@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

:root {
    --primary-color: #2962ff;
    --secondary-color: #0039cb;
    --gradient: linear-gradient(135deg, #2962ff 0%, #0039cb 100%);
    --accent-color: #00c853;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f2f4f7;
}

header {
    background: var(--gradient);
    padding: 1rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 0.7rem 1.5rem;
    margin: 0 10px;
    border-radius: 25px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
}

nav ul li a:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

main {
    padding: 100px 20px 20px;
    max-width: 1200px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease;
}

h1 {
    font-size: 3rem;
    text-align: center;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2rem;
}

.hero-banner {
    background: linear-gradient(135deg, rgba(41,98,255,0.1) 0%, rgba(0,57,203,0.1) 100%);
    padding: 4rem 2rem;
    border-radius: 20px;
    margin-bottom: 4rem;
}

.sub-slogan {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    color: white;
    text-decoration: none;
    padding: 1rem 3rem;
    border-radius: 30px;
    font-size: 1.2rem;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 20px rgba(41,98,255,0.2);
    position: relative;
    overflow: hidden;
}

.download-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255,255,255,0.1), rgba(255,255,255,0));
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(41,98,255,0.3);
}

.download-btn:hover::before {
    transform: translateX(100%);
}

.download-icon {
    display: inline-block;
    width: 24px;
    height: 24px;
    margin-right: 10px;
    background: url('../images/download.svg') no-repeat center;
    background-size: contain;
    filter: brightness(0) invert(1);
    animation: glowPulse 2s infinite;
}

.hero-banner h1 {
    animation: rotateIn 1s ease-out;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: scale(0.8);
}

.feature-item.aos-animate {
    opacity: 1;
    transform: scale(1);
}

.feature-item:nth-child(1) { animation-delay: 0.2s; }
.feature-item:nth-child(2) { animation-delay: 0.4s; }
.feature-item:nth-child(3) { animation-delay: 0.6s; }

.stat-item {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-item.aos-animate {
    opacity: 1;
    transform: translateY(0);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    animation: floatUpDown 3s ease-in-out infinite;
}

.stat-label {
    color: #666;
    font-size: 1.1rem;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.advantage-icon {
    animation: float 3s ease-in-out infinite;
}

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

.feature-detail-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.feature-detail-item ul {
    list-style: none;
    margin-top: 1rem;
}

.feature-detail-item li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.feature-detail-item li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.tutorial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.tutorial-step {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    position: relative;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.changelog-container {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    margin-top: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.version-item {
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
    margin: 1rem 0;
}

.version-date {
    font-size: 0.9rem;
    color: #666;
    margin-left: 1rem;
}

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

.testimonial-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    text-align: center;
    animation: fadeSlideIn 0.5s ease-out;
    animation-fill-mode: backwards;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-text {
    font-style: italic;
    color: #444;
    margin-bottom: 1rem;
}

.testimonial-author {
    color: var(--primary-color);
    font-weight: 500;
}

.menu-toggle {
    display: none;
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1001;
    background: var(--primary-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    padding: 0.8rem;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: white;
    margin: 5px 0;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: var(--gradient);
    }

    nav ul {
        display: none;
        padding-top: 60px;
        flex-direction: column;
    }

    nav ul.active {
        display: flex;
    }

    nav ul li {
        width: 100%;
    }

    nav ul li a {
        display: block;
        padding: 1rem;
        margin: 0;
        text-align: center;
        border-radius: 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    main {
        padding: 0;
        max-width: none;
        width: 100vw;  /* 使用视窗宽度 */
        overflow-x: hidden;
    }

    .hero-banner {
        margin: 0;
        padding: 2rem 1rem;
        border-radius: 0;
        width: 100%;
    }

    #features,
    #tutorial,
    #changelog,
    #testimonials,
    #stats,
    #advantages {
        padding: 1rem;
        margin: 0;
        width: 100%;
    }

    .feature-grid,
    .feature-details,
    .tutorial-grid,
    .testimonials-grid,
    .stats-grid {
        gap: 0.5rem;
        padding: 0;
        width: 100%;
    }

    .feature-item,
    .feature-detail-item,
    .tutorial-step,
    .testimonial-item,
    .stat-item {
        margin: 0;
        border-radius: 0;
    }

    .changelog-container {
        margin: 0;
        border-radius: 0;
    }

    .download-btn {
        width: 100%;
        max-width: none;
        padding: 1rem;
        margin: 0.5rem 0;
    }

    .page-link-card {
        margin: 0.5rem 0;
        border-radius: 0;
        width: 100%;
    }

    .resource-buttons {
        flex-direction: column;
        width: 100%;
    }

    .resource-site-btn {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    main {
        padding: 100px 20px 20px; /* 提高上边距 */
    }

    .feature-details, 
    .tutorial-grid, 
    .testimonials-grid {
        gap: 1rem;
    }

    .step-number {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }

    .hero-banner h1 {
        font-size: 1.8rem; /* 比原来的2rem再小一点 */
        margin-bottom: 1rem;
    }

    .slogan {
        font-size: 1rem;
    }

    .sub-slogan {
        font-size: 0.9rem;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

button, .download-btn {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

button:hover, .download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

footer {
    background: #fff;
    border-top: 1px solid #eee;
    padding: 1rem 0;
    text-align: center;
    color: #666;
}

.desktop-notice {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(41,98,255,0.95);
    color: white;
    padding: 1rem;
    border-radius: 8px;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    text-align: center;
    animation: slideDown 0.5s ease;
}

.notice-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.desktop-notice button {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
}

@keyframes slideDown {
    from { transform: translate(-50%, -100%); opacity: 0; }
    to { transform: translate(-50%, 0); opacity: 1; }
}

.vip-status {
    background: linear-gradient(145deg, #ffd700, #ffa500);
}

.vip-badge {
    color: #fff;
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}

.vip-since {
    display: block;
    font-size: 0.8rem;
    opacity: 0.8;
    margin-top: 0.5rem;
}

/* 资源卡片样式优化 */
#resources {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e9f2 100%);
    margin: 2rem 0;
}

.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 2rem;
}

.resource-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.resource-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.resource-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(41,98,255,0.15);
}

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

.brand-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    transition: transform 0.3s ease;
}

.resource-content {
    text-align: center;
}

.resource-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
}

.resource-desc {
    color: #666;
    margin-bottom: 1rem;
}

.resource-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.update-tag, .hot-tag, .recommend-tag {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
}

.update-tag { background: #e3f2fd; color: #1976d2; }
.hot-tag { background: #fff3e0; color: #f57c00; }
.recommend-tag { background: #e8f5e9; color: #2e7d32; }

.resource-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: var(--gradient);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.resource-btn:hover {
    transform: translateX(5px);
}

.arrow {
    transition: transform 0.3s ease;
}

.resource-btn:hover .arrow {
    transform: translateX(5px);
}

.view-more-container {
    text-align: center;
    margin-top: 3rem;
}

.view-more-btn {
    position: relative;
    display: inline-block;
    padding: 1rem 3rem;
    color: white;
    text-decoration: none;
    font-weight: 500;
    border-radius: 30px;
    overflow: hidden;
}

.btn-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient);
    z-index: -1;
    transition: transform 0.6s ease;
}

.view-more-btn:hover .btn-background {
    transform: scale(1.1);
}

.resource-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
}

.resource-site-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: rgba(255,255,255,0.2);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.resource-site-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(41,98,255,0.2);
}

.resource-site-btn.backup {
    border-color: #4CAF50;
    color: #4CAF50;
}

.resource-site-btn.backup:hover {
    background: #4CAF50;
    color: white;
}

.resource-site-btn.delivery {
    border-color: #FF9800;
    color: #FF9800;
}

.resource-site-btn.delivery:hover {
    background: #FF9800;
    color: white;
}