:root {
            --primary: #ea580c;
            --accent: #d97706;
            --bg: #fffbf5;
            --text: #1c1917;
            --line: rgba(28, 25, 23, 0.12);
            --font-display: 'Trebuchet MS', 'Segoe UI', 'Comic Sans MS', cursive, sans-serif; /* 圆体感 */
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            background-color: var(--bg);
            color: var(--text);
            font-family: var(--font-body);
            line-height: 1.6;
            position: relative;
            overflow-x: hidden;
        }
        /* 顶部细微噪点纹理 (通过伪元素) */
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            z-index: 0;
            pointer-events: none;
            opacity: 0.04;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
        }
        .container {
            position: relative;
            z-index: 2;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        /* 导航 */
        .navbar-custom {
            background: var(--bg);
            border-bottom: 1px solid var(--line);
            padding: 0.8rem 0;
            margin-bottom: 2rem;
        }
        .navbar-custom .navbar-brand {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 2rem;
            color: var(--primary);
            letter-spacing: 0.5px;
            text-decoration: none;
        }
        .navbar-custom .nav-link {
            color: var(--text);
            font-weight: 500;
            margin-left: 1.2rem;
            border-bottom: 2px solid transparent;
        }
        .navbar-custom .nav-link:hover {
            border-bottom-color: var(--primary);
            color: var(--primary);
        }
        .navbar-toggler {
            border-color: var(--line);
        }
        /* Hero */
        .hero {
            padding: 4rem 0 4rem;
            border-bottom: 1px solid var(--line);
        }
        .hero h1 {
            font-family: var(--font-display);
            font-size: clamp(3rem, 8vw, 4.5rem);
            font-weight: 900;
            line-height: 1.1;
            color: var(--text);
            letter-spacing: -0.02em;
        }
        .hero h1 span {
            color: var(--primary);
        }
        .hero .subtitle {
            font-size: 1.3rem;
            max-width: 640px;
            margin: 1.5rem 0 2rem;
            color: #444;
        }
        .btn-custom-primary {
            background-color: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
            border-radius: 40px;
            padding: 0.7rem 2rem;
            border: 1px solid var(--primary);
            transition: all 0.15s;
        }
        .btn-custom-outline {
            background: transparent;
            border: 1px solid var(--text);
            color: var(--text);
            font-weight: 600;
            border-radius: 40px;
            padding: 0.7rem 2rem;
            transition: 0.15s;
        }
        .btn-custom-outline:hover {
            background: var(--text);
            color: var(--bg);
            border-color: var(--text);
        }
        /* 通用区块 */
        section { padding: 3.5rem 0; border-bottom: 1px solid var(--line); }
        .section-title {
            font-family: var(--font-display);
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 2rem;
            position: relative;
        }
        .section-title i { color: var(--primary); margin-right: 10px; }
        /* 使用说明-手风琴 */
        .accordion-custom {
            border: 1px solid var(--line);
            border-radius: 12px;
            background: transparent;
        }
        .accordion-item-custom {
            background: transparent;
            border-bottom: 1px solid var(--line);
        }
        .accordion-item-custom:last-child { border-bottom: none; }
        .accordion-button-custom {
            background: transparent;
            color: var(--text);
            font-weight: 600;
            font-size: 1.15rem;
            padding: 1.3rem 1.5rem;
            border: none;
            text-align: left;
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .accordion-button-custom i {
            color: var(--primary);
            margin-right: 1rem;
            font-size: 1.4rem;
        }
        .accordion-button-custom::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            transition: transform 0.2s;
            color: var(--primary);
        }
        .accordion-item-custom.active .accordion-button-custom::after {
            transform: rotate(180deg);
        }
        .accordion-collapse-custom {
            padding: 0 1.5rem 1.2rem 3.2rem;
            color: #333;
        }
        /* 特色网格 Bento */
        .bento-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .bento-card {
            background: transparent;
            border: 1.5px solid var(--line);
            border-radius: 18px;
            padding: 1.8rem 1.5rem;
            transition: all 0.2s ease;
            min-height: 160px;
            box-shadow: none;
        }
        .bento-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(234, 88, 12, 0.08);
            border-color: rgba(234, 88, 12, 0.4);
        }
        .bento-card i {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .bento-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            font-family: var(--font-display);
        }
        .bento-card p { color: #3f3f3f; }
        .bento-wide { grid-column: span 2; }
        .bento-tall { grid-row: span 2; }
        /* 长文 */
        .longform {
            max-width: 800px;
            margin: 0 auto;
            color: #2a2a2a;
            font-size: 1.1rem;
        }
        .longform h3 {
            font-family: var(--font-display);
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
            color: var(--primary);
        }
        .longform p { margin-bottom: 1.2rem; }
        /* FAQ */
        .faq-item {
            border-bottom: 1px solid var(--line);
            padding: 1.2rem 0;
        }
        .faq-item h4 {
            font-size: 1.3rem;
            font-weight: 600;
        }
        .faq-item p { color: #3a3a3a; }
        /* 友情链接 */
        .friend-links {
            padding: 2.5rem 0;
            border-bottom: 1px solid var(--line);
        }
        .friend-links .links-line {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 2rem;
            font-size: 1rem;
        }
        /* 页脚 */
        .footer {
            padding: 2.5rem 0;
            color: #6b6b6b;
            font-size: 0.9rem;
        }
        /* 回到顶部按钮 */
        #backTop {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: white;
            border: none;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            z-index: 100;
            font-size: 1.3rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        #backTop.show { opacity: 1; visibility: visible; }
        /* 数字动画 */
        .num-counter { font-weight: 800; color: var(--primary); }
        @media (max-width: 768px) {
            .bento-grid { grid-template-columns: repeat(2, 1fr); }
            .bento-wide { grid-column: span 2; }
            .hero h1 { font-size: 3rem; }
        }
        @media (max-width: 480px) {
            .bento-grid { grid-template-columns: 1fr; }
            .bento-wide { grid-column: span 1; }
            .navbar-custom .nav-link { margin-left: 0; margin-top: 6px; }
        }

/* --- 子页面追加 --- */
/* 本页专属补充样式 */
        .about-hero {
            padding: 80px 0 40px;
            text-align: center;
        }
.about-hero h1 {
            font-family: var(--font-display);
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
.about-hero .lead {
            font-size: 1.1rem;
            color: var(--text);
            opacity: 0.85;
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }
.about-section {
            padding: 40px 0;
            border-bottom: 1px solid var(--line);
        }
.about-section:last-of-type {
            border-bottom: none;
        }
.about-section h2 {
            font-family: var(--font-display);
            color: var(--primary);
            font-size: 1.9rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }
.about-section h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
.about-section p {
            line-height: 1.9;
            color: var(--text);
            opacity: 0.9;
            margin-bottom: 16px;
            font-size: 1.02rem;
        }
.about-section ul {
            padding-left: 20px;
            margin-bottom: 16px;
        }
.about-section ul li {
            line-height: 1.9;
            color: var(--text);
            opacity: 0.9;
            margin-bottom: 8px;
            position: relative;
            padding-left: 8px;
        }
.about-section ul li::marker {
            color: var(--accent);
        }
.bento-grid-about {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
            margin: 28px 0 10px;
        }
.bento-card-about {
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 28px 24px;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
.bento-card-about:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(234, 88, 12, 0.08);
        }
.bento-card-about .icon-circle {
            width: 52px;
            height: 52px;
            background: rgba(234, 88, 12, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            font-size: 1.4rem;
        }
.bento-card-about h3 {
            font-family: var(--font-display);
            font-size: 1.35rem;
            color: var(--text);
            margin-bottom: 12px;
        }
.bento-card-about p {
            font-size: 0.95rem;
            line-height: 1.75;
            opacity: 0.85;
            margin-bottom: 0;
        }
.quote-block {
            background: rgba(234, 88, 12, 0.05);
            border-left: 4px solid var(--primary);
            padding: 24px 28px;
            border-radius: 0 16px 16px 0;
            margin: 28px 0;
        }
.quote-block p {
            font-style: italic;
            font-size: 1.1rem;
            line-height: 1.9;
            margin-bottom: 0;
            opacity: 0.9;
        }
.quote-block .quote-author {
            margin-top: 12px;
            font-style: normal;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.95rem;
        }
.nav-link.active {
            color: var(--primary) !important;
            font-weight: 700;
        }
.about-hero h1 { font-size: 2rem; }
.about-section h2 { font-size: 1.6rem; }

/* --- 子页面追加 --- */
/* 本页专属小样式 */
        .faq-hero {
            padding: 3rem 0 2rem;
            border-bottom: 1px solid var(--line);
            margin-bottom: 2.5rem;
        }
.faq-category-title {
            display: flex;
            align-items: center;
            gap: .75rem;
            margin: 2.5rem 0 1.25rem;
        }
.faq-category-title i {
            color: var(--primary);
            font-size: 1.25rem;
        }
.faq-item summary {
            cursor: pointer;
            font-weight: 600;
            padding: 1rem 1.25rem;
            background: rgba(234, 88, 12, 0.06);
            border: 1px solid var(--line);
            border-radius: 12px;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all .2s ease;
        }
.faq-item summary:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: rgba(234, 88, 12, 0.3);
        }
.faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: .85rem;
            color: var(--accent);
            transition: transform .2s ease;
        }
.faq-item[open] summary::after {
            transform: rotate(180deg);
        }
.faq-item .faq-answer {
            padding: 1rem 1.25rem;
            background: var(--bg);
            border: 1px solid var(--line);
            border-top: none;
            border-radius: 0 0 12px 12px;
            color: var(--text);
            line-height: 1.8;
        }
.faq-item .faq-answer a {
            color: var(--primary);
            text-decoration: underline;
        }
.faq-help-box {
            margin-top: 3rem;
            padding: 2rem;
            background: rgba(234, 88, 12, 0.05);
            border: 1px dashed var(--primary);
            border-radius: 16px;
            text-align: center;
        }
.faq-help-box h3 {
            font-family: var(--font-display);
            color: var(--primary);
            margin-bottom: .75rem;
        }
.faq-help-box p {
            max-width: 480px;
            margin: 0 auto 1.25rem;
        }
.active-faq {
            color: var(--primary) !important;
            font-weight: 600;
        }
.navbar-custom .nav-link.active-faq {
            color: var(--primary) !important;
        }

/* --- 子页面追加 --- */
/* 本页专属微调，尽量复用站点类名 */
        .privacy-hero {
            padding: 4rem 0 2rem;
            background: linear-gradient(180deg, rgba(234, 88, 12, 0.06) 0%, transparent 100%);
        }
.privacy-section {
            padding: 1.5rem 0 2.5rem;
        }
.privacy-section h2 {
            color: var(--primary);
            font-family: var(--font-display);
            font-weight: 700;
            margin-bottom: 1.25rem;
            font-size: 1.65rem;
        }
.privacy-section h3 {
            color: var(--text);
            font-weight: 600;
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
            font-size: 1.15rem;
        }
.privacy-section p, .privacy-section li {
            color: var(--text);
            line-height: 1.75;
            font-size: 0.95rem;
        }
.privacy-section ul, .privacy-section ol {
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
.privacy-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 12px;
            padding: 1.5rem;
            margin-bottom: 1rem;
            transition: box-shadow 0.2s ease;
        }
.privacy-card:hover {
            box-shadow: 0 4px 20px rgba(234, 88, 12, 0.08);
        }
.privacy-card i {
            color: var(--primary);
            margin-right: 0.5rem;
        }
.privacy-card strong {
            color: var(--text);
            font-weight: 600;
        }
.privacy-updated {
            display: inline-block;
            background: rgba(234, 88, 12, 0.08);
            color: var(--primary);
            font-size: 0.85rem;
            padding: 0.3rem 1rem;
            border-radius: 20px;
            margin-bottom: 1.5rem;
            font-weight: 500;
        }
.last-updated {
            font-size: 0.85rem;
            color: rgba(28, 25, 23, 0.6);
            margin-bottom: 2rem;
        }
/* 当前导航高亮 */
        .navbar-nav .nav-link.active {
            color: var(--primary) !important;
            font-weight: 600;
        }