:root {
    --bg-primary: #FFFFFF;
    --bg-secondary: #F4F6F9;
    --bg-tertiary: #EBF0F5;
    --bg-card: #FFFFFF;
    --text-primary: #1B2A4A;
    --text-secondary: #4A5B7A;
    --text-muted: #8494A7;
    --text-inverse: #FFFFFF;
    --navy: #1B2A4A;
    --navy-light: #2C3E65;
    --blue: #2E6DAD;
    --blue-light: #4A90D9;
    --orange: #E8872A;
    --orange-light: #F5A623;
    --orange-dark: #D07020;
    --border-color: #D8DFE8;
    --border-light: #E8ECF1;
    --danger: #D63031;
    --success: #27AE60;
    --shadow-xs: 0 1px 2px rgba(27,42,74,0.06);
    --shadow-sm: 0 1px 4px rgba(27,42,74,0.08);
    --shadow-md: 0 4px 12px rgba(27,42,74,0.1);
    --shadow-lg: 0 8px 24px rgba(27,42,74,0.12);
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --font-heading: 'Georgia', 'Times New Roman', serif;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    --nav-height: 100px;
    --container-max: 1160px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-body); background: var(--bg-primary); color: var(--text-primary); line-height: 1.7; min-height: 100vh; font-size: 15px; }
a { color: var(--blue); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--navy); }
img { max-width: 100%; height: auto; }
.accent-bar { height: 8px; background: linear-gradient(90deg, var(--navy) 0%, var(--blue) 40%, var(--orange) 100%); position: fixed; top: 0; left: 0; right: 0; z-index: 1001; }
.main-nav { position: fixed; top: 8px; left: 0; right: 0; height: var(--nav-height); background: #fff; border-bottom: 1px solid var(--border-color); z-index: 1000; box-shadow: var(--shadow-sm); }
.nav-container { max-width: var(--container-max); margin: 0 auto; padding: 0 28px; height: 100%; display: flex; align-items: center; justify-content: space-between; }
.nav-logo img { height: 80px; width: auto; }
.nav-menu { display: flex; align-items: center; gap: 8px; flex: 1; justify-content: flex-end; }
.nav-links { display: flex; align-items: center; gap: 2px; margin-right: 20px; }
.nav-link { font-size: 0.88rem; font-weight: 500; color: var(--text-secondary); padding: 8px 14px; border-radius: var(--radius-sm); transition: all 0.2s ease; display: flex; align-items: center; gap: 5px; white-space: nowrap; }
.nav-link:hover { color: var(--navy); background: var(--bg-secondary); }
.nav-link i.fa-chevron-down { font-size: 0.55rem; transition: transform 0.2s; }
.nav-dropdown { position: relative; }
.nav-dropdown .dropdown-menu { position: absolute; top: calc(100% + 6px); left: 50%; transform: translateX(-50%) translateY(-6px); background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 6px; min-width: 210px; opacity: 0; visibility: hidden; transition: all 0.2s ease; box-shadow: var(--shadow-lg); }
.nav-dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.nav-dropdown:hover .nav-link i.fa-chevron-down { transform: rotate(180deg); }
.dropdown-wide { min-width: 250px !important; }
.dropdown-item { display: flex; align-items: center; gap: 10px; padding: 9px 14px; color: var(--text-secondary); font-size: 0.85rem; border-radius: var(--radius-sm); transition: all 0.15s ease; }
.dropdown-item:hover { color: var(--navy); background: var(--bg-secondary); }
.dropdown-item i { font-size: 0.8rem; width: 16px; text-align: center; color: var(--blue); }
.dropdown-heading { display: block; padding: 6px 14px; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 1.5px; color: var(--text-muted); font-weight: 700; }
.dropdown-divider { height: 1px; background: var(--border-light); margin: 4px 0; }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.btn-nav { font-size: 0.85rem; font-weight: 600; padding: 7px 18px; border-radius: var(--radius-sm); transition: all 0.2s ease; cursor: pointer; border: none; text-decoration: none; display: inline-block; }
.btn-nav-ghost { color: var(--text-secondary); background: transparent; }
.btn-nav-ghost:hover { color: var(--navy); background: var(--bg-secondary); }
.btn-nav-primary { color: #fff; background: var(--navy); }
.btn-nav-primary:hover { background: var(--navy-light); color: #fff; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 20px; height: 2px; background: var(--navy); border-radius: 2px; transition: all 0.3s; }
.main-content { padding-top: calc(var(--nav-height) + 8px); min-height: calc(100vh - 280px); }
.hero { position: relative; padding: 80px 28px 70px; background: linear-gradient(165deg, var(--navy) 0%, var(--navy-light) 50%, #3A5580 100%); color: #fff; overflow: hidden; }
.hero::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--orange) 0%, var(--orange-light) 100%); }
.hero-content { max-width: var(--container-max); margin: 0 auto; position: relative; text-align: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 6px 18px; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); border-radius: 100px; font-size: 0.78rem; font-weight: 600; color: var(--orange-light); margin-bottom: 24px; letter-spacing: 0.8px; text-transform: uppercase; }
.hero h1 { font-family: var(--font-heading); font-size: clamp(2rem, 4.5vw, 3.2rem); font-weight: 700; line-height: 1.25; margin-bottom: 18px; }
.gradient-text { color: var(--orange-light); }
.hero-subtitle { font-size: 1.05rem; color: rgba(255,255,255,0.75); max-width: 560px; margin: 0 auto 36px; line-height: 1.75; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-body); font-weight: 600; font-size: 0.9rem; padding: 11px 24px; border-radius: var(--radius-sm); border: none; cursor: pointer; transition: all 0.2s ease; text-decoration: none; letter-spacing: 0.02em; }
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-dark); color: #fff; box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; color: var(--text-secondary); border: 1px solid var(--border-color); }
.btn-outline:hover { color: var(--navy); border-color: var(--navy); background: var(--bg-secondary); }
.btn-outline-light { background: transparent; color: rgba(255,255,255,0.9); border: 1px solid rgba(255,255,255,0.3); }
.btn-outline-light:hover { background: rgba(255,255,255,0.1); color: #fff; }
.btn-sm { padding: 7px 16px; font-size: 0.82rem; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 28px; }
.section { padding: 64px 28px; }
.section-dark { background: var(--bg-secondary); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-family: var(--font-heading); font-size: 1.75rem; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.section-header p { color: var(--text-secondary); font-size: 1rem; max-width: 520px; margin: 0 auto; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; max-width: var(--container-max); margin: 0 auto; }
.card { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 28px; transition: all 0.25s ease; box-shadow: var(--shadow-xs); }
.card:hover { border-color: var(--blue); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card-icon { width: 44px; height: 44px; border-radius: var(--radius-md); background: var(--bg-tertiary); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.card-icon i { font-size: 1.1rem; color: var(--blue); }
.card h3 { font-family: var(--font-heading); font-size: 1.1rem; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.card p { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.7; }
.card-category { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1.5px; color: var(--orange); font-weight: 700; margin-bottom: 10px; }
.card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; font-size: 0.85rem; font-weight: 600; color: var(--blue); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: var(--container-max); margin: 0 auto; }
.category-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; max-width: var(--container-max); margin: 0 auto; }
.category-card { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 32px; text-align: center; transition: all 0.25s ease; box-shadow: var(--shadow-xs); text-decoration: none; color: inherit; display: block; }
.category-card:hover { border-color: var(--blue); box-shadow: var(--shadow-md); transform: translateY(-2px); color: inherit; }
.category-card-icon { width: 56px; height: 56px; border-radius: 50%; background: var(--bg-tertiary); display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; }
.category-card-icon i { font-size: 1.3rem; color: var(--blue); }
.category-card h3 { font-family: var(--font-heading); font-size: 1.05rem; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.category-card p { color: var(--text-muted); font-size: 0.85rem; }
.category-card .item-count { display: inline-block; margin-top: 14px; font-size: 0.75rem; font-weight: 600; color: var(--blue); background: rgba(46,109,173,0.08); padding: 3px 12px; border-radius: 100px; }
.breadcrumb { max-width: var(--container-max); margin: 0 auto; padding: 16px 28px 0; font-size: 0.82rem; color: var(--text-muted); }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb span { margin: 0 6px; }
.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; max-width: var(--container-max); margin: 0 auto; }
.product-card { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg); overflow: hidden; transition: all 0.25s ease; box-shadow: var(--shadow-xs); }
.product-card:hover { border-color: var(--blue); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.product-body { padding: 22px; }
.product-body h3 { font-family: var(--font-heading); font-size: 1rem; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.product-body p { color: var(--text-secondary); font-size: 0.83rem; line-height: 1.6; margin-bottom: 14px; }
.pmi-badge { display: flex; align-items: center; justify-content: center; gap: 16px; padding: 32px 28px; border-top: 1px solid var(--border-light); }
.pmi-badge-text { color: var(--text-muted); font-size: 0.82rem; }
.page-header { padding: 48px 28px 36px; text-align: center; background: var(--bg-secondary); border-bottom: 1px solid var(--border-light); }
.page-header h1 { font-family: var(--font-heading); font-size: 2rem; font-weight: 700; color: var(--navy); }
.page-header .gradient-text { color: var(--blue); }
.page-header p { color: var(--text-secondary); font-size: 0.95rem; margin-top: 8px; }
.form-container { max-width: 560px; margin: 0 auto; padding: 40px 28px; }
.form-card { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-sm); }
.form-header { text-align: center; margin-bottom: 32px; }
.form-header h1 { font-family: var(--font-heading); font-size: 1.6rem; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.form-header p { color: var(--text-secondary); font-size: 0.88rem; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.form-control { width: 100%; padding: 10px 14px; background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius-sm); color: var(--text-primary); font-family: var(--font-body); font-size: 0.9rem; transition: all 0.2s; outline: none; }
.form-control:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(46,109,173,0.1); }
.form-control::placeholder { color: var(--text-muted); }
.form-submit { width: 100%; padding: 12px; margin-top: 6px; }
.def-item { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-md); margin-bottom: 10px; overflow: hidden; box-shadow: var(--shadow-xs); }
.def-item:hover { border-color: var(--blue); }
.def-toggle { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; background: none; border: none; color: var(--navy); font-family: var(--font-body); font-size: 0.95rem; font-weight: 600; cursor: pointer; text-align: left; transition: background 0.2s; }
.def-toggle:hover { background: var(--bg-secondary); }
.def-toggle span { display: flex; align-items: center; gap: 12px; }
.def-icon { color: var(--blue); font-size: 0.9rem; width: 20px; text-align: center; }
.def-arrow { font-size: 0.65rem; color: var(--text-muted); transition: transform 0.3s ease; }
.def-item.open .def-arrow { transform: rotate(180deg); }
.def-body { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; padding: 0 22px; }
.def-item.open .def-body { max-height: 2000px; padding: 0 22px 24px; }
.def-body h4 { color: var(--blue); font-family: var(--font-heading); font-size: 0.92rem; font-weight: 700; margin-bottom: 10px; margin-top: 14px; }
.def-body p { color: var(--text-secondary); line-height: 1.8; margin-bottom: 10px; font-size: 0.9rem; }
.def-body ul { color: var(--text-secondary); padding-left: 20px; margin-bottom: 14px; font-size: 0.9rem; line-height: 1.8; }
.def-body li { margin-bottom: 4px; }
.def-body code { background: rgba(46,109,173,0.08); color: var(--blue); padding: 2px 8px; border-radius: 3px; font-family: var(--font-mono); font-size: 0.82rem; }
.def-body strong { color: var(--navy); }
.def-body em { color: var(--orange); font-style: italic; }
.def-table { width: 100%; border-collapse: collapse; margin-bottom: 14px; }
.def-table td { padding: 9px 14px; border-bottom: 1px solid var(--border-light); font-size: 0.88rem; color: var(--text-secondary); vertical-align: top; }
.def-table td:first-child { width: 200px; white-space: nowrap; color: var(--navy); font-weight: 600; }
.content-list { max-width: 800px; margin: 0 auto; padding: 0 28px 64px; }
.content-list-item { display: flex; align-items: center; gap: 14px; padding: 16px 20px; background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-md); margin-bottom: 10px; transition: all 0.2s; color: var(--navy); box-shadow: var(--shadow-xs); }
.content-list-item:hover { border-color: var(--blue); background: var(--bg-secondary); transform: translateX(3px); color: var(--navy); }
.content-list-item i { color: var(--blue); font-size: 0.85rem; width: 18px; }
.content-list-item span { font-size: 0.9rem; font-weight: 500; }
.badge { display: inline-flex; align-items: center; padding: 2px 10px; border-radius: 100px; font-size: 0.68rem; font-weight: 700; text-transform: uppercase; }
.badge-success { background: rgba(39,174,96,0.1); color: var(--success); }
.badge-warning { background: rgba(232,135,42,0.1); color: var(--orange); }
.badge-info { background: rgba(46,109,173,0.1); color: var(--blue); }
.site-footer { background: var(--navy); color: rgba(255,255,255,0.7); padding: 52px 28px 24px; }
.footer-container { max-width: var(--container-max); margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.footer-logo img { height: 80px; filter: drop-shadow(1px 1px 3px #65a958); }
.footer-tagline { color: rgba(255,255,255,0.5); font-size: 0.85rem; line-height: 1.6; }
.footer-links-section h4 { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 1.5px; color: rgba(255,255,255,0.5); margin-bottom: 14px; font-weight: 700; }
.footer-links-section a { display: block; color: rgba(255,255,255,0.6); font-size: 0.85rem; padding: 4px 0; }
.footer-links-section a:hover { color: var(--orange-light); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 0.78rem; color: rgba(255,255,255,0.4); }
.footer-bottom a { color: rgba(255,255,255,0.4); }
.footer-bottom a:hover { color: var(--orange-light); }
@media (max-width: 1024px) { .features-grid { grid-template-columns: repeat(2,1fr); } .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; } }
@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .nav-menu { position: fixed; top: calc(var(--nav-height) + 8px); left: 0; right: 0; bottom: 0; background: #fff; flex-direction: column; padding: 20px; gap: 12px; transform: translateX(100%); transition: transform 0.3s ease; overflow-y: auto; border-top: 1px solid var(--border-color); }
    .nav-menu.open { transform: translateX(0); }
    .nav-links { flex-direction: column; width: 100%; margin-right: 0; }
    .nav-link { width: 100%; padding: 12px 16px; }
    .nav-dropdown .dropdown-menu { position: static; transform: none !important; opacity: 1; visibility: visible; box-shadow: none; border: none; background: transparent; padding-left: 16px; display: none; }
    .nav-dropdown.active .dropdown-menu { display: block; }
    .nav-actions { width: 100%; flex-direction: column; padding-top: 16px; border-top: 1px solid var(--border-color); }
    .btn-nav { width: 100%; text-align: center; display: block; }
    .features-grid, .card-grid, .products-grid, .category-grid { grid-template-columns: 1fr; }
    .hero { padding: 50px 24px; }
    .hero h1 { font-size: 1.8rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
    .def-table td:first-child { width: auto; white-space: normal; }
}
@media (max-width: 480px) { .hero-actions { flex-direction: column; } .hero-actions .btn { width: 100%; justify-content: center; } }