* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #fffaf7;
            color: #2c2826;
            line-height: 1.5;
            scroll-behavior: smooth;
        }

        /* 主色调 #ff552e (活力橙红) + 辅助深色 */
        :root {
            --primary: #ff552e;
            --primary-dark: #dc3c1a;
            --primary-light: #ff8a6b;
            --secondary: #2b2b2b;
            --gray-bg: #fff3ef;
            --text-dark: #2c2826;
            --text-light: #5e5a58;
            --border-light: #ffe2d8;
            --accent-gold: #ffb347;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 28px;
        }

        /* 头部导航 */
        .header {
            background: white;
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.03);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 3px solid var(--primary);
        }

        .nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 0;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .logo span {
            color: var(--primary-dark);
            background: #fff0e8;
            padding: 0 6px;
            border-radius: 12px;
        }

        .nav-links {
            display: flex;
            gap: 36px;
            list-style: none;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            transition: color 0.2s;
            font-size: 1rem;
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        /* 锚点偏移修正 */
        .anchor-offset {
            scroll-margin-top: 95px;
        }

        /* 按钮 */
        .btn {
            display: inline-block;
            background-color: var(--primary);
            color: white;
            padding: 12px 32px;
            border-radius: 60px;
            text-decoration: none;
            font-weight: 700;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(255,85,46,0.2);
        }
        .btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 22px rgba(255,85,46,0.3);
        }

        /* Hero 区域 */
        .hero {
            background: linear-gradient(125deg, #fff2ec 0%, #ffffff 100%);
            padding: 80px 0 70px;
            border-bottom: 1px solid var(--border-light);
        }
        .hero-grid {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .hero-text {
            flex: 1;
        }
        .hero-text h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero-text p {
            font-size: 1.2rem;
            color: var(--text-light);
            margin-bottom: 28px;
        }
        .hero-image {
            flex: 1;
            background: #ffede5;
            border-radius: 56px;
            height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 5rem;
            background-image: radial-gradient(circle at 30% 40%, rgba(255,85,46,0.08) 2.5%, transparent 2.5%);
            background-size: 28px 28px;
            box-shadow: 0 15px 30px rgba(0,0,0,0.02);
        }

        /* 章节通用样式 */
        .section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .section:last-of-type {
            border-bottom: none;
        }
        .section-title {
            font-size: 2.3rem;
            color: var(--primary-dark);
            margin-bottom: 18px;
            position: relative;
            display: inline-block;
            font-weight: 700;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -12px;
            left: 0;
            width: 70px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
        }
        .title-center {
            text-align: center;
            display: block;
        }
        .title-center::after {
            left: 50%;
            transform: translateX(-50%);
            width: 90px;
        }

        .cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 36px;
            margin-top: 52px;
        }
        .card {
            background: white;
            border-radius: 32px;
            padding: 32px 28px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.02);
            transition: all 0.3s ease;
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: 0 25px 40px rgba(255,85,46,0.08);
            border-color: var(--primary-light);
        }
        .card-icon {
            font-size: 2.8rem;
            margin-bottom: 20px;
        }
        .card h3 {
            font-size: 1.6rem;
            margin-bottom: 14px;
            color: var(--primary);
        }
        .quote-block {
            background: var(--gray-bg);
            border-left: 5px solid var(--primary);
            padding: 28px 32px;
            border-radius: 28px;
            margin: 44px 0 20px;
            font-weight: 500;
        }
        .method-list {
            list-style: none;
            padding-left: 0;
        }
        .method-list li {
            margin-bottom: 16px;
            padding-left: 28px;
            position: relative;
        }
        .method-list li::before {
            content: "🎤";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--primary);
        }

        /* 友情链接区域 */
        .friends-section {
            background: #fff5f0;
            margin-top: 20px;
            padding: 48px 0;
            border-top: 1px solid var(--border-light);
        }
        .friends-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 28px;
            margin-top: 32px;
        }
        .friend-link {
            background: white;
            padding: 10px 26px;
            border-radius: 60px;
            text-decoration: none;
            color: var(--primary-dark);
            font-weight: 600;
            transition: all 0.2s;
            box-shadow: 0 2px 8px rgba(0,0,0,0.03);
            border: 1px solid #ffe0d4;
            display: inline-block;
        }
        .friend-link:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .footer {
            background: #1e1b1a;
            color: #ddcdc5;
            padding: 48px 0 28px;
            text-align: center;
        }
        .footer a {
            color: #ffb7a3;
            text-decoration: none;
        }

        @media (max-width: 768px) {
            .hero-text h1 { font-size: 2.2rem; }
            .section-title { font-size: 1.8rem; }
            .nav {
                flex-direction: column;
                gap: 14px;
            }
            .nav-links {
                gap: 22px;
                flex-wrap: wrap;
                justify-content: center;
            }
            .container {
                padding: 0 20px;
            }
        }