:root {
    --primary-color: #7c3aed;
    --primary-light: #ddd6fe;
    --secondary-color: #10b981;
    --dark-bg: #1f2937;
    --dark-text: #e5e7eb;
    --light-bg: #ffffff;
    --light-text: #1f2937;
    --section-padding: 4rem 0;
    --border-radius: 10px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg-color: var(--dark-bg);
    --text-color: var(--dark-text);
    --card-bg: #374151;
    --card-text: #e5e7eb;
    --card-border: #4b5563;
    --card-title: #e5e7eb;
}

[data-theme="light"] {
    --bg-color: var(--light-bg);
    --text-color: var(--light-text);
    --card-bg: #f9fafb;
    --card-text: #1f2937;
    --card-border: #f0f0f0;
    --card-title: #222;
}

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

body {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color, var(--light-text));
    background-color: var(--bg-color, var(--light-bg));
    transition: background-color 0.3s ease, color 0.3s ease;
    animation: fadeIn 1s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

header {
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    background-color: var(--bg-color, var(--light-bg));
    z-index: 100;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(229, 231, 235, 0.2);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.theme-toggle {
    cursor: pointer;
    font-size: 1.5rem;
}

section {
    padding: var(--section-padding);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

section.animated {
    opacity: 1;
    transform: translateY(0);
}

h1, h2, h3 {
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    position: relative;
    display: inline-block;
}

h2:after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 3rem;
    height: 3px;
    background-color: var(--primary-color);
}

p {
    margin-bottom: 1.5rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 6rem 0;
    background: linear-gradient(135deg, #7c3aed 0%, #3b82f6 100%);
    color: white;
    background-size: 200% 200%;
    animation: gradientAnimation 10s ease infinite;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

.cta {
    margin: 2rem 0;
    padding: 1rem 1.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    display: inline-block;
    font-size: 1.1rem;
    font-weight: 500;
}

.cta-badge {
    background-color: rgba(255, 255, 255, 0.25);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: inline-block;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* List Styles */
ul {
    list-style: none;
}

.what-i-do ul, .benefits ul, .group-plan ul {
    display: grid;
    grid-gap: 2rem;
    margin: 2rem 0;
}

.what-i-do ul {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.benefits ul, .group-plan ul {
    grid-template-columns: 1fr;
}

.what-i-do li, .benefits li, .group-plan li {
    background-color: var(--card-bg, #f9fafb);
    color: var(--card-text);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: flex-start;
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.what-i-do li.visible, .benefits li.visible, .group-plan li.visible {
    opacity: 1;
    transform: translateX(0);
}

.number, .icon {
    background-color: var(--primary-light);
    color: var(--primary-color);
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 1rem;
    flex-shrink: 0;
}

.icon {
    font-size: 1.2rem;
}

li p {
    margin-bottom: 0;
    color: var(--card-text);
}

.note {
    background-color: rgba(124, 58, 237, 0.1);
    padding: 1rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

/* Plans Section */
.plans .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    grid-gap: 2rem;
}

.plan-item {
    background-color: var(--card-bg, #f9fafb);
    color: var(--card-text);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: flex-start;
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.plan-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.plan-item .icon {
    font-size: 1.5rem;
    margin-right: 1.5rem;
}

.plan-item .details h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

/* Milestones Section */
.milestones {
    background-color: rgba(124, 58, 237, 0.05);
}

.milestone {
    display: flex;
    margin-bottom: 3rem;
    position: relative;
}

.milestone:not(:last-child):after {
    content: '';
    position: absolute;
    top: 3rem;
    left: 1.25rem;
    width: 2px;
    height: calc(100% + 1rem);
    background-color: var(--primary-light);
    z-index: 1;
}

.milestone .icon {
    margin-right: 2rem;
    z-index: 2;
}

.milestone .content {
    flex: 1;
}

.milestone h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.milestone .date {
    font-size: 0.9rem;
    color: var(--card-text);
    opacity: 0.7;
    margin-bottom: 0.5rem;
}

.milestone a {
    color: var(--primary-color);
    text-decoration: none;
    display: inline-block;
    margin-top: 0.5rem;
}

.milestone a:hover {
    text-decoration: underline;
}

/* Join Section */
.join {
    text-align: center;
    background: linear-gradient(135deg, #7c3aed 0%, #3b82f6 100%);
    color: white;
    background-size: 200% 200%;
    animation: gradientAnimation 10s ease infinite;
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

.action-button {
    background-color: var(--card-bg, white);
    color: var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.action-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.action-button.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Footer */
footer {
    background-color: var(--dark-bg);
    color: var(--dark-text);
    padding: 3rem 0 1.5rem;
}

footer .top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

footer h2 {
    margin-bottom: 0;
}

footer h2:after {
    display: none;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons span {
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.social-icons span:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

footer .bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
}

/* Contact Cards */
.contact-cards {
    display: none;
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 999;
}

.contact-cards.active {
    display: flex;
    gap: 1rem;
}

.card {
    background-color: var(--card-bg, var(--light-bg));
    color: var(--card-text);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    padding: 1.5rem;
    width: 250px;
    text-align: center;
}

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

.qrcode-placeholder {
    width: 180px;
    height: 180px;
    background-color: #e5e7eb;
    margin: 1rem auto;
    border-radius: var(--border-radius);
    position: relative;
    transition: transform 0.3s ease;
}

.qrcode-placeholder:after {
    content: 'QR码';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #9ca3af;
}

.qrcode-placeholder:hover {
    transform: scale(1.05);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .action-button {
        width: 100%;
        max-width: 300px;
    }
    
    footer .top {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .milestone {
        flex-direction: column;
    }
    
    .milestone .icon {
        margin-bottom: 1rem;
        margin-right: 0;
    }
    
    .milestone:not(:last-child):after {
        display: none;
    }
    
    .contact-cards {
        bottom: 1rem;
        right: 1rem;
        flex-direction: column;
    }
}

/* 添加过渡效果 */
a, button, .action-button, .theme-toggle {
    transition: all 0.3s ease;
}

/* 添加卡片悬停效果 */
.what-i-do li:hover, .benefits li:hover, .group-plan li:hover, .plan-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* 可点击元素的悬停效果 */
.action-button, .social-icons span {
    cursor: pointer;
}

.social-icons span:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

/* 渐变背景动画 */
@keyframes gradientAnimation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 为加载添加动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.hero, .join {
    background-size: 200% 200%;
    animation: gradientAnimation 10s ease infinite;
}

/* 为QR码添加过渡动画 */
.qrcode-placeholder {
    transition: transform 0.3s ease;
}

.qrcode-placeholder:hover {
    transform: scale(1.05);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .action-button {
        width: 100%;
        max-width: 300px;
    }
    
    footer .top {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .milestone {
        flex-direction: column;
    }
    
    .milestone .icon {
        margin-bottom: 1rem;
        margin-right: 0;
    }
    
    .milestone:not(:last-child):after {
        display: none;
    }
    
    .contact-cards {
        bottom: 1rem;
        right: 1rem;
        flex-direction: column;
    }
}

/* Modal 弹出层样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: var(--card-bg, white);
    color: var(--card-text);
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    padding: 2rem;
    max-width: 350px;
    width: 90%;
    text-align: center;
    position: relative;
    transform: scale(0.8);
    transition: transform 0.3s ease;
}

.modal.show .modal-content {
    transform: scale(1);
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s;
}

.close-modal:hover {
    color: var(--primary-color);
}

.qrcode-image {
    margin: 1.5rem auto;
    width: 200px;
    height: 200px;
    background-color: #f1f5f9;
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

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

#cta-badge-trigger {
    cursor: pointer;
    transition: transform 0.2s;
}

#cta-badge-trigger:hover {
    transform: scale(1.05);
}

/* 调整intro部分的背景和间距 */
.intro {
    background-color: var(--bg-color, #f9fafb);
    padding: 3rem 0;
}

/* 项目介绍卡片样式 */
.intro-card {
    background-color: var(--card-bg, #ffffff);
    border-radius: 15px;
    padding: 2rem;
    margin: 1rem 0 2rem;
    transition: transform 0.3s ease;
    border: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}

#glowing-card {
    position: relative;
    z-index: 1;
}

.glow-container {
    position: absolute;
    inset: 0;
    border-radius: 15px;
    padding: 1px;
    overflow: hidden;
    z-index: -1;
}

.glow-effect {
    position: absolute;
    width: 12px;
    height: 12px;
    background: radial-gradient(circle, rgba(124, 58, 237, 1) 0%, rgba(124, 58, 237, 0.6) 50%, transparent 70%);
    border-radius: 50%;
    filter: blur(4px);
    animation: moveGlow 3s linear infinite;
    transform: translateX(-50%) translateY(-50%);
    pointer-events: none;
}

/* 单独处理鼠标跟踪光效的样式 */
.glow-effect-mouse {
    position: absolute;
    width: 40px;
    height: 40px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.6) 0%, rgba(124, 58, 237, 0.2) 50%, transparent 70%);
    border-radius: 50%;
    filter: blur(8px);
    transform: translateX(-50%) translateY(-50%);
    pointer-events: none;
    z-index: -1;
}

@keyframes moveGlow {
    /* 上边缘从左到右 */
    0% { top: 2px; left: 2px; }
    12.5% { top: 2px; left: 50%; }
    25% { top: 2px; left: calc(100% - 2px); }
    
    /* 右边缘从上到下 */
    28% { top: 10%; left: calc(100% - 2px); }
    32% { top: 25%; left: calc(100% - 2px); }
    36% { top: 50%; left: calc(100% - 2px); }
    40% { top: 75%; left: calc(100% - 2px); }
    50% { top: calc(100% - 2px); left: calc(100% - 2px); }
    
    /* 下边缘从右到左 */
    62.5% { top: calc(100% - 2px); left: 50%; }
    75% { top: calc(100% - 2px); left: 2px; }
    
    /* 左边缘从下到上 */
    78% { top: 75%; left: 2px; }
    82% { top: 50%; left: 2px; }
    86% { top: 25%; left: 2px; }
    90% { top: 10%; left: 2px; }
    100% { top: 2px; left: 2px; }
}

.card-content {
    position: relative;
    background-color: var(--card-bg, #ffffff);
    border-radius: 13px;
    height: 100%;
    width: 100%;
    z-index: 2;
}

/* 修改悬停效果，不改变主动画速度 */
.intro-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.intro-card h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--card-title, #222);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--card-border, #eee);
    font-weight: 600;
}

.intro-card h2:after {
    display: none;
}

.intro-content {
    padding-top: 0.8rem;
}

.intro-card p {
    color: var(--card-text, #333333);
    line-height: 1.8;
    margin-bottom: 1rem;
    font-size: 1.05rem;
    font-weight: 500;
}

.intro-card p:last-child {
    margin-bottom: 0;
}

.modal-content h3 {
    color: var(--card-title);
}

.modal-content p {
    color: var(--card-text);
}