/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-red: #E60012;
    --primary-red-gradient: linear-gradient(135deg, #E60012 5%, #C4000F 100%);
    --secondary-orange: #FB923C;
    --text-primary: #1D1D1F;
    --text-secondary: #6B7280;
    --text-light: rgba(255, 255, 255, 0.9);
    --bg-light: rgba(249, 250, 251, 0.5);
    --border-color: #E5E7EB;
    --white: #FFFFFF;
    --shadow-sm: 0px 2px 12px 0px rgba(0, 0, 0, 0.04);
    --shadow-md: 0px 4px 20px 0px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0px 8px 30px 0px rgba(230, 0, 18, 0.08);
    --shadow-xl: 0px 8px 32px 0px rgba(230, 0, 18, 0.25);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero-section {
    background: #f5f5f5;
    padding: 80px 0 120px;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 1376px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: #FEF2F2;
    border-radius: 9999px;
    margin-bottom: 44px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--primary-red);
    border-radius: 50%;
}

.badge-text {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.6px;
    color: var(--primary-red);
}

.hero-title {
    font-size: 36px;
    font-weight: 900;
    line-height: 40px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 16px;
    line-height: 24px;
    color: var(--text-secondary);
    margin-bottom: 80px;
}

.quiz-card {
    display: block;
    background: #FFFFFF;
    border: 1px solid #E5E7EB;
    border-radius: 16px;
    padding: 33px;
    max-width: 672px;
    margin: 0 auto;
    box-shadow: 0px 2px 8px 0px rgba(0, 0, 0, 0.05);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.quiz-card:hover {
    background: linear-gradient(90deg, #FEF2F2 0%, #FFF7ED 100%);
    border-color: var(--border-color);
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.quiz-description {
    font-size: 16px;
    line-height: 24px;
    color: #374151;
    text-align: center;
    margin-bottom: 27px;
}

.btn-primary {
    display: inline-block;
    padding: 13px 47px;
    background: var(--primary-red-gradient);
    color: var(--white);
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    line-height: 17px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0px 8px 32px 0px rgba(230, 0, 18, 0.4);
}

/* Banner Section */
.banner-section {
    position: relative;
    width: 100%;
    height: 569px;
    overflow: hidden;
}

.banner-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:#000103 url('images/banner-bg.jpg');
    /* background-size: cover; */
    background-position: 30% 0;
    background-repeat: no-repeat;
}

.banner-section .container {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 0;
}

.banner-content-wrapper {
    max-width: 950px;
    width: 100%;
    text-align: center;
}

.banner-text-content {
    margin-bottom: 32px;
    text-align: center;
}

.banner-title {
    font-family: 'Source Han Sans', sans-serif;
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 900;
    line-height: 1.77;
    color: var(--white);
    margin-bottom: 24px;
    text-align: center;
}

.banner-subtitle {
    font-size: clamp(16px, 2.5vw, 26px);
    font-weight: 400;
    line-height: 1.24;
    color: #959595;
    text-align: center;
}

.btn-banner-download {
    display: inline-flex;
    align-items: center;
    gap: 24px;
    padding: 22px 72px;
    background: linear-gradient(104deg, #E60012 0%, #C4000F 100%);
    border: none;
    border-radius: 12px;
    box-shadow: 0px 0px 32.23px 0px rgba(230, 0, 18, 0.482);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-banner-download:hover {
    transform: translateY(-2px);
    box-shadow: 0px 4px 40px 0px rgba(230, 0, 18, 0.6);
}

.btn-banner-download svg {
    flex-shrink: 0;
}

.download-text {
    font-size: 18px;
    font-weight: 600;
    line-height: 20px;
    color: rgba(255, 255, 255, 0.8);
    white-space: nowrap;
}

.pdf-title {
    font-size: 20px;
    font-weight: 700;
    line-height: 17px;
    color: var(--white);
    white-space: nowrap;
}

/* Product Section */
.product-section {
    background: #f5f5f5;
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: #FEF2F2;
    border-radius: 9999px;
    margin-bottom: 44px;
}

.section-title {
    font-size: 36px;
    font-weight: 900;
    line-height: 40px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 16px;
    line-height: 24px;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 48px;
}

.product-card {
    display: flex;
    align-items: center;
    gap: 13px;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 27px 19px;
    transition: all 0.3s ease;
    box-shadow: 0px 2px 12px 0px rgba(0, 0, 0, 0.04);
    text-decoration: none;
    color: inherit;
    height: 97px;
    box-sizing: border-box;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-red);
    background: linear-gradient(135deg, #FEF2F2 0%, #FFFFFF 100%);
}

.product-card.featured {
    border-color: var(--primary-red);
    box-shadow: var(--shadow-md);
}

.product-card.featured:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-red);
}

.product-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.product-icon.red-bg {
    background: #FEF2F2;
}

.product-icon.blue-bg {
    background: #EFF6FF;
}

.product-icon.green-bg {
    background: #F0FDF4;
}

.product-icon.purple-bg {
    background: #FAF5FF;
}

.product-icon.orange-bg {
    background: #FFFBEB;
}

.product-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.product-name {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 700;
    line-height: 24px;
    margin: 0;
    color: #252525;
}

.product-name.highlight {
    color: var(--primary-red);
}

.product-desc {
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 400;
    line-height: 16px;
    margin: 0;
    color: #9CA3AF;
}

.product-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-gradient {
    padding: 21px 32px;
    background: var(--primary-red-gradient);
    color: var(--white);
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    line-height: 17px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-outline {
    padding: 21px 32px;
    background: var(--white);
    border: 2px solid var(--border-color);
    color: #374151;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    line-height: 17px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    border-color: var(--primary-red);
    color: var(--primary-red);
}

/* Steps Section */
.steps-section {
    background: var(--white);
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: #FEF2F2;
    border-radius: 9999px;
    margin-bottom: 44px;
}

.section-title {
    font-size: 36px;
    font-weight: 900;
    line-height: 40px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 16px;
    line-height: 24px;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto;
}

/* Activity Time Card */
.activity-time-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1024px;
    height: 54px;
    margin: 0 auto 46px;
    position: relative;
}

.time-gradient-left,
.time-gradient-right {
    flex: 1;
    height: 1px;
}

.time-gradient-left {
    background: linear-gradient(90deg, rgba(0, 0, 0, 0) 0%, #E5E7EB 100%);
}

.time-gradient-right {
    background: linear-gradient(270deg, rgba(0, 0, 0, 0) 0%, #E5E7EB 100%);
}

.activity-time-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 25px;
    background: #FEF2F2;
    border: 1px solid #E5E5E5;
    border-radius: 16px;
    height: 54px;
    box-sizing: border-box;
    flex-shrink: 0;
}

.time-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.time-text {
    font-family: 'Inter', sans-serif;
    font-size: 18px;
    font-weight: 700;
    line-height: 20px;
    color: #E60012;
    white-space: nowrap;
}

/* Steps Grid */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 1024px;
    margin: 0 auto 64px;
}

.step-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0px 4px 20px 0px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.step-card:hover {
    transform: translateY(-4px);
    box-shadow: 0px 8px 30px 0px rgba(0, 0, 0, 0.1);
}

.step-card-header {
    height: 4px;
    width: calc(100% - 2px);
    margin-left: 1px;
}

.step-card-header.red-gradient {
    background: linear-gradient(90deg, #E60012 0%, #FB923C 100%);
}

.step-card-header.orange-gradient {
    background: linear-gradient(90deg, #FB923C 0%, #E60012 100%);
}

.step-card-body {
    padding: 33px;
}

.step-icon-wrapper {
    margin-bottom: 16px;
}

.step-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0px 4px 20px 0px rgba(0, 0, 0, 0.06);
}

.step-icon.red-bg {
    background: linear-gradient(135deg, #E60012 5%, #C4000F 100%);
}

.step-icon.dark-bg {
    background: #111827;
}

.step-number-text {
    font-family: 'Rajdhani', sans-serif;
    font-size: 24px;
    font-weight: 700;
    line-height: 32px;
    color: var(--white);
}

.step-card-title {
    font-size: 18px;
    font-weight: 700;
    line-height: 28px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.step-card-desc {
    font-size: 14px;
    line-height: 22.75px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.step-card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-red);
    text-decoration: none;
    transition: gap 0.3s ease;
}

.step-card-link:hover {
    gap: 12px;
}

.step-card-link svg {
    transition: transform 0.3s ease;
}

.step-card-link:hover svg {
    transform: translateX(4px);
}

/* Reward Card New */
.reward-card-new {
    position: relative;
    background: linear-gradient(101deg, #E60012 0%, #C4000F 100%);
    border-radius: 16px;
    padding: 19px 31px;
    max-width: 520px;
    height: 104px;
    margin: 0 auto;
    box-shadow: 0px 8px 32px 0px rgba(230, 0, 18, 0.25);
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: 25px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.reward-card-new:hover {
    transform: translateY(-4px);
    box-shadow: 0px 12px 40px 0px rgba(230, 0, 18, 0.35);
}

.reward-icon-container {
    width: 64px;
    height: 64px;
    background: #CC0000;
    border: 2px solid #E5E5E5;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    backdrop-filter: blur(4px);
}

.reward-text-wrapper {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
}

.reward-description {
    font-family: 'Inter', sans-serif;
    font-size: 20px;
    font-weight: 700;
    line-height: 28px;
    color: #FFFFFF;
    margin: 0;
    white-space: nowrap;
}

.reward-heading {
    font-family: 'Inter', sans-serif;
    font-size: 30px;
    font-weight: 900;
    line-height: 36px;
    letter-spacing: 1.5px;
    color: #FFFFFF;
    margin: 0;
    white-space: nowrap;
}

/* Footer Section */
.footer-section {
    background: #090f20;
    padding: 50px 0;
    position: relative;
    overflow: hidden;
}

.footer-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
    pointer-events: none;
}

.footer-section::before {
    background: 
        radial-gradient(circle at 25% 0%, var(--white) 0%, transparent 50%),
        radial-gradient(circle at 62% 44%, var(--white) 0%, transparent 30%);
}

.footer-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.footer-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 21px;
    background: #fff;
    backdrop-filter: blur(4px);
    border-radius: 9999px;
    margin-bottom: 62px;
}

.footer-title {
    font-size: 36px;
    font-weight: 900;
    line-height: 40px;
    margin-bottom: 16px;
    color: var(--white);
}

.footer-subtitle {
    font-size: 20px;
    font-weight: 500;
    line-height: 28px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 38px;
}

.footer-dots {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.dot {
    width: 48px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 9999px;
}

.dot.active {
    background: var(--white);
}


/* 题目区域 */
        .quiz-section {
            background-color: white;
            padding: 25px;
            border-radius: 8px;
            margin-bottom: 30px;
            text-align: left;
        }
        .quiz-item {
            margin-bottom: 40px;
        }
        .quiz-question {           
            margin-bottom: 20px;
            font-weight: bold;
        }
        .quiz-options {
            list-style: none;                   
            margin-bottom: 10px;
        }
        .quiz-options li {
            margin-bottom: 5px;
        }
        .answer-btn {
            background-color: #ffdddd;
            color: #dc3545;
            padding: 4px 10px;
            border-radius: 4px;           
            display: inline-block;
            text-decoration: none;
        }
        .answer-btn:hover{background: #dc3545;color: #fff;}
        .btn-submit {
            display: block;
            width: 160px;
            height: 40px;
            line-height: 40px;
            background-color: #dc3545;
            color: white;
            text-align: center;
            border-radius: 4px;
            text-decoration: none;            
            margin: 0 auto;
        }
        .btn-submit:hover{background: #f74f5f;}

        .intro-box {
            background-color: #f5f5f5;
            padding: 25px;            
            margin: 30px 0;           
        }
        .intro-highlight {
            color: #dc3545;
            font-weight: bold;
            margin: 15px 0;
        }
        .intro-list {
            list-style: none;
            margin-bottom: 10px;
            
        }
        .intro-list li{
          position: relative;padding-left: 25px;
        }
        .intro-list li::before {
            content: "";
            color: #dc3545;
            margin-right: 8px;
            width: 17px;height: 17px;background: url(images/icon-01.png) no-repeat;display: inline-block;top: 4px;left: 0; position: absolute;
        }

/* Responsive Design */
@media (max-width: 1200px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .timeline-card {
        width: 100%;
    }
    .banner-content-wrapper{
        max-width: 750px;
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0 80px;
    }
    
    .hero-title {
        font-size: 28px;
        line-height: 32px;
    }
    
    .section-title,
    .footer-title {
        font-size: 28px;
        line-height: 32px;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-cta {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-gradient,
    .btn-outline {
        text-align: center;
    }
    
    .timeline {
        padding: 0 20px;
    }
    
    .timeline-item {
        flex-direction: column;
        align-items: center;
    }
    
    .timeline-badge {
        position: relative;
        left: auto;
        transform: none;
        margin-bottom: 24px;
    }
    
    .timeline-card {
        margin: 0 !important;
    }
    
    .reward-card {
        padding: 32px 24px;
    }
    
    /* Updated banner responsive styles */
    .banner-section {
        height: 500px;
    }
    
    .banner-background {
        background-position: center;
        background-size: cover;
    }
    
    .banner-section .container {
        padding-right: 20px;
        justify-content: center;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .banner-content-wrapper {
        max-width: 100%;
    }
    
    .banner-title {
        font-size: 36px;
        line-height: 1.5;
        text-align: center;
    }
    
    .banner-subtitle {
        font-size: 20px;
        line-height: 1.4;
        text-align: center;
    }
    
    .btn-banner-download {
        padding: 18px 36px;
        gap: 16px;
        flex-direction: column;
        min-width: 200px;
    }
    
    .download-text {
        font-size: 17px;
    }
    
    .pdf-title {
        font-size: 14px;
    }
    
    /* Reward Card New responsive */
    .reward-card-new {
        max-width: 100%;
        height: auto;
        min-height: 90px;
        padding: 16px 24px;
        gap: 20px;
    }
    
    .reward-icon-container {
        width: 56px;
        height: 56px;
    }
    
    .reward-description {
        font-size: 16px;
        line-height: 24px;
    }
    
    .reward-heading {
        font-size: 24px;
        line-height: 32px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-section {
        padding: 40px 0 60px;
    }
    
    .hero-title {
        font-size: 24px;
        line-height: 28px;
    }
    
    .hero-subtitle {
        font-size: 14px;
    }
    
    .quiz-card {
        padding: 24px;
    }
    
    .section-title,
    .footer-title {
        font-size: 24px;
        line-height: 28px;
    }
    
    .product-section,
    .steps-section {
        padding: 60px 0;
    }
    
    .card-content {
        padding: 24px;
    }
    
    .step-title {
        font-size: 16px;
    }
    
    .reward-card {
        padding: 24px 16px;
    }
    
    .reward-title {
        font-size: 24px;
    }
    
    .footer-section {
        padding: 60px 0;
    }
    
    /* Small screen banner adjustments */
    .banner-section {
        height: 450px;
    }
    
    .banner-section .container {
        padding-right: 16px;
        padding-left: 16px;
    }
    
    .banner-title {
        font-size: 28px;
        line-height: 1.4;
        margin-bottom: 16px;
    }
    
    .banner-subtitle {
        font-size: 18px;
        line-height: 1.3;
        margin-bottom: 24px;
    }
    
    .btn-banner-download {
        padding: 16px 24px;
        gap: 12px;
        min-width: 180px;
    }
    
    .download-text {
        font-size: 16px;
    }
    
    .pdf-title {
        font-size: 14px;
    }
    
    /* Reward Card New small screen */
    .reward-card-new {
        padding: 14px 20px;
        gap: 16px;
        min-height: 80px;
    }
    
    .reward-icon-container {
        width: 48px;
        height: 48px;
    }
    
    .reward-icon-container img {
        width: 24px;
        height: 24px;
    }
    
    .reward-description {
        font-size: 14px;
        line-height: 20px;
    }
    
    .reward-heading {
        font-size: 20px;
        line-height: 28px;
        letter-spacing: 1px;
    }
}