*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.7;
            font-size: 1.05rem;
            padding: 0 1.25rem;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1d4ed8;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 0.75rem;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #0f172a;
            margin-top: 1.8rem;
            margin-bottom: 0.75rem;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #3b82f6;
            padding-bottom: 0.5rem;
            display: inline-block;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #3b82f6;
            padding-left: 1rem;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.4rem;
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-top: 1.5rem;
            color: #334155;
        }
        p {
            margin-bottom: 1.25rem;
        }
        strong {
            color: #0f172a;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            background: #ffffff;
            padding: 1.5rem 2rem;
            border-radius: 1rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0 0.75rem 0;
            border-bottom: 2px solid #e2e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(135deg, #3b82f6, #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #3b82f6;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            flex-wrap: wrap;
        }
        .nav-bar a {
            font-weight: 600;
            color: #1e293b;
            padding: 0.3rem 0.6rem;
            border-radius: 0.4rem;
            transition: background 0.2s, color 0.2s;
            font-size: 0.98rem;
        }
        .nav-bar a:hover {
            background: #eef2ff;
            color: #2563eb;
            text-decoration: none;
        }
        .nav-bar a i {
            margin-right: 0.3rem;
            font-size: 0.9rem;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            cursor: pointer;
            color: #1e293b;
            padding: 0.2rem 0.5rem;
            border-radius: 0.4rem;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #eef2ff;
        }
        .nav-toggle {
            display: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.3rem 0.6rem;
            font-size: 0.9rem;
            padding: 0.6rem 0 0.2rem 0;
            color: #64748b;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #94a3b8;
            font-weight: 700;
            margin-right: 0.3rem;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .hero-img {
            margin: 1.8rem 0 1.2rem 0;
            border-radius: 1rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .form-card {
            background: #f1f5f9;
            border-radius: 1rem;
            padding: 1.5rem 1.8rem;
            margin: 2rem 0;
            border: 1px solid #e2e8f0;
        }
        .form-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .form-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            flex: 1 1 200px;
            padding: 0.7rem 1rem;
            border: 1px solid #cbd5e1;
            border-radius: 0.6rem;
            font-size: 1rem;
            background: #fff;
            transition: border 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #3b82f6;
            outline: none;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }
        .form-group textarea {
            min-height: 90px;
            flex-basis: 100%;
            resize: vertical;
        }
        .btn {
            background: #3b82f6;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 0.6rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: #2563eb;
            transform: translateY(-1px);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn-secondary {
            background: #64748b;
        }
        .btn-secondary:hover {
            background: #475569;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.25rem;
            font-size: 1.6rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #cbd5e1;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f59e0b;
        }
        friend-link {
            display: block;
            background: #f8fafc;
            border-radius: 0.8rem;
            padding: 1.2rem 1.5rem;
            margin: 1.5rem 0;
            border: 1px solid #e2e8f0;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.25rem 1rem 0.25rem 0;
        }
        .site-footer {
            border-top: 2px solid #e2e8f0;
            padding: 1.5rem 0 1rem 0;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.92rem;
            color: #64748b;
        }
        .site-footer .copyright {
            margin-top: 0.5rem;
        }
        .last-updated {
            display: inline-block;
            background: #eef2ff;
            padding: 0.2rem 1rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            color: #475569;
            margin: 1rem 0 0.2rem 0;
        }
        .last-updated i {
            margin-right: 0.3rem;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.75rem;
            }
            .container {
                padding: 1rem 1rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .site-header {
                flex-wrap: wrap;
            }
            .hamburger {
                display: inline-block;
            }
            .nav-bar {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.4rem;
                padding: 1rem 0 0.5rem 0;
                border-top: 1px solid #e2e8f0;
                margin-top: 0.75rem;
            }
            .nav-bar a {
                width: 100%;
                padding: 0.6rem 0.8rem;
                border-radius: 0.4rem;
            }
            .nav-toggle:checked~.nav-bar {
                display: flex;
            }
            .nav-toggle:checked~.hamburger .fa-bars {
                display: none;
            }
            .nav-toggle:checked~.hamburger .fa-times {
                display: inline-block;
            }
            .hamburger .fa-times {
                display: none;
            }
            .form-group {
                flex-direction: column;
            }
            .form-group input,
            .form-group textarea,
            .form-group select {
                flex-basis: auto;
                width: 100%;
            }
            .star-rating {
                font-size: 1.4rem;
            }
            .hero-img {
                margin: 1rem 0;
            }
        }
        @media (min-width: 769px) {
            .nav-bar {
                display: flex !important;
            }
            .hamburger {
                display: none !important;
            }
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }
        @media (max-width: 640px) {
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }
        .highlight-box {
            background: #f0f7ff;
            border-left: 4px solid #3b82f6;
            padding: 1rem 1.5rem;
            border-radius: 0.5rem;
            margin: 1.5rem 0;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        .tag {
            display: inline-block;
            background: #dbeafe;
            color: #1e40af;
            padding: 0.15rem 0.7rem;
            border-radius: 1rem;
            font-size: 0.8rem;
            font-weight: 600;
        }