*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #f4f8fc;
            color: #1a2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #1a6b8a;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #f0b429;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
            color: #0a1f2e;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.2rem;
        }
        h2 {
            font-size: 1.6rem;
            border-bottom: 3px solid #f0b429;
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        h3 {
            font-size: 1.25rem;
            color: #1a4a5e;
        }
        h4 {
            font-size: 1.05rem;
            color: #2a5a6e;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(145deg, #0a1f2e 0%, #0f2d42 100%);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f0b429;
            text-shadow: 0 2px 8px rgba(240, 180, 41, 0.3);
            transition: transform 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #fcd34d;
        }
        .my-logo i {
            font-size: 1.7rem;
            color: #4fc3f7;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-size: 1.6rem;
            padding: 0.3rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-menu {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.2rem 1rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .nav-menu li a {
            color: #e8f0f8;
            font-weight: 500;
            padding: 0.3rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
            font-size: 0.95rem;
            white-space: nowrap;
        }
        .nav-menu li a:hover {
            color: #f0b429;
            border-bottom-color: #f0b429;
            text-decoration: none;
        }
        .breadcrumb {
            background: #eaf0f6;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d0dce8;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #7a8a9a;
        }
        .breadcrumb a {
            color: #1a6b8a;
        }
        .breadcrumb .current {
            color: #4a5a6a;
            font-weight: 500;
        }
        .main-content {
            padding: 2rem 0 3rem;
        }
        .intro-banner {
            background: linear-gradient(135deg, #e8f4fc 0%, #d4e8f4 100%);
            border-radius: 16px;
            padding: 1.8rem 2rem;
            margin-bottom: 2.5rem;
            border-left: 6px solid #f0b429;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .intro-banner p {
            font-size: 1.1rem;
            margin-bottom: 0.3rem;
        }
        .badge {
            display: inline-block;
            background: #0a1f2e;
            color: #f0b429;
            font-weight: 600;
            font-size: 0.75rem;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }
        .last-updated {
            color: #5a6a7a;
            font-size: 0.85rem;
            margin-bottom: 0.8rem;
            display: block;
        }
        .last-updated i {
            margin-right: 0.3rem;
        }
        .code-table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0 2rem;
            border-radius: 12px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
        }
        .code-table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            font-size: 0.95rem;
            min-width: 580px;
        }
        .code-table th {
            background: #0a1f2e;
            color: #f0b429;
            font-weight: 600;
            padding: 0.9rem 1rem;
            text-align: left;
        }
        .code-table td {
            padding: 0.8rem 1rem;
            border-bottom: 1px solid #e8edf2;
        }
        .code-table tr:hover td {
            background: #f6fafe;
        }
        .code-table .code-value {
            font-family: 'Courier New', monospace;
            font-weight: 700;
            color: #1a6b8a;
            background: #eef4f8;
            padding: 0.15rem 0.6rem;
            border-radius: 6px;
            display: inline-block;
        }
        .code-table .status-active {
            color: #0a8a3a;
            font-weight: 600;
        }
        .code-table .status-expired {
            color: #b33a3a;
        }
        .btn-copy {
            background: #1a6b8a;
            color: #fff;
            border: none;
            padding: 0.25rem 1rem;
            border-radius: 6px;
            font-size: 0.75rem;
            cursor: pointer;
            transition: background 0.2s;
        }
        .btn-copy:hover {
            background: #0a4a6a;
        }
        .step-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.5rem 1.8rem;
            margin-bottom: 1.2rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            border-left: 4px solid #4fc3f7;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .step-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.07);
        }
        .step-card .step-num {
            display: inline-block;
            background: #f0b429;
            color: #0a1f2e;
            font-weight: 800;
            width: 32px;
            height: 32px;
            text-align: center;
            line-height: 32px;
            border-radius: 50%;
            margin-right: 0.6rem;
            font-size: 0.9rem;
        }
        .interview-block {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            margin: 2rem 0;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e0e8f0;
        }
        .interview-block .quote {
            font-style: italic;
            font-size: 1.05rem;
            border-left: 4px solid #f0b429;
            padding-left: 1.2rem;
            margin: 0.8rem 0;
            color: #2a4a5a;
        }
        .interview-block .speaker {
            font-weight: 700;
            color: #0a1f2e;
        }
        .featured-img-wrap {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            position: relative;
        }
        .featured-img-wrap img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
        }
        .featured-img-wrap .img-caption {
            background: rgba(10, 31, 46, 0.75);
            color: #f0f8ff;
            padding: 0.6rem 1.2rem;
            font-size: 0.85rem;
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
        }
        .search-section {
            background: linear-gradient(135deg, #0a1f2e 0%, #1a3a4e 100%);
            border-radius: 16px;
            padding: 2rem 2.2rem;
            margin: 2.5rem 0;
            color: #fff;
        }
        .search-section h2 {
            color: #f0b429;
            border-bottom-color: rgba(240, 180, 41, 0.4);
            margin-top: 0;
        }
        .search-form {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
            margin-top: 1rem;
        }
        .search-form input {
            flex: 1;
            min-width: 180px;
            padding: 0.8rem 1.2rem;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            background: #fff;
            color: #1a2a3a;
            outline: none;
            transition: box-shadow 0.2s;
        }
        .search-form input:focus {
            box-shadow: 0 0 0 4px rgba(240, 180, 41, 0.35);
        }
        .search-form button {
            background: #f0b429;
            color: #0a1f2e;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #fcd34d;
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.5rem 0;
        }
        @media (max-width: 720px) {
            .feedback-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        .feedback-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8edf2;
        }
        .feedback-card h2 {
            margin-top: 0;
            font-size: 1.3rem;
            border-bottom: 2px solid #e0e8f0;
            display: block;
            padding-bottom: 0.5rem;
        }
        .feedback-card label {
            font-weight: 600;
            display: block;
            margin-top: 1rem;
            margin-bottom: 0.3rem;
            color: #1a3a4a;
        }
        .feedback-card input,
        .feedback-card textarea {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dce4ec;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border-color 0.2s;
            background: #fafcfe;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus {
            border-color: #4fc3f7;
            outline: none;
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #1a6b8a;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            margin-top: 1rem;
            transition: background 0.2s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .feedback-card .btn-submit:hover {
            background: #0f4a6a;
            transform: translateY(-1px);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            margin-top: 0.3rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #d0d8e0;
            cursor: pointer;
            transition: color 0.15s, transform 0.1s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f0b429;
            transform: scale(1.05);
        }
        .faq-item {
            background: #fff;
            border-radius: 12px;
            padding: 1.2rem 1.6rem;
            margin-bottom: 0.8rem;
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.03);
            border: 1px solid #e8edf2;
        }
        .faq-item h4 {
            margin: 0 0 0.3rem;
            font-size: 1.05rem;
            color: #0a1f2e;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-item h4::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 0.8rem;
            color: #7a8a9a;
            transition: transform 0.2s;
        }
        .faq-item h4.open::after {
            transform: rotate(180deg);
        }
        .faq-item p {
            margin: 0.4rem 0 0;
            color: #3a4a5a;
        }
        friend-link {
            display: block;
            padding: 1.5rem 0 0.8rem;
        }
        friend-link .fl-title {
            font-weight: 700;
            font-size: 1.1rem;
            color: #0a1f2e;
            margin-bottom: 0.8rem;
        }
        friend-link .fl-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.5rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        friend-link .fl-list li a {
            color: #1a6b8a;
            font-size: 0.92rem;
        }
        friend-link .fl-list li a:hover {
            color: #f0b429;
        }
        .site-footer {
            background: #0a1f2e;
            color: #b0c8d8;
            padding: 2rem 0 1.5rem;
            margin-top: 2rem;
            border-top: 4px solid #f0b429;
        }
        .site-footer .copyright {
            text-align: center;
            font-size: 0.85rem;
            color: #7a9aae;
            margin-top: 1.2rem;
            padding-top: 1rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .copyright a {
            color: #f0b429;
        }
        @media (max-width: 780px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 0 0.4rem;
                gap: 0.6rem 0;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                white-space: normal;
                font-size: 1rem;
                padding: 0.4rem 0;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            .intro-banner {
                padding: 1.2rem 1.2rem;
            }
            .search-section {
                padding: 1.5rem 1.2rem;
            }
            .feedback-card {
                padding: 1.2rem 1.2rem;
            }
            .step-card {
                padding: 1.2rem 1.2rem;
            }
            .interview-block {
                padding: 1.2rem 1.2rem;
            }
            .code-table {
                font-size: 0.85rem;
            }
            .code-table th,
            .code-table td {
                padding: 0.6rem 0.6rem;
            }
        }
        @media (max-width: 480px) {
            .header-inner {
                gap: 0.4rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo i {
                font-size: 1.2rem;
            }
            .search-form input {
                min-width: 120px;
                font-size: 0.9rem;
            }
            .search-form button {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
            .star-rating label {
                font-size: 1.6rem;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 1.5rem;
            background: #f0b429;
            color: #0a1f2e;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
            cursor: pointer;
            transition: transform 0.2s, background 0.2s;
            z-index: 50;
            border: none;
            opacity: 0.85;
        }
        .scroll-top:hover {
            transform: translateY(-4px);
            background: #fcd34d;
            opacity: 1;
        }
        .section-reveal {
            animation: fadeUp 0.6s ease both;
        }
        @keyframes fadeUp {
            0% {
                opacity: 0;
                transform: translateY(24px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }