*,
        *::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: #0b0e14;
            color: #e8edf5;
            line-height: 1.7;
            padding: 0;
            margin: 0;
            min-height: 100vh;
        }
        a {
            color: #fbbf24;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #fcd34d;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: #ffffff;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 0.75rem;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.5rem 0 1rem 0;
            border-bottom: 2px solid #fbbf24;
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.35rem;
            margin: 1.8rem 0 0.8rem 0;
            color: #fde68a;
        }
        h4 {
            font-size: 1.1rem;
            margin: 1.2rem 0 0.5rem 0;
            color: #d1d5db;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        ul,
        ol {
            margin: 0.5rem 0 1.2rem 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        strong {
            color: #fbbf24;
            font-weight: 700;
        }
        em {
            font-style: italic;
            color: #d1d5db;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(145deg, #111827, #1e293b);
            padding: 1rem 0;
            border-bottom: 2px solid #fbbf24;
            position: sticky;
            top: 0;
            z-index: 1000;
            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;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fbbf24;
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
            transition: transform 0.2s;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            display: block;
            -webkit-text-fill-color: #94a3b8;
            color: #94a3b8;
            font-weight: 400;
            letter-spacing: 0.02em;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            padding: 0.5rem 0.9rem;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.9rem;
            color: #cbd5e1;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background: #fbbf24;
            color: #0b0e14;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid #fbbf24;
            color: #fbbf24;
            font-size: 1.5rem;
            padding: 0.4rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #fbbf24;
            color: #0b0e14;
        }
        .nav-toggle {
            display: none;
        }
        .nav-toggle:checked~.main-nav {
            display: flex;
            flex-direction: column;
            width: 100%;
            background: #1e293b;
            padding: 1rem 0;
            border-top: 1px solid #334155;
            margin-top: 0.8rem;
        }
        .nav-toggle:checked~.main-nav a {
            padding: 0.7rem 1.2rem;
            width: 100%;
            text-align: center;
        }
        .breadcrumb {
            background: #1a1f2e;
            padding: 0.6rem 1.2rem;
            border-radius: 10px;
            margin: 1rem 0;
            font-size: 0.9rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
        }
        .breadcrumb a {
            color: #94a3b8;
        }
        .breadcrumb a:hover {
            color: #fbbf24;
        }
        .breadcrumb span {
            color: #fbbf24;
        }
        .breadcrumb .sep {
            color: #475569;
            margin: 0 0.3rem;
        }
        .hero-img {
            margin: 1.5rem 0 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
        }
        .hero-img img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        .hero-caption {
            font-size: 0.9rem;
            color: #94a3b8;
            text-align: center;
            margin-top: 0.4rem;
        }
        .search-box {
            background: #1a1f2e;
            padding: 1.5rem;
            border-radius: 14px;
            margin: 2rem 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            align-items: center;
            border: 1px solid #2d3748;
        }
        .search-box label {
            font-weight: 600;
            color: #fbbf24;
            font-size: 1.1rem;
        }
        .search-box input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1rem;
            border-radius: 8px;
            border: 1px solid #334155;
            background: #0f172a;
            color: #e8edf5;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-box input[type="text"]:focus {
            border-color: #fbbf24;
        }
        .search-box button {
            padding: 0.7rem 1.6rem;
            background: #fbbf24;
            color: #0b0e14;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-box button:hover {
            background: #fcd34d;
            transform: scale(1.02);
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        @media (max-width: 700px) {
            .feedback-section {
                grid-template-columns: 1fr;
            }
        }
        .card {
            background: #1a1f2e;
            padding: 1.5rem;
            border-radius: 14px;
            border: 1px solid #2d3748;
        }
        .card h3 {
            margin-top: 0;
            color: #fbbf24;
            font-size: 1.3rem;
            border-bottom: 1px solid #2d3748;
            padding-bottom: 0.5rem;
            margin-bottom: 1rem;
        }
        .card label {
            display: block;
            margin: 0.6rem 0 0.3rem;
            font-weight: 500;
            color: #cbd5e1;
        }
        .card input,
        .card textarea,
        .card select {
            width: 100%;
            padding: 0.6rem 0.9rem;
            border-radius: 8px;
            border: 1px solid #334155;
            background: #0f172a;
            color: #e8edf5;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
        }
        .card input:focus,
        .card textarea:focus,
        .card select:focus {
            border-color: #fbbf24;
        }
        .card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .card button {
            margin-top: 0.8rem;
            padding: 0.6rem 1.6rem;
            background: #fbbf24;
            color: #0b0e14;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.2s;
        }
        .card button:hover {
            background: #fcd34d;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            cursor: pointer;
            direction: rtl;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #475569;
            transition: color 0.2s;
            font-size: 1.8rem;
            cursor: pointer;
            margin: 0;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #fbbf24;
        }
        friend-link {
            display: block;
            background: #1a1f2e;
            padding: 1.2rem 1.5rem;
            border-radius: 12px;
            margin: 1.5rem 0 0.5rem 0;
            border: 1px solid #2d3748;
        }
        friend-link a {
            display: inline-block;
            margin: 0.3rem 0.8rem 0.3rem 0;
            padding: 0.3rem 0.8rem;
            background: #2d3748;
            border-radius: 6px;
            font-size: 0.9rem;
            color: #cbd5e1;
            transition: background 0.2s, color 0.2s;
        }
        friend-link a:hover {
            background: #fbbf24;
            color: #0b0e14;
            text-decoration: none;
        }
        friend-link .fl-title {
            font-weight: 700;
            color: #fbbf24;
            margin-bottom: 0.4rem;
            display: block;
        }
        .site-footer {
            background: #111827;
            border-top: 2px solid #fbbf24;
            padding: 2rem 0 1.5rem;
            margin-top: 3rem;
            text-align: center;
        }
        .site-footer p {
            font-size: 0.9rem;
            color: #94a3b8;
            margin: 0.3rem 0;
        }
        .site-footer .copyright {
            color: #64748b;
            font-size: 0.85rem;
            margin-top: 0.8rem;
        }
        .update-badge {
            display: inline-block;
            background: #fbbf24;
            color: #0b0e14;
            padding: 0.2rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }
        .highlight-box {
            background: #1e293b;
            border-left: 4px solid #fbbf24;
            padding: 1rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        @media (max-width: 700px) {
            .two-col {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .hamburger {
                display: inline-block;
            }
            .main-nav {
                display: none;
                width: 100%;
            }
            .nav-toggle:checked~.main-nav {
                display: flex;
            }
            .header-inner {
                align-items: center;
            }
        }
        @media (min-width: 701px) {
            .nav-toggle {
                display: none;
            }
            .hamburger {
                display: none;
            }
            .main-nav {
                display: flex;
            }
        }
        .toc {
            background: #1a1f2e;
            padding: 1.2rem 1.8rem;
            border-radius: 14px;
            border: 1px solid #2d3748;
            margin: 1.5rem 0 2rem;
        }
        .toc h3 {
            margin-top: 0;
            color: #fbbf24;
        }
        .toc ol {
            columns: 2;
            column-gap: 2rem;
            list-style: decimal;
            padding-left: 1.2rem;
        }
        .toc ol li {
            margin-bottom: 0.3rem;
            break-inside: avoid;
        }
        .toc ol li a {
            color: #cbd5e1;
        }
        .toc ol li a:hover {
            color: #fbbf24;
        }
        @media (max-width: 600px) {
            .toc ol {
                columns: 1;
            }
        }
        .link-list-inline {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .link-list-inline a {
            background: #1e293b;
            padding: 0.3rem 0.9rem;
            border-radius: 20px;
            font-size: 0.85rem;
            border: 1px solid #334155;
            transition: background 0.2s, border-color 0.2s;
        }
        .link-list-inline a:hover {
            background: #fbbf24;
            color: #0b0e14;
            border-color: #fbbf24;
            text-decoration: none;
        }
        .anchor-offset {
            scroll-margin-top: 90px;
        }