*,
        *::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, sans-serif;
            line-height: 1.75;
            color: #1e2a3a;
            background: #f8fafc;
            padding: 0 1rem;
            max-width: 1280px;
            margin: 0 auto;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #0a5c8a;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e67e22;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0b2b3b;
            margin: 1.5rem 0 1rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #0b2b3b;
            margin: 2.2rem 0 0.8rem;
            border-bottom: 3px solid #f1c40f;
            padding-bottom: 0.3rem;
            display: inline-block;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #1e3b4f;
            margin: 1.6rem 0 0.6rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2c4a62;
            margin: 1rem 0 0.4rem;
        }
        p {
            margin-bottom: 1.1rem;
            color: #2c3e50;
        }
        strong {
            color: #0b2b3b;
            font-weight: 700;
        }
        .highlight {
            background: #fff8e1;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
            font-weight: 600;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 0;
            border-bottom: 2px solid #e2e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #0b2b3b;
            background: linear-gradient(135deg, #f1c40f, #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #e67e22;
            font-size: 1.6rem;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }
        .my-logo a:hover {
            text-decoration: none;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            flex-wrap: wrap;
        }
        nav a {
            font-weight: 500;
            font-size: 0.95rem;
            color: #1e2a3a;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        nav a:hover {
            border-bottom-color: #f1c40f;
            color: #0b2b3b;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: #0b2b3b;
            padding: 0.2rem 0.6rem;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.8rem 0;
            margin: 0;
            font-size: 0.85rem;
            color: #5a6b7a;
        }
        .breadcrumb li {
            margin: 0 0.3rem 0 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.4rem;
            color: #9aa8b7;
        }
        .breadcrumb a {
            color: #0a5c8a;
        }
        .breadcrumb .current {
            color: #2c3e50;
            font-weight: 600;
        }
        section {
            margin: 2.5rem 0;
        }
        .container {
            width: 100%;
            padding: 0 0.2rem;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 1.8rem 0;
        }
        .feature-card {
            background: white;
            border-radius: 16px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #eef2f6;
            transition: transform 0.2s, box-shadow 0.3s;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
        }
        .feature-card i {
            font-size: 2rem;
            color: #e67e22;
            margin-bottom: 0.8rem;
        }
        .feature-card h3 {
            margin-top: 0;
        }
        .tip-list {
            list-style: none;
            padding: 0;
        }
        .tip-list li {
            background: white;
            padding: 1rem 1.2rem;
            border-radius: 10px;
            margin-bottom: 0.7rem;
            border-left: 4px solid #f1c40f;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
        }
        .tip-list li i {
            color: #e67e22;
            font-size: 1.2rem;
            margin-top: 0.2rem;
            flex-shrink: 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.4rem 0;
            border-radius: 12px;
            background: white;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th {
            background: #0b2b3b;
            color: white;
            padding: 0.9rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 0.8rem 1rem;
            border-bottom: 1px solid #eef2f6;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f8fafc;
        }
        .search-box {
            display: flex;
            gap: 0.6rem;
            max-width: 560px;
            margin: 1.5rem 0;
            flex-wrap: wrap;
        }
        .search-box input {
            flex: 1;
            padding: 0.75rem 1.2rem;
            border: 2px solid #dce3ec;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: 0.2s;
            min-width: 180px;
        }
        .search-box input:focus {
            border-color: #e67e22;
            box-shadow: 0 0 0 4px rgba(230, 126, 34, 0.12);
        }
        .search-box button {
            padding: 0.75rem 1.8rem;
            background: #0b2b3b;
            color: white;
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-box button:hover {
            background: #e67e22;
            transform: scale(1.02);
        }
        .comment-area,
        .rating-area {
            background: white;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
            border: 1px solid #eef2f6;
            margin: 1.8rem 0;
        }
        .comment-area textarea,
        .comment-area input {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #dce3ec;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            transition: 0.2s;
            margin-top: 0.4rem;
        }
        .comment-area textarea:focus,
        .comment-area input:focus {
            border-color: #e67e22;
            box-shadow: 0 0 0 4px rgba(230, 126, 34, 0.08);
        }
        .comment-area .field-group {
            margin-bottom: 1rem;
        }
        .comment-area label {
            font-weight: 600;
            color: #1e2a3a;
        }
        .btn {
            padding: 0.7rem 2rem;
            background: #0b2b3b;
            color: white;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: #e67e22;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 126, 34, 0.25);
        }
        .btn-secondary {
            background: #e2e8f0;
            color: #1e2a3a;
        }
        .btn-secondary:hover {
            background: #cbd5e1;
            transform: translateY(-2px);
            box-shadow: none;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 0.3rem;
            justify-content: flex-end;
            margin: 0.8rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #dce3ec;
            cursor: pointer;
            transition: 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f1c40f;
        }
        .figure-img {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            background: #eef2f6;
            position: relative;
        }
        .figure-img img {
            width: 100%;
            object-fit: cover;
            max-height: 480px;
        }
        .figure-img figcaption {
            padding: 0.8rem 1.2rem;
            background: rgba(11, 43, 59, 0.85);
            color: #f8fafc;
            font-size: 0.9rem;
            text-align: center;
        }
        footer {
            border-top: 2px solid #e2e8f0;
            padding: 2.5rem 0 1.8rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-grid h4 {
            color: #0b2b3b;
            margin-top: 0;
        }
        friend-link {
            display: block;
            background: #f1f5f9;
            padding: 1.2rem 1.5rem;
            border-radius: 12px;
            font-size: 0.95rem;
            margin: 1rem 0;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.8rem 0.2rem 0;
        }
        .copyright {
            text-align: center;
            color: #5a6b7a;
            font-size: 0.85rem;
            padding-top: 1.5rem;
            border-top: 1px solid #e2e8f0;
        }
        .copyright strong {
            color: #0b2b3b;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.8rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.6rem;
                padding: 1rem 0 0.5rem;
                border-top: 1px solid #e2e8f0;
                margin-top: 0.8rem;
            }
            nav a {
                font-size: 1.05rem;
                padding: 0.5rem 0;
            }
            .hamburger {
                display: block;
            }
            #nav-toggle:checked~nav {
                display: flex;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .comment-area,
            .rating-area {
                padding: 1.2rem;
            }
            .search-box input {
                min-width: 140px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .table-wrap {
                font-size: 0.85rem;
            }
            th,
            td {
                padding: 0.6rem 0.7rem;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.5rem;
            }
            .search-box button {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
            .star-rating label {
                font-size: 1.6rem;
            }
            .tip-list li {
                padding: 0.8rem 1rem;
                font-size: 0.92rem;
            }
        }
        .text-muted {
            color: #5a6b7a;
            font-size: 0.9rem;
        }
        .updated-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #e8f0f8;
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            color: #0a5c8a;
            font-weight: 500;
        }
        .divider {
            height: 2px;
            background: linear-gradient(90deg, #f1c40f, #e67e22, transparent);
            margin: 2rem 0;
            border: none;
        }
        .inline-link {
            font-weight: 600;
            color: #0a5c8a;
            border-bottom: 1px dotted #e67e22;
        }
        .inline-link:hover {
            border-bottom-style: solid;
        }
        blockquote {
            border-left: 4px solid #e67e22;
            background: #fefaf5;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2c3e50;
        }
        blockquote strong {
            color: #0b2b3b;
        }
        .emoji-big {
            font-size: 1.6rem;
            margin-right: 0.3rem;
        }
        .two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
        }
        @media (max-width: 640px) {
            .two-col {
                grid-template-columns: 1fr;
            }
        }