/* ============ PRODUCT PAGE COMMON STYLES ============ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #1a1a2e; background: #fff; overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

:root {
  --primary: #0a66c2; --primary-dark: #084fa3; --primary-light: #e8f4fd;
  --accent: #00c9a7; --dark: #0f1629; --dark2: #1e2d4f;
  --gray: #64748b; --gray-light: #f1f5f9; --white: #fff;
  --shadow: 0 4px 24px rgba(10,102,194,0.10); --shadow-lg: 0 12px 48px rgba(10,102,194,0.16);
  --radius: 12px; --radius-lg: 20px;
  --transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* TOPBAR */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 56px; background: rgba(255,255,255,0.95); backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(10,102,194,0.08);
  display: flex; align-items: center;
}
.topbar-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  width: 100%; display: flex; align-items: center; gap: 16px;
}
.back-btn {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; color: var(--gray); padding: 6px 14px;
  border-radius: 8px; border: 1px solid rgba(0,0,0,0.1); transition: var(--transition);
  white-space: nowrap;
}
.back-btn:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
.breadcrumb { font-size: 13px; color: var(--gray); display: flex; align-items: center; gap: 6px; }
.breadcrumb a { color: var(--primary); }
.breadcrumb span { color: var(--gray); }
.topbar-logo { font-size: 16px; font-weight: 700; color: var(--primary); margin-left: auto; white-space: nowrap; }

/* PRODUCT HERO */
.prod-hero {
  padding: 100px 24px 72px;
  position: relative; overflow: hidden;
}
.prod-hero-inner { max-width: 1200px; margin: 0 auto; position: relative; z-index: 2; }
.prod-hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.prod-badge {
  display: inline-flex; align-items: center; gap: 8px;
  border-radius: 20px; padding: 5px 14px; font-size: 13px; font-weight: 600;
  margin-bottom: 18px; background: rgba(255,255,255,0.15); color: white;
  border: 1px solid rgba(255,255,255,0.25);
}
.prod-title { font-size: clamp(26px,4vw,48px); font-weight: 800; color: white; line-height: 1.2; margin-bottom: 14px; }
.prod-desc { font-size: 16px; color: rgba(255,255,255,0.8); line-height: 1.75; margin-bottom: 28px; max-width: 520px; }
.prod-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-white {
  display: inline-flex; align-items: center; gap: 8px;
  background: white; color: var(--primary);
  padding: 12px 24px; border-radius: 10px; font-size: 14px; font-weight: 600;
  transition: var(--transition); border: none; cursor: pointer; white-space: nowrap;
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
.btn-outline-white {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.1); color: white;
  padding: 12px 24px; border-radius: 10px; font-size: 14px; font-weight: 600;
  border: 1px solid rgba(255,255,255,0.25); transition: var(--transition); cursor: pointer; white-space: nowrap;
}
.btn-outline-white:hover { background: rgba(255,255,255,0.18); transform: translateY(-2px); }
.prod-stats { display: flex; gap: 28px; margin-top: 36px; flex-wrap: wrap; }
.ps { text-align: center; }
.ps .pn { font-size: 30px; font-weight: 800; color: white; }
.ps .pl { font-size: 12px; color: rgba(255,255,255,0.6); margin-top: 2px; }

/* HERO VISUAL MOCKUP */
.prod-mockup {
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15);
  border-radius: 16px; padding: 20px; backdrop-filter: blur(8px);
}
.mock-bar { display: flex; align-items: center; gap: 6px; margin-bottom: 16px; }
.mock-dot { width: 10px; height: 10px; border-radius: 50%; }
.mock-title { font-size: 12px; color: rgba(255,255,255,0.4); margin-left: 8px; }
.mock-row { display: grid; gap: 10px; margin-bottom: 12px; }
.mock-row.cols2 { grid-template-columns: 1fr 1fr; }
.mock-row.cols3 { grid-template-columns: 1fr 1fr 1fr; }
.mock-card {
  background: rgba(255,255,255,0.07); border-radius: 10px; padding: 14px;
  border: 1px solid rgba(255,255,255,0.07);
}
.mock-card .mc-l { font-size: 11px; color: rgba(255,255,255,0.4); margin-bottom: 5px; }
.mock-card .mc-v { font-size: 20px; font-weight: 700; color: white; }
.mock-card .mc-c { font-size: 11px; color: var(--accent); margin-top: 3px; }
.mock-list { display: flex; flex-direction: column; gap: 8px; }
.mock-item {
  display: flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,0.05); border-radius: 8px; padding: 9px 12px;
}
.mock-item .mi-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.mock-item .mi-t { font-size: 12px; color: rgba(255,255,255,0.65); flex: 1; }
.mock-item .mi-s {
  font-size: 10px; padding: 2px 8px; border-radius: 8px;
  background: rgba(0,201,167,0.15); color: var(--accent);
}
.mock-chart { height: 60px; background: rgba(255,255,255,0.05); border-radius: 8px; padding: 8px; display: flex; align-items: flex-end; gap: 4px; }
.mc-bar { flex: 1; border-radius: 3px 3px 0 0; background: linear-gradient(180deg, var(--accent), rgba(0,201,167,0.3)); }

/* CONTENT SECTIONS */
.prod-section { padding: 72px 0; }
.prod-section.alt { background: var(--gray-light); }
.prod-section.dark-bg { background: var(--dark); color: white; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.sec-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary-light); color: var(--primary);
  padding: 4px 12px; border-radius: 16px; font-size: 12px; font-weight: 600; margin-bottom: 12px;
}
.sec-tag.light { background: rgba(255,255,255,0.12); color: rgba(255,255,255,0.9); }
.sec-title { font-size: clamp(20px,3vw,32px); font-weight: 800; color: var(--dark); margin-bottom: 10px; line-height: 1.3; }
.sec-title.white { color: white; }
.sec-title span { background: linear-gradient(90deg,var(--primary),var(--accent)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.sec-desc { font-size: 15px; color: var(--gray); line-height: 1.75; max-width: 600px; }
.sec-desc.light { color: rgba(255,255,255,0.65); }
.sec-head { margin-bottom: 48px; }
.sec-head.center { text-align: center; }
.sec-head.center .sec-desc { margin: 0 auto; }

/* FEATURE GRID */
.feat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr)); gap: 20px; }
.feat-card {
  background: white; border-radius: var(--radius-lg); padding: 28px 22px;
  border: 1px solid rgba(0,0,0,0.06); transition: var(--transition);
}
.feat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.feat-icon { font-size: 32px; margin-bottom: 14px; }
.feat-card h4 { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.feat-card p { font-size: 13px; color: var(--gray); line-height: 1.65; }
.feat-card ul { margin-top: 10px; display: flex; flex-direction: column; gap: 5px; }
.feat-card ul li { font-size: 13px; color: var(--gray); padding-left: 14px; position: relative; line-height: 1.5; }
.feat-card ul li::before { content: '▸'; position: absolute; left: 0; color: var(--primary); font-size: 10px; top: 3px; }

/* TECH STACK */
.tech-wrap { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.tech-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: 10px;
  background: white; border: 1px solid rgba(0,0,0,0.08);
  font-size: 13px; font-weight: 600; color: var(--dark);
  transition: var(--transition);
}
.tech-badge:hover { border-color: var(--primary); color: var(--primary); box-shadow: var(--shadow); }
.tech-badge .tb-dot { width: 8px; height: 8px; border-radius: 50%; }

/* SCENARIO GRID */
.scene-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr)); gap: 16px; }
.scene-card {
  padding: 24px 20px; border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); transition: var(--transition);
}
.scene-card:hover { background: rgba(255,255,255,0.1); border-color: var(--accent); }
.scene-card .sc-icon { font-size: 28px; margin-bottom: 12px; }
.scene-card h4 { font-size: 15px; font-weight: 700; color: white; margin-bottom: 6px; }
.scene-card p { font-size: 13px; color: rgba(255,255,255,0.55); line-height: 1.6; }

/* TWO COLUMN LAYOUT */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.two-col.v-center { align-items: center; }

/* MODULE TABLE */
.module-table { width: 100%; border-collapse: collapse; margin-top: 24px; }
.module-table th {
  padding: 12px 16px; text-align: left; font-size: 13px; font-weight: 700;
  background: var(--primary); color: white; border: none;
}
.module-table th:first-child { border-radius: 10px 0 0 0; }
.module-table th:last-child { border-radius: 0 10px 0 0; }
.module-table td {
  padding: 11px 16px; font-size: 13px; color: var(--dark);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.module-table tr:hover td { background: var(--primary-light); }
.module-table tr:last-child td:first-child { border-radius: 0 0 0 10px; }
.module-table tr:last-child td:last-child { border-radius: 0 0 10px 0; }
.status-done { color: #10b981; font-weight: 600; }
.status-partial { color: #f59e0b; font-weight: 600; }

/* CTA SECTION */
.prod-cta {
  padding: 72px 0; background: linear-gradient(135deg, var(--primary), #0a3d8a);
  text-align: center;
}
.prod-cta h2 { font-size: clamp(22px,3vw,36px); font-weight: 800; color: white; margin-bottom: 12px; }
.prod-cta p { font-size: 16px; color: rgba(255,255,255,0.75); margin-bottom: 32px; max-width: 500px; margin-left: auto; margin-right: auto; }
.prod-cta .cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* FOOTER */
.prod-footer { background: #070d1a; color: rgba(255,255,255,0.4); padding: 24px 0; font-size: 13px; }
.prod-footer-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px;
}
.prod-footer a { color: rgba(255,255,255,0.4); transition: color 0.2s; }
.prod-footer a:hover { color: var(--accent); }

/* FADE IN */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in-l { opacity: 0; transform: translateX(-24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in-l.visible { opacity: 1; transform: translateX(0); }
.fade-in-r { opacity: 0; transform: translateX(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in-r.visible { opacity: 1; transform: translateX(0); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .prod-hero-grid { grid-template-columns: 1fr; }
  .prod-mockup-wrap { display: none; }
  .two-col { grid-template-columns: 1fr; gap: 32px; }
  .feat-grid { grid-template-columns: 1fr 1fr; }
  .scene-grid { grid-template-columns: 1fr 1fr; }
  .module-table { font-size: 12px; }
  .prod-stats { gap: 16px; }
  .topbar-logo { display: none; }
}
@media (max-width: 480px) {
  .feat-grid { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: 1fr; }
  .prod-hero { padding: 80px 20px 56px; }
  .prod-cta .cta-btns { flex-direction: column; align-items: center; }
}

/* COMMON JS INIT */