*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            background: #0b0e14;
            color: #e8edf5;
            line-height: 1.7;
            padding: 0;
            margin: 0;
            min-height: 100vh;
        }
        a {
            color: #ffb347;
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: #ffd700;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #f5f9ff;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 2px solid #2a3346;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.35rem;
            color: #ffd966;
        }
        h4 {
            font-size: 1.1rem;
            color: #c0d0f0;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: #121821;
            border-bottom: 2px solid #2a3346;
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 12px 0;
            gap: 10px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #ffb347, #ff7e5f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: transform 0.2s ease;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #ffb347;
            font-size: 1.6rem;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #cdd9f0;
            padding: 6px 14px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background: #2a3346;
            color: #ffd966;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid #3f4a5e;
            color: #e8edf5;
            font-size: 1.6rem;
            padding: 4px 12px;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #2a3346;
        }
        .nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #1a2330;
            padding: 10px 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #2a3346;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #6a7a94;
        }
        .breadcrumb a {
            color: #8ea4c0;
        }
        .breadcrumb a:hover {
            color: #ffb347;
        }
        .breadcrumb .current {
            color: #ffd966;
            font-weight: 600;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0 50px;
        }
        @media(max-width:860px) {
            .main-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        .article-body {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 90px;
            align-self: start;
        }
        @media(max-width:860px) {
            .sidebar {
                position: static;
            }
        }
        .side-card {
            background: #151e2b;
            border-radius: 16px;
            padding: 20px;
            margin-bottom: 24px;
            border: 1px solid #263040;
            transition: box-shadow 0.3s;
        }
        .side-card:hover {
            box-shadow: 0 8px 30px rgba(255, 180, 60, 0.08);
        }
        .side-card h4 {
            font-size: 1.1rem;
            margin-top: 0;
            margin-bottom: 14px;
            border-bottom: 1px solid #2a3346;
            padding-bottom: 8px;
            color: #ffd966;
        }
        .side-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .side-link-list li {
            margin-bottom: 6px;
        }
        .side-link-list a {
            display: block;
            padding: 6px 0;
            border-bottom: 1px dashed #1f2a3a;
            font-size: 0.9rem;
        }
        .side-link-list a i {
            margin-right: 8px;
            color: #ffb347;
            width: 18px;
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 6px;
            margin-top: 6px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 14px;
            border-radius: 40px;
            border: 1px solid #2f3c50;
            background: #0d131e;
            color: #e8edf5;
            font-size: 0.9rem;
            outline: none;
            transition: border 0.25s;
        }
        .search-form input:focus {
            border-color: #ffb347;
        }
        .search-form button {
            background: #ffb347;
            border: none;
            border-radius: 40px;
            padding: 0 18px;
            color: #0b0e14;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 0.9rem;
        }
        .search-form button:hover {
            background: #ffd966;
        }
        .comment-area {
            background: #151e2b;
            border-radius: 16px;
            padding: 24px;
            border: 1px solid #263040;
            margin-top: 40px;
        }
        .comment-area h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            font-size: 0.9rem;
            color: #b0c8e8;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 10px 14px;
            border-radius: 10px;
            border: 1px solid #2f3c50;
            background: #0d131e;
            color: #e8edf5;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.25s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #ffb347;
            outline: none;
        }
        .form-group textarea {
            min-height: 90px;
            resize: vertical;
        }
        .form-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .form-row .form-group {
            flex: 1;
            min-width: 150px;
        }
        .btn-submit {
            background: #ffb347;
            border: none;
            border-radius: 40px;
            padding: 12px 32px;
            color: #0b0e14;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-submit:hover {
            background: #ffd966;
            transform: translateY(-1px);
        }
        .btn-submit:active {
            transform: scale(0.98);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 4px;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #3f4a5e;
            cursor: pointer;
            transition: color 0.2s, transform 0.1s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #ffb347;
            transform: scale(1.05);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            background: #121b28;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid #263040;
        }
        .data-table th {
            background: #1f2c40;
            color: #ffd966;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 10px 16px;
            border-bottom: 1px solid #1f2a3a;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #1a2537;
        }
        .figure-block {
            margin: 28px 0;
            background: #121b28;
            border-radius: 16px;
            padding: 12px;
            border: 1px solid #263040;
        }
        .figure-block figcaption {
            text-align: center;
            padding: 10px 0 4px;
            font-size: 0.9rem;
            color: #9ab0d0;
            font-style: italic;
        }
        blockquote {
            border-left: 4px solid #ffb347;
            background: #121b28;
            padding: 16px 22px;
            margin: 20px 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #d0ddf5;
        }
        blockquote cite {
            display: block;
            margin-top: 8px;
            font-style: normal;
            font-weight: 600;
            color: #ffd966;
        }
        .site-footer {
            background: #121821;
            border-top: 2px solid #2a3346;
            padding: 30px 0 20px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
        }
        @media(max-width:640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        .footer-grid h5 {
            color: #ffd966;
            font-size: 1rem;
            margin-bottom: 10px;
        }
        .footer-grid a {
            color: #8ea4c0;
            font-size: 0.9rem;
            display: block;
            margin-bottom: 4px;
        }
        .footer-grid a:hover {
            color: #ffb347;
        }
        friend-link {
            display: block;
            padding: 12px 0;
            border-top: 1px solid #1f2a3a;
            margin-top: 16px;
            font-size: 0.9rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 20px;
            color: #8ea4c0;
        }
        friend-link a:hover {
            color: #ffb347;
        }
        .copyright {
            text-align: center;
            padding-top: 18px;
            border-top: 1px solid #1f2a3a;
            margin-top: 16px;
            font-size: 0.85rem;
            color: #5a6e8a;
        }
        .copyright strong {
            color: #b0c8e8;
        }
        @media(max-width:680px) {
            .hamburger {
                display: inline-block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                background: #0d131e;
                padding: 10px 0;
                border-radius: 12px;
                margin-top: 6px;
                border: 1px solid #263040;
            }
            .main-nav a {
                padding: 10px 18px;
                border-radius: 0;
                border-bottom: 1px solid #1f2a3a;
            }
            .main-nav a:last-child {
                border-bottom: none;
            }
            .nav-toggle:checked~.main-nav {
                display: flex;
            }
            .header-inner {
                position: relative;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 0 14px;
            }
            .form-row {
                flex-direction: column;
                gap: 6px;
            }
            .form-row .form-group {
                min-width: auto;
            }
        }
        @media(min-width:681px) {
            .main-nav {
                display: flex !important;
            }
            .hamburger {
                display: none;
            }
        }
        .badge {
            display: inline-block;
            background: #ffb347;
            color: #0b0e14;
            padding: 2px 14px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .highlight {
            color: #ffd966;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.4rem;
            margin-right: 4px;
        }
        .last-updated {
            display: inline-block;
            background: #1a2537;
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.8rem;
            color: #9ab0d0;
            margin-bottom: 14px;
        }
        hr {
            border: none;
            border-top: 1px solid #263040;
            margin: 28px 0;
        }
        .pro-tip {
            background: linear-gradient(135deg, #1f2c40, #151e2b);
            border-left: 4px solid #ffd700;
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
        }
        .pro-tip strong {
            color: #ffd966;
        }