*,
        *::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: #f6f8fc;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #e94560;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #c23152;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            color: #0f3460;
            margin-top: 1.8em;
            margin-bottom: 0.6em;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.4em;
            border-left: 6px solid #e94560;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.7rem;
            border-bottom: 2px solid #e0e7f0;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.3rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin-bottom: 1.5rem;
            padding-left: 1.6rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        strong {
            color: #0f3460;
        }
        em {
            color: #e94560;
        }
        blockquote {
            border-left: 5px solid #e94560;
            background: #f0f4ff;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
        }
        hr {
            border: 0;
            height: 2px;
            background: linear-gradient(90deg, #e94560, #0f3460, transparent);
            margin: 2.5rem 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            padding: 0 1.5rem 3rem;
            border-radius: 0 0 24px 24px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
        }
        header {
            background: linear-gradient(145deg, #0f3460, #1a1a5e);
            color: #fff;
            padding: 1.2rem 1.8rem;
            border-radius: 0 0 24px 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            text-shadow: 0 2px 8px rgba(233, 69, 96, 0.3);
        }
        .my-logo span {
            color: #e94560;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            display: block;
            opacity: 0.75;
            letter-spacing: 0.3px;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.92;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex-wrap: wrap;
        }
        nav a {
            color: #eef2ff;
            padding: 0.45rem 0.9rem;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
        }
        nav a:hover {
            background: rgba(233, 69, 96, 0.25);
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            font-size: 1.6rem;
            padding: 0.2rem 0.7rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #f0f4ff;
            padding: 0.6rem 1.2rem;
            border-radius: 40px;
            font-size: 0.85rem;
            margin: 1rem 0 0.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb a {
            color: #0f3460;
        }
        .breadcrumb a:hover {
            color: #e94560;
        }
        .breadcrumb span {
            color: #6b7a8f;
        }
        .search-box {
            display: flex;
            gap: 0.5rem;
            margin: 1.8rem 0 2rem;
            max-width: 600px;
        }
        .search-box input {
            flex: 1;
            padding: 0.75rem 1.2rem;
            border: 2px solid #dce3ef;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.25s;
        }
        .search-box input:focus {
            border-color: #e94560;
        }
        .search-box button {
            padding: 0.75rem 1.6rem;
            background: #e94560;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
        }
        .search-box button:hover {
            background: #c23152;
            transform: scale(1.02);
        }
        .feature-image {
            margin: 2rem 0 2.2rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        }
        .feature-image figcaption {
            background: #f0f4ff;
            padding: 0.6rem 1.2rem;
            font-size: 0.9rem;
            color: #2c3e50;
            text-align: center;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.5rem 0;
        }
        .feedback-card {
            background: #f9faff;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            border: 1px solid #e8edf6;
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .feedback-card textarea,
        .feedback-card input {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dce3ef;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            margin-bottom: 0.8rem;
            resize: vertical;
            transition: border 0.25s;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus {
            border-color: #e94560;
            outline: none;
        }
        .feedback-card button {
            padding: 0.65rem 1.8rem;
            background: #0f3460;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
        }
        .feedback-card button:hover {
            background: #1a4a7a;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            cursor: pointer;
            margin-bottom: 0.8rem;
            direction: rtl;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #dce3ef;
            transition: color 0.2s, transform 0.1s;
            cursor: pointer;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f5b342;
            transform: scale(1.05);
        }
        friend-link {
            display: block;
            background: #f0f4ff;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            margin: 2.5rem 0 1.5rem;
            border: 1px solid #dce3ef;
        }
        friend-link h3 {
            margin-top: 0;
            font-size: 1.2rem;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
        }
        friend-link li a {
            background: #fff;
            padding: 0.3rem 1rem;
            border-radius: 40px;
            border: 1px solid #dce3ef;
            font-size: 0.9rem;
            transition: background 0.2s, border-color 0.2s;
            display: inline-block;
        }
        friend-link li a:hover {
            background: #e94560;
            color: #fff;
            border-color: #e94560;
            text-decoration: none;
        }
        footer {
            text-align: center;
            padding: 2rem 0 1rem;
            border-top: 2px solid #e0e7f0;
            margin-top: 2rem;
            font-size: 0.9rem;
            color: #5a6a7e;
        }
        footer p {
            margin-bottom: 0.3rem;
        }
        @media (max-width: 768px) {
            header {
                flex-direction: column;
                align-items: stretch;
                gap: 0.8rem;
                padding: 1rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .hamburger {
                display: block;
                align-self: flex-end;
                position: absolute;
                top: 1rem;
                right: 1rem;
            }
            nav {
                display: none;
                flex-direction: column;
                background: rgba(15, 52, 96, 0.95);
                padding: 1rem;
                border-radius: 16px;
                margin-top: 0.5rem;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 0.5rem 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 0 0.8rem 2rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 0.5rem 0.9rem;
            }
            .star-rating {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .search-box {
                flex-direction: column;
            }
            .search-box button {
                width: 100%;
            }
            .feedback-card {
                padding: 1.2rem;
            }
            friend-link {
                padding: 1.2rem;
            }
        }
        .text-muted {
            color: #6b7a8f;
            font-size: 0.9rem;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .tag {
            display: inline-block;
            background: #eef2ff;
            padding: 0.15rem 0.7rem;
            border-radius: 40px;
            font-size: 0.8rem;
            color: #0f3460;
            margin-right: 0.3rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.6rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e0e7f0;
        }
        th {
            background: #0f3460;
            color: #fff;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background: #f9faff;
        }