* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f4f7fa;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0 16px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            border-radius: 24px;
            padding: 24px 32px;
            margin-top: 24px;
            margin-bottom: 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 16px 12px;
                border-radius: 16px;
                margin-top: 12px;
                margin-bottom: 12px;
            }
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 12px;
            border-bottom: 2px solid #e8edf3;
            position: relative;
        }
        .my-logo {
            font-size: 28px;
            font-weight: 800;
            text-decoration: none;
            color: #0f2b4b;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #1a4a7a, #2d7fb9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo i {
            -webkit-text-fill-color: #1a4a7a;
            margin-right: 6px;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 28px;
            color: #1e2a3a;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #e8edf3;
        }
        nav {
            display: flex;
            gap: 8px 20px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            text-decoration: none;
            color: #1e2a3a;
            font-weight: 500;
            font-size: 15px;
            padding: 6px 12px;
            border-radius: 40px;
            transition: background 0.2s, color 0.2s;
        }
        nav a:hover,
        nav a.active {
            background: #eef3f9;
            color: #0f2b4b;
        }
        .hamburger-show {
            display: flex !important;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 12px;
                gap: 4px;
            }
            nav a {
                padding: 10px 14px;
                border-radius: 12px;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px 10px;
            font-size: 14px;
            color: #5a6f82;
            padding: 12px 0 8px;
            border-bottom: 1px solid #eef3f9;
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: #2d7fb9;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb i {
            font-size: 12px;
            color: #8a9aa8;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0a1e33;
            margin-top: 8px;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #0f2b4b;
            margin-top: 40px;
            margin-bottom: 16px;
            border-left: 5px solid #2d7fb9;
            padding-left: 18px;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #1a3a5a;
            margin-top: 28px;
            margin-bottom: 10px;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #2a4a6a;
            margin-top: 20px;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 16px;
            font-size: 1.05rem;
            color: #1e2e42;
        }
        .lead {
            font-size: 1.2rem;
            color: #2a4a6a;
            font-weight: 400;
            background: #f0f6fe;
            padding: 20px 24px;
            border-radius: 16px;
            border-left: 4px solid #2d7fb9;
        }
        .featured-img {
            width: 100%;
            max-width: 820px;
            height: auto;
            border-radius: 20px;
            margin: 24px 0 20px;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
            display: block;
        }
        ul,
        ol {
            margin: 12px 0 20px 24px;
            font-size: 1.05rem;
            color: #1e2e42;
        }
        li {
            margin-bottom: 6px;
        }
        .highlight-box {
            background: #f0f7fe;
            border-radius: 16px;
            padding: 20px 24px;
            margin: 20px 0;
            border: 1px solid #dce8f2;
        }
        .highlight-box strong {
            color: #0f2b4b;
        }
        .badge {
            display: inline-block;
            background: #2d7fb9;
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 2px 14px;
            border-radius: 40px;
            letter-spacing: 0.3px;
        }
        .rating-stars {
            color: #f5b342;
            font-size: 1.2rem;
            letter-spacing: 2px;
        }
        .form-section {
            background: #f8faff;
            border-radius: 20px;
            padding: 24px 28px;
            margin: 32px 0;
            border: 1px solid #e4edf6;
        }
        .form-section h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 15px;
            color: #1a3a5a;
            margin-bottom: 4px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border-radius: 12px;
            border: 1.5px solid #d0dce8;
            font-size: 16px;
            font-family: inherit;
            background: #fff;
            transition: border 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #2d7fb9;
            outline: none;
            box-shadow: 0 0 0 3px rgba(45, 127, 185, 0.15);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #1a4a7a;
            color: #fff;
            padding: 12px 32px;
            border: none;
            border-radius: 40px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:hover {
            background: #0f2b4b;
            transform: scale(1.02);
        }
        .btn-secondary {
            background: #e8edf3;
            color: #1e2a3a;
        }
        .btn-secondary:hover {
            background: #d0dce8;
        }
        friend-link {
            display: block;
            padding: 20px 0 12px;
            border-top: 2px solid #e8edf3;
            margin-top: 24px;
        }
        friend-link a {
            color: #2d7fb9;
            text-decoration: none;
            margin: 0 12px 8px 0;
            display: inline-block;
            font-weight: 500;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        footer {
            padding: 20px 0 16px;
            border-top: 1px solid #e8edf3;
            margin-top: 16px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 14px;
            color: #5a6f82;
        }
        footer .copy {
            font-weight: 500;
        }
        .schema-hidden {
            display: none;
        }
        @media (max-width: 600px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 12px 10px;
            }
            .form-section {
                padding: 16px;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        a {
            color: #2d7fb9;
        }
        a:hover {
            color: #0f2b4b;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid #e4edf6;
        }
        th {
            background: #f0f6fe;
            font-weight: 600;
            color: #0f2b4b;
        }
        tr:hover td {
            background: #f8faff;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 20px 0;
        }
        @media (max-width: 640px) {
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }
        .card {
            background: #f9fcff;
            border-radius: 16px;
            padding: 20px;
            border: 1px solid #e4edf6;
        }
        .card i {
            color: #2d7fb9;
            margin-right: 6px;
        }
        .emoji-lg {
            font-size: 1.8rem;
            margin-right: 6px;
        }
        .scroll-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            background: #1a4a7a;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
            transition: background 0.2s, transform 0.2s;
            cursor: pointer;
            border: none;
            z-index: 99;
        }
        .scroll-top:hover {
            background: #0f2b4b;
            transform: translateY(-4px);
        }
        @media (max-width: 600px) {
            .scroll-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 16px;
            }
        }
        .interview {
            background: #f4f9ff;
            border-radius: 20px;
            padding: 24px 28px;
            margin: 24px 0;
            border-left: 5px solid #2d7fb9;
        }
        .interview .author {
            font-weight: 700;
            color: #0f2b4b;
        }
        .interview .role {
            color: #5a6f82;
            font-size: 14px;
        }