/* Mobile layouts use the same local content and brand artwork as desktop. */
@media (max-width: 420px) {
  .cockpit-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cockpit-metrics .metric-card:first-child { grid-column: 1 / -1; }
  .cockpit-metrics .metric-card strong { white-space: nowrap; }
}

@media (max-width: 960px) {
  .stack-panel { min-width: 0; }
  .contact-qr-wrap { color: #356574; }
  .cases-head { margin-bottom: 0; }
}

@media (max-width: 760px) {
  .reveal, .reveal.in { opacity: 1; transform: none; transition: none; }
  .hero-content { opacity: 1 !important; transform: none !important; }
  .cap-card:hover, .cap-card:focus-visible { transform: none; }
  html { scroll-padding-top: 88px; overflow-x: clip; }
  .section { padding: 56px 22px; }
  .section-intro { margin-bottom: 28px; }
  .section-intro .eyebrow { font-size: 10px; margin-bottom: 15px; letter-spacing: .05em; }
  .section-intro h2, .numbers h2 { font-size: clamp(32px, 6.5vw, 38px); line-height: 1.3; letter-spacing: -.04em; }
  .section-intro h2 span, .numbers h2 span { letter-spacing: -.07em; }
  .about { gap: 24px; }
  .about-copy { max-width: none; padding: 0; }
  .about-copy .lead { font-size: 19px; line-height: 1.7; }
  .about-copy p { font-size: 15px; line-height: 1.85; margin-bottom: 17px; }
  .arrow-link, .text-link { min-height: 44px; display: inline-flex; align-items: center; font-size: 14px; }
  .site-header .header-cta { min-height: 44px; }
  .menu-toggle { min-width: 44px; min-height: 44px; }
  .main-nav a { min-height: 48px; font-size: 15px; }
  .button { min-height: 46px; }

  .capabilities .section-intro { margin-bottom: 28px; }
  .cap-grid { grid-template-columns: 1fr; gap: 12px; }
  .cap-card, .cap-card:last-child { min-height: 0; grid-column: auto; padding: 21px; border-radius: 14px; box-shadow: 0 5px 18px #155d6a08; }
  .cap-card .cap-index, .cap-card .cap-meta { display: none; }
  .cap-card h3 { margin: 0 0 10px; font-size: 21px; line-height: 1.45; letter-spacing: -.02em; }
  .cap-card p { font-size: 14px; line-height: 1.8; margin: 0; color: #4f747f; }
  .cap-card a { font-size: 13px; margin-top: 13px; padding-top: 0; min-height: 38px; display: flex; align-items: center; justify-content: space-between; color: #167e95; }
  .cap-card a span { font-size: 18px; }
  .cap-card:active { border-color: #87bac4; background: #f4fcfc; }
  .cap-card::after { left: 22px; right: 22px; }

  .ai-stack .section-intro { margin-bottom: 27px; gap: 0; }
  .stack-rail { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px; padding: 5px; margin: 0 0 16px; overflow: visible; }
  .stack-step { width: auto; min-height: 46px; padding: 10px 11px; font-size: 12px; gap: 7px; justify-content: flex-start; }
  .stack-step:last-child { grid-column: 1 / -1; justify-content: center; }
  .stack-step b { font-size: 10px; }
  .stack-step span { white-space: normal; }
  .stack-panel { display: grid; grid-template-columns: minmax(0, 1fr); padding: 20px; gap: 20px; min-height: 0; border-radius: 14px; }
  .stack-panel-top { font-size: 10px; gap: 8px; flex-wrap: wrap; align-items: center; }
  #stack-kicker { display: none; }
  .studio-demo-badge { font-size: 11px; }
  .stack-copy { display: block; padding: 0; }
  .stack-panel h3 { font-size: 26px; line-height: 1.5; letter-spacing: -.035em; margin: 0 0 12px; text-wrap: pretty; }
  .stack-panel .stack-copy > p { font-size: 14px; line-height: 1.8; margin: 0; }
  .stack-tags { display: none; }
  .stack-visual { width: calc(100% + 20px); margin-left: -10px; min-width: 0; }
  .brain-ui, .cockpit-ui, .growth-ui, .sales-ui, .digital-ui { padding: 14px; min-height: 0; border-radius: 10px; }
  .brain-top, .cockpit-top, .growth-top, .sales-top, .digital-top { min-height: 23px; gap: 8px; }
  .brain-brand, .agent-brand { font-size: 0; gap: 6px; }
  .brain-brand::after, .agent-brand::after { font: 500 12px/1.5 var(--sans); letter-spacing: .01em; color: #e9faf7; }
  .brain-ui .brain-brand::after { content: "企业知识大脑"; }
  .cockpit-ui .brain-brand::after { content: "经营驾驶舱"; }
  .growth-ui .agent-brand::after { content: "营销增长智能体"; }
  .sales-ui .agent-brand::after { content: "销售服务智能体"; }
  .digital-ui .agent-brand::after { content: "数字员工工作流"; }
  .live-pill, .agent-live { font-size: 9px; padding: 3px 5px; letter-spacing: 0; }
  .brain-command, .agent-command { margin: 14px 0 12px; min-height: 38px; font-size: 11px; }
  .brain-command > b, .agent-command > b { display: none; }
  .brain-main { display: block; }
  .brain-network { min-height: 220px; }
  .brain-core { width: 78px; height: 78px; }
  .brain-core strong { font-size: 23px; }
  .brain-core small, .brain-core em { font-size: 10px; }
  .brain-node { width: 42px; height: 36px; font-size: 11px; line-height: 1.35; }
  .brain-index { margin-top: 12px; padding: 14px 12px; display: grid; grid-template-columns: 1fr; gap: 14px; }
  .index-head { grid-column: auto; font-size: 12px; }
  .index-head b { font-size: 21px; }
  .index-row, .index-row > b { font-size: 11px; }
  .index-row:last-of-type { grid-column: auto; }
  .cockpit-metrics { gap: 6px; margin: 14px 0 12px; }
  .metric-card { padding: 12px 8px; }
  .metric-card small { font-size: 10px; }
  .metric-card strong { font-size: 24px; line-height: 1.2; margin: 9px 0 6px; }
  .metric-card strong em { font-size: 10px; }
  .metric-card > b { font-size: 10px; }
  .cockpit-grid { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .cockpit-chart-card, .cockpit-ring-card, .cockpit-feed { padding: 14px; }
  .cockpit-chart { height: 116px; }
  .chart-head { font-size: 12px; gap: 10px; }
  .chart-head b, .chart-axis { font-size: 10px; }
  .cockpit-ring-card { display: flex; flex-direction: row; align-items: center; justify-content: center; gap: 22px; }
  .ring-progress { width: 90px; height: 90px; margin: 0; flex-shrink: 0; }
  .ring-progress strong { font-size: 24px; }
  .ring-progress small { font-size: 10px; }
  .ring-key { font-size: 11px; display: flex; flex-direction: column; gap: 9px; margin: 0; }
  .cockpit-feed { grid-column: auto; }
  .cockpit-feed p, .cockpit-feed p b { font-size: 11px; line-height: 1.6; }
  .growth-main, .sales-main { grid-template-columns: 1fr; gap: 12px; }
  .funnel-card, .channel-card, .journey-card, .customer-card { display: block; padding: 14px 12px; min-height: 0; }
  .agent-head { font-size: 12px; }
  .agent-head b { font-size: 10px; }
  .funnel { gap: 16px; margin-top: 20px; }
  .funnel-row, .funnel-row b { font-size: 12px; }
  .funnel-row b em { font-size: 10px; }
  .funnel-foot { font-size: 10px; margin-top: 17px; }
  .channel-row, .channel-row strong { font-size: 12px; }
  .channel-row { margin-top: 15px; }
  .channel-spark { font-size: 10px; }
  .channel-spark svg { height: 32px; }
  .journey-line { margin-top: 22px; gap: 3px; }
  .journey-step, .journey-step b { font-size: 11px; }
  .journey-step i { width: 30px; height: 30px; font-size: 10px; }
  .journey-track { top: 15px; }
  .journey-note { font-size: 10px; margin-top: 19px; }
  .customer-head { flex-wrap: nowrap; gap: 8px; }
  .customer-head strong { font-size: 13px; }
  .customer-head small { font-size: 10px; line-height: 1.7; }
  .customer-head > b { font-size: 24px; }
  .customer-tags { gap: 5px; }
  .customer-tags span { font-size: 10px; }
  .customer-next > span { font-size: 11px; }
  .customer-next p { font-size: 12px; line-height: 1.8; }
  .customer-next button { min-height: 44px; font-size: 12px; }
  .flow-canvas { grid-template-columns: minmax(0, 1fr) 12px minmax(0, 1fr); min-height: 260px; gap: 18px 8px; padding: 16px 10px 38px; }
  .flow-node.trigger { grid-column: 1 !important; grid-row: 1 !important; }
  .flow-node.ai { grid-column: 3 !important; grid-row: 1 !important; }
  .flow-node.action { grid-column: 1 !important; grid-row: 2 !important; }
  .flow-node.review { grid-column: 3 !important; grid-row: 2 !important; }
  .flow-connector.c1 { grid-column: 2 !important; grid-row: 1 !important; }
  .flow-connector.c3 { grid-column: 2 !important; grid-row: 2 !important; }
  .flow-connector.c2 { display: none; }
  .flow-node { min-height: 84px; padding: 10px 8px; }
  .flow-node strong { font-size: 12px; line-height: 1.5; }
  .flow-node small { display: none; }
  .flow-node em { font-size: 10px; line-height: 1.6; margin-top: 6px; }
  .flow-branch { font-size: 10px; }

  .studio-examples { margin-top: 14px; padding: 0; border: 1px solid #d0e5e7; border-radius: 12px; background: #fff9; box-shadow: none; }
  .studio-examples > summary { min-height: 54px; padding: 15px 19px; font-size: 14px; color: #296879; list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
  .studio-examples > summary::-webkit-details-marker { display: none; }
  .studio-examples > summary::after { content: "+"; font: 20px/1 var(--sans); color: #488596; }
  .studio-examples[open] > summary::after { content: "−"; }
  .studio-examples .studio-lab { margin: 0; padding: 0; border: 0; background: transparent; box-shadow: none; border-radius: 0; display: block; }
  .studio-examples[open] .studio-lab { padding: 0 19px 19px; }
  .studio-examples .lab-scenarios { gap: 7px; margin: 0 0 17px; }
  .studio-examples .lab-scenarios button { font-size: 12px; min-height: 42px; padding: 8px 12px; }
  .studio-examples .lab-question { font-size: 16px; line-height: 1.75; margin-bottom: 17px; }
  .studio-examples .lab-output { padding: 17px 0 0; min-height: 0; border-left: 0; border-top: 1px solid #dfeced; }
  .studio-examples .lab-result-title { font-size: 12px; line-height: 1.65; }
  .studio-examples .lab-result p { font-size: 13px; line-height: 1.9; }
  .studio-examples .lab-result-title small { display: none; }
  .studio-examples .lab-plan { grid-template-columns: 1fr; }
  .studio-examples .lab-plan article { padding: 13px; }
  .studio-examples .lab-plan strong { font-size: 13px; }
  .studio-examples .lab-plan p { font-size: 12px; }
  .studio-examples .lab-citations span, .studio-examples .lab-action, .studio-examples .lab-checklist span { font-size: 11px; line-height: 1.7; }

  .cases-head { margin-bottom: 0; }
  .cases-head .case-controls { display: flex; margin-top: 22px; gap: 4px; padding: 4px; border-radius: 11px; overflow: auto; max-width: 100%; }
  .filter { font-size: 12px; min-height: 44px; padding: 8px 12px; flex-shrink: 0; }
  .cases .case-grid { margin-top: 23px; gap: 14px; padding-top: 2px; align-items: flex-start; }
  .cases .case-card, .cases .case-card.case-wide, .cases .case-card.case-large { width: 232px; flex-basis: 232px; max-width: 78vw; height: 356px; }
  .cases .case-card.case-landscape { width: calc(100% - 44px); flex-basis: calc(100% - 44px); max-width: 440px; height: auto; }
  .cases .case-card.case-landscape img { height: auto; aspect-ratio: 16 / 9; flex: none; }
  .cases .case-card img { padding: 8px; height: calc(100% - 74px); }
  .cases .case-overlay { height: 74px; min-height: 74px; padding: 12px 14px; }
  .cases .case-overlay span { font-size: 9px; }
  .cases .case-overlay h3 { font-size: 16px; line-height: 1.5; }
  .gallery-toolbar { padding-top: 0; gap: 16px; }
  .gallery-counter { font-size: 12px; }
  .gallery-buttons button { width: 44px; height: 44px; }
  .case-scroll-hint { display: none; }
  .number-grid { max-width: none; display: block; border: 0; background: none; }
  .number-item { min-height: 0; display: flex; flex-direction: row; align-items: center; justify-content: space-between; gap: 18px; padding: 23px 0; border: 0; border-bottom: 1px solid #c7e2e4; }
  .number-item strong { font-size: clamp(29px, 8vw, 36px); white-space: nowrap; }
  .number-item span { font: 12px/1.7 var(--sans); margin: 0; text-align: right; flex-shrink: 0; }
  .numbers { gap: 27px; }
  .numbers-copy > p:not(.eyebrow) { font-size: 14px; line-height: 1.85; margin-top: 20px; }

  .process-line { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0; border: 0; margin-top: 28px; }
  .process-step, .process-step:last-child, .process-step:nth-child(n+3) { grid-column: auto; min-height: 0; padding: 0 0 25px 45px; border: 0; }
  .process-step:last-child { padding-bottom: 0; }
  .process-step::before { left: 12px; top: 7px; bottom: -6px; width: 1px; height: auto; border-radius: 0; background: #c6e0e4; box-shadow: none; }
  .process-step:last-child::before { display: none; }
  .process-step > b { position: absolute; left: 0; top: 0; width: 26px; height: 26px; display: grid; place-items: center; font-size: 10px; border: 1px solid #c3dfe4; border-radius: 50%; background: white; z-index: 1; }
  .process-step h3 { font-size: 18px; line-height: 1.45; margin: 0 0 7px; }
  .process-step p { font-size: 14px; line-height: 1.8; margin: 0; }

  .contact-card { border-radius: 0; box-shadow: none; min-height: 0; overflow: visible; }
  .contact-top { display: grid; grid-template-columns: minmax(0, 1fr); gap: 25px; }
  .contact h2, .contact-top h2 { font-size: clamp(28px, 5.5vw, 36px); line-height: 1.4; letter-spacing: -.045em; }
  .contact-qr-wrap { display: flex; align-items: center; justify-self: start; gap: 10px; margin: 0; padding: 17px 19px; color: #2e6575; background: #fff; border: 0; border-radius: 12px; font: 12px/1.6 var(--sans); }
  .contact-qr-wrap .contact-qr { width: 134px; height: 134px; padding: 0; }
  .contact-map { grid-column: auto; margin: 0; width: 100%; max-width: none; padding: 12px; }
  .contact-map-head { font-size: 11px; letter-spacing: 0; padding: 0 0 12px; }
  .contact-map-link { font-size: 12px; min-height: 46px; padding: 13px 2px 0; }
  .map-label b { font-size: 15px; }
  .map-label small { font-size: 11px; line-height: 1.8; }
  .contact-bottom { display: block; margin-top: 27px; padding-top: 23px; }
  .contact-info { gap: 13px; }
  .contact-info a { font: 13px/1.9 var(--sans); overflow-wrap: anywhere; }
  .contact-info a[href^="tel:"] { font: 500 29px/1.5 var(--sans); letter-spacing: -.015em; min-height: 48px; display: inline-flex; align-items: center; }
  .contact-info a[href^="tel:"] span { font-size: 20px; margin-left: auto; }
  .contact-services { font-size: 10px; line-height: 1.8; }
  .back-top { width: 40px; height: 40px; right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); background: #f7fcfc; }
  .site-footer { padding: 29px 24px 74px; }
  .site-footer p { font: 12px/1.8 var(--sans); letter-spacing: 0; margin: 16px 0; }
  .footer-links { gap: 5px 20px; font-size: 12px; }
  .footer-links a { min-height: 42px; display: inline-flex; align-items: center; }
  .footer-links > span { width: 100%; font-size: 10px; margin-top: 9px; }
  .brand-finale { min-height: 580px; }
  .finale-heading { padding-left: 24px; padding-right: 24px; }
  .finale-index { font-size: 9px; letter-spacing: 0; }
  .finale-toolbar { left: 24px; right: 24px; bottom: 23px; display: flex; justify-content: space-between; gap: 10px; }
  .finale-modes { padding: 4px; gap: 3px; }
  .finale-modes button { min-width: 76px; min-height: 44px; padding: 8px 11px; font-size: 12px; }
  .finale-modes button > span { display: none; }
  .finale-pause { font-size: 11px; min-height: 44px; padding: 8px 0; gap: 7px; white-space: nowrap; }
  .case-modal { padding: 14px; }
  .modal-content { max-height: 88dvh; border-radius: 13px; }
  .modal-text { padding: 23px; }
  .modal-text h3 { font-size: 29px; line-height: 1.35; }
  .modal-text p { font-size: 14px; line-height: 1.8; }
}

@media (max-width: 560px) {
  .hero { height: 78svh; min-height: 580px; max-height: 740px; padding: 100px 22px 136px; align-items: center; }
  .hero-content { max-width: 100%; width: 100%; }
  .hero h1 { font-size: clamp(48px, 12vw, 54px); line-height: 1.18; letter-spacing: -.065em; }
  .hero h1 em { display: inline-block; font-size: clamp(31px, 8.8vw, 37px); letter-spacing: -.075em; white-space: nowrap; margin-top: 8px; }
  .hero-actions { gap: 22px; margin-top: 27px; }
  .hero-actions .button { padding: 12px 18px; font-size: 13px; }
  .hero-actions .text-link { font-size: 13px; }
  .site-header { padding: 0 16px; gap: 5px; }
  .header-cta { font-size: 11px; margin-right: 4px; padding: 10px 12px; }
}

@media (max-width: 350px) {
  .section { padding-left: 18px; padding-right: 18px; }
  .hero { padding-left: 18px; padding-right: 18px; }
  .hero h1 em { font-size: 29px; }
  .section-intro h2, .numbers h2 { font-size: 31px; }
  .stack-panel { padding: 17px; }
  .stack-panel h3 { font-size: 24px; }
  .stack-step { font-size: 11px; padding-left: 8px; padding-right: 8px; }
  .brain-ui, .cockpit-ui, .growth-ui, .sales-ui, .digital-ui { padding: 11px; }
  .metric-card { padding-left: 6px; padding-right: 6px; }
  .metric-card strong { font-size: 21px; }
  .metric-card small, .metric-card > b { font-size: 10px; }
  .brain-brand::after, .agent-brand::after { font-size: 11px; }
  .flow-canvas { padding-left: 8px; padding-right: 8px; column-gap: 6px; }
  .flow-node { padding: 9px 6px; }
  .flow-node strong { font-size: 11px; }
  .number-item { padding: 20px 0; }
  .number-item strong { font-size: 28px; }
  .finale-heading { padding-left: 18px; padding-right: 18px; }
  .finale-toolbar { left: 18px; right: 18px; gap: 8px; }
  .finale-modes button { min-width: 66px; padding: 8px; }
  .contact h2, .contact-top h2 { font-size: 27px; }
  .contact-info a[href^="tel:"] { font-size: 27px; }
}