:root{
  --bg:#0e2a52;
  --bg-2:#0a224a;
  --paper:#f0ead6;
  --ink:#f0ead6;
  --ink-2:#e8e0c8;
  --muted:#8aa0c4;
  --rule:#1a3a6e;
  --accent:#f6c843;
  --primary:#f6c843;
}
/* pro6 — Blueprint 工程蓝图 / 普鲁士蓝 + 米白 + 等宽字 + 网格线 */
*{box-sizing:border-box;}
body{background:#0e2a52;color:#e8e0c8;font-family:"IBM Plex Mono","JetBrains Mono","SF Mono",monospace;-webkit-font-smoothing:antialiased;line-height:1.7;}
::selection{background:#f6c843;color:#fff;}
::-webkit-scrollbar{width:10px;}
::-webkit-scrollbar-track{background:#0a224a;}
::-webkit-scrollbar-thumb{background:#f0ead6;}

.display{font-family:"IBM Plex Mono","JetBrains Mono",monospace;font-weight:700;letter-spacing:.02em;line-height:1.04;}
.display-bold{font-family:"IBM Plex Mono","JetBrains Mono",monospace;font-weight:700;letter-spacing:-.02em;line-height:1.06;}
.label{font-family:"IBM Plex Mono","JetBrains Mono",monospace;font-weight:600;font-size:.72rem;letter-spacing:.28em;text-transform:uppercase;color:#f0ead6;}
.label-muted{font-family:"IBM Plex Mono","JetBrains Mono",monospace;font-weight:500;font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:#8aa0c4;}
.no-num{font-family:"IBM Plex Mono","JetBrains Mono",monospace;font-weight:700;font-size:.7rem;letter-spacing:.3em;color:#f6c843;}

.t-ink{color:#f0ead6;} .t-accent{color:#f6c843;} .t-muted{color:#8aa0c4;}
.bg-paper{background:#f0ead6;} .bg-ink{background:#f0ead6;color:#f0ead6;}
.dot{display:inline-block;width:.55rem;height:.55rem;background:#f6c843;}

.rule{height:1px;background:#1a3a6e;}
.rule-ink{height:2px;background:#f0ead6;}

.card{background:#f0ead6;background:rgba(240,234,214,.04);border:1px solid #1a3a6e;color:#e8e0c8;transition:transform .25s ease,box-shadow .25s ease;border-radius:0;}
.card:hover{background:rgba(240,234,214,.07);border-color:#f6c843;}
.card-bare{background:transparent;}

.work-thumb{display:block;background:#0a224a;overflow:hidden;}
.work-thumb img{display:block;width:100%;height:auto;transition:transform .6s ease,filter .4s ease;filter:saturate(0.85) contrast(1.05);}
.work-thumb:hover img{transform:scale(1.04);filter:saturate(1) contrast(1.1);}

.btn{display:inline-flex;align-items:center;gap:.55rem;padding:.9rem 1.7rem;font-weight:600;letter-spacing:.08em;font-size:.78rem;text-transform:uppercase;background:#f0ead6;color:#f0ead6;border:1px solid #f0ead6;border-radius:0;transition:.18s;}
.btn:hover{background:#f6c843;border-color:#f6c843;color:#fff;transform:translateY(-1px);}
.btn-ghost{display:inline-flex;align-items:center;gap:.55rem;padding:.9rem 1.7rem;font-weight:600;letter-spacing:.08em;font-size:.78rem;text-transform:uppercase;background:transparent;color:#f0ead6;border:1px solid #f0ead6;border-radius:0;transition:.18s;}
.btn-ghost:hover{background:#f0ead6;color:#f0ead6;}

.chip{display:inline-flex;font-family:"IBM Plex Mono","JetBrains Mono",monospace;font-weight:600;font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;background:transparent;color:#e8e0c8;border:1px solid #1a3a6e;padding:.3rem .7rem;}

.cat-tab{font-family:"IBM Plex Mono","JetBrains Mono",monospace;font-weight:600;font-size:.76rem;letter-spacing:.08em;background:transparent;color:#8aa0c4;border:none;padding:.5rem 0;position:relative;transition:.18s;}
.cat-tab:hover{color:#f0ead6;}
.cat-tab.active{color:#f0ead6;}
.cat-tab.active:after{content:'';position:absolute;left:0;right:0;bottom:-4px;height:2px;background:#f6c843;}

.nav-link{font-family:"IBM Plex Mono","JetBrains Mono",monospace;font-weight:600;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:#e8e0c8;padding:.5rem .9rem;transition:color .18s;}
.nav-link:hover,.nav-link.active{color:#f6c843;}
.nav{display:flex;}
@media(max-width:1023px){
  .nav{position:fixed;top:0;right:0;bottom:0;width:80%;max-width:320px;flex-direction:column;align-items:stretch;background:#f0ead6;background:#0a224a;border-left:1px solid #1a3a6e;padding:6rem 1.5rem 2rem;transform:translateX(101%);transition:transform .25s;z-index:60;overflow-y:auto;}
  .nav.active{transform:translateX(0);}
  .menu-overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);opacity:0;visibility:hidden;transition:opacity .25s;z-index:55;}
  .menu-overlay.active{opacity:1;visibility:visible;}
  body.menu-open{overflow:hidden;}
  .nav-link{padding:1rem 1.1rem;border-bottom:1px solid #1a3a6e;}
}

.skill-bar{height:1px;background:#1a3a6e;position:relative;}
.skill-bar > span{position:absolute;inset:0 auto 0 0;background:#f6c843;height:1px;}

.timeline{position:relative;padding-left:32px;}
.timeline:before{content:'';position:absolute;left:0;top:6px;bottom:6px;width:1px;background:#f0ead6;}
.timeline-item{position:relative;}
.timeline-item:before{content:'';position:absolute;left:-37px;top:13px;width:14px;height:1px;background:#f6c843;}

.faq-answer{max-height:0;overflow:hidden;opacity:0;transition:max-height .3s,opacity .3s;}
.faq-item.active .faq-icon{transform:rotate(45deg);}
.faq-icon{transition:transform .2s;}

.back-to-top{opacity:0;visibility:hidden;transition:opacity .25s;}
.back-to-top.visible{opacity:1;visibility:visible;}


/* Blueprint 网格背景 + 蓝图标记 */
body{background-image:linear-gradient(0deg,transparent 0 31px,rgba(240,234,214,.05) 31px 32px),linear-gradient(90deg,transparent 0 31px,rgba(240,234,214,.05) 31px 32px);background-size:32px 32px;}
.bg-grid{background-image:linear-gradient(0deg,transparent 0 31px,rgba(240,234,214,.05) 31px 32px),linear-gradient(90deg,transparent 0 31px,rgba(240,234,214,.05) 31px 32px);background-size:32px 32px;}
.blueprint-marker:before{content:"⊕ ";color:#f6c843;font-family:'IBM Plex Mono',monospace;}






@media print{header,footer,.no-print{display:none;}}