* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f9f7f4;
            color: #2c2c2c;
            line-height: 1.7;
            font-size: 16px;
            padding: 0 1rem;
        }
        a {
            color: #1a6b8a;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #0e4a5f;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.04);
            border-radius: 24px;
            padding: 1.5rem 2rem 2rem;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0 0.5rem;
            border-bottom: 2px solid #eae6e0;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(145deg, #1a6b8a, #0e4a5f);
            -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-weight: 400;
            font-size: 0.9rem;
            -webkit-text-fill-color: #5a7a8a;
            color: #5a7a8a;
            background: none;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .nav-bar a {
            font-weight: 600;
            font-size: 0.95rem;
            color: #2c2c2c;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .nav-bar a:hover {
            border-bottom-color: #1a6b8a;
            color: #1a6b8a;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1a6b8a;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            transition: 0.2s;
        }
        .hamburger:hover {
            color: #0e4a5f;
        }
        .nav-mobile {
            display: none;
            width: 100%;
            flex-direction: column;
            background: #f4f1ec;
            border-radius: 16px;
            padding: 1rem 1.2rem;
            margin-top: 0.8rem;
            gap: 0.6rem;
        }
        .nav-mobile a {
            font-weight: 600;
            color: #2c2c2c;
            padding: 0.4rem 0;
            border-bottom: 1px solid #ddd6ce;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 0.8rem;
            font-size: 0.85rem;
            padding: 0.8rem 0 0.2rem;
            color: #6b6b6b;
            list-style: none;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #b0a89e;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #1a6b8a;
        }
        .hero {
            margin: 1.5rem 0 2.5rem;
            text-align: center;
            padding: 2rem 1rem;
            background: linear-gradient(135deg, #eef4f7, #e6edea);
            border-radius: 24px;
        }
        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0e3d4f;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 0.8rem;
        }
        .hero h1 i {
            color: #2a8cba;
            margin-right: 0.3rem;
        }
        .hero p {
            font-size: 1.2rem;
            color: #3d5a6a;
            max-width: 750px;
            margin: 0 auto 1rem;
        }
        .hero .meta {
            font-size: 0.9rem;
            color: #6a7e8a;
        }
        .content {
            padding: 1rem 0 2rem;
        }
        .content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0e3d4f;
            margin-top: 3rem;
            margin-bottom: 1rem;
            border-left: 5px solid #2a8cba;
            padding-left: 1.2rem;
        }
        .content h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1a5a6e;
            margin-top: 2.2rem;
            margin-bottom: 0.8rem;
        }
        .content h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2a6a7e;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        .content p {
            margin-bottom: 1.2rem;
            font-size: 1.02rem;
            color: #2f2f2f;
        }
        .content ul,
        .content ol {
            margin: 1rem 0 1.5rem 1.8rem;
        }
        .content li {
            margin-bottom: 0.5rem;
            font-size: 1.02rem;
        }
        .highlight-box {
            background: #f0f5f8;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 1.8rem 0;
            border-left: 6px solid #2a8cba;
        }
        .highlight-box strong {
            color: #0e3d4f;
        }
        .feature-img {
            margin: 2rem 0;
            border-radius: 16px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
        }
        .link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
            background: #f4f1ec;
            padding: 1.2rem 1.8rem;
            border-radius: 16px;
            margin: 1.8rem 0;
            list-style: none;
        }
        .link-list li a {
            font-weight: 600;
            font-size: 0.95rem;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 3rem 0;
        }
        .interactive-card {
            background: #f8f6f3;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
        }
        .interactive-card h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: #0e3d4f;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .interactive-card form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1rem;
        }
        .interactive-card input,
        .interactive-card textarea,
        .interactive-card select {
            padding: 0.8rem 1rem;
            border: 2px solid #ddd6ce;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            background: #fff;
            transition: border 0.2s;
        }
        .interactive-card input:focus,
        .interactive-card textarea:focus,
        .interactive-card select:focus {
            border-color: #2a8cba;
            outline: none;
        }
        .interactive-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .interactive-card .btn {
            background: #1a6b8a;
            color: #fff;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
            align-self: flex-start;
        }
        .interactive-card .btn:hover {
            background: #0e4a5f;
            transform: translateY(-2px);
        }
        .interactive-card .btn i {
            margin-right: 0.4rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #d4c8b8;
            cursor: pointer;
            flex-wrap: wrap;
        }
        .rating-stars .star.active {
            color: #f0b800;
        }
        footer {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #eae6e0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 2rem;
        }
        friend-link {
            display: block;
            font-style: normal;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.8rem;
            margin-top: 0.5rem;
        }
        friend-link ul li a {
            font-weight: 600;
            color: #1a6b8a;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 1.2rem;
            border-top: 1px solid #e0d8d0;
            text-align: center;
            font-size: 0.9rem;
            color: #6a6a6a;
        }
        .copyright strong {
            color: #2c2c2c;
        }
        @media (max-width: 820px) {
            .container {
                padding: 1rem 1.2rem 1.5rem;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .nav-bar a {
                display: none;
            }
            .hamburger {
                display: inline-block;
            }
            .nav-mobile.open {
                display: flex;
            }
            .content h2 {
                font-size: 1.6rem;
            }
            .content h3 {
                font-size: 1.3rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            body {
                padding: 0 0.5rem;
            }
            .container {
                padding: 0.8rem 1rem 1.2rem;
                border-radius: 16px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .rating-stars {
                font-size: 1.4rem;
            }
        }
        .smooth-scroll {
            scroll-behavior: smooth;
        }