:root {
            --blue-deep: #174583;
            --blue: #2860b2;
            --theme: #2860b2;
            --theme-light: #4e86d6;
            --theme-soft: rgba(40, 96, 178, 0.12);
            --theme-shadow: rgba(40, 96, 178, 0.28);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }

        body {
            background-color: #f5f9ff;
            color: #333;
            line-height: 1.6;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        header {
            padding: 20px 0;
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 100;
        }

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

        .logo {
            display: flex;
            align-items: center;
        }

        .logo-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--theme-light) 0%, var(--theme) 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            box-shadow: 0 4px 12px var(--theme-shadow);
        }

        .logo-icon::before {
            content: "ie";
            color: white;
            font-weight: bold;
            font-size: 20px;
            font-family: "Segoe UI", sans-serif;
        }

        .logo-text h1 {
            font-size: 28px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--theme-light) 0%, var(--theme) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 0.5px;
        }

        .logo-text p {
            font-size: 14px;
            color: #666;
        }

        nav ul {
            display: flex;
            list-style: none;
        }

        nav li {
            margin-left: 30px;
        }

        nav a {
            color: #444;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 0;
            position: relative;
            font-size: 16px;
        }

        nav a:hover {
            color: var(--theme);
        }

        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--theme);
            transition: width 0.3s ease;
            border-radius: 3px;
        }

        nav a:hover::after {
            width: 100%;
        }

        .ie-hero {
            padding: 100px 0 80px;
            text-align: center;
            position: relative;
            background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue) 57%, #2860b2 100%);
            color: white;
            margin-bottom: 60px;
            border-radius: 0 0 30px 30px;
            box-shadow: 0 15px 40px var(--theme-shadow);
            overflow: hidden;
        }

        .ie-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" width="100" height="100" opacity="0.05"><circle cx="50" cy="50" r="2" fill="white"/></svg>');
            z-index: 1;
        }

        .ie-hero-content {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .ie-hero h2 {
            font-size: 52px;
            margin-bottom: 20px;
            font-weight: 700;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
        }

        .ie-hero p {
            font-size: 22px;
            margin-bottom: 40px;
            opacity: 0.95;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        .ie-download-btn {
            display: inline-block;
            background: white;
            color: var(--theme);
            padding: 18px 45px;
            font-size: 20px;
            font-weight: 700;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            text-decoration: none;
            position: relative;
            overflow: hidden;
            margin: 15px;
        }

        .ie-download-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
            text-decoration: none;
            color: var(--theme);
        }

        .ie-download-btn:active {
            transform: translateY(1px);
        }

        .ie-download-btn::after {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, var(--theme-soft), transparent);
            transition: left 0.7s;
        }

        .ie-download-btn:hover::after {
            left: 100%;
        }

        .ie-version-info {
            margin-top: 25px;
            font-size: 16px;
            opacity: 0.9;
        }

        .ie-features {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-top: 60px;
            flex-wrap: wrap;
        }

        .ie-feature {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 15px;
            padding: 25px;
            width: 220px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all 0.3s ease;
        }

        .ie-feature:hover {
            transform: translateY(-8px);
            background: rgba(255, 255, 255, 0.25);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
        }

        .ie-feature-icon {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 30px;
            color: white;
        }

        .ie-feature h3 {
            font-size: 20px;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .ie-feature p {
            font-size: 15px;
            opacity: 0.9;
        }

        .edge-section {
            padding: 80px 0;
            background: white;
            border-radius: 30px;
            margin-bottom: 60px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }

        .section-title {
            text-align: center;
            margin-bottom: 60px;
            font-size: 42px;
            font-weight: 700;
            color: var(--theme);
            position: relative;
            display: inline-block;
            left: 50%;
            transform: translateX(-50%);
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--theme), var(--theme-light));
            border-radius: 2px;
        }

        .edge-hero {
            display: flex;
            align-items: center;
            gap: 50px;
            margin-bottom: 70px;
        }

        .edge-hero-content {
            flex: 1;
        }

        .edge-hero-image {
            flex: 1;
            text-align: center;
        }

        .edge-logo {
            width: 120px;
            height: 120px;
            background: linear-gradient(135deg, var(--theme) 0%, var(--theme-light) 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 30px;
            font-size: 50px;
            font-weight: bold;
            color: white;
            box-shadow: 0 10px 30px var(--theme-shadow);
        }

        .edge-hero h3 {
            font-size: 36px;
            margin-bottom: 20px;
            color: var(--theme);
            font-weight: 700;
        }

        .edge-hero p {
            font-size: 18px;
            margin-bottom: 30px;
            color: #555;
            line-height: 1.7;
        }

        .edge-download-btn {
            display: inline-block;
            background: linear-gradient(135deg, var(--theme) 0%, var(--theme-light) 100%);
            color: white;
            padding: 16px 40px;
            font-size: 18px;
            font-weight: 600;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 8px 25px var(--theme-shadow);
            text-decoration: none;
            position: relative;
            overflow: hidden;
        }

        .edge-download-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(40, 96, 178, 0.4);
            text-decoration: none;
            color: white;
        }

        .edge-download-btn:active {
            transform: translateY(1px);
        }

        .edge-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 70px;
        }

        .edge-feature-card {
            background: #f8fbff;
            border-radius: 15px;
            padding: 30px;
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid rgba(40, 96, 178, 0.1);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
            position: relative;
            overflow: hidden;
        }

        .edge-feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--theme), var(--theme-light));
        }

        .edge-feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(40, 96, 178, 0.15);
        }

        .edge-feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--theme) 0%, var(--theme-light) 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 30px;
            color: white;
            box-shadow: 0 6px 15px var(--theme-shadow);
        }

        .edge-feature-card h3 {
            font-size: 22px;
            margin-bottom: 15px;
            font-weight: 600;
            color: var(--theme);
        }

        .edge-feature-card p {
            opacity: 0.8;
            font-size: 16px;
            line-height: 1.6;
        }

        .edge-comparison {
            background: #f0f7ff;
            border-radius: 20px;
            padding: 50px;
            margin-top: 50px;
        }

        .comparison-title {
            text-align: center;
            margin-bottom: 40px;
            font-size: 32px;
            font-weight: 600;
            color: var(--theme);
        }

        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .browser-compare {
            background: white;
            border-radius: 15px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }

        .browser-compare h4 {
            font-size: 24px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--theme);
        }

        .browser-compare.ie h4 {
            color: var(--theme);
        }

        .compare-feature {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
        }

        .compare-feature:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        .compare-feature strong {
            display: block;
            margin-bottom: 5px;
            color: #444;
        }

        footer {
            padding: 50px 0;
            background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
            color: #ccc;
            text-align: center;
            border-radius: 30px 30px 0 0;
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }

        .footer-logo {
            flex: 1;
            min-width: 250px;
            text-align: left;
            margin-bottom: 30px;
        }

        .footer-logo h3 {
            color: white;
            margin-bottom: 15px;
            font-size: 22px;
        }

        .footer-links {
            flex: 1;
            min-width: 200px;
            text-align: left;
            margin-bottom: 30px;
        }

        .footer-links h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 18px;
        }

        .footer-links ul {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #aaa;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .footer-links a:hover {
            color: var(--theme-light);
        }

        .copyright {
            font-size: 14px;
            opacity: 0.7;
            padding-top: 20px;
            border-top: 1px solid #444;
        }

        @media (max-width: 992px) {
            .edge-hero {
                flex-direction: column;
                text-align: center;
            }

            .comparison-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                text-align: center;
            }

            nav {
                margin-top: 20px;
            }

            nav ul {
                justify-content: center;
            }

            nav li {
                margin: 0 15px;
            }

            .ie-hero h2 {
                font-size: 40px;
            }

            .ie-hero p {
                font-size: 18px;
            }

            .ie-download-btn {
                padding: 15px 35px;
                font-size: 18px;
            }

            .section-title {
                font-size: 36px;
            }

            .edge-hero h3 {
                font-size: 30px;
            }
        }

        @media (max-width: 576px) {
            .ie-features {
                flex-direction: column;
                align-items: center;
            }

            .ie-feature {
                width: 100%;
                max-width: 300px;
            }

            .edge-features-grid {
                grid-template-columns: 1fr;
            }
        }