*,
        *::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: #f0f4f8;
            color: #1a2634;
            line-height: 1.7;
            padding: 0 16px;
            max-width: 1280px;
            margin: 0 auto;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #0a6e4f;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #064a36;
            text-decoration: underline;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: #0b2b3b;
            margin-top: 1.2em;
            margin-bottom: 0.4em;
            font-weight: 700;
        }
        h1 {
            font-size: 2.2rem;
            border-left: 6px solid #0a6e4f;
            padding-left: 20px;
            margin-top: 0.2em;
        }
        h2 {
            font-size: 1.7rem;
            border-bottom: 2px solid #cbdbe8;
            padding-bottom: 6px;
        }
        h3 {
            font-size: 1.3rem;
            color: #0e4a5e;
        }
        h4 {
            font-size: 1.1rem;
            color: #1a5a6e;
        }
        p {
            margin-bottom: 1.1em;
        }
        ul,
        ol {
            margin: 0.6em 0 1.2em 1.8em;
        }
        li {
            margin-bottom: 0.3em;
        }
        blockquote {
            border-left: 5px solid #0a6e4f;
            background: #e6f0f5;
            padding: 1em 1.4em;
            margin: 1.2em 0;
            border-radius: 0 10px 10px 0;
            font-style: italic;
        }
        hr {
            border: none;
            border-top: 1px solid #cbdbe8;
            margin: 2em 0;
        }
        strong {
            color: #063a2a;
        }
        .container {
            background: #fff;
            border-radius: 24px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            padding: 20px 24px 30px;
            margin: 20px auto 40px;
        }
        @media (max-width: 640px) {
            body {
                padding: 0 8px;
            }
            .container {
                padding: 12px 14px 20px;
                border-radius: 16px;
            }
            h1 {
                font-size: 1.5rem;
                padding-left: 12px;
            }
            h2 {
                font-size: 1.25rem;
            }
            h3 {
                font-size: 1.1rem;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0 8px;
            border-bottom: 2px solid #dce6ed;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #0b2b3b;
            letter-spacing: -0.5px;
            background: linear-gradient(145deg, #0a6e4f, #14967b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none !important;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #0a6e4f;
            font-size: 1.6rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none !important;
        }
        .my-logo small {
            font-size: 0.55rem;
            -webkit-text-fill-color: initial;
            color: #4a6a7a;
            font-weight: 400;
            letter-spacing: 0.3px;
            margin-left: 4px;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 4px 10px;
            flex-wrap: wrap;
            margin: 0;
        }
        .nav-list li a {
            padding: 6px 12px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: #1a3a4a;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-list li a:hover {
            background: #0a6e4f15;
            color: #0a6e4f;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #0b2b3b;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #dce6ed;
        }
        #nav-toggle {
            display: none;
        }
        @media (max-width: 780px) {
            .hamburger {
                display: inline-block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                right: 0;
                background: #fff;
                border-radius: 16px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
                padding: 16px 20px;
                min-width: 220px;
                z-index: 99;
                border: 1px solid #dce6ed;
                gap: 2px;
            }
            .nav-list li a {
                display: block;
                padding: 10px 14px;
                font-size: 1rem;
                border-radius: 10px;
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 10px 0 6px;
            margin: 0 0 10px;
            font-size: 0.85rem;
            color: #5a7a8a;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 10px;
            color: #8aabba;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #0a6e4f;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-wrap {
            background: #e6f0f5;
            border-radius: 60px;
            padding: 4px 4px 4px 20px;
            display: flex;
            align-items: center;
            max-width: 520px;
            margin: 16px 0 24px;
            border: 1px solid #cbdbe8;
            transition: box-shadow 0.3s;
        }
        .search-wrap:focus-within {
            box-shadow: 0 0 0 3px #0a6e4f30;
        }
        .search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 12px 6px 12px 0;
            font-size: 1rem;
            outline: none;
            color: #1a2634;
            min-width: 0;
        }
        .search-wrap button {
            background: #0a6e4f;
            border: none;
            color: #fff;
            padding: 10px 24px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-wrap button:hover {
            background: #064a36;
        }
        .search-wrap button:active {
            transform: scale(0.96);
        }
        @media (max-width: 480px) {
            .search-wrap {
                flex-wrap: wrap;
                border-radius: 20px;
                padding: 6px 6px 6px 14px;
            }
            .search-wrap input {
                padding: 8px 4px;
                font-size: 0.9rem;
            }
            .search-wrap button {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
        }
        .feedback-section {
            background: #f7fafc;
            border-radius: 20px;
            padding: 24px 28px;
            margin: 40px 0 20px;
            border: 1px solid #dce6ed;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .feedback-card h3 {
            margin-top: 0;
            border-bottom: 1px solid #cbdbe8;
            padding-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 12px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 12px 16px;
            border: 1px solid #cbdbe8;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            background: #fff;
            transition: border 0.2s;
            width: 100%;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #0a6e4f;
            outline: none;
            box-shadow: 0 0 0 3px #0a6e4f20;
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #0a6e4f;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card .btn-submit:hover {
            background: #064a36;
        }
        .feedback-card .btn-submit:active {
            transform: scale(0.96);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #cbdbe8;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f5b342;
        }
        @media (max-width: 700px) {
            .feedback-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feedback-section {
                padding: 16px 14px;
            }
        }
        friend-link {
            display: block;
            padding: 20px 0 8px;
            border-top: 2px solid #dce6ed;
            margin-top: 24px;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 16px 4px 0;
            padding: 4px 0;
            color: #0a6e4f;
            font-weight: 500;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding: 24px 0 10px;
            font-size: 0.85rem;
            color: #5a7a8a;
            border-top: 1px solid #dce6ed;
            margin-top: 10px;
        }
        .copyright strong {
            color: #1a3a4a;
        }
        .featured-img {
            margin: 24px 0 28px;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.06);
            background: #dce6ed;
            text-align: center;
        }
        .featured-img img {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
        }
        .featured-img figcaption {
            padding: 10px 16px 14px;
            font-size: 0.9rem;
            color: #3a5a6a;
            background: #f7fafc;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .stat-card {
            background: #f0f6fa;
            border-radius: 16px;
            padding: 18px 12px;
            text-align: center;
            border: 1px solid #dce6ed;
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #0a6e4f;
            display: block;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: #4a6a7a;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0 30px;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
        }
        .data-table th,
        .data-table td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid #dce6ed;
        }
        .data-table th {
            background: #0b2b3b;
            color: #fff;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .data-table tr:nth-child(even) {
            background: #f7fafc;
        }
        .data-table tr:hover {
            background: #e6f0f5;
        }
        @media (max-width: 560px) {
            .data-table {
                font-size: 0.8rem;
            }
            .data-table th,
            .data-table td {
                padding: 8px 10px;
            }
        }
        .flex-between {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .tag {
            display: inline-block;
            background: #e6f0f5;
            padding: 2px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            color: #1a5a6e;
            font-weight: 500;
        }
        .last-updated {
            color: #5a7a8a;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 4px 0 16px;
        }
        .toc {
            background: #f7fafc;
            border-radius: 16px;
            padding: 18px 22px;
            margin: 20px 0 28px;
            border: 1px solid #dce6ed;
        }
        .toc ol {
            margin: 6px 0 0 1.4em;
        }
        .toc a {
            color: #0b2b3b;
        }
        .toc a:hover {
            color: #0a6e4f;
        }
        .anchor-offset {
            scroll-margin-top: 20px;
        }
        .author-badge {
            display: flex;
            align-items: center;
            gap: 14px;
            background: #f0f6fa;
            border-radius: 60px;
            padding: 8px 20px 8px 12px;
            margin: 10px 0 18px;
            border: 1px solid #dce6ed;
            width: fit-content;
        }
        .author-badge i {
            font-size: 2rem;
            color: #0a6e4f;
        }
        .author-badge .auth-name {
            font-weight: 700;
            color: #0b2b3b;
        }
        .author-badge .auth-desc {
            font-size: 0.85rem;
            color: #4a6a7a;
        }