*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f6f9fc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #0f6e8c;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #094c63;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 0.65rem;
            color: #0b3b4f;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0;
        }
        h2 {
            font-size: 1.7rem;
            margin-top: 2.2rem;
            border-bottom: 3px solid #fbbf24;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.3rem;
            margin-top: 1.6rem;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.2rem;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0b3b4f 0%, #1a6b7a 100%);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(to right, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 20px rgba(251, 191, 36, 0.2);
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #cbd5e1;
            color: #cbd5e1;
            display: block;
            font-weight: 400;
            letter-spacing: 0.3px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            font-size: 1.6rem;
            padding: 0.3rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .main-nav {
            display: flex;
            gap: 0.3rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #e2e8f0;
            padding: 0.4rem 0.9rem;
            border-radius: 6px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fbbf24;
            text-decoration: none;
        }
        .main-nav .active {
            background: rgba(251, 191, 36, 0.2);
            color: #fbbf24;
        }
        .breadcrumb {
            background: #e9f0f5;
            padding: 0.6rem 0;
            font-size: 0.88rem;
            border-bottom: 1px solid #d1dce6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #64748b;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #0f6e8c;
        }
        .breadcrumb .current {
            color: #475569;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, #e3f0f5 0%, #d4e8f0 100%);
            border-radius: 20px;
            padding: 2rem 2rem 1.8rem;
            margin: 2rem 0 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            align-items: center;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        }
        .hero-content {
            flex: 1 1 280px;
        }
        .hero-img-wrap {
            flex: 0 0 320px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
        }
        .hero-img-wrap img {
            width: 100%;
            height: auto;
            display: block;
        }
        .hero h1 {
            font-size: 2.4rem;
            margin-bottom: 0.75rem;
        }
        .hero p {
            font-size: 1.08rem;
            color: #1e4a5f;
        }
        .hero .badge {
            display: inline-block;
            background: #fbbf24;
            color: #0b3b4f;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.85rem;
            margin-top: 0.5rem;
        }
        .search-section {
            background: #fff;
            border-radius: 16px;
            padding: 1.6rem 2rem;
            margin: 1.8rem 0;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .search-form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1 1 220px;
            padding: 0.7rem 1.2rem;
            border: 2px solid #d1dce6;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: 0.3s;
        }
        .search-form input:focus {
            border-color: #0f6e8c;
            box-shadow: 0 0 0 3px rgba(15, 110, 140, 0.15);
        }
        .search-form button {
            background: #0b3b4f;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #1a6b7a;
            transform: translateY(-2px);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2rem 0;
        }
        .feedback-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.6rem 2rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 0.6rem 1rem;
            border: 2px solid #d1dce6;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: 0.3s;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #0f6e8c;
            box-shadow: 0 0 0 3px rgba(15, 110, 140, 0.1);
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #fbbf24;
            color: #0b3b4f;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.3s;
            align-self: flex-start;
        }
        .feedback-card .btn-submit:hover {
            background: #f59e0b;
            transform: translateY(-2px);
        }
        .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: #cbd5e1;
            cursor: pointer;
            transition: 0.2s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #fbbf24;
        }
        .content-area {
            background: #fff;
            border-radius: 20px;
            padding: 2rem 2.5rem;
            margin: 1.8rem 0;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
        }
        .content-area .last-updated {
            font-size: 0.88rem;
            color: #64748b;
            border-bottom: 1px solid #e9f0f5;
            padding-bottom: 0.6rem;
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .content-area .last-updated i {
            color: #fbbf24;
        }
        .content-area blockquote {
            border-left: 4px solid #fbbf24;
            padding: 0.8rem 1.4rem;
            margin: 1.2rem 0;
            background: #faf9f4;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #334155;
        }
        .content-area .highlight-box {
            background: #f0f7fa;
            border-radius: 14px;
            padding: 1.2rem 1.6rem;
            margin: 1.4rem 0;
            border-left: 5px solid #0f6e8c;
        }
        .content-area .tip-icon {
            color: #fbbf24;
            margin-right: 0.3rem;
        }
        .inline-link {
            font-weight: 600;
            color: #0f6e8c;
        }
        .inline-link:hover {
            color: #094c63;
        }
        .related-links {
            background: #f8fafc;
            border-radius: 14px;
            padding: 1.2rem 1.8rem;
            margin: 1.6rem 0;
            border: 1px solid #e2e8f0;
        }
        .related-links ul {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 0.5rem 1.2rem;
        }
        .related-links li::before {
            content: "🎯";
            margin-right: 0.4rem;
        }
        .related-links a {
            font-weight: 500;
        }
        .site-footer {
            background: #0b3b4f;
            color: #cbd5e1;
            padding: 2.2rem 0 1.2rem;
            margin-top: 2.5rem;
        }
        .site-footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: space-between;
        }
        .site-footer friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1.2rem 1.6rem;
            border-radius: 14px;
            flex: 1 1 280px;
        }
        .site-footer friend-link a {
            color: #fbbf24;
            display: inline-block;
            margin: 0.3rem 1rem 0.3rem 0;
        }
        .site-footer friend-link a:hover {
            color: #fff;
        }
        .site-footer .copyright {
            width: 100%;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.2rem;
            margin-top: 1.2rem;
            font-size: 0.88rem;
            color: #94a3b8;
        }
        .site-footer .copyright strong {
            color: #e2e8f0;
        }
        @media (max-width: 900px) {
            .hero {
                flex-direction: column;
                padding: 1.5rem;
            }
            .hero-img-wrap {
                flex: 0 0 auto;
                width: 100%;
                max-width: 400px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .content-area {
                padding: 1.2rem 1.2rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            h3 {
                font-size: 1.15rem;
            }
        }
        @media (max-width: 700px) {
            .nav-toggle {
                display: inline-block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 0.8rem;
                gap: 0.2rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 0.8rem;
                border-radius: 8px;
                background: rgba(255, 255, 255, 0.05);
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
            .related-links ul {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                flex: 1 1 auto;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            .hero {
                padding: 1rem;
                margin: 1rem 0;
            }
            .content-area {
                padding: 0.8rem 0.8rem;
            }
            .feedback-card {
                padding: 1rem 1.2rem;
            }
            h1 {
                font-size: 1.4rem;
            }
            h2 {
                font-size: 1.2rem;
            }
            .my-logo {
                font-size: 1.1rem;
            }
        }
        .fa-spin-hover:hover {
            animation: fa-spin 1s ease-in-out;
        }
        @keyframes fa-spin {
            0% {
                transform: rotate(0deg);
            }
            100% {
                transform: rotate(360deg);
            }
        }
        .btn-submit i,
        .search-form button i {
            margin-right: 0.3rem;
        }