* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f6f9fc;
            color: #1a2a3a;
            line-height: 1.7;
            padding: 0 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.04);
            border-radius: 24px;
            padding: 1.5rem 2rem 2rem;
            margin-top: 1rem;
            margin-bottom: 2rem;
        }
        .my-logo {
            display: inline-block;
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f7971e, #ffd200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            -webkit-text-fill-color: #5a6b7b;
            color: #5a6b7b;
            background: none;
            letter-spacing: 0.2px;
        }
        .header-top {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 0.5rem 0 1rem 0;
            border-bottom: 2px solid #eef3f7;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #1a2a3a;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #eef3f7;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            align-items: center;
            padding: 0.8rem 0 0.2rem 0;
        }
        .main-nav a {
            text-decoration: none;
            color: #1a2a3a;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a:focus-visible {
            border-bottom-color: #f7971e;
            color: #b85e00;
        }
        .main-nav a i {
            margin-right: 5px;
            color: #f7971e;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            padding: 0.6rem 0 0.2rem 0;
            font-size: 0.85rem;
            color: #5a6b7b;
            background: #f6f9fc;
            border-radius: 12px;
            padding: 0.5rem 1rem;
            margin: 0.5rem 0 1.2rem 0;
        }
        .breadcrumb a {
            color: #1a2a3a;
            text-decoration: none;
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 6px;
            color: #b0c4d4;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 1rem 0 1.2rem 0;
            background: linear-gradient(135deg, #1a2a3a, #f7971e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 2.2rem 0 1rem 0;
            padding-bottom: 0.4rem;
            border-bottom: 3px solid #f7971e;
            color: #1a2a3a;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 1.6rem 0 0.6rem 0;
            color: #2c3e50;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 1.2rem 0 0.4rem 0;
            color: #3d5166;
        }
        p {
            margin-bottom: 1rem;
            font-size: 1.05rem;
            color: #2a3a4a;
        }
        .content-img {
            width: 100%;
            max-width: 780px;
            height: auto;
            border-radius: 20px;
            margin: 1.5rem auto;
            display: block;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .content-img:hover {
            transform: scale(1.01);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
        }
        .highlight-box {
            background: #fef9e7;
            border-left: 6px solid #f7971e;
            padding: 1.2rem 1.8rem;
            border-radius: 12px;
            margin: 1.4rem 0;
        }
        .highlight-box strong {
            color: #b85e00;
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.2rem;
            margin: 1.4rem 0;
        }
        .data-card {
            background: #f6f9fc;
            padding: 1.2rem 1rem;
            border-radius: 16px;
            text-align: center;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            transition: transform 0.2s;
        }
        .data-card:hover {
            transform: translateY(-3px);
        }
        .data-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #f7971e;
            display: block;
        }
        .data-card .label {
            font-size: 0.9rem;
            color: #5a6b7b;
            font-weight: 500;
        }
        .review-card {
            background: #fafcfe;
            border: 1px solid #e8edf2;
            padding: 1.2rem 1.5rem;
            border-radius: 16px;
            margin: 1rem 0;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
        }
        .review-card .stars {
            color: #ffc107;
            letter-spacing: 2px;
        }
        .review-card .author {
            font-weight: 600;
            color: #1a2a3a;
        }
        .btn {
            display: inline-block;
            background: #f7971e;
            color: #fff;
            padding: 0.6rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            text-decoration: none;
            transition: background 0.2s, transform 0.15s;
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }
        .btn:hover {
            background: #d97e00;
            transform: scale(1.02);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid #f7971e;
            color: #f7971e;
        }
        .btn-outline:hover {
            background: #f7971e;
            color: #fff;
        }
        .form-section {
            background: #f6f9fc;
            padding: 1.8rem 2rem;
            border-radius: 20px;
            margin: 2rem 0;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            font-weight: 600;
            display: block;
            margin-bottom: 0.3rem;
            color: #1a2a3a;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dce4ec;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            transition: border-color 0.2s;
            background: #fff;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #f7971e;
            outline: none;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            cursor: pointer;
            color: #dce4ec;
            transition: color 0.2s;
        }
        .star-rating i.active,
        .star-rating i:hover,
        .star-rating i:hover~i {
            color: #ffc107;
        }
        .star-rating i {
            transition: color 0.15s;
        }
        .footer-area {
            margin-top: 2.5rem;
            padding-top: 1.8rem;
            border-top: 3px solid #eef3f7;
        }
        friend-link {
            display: block;
            background: #f6f9fc;
            padding: 1.2rem 1.8rem;
            border-radius: 16px;
            font-size: 1rem;
            margin: 0.8rem 0;
        }
        friend-link a {
            color: #1a2a3a;
            text-decoration: none;
            font-weight: 500;
            padding: 0.2rem 0.4rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: #f7971e20;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding: 1.2rem 0 0.2rem 0;
            color: #5a6b7b;
            font-size: 0.9rem;
            border-top: 1px solid #e8edf2;
            margin-top: 1.2rem;
        }
        .copyright strong {
            color: #1a2a3a;
        }
        @media (max-width: 768px) {
            .container {
                padding: 1rem 1.2rem;
                border-radius: 16px;
                margin-top: 0.6rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .my-logo {
                font-size: 1.7rem;
            }
            .header-top {
                flex-wrap: wrap;
            }
            .hamburger {
                display: inline-block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.3rem 0;
                padding: 0.6rem 0 0.8rem 0;
                border-top: 1px solid #eef3f7;
                margin-top: 0.4rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.5rem 0.2rem;
                font-size: 1rem;
                border-bottom: 1px solid #f0f4f8;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 0.4rem 0.8rem;
                flex-wrap: wrap;
            }
            .data-grid {
                grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
            }
            .form-section {
                padding: 1.2rem 1rem;
            }
            .star-rating {
                font-size: 1.5rem;
            }
            friend-link {
                padding: 0.8rem 1rem;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0.8rem 0.9rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .btn {
                padding: 0.5rem 1.2rem;
                font-size: 0.9rem;
            }
        }
        .tag {
            display: inline-block;
            background: #f7971e10;
            color: #b85e00;
            padding: 0.2rem 0.9rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            margin: 0.2rem 0.2rem;
        }
        .emoji-big {
            font-size: 1.4rem;
        }
        .last-updated {
            color: #5a6b7b;
            font-size: 0.85rem;
            text-align: right;
            margin-top: 0.2rem;
            font-style: italic;
        }
        a {
            color: #d97e00;
            transition: color 0.2s;
        }
        a:hover {
            color: #b85e00;
        }
        .fa-ul li {
            margin-bottom: 0.5rem;
        }
        blockquote {
            border-left: 4px solid #f7971e;
            padding: 0.8rem 1.4rem;
            margin: 1rem 0;
            background: #fafcfe;
            border-radius: 0 12px 12px 0;
            color: #2a3a4a;
            font-style: italic;
        }