-top:8px; }
.footer-links { display:flex; flex-wrap:wrap; gap:20px; }
.footer-links a { font-size:0.85rem; color:var(--text-secondary); }
.footer-links a:hover { color:var(--accent); }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.06); padding-top:20px; text-align:center; }
.footer-bottom p { font-size:0.8rem; color:var(--text-muted); }

/* ═══════════════ Back to Top ═══════════════ */
#backToTop { position:fixed; bottom:32px; right:32px; width:44px; height:44px; background:var(--accent); color:var(--bg-primary); border:none; border-radius:50%; font-size:1.2rem; font-weight:700; cursor:pointer; opacity:0; visibility:hidden; transition:all var(--transition); z-index:999; box-shadow:0 4px 16px rgba(0,212,170,0.3); }
#backToTop.visible { opacity:1; visibility:visible; }
#backToTop:hover { transform:translateY(-3px); box-shadow:0 8px 24px rgba(0,212,170,0.4); }

/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */

@media (max-width: 1024px) {
  section { padding:70px 0; }
  .hero-title-main { font-size:2.8rem; }
  .hero-title-sub { font-size:1.3rem; }
  .hero-stats-row { gap:28px; }
  .vision-grid { grid-template-columns:1fr; }
  .pillars-grid { grid-template-columns:repeat(2,1fr); }
  .outcome-metrics { grid-template-columns:repeat(2,1fr); }
  .category-grid { grid-template-columns:repeat(2,1fr); }
  .moat-grid { grid-template-columns:1fr; }
  .insight-grid { grid-template-columns:repeat(2,1fr); }
  .contact-cards { grid-template-columns:1fr; }
}

@media (max-width: 768px) {
  section { padding:56px 0; }
  .section-header h2 { font-size:1.8rem; }
  .section-subtitle { font-size:0.95rem; }

  .nav-links { display:none; position:fixed; top:var(--nav-height); left:0; right:0; background:var(--bg-primary); border-bottom:1px solid rgba(255,255,255,0.08); flex-direction:column; padding:16px; max-height:80vh; overflow-y:auto; }
  .nav-links.open { display:flex; }
  .nav-toggle { display:flex; }

  .hero-title-main { font-size:2rem; }
  .hero-title-sub { font-size:1rem; }
  .hero-tagline { font-size:0.95rem; }
  .hero-cta { flex-direction:column; align-items:center; }
  .hero-stats-row { gap:20px; }
  .hero-stat-num { font-size:1.4rem; }

  .vision-grid, .pillars-grid, .outcome-metrics, .category-grid, .moat-grid, .insight-grid, .contact-cards { grid-template-columns:1fr; }
  .pain-grid { grid-template-columns:1fr; }
  .benefit-block { flex-direction:column; align-items:flex-start; }
  .benefit-icon { width:44px; height:44px; font-size:1.6rem; }
  .contact-content h2 { font-size:2rem; }
  .contact-tagline { font-size:1.05rem; }

  .chart-wrapper { padding:12px; }
  .footer-content { flex-direction:column; }
}