/* 融合版：以渐变版的流动色带、卡片与图片的悬停动效、版式为底；去掉渐变字（强调句用品牌蓝实色）；首屏改为紧凑的「列表窗口 + 识别卡」；深空的「过去 / 现在」对照；黑底版的数据线光点与指针描边，放进深藏青色带里。 */
:root{
  --bg:#ffffff; --bg-2:#f6f8fc; --bg-3:#eef2f9;
  --ink:#0e1a33; --body:#3b4558; --mid:#5d6779; --faint:#8a93a3;
  --line:#e6eaf1;
  --blue:#2463eb; --blue-ink:#1d4fd0; --sky:#22c3ee; --indigo:#7c8cff; --brand:#1774bc;
  --grad:linear-gradient(90deg,#1d4fd0,#2f7bff 40%,#22c3ee 75%,#7c8cff);
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --max:1200px; --gutter:48px; --sec:120px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --card:0 1px 2px rgba(14,26,51,.05),0 8px 24px -8px rgba(14,26,51,.12),0 0 0 1px rgba(14,26,51,.05);
  --float:0 2px 4px rgba(14,26,51,.06),0 30px 60px -20px rgba(14,26,51,.28),0 0 0 1px rgba(14,26,51,.06);
}
@media (max-width:1023px){:root{--gutter:28px;--sec:96px}}
@media (max-width:767px){:root{--gutter:16px;--sec:68px}}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-font-smoothing:antialiased;scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--body);background:var(--bg);font-size:16px;line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{color:var(--ink);font-weight:600;letter-spacing:-.02em}
h1{font-size:62px;line-height:1.12}
h2{font-size:42px;line-height:1.2}
h3{font-size:20px;line-height:1.45}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.narrow{max-width:820px}
.nw{display:inline-block}
/* 两段式：第二句用渐变色 */
.duo b,.duo span{display:inline-block}
.duo b{font-weight:600;color:var(--ink)}
.duo span,.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:999px;font-size:15px;font-weight:500;white-space:nowrap;transition:background .2s,box-shadow .2s,transform .2s var(--ease),color .2s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 1px 2px rgba(36,99,235,.3),inset 0 1px 0 rgba(255,255,255,.18)}
.btn-primary:hover{background:var(--blue-ink);box-shadow:0 8px 20px -8px rgba(36,99,235,.6)}
.btn-primary::after{content:"›";font-size:18px;line-height:1;transition:transform .2s var(--ease)}
.btn-primary:hover::after{transform:translateX(2px)}
.btn-soft{background:#fff;color:var(--ink);box-shadow:0 0 0 1px var(--line),0 1px 2px rgba(14,26,51,.04)}
.btn-soft:hover{box-shadow:0 0 0 1px #cdd4e0,0 6px 16px -8px rgba(14,26,51,.2)}
.btn-sm{height:34px;padding:0 14px;font-size:14px}
.btn-sm::after{display:none}
.link{color:var(--blue-ink);font-weight:500;display:inline-flex;align-items:center;gap:6px}
.link::after{content:"›";font-size:18px;line-height:1;transition:transform .2s var(--ease)}
.link:hover::after{transform:translateX(3px)}
.actions{display:flex;gap:10px;flex-wrap:wrap}
.eyebrow{display:inline-block;font-size:14px;font-weight:600;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.chip{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12.5px;font-weight:500;color:var(--blue-ink);background:#ecf2ff;align-self:flex-start}

/* 顶栏：首屏时透明压在色带上 */
.nav{position:fixed;left:0;right:0;top:0;z-index:50;transition:background .25s,box-shadow .25s}
.nav.is-stuck{background:rgba(255,255,255,.88);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);box-shadow:0 1px 0 var(--line)}
main{padding-top:64px}
.nav-in{max-width:var(--max);margin:0 auto;height:64px;display:flex;align-items:center;gap:32px;padding:0 var(--gutter)}
.brand{display:flex;align-items:center;gap:9px;font-weight:600;font-size:16px;color:var(--ink);letter-spacing:.02em}
.nav-links{display:flex;gap:2px;list-style:none}
.nav-links a{display:inline-flex;align-items:center;height:34px;padding:0 12px;border-radius:999px;font-size:14.5px;color:var(--body);font-weight:500;transition:color .15s,background .15s}
.nav-links a:hover{background:rgba(14,26,51,.05)}
.nav-links a.is-active{color:var(--blue-ink)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:6px}
.nav-right .login{height:34px;padding:0 12px;display:inline-flex;align-items:center;font-size:14.5px;font-weight:500;color:var(--body);border-radius:999px}
.nav-right .login:hover{background:rgba(14,26,51,.05)}
.nav-toggle{display:none;width:38px;height:38px;border-radius:999px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--ink);position:relative;transition:background .2s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--ink);transition:transform .25s var(--ease),top .25s}
.nav-toggle span::before{top:-5px}.nav-toggle span::after{top:5px}
.nav.is-open{background:#fff;box-shadow:0 1px 0 var(--line)}
.nav.is-open .nav-toggle span{background:transparent}
.nav.is-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
.nav.is-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}
.nav-mobile{display:none}

.rv{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:calc(var(--i,0)*70ms)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* 流动色带：斜切的渐变（canvas 低分辨率渲染，放大后自然柔和） */
.ribbon{position:absolute;left:0;right:0;overflow:hidden;pointer-events:none}
.ribbon canvas{position:absolute;inset:0;width:100%;height:100%}
.hero .ribbon{top:-64px;height:calc(100% + 64px);clip-path:polygon(0 0,100% 0,100% 56%,0 92%)}
.hero .ribbon::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.9) 0%,rgba(255,255,255,.55) 36%,rgba(255,255,255,0) 60%)}

/* 首屏 */
.hero{position:relative;padding:80px 0 0}
.hero .wrap{position:relative}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:40px;align-items:start}
.hero h1{margin:18px 0 22px}
.hero h1 .grad-text{display:inline-block}
.hero .lead{font-size:19px;color:var(--body);max-width:520px;text-wrap:pretty}
.hero .actions{margin-top:32px}
.hero-meta{margin-top:16px;font-size:13px;color:var(--mid)}
/* 叠放：电脑窗口 + 手机 + 浮动卡 */
.stack{position:relative;height:560px;margin-top:8px}
.stack .desk{position:absolute;left:0;top:24px;width:118%;border-radius:12px;overflow:hidden;background:#fff;box-shadow:var(--float);transform:translateY(var(--p1,0))}
.stack .desk .bar{height:30px;display:flex;align-items:center;gap:6px;padding:0 12px;border-bottom:1px solid var(--line);background:#fbfcfe}
.stack .desk .bar i{width:8px;height:8px;border-radius:50%;background:#dfe4ec}
.stack .phone{position:absolute;left:-36px;top:200px;width:190px;border-radius:28px;padding:7px;background:#0e1a33;box-shadow:var(--float);transform:translateY(var(--p2,0))}
.stack .phone img{border-radius:22px}
.stack .floater{position:absolute;right:-60px;top:330px;width:340px;border-radius:12px;overflow:hidden;background:#fff;box-shadow:var(--float);transform:translateY(var(--p3,0))}
.stack .floater .cap{position:absolute;left:12px;top:10px;font-size:12px;color:var(--mid);background:rgba(255,255,255,.9);padding:2px 8px;border-radius:999px;box-shadow:0 0 0 1px var(--line)}

/* 事实带：深色斜切 */
.facts{position:relative;margin-top:96px;padding:72px 0;color:#fff;background:linear-gradient(135deg,#0e1a33,#132a57);clip-path:polygon(0 8%,100% 0,100% 92%,0 100%)}
.facts .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.facts b{display:block;font-size:44px;font-weight:600;letter-spacing:-.03em;line-height:1.1;background:linear-gradient(90deg,#fff,#a9d8ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.facts span{display:block;margin-top:6px;font-size:14.5px;color:rgba(255,255,255,.7)}

.sec{padding:var(--sec) 0;position:relative}
.sec.tint{background:var(--bg-2)}
.sec.slant{background:var(--bg-2);clip-path:polygon(0 4%,100% 0,100% 100%,0 100%);padding-top:calc(var(--sec) + 40px)}
.head{max-width:780px;margin-bottom:56px}
.head h2{margin-top:10px}
.head p{margin-top:14px;font-size:17px;color:var(--mid);text-wrap:pretty}

/* 列表切换：左侧可点的条目，右侧画面切换 */
.rail{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.rail-list{display:grid;gap:6px}
.rail-item{text-align:left;padding:20px 22px;border-radius:14px;transition:background .25s,box-shadow .25s;position:relative}
.rail-item:hover{background:rgba(14,26,51,.03)}
.rail-item.is-on{background:#fff;box-shadow:var(--card)}
.rail-item .t{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:600;color:var(--ink)}
.rail-item .ic{flex:0 0 32px;height:32px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:#ecf2ff;color:var(--blue-ink);transition:background .25s,color .25s}
.rail-item.is-on .ic{background:var(--grad);color:#fff}
.rail-item .ic svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.rail-item .d{display:grid;grid-template-rows:0fr;transition:grid-template-rows .4s var(--ease)}
.rail-item.is-on .d{grid-template-rows:1fr}
.rail-item .d > div{overflow:hidden}
.rail-item .d p{padding:10px 0 0 44px;font-size:15px;color:var(--mid)}
.rail-item .d .ticks{padding:12px 0 2px 44px}
.rail-item .bar{position:absolute;left:22px;right:22px;bottom:0;height:2px;border-radius:2px;overflow:hidden;opacity:0}
.rail-item.is-on .bar{opacity:1}
.rail-item.is-on .bar::after{content:"";position:absolute;inset:0;background:var(--grad);transform-origin:left;transform:scaleX(0);animation:fill var(--dur,7s) linear forwards}
.rail.paused .rail-item .bar{display:none}
@keyframes fill{to{transform:scaleX(1)}}
.rail-stage{position:sticky;top:110px;aspect-ratio:16/12;border-radius:20px;overflow:hidden;background:radial-gradient(120% 80% at 100% 0%,rgba(34,195,238,.18),transparent 55%),radial-gradient(90% 80% at 0% 100%,rgba(124,140,255,.2),transparent 55%),var(--bg-3);box-shadow:inset 0 0 0 1px var(--line)}
.rail-stage .shot{position:absolute;left:7%;top:8%;width:86%;border-radius:12px;background:#fff;box-shadow:var(--float);opacity:0;transform:translateY(16px) scale(.98);transition:opacity .5s var(--ease),transform .6s var(--ease)}
.rail-stage .shot.is-on{opacity:1;transform:none}
.rail-stage .shot.mid{top:50%;transform:translateY(calc(-50% + 16px)) scale(.98)}
.rail-stage .shot.mid.is-on{transform:translateY(-50%)}
.rail-stage .shot.phones{background:none;box-shadow:none;display:flex;justify-content:center;gap:24px}
.rail-stage .shot.phones img{width:30%;border-radius:22px;border:6px solid #0e1a33;box-shadow:var(--float)}
.rail-stage .shot.phones img + img{margin-top:8%}
.rail-item .inline{display:none}
.ticks{list-style:none;display:grid;gap:8px}
.ticks li{display:flex;gap:10px;font-size:15px;color:var(--body)}
.ticks li::before{content:"";flex:0 0 16px;height:16px;margin-top:4px;border-radius:50%;background:#ecf2ff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.3l2.2 2.2L11.5 5.7' fill='none' stroke='%231d4fd0' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat}
.more{margin-top:40px;font-size:15px;color:var(--mid);display:flex;gap:6px;align-items:center;flex-wrap:wrap}

/* 便当格：卡片带图形 */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tile{position:relative;border-radius:18px;background:#fff;box-shadow:var(--card);overflow:hidden;display:flex;flex-direction:column;min-height:380px;transition:transform .35s var(--ease),box-shadow .35s}
.tile:hover{transform:translateY(-4px);box-shadow:0 2px 4px rgba(14,26,51,.06),0 24px 48px -16px rgba(14,26,51,.22),0 0 0 1px rgba(14,26,51,.06)}
.tile .txt{padding:26px 26px 0}
.tile h3{font-size:18px}
.tile p{font-size:14.5px;color:var(--mid);margin-top:6px}
.tile .pic{position:relative;margin-top:auto;height:220px;overflow:hidden;background:linear-gradient(180deg,transparent,var(--bg-2))}
.tile .pic img{position:absolute;left:26px;top:22px;width:125%;max-width:none;border-radius:10px 0 0 0;box-shadow:var(--float);transition:transform .6s var(--ease)}
.tile:hover .pic img{transform:translate(-6px,-6px)}
.tile.span2{grid-column:span 2}

/* 两种用法 */
.pair{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.panel{border-radius:20px;background:#fff;box-shadow:var(--card);padding:40px;display:flex;flex-direction:column}
.panel h3{font-size:28px;margin:12px 0 8px}
.panel .who{color:var(--mid);margin-bottom:22px}
.panel .ticks{margin-bottom:28px;flex:1}
.panel.hi{position:relative;overflow:hidden;color:#fff;background:linear-gradient(135deg,#0e1a33,#16336b)}
.panel.hi::before{content:"";position:absolute;right:-30%;top:-40%;width:80%;height:120%;background:radial-gradient(closest-side,rgba(34,195,238,.35),transparent);pointer-events:none}
.panel.hi > *{position:relative}
.panel.hi h3{color:#fff}.panel.hi .who{color:rgba(255,255,255,.72)}
.panel.hi .ticks li{color:rgba(255,255,255,.88)}
.panel.hi .ticks li::before{background-color:rgba(255,255,255,.12);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.3l2.2 2.2L11.5 5.7' fill='none' stroke='%237dd3fc' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")}
.panel.hi .chip{background:rgba(255,255,255,.12);color:#bfe3ff}
.panel.hi .link{color:#9fd6ff}
.panel.hi .btn-soft{background:rgba(255,255,255,.1);color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.25)}
.note{margin-top:28px;color:var(--mid);font-size:15px}

.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.trio > div{border-radius:18px;background:#fff;box-shadow:var(--card);padding:30px}
.trio small{font-size:12.5px;font-weight:600;letter-spacing:.04em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.trio h3{font-size:22px;margin:6px 0 16px}
.kv{display:grid;gap:10px;font-size:14.5px}
.kv div{display:grid;grid-template-columns:84px 1fr;gap:10px}
.kv b{font-weight:400;color:var(--faint)}
.quad{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:48px}
.quad h4{font-size:15px;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.quad h4::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--grad)}
.quad p{font-size:14px;color:var(--mid)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid3 > div{border-radius:18px;background:#fff;box-shadow:var(--card);padding:28px}
.grid3 h3{font-size:17px;margin:0 0 6px}
.grid3 .chip{margin-bottom:14px}
.grid3 p{font-size:14.5px;color:var(--mid)}
.tint .grid3 > div,.slant .grid3 > div{background:#fff}

/* 转化区：左文右卡，底部色带 */
.cta{position:relative;overflow:hidden;padding:140px 0 160px}
.cta .ribbon{inset:0;clip-path:polygon(0 30%,100% 0,100% 100%,0 100%)}
.cta .ribbon::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.7),rgba(255,255,255,.25))}
.cta .wrap{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.cta h2{font-size:46px}
.cta p{margin-top:14px;font-size:17px;color:var(--body)}
.cta .actions{margin-top:28px}
.cta-cards{display:grid;gap:14px}
.cta-cards a{display:flex;gap:16px;align-items:flex-start;padding:22px;border-radius:16px;background:rgba(255,255,255,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:var(--card);transition:transform .3s var(--ease)}
.cta-cards a:hover{transform:translateY(-3px)}
.cta-cards .ic{flex:0 0 36px;height:36px;border-radius:10px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff}
.cta-cards .ic svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.cta-cards h4{font-size:16px}
.cta-cards p{margin:4px 0 0;font-size:14px;color:var(--mid)}

/* 页脚 */
.footer{background:var(--bg-2);font-size:14px;padding:64px 0 36px}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:32px}
.fgrid h4{font-size:13px;color:var(--ink);margin-bottom:14px;font-weight:600}
.fgrid ul{list-style:none;display:grid;gap:9px;color:var(--mid)}
.fgrid ul a:hover{color:var(--blue-ink)}
.fbrand p{color:var(--mid);margin-top:12px;max-width:280px}
.legal{margin-top:56px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;color:var(--faint);font-size:13px;flex-wrap:wrap}
.legal a:hover{color:var(--ink)}

/* 内页页头：小色带 */
.phead{position:relative;padding:96px 0 80px;overflow:hidden}
.phead .ribbon{top:-64px;height:calc(100% + 64px);clip-path:polygon(0 0,100% 0,100% 62%,0 100%)}
.phead .ribbon::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.92) 0%,rgba(255,255,255,.6) 45%,rgba(255,255,255,.15) 75%)}
.phead .wrap{position:relative}
.phead h1{font-size:54px;margin:14px 0 18px;max-width:860px}
.phead h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.phead .lead{font-size:18px;color:var(--body);max-width:600px;text-wrap:pretty}
.phead .actions{margin-top:28px}

.subnav{position:sticky;top:64px;z-index:30;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:0 1px 0 var(--line),0 -1px 0 var(--line)}
.subnav ul{max-width:var(--max);margin:0 auto;list-style:none;display:flex;gap:4px;height:50px;align-items:center;padding:0 var(--gutter);overflow-x:auto}
.subnav a{display:inline-flex;height:32px;align-items:center;padding:0 14px;border-radius:999px;font-size:14px;font-weight:500;color:var(--mid);white-space:nowrap}
.subnav a.is-active,.subnav a:hover{color:var(--blue-ink);background:#ecf2ff}

/* 画布 */
.canvas{position:relative;aspect-ratio:16/10.5;border-radius:18px;overflow:hidden;background:radial-gradient(120% 80% at 100% 0%,rgba(34,195,238,.16),transparent 55%),radial-gradient(90% 80% at 0% 100%,rgba(124,140,255,.18),transparent 55%),var(--bg-3);container-type:inline-size;--vis:57cqw}
.canvas > img{position:absolute;left:7%;top:8%;width:86%;border-radius:10px;background:#fff;box-shadow:var(--float)}
.canvas.top > img{-webkit-mask-image:linear-gradient(180deg,#000 calc(var(--vis) - 100px),transparent calc(var(--vis) - 6px));mask-image:linear-gradient(180deg,#000 calc(var(--vis) - 100px),transparent calc(var(--vis) - 6px))}
.canvas.mid > img{top:50%;transform:translateY(-50%)}
.canvas.zoom > img{width:150%;top:50%;transform:translateY(-50%);-webkit-mask-image:linear-gradient(90deg,#000 52%,transparent 64%);mask-image:linear-gradient(90deg,#000 52%,transparent 64%)}
.canvas.phones{display:flex;justify-content:center;gap:28px;padding-top:7%}
.canvas.phones .ph{width:26%;align-self:flex-start;border-radius:24px;padding:6px;background:#0e1a33;box-shadow:var(--float)}
.canvas.phones .ph:nth-child(2){margin-top:6%}
.canvas.phones .ph img{border-radius:18px}
.cap{margin-top:12px;font-size:13px;color:var(--faint)}

.row{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:center}
.row + .row{margin-top:96px}
.row h3{font-size:26px;line-height:1.4;margin-bottom:14px}
.row p{color:var(--mid);margin-bottom:18px;text-wrap:pretty}

.seg{display:inline-flex;gap:2px;padding:4px;border-radius:999px;background:var(--bg-3);margin-bottom:36px;position:relative;max-width:100%;overflow-x:auto}
.seg .tab{position:relative;z-index:1;height:38px;padding:0 18px;border-radius:999px;font-size:14.5px;font-weight:500;color:var(--mid);white-space:nowrap;transition:color .25s}
.seg .tab.is-on{color:#fff}
.seg .ind{position:absolute;top:4px;bottom:4px;left:0;width:0;border-radius:999px;background:var(--grad);box-shadow:0 4px 12px -4px rgba(36,99,235,.5);transition:left .35s var(--ease),width .35s var(--ease)}
.pane{display:none;grid-template-columns:5fr 7fr;gap:64px;align-items:center}
.pane.is-on{display:grid;animation:fadein .5s var(--ease)}
.pane h3{font-size:26px;margin-bottom:10px}
.pane p{color:var(--mid);margin-bottom:18px}
@keyframes fadein{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

.nums{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.nums > div{border-radius:18px;background:#fff;box-shadow:var(--card);padding:30px}
.nums b{display:block;font-size:52px;font-weight:600;letter-spacing:-.03em;line-height:1.1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nums span{display:block;color:var(--mid);margin-top:8px;font-size:14.5px}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;position:relative;padding-top:40px}
.steps::before{content:"";position:absolute;left:0;right:0;top:9px;height:2px;border-radius:2px;background:var(--grad);opacity:.35}
.steps > div{position:relative}
.steps > div::before{content:"";position:absolute;top:-38px;left:0;width:18px;height:18px;border-radius:50%;background:var(--grad);box-shadow:0 0 0 4px #fff,0 4px 10px rgba(36,99,235,.35)}
.tint .steps > div::before,.slant .steps > div::before{box-shadow:0 0 0 4px var(--bg-2),0 4px 10px rgba(36,99,235,.35)}
.steps h3{font-size:17px;margin-bottom:6px}
.steps p{font-size:14.5px;color:var(--mid)}

.plans{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.plans .panel .price{font-size:50px;font-weight:600;letter-spacing:-.03em;margin:12px 0 2px;line-height:1.1;color:var(--ink)}
.plans .panel.hi .price{color:#fff}
.plans .panel .muted{color:var(--mid);font-size:14.5px}
.plans .panel.hi .muted{color:rgba(255,255,255,.72)}
.plans .panel .ticks{margin:24px 0 32px}

.table{width:100%;border-collapse:separate;border-spacing:0;font-size:15px;background:#fff;border-radius:18px;box-shadow:var(--card);overflow:hidden}
.table th,.table td{padding:16px 20px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.table thead th{font-weight:600;color:var(--ink);background:var(--bg-2)}
.table tbody tr:last-child td{border-bottom:0}
.table td:first-child{color:var(--faint);width:150px}

.faq{display:grid;gap:10px}
.faq details{border-radius:14px;background:#fff;box-shadow:var(--card);padding:0 22px}
.faq summary{list-style:none;cursor:pointer;padding:18px 0;display:flex;justify-content:space-between;gap:24px;font-size:16px;color:var(--ink);font-weight:500}
.faq summary::-webkit-details-marker{display:none}
.faq summary i{flex:0 0 22px;height:22px;position:relative;border-radius:50%;background:#ecf2ff;margin-top:1px}
.faq summary i::before,.faq summary i::after{content:"";position:absolute;left:50%;top:50%;width:10px;height:1.6px;background:var(--blue-ink);transform:translate(-50%,-50%);transition:transform .3s var(--ease)}
.faq summary i::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq details[open] summary i::after{transform:translate(-50%,-50%) rotate(0)}
.faq .a{padding:0 0 20px;color:var(--mid);max-width:760px}

.gate{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.gate .panel{gap:14px}
.gate .panel h3{margin:0}
.gate .btn{align-self:flex-start}
.search{position:relative}
.search input{width:100%;height:46px;border:0;border-radius:12px;padding:0 14px;font:inherit;font-size:15px;color:var(--ink);background:var(--bg-2);box-shadow:inset 0 0 0 1px var(--line);outline:0;transition:box-shadow .2s}
.search input:focus{box-shadow:inset 0 0 0 1px var(--blue),0 0 0 3px rgba(36,99,235,.18)}
.search ul{list-style:none;position:absolute;left:0;right:0;top:52px;background:#fff;border-radius:12px;box-shadow:var(--float);display:none;z-index:5;max-height:260px;overflow:auto;padding:6px}
.search ul.is-open{display:block}
.search li{padding:10px 12px;cursor:pointer;display:flex;justify-content:space-between;gap:12px;font-size:15px;border-radius:8px}
.search li:hover{background:var(--bg-2)}
.search li small{color:var(--faint);font-family:var(--mono);font-size:12px}
.search .empty{padding:12px;color:var(--faint);font-size:14px}
.remember{display:none;font-size:14px;color:var(--mid);padding:12px 0;margin-bottom:8px}
.remember.is-on{display:flex;justify-content:space-between;gap:12px;align-items:center}

.form{display:grid;gap:16px}
.form .r2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form label{display:grid;gap:6px;font-size:14px;color:var(--mid)}
.form input,.form textarea,.form select{height:44px;border:0;border-radius:10px;padding:0 12px;font:inherit;font-size:15px;color:var(--ink);background:var(--bg-2);box-shadow:inset 0 0 0 1px var(--line);outline:0}
.form textarea{height:120px;padding:10px 12px;resize:vertical}
.form input:focus,.form textarea:focus,.form select:focus{box-shadow:inset 0 0 0 1px var(--blue),0 0 0 3px rgba(36,99,235,.18)}
.form .ok{display:none;padding:12px 14px;background:#effaf1;border-radius:10px;color:#22663a;font-size:14px}
.form .ok.is-on{display:block}
.form .btn{justify-self:start}
.about-grid{display:grid;grid-template-columns:7fr 5fr;gap:20px}
.about-grid > *{border-radius:20px;background:#fff;box-shadow:var(--card);padding:36px}
.about-grid h3{font-size:20px;margin-bottom:8px}
.about-grid p{color:var(--mid)}
.about-grid hr{border:0;border-top:1px solid var(--line);margin:28px 0}

.totop{position:fixed;right:24px;bottom:24px;width:42px;height:42px;border-radius:999px;background:#fff;box-shadow:var(--float);display:flex;align-items:center;justify-content:center;opacity:0;transform:translateY(8px);transition:opacity .3s,transform .3s var(--ease);z-index:40}
.totop.is-on{opacity:1;transform:none}
.totop svg{width:15px;height:15px;stroke:var(--ink);fill:none;stroke-width:1.75}

@media (max-width:1023px){
  h1{font-size:46px}h2{font-size:34px}
  .nav-links,.nav-right .login{display:none}
  .nav-toggle{display:inline-flex}
  .nav.is-open .nav-mobile{display:block;padding:4px var(--gutter) 12px}
  .nav-mobile a{display:block;padding:12px 0;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line)}
  .nav-mobile a:last-child{border-bottom:0}
  .hero-grid{grid-template-columns:1fr}
  .stack{height:auto;margin-top:48px}
  .stack .desk{position:relative;top:0;width:100%}
  .stack .phone{left:auto;right:4%;top:auto;bottom:-40px;width:140px}
  .stack .floater{display:none}
  .facts .grid{grid-template-columns:1fr 1fr;row-gap:32px}
  .rail{grid-template-columns:1fr}
  .rail-stage{display:none}
  .rail-item .d{grid-template-rows:1fr}
  .rail-item .inline{display:block;margin:16px 0 4px}
  .rail-item{background:#fff;box-shadow:var(--card)}
  .rail-item .bar{display:none}
  .rail-list{gap:14px}
  .bento,.pair,.plans,.gate,.about-grid,.row,.pane,.pane.is-on,.trio,.grid3,.nums{grid-template-columns:1fr}
  .tile.span2{grid-column:auto}
  .quad{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr;row-gap:48px}
  .steps::before{display:none}
  .fgrid{grid-template-columns:1fr 1fr}
  .fbrand{grid-column:1/-1}
  .cta .wrap{grid-template-columns:1fr}
  .cta h2{font-size:36px}
  .phead h1{font-size:40px}
  .row{gap:32px}
}
@media (max-width:767px){
  h1{font-size:36px}h2{font-size:28px}
  .hero{padding-top:48px}
  .hero .lead{font-size:16px}
  .stack .phone{width:110px;padding:5px;border-radius:20px;bottom:-28px}
  .stack .phone img{border-radius:16px}
  .facts{margin-top:72px;padding:56px 0}
  .facts b{font-size:34px}
  .rail-item{padding:18px}
  .rail-item .d p,.rail-item .d .ticks{padding-left:0}
  .tile{min-height:320px}
  .panel{padding:26px}
  .quad,.steps{grid-template-columns:1fr}
  .form .r2{grid-template-columns:1fr}
  .table{font-size:13px}.table th,.table td{padding:12px 10px}.table td:first-child{width:64px}
  .phead{padding:56px 0 56px}
  .phead h1{font-size:32px}
  .cta{padding:96px 0 110px}
  .cta h2{font-size:28px}
  .row h3,.pane h3{font-size:22px}
  .canvas{border-radius:12px}
  .canvas > img{left:5%;width:90%;top:7%;border-radius:6px}
  .canvas.phones .ph{width:34%;padding:4px;border-radius:14px}.canvas.phones .ph img{border-radius:10px}
  .legal{flex-direction:column}
  .totop{right:14px;bottom:14px}
}
.rail-item .d > span{overflow:hidden;min-height:0;display:block}
.rail-item .pp{display:block;padding:10px 0 0 44px;font-size:15px;color:var(--mid);font-weight:400}
.rail-item .t{line-height:1.45}
@media (max-width:767px){.rail-item .pp{padding-left:0}}
.stack .desk{left:56px;width:112%}
.stack .phone{left:-28px;top:250px;width:176px}
.stack .floater{right:-40px;top:360px;width:320px}
@media (max-width:1023px){.stack .desk{left:0;width:100%}.stack .phone{left:auto}}
@media (max-width:1023px){.stack .phone{display:none}.stack{margin-bottom:8px}}

/* ===== 融合版覆盖 ===== */
:root{--emph:#1d5fd6;--navy:#0e1f45;--navy-2:#132b5c}
.duo span,.grad-text,.phead h1 span{background:none;-webkit-background-clip:border-box;background-clip:border-box;color:var(--emph)}
.eyebrow{background:none;-webkit-background-clip:border-box;background-clip:border-box;color:var(--emph);font-size:13.5px;display:inline-flex;align-items:center;gap:8px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--emph)}
.nums b{background:none;-webkit-background-clip:border-box;background-clip:border-box;color:var(--ink)}
.trio small{background:none;-webkit-background-clip:border-box;background-clip:border-box;color:var(--emph)}
.quad h4::before,.steps > div::before{background:var(--emph)}
.steps::before{background:var(--emph);opacity:.25}
.seg .ind{background:var(--emph)}
.rail-item.is-on .ic,.cta-cards .ic{background:var(--emph)}
.rail-item.is-on .bar::after{background:var(--emph)}

/* 首屏：列表窗口 + 识别卡，紧凑叠放 */
.hero{padding-bottom:0}
.hero-grid{grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.hero-visual{position:relative;margin:24px 0 72px}
.hero-visual .win{position:relative;border-radius:12px;overflow:hidden;background:#fff;box-shadow:var(--float);width:108%}
.hero-visual .win .bar{height:32px;display:flex;align-items:center;gap:6px;padding:0 12px;border-bottom:1px solid var(--line);background:#fbfcfe}
.hero-visual .win .bar i{width:8px;height:8px;border-radius:50%;background:#dfe4ec}
.hero-visual .win .bar span{margin-left:10px;font-family:var(--mono);font-size:11px;color:var(--faint)}
.recog{position:absolute;left:-44px;bottom:-56px;width:330px;border-radius:14px;background:#fff;box-shadow:var(--float);padding:16px 16px 14px;font-size:13px}
.recog-head{display:flex;gap:10px;align-items:center;padding-bottom:12px;border-bottom:1px solid var(--line)}
.recog-head .file{flex:0 0 34px;height:40px;border-radius:6px;background:#fdecec;color:#d14343;font-size:10px;font-weight:700;display:flex;align-items:flex-end;justify-content:center;padding-bottom:5px;position:relative}
.recog-head .file::before{content:"";position:absolute;right:0;top:0;width:10px;height:10px;background:linear-gradient(225deg,#fff 50%,#f5c6c6 50%);border-top-right-radius:6px}
.recog-head b{display:block;font-size:13px;color:var(--ink);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:240px}
.recog-head small{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--mid)}
.recog-head small i{width:7px;height:7px;border-radius:50%;background:#f59e0b;box-shadow:0 0 0 3px rgba(245,158,11,.18)}
.recog.done .recog-head small i{background:#22a06b;box-shadow:0 0 0 3px rgba(34,160,107,.18)}
.recog-fields{display:grid;gap:8px;padding:12px 0}
.recog-fields > div{display:grid;grid-template-columns:40px 1fr;gap:8px;align-items:start}
.recog-fields dt{color:var(--faint);font-size:12px;padding-top:1px}
.recog-fields dd{position:relative;color:var(--ink);min-height:18px;line-height:1.5}
.recog-fields dd > span{display:inline;opacity:0;transition:opacity .35s var(--ease)}
.recog-fields dd::before{content:"";position:absolute;left:0;top:4px;height:10px;width:var(--sk,70%);border-radius:4px;background:linear-gradient(90deg,#eef2f8,#f7f9fc,#eef2f8);background-size:200% 100%;animation:sk 1.2s linear infinite;transition:opacity .3s}
.recog-fields > div.on dd > span{opacity:1}
.recog-fields > div.on dd::before{opacity:0}
.recog-fields .tag{display:inline-block;font-size:11px;line-height:18px;padding:0 6px;border-radius:4px;box-shadow:inset 0 0 0 1px #d6dbe4;color:var(--body);margin:0 4px 2px 0}
@keyframes sk{to{background-position:-200% 0}}
.recog-foot{display:flex;justify-content:space-between;align-items:center;padding-top:10px;border-top:1px solid var(--line);font-size:12px;color:var(--mid)}
.recog-foot .ok{height:26px;padding:0 12px;border-radius:999px;background:var(--emph);color:#fff;font-size:12px;display:inline-flex;align-items:center;opacity:.35;transition:opacity .3s}
.recog.done .recog-foot .ok{opacity:1}

/* 深藏青色带：一条数据线，光点流过四个地方 */
.band{position:relative;margin-top:24px;padding:96px 0 104px;color:#fff;background:radial-gradient(70% 120% at 85% 0%,rgba(34,195,238,.18),transparent 55%),linear-gradient(135deg,var(--navy),var(--navy-2));clip-path:polygon(0 7%,100% 0,100% 93%,0 100%)}
.band .head{margin-bottom:24px}
.band h2{color:#fff}
.band h2 span{color:#8ec9ff}
.band .eyebrow{color:#8ec9ff}.band .eyebrow::before{background:#8ec9ff}
.line-flow{position:relative;margin-top:8px}
.line-flow svg{width:100%;height:100px;display:block;overflow:visible}
.line-flow .track{stroke:rgba(255,255,255,.18);stroke-width:1}
.line-flow .pulse{stroke:#7dd3fc;stroke-width:2;stroke-linecap:round;stroke-dasharray:70 1400;animation:pulse 4.2s linear infinite;filter:drop-shadow(0 0 6px rgba(125,211,252,.9))}
.line-flow .pulse-2{animation-delay:-2.1s;stroke:#9fb6ff}
@keyframes pulse{from{stroke-dashoffset:70}to{stroke-dashoffset:-760}}
.line-flow .node{fill:var(--navy);stroke:#7dd3fc;stroke-width:1.5}
.line-flow .node-in{fill:#7dd3fc}
.stops{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stops > div{text-align:center}
.stops h3{color:#fff;font-size:18px;margin-bottom:6px}
.stops p{font-size:14.5px;color:rgba(255,255,255,.72);text-wrap:balance}
@media (prefers-reduced-motion:reduce){.line-flow .pulse{animation:none;opacity:.5;stroke-dasharray:none}}

/* 特点：展开项里加「过去 / 现在」，过去那句在展开时被划掉 */
.rail-item .vs{display:grid;gap:4px;padding:10px 0 0 44px;font-size:14.5px;font-weight:400}
.rail-item .vs .was{color:var(--faint)}
.rail-item .vs .was s{text-decoration:none;background:linear-gradient(currentColor,currentColor) 0 58%/0 1px no-repeat;transition:background-size .9s var(--ease) .35s}
.rail-item.is-on .vs .was s{background-size:100% 1px}
.rail-item .vs .now{color:var(--ink)}
.rail-item .vs b{font-weight:600;margin-right:6px;font-size:12.5px}
.rail-item .vs .was b{color:var(--faint)}.rail-item .vs .now b{color:var(--emph)}

/* 其余能力：图贴着文字；卡片边框跟随指针发亮 */
.tile{min-height:0}
.tile .pic{margin-top:18px;height:240px;flex:1;min-height:240px}
.tile .pic img{top:0}
.tile::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:radial-gradient(260px circle at var(--mx,50%) var(--my,0%),rgba(29,95,214,.55),transparent 60%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s;pointer-events:none;z-index:2}
.tile:hover::before{opacity:1}

@media (max-width:1023px){
  .hero-visual{margin:40px 0 80px}
  .hero-visual .win{width:100%}
  .recog{left:auto;right:12px;bottom:-60px}
  .stops{grid-template-columns:1fr 1fr;row-gap:28px}
  .line-flow{display:none}
}
@media (max-width:767px){
  .recog{position:relative;left:auto;right:auto;bottom:auto;width:auto;margin:-28px 12px 0}
  .hero-visual{margin-bottom:24px}
  .band{padding:72px 0}
  .stops{grid-template-columns:1fr}
  .stops > div{text-align:left;padding-left:16px;border-left:1px solid rgba(255,255,255,.2)}
  .rail-item .vs{padding-left:0}
}
.hero h1{font-size:54px}
.recog{left:8px;bottom:-52px}
.recog-fields .tag{font-style:normal}
.band .duo b{color:#fff}
@media (max-width:1023px){.hero h1{font-size:46px}}
@media (max-width:767px){.hero h1{font-size:36px}}
.tile .pic img.big{width:190%}
@media (max-width:1023px){.hero-grid{grid-template-columns:1fr;gap:0}}
/* 首屏窗口：右侧出血，图按接近原大显示 */
.hero-visual .win{width:calc(100% + 96px)}
.recog{left:-28px;bottom:-56px}
/* 数据线：进入视口时光点流过一次，节点依次亮起，然后静止 */
.line-flow .pulse{stroke-width:1.5;filter:drop-shadow(0 0 3px rgba(125,211,252,.45));animation:none;stroke-dashoffset:70;opacity:0}
.line-flow.in .pulse{animation:pulse-once 2.4s cubic-bezier(.4,0,.2,1) .3s 1 forwards}
@keyframes pulse-once{0%{stroke-dashoffset:70;opacity:1}90%{opacity:1}100%{stroke-dashoffset:-760;opacity:0}}
.line-flow .track{stroke:rgba(255,255,255,.14)}
.line-flow .node-in{fill:rgba(125,211,252,.25);transition:fill .5s ease}
.line-flow.in .node-in{fill:#7dd3fc}
.line-flow.in .n1{transition-delay:.35s}.line-flow.in .n2{transition-delay:.95s}.line-flow.in .n3{transition-delay:1.55s}.line-flow.in .n4{transition-delay:2.15s}
@media (prefers-reduced-motion:reduce){.line-flow .pulse{display:none}.line-flow .node-in{fill:#7dd3fc}}
@media (max-width:1023px){.hero-visual .win{width:100%}}
p,li,.rail-item .vs > span,.rail-item .pp,.tile p,.quad p,.stops p{text-wrap:pretty}
.canvas.zoom-import > img{left:5%;width:125%;max-width:none;-webkit-mask-image:linear-gradient(90deg,#000 62%,transparent 76%);mask-image:linear-gradient(90deg,#000 62%,transparent 76%)}
/* 页脚联系方式 */
.fcontact{display:grid;gap:6px;margin-top:18px;font-size:13.5px}
.fcontact > div{display:grid;grid-template-columns:36px 1fr;gap:8px}
.fcontact dt{color:var(--faint)}
.fcontact dd{color:var(--mid);max-width:300px}
.fcontact a:hover{color:var(--blue-ink)}
/* 转化区邮箱（参照数塔官网「或直接联系」） */
.cta p.cta-mail{margin-top:20px;font-size:14px;color:var(--mid)}
.cta p.cta-mail a{color:var(--emph);font-weight:600;text-decoration:none}
.cta p.cta-mail a:hover{text-decoration:underline}
/* ===== 单页版（single）补充 ===== */
/* 锚点跳转避开固定导航 */
section[id]{scroll-margin-top:64px}
/* 页脚：品牌 + 三栏 */
@media (min-width:1024px){.fgrid.fgrid-single{grid-template-columns:2fr 1fr 1fr 1fr}}