/* roulang page: index */
:root {
            --primary: #4f46e5;
            --primary-dark: #4338ca;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --text: #0f172a;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 1rem;
            --shadow: 0 4px 24px rgba(15, 23, 42, .06);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            margin: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .nav-item {
            display: inline-flex;
            align-items: center;
            padding: .75rem 1.25rem;
            font-size: .875rem;
            font-weight: 500;
            color: #64748b;
            border-bottom: 2px solid transparent;
            transition: all .2s;
            white-space: nowrap;
            letter-spacing: .02em;
        }
        .nav-item:hover {
            color: #4f46e5;
            background: rgba(79, 70, 229, .04);
        }
        .nav-item.active {
            color: #4f46e5;
            border-bottom-color: #4f46e5;
            font-weight: 700;
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-hover {
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(15, 23, 42, .1);
        }
        details summary::-webkit-details-marker {
            display: none;
        }
        details[open] .fa-chevron-down {
            transform: rotate(180deg);
        }
        .fade-in {
            animation: fadeIn .8s ease both;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        @media (max-width: 768px) {
            .nav-item {
                padding: .625rem .875rem;
                font-size: .8125rem;
            }
        }
        @media (max-width: 520px) {
            .nav-item {
                padding: .5rem .75rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #4f46e5;
            --primary-light: #6366f1;
            --primary-dark: #4338ca;
            --bg: #f8fafc;
            --text: #0f172a;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 1rem;
            --radius-sm: 0.75rem;
            --transition: all .25s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
            background: #f8fafc;
            color: #0f172a;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }
        .container-site {
            width: 100%;
            max-width: 80rem;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        /* ===== 导航组件 ===== */
        .nav-item {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            padding: .8rem 1.25rem;
            font-size: .9rem;
            font-weight: 600;
            color: #475569;
            border-bottom: 2px solid transparent;
            border-radius: .5rem .5rem 0 0;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        .nav-item:hover {
            color: #4f46e5;
            background: #f1f5f9;
        }
        .nav-item.active {
            color: #4f46e5;
            border-bottom-color: #4f46e5;
            background: #eef2ff;
        }
        .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #4f46e5;
        }
        .nav-scroll {
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-scroll::-webkit-scrollbar {
            display: none;
        }
        /* ===== 卡片通用 ===== */
        .card-base {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid #eef1f6;
            box-shadow: 0 1px 3px rgba(15, 23, 42, .04);
            transition: var(--transition);
        }
        .card-base:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px -12px rgba(15, 23, 42, .12);
            border-color: #e0e7ff;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: linear-gradient(135deg, #4f46e5, #6366f1);
            color: #fff;
            font-weight: 600;
            font-size: .95rem;
            padding: .8rem 1.8rem;
            border-radius: 9999px;
            box-shadow: 0 4px 0 rgba(67, 56, 202, .35), 0 8px 24px -6px rgba(79, 70, 229, .4);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 0 rgba(67, 56, 202, .3), 0 16px 32px -6px rgba(79, 70, 229, .45);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 0 rgba(67, 56, 202, .4);
        }
        .btn-primary:focus-visible {
            outline: 2px solid #4f46e5;
            outline-offset: 3px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: #fff;
            color: #334155;
            font-weight: 600;
            font-size: .95rem;
            padding: .8rem 1.8rem;
            border-radius: 9999px;
            border: 1px solid #e2e8f0;
            box-shadow: 0 2px 6px rgba(15, 23, 42, .06);
            transition: var(--transition);
        }
        .btn-ghost:hover {
            border-color: #c7d2fe;
            color: #4f46e5;
            background: #f8faff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px -6px rgba(79, 70, 229, .15);
        }
        .btn-ghost:active {
            transform: translateY(0);
        }
        .btn-ghost:focus-visible {
            outline: 2px solid #c7d2fe;
            outline-offset: 3px;
        }
        /* ===== 徽章/标签 ===== */
        .badge-sm {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            font-size: .72rem;
            font-weight: 600;
            padding: .3rem .8rem;
            border-radius: 9999px;
            letter-spacing: .02em;
            white-space: nowrap;
        }
        .badge-indigo {
            background: #eef2ff;
            color: #4f46e5;
            border: 1px solid #e0e7ff;
        }
        .badge-green {
            background: #ecfdf5;
            color: #059669;
            border: 1px solid #d1fae5;
        }
        .badge-sky {
            background: #f0f9ff;
            color: #0284c7;
            border: 1px solid #e0f2fe;
        }
        /* ===== 搜索 ===== */
        .search-input {
            width: 100%;
            background: transparent;
            border: none;
            outline: none;
            font-size: .875rem;
            color: #334155;
        }
        .search-input::placeholder {
            color: #94a3b8;
        }
        .search-wrap:focus-within {
            background: #fff;
            border-color: #a5b4fc;
            box-shadow: 0 0 0 3px rgba(99, 102, 241, .12);
        }
        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid #eef1f6;
            border-radius: var(--radius-sm);
            background: #fff;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: #e0e7ff;
            box-shadow: 0 4px 16px rgba(15, 23, 42, .04);
        }
        .faq-q {
            font-weight: 600;
            color: #1e293b;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.15rem 1.35rem;
            font-size: .95rem;
            user-select: none;
        }
        .faq-a {
            padding: 0 1.35rem 1.25rem;
            color: #64748b;
            font-size: .9rem;
            line-height: 1.75;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-icon {
            transition: transform .25s ease;
            color: #94a3b8;
        }
        /* ===== 进度条 ===== */
        .progress-track {
            height: 8px;
            background: #eef2f7;
            border-radius: 9999px;
            overflow: hidden;
        }
        .progress-fill {
            height: 100%;
            border-radius: 9999px;
            background: linear-gradient(90deg, #4f46e5, #818cf8);
        }
        /* ===== 表格/对比 ===== */
        .compare-box {
            border-radius: var(--radius);
            background: #fff;
            border: 1px solid #eef1f6;
            transition: var(--transition);
            overflow: hidden;
        }
        .compare-box:hover {
            box-shadow: 0 12px 32px -8px rgba(15, 23, 42, .1);
        }
        .compare-head {
            padding: 1rem 1.3rem;
            font-weight: 700;
            font-size: .9rem;
            letter-spacing: .02em;
            border-bottom: 1px solid #f1f5f9;
        }
        .compare-row {
            display: flex;
            align-items: center;
            gap: .6rem;
            padding: .85rem 1.3rem;
            font-size: .88rem;
            border-bottom: 1px solid #f8fafc;
            color: #475569;
        }
        .compare-row:last-child {
            border-bottom: none;
        }
        /* ===== 移动菜单 ===== */
        #mobileMenu {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        #mobileMenu.open {
            max-height: 300px;
        }
        /* ===== 图片悬停 ===== */
        .img-zoom {
            overflow: hidden;
            border-radius: var(--radius);
        }
        .img-zoom img {
            transition: transform .6s cubic-bezier(.22, 1, .36, 1);
        }
        .img-zoom:hover img {
            transform: scale(1.04);
        }
        /* ===== 动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp .8s ease both;
        }
        .delay-100 {
            animation-delay: .1s;
        }
        .delay-200 {
            animation-delay: .2s;
        }
        .delay-300 {
            animation-delay: .3s;
        }
        /* ===== 响应式 ===== */
        @media (max-width: 768px) {
            .nav-item {
                padding: .7rem .95rem;
                font-size: .82rem;
            }
            .btn-primary,
            .btn-ghost {
                padding: .7rem 1.3rem;
                font-size: .88rem;
            }
        }
        @media (max-width: 520px) {
            .nav-item {
                padding: .65rem .75rem;
                font-size: .78rem;
            }
            .hero-title {
                font-size: 1.8rem !important;
                line-height: 1.3 !important;
            }
            .section-pad {
                padding: 3rem 0 !important;
            }
        }
        .section-pad {
            padding: 5rem 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #0f172a;
            line-height: 1.3;
        }
        .section-sub {
            color: #64748b;
            font-size: .98rem;
            max-width: 42rem;
            line-height: 1.7;
        }
        /* 滚动条美化 */
        .custom-scroll {
            scrollbar-width: thin;
            scrollbar-color: #cbd5e1 transparent;
        }
        .custom-scroll::-webkit-scrollbar {
            height: 6px;
            width: 6px;
        }
        .custom-scroll::-webkit-scrollbar-thumb {
            background: #cbd5e1;
            border-radius: 9999px;
        }
        .custom-scroll::-webkit-scrollbar-track {
            background: transparent;
        }

/* roulang page: article */
:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-soft: #eef2ff;
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #0f172a;
    --text-soft: #64748b;
    --border: #e2e8f0;
    --radius: 1rem;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.12);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

button,
input {
    font-family: inherit;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(14px);
    box-shadow: 0 1px 0 rgba(226, 232, 240, 0.8);
}

.nav-item {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    padding: 0.5rem 1.1rem;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 600;
    color: #64748b;
    transition: all 0.2s ease;
}

.nav-item:hover {
    background: #eef2ff;
    color: #4f46e5;
}

.nav-item.active {
    background: #4f46e5;
    color: #fff;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
}

.page-banner {
    background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.93) 0%, rgba(79, 70, 229, 0.85) 100%), url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    padding: 3.5rem 0 3rem;
    position: relative;
}

@media (min-width: 1024px) {
    .page-banner {
        padding: 5rem 0 4rem;
    }
}

.section-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #4f46e5;
    background: #eef2ff;
    padding: 0.3rem 0.8rem;
    border-radius: 999px;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 1.75rem;
    line-height: 1.2;
    font-weight: 800;
    color: #0f172a;
    letter-spacing: -0.02em;
}

@media (min-width: 1024px) {
    .section-title {
        font-size: 2.25rem;
    }
}

.card {
    background: #fff;
    border: 1px solid #eef2f6;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-4px);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    font-weight: 700;
    color: #4f46e5;
    background: #eef2ff;
    border: 1px solid #e0e7ff;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
}

.tag {
    display: inline-flex;
    align-items: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: #475569;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    transition: all 0.2s ease;
}

.tag:hover {
    background: #eef2ff;
    color: #4f46e5;
    border-color: #c7d2fe;
}

.article-body {
    font-size: 1.0625rem;
    line-height: 1.9;
    color: #334155;
}

.article-body h2 {
    font-size: 1.5rem;
    font-weight: 800;
    color: #0f172a;
    margin: 2em 0 0.75em;
    padding-bottom: 0.5em;
    border-bottom: 2px solid #eef2ff;
}

.article-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #0f172a;
    margin: 1.75em 0 0.6em;
}

.article-body p {
    margin-bottom: 1.25em;
}

.article-body a {
    color: #4f46e5;
    font-weight: 600;
    border-bottom: 1px solid #c7d2fe;
    transition: color 0.2s ease;
}

.article-body a:hover {
    color: #4338ca;
}

.article-body ul,
.article-body ol {
    margin: 0 0 1.5em 1.25em;
}

.article-body li {
    margin-bottom: 0.45em;
}

.article-body strong {
    color: #0f172a;
}

.article-body blockquote {
    margin: 1.5em 0;
    padding: 1rem 1.5rem;
    background: #f8fafc;
    border-left: 4px solid #4f46e5;
    border-radius: 0 0.75rem 0.75rem 0;
    color: #475569;
}

.article-body img {
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    margin: 1.5em 0;
}

.article-body code {
    background: #f1f5f9;
    padding: 0.15rem 0.4rem;
    border-radius: 0.375rem;
    font-size: 0.9em;
    color: #4338ca;
}

.article-body pre {
    background: #0f172a;
    color: #e2e8f0;
    padding: 1.25rem 1.5rem;
    border-radius: 1rem;
    overflow-x: auto;
    margin-bottom: 1.5em;
}

.article-body pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

.faq-item {
    background: #fff;
    border: 1px solid #eef2f6;
    border-radius: 1rem;
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow);
}

.faq-item summary {
    font-weight: 700;
    color: #0f172a;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    font-size: 1.4rem;
    font-weight: 500;
    color: #4f46e5;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item > div {
    margin-top: 0.85rem;
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.75;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.95rem;
    color: #fff;
    background: #4f46e5;
    padding: 0.8rem 1.8rem;
    border-radius: 999px;
    box-shadow: 0 10px 24px rgba(79, 70, 229, 0.3);
    transition: all 0.25s ease;
    border: 2px solid transparent;
}

.btn-primary:hover {
    background: #4338ca;
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(79, 70, 229, 0.4);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.9rem;
    color: #4f46e5;
    background: transparent;
    padding: 0.6rem 1.4rem;
    border-radius: 999px;
    border: 2px solid #c7d2fe;
    transition: all 0.25s ease;
}

.btn-outline:hover {
    background: #eef2ff;
    border-color: #4f46e5;
}

.btn-white {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
    color: #4f46e5;
    background: #fff;
    padding: 0.8rem 2rem;
    border-radius: 999px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    transition: all 0.25s ease;
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.18);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
    padding: 0.8rem 2rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.25s ease;
    backdrop-filter: blur(8px);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.cta-section {
    background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(79, 70, 229, 0.88) 100%), url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
}

.sidebar-card {
    background: #fff;
    border: 1px solid #eef2f6;
    border-radius: 1.25rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

@media (max-width: 767px) {
    .section-title {
        font-size: 1.5rem;
    }

    .page-banner {
        padding: 2.5rem 0 2rem;
    }

    .article-body {
        font-size: 1rem;
    }
}

/* roulang page: category2 */
:root {
            --primary: #4f46e5;
            --primary-hover: #4338ca;
            --primary-light: #eef2ff;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #0f172a;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 1rem;
            --radius-lg: 1.5rem;
            --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 4px 20px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }

        .nav-item {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.75rem 1.1rem;
            font-size: 0.875rem;
            font-weight: 600;
            color: #475569;
            border-radius: 9999px;
            white-space: nowrap;
            transition: all 0.25s ease;
            border-bottom: 2px solid transparent;
            position: relative;
            flex-shrink: 0;
        }
        .nav-item:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-item.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 99px;
            background: var(--primary);
        }

        .card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(79, 70, 229, 0.2);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.65rem 1.4rem;
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
            transition: all 0.25s ease;
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
            transform: translateY(-1px);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .btn-white:hover {
            background: #f1f5f9;
            transform: translateY(-1px);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.28rem 0.8rem;
            border-radius: 9999px;
            font-size: 0.72rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-green {
            background: #ecfdf5;
            color: #059669;
        }
        .badge-amber {
            background: #fffbeb;
            color: #d97706;
        }
        .badge-purple {
            background: #f5f3ff;
            color: #7c3aed;
        }
        .badge-rose {
            background: #fff1f2;
            color: #e11d48;
        }

        .faq-btn {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            text-align: left;
            background: transparent;
            border: none;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
            transition: color 0.2s;
        }
        .faq-btn:hover {
            color: var(--primary);
        }
        .faq-icon {
            width: 1.75rem;
            height: 1.75rem;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-content-inner {
            padding: 0 1.5rem 1.5rem;
            color: var(--text-muted);
            font-size: 0.925rem;
            line-height: 1.8;
        }

        .comparison-card {
            border-radius: var(--radius-lg);
            transition: all 0.3s ease;
        }
        .comparison-card-winner {
            border: 2px solid var(--primary);
            box-shadow: 0 16px 40px rgba(79, 70, 229, 0.14);
            position: relative;
        }
        .comparison-card-winner::before {
            content: '推荐';
            position: absolute;
            top: -14px;
            left: 24px;
            background: var(--primary);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.2rem 0.9rem;
            border-radius: 99px;
            letter-spacing: 0.02em;
        }

        .hero-search input {
            height: 48px;
        }
        @media (min-width: 768px) {
            .hero-search input {
                height: 52px;
            }
        }

        .footer-link {
            color: #94a3b8;
            transition: color 0.2s;
        }
        .footer-link:hover {
            color: #fff;
        }

        @media (max-width: 768px) {
            .nav-item {
                padding: 0.65rem 0.9rem;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 640px) {
            .faq-btn {
                padding: 1rem 1.1rem;
                font-size: 0.875rem;
            }
            .faq-content-inner {
                padding: 0 1.1rem 1.1rem;
            }
        }