:root {
      --primary: #4f8ef7;
      --primary-glow: rgba(79,142,247,0.25);
      --accent: #a78bfa;
      --accent-glow: rgba(167,139,250,0.2);
      --green: #34d399;
      --orange: #f59e0b;
      --bg: #0a0b0f;
      --bg2: #0f1117;
      --glass: rgba(255,255,255,0.04);
      --glass-border: rgba(255,255,255,0.08);
      --text: #f1f5f9;
      --muted: rgba(241,245,249,0.55);
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body { background: var(--bg); color: var(--text); font-family: 'Inter', sans-serif; overflow-x: hidden; }

    /* NAV */
    .inst-nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
      background: rgba(10,11,15,0.85); backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--glass-border);
      padding: 14px 32px; display: flex; align-items: center; justify-content: space-between;
    }
    .inst-nav .brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
    .inst-nav .brand img { height: 38px; }
    .inst-nav .brand span { font-family: 'Sora', sans-serif; font-weight: 700; font-size: 1.1rem; color: var(--text); }
    .nav-links { display: flex; align-items: center; gap: 24px; list-style: none; }
    .nav-links a { color: var(--muted); text-decoration: none; font-size: 0.88rem; font-weight: 500; transition: color 0.2s; }
    .nav-links a:hover { color: var(--text); }
    .nav-cta { background: var(--primary); color: white !important; padding: 9px 20px; border-radius: 50px; font-weight: 600 !important; transition: opacity 0.2s !important; }
    .nav-cta:hover { opacity: 0.85; }
    @media (max-width: 768px) { .nav-links { display: none; } }

    /* HERO */
    .inst-hero {
      min-height: 100vh; display: flex; align-items: center; justify-content: center;
      text-align: center; padding: 120px 24px 80px;
      background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(79,142,247,0.12) 0%, transparent 60%),
                  radial-gradient(ellipse 60% 40% at 80% 80%, rgba(167,139,250,0.08) 0%, transparent 60%), var(--bg);
      position: relative; overflow: hidden;
    }
    .inst-hero::before {
      content: ''; position: absolute; top: 20%; left: 50%; transform: translateX(-50%);
      width: 600px; height: 600px; border-radius: 50%;
      background: radial-gradient(circle, rgba(79,142,247,0.06) 0%, transparent 70%);
      pointer-events: none;
    }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(79,142,247,0.12); border: 1px solid rgba(79,142,247,0.25);
      color: var(--primary); padding: 6px 16px; border-radius: 50px;
      font-size: 0.8rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
      margin-bottom: 24px;
    }
    .inst-hero h1 {
      font-family: 'Sora', sans-serif; font-weight: 800;
      font-size: clamp(2.2rem, 5vw, 4rem); line-height: 1.15;
      color: var(--text); max-width: 860px; margin: 0 auto 20px;
    }
    .inst-hero h1 .grad {
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    }
    .inst-hero p { font-size: 1.1rem; color: var(--muted); max-width: 640px; margin: 0 auto 40px; line-height: 1.7; }
    .hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
    .btn-primary-inst {
      background: var(--primary); color: white; padding: 14px 32px; border-radius: 50px;
      font-weight: 700; font-size: 1rem; border: none; cursor: pointer; text-decoration: none;
      display: inline-flex; align-items: center; gap: 8px;
      box-shadow: 0 0 24px var(--primary-glow); transition: all 0.25s;
    }
    .btn-primary-inst:hover { transform: translateY(-2px); box-shadow: 0 0 36px var(--primary-glow); color: white; }
    .btn-outline-inst {
      background: transparent; color: var(--text); padding: 14px 32px; border-radius: 50px;
      font-weight: 600; font-size: 1rem; border: 1px solid var(--glass-border); cursor: pointer;
      text-decoration: none; display: inline-flex; align-items: center; gap: 8px; transition: all 0.25s;
    }
    .btn-outline-inst:hover { border-color: var(--primary); color: var(--primary); }

    /* STATS BAR */
    .stats-bar {
      background: var(--glass); border-top: 1px solid var(--glass-border); border-bottom: 1px solid var(--glass-border);
      padding: 32px 0;
    }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
    .stat-item {
      text-align: center; padding: 20px; border-right: 1px solid var(--glass-border);
    }
    .stat-item:last-child { border-right: none; }
    .stat-num { font-family: 'Sora', sans-serif; font-weight: 800; font-size: 2.2rem; color: var(--primary); }
    .stat-label { font-size: 0.82rem; color: var(--muted); margin-top: 4px; font-weight: 500; }
    @media (max-width: 640px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } .stat-item:nth-child(2) { border-right: none; } }

    /* SECTION */
    section { padding: 88px 0; }
    .container-inst { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
    .section-label {
      display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em;
      text-transform: uppercase; color: var(--primary); margin-bottom: 12px;
    }
    .section-title { font-family: 'Sora', sans-serif; font-weight: 800; font-size: clamp(1.8rem, 3.5vw, 2.6rem); line-height: 1.2; margin-bottom: 16px; }
    .section-sub { color: var(--muted); font-size: 1.05rem; line-height: 1.7; max-width: 560px; }

    /* SEGMENT TABS */
    .segment-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 40px; }
    .seg-tab {
      padding: 10px 20px; border-radius: 50px; border: 1px solid var(--glass-border);
      background: var(--glass); color: var(--muted); font-weight: 600; font-size: 0.88rem;
      cursor: pointer; transition: all 0.2s;
    }
    .seg-tab.active, .seg-tab:hover { background: var(--primary); border-color: var(--primary); color: white; }

    .segment-panel { display: none; }
    .segment-panel.active { display: block; }

    .segment-card {
      background: var(--glass); border: 1px solid var(--glass-border); border-radius: 20px;
      padding: 36px; display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
    }
    @media (max-width: 768px) { .segment-card { grid-template-columns: 1fr; gap: 28px; } }
    .seg-icon-wrap {
      width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
      font-size: 1.5rem; margin-bottom: 16px;
    }
    .seg-title { font-family: 'Sora', sans-serif; font-weight: 700; font-size: 1.5rem; margin-bottom: 12px; }
    .seg-desc { color: var(--muted); line-height: 1.7; margin-bottom: 20px; }
    .seg-features { list-style: none; display: flex; flex-direction: column; gap: 10px; }
    .seg-features li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.92rem; }
    .seg-features li i { color: var(--green); margin-top: 3px; flex-shrink: 0; }
    .seg-img-box {
      border-radius: 16px; overflow: hidden; background: var(--bg2);
      border: 1px solid var(--glass-border); padding: 32px; text-align: center;
    }
    .seg-kit-info { background: rgba(79,142,247,0.08); border-radius: 12px; padding: 20px; margin-top: 20px; }
    .seg-kit-info p { font-size: 0.85rem; color: var(--muted); margin-bottom: 6px; }
    .seg-kit-info .price { font-size: 1.4rem; font-weight: 800; color: var(--primary); }
    .seg-kit-info .price span { font-size: 0.85rem; font-weight: 400; color: var(--muted); }

    /* PACKAGES */
    .packages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    @media (max-width: 900px) { .packages-grid { grid-template-columns: 1fr; } }
    .pkg-card {
      background: var(--glass); border: 1px solid var(--glass-border); border-radius: 20px;
      padding: 32px; position: relative; transition: transform 0.25s, border-color 0.25s;
    }
    .pkg-card:hover { transform: translateY(-4px); border-color: rgba(79,142,247,0.3); }
    .pkg-card.featured { border-color: rgba(79,142,247,0.4); background: rgba(79,142,247,0.06); }
    .pkg-card.featured::before {
      content: 'MOST POPULAR'; position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
      background: var(--primary); color: white; font-size: 0.7rem; font-weight: 700; letter-spacing: 0.08em;
      padding: 4px 14px; border-radius: 50px;
    }
    .pkg-name { font-family: 'Sora', sans-serif; font-weight: 700; font-size: 1.1rem; margin-bottom: 6px; }
    .pkg-target { font-size: 0.8rem; color: var(--muted); margin-bottom: 20px; }
    .pkg-price { font-size: 2rem; font-weight: 800; color: var(--text); margin-bottom: 4px; }
    .pkg-price sup { font-size: 1rem; vertical-align: super; }
    .pkg-period { font-size: 0.82rem; color: var(--muted); margin-bottom: 24px; }
    .pkg-features { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
    .pkg-features li { display: flex; align-items: center; gap: 10px; font-size: 0.88rem; color: var(--muted); }
    .pkg-features li i { color: var(--green); font-size: 0.8rem; }
    .pkg-btn {
      width: 100%; padding: 12px; border-radius: 50px; font-weight: 700; font-size: 0.9rem;
      cursor: pointer; border: none; transition: all 0.25s;
    }
    .pkg-btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary) !important; border: none; }
    .pkg-btn-outline:hover { background: var(--primary); color: white; }
    .pkg-btn-solid { background: var(--primary); color: white; box-shadow: 0 0 20px var(--primary-glow); }
    .pkg-btn-solid:hover { opacity: 0.88; }

    /* PROCESS */
    .process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    @media (max-width: 768px) { .process-steps { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 480px) { .process-steps { grid-template-columns: 1fr; } }
    .step-card {
      background: var(--glass); border: 1px solid var(--glass-border); border-radius: 16px;
      padding: 28px 22px; text-align: center; position: relative;
    }
    .step-num {
      width: 48px; height: 48px; border-radius: 50%; background: var(--primary-glow);
      border: 2px solid var(--primary); color: var(--primary); font-weight: 800; font-size: 1.1rem;
      display: flex; align-items: center; justify-content: center; margin: 0 auto 16px;
    }
    .step-title { font-weight: 700; font-size: 0.95rem; margin-bottom: 8px; }
    .step-desc { font-size: 0.83rem; color: var(--muted); line-height: 1.5; }

    /* FORM SECTION */
    .form-section {
      background: radial-gradient(ellipse 80% 60% at 50% 100%, rgba(167,139,250,0.08) 0%, transparent 60%), var(--bg2);
      border-top: 1px solid var(--glass-border);
    }
    .form-wrapper {
      display: grid; grid-template-columns: 1fr 1.4fr; gap: 64px; align-items: start;
    }
    @media (max-width: 900px) { .form-wrapper { grid-template-columns: 1fr; gap: 40px; } }
    .form-info-item { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 24px; }
    .form-info-icon {
      width: 44px; height: 44px; flex-shrink: 0; border-radius: 12px;
      background: var(--glass); border: 1px solid var(--glass-border);
      display: flex; align-items: center; justify-content: center; font-size: 1rem; color: var(--primary);
    }
    .form-info-label { font-weight: 700; font-size: 0.9rem; margin-bottom: 3px; }
    .form-info-val { font-size: 0.85rem; color: var(--muted); }

    .inst-form {
      background: var(--glass); border: 1px solid var(--glass-border); border-radius: 24px; padding: 40px;
    }
    .inst-form h3 { font-family: 'Sora', sans-serif; font-weight: 800; font-size: 1.5rem; margin-bottom: 6px; }
    .inst-form .sub { color: var(--muted); font-size: 0.88rem; margin-bottom: 28px; }
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    @media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }
    .form-group { margin-bottom: 18px; }
    .form-group label { font-size: 0.82rem; font-weight: 600; color: var(--muted); margin-bottom: 6px; display: block; }
    .form-group input, .form-group select, .form-group textarea {
      width: 100%; background: rgba(255,255,255,0.05); border: 1px solid var(--glass-border);
      border-radius: 10px; padding: 12px 14px; color: var(--text); font-size: 0.9rem;
      font-family: 'Inter', sans-serif; outline: none; transition: border-color 0.2s;
    }
    .form-group input::placeholder, .form-group textarea::placeholder { color: rgba(241,245,249,0.3); }
    .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
      border-color: var(--primary); background: rgba(79,142,247,0.05);
    }
    .form-group select option { background: #1a1d26; }
    .form-group textarea { resize: vertical; min-height: 100px; }
    .form-submit {
      width: 100%; padding: 14px; background: var(--primary); color: white; border: none;
      border-radius: 50px; font-weight: 700; font-size: 1rem; cursor: pointer;
      display: flex; align-items: center; justify-content: center; gap: 8px;
      transition: all 0.25s; box-shadow: 0 0 24px var(--primary-glow);
    }
    .form-submit:hover { transform: translateY(-2px); opacity: 0.9; }
    .form-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
    #b2b-form-msg { margin-top: 16px; padding: 12px 16px; border-radius: 10px; font-size: 0.88rem; display: none; }
    #b2b-form-msg.success { background: rgba(52,211,153,0.1); border: 1px solid rgba(52,211,153,0.3); color: var(--green); }
    #b2b-form-msg.error { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); color: #f87171; }

    /* FOOTER */
    .inst-footer {
      background: #060709; border-top: 1px solid var(--glass-border);
      padding: 32px 24px; text-align: center;
    }
    .inst-footer a { color: var(--muted); text-decoration: none; margin: 0 12px; font-size: 0.85rem; }
    .inst-footer a:hover { color: var(--primary); }
    .inst-footer p { color: var(--muted); font-size: 0.82rem; margin-top: 12px; }

    /* ANIMATIONS */
    @keyframes fadeInUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
    .animate-in { animation: fadeInUp 0.6s ease forwards; }
    .delay-1 { animation-delay: 0.15s; opacity: 0; }
    .delay-2 { animation-delay: 0.3s; opacity: 0; }
    .delay-3 { animation-delay: 0.45s; opacity: 0; }
    #wa-float-btn:hover { transform:scale(1.1); box-shadow:0 6px 28px rgba(37,211,102,0.6); }
    #wa-float-btn:hover #wa-tooltip { opacity:1; }
    @keyframes wa-pulse {
      0%,100% { box-shadow: 0 4px 20px rgba(37,211,102,0.45); }
      50%      { box-shadow: 0 4px 32px rgba(37,211,102,0.8), 0 0 0 10px rgba(37,211,102,0.1); }
    }
    #wa-float-btn { animation: wa-pulse 2.5s ease-in-out infinite; }
    #wa-float-btn:hover { animation: none; }