*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f4f7f5;
            color: #1a2e2a;
            line-height: 1.75;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }
        a {
            color: #0f6b4f;
            text-decoration: none;
            transition: color .2s;
        }
        a:hover {
            color: #e6a817;
            text-decoration: underline;
        }
        .site-header {
            background: linear-gradient(135deg, #0b3d2e, #145a43);
            color: #fff;
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, .3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }
        .my-logo {
            font-size: 26px;
            font-weight: 900;
            color: #f0c040;
            background: rgba(255, 255, 255, .1);
            padding: 4px 14px;
            border-radius: 30px;
            border: 2px solid #f0c040;
            letter-spacing: 1.5px;
            white-space: nowrap;
        }
        .my-logo:hover {
            background: rgba(255, 255, 255, .25);
            text-decoration: none;
            color: #ffd966;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: #fff;
            border-radius: 30px;
            padding: 4px 6px;
        }
        .header-search input {
            border: none;
            outline: none;
            padding: 6px 10px;
            font-size: 14px;
            border-radius: 30px;
            width: 160px;
            background: transparent;
        }
        .header-search button {
            background: #e6a817;
            border: none;
            color: #0b3d2e;
            border-radius: 50%;
            width: 32px;
            height: 32px;
            cursor: pointer;
            font-size: 14px;
        }
        .hamburger {
            background: transparent;
            border: 2px solid #f0c040;
            color: #f0c040;
            border-radius: 8px;
            font-size: 18px;
            padding: 6px 12px;
            cursor: pointer;
            display: none;
        }
        .main-nav {
            background: #082b20;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 4px;
            padding: 0;
        }
        .main-nav li a {
            display: block;
            color: #d5e8df;
            padding: 12px 16px;
            font-weight: 600;
            font-size: 14px;
            border-radius: 4px;
            transition: background .2s;
        }
        .main-nav li a:hover,
        .main-nav li a.active {
            background: #0f6b4f;
            color: #fff;
            text-decoration: none;
        }
        .breadcrumb {
            padding: 10px 0;
            font-size: 13px;
            color: #6b7f77;
            background: #edf2ef;
        }
        .breadcrumb a {
            color: #0f6b4f;
        }
        .breadcrumb .sep {
            margin: 0 6px;
            color: #aaa;
        }
        .page-wrap {
            display: grid;
            grid-template-columns: 1fr;
            gap: 30px;
            padding: 24px 0 40px;
        }
        @media (min-width: 992px) {
            .page-wrap {
                grid-template-columns: 1fr 320px;
            }
        }
        .article-body h1 {
            font-size: 2.2rem;
            color: #082b20;
            margin: 16px 0 12px;
            line-height: 1.2;
            border-left: 6px solid #e6a817;
            padding-left: 16px;
        }
        .article-body h2 {
            font-size: 1.6rem;
            color: #0b3d2e;
            margin: 40px 0 14px;
            padding-bottom: 8px;
            border-bottom: 2px solid #c8dcd4;
        }
        .article-body h3 {
            font-size: 1.25rem;
            color: #145a43;
            margin: 28px 0 10px;
        }
        .article-body h4 {
            font-size: 1.05rem;
            color: #1a6b55;
            margin: 20px 0 8px;
        }
        .article-body p {
            margin-bottom: 16px;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 16px 20px;
        }
        .article-body li {
            margin-bottom: 6px;
        }
        .lead {
            font-size: 1.15rem;
            color: #2d5345;
            font-weight: 500;
        }
        .highlight-box {
            background: #e8f3ee;
            border-left: 5px solid #0f6b4f;
            padding: 16px 20px;
            border-radius: 0 10px 10px 0;
            margin: 24px 0;
        }
        .info-card {
            background: #fff;
            border-radius: 12px;
            padding: 20px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, .06);
            margin: 24px 0;
            border: 1px solid #e3ece7;
        }
        .info-card h4 {
            margin-top: 0;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
        }
        @media (min-width: 640px) {
            .grid-2 {
                grid-template-columns: 1fr 1fr;
            }
        }
        .feature-img {
            border-radius: 14px;
            margin: 20px 0;
            box-shadow: 0 6px 20px rgba(0, 0, 0, .1);
            width: 100%;
            height: auto;
        }
        .pro-tip {
            background: #fdf9e7;
            border: 1px solid #eadfa8;
            border-radius: 10px;
            padding: 14px 16px;
            margin: 20px 0;
            font-size: 0.95rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 16px 0;
        }
        table {
            border-collapse: collapse;
            width: 100%;
            background: #fff;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, .04);
        }
        th,
        td {
            padding: 12px 14px;
            text-align: left;
            border-bottom: 1px solid #eee;
            font-size: 14px;
        }
        th {
            background: #0f6b4f;
            color: #fff;
            font-weight: 700;
        }
        tr:hover {
            background: #f5faf7;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .widget {
            background: #fff;
            border-radius: 14px;
            padding: 20px;
            box-shadow: 0 4px 14px rgba(0, 0, 0, .05);
            border: 1px solid #e3ece7;
        }
        .widget h3 {
            font-size: 18px;
            color: #0b3d2e;
            border-bottom: 2px solid #e6a817;
            padding-bottom: 8px;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .widget ul {
            list-style: none;
            padding: 0;
        }
        .widget li {
            margin-bottom: 8px;
        }
        .widget li a {
            display: block;
            background: #f2f7f5;
            border-radius: 8px;
            padding: 8px 12px;
            font-size: 14px;
            transition: background .2s;
        }
        .widget li a:hover {
            background: #e0ece6;
            text-decoration: none;
        }
        .form-group {
            margin-bottom: 14px;
        }
        label {
            font-weight: 600;
            display: block;
            margin-bottom: 4px;
            font-size: 14px;
        }
        input,
        textarea,
        select {
            width: 100%;
            padding: 10px 12px;
            border: 1px solid #c8dcd4;
            border-radius: 8px;
            font-size: 14px;
            font-family: inherit;
            background: #fafdfc;
        }
        input:focus,
        textarea:focus {
            outline: none;
            border-color: #0f6b4f;
            box-shadow: 0 0 0 3px rgba(15, 107, 79, .1);
        }
        .btn {
            background: #0f6b4f;
            color: #fff;
            border: none;
            padding: 10px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: background .2s;
            display: inline-block;
        }
        .btn:hover {
            background: #145a43;
            text-decoration: none;
        }
        .rating-stars {
            display: flex;
            gap: 4px;
            font-size: 22px;
            color: #e6a817;
        }
        .rating-stars i {
            cursor: pointer;
        }
        .video-placeholder {
            background: linear-gradient(145deg, #0b3d2e, #145a43);
            border-radius: 14px;
            padding: 30px;
            text-align: center;
            color: #f0c040;
            margin: 24px 0;
        }
        .video-placeholder i {
            font-size: 44px;
            margin-bottom: 10px;
        }
        .site-footer {
            background: #072319;
            color: #b8cfc4;
            padding: 40px 0 20px;
            margin-top: 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-bottom: 30px;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        .footer-grid h4 {
            color: #f0c040;
            margin-bottom: 12px;
            font-size: 16px;
        }
        .footer-grid a {
            color: #b8cfc4;
            font-size: 14px;
        }
        .footer-grid a:hover {
            color: #f0c040;
        }
        .copyright {
            border-top: 1px solid #1d4a38;
            padding-top: 18px;
            text-align: center;
            font-size: 13px;
        }
        friend-link {
            display: block;
            background: #0d3025;
            border-radius: 10px;
            padding: 16px;
            margin: 16px 0;
            text-align: center;
            font-style: normal;
        }
        friend-link a {
            color: #f0c040;
            margin: 0 12px;
            display: inline-block;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: inline-block;
            }
            .main-nav {
                display: none;
            }
            .main-nav.open {
                display: block;
                width: 100%;
            }
            .main-nav ul {
                flex-direction: column;
            }
            .my-logo {
                font-size: 20px;
                padding: 2px 10px;
            }
            .header-search input {
                width: 100px;
            }
            .article-body h1 {
                font-size: 1.6rem;
            }
        }