:root{
  --primary:#1E88F5;
  --primary-dark:#1565C0;
  --deep:#1B3B6F;
  --deep2:#0F2A52;
  --bg:#F5F8FC;
  --bg2:#EEF3FA;
  --text:#1F2937;
  --text2:#4B5563;
  --muted:#6B7280;
  --line:#E5EAF2;
  --white:#fff;
  --shadow:0 6px 24px rgba(30,136,245,.08);
  --shadow-lg:0 12px 40px rgba(27,59,111,.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{font-family:-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{width:1200px;max-width:1200px;margin:0 auto;padding:0}

/* ===== 顶部导航 ===== */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:var(--deep)}
.logo-icon{width:36px;height:36px;display:flex;align-items:center;justify-content:center}
.nav-menu{display:flex;gap:34px;list-style:none;align-items:center}
.nav-menu > li{position:relative;padding:24px 0}
.nav-menu a{font-size:15px;color:var(--text2);position:relative;transition:.2s;display:inline-flex;align-items:center;gap:4px}
.nav-menu a:hover,.nav-menu a.active{color:var(--primary)}
.nav-menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-24px;height:3px;background:var(--primary);border-radius:2px}
.nav-menu .caret{width:10px;height:10px;transition:.25s;stroke:currentColor;fill:none;stroke-width:2}
.nav-menu > li:hover .caret{transform:rotate(180deg);stroke:var(--primary)}

/* 下拉菜单 */
.has-dropdown{cursor:pointer}
.dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);min-width:280px;background:#fff;border-radius:14px;box-shadow:0 20px 50px rgba(27,59,111,.18);border:1px solid var(--line);padding:12px;opacity:0;visibility:hidden;transition:.25s;z-index:200}
.has-dropdown:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown::before{content:"";position:absolute;top:-6px;left:50%;transform:translateX(-50%) rotate(45deg);width:12px;height:12px;background:#fff;border-left:1px solid var(--line);border-top:1px solid var(--line)}
.dropdown-item{display:flex;align-items:flex-start;gap:12px;padding:14px 14px;border-radius:10px;transition:.2s;text-decoration:none}
.dropdown-item:hover{background:var(--bg)}
.dropdown-item:hover .di-title{color:var(--primary)}
.di-icon{width:40px;height:40px;flex-shrink:0;border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.di-icon svg{width:22px;height:22px}
.di-text{flex:1}
.di-title{font-size:14px;color:var(--deep);font-weight:600;margin-bottom:2px;transition:.2s}
.di-desc{font-size:12px;color:var(--muted);line-height:1.5}
.nav-right{display:flex;align-items:center;gap:20px}
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 22px;border-radius:24px;font-size:14px;font-weight:500;transition:.25s;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(30,136,245,.35)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--primary);color:var(--primary);background:transparent}
.btn-ghost:hover{background:var(--primary);color:#fff}
.nav-tel{display:flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px}

/* ===== Hero 轮播 ===== */
.hero-carousel{position:relative;background:linear-gradient(135deg,#EEF5FF 0%,#F5F8FC 60%,#E6F0FF 100%);overflow:hidden;height:688px}
.hero-carousel::before{content:"";position:absolute;top:-100px;right:-100px;width:400px;height:400px;background:radial-gradient(circle,rgba(30,136,245,.15),transparent 70%);border-radius:50%;z-index:0}
.carousel-track{position:relative;display:flex;transition:transform .6s cubic-bezier(.4,0,.2,1);height:100%}
.carousel-slide{flex:0 0 100%;position:relative;z-index:1;display:flex;align-items:stretch;justify-content:center;height:688px;overflow:visible}
.hero-grid{display:grid;grid-template-columns:.96fr 1.18fr;gap:80px;align-items:center;justify-content:center;position:relative;z-index:1;padding:0 60px 170px;box-sizing:border-box;width:1200px;max-width:1200px;height:688px;margin:0 auto;overflow:visible;transform:translateX(-60px)}
.hero-left{display:flex;flex-direction:column;justify-content:center;align-self:center;height:100%}
.hero-left h1{font-size:56px;line-height:1.22;color:var(--deep);font-weight:800;margin-bottom:22px;letter-spacing:-1px}
.hero-left h1 .hl{color:var(--primary)}
.hero-left .sub{font-size:20px;color:var(--text2);margin-bottom:38px;font-weight:500;letter-spacing:.2px}
.btn-lg{padding:14px 38px;font-size:16px;border-radius:28px}
.hero-tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:28px;color:var(--text2);font-size:14px}
.plat-badge{display:inline-flex;align-items:center;gap:5px;color:var(--deep);font-weight:600;font-size:14px}
.plat-badge img{width:16px;height:16px;object-fit:contain;border-radius:4px;display:block}
.plat-divider{color:var(--line);margin:0 2px}
.plat-slash{margin-left:10px;color:var(--text2);font-size:14px}
.plat-slash strong{color:var(--primary);font-weight:700;margin:0 2px}
.hero-right{display:flex;justify-content:flex-start;align-items:center;align-self:center;min-height:100%;padding-left:0;overflow:visible;height:100%;position:relative;transform:translateX(40px)}
.hero-illust{width:100%;max-width:1440px;display:flex;justify-content:center;align-items:center;overflow:visible;background:none;transform:scale(1.5);transform-origin:left center}
.hero-illust img{width:100%;height:auto;max-width:100%;display:block;image-rendering:-webkit-optimize-contrast}

/* 轮播左右箭头 */
.carousel-arrow{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:50%;display:none;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 14px rgba(30,136,245,.15);color:var(--primary);z-index:5;transition:.2s}
.carousel-arrow:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.carousel-arrow svg{width:20px;height:20px}
.carousel-arrow.prev{left:24px}
.carousel-arrow.next{right:24px}
.hero-carousel.has-multi .carousel-arrow{display:flex}

/* 轮播圆点指示器 */
.carousel-dots{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);display:none;gap:8px;z-index:5}
.hero-carousel.has-multi .carousel-dots{display:flex}
.carousel-dot{width:24px;height:4px;background:rgba(30,136,245,.25);border:none;border-radius:2px;cursor:pointer;transition:.25s;padding:0}
.carousel-dot.active{background:var(--primary);width:36px}
.hero h1{font-size:44px;line-height:1.25;color:var(--deep);font-weight:700;margin-bottom:20px;letter-spacing:-.5px}
.hero h1 .hl{color:var(--primary)}
.hero .sub{font-size:17px;color:var(--text2);margin-bottom:32px;max-width:520px}
.hero-tags{display:flex;gap:12px;margin-bottom:32px;flex-wrap:wrap}
.hero-tag{padding:6px 14px;background:rgba(30,136,245,.1);color:var(--primary);border-radius:20px;font-size:13px;font-weight:500}
.hero-cta{display:flex;gap:14px}
.hero-visual{position:relative}
.video-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-lg);aspect-ratio:16/10;position:relative;background:linear-gradient(135deg,#1B3B6F,#1E88F5)}
.video-card::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 40%,rgba(255,255,255,.1),transparent 60%)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:72px;height:72px;border-radius:50%;background:rgba(255,255,255,.95);display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(0,0,0,.2);z-index:2;cursor:pointer;transition:.2s}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.08)}
.play-btn svg{width:24px;height:24px;fill:var(--primary);margin-left:4px}
.hero-decor{position:absolute;color:#fff;z-index:1}
.hero-decor.d1{top:20px;left:24px;font-size:13px;opacity:.85}
.hero-decor.d2{bottom:24px;left:24px;font-size:11px;opacity:.7}


/* 侧边悬浮 */
.floating{position:fixed;right:20px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:10px;z-index:50}
.float-btn{width:56px;height:64px;background:#fff;border-radius:10px;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;font-size:11px;color:var(--text2);cursor:pointer;transition:.2s}
.float-btn:hover{background:var(--primary);color:#fff}
.float-btn svg{width:22px;height:22px}

/* ===== 通用 section ===== */
section{padding:80px 0}
.sec-head{text-align:center;margin-bottom:56px}
.sec-head h2{font-size:34px;color:var(--deep);font-weight:700;letter-spacing:-.3px;margin-bottom:12px}
.sec-head .desc{color:var(--muted);font-size:15px;max-width:640px;margin:0 auto}

/* ===== 协作模式区（环形视觉） ===== */
.orbit-section{background:#fff;padding:90px 0}
.orbit-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:80px;align-items:center;max-width:1100px;margin:0 auto}
.orbit-text{text-align:center;display:flex;flex-direction:column;align-items:center}
.orbit-title-icon{width:64px;height:64px;display:block;margin:0 auto 16px auto;object-fit:contain}
.orbit-text h3{font-size:22px;color:var(--deep);margin-bottom:12px;font-weight:600}
.orbit-text p{color:var(--text2);font-size:14px;line-height:1.7}
.orbit-arrow{color:var(--primary);font-size:32px;font-weight:200;opacity:.4}
.orbit-visual{width:420px;height:auto;position:relative;margin:0 auto;display:flex;align-items:center;justify-content:center}
.orbit-visual img{display:block;width:100%;height:auto;object-fit:contain}
.orbit-center{width:110px;height:110px;background:linear-gradient(135deg,#1E88F5,#1565C0);border-radius:50%;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;box-shadow:0 10px 30px rgba(30,136,245,.4)}
.orbit-center svg{width:44px;height:44px;fill:#fff;margin-bottom:6px}
.orbit-center span{font-size:15px;font-weight:600}
.orbit-ring{position:absolute;inset:0;border:2px dashed rgba(30,136,245,.3);border-radius:50%;animation:rotate 30s linear infinite}
@keyframes rotate{to{transform:rotate(360deg)}}
.orbit-item{position:absolute;width:56px;height:56px;background:#fff;border:2px solid #E3EDF9;border-radius:14px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px rgba(30,136,245,.12)}
.orbit-item svg{width:26px;height:26px;stroke:var(--primary);fill:none;stroke-width:1.8}
.orbit-item.i1{top:0;left:50%;transform:translateX(-50%)}
.orbit-item.i2{top:50%;right:0;transform:translateY(-50%)}
.orbit-item.i3{bottom:0;left:50%;transform:translateX(-50%)}
.orbit-item.i4{top:50%;left:0;transform:translateY(-50%)}

/* ===== 四个在线 ===== */
.online-sec{background:var(--bg)}
.card-grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.online-card{background:#fff;border-radius:16px;padding:36px 28px 32px;text-align:center;transition:.3s;box-shadow:0 2px 10px rgba(27,59,111,.04);border:1px solid transparent}
.online-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(30,136,245,.15)}
.online-illust{width:110px;height:110px;margin:0 auto 20px;background:linear-gradient(135deg,#E8F2FF,#F5F9FF);border-radius:20px;display:flex;align-items:center;justify-content:center}
.online-illust svg{width:88px;height:88px}
.online-card h3{font-size:20px;color:var(--deep);margin-bottom:12px;font-weight:600}
.online-card ul{list-style:none;color:var(--text2);font-size:13px;line-height:1.9;margin-bottom:20px}
.online-tag{display:inline-block;padding:8px 18px;border:1px solid var(--primary);color:var(--primary);border-radius:20px;font-size:13px;font-weight:500;transition:.2s}
.online-card:hover .online-tag{background:var(--primary);color:#fff}

/* ===== 场景 Tab ===== */
.scene-sec{background:linear-gradient(180deg,#1B3B6F 0%,#0F2A52 100%);color:#fff;position:relative;overflow:hidden}
.scene-sec::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(30,136,245,.2),transparent 60%)}.scene-sec::after{content:'';position:absolute;inset:0;background:url('../assets/img_001_8e6efa8496ab.jpg') center center / cover no-repeat;opacity:.10;mix-blend-mode:screen;pointer-events:none;z-index:0}
.scene-sec .sec-head h2{color:#fff}
.scene-sec .sec-head .desc{color:rgba(255,255,255,.7)}
.scene-wrap{position:relative;z-index:1;background:rgba(255,255,255,.04);border-radius:20px;padding:8px;backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.08)}
.scene-tabs{display:grid;grid-template-columns:1fr 2fr;gap:0;min-height:420px}
.scene-tab-list{display:flex;flex-direction:column;gap:8px;padding:16px}
.scene-tab{padding:20px 22px;background:transparent;border-radius:12px;color:rgba(255,255,255,.8);text-align:left;cursor:pointer;transition:.25s;display:flex;align-items:center;gap:14px;font-size:15px;font-weight:500}
.scene-tab:hover{background:rgba(255,255,255,.06)}
.scene-tab.active{background:linear-gradient(135deg,#1E88F5,#1565C0);color:#fff;box-shadow:0 8px 24px rgba(30,136,245,.35)}
.scene-tab-num{width:32px;height:32px;border-radius:8px;background:rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600}
.scene-tab.active .scene-tab-num{background:rgba(255,255,255,.25)}
.scene-panel{padding:40px 44px;display:none;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center}
.scene-panel.active{display:grid}
.scene-panel h3{font-size:26px;margin-bottom:16px;color:#fff}
.scene-panel p{color:rgba(255,255,255,.75);margin-bottom:24px;line-height:1.8}
.scene-panel h4{font-size:14px;color:rgba(255,255,255,.6);margin-bottom:10px;letter-spacing:1px}
.scene-panel ul{list-style:none;display:flex;flex-wrap:wrap;gap:10px}
.scene-panel ul li{padding:8px 16px;background:rgba(255,255,255,.08);border-radius:20px;font-size:13px;border:1px solid rgba(255,255,255,.1)}
.scene-illust{background:linear-gradient(135deg,rgba(30,136,245,.2),rgba(21,101,192,.1));border-radius:16px;padding:30px;aspect-ratio:1.1;display:flex;align-items:center;justify-content:center;position:relative}
.scene-illust svg{width:100%;max-width:280px;height:auto}

/* ===== 产品优势 ===== */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.adv-card{padding:36px 28px;border-radius:16px;background:#fff;border:1px solid var(--line);transition:.3s;position:relative;overflow:hidden}
.adv-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(30,136,245,.3)}
.adv-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),transparent);transform:scaleX(0);transform-origin:left;transition:.3s}
.adv-card:hover::before{transform:scaleX(1)}
.adv-icon{width:56px;height:56px;background:linear-gradient(135deg,#E8F2FF,#D1E5FF);border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.adv-icon svg{width:28px;height:28px;stroke:var(--primary);fill:none;stroke-width:1.8}
.adv-card h3{font-size:18px;color:var(--deep);margin-bottom:10px;font-weight:600}
.adv-card p{font-size:14px;color:var(--text2);line-height:1.7}

/* ===== 数据看板 ===== */
.stats-sec{background:linear-gradient(120deg,#1E88F5 0%,#1565C0 50%,#1B3B6F 100%);color:#fff;padding:70px 0;position:relative;overflow:hidden}
.stats-sec::before{content:"";position:absolute;inset:0;background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'><circle cx='30' cy='30' r='1' fill='white' opacity='.15'/></svg>");opacity:.4}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;position:relative;z-index:1}
.stat-item{text-align:center}
.stat-num{font-size:64px;font-weight:700;line-height:1;background:linear-gradient(180deg,#fff,#D6EAFF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:12px}
.stat-num sup{font-size:32px;vertical-align:top;margin-left:2px}
.stat-label{font-size:15px;color:rgba(255,255,255,.85)}
.stats-bottom{text-align:center;margin-top:40px;font-size:15px;color:rgba(255,255,255,.75);position:relative;z-index:1}
.stats-bottom strong{color:#fff;font-size:17px;margin:0 4px}

/* ===== 客户案例 ===== */
.case-sec{background:#fff}
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-bottom:56px;background:#fff}
.logo-item{aspect-ratio:2.4;background:#fff;border:1px solid #E5E7EB;border-radius:8px;display:flex;align-items:center;justify-content:center;padding:8px;overflow:hidden;box-shadow:none;transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease}.logo-item img{display:block;max-width:100%;max-height:88px;width:auto;height:auto;object-fit:contain;filter:none}
.logo-item:hover{background:#fff;border-color:#D6DCE5;color:inherit;transform:translateY(-4px);box-shadow:0 10px 24px rgba(27,59,111,.10)}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.3s}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.case-cover{aspect-ratio:16/9;background:linear-gradient(135deg,#1E88F5,#1B3B6F);position:relative;display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:500}
.case-cover.c2{background:linear-gradient(135deg,#4A6CF7,#1B3B6F)}
.case-cover.c3{background:linear-gradient(135deg,#00B8D9,#1E88F5)}
.case-body{padding:24px}
.case-tag{display:inline-block;padding:4px 12px;background:rgba(30,136,245,.1);color:var(--primary);border-radius:12px;font-size:12px;margin-bottom:10px}
.case-body h3{font-size:17px;color:var(--deep);margin-bottom:8px;font-weight:600}
.case-body p{font-size:13px;color:var(--text2);line-height:1.7}
.case-metric{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--primary);font-weight:600}


/* ===== CTA 底 ===== */
.cta-sec{background:linear-gradient(120deg,#1B3B6F,#1E88F5);color:#fff;padding:70px 0}
.cta-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center}
.cta-grid h2{font-size:32px;font-weight:700;margin-bottom:14px;line-height:1.3}
.cta-grid p{color:rgba(255,255,255,.8);font-size:15px;margin-bottom:20px}
.cta-features{display:flex;gap:24px}
.cta-features span{display:flex;align-items:center;gap:6px;font-size:13px;color:rgba(255,255,255,.85)}
.cta-features svg{width:16px;height:16px;stroke:#7ED0FF;fill:none;stroke-width:2}
.cta-form{background:#fff;border-radius:16px;padding:32px;color:var(--text)}
.cta-form h3{font-size:20px;color:var(--deep);margin-bottom:20px;text-align:center}
.form-group{margin-bottom:14px}
.form-group input{width:100%;padding:12px 16px;border:1px solid var(--line);border-radius:8px;font-size:14px;transition:.2s;font-family:inherit}
.form-group input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,136,245,.1)}
.cta-form .btn-primary{width:100%;justify-content:center;padding:13px;font-size:15px;margin-top:6px}
.cta-form .tip{text-align:center;font-size:12px;color:var(--muted);margin-top:12px}

/* ===== Footer ===== */
footer{background:#262834;color:rgba(255,255,255,.75);padding:60px 0 24px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;margin-bottom:40px}
.foot-brand .logo{color:#fff;margin-bottom:14px}
.foot-brand p{font-size:13px;color:rgba(255,255,255,.55);line-height:1.7;margin-bottom:14px}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600}
.foot-col ul{list-style:none}
.foot-col li{margin-bottom:10px;font-size:13px}
.foot-col a{color:rgba(255,255,255,.6);transition:.2s}
.foot-col a:hover{color:#fff}
.foot-contact .tel{font-size:22px;color:#fff;font-weight:700;margin-bottom:6px}
.foot-contact .tel-label{font-size:12px;color:rgba(255,255,255,.5);margin-bottom:14px}
.foot-contact p{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:6px}.foot-contact .contact-row{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:13px;color:rgba(255,255,255,.7);line-height:1.5}.foot-contact .contact-row img{width:16px;height:16px;flex-shrink:0;object-fit:contain;opacity:.85;display:block}.foot-contact .contact-row span{flex:1;min-width:0;word-break:break-all}
.qr-row{display:flex;gap:12px;margin-top:14px}
.qr{width:80px;height:80px;background:#fff;border-radius:6px;display:flex;align-items:center;justify-content:center;color:#0F2A52;font-size:10px;text-align:center;padding:6px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:20px;text-align:center;font-size:12px;color:rgba(255,255,255,.4)}
.foot-bottom a{color:rgba(255,255,255,.5)}

/* ===== 响应式 ===== */
@media (max-width:960px){
  .nav-menu{display:none}
  .hero-grid,.orbit-grid,.scene-tabs,.scene-panel.active,.cta-grid,.foot-grid,  .card-grid-4,.adv-grid,.stats-grid,.case-grid,.logo-wall{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:32px}
  .sec-head h2{font-size:26px}
  .orbit-arrow{display:none}
  .floating{display:none}
}

/* 案例封面图片模式 */
.case-cover-img{padding:0;background:#0F2A52 !important;overflow:hidden}
.case-cover-img .case-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.case-cover-img .case-cover-label{position:absolute;left:0;right:0;bottom:0;padding:14px 18px;background:linear-gradient(to top,rgba(15,42,82,.85),rgba(15,42,82,.4) 70%,transparent);color:#fff;font-size:15px;font-weight:600;z-index:2;text-shadow:0 2px 8px rgba(0,0,0,.4)}