/* ============================================================
   小蝌蚪跨境ERP · 教程子页公共样式
   - .tut-page  : 子页内容容器（居中、限宽）
   - .tut-guide : 原弹窗 .noon-guide-dark 暗黑风格（教程1/2/3/9）
   - .tut-related : 相关教程卡片区
   所有规则均作用域在 .tut-page / .tut-guide 下，避免污染全局。
   ============================================================ */

/* 内容容器 */
.tut-page {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.5rem 1rem 2.5rem;
}
.tut-page .tut-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #E33535;
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
    transition: opacity .2s;
}
.tut-page .tut-back:hover { opacity: .8; }
.tut-page .tut-title {
    font-size: 1.9rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
}
.tut-page .tut-meta {
    color: #9CA3AF;
    font-size: 0.82rem;
    margin-top: 0.5rem;
}
.tut-page .tut-summary {
    color: #cbd5e1;
    font-size: 1rem;
    line-height: 1.7;
    margin-top: 1rem;
    background: rgba(227, 53, 53, 0.08);
    border-left: 3px solid #E33535;
    padding: 0.8rem 1rem;
    border-radius: 0.75rem;
}
.tut-page .tut-divider {
    border: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.12);
    margin: 1.5rem 0;
}

/* ============ .noon-guide-dark 暗黑风格（教程1/2/3/9） ============ */
.tut-guide {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #e5e9f0;
    max-width: 100%;
}
.tut-guide .space-y-3 > * + * { margin-top: 0.85rem; }
.tut-guide .text-primary {
    color: #E33535;
    font-weight: 700;
    font-size: 1.1rem;
}
.tut-guide .step-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 1.5rem 0 0.8rem 0;
    color: #E33535;
    border-left: 4px solid #E33535;
    padding-left: 14px;
}
.tut-guide p,
.tut-guide .desc-text,
.tut-guide li,
.tut-guide .content-card,
.tut-guide .warning-card {
    font-size: 1.3rem;
    line-height: 1.6;
    color: #e0e6f0;
}
.tut-guide a { color: #ff6b6b; text-decoration: none; }
.tut-guide a:hover { text-decoration: underline; }
.tut-guide .img-single { margin: 1.2rem 0; text-align: center; }
.tut-guide .img-single img {
    max-width: 90%;
    max-height: 1600px;
    width: auto;
    object-fit: contain;
    border-radius: 20px;
    background: transparent;
    display: inline-block;
}
.tut-guide .content-card {
    background: rgba(255, 255, 255, 0.08);
    border-left: 4px solid #f5a623;
    padding: 14px 18px;
    border-radius: 20px;
    margin: 20px 0;
    font-size: 0.95rem;
    color: #f0f0f0;
}
.tut-guide .warning-card {
    background: rgba(227, 53, 53, 0.12);
    border-left: 4px solid #E33535;
    padding: 14px 18px;
    border-radius: 20px;
    margin: 20px 0;
    font-size: 0.95rem;
    color: #ffcfcf;
}
.tut-guide hr {
    margin: 24px 0;
    border: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.15);
}
.tut-guide strong { color: #ffffff; font-weight: 600; }
.tut-guide .text-small { font-size: 0.85rem; color: #b0bedb; }
.tut-guide .status-badge { display: inline-block; font-weight: 600; margin-right: 8px; }
.tut-guide .img-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tut-guide .pro-tip {
    background: rgba(56, 189, 248, 0.12);
    border-left: 4px solid #38bdf8;
    padding: 14px 18px;
    border-radius: 20px;
    margin: 20px 0;
    font-size: 0.95rem;
}

/* 教程8 配图（.img-wrapper / .img-caption 原定义在 2.html 内联样式，这里统一收敛） */
.tut-page .img-wrapper {
    margin: 1rem 0;
    text-align: center;
    background: #0F1625;
    border-radius: 16px;
    padding: 0.5rem;
}
.tut-page .img-wrapper img {
    max-width: 100%;
    border-radius: 12px;
    border: 1px solid #1E2A3A;
}
.tut-page .img-caption {
    font-size: 0.75rem;
    color: #9CA3AF;
    margin-top: 0.4rem;
    text-align: center;
}

/* ============ 相关教程卡片 ============ */
.tut-related { margin-top: 2.5rem; }
.tut-related h2 { color: #fff; font-size: 1.25rem; font-weight: 700; margin-bottom: 1rem; }
.tut-related .rel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
}
.tut-related .rel-card {
    display: block;
    background: rgba(18, 26, 44, 0.95);
    border: 1px solid rgba(30, 42, 58, 0.6);
    border-radius: 1rem;
    padding: 1rem;
    transition: all .25s ease;
}
.tut-related .rel-card:hover {
    transform: translateY(-4px);
    border-color: rgba(227, 53, 53, 0.55);
}
.tut-related .rel-card .rel-icon {
    width: 44px; height: 44px; border-radius: 0.75rem;
    background: rgba(227, 53, 53, 0.15);
    display: flex; align-items: center; justify-content: center;
    color: #E33535; font-size: 1.1rem; margin-bottom: 0.6rem;
}
.tut-related .rel-card h3 { color: #fff; font-size: 0.95rem; font-weight: 700; }
.tut-related .rel-card p { color: #9CA3AF; font-size: 0.75rem; margin-top: 0.35rem; line-height: 1.5; }

@media (max-width: 640px) {
    .tut-guide p, .tut-guide .desc-text, .tut-guide li,
    .tut-guide .content-card, .tut-guide .warning-card { font-size: 1.05rem; }
    .tut-guide .step-title { font-size: 1.3rem; }
}

/* ============ 核心功能 / 内容页通用区块 ============ */
.tut-page .feat-hero { display: flex; flex-direction: column; align-items: flex-start; gap: 0.4rem; }
.tut-page .feat-icon {
    width: 64px; height: 64px; border-radius: 1rem;
    background: rgba(227, 53, 53, 0.15);
    display: flex; align-items: center; justify-content: center;
    color: #E33535; font-size: 1.8rem; margin-bottom: 0.5rem;
}
.tut-page .feat-h2 { color: #fff; font-size: 1.35rem; font-weight: 700; margin: 1.75rem 0 0.75rem; }
.tut-page .feat-points { display: grid; gap: 0.75rem; }
.tut-page .feat-points .fp {
    display: flex; gap: 0.6rem; align-items: flex-start;
    background: rgba(255, 255, 255, 0.04);
    border-left: 3px solid #E33535;
    padding: 0.8rem 1rem; border-radius: 0.75rem;
    color: #cbd5e1; font-size: 0.95rem; line-height: 1.6;
}
.tut-page .feat-points .fp i { color: #E33535; margin-top: 0.2rem; }
.tut-page .feat-prose { color: #cbd5e1; font-size: 1rem; line-height: 1.8; }
.tut-page .feat-prose p { margin-bottom: 0.8rem; }

/* 内容页：方案 / 案例 / 价格 / 对比 卡片 */
.tut-page .sol-item {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; align-items: center;
    padding: 1.25rem 0; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.tut-page .sol-item:nth-child(even) .sol-media { order: 2; }
.tut-page .sol-media img { width: 100%; border-radius: 1rem; border: 1px solid #1E2A3A; }
.tut-page .sol-text h3 { color: #fff; font-size: 1.25rem; font-weight: 700; margin-bottom: 0.5rem; }
.tut-page .sol-text p { color: #9CA3AF; font-size: 0.95rem; line-height: 1.7; }
.tut-page .sol-text ul { margin-top: 0.6rem; display: grid; gap: 0.4rem; color: #cbd5e1; font-size: 0.9rem; }
.tut-page .case-card {
    background: rgba(18,26,44,0.95); border: 1px solid rgba(30,42,58,0.6);
    border-radius: 1rem; padding: 1.25rem;
}
.tut-page .case-card .stars { color: #f5c518; font-size: 0.85rem; }
.tut-page .case-card p { color: #cbd5e1; font-style: italic; font-size: 0.95rem; line-height: 1.7; margin: 0.5rem 0; }
.tut-page .case-card .who { color: #fff; font-weight: 600; font-size: 0.9rem; }
.tut-page .case-card .role { color: #9CA3AF; font-size: 0.75rem; }
.tut-page .price-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
.tut-page .price-card {
    background: rgba(18,26,44,0.95); border: 1px solid rgba(30,42,58,0.6);
    border-radius: 1rem; padding: 1.25rem;
}
.tut-page .price-card.hot { border: 2px solid rgba(227,53,53,0.5); }
.tut-page .price-card h3 { color: #fff; font-size: 1.1rem; font-weight: 700; }
.tut-page .price-card .price { color: #E33535; font-size: 1.8rem; font-weight: 800; margin: 0.5rem 0; }
.tut-page .price-card .price small { color: #9CA3AF; font-size: 0.8rem; font-weight: 400; }
.tut-page .price-card ul { color: #cbd5e1; font-size: 0.85rem; display: grid; gap: 0.4rem; margin: 0.5rem 0 1rem; }
.tut-page .cmp-table { width: 100%; border-collapse: collapse; overflow: hidden; border-radius: 1rem; }
.tut-page .cmp-table th, .tut-page .cmp-table td { border: 1px solid #1E2A3A; padding: 0.8rem 1rem; text-align: left; vertical-align: top; font-size: 0.9rem; }
.tut-page .cmp-table tr:first-child th { background: rgba(227,53,53,0.18); color: #fff; font-weight: 700; }
.tut-page .cmp-table .ct-dim { color: #fff; font-weight: 600; background: rgba(255,255,255,0.03); white-space: nowrap; }
.tut-page .cmp-table .us { background: rgba(227,53,53,0.08); color: #ffd9d9; }
.tut-page .cmp-table .us .ck { color: #34d399; font-weight: 800; margin-right: 0.35rem; }
.tut-page .cmp-table .weak { color: #9CA3AF; }

/* 内容页 / 功能页 相关卡片（独立于 .tut-related） */
.tut-page .rel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
    margin-top: 0.5rem;
}
.tut-page .rel-card {
    display: block;
    background: rgba(18, 26, 44, 0.95);
    border: 1px solid rgba(30, 42, 58, 0.6);
    border-radius: 1rem;
    padding: 1rem;
    transition: all .25s ease;
}
.tut-page .rel-card:hover { transform: translateY(-4px); border-color: rgba(227, 53, 53, 0.55); }
.tut-page .rel-card .rel-icon {
    width: 44px; height: 44px; border-radius: 0.75rem;
    background: rgba(227, 53, 53, 0.15);
    display: flex; align-items: center; justify-content: center;
    color: #E33535; font-size: 1.1rem; margin-bottom: 0.6rem;
}
.tut-page .rel-card h3 { color: #fff; font-size: 0.95rem; font-weight: 700; }
.tut-page .rel-card p { color: #9CA3AF; font-size: 0.75rem; margin-top: 0.35rem; line-height: 1.5; }

@media (max-width: 640px) {
    .tut-page .sol-item { grid-template-columns: 1fr; }
    .tut-page .sol-item:nth-child(even) .sol-media { order: 0; }
}