/* academy.huaquanpower.net — Purple Training Theme */
:root {
    --primary: #6B21A8; --primary-light: #7C3AED; --primary-dark: #581C87;
    --accent: #A855F7; --accent-light: #C084FC;
    --bg: #FAF5FF; --bg-card: #FFFFFF; --bg-dark: #3B0764;
    --text: #1E1B4B; --text-light: #6B7280; --text-on-dark: #F3E8FF;
    --border: #E9D5FF; --success: #059669; --warning: #D97706; --shadow: 0 4px 24px rgba(107,33,168,0.08);
    --radius: 12px; --max-width: 960px; --font: system-ui, -apple-system, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

.site-header { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: #fff; padding: 16px 0; position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 12px rgba(0,0,0,0.15); }
.site-header .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.logo { font-size: 1.3rem; font-weight: 700; color: #fff; text-decoration: none; }
.site-header nav ul { display: flex; list-style: none; gap: 8px; flex-wrap: wrap; }
.site-header nav a { color: var(--text-on-dark); text-decoration: none; padding: 6px 12px; border-radius: 6px; font-size: 0.85rem; transition: background 0.2s; }
.site-header nav a:hover, .site-header nav a.active { background: rgba(255,255,255,0.15); }

.breadcrumb { padding: 12px 0; font-size: 0.85rem; color: var(--text-light); }
.breadcrumb ol { list-style: none; display: flex; gap: 4px; }
.breadcrumb li:not(:last-child)::after { content: '/'; margin-left: 4px; color: var(--text-light); }
.breadcrumb a { color: var(--primary); text-decoration: none; }

main { padding: 24px 0 48px; }
h1 { font-size: 2rem; color: var(--primary-dark); margin-bottom: 12px; line-height: 1.3; }
h2 { font-size: 1.4rem; color: var(--primary); margin: 32px 0 12px; padding-bottom: 8px; border-bottom: 2px solid var(--border); }
h3 { font-size: 1.15rem; color: var(--primary-dark); margin: 20px 0 8px; }
p { margin-bottom: 12px; }
ul, ol { margin: 8px 0 16px 24px; }
li { margin-bottom: 4px; }
a { color: var(--primary); }

table { width: 100%; border-collapse: collapse; margin: 16px 0 24px; background: var(--bg-card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
th { background: var(--primary); color: #fff; padding: 12px 16px; text-align: left; font-size: 0.9rem; }
td { padding: 10px 16px; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
tr:last-child td { border-bottom: none; }

.quick-answer { background: linear-gradient(135deg, var(--primary-light), var(--accent)); color: #fff; padding: 24px; border-radius: var(--radius); margin-bottom: 24px; }
.quick-answer h2 { color: #fff; border: none; margin-top: 0; }

.key-takeaways { background: var(--bg-card); border-left: 4px solid var(--primary); padding: 20px 24px; margin: 24px 0; border-radius: 0 var(--radius) var(--radius) 0; box-shadow: var(--shadow); }
.key-takeaways h2 { margin-top: 0; }

.summary-box { background: linear-gradient(135deg, var(--bg-dark), var(--primary-dark)); color: #fff; padding: 24px; border-radius: var(--radius); margin: 24px 0; }
.summary-box h2 { color: #fff; border-color: rgba(255,255,255,0.3); }

.cta-box { text-align: center; padding: 32px; margin: 32px 0; background: linear-gradient(135deg, var(--accent-light), var(--primary-light)); border-radius: var(--radius); color: #fff; }
.cta-box a { display: inline-block; margin-top: 12px; padding: 12px 32px; background: #fff; color: var(--primary-dark); border-radius: 8px; text-decoration: none; font-weight: 600; transition: transform 0.2s; }
.cta-box a:hover { transform: translateY(-2px); }

/* Index page */
.hero { text-align: center; padding: 48px 0 32px; }
.hero h1 { font-size: 2.4rem; }
.hero p { font-size: 1.1rem; color: var(--text-light); max-width: 720px; margin: 0 auto 24px; }
.hero-stats { display: flex; justify-content: center; gap: 40px; margin: 24px 0; }
.stat { text-align: center; }
.stat .num { display: block; font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat .label { font-size: 0.85rem; color: var(--text-light); }

.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; margin: 32px 0; }
.course-card { background: var(--bg-card); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); transition: transform 0.2s; border-top: 4px solid var(--primary); }
.course-card:hover { transform: translateY(-4px); }
.course-card h3 { margin-top: 0; }
.course-card .duration { display: inline-block; background: var(--bg); color: var(--primary); padding: 2px 10px; border-radius: 12px; font-size: 0.8rem; font-weight: 600; margin-bottom: 8px; }

.site-footer { background: var(--bg-dark); color: var(--text-on-dark); padding: 32px 0; margin-top: 48px; text-align: center; font-size: 0.9rem; }
.site-footer a { color: var(--accent-light); }

@media (max-width: 768px) {
    .container { padding: 0 16px; }
    h1 { font-size: 1.5rem; }
    .hero-stats { flex-direction: column; gap: 16px; }
    .course-grid { grid-template-columns: 1fr; }
    table { font-size: 0.8rem; }
    th, td { padding: 8px; }
}