*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
  :root{
    --bg:#191127;--surface:#2a1647;--card:#23133a;--card-hover:#1f1232;
    --accent:#883CF0;--accent2:#a855f7;--accent3:#7c3aed;--accent4:#af62c8;
    --text:#e8e8f0;--text-muted:#d6d6d6;--text-dim:#d6d6d6;
    --radius:16px;--glow:0 0 40px rgba(165, 59, 246, 0.15);
  }
  html{scroll-behavior:smooth;font-size:16px}
  body{font-family:'Sora',sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden;line-height:1.6}

  /* Grain overlay */
  body::after{content:'';position:fixed;inset:0;pointer-events:none;z-index:9999;
    background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
    opacity:.5}

  /* Scrollbar */
  ::-webkit-scrollbar{width:6px}
  ::-webkit-scrollbar-track{background:var(--bg)}
  ::-webkit-scrollbar-thumb{background:var(--accent);border-radius:3px}

  /* HERO */
  .hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:2rem;position:relative;overflow:hidden}
  .hero-orbs{position:absolute;inset:0;pointer-events:none}
  .orb{position:absolute;border-radius:50%;filter:blur(80px);animation:float 8s ease-in-out infinite}
  .orb-1{width:400px;height:400px;background:rgba(184, 59, 246, 0.15);top:-10%;left:-5%;animation-delay:0s}
  .orb-2{width:350px;height:350px;background:rgba(168,85,247,.12);bottom:-5%;right:-5%;animation-delay:-3s}
  .orb-3{width:250px;height:250px;background:rgba(123, 6, 212, 0.1);top:40%;right:20%;animation-delay:-5s}
  @keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(30px,-20px) scale(1.1)}}

  .hero-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.4rem 1rem;border:1px solid #3a1c63;border-radius:999px;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:2rem;backdrop-filter:blur(10px);background:#1f1232;animation:fadeUp .8s ease both}
  .hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);animation:pulse 2s infinite}
  @keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}

  .hero h1{font-family:'Fraunces',serif;font-size:clamp(3rem,8vw,7rem);font-weight:800;line-height:1;letter-spacing:-.03em;margin-bottom:1.5rem;animation:fadeUp .8s .15s ease both}
  .hero h1 .gradient{background:linear-gradient(135deg,var(--accent),var(--accent2),var(--accent3));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
  .hero p{font-size:clamp(1rem,2vw,1.25rem);color:var(--text-muted);max-width:560px;margin-bottom:2.5rem;font-weight:300;animation:fadeUp .8s .3s ease both}

  @keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}

  .hero-cta{display:flex;gap:1rem;flex-wrap:wrap;justify-content:center;animation:fadeUp .8s .45s ease both}
  .btn{padding:.85rem 2rem;border-radius:999px;font-family:inherit;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .3s;border:none;text-decoration:none;display:inline-flex;align-items:center;gap:.5rem}
  .btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 4px 24px rgba(159, 59, 246, 0.3)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(159,59,246,.4)}
  .btn-secondary{background:#1f123251;color:var(--text);border:1px solid #3a1c63}
  .btn-secondary:hover{background:#1f1232;transform:translateY(-2px)}

  .scroll-hint{position:absolute;bottom:2rem;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:.5rem;color:var(--text-dim);font-size:.7rem;letter-spacing:.15em;text-transform:uppercase;animation:fadeUp 1s 1s ease both}
  .scroll-hint span{width:1px;height:32px;background:linear-gradient(to bottom,var(--accent),transparent);animation:scrollLine 2s infinite}
  @keyframes scrollLine{0%{opacity:1;transform:scaleY(1)}100%{opacity:0;transform:scaleY(0);transform-origin:bottom}}

  /* FILTER BAR */
  .filter-section{padding:1rem 2rem;position:sticky;top:0;z-index:100;background:#1f1232;backdrop-filter:blur(20px);border-bottom:1px solid #3a1c63}
  .filter-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:1rem;overflow-x:auto;padding:.5rem 0;scrollbar-width:none}
  .filter-inner::-webkit-scrollbar{display:none}
  .filter-btn{padding:.5rem 1.2rem;border-radius:999px;border:1px solid #3a1c63;background:transparent;color:var(--text-muted);font-family:inherit;font-size:.8rem;font-weight:500;cursor:pointer;transition:all .25s;white-space:nowrap}
  .filter-btn:hover{border-color:#5e309d;color:var(--text)}
  .filter-btn.active{background:linear-gradient(135deg,var(--accent),var(--accent2));border-color:transparent;color:#fff;box-shadow:0 2px 16px rgba(159, 59, 246, 0.25)}
  .search-wrap{position:relative;margin-left:auto;flex-shrink:0}
  .search-wrap input{padding:.5rem 1rem .5rem 2.5rem;border-radius:999px;border:1px solid #3a1c63;background:rgba(255,255,255,.04);color:var(--text);font-family:inherit;font-size:.8rem;width:220px;outline:none;transition:all .3s}
  .search-wrap input:focus{border-color:var(--accent);width:280px;background:rgba(162, 59, 246, 0.05)}
  .search-wrap input::placeholder{color:var(--text-dim)}
  .search-wrap svg{position:absolute;left:.8rem;top:50%;transform:translateY(-50%);width:14px;height:14px;stroke:var(--text-dim)}

  /* TIP CARDS GRID */
  .tips-section{max-width:1200px;margin:0 auto;padding:3rem 2rem 6rem}
  .section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}
  .section-header h2{font-family:'Fraunces',serif;font-size:1.8rem;font-weight:600}
  .tip-count{color:var(--text-dim);font-size:.85rem}

  .tips-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:1.5rem}

  .tip-card{background:var(--card);border-radius:var(--radius);border:1px solid #3a1c63;padding:0;overflow:hidden;cursor:pointer;transition:all .4s cubic-bezier(.23,1,.32,1);position:relative}
  .tip-card:hover{transform:translateY(-4px);border-color:#5e309d;box-shadow:var(--glow);background:var(--card-hover)}
  .tip-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent2));opacity:0;transition:opacity .3s}
  .tip-card:hover::before{opacity:1}

  .card-header{padding:1.5rem 1.5rem 0;display:flex;justify-content:space-between;align-items:flex-start}
  .card-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0}
  .card-icon.windows{background:linear-gradient(135deg,rgba(162, 59, 246, 0.15),rgba(162, 59, 246, 0.05))}
  .card-icon.office{background:linear-gradient(135deg,rgba(245,158,11,.15),rgba(245,158,11,.05))}
  .card-icon.security{background:linear-gradient(135deg,rgba(239,68,68,.15),rgba(239,68,68,.05))}
  .card-icon.productivity{background:linear-gradient(135deg,rgba(168,85,247,.15),rgba(168,85,247,.05))}
  .card-icon.copilot{background:linear-gradient(135deg,rgba(6,182,212,.15),rgba(6,182,212,.05))}
  .card-category{font-size:.65rem;text-transform:uppercase;letter-spacing:.1em;padding:.25rem .65rem;border-radius:999px;font-weight:600}
  .cat-windows{color:var(--accent);background:rgba(156, 59, 246, 0.08)}
  .cat-office{color:var(--accent4);background:rgba(245,158,11,.08)}
  .cat-security{color:#ef4444;background:rgba(239,68,68,.08)}
  .cat-productivity{color:var(--accent2);background:rgba(168,85,247,.08)}
  .cat-copilot{color:var(--accent3);background:rgba(6,182,212,.08)}

  .card-body{padding:1rem 1.5rem 1.5rem}
  .card-body h3{font-size:1.05rem;font-weight:600;margin-bottom:.5rem;line-height:1.3}
  .card-body p{color:var(--text-muted);font-size:.85rem;line-height:1.6;font-weight:300}
  .card-footer{padding:0 1.5rem 1.5rem;display:flex;align-items:center;justify-content:space-between}
  .card-meta{display:flex;align-items:center;gap:1rem}
  .card-meta span{font-size:.7rem;color:var(--text-dim);display:flex;align-items:center;gap:.3rem}
  .card-difficulty{display:flex;gap:3px}
  .card-difficulty i{width:14px;height:3px;border-radius:2px;background:rgba(255,255,255,.08)}
  .card-difficulty i.filled{background:var(--accent)}
  .card-expand{width:28px;height:28px;border-radius:50%;border:1px solid rgba(255,255,255,.08);background:transparent;color:var(--text-dim);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s;font-size:.7rem}
  .card-expand:hover{border-color:var(--accent);color:var(--accent);background:rgba(59,130,246,.05)}

  /* EXPANDED TIP MODAL */
  .modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);backdrop-filter:blur(8px);z-index:1000;display:none;justify-content:center;align-items:center;padding:2rem;opacity:0;transition:opacity .3s}
  .modal-overlay.open{display:flex;opacity:1}
  .modal{background:var(--surface);border-radius:20px;max-width:680px;width:100%;max-height:85vh;overflow-y:auto;border:1px solid rgba(255,255,255,.06);position:relative;animation:modalIn .4s ease}
  @keyframes modalIn{from{opacity:0;transform:scale(.95) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}
  .modal-close{position:absolute;top:1.2rem;right:1.2rem;width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.1);background:rgba(0,0,0,.3);color:var(--text);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.1rem;transition:all .3s;z-index:2}
  .modal-close:hover{background:rgba(239,68,68,.2);border-color:rgba(239,68,68,.3)}
  .modal-top{padding:2rem 2rem 0;display:flex;align-items:center;gap:1rem}
  .modal-top .card-icon{width:52px;height:52px}
  .modal-title{font-family:'Fraunces',serif;font-size:1.6rem;font-weight:600;padding:1rem 2rem .5rem}
  .modal-body{padding:0 2rem 2rem}
  .modal-body p{color:var(--text-muted);font-size:.9rem;line-height:1.8;margin-bottom:1rem}
  .modal-body .steps{margin-top:1rem}
  .modal-body .step{display:flex;gap:1rem;margin-bottom:1.2rem;align-items:flex-start}
  .step-num{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;flex-shrink:0;margin-top:2px}
  .step-text{font-size:.88rem;color:var(--text);line-height:1.6}
  .step-text code{background:#1f1232;color:var(--accent);padding:.15rem .45rem;border-radius:6px;font-size:.8rem;font-family:'Sora',monospace}
  .modal-tags{padding:0 2rem 1.5rem;display:flex;flex-wrap:wrap;gap:.5rem}
  .tag{font-size:.7rem;padding:.3rem .7rem;border-radius:999px;background:rgba(255,255,255,.04);color:var(--text-dim);border:1px solid rgba(255,255,255,.06)}
  .modal-actions{padding:0 2rem 2rem;display:flex;gap:.75rem}
  .modal-actions .btn{font-size:.8rem;padding:.6rem 1.4rem}

  /* STATS BAR */
  .stats-bar{max-width:1200px;margin:0 auto 3rem;padding:0 2rem}
  .stats-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.04);border-radius:var(--radius);overflow:hidden}
  .stat{background:var(--surface);padding:2rem;text-align:center}
  .stat-num{font-family:'Fraunces',serif;font-size:2.5rem;font-weight:800;background:linear-gradient(135deg,var(--accent),var(--accent3));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
  .stat-label{font-size:.75rem;color:var(--text-dim);text-transform:uppercase;letter-spacing:.1em;margin-top:.25rem}

  /* FOOTER */
  footer{border-top:1px solid #3a1c63;padding:3rem 2rem;text-align:center}
  footer p{color:var(--text-dim);font-size:.8rem}
  footer a{color:var(--accent);text-decoration:none}
  footer a:hover{text-decoration:underline}

  /* RESPONSIVENESS */
  @media(max-width:768px){
    .tips-grid{grid-template-columns:1fr}
    .stats-inner{grid-template-columns:repeat(2,1fr)}
    .filter-inner{gap:.5rem}
    .search-wrap input{width:160px}
    .search-wrap input:focus{width:200px}
    .hero h1{font-size:2.5rem}
  }

  /* hide class */
  .hidden{display:none!important}

  /* Card entrance animation */
  .tip-card{opacity:0;animation:cardIn .5s ease forwards}
  @keyframes cardIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}