:root {
    --bg: #ffffff;
    --surface: #f7f8fc;
    --card: #ffffff;
    --border: #e8eaf2;
    --border2: #d1d5e8;
    --accent: #2563eb;
    --accent-soft: #eff4ff;
    --accent2: #7c3aed;
    --text: #0f172a;
    --sub: #475569;
    --muted: #94a3b8;
    --fb: #1877f2;
    --ig: #e1306c;
    --tk: #333333;
    --sh: #ee4d2d;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.1);
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body { background: var(--bg); color: var(--text); font-family: 'Plus Jakarta Sans', sans-serif; line-height: 1.6; overflow-x: hidden; }
 
  /* NAV */
  nav {
    position: fixed; top: 0; width: 100%; z-index: 100;
    background: rgba(255,255,255,0.92); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 6%; height: 68px;
  }
  .logo { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.5px; text-decoration: none; color: var(--text); }
  .logo em { font-style: normal; color: var(--accent); }
  nav ul { display: flex; gap: 2rem; list-style: none; }
  nav a { color: var(--sub); text-decoration: none; font-size: 0.88rem; font-weight: 500; transition: color .2s; }
  nav a:hover { color: var(--accent); }
  .nav-cta {
    background: var(--accent) !important; color: #fff !important; padding: 9px 22px !important;
    border-radius: 10px; font-weight: 700 !important;
    box-shadow: 0 2px 8px rgba(37,99,235,0.3);
  }
  .nav-cta:hover { background: #1d4ed8 !important; }
 
  /* HAMBURGER */
  .hamburger {
    display: none; flex-direction: column; gap: 5px; cursor: pointer;
    padding: 6px; border: none; background: none; z-index: 200;
  }
  .hamburger span {
    display: block; width: 24px; height: 2px; background: var(--text);
    border-radius: 2px; transition: all .3s ease;
  }
  .hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
  .hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
 
  /* SIDEBAR OVERLAY */
  .sidebar-overlay {
    position: fixed; inset: 0;
    background: rgba(15,23,42,0.45); z-index: 150;
    backdrop-filter: blur(3px);
    opacity: 0; pointer-events: none;
    transition: opacity .3s ease;
  }
  .sidebar-overlay.active { opacity: 1; pointer-events: all; }
 
  /* SIDEBAR */
  .sidebar {
    position: fixed; top: 0; right: -100%; width: 290px; height: 100%;
    background: white; z-index: 160;
    box-shadow: -8px 0 40px rgba(0,0,0,0.12);
    transition: right .35s cubic-bezier(.4,0,.2,1);
    display: flex; flex-direction: column;
    overflow-y: auto;
  }
  .sidebar.open { right: 0; }
 
  .sidebar-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 24px; border-bottom: 1px solid var(--border);
    position: sticky; top: 0; background: white; z-index: 1;
  }
  .sidebar-close {
    width: 34px; height: 34px; border-radius: 8px;
    border: 1.5px solid var(--border); background: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    color: var(--sub); font-size: 1rem; transition: background .2s, color .2s;
  }
  .sidebar-close:hover { background: var(--surface); color: var(--text); }
 
  .sidebar-guest {
    margin: 16px 16px 0;
    padding: 16px;
    background: linear-gradient(135deg, #eff4ff 0%, #f5f0ff 100%);
    border: 1px solid #bfdbfe;
    border-radius: 16px;
    display: flex; align-items: center; gap: 14px;
  }
  .sidebar-guest-avatar {
    width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 4px 12px rgba(37,99,235,0.25);
  }
  .sidebar-guest-info { flex: 1; min-width: 0; }
  .sidebar-guest-title {
    font-size: 0.82rem; font-weight: 700; color: var(--text);
    margin-bottom: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }
  .sidebar-guest-sub {
    font-size: 0.72rem; color: var(--sub); line-height: 1.4;
  }
  .sidebar-guest-badge {
    display: inline-block; background: #fef3c7; color: #92400e;
    font-size: 0.62rem; font-weight: 700; padding: 2px 7px;
    border-radius: 50px; letter-spacing: 0.5px; text-transform: uppercase;
    margin-top: 4px; border: 1px solid #fde68a;
  }
  .sidebar-nav a {
    display: flex; align-items: center; gap: 12px;
    padding: 13px 24px; color: var(--sub); text-decoration: none;
    font-size: 0.93rem; font-weight: 500;
    transition: background .15s, color .15s, border-color .15s;
    border-left: 3px solid transparent;
  }
  .sidebar-nav a:hover, .sidebar-nav a:active {
    background: var(--accent-soft); color: var(--accent); border-left-color: var(--accent);
  }
  .sidebar-divider { height: 1px; background: var(--border); margin: 8px 24px; }
  .sidebar-section-label {
    padding: 10px 24px 4px; font-size: 0.68rem; font-weight: 700;
    letter-spacing: 1.5px; text-transform: uppercase; color: var(--muted);
  }
 
  .sidebar-footer {
    padding: 20px 24px; border-top: 1px solid var(--border);
    display: flex; flex-direction: column; gap: 10px;
    position: sticky; bottom: 0; background: white;
  }
  .sidebar-footer .btn-primary { text-align: center; justify-content: center; display: flex; }
  .sidebar-footer .btn-outline-sm {
    text-align: center; display: flex; justify-content: center;
    padding: 11px 20px; border-radius: 12px; font-weight: 600;
    font-size: 0.9rem; text-decoration: none; color: var(--sub);
    border: 1.5px solid var(--border2); transition: border-color .2s, color .2s;
  }
  .sidebar-footer .btn-outline-sm:hover { border-color: var(--accent); color: var(--accent); }
 
 
 
 
 
 
 
  /* HERO */
  .hero {
    min-height: 100vh; display: flex; align-items: center;
    padding: 120px 6% 80px; position: relative; overflow: hidden;
  }
  .hero-bg {
    position: absolute; inset: 0; z-index: 0;
    background:
      radial-gradient(ellipse 70% 60% at 65% 45%, rgba(37,99,235,0.06) 0%, transparent 70%),
      radial-gradient(ellipse 40% 35% at 15% 75%, rgba(124,58,237,0.04) 0%, transparent 60%);
  }
  .hero-dots {
    position: absolute; inset: 0; z-index: 0;
    background-image: radial-gradient(circle, #cbd5e1 1px, transparent 1px);
    background-size: 32px 32px; opacity: 0.4;
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 65% 40%, black 0%, transparent 80%);
    mask-image: radial-gradient(ellipse 80% 70% at 65% 40%, black 0%, transparent 80%);
  }
  .hero-inner { position: relative; z-index: 1; max-width: 620px; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--accent-soft); border: 1px solid #bfdbfe;
    color: var(--accent); padding: 7px 16px; border-radius: 50px; font-size: 0.79rem;
    font-weight: 600; letter-spacing: 0.3px; margin-bottom: 28px;
    animation: fadeUp 0.5s ease both;
  }
  .badge-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); animation: pulse 2s infinite; }
  @keyframes pulse { 0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.4)} }
  .hero h1 {
    font-size: clamp(2.6rem, 5.5vw, 4.4rem); font-weight: 800; line-height: 1.08;
    letter-spacing: -2px; margin-bottom: 24px;
    animation: fadeUp 0.6s ease both 0.1s;
  }
  .hero h1 .grad {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  }
  .hero p {
    font-size: 1.1rem; color: var(--sub); line-height: 1.75; margin-bottom: 40px;
    animation: fadeUp 0.6s ease both 0.2s;
  }
  .hero-btns { display: flex; gap: 14px; flex-wrap: wrap; animation: fadeUp 0.6s ease both 0.3s; }
  .btn-primary {
    background: var(--accent); color: #fff; padding: 14px 30px;
    border-radius: 12px; font-weight: 700; text-decoration: none; font-size: 0.95rem;
    box-shadow: 0 4px 14px rgba(37,99,235,0.35); transition: transform .2s, box-shadow .2s, background .2s;
    display: inline-flex; align-items: center; gap: 8px;
  }
  .btn-primary:hover { background: #1d4ed8; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,0.4); }
  .btn-outline {
    background: white; color: var(--text); padding: 14px 30px;
    border-radius: 12px; font-weight: 600; text-decoration: none; font-size: 0.95rem;
    border: 1.5px solid var(--border2); transition: border-color .2s, color .2s, transform .2s;
  }
  .btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
 
 
 
  /* STATS */
  .stats {
    background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
    display: flex; justify-content: center; flex-wrap: wrap;
  }
  .stat-item { text-align: center; padding: 36px 52px; border-right: 1px solid var(--border); }
  .stat-item:last-child { border-right: none; }
  .stat-num { font-size: 2.2rem; font-weight: 800; letter-spacing: -1px; color: var(--accent); }
  .stat-label { color: var(--muted); font-size: 0.82rem; font-weight: 500; margin-top: 4px; }
 
  /* SECTION */
  section { padding: 96px 6%; }
  .section-label { font-size: 0.72rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
  .section-title { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 800; letter-spacing: -0.8px; margin-bottom: 14px; }
  .section-sub { color: var(--sub); font-size: 1rem; max-width: 480px; line-height: 1.75; }
  .section-header { margin-bottom: 56px; }
 
  /* PLATFORMS */
  .platforms-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(272px, 1fr)); gap: 18px; }
  .platform-card {
    background: var(--card); border: 1.5px solid var(--border); border-radius: 20px;
    padding: 32px; transition: transform .25s, box-shadow .25s, border-color .25s;
    position: relative; overflow: hidden;
  }
  .platform-card::after { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--plat-color); }
  .platform-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--plat-color); }
  .platform-icon {
    width: 60px; height: 60px; border-radius: 16px;
    display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
    background: rgba(255,255,255,0.7); backdrop-filter: blur(10px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08); transition: all 0.3s ease;
  }
  .platform-icon img { width: 34px; height: 34px; object-fit: contain; }
  .platform-icon:hover { transform: translateY(-4px) scale(1.05); box-shadow: 0 14px 30px rgba(0,0,0,0.12); }
  .platform-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.3px; }
  .service-list { list-style: none; display: flex; flex-direction: column; gap: 9px; }
  .service-list li { display: flex; align-items: center; gap: 10px; color: var(--sub); font-size: 0.875rem; }
  .service-list li::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--plat-color); flex-shrink: 0; }
  .service-list a { color: inherit; text-decoration: none; transition: color .15s; }
  .service-list a:hover { color: var(--text); font-weight: 600; }
  .card-fb { --plat-color: var(--fb); }
  .card-ig { --plat-color: var(--ig); }
  .card-tk { --plat-color: var(--tk); }
  .card-sh { --plat-color: var(--sh); }
 
  /* WHY */
  .why-bg { background: var(--surface); }
  .why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
  .why-card {
    background: white; border: 1.5px solid var(--border); border-radius: 18px; padding: 28px;
    transition: box-shadow .2s, border-color .2s, transform .2s;
  }
  .why-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
  .why-icon { width: 46px; height: 46px; border-radius: 13px; background: var(--accent-soft); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; margin-bottom: 16px; }
  .why-card h4 { font-weight: 700; font-size: 0.95rem; margin-bottom: 9px; }
  .why-card p { color: var(--sub); font-size: 0.865rem; line-height: 1.65; }
 
  /* HOW */
  .steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; position: relative; }
  .steps::before {
    content: ''; position: absolute; top: 27px; left: 10%; right: 10%; height: 1.5px;
    background: repeating-linear-gradient(90deg, var(--border) 0, var(--border) 8px, transparent 8px, transparent 16px);
    z-index: 0;
  }
  .step { text-align: center; position: relative; z-index: 1; }
  .step-num {
    width: 56px; height: 56px; border-radius: 16px; background: var(--accent); color: #fff;
    font-size: 1.3rem; font-weight: 800; display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; box-shadow: 0 4px 14px rgba(37,99,235,0.3);
  }
  .step h4 { font-weight: 700; font-size: 0.95rem; margin-bottom: 9px; }
  .step p { color: var(--sub); font-size: 0.87rem; line-height: 1.65; }
 
  /* FOOTER */
  footer { background: #0f172a; color: #94a3b8; padding: 64px 6% 32px; }
  .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
  .footer-logo { font-size: 1.3rem; font-weight: 800; color: white; margin-bottom: 14px; }
  .footer-logo em { font-style: normal; color: #60a5fa; }
  .footer-col p { font-size: 0.875rem; line-height: 1.7; }
  .footer-col h5 { color: white; font-weight: 700; margin-bottom: 16px; font-size: 0.9rem; }
  .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
  .footer-col ul a { color: #94a3b8; text-decoration: none; font-size: 0.875rem; transition: color .2s; }
  .footer-col ul a:hover { color: white; }
  .footer-bottom { border-top: 1px solid #1e293b; padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
  .footer-bottom p, .footer-bottom a { font-size: 0.82rem; color: #475569; text-decoration: none; }
  .footer-bottom a:hover { color: #94a3b8; }
 
  @keyframes fadeUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }
 
  @media (max-width: 1024px) { .hero-visual { display: none; } }
  @media (max-width: 768px) {
    nav ul { display: none; }
    .hamburger { display: flex; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .stat-item { padding: 28px 32px; border-right: none; border-bottom: 1px solid var(--border); }
    .stat-item:last-child { border-bottom: none; }
    .steps::before { display: none; }
  }