/* ============================================================
   川瑞官网 - 全局样式表
   科技蓝 · 智慧芯
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&family=Orbitron:wght@400;700;900&display=swap');

:root {
  --blue:       #0066CC;
  --sky:        #00A3E0;
  --green:      #00C897;
  --bg:         #F5F7FA;
  --bg-dark:    #0D1B2A;
  --text:       #1A1A2E;
  --text-sub:   #666666;
  --white:      #FFFFFF;
  --shadow:     0 4px 24px rgba(0,102,204,0.10);
  --shadow-lg:  0 8px 48px rgba(0,102,204,0.16);
  --radius:     12px;
  --radius-lg:  20px;
  --transition: 0.35s cubic-bezier(0.4,0,0.2,1);
  --font-sc:    'Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-en:    'Orbitron','Inter',sans-serif;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-sc);color:var(--text);background:var(--white);line-height:1.75;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
img{max-width:100%;display:block}
button{cursor:pointer;border:none;outline:none;font-family:inherit}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--blue);border-radius:3px}

.container{max-width:1280px;margin:0 auto;padding:0 48px}
.section{padding:100px 0}
.section-dark{background:var(--bg-dark);color:var(--white)}
.section-bg{background:var(--bg)}
.text-center{text-align:center}

/* ---- 导航 ---- */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:0 48px;height:72px;
  display:flex;align-items:center;justify-content:space-between;
  transition:var(--transition);
  background:rgba(13,27,42,0.4);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.navbar.scrolled{background:rgba(255,255,255,0.97);box-shadow:var(--shadow);border-bottom-color:rgba(0,102,204,0.08)}
.navbar .logo{display:flex;align-items:center;gap:12px}
.navbar .logo img{height:44px;width:auto;border-radius:6px}
.navbar .logo-text{display:flex;flex-direction:column;line-height:1.2}
.navbar .logo-name{font-weight:700;font-size:15px;color:var(--white);letter-spacing:0.5px}
.navbar .logo-sub{font-size:10px;color:rgba(255,255,255,0.5);letter-spacing:1px}
.navbar.scrolled .logo-name{color:var(--blue)}
.navbar.scrolled .logo-sub{color:var(--text-sub)}

.nav-links{display:flex;align-items:center;gap:2px}
.nav-links>li>a{
  display:flex;align-items:center;gap:4px;
  padding:10px 20px;border-radius:8px;
  color:rgba(255,255,255,0.85);font-size:14px;font-weight:500;
  transition:var(--transition);letter-spacing:0.3px;
}
.navbar.scrolled .nav-links>li>a{color:var(--text)}
.nav-links>li>a:hover{background:rgba(255,255,255,0.08);color:var(--white)}
.navbar.scrolled .nav-links>li>a:hover{background:rgba(0,102,204,0.05);color:var(--blue)}
/* 移除下拉箭头 */
.nav-links .dd-arrow{display:none}

/* 导航高亮：当前页激活状态 */
.nav-links>li>a.nav-active,
.nav-links>li>a.nav-active:hover{
  background:rgba(0,102,204,0.15);
  color:var(--sky);
}
.navbar.scrolled .nav-links>li>a.nav-active,
.navbar.scrolled .nav-links>li>a.nav-active:hover{color:var(--blue)}

.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer}
.hamburger span{width:26px;height:2px;background:var(--white);border-radius:2px;transition:var(--transition)}
.navbar.scrolled .hamburger span{background:var(--blue)}

.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 28px;border-radius:50px;font-weight:600;font-size:14px;transition:var(--transition)}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--sky));color:var(--white);box-shadow:0 4px 20px rgba(0,102,204,0.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,102,204,0.45)}
.btn-outline{background:transparent;color:var(--white);border:1.5px solid rgba(255,255,255,0.5)}
.btn-outline:hover{background:rgba(255,255,255,0.1);border-color:var(--white)}
.btn-outline-blue{background:transparent;color:var(--blue);border:1.5px solid var(--blue)}
.btn-outline-blue:hover{background:var(--blue);color:var(--white)}

.section-tag{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:50px;background:rgba(0,102,204,0.08);color:var(--blue);font-size:12px;font-weight:600;letter-spacing:1px;text-transform:uppercase;margin-bottom:16px}
.section-dark .section-tag{background:rgba(0,163,224,0.15);color:var(--sky)}

.section-title{font-size:42px;font-weight:900;line-height:1.2;margin-bottom:16px;letter-spacing:-0.5px}
.section-sub{font-size:17px;color:var(--text-sub);max-width:900px;line-height:1.8}
.resource-links{max-width:none}
.resource-links a{display:block;white-space:nowrap}
.section-dark .section-sub{color:rgba(255,255,255,0.55)}
.section-head{margin-bottom:64px}
.section-head.center{text-align:center}
.section-head.center .section-sub{margin:0 auto}

.card{background:var(--white);border-radius:var(--radius-lg);padding:36px 32px;box-shadow:var(--shadow);transition:var(--transition);border:1px solid rgba(0,102,204,0.05)}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}

.grad-text{background:linear-gradient(135deg,var(--blue),var(--sky));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

.reveal{opacity:0;transform:translateY(40px);transition:opacity 0.7s ease,transform 0.7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:0.1s}
.reveal-delay-2{transition-delay:0.2s}
.reveal-delay-3{transition-delay:0.3s}
.reveal-delay-4{transition-delay:0.4s}

/* ---- Banner ---- */
.banner{position:relative;min-height:100vh;background:var(--bg-dark);display:flex;align-items:center;overflow:hidden}
.banner-bg{position:absolute;inset:0;background:var(--bg-dark)}
/* 科技感SVG几何背景 */
.banner-geo{
  position:absolute;inset:0;opacity:0.4;
  background-image:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(0,163,224,0.35) 0%, transparent 60%),
    radial-gradient(ellipse 40% 60% at 15% 80%, rgba(0,102,204,0.25) 0%, transparent 55%),
    radial-gradient(ellipse 30% 30% at 50% 50%, rgba(0,200,151,0.08) 0%, transparent 50%);
}
/* 网格线 */
.banner::before{
  content:'';position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(0,102,204,0.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,102,204,0.07) 1px,transparent 1px);
  background-size:70px 70px;
  mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,black 20%,transparent 75%);
}
/* 浮动圆环 */
.banner-rings{position:absolute;right:5%;top:50%;transform:translateY(-50%);width:45%;aspect-ratio:1;z-index:1}
.banner-ring{position:absolute;border-radius:50%;border:1px solid rgba(0,163,224,0.12);top:50%;left:50%;transform:translate(-50%,-50%);animation:ring-pulse 8s ease-in-out infinite}
.banner-ring:nth-child(1){width:100%;height:100%;animation-delay:0s}
.banner-ring:nth-child(2){width:75%;height:75%;border-color:rgba(0,163,224,0.18);animation-delay:1s}
.banner-ring:nth-child(3){width:50%;height:50%;border-color:rgba(0,200,151,0.2);animation-delay:2s}
@keyframes ring-pulse{0%,100%{opacity:0.5;transform:translate(-50%,-50%) scale(1)}50%{opacity:1;transform:translate(-50%,-50%) scale(1.03)}}

.banner-content{position:relative;z-index:2;max-width:780px;padding-top:72px}
.banner-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px 6px 8px;border-radius:50px;background:rgba(0,163,224,0.12);border:1px solid rgba(0,163,224,0.25);color:var(--sky);font-size:12px;font-weight:600;letter-spacing:0.5px;margin-bottom:28px}
.banner-badge-dot{width:8px;height:8px;border-radius:50%;background:var(--sky);animation:pulse-dot 2s infinite}
@keyframes pulse-dot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.4;transform:scale(1.8)}}

.banner h1{font-size:clamp(42px,6vw,74px);font-weight:900;line-height:1.08;color:var(--white);margin-bottom:20px;letter-spacing:-1px}
.banner h1 .hl{color:var(--sky)}
.banner-sub{font-size:18px;color:rgba(255,255,255,0.6);line-height:1.8;margin-bottom:40px;max-width:580px}
.banner-btns{display:flex;gap:16px;flex-wrap:wrap}
.banner-dots{position:absolute;bottom:40px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.banner-dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,0.25);cursor:pointer;transition:var(--transition)}
.banner-dot.active{width:30px;border-radius:4px;background:var(--sky)}
.scroll-hint{position:absolute;bottom:40px;right:48px;z-index:3;display:flex;flex-direction:column;align-items:center;gap:8px;color:rgba(255,255,255,0.35);font-size:11px;letter-spacing:1px}
.scroll-arrow{width:1px;height:40px;background:linear-gradient(to bottom,var(--sky),transparent);animation:scroll-anim 1.5s ease infinite}
@keyframes scroll-anim{0%{transform:scaleY(0);transform-origin:top;opacity:1}50%{transform:scaleY(1);transform-origin:top;opacity:1}100%{transform:scaleY(1);transform-origin:bottom;opacity:0}}

/* ---- 核心业务 ---- */
.biz-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.biz-card{padding:44px 40px;border-radius:var(--radius-lg);background:var(--white);border:1px solid rgba(0,102,204,0.07);box-shadow:var(--shadow);transition:var(--transition);display:flex;gap:28px;align-items:flex-start}
.biz-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:rgba(0,102,204,0.12)}
.biz-icon{width:72px;height:72px;flex-shrink:0;border-radius:18px;background:linear-gradient(135deg,rgba(0,102,204,0.1),rgba(0,163,224,0.1));display:flex;align-items:center;justify-content:center;font-size:32px;transition:var(--transition)}
.biz-card:hover .biz-icon{background:linear-gradient(135deg,var(--blue),var(--sky))}
.biz-info h3{font-size:22px;font-weight:700;margin-bottom:10px}
.biz-info>p{font-size:14px;color:var(--text-sub);line-height:1.8;margin-bottom:16px}
.biz-tags{display:flex;gap:8px;flex-wrap:wrap}
.biz-tag{padding:4px 12px;border-radius:50px;font-size:11px;font-weight:600;background:rgba(0,102,204,0.06);color:var(--blue)}
.biz-arrow{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--blue);margin-top:8px}
.biz-arrow svg{transition:var(--transition)}
.biz-card:hover .biz-arrow svg{transform:translateX(4px)}

/* ---- 统计数据 ---- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-card{padding:36px 24px;border-radius:var(--radius-lg);text-align:center;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.09);transition:var(--transition)}
.stat-card:hover{background:rgba(255,255,255,0.09);transform:translateY(-4px)}
.stat-num{font-family:var(--font-en);font-size:48px;font-weight:900;background:linear-gradient(135deg,var(--white),var(--sky));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.stat-unit{font-size:22px;opacity:0.5}
.stat-label{font-size:14px;color:rgba(255,255,255,0.45);margin-top:8px}
.stat-divider{width:32px;height:3px;background:linear-gradient(90deg,var(--sky),transparent);margin:12px auto 0;border-radius:2px}

/* ---- 解决方案 ---- */
.sol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.sol-card{padding:32px 28px;border-radius:var(--radius-lg);background:var(--white);border:1px solid rgba(0,102,204,0.06);box-shadow:0 2px 12px rgba(0,102,204,0.05);transition:var(--transition);cursor:pointer;position:relative;overflow:hidden}
.sol-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--sky));transform:scaleX(0);transform-origin:left;transition:var(--transition)}
.sol-card:hover::before{transform:scaleX(1)}
.sol-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.sol-icon{font-size:36px;margin-bottom:16px}
.sol-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.sol-card>p{font-size:13px;color:var(--text-sub);line-height:1.7}
.sol-tech{display:flex;gap:6px;flex-wrap:wrap;margin-top:16px}
.tech-tag{padding:3px 10px;border-radius:50px;font-size:10px;font-weight:600;background:var(--bg);color:var(--blue)}

/* ---- 合作伙伴 ---- */
.partner-logos{display:flex;gap:40px;justify-content:center;flex-wrap:wrap;margin-top:48px;align-items:center}
.partner-logo{width:120px;height:48px;border-radius:8px;background:rgba(0,102,204,0.05);border:1px solid rgba(0,102,204,0.08);display:flex;align-items:center;justify-content:center;color:var(--text-sub);font-size:12px;font-weight:600;filter:grayscale(100%);opacity:0.5;transition:var(--transition)}
.partner-logo:hover{filter:none;opacity:1}
.partner-logos-img{max-width:100%;height:60px;object-fit:contain;filter:grayscale(100%);opacity:0.55;transition:var(--transition)}
.partner-logos-img:hover{filter:none;opacity:1}

/* ---- 典型案例 ---- */
.case-card{display:flex;gap:24px;padding:28px;border-radius:var(--radius-lg);background:var(--white);border:1px solid rgba(0,102,204,0.07);box-shadow:var(--shadow);transition:var(--transition)}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.case-card-img{width:220px;height:150px;object-fit:cover;border-radius:12px;flex-shrink:0;background:var(--bg)}
.case-card-img-txt{width:220px;height:150px;border-radius:12px;flex-shrink:0;background:linear-gradient(135deg,var(--blue),var(--sky));display:flex;align-items:center;justify-content:center;font-size:48px}
.case-result{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:8px;background:rgba(0,200,151,0.1);font-size:12px;color:#00C897;font-weight:600;margin-top:12px}

/* ---- 资质 ---- */
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cert-card{padding:24px 20px;border-radius:var(--radius);background:var(--white);border:1px solid rgba(0,102,204,0.1);box-shadow:var(--shadow);display:flex;gap:16px;align-items:center;transition:var(--transition)}
.cert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.cert-icon{width:48px;height:48px;flex-shrink:0;border-radius:12px;background:linear-gradient(135deg,rgba(0,102,204,0.1),rgba(0,163,224,0.1));display:flex;align-items:center;justify-content:center;font-size:22px}
.cert-info h4{font-size:14px;font-weight:700;margin-bottom:4px}
.cert-info p{font-size:12px;color:var(--text-sub)}

/* ---- 团队 ---- */
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.team-card{text-align:center;padding:32px 20px;border-radius:var(--radius-lg);background:var(--white);box-shadow:var(--shadow);transition:var(--transition)}
.team-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.team-avatar{width:80px;height:80px;border-radius:50%;margin:0 auto 16px;background:linear-gradient(135deg,var(--blue),var(--sky));display:flex;align-items:center;justify-content:center;font-size:32px;color:var(--white);font-weight:700}
.team-card h4{font-size:16px;font-weight:700;margin-bottom:4px}
.team-card .role{font-size:12px;color:var(--blue);font-weight:600;margin-bottom:8px}
.team-card>p{font-size:12px;color:var(--text-sub);line-height:1.7}

/* ---- Footer ---- */
.footer{background:#081423;color:rgba(255,255,255,0.65);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:64px;border-bottom:1px solid rgba(255,255,255,0.07)}
.footer-brand .footer-logo-name{font-size:16px;font-weight:700;color:var(--white)}
.footer-brand .footer-logo-sub{font-size:11px;color:rgba(255,255,255,0.35)}
.footer-brand>p{font-size:13px;line-height:1.8;margin-top:16px;color:rgba(255,255,255,0.45)}
.footer h4{font-size:13px;font-weight:700;color:var(--white);letter-spacing:1px;text-transform:uppercase;margin-bottom:20px}
.footer ul li{margin-bottom:10px}
.footer ul li a{font-size:13px;color:rgba(255,255,255,0.45);transition:var(--transition)}
.footer ul li a:hover{color:var(--sky);padding-left:4px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:13px;line-height:1.6}
.footer-contact svg{flex-shrink:0;margin-top:3px;color:var(--sky)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:20px 0;font-size:12px;color:rgba(255,255,255,0.25)}
.footer-bottom a{color:rgba(255,255,255,0.35)}
.footer-bottom a:hover{color:var(--sky)}

/* ---- 内页 Banner ---- */
.inner-banner{padding:180px 0 100px;background:var(--bg-dark);position:relative;overflow:hidden}
.inner-banner::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(0,102,204,0.08) 1px,transparent 1px),linear-gradient(90deg,rgba(0,102,204,0.08) 1px,transparent 1px);background-size:80px 80px}
.inner-banner-content{position:relative;z-index:1}
.inner-banner h1{font-size:clamp(36px,5vw,56px);font-weight:900;color:var(--white);margin-bottom:12px;letter-spacing:-0.5px}
.inner-banner>p{font-size:17px;color:rgba(255,255,255,0.55)}
.tech-tags-bar{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.tech-tag-badge{padding:6px 16px;border-radius:50px;font-size:12px;font-weight:600;background:rgba(0,163,224,0.12);border:1px solid rgba(0,163,224,0.22);color:var(--sky)}

/* ---- 时间轴 ---- */
.timeline{position:relative;padding-left:40px}
.timeline::before{content:'';position:absolute;left:15px;top:8px;bottom:8px;width:2px;background:linear-gradient(to bottom,var(--blue),var(--sky),var(--green));border-radius:2px}
.timeline-item{position:relative;margin-bottom:40px}
.timeline-item::before{content:'';position:absolute;left:-33px;top:8px;width:12px;height:12px;border-radius:50%;background:var(--blue);border:3px solid var(--bg);box-shadow:0 0 0 3px var(--blue)}
.timeline-year{font-family:var(--font-en);font-size:13px;font-weight:700;color:var(--blue);margin-bottom:4px}
.timeline-title{font-size:17px;font-weight:700;margin-bottom:4px}
.timeline-desc{font-size:13px;color:var(--text-sub)}

/* ---- AI服务卡片 ---- */
.ai-service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.ai-service-card{padding:36px 28px;border-radius:var(--radius-lg);background:var(--white);border:1px solid rgba(0,102,204,0.07);box-shadow:var(--shadow);transition:var(--transition);cursor:pointer;position:relative;overflow:hidden}
.ai-service-card::after{content:'';position:absolute;top:-40px;right:-40px;width:100px;height:100px;border-radius:50%;background:linear-gradient(135deg,rgba(0,102,204,0.07),rgba(0,163,224,0.07));transition:var(--transition)}
.ai-service-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.ai-service-card:hover::after{transform:scale(2.5)}
.ai-service-icon{font-size:40px;margin-bottom:16px}
.ai-service-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.ai-service-card>p{font-size:13px;color:var(--text-sub);line-height:1.8}
.ai-service-features{margin-top:16px;display:flex;flex-direction:column;gap:6px}
.ai-service-features li{font-size:12px;color:var(--text-sub);display:flex;align-items:center;gap:6px}
.ai-service-features li::before{content:'✓';color:var(--green);font-weight:700;font-size:10px}

/* ---- 架构图 ---- */
.arch-diagram{background:var(--bg-dark);border-radius:var(--radius-lg);padding:48px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.arch-layer{text-align:center}
.arch-layer-title{padding:10px 16px;border-radius:10px;font-size:12px;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;margin-bottom:12px}
.arch-layer-title.l1{background:rgba(0,102,204,0.2);color:var(--sky)}
.arch-layer-title.l2{background:rgba(0,163,224,0.2);color:#7DD3FC}
.arch-layer-title.l3{background:rgba(0,200,151,0.2);color:var(--green)}
.arch-layer-title.l4{background:rgba(255,255,255,0.1);color:rgba(255,255,255,0.65)}
.arch-items{display:flex;flex-direction:column;gap:8px}
.arch-item{padding:10px 12px;border-radius:8px;font-size:11px;font-weight:500;background:rgba(255,255,255,0.06);color:rgba(255,255,255,0.65);border:1px solid rgba(255,255,255,0.07);transition:var(--transition)}
.arch-item:hover{background:rgba(0,163,224,0.15);color:var(--white)}

/* ---- 响应式 ---- */
@media (max-width:1024px){
  .container{padding:0 32px}
  .navbar{padding:0 32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .sol-grid{grid-template-columns:repeat(2,1fr)}
  .biz-cards{grid-template-columns:1fr}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .ai-service-grid{grid-template-columns:repeat(2,1fr)}
  .cert-grid{grid-template-columns:repeat(2,1fr)}
  .arch-diagram{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .navbar{padding:0 20px;height:64px}
  .nav-links{display:none}
  .hamburger{display:flex}
  .banner h1{font-size:34px}
  .section{padding:60px 0}
  .section-title{font-size:30px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .sol-grid{grid-template-columns:1fr}
  .cert-grid{grid-template-columns:1fr}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .ai-service-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center}
  .form-row{grid-template-columns:1fr}
  .banner-btns{flex-direction:column}
  .case-card{flex-direction:column}
  .case-card-img{width:100%;height:160px}
  .case-card-img-txt{width:100%}
}