:root {
    --site-bg: #fcfbf7;
    --site-panel: #ffffff;
    --site-line: #eadfbf;
    --site-line-soft: #efe6ce;
    --site-text: #1f2937;
    --site-muted: #667085;
    --site-accent: #8a6400;
    --site-accent-soft: #fff2cb;
    --site-shadow: 0 18px 36px rgba(15, 23, 42, 0.06);
    --site-radius-lg: 28px;
    --site-radius-md: 20px;
    --site-radius-sm: 16px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, "Microsoft YaHei", sans-serif;
    color: var(--site-text);
    background:
        radial-gradient(circle at top left, rgba(246, 204, 72, 0.18), transparent 30%),
        radial-gradient(circle at top right, rgba(138, 100, 0, 0.08), transparent 22%),
        var(--site-bg);
    line-height: 1.75;
}

a {
    color: inherit;
    text-decoration: none;
}

.site-shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 24px 0 56px;
}

.site-topbar-desktop {
    display: none;
}

.site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding-top: 34px;
    color: #737b8f;
    font-size: 12px;
    line-height: 1.7;
    text-align: center;
}

.site-footer-brand {
    font-weight: 700;
    color: #31394b;
}

.site-footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.help-shell {
    display: grid;
    gap: 22px;
}

.help-top-links {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 14px;
    color: var(--site-accent);
}

.help-top-links a:hover,
.help-blog-title a:hover,
.help-related a:hover {
    text-decoration: underline;
}

.help-hero-card,
.help-panel,
.help-blog-item,
.help-faq-item,
.help-article-header,
.help-article-content {
    background: var(--site-panel);
    border: 1px solid var(--site-line);
    box-shadow: var(--site-shadow);
}

.help-hero-card {
    border-radius: var(--site-radius-lg);
    padding: 34px 32px;
    background: linear-gradient(180deg, #fff8e6 0%, #ffffff 100%);
}

.help-hero-kicker {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--site-accent-soft);
    color: var(--site-accent);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    margin-bottom: 16px;
}

.help-hero-card h1 {
    margin: 0;
    font-size: 38px;
    line-height: 1.18;
    letter-spacing: -0.03em;
}

.help-hero-card p {
    margin: 14px 0 0;
    color: #5f6b7c;
    font-size: 15px;
}

.help-hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}

.help-hero-tags span {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 0 14px;
    border-radius: 999px;
    background: #ffffff;
    color: #5f6878;
    font-size: 13px;
    border: 1px solid var(--site-line-soft);
}

.help-main-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 24px;
}

.help-section-card {
    background: var(--site-panel);
    border: 1px solid var(--site-line);
    border-radius: var(--site-radius-lg);
    padding: 30px 28px;
    box-shadow: var(--site-shadow);
}

.help-section-head {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 18px;
}

.help-section-label {
    color: var(--site-accent);
    font-size: 13px;
    font-weight: 700;
}

.help-section-title,
.help-panel h2 {
    margin: 0 0 12px;
    font-size: 22px;
    line-height: 1.35;
    color: #253548;
}

.help-blog-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.help-blog-item {
    border-radius: var(--site-radius-md);
    padding: 22px 20px;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.help-blog-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 22px 42px rgba(15, 23, 42, 0.08);
}

.help-blog-index {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--site-accent-soft);
    color: var(--site-accent);
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 14px;
}

.help-blog-title {
    margin: 0 0 10px;
    font-size: 19px;
    line-height: 1.45;
    color: #22364d;
}

.help-blog-desc {
    margin: 0 0 14px;
    font-size: 14px;
    color: var(--site-muted);
}

.help-blog-meta {
    font-size: 12px;
    color: #7a8393;
}

.help-sidebar {
    display: grid;
    gap: 18px;
    align-content: start;
}

.help-panel {
    border-radius: var(--site-radius-md);
    padding: 24px 22px;
}

.help-panel p {
    color: var(--site-muted);
}

.help-faq-list {
    display: grid;
    gap: 12px;
}

.help-faq-item {
    border-radius: var(--site-radius-sm);
    padding: 18px 18px 16px;
}

.help-faq-item strong {
    display: block;
    margin-bottom: 8px;
    font-size: 15px;
    color: #2a2f3a;
    line-height: 1.55;
}

.help-faq-answer {
    font-size: 14px;
    margin: 0;
    color: var(--site-muted);
}

.help-article-page {
    width: 100%;
    margin: 0;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    justify-self: stretch;
    align-self: stretch;
}

.help-article-header,
.help-article-content {
    width: 100%;
    max-width: none;
    border-radius: var(--site-radius-md);
    padding: 26px 24px;
}

.help-article-content {
    padding: 28px 24px;
}

.help-article-page h1 {
    margin: 0 0 12px;
    font-size: 30px;
    line-height: 1.28;
    color: #1f2a37;
}

.help-article-page h2 {
    margin: 26px 0 12px;
    font-size: 22px;
    line-height: 1.4;
    color: #244c72;
}

.help-article-page p {
    margin: 0 0 14px;
}

.help-article-meta {
    color: #6b7280;
    font-size: 14px;
}

.help-article-content ul {
    margin: 0 0 14px;
    padding-left: 22px;
}

.help-highlight {
    background: #fff8df;
    border: 1px solid #f0dfaa;
    border-radius: 16px;
    padding: 16px 18px;
    margin: 18px 0;
}

.help-callout {
    border-left: 4px solid #4299e1;
    background: #f8fbff;
    padding: 14px 16px;
    margin: 18px 0;
    border-radius: 10px;
}

.help-related {
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid #eee3c6;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 14px;
    color: var(--site-accent);
}

.help-article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 14px;
}

.help-article-content th,
.help-article-content td {
    border: 1px solid #ddd8c9;
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
}

.help-article-content th {
    background: #f6f4ed;
    color: #374151;
}

.help-article-content pre {
    background: #f8fafc;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 14px;
    overflow-x: auto;
}

@media (min-width: 961px) {
    .site-topbar-desktop {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 18px;
        padding: 14px 22px;
        background: rgba(255, 255, 255, 0.96);
        border: 1px solid #efe7d1;
        border-radius: 18px;
        box-shadow: 0 16px 30px rgba(15, 23, 42, 0.05);
    }

    .site-topbar-brand {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 17px;
        font-weight: 800;
        color: #1c2332;
    }

    .site-topbar-brand img {
        width: 42px;
        height: 42px;
        border-radius: 12px;
        object-fit: cover;
    }

    .site-topbar-download {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 40px;
        padding: 0 18px;
        border-radius: 999px;
        background: #fff2c4;
        color: #b78508;
        font-size: 14px;
        font-weight: 700;
        white-space: nowrap;
    }
}

@media (max-width: 980px) {
    .help-main-grid,
    .help-blog-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 960px) {
    .site-shell {
        width: min(100%, calc(100% - 24px));
        padding-top: 20px;
    }

    .site-footer {
        flex-direction: column;
        align-items: center;
    }

    [data-role="windows-download-button"] {
        display: none;
    }
}

@media (max-width: 640px) {
    .site-shell {
        width: calc(100% - 20px);
        padding-bottom: 32px;
    }

    .help-hero-card,
    .help-section-card,
    .help-panel,
    .help-blog-item,
    .help-faq-item,
    .help-article-header,
    .help-article-content {
        border-radius: 18px;
    }

    .help-top-links {
        gap: 10px;
        font-size: 13px;
    }

    .help-hero-card,
    .help-section-card,
    .help-panel,
    .help-article-header,
    .help-article-content {
        padding: 24px 20px;
    }

    .help-hero-card h1 {
        font-size: 26px;
    }

    .help-section-title,
    .help-panel h2,
    .help-article-page h2 {
        font-size: 20px;
    }

    .help-blog-title,
    .help-article-page h1 {
        font-size: 17px;
    }

    .site-footer {
        padding-top: 18px;
        gap: 12px;
    }
}