/* =========================================================
   元合智能 · YUANHE INTELLIGENT
   Corporate website stylesheet
   ========================================================= */

:root{
  --ink:#0a0a13;
  --ink-soft:#15151f;
  --paper:#ffffff;
  --paper-soft:#f5f6fa;
  --muted:#5d6472;
  --muted-2:#8a90a0;
  --line:rgba(10,10,19,.09);
  --line-light:rgba(255,255,255,.12);
  --brand:#1e2087;
  --brand-2:#5b5bff;
  --cyan:#22d3ee;
  --violet:#a78bfa;
  --grad:linear-gradient(115deg,#7c7cff 0%,#5b5bff 40%,#22d3ee 100%);
  --grad-soft:linear-gradient(115deg,rgba(91,91,255,.16),rgba(34,211,238,.12));
  --radius:20px;
  --radius-sm:12px;
  --shadow:0 30px 80px -30px rgba(10,10,30,.28);
  --font:"Inter","SF Pro Display","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
::selection{background:rgba(91,91,255,.24)}

.container{width:min(1200px,calc(100% - 48px));margin-inline:auto}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.delay-1{transition-delay:.08s}
.delay-2{transition-delay:.16s}
.delay-3{transition-delay:.24s}
.delay-4{transition-delay:.32s}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important}
}

/* =========================================================
   Header
   ========================================================= */
.site-header{
  position:fixed;inset:0 0 auto;z-index:50;
  padding:18px 0;
  transition:padding .35s var(--ease),background .35s var(--ease),backdrop-filter .35s;
}
.site-header.scrolled{
  padding:10px 0;
  background:rgba(8,8,16,.72);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  box-shadow:0 1px 0 rgba(255,255,255,.06);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}

.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{width:40px;height:40px;flex:none}
.brand-mark img{width:100%;height:100%;object-fit:contain}
.brand-mark svg{width:100%;height:100%}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.06em;color:#fff}
.brand-text em{font-style:normal;font-size:9px;letter-spacing:.28em;color:rgba(255,255,255,.45);margin-top:4px}
.site-footer .brand-text strong{color:#fff}
.site-footer .brand-text em{color:rgba(255,255,255,.42)}

.nav{display:flex;align-items:center;gap:6px}
.nav a{
  position:relative;padding:9px 14px;border-radius:999px;
  font-size:14px;color:rgba(255,255,255,.68);
  transition:color .25s,background .25s;
}
.nav a:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav a.nav-ext::after{
  content:"↗";font-size:11px;margin-left:5px;opacity:.55;
  display:inline-block;transform:translateY(-1px);
}
.nav a.nav-ext:hover::after{opacity:.95}
.nav a.nav-cta{
  margin-left:10px;padding:10px 20px;
  color:#0b0b16;font-weight:600;
  background:#fff;
  box-shadow:0 0 0 1px rgba(255,255,255,.4),0 8px 24px -8px rgba(255,255,255,.45);
}
.nav a.nav-cta:hover{background:var(--cyan);color:#04222a;box-shadow:0 8px 30px -6px rgba(34,211,238,.6)}

.menu-btn{
  display:none;width:42px;height:42px;border:0;border-radius:12px;
  background:rgba(255,255,255,.08);cursor:pointer;position:relative;
}
.menu-btn span{
  position:absolute;left:12px;width:18px;height:1.5px;background:#fff;border-radius:2px;
  transition:transform .3s var(--ease),top .3s var(--ease);
}
.menu-btn span:nth-child(1){top:17px}
.menu-btn span:nth-child(2){top:24px}
.menu-btn[aria-expanded="true"] span:nth-child(1){top:21px;transform:rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){top:21px;transform:rotate(-45deg)}

/* =========================================================
   Hero
   ========================================================= */
.hero{
  position:relative;
  background:#07070f;
  color:#fff;
  padding:156px 0 0;
  overflow:hidden;
  isolation:isolate;
}
.hero-bg{position:absolute;inset:0;z-index:-1;overflow:hidden}
.orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55}
.orb-1{width:640px;height:640px;left:-12%;top:-18%;background:radial-gradient(circle,rgba(91,91,255,.55),transparent 65%)}
.orb-2{width:560px;height:560px;right:-6%;top:2%;background:radial-gradient(circle,rgba(34,211,238,.28),transparent 65%)}
.orb-3{width:700px;height:700px;left:34%;bottom:-46%;background:radial-gradient(circle,rgba(30,32,135,.55),transparent 68%)}
.grid-mask{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 30%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 30%,#000 20%,transparent 78%);
}
.noise{
  position:absolute;inset:0;opacity:.16;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}

.hero-inner{
  display:grid;grid-template-columns:1.06fr .94fr;
  gap:64px;align-items:center;
  padding-bottom:88px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 14px;border-radius:999px;
  font-size:12.5px;letter-spacing:.06em;
  color:rgba(255,255,255,.78);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  backdrop-filter:blur(6px);
}
.eyebrow.dark{color:#3d4460;border-color:rgba(30,32,135,.16);background:rgba(30,32,135,.04)}
.pulse-dot{position:relative;width:7px;height:7px;border-radius:50%;background:var(--cyan);flex:none}
.pulse-dot::after{
  content:"";position:absolute;inset:-4px;border-radius:50%;
  border:1px solid rgba(34,211,238,.55);
  animation:pulse 2.4s ease-out infinite;
}
@keyframes pulse{0%{transform:scale(.5);opacity:.9}70%{transform:scale(1.5);opacity:0}100%{opacity:0}}

.hero h1{
  margin:26px 0 0;
  font-size:clamp(42px,5.2vw,74px);
  line-height:1.08;
  font-weight:700;
  letter-spacing:-.025em;
}
.grad-text{
  background:linear-gradient(100deg,#b9b9ff 0%,#7f7fff 32%,#5bd9ee 72%,#9af3ff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  max-width:560px;margin:26px 0 0;
  font-size:16.5px;line-height:1.85;
  color:rgba(255,255,255,.62);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:52px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .3s var(--ease),background .3s,border-color .3s;
}
.btn svg{width:18px;height:18px;transition:transform .25s var(--ease)}
.btn:hover{transform:translateY(-2px)}
.btn:hover svg{transform:translateX(3px)}
.btn-primary{
  color:#08080e;
  background:linear-gradient(100deg,#ffffff,#d8d8ff 55%,#a9f2ff);
  box-shadow:0 14px 40px -12px rgba(160,160,255,.55);
}
.btn-primary:hover{box-shadow:0 20px 50px -12px rgba(160,160,255,.8)}
.btn-ghost{
  color:#fff;border-color:rgba(255,255,255,.2);
  background:rgba(255,255,255,.03);backdrop-filter:blur(8px);
}
.btn-ghost:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.38)}
.btn-block{width:100%}

.hero-stats{
  display:grid;grid-template-columns:repeat(4,auto);
  gap:34px;justify-content:start;
  margin:52px 0 0;padding-top:30px;
  border-top:1px solid rgba(255,255,255,.1);
}
.hero-stats div{display:flex;flex-direction:column;gap:7px}
.hero-stats dt{font-size:clamp(19px,2vw,24px);font-weight:700;letter-spacing:-.02em;color:#fff}
.hero-stats dd{margin:0;font-size:12.5px;color:rgba(255,255,255,.45);letter-spacing:.04em}

/* ---- hero console ---- */
.hero-visual{position:relative;perspective:1200px}
.console{
  position:relative;border-radius:20px;overflow:hidden;
  background:linear-gradient(160deg,rgba(23,23,42,.92),rgba(10,10,22,.96));
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 50px 120px -40px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.08);
  transform:rotateY(-6deg) rotateX(3deg);
  transition:transform .6s var(--ease);
}
.hero-visual:hover .console{transform:rotateY(-2deg) rotateX(1deg) translateY(-4px)}
.console::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(120deg,rgba(255,255,255,.06),transparent 40%);
}
.console-top{
  display:flex;align-items:center;gap:12px;
  padding:13px 16px;border-bottom:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.02);
}
.console-dots{display:flex;gap:6px}
.console-dots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.16)}
.console-dots i:first-child{background:rgba(255,95,86,.7)}
.console-dots i:nth-child(2){background:rgba(255,189,46,.65)}
.console-dots i:nth-child(3){background:rgba(39,201,63,.6)}
.console-title{font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;color:rgba(255,255,255,.4);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.console-live{
  margin-left:auto;display:flex;align-items:center;gap:6px;
  font-size:10.5px;color:rgba(90,240,190,.9);white-space:nowrap;
}
.console-live i{width:6px;height:6px;border-radius:50%;background:#3ee6a8;box-shadow:0 0 8px #3ee6a8}
.console-body{padding:14px 16px 10px}
.console-head{
  display:grid;grid-template-columns:1.55fr .95fr .6fr .5fr;
  gap:8px;padding:0 2px 9px;
  font-size:10px;letter-spacing:.08em;color:rgba(255,255,255,.3);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.model-row{
  display:grid;grid-template-columns:1.55fr .95fr .6fr .5fr;
  gap:8px;align-items:center;
  padding:10px 2px;font-size:11.5px;
  border-bottom:1px solid rgba(255,255,255,.045);
}
.mrow-name{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.82);font-weight:500}
.mtile{
  display:inline-flex;align-items:center;justify-content:center;
  width:21px;height:21px;border-radius:6px;flex:none;
  font-style:normal;font-weight:700;font-size:10.5px;color:#fff;
  background:linear-gradient(140deg,#4c4cff,#1e2087);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.28);
}
.mtile.lg{width:46px;height:46px;border-radius:13px;font-size:17px}
.t-mini{background:linear-gradient(140deg,#ff9a6b,#e0452a)}
.t-zhipu{background:linear-gradient(140deg,#5f8bff,#2437b8)}
.t-qwen{background:linear-gradient(140deg,#8a6bff,#5b2bd6)}
.t-seed{background:linear-gradient(140deg,#37e0b0,#0b8f70)}
.t-ds{background:linear-gradient(140deg,#6f8dff,#1d3a9e)}
.t-kimi{background:linear-gradient(140deg,#ff7ec7,#b02c8a)}
.mrow-route{
  display:inline-flex;align-items:center;gap:5px;
  font-size:10px;color:rgba(255,255,255,.45);
}
.reroute{width:5px;height:5px;border-radius:50%;background:#ffc457;box-shadow:0 0 6px #ffc457}
.mrow-lat{font-family:var(--mono);font-size:10.5px;color:rgba(255,255,255,.5)}
.ok{font-size:10px;color:#43e3a4}
.warn{font-size:10px;color:#ffc457}
.model-row.hot{background:linear-gradient(90deg,rgba(255,196,87,.07),transparent)}

.console-chart{margin-top:14px;padding:12px;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06)}
.chart-head{display:flex;align-items:baseline;justify-content:space-between;font-size:10.5px;color:rgba(255,255,255,.45)}
.chart-head strong{font-size:15px;color:#dff9ff;font-family:var(--mono);letter-spacing:-.02em}
.bars{display:flex;align-items:flex-end;gap:6px;height:44px;margin-top:10px}
.bars i{
  flex:1;height:var(--h);border-radius:3px 3px 1px 1px;
  background:linear-gradient(180deg,#54e7ff,rgba(91,91,255,.5));
  opacity:.85;
  animation:barGrow 1.2s var(--ease) both;
  transform-origin:bottom;
}
@keyframes barGrow{from{transform:scaleY(.15);opacity:0}to{transform:scaleY(1);opacity:.85}}
.console-foot{
  display:flex;gap:18px;padding:11px 18px;
  border-top:1px solid rgba(255,255,255,.07);
  font-size:10.5px;color:rgba(255,255,255,.42);
  background:rgba(255,255,255,.02);
}
.console-foot span{display:flex;align-items:center;gap:6px}
.dot-cyan{width:5px;height:5px;border-radius:50%;background:var(--cyan);flex:none}

.float-card{
  position:absolute;z-index:2;padding:12px 16px;border-radius:14px;
  background:rgba(16,16,30,.82);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(14px);
  box-shadow:0 20px 50px -20px rgba(0,0,0,.8);
  display:flex;flex-direction:column;gap:4px;
  animation:floaty 7s ease-in-out infinite;
}
.fc-1{left:-34px;top:24%;animation-delay:-1s}
.fc-2{right:-26px;bottom:16%;animation-delay:-3.5s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.fc-label{font-size:10px;letter-spacing:.06em;color:rgba(255,255,255,.45)}
.float-card strong{font-size:18px;letter-spacing:-.02em;color:#fff}
.float-card.fc-1 strong{color:#5cf0b8}

/* ---- vendor strip ---- */
.vendor-strip{
  border-top:1px solid rgba(255,255,255,.08);
  border-bottom:1px solid rgba(255,255,255,.06);
  background:rgba(255,255,255,.015);
  overflow:hidden;
  padding:20px 0;
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.vendor-track{
  display:flex;align-items:center;gap:26px;width:max-content;
  animation:marquee 42s linear infinite;
}
.vendor-strip:hover .vendor-track{animation-play-state:paused}
.vendor{font-size:15px;font-weight:600;letter-spacing:.02em;color:rgba(255,255,255,.42);white-space:nowrap;transition:color .3s}
.vendor:hover{color:#fff}
.sep{color:rgba(255,255,255,.14);font-size:12px}
@keyframes marquee{to{transform:translateX(-50%)}}

/* =========================================================
   Sections
   ========================================================= */
.section{padding:112px 0;position:relative}
.section-soft{background:var(--paper-soft)}
.section-head{max-width:720px;margin-bottom:56px}
.section-head h2{
  margin:20px 0 0;
  font-size:clamp(30px,3.6vw,46px);
  line-height:1.2;letter-spacing:-.025em;font-weight:700;
}
.section-sub{margin:18px 0 0;font-size:16px;line-height:1.85;color:var(--muted)}
.section-head.light{color:#fff}
.section-head.light .section-sub{color:rgba(255,255,255,.58)}
.section-head.light .eyebrow{color:rgba(255,255,255,.78)}
.mini-label{
  display:inline-block;font-size:11.5px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--brand-2);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;margin-top:26px;
  font-size:14.5px;font-weight:600;color:var(--brand-2);
}
.link-arrow span{transition:transform .25s var(--ease)}
.link-arrow:hover span{transform:translateX(5px)}

/* ---------- model grid ---------- */
.model-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.model-card{
  position:relative;padding:28px 26px 26px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
  overflow:hidden;
}
.model-card::before{
  content:"";position:absolute;inset:0;opacity:0;
  background:radial-gradient(500px 220px at 20% 0%,rgba(91,91,255,.08),transparent 70%);
  transition:opacity .4s;
}
.model-card:hover{transform:translateY(-5px);border-color:rgba(91,91,255,.28);box-shadow:var(--shadow)}
.model-card:hover::before{opacity:1}
.mc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.brand-logo{
  width:52px;height:52px;border-radius:15px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,#fbfbfe,#f3f5fa);
  border:1px solid rgba(10,10,19,.08);
  box-shadow:inset 0 1px 0 #fff,0 6px 16px -10px rgba(10,10,30,.25);
}
.brand-logo img{width:34px;height:34px;object-fit:contain}
.mrow-logo{width:19px;height:19px;object-fit:contain;flex:none;border-radius:5px}
.tag{
  font-size:11px;padding:5px 10px;border-radius:999px;
  color:var(--muted);background:var(--paper-soft);border:1px solid var(--line);
}
.model-card h3{margin:0 0 10px;font-size:20px;letter-spacing:-.01em}
.model-card p{margin:0;font-size:14px;line-height:1.75;color:var(--muted)}
.mc-list{list-style:none;margin:18px 0 0;padding:16px 0 0;border-top:1px dashed var(--line);display:flex;flex-wrap:wrap;gap:8px}
.mc-list li{font-size:12px;color:var(--muted);background:rgba(30,32,135,.045);padding:5px 10px;border-radius:7px}

/* ---------- feature band ---------- */
.feature-band{
  margin-top:20px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:44px;border-radius:26px;
  background:linear-gradient(150deg,#0c0c18,#12122a 60%,#0e1b2c);
  color:#fff;overflow:hidden;position:relative;
}
.feature-band::before{
  content:"";position:absolute;width:420px;height:420px;right:-80px;top:-160px;
  background:radial-gradient(circle,rgba(91,91,255,.4),transparent 65%);filter:blur(30px);
}
.fb-copy{position:relative}
.fb-copy .mini-label{color:var(--cyan)}
.fb-copy h3{margin:14px 0 12px;font-size:29px;letter-spacing:-.02em;line-height:1.3}
.fb-copy p{margin:0;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.58)}
.check-list{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:12px}
.check-list li{position:relative;padding-left:24px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.6}
.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:13px;height:13px;border-radius:50%;
  background:rgba(34,211,238,.14);border:1px solid rgba(34,211,238,.5);
}
.check-list li::after{
  content:"";position:absolute;left:4px;top:10px;width:5px;height:3px;
  border-left:1.4px solid var(--cyan);border-bottom:1.4px solid var(--cyan);
  transform:rotate(-45deg);
}
.check-list.light li{color:rgba(255,255,255,.72)}
.fb-copy .link-arrow{color:var(--cyan)}

.fb-code{
  position:relative;border-radius:16px;overflow:hidden;
  background:#07070e;border:1px solid rgba(255,255,255,.12);
  box-shadow:0 40px 80px -40px #000;
}
.code-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03)}
.code-bar i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.16)}
.code-bar span{margin-left:8px;font-family:var(--mono);font-size:10.5px;color:rgba(255,255,255,.35)}
.fb-code pre{margin:0;padding:20px;overflow-x:auto}
.fb-code code{font-family:var(--mono);font-size:11.5px;line-height:1.85;color:#cfd6e6;white-space:pre}
.c-cm{color:#5f6b85}
.c-kw{color:#c792ea}
.c-str{color:#7ee7c7}
.code-status{
  display:flex;align-items:center;gap:8px;
  padding:10px 16px;border-top:1px solid rgba(255,255,255,.08);
  font-family:var(--mono);font-size:10.5px;color:rgba(255,255,255,.4);
  background:rgba(34,211,238,.04);
}

/* =========================================================
   Agent dark section
   ========================================================= */
.section-dark{
  color:#fff;background:#08080f;overflow:hidden;isolation:isolate;
}
.dark-bg{position:absolute;inset:0;z-index:-1;overflow:hidden}
.orb-a{width:720px;height:720px;left:-16%;top:-10%;background:radial-gradient(circle,rgba(30,32,135,.6),transparent 65%);opacity:.7}
.orb-b{width:600px;height:600px;right:-10%;bottom:-24%;background:radial-gradient(circle,rgba(34,211,238,.2),transparent 65%);opacity:.6}

.agent-tabs{
  display:flex;gap:6px;flex-wrap:wrap;
  padding:6px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  width:max-content;max-width:100%;margin-bottom:36px;
}
.tab{
  border:0;background:transparent;cursor:pointer;
  padding:11px 22px;border-radius:999px;
  font-size:14px;color:rgba(255,255,255,.6);
  transition:background .3s,color .3s,box-shadow .3s;
}
.tab:hover{color:#fff}
.tab.active{
  color:#08080f;font-weight:600;
  background:linear-gradient(100deg,#fff,#c9f7ff);
  box-shadow:0 8px 24px -10px rgba(180,240,255,.6);
}
.agent-panel{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.agent-panel[hidden]{display:none}
.ap-copy h3{margin:14px 0 14px;font-size:clamp(24px,2.4vw,32px);line-height:1.3;letter-spacing:-.02em}
.ap-copy>p{margin:0;font-size:15px;line-height:1.85;color:rgba(255,255,255,.58)}
.ap-copy .check-list{margin-top:24px}
.metrics{display:flex;gap:44px;margin-top:30px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1)}
.metrics div{display:flex;flex-direction:column;gap:5px}
.metrics strong{font-size:28px;letter-spacing:-.02em;background:linear-gradient(100deg,#fff,#7ee7ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.metrics span{font-size:12px;color:rgba(255,255,255,.42)}

.ap-visual{position:relative}
.mock-window{
  border-radius:18px;padding:20px;
  background:linear-gradient(160deg,rgba(22,22,40,.9),rgba(10,10,20,.95));
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 40px 100px -40px rgba(0,0,0,.9);
  min-height:360px;
}
.mw-head{
  display:flex;align-items:center;gap:9px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.75);
  padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.08);
}
.mw-head em{font-style:normal;margin-left:auto;font-size:10.5px;color:rgba(34,211,238,.8)}
.mw-dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(34,211,238,.8)}
.chat-line{margin-top:16px;max-width:88%;font-size:12.5px;line-height:1.75;border-radius:12px;padding:12px 14px}
.chat-line.user{margin-left:auto;background:rgba(91,91,255,.24);border:1px solid rgba(120,120,255,.3);color:rgba(255,255,255,.85);border-bottom-right-radius:4px}
.chat-line.ai{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);color:rgba(255,255,255,.72);border-top-left-radius:4px}
.ai-badge{display:inline-flex;align-items:center;justify-content:center;font-size:9px;font-weight:700;color:#08080f;background:var(--cyan);padding:2px 6px;border-radius:5px;margin-right:7px;vertical-align:1px}
.file-chip{margin-top:10px;display:inline-block;padding:6px 10px;border-radius:6px;background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.28);color:#8ceeff;font-size:11px}

.kanban{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}
.kb-col{display:flex;flex-direction:column;gap:7px;padding:10px;border-radius:10px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06)}
.kb-col b{font-size:10.5px;font-weight:500;color:rgba(255,255,255,.4);margin-bottom:3px}
.kb-col span{font-size:11px;padding:8px 9px;border-radius:7px;background:rgba(255,255,255,.055);color:rgba(255,255,255,.7);border:1px solid rgba(255,255,255,.05)}
.kb-col span.doing{background:rgba(91,91,255,.18);border-color:rgba(120,120,255,.28)}
.kb-col span.done{color:rgba(90,240,190,.9);background:rgba(62,230,168,.08);border-color:rgba(62,230,168,.18)}
.mw-tip{margin-top:16px;padding:10px 12px;border-radius:9px;font-size:11px;line-height:1.6;color:rgba(255,255,255,.5);background:rgba(255,196,87,.06);border:1px solid rgba(255,196,87,.16)}

.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.vg-item{
  position:relative;height:94px;border-radius:10px;
  background:
    radial-gradient(circle at 30% 20%,rgba(255,126,199,.4),transparent 55%),
    radial-gradient(circle at 75% 80%,rgba(34,211,238,.4),transparent 55%),
    #15152a;
  border:1px solid rgba(255,255,255,.08);
  overflow:hidden;
}
.vg-item:nth-child(2){background:radial-gradient(circle at 70% 30%,rgba(91,91,255,.5),transparent 55%),radial-gradient(circle at 20% 80%,rgba(34,211,238,.3),transparent 55%),#15152a}
.vg-item:nth-child(3){background:radial-gradient(circle at 30% 70%,rgba(255,196,87,.35),transparent 55%),radial-gradient(circle at 80% 20%,rgba(91,91,255,.4),transparent 55%),#15152a}
.vg-item:nth-child(4){background:radial-gradient(circle at 60% 60%,rgba(62,230,168,.35),transparent 55%),radial-gradient(circle at 20% 20%,rgba(255,126,199,.35),transparent 55%),#15152a}
.vg-item span{position:absolute;left:8px;bottom:7px;font-family:var(--mono);font-size:10px;color:rgba(255,255,255,.6)}
.play{position:absolute;inset:0;margin:auto;width:26px;height:26px;border-radius:50%;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(4px)}
.play::after{content:"";position:absolute;left:10px;top:8px;border-left:7px solid #fff;border-top:5px solid transparent;border-bottom:5px solid transparent}
.progress{margin-top:14px;height:5px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden}
.progress i{display:block;height:100%;width:62%;border-radius:99px;background:linear-gradient(90deg,#5b5bff,#22d3ee);animation:prog 5s ease-in-out infinite alternate}
@keyframes prog{from{width:24%}to{width:92%}}

.flow{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:34px}
.flow .node{padding:12px 14px;border-radius:10px;font-size:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);color:rgba(255,255,255,.72)}
.flow .node.accent{background:rgba(34,211,238,.1);border-color:rgba(34,211,238,.35);color:#9ff2ff}
.flow i{color:rgba(255,255,255,.25);font-style:normal}

/* =========================================================
   Solutions
   ========================================================= */
.solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.sol-card{
  position:relative;padding:30px 28px;border-radius:var(--radius);
  border:1px solid var(--line);background:linear-gradient(180deg,#fff,#fcfcff);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
}
.sol-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(91,91,255,.25)}
.sol-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:13px;
  background:var(--grad-soft);border:1px solid rgba(91,91,255,.16);
  color:var(--brand);margin-bottom:20px;
}
.sol-icon svg{width:23px;height:23px}
.sol-card h3{margin:0 0 9px;font-size:19px;letter-spacing:-.01em}
.sol-card p{margin:0;font-size:14px;line-height:1.75;color:var(--muted)}
.sol-tag{display:inline-block;margin-top:18px;font-size:11.5px;letter-spacing:.04em;color:var(--brand-2)}

/* =========================================================
   Process
   ========================================================= */
.process-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:72px;align-items:start}
.process-intro h2{margin:20px 0 0;font-size:clamp(30px,3.4vw,44px);line-height:1.2;letter-spacing:-.025em}
.process-intro .section-sub{margin-top:18px}
.steps{list-style:none;margin:0;padding:0;position:relative}
.steps::before{content:"";position:absolute;left:23px;top:14px;bottom:14px;width:1px;background:linear-gradient(180deg,rgba(91,91,255,.4),rgba(34,211,238,.35),transparent)}
.steps li{display:flex;gap:24px;padding:0 0 38px;position:relative}
.steps li:last-child{padding-bottom:0}
.step-no{
  position:relative;z-index:1;flex:none;
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--brand-2);
  background:#fff;border:1px solid rgba(91,91,255,.24);
  box-shadow:0 8px 24px -12px rgba(91,91,255,.5);
}
.steps h3{margin:11px 0 7px;font-size:18px}
.steps p{margin:0;font-size:14px;line-height:1.75;color:var(--muted);max-width:420px}

/* =========================================================
   Cases
   ========================================================= */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.case-card{
  padding:34px 32px;border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(160deg,#fff,#f8f9ff);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.case-tag{display:inline-block;font-size:11px;letter-spacing:.06em;color:var(--brand-2);background:rgba(91,91,255,.07);border:1px solid rgba(91,91,255,.14);padding:5px 10px;border-radius:999px}
.case-card h3{margin:18px 0 10px;font-size:21px;line-height:1.45;letter-spacing:-.01em}
.case-card p{margin:0;font-size:14px;line-height:1.78;color:var(--muted)}
.case-nums{display:flex;gap:46px;margin-top:24px;padding-top:20px;border-top:1px dashed var(--line)}
.case-nums div{display:flex;flex-direction:column;gap:4px}
.case-nums strong{font-size:26px;letter-spacing:-.02em;color:var(--brand)}
.case-nums span{font-size:12px;color:var(--muted-2)}

.quote{
  margin:64px 0 0;padding:48px clamp(24px,5vw,64px);
  border-radius:26px;position:relative;
  background:linear-gradient(140deg,#0c0c18,#14142c);
  color:#fff;overflow:hidden;
}
.quote::before{
  content:"“";position:absolute;top:-30px;left:28px;
  font-size:180px;line-height:1;color:rgba(91,91,255,.22);font-family:Georgia,serif;
}
.quote blockquote{
  position:relative;margin:0;font-size:clamp(20px,2.4vw,28px);line-height:1.65;
  letter-spacing:-.01em;font-weight:500;max-width:880px;
}
.quote figcaption{display:flex;align-items:center;gap:14px;margin-top:30px}
.avatar{
  width:42px;height:42px;border-radius:50%;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad);font-size:14px;font-weight:700;color:#08080f;
}
.quote figcaption div{display:flex;flex-direction:column;gap:4px}
.quote figcaption strong{font-size:14px}
.quote figcaption em{font-style:normal;font-size:12px;color:rgba(255,255,255,.45)}

/* =========================================================
   About
   ========================================================= */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:72px;align-items:center}
.about-copy h2{margin:20px 0 0;font-size:clamp(30px,3.4vw,44px);line-height:1.2;letter-spacing:-.025em}
.about-copy p{margin:18px 0 0;font-size:15px;line-height:1.9;color:var(--muted);max-width:520px}
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px;padding-top:28px;border-top:1px solid var(--line)}
.values h3{margin:0 0 7px;font-size:15px}
.values p{margin:0;font-size:12.5px;line-height:1.7;color:var(--muted)}

.about-card{
  border-radius:24px;padding:26px;
  background:linear-gradient(160deg,#0d0d1a,#111128 60%,#0b1a26);
  color:#fff;border:1px solid rgba(255,255,255,.1);
  box-shadow:0 40px 100px -50px rgba(10,10,40,.7);
  position:relative;overflow:hidden;
}
.about-card::before{content:"";position:absolute;width:360px;height:360px;right:-120px;top:-120px;background:radial-gradient(circle,rgba(91,91,255,.4),transparent 65%);filter:blur(20px)}
.ac-head{display:flex;justify-content:space-between;align-items:center;position:relative;font-size:12.5px;color:rgba(255,255,255,.65)}
.ac-badge{font-family:var(--mono);font-size:10px;padding:4px 8px;border-radius:6px;border:1px solid rgba(34,211,238,.3);color:var(--cyan)}
.radar{position:relative;height:290px;margin:6px 0 0}
.radar-ring{
  position:absolute;left:50%;top:50%;border-radius:50%;
  border:1px solid rgba(255,255,255,.09);transform:translate(-50%,-50%);
}
.r1{width:110px;height:110px;background:rgba(91,91,255,.08)}
.r2{width:190px;height:190px}
.r3{width:270px;height:270px}
.radar-core{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:82px;height:82px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:13px;font-weight:600;line-height:1.3;
  background:radial-gradient(circle at 30% 25%,#6a6aff,#1e2087);
  box-shadow:0 0 50px rgba(91,91,255,.6),inset 0 1px 0 rgba(255,255,255,.3);
}
.radar-tag{
  position:absolute;font-size:10.5px;padding:5px 10px;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.8);white-space:nowrap;
  backdrop-filter:blur(6px);
}
.rt1{left:4%;top:22%}
.rt2{right:2%;top:16%;border-color:rgba(34,211,238,.32);color:#9ff2ff}
.rt3{left:0;bottom:20%}
.rt4{right:6%;bottom:14%}
.rt5{left:38%;top:2%}
.ac-foot{display:flex;justify-content:space-between;gap:10px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);font-size:11px;color:rgba(255,255,255,.45);position:relative}
.ac-foot strong{display:block;font-size:16px;color:#fff;margin-bottom:3px;font-weight:600}

/* =========================================================
   Contact
   ========================================================= */
.contact{
  background:#08080f;color:#fff;position:relative;overflow:hidden;
}
.contact::before{
  content:"";position:absolute;width:800px;height:800px;left:-20%;top:-30%;
  background:radial-gradient(circle,rgba(30,32,135,.55),transparent 65%);filter:blur(40px);
}
.contact::after{
  content:"";position:absolute;width:600px;height:600px;right:-10%;bottom:-40%;
  background:radial-gradient(circle,rgba(34,211,238,.18),transparent 65%);filter:blur(40px);
}
.contact-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:start}
.contact-copy h2{margin:22px 0 0;font-size:clamp(32px,3.8vw,48px);line-height:1.22;letter-spacing:-.025em}
.contact-copy>p{margin:18px 0 0;font-size:15px;line-height:1.8;color:rgba(255,255,255,.55);max-width:440px}
.contact-list{list-style:none;margin:40px 0 0;padding:0;display:grid;gap:18px}
.contact-list li{display:flex;align-items:baseline;gap:18px;font-size:14px;color:rgba(255,255,255,.8)}
.contact-list a{color:#fff;border-bottom:1px solid rgba(255,255,255,.2);padding-bottom:2px;transition:border-color .25s,color .25s}
.contact-list a:hover{color:var(--cyan);border-color:var(--cyan)}
.ci{flex:none;width:72px;font-size:11.5px;letter-spacing:.06em;color:rgba(255,255,255,.35)}

.contact-form{
  padding:34px;border-radius:22px;
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(16px);
  display:grid;gap:16px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form label{display:flex;flex-direction:column;gap:8px;font-size:12px;letter-spacing:.04em;color:rgba(255,255,255,.55)}
.contact-form input,.contact-form select,.contact-form textarea{
  width:100%;padding:13px 15px;border-radius:11px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  color:#fff;font:inherit;font-size:13.5px;
  transition:border-color .25s,background .25s,box-shadow .25s;
  appearance:none;
}
.contact-form textarea{resize:vertical;min-height:84px}
.contact-form select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238a90a0' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 15px center;
}
.contact-form select option{color:#111}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:rgba(255,255,255,.26)}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{
  outline:none;border-color:rgba(34,211,238,.6);
  background:rgba(255,255,255,.08);
  box-shadow:0 0 0 3px rgba(34,211,238,.12);
}
.contact-form .btn{margin-top:4px}
.form-note{margin:0;font-size:11px;color:rgba(255,255,255,.3);text-align:center}
.form-success{
  padding:12px 14px;border-radius:10px;font-size:13px;
  color:#8ff5cd;background:rgba(62,230,168,.08);border:1px solid rgba(62,230,168,.25);
}
.form-error{
  padding:12px 14px;border-radius:10px;font-size:13px;
  color:#ffb4b4;background:rgba(255,90,90,.08);border:1px solid rgba(255,90,90,.25);
}
.contact-form button[type="submit"]{height:50px}

/* =========================================================
   Footer
   ========================================================= */
.site-footer{background:#050509;color:rgba(255,255,255,.55);border-top:1px solid rgba(255,255,255,.08)}
.footer-top{
  display:grid;grid-template-columns:1.1fr 1.6fr;gap:64px;
  padding:62px 0 46px;
}
.footer-brand p{margin:18px 0 0;font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.4);max-width:320px}
.footer-contact{display:flex;flex-direction:column;gap:8px;margin-top:18px;font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.42)}
.footer-contact a{transition:color .25s}
.footer-contact a:hover{color:var(--cyan)}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.footer-cols h3{margin:0 0 16px;font-size:12.5px;font-weight:600;letter-spacing:.08em;color:#fff}
.footer-cols a{display:block;font-size:13px;color:rgba(255,255,255,.42);margin-bottom:11px;transition:color .25s}
.footer-cols a:hover{color:var(--cyan)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center;
  padding:22px 0;border-top:1px solid rgba(255,255,255,.07);
  font-size:11.5px;color:rgba(255,255,255,.3);
}
.foot-note{margin-left:auto}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width:1080px){
  .hero-inner{grid-template-columns:1fr;gap:64px}
  .hero-copy{max-width:720px}
  .hero-visual{max-width:600px;width:100%}
  .console{transform:none}
  .float-card{display:none}
  .model-grid{grid-template-columns:1fr 1fr}
  .solution-grid{grid-template-columns:1fr 1fr}
  .process-wrap{grid-template-columns:1fr;gap:48px}
  .about-grid{grid-template-columns:1fr;gap:48px}
  .about-visual{max-width:540px}
  .contact-grid{grid-template-columns:1fr;gap:48px}
  .feature-band{grid-template-columns:1fr;gap:36px}
  .agent-panel{grid-template-columns:1fr;gap:36px}
  .ap-visual{max-width:620px}
}
@media (max-width:980px){
  .container{width:calc(100% - 36px)}
  .section{padding:84px 0}
  .site-header{padding:12px 0}
  .menu-btn{display:block}
  .nav{
    position:fixed;left:12px;right:12px;top:66px;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:10px;border-radius:18px;
    background:rgba(12,12,24,.97);
    border:1px solid rgba(255,255,255,.12);
    box-shadow:0 30px 60px -20px rgba(0,0,0,.8);
    backdrop-filter:blur(20px);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
  }
  .nav.open{opacity:1;visibility:visible;transform:none}
  .nav a{padding:13px 16px;border-radius:10px;font-size:15px}
  .nav a.nav-cta{margin:6px 0 0;text-align:center}
  .hero{padding-top:120px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:24px 20px}
  .model-grid,.solution-grid,.case-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:40px}
  .quote{margin-top:44px}
  .case-card{padding:28px 24px}
}
@media (max-width:560px){
  .hero h1{font-size:38px}
  .hero-sub{font-size:15px}
  .hero-actions .btn{width:100%}
  .hero-stats dt{font-size:20px}
  .section-head h2{font-size:28px}
  .model-card{padding:24px 22px}
  .feature-band{padding:28px 22px;border-radius:20px}
  .fb-copy h3{font-size:24px}
  .agent-tabs{width:100%;border-radius:16px;justify-content:flex-start}
  .tab{flex:1 1 auto;padding:10px 14px;font-size:13px}
  .mock-window{min-height:0;padding:16px}
  .form-row{grid-template-columns:1fr}
  .contact-form{padding:24px 20px}
  .contact-list li{flex-direction:column;gap:6px}
  .ci{width:auto}
  .values{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr}
  .foot-note{margin-left:0}
  .quote blockquote{font-size:19px}
}

/* dynamic states */
.nav a.current{color:#fff}
.nav a.current:not(.nav-cta)::after{
  content:"";position:absolute;left:50%;bottom:3px;width:14px;height:1.5px;
  transform:translateX(-50%);border-radius:2px;background:var(--cyan);
}
.agent-panel.active{animation:panelIn .5s var(--ease)}
@keyframes panelIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* anchor offset for fixed header */
section[id]{scroll-margin-top:88px}

/* decorative layers must never intercept clicks */
.hero-bg,.hero-bg *,.contact::before,.contact::after,.feature-band::before,
.about-card::before,.quote::before,.steps::before,.radar-ring,.grid-mask,.noise,.orb{
  pointer-events:none;
}

/* =========================================================
   AI 智能化营销福利
   ========================================================= */
.benefit-layout{display:flex;justify-content:space-between;gap:20px;margin-top:4px}
.benefit-cats{width:63.5%;display:flex;flex-wrap:wrap;justify-content:space-between}
.bcat{
  width:48.8%;padding:26px 24px;margin-bottom:16px;
  border:1px solid rgba(255,255,255,.12);border-radius:20px;
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  transition:border-color .35s var(--ease),transform .35s var(--ease);
}
.bcat:hover{border-color:rgba(34,211,238,.35);transform:translateY(-3px)}
.bcat-top{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.bcat h3{margin:0;font-size:19px;color:#fff;letter-spacing:-.01em}
.bcat-top span{font-size:9.5px;letter-spacing:.12em;color:rgba(34,211,238,.8);white-space:nowrap}
.bcat p{margin:10px 0 0;font-size:13px;line-height:1.75;color:rgba(255,255,255,.5)}
.bpills{display:flex;flex-wrap:wrap;gap:7px;margin-top:15px}
.bpills span{
  font-size:11.5px;color:rgba(255,255,255,.7);
  border:1px solid rgba(255,255,255,.15);border-radius:6px;
  padding:4px 8px;line-height:1.4;
}

.benefit-side{width:34.5%}
.benefit-gift{
  position:relative;height:214px;border-radius:22px;padding:27px;
  background:linear-gradient(135deg,#1E2087 0%,#5B5BFF 55%,#22D3EE 100%);
  overflow:hidden;box-shadow:0 30px 70px -30px rgba(91,91,255,.55);
}
.bg-shine{position:absolute;width:260px;height:260px;border-radius:50%;right:-70px;top:-100px;background:rgba(255,255,255,.16)}
.bg-tag{position:relative;font-size:9.5px;letter-spacing:.18em;color:rgba(255,255,255,.72)}
.bg-title{position:relative;margin-top:34px;font-size:31px;font-weight:700;letter-spacing:-.01em;color:#fff}
.bg-sub{position:relative;margin-top:8px;font-size:12px;color:rgba(255,255,255,.75)}
.bg-chip{position:absolute;right:26px;bottom:26px;width:34px;height:26px;border:1px solid rgba(255,255,255,.6);border-radius:5px;background:rgba(255,255,255,.16)}
.bg-foot{position:absolute;left:27px;bottom:26px;font-size:9px;letter-spacing:.12em;color:rgba(255,255,255,.6)}
.benefit-flow{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:13px}
.benefit-flow li{display:flex;gap:12px;align-items:flex-start}
.benefit-flow li>b{
  flex:none;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:10px;font-weight:600;color:var(--cyan);
  background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.25);
}
.benefit-flow strong{display:block;font-size:13.5px;color:#fff;font-weight:600}
.benefit-flow span{display:block;margin-top:3px;font-size:11.8px;line-height:1.6;color:rgba(255,255,255,.42)}

.benefit-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:6px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
}
.benefit-use{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.blabel{font-size:10.5px;letter-spacing:.14em;color:rgba(255,255,255,.32)}
.benefit-use>span:not(.blabel){
  font-size:11.5px;color:rgba(255,255,255,.68);
  border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:5px 11px;
}
.benefit-link{margin-top:0;color:var(--cyan)}
.benefit-note{margin:14px 0 0;font-size:10.5px;color:rgba(255,255,255,.28)}

@media (max-width:1080px){
  .benefit-cats{width:59%}
  .benefit-side{width:38%}
  .bcat{width:48.5%;padding:22px 20px}
}
@media (max-width:940px){
  .benefit-layout{flex-direction:column;gap:4px}
  .benefit-cats,.benefit-side{width:100%}
  .benefit-side{display:flex;gap:18px;margin-top:6px}
  .benefit-gift{width:46%;flex:none;height:200px}
  .benefit-flow{margin-top:0;flex:1;gap:10px}
}
@media (max-width:560px){
  .bcat{width:100%;margin-bottom:12px}
  .benefit-side{flex-direction:column}
  .benefit-gift{width:100%;height:180px}
  .bg-title{margin-top:24px;font-size:27px}
  .benefit-bottom{align-items:flex-start}
}

/* =========================================================
   AI 智能化营销福利 · clean card grid
   ========================================================= */
.bf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:4px}
.bf-card{
  display:flex;flex-direction:column;min-height:332px;
  padding:24px;border-radius:20px;
  border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(165deg,rgba(255,255,255,.06),rgba(255,255,255,.022));
  transition:transform .35s var(--ease),border-color .35s var(--ease),box-shadow .35s var(--ease);
}
.bf-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.32);box-shadow:0 24px 60px -30px rgba(0,0,0,.8)}
.bf-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;margin-bottom:20px}
.bf-img{width:64px;height:64px;border-radius:16px;overflow:hidden;flex:none;box-shadow:0 12px 30px -12px rgba(0,0,0,.55)}
.bf-img img{width:100%;height:100%;display:block}
.bf-tag{font-size:9px;line-height:1.5;letter-spacing:.12em;color:rgba(34,211,238,.72);text-align:right;max-width:76px;padding-top:3px}
.bf-card h3{margin:0;font-size:19px;color:#fff;letter-spacing:-.01em}
.bf-card p{margin:9px 0 0;font-size:12.8px;line-height:1.72;color:rgba(255,255,255,.48);min-height:66px}
.bf-brands{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:16px;border-top:1px solid rgba(255,255,255,.09)}
.bf-brands span{font-size:10.8px;line-height:1.4;color:rgba(255,255,255,.68);border:1px solid rgba(255,255,255,.14);border-radius:5px;padding:4px 7px;white-space:nowrap}
.bf-ai{
  display:flex;align-items:center;gap:30px;margin-top:18px;padding:24px 26px;
  border:1px solid rgba(255,255,255,.12);border-radius:20px;
  background:linear-gradient(120deg,rgba(91,91,255,.18),rgba(34,211,238,.06) 65%,rgba(255,255,255,.02));
}
.bf-ai-copy{width:23%;flex:none}
.bf-ai-copy>span{font-size:9px;letter-spacing:.2em;color:rgba(34,211,238,.8)}
.bf-ai-copy b{display:block;margin-top:7px;font-size:17px;line-height:1.45;color:#fff;letter-spacing:-.01em}
.bf-ai-copy p{margin:7px 0 0;font-size:11.5px;line-height:1.6;color:rgba(255,255,255,.4)}
.bf-steps{flex:1;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.bf-step{padding-left:14px;border-left:1px solid rgba(255,255,255,.14)}
.bf-step b{display:block;font-family:var(--mono);font-size:10px;font-weight:600;color:var(--cyan);letter-spacing:.05em}
.bf-step strong{display:block;margin-top:6px;font-size:13px;color:#fff;font-weight:600}
.bf-step span{display:block;margin-top:4px;font-size:11px;line-height:1.6;color:rgba(255,255,255,.42)}
.bf-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:18px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1)}
.bf-use{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.bf-label{font-size:10.5px;letter-spacing:.14em;color:rgba(255,255,255,.32)}
.bf-use>span:not(.bf-label){font-size:11.5px;color:rgba(255,255,255,.68);border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:5px 11px}
.bf-link{margin-top:0;color:var(--cyan)}
.bf-note{margin:14px 0 0;font-size:10.5px;color:rgba(255,255,255,.28)}

@media (max-width:1080px){
  .bf-grid{grid-template-columns:repeat(2,1fr)}
  .bf-ai{flex-direction:column;align-items:stretch;gap:18px}
  .bf-ai-copy{width:100%}
  .bf-steps{grid-template-columns:repeat(2,1fr);gap:16px}
}
@media (max-width:560px){
  .bf-grid{grid-template-columns:1fr;gap:12px}
  .bf-card{min-height:0;padding:22px 20px}
  .bf-card p{min-height:0}
  .bf-steps{grid-template-columns:1fr}
  .bf-ai{padding:20px}
  .bf-bottom{align-items:flex-start}
}