/* --- Core System Variables & Reset --- */
        :root {
            --bg-main: #f7f8fc;
            --bg-card: #ffffff;
            --border-color: #e6e8f0;
            --text-primary: #0f172a;
            --text-secondary: #64748b;
            --accent: #1dbf73;
            --accent-hover: #16a569;
            --success: #34d399;
            --error: #ef4444;
            --error-bg: rgba(239, 68, 68, 0.1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }

        html, body {
            width: 100%;
            overflow-x: hidden;
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        /* --- Minimalist Navigation --- */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
            z-index: 1000;
        }

        .nav-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--text-primary);
            text-decoration: none;
        }

        .logo span {
            color: var(--accent);
        }

        /* --- Global Button Styling --- */
        .btn-started {
            background-color: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
            border-radius: 4px;
            padding: 8px 20px;
            font-weight: 700;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.2s ease;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .btn-started:hover {
            background-color: rgba(56, 189, 248, 0.1);
            transform: translateY(-1px);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-search {
            display: flex;
            align-items: center;
            width: 320px;
            max-width: 320px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 8px 10px;
            box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05);
            position: relative;
            transition: box-shadow 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
        }

        .header-search:focus-within {
            border-color: rgba(29, 191, 115, 0.4);
            box-shadow: 0 0 0 4px rgba(29, 191, 115, 0.12);
            transform: translateY(-1px);
        }

        .header-search input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            padding: 4px 6px;
            font-size: 14px;
            color: var(--text-primary);
        }

        .header-search input::placeholder {
            color: #94a3b8;
        }

        .header-search-toggle {
            display: none;
            border: none;
            background: transparent;
            color: var(--text-primary);
            width: 42px;
            height: 42px;
            cursor: pointer;
            font-size: 18px;
            padding: 0;
        }

        .header-search-toggle svg,
        .header-search-modal-close svg {
            width: 18px;
            height: 18px;
            stroke: currentColor;
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .header-search-results {
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            width: 100%;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            box-shadow: 0 16px 32px rgba(15, 23, 42, 0.08);
            overflow: hidden;
            display: none;
            z-index: 1200;
        }

        .header-search-results.active {
            display: block;
        }

        .header-search-result {
            display: block;
            padding: 12px 14px;
            text-decoration: none;
            color: var(--text-primary);
            border-bottom: 1px solid var(--border-color);
            transition: background-color 0.2s ease;
        }

        .header-search-result:last-child {
            border-bottom: none;
        }

        .header-search-result:hover {
            background: rgba(29, 191, 115, 0.08);
        }

        .header-search-result strong {
            display: block;
            font-size: 14px;
            margin-bottom: 2px;
        }

        .header-search-result span {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .header-search-empty, .header-search-loading {
            padding: 12px 14px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .header-search-loading {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .header-search-loader {
            width: 14px;
            height: 14px;
            border: 2px solid rgba(29, 191, 115, 0.2);
            border-top-color: var(--accent);
            border-radius: 50%;
            animation: headerSearchSpin 0.8s linear infinite;
        }

        @keyframes headerSearchSpin {
            to { transform: rotate(360deg); }
        }

        .header-search-modal {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.7);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            z-index: 2000;
            display: none;
            padding: 16px;
        }

        .header-search-modal.active {
            display: block;
        }

        .header-search-modal-inner {
            width: 100%;
            max-width: 560px;
            margin: 20px auto 0;
            background: var(--bg-card);
            border-radius: 20px;
            padding: 16px;
            box-shadow: 0 20px 40px rgba(15, 23, 42, 0.2);
        }

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

        .header-search-modal-input {
            flex: 1;
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 12px 14px;
            font-size: 15px;
            outline: none;
            color: var(--text-primary);
            background: var(--bg-main);
        }

        .header-search-modal-close {
            border: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
        }

        .header-search-modal-results {
            display: none;
            max-height: 70vh;
            overflow-y: auto;
        }

        .header-search-modal-results.active {
            display: block;
        }

        /* --- Structural Layout Containers --- */
        section {
            padding: 80px 24px;
            border-bottom: 1px solid var(--border-color);
            width: 100%;
        }

        .section-container {
            max-width: 1100px;
            margin: 0 auto;
            width: 100%;
        }

        .section-title {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--accent);
            margin-bottom: 16px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-title::after {
            content: '';
            flex-grow: 1;
            height: 1px;
            background: rgba(30, 41, 59, 0.5);
        }

        .section-heading {
            font-size: 32px;
            margin-bottom: 40px;
            font-weight: 600;
            letter-spacing: -0.5px;
        }

        /* --- Hero Section with Background & Actions --- */
        .hero {
            min-height: 90vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding-top: 120px;
            padding-bottom: 60px;
            background: linear-gradient(135deg, rgba(237, 253, 245, 0.95), rgba(241, 248, 255, 0.95));
            border-bottom: 1px solid var(--border-color);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 36px;
            align-items: center;
        }

        .hero-text {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            text-align: left;
        }

        .hero-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            background: rgba(29, 191, 115, 0.12);
            color: var(--accent);
            border: 1px solid rgba(29, 191, 115, 0.18);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .hero-text h1 {
            font-size: 48px; 
            font-weight: 700;
            line-height: 1.12;
            margin-bottom: 20px;
            letter-spacing: -1.2px;
            color: var(--text-primary);
        }

        .hero-text h1 span {
            color: var(--accent);
        }

        .hero-text p {
            font-size: 16px; 
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 24px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            justify-content: flex-start;
            align-items: center;
            width: 100%;
            max-width: 420px;
            margin-bottom: 20px;
        }

        .hero-btn {
            flex: 1;
            padding: 12px 20px;
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            border-radius: 999px;
            cursor: pointer;
            transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .hero-btn-primary {
            background-color: var(--accent);
            color: white;
            border: 1px solid var(--accent);
        }

        .hero-btn-primary:hover {
            background-color: var(--accent-hover);
            border-color: var(--accent-hover);
            transform: translateY(-2px);
        }

        .hero-btn-secondary {
            background-color: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }

        .hero-btn-secondary:hover {
            background-color: rgba(29, 191, 115, 0.08);
            border-color: rgba(29, 191, 115, 0.24);
            transform: translateY(-2px);
        }

        .hero-paynote {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 12px;
            border: 1px solid rgba(29, 191, 115, 0.18);
            background: rgba(29, 191, 115, 0.08);
            color: var(--accent);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .hero-search {
            display: flex;
            width: 100%;
            max-width: 460px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 8px;
            box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
            margin-bottom: 8px;
            position: relative;
            transition: box-shadow 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
        }

        .hero-search:focus-within {
            border-color: rgba(29, 191, 115, 0.4);
            box-shadow: 0 0 0 4px rgba(29, 191, 115, 0.12);
            transform: translateY(-1px);
        }

        .hero-search input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text-primary);
        }

        .hero-search input::placeholder {
            color: #94a3b8;
            transition: color 0.2s ease;
        }

        .hero-search:focus-within input::placeholder {
            color: #64748b;
        }

        .hero-search-results {
            width: 100%;
            max-width: 460px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            box-shadow: 0 16px 32px rgba(15, 23, 42, 0.08);
            margin-bottom: 18px;
            overflow: hidden;
            display: none;
        }

        .hero-search-results.active {
            display: block;
        }

        .hero-search-result {
            display: block;
            padding: 12px 14px;
            text-decoration: none;
            color: var(--text-primary);
            border-bottom: 1px solid var(--border-color);
            transition: background-color 0.2s ease;
        }

        .hero-search-result:last-child {
            border-bottom: none;
        }

        .hero-search-result:hover {
            background: rgba(29, 191, 115, 0.08);
        }

        .hero-search-result strong {
            display: block;
            font-size: 14px;
            margin-bottom: 2px;
        }

        .hero-search-result span {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .hero-search-empty {
            padding: 12px 14px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .hero-search-loading {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 14px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .hero-search-loader {
            width: 14px;
            height: 14px;
            border: 2px solid rgba(29, 191, 115, 0.2);
            border-top-color: var(--accent);
            border-radius: 50%;
            animation: heroSearchSpin 0.8s linear infinite;
        }

        @keyframes heroSearchSpin {
            to { transform: rotate(360deg); }
        }

        .hero-stats {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .hero-stats div {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stats strong {
            font-size: 16px;
            color: var(--text-primary);
        }

        .hero-stats span {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* --- About Architectural Section --- */
        .about-section {
            background-color: var(--bg-card);
        }

        .about-text-block {
            max-width: 800px;
            margin-bottom: 48px;
        }

        .about-text-block p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        .architecture-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .arch-card {
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 6px;
            transition: border-color 0.2s ease, transform 0.2s ease;
        }

        .arch-card:hover {
            border-color: #334155;
            transform: translateY(-2px);
        }

        .arch-card h3 {
            font-size: 15px;
            color: var(--text-primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .arch-card h3::before {
            content: '//';
            color: var(--accent);
        }

        .arch-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* --- Capabilities Grid Section --- */
        .capabilities-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
        }

        .cap-item {
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 12px;
            background-color: #ffffff;
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .cap-item:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
        }

        .cap-header {
            display: flex;
            justify-content: space-between;
            font-size: 11px;
            color: var(--accent);
            margin-bottom: 14px;
            font-weight: 700;
        }

        .cap-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .cap-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .cap-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 16px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .cap-footer strong {
            color: var(--text-primary);
            font-size: 13px;
        }

        /* --- Pipeline / How it Works Section --- */
        .pipeline-section {
            background-color: var(--bg-card);
        }

        .pipeline-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }

        .pipe-step {
            position: relative;
        }

        .step-number {
            font-size: 36px;
            font-weight: 800;
            color: rgba(56, 189, 248, 0.15);
            line-height: 1;
            margin-bottom: 12px;
        }

        .pipe-step h3 {
            font-size: 15px;
            margin-bottom: 8px;
        }

        .pipe-step p {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* --- Parameters Section --- */
        .parameters-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

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

        .param-list li {
            font-size: 13px;
            color: var(--text-secondary);
            padding-left: 24px;
            position: relative;
        }

        .param-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--success);
            font-weight: bold;
        }

        .param-list strong {
            color: var(--text-primary);
        }

        /* --- Global Identity Auth Modal Layer --- */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(7, 10, 18, 0.8);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            z-index: 2000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .modal-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .modal-wrapper {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            width: 100%;
            max-width: 440px;
            border-radius: 8px;
            padding: 36px;
            position: relative;
            transform: scale(0.95);
            transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
        }

        .modal-overlay.active .modal-wrapper {
            transform: scale(1);
        }

        .modal-close {
            position: absolute;
            top: 20px;
            right: 20px;
            background: transparent;
            border: none;
            color: var(--text-secondary);
            font-size: 20px;
            cursor: pointer;
            line-height: 1;
            transition: color 0.2s ease;
        }

        .modal-close:hover {
            color: var(--accent);
        }

        .modal-header {
            margin-bottom: 24px;
        }

        .modal-header h2 {
            font-size: 22px;
            font-weight: 600;
            letter-spacing: -0.5px;
            margin-bottom: 6px;
        }

        .modal-header p {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-label {
            display: block;
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--accent);
            margin-bottom: 8px;
            font-weight: 700;
        }

        .form-input {
            width: 100%;
            background-color: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 4px;
            padding: 12px 16px;
            color: var(--text-primary);
            font-size: 13px;
            transition: border-color 0.2s ease, outline 0.2s ease;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--accent);
        }

        .form-input:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        .form-actions {
            margin-top: 28px;
        }

        .btn-submit {
            width: 100%;
            background-color: var(--accent);
            color: #0f172a;
            border: none;
            border-radius: 4px;
            padding: 14px;
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            cursor: pointer;
            transition: background-color 0.2s ease, opacity 0.2s ease;
        }

        .btn-submit:hover:not(:disabled) {
            background-color: var(--accent-hover);
        }

        .btn-submit:disabled {
            opacity: 0.5;
            cursor: wait;
        }

        /* Post-Form Server Validation Feedback Banner */
        .auth-error-banner {
            background-color: var(--error-bg);
            border: 1px solid rgba(239, 104, 104, 0.25);
            color: var(--error);
            font-size: 12px;
            padding: 11px 14px;
            border-radius: 4px;
            margin-top: 20px;
            display: none;
            align-items: center;
            animation: fadeIn 0.2s ease;
        }

        .modal-footer-toggle {
            text-align: center;
            margin-top: 20px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .modal-footer-toggle span {
            color: var(--accent);
            cursor: pointer;
            text-decoration: underline;
        }

        /* --- Global Footer System --- */
        .site-footer {
            padding: 48px 24px 40px;
            text-align: center;
            font-size: 13px;
            color: var(--text-secondary);
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.96), rgba(2, 8, 23, 1));
            border-top: 1px solid rgba(148, 163, 184, 0.16);
        }

        .footer-container {
            max-width: 960px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }

        .footer-brand {
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 0.24em;
            text-transform: uppercase;
            color: #f8fafc;
        }

        .footer-description {
            max-width: 640px;
            margin: 0;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 18px;
            margin-top: 2px;
        }

        .footer-links a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.2s ease;
            font-weight: 600;
        }

        .footer-links a:hover {
            color: #7dd3fc;
            text-decoration: underline;
        }

        .footer-copyright {
            color: #94a3b8;
            font-size: 12px;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-4px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* --- Comprehensive Responsiveness & Adaptive Media Queries --- */
        @media (max-width: 1024px) {
            .hero-text h1 {
                font-size: 44px;
            }
            section {
                padding: 60px 24px;
            }
        }

        @media (max-width: 768px) {
            .header-search {
                display: none;
            }

            .site-footer {
                padding: 40px 18px 32px;
            }

            .footer-description {
                font-size: 12px;
            }

            .footer-links {
                gap: 14px;
            }

            .header-search-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .hero {
                padding-top: 100px;
            }
            
            .hero-grid {
                grid-template-columns: 1fr;
            }

            .hero-text {
                align-items: center;
                text-align: center;
            }
            
            .hero-text h1 {
                font-size: 36px;
                letter-spacing: -1px;
            }
            
            .hero-text p {
                font-size: 15px;
                margin-bottom: 32px;
            }

            .hero-search {
                border-radius: 16px;
            }

            .hero-actions {
                flex-direction: column;
                gap: 12px;
                width: 100%;
            }

            .hero-btn {
                width: 100%;
            }

            .hero-panel {
                justify-content: center;
            }

            .parameters-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .section-heading {
                font-size: 26px;
                margin-bottom: 30px;
            }
            
            .modal-wrapper {
                padding: 28px 20px;
            }
        }

        @media (max-width: 480px) {
            .hero-text h1 {
                font-size: 30px;
            }
            .nav-container {
                padding: 0 16px;
            }
            .btn-started {
                padding: 6px 14px;
                font-size: 11px;
            }
            section {
                padding: 48px 16px;
            }
        }