*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 1rem;
            max-width: 1280px;
            margin: 0 auto;
        }
        a {
            color: #0f3b5e;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1e6f9f;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 600;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: #0a1a2b;
        }
        h1 {
            font-size: 2.4rem;
            margin: 1.2rem 0 0.8rem;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.4rem 0 1rem;
            border-bottom: 3px solid #d4e2ed;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.35rem;
            margin: 1.8rem 0 0.6rem;
        }
        h4 {
            font-size: 1.1rem;
            margin: 1.2rem 0 0.4rem;
            color: #1e4a6b;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            background: #ffffff;
            border-radius: 24px;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.04);
            padding: 1.8rem 2rem;
            margin: 1.5rem 0;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0;
            gap: 1rem;
            position: relative;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 700;
            background: linear-gradient(135deg, #0f3b5e, #1e6f9f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #1e6f9f;
            font-size: 1.8rem;
        }
        .my-logo small {
            font-size: 0.75rem;
            opacity: 0.6;
            -webkit-text-fill-color: #4a6a7a;
            font-weight: 400;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            cursor: pointer;
            color: #0f3b5e;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #e9f0f6;
        }
        nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.6rem 1.2rem;
        }
        nav a {
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        nav a:hover {
            border-bottom-color: #1e6f9f;
            text-decoration: none;
        }
        nav a.active {
            border-bottom-color: #0f3b5e;
            color: #0f3b5e;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            font-size: 0.85rem;
            color: #5f7d95;
            padding: 0.6rem 0 0.2rem;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #9ab0c5;
            font-size: 1.2rem;
            line-height: 1;
        }
        .breadcrumb a {
            color: #1e6f9f;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #1e293b;
            font-weight: 500;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            max-width: 480px;
            margin: 1.2rem 0 1.8rem;
            flex-wrap: wrap;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1.2rem;
            border: 2px solid #d4e2ed;
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s, box-shadow 0.2s;
            background: #f9fcff;
        }
        .search-form input[type="text"]:focus {
            border-color: #1e6f9f;
            box-shadow: 0 0 0 4px rgba(30, 111, 159, 0.08);
        }
        .search-form button {
            background: #0f3b5e;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.7rem 1.6rem;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #1e6f9f;
            transform: scale(1.02);
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.8rem;
            margin: 1.8rem 0;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        .card {
            background: #f9fcff;
            border-radius: 16px;
            padding: 1.5rem;
            border: 1px solid #eaf1f8;
            transition: box-shadow 0.25s, transform 0.2s;
        }
        .card:hover {
            box-shadow: 0 12px 32px rgba(15, 59, 94, 0.08);
            transform: translateY(-3px);
        }
        .card i {
            font-size: 1.8rem;
            color: #1e6f9f;
            margin-bottom: 0.8rem;
        }
        .card h3 {
            margin-top: 0;
        }
        .form-block {
            background: #f2f7fc;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            margin: 2rem 0;
            border: 1px solid #dce8f2;
        }
        .form-block form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 640px;
        }
        .form-block input,
        .form-block textarea,
        .form-block select {
            padding: 0.7rem 1rem;
            border: 2px solid #d4e2ed;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            background: #ffffff;
            transition: border 0.2s;
            width: 100%;
        }
        .form-block input:focus,
        .form-block textarea:focus,
        .form-block select:focus {
            border-color: #1e6f9f;
            outline: none;
        }
        .form-block textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-block button {
            background: #0f3b5e;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.8rem 2rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
        }
        .form-block button:hover {
            background: #1e6f9f;
            transform: scale(1.02);
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #ffb84d;
            cursor: pointer;
            flex-wrap: wrap;
        }
        .rating-stars i {
            transition: transform 0.15s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .featured-img {
            margin: 1.8rem 0;
            border-radius: 16px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }
        .featured-img figcaption {
            font-size: 0.85rem;
            color: #5f7d95;
            margin-top: 0.5rem;
            text-align: center;
            font-style: italic;
        }
        footer {
            margin-top: 3rem;
            padding: 2rem 0 1.5rem;
            border-top: 2px solid #e2ecf5;
            text-align: center;
            font-size: 0.9rem;
            color: #3a5a72;
        }
        friend-link {
            display: block;
            padding: 1.2rem 0;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.3rem 1rem;
            font-weight: 500;
        }
        .copyright {
            font-size: 0.82rem;
            color: #6a8aa2;
            padding-top: 0.8rem;
            border-top: 1px solid #e2ecf5;
            margin-top: 0.8rem;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.6rem;
            }
            .container {
                padding: 1.2rem 1rem;
                border-radius: 16px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            header {
                flex-wrap: wrap;
                padding: 0.6rem 0;
            }
            .hamburger {
                display: block;
                order: 2;
            }
            nav {
                display: none;
                flex-direction: column;
                width: 100%;
                order: 3;
                padding: 1rem 0 0.4rem;
                gap: 0.8rem;
                background: #ffffff;
                border-top: 1px solid #e2ecf5;
                margin-top: 0.4rem;
            }
            nav.open {
                display: flex;
            }
            nav a {
                font-size: 1.1rem;
                padding: 0.4rem 0;
                border-bottom: none;
            }
            .breadcrumb {
                font-size: 0.78rem;
                gap: 0.3rem 0.6rem;
            }
            .search-form input[type="text"] {
                min-width: 140px;
            }
            .form-block {
                padding: 1.2rem 1rem;
            }
            .my-logo {
                font-size: 1.6rem;
            }
            .grid-2,
            .grid-3 {
                gap: 1rem;
            }
        }
        @media (max-width: 480px) {
            .search-form button {
                padding: 0.6rem 1.2rem;
                font-size: 0.85rem;
            }
            .search-form input[type="text"] {
                font-size: 0.85rem;
                padding: 0.6rem 1rem;
            }
            .rating-stars {
                font-size: 1.4rem;
            }
        }
        .text-muted {
            color: #5f7d95;
        }
        .text-small {
            font-size: 0.85rem;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .last-updated {
            display: inline-block;
            padding: 0.3rem 1rem;
            background: #e9f0f6;
            border-radius: 40px;
            font-size: 0.8rem;
            color: #2a4b63;
        }
        blockquote {
            border-left: 4px solid #1e6f9f;
            padding: 0.8rem 1.2rem;
            margin: 1.5rem 0;
            background: #f2f7fc;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #1e3a4f;
        }
        .highlight {
            background: #fef9e7;
            padding: 0.1rem 0.4rem;
            border-radius: 6px;
            font-weight: 500;
        }
        hr {
            border: none;
            border-top: 2px dashed #d4e2ed;
            margin: 2rem 0;
        }