*,
        *::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, 'Helvetica Neue', sans-serif;
            background: #f5f7fb;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 16px;
        }
        a {
            color: #1e6f9f;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0a4b6e;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 0.75rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #0f172a;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
        }
        h1 {
            font-size: 2.2rem;
            border-bottom: 4px solid #3b82f6;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 1.7rem;
            border-left: 5px solid #3b82f6;
            padding-left: 0.9rem;
            margin-top: 2.4rem;
        }
        h3 {
            font-size: 1.35rem;
            color: #1e293b;
        }
        h4 {
            font-size: 1.1rem;
            color: #334155;
        }
        p {
            margin-bottom: 1.2rem;
            word-break: break-word;
        }
        strong {
            color: #0f172a;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.04);
            border-radius: 24px;
            padding: 20px 28px 40px;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0 0.8rem;
            border-bottom: 1px solid #e2e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #0f172a;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #1e6f9f;
        }
        .my-logo i {
            color: #3b82f6;
            font-size: 2rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #cbd5e1;
            font-size: 1.5rem;
            padding: 6px 12px;
            border-radius: 10px;
            cursor: pointer;
            color: #1e293b;
            transition: all 0.2s;
        }
        .nav-toggle:hover {
            background: #eef2ff;
            border-color: #3b82f6;
        }
        .nav-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 18px;
            align-items: center;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .nav-menu li a {
            font-weight: 500;
            padding: 6px 6px;
            border-radius: 8px;
            font-size: 0.95rem;
            color: #1e293b;
            transition: background 0.2s, color 0.2s;
        }
        .nav-menu li a:hover {
            background: #eef2ff;
            color: #1e6f9f;
            text-decoration: none;
        }
        .nav-menu li a i {
            margin-right: 6px;
            color: #3b82f6;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.7rem 0 0.2rem;
            margin: 0 0 0.8rem;
            font-size: 0.9rem;
            color: #64748b;
            border-bottom: 1px dashed #e2e8f0;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 10px;
            color: #94a3b8;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #1e6f9f;
        }
        .breadcrumb .current {
            color: #1e293b;
            font-weight: 600;
        }
        .search-box {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            max-width: 560px;
            margin: 1.2rem 0 2rem;
            background: #f1f5f9;
            border-radius: 60px;
            padding: 4px 4px 4px 18px;
            align-items: center;
            border: 1px solid #e2e8f0;
            transition: border 0.2s;
        }
        .search-box:focus-within {
            border-color: #3b82f6;
            background: #ffffff;
        }
        .search-box i {
            color: #94a3b8;
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 12px 6px;
            font-size: 1rem;
            outline: none;
            min-width: 120px;
        }
        .search-box button {
            background: #3b82f6;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 10px 26px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-box button:hover {
            background: #2563eb;
            transform: scale(0.97);
        }
        .update-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #eef2ff;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #1e4a7a;
            margin-bottom: 1.2rem;
            border: 1px solid #c7d2fe;
        }
        .update-badge i {
            color: #3b82f6;
        }
        .content-grid {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .featured-img {
            margin: 1.5rem 0;
            border-radius: 16px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
        }
        .img-caption {
            font-size: 0.85rem;
            color: #64748b;
            margin-top: 6px;
            text-align: center;
        }
        .link-list {
            background: #f8fafc;
            border-left: 4px solid #3b82f6;
            padding: 1.2rem 1.8rem;
            border-radius: 12px;
            margin: 1.5rem 0;
        }
        .link-list h3 {
            margin-top: 0;
        }
        .link-list ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 22px;
        }
        .link-list li {
            margin: 0;
        }
        .link-list li a {
            font-weight: 500;
        }
        .link-list li a i {
            margin-right: 6px;
            color: #3b82f6;
            font-size: 0.85rem;
        }
        .feedback-section {
            margin-top: 3.5rem;
            padding-top: 2rem;
            border-top: 2px solid #e2e8f0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem 3rem;
        }
        .feedback-card {
            background: #f8fafc;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            border: 1px solid #e2e8f0;
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card h3 i {
            color: #3b82f6;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 0.8rem;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 12px 16px;
            border: 1px solid #cbd5e1;
            border-radius: 12px;
            font-size: 0.95rem;
            background: #fff;
            transition: border 0.2s;
            font-family: inherit;
            width: 100%;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #3b82f6;
            outline: none;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card button {
            background: #3b82f6;
            color: #fff;
            border: none;
            padding: 12px 20px;
            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: 8px;
            justify-content: center;
            width: fit-content;
        }
        .feedback-card button:hover {
            background: #2563eb;
            transform: scale(0.97);
        }
        .stars {
            display: flex;
            gap: 6px;
            font-size: 1.7rem;
            color: #facc15;
            cursor: pointer;
            margin: 4px 0;
        }
        .stars i {
            transition: transform 0.15s, color 0.15s;
        }
        .stars i:hover {
            transform: scale(1.18);
            color: #fbbf24;
        }
        .site-footer {
            margin-top: 3.5rem;
            padding-top: 2rem;
            border-top: 2px solid #e2e8f0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.8rem;
            font-size: 0.9rem;
            color: #475569;
        }
        .site-footer .footer-left {
            flex: 2 1 280px;
        }
        .site-footer .footer-right {
            flex: 1 1 180px;
            text-align: right;
        }
        friend-link {
            display: block;
            background: #f1f5f9;
            border-radius: 16px;
            padding: 1.2rem 1.8rem;
            margin: 1.2rem 0 0.8rem;
            border: 1px solid #e2e8f0;
            font-weight: 500;
        }
        friend-link a {
            display: inline-block;
            margin: 2px 10px 2px 0;
            padding: 4px 12px;
            background: #fff;
            border-radius: 30px;
            border: 1px solid #d1d9e6;
            font-size: 0.85rem;
            transition: background 0.2s, border-color 0.2s;
        }
        friend-link a:hover {
            background: #eef2ff;
            border-color: #3b82f6;
            text-decoration: none;
        }
        .copyright {
            margin-top: 0.8rem;
            font-size: 0.8rem;
            color: #64748b;
            border-top: 1px solid #e2e8f0;
            padding-top: 1rem;
            width: 100%;
            text-align: center;
        }
        @media (max-width: 820px) {
            .container {
                padding: 16px 18px 30px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .feedback-section {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .site-footer {
                flex-direction: column;
                text-align: center;
            }
            .site-footer .footer-right {
                text-align: center;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 0 0.4rem;
                gap: 4px;
            }
            .nav-menu.show {
                display: flex;
            }
            .nav-menu li a {
                display: block;
                padding: 10px 12px;
                width: 100%;
                border-radius: 10px;
            }
            .search-box {
                max-width: 100%;
            }
            .link-list ul {
                flex-direction: column;
                gap: 4px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 12px 12px 24px;
            }
            h1 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo i {
                font-size: 1.5rem;
            }
            .feedback-card {
                padding: 1.2rem 1.2rem;
            }
            .stars {
                font-size: 1.4rem;
            }
        }
        .text-muted {
            color: #64748b;
        }
        .mt-1 {
            margin-top: 0.5rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .gap-1 {
            gap: 0.5rem;
        }
        .gap-2 {
            gap: 1rem;
        }
        .rounded-full {
            border-radius: 999px;
        }
        .bg-soft {
            background: #f1f5f9;
        }
        .p-2 {
            padding: 1rem;
        }
        .p-3 {
            padding: 1.5rem;
        }