*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        :root {
            --black: #000000;
            --white: #ffffff;
            --off-white: #f0f0ed;
            --grey-1: #e8e8e4;
            --grey-2: #c4c4be;
            --grey-3: #888880;
            --grey-4: #444440;
            --grey-5: #1e1e1a;
            --grey-6: #111110;
            --accent: #ffffff;
            --success: #b8ffb0;
            --danger: #ffb0b0;
            --warn: #ffe8a0;
            --border: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.18);
            --mono: 'IBM Plex Mono', monospace;
            --display: 'Syne', sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--black);
            color: var(--white);
            font-family: var(--display);
            min-height: 100vh;
            overflow-x: hidden;
            cursor: default;
            display: flex;
            flex-direction: column;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image:
                radial-gradient(circle at 15% 25%, rgba(255, 255, 255, 0.025) 0%, transparent 50%),
                radial-gradient(circle at 85% 75%, rgba(255, 255, 255, 0.015) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .noise {
            position: fixed;
            inset: 0;
            opacity: 0.03;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
            pointer-events: none;
            z-index: 1;
        }

        .scanlines {
            position: fixed;
            inset: 0;
            background: repeating-linear-gradient(0deg,
                    transparent,
                    transparent 2px,
                    rgba(0, 0, 0, 0.03) 2px,
                    rgba(0, 0, 0, 0.03) 4px);
            pointer-events: none;
            z-index: 1;
        }

        /* Top Navigation Bar */
        .top-nav {
            position: relative;
            z-index: 100;
            padding: 20px 32px 0 32px;
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px 40px;
            background: rgba(15, 15, 15, 0.85);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-strong);
            border-radius: 16px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 48px;
            list-style: none;
        }

        .nav-link {
            font-family: var(--mono);
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.02em;
            color: var(--grey-3);
            text-decoration: none;
            transition: color 0.2s ease;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
        }

        .nav-link svg {
            flex-shrink: 0;
            opacity: 0.7;
            transition: opacity 0.2s ease;
            width: 16px;
            height: 16px;
        }

        .nav-link:hover {
            color: var(--white);
        }

        .nav-link:hover svg {
            opacity: 1;
        }

        .nav-link.active {
            color: var(--white);
        }

        .nav-link.active svg {
            opacity: 1;
        }

        .shell {
            position: relative;
            z-index: 2;
            max-width: 600px;
            width: 100%;
            margin: 0 auto;
            padding: 60px 24px 80px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .status-pill {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 6px 12px;
            border: 1px solid var(--border-strong);
            border-radius: 100px;
            font-family: var(--mono);
            font-size: 9px;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            color: var(--grey-3);
            margin-bottom: 32px;
        }

        .status-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--success);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {

            0%,
            100% {
                opacity: 1;
            }

            50% {
                opacity: 0.3;
            }
        }

        .hero {
            margin-bottom: 48px;
            text-align: center;
        }

        .hero-eyebrow {
            font-family: var(--mono);
            font-size: 10px;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--grey-3);
            margin-bottom: 16px;
        }

        .hub-identity {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 18px;
            margin-bottom: 12px;
        }

        .hub-glyph {
            width: 52px;
            height: 52px;
            border: 1px solid var(--border-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--mono);
            font-size: 22px;
            font-weight: 600;
            color: var(--white);
            flex-shrink: 0;
            position: relative;
        }

        .hub-glyph::before {
            content: '';
            position: absolute;
            inset: 3px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        .hub-title {
            font-family: var(--display);
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1;
            text-transform: uppercase;
        }

        .hub-meta {
            font-family: var(--mono);
            font-size: 11px;
            color: var(--grey-3);
            letter-spacing: 0.04em;
        }

        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
            margin: 40px 0;
        }

        .progress-section {
            margin-bottom: 32px;
        }

        .progress-header {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            margin-bottom: 10px;
        }

        .progress-label-text {
            font-family: var(--mono);
            font-size: 9px;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--grey-3);
        }

        .progress-fraction {
            font-family: var(--mono);
            font-size: 11px;
            font-weight: 600;
            color: var(--white);
        }

        .progress-track {
            height: 2px;
            background: rgba(255, 255, 255, 0.06);
            position: relative;
            overflow: visible;
        }

        .progress-fill {
            height: 100%;
            background: var(--white);
            transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
            position: relative;
        }

        .progress-fill::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            background: var(--white);
            border-radius: 50%;
            transition: opacity 0.3s;
        }

        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .step-row {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 20px;
            border: 1px solid transparent;
            transition: all 0.2s ease;
            position: relative;
        }

        .step-row.is-done {
            background: rgba(184, 255, 176, 0.04);
            border-color: rgba(184, 255, 176, 0.12);
        }

        .step-row.is-active {
            background: rgba(255, 255, 255, 0.04);
            border-color: var(--border-strong);
        }

        .step-row.is-active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--white);
        }

        .step-row.is-locked {
            opacity: 0.28;
        }

        .step-index {
            font-family: var(--mono);
            font-size: 11px;
            font-weight: 600;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            border: 1px solid var(--border-strong);
            color: var(--grey-3);
        }

        .step-row.is-done .step-index {
            border-color: rgba(184, 255, 176, 0.3);
            color: var(--success);
            font-size: 14px;
        }

        .step-row.is-active .step-index {
            border-color: var(--white);
            color: var(--white);
        }

        .step-text {
            flex: 1;
        }

        .step-name {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.01em;
            margin-bottom: 2px;
        }

        .step-hint {
            font-family: var(--mono);
            font-size: 9px;
            letter-spacing: 0.08em;
            color: var(--grey-3);
            text-transform: uppercase;
        }

        .step-btn {
            padding: 8px 16px;
            font-family: var(--mono);
            font-size: 10px;
            font-weight: 600;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            cursor: pointer;
            border: none;
            outline: none;
            transition: all 0.15s ease;
            white-space: nowrap;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .step-btn.is-start {
            background: var(--white);
            color: var(--black);
        }

        .step-btn.is-start:hover {
            background: var(--grey-1);
        }

        .step-btn.is-done {
            background: transparent;
            color: var(--success);
            pointer-events: none;
            border: 1px solid rgba(184, 255, 176, 0.2);
        }

        .step-btn.is-locked {
            background: transparent;
            color: var(--grey-4);
            pointer-events: none;
            border: 1px solid var(--border);
        }

        .limit-block {
            padding: 28px;
            border: 1px solid rgba(255, 176, 176, 0.2);
            background: rgba(255, 176, 176, 0.03);
            text-align: center;
        }

        .limit-block-icon {
            font-size: 32px;
            margin-bottom: 14px;
        }

        .limit-block-title {
            font-size: 15px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--danger);
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        .limit-block-sub {
            font-family: var(--mono);
            font-size: 11px;
            color: var(--grey-3);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .limit-timer {
            font-family: var(--mono);
            font-size: 16px;
            font-weight: 600;
            color: var(--danger);
            letter-spacing: 0.04em;
        }

        .claim-area {
            margin-top: 28px;
        }

        .btn-claim {
            width: 100%;
            padding: 18px;
            background: var(--white);
            color: var(--black);
            border: none;
            font-family: var(--mono);
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            cursor: pointer;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .btn-claim:hover:not(:disabled) {
            background: var(--grey-1);
        }

        .btn-claim:disabled {
            opacity: 0.3;
            cursor: not-allowed;
        }

        .dashboard {
            margin-top: 40px;
        }

        .section-heading {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 24px;
        }

        .section-heading-text {
            font-size: 11px;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.2em;
            color: var(--grey-3);
        }

        .section-heading::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border);
        }

        .keys-grid {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .key-card {
            border: 1px solid var(--border);
            padding: 24px;
            background: var(--grey-6);
            transition: border-color 0.2s ease;
            animation: fade-up 0.4s ease forwards;
            opacity: 0;
        }

        .key-card:nth-child(1) {
            animation-delay: 0.05s;
        }

        .key-card:nth-child(2) {
            animation-delay: 0.1s;
        }

        .key-card:nth-child(3) {
            animation-delay: 0.15s;
        }

        @keyframes fade-up {
            from {
                opacity: 0;
                transform: translateY(12px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .key-card:hover {
            border-color: var(--border-strong);
        }

        .key-card-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
        }

        .key-card-label {
            font-family: var(--mono);
            font-size: 9px;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--grey-4);
        }

        .status-tag {
            display: flex;
            align-items: center;
            gap: 5px;
            font-family: var(--mono);
            font-size: 9px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            padding: 4px 10px;
            border: 1px solid;
        }

        .status-tag.active {
            color: var(--success);
            border-color: rgba(184, 255, 176, 0.25);
            background: rgba(184, 255, 176, 0.04);
        }

        .status-tag.expired {
            color: var(--danger);
            border-color: rgba(255, 176, 176, 0.25);
            background: rgba(255, 176, 176, 0.04);
        }

        .status-tag::before {
            content: '';
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: currentColor;
        }

        .key-string-dash {
            background: var(--black);
            border: 1px solid var(--border);
            padding: 14px 16px;
            font-family: var(--mono);
            font-size: 11px;
            letter-spacing: 0.05em;
            color: var(--grey-2);
            word-break: break-all;
            line-height: 1.7;
            margin-bottom: 16px;
            user-select: all;
        }

        .key-stats {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 1px;
            background: var(--border);
            margin-bottom: 16px;
        }

        .stat-cell {
            background: var(--grey-6);
            padding: 12px;
            text-align: center;
        }

        .stat-cell-label {
            font-family: var(--mono);
            font-size: 8px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--grey-4);
            margin-bottom: 5px;
        }

        .stat-cell-value {
            font-family: var(--mono);
            font-size: 11px;
            font-weight: 600;
            color: var(--white);
        }

        .stat-cell-value.countdown {
            color: var(--success);
        }

        .key-card-actions {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
        }

        .card-action-btn {
            padding: 10px;
            background: transparent;
            border: 1px solid var(--border);
            color: var(--grey-3);
            font-family: var(--mono);
            font-size: 9px;
            font-weight: 600;
            letter-spacing: 0.14em;
            text-transform: uppercase;
            cursor: pointer;
            transition: all 0.15s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .card-action-btn:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: var(--border-strong);
            color: var(--white);
        }

        .empty-state {
            padding: 48px 24px;
            border: 1px dashed var(--border);
            text-align: center;
        }

        .empty-glyph {
            font-family: var(--mono);
            font-size: 28px;
            color: var(--grey-4);
            margin-bottom: 14px;
        }

        .empty-text {
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            color: var(--grey-3);
            margin-bottom: 6px;
        }

        .empty-sub {
            font-family: var(--mono);
            font-size: 10px;
            color: var(--grey-4);
        }

        #loadingScreen {
            padding: 80px 20px;
            text-align: center;
        }

        .loader-ring {
            width: 32px;
            height: 32px;
            border: 1px solid var(--border-strong);
            border-top-color: var(--white);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
            margin: 0 auto 20px;
        }

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

        .loader-text {
            font-family: var(--mono);
            font-size: 10px;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--grey-4);
        }

        #errorScreen {
            display: none;
            padding: 60px 20px;
            text-align: center;
            border: 1px solid rgba(255, 176, 176, 0.15);
        }

        .error-code {
            font-family: var(--mono);
            font-size: 9px;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--danger);
            margin-bottom: 20px;
            opacity: 0.6;
        }

        .error-msg {
            font-size: 18px;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }

        .error-detail {
            font-family: var(--mono);
            font-size: 11px;
            color: var(--grey-3);
        }

        #incognitoBlock {
            display: none;
            flex-direction: column;
            align-items: center;
            padding: 60px 28px;
            text-align: center;
            border: 1px solid rgba(255, 232, 160, 0.15);
            background: rgba(255, 232, 160, 0.02);
            max-width: 520px;
            width: 100%;
            margin: 0 auto;
        }

        .warn-code {
            font-family: var(--mono);
            font-size: 9px;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--warn);
            margin-bottom: 28px;
            opacity: 0.6;
        }

        .incog-icon {
            width: 60px;
            height: 60px;
            border: 1px solid rgba(255, 232, 160, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--warn);
            margin-bottom: 24px;
            position: relative;
        }

        .incog-icon::before {
            content: '';
            position: absolute;
            inset: 4px;
            border: 1px solid rgba(255, 232, 160, 0.07);
        }

        .warn-msg {
            font-size: 22px;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
            color: var(--white);
            line-height: 1.1;
        }

        .warn-detail {
            font-family: var(--mono);
            font-size: 11px;
            color: var(--grey-3);
            line-height: 1.9;
            max-width: 380px;
        }

        .incog-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
            width: 100%;
            margin: 28px 0;
        }

        .incog-steps {
            width: 100%;
            text-align: left;
        }

        .incog-step-label {
            font-family: var(--mono);
            font-size: 9px;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--grey-3);
            margin-bottom: 14px;
        }

        .incog-step-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .incog-step {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 11px 14px;
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.02);
            font-family: var(--mono);
            font-size: 11px;
            color: var(--grey-2);
            line-height: 1.5;
        }

        .incog-step-num {
            font-weight: 600;
            font-size: 10px;
            color: var(--warn);
            flex-shrink: 0;
            width: 20px;
            text-align: center;
            opacity: 0.75;
            letter-spacing: 0.05em;
        }

        .incog-retry-btn {
            width: 100%;
            margin-top: 0;
        }

        .incog-retry-btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
        }

        .incog-retry-msg {
            font-family: var(--mono);
            font-size: 10px;
            color: var(--danger);
            letter-spacing: 0.04em;
            min-height: 16px;
            margin-top: 12px;
            text-align: center;
            line-height: 1.6;
        }

        #mainContent {
            display: none;
        }

        #toast {
            position: fixed;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%) translateY(12px);
            background: var(--white);
            color: var(--black);
            padding: 12px 22px;
            font-family: var(--mono);
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.06em;
            opacity: 0;
            transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
            pointer-events: none;
            z-index: 999;
            white-space: nowrap;
        }

        #toast.show {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }

        @media (max-width: 768px) {
            .nav-container {
                flex-direction: column;
                gap: 16px;
            }

            .nav-links {
                flex-wrap: wrap;
                justify-content: center;
                gap: 16px;
            }

            .shell {
                padding: 40px 20px 60px;
            }

            .hub-title {
                font-size: 26px;
            }

            .hub-identity {
                flex-direction: row;
            }

            .key-stats {
                grid-template-columns: 1fr 1fr;
            }

            .hero {
                text-align: center;
            }
        }

        @media (max-width: 480px) {
            .nav-brand {
                font-size: 16px;
            }

            .nav-brand::before {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }

            .step-row {
                padding: 14px 16px;
            }

            .key-card {
                padding: 20px;
            }
        }