:root {
      --pi-primary: #EF4444; --pi-primary-rgb: 239,68,68;
      --pi-accent: #F97316; --pi-accent-rgb: 249,115,22;
      --pi-bg: #0C080A; --pi-surface: rgba(18,10,12,.92);
      --pi-border: rgba(239,68,68,.18);
      --pi-text: #F4D8DC; --pi-text2: #A87074; --pi-text3: #68383C;
      --pi-grad: linear-gradient(135deg, #EF4444 0%, #F97316 50%, #F43F5E 100%);
      --pi-glow: 0 0 40px rgba(239,68,68,.2), 0 0 80px rgba(239,68,68,.06);
    }
    * { box-sizing: border-box; }
    body { margin: 0; background: var(--pi-bg); color: var(--pi-text); font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; -webkit-font-smoothing: antialiased; }
    .pi-wrap { max-width: 1340px; margin: 0 auto; padding: 0 24px 80px; position: relative; z-index: 1; }

    .pi-hero { text-align: center; padding: 48px 0 24px; position: relative; }
    .pi-hero::before { content: ''; position: absolute; top: -120px; left: 50%; transform: translateX(-50%); width: 600px; height: 600px; background: radial-gradient(circle, rgba(239,68,68,.10) 0%, transparent 70%); pointer-events: none; }
    .pi-hero-badge { display: inline-block; padding: 6px 16px; border-radius: 20px; background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.25); font-size: .76rem; color: #EF4444; margin-bottom: 16px; letter-spacing: .04em; }
    .pi-hero h1 { font-size: 3rem; font-weight: 900; margin: 0 0 12px; line-height: 1.15; }
    .pi-hero h1 .hl { background: var(--pi-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .pi-hero p { font-size: .95rem; color: var(--pi-text2); max-width: 700px; margin: 0 auto 28px; line-height: 1.7; }

    .pi-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }
    .pi-stat { background: var(--pi-surface); border: 1px solid var(--pi-border); border-radius: 18px; padding: 24px; text-align: center; backdrop-filter: blur(20px); transition: .3s; }
    .pi-stat:hover { border-color: rgba(239,68,68,.35); box-shadow: 0 0 30px rgba(239,68,68,.06); transform: translateY(-2px); }
    .pi-stat-val { font-size: 2.2rem; font-weight: 900; background: linear-gradient(135deg, #EF4444, #F97316); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .pi-stat-lbl { font-size: .7rem; color: var(--pi-text3); margin-top: 6px; letter-spacing: .03em; text-transform: uppercase; }

    .pi-sec { margin: 40px 0; }
    .pi-sec-header { text-align: center; margin-bottom: 24px; }
    .pi-sec-header h2 { font-size: 1.8rem; font-weight: 800; margin: 0 0 10px; }
    .pi-sec-header h2 .hl { background: var(--pi-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .pi-sec-header .sub { font-size: .82rem; color: var(--pi-text3); }

    .pi-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .pi-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .pi-card { background: var(--pi-surface); border: 1px solid var(--pi-border); border-radius: 18px; padding: 26px; backdrop-filter: blur(20px); transition: .35s; position: relative; overflow: hidden; }
    .pi-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, #EF4444, #F97316); opacity: 0; transition: .35s; }
    .pi-card:hover::before { opacity: 1; }
    .pi-card:hover { border-color: rgba(239,68,68,.4); box-shadow: var(--pi-glow); transform: translateY(-3px); }
    .pi-card .icon { font-size: 2rem; margin-bottom: 14px; display: block; }
    .pi-card h4 { font-size: 1rem; font-weight: 700; margin: 0 0 8px; color: #fff; }
    .pi-card p { font-size: .78rem; color: var(--pi-text2); line-height: 1.65; margin: 0; }

    .pi-code-block { background: #060308; border: 1px solid rgba(239,68,68,.2); border-radius: 14px; padding: 18px 22px; font-family: 'SF Mono', 'Fira Code', monospace; font-size: .72rem; line-height: 1.8; color: #D09090; overflow-x: auto; margin-bottom: 12px; }
    .pi-code-block .cmt { color: #68383C; }
    .pi-code-block .kw { color: #EF4444; }
    .pi-code-block .fn { color: #F97316; }
    .pi-code-block .str { color: #A87074; }

    .pi-det-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .pi-det-card { padding: 20px; border-radius: 14px; text-align: center; transition: .3s; }
    .pi-det-card:nth-child(1) { background: rgba(239,68,68,.08); border: 1px solid rgba(239,68,68,.2); }
    .pi-det-card:nth-child(2) { background: rgba(249,115,22,.08); border: 1px solid rgba(249,115,22,.2); }
    .pi-det-card:nth-child(3) { background: rgba(59,130,246,.08); border: 1px solid rgba(59,130,246,.2); }
    .pi-det-card:nth-child(4) { background: rgba(99,102,241,.08); border: 1px solid rgba(99,102,241,.2); }
    .pi-det-card:hover { transform: translateY(-2px); box-shadow: 0 0 20px rgba(239,68,68,.06); }
    .pi-det-card .ico { font-size: 2rem; display: block; margin-bottom: 8px; }
    .pi-det-card h5 { font-size: .82rem; font-weight: 700; color: #fff; margin: 0 0 6px; }
    .pi-det-card p { font-size: .7rem; color: var(--pi-text2); line-height: 1.5; }

    .pi-inject-list { display: flex; flex-direction: column; gap: 12px; }
    .pi-inject-item { display: flex; gap: 14px; align-items: flex-start; padding: 18px 22px; background: var(--pi-surface); border: 1px solid var(--pi-border); border-radius: 16px; transition: .3s; }
    .pi-inject-item:hover { border-color: rgba(239,68,68,.3); }
    .pi-inject-num { width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-weight: 900; font-size: .9rem; flex-shrink: 0; background: linear-gradient(135deg, #EF4444, #F97316); color: #fff; }
    .pi-inject-item h5 { font-size: .84rem; font-weight: 700; color: #fff; margin: 0 0 4px; }
    .pi-inject-item p { font-size: .72rem; color: var(--pi-text2); margin: 0; line-height: 1.6; }

    .cta-band { text-align: center; margin-top: 48px; padding: 40px; background: linear-gradient(135deg, rgba(239,68,68,.06), rgba(249,115,22,.06)); border: 1px solid var(--pi-border); border-radius: 24px; }
    .cta-band h3 { font-size: 1.5rem; font-weight: 800; margin: 0 0 10px; }
    .cta-band p { font-size: .82rem; color: var(--pi-text2); margin: 0 0 20px; }
    .btn-primary { display: inline-block; padding: 12px 32px; border-radius: 12px; font-size: .84rem; font-weight: 700; text-decoration: none; color: #fff; background: linear-gradient(135deg, #EF4444, #F97316); box-shadow: 0 4px 24px rgba(239,68,68,.35); transition: .3s; }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 36px rgba(239,68,68,.5); }
    .btn-outline { display: inline-block; padding: 12px 28px; border-radius: 12px; font-size: .84rem; font-weight: 600; text-decoration: none; color: #EF4444; border: 1px solid rgba(239,68,68,.3); transition: .3s; margin-left: 12px; }
    .btn-outline:hover { background: rgba(239,68,68,.08); border-color: rgba(239,68,68,.5); }

    @media (max-width: 1024px) { .pi-stats, .pi-det-grid { grid-template-columns: 1fr 1fr; } .pi-grid-2, .pi-grid-3 { grid-template-columns: 1fr; } .pi-hero h1 { font-size: 2rem; } }
    @media (max-width: 640px) { .pi-stats { grid-template-columns: 1fr; } .pi-hero h1 { font-size: 1.6rem; } }