/* roulang page: index */
:root {
            --primary-dark: #0A192F;
            --primary-navy: #0F172A;
            --radar-teal: #0D9488;
            --sky-blue: #38BDF8;
            --alert-orange: #F97316;
            --bg-canvas: #F8FAFC;
            --bg-card: #FFFFFF;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-soft: rgba(15, 23, 42, 0.08);
            --border-card: rgba(15, 23, 42, 0.06);
            --radius-lg: 20px;
            --radius-xl: 24px;
            --radius-pill: 9999px;
            --shadow-subtle: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-tap-highlight-color: transparent;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-smooth);
        }

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

        button, input, select, textarea {
            font: inherit;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 顶部实用条 */
        .utility-bar {
            height: 38px;
            background-color: #F1F5F9;
            border-bottom: 1px solid rgba(15, 23, 42, 0.06);
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
        }

        .utility-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: var(--radar-teal);
            border-radius: 50%;
            margin-right: 6px;
            box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.2);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.4); }
            70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(13, 148, 136, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(13, 148, 136, 0); }
        }

        /* 粘性主导航 */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-soft);
            transition: var(--transition-smooth);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
        }

        .nav-brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary-dark), var(--radar-teal));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            box-shadow: 0 4px 10px rgba(13, 148, 136, 0.3);
        }

        .nav-brand-icon svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            padding: 8px 0;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--radar-teal);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--radar-teal);
            transition: var(--transition-smooth);
            border-radius: 2px;
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .btn-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--radar-teal) 100%);
            color: #FFFFFF;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            box-shadow: 0 4px 12px rgba(10, 25, 47, 0.15);
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .btn-header:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(13, 148, 136, 0.25);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--text-heading);
            margin: 5px 0;
            transition: var(--transition-smooth);
        }

        /* 徽章通用 */
        .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            background: rgba(13, 148, 136, 0.1);
            color: var(--radar-teal);
            border: 1px solid rgba(13, 148, 136, 0.2);
        }

        .data-badge.orange {
            background: rgba(249, 115, 22, 0.1);
            color: var(--alert-orange);
            border-color: rgba(249, 115, 22, 0.2);
        }

        .data-badge.blue {
            background: rgba(56, 189, 248, 0.1);
            color: #0284C7;
            border-color: rgba(56, 189, 248, 0.3);
        }

        .data-badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: currentColor;
        }

        /* 板块通用标准 */
        .page-section {
            padding: 96px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 56px auto;
        }

        .section-tag {
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.8px;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Hero：白皮书获客与空域全景（硬性蓝图执行） */
        .hero-section {
            background: radial-gradient(circle at 80% 20%, #1E293B 0%, var(--primary-dark) 100%), url('/assets/images/3cb8a37818770dc8.jpg') center/cover no-repeat;
            background-blend-mode: overlay;
            color: #FFFFFF;
            padding: 100px 0 110px 0;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 25, 47, 0.85) 0%, rgba(2, 6, 23, 0.95) 100%);
            pointer-events: none;
        }

        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -1px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #FFFFFF 30%, var(--sky-blue) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 16px;
            line-height: 1.8;
            color: #CBD5E1;
            margin-bottom: 32px;
        }

        .hero-features-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 36px;
        }

        .hero-feat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #E2E8F0;
        }

        .hero-feat-item svg {
            width: 18px;
            height: 18px;
            fill: var(--radar-teal);
            flex-shrink: 0;
        }

        /* Hero 右侧：白皮书封面 + 目录 + 留资表单卡片 */
        .whitepaper-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-xl);
            padding: 32px;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
            position: relative;
        }

        .whitepaper-card::after {
            content: '行业权威指南';
            position: absolute;
            top: 20px;
            right: 20px;
            background: var(--alert-orange);
            color: #FFFFFF;
            font-size: 11px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
        }

        .wp-header {
            display: flex;
            gap: 20px;
            margin-bottom: 24px;
            align-items: center;
        }

        .wp-cover {
            width: 85px;
            height: 115px;
            background: linear-gradient(135deg, #1E293B, #0F172A);
            border: 1px solid var(--sky-blue);
            border-radius: 8px;
            padding: 10px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            box-shadow: 0 8px 16px rgba(0,0,0,0.3);
            flex-shrink: 0;
        }

        .wp-cover-title {
            font-size: 10px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
        }

        .wp-cover-tag {
            font-size: 8px;
            color: var(--sky-blue);
        }

        .wp-meta h3 {
            font-size: 18px;
            color: #FFFFFF;
            margin-bottom: 6px;
        }

        .wp-meta p {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.4;
        }

        .wp-catalog {
            background: rgba(15, 23, 42, 0.5);
            border-radius: 12px;
            padding: 14px 16px;
            margin-bottom: 22px;
            border: 1px dashed rgba(255, 255, 255, 0.15);
        }

        .wp-catalog-title {
            font-size: 12px;
            font-weight: 600;
            color: var(--sky-blue);
            margin-bottom: 6px;
            text-transform: uppercase;
        }

        .wp-catalog ul {
            list-style: none;
            font-size: 12px;
            color: #CBD5E1;
        }

        .wp-catalog li {
            margin-bottom: 4px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .wp-catalog li::before {
            content: '•';
            color: var(--radar-teal);
            font-weight: bold;
        }

        .inline-wp-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .form-row-group {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }

        .input-dark {
            width: 100%;
            background: rgba(15, 23, 42, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 10px;
            padding: 10px 14px;
            color: #FFFFFF;
            font-size: 13px;
            outline: none;
            transition: var(--transition-smooth);
        }

        .input-dark:focus {
            border-color: var(--sky-blue);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
        }

        .btn-wp-download {
            background: linear-gradient(135deg, var(--radar-teal) 0%, #059669 100%);
            color: #FFFFFF;
            border: none;
            border-radius: 10px;
            padding: 12px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-align: center;
            box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
        }

        .btn-wp-download:hover {
            filter: brightness(1.1);
            transform: translateY(-1px);
        }

        /* 核心卡片通用 */
        .card-big {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-card);
            padding: 36px;
            box-shadow: var(--shadow-subtle);
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .card-big:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(13, 148, 136, 0.2);
        }

        /* 板块 2：公司亮点 / 体系介绍 (ID: #intro) */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .intro-visual {
            position: relative;
        }

        .intro-img-main {
            border-radius: var(--radius-xl);
            box-shadow: 0 20px 35px -10px rgba(15, 23, 42, 0.15);
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .intro-float-badge {
            position: absolute;
            bottom: -20px;
            right: -20px;
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            box-shadow: 0 20px 30px rgba(0, 0, 0, 0.1);
            border: 1px solid var(--border-soft);
            max-width: 240px;
        }

        .intro-float-badge .number {
            font-size: 26px;
            font-weight: 800;
            color: var(--radar-teal);
            line-height: 1;
            margin-bottom: 4px;
        }

        .intro-float-badge .label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .intro-content h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 20px;
            line-height: 1.35;
        }

        .intro-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .intro-checklist {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .intro-check-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            color: var(--text-heading);
            background: #FFFFFF;
            padding: 14px 18px;
            border-radius: 12px;
            border: 1px solid var(--border-soft);
        }

        .intro-check-item svg {
            width: 20px;
            height: 20px;
            fill: var(--radar-teal);
            margin-top: 1px;
            flex-shrink: 0;
        }

        /* 板块 3：核心优势矩阵 (ID: #advantage) */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .adv-card {
            background: #FFFFFF;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-card);
            padding: 32px;
            position: relative;
            box-shadow: var(--shadow-subtle);
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .adv-top {
            margin-bottom: 16px;
        }

        .adv-icon-box {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(13, 148, 136, 0.1), rgba(56, 189, 248, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--radar-teal);
        }

        .adv-icon-box svg {
            width: 26px;
            height: 26px;
            fill: currentColor;
        }

        .adv-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .adv-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        .adv-index {
            align-self: flex-end;
            font-size: 28px;
            font-weight: 800;
            color: #E2E8F0;
            margin-top: 16px;
            font-family: monospace;
        }

        /* 板块 4：热招职位与航电人才矩阵 (硬性蓝图：热招职位) (ID: #careers) */
        .career-section {
            background-color: #F1F5F9;
        }

        .career-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .career-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border-card);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition-smooth);
        }

        .career-card:hover {
            transform: translateY(-3px);
            border-color: var(--radar-teal);
            box-shadow: var(--shadow-subtle);
        }

        .career-header-row {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 12px;
        }

        .career-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
        }

        .career-salary {
            font-size: 15px;
            font-weight: 700;
            color: var(--alert-orange);
        }

        .career-tags {
            display: flex;
            gap: 8px;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .career-tag-pill {
            font-size: 12px;
            background: #F8FAFC;
            color: var(--text-muted);
            padding: 3px 8px;
            border-radius: 6px;
            border: 1px solid #E2E8F0;
        }

        .career-duty {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .btn-career-apply {
            display: block;
            text-align: center;
            padding: 10px;
            font-size: 13px;
            font-weight: 600;
            color: var(--radar-teal);
            border: 1px solid rgba(13, 148, 136, 0.3);
            border-radius: 8px;
            transition: var(--transition-smooth);
        }

        .btn-career-apply:hover {
            background: var(--radar-teal);
            color: #FFFFFF;
        }

        /* 板块 5：成长路径与技术演进 (硬性蓝图：成长路径) (ID: #roadmap) */
        .roadmap-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .roadmap-timeline::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 5%;
            right: 5%;
            height: 2px;
            background: #E2E8F0;
            z-index: 1;
        }

        .roadmap-node {
            position: relative;
            z-index: 2;
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-subtle);
        }

        .roadmap-dot {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #FFFFFF;
            border: 4px solid var(--radar-teal);
            margin: 0 auto 16px auto;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 12px;
            color: var(--radar-teal);
        }

        .roadmap-phase {
            font-size: 12px;
            color: var(--sky-blue);
            font-weight: 700;
            text-transform: uppercase;
            margin-bottom: 6px;
        }

        .roadmap-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .roadmap-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 板块 6：团队氛围与空管实战环境 (硬性蓝图：团队氛围) (ID: #culture) */
        .culture-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .culture-gallery {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .culture-img {
            border-radius: var(--radius-lg);
            object-fit: cover;
            width: 100%;
            height: 200px;
            box-shadow: var(--shadow-subtle);
        }

        .culture-img.tall {
            height: 416px;
            grid-row: span 2;
        }

        .culture-text-card {
            padding-left: 20px;
        }

        .culture-text-card h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
        }

        .culture-text-card p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .culture-perks {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .perk-box {
            background: #FFFFFF;
            padding: 16px;
            border-radius: 12px;
            border: 1px solid var(--border-soft);
        }

        .perk-box strong {
            display: block;
            font-size: 14px;
            color: var(--text-heading);
            margin-bottom: 4px;
        }

        .perk-box span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 板块 7：深色沉浸式空管应用与理念 (ID: #concept) */
        .concept-section {
            background: radial-gradient(circle at center, #1E293B 0%, var(--primary-dark) 100%);
            color: #FFFFFF;
            padding: 90px 0;
        }

        .concept-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            position: relative;
            margin-top: 50px;
        }

        .concept-step-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            padding: 24px 18px;
            text-align: center;
            backdrop-filter: blur(10px);
            transition: var(--transition-smooth);
        }

        .concept-step-item:hover {
            border-color: var(--sky-blue);
            background: rgba(255, 255, 255, 0.07);
        }

        .step-num {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--radar-teal);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            margin: 0 auto 14px auto;
        }

        .step-title {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .step-desc {
            font-size: 12px;
            color: #94A3B8;
            line-height: 1.5;
        }

        /* 板块 8：关键性能指标与数据统计条 (ID: #metrics) */
        .metrics-banner {
            background: #FFFFFF;
            border-radius: var(--radius-xl);
            padding: 40px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-subtle);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

        .metric-col {
            position: relative;
        }

        .metric-col:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 20%;
            height: 60%;
            width: 1px;
            background: #E2E8F0;
        }

        .metric-val {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -1px;
            margin-bottom: 6px;
            font-family: monospace;
        }

        .metric-val span {
            color: var(--radar-teal);
            font-size: 24px;
        }

        .metric-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
        }

        /* 板块 9：低空智联资讯动态 (硬性蓝图：资讯) (ID: #news) */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition-smooth);
            box-shadow: var(--shadow-subtle);
        }

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

        .news-thumb-box {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .news-thumb {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

        .news-card:hover .news-thumb {
            transform: scale(1.05);
        }

        .news-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .news-heading {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-snippet {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 18px;
        }

        .news-link-btn {
            font-size: 13px;
            font-weight: 600;
            color: var(--radar-teal);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 板块 10：FAQ 常见技术与法规解答 (硬性蓝图：FAQ) (ID: #faq) */
        .faq-container {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: #FFFFFF;
            border-radius: 14px;
            border: 1px solid var(--border-soft);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .faq-item details {
            width: 100%;
        }

        .faq-item summary {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

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

        .faq-icon-arrow {
            width: 18px;
            height: 18px;
            fill: var(--text-muted);
            transition: transform 0.25s ease;
        }

        .faq-item details[open] summary .faq-icon-arrow {
            transform: rotate(180deg);
            fill: var(--radar-teal);
        }

        .faq-answer {
            padding: 0 24px 22px 24px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.75;
            border-top: 1px solid #F1F5F9;
            padding-top: 16px;
        }

        /* 板块 11：投递入口与空域技术演示预约 (硬性蓝图：投递入口) (ID: #contact) */
        .apply-cta-card {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #0F172A 100%);
            border-radius: var(--radius-xl);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 56px;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .apply-cta-card::after {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(13, 148, 136, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            position: relative;
            z-index: 2;
        }

        .cta-left h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-left p {
            font-size: 15px;
            color: #94A3B8;
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .cta-commitments {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cta-commit-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: #CBD5E1;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .cta-form label {
            font-size: 12px;
            color: #94A3B8;
            margin-bottom: -6px;
        }

        .input-cta {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 10px;
            padding: 12px 16px;
            color: #FFFFFF;
            font-size: 14px;
            outline: none;
            transition: var(--transition-smooth);
        }

        .input-cta:focus {
            border-color: var(--radar-teal);
            background: rgba(255, 255, 255, 0.12);
        }

        .btn-cta-submit {
            background: linear-gradient(135deg, var(--alert-orange) 0%, #EA580C 100%);
            color: #FFFFFF;
            border: none;
            border-radius: 10px;
            padding: 14px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
            transition: var(--transition-smooth);
            margin-top: 8px;
        }

        .btn-cta-submit:hover {
            filter: brightness(1.1);
            transform: translateY(-1px);
        }

        /* 板块 12：安全合规与运行保障服务条 (ID: #security) */
        .security-strip {
            background: #FFFFFF;
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
            padding: 40px 0;
        }

        .sec-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .sec-item {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .sec-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: #F1F5F9;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            flex-shrink: 0;
        }

        .sec-icon svg {
            width: 22px;
            height: 22px;
            fill: currentColor;
        }

        .sec-text strong {
            display: block;
            font-size: 14px;
            color: var(--text-heading);
            margin-bottom: 2px;
        }

        .sec-text span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 页脚规范 */
        .site-footer {
            background-color: var(--primary-dark);
            color: #94A3B8;
            padding: 72px 0 32px 0;
            font-size: 13px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
            gap: 48px;
            margin-bottom: 56px;
        }

        .footer-logo {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-desc {
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a:hover {
            color: var(--sky-blue);
        }

        .footer-bottom {
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .copyright-text {
            color: #64748B;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid, .intro-grid, .culture-grid, .cta-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .advantage-grid, .career-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .roadmap-timeline {
                grid-template-columns: repeat(2, 1fr);
            }
            .roadmap-timeline::before {
                display: none;
            }
            .concept-steps {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .utility-bar {
                display: none;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: #FFFFFF;
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--border-soft);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .btn-header {
                display: none;
            }
            .advantage-grid, .career-grid, .news-grid, .roadmap-timeline, .sec-grid, .metrics-banner {
                grid-template-columns: 1fr;
            }
            .metric-col:not(:last-child)::after {
                display: none;
            }
            .concept-steps {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .apply-cta-card {
                padding: 32px 20px;
            }
        }