:root{
  --bg:#070b14;
  --bg-soft:#0b1120;
  --panel:rgba(255,255,255,.035);
  --panel-brd:rgba(255,255,255,.09);
  --text:#e8edf7;
  --muted:#93a1bd;
  --accent:#38e0c8;
  --accent-2:#5b8cff;
  --accent-3:#a06bff;
  --radius:18px;
  --maxw:1160px;
  --font:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
::selection{background:rgba(56,224,200,.28)}

/* background decor */
.bg-grid{
  position:fixed;inset:0;z-index:-2;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
}
.bg-glow{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(600px 420px at 12% 8%,rgba(91,140,255,.22),transparent 60%),
    radial-gradient(560px 420px at 88% 22%,rgba(56,224,200,.16),transparent 62%),
    radial-gradient(700px 520px at 50% 100%,rgba(160,107,255,.14),transparent 65%);
}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* NAV */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .3s,border-color .3s,backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--panel-brd);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:16px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.3px}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#04121a;font-weight:800;font-size:17px;
  box-shadow:0 6px 20px rgba(56,224,200,.28);
}
.brand-text{font-size:16px}
.brand-text .dot{color:var(--accent)}
.nav-links{display:flex;gap:6px}
.nav-links a{
  padding:8px 14px;border-radius:999px;font-size:14px;color:var(--muted);
  transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* HERO */
.hero{position:relative;padding:150px 0 90px;min-height:100vh;display:flex;align-items:center}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;width:100%}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;color:var(--accent);
  background:rgba(56,224,200,.08);border:1px solid rgba(56,224,200,.25);
  padding:6px 14px;border-radius:999px;margin-bottom:22px;
}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(56,224,200,.6);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 10px rgba(56,224,200,0)}100%{box-shadow:0 0 0 0 rgba(56,224,200,0)}}
.hero h1{font-size:clamp(34px,5vw,58px);line-height:1.12;letter-spacing:-1px;font-weight:800;margin-bottom:16px}
.grad{background:linear-gradient(100deg,var(--accent),var(--accent-2) 55%,var(--accent-3));-webkit-background-clip:text;background-clip:text;color:transparent}
.role{font-size:clamp(16px,2vw,20px);color:var(--muted);margin-bottom:20px;font-weight:500}
.typed{color:var(--text);font-weight:700}
.caret{color:var(--accent);font-weight:400;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.lede{color:var(--muted);max-width:560px;margin-bottom:30px;font-size:15.5px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:42px}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:12px;
  font-weight:600;font-size:15px;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s;
}
.btn.primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#04121a;
  box-shadow:0 10px 30px rgba(56,224,200,.25);
}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(56,224,200,.35)}
.btn.ghost{border:1px solid var(--panel-brd);color:var(--text);background:rgba(255,255,255,.03)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.hero-stats{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;max-width:560px}
.hero-stats li{display:flex;flex-direction:column;gap:2px}
.hero-stats strong{font-size:clamp(22px,3vw,30px);font-weight:800;color:var(--text);font-variant-numeric:tabular-nums}
.hero-stats span{font-size:12.5px;color:var(--muted)}

/* terminal card */
.hero-card{position:relative}
.terminal{
  background:linear-gradient(180deg,rgba(18,26,44,.9),rgba(10,15,27,.95));
  border:1px solid var(--panel-brd);border-radius:var(--radius);
  overflow:hidden;box-shadow:0 30px 70px rgba(0,0,0,.5);
  animation:float 6s ease-in-out infinite;
}
@keyframes float{50%{transform:translateY(-12px)}}
.term-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid var(--panel-brd);background:rgba(255,255,255,.02)}
.term-bar i{width:11px;height:11px;border-radius:50%}
.term-bar i:nth-child(1){background:#ff5f57}
.term-bar i:nth-child(2){background:#febc2e}
.term-bar i:nth-child(3){background:#28c840}
.term-bar span{margin-left:8px;font-family:var(--mono);font-size:12px;color:var(--muted)}
.term-body{padding:22px;font-family:var(--mono);font-size:13.5px;line-height:1.85;overflow-x:auto}
.c-key{color:#c792ea}.c-str{color:#a5e6a5}.c-num{color:#f78c6c}.c-bool{color:#82aaff}.c-com{color:#5a6b8c;font-style:italic}

.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);width:26px;height:42px;border:2px solid var(--panel-brd);border-radius:14px;display:grid;place-items:center}
.scroll-hint span{width:4px;height:8px;border-radius:2px;background:var(--accent);animation:scrolldot 1.6s infinite}
@keyframes scrolldot{0%{transform:translateY(-6px);opacity:0}40%{opacity:1}100%{transform:translateY(8px);opacity:0}}

/* SECTIONS */
.section{padding:100px 0;position:relative}
.section.alt{background:linear-gradient(180deg,rgba(255,255,255,.018),transparent)}
.section-head{margin-bottom:48px}
.kicker{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:1px}
.section-head h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;letter-spacing:-.6px;margin-top:10px}
.contact-sub{color:var(--muted);margin-top:12px;max-width:520px}

/* ABOUT */
.about-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;align-items:start}
.about-text p{color:var(--muted);margin-bottom:16px;font-size:15.5px}
.about-facts{list-style:none;margin-top:26px;border-top:1px solid var(--panel-brd)}
.about-facts li{display:flex;gap:16px;padding:13px 0;border-bottom:1px solid var(--panel-brd);font-size:14.5px}
.about-facts span{color:var(--accent);min-width:52px;font-family:var(--mono);font-size:13px}
.about-side{display:flex;flex-direction:column;gap:20px}
.info-card{background:var(--panel);border:1px solid var(--panel-brd);border-radius:var(--radius);padding:24px}
.info-card h3{font-size:15px;margin-bottom:16px;color:var(--text)}
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chips span{font-size:13px;padding:6px 12px;border-radius:999px;background:rgba(56,224,200,.08);border:1px solid rgba(56,224,200,.2);color:var(--accent)}
blockquote{color:var(--muted);font-style:italic;font-size:15px;border-left:3px solid var(--accent);padding-left:14px}

/* SKILLS */
.skills-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.skill-col{background:var(--panel);border:1px solid var(--panel-brd);border-radius:var(--radius);padding:24px}
.skill-col h3{font-size:15px;margin-bottom:20px}
.bar{display:grid;grid-template-columns:1fr auto;gap:6px 10px;margin-bottom:15px;align-items:center}
.bar>span{font-size:13.5px;color:var(--muted)}
.bar b{font-size:12px;color:var(--accent);font-family:var(--mono)}
.track{grid-column:1/-1;height:6px;border-radius:6px;background:rgba(255,255,255,.07);overflow:hidden}
.track i{display:block;height:100%;width:0;border-radius:6px;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width 1.1s cubic-bezier(.2,.8,.2,1)}
.bar.in .track i{width:var(--w)}
.tool-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;justify-content:center}
.tool-cloud span{font-size:13px;color:var(--muted);padding:7px 14px;border-radius:999px;border:1px solid var(--panel-brd);background:rgba(255,255,255,.025);transition:.2s}
.tool-cloud span:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px)}

/* TIMELINE */
.timeline{list-style:none;position:relative;padding-left:34px}
.timeline:before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--accent),var(--accent-2),transparent)}
.timeline li{position:relative;margin-bottom:28px}
.t-dot{position:absolute;left:-30px;top:26px;width:14px;height:14px;border-radius:50%;background:var(--bg);border:2px solid var(--accent);box-shadow:0 0 0 4px rgba(56,224,200,.12)}
.t-card{background:var(--panel);border:1px solid var(--panel-brd);border-radius:var(--radius);padding:24px;transition:transform .25s,border-color .25s}
.t-card:hover{transform:translateX(6px);border-color:rgba(56,224,200,.4)}
.t-head{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;align-items:baseline}
.t-head h3{font-size:17px}
.t-time{font-family:var(--mono);font-size:12.5px;color:var(--accent)}
.t-org{color:var(--muted);font-size:14px;margin:6px 0 12px}
.t-card ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.t-card ul li{position:relative;padding-left:18px;font-size:14.5px;color:var(--muted)}
.t-card ul li:before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--accent-2)}

/* PROJECT CARDS */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{background:var(--panel);border:1px solid var(--panel-brd);border-radius:var(--radius);padding:26px;transition:transform .25s,border-color .25s,box-shadow .25s;position:relative;overflow:hidden}
.card:before{content:"";position:absolute;inset:0;background:radial-gradient(400px 200px at 100% 0%,rgba(91,140,255,.12),transparent 60%);opacity:0;transition:opacity .3s}
.card:hover{transform:translateY(-6px);border-color:rgba(91,140,255,.45);box-shadow:0 20px 50px rgba(0,0,0,.35)}
.card:hover:before{opacity:1}
.card-top{display:flex;gap:8px;margin-bottom:14px}
.tag{font-family:var(--mono);font-size:11.5px;color:var(--accent);background:rgba(56,224,200,.09);border:1px solid rgba(56,224,200,.22);padding:3px 10px;border-radius:6px}
.card h3{font-size:19px;margin-bottom:10px;font-family:var(--mono)}
.card p{color:var(--muted);font-size:14.5px;margin-bottom:18px}
.card-foot{display:flex;justify-content:space-between;align-items:center;font-size:13.5px}
.stars{color:#f7b955}
.card-foot a{color:var(--accent);font-weight:600}
.card-foot a:hover{text-decoration:underline}

/* POSTS */
.posts{display:flex;flex-direction:column;gap:16px}
.post{background:var(--panel);border:1px solid var(--panel-brd);border-radius:var(--radius);padding:26px 28px;cursor:pointer;transition:transform .25s,border-color .25s,background .25s}
.post:hover{transform:translateX(8px);border-color:rgba(56,224,200,.45);background:rgba(255,255,255,.05)}
.post time{font-family:var(--mono);font-size:12.5px;color:var(--accent)}
.post h3{font-size:20px;margin:8px 0 10px}
.post p{color:var(--muted);font-size:14.5px}
.post-meta{display:flex;gap:8px;font-size:12.5px;color:var(--muted);margin-top:14px}

/* CONTACT */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.contact-item{display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;gap:2px 16px;align-items:center;background:var(--panel);border:1px solid var(--panel-brd);border-radius:var(--radius);padding:20px 22px;transition:transform .25s,border-color .25s}
.contact-item:hover{transform:translateY(-4px);border-color:var(--accent)}
.ci-icon{grid-row:1/3;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:19px;background:linear-gradient(135deg,rgba(56,224,200,.18),rgba(91,140,255,.18));color:var(--accent)}
.ci-label{font-size:12.5px;color:var(--muted);font-family:var(--mono)}
.ci-val{font-size:15px;font-weight:600;word-break:break-all}

/* FOOTER */
.footer{border-top:1px solid var(--panel-brd);padding:30px 0;background:rgba(255,255,255,.015)}
.footer-inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:13.5px}
.footer-links a:hover{color:var(--accent)}

/* MODAL */
.modal{position:fixed;inset:0;z-index:100;display:none}
.modal.open{display:block}
.modal-backdrop{position:absolute;inset:0;background:rgba(3,6,12,.75);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.modal-panel{position:relative;max-width:760px;margin:6vh auto;max-height:88vh;overflow-y:auto;background:linear-gradient(180deg,#0f1728,#0a1120);border:1px solid var(--panel-brd);border-radius:var(--radius);padding:44px 44px 50px;animation:pop .3s ease}
@keyframes pop{from{transform:translateY(18px);opacity:0}}
.modal-close{position:absolute;top:16px;right:18px;width:38px;height:38px;border-radius:10px;border:1px solid var(--panel-brd);background:rgba(255,255,255,.04);color:var(--text);font-size:22px;cursor:pointer;line-height:1}
.modal-close:hover{border-color:var(--accent);color:var(--accent)}
.modal-body .m-time{font-family:var(--mono);font-size:13px;color:var(--accent)}
.modal-body h1{font-size:clamp(24px,3.4vw,34px);margin:12px 0 22px;line-height:1.25}
.modal-body h2{font-size:20px;margin:28px 0 12px}
.modal-body p{color:var(--muted);margin-bottom:14px;font-size:15px}
.modal-body ul{margin:0 0 16px 20px;color:var(--muted);font-size:15px}
.modal-body li{margin-bottom:8px}
.modal-body code{font-family:var(--mono);font-size:13.5px;background:rgba(255,255,255,.07);padding:2px 6px;border-radius:5px;color:var(--accent)}
.modal-body pre{background:rgba(0,0,0,.4);border:1px solid var(--panel-brd);border-radius:12px;padding:16px;overflow-x:auto;margin-bottom:16px}
.modal-body pre code{background:none;padding:0;color:#c7d3ea}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

/* RESPONSIVE */
@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero{min-height:auto;padding-top:130px}
  .about-grid{grid-template-columns:1fr}
  .skills-grid{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .scroll-hint{display:none}
}
@media(max-width:720px){
  .nav-links{position:fixed;top:66px;left:16px;right:16px;flex-direction:column;background:rgba(9,14,24,.97);border:1px solid var(--panel-brd);border-radius:16px;padding:10px;display:none;backdrop-filter:blur(14px)}
  .nav-links.open{display:flex}
  .nav-toggle{display:flex}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px}
  .contact-grid{grid-template-columns:1fr}
  .section{padding:72px 0}
  .modal-panel{padding:32px 22px 40px;margin:4vh 12px}
  .t-head{flex-direction:column;gap:4px}
}