*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f4f8fc;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #1e6f9f;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #f0a030;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0a1f2e;
            margin-bottom: 0.5rem;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.0rem;
            font-weight: 700;
            color: #0d2b3f;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            border-left: 5px solid #f0c040;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1a4a6a;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2a5a7a;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .text-muted {
            color: #5a6a7a;
            font-size: 0.95rem;
        }
        .text-small {
            font-size: 0.85rem;
        }
        .highlight {
            background: #fff7e0;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: #f0c040;
            color: #1a2a3a;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            margin-right: 0.3rem;
        }
        .badge-green {
            background: #2d9e6f;
            color: #fff;
        }
        .badge-blue {
            background: #1e6f9f;
            color: #fff;
        }
        .site-header {
            background: linear-gradient(135deg, #0a1f2e 0%, #1a4a6a 100%);
            padding: 1rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            transition: opacity 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            color: #f0c040;
            font-size: 2rem;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
            color: #f0c040;
        }
        .my-logo span {
            font-weight: 300;
            color: #9fc8e0;
            font-size: 1rem;
            margin-left: 0.3rem;
        }
        .main-nav {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #e0edf5;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.25s;
        }
        .main-nav a:hover {
            background: rgba(240, 192, 64, 0.2);
            color: #f0c040;
            text-decoration: none;
        }
        .main-nav a.active {
            background: #f0c040;
            color: #0a1f2e;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            transition: transform 0.2s;
        }
        .hamburger:hover {
            transform: scale(1.1);
        }
        .nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #e8f0f8;
            padding: 0.7rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0dce8;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #8a9aaa;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #1e6f9f;
        }
        .breadcrumb .current {
            color: #4a5a6a;
            font-weight: 600;
        }
        .hero-section {
            background: linear-gradient(145deg, #e4eef8 0%, #c8dce8 100%);
            padding: 2.5rem 0 2rem;
            border-bottom: 3px solid #f0c040;
        }
        .hero-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: center;
        }
        .hero-text .update-badge {
            display: inline-block;
            background: #0a1f2e;
            color: #f0c040;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .hero-text p {
            font-size: 1.1rem;
            color: #2a4a5a;
        }
        .hero-image {
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            background: #fff;
            padding: 0.5rem;
        }
        .content-area {
            padding: 2.5rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 2.5fr 1fr;
            gap: 2.5rem;
        }
        .main-content {
            background: #fff;
            border-radius: 20px;
            padding: 2rem 2.2rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            background: #fff;
            border-radius: 20px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
            height: fit-content;
            position: sticky;
            top: 90px;
        }
        .sidebar h3 {
            font-size: 1.3rem;
            margin-top: 0;
            border-bottom: 2px solid #e8f0f8;
            padding-bottom: 0.6rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar ul li {
            padding: 0.5rem 0;
            border-bottom: 1px solid #f0f4f8;
        }
        .sidebar ul li a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 500;
        }
        .sidebar ul li a i {
            color: #f0c040;
            width: 1.2rem;
        }
        .code-box {
            background: #0a1f2e;
            color: #e0edf5;
            padding: 1.2rem 1.5rem;
            border-radius: 12px;
            font-family: 'Courier New', monospace;
            font-size: 0.95rem;
            margin: 1.2rem 0;
            overflow-x: auto;
            white-space: pre-wrap;
            word-break: break-word;
            border-left: 4px solid #f0c040;
        }
        .code-box .comment {
            color: #8ab8d0;
        }
        .code-box .keyword {
            color: #f0c040;
            font-weight: 700;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th {
            background: #0a1f2e;
            color: #fff;
            padding: 0.7rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #e0e8f0;
        }
        tr:nth-child(even) {
            background: #f8fafc;
        }
        tr:hover {
            background: #eef4fa;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .feature-card {
            background: #f8fafc;
            border-radius: 16px;
            padding: 1.5rem 1.2rem;
            border: 1px solid #e0e8f0;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
        }
        .feature-card i {
            font-size: 2rem;
            color: #1e6f9f;
            margin-bottom: 0.8rem;
        }
        .feature-card h4 {
            margin-top: 0;
            color: #0a1f2e;
        }
        .interview-block {
            background: #f0f8ff;
            border-radius: 16px;
            padding: 1.8rem;
            border-left: 5px solid #f0c040;
            margin: 2rem 0;
        }
        .interview-block .speaker {
            font-weight: 700;
            color: #0a1f2e;
        }
        .interview-block .speaker i {
            color: #f0c040;
            margin-right: 0.5rem;
        }
        .action-section {
            background: #fff;
            border-radius: 20px;
            padding: 2rem 2.2rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
            margin-top: 2.5rem;
        }
        .action-section h2 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #1a2a3a;
        }
        .form-control {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #d0dce8;
            border-radius: 10px;
            font-size: 1rem;
            transition: border-color 0.2s;
            background: #fafcfe;
        }
        .form-control:focus {
            outline: none;
            border-color: #1e6f9f;
            box-shadow: 0 0 0 3px rgba(30, 111, 159, 0.12);
        }
        textarea.form-control {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #0a1f2e;
            color: #fff;
            padding: 0.7rem 1.8rem;
            border: none;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s;
        }
        .btn:hover {
            background: #1a4a6a;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }
        .btn-gold {
            background: #f0c040;
            color: #0a1f2e;
        }
        .btn-gold:hover {
            background: #e0b030;
            color: #0a1f2e;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #d0d8e0;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating i {
            transition: color 0.2s, transform 0.15s;
        }
        .star-rating i:hover,
        .star-rating i:hover~i {
            color: #f0c040;
            transform: scale(1.1);
        }
        .star-rating .active {
            color: #f0c040;
        }
        .site-footer {
            background: #0a1f2e;
            color: #c0d0e0;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-grid h4 {
            color: #f0c040;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-grid ul {
            list-style: none;
            padding: 0;
        }
        .footer-grid ul li {
            padding: 0.25rem 0;
        }
        .footer-grid ul li a {
            color: #b0c8d8;
        }
        .footer-grid ul li a:hover {
            color: #f0c040;
        }
        friend-link {
            display: block;
            padding: 1rem 0;
            border-top: 1px solid #2a4a5a;
            margin-top: 1rem;
            font-size: 0.9rem;
        }
        friend-link a {
            color: #9fc8e0;
            margin: 0 0.5rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2a4a5a;
            font-size: 0.85rem;
            color: #8a9aaa;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                margin-top: 2rem;
            }
            .hero-wrap {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #0d2b3f;
                padding: 1rem 0;
                border-radius: 0 0 16px 16px;
                margin-top: 0.8rem;
                gap: 0.2rem;
            }
            .main-nav a {
                padding: 0.7rem 1.5rem;
                border-radius: 0;
                width: 100%;
            }
            .main-nav a:hover {
                background: rgba(240, 192, 64, 0.1);
            }
            .hamburger {
                display: block;
            }
            .nav-toggle:checked~.main-nav {
                display: flex;
            }
            .header-inner {
                position: relative;
            }
            .main-content {
                padding: 1.2rem;
            }
            .action-section {
                padding: 1.2rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
                padding-left: 0.7rem;
            }
            .hero-section {
                padding: 1.5rem 0;
            }
            .code-box {
                font-size: 0.8rem;
                padding: 0.8rem 1rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo span {
                font-size: 0.8rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            .btn {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
            .star-rating {
                font-size: 1.5rem;
            }
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .gap-1 {
            gap: 1rem;
        }
        .align-center {
            align-items: center;
        }