*,
        *::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: #f4f7fb;
            color: #1a2634;
            line-height: 1.7;
            padding: 0 1rem;
            max-width: 1280px;
            margin: 0 auto;
        }
        a {
            color: #1a6dd4;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #0d4a9e;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            color: #0b1e2e;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4em;
            border-bottom: 4px solid #ffb347;
            display: inline-block;
            padding-bottom: 0.2em;
        }
        h2 {
            font-size: 1.9rem;
            border-left: 6px solid #ffb347;
            padding-left: 0.8rem;
        }
        h3 {
            font-size: 1.5rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.2rem;
            color: #2c4c6e;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .container {
            padding: 1rem 0 3rem;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 0;
            border-bottom: 2px solid #e0e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #0b1e2e;
            letter-spacing: -0.5px;
            background: linear-gradient(145deg, #ffb347, #f28c28);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
            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: #4a5b6e;
            color: #4a5b6e;
            letter-spacing: 0.2px;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .nav-bar a {
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            color: #1a2634;
            background: transparent;
            transition: background 0.2s, color 0.2s;
        }
        .nav-bar a:hover {
            background: #ffb347;
            color: #0b1e2e;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #1a2634;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #e8edf4;
        }
        #nav-toggle {
            display: none;
        }
        #nav-toggle:checked~.nav-bar {
            display: flex;
            flex-direction: column;
            width: 100%;
            background: #ffffff;
            padding: 1rem 0 1.2rem;
            border-radius: 0 0 20px 20px;
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
            margin-top: 0.8rem;
        }
        #nav-toggle:checked~.nav-bar a {
            width: 100%;
            text-align: center;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.8rem;
            font-size: 0.9rem;
            padding: 0.8rem 0 0.2rem;
            color: #5a6a7a;
            list-style: none;
        }
        .breadcrumb li {
            display: inline;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #b0c0d0;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #1a6dd4;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .section-card {
            background: #ffffff;
            border-radius: 24px;
            padding: 2rem 2.2rem;
            margin: 2.2rem 0;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.03);
            border: 1px solid #eef3f8;
            transition: box-shadow 0.2s;
        }
        .section-card:hover {
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        .feature-item {
            background: #f8fafc;
            padding: 1.5rem 1.2rem;
            border-radius: 16px;
            text-align: center;
            border: 1px solid #e6edf4;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .feature-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.05);
        }
        .feature-item i {
            font-size: 2.4rem;
            color: #f28c28;
            margin-bottom: 0.6rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #1e3a5f;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 2px solid #dce5ed;
            border-radius: 12px;
            font-size: 1rem;
            background: #fafcff;
            transition: border 0.2s, box-shadow 0.2s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #ffb347;
            outline: none;
            box-shadow: 0 0 0 4px rgba(255, 179, 71, 0.15);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            padding: 0.7rem 2rem;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            background: #ffb347;
            color: #0b1e2e;
            transition: background 0.2s, transform 0.1s;
            box-shadow: 0 4px 12px rgba(255, 179, 71, 0.3);
        }
        .btn:hover {
            background: #f5a032;
            transform: scale(1.02);
        }
        .btn:active {
            transform: scale(0.97);
        }
        .btn-secondary {
            background: #e8edf4;
            color: #1a2634;
            box-shadow: none;
        }
        .btn-secondary:hover {
            background: #d5dee9;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #d0d8e0;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #ffb347;
        }
        .comment-box {
            background: #f8fafc;
            border-radius: 16px;
            padding: 1rem 1.5rem;
            margin: 1rem 0;
            border-left: 4px solid #ffb347;
        }
        .comment-box .author {
            font-weight: 700;
            color: #0b1e2e;
        }
        .comment-box .date {
            font-size: 0.85rem;
            color: #7a8a9a;
        }
        friend-link {
            display: inline-block;
            background: #eef3f8;
            padding: 0.3rem 1rem;
            border-radius: 40px;
            margin: 0.2rem 0.3rem;
            font-size: 0.95rem;
            transition: background 0.2s;
        }
        friend-link a {
            color: #1a6dd4;
        }
        friend-link:hover {
            background: #dce5ed;
        }
        .friend-links-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .site-footer {
            border-top: 2px solid #e0e8f0;
            padding: 2rem 0 1.5rem;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.95rem;
            color: #4a5b6e;
        }
        .site-footer .copyright {
            margin-top: 1rem;
            font-size: 0.9rem;
            color: #6a7a8a;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.6rem;
            }
            .hamburger {
                display: inline-block;
            }
            .nav-bar {
                display: none;
                width: 100%;
                margin-top: 0.5rem;
            }
            #nav-toggle:checked~.nav-bar {
                display: flex;
            }
            .section-card {
                padding: 1.5rem 1rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .my-logo {
                font-size: 1.6rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                font-size: 0.8rem;
                gap: 0.2rem 0.5rem;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.5rem;
            }
            .section-card {
                padding: 1rem 0.8rem;
            }
            .btn {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
        }
        .text-muted {
            color: #6a7a8a;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #6a7a8a;
            background: #eef3f8;
            display: inline-block;
            padding: 0.2rem 1rem;
            border-radius: 40px;
        }
        .schema-hidden {
            display: none;
        }