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

body {
    /* 柔和的茶汤色背景 */
    background: #fef8ed radial-gradient(circle at 10% 20%, rgba(210, 180, 140, 0.08) 2%, transparent 2.5%);
    background-size: 28px 28px;
    font-family: 'Inter', 'Quicksand', system-ui, -apple-system, 'Segoe UI', sans-serif;
    color: #2e241f;
    line-height: 1.5;
    scroll-behavior: smooth;
}

/* 整体容器 */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 (纯装饰占位，平滑跳转) */
.navbar {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
    padding: 1.2rem 0;
    background: rgba(255, 248, 235, 0.85);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid #f0e0ce;
    font-weight: 500;
}
.navbar a {
    text-decoration: none;
    color: #7b4a2e;
    font-size: 1rem;
    transition: 0.2s;
    font-family: 'Quicksand', sans-serif;
    font-weight: 600;
    padding: 0.3rem 0;
    border-bottom: 2px solid transparent;
}
.navbar a:hover {
    color: #c26e3c;
    border-bottom-color: #e2b58b;
}

/* 通用板块样式 */
section {
    margin: 5rem 0;
    scroll-margin-top: 80px;
}
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    font-family: 'Quicksand', sans-serif;
    color: #4d2f1c;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 12px;
    border-left: 6px solid #e2a56a;
    padding-left: 20px;
}
.section-title i {
    color: #d9914a;
    font-size: 2rem;
}

/* Hero 主视觉区 */
.hero {
    text-align: center;
    padding: 3rem 1rem 2rem;
    background: linear-gradient(135deg, #fff5e8 0%, #ffefdf 100%);
    border-radius: 3rem;
    margin-top: 1.5rem;
    box-shadow: 0 12px 28px rgba(99, 57, 34, 0.08);
    border: 1px solid #ffe2c9;
}
.mod-icon {
    font-size: 5rem;
    filter: drop-shadow(4px 6px 12px rgba(0,0,0,0.1));
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
    100% { transform: translateY(0px); }
}
.hero h1 {
    font-size: 3.3rem;
    font-weight: 800;
    font-family: 'Quicksand', sans-serif;
    background: linear-gradient(135deg, #b6632e, #f0a15b);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    margin: 0.5rem 0 0.5rem;
    letter-spacing: -0.5px;
}
.hero .tagline {
    font-size: 1.2rem;
    color: #7c5a42;
    background: #fff0e2;
    display: inline-block;
    padding: 0.4rem 1.2rem;
    border-radius: 60px;
    font-weight: 500;
    backdrop-filter: blur(2px);
    margin-top: 0.5rem;
}
.hero-buttons {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: white;
    border: 1px solid #e4c8ae;
    padding: 0.75rem 1.8rem;
    border-radius: 60px;
    font-weight: 600;
    color: #784a28;
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 1rem;
    cursor: default;  /* 占位按钮，无实际跳转 */
}
.btn-primary {
    background: #d47e3e;
    border-color: #b8622a;
    color: white;
    box-shadow: 0 4px 8px rgba(180, 90, 30, 0.2);
}
.btn-primary i, .btn i {
    font-size: 1rem;
}
.btn-primary:hover {
    background: #bc672f;
    transform: translateY(-2px);
    cursor: default;
}
.btn-outline:hover {
    background: #f7ede3;
    transform: translateY(-2px);
    cursor: default;
}

/* 关于模组卡片 */
.about-card {
    abt-background: #ffffffdd;
    backdrop-filter: blur(2px);
    background: white;
    border-radius: 2rem;
    padding: 2rem;
    box-shadow: 0 12px 30px rgba(0,0,0,0.05);
    border: 1px solid #f5e2d0;
    font-size: 1.05rem;
}
.about-card p {
    margin-bottom: 1rem;
    color: #3f2c1e;
}
.placeholder-text {
    color: #a58364;
    font-style: italic;
    border-left: 3px solid #e7c9ae;
    padding-left: 1rem;
}

/* 特性网格 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.8rem;
    margin-top: 1rem;
}
.feature-card {
    background: white;
    border-radius: 1.8rem;
    padding: 1.6rem;
    transition: all 0.25s ease;
    border: 1px solid #f3e1cf;
    box-shadow: 0 5px 12px rgba(95, 57, 27, 0.05);
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 30px -12px rgba(100, 60, 20, 0.15);
    border-color: #ebcbaa;
}
.feature-icon {
    font-size: 2.4rem;
    color: #e28942;
    margin-bottom: 1rem;
}
.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    font-family: 'Quicksand', sans-serif;
    color: #4b2f1b;
}
.feature-card p {
    color: #7b624b;
    font-size: 0.95rem;
    line-height: 1.45;
}
.feature-placeholder {
    background: #faf2ea;
    border-radius: 1rem;
    padding: 0.5rem 0;
}

/* 画廊区域 */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}
.gallery-item {
    background: #faf2ea;
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0,0,0,0.05);
    transition: 0.2s;
    text-align: center;
    border: 1px solid #f0ddcb;
}
.image-placeholder {
    aspect-ratio: 16 / 9;
    background: linear-gradient(145deg, #eedbcb, #f9efE4);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: #c2936b;
    font-weight: 500;
}
.image-placeholder i {
    font-size: 3rem;
    opacity: 0.7;
}
.gallery-caption {
    padding: 1rem;
    font-size: 0.9rem;
    background: white;
    color: #a57354;
    font-weight: 500;
    border-top: 1px solid #f2e1d2;
}

/* 下载 & 链接区域 */
.links-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
    background: #fff6ed;
    border-radius: 2rem;
    padding: 2rem 2rem;
    border: 1px solid #f3e2cf;
}
.download-card {
    flex: 1;
    min-width: 200px;
    background: white;
    border-radius: 1.5rem;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 8px 14px rgba(0,0,0,0.02);
    transition: 0.2s;
    border: 1px solid #f2dfcd;
}
.download-card i {
    font-size: 2.4rem;
    color: #c9783a;
    margin-bottom: 1rem;
}
.download-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.download-card p {
    color: #b18766;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}
.link-placeholder {
    display: inline-block;
    background: #f0e1d3;
    padding: 0.5rem 1rem;
    border-radius: 60px;
    font-size: 0.85rem;
    font-weight: 500;
    color: #7c583c;
    text-decoration: none;
    pointer-events: none;
}

/* 额外信息占位 */
.extra-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1rem;
    background: #e9ddcf50;
    border-radius: 2rem;
    padding: 1.5rem 2rem;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #8b6243;
}

/* 页脚 */
footer {
    text-align: center;
    padding: 2rem 0 2.5rem;
    margin-top: 4rem;
    border-top: 1px solid #eedbcb;
    color: #ac8b6c;
    font-size: 0.85rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    .hero h1 {
        font-size: 2.2rem;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .navbar {
        gap: 1.2rem;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    .btn {
        width: 80%;
        justify-content: center;
    }
}

/* 占位提示标记 (小点缀) */
.info-note {
    background: #fdf7f0;
    border-radius: 1rem;
    padding: 0.4rem 0.8rem;
    display: inline-block;
    font-size: 0.75rem;
    color: #c28f62;
    margin-top: 0.8rem;
}