* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f4f7fb;
            color: #1e2a3a;
            line-height: 1.7;
            font-size: 1.05rem;
            padding: 0 1rem;
        }
        .wrapper {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.04);
            border-radius: 28px;
            padding: 1.8rem 2.2rem;
            margin-top: 1.2rem;
            margin-bottom: 2rem;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 1.2rem;
            border-bottom: 2px solid #e9edf4;
            margin-bottom: 1.2rem;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            background: linear-gradient(145deg, #0d2b4e, #2b5a7a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo i {
            background: #0d2b4e;
            -webkit-text-fill-color: #fff;
            background-clip: unset;
            padding: 0.3rem 0.5rem;
            border-radius: 12px;
            font-size: 1.3rem;
            color: #fff;
        }
        .my-logo span {
            font-weight: 300;
            color: #4a6f8c;
            -webkit-text-fill-color: #4a6f8c;
            font-size: 0.9rem;
            letter-spacing: 0.3px;
            margin-left: 0.2rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1e2a3a;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 10px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #eef3f9;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 1.2rem;
            align-items: center;
        }
        .main-nav a {
            text-decoration: none;
            color: #2c4056;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: #0d6b9e;
            border-bottom-color: #0d6b9e;
        }
        .main-nav a i {
            font-size: 0.8rem;
            opacity: 0.7;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem 0.6rem;
            font-size: 0.85rem;
            color: #6b7f94;
            margin-bottom: 1.6rem;
            padding: 0.3rem 0;
        }
        .breadcrumb a {
            color: #3b6a8a;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb i {
            font-size: 0.6rem;
            color: #9aafc4;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0a1f31;
            margin-bottom: 0.8rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin-top: 2.4rem;
            margin-bottom: 1rem;
            color: #11324b;
            border-left: 5px solid #2b7a9e;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin-top: 1.8rem;
            margin-bottom: 0.7rem;
            color: #1e4a66;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-top: 1.4rem;
            margin-bottom: 0.4rem;
            color: #2c5f7a;
        }
        p {
            margin-bottom: 1.2rem;
            color: #253746;
        }
        .img-wrapper {
            margin: 1.8rem 0;
            border-radius: 20px;
            overflow: hidden;
            background: #eef3f9;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
        }
        .img-wrapper img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }
        .img-wrapper figcaption {
            padding: 0.8rem 1.2rem;
            font-size: 0.9rem;
            color: #4b6a82;
            background: #f8fafd;
            border-top: 1px solid #e2e9f2;
        }
        .highlight-box {
            background: #f0f7fe;
            border-left: 5px solid #2b7a9e;
            padding: 1.4rem 1.8rem;
            border-radius: 14px;
            margin: 1.6rem 0;
        }
        .highlight-box strong {
            color: #0d4b6e;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.2rem;
            margin: 1.6rem 0;
        }
        .stat-card {
            background: #f2f6fc;
            padding: 1.2rem 1rem;
            border-radius: 16px;
            text-align: center;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
            transition: 0.2s;
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.06);
        }
        .stat-card .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #0d4b6e;
            display: block;
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: #4f6f8a;
        }
        .btn {
            display: inline-block;
            background: #1a5e7e;
            color: #fff;
            padding: 0.6rem 1.4rem;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 500;
            transition: 0.2s;
            border: none;
            cursor: pointer;
            font-size: 0.95rem;
        }
        .btn:hover {
            background: #0d4b6e;
            transform: scale(1.02);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid #1a5e7e;
            color: #1a5e7e;
        }
        .btn-outline:hover {
            background: #1a5e7e;
            color: #fff;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.8rem 1.6rem;
            margin: 1.2rem 0;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            padding: 0.4rem 0;
        }
        .feature-list li i {
            color: #1a7a4a;
            font-size: 1.1rem;
            margin-top: 0.2rem;
        }
        blockquote {
            background: #f6faff;
            border-left: 6px solid #2b7a9e;
            padding: 1.2rem 1.8rem;
            margin: 1.6rem 0;
            border-radius: 0 16px 16px 0;
            font-style: italic;
            color: #1a3a4e;
        }
        blockquote cite {
            display: block;
            margin-top: 0.6rem;
            font-style: normal;
            font-weight: 600;
            color: #0d4b6e;
        }
        .interview-box {
            background: #f6faff;
            border-radius: 18px;
            padding: 1.8rem;
            margin: 1.8rem 0;
            border: 1px solid #dee9f2;
        }
        .interview-box .q {
            font-weight: 700;
            color: #0a2f44;
        }
        .interview-box .a {
            margin-bottom: 1.2rem;
            padding-left: 0.5rem;
        }
        .faq-item {
            border-bottom: 1px solid #e6edf5;
            padding: 0.9rem 0;
        }
        .faq-item strong {
            display: block;
            font-size: 1.05rem;
            color: #0a2f44;
        }
        .faq-item p {
            margin: 0.3rem 0 0 0;
        }
        .search-section {
            background: #f2f8fd;
            padding: 1.6rem 2rem;
            border-radius: 20px;
            margin: 2.2rem 0;
        }
        .search-section form {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            align-items: center;
        }
        .search-section input[type="text"] {
            flex: 1 1 240px;
            padding: 0.8rem 1.2rem;
            border: 2px solid #d6e2ee;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: 0.2s;
            background: #fff;
        }
        .search-section input[type="text"]:focus {
            border-color: #1a5e7e;
            box-shadow: 0 0 0 4px rgba(26, 94, 126, 0.1);
        }
        .search-section button {
            padding: 0.8rem 1.8rem;
            border: none;
            background: #1a5e7e;
            color: #fff;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            font-size: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-section button:hover {
            background: #0d4b6e;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2rem 0;
        }
        .feedback-card {
            background: #f8fafd;
            padding: 1.6rem 1.8rem;
            border-radius: 20px;
            border: 1px solid #e6edf5;
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .feedback-card textarea,
        .feedback-card input,
        .feedback-card select {
            padding: 0.7rem 1rem;
            border: 2px solid #dbe4ee;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: 0.2s;
            background: #fff;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus,
        .feedback-card select:focus {
            border-color: #1a5e7e;
            box-shadow: 0 0 0 3px rgba(26, 94, 126, 0.08);
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .feedback-card .star-rating input {
            display: none;
        }
        .feedback-card .star-rating label {
            font-size: 1.8rem;
            color: #d0dce8;
            cursor: pointer;
            transition: 0.15s;
        }
        .feedback-card .star-rating label:hover,
        .feedback-card .star-rating label:hover~label,
        .feedback-card .star-rating input:checked~label {
            color: #f5b342;
        }
        .btn-submit {
            background: #1a5e7e;
            color: #fff;
            padding: 0.7rem 1.6rem;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            font-size: 1rem;
            align-self: flex-start;
        }
        .btn-submit:hover {
            background: #0d4b6e;
        }
        friend-link {
            display: block;
            padding: 1.4rem 0;
            border-top: 2px solid #e2e9f2;
            margin-top: 1.8rem;
            font-size: 0.95rem;
        }
        friend-link a {
            color: #1a5e7e;
            text-decoration: none;
            margin: 0 0.6rem 0.4rem 0;
            display: inline-block;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .footer-copy {
            text-align: center;
            padding: 1.2rem 0 0.4rem;
            font-size: 0.85rem;
            color: #6b7f94;
            border-top: 1px solid #e6edf5;
            margin-top: 1rem;
        }
        .footer-copy a {
            color: #1a5e7e;
            text-decoration: none;
        }
        @media (max-width: 768px) {
            .wrapper {
                padding: 1rem 1.2rem;
                border-radius: 18px;
                margin-top: 0.6rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 0.8rem 0 0.4rem;
                gap: 0.2rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.5rem 0;
                border-bottom: none;
                width: 100%;
            }
            .feature-list {
                grid-template-columns: 1fr;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .search-section form {
                flex-direction: column;
            }
            .search-section input[type="text"] {
                width: 100%;
                flex: unset;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .stat-grid {
                grid-template-columns: 1fr;
            }
            .wrapper {
                padding: 0.8rem 0.9rem;
            }
            h1 {
                font-size: 1.6rem;
            }
        }
        .last-updated {
            display: inline-block;
            background: #eef3f9;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #4b6a82;
            margin-bottom: 1rem;
        }
        a {
            color: #1a6a8e;
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        a:hover {
            color: #0a3f5a;
        }
        .toc {
            background: #f6faff;
            padding: 1.2rem 1.8rem;
            border-radius: 18px;
            margin: 1.2rem 0 2rem;
        }
        .toc ul {
            list-style: none;
            padding-left: 0.5rem;
        }
        .toc li {
            padding: 0.2rem 0;
        }
        .toc a {
            text-decoration: none;
        }
        .toc a:hover {
            text-decoration: underline;
        }