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

        body {
            background: linear-gradient(145deg, #0b0c0e 0%, #1a1e25 100%);
            color: #eef2f6;
            line-height: 1.6;
            scroll-behavior: smooth;
        }

        /* 主色调渐变：熔岩橙 -> 炽热红 -> 暗夜灰，体现FurMark的GPU烤机特性 */
        .gradient-bg {
            background: linear-gradient(135deg, #f95738, #ee6f4b, #d93b1f, #3a2c29);
            background-size: 300% 300%;
            animation: gradientShift 16s ease infinite;
        }

        @keyframes gradientShift {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        .glass-card {
            background: rgba(20, 25, 32, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 140, 100, 0.25);
            border-radius: 32px;
            box-shadow: 0 25px 40px -12px rgba(0,0,0,0.7), 0 0 0 1px rgba(249, 87, 56, 0.2) inset;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏 */
        nav {
            padding: 24px 0 16px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(249, 87, 56, 0.3);
        }

        .logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(to right, #fcd34d, #f95738, #ff8c5a);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 0 8px rgba(249,87,56,0.5);
        }
        .logo span {
            font-size: 1rem;
            background: #3a302e;
            color: #ffbb9a;
            padding: 4px 10px;
            border-radius: 40px;
            margin-left: 12px;
            font-weight: 400;
        }

        .nav-links {
            display: flex;
            gap: 28px;
            font-weight: 500;
        }
        .nav-links a {
            color: #f0e3db;
            text-decoration: none;
            transition: 0.2s;
            font-size: 1.1rem;
            border-bottom: 2px solid transparent;
            padding-bottom: 6px;
        }
        .nav-links a:hover {
            border-bottom-color: #f95738;
            color: #ffb28b;
        }

        /* 通用按钮 */
        .btn-primary {
            background: linear-gradient(145deg, #f95738, #d94323);
            border: none;
            color: white;
            font-weight: 700;
            padding: 16px 40px;
            border-radius: 60px;
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 10px 20px -5px #d93b1f80, 0 0 0 1px #ffa06b inset;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            border: 1px solid rgba(255,255,240,0.2);
        }
        .btn-primary i {
            font-size: 1.4rem;
        }
        .btn-primary:hover {
            transform: scale(1.03);
            background: linear-gradient(145deg, #ff6848, #e64e2e);
            box-shadow: 0 18px 28px -6px #f95738;
        }

        .btn-outline {
            background: transparent;
            border: 2px solid #f97c58;
            color: #ffe3d6;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            backdrop-filter: blur(4px);
        }
        .btn-outline:hover {
            background: #f95738;
            color: #0b0c0e;
            border-color: #f95738;
        }

        /* 英雄区 */
        .hero {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            padding: 60px 0 60px;
        }
        .hero-left {
            flex: 1 1 380px;
        }
        .hero-left h1 {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(to bottom, #fff4ea, #fcbb9f);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 24px;
            text-shadow: 0 0 15px #f9845b;
        }
        .hero-left p {
            font-size: 1.25rem;
            margin: 24px 0 32px;
            color: #cfcfcf;
            max-width: 550px;
        }
        .hero-right {
            flex: 1 1 380px;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-right img {
            max-width: 100%;
            width: 450px;
            filter: drop-shadow(0 20px 25px #f9573840) drop-shadow(0 0 15px #fc7b55);
            border-radius: 40px;
            transform: perspective(800px) rotateY(-8deg) rotateX(4deg);
            transition: 0.3s;
            border: 2px solid rgba(255,160,120,0.5);
        }
        .hero-right img:hover {
            transform: perspective(800px) rotateY(-4deg) rotateX(2deg) scale(1.02);
        }

        /* 功能介绍卡片区域 (FurMark是什么) */
        .feature-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
            margin: 40px 0 20px;
        }
        .feature-item {
            background: rgba(10, 14, 20, 0.6);
            backdrop-filter: blur(8px);
            border-radius: 36px;
            padding: 32px 24px;
            border: 1px solid rgba(249, 87, 56, 0.25);
            box-shadow: 0 20px 30px -15px black;
            transition: 0.2s;
        }
        .feature-item:hover {
            border-color: #f9845b;
            transform: translateY(-6px);
            background: rgba(30, 25, 25, 0.7);
        }
        .feature-item i {
            font-size: 2.6rem;
            background: linear-gradient(45deg, #f95738, #ffb347);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 20px;
        }
        .feature-item h3 {
            font-size: 1.8rem;
            margin-bottom: 16px;
            color: #fcd0b5;
        }
        .feature-item p {
            color: #b9c2cc;
        }

        /* 下载区域 (夸克网盘) */
        .download-area {
            margin: 80px 0;
            border-radius: 48px;
            padding: 48px 40px;
            background: rgba(0,0,0,0.35);
            backdrop-filter: blur(16px);
            border: 1px solid #f9573866;
            box-shadow: 0 30px 40px -20px #f95738;
        }
        .section-title {
            font-size: 2.8rem;
            font-weight: 700;
            margin-bottom: 40px;
            background: linear-gradient(to right, #ffdab9, #ffa07a);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: inline-block;
            border-left: 8px solid #f95738;
            padding-left: 30px;
        }

        .download-flex {
            display: flex;
            flex-wrap: wrap;
            gap: 50px;
            align-items: center;
            justify-content: center;
        }
        .qr-box {
            text-align: center;
            background: rgba(0,0,0,0.5);
            padding: 20px 20px 16px;
            border-radius: 40px;
            border: 1px solid #ffa978;
        }
        .qr-box img {
            width: 180px;
            height: 180px;
            border-radius: 24px;
            background: white;
            padding: 8px;
            box-shadow: 0 0 30px #f9845b;
        }
        .qr-box p {
            margin-top: 12px;
            color: #ffc7a7;
            font-weight: 500;
        }
        .download-actions {
            display: flex;
            flex-direction: column;
            gap: 28px;
            min-width: 260px;
        }
        .btn-download-pc {
            font-size: 1.8rem;
            padding: 22px 40px;
            border-radius: 80px;
            background: linear-gradient(145deg, #f95738, #bf3b1f);
            border: 2px solid #ffbb8a;
            color: white;
            font-weight: 800;
            box-shadow: 0 15px 25px #f95738;
            cursor: pointer;
            transition: 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
        }
        .btn-download-pc i {
            font-size: 2.2rem;
        }
        .btn-download-pc:hover {
            background: #f95738;
            box-shadow: 0 20px 30px #f98f4b;
            transform: scale(1.02);
        }
        .link-wrapper {
            text-align: center;
        }
        .quark-link {
            color: #ffc7a7;
            font-size: 1.2rem;
            word-break: break-all;
            background: rgba(249,87,56,0.2);
            padding: 14px 20px;
            border-radius: 60px;
            border: 1px dashed #f9845b;
            display: inline-flex;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            transition: 0.1s;
        }
        .quark-link i {
            font-size: 1.5rem;
            color: #f98f4b;
        }
        .quark-link:hover {
            background: rgba(249,87,56,0.4);
            border: 1px solid #f9845b;
        }

        /* 二维码弹窗 (modal) 简单覆盖 */
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0; left: 0; width: 100%; height: 100%;
            background: rgba(0,0,0,0.7);
            backdrop-filter: blur(5px);
            align-items: center;
            justify-content: center;
            z-index: 999;
        }
        .modal-card {
            background: #1f262e;
            padding: 30px 40px 35px;
            border-radius: 64px;
            border: 3px solid #f9845b;
            text-align: center;
            max-width: 400px;
            box-shadow: 0 30px 50px #f95738;
        }
        .modal-card img {
            width: 240px;
            height: 240px;
            background: white;
            padding: 10px;
            border-radius: 40px;
            margin: 15px 0;
        }
        .modal-card h3 {
            font-size: 2rem;
            color: #ffd8c1;
        }
        .close-modal {
            margin-top: 20px;
            background: #3a302e;
            border: none;
            color: white;
            padding: 12px 30px;
            border-radius: 40px;
            font-weight: bold;
            cursor: pointer;
            border: 1px solid #f95738;
        }

        /* 教程和常见问题网格 */
        .grid-2col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            margin: 50px 0;
        }
        .tutorial-card, .faq-card {
            background: rgba(15, 20, 26, 0.7);
            backdrop-filter: blur(6px);
            border-radius: 40px;
            padding: 32px;
            border: 1px solid #f9573840;
            transition: 0.2s;
        }
        .tutorial-card:hover, .faq-card:hover {
            border-color: #f97c58;
        }
        .tutorial-card h2, .faq-card h2 {
            font-size: 2.2rem;
            margin-bottom: 24px;
            border-left: 5px solid #f95738;
            padding-left: 20px;
        }
        .tutorial-list, .faq-list {
            list-style: none;
        }
        .tutorial-list li, .faq-list li {
            margin-bottom: 28px;
            font-size: 1.15rem;
            border-bottom: 1px solid rgba(249,135,95,0.2);
            padding-bottom: 12px;
        }
        .tutorial-list i, .faq-list i {
            color: #f9845b;
            width: 28px;
            font-size: 1.4rem;
            margin-right: 12px;
        }
        .faq-question {
            font-weight: 700;
            color: #ffbe95;
            display: block;
            font-size: 1.25rem;
            margin-bottom: 6px;
        }
        .faq-answer {
            color: #b0b9c5;
            padding-left: 40px;
        }

        footer {
            text-align: center;
            padding: 40px 0 20px;
            border-top: 1px solid #f9573830;
            color: #7a7f89;
        }

        @media (max-width: 720px) {
            .hero-left h1 { font-size: 2.8rem; }
            .section-title { font-size: 2rem; }
            .grid-2col { grid-template-columns: 1fr; }
            .nav-links { gap: 16px; }
            .btn-download-pc { font-size: 1.5rem; padding: 16px 28px;}
        }
        @media (max-width: 480px) {
            .hero-left h1 { font-size: 2.2rem; }
            .btn-primary { padding: 12px 30px; }
        }

        /* 锚点偏移补偿 */
        section::before {
            content: '';
            display: block;
            height: 70px;
            margin-top: -70px;
            visibility: hidden;
        }