*,
        *::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: #f4f7fc;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
        }
        a {
            color: #1a5f9e;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e67e22;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 10px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b2a45 0%, #1a4b6d 100%);
            color: #fff;
            padding: 18px 0;
            border-bottom: 4px solid #f1c40f;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: 2px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            color: #f1c40f;
            font-size: 2.1rem;
        }
        .my-logo:hover {
            color: #f1c40f;
            text-decoration: none;
        }
        .my-logo span {
            font-weight: 300;
            font-size: 0.9rem;
            color: #aac8e0;
            display: block;
            line-height: 1.2;
        }
        .logo-wrap {
            display: flex;
            flex-direction: column;
        }
        .logo-wrap small {
            font-size: 0.7rem;
            color: #8ab3d6;
            letter-spacing: 1px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e8f0f8;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.95rem;
            transition: background 0.25s, color 0.25s;
        }
        .main-nav a:hover {
            background: rgba(241, 196, 15, 0.2);
            color: #f1c40f;
            text-decoration: none;
        }
        .main-nav .active {
            background: #f1c40f;
            color: #0b2a45;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0d8e0;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            padding: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #7a8a9a;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #1a5f9e;
        }
        .breadcrumb .current {
            color: #2c3e50;
            font-weight: 600;
        }
        section {
            padding: 40px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: #0b2a45;
            margin-bottom: 30px;
            border-left: 6px solid #f1c40f;
            padding-left: 20px;
            position: relative;
        }
        .section-title i {
            color: #f1c40f;
            margin-right: 12px;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
            margin: 30px 0;
        }
        .card {
            background: #fff;
            border-radius: 16px;
            padding: 28px 22px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            transition: transform 0.3s, box-shadow 0.3s;
            border: 1px solid #e6ecf3;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
        }
        .card h3 {
            font-size: 1.4rem;
            color: #0b2a45;
            margin-bottom: 12px;
        }
        .card h3 i {
            color: #f1c40f;
            margin-right: 8px;
        }
        .card p {
            color: #3d5167;
            font-size: 0.98rem;
        }
        .content-block {
            background: #fff;
            border-radius: 20px;
            padding: 40px 36px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
            margin-bottom: 36px;
        }
        .content-block h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0b2a45;
            margin: 36px 0 18px 0;
            border-bottom: 2px solid #eef3f8;
            padding-bottom: 10px;
        }
        .content-block h2:first-child {
            margin-top: 0;
        }
        .content-block h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1a4b6d;
            margin: 28px 0 14px 0;
        }
        .content-block h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2c5f7c;
            margin: 20px 0 10px 0;
        }
        .content-block p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #1e2a3a;
        }
        .content-block ul,
        .content-block ol {
            margin: 16px 0 20px 30px;
        }
        .content-block li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .content-block .highlight-box {
            background: #f0f6fe;
            border-left: 6px solid #f1c40f;
            padding: 20px 24px;
            border-radius: 10px;
            margin: 24px 0;
        }
        .content-block .highlight-box strong {
            color: #0b2a45;
        }
        .content-block .emoji-lg {
            font-size: 1.6rem;
            margin-right: 8px;
        }
        .search-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            max-width: 600px;
            margin: 20px 0;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border: 2px solid #d0d8e0;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: #1a5f9e;
        }
        .search-form button {
            background: #1a5f9e;
            color: #fff;
            border: none;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-form button:hover {
            background: #0b2a45;
            transform: scale(1.02);
        }
        .comment-rating-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin: 30px 0;
        }
        @media (max-width:768px) {
            .comment-rating-wrap {
                grid-template-columns: 1fr;
            }
        }
        .form-card {
            background: #fff;
            border-radius: 16px;
            padding: 28px 24px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e6ecf3;
        }
        .form-card h3 {
            font-size: 1.4rem;
            margin-bottom: 18px;
            color: #0b2a45;
        }
        .form-card label {
            display: block;
            font-weight: 600;
            margin: 16px 0 6px;
            color: #1a4b6d;
        }
        .form-card input,
        .form-card textarea,
        .form-card select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #d0d8e0;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.3s;
            background: #fafcff;
        }
        .form-card input:focus,
        .form-card textarea:focus,
        .form-card select:focus {
            border-color: #1a5f9e;
            outline: none;
        }
        .form-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-card .btn-submit {
            background: #f1c40f;
            color: #0b2a45;
            border: none;
            padding: 14px 28px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            margin-top: 18px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .form-card .btn-submit:hover {
            background: #d4a90a;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 6px;
            font-size: 1.8rem;
            margin: 8px 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #d0d8e0;
            cursor: pointer;
            transition: color 0.2s;
            font-size: 1.8rem;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f1c40f;
        }
        .feature-img {
            margin: 30px 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
        }
        .feature-img figcaption {
            background: #eef3f8;
            padding: 12px 20px;
            font-size: 0.9rem;
            color: #3d5167;
            text-align: center;
        }
        friend-link {
            display: block;
            padding: 24px 0;
        }
        .friend-links-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            justify-content: center;
            padding: 12px 0;
        }
        .friend-links-wrap a {
            color: #1a5f9e;
            font-weight: 500;
            padding: 6px 16px;
            background: #eef3f8;
            border-radius: 30px;
            transition: background 0.2s, color 0.2s;
            font-size: 0.95rem;
        }
        .friend-links-wrap a:hover {
            background: #1a5f9e;
            color: #fff;
            text-decoration: none;
        }
        .site-footer {
            background: #0b2a45;
            color: #c0d4e6;
            padding: 36px 0 24px;
            margin-top: 40px;
            border-top: 4px solid #f1c40f;
        }
        .site-footer .footer-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
            text-align: center;
        }
        .site-footer a {
            color: #aac8e0;
        }
        .site-footer a:hover {
            color: #f1c40f;
        }
        .site-footer .copyright {
            font-size: 0.9rem;
            opacity: 0.85;
            letter-spacing: 0.5px;
        }
        .last-updated {
            display: inline-block;
            background: #eef3f8;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            color: #3d5167;
            margin-bottom: 20px;
        }
        .last-updated i {
            margin-right: 6px;
            color: #1a5f9e;
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0b2a45;
                padding: 16px 0 20px;
                border-radius: 0 0 16px 16px;
                gap: 6px;
                margin-top: 12px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 10px 20px;
                border-radius: 6px;
                width: 100%;
                text-align: center;
            }
            .hamburger {
                display: block;
            }
            .content-block {
                padding: 24px 18px;
            }
            .section-title {
                font-size: 1.7rem;
                padding-left: 14px;
            }
            .content-block h2 {
                font-size: 1.6rem;
            }
            .content-block h3 {
                font-size: 1.3rem;
            }
            .my-logo {
                font-size: 1.6rem;
            }
            .breadcrumb ol {
                flex-wrap: wrap;
                font-size: 0.82rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .search-form input {
                min-width: 140px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .content-block {
                padding: 18px 14px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .content-block h2 {
                font-size: 1.3rem;
            }
            .content-block p {
                font-size: 0.98rem;
            }
            .form-card {
                padding: 18px 16px;
            }
            .star-rating {
                font-size: 1.4rem;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .gap-8 {
            gap: 8px;
        }
        .fw-700 {
            font-weight: 700;
        }
        .color-accent {
            color: #f1c40f;
        }