:root{
  --red:#D62828;--red-dark:#B52020;--blue:#425286;--blue-dark:#34406A;
  --gray:#888;--gray-light:#E8EAF0;--bg:#F7F8FC;--dark:#222;--white:#fff;
  --shadow:0 4px 24px rgba(66,82,134,.10);--shadow-hover:0 12px 40px rgba(66,82,134,.18);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans SC','Microsoft YaHei',sans-serif;color:var(--dark);background:var(--white);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--gray-light);transition:all .3s}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:83px;max-width:1200px;margin:0 auto;padding:0 24px}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:900;color:var(--blue)}
.logo-mark{width:36px;height:36px;background:linear-gradient(135deg,var(--red),var(--red-dark));border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;font-weight:900}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:15px;font-weight:500;color:var(--dark);transition:color .2s;position:relative}
.nav-links a:hover{color:var(--red)}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--red);transition:width .2s}
.nav-links a:hover::after{width:100%}
.nav-cta{display:flex;flex-direction:column;align-items:stretch;gap:6px;width:200px;flex-shrink:0}
.nav-cta-buttons{display:flex;align-items:center;justify-content:stretch;gap:8px;width:100%}
.nav-cta-buttons .btn{flex:1;padding:5px 8px;font-size:13px;border-radius:6px;white-space:nowrap;text-align:center;justify-content:center}
.nav-phone{display:flex;align-items:center;justify-content:center;gap:6px;padding:5px 12px;border:1px solid #425286;border-radius:16px;color:#425286;font-size:12px;font-weight:600;cursor:pointer;transition:all .25s;line-height:1.4;width:100%;box-sizing:border-box}
.nav-phone:hover{background:#425286;color:#fff}
.nav-item{position:relative}
.nav-item > a{cursor:pointer}
.nav-item:hover > a{color:#425286}
.nav-item:hover > a::after{width:100%;background:#425286}
.dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(10px);background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(30,40,80,.15);padding:32px;opacity:0;visibility:hidden;transition:all .25s;z-index:1000;min-width:720px;pointer-events:none}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
.dropdown-grid{display:grid;gap:24px}
.dropdown-grid.col-2{grid-template-columns:1fr 1fr}
.dropdown-grid.col-3{grid-template-columns:1fr 1fr 1fr}
.dropdown-grid.col-4{grid-template-columns:1fr 1fr 1fr 1fr}
.dropdown-col h4{font-size:14px;font-weight:700;color:#425286;margin-bottom:10px;padding-bottom:8px;border-bottom:2px solid #F0F2F8;display:flex;align-items:center;gap:8px}
.dropdown-col h4 .dot{width:6px;height:6px;border-radius:50%;background:#D62828}
.dropdown-group{margin-bottom:6px;cursor:pointer;padding:4px 8px 4px 10px;border-radius:6px;transition:background .2s;border-left:3px solid #D62828}
.dropdown-group h5{font-size:13px;font-weight:600;color:#333;margin:0 0 2px;padding-left:4px;transition:color .2s;line-height:1.5}
.dropdown-group p{font-size:11px;color:#999;margin:0;padding-left:4px;line-height:1.4}
.dropdown-links{display:flex;flex-wrap:wrap;gap:4px 10px}
.dropdown-links a{font-size:13px;color:#425286;font-weight:500;transition:color .2s}
.dropdown-links a:hover{color:#D62828}
.dropdown-links span{color:#ddd;font-size:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 22px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .25s;border:none;font-family:inherit}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(66,82,134,.35)}
.btn-outline{background:transparent;color:var(--blue);border:1.5px solid var(--blue)}
.btn-outline:hover{background:var(--blue);color:#fff}
.btn-lg{padding:14px 32px;font-size:16px}
.mobile-menu-btn{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--blue)}

/* ===== Hero ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;margin-top:68px}
.hero-bg{position:absolute;inset:0;background:url('assets/hero-office.jpg') center/cover no-repeat;z-index:0}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(105deg,rgba(30,40,80,.92) 0%,rgba(42,55,100,.82) 45%,rgba(66,82,134,.65) 100%);z-index:1}
.hero-content{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:80px 24px;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;width:100%}
.hero-left h1{font-size:48px;font-weight:900;color:#fff;line-height:1.25;margin-bottom:20px;letter-spacing:-.5px}
.hero-left h1 span{color:#FF6B6B}
.hero-left p{font-size:18px;color:rgba(255,255,255,.85);line-height:1.8;margin-bottom:32px;max-width:520px}
.hero-badges{display:flex;gap:16px;margin-bottom:32px;flex-wrap:wrap}
.hero-badge{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);backdrop-filter:blur(8px);padding:8px 16px;border-radius:20px;color:#fff;font-size:13px;font-weight:500;border:1px solid rgba(255,255,255,.15)}
.hero-badge strong{color:#FFD700;font-size:18px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-cta .btn-primary{background:var(--blue);color:#fff}
.hero-cta .btn-primary:hover{background:var(--blue-dark)}
.hero-cta .btn-outline{background:rgba(255,255,255,.1);color:#fff;border:1.5px solid rgba(255,255,255,.4)}
.hero-cta .btn-outline:hover{background:rgba(255,255,255,.2)}
.hero-right{position:relative}
.hero-mockup{position:relative;border-radius:16px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.4);transform:perspective(1200px) rotateY(-6deg) rotateX(3deg);transition:transform .5s}
.hero-mockup:hover{transform:perspective(1200px) rotateY(0) rotateX(0)}
.hero-mockup img{width:100%;border-radius:16px}
.hero-mockup::before{content:'';position:absolute;top:0;left:0;right:0;height:32px;background:linear-gradient(180deg,rgba(0,0,0,.15),transparent);z-index:2}
.hero-float-card{position:absolute;bottom:-20px;left:-30px;background:#fff;border-radius:12px;padding:16px 20px;box-shadow:0 12px 40px rgba(0,0,0,.2);display:flex;align-items:center;gap:12px;z-index:3}
.hero-float-card .num{font-size:28px;font-weight:900;color:var(--red)}
.hero-float-card .label{font-size:12px;color:var(--gray);line-height:1.4}
.hero-dots{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:3}
.hero-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.3);cursor:pointer;transition:all .3s}
.hero-dot.active{background:var(--red);width:28px;border-radius:5px}

/* ===== 信任背书条 ===== */
.trust-bar{background:var(--blue);padding:36px 0}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.trust-item .num{font-size:42px;font-weight:900;color:#fff;line-height:1}
.trust-item .num span{font-size:20px;color:#FFD700}
.trust-item .label{font-size:14px;color:rgba(255,255,255,.7);margin-top:8px}

/* ===== 通用section ===== */
.section{padding:90px 0}
.section-alt{background:var(--bg)}
.section-head{text-align:center;margin-bottom:56px}
.section-tag{display:inline-block;padding:6px 16px;background:rgba(214,40,40,.08);color:var(--red);border-radius:20px;font-size:13px;font-weight:600;margin-bottom:16px}
.section-title{font-size:36px;font-weight:900;color:var(--blue);margin-bottom:14px;line-height:1.3}
.section-title h2{font-size:36px;font-weight:900;color:var(--blue);margin-bottom:12px;line-height:1.3}
.section-title p{font-size:16px;color:var(--gray);max-width:600px;margin:0 auto;line-height:1.7}
.section-desc{font-size:17px;color:var(--gray);max-width:640px;margin:0 auto;line-height:1.8}

/* ===== 五大能力引擎 ===== */
.engine-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.engine-card{background:#fff;border-radius:16px;padding:32px 24px;text-align:center;box-shadow:var(--shadow);transition:all .35s;position:relative;overflow:hidden;border-top:3px solid transparent}
.engine-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover);border-top-color:var(--red)}
.engine-icon{width:60px;height:60px;margin:0 auto 18px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:28px}
.engine-card:nth-child(1) .engine-icon{background:linear-gradient(135deg,#FFE5E5,#FFD0D0)}
.engine-card:nth-child(2) .engine-icon{background:linear-gradient(135deg,#E5EDFF,#D0E0FF)}
.engine-card:nth-child(3) .engine-icon{background:linear-gradient(135deg,#E5FFE5,#D0FFD0)}
.engine-card:nth-child(4) .engine-icon{background:linear-gradient(135deg,#FFF5E5,#FFEBD0)}
.engine-card:nth-child(5) .engine-icon{background:linear-gradient(135deg,#F5E5FF,#EBD0FF)}
.engine-card h3{font-size:18px;font-weight:700;color:var(--blue);margin-bottom:10px}
.engine-card p{font-size:13px;color:var(--gray);line-height:1.7}

/* ===== 五大引擎流程图 ===== */
.engine-flow{display:flex;align-items:stretch;justify-content:center;gap:0;position:relative}
.engine-step{flex:1;max-width:200px;text-align:center;padding:28px 12px;position:relative;z-index:1}
.engine-step-icon{width:76px;height:76px;margin:0 auto 16px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 24px rgba(0,0,0,.12);transition:all .35s;position:relative}
.engine-step:hover .engine-step-icon{transform:scale(1.12);box-shadow:0 10px 32px rgba(0,0,0,.18)}
.engine-step-icon::after{content:'';position:absolute;inset:-4px;border-radius:50%;border:2px dashed var(--gray-light);opacity:0;transition:opacity .3s}
.engine-step:hover .engine-step-icon::after{opacity:1}
.engine-step h3{font-size:18px;font-weight:700;color:var(--blue);margin-bottom:6px}
.engine-step p{font-size:13px;color:var(--gray);line-height:1.5}
.engine-step-num{position:absolute;top:6px;left:50%;transform:translateX(-50%);font-size:42px;font-weight:900;color:rgba(66,82,134,.05);z-index:-1;line-height:1}
.engine-connector{display:flex;align-items:center;color:var(--red);font-size:22px;font-weight:700;padding:0 2px;flex-shrink:0}

/* ===== 产品Tab切换 ===== */
.product-tabs{display:flex;justify-content:center;gap:10px;margin-bottom:44px;flex-wrap:wrap}
.product-tab{padding:11px 24px;border-radius:26px;font-size:14px;font-weight:600;cursor:pointer;transition:all .25s;background:var(--gray-light);color:var(--gray);border:none;font-family:inherit}
.product-tab.active{background:var(--red);color:#fff;box-shadow:0 4px 16px rgba(214,40,40,.3)}
.product-tab:hover:not(.active){background:#dde0ea;color:var(--blue)}
.product-panel{display:none;animation:fadeIn .45s ease}
.product-panel.active{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@keyframes fadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.product-card-v2{background:#fff;border-radius:16px;padding:30px 24px;box-shadow:var(--shadow);transition:all .35s;cursor:pointer;border:1px solid transparent;display:flex;flex-direction:column;align-items:flex-start;position:relative;overflow:hidden}
.product-card-v2::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--red);transform:scaleX(0);transition:transform .35s;transform-origin:left}
.product-card-v2:hover::before{transform:scaleX(1)}
.product-card-v2:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.product-card-v2 .p-icon{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.product-card-v2 h3{font-size:18px;font-weight:700;color:var(--blue);margin-bottom:8px}
.product-card-v2 p{font-size:13px;color:var(--gray);line-height:1.65;margin-bottom:16px;flex:1}
.product-card-v2 .p-link{font-size:13px;color:var(--red);font-weight:600;opacity:0;transform:translateX(-8px);transition:all .3s;display:flex;align-items:center;gap:4px}
.product-card-v2:hover .p-link{opacity:1;transform:translateX(0)}

/* ===== 五大引擎 Tab大卡片式 ===== */
.engine-tabs{display:flex;gap:0;background:#fff;border-radius:16px 16px 0 0;overflow:hidden;box-shadow:0 -2px 20px rgba(66,82,134,.08);position:relative;z-index:2}
.engine-tab{flex:1;padding:22px 16px 18px;text-align:center;cursor:pointer;transition:all .3s;border-bottom:3px solid transparent;position:relative}
.engine-tab .tab-num{font-size:12px;color:var(--gray);margin-bottom:4px;font-weight:600}
.engine-tab .tab-name{font-size:17px;font-weight:700;color:var(--gray);transition:color .3s}
.engine-tab.active{background:var(--blue);border-radius:14px 14px 0 0}
.engine-tab.active .tab-num,.engine-tab.active .tab-name{color:#fff}
.engine-tab:hover:not(.active){background:var(--bg)}
.engine-tab:hover:not(.active) .tab-name{color:var(--blue)}

.engine-display{background:#fff;border-radius:0 0 24px 24px;box-shadow:0 12px 48px rgba(66,82,134,.14);overflow:hidden;position:relative}
.engine-panel{display:none;grid-template-columns:1fr 1.15fr;gap:0;min-height:500px}
.engine-panel.active{display:grid;animation:fadeIn .45s ease}
.engine-panel-left{padding:52px 44px;display:flex;flex-direction:column;justify-content:center}
.engine-panel-right{background:linear-gradient(135deg,#F0F3FA 0%,#E4E9F5 100%);padding:44px 36px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.engine-panel-right::before{content:'';position:absolute;width:300px;height:300px;background:radial-gradient(circle,rgba(214,40,40,.06),transparent 70%);border-radius:50%;top:-100px;right:-80px}
.engine-eyebrow{font-size:11px;font-weight:700;letter-spacing:2.5px;color:var(--red);text-transform:uppercase;margin-bottom:18px}
.engine-panel-left h3{font-size:30px;font-weight:900;color:var(--blue);line-height:1.35;margin-bottom:18px}
.engine-panel-left > p{font-size:15px;color:#666;line-height:1.85;margin-bottom:28px}
.engine-checks{list-style:none;margin-bottom:28px}
.engine-checks li{font-size:14.5px;color:#444;padding:9px 0 9px 30px;position:relative;line-height:1.5}
.engine-checks li::before{content:'✓';position:absolute;left:0;width:20px;height:20px;background:rgba(45,138,78,.1);color:#2D8A4E;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;top:11px}
.engine-product-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.engine-product-tag{padding:7px 16px;background:var(--bg);border-radius:8px;font-size:13px;color:var(--blue);font-weight:600;border:1px solid var(--gray-light)}
.engine-detail-link{font-size:15px;color:var(--red);font-weight:700;display:inline-flex;align-items:center;gap:6px;cursor:pointer;transition:gap .25s;width:fit-content}
.engine-detail-link:hover{gap:12px}

/* 模拟系统界面 - 浏览器窗口 */
.mock-browser{background:#fff;border-radius:14px;box-shadow:0 24px 64px rgba(0,0,0,.18);overflow:hidden;width:100%;max-width:500px;position:relative;z-index:2}
.mock-bar{background:#F5F6FA;padding:11px 16px;display:flex;align-items:center;gap:7px;border-bottom:1px solid #ECEEF3}
.mock-dot{width:11px;height:11px;border-radius:50%}
.mock-dot.r{background:#FF5F57}.mock-dot.y{background:#FEBC2E}.mock-dot.g{background:#28C840}
.mock-title{font-size:12.5px;color:#888;margin-left:10px;font-weight:500}
.mock-body{padding:18px}
.mock-filter-row{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.mock-filter{padding:5px 12px;background:#F0F2F8;border-radius:6px;font-size:11.5px;color:#666;font-weight:500}
.mock-filter.active{background:var(--red);color:#fff}
.mock-table{width:100%;border-collapse:collapse}
.mock-table th{text-align:left;font-size:11px;color:#999;font-weight:600;padding:8px 6px;border-bottom:1px solid #eee}
.mock-table td{padding:10px 6px;font-size:12px;color:#444;border-bottom:1px solid #F5F5F5}
.mock-tag{display:inline-block;padding:3px 8px;border-radius:4px;font-size:10.5px;font-weight:600}
.mock-tag.blue{background:#E8F0FE;color:#425286}
.mock-tag.green{background:#E6F7EC;color:#2D8A4E}
.mock-tag.orange{background:#FFF3E0;color:#D4880F}
.mock-score{display:inline-block;width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,#FFE5E5,#FFD0D0);color:var(--red);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.mock-btn{padding:4px 10px;background:var(--blue);color:#fff;border-radius:5px;font-size:10.5px;font-weight:600;display:inline-block}
.mock-float{position:absolute;bottom:36px;right:24px;background:var(--blue);color:#fff;padding:12px 18px;border-radius:12px;box-shadow:0 8px 24px rgba(66,82,134,.4);z-index:3;max-width:200px}
.mock-float .mf-title{font-size:12px;font-weight:700;margin-bottom:3px}
.mock-float .mf-desc{font-size:11px;color:rgba(255,255,255,.75);line-height:1.4}

/* 内容创作台界面 */
.mock-content-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mock-content-card{background:#FAFBFD;border:1px solid #EEE;border-radius:8px;padding:10px}
.mock-content-card .mcc-title{font-size:12px;font-weight:700;color:#333;margin-bottom:4px}
.mock-content-card .mcc-meta{font-size:10px;color:#999;margin-bottom:6px}
.mock-content-card .mcc-status{display:inline-block;padding:2px 7px;border-radius:3px;font-size:9.5px;font-weight:600}
.mock-chart-bar{display:flex;align-items:flex-end;gap:6px;height:50px;margin-top:8px}
.mock-chart-bar div{flex:1;background:linear-gradient(180deg,var(--red),#FF8A8A);border-radius:3px 3px 0 0;min-height:8px}

/* 聊天界面 */
.mock-chat{display:flex;flex-direction:column;gap:8px}
.mock-msg{max-width:80%;padding:8px 12px;border-radius:10px;font-size:11.5px;line-height:1.5}
.mock-msg.left{background:#F0F2F8;color:#444;align-self:flex-start;border-bottom-left-radius:3px}
.mock-msg.right{background:var(--blue);color:#fff;align-self:flex-end;border-bottom-right-radius:3px}
.mock-chat-input{display:flex;gap:6px;margin-top:10px;padding-top:10px;border-top:1px solid #eee}
.mock-chat-input input{flex:1;padding:7px 10px;background:#F5F6FA;border:none;border-radius:6px;font-size:11px;outline:none}
.mock-chat-input button{padding:7px 14px;background:var(--red);color:#fff;border:none;border-radius:6px;font-size:11px;font-weight:600}

/* 商城界面 */
.mock-product-row{display:flex;gap:10px;padding:10px 0;border-bottom:1px solid #F5F5F5}
.mock-product-img{width:44px;height:44px;background:linear-gradient(135deg,#FFE5E5,#FFD0D0);border-radius:8px;flex-shrink:0}
.mock-product-info{flex:1}
.mock-product-info .mpi-name{font-size:12px;font-weight:700;color:#333}
.mock-product-info .mpi-price{font-size:12px;color:var(--red);font-weight:700}
.mock-product-info .mpi-sales{font-size:10px;color:#999}

/* 看板界面 */
.mock-kpi-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}
.mock-kpi{background:#FAFBFD;border-radius:8px;padding:12px;text-align:center}
.mock-kpi .mk-num{font-size:22px;font-weight:900;color:var(--red)}
.mock-kpi .mk-label{font-size:10px;color:#999;margin-top:2px}
.mock-task{display:flex;align-items:center;gap:8px;padding:8px 0;border-bottom:1px solid #F5F5F5}
.mock-task .mt-check{width:16px;height:16px;border-radius:4px;border:2px solid #ddd;flex-shrink:0}
.mock-task .mt-check.done{background:var(--red);border-color:var(--red);position:relative}
.mock-task .mt-check.done::after{content:'✓';color:#fff;font-size:10px;position:absolute;top:-1px;left:2px}
.mock-task .mt-text{font-size:11.5px;color:#444;flex:1}
.mock-task .mt-text.done{text-decoration:line-through;color:#aaa}

/* ===== 产品矩阵 - 左侧列表+右侧详情 ===== */
.pm-tabs{display:flex;justify-content:center;gap:8px;margin-bottom:32px;flex-wrap:wrap}
.pm-tab{padding:10px 22px;border-radius:24px;font-size:14px;font-weight:600;cursor:pointer;transition:all .25s;background:#fff;color:var(--gray);border:1.5px solid var(--gray-light);font-family:inherit}
.pm-tab.active{background:var(--red);color:#fff;border-color:var(--red);box-shadow:0 4px 14px rgba(214,40,40,.25)}
.pm-tab:hover:not(.active){border-color:var(--blue);color:var(--blue)}
.pm-display{background:#fff;border-radius:20px;box-shadow:0 8px 40px rgba(66,82,134,.1);overflow:hidden;display:grid;grid-template-columns:260px 1fr;min-height:480px}
.pm-list{background:var(--bg);padding:16px 10px;border-right:1px solid var(--gray-light);overflow-y:auto;max-height:520px}
.pm-item{padding:14px 16px;border-radius:10px;cursor:pointer;transition:all .2s;margin-bottom:6px;border:2px solid transparent}
.pm-item:hover{background:#fff}
.pm-item.active{background:#fff;box-shadow:var(--shadow);border-color:var(--red)}
.pm-item .pmi-name{font-size:14.5px;font-weight:700;color:var(--blue);margin-bottom:3px}
.pm-item .pmi-desc{font-size:11.5px;color:var(--gray);line-height:1.4}
.pm-detail{padding:32px 36px;display:none;overflow-y:auto;max-height:520px}
.pm-detail.active{display:block;animation:fadeIn .35s}
.pm-detail-top{display:flex;align-items:center;gap:14px;margin-bottom:18px;padding-bottom:18px;border-bottom:1px solid var(--gray-light)}
.pm-detail-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.pm-detail-top h3{font-size:22px;font-weight:900;color:var(--blue)}
.pm-detail-top .pmd-tag{padding:4px 10px;background:rgba(214,40,40,.08);color:var(--red);border-radius:6px;font-size:11px;font-weight:600;margin-left:auto}
.pm-detail-body{display:grid;grid-template-columns:1fr 1.1fr;gap:28px;align-items:start}
.pm-detail-text p{font-size:14px;color:#555;line-height:1.8;margin-bottom:16px}
.pm-detail-features{list-style:none;margin-bottom:20px}
.pm-detail-features li{font-size:13px;color:#444;padding:6px 0 6px 24px;position:relative;line-height:1.5}
.pm-detail-features li::before{content:'✓';position:absolute;left:0;width:16px;height:16px;background:rgba(45,138,78,.1);color:#2D8A4E;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;top:9px}
.pm-detail-cta{display:flex;gap:10px}
.pm-mockup-wrap{position:relative}
.pm-mockup{background:#fff;border-radius:12px;box-shadow:0 16px 48px rgba(0,0,0,.14);overflow:hidden}
.pm-mockup-bar{background:#F5F6FA;padding:9px 14px;display:flex;align-items:center;gap:6px;border-bottom:1px solid #eee}
.pm-mockup-body{padding:14px}
.pm-float{position:absolute;bottom:-12px;right:-12px;background:var(--blue);color:#fff;padding:10px 16px;border-radius:10px;box-shadow:0 6px 20px rgba(66,82,134,.35);z-index:2;max-width:180px}
.pm-float .pf-t{font-size:11px;font-weight:700;margin-bottom:2px}
.pm-float .pf-d{font-size:10px;color:rgba(255,255,255,.7);line-height:1.4}

/* ===== 11大产品矩阵 ===== */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.product-card{background:#fff;border-radius:14px;padding:28px 22px;box-shadow:var(--shadow);transition:all .3s;cursor:pointer;border:1px solid transparent}
.product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--red)}
.product-cat{font-size:11px;font-weight:600;color:var(--red);margin-bottom:10px;letter-spacing:1px}
.product-card h3{font-size:17px;font-weight:700;color:var(--blue);margin-bottom:8px}
.product-card p{font-size:13px;color:var(--gray);line-height:1.6;margin-bottom:14px}
.product-link{font-size:13px;color:var(--red);font-weight:600;display:flex;align-items:center;gap:4px}
.product-link::after{content:'→';transition:transform .2s}
.product-card:hover .product-link::after{transform:translateX(4px)}

/* ===== 核心产品推荐 ===== */
.feature-product{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:80px}
.feature-product:last-child{margin-bottom:0}
.feature-product.reverse{direction:rtl}
.feature-product.reverse > *{direction:ltr}
.feature-img{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-hover)}
.feature-img img{width:100%;height:360px;object-fit:cover}
.feature-img::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(66,82,134,.1),transparent)}
.feature-badge{position:absolute;top:16px;left:16px;background:var(--red);color:#fff;padding:6px 14px;border-radius:20px;font-size:12px;font-weight:600;z-index:2}
.feature-text h3{font-size:28px;font-weight:900;color:var(--blue);margin-bottom:14px}
.feature-text .tag{display:inline-block;padding:4px 12px;background:rgba(214,40,40,.08);color:var(--red);border-radius:6px;font-size:12px;font-weight:600;margin-bottom:14px}
.feature-text p{font-size:15px;color:#555;line-height:1.8;margin-bottom:18px}
.feature-list{list-style:none;margin-bottom:24px}
.feature-list li{font-size:14px;color:#444;padding:6px 0 6px 24px;position:relative}
.feature-list li::before{content:'✓';position:absolute;left:0;color:var(--red);font-weight:700}

/* ===== 行业方案 ===== */
.industry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.industry-card{position:relative;border-radius:14px;overflow:hidden;cursor:pointer;height:280px;box-shadow:var(--shadow)}
.industry-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.industry-card:hover img{transform:scale(1.08)}
.industry-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(30,40,80,.9) 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:24px}
.industry-card h3{font-size:20px;font-weight:700;color:#fff;margin-bottom:6px}
.industry-card p{font-size:13px;color:rgba(255,255,255,.8);line-height:1.5}
.industry-more{margin-top:40px;text-align:center}

/* ===== 数据成果 ===== */
.results{background:linear-gradient(135deg,var(--blue-dark),var(--blue));padding:90px 0;position:relative;overflow:hidden}
.results::before{content:'';position:absolute;top:-50%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(214,40,40,.15),transparent 70%);border-radius:50%}
.results-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center;position:relative;z-index:1}
.result-item .num{font-size:52px;font-weight:900;color:#fff;line-height:1}
.result-item .num span{font-size:24px;color:#FFD700}
.result-item .label{font-size:15px;color:rgba(255,255,255,.75);margin-top:10px}
.result-item .sub{font-size:12px;color:rgba(255,255,255,.5);margin-top:4px}

/* ===== 客户案例 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:var(--shadow);transition:all .3s}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.case-img{height:180px;overflow:hidden;position:relative}
.case-img img{width:100%;height:100%;object-fit:cover}
.case-cat{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.95);color:var(--red);padding:4px 12px;border-radius:6px;font-size:12px;font-weight:600}
.case-body{padding:24px}
.case-body h3{font-size:17px;font-weight:700;color:var(--blue);margin-bottom:10px}
.case-result{display:flex;gap:16px;margin:14px 0;padding:14px 0;border-top:1px solid var(--gray-light);border-bottom:1px solid var(--gray-light)}
.case-result .r{flex:1}
.case-result .r .n{font-size:22px;font-weight:900;color:var(--red)}
.case-result .r .l{font-size:11px;color:var(--gray)}
.case-body p{font-size:13px;color:var(--gray);line-height:1.6}

/* ===== 为什么选择 ===== */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.why-card{background:#fff;border-radius:16px;padding:36px 28px;box-shadow:var(--shadow);text-align:center;transition:all .3s}
.why-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.why-icon{width:70px;height:70px;margin:0 auto 20px;border-radius:50%;background:linear-gradient(135deg,var(--red),var(--red-dark));display:flex;align-items:center;justify-content:center;font-size:30px;color:#fff}
.why-card h3{font-size:20px;font-weight:700;color:var(--blue);margin-bottom:12px}
.why-card p{font-size:14px;color:var(--gray);line-height:1.8}

/* ===== CTA ===== */
.cta-section{background:#F7F8FC;padding:48px 0;position:relative;overflow:hidden;border-top:1px solid #E8EAF0}
.cta-section::before{content:'';position:absolute;bottom:-30%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(214,40,40,.2),transparent 70%);border-radius:50%}
.cta-inner{text-align:center;position:relative;z-index:1;max-width:700px;margin:0 auto}
.cta-inner h2{font-size:28px;font-weight:900;color:#425286;margin-bottom:10px}
.cta-inner p{font-size:14px;color:#666;margin-bottom:20px;line-height:1.7}
.cta-form{display:flex;gap:10px;max-width:520px;margin:0 auto;flex-wrap:wrap;justify-content:center}
.cta-form input{flex:1;min-width:180px;padding:11px 14px;border-radius:8px;border:1px solid #ddd;font-size:13px;font-family:inherit;outline:none;background:#fff}
.cta-form input:focus{box-shadow:0 0 0 3px rgba(66,82,134,.15)}
.case-num{color:#D62828;font-weight:700}

/* ===== 页脚 ===== */
.footer{background:linear-gradient(135deg,#1A1F35 0%,#2D3561 50%,#425286 100%);color:rgba(255,255,255,.7);padding:40px 0 20px;position:relative;overflow:hidden}
.footer::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(214,40,40,.5),transparent)}
.footer::after{content:'';position:absolute;bottom:-50%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(214,40,40,.15),transparent 70%);border-radius:50%;pointer-events:none}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:32px;margin-bottom:30px}
.footer-brand h3{color:#fff;font-size:18px;font-weight:900;margin-bottom:10px}
.footer-brand p{font-size:12px;line-height:1.7;margin-bottom:0}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:12px}
.footer-col a{display:block;font-size:12px;padding:3px 0;transition:color .2s}
.footer-col a:hover{color:var(--red)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:16px;text-align:center;font-size:12px}

/* ===== Toast ===== */
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(100px);background:var(--blue);color:#fff;padding:14px 28px;border-radius:10px;font-size:14px;box-shadow:0 8px 30px rgba(0,0,0,.3);z-index:9999;transition:transform .35s;opacity:0}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}

/* ===== 滚动动画 ===== */
.fade-up{opacity:0;transform:translateY(30px);transition:all .7s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .hero-content{grid-template-columns:1fr;gap:40px}
  .hero-left h1{font-size:38px}
  .engine-grid{grid-template-columns:repeat(3,1fr)}
  .product-grid{grid-template-columns:repeat(3,1fr)}
  .industry-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:768px){
  .nav-links{display:none}
  .mobile-menu-btn{display:block}
  .hero-left h1{font-size:30px}
  .hero-left p{font-size:15px}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .engine-grid{grid-template-columns:repeat(2,1fr)}
  .engine-flow{flex-wrap:wrap;justify-content:center;gap:8px}
  .engine-step{max-width:130px;padding:16px 6px}
  .engine-step-icon{width:56px;height:56px}
  .engine-step-num{font-size:28px}
  .engine-connector{display:none}
  .product-panel.active{grid-template-columns:1fr}
  .product-tabs{gap:6px}
  .product-tab{padding:8px 14px;font-size:12px}
  .engine-tabs{flex-wrap:wrap}
  .engine-tab{padding:14px 8px;min-width:80px}
  .engine-tab .tab-name{font-size:13px}
  .engine-panel.active{grid-template-columns:1fr}
  .engine-panel-left{padding:32px 24px}
  .engine-panel-left h3{font-size:22px}
  .engine-panel-right{padding:28px 20px;min-height:360px}
  .mock-float{display:none}
  .pm-display{grid-template-columns:1fr}
  .pm-list{max-height:200px;display:flex;gap:8px;overflow-x:auto;border-right:none;border-bottom:1px solid var(--gray-light);padding:12px}
  .pm-item{min-width:140px;margin-bottom:0}
  .pm-detail{padding:24px 20px;max-height:none}
  .pm-detail-body{grid-template-columns:1fr}
  .pm-tabs{gap:6px}
  .pm-tab{padding:8px 14px;font-size:12px}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .feature-product{grid-template-columns:1fr;gap:30px}
  .feature-product.reverse{direction:ltr}
  .results-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:1fr}
  .why-grid{grid-template-columns:1fr}
  .industry-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:60px 0}
  .section-title{font-size:28px}
  .cta-inner h2{font-size:28px}
}

/* ===== 模态框 ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;align-items:center;justify-content:center;z-index:1000}
.modal-overlay.show{display:flex}
.modal-box{background:#fff;border-radius:16px;max-width:480px;width:90%;overflow:hidden;position:relative;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal-close{position:absolute;top:12px;right:12px;width:32px;height:32px;border-radius:50%;background:rgba(0,0,0,.5);color:#fff;border:none;font-size:18px;cursor:pointer;z-index:1}
.modal-poster{width:100%;aspect-ratio:16/9;overflow:hidden}
.modal-poster img{width:100%;height:100%;object-fit:cover}
.modal-info{padding:24px}
.modal-info h3{font-size:22px;font-weight:900;color:#425286;margin-bottom:8px}
.modal-info p{font-size:14px;color:#666;line-height:1.7;margin-bottom:16px}
.modal-price{font-size:32px;font-weight:900;color:#D62828;margin-bottom:20px}
.modal-price span:last-child{font-size:14px;color:#888;font-weight:400;margin-left:4px}

/* ===== 适用场景图文 ===== */
.pd-scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pd-scenario-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(66,82,134,.08);transition:all .3s}
.pd-scenario-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(66,82,134,.15)}
.pd-scenario-card .sc-img{aspect-ratio:16/10;overflow:hidden}
.pd-scenario-card .sc-img img{width:100%;height:100%;object-fit:cover}
.pd-scenario-card .sc-text{padding:14px 16px}
.pd-scenario-card .sc-title{font-size:15px;font-weight:700;color:#425286;margin-bottom:4px}.pd-scenario-card .sc-desc{font-size:12px;color:#888;line-height:1.5}

/* ===== 客户成果图文 ===== */
.pd-case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pd-case-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(66,82,134,.08);transition:all .3s;border:none !important}
.pd-case-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(66,82,134,.15)}
.pd-case-card .case-img{aspect-ratio:4/3;overflow:hidden}
.pd-case-card .case-img img{width:100%;height:100%;object-fit:cover}
.pd-case-card .case-text{padding:18px 14px;text-align:center}
.pd-case-card .case-name{font-size:17px;font-weight:700;color:#425286;margin-bottom:8px}
.pd-case-card .case-result{font-size:14px;color:#555;line-height:1.6;font-weight:500}

.dropdown-group:hover{background:#F7F8FC}
.dropdown-group:hover h5{color:#425286}
/* ===== 服务支持页 ===== */
.support-nav{background:#fff;border-bottom:1px solid #eee;position:sticky;top:0;z-index:100;box-shadow:0 2px 12px rgba(0,0,0,.05)}
.support-nav-inner{display:flex;gap:0;max-width:1200px;margin:0 auto;padding:0 24px}
.support-nav-item{flex:1;padding:18px 20px;text-align:center;border-bottom:3px solid transparent;transition:all .25s;text-decoration:none}
.support-nav-item:hover{background:#F7F8FC;border-bottom-color:#425286}
.support-nav-item .sn-title{display:block;font-size:15px;font-weight:700;color:#425286;margin-bottom:4px}
.support-nav-item .sn-desc{display:block;font-size:12px;color:#888}
.service-process{display:flex;gap:16px;margin-bottom:40px;flex-wrap:wrap}
.service-step{flex:1;min-width:180px;background:#fff;border-radius:12px;padding:24px;box-shadow:0 2px 12px rgba(66,82,134,.08);text-align:center;position:relative}
.service-step .step-num{font-size:28px;font-weight:900;color:rgba(66,82,134,.15);margin-bottom:8px}
.service-step h4{font-size:15px;font-weight:700;color:#425286;margin-bottom:8px}
.service-step p{font-size:12px;color:#666;line-height:1.6}
.service-standards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.service-standard{background:#fff;border-radius:10px;padding:20px;text-align:center;border-left:3px solid #D62828}
.service-standard h4{font-size:14px;font-weight:700;color:#425286;margin-bottom:6px}
.service-standard p{font-size:12px;color:#666;line-height:1.5}
.hot-resources{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.hot-res-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 2px 12px rgba(66,82,134,.08);position:relative;transition:all .3s}
.hot-res-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(66,82,134,.15)}
.hr-tag{position:absolute;top:16px;right:16px;color:#fff;font-size:11px;font-weight:600;padding:3px 10px;border-radius:10px}
.hr-type{display:inline-block;font-size:11px;color:#888;background:#f5f5f5;padding:3px 10px;border-radius:10px;margin-bottom:12px}
.hot-res-card h4{font-size:15px;font-weight:700;color:#425286;margin-bottom:8px;padding-right:50px}
.hot-res-card p{font-size:13px;color:#666;line-height:1.6;margin-bottom:14px}
.hr-link{font-size:13px;color:#425286;font-weight:600;text-decoration:none}
.hr-link:hover{color:#D62828}
.doc-list-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.doc-cat{background:#fff;border-radius:12px;padding:24px;box-shadow:0 2px 12px rgba(66,82,134,.08)}
.doc-cat h4{font-size:16px;font-weight:700;color:#425286;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid #f0f0f0}
.doc-cat ul{list-style:none}
.doc-cat ul li{padding:8px 0;border-bottom:1px solid #f8f8f8}
.doc-cat ul li a{font-size:13px;color:#555;text-decoration:none;display:flex;align-items:center;gap:8px}
.doc-cat ul li a::before{content:'📄';font-size:12px}
.doc-cat ul li a:hover{color:#425286}
.video-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-item{display:flex;flex-direction:column;gap:0;background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(66,82,134,.08);transition:all .3s}
.video-item:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(66,82,134,.15)}
.video-thumb{width:100%;height:220px;background:linear-gradient(135deg,#425286,#34406A);position:relative;display:flex;align-items:center;justify-content:center}
.play-btn{width:64px;height:64px;background:rgba(255,255,255,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#425286;font-size:24px;padding-left:6px}
.duration{position:absolute;bottom:12px;right:12px;background:rgba(0,0,0,.6);color:#fff;font-size:13px;padding:4px 10px;border-radius:4px}
.video-info{padding:24px}
.video-level{display:inline-block;font-size:12px;color:#D62828;background:rgba(214,40,40,.08);padding:4px 12px;border-radius:8px;margin-bottom:10px}
.video-info h4{font-size:20px;font-weight:700;color:#425286;margin-bottom:8px}
.video-info p{font-size:15px;color:#666;line-height:1.6}
.whitepaper-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.whitepaper-item{display:flex;gap:16px;background:#fff;border-radius:12px;padding:20px;box-shadow:0 2px 12px rgba(66,82,134,.08);transition:all .3s}
.whitepaper-item:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(66,82,134,.15)}
.wp-cover{width:80px;height:100px;background:linear-gradient(135deg,#D62828,#B81E1E);border-radius:6px;position:relative;flex-shrink:0;display:flex;align-items:flex-end;justify-content:center;padding-bottom:8px}
.wp-pages{color:#fff;font-size:11px;font-weight:600}
.wp-info{flex:1}
.wp-industry{display:inline-block;font-size:11px;color:#425286;background:rgba(66,82,134,.08);padding:2px 8px;border-radius:8px;margin-bottom:6px}
.wp-info h4{font-size:14px;font-weight:700;color:#425286;margin-bottom:6px;line-height:1.4}
.wp-info p{font-size:12px;color:#666;line-height:1.5;margin-bottom:10px}
.wp-download{font-size:12px;color:#D62828;font-weight:600;text-decoration:none}
.wp-download:hover{text-decoration:underline}
.faq-list{max-width:900px;margin:0 auto}
@media(max-width:900px){
  .support-nav-inner{flex-wrap:wrap}
  .support-nav-item{flex:1 1 50%}
  .service-standards{grid-template-columns:repeat(2,1fr)}
  .hot-resources,.doc-list-grid,.video-list,.whitepaper-list{grid-template-columns:1fr}
  .video-item,.whitepaper-item{flex-direction:column}
  .video-thumb{width:100%;height:240px}
}