/* ========== CSS Reset & Base ========== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            /* 蓝白金主题配色方案 */
            --bg-primary: #F7FAFF;
            --bg-secondary: #EDF3FC;
            --bg-card: #ffffff;
            --color-primary: #163B6B;
            --color-primary-light: #2C5B97;
            --color-accent: #CFA43A;
            --color-accent-light: #E0B74A;
            --color-text: #2C3F5A;
            --color-text-secondary: #516680;
            --color-text-muted: #6A7E98;
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            background-color: var(--bg-primary);
            color: var(--color-text);
            line-height: 1.7;
            overflow-x: hidden;
        }

        /* ========== Container ========== */
        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        /* ========== Animations ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

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

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

        .animate-on-scroll {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

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

        /* ========== Header ========== */
        .header {
            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);
            transition: var(--transition);
        }

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

        .header-cta {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: white;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }

        .header-cta:hover {
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        /* ========== Hero Section ========== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-text {
            animation: fadeInUp 1s ease;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, rgba(201, 169, 98, 0.15), rgba(201, 169, 98, 0.25));
            color: var(--color-accent);
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(201, 169, 98, 0.3);
        }

        .hero-badge::before {
            content: '✨';
        }

        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 16px;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--color-text-secondary);
            margin-bottom: 32px;
        }

        .hero-features {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }

        .hero-feature {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-card);
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-soft);
            font-size: 0.95rem;
            color: var(--color-text);
            font-weight: 500;
            border: 1px solid rgba(201, 169, 98, 0.2);
            transition: var(--transition);
        }

        .hero-feature:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
        }

        .hero-feature-icon {
            width: 24px;
            height: 24px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
        }

        .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: white;
            padding: 18px 40px;
            border-radius: var(--radius-md);
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 600;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .hero-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(27, 54, 93, 0.3);
        }

        .hero-cta-arrow {
            transition: transform 0.3s ease;
        }

        .hero-cta:hover .hero-cta-arrow {
            transform: translateX(4px);
        }

        .hero-visual {
            position: relative;
            animation: fadeIn 1.2s ease;
            animation-delay: 0.3s;
            animation-fill-mode: backwards;
        }

        .hero-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-soft);
            position: relative;
            border: 1px solid rgba(201, 169, 98, 0.2);
        }

        .hero-card-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hero-card-title::before {
            content: '';
        }

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

        .hero-stat {
            text-align: center;
            padding: 20px;
            background: rgba(201, 169, 98, 0.1);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border: 1px solid rgba(201, 169, 98, 0.2);
        }

        .hero-stat:hover {
            transform: translateY(-4px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
        }

        .hero-stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 8px;
        }

        .hero-stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }

        .hero-note {
            margin-top: 24px;
            padding: 16px;
            background: linear-gradient(135deg, rgba(201, 169, 98, 0.1), rgba(201, 169, 98, 0.15));
            border-radius: var(--radius-sm);
            border-left: 4px solid var(--color-accent);
        }

        .hero-note-text {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
        }

        .hero-note-text strong {
            color: var(--color-accent);
        }

        /* ========== Section Base ========== */
        section {
            padding: 100px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-tag {
            display: inline-block;
            background: linear-gradient(135deg, rgba(201, 169, 98, 0.15), rgba(201, 169, 98, 0.25));
            color: var(--color-accent);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 1px;
            border: 1px solid rgba(201, 169, 98, 0.3);
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 1.1rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        /* ========== Target Audience ========== */
        .audience {
            background: var(--bg-secondary);
        }

        .audience-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            max-width: 900px;
            margin: 0 auto;
        }

        .audience-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow-soft);
            border: 1px solid rgba(201, 169, 98, 0.2);
        }

        .audience-card:hover {
            transform: translateY(-8px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
        }

        .audience-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 24px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 36px;
        }

        .audience-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
        }

        .audience-desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        /* ========== Course Highlights ========== */
        .highlights {
            background: var(--bg-primary);
        }

        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .highlight-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 30px;
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow-soft);
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(201, 169, 98, 0.2);
        }

        .highlight-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

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

        .highlight-card:hover {
            transform: translateY(-8px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
        }

        .highlight-icon {
            width: 70px;
            height: 70px;
            margin: 0 auto 24px;
            background: linear-gradient(135deg, rgba(201, 169, 98, 0.15), rgba(201, 169, 98, 0.25));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            transition: var(--transition);
            border: 1px solid rgba(201, 169, 98, 0.3);
        }

        .highlight-card:hover .highlight-icon {
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            transform: scale(1.1);
        }

        .highlight-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
        }

        .highlight-desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== Curriculum ========== */
        .curriculum {
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
        }

        .curriculum-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .curriculum-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 36px;
            transition: var(--transition);
            box-shadow: var(--shadow-soft);
            position: relative;
            border: 1px solid rgba(201, 169, 98, 0.2);
        }

        .curriculum-card:hover {
            transform: translateY(-6px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
        }

        .curriculum-number {
            position: absolute;
            top: 24px;
            right: 24px;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            color: white;
        }

        .curriculum-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            padding-right: 60px;
        }

        .curriculum-subtitle {
            font-size: 0.9rem;
            color: var(--color-accent);
            font-weight: 600;
            margin-bottom: 20px;
        }

        .curriculum-list {
            list-style: none;
        }

        .curriculum-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        .curriculum-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--color-accent);
            font-weight: 700;
        }

        /* ========== Instructor ========== */
        .instructor {
            background: var(--bg-primary);
            position: relative;
        }

        .instructor-content {
            display: grid;
            grid-template-columns: 350px 1fr;
            gap: 60px;
            align-items: center;
            max-width: 1000px;
            margin: 0 auto;
        }

        .instructor-avatar {
            position: relative;
        }

        .instructor-avatar-main {
            width: 100%;
            aspect-ratio: 1;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 120px;
            box-shadow: var(--shadow-hover);
            position: relative;
            overflow: hidden;
        }

        .instructor-avatar-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center top;
            display: block;
        }

        .instructor-badge {
            position: absolute;
            bottom: 20px;
            right: -10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            color: white;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 700;
            box-shadow: var(--shadow-hover);
        }

        .instructor-info {
            padding-left: 20px;
        }

        .instructor-name {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .instructor-title {
            font-size: 1.1rem;
            color: var(--color-accent);
            font-weight: 600;
            margin-bottom: 24px;
        }

        .instructor-bio {
            font-size: 1rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
        }

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

        .credential-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 16px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border: 1px solid rgba(201, 169, 98, 0.2);
        }

        .credential-item:hover {
            background: rgba(201, 169, 98, 0.1);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-soft);
        }

        .credential-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .credential-text {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        .credential-text strong {
            color: var(--color-primary);
            display: block;
            margin-bottom: 2px;
        }

        /* ========== Benefits ========== */
        .benefits {
            background: var(--bg-secondary);
        }

        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .benefit-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 36px;
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow-soft);
            border: 1px solid rgba(201, 169, 98, 0.2);
        }

        .benefit-card:hover {
            transform: translateY(-6px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-hover);
        }

        .benefit-icon {
            width: 70px;
            height: 70px;
            margin: 0 auto 24px;
            /* 提升对比度：浅底深色图标，避免白色图标不清晰 */
            background: linear-gradient(135deg, #f2f7ff 0%, #e7f0ff 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            color: var(--color-primary);
            border: 1px solid rgba(44, 91, 151, 0.25);
        }

        .benefit-icon svg {
            stroke: currentColor;
        }

        .benefit-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
        }

        .benefit-desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .benefit-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
        }

        .benefit-tag {
            background: rgba(201, 169, 98, 0.15);
            color: var(--color-accent);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid rgba(201, 169, 98, 0.3);
        }

        /* ========== Student Reviews ========== */
        .reviews {
            background: var(--bg-primary);
        }

        .reviews-marquee {
            display: flex;
            gap: 16px;
            overflow: hidden;
            position: relative;
            mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
            -webkit-mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
        }

        .reviews-track {
            display: flex;
            gap: 16px;
            min-width: max-content;
            animation: reviewsMarquee 88s linear infinite;
            will-change: transform;
        }

        .reviews-track[aria-hidden="true"] {
            animation-delay: -44s;
        }

        .reviews-marquee:hover .reviews-track {
            animation-play-state: paused;
        }

        .review-card {
            flex: 0 0 340px;
            background: var(--bg-card);
            border: 1px solid rgba(201, 169, 98, 0.25);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-soft);
            padding: 22px 20px 18px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 178px;
        }

        .review-card p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.72;
            margin-bottom: 12px;
        }

        .review-meta {
            font-size: 0.78rem;
            color: var(--color-accent);
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        @keyframes reviewsMarquee {
            from {
                transform: translateX(0);
            }
            to {
                transform: translateX(calc(-100% - 16px));
            }
        }

        /* ========== Registration ========== */
        .registration {
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
            position: relative;
            overflow: hidden;
        }

        .registration .section-title {
            color: var(--color-primary);
        }

        .registration .section-desc {
            color: var(--color-text-secondary);
        }

        .registration-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .registration-steps {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 24px;
            background: rgba(201, 169, 98, 0.1);
            border-radius: var(--radius-md);
            transition: var(--transition);
            border: 1px solid rgba(201, 169, 98, 0.2);
        }

        .step-item:hover {
            background: rgba(201, 169, 98, 0.15);
            border-color: var(--color-accent);
            transform: translateX(8px);
            box-shadow: var(--shadow-hover);
        }

        .step-number {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .step-content h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-primary);
        }

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

        .registration-qr {
            text-align: center;
        }

        .qr-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            display: inline-block;
            box-shadow: var(--shadow-soft);
            border: 1px solid rgba(201, 169, 98, 0.3);
        }

        .qr-placeholder {
            width: 200px;
            height: 200px;
            background: linear-gradient(135deg, rgba(201, 169, 98, 0.1), rgba(201, 169, 98, 0.15));
            border-radius: var(--radius-sm);
            margin-bottom: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-size: 60px;
            color: var(--color-accent);
            border: 2px dashed rgba(201, 169, 98, 0.3);
        }

        .qr-placeholder-img {
            width: 200px;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 20px;
            border: 2px solid rgba(201, 169, 98, 0.28);
            box-shadow: 0 6px 18px rgba(27, 54, 93, 0.12);
            background: #fff;
            padding: 4px;
        }

        .qr-placeholder span {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 12px;
        }

        .qr-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .qr-desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
        }

        /* ========== Footer ========== */
        .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;
            color: var(--text-white);
        }

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

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
            list-style: none;
        }

        .footer-links a {
            color: var(--gray-200);
            font-size: 0.9rem;
            transition: var(--transition);
            text-decoration: none;
        }

        .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;
            margin-top: 32px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        .footer-social a {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-white);
            transition: var(--transition);
            text-decoration: none;
        }

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

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

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero-title {
                font-size: 2.8rem;
            }

            .hero-visual {
                max-width: 500px;
                margin: 0 auto;
            }

            .highlights-grid,
            .benefits-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .instructor-content {
                grid-template-columns: 280px 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 70px 0;
            }

            .section-title {
                font-size: 2rem;
            }

            .hero {
                padding: 100px 0 60px;
                min-height: auto;
            }

            .hero-title {
                font-size: 2.2rem;
            }

            .hero-subtitle {
                font-size: 1.1rem;
            }

            .hero-features {
                gap: 12px;
            }

            .hero-feature {
                padding: 8px 14px;
                font-size: 0.85rem;
            }

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

            .highlights-grid,
            .benefits-grid {
                grid-template-columns: 1fr;
            }

            .instructor-content {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .instructor-avatar {
                max-width: 280px;
                margin: 0 auto;
            }

            .instructor-credentials {
                grid-template-columns: 1fr;
            }

            .registration-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .reviews-marquee {
                overflow-x: auto;
                mask-image: none;
                -webkit-mask-image: none;
                padding-bottom: 8px;
                scroll-snap-type: x mandatory;
            }

            .reviews-track {
                animation: none;
                gap: 12px;
            }

            .review-card {
                flex-basis: min(320px, 86vw);
                scroll-snap-align: start;
                min-height: 164px;
            }

            .footer-content {
                grid-template-columns: 1fr 1fr;
            }

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

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

            .header-content {
                height: 60px;
            }

            .header-cta {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }

            .hero-title {
                font-size: 1.8rem;
            }

            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .hero-stat {
                padding: 16px 12px;
            }

            .hero-stat-number {
                font-size: 2rem;
            }

            .hero-card {
                padding: 24px;
            }

            .section-title {
                font-size: 1.7rem;
            }

            .curriculum-card {
                padding: 28px;
            }

            .instructor-name {
                font-size: 1.8rem;
            }

            .review-card {
                flex-basis: min(300px, 88vw);
                padding: 18px 16px 14px;
            }

            .review-card p {
                font-size: 0.9rem;
            }
        }

        /* ========== QR Code Popup ========== */
        .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;
        }

        .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);
        }

        .qr-code-img {
            width: 160px;
            height: 160px;
            margin: 0 auto;
            border-radius: var(--radius-lg);
            display: block;
        }