/* ===== 主题设计变量 · 暖橙赭石 ===== */
        :root {
            --nc-primary: #ea580c;
            --nc-accent: #d97706;
            --nc-bg: #fffbf5;
            --nc-text: #1c1917;
            --nc-border: #f0e4d8;
            --nc-shadow: 0 12px 28px -8px rgba(234, 88, 12, 0.12);
            --nc-radius: 8px;
        }

        body {
            background-color: var(--nc-bg);
            color: var(--nc-text);
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.75;
            letter-spacing: 0.01em;
        }

        h1, h2, h3, h4, .font-hand {
            font-family: 'Inter', 'Comic Neue', 'Segoe UI', cursive;
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        /* 锚点导航吸顶 */
        .sticky-nav {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 251, 245, 0.92);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--nc-border);
            box-shadow: 0 6px 18px rgba(0,0,0,0.02);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.6rem;
            color: var(--nc-primary) !important;
            letter-spacing: -0.5px;
        }
        .navbar-brand i {
            color: var(--nc-accent);
            margin-right: 6px;
        }

        .nav-link {
            font-weight: 500;
            color: var(--nc-text) !important;
            padding: .5rem 1rem !important;
            transition: color 0.2s;
        }
        .nav-link:hover {
            color: var(--nc-primary) !important;
        }

        /* 主视觉 Hero 压暗叠白 */
        .hero-section {
            position: relative;
            background-image: url('{随机图片}'); /* 大图占位，后续替换 */
            background-size: cover;
            background-position: center 30%;
            min-height: 78vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            isolation: isolate;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: -1;
        }
        .hero-content {
            max-width: 800px;
            padding: 2rem 1.5rem;
            color: #fff;
        }
        .hero-content h1 {
            font-size: 3.6rem;
            font-weight: 800;
            text-shadow: 0 4px 14px rgba(0,0,0,0.25);
            line-height: 1.2;
        }
        .hero-content .tagline {
            font-size: 1.4rem;
            font-weight: 400;
            color: #f8e6d8;
            margin-top: 1rem;
        }

        /* 几何色块背景装饰 */
        .deco-bg {
            position: relative;
        }
        .deco-bg::before, .deco-bg::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 80px;
            border-radius: 16px;
            opacity: 0.2;
            z-index: 0;
            pointer-events: none;
        }
        .deco-bg::before {
            background: var(--nc-accent);
            top: 90px;
            left: 4%;
            transform: rotate(25deg);
            border-radius: 4px;
            width: 60px;
            height: 60px;
        }
        .deco-bg::after {
            background: var(--nc-primary);
            bottom: 120px;
            right: 6%;
            border-radius: 50%;
            width: 90px;
            height: 90px;
            opacity: 0.15;
        }
        .deco-square {
            position: absolute;
            width: 30px;
            height: 30px;
            background: var(--nc-accent);
            opacity: 0.25;
            border-radius: 4px;
            transform: rotate(45deg);
            top: 40%;
            left: 7%;
            z-index: 0;
        }
        .deco-triangle {
            position: absolute;
            width: 0;
            height: 0;
            border-left: 12px solid transparent;
            border-right: 12px solid transparent;
            border-bottom: 22px solid var(--nc-primary);
            opacity: 0.2;
            bottom: 10%;
            right: 12%;
            transform: rotate(20deg);
            z-index: 0;
        }

        /* 通用卡片/区块 */
        .card-item {
            border-radius: var(--nc-radius);
            border: 1px solid var(--nc-border);
            background: #fffdfa;
            box-shadow: var(--nc-shadow);
            transition: transform 0.2s ease, box-shadow 0.2s;
            height: 100%;
        }
        .card-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 18px 36px -8px rgba(234, 88, 12, 0.18);
        }

        .img-zoom {
            overflow: hidden;
            border-radius: var(--nc-radius);
        }
        .img-zoom img {
            transition: transform 0.4s ease;
            width: 100%;
            display: block;
        }
        .img-zoom:hover img {
            transform: scale(1.04);
        }

        .hover-layer {
            position: relative;
        }
        .hover-layer .layer-mask {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(28,25,23,0.5), transparent 60%);
            opacity: 0;
            transition: opacity 0.3s;
            border-radius: var(--nc-radius);
            pointer-events: none;
        }
        .hover-layer:hover .layer-mask {
            opacity: 1;
        }

        /* 对比表格 */
        .table-compare {
            border-collapse: separate;
            border-spacing: 0 6px;
            width: 100%;
        }
        .table-compare th, .table-compare td {
            padding: 1rem 0.8rem;
            background: #fffdfa;
            border-bottom: 1px solid var(--nc-border);
        }
        .table-compare thead th {
            background: var(--nc-primary);
            color: white;
            font-weight: 600;
            border: none;
        }
        .table-compare tbody tr:hover td {
            background: #fff5e9;
        }

        /* 编号清单 */
        .num-list {
            list-style: none;
            padding-left: 0;
            counter-reset: step-counter;
        }
        .num-list li {
            counter-increment: step-counter;
            margin-bottom: 1rem;
            display: flex;
            gap: 1rem;
            align-items: baseline;
        }
        .num-list li::before {
            content: counter(step-counter);
            background: var(--nc-primary);
            color: white;
            font-weight: bold;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        /* 滚动渐显动画 */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s cubic-bezier(0.2,0.7,0.2,1), transform 0.7s;
        }
        .fade-up.show {
            opacity: 1;
            transform: translateY(0);
        }

        /* 回到顶部按钮 */
        #backToTop {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--nc-primary);
            color: #fff;
            border: none;
            box-shadow: 0 8px 20px rgba(234,88,12,0.3);
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: 0.3s;
            z-index: 1090;
        }
        #backToTop.show {
            opacity: 1;
            visibility: visible;
        }
        #backToTop:hover {
            background: var(--nc-accent);
            transform: scale(1.05);
        }

        /* 页脚与友链 */
        .footer {
            background: #2a241f;
            color: #e7dfd7;
            padding: 2rem 0;
        }
        .footer a {
            color: #f0c8b0;
            text-decoration: none;
        }
        .footer a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .friend-links {
            background: #fffbf5;
            border-top: 1px solid var(--nc-border);
            border-bottom: 1px solid var(--nc-border);
            padding: 1.2rem 0;
            font-size: 0.95rem;
        }
        .friend-links a {
            color: var(--nc-primary);
            margin-right: 1rem;
            text-decoration: none;
            font-weight: 500;
        }

        /* 辅助 */
        .section-pad {
            padding: 5rem 0;
        }
        .bg-soft {
            background: #fdf7f0;
        }
        .text-primary-nc { color: var(--nc-primary) !important; }
        .btn-nc {
            background: var(--nc-primary);
            color: #fff;
            border-radius: var(--nc-radius);
            padding: 0.6rem 1.8rem;
            font-weight: 600;
            border: none;
            transition: 0.2s;
        }
        .btn-nc:hover {
            background: var(--nc-accent);
            color: white;
        }

/* --- 子页面追加 --- */
/* 覆盖 Bootstrap 卡片/列表默认白底黑字，避免白块 */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer,
        .list-group-item, .accordion-item, .accordion-button, .accordion-body {
            background: var(--nc-bg);
            color: var(--nc-text);
            border-color: var(--nc-border);
        }
.accordion-button:not(.collapsed) {
            background: rgba(234, 88, 12, 0.08);
            color: var(--nc-primary);
        }
.accordion-button:focus {
            box-shadow: 0 0 0 0.2rem rgba(234, 88, 12, 0.1);
        }
/* 细节微调 */
        .about-hero-title {
            color: var(--nc-text);
        }
.table-compare th {
            color: var(--nc-primary);
            font-weight: 600;
        }
.friend-links a:hover {
            color: var(--nc-primary);
        }

/* --- 子页面追加 --- */
/* 确保 Bootstrap 组件不破坏站点配色 —— 覆盖可能出现的白底黑字 */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer,
        .list-group-item, .accordion-item, .accordion-button, .accordion-body,
        .form-control, .form-select, .modal-content, .modal-header, .modal-body,
        .dropdown-menu, .dropdown-item, .table {
            background: var(--nc-bg) !important;
            color: var(--nc-text) !important;
            border-color: var(--nc-border) !important;
        }
.list-group-item {
            background: transparent !important;
            border-color: var(--nc-border) !important;
        }
.form-control::placeholder {
            color: rgba(28, 25, 23, 0.5) !important;
        }
/* 小标题点缀 */
        .disclaimer-title {
            color: var(--nc-primary);
            font-weight: 700;
            border-left: 4px solid var(--nc-accent);
            padding-left: 0.8rem;
            margin: 2.5rem 0 1.2rem;
        }
.disclaimer-sub {
            font-weight: 600;
            color: var(--nc-text);
            margin-top: 1.8rem;
        }
.text-muted-soft {
            color: rgba(28, 25, 23, 0.7);
        }
.highlight-nc {
            background: linear-gradient(120deg, rgba(234,88,12,0.12), rgba(217,119,6,0.08));
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
            font-weight: 500;
        }
/* 页内锚点偏移 */
        .scroll-offset {
            scroll-margin-top: 80px;
        }

/* --- 子页面追加 --- */
/* 覆盖bootstrap组件配色，确保与嫩草tv风格一致 */
        .form-control, .form-select {
            background-color: rgba(255, 251, 245, 0.9) !important;
            color: var(--nc-text) !important;
            border-color: var(--nc-border) !important;
            border-radius: var(--nc-radius) !important;
        }
.form-control:focus {
            border-color: var(--nc-primary) !important;
            box-shadow: 0 0 0 0.2rem rgba(234, 88, 12, 0.1) !important;
        }
.accordion-button {
            background-color: var(--nc-bg) !important;
            color: var(--nc-text) !important;
            border-color: var(--nc-border) !important;
        }
.card, .card-body {
            background-color: var(--nc-bg) !important;
            color: var(--nc-text) !important;
            border-color: var(--nc-border) !important;
        }
.btn-outline-primary-nc {
            border-color: var(--nc-primary) !important;
            color: var(--nc-primary) !important;
        }
.btn-outline-primary-nc:hover {
            background-color: var(--nc-primary) !important;
            color: #fff !important;
        }
.navbar-nav {
                background-color: var(--nc-bg);
                border-radius: var(--nc-radius);
                padding: 10px 0;
                margin-top: 10px;
                box-shadow: var(--nc-shadow);
            }
.navbar-nav .nav-link {
                padding: 8px 16px;
            }
/* 让图标更和谐 */
        .icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background-color: rgba(234, 88, 12, 0.1);
            color: var(--nc-primary);
            margin-right: 12px;
        }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.form-label { color:#1c1917 !important; }
.accordion-header { background:transparent !important; }