/* CRITICAL & SYSTEM RESET */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        :root {
            --bg-main: #060907;
            --bg-card: rgba(13, 18, 15, 0.65);
            --bg-card-solid: #0d120f;
            --bg-input: rgba(12, 22, 16, 0.7);
            --primary-green: #00e676;
            --primary-glow: rgba(0, 230, 118, 0.25);
            --accent-cyan: #00f2fe;
            --accent-purple: #8a2be2;
            --accent-orange: #ff5252;
            --text-white: #ffffff;
            --text-gray: #a0aec0;
            --text-subtle: #5f7065;
            --border-subtle: rgba(255, 255, 255, 0.07);
            --border-active: #00e676;
            --radius-main: 16px;
            --radius-btn: 999px;
            --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
            --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--bg-main);
            color: var(--text-white);
            font-family: var(--font-family);
            font-size: 16px;
            overflow-x: hidden;
        }

        body {
            background-color: var(--bg-main);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            position: relative;
            min-height: 100vh;
        }

        /* ATMOSPHERIC BACKGROUND GLOWS */
        .glow-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            pointer-events: none;
            z-index: 0;
            overflow: hidden;
        }

        .glow-top-center {
            position: absolute;
            top: -150px;
            left: 50%;
            transform: translateX(-50%);
            width: 900px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 230, 118, 0.12) 0%, rgba(0, 242, 254, 0.05) 40%, rgba(6, 9, 7, 0) 70%);
            border-radius: 50%;
            filter: blur(80px);
        }

        .glow-mid-left {
            position: absolute;
            top: 35%;
            left: -200px;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(0, 230, 118, 0.08) 0%, rgba(6, 9, 7, 0) 70%);
            border-radius: 50%;
            filter: blur(100px);
        }

        .glow-bottom-right {
            position: absolute;
            bottom: 10%;
            right: -200px;
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(0, 230, 118, 0.09) 0%, rgba(6, 9, 7, 0) 70%);
            border-radius: 50%;
            filter: blur(100px);
        }

        /* CONTAINER */
        .container {
            max-width: 980px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        /* HEADER / NAVIGATION */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 20px 0;
            transition: var(--transition-smooth);
        }

        header.scrolled {
            background: rgba(6, 9, 7, 0.88);
            backdrop-filter: blur(16px);
            padding: 14px 0;
            border-bottom: 1px solid var(--border-subtle);
        }

        .nav-container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: auto 1fr auto;
            align-items: center;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text-white);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            z-index: 1001;
        }

        .nav-menu {
            display: contents;
        }

        .nav-links {
            display: flex;
            gap: 36px;
            list-style: none;
            align-items: center;
            justify-self: center;
        }

        .nav-links a {
            font-size: 0.9rem;
            color: var(--text-gray);
            text-decoration: none;
            transition: var(--transition-smooth);
            font-weight: 500;
        }

        .nav-links a:hover {
            color: var(--text-white);
        }

        .btn-header {
            background: var(--primary-green);
            color: #04120a;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 0.85rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 20px rgba(0, 230, 118, 0.25);
            justify-self: end;
        }

        .btn-header:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(0, 230, 118, 0.45);
            background: #00ff84;
        }

        /* HAMBURGER BUTTON */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: space-between;
            width: 26px;
            height: 18px;
            background: transparent;
            border: none;
            cursor: pointer;
            z-index: 1001;
            padding: 0;
            justify-self: end;
        }

        .hamburger span {
            width: 100%;
            height: 2px;
            background-color: var(--text-white);
            border-radius: 2px;
            transition: var(--transition-smooth);
        }

        .hamburger.is-active span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }

        .hamburger.is-active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.is-active span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }

        /* HERO SECTION */
        .hero {
            padding-top: 150px;
            padding-bottom: 60px;
            text-align: center;
        }

        .hero-title {
            font-size: 3.25rem;
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -1.2px;
            background: linear-gradient(135deg, #ffffff 30%, var(--primary-green) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-gray);
            max-width: 720px;
            margin: 0 auto 50px auto;
            line-height: 1.6;
            font-weight: 400;
        }

        /* FIT COMPARISON GRID */
        .fit-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-bottom: 90px;
        }

        .fit-card {
            background: rgba(13, 18, 15, 0.5);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-main);
            padding: 32px 28px;
            text-align: left;
            backdrop-filter: blur(10px);
            transition: var(--transition-smooth);
        }

        .fit-card:hover {
            border-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-3px);
        }

        .fit-header {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 24px;
        }

        .fit-header.good { color: #ffffff; }
        .fit-header.not { color: #ffffff; }

        .fit-header .spark {
            font-size: 1rem;
        }
        .fit-header.good .spark { color: var(--primary-green); }
        .fit-header.not .spark { color: #ff6b6b; }

        .fit-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .fit-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.88rem;
            color: var(--text-gray);
            line-height: 1.55;
        }

        .fit-list li .icon {
            font-weight: 800;
            font-size: 0.95rem;
            flex-shrink: 0;
            margin-top: 1px;
        }

        .fit-list.good .icon { color: var(--primary-green); }
        .fit-list.not .icon { color: #ff5252; }

        /* FORM SECTION STYLING */
        .form-title-container {
            text-align: center;
            margin-bottom: 50px;
        }

        .form-main-title {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.8px;
        }

        .form-badge {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: #00e676;
            background: rgba(43, 226, 98, 0.12);
            border: 1px solid rgba(43, 226, 159, 0.3);
            padding: 6px 16px;
            border-radius: 999px;
        }

        .form-card {
            background: rgba(10, 15, 12, 0.75);
            border: 1px solid var(--border-subtle);
            border-radius: 20px;
            padding: 40px;
            backdrop-filter: blur(16px);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            margin-bottom: 40px;
        }

        .form-step {
            margin-bottom: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-subtle);
        }

        .form-step:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .step-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
        }

        .step-num {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--primary-green);
        }

        .step-title {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .step-badge {
            display: block;
            font-size: 0.68rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--primary-green);
            margin-bottom: 24px;
            opacity: 0.85;
        }

        /* INPUT FIELDS */
        .input-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 28px;
        }

        .input-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .input-group label {
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--text-gray);
        }

        .input-control {
            background: var(--bg-input);
            border: 1px solid var(--border-subtle);
            border-radius: 10px;
            padding: 14px 18px;
            color: var(--text-white);
            font-family: var(--font-family);
            font-size: 0.9rem;
            outline: none;
            transition: var(--transition-smooth);
        }

        .input-control::placeholder {
            color: rgba(160, 174, 192, 0.4);
        }

        .input-control:focus {
            border-color: var(--primary-green);
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
            background: rgba(15, 28, 20, 0.85);
        }

        textarea.input-control {
            resize: vertical;
            min-height: 100px;
        }

        /* QUESTION BLOCK */
        .question-block {
            margin-top: 28px;
        }

        .question-label {
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--text-gray);
            margin-bottom: 16px;
            display: block;
        }

        /* CUSTOM RADIO & CHECKBOX OPTIONS */
        .options-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 14px;
        }

        .options-grid.cols-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .options-grid.cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }

        .options-grid.stacked {
            grid-template-columns: 1fr;
        }

        .custom-option {
            position: relative;
            cursor: pointer;
            user-select: none;
        }

        .custom-option input {
            position: absolute;
            opacity: 0;
            cursor: pointer;
            height: 0;
            width: 0;
        }

        .option-box {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(14, 22, 17, 0.5);
            border: 1px solid var(--border-subtle);
            border-radius: 10px;
            padding: 14px 18px;
            transition: var(--transition-smooth);
            font-size: 0.88rem;
            color: var(--text-white);
            font-weight: 500;
        }

        .custom-option:hover .option-box {
            border-color: rgba(0, 230, 118, 0.4);
            background: rgba(18, 30, 23, 0.7);
        }

        .indicator {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: var(--transition-smooth);
        }

        .indicator.checkbox-ind {
            border-radius: 4px;
        }

        .indicator::after {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary-green);
            transform: scale(0);
            transition: var(--transition-smooth);
        }

        .indicator.checkbox-ind::after {
            border-radius: 1px;
            width: 9px;
            height: 9px;
        }

        .custom-option input:checked ~ .option-box {
            border-color: var(--primary-green);
            background: rgba(0, 230, 118, 0.08);
            box-shadow: 0 0 15px rgba(0, 230, 118, 0.1);
        }

        .custom-option input:checked ~ .option-box .indicator {
            border-color: var(--primary-green);
        }

        .custom-option input:checked ~ .option-box .indicator::after {
            transform: scale(1);
        }

        /* SUBMIT BUTTON SECTION */
        .submit-container {
            text-align: center;
            margin-top: 50px;
            margin-bottom: 90px;
        }

        .btn-submit {
            background: var(--primary-green);
            color: #04120a;
            border: none;
            padding: 18px 42px;
            border-radius: var(--radius-btn);
            font-size: 1.05rem;
            font-weight: 800;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 8px 30px rgba(0, 230, 118, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-submit:hover {
            background: #00ff84;
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 40px rgba(0, 230, 118, 0.55);
        }

        .btn-submit:active {
            transform: translateY(-1px);
        }

        /* FOOTER */
        footer {
            border-top: 1px solid var(--border-subtle);
            padding: 40px 0;
            background: #040605;
        }

        .footer-container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-subtle);
        }

        .footer-brand {
            font-weight: 800;
            color: var(--text-white);
            font-size: 1rem;
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }

        /* REVEAL ANIMATIONS */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
            will-change: opacity, transform;
        }

        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }

        .stagger-1 { transition-delay: 0.1s; }
        .stagger-2 { transition-delay: 0.2s; }
        .stagger-3 { transition-delay: 0.3s; }

        /* RESPONSIVE DESIGN BREAKPOINTS */
        @media (max-width: 868px) {
            .hero-title { font-size: 2.5rem; }
            .fit-grid { grid-template-columns: 1fr; }
            .input-grid { grid-template-columns: 1fr; }
            .options-grid.cols-3, .options-grid.cols-2 { grid-template-columns: 1fr; }
            .form-card { padding: 24px 20px; }

            .nav-container {
                display: flex;
                justify-content: space-between;
            }

            /* HAMBURGER MENU MOBILE STYLES */
            .hamburger {
                display: flex;
            }

            .nav-menu {
                position: fixed;
                top: 0;
                right: -100%;
                width: 100%;
                max-width: 320px;
                height: 100vh;
                background: rgba(6, 9, 7, 0.98);
                backdrop-filter: blur(20px);
                display: flex;
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 32px;
                padding: 40px;
                transition: var(--transition-smooth);
                border-left: 1px solid var(--border-subtle);
                box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
                z-index: 1000;
            }

            .nav-menu.is-open {
                right: 0;
            }

            .nav-links {
                flex-direction: column;
                gap: 24px;
                text-align: center;
                justify-self: auto;
            }

            .nav-links a {
                font-size: 1.1rem;
            }

            .btn-header {
                width: 100%;
                padding: 14px 24px;
                font-size: 0.95rem;
                justify-self: auto;
            }
        }

        @media (max-width: 480px) {
            .hero-title { font-size: 2rem; }
            .btn-submit { width: 100%; justify-content: center; padding: 16px 20px; font-size: 0.95rem; }
            .footer-container { flex-direction: column; gap: 20px; text-align: center; }
        }

        @media (prefers-reduced-motion: reduce) {
            .reveal, .btn-submit, .fit-card, .btn-header {
                transition: none !important;
                transform: none !important;
                opacity: 1 !important;
            }
        }