:root {
    --primary: #A55EEA;          /* 紫色 */
    --primary-dark: #7C3AED;     /* 深紫 */
    --accent: #2BCBBA;           /* 青色 */
    --blue: #5F9DFF;             /* 亮蓝 */
    --bg: #0B0B12;               /* 保持深色背景 */
    --surface: rgba(255,255,255,0.04);
    --surface2: rgba(255,255,255,0.07);
    --text: #F0F0F5;
    --text-muted: #8888A0;
    --border: rgba(255,255,255,0.08);
    --radius: 24px;
}

        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--bg); color: var(--text); overflow-x: hidden; line-height: 1.7;
            margin: 0;
        }
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg); }
        ::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

        /* NAV */
        nav {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            padding: 0.9rem 3rem;
            display: flex; align-items: center; justify-content: space-between;
            backdrop-filter: blur(24px);
            background: rgba(11,11,18,0.85);
            border-bottom: 1px solid var(--border);
        }
        .nav-logo { display: flex; align-items: center; gap: 0.75rem; font-size: 1.4rem; font-weight: 950; text-decoration: none; color: var(--text); }
        .nav-logo img { width: 38px; height: 38px; border-radius: 10px; object-fit: cover; }
        .nav-logo .logo-text { background: linear-gradient(135deg, var(--primary), #FFB347); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; margin: 0; }
        .nav-links a { color: var(--text-muted); text-decoration: none; font-size: 0.88rem; font-weight: 500; transition: color 0.3s; }
        .nav-links a:hover { color: var(--text); }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white; border: none; padding: 0.55rem 1.5rem; border-radius: 10px;
            font-weight: 700; cursor: pointer; font-size: 0.88rem; text-decoration: none;
            transition: all 0.2s;
        }
        .nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 25px rgba(255,107,53,0.4); }
        .nav-sitemap { color: var(--text-muted); font-size: 0.82rem; }

        /* ── HERO ── */
        .hero {
            min-height: 100vh;
            display: flex; align-items: center;
            padding: 7rem 3rem 4rem;
            max-width: 1300px; margin: 0 auto;
            gap: 5rem;
        }
        .hero-left { flex: 1; }
        .hero-right { flex: 1; display: flex; justify-content: center; align-items: center; }

        .hero-tag {
            display: inline-flex; align-items: center; gap: 0.5rem;
            background: rgba(255,107,53,0.12); border: 1px solid rgba(255,107,53,0.3);
            padding: 0.4rem 1.2rem; border-radius: 50px;
            font-size: 0.78rem; color: var(--primary); font-weight: 700;
            margin-bottom: 2rem;
        }
        .hero h1 {
            font-size: clamp(2.8rem, 5vw, 4.5rem);
            font-weight: 950; line-height: 1.1; margin-bottom: 1.25rem;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary) 0%, #FFB347 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }
        .hero p { color: var(--text-muted); font-size: 1.05rem; max-width: 480px; margin-bottom: 2.5rem; line-height: 1.85; }

        .hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white; border: none; padding: 0.9rem 2.2rem; border-radius: 12px;
            font-weight: 700; font-size: 0.98rem; cursor: pointer; text-decoration: none;
            display: inline-flex; align-items: center; gap: 0.5rem; transition: all 0.3s;
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 35px rgba(255,107,53,0.45); }
        .btn-ghost {
            background: var(--surface2); color: var(--text); border: 1px solid var(--border);
            padding: 0.9rem 2.2rem; border-radius: 12px;
            font-weight: 600; font-size: 0.98rem; cursor: pointer; text-decoration: none;
            display: inline-flex; align-items: center; gap: 0.5rem; transition: all 0.3s;
        }
        .btn-ghost:hover { border-color: var(--primary); }

        .hero-stats { display: flex; gap: 2rem; flex-wrap: wrap; }
        .stat-item { text-align: left; }
        .stat-num { font-size: 1.8rem; font-weight: 950; background: linear-gradient(135deg, var(--primary), #FFB347); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .stat-label { font-size: 0.78rem; color: var(--text-muted); font-weight: 600; }

        /* RIGHT: animated card stack */
        .hero-visual { position: relative; width: 100%; max-width: 420px; }
        .vc-top {
            background: linear-gradient(135deg, rgba(255,107,53,0.15), rgba(255,107,53,0.05));
            border: 1px solid rgba(255,107,53,0.2);
            border-radius: 24px; padding: 2.5rem;
            position: relative; z-index: 2;
        }
        .vc-title { font-size: 0.9rem; font-weight: 800; color: var(--primary); margin-bottom: 1.5rem; }
        .vc-servers { display: flex; flex-direction: column; gap: 0.75rem; }
        .vc-server {
            display: flex; align-items: center; gap: 0.75rem;
            padding: 0.85rem 1rem;
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border); border-radius: 14px;
            transition: all 0.3s; cursor: pointer;
        }
        .vc-server:hover, .vc-server.active { border-color: var(--primary); background: rgba(255,107,53,0.08); }
        .vc-server .flag { font-size: 1.4rem; }
        .vc-server .info { flex: 1; }
        .vc-server .name { font-size: 0.82rem; font-weight: 800; }
        .vc-server .ping { font-size: 0.72rem; color: var(--accent); font-weight: 600; }
        .vc-server .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 6px var(--accent); }
        .vc-server .dot.off { background: #555; box-shadow: none; }
        .vc-connect {
            margin-top: 1.5rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white; border: none; width: 100%; padding: 0.85rem;
            border-radius: 14px; font-weight: 800; font-size: 0.95rem; cursor: pointer;
            transition: all 0.3s;
        }
        .vc-connect:hover { box-shadow: 0 8px 25px rgba(255,107,53,0.5); transform: translateY(-1px); }
        .vc-float {
            position: absolute; background: var(--surface2);
            border: 1px solid rgba(0,212,170,0.3); border-radius: 16px; padding: 0.8rem 1.1rem;
            display: flex; align-items: center; gap: 0.5rem;
            font-size: 0.82rem; font-weight: 700; color: var(--accent);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
            animation: vcFloat 3s ease-in-out infinite;
        }
        .vc-float.top-right { top: -20px; right: -30px; animation-delay: -1s; }
        .vc-float.bot-left { bottom: -15px; left: -25px; animation-delay: -2s; }
        @keyframes vcFloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

        /* ── MARQUEE STRIP ── */
        .marquee-strip {
            background: linear-gradient(90deg, var(--primary), var(--primary-dark));
            padding: 0.85rem 0; overflow: hidden;
            white-space: nowrap;
        }
        .marquee-track {
            display: inline-flex; animation: marquee 30s linear infinite;
        }
        .marquee-item { padding: 0 2.5rem; font-size: 0.85rem; font-weight: 700; color: rgba(255,255,255,0.9); }
        .marquee-item::before { content: '✦ '; }
        @keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

        /* ── WHY CHOOSE QUICKQ VPN ── */
        .why-section { padding: 5rem 3rem; max-width: 1300px; margin: 0 auto; }
        .section-label { text-align: center; font-size: 0.78rem; font-weight: 800; color: var(--primary); text-transform: uppercase; letter-spacing: 3px; margin-bottom: 0.5rem; }
        .section-title { text-align: center; font-size: 2.2rem; font-weight: 950; margin-bottom: 3rem; }
        .why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
        .why-card {
            background: var(--surface2); border: 1px solid var(--border); border-radius: 20px;
            padding: 2rem 1.5rem; text-align: center;
            transition: all 0.3s;
        }
        .why-card:hover { transform: translateY(-5px); border-color: rgba(255,107,53,0.3); }
        .why-icon { font-size: 3rem; margin-bottom: 1rem; }
        .why-card h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 0.75rem; }
        .why-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; }

        /* ── SCROLLING IMAGE GALLERY ── */
        .gallery-section { padding: 5rem 0; overflow: hidden; }
        .gallery-title { text-align: center; font-size: 0.78rem; font-weight: 800; color: var(--primary); text-transform: uppercase; letter-spacing: 3px; margin-bottom: 0.5rem; }
        .gallery-heading { text-align: center; font-size: 2.2rem; font-weight: 950; margin-bottom: 0.75rem; }
        .gallery-sub { text-align: center; color: var(--text-muted); margin-bottom: 2.5rem; }
        .gallery-scroll { overflow: hidden; }
        .gallery-track {
            display: flex; gap: 1.25rem;
            animation: galleryScroll 25s linear infinite;
            width: max-content;
        }
        .gallery-track:hover { animation-play-state: paused; }
        @keyframes galleryScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
        .gallery-img {
            width: 320px; height: 200px; border-radius: 18px; object-fit: cover;
            flex-shrink: 0;
            transition: transform 0.3s;
        }
        .gallery-img:hover { transform: scale(1.05); }

        /* ── SPLIT FEATURE ── */
        .split-section { padding: 5rem 3rem; max-width: 1300px; margin: 0 auto; }
        .split-row { display: flex; gap: 4rem; align-items: center; margin-bottom: 6rem; }
        .split-row:nth-child(even) { flex-direction: row-reverse; }
        .split-img-wrap { flex: 1; position: relative; }
        .split-img {
            width: 100%; height: 320px; border-radius: 22px; object-fit: cover;
            box-shadow: 0 20px 60px rgba(0,0,0,0.4);
        }
        .split-img-badge {
            position: absolute; bottom: -15px; right: -15px;
            background: var(--primary); color: white;
            border-radius: 14px; padding: 0.8rem 1.2rem;
            font-size: 0.82rem; font-weight: 800;
            box-shadow: 0 8px 25px rgba(255,107,53,0.4);
        }
        .split-text { flex: 1; }
        .split-icon { font-size: 2.5rem; margin-bottom: 1rem; }
        .split-text h3 { font-size: 1.8rem; font-weight: 950; margin-bottom: 1rem; }
        .split-text p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.85; margin-bottom: 1.5rem; }
        .split-tags { display: flex; gap: 0.75rem; flex-wrap: wrap; }
        .split-tag {
            background: rgba(255,107,53,0.1); border: 1px solid rgba(255,107,53,0.25);
            border-radius: 50px; padding: 0.35rem 1rem;
            font-size: 0.78rem; font-weight: 700; color: var(--primary);
        }

        /* ── PRICING ── */
        .pricing-section {
            padding: 5rem 3rem;
            background: linear-gradient(180deg, transparent, rgba(255,107,53,0.04), transparent);
        }
        .pricing-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
            max-width: 1000px; margin: 0 auto;
        }
        .pricing-card {
            background: var(--surface2); border: 1px solid var(--border);
            border-radius: 24px; padding: 2.5rem 2rem;
            text-align: center;
            transition: all 0.35s;
        }
        .pricing-card:hover { transform: translateY(-5px); box-shadow: 0 20px 50px rgba(255,107,53,0.1); }
        .pricing-card.popular {
            border-color: var(--primary);
            background: rgba(255,107,53,0.06);
            position: relative;
        }
        .pricing-popular-badge {
            position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
            background: var(--primary); color: white;
            border-radius: 50px; padding: 0.3rem 1rem;
            font-size: 0.72rem; font-weight: 800;
        }
        .pricing-name { font-size: 1rem; font-weight: 800; margin-bottom: 0.5rem; }
        .pricing-price { font-size: 2.5rem; font-weight: 950; margin-bottom: 0.25rem; background: linear-gradient(135deg, var(--primary), #FFB347); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .pricing-price sub { font-size: 0.8rem; font-weight: 600; -webkit-text-fill-color: var(--text-muted); }
        .pricing-desc { color: var(--text-muted); font-size: 0.83rem; margin-bottom: 1.5rem; }
        .pricing-features { list-style: none; text-align: left; margin-bottom: 2rem; }
        .pricing-features li { padding: 0.5rem 0; font-size: 0.85rem; color: var(--text-muted); display: flex; align-items: center; gap: 0.5rem; }
        .pricing-features li::before { content: '✓'; color: var(--accent); font-weight: 900; }
        .pricing-btn {
            width: 100%; padding: 0.85rem;
            border-radius: 14px; font-weight: 800; font-size: 0.92rem;
            cursor: pointer; border: none; transition: all 0.3s;
        }
        .pricing-btn.primary { background: var(--primary); color: white; }
        .pricing-btn.outline { background: transparent; border: 1.5px solid var(--border); color: var(--text); }
        .pricing-btn.primary:hover { box-shadow: 0 8px 25px rgba(255,107,53,0.4); transform: translateY(-1px); }

        /* ── TESTIMONIALS ── */
        .testi-section { padding: 5rem 3rem; max-width: 1300px; margin: 0 auto; }
        .testi-title { font-size: 2.2rem; font-weight: 950; text-align: center; margin-bottom: 2.5rem; }
        .testi-scroll { overflow-x: auto; display: flex; gap: 1.25rem; padding-bottom: 1rem; }
        .testi-scroll::-webkit-scrollbar { height: 4px; }
        .testi-card {
            min-width: 340px; max-width: 340px;
            background: var(--surface2); border: 1px solid var(--border);
            border-radius: 20px; padding: 2rem;
            flex-shrink: 0;
            transition: all 0.3s;
        }
        .testi-card:hover { border-color: rgba(255,107,53,0.3); transform: translateY(-3px); }
        .testi-stars { color: #FFB347; font-size: 0.9rem; margin-bottom: 0.75rem; letter-spacing: 2px; }
        .testi-text { color: var(--text); font-size: 0.88rem; line-height: 1.8; margin-bottom: 1.2rem; font-style: italic; }
        .testi-footer { display: flex; align-items: center; gap: 0.75rem; }
        .testi-icon {
            width: 40px; height: 40px; border-radius: 50%;
            background: rgba(255,107,53,0.2);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.5rem;
        }
        .testi-name { font-weight: 800; font-size: 0.87rem; }
        .testi-role { color: var(--text-muted); font-size: 0.75rem; }

        /* ── FAQ ── */
        .faq-section { padding: 5rem 3rem; max-width: 780px; margin: 0 auto; }
        .faq-title { text-align: center; font-size: 2.2rem; font-weight: 950; margin-bottom: 2.5rem; }
        .faq-item { background: var(--surface2); border: 1px solid var(--border); border-radius: 16px; margin-bottom: 0.75rem; overflow: hidden; transition: all 0.3s; }
        .faq-item:hover { border-color: rgba(255,107,53,0.3); }
        .faq-q { padding: 1.2rem 1.5rem; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 700; font-size: 0.93rem; }
        .faq-q::after { content: '+'; font-size: 1.2rem; color: var(--primary); transition: transform 0.3s; }
        .faq-item.open .faq-q::after { transform: rotate(45deg); }
        .faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 1.5rem; color: var(--text-muted); font-size: 0.87rem; line-height: 1.85; }
        .faq-item.open .faq-a { max-height: 400px; padding-bottom: 1.2rem; }

        /* ── CTA ── */
        .cta { padding: 6rem 3rem; text-align: center; position: relative; overflow: hidden; }
        .cta::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 50% 50%, rgba(255,107,53,0.2), transparent 70%); }
        .cta h2 { font-size: 2.8rem; font-weight: 950; position: relative; z-index: 1; margin-bottom: 1rem; }
        .cta p { color: var(--text-muted); font-size: 1.05rem; position: relative; z-index: 1; margin-bottom: 2rem; }
        .cta .btn-primary { font-size: 1.05rem; padding: 1rem 2.5rem; position: relative; z-index: 1; }

        /* ── FOOTER ── */
        footer { padding: 3rem; border-top: 1px solid var(--border); }
        .footer-grid { max-width: 1300px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2rem; }
        .footer-brand p { color: var(--text-muted); font-size: 0.86rem; margin-top: 0.75rem; line-height: 1.8; }
        .footer-col h4 { font-size: 0.87rem; font-weight: 800; margin-bottom: 1rem; }
        .footer-col a { display: block; color: var(--text-muted); text-decoration: none; font-size: 0.82rem; margin-bottom: 0.5rem; transition: color 0.3s; }
        .footer-col a:hover { color: var(--primary); }
        .footer-bottom { max-width: 1300px; margin: 0 auto; padding-top: 2rem; border-top: 1px solid var(--border); display: flex; justify-content: space-between; font-size: 0.79rem; color: var(--text-muted); }

        /* 新增板块样式 */
        .steps-section { padding: 5rem 3rem; max-width: 1300px; margin: 0 auto; }
        .steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3rem; }
        .step-card { background: var(--surface2); border: 1px solid var(--border); border-radius: 20px; padding: 2rem; text-align: center; transition: all 0.3s; }
        .step-card:hover { border-color: var(--primary); transform: translateY(-5px); }
        .step-number { font-size: 2.5rem; font-weight: 950; color: var(--primary); }
        .step-icon { font-size: 2.5rem; margin: 1rem 0; }
        .step-card h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 0.75rem; }
        .step-card p { color: var(--text-muted); font-size: 0.9rem; }

        .comparison-section { padding: 5rem 3rem; background: linear-gradient(180deg, transparent, rgba(255,107,53,0.03), transparent); }
        .comparison-table { max-width: 800px; margin: 0 auto; border-collapse: collapse; width: 100%; background: var(--surface2); border-radius: 16px; overflow: hidden; }
        .comparison-table th, .comparison-table td { padding: 1rem 1.5rem; text-align: center; border-bottom: 1px solid var(--border); }
        .comparison-table th { background: rgba(255,107,53,0.1); font-weight: 800; }
        .comparison-table td:first-child { text-align: left; font-weight: 600; }
        .check { color: var(--accent); font-weight: 900; }
        .cross { color: #ff5555; font-weight: 900; }

        .nodes-section { padding: 5rem 3rem; max-width: 1300px; margin: 0 auto; }
        .nodes-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; margin-top: 3rem; }
        .node-card { background: var(--surface2); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem; text-align: center; transition: all 0.3s; }
        .node-card:hover { border-color: var(--primary); transform: translateY(-3px); }
        .node-flag { font-size: 2rem; margin-bottom: 0.5rem; }
        .node-name { font-weight: 800; margin-bottom: 0.25rem; }
        .node-info { color: var(--text-muted); font-size: 0.8rem; }

        @media (max-width: 1024px) {
            .hero { flex-direction: column; padding: 7rem 2rem 3rem; gap: 3rem; }
            .split-row { flex-direction: column !important; gap: 2rem; }
            .pricing-grid { grid-template-columns: 1fr; }
            .why-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .nodes-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .nav-links { display: none; }
        }
        @media (max-width: 600px) {
            .footer-grid { grid-template-columns: 1fr; }
            .testi-scroll { gap: 1rem; }
            .nodes-grid { grid-template-columns: 1fr; }
            .comparison-table { font-size: 0.8rem; }
            .comparison-table th, .comparison-table td { padding: 0.75rem 0.5rem; }
        }