/* ==================== */
/* Hero Section         */
/* ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 40%);
    animation: gradientShift 15s ease infinite;
}

/* 动态网格背景 */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    opacity: 0.5;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.4);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    color: #60a5fa;
    animation: fadeInUp 1s ease both;
}

/* 标题发光效果 */
.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #60a5fa 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease, shimmer 3s ease-in-out infinite;
    text-shadow: 0 0 80px rgba(59, 130, 246, 0.5);
    position: relative;
}

.hero h1::after {
    content: attr(data-text);
    position: absolute;
    left: 0;
    top: 0;
    z-index: -1;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: blur(20px);
    opacity: 0.5;
}

.hero p {
    font-size: 1.5rem;
    color: var(--text-gray);
    margin-bottom: 2.5rem;
    animation: fadeInUp 1s ease 0.2s both;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    animation: fadeInUp 1s ease 0.4s both;
}

/* ==================== */
/* AI Showcase Section  */
/* ==================== */
.ai-showcase {
    padding: 6rem 2rem;
    background: var(--darker-bg);
    position: relative;
    overflow: hidden;
}

.ai-showcase::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 50%, rgba(139, 92, 246, 0.12) 0%, transparent 50%),
                radial-gradient(circle at 30% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%);
}

.ai-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.ai-desc {
    color: var(--text-gray);
    font-size: 1.15rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.ai-features-list {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.ai-features-list li {
    color: var(--text-gray);
    padding: 0.6rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 1.05rem;
}

.ai-features-list li::before {
    content: '\2726';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.ai-chat-demo {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.chat-bubble {
    padding: 1rem 1.2rem;
    border-radius: 12px;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    line-height: 1.6;
}

.user-bubble {
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #93c5fd;
    margin-left: 2rem;
}

.ai-bubble {
    background: rgba(139, 92, 246, 0.12);
    border: 1px solid rgba(139, 92, 246, 0.25);
    color: #c4b5fd;
    margin-right: 2rem;
}

/* ==================== */
/* Features Section     */
/* ==================== */
.features {
    padding: 8rem 2rem;
    background: var(--dark-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(59, 130, 246, 0.3);
}

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

/* AI 高亮卡片 */
.feature-card-highlight {
    border-color: rgba(139, 92, 246, 0.3);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(139, 92, 246, 0.08));
}

.feature-card-highlight::before {
    transform: scaleX(1);
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
}

.feature-badge {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-weight: 600;
}

.feature-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.feature-icon {
    font-size: 2.5rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin: 0;
    color: var(--text-light);
}

.feature-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* ==================== */
/* Screenshots Section  */
/* ==================== */
.screenshots {
    padding: 8rem 2rem;
    background: var(--darker-bg);
}

.screenshot-container {
    max-width: 1600px;
    margin: 0 auto;
    position: relative;
    padding: 0 200px;
}

.screenshot-wrapper {
    position: relative;
    height: 750px;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 2000px;
}

.screenshot-slider {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.screenshot-slide {
    position: absolute;
    width: 1200px;
    max-width: none;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.screenshot-slide img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 10px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6);
    border: 2px solid rgba(255, 255, 255, 0.15);
}

/* 中间激活的幻灯片 */
.screenshot-slide.active {
    z-index: 3;
    opacity: 1;
    transform: translateX(0) scale(1);
}

/* 前一张（左侧） */
.screenshot-slide.prev {
    z-index: 2;
    opacity: 0.6;
    transform: translateX(-85%) scale(0.65);
    filter: brightness(0.7);
}

/* 后一张（右侧） */
.screenshot-slide.next {
    z-index: 2;
    opacity: 0.6;
    transform: translateX(85%) scale(0.65);
    filter: brightness(0.7);
}

/* 其他隐藏的幻灯片 */
.screenshot-slide.hidden {
    z-index: 1;
    opacity: 0;
    transform: scale(0.5);
    pointer-events: none;
}

.screenshot-slide.prev:hover,
.screenshot-slide.next:hover {
    opacity: 0.7;
    filter: brightness(0.8);
}

.slider-nav {
    position: absolute;
    top: 50%;
    width: calc(100% + 200px);
    left: -100px;
    display: flex;
    justify-content: space-between;
    transform: translateY(-50%);
    z-index: 10;
    pointer-events: none;
}

.slider-btn {
    pointer-events: auto;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    backdrop-filter: blur(10px);
}

.slider-btn:hover {
    background: rgba(59, 130, 246, 0.9);
    transform: scale(1.1);
    border-color: rgba(59, 130, 246, 0.6);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
}

.slider-dots {
    position: absolute;
    bottom: -3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.8rem;
    z-index: 10;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.slider-dot.active {
    background: var(--accent-color);
    transform: scale(1.3);
    border-color: rgba(255, 255, 255, 0.3);
}

.slider-dot:hover {
    background: rgba(255, 255, 255, 0.7);
}

/* ==================== */
/* Download Section     */
/* ==================== */
.download {
    padding: 8rem 2rem;
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 30% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
}

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

.version-info {
    display: inline-block;
    background: rgba(59, 130, 246, 0.1);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    margin-bottom: 2rem;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.version-info span {
    color: var(--accent-color);
    font-weight: 600;
}

.download-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 3rem;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-gray);
    margin-top: 0.5rem;
}

/* ==================== */
/* 打赏弹窗             */
/* ==================== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--card-bg);
    margin: 10% auto;
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    width: 400px;
    max-width: 90%;
    text-align: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    position: relative;
    animation: modalFadeIn 0.3s ease;
}

.close {
    color: var(--text-gray);
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: var(--text-light);
}

.modal-content img {
    max-width: 300px;
    border-radius: 10px;
    margin: 20px 0;
    border: 5px solid white;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.modal-content p {
    color: var(--text-gray);
    line-height: 1.8;
    margin-top: 20px;
    font-size: 0.95rem;
}

/* ==================== */
/* 友情链接             */
/* ==================== */
.friend-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.friend-links a {
    color: var(--text-gray);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.9rem;
}

.friend-links a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* ==================== */
/* 滚动指示器           */
/* ==================== */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: float 2s ease-in-out infinite;
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid var(--accent-color);
    border-radius: 25px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: scroll 2s ease-in-out infinite;
}

/* ==================== */
/* 所有 @keyframes 动画 */
/* ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shimmer {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

@keyframes gradientShift {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes scroll {
    0% {
        opacity: 1;
        top: 10px;
    }
    100% {
        opacity: 0;
        top: 30px;
    }
}

@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(-50px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==================== */
/* 响应式 - 首页专用    */
/* ==================== */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.2rem;
    }

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

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

    .download-stats {
        flex-direction: column;
        gap: 2rem;
    }

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