/* ==================== CSS变量定义 - 温暖可爱风格 ==================== */
:root {
    /* 背景色 - 蓝白色系 */
    --bg-warm-white: #F7FAFF;
    --bg-cream: #EDF3FC;
    --bg-light-cream: #F4F8FF;
    --bg-white: #FFFFFF;

    /* 深色区块 - 海军蓝 */
    --navy-blue: #163B6B;
    --navy-blue-light: #2C5B97;
    --navy-blue-dark: #102C50;

    /* 文字色 */
    --text-primary: #1B365D;
    --text-dark: #333333;
    --text-body: #344761;
    --text-secondary: #5A6D87;
    --text-light: #888888;
    --text-white: #FFFFFF;

    /* 金色点缀 */
    --gold: #CFA43A;
    --gold-light: #E0B74A;
    --gold-pale: #F8EFCF;

    /* 灰度色 */
    --gray-100: #DCE6F3;
    --gray-200: #C6D6EA;
    --gray-300: #AFC4DE;

    /* 阴影与圆角 */
    --shadow-sm: 0 2px 8px rgba(27, 54, 93, 0.06);
    --shadow-md: 0 4px 16px rgba(27, 54, 93, 0.1);
    --shadow-lg: 0 8px 32px rgba(27, 54, 93, 0.12);
    --shadow-card: 0 4px 20px rgba(27, 54, 93, 0.08);

    /* 圆角 - 更大更可爱 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 50%;

    /* 过渡 */
    --transition: all 0.3s ease;

    /* 字体 */
    --font-light: 300;
    --font-regular: 400;
    --font-medium: 500;
    --font-bold: 700;
}

/* ==================== SVG图标样式 ==================== */
        .about-tag-icon {
            margin-right: 8px;
            flex-shrink: 0;
        }
        
        .section-tag-icon {
            margin-right: 8px;
            flex-shrink: 0;
        }

        /* ==================== 基础样式重置 ==================== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-warm-white);
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        ul {
            list-style: none;
        }

        img {
            max-width: 100%;
            height: auto;
        }

        /* ==================== 通用容器 ==================== */
        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 100px 0;
        }

        /* ==================== 导航栏 - 温暖米色背景 ==================== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(244, 248, 255, 0.96);
            border-bottom: 1px solid var(--gray-100);
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }

        .navbar.scrolled {
            background: rgba(236, 244, 255, 0.94);
            box-shadow: var(--shadow-sm);
        }

        .navbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 64px;
        }

        .nav-links {
            display: flex;
            gap: 36px;
            align-items: center;
        }

        .nav-links a {
            font-size: 0.95rem;
            color: var(--text-body);
            font-weight: var(--font-regular);
            padding: 6px 0;
            position: relative;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--gold);
            border-radius: 1px;
            transition: var(--transition);
            transform: translateX(-50%);
        }

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

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-cta {
            background: var(--navy-blue) !important;
            color: white !important;
            padding: 10px 22px !important;
            border-radius: var(--radius-lg);
            font-weight: var(--font-medium) !important;
            box-shadow: var(--shadow-sm);
        }

        .nav-cta::after {
            display: none !important;
        }

        .nav-cta:hover {
            background: var(--navy-blue-light) !important;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 5px;
        }

        .mobile-menu-btn span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--navy-blue);
            border-radius: 1px;
            transition: var(--transition);
        }

        /* ==================== 移动端导航 ==================== */
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-warm-white);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--gray-100);
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
            }

            .nav-links.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .mobile-menu-btn.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }

            .mobile-menu-btn.active span:nth-child(2) {
                opacity: 0;
            }

            .mobile-menu-btn.active span:nth-child(3) {
                transform: rotate(-45deg) translate(5px, -5px);
            }
        }

        /* ==================== Hero 区域 - 温暖渐变背景 ==================== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            background:
                radial-gradient(circle at 18% 24%, rgba(224, 183, 74, 0.24) 0%, transparent 36%),
                radial-gradient(circle at 82% 76%, rgba(44, 91, 151, 0.24) 0%, transparent 34%),
                linear-gradient(120deg, #dfeafb 0%, #f6f9ff 45%, #e8f1ff 100%);
            background-size: 140% 140%, 140% 140%, 240% 240%;
            animation: heroGradientShift 10s ease-in-out infinite;
            padding-top: 64px;
            position: relative;
            overflow: hidden;
        }

        /* 装饰性圆形背景 */
        .hero::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: linear-gradient(135deg, rgba(224, 183, 74, 0.38) 0%, transparent 72%);
            border-radius: 50%;
            opacity: 0.72;
            animation: heroFloatA 7.5s ease-in-out infinite;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: -100px;
            width: 300px;
            height: 300px;
            background: linear-gradient(135deg, rgba(44, 91, 151, 0.32) 0%, transparent 72%);
            border-radius: 50%;
            opacity: 0.76;
            animation: heroFloatB 8.2s ease-in-out infinite;
        }

        @keyframes heroGradientShift {
            0% {
                background-position: 6% 10%, 94% 88%, 0% 50%;
            }
            50% {
                background-position: 24% 26%, 76% 72%, 100% 50%;
            }
            100% {
                background-position: 6% 10%, 94% 88%, 0% 50%;
            }
        }

        @keyframes heroFloatA {
            0%, 100% {
                transform: translate(0, 0) scale(1);
            }
            50% {
                transform: translate(-42px, 36px) scale(1.08);
            }
        }

        @keyframes heroFloatB {
            0%, 100% {
                transform: translate(0, 0) scale(1);
            }
            50% {
                transform: translate(48px, -34px) scale(1.1);
            }
        }

        .hero-content {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .hero-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 60px 48px;
            box-shadow: 0 18px 42px rgba(15, 42, 76, 0.12);
            border: 1px solid rgba(178, 198, 225, 0.62);
            position: relative;
            overflow: hidden;
        }

        .hero-card::before {
            /* 改成极简商务风：顶部细金线 */
            content: '';
            position: absolute;
            top: 0;
            left: 24px;
            right: 24px;
            height: 3px;
            background: linear-gradient(90deg, transparent 0%, rgba(224, 183, 74, 0.95) 50%, transparent 100%);
            border-radius: 3px;
        }

        .hero-card::after {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle at top right, rgba(44, 91, 151, 0.11) 0%, rgba(44, 91, 151, 0.02) 48%, transparent 72%);
            pointer-events: none;
        }

        .hero-text h1 {
            font-size: 3.2rem;
            font-weight: var(--font-bold);
            color: var(--navy-blue);
            margin-bottom: 24px;
            line-height: 1.2;
            letter-spacing: -0.015em;
            text-shadow: none;
        }

        .hero-text h1 span {
            color: var(--gold);
            position: relative;
        }

        .hero-text p {
            font-size: 1.15rem;
            color: var(--text-body);
            margin-bottom: 40px;
            line-height: 1.8;
            max-width: 580px;
            margin-left: auto;
            margin-right: auto;
            font-weight: 400;
            color: #3f5471;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-lg);
            font-weight: var(--font-medium);
            font-size: 1rem;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--navy-blue) 0%, var(--navy-blue-light) 100%);
            color: white;
            box-shadow: var(--shadow-md);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--navy-blue-light) 0%, var(--navy-blue) 100%);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .btn-secondary {
            background: var(--bg-white);
            color: var(--navy-blue);
            border: 2px solid var(--gray-200);
        }

        .btn-secondary:hover {
            border-color: rgba(44, 91, 151, 0.45);
            background: #eff5ff;
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 60px;
            padding-top: 28px;
            border-top: 1px solid rgba(176, 196, 222, 0.45);
            border-radius: 0;
        }

        .stat-item {
            text-align: center;
            min-width: 92px;
            position: relative;
            padding: 4px 6px;
        }

        .stat-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: -24px;
            top: 8px;
            width: 1px;
            height: 44px;
            background: linear-gradient(180deg, rgba(173, 196, 226, 0.08) 0%, rgba(173, 196, 226, 0.55) 50%, rgba(173, 196, 226, 0.08) 100%);
        }

        .stat-value {
            font-size: 2.2rem;
            font-weight: var(--font-bold);
            color: var(--navy-blue);
            line-height: 1;
        }

        .stat-value span {
            color: var(--gold);
        }

        .stat-label {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-top: 8px;
            letter-spacing: 0.02em;
        }

        @media (max-width: 992px) {
            .hero-text h1 {
                font-size: 2.5rem;
            }

            .hero-card {
                padding: 40px 32px;
            }

            .hero-stats {
                gap: 32px;
            }

            .stat-item:not(:last-child)::after {
                right: -16px;
            }
        }

        @media (max-width: 576px) {
            .hero {
                padding-top: 80px;
            }

            .hero-text h1 {
                font-size: 1.9rem;
            }

            .hero-text p {
                font-size: 1rem;
            }

            .hero-card {
                padding: 32px 24px;
                border-radius: var(--radius-lg);
            }

            .btn {
                padding: 12px 20px;
                font-size: 0.95rem;
            }

            .hero-stats {
                flex-direction: column;
                gap: 24px;
                align-items: center;
                border-radius: 10px;
            }

            .stat-value {
                font-size: 1.8rem;
            }

            .stat-item:not(:last-child)::after {
                display: none;
            }
        }

        /* ==================== 分隔区块 - 温暖线条 ==================== */
        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent 0%, var(--gray-200) 50%, transparent 100%);
            max-width: 1100px;
            margin: 0 auto;
        }

        /* ==================== 关于我们 - 温暖卡片风格 ==================== */
        .about {
            background: #f4f8ff;
        }

        .about-content {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 80px;
            align-items: center;
        }

        .about-visual {
            position: relative;
        }

        .about-card {
            background: linear-gradient(180deg, #ffffff 0%, #f7fbff 100%);
            border-radius: var(--radius-xl);
            padding: 48px;
            text-align: center;
            border: 1px solid rgba(173, 196, 226, 0.5);
            box-shadow: 0 8px 26px rgba(22, 59, 107, 0.1);
            position: relative;
        }

        .about-card .brand-name {
            font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
            font-size: 2.75rem;
            font-weight: 800;
            letter-spacing: 0.12em;
            color: var(--brand-logo-ink, #284678);
            margin-bottom: 12px;
        }

        .about-card .slogan {
            font-size: 0.98rem;
            font-weight: 500;
            letter-spacing: 0.08em;
            color: var(--brand-logo-mist, #9fb2cc);
        }

        /* 装饰性元素 */
        .about-card::before {
            content: '';
            position: absolute;
            top: -10px;
            left: 50%;
            transform: translateX(-50%);
            color: var(--gold);
            font-size: 1.2rem;
        }

        .about-badge {
            position: absolute;
            bottom: -16px;
            right: -16px;
            background: linear-gradient(135deg, #29548f 0%, #3d6fad 100%);
            color: white;
            padding: 16px 24px;
            border-radius: var(--radius-lg);
            box-shadow: 0 10px 22px rgba(16, 44, 80, 0.28);
            border: 1px solid rgba(224, 183, 74, 0.35);
        }

        .about-badge-value {
            font-size: 1.4rem;
            font-weight: var(--font-bold);
            color: white;
        }

        .about-badge-label {
            font-size: 0.75rem;
            color: white;
            opacity: 0.95;
        }

        .about-text h2 {
            font-size: 2.2rem;
            font-weight: var(--font-bold);
            color: var(--navy-blue);
            margin-bottom: 24px;
            line-height: 1.2;
        }

        .about-text p {
            color: var(--text-body);
            margin-bottom: 20px;
            line-height: 1.8;
            font-size: 1.05rem;
        }

        .about-text p:last-of-type {
            margin-bottom: 32px;
        }

        .about-text strong {
            color: var(--navy-blue);
            font-weight: var(--font-medium);
        }

        .about-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .about-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #f2f7ff;
            padding: 10px 18px;
            border-radius: var(--radius-xl);
            font-size: 0.9rem;
            color: var(--text-body);
            border: 1px solid #d4e1f3;
            transition: var(--transition);
        }

        .about-tag:hover {
            background: var(--bg-white);
            border-color: var(--gold);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        @media (max-width: 992px) {
            .about-content {
                grid-template-columns: 1fr;
                gap: 48px;
            }

            .about-badge {
                right: 20px;
            }

            .about-text h2 {
                font-size: 2rem;
            }
        }

        /* ==================== 产品展示 - 温暖卡片布局 ==================== */
        .products {
            background: #edf4ff;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: var(--font-bold);
            color: var(--navy-blue);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 1.1rem;
            color: var(--text-secondary);
        }

        .section-tag {
            display: inline-block;
            background: var(--gold-pale);
            color: var(--gold);
            padding: 6px 16px;
            border-radius: var(--radius-xl);
            font-size: 0.8rem;
            font-weight: var(--font-medium);
            margin-bottom: 16px;
        }

        .products-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .product-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid var(--gray-100);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .product-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--gold) 0%, var(--gold-light) 100%);
            transform: scaleX(0);
            transition: var(--transition);
        }

        .product-card:hover {
            border-color: var(--gold);
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .product-card:hover::before {
            transform: scaleX(1);
        }

        .product-banner {
            width: 100%;
            height: 120px;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 20px;
            position: relative;
            box-shadow: 0 8px 18px rgba(18, 47, 87, 0.16);
        }

        .product-banner-link {
            display: block;
            text-decoration: none;
            cursor: pointer;
            transform: perspective(900px) translateZ(0);
            transition: transform 0.35s ease, box-shadow 0.35s ease;
        }

        .product-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(130deg, rgba(255, 255, 255, 0.22) 0%, transparent 45%, rgba(18, 47, 87, 0.08) 100%);
            pointer-events: none;
        }
        
        .product-banner img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease, filter 0.35s ease;
        }

        .product-card:hover .product-banner-link,
        .product-banner-link:hover {
            transform: perspective(900px) translateY(-3px) scale(1.01);
            box-shadow: 0 12px 24px rgba(18, 47, 87, 0.2);
        }
        
        .product-card:hover .product-banner img,
        .product-banner-link:hover img {
            transform: scale(1.06);
            filter: saturate(1.08) contrast(1.04);
        }

        .product-tag {
            display: inline-block;
            background: var(--gold-pale);
            color: var(--gold);
            padding: 5px 12px;
            border-radius: var(--radius-xl);
            font-size: 0.75rem;
            font-weight: var(--font-medium);
            margin-bottom: 14px;
        }

        .product-card h3 {
            font-size: 1.2rem;
            color: var(--navy-blue);
            margin-bottom: 12px;
            font-weight: var(--font-medium);
        }

        .product-card p {
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .product-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--navy-blue);
            font-weight: var(--font-medium);
            font-size: 0.9rem;
            padding: 8px 16px;
            background: var(--bg-cream);
            border-radius: var(--radius-lg);
            transition: var(--transition);
        }

        .product-link:hover {
            background: var(--navy-blue);
            color: white;
            gap: 10px;
        }

        .product-link svg {
            width: 14px;
            height: 14px;
        }

        @media (max-width: 992px) {
            .products-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .products-grid {
                grid-template-columns: 1fr;
            }

            .section-header h2 {
                font-size: 1.8rem;
            }
        }

        /* ==================== 课程展示 - 温暖大卡片风格 ==================== */
        .courses {
            background: #f6faff;
        }

        .courses-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .course-card {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            border: 1px solid var(--gray-100);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .course-card:hover {
            border-color: var(--gold);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .course-header {
            padding: 0;
            border-bottom: 1px dashed var(--gray-200);
            position: relative;
            background: linear-gradient(180deg, #eef5ff 0%, #ffffff 100%);
            overflow: hidden;
        }
        
        .course-banner {
            width: 100%;
            height: 140px;
            overflow: hidden;
        }
        
        .course-banner img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .course-card:hover .course-banner img {
            transform: scale(1.03);
        }

        .course-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: linear-gradient(135deg, var(--navy-blue) 0%, var(--navy-blue-light) 100%);
            color: white;
            padding: 6px 14px;
            border-radius: var(--radius-lg);
            font-size: 0.75rem;
            font-weight: var(--font-medium);
        }

        .course-content {
            padding: 10px 16px 6px;
        }
        
        .course-title {
            color: var(--navy-blue);
            font-size: 1.28rem;
            font-weight: var(--font-bold);
            margin-bottom: 4px;
            line-height: 1.35;
        }

        .course-body {
            padding: 14px 18px 16px;
        }

        .course-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 14px;
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed var(--gray-200);
        }

        .course-meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--text-secondary);
            font-size: 0.86rem;
            font-weight: 500;
        }

        .course-description {
            color: var(--text-body);
            line-height: 1.72;
            margin-bottom: 10px;
            font-size: 0.95rem;
        }

        .course-features {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 8px;
            margin-bottom: 14px;
        }

        .course-features li {
            background: #eef5ff;
            padding: 7px 10px;
            border-radius: var(--radius-lg);
            font-size: 0.8rem;
            color: #39516f;
            border: 1px solid #d5e2f3;
            text-align: center;
            line-height: 1.3;
            white-space: nowrap;
        }

        /* QR Code Styles */
        .qr-code {
            width: 120px;
            height: 120px;
            background: linear-gradient(135deg, var(--bg-cream) 0%, var(--bg-light-cream) 100%);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 0.8rem;
            border: 2px dashed var(--gray-200);
            margin: 16px 0;
            text-align: center;
            line-height: 1.4;
        }

        .qr-large {
            width: 160px;
            height: 160px;
            font-size: 0.9rem;
        }

        .course-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--navy-blue) 0%, var(--navy-blue-light) 100%);
            color: white;
            padding: 10px 20px;
            border-radius: var(--radius-lg);
            font-weight: var(--font-medium);
            font-size: 0.92rem;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .course-cta:hover {
            background: linear-gradient(135deg, var(--navy-blue-light) 0%, var(--navy-blue) 100%);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .recorded-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--navy-blue) 0%, var(--navy-blue-light) 100%);
            color: white;
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-size: 0.85rem;
            font-weight: var(--font-medium);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            margin-top: 8px;
            text-decoration: none;
        }

        .recorded-cta:hover {
            background: linear-gradient(135deg, var(--navy-blue-light) 0%, var(--navy-blue) 100%);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* 录播课程 */
        .recorded-courses {
            margin-top: 64px;
            padding-top: 64px;
            border-top: 1px dashed var(--gray-200);
        }

        .recorded-courses .section-header {
            margin-bottom: 40px;
        }

        .recorded-courses .section-header h2 {
            font-size: 1.4rem;
        }

        .recorded-courses .section-header p {
            font-size: 0.95rem;
        }

        .recorded-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .recorded-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 24px;
            display: flex;
            align-items: center;
            gap: 20px;
            transition: var(--transition);
            border: 1px solid var(--gray-100);
        }

        .recorded-card:hover {
            border-color: var(--gold);
            background: var(--bg-white);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .recorded-card:hover .recorded-cta {
            box-shadow: var(--shadow-md);
        }

        .recorded-icon {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, var(--bg-cream) 0%, var(--bg-light-cream) 100%);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            flex-shrink: 0;
        }

        .recorded-content h4 {
            color: var(--navy-blue);
            font-size: 1.05rem;
            margin-bottom: 4px;
            font-weight: var(--font-medium);
        }

        .recorded-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            .courses-grid {
                grid-template-columns: 1fr;
            }

            .course-features {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

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

        /* ==================== 价值观 - 温暖四宫格 ==================== */
        .values {
            background: #edf4ff;
        }

        .values-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .value-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--gray-100);
            transition: var(--transition);
        }

        .value-card:hover {
            border-color: var(--gold);
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .value-icon {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, var(--bg-cream) 0%, var(--bg-light-cream) 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            border: 3px solid var(--gold-pale);
        }

        .value-card h3 {
            color: var(--navy-blue);
            font-size: 1.1rem;
            margin-bottom: 12px;
            font-weight: var(--font-medium);
        }

        .value-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        @media (max-width: 992px) {
            .values-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .values-grid {
                grid-template-columns: 1fr;
            }
        }


        /* ==================== 页脚 - 温暖底部 ==================== */
        .footer {
            background: linear-gradient(180deg, var(--navy-blue) 0%, var(--navy-blue-light) 100%);
            border-top: 1px solid var(--gray-100);
            padding: 64px 0 32px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand p {
            color: var(--gray-200);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .footer-links h4 {
            color: var(--text-white);
            font-size: 0.9rem;
            margin-bottom: 20px;
            font-weight: var(--font-medium);
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: var(--gray-200);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--text-white);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px dashed rgba(255, 255, 255, 0.2);
            padding-top: 32px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--gray-200);
            font-size: 0.85rem;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-white);
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .footer-social a:hover {
            background: var(--text-white);
            color: var(--navy-blue);
            border-color: var(--text-white);
            transform: translateY(-2px);
        }

        .footer-social-icon {
            vertical-align: middle;
        }

        @media (max-width: 768px) {
            .footer-content {
                grid-template-columns: 1fr 1fr;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }
        }

        /* ==================== 动画效果 ==================== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInSimple {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }

        @keyframes float {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
        }

        .animate-fadeInUp {
            animation: fadeInUp 0.5s ease forwards;
        }

        /* 滚动动画触发 */
        .scroll-animate {
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.5s ease;
        }

        .scroll-animate.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 延迟动画 */
        .delay-1 { transition-delay: 0.1s; }
        .delay-2 { transition-delay: 0.2s; }
        .delay-3 { transition-delay: 0.3s; }

        /* ==================== 微信小程序提示弹窗 ==================== */
        .wechat-tooltip {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--bg-white);
            padding: 32px;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            z-index: 1001;
            display: none;
            text-align: center;
            max-width: 360px;
            width: 90%;
        }

        .wechat-tooltip.show {
            display: block;
            animation: fadeInSimple 0.3s ease;
        }

        .wechat-tooltip-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(27, 54, 93, 0.4);
            z-index: 1000;
            display: none;
        }

        .wechat-tooltip-overlay.show {
            display: block;
        }

        .wechat-tooltip h4 {
            color: var(--navy-blue);
            margin-bottom: 12px;
            font-size: 1.1rem;
        }

        .wechat-tooltip p {
            color: var(--text-body);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

        .close-tooltip {
            position: absolute;
            top: 12px;
            right: 12px;
            width: 32px;
            height: 32px;
            background: var(--bg-cream);
            border: none;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .close-tooltip:hover {
            background: var(--gray-200);
            color: var(--navy-blue);
        }