/* ========== XNAIR 内容区域专属样式（xnair-命名空间，与头部底部完全隔离） ========== */

/* 内容区域局部变量 */
.xnair-content-wrap {
    --xnair-deep: #0b2545;
    --xnair-accent: #134074;
    --xnair-link: #134074;
    --xnair-hover: #1a5a9e;
    --xnair-light-bg: #f5f7fa;
    --xnair-border: #e2e8f0;
    --xnair-text: #334155;
    --xnair-text-light: #64748b;
    --xnair-white: #ffffff;
    --xnair-card-shadow: 0 2px 12px rgba(0,0,0,0.06);
    --xnair-radius: 6px;
    font-family: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--xnair-text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

/* 容器 */
.xnair-container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ========== 面包屑 ========== */
.xnair-breadcrumb-wrap {
    background: var(--xnair-light-bg);
    border-bottom: 1px solid var(--xnair-border);
    padding: 14px 0;
}
.xnair-breadcrumb ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    font-size: 15px;
    color: var(--xnair-text-light);
}
.xnair-breadcrumb a {
    color: var(--xnair-link);
    text-decoration: none;
    font-weight: 500;
}
.xnair-breadcrumb a:hover {
    text-decoration: underline;
    color: var(--xnair-hover);
}
.xnair-breadcrumb-sep {
    color: #cbd5e1;
    user-select: none;
}
.xnair-breadcrumb [aria-current="page"] {
    color: var(--xnair-text);
    font-weight: 600;
}

/* ========== Hero 首屏 ========== */
.xnair-hero {
    padding: 50px 0 56px;
    background: var(--xnair-white);
}
.xnair-hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 44px;
    align-items: center;
}
.xnair-hero-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--xnair-deep);
    line-height: 1.3;
    margin-bottom: 18px;
    letter-spacing: -0.3px;
}
.xnair-hero-sub {
    font-size: 1.05rem;
    color: var(--xnair-text-light);
    margin-bottom: 26px;
    max-width: 580px;
}
.xnair-hero-params {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}
.xnair-param-item {
    display: flex;
    flex-direction: column;
    background: var(--xnair-light-bg);
    padding: 14px 20px;
    border-radius: var(--xnair-radius);
    min-width: 140px;
}
.xnair-param-value {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--xnair-deep);
}
.xnair-param-label {
    font-size: 0.85rem;
    color: var(--xnair-text-light);
    margin-top: 2px;
}
.xnair-hero-img img {
    width: 100%;
    height: auto;
    border-radius: var(--xnair-radius);
    display: block;
}

/* ========== Section 通用标题 ========== */
.xnair-section-title {
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--xnair-deep);
    margin-bottom: 12px;
    line-height: 1.35;
}
.xnair-section-intro {
    font-size: 1rem;
    color: var(--xnair-text-light);
    margin-bottom: 32px;
    max-width: 860px;
}
.xnair-sub-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--xnair-deep);
    margin: 32px 0 16px;
}

/* ========== 服务网格 ========== */
.xnair-services {
    padding: 52px 0;
    background: var(--xnair-light-bg);
}
.xnair-service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.xnair-service-card {
    background: var(--xnair-white);
    border: 1px solid var(--xnair-border);
    border-radius: var(--xnair-radius);
    padding: 24px 22px;
    box-shadow: var(--xnair-card-shadow);
    display: flex;
    flex-direction: column;
}
.xnair-service-icon-wrap {
    margin-bottom: 12px;
}
.xnair-service-icon {
    width: 100%;
    height: 180px;
    display: block;
}
.xnair-service-card-title {
    font-size: 1.08rem;
    font-weight: 650;
    color: var(--xnair-deep);
    margin-bottom: 10px;
}
.xnair-service-card-desc {
    font-size: 0.93rem;
    color: var(--xnair-text-light);
    margin-bottom: 14px;
    flex-grow: 1;
}
.xnair-inline-link {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--xnair-link);
    font-weight: 550;
    text-decoration: none;
    margin-right: 14px;
    margin-bottom: 4px;
    transition: color 0.2s;
}
.xnair-inline-link:hover {
    color: var(--xnair-hover);
    text-decoration: underline;
}

/* ========== 技术规格 ========== */
.xnair-tech-specs {
    padding: 52px 0;
    background: var(--xnair-white);
}
.xnair-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 20px;
    border: 1px solid var(--xnair-border);
    border-radius: var(--xnair-radius);
}
.xnair-specs-table {
    width: 100%;
    min-width: 780px;
    border-collapse: collapse;
    font-size: 0.93rem;
}
.xnair-table-caption {
    caption-side: top;
    text-align: left;
    font-weight: 600;
    color: var(--xnair-deep);
    padding: 14px 16px 10px;
    font-size: 0.95rem;
}
.xnair-specs-table thead {
    background: var(--xnair-deep);
    color: var(--xnair-white);
}
.xnair-specs-table th {
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 0.88rem;
    white-space: nowrap;
}
.xnair-specs-table td {
    padding: 11px 14px;
    border-bottom: 1px solid var(--xnair-border);
    vertical-align: top;
}
.xnair-specs-table tbody tr:nth-child(even) {
    background: #fafbfc;
}
.xnair-specs-table tbody tr:hover {
    background: #f1f5f9;
}
.xnair-table-link {
    color: var(--xnair-link);
    font-weight: 550;
    text-decoration: none;
}
.xnair-table-link:hover {
    text-decoration: underline;
    color: var(--xnair-hover);
}
.xnair-tech-note {
    font-size: 0.93rem;
    color: var(--xnair-text-light);
    background: #fefdf6;
    border-left: 3px solid #e2c744;
    padding: 14px 18px;
    border-radius: 0 var(--xnair-radius) var(--xnair-radius) 0;
    margin-bottom: 10px;
}
.xnair-component-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.xnair-comp-link {
    display: inline-block;
    background: var(--xnair-light-bg);
    padding: 9px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--xnair-link);
    font-weight: 500;
    text-decoration: none;
    border: 1px solid var(--xnair-border);
    transition: all 0.2s;
}
.xnair-comp-link:hover {
    background: var(--xnair-deep);
    color: var(--xnair-white);
    border-color: var(--xnair-deep);
}

/* ========== 流程板块 ========== */
.xnair-process {
    padding: 52px 0;
    background: var(--xnair-light-bg);
}
.xnair-process-steps {
    display: flex;
    flex-direction: column;
    gap: 22px;
}
.xnair-process-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    background: var(--xnair-white);
    border-radius: var(--xnair-radius);
    padding: 22px 24px;
    border: 1px solid var(--xnair-border);
    box-shadow: var(--xnair-card-shadow);
}
.xnair-step-number {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--xnair-deep);
    color: var(--xnair-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}
.xnair-step-title {
    font-size: 1.08rem;
    font-weight: 650;
    color: var(--xnair-deep);
    margin-bottom: 6px;
}
.xnair-step-body p {
    font-size: 0.93rem;
    color: var(--xnair-text-light);
    line-height: 1.65;
}

/* ========== 案例板块 ========== */
.xnair-cases {
    padding: 52px 0;
    background: var(--xnair-white);
}
.xnair-case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.xnair-case-card {
    display: block;
    background: var(--xnair-light-bg);
    border: 1px solid var(--xnair-border);
    border-radius: var(--xnair-radius);
    padding: 20px 18px;
    text-decoration: none;
    transition: all 0.25s;
    color: inherit;
}
.xnair-case-card:hover {
    border-color: var(--xnair-accent);
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}
.xnair-case-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    background: var(--xnair-deep);
    color: #fff;
    padding: 3px 10px;
    border-radius: 12px;
    margin-bottom: 10px;
}
.xnair-case-title {
    font-size: 1rem;
    font-weight: 650;
    color: var(--xnair-deep);
    margin-bottom: 6px;
    line-height: 1.4;
}
.xnair-case-meta {
    font-size: 0.85rem;
    color: var(--xnair-text-light);
}

/* ========== FAQ ========== */
.xnair-faq {
    padding: 52px 0;
    background: var(--xnair-light-bg);
}
.xnair-faq-list {
    max-width: 860px;
}
.xnair-faq-item {
    background: var(--xnair-white);
    border: 1px solid var(--xnair-border);
    border-radius: var(--xnair-radius);
    margin-bottom: 10px;
    box-shadow: var(--xnair-card-shadow);
}
.xnair-faq-question {
    padding: 16px 20px;
    font-weight: 600;
    font-size: 1rem;
    color: var(--xnair-deep);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.xnair-faq-question::-webkit-details-marker {
    display: none;
}
.xnair-faq-question::after {
    content: '+';
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--xnair-accent);
    flex-shrink: 0;
    margin-left: 12px;
    transition: transform 0.25s;
}
.xnair-faq-item[open] .xnair-faq-question::after {
    content: '−';
    transform: rotate(0deg);
}
.xnair-faq-answer {
    padding: 0 20px 18px;
    font-size: 0.93rem;
    color: var(--xnair-text-light);
    line-height: 1.7;
}

/* ========== 品质认证 ========== */
.xnair-quality {
    padding: 52px 0;
    background: var(--xnair-white);
}
.xnair-quality-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    margin-bottom: 28px;
}
.xnair-quality-card {
    background: var(--xnair-light-bg);
    border: 1px solid var(--xnair-border);
    border-radius: var(--xnair-radius);
    padding: 20px 18px;
}
.xnair-quality-card-title {
    font-size: 1.05rem;
    font-weight: 650;
    color: var(--xnair-deep);
    margin-bottom: 12px;
}
.xnair-quality-list {
    list-style: disc;
    padding-left: 20px;
    font-size: 0.9rem;
    color: var(--xnair-text-light);
    line-height: 1.7;
}
.xnair-quality-list li {
    margin-bottom: 6px;
}
.xnair-quality-statement {
    background: var(--xnair-deep);
    color: #e2e8f0;
    padding: 20px 24px;
    border-radius: var(--xnair-radius);
    font-size: 0.93rem;
    line-height: 1.7;
}

/* ========== 相关内链 ========== */
.xnair-related {
    padding: 52px 0;
    background: var(--xnair-light-bg);
}
.xnair-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.xnair-related-col-title {
    font-size: 1.05rem;
    font-weight: 650;
    color: var(--xnair-deep);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--xnair-accent);
}
.xnair-related-list {
    list-style: none;
}
.xnair-related-list li {
    margin-bottom: 8px;
}
.xnair-related-list a {
    font-size: 0.93rem;
    color: var(--xnair-link);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}
.xnair-related-list a:hover {
    color: var(--xnair-hover);
    text-decoration: underline;
}

/* ========== 响应式：平板（≤1024px） ========== */
@media(max-width: 1024px) {
    .xnair-hero-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .xnair-hero-title {
        font-size: 1.7rem;
    }
    .xnair-service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .xnair-case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .xnair-quality-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .xnair-related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========== 响应式：手机端（≤768px） ========== */
@media(max-width: 768px) {
    .xnair-container {
        padding: 0 18px;
    }
    .xnair-breadcrumb ol {
        font-size: 13px;
        gap: 4px;
    }
    .xnair-hero {
        padding: 30px 0 36px;
    }
    .xnair-hero-title {
        font-size: 1.4rem;
    }
    .xnair-hero-sub {
        font-size: 0.95rem;
    }
    .xnair-hero-params {
        gap: 10px;
    }
    .xnair-param-item {
        min-width: 100px;
        padding: 10px 14px;
        font-size: 0.85rem;
    }
    .xnair-param-value {
        font-size: 1rem;
    }
    .xnair-section-title {
        font-size: 1.35rem;
    }
    .xnair-service-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .xnair-service-card {
        padding: 18px 16px;
    }
    .xnair-process-step {
        flex-direction: column;
        gap: 12px;
        padding: 18px 16px;
    }
    .xnair-step-number {
        width: 42px;
        height: 42px;
        font-size: 1rem;
    }
    .xnair-case-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .xnair-quality-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .xnair-related-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .xnair-table-wrap {
        margin-left: -18px;
        margin-right: -18px;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
    .xnair-specs-table {
        min-width: 650px;
        font-size: 0.82rem;
    }
    .xnair-specs-table th,
    .xnair-specs-table td {
        padding: 9px 10px;
    }
    .xnair-component-links {
        gap: 7px;
    }
    .xnair-comp-link {
        padding: 7px 12px;
        font-size: 0.82rem;
    }
    .xnair-faq-question {
        font-size: 0.93rem;
        padding: 14px 16px;
    }
    .xnair-faq-answer {
        padding: 0 16px 14px;
        font-size: 0.88rem;
    }
    .xnair-quality-statement {
        padding: 16px 18px;
        font-size: 0.88rem;
    }
    .xnair-case-card {
        padding: 16px 14px;
    }
}