*,
        *::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: #f5f7fc;
            color: #1e1e2f;
            line-height: 1.75;
            padding: 0;
            margin: 0;
        }
        a {
            color: #1a4c8a;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e85d2c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.4rem;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
            color: #0b1e33;
        }
        h1 {
            font-size: 2.2rem;
            border-left: 6px solid #e85d2c;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.7rem;
            border-bottom: 2px solid #d0d9e8;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.3rem;
            color: #1f4a7a;
        }
        h4 {
            font-size: 1.1rem;
            color: #2d5f3b;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0b1e33 0%, #1a3a5c 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            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: 0.8rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            color: #e85d2c;
            font-size: 2rem;
        }
        .my-logo:hover {
            color: #f0c75e;
            text-decoration: none;
        }
        .my-logo span {
            font-weight: 300;
            font-size: 0.9rem;
            opacity: 0.8;
            display: block;
            font-style: italic;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .nav-list a {
            color: #eef4ff;
            padding: 0.5rem 0.9rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
            display: block;
        }
        .nav-list a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #f0c75e;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            font-size: 1.6rem;
            padding: 0.3rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #eaeef6;
            padding: 0.5rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d5dce8;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            gap: 0.3rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.5rem;
            color: #7a8aa0;
        }
        .breadcrumb a {
            color: #1a4c8a;
        }
        .breadcrumb .current {
            color: #5a6a7e;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(145deg, #0f2a44, #1b4a6e);
            color: #fff;
            padding: 3rem 0 2.5rem;
            border-radius: 0 0 40px 40px;
            margin-bottom: 2rem;
        }
        .hero h1 {
            color: #fff;
            border-left-color: #f0c75e;
            font-size: 2.5rem;
            margin-top: 0;
        }
        .hero p {
            font-size: 1.15rem;
            opacity: 0.9;
            max-width: 780px;
        }
        .hero .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 1.2rem;
            font-size: 0.9rem;
            color: #cddcef;
        }
        .hero .meta-info i {
            margin-right: 0.4rem;
            color: #f0c75e;
        }
        .search-section {
            background: #fff;
            border-radius: 20px;
            padding: 1.5rem 2rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            margin-bottom: 2.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
        }
        .search-section form {
            display: flex;
            flex: 1 1 300px;
            gap: 0.5rem;
        }
        .search-section input[type="text"] {
            flex: 1;
            padding: 0.7rem 1.2rem;
            border: 2px solid #d5dce8;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-section input[type="text"]:focus {
            border-color: #1a4c8a;
        }
        .search-section button {
            background: #1a4c8a;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-section button:hover {
            background: #e85d2c;
            transform: scale(1.02);
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        .main-content {
            background: #fff;
            border-radius: 24px;
            padding: 2rem 2.2rem;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.04);
        }
        .sidebar {
            background: #fff;
            border-radius: 24px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.04);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            margin-top: 0;
            font-size: 1.2rem;
            border-bottom: 2px solid #e85d2c;
            padding-bottom: 0.4rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #edf0f5;
        }
        .sidebar li a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.9rem;
        }
        .sidebar li a i {
            color: #e85d2c;
            width: 1.2rem;
        }
        .featured-img {
            margin: 1.8rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
        }
        .featured-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .featured-img figcaption {
            background: #f0f4fa;
            padding: 0.7rem 1.2rem;
            font-size: 0.85rem;
            color: #3a4a5e;
            font-style: italic;
        }
        .feedback-section {
            background: #f9faff;
            border-radius: 20px;
            padding: 2rem;
            margin-top: 2.5rem;
            border: 1px solid #e6ebf4;
        }
        .feedback-section h3 {
            margin-top: 0;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin-top: 1.2rem;
        }
        .feedback-card {
            background: #fff;
            padding: 1.5rem;
            border-radius: 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 0.7rem 1rem;
            border: 2px solid #dce2ec;
            border-radius: 12px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
            width: 100%;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #1a4c8a;
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #1a4c8a;
            color: #fff;
            border: none;
            padding: 0.7rem 1.4rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            align-self: flex-start;
        }
        .feedback-card .btn-submit:hover {
            background: #e85d2c;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #d0d5e0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5b342;
        }
        footer {
            background: #0b1e33;
            color: #cbd8e8;
            padding: 2.5rem 0 1.5rem;
            border-radius: 40px 40px 0 0;
            margin-top: 3rem;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        footer h4 {
            color: #f0c75e;
            margin-top: 0;
            font-size: 1.1rem;
        }
        footer a {
            color: #b0c8e0;
        }
        footer a:hover {
            color: #f0c75e;
        }
        friend-link {
            display: block;
            margin: 1.2rem 0 0.8rem;
            padding: 1rem 0;
            border-top: 1px solid #2a4560;
            font-size: 0.9rem;
        }
        friend-link a {
            margin: 0 0.8rem 0 0;
            display: inline-block;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2a4560;
            font-size: 0.85rem;
            color: #8aa0b8;
        }
        @media (max-width: 900px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            footer .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 700px) {
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0b1e33;
                padding: 0.8rem 0;
                border-radius: 0 0 20px 20px;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                padding: 0.7rem 1.5rem;
                border-radius: 0;
            }
            .hamburger {
                display: block;
            }
            .header-inner {
                position: relative;
            }
            .main-content {
                padding: 1.2rem;
            }
            .search-section {
                padding: 1rem;
            }
            .search-section form {
                flex-direction: column;
            }
            .hero {
                padding: 2rem 0 1.5rem;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
        }
        @media (min-width: 701px) {
            .nav-list {
                display: flex !important;
            }
        }
        .text-highlight {
            background: linear-gradient(to right, #fef3e0, #fde8c8);
            padding: 0.1rem 0.4rem;
            border-radius: 6px;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: #e85d2c;
            color: #fff;
            font-size: 0.7rem;
            padding: 0.2rem 0.7rem;
            border-radius: 30px;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        .spacer {
            height: 1.5rem;
        }
        .table-wrap {
            overflow-x: auto;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0;
            font-size: 0.9rem;
        }
        th,
        td {
            padding: 0.6rem 0.8rem;
            border: 1px solid #dce2ec;
            text-align: left;
        }
        th {
            background: #eaf0f8;
            font-weight: 700;
        }
        .btn-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #1a4c8a;
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            transition: 0.25s;
            border: none;
            cursor: pointer;
            z-index: 50;
        }
        .btn-top:hover {
            background: #e85d2c;
            transform: translateY(-3px);
        }
        .schema-hidden {
            display: none;
        }