*,
        *::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: #f5f9fc;
            color: #1a2a3a;
            line-height: 1.75;
            padding: 0;
            margin: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #0a1f2e;
            margin-bottom: 0.5rem;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #0d2b3e;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            border-left: 5px solid #f7a81b;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #143d55;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #1a4a66;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            color: #1f3a4b;
        }
        a {
            color: #0077b6;
            text-decoration: none;
            transition: color 0.2s, border-bottom 0.2s;
            border-bottom: 1px solid transparent;
        }
        a:hover {
            color: #f7a81b;
            border-bottom-color: #f7a81b;
        }
        strong {
            color: #0a1f2e;
            font-weight: 700;
        }
        ul,
        ol {
            margin: 0.8rem 0 1.5rem 2rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0a2a3f 0%, #1a4a6a 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: #f7c948;
            text-decoration: none;
            letter-spacing: -0.5px;
            border: none;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            color: #f7a81b;
            font-size: 1.6rem;
        }
        .my-logo:hover {
            color: #ffd966;
            border: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: #e8f0f8;
            padding: 0.5rem 0.9rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            border: none;
            transition: background 0.2s, color 0.2s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .nav-menu a:hover {
            background: rgba(247, 168, 27, 0.25);
            color: #f7c948;
            border: none;
        }
        .nav-menu a i {
            font-size: 0.85rem;
        }
        .breadcrumb {
            background: #eaf0f5;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d6e0e8;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li {
            margin: 0;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #6a8a9e;
            font-weight: 700;
            margin-right: 0.3rem;
        }
        .breadcrumb a {
            color: #1a4a6a;
            border: none;
        }
        .breadcrumb a:hover {
            color: #f7a81b;
            border: none;
        }
        .breadcrumb .current {
            color: #6a8a9e;
        }
        .main-content {
            flex: 1;
            padding: 2rem 0 3rem;
        }
        .content-card {
            background: #fff;
            border-radius: 18px;
            padding: 2rem 2.2rem;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
            margin-bottom: 2rem;
        }
        .content-card table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0;
            font-size: 0.95rem;
        }
        .content-card th,
        .content-card td {
            padding: 0.75rem 1rem;
            border-bottom: 1px solid #e8edf2;
            text-align: left;
        }
        .content-card th {
            background: #f0f5fa;
            font-weight: 700;
            color: #0d2b3e;
        }
        .content-card tr:hover td {
            background: #f8fafc;
        }
        .code-tag {
            display: inline-block;
            background: #1a4a6a;
            color: #f7c948;
            font-family: 'Courier New', monospace;
            font-weight: 700;
            padding: 0.15rem 0.8rem;
            border-radius: 30px;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
        }
        .badge {
            display: inline-block;
            background: #27ae60;
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.2rem 0.7rem;
            border-radius: 30px;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .badge.expired {
            background: #b0b8c0;
        }
        .badge.new {
            background: #f7a81b;
        }
        .highlight-box {
            background: #fef9e7;
            border-left: 5px solid #f7a81b;
            padding: 1.2rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .featured-image {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
            border-radius: 16px;
            margin: 1.5rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .form-section {
            background: #fff;
            border-radius: 18px;
            padding: 1.8rem 2rem;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
            margin-bottom: 2rem;
        }
        .form-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #0d2b3e;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dce4ec;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.2s, box-shadow 0.2s;
            background: #fafcfe;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #f7a81b;
            box-shadow: 0 0 0 4px rgba(247, 168, 27, 0.12);
            outline: none;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #f7a81b;
            color: #0a1f2e;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        .btn:hover {
            background: #e8960e;
            transform: translateY(-1px);
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid #1a4a6a;
            color: #1a4a6a;
        }
        .btn-outline:hover {
            background: #1a4a6a;
            color: #fff;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.3rem;
            font-size: 1.8rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #d0d8e0;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f7c948;
        }
        friend-link {
            display: block;
            background: #eaf0f5;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin-top: 2rem;
        }
        friend-link .flist {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            margin-top: 0.8rem;
        }
        friend-link a {
            color: #1a4a6a;
            font-weight: 500;
            border: none;
            padding: 0.2rem 0;
        }
        friend-link a:hover {
            color: #f7a81b;
            border: none;
        }
        .site-footer {
            background: #0a1f2e;
            color: #b8c9d8;
            padding: 2.5rem 0 1.5rem;
            margin-top: 2rem;
            border-top: 4px solid #f7a81b;
        }
        .site-footer .container {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .site-footer .copyright {
            font-size: 0.85rem;
            text-align: center;
            color: #8aa3b5;
        }
        .site-footer .copyright strong {
            color: #f7c948;
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.3rem;
                padding: 0.8rem 0 0.3rem;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 0.5rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.6rem 1rem;
                border-radius: 10px;
                width: 100%;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .content-card {
                padding: 1.2rem 1.2rem;
            }
            .form-section {
                padding: 1.2rem 1.2rem;
            }
            .content-card table {
                font-size: 0.8rem;
            }
            .content-card th,
            .content-card td {
                padding: 0.4rem 0.5rem;
            }
            .container {
                padding: 0 1rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .star-rating {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.5rem;
            }
            .content-card {
                padding: 1rem 0.8rem;
            }
            .code-tag {
                font-size: 0.7rem;
                padding: 0.1rem 0.5rem;
            }
            .badge {
                font-size: 0.6rem;
                padding: 0.1rem 0.5rem;
            }
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
            align-items: center;
        }
        .gap-1 {
            gap: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .text-muted {
            color: #6a8a9e;
            font-size: 0.9rem;
        }
        .text-center {
            text-align: center;
        }
        .updated-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #e8f0f5;
            padding: 0.3rem 1.2rem;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #1a4a6a;
            font-weight: 500;
        }
        .updated-badge i {
            color: #f7a81b;
        }
        .nav-menu {
            transition: all 0.25s ease;
        }
        @media (min-width: 769px) {
            .nav-menu {
                display: flex !important;
            }
        }
        .interview-block {
            background: #f0f6fb;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 1.5rem 0;
            border-left: 4px solid #1a4a6a;
        }
        .interview-block .speaker {
            font-weight: 700;
            color: #0a2a3f;
        }
        .interview-block .speaker i {
            color: #f7a81b;
            margin-right: 0.4rem;
        }
        .data-highlight {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.2rem;
            margin: 1.5rem 0;
        }
        .data-highlight .stat {
            background: #f0f5fa;
            border-radius: 14px;
            padding: 1.2rem 1rem;
            text-align: center;
        }
        .data-highlight .stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: #f7a81b;
            display: block;
        }
        .data-highlight .stat .label {
            font-size: 0.85rem;
            color: #1a4a6a;
            font-weight: 500;
        }