*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f8f6f2;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #c0392b;
            text-decoration: none;
            transition: color 0.25s;
        }
        a:hover {
            color: #e67e22;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.04);
            border-radius: 28px;
            padding: 1.5rem 2rem 2rem;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #1a1a2e;
            margin: 0.5rem 0 1.2rem;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #2c3e50;
            margin: 2.4rem 0 1rem;
            border-left: 6px solid #c0392b;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #2c3e50;
            margin: 1.8rem 0 0.6rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #34495e;
            margin: 1.2rem 0 0.4rem;
        }
        p {
            margin-bottom: 1rem;
            color: #2d2d3a;
        }
        .lead {
            font-size: 1.2rem;
            color: #3d3d4e;
            font-weight: 400;
            background: #fef9f0;
            padding: 1.2rem 1.6rem;
            border-radius: 16px;
            border-left: 4px solid #c0392b;
            margin: 1.6rem 0;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 0.8rem 0 1rem;
            border-bottom: 2px solid #eeeae3;
            position: relative;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            background: linear-gradient(135deg, #c0392b, #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
            display: inline-block;
            transition: transform 0.3s;
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #666;
            color: #666;
            background: none;
            display: block;
            font-weight: 400;
            letter-spacing: 0.3px;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex-wrap: wrap;
        }
        .nav-bar a {
            padding: 0.5rem 1rem;
            border-radius: 40px;
            font-weight: 500;
            color: #2c3e50;
            transition: background 0.25s, color 0.25s;
            font-size: 0.92rem;
        }
        .nav-bar a:hover {
            background: #c0392b;
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: #2c3e50;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #f0ebe4;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem 0.8rem;
            padding: 0.75rem 0 0.2rem;
            font-size: 0.88rem;
            color: #777;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #bbb;
            font-weight: 700;
            margin-right: 0.4rem;
        }
        .breadcrumb a {
            color: #c0392b;
        }
        .search-wrap {
            background: #f4f0ea;
            border-radius: 60px;
            padding: 0.2rem 0.2rem 0.2rem 1.5rem;
            display: flex;
            align-items: center;
            max-width: 480px;
            margin: 1.6rem 0 2rem;
            border: 1px solid #e0d8ce;
            transition: box-shadow 0.3s;
        }
        .search-wrap:focus-within {
            box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.2);
            border-color: #c0392b;
        }
        .search-wrap i {
            color: #999;
            font-size: 1rem;
        }
        .search-wrap input {
            border: none;
            background: transparent;
            padding: 0.8rem 0.8rem;
            font-size: 1rem;
            flex: 1;
            outline: none;
            min-width: 0;
            font-family: inherit;
        }
        .search-wrap button {
            background: #c0392b;
            color: #fff;
            border: none;
            padding: 0.6rem 1.6rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            font-size: 0.95rem;
            transition: background 0.25s, transform 0.15s;
            font-family: inherit;
        }
        .search-wrap button:hover {
            background: #a93226;
            transform: scale(0.97);
        }
        .feature-image {
            margin: 1.8rem 0 2.2rem;
            border-radius: 18px;
            overflow: hidden;
            background: #f0ebe4;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.06);
        }
        .feature-image img {
            width: 100%;
            object-fit: cover;
            max-height: 420px;
        }
        .feature-image figcaption {
            padding: 0.8rem 1.2rem;
            font-size: 0.9rem;
            color: #666;
            background: #fcfaf7;
            border-top: 1px solid #eee;
        }
        .code-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 1.2rem;
            margin: 1.6rem 0;
        }
        .code-card {
            background: #fcfaf7;
            border: 1px solid #ede8e0;
            border-radius: 16px;
            padding: 1.2rem 1.4rem;
            transition: transform 0.2s, box-shadow 0.3s;
        }
        .code-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
        }
        .code-card .code {
            font-family: 'Courier New', monospace;
            font-weight: 700;
            color: #c0392b;
            font-size: 1.2rem;
            background: #f0ebe4;
            padding: 0.2rem 0.8rem;
            border-radius: 6px;
            display: inline-block;
        }
        .code-card .status {
            font-size: 0.85rem;
            color: #27ae60;
            font-weight: 600;
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.8rem 0 1.6rem;
            background: #fcfaf7;
            border-radius: 20px;
            padding: 2rem;
            border: 1px solid #ede8e0;
        }
        .feedback-section form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .feedback-section label {
            font-weight: 600;
            font-size: 0.95rem;
        }
        .feedback-section input,
        .feedback-section textarea,
        .feedback-section select {
            padding: 0.7rem 1rem;
            border: 1px solid #ddd6cc;
            border-radius: 10px;
            font-family: inherit;
            font-size: 0.95rem;
            background: #fff;
            transition: border 0.25s;
            width: 100%;
        }
        .feedback-section input:focus,
        .feedback-section textarea:focus,
        .feedback-section select:focus {
            border-color: #c0392b;
            outline: none;
            box-shadow: 0 0 0 2px rgba(192, 57, 43, 0.12);
        }
        .feedback-section textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-section .btn-submit {
            background: #c0392b;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            font-size: 0.95rem;
            transition: background 0.25s;
            align-self: flex-start;
            font-family: inherit;
        }
        .feedback-section .btn-submit:hover {
            background: #a93226;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f1c40f;
        }
        .site-footer {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #eeeae3;
            font-size: 0.95rem;
        }
        .site-footer friend-link {
            display: block;
            padding: 1rem 0 0.6rem;
            font-weight: 600;
            color: #2c3e50;
        }
        .friend-links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.6rem;
            list-style: none;
            padding: 0.4rem 0 0.8rem;
        }
        .friend-links-list a {
            color: #c0392b;
            font-weight: 500;
        }
        .copyright {
            text-align: center;
            padding: 1.2rem 0 0.4rem;
            color: #888;
            font-size: 0.88rem;
            border-top: 1px solid #eeeae3;
            margin-top: 1.2rem;
        }
        .last-updated {
            display: inline-block;
            background: #f0ebe4;
            padding: 0.3rem 1.2rem;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #666;
            margin: 0.4rem 0 1.2rem;
        }
        @media (max-width: 820px) {
            .container {
                padding: 1rem 1.2rem 1.6rem;
                border-radius: 18px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .feedback-section {
                grid-template-columns: 1fr;
                gap: 1.6rem;
                padding: 1.4rem;
            }
            .site-header {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .nav-bar {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                background: #fff;
                padding: 0.8rem 0 0.4rem;
                border-top: 1px solid #eeeae3;
                margin-top: 0.6rem;
            }
            .nav-bar.open {
                display: flex;
            }
            .nav-bar a {
                padding: 0.6rem 0.8rem;
                border-radius: 8px;
            }
            .code-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            body {
                padding: 0 0.4rem;
            }
            .container {
                padding: 0.8rem 0.8rem 1.2rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .search-wrap {
                flex-wrap: wrap;
                border-radius: 30px;
                padding: 0.3rem 0.3rem 0.3rem 1rem;
            }
            .search-wrap button {
                padding: 0.5rem 1.2rem;
                font-size: 0.85rem;
            }
            .feedback-section {
                padding: 1rem;
            }
            .star-rating label {
                font-size: 1.5rem;
            }
        }
        .highlight {
            background: linear-gradient(120deg, #fef0e0 0%, #fef0e0 40%, transparent 80%);
            padding: 0 0.3rem;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: #27ae60;
            color: #fff;
            padding: 0.1rem 0.6rem;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            vertical-align: middle;
        }
        .divider {
            height: 2px;
            background: linear-gradient(to right, #c0392b, transparent);
            margin: 2.4rem 0;
            opacity: 0.3;
        }
        .tip-box {
            background: #eaf7ee;
            border-left: 4px solid #27ae60;
            padding: 1rem 1.4rem;
            border-radius: 12px;
            margin: 1.2rem 0;
        }
        .tip-box i {
            color: #27ae60;
            margin-right: 0.5rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.4rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.7rem 1rem;
            text-align: left;
            border-bottom: 1px solid #ede8e0;
        }
        th {
            background: #f4f0ea;
            font-weight: 600;
        }
        tr:hover td {
            background: #fcf9f5;
        }
        .interview-block {
            background: #f4f0ea;
            border-radius: 16px;
            padding: 1.4rem 1.8rem;
            margin: 1.4rem 0;
            border-left: 4px solid #c0392b;
        }
        .interview-block .q {
            font-weight: 700;
            color: #c0392b;
        }
        .interview-block .a {
            margin-top: 0.3rem;
            padding-left: 0.8rem;
        }