*,
        *::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, sans-serif;
            background: #f4f7fc;
            color: #1a1a2e;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #d4380d;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #ff6b00;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0a1628;
            margin-top: 1.2em;
            margin-bottom: 0.5em;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #ff6b00;
            padding-bottom: 0.3em;
            display: inline-block;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #ff6b00;
            padding-left: 0.7em;
        }
        h3 {
            font-size: 1.4rem;
            color: #1a3a5c;
        }
        h4 {
            font-size: 1.15rem;
            color: #2c3e50;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2em;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(145deg, #0a1628 0%, #1a2a4a 100%);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: 1px;
            background: linear-gradient(135deg, #ff6b00, #ff8c42);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            -webkit-text-fill-color: #ff6b00;
            color: #ff6b00;
            font-size: 2rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.6rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e0e8f0;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: border-color 0.25s, color 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .main-nav a:hover {
            color: #ff8c42;
            border-bottom-color: #ff6b00;
            text-decoration: none;
        }
        .main-nav a i {
            font-size: 0.85rem;
            color: #ff8c42;
        }
        .breadcrumb-bar {
            background: #e8edf5;
            padding: 0.5rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d0d8e5;
        }
        .breadcrumb-bar ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb-bar li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #888;
        }
        .breadcrumb-bar a {
            color: #2c3e50;
        }
        .breadcrumb-bar a:hover {
            color: #d4380d;
        }
        .breadcrumb-bar .active {
            color: #555;
            font-weight: 500;
        }
        .hero-section {
            background: linear-gradient(135deg, #0f1a2e, #1d3557);
            color: #f0f4fa;
            padding: 2.5rem 0 2rem;
            border-radius: 0 0 40px 40px;
            margin-bottom: 2rem;
        }
        .hero-section h1 {
            color: #fff;
            border-bottom-color: #ff8c42;
            font-size: 2.6rem;
            margin-top: 0;
        }
        .hero-section .subhead {
            font-size: 1.15rem;
            opacity: 0.9;
            max-width: 750px;
            margin-top: 0.6rem;
        }
        .hero-section .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 1.2rem;
            font-size: 0.9rem;
            opacity: 0.85;
        }
        .hero-section .meta-info i {
            margin-right: 6px;
            color: #ff8c42;
        }
        .search-module {
            background: #fff;
            border-radius: 60px;
            padding: 0.4rem 0.4rem 0.4rem 1.5rem;
            display: flex;
            align-items: center;
            max-width: 520px;
            margin: 1.5rem 0 0.5rem;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
            border: 1px solid #e0e8f0;
        }
        .search-module input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 1rem;
            padding: 0.7rem 0;
            background: transparent;
            color: #1a1a2e;
        }
        .search-module input::placeholder {
            color: #8a9aa8;
        }
        .search-module button {
            background: #ff6b00;
            border: none;
            border-radius: 50px;
            padding: 0.7rem 1.8rem;
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: background 0.25s, transform 0.15s;
        }
        .search-module button:hover {
            background: #e85d00;
            transform: scale(1.02);
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.2rem;
            padding: 1.5rem 0 3rem;
        }
        .main-column {
            min-width: 0;
        }
        .sidebar-column {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .card {
            background: #fff;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            margin-bottom: 2rem;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #eaeef5;
            transition: box-shadow 0.3s;
        }
        .card:hover {
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.08);
        }
        .card figure {
            margin: 1.2rem 0;
            border-radius: 16px;
            overflow: hidden;
            background: #eef2f7;
        }
        .card figure img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .card figure figcaption {
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #555;
            background: #f8fafc;
            border-top: 1px solid #e0e8f0;
        }
        .highlight-box {
            background: #fef7e9;
            border-left: 5px solid #ff6b00;
            padding: 1.2rem 1.6rem;
            border-radius: 0 12px 12px 0;
            margin: 1.4rem 0;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 18px;
            padding: 1.5rem 1.4rem;
            margin-bottom: 1.6rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #eaeef5;
        }
        .sidebar-card h4 {
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid #ff6b00;
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        .link-list {
            list-style: none;
            padding: 0;
            margin: 0.8rem 0 0;
        }
        .link-list li {
            padding: 0.45rem 0;
            border-bottom: 1px solid #f0f2f5;
        }
        .link-list li:last-child {
            border-bottom: none;
        }
        .link-list a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: #1a3a5c;
        }
        .link-list a:hover {
            color: #d4380d;
        }
        .link-list a i {
            color: #ff6b00;
            font-size: 0.75rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            font-size: 0.9rem;
            color: #1a2a4a;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1.5px solid #d0d8e5;
            border-radius: 12px;
            font-size: 0.95rem;
            background: #fafcfe;
            transition: border 0.25s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #ff6b00;
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.15);
        }
        .form-group textarea {
            min-height: 90px;
            resize: vertical;
        }
        .btn {
            background: #ff6b00;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 60px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:hover {
            background: #e85d00;
            transform: scale(1.02);
        }
        .btn-secondary {
            background: #1a2a4a;
        }
        .btn-secondary:hover {
            background: #0f1a2e;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            font-size: 1.6rem;
            cursor: pointer;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ccc;
            transition: color 0.2s;
            cursor: pointer;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #ffb300;
        }
        .site-footer {
            background: #0a1628;
            color: #c8d4e0;
            padding: 2.5rem 0 1.2rem;
            margin-top: 2.5rem;
            border-top: 4px solid #ff6b00;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        .site-footer h5 {
            color: #ff8c42;
            font-size: 1rem;
            margin-top: 0;
            margin-bottom: 0.8rem;
            letter-spacing: 1px;
        }
        .site-footer a {
            color: #b0c4de;
        }
        .site-footer a:hover {
            color: #ff8c42;
        }
        .friend-link {
            display: block;
            padding: 0.3rem 0;
        }
        .friend-link a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .friend-link a i {
            font-size: 0.7rem;
            color: #ff8c42;
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 1.5rem;
            margin-top: 1.5rem;
            border-top: 1px solid #1e3450;
            font-size: 0.85rem;
            color: #8a9aa8;
        }
        .copyright strong {
            color: #e0e8f0;
        }
        @media (max-width: 900px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar-column {
                position: static;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .hero-section h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .card {
                padding: 1.2rem 1.2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0.4rem;
                padding: 1rem 0 0.5rem;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 0.6rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.5rem 0.8rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
                width: 100%;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .hero-section {
                padding: 1.8rem 0 1.5rem;
            }
            .hero-section h1 {
                font-size: 1.6rem;
            }
            .search-module {
                flex-wrap: wrap;
                border-radius: 30px;
                padding: 0.3rem 0.3rem 0.3rem 1rem;
            }
            .search-module input {
                font-size: 0.9rem;
                padding: 0.5rem 0;
                min-width: 120px;
            }
            .search-module button {
                padding: 0.5rem 1.2rem;
                font-size: 0.85rem;
            }
            .breadcrumb-bar ol {
                font-size: 0.75rem;
                gap: 0.2rem 0.5rem;
            }
            .star-rating {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .card {
                padding: 0.9rem 0.9rem;
            }
            h1 {
                font-size: 1.4rem;
            }
            h2 {
                font-size: 1.25rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .hero-section h1 {
                font-size: 1.3rem;
            }
            .search-module button span {
                display: none;
            }
            .search-module button i {
                margin-right: 0;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        :focus-visible {
            outline: 2px solid #ff6b00;
            outline-offset: 2px;
        }
        ::selection {
            background: #ff6b00;
            color: #fff;
        }