* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f8f9fc;
            color: #1e1e2f;
            line-height: 1.7;
            padding: 0 1rem;
            scroll-behavior: smooth;
        }
        a {
            color: #4f46e5;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #7c3aed;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 0.5rem;
        }
        .header {
            background: #ffffff;
            border-bottom: 1px solid #e9eef4;
            padding: 0.75rem 0;
            position: sticky;
            top: 0;
            z-index: 50;
            backdrop-filter: blur(6px);
            background: rgba(255, 255, 255, 0.92);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.7rem;
            font-weight: 800;
            background: linear-gradient(135deg, #4f46e5, #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #4f46e5;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-links {
            display: flex;
            gap: 1.8rem;
            align-items: center;
            flex-wrap: wrap;
            list-style: none;
        }
        .nav-links a {
            font-weight: 600;
            color: #1e1e2f;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .nav-links a:hover {
            border-bottom-color: #4f46e5;
            color: #4f46e5;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1e1e2f;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
        }
        .breadcrumb {
            padding: 1rem 0 0.2rem 0;
            font-size: 0.9rem;
            color: #6b7280;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
        }
        .breadcrumb a {
            color: #4f46e5;
        }
        .breadcrumb span {
            color: #9ca3af;
        }
        .content {
            background: #fff;
            border-radius: 24px;
            padding: 2.2rem 2rem;
            margin: 1.5rem 0 2.5rem 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 0.75rem;
            color: #0f0f1a;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            color: #1e1e2f;
            border-left: 5px solid #4f46e5;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 0.6rem;
            color: #2d2d44;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-top: 1.4rem;
            margin-bottom: 0.4rem;
            color: #3b3b54;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            color: #2a2a3a;
        }
        .content ul,
        .content ol {
            margin-bottom: 1.4rem;
            padding-left: 1.8rem;
        }
        .content li {
            margin-bottom: 0.5rem;
            font-size: 1.02rem;
        }
        .highlight {
            background: #f0f0ff;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.3rem;
        }
        .featured-img {
            margin: 2rem 0 2.2rem 0;
            border-radius: 16px;
            overflow: hidden;
            background: #f0f2f8;
            text-align: center;
        }
        .featured-img img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        .featured-img figcaption {
            padding: 0.6rem 1rem 0.8rem;
            font-size: 0.9rem;
            color: #6b7280;
            font-style: italic;
        }
        .form-section {
            background: #f8faff;
            border-radius: 18px;
            padding: 1.8rem 2rem;
            margin: 2.2rem 0 1.8rem 0;
            border: 1px solid #e9eef4;
        }
        .form-section 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 {
            padding: 0.7rem 1rem;
            border: 1px solid #d1d9e6;
            border-radius: 10px;
            font-size: 1rem;
            flex: 1 1 200px;
            background: #fff;
            transition: 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #4f46e5;
            outline: none;
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
        }
        .form-group textarea {
            min-height: 80px;
            flex-basis: 100%;
        }
        .form-group button {
            background: #4f46e5;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .form-group button:hover {
            background: #7c3aed;
            transform: translateY(-1px);
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #d1d9e6;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f59e0b;
        }
        .footer {
            border-top: 1px solid #e9eef4;
            padding: 2.2rem 0 1.5rem 0;
            margin-top: 2rem;
            text-align: center;
        }
        .footer friend-link {
            display: block;
            margin: 1rem 0;
            font-size: 1rem;
            color: #4b5563;
        }
        .footer friend-link a {
            margin: 0 0.6rem;
            font-weight: 500;
        }
        .footer .copyright {
            font-size: 0.9rem;
            color: #9ca3af;
            margin-top: 0.8rem;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.6rem;
            }
            .content {
                padding: 1.5rem 1rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.6rem;
                padding: 1rem 0 0.2rem 0;
                border-top: 1px solid #e9eef4;
                margin-top: 0.6rem;
            }
            .nav-links.open {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .form-section {
                padding: 1.2rem 1rem;
            }
            .form-group input,
            .form-group textarea {
                flex-basis: 100%;
            }
            .featured-img img {
                max-height: 280px;
            }
        }
        @media (min-width: 769px) {
            .nav-links {
                display: flex !important;
            }
            .hamburger {
                display: none !important;
            }
        }
        .updated-badge {
            display: inline-block;
            background: #eef2ff;
            color: #4f46e5;
            padding: 0.25rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
        }
        .quote-block {
            background: #f3f4ff;
            border-left: 4px solid #7c3aed;
            padding: 1.2rem 1.8rem;
            border-radius: 0 14px 14px 0;
            margin: 1.6rem 0;
            font-style: italic;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.98rem;
        }
        table th {
            background: #eef2ff;
            text-align: left;
            padding: 0.7rem 1rem;
            font-weight: 600;
        }
        table td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #e9eef4;
        }
        .anchor-offset {
            scroll-margin-top: 90px;
        }