*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #f7f3ee;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
        }
        a {
            color: #d97706;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #b45309;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            color: #fbbf24;
            text-shadow: 0 2px 8px rgba(251, 191, 36, 0.3);
            transition: transform 0.2s;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #fcd34d;
        }
        .my-logo span {
            color: #f97316;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: #e2e8f0;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 40px;
            font-size: 0.9rem;
            transition: background 0.2s, color 0.2s;
        }
        .nav-menu a:hover {
            background: rgba(251, 191, 36, 0.15);
            color: #fbbf24;
            text-decoration: none;
        }
        .nav-menu a i {
            margin-right: 0.4rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: #fbbf24;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(251, 191, 36, 0.1);
        }
        .breadcrumb {
            background: #f1ede8;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #e2dcd5;
        }
        .breadcrumb .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.3rem;
        }
        .breadcrumb a {
            color: #78716c;
        }
        .breadcrumb a:hover {
            color: #d97706;
        }
        .breadcrumb .separator {
            color: #a8a29e;
            margin: 0 0.2rem;
        }
        .breadcrumb .current {
            color: #1e293b;
            font-weight: 600;
        }
        main {
            padding: 2.5rem 0 3rem;
        }
        h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0f172a;
            margin-bottom: 0.8rem;
            letter-spacing: -0.02em;
        }
        h1 i {
            color: #d97706;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #1e293b;
            margin-top: 3rem;
            margin-bottom: 1rem;
            padding-bottom: 0.4rem;
            border-bottom: 3px solid #fbbf24;
            display: inline-block;
        }
        h2 i {
            color: #f97316;
            margin-right: 0.6rem;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #334155;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        h3 i {
            color: #f59e0b;
            margin-right: 0.5rem;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #475569;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            color: #2d3a4a;
        }
        .lead {
            font-size: 1.2rem;
            color: #3f4a5a;
            font-weight: 400;
            background: #fef9ec;
            padding: 1.2rem 1.8rem;
            border-radius: 16px;
            border-left: 5px solid #fbbf24;
            margin-bottom: 2rem;
        }
        .highlight-box {
            background: #fef9ec;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 1.5rem 0;
            border: 1px solid #fde68a;
        }
        .highlight-box i {
            color: #d97706;
            margin-right: 0.5rem;
        }
        strong {
            color: #0f172a;
        }
        .featured-image-wrapper {
            margin: 2rem 0 2.5rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .featured-image-wrapper img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .image-caption {
            font-size: 0.85rem;
            color: #78716c;
            text-align: center;
            padding: 0.6rem;
            background: #f1ede8;
        }
        .search-section {
            background: #1e293b;
            padding: 2rem 2.5rem;
            border-radius: 20px;
            margin: 2.5rem 0;
            color: #fff;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
        }
        .search-section h3 {
            color: #fbbf24;
            margin-top: 0;
            font-size: 1.5rem;
        }
        .search-section p {
            color: #cbd5e1;
        }
        .search-form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            margin-top: 1rem;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 0.9rem 1.4rem;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            background: #fff;
            color: #1e293b;
            outline: none;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }
        .search-form button {
            padding: 0.9rem 2rem;
            background: #fbbf24;
            border: none;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            color: #0f172a;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .search-form button:hover {
            background: #f59e0b;
            transform: translateY(-2px);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.5rem 0;
        }
        .card {
            background: #fff;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #ede9e4;
        }
        .card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            color: #0f172a;
        }
        .card h3 i {
            color: #d97706;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            color: #334155;
            margin-bottom: 0.3rem;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1px solid #d6d0ca;
            border-radius: 12px;
            font-size: 0.95rem;
            background: #faf9f7;
            transition: border 0.2s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #fbbf24;
            outline: none;
            background: #fff;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            padding: 0.7rem 1.8rem;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary {
            background: #d97706;
            color: #fff;
        }
        .btn-primary:hover {
            background: #b45309;
            transform: translateY(-2px);
        }
        .btn-secondary {
            background: #e2e8f0;
            color: #1e293b;
        }
        .btn-secondary:hover {
            background: #cbd5e1;
            transform: translateY(-2px);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            margin: 0.5rem 0 1rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #d6d0ca;
            cursor: pointer;
            transition: color 0.2s, transform 0.1s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #fbbf24;
        }
        .star-rating label:hover {
            transform: scale(1.15);
        }
        .tier-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0 6px;
            margin: 1.5rem 0;
        }
        .tier-table th {
            background: #1e293b;
            color: #fbbf24;
            font-weight: 600;
            padding: 0.8rem 1.2rem;
            text-align: left;
            font-size: 0.9rem;
        }
        .tier-table th:first-child {
            border-radius: 12px 0 0 12px;
        }
        .tier-table th:last-child {
            border-radius: 0 12px 12px 0;
        }
        .tier-table td {
            background: #fff;
            padding: 0.8rem 1.2rem;
            border-bottom: 1px solid #f1ede8;
        }
        .tier-table td:first-child {
            border-radius: 12px 0 0 12px;
        }
        .tier-table td:last-child {
            border-radius: 0 12px 12px 0;
        }
        .tier-table tr:hover td {
            background: #fef9ec;
        }
        .tier-tag {
            display: inline-block;
            padding: 0.2rem 1rem;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.8rem;
            color: #fff;
        }
        .tier-s {
            background: #dc2626;
        }
        .tier-a {
            background: #ea580c;
        }
        .tier-b {
            background: #ca8a04;
        }
        .tier-c {
            background: #4b5563;
        }
        friend-link {
            display: block;
            background: #1e293b;
            padding: 2rem 2.5rem;
            border-radius: 20px;
            color: #e2e8f0;
            margin: 2.5rem 0 1.5rem;
        }
        friend-link h3 {
            color: #fbbf24;
            margin-top: 0;
            font-size: 1.4rem;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
            margin-top: 1rem;
        }
        friend-link ul li a {
            color: #fcd34d;
            font-weight: 500;
        }
        friend-link ul li a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 2rem 0;
            text-align: center;
            font-size: 0.9rem;
            border-top: 2px solid #1e293b;
        }
        .site-footer .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .site-footer a {
            color: #fcd34d;
        }
        .site-footer a:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 1rem 0 0.5rem;
                gap: 0.2rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.7rem 1rem;
                border-radius: 12px;
            }
            .header-inner {
                align-items: center;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .search-section {
                padding: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                min-width: auto;
            }
            .tier-table {
                font-size: 0.85rem;
            }
            .tier-table th,
            .tier-table td {
                padding: 0.6rem 0.8rem;
            }
            .site-footer .container {
                flex-direction: column;
                text-align: center;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            friend-link {
                padding: 1.5rem;
            }
            .card {
                padding: 1.2rem 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            .lead {
                font-size: 1rem;
                padding: 1rem;
            }
        }
        .updated-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #e2e8f0;
            padding: 0.3rem 1.2rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
            color: #475569;
            margin-bottom: 1.5rem;
        }
        .updated-badge i {
            color: #d97706;
        }
        .section-icon {
            font-size: 1.8rem;
            vertical-align: middle;
            margin-right: 0.3rem;
        }
        .btn i {
            font-size: 0.9rem;
        }
        .emoji-big {
            font-size: 1.4rem;
            line-height: 1;
        }
        .spacer-sm {
            height: 0.8rem;
        }
        .spacer-md {
            height: 1.5rem;
        }
        .anchor-offset {
            scroll-margin-top: 90px;
        }
        .styled-list li {
            margin-bottom: 0.6rem;
        }
        .inline-code {
            background: #f1ede8;
            padding: 0.1rem 0.6rem;
            border-radius: 6px;
            font-family: monospace;
            font-size: 0.9rem;
        }
        .fa-ul>li {
            margin-bottom: 0.5rem;
        }