@font-face{
    font-family:"Inter";
    font-style:normal;
    font-weight:400 700;
    font-display:swap;
    src:url("fonts/inter-UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2") format("woff2");
    unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  :root{
    --paper:#FBFCFE; --dark:#0A0E15;
    --ink:#0B1626; --body:#46566A; --faint:#5F6F82;
    --brand:#1A3A5C; --accent:#2F5D8A; --blue:#5483B3; --blue2:#7DA0CA;
    --warm:#FFD9A8; --green:#19B97E; --line:#E6EDF5;
    --shadow:0 30px 70px -34px rgba(30,60,110,.4);
    --maxw:1200px;
    --font:"Inter","PingFang SC","Microsoft YaHei",Arial,sans-serif;
  }
  html{scroll-behavior:smooth}
  body{font-family:var(--font);background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;line-height:1.5}
  .skip-link{position:absolute;left:16px;top:-48px;z-index:1000;background:var(--brand);color:#fff;padding:10px 14px;border-radius:8px;font-size:13px;font-weight:600;transition:.2s}
  .skip-link:focus{top:16px}
  a{text-decoration:none;color:inherit}
  .ti{display:inline-flex;align-items:center;justify-content:center;width:1em;height:1em;line-height:1;flex:0 0 auto}
  .ti::before{display:inline-flex;align-items:center;justify-content:center;width:1em;height:1em;font-family:var(--font);font-size:.92em;font-weight:700;line-height:1}
  .ti-arrow-right::before{content:"\2192"}
  .ti-world::before{content:"\25ce"}
  .ti-shield-check::before,.ti-lock-check::before{content:"\25c7"}
  .ti-robot::before{content:"AI";font-size:.58em}
  .ti-refresh::before,.ti-history::before{content:"\21bb"}
  .ti-affiliate::before{content:"\2318"}
  .ti-link::before{content:"\223d"}
  .ti-clock-bolt::before{content:"\25f4"}

  /* ---------- 统一排版层级 ---------- */
  .kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.01em}
  .kicker::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--accent);transform:rotate(45deg)}
  h1{font-weight:700;font-size:clamp(40px,4.6vw,68px);line-height:1.1;letter-spacing:-.03em;color:var(--ink);text-wrap:balance}
  h2{font-weight:700;font-size:clamp(32px,3.6vw,52px);line-height:1.12;letter-spacing:-.028em;color:var(--ink);text-wrap:balance}
  .sub{font-size:clamp(16px,1.35vw,19px);line-height:1.65;color:var(--body);font-weight:400;text-wrap:balance}
  .am{color:var(--accent)}
  .section{padding:clamp(72px,8vw,120px) clamp(32px,6vw,96px)}
  .shell{max-width:var(--maxw);margin:0 auto}

  /* ---------- 按钮(全站统一) ---------- */
  .btn{padding:13px 26px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:.2s;border:1px solid transparent;white-space:nowrap}
  .btn.p{background:var(--brand);color:#fff}
  .btn.p:hover{transform:translateY(-1px);box-shadow:0 10px 26px -8px rgba(26,58,92,.5)}
  .btn.g{border-color:#D2DCE8;color:var(--brand);background:rgba(255,255,255,.7)}
  .btn.g:hover{background:#fff;border-color:var(--blue)}
  .cta-row{display:flex;gap:13px;flex-wrap:wrap}

  /* ---------- 段内轻量 CTA(接住高意向点) ---------- */
  .inline-cta{max-width:760px;margin:42px auto 0;display:flex;align-items:center;justify-content:space-between;gap:24px;
    background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 28px;
    box-shadow:0 18px 44px -34px rgba(30,60,110,.4)}
  .inline-cta p{font-size:15px;color:var(--ink);font-weight:500;line-height:1.5}
  .inline-cta .btn{flex-shrink:0}
  @media(max-width:600px){.inline-cta{flex-direction:column;align-items:flex-start;gap:16px;text-align:left}}

  /* ---------- 顶部导航 ---------- */
  .nav{position:fixed;top:0;left:0;right:0;height:64px;z-index:100;display:flex;align-items:center;justify-content:space-between;
    padding:0 clamp(32px,5vw,72px);backdrop-filter:blur(12px);background:rgba(251,252,254,.82);border-bottom:1px solid rgba(40,70,120,.06)}
  .nav .brand{display:flex;align-items:center}
  .nav .brand img{height:26px;width:auto;display:block}
  .nav .links{display:flex;gap:30px;font-size:14px;color:var(--brand)}
  .nav .links a{opacity:.72;transition:.2s}.nav .links a:hover{opacity:1}
  .nav .nav-actions{display:flex;align-items:center;gap:12px}
  .nav .nav-login{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 22px;border:1px solid rgba(26,58,92,.18);border-radius:999px;background:rgba(255,255,255,.72);box-shadow:0 12px 26px -22px rgba(20,50,100,.45);font-size:15px;font-weight:700;color:var(--brand);opacity:.96;transition:background .2s,border-color .2s,box-shadow .2s,transform .2s}
  .nav .nav-login:hover{opacity:1;background:#fff;border-color:rgba(26,58,92,.34);box-shadow:0 16px 32px -24px rgba(20,50,100,.55);transform:translateY(-1px)}
  .nav .nav-cta{font-size:14px;padding:9px 20px}
  @media(max-width:860px){.nav .links{display:none}}
  /* 解决方案下拉菜单 */
  .nav .has-drop{position:relative}
  .nav .has-drop>a::after{content:"⌄";font-size:11px;margin-left:5px;opacity:.6;position:relative;top:-2px}
  .nav .drop{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);min-width:230px;
    background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 24px 56px -28px rgba(20,45,80,.4);
    padding:8px;opacity:0;visibility:hidden;transition:.18s;pointer-events:none;z-index:101}
  .nav .has-drop:hover .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(6px);pointer-events:auto}
  .nav .drop::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}
  .nav .drop a{display:block;padding:9px 14px;border-radius:9px;font-size:13.5px;color:var(--ink);opacity:.9;white-space:nowrap}
  .nav .drop a:hover{background:var(--paper);color:var(--accent);opacity:1}
  .nav .drop .drop-all{margin-top:4px;border-top:1px solid var(--line);padding-top:10px;color:var(--accent);font-weight:600}

  /* ========================================================
     1 · HERO (F1:左文 + 右聊天演示 + 角落渐变氛围)
     ======================================================== */
  /* Hero+LOGO 同一背景块,渐变延伸覆盖跑马灯,零色差 */
  .hero-block{position:relative;overflow:hidden;background:var(--paper)}
  .hero-block .grad{position:absolute;top:-18%;right:-12%;width:60%;height:90%;z-index:0;pointer-events:none;
    background:conic-gradient(from 150deg at 60% 45%,#2f5d8a,#5483B3,#7DA0CA,#bcd2ea,#ffe0b8,#5483B3);
    filter:blur(46px) saturate(1.05);opacity:.40;border-radius:50% 0 40% 30%;animation:drift 22s ease-in-out infinite alternate}
  .hero-block .grad2{position:absolute;bottom:6%;left:-10%;width:42%;height:46%;z-index:0;pointer-events:none;
    background:radial-gradient(circle,rgba(84,131,179,.16),transparent 65%);filter:blur(30px)}
  .hero{position:relative;z-index:2;min-height:calc(100vh - 150px);display:flex;align-items:center;padding:90px clamp(32px,6vw,96px) 30px}
  @keyframes drift{to{transform:translate3d(-2%,3%,0) scale(1.05)}}
  .hero-grid{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;width:100%;
    display:grid;grid-template-columns:1.04fr .96fr;align-items:center;gap:56px}
  .hero-copy .kicker{margin-bottom:22px}
  .hero-copy h1{margin-bottom:0;font-size:clamp(52px,6vw,92px);line-height:1.02}
  .hero-copy .hero-tagline{font-weight:600;font-size:clamp(22px,2.2vw,32px);line-height:1.25;letter-spacing:-.02em;color:var(--ink);margin-top:16px}
  .hero-copy .sub{margin-top:20px;max-width:27em}
  .hero-copy .cta-row{margin-top:32px}
  .hero-copy .trust{margin-top:34px;padding-top:22px;border-top:1px solid rgba(40,70,120,.1);display:flex;gap:24px;flex-wrap:wrap;font-size:13.5px;color:var(--faint)}
  .hero-copy .trust b{color:var(--brand);font-weight:600}

  /* 全渠道原生聊天窗(JS 轮换 WhatsApp / Instagram / TikTok Shop / Amazon) */
  .hero-chat-wrap{width:min(360px,100%);margin-left:auto}
  .hero-chat{border-radius:26px;overflow:hidden;border:1px solid rgba(20,50,100,.12);
    box-shadow:0 40px 90px -30px rgba(20,50,100,.5),0 6px 18px -8px rgba(20,50,100,.15);
    background:#fff;transition:opacity .42s ease,transform .42s ease}
  .hc-sb{display:flex;justify-content:space-between;align-items:center;padding:7px 18px 4px;font-size:12px;font-weight:600}
  .hc-sb .ic{display:flex;gap:5px}.hc-sb .ic i{font-size:13px}
  .hc-hd{display:flex;align-items:center;gap:9px;padding:9px 12px}
  .hc-av{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0}
  .hc-nm{font-size:14px;font-weight:600;line-height:1.15}.hc-st{font-size:11px;line-height:1.2}
  .hc-ic{display:flex;gap:14px;margin-left:auto;font-size:17px}
  .hc-bd{padding:13px 11px 16px;display:flex;flex-direction:column;gap:7px;min-height:216px}
  .hc-bb{max-width:84%;padding:7px 11px 5px;font-size:13px;line-height:1.45;opacity:0;transform:translateY(8px);transition:.4s}
  .hc-bb.in{opacity:1;transform:none}
  .hc-mt{display:block;text-align:right;font-size:9.5px;margin-top:2px;opacity:.6}.hc-mt i{font-size:12px;vertical-align:-2px}
  .hc-card{display:flex;gap:9px;align-items:center;padding:8px;border-radius:9px;margin-bottom:3px}
  .hc-cth{width:42px;height:42px;border-radius:7px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:18px}
  .hc-seen{align-self:flex-end;font-size:10px;color:#8e8e8e;margin-right:4px}
  .hc-typ{align-self:flex-end;display:inline-flex;gap:4px;padding:10px 12px;border-radius:13px}
  .hc-typ i{width:6px;height:6px;border-radius:50%;background:#9aa6b5;animation:blink 1.3s infinite}
  .hc-typ i:nth-child(2){animation-delay:.18s}.hc-typ i:nth-child(3){animation-delay:.36s}
  .hc-dots{display:flex;gap:7px;justify-content:center;margin-top:18px}
  .hc-dots i{width:6px;height:6px;border-radius:50%;background:rgba(20,50,100,.2);transition:.3s}
  .hc-dots i.on{width:20px;border-radius:3px;background:rgba(20,50,100,.5)}
  /* 气泡(JS 复用) */
  .msg{display:flex;gap:8px;align-items:flex-end;opacity:0;transform:translateY(8px);transition:.45s cubic-bezier(.2,.7,.3,1)}
  .msg.show{opacity:1;transform:none}
  .msg.me{flex-direction:row-reverse}
  .msg .av{flex:0 0 26px;width:26px;height:26px;min-width:26px;aspect-ratio:1;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;overflow:hidden}
  .msg .av.ai{background:linear-gradient(135deg,var(--accent),var(--blue));color:#fff}
  .msg .av.u{background:#DCE6F1;color:#5b6b7d}
  .bub{max-width:78%;padding:10px 13px;border-radius:15px;font-size:13px;line-height:1.5}
  .bub.ai{background:#fff;color:#1d2a3a;border:1px solid #E9EFF6;border-bottom-left-radius:5px}
  .bub.u{background:var(--accent);color:#fff;border-bottom-right-radius:5px}
  .chips{display:flex;gap:5px;margin-top:5px;flex-wrap:wrap}
  .chips em{font-style:normal;font-size:10px;padding:2px 8px;border-radius:6px;background:rgba(84,131,179,.12);color:var(--accent);opacity:0;transform:translateY(4px);transition:.3s}
  .chips em.show{opacity:1;transform:none}
  .typing{display:inline-flex;gap:3px;padding:11px 13px}
  .typing i{width:6px;height:6px;border-radius:50%;background:#b8c4d4;animation:blink 1.4s infinite both}
  .typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
  @keyframes blink{0%,60%,100%{opacity:.3}30%{opacity:1}}
  @media(max-width:860px){.hero-grid{grid-template-columns:1fr;gap:40px}.hero-chat-wrap{margin:0 auto}}

  /* ========================================================
     2 · LOGO 墙 (跑马灯)
     ======================================================== */
  .logos{position:relative;z-index:2;padding:6px clamp(32px,6vw,96px) 70px;background:transparent;overflow:hidden}
  .marquee{position:relative;overflow:hidden;-webkit-mask:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent);mask:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent)}
  .track{display:flex;align-items:center;gap:clamp(10px,1.8vw,28px);width:max-content;animation:scroll 130s linear infinite}
  .logos:hover .track{animation-play-state:paused}
  @keyframes scroll{to{transform:translateX(-50%)}}
  .track .lg{flex:0 0 auto;width:230px;height:100px;display:flex;align-items:center;justify-content:center;padding:14px 0}
  .track .lg img{width:100%;height:100%;object-fit:contain;opacity:.85;transition:.3s}
  .track .lg img:hover{opacity:1;transform:scale(1.06)}

  /* ========================================================
     2.5 · 全球服务网络 + 全渠道汇入 (亮色,地球+渠道一屏)
     ======================================================== */
  .globe-sec{background:linear-gradient(180deg,#F4F8FD,#EAF1FB);border-top:1px solid var(--line)}
  .globe-grid{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:.92fr 1.08fr;align-items:center;gap:48px}
  .globe-sec h2{margin-top:22px}
  .globe-sec .sub{margin-top:20px;max-width:26em}
  .globe-points{margin-top:22px;display:flex;flex-direction:column;gap:13px}
  .globe-points .gp{position:relative;margin:0;padding-left:20px;font-size:14px;line-height:1.6;color:var(--body)}
  .globe-points .gp::before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:2px;background:var(--accent);transform:rotate(45deg)}
  .globe-points .gp b{color:var(--ink);font-weight:600;margin-right:8px}
  .globe-tags{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px}
  .globe-tags span{font-size:13px;color:var(--accent);padding:7px 14px;border:1px solid #D5E2F1;border-radius:999px;background:#fff}
  /* 舞台:地球居中 + 渠道图标环绕 */
  .globe-stage{position:relative;aspect-ratio:1;max-width:520px;justify-self:center;width:100%}
  .globe-stage .halo{position:absolute;inset:10%;border-radius:50%;background:radial-gradient(circle at 50% 46%,rgba(84,131,179,.30),rgba(125,160,202,.10) 55%,transparent 72%);filter:blur(28px);z-index:0}
  .globe-viz{position:absolute;z-index:2;inset:4%;display:flex;align-items:center;justify-content:center}
  .globe-viz canvas{display:block;max-width:100%;height:auto!important;cursor:grab}
  .globe-viz canvas:active{cursor:grabbing}
  /* 方案C:渠道扁平网格(只放logo + 一句备注) */
  .chan-flat{margin-top:32px}
  .chan-row{display:flex;flex-wrap:wrap;gap:12px}
  .ci{width:46px;height:46px;border-radius:12px;background:#fff;border:1px solid var(--line);
    box-shadow:0 6px 16px -10px rgba(30,60,110,.3);display:flex;align-items:center;justify-content:center;transition:.2s;
    opacity:.62;animation:ciwave 7s ease-in-out infinite}
  .ci:nth-child(1){animation-delay:0s}.ci:nth-child(2){animation-delay:.25s}.ci:nth-child(3){animation-delay:.5s}
  .ci:nth-child(4){animation-delay:.75s}.ci:nth-child(5){animation-delay:1s}.ci:nth-child(6){animation-delay:1.25s}
  .ci:nth-child(7){animation-delay:1.5s}.ci:nth-child(8){animation-delay:1.75s}.ci:nth-child(9){animation-delay:2s}
  .ci:nth-child(10){animation-delay:2.25s}.ci:nth-child(11){animation-delay:2.5s}.ci:nth-child(12){animation-delay:2.75s}
  @keyframes ciwave{0%,40%,100%{opacity:.62;transform:none;box-shadow:0 6px 16px -10px rgba(30,60,110,.3)}
    14%{opacity:1;transform:translateY(-3px);box-shadow:0 12px 24px -10px rgba(47,93,138,.5)}}
  .ci:hover{transform:translateY(-2px);box-shadow:0 10px 22px -10px rgba(30,60,110,.42);opacity:1;animation-play-state:paused}
  @media(prefers-reduced-motion:reduce){.ci{animation:none;opacity:1}}
  .ci img{width:26px;height:26px;object-fit:contain}
  .ci-voice{color:var(--accent)}
  .ci-voice svg{width:24px;height:24px}
  .chan-hl{color:var(--accent);font-weight:600}
  .chan-note{margin-top:16px;font-size:13.5px;color:var(--faint)}
  @media(max-width:860px){.globe-grid{grid-template-columns:1fr;gap:40px}.globe-stage{max-width:400px}}

  /* ========================================================
     5 · 千锤百炼 (累计数据墙)
     ======================================================== */
  .proof-sec{background:linear-gradient(180deg,#F4F8FD,#EAF1FB);text-align:center}
  .proof-sec .kicker{justify-content:center;display:inline-flex}
  .proof-sec h2{margin:18px auto 0}
  .proof-sec .sub{margin:18px auto 0;max-width:34em}
  .proof-note{margin:24px auto 0;font-size:12.5px;color:var(--faint)}

  /* 顶部实时滚动大数(深蓝特征带) */
  .proof-live{margin:50px auto 0;max-width:920px;display:grid;grid-template-columns:1fr 1fr;gap:1px;
    background:var(--line);border-radius:22px;overflow:hidden;box-shadow:0 30px 70px -34px rgba(20,50,100,.45)}
  .proof-live .pl{background:linear-gradient(160deg,#1A3A5C,#244b73);color:#fff;padding:40px 24px;position:relative;overflow:hidden}
  .proof-live .pl::after{content:"";position:absolute;top:-40%;right:-20%;width:60%;height:140%;
    background:radial-gradient(circle,rgba(125,160,202,.35),transparent 65%);filter:blur(20px)}
  .proof-live .pl .n{position:relative;font-size:clamp(30px,3.6vw,46px);font-weight:700;line-height:1;letter-spacing:-.01em;
    font-variant-numeric:tabular-nums;color:#fff}
  .proof-live .pl .n .u{color:#FFC56F;font-size:.92em}
  .proof-live .pl .l{position:relative;font-size:14px;color:rgba(255,255,255,.7);margin-top:14px;display:flex;align-items:center;justify-content:center;gap:7px}
  .proof-live .pl .l::before{content:"";width:7px;height:7px;border-radius:50%;background:#19B97E;
    box-shadow:0 0 0 0 rgba(25,185,126,.5);animation:pulse 2s infinite}

  /* 双轮 6 方向(无重边框,统一面板 + 中分隔) */
  .proof-wheels{margin:44px auto 0;max-width:920px;display:grid;grid-template-columns:1fr 1fr;
    background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:0 20px 50px -30px rgba(30,60,110,.35)}
  .wheel{padding:30px 30px 32px;text-align:left}
  .wheel:first-child{border-right:1px solid var(--line)}
  .wheel-head{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:24px}
  .wheel-head .dot{width:9px;height:9px;border-radius:50%}
  .wheel-head .dot.s{background:var(--accent)}
  .wheel-head .dot.g{background:#FF9E45}
  .wheel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .wheel-grid .cell{text-align:left}
  .wheel-grid .cell .n{font-size:clamp(24px,2.4vw,34px);font-weight:700;color:var(--brand);line-height:1;font-variant-numeric:tabular-nums;white-space:nowrap}
  .wheel-grid .cell .n .u{color:var(--accent);font-size:.6em}
  .wheel-grid .cell .n .up{color:var(--accent);font-size:.78em}
  .wheel-grid .cell .l{font-size:12px;color:var(--faint);margin-top:9px;line-height:1.4}
  @media(max-width:860px){
    .proof-live{grid-template-columns:1fr;max-width:420px}
    .proof-wheels{grid-template-columns:1fr;max-width:420px}
    .wheel:first-child{border-right:none;border-bottom:1px solid var(--line)}
  }

  /* ========= 通用 section head ========= */
  .sec-head.center{text-align:center;max-width:860px;margin:0 auto}
  .sec-head .kicker{justify-content:center;display:inline-flex}
  .sec-head h2{margin:18px auto 0}
  .sec-head .sub{margin:18px auto 0;max-width:50em}
  .reveal{opacity:0;transform:translateY(22px);transition:.7s cubic-bezier(.2,.7,.3,1)}
  .reveal.in{opacity:1;transform:none}

  /* ========= 3 双轮驱动 ========= */
  .dual-sec{background:var(--paper)}
  .dual-grid{margin:56px auto 0;max-width:var(--maxw);display:grid;grid-template-columns:1fr auto 1fr;align-items:stretch;gap:0}
  .dual-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px 32px;box-shadow:0 24px 60px -36px rgba(30,60,110,.4)}
  .dual-l{border-top:3px solid var(--accent)}
  .dual-r{border-top:3px solid #FF9E45}
  .dual-tag{display:flex;align-items:center;gap:9px;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:14px}
  .dual-tag .dot{width:9px;height:9px;border-radius:50%}.dual-tag .dot.s{background:var(--accent)}.dual-tag .dot.g{background:#FF9E45}
  .dual-card h3{font-size:clamp(22px,2.2vw,28px);font-weight:700;color:var(--ink);letter-spacing:-.02em;line-height:1.25}
  .dual-card p{font-size:15px;line-height:1.7;color:var(--body);margin-top:14px}
  .dual-points{margin-top:22px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:11px}
  .dual-points span{position:relative;padding-left:24px;font-size:14px;color:var(--body);line-height:1.5}
  .dual-points span::before{content:"";position:absolute;left:0;top:6px;width:14px;height:14px;border-radius:50%;
    background:rgba(84,131,179,.14);background-image:none}
  .dual-l .dual-points span::before{box-shadow:inset 0 0 0 2px var(--accent)}
  .dual-r .dual-points span::before{box-shadow:inset 0 0 0 2px #FF9E45;background:rgba(255,158,69,.14)}
  .dual-points span::after{content:"";position:absolute;left:4px;top:9px;width:4px;height:7px;border:1.5px solid var(--accent);border-top:0;border-left:0;transform:rotate(40deg)}
  .dual-r .dual-points span::after{border-color:#FF9E45}
  /* 双轮 · 联动旋转双环 */
  .dual-gears{width:120px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;position:relative}
  .gear{width:84px;height:84px;border-radius:50%;position:relative}
  .gear::before{content:"";position:absolute;inset:0;border-radius:50%;
    border:6px solid transparent;
    -webkit-mask:linear-gradient(#000 0 0);mask:linear-gradient(#000 0 0)}
  .gear .ring{position:absolute;inset:0;border-radius:50%;border:5px dashed var(--accent);opacity:.85}
  .gear .core{position:absolute;inset:22px;border-radius:50%;background:rgba(84,131,179,.12)}
  .gear.g-blue .ring{border-color:var(--accent);animation:spin 9s linear infinite}
  .gear.g-blue .core{background:rgba(47,93,138,.14)}
  .gear.g-orange{margin-top:-18px}
  .gear.g-orange .ring{border-color:#FF9E45;animation:spin 9s linear infinite reverse}
  .gear.g-orange .core{background:rgba(255,158,69,.16)}
  .dual-gears .gx{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:9px;height:9px;border-radius:50%;
    background:#fff;border:2px solid var(--blue2);z-index:2}
  @keyframes spin{to{transform:rotate(360deg)}}
  @media(max-width:860px){.dual-gears{width:100%;flex-direction:row;gap:10px;padding:8px 0}.gear.g-orange{margin-top:0;margin-left:-18px}}
  .dual-link::before{content:"";width:40px;height:2px;background:linear-gradient(90deg,var(--blue),#FF9E45)}
  @media(max-width:860px){.dual-grid{grid-template-columns:1fr;gap:18px}.dual-link{display:none}}

  /* ========= 4 现场演示 ========= */
  .demo-sec{background:linear-gradient(180deg,#EEF4FB,#F4F8FD);padding-bottom:clamp(56px,6vw,88px)}
  .proof-sec{padding-top:clamp(56px,6vw,88px)}
  .demo-stage{margin:50px auto 0;max-width:var(--maxw);display:grid;grid-template-columns:1fr 320px;grid-template-rows:auto 1fr;gap:0 20px;align-items:start}
  .demo-tabs{grid-column:1/3;display:flex;gap:4px;margin-bottom:22px;flex-wrap:wrap;border-bottom:1px solid var(--line)}
  .demo-tab{padding:11px 18px;border:0;border-bottom:2px solid transparent;margin-bottom:-1px;background:none;
    font-size:14.5px;color:var(--faint);cursor:pointer;transition:.2s;font-family:inherit;font-weight:500}
  .demo-tab:hover{color:var(--accent)}
  .demo-tab.is-active{color:var(--brand);border-bottom-color:var(--brand);font-weight:600}
  .demo-panel{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 24px 60px -36px rgba(30,60,110,.45);min-height:360px;display:flex;flex-direction:column}
  .demo-meta{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;border-bottom:1px solid #EEF2F7;font-size:12.5px;color:var(--faint)}
  .demo-meta strong{color:var(--ink);font-weight:600}
  .demo-thread{padding:20px;display:flex;flex-direction:column;gap:14px;height:470px;overflow-y:auto;scroll-behavior:smooth}
  .demo-thread::-webkit-scrollbar{width:5px}
  .demo-thread::-webkit-scrollbar-thumb{background:rgba(40,70,120,.18);border-radius:999px}
  .demo-rail{align-self:stretch}
  .demo-rail .rail-h{font-size:12.5px;color:var(--faint);margin-bottom:12px;letter-spacing:.02em}
  .acard{background:#fff;border:1px solid var(--line);border-radius:13px;padding:14px 16px;margin-bottom:11px;display:flex;gap:12px;align-items:flex-start;
    opacity:0;transform:translateX(14px);transition:.45s cubic-bezier(.2,.7,.3,1)}
  .acard.show{opacity:1;transform:none}
  .acard.alert{border-color:#f0c98a;background:#fffaf2}
  .acard .ai{width:30px;height:30px;border-radius:9px;flex-shrink:0;background:linear-gradient(135deg,var(--accent),var(--blue));color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
  .acard.alert .ai{background:#e8a854}
  .acard b{font-size:13.5px;color:var(--ink);font-weight:600;display:block}
  .acard span{font-size:12px;color:var(--faint);margin-top:3px;display:block;line-height:1.5}
  /* 演示=工作台风格(明显区别于 Hero 的消费者 LiveChat) */
  .demo-thread .msg{display:flex;gap:11px;align-items:flex-start;opacity:0;transform:translateY(8px);transition:.45s cubic-bezier(.2,.7,.3,1)}
  .demo-thread .msg.show{opacity:1;transform:none}
  .demo-thread .msg .av{width:30px;height:30px;border-radius:8px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;aspect-ratio:1}
  .demo-thread .msg .av.u{background:#EEF2F7;color:#6b7787;border-radius:8px}
  .demo-thread .msg .av.ai{background:linear-gradient(135deg,var(--accent),var(--blue));color:#fff;border-radius:8px}
  .demo-thread .msg.me{flex-direction:row}            /* 工作台:都左对齐,像工单流 */
  .demo-thread .wrap{flex:1;min-width:0}
  .demo-thread .who{font-size:11px;color:var(--faint);margin-bottom:4px;display:flex;gap:7px;align-items:center}
  .demo-thread .who b{color:var(--ink);font-weight:600}
  .demo-thread .who .src{background:rgba(84,131,179,.1);color:var(--accent);padding:1px 7px;border-radius:5px;font-size:10px}
  .demo-thread .bub{max-width:100%;padding:10px 14px;border-radius:4px 12px 12px 12px;font-size:13.5px;line-height:1.55;display:inline-block}
  .demo-thread .bub.u{background:#F1F4F8;color:#1d2a3a;border:1px solid #E6EDF5}
  .demo-thread .bub.ai{background:#fff;color:#1d2a3a;border:1px solid #DCE6F1;border-left:3px solid var(--accent)}
  /* 配图(破损照片 / 商品推荐卡) */
  .demo-thread .imgs{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
  .demo-thread .imgs img{width:96px;height:72px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
  .demo-thread .prod{display:flex;gap:12px;margin-top:8px;background:#fff;border:1px solid #DCE6F1;border-radius:10px;padding:10px;max-width:320px;align-items:center}
  .demo-thread .prod img{width:64px;height:64px;object-fit:cover;border-radius:8px;flex-shrink:0}
  .demo-thread .prod .prod-ico{width:64px;height:64px;border-radius:8px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:28px;background:linear-gradient(135deg,rgba(84,131,179,.14),rgba(125,160,202,.18))}
  .demo-thread .prod .pi b{font-size:13px;color:var(--ink);font-weight:600;display:block}
  .demo-thread .prod .pi .price{font-size:14px;color:#9B4700;font-weight:700;margin-top:4px}
  .demo-thread .prod .pi .tag{font-size:11px;color:#0F7452;margin-top:2px}
  .demo-thread .sys{font-size:11.5px;color:var(--accent);background:rgba(84,131,179,.08);border:1px dashed rgba(84,131,179,.3);border-radius:8px;padding:7px 11px;align-self:center;text-align:center;max-width:92%;margin:0 auto;opacity:0;transition:.4s}
  .demo-thread .sys.show{opacity:1}
  .demo-thread .sys.alert{color:#c47d1e;background:rgba(255,158,69,.1);border-color:rgba(255,158,69,.45)}
  @media(max-width:860px){.demo-stage{grid-template-columns:1fr}.demo-rail{margin-top:18px}}

  /* ========= 6 效果履约 / 9 安全(三栏共用) ========= */
  .deliver-sec{background:var(--paper)}
  .deliver-grid{margin:50px auto 0;max-width:var(--maxw);display:grid;grid-template-columns:.82fr 1.18fr;gap:30px;align-items:stretch}
  .promise-list{display:flex;flex-direction:column;gap:16px;height:100%}
  .pm{display:flex;gap:15px;align-items:center;flex:1;min-height:0;background:#fff;border:1px solid var(--line);border-radius:14px;
    padding:20px 22px;box-shadow:0 16px 40px -36px rgba(30,60,110,.4)}
  .pm .pmi{width:42px;height:42px;border-radius:11px;flex-shrink:0;display:flex;align-items:center;justify-content:center;
    font-size:21px;color:var(--accent);background:rgba(84,131,179,.1)}
  .pm .pmt b{display:block;font-size:16px;font-weight:700;color:var(--ink);line-height:1.3}
  .pm .pmt span{display:block;font-size:13.5px;line-height:1.6;color:var(--body);margin-top:5px}
  .pm .pmt .pm-mark{color:var(--accent);font-size:.7em;font-weight:700}
  .pm .pmt .pm-note{display:block;font-size:11px;line-height:1.5;color:var(--faint);margin-top:7px;font-style:normal}
  .deliver-grid .roi-calc{margin:0;max-width:none;height:100%}
  @media(max-width:600px){.deliver-grid{grid-template-columns:1fr;gap:22px}.promise-list{height:auto}.pm{flex:none;align-items:flex-start}.deliver-grid .roi-calc{height:auto}}
  .secure-sec{background:linear-gradient(180deg,#F4F8FD,#EAF1FB)}
  /* 安全合规 · 竖向手风琴 */
  .acc{max-width:760px;margin:46px auto 0;display:flex;flex-direction:column;gap:14px}
  .acc-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
    box-shadow:0 16px 40px -38px rgba(30,60,110,.4);transition:border-color .25s}
  .acc-item.open{border-color:var(--blue)}
  .acc-head{display:flex;align-items:center;gap:15px;padding:20px 22px;cursor:pointer;user-select:none}
  .acc-head .ai{width:44px;height:44px;border-radius:11px;flex-shrink:0;display:flex;align-items:center;justify-content:center;
    font-size:22px;color:var(--accent);background:rgba(84,131,179,.1);transition:.25s}
  .acc-item.open .acc-head .ai{background:linear-gradient(135deg,var(--accent),var(--blue));color:#fff}
  .acc-tt{flex:1;min-width:0}
  .acc-tt .line1{font-size:11.5px;color:var(--faint);font-weight:600;letter-spacing:.02em}
  .acc-tt b{display:block;font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.3;margin-top:2px}
  .acc-tt span{display:block;font-size:13px;color:var(--body);margin-top:3px}
  .acc-toggle{flex-shrink:0;display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--accent);font-weight:600}
  .acc-toggle i{font-size:17px;transition:transform .3s}
  .acc-head:hover .acc-toggle{color:var(--brand)}
  .acc-item.open .acc-toggle i{transform:rotate(180deg)}
  .acc-body{max-height:0;overflow:hidden;transition:max-height .4s ease}
  .acc-item.open .acc-body{max-height:340px}
  .acc-inner{padding:0 22px 22px 81px}
  .acc-inner ul{list-style:none;margin:0 0 14px;padding:0}
  .acc-inner li{position:relative;padding-left:22px;font-size:13.5px;color:var(--body);line-height:1.6;margin-bottom:8px}
  .acc-inner li::before{content:"✓";position:absolute;left:0;top:0;color:var(--green);font-weight:700}
  .acc-inner li b{color:var(--ink);font-weight:600}
  .acc-badges{display:flex;flex-wrap:wrap;gap:8px}
  .acc-badges span{font-size:11px;color:var(--brand);background:#F4F8FD;border:1px solid var(--line);border-radius:999px;padding:4px 11px}
  @media(prefers-reduced-motion:reduce){.acc-body{max-height:none!important;transition:none}.acc-item .acc-toggle{display:none}}
  @media(max-width:600px){.acc-inner{padding-left:22px}}
  .three-grid{margin:50px auto 0;max-width:1040px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .three-grid.two-up{max-width:760px;grid-template-columns:repeat(2,1fr)}
  .tri-card,.gate-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px 28px;box-shadow:0 20px 50px -38px rgba(30,60,110,.4)}
  .tri-no{font-size:14px;font-weight:700;color:var(--accent);font-family:"Inter";letter-spacing:.05em}
  .tri-card h3,.gate-card h3{font-size:18px;font-weight:700;color:var(--ink);margin-top:14px}
  .tri-card p,.gate-card p{font-size:14px;line-height:1.7;color:var(--body);margin-top:11px}
  .tri-bar{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
  .tb-row{display:flex;align-items:center;gap:10px}
  .tb-row span{font-size:12px;color:var(--faint);flex:0 0 64px}
  .tb-row i{flex:1;height:6px;border-radius:4px;background:rgba(84,131,179,.12);overflow:hidden}
  .tb-row b{display:block;height:100%;width:0;border-radius:4px;background:linear-gradient(90deg,var(--blue),var(--accent));transition:width 1.1s cubic-bezier(.2,.7,.3,1)}
  .tb-row em{font-style:normal;font-size:11px;color:var(--brand);font-weight:600;flex:0 0 auto;white-space:nowrap}
  .tri-card.in .tb-row b{width:var(--w)}
  .gate-card{position:relative;overflow:hidden}
  .gate-card::before{content:"";position:absolute;top:0;left:-100%;width:100%;height:2px;
    background:linear-gradient(90deg,transparent,var(--accent),transparent);animation:gatescan 3.2s ease-in-out infinite}
  .gate-card:nth-child(2)::before{animation-delay:1s}
  .gate-card:nth-child(3)::before{animation-delay:2s}
  @keyframes gatescan{0%{left:-100%}50%,100%{left:100%}}
  .gate-ico{width:48px;height:48px;border-radius:12px;background:rgba(84,131,179,.1);color:var(--accent);
    display:flex;align-items:center;justify-content:center;font-size:24px;line-height:1}
  .cert-row{margin:30px auto 0;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
  .cert-row.left{justify-content:flex-start;margin-top:16px;gap:8px}
  .cert-row span{font-size:13px;color:var(--brand);background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-weight:500}
  .cert-row.left span{font-size:12px;padding:5px 12px;background:#F4F8FD}

  /* 安全 · 三道防线 */
  .sec-focal{max-width:1040px;margin:46px auto 16px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px 22px;box-shadow:0 20px 50px -38px rgba(30,60,110,.4)}
  .sf-head{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px}
  .sf-tag{font-size:11px;font-weight:600;color:var(--accent);background:rgba(84,131,179,.12);border-radius:5px;padding:3px 9px}
  .sf-draft{font-size:13px;color:var(--ink);background:#F4F8FD;border-radius:10px;padding:11px 13px;line-height:1.5}
  .sf-draft small{display:block;color:var(--faint);font-size:11px;margin-bottom:4px}
  .sf-arrow{height:16px;width:2px;background:var(--line);margin:4px auto}
  .sf-checks{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .sf-chk{border:1px solid var(--line);border-radius:12px;padding:12px;text-align:center;transition:.3s}
  .sf-chk.checking{border-color:var(--blue);background:rgba(84,131,179,.08)}
  .sf-chk.pass{border-color:rgba(25,185,126,.5);background:rgba(25,185,126,.08)}
  .sf-chk.block{border-color:rgba(216,73,47,.5);background:rgba(216,73,47,.08)}
  .sf-ci{width:30px;height:30px;border-radius:8px;margin:0 auto 7px;display:flex;align-items:center;justify-content:center;font-size:16px;background:rgba(84,131,179,.1);color:var(--accent)}
  .sf-chk.pass .sf-ci{background:rgba(25,185,126,.15);color:#0f9b6c}
  .sf-chk.block .sf-ci{background:rgba(216,73,47,.15);color:#d8492f}
  .sf-cn{font-size:13px;font-weight:600;color:var(--ink)}
  .sf-cd{font-size:11px;color:var(--faint);margin-top:4px;line-height:1.45}
  .sf-cs{font-size:11.5px;font-weight:600;margin-top:7px;min-height:15px}
  .sf-cs.c{color:var(--accent)}.sf-cs.p{color:#0f9b6c}.sf-cs.b{color:#d8492f}
  .sf-verdict{margin-top:11px;padding:11px 14px;border-radius:10px;font-size:13.5px;font-weight:600;display:flex;align-items:center;gap:8px;opacity:0;transition:.4s}
  .sf-verdict.show{opacity:1}
  .sf-verdict.ok{background:rgba(25,185,126,.12);color:#0f8a60}
  .sf-verdict.no{background:rgba(255,158,69,.14);color:#b5641a}
  .sec-two{max-width:1040px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .sec-three{max-width:1040px;margin:46px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .dcard{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px 26px;box-shadow:0 20px 50px -38px rgba(30,60,110,.4)}
  .dn{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px}
  .dno{font-size:11px;font-weight:600;color:var(--accent);background:rgba(84,131,179,.12);border-radius:5px;padding:3px 9px}
  .dcard ul{list-style:none;margin:0;padding:0}
  .dcard li{position:relative;padding-left:22px;font-size:13.5px;color:var(--body);line-height:1.55;margin-bottom:10px}
  .dcard li::before{content:"✓";position:absolute;left:0;top:0;color:var(--green);font-weight:700}
  .dcard li b{color:var(--ink);font-weight:600}
  @media(max-width:860px){.sec-two{grid-template-columns:1fr;max-width:440px}.sec-three{grid-template-columns:1fr;max-width:440px}.sf-checks{grid-template-columns:1fr}}
  @media(max-width:860px){.three-grid{grid-template-columns:1fr;max-width:440px}}

  /* ROI 试算器(浅色皮·借 v2 交互逻辑) */
  .roi-calc{margin:36px auto 0;max-width:1040px;display:grid;grid-template-columns:1.05fr .95fr;
    background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;
    box-shadow:0 30px 70px -40px rgba(20,50,100,.4)}
  .roi-inputs{padding:38px 40px}
  .roi-field{display:block;margin-bottom:26px}
  .roi-label{display:flex;justify-content:space-between;align-items:baseline;font-size:13.5px;color:var(--body);margin-bottom:12px}
  .roi-label b{font-size:16px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
  .roi-field input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:999px;
    background:linear-gradient(90deg,var(--blue),var(--accent)) no-repeat;background-size:var(--fill,40%) 100%;
    background-color:rgba(84,131,179,.14);cursor:pointer}
  .roi-field input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;
    background:#fff;border:2px solid var(--accent);box-shadow:0 3px 10px -2px rgba(30,60,110,.45);cursor:pointer;transition:.15s}
  .roi-field input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.12)}
  .roi-field input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;
    background:#fff;border:2px solid var(--accent);box-shadow:0 3px 10px -2px rgba(30,60,110,.45);cursor:pointer}
  .roi-guarantee{font-size:12.5px;color:var(--faint);margin-top:4px;line-height:1.6}
  .roi-guarantee b{color:var(--accent)}
  .roi-result{position:relative;background:linear-gradient(160deg,#1A3A5C,#244b73);color:#fff;
    padding:40px 36px;display:flex;flex-direction:column;justify-content:center;overflow:hidden}
  .roi-result::after{content:"";position:absolute;top:-40%;right:-25%;width:65%;height:150%;
    background:radial-gradient(circle,rgba(125,160,202,.5),transparent 70%);filter:blur(8px)}
  .roi-result-label{position:relative;font-size:13.5px;color:rgba(255,255,255,.72)}
  .roi-amount{position:relative;display:flex;align-items:baseline;gap:4px;margin-top:14px;flex-wrap:wrap}
  .roi-currency{font-size:22px;font-weight:700;color:#FFC56F}
  .roi-number{font-size:clamp(30px,3.4vw,42px);font-weight:700;line-height:1;letter-spacing:-.01em;
    color:#fff;font-variant-numeric:tabular-nums;filter:blur(5px);opacity:.85;transition:.3s}
  .roi-calc:hover .roi-number{filter:blur(3px)}
  .roi-lock{position:relative;display:block;font-size:11.5px;color:rgba(255,255,255,.72);margin-top:8px}
  .roi-sub{position:relative;font-size:14px;color:#fff;margin-top:18px;display:flex;align-items:center;gap:8px}
  .roi-sub::before{content:"";width:7px;height:7px;border-radius:50%;background:#19B97E;flex-shrink:0}
  .roi-cta{position:relative;margin-top:24px;align-self:flex-start;background:#fff;color:var(--brand);
    padding:12px 22px;border-radius:999px;font-size:14px;font-weight:600;transition:.2s}
  .roi-cta:hover{background:var(--warm);color:var(--ink)}
  .roi-note{position:relative;font-size:11.5px;color:rgba(255,255,255,.72);margin-top:16px;line-height:1.6}
  @media(max-width:860px){.roi-calc{grid-template-columns:1fr;max-width:440px}.roi-inputs{padding:30px 26px}.roi-result{padding:32px 26px}}

  /* ========= 7 原生能力 bento ========= */
  .native-sec{background:var(--paper)}
  .bento{margin:50px auto 0;max-width:1040px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
  .bento-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 24px;box-shadow:0 18px 44px -36px rgba(30,60,110,.4)}
  .bento-card.b-wide{grid-column:span 2}
  .bento-card small{font-size:12px;color:var(--accent);font-weight:600;letter-spacing:.02em}
  .bento-card h3{font-size:18px;font-weight:700;color:var(--ink);margin-top:12px;line-height:1.3}
  .bento-card p{font-size:13.5px;line-height:1.65;color:var(--body);margin-top:9px}
  /* 能力可视化 */
  .bento-viz{height:64px;margin-bottom:18px;display:flex;align-items:flex-end;gap:6px}
  .viz-learn i{flex:1;background:linear-gradient(180deg,var(--blue),var(--accent));border-radius:3px;opacity:.5;animation:vlearn 2.4s ease-in-out infinite}
  .viz-learn i:nth-child(1){height:30%;animation-delay:0s}.viz-learn i:nth-child(2){height:45%;animation-delay:.15s}.viz-learn i:nth-child(3){height:40%;animation-delay:.3s}.viz-learn i:nth-child(4){height:60%;animation-delay:.45s}.viz-learn i:nth-child(5){height:70%;animation-delay:.6s}.viz-learn i:nth-child(6){height:85%;animation-delay:.75s}.viz-learn i:nth-child(7){height:100%;animation-delay:.9s}
  @keyframes vlearn{0%,100%{opacity:.4}50%{opacity:1}}
  .viz-memory{align-items:center;position:relative}
  .viz-memory b{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--accent),var(--blue));flex-shrink:0}
  .viz-memory span{width:10px;height:10px;border-radius:50%;background:rgba(84,131,179,.3);animation:vmem 2s ease-in-out infinite}
  .viz-memory span:nth-child(3){animation-delay:.3s}.viz-memory span:nth-child(4){animation-delay:.6s}
  @keyframes vmem{0%,100%{transform:scale(1);opacity:.4}50%{transform:scale(1.3);opacity:1}}
  .viz-intent{align-items:center}
  .viz-intent em{font-style:normal;font-size:12px;color:var(--accent);background:rgba(84,131,179,.1);padding:5px 10px;border-radius:7px}
  .viz-intent i{flex:1;height:2px;background:linear-gradient(90deg,var(--blue),var(--accent));max-width:24px;position:relative}
  .viz-intent i::after{content:"";position:absolute;right:-1px;top:-2px;border-left:5px solid var(--accent);border-top:3px solid transparent;border-bottom:3px solid transparent}
  .viz-var{align-items:center;flex-wrap:wrap;gap:8px}
  .viz-var u{text-decoration:none;font-size:12px;color:var(--accent);border:1px dashed rgba(84,131,179,.4);padding:4px 10px;border-radius:7px}
  .viz-channel{align-items:center;flex-wrap:wrap;gap:7px}
  .viz-channel em{font-style:normal;font-size:11px;color:var(--accent);background:rgba(84,131,179,.1);padding:4px 9px;border-radius:6px}
  .viz-channel b{margin-left:auto;width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--blue))}
  .viz-handoff{align-items:center;gap:10px}
  .viz-handoff em{font-style:normal;font-size:12px;font-weight:700;width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center}
  .viz-handoff em.ai{background:linear-gradient(135deg,var(--accent),var(--blue));color:#fff}
  .viz-handoff em.hu{background:#EEF2F7;color:#6b7787}
  .viz-handoff i{flex:1;height:2px;background:linear-gradient(90deg,var(--blue),var(--accent));max-width:40px;position:relative}
  .viz-handoff i::after{content:"";position:absolute;right:-1px;top:-2px;border-left:5px solid var(--accent);border-top:3px solid transparent;border-bottom:3px solid transparent}
  @media(max-width:860px){.bento{grid-template-columns:1fr 1fr}.bento-card.b-wide{grid-column:span 2}}

  /* 原生能力 · 6张会动迷你界面卡 */
  .nat-grid{margin:50px auto 0;max-width:var(--maxw);display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .ncard{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 18px 24px;
    box-shadow:0 18px 44px -36px rgba(30,60,110,.4);overflow:hidden}
  .ncard .nmock{height:128px;border-radius:13px;background:linear-gradient(160deg,#F4F8FD,#EAF1FB);
    border:1px solid var(--line);position:relative;overflow:hidden;margin-bottom:18px}
  .ncard small{font-size:12px;color:var(--accent);font-weight:600;letter-spacing:.02em}
  .ncard h3{font-size:17px;font-weight:700;color:var(--ink);margin-top:9px;line-height:1.3}
  .ncard p{font-size:13.5px;line-height:1.6;color:var(--body);margin-top:8px}
  @media(max-width:860px){.nat-grid{grid-template-columns:1fr 1fr}}
  @media(max-width:560px){.nat-grid{grid-template-columns:1fr;max-width:420px}}
  .mk-ico{width:20px;height:20px;border-radius:6px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:10px;color:#fff;font-weight:700}
  /* 1 多重体验:渠道消息逐条滑入 */
  .mk-inbox .mk-row{position:absolute;left:12px;right:12px;display:flex;align-items:center;gap:8px;
    background:#fff;border:1px solid var(--line);border-radius:9px;padding:7px 9px;box-shadow:0 6px 16px -12px rgba(30,60,110,.5);
    opacity:0;transform:translateX(14px);animation:mkslide 5.4s ease-in-out infinite}
  .mk-inbox .mk-row .ml{flex:1;height:6px;border-radius:4px;background:rgba(40,70,120,.14)}
  .mk-inbox .mk-row:nth-child(1){top:14px;animation-delay:0s}
  .mk-inbox .mk-row:nth-child(2){top:52px;animation-delay:.6s}
  .mk-inbox .mk-row:nth-child(3){top:90px;animation-delay:1.2s}
  @keyframes mkslide{0%{opacity:0;transform:translateX(14px)}9%,74%{opacity:1;transform:none}86%,100%{opacity:0;transform:translateX(-8px)}}
  /* 2 长期记忆:档案标签逐个亮起 */
  .mk-profile .pf-av{position:absolute;left:14px;top:16px;width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--blue))}
  .mk-profile .pf-nm{position:absolute;left:58px;top:18px;right:16px;height:8px;border-radius:4px;background:rgba(40,70,120,.18)}
  .mk-profile .pf-nm2{position:absolute;left:58px;top:34px;width:54px;height:6px;border-radius:4px;background:rgba(40,70,120,.1)}
  .mk-profile .pf-tags{position:absolute;left:14px;right:14px;top:66px;display:flex;flex-wrap:wrap;gap:6px}
  .mk-profile .pf-tags span{font-size:10px;color:var(--accent);background:rgba(84,131,179,.12);padding:3px 8px;border-radius:6px;
    opacity:0;animation:mkpop 5s ease-in-out infinite}
  .mk-profile .pf-tags span:nth-child(2){animation-delay:.4s}.mk-profile .pf-tags span:nth-child(3){animation-delay:.8s}.mk-profile .pf-tags span:nth-child(4){animation-delay:1.2s}
  @keyframes mkpop{0%{opacity:0;transform:scale(.8)}12%,82%{opacity:1;transform:none}93%,100%{opacity:0}}
  /* 3 人机协同:脉冲沿箭头流动 */
  .mk-handoff{display:flex;align-items:center;justify-content:center;height:100%}
  .mk-handoff .hf-a,.mk-handoff .hf-h{width:46px;height:46px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
  .mk-handoff .hf-a{background:linear-gradient(135deg,var(--accent),var(--blue));color:#fff}
  .mk-handoff .hf-h{background:#fff;border:1px solid var(--line);color:#6b7787}
  .mk-handoff .hf-wire{width:52px;height:2px;background:rgba(84,131,179,.25);position:relative;margin:0 6px}
  .mk-handoff .hf-wire::after{content:"";position:absolute;top:-3px;width:8px;height:8px;border-radius:50%;
    background:var(--accent);box-shadow:0 0 0 3px rgba(84,131,179,.18);animation:mkpulse 2.6s ease-in-out infinite}
  @keyframes mkpulse{0%{left:0;opacity:0}15%{opacity:1}85%{opacity:1}100%{left:44px;opacity:0}}
  /* 4 自主学习:准确率柱状爬升 */
  .mk-learn{display:flex;align-items:flex-end;justify-content:center;gap:7px;height:100%;padding:18px 16px 24px}
  .mk-learn i{width:13px;border-radius:4px 4px 0 0;background:linear-gradient(180deg,var(--blue),var(--accent));height:14px;animation:mkgrow 3.2s ease-in-out infinite}
  .mk-learn i:nth-child(1){--h:34px;animation-delay:0s}.mk-learn i:nth-child(2){--h:46px;animation-delay:.18s}.mk-learn i:nth-child(3){--h:40px;animation-delay:.36s}
  .mk-learn i:nth-child(4){--h:62px;animation-delay:.54s}.mk-learn i:nth-child(5){--h:74px;animation-delay:.72s}.mk-learn i:nth-child(6){--h:88px;animation-delay:.9s}
  .mk-learn .lv{position:absolute;top:12px;left:14px;font-size:13px;font-weight:700;color:var(--accent)}
  @keyframes mkgrow{0%{height:14px}55%{height:var(--h,60px)}100%{height:14px}}
  /* 5 意图跳转:高亮在 售前→售中→售后 移动 */
  .mk-intent{display:flex;align-items:center;justify-content:center;gap:6px;height:100%}
  .mk-intent em{font-style:normal;font-size:11px;color:var(--faint);background:#fff;border:1px solid var(--line);
    padding:6px 10px;border-radius:8px}
  .mk-intent em:nth-child(1){animation:mkhi 4.8s ease-in-out infinite}
  .mk-intent em:nth-child(3){animation:mkhi 4.8s ease-in-out infinite 1.6s}
  .mk-intent em:nth-child(5){animation:mkhi 4.8s ease-in-out infinite 3.2s}
  .mk-intent i{width:14px;height:2px;background:rgba(84,131,179,.3)}
  @keyframes mkhi{0%,100%{color:var(--faint);border-color:var(--line);background:#fff}14%,26%{color:#fff;border-color:var(--accent);background:var(--accent)}}
  /* 6 动态变量:变量逐个填入气泡 */
  .mk-var .vb{position:absolute;left:14px;right:34px;top:16px;background:#fff;border:1px solid var(--line);
    border-left:3px solid var(--accent);border-radius:5px 9px 9px 9px;padding:9px 11px}
  .mk-var .vb .vl{height:6px;border-radius:4px;background:rgba(40,70,120,.12);margin-bottom:6px}
  .mk-var .vb .vl:last-child{width:62%;margin-bottom:0}
  .mk-var .chips{position:absolute;left:14px;right:14px;bottom:12px;display:flex;flex-wrap:wrap;gap:5px}
  .mk-var .chips u{text-decoration:none;font-size:9.5px;color:var(--accent);border:1px dashed rgba(84,131,179,.4);
    padding:2px 7px;border-radius:5px;opacity:0;animation:mkpop 4.6s ease-in-out infinite}
  .mk-var .chips u:nth-child(2){animation-delay:.4s}.mk-var .chips u:nth-child(3){animation-delay:.8s}.mk-var .chips u:nth-child(4){animation-delay:1.2s}
  @media(prefers-reduced-motion:reduce){.ncard .nmock *{animation:none!important;opacity:1!important;transform:none!important}}

  /* ========= 8 自动交付 ========= */
  .auto-sec{background:linear-gradient(180deg,#EEF4FB,#F4F8FD)}
  .auto-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center}
  .auto-video{position:relative;overflow:hidden;border-radius:14px;background:transparent;
    box-shadow:0 20px 54px -46px rgba(20,50,100,.42)}
  .auto-video video{display:block;width:100%;height:auto;border-radius:14px;background:#fff}
  .auto-ico{display:none}
  .auto-copy h2{font-size:clamp(32px,3vw,46px);line-height:1.12;letter-spacing:-.026em}
  .auto-copy .sub{margin-top:16px;max-width:30em;font-size:clamp(15.5px,1.15vw,17px);line-height:1.65}
  .auto-copy .sub b{color:var(--ink);font-weight:600}
  .auto-pillars{margin-top:22px;display:grid;gap:10px;max-width:32em}
  .auto-pillar{display:grid;grid-template-columns:30px 1fr;gap:4px 12px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.7);padding:14px 16px;
    box-shadow:0 16px 40px -38px rgba(30,60,110,.45)}
  .auto-pillar i{width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;
    background:rgba(84,131,179,.1);color:var(--accent);font-size:16px;grid-row:1/3;margin-top:1px}
  .auto-pillar b{display:block;font-size:14.5px;line-height:1.3;color:var(--ink)}
  .auto-pillar span{display:block;margin-top:5px;font-size:12.8px;line-height:1.5;color:var(--body)}
  .auto-links{margin-top:24px;display:flex;align-items:center;gap:22px;flex-wrap:wrap}
  .auto-links .lk-out{border:1px solid #D2DCE8;color:var(--brand);background:#fff;padding:11px 22px;border-radius:10px;font-size:14.5px;font-weight:600;transition:.2s}
  .auto-links .lk-out:hover{border-color:var(--blue)}
  .auto-links .lk-txt{color:var(--accent);font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:5px;cursor:pointer;transition:.2s}
  .auto-links .lk-txt:hover{gap:8px}
  @media(max-width:600px){.auto-grid{grid-template-columns:1fr;gap:32px}.auto-pillars{grid-template-columns:1fr}}

  /* ========= 10 行业方案 ========= */
  .industry-sec{background:var(--paper)}
  .ind-grid{margin:50px auto 0;max-width:var(--maxw);display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .ind-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 18px 44px -36px rgba(30,60,110,.4);transition:.2s}
  .ind-card:hover{transform:translateY(-3px);box-shadow:0 24px 50px -32px rgba(30,60,110,.5)}
  .ind-img{height:140px;overflow:hidden;background:#eef2f7;position:relative}
  .ind-img img{width:100%;height:100%;object-fit:cover;transition:.4s}
  .ind-badge{position:absolute;top:10px;left:10px;font-size:12px;font-weight:600;color:#fff;background:rgba(26,58,92,.86);backdrop-filter:blur(4px);border-radius:999px;padding:5px 12px}
  .ind-card:hover .ind-img img{transform:scale(1.05)}
  .ind-bd{padding:22px 22px 24px}
  .ind-card h3{font-size:18px;font-weight:700;color:var(--ink)}
  .ind-q{font-size:13px;color:var(--accent);margin-top:12px;font-weight:500}
  .ind-v{font-size:13.5px;line-height:1.6;color:var(--body);margin-top:10px;padding-top:12px;border-top:1px solid var(--line)}
  @media(max-width:860px){.ind-grid{grid-template-columns:1fr;max-width:440px}}

  /* ========= 11 客户案例 ========= */
  .case-sec{background:linear-gradient(180deg,#F4F8FD,#EAF1FB)}
  .cs-stage{margin-top:50px;display:grid;grid-template-columns:.78fr 1.22fr;gap:26px;align-items:stretch}
  .cs-tabs{display:grid;gap:12px}
  .cs-tab{width:100%;display:grid;grid-template-columns:84px 1fr;gap:14px;align-items:center;padding:16px 18px;
    border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--ink);text-align:left;cursor:pointer;
    transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease}
  .cs-tab:hover,.cs-tab.is-active{transform:translateY(-2px);border-color:var(--blue);box-shadow:0 20px 50px -38px rgba(30,60,110,.5)}
  .cs-tab.is-active{box-shadow:0 22px 54px -34px rgba(30,60,110,.55)}
  .cs-tab img{width:84px;height:30px;object-fit:contain;opacity:.85}
  .cs-tab strong{display:block;font-size:15.5px;line-height:1.32;font-weight:600;color:var(--ink)}
  .cs-tab span{display:block;margin-top:5px;color:var(--faint);font-size:12px;line-height:1.48}
  .cs-panel{position:relative;min-height:560px;border-radius:18px;overflow:hidden;border:1px solid var(--line);
    background:#fff;box-shadow:0 20px 50px -38px rgba(30,60,110,.4)}
  .cs-slide{position:absolute;inset:0;display:none;grid-template-rows:1fr auto;pointer-events:none;
    opacity:0;transition:opacity .5s ease}
  .cs-slide.is-active{display:grid;pointer-events:auto;opacity:1}
  .cs-image{overflow:hidden}
  .cs-image img{width:100%;height:100%;min-height:300px;object-fit:cover;display:block}
  .cs-body{padding:28px;background:#fff}
  .cs-body h3{margin:0;font-size:clamp(20px,2vw,26px);line-height:1.22;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
  .cs-body p{margin:12px 0 22px;color:var(--body);font-size:15px;line-height:1.7}
  .cs-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
  .cs-metrics div{padding:16px;border-radius:12px;background:#F6F9FD;border:1px solid var(--line)}
  .cs-metrics b{color:var(--accent);display:block;font-size:clamp(18px,1.7vw,24px);line-height:1.1;font-weight:700;
    font-variant-numeric:tabular-nums;letter-spacing:-.01em}
  .cs-metrics span{display:block;margin-top:8px;color:var(--faint);font-size:12px;line-height:1.4}
  @media(max-width:860px){
    .cs-stage{grid-template-columns:1fr;gap:18px}
    .cs-tabs{grid-template-columns:1fr 1fr}
    .cs-panel{min-height:0}
    .cs-image img{min-height:220px}
  }

  /* ========= 11.5 客户信任(多 logo 客户墙 + 证言卡) ========= */
  .voice-sec{background:var(--paper)}
  .trust-grid{margin:50px auto 0;max-width:var(--maxw);display:grid;grid-template-columns:repeat(6,minmax(0,1fr));grid-auto-rows:118px;gap:16px;align-items:stretch}
  .trust-cell{min-width:0;min-height:0;background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:16px;
    box-shadow:0 18px 46px -38px rgba(30,60,110,.45)}
  .trust-logo{position:relative;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);font-family:inherit;
    height:100%;overflow:hidden;opacity:.64;transition:opacity .3s ease,transform .3s ease,border-color .3s ease,box-shadow .3s ease,background .3s ease;
    animation:trustLogoFloat 7s ease-in-out infinite}
  .trust-logo:nth-child(3n){animation-delay:-1.6s}
  .trust-logo:nth-child(4n){animation-delay:-3.1s}
  .trust-logo[data-v]{cursor:pointer}
  .trust-logo img{max-width:104px;max-height:36px;object-fit:contain;filter:grayscale(.14);transition:filter .3s ease,transform .3s ease}
  .trust-logo.is-active{opacity:1;background:#fff;border-color:rgba(47,93,138,.42);box-shadow:0 24px 58px -38px rgba(30,60,110,.62);transform:translateY(-2px)}
  .trust-logo.is-active img{filter:none;transform:scale(1.05)}
  .trust-logo.is-active::after{content:"";position:absolute;inset:12px;border:1px solid rgba(47,93,138,.12);border-radius:12px}
  .trust-voice-card{grid-column:span 2;grid-row:span 2;height:100%;padding:28px 32px;position:relative;overflow:hidden;
    display:flex;flex-direction:column;justify-content:center}
  .trust-voice-card::before{content:"";position:absolute;width:220px;height:220px;right:-90px;top:-110px;border-radius:50%;background:rgba(84,131,179,.08)}
  .trust-stars{position:relative;color:#FFB200;font-size:14px;letter-spacing:2px;margin-bottom:14px}
  .trust-quote{position:relative;min-width:0;min-height:6.72em;max-width:44em;font-size:17px;line-height:1.68;color:var(--ink);font-weight:600;letter-spacing:-.01em;transition:opacity .26s ease,transform .26s ease}
  .trust-quote::before{content:"\201C";position:absolute;left:-20px;top:-10px;font-family:Georgia,serif;font-size:48px;color:rgba(84,131,179,.16);line-height:1}
  .trust-by{position:relative;margin-top:20px;display:flex;align-items:center;gap:12px;transition:opacity .26s ease,transform .26s ease}
  .trust-avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;
    font-size:15px;font-weight:700;background:linear-gradient(135deg,var(--accent),var(--blue))}
  .trust-name b{display:block;color:var(--ink);font-size:14px}
  .trust-name span{display:block;color:var(--faint);font-size:12px;margin-top:3px}
  .trust-voice-card.is-switching .trust-quote,.trust-voice-card.is-switching .trust-by{opacity:0;transform:translateY(8px)}
  @keyframes trustLogoFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
  @media(max-width:1100px){.trust-grid{grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:112px;gap:14px}}
  @media(max-width:760px){.trust-grid{grid-template-columns:1fr 1fr;grid-auto-rows:112px;gap:12px}.trust-voice-card{grid-column:span 2;grid-row:span 3;order:-1}
    .trust-logo img{max-width:98px;max-height:36px}}
  @media(max-width:560px){.trust-grid{grid-auto-rows:96px}.trust-cell{border-radius:14px}.trust-voice-card{grid-row:span 4;padding:24px 24px}
    .trust-quote{font-size:16px;line-height:1.7;min-height:6.8em}.trust-logo img{max-width:86px;max-height:32px}}
  @media(prefers-reduced-motion:reduce){.trust-logo{animation:none}.trust-logo,.trust-logo img,.trust-quote,.trust-by{transition:none}}

  /* ========= 12 CTA ========= */
  .cta-sec{position:relative;background:linear-gradient(160deg,#1A3A5C,#244b73);overflow:hidden;text-align:center}
  .cta-glow{position:absolute;top:-30%;left:50%;transform:translateX(-50%);width:70%;height:120%;
    background:radial-gradient(circle,rgba(125,160,202,.35),transparent 62%);filter:blur(30px);pointer-events:none}
  .cta-inner{position:relative;z-index:2}
  .cta-sec h2{color:#fff}
  .cta-sec .sub{color:rgba(255,255,255,.78);margin:18px auto 0;max-width:34em}
  .cta-row.center{justify-content:center;margin-top:34px}
  .cta-sec .btn.p{background:#fff;color:var(--brand)}
  .cta-sec .btn.g{border-color:rgba(255,255,255,.3);color:#fff;background:transparent}
  .cta-sec .btn.g:hover{background:rgba(255,255,255,.1)}

  .cta-caps{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:28px}
  .cta-caps span{font-size:13px;color:#fff;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:7px 16px}

  /* ========= 页脚 ========= */
  .site-foot{background:#0A0E15;padding:54px clamp(32px,6vw,96px) 34px}
  .footer-grid{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
  .footer-brand .foot-brand{font-size:20px;font-weight:700;color:#fff;display:block}
  .footer-brand p{font-size:13px;color:#AAB5C3;line-height:1.7;margin-top:12px}
  .footer-col b{display:block;font-size:13px;color:#cdd5e0;font-weight:600;margin-bottom:13px}
  .footer-col a{display:block;font-size:13px;color:#AAB5C3;margin-top:9px;transition:.2s}
  .footer-col a:hover{color:#fff}
  .footer-base{max-width:var(--maxw);margin:34px auto 0;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;color:#98A4B3;font-size:12.5px}
  @media(max-width:860px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-base{flex-direction:column;gap:8px}}

  /* reduce motion */
  @media(prefers-reduced-motion:reduce){
    .hero .grad,.track,.lc-ava .dot{animation:none!important}
    .msg,.chips em{opacity:1!important;transform:none!important}
  }