*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #f8f9fc;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0 20px;
        }
        a {
            color: #1e6f9f;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #0d3b5c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 16px;
        }
        .site-header {
            background: #ffffff;
            border-bottom: 2px solid #e6edf4;
            padding: 18px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 20, 40, 0.05);
            backdrop-filter: blur(4px);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px 20px;
        }
        .my-logo {
            font-size: 1.7rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #0a2a44;
            background: linear-gradient(145deg, #0a2a44, #1e6f9f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.85rem;
            font-weight: 400;
            -webkit-text-fill-color: #4a6a7a;
            color: #4a6a7a;
            letter-spacing: 0.3px;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .main-nav {
            display: flex;
            gap: 6px 18px;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 10px;
            border-radius: 8px;
            color: #1e3a5a;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            background: #e3eef9;
            color: #0a2a44;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 5px;
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1e3a5a;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #e3eef9;
        }
        .breadcrumb {
            padding: 14px 0 6px;
            font-size: 0.9rem;
            color: #4f6b7a;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 10px;
            align-items: center;
        }
        .breadcrumb a {
            color: #1e6f9f;
        }
        .breadcrumb span {
            color: #7a8f9e;
        }
        .breadcrumb .sep {
            color: #b0c4d0;
        }
        .content {
            background: #ffffff;
            border-radius: 24px;
            padding: 32px 28px;
            margin: 18px 0 32px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.03);
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0a2a44;
            margin-bottom: 0.6rem;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #0f3a5a;
            margin-top: 2.4rem;
            margin-bottom: 1rem;
            border-left: 5px solid #1e6f9f;
            padding-left: 18px;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #1a4a6a;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2a5a7a;
            margin-top: 1.4rem;
            margin-bottom: 0.5rem;
        }
        .content p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .content .lead {
            font-size: 1.2rem;
            font-weight: 400;
            color: #2a4a5a;
            background: #f0f6fb;
            padding: 18px 22px;
            border-radius: 14px;
            border-left: 4px solid #1e6f9f;
        }
        .content .highlight-box {
            background: #f2f8ff;
            border-radius: 14px;
            padding: 20px 24px;
            margin: 20px 0;
            border: 1px solid #d6e6f2;
        }
        .content .emoji-big {
            font-size: 1.5rem;
            margin-right: 6px;
        }
        hr {
            margin: 32px 0;
            border: 0;
            height: 1px;
            background: linear-gradient(to right, #d6e6f2, transparent);
        }
        .featured-img {
            margin: 28px 0;
            border-radius: 16px;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.06);
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .form-card {
            background: #f4f9fe;
            border-radius: 18px;
            padding: 24px 28px;
            margin: 28px 0;
            border: 1px solid #dce8f2;
        }
        .form-card label {
            font-weight: 600;
            display: block;
            margin-bottom: 6px;
            color: #1a3a4a;
        }
        .form-card input,
        .form-card textarea,
        .form-card select {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #c8dae8;
            border-radius: 10px;
            font-size: 1rem;
            background: #ffffff;
            transition: border 0.25s, box-shadow 0.25s;
            font-family: inherit;
            margin-bottom: 16px;
        }
        .form-card input:focus,
        .form-card textarea:focus,
        .form-card select:focus {
            outline: none;
            border-color: #1e6f9f;
            box-shadow: 0 0 0 3px rgba(30, 111, 159, 0.15);
        }
        .form-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-card .btn {
            background: #1e6f9f;
            color: #fff;
            border: none;
            padding: 13px 34px;
            border-radius: 40px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .form-card .btn:hover {
            background: #0d4a72;
            transform: translateY(-2px);
        }
        .form-card .btn i {
            font-size: 1rem;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            margin: 8px 0 18px;
            font-size: 1.8rem;
            color: #d0d8e0;
            cursor: pointer;
            flex-wrap: wrap;
        }
        .star-rating i {
            transition: color 0.2s, transform 0.15s;
        }
        .star-rating i.active,
        .star-rating i:hover {
            color: #f5b342;
            transform: scale(1.05);
        }
        .star-rating i:hover~i {
            color: #d0d8e0;
        }
        .comment-list {
            margin: 28px 0 12px;
        }
        .comment-item {
            background: #f8faff;
            border-radius: 14px;
            padding: 18px 22px;
            margin-bottom: 14px;
            border: 1px solid #e3edf5;
        }
        .comment-item strong {
            color: #0f3a5a;
        }
        .comment-item .date {
            font-size: 0.85rem;
            color: #6f8a9a;
            margin-left: 12px;
        }
        .comment-item .stars {
            color: #f5b342;
            margin-top: 4px;
            font-size: 0.95rem;
        }
        .site-footer {
            background: #ffffff;
            border-radius: 24px 24px 0 0;
            padding: 32px 24px 28px;
            margin-top: 20px;
            border-top: 2px solid #e6edf4;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.02);
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 24px 32px;
        }
        .footer-col {
            flex: 1 1 200px;
        }
        .footer-col h4 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            color: #0a2a44;
        }
        .footer-col a {
            display: block;
            padding: 3px 0;
            color: #2a5a7a;
            font-size: 0.95rem;
        }
        .footer-col a:hover {
            color: #0d3b5c;
        }
        .friend-link {
            display: block;
            background: #f0f6fb;
            border-radius: 14px;
            padding: 14px 20px;
            margin: 16px 0 10px;
            font-size: 0.95rem;
        }
        .friend-link a {
            display: inline-block;
            margin-right: 18px;
            padding: 4px 0;
        }
        .copyright {
            text-align: center;
            padding-top: 24px;
            font-size: 0.9rem;
            color: #5a7a8a;
            border-top: 1px solid #e3edf5;
            margin-top: 20px;
        }
        .copyright strong {
            color: #1a3a4a;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #5a7a8a;
            background: #f0f6fb;
            display: inline-block;
            padding: 4px 18px;
            border-radius: 40px;
            margin-bottom: 18px;
        }
        .last-updated i {
            margin-right: 6px;
        }
        @media (max-width: 820px) {
            body {
                padding: 0 12px;
            }
            .content {
                padding: 22px 16px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
                padding-left: 12px;
            }
            h3 {
                font-size: 1.15rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #ffffff;
                border-radius: 16px;
                padding: 16px 12px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
                border: 1px solid #e3edf5;
                margin-top: 10px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: 10px;
                font-size: 1rem;
            }
            .hamburger {
                display: block;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .form-card {
                padding: 18px 16px;
            }
            .star-rating {
                font-size: 1.5rem;
            }
            .site-footer {
                padding: 24px 16px 20px;
            }
            .footer-inner {
                flex-direction: column;
                gap: 16px;
            }
            .friend-link a {
                display: inline-block;
                margin-right: 12px;
                margin-bottom: 4px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.5rem;
            }
            .content p {
                font-size: 0.98rem;
            }
            .content .lead {
                font-size: 1.05rem;
                padding: 14px 16px;
            }
            .form-card .btn {
                width: 100%;
                justify-content: center;
            }
        }
        .text-muted {
            color: #5f7a8a;
        }
        .flex-between {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .mt-1 {
            margin-top: 0.8rem;
        }
        .mb-1 {
            margin-bottom: 0.8rem;
        }
        .gap-1 {
            gap: 0.8rem;
        }
        .fw-700 {
            font-weight: 700;
        }