*,
        *::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;
            background: #f5f7fa;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0 16px;
            max-width: 1200px;
            margin: 0 auto;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #c0392b;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e74c3c;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
            color: #0b1a2a;
            font-weight: 700;
        }
        h1 {
            font-size: 2.2rem;
            border-left: 6px solid #e67e22;
            padding-left: 20px;
            margin-top: 1rem;
        }
        h2 {
            font-size: 1.7rem;
            border-bottom: 3px solid #e67e22;
            padding-bottom: 8px;
        }
        h3 {
            font-size: 1.35rem;
            color: #2c3e50;
        }
        h4 {
            font-size: 1.15rem;
            color: #34495e;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            background: #ffffff;
            border-radius: 24px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
            padding: 24px 28px 40px;
            margin: 20px 0 40px;
        }
        @media (max-width: 640px) {
            body {
                padding: 0 10px;
            }
            .container {
                padding: 16px 16px 32px;
                border-radius: 16px;
            }
            h1 {
                font-size: 1.7rem;
                padding-left: 14px;
            }
            h2 {
                font-size: 1.35rem;
            }
            h3 {
                font-size: 1.15rem;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 12px;
            border-bottom: 2px solid #e0e6ed;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #e67e22, #d35400);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            color: #7f8c8d;
            background: none;
            -webkit-background-clip: unset;
            background-clip: unset;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .nav-toggle {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #2c3e50;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #ecf0f1;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 18px;
            align-items: center;
        }
        .main-nav a {
            font-weight: 500;
            color: #2c3e50;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
            font-size: 0.95rem;
        }
        .main-nav a:hover {
            border-bottom-color: #e67e22;
            color: #e67e22;
            text-decoration: none;
        }
        .main-nav .active-link {
            border-bottom-color: #e67e22;
            color: #e67e22;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            font-size: 0.85rem;
            color: #7f8c8d;
            padding: 10px 0 6px;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #bdc3c7;
            font-size: 1.2rem;
            margin-right: 6px;
        }
        .breadcrumb a {
            color: #5d6d7e;
        }
        .breadcrumb a:hover {
            color: #e67e22;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 16px 0 8px;
                gap: 4px;
                border-top: 1px solid #e0e6ed;
                margin-top: 12px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 10px 0;
                border-bottom: 1px solid #f0f2f5;
                width: 100%;
            }
            .my-logo {
                font-size: 1.5rem;
            }
        }
        .search-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin: 20px 0 24px;
            background: #f0f4f9;
            padding: 12px 18px;
            border-radius: 60px;
            align-items: center;
        }
        .search-wrap i {
            color: #95a5a6;
            font-size: 1.1rem;
        }
        .search-wrap input {
            flex: 1;
            min-width: 160px;
            border: none;
            background: transparent;
            font-size: 1rem;
            padding: 8px 4px;
            outline: none;
            font-family: inherit;
            color: #1e2a3a;
        }
        .search-wrap input::placeholder {
            color: #95a5a6;
            font-style: italic;
        }
        .search-wrap button {
            background: #e67e22;
            border: none;
            color: #fff;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 40px;
            cursor: pointer;
            font-size: 0.95rem;
            transition: 0.2s;
            font-family: inherit;
        }
        .search-wrap button:hover {
            background: #d35400;
            transform: scale(1.02);
        }
        @media (max-width: 480px) {
            .search-wrap {
                border-radius: 28px;
                padding: 10px 14px;
            }
            .search-wrap button {
                padding: 6px 16px;
                font-size: 0.85rem;
            }
        }
        .featured-figure {
            margin: 28px 0 32px;
            border-radius: 16px;
            overflow: hidden;
            background: #ecf0f1;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
        }
        .featured-figure figcaption {
            padding: 10px 18px 14px;
            font-size: 0.9rem;
            color: #5d6d7e;
            font-style: italic;
            background: #fafcfd;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0 28px;
            font-size: 0.95rem;
            background: #fafcfd;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: #1e2a3a;
            color: #fff;
            font-weight: 600;
            padding: 12px 16px;
            text-align: left;
        }
        .data-table td {
            padding: 10px 16px;
            border-bottom: 1px solid #e8ecf0;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #fef9f4;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 32px 0 20px;
        }
        .feedback-card {
            background: #f8faff;
            border-radius: 20px;
            padding: 20px 24px 28px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #eef2f7;
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 12px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 10px 14px;
            border: 1px solid #d5dce6;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            background: #fff;
            transition: 0.2s;
            outline: none;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #e67e22;
            box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.15);
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card .star-select {
            display: flex;
            gap: 8px;
            align-items: center;
            font-size: 1.4rem;
            color: #f1c40f;
        }
        .feedback-card .star-select select {
            font-size: 1rem;
            padding: 6px 12px;
        }
        .btn-submit {
            background: #e67e22;
            color: #fff;
            border: none;
            padding: 10px 20px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            font-size: 0.95rem;
            transition: 0.2s;
            font-family: inherit;
            align-self: flex-start;
        }
        .btn-submit:hover {
            background: #d35400;
            transform: translateY(-1px);
        }
        @media (max-width: 720px) {
            .feedback-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .feedback-card {
                padding: 18px 16px 22px;
            }
        }
        .link-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            padding: 18px 0 10px;
            list-style: none;
        }
        .link-cloud li a {
            background: #ecf0f1;
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.9rem;
            color: #2c3e50;
            transition: 0.2s;
            display: inline-block;
        }
        .link-cloud li a:hover {
            background: #e67e22;
            color: #fff;
            text-decoration: none;
        }
        .site-footer {
            margin-top: 48px;
            padding-top: 28px;
            border-top: 3px solid #e0e6ed;
            font-size: 0.9rem;
            color: #5d6d7e;
        }
        .site-footer friend-link {
            display: block;
            background: #f0f4f9;
            padding: 16px 20px;
            border-radius: 16px;
            margin-bottom: 18px;
            font-weight: 500;
        }
        .site-footer friend-link a {
            color: #2c3e50;
            margin: 0 12px 0 4px;
        }
        .site-footer friend-link a:hover {
            color: #e67e22;
        }
        .copyright {
            text-align: center;
            padding: 16px 0 8px;
            font-size: 0.85rem;
            color: #95a5a6;
        }
        .copyright strong {
            color: #2c3e50;
        }
        .badge {
            display: inline-block;
            background: #e67e22;
            color: #fff;
            font-size: 0.7rem;
            padding: 2px 12px;
            border-radius: 40px;
            letter-spacing: 0.3px;
            font-weight: 600;
        }
        .last-update {
            display: block;
            text-align: right;
            font-size: 0.85rem;
            color: #95a5a6;
            margin-top: 10px;
            padding-top: 10px;
            border-top: 1px dashed #dce3ed;
        }
        .highlight-box {
            background: #fef9f4;
            border-left: 5px solid #e67e22;
            padding: 16px 22px;
            border-radius: 0 12px 12px 0;
            margin: 22px 0;
        }
        .emoji-big {
            font-size: 1.8rem;
            vertical-align: middle;
        }
        .pro-tip {
            background: #eafaf1;
            border-radius: 16px;
            padding: 16px 22px;
            margin: 20px 0;
            border: 1px solid #d5f5e3;
        }
        .pro-tip::before {
            content: "💡 Pro Tip: ";
            font-weight: 700;
            color: #1e8449;
        }
        @media (max-width: 480px) {
            .highlight-box {
                padding: 12px 16px;
            }
            .data-table {
                font-size: 0.8rem;
            }
            .data-table th,
            .data-table td {
                padding: 8px 10px;
            }
        }