:root{
  --bg:#070b18;
  --bg2:#0a1024;
  --panel:rgba(18,26,52,.55);
  --panel-brd:rgba(120,160,255,.18);
  --txt:#e6ecff;
  --muted:#9fb0d8;
  --accent:#5ec8ff;
  --accent2:#8ab4ff;
  --purple:#a78bfa;
  --glow:0 0 40px rgba(94,200,255,.25);
  --maxw:980px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:radial-gradient(1200px 800px at 70% -10%,#101a3a 0%,var(--bg2) 40%,var(--bg) 100%);
  color:var(--txt);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
.stars{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 20% 30%,#fff,transparent),
    radial-gradient(1px 1px at 80% 20%,#cfe3ff,transparent),
    radial-gradient(1.5px 1.5px at 50% 60%,#fff,transparent),
    radial-gradient(1px 1px at 35% 80%,#a9c6ff,transparent),
    radial-gradient(1px 1px at 65% 45%,#fff,transparent),
    radial-gradient(1.5px 1.5px at 90% 70%,#dfeaff,transparent);
  opacity:.5;
  animation:twinkle 6s ease-in-out infinite alternate;
}
@keyframes twinkle{from{opacity:.35}to{opacity:.65}}

/* NAV */
.nav{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 22px;
  background:rgba(7,11,24,.72);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(120,160,255,.12);
}
.brand{font-weight:800;letter-spacing:.08em;color:var(--txt);text-decoration:none;font-size:18px}
.brand span{color:var(--accent)}
.links{display:flex;gap:6px;align-items:center}
.links a{
  color:var(--muted);text-decoration:none;font-size:14px;
  padding:8px 12px;border-radius:10px;transition:.2s;
}
.links a:hover{color:var(--txt);background:rgba(120,160,255,.1)}
.links a.active{color:var(--txt);background:rgba(94,200,255,.14);box-shadow:inset 0 -2px 0 var(--accent)}
.links a.cta{
  color:#04101f;background:linear-gradient(135deg,var(--accent),var(--accent2));
  font-weight:700;
}
.links a.cta:hover{filter:brightness(1.1);transform:translateY(-1px)}
.burger{display:none;background:none;border:1px solid var(--panel-brd);color:var(--txt);
  font-size:22px;line-height:1;padding:4px 12px;border-radius:10px;cursor:pointer}

/* LAYOUT */
main{position:relative;z-index:1;max-width:var(--maxw);margin:0 auto;padding:0 20px 60px}
.block{padding:64px 0 8px}
h2{
  font-size:26px;font-weight:800;margin-bottom:26px;display:flex;align-items:baseline;gap:12px;
}
h2 .num{
  font-size:14px;color:var(--accent);font-weight:700;
  border:1px solid var(--panel-brd);border-radius:8px;padding:2px 8px;
  background:rgba(94,200,255,.08);
}

/* HERO */
.hero{position:relative;text-align:center;padding:110px 10px 70px}
.eyebrow{letter-spacing:.32em;text-transform:uppercase;color:var(--accent);font-size:13px;margin-bottom:18px}
.logo{
  font-size:clamp(64px,16vw,140px);font-weight:900;letter-spacing:.04em;line-height:.95;
  background:linear-gradient(180deg,#fff,#9cc4ff 60%,#5ec8ff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 6px 30px rgba(94,200,255,.35));
}
.role{font-size:clamp(18px,4vw,24px);font-weight:700;margin-top:10px;color:var(--txt)}
.tagline{font-size:16px;color:var(--muted);margin-top:6px}
.principle{margin-top:26px;color:#cdd9ff;font-size:15px}
.principle strong{color:var(--accent)}
.scrollhint{
  display:inline-block;margin-top:34px;color:var(--accent2);text-decoration:none;font-size:14px;
  border:1px solid var(--panel-brd);padding:10px 18px;border-radius:30px;transition:.25s;
}
.scrollhint:hover{background:rgba(94,200,255,.12);transform:translateY(2px)}

/* CARDS */
.card{
  background:var(--panel);border:1px solid var(--panel-brd);border-radius:18px;
  padding:24px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  box-shadow:0 10px 30px rgba(0,0,0,.35);margin-bottom:18px;
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.card:hover{transform:translateY(-4px);border-color:rgba(94,200,255,.4);box-shadow:0 16px 40px rgba(94,200,255,.15)}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.grid .card{margin-bottom:0}
.prose p{margin:10px 0;color:#d4ddf6}
.prose ul,.prose ol{margin:12px 0 12px 20px;color:#cdd9ff}
.prose li{margin:6px 0}
.muted{color:var(--muted);font-size:14px}
.quote{
  margin-top:14px;padding:12px 16px;border-left:3px solid var(--accent);
  background:rgba(94,200,255,.07);border-radius:0 12px 12px 0;color:#cfe0ff;font-size:14px;
}
.quote.big{font-size:18px;font-weight:700;color:var(--txt);border-color:var(--purple);background:rgba(167,139,250,.1)}

/* SKILLS */
.skill h3{font-size:19px;margin:8px 0 12px;display:flex;flex-direction:column;gap:2px}
.skill h3 small{font-weight:500;color:var(--muted);font-size:12px}
.skill-ic{font-size:34px;margin-bottom:6px}
.skill ul{list-style:none;margin:0;padding:0}
.skill ul li{padding:7px 0 7px 22px;position:relative;color:#cdd9ff;font-size:14px;border-bottom:1px dashed rgba(120,160,255,.12)}
.skill ul li:last-child{border-bottom:none}
.skill ul li::before{content:"▹";position:absolute;left:0;color:var(--accent)}

/* PROJECTS */
.proj h3{font-size:20px;color:var(--accent2);margin-bottom:8px}
.proj .desc{color:var(--txt);font-weight:600;margin-bottom:8px}

/* CASE */
.case h3{font-size:20px;margin-bottom:12px;color:var(--purple)}
.flow-inline{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:18px 0}
.flow-inline span{
  background:rgba(94,200,255,.1);border:1px solid var(--panel-brd);
  padding:8px 14px;border-radius:20px;font-size:14px;color:#dce8ff;
}
.flow-inline i{color:var(--accent);font-style:normal}

/* CONTACT */
.wanted{list-style:none!important;margin:14px 0!important}
.wanted li{padding:8px 0 8px 26px;position:relative;color:#dce8ff}
.wanted li::before{content:"✓";position:absolute;left:0;color:#6ee7a8;font-weight:700}
.contact-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.chip{
  background:rgba(120,160,255,.1);border:1px solid var(--panel-brd);
  padding:10px 16px;border-radius:30px;font-size:14px;color:#dce8ff;
}
.chip b{color:var(--accent)}

/* FOOTER */
.foot{
  position:relative;z-index:1;text-align:center;padding:30px 20px 50px;
  color:var(--muted);font-size:13px;display:flex;flex-direction:column;gap:4px;
  border-top:1px solid rgba(120,160,255,.1);max-width:var(--maxw);margin:0 auto;
}

/* RESPONSIVE */
@media(max-width:760px){
  .burger{display:block}
  .links{
    position:absolute;top:100%;right:0;left:0;flex-direction:column;align-items:stretch;
    background:rgba(7,11,24,.96);border-bottom:1px solid var(--panel-brd);
    padding:10px;gap:4px;display:none;
  }
  .links.open{display:flex}
  .links a{padding:12px}
  .grid{grid-template-columns:1fr}
  .block{padding:48px 0 4px}
  h2{font-size:22px}
  .brk{display:none}
}