*,
        *::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: #fafaf8;
            color: #1a1a1a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #2b6a3e;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #1d4d2c;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #1a1a1a;
            margin-top: 0;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.8rem;
            margin-top: 2.8rem;
            margin-bottom: 0.8rem;
            border-bottom: 3px solid #d4e9d6;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.35rem;
            margin-top: 2rem;
            margin-bottom: 0.6rem;
            color: #2b6a3e;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.4rem;
            margin-bottom: 0.4rem;
            color: #3d3d3d;
        }
        p {
            margin-bottom: 1.2rem;
        }
        strong {
            color: #1d4d2c;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .site-header {
            background: linear-gradient(135deg, #1a3a2a 0%, #2b6a3e 100%);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
        }
        .my-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.7rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.03em;
            text-decoration: none;
            transition: opacity 0.2s;
        }
        .my-logo:hover {
            opacity: 0.88;
            text-decoration: none;
            color: #fff;
        }
        .my-logo i {
            font-size: 1.9rem;
            color: #f7d44a;
        }
        .my-logo span {
            background: #f7d44a;
            color: #1a3a2a;
            padding: 0.05rem 0.5rem;
            border-radius: 6px;
            font-size: 0.9rem;
            margin-left: 0.3rem;
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .nav-main a {
            color: #e8f0e8;
            padding: 0.4rem 0.8rem;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-main a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #f7d44a;
            text-decoration: none;
        }
        .nav-main a.active {
            background: rgba(255, 255, 255, 0.12);
            color: #f7d44a;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #f0f3ee;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            color: #555;
            border-bottom: 1px solid #dce3da;
        }
        .breadcrumb a {
            color: #2b6a3e;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 0.3rem;
            color: #999;
        }
        .content-wrap {
            padding: 2rem 0 3rem;
        }
        .content-wrap .container {
            background: #fff;
            border-radius: 20px;
            padding: 2.5rem 2.5rem 3.5rem;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.04);
        }
        .feature-img {
            margin: 1.8rem 0 2.2rem;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
        }
        .feature-img img {
            width: 100%;
            height: auto;
            aspect-ratio: 1200/630;
            object-fit: cover;
            background: #d4e9d6;
        }
        .feature-img figcaption {
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #666;
            background: #f7f9f6;
            border-top: 1px solid #e6ede4;
            font-style: italic;
        }
        .search-section {
            background: #f4f7f3;
            border-radius: 14px;
            padding: 1.6rem 2rem;
            margin: 2rem 0 1.8rem;
            border: 1px solid #dce8da;
        }
        .search-section h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            margin-top: 0.6rem;
        }
        .search-form input[type="text"] {
            flex: 1 1 260px;
            padding: 0.7rem 1.2rem;
            border: 2px solid #c2d6be;
            border-radius: 8px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
            background: #fff;
        }
        .search-form input[type="text"]:focus {
            border-color: #2b6a3e;
        }
        .search-form button {
            background: #2b6a3e;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #1d4d2c;
            transform: translateY(-1px);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2.2rem 0 1.5rem;
        }
        .interaction-card {
            background: #f9fbf8;
            border: 1px solid #e2ebe0;
            border-radius: 14px;
            padding: 1.5rem 1.8rem 1.8rem;
        }
        .interaction-card h3 {
            margin-top: 0;
            font-size: 1.15rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            border-bottom: 2px solid #d4e9d6;
            padding-bottom: 0.4rem;
        }
        .interaction-card textarea {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #c2d6be;
            border-radius: 8px;
            font-family: inherit;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 80px;
            outline: none;
            transition: border 0.3s;
            background: #fff;
        }
        .interaction-card textarea:focus {
            border-color: #2b6a3e;
        }
        .interaction-card input[type="text"],
        .interaction-card input[type="number"] {
            width: 100%;
            padding: 0.6rem 1rem;
            border: 2px solid #c2d6be;
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.3s;
            background: #fff;
        }
        .interaction-card input:focus {
            border-color: #2b6a3e;
        }
        .interaction-card .field-group {
            margin-bottom: 0.8rem;
        }
        .interaction-card .field-group label {
            display: block;
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 0.2rem;
            color: #3d3d3d;
        }
        .interaction-card .submit-btn {
            background: #2b6a3e;
            color: #fff;
            border: none;
            padding: 0.6rem 1.6rem;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            margin-top: 0.4rem;
        }
        .interaction-card .submit-btn:hover {
            background: #1d4d2c;
            transform: translateY(-1px);
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #e0d5b0;
            cursor: pointer;
            margin: 0.4rem 0 0.6rem;
        }
        .rating-stars i {
            transition: color 0.2s, transform 0.1s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #f7c948;
            transform: scale(1.1);
        }
        .link-list-inline {
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 1rem;
            list-style: none;
            padding: 0.8rem 0 0.2rem;
            margin: 0.6rem 0 1rem;
        }
        .link-list-inline li::before {
            content: "▸ ";
            color: #2b6a3e;
            font-weight: 700;
        }
        .link-list-inline a {
            font-weight: 500;
        }
        .site-footer {
            background: #1a2e22;
            color: #d4e3d4;
            padding: 2.5rem 0 1.2rem;
            margin-top: 2rem;
        }
        .site-footer a {
            color: #b5d6b5;
        }
        .site-footer a:hover {
            color: #f7d44a;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 1.8rem;
        }
        .footer-grid h4 {
            color: #e8f0e8;
            font-size: 1rem;
            margin-bottom: 0.6rem;
            border-bottom: 1px solid #3a5a4a;
            padding-bottom: 0.3rem;
        }
        .footer-grid ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-grid ul li {
            margin-bottom: 0.3rem;
        }
        .footer-grid ul li a {
            font-size: 0.9rem;
        }
        friend-link {
            display: block;
            padding: 1rem 0;
            border-top: 1px solid #3a5a4a;
            margin-top: 0.8rem;
            font-size: 0.9rem;
        }
        friend-link a {
            margin: 0 0.8rem 0 0;
            display: inline-block;
        }
        .copyright {
            text-align: center;
            padding-top: 1rem;
            border-top: 1px solid #3a5a4a;
            font-size: 0.82rem;
            color: #9ab89a;
        }
        @media (max-width: 900px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-main {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 0.8rem 0 0.2rem;
                gap: 0.2rem;
            }
            .nav-main a {
                padding: 0.5rem 1rem;
                border-radius: 4px;
            }
            .nav-toggle:checked+.hamburger+.nav-main {
                display: flex;
            }
            .nav-toggle:checked+.hamburger .fa-bars::before {
                content: "\f00d";
            }
            .nav-toggle {
                display: none !important;
            }
            .hamburger-label {
                display: block;
                cursor: pointer;
                font-size: 1.6rem;
                padding: 0.2rem 0.5rem;
                border-radius: 4px;
                color: #fff;
                transition: background 0.2s;
                user-select: none;
            }
            .hamburger-label:hover {
                background: rgba(255, 255, 255, 0.1);
            }
            .hamburger-checkbox {
                display: none !important;
            }
            .hamburger-checkbox:checked~.nav-main {
                display: flex !important;
            }
            .hamburger-checkbox:checked~.hamburger-label .fa-bars::before {
                content: "\f00d";
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-main {
                order: 3;
                flex-basis: 100%;
            }
            .content-wrap .container {
                padding: 1.8rem 1.2rem 2.5rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .search-section {
                padding: 1.2rem 1.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .content-wrap .container {
                padding: 1.2rem 0.8rem 2rem;
                border-radius: 12px;
            }
            h1 {
                font-size: 1.6rem;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .my-logo span {
                font-size: 0.7rem;
            }
            .interaction-card {
                padding: 1rem 1rem 1.4rem;
            }
            .search-form input[type="text"],
            .search-form button {
                flex: 1 1 100%;
            }
        }
        .text-muted {
            color: #777;
            font-size: 0.9rem;
        }
        .mt-1 {
            margin-top: 0.6rem;
        }
        .mb-1 {
            margin-bottom: 0.6rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .last-updated {
            background: #f0f5ee;
            padding: 0.4rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
            color: #4f6b55;
            display: inline-block;
        }
        .emoji-big {
            font-size: 1.8rem;
            vertical-align: middle;
        }
        .highlight-box {
            background: #f4faf4;
            border-left: 4px solid #2b6a3e;
            padding: 1rem 1.5rem;
            border-radius: 0 10px 10px 0;
            margin: 1.2rem 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .toc {
            background: #f7f9f6;
            border-radius: 12px;
            padding: 1.2rem 1.8rem;
            margin: 1.5rem 0 2rem;
            border: 1px solid #dce8da;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ol {
            margin-bottom: 0;
        }
        .toc ol li {
            margin-bottom: 0.3rem;
        }
        .toc a {
            color: #2b6a3e;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 1rem;
            margin: 1.2rem 0;
        }
        .stat-card {
            background: #f4f8f3;
            padding: 1rem;
            border-radius: 10px;
            text-align: center;
            border: 1px solid #dce8da;
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #2b6a3e;
            line-height: 1.2;
        }
        .stat-card .label {
            font-size: 0.8rem;
            color: #4f6b55;
            text-transform: uppercase;
            letter-spacing: 0.03em;
        }
        .hamburger-checkbox {
            display: none !important;
        }
        .hamburger-label {
            display: none;
            cursor: pointer;
            font-size: 1.6rem;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            color: #fff;
            transition: background 0.2s;
            user-select: none;
        }
        .hamburger-label:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 768px) {
            .hamburger-label {
                display: block;
            }
            .nav-main {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 0.8rem 0 0.2rem;
                gap: 0.2rem;
                order: 3;
                flex-basis: 100%;
            }
            .hamburger-checkbox:checked~.nav-main {
                display: flex !important;
            }
            .hamburger-checkbox:checked~.hamburger-label .fa-bars::before {
                content: "\f00d";
            }
            .header-inner {
                flex-wrap: wrap;
            }
        }