* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f9f7f2;
            color: #2d2a24;
            line-height: 1.7;
            font-size: 1.05rem;
            padding: 0 1rem;
        }
        a {
            color: #1a6b8a;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0d3e52;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.05);
            border-radius: 28px 28px 0 0;
            overflow: hidden;
            padding: 0 2rem 2rem;
        }
        header {
            padding: 1.2rem 0 0.6rem;
            border-bottom: 2px solid #e8e2d6;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: #2d5a6d;
            background: linear-gradient(135deg, #2d5a6d, #4a8a9e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #2d5a6d;
            font-size: 1.7rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            -webkit-text-fill-color: #6b7b83;
            letter-spacing: 0.3px;
            margin-left: 0.3rem;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .nav-list li a {
            display: block;
            padding: 0.4rem 0.9rem;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.9rem;
            color: #2d2a24;
            transition: background 0.2s, color 0.2s;
        }
        .nav-list li a:hover {
            background: #2d5a6d;
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #2d5a6d;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #e8e2d6;
        }
        .breadcrumb {
            padding: 0.8rem 0 0.2rem;
            font-size: 0.85rem;
            color: #6b7b83;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem;
        }
        .breadcrumb a {
            color: #1a6b8a;
        }
        .breadcrumb span {
            color: #999;
        }
        .search-form {
            display: flex;
            gap: 0.4rem;
            max-width: 400px;
            margin: 1.2rem 0 0.8rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.6rem 1rem;
            border: 2px solid #ddd6ca;
            border-radius: 40px;
            font-size: 0.95rem;
            background: #f9f7f2;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: #2d5a6d;
        }
        .search-form button {
            padding: 0.6rem 1.4rem;
            border: none;
            border-radius: 40px;
            background: #2d5a6d;
            color: #fff;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-form button:hover {
            background: #1a3f4f;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #1f3d4a;
            margin: 1.2rem 0 0.6rem;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #2d5a6d;
            margin: 2.4rem 0 0.8rem;
            padding-bottom: 0.3rem;
            border-bottom: 3px solid #e8e2d6;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #3a4f5a;
            margin: 1.8rem 0 0.6rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #4a5f6a;
            margin: 1.2rem 0 0.4rem;
        }
        p {
            margin-bottom: 1.1rem;
        }
        .last-updated {
            font-size: 0.85rem;
            color: #8a7e72;
            margin-bottom: 1.8rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .last-updated i {
            color: #b8a99a;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.2rem;
        }
        .feature-img {
            border-radius: 20px;
            margin: 1.5rem 0;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        }
        .highlight-box {
            background: #f1efe9;
            border-left: 6px solid #2d5a6d;
            padding: 1.2rem 1.6rem;
            border-radius: 0 16px 16px 0;
            margin: 1.6rem 0;
        }
        ul,
        ol {
            margin: 0.6rem 0 1.4rem 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .emoji-big {
            font-size: 1.3rem;
        }
        .interaction-area {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.8rem 0 1.8rem;
            padding: 2rem 0;
            border-top: 2px solid #e8e2d6;
            border-bottom: 2px solid #e8e2d6;
        }
        .interaction-area form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .interaction-area form label {
            font-weight: 600;
            font-size: 0.95rem;
        }
        .interaction-area form input,
        .interaction-area form textarea,
        .interaction-area form select {
            padding: 0.6rem 1rem;
            border: 2px solid #ddd6ca;
            border-radius: 12px;
            font-size: 0.95rem;
            background: #f9f7f2;
            outline: none;
            transition: border 0.2s;
            font-family: inherit;
        }
        .interaction-area form input:focus,
        .interaction-area form textarea:focus,
        .interaction-area form select:focus {
            border-color: #2d5a6d;
        }
        .interaction-area form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .interaction-area form button {
            padding: 0.7rem 1.6rem;
            border: none;
            border-radius: 40px;
            background: #2d5a6d;
            color: #fff;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            align-self: flex-start;
        }
        .interaction-area form button:hover {
            background: #1a3f4f;
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #e2cba0;
            cursor: pointer;
            direction: rtl;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            cursor: pointer;
            transition: color 0.15s;
            color: #ddd6ca;
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label,
        .rating-stars input:checked~label {
            color: #f5c542;
        }
        footer {
            margin-top: 3rem;
            padding: 1.8rem 0 1.2rem;
            border-top: 2px solid #e8e2d6;
        }
        friend-link {
            display: block;
            padding: 0.8rem 0 0.2rem;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            padding: 0.2rem 0.6rem;
            margin: 0.2rem 0.2rem;
            background: #f1efe9;
            border-radius: 30px;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
        }
        friend-link a:hover {
            background: #2d5a6d;
            color: #fff;
            text-decoration: none;
        }
        .copyright {
            font-size: 0.85rem;
            color: #8a7e72;
            margin-top: 1.2rem;
            text-align: center;
            padding-top: 0.8rem;
            border-top: 1px solid #e8e2d6;
        }
        @media (max-width: 820px) {
            .container {
                padding: 0 1rem 1.5rem;
                border-radius: 16px 16px 0 0;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .interaction-area {
                grid-template-columns: 1fr;
                gap: 1.6rem;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #fff;
                padding: 0.8rem 0;
                border-radius: 16px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                position: absolute;
                top: 100%;
                left: 0;
                z-index: 100;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                padding: 0.7rem 1.4rem;
            }
            .hamburger {
                display: block;
            }
            .nav-wrapper {
                position: relative;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .my-logo small {
                font-size: 0.6rem;
            }
        }
        @media (max-width: 480px) {
            body {
                padding: 0 0.4rem;
            }
            .container {
                padding: 0 0.8rem 1.2rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
            .feature-img {
                border-radius: 12px;
            }
        }
        .scroll-margin {
            scroll-margin-top: 1.2rem;
        }
        .btn-icon-gap i {
            margin-right: 0.4rem;
        }
        .inline-link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            margin: 0.8rem 0;
            list-style: none;
        }
        .inline-link-list li a {
            font-weight: 500;
            background: #f1efe9;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.9rem;
            transition: background 0.2s, color 0.2s;
        }
        .inline-link-list li a:hover {
            background: #2d5a6d;
            color: #fff;
            text-decoration: none;
        }
        .hidden-schema {
            display: none;
        }