:root {
            --bg: #07130e;
            --bg-surface: #0c1c15;
            --bg-card: rgba(15, 33, 26, 0.94);
            --card-gradient: linear-gradient(135deg, rgba(16, 36, 29, 0.96) 0%, rgba(9, 23, 18, 0.98) 100%);
            --surface-border: rgba(47, 211, 154, 0.22); --border-subtle: rgba(255, 255, 255, 0.08);
            --gold: #f59e0b; --gold-light: #fbbf24; --indigo: #00a878;
            --indigo-light: #7ee6c0;
            --emerald: #10b981; --emerald-light: #34d399; --cyan: #22d3ee;
            --text-primary: #f0f7f4;
            --text-secondary: #a5c0b6;
            --text-muted: #74938a;
            --radius-lg: 16px; --radius-md: 12px;
            --font: 'Assistant', 'Inter', -apple-system, sans-serif; --mono: 'JetBrains Mono', monospace;
        }
        *, *::before { box-sizing: border-box; max-width: 100%; }
        body { background-color: var(--bg); color: var(--text-primary); font-family: var(--font); line-height: 1.7; margin: 0; min-height: 100vh; overflow-x: hidden; font-variant-numeric: tabular-nums; }
        .site-header { position: sticky; top: 0; z-index: 100; background: rgba(10, 24, 19, 0.95); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border-subtle); padding: 12px 20px; }
        .header-inner { max-width: 1120px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
        .brand-logo { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.15rem; color: #fff; text-decoration: none; }
        .brand-logo .accent { color: var(--gold); }
        .nav-links { display: flex; align-items: center; gap: 16px; }
        .nav-link { color: var(--text-secondary); text-decoration: none; font-size: 0.9rem; font-weight: 600; }
        .nav-link:hover { color: #fff; }
        .btn-launch-os { background: linear-gradient(135deg, var(--gold), #d97706); color: #000; font-weight: 800; font-size: 0.85rem; padding: 8px 16px; border-radius: 30px; text-decoration: none; display: inline-flex; align-items: center; min-height: 44px; }
        .main-container { max-width: 880px; margin: 0 auto; padding: 36px 20px 80px 20px; }
        .hero-section { text-align: center; margin-bottom: 36px; }
        .badge-kicker { display: inline-flex; background: rgba(47, 211, 154, 0.14); border: 1px solid rgba(47, 211, 154, 0.35); color: #7ee6c0; font-size: 0.8rem; font-weight: 700; padding: 4px 14px; border-radius: 20px; margin-bottom: 14px; letter-spacing: 0.05em; }
        h1 { font-size: clamp(1.85rem, 4vw, 2.6rem); font-weight: 900; line-height: 1.25; letter-spacing: -0.03em; margin-bottom: 12px; }
        .lead-p { font-size: 1.1rem; color: var(--text-secondary); max-width: 720px; margin: 0 auto 20px auto; }

        /* Progress tracker */
        .progress-panel { background: var(--bg-card); border: 1px solid var(--surface-border); border-radius: var(--radius-lg); padding: 22px; margin-bottom: 36px; }
        .progress-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; flex-wrap: wrap; gap: 8px; }
        .progress-title { font-weight: 800; font-size: 1.05rem; }
        .progress-count { font-family: var(--mono); color: var(--gold-light); font-weight: 700; font-size: 1rem; }
        .progress-bar-wrap { height: 10px; background: rgba(255,255,255,0.08); border-radius: 10px; overflow: hidden; }
        .progress-bar-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--gold), var(--emerald)); transition: width 0.4s ease; }
        .progress-note { font-size: 0.8rem; color: var(--text-muted); margin-top: 10px; }
        .progress-reset { background: none; border: 1px solid var(--border-subtle); color: var(--text-muted); font-size: 0.75rem; padding: 4px 12px; border-radius: 16px; cursor: pointer; }
        .progress-reset:hover { color: #fff; border-color: var(--text-secondary); }

        /* Step cards */
        .step-card { background: var(--bg-card); border: 1px solid var(--surface-border); border-radius: var(--radius-lg); padding: 24px; margin-bottom: 22px; scroll-margin-top: 90px; }
        .step-card.done { border-color: rgba(16,185,129,0.45); }
        .step-head { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 14px; }
        .step-num { flex-shrink: 0; width: 46px; height: 46px; border-radius: 14px; background: rgba(245,158,11,0.15); border: 1px solid rgba(245,158,11,0.4); color: var(--gold-light); font-family: var(--mono); font-weight: 700; font-size: 1.3rem; display: flex; align-items: center; justify-content: center; }
        .step-card.done .step-num { background: rgba(16,185,129,0.15); border-color: rgba(16,185,129,0.5); color: var(--emerald-light); }
        .step-head h2 { font-size: 1.25rem; font-weight: 900; color: #fff; margin: 4px 0 0; line-height: 1.4; }
        .step-tag { font-size: 0.75rem; color: var(--text-muted); font-weight: 600; }
        .step-body { color: var(--text-secondary); font-size: 0.95rem; }
        .step-body p { margin: 0 0 12px; }
        .step-body strong { color: var(--text-primary); }
        .mission-box { background: rgba(5, 8, 17, 0.55); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); padding: 14px 16px; margin: 14px 0; }
        .mission-box h4 { margin: 0 0 8px; font-size: 0.85rem; color: var(--gold-light); font-weight: 800; }
        .mission-box ul { margin: 0; padding-right: 20px; }
        .mission-box li { font-size: 0.88rem; margin-bottom: 5px; }
        .tools-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 14px; }
        .tools-label { font-size: 0.78rem; color: var(--text-muted); font-weight: 700; }
        .tool-chip { display: inline-flex; align-items: center; gap: 5px; background: rgba(99,102,241,0.12); border: 1px solid rgba(99,102,241,0.3); color: var(--indigo-light); font-size: 0.8rem; font-weight: 700; padding: 5px 13px; border-radius: 16px; text-decoration: none; min-height: 36px; transition: background 0.15s; }
        .tool-chip:hover { background: rgba(99,102,241,0.28); color: #fff; }
        .done-toggle { display: flex; align-items: center; gap: 10px; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--border-subtle); }
        .done-toggle label { display: flex; align-items: center; gap: 10px; cursor: pointer; font-size: 0.9rem; font-weight: 700; color: var(--text-secondary); user-select: none; }
        .done-toggle input[type="checkbox"] { width: 22px; height: 22px; accent-color: var(--emerald); cursor: pointer; }
        .done-toggle input:checked + span { color: var(--emerald-light); }

        .disclaimer-box { background: rgba(245,158,11,0.06); border: 1px solid rgba(245,158,11,0.25); border-radius: var(--radius-md); padding: 16px 20px; font-size: 0.8rem; color: var(--text-secondary); line-height: 1.7; margin-top: 36px; }
        .sources-box { background: rgba(0,0,0,0.25); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); padding: 20px; margin-top: 24px; font-size: 0.85rem; color: var(--text-muted); }
        .site-footer { border-top: 1px solid var(--border-subtle); padding: 44px 20px; font-size: 0.85rem; color: var(--text-muted); background: var(--bg-surface); text-align: center; }

        .skip-link { position: absolute; top: -48px; left: 12px; z-index: 9999; background: var(--indigo); color: #fff; padding: 10px 18px; border-radius: 0 0 8px 8px; font-weight: 700; text-decoration: none; transition: top 0.15s; }
        .skip-link:focus-visible { top: 0; }
        a:focus-visible, button:focus-visible, input:focus-visible, [tabindex]:focus-visible { outline: 2px solid var(--gold-light); outline-offset: 2px; }
        @media (max-width: 640px) { .main-container { padding: 24px 14px 60px; } .step-card { padding: 18px; } .step-num { width: 38px; height: 38px; font-size: 1.1rem; } }
        @media (prefers-reduced-motion: reduce) { *, *::before { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; } }