* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --accent: #e67e22;
            --accent-hover: #d35400;
            --bg: #f8f9fa;
            --card: #ffffff;
            --text: #2c3e50;
            --text-light: #6c7a89;
            --border: #e0e4e8;
            --radius: 12px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        header {
            background: linear-gradient(135deg, var(--primary) 0%, #0f2a44 100%);
            color: #fff;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .my-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: #fff;
            font-weight: 800;
            font-size: 1.5rem;
            letter-spacing: -0.5px;
        }
        .my-logo i {
            color: var(--accent);
            font-size: 1.8rem;
        }
        .my-logo span {
            background: linear-gradient(90deg, #f7dc6f, #f39c12);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            opacity: 0.7;
            -webkit-text-fill-color: #ccc;
            margin-left: 4px;
            letter-spacing: 0.3px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        nav a {
            color: #e0e8f0;
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 30px;
            transition: all 0.25s;
            position: relative;
        }
        nav a:hover,
        nav a.active {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .nav-overlay {
            display: none;
        }
        .breadcrumb-wrap {
            background: rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .breadcrumb {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 8px 20px;
            font-size: 0.82rem;
            color: #a0b8d0;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            color: #7ab8e8;
            text-decoration: none;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb span {
            color: #6a8aaa;
        }
        main {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 30px 20px 60px;
        }
        .content-card {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 44px;
            margin-bottom: 40px;
        }
        @media(max-width:640px) {
            .content-card {
                padding: 24px 18px;
            }
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--primary);
        }
        h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .subtitle {
            font-size: 1.1rem;
            color: var(--text-light);
            margin-bottom: 28px;
            border-left: 4px solid var(--accent);
            padding-left: 18px;
        }
        .update-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 40px 0 16px;
            color: var(--primary);
            border-bottom: 3px solid var(--accent);
            padding-bottom: 8px;
        }
        h2:first-of-type {
            margin-top: 10px;
        }
        h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin: 28px 0 10px;
            color: var(--primary-light);
        }
        h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 20px 0 8px;
            color: var(--text);
        }
        p {
            margin-bottom: 16px;
            text-align: justify;
        }
        p strong {
            color: var(--primary);
        }
        ul,
        ol {
            margin: 12px 0 18px 24px;
        }
        li {
            margin-bottom: 6px;
        }
        .highlight-box {
            background: #fdf2e9;
            border-left: 5px solid var(--accent);
            padding: 18px 22px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
        }
        .highlight-box strong {
            color: var(--accent-hover);
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th {
            background: var(--primary);
            color: #fff;
            padding: 12px 14px;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 10px 14px;
            border-bottom: 1px solid var(--border);
        }
        tr:nth-child(even) {
            background: #f4f6f8;
        }
        tr:hover td {
            background: #eef3f7;
        }
        .img-wrapper {
            margin: 28px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.10);
        }
        .img-wrapper img {
            width: 100%;
            height: auto;
            display: block;
        }
        .img-caption {
            background: var(--primary);
            color: #ddd;
            font-size: 0.82rem;
            padding: 8px 16px;
            text-align: center;
            font-style: italic;
        }
        .btn {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 10px 28px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.25s;
            border: none;
            cursor: pointer;
        }
        .btn:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(230, 126, 34, 0.35);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--accent);
            color: var(--accent);
        }
        .btn-outline:hover {
            background: var(--accent);
            color: #fff;
        }
        .search-section {
            background: linear-gradient(135deg, #eef4fb, #f8f4ee);
            border-radius: var(--radius);
            padding: 28px 32px;
            margin: 30px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
        }
        .search-section label {
            font-weight: 600;
            color: var(--primary);
            font-size: 1.05rem;
        }
        .search-section form {
            flex: 1;
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            min-width: 240px;
        }
        .search-section input[type="text"] {
            flex: 1;
            padding: 10px 18px;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
            min-width: 180px;
        }
        .search-section input[type="text"]:focus {
            border-color: var(--accent);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 30px 0 20px;
        }
        @media(max-width:720px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: #f4f7fc;
            border-radius: var(--radius);
            padding: 24px 28px;
            border: 1px solid var(--border);
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.15rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 10px;
        }
        .feedback-card textarea,
        .feedback-card input[type="number"],
        .feedback-card input[type="text"] {
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: var(--font);
            outline: none;
            transition: border 0.25s;
            resize: vertical;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus {
            border-color: var(--accent);
        }
        .feedback-card textarea {
            min-height: 80px;
        }
        .star-rating {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #ddd;
            cursor: pointer;
        }
        .star-rating i.active {
            color: #f1c40f;
        }
        .star-rating i:hover {
            color: #f39c12;
        }
        .inline-link {
            color: var(--accent-hover);
            font-weight: 600;
            text-decoration: none;
            border-bottom: 1px dashed var(--accent);
            transition: all 0.2s;
        }
        .inline-link:hover {
            color: var(--primary);
            border-bottom-style: solid;
        }
        footer {
            background: var(--primary);
            color: #c8d8e8;
            padding: 40px 20px 24px;
            margin-top: 20px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
        }
        @media(max-width:780px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-inner h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 6px;
            display: inline-block;
        }
        .footer-inner p,
        .footer-inner a {
            font-size: 0.9rem;
            color: #b0c8e0;
            text-decoration: none;
            display: block;
            margin-bottom: 4px;
        }
        .footer-inner a:hover {
            color: #fff;
        }
        friend-link {
            display: block;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.9rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 14px;
            margin-bottom: 6px;
            color: #7ab8e8;
        }
        friend-link a:hover {
            color: #fff;
        }
        .copyright {
            max-width: var(--max-width);
            margin: 20px auto 0;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.8rem;
            color: #7a9abb;
            text-align: center;
        }
        @media(max-width:800px) {
            .header-inner {
                height: 58px;
                padding: 0 14px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo small {
                display: none;
            }
            nav {
                position: fixed;
                top: 0;
                right: -280px;
                width: 260px;
                height: 100vh;
                background: var(--primary);
                flex-direction: column;
                align-items: stretch;
                padding: 70px 20px 30px;
                gap: 4px;
                transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                box-shadow: -8px 0 30px rgba(0, 0, 0, 0.3);
                z-index: 2000;
            }
            nav.open {
                right: 0;
            }
            nav a {
                font-size: 1rem;
                padding: 12px 16px;
                border-radius: 8px;
            }
            .hamburger {
                display: block;
                z-index: 3000;
            }
            .nav-overlay {
                display: block;
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0, 0, 0, 0.45);
                z-index: 1500;
                opacity: 0;
                pointer-events: none;
                transition: opacity 0.35s;
            }
            .nav-overlay.show {
                opacity: 1;
                pointer-events: all;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .content-card {
                padding: 20px 14px;
            }
        }
        @media(max-width:480px) {
            .feedback-card {
                padding: 16px;
            }
            .search-section {
                padding: 18px;
            }
            .search-section form {
                flex-direction: column;
            }
            .breadcrumb {
                font-size: 0.72rem;
                padding: 6px 12px;
            }
            .table-wrap table {
                font-size: 0.8rem;
            }
            th,
            td {
                padding: 6px 8px;
            }
        }
        .anchor-offset {
            scroll-margin-top: 80px;
        }
        .text-accent {
            color: var(--accent);
        }
        .fw-700 {
            font-weight: 700;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mb-8 {
            margin-bottom: 8px;
        }
        .gap-4 {
            gap: 4px;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .align-center {
            align-items: center;
        }