/* ===== Site 2 - 钉钉使用指南 样式 ===== */
:root {
    --primary: #00A870;
    --primary-dark: #008C5D;
    --accent: #FF8C00;
    --dark: #1B1B2F;
    --gray-50: #FAFBFC;
    --gray-100: #F0F2F5;
    --gray-200: #E4E7EB;
    --gray-300: #D1D5DB;
    --gray-600: #6B7280;
    --gray-700: #4B5563;
    --gray-800: #1F2937;
    --white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --radius: 10px;
    --radius-lg: 16px;
    --transition: all 0.25s ease;
    --font-serif: "Noto Serif SC", "Source Han Serif", "SimSun", serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--dark); line-height: 1.75; background: var(--gray-50); }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* Header */
.site2-header { background: var(--white); border-bottom: 1px solid var(--gray-200); position: sticky; top: 0; z-index: 1000; }
.site2-nav { max-width: 1100px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; }
.site2-logo { display: flex; align-items: center; gap: 10px; }
.site2-logo-img { width: 36px; height: 36px; background: var(--primary); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--white); font-size: 18px; font-weight: 700; }
.site2-logo-text { font-size: 18px; font-weight: 700; color: var(--dark); }
.site2-logo-text span { color: var(--primary); }
.site2-nav-links { display: flex; gap: 28px; align-items: center; }
.site2-nav-links a { font-size: 14px; color: var(--gray-700); padding: 6px 0; border-bottom: 2px solid transparent; transition: var(--transition); }
.site2-nav-links a:hover, .site2-nav-links a.active { color: var(--primary); border-bottom-color: var(--primary); }
.site2-nav-cta { background: var(--primary); color: var(--white) !important; padding: 8px 20px !important; border-radius: 20px !important; border-bottom: none !important; font-weight: 600; }
.site2-nav-cta:hover { background: var(--primary-dark) !important; color: var(--white) !important; }

/* Hero - Content style */
.site2-hero { max-width: 1100px; margin: 0 auto; padding: 60px 20px; text-align: center; }
.site2-hero-badge { display: inline-block; background: rgba(0,168,112,0.1); color: var(--primary); padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 600; margin-bottom: 16px; }
.site2-hero h1 { font-size: 42px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.site2-hero h1 .hl { color: var(--primary); }
.site2-hero p { font-size: 17px; color: var(--gray-600); max-width: 650px; margin: 0 auto 32px; }
.site2-hero-search { display: flex; max-width: 500px; margin: 0 auto 40px; gap: 0; }
.site2-hero-search input { flex: 1; padding: 14px 20px; border: 2px solid var(--gray-200); border-right: none; border-radius: 25px 0 0 25px; font-size: 15px; outline: none; }
.site2-hero-search input:focus { border-color: var(--primary); }
.site2-hero-search button { padding: 14px 24px; background: var(--primary); color: var(--white); border: 2px solid var(--primary); border-radius: 0 25px 25px 0; font-size: 15px; cursor: pointer; font-weight: 600; }
.site2-hero-stats { display: flex; justify-content: center; gap: 48px; }
.site2-stat { text-align: center; }
.site2-stat-num { font-size: 24px; font-weight: 800; color: var(--primary); display: block; }
.site2-stat-label { font-size: 13px; color: var(--gray-600); }

/* Article Cards */
.site2-section { max-width: 1100px; margin: 0 auto; padding: 40px 20px 60px; }
.site2-section-title { font-size: 26px; font-weight: 700; margin-bottom: 8px; }
.site2-section-title .hl { color: var(--primary); }
.site2-section-desc { font-size: 14px; color: var(--gray-600); margin-bottom: 32px; }
.site2-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.site2-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); }
.site2-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.site2-card-img { height: 160px; display: flex; align-items: center; justify-content: center; font-size: 48px; }
.site2-card-img.c1 { background: linear-gradient(135deg, #667eea, #764ba2); }
.site2-card-img.c2 { background: linear-gradient(135deg, #f093fb, #f5576c); }
.site2-card-img.c3 { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.site2-card-img.c4 { background: linear-gradient(135deg, #43e97b, #38f9d7); }
.site2-card-img.c5 { background: linear-gradient(135deg, #fa709a, #fee140); }
.site2-card-img.c6 { background: linear-gradient(135deg, #a18cd1, #fbc2eb); }
.site2-card-body { padding: 20px; }
.site2-card-tag { font-size: 11px; color: var(--primary); font-weight: 600; text-transform: uppercase; margin-bottom: 6px; }
.site2-card-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.site2-card-body p { font-size: 13px; color: var(--gray-600); line-height: 1.6; margin-bottom: 12px; }
.site2-card-meta { font-size: 12px; color: var(--gray-600); display: flex; gap: 12px; }

/* Content Page */
.site2-content { max-width: 800px; margin: 40px auto; padding: 0 20px; }
.site2-article { background: var(--white); padding: 40px; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.site2-article h2 { font-size: 24px; margin: 32px 0 16px; color: var(--dark); }
.site2-article h3 { font-size: 18px; margin: 24px 0 12px; color: var(--gray-800); }
.site2-article p { font-size: 15px; color: var(--gray-700); line-height: 1.85; margin-bottom: 16px; }
.site2-article ul { list-style: disc; padding-left: 24px; margin-bottom: 16px; }
.site2-article li { font-size: 14px; color: var(--gray-700); margin-bottom: 8px; }
.site2-toc { background: var(--gray-50); padding: 20px; border-radius: var(--radius); margin-bottom: 32px; border-left: 4px solid var(--primary); }
.site2-toc h4 { font-size: 15px; margin-bottom: 10px; }
.site2-toc ul { list-style: none; padding-left: 0; }
.site2-toc li { margin-bottom: 6px; }
.site2-toc a { color: var(--primary); font-size: 14px; }

/* FAQ Page */
.site2-faq { max-width: 800px; margin: 40px auto; padding: 0 20px; }
.site2-faq-item { background: var(--white); border-radius: var(--radius); margin-bottom: 12px; box-shadow: var(--shadow-sm); overflow: hidden; }
.site2-faq-q { padding: 18px 24px; font-size: 16px; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.site2-faq-q:hover { color: var(--primary); }
.site2-faq-a { padding: 0 24px 18px; font-size: 14px; color: var(--gray-700); line-height: 1.7; }

/* Download Section */
.site2-dl-section { max-width: 1000px; margin: 40px auto; padding: 0 20px; }
.site2-dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.site2-dl-card { background: var(--white); border-radius: var(--radius-lg); padding: 32px 24px; text-align: center; box-shadow: var(--shadow-sm); transition: var(--transition); }
.site2-dl-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.site2-dl-card.win { border-top: 4px solid #0089FF; }
.site2-dl-card.mac { border-top: 4px solid #333; }
.site2-dl-card.mob { border-top: 4px solid var(--accent); }
.site2-dl-icon { font-size: 44px; margin-bottom: 12px; }
.site2-dl-card h3 { font-size: 19px; margin-bottom: 6px; }
.site2-dl-card .ver { font-size: 13px; color: var(--gray-600); margin-bottom: 16px; }
.site2-dl-btn { display: inline-block; padding: 12px 28px; border-radius: 25px; font-size: 14px; font-weight: 600; transition: var(--transition); }
.site2-dl-btn.primary { background: var(--primary); color: var(--white); }
.site2-dl-btn.primary:hover { background: var(--primary-dark); }

/* Footer */
.site2-footer { background: var(--dark); color: rgba(255,255,255,0.65); padding: 48px 20px 24px; margin-top: 60px; }
.site2-footer-grid { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.site2-footer-grid h4 { color: var(--white); font-size: 15px; margin-bottom: 14px; }
.site2-footer-grid p, .site2-footer-grid li { font-size: 13px; margin-bottom: 6px; }
.site2-footer-grid a { color: rgba(255,255,255,0.6); font-size: 13px; }
.site2-footer-grid a:hover { color: var(--primary); }
.site2-footer-bottom { max-width: 1100px; margin: 0 auto; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.08); text-align: center; font-size: 12px; }

/* Related Articles */
.site2-related { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 32px; }
.site2-related-card { background: var(--gray-50); padding: 16px; border-radius: var(--radius); transition: var(--transition); }
.site2-related-card:hover { background: var(--gray-100); }
.site2-related-card h4 { font-size: 14px; margin-bottom: 4px; color: var(--primary); }
.site2-related-card p { font-size: 12px; color: var(--gray-600); margin: 0; }

/* Breadcrumb */
.site2-breadcrumb { max-width: 1100px; margin: 16px auto 0; padding: 0 20px; font-size: 13px; color: var(--gray-600); }
.site2-breadcrumb a { color: var(--primary); }

/* Page Header */
.site2-pageheader { background: linear-gradient(135deg, var(--primary) 0%, #38f9d7 100%); padding: 48px 20px; text-align: center; color: var(--white); }
.site2-pageheader h1 { font-size: 34px; font-weight: 800; margin-bottom: 8px; }
.site2-pageheader p { font-size: 15px; opacity: 0.9; }

@media (max-width: 768px) {
    .site2-grid { grid-template-columns: 1fr; }
    .site2-dl-grid { grid-template-columns: 1fr; }
    .site2-footer-grid { grid-template-columns: 1fr; }
    .site2-hero h1 { font-size: 28px; }
    .site2-hero-stats { gap: 24px; flex-wrap: wrap; }
    .site2-article { padding: 24px; }
    .site2-related { grid-template-columns: 1fr; }
}