:root { --primary: #003c71; --secondary: #16a34a; --accent: #f59e0b; --bg: #f8fafc; --text: #1e293b; --muted: #64748b; --card: #ffffff; --radius: 12px; --shadow: 0 4px 6px rgba(0, 0, 0, .05); }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body { font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; }
        img { max-width: 100%; height: auto; }
        .container { width: min(1200px, 100% - 2rem); margin-inline: auto; }
        a { color: var(--primary); text-decoration: none; transition: color .2s; }
        a:hover { color: var(--secondary); text-decoration: underline; }
        .my-logo { font-size: 1.6rem; font-weight: 800; color: #fff; text-decoration: none !important; background: linear-gradient(135deg, #0057a8, #1a2a6c); padding: .3rem .7rem; border-radius: 6px; }
        .badge { display: inline-block; background: #e0e7ff; color: var(--primary); font-size: .75rem; padding: .1rem .5rem; border-radius: 99px; font-weight: 600; }
        .site-header { background: #0f172a; border-bottom: 4px solid var(--secondary); position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 10px rgba(0, 0, 0, .2); }
        .top-bar { background: var(--primary); color: #fff; font-size: .8rem; padding: .4rem 0; text-align: center; }
        .header-main { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .8rem 0; flex-wrap: wrap; }
        .logo-wrap { display: flex; align-items: center; gap: .7rem; }
        .logo-text { color: #fff; font-size: 1.4rem; font-weight: 700; letter-spacing: .5px; }
        .nav-c { display: flex; gap: 2rem; align-items: center; list-style: none; }
        .nav-c a { color: #cbd5e1; text-decoration: none; font-size: .9rem; padding: .4rem 0; border-bottom: 2px solid transparent; transition: .3s; }
        .nav-c a:hover { color: #fff; border-color: var(--secondary); }
        .hamburger { display: none; flex-direction: column; cursor: pointer; background: none; border: none; padding: .5rem; }
        .hamburger span { width: 24px; height: 2px; background: #fff; margin: 4px 0; border-radius: 2px; transition: .3s; }
        @media (max-width:768px) {
            .hamburger { display: flex; }
            .nav-wrap { display: none; width: 100%; }
            .nav-wrap.open { display: block; }
            .nav-c { flex-direction: column; gap: .8rem; padding: 1rem 0; align-items: flex-start; }
        }
        .breadcrumb-wrap { background: #f1f5f9; padding: .5rem 0; font-size: .85rem; }
        .breadcrumb { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; }
        .breadcrumb li+li::before { content: "›"; padding: 0 .3rem; color: var(--muted); }
        .hero { background: linear-gradient(140deg, #0f172a, #003c71 60%, #1a2a6c); color: #fff; padding: 2.5rem 0 2rem; text-align: center; }
        .hero h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); line-height: 1.15; max-width: 900px; margin: 0 auto .8rem; }
        .hero .sub { font-size: 1.05rem; max-width: 750px; margin: 0 auto; color: #bfdbfe; }
        .hero-meta { margin-top: 1rem; font-size: .85rem; color: #93c5fd; }
        .cta { display: inline-block; background: var(--secondary); color: #fff; padding: .5rem 1.2rem; border-radius: 99px; font-weight: 600; font-size: .9rem; margin-top: 1rem; box-shadow: 0 4px 10px rgba(22, 163, 74, .2); }
        .cta:hover { transform: translateY(-2px); box-shadow: 0 6px 14px rgba(0, 0, 0, .1); background: #15803d; color: #fff; text-decoration: none; }
        .main-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 2rem; padding: 2rem 0 1rem; }
        @media(max-width:1000px) { .main-grid { grid-template-columns: 1fr; } }
        .content article { background: var(--card); border-radius: var(--radius); padding: 2rem; box-shadow: var(--shadow); }
        .sidebar { position: sticky; top: 80px; align-self: start; }
        @media(max-width:1000px) { .sidebar { position: static; } }
        h2 { font-size: 1.7rem; margin: 2rem 0 .8rem; color: var(--primary); border-bottom: 2px solid #e2e8f0; padding-bottom: .4rem; }
        h3 { font-size: 1.3rem; margin: 1.6rem 0 .6rem; color: #0f172a; }
        h4 { font-size: 1.1rem; margin: 1.2rem 0 .4rem; color: var(--muted); }
        .hero h1 { border-bottom: none; }
        p { margin-bottom: 1rem; }
        ul, ol { margin-bottom: 1.2rem; padding-left: 1.4rem; }
        li { margin-bottom: .35rem; }
        .image-figure { margin: 1.8rem 0; text-align: center; }
        .image-figure img { border-radius: var(--radius); box-shadow: 0 10px 20px rgba(0, 0, 0, .07); }
        .image-figure figcaption { font-size: .85rem; color: var(--muted); margin-top: .5rem; font-style: italic; }
        .tip-box { background: #f0fdf4; border-left: 5px solid var(--secondary); padding: 1rem 1.2rem; border-radius: 8px; margin: 1.5rem 0; }
        .alert-box { background: #fffbeb; border-left: 5px solid var(--accent); padding: 1rem 1.2rem; border-radius: 8px; margin: 1.5rem 0; }
        .danger-box { background: #fef2f2; border-left: 5px solid #dc2626; padding: 1rem 1.2rem; border-radius: 8px; margin: 1.5rem 0; }
        .table-wrap { overflow-x: auto; margin: 1rem 0; }
        table { border-collapse: collapse; width: 100%; font-size: .9rem; }
        th { background: var(--primary); color: #fff; text-align: left; padding: .6rem .8rem; }
        td { border: 1px solid #e2e8f0; padding: .5rem .8rem; }
        tr:nth-child(even) { background: #f8fafc; }
        .form-c { background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 10px; padding: 1.4rem; margin-top: 1.5rem; }
        .form-c input, .form-c textarea { width: 100%; padding: .6rem .8rem; border: 1px solid #cbd5e1; border-radius: 8px; margin-bottom: .8rem; font-family: inherit; font-size: .9rem; }
        .form-c label { font-weight: 600; font-size: .85rem; }
        .form-group { margin-bottom: .8rem; }
        .btn { display: inline-block; background: var(--primary); border: none; color: #fff; padding: .7rem 1.4rem; border-radius: 8px; font-weight: 600; cursor: pointer; font-size: .9rem; transition: .2s; }
        .btn:hover { background: #0057a8; text-decoration: none; }
        .btn-secondary { background: var(--secondary); }
        .btn-secondary:hover { background: #15803d; }
        .rating-stars { display: inline-flex; gap: .2rem; flex-direction: row-reverse; justify-content: flex-end; }
        .rating-stars input { display: none; }
        .rating-stars label { font-size: 1.6rem; color: #ddd; cursor: pointer; transition: .2s; }
        .rating-stars input:checked~label, .rating-stars label:hover,
        .rating-stars label:hover~label { color: var(--accent); }
        .footer { background: #0f172a; color: #cbd5e1; padding: 2.5rem 0 1.5rem; margin-top: 3rem; font-size: .9rem; }
        friend-link { display: flex; flex-wrap: wrap; gap: 1.2rem; padding: .8rem 0; }
        friend-link a { color: #cbd5e1; background: rgba(255, 255, 255, .06); padding: .3rem .8rem; border-radius: 99px; font-size: .85rem; }
        friend-link a:hover { background: var(--secondary); color: #fff; text-decoration: none; }
        .footer-copy { border-top: 1px solid #374151; margin-top: 1.5rem; padding-top: 1rem; text-align: center; font-size: .8rem; color: #9aa3af; }
        .share-icons { margin: 1rem 0; }
        .share-icons a { display: inline-block; margin-right: .5rem; color: var(--text); font-size: 1.2rem; background: #eef2f7; padding: .4rem .7rem; border-radius: 6px; }
        .share-icons a:hover { background: var(--primary); color: #fff; text-decoration: none; }
        @media(max-width:480px) { .header-main { justify-content: space-between; } .content article { padding: 1rem; } }