*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7fc;
            color: #1a1a2e;
            line-height: 1.8;
            padding: 0 1rem;
        }
        a {
            color: #2b5f8a;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #c44536;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 60px rgba(0, 0, 0, 0.04);
            border-radius: 24px;
            padding: 1.5rem 2rem 2rem;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.5rem;
            }
            .container {
                padding: 1rem 1rem 1.5rem;
                border-radius: 16px;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 0 0.8rem;
            border-bottom: 2px solid #e8ecf4;
            position: relative;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #2b5f8a, #1a3a5c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo i {
            background: linear-gradient(135deg, #c44536, #e07a5f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1a1a2e;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #eef2f7;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1.2rem 1.8rem;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 0.95rem;
            color: #2b3a4e;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            border-bottom-color: #c44536;
            color: #c44536;
            text-decoration: none;
        }
        .main-nav a.active {
            border-bottom-color: #2b5f8a;
            color: #2b5f8a;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 1rem 0 0.5rem;
                gap: 0.6rem;
                border-top: 1px solid #e8ecf4;
                margin-top: 0.8rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.5rem 0.8rem;
                border-radius: 8px;
                width: 100%;
            }
            .main-nav a:hover {
                background: #f0f3f9;
                border-bottom-color: transparent;
            }
        }
        .breadcrumbs {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem 0.6rem;
            padding: 0.8rem 0 0.2rem;
            font-size: 0.85rem;
            color: #5a6a7e;
        }
        .breadcrumbs a {
            color: #2b5f8a;
        }
        .breadcrumbs a:hover {
            color: #c44536;
        }
        .breadcrumbs span {
            color: #8a9aa8;
        }
        .breadcrumbs .current {
            color: #1a1a2e;
            font-weight: 600;
        }
        h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 1.6rem 0 0.8rem;
            color: #0f1a2e;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 2.4rem 0 1rem;
            padding-bottom: 0.4rem;
            border-bottom: 3px solid #e8ecf4;
            color: #162b42;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 1.8rem 0 0.8rem;
            color: #1e3d5a;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 1.2rem 0 0.5rem;
            color: #2a4a6a;
        }
        p {
            margin-bottom: 1.1rem;
            color: #2c3440;
        }
        .lead {
            font-size: 1.2rem;
            color: #2b3a4e;
            font-weight: 400;
            border-left: 4px solid #c44536;
            padding-left: 1.2rem;
            margin: 1.2rem 0 1.8rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            h4 {
                font-size: 1.05rem;
            }
            .lead {
                font-size: 1.05rem;
            }
        }
        .featured-image {
            margin: 2rem 0 1.5rem;
            border-radius: 16px;
            overflow: hidden;
        }
        .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .featured-image figcaption {
            font-size: 0.85rem;
            color: #5a6a7e;
            padding: 0.6rem 0.2rem 0;
            font-style: italic;
        }
        .search-section {
            background: #f0f4fb;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            margin: 2rem 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem 1.5rem;
        }
        .search-section label {
            font-weight: 600;
            color: #1a2a3e;
            font-size: 1.05rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form {
            display: flex;
            flex: 1 1 300px;
            gap: 0.6rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.7rem 1.2rem;
            border: 2px solid #d0d8e4;
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.2s;
            background: #fff;
        }
        .search-form input:focus {
            border-color: #2b5f8a;
        }
        .search-form button {
            background: #2b5f8a;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-form button:hover {
            background: #1a3a5c;
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2.4rem 0;
        }
        @media (max-width: 768px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .card {
            background: #f8faff;
            border-radius: 16px;
            padding: 1.6rem 2rem 2rem;
            border: 1px solid #e4eaf2;
        }
        .card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.2rem;
        }
        .card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .card form input,
        .card form textarea,
        .card form select {
            padding: 0.7rem 1rem;
            border: 2px solid #d0d8e4;
            border-radius: 10px;
            font-size: 0.95rem;
            outline: none;
            font-family: inherit;
            transition: border-color 0.2s;
            background: #fff;
        }
        .card form input:focus,
        .card form textarea:focus,
        .card form select:focus {
            border-color: #2b5f8a;
        }
        .card form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .card form button {
            background: #c44536;
            color: #fff;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .card form button:hover {
            background: #a13327;
            transform: scale(1.02);
        }
        .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: 1.6rem;
            color: #ccd4df;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f4b942;
        }
        .inline-links {
            background: #f0f4fb;
            border-radius: 14px;
            padding: 1.2rem 1.6rem;
            margin: 1.8rem 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.4rem;
        }
        .inline-links a {
            font-weight: 500;
            font-size: 0.92rem;
            background: #fff;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            border: 1px solid #dce3ee;
            transition: background 0.2s, border-color 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .inline-links a:hover {
            background: #e6edf7;
            border-color: #2b5f8a;
            text-decoration: none;
        }
        friend-link {
            display: block;
            background: #f2f5fa;
            border-radius: 14px;
            padding: 1.4rem 1.8rem;
            margin: 2rem 0 0.5rem;
            font-style: normal;
        }
        friend-link .fl-title {
            font-weight: 700;
            font-size: 1rem;
            color: #1a2a3e;
            margin-bottom: 0.6rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        friend-link .fl-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
        }
        friend-link .fl-list a {
            font-weight: 500;
            font-size: 0.92rem;
            background: #fff;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            border: 1px solid #dce3ee;
            transition: background 0.2s;
        }
        friend-link .fl-list a:hover {
            background: #e0e8f2;
            text-decoration: none;
        }
        .site-footer {
            margin-top: 3rem;
            padding: 1.8rem 0 1rem;
            border-top: 2px solid #e8ecf4;
            text-align: center;
            font-size: 0.9rem;
            color: #5a6a7e;
        }
        .site-footer .copyright {
            font-weight: 500;
        }
        .badge {
            display: inline-block;
            background: #e8edf6;
            border-radius: 30px;
            padding: 0.15rem 0.9rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: #2b5f8a;
        }
        .updated {
            font-size: 0.85rem;
            color: #5a6a7e;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            margin: 0.4rem 0 1.2rem;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        hr {
            border: none;
            border-top: 2px solid #eef2f7;
            margin: 2rem 0;
        }
        .toc {
            background: #f8faff;
            border-radius: 14px;
            padding: 1.4rem 1.8rem;
            margin: 1.6rem 0 2rem;
            border: 1px solid #e4eaf2;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ul {
            columns: 2 240px;
            list-style: none;
            padding: 0;
            margin: 0.6rem 0 0;
        }
        .toc li {
            padding: 0.2rem 0;
        }
        .toc li a {
            font-weight: 500;
        }
        @media (max-width: 480px) {
            .toc ul {
                columns: 1;
            }
        }
        .schema-hidden {
            display: none;
        }
        @media (max-width: 480px) {
            .search-section {
                padding: 1.2rem 1rem;
                flex-direction: column;
                align-items: stretch;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                align-self: stretch;
                justify-content: center;
            }
            .card {
                padding: 1.2rem 1rem 1.6rem;
            }
            .feedback-grid {
                gap: 1.2rem;
            }
            .inline-links {
                padding: 0.8rem 1rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
        }