: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{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 顶部导航（全站统一） ===== */
.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)}
.has-dropdown{cursor:pointer}
.dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);min-width:320px;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-primary.active{background:var(--primary-dark);box-shadow:0 6px 20px rgba(30,136,245,.5)}
.nav-tel{display:flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px}

/* ===== 面包屑 ===== */
.crumb{background:#fff;border-bottom:1px solid var(--line);padding:14px 0;font-size:13px;color:var(--muted)}
.crumb .container{display:flex;align-items:center;gap:8px}
.crumb svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2}
.crumb a{color:var(--muted);transition:.2s}
.crumb a:hover{color:var(--primary)}
.crumb .sep{opacity:.5}
.crumb .cur{color:var(--primary);font-weight:500}

/* ===== 主视觉：驾驶室深色沉浸区 ===== */
.trial-hero{position:relative;background:#0A1930 url('../assets/img_103_a08aaa3277e2.png') center center / cover no-repeat;padding:70px 0 90px;overflow:hidden;color:#fff}
/* 驾驶舱背景插画 */
.hero-bg{position:absolute;inset:0;z-index:0;opacity:1}
.hero-bg svg{width:100%;height:100%;object-fit:cover}
.hero-bg::after{content:"";position:absolute;inset:0;background:transparent}
.trial-hero::before{content:none}
.trial-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr 1fr;gap:60px;align-items:center;min-height:600px}

/* 左侧文案 */
.trial-left h1{font-size:52px;font-weight:800;line-height:1.15;margin-bottom:18px;letter-spacing:-.5px}
.trial-left h1 .hl{background:linear-gradient(90deg,#4FB1FF,#7ED0FF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.trial-left .lead{font-size:17px;color:rgba(255,255,255,.85);margin-bottom:32px;max-width:520px;line-height:1.75}
.trial-benefits{display:grid;grid-template-columns:1fr 1fr;gap:16px 24px;max-width:500px}
.tb-item{display:flex;gap:14px;align-items:flex-start}
.tb-item svg{width:22px;height:22px;fill:none;stroke:#7ED0FF;stroke-width:2;flex-shrink:0;margin-top:2px}
.tb-item .tb-title{font-size:15px;color:#fff;font-weight:600;margin-bottom:4px}
.tb-item .tb-desc{font-size:12px;color:rgba(255,255,255,.65);line-height:1.6}

/* 右侧表单卡片（半透明玻璃拟态） */
.trial-form{background:#FFFFFF;border:1px solid #E5E7EB;border-radius:20px;padding:44px 44px;box-shadow:0 24px 60px rgba(27,59,111,.18);color:#1B3B6F}
.trial-form h2{font-size:30px;font-weight:700;text-align:center;margin-bottom:8px;color:#fff}
.trial-form .subtitle{text-align:center;color:rgba(255,255,255,.7);font-size:14px;margin-bottom:30px}
.form-group{margin-bottom:16px;position:relative}
.form-group svg.f-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:18px;height:18px;stroke:rgba(255,255,255,.5);fill:none;stroke-width:2;pointer-events:none;transition:.2s}
.form-group input{width:100%;padding:14px 16px 14px 54px;background:#F7F9FC;border:1px solid #E5E7EB;border-radius:10px;font-size:15px;color:#1B3B6F;transition:.25s;font-family:inherit}.form-group input::placeholder{color:#9AA3B2}
.form-group input::placeholder{color:rgba(255,255,255,.5)}
.form-group input:focus{outline:none;border-color:#1E88F5;background:#fff;box-shadow:0 0 0 3px rgba(30,136,245,.15)}
.form-group input:focus + svg.f-icon,
.form-group:focus-within svg.f-icon{stroke:#4FB1FF}
.trial-form h2{color:#1B3B6F !important}.trial-form label,.trial-form p,.trial-form .form-tip,.trial-form .tip{color:#4B5A76}.trial-form .form-group .form-icon{color:#1E88F5}
.form-submit{width:100%;padding:15px;background:linear-gradient(135deg,#1E88F5,#4FB1FF);color:#fff;border-radius:10px;font-size:16px;font-weight:600;letter-spacing:1px;box-shadow:0 8px 24px rgba(30,136,245,.4);transition:.25s;margin-top:6px}
.form-submit:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(30,136,245,.55)}
.form-tip{text-align:center;color:rgba(255,255,255,.55);font-size:12px;margin-top:14px;line-height:1.6}
.form-tip a{color:#7ED0FF}




/* ===== Footer（全站统一） ===== */
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}
.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)}

/* 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}

@media (max-width:960px){
  .nav-menu{display:none}
  .trial-inner{grid-template-columns:1fr;gap:40px;min-height:auto}
  .trial-left h1{font-size:34px}
  .trial-form{padding:32px 26px}
  .trial-benefits{max-width:none}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .floating{display:none}
}

.trial-form{background:#FFFFFF !important;color:#6B7280 !important}
.trial-form h2{color:#4B5563 !important}
.trial-form .subtitle,.trial-form label,.trial-form p,.trial-form .form-tip,.trial-form .tip{color:#6B7280 !important}
.form-group svg.f-icon{stroke:#9CA3AF !important}
.form-group input{color:#111827 !important;background:#FFFFFF !important;border:1px solid #D1D5DB !important}
.form-group input::placeholder{color:#9CA3AF !important}
.form-group input:focus{color:#111827 !important;background:#FFFFFF !important;border-color:#1E88F5 !important}
.form-group input:focus + svg.f-icon,.form-group:focus-within svg.f-icon{stroke:#1E88F5 !important}

.form-group img.f-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:24px !important;height:24px !important;object-fit:contain;pointer-events:none;display:block}.trial-benefits img.tb-icon{width:24px !important;height:24px !important;object-fit:contain;display:block;flex-shrink:0}