/* ============ 设计变量 ============ */
:root{
  --primary:#1A3A5C;
  --primary-dark:#132B45;
  --primary-deeper:#0F2237;
  --secondary:#2B7BE4;
  --secondary-dark:#1F66C4;
  --text-main:#2C3E50;
  --text-sub:#6B7A8D;
  --bg-light:#F5F7FA;
  --bg-white:#FFFFFF;
  --border:#E4E8EE;
  --radius:10px;
  --shadow:0 6px 24px rgba(26,58,92,.08);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--text-main);line-height:1.7;background:var(--bg-white);-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;font-size:1rem}
section[id]{scroll-margin-top:84px}
.container{width:min(1200px,92%);margin-inline:auto}
.no-scroll{overflow:hidden}

/* ============ 通用按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:8px;font-weight:500;letter-spacing:.02em;transition:background .25s,color .25s,border-color .25s,transform .15s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--secondary);color:#fff;border:1px solid var(--secondary)}
.btn-primary:hover{background:var(--secondary-dark);border-color:var(--secondary-dark)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-outline{background:transparent;color:var(--secondary);border:1px solid var(--secondary)}
.btn-outline:hover{background:var(--secondary);color:#fff}
.btn-lg{padding:14px 34px;font-size:1.05rem}
.btn-sm{padding:9px 20px;font-size:.92rem}

/* ============ 顶部导航 ============ */
.site-header{position:fixed;inset:0 0 auto 0;z-index:100;background:rgba(26,58,92,.55);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:background .3s,box-shadow .3s}
.site-header.scrolled{background:var(--bg-white);box-shadow:0 2px 14px rgba(26,58,92,.10)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.logo{display:flex;align-items:center}
.logo-img{height:44px;width:auto;display:block}
.main-nav ul{display:flex;gap:6px}
.main-nav a{display:block;padding:8px 14px;font-size:.95rem;color:rgba(255,255,255,.88);border-radius:6px;transition:color .2s,background .2s}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.10)}
.main-nav a.active{color:#fff;background:rgba(255,255,255,.16)}
.site-header.scrolled .main-nav a{color:var(--text-main)}
.site-header.scrolled .main-nav a:hover{color:var(--secondary);background:var(--bg-light)}
.site-header.scrolled .main-nav a.active{color:var(--secondary);background:var(--bg-light)}
.header-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:8px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:20px;height:2px;background:rgba(255,255,255,.9);border-radius:2px;transition:transform .25s,opacity .25s}
.site-header.scrolled .nav-toggle span{background:var(--primary)}
.site-header.menu-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header.menu-open .nav-toggle span:nth-child(2){opacity:0}
.site-header.menu-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 首屏 Banner ============ */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:130px 0 90px;background:linear-gradient(150deg,#1E4468 0%,var(--primary) 18%,var(--primary-dark) 52%,var(--primary-deeper) 100%);background-size:170% 170%;color:#fff;overflow:hidden;animation:hero-flow 12s ease-in-out infinite alternate}
.hero-bg{position:absolute;inset:0;pointer-events:none;opacity:.9}
/* ---- 首屏动态背景:渐变流动 + 光晕漂移 + 网格平移 + 圆点浮动 ---- */
@keyframes hero-flow{from{background-position:0% 0%}to{background-position:100% 100%}}
.hero-glow{position:absolute;border-radius:50%;filter:blur(72px);pointer-events:none;will-change:transform}
.hero-glow.g1{width:540px;height:540px;left:-150px;top:-140px;background:radial-gradient(circle,rgba(43,123,228,.5),transparent 70%);animation:glow1 13s ease-in-out infinite alternate}
.hero-glow.g2{width:660px;height:660px;right:-200px;bottom:-220px;background:radial-gradient(circle,rgba(111,176,245,.38),transparent 70%);animation:glow2 17s ease-in-out infinite alternate}
.hero-glow.g3{width:380px;height:380px;left:46%;top:-180px;background:radial-gradient(circle,rgba(82,196,26,.22),transparent 70%);animation:glow3 14s ease-in-out infinite alternate}
@keyframes glow1{to{transform:translate(320px,260px) scale(1.42)}}
@keyframes glow2{to{transform:translate(-340px,-200px) scale(1.34)}}
@keyframes glow3{to{transform:translate(-220px,280px) scale(1.5)}}
.hb-grid{animation:hb-grid-pan 18s linear infinite}
@keyframes hb-grid-pan{from{transform:translate(0,0)}to{transform:translate(56px,56px)}}
.hb-orb{will-change:transform}
.hb-orb1{animation:hb-float1 9s ease-in-out infinite alternate}
.hb-orb2{animation:hb-float2 11s ease-in-out infinite alternate}
@keyframes hb-float1{from{transform:translate(0,0) scale(1)}to{transform:translate(-150px,130px) scale(1.12)}}
@keyframes hb-float2{from{transform:translate(0,0) scale(1)}to{transform:translate(160px,-90px) scale(1.18)}}
.hb-lines{animation:hb-drift 7s ease-in-out infinite alternate}
@keyframes hb-drift{from{transform:translate(0,0)}to{transform:translate(-36px,-52px)}}
@media (prefers-reduced-motion:reduce){
  .hero,.hero-glow,.hb-grid,.hb-orb,.hb-lines{animation:none}
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border:1px solid rgba(255,255,255,.28);border-radius:999px;font-size:.85rem;color:#cfe3ff;margin-bottom:22px;letter-spacing:.08em}
.hero-tag::before{content:"";width:8px;height:8px;border-radius:50%;background:#52c41a;box-shadow:0 0 0 3px rgba(82,196,26,.25)}
.hero h1{font-size:clamp(2rem,4.6vw,3.1rem);line-height:1.25;font-weight:600;letter-spacing:.01em}
.hero h1 em{font-style:normal;color:#6fb0f5}
.hero-sub{margin:20px 0 34px;font-size:1.08rem;color:rgba(255,255,255,.82);max-width:560px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:0;margin-top:52px;border-top:1px solid rgba(255,255,255,.16);padding-top:26px;flex-wrap:wrap}
.hero-stats li{padding:0 28px;border-right:1px solid rgba(255,255,255,.16)}
.hero-stats li:first-child{padding-left:0}
.hero-stats li:last-child{border-right:none}
.hero-stats strong{display:block;font-size:1.5rem;font-weight:600;color:#6fb0f5}
.hero-stats span{font-size:.85rem;color:rgba(255,255,255,.7)}

/* 首屏右侧:系统示意卡 */
.hero-visual{position:relative}
.hv-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:14px;backdrop-filter:blur(4px)}
.hv-card-main{padding:18px}
.hv-head{display:flex;align-items:center;gap:6px;margin-bottom:16px}
.hv-head i{width:9px;height:9px;border-radius:50%;background:#ff5f57}
.hv-head i:nth-child(2){background:#febc2e}
.hv-head i:nth-child(3){background:#28c840}
.hv-head span{margin-left:8px;font-size:.78rem;color:rgba(255,255,255,.6);letter-spacing:.05em}
.hv-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px}
.hv-stats div{background:rgba(255,255,255,.08);border-radius:8px;padding:10px 12px}
.hv-stats strong{display:block;font-size:1.3rem;color:#fff}
.hv-stats span{font-size:.72rem;color:rgba(255,255,255,.6)}
.hv-bar-row{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.hv-bar-row span{font-size:.76rem;color:rgba(255,255,255,.72);width:70px;flex:none}
.hv-bar-row .track{flex:1;height:8px;background:rgba(255,255,255,.12);border-radius:4px;overflow:hidden}
.hv-bar-row .track i{display:block;height:100%;width:var(--w,60%);border-radius:4px;background:linear-gradient(90deg,var(--secondary),#6fb0f5)}
.hv-card-float{position:absolute;right:-18px;bottom:-26px;display:flex;align-items:center;gap:12px;padding:14px 18px;background:rgba(19,43,69,.92);box-shadow:0 14px 34px rgba(0,0,0,.30);animation:floaty 3.6s ease-in-out infinite}
.hv-card-float .f-ic{width:38px;height:38px;border-radius:50%;background:var(--secondary);display:flex;align-items:center;justify-content:center;flex:none;color:#fff}
.hv-card-float strong{display:block;font-size:.92rem;color:#fff}
.hv-card-float span{font-size:.74rem;color:rgba(255,255,255,.6)}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ============ 客户 Logo 墙 ============ */
.clients{padding:44px 0;background:var(--bg-white);border-bottom:1px solid var(--border)}
.clients-title{text-align:center;font-size:.92rem;color:var(--text-sub);margin-bottom:26px;letter-spacing:.06em}
.clients-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.clients-grid div{display:flex;align-items:center;justify-content:center;height:64px;border:1px solid var(--border);border-radius:var(--radius);color:#9AA7B8;font-weight:600;font-size:.95rem;letter-spacing:.04em;background:var(--bg-light);transition:color .25s,border-color .25s,transform .25s;cursor:default}
.clients-grid div:hover{color:var(--secondary);border-color:#bcd6f5;transform:translateY(-2px)}

/* ============ 通用区块 ============ */
.section{padding:96px 0}
.section.alt{background:var(--bg-light)}
.section-head{text-align:center;max-width:720px;margin:0 auto 58px}
.section-eyebrow{display:inline-block;font-size:.82rem;letter-spacing:.22em;color:var(--secondary);font-weight:500;margin-bottom:12px}
.section-head h2{font-size:clamp(1.6rem,3vw,2.15rem);font-weight:600;color:var(--primary);line-height:1.35}
.section-head .section-desc{margin-top:14px;color:var(--text-sub);font-size:1.02rem}
.section-head.light h2{color:#fff}
.section-head.light .section-desc{color:rgba(255,255,255,.72)}

/* ============ 核心产品 Tab ============ */
.product-tabs{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:44px}
.tab-btn{padding:11px 26px;border-radius:999px;border:1px solid var(--border);background:var(--bg-white);color:var(--text-main);font-size:.98rem;font-weight:500;transition:all .25s}
.tab-btn:hover{border-color:var(--secondary);color:var(--secondary)}
.tab-btn.active{background:var(--secondary);border-color:var(--secondary);color:#fff;box-shadow:0 6px 16px rgba(43,123,228,.30)}
.tab-panels{position:relative}
.tab-panel{display:none;grid-template-columns:1fr 1fr;gap:52px;align-items:center;background:var(--bg-white);border:1px solid var(--border);border-radius:16px;padding:48px;box-shadow:var(--shadow)}
.tab-panel.active{display:grid;animation:fadeUp .5s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.panel-copy h3{font-size:1.5rem;color:var(--primary);margin-bottom:14px;font-weight:600}
.panel-copy p{color:var(--text-sub);margin-bottom:22px}
.panel-list li{display:flex;align-items:flex-start;gap:10px;padding:9px 0;color:var(--text-main);font-size:.97rem}
.panel-list li svg{flex:none;margin-top:3px;color:var(--secondary)}
.panel-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;color:var(--secondary);font-weight:500;font-size:.96rem}
.panel-more:hover{color:var(--secondary-dark)}

/* 界面示意(纯 CSS 模拟 LIMS 截图) */
.screen{background:linear-gradient(160deg,#1A3A5C,#132B45);border-radius:12px;padding:14px;box-shadow:0 18px 40px rgba(26,58,92,.28);color:#fff}
.screen-bar{display:flex;align-items:center;gap:6px;padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.14);margin-bottom:12px}
.screen-bar i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.35)}
.screen-bar span{margin-left:8px;font-size:.74rem;letter-spacing:.06em;color:rgba(255,255,255,.65)}
.screen-grid{display:grid;grid-template-columns:64px 1fr;gap:12px}
.screen-side{display:flex;flex-direction:column;gap:8px}
.screen-side i{height:10px;border-radius:5px;background:rgba(255,255,255,.16)}
.screen-side i.on{background:var(--secondary)}
.screen-main{display:flex;flex-direction:column;gap:8px;overflow:hidden}
.screen-row{display:grid;grid-template-columns:1fr 1.6fr auto;align-items:center;gap:10px;background:rgba(255,255,255,.08);border-radius:8px;padding:8px 12px}
.screen-row b{font-size:.76rem;font-weight:500}
.screen-row span{font-size:.72rem;color:rgba(255,255,255,.62)}
.screen-row em{font-size:.68rem;font-style:normal;padding:3px 9px;border-radius:999px;background:rgba(43,123,228,.9)}
.screen-row em.ok{background:rgba(82,196,26,.85)}
.screen-row em.warn{background:rgba(250,173,20,.9)}
/* 业务概况超过 3 条:固定 3 条高度窗口,内容双份向上无缝滚动(hover 暂停) */
.screen-rows .screen-row{margin-top:8px}
.screen-rows.roll{overflow:hidden;-webkit-mask-image:linear-gradient(transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%);mask-image:linear-gradient(transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%)}
.screen-rows-move{animation:sol-roll 10s linear infinite}
.screen:hover .screen-rows-move{animation-play-state:paused}
@keyframes sol-roll{from{transform:translateY(0)}to{transform:translateY(-50%)}}
.map-clean{position:relative;max-width:960px;margin:20px auto 0;border-radius:12px;overflow:hidden;border:1px solid #E4E8EE;box-shadow:0 6px 24px rgba(26,58,92,.08);background:#fff}
.map-clean img{display:block;width:100%;height:auto}
.map-credit{position:absolute;right:10px;top:8px;font-size:.68rem;color:#fff;background:rgba(15,34,55,.45);padding:2px 9px;border-radius:999px;pointer-events:none}
.map-clean-bar{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:13px 20px;background:#fff;border-top:1px solid #E4E8EE}
.mc-loc{display:inline-flex;align-items:center;gap:8px;font-size:.9rem;color:var(--text-main);text-align:left}
.mc-loc svg{color:var(--secondary);flex:none}
@media (max-width:640px){.map-clean-bar{justify-content:center;text-align:center}}
/* 方案描述超长截断与展开详情 */
#solutionCards .mod-card .sub.clamp{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sub-toggle{margin-top:2px;font-size:.8rem;color:var(--secondary);background:none;border:none;padding:0;cursor:pointer;display:inline-flex;align-items:center;gap:2px}
.sub-toggle:hover{text-decoration:underline}
.step-track{display:flex;align-items:center;gap:6px;margin-bottom:10px}
.step-track i{flex:1;height:6px;border-radius:3px;background:rgba(255,255,255,.14)}
.step-track i.done{background:var(--secondary)}
.step-track i.cur{background:#6fb0f5}
.instr-card{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.08);border-radius:8px;padding:10px 12px}
.instr-card b{font-size:.76rem;font-weight:500}
.instr-card .sig{display:flex;align-items:center;gap:6px;font-size:.7rem;color:rgba(255,255,255,.65)}
.sig-dot{width:7px;height:7px;border-radius:50%;background:#52c41a;animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.rpt-card{background:rgba(255,255,255,.08);border-radius:8px;padding:10px 12px;display:flex;justify-content:space-between;align-items:center}
.rpt-card b{font-size:.76rem;font-weight:500}
.rpt-card span{font-size:.7rem;color:rgba(255,255,255,.62)}

/* ============ 解决方案 ============ */
.solutions-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.sol-card{background:var(--bg-white);border:1px solid var(--border);border-radius:16px;padding:30px 26px;transition:transform .25s,box-shadow .25s,border-color .25s;display:flex;flex-direction:column}
.sol-card:hover{transform:translateY(-6px);box-shadow:0 16px 36px rgba(26,58,92,.12);border-color:#bcd6f5}
.sol-icon{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,var(--secondary),#6fb0f5);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:20px}
.sol-card h3{font-size:1.12rem;color:var(--primary);margin-bottom:10px;font-weight:600}
.sol-card p{font-size:.9rem;color:var(--text-sub);flex:1}
.sol-desc{font-size:.9rem;color:var(--text-sub);flex:1}
.sol-desc p{margin:0 0 8px}
.sol-tags{display:flex;flex-wrap:wrap;gap:7px;margin:16px 0 18px}
.sol-tags span{font-size:.74rem;color:var(--secondary);background:#EAF2FD;border-radius:999px;padding:4px 11px}
.sol-link{color:var(--secondary);font-size:.92rem;font-weight:500;display:inline-flex;align-items:center;gap:6px}
.sol-link:hover{color:var(--secondary-dark)}

/* ============ 核心价值 ============ */
.values{padding:96px 0;background:linear-gradient(150deg,var(--primary) 0%,var(--primary-dark) 60%,var(--primary-deeper) 100%);color:#fff;position:relative;overflow:hidden}
.values::before{content:"";position:absolute;right:-140px;top:-140px;width:420px;height:420px;border-radius:50%;background:rgba(43,123,228,.18);pointer-events:none}
.values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:2}
.value-item{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:16px;padding:36px 26px;text-align:center;backdrop-filter:blur(4px)}
.value-num{font-size:2.9rem;font-weight:600;color:#6fb0f5;line-height:1}
.value-unit{font-size:1.6rem;font-weight:600;color:#6fb0f5;margin-left:2px}
.value-badge{display:inline-block;font-size:1.15rem;font-weight:600;color:#6fb0f5;border:1px solid rgba(111,176,245,.5);border-radius:8px;padding:12px 18px;letter-spacing:.06em}
.value-item p{margin-top:14px;color:rgba(255,255,255,.78);font-size:.95rem}
.value-icon{width:44px;height:44px;margin:0 auto 16px;color:#6fb0f5}

/* ============ 成功案例 ============ */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:var(--bg-white);border:1px solid var(--border);border-radius:16px;padding:32px 28px;transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.case-card:hover{transform:translateY(-6px);box-shadow:0 16px 36px rgba(26,58,92,.12)}
.case-head{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.case-avatar{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--secondary),#6fb0f5);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1.05rem;flex:none}
.case-head h3{font-size:1.05rem;color:var(--primary);font-weight:600}
.case-head span{font-size:.8rem;color:var(--text-sub)}
.case-body{font-size:.92rem;color:var(--text-sub);flex:1}
.case-body strong{color:var(--text-main);font-weight:500}
.case-metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px;padding-top:20px;border-top:1px dashed var(--border)}
.case-metrics div{background:var(--bg-light);border-radius:10px;padding:12px;text-align:center}
.case-metrics strong{display:block;font-size:1.3rem;color:var(--secondary);font-weight:600}
.case-metrics span{font-size:.76rem;color:var(--text-sub)}

/* ============ 关于我们 ============ */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start}
.about-copy h3{font-size:1.35rem;color:var(--primary);margin-bottom:18px;font-weight:600}
.about-copy p{color:var(--text-sub);margin-bottom:16px;font-size:.97rem}
.about-facts{margin:22px 0 0;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.about-facts>div{display:grid;grid-template-columns:96px 1fr;gap:12px;padding:11px 16px;border-top:1px solid var(--border);font-size:.88rem}
.about-facts>div:first-child{border-top:0}
.about-facts>div:nth-child(odd){background:var(--bg-light)}
.about-facts dt{color:var(--text-sub);margin:0}
.about-facts dd{margin:0;color:var(--text-main)}
.about-features{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}
.about-features li{background:var(--bg-white);border:1px solid var(--border);border-radius:12px;padding:16px 14px;text-align:center}
.about-features svg{color:var(--secondary);margin:0 auto 10px}
.about-features span{font-size:.85rem;color:var(--text-main);font-weight:500;display:block}
.about-features small{font-size:.74rem;color:var(--text-sub);display:block;margin-top:4px;line-height:1.5}
.cert-card{background:var(--bg-white);border:1px solid var(--border);border-radius:16px;padding:30px;box-shadow:var(--shadow)}
.cert-card h4{font-size:1.05rem;color:var(--primary);margin-bottom:20px;font-weight:600;display:flex;align-items:center;gap:10px}
.cert-list li{display:flex;align-items:center;gap:12px;padding:13px 0;border-bottom:1px dashed var(--border)}
.cert-list li:last-child{border-bottom:none}
.cert-ic{width:40px;height:40px;border-radius:10px;background:#EAF2FD;color:var(--secondary);display:flex;align-items:center;justify-content:center;flex:none}
.cert-list strong{display:block;font-size:.94rem;color:var(--text-main);font-weight:500}
.cert-list span{font-size:.78rem;color:var(--text-sub)}

/* ============ 新闻动态 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--bg-white);border:1px solid var(--border);border-radius:16px;overflow:hidden;transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:0 16px 36px rgba(26,58,92,.12)}
.news-cover{height:150px;background:linear-gradient(140deg,#EAF2FD,#D8E9FB);display:flex;align-items:center;justify-content:center;color:var(--secondary);font-size:1.05rem;font-weight:500;letter-spacing:.04em}
.news-cover img{width:100%;height:100%;object-fit:cover}
.news-body{padding:24px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.news-date{background:var(--primary);color:#fff;border-radius:8px;padding:6px 10px;text-align:center;line-height:1.15;flex:none}
.news-date strong{display:block;font-size:1.05rem}
.news-date span{font-size:.64rem;opacity:.8}
.news-meta .cat{font-size:.78rem;color:var(--secondary);font-weight:500}
.news-body h3{font-size:1.02rem;color:var(--primary);line-height:1.55;margin-bottom:10px;font-weight:600}
.news-body p{font-size:.86rem;color:var(--text-sub);flex:1}
.news-more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;color:var(--secondary);font-size:.88rem;font-weight:500}

/* ============ 联系 / 试用表单 ============ */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}
.contact-info h3{font-size:1.35rem;color:var(--primary);margin-bottom:14px;font-weight:600}
.contact-info>p{color:var(--text-sub);margin-bottom:28px;font-size:.95rem}
.contact-list li{display:flex;align-items:flex-start;gap:14px;padding:14px 0;border-bottom:1px dashed var(--border)}
.contact-list .c-ic{width:42px;height:42px;border-radius:10px;background:#EAF2FD;color:var(--secondary);display:flex;align-items:center;justify-content:center;flex:none}
.contact-list strong{display:block;font-size:.98rem;color:var(--text-main);font-weight:600}
.contact-list span{font-size:.86rem;color:var(--text-sub)}
.form-card{background:var(--bg-white);border:1px solid var(--border);border-radius:16px;padding:38px;box-shadow:var(--shadow)}
.form-card h3{font-size:1.25rem;color:var(--primary);margin-bottom:6px;font-weight:600}
.form-card .form-tip{font-size:.85rem;color:var(--text-sub);margin-bottom:26px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-grid .full{grid-column:1/-1}
.form-group label{display:block;font-size:.88rem;font-weight:500;color:var(--text-main);margin-bottom:8px}
.form-group label i{color:#e04f4f;font-style:normal}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:8px;background:var(--bg-light);color:var(--text-main);transition:border-color .2s,box-shadow .2s;outline:none}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--secondary);background:#fff;box-shadow:0 0 0 3px rgba(43,123,228,.14)}
.form-group textarea{resize:vertical;min-height:96px}
.form-group input.invalid,.form-group select.invalid{border-color:#e04f4f;background:#fff7f7}
.field-error{display:block;min-height:18px;font-size:.76rem;color:#e04f4f;margin-top:5px}
.form-actions{margin-top:8px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.form-actions small{font-size:.76rem;color:var(--text-sub)}
.form-success{display:none;align-items:center;gap:12px;background:#F0FAF3;border:1px solid #BEE8CE;color:#1E7A46;border-radius:10px;padding:16px;margin-bottom:18px;font-size:.9rem}
.form-success.show{display:flex}
.hidden-form{display:none!important}
.form-privacy{font-size:.76rem;color:var(--text-sub);line-height:1.6}

/* ============ 子页面页头 ============ */
.page-hero{position:relative;background:linear-gradient(150deg,var(--primary) 0%,var(--primary-dark) 52%,var(--primary-deeper) 100%);color:#fff;padding:150px 0 84px;overflow:hidden}
.page-hero::before{content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;background:rgba(43,123,228,.20);pointer-events:none}
.page-hero::after{content:"";position:absolute;left:-80px;bottom:-140px;width:300px;height:300px;border-radius:50%;background:rgba(43,123,228,.12);pointer-events:none}
.page-hero .crumb{font-size:.86rem;color:rgba(255,255,255,.6);margin-bottom:16px;position:relative;z-index:2}
.page-hero .crumb a{color:#6fb0f5}
.page-hero .crumb a:hover{color:#fff}
.page-hero h1{font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:600;line-height:1.3;position:relative;z-index:2}
.page-hero p{margin-top:14px;max-width:660px;color:rgba(255,255,255,.78);position:relative;z-index:2}

/* ============ 子页首屏深蓝 Banner(与首页同风格) ============ */
.hero.sub{min-height:auto;padding:196px 0 132px}
.hero.sub::before{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 85% 18%,rgba(43,123,228,.28),transparent 42%),
  radial-gradient(circle at 8% 88%,rgba(43,123,228,.16),transparent 38%),
  linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:auto,auto,56px 56px,56px 56px;pointer-events:none;z-index:0}
.hero.sub .hero-inner{position:relative;z-index:2;grid-template-columns:1fr;gap:0}
.hero.sub .hero-inner>div{max-width:780px}
.hero .crumb{font-size:.86rem;color:rgba(255,255,255,.62);margin-bottom:20px}
.hero .crumb a{color:#6fb0f5}
.hero .crumb a:hover{color:#fff}
@media(max-width:768px){.hero.sub{padding:148px 0 96px}}

/* ============ 子页模块卡 / 功能点 ============ */
.mod-card{background:var(--bg-white);border:1px solid var(--border);border-radius:16px;padding:40px 36px;box-shadow:var(--shadow);margin-bottom:26px}
.mod-card h3{font-size:1.35rem;color:var(--primary);margin-bottom:12px;font-weight:600;display:flex;align-items:center;gap:12px}
.mod-card h3 .m-ic{width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,var(--secondary),#6fb0f5);display:flex;align-items:center;justify-content:center;color:#fff;flex:none}
.mod-card .sub{color:var(--text-sub);margin-bottom:20px}
.mod-2col{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.feat-list li{display:flex;align-items:flex-start;gap:10px;padding:8px 0;color:var(--text-main);font-size:.95rem}
.feat-list li svg{flex:none;margin-top:3px;color:var(--secondary)}

/* ============ CTA 横幅 ============ */
.cta-band{background:linear-gradient(140deg,var(--primary),var(--primary-dark));border-radius:20px;padding:56px 40px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:rgba(43,123,228,.25)}
.cta-band h2{font-size:clamp(1.35rem,2.4vw,1.7rem);font-weight:600;margin-bottom:10px;position:relative;z-index:2}
.cta-band p{color:rgba(255,255,255,.75);margin-bottom:28px;position:relative;z-index:2}
.cta-band .btn-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2}

/* ============ 新闻列表行 ============ */
.article-row{display:flex;gap:18px;align-items:flex-start;background:var(--bg-white);border:1px solid var(--border);border-radius:14px;padding:22px 24px;margin-bottom:16px;transition:transform .25s,box-shadow .25s}
.article-row:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(26,58,92,.10)}
.article-row .date-box{flex:none;width:62px;text-align:center;background:var(--primary);color:#fff;border-radius:10px;padding:10px 6px;line-height:1.2}
.article-row .date-box strong{display:block;font-size:1.15rem}
.article-row .date-box span{font-size:.66rem;opacity:.8}
.article-row h3{font-size:1.05rem;color:var(--primary);margin-bottom:6px;font-weight:600}
.article-row p{font-size:.9rem;color:var(--text-sub)}
.article-row .cat-tag{display:inline-block;font-size:.74rem;color:var(--secondary);background:#EAF2FD;border-radius:999px;padding:3px 10px;margin-bottom:8px}
.article-row .news-views{display:inline-block;font-size:.76rem;color:var(--text-sub);margin-left:10px}
.article-row .news-views::before{content:"👁";font-size:.72rem;margin-right:4px;opacity:.7}

/* ============ 页脚 ============ */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.78);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-col .f-logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:600;font-size:1.1rem;margin-bottom:16px}
.footer-col p{font-size:.86rem;line-height:1.8}
.footer-col h4{font-size:.95rem;color:#fff;margin-bottom:18px;font-weight:600}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:.86rem;transition:color .2s}
.footer-col ul a:hover{color:#6fb0f5}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.8rem;color:rgba(255,255,255,.5)}
.footer-bottom a:hover{color:#6fb0f5}
.qr-box{display:flex;align-items:center;gap:14px;margin-top:16px}
.qr-box .qr{width:76px;height:76px;background:repeating-linear-gradient(45deg,#fff 0 6px,#e8eef5 6px 12px);border-radius:8px;flex:none}
.qr-box span{font-size:.78rem;color:rgba(255,255,255,.6);line-height:1.6}

/* ============ 浮窗 CTA / 返回顶部 ============ */
.float-group{position:fixed;right:22px;bottom:120px;z-index:90;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.float-cta{display:inline-flex;align-items:center;gap:8px;background:var(--secondary);color:#fff;font-size:.92rem;font-weight:500;padding:12px 18px;border-radius:999px;box-shadow:0 10px 26px rgba(43,123,228,.38);transition:background .25s,transform .2s}
.float-cta:hover{background:var(--secondary-dark);transform:translateY(-3px)}
.float-cta::before{content:"";width:8px;height:8px;border-radius:50%;background:#fff;opacity:.9}
.back-top{width:44px;height:44px;border-radius:12px;background:var(--bg-white);border:1px solid var(--border);color:var(--secondary);display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(26,58,92,.14);opacity:0;visibility:hidden;transform:translateY(8px);transition:all .3s}
.back-top.show{opacity:1;visibility:visible;transform:none}
.back-top:hover{background:var(--secondary);color:#fff}

/* ============ 弹窗 ============ */
.modal{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:20px}
.modal[hidden]{display:none}
.modal-overlay{position:absolute;inset:0;background:rgba(15,34,55,.6);backdrop-filter:blur(3px)}
.modal-box{position:relative;background:#fff;border-radius:18px;width:min(560px,100%);max-height:92vh;overflow-y:auto;padding:40px;box-shadow:0 24px 60px rgba(0,0,0,.35);animation:modalIn .3s ease}
@keyframes modalIn{from{opacity:0;transform:translateY(18px) scale(.98)}to{opacity:1;transform:none}}
.modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;background:var(--bg-light);color:var(--text-sub);font-size:1.15rem;display:flex;align-items:center;justify-content:center;transition:all .2s}
.modal-close:hover{background:#ffecec;color:#e04f4f}
.modal-box h3{font-size:1.4rem;color:var(--primary);margin-bottom:8px;font-weight:600}
.modal-box>p{font-size:.88rem;color:var(--text-sub);margin-bottom:24px}
.modal-box .form-grid{grid-template-columns:1fr;gap:2px}
.modal-box .field-error{min-height:16px}

/* ============ 新闻筛选与分页 ============ */
.news-filter{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:40px}
.filter-btn{padding:8px 20px;border-radius:999px;border:1px solid var(--border);background:#fff;color:var(--text-sub);font-size:.9rem;transition:all .25s}
.filter-btn:hover{border-color:var(--secondary);color:var(--secondary)}
.filter-btn.active{background:var(--secondary);border-color:var(--secondary);color:#fff}
.news-loadmore{text-align:center;margin-top:36px}
.news-empty{text-align:center;color:var(--text-sub);padding:60px 0}
/* ============ 新闻详情 ============ */
.article-detail{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:16px;padding:56px 60px;box-shadow:var(--shadow)}
.article-detail h1{font-size:1.8rem;color:var(--primary);line-height:1.45;font-weight:600;margin-bottom:16px}
.article-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding-bottom:22px;border-bottom:1px dashed var(--border);margin-bottom:30px;color:var(--text-sub);font-size:.88rem}
.article-meta .cat{color:var(--secondary);font-weight:500}
.article-content{font-size:1rem;color:var(--text-main);line-height:2}
.article-content p{margin-bottom:18px}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:36px;padding-top:24px;border-top:1px dashed var(--border);font-size:.9rem}
.article-nav a{color:var(--secondary);max-width:48%}
.article-nav a:hover{color:var(--secondary-dark)}
.article-nav .none{color:var(--text-sub);max-width:48%}
.article-detail .back-list{display:inline-flex;align-items:center;gap:6px;margin-bottom:22px;color:var(--text-sub);font-size:.88rem}
.article-detail .back-list:hover{color:var(--secondary)}
@media(max-width:768px){.article-detail{padding:32px 24px}.article-detail h1{font-size:1.4rem}}

/* ============ 滚动渐入动效 ============ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .solutions-grid{grid-template-columns:repeat(2,1fr)}
  .values-grid{grid-template-columns:repeat(2,1fr)}
  .cases-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-visual{max-width:480px}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
}
@media (max-width:992px){
  .nav-toggle{display:flex}
  .main-nav{position:fixed;top:68px;left:0;right:0;background:var(--bg-white);box-shadow:0 10px 26px rgba(26,58,92,.14);transform:translateY(-12px);opacity:0;visibility:hidden;transition:all .28s;border-top:1px solid var(--border)}
  .main-nav.open{transform:none;opacity:1;visibility:visible}
  .main-nav ul{flex-direction:column;padding:12px 20px 20px;gap:2px}
  .main-nav a{color:var(--text-main)!important;padding:12px 14px;border-radius:8px}
  .main-nav a:hover,.main-nav a.active{background:var(--bg-light)!important;color:var(--secondary)!important}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .header-actions .btn-sm{display:none}
  .hero{padding:110px 0 70px}
  .hero-stats li{padding:0 16px}
  .hero-stats strong{font-size:1.2rem}
  .tab-panel{grid-template-columns:1fr;padding:28px;gap:28px}
  .clients-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
  .cases-grid,.news-grid,.solutions-grid{grid-template-columns:1fr}
  .values-grid{grid-template-columns:1fr 1fr;gap:14px}
  .about-features{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .float-group{right:14px;bottom:96px}
  .float-cta{padding:10px 14px;font-size:.85rem}
  .float-cta span.text{display:none}
  .page-hero{padding:120px 0 60px}
  .mod-card{padding:28px 22px}
  .mod-2col{grid-template-columns:1fr;gap:24px}
  .article-row{flex-direction:column}
}
@media (max-width:460px){
  .values-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .cta-band{padding:40px 24px}
}
/* 移动端禁用 backdrop-filter,降低合成开销(视觉仅损失轻微毛玻璃) */
@media (max-width:768px){
  .site-header,.hv-card,.value-item,.modal-overlay{backdrop-filter:none;-webkit-backdrop-filter:none}
}

/* ============ FAQ 常见问题 ============ */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{border:1px solid #E5EAF2;border-radius:12px;background:#fff;margin-bottom:12px;overflow:hidden;transition:border-color .2s}
.faq-item[open]{border-color:#2B7BE4}
.faq-item summary{cursor:pointer;list-style:none;padding:18px 22px;font-size:1.02rem;font-weight:600;color:#1A3A5C;display:flex;align-items:center;justify-content:space-between;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex:none;font-size:1.3rem;color:#2B7BE4;font-weight:400;transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 22px 20px;color:#4A5A6E;font-size:.95rem;line-height:1.85}
.faq-item p a{color:#2B7BE4;text-decoration:none}
.faq-item p a:hover{text-decoration:underline}

/* ============ 双 Logo:顶部深色 banner 用白色版,下滑白底导航用深色版 ============ */
.logo-img-dark{display:none}
.site-header.scrolled .logo-img-light{display:none}
.site-header.scrolled .logo-img-dark{display:block}