*,
        *::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;
            background: #f6f9fc;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #0a66c2;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #06407a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.04);
            border-radius: 28px;
            padding: 1.5rem 2rem 2rem;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0 1rem;
            border-bottom: 1px solid #e2e9f0;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #1b2b4a, #3a6ea5);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none !important;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none !important;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            -webkit-text-fill-color: #5a6f8a;
            color: #5a6f8a;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 1.2rem;
            align-items: center;
        }
        .nav-list a {
            font-weight: 500;
            padding: 0.3rem 0.2rem;
            border-bottom: 2px solid transparent;
            color: #1e2a3a;
        }
        .nav-list a:hover {
            border-bottom-color: #0a66c2;
            text-decoration: none;
            color: #0a66c2;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #1e2a3a;
            padding: 0 0.25rem;
        }
        #nav-toggle {
            display: none;
        }
        #nav-toggle:checked~.nav-list {
            display: flex;
            flex-direction: column;
            position: absolute;
            top: 70px;
            left: 1rem;
            right: 1rem;
            background: #ffffff;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
            border-radius: 20px;
            padding: 1.5rem 1.2rem;
            z-index: 99;
            gap: 1rem;
        }
        #nav-toggle:checked~.nav-list a {
            border-bottom: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.8rem 0 0.2rem;
            font-size: 0.9rem;
            color: #5a6f8a;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 0.6rem;
            color: #b0c4d8;
        }
        .breadcrumb a {
            color: #0a66c2;
        }
        .breadcrumb .active {
            color: #1e2a3a;
            font-weight: 500;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            margin: 1.2rem 0 0.6rem;
            line-height: 1.2;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #0b1e33, #2a5c8a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 2.4rem 0 0.8rem;
            padding-bottom: 0.3rem;
            border-bottom: 2px solid #e2e9f0;
            color: #14273e;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 1.8rem 0 0.6rem;
            color: #1b3a5e;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 1.2rem 0 0.4rem;
            color: #2c4d72;
        }
        p {
            margin-bottom: 1.1rem;
        }
        .lead {
            font-size: 1.2rem;
            color: #2a405c;
            font-weight: 400;
            border-left: 4px solid #3a6ea5;
            padding-left: 1.2rem;
            margin: 1.2rem 0 1.8rem;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        .feature-image {
            border-radius: 20px;
            margin: 2rem 0 2.5rem;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
            background: #f0f5fa;
            padding: 0.5rem;
        }
        .feature-image img {
            border-radius: 16px;
            width: 100%;
        }
        .feature-image figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: #5a6f8a;
            padding-top: 0.5rem;
        }
        .highlight-box {
            background: #f0f7ff;
            border-radius: 20px;
            padding: 1.5rem 1.8rem;
            margin: 1.8rem 0;
            border-left: 6px solid #3a6ea5;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 1.5rem 0;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        .stat-card {
            background: #ffffff;
            border-radius: 18px;
            padding: 1.4rem 1.2rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e7edf5;
            transition: transform 0.15s, box-shadow 0.2s;
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.07);
        }
        .stat-card i {
            font-size: 1.8rem;
            color: #3a6ea5;
            margin-bottom: 0.5rem;
        }
        .form-section {
            background: #f8fbfe;
            border-radius: 24px;
            padding: 1.8rem 2rem;
            margin: 2.2rem 0;
            border: 1px solid #e2e9f0;
        }
        .form-section h3 {
            margin-top: 0;
        }
        .form-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin: 0.8rem 0;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            flex: 1 1 200px;
            padding: 0.75rem 1rem;
            border-radius: 40px;
            border: 1px solid #d0dcec;
            background: #ffffff;
            font-size: 1rem;
            transition: border 0.2s, box-shadow 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #3a6ea5;
            box-shadow: 0 0 0 3px rgba(58, 110, 165, 0.15);
        }
        .form-group textarea {
            border-radius: 20px;
            min-height: 100px;
            flex-basis: 100%;
        }
        .btn {
            background: #1b2b4a;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .btn:hover {
            background: #2a507a;
            transform: scale(1.02);
        }
        .btn-secondary {
            background: #e2e9f0;
            color: #1e2a3a;
        }
        .btn-secondary:hover {
            background: #cdd9e6;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #d0dcec;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5b342;
        }
        .link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 0.6rem 1.2rem;
            margin: 1.2rem 0;
            padding: 0.8rem 1.2rem;
            background: #f4f8fe;
            border-radius: 18px;
            list-style: none;
        }
        .link-grid li a {
            display: inline-block;
            padding: 0.2rem 0;
        }
        .link-grid li a::before {
            content: "🔗 ";
            font-size: 0.85rem;
        }
        friend-link {
            display: block;
            margin: 2rem 0 0.8rem;
            padding: 1.4rem 1.6rem;
            background: #edf3fa;
            border-radius: 20px;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 1rem 0.2rem 0;
        }
        footer {
            border-top: 1px solid #e2e9f0;
            padding: 1.8rem 0 1rem;
            margin-top: 2.5rem;
            font-size: 0.9rem;
            color: #4a607a;
        }
        footer .copyright {
            text-align: center;
            margin-top: 0.8rem;
            font-size: 0.85rem;
        }
        @media (max-width: 768px) {
            .container {
                padding: 1rem 1.2rem;
                border-radius: 20px;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .grid-2,
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .nav-list {
                display: none;
                position: static;
                flex-direction: column;
                background: transparent;
                box-shadow: none;
                padding: 0;
                gap: 0.6rem;
                width: 100%;
            }
            .hamburger {
                display: block;
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
                position: static;
                box-shadow: none;
                padding: 1rem 0 0.5rem;
                border-top: 1px solid #e2e9f0;
                margin-top: 0.5rem;
            }
            header {
                flex-wrap: wrap;
            }
            .nav-wrapper {
                order: 3;
                width: 100%;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .form-section {
                padding: 1.2rem 1rem;
            }
            .star-rating {
                font-size: 1.5rem;
            }
        }
        @media (min-width: 769px) {
            .hamburger {
                display: none !important;
            }
            .nav-list {
                display: flex !important;
                flex-direction: row;
                position: static;
                box-shadow: none;
                padding: 0;
                background: transparent;
            }
            #nav-toggle:checked~.nav-list {
                display: flex !important;
                flex-direction: row;
            }
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .text-small {
            font-size: 0.9rem;
            color: #5a6f8a;
        }
        .badge {
            display: inline-block;
            background: #e2e9f0;
            padding: 0.15rem 0.8rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
        }