*,
        *::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: #f9f7f2;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0 1rem 2rem;
        }
        a {
            color: #c84b1e;
            text-decoration: none;
            transition: color 0.25s;
        }
        a:hover,
        a:focus {
            color: #9a3612;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            border-radius: 28px 28px 20px 20px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
            padding: 0 1.8rem 2.5rem;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #1e3a5f;
            margin: 0.5rem 0 0.3rem;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #1e3a5f;
            margin: 2.4rem 0 0.8rem;
            border-bottom: 4px solid #f4a261;
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        h3 {
            font-size: 1.45rem;
            font-weight: 600;
            color: #264653;
            margin: 1.8rem 0 0.6rem;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2a9d8f;
            margin: 1.2rem 0 0.4rem;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .lead {
            font-size: 1.25rem;
            font-weight: 400;
            color: #2c3e50;
            background: #f1f9f6;
            padding: 1.2rem 1.8rem;
            border-radius: 16px;
            border-left: 6px solid #2a9d8f;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 0 0.6rem;
            border-bottom: 2px solid #e9e0d4;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: #c84b1e;
            letter-spacing: -0.04em;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            background: linear-gradient(135deg, #c84b1e 0%, #e76f51 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo i {
            font-size: 2rem;
            -webkit-text-fill-color: #c84b1e;
            color: #c84b1e;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        nav {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        nav a {
            padding: 0.5rem 1rem;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.95rem;
            color: #2c3e50;
            transition: background 0.2s, color 0.2s;
        }
        nav a:hover,
        nav a.active {
            background: #f4a261;
            color: #1e2a3a;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1e3a5f;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #f1e6db;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.8rem;
            padding: 0.8rem 0 0.3rem;
            font-size: 0.9rem;
            color: #6b7a8a;
            list-style: none;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #c84b1e;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #c84b1e;
        }
        .search-section {
            background: #f1f4f8;
            border-radius: 20px;
            padding: 1.6rem 2rem;
            margin: 1.8rem 0 2rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
        }
        .search-section label {
            font-weight: 600;
            color: #1e3a5f;
            font-size: 1.1rem;
        }
        .search-form {
            display: flex;
            flex: 1 1 300px;
            gap: 0.5rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.7rem 1.2rem;
            border: 2px solid #d5cdc0;
            border-radius: 40px;
            font-size: 1rem;
            background: #fff;
            transition: border 0.2s;
        }
        .search-form input:focus {
            outline: none;
            border-color: #c84b1e;
        }
        .search-form button {
            background: #c84b1e;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.7rem 1.6rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-form button:hover {
            background: #9a3612;
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2.4rem 0 1.5rem;
        }
        .comment-card,
        .rating-card {
            background: #faf8f5;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            border: 1px solid #e9e0d4;
        }
        .comment-card h3,
        .rating-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .comment-card textarea {
            width: 100%;
            border: 2px solid #d5cdc0;
            border-radius: 14px;
            padding: 0.8rem 1rem;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
            transition: border 0.2s;
        }
        .comment-card textarea:focus {
            outline: none;
            border-color: #c84b1e;
        }
        .comment-card button,
        .rating-card button {
            background: #2a9d8f;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.6rem 2rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            margin-top: 0.8rem;
            transition: background 0.2s;
        }
        .comment-card button:hover,
        .rating-card button:hover {
            background: #1f7a6f;
        }
        .star-group {
            display: flex;
            gap: 0.4rem;
            font-size: 2rem;
            color: #e0d6c8;
            cursor: pointer;
            margin: 0.6rem 0 0.4rem;
        }
        .star-group .fa-star.active {
            color: #f4a261;
        }
        .star-group .fa-star:hover {
            color: #f4a261;
            transform: scale(1.1);
        }
        .link-group {
            background: #f1f9f6;
            border-radius: 18px;
            padding: 1.4rem 2rem;
            margin: 1.8rem 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.6rem;
        }
        .link-group a {
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .link-group a::before {
            content: "🔤";
            font-size: 0.9rem;
        }
        .feature-img {
            margin: 2rem 0 1.2rem;
            border-radius: 18px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        }
        .feature-img figcaption {
            font-size: 0.9rem;
            color: #5a6a7a;
            text-align: center;
            margin-top: 0.5rem;
            font-style: italic;
        }
        footer {
            border-top: 2px solid #e9e0d4;
            padding: 2rem 0 1rem;
            margin-top: 2.8rem;
        }
        .footer-flex {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.4rem;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.6rem;
            font-weight: 500;
            padding: 1rem 1.4rem;
            background: #f4f1ec;
            border-radius: 16px;
        }
        friend-link a {
            color: #1e3a5f;
        }
        friend-link a:hover {
            color: #c84b1e;
        }
        .copyright {
            text-align: center;
            color: #5a6a7a;
            font-size: 0.9rem;
            margin-top: 1.4rem;
            padding-top: 1rem;
            border-top: 1px solid #e9e0d4;
        }
        @media (max-width: 820px) {
            .container {
                padding: 0 1rem 1.8rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .my-logo {
                font-size: 1.7rem;
            }
            nav a {
                font-size: 0.85rem;
                padding: 0.4rem 0.8rem;
            }
        }
        @media (max-width: 640px) {
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #fff;
                padding: 0.8rem 0;
                border-radius: 16px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                margin-top: 0.6rem;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 0.7rem 1.4rem;
                border-radius: 0;
                border-bottom: 1px solid #f1e6db;
            }
            nav a:last-child {
                border-bottom: none;
            }
            header {
                flex-wrap: wrap;
            }
            .nav-wrapper {
                width: auto;
            }
            .search-section {
                flex-direction: column;
                padding: 1.2rem;
            }
            .search-form {
                width: 100%;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .link-group {
                flex-direction: column;
                gap: 0.5rem;
            }
            .star-group {
                font-size: 1.6rem;
            }
            footer .footer-flex {
                flex-direction: column;
            }
        }
        @media (min-width: 641px) {
            nav {
                display: flex !important;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #c84b1e;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
            z-index: 99;
            transition: background 0.2s, transform 0.2s;
            border: none;
            cursor: pointer;
        }
        .scroll-top:hover {
            background: #9a3612;
            transform: translateY(-4px);
        }
        .highlight-box {
            background: linear-gradient(145deg, #fff6ed, #fef0e6);
            border-radius: 18px;
            padding: 1.6rem 2rem;
            border-left: 6px solid #e76f51;
            margin: 1.6rem 0;
        }
        .highlight-box strong {
            color: #c84b1e;
        }
        .insight-badge {
            display: inline-block;
            background: #2a9d8f;
            color: #fff;
            padding: 0.2rem 1rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .emoji-lg {
            font-size: 1.8rem;
            vertical-align: middle;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.6rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #faf8f5;
            border-radius: 14px;
            overflow: hidden;
        }
        th,
        td {
            padding: 0.7rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid #e9e0d4;
        }
        th {
            background: #1e3a5f;
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f1f4f8;
        }
        .last-updated {
            display: block;
            text-align: right;
            font-size: 0.85rem;
            color: #6b7a8a;
            margin-top: 0.2rem;
            padding: 0.4rem 0;
        }
        .last-updated i {
            margin-right: 0.3rem;
        }