/* ============================================================
           syjc.aspx — 使用教程页样式
           设计语言与 home.css 统一，继承 :root 变量体系
           ============================================================ */

/* ---------- 页面 Hero 标题区 ---------- */
.page-hero {
    background: linear-gradient(135deg, var(--brand) 0%, #2a56b5 100%);
    padding: 48px 0 44px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

    .page-hero::after {
        content: '';
        position: absolute;
        right: -80px;
        top: -80px;
        width: 240px;
        height: 240px;
        border-radius: 50%;
        background: rgba(255,255,255,0.05);
    }

    .page-hero::before {
        content: '';
        position: absolute;
        left: -60px;
        bottom: -70px;
        width: 180px;
        height: 180px;
        border-radius: 50%;
        background: rgba(255,255,255,0.04);
    }

    .page-hero .container {
        position: relative;
        z-index: 1;
    }

    .page-hero h1 {
        font-size: 32px;
        color: #fff;
        font-weight: 700;
        margin-bottom: 12px;
        letter-spacing: 2px;
        line-height: 1.3;
    }

    .page-hero p {
        font-size: 15px;
        color: rgba(255,255,255,0.85);
        max-width: 640px;
        margin: 0 auto;
        line-height: 1.8;
        font-weight: 350;
    }

/* ---------- 教程内容容器 ---------- */
.tutorial-content {
    padding: 40px 0 10px;
}

    .tutorial-content .container {
        max-width: 960px;
        margin: 0 auto;
        width: 100%;
        padding: 0 48px;
    }

/* ---------- 教程介绍 ---------- */
.tutorial-intro {
    font-size: 15px;
    color: var(--text-2);
    line-height: 1.9;
    margin-bottom: 44px;
    padding: 20px 28px;
    background: var(--brand-50);
    border-radius: 10px;
    border-left: 4px solid var(--brand);
}

/* ---------- 教程分类区域 ---------- */
.tutorial-section {
    margin-bottom: 48px;
}

    .tutorial-section:last-child {
        margin-bottom: 20px;
    }

    .tutorial-section .section-header {
        margin-bottom: 24px;
    }

/* ---------- 教程内容卡片 ---------- */
.tutorial-card {
    background: var(--surface);
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    padding: 28px 32px;
}

/* ---------- 子标题 ---------- */
.tutorial-subtitle {
    font-size: 16px;
    font-weight: 650;
    color: var(--text-1);
    margin: 28px 0 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--divider);
    line-height: 1.5;
}

    .tutorial-subtitle:first-child {
        margin-top: 0;
    }

/* ---------- 正文段落 ---------- */
.tutorial-card p {
    font-size: 14px;
    color: var(--text-3);
    line-height: 1.85;
    margin-bottom: 12px;
}

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

/* ---------- 提示框 ---------- */
.tutorial-tip {
    margin: 16px 0;
    padding: 14px 18px;
    background: #fffbe6;
    border: 1px solid #f5e6a3;
    border-radius: 8px;
    font-size: 14px;
    color: #8a7440;
    line-height: 1.7;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

    .tutorial-tip::before {
        content: '💡';
        flex-shrink: 0;
        font-size: 16px;
        line-height: 1.7;
    }

/* ---------- 列表 ---------- */
.tutorial-card ul {
    margin: 8px 0 12px 20px;
    padding: 0;
    list-style: none;
}

.tutorial-card li {
    font-size: 14px;
    color: var(--text-3);
    line-height: 1.85;
    margin-bottom: 6px;
    padding-left: 18px;
    position: relative;
}

    .tutorial-card li::before {
        content: '';
        position: absolute;
        left: 0;
        top: 11px;
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--brand);
        opacity: 0.5;
    }

/* ---------- 强调文字 ---------- */
.tutorial-card strong {
    color: var(--text-2);
    font-weight: 600;
}

/* ---------- 联系方式 ---------- */
.contact-info {
    margin-top: 12px;
    padding: 16px 20px;
    background: var(--brand-50);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-3);
    line-height: 2;
}

    .contact-info strong {
        color: var(--text-2);
        font-weight: 600;
    }

/* ---------- 分隔间距 ---------- */
.dv-space {
    height: 20px;
    width: 100%;
}

/* ============================================================
           响应式
           ============================================================ */

/* Tablet: <= 1024px */
@media (max-width: 1024px) {
    .tutorial-content .container {
        padding: 0 24px;
    }

    .page-hero {
        padding: 36px 0 32px;
    }

        .page-hero h1 {
            font-size: 26px;
            letter-spacing: 1px;
        }

        .page-hero p {
            font-size: 14px;
        }

    .tutorial-card {
        padding: 22px 24px;
    }
}

/* Mobile: <= 768px */
@media (max-width: 768px) {
    .tutorial-content .container {
        padding: 0 16px;
    }

    .page-hero {
        padding: 28px 0 24px;
    }

        .page-hero h1 {
            font-size: 22px;
        }

        .page-hero p {
            font-size: 13px;
        }

    .tutorial-content {
        padding: 28px 0 10px;
    }

    .tutorial-section {
        margin-bottom: 36px;
    }

    .tutorial-card {
        padding: 18px 20px;
    }

    .tutorial-intro {
        padding: 16px 20px;
        font-size: 14px;
        margin-bottom: 34px;
    }

    .tutorial-subtitle {
        font-size: 15px;
    }

    .tutorial-card p, .tutorial-card li {
        font-size: 13px;
    }

    .tutorial-tip {
        font-size: 13px;
        padding: 12px 14px;
    }
}

/* Small mobile: <= 480px */
@media (max-width: 480px) {
    .page-hero h1 {
        font-size: 20px;
    }

    .tutorial-card {
        padding: 14px 16px;
    }

    .tutorial-intro {
        padding: 14px 16px;
        font-size: 13px;
    }

    .tutorial-card p, .tutorial-card li {
        font-size: 13px;
    }
}