*,
        *::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, 'Helvetica Neue', sans-serif;
            background: #f5f7fc;
            color: #1a1a2e;
            line-height: 1.75;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0057b3;
            text-decoration: underline;
            transition: color 0.2s;
        }
        a:hover {
            color: #ff6b35;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #0b1a2a;
            margin-top: 0;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 1.2rem;
            letter-spacing: -0.02em;
            border-left: 6px solid #ff6b35;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            border-bottom: 3px solid #e0e7f0;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.4rem;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        h4 {
            font-size: 1.15rem;
            margin-top: 1.4rem;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1a2a 0%, #1a2f42 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.03em;
            background: linear-gradient(90deg, #ff6b35, #f7931e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            font-size: 1.6rem;
            -webkit-text-fill-color: #ff6b35;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.6rem;
            padding: 0.3rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            border-color: #ff6b35;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 0.2rem 1.4rem;
            align-items: center;
        }
        .main-nav a {
            color: #e0e7f0;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .main-nav a:hover {
            color: #ff6b35;
            border-bottom-color: #ff6b35;
        }
        .main-nav .active-nav {
            color: #ff6b35;
            border-bottom-color: #ff6b35;
        }
        .breadcrumb-wrap {
            background: #e8edf5;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0d8e5;
        }
        .breadcrumb-wrap nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb-wrap a {
            color: #0057b3;
            text-decoration: none;
        }
        .breadcrumb-wrap a:hover {
            text-decoration: underline;
        }
        .breadcrumb-wrap span {
            color: #4a5a72;
        }
        .content-wrap {
            background: #fff;
            border-radius: 20px;
            padding: 2.5rem 2.8rem;
            margin: 2rem 0;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.05);
        }
        .featured-image {
            margin: 1.8rem 0 2.5rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
        }
        .featured-image figcaption {
            font-size: 0.85rem;
            color: #4a5a72;
            padding: 0.6rem 0 0 0.4rem;
            font-style: italic;
        }
        .last-updated {
            display: inline-block;
            background: #f0f4fa;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #2a3a4a;
            margin-bottom: 1.2rem;
            border: 1px solid #d0d8e5;
        }
        .last-updated i {
            margin-right: 6px;
            color: #ff6b35;
        }
        .highlight-box {
            background: #fef6f0;
            border-left: 5px solid #ff6b35;
            padding: 1.2rem 1.8rem;
            margin: 1.8rem 0;
            border-radius: 0 12px 12px 0;
        }
        .highlight-box strong {
            color: #c0392b;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.8rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.98rem;
            background: #fafcff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        th {
            background: #0b1a2a;
            color: #fff;
            padding: 0.8rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #e0e7f0;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f0f7ff;
        }
        .interactive-module {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.8rem 0 1.5rem;
            padding-top: 2rem;
            border-top: 3px dashed #d0d8e5;
        }
        .module-card {
            background: #f8faff;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8edf5;
        }
        .module-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.3rem;
        }
        .module-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .module-card input,
        .module-card textarea,
        .module-card select {
            padding: 0.7rem 1rem;
            border: 1.5px solid #d0d8e5;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            background: #fff;
            transition: 0.2s;
            width: 100%;
        }
        .module-card input:focus,
        .module-card textarea:focus,
        .module-card select:focus {
            outline: none;
            border-color: #ff6b35;
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
        }
        .module-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .btn {
            padding: 0.7rem 1.6rem;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.25s;
            background: #0b1a2a;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            justify-content: center;
        }
        .btn:hover {
            background: #ff6b35;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
        }
        .btn-secondary {
            background: #e0e7f0;
            color: #0b1a2a;
        }
        .btn-secondary:hover {
            background: #c8d2e0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.3rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            transition: 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f7931e;
        }
        .friend-links-wrap {
            background: #0b1a2a;
            color: #c8d2e0;
            padding: 2.2rem 0 1.5rem;
            margin-top: 2.5rem;
            border-radius: 20px 20px 0 0;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.2rem 2.5rem;
            font-size: 1rem;
        }
        friend-link a {
            color: #f0c8a0;
            text-decoration: none;
            font-weight: 500;
            transition: 0.2s;
        }
        friend-link a:hover {
            color: #ff6b35;
            text-decoration: underline;
        }
        .site-footer {
            background: #07121f;
            color: #a0b0c5;
            padding: 1.8rem 0 2.5rem;
            font-size: 0.9rem;
            text-align: center;
            border-top: 1px solid #1a2f42;
        }
        .site-footer .copyright {
            margin-top: 0.8rem;
            font-size: 0.85rem;
            color: #6a7a8f;
        }
        .site-footer a {
            color: #f0c8a0;
        }
        @media (max-width: 900px) {
            .content-wrap {
                padding: 1.8rem 1.2rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .interactive-module {
                grid-template-columns: 1fr;
                gap: 1.4rem;
            }
            .header-inner {
                gap: 0.5rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 680px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 0 0.4rem;
                gap: 0.6rem 0;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 0.4rem;
            }
            .main-nav.show {
                display: flex;
            }
            .main-nav a {
                font-size: 1rem;
                padding: 0.4rem 0;
                width: 100%;
            }
            .content-wrap {
                padding: 1.2rem 0.8rem;
                border-radius: 12px;
            }
            h1 {
                font-size: 1.6rem;
                padding-left: 0.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 0 12px;
            }
            .featured-image {
                margin: 1rem 0 1.5rem;
            }
            table {
                font-size: 0.85rem;
            }
            th,
            td {
                padding: 0.5rem 0.6rem;
            }
            .module-card {
                padding: 1.2rem;
            }
            friend-link {
                gap: 0.8rem 1.5rem;
                font-size: 0.9rem;
                flex-wrap: wrap;
                justify-content: center;
            }
        }
        @media (max-width: 420px) {
            html {
                font-size: 15px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo i {
                font-size: 1.2rem;
            }
            .btn {
                font-size: 0.9rem;
                padding: 0.5rem 1.2rem;
            }
        }
        .anchor-offset {
            scroll-margin-top: 90px;
        }
        .inline-icon {
            margin-right: 0.3rem;
        }
        .badge {
            display: inline-block;
            background: #ff6b35;
            color: #fff;
            padding: 0.15rem 0.8rem;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .flex-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.3rem 1.5rem;
        }
        @media (max-width: 500px) {
            .flex-list {
                grid-template-columns: 1fr;
            }
        }