/* ============================================================
   全站主题（唯一来源）—— 提取自 index.html
   深空科技风：配色 / 材质 / 动效
   ============================================================ */
    /* ============================================================
       设计令牌
       ============================================================ */
    :root{
      --bg:#05070d;
      --text:#e9eefb;
      --muted:#93a3c0;
      --cyan:#22d3ee;
      --blue:#3b82f6;
      --violet:#8b5cf6;
      --line:rgba(120,180,255,.13);
      --grad:linear-gradient(100deg,#22d3ee,#3b82f6 45%,#a855f7);
      --ease:cubic-bezier(.22,.68,.24,1);
      --radius:20px;
    }

    *,*::before,*::after{box-sizing:border-box}

    html{scroll-behavior:smooth;background:var(--bg)}
    body{
      margin:0;
      background:var(--bg);
      color:var(--text);
      font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
      line-height:1.7;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }

    /* 背景光晕（全站） */
    body::before{
      content:"";position:fixed;inset:0;z-index:-3;pointer-events:none;
      background:
        radial-gradient(1100px 600px at 12% -8%, rgba(34,211,238,.14), transparent 62%),
        radial-gradient(900px 520px at 88% -4%, rgba(139,92,246,.14), transparent 62%),
        radial-gradient(900px 620px at 50% 108%, rgba(59,130,246,.12), transparent 65%);
    }

    img{max-width:100%;display:block}
    a{color:inherit}
    h1,h2,h3{line-height:1.25;margin:0}
    p{margin:0}

    .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

    /* 滚动进度 */
    .scroll-progress{
      position:fixed;top:0;left:0;right:0;height:3px;z-index:300;
      background:var(--grad);
      transform:scaleX(0);transform-origin:0 50%;
      will-change:transform;
    }

    /* 光标光晕 */
    .cursor-glow{
      position:fixed;top:0;left:0;width:420px;height:420px;border-radius:50%;
      pointer-events:none;z-index:3;mix-blend-mode:screen;
      background:radial-gradient(circle, rgba(56,189,248,.16), transparent 62%);
      transform:translate3d(-50%,-50%,0);
      will-change:transform;
    }
    @media (pointer:coarse){ .cursor-glow{display:none} }

    /* ============================================================
       通用动效
       ============================================================ */
    .js .reveal{opacity:0;translate:0 28px;transition:opacity .75s var(--ease), translate .75s var(--ease)}
    .js .reveal.in{opacity:1;translate:0 0}

    .js .stagger > *{
      opacity:0;translate:0 26px;
      transition:opacity .7s var(--ease), translate .7s var(--ease);
      transition-delay:calc(var(--i, 0) * 85ms);
    }
    .js .stagger.in > *{opacity:1;translate:0 0}

    @media (prefers-reduced-motion: reduce){
      .js .reveal, .js .stagger > *{opacity:1 !important; translate:0 0 !important; transition:none !important}
      *{animation-duration:.001s !important;animation-iteration-count:1 !important}
      html{scroll-behavior:auto}
    }

    /* ============================================================
       按钮
       ============================================================ */
    .btn{
      position:relative;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
      padding:.78rem 1.5rem;border-radius:999px;font-weight:600;font-size:.95rem;
      text-decoration:none;border:1px solid transparent;overflow:hidden;isolation:isolate;
      transition:transform .3s var(--ease), box-shadow .3s var(--ease), background .3s, border-color .3s, color .3s;
      white-space:nowrap;
    }
    .btn-primary{
      color:#fff;background:linear-gradient(100deg,#0ea5e9,#6366f1 52%,#a855f7);
      box-shadow:0 10px 30px -12px rgba(59,130,246,.9), inset 0 1px 0 rgba(255,255,255,.25);
    }
    .btn-primary::after{
      content:"";position:absolute;inset:0;z-index:-1;
      background:linear-gradient(100deg,transparent 20%,rgba(255,255,255,.45) 50%,transparent 80%);
      transform:translateX(-120%);
    }
    .btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 44px -14px rgba(139,92,246,.95), inset 0 1px 0 rgba(255,255,255,.3)}
    .btn-primary:hover::after{animation:btnShine .85s var(--ease)}
    @keyframes btnShine{to{transform:translateX(120%)}}

    .btn-ghost{
      color:#cfe0ff;background:rgba(255,255,255,.04);
      border-color:rgba(120,180,255,.28);backdrop-filter:blur(8px);
    }
    .btn-ghost:hover{
      transform:translateY(-3px);color:#fff;background:rgba(56,189,248,.12);
      border-color:rgba(56,189,248,.6);box-shadow:0 16px 40px -18px rgba(56,189,248,.95);
    }

    .btn-lg{padding:.95rem 1.9rem;font-size:1rem}

    .text-link{
      display:inline-flex;align-items:center;gap:6px;
      color:#5ed8f5;font-size:.92rem;font-weight:600;text-decoration:none;
      transition:gap .3s var(--ease), color .3s;
    }
    .text-link:hover{gap:12px;color:#8ceafd;text-shadow:0 0 18px rgba(56,189,248,.6)}

    /* ============================================================
       顶部导航
       ============================================================ */
    .site-header{
      position:fixed;top:0;left:0;right:0;z-index:100;
      /* 顶栏底色：始终为暗色，杜绝子页出现白色留白。
         刻意不使用 backdrop-filter —— 顶栏覆盖在每帧重绘的 canvas 之上，
         模糊结果无法缓存，等于每帧一次全宽高斯模糊（移动端掉帧主因）。
         改用接近不透明的实色 + 发光边，视觉几乎等价、开销接近零。 */
      background:rgba(6,9,17,.94);
      border-bottom:1px solid transparent;
      transition:background .3s, border-color .3s;
    }
    .site-header.is-scrolled{
      background:rgba(7,10,19,.97);
      border-bottom-color:var(--line);
      box-shadow:0 8px 30px -12px rgba(0,0,0,.6);
    }

    .nav{display:flex;align-items:center;justify-content:space-between;height:76px;gap:20px}

    .brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
    .brand-mark{
      width:36px;height:36px;border-radius:10px;
      box-shadow:0 0 0 1px rgba(120,180,255,.25), 0 0 22px -4px rgba(56,189,248,.8);
      object-fit:cover;
    }
    .brand-name{
      font-weight:800;font-size:1.06rem;letter-spacing:.02em;
      background:linear-gradient(100deg,#e6f6ff,#8ecbff 55%,#b79bff);
      -webkit-background-clip:text;background-clip:text;color:transparent;
    }

    /* PC 端：导航平铺为顶部横排；≤900px 收进汉堡下拉面板 */
    .nav-links{display:flex;align-items:center;gap:4px}
    .nav-links a{
      position:relative;padding:8px 13px;border-radius:10px;
      color:var(--muted);font-size:.93rem;text-decoration:none;
      transition:color .25s, background .25s;
    }
    .nav-links a:not(.btn)::after{
      content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
      background:var(--grad);transform:scaleX(0);transform-origin:0 50%;
      transition:transform .35s var(--ease);
    }
    .nav-links a:not(.btn):hover{color:#fff;background:rgba(255,255,255,.05)}
    .nav-links a:not(.btn):hover::after{transform:scaleX(1)}
    .nav-links .nav-cta{margin-left:10px;padding:.62rem 1.2rem;font-size:.9rem}
    .nav-links .nav-cta::after{display:none}

    .nav-toggle{
      display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
      background:rgba(255,255,255,.04);cursor:pointer;padding:0;
      flex-direction:column;align-items:center;justify-content:center;gap:5px;
    }
    .nav-toggle span{
      display:block;width:18px;height:2px;border-radius:2px;background:#cfe0ff;
      transition:transform .3s var(--ease), opacity .3s;
    }
    .nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .nav-toggle.is-open span:nth-child(2){opacity:0}
    .nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

    /* ============================================================
       HERO TECH
       ============================================================ */
    .hero-tech{
      position:relative;
      min-height:100vh;
      min-height:100dvh;
      display:flex;align-items:center;
      padding:120px 0 140px;
      overflow:hidden;isolation:isolate;
      background:
        radial-gradient(900px 520px at 50% -6%, rgba(56,189,248,.16), transparent 65%),
        radial-gradient(760px 520px at 88% 88%, rgba(139,92,246,.14), transparent 65%),
        #05070d;
    }
    /* 顶部/底部渐隐，让过渡自然 */
    .hero-tech::before{
      content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
      background:linear-gradient(180deg,rgba(5,7,13,.15) 0%,transparent 28%,rgba(5,7,13,.82) 100%);
    }
    /* 横向扫描光带 */
    .hero-tech::after{
      content:"";position:absolute;left:0;right:0;top:-200px;height:200px;z-index:3;
      pointer-events:none;
      background:linear-gradient(to bottom,transparent,rgba(56,189,248,.12),transparent);
      animation:scanBeam 7.5s linear infinite;
    }
    @keyframes scanBeam{to{transform:translateY(calc(100vh + 400px))}}

    /* 2D 层：全屏网格 + 粒子 */
    .hero-canvas-2d{
      position:absolute;inset:0;width:100%;height:100%;z-index:0;
      display:block;
    }

    /* 3D 层：右侧线框球 */
    .hero-canvas-3d{
      position:absolute;top:0;right:0;
      width:55%;height:100%;z-index:1;
      display:block;pointer-events:none;
      -webkit-mask-image:linear-gradient(to right,transparent 0%,#000 30%);
      mask-image:linear-gradient(to right,transparent 0%,#000 30%);
    }

    /* 扫描线纹理：静止容器 + 伪元素 transform 位移。
       background-position 不可合成（每帧重绘整块全屏重复渐变），
       改用 transform 后由 GPU 合成，图案只光栅化一次。
       位移量取 8px = 渐变周期 4px 的整数倍，循环无跳变。 */
    .hero-scanlines{
      position:absolute;inset:0;z-index:2;pointer-events:none;opacity:.5;
      overflow:hidden;
    }
    .hero-scanlines::before{
      content:"";position:absolute;left:0;right:0;top:-8px;height:calc(100% + 8px);
      background:repeating-linear-gradient(to bottom,rgba(120,200,255,.055) 0 1px,transparent 1px 4px);
      animation:scanDrift 9s linear infinite;
    }
    @keyframes scanDrift{to{transform:translateY(8px)}}

    /* 暗角 */
    .hero-vignette{
      position:absolute;inset:0;z-index:3;pointer-events:none;
      background:radial-gradient(circle at 58% 46%,transparent 38%,rgba(3,5,10,.72) 100%);
    }

    /* HUD 四角 */

    /* 内容区 */
    .hero-tech-inner{
      position:relative;z-index:5;
      display:grid;
      grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
      align-items:center;
      gap:48px;
      width:100%;
    }

    .hero-kicker{
      display:inline-flex;align-items:center;gap:10px;
      padding:7px 16px;border-radius:999px;
      font-size:.76rem;letter-spacing:.16em;font-weight:600;
      color:#9fe6ff;font-variant-numeric:tabular-nums;
      background:rgba(56,189,248,.07);
      border:1px solid rgba(56,189,248,.3);
      box-shadow:0 0 34px -12px rgba(56,189,248,.95), inset 0 0 24px -14px rgba(56,189,248,.9);
      margin-bottom:26px;
      animation:kickerGlow 3.4s ease-in-out infinite;
    }
    @keyframes kickerGlow{
      0%,100%{box-shadow:0 0 34px -12px rgba(56,189,248,.95), inset 0 0 24px -14px rgba(56,189,248,.9)}
      50%{box-shadow:0 0 48px -8px rgba(56,189,248,.7), inset 0 0 32px -10px rgba(56,189,248,.6)}
    }
    .hud-dot{
      width:7px;height:7px;border-radius:50%;background:#22d3ee;flex:none;
      box-shadow:0 0 10px #22d3ee;
      animation:pulseDot 2s infinite;
    }
    @keyframes pulseDot{70%{box-shadow:0 0 0 10px rgba(34,211,238,0)}100%{box-shadow:0 0 0 0 rgba(34,211,238,0)}}
    .hud-sep{color:rgba(120,180,255,.35)}

    .hero-title{
      font-size:clamp(2.05rem,4.9vw,3.9rem);
      font-weight:800;letter-spacing:-.03em;line-height:1.16;
      filter:drop-shadow(0 2px 24px rgba(0,0,0,.55));
    }
    .hero-title-line{display:block}
    .hero-tech .grad-text{
      background:linear-gradient(100deg,#22d3ee,#60a5fa 30%,#a855f7 55%,#22d3ee 80%);
      background-size:250% 100%;
      -webkit-background-clip:text;background-clip:text;color:transparent;
      animation:gradShift 7s linear infinite;
    }
    @keyframes gradShift{to{background-position:250% 0}}

    /* 打字机 */
    .hero-type{
      margin-top:22px;display:flex;align-items:center;gap:9px;
      font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
      font-size:.92rem;color:#7fe3ff;min-height:1.7em;
      text-shadow:0 0 20px rgba(56,189,248,.4);
    }
    .type-prompt{color:#a855f7;font-weight:700}
    .type-caret{
      display:inline-block;width:8px;height:1.05em;background:#22d3ee;
      box-shadow:0 0 10px #22d3ee;
      animation:caretBlink 1s steps(1) infinite;
      margin-left:2px;vertical-align:text-bottom;
    }
    @keyframes caretBlink{50%{opacity:0}}

    .hero-tech .hero-sub{
      margin-top:18px;max-width:560px;
      color:#93a3c0;font-size:1rem;line-height:1.85;
      text-shadow:0 1px 16px rgba(0,0,0,.55);
    }
    .hero-tech .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

    /* 底部终端控制台 */
    .hero-console{
      position:absolute;left:50%;bottom:26px;transform:translateX(-50%);
      z-index:5;width:min(720px,calc(100% - 120px));
      padding:12px 18px;border-radius:12px;
      background:rgba(6,12,22,.7);
      border:1px solid rgba(120,180,255,.16);
      backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
      font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
      font-size:.74rem;color:#9fc4e8;display:grid;gap:5px;
    }
    .console-line{opacity:0;animation:consoleIn .5s ease forwards}
    .console-line:nth-child(1){animation-delay:.6s}
    .console-line:nth-child(2){animation-delay:1.2s}
    .console-line:nth-child(3){animation-delay:1.8s}
    @keyframes consoleIn{to{opacity:1}}
    .c-ok{color:#4ade80;margin-right:6px}
    .c-run{color:#22d3ee;margin-right:6px}
    .console-line em{color:#a855f7;font-style:normal}

    /* 终端状态行：文字轮播切换 + 闪烁方块光标 */
    .console-cursor{
      display:inline-block;width:7px;height:1em;margin-left:6px;vertical-align:text-bottom;
      background:#22d3ee;box-shadow:0 0 8px #22d3ee;
      animation:caretBlink 1s steps(1) infinite;
    }
    #consoleStatus{display:inline-block;transition:opacity .3s var(--ease), transform .3s var(--ease)}
    #consoleStatus.swap{opacity:0;transform:translateY(-4px)}

    /* ============================================================
       区块通用
       ============================================================ */
    .section{position:relative;padding:96px 0;scroll-margin-top:92px}
    .section-alt{background:linear-gradient(180deg,rgba(255,255,255,.028),transparent 70%)}

    .section-head{max-width:760px;margin:0 auto 52px;text-align:center}
    .eyebrow{
      display:inline-block;font-size:.76rem;font-weight:700;letter-spacing:.26em;
      color:#5ed8f5;text-transform:uppercase;margin-bottom:14px;
    }
    .section-head h2{
      font-size:clamp(1.65rem,3.1vw,2.35rem);font-weight:800;letter-spacing:-.015em;
    }
    .section-head p{margin-top:14px;color:var(--muted);font-size:1rem}

    .cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}

    /* 光晕卡片 */
    .glow-card{
      position:relative;overflow:hidden;border-radius:var(--radius);
      background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.012));
      border:1px solid rgba(120,180,255,.13);
      transition:transform .4s var(--ease), border-color .4s, box-shadow .4s;
    }
    .glow-card::after{
      content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;
      background:radial-gradient(340px circle at var(--mx,50%) var(--my,50%), rgba(56,189,248,.2), transparent 62%);
      opacity:0;transition:opacity .45s;
    }
    .glow-card:hover{
      transform:translateY(-8px);
      border-color:rgba(56,189,248,.5);
      box-shadow:0 30px 70px -34px rgba(56,189,248,.9);
    }
    .glow-card:hover::after{opacity:1}

    /* 服务卡片 */
    .service-card{padding:30px 26px;display:flex;flex-direction:column}
    .service-icon{
      width:52px;height:52px;border-radius:15px;display:grid;place-items:center;
      font-size:1.4rem;margin-bottom:20px;
      background:linear-gradient(150deg,rgba(34,211,238,.22),rgba(139,92,246,.22));
      border:1px solid rgba(120,180,255,.28);
      box-shadow:0 12px 30px -16px rgba(56,189,248,.95), inset 0 1px 0 rgba(255,255,255,.15);
      transition:transform .4s var(--ease), box-shadow .4s;
    }
    .glow-card:hover .service-icon{
      transform:translateY(-4px) rotate(-6deg);
      box-shadow:0 18px 36px -14px rgba(139,92,246,.95), inset 0 1px 0 rgba(255,255,255,.25);
    }
    .service-card h3{font-size:1.14rem;font-weight:700;margin-bottom:10px}
    .service-card > p{color:var(--muted);font-size:.94rem}

    .feature-list{list-style:none;padding:0;margin:18px 0 22px;display:grid;gap:9px}
    .feature-list li{
      position:relative;padding-left:22px;color:var(--muted);font-size:.9rem;
    }
    .feature-list li::before{
      content:"";position:absolute;left:0;top:.55em;width:8px;height:8px;border-radius:50%;
      background:linear-gradient(135deg,#22d3ee,#a855f7);
      box-shadow:0 0 10px rgba(56,189,248,.85);
    }
    .service-card .text-link{margin-top:auto}

    /* 优势 / 标准 */
    .adv-item{
      padding:26px 24px;border-radius:var(--radius);
      background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
      border:1px solid rgba(120,180,255,.12);
      transition:transform .4s var(--ease), border-color .4s, box-shadow .4s, background .4s;
    }
    .adv-item:hover{
      transform:translateY(-6px);
      border-color:rgba(120,180,255,.4);
      background:linear-gradient(160deg,rgba(56,189,248,.1),rgba(255,255,255,.015));
      box-shadow:0 26px 60px -34px rgba(56,189,248,.9);
    }
    .adv-icon{
      width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
      font-size:1.25rem;margin-bottom:16px;
      background:rgba(56,189,248,.1);border:1px solid rgba(120,180,255,.24);
      transition:transform .4s var(--ease);
    }
    .adv-item:hover .adv-icon{transform:scale(1.08)}
    .adv-item h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
    .adv-item p{color:var(--muted);font-size:.92rem}

    /* 流程 */
    .steps{
      list-style:none;padding:0;margin:0;
      display:grid;grid-template-columns:repeat(5,1fr);gap:16px;
    }
    .step{
      position:relative;padding:26px 20px 22px;border-radius:18px;
      background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
      border:1px solid rgba(120,180,255,.12);
      transition:transform .4s var(--ease), border-color .4s, box-shadow .4s;
      overflow:hidden;
    }
    .step::before{
      content:"";position:absolute;top:0;left:20px;right:20px;height:2px;border-radius:2px;
      background:var(--grad);transform:scaleX(0);transform-origin:0 50%;
      transition:transform .7s var(--ease);
      transition-delay:calc(var(--i, 0) * 85ms + 260ms);
    }
    .stagger.in .step::before{transform:scaleX(1)}
    .step:hover{transform:translateY(-6px);border-color:rgba(56,189,248,.45);box-shadow:0 24px 56px -34px rgba(56,189,248,.95)}
    .step-no{
      display:block;font-size:1.9rem;font-weight:800;font-variant-numeric:tabular-nums;
      background:linear-gradient(180deg,rgba(120,200,255,.95),rgba(139,92,246,.65));
      -webkit-background-clip:text;background-clip:text;color:transparent;
      margin-bottom:10px;letter-spacing:-.02em;
    }
    .step h3{font-size:1rem;font-weight:700;margin-bottom:6px}
    .step p{color:var(--muted);font-size:.87rem}

    /* 数据带 */
    .stats-band{
      padding:72px 0;
      background:linear-gradient(180deg,rgba(56,189,248,.07),rgba(139,92,246,.07));
      border-top:1px solid rgba(120,180,255,.12);
      border-bottom:1px solid rgba(120,180,255,.12);
    }
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
    .stat-num{
      display:block;font-size:clamp(1.9rem,4vw,2.9rem);font-weight:800;
      font-variant-numeric:tabular-nums;letter-spacing:-.02em;
      background:linear-gradient(180deg,#eaf8ff,#38bdf8 58%,#818cf8);
      -webkit-background-clip:text;background-clip:text;color:transparent;
      filter:drop-shadow(0 0 22px rgba(56,189,248,.45));
    }
    .stat-label{display:block;margin-top:6px;color:var(--muted);font-size:.9rem}

    /* 计数落位脉冲：缩放 + 辉光。
       注意 .stat-num 是 background-clip:text 的渐变文字，text-shadow 不可见，
       因此辉光用 filter:drop-shadow 实现。 */
    .stat-num.stat-pop{animation:statPop .65s cubic-bezier(.22,.68,.24,1)}
    @keyframes statPop{
      0%{transform:scale(1);filter:drop-shadow(0 0 22px rgba(56,189,248,.45))}
      45%{transform:scale(1.13);filter:drop-shadow(0 0 36px rgba(56,189,248,.95)) brightness(1.22)}
      100%{transform:scale(1);filter:drop-shadow(0 0 22px rgba(56,189,248,.45))}
    }

    /* 行业墙 / 生态 */
    .eco-list{
      list-style:none;display:flex;flex-wrap:wrap;gap:12px;justify-content:center;
      padding:0;margin:44px 0 0;
    }
    .eco-list li{
      padding:10px 20px;border-radius:999px;font-size:.9rem;color:var(--muted);
      background:rgba(255,255,255,.035);border:1px solid rgba(120,180,255,.16);
      transition:transform .3s var(--ease), color .3s, border-color .3s, box-shadow .3s, background .3s;
      cursor:default;
    }
    .eco-list li:hover{
      transform:translateY(-3px);color:#fff;
      border-color:rgba(56,189,248,.6);background:rgba(56,189,248,.1);
      box-shadow:0 0 30px -8px rgba(56,189,248,.95);
    }
    .industry-wall{margin-top:48px}
    .industry-wall li{border-style:dashed}

    /* 痛点 */
    .pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
    .pain-item{
      padding:26px 24px;border-radius:var(--radius);
      background:rgba(255,255,255,.028);
      border:1px solid rgba(120,180,255,.1);
      border-left:2px solid rgba(139,92,246,.55);
      transition:transform .4s var(--ease), background .4s, border-color .4s;
    }
    .pain-item:hover{
      transform:translateX(6px);
      background:rgba(139,92,246,.07);
      border-left-color:#a855f7;
    }
    .pain-item h3{
      display:flex;align-items:center;gap:10px;
      font-size:1.02rem;font-weight:700;margin-bottom:10px;
    }
    .pain-ico{
      display:grid;place-items:center;width:34px;height:34px;border-radius:10px;flex:none;
      background:rgba(139,92,246,.14);border:1px solid rgba(139,92,246,.3);font-size:1rem;
    }
    .pain-item p{color:var(--muted);font-size:.92rem}

    .center-btn{display:flex;justify-content:center;margin-top:44px}

    /* 案例 */
    .case-card{padding:26px 24px;display:flex;flex-direction:column;gap:12px}
    .case-tags{display:flex;gap:8px;flex-wrap:wrap}
    .case-tag{
      font-size:.75rem;font-weight:700;letter-spacing:.04em;
      padding:4px 11px;border-radius:999px;color:#a7e9f9;
      background:rgba(56,189,248,.12);border:1px solid rgba(56,189,248,.32);
    }
    .case-industry{
      font-size:.75rem;padding:4px 11px;border-radius:999px;
      color:var(--muted);background:rgba(255,255,255,.04);border:1px solid rgba(120,180,255,.16);
    }
    .case-card h3{font-size:1.05rem;font-weight:700}
    .case-card > p{color:var(--muted);font-size:.92rem}
    .case-result{
      margin-top:auto;padding-top:14px;border-top:1px dashed rgba(120,180,255,.18);
      font-size:.9rem;color:#bfe6ff;
    }
    .case-result strong{
      color:#fff;font-weight:800;
      background:linear-gradient(100deg,#22d3ee,#a855f7);
      -webkit-background-clip:text;background-clip:text;color:transparent;
    }

    /* 跑马灯 */
    .marquee{
      margin-top:44px;overflow:hidden;
      -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
      mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
    }
    .marquee-track{
      display:flex;gap:56px;width:max-content;
      animation:marquee 30s linear infinite;
    }
    .marquee:hover .marquee-track{animation-play-state:paused}
    .marquee-track span{
      font-size:.95rem;font-weight:600;letter-spacing:.06em;
      color:rgba(160,190,230,.65);white-space:nowrap;
      transition:color .3s;
    }
    .marquee-track span:hover{color:#7fe3ff}
    @keyframes marquee{to{transform:translateX(-50%)}}

    /* CTA */
    .cta-band{position:relative;padding:104px 0;overflow:hidden}
    .cta-inner{
      position:relative;max-width:920px;margin:0 auto;padding:64px 36px;
      border-radius:30px;text-align:center;overflow:hidden;isolation:isolate;
      background:linear-gradient(160deg,rgba(56,189,248,.13),rgba(139,92,246,.13));
      border:1px solid rgba(120,180,255,.24);
      box-shadow:0 46px 110px -56px rgba(56,120,255,.95);
    }
    .cta-inner::before{
      content:"";position:absolute;inset:-40%;z-index:-1;
      background:conic-gradient(from 0deg,transparent 0deg,rgba(56,189,248,.3) 60deg,transparent 130deg,rgba(168,85,247,.3) 220deg,transparent 300deg);
      animation:spinGlow 16s linear infinite;
      opacity:.55;
    }
    @keyframes spinGlow{to{transform:rotate(360deg)}}
    .cta-inner h2{font-size:clamp(1.6rem,3.2vw,2.3rem);font-weight:800}
    .cta-inner p{margin-top:14px;color:#c2d2ea;font-size:1rem}
    .cta-inner .hero-actions{justify-content:center;display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

    /* 页脚 */
    .site-footer{
      position:relative;border-top:1px solid rgba(120,180,255,.12);
      background:rgba(255,255,255,.018);
      padding-top:56px;
    }
    .footer-inner{
      display:flex;flex-wrap:wrap;gap:32px;justify-content:space-between;align-items:flex-start;
      padding-bottom:44px;
    }
    .footer-brand{max-width:420px}
    .footer-brand .brand-mark{display:inline-block;vertical-align:middle}
    .footer-brand .brand-name{display:inline-block;vertical-align:middle;margin-left:10px}
    .footer-brand p{margin-top:14px;color:var(--muted);font-size:.9rem}
    .footer-contact{margin-top:10px !important;color:#9fb6d6 !important;font-size:.88rem !important}

    .footer-links{display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center}
    .footer-links a{
      color:var(--muted);font-size:.9rem;text-decoration:none;
      transition:color .25s, text-shadow .25s;
    }
    .footer-links a:hover{color:#7fe3ff;text-shadow:0 0 16px rgba(56,189,248,.7)}

    .footer-bottom{
      border-top:1px solid rgba(120,180,255,.1);
      padding:20px 0;color:rgba(150,170,200,.75);font-size:.84rem;
    }

    /* 悬浮联系：固定左侧，与右侧「返回顶部」彻底错开，避免重叠 */
    .contact-dock{
      position:fixed;left:20px;right:auto;bottom:20px;z-index:90;
      display:flex;flex-direction:column;gap:10px;
    }
    .dock-btn{
      width:48px;height:48px;border-radius:15px;display:grid;place-items:center;
      font-size:1.05rem;text-decoration:none;cursor:pointer;
      background:rgba(10,16,28,.82);border:1px solid rgba(120,180,255,.26);
      color:#cfe0ff;backdrop-filter:blur(12px);
      box-shadow:0 16px 40px -20px rgba(56,189,248,.9);
      transition:transform .3s var(--ease), border-color .3s, box-shadow .3s, background .3s;
    }
    .dock-btn:hover{
      transform:translateY(-3px) scale(1.05);
      border-color:rgba(56,189,248,.7);
      background:rgba(56,189,248,.16);
      box-shadow:0 20px 46px -18px rgba(56,189,248,1);
    }

    /* 返回顶部：右下角，与左侧悬浮联系错开 */
    .to-top{
      position:fixed;right:20px;bottom:20px;z-index:90;
      width:48px;height:48px;border-radius:15px;display:grid;place-items:center;
      font-size:1.1rem;cursor:pointer;color:#cfe0ff;
      background:rgba(10,16,28,.82);border:1px solid rgba(120,180,255,.26);
      backdrop-filter:blur(12px);
      box-shadow:0 16px 40px -20px rgba(139,92,246,.95);
      transition:transform .3s var(--ease), border-color .3s, background .3s;
    }
    .to-top[hidden]{display:none}
    .to-top:hover{transform:translateY(-3px);border-color:rgba(168,85,247,.8);background:rgba(139,92,246,.18)}

    /* Toast */
    .toast{
      position:fixed;left:50%;bottom:36px;z-index:400;
      transform:translateX(-50%);
      padding:12px 22px;border-radius:999px;font-size:.9rem;color:#e8f6ff;
      background:rgba(12,20,34,.94);border:1px solid rgba(56,189,248,.45);
      box-shadow:0 20px 50px -20px rgba(56,189,248,1);
      animation:toastIn .3s var(--ease);
    }
    .toast[hidden]{display:none}
    @keyframes toastIn{from{opacity:0;transform:translate(-50%,12px)}to{opacity:1;transform:translate(-50%,0)}}

    /* ============================================================
       响应式
       ============================================================ */
    @media (max-width:1080px){
      .hero-tech-inner{grid-template-columns:1fr;gap:44px}
      .hero-tech-copy{max-width:620px}
      .cards-3{grid-template-columns:repeat(2,1fr)}
      .steps{grid-template-columns:repeat(3,1fr)}
    }

    @media (max-width:1024px){
      .hero-canvas-3d{display:none}
      .hero-tech{padding:120px 0 130px}
      .hero-tech-inner{text-align:center}
      .hero-tech .hero-sub{margin-left:auto;margin-right:auto}
      .hero-tech .hero-actions{justify-content:center}
    }

    @media (max-width:900px){
      .nav-toggle{display:flex}
      .nav-links{
        display:flex;
        position:fixed;top:84px;left:16px;right:16px;
        flex-direction:column;align-items:stretch;gap:4px;
        padding:14px;border-radius:20px;
        background:rgba(8,12,22,.94);
        border:1px solid var(--line);
        backdrop-filter:blur(20px);
        -webkit-backdrop-filter:blur(20px);
        box-shadow:0 30px 70px -30px rgba(0,0,0,.95);
        opacity:0;visibility:hidden;transform:translateY(-12px);
        transition:opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
      }
      .nav-links.open{opacity:1;visibility:visible;transform:translateY(0)}
      .nav-links a{padding:12px 14px;font-size:.98rem}
      .nav-links .nav-cta{margin:6px 0 0;justify-content:center}
      .pain-grid{grid-template-columns:1fr}
    }

    @media (max-width:720px){
      .hero-tech{padding:110px 0 110px;min-height:auto}
      .hero-console{display:none}
      .section{padding:74px 0}
      .cards-3{grid-template-columns:1fr}
      .steps{grid-template-columns:repeat(2,1fr)}
      .stats{grid-template-columns:repeat(2,1fr);gap:34px 20px}
      .cta-inner{padding:48px 22px}
      .footer-inner{flex-direction:column}
      .contact-dock{left:14px;right:auto;bottom:14px}
      .to-top{right:14px;bottom:14px}
    }

    @media (max-width:460px){
      .steps{grid-template-columns:1fr}
      .hero-tech .hero-actions .btn{width:100%}
    }

    /* ============================================================
       子页统一层 ①：变量重映射 + 子页组件适配
       让 services / cases / about / contact / order / blog / 404 / thanks
       与 index.html 完全同一套配色、材质、动效
       ============================================================ */
    :root{
      --c-primary:#22d3ee;
      --c-primary-dark:#0ea5e9;
      --c-secondary:#3b82f6;
      --c-accent:#a855f7;
      --c-ink:#f2f7ff;
      --c-text:#e9eefb;
      --c-muted:#93a3c0;
      --c-line:rgba(120,180,255,.13);
      --c-bg:#05070d;
      --c-bg-alt:rgba(255,255,255,.028);
      --c-bg-soft:rgba(34,211,238,.08);
      --grad:linear-gradient(100deg,#22d3ee,#3b82f6 45%,#a855f7);
      --grad-soft:linear-gradient(120deg,rgba(34,211,238,.1),rgba(139,92,246,.1));
      --shadow-sm:0 1px 3px rgba(0,0,0,.45);
      --shadow-md:0 14px 38px rgba(0,0,0,.5);
      --shadow-lg:0 26px 60px -30px rgba(56,189,248,.85);
      --radius:20px;
    }

    /* 子页横幅：与首页 Hero 同一套光晕语言 */
    .page-head{
      position:relative;overflow:hidden;padding:76px 0 58px;
      border-bottom:1px solid var(--line);
      background:linear-gradient(180deg,rgba(34,211,238,.07),transparent 72%);
    }
    .page-head::before{
      content:"";position:absolute;inset:-30% -10% auto;height:150%;pointer-events:none;
      background:
        radial-gradient(42% 58% at 82% 2%, rgba(34,211,238,.18), transparent 62%),
        radial-gradient(38% 52% at 4% 96%, rgba(139,92,246,.18), transparent 62%);
      animation:gradShift 16s ease-in-out infinite alternate;
    }
    .page-head::after{
      content:"";position:absolute;inset:0;pointer-events:none;
      background-image:
        linear-gradient(rgba(120,180,255,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(120,180,255,.05) 1px, transparent 1px);
      background-size:64px 64px;
      -webkit-mask-image:radial-gradient(72% 78% at 50% 0%, #000 0%, transparent 80%);
      mask-image:radial-gradient(72% 78% at 50% 0%, #000 0%, transparent 80%);
    }
    .page-head > .container{position:relative;z-index:1}
    .crumbs{font-size:13px;color:var(--muted);margin-bottom:14px}
    .crumbs a{color:var(--cyan);font-weight:600}
    .crumbs span{color:var(--text)}
    .page-sub-en{
      font-size:.78rem;letter-spacing:.2em;text-transform:uppercase;
      color:var(--cyan);margin:-8px 0 12px;font-weight:700;
    }
    .page-head h1{
      font-size:clamp(1.8rem,3.6vw,2.7rem);margin-bottom:12px;
      background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
    }
    .page-head p{color:var(--muted);max-width:780px;margin:0}

    /* 服务详情 */
    .svc-text h2{font-size:clamp(1.4rem,2.4vw,1.9rem);color:var(--text)}
    .svc-text h3{font-size:1.05rem;margin-top:26px;color:#f2f7ff}
    .svc-text p, .svc-text li, .svc-text ul{color:var(--muted)}
    .svc-meta{
      padding:26px 24px;border-radius:var(--radius);
      background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.012));
      border:1px solid var(--line);
    }
    .svc-meta h4{margin:0 0 12px;font-size:1rem;color:#f2f7ff}
    .svc-meta li, .svc-meta p{color:var(--muted);font-size:.92rem}
    .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
    .tag{
      display:inline-block;padding:5px 12px;border-radius:999px;font-size:.78rem;
      background:rgba(34,211,238,.1);border:1px solid rgba(120,180,255,.18);color:#a5e9fb;
    }
    .meta-note{color:var(--muted);font-size:.85rem;margin-top:14px}

    /* 表单 / FAQ / 订单区 */
    .field{margin-bottom:18px}
    .field label{display:block;font-size:.86rem;font-weight:600;margin-bottom:8px;color:#c7d6f0}
    .field input, .field select, .field textarea{
      width:100%;padding:13px 15px;border-radius:12px;font-family:inherit;font-size:.95rem;
      background:rgba(255,255,255,.045);color:var(--text);border:1px solid rgba(120,180,255,.16);
      transition:border-color .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease);
    }
    .field input::placeholder, .field textarea::placeholder{color:#6b7f9e}
    .field input:focus, .field select:focus, .field textarea:focus{
      outline:none;border-color:rgba(56,189,248,.6);
      box-shadow:0 0 0 3px rgba(56,189,248,.14);background:rgba(255,255,255,.07);
    }
    .field select option{background:#0b1120;color:var(--text)}
    .contact-form, .order-form, .order-block, .help-card, .sum-card, .pay-card{
      padding:26px 24px;border-radius:var(--radius);margin-bottom:22px;
      background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
      border:1px solid var(--line);
    }
    .block-title{display:flex;align-items:center;gap:10px;font-size:1.05rem;margin-bottom:16px;color:#f2f7ff}
    .step-dot{
      width:26px;height:26px;border-radius:50%;display:grid;place-items:center;flex:none;
      font-size:.8rem;font-weight:800;color:#04121f;background:var(--grad);
    }
    .pkg-grid, .addon-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .pkg-opt, .addon-opt{
      display:block;padding:14px 16px;border-radius:12px;cursor:pointer;
      background:rgba(255,255,255,.04);border:1px solid rgba(120,180,255,.14);
      transition:border-color .25s var(--ease), transform .25s var(--ease);
    }
    .pkg-opt:hover, .addon-opt:hover{border-color:rgba(56,189,248,.45);transform:translateY(-2px)}
    .pkg-opt input, .addon-opt input{accent-color:#22d3ee}
    .mini-note, .sum-note, .pay-note, .contact-tip{color:var(--muted);font-size:.85rem}
    .form-hint{font-size:.86rem;color:var(--muted);margin-top:10px}
    .form-hint.err{color:#fca5a5}
    .faq-list{display:grid;gap:12px}
    .faq-item{
      padding:18px 22px;border-radius:var(--radius);border:1px solid var(--line);
      background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
      transition:border-color .3s var(--ease), transform .3s var(--ease);
    }
    .faq-item:hover{border-color:rgba(56,189,248,.42);transform:translateY(-3px)}
    .faq-item summary{
      cursor:pointer;list-style:none;font-weight:700;color:#f2f7ff;
      position:relative;padding-right:28px;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";position:absolute;right:0;top:-2px;font-size:22px;color:var(--cyan);
      transition:transform .25s var(--ease);
    }
    .faq-item[open] summary::after{transform:rotate(45deg)}
    .faq-item p{color:var(--muted);margin:12px 0 0;font-size:.94rem}

    /* 案例 / 学堂补充 */
    .case-more{margin-top:14px}
    .case-more summary{cursor:pointer;font-weight:600;color:var(--cyan)}
    .case-more p{color:var(--muted);font-size:.92rem;margin:10px 0 0}
    .cases-note{text-align:center;color:var(--muted);font-size:.85rem;margin-top:26px}
    .cases-note-top{
      margin:18px auto 0;max-width:780px;padding:14px 18px;border-radius:14px;
      background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
      border:1px solid var(--line);border-left:3px solid var(--cyan);
      color:var(--muted);font-size:.9rem;line-height:1.75;
    }
    .case-industry{background:rgba(34,211,238,.1);border:1px solid rgba(120,180,255,.18);color:#a5e9fb}
    .about-copy h2, .about-copy h3{color:#f2f7ff}
    .about-copy p, .about-copy li{color:var(--muted)}

    /* ============================================================
       子页统一层 ②：浅色规则强制覆盖（杜绝任何白底/浅色块）
       与 style.css 同权重，但 theme.css 后置加载，故生效
       ============================================================ */

    /* 卡片与区块：统一玻璃材质 */
    .service-card, .case-card, .adv-item, .pain-item, .step, .faq-item,
    .svc-meta, .order-block, .help-card, .sum-card, .pay-card,
    .cases-note-top, .cases-note, .stat{
      background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.012));
      border:1px solid var(--line);
      color:var(--text);
    }
    .service-icon{
      background:linear-gradient(140deg,rgba(34,211,238,.16),rgba(139,92,246,.16));
      border:1px solid rgba(120,180,255,.18);
    }
    .price, .pkg-body b, .faq-item summary, .contact-info strong,
    .brand-name, .hero-trust strong{color:#f2f7ff}
    .service-card p, .case-card p, .adv-item p, .pain-item p,
    .step p, .feature-list li, .case-result{color:var(--muted)}

    /* 次级按钮 */
    .btn-ghost{
      background:rgba(255,255,255,.05);
      border:1px solid rgba(120,180,255,.28);
      color:#e9eefb;
    }
    .btn-ghost:hover{
      background:rgba(255,255,255,.1);
      border-color:rgba(56,189,248,.55);
      color:#fff;
    }

    /* 首页旧视觉残留 / 浮动标签 */
    .hero-shot{
      background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
      border:1px solid var(--line);
    }
    .float-chip{
      background:rgba(12,18,32,.88);
      border:1px solid rgba(120,180,255,.22);
      color:#e9eefb;
      backdrop-filter:blur(10px);
    }

    /* 区块底色 */
    .section-alt{
      background:rgba(255,255,255,.022);
      border-top:1px solid var(--line);
      border-bottom:1px solid var(--line);
    }
    .eco-band{background:transparent;border-top:1px solid var(--line)}
    .eco-list li, .section-alt .eco-list li{
      background:rgba(255,255,255,.04);
      border:1px solid rgba(120,180,255,.14);
      color:#c7d6f0;
    }
    .eco-list li:hover{border-color:rgba(56,189,248,.45);color:#a5e9fb}

    /* 数据条、CTA 带、页脚 —— 原为深色底白字，改为与首页一致的暗色 */
    .stats-band{
      background:linear-gradient(180deg,rgba(34,211,238,.06),rgba(139,92,246,.05));
      color:var(--text);
      border-top:1px solid var(--line);
      border-bottom:1px solid var(--line);
    }
    .stat-label{color:var(--muted)}
    .cta-band{
      background:linear-gradient(120deg,rgba(34,211,238,.12) 0%,rgba(139,92,246,.14) 45%,rgba(34,211,238,.12) 100%);
      background-size:220% 100%;
      border-top:1px solid var(--line);
      color:var(--text);
    }
    .site-footer{
      background:rgba(255,255,255,.018);
      border-top:1px solid var(--line);
      color:var(--text);
    }
    .site-footer h4, .site-footer strong{color:#f2f7ff}
    .site-footer a, .site-footer p, .site-footer li{color:var(--muted)}
    .footer-bottom{border-top:1px solid var(--line);color:var(--muted)}

    /* 移动端菜单与悬浮按钮 */
    .dock-btn, .dock-mail, .dock-tel, .dock-wechat{
      background:linear-gradient(150deg,rgba(34,211,238,.18),rgba(139,92,246,.18));
      border:1px solid rgba(120,180,255,.22);
      color:#e9eefb;
    }
    .dock-btn:hover, .dock-mail:hover, .dock-tel:hover, .dock-wechat:hover{
      border-color:rgba(56,189,248,.6);color:#fff;
    }

    /* 表格 / 分隔线等通用元素 */
    table{color:var(--text)}
    th, td{border-color:var(--line)}
    hr{border:0;border-top:1px solid var(--line)}
    blockquote{
      background:rgba(255,255,255,.04);border-left:3px solid var(--cyan);color:var(--muted);
    }
    ::selection{background:rgba(34,211,238,.3);color:#fff}

    /* ============================================================
       顶栏一致性兜底：覆盖 style.css 的白色顶栏（含滚动态）
       ============================================================ */
    .site-header.scrolled{
      background:rgba(6,9,17,.9);
      box-shadow:0 8px 30px rgba(0,0,0,.45);
      border-bottom:1px solid var(--line);
    }
    .site-header.is-scrolled{
      background:rgba(6,9,17,.9);
      box-shadow:0 8px 30px rgba(0,0,0,.45);
    }
    /* 固定顶栏避让：子页横幅预留顶部空间 */
    .page-head{padding-top:132px}
    @media (max-width:768px){ .page-head{padding-top:112px} }

/* ==========================================================================
   表单兜底通道按钮（提交失败时出现，保证线索不丢）
   ========================================================================== */
.fallback-mail-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, 0.45);
  background: linear-gradient(100deg, rgba(34, 211, 238, 0.16), rgba(59, 130, 246, 0.16));
  color: var(--c-text);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.fallback-mail-btn:hover {
  transform: translateY(-2px);
  border-color: rgba(34, 211, 238, 0.8);
  box-shadow: 0 10px 28px rgba(34, 211, 238, 0.22);
}
.form-hint.err {
  color: #ffb4b4;
  background: rgba(255, 90, 90, 0.08);
  border: 1px solid rgba(255, 90, 90, 0.28);
  border-radius: 12px;
  padding: 12px 14px;
  line-height: 1.7;
}

/* ============================================================
   兼容层：原 style.css 中仍被页面使用的规则
   （原文件已下线，此处统一重映射到科技风青蓝紫配色）
   ============================================================ */

.container.narrow { max-width: 820px; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .7; cursor: not-allowed; transform: none; box-shadow: none; }
.brand:hover .brand-mark { transform: rotate(-6deg) scale(1.05); }
.nav-links a:hover { color: var(--c-primary); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.hero-sub { font-size: 18px; color: var(--c-muted); max-width: 520px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 26px 0 30px; }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(56,189,248,.55); }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(56,189,248,.55); }
.advantages .adv-item { text-align: left; }
.contact { background: var(--grad-soft); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-copy h2 { font-size: clamp(24px, 3vw, 32px); }
.contact-info { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 12px; }
.contact-info li { font-size: 15px; color: var(--c-text); }
.form-hint.ok { color: #16a34a; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.contact-info a { color: var(--c-primary); border-bottom: 1px solid rgba(56,189,248,.55); }
.contact-info a:hover { color: var(--c-primary-dark); border-bottom-color: var(--c-primary-dark); }
.copy-btn { margin-left: 10px; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; border: 1px solid rgba(56,189,248,.55); background: var(--c-bg-soft); color: var(--c-primary-dark); cursor: pointer; font-family: inherit; transition: background .15s, color .15s; }
.copy-btn:hover { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
.page-head h1 .grad-text { background-size: 200% 100%; animation: gradMove 6s ease-in-out infinite alternate; }
.page-head .container > .page-sub-en + p { animation: fadeUp .7s ease both; }
.page-head .container > h1 { animation: fadeUp .7s ease both; }
.nav-links a.active { color: var(--c-primary); text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 2px; }
.svc-detail { display: grid; grid-template-columns: 1.45fr .85fr; gap: 36px; align-items: start; }
.svc-detail.reverse { grid-template-columns: .85fr 1.45fr; }
.svc-detail.reverse .svc-text { order: 2; }
.svc-detail.reverse .svc-meta { order: 1; }
.svc-text > p { color: var(--c-muted); }
.svc-meta h3 { font-size: 17px; }
.svc-meta ul { list-style: none; padding: 0; margin: 0 0 14px; }
.svc-meta li::before { content: "•"; position: absolute; left: 4px; color: var(--c-primary); font-weight: 800; }
.price-card .btn { margin-top: auto; }
.case-tags .case-tag { margin-bottom: 0; }
.case-more summary::-webkit-details-marker { display: none; }
.case-more summary::after { content: "＋"; font-size: 13px; }
.case-more[open] summary::after { content: "－"; }
.service-card:hover { transform: translateY(-6px); border-color: rgba(56,189,248,.55); box-shadow: 0 18px 40px rgba(79, 70, 229, .16); }
.case-card:hover { transform: translateY(-6px); border-color: rgba(56,189,248,.55); box-shadow: 0 18px 40px rgba(79, 70, 229, .16); }
.svc-meta:hover { transform: translateY(-6px); border-color: rgba(56,189,248,.55); box-shadow: 0 18px 40px rgba(79, 70, 229, .16); }
.service-card::after { content: ""; position: absolute; top: 0; left: 0; height: 3px; width: 100%; background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .3s ease; }
.case-card::after { content: ""; position: absolute; top: 0; left: 0; height: 3px; width: 100%; background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .3s ease; }
.adv-item::after { content: ""; position: absolute; top: 0; left: 0; height: 3px; width: 100%; background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .3s ease; }
.service-card:hover::after { transform: scaleX(1); }
.case-card:hover::after { transform: scaleX(1); }
.adv-item:hover::after { transform: scaleX(1); }
.section-head .eyebrow { position: relative; padding-left: 14px; }
.section-head .eyebrow::before { content: ""; position: absolute; left: 0; top: 50%; width: 8px; height: 8px; margin-top: -4px; border-radius: 50%; background: var(--c-primary); box-shadow: 0 0 0 4px rgba(79, 70, 229, .14); animation: badgeFloat 3s ease-in-out infinite; }
.section-head h2::after { content: ""; display: block; width: 0; height: 3px; margin: 14px auto 0; border-radius: 3px; background: var(--grad); animation: underGrow .8s ease .2s forwards; }
.section-head h2 .grad-text { background-size: 200% 100%; animation: gradMove 6s ease-in-out infinite alternate; }
.cta-band::before { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(45% 70% at 50% 0%, rgba(99, 102, 241, .18), transparent 65%); }
.reveal { transition-delay: var(--d, 0ms); }
.svc-text h3::before { content: ""; position: absolute; left: 0; top: .28em; bottom: .28em; width: 4px; border-radius: 3px; background: var(--grad); }

@media (max-width: 920px) {
  .svc-detail { grid-template-columns: 1fr; }
  .svc-detail.reverse { grid-template-columns: 1fr; }
  .svc-detail.reverse .svc-text { order: initial; }
  .svc-detail.reverse .svc-meta { order: initial; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 480px) {
  .hero-actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   变量兼容层：把 style.css 的旧变量名重映射到科技风青蓝紫配色
   —— 迁移过来的规则无需逐条改写即可获得统一视觉
   ============================================================ */
:root{
  --c-primary: #22d3ee;
  --c-primary-dark: #7fe3ff;
  --c-secondary: #3b82f6;
  --c-accent: #a855f7;
  --c-ink: #e9eefb;
  --c-text: #e9eefb;
  --c-muted: #93a3c0;
  --c-line: rgba(120,180,255,.13);
  --c-bg: #05070d;
  --c-bg-alt: rgba(255,255,255,.022);
  --c-bg-soft: rgba(56,189,248,.08);
  --grad: linear-gradient(100deg,#22d3ee,#3b82f6 45%,#a855f7);
  --grad-soft: linear-gradient(135deg, rgba(34,211,238,.10), rgba(168,85,247,.10));
  --shadow-sm: 0 1px 3px rgba(0,0,0,.35);
  --shadow-md: 0 10px 30px rgba(0,0,0,.40);
  --shadow-lg: 0 20px 50px rgba(34,211,238,.16);
  --radius-sm: 12px;
  --maxw: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

/* ============================================================
   科技风格增强层 —— 全站统一视觉
   设计约束：动画只使用 transform / opacity，全部可交给 GPU 合成，
             不触发 layout，保证 60fps（移动端 30fps 限帧下亦然）。
   ============================================================ */

/* ---------- 1. 全局网格底纹 + 顶部光晕 ---------- */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:
    linear-gradient(rgba(56,189,248,.042) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,.042) 1px, transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(ellipse 92% 72% at 50% 0%, #000 18%, transparent 78%);
  mask-image:radial-gradient(ellipse 92% 72% at 50% 0%, #000 18%, transparent 78%);
}
body::after{
  content:"";position:fixed;left:0;right:0;top:0;height:430px;z-index:-1;pointer-events:none;
  background:radial-gradient(ellipse 62% 100% at 50% 0%, rgba(34,211,238,.09), transparent 70%);
}

/* ---------- 2. 侧边数据轨（双侧竖直刻度） ---------- */
.tech-frame{position:fixed;inset:0;z-index:88;pointer-events:none}
.tf-ruler{
  position:absolute;top:50%;width:1px;height:190px;
  transform:translateY(-50%);
  background:linear-gradient(to bottom,transparent,rgba(56,189,248,.28),transparent);
}
.tf-ruler::before,.tf-ruler::after{
  content:"";position:absolute;left:-3px;width:7px;height:1px;background:rgba(56,189,248,.36)
}
.tf-ruler::before{top:25%}
.tf-ruler::after{top:75%}
.tf-ruler-l{left:20px}
.tf-ruler-r{right:20px}

/* ---------- 3. 滚动条 ---------- */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:rgba(255,255,255,.02)}
::-webkit-scrollbar-thumb{
  background:linear-gradient(to bottom,rgba(34,211,238,.42),rgba(139,92,246,.42));
  background-clip:content-box;border:2px solid transparent;border-radius:999px
}
::-webkit-scrollbar-thumb:hover{
  background:linear-gradient(to bottom,rgba(34,211,238,.72),rgba(139,92,246,.72));
  background-clip:content-box
}

/* ---------- 4. 卡片：发光描边 + 网格纹理 ---------- */
.glow-card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  padding:1px;
  background:linear-gradient(140deg,rgba(34,211,238,.55),transparent 38%,transparent 62%,rgba(168,85,247,.55));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  opacity:0;transition:opacity .4s var(--ease)
}
.glow-card:hover::before{opacity:1}

/* ---------- 5. 渐变标题：流动 ---------- */
.grad-text{
  background:var(--grad);
  background-size:220% 100%;
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:gradShift 7s linear infinite
}

/* ---------- 6. 选中态 ---------- */
::selection{background:rgba(34,211,238,.28);color:#fff}

/* ---------- 7. 焦点可见性（可访问性） ---------- */
a:focus-visible,button:focus-visible,input:focus-visible,
select:focus-visible,textarea:focus-visible{
  outline:2px solid rgba(34,211,238,.75);
  outline-offset:2px;
  border-radius:6px
}

/* ============================================================
   双端差异化
   ============================================================ */

/* ---------- PC 端（>1024px）：完整体验 ---------- */
@media (min-width:1025px){
  .tech-frame{display:block}
}

/* ---------- 移动端 / 平板（<=1024px）：精简降级 ---------- */
@media (max-width:1024px){
  /* 关闭外框 HUD 的左右刻度，减少合成层与绘制区域 */
  .tf-ruler{display:none}

  /* 卡片：取消 hover 位移，避免移动端 sticky hover 抖动 */
  .glow-card:hover{transform:none}

  /* 触控目标最小 44px（WCAG / iOS HIG） */
  .dock-btn,.to-top,.nav-toggle{
    min-width:44px;min-height:44px
  }

  /* 移动端正文行距放宽，提升可读性 */
  p{line-height:1.8}
}

@media (max-width:480px){
  /* 防止横向溢出 */
  .container{padding-left:16px;padding-right:16px}
}

/* ---------- 尊重系统「减弱动效」设置 ---------- */
@media (prefers-reduced-motion: reduce){
  .grad-text{animation:none}
  *{animation-duration:.001s !important;animation-iteration-count:1 !important}
}

/* ============================================================
   页脚联系方式 —— 图标与文字永不分离，换行后仍保持整齐
   ============================================================ */
.footer-contact{
  list-style:none;
  padding:0;
  margin:14px 0 0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 20px;
  color:#9fb6d6;
  font-size:.88rem;
}
.footer-contact li{
  display:inline-flex;
  align-items:center;
  gap:6px;
  white-space:nowrap;               /* 关键：单项内部不换行 */
}
.footer-contact .fc-ico{
  font-size:.95em;
  line-height:1;
  flex:none;
}
.footer-contact a{
  color:#9fb6d6;
  text-decoration:none;
  transition:color .25s, text-shadow .25s;
}
.footer-contact a:hover{
  color:#7fe3ff;
  text-shadow:0 0 16px rgba(56,189,248,.65);
}

@media (max-width:520px){
  .footer-contact{
    gap:7px 14px;
    font-size:.84rem;
  }
}

/* ---------- 子页背景粒子画布 ---------- */
.bg-canvas{
  position:fixed;
  top:0;left:0;
  width:100%;
  height:100%;
  z-index:-3;              /* 位于所有内容之下，不遮挡任何元素 */
  pointer-events:none;     /* 完全不参与命中测试，零交互开销 */
  display:block;
}

/* ---------- 移动端：粒子层保持，但降低不透明度避免干扰阅读 ---------- */
@media (max-width:768px){
  .bg-canvas{opacity:.75}
}

/* ---------- 移动端动态地球（2D 线框球，英雄区背景运动） ----------
   桌面端用 Three.js 3D 地球；手机端下载 161KB 库 + 跑 WebGL 性价比低，
   改用 2D Canvas 正投影线框球，由 theme.js 注入并渲染。 */
.mglobe-canvas{
  position:absolute;inset:0;width:100%;height:100%;
  z-index:0;display:block;pointer-events:none;
}

/* ---------- 全站光扫效果（子页由 theme.js 注入，复刻英雄页） ----------
   横向扫描光带 + 扫描线纹理，只走 transform（GPU 合成）。
   z-index:-2：位于背景粒子(-3)之上、全部内容之下，不遮挡任何元素。 */
.scan-fx{
  position:fixed;inset:0;z-index:-2;
  pointer-events:none;overflow:hidden;
}
.scan-fx .sf-beam{
  position:absolute;left:0;right:0;top:-200px;height:200px;
  background:linear-gradient(to bottom,transparent,rgba(56,189,248,.12),transparent);
  animation:scanBeam 7.5s linear infinite;
  will-change:transform;
}
.scan-fx .sf-lines{
  position:absolute;left:0;right:0;top:-8px;height:calc(100% + 8px);
  background:repeating-linear-gradient(to bottom,rgba(120,200,255,.045) 0 1px,transparent 1px 4px);
  animation:scanDrift 9s linear infinite;
  will-change:transform;
}
@keyframes scanBeam{to{transform:translateY(calc(100vh + 400px))}}
@keyframes scanDrift{to{transform:translateY(8px)}}

/* ============================================================
   移动端信息密度优化（≤720px）
   目标：同样的屏幕高度展示更多内容 —— 收紧区块节奏、卡片改双排、
   压缩卡片内边距与字号，但不低于可读下限。
   置于文件末尾，确保覆盖前面的响应式规则。
   ============================================================ */
@media (max-width:720px){
  /* 区块节奏 */
  .section{padding:52px 0}
  .section-head{margin-bottom:26px}
  .section-head .eyebrow{margin-bottom:10px}
  .section-head p{margin-top:10px;font-size:.92rem}
  .center-btn{margin-top:28px}
  .stats-band{padding:46px 0}
  .cta-band{padding:64px 0}

  /* 卡片双排：同屏多展示一倍条目 */
  .cards-3{grid-template-columns:repeat(2,1fr);gap:14px}
  .pain-grid{gap:14px}
  .steps{gap:12px}

  /* 服务卡片 */
  .service-card{padding:18px 16px}
  .service-icon{width:42px;height:42px;font-size:1.15rem;margin-bottom:12px}
  .service-card h3{font-size:1rem;margin-bottom:6px}
  .service-card > p{font-size:.84rem;line-height:1.6}
  .feature-list{margin:12px 0 14px;gap:5px}
  .feature-list li{font-size:.8rem;line-height:1.5;padding-left:18px}
  .feature-list li::before{width:6px;height:6px;top:.5em}

  /* 优势卡片 */
  .adv-item{padding:18px 16px}
  .adv-icon{width:38px;height:38px;font-size:1.05rem;margin-bottom:10px}
  .adv-item h3{font-size:.95rem;margin-bottom:6px}
  .adv-item p{font-size:.82rem;line-height:1.6}

  /* 案例卡片（学堂文章列表复用） */
  .case-card{padding:18px 14px;gap:8px}
  .case-card h3{font-size:.95rem}
  .case-card > p{font-size:.82rem;line-height:1.6}
  .case-result{font-size:.8rem;padding-top:10px}
  .case-tag,.case-industry{font-size:.68rem;padding:3px 9px}

  /* 痛点 */
  .pain-item{padding:18px 16px}
  .pain-item h3{font-size:.92rem;margin-bottom:6px;gap:8px}
  .pain-ico{width:28px;height:28px;font-size:.85rem}
  .pain-item p{font-size:.82rem;line-height:1.6}

  /* 流程 */
  .step{padding:18px 14px 16px}
  .step-no{font-size:1.5rem;margin-bottom:6px}
  .step h3{font-size:.92rem;margin-bottom:4px}
  .step p{font-size:.8rem;line-height:1.55}

  /* 数据带 */
  .stat-num{font-size:clamp(1.55rem,7.5vw,2.1rem)}
  .stat-label{font-size:.8rem;margin-top:4px}

  /* 生态 / 行业墙 / 跑马灯 */
  .eco-list{gap:8px;margin-top:26px}
  .eco-list li{padding:7px 14px;font-size:.8rem}
  .industry-wall{margin-top:28px}
  .marquee{margin-top:26px}

  /* CTA */
  .cta-inner{padding:36px 20px;border-radius:22px}
  .cta-inner h2{font-size:clamp(1.35rem,5.6vw,1.7rem)}
  .cta-inner p{margin-top:10px;font-size:.9rem}
  .cta-inner .hero-actions{margin-top:22px}

  /* FAQ */
  .faq-list{gap:8px}
  .faq-item{padding:14px 16px}
  .faq-item summary{font-size:.92rem}
  .faq-item p{font-size:.85rem;margin-top:10px}

  /* 联系页 */
  .contact-info{gap:8px}
  .contact-info li{font-size:.88rem}
  .field{margin-bottom:14px}
  .field input,.field select,.field textarea{padding:11px 13px;font-size:.9rem}
  .contact-form,.help-card{padding:20px 16px}
  .form-hint{font-size:.8rem}

  /* 服务详情 */
  .svc-meta{padding:18px 16px}
  .svc-meta li,.svc-meta p{font-size:.85rem}
  .svc-text h3{margin-top:18px}

  /* 子页横幅 */
  .page-head{padding:60px 0 40px}
  .page-head h1{font-size:clamp(1.55rem,6.4vw,2rem)}
  .page-head p{font-size:.9rem}
  .crumbs{margin-bottom:10px}

  /* 页脚 */
  .site-footer{padding-top:36px}
  .footer-inner{padding-bottom:28px;gap:20px}
}

/* 超小屏（≤400px）：卡片恢复单排，保证可读性 */
@media (max-width:400px){
  .cards-3{grid-template-columns:1fr}
}