/* ========== 完整 CSS（复用旧版，已整合网格布局） ========== */
        :root {
            --bg-primary: #000000;
            --bg-secondary: #1d1d1f;
            --bg-tertiary: #f5f5f7;
            --text-primary: #f5f5f7;
            --text-secondary: #a1a1a6;
            --text-dark: #1d1d1f;
            --accent-blue: #0071e3;
            --accent-blue-hover: #0077ed;
            --accent-gradient: linear-gradient(135deg, #0071e3 0%, #5ac8fa 100%);
            --glass-bg: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.15);
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 24px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.15);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.3);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
            --shadow-xl: 0 30px 80px rgba(0,0,0,0.6);
            --transition-fast: 0.2s cubic-bezier(0.25,0.1,0.25,1);
            --transition-smooth: 0.4s cubic-bezier(0.25,0.1,0.25,1);
            --font-system: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue",
                "PingFang SC", "Microsoft YaHei", sans-serif;
            --max-width: 1200px;
            --section-padding: 100px 20px;
            --danger-red: #ff3b30;
            --success-green: #34c759;
        }
        * { margin:0; padding:0; box-sizing:border-box; }
        html { scroll-behavior:smooth; font-size:16px; }
        body { font-family:var(--font-system); background-color:var(--bg-primary); color:var(--text-primary); line-height:1.5; -webkit-font-smoothing:antialiased; overflow-x:hidden; }
        .container { max-width:var(--max-width); margin:0 auto; padding:0 20px; width:100%; }
        .section-label { font-size:0.85rem; font-weight:600; letter-spacing:0.05em; text-transform:uppercase; color:var(--accent-blue); margin-bottom:12px; }
        .section-title { font-size:clamp(2.5rem,5vw,3.5rem); font-weight:700; letter-spacing:-0.02em; line-height:1.1; margin-bottom:16px; color:var(--text-primary); }
        .section-subtitle { font-size:1.2rem; font-weight:400; color:var(--text-secondary); max-width:600px; margin-bottom:48px; line-height:1.6; }
        .section-title-dark { color:var(--text-dark); }
        .section-subtitle-dark { color:#6e6e73; }
        .btn { display:inline-flex; align-items:center; gap:8px; padding:14px 28px; border-radius:50px; font-size:0.95rem; font-weight:500; cursor:pointer; border:none; transition:all var(--transition-fast); text-decoration:none; white-space:nowrap; font-family:var(--font-system); }
        .btn-primary { background:var(--accent-blue); color:#fff; }
        .btn-primary:hover { background:var(--accent-blue-hover); transform:translateY(-1px); box-shadow:0 8px 25px rgba(0,113,227,0.4); }
        .btn-outline { background:transparent; color:var(--accent-blue); border:1.5px solid var(--accent-blue); }
        .btn-outline:hover { background:var(--accent-blue); color:#fff; }
        .btn-light { background:rgba(255,255,255,0.15); color:#fff; backdrop-filter:blur(10px); border:1px solid rgba(255,255,255,0.25); }
        .btn-light:hover { background:rgba(255,255,255,0.25); }

        /* 导航栏 */
        .navbar { position:fixed; top:0; left:0; width:100%; z-index:1000; padding:16px 0; transition:all var(--transition-smooth); background:rgba(0,0,0,0.8); backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px); border-bottom:1px solid rgba(255,255,255,0.08); }
        .navbar .container { display:flex; align-items:center; justify-content:space-between; }
        .logo { display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--text-primary); font-weight:700; font-size:1.3rem; letter-spacing:-0.02em; }
        .logo i { font-size:1.6rem; color:var(--accent-blue); }
        .nav-links { display:flex; list-style:none; gap:32px; align-items:center; }
        .nav-links a, .nav-links .nav-btn { text-decoration:none; color:var(--text-secondary); font-size:0.9rem; font-weight:400; transition:color var(--transition-fast); background:none; border:none; cursor:pointer; font-family:var(--font-system); padding:0; }
        .nav-links a:hover, .nav-links .nav-btn:hover { color:var(--text-primary); }
        /* 会员登录按钮 —— 完全清除任何阴影/边框/轮廓 */
		.nav-cta {
		    background: var(--accent-blue) !important;
		    color: #fff !important;
		    padding: 8px 20px !important;
		    border-radius: 50px;
		    font-weight: 500;
		    border: none !important;                /* 防止残留边框 */
		    outline: none !important;               /* 去除聚焦轮廓 */
		    box-shadow: none !important;            /* 杀死所有阴影 */
		    -webkit-appearance: none;               /* 针对 Webkit 内核浏览器 */
		    -moz-appearance: none;
		    appearance: none;
		    transition: background var(--transition-fast), transform var(--transition-fast);
		}
		
		.nav-cta:hover {
		    background: var(--accent-blue-hover) !important;
		    transform: translateY(-1px);
		    box-shadow: none !important;            /* 悬停也不留阴影 */
		    outline: none !important;
		}
		
		.nav-cta:focus,
		.nav-cta:active {
		    outline: none !important;
		    box-shadow: none !important;
		}
		
		/* 顺便把导航栏所有按钮的默认轮廓也关掉，避免意外 */
		.nav-links button {
		    outline: none !important;
		    box-shadow: none !important;
		}
        .hamburger { display:none; background:none; border:none; color:var(--text-primary); font-size:1.5rem; cursor:pointer; padding:8px; }

        /* Hero */
        .hero { min-height:100vh; display:flex; align-items:center; justify-content:center; text-align:center; position:relative; overflow:hidden; padding:120px 20px 80px; background:radial-gradient(ellipse at 50% 40%, #1a1a2e 0%, #000000 70%); }
        .hero::before { content:''; position:absolute; top:-50%; left:-50%; width:200%; height:200%; background:radial-gradient(circle at 50% 50%, rgba(0,113,227,0.08) 0%, transparent 60%); animation:heroPulse 8s ease-in-out infinite; }
        @keyframes heroPulse { 0%,100% { transform:scale(1); opacity:0.6; } 50% { transform:scale(1.1); opacity:1; } }
        .hero-content { position:relative; z-index:2; max-width:800px; }
        .hero-badge { display:inline-block; background:var(--glass-bg); backdrop-filter:blur(10px); border:1px solid var(--glass-border); border-radius:50px; padding:8px 20px; font-size:0.85rem; color:var(--text-secondary); margin-bottom:24px; }
        .hero-badge i { color:var(--accent-blue); margin-right:6px; }
        .hero h1 { font-size:clamp(3rem,7vw,5rem); font-weight:700; letter-spacing:-0.03em; line-height:1.05; margin-bottom:20px; }
        .hero h1 span { background:var(--accent-gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
        .hero p { font-size:clamp(1.1rem,2vw,1.35rem); color:var(--text-secondary); max-width:550px; margin:0 auto 32px; }
        .hero-buttons { display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
        .hero-stats { display:flex; gap:48px; justify-content:center; margin-top:60px; }
        .hero-stat { text-align:center; }
        .hero-stat-number { font-size:2.5rem; font-weight:700; color:var(--text-primary); }
        .hero-stat-label { font-size:0.85rem; color:var(--text-secondary); margin-top:4px; }

        /* 板块通用 */
        .section-why, .section-features, .section-pricing { padding:var(--section-padding); background:var(--bg-primary); }
        .section-advantages, .section-reasons, .section-contact { padding:var(--section-padding); background:var(--bg-tertiary); color:var(--text-dark); }
        .cards-grid, .advantages-grid, .features-grid, .reasons-grid { display:grid; gap:24px; }
        .cards-grid { grid-template-columns:repeat(auto-fit, minmax(260px,1fr)); }
        .advantages-grid { grid-template-columns:repeat(auto-fit, minmax(280px,1fr)); }
        .features-grid { grid-template-columns:repeat(auto-fit, minmax(320px,1fr)); }
        .reasons-grid { grid-template-columns:repeat(auto-fit, minmax(280px,1fr)); }

        .card, .advantage-card, .reason-card { background:var(--bg-secondary); border-radius:var(--radius-md); padding:32px 28px; border:1px solid rgba(255,255,255,0.06); transition:all var(--transition-smooth); }
        .card:hover, .advantage-card:hover, .reason-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-md); }
        .advantage-card, .reason-card { background:#fff; box-shadow:var(--shadow-sm); border:1px solid rgba(0,0,0,0.06); }
        .card-icon, .feature-icon, .reason-card .card-icon { width:52px; height:52px; border-radius:var(--radius-sm); display:flex; align-items:center; justify-content:center; font-size:1.4rem; margin-bottom:20px; background:var(--glass-bg); color:var(--accent-blue); border:1px solid var(--glass-border); }
        .card h3, .feature-text h4 { font-size:1.25rem; font-weight:600; margin-bottom:10px; }
        .card p, .feature-text p { font-size:0.95rem; color:var(--text-secondary); }

        /* 定价卡片（4列网格） */
        .pricing-grid { display:grid; grid-template-columns:repeat(4, 1fr); gap:24px; align-items:stretch; }
        .pricing-card { background:var(--bg-secondary); border-radius:var(--radius-lg); padding:40px 28px; border:1px solid rgba(255,255,255,0.08); transition:all var(--transition-smooth); display:flex; flex-direction:column; position:relative; }
        .pricing-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-lg); border-color:rgba(255,255,255,0.2); }
        .pricing-card.featured { background:linear-gradient(135deg, rgba(0,113,227,0.2) 0%, rgba(90,200,250,0.1) 100%); border-color:rgba(0,113,227,0.4); transform:scale(1.03); }
        .pricing-card.featured:hover { transform:scale(1.03) translateY(-6px); }
        .pricing-badge { position:absolute; top:-14px; left:50%; transform:translateX(-50%); background:var(--accent-blue); color:#fff; padding:6px 20px; border-radius:50px; font-size:0.8rem; font-weight:600; }
        .pricing-name { font-size:1.3rem; font-weight:600; margin-bottom:16px; }
        .pricing-price { font-size:3rem; font-weight:700; letter-spacing:-0.03em; margin-bottom:4px; }
        .pricing-price span { font-size:1rem; font-weight:400; color:var(--text-secondary); }
        .pricing-period { font-size:0.9rem; color:var(--text-secondary); margin-bottom:24px; }
        .pricing-features { list-style:none; text-align:left; margin-bottom:28px; flex-grow:1; }
        .pricing-features li { padding:8px 0; font-size:0.9rem; color:var(--text-secondary); border-bottom:1px solid rgba(255,255,255,0.06); display:flex; align-items:center; gap:10px; }
        .pricing-features li i { color:#30d158; font-size:0.85rem; }
        .pricing-card .btn { width:100%; justify-content:center; }

        /* 其他板块 */
        .principle-content { max-width:800px; margin:0 auto; text-align:center; }
        .principle-quote { font-size:clamp(1.6rem,3vw,2rem); font-weight:600; line-height:1.4; color:var(--text-primary); margin-bottom:24px; }
        .principle-description { font-size:1.05rem; color:var(--text-secondary); line-height:1.7; margin-bottom:48px; }
        .difficulty-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:40px; }
        .difficulty-card { background:var(--bg-secondary); border-radius:var(--radius-md); padding:28px 24px; border:1px solid rgba(255,255,255,0.06); transition:all var(--transition-smooth); }
        .difficulty-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); }
        .difficulty-stars { color:#ffd60a; font-size:1.2rem; margin-bottom:12px; letter-spacing:2px; }
        .difficulty-card h4 { font-size:1.1rem; font-weight:600; margin-bottom:8px; }
        .difficulty-card p { font-size:0.9rem; color:var(--text-secondary); }

        .contact-card { max-width:500px; margin:0 auto; background:#fff; border-radius:var(--radius-lg); padding:40px 32px; box-shadow:var(--shadow-sm); border:1px solid rgba(0,0,0,0.06); text-align:center; }
        .contact-info { display:flex; flex-direction:column; gap:20px; margin-bottom:28px; }
        .contact-item { display:flex; align-items:center; gap:16px; color:var(--text-dark); font-size:1rem; }
        .contact-item i { width:44px; height:44px; border-radius:50%; background:rgba(0,113,227,0.08); color:var(--accent-blue); display:flex; align-items:center; justify-content:center; font-size:1.1rem; flex-shrink:0; }
        .qr-code { width:140px; height:140px; background:#e0e0e0; border-radius:var(--radius-md); margin:0 auto 12px; display:flex; align-items:center; justify-content:center; font-size:4rem; color:#1d1d1f; }
        .qr-label { font-size:0.85rem; color:#6e6e73; }

        .footer { background:var(--bg-secondary); padding:48px 20px 24px; border-top:1px solid rgba(255,255,255,0.08); }
        .footer-content { display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:20px; max-width:var(--max-width); margin:0 auto; }
        .footer-logo { display:flex; align-items:center; gap:8px; font-weight:600; font-size:1.1rem; }
        .footer-logo i { color:var(--accent-blue); }
        .footer-links { display:flex; gap:24px; flex-wrap:wrap; }
        .footer-links a { color:var(--text-secondary); text-decoration:none; font-size:0.85rem; }
        .footer-links a:hover { color:var(--text-primary); }
        .footer-bottom { text-align:center; color:var(--text-secondary); font-size:0.8rem; margin-top:32px; padding-top:20px; border-top:1px solid rgba(255,255,255,0.06); max-width:var(--max-width); margin:0 auto; }

        /* 模态框 */
        .modal-overlay { position:fixed; top:0; left:0; width:100%; height:100%; background:rgba(0,0,0,0.7); backdrop-filter:blur(8px); z-index:9999; display:flex; align-items:center; justify-content:center; opacity:0; visibility:hidden; transition:0.35s; }
        .modal-overlay.active { opacity:1; visibility:visible; }
        .modal-dialog { background:#1c1c1e; border-radius:var(--radius-xl); width:90%; max-width:440px; box-shadow:var(--shadow-xl); border:1px solid rgba(255,255,255,0.12); transform:translateY(30px) scale(0.95); transition:0.4s; }
        .modal-overlay.active .modal-dialog { transform:translateY(0) scale(1); }
        .modal-header { padding:24px 28px 16px; display:flex; justify-content:space-between; border-bottom:1px solid rgba(255,255,255,0.08); }
        .modal-header h3 { font-size:1.3rem; font-weight:600; }
        .modal-close { width:36px; height:36px; border-radius:50%; border:none; background:rgba(255,255,255,0.1); color:var(--text-primary); cursor:pointer; }
        .modal-body { padding:24px 28px; }
        .modal-body p.modal-subtitle { font-size:0.9rem; color:var(--text-secondary); margin-bottom:20px; }
        .plan-summary { background:rgba(255,255,255,0.05); border-radius:var(--radius-sm); padding:16px 20px; margin-bottom:20px; display:flex; justify-content:space-between; align-items:center; border:1px solid rgba(255,255,255,0.08); }
        .plan-summary .plan-name { font-weight:600; font-size:0.95rem; }
        .plan-summary .plan-price-modal { font-size:1.4rem; font-weight:700; color:var(--accent-blue); }
        .form-group { margin-bottom:16px; }
        .form-group label { display:block; font-size:0.85rem; font-weight:500; color:var(--text-secondary); margin-bottom:6px; }
        .input-wrapper { display:flex; align-items:center; gap:10px; }
        .input-wrapper input { flex:1; background:rgba(255,255,255,0.06); border:1.5px solid rgba(255,255,255,0.12); border-radius:var(--radius-sm); padding:14px 16px; color:var(--text-primary); outline:none; }
        .input-wrapper select { flex:1; background:rgba(255,255,255,0.06); border:1.5px solid rgba(255,255,255,0.12); border-radius:var(--radius-sm); padding:12px 14px; color:var(--text-primary); outline:none; cursor:pointer; min-width:0; }
        .input-wrapper select option { background:#2c2c2e; color:var(--text-primary); }
        .btn-send-code { background:transparent; border:1.5px solid var(--accent-blue); color:var(--accent-blue); padding:14px 18px; border-radius:var(--radius-sm); cursor:pointer; }
        .btn-submit, .btn-pay { width:100%; padding:15px; border:none; border-radius:50px; font-size:1rem; font-weight:600; cursor:pointer; margin-top:8px; }
        .btn-submit { background:var(--accent-blue); color:#fff; }
        .btn-pay { background:var(--success-green); color:#fff; }
        .toast { position:fixed; top:20px; left:50%; transform:translateX(-50%) translateY(-120px); background:var(--bg-secondary); color:var(--text-primary); padding:14px 24px; border-radius:50px; z-index:99999; box-shadow:var(--shadow-lg); transition:0.4s; }
        .toast.show { transform:translateX(-50%) translateY(0); }
        .payment-confirm { text-align:center; }
        .payment-icon { width:64px; height:64px; border-radius:50%; background:rgba(0,113,227,0.12); display:flex; align-items:center; justify-content:center; font-size:1.8rem; color:var(--accent-blue); margin:0 auto 16px; }
        .payment-amount { font-size:2.8rem; font-weight:700; }
        .payment-amount span { font-size:1rem; font-weight:400; color:var(--text-secondary); }
        .payment-plan-name { color:var(--text-secondary); margin-bottom:20px; font-size:0.95rem; }
        .divider-text { display:flex; align-items:center; gap:12px; color:var(--text-secondary); font-size:0.8rem; margin:16px 0; }
        .divider-text::before, .divider-text::after { content:''; flex:1; height:1px; background:rgba(255,255,255,0.12); }
        .btn-back { background:transparent; border:none; color:var(--accent-blue); font-size:0.9rem; cursor:pointer; margin-top:12px; }
        .login-logo { display:flex; align-items:center; justify-content:center; gap:10px; margin-bottom:20px; font-size:1.4rem; font-weight:700; }
        .login-logo i { color:var(--accent-blue); font-size:1.8rem; }
        .error-message { font-size:0.78rem; color:var(--danger-red); margin-top:4px; }

        /* 公司搜索下拉框样式 */
        .company-search-wrapper { position: relative; flex: 1; }
        .company-search-wrapper input { width: 100%; }
        .company-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            max-height: 260px;
            overflow-y: auto;
            background: #2c2c2e;
            border: 1.5px solid var(--accent-blue);
            border-top: none;
            border-radius: 0 0 12px 12px;
            box-shadow: 0 12px 32px rgba(0,0,0,0.5);
            z-index: 99999;
        }
        .company-dropdown-item {
            padding: 10px 14px;
            cursor: pointer;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background 0.15s;
        }
        .company-dropdown-item:last-child { border-bottom: none; }
        .company-dropdown-item:hover,
        .company-dropdown-item.active { background: rgba(0,113,227,0.15); }
        .company-dropdown-item .cname {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .company-dropdown-item .cinfo {
            font-size: 11px;
            color: var(--text-secondary);
            margin-top: 2px;
        }
        .company-dropdown-item .cinfo span { margin-right: 10px; }
        .company-dropdown-empty {
            padding: 16px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 12px;
        }
        .company-dropdown-loading {
            padding: 14px;
            text-align: center;
            color: var(--accent-blue);
            font-size: 12px;
        }


 /* ========== 板块通用样式 ========== */
        .section-why {
            padding: var(--section-padding);
            background: var(--bg-primary);
        }
        .section-why .section-label,
        .section-why .section-title,
        .section-why .section-subtitle {
            text-align: center;
        }
        .section-why .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .card {
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, 0.18);
            box-shadow: var(--shadow-md);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 20px;
            background: var(--glass-bg);
            color: var(--accent-blue);
            border: 1px solid var(--glass-border);
        }
        .card h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .card-highlight {
            background: linear-gradient(135deg, rgba(0, 113, 227, 0.15) 0%, rgba(90, 200, 250, 0.08) 100%);
            border-color: rgba(0, 113, 227, 0.3);
        }

        .section-principle {
            padding: var(--section-padding);
            background: var(--bg-primary);
            text-align: center;
        }
        .principle-content {
            max-width: 800px;
            margin: 0 auto;
        }
        .principle-quote {
            font-size: clamp(1.6rem, 3vw, 2rem);
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-primary);
            margin-bottom: 24px;
            letter-spacing: -0.01em;
        }
        .principle-description {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 48px;
        }
        .difficulty-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .difficulty-card {
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-smooth);
        }
        .difficulty-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .difficulty-stars {
            color: #ffd60a;
            font-size: 1.2rem;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }
        .difficulty-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .difficulty-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .section-advantages {
            padding: var(--section-padding);
            background: var(--bg-tertiary);
            color: var(--text-dark);
        }
        .section-advantages .section-subtitle {
            color: #6e6e73;
        }
        .section-advantages .section-title {
            color: var(--text-dark);
        }
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .advantage-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            border: 1px solid rgba(0, 0, 0, 0.06);
        }
        .advantage-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
        }
        .advantage-card .card-icon {
            background: rgba(0, 113, 227, 0.08);
            color: var(--accent-blue);
            border: none;
        }
        .advantage-card h3 {
            color: var(--text-dark);
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .advantage-card p {
            color: #6e6e73;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .section-features {
            padding: var(--section-padding);
            background: var(--bg-primary);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 20px;
        }
        .feature-item {
            display: flex;
            gap: 20px;
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            padding: 28px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-smooth);
        }
        .feature-item:hover {
            transform: translateY(-3px);
            border-color: rgba(255, 255, 255, 0.15);
            box-shadow: var(--shadow-md);
        }
        .feature-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--glass-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent-blue);
        }
        .feature-text h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }
        .feature-text p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .section-reasons {
            padding: var(--section-padding);
            background: var(--bg-tertiary);
            text-align: center;
        }
        .section-reasons .section-title {
            color: var(--text-dark);
        }
        .section-reasons .section-subtitle {
            color: #6e6e73;
            margin-left: auto;
            margin-right: auto;
        }
        .reasons-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            text-align: left;
        }
        .reason-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0, 0, 0, 0.06);
            transition: all var(--transition-smooth);
            text-align: center;
        }
        .reason-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
        }
        .reason-card .card-icon {
            background: rgba(0, 113, 227, 0.08);
            color: var(--accent-blue);
            border: none;
            margin: 0 auto 16px;
        }
        .reason-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .reason-card p {
            font-size: 0.9rem;
            color: #6e6e73;
            line-height: 1.6;
        }

        .section-pricing {
            padding: var(--section-padding);
            background: var(--bg-primary);
            text-align: center;
        }
        .section-pricing .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        .pricing-card.featured {
            background: linear-gradient(135deg, rgba(0, 113, 227, 0.2) 0%, rgba(90, 200, 250, 0.1) 100%);
            border-color: rgba(0, 113, 227, 0.4);
            transform: scale(1.03);
        }
        .pricing-card.featured:hover {
            transform: scale(1.03) translateY(-6px);
        }
        .pricing-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent-blue);
            color: #fff;
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .pricing-name {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .pricing-price {
            font-size: 3rem;
            font-weight: 700;
            letter-spacing: -0.03em;
            margin-bottom: 4px;
        }
        .pricing-price span {
            font-size: 1rem;
            font-weight: 400;
            color: var(--text-secondary);
        }
        .pricing-period {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .pricing-features {
            list-style: none;
            text-align: left;
            margin-bottom: 28px;
            flex-grow: 1;
        }
        .pricing-features li {
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .pricing-features li i {
            color: #30d158;
            font-size: 0.85rem;
        }
        .pricing-card .btn {
            width: 100%;
            justify-content: center;
        }

        .section-contact {
            padding: var(--section-padding);
            background: var(--bg-tertiary);
            text-align: center;
        }
        .section-contact .section-title {
            color: var(--text-dark);
        }
        .section-contact .section-subtitle {
            color: #6e6e73;
            margin-left: auto;
            margin-right: auto;
        }
        .contact-card {
            max-width: 500px;
            margin: 0 auto;
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0, 0, 0, 0.06);
        }
        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 28px;
        }
        .contact-item {
            display: flex;
            align-items: center;
            gap: 16px;
            color: var(--text-dark);
            font-size: 1rem;
        }
        .contact-item i {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(0, 113, 227, 0.08);
            color: var(--accent-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .qr-code {
            width: 140px;
            height: 140px;
            background: #e0e0e0;
            border-radius: var(--radius-md);
            margin: 0 auto 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 4rem;
            color: #1d1d1f;
        }
        .qr-label {
            font-size: 0.85rem;
            color: #6e6e73;
        }

        .footer {
            background: var(--bg-secondary);
            padding: 48px 20px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 1.1rem;
        }
        .footer-logo i {
            color: var(--accent-blue);
        }
        .footer-links {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--text-primary);
        }
        .footer-bottom {
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.8rem;
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width:1024px) { .pricing-grid { grid-template-columns:repeat(2,1fr); } }
        @media (max-width:768px) {
            .nav-links { position:fixed; top:0; right:-100%; width:75%; max-width:320px; height:100vh; background:rgba(0,0,0,0.95); flex-direction:column; padding:80px 32px 32px; gap:24px; transition:right 0.4s; }
            .nav-links.active { right:0; }
            .hamburger { display:block; }
            .pricing-grid { grid-template-columns:1fr; }
            .difficulty-grid { grid-template-columns:1fr; }
        }
        .reveal { opacity:0; transform:translateY(40px); transition:opacity 0.8s ease-out, transform 0.8s ease-out; }
        .reveal.visible { opacity:1; transform:translateY(0); }
        
        
        /* ========== 行业案例 ========== */
.section-cases {
    padding: var(--section-padding);
    background: var(--bg-primary);
    text-align: center;
}
.section-cases .section-subtitle {
    margin-left: auto;
    margin-right: auto;
}
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}
.case-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all var(--transition-smooth);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.case-card:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow: var(--shadow-md);
}
.case-card .case-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--glass-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--accent-blue);
    margin-bottom: 16px;
    border: 1px solid var(--glass-border);
}
.case-card h4 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.case-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    flex-grow: 1;
}
.case-card .case-tag {
    display: inline-block;
    margin-top: 12px;
    background: rgba(0,113,227,0.15);
    color: var(--accent-blue);
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
}

/* 案例详情模态框（沿用现有模态框基础样式，使用独立 overlay 避免冲突） */
.case-modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: 0.35s;
}
.case-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}
.case-modal-dialog {
    background: #1c1c1e;
    border-radius: 20px;
    width: 92%;
    max-width: 720px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255,255,255,0.12);
    padding: 30px;
    position: relative;

    /* 隐藏滚动条 - WebKit 内核（Chrome/Safari/Edge） */
    scrollbar-width: none;          /* Firefox */
    -ms-overflow-style: none;       /* IE/Edge 旧版 */
}
.case-modal-dialog::-webkit-scrollbar {
    display: none;                  /* Chrome/Safari/Edge */
}

.case-images-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 两列，等宽 */
    gap: 12px;
    margin-top: 12px;
}
.case-images-grid img {
    width: 100%;
    height: 180px; /* 固定高度 */
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.15);
}
@media (max-width: 480px) {
    .case-images-grid {
        grid-template-columns: 1fr; /* 手机端单列 */
    }
    .case-images-grid img {
        height: 200px; /* 手机端稍高一些 */
    }
}

.case-modal-overlay.active .case-modal-dialog {
    transform: translateY(0) scale(1);
}
.case-modal-dialog h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
}
.case-modal-dialog .case-meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.case-modal-dialog .case-body {
    color: var(--text-secondary);
    line-height: 1.7;
}
.case-modal-dialog .case-body p {
    margin-bottom: 12px;
}
.case-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px; height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.1);
    color: var(--text-primary);
    cursor: pointer;
}
.nav-links button {
    outline: none;
}
/* 案例详情截图样式 */
.case-images {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 20px 0;
    justify-content: center;
}
.case-images img {
    max-width: 100%;
    width: calc(50% - 6px);        /* 两列自适应 */
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255,255,255,0.1);
    object-fit: cover;
}
@media (max-width: 500px) {
    .case-images img {
        width: 100%;                /* 移动端单列 */
    }
}

/* 落地效果高亮卡片 */
.highlight-section {
    background: linear-gradient(135deg, rgba(0,113,227,0.08) 0%, rgba(90,200,250,0.04) 100%);
    border-left: 3px solid var(--accent-blue) !important;
    border-color: rgba(0,113,227,0.4) !important;
}
.effect-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.effect-list li {
    position: relative;
    padding: 8px 0 8px 28px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.effect-list li:last-child {
    border-bottom: none;
}
.effect-list li::before {
    content: "✅";
    position: absolute;
    left: 0;
    top: 8px;
    font-size: 0.85rem;
}

/* 弹窗内文字通用优化 */
.case-info-section .section-content {
    font-size: 0.92rem;
    color: #c5c5c7;                /* 稍微提亮一点更易读 */
    line-height: 1.75;             /* 增加行间距 */
    white-space: pre-wrap;
    word-break: break-word;
}
.case-info-section {
    margin-bottom: 20px;           /* 块与块之间间隔更明显 */
}
.case-detail-header {
    margin-bottom: 28px;
    padding-bottom: 18px;
}
.case-detail-header h3 {
    color: #f5f5f7;
    margin-bottom: 12px;
}
.case-meta span {
    background: rgba(255,255,255,0.08);  /* 标签底色微调 */
    color: #a1a1a6;
}

/* 落地效果列表优化 */
.effect-list li {
    padding: 10px 0 10px 30px;     /* 稍大的间距 */
    font-size: 0.92rem;
    color: #c5c5c7;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.effect-list li::before {
    content: "✅";
    position: absolute;
    left: 0;
    top: 10px;
    font-size: 0.85rem;
}