* {
            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, 'Helvetica Neue', sans-serif;
            background: #fafaf8;
            color: #1e2a2f;
            line-height: 1.7;
            padding: 0 16px;
        }
        a {
            color: #1a6b8a;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0d3e52;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.4rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.25;
            color: #0f2a35;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        h1 {
            font-size: 2.2rem;
            letter-spacing: -0.02em;
            border-left: 6px solid #f4a261;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.7rem;
            border-bottom: 2px solid #e9d8a6;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.3rem;
            color: #1d4a5e;
        }
        h4 {
            font-size: 1.1rem;
            color: #2a5f6e;
        }
        p {
            margin-bottom: 1.2rem;
        }
        strong,
        b {
            color: #0a1c24;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.04);
            border-radius: 24px 24px 0 0;
            padding: 24px 28px 40px;
        }
        .badge {
            display: inline-block;
            background: #f4a261;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.9rem;
            border-radius: 30px;
            letter-spacing: 0.3px;
        }
        .last-updated {
            font-size: 0.85rem;
            color: #6c7a80;
            margin-top: -0.5rem;
            margin-bottom: 2rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .last-updated i {
            font-size: 0.9rem;
        }
        .emoji {
            font-style: normal;
        }
        header {
            background: #ffffff;
            border-radius: 20px 20px 0 0;
            padding: 20px 28px 10px;
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid #eef2f0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 700;
            background: linear-gradient(135deg, #0f2a35, #1a6b8a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: #f4a261;
            font-size: 1.6rem;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #6c7a80;
            font-weight: 400;
            display: block;
            margin-top: -4px;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        nav#main-nav {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
        }
        nav#main-nav a {
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 10px;
            border-radius: 30px;
            color: #1e2a2f;
            transition: background 0.2s, color 0.2s;
        }
        nav#main-nav a:hover {
            background: #eef7fa;
            color: #0f2a35;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: #0f2a35;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #eef2f0;
        }
        .breadcrumb {
            width: 100%;
            margin-top: 12px;
            padding-top: 10px;
            border-top: 1px solid #f0f3f1;
            font-size: 0.85rem;
            color: #6c7a80;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb a {
            color: #1a6b8a;
        }
        .breadcrumb span.sep {
            color: #bcc8cd;
        }
        .search-section {
            background: #f4f8f9;
            border-radius: 60px;
            padding: 6px 6px 6px 20px;
            display: flex;
            align-items: center;
            max-width: 520px;
            margin: 24px 0 20px;
            border: 1px solid #dce5e8;
            transition: box-shadow 0.2s;
        }
        .search-section:focus-within {
            box-shadow: 0 0 0 3px rgba(26, 107, 138, 0.15);
            border-color: #1a6b8a;
        }
        .search-section i {
            color: #8a9ea8;
            font-size: 1rem;
        }
        .search-section input {
            border: none;
            background: transparent;
            padding: 10px 12px;
            flex: 1;
            font-size: 0.95rem;
            outline: none;
            font-family: inherit;
        }
        .search-section button {
            background: #1a6b8a;
            border: none;
            color: #fff;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 40px;
            cursor: pointer;
            font-size: 0.9rem;
            transition: background 0.2s, transform 0.1s;
            font-family: inherit;
        }
        .search-section button:hover {
            background: #0d4e68;
            transform: scale(0.97);
        }
        .hero-figure {
            margin: 24px 0 32px;
            border-radius: 18px;
            overflow: hidden;
            background: #dce5e8;
            position: relative;
        }
        .hero-figure img {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
        }
        .hero-figure figcaption {
            padding: 12px 20px;
            background: rgba(15, 42, 53, 0.85);
            color: #f0f7fa;
            font-size: 0.9rem;
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
        }
        .toc-card {
            background: #f4f8f9;
            border-radius: 16px;
            padding: 20px 26px;
            margin: 24px 0 32px;
            border-left: 4px solid #f4a261;
        }
        .toc-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .toc-card ol {
            margin: 10px 0 0;
            columns: 2 240px;
            column-gap: 36px;
        }
        .toc-card li {
            break-inside: avoid;
            margin-bottom: 4px;
        }
        .toc-card a {
            font-weight: 500;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0 28px;
            border-radius: 14px;
            border: 1px solid #e2e8ea;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            min-width: 540px;
        }
        th {
            background: #0f2a35;
            color: #f5fafc;
            padding: 14px 16px;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 12px 16px;
            border-bottom: 1px solid #eef2f0;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f7fbfc;
        }
        .interact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 32px 0 28px;
        }
        .interact-card {
            background: #f9fbfb;
            border-radius: 16px;
            padding: 22px 24px;
            border: 1px solid #e6edef;
            transition: box-shadow 0.2s;
        }
        .interact-card:hover {
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.04);
        }
        .interact-card h4 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .interact-card textarea,
        .interact-card input {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid #d0dadf;
            border-radius: 10px;
            font-family: inherit;
            font-size: 0.9rem;
            resize: vertical;
            background: #fff;
            transition: border-color 0.2s;
        }
        .interact-card textarea:focus,
        .interact-card input:focus {
            border-color: #1a6b8a;
            outline: none;
            box-shadow: 0 0 0 3px rgba(26, 107, 138, 0.08);
        }
        .interact-card button {
            background: #1a6b8a;
            color: #fff;
            border: none;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            font-size: 0.9rem;
            margin-top: 10px;
            transition: background 0.2s, transform 0.1s;
            font-family: inherit;
        }
        .interact-card button:hover {
            background: #0d4e68;
            transform: scale(0.97);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            margin: 8px 0 12px;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #d0dadf;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f4a261;
        }
        .link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 10px 18px;
            margin: 18px 0 22px;
            padding: 18px 20px;
            background: #fafcfd;
            border-radius: 14px;
            border: 1px solid #e6edef;
        }
        .link-grid a {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.92rem;
            padding: 4px 0;
        }
        .link-grid a i {
            color: #f4a261;
            font-size: 0.75rem;
        }
        friend-link {
            display: block;
            margin-top: 30px;
            padding-top: 24px;
            border-top: 2px solid #e6edef;
        }
        friend-link h4 {
            margin-top: 0;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        friend-link .friend-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            margin: 10px 0 6px;
        }
        friend-link .friend-list a {
            font-size: 0.92rem;
            padding: 4px 0;
        }
        footer {
            max-width: 1200px;
            margin: 0 auto 24px;
            padding: 20px 28px 28px;
            background: #0f2a35;
            border-radius: 0 0 24px 24px;
            color: #dce8ed;
            font-size: 0.88rem;
        }
        footer .copyright {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            margin-top: 8px;
        }
        footer a {
            color: #f4a261;
        }
        footer a:hover {
            color: #f7c38a;
        }
        @media (max-width: 820px) {
            .container {
                padding: 16px 16px 32px;
            }
            header {
                padding: 16px 16px 8px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .nav-wrapper nav#main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #f9fbfb;
                padding: 16px 12px;
                border-radius: 16px;
                margin-top: 12px;
                gap: 6px;
                border: 1px solid #e6edef;
            }
            .nav-wrapper nav#main-nav.open {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .interact-grid {
                grid-template-columns: 1fr;
            }
            .toc-card ol {
                columns: 1;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .search-section {
                flex-wrap: wrap;
                border-radius: 30px;
                padding: 6px 6px 6px 16px;
            }
            .search-section button {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .hero-figure figcaption {
                position: relative;
                background: #0f2a35;
            }
            footer .copyright {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 480px) {
            body {
                padding: 0 8px;
            }
            .container {
                padding: 12px 12px 24px;
                border-radius: 16px 16px 0 0;
            }
            header {
                padding: 12px 12px 6px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .link-grid {
                grid-template-columns: 1fr;
            }
            table {
                font-size: 0.82rem;
                min-width: 360px;
            }
            th,
            td {
                padding: 8px 10px;
            }
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .text-muted {
            color: #6c7a80;
            font-size: 0.9rem;
        }
        .divider {
            height: 1px;
            background: #e6edef;
            margin: 32px 0;
        }
        .highlight-box {
            background: #fcf8ed;
            border-left: 4px solid #f4a261;
            padding: 16px 22px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }