*,
        *::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, 'Helvetica Neue', sans-serif;
            background: #f4f7fc;
            color: #1a2639;
            line-height: 1.7;
            padding: 0 16px;
            max-width: 1280px;
            margin: 0 auto;
        }
        a {
            color: #0047ab;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #e63946;
            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 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #0a1f3b;
            margin: 1.2rem 0 0.6rem;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #0d2b4e;
            margin: 2rem 0 0.8rem;
            border-left: 5px solid #e63946;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #1a3a5c;
            margin: 1.6rem 0 0.6rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2a4a6a;
            margin: 1.2rem 0 0.4rem;
        }
        p {
            margin-bottom: 1rem;
            font-size: 1.05rem;
            color: #1f2a3f;
        }
        .text-muted {
            color: #4a5a7a;
            font-size: 0.95rem;
        }
        .highlight {
            background: #ffedcc;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji-lg {
            font-size: 1.4rem;
            margin-right: 0.3rem;
        }
        header {
            padding: 1rem 0 0.5rem;
            border-bottom: 2px solid #dce3ed;
            margin-bottom: 0.8rem;
            background: #ffffff;
            border-radius: 0 0 16px 16px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0 0.5rem;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0a1f3b, #e63946);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
            display: inline-block;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.85;
        }
        .logo-sub {
            font-size: 0.7rem;
            display: block;
            color: #4a5a7a;
            -webkit-text-fill-color: #4a5a7a;
            font-weight: 400;
            letter-spacing: 0.3px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #0a1f3b;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #eef2f7;
        }
        nav.func-nav ul {
            display: flex;
            gap: 0.2rem 1rem;
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: wrap;
            align-items: center;
        }
        nav.func-nav ul li a {
            font-weight: 500;
            padding: 0.3rem 0.6rem;
            border-radius: 8px;
            font-size: 0.95rem;
            color: #1a2a4a;
            transition: background 0.2s, color 0.2s;
        }
        nav.func-nav ul li a:hover {
            background: #e63946;
            color: #fff;
            text-decoration: none;
        }
        nav.func-nav ul li a i {
            margin-right: 0.3rem;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.6rem 0;
            margin: 0 0 0.6rem;
            font-size: 0.9rem;
            color: #4a5a7a;
            gap: 0.3rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 0.5rem;
            color: #8a9ab0;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #0047ab;
        }
        .breadcrumb .active {
            color: #1a2639;
            font-weight: 600;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            margin: 1.2rem 0;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 1rem;
            align-self: start;
        }
        .card {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            margin-bottom: 1.6rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8edf4;
        }
        .card-soft {
            background: #f8faff;
            border-left: 4px solid #e63946;
        }
        .feature-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin: 1.6rem 0;
        }
        .feature-item {
            background: #f0f5fe;
            border-radius: 12px;
            padding: 1rem 1.2rem;
            text-align: center;
            border: 1px solid #dce3ed;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .feature-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        }
        .feature-item i {
            font-size: 2rem;
            color: #e63946;
            margin-bottom: 0.5rem;
        }
        .img-wrapper {
            margin: 1.8rem 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .img-wrapper img {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
        }
        .img-caption {
            font-size: 0.85rem;
            color: #4a5a7a;
            text-align: center;
            padding: 0.6rem;
            background: #f0f5fe;
            font-style: italic;
        }
        .search-box {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0 1.6rem;
            flex-wrap: wrap;
        }
        .search-box input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1rem;
            border: 2px solid #dce3ed;
            border-radius: 30px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
            background: #fff;
        }
        .search-box input[type="text"]:focus {
            border-color: #e63946;
        }
        .search-box button {
            padding: 0.7rem 1.6rem;
            background: #e63946;
            color: #fff;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-box button:hover {
            background: #c1121f;
            transform: scale(1.02);
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #0a1f3b;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dce3ed;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.3s;
            background: #fff;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #e63946;
            outline: none;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn-primary {
            background: #e63946;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary:hover {
            background: #c1121f;
            transform: scale(1.02);
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #ffb703;
            cursor: pointer;
            margin: 0.5rem 0;
        }
        .rating-stars i {
            transition: transform 0.15s, color 0.2s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
            color: #e85d04;
        }
        footer {
            margin-top: 3rem;
            padding: 1.6rem 0 2rem;
            border-top: 2px solid #dce3ed;
            background: #ffffff;
            border-radius: 16px 16px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.5rem;
            padding: 0 0.5rem;
        }
        .footer-grid h4 {
            color: #0a1f3b;
            margin-bottom: 0.6rem;
        }
        .footer-grid ul {
            list-style: none;
            padding: 0;
        }
        .footer-grid ul li {
            margin-bottom: 0.3rem;
        }
        .footer-grid ul li a {
            color: #2a4a6a;
            font-size: 0.95rem;
        }
        .footer-grid ul li a:hover {
            color: #e63946;
        }
        friend-link {
            display: block;
            padding: 1rem 0.5rem;
            margin: 0.8rem 0;
            border-top: 1px dashed #dce3ed;
            font-size: 0.95rem;
        }
        friend-link a {
            color: #0047ab;
            margin: 0 0.3rem;
        }
        .copyright {
            text-align: center;
            padding: 1.2rem 0.5rem 0.2rem;
            font-size: 0.9rem;
            color: #4a5a7a;
            border-top: 1px solid #e8edf4;
            margin-top: 0.8rem;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 10px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            nav.func-nav {
                flex-basis: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease, padding 0.3s ease;
                padding: 0;
            }
            nav.func-nav.active {
                max-height: 600px;
                padding: 0.8rem 0 0.2rem;
            }
            nav.func-nav ul {
                flex-direction: column;
                gap: 0.2rem;
                width: 100%;
            }
            nav.func-nav ul li a {
                display: block;
                padding: 0.6rem 0.8rem;
                border-radius: 8px;
            }
            .card {
                padding: 1rem 1.2rem;
            }
            .feature-box {
                grid-template-columns: 1fr 1fr;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .my-logo {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 480px) {
            .feature-box {
                grid-template-columns: 1fr;
            }
            .search-box button {
                flex: 1;
                justify-content: center;
            }
            .rating-stars {
                font-size: 1.4rem;
            }
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .fw-bold {
            font-weight: 700;
        }
        .text-center {
            text-align: center;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .gap-1 {
            gap: 1rem;
        }
        .align-center {
            align-items: center;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.7rem 0.8rem;
            text-align: left;
            border-bottom: 1px solid #e8edf4;
        }
        th {
            background: #0a1f3b;
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f4f8ff;
        }