* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #0f0f23;
            color: #e0e0e0;
            min-height: 100vh;
            line-height: 1.6;
        }
        .container { max-width: 820px; margin: 0 auto; padding: 40px 24px 80px; }

        .crumb {
            color: rgba(255,255,255,0.62);
            font-size: 13px;
            margin-bottom: 20px;
        }
        .crumb a { color: #10B981; text-decoration: none; }
        .crumb a:hover { text-decoration: underline; }

        h1 {
            font-size: 36px;
            font-weight: 900;
            color: white;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .lede {
            font-size: 17px;
            color: rgba(255,255,255,0.6);
            margin-bottom: 36px;
            line-height: 1.5;
        }

        /* Quick-jump table of contents */
        .toc {
            background: rgba(16,185,129,0.06);
            border: 1px solid rgba(16,185,129,0.2);
            border-radius: 14px;
            padding: 20px 24px;
            margin-bottom: 40px;
        }
        .toc-title {
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 0.6px;
            font-weight: 800;
            color: #10B981;
            margin-bottom: 12px;
        }
        .toc ol { list-style: none; counter-reset: tocnum; padding: 0; }
        .toc li {
            counter-increment: tocnum;
            display: flex;
            align-items: baseline;
            gap: 10px;
            margin-bottom: 8px;
        }
        .toc li::before {
            content: counter(tocnum);
            min-width: 22px;
            height: 22px;
            background: rgba(16,185,129,0.15);
            color: #10B981;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .toc a {
            color: rgba(255,255,255,0.85);
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
        }
        .toc a:hover { color: #10B981; }

        /* Each problem section */
        .issue {
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: 16px;
            padding: 28px;
            margin-bottom: 24px;
            scroll-margin-top: 20px;
        }
        .issue h2 {
            font-size: 22px;
            font-weight: 800;
            color: white;
            margin: 0 0 14px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .issue .num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, #047857, #065f46);
            color: white;
            font-size: 15px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .symptom {
            background: rgba(251,191,36,0.06);
            border-left: 3px solid #fbbf24;
            border-radius: 0 10px 10px 0;
            padding: 12px 16px;
            margin-bottom: 16px;
        }
        .symptom .label {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            font-weight: 800;
            color: #fbbf24;
            margin-bottom: 4px;
        }
        .symptom p {
            font-size: 14px;
            color: rgba(255,255,255,0.8);
            margin: 0;
        }

        .why {
            font-size: 14px;
            color: rgba(255,255,255,0.55);
            font-style: italic;
            margin: 12px 0 14px;
        }

        .steps-label {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 0.6px;
            font-weight: 800;
            color: #10B981;
            margin: 16px 0 10px;
        }

        ol.steps {
            color: rgba(255,255,255,0.75);
            padding-left: 0;
            list-style: none;
            counter-reset: stepnum;
        }
        ol.steps > li {
            counter-increment: stepnum;
            margin-bottom: 14px;
            padding-left: 36px;
            position: relative;
        }
        ol.steps > li::before {
            content: counter(stepnum);
            position: absolute;
            left: 0;
            top: 0;
            width: 26px;
            height: 26px;
            background: rgba(16,185,129,0.12);
            color: #10B981;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 800;
        }
        ol.steps > li strong { color: white; }

        code, pre {
            font-family: 'Cascadia Code', Consolas, 'Courier New', monospace;
            font-size: 13px;
        }
        code.inline {
            background: rgba(96,165,250,0.1);
            color: #93c5fd;
            padding: 2px 7px;
            border-radius: 5px;
        }
        pre {
            background: #0a0a1a;
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: 8px;
            padding: 12px 14px;
            overflow-x: auto;
            color: #d1d5db;
            margin: 8px 0;
            font-size: 12px;
        }
        /* This scrollable code box has tabindex="0" (see troubleshooting.html)
           so a keyboard user can reach and scroll it -- give that keyboard
           focus a visible outline, matching this page's existing accent
           color. */
        pre:focus-visible { outline: 2px solid #10B981; outline-offset: 2px; }

        .still-stuck {
            background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(139,92,246,0.08));
            border: 1px solid rgba(139,92,246,0.25);
            border-radius: 16px;
            padding: 30px 28px;
            text-align: center;
            margin: 40px 0 30px;
        }
        .still-stuck h3 {
            font-size: 22px;
            font-weight: 800;
            color: white;
            margin: 0 0 8px;
        }
        .still-stuck p {
            color: rgba(255,255,255,0.65);
            font-size: 15px;
            margin: 0 0 20px;
        }
        .still-stuck a.cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            background: linear-gradient(135deg, #8b5cf6, #6366f1);
            color: white;
            text-decoration: none;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(139,92,246,0.3);
            transition: all 0.3s;
        }
        .still-stuck a.cta:hover { transform: translateY(-2px); }
        /* Inline icon (see .wh-icon note near the sprite at the top of
           <body>): color always comes from a real ancestor element so
           high-contrast mode's broad color override still applies. */
        .wh-icon { display: inline-block; vertical-align: middle; flex-shrink: 0; }
        .still-stuck .small {
            font-size: 12px;
            color: rgba(255,255,255,0.62);
            margin-top: 14px;
        }

        .footer {
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.62);
            font-size: 13px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer a {
            color: rgba(255,255,255,0.5);
            text-decoration: none;
        }
        .footer a:hover { color: #10B981; }