*,
        *::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: #f8f7f2;
            color: #1e2a3a;
            line-height: 1.75;
            padding: 0 1rem;
        }
        a {
            color: #b45309;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #78350f;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem 0 2rem;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #1e2a3a;
            margin: 1.5rem 0 0.8rem;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #2d3a4a;
            margin: 2.4rem 0 1rem 0;
            padding-bottom: 0.4rem;
            border-bottom: 3px solid #f59e0b;
            display: inline-block;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #3a4a5a;
            margin: 1.8rem 0 0.8rem 0;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #4a5a6a;
            margin: 1.2rem 0 0.5rem 0;
        }
        p {
            margin-bottom: 1rem;
        }
        .text-muted {
            color: #5a6a7a;
            font-size: 0.92rem;
        }
        header {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            border-radius: 0 0 20px 20px;
            padding: 1.2rem 2rem;
            color: #fff;
            position: relative;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            margin-bottom: 1.5rem;
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #fbbf24;
            letter-spacing: -0.02em;
            background: linear-gradient(to right, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 12px rgba(251, 191, 36, 0.2);
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.92;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #fbbf24;
            margin-right: 6px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            flex-wrap: wrap;
        }
        nav a {
            color: #e2e8f0;
            padding: 0.4rem 1rem;
            border-radius: 40px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: all 0.2s;
        }
        nav a:hover {
            background: rgba(251, 191, 36, 0.15);
            color: #fbbf24;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fbbf24;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(251, 191, 36, 0.1);
        }
        #nav-toggle {
            display: none;
        }
        #nav-toggle:checked~nav {
            display: flex;
            flex-direction: column;
            width: 100%;
            margin-top: 1rem;
            gap: 0.2rem;
        }
        #nav-toggle:checked~nav a {
            width: 100%;
            padding: 0.6rem 1rem;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.8rem 0 0.2rem;
            font-size: 0.85rem;
            color: #94a3b8;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.6rem;
            color: #64748b;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #94a3b8;
        }
        .breadcrumb a:hover {
            color: #fbbf24;
        }
        .breadcrumb .active {
            color: #fbbf24;
        }
        .search-box {
            background: #fff;
            border-radius: 60px;
            padding: 0.4rem 0.4rem 0.4rem 1.4rem;
            display: flex;
            align-items: center;
            max-width: 480px;
            margin: 1.8rem 0 1.2rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #e2e8f0;
        }
        .search-box input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 1rem;
            padding: 0.6rem 0;
            background: transparent;
            font-family: inherit;
        }
        .search-box button {
            background: #b45309;
            border: none;
            color: #fff;
            padding: 0.6rem 1.6rem;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .search-box button:hover {
            background: #78350f;
        }
        .card {
            background: #fff;
            border-radius: 18px;
            padding: 1.8rem 2rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
            margin-bottom: 2rem;
            border: 1px solid #edf2f7;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 1.6rem;
        }
        .feature-img {
            border-radius: 16px;
            margin: 1.6rem 0;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
        }
        .img-caption {
            font-size: 0.85rem;
            color: #64748b;
            text-align: center;
            margin-top: 0.3rem;
        }
        .comment-box,
        .rating-box {
            background: #f1f5f9;
            border-radius: 16px;
            padding: 1.6rem 2rem;
            margin: 1.4rem 0;
        }
        .comment-box textarea,
        .comment-box input {
            width: 100%;
            padding: 0.8rem 1rem;
            border-radius: 10px;
            border: 1px solid #cbd5e1;
            font-family: inherit;
            font-size: 0.95rem;
            margin-bottom: 0.8rem;
            resize: vertical;
        }
        .comment-box button,
        .rating-box button {
            background: #b45309;
            color: #fff;
            border: none;
            padding: 0.6rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 0.95rem;
        }
        .comment-box button:hover,
        .rating-box button:hover {
            background: #78350f;
        }
        .stars {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #f59e0b;
            cursor: pointer;
            margin: 0.4rem 0 0.8rem;
        }
        .stars i {
            transition: transform 0.15s;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        friend-link {
            display: block;
            background: #1e293b;
            color: #e2e8f0;
            border-radius: 16px;
            padding: 1.6rem 2rem;
            margin-top: 2rem;
        }
        friend-link a {
            color: #fbbf24;
        }
        friend-link a:hover {
            color: #f59e0b;
        }
        footer {
            text-align: center;
            padding: 2rem 0 1.2rem;
            font-size: 0.88rem;
            color: #64748b;
            border-top: 1px solid #e2e8f0;
            margin-top: 2rem;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.6rem;
            }
            header {
                padding: 1rem 1.2rem;
            }
            .hamburger {
                display: inline-block;
            }
            nav {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 0.6rem;
            }
            #nav-toggle:checked~nav {
                display: flex;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .grid-2,
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .card {
                padding: 1.2rem 1rem;
            }
            .search-box {
                flex-direction: column;
                border-radius: 20px;
                padding: 0.8rem;
                gap: 0.4rem;
            }
            .search-box button {
                width: 100%;
                justify-content: center;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }
        @media (min-width: 769px) {
            #nav-toggle {
                display: none;
            }
            nav {
                display: flex !important;
            }
            .hamburger {
                display: none !important;
            }
        }
        .author-badge {
            display: flex;
            align-items: center;
            gap: 12px;
            background: #f1f5f9;
            padding: 0.8rem 1.4rem;
            border-radius: 60px;
            margin: 1rem 0 1.6rem;
            font-size: 0.9rem;
        }
        .author-badge i {
            color: #b45309;
            font-size: 1.4rem;
        }
        .updated-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #e2e8f0;
            padding: 0.3rem 1rem;
            border-radius: 40px;
            font-size: 0.82rem;
            color: #1e293b;
        }
        .emoji-lg {
            font-size: 1.3rem;
        }
        .highlight {
            background: #fef3c7;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
            font-weight: 500;
        }
        .btn-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #b45309;
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
            transition: background 0.2s;
            z-index: 99;
        }
        .btn-top:hover {
            background: #78350f;
            color: #fff;
            text-decoration: none;
        }
        @media (max-width: 480px) {
            .btn-top {
                bottom: 1rem;
                right: 1rem;
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.4rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.92rem;
        }
        th,
        td {
            padding: 0.7rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e2e8f0;
        }
        th {
            background: #f1f5f9;
            font-weight: 600;
        }
        tr:hover td {
            background: #faf5ff;
        }