:root {
      --blue: #25f0ff;
      --blue-dark: #081c2b;
      --white: #fff;
      --black: #10131a;
      --glass-bg: rgba(20,26,44,0.65);
      --red: #ff2e54;
      --card-glow: 0 0 24px 4px var(--blue);
      --neon-fade: 0 0 60px 12px var(--blue);
      --radius: 1.5rem;
      --font-main: 'Sora', Arial, sans-serif;
      --font-mono: 'JetBrains Mono', 'Fira Mono', monospace;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html, body {
      margin: 0; padding: 0;
      font-family: var(--font-main);
      background: linear-gradient(120deg, var(--blue-dark) 0%, #161d2d 100%);
      color: var(--white);
      min-height: 100vh;
      scroll-behavior: smooth;
      letter-spacing: 0.02em;
    }
    body {
      display: flex; flex-direction: column;
    }
    a { color: inherit; text-decoration: none; transition: color 0.2s; }
    a:focus-visible, button:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px;}
    img { display: block; max-width: 100%; height: auto; }
    h1,h2,h3,h4,strong { font-family: var(--font-main); font-weight: 700;}
    .container { width: 92%; max-width: 1240px; margin: 0 auto; }

    /* HEADER */
    header {
      width: 100%;
      background: linear-gradient(90deg, #10131a 80%, #0f2f45 100%);
      box-shadow: 0 2px 24px #000a 0.5;
      position: sticky; top: 0; z-index: 100;
    }
    .navbar {
      display: flex; justify-content: space-between; align-items: center;
      padding: 1.2rem 0;
    }
    .logo-brand {
      display: flex; align-items: center; gap: 1.1rem;
    }
    .logo-brand img {
      width: 52px; height: 52px; border-radius: 50%; border: 2px solid var(--blue);
      box-shadow: 0 0 24px 4px var(--blue);
      background: var(--glass-bg);
    }
    .logo-title {
      font-size: 2.1rem; font-weight: 700;
      color: var(--blue);
      letter-spacing: 0.03em;
      text-shadow: 0 0 10px var(--blue);
      font-family: var(--font-main);
    }
    nav {
      display: flex; gap: 2.5rem;
    }
    nav a {
      font-weight: 600;
      font-size: 1.07rem;
      letter-spacing: 0.02em;
      padding: 0.4rem 1.1rem;
      border-radius: 0.9rem;
      transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    }
    nav a:hover, nav a.active {
      background: var(--blue);
      color: var(--black);
      box-shadow: 0 0 12px 0 var(--blue);
    }
    .nav-toggle { display: none; }
    @media (max-width: 900px) {
      nav { display: none; position: fixed; top: 0; right: 0; width: 65vw; height: 100vh; background: var(--black); flex-direction: column; gap: 2rem; padding: 5rem 2rem 2rem 2rem; box-shadow: -6px 0 32px #000b; z-index: 1000;}
      nav.open { display: flex; }
      .nav-toggle {
        display: block; background: none; border: none; color: var(--blue); font-size: 2.1rem; cursor: pointer;
      }
    }

    /* HERO SECTION */
    .hero {
      min-height: 94vh;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      padding: 6rem 0 3rem 0;
      position: relative;
      isolation: isolate;
      overflow: hidden;
    }
    .hero-bg-anim {
      position: absolute; left: 50%; top: 50%; z-index: 0;
      width: 160vw; height: 140vh; pointer-events: none;
      transform: translate(-50%, -55%);
      background: radial-gradient(circle at 60% 40%, #25f0ff44 0%, #10131a 85%);
      filter: blur(18px);
      opacity: 0.85;
      animation: hero-bg-move 18s linear infinite alternate;
    }
    @keyframes hero-bg-move {
      from { background-position: 60% 40%;}
      to { background-position: 40% 60%;}
    }
    .hero-content {
      display: flex; flex-direction: column-reverse; align-items: center; gap: 3rem; position: relative; z-index: 1;
    }
    @media (min-width: 900px) {
      .hero-content { flex-direction: row; justify-content: space-between; gap: 6rem;}
    }
    .hero-logo-anim {
      position: relative; width: 310px; height: 310px;
      display: flex; align-items: center; justify-content: center;
      margin-bottom: 1.5rem;
    }
    .hero-logo-anim .neon-orb {
      position: absolute; left: 50%; top: 50%;
      width: 310px; height: 310px;
      transform: translate(-50%,-50%);
      border-radius: 50%;
      background: conic-gradient(from 0deg, #25f0ff88 0% 30%, #ff2e5466 40% 60%, #25f0ff88 70% 100%);
      filter: blur(24px);
      z-index: 1;
      animation: neon-spin 8s linear infinite;
    }
    .hero-logo-anim .logo-blur {
      position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
      width: 230px; height: 230px; border-radius: 50%;
      background: radial-gradient(circle, #25f0ff55 0%, #ff2e5422 70%, transparent 100%);
      filter: blur(26px);
      z-index: 2;
      opacity: 0.7;
      pointer-events: none;
    }
    .hero-logo-anim .particle {
      position: absolute; border-radius: 50%;
      background: var(--blue);
      opacity: 0.85;
      animation: float-particle 5s linear infinite;
      pointer-events: none;
    }
    .hero-logo-anim .particle.red { background: var(--red);}
    .hero-logo-anim .particle1 { width: 18px; height: 18px; left: 10%; top: 38%; animation-delay: 0.2s;}
    .hero-logo-anim .particle2 { width: 12px; height: 12px; left: 80%; top: 62%; animation-delay: 1.2s;}
    .hero-logo-anim .particle3 { width: 10px; height: 10px; left: 58%; top: 12%; background: var(--red); animation-delay: 0.8s;}
    .hero-logo-anim .particle4 { width: 14px; height: 14px; left: 30%; top: 84%; animation-delay: 2s;}
    @keyframes neon-spin { 0% {transform: translate(-50%,-50%) rotate(0deg);} 100% {transform: translate(-50%,-50%) rotate(360deg);} }
    @keyframes float-particle {
      0% {transform: scale(1) translateY(0);}
      50% {transform: scale(1.4) translateY(-16px);}
      100% {transform: scale(1) translateY(0);}
    }
    .hero-logo-anim img {
      width: 170px; height: 170px;
      border-radius: 50%;
      border: 3.5px solid var(--blue);
      box-shadow: 0 0 24px 0 var(--blue), 0 0 12px 0 var(--red), 0 0 0 8px var(--glass-bg);
      background: var(--glass-bg);
      position: relative; z-index: 10;
      transition: box-shadow 0.4s;
    }
    .hero-logo-anim img:hover, .hero-logo-anim img:focus-visible {
      box-shadow: 0 0 40px 8px var(--blue), 0 0 20px 4px var(--red);
    }
    .hero-text {
      max-width: 500px; text-align: center;
    }
    @media (min-width: 900px) {
      .hero-text { text-align: left; }
    }
    .hero-text h1 {
      font-size: 2.5rem; color: var(--white); font-weight: 700; line-height: 1.15;
      text-shadow: 0 0 24px var(--blue), 0 2px 10px #0008;
    }
    .hero-text h1 span { color: var(--blue); text-shadow: 0 0 18px var(--blue);}
    .hero-text p {
      color: #d0eaff;
      font-size: 1.15rem;
      margin: 1.5rem 0 2.2rem 0;
      font-weight: 500;
      letter-spacing: 0.01em;
      line-height: 1.5;
    }
    .hero-btns {
      display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center;
    }
    .btn-main, .btn-sec {
      padding: 0.85rem 2.2rem; font-size: 1.13rem;
      font-family: var(--font-main);
      font-weight: 700;
      border-radius: 1.2rem;
      transition: background 0.18s, color 0.18s, box-shadow 0.18s, transform 0.19s;
      outline: none; border: none; cursor: pointer;
      box-shadow: 0 0 24px 0 var(--blue-dark);
      margin-bottom: 0.2rem;
      letter-spacing: 0.03em;
      user-select: none;
    }
    .btn-main {
      background: linear-gradient(90deg,#25f0ff 70%, #ff2e54 100%);
      color: var(--black);
      box-shadow: 0 0 16px 2px var(--blue);
    }
    .btn-main:hover, .btn-main:focus-visible {
      background: linear-gradient(90deg, #25f0ff 30%, #ff2e54 100%);
      color: var(--white);
      transform: translateY(-2px) scale(1.05);
      box-shadow: 0 0 24px 2px var(--blue), 0 0 8px var(--red);
    }
    .btn-sec {
      background: var(--glass-bg);
      color: var(--blue);
      border: 2.5px solid var(--blue);
      box-shadow: 0 0 12px 0 var(--blue-dark);
    }
    .btn-sec:hover, .btn-sec:focus-visible {
      background: var(--blue);
      color: var(--black);
      transform: translateY(-2px) scale(1.05);
    }
    @media (max-width: 600px) {
      .hero-logo-anim { width: 96vw; height: 96vw; max-width: 310px; max-height: 310px;}
      .hero-logo-anim img { width: 112px; height: 112px;}
    }

    /* MENU FITUR */
    section#fitur {
      padding: 4.5rem 0 2rem 0;
      background: linear-gradient(120deg, #161d2d 60%, #10131a 100%);
      position: relative;
      z-index: 1;
    }
    .fitur-title {
      text-align: center; font-size: 2.1rem;
      font-weight: 700; color: var(--blue);
      margin-bottom: 2.5rem;
      letter-spacing: 0.02em;
    }
    .fitur-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2.2rem;
    }
    @media (min-width: 700px) {
      .fitur-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }
    .fitur-card {
      background: var(--glass-bg);
      border-radius: var(--radius);
      box-shadow: 0 0 24px 0 #1effff22;
      padding: 2rem 1.2rem 1.8rem 1.2rem;
      display: flex; flex-direction: column; align-items: flex-start;
      min-height: 260px;
      position: relative;
      overflow: hidden;
      transition: box-shadow 0.2s, transform 0.2s;
      border: 1.5px solid #25f0ff33;
    }
    .fitur-card:hover, .fitur-card:focus-within {
      box-shadow: 0 2px 28px 4px var(--blue), 0 0 12px 2px var(--red);
      transform: translateY(-4px) scale(1.027);
    }
    .fitur-card .fitur-ico {
      font-size: 2rem; background: var(--blue); color: var(--black);
      border-radius: 50%; padding: 0.65rem; margin-bottom: 1.2rem;
      box-shadow: 0 0 12px 0 var(--blue), 0 0 0 2px var(--red);
      transition: box-shadow 0.3s;
      border: 2px solid var(--blue-dark);
    }
    .fitur-card h3 {
      color: var(--white); font-size: 1.22rem; font-weight: 700;
      margin-bottom: 0.6rem;
    }
    .fitur-card p {
      color: #b7f8ff;
      font-size: 1rem;
      font-weight: 500;
      letter-spacing: 0.01em;
    }

    /* KEUNGGULAN */
    section#keunggulan {
      padding: 4.5rem 0 2rem 0;
      background: linear-gradient(120deg, #10131a 60%, #182b3e 100%);
    }
    .keunggulan-title {
      text-align: center; font-size: 2.1rem;
      font-weight: 700; color: var(--blue);
      margin-bottom: 2.3rem;
    }
    .keunggulan-grid {
      display: grid; grid-template-columns: 1fr;
      gap: 2rem;
    }
    @media (min-width: 700px) {
      .keunggulan-grid { grid-template-columns: repeat(3, 1fr);}
    }
    .keunggulan-card {
      background: rgba(16,31,44,0.76);
      border-radius: var(--radius);
      box-shadow: 0 0 18px 0 var(--blue-dark);
      border: 1.5px solid #25f0ff55;
      padding: 1.8rem 1rem 1.5rem 1rem;
      display: flex; flex-direction: column; align-items: center;
      min-height: 180px;
      transition: box-shadow 0.2s, transform 0.2s;
      text-align: center;
    }
    .keunggulan-card:hover, .keunggulan-card:focus-within {
      box-shadow: 0 0 18px 0 var(--blue), 0 0 0 4px var(--red);
      transform: translateY(-3px) scale(1.03);
    }
    .keunggulan-card .keunggulan-ico {
      font-size: 2.1rem; color: var(--blue);
      margin-bottom: 1.1rem;
      filter: drop-shadow(0 0 12px var(--blue));
    }
    .keunggulan-card h3 {
      color: var(--white); font-size: 1.11rem; font-weight: 700; margin-bottom: 0.5rem;
    }
    .keunggulan-card p {
      color: #c6f5ff;
      font-size: 1.01rem;
      font-weight: 500;
      letter-spacing: 0.005em;
    }

    /* PAKET HARGA */
    section#paket {
      padding: 4.5rem 0 2rem 0;
      background: linear-gradient(120deg, #182b3e 60%, #10131a 100%);
    }
    .paket-title {
      text-align: center; font-size: 2.1rem;
      font-weight: 700; color: var(--blue); margin-bottom: 2.3rem;
    }
    .paket-grid {
      display: grid; grid-template-columns: 1fr;
      gap: 2.2rem;
    }
    @media (min-width: 900px) {
      .paket-grid { grid-template-columns: repeat(3, 1fr);}
    }
    .paket-card {
      background: var(--glass-bg);
      border-radius: var(--radius);
      box-shadow: 0 0 18px 0 #25f0ff33;
      padding: 2rem 1.2rem 2.2rem 1.2rem;
      display: flex; flex-direction: column; align-items: center;
      min-height: 410px;
      border: 2.5px solid #25f0ff33;
      position: relative;
      transition: box-shadow 0.2s, transform 0.22s;
    }
    .paket-card.popular {
      border: 2.5px solid var(--red);
      box-shadow: 0 0 24px 6px var(--red), 0 0 18px 2px var(--blue);
    }
    .paket-card.popular::before {
      content: "Terpopuler";
      position: absolute; top: -1.6rem; left: 50%; transform: translateX(-50%);
      background: var(--red); color: var(--white);
      font-size: 0.83rem; font-weight: 700;
      border-radius: 1.1rem; padding: 0.21rem 1.3rem;
      box-shadow: 0 0 8px 1px var(--red);
      letter-spacing: 0.02em;
      z-index: 2;
    }
    .paket-card:hover, .paket-card:focus-within {
      box-shadow: 0 0 22px 4px var(--blue), 0 0 8px 2px var(--red);
      transform: translateY(-3px) scale(1.025);
    }
    .paket-card .paket-ico {
      font-size: 2.3rem; background: var(--blue); color: var(--black);
      border-radius: 50%; padding: 0.7rem; margin-bottom: 1.2rem;
      box-shadow: 0 0 12px 0 var(--blue), 0 0 0 2px var(--red);
      border: 2px solid var(--blue-dark);
    }
    .paket-card h3 {
      font-size: 1.17rem; font-weight: 700; color: var(--white); margin-bottom: 0.2rem;
    }
    .paket-card .paket-duration {
      color: #b0f3ff; font-family: var(--font-mono); margin-bottom: 0.7rem;
      font-size: 1.02rem;
    }
    .paket-card .paket-price {
      color: var(--blue); font-size: 2.05rem; font-family: var(--font-mono); font-weight: 700;
      margin-bottom: 0.2rem;
      text-shadow: 0 0 12px var(--blue);
    }
    .paket-card .paket-desc {
      color: #fff; font-size: 1.03rem; text-align: center; margin-bottom: 0.7rem;
      font-weight: 500;
    }
    .paket-card ul {
      list-style: none; margin: 0; padding: 0; margin-bottom: 1.1rem;
      color: #c6f5ff;
      text-align: left;
    }
    .paket-card ul li {
      margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.7rem;
      font-size: 1rem;
    }
    .paket-card ul li i { color: var(--blue); }
    .paket-card .btn-pesan {
      background: linear-gradient(90deg,var(--blue) 70%, var(--red) 100%);
      color: var(--black); font-weight: 700;
      padding: 0.7rem 2.1rem;
      border-radius: 1.1rem; font-size: 1.03rem;
      margin-top: 0.3rem;
      box-shadow: 0 0 16px var(--blue);
      border: none;
      cursor: pointer;
      transition: background 0.2s, color 0.2s, transform 0.17s;
    }
    .paket-card .btn-pesan:hover, .paket-card .btn-pesan:focus-visible {
      background: linear-gradient(90deg, var(--red) 50%, var(--blue) 100%);
      color: var(--white);
      transform: scale(1.05);
    }

    /* TESTIMONI */
    section#testimoni {
      padding: 4rem 0 2rem 0;
      background: linear-gradient(120deg, #10131a 80%, #1a2234 100%);
      border-top: 2px solid #25f0ff22;
    }
    .testi-title {
      text-align: center; font-size: 2.1rem;
      font-weight: 700; color: var(--blue); margin-bottom: 2.2rem;
    }
    .testi-grid {
      display: grid; grid-template-columns: 1fr;
      gap: 2.1rem;
    }
    @media (min-width: 900px) {
      .testi-grid { grid-template-columns: repeat(3, 1fr);}
    }
    .testi-card {
      background: var(--glass-bg);
      border-radius: var(--radius);
      box-shadow: 0 0 14px #25f0ff33;
      border: 1.5px solid #25f0ff22;
      padding: 1.6rem 1.2rem 1.2rem 1.2rem;
      display: flex; flex-direction: column;
      position: relative;
      min-height: 210px;
      transition: box-shadow 0.2s, transform 0.19s;
    }
    .testi-card:hover, .testi-card:focus-within {
      box-shadow: 0 0 16px 3px var(--blue), 0 0 8px 2px var(--red);
      transform: translateY(-3px) scale(1.025);
    }
    .testi-header {
      display: flex; align-items: center; gap: 1.1rem; margin-bottom: 0.9rem;
    }
    .testi-header img {
      width: 46px; height: 46px; border-radius: 50%; border: 2px solid var(--blue); object-fit: cover;
    }
    .testi-header .testi-meta {
      display: flex; flex-direction: column; gap: 0.2rem;
    }
    .testi-header .testi-name {
      font-size: 1.04rem; color: var(--blue); font-weight: 700;
    }
    .testi-header .testi-role {
      color: #b0f3ff; font-size: 0.95rem; font-weight: 500;
    }
    .testi-text {
      color: #d0eaff; font-size: 1.04rem; margin-bottom: 0.7rem;
      font-weight: 500;
    }
    .testi-stars {
      color: #ffcc33; font-size: 1.2rem; display: flex; gap: 0.1rem;
    }

    /* KONTAK */
    section#kontak {
      padding: 4rem 0 2rem 0;
      background: linear-gradient(100deg, #1a2234 70%, #10131a 100%);
      text-align: center;
      border-top: 2px solid #25f0ff22;
    }
    .kontak-title {
      font-size: 2.1rem; font-weight: 700; color: var(--blue); margin-bottom: 1.1rem;
    }
    .kontak-lead {
      color: #d0eaff; font-size: 1.13rem; margin-bottom: 2.1rem;
    }
    .kontak-btns {
      display: flex; flex-direction: column; align-items: center; gap: 1.3rem; margin-bottom: 2.5rem;
    }
    @media (min-width: 600px) {
      .kontak-btns { flex-direction: row; justify-content: center; }
    }
    .btn-wa, .btn-email {
      background: var(--blue); color: var(--black);
      font-family: var(--font-main); font-weight: 700;
      padding: 0.8rem 2.2rem; border-radius: 1rem;
      font-size: 1.13rem; box-shadow: 0 0 12px var(--blue-dark);
      border: none; cursor: pointer;
      display: flex; align-items: center; gap: 0.8rem; transition: background 0.2s, color 0.2s;
    }
    .btn-wa:hover, .btn-wa:focus-visible {
      background: var(--red); color: var(--white);
    }
    .btn-email {
      background: var(--glass-bg); color: var(--blue); border: 2px solid var(--blue);
    }
    .btn-email:hover, .btn-email:focus-visible {
      background: var(--blue); color: var(--black);
    }
    .kontak-info {
      margin: 0 auto; max-width: 380px; color: #b0f3ff; font-size: 1.03rem; text-align: left;
      margin-top: 2.2rem; border-radius: 1.2rem; background: #10131a99; padding: 1.2rem 1.6rem;
      box-shadow: 0 0 12px #25f0ff22;
    }
    .kontak-info strong { color: var(--red);}
    .kontak-info i { color: var(--blue); margin-right: 0.7rem;}
    .kontak-info p { margin: 0.4rem 0;}
    /* FAQ */
    section#faq {
      padding: 3rem 0 2rem 0;
      background: linear-gradient(100deg, #10131a 60%, #182b3e 100%);
    }
    .faq-title {
      text-align: center; font-size: 2.1rem; font-weight: 700; color: var(--blue); margin-bottom: 2rem;
    }
    .faq-list {
      max-width: 700px; margin: 0 auto;
    }
    .faq-item {
      margin-bottom: 1.3rem; background: var(--glass-bg); border-radius: 1.1rem; padding: 1.1rem 1.2rem;
      box-shadow: 0 0 10px #25f0ff22; color: #d0eaff; font-size: 1.07rem;
      transition: box-shadow 0.2s, background 0.2s;
    }
    .faq-item:hover, .faq-item:focus-within {
      box-shadow: 0 0 18px var(--blue);
      background: #181f2c;
    }
    /* RESPONSIVE */
    @media (max-width: 600px) {
      .container { width: 97%; }
      .hero { padding: 3.5rem 0 2rem 0;}
      section#fitur, section#keunggulan, section#paket, section#testimoni, section#kontak, section#faq { padding: 2.5rem 0 1.2rem 0;}
      .fitur-card, .keunggulan-card, .paket-card, .testi-card { padding: 1.3rem 0.7rem; min-height: unset;}
    }