/* Base & Reset */
        :root {
            --color-brand: #6d6fea;
            --color-brand-dark: #4b4db8;
            --color-bg-light: #fdfdfd;
            --color-bg-alt: #f4f5f9;
            --color-bg-dark: #12121a;
            --color-text-main: #2b2b36;
            --color-text-muted: #5a5a6b;
            --color-text-inverse: #ffffff;
            --color-accent: #ff7139; /* Firefox heritage orange hint */
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 20px 40px rgba(109, 111, 234, 0.15);
            --transition: all 0.25s ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --font-serif: Georgia, "Times New Roman", Times, serif;
            --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
        }

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

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

        /* Essential Structural Utilities */
        .globe {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 5vw;
        }

        .nexus {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
        }

        .nexus > * {
            min-width: 0;
        }

        .fur {
            word-break: break-word;
            overflow-wrap: break-word;
            word-break: keep-all; /* Better for Chinese */
            line-height: 1.8;
        }

        .crest {
            word-break: break-word;
            overflow-wrap: break-word;
            white-space: normal;
            line-height: 1.3;
        }

        /* Typography */
        h1.crest { font-size: clamp(2.5rem, 5vw, 4.5rem); font-weight: 800; letter-spacing: -0.02em; }
        h2.crest { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; letter-spacing: -0.01em; margin-bottom: 1.5rem; }
        h3.crest { font-size: clamp(1.25rem, 2vw, 1.5rem); font-weight: 600; margin-bottom: 1rem; }
        p.fur { font-size: clamp(1rem, 1.2vw, 1.125rem); color: var(--color-text-muted); margin-bottom: 1.5rem; }

        /* Header & Navigation (scout, orbit, skulk, trail) */
        .apex {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(253, 253, 253, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: var(--transition);
        }

        .orbit {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 5vw;
            max-width: 1440px;
            margin: 0 auto;
        }

        .orbit > * { min-width: 0; }

        .snout {
            display: flex;
            align-items: center;
        }

        .snout img {
            height: 32px;
            width: auto;
            display: block;
        }

        .skulk {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            align-items: center;
        }

        .skulk > * { min-width: 0; }

        .trail {
            text-decoration: none;
            color: var(--color-text-main);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }

        .trail::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-brand);
            transition: var(--transition);
        }

        .trail:hover, .trail:focus {
            color: var(--color-brand);
        }

        .trail:hover::after, .trail.active::after {
            width: 100%;
        }

        .trail.active {
            color: var(--color-brand);
        }

        /* Button Component (spark, leap) */
        .spark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 1rem 2rem;
            background-color: var(--color-brand);
            color: var(--color-text-inverse);
            text-decoration: none;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: var(--transition);
            border: none;
            cursor: pointer;
            font-size: 1.1rem;
        }

        .spark:hover, .spark:focus {
            background-color: var(--color-brand-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(109, 111, 234, 0.3);
        }

        .spark-outline {
            background-color: transparent;
            color: var(--color-brand);
            border: 2px solid var(--color-brand);
        }

        .spark-outline:hover, .spark-outline:focus {
            background-color: var(--color-brand);
            color: var(--color-text-inverse);
        }

        /* Hero Area (blaze, flare) - Blueprint: fullbleed_overlay */
        .blaze {
            position: relative;
            width: 100%;
            min-height: 95vh;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1a1a2e 50%, var(--color-brand-dark) 100%);
            overflow: hidden;
            padding-top: 80px; /* Offset for fixed header */
        }

        .blaze > * { min-width: 0; }

        /* Abstract geometric pattern for background visual interest since no image */
        .blaze::before {
            content: '';
            position: absolute;
            top: -50%; left: -50%; width: 200%; height: 200%;
            background: radial-gradient(circle at center, rgba(109, 111, 234, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 80% 20%, rgba(255, 113, 57, 0.1) 0%, transparent 40%);
            animation: rotate 60s linear infinite;
            z-index: 1;
        }

        @keyframes rotate { 100% { transform: rotate(360deg); } }

        .flare {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 900px;
            color: var(--color-text-inverse);
        }

        .flare .crest {
            color: var(--color-text-inverse);
            margin-bottom: 1.5rem;
            text-shadow: 0 4px 12px rgba(0,0,0,0.3);
        }

        .flare .fur {
            color: rgba(255,255,255,0.85);
            font-size: clamp(1.125rem, 1.5vw, 1.5rem);
            margin-bottom: 2.5rem;
        }

        .flare .nexus {
            justify-content: center;
            gap: 1rem;
        }

        /* Section Spacing */
        .pelt {
            padding: 8rem 0;
        }

        /* Privacy Shield UI (hearth, gecko) - Visual Carrier: data_ui */
        .hearth-privacy {
            background-color: var(--color-bg-light);
        }

        .privacy-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 4rem;
            align-items: center;
        }

        .data-ember {
            background: var(--color-bg-alt);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow-soft);
            border: 1px solid rgba(0,0,0,0.03);
            display: grid;
            gap: 1.5rem;
        }

        .gecko-data {
            background: var(--color-bg-light);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            transition: var(--transition);
            border-left: 4px solid var(--color-brand);
        }

        .gecko-data > * { min-width: 0; }
        .gecko-data:hover { transform: translateX(5px); box-shadow: var(--shadow-hover); }

        .paw-data {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(109, 111, 234, 0.1);
            color: var(--color-brand);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .paw-data svg { width: 24px; height: 24px; fill: currentColor; }

        .data-stats {
            flex: 1;
        }

        .data-stats .crest { font-size: 1.1rem; margin-bottom: 0.25rem; }
        .data-stats .fur { margin-bottom: 0; font-size: 0.9rem; color: var(--color-text-muted); }
        .data-value {
            font-family: var(--font-mono);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-brand);
            display: block;
            margin-top: 0.5rem;
        }

        /* Ecosystem Area (biome, gaze) */
        .biome-ecosystem {
            background-color: var(--color-bg-dark);
            color: var(--color-text-inverse);
            position: relative;
            overflow: hidden;
        }

        .biome-ecosystem .crest { color: var(--color-text-inverse); }
        .biome-ecosystem .fur { color: rgba(255,255,255,0.7); }

        .eco-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 5rem;
            align-items: center;
        }

        .gaze-pelt {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 30px 60px rgba(0,0,0,0.5);
            transform: perspective(1000px) rotateY(-5deg);
            transition: var(--transition);
        }

        .gaze-pelt:hover {
            transform: perspective(1000px) rotateY(0deg);
        }

        .gaze {
            width: 100%;
            height: auto;
            display: block;
        }

        .gaze-pelt::after {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: linear-gradient(to top right, rgba(109, 111, 234, 0.2), transparent);
            pointer-events: none;
        }

        /* Path Hub (aurora, ember) */
        .aurora-hub {
            background-color: var(--color-bg-alt);
        }

        .hub-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .ember-ember {
            background: var(--color-bg-light);
            border-radius: var(--radius-md);
            padding: 2.5rem;
            box-shadow: var(--shadow-soft);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
            border: 1px solid transparent;
        }

        .ember-ember > * { min-width: 0; }
        .ember-ember:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(109, 111, 234, 0.2);
        }

        .paw-glint {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--color-brand), var(--color-brand-dark));
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }

        .paw-glint svg { width: 28px; height: 28px; fill: currentColor; }

        .ember-ember .fur { flex-grow: 1; }

        .trail-dart {
            display: inline-flex;
            align-items: center;
            color: var(--color-brand);
            font-weight: 600;
            text-decoration: none;
            margin-top: 1rem;
            transition: var(--transition);
        }

        .trail-dart svg {
            width: 20px; height: 20px;
            margin-left: 0.5rem;
            transition: transform 0.2s ease;
            fill: currentColor;
        }

        .trail-dart:hover { color: var(--color-brand-dark); }
        .trail-dart:hover svg { transform: translateX(4px); }

        /* Manifesto (hearth-manifesto) */
        .hearth-manifesto {
            background-color: var(--color-bg-light);
            text-align: center;
        }

        .manifesto-pelt {
            max-width: 800px;
            margin: 0 auto;
        }

        .manifesto-pelt .crest {
            font-family: var(--font-serif);
            font-size: clamp(2rem, 3vw, 2.5rem);
            font-style: italic;
            color: var(--color-text-main);
            margin-bottom: 2rem;
            line-height: 1.4;
        }

        .ring-divider {
            width: 60px;
            height: 4px;
            background: var(--color-brand);
            margin: 0 auto 2rem;
            border-radius: 2px;
        }

        /* Footer (root, ash) */
        .root {
            background-color: var(--color-bg-dark);
            color: var(--color-text-inverse);
            padding: 4rem 0 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
        }

        .ash {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 2rem;
            margin-top: 3rem;
        }

        .ash > * { min-width: 0; }

        .root-brand {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-text-inverse);
        }

        .root-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
        }

        .root-links .trail {
            color: rgba(255,255,255,0.6);
        }

        .root-links .trail:hover {
            color: var(--color-text-inverse);
        }
        
        .root-links .trail::after { display: none; }

        /* Responsive */
        @media (max-width: 1024px) {
            .eco-layout,
            .privacy-grid {
                grid-template-columns: 1fr;
                gap: 3rem;
            }
            .gaze-pelt { transform: none; }
            .gaze-pelt:hover { transform: none; }
        }

        @media (max-width: 768px) {
            .skulk { display: none; /* Simplification for mobile, usually a hamburger menu here */ }
            .blaze { padding-top: 60px; min-height: 85vh; }
            .pelt { padding: 5rem 0; }
            .ash { flex-direction: column; gap: 1rem; text-align: center; justify-content: center; }
            .data-ember { padding: 1.5rem; }
        }