:root{
    --bg-primary:#0a0d12;
    --bg-secondary:#11161d;
    --bg-tertiary:#161c26;
    --bg-glass:rgba(22,28,38,.55);
    --border-color:rgba(255,255,255,.08);
    --border-strong:rgba(255,255,255,.16);
    --text-primary:#e6edf3;
    --text-secondary:#9aa4b2;
    --text-tertiary:#5f6a7a;
    --accent:#5aaac9;
    --accent-2:#7dd3fc;
    --accent-3:#a78bfa;
    --accent-warm:#f5a97f;
    --accent-pink:#f4a8c0;
    --accent-glow:rgba(90,170,201,.35);
    --accent-warm-glow:rgba(245,169,127,.3);
    --status-green:#22c55e;
    --radius:14px;
    --radius-lg:20px;
    --radius-xl:28px;
    --shadow-lg:0 20px 60px rgba(0,0,0,.45);
  }

  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  html{background:var(--bg-primary);}
  body{
    font-family:'Inter','Noto Sans SC',-apple-system,sans-serif;
    color:var(--text-primary);line-height:1.6;
    overflow-x:hidden;cursor:none;
    background:transparent;
  }
  /* 鼠标位置全局光斑 */
  body::after{
    content:"";position:fixed;inset:0;pointer-events:none;z-index:1;
    background:radial-gradient(420px 420px at var(--mx,50%) var(--my,50%), rgba(90,170,201,.08), transparent 60%);
    transition:background .15s ease;
  }

  ::selection{background:var(--accent-glow);color:#fff;}
  a{color:inherit;text-decoration:none;cursor:none;}
  button{font-family:inherit;cursor:none;border:none;background:none;color:inherit;}
  .mono{font-family:'JetBrains Mono',monospace;}

  /* ====== Custom Cursor ====== */
  .cursor-dot,.cursor-ring{
    position:fixed;top:0;left:0;pointer-events:none;z-index:9999;
    transform:translate(-50%,-50%);
    transition:opacity .25s ease, width .25s ease, height .25s ease, border-color .25s ease, background .25s ease;
    will-change:transform;
  }
  .cursor-dot{
    width:6px;height:6px;border-radius:50%;
    background:var(--accent);
    box-shadow:0 0 12px var(--accent);
  }
  .cursor-ring{
    width:34px;height:34px;border-radius:50%;
    border:1.5px solid rgba(90,170,201,.5);
    backdrop-filter:invert(.1);
    transition:transform .12s linear, width .25s ease, height .25s ease, border-color .25s ease, background .25s ease;
  }
  .cursor-ring.hover{
    width:60px;height:60px;
    border-color:transparent;
    background:rgba(90,170,201,.18);
  }
  .cursor-ring.hover-text{
    width:80px;height:80px;
    background:var(--accent);
    border-color:transparent;
    mix-blend-mode:difference;
  }
  @media(hover:none){
    body{cursor:auto;}
    a,button{cursor:auto;}
    .cursor-dot,.cursor-ring{display:none;}
  }

  .wrap{max-width:1280px;margin:0 auto;padding:0 32px;position:relative;z-index:2;}

  /* ====== Nav ====== */
  .nav{
    position:fixed;top:0;left:0;right:0;z-index:100;
    backdrop-filter:blur(20px) saturate(180%);
    background:rgba(10,13,18,.65);
    border-bottom:1px solid var(--border-color);
  }
  body.bg-mode-pixel .nav,
  body.bg-mode-glow .nav{
    backdrop-filter:blur(30px) saturate(200%);
    background:rgba(10,13,18,.85);
  }
  .nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;}
  .logo{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.5px;}
  .logo-mark{
    width:32px;height:32px;border-radius:9px;
    background:linear-gradient(135deg,var(--accent) 0%,var(--accent-3) 100%);
    display:grid;place-items:center;color:#fff;font-weight:800;font-size:14px;
    box-shadow:0 6px 18px var(--accent-glow);
  }
  .logo-text{font-size:15px;}
  .logo-text small{color:var(--text-tertiary);font-weight:500;margin-left:6px;}
  .nav-links{display:flex;align-items:center;gap:6px;}
  .nav-link{
    padding:8px 14px;font-size:13.5px;color:var(--text-secondary);
    border-radius:8px;transition:all .25s ease;
    display:flex;align-items:center;gap:6px;position:relative;
  }
  .nav-link:hover,.nav-link.active{color:var(--text-primary);background:rgba(255,255,255,.04);}
  .nav-link .num{font-size:11px;color:var(--accent);opacity:.7;}
  .nav-cta{
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 16px;font-size:13.5px;font-weight:500;
    background:linear-gradient(135deg,var(--accent),#4a8fa8);
    color:#fff;border-radius:10px;
    box-shadow:0 6px 18px var(--accent-glow);
    transition:all .25s ease;
  }

  /* ====== Hero ====== */
  .hero{position:relative;padding:160px 0 100px;overflow:hidden;}
  .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:64px;align-items:center;}

  .badge-row{display:flex;align-items:center;gap:10px;margin-bottom:24px;}
  .pill{
    display:inline-flex;align-items:center;gap:6px;
    padding:6px 12px;border-radius:999px;
    background:rgba(90,170,201,.12);border:1px solid rgba(90,170,201,.25);
    color:var(--accent);font-size:12px;font-weight:500;
  }
  .pill .dot{
    width:6px;height:6px;border-radius:50%;background:var(--accent);
    box-shadow:0 0 8px var(--accent);
    animation:breath 2s ease-in-out infinite;
  }
  @keyframes breath{0%,100%{opacity:.5;}50%{opacity:1;}}
  .pill-secondary{background:rgba(255,255,255,.04);border:1px solid var(--border-color);color:var(--text-secondary);}

  .hero-title{
    font-size:64px;line-height:1.05;letter-spacing:-1.5px;font-weight:800;
    margin-bottom:24px;
  }
  .hero-title .grad{
    background:linear-gradient(135deg,var(--accent),var(--accent-2) 35%,var(--accent-3));
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero-title .muted{color:var(--text-tertiary);font-weight:500;}

  /* 文字逐字浮现 */
  .reveal-char{display:inline-block;opacity:0;transform:translateY(40px);}
  .reveal-char.in{animation:charIn .6s cubic-bezier(.2,.8,.2,1) forwards;}
  @keyframes charIn{to{opacity:1;transform:translateY(0);}}

  .hero-desc{font-size:16.5px;color:var(--text-secondary);max-width:560px;margin-bottom:36px;}
  .hero-desc strong{color:var(--text-primary);font-weight:600;}

  .hero-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;}
  .btn{
    display:inline-flex;align-items:center;gap:8px;
    padding:13px 24px;border-radius:12px;font-size:14px;font-weight:600;
    transition:all .25s ease;will-change:transform;position:relative;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--accent),#4a8fa8);color:#fff;
    box-shadow:0 10px 30px var(--accent-glow);
  }
  .btn-ghost{
    background:rgba(255,255,255,.04);border:1px solid var(--border-color);
    color:var(--text-primary);
  }
  .btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--border-strong);}
  .magnetic{transition:transform .25s cubic-bezier(.2,.8,.2,1);}

  .hero-stats{display:flex;gap:36px;margin-top:48px;padding-top:32px;border-top:1px solid var(--border-color);}
  .stat .v{font-size:28px;font-weight:700;letter-spacing:-.5px;}
  .stat .v span{color:var(--accent);}
  .stat .k{font-size:12px;color:var(--text-tertiary);margin-top:4px;}

  /* Hero right code card */
  .hero-right{position:relative;}
  .code-card{
    background:var(--bg-glass);border:1px solid var(--border-color);
    border-radius:var(--radius-lg);overflow:hidden;
    box-shadow:var(--shadow-lg);backdrop-filter:blur(20px);
    transform:perspective(1200px) rotateY(-4deg) rotateX(4deg);
    transition:transform .6s ease;
  }
  .code-head{
    display:flex;align-items:center;justify-content:space-between;
    padding:12px 16px;border-bottom:1px solid var(--border-color);
    background:rgba(0,0,0,.2);
  }
  .code-dots{display:flex;gap:6px;}
  .code-dots i{width:11px;height:11px;border-radius:50%;display:block;}
  .code-dots i:nth-child(1){background:#ff5f57;}
  .code-dots i:nth-child(2){background:#febc2e;}
  .code-dots i:nth-child(3){background:#28c840;}
  .code-tab{font-size:12px;color:var(--text-tertiary);font-family:'JetBrains Mono',monospace;}
  .code-body{
    padding:20px 22px;font-family:'JetBrains Mono',monospace;
    font-size:13px;line-height:1.85;min-height:300px;
    position:relative;
  }
  .code-body .ln{color:var(--text-tertiary);display:inline-block;width:24px;text-align:right;margin-right:14px;user-select:none;}
  .ck{color:#c084fc;} .cs{color:#7dd3fc;} .cv{color:#86efac;} .cc{color:var(--text-tertiary);font-style:italic;} .cf{color:#fbbf24;} .cp{color:var(--text-secondary);} .cw{color:var(--accent-warm);}
  .code-row{opacity:0;transform:translateY(4px);transition:opacity .2s ease,transform .2s ease;}
  .code-row.show{opacity:1;transform:translateY(0);}
  .code-caret{
    display:inline-block;width:7px;height:14px;
    background:var(--accent);vertical-align:-2px;
    margin-left:2px;animation:caret-blink 1s steps(2) infinite;
  }
  @keyframes caret-blink{50%{opacity:0;}}

  /* 全站背景：默认渐变 + 三段视频，可切换 */
  .bg-stage{
    position:fixed;inset:0;overflow:hidden;pointer-events:none;z-index:0;
  }
  .bg-default{
    position:absolute;inset:0;
    background:
      radial-gradient(1200px 600px at 80% -10%, rgba(90,170,201,.18), transparent 60%),
      radial-gradient(900px 500px at -10% 30%, rgba(167,139,250,.12), transparent 60%),
      radial-gradient(700px 500px at 110% 70%, rgba(245,169,127,.08), transparent 60%),
      var(--bg-primary);
  }
  .bg-video{
    position:absolute;inset:0;width:100%;height:100%;
    object-fit:cover;object-position:center;
    opacity:0;transition:opacity .6s ease;
    filter:saturate(112%) contrast(104%);
    will-change:opacity;
  }
  body.bg-mode-pixel .bg-video[data-bg="pixel"],
  body.bg-mode-glow .bg-video[data-bg="glow"]{opacity:.9;}
  .hero-video-overlay{
    position:absolute;inset:0;
    background:
      radial-gradient(120% 100% at 50% 30%, rgba(10,13,18,.10) 0%, rgba(10,13,18,.52) 82%),
      linear-gradient(180deg, rgba(10,13,18,.42) 0%, rgba(10,13,18,.14) 42%, rgba(10,13,18,.72) 100%);
  }
  body.bg-mode-pixel .hero-video-overlay,
  body.bg-mode-glow .hero-video-overlay{
    background:
      radial-gradient(120% 100% at 50% 30%, rgba(10,13,18,.40) 0%, rgba(10,13,18,.75) 82%),
      linear-gradient(180deg, rgba(10,13,18,.65) 0%, rgba(10,13,18,.40) 42%, rgba(10,13,18,.85) 100%);
  }

  /* 背景切换控制器（导航栏内） */
  .bg-switch{
    position:relative;pointer-events:auto;
    margin-left:8px;
  }
  .bg-toggle{
    width:36px;height:36px;border-radius:8px;
    display:grid;place-items:center;
    color:var(--text-secondary);
    background:rgba(255,255,255,.04);
    border:1px solid transparent;
    transition:all .25s ease;pointer-events:auto;
    user-select:none;-webkit-tap-highlight-color:transparent;
  }
  .bg-toggle:hover{color:var(--text-primary);background:rgba(255,255,255,.08);border-color:var(--border-strong);}
  .bg-toggle.active{color:#fff;background:var(--accent);border-color:transparent;}
  .bg-menu{
    position:absolute;right:0;top:calc(100% + 8px);
    width:180px;padding:8px;
    background:rgba(15,20,28,.95);
    -webkit-backdrop-filter:blur(28px) saturate(180%);
    backdrop-filter:blur(28px) saturate(180%);
    border:1px solid rgba(255,255,255,.14);
    border-radius:12px;
    box-shadow:0 20px 50px rgba(0,0,0,.4);
    display:none;flex-direction:column;gap:6px;
    overflow:hidden;
    z-index:1000;
  }
  .bg-menu.open{display:flex;animation:bgMenuIn .2s ease;}
  @keyframes bgMenuIn{
    from{opacity:0;transform:translateY(4px) scale(.98);}
    to{opacity:1;transform:translateY(0) scale(1);}
  }
  .bg-menu-item{
    display:flex;align-items:center;gap:10px;
    padding:8px 10px;border-radius:10px;
    background:rgba(255,255,255,.03);border:1px solid transparent;
    color:var(--text-secondary);font-size:12px;font-weight:500;
    transition:all .2s ease;pointer-events:auto;
    user-select:none;-webkit-tap-highlight-color:transparent;
    text-align:left;
  }
  .bg-menu-item:hover{background:rgba(255,255,255,.08);border-color:var(--border-strong);color:var(--text-primary);}
  .bg-menu-item.active{background:rgba(90,170,201,.15);border-color:var(--accent-glow);color:#fff;}
  .bg-menu-item.active .bg-thumb{border-color:var(--accent);}
  .bg-thumb{
    width:24px;height:24px;border-radius:6px;
    border:2px solid rgba(255,255,255,.12);
    flex-shrink:0;
    transition:border-color .2s ease;
  }

  /* ===== 液态玻璃（Liquid Glass）统一质感 ===== */
  .nav, .code-card, .tech-card, .note, .work-card, .pm-cell, .pcard, .rr-item, .blog-modal{
    -webkit-backdrop-filter:blur(24px) saturate(170%);
    backdrop-filter:blur(24px) saturate(170%);
  }
  .note, .pm-cell, .pcard, .rr-item, .code-card, .work-card{
    position:relative;overflow:hidden;
  }
  .bg-switch{position:relative;}
  .note::before, .pm-cell::before, .pcard::before, .rr-item::before, .code-card::before, .work-card::before{
    content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
    background:linear-gradient(135deg, rgba(255,255,255,.18) 0%, rgba(255,255,255,.05) 26%, transparent 52%);
    mix-blend-mode:screen;opacity:.6;
  }
  .tech-card::after{
    content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
    background:linear-gradient(135deg, rgba(255,255,255,.16) 0%, rgba(255,255,255,.04) 24%, transparent 50%);
    mix-blend-mode:screen;opacity:.55;
  }
  .note, .pm-cell, .pcard, .rr-item, .work-card{
    border-color:rgba(255,255,255,.12);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.10), var(--shadow-lg);
  }

  /* Marquee  滚动文字（低调 ticker 风格） */
  .marquee{
    border-top:1px solid var(--border-color);
    border-bottom:1px solid var(--border-color);
    background:rgba(255,255,255,.015);
    padding:14px 0;overflow:hidden;
    position:relative;z-index:2;
    mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
    -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  }
  .marquee-track{display:flex;gap:40px;white-space:nowrap;animation:marquee 38s linear infinite;}
  .marquee span{
    font-family:'JetBrains Mono',monospace;
    font-size:13px;font-weight:500;letter-spacing:.5px;
    color:var(--text-tertiary);opacity:.7;
    display:inline-flex;align-items:center;gap:14px;
    text-transform:uppercase;
  }
  .marquee span em{color:var(--accent);font-style:normal;opacity:.9;}
  .marquee span::after{content:"◆";color:var(--accent);font-size:8px;opacity:.6;}
  @keyframes marquee{from{transform:translateX(0);}to{transform:translateX(-50%);}}

  /* ====== Section base ====== */
  section{padding:110px 0;position:relative;}
  .section-head{margin-bottom:64px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
  .section-eyebrow{
    font-family:'JetBrains Mono',monospace;
    font-size:12px;color:var(--accent);letter-spacing:1.5px;
    text-transform:uppercase;margin-bottom:14px;
    display:flex;align-items:center;gap:10px;
  }
  .section-eyebrow::before{content:"";width:24px;height:1px;background:var(--accent);}
  .section-title{font-size:44px;font-weight:700;letter-spacing:-1px;line-height:1.15;max-width:760px;}
  .section-title em{font-style:normal;color:var(--accent);}
  .section-desc{font-size:15px;color:var(--text-secondary);max-width:520px;margin-top:14px;}

  /* 滚动渐入 */
  .reveal{opacity:0;transform:translateY(40px);transition:opacity .8s ease, transform .8s cubic-bezier(.2,.8,.2,1);}
  .reveal.in{opacity:1;transform:translateY(0);}
  .reveal-stagger > *{opacity:0;transform:translateY(30px);transition:opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1);}
  .reveal-stagger.in > *{opacity:1;transform:translateY(0);}
  .reveal-stagger.in > *:nth-child(1){transition-delay:.05s;}
  .reveal-stagger.in > *:nth-child(2){transition-delay:.15s;}
  .reveal-stagger.in > *:nth-child(3){transition-delay:.25s;}
  .reveal-stagger.in > *:nth-child(4){transition-delay:.35s;}
  .reveal-stagger.in > *:nth-child(5){transition-delay:.45s;}
  .reveal-stagger.in > *:nth-child(6){transition-delay:.55s;}

  /* ====== About ====== */
  .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;}
  .about-card{
    background:var(--bg-secondary);border:1px solid var(--border-color);
    border-radius:var(--radius-lg);padding:32px;
    position:relative;overflow:hidden;
    transition:border-color .3s ease, transform .3s ease;
  }
  /* spotlight：跟随鼠标位置的高光 */
  .spotlight{position:relative;}
  .spotlight::before{
    content:"";position:absolute;inset:0;border-radius:inherit;
    background:radial-gradient(400px 400px at var(--mx,50%) var(--my,50%), rgba(90,170,201,.15), transparent 50%);
    opacity:0;transition:opacity .3s ease;pointer-events:none;
  }
  .spotlight:hover::before{opacity:1;}
  .spotlight:hover{border-color:var(--border-strong);}

  .about-card-title{font-size:18px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:10px;}
  .about-card-title svg{color:var(--accent);}
  .about-card-desc{color:var(--text-secondary);font-size:14px;margin-bottom:24px;}
  .skill-list{display:flex;flex-wrap:wrap;gap:8px;}
  .skill-chip{
    padding:6px 12px;border-radius:8px;
    background:rgba(255,255,255,.04);border:1px solid var(--border-color);
    font-size:12.5px;color:var(--text-secondary);
    display:inline-flex;align-items:center;gap:6px;transition:all .2s ease;
  }
  .skill-chip:hover{background:rgba(90,170,201,.08);border-color:rgba(90,170,201,.3);color:var(--text-primary);}
  .skill-chip i{width:6px;height:6px;border-radius:50%;background:var(--accent);}
  .stack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px;}
  .stack-item{
    padding:14px 12px;border-radius:12px;
    background:rgba(255,255,255,.03);border:1px solid var(--border-color);
    text-align:center;transition:all .25s ease;
  }
  .stack-item:hover{background:rgba(90,170,201,.06);border-color:rgba(90,170,201,.25);transform:translateY(-2px);}
  .stack-item .icon{font-size:22px;margin-bottom:6px;}
  .stack-item .name{font-size:11.5px;color:var(--text-secondary);font-weight:500;}

  /* ====== Numbers banner ====== */
  .numbers{
    display:grid;grid-template-columns:repeat(4,1fr);gap:0;
    background:rgba(255,255,255,.015);
    border:1px solid var(--border-color);
    border-radius:var(--radius-lg);overflow:hidden;
  }
  .num-cell{
    padding:24px 22px;text-align:left;position:relative;
    border-right:1px solid var(--border-color);
  }
  .num-cell:last-child{border-right:none;}
  .num-cell .big{font-size:32px;font-weight:700;letter-spacing:-1px;line-height:1;}
  .num-cell .big .unit{font-size:16px;color:var(--accent);margin-left:3px;font-weight:600;}
  .num-cell:nth-child(2) .big .unit{color:var(--accent-warm);}
  .num-cell:nth-child(4) .big .unit{color:var(--status-green);}
  .num-cell .lab{font-size:11.5px;color:var(--text-tertiary);margin-top:8px;letter-spacing:.3px;}
  .num-cell .icon{
    position:absolute;top:20px;right:20px;
    width:26px;height:26px;border-radius:7px;
    background:rgba(90,170,201,.08);color:var(--accent);opacity:.7;
    display:grid;place-items:center;
  }
  .num-cell:nth-child(2) .icon{background:rgba(245,169,127,.08);color:var(--accent-warm);}
  .num-cell:nth-child(4) .icon{background:rgba(34,197,94,.08);color:var(--status-green);}

  /* ====== Works ====== */
  .works-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:stretch;}
  .work-card{
    background:var(--bg-secondary);border:1px solid var(--border-color);
    border-radius:var(--radius-lg);overflow:hidden;position:relative;
    transition:border-color .3s ease, box-shadow .3s ease, transform .3s ease;
    display:flex;flex-direction:column;
    transform-style:preserve-3d;will-change:transform;
    min-height:480px;
  }
  .work-card.big{grid-column:span 6;}
  .work-card.small{grid-column:span 6;}
  .work-card.mid{grid-column:span 4;}
  .work-cover{height:220px;position:relative;overflow:hidden;flex-shrink:0;}
  .work-card.big .work-cover{height:250px;}
  .work-card.small .work-cover{height:250px;}

  .cover-film{
    background:
      radial-gradient(800px 400px at 20% 100%, rgba(90,170,201,.35), transparent 60%),
      radial-gradient(600px 300px at 100% 0%, rgba(167,139,250,.25), transparent 60%),
      linear-gradient(135deg,#1a2332,#0f1620);
    display:grid;place-items:center;
  }
  .mock-window{
    width:88%;height:80%;border-radius:10px;
    background:rgba(15,22,32,.85);border:1px solid rgba(255,255,255,.1);
    box-shadow:0 20px 50px rgba(0,0,0,.5);
    overflow:hidden;display:flex;flex-direction:column;
  }
  .mock-bar{height:24px;background:rgba(0,0,0,.4);display:flex;align-items:center;padding:0 10px;gap:5px;}
  .mock-bar i{width:7px;height:7px;border-radius:50%;}
  .mock-bar i:nth-child(1){background:#ff5f57;}
  .mock-bar i:nth-child(2){background:#febc2e;}
  .mock-bar i:nth-child(3){background:#28c840;}
  .mock-body{flex:1;padding:12px;display:flex;gap:8px;}
  .mock-side{width:60px;display:flex;flex-direction:column;gap:6px;}
  .mock-side i{height:8px;border-radius:3px;background:rgba(255,255,255,.06);}
  .mock-side i:first-child{background:rgba(90,170,201,.4);}
  .mock-main{flex:1;display:flex;flex-direction:column;gap:6px;}
  .mock-main i{height:10px;border-radius:3px;background:rgba(255,255,255,.05);}
  .mock-main i:nth-child(1){width:60%;background:rgba(255,255,255,.1);height:14px;}
  .mock-rows{flex:1;display:flex;flex-direction:column;gap:4px;margin-top:4px;}
  .mock-rows i{height:7px;border-radius:2px;background:rgba(255,255,255,.04);}

  .cover-ai{
    background:
      radial-gradient(circle at 30% 30%, rgba(167,139,250,.4), transparent 50%),
      radial-gradient(circle at 70% 70%, rgba(125,211,252,.35), transparent 50%),
      linear-gradient(135deg,#1e1b3a,#0a0d12);
    display:grid;place-items:center;
  }
  .ai-pills{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:80%;}
  .ai-pill{
    aspect-ratio:1;border-radius:10px;
    border:1px solid rgba(255,255,255,.1);
    display:grid;place-items:center;font-size:22px;
    backdrop-filter:blur(6px);transition:transform .3s ease;
  }
  .ai-pill:nth-child(1){background:rgba(248,113,113,.15);}
  .ai-pill:nth-child(2){background:rgba(167,139,250,.18);}
  .ai-pill:nth-child(3){background:rgba(125,211,252,.18);}
  .ai-pill:nth-child(4){background:rgba(34,197,94,.15);}
  .ai-pill:nth-child(5){background:rgba(251,191,36,.15);transform:scale(1.06);border-color:rgba(90,170,201,.6);box-shadow:0 0 18px rgba(90,170,201,.4);}
  .ai-pill:nth-child(6){background:rgba(244,114,182,.15);}
  .ai-pill:nth-child(7){background:rgba(96,165,250,.15);}
  .ai-pill:nth-child(8){background:rgba(56,189,248,.15);}
  .ai-pill:nth-child(9){background:rgba(192,132,252,.15);}

  .cover-comp{background:linear-gradient(135deg,#0d1f2b,#0a0d12);display:grid;place-items:center;}
  .comp-stack{display:flex;flex-direction:column;gap:10px;width:75%;}
  .comp-btn{padding:10px 16px;border-radius:8px;font-size:11px;font-weight:500;color:#fff;display:flex;align-items:center;gap:8px;}
  .comp-btn.p{background:linear-gradient(135deg,var(--accent),#4a8fa8);box-shadow:0 6px 16px var(--accent-glow);}
  .comp-btn.g{background:rgba(255,255,255,.06);border:1px solid var(--border-color);color:var(--text-secondary);}
  .comp-input{padding:8px 12px;border-radius:8px;background:rgba(0,0,0,.3);border:1px solid var(--border-color);font-size:11px;color:var(--text-tertiary);}
  .comp-tabs{display:flex;background:rgba(0,0,0,.3);border-radius:8px;padding:3px;gap:3px;}
  .comp-tabs span{flex:1;text-align:center;padding:4px;font-size:10px;border-radius:6px;color:var(--text-tertiary);}
  .comp-tabs span.a{background:rgba(90,170,201,.2);color:var(--accent);}

  .cover-dash{background:linear-gradient(135deg,#1a1530,#0a0d12);display:grid;place-items:center;padding:14px;}
  .dash-mock{width:90%;height:85%;display:flex;flex-direction:column;gap:8px;}
  .dash-row{display:flex;gap:8px;flex:1;}
  .dash-box{flex:1;background:rgba(255,255,255,.04);border:1px solid var(--border-color);border-radius:8px;padding:8px;display:flex;flex-direction:column;justify-content:space-between;}
  .dash-num{font-size:18px;font-weight:700;}
  .dash-num.up{color:var(--status-green);}
  .dash-lab{font-size:9px;color:var(--text-tertiary);}
  .dash-spark{height:18px;display:flex;align-items:flex-end;gap:2px;}
  .dash-spark i{flex:1;background:linear-gradient(180deg,var(--accent),transparent);border-radius:1px;}

  /* ====== 新增封面：AI 短剧画布 ====== */
  .cover-drama{
    background:
      radial-gradient(600px 300px at 0% 0%, rgba(245,169,127,.22), transparent 55%),
      radial-gradient(500px 300px at 100% 100%, rgba(244,168,192,.18), transparent 55%),
      linear-gradient(135deg,#2a1a1f,#0a0d12);
    display:grid;place-items:center;padding:18px;
  }
  .drama-board{width:90%;height:78%;display:flex;flex-direction:column;gap:8px;position:relative;}
  .drama-row{display:flex;gap:8px;flex:1;}
  .drama-shot{
    flex:1;border-radius:8px;border:1px solid rgba(255,255,255,.1);
    background:rgba(0,0,0,.4);overflow:hidden;position:relative;
    display:flex;flex-direction:column;
  }
  .drama-shot .shot-top{flex:1;background:linear-gradient(135deg,rgba(245,169,127,.35),rgba(244,168,192,.2));}
  .drama-shot:nth-child(2) .shot-top{background:linear-gradient(135deg,rgba(167,139,250,.35),rgba(90,170,201,.2));}
  .drama-shot:nth-child(3) .shot-top{background:linear-gradient(135deg,rgba(125,211,252,.3),rgba(167,139,250,.2));}
  .drama-shot .shot-lab{
    font-size:9px;font-family:'JetBrains Mono',monospace;
    color:var(--text-tertiary);padding:3px 6px;
    background:rgba(0,0,0,.4);border-top:1px solid rgba(255,255,255,.05);
  }
  .drama-shot.curr{border-color:var(--accent-warm);box-shadow:0 0 0 1px var(--accent-warm),0 0 18px rgba(245,169,127,.35);}
  .drama-timeline{
    height:14px;border-radius:4px;background:rgba(255,255,255,.04);
    display:flex;gap:2px;padding:2px;align-items:center;
  }
  .drama-timeline i{flex:1;height:100%;border-radius:2px;background:rgba(255,255,255,.06);}
  .drama-timeline i.on{background:var(--accent-warm);}
  .drama-timeline i.cur{background:var(--accent-warm);box-shadow:0 0 8px var(--accent-warm-glow);}

  /* ====== 新增封面：园区智能体 ====== */
  .cover-agent{
    background:
      radial-gradient(700px 400px at 20% 20%, rgba(90,170,201,.28), transparent 55%),
      radial-gradient(600px 400px at 90% 90%, rgba(34,197,94,.16), transparent 55%),
      linear-gradient(135deg,#10202a,#0a0d12);
    display:grid;place-items:center;padding:18px;
  }
  .agent-chat{
    width:88%;height:82%;display:flex;gap:10px;
    background:rgba(15,22,32,.6);border:1px solid rgba(255,255,255,.08);
    border-radius:10px;padding:10px;backdrop-filter:blur(6px);
  }
  .agent-side{
    width:44px;display:flex;flex-direction:column;gap:8px;align-items:center;
    padding:4px;border-right:1px solid rgba(255,255,255,.06);
  }
  .agent-side .av{
    width:28px;height:28px;border-radius:8px;
    background:linear-gradient(135deg,var(--accent),var(--accent-3));
    display:grid;place-items:center;color:#fff;font-size:11px;font-weight:700;
  }
  .agent-side i{
    width:24px;height:24px;border-radius:6px;background:rgba(255,255,255,.04);
    display:grid;place-items:center;font-size:11px;color:var(--text-tertiary);
  }
  .agent-side i.on{background:rgba(90,170,201,.18);color:var(--accent);}
  .agent-main{flex:1;display:flex;flex-direction:column;gap:6px;min-width:0;}
  .agent-msg{
    font-size:10px;padding:7px 10px;border-radius:8px;line-height:1.5;
    max-width:90%;word-break:break-word;
  }
  .agent-msg.me{align-self:flex-end;background:rgba(90,170,201,.2);color:#cfe8f1;border:1px solid rgba(90,170,201,.3);}
  .agent-msg.bot{
    align-self:flex-start;background:rgba(255,255,255,.05);
    color:var(--text-secondary);border:1px solid rgba(255,255,255,.06);
  }
  .agent-actions{display:flex;gap:5px;flex-wrap:wrap;margin-top:2px;}
  .agent-action{
    font-size:9px;padding:3px 7px;border-radius:5px;
    background:rgba(34,197,94,.12);color:var(--status-green);
    border:1px solid rgba(34,197,94,.25);
  }
  .agent-action.warm{background:rgba(245,169,127,.12);color:var(--accent-warm);border-color:rgba(245,169,127,.3);}
  .agent-typing{
    display:inline-flex;gap:3px;padding:6px 8px;background:rgba(255,255,255,.05);
    border-radius:8px;align-self:flex-start;
  }
  .agent-typing i{width:4px;height:4px;border-radius:50%;background:var(--accent);animation:typing 1.4s infinite ease-in-out;}
  .agent-typing i:nth-child(2){animation-delay:.2s;}
  .agent-typing i:nth-child(3){animation-delay:.4s;}
  @keyframes typing{0%,60%,100%{opacity:.3;transform:translateY(0);}30%{opacity:1;transform:translateY(-3px);}}

  /* ====== 卡片 hover: case study overlay ====== */
  .work-card .case-overlay{
    position:absolute;inset:0;background:rgba(10,13,18,.78);
    backdrop-filter:blur(4px);
    display:flex;align-items:center;justify-content:center;flex-direction:column;gap:14px;
    opacity:0;transition:opacity .35s ease;pointer-events:none;z-index:3;
  }
  .work-card .case-cover{position:relative;overflow:hidden;}
  .work-card:hover .case-overlay{opacity:1;}
  .case-play{
    width:62px;height:62px;border-radius:50%;
    background:linear-gradient(135deg,var(--accent),var(--accent-3));
    display:grid;place-items:center;color:#fff;
    box-shadow:0 12px 32px rgba(90,170,201,.45);
    transform:scale(.85);transition:transform .35s ease;
  }
  .work-card:hover .case-play{transform:scale(1);}
  .case-play svg{margin-left:3px;}
  .case-text{
    font-family:'JetBrains Mono',monospace;font-size:11px;
    color:var(--text-secondary);letter-spacing:1.5px;text-transform:uppercase;
    display:flex;align-items:center;gap:8px;
  }
  .case-text::before,.case-text::after{content:"";width:18px;height:1px;background:var(--text-tertiary);}
  /* hover 时 cover 内元素轻微推进 */
  .work-card[data-case] .work-cover > *:not(.case-overlay){transition:transform .5s ease,filter .5s ease;}
  .work-card[data-case]:hover .work-cover > *:not(.case-overlay){transform:scale(1.04);filter:blur(2px);}

  .work-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1;}
  .work-tags{display:flex;gap:8px;flex-wrap:wrap;}
  .work-tag{padding:3px 10px;font-size:11px;border-radius:6px;background:rgba(90,170,201,.1);color:var(--accent);border:1px solid rgba(90,170,201,.2);}
  .work-tag.alt{background:rgba(167,139,250,.1);color:var(--accent-3);border-color:rgba(167,139,250,.2);}
  .work-tag.warm{background:rgba(245,169,127,.12);color:var(--accent-warm);border-color:rgba(245,169,127,.3);}
  .work-title{font-size:20px;font-weight:600;}
  .work-desc{font-size:13.5px;color:var(--text-secondary);line-height:1.65;}
  .work-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:14px;border-top:1px solid var(--border-color);font-size:12px;color:var(--text-tertiary);}
  .work-arrow{width:32px;height:32px;border-radius:8px;background:rgba(90,170,201,.1);color:var(--accent);display:grid;place-items:center;transition:all .25s ease;}
  .work-card:hover .work-arrow{background:var(--accent);color:#fff;transform:translate(2px,-2px);}

  /* ====== Timeline / 履历 ====== */
  .timeline-wrap{display:grid;grid-template-columns:300px 1fr;gap:80px;align-items:start;}
  .timeline-side{position:sticky;top:120px;padding:28px;border-radius:16px;background:var(--bg-secondary);border:1px solid var(--border-color);}
  .timeline-side .section-eyebrow{margin-bottom:14px;}
  .timeline-side h3{font-size:26px;font-weight:700;margin-bottom:14px;letter-spacing:-.5px;line-height:1.35;}
  .timeline-side p{font-size:14px;color:var(--text-secondary);line-height:1.8;margin-bottom:24px;}
  .timeline-side .download{
    margin-top:0;display:inline-flex;align-items:center;gap:8px;
    padding:12px 20px;border-radius:12px;font-size:13px;font-weight:500;
    background:rgba(255,255,255,.04);border:1px solid var(--border-color);
    transition:all .3s ease;
  }
  .timeline-side .download:hover{background:rgba(90,170,201,.12);border-color:rgba(90,170,201,.5);color:var(--accent);transform:translateY(-1px);}

  .timeline{position:relative;padding-left:50px;}
  .timeline::before{
    content:"";position:absolute;left:17px;top:12px;bottom:12px;width:2px;
    background:linear-gradient(180deg,var(--accent),rgba(90,170,201,.1),rgba(90,170,201,.03));
    border-radius:1px;
  }
  .tl-item{position:relative;padding-bottom:36px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-item-inner{
    padding:24px;border-radius:14px;background:var(--bg-secondary);
    border:1px solid var(--border-color);transition:all .3s ease;
  }
  .tl-item:hover .tl-item-inner{border-color:rgba(90,170,201,.3);background:rgba(90,170,201,.03);transform:translateX(4px);}
  .tl-dot{
    position:absolute;left:-41px;top:30px;
    width:24px;height:24px;border-radius:50%;
    background:var(--bg-primary);
    border:2px solid var(--accent);
    display:grid;place-items:center;
    transition:all .3s ease;
    z-index:1;
  }
  .tl-dot::before{
    content:"";width:8px;height:8px;border-radius:50%;
    background:var(--accent);box-shadow:0 0 12px var(--accent);
  }
  .tl-item.now .tl-dot{box-shadow:0 0 0 8px rgba(90,170,201,.15);width:28px;height:28px;}
  .tl-item.now .tl-dot::before{animation:breath 2s ease-in-out infinite;width:10px;height:10px;}
  .tl-item.now .tl-item-inner{border-color:rgba(90,170,201,.4);background:rgba(90,170,201,.04);}
  .tl-time{font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--accent);letter-spacing:1.2px;margin-bottom:10px;display:flex;align-items:center;gap:10px;font-weight:500;}
  .tl-time .badge-now{padding:3px 10px;font-size:10px;background:rgba(34,197,94,.12);color:var(--status-green);border-radius:6px;border:1px solid rgba(34,197,94,.3);font-weight:600;}
  .tl-title{font-size:18px;font-weight:600;margin-bottom:8px;letter-spacing:-.3px;}
  .tl-org{font-size:13px;color:var(--text-tertiary);margin-bottom:16px;display:flex;align-items:center;gap:10px;}
  .tl-org svg{color:var(--accent);width:15px;height:15px;}
  .tl-desc{font-size:14px;color:var(--text-secondary);line-height:1.8;}
  .tl-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px;}
  .tl-tags .skill-chip{font-size:11.5px;padding:5px 12px;border-radius:8px;}

  /* ====== Testimonials ====== */
  .quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .quote{
    background:var(--bg-secondary);border:1px solid var(--border-color);
    border-radius:var(--radius);padding:28px;
    display:flex;flex-direction:column;gap:18px;
    transition:border-color .3s ease;position:relative;
  }
  .quote::before{
    content:"\201C";position:absolute;top:14px;right:24px;
    font-size:72px;line-height:1;color:rgba(90,170,201,.18);font-family:Georgia;
  }
  .quote p{font-size:14px;color:var(--text-secondary);line-height:1.7;position:relative;}
  .quote-foot{display:flex;align-items:center;gap:12px;padding-top:18px;border-top:1px solid var(--border-color);}
  .avatar{
    width:40px;height:40px;border-radius:50%;
    background:linear-gradient(135deg,var(--accent),var(--accent-3));
    display:grid;place-items:center;font-weight:600;color:#fff;
  }
  .quote-meta .name{font-size:14px;font-weight:600;}
  .quote-meta .role{font-size:12px;color:var(--text-tertiary);margin-top:2px;}

  /* ====== Blog ====== */
  .blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .blog-card{
    background:var(--bg-secondary);border:1px solid var(--border-color);
    border-radius:var(--radius);padding:26px;
    display:flex;flex-direction:column;gap:14px;
    position:relative;overflow:hidden;
    transition:border-color .3s ease, transform .3s ease;
    cursor:pointer;text-decoration:none;color:inherit;
  }
  .blog-card::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
    background:linear-gradient(180deg,var(--accent),var(--accent-3));
    opacity:0;transition:opacity .3s ease;
  }
  .blog-card:hover{transform:translateY(-4px);border-color:var(--border-strong);}
  .blog-card:hover::before{opacity:1;}
  .blog-card code{font-family:'JetBrains Mono',monospace;font-size:12.5px;background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;color:var(--accent);}
  .blog-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-tertiary);}
  .blog-cat{padding:3px 8px;border-radius:5px;font-size:11px;background:rgba(90,170,201,.1);color:var(--accent);font-weight:500;}
  .blog-cat.b{background:rgba(167,139,250,.1);color:var(--accent-3);}
  .blog-cat.c{background:rgba(34,197,94,.1);color:var(--status-green);}
  .blog-title{font-size:17px;font-weight:600;line-height:1.4;}
  .blog-excerpt{font-size:13.5px;color:var(--text-secondary);line-height:1.65;flex:1;}
  .blog-foot{display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px solid var(--border-color);font-size:12px;color:var(--text-tertiary);}
  .blog-foot span:last-child{color:var(--accent);}

  /* ====== FAQ ====== */
  .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .faq{
    background:var(--bg-secondary);border:1px solid var(--border-color);
    border-radius:var(--radius);overflow:hidden;
    transition:border-color .3s ease;
  }
  .faq summary{
    padding:22px 26px;font-size:15.5px;font-weight:600;
    list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px;
  }
  .faq summary::-webkit-details-marker{display:none;}
  .faq summary::after{
    content:"+";font-size:24px;color:var(--accent);font-weight:300;
    transition:transform .3s ease;
  }
  .faq[open] summary::after{transform:rotate(45deg);}
  .faq[open]{border-color:rgba(90,170,201,.3);}
  .faq-body{padding:0 26px 24px;font-size:14px;color:var(--text-secondary);line-height:1.75;}

  /* ====== CTA ====== */
  .cta{
    background:
      radial-gradient(800px 400px at 20% 50%, rgba(90,170,201,.15), transparent 60%),
      radial-gradient(600px 300px at 80% 50%, rgba(167,139,250,.1), transparent 60%),
      var(--bg-secondary);
    border:1px solid var(--border-color);
    border-radius:var(--radius-xl);
    padding:72px 56px;text-align:center;
    position:relative;overflow:hidden;
  }
  .cta::before,.cta::after{content:"";position:absolute;border-radius:50%;filter:blur(80px);}
  .cta::before{width:240px;height:240px;background:var(--accent);top:-80px;left:-40px;opacity:.25;}
  .cta::after{width:240px;height:240px;background:var(--accent-3);bottom:-80px;right:-40px;opacity:.2;}
  .cta-eyebrow{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:1.5px;color:var(--accent);text-transform:uppercase;margin-bottom:14px;}
  .cta-title{font-size:46px;font-weight:700;letter-spacing:-1px;line-height:1.1;margin-bottom:18px;position:relative;}
  .cta-desc{font-size:16px;color:var(--text-secondary);max-width:560px;margin:0 auto 36px;position:relative;}
  .cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;position:relative;}

  /* ====== Footer ====== */
  footer{padding:60px 0 40px;border-top:1px solid var(--border-color);margin-top:60px;}
  .foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px;}
  .foot-brand p{font-size:13.5px;color:var(--text-secondary);margin-top:16px;line-height:1.7;max-width:300px;}
  .foot-title{font-size:13px;font-weight:600;margin-bottom:18px;text-transform:uppercase;letter-spacing:.8px;}
  .foot-links{display:flex;flex-direction:column;gap:10px;}
  .foot-links a{font-size:13.5px;color:var(--text-secondary);transition:color .2s ease;}
  .foot-links a:hover{color:var(--accent);}
  .foot-bottom{padding-top:32px;border-top:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--text-tertiary);}
  .social{display:flex;gap:10px;}
  .social a{
    width:36px;height:36px;border-radius:9px;
    background:rgba(255,255,255,.04);border:1px solid var(--border-color);
    display:grid;place-items:center;color:var(--text-secondary);transition:all .25s ease;
  }
  .social a:hover{color:var(--accent);border-color:var(--accent);background:rgba(90,170,201,.1);}

  /* ====== Tech / AI Toolchain (新板块) ====== */
  .tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px;}
  .tech-card{
    background:var(--bg-glass);border:1px solid var(--border-color);border-radius:18px;
    padding:28px 26px;backdrop-filter:blur(12px);transition:transform .35s ease,border-color .35s ease;
    position:relative;overflow:hidden;
  }
  .tech-card::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 120% at 100% 0%,rgba(90,170,201,.10),transparent 60%);opacity:0;transition:opacity .35s ease;}
  .tech-card:hover{transform:translateY(-4px);border-color:rgba(90,170,201,.35);}
  .tech-card:hover::before{opacity:1;}
  .tech-card .tc-ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(90,170,201,.12);color:var(--accent);margin-bottom:16px;}
  .tech-card h3{font-size:17px;font-weight:600;margin-bottom:6px;}
  .tech-card .tc-desc{color:var(--text-secondary);font-size:13.5px;line-height:1.7;margin-bottom:16px;}

  .ai-band{margin-top:46px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
  .ai-item{
    background:linear-gradient(160deg,rgba(90,170,201,.10),rgba(22,28,38,.5));
    border:1px solid var(--border-color);border-radius:16px;padding:22px 20px;
    transition:transform .3s ease,border-color .3s ease;
  }
  .ai-item:hover{transform:translateY(-3px);border-color:rgba(90,170,201,.4);}
  .ai-item .ai-emoji{font-size:24px;margin-bottom:10px;}
  .ai-item h4{font-size:15px;font-weight:600;margin-bottom:6px;}
  .ai-item p{font-size:12.5px;color:var(--text-secondary);line-height:1.65;}

  .notes-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:34px;}
  .note{
    background:var(--bg-glass);border:1px solid var(--border-color);border-left:3px solid var(--accent);
    border-radius:14px;padding:22px 24px;backdrop-filter:blur(10px);
  }
  .note .n-tag{display:inline-block;font-size:11px;letter-spacing:.5px;color:var(--accent);border:1px solid rgba(90,170,201,.3);border-radius:999px;padding:3px 10px;margin-bottom:12px;}
  .note .n-q{font-size:15px;font-weight:600;margin-bottom:8px;line-height:1.5;}
  .note .n-a{font-size:13.5px;color:var(--text-secondary);line-height:1.75;}
  .note .n-a b{color:var(--text-primary);font-weight:600;}

  /* ====== Project Detail Pages ====== */
  .proj-bar{
    position:sticky;top:0;z-index:100;
    backdrop-filter:blur(20px) saturate(180%);
    background:rgba(10,13,18,.7);
    border-bottom:1px solid var(--border-color);
  }
  .proj-bar .nav-inner{height:62px;}
  .back-link{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-secondary);transition:color .25s ease;}
  .back-link:hover{color:var(--accent);}
  .back-link svg{transition:transform .25s ease;}
  .back-link:hover svg{transform:translateX(-4px);}

  .proj-hero{padding:120px 0 64px;position:relative;}
  .proj-eyebrow{font-size:13px;letter-spacing:3px;text-transform:uppercase;color:var(--accent);margin-bottom:18px;display:flex;align-items:center;gap:10px;}
  .proj-eyebrow::before{content:"";width:30px;height:1px;background:var(--accent);display:inline-block;}
  .proj-title{font-size:clamp(34px,5vw,58px);font-weight:800;line-height:1.08;letter-spacing:-1px;margin-bottom:20px;}
  .proj-title .grad{background:linear-gradient(120deg,var(--accent-2),var(--accent-3));-webkit-background-clip:text;background-clip:text;color:transparent;}
  .proj-sub{font-size:17px;color:var(--text-secondary);max-width:720px;line-height:1.8;margin-bottom:28px;}
  .proj-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:8px;}
  .pbadge{font-size:12.5px;padding:7px 14px;border-radius:999px;border:1px solid var(--border-strong);background:var(--bg-glass);color:var(--text-secondary);}
  .pbadge.hot{color:var(--accent-2);border-color:rgba(125,211,252,.4);}

  .proj-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:56px 0 12px;}
  .pm-cell{background:var(--bg-glass);border:1px solid var(--border-color);border-radius:16px;padding:26px 22px;backdrop-filter:blur(10px);transition:transform .35s ease,border-color .35s ease;}
  .pm-cell:hover{transform:translateY(-4px);border-color:var(--accent-glow);}
  .pm-num{font-size:38px;font-weight:800;background:linear-gradient(120deg,var(--accent-2),var(--accent-3));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1;}
  .pm-num .u,.pm-num .unit{font-size:18px;margin-left:3px;-webkit-text-fill-color:var(--text-secondary);}
  .pm-lab{font-size:13px;color:var(--text-secondary);margin-top:10px;}

  .psec{padding:64px 0;border-top:1px solid var(--border-color);}
  .psec-head{display:flex;align-items:baseline;gap:14px;margin-bottom:38px;}
  .psec-no{font-size:14px;font-weight:700;color:var(--accent);font-family:'JetBrains Mono',monospace;}
  .psec-title{font-size:28px;font-weight:700;letter-spacing:-.5px;}
  .psec-desc{font-size:15px;color:var(--text-secondary);max-width:820px;line-height:1.85;}

  .p-grid{display:grid;gap:20px;}
  .p-grid.two{grid-template-columns:1fr 1fr;}
  .p-grid.three{grid-template-columns:repeat(3,1fr);}
  .pcard{background:var(--bg-glass);border:1px solid var(--border-color);border-radius:16px;padding:26px;transition:transform .35s ease,border-color .35s ease;}
  .pcard:hover{transform:translateY(-4px);border-color:var(--border-strong);}
  .pcard h4{font-size:17px;font-weight:650;margin-bottom:12px;display:flex;align-items:center;gap:10px;}
  .pcard h4 .ic{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:rgba(90,170,201,.14);color:var(--accent);font-size:15px;flex:0 0 auto;}
  .pcard p{font-size:14px;color:var(--text-secondary);line-height:1.8;}
  .pcard p+p{margin-top:12px;}
  .pcard code{font-family:'JetBrains Mono',monospace;font-size:12px;background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;color:var(--accent);}
  .pcard ul{list-style:none;display:flex;flex-direction:column;gap:9px;}
  .pcard li{font-size:13.5px;color:var(--text-secondary);line-height:1.7;padding-left:20px;position:relative;}
  .pcard li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.8;}

  .tech-cloud{display:flex;flex-wrap:wrap;gap:12px;}
  .tchip{font-size:14px;padding:10px 18px;border-radius:12px;background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-primary);transition:all .3s ease;}
  .tchip:hover{background:rgba(90,170,201,.12);border-color:var(--accent-glow);transform:translateY(-2px);}
  .tchip small{color:var(--text-tertiary);margin-left:8px;font-size:11.5px;}

  .challenge{border-left:3px solid var(--accent-warm);background:linear-gradient(90deg,rgba(245,169,127,.06),transparent);border-radius:0 14px 14px 0;padding:22px 26px;margin-bottom:18px;}
  .challenge .c-top{display:flex;align-items:center;gap:10px;margin-bottom:10px;flex-wrap:wrap;}
  .challenge .c-tag{font-size:11px;letter-spacing:.5px;padding:3px 10px;border-radius:999px;background:rgba(245,169,127,.16);color:var(--accent-warm);}
  .challenge h4{font-size:16px;font-weight:650;margin:0;}
  .challenge p{font-size:13.5px;color:var(--text-secondary);line-height:1.8;margin:0;}
  .challenge .c-fix{margin-top:10px;font-size:13.5px;color:var(--text-primary);line-height:1.8;}
  .challenge .c-fix b{color:var(--accent-2);}

  .stack-role{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;}
  .rr-list{display:flex;flex-direction:column;gap:14px;}
  .rr-item{display:flex;gap:14px;align-items:flex-start;background:var(--bg-glass);border:1px solid var(--border-color);border-radius:14px;padding:18px 20px;}
  .rr-item .rr-ic{width:38px;height:38px;border-radius:10px;flex:0 0 auto;display:grid;place-items:center;font-size:18px;background:linear-gradient(135deg,var(--accent),var(--accent-3));}
  .rr-item .rr-t{font-size:14.5px;font-weight:600;margin-bottom:3px;}
  .rr-item .rr-d{font-size:13px;color:var(--text-secondary);line-height:1.6;}

  .proj-cta{text-align:center;padding:80px 0 100px;}
  .proj-cta h3{font-size:30px;font-weight:800;margin-bottom:14px;}
  .proj-cta p{color:var(--text-secondary);margin-bottom:28px;font-size:15px;}
  .btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
  .btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:12px;font-size:14.5px;font-weight:600;transition:all .3s ease;}
  .btn.primary{background:linear-gradient(135deg,var(--accent),#4a8fa8);color:#fff;box-shadow:0 8px 24px var(--accent-glow);}
  .btn.primary:hover{transform:translateY(-3px);box-shadow:0 14px 34px var(--accent-glow);}
  .btn.ghost{border:1px solid var(--border-strong);color:var(--text-primary);}
  .btn.ghost:hover{border-color:var(--accent);color:var(--accent);}

  .foot-mini{padding:36px 0;border-top:1px solid var(--border-color);text-align:center;color:var(--text-tertiary);font-size:13px;}

  /* ====== Blog Modal ====== */
  .blog-modal{
    position:fixed;inset:0;z-index:9999;background:rgba(10,13,18,.85);backdrop-filter:blur(16px);
    display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;pointer-events:none;
    transition:opacity .35s ease;
  }
  .blog-modal.open{opacity:1;pointer-events:auto;}
  .blog-modal-content{
    width:100%;max-width:860px;max-height:85vh;background:var(--bg-secondary);
    border:1px solid var(--border-color);border-radius:20px;overflow:hidden;
    transform:scale(.95) translateY(20px);transition:transform .35s ease;
  }
  .blog-modal.open .blog-modal-content{transform:scale(1) translateY(0);}
  .blog-modal-header{
    padding:24px 32px;border-bottom:1px solid var(--border-color);
    display:flex;align-items:center;justify-content:space-between;
  }
  .blog-modal-close{
    width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,.04);
    display:grid;place-items:center;color:var(--text-secondary);transition:all .25s ease;
  }
  .blog-modal-close:hover{background:rgba(239,68,68,.15);color:#ef4444;}
  .blog-modal-body{padding:32px;overflow-y:auto;max-height:calc(85vh - 140px);}
  .blog-modal-title{font-size:26px;font-weight:700;margin-bottom:16px;line-height:1.4;}
  .blog-modal-meta{display:flex;gap:16px;font-size:13px;color:var(--text-tertiary);margin-bottom:24px;}
  .blog-modal-meta .cat{padding:4px 10px;border-radius:6px;background:rgba(90,170,201,.1);color:var(--accent);font-size:12px;}
  .blog-modal-excerpt{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--border-color);}
  .blog-modal-content-body{font-size:15px;color:var(--text-primary);line-height:1.9;}
  .blog-modal-content-body h3{font-size:18px;font-weight:600;margin:28px 0 14px;color:var(--accent);}
  .blog-modal-content-body p{margin-bottom:16px;}
  .blog-modal-content-body ul{margin:16px 0;padding-left:24px;list-style:none;}
  .blog-modal-content-body li{padding-left:20px;position:relative;margin-bottom:10px;color:var(--text-secondary);}
  .blog-modal-content-body li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--accent);}

  /* ====== Responsive ====== */
  @media (max-width:1024px){
    .tech-grid,.ai-band{grid-template-columns:1fr 1fr;}
    .notes-grid{grid-template-columns:1fr;}
    .hero-grid{grid-template-columns:1fr;gap:48px;}
    .hero-title{font-size:46px;}
    .works-grid > *{grid-column:span 12 !important;}
    .blog-grid,.quotes{grid-template-columns:1fr;}
    .timeline-wrap{grid-template-columns:1fr;gap:32px;}
    .timeline-side{position:relative;top:0;padding:20px;margin-bottom:16px;}
    .timeline{padding-left:32px;}
    .tl-dot{left:-25px;top:24px;width:20px;height:20px;}
    .tl-item-inner{padding:18px;}
    .numbers{grid-template-columns:1fr 1fr;}
    .num-cell:nth-child(2){border-right:none;}
    .num-cell:nth-child(1),.num-cell:nth-child(2){border-bottom:1px solid var(--border-color);}
    .about-grid,.faq-grid{grid-template-columns:1fr;}
    .foot-grid{grid-template-columns:1fr 1fr;}
    .proj-metrics{grid-template-columns:1fr 1fr;}
    .p-grid.two,.p-grid.three,.stack-role{grid-template-columns:1fr;}
    .blog-modal-content{max-width:100%;}
    .blog-modal-body{padding:20px;}
    .bg-video{display:none;}
    .hero-video-overlay{
      background:
        radial-gradient(120% 100% at 50% 30%, rgba(10,13,18,.10) 0%, rgba(10,13,18,.52) 82%),
        linear-gradient(180deg, rgba(10,13,18,.42) 0%, rgba(10,13,18,.14) 42%, rgba(10,13,18,.72) 100%);
    }
  }
  @media (max-width:768px){
    .cursor-dot,.cursor-ring{display:none !important;}
    .wrap{padding:0 20px;}
    .nav-inner{gap:16px;}
    .nav-links{display:none;}
    .hero-title{font-size:34px;line-height:1.3;}
    .hero-sub{font-size:15px;}
    .hero-meta{flex-direction:column;gap:12px;}
    .hero-meta > div{font-size:13px;}
    .section-eyebrow{font-size:12px;}
    .section-title{font-size:28px;}
    .tech-grid,.ai-band{grid-template-columns:1fr;}
    .about-card,.work-card,.blog-card,.note{padding:20px;}
    .work-title{font-size:18px;}
    .work-desc{font-size:14px;}
    .numbers{grid-template-columns:1fr;}
    .num-cell:nth-child(1),.num-cell:nth-child(2){border-bottom:none;}
    .num-cell:nth-child(3){border-right:none;}
    .num-value{font-size:36px;}
    .timeline-side{padding:16px;}
    .timeline{padding-left:24px;}
    .tl-dot{left:-19px;top:20px;width:16px;height:16px;}
    .tl-item-inner{padding:16px;}
    .tl-title{font-size:17px;}
    .tl-company{font-size:13px;}
    .tl-desc{font-size:14px;}
    .faq{padding:16px;}
    .faq summary{font-size:15px;}
    .faq-body{font-size:14px;}
    .foot-grid{grid-template-columns:1fr;gap:24px;}
    .foot-brand p{font-size:14px;}
    .download{padding:12px 20px;font-size:14px;}
    .proj-bar{padding:12px 20px;}
    .back-link{font-size:13px;}
    .p-title{font-size:26px;}
    .p-sub{font-size:14px;}
    .pcard{padding:20px;}
    .psec-title{font-size:20px;}
    .tchip{font-size:12px;padding:4px 10px;}
    .rr-item{padding:14px;}
    .rr-t{font-size:15px;}
    .rr-d{font-size:14px;}
    .proj-metrics{grid-template-columns:1fr;}
    .blog-modal-header{padding:16px 20px;}
    .blog-modal-title{font-size:20px;}
    .blog-modal-body{padding:16px 20px;}
    .blog-modal-excerpt{font-size:14px;}
    .contact-btn{padding:14px 20px;font-size:15px;}
    .contact-btn svg{width:15px;height:15px;}
    .click-particle{display:none !important;}
    [data-tilt]{transform:none !important;}
    [data-hover]{cursor:default;}
  }

  /* ====== 视频背景模式下的增强玻璃效果 ====== */
  body.bg-mode-pixel .about-card,
  body.bg-mode-glow .about-card{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.82);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .tech-card,
  body.bg-mode-glow .tech-card{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.82);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .work-card,
  body.bg-mode-glow .work-card{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.82);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .blog-card,
  body.bg-mode-glow .blog-card{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.82);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .faq,
  body.bg-mode-glow .faq{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.82);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .timeline-side,
  body.bg-mode-glow .timeline-side{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.82);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .timeline-item,
  body.bg-mode-glow .timeline-item{
    backdrop-filter:blur(20px) saturate(160%);
    background:rgba(15,20,28,.75);
    border-color:rgba(255,255,255,.12);
  }
  body.bg-mode-pixel .note,
  body.bg-mode-glow .note{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.82);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .code-card,
  body.bg-mode-glow .code-card{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.88);
    border-color:rgba(255,255,255,.14);
  }

  /* ====== 二级页面 - 视频背景模式下的玻璃效果 ====== */
  body.bg-mode-pixel .proj-bar,
  body.bg-mode-glow .proj-bar{
    backdrop-filter:blur(30px) saturate(200%);
    background:rgba(10,13,18,.85);
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  body.bg-mode-pixel .pcard,
  body.bg-mode-glow .pcard{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.85);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .tech-cloud,
  body.bg-mode-glow .tech-cloud{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.82);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .rr-list,
  body.bg-mode-glow .rr-list{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.82);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .rr-item,
  body.bg-mode-glow .rr-item{
    backdrop-filter:blur(20px) saturate(160%);
    background:rgba(15,20,28,.7);
    border-color:rgba(255,255,255,.1);
  }
  body.bg-mode-pixel .challenge,
  body.bg-mode-glow .challenge{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.85);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .pm-cell,
  body.bg-mode-glow .pm-cell{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.82);
    border-color:rgba(255,255,255,.14);
  }
  body.bg-mode-pixel .psec-head,
  body.bg-mode-glow .psec-head{
    backdrop-filter:blur(24px) saturate(180%);
    background:rgba(15,20,28,.82);
    border-color:rgba(255,255,255,.14);
  }

  /* ====== 点击颗粒交互效果 ====== */
  .click-particle{
    position:fixed;
    width:var(--size,4px);
    height:var(--size,4px);
    border-radius:50%;
    background:hsl(var(--hue,195),80%,65%);
    box-shadow:0 0 8px hsl(var(--hue,195),80%,65%),0 0 16px hsl(var(--hue,195),60%,50%);
    pointer-events:none;
    z-index:9999;
    transform:translate(-50%,-50%) scale(0);
    animation:particle-fly var(--duration,.8s) var(--delay,0s) ease-out forwards;
  }

  @keyframes particle-fly{
    0%{
      transform:translate(-50%,-50%) scale(0);
      opacity:1;
    }
    20%{
      transform:translate(calc(-50% + var(--tx)),calc(-50% + var(--ty) * 0.3)) scale(1);
      opacity:1;
    }
    100%{
      transform:translate(calc(-50% + var(--tx)),calc(-50% + var(--ty))) scale(0);
      opacity:0;
    }
  }