/* 全局基础样式 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;

    /* 清新渐变 + 玻璃拟态背景 */
    background: linear-gradient(
        135deg,
        rgba(222, 245, 255, 0.9) 0%,
        rgba(236, 248, 255, 0.9) 25%,
        rgba(245, 255, 250, 0.9) 50%,
        rgba(255, 255, 255, 0.9) 100%
    );
    background-attachment: fixed;
    backdrop-filter: blur(20px);

    color: #222;
    line-height: 1.6;
}

.page-wrapper {
    max-width: 960px;
    margin: 0 auto;
    padding: 32px 16px;

    /* 整体玻璃拟态容器 */
    background: rgba(255, 255, 255, 0.35);
    border-radius: 20px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow:
        0 25px 60px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(255, 255, 255, 0.4);
}

/* 顶部标题 */
.site-header {
    text-align: center;
    margin-bottom: 32px;
}

/* h1 + 图标布局 */
.title-with-icon {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 2.4rem;
    color: #2b2f55;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* 图标样式 */
.title-icon img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    border-radius: 8px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.title-icon:hover img {
    transform: scale(1.1);
    opacity: 0.85;
}

.subtitle {
    margin-top: 6px;
    font-size: 0.95rem;
    color: #6b6f8f;
}

/* 内容布局 */
.content {
    display: grid;
    gap: 20px;
}

/* 卡片玻璃拟态 */
.card {
    background: rgba(255, 255, 255, 0.45);
    border-radius: 16px;
    padding: 20px 22px;

    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);

    border: 1px solid rgba(255, 255, 255, 0.45);
    box-shadow:
        0 18px 45px rgba(15, 23, 42, 0.08),
        0 0 0 1px rgba(148, 163, 184, 0.18);
}

.card h2 {
    margin-bottom: 10px;
    font-size: 1.2rem;
}

/* 列表 */
.help-list {
    margin-top: 10px;
    padding-left: 18px;
}

.help-list li {
    margin-bottom: 6px;
}

.help-list a {
    color: #4f46e5;
    text-decoration: none;
}

.help-list a:hover {
    text-decoration: underline;
}

/* 隐藏模块 */
.hidden {
    display: none;
}

/* 底部 */
.site-footer {
    text-align: center;
    margin-top: 40px;
    color: #9ca3af;
    font-size: 0.85rem;
}

/* 深色模式 */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(
            135deg,
            rgba(20, 30, 50, 0.9) 0%,
            rgba(25, 35, 55, 0.9) 50%,
            rgba(30, 40, 60, 0.9) 100%
        );
    }

    .page-wrapper {
        background: rgba(20, 25, 40, 0.45);
        border-color: rgba(255, 255, 255, 0.2);
    }

    .card {
        background: rgba(30, 40, 60, 0.45);
        border-color: rgba(255, 255, 255, 0.2);
    }

    .title-with-icon {
        color: #e5e7eb;
    }

    .subtitle {
        color: #9ca3c7;
    }

    .site-footer {
        color: #6b7280;
    }
}