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

body {
    font-family: "Arial", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--primary-color);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: bold;
    color: white;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #00a859;
}

/* Hero Section */
.hero {
    background: url("https://images.unsplash.com/photo-1542744173-8e7e53415bb0?ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&q=80&w=1170");

    background-size: cover, cover;
    background-position: center, center;
    background-repeat: no-repeat, no-repeat;
    height: 100vh;
    display: flex;
    align-items: center;
    color: white;
    text-align: center;
    margin-top: 80px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: transparent;
    -webkit-background-clip: text;
    background-clip: text;
    background-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.cta-button {
    display: inline-block;
    background: var(--accent-color);
    color: white;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: var(--border-radius-xl);
    font-weight: bold;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.cta-button:hover {
    background: #008a4a;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Features Section */
.features {
    padding: 80px 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-card {
    background: #f5f5f5;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 3px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(216, 46, 63, 0.1);
    border-color: #00a859;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: var(--primary-color);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    fill: currentColor;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-list {
    text-align: left;
    margin-top: 1.5rem;
    color: #666;
    list-style: none;
    padding: 0;
}

.feature-list li {
    position: relative;
    padding: 0.5rem 0 0.5rem 2rem;
    margin-bottom: 0.5rem;

    transition: all 0.3s ease;
}

.feature-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--accent-color);
    border-radius: 50%;
}

.feature-list li:hover {
    background: rgba(0, 168, 89, 0.05);
    border-radius: 8px;
}

/* Benefits Section */
.benefits {
    padding: 80px 0;
    background: var(--secondary-color);
}

.benefits-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.benefits-text h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
}

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

.benefits-list li {
    margin-bottom: 1rem;
    padding-left: 2rem;
    position: relative;
}

.benefits-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background: #00a859;
    border-radius: 50%;
    mask: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z"/></svg>') center/14px no-repeat;
    -webkit-mask: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z"/></svg>') center/14px no-repeat;
}

.benefit-section {
    margin-bottom: 2.5rem;
    padding: 2rem;
    background: white;
    border-radius: var(--border-radius-md);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.benefit-section:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.benefit-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.benefit-icon {
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.benefit-icon svg {
    width: 18px;
    height: 18px;
    fill: white;
}

.benefits-image {
    text-align: center;
}

.benefits-image img {
    max-width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Statistics Section */
.stats {
    padding: 60px 0;
    background: var(--primary-color);
    color: white;
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat-item h3 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    color: #eef4f5;
}

.stat-item p {
    font-size: 1.1rem;
}

/* FAQ Section */
.faq {
    padding: 80px 0;
    background: var(--secondary-color);
}

.faq h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.faq-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.faq-item {
    background: white;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.faq-question {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: white;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(216, 46, 63, 0.05);
}

.faq-question h3 {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin: 0;
    font-weight: 600;
}

.faq-icon {
    width: 24px;
    height: 24px;
    transition: var(--transition);
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq-icon svg {
    width: 100%;
    height: 100%;
    fill: var(--primary-color);
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 2rem 2rem 2rem;
    display: none;
    animation: fadeInDown 0.3s ease-out;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer ul,
.faq-answer ol {
    color: var(--text-light);
    line-height: 1.6;
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.faq-answer li {
    margin-bottom: 0.5rem;
}

.faq-answer strong {
    color: var(--primary-color);
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Join Section */
.application {
    padding: 80px 0;
    background: white;
}

.join-section {
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.join-section h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.join-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 4rem;
    line-height: 1.6;
}

.join-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.highlight-item {
    padding: 1.5rem;
    background: var(--secondary-color);
    border-radius: var(--border-radius-md);
    transition: var(--transition);
    border: 2px solid transparent;
}

.highlight-item:hover {
    border-color: var(--accent-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.highlight-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.highlight-item:hover .highlight-icon {
    background: var(--accent-color);
    transform: scale(1.1);
}

.highlight-icon svg {
    width: 30px;
    height: 30px;
    fill: white;
}

.highlight-item h3 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.highlight-item p {
    color: var(--text-light);
    font-size: 1rem;
}

.join-cta {
    margin-top: 3rem;
}

.join-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 20px 50px;
    border-radius: var(--border-radius-xl);
    font-size: 1.3rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 1.5rem;
}

.join-button:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(216, 46, 63, 0.4);
}

.button-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.button-icon svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.join-note {
    color: var(--text-light);
    font-size: 0.9rem;
    font-style: italic;
    margin-top: 1rem;
}

/* Loading animation */
@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.join-button:disabled .button-icon svg {
    animation: spin 1s linear infinite;
}

.join-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Disclaimer Section */
.disclaimer-section {
    background: var(--secondary-color);
    padding: 60px 0;
    border-top: 3px solid var(--primary-color);
}

.disclaimer-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: left;
}

.disclaimer-content h4 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin: 2rem 0 1rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.disclaimer-content h4:first-child {
    margin-top: 0;
}

.disclaimer-content h4::before {
    content: "";
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    mask: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M11 15h2v2h-2zm0-8h2v6h-2zm.99-5C6.47 2 2 6.48 2 12s4.47 10 9.99 10C17.52 22 22 17.52 22 12S17.52 2 11.99 2zM12 20c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8z"/></svg>') center/14px no-repeat;
    -webkit-mask: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M11 15h2v2h-2zm0-8h2v6h-2zm.99-5C6.47 2 2 6.48 2 12s4.47 10 9.99 10C17.52 22 22 17.52 22 12S17.52 2 11.99 2zM12 20c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8z"/></svg>') center/14px no-repeat;
    flex-shrink: 0;
}

.disclaimer-content p {
    color: var(--text-dark);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

/* Footer */
footer {
    background: var(--text-dark);
    color: white;
    padding: 60px 0 30px;
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 3rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.footer-brand {
    flex: 1;
    min-width: 250px;
}

.footer-brand h3 {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.footer-brand p {
    color: #ccc;
    line-height: 1.6;
    max-width: 400px;
    margin: 0 auto;
}

.footer-links {
    flex: 1;
    min-width: 200px;
}

.footer-links h4 {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.footer-nav {
    list-style: none;
    padding: 0;
}

.footer-nav li {
    margin-bottom: 0.8rem;
}

.footer-nav a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.footer-nav a:hover {
    color: var(--accent-color);
    transform: translateX(5px);
}

.footer-bottom {
    border-top: 2px solid var(--primary-color);
    padding-top: 2rem;
    font-size: 0.9rem;
    color: #ccc;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

.social-link svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .hero-content p:first-of-type {
        display: none;
    }

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

    .join-highlights {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .join-button {
        padding: 18px 40px;
        font-size: 1.2rem;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 2rem;
    }

    .footer-brand,
    .footer-links {
        min-width: auto;
    }

    .footer-social {
        justify-content: center;
    }

    /* FAQ mobile styles */
    .faq h2 {
        font-size: 2rem;
    }

    .faq-subtitle {
        font-size: 1.1rem;
        margin-bottom: 3rem;
    }

    .faq-question {
        padding: 1.25rem 1.5rem;
    }

    .faq-question h3 {
        font-size: 1.1rem;
    }

    .faq-answer {
        padding: 0 1.5rem 1.5rem 1.5rem;
    }

    .faq-grid {
        margin: 0 1rem;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

/* Scroll behavior */
html {
    scroll-behavior: smooth;
}

/* 统一设计系统 */
:root {
    --primary-color: #2ea2d8;
    --secondary-color: #f5f5f5;
    --accent-color: #00a859;
    --text-dark: #333;
    --text-light: #666;
    --border-radius-sm: 8px;
    --border-radius-md: 15px;
    --border-radius-lg: 20px;
    --border-radius-xl: 50px;
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* 统一所有圆角 */
.feature-card,
.form-container,
.benefits-image img,
.cta-button,
.submit-button {
    border-radius: var(--border-radius-md);
}

.feature-icon {
    border-radius: var(--border-radius-lg);
}

.form-group input,
.form-group select,
.form-group textarea {
    border-radius: var(--border-radius-sm);
}

/* 统一所有阴影 */
.feature-card {
    box-shadow: var(--shadow-sm);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
}

.form-container,
.benefits-image img {
    box-shadow: var(--shadow-lg);
}

.cta-button,
.submit-button {
    box-shadow: var(--shadow-md);
}

/* 统一颜色使用 */
.feature-card h3,
.benefits-text h2,
.application h2,
.features h2 {
    color: var(--primary-color);
}

.feature-card p,
.feature-list,
.benefits-text p {
    color: var(--text-light);
}

.feature-card,
.feature-icon,
.cta-button,
.submit-button,
.form-group input,
.form-group select,
.form-group textarea,
.feature-list li {
    transition: var(--transition);
}

.disclaimer {
    background: var(--secondary-color);
    padding: 2rem;
    margin: 2rem 0;

    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    line-height: 1.6;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.disclaimer:hover {
    transform: translateX(5px);
}

.disclaimer h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.disclaimer h4::before {
    content: "";
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    mask: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z"/></svg>') center/12px no-repeat;
    -webkit-mask: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z"/></svg>') center/12px no-repeat;
}

.cookie-consent {
    display: none;
    position: fixed;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    padding: 0;
    z-index: 10000;
    opacity: 0;
    transition: all 0.5s ease;
    max-width: 420px;

    border: 1px solid #eee;
}

.cookie-consent.show {
    display: block;
    left: 50%;
    bottom: 20px;
    transform: translateX(-50%);
    opacity: 1;
}

.cookie-content {
    padding: 25px;
}

.cookie-header h3 {
    margin: 0 0 15px 0;
    color: #333;
    font-size: 1.4rem;
    font-weight: 600;
}

.cookie-body p {
    margin: 0 0 20px 0;
    color: #666;
    line-height: 1.6;
    font-size: 0.95rem;
}

.cookie-body a {
    color: #00a859;
    text-decoration: none;
    font-weight: 500;
}

.cookie-body a:hover {
    text-decoration: underline;
}

.cookie-buttons {
    display: flex;
    gap: 12px;
    justify-content: space-evenly;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    outline: none;
}

.btn-primary {
    background: #00a859;
    color: white;
}

.btn-primary:hover {
    background: #008f4c;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 168, 89, 0.25);
}

.btn-secondary {
    background: #f5f5f5;
    color: #333;
}

.btn-secondary:hover {
    background: #e0e0e0;
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .features {
        margin-top: 50px;
    }

    .cookie-consent {
        bottom: 10px;
        left: 10px;
        right: 10px;
        max-width: 100%;
        width: 90%;
    }

    .cookie-header h3 {
        font-size: 1rem;
    }


    .cookie-content {
        padding: 20px;
    }

    .cookie-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

@media (min-width: 1200px) {
    .cookie-consent {
        bottom: 30px;
        right: 30px;
        left: auto;
        max-width: 380px;
    }
}