:root {
            --primary-color: #007aff; /* Apple Blue */
            --bg-color: #ffffff;
            --text-color: #1d1d1f;
            --secondary-text: #86868b;
            --section-bg: #f5f5f7;
            --border-color: #e5e5e5;
            --border-radius: 12px;
            --btn-hover: #0071e3;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.6; /* Increased line-height for better readability of longer text */
        }

        /* Container styling to mimic App Store max-width */
        .container {
            max-width: 980px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* --- HEADER --- */
        header {
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            padding: 15px 0;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .app-mini-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .app-icon-small {
            width: 30px;
            height: 30px;
            background: transparent;
            border-radius: 8px;
            overflow: hidden;
        }

        .app-icon-small img {
            width: 100%;
            height: 100%;
            display: block;
            object-fit: cover;
        }

        .app-name-small {
            font-weight: 600;
            font-size: 0.9rem;
        }

        .btn-download {
            background-color: var(--primary-color);
            color: white;
            padding: 6px 20px;
            border-radius: 20px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.85rem;
            transition: background 0.2s;
        }

        .btn-download:hover {
            background-color: var(--btn-hover);
        }

        /* --- HERO SECTION --- */
        .hero {
            padding: 60px 0 40px;
        }

        .hero-content {
            display: flex;
            gap: 40px;
            align-items: flex-start;
        }

        .app-icon-large {
            width: 180px;
            height: 180px;
            border-radius: 40px;
            background: transparent;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            flex-shrink: 0;
            overflow: hidden;
        }

        .app-icon-large img {
            width: 100%;
            height: 100%;
            display: block;
            object-fit: cover;
        }

        .hero-text h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

        .hero-text h2 {
            font-size: 1.3rem;
            color: var(--secondary-text);
            font-weight: 400;
            margin-bottom: 25px;
            line-height: 1.4;
        }

        .hero-quick-steps {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 10px;
            margin-bottom: 22px;
        }

        .hero-step-card {
            background: #f7f8fc;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 10px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-step-card strong {
            font-size: 0.82rem;
            color: var(--primary-color);
            line-height: 1.2;
        }

        .hero-step-card span {
            font-size: 0.78rem;
            color: #4e4e54;
            line-height: 1.35;
        }

        .ratings {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: nowrap;
            margin-bottom: 25px;
            color: var(--secondary-text);
            font-size: 0.8rem;
            font-weight: 600;
            line-height: 1;
            min-height: 22px;
        }

        .ratings-line {
            display: flex;
            align-items: center;
            height: 22px;
            font-size: 0.92rem;
            line-height: 1;
            white-space: nowrap;
        }

        .rating-item {
            display: flex;
            flex-direction: column;
        }

        .stars {
            display: flex;
            align-items: center;
            height: 22px;
            color: #ff9500; /* Star color */
            font-size: 1rem;
            line-height: 1;
            transform: none;
        }

        .hero-btn-large {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 12px 30px;
            border-radius: 25px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
        }

        .hero-subnote {
            margin-top: 20px;
            font-size: 0.9rem;
            color: #666;
            max-width: 400px;
            text-align: left;
        }

        .howto-section {
            padding: 4px 0 20px;
        }

        .howto-section .hero-quick-steps {
            margin-bottom: 0;
        }

        /* --- SCREENSHOTS SCROLL --- */
        .screenshots-section {
            padding: 20px 0 50px;
            overflow: hidden;
        }

        .screenshots-heading {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 18px;
            line-height: 1.2;
        }

        .screenshots-container {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 12px;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none; /* Firefox */
        }
        
        .screenshots-container::-webkit-scrollbar {
            display: none; /* Chrome/Safari */
        }

        .screenshot {
            width: 260px; /* iPhone width ratio */
            height: 562px;
            background-color: #f0f0f0;
            border-radius: 35px;
            flex-shrink: 0;
            overflow: hidden;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .screenshot img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .screenshots-indicator {
            width: 100%;
            height: 6px;
            margin: 8px auto 0;
            background: #e5e5ea;
            border-radius: 999px;
            overflow: hidden;
            cursor: pointer;
            touch-action: none;
        }

        .screenshots-indicator-thumb {
            height: 100%;
            width: 25%;
            background: var(--primary-color);
            border-radius: inherit;
            transform: translateX(0);
            transition: transform 0.12s linear;
            cursor: grab;
        }

        .screenshots-indicator-thumb.is-dragging {
            cursor: grabbing;
        }
        
        /* --- DESCRIPTION --- */
        .description-section {
            border-top: 1px solid var(--border-color);
            padding: 40px 0;
        }

        .description-text {
            max-width: 760px; /* Slightly wider for reading comfort */
        }

        .description-text p {
            margin-bottom: 1.5rem; /* More breathing room */
            font-size: 1.05rem;
            color: #333;
        }

        .description-text h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 20px;
            margin-top: 40px;
            color: #111;
        }
        
        .description-text h2:first-of-type {
            margin-top: 0;
        }

        .highlight {
            font-weight: 600;
            color: var(--text-color);
            font-size: 1.1rem;
        }

        .steps,
        .tips {
            margin: 20px 0 30px;
            padding-left: 20px;
            color: #333;
            font-size: 1.02rem;
        }

        .steps li,
        .tips li {
            margin-bottom: 12px;
        }
        
        .faq {
            margin-top: 40px;
        }

        .faq h3 {
            margin-top: 30px;
            margin-bottom: 10px;
            font-size: 1.15rem;
            font-weight: 600;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); /* Slightly wider cards */
            gap: 30px;
            margin-top: 50px;
        }

        .feature-card {
            background: #fafafa;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid #eee;
        }

        .feature-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: #000;
        }

        .feature-card p {
            font-size: 0.95rem;
            color: var(--secondary-text);
            margin-bottom: 0;
        }

        /* --- REVIEWS --- */
        .reviews-section {
            width: min(980px, calc(100% - 40px));
            padding: 40px 20px 80px;
            background-color: var(--section-bg);
            margin: 60px auto 0;
        }

        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            gap: 16px;
            margin-bottom: 30px;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
        }

        .section-link {
            color: var(--primary-color);
            font-size: 1rem;
            font-weight: 600;
            white-space: nowrap;
        }

        .review-card {
            background: white;
            padding: 24px;
            border-radius: var(--border-radius);
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            margin-bottom: 20px;
        }

        .review-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 12px;
        }

        .review-title {
            font-weight: 700;
            font-size: 1rem;
        }

        .review-date {
            color: var(--secondary-text);
            font-size: 0.85rem;
        }

        .review-body {
            font-size: 0.95rem;
            color: #444;
            line-height: 1.5;
        }

        /* --- LEGAL / SUPPORT PAGES --- */
        .page-shell {
            padding: 40px 0 80px;
        }

        .legal-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
        }

        .legal-card h1 {
            font-size: 2rem;
            margin-bottom: 12px;
            line-height: 1.2;
        }

        .legal-card h2 {
            font-size: 1.2rem;
            margin-top: 24px;
            margin-bottom: 8px;
        }

        .legal-card p,
        .legal-card li {
            color: #3f3f45;
            font-size: 0.98rem;
        }

        .legal-card ul {
            padding-left: 20px;
            display: grid;
            gap: 8px;
        }

        .legal-card .muted {
            color: var(--secondary-text);
            font-size: 0.9rem;
        }

        /* --- FOOTER --- */
        footer {
            border-top: 1px solid var(--border-color);
            padding: 50px 0;
            text-align: center;
            color: var(--secondary-text);
            font-size: 0.9rem;
            background-color: #fafafa;
        }

        footer a {
            color: var(--primary-color);
            text-decoration: none;
            margin: 0 15px;
            transition: color 0.2s;
        }
        
        footer a:hover {
            text-decoration: underline;
        }

        /* MOBILE OPTIMIZATIONS */
        @media (max-width: 768px) {
            .hero-content {
                flex-direction: column;
                align-items: center;
                text-align: center;
                gap: 25px;
            }

            .app-icon-large {
                width: 150px;
                height: 150px;
                border-radius: 35px;
            }

            .ratings {
                justify-content: center;
            }

            .hero-quick-steps {
                grid-template-columns: 1fr;
                text-align: left;
            }

            .hero-subnote {
                margin: 20px auto 0;
                text-align: center;
            }
            
            .feature-grid {
                grid-template-columns: 1fr;
            }

            .screenshot {
                width: 220px;
                height: 476px;
            }
        }