*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f8f9fc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 1rem;
            max-width: 1280px;
            margin: 0 auto;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover,
        a:focus-visible {
            color: #1d4ed8;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, .06);
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.25;
            color: #0f172a;
            letter-spacing: -.01em;
        }
        h1 {
            font-size: 2.4rem;
            margin: 1.6rem 0 .6rem;
            border-left: 6px solid #f59e0b;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.4rem 0 .8rem;
            border-bottom: 3px solid #e2e8f0;
            padding-bottom: .4rem;
        }
        h3 {
            font-size: 1.35rem;
            margin: 1.8rem 0 .5rem;
            color: #1e293b;
        }
        h4 {
            font-size: 1.1rem;
            margin: 1.2rem 0 .3rem;
            color: #334155;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin: .6rem 0 1.4rem 1.6rem;
        }
        li {
            margin-bottom: .3rem;
        }
        strong {
            color: #0f172a;
            font-weight: 700;
        }
        .container {
            background: #fff;
            border-radius: 24px;
            padding: 1.8rem 2.2rem;
            margin: 1.2rem 0 2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, .04);
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 0 .6rem;
            border-bottom: 2px solid #e2e8f0;
            gap: .8rem 1.2rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f59e0b, #d97706);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -.02em;
            display: inline-flex;
            align-items: center;
            gap: .4rem;
        }
        .my-logo i {
            font-size: 1.8rem;
            -webkit-text-fill-color: #f59e0b;
            color: #f59e0b;
        }
        .my-logo:hover {
            opacity: .85;
            text-decoration: none;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: .6rem 1.4rem;
            flex-wrap: wrap;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: .2rem 1.2rem;
            flex-wrap: wrap;
            margin: 0;
        }
        .nav-list a {
            font-weight: 500;
            padding: .3rem 0;
            position: relative;
            color: #334155;
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: #f59e0b;
            transition: width .25s ease;
        }
        .nav-list a:hover::after,
        .nav-list a:focus-visible::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #1e293b;
            padding: .2rem .4rem;
            border-radius: 8px;
            transition: background .2s;
        }
        .hamburger:hover {
            background: #f1f5f9;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: .3rem .6rem;
            font-size: .9rem;
            padding: .8rem 0 .2rem;
            margin: 0;
            color: #64748b;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: .6rem;
            color: #94a3b8;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb .active {
            color: #0f172a;
            font-weight: 500;
        }
        .search-box {
            display: flex;
            gap: .5rem;
            max-width: 520px;
            margin: 1.4rem 0 2rem;
            flex-wrap: wrap;
        }
        .search-box input {
            flex: 1 1 200px;
            padding: .75rem 1.2rem;
            border: 2px solid #e2e8f0;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border .2s, box-shadow .2s;
            background: #fff;
        }
        .search-box input:focus {
            border-color: #f59e0b;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, .15);
        }
        .search-box button {
            padding: .75rem 1.8rem;
            border: none;
            border-radius: 40px;
            background: #f59e0b;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background .2s, transform .1s;
            display: inline-flex;
            align-items: center;
            gap: .5rem;
        }
        .search-box button:hover {
            background: #d97706;
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2rem 0 1rem;
        }
        .feedback-card {
            background: #f8fafc;
            border-radius: 20px;
            padding: 1.4rem 1.8rem 1.8rem;
            border: 1px solid #e2e8f0;
            transition: box-shadow .2s;
        }
        .feedback-card:hover {
            box-shadow: 0 6px 18px rgba(0, 0, 0, .04);
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: .6rem;
            font-size: 1.25rem;
        }
        .star-group {
            display: flex;
            gap: .25rem;
            font-size: 1.8rem;
            color: #f59e0b;
            cursor: pointer;
            margin: .4rem 0 .6rem;
        }
        .star-group i {
            transition: transform .15s, color .15s;
        }
        .star-group i:hover {
            transform: scale(1.25);
            color: #d97706;
        }
        .feedback-card textarea {
            width: 100%;
            padding: .75rem 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 14px;
            font-size: .95rem;
            resize: vertical;
            min-height: 80px;
            font-family: inherit;
            transition: border .2s;
            background: #fff;
        }
        .feedback-card textarea:focus {
            border-color: #f59e0b;
            outline: none;
        }
        .feedback-card .btn-submit {
            margin-top: .6rem;
            padding: .6rem 1.6rem;
            border: none;
            border-radius: 30px;
            background: #2563eb;
            color: #fff;
            font-weight: 600;
            cursor: pointer;
            transition: background .2s, transform .1s;
            display: inline-flex;
            align-items: center;
            gap: .4rem;
        }
        .feedback-card .btn-submit:hover {
            background: #1d4ed8;
            transform: scale(1.02);
        }
        .site-footer {
            padding: 2rem 0 1.2rem;
            border-top: 2px solid #e2e8f0;
            margin-top: 2.4rem;
            text-align: center;
            font-size: .95rem;
            color: #475569;
        }
        friend-link {
            display: block;
            margin: .8rem 0 1.2rem;
        }
        friend-link a {
            display: inline-block;
            margin: .2rem .6rem;
            padding: .3rem .8rem;
            background: #f1f5f9;
            border-radius: 30px;
            font-weight: 500;
            color: #1e293b;
            transition: background .2s, color .2s;
        }
        friend-link a:hover {
            background: #f59e0b;
            color: #fff;
            text-decoration: none;
        }
        .copyright {
            font-size: .85rem;
            opacity: .8;
            margin-top: .6rem;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 .6rem;
            }
            .container {
                padding: 1rem 1.2rem;
                border-radius: 16px;
            }
            h1 {
                font-size: 1.8rem;
                padding-left: .7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .site-header {
                flex-direction: row;
                padding: .8rem 0;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #fff;
                padding: 1rem 0 .6rem;
                border-radius: 16px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, .06);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li {
                padding: .3rem 1.2rem;
            }
            .hamburger {
                display: block;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .search-box input {
                flex: 1 1 100%;
            }
            .search-box button {
                flex: 1 1 100%;
                justify-content: center;
            }
            .breadcrumb {
                font-size: .8rem;
            }
        }
        @media (min-width: 769px) {
            .hamburger {
                display: none !important;
            }
            .nav-list {
                display: flex !important;
            }
        }
        .updated-badge {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: #f1f5f9;
            padding: .3rem 1rem .3rem .8rem;
            border-radius: 40px;
            font-size: .85rem;
            color: #475569;
            margin-bottom: 1.2rem;
        }
        .emoji-lg {
            font-size: 1.4rem;
            line-height: 1;
        }
        .insight-box {
            background: #fffbeb;
            border-left: 5px solid #f59e0b;
            padding: 1.2rem 1.6rem;
            border-radius: 0 16px 16px 0;
            margin: 1.6rem 0;
        }
        .feature-img-wrap {
            margin: 1.8rem 0;
            text-align: center;
        }
        .feature-img-wrap img {
            display: inline-block;
            max-width: 100%;
            border-radius: 16px;
        }
        .feature-img-wrap figcaption {
            font-size: .9rem;
            color: #64748b;
            margin-top: .4rem;
        }
        .link-list-inline {
            display: flex;
            flex-wrap: wrap;
            gap: .4rem 1.2rem;
            list-style: none;
            margin: .6rem 0 1.2rem;
        }
        .link-list-inline a {
            font-weight: 500;
        }
        hr {
            border: none;
            border-top: 2px dashed #e2e8f0;
            margin: 1.8rem 0;
        }
        .content-section p {
            margin-bottom: 1.1rem;
        }
        .content-section ul,
        .content-section ol {
            margin-bottom: 1.4rem;
        }