:root {
      --bg:      #ffffff;
      --surface: #f7f7f8;
      --fg:      #1a1a1a;
      --muted:   #6b6b6b;
      --border:  #e5e5e5;
      --accent:  #1890ff;
      --accent-soft: color-mix(in oklch, var(--accent) 10%, transparent);
      --fg-soft:     color-mix(in oklch, var(--fg) 4%, transparent);
      --surface-alt: #f0f0f2;
      --surface-elevated: #ffffff;
      --font-display: 'Open Sans', system-ui, -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
      --font-body:    'Open Sans', system-ui, -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
      --font-mono:    ui-monospace, 'JetBrains Mono', 'SF Mono', Menlo, monospace;
      --fs-h1: clamp(36px, 5vw, 56px);
      --fs-h2: clamp(28px, 3.5vw, 42px);
      --fs-h3: 20px;
      --fs-lead: 18px;
      --fs-body: 16px;
      --fs-meta: 13px;
      --gap-xs: 8px;
      --gap-sm: 12px;
      --gap-md: 24px;
      --gap-lg: 40px;
      --gap-xl: 72px;
      --gap-2xl: 128px;
      --container: 1280px;
      --gutter: 48px;
      --radius: 8px;
      --radius-lg: 16px;
      --radius-xl: 24px;
    }

body {
      margin: 0;
      background: var(--bg);
      color: var(--fg);
      font-family: var(--font-body);
      font-size: var(--fs-body);
      line-height: 1.6;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

.section { padding-block: clamp(72px, 10vw, var(--gap-2xl)); }

.section-alt { background: var(--surface-alt); }

.section + .section { border-top: 1px solid var(--border); }

.section-header { margin-bottom: var(--gap-lg); }

.section-header h2 { margin-bottom: var(--gap-sm); }

.section-header .lead { margin-bottom: 0; }

.reveal { opacity: 0; transform: translateY(32px); transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1); }

.reveal-item { opacity: 0; transform: translateY(24px); transition: opacity 0.45s cubic-bezier(0.16, 1, 0.3, 1), transform 0.45s cubic-bezier(0.16, 1, 0.3, 1); }

.reveal-item.visible { opacity: 1; transform: translateY(0); }

h1, .h1 { font-family: var(--font-display); font-size: var(--fs-h1); font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; }

h2, .h2 { font-family: var(--font-display); font-size: var(--fs-h2); font-weight: 700; line-height: 1.15; letter-spacing: -0.015em; }

h3, .h3 { font-family: var(--font-display); font-size: var(--fs-h3); font-weight: 600; line-height: 1.35; letter-spacing: -0.005em; }

.lead { font-size: var(--fs-lead); line-height: 1.65; color: var(--muted); max-width: 56ch; }

.eyebrow { font-family: var(--font-mono); font-size: 12px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin: 0 0 var(--gap-md); }

.meta { font-family: var(--font-mono); font-size: var(--fs-meta); color: var(--muted); }

.topnav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: 64px; background: transparent; border-bottom: 1px solid transparent; transition: background 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s, backdrop-filter 0.4s; }

.topnav nav a { font-size: 16px; font-weight: 500; color: rgba(255,255,255,0.55); transition: color 0.25s; position: relative; letter-spacing: 0.01em; }

.topnav nav a.active { color: #ffffff; }

.topnav.scrolled nav a.active { color: #1a1a1a; }

.topnav nav a.active::after { transform: scaleX(1); }

.topnav .nav-cta { font-size: 15px; font-weight: 600; color: #ffffff; padding: 10px 28px; border: 1px solid rgba(255,255,255,0.3); border-radius: var(--radius); transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1); letter-spacing: 0.02em; }

.topnav .nav-cta:active { transform: scale(0.96); transition-duration: 0.1s; }

.page-hero { position: relative; padding-top: 160px; padding-bottom: 80px; background: #000000; color: #ffffff; overflow: hidden; }

.page-hero::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(24,144,255,0.06) 0%, transparent 70%); pointer-events: none; }

.page-hero .container { position: relative; z-index: 1; }

.page-hero h1 { font-size: var(--fs-h1); font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; color: #ffffff; margin-bottom: var(--gap-sm); }

.page-hero .lead { font-size: var(--fs-lead); color: rgba(255,255,255,0.7); max-width: 640px; margin-top: var(--gap-md); line-height: 1.7; }

.page-hero .eyebrow { color: var(--accent); }

.platform-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap-md); }

.platform-card { background: var(--surface-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s, box-shadow 0.3s; display: flex; flex-direction: column; box-shadow: 0 1px 3px rgba(0,0,0,0.04); }

.platform-card:hover { transform: translateY(-4px); border-color: rgba(0,0,0,0.15); box-shadow: 0 4px 12px rgba(0,0,0,0.06); }

.platform-icon { width: 48px; height: 48px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; flex-shrink: 0; }

.platform-icon svg { width: 24px; height: 24px; stroke: var(--fg); fill: none; stroke-width: 1.6; }

.platform-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; line-height: 1.3; }

.platform-card p { font-size: 14px; color: var(--muted); line-height: 1.6; flex: 1; }

.platform-card .platform-tag { display: inline-block; font-family: var(--font-mono); font-size: 11px; color: var(--muted); letter-spacing: 0.06em; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }

.timeline { position: relative; padding-left: 48px; }

.timeline::before { content: ''; position: absolute; left: 15px; top: 8px; bottom: 8px; width: 2px; background: var(--border); }

.timeline-step { position: relative; padding-bottom: 48px; }

.timeline-step:last-child { padding-bottom: 0; }

.timeline-dot { position: absolute; left: -48px; top: 2px; width: 32px; height: 32px; border-radius: 50%; background: var(--accent); display: flex; align-items: center; justify-content: center; color: #ffffff; font-family: var(--font-mono); font-size: 13px; font-weight: 600; z-index: 1; }

.timeline-step h3 { font-size: 20px; font-weight: 600; margin-bottom: 8px; }

.timeline-step p { font-size: 15px; color: var(--muted); line-height: 1.7; max-width: 560px; }

.timeline-tag { display: inline-block; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; color: var(--accent); margin-bottom: 6px; }

.stats-row { display: flex; gap: var(--gap-xl); flex-wrap: wrap; }

.stat-item { flex: 1; min-width: 140px; }

.stat-number { font-family: var(--font-display); font-size: 48px; font-weight: 700; line-height: 1; margin-bottom: 8px; letter-spacing: -0.02em; }

.stat-label { font-size: 14px; color: var(--muted); }

.cta-section { text-align: center; padding-block: var(--gap-xl); }

.cta-section h2 { margin-bottom: var(--gap-sm); }

.cta-section .lead { margin: 0 auto var(--gap-lg); }

.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px; border-radius: var(--radius); border: 1px solid transparent; font-size: 16px; font-weight: 600; letter-spacing: 0.02em; transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1); }

.btn:active { transform: scale(0.97); transition-duration: 0.1s; }

.btn-primary { background: var(--fg); color: var(--bg); border-color: var(--fg); }

.btn-primary:hover { background: transparent; color: var(--fg); border-color: var(--fg); }

.btn-primary:active { background: rgba(0,0,0,0.85); }

.btn-secondary { background: transparent; color: var(--fg); border-color: rgba(0,0,0,0.15); }

.btn-secondary:hover { border-color: rgba(0,0,0,0.4); background: rgba(0,0,0,0.04); }

.btn-secondary:active { background: rgba(0,0,0,0.06); border-color: rgba(0,0,0,0.3); }

.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.pagefoot { padding-block: var(--gap-xl); border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; background: var(--surface); }

.footer-inner { display: grid; grid-template-columns: 1.5fr auto auto auto; gap: var(--gap-xl); align-items: start; }

.footer-brand { font-family: var(--font-display); font-size: 18px; font-weight: 700; color: var(--fg); margin-bottom: 10px; }

.footer-col h4 { font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(0,0,0,0.45); margin-bottom: 16px; }

.footer-bottom { margin-top: var(--gap-xl); padding-top: var(--gap-lg); border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: rgba(0,0,0,0.4); }

.footer-desc { max-width: 32ch; font-size: 13px; color: var(--muted); }

:focus { outline: none; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.btn:focus-visible { outline-offset: 4px; }

.topnav nav a:focus-visible { outline-offset: 6px; }

.nav-dropdown { position: relative; }

.nav-dropdown > a { display: inline-flex; align-items: center; gap: 4px; }

.nav-dropdown > a::before { content: ''; display: none; }

.nav-dropdown .dropdown-arrow { width: 8px; height: 8px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg) translateY(-2px); transition: transform 0.25s; flex-shrink: 0; opacity: 0.6; }

.dropdown-menu { position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(4px); min-width: 180px; background: rgba(10,10,10,0.95); backdrop-filter: blur(20px) saturate(180%); -webkit-backdrop-filter: blur(20px) saturate(180%); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius); padding: 8px 0; opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s, background 0.3s, border-color 0.3s; box-shadow: 0 8px 24px rgba(0,0,0,0.3); z-index: 120; }

.topnav.scrolled .dropdown-menu { background: rgba(255,255,255,0.98); border-color: var(--border); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }

.nav-dropdown:hover .dropdown-menu, .nav-dropdown:focus-within .dropdown-menu { opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0); }

.nav-dropdown:hover .dropdown-arrow { transform: rotate(-135deg) translateY(-2px); }

.dropdown-menu a { display: block; padding: 10px 20px; font-size: 14px; font-weight: 500; color: rgba(255,255,255,0.7); white-space: nowrap; transition: background 0.15s, color 0.15s; }

.dropdown-menu a:hover { background: rgba(255,255,255,0.08); color: #ffffff; }

.topnav.scrolled .dropdown-menu a:hover { background: var(--surface); color: var(--fg); }

.dropdown-menu a::after { display: none !important; }

.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 40px; height: 40px; padding: 8px; border-radius: var(--radius); cursor: pointer; z-index: 110; }

.nav-toggle span { display: block; width: 100%; height: 2px; background: #ffffff; border-radius: 1px; transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s; transform-origin: center; }

.topnav.scrolled .nav-toggle span { background: var(--fg); }

.mobile-nav { display: none; }

@media (max-width: 1024px) { :root { --gutter: 32px; } }

@media (max-width: 920px) {
      .nav-toggle { display: flex; }
      .topnav nav { display: none; }
      .topnav > .container > .nav-cta { display: none; }
      .nav-toggle.active span { background: #ffffff !important; }
      .mobile-nav { display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: rgba(255, 255, 255, 0.98); backdrop-filter: blur(20px) saturate(180%); -webkit-backdrop-filter: blur(20px) saturate(180%); border-bottom: 1px solid var(--border); padding: 16px var(--gutter) 24px; gap: 8px; opacity: 0; transform: translateY(-8px); pointer-events: none; transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1); }
      .mobile-nav.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
      .mobile-nav nav { display: flex; flex-direction: column; gap: 0; }
      .mobile-nav nav a { font-size: 16px; font-weight: 500; color: rgba(0, 0, 0, 0.75); padding: 14px 0; border-bottom: 1px solid var(--border); transition: color 0.2s; }
      .mobile-nav nav a:last-child { border-bottom: none; }
      .mobile-nav nav a:hover { color: #1a1a1a; }
      .mobile-nav nav a.active { color: #1a1a1a; }
      .mobile-nav .nav-cta { margin-top: 12px; text-align: center; font-size: 15px; font-weight: 600; color: #1a1a1a; padding: 12px 28px; border: 1px solid rgba(0, 0, 0, 0.25); border-radius: var(--radius); transition: all 0.25s; }
      .mobile-nav .nav-cta:hover { background: #1a1a1a; color: #ffffff; border-color: #1a1a1a; }
      .platform-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--gap-lg); }
      .footer-bottom { flex-direction: column; gap: var(--gap-sm); text-align: center; }
      :root { --gutter: 24px; }
      .dropdown-menu { position: static; transform: none; min-width: 0; background: transparent; backdrop-filter: none; -webkit-backdrop-filter: none; border: none; border-radius: 0; padding: 0 0 0 16px; box-shadow: none; max-height: 0; overflow: hidden; opacity: 1; pointer-events: auto; transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1); }
      .nav-dropdown.open .dropdown-menu, .nav-dropdown:hover .dropdown-menu, .nav-dropdown:focus-within .dropdown-menu { max-height: 600px; overflow-y: auto; transform: none; }
      .dropdown-menu a { padding: 10px 0; font-size: 14px; border-bottom: 1px solid var(--border); }
      .dropdown-menu a:last-child { border-bottom: none; }
    }

@media (max-width: 640px) {
      .platform-grid { grid-template-columns: 1fr; }
      .footer-inner { grid-template-columns: 1fr; }
      .page-hero { padding-top: 120px; padding-bottom: 56px; }
      .cta-buttons { flex-direction: column; align-items: center; }
      .cta-buttons .btn { width: 100%; max-width: 320px; justify-content: center; }
      .stats-row { gap: var(--gap-lg); }
      .stat-number { font-size: 36px; }
    }

@media (prefers-reduced-motion: reduce) {
      .reveal, .reveal-item { opacity: 1 !important; transform: none !important; transition: none !important; }
      .platform-card { transition: none !important; }
    }

/* ===================== 挂载定制页 cp- 组件 ===================== */

/* 通用挂载产品墙 */
.cp-products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; align-items: start; }

.cp-product { position: relative; margin: 0; background: #ffffff; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s, border-color 0.35s; }

.cp-product img { display: block; width: 100%; height: auto; transition: transform 0.4s ease; }

.cp-product figcaption { padding: 10px 12px 12px; text-align: center; font-size: 14px; font-weight: 600; color: #0d1b2a; letter-spacing: 0.1em; border-top: 1px solid var(--border); background: #f7f9fc; }

.cp-product:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1); border-color: var(--accent); }
.cp-product:hover img { transform: scale(1.05); }

/* 载重适配区间 */
.cp-load-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap-md); margin-bottom: var(--gap-lg); }

.cp-load { background: var(--surface-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px 24px; text-align: center; }

.cp-load-value { font-family: var(--font-display); font-size: clamp(28px, 3vw, 38px); font-weight: 700; color: var(--accent); line-height: 1.1; letter-spacing: -0.01em; }

.cp-load-value span { font-size: 0.5em; font-weight: 600; margin-left: 4px; color: var(--muted); }

.cp-load-name { font-size: 16px; font-weight: 600; color: var(--fg); margin: 10px 0 6px; }

.cp-load p { margin: 0; font-size: 14px; color: var(--muted); }

/* 小节副标题 */
.cp-subtitle { font-size: 22px; font-weight: 600; margin: 0 0 var(--gap-md); padding-left: 14px; border-left: 4px solid var(--accent); }

/* 通用卡片网格 */
.cp-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap-md); }

.cp-card { background: var(--surface-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 26px 24px; transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s, border-color 0.35s; }

.cp-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08); border-color: var(--accent); }

.cp-card h3 { margin: 0 0 10px; font-size: 18px; }

.cp-card p { margin: 0; font-size: 14.5px; color: var(--muted); line-height: 1.7; }

/* 编号卡片 */
.cp-num-card { position: relative; padding-top: 32px; }

.cp-num { font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--accent); letter-spacing: 0.08em; display: inline-block; margin-bottom: 8px; padding: 2px 10px; border: 1px solid color-mix(in oklch, var(--accent) 35%, transparent); border-radius: 999px; background: var(--accent-soft); }

/* 列表 */
.cp-list { margin: 0; padding-left: 18px; }

.cp-list li { font-size: 14.5px; color: var(--muted); line-height: 1.8; }

.cp-list li::marker { color: var(--accent); }

/* 行业品类 */
.cp-cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap-md); }

.cp-cat { background: var(--surface-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px 26px; transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s, border-color 0.35s; }

.cp-cat:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08); border-color: var(--accent); }

.cp-cat h3 { margin: 0 0 14px; font-size: 18px; padding-bottom: 12px; border-bottom: 1px dashed var(--border); color: var(--fg); }

/* 服务流程 */
.cp-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--gap-md); counter-reset: step; }

.cp-step { background: var(--surface-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 22px 20px; display: flex; align-items: flex-start; gap: 14px; transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s, border-color 0.35s; }

.cp-step:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08); border-color: var(--accent); }

.cp-step-num { flex: none; width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #ffffff; font-family: var(--font-mono); font-weight: 700; font-size: 15px; display: flex; align-items: center; justify-content: center; }

.cp-step p { margin: 0; font-size: 14.5px; color: var(--muted); line-height: 1.7; }

/* 核心优势 */
.cp-adv-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--gap-md); }

.cp-adv { background: var(--surface-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 26px 20px; text-align: center; transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s, border-color 0.35s; }

.cp-adv:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08); border-color: var(--accent); }

.cp-adv-icon { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; margin-bottom: 14px; border-radius: 14px; font-size: 24px; color: var(--accent); background: var(--accent-soft); }

.cp-adv h3 { margin: 0 0 8px; font-size: 16px; }

.cp-adv p { margin: 0; font-size: 13.5px; color: var(--muted); line-height: 1.65; }

/* ===== 软件定制页（cs- 前缀）===== */
.cs-layer-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--gap-md); }

.cs-case { margin: 0; background: #ffffff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 12px; box-shadow: 0 10px 34px rgba(13, 27, 42, 0.08); }

.cs-case img { display: block; width: 100%; height: auto; border-radius: 10px; }

.cs-deli-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: var(--gap-md); }

.cs-deli { display: flex; align-items: center; gap: 16px; background: var(--surface-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px 24px; font-size: 15.5px; font-weight: 600; color: var(--fg); transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s, border-color 0.35s; }

.cs-deli span { flex: none; font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--accent); width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--accent-soft); border: 1px solid color-mix(in oklch, var(--accent) 35%, transparent); }

.cs-deli:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08); border-color: var(--accent); }

/* ===================== 机场定制页 ca- ===================== */
/* 案例卡：左图右文 */
.ca-case { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: var(--gap-lg); align-items: center; background: var(--surface-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--gap-md); margin-bottom: var(--gap-md); transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s, border-color 0.35s; }

.ca-case:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08); border-color: var(--accent); }

.ca-case-reverse .ca-case-figure { order: 2; }

.ca-case-solo { grid-template-columns: 1fr; }

.ca-case-figure { background: #ffffff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }

.ca-case-figure img { display: block; width: 100%; height: auto; }

.ca-case-body h3 { margin: 0 0 var(--gap-sm); font-size: 20px; line-height: 1.4; }

.ca-case-label { display: inline-block; font-family: var(--font-mono); font-size: 11px; font-weight: 600; letter-spacing: 0.08em; color: var(--accent); background: var(--accent-soft); border-radius: 999px; padding: 3px 12px; margin: 12px 0 6px; }

.ca-case-body > p { margin: 0; font-size: 14.5px; color: var(--muted); line-height: 1.75; }

/* 优势四列 */
.ca-adv-grid { grid-template-columns: repeat(4, 1fr); }

/* 响应式 */
@media (max-width: 1024px) {
      .cp-products { grid-template-columns: repeat(3, 1fr); }
      .cp-adv-grid { grid-template-columns: repeat(3, 1fr); }
      .cp-grid-3, .cp-cat-grid { grid-template-columns: repeat(2, 1fr); }
      .cp-load-grid { grid-template-columns: repeat(3, 1fr); gap: var(--gap-sm); }
      .cs-layer-grid { grid-template-columns: repeat(2, 1fr); }
      .ca-adv-grid { grid-template-columns: repeat(2, 1fr); }
    }

@media (max-width: 640px) {
      .cp-products { grid-template-columns: repeat(2, 1fr); gap: 10px; }
      .cp-product { border-radius: 10px; }
      .cp-product figcaption { font-size: 12px; letter-spacing: 0.05em; padding: 8px 6px 9px; }
      .cp-load-grid { grid-template-columns: 1fr; }
      .cp-grid-3, .cp-cat-grid, .cp-adv-grid { grid-template-columns: 1fr; }
      .cp-steps { grid-template-columns: 1fr; }
      .cp-card, .cp-cat, .cp-adv, .cp-load { padding: 20px 18px; }
      .cs-layer-grid { grid-template-columns: 1fr; }
      .cs-case { padding: 8px; border-radius: 12px; }
      .cs-case img { border-radius: 8px; }
      .cs-deli { padding: 16px 18px; font-size: 14.5px; }
      .ca-case { grid-template-columns: 1fr; gap: var(--gap-sm); padding: 18px 16px; }
      .ca-case-reverse .ca-case-figure { order: 0; }
      .ca-case-body h3 { font-size: 17px; }
      .ca-adv-grid { grid-template-columns: 1fr; }
    }

/* ===================== 系统定制页 cs2- 组件（PPT 版式） ===================== */
.cs2-screens { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap-md); }

.cs2-screen { margin: 0; background: #ffffff; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s, border-color 0.35s; }

.cs2-screen:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08); border-color: var(--accent); }

.cs2-screen-media { aspect-ratio: 16 / 10; display: flex; align-items: center; justify-content: center; padding: 14px; border-bottom: 1px solid var(--border); background: linear-gradient(180deg, #f7f9fc 0%, #ffffff 100%); }

.cs2-screen-media img { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; }

.cs2-screen figcaption { padding: 12px 16px 13px; text-align: center; font-size: 14px; font-weight: 600; color: #0d1b2a; letter-spacing: 0.05em; }

.cs2-adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap-md); }

@media (max-width: 1024px) {
      .cs2-screens { grid-template-columns: repeat(2, 1fr); }
      .cs2-adv-grid { grid-template-columns: repeat(2, 1fr); }
    }

@media (max-width: 640px) {
      .cs2-screens { grid-template-columns: 1fr; }
      .cs2-adv-grid { grid-template-columns: 1fr; }
    }