:root{
    --bg:#05070f;
    --bg-soft:#0a0f1c;
    --ink:#eef2fb;
    --muted:#9aa7c2;
    --faint:#6b7894;
    --line:rgba(255,255,255,.08);
    --accent:#5b8cff;
    --accent2:#9f7bff;
    --grad:linear-gradient(90deg,#5b8cff,#9f7bff);
    --font-head:"Space Grotesk","Noto Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
    --font-body:"Noto Sans","Space Grotesk",system-ui,-apple-system,"Segoe UI",sans-serif;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  .about_main{
    background:var(--bg);
    color:var(--ink);
    font-family:var(--font-body);
    font-weight:300;
    line-height:1.75;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }
  ::selection{background:rgba(91,140,255,.35);}

  /* ---------- 全局科技网格背景 ---------- */
  .grid-bg{
    position:fixed;inset:0;z-index:-2;
    background:
      linear-gradient(rgba(91,140,255,.045) 1px,transparent 1px),
      linear-gradient(90deg,rgba(91,140,255,.045) 1px,transparent 1px);
    background-size:56px 56px;
    -webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 20%,#000 30%,transparent 100%);
            mask-image:radial-gradient(ellipse 90% 80% at 50% 20%,#000 30%,transparent 100%);
  }
  .glow-orb{
    position:fixed;z-index:-1;border-radius:50%;filter:blur(120px);opacity:.5;pointer-events:none;
  }
  .glow-orb.a{width:52vw;height:52vw;left:-14vw;top:-18vw;background:radial-gradient(circle,rgba(91,140,255,.28),transparent 70%);}
  .glow-orb.b{width:44vw;height:44vw;right:-12vw;top:34vh;background:radial-gradient(circle,rgba(159,123,255,.22),transparent 70%);}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    min-height:100vh;
    display:flex;align-items:center;
    padding:96px clamp(24px,7vw,120px);
    overflow:hidden;
    background:
      linear-gradient(90deg,rgba(5,7,15,.94) 0%,rgba(5,7,15,.78) 42%,rgba(5,7,15,.30) 78%,rgba(5,7,15,.18) 100%),
      linear-gradient(0deg,rgba(5,7,15,.85) 0%,transparent 30%,transparent 75%,rgba(5,7,15,.6) 100%),
      url("/wp-content/images/hero-bg.jpg") center 40% / cover no-repeat;
  }
  .hero-inner{max-width:680px;}

  .eyebrow{
    display:inline-flex;align-items:center;gap:14px;
    font-family:var(--font-head);font-size:13px;letter-spacing:.42em;text-transform:uppercase;
    color:var(--accent);
    margin-bottom:34px;
  }
  .eyebrow::before{content:"";width:46px;height:1px;background:var(--grad);}

  .hero h1{
    font-family:var(--font-head);
    font-weight:600;
    font-size:clamp(38px,5.2vw,72px);
    line-height:1.06;
    letter-spacing:-.01em;
    margin-bottom:30px;
  }
  .hero h1 .line{display:block;overflow:hidden;}
  .hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
  .hero-lead{
    font-size:clamp(16px,1.4vw,20px);
    color:var(--muted);
    max-width:560px;
    margin-bottom:44px;
    font-weight:300;
  }

  .hero-tags{
    display:flex;flex-wrap:wrap;gap:10px 12px;align-items:center;
    font-family:var(--font-head);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);
  }
  .hero-tags span.tag{
    border:1px solid var(--line);border-radius:999px;
    padding:8px 16px;color:var(--ink);
    background:rgba(255,255,255,.04);
    backdrop-filter:blur(6px);
    transition:border-color .3s,background .3s,color .3s,transform .3s;
    cursor:default;
  }
  .hero-tags span.tag:hover{border-color:rgba(91,140,255,.55);background:rgba(91,140,255,.10);transform:translateY(-2px);}

  .scroll-hint{
    position:absolute;left:clamp(24px,7vw,120px);bottom:30px;
    display:flex;align-items:center;gap:12px;
    font-family:var(--font-head);font-size:11px;letter-spacing:.32em;text-transform:uppercase;color:var(--faint);
  }
  .scroll-hint::after{content:"";width:72px;height:1px;background:linear-gradient(90deg,var(--faint),transparent);}

  /* ---------- 正文区 ---------- */
  .story{
    position:relative;
    padding:clamp(72px,9vw,150px) clamp(24px,7vw,120px) clamp(60px,7vw,110px);
    max-width:1180px;margin:0 auto;
  }
  .section-kicker{
    font-family:var(--font-head);font-size:12px;letter-spacing:.4em;text-transform:uppercase;color:var(--accent);
    margin-bottom:18px;display:flex;align-items:center;gap:14px;
  }
  .section-kicker::after{content:"";flex:0 0 90px;height:1px;background:linear-gradient(90deg,rgba(91,140,255,.6),transparent);}

  .story-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(36px,6vw,96px);align-items:start;}
  .story-copy p{font-size:clamp(15px,1.25vw,18px);color:var(--muted);margin-bottom:26px;max-width:640px;}
  .story-copy p:first-of-type{font-size:clamp(18px,1.6vw,24px);color:var(--ink);font-weight:400;line-height:1.65;}
  .story-copy p strong{color:var(--ink);font-weight:600;}
  .story-copy .em{color:var(--ink);}

  .side-stack{display:flex;flex-direction:column;gap:22px;position:sticky;top:40px;}
  .card{
    border:1px solid var(--line);
    border-radius:18px;
    background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
    padding:26px 28px;
    position:relative;overflow:hidden;
  }
  .card::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:var(--grad);opacity:.7;
  }
  .card .card-label{
    font-family:var(--font-head);font-size:11px;letter-spacing:.34em;text-transform:uppercase;color:var(--faint);
    margin-bottom:16px;
  }
  .chip-row{display:flex;flex-wrap:wrap;gap:8px;}
  .chip{
    font-size:13px;letter-spacing:.02em;color:var(--ink);
    border:1px solid var(--line);border-radius:999px;padding:7px 14px;
    background:rgba(255,255,255,.03);
  }
  .chain{
    font-family:var(--font-head);font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);
    display:flex;flex-wrap:wrap;gap:8px 0;align-items:center;
  }
  .chain span{padding:0 12px;border-left:1px solid rgba(91,140,255,.4);}
  .chain span:first-child{border-left:none;padding-left:0;color:var(--ink);}

  .divider{
    height:1px;max-width:1180px;margin:0 auto;
    background:linear-gradient(90deg,transparent,rgba(91,140,255,.5),rgba(159,123,255,.5),transparent);
  }

  /* ---------- 滚动浮现 ---------- */
  .reveal{opacity:0;transform:translateY(26px);transition:opacity .9s cubic-bezier(.2,.6,.2,1),transform .9s cubic-bezier(.2,.6,.2,1);}
  .reveal.on{opacity:1;transform:none;}

  @media (max-width:900px){
    .story-grid{grid-template-columns:1fr;}
    .side-stack{position:static;}
    .hero h1{font-size:clamp(34px,9vw,52px);}
  }
  @media (max-width:560px){
    .hero{padding-top:70px;}
    .hero-tags{font-size:11px;}
    footer{flex-direction:column;align-items:flex-start;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
    .reveal{opacity:1;transform:none;}
  }