*,
        *::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;
            line-height: 1.8;
            color: #1e293b;
            background: #f8fafc;
            padding: 0 1rem;
            max-width: 1280px;
            margin: 0 auto;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #0f3b5e;
            text-decoration: none;
            transition: color 0.2s, border-color 0.2s;
        }
        a:hover {
            color: #ba2d2d;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0b2a41;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.5rem;
            border-left: 6px solid #ba2d2d;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 3px solid #e2e8f0;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e4a6b;
        }
        h4 {
            font-size: 1.15rem;
            color: #2c5f7c;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            color: #1e293b;
        }
        strong {
            color: #0b2a41;
        }
        .container {
            background: #ffffff;
            border-radius: 20px;
            padding: 1.5rem 2rem;
            margin: 1.5rem 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 0;
            border-bottom: 2px solid #e2e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #0b2a41;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            color: #ba2d2d;
            font-size: 2rem;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #ba2d2d;
        }
        .my-logo small {
            font-size: 0.8rem;
            font-weight: 400;
            color: #64748b;
            letter-spacing: 0;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #0b2a41;
            cursor: pointer;
            padding: 0.25rem 0.5rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #f1f5f9;
        }
        nav {
            display: flex;
            flex-wrap: wrap;
            gap: 0.25rem 1.2rem;
            align-items: center;
        }
        nav a {
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            color: #1e293b;
        }
        nav a:hover {
            border-bottom-color: #ba2d2d;
            text-decoration: none;
            color: #ba2d2d;
        }
        nav a.active {
            border-bottom-color: #ba2d2d;
            color: #ba2d2d;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.8rem 0 0.2rem;
            margin: 0;
            font-size: 0.9rem;
            color: #64748b;
            width: 100%;
        }
        .breadcrumb li {
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.6rem;
            color: #94a3b8;
        }
        .breadcrumb a {
            color: #0f3b5e;
        }
        .breadcrumb a:hover {
            color: #ba2d2d;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            max-width: 600px;
            margin: 1.5rem 0 2rem;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 0.8rem 1.2rem;
            border: 2px solid #e2e8f0;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s, box-shadow 0.2s;
            background: #f8fafc;
        }
        .search-form input:focus {
            border-color: #ba2d2d;
            box-shadow: 0 0 0 4px rgba(186, 45, 45, 0.1);
        }
        .search-form button {
            padding: 0.8rem 1.8rem;
            background: #0b2a41;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #ba2d2d;
            transform: scale(1.02);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.5rem 0;
        }
        .card {
            background: #f8fafc;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            border: 1px solid #e2e8f0;
            transition: box-shadow 0.2s;
        }
        .card:hover {
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
        }
        .card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.3rem;
        }
        .card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .card textarea,
        .card input {
            padding: 0.8rem 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            resize: vertical;
            outline: none;
            transition: border 0.2s;
            background: #fff;
        }
        .card textarea:focus,
        .card input:focus {
            border-color: #ba2d2d;
        }
        .card textarea {
            min-height: 90px;
        }
        .card button {
            padding: 0.7rem 1.8rem;
            background: #0b2a41;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
        }
        .card button:hover {
            background: #ba2d2d;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            font-size: 1.8rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #cbd5e1;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f59e0b;
        }
        .link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            padding: 1rem 0;
            margin: 1rem 0;
            list-style: none;
        }
        .link-list li {
            margin: 0;
        }
        .link-list a {
            background: #f1f5f9;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: #1e293b;
            border: 1px solid #e2e8f0;
            transition: background 0.2s, color 0.2s, border-color 0.2s;
        }
        .link-list a:hover {
            background: #ba2d2d;
            color: #fff;
            border-color: #ba2d2d;
            text-decoration: none;
        }
        footer {
            margin-top: 3rem;
            padding: 2.5rem 0 1.5rem;
            border-top: 2px solid #e2e8f0;
        }
        friend-link {
            display: block;
            padding: 1.2rem 0;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            margin: 0.2rem 0.4rem;
            background: #f1f5f9;
            border-radius: 20px;
            border: 1px solid #e2e8f0;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
        }
        friend-link a:hover {
            background: #0b2a41;
            color: #fff;
            text-decoration: none;
            border-color: #0b2a41;
        }
        .copyright {
            text-align: center;
            color: #64748b;
            font-size: 0.9rem;
            padding: 1rem 0 0.5rem;
            border-top: 1px solid #e2e8f0;
            margin-top: 1rem;
        }
        .copyright strong {
            color: #0b2a41;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            background: #f1f5f9;
        }
        .featured-image img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.8rem 1.2rem;
            font-size: 0.9rem;
            color: #64748b;
            font-style: italic;
            background: #f8fafc;
        }
        @media (max-width: 900px) {
            body {
                padding: 0 0.8rem;
            }
            .container {
                padding: 1rem 1.2rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo small {
                font-size: 0.7rem;
            }
        }
        @media (max-width: 700px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 1rem 0 0.5rem;
                gap: 0.5rem;
                border-top: 1px solid #e2e8f0;
                margin-top: 0.8rem;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 0.5rem 1rem;
                border-radius: 8px;
                width: 100%;
            }
            nav a:hover {
                background: #f1f5f9;
                border-bottom-color: transparent;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .card {
                padding: 1.2rem 1.2rem;
            }
            .star-rating {
                font-size: 1.5rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .breadcrumb li+li::before {
                margin: 0 0.3rem;
            }
        }
        @media (min-width: 701px) {
            nav {
                display: flex !important;
            }
        }
        .last-updated {
            display: inline-block;
            background: #f1f5f9;
            padding: 0.3rem 1.2rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #64748b;
            margin-bottom: 1.2rem;
        }
        .last-updated i {
            margin-right: 0.4rem;
        }
        .emoji-big {
            font-size: 1.3em;
            margin-right: 0.2em;
        }
        .highlight-box {
            background: #f0f7ff;
            border-left: 5px solid #0b2a41;
            padding: 1.5rem 2rem;
            border-radius: 0 12px 12px 0;
            margin: 1.8rem 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .tip {
            background: #fffbeb;
            border-left: 5px solid #f59e0b;
            padding: 1rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 1.5rem 0;
        }
        @media (max-width: 700px) {
            .two-col {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            background: #f8fafc;
            border-radius: 12px;
            overflow: hidden;
        }
        th,
        td {
            padding: 0.8rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e2e8f0;
        }
        th {
            background: #0b2a41;
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f1f5f9;
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #0b2a41;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
            cursor: pointer;
            transition: background 0.2s, transform 0.2s;
            border: none;
            z-index: 100;
        }
        .scroll-top:hover {
            background: #ba2d2d;
            transform: scale(1.05);
        }
        @media (max-width: 500px) {
            .scroll-top {
                bottom: 1rem;
                right: 1rem;
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
        }