*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f8f9fc;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #0056b3;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #003077;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin: 1.5rem 0 1rem;
            color: #0b1e33;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 2.4rem 0 1rem;
            padding-bottom: 0.4rem;
            border-bottom: 3px solid #e0e7f0;
            color: #123456;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 2rem 0 0.8rem;
            color: #1f4a6e;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 1.4rem 0 0.6rem;
            color: #2a5f7a;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 400;
            color: #2c3e50;
            background: #eef3f9;
            padding: 1.2rem 1.8rem;
            border-radius: 12px;
            border-left: 5px solid #0056b3;
        }
        .highlight {
            background: #fcf3d9;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
            font-weight: 600;
        }
        strong {
            color: #0b2a41;
        }
        em {
            font-style: italic;
            color: #3b5e7a;
        }
        header {
            background: #ffffff;
            border-bottom: 1px solid #dce3ec;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            color: #0b1e33;
            letter-spacing: -0.03em;
            background: linear-gradient(145deg, #0b1e33, #2a5f7a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none !important;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo i {
            font-size: 1.8rem;
            -webkit-text-fill-color: #0056b3;
            color: #0056b3;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1e1e2a;
            cursor: pointer;
            padding: 0.3rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #eef3f9;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        nav a {
            padding: 0.4rem 1rem;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.95rem;
            color: #1e1e2a;
            transition: background 0.2s, color 0.2s;
        }
        nav a:hover,
        nav a:focus {
            background: #0056b3;
            color: #fff;
            text-decoration: none;
        }
        nav a.active {
            background: #0056b3;
            color: #fff;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.8rem 0 0.2rem;
            font-size: 0.9rem;
            color: #5a6f80;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 0.6rem;
            color: #a0b3c4;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #2a5f7a;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .hero-img {
            margin: 2rem 0 1.5rem;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            background: #eaf0f7;
            overflow: hidden;
        }
        .hero-img img {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
        }
        .hero-img figcaption {
            padding: 0.6rem 1.2rem;
            font-size: 0.9rem;
            color: #3b5e7a;
            background: #f0f4fa;
            font-style: italic;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.8rem;
            margin: 2rem 0;
        }
        .card {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            transition: transform 0.2s, box-shadow 0.2s;
            border: 1px solid #e9eef4;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
        }
        .card i {
            font-size: 2rem;
            color: #0056b3;
            margin-bottom: 0.6rem;
        }
        .card h3 {
            margin-top: 0.2rem;
            border-bottom: none;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6rem 0;
            font-size: 0.98rem;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.8rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid #e3e9f0;
        }
        th {
            background: #eaf0f7;
            font-weight: 700;
            color: #0b1e33;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f6f9fd;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #1f3a4b;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1px solid #cbd5e1;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            background: #fff;
            transition: border 0.2s, box-shadow 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #0056b3;
            box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            padding: 0.7rem 2rem;
            font-size: 1rem;
            font-weight: 600;
            border: none;
            border-radius: 30px;
            background: #0056b3;
            color: #fff;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .btn:hover {
            background: #003f88;
            transform: scale(0.98);
        }
        .btn-secondary {
            background: #eaf0f7;
            color: #1e1e2a;
        }
        .btn-secondary:hover {
            background: #d0dceb;
        }
        .rating-stars {
            display: flex;
            gap: 0.4rem;
            font-size: 2rem;
            color: #f5b342;
            cursor: pointer;
        }
        .rating-stars i {
            transition: transform 0.15s, color 0.15s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            transform: scale(1.15);
            color: #f59e0b;
        }
        .comment-item {
            background: #fff;
            border-radius: 12px;
            padding: 1.2rem 1.6rem;
            margin-bottom: 1rem;
            border-left: 4px solid #0056b3;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
        }
        .comment-item .meta {
            font-size: 0.85rem;
            color: #6b7f92;
            display: flex;
            gap: 1rem;
            margin-bottom: 0.3rem;
        }
        .comment-item .meta strong {
            color: #1e2f3f;
        }
        friend-link {
            display: block;
            background: #eef3f9;
            border-radius: 16px;
            padding: 1.6rem 2rem;
            margin: 2.4rem 0 1.6rem;
            font-style: normal;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.8rem 0.2rem 0;
            padding: 0.2rem 0.8rem;
            background: #ffffff;
            border-radius: 30px;
            font-weight: 500;
            border: 1px solid #d0dceb;
            transition: background 0.2s, border-color 0.2s;
        }
        friend-link a:hover {
            background: #0056b3;
            color: #fff;
            border-color: #0056b3;
            text-decoration: none;
        }
        footer {
            background: #0b1e33;
            color: #d4dee8;
            padding: 2.4rem 0 1.6rem;
            border-radius: 20px 20px 0 0;
            margin-top: 2.8rem;
        }
        footer .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.6rem;
        }
        footer a {
            color: #a6c4e0;
        }
        footer a:hover {
            color: #fff;
        }
        footer .copyright {
            width: 100%;
            text-align: center;
            font-size: 0.9rem;
            border-top: 1px solid #1f3a4f;
            padding-top: 1.2rem;
            margin-top: 0.8rem;
            color: #8aa0b5;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.6rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .header-inner {
                flex-wrap: nowrap;
            }
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #ffffff;
                padding: 0.8rem 0 1.2rem;
                border-top: 1px solid #e3e9f0;
                margin-top: 0.6rem;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 0.6rem 1.2rem;
                border-radius: 12px;
                width: 100%;
            }
            .breadcrumb {
                font-size: 0.8rem;
                overflow-x: auto;
                white-space: nowrap;
                padding-bottom: 0.4rem;
            }
            .hero-img img {
                max-height: 220px;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            table {
                font-size: 0.85rem;
            }
            th,
            td {
                padding: 0.5rem 0.7rem;
            }
            footer .container {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .rating-stars {
                font-size: 1.6rem;
            }
        }
        @media (min-width: 769px) {
            .nav-toggle {
                display: none !important;
            }
            nav {
                display: flex !important;
            }
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-wrap: wrap;
        }
        .gap-1 {
            gap: 1rem;
        }
        .text-sm {
            font-size: 0.92rem;
        }
        .text-muted {
            color: #5f7486;
        }
        .rounded-full {
            border-radius: 999px;
        }
        .bg-soft {
            background: #f0f5fb;
            padding: 1.2rem 1.6rem;
            border-radius: 16px;
        }
        .border-left-accent {
            border-left: 5px solid #0056b3;
            padding-left: 1.2rem;
        }
        .emoji-lg {
            font-size: 1.8rem;
        }
        .section-icon {
            margin-right: 0.5rem;
        }