/* 老兵电商 · 日光沙盘主题（学院页） */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #C45C26;
    --primary-light: #D4784A;
    --primary-dark: #9E4518;
    --brand: #3D5A40;
    --brand-light: #5A7A5C;
    --bg-dark: #F5F0E6;
    --bg-card: #FFFCF7;
    --bg-card-hover: #F0EBE0;
    --text-primary: #1C1C1A;
    --text-secondary: #5C6570;
    --accent-blue: #3D5A40;
    --accent-cyan: #4A6B4E;
    --border: rgba(28, 28, 26, 0.1);
    --shadow: 0 8px 28px rgba(28, 28, 26, 0.08);
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-dark);
    background-image:
        radial-gradient(ellipse at top, rgba(61, 90, 64, 0.07), transparent 55%),
        repeating-linear-gradient(135deg, transparent, transparent 14px, rgba(28, 28, 26, 0.02) 14px, rgba(28, 28, 26, 0.02) 15px);
    color: var(--text-primary);
    line-height: 1.85;
    overflow-x: hidden;
}

a { color: var(--brand); }

.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 16px 0;
    backdrop-filter: blur(16px);
    background: rgba(255, 252, 247, 0.9);
    border-bottom: 1px solid var(--border);
}

.navbar.scrolled {
    padding: 10px 0;
    background: rgba(255, 252, 247, 0.97);
    box-shadow: 0 4px 24px rgba(28, 28, 26, 0.06);
}

.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    display: flex; justify-content: space-between; align-items: center;
}

.nav-logo {
    display: flex; align-items: center; gap: 10px;
    text-decoration: none; color: var(--text-primary);
    font-weight: 700; font-size: 20px;
}

.nav-logo .hl {
    background: linear-gradient(135deg, var(--brand), var(--brand-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex; align-items: center; gap: 16px;
    list-style: none; flex-wrap: wrap;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none; font-size: 13px; font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active { color: var(--brand); }

.nav-links .btn-cta {
    padding: 8px 18px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white !important;
    border-radius: 8px; font-weight: 600;
}

.menu-toggle {
    display: none; background: none; border: none;
    color: var(--text-primary); font-size: 24px; cursor: pointer;
}

.mobile-menu {
    display: none; position: fixed; inset: 0;
    background: rgba(245, 240, 230, 0.98);
    z-index: 2000; flex-direction: column;
    align-items: center; justify-content: center;
}

.mobile-menu.open { display: flex; }

.mobile-menu-close {
    position: absolute; top: 16px; right: 20px;
    background: none; border: none;
    color: var(--text-primary); font-size: 28px; cursor: pointer;
}

.mobile-menu a {
    display: block; padding: 14px 40px;
    color: var(--text-secondary); text-decoration: none; font-size: 17px;
}

.mobile-menu .btn-m {
    margin-top: 16px; padding: 12px 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white !important; border-radius: 10px;
}

.page-hero {
    padding: 150px 0 56px;
    background:
        linear-gradient(160deg, #F7F2E8 0%, #EBE4D6 48%, #E2DACB 100%);
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.page-hero-inner { max-width: 820px; margin: 0 auto; padding: 0 24px; }

.breadcrumb { font-size: 13px; color: var(--text-secondary); margin-bottom: 16px; }
.breadcrumb a { color: var(--text-secondary); text-decoration: none; }
.breadcrumb a:hover { color: var(--primary); }

.article-tag, .hero-tag {
    display: inline-block; padding: 4px 14px; margin-bottom: 14px;
    background: rgba(61, 90, 64, 0.1);
    border: 1px solid rgba(61, 90, 64, 0.22);
    border-radius: 50px; font-size: 12px; color: var(--brand);
}

.page-hero h1 {
    font-size: 36px; font-weight: 900; margin-bottom: 14px;
    line-height: 1.35; color: var(--text-primary);
}

.hero-lead, .hero-desc {
    font-size: 16px; color: var(--text-secondary);
    max-width: 640px; margin: 0 auto;
}

.article-layout {
    max-width: 1100px; margin: 0 auto; padding: 40px 24px 80px;
    display: grid; grid-template-columns: 1fr 280px; gap: 36px; align-items: start;
}

.article-body {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px; padding: 36px 32px;
    box-shadow: var(--shadow);
}

.article-body .intro { margin-bottom: 28px; color: var(--text-secondary); font-size: 15px; }
.article-body h2 { font-size: 20px; margin: 28px 0 12px; color: var(--text-primary); }
.article-body h2:first-of-type { margin-top: 0; }
.article-body p { font-size: 15px; color: var(--text-secondary); margin-bottom: 14px; }

.faq-block {
    margin-top: 32px; padding-top: 24px;
    border-top: 1px solid var(--border);
}

.faq-item {
    margin-bottom: 12px;
    background: rgba(61, 90, 64, 0.04);
    border: 1px solid var(--border);
    border-radius: 10px; padding: 12px 16px;
}

.faq-item summary { cursor: pointer; font-weight: 600; font-size: 14px; color: var(--text-primary); }
.faq-item p { margin: 10px 0 0; font-size: 14px; }

.cta-panel {
    margin-top: 36px; padding: 28px; border-radius: 14px;
    background: linear-gradient(135deg, rgba(61, 90, 64, 0.1), rgba(196, 92, 38, 0.08));
    border: 1px solid rgba(61, 90, 64, 0.2);
}

.cta-panel h2 { margin-top: 0; font-size: 22px; color: var(--text-primary); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px; }

.btn-primary {
    display: inline-flex; padding: 12px 28px; font-weight: 600; font-size: 14px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white; border-radius: 10px; text-decoration: none;
}

.btn-ghost {
    display: inline-flex; padding: 12px 24px; font-weight: 600; font-size: 14px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 10px; text-decoration: none;
    background: #fff;
}

.sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px; padding: 20px; margin-bottom: 16px;
    box-shadow: var(--shadow);
}

.sidebar-card h3 { font-size: 14px; margin-bottom: 12px; color: var(--text-primary); }

.related-link, .sidebar-link {
    display: block; padding: 8px 0; font-size: 13px; color: var(--text-secondary);
    text-decoration: none; border-bottom: 1px solid var(--border);
}

.related-link:hover, .sidebar-link:hover { color: var(--primary); }

.academy-grid {
    max-width: 1100px; margin: 0 auto; padding: 0 24px 80px;
    display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px;
}

.academy-card {
    display: block; text-decoration: none; color: inherit;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px; padding: 22px;
    box-shadow: var(--shadow);
    transition: 0.2s;
}

.academy-card:hover {
    border-color: rgba(196, 92, 38, 0.35);
    transform: translateY(-2px);
}

.ac-cat { font-size: 11px; color: var(--brand); text-transform: none; }
.academy-card h3 { font-size: 16px; margin: 10px 0 8px; line-height: 1.4; color: var(--text-primary); }
.academy-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

.filter-bar { max-width: 1100px; margin: 0 auto 24px; padding: 0 24px; }
.filter-bar p { font-size: 14px; color: var(--text-secondary); }

.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    text-align: center;
    background: rgba(255, 252, 247, 0.7);
}

.footer p { font-size: 13px; color: var(--text-secondary); }
.footer .links a {
    color: var(--text-secondary); text-decoration: none;
    margin: 0 10px; font-size: 13px;
}
.footer .links a:hover { color: var(--primary); }

@media (max-width: 900px) {
    .article-layout { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .menu-toggle { display: block; }
    .page-hero h1 { font-size: 28px; }
}

.pillar-nav {
    max-width: 1100px; margin: 0 auto 8px; padding: 0 24px;
    display: flex; gap: 12px; flex-wrap: wrap;
}

.pillar-nav a {
    padding: 10px 20px; border-radius: 50px; font-size: 14px; font-weight: 600;
    text-decoration: none; color: var(--text-secondary);
    border: 1px solid var(--border); background: var(--bg-card);
}

.pillar-nav a:hover {
    color: var(--primary);
    border-color: rgba(196, 92, 38, 0.35);
}

.pillar-section { max-width: 1100px; margin: 0 auto 48px; padding: 0 24px; }
.pillar-head { margin-bottom: 20px; }
.pillar-head h2 { font-size: 26px; font-weight: 800; margin-bottom: 8px; color: var(--text-primary); }
.pillar-head p { font-size: 14px; color: var(--text-secondary); }
.pillar-grid { padding: 0; max-width: none; margin: 0; }

/* 顶栏产品下拉（大站导航） */
.nav-dropdown { position: relative; }
.nav-dropdown > a { cursor: pointer; }
.nav-dropdown > a::after { content: ' ▾'; font-size: 10px; opacity: 0.5; }
.dropdown-menu {
    position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
    width: 240px; padding: 12px; margin-top: 12px;
    background: rgba(255, 252, 247, 0.98);
    border: 1px solid rgba(28, 28, 26, 0.12);
    border-radius: 16px; box-shadow: 0 16px 48px rgba(28, 28, 26, 0.12);
    opacity: 0; visibility: hidden; transform: translateX(-50%) translateY(8px);
    transition: all 0.25s ease; z-index: 1100;
    display: grid; grid-template-columns: 1fr; gap: 6px;
}
.nav-dropdown:hover .dropdown-menu {
    opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}
.dropdown-menu::before {
    content: ''; position: absolute; top: -8px; left: 50%;
    transform: translateX(-50%); width: 100%; height: 8px;
}
.dropdown-item {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 12px; border-radius: 10px;
    text-decoration: none; color: var(--text-secondary);
    font-size: 13px; font-weight: 500;
}
.dropdown-item:hover { background: rgba(61, 90, 64, 0.06); color: var(--text-primary); }
.dropdown-item .di-icon {
    width: 28px; height: 28px; display: flex; align-items: center; justify-content: center;
    border-radius: 8px; font-size: 14px; flex-shrink: 0;
    background: rgba(196, 92, 38, 0.08);
}

/* 学院总览栏目卡 */
.hub-grid {
    max-width: 1100px; margin: 0 auto; padding: 0 24px 80px;
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px;
}
.hub-card {
    display: block; text-decoration: none; color: inherit;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 18px; padding: 28px 24px; box-shadow: var(--shadow);
    transition: 0.2s;
}
.hub-card:hover { border-color: rgba(196, 92, 38, 0.35); transform: translateY(-2px); }
.hub-card .hub-count { font-size: 12px; color: var(--brand); margin-bottom: 8px; }
.hub-card h2 { font-size: 20px; margin-bottom: 10px; color: var(--text-primary); }
.hub-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.hub-card .hub-more { margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--primary); }