/* roulang page: index */
:root {
            --primary: #0F172A;
            --primary-dark: #090D16;
            --accent: #0284C7;
            --accent-hover: #0369A1;
            --success: #059669;
            --warning: #D97706;
            --bg-light: #F8FAFC;
            --bg-subtle: #F1F5F9;
            --card-bg: #FFFFFF;
            --border-color: #E2E8F0;
            --border-dark: #1E293B;
            --text-main: #0F172A;
            --text-muted: #475569;
            --text-sub: #94A3B8;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
            --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
            --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif; background-color: var(--bg-light); color: var(--text-main); }
        body { line-height: 1.6; font-size: 15px; -webkit-font-smoothing: antialiased; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; }
        .container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 20px; }
        
        /* Utility Top Bar */
        .utility-bar { background-color: var(--bg-subtle); border-bottom: 1px solid var(--border-color); font-size: 13px; color: var(--text-muted); padding: 8px 0; }
        .utility-content { display: flex; justify-content: space-between; align-items: center; }
        .utility-left span { margin-right: 20px; display: inline-flex; align-items: center; gap: 6px; }
        .utility-right a { color: var(--text-muted); margin-left: 16px; }
        .utility-right a:hover { color: var(--accent); }

        /* Main Header */
        .header { background: #FFFFFF; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm); }
        .nav-wrapper { display: flex; align-items: center; justify-content: space-between; height: 72px; }
        .brand-logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--primary); letter-spacing: -0.5px; }
        .logo-icon { width: 34px; height: 34px; background: var(--primary); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; position: relative; }
        .logo-icon::before { content: ""; width: 16px; height: 16px; border: 2px solid #38BDF8; border-radius: 2px; }
        .logo-icon::after { content: ""; position: absolute; width: 6px; height: 6px; background: #38BDF8; border-radius: 50%; }
        .nav-menu { display: flex; align-items: center; gap: 24px; list-style: none; }
        .nav-link { font-size: 14px; font-weight: 500; color: var(--text-muted); padding: 8px 0; position: relative; }
        .nav-link:hover, .nav-link.active { color: var(--accent); }
        .nav-link.active::after { content: ""; position: absolute; bottom: -2px; left: 0; width: 100%; height: 2px; background: var(--accent); }
        .btn-header { background: var(--accent); color: #FFF; font-size: 13px; font-weight: 600; padding: 10px 20px; border-radius: var(--radius-sm); transition: var(--transition); border: 1px solid transparent; }
        .btn-header:hover { background: var(--accent-hover); box-shadow: 0 2px 8px rgba(2, 132, 199, 0.35); }
        .mobile-toggle { display: none; background: none; border: 1px solid var(--border-color); padding: 6px 10px; border-radius: var(--radius-sm); cursor: pointer; }

        /* General Section */
        section { padding: 90px 0; }
        .section-header { text-align: center; max-width: 820px; margin: 0 auto 56px auto; }
        .section-tag { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 1px; color: var(--accent); background: #E0F2FE; padding: 4px 12px; border-radius: 20px; text-transform: uppercase; margin-bottom: 12px; border: 1px solid #BAE6FD; }
        .section-title { font-size: 32px; font-weight: 800; color: var(--primary); line-height: 1.3; margin-bottom: 16px; letter-spacing: -0.5px; }
        .section-desc { font-size: 16px; color: var(--text-muted); line-height: 1.7; }

        /* Hero - Blueprint: Coupon/Voucher Portal Style with Massive Primary Pass */
        .hero-section { background: radial-gradient(circle at 80% 20%, #1E293B 0%, var(--primary-dark) 100%); color: #FFF; padding: 70px 0 90px; border-bottom: 1px solid var(--border-dark); position: relative; overflow: hidden; }
        .hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; }
        .hero-badge-pill { display: inline-flex; align-items: center; gap: 8px; background: rgba(2, 132, 199, 0.15); border: 1px solid rgba(56, 189, 248, 0.3); padding: 6px 14px; border-radius: 20px; font-size: 13px; color: #38BDF8; margin-bottom: 20px; }
        .hero-title { font-size: 42px; font-weight: 900; line-height: 1.25; margin-bottom: 20px; letter-spacing: -1px; }
        .hero-title span { color: #38BDF8; }
        .hero-lead { font-size: 16px; color: #CBD5E1; line-height: 1.8; margin-bottom: 32px; }
        .hero-cert-group { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 24px; padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, 0.1); }
        .cert-tag { font-size: 12px; color: #94A3B8; background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.08); padding: 5px 12px; border-radius: 4px; }
        
        /* Voucher Wall Card */
        .voucher-wall { background: #131D33; border: 1px solid #1E293B; border-radius: var(--radius-lg); padding: 24px; box-shadow: 0 20px 40px rgba(0,0,0,0.4); position: relative; }
        .voucher-wall::before { content: ""; position: absolute; top: -1px; left: 30px; right: 30px; height: 2px; background: linear-gradient(90deg, transparent, #38BDF8, transparent); }
        .voucher-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; border-bottom: 1px dashed rgba(255,255,255,0.15); padding-bottom: 12px; }
        .voucher-header h3 { font-size: 16px; font-weight: 700; color: #F8FAFC; }
        .voucher-status { font-size: 12px; color: #34D399; font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
        .main-voucher { background: linear-gradient(135deg, #0284C7 0%, #0369A1 100%); border-radius: var(--radius-md); padding: 20px; margin-bottom: 16px; position: relative; overflow: hidden; }
        .voucher-val { font-size: 32px; font-weight: 900; line-height: 1; margin-bottom: 8px; color: #FFFFFF; }
        .voucher-name { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
        .voucher-desc { font-size: 12px; opacity: 0.9; margin-bottom: 16px; line-height: 1.5; }
        .voucher-btn { display: block; text-align: center; background: #FFFFFF; color: var(--primary); font-size: 14px; font-weight: 700; padding: 10px; border-radius: var(--radius-sm); border: none; cursor: pointer; transition: var(--transition); }
        .voucher-btn:hover { background: #F1F5F9; transform: translateY(-1px); }
        .voucher-mini-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
        .mini-voucher-item { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); padding: 12px; border-radius: var(--radius-sm); display: flex; flex-direction: column; justify-content: space-between; }
        .mini-voucher-title { font-size: 12px; font-weight: 600; color: #E2E8F0; margin-bottom: 4px; }
        .mini-voucher-sub { font-size: 11px; color: #94A3B8; margin-bottom: 8px; }
        .mini-claim-link { font-size: 11px; color: #38BDF8; font-weight: 600; text-align: right; }

        /* Section 2: Catalog Matrix (#catalog) */
        .catalog-section { background: #FFFFFF; border-bottom: 1px solid var(--border-color); }
        .catalog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .catalog-card { background: var(--bg-light); border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
        .catalog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #CBD5E1; }
        .catalog-img-wrap { height: 180px; overflow: hidden; background: #0F172A; position: relative; }
        .catalog-img-wrap img { width: 100%; height: 100%; object-fit: cover; opacity: 0.85; transition: var(--transition); }
        .catalog-card:hover .catalog-img-wrap img { opacity: 1; transform: scale(1.03); }
        .catalog-badge { position: absolute; top: 12px; left: 12px; background: rgba(15, 23, 42, 0.85); color: #F8FAFC; font-size: 11px; padding: 4px 8px; border-radius: var(--radius-sm); border: 1px solid rgba(255,255,255,0.2); backdrop-filter: blur(4px); }
        .catalog-body { padding: 24px; flex-grow: 1; display: flex; flex-direction: column; }
        .catalog-item-title { font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
        .catalog-item-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; flex-grow: 1; }
        .spec-list { list-style: none; margin-bottom: 20px; font-size: 12px; color: #334155; }
        .spec-list li { display: flex; justify-content: space-between; padding: 4px 0; border-bottom: 1px dashed var(--border-color); }
        .catalog-action { margin-top: auto; }
        .btn-outline-blue { display: block; text-align: center; border: 1px solid var(--accent); color: var(--accent); font-size: 13px; font-weight: 600; padding: 8px 16px; border-radius: var(--radius-sm); }
        .btn-outline-blue:hover { background: var(--accent); color: #FFF; }

        /* Section 3: Recommended Systems (#recommend) */
        .recommend-section { background: var(--bg-light); border-bottom: 1px solid var(--border-color); }
        .recommend-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
        .recommend-card { background: #FFFFFF; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 32px; position: relative; }
        .recommend-tag { position: absolute; top: 24px; right: 24px; background: #DCFCE7; color: #15803D; font-size: 11px; font-weight: 700; padding: 4px 10px; border-radius: 20px; }
        .recommend-title { font-size: 20px; font-weight: 800; color: var(--primary); margin-bottom: 12px; }
        .recommend-p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; }
        .feature-bullets { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 24px; }
        .feature-bullets li { font-size: 13px; color: #1E293B; display: flex; align-items: center; gap: 8px; }
        .feature-bullets li::before { content: "✓"; color: var(--accent); font-weight: 800; }

        /* Section 4: News & Technical Papers (#news) */
        .news-section { background: #FFFFFF; border-bottom: 1px solid var(--border-color); }
        .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .news-card { border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; background: #FFF; transition: var(--transition); display: flex; flex-direction: column; }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent); }
        .news-thumb { height: 140px; background: #1E293B; overflow: hidden; }
        .news-thumb img { width: 100%; height: 100%; object-fit: cover; }
        .news-content { padding: 18px; flex-grow: 1; display: flex; flex-direction: column; }
        .news-date { font-size: 12px; color: var(--text-sub); margin-bottom: 8px; }
        .news-card-title { font-size: 15px; font-weight: 700; color: var(--primary); line-height: 1.4; margin-bottom: 8px; }
        .news-brief { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 14px; flex-grow: 1; }
        .news-link { font-size: 12px; color: var(--accent); font-weight: 600; margin-top: auto; }

        /* Section 5: Technical Index & Collections (#topics) */
        .topics-section { background: var(--bg-light); border-bottom: 1px solid var(--border-color); }
        .index-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .index-box { background: #FFF; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 24px; }
        .index-box h4 { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 16px; border-left: 3px solid var(--accent); padding-left: 10px; }
        .index-links { list-style: none; }
        .index-links li { padding: 8px 0; border-bottom: 1px solid #F1F5F9; font-size: 13px; color: var(--text-muted); display: flex; justify-content: space-between; }
        .index-links li a:hover { color: var(--accent); }
        .index-links span { color: var(--text-sub); font-size: 11px; }

        /* Section 6: Architecture Hardcore (#architecture) */
        .dark-case-section { background: var(--primary-dark); color: #FFF; padding: 90px 0; border-bottom: 1px solid #1E293B; }
        .dark-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .dark-content h2 { font-size: 30px; font-weight: 800; margin-bottom: 20px; line-height: 1.3; color: #F8FAFC; }
        .dark-content p { font-size: 15px; color: #94A3B8; line-height: 1.8; margin-bottom: 28px; }
        .lead-points { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
        .lead-item { display: flex; gap: 14px; align-items: flex-start; }
        .lead-num { font-size: 12px; font-weight: 800; background: rgba(2, 132, 199, 0.2); color: #38BDF8; border: 1px solid rgba(56, 189, 248, 0.4); width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
        .lead-text h5 { font-size: 14px; color: #E2E8F0; margin-bottom: 2px; }
        .lead-text p { font-size: 12px; color: #94A3B8; margin: 0; }
        .dark-img-holder { position: relative; border-radius: var(--radius-md); overflow: hidden; border: 1px solid #1E293B; }
        .dark-img-holder img { width: 100%; border-radius: var(--radius-md); }

        /* Section 7: Key Performance Metrics (#metrics) */
        .metrics-section { background: #FFFFFF; border-bottom: 1px solid var(--border-color); padding: 60px 0; }
        .metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
        .metric-cell { padding: 10px 20px; border-right: 1px solid var(--border-color); }
        .metric-cell:last-child { border-right: none; }
        .metric-val { font-size: 38px; font-weight: 900; color: var(--primary); line-height: 1.1; margin-bottom: 8px; font-family: "Inter", "Roboto Mono", sans-serif; }
        .metric-val span { color: var(--accent); font-size: 24px; }
        .metric-title { font-size: 14px; font-weight: 700; color: #1E293B; margin-bottom: 4px; }
        .metric-sub { font-size: 12px; color: var(--text-sub); }

        /* Section 8: User Reviews & Social Proof (#reviews) */
        .reviews-section { background: var(--bg-light); border-bottom: 1px solid var(--border-color); }
        .reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .review-card { background: #FFFFFF; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 28px; display: flex; flex-direction: column; justify-content: space-between; }
        .review-body { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; font-style: italic; }
        .reviewer-meta { display: flex; align-items: center; gap: 12px; }
        .reviewer-avatar { width: 42px; height: 42px; background: #0284C7; color: #FFF; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; }
        .reviewer-info h5 { font-size: 14px; font-weight: 700; color: var(--primary); }
        .reviewer-info span { font-size: 12px; color: var(--text-sub); display: block; }

        /* Section 9: Feature Matrix 6 Cards (#features) */
        .features-section { background: #FFFFFF; border-bottom: 1px solid var(--border-color); }
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .feature-box { background: var(--bg-light); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 24px; transition: var(--transition); }
        .feature-box:hover { border-color: var(--accent); background: #FFF; box-shadow: var(--shadow-sm); transform: translateY(-2px); }
        .feat-icon { width: 44px; height: 44px; background: #E0F2FE; color: var(--accent); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 18px; margin-bottom: 16px; border: 1px solid #BAE6FD; }
        .feat-title { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
        .feat-p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

        /* Section 10: Comparison Table (#comparison) */
        .comparison-section { background: var(--bg-light); border-bottom: 1px solid var(--border-color); }
        .table-responsive { overflow-x: auto; background: #FFFFFF; border: 1px solid var(--border-color); border-radius: var(--radius-md); }
        .comparison-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 13px; }
        .comparison-table th, .comparison-table td { padding: 16px 20px; border-bottom: 1px solid var(--border-color); }
        .comparison-table th { background: #F8FAFC; color: var(--primary); font-weight: 700; }
        .col-highlight { background: #F0F9FF; font-weight: 700; color: var(--accent); }

        /* Section 11: Real Scenario Demonstrations (#stories) */
        .stories-section { background: #FFFFFF; border-bottom: 1px solid var(--border-color); }
        .story-tabs { display: flex; flex-direction: column; gap: 32px; }
        .story-row { display: grid; grid-template-columns: 1fr 1.2fr; gap: 36px; align-items: center; padding: 24px; background: var(--bg-light); border: 1px solid var(--border-color); border-radius: var(--radius-md); }
        .story-img { border-radius: var(--radius-sm); overflow: hidden; height: 220px; }
        .story-img img { width: 100%; height: 100%; object-fit: cover; }
        .story-info h4 { font-size: 20px; font-weight: 800; color: var(--primary); margin-bottom: 10px; }
        .story-info p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 14px; }
        .story-metric-tag { display: inline-block; background: #DCFCE7; color: #166534; font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 4px; border: 1px solid #BBF7D0; }

        /* Section 12: Guarantee Bar (#guarantee) */
        .guarantee-section { background: #0F172A; color: #FFF; padding: 45px 0; border-bottom: 1px solid #1E293B; }
        .guarantee-flex { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; }
        .guar-item { display: flex; align-items: center; gap: 12px; }
        .guar-icon { width: 36px; height: 36px; background: rgba(2, 132, 199, 0.2); border: 1px solid #0284C7; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; color: #38BDF8; font-size: 14px; }
        .guar-text h5 { font-size: 14px; font-weight: 700; color: #F8FAFC; }
        .guar-text p { font-size: 12px; color: #94A3B8; margin: 0; }

        /* Section 13: Solution Request CTA Form (#cta) */
        .cta-section { background: var(--bg-light); padding: 90px 0; }
        .cta-box { background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%); border-radius: var(--radius-lg); padding: 48px; color: #FFF; border: 1px solid #334155; }
        .cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .cta-box h3 { font-size: 28px; font-weight: 800; margin-bottom: 16px; color: #FFF; }
        .cta-box p { font-size: 15px; color: #CBD5E1; line-height: 1.7; margin-bottom: 24px; }
        .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
        .form-full { grid-column: span 2; }
        .form-group label { display: block; font-size: 12px; font-weight: 600; color: #E2E8F0; margin-bottom: 6px; }
        .form-control { width: 100%; background: #090D16; border: 1px solid #334155; border-radius: var(--radius-sm); padding: 10px 14px; font-size: 13px; color: #FFF; outline: none; transition: var(--transition); }
        .form-control:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.25); }
        .btn-submit { background: var(--accent); color: #FFF; font-size: 15px; font-weight: 700; padding: 12px; border-radius: var(--radius-sm); border: none; cursor: pointer; width: 100%; transition: var(--transition); margin-top: 8px; }
        .btn-submit:hover { background: var(--accent-hover); }

        /* Floating Quick Action */
        .floating-action { position: fixed; right: 24px; bottom: 30px; display: flex; flex-direction: column; gap: 10px; z-index: 99; }
        .float-btn { width: 44px; height: 44px; background: #0F172A; color: #FFF; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-lg); font-size: 12px; font-weight: 700; border: 1px solid #334155; }
        .float-btn:hover { background: var(--accent); }
        .mobile-bar { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: #0F172A; border-top: 1px solid #1E293B; padding: 10px 16px; z-index: 999; justify-content: space-between; align-items: center; }
        .mobile-bar a { flex: 1; text-align: center; font-size: 13px; font-weight: 700; padding: 8px 12px; border-radius: var(--radius-sm); margin: 0 4px; }
        .btn-mob-tel { background: #1E293B; color: #38BDF8; border: 1px solid #334155; }
        .btn-mob-cta { background: var(--accent); color: #FFF; }

        /* Footer */
        .footer { background: #090D16; color: #94A3B8; font-size: 13px; padding: 60px 0 30px; border-top: 1px solid #1E293B; }
        .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 48px; }
        .footer-logo { font-size: 20px; font-weight: 800; color: #F8FAFC; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
        .footer-p { line-height: 1.8; margin-bottom: 16px; }
        .footer-title { font-size: 14px; font-weight: 700; color: #E2E8F0; margin-bottom: 18px; text-transform: uppercase; letter-spacing: 0.5px; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a:hover { color: #38BDF8; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: #64748B; }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .hero-grid, .cta-grid, .dark-grid, .recommend-wrapper, .story-row { grid-template-columns: 1fr; }
            .catalog-grid, .features-grid, .reviews-grid, .index-grid { grid-template-columns: 1fr 1fr; }
            .news-grid { grid-template-columns: 1fr 1fr; }
            .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
            .metric-cell { border-right: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .utility-bar { display: none; }
            .nav-menu { display: none; }
            .mobile-toggle { display: block; }
            .catalog-grid, .features-grid, .reviews-grid, .news-grid, .index-grid { grid-template-columns: 1fr; }
            .metrics-grid { grid-template-columns: 1fr; }
            .voucher-mini-list { grid-template-columns: 1fr; }
            .hero-title { font-size: 30px; }
            .section-title { font-size: 24px; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
            .floating-action { display: none; }
            .mobile-bar { display: flex; }
            section { padding: 60px 0; }
            body { padding-bottom: 60px; }
        }