/* ============================================================
           🔹 QuickQ 全平台加速器 · 主视觉配色（紫青系）
           ============================================================ */
        :root{
            --violet:#7C3AED;
            --violet-deep:#5B21B6;
            --violet-soft:#F4EFFF;
            --cyan:#06B6D4;
            --ink:#1E1B4B;
            --ink-2:#4B4A6F;
            --line:rgba(124,58,237,.08);
            --line-strong:rgba(124,58,237,.16);
        }

        *{margin:0;padding:0;box-sizing:border-box}
        body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:#FCFBFF;color:var(--ink);line-height:1.6;scroll-behavior:smooth}
        .container{max-width:80%;margin:0 auto;padding:0 40px}
        .navbar{background:rgba(255,255,255,.9);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100;padding:14px 0}
        .nav-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;position:relative}
        .logo-area{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.6rem;color:var(--ink);text-decoration:none}
        .logo-area img{height:40px;width:auto;display:block}
        .logo-area span{color:var(--violet)}
        .nav-links{display:flex;gap:24px;align-items:center;flex-wrap:wrap}
        .nav-links a{text-decoration:none;font-weight:500;color:#3B3A5C;font-size:.92rem;transition:.2s;position:relative}
        .nav-links a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--violet),var(--cyan));transition:width .3s}
        .nav-links a:hover::after{width:100%}
        .nav-links a:hover{color:var(--violet)}
        .btn-nav{background:linear-gradient(120deg,var(--violet),#9333EA);color:#fff!important;padding:8px 24px;border-radius:40px;font-weight:600;font-size:.85rem;box-shadow:0 6px 18px rgba(124,58,237,.22);transition:all .3s}
        .btn-nav::after{display:none!important}
        .btn-nav:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(124,58,237,.3)}
        .btn-primary{background:linear-gradient(120deg,var(--violet),#9333EA);color:#fff;border:none;padding:14px 38px;border-radius:60px;font-weight:600;font-size:1.05rem;display:inline-flex;align-items:center;gap:10px;box-shadow:0 6px 20px rgba(124,58,237,.22);transition:all .3s;cursor:pointer;text-decoration:none}
        .btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(124,58,237,.32)}
        .btn-outline{background:0 0;border:1.5px solid var(--line-strong);color:#3B3A5C;padding:14px 28px;border-radius:60px;font-weight:600;font-size:1.05rem;display:inline-flex;align-items:center;gap:10px;transition:.3s;text-decoration:none}
        .btn-outline:hover{border-color:var(--violet);color:var(--violet);background:rgba(124,58,237,.03)}
        .hamburger{display:none;background:0 0;border:none;font-size:1.8rem;color:var(--ink);cursor:pointer;padding:4px 8px;transition:.2s;z-index:101}
        .hamburger:hover{color:var(--violet)}
        .back-to-top{position:fixed;bottom:30px;right:30px;width:48px;height:48px;border-radius:50%;background:linear-gradient(140deg,var(--violet),#9333EA);color:#fff;border:none;font-size:1.2rem;cursor:pointer;box-shadow:0 6px 20px rgba(124,58,237,.32);transition:all .3s ease;opacity:0;visibility:hidden;z-index:999}
        .back-to-top.show{opacity:1;visibility:visible}
        .back-to-top:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(124,58,237,.42)}
        .footer{background:#150F35;color:rgba(255,255,255,.7);padding:50px 0 30px;border-top:3px solid var(--violet)}
        .footer a{color:rgba(255,255,255,.6);text-decoration:none;transition:.2s}
        .footer a:hover{color:#fff}
        .footer .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;margin-bottom:30px}
        .footer .brand-col .logo{font-size:1.8rem;font-weight:700;color:#fff;display:flex;align-items:center;gap:10px;margin-bottom:12px}
        .footer .brand-col .logo i{color:var(--violet)}
        .footer .brand-col .logo span{color:var(--cyan)}
        .footer .brand-col p{font-size:.9rem;line-height:1.7;max-width:340px}
        .footer .col h4{color:#fff;font-size:1rem;font-weight:600;margin-bottom:14px;letter-spacing:.3px}
        .footer .col ul{list-style:none}
        .footer .col ul li{margin-bottom:8px}
        .footer .col ul li a{font-size:.9rem;color:rgba(255,255,255,.6);transition:.2s}
        .footer .col ul li a:hover{color:var(--cyan)}
        .footer .footer-bottom{border-top:1px solid rgba(255,255,255,.06);padding-top:18px;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;font-size:.8rem}
        .footer .footer-bottom .icp{color:rgba(255,255,255,.4);text-align:center}
        .footer .footer-bottom .icp .sep{margin:0 10px;color:rgba(255,255,255,.15)}

        /* ============================================================
           🔸 页面 style（.main-index 下所有模块）
           ============================================================ */

        /* ----- 英雄区 hero ----- */
        .main-index .hero { padding: 72px 0 62px; background: linear-gradient(140deg, #ffffff 0%, #F3EDFF 52%, #E8F8FF 100%); }
        .main-index .hero-grid {
            display: flex; align-items: center; gap: 60px;
            flex-wrap: wrap;
        }
        .main-index .hero-left { flex: 1.1; min-width: 320px; }
        .main-index .hero-right { flex: 1.2; min-width: 300px; display: flex; justify-content: flex-end; }
        .main-index .hero-badge {
            display: inline-block; background: rgba(124,58,237,0.07);
            border: 1px solid rgba(124,58,237,0.10); border-radius: 40px;
            padding: 6px 22px; font-size: 0.85rem; font-weight: 600;
            color: var(--violet); margin-bottom: 14px;
        }
        .main-index .hero h1 {
            font-size: 3.1rem; font-weight: 800; line-height: 1.1;
            color: var(--ink); margin-bottom: 14px;
        }
        .main-index .hero h1 .highlight {
            background: linear-gradient(100deg,var(--violet),var(--cyan));
            -webkit-background-clip: text; background-clip: text; color: transparent;
        }
        .main-index .hero-desc {
            font-size: 1.08rem; color: var(--ink-2); max-width: 540px;
            margin-bottom: 22px; line-height: 1.85;
        }
        .main-index .hero-desc strong { color: var(--ink); }
        .main-index .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
        .main-index .hero-platforms {
            display: flex; gap: 12px; flex-wrap: wrap; margin-top: 18px;
        }
        .main-index .hero-platforms span {
            display: inline-flex; align-items: center; gap: 8px;
            background: #ffffff; padding: 6px 18px; border-radius: 30px;
            font-size: 0.9rem; font-weight: 500; color: #33325A;
            border: 1px solid var(--line);
            box-shadow: 0 3px 10px rgba(124,58,237,0.04);
        }
        .main-index .hero-platforms i { color: var(--violet); }

        .main-index .hero-image-single .img-wrapper {
            padding: 10px;
            transition: 0.4s; display: inline-flex;
            align-items: center; justify-content: center; max-width: 100%;
            animation: heroFloat 3.5s ease-in-out infinite;
        }
        @keyframes heroFloat {
            0% { transform: translateY(0); }
            50% { transform: translateY(-14px); }
            100% { transform: translateY(0); }
        }
        .main-index .hero-image-single .img-wrapper img {
            width: 100%;height: auto;
            object-fit: contain;
            display: block;
        }

        /* ----- 品牌介绍1 brand-intro ----- */
        .main-index .brand-intro-section {
            padding: 62px 0 72px;
            background: #ffffff;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .main-index .brand-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: stretch;
        }
        .main-index .brand-intro-image {
            background: var(--violet-soft);
            border-radius: 22px;
            padding: 16px;
            border: 1px solid var(--line);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 320px;
        }
        .main-index .brand-intro-image img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            display: block;
            max-height: 400px;
            object-fit: contain;
        }
        .main-index .brand-intro-text {
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 320px;
        }
        .main-index .brand-intro-text h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 14px;
        }
        .main-index .brand-intro-text h2 i {
            color: var(--violet);
            margin-right: 10px;
        }
        .main-index .brand-intro-text p {
            color: var(--ink-2);
            font-size: 1rem;
            line-height: 1.9;
            margin-bottom: 14px;
        }
        .main-index .brand-intro-text p strong { color: var(--ink); }
        .main-index .brand-intro-text .brand-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }
        .main-index .brand-intro-text .brand-tags span {
            background: var(--violet-soft);
            border: 1px solid var(--line);
            border-radius: 30px;
            padding: 4px 16px;
            font-size: 0.8rem;
            color: var(--violet);
            font-weight: 500;
        }

        /* ----- 品牌介绍2 intro ----- */
        .main-index .intro-section { padding: 72px 0 62px; background: #ffffff; border-top: 1px solid var(--line); }
        .main-index .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: stretch;
        }
        .main-index .intro-text {
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 320px;
        }
        .main-index .intro-text h2 { font-size: 2rem; font-weight: 700; color: var(--ink); margin-bottom: 14px; }
        .main-index .intro-text h2 i { color: var(--violet); margin-right: 10px; }
        .main-index .intro-text p { color: var(--ink-2); font-size: 1rem; line-height: 1.85; margin-bottom: 14px; }
        .main-index .intro-text .highlight-box {
            background: linear-gradient(120deg,#F6F1FF,#EAF9FF);
            border-left: 4px solid var(--violet);
            padding: 18px 22px; border-radius: 10px; margin-top: 14px;
            font-size: 0.95rem; color: var(--ink-2);
        }
        .main-index .intro-text .highlight-box strong { color: var(--violet); }
        .main-index .intro-stats {
            display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
            align-content: center;
        }
        .main-index .intro-stat-card {
            background: var(--violet-soft); border-radius: 18px; padding: 26px 20px;
            border: 1px solid var(--line); text-align: center;
        }
        .main-index .intro-stat-card .num {
            font-size: 2.1rem; font-weight: 800;
            background: linear-gradient(110deg,var(--violet),var(--cyan));
            -webkit-background-clip: text; background-clip: text; color: transparent;
        }
        .main-index .intro-stat-card .label { font-size: 0.9rem; color: var(--ink-2); }

        /* ----- 定价 pricing ----- */
        .main-index .pricing-section { padding: 72px 0 82px; background: #ffffff; border-top: 1px solid var(--line); }
        .main-index .pricing-grid {
            display: flex; flex-wrap: wrap; gap: 30px;
            justify-content: center;
        }
        .main-index .pricing-card {
            background: var(--violet-soft); border-radius: 28px; padding: 36px 30px 32px;
            flex: 1;
            border: 1px solid var(--line); transition: 0.4s; text-align: center;
            box-shadow: 0 3px 14px rgba(124,58,237,0.03);
        }
        .main-index .pricing-card:hover {
            transform: translateY(-6px); border-color: var(--line-strong);
            box-shadow: 0 22px 44px -14px rgba(124,58,237,0.14);
        }
        .main-index .pricing-card.featured {
            border: 2px solid var(--violet);
            background: linear-gradient(150deg, #ffffff, #F5EFFF);
            position: relative;
        }
        .main-index .pricing-card.featured::before {
            content: "最受欢迎"; position: absolute; top: -12px; right: 20px;
            background: linear-gradient(120deg,var(--violet),#9333EA); color: #fff; padding: 3px 18px;
            border-radius: 30px; font-size: 0.7rem; font-weight: 600;
        }
        .main-index .pricing-icon { font-size: 2.8rem; color: var(--violet); margin-bottom: 16px; }
        .main-index .pricing-name { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; color: var(--ink); }
        .main-index .pricing-desc { color: var(--ink-2); font-size: 0.95rem; margin-bottom: 14px; }
        .main-index .pricing-price { font-size: 2.2rem; font-weight: 800; color: var(--violet); margin-bottom: 16px; }
        .main-index .price-unit { font-size: 0.9rem; font-weight: 400; color: #7C7AA0; }
        .main-index .price-old { font-size: 0.85rem; color: #A5A3C4; text-decoration: line-through; margin-left: 8px; }
        .main-index .pricing-features {
            list-style: none; margin: 16px 0; text-align: left; padding-left: 4px;
        }
        .main-index .pricing-features li {
            padding: 8px 0; color: var(--ink-2); font-size: 0.92rem;
            display: flex; align-items: center; gap: 10px; line-height: 1.45;
        }
        .main-index .pricing-features li i { color: var(--violet); width: 22px; flex-shrink: 0; text-align: center; }
        .main-index .pricing-btn {
            background: linear-gradient(120deg,var(--violet),#9333EA); color: #fff; display: inline-flex;
            align-items: center; justify-content: center; gap: 8px;
            width: 100%; padding: 14px; border-radius: 40px;
            font-weight: 600; font-size: 0.95rem; text-decoration: none; transition: 0.25s;
            border: none; cursor: pointer;
        }
        .main-index .pricing-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(124,58,237,.28); }

        /* ----- 核心服务 services ----- */
        .main-index .services-section { padding: 72px 0 82px; background: #FAF8FF; }
        .main-index .section-header { text-align: center; margin-bottom: 36px; }
        .main-index .section-badge {
            display: inline-block; background: rgba(124,58,237,0.06);
            border: 1px solid var(--line); border-radius: 40px;
            padding: 4px 20px; font-size: 0.8rem; font-weight: 600;
            color: var(--violet); margin-bottom: 8px;
        }
        .main-index .section-title { font-size: 2rem; font-weight: 700; color: var(--ink); }
        .main-index .section-title i { color: var(--violet); margin-right: 8px; }
        .main-index .section-sub { color: var(--ink-2); font-size: 1rem; }

        .main-index .services-flex {
            display: flex;
            align-items: stretch;
            gap: 50px;
            flex-wrap: wrap;
        }
        .main-index .services-left {
            flex: 1.5;
            min-width: 320px;
        }
        .main-index .services-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            height: 100%;
        }
        .main-index .service-card {
            background: #ffffff;
            border-radius: 20px;
            padding: 32px 26px 28px;
            border: 1px solid var(--line);
            transition: 0.3s;
            box-shadow: 0 3px 14px rgba(124,58,237,0.03);
            text-align: center;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .main-index .service-card:hover {
            transform: translateY(-4px);
            border-color: var(--line-strong);
            box-shadow: 0 16px 32px rgba(124,58,237,0.07);
        }
        .main-index .service-card .icon { font-size: 2.6rem; color: var(--violet); margin-bottom: 14px; display: block; }
        .main-index .service-card h3 { font-size: 1.2rem; font-weight: 700; color: var(--ink); }
        .main-index .service-card p { font-size: 0.92rem; color: var(--ink-2); line-height: 1.65; margin-top: 6px; }
        .main-index .service-card .tag {
            display: inline-block;
            background: rgba(6,182,212,0.08);
            padding: 3px 14px;
            border-radius: 30px;
            font-size: 0.7rem;
            color: #0891B2;
            font-weight: 600;
            margin-top: 12px;
            align-self: center;
        }
        .main-index .services-right {
            flex: 1.2;
            min-width: 300px;
            display: flex;
            align-items: stretch;
            justify-content: center;
        }
        .main-index .services-right .showcase-img {
            background: #ffffff;
            border-radius: 20px;
            padding: 10px;
            border: 1px solid var(--line);
            transition: 0.3s;
            width: 100%;
            max-width: 750px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .main-index .services-right .showcase-img:hover {
            border-color: var(--line-strong);
            box-shadow: 0 12px 28px rgba(124,58,237,0.07);
        }
        .main-index .services-right .showcase-img img {
            width: 100%;
            height: auto;
            max-height: 420px;
            border-radius: 12px;
            display: block;
            object-fit: contain;
        }

        /* ----- 下载 download ----- */
        .main-index .download-section { padding: 72px 0 82px; background: #ffffff; border-top: 1px solid var(--line); }
        .main-index .download-header { text-align: center; margin-bottom: 34px; }
        .main-index .download-header .badge {
            display: inline-block; background: rgba(6,182,212,0.08);
            border: 1px solid rgba(6,182,212,0.14); border-radius: 40px;
            padding: 4px 18px; font-size: 0.8rem; font-weight: 600;
            color: #0891B2; margin-bottom: 8px;
        }
        .main-index .download-header h2 { font-size: 2.2rem; font-weight: 700; color: var(--ink); }
        .main-index .download-header h2 i { color: var(--violet); margin-right: 8px; }
        .main-index .download-header p { color: var(--ink-2); font-size: 1rem; }
        .main-index .download-grid {
            display: grid; grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .main-index .download-card {
            background: var(--violet-soft); border-radius: 20px; padding: 28px 20px 24px;
            text-align: center; border: 1px solid var(--line);
            transition: 0.3s;
        }
        .main-index .download-card:hover {
            transform: translateY(-4px); border-color: var(--line-strong);
            box-shadow: 0 16px 32px rgba(124,58,237,0.08);
        }
        .main-index .download-card .icon-wrap { font-size: 2.8rem; color: var(--violet); margin-bottom: 10px; display: block; }
        .main-index .download-card h3 { font-size: 1.2rem; font-weight: 700; color: var(--ink); }
        .main-index .download-card .version { font-size: 0.75rem; color: #7C7AA0; }
        .main-index .download-card .desc { font-size: 0.88rem; color: var(--ink-2); margin: 10px 0 16px; min-height: 40px; }
        .main-index .download-card .btn-download {
            display: inline-flex; align-items: center; gap: 8px;
            background: linear-gradient(120deg,var(--violet),#9333EA); color: #fff; padding: 10px 26px;
            border-radius: 40px; font-weight: 600; font-size: 0.88rem;
            text-decoration: none; transition: 0.3s;
            box-shadow: 0 6px 16px rgba(124,58,237,0.18);
        }
        .main-index .download-card .btn-download:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(124,58,237,0.28); }
        .main-index .download-card .badge-hot {
            font-size: 0.65rem; font-weight: 700; color: #0891B2;
            background: rgba(6,182,212,0.09); padding: 2px 12px;
            border-radius: 30px; display: inline-block; margin-bottom: 6px;
        }
        .main-index .download-footer { text-align: center; margin-top: 28px; color: #7C7AA0; font-size: 0.9rem; }
        .main-index .download-footer i { color: var(--violet); }

        /* ----- 技术优势 tech ----- */
        .main-index .tech-section { padding: 72px 0 82px; background: #FAF8FF; border-top: 1px solid var(--line); }
        .main-index .tech-flex {
            display: flex;
            align-items: flex-start;
            gap: 50px;
            flex-wrap: wrap;
        }
        .main-index .tech-left {
            flex: 1.3;
            min-width: 320px;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            padding-top: 80px;
        }
        .main-index .tech-left .showcase-img {
            background: #ffffff;
            border-radius: 20px;
            padding: 12px;
            border: 1px solid var(--line);
            transition: 0.3s;
            width: 100%;
            max-width: 700px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .main-index .tech-left .showcase-img:hover {
            border-color: var(--line-strong);
            box-shadow: 0 12px 28px rgba(124,58,237,0.07);
        }
        .main-index .tech-left .showcase-img img {
            width: 100%;
            height: auto;
            max-height: 450px;
            border-radius: 12px;
            display: block;
            object-fit: contain;
        }
        .main-index .tech-right {
            flex: 1.1;
            min-width: 320px;
        }
        .main-index .tech-right .section-header { text-align: left; margin-bottom: 24px; }
        .main-index .tech-right .tech-grid {
            display: grid; grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .main-index .tech-item {
            background: #ffffff; border-radius: 16px; padding: 24px 20px 20px;
            text-align: center; border: 1px solid var(--line);
            transition: 0.3s;
        }
        .main-index .tech-item:hover { transform: translateY(-4px); border-color: var(--line-strong); }
        .main-index .tech-item i { font-size: 2rem; color: var(--violet); margin-bottom: 8px; display: block; }
        .main-index .tech-item h4 { font-size: 1rem; font-weight: 700; color: var(--ink); }
        .main-index .tech-item p { font-size: 0.85rem; color: var(--ink-2); }

        /* ----- 认证 cert ----- */
        .main-index .cert-section { padding: 72px 0 82px; background: #ffffff; border-top: 1px solid var(--line); }
        .main-index .cert-grid {
            display: flex; flex-wrap: wrap; gap: 40px;
            justify-content: center; align-items: stretch;
        }
        .main-index .cert-card {
            background: linear-gradient(150deg,#F8F5FF,#EFFAFF); border-radius: 24px; padding: 32px 34px 34px;
            border: 1px solid var(--line);
            transition: 0.3s; flex: 1 1 300px;
            display: flex; flex-direction: column; align-items: center;
            text-align: center;
        }
        .main-index .cert-card:hover {
            transform: translateY(-4px); border-color: var(--line-strong);
            box-shadow: 0 18px 36px rgba(124,58,237,0.08);
        }
        .main-index .cert-card .cert-title {
            font-size: 1.2rem; font-weight: 700; color: var(--ink);
            margin-top: 8px;
        }
        .main-index .cert-card .cert-desc {
            font-size: 0.95rem; color: var(--ink-2); line-height: 1.75;
            margin-top: 6px;
        }
        .main-index .cert-card .cert-desc strong { color: var(--violet); }
        .main-index .cert-card .cert-tags {
            display: flex; flex-wrap: wrap; gap: 10px;
            margin-top: 14px; justify-content: center;
        }
        .main-index .cert-card .cert-tags span {
            background: rgba(124,58,237,0.06); border: 1px solid var(--line);
            border-radius: 30px; padding: 3px 18px;
            font-size: 0.75rem; font-weight: 600; color: var(--violet);
        }
        .main-index .cert-card .cert-badges {
            display: flex; flex-wrap: wrap; gap: 12px;
            justify-content: center; margin-top: 12px;
        }
        .main-index .cert-card .cert-badges .badge-item {
            background: rgba(124,58,237,0.04); border-radius: 12px;
            padding: 3px 16px; border: 1px solid var(--line);
            font-size: 0.75rem; font-weight: 600; color: var(--ink);
            display: flex; align-items: center; gap: 8px;
        }
        .main-index .cert-card .cert-badges .badge-item i { color: var(--cyan); }

        /* ----- 用户口碑 reviews ----- */
        .main-index .reviews-section { padding: 62px 0 72px; background: #FAF8FF; }
        .main-index .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .main-index .review-card {
            background: #ffffff;
            border-radius: 20px;
            padding: 28px 24px 24px;
            border: 1px solid var(--line);
            transition: 0.3s;
            box-shadow: 0 3px 14px rgba(124,58,237,0.03);
            display: flex;
            flex-direction: column;
        }
        .main-index .review-card:hover {
            transform: translateY(-4px);
            border-color: var(--line-strong);
            box-shadow: 0 16px 32px rgba(124,58,237,0.07);
        }
        .main-index .review-card .stars {
            color: #F5A623;
            font-size: 0.9rem;
            letter-spacing: 2px;
            margin-bottom: 6px;
            flex-shrink: 0;
        }
        .main-index .review-card .text {
            font-size: 0.95rem;
            color: var(--ink);
            line-height: 1.75;
            flex: 1;
        }
        .main-index .review-card .author {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--line);
            flex-shrink: 0;
        }
        .main-index .review-card .author .avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            flex-shrink: 0;
            overflow: hidden;
            border: 2px solid rgba(124,58,237,0.10);
        }
        .main-index .review-card .author .avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .main-index .review-card .author .info .name {
            font-weight: 600;
            color: var(--ink);
            font-size: 0.9rem;
        }
        .main-index .review-card .author .info .location {
            font-size: 0.75rem;
            color: #7C7AA0;
        }
        .main-index .review-card .badge-verified {
            display: inline-block;
            background: rgba(34,197,94,0.09);
            color: #16A34A;
            font-size: 0.6rem;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 30px;
            margin-top: 4px;
            flex-shrink: 0;
            align-self: flex-start;
        }
        .main-index .review-card .badge-verified i { margin-right: 4px; }

        /* ----- 知识库 knowledge ----- */
        .main-index .knowledge-section { padding: 72px 0 82px; background: #ffffff; border-top: 1px solid var(--line); }
        .main-index .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .main-index .knowledge-card {
            background: var(--violet-soft); border-radius: 20px; overflow: hidden;
            border: 1px solid var(--line); transition: 0.3s;
            box-shadow: 0 3px 14px rgba(124,58,237,0.03);
            display: flex;
            flex-direction: column;
        }
        .main-index .knowledge-card:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: 0 16px 32px rgba(124,58,237,0.08); }
        .main-index .knowledge-card .knowledge-img {
            width: 100%; height: 180px; background: #EDE7FF;
            display: flex; align-items: center; justify-content: center; overflow: hidden;
        }
        .main-index .knowledge-card .knowledge-img img {
            width: 100%; height: 100%; object-fit: cover; display: block;
        }
        .main-index .knowledge-body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
        .main-index .knowledge-body h4 { font-size: 1rem; font-weight: 700; color: var(--ink); line-height: 1.35; margin-bottom: 6px; }
        .main-index .knowledge-body h4 a { color: var(--ink); text-decoration: none; }
        .main-index .knowledge-body h4 a:hover { color: var(--violet); }
        .main-index .knowledge-body p { font-size: 0.88rem; color: var(--ink-2); margin-bottom: 10px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .main-index .knowledge-body .meta {
            font-size: 0.75rem; color: #7C7AA0; display: flex;
            align-items: center; justify-content: space-between;
            padding-top: 8px; border-top: 1px solid var(--line);
        }
        .main-index .knowledge-body .meta a { color: var(--violet); text-decoration: none; font-weight: 500; }

        /* ----- 代理合作 partner-cta ----- */
        .main-index .partner-cta-wrap {
            padding: 62px 0 72px;
            background: #FAF8FF;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .main-index .partner-cta-box {
            background: linear-gradient(125deg, #5B21B6, #7C3AED 46%, #0891B2);
            border-radius: 28px; padding: 32px 38px;
            display: flex; flex-wrap: wrap; align-items: center;
            justify-content: space-between; gap: 18px;
            box-shadow: 0 20px 44px -10px rgba(124,58,237,0.32);
            margin: 0 auto;
        }
        .main-index .cta-info h3 { font-size: 1.3rem; font-weight: 700; color: #fff; display: flex; align-items: center; gap: 10px; }
        .main-index .cta-info p { color: rgba(255,255,255,0.82); font-size: 0.9rem; }
        .main-index .cta-contact { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 6px; font-size: 0.8rem; color: rgba(255,255,255,0.72); }
        .main-index .btn-partner-apply {
            background: #fff; color: var(--violet); padding: 12px 32px;
            border-radius: 60px; font-weight: 700; font-size: 0.95rem;
            text-decoration: none; display: inline-flex; align-items: center;
            gap: 8px; transition: 0.3s; border: none; cursor: pointer;
            box-shadow: 0 6px 18px rgba(0,0,0,0.08); flex-shrink: 0;
        }
        .main-index .btn-partner-apply:hover { transform: translateY(-2px); background: #F6F1FF; }

        /* ----- FAQ ----- */
        .main-index .faq-section { padding: 52px 0 72px; background: #FAF8FF; border-top: 1px solid var(--line); }
        .main-index .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
            align-items: stretch;
        }
        .main-index .faq-item {
            background: #ffffff;
            border-radius: 16px;
            padding: 24px 28px;
            border: 1px solid var(--line);
            transition: 0.3s;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .main-index .faq-item:hover { border-color: var(--line-strong); box-shadow: 0 10px 24px rgba(124,58,237,0.05); }
        .main-index .faq-item .q {
            font-weight: 700;
            font-size: 1rem;
            color: var(--ink);
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .main-index .faq-item .q i {
            color: var(--violet);
            font-size: 0.8rem;
            width: 20px;
            flex-shrink: 0;
        }
        .main-index .faq-item .a {
            margin-top: 10px;
            color: var(--ink-2);
            font-size: 0.92rem;
            line-height: 1.8;
            flex: 1;
        }
        .main-index .faq-item .a .step {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-top: 6px;
            padding-left: 4px;
        }
        .main-index .faq-item .a .step:first-child { margin-top: 0; }
        .main-index .faq-item .a .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 22px;
            height: 22px;
            background: linear-gradient(130deg,var(--violet),#9333EA);
            color: #fff;
            border-radius: 50%;
            font-size: 0.7rem;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .main-index .faq-item .a .step-text { flex: 1; }
        .main-index .faq-item .a strong { color: var(--ink); }

        /* ============================================================
           📱 响应式
           ============================================================ */
        @media (max-width: 1024px) {
            .container { padding: 0 30px; }
            .main-index .hero h1 { font-size: 2.6rem; }
            .main-index .brand-intro-grid { grid-template-columns: 1fr; text-align: center; }
            .main-index .brand-intro-grid .brand-intro-image { order: -1; }
            .main-index .brand-intro-image { min-height: 200px; }
            .main-index .brand-intro-text { min-height: auto; }
            .main-index .intro-grid { grid-template-columns: 1fr; text-align: center; }
            .main-index .intro-text { min-height: auto; }
            .main-index .intro-stats { max-width: 500px; margin: 0 auto; }
            .main-index .services-flex { flex-direction: column; text-align: center; }
            .main-index .services-grid { grid-template-columns: 1fr 1fr; }
            .main-index .services-right { width: 100%; }
            .main-index .services-right .showcase-img { max-width: 100%; }
            .main-index .download-grid { grid-template-columns: 1fr 1fr; }
            .main-index .reviews-grid { grid-template-columns: repeat(2, 1fr); }
            .main-index .knowledge-grid { grid-template-columns: repeat(2, 1fr); }
            .main-index .tech-flex { flex-direction: column; text-align: center; }
            .main-index .tech-right .section-header { text-align: center; }
            .main-index .tech-right .tech-grid { grid-template-columns: 1fr 1fr; }
            .main-index .tech-left { width: 100%; padding-top: 0; }
            .main-index .tech-left .showcase-img { max-width: 100%; }
            .main-index .cert-grid { flex-direction: column; align-items: center; }
            .main-index .cert-card { max-width: 100%; width: 100%; }
            .footer .footer-grid { grid-template-columns: 1fr 1fr; }
            .main-index .partner-cta-box { flex-direction: column; text-align: center; padding: 26px; }
            .main-index .cta-contact { justify-content: center; }
            .main-index .btn-partner-apply { width: 100%; justify-content: center; }
            .main-index .faq-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .container { max-width: 100%; padding: 0 20px; }
            .nav-inner { flex-direction: row; flex-wrap: wrap; }
            .hamburger { display: block; }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 12px;
                padding: 16px 0 8px;
                border-top: 1px solid var(--line);
                margin-top: 4px;
                align-items: center;
            }
            .nav-links.active { display: flex; }
            .nav-links a { font-size: 1rem; }
            .btn-nav { width: 100%; text-align: center; justify-content: center; }
            .main-index .hero-grid { flex-direction: column; text-align: center; }
            .main-index .hero-left { min-width: unset; }
            .main-index .hero-right { min-width: unset; justify-content: center; }
            .main-index .hero h1 { font-size: 2.2rem; }
            .main-index .hero-desc { margin: 0 auto; }
            .main-index .hero-actions { justify-content: center; }
            .main-index .hero-platforms { justify-content: center; }
            .main-index .brand-intro-grid { grid-template-columns: 1fr; text-align: center; }
            .main-index .brand-intro-grid .brand-intro-image { order: -1; }
            .main-index .brand-intro-image { min-height: 160px; }
            .main-index .intro-grid { grid-template-columns: 1fr; text-align: center; }
            .main-index .services-grid { grid-template-columns: 1fr; }
            .main-index .download-grid { grid-template-columns: 1fr 1fr; }
            .main-index .tech-right .tech-grid { grid-template-columns: 1fr 1fr; }
            .main-index .reviews-grid { grid-template-columns: 1fr; }
            .main-index .knowledge-grid { grid-template-columns: 1fr; }
            .main-index .cert-grid { flex-direction: column; align-items: center; }
            .main-index .cert-card { max-width: 100%; }
            .footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer .footer-bottom { flex-direction: column; text-align: center; }
            .main-index .partner-cta-box { flex-direction: column; text-align: center; padding: 26px; }
            .main-index .cta-contact { justify-content: center; }
            .main-index .btn-partner-apply { width: 100%; justify-content: center; }
            .main-index .faq-grid { grid-template-columns: 1fr; }
            .main-index .faq-item { padding: 20px; }
            .back-to-top { bottom: 20px; right: 20px; width: 44px; height: 44px; font-size: 1rem; }
        }
        @media (max-width: 480px) {
            .container { max-width: 100%; padding: 0 14px; }
            .main-index .hero h1 { font-size: 1.8rem; }
            .main-index .download-grid { grid-template-columns: 1fr; }
            .main-index .tech-right .tech-grid { grid-template-columns: 1fr; }
            .main-index .hero-image-single .img-wrapper img { max-height: 200px; max-width: 280px; }
            .btn-primary, .btn-outline { padding: 12px 24px; font-size: 0.9rem; }
            .footer .footer-grid { grid-template-columns: 1fr; gap: 24px; text-align: center; }
            .footer .brand-col p { max-width: 100%; }
            .main-index .cert-card { padding: 20px 16px; }
            .main-index .services-right .showcase-img img { max-height: 280px; }
            .main-index .tech-left .showcase-img img { max-height: 300px; }
            .main-index .services-right .showcase-img { max-width: 100%; }
            .main-index .brand-intro-text .brand-tags { justify-content: center; }
            .main-index .partner-cta-box { padding: 20px 16px; }
            .main-index .faq-item { padding: 16px; }
            .main-index .faq-item .a .step { flex-direction: column; gap: 4px; }
            .main-index .reviews-grid { grid-template-columns: 1fr; }
            .back-to-top { bottom: 16px; right: 16px; width: 40px; height: 40px; font-size: 0.9rem; }
        }