*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #0d47a1;
            --primary-dark: #002171;
            --accent: #ff6f00;
            --accent-light: #ffa040;
            --bg-light: #f5f9ff;
            --card-bg: #ffffff;
            --text-dark: #1a2a3a;
            --text-muted: #55677a;
            --border-light: #e2eaf3;
            --radius: 14px;
            --shadow: 0 8px 24px rgba(13, 71, 161, .08);
            --shadow-hover: 0 14px 32px rgba(13, 71, 161, .15);
            --transition: all .25s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.8;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            letter-spacing: -0.5px;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            color: var(--accent);
            font-size: 1.8rem;
        }
        .my-logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .site-header {
            background: #fff;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 999;
            border-bottom: 3px solid var(--accent);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            gap: 20px;
            flex-wrap: wrap;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-size: 1.4rem;
            padding: 8px 12px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary);
            color: #fff;
        }
        .site-nav {
            display: flex;
            gap: 8px;
            align-items: center;
            flex-wrap: wrap;
        }
        .site-nav a {
            padding: 8px 14px;
            border-radius: 30px;
            font-weight: 600;
            font-size: .92rem;
            background: transparent;
            color: var(--text-dark);
            white-space: nowrap;
        }
        .site-nav a:hover {
            background: var(--primary);
            color: #fff;
        }
        .site-nav a.active {
            background: var(--primary);
            color: #fff;
        }
        .breadcrumb-wrap {
            background: linear-gradient(90deg, #e8f0fe, #fff);
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: .87rem;
        }
        .breadcrumb-wrap nav {
            display: flex;
            gap: 6px;
            align-items: center;
            flex-wrap: wrap;
        }
        .breadcrumb-wrap a {
            color: var(--primary);
        }
        .breadcrumb-wrap i {
            color: var(--text-muted);
            font-size: .8rem;
        }
        .hero {
            background: linear-gradient(135deg, #0d47a1 0%, #1976d2 50%, #42a5f5 100%);
            color: #fff;
            padding: 54px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: "🫧";
            position: absolute;
            font-size: 120px;
            opacity: .12;
            top: -10px;
            left: 5%;
            transform: rotate(-20deg);
        }
        .hero h1 {
            font-size: clamp(1.8rem, 4vw, 3.4rem);
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 10px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, .2);
        }
        .hero p {
            font-size: clamp(1rem, 2vw, 1.25rem);
            max-width: 700px;
            margin: 0 auto;
            opacity: .95;
        }
        .hero .hero-meta {
            margin-top: 18px;
            font-size: .9rem;
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .hero-meta span {
            background: rgba(255, 255, 255, .2);
            padding: 4px 12px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
        }
        section {
            margin: 40px 0;
        }
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .card h2 {
            font-size: 1.7rem;
            color: var(--primary);
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--accent);
            display: inline-block;
        }
        .card h3 {
            font-size: 1.2rem;
            color: var(--primary-dark);
            margin: 20px 0 10px;
        }
        .card h4 {
            font-size: 1rem;
            color: var(--text-dark);
            margin: 14px 0 6px;
            font-weight: 700;
        }
        .card p {
            margin-bottom: 14px;
        }
        .card ul,
        .card ol {
            margin: 0 0 16px 24px;
        }
        .card li {
            margin-bottom: 6px;
        }
        .highlight-box {
            background: #fff8f0;
            border-left: 5px solid var(--accent);
            padding: 16px 22px;
            border-radius: 10px;
            margin: 20px 0;
            font-weight: 500;
        }
        .info-box {
            background: #eef4ff;
            border-left: 5px solid var(--primary);
            padding: 16px 22px;
            border-radius: 10px;
            margin: 20px 0;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .content-image {
            margin: 28px auto;
            max-width: 780px;
            text-align: center;
        }
        .content-image img {
            width: 100%;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .content-image figcaption {
            font-size: .88rem;
            color: var(--text-muted);
            margin-top: 8px;
            font-style: italic;
        }
        .stats-bar {
            display: flex;
            justify-content: space-around;
            background: linear-gradient(90deg, #0d47a1, #1976d2);
            color: #fff;
            border-radius: var(--radius);
            padding: 22px 16px;
            flex-wrap: wrap;
            gap: 14px;
            margin: 32px 0;
        }
        .stat-item {
            text-align: center;
            min-width: 150px;
        }
        .stat-item .num {
            font-size: 2.3rem;
            font-weight: 900;
            line-height: 1;
        }
        .stat-item .label {
            font-size: .85rem;
            opacity: .9;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 18px 0;
            font-size: .95rem;
        }
        .data-table th,
        .data-table td {
            border: 1px solid var(--border-light);
            padding: 10px 14px;
            text-align: left;
        }
        .data-table th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .data-table tr:nth-child(even) {
            background: #f8fbff;
        }
        .faq-item {
            margin-bottom: 14px;
            border: 1px solid var(--border-light);
            border-radius: 10px;
            overflow: hidden;
        }
        .faq-item summary {
            padding: 14px 18px;
            cursor: pointer;
            background: #fff;
            font-weight: 600;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--primary);
        }
        .faq-item[open] summary::after {
            content: '\f077';
        }
        .faq-item .faq-content {
            padding: 14px 18px;
            border-top: 1px solid var(--border-light);
            background: #fafcff;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            font-weight: 600;
            display: block;
            margin-bottom: 5px;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border-light);
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 71, 161, .1);
        }
        .btn {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border: none;
            border-radius: 30px;
            font-size: .95rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 8px 18px rgba(255, 111, 0, .3);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-start;
            gap: 4px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ccc;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: var(--accent);
            transform: scale(1.08);
        }
        .site-footer {
            background: #0b1a2e;
            color: #b0c4de;
            padding: 50px 0 20px;
            margin-top: 60px;
            font-size: .92rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 30px;
        }
        .site-footer h3 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .site-footer a {
            color: #cfd8ef;
        }
        .site-footer a:hover {
            color: var(--accent);
        }
        .site-footer .footer-links li {
            list-style: none;
            margin-bottom: 6px;
        }
        .copyright {
            border-top: 1px solid #22364d;
            padding-top: 18px;
            text-align: center;
            color: #7e93ab;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, .05);
            border: 1px dashed #2d4a6b;
            padding: 12px 16px;
            border-radius: 10px;
            margin: 10px 0;
            font-size: .9rem;
        }
        friend-link a {
            color: #a5c9ff;
        }
        friend-link a:hover {
            color: var(--accent);
        }
        .search-box {
            display: flex;
            max-width: 500px;
            margin: 0 auto;
        }
        .search-box input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid var(--border-light);
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
            border-right: none;
        }
        .search-box button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0 24px;
            border-radius: 0 30px 30px 0;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--accent);
        }
        .to-top {
            position: fixed;
            bottom: 28px;
            right: 28px;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            border: none;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
            z-index: 999;
        }
        .to-top.show {
            opacity: 1;
            pointer-events: auto;
        }
        .to-top:hover {
            background: var(--accent);
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .site-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 10px 0;
            }
            .site-nav.open {
                display: flex;
            }
            .site-nav a {
                width: 100%;
                padding: 12px 14px;
                border-radius: 8px;
            }
            .header-inner {
                padding: 10px 16px;
            }
            .grid-2,
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .card {
                padding: 20px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                flex-direction: column;
                gap: 10px;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.5rem;
            }
            .card h2 {
                font-size: 1.3rem;
            }
            .search-box {
                flex-direction: column;
                gap: 8px;
            }
            .search-box input {
                border-radius: 30px;
                border: 2px solid var(--border-light);
            }
            .search-box button {
                border-radius: 30px;
                padding: 12px;
            }
        }