:root {
        --neon: #00ffd5;
        --bg: #05070a;
        --fg: #fff;
        --muted: #a0b0b8;
      }

      * {
        box-sizing: border-box;
      }

      html,
      body {
        height: 100%;
        /* background: #000; */
      }

      body {
        margin: 0;
        background: var(--bg);
        color: var(--fg);
        font-family: "Poppins", sans-serif;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;

        overflow-x: hidden;
      }
      /* header */
      .gk-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 72px;
        background: linear-gradient(
          180deg,
          rgba(0, 0, 0, 0.55),
          rgba(0, 0, 0, 0)
        );
        display: flex;
        align-items: center;
        z-index: 50;
        padding: 0 2rem;
        backdrop-filter: blur(6px);
      }

      .gk-header .brand {
        display: flex;
        align-items: center;
        gap: 12px;
      }

      .gk-header .slash {
        width: 4px;
        height: 36px;
        background: #14f1d9;
        border-radius: 2px;
        filter: drop-shadow(0 0 6px rgba(20, 241, 217, 0.7));
      }

      .gk-logo {
        height: 48px;
        filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.4));
      }

      .gk-header .tagline {
        color: #cfd6d4;
        font-size: 0.8rem;
        letter-spacing: 0.25em;
        text-transform: uppercase;
        font-weight: 500;
      }

      .lang-select {
        pointer-events: auto;
      }

      .lang-btn {
        background: rgba(255, 255, 255, 0.05);
        color: #fff;
        border: none;
        padding: 4px 10px;
        border-radius: 6px;
        font-size: 0.85rem;
        font-weight: 500;
        cursor: pointer;
        transition: background 0.3s ease;
      }

      .lang-btn:hover {
        background: rgba(255, 255, 255, 0.12);
      }

      /* Responsive */
      @media (max-width: 768px) {
        ol, ul {
            padding-left: 0rem;
        }
        .gk-logo {
          height: 36px;
        }
        .gk-header {
          height: 60px;
          padding: 0 1rem;
          box-shadow: 0 0 8px #14f1d9, 0 0 20px rgba(20, 241, 217, 0.6);
        }
        .gk-header .tagline {
          display: none;
        }
      }
      /* Header */

      .hero {
        position: relative;
        height: 100svh;
        overflow: hidden;
        isolation: isolate;
      }

     

      /* teal tint + vignette for cinema look */
      .hero::after {
        content: "";
        position: absolute;
        inset: 0;
        z-index: 1;
        background: radial-gradient(
            1200px 600px at 50% 80%,
            rgba(0, 255, 213, 0.08) 0%,
            rgba(0, 0, 0, 0) 55%,
            rgba(0, 0, 0, 0.45) 100%
          ),
          linear-gradient(to bottom, rgba(0, 0, 0, 0.35), rgba(0, 0, 0, 0.55));
        mix-blend-mode: screen;
        pointer-events: none;
      }

      /* Optional subtle particles on top of the image */
      #ocean {
        position: absolute;
        inset: 0;
        z-index: 2;
        display: block;
        opacity: 0.5;
      }

      .title-left {
        position: absolute;
        top: 12vh;
        left: 6vw;
        z-index: 4;
        max-width: min(48ch, 44vw);
      }

      .title-right {
        position: absolute;
        bottom: 18vh;
        right: 6vw;
        z-index: 4;
        text-align: right;
        max-width: 46vw;
      }

      .tag {
        letter-spacing: 0.28em;
        text-transform: uppercase;
        color: var(--muted);
        font-size: 0.8rem;
      }

      .title-left h1,
      .title-right h1 {
        /* text-align: left;
        font-weight: 400;
        line-height: 1.05;
        letter-spacing: -0.015em;
        text-shadow: 0 0 20px rgba(0, 255, 213, 0.08); */
        text-align: left;
        font-size: clamp(28px, 3.2vw + 10px, 64px);
        font-weight: 300;
        line-height: 1.12;
        letter-spacing: -0.02em;
      }

      .title-left h1 {
        font-size: clamp(1.8rem, 3vw + 1rem, 3.6rem);
      }

      .title-right h1 {
        font-size: clamp(1.6rem, 2.6vw + 1rem, 3rem);
      }

      .prism-wrap {
        position: absolute;
        inset: 0;
        display: grid;
        place-items: center;
        z-index: 3;
        pointer-events: none;
      }

      svg#prism {
        width: min(24vmin, 260px);
        filter: drop-shadow(0 0 16px rgba(0, 255, 213, 0.65))
          drop-shadow(0 0 36px rgba(0, 255, 213, 0.35));
      }

      #prism path {
        fill: none;
        stroke: var(--neon);
        stroke-width: 6;
        vector-effect: non-scaling-stroke;
        stroke-linejoin: round;
        stroke-linecap: round;
      }

      .ripple {
        position: absolute;
        width: 40vmin;
        aspect-ratio: 1;
        border-radius: 50%;
        box-shadow: 0 0 120px 20px rgba(20, 215, 183, 0.18) inset,
          0 0 150px 30px rgba(0, 255, 213, 0.14);
        z-index: 2;
      }

      .bottom-bar {
        position: absolute;
        bottom: 18px;
        left: 50%;
        translate: -50% 0;
        z-index: 5;
        background: rgb(5 8 12 / 10%);
        backdrop-filter: blur(8px);
        border: 1px solid rgba(255, 255, 255, 0.06);
        border-radius: 18px;
        padding: 5px 15px;
      }

        .cp-input:focus,
        .cp-textarea:focus,
        .cp-select:focus {
        outline: none;
        border-color: #0fe3cb;
        color: #0d1b1a;
        box-shadow: 0 0 0 4px rgba(15, 227, 203, 0.18);
        background-color: #fff; /* opsionale */
        }


      .bottom-bar .nav-link {
        color: #dfe6ea;
        font-weight: 400;
        padding: 0.45rem 0.9rem;
        border-radius: 4px;
      }

      .bottom-bar .nav-link.active,
      .bottom-bar .nav-link:hover {
          color: #fff;
          border-bottom: solid #14f1d9;
          box-shadow: 0px 3px 0px rgb(0 255 213 / 22%), 0 0 0px rgb(0 0 0);
       }

      .scroll-cue {
        position: absolute;
        right: 12px;
        bottom: 36px;
        writing-mode: vertical-rl;
        text-orientation: mixed;
        color: #9fb9b2;
        font-size: 0.75rem;
        letter-spacing: 0.25em;
        z-index: 4;
        opacity: 0.85;
      }

      .scroll-dot {
        position: absolute;
        right: 10px;
        bottom: 18px;
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--neon);
        box-shadow: 0 0 10px var(--neon), 0 0 30px var(--neon);
        animation: blink 1.6s ease-in-out infinite;
        z-index: 4;
      }

      @keyframes blink {
        0%,
        100% {
          opacity: 0.35;
        }

        50% {
          opacity: 1;
        }
      }

      @media (max-width: 992px) {
        .title-right {
          right: 5vw;
          left: 5vw;
          text-align: left;
          bottom: 14vh;
        }
        button.lang-btn {
            display: none;
        }
        .contact-panel {
            left: 50% !important;
        }
        .title-right h1 {
          max-width: 80vw;
        }

        .title-left {
          left: 4vw;
          top: 12vh;
          max-width: 86vw;
        }

        .bottom-bar {
          display: none;
          scale: 0.92;
        }
      }
      .topbar img {
        height: 40px;
      }

    
      .section-label {
        display: flex;
        align-items: center;
        gap: 12px;
      }
      .section-label::before {
        content: "";
        width: 32px;
        height: 2px;
        background: #14f1d9;
        border-radius: 2px;
        box-shadow: 0 0 8px #14f1d9, 0 0 20px rgba(20, 241, 217, 0.6);
      }

      /* ========== CONTACT MODAL (custom) ========== */
      body.modal-open {
        overflow: hidden;
      }
      .contact-modal {
        position: fixed;
        inset: 0;
        z-index: 100;
        display: none;
      }
      .contact-modal.is-open {
        display: block;
      }
      .contact-backdrop {
        position: absolute;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(6px);
        animation: fadeIn 0.15s ease;
      }
      @keyframes fadeIn {
        from {
          opacity: 0;
        }
        to {
          opacity: 1;
        }
      }
      .contact-panel {
        position: absolute;
        left: 70%;
        top: 50%;
        transform: translate(-50%, -50%);
        width: min(92vw, 980px);
        background: #fff;
        color: #0d1b1a;
        border-radius: 16px;
        box-shadow: 0 30px 120px rgba(0, 0, 0, 0.4);
        padding: 24px 24px 20px;
        max-height: min(92vh, 860px);
        overflow: auto;
      }
      @media (min-width: 768px) {
        .contact-panel {
          padding: 32px 36px 28px;
        }
      }
      .cp-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 18px;
      }
      .cp-title {
        color: #00998f;
        font-weight: 400;
        letter-spacing: 0.2px;
        font-size: clamp(22px, 1.6vw + 12px, 32px);
      }
      .cp-close {
          border: solid #14f1d9;
          background: #0fe3cb7d;
          width: 40px;
          height: 40px;
          border-radius: 50%;
          display: grid;
          place-items: center;
          cursor: pointer;
      }
      .cp-close:hover {
        background: #e9f1f0;
      }
      .cp-grid {
        display: grid;
        gap: 18px;
      }
      @media (min-width: 992px) {
        .cp-grid {
          grid-template-columns: 1fr;
        }
        div#menu {
            display: none;
        }
      } 

      /* sections */
      .cp-section {
        padding: 8px 0 2px;
      }
      .cp-label {
        color: #00b59f;
        font-weight: 400;
        margin-bottom: 10px;
        font-size: 0.95rem;
      }
      .pillset {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
      }
      .pill {
        border: 1px solid #e3e9e8;
        border-radius: 999px;
        padding: 10px 14px;
        background: #fff;
        color: #0d1b1a;
        font-weight: 500;
        font-size: 0.92rem;
        cursor: pointer;
        transition: 0.15s;
      }
      .pill:hover {
        border-color: #cdd9d7;
      }
      .pill.is-active {
        /* background: #0fe3cb; */
        color: #0d1b1a;
        border-color: #0fe3cb;
        box-shadow: 0 0 0 4px rgba(15, 227, 203, 0.18);
      }

      .cp-input:focus-visible, .cp-select:focus-visible, .cp-textarea:focus-visible {
        /* background: #0fe3cb; */
        color: #0d1b1a;
        border: #0fe3cb;
        box-shadow: 0 0 0 4px rgba(15, 227, 203, 0.18);
      }
      
      .pill[aria-disabled="true"] {
        opacity: 0.45;
        cursor: not-allowed;
      }

      .cp-row {
        display: grid;
        gap: 12px;
      }
      @media (min-width: 768px) {
        .cp-row.cols-3 {
          grid-template-columns: repeat(3, 1fr);
        }
        .cp-row.cols-2 {
          grid-template-columns: repeat(2, 1fr);
        }

      }
      .cp-input,
      .cp-select,
      .cp-textarea {
        width: 100%;
        border: 1px solid #e3e9e8;
        border-radius: 12px;
        padding: 12px 14px;
        background: #fff;
        color: #0d1b1a;
        font-size: 0.95rem;
      }
      .cp-input::placeholder,
      .cp-textarea::placeholder {
        color: #9ab4b1;
      }
      .cp-textarea {
        min-height: 120px;
        resize: vertical;
      }
      .cp-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        margin-top: 14px;
      }
      .cp-inline {
        display: flex;
        align-items: center;
        gap: 10px;
        color: #3a5754;
        font-size: 0.95rem;
      }
      .cp-send {
        border: 0;
        background: #00e6cc;
        color: #00110f;
        font-weight: 400;
        letter-spacing: 0.6px;
        border-radius: 12px;
        padding: 12px 18px;
        min-width: 120px;
        cursor: pointer;
      }
      .cp-send:hover {
        filter: brightness(0.95);
      }
      .cp-note {
        text-align: center;
        color: #5a7673;
        font-size: 0.92rem;
      }
      .cp-email {
        color: #00a896;
        text-decoration: none;
        font-weight: 600;
      }
      .visually-hidden {
        position: absolute !important;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
      }