*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  font-family:'Inter',sans-serif;
  background:#050505;
  color:#fff;
  overflow-x:hidden;
}

a{
  text-decoration:none;
  color:inherit;
}

/* 背景 */

.bg-noise{
  position:fixed;
  inset:0;
  opacity:.03;
  background-image:url("https://grainy-gradients.vercel.app/noise.svg");
  pointer-events:none;
  z-index:1;
}

.gradient-ball{
  position:fixed;
  border-radius:50%;
  filter:blur(120px);
  z-index:0;
}

.ball-1{
  width:500px;
  height:500px;
  background:#ffffff10;
  top:-100px;
  left:-100px;
}

.ball-2{
  width:400px;
  height:400px;
  background:#ffffff08;
  right:-100px;
  bottom:-100px;
}

/* header */

.header{
  position:fixed;
  top:0;
  width:100%;
  padding:28px 8%;
  display:flex;
  justify-content:space-between;
  align-items:center;
  z-index:1000;

  backdrop-filter:blur(20px);
  background:rgba(0,0,0,.25);
  border-bottom:1px solid rgba(255,255,255,.05);
}

.logo{
  font-size:30px;
  font-weight:800;
}

nav{
  display:flex;
  gap:40px;
}

nav a{
  color:#aaa;
  transition:.4s;
}

nav a:hover{
  color:#fff;
}

/* hero */

.hero{
  min-height:100vh;
  display:flex;
  align-items:center;
  padding:0 8%;
  position:relative;
  z-index:2;
}

.hero-content{
  max-width:1000px;
}

.hero-mini{
  color:#888;
  letter-spacing:4px;
  margin-bottom:30px;
}

.hero-title{
  font-size:110px;
  line-height:1;
  font-weight:800;
  margin-bottom:40px;
}

.hero-title span{
  display:block;
}

.hero-desc{
  font-size:22px;
  color:#9a9a9a;
  max-width:760px;
  line-height:1.8;
  margin-bottom:50px;
}

.hero-buttons{
  display:flex;
  gap:20px;
}

.btn{
  padding:16px 32px;
  border-radius:999px;
  transition:.4s;
}

.primary{
  background:#fff;
  color:#000;
}

.ghost{
  border:1px solid rgba(255,255,255,.2);
}

.ghost:hover{
  background:#fff;
  color:#000;
}

.hero-glow{
  position:absolute;
  width:800px;
  height:800px;
  background:radial-gradient(circle,#ffffff10 0%,transparent 70%);
  top:50%;
  left:50%;
  transform:translate(-50%,-50%);
  z-index:-1;
}

/* section */

.section{
  padding:160px 8%;
  position:relative;
  z-index:2;
}

.dark{
  background:#0a0a0a;
}

.section-head{
  margin-bottom:80px;
}

.section-head.center{
  text-align:center;
}

.section-head span{
  color:#666;
  letter-spacing:4px;
}

.section-head h2{
  font-size:72px;
  margin-top:20px;
}

.text-gradient{
  background:linear-gradient(to right,#fff,#666);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
}

/* about */

.about-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:30px;
}

.glass-card{
  padding:50px;
  border-radius:30px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(20px);
  transition:.5s;
}

.glass-card:hover{
  transform:translateY(-10px);
}

.glass-card h3{
  font-size:30px;
  margin-bottom:20px;
}

.glass-card p{
  color:#999;
  line-height:1.8;
}

/* skills */

.skills{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:30px;
}

.skill{
  padding:40px;
  border-radius:24px;
  background:#111;
}

.skill h3{
  margin-bottom:20px;
}

.skill p{
  color:#777;
}

/* projects */

.projects-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(340px,1fr));
  gap:30px;
}

.project-card{
  padding:40px;
  border-radius:32px;
  background:linear-gradient(
    180deg,
    rgba(255,255,255,.05),
    rgba(255,255,255,.02)
  );
  border:1px solid rgba(255,255,255,.08);
  transition:.5s;
}

.project-card:hover{
  transform:translateY(-10px);
}

.project-number{
  color:#666;
  margin-bottom:20px;
}

.project-card h3{
  font-size:32px;
  margin-bottom:20px;
}

.project-card p{
  color:#999;
  line-height:1.8;
  margin-bottom:30px;
}

.project-tags{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-bottom:30px;
}

.project-tags span{
  padding:8px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08);
  font-size:13px;
}

.project-link{
  color:#fff;
}

/* contact */

.contact-box{
  padding:100px;
  border-radius:40px;
  background:linear-gradient(
    145deg,
    rgba(255,255,255,.06),
    rgba(255,255,255,.02)
  );
  border:1px solid rgba(255,255,255,.08);
}

.contact-box h2{
  font-size:72px;
  margin:30px 0;
}

.contact-box p{
  font-size:28px;
  color:#999;
}

/* footer */

footer{
  padding:40px;
  text-align:center;
  color:#666;
}

/* 动画 */

.reveal{
  opacity:0;
  transform:translateY(40px);
}

.reveal.active{
  opacity:1;
  transform:translateY(0);
  transition:1s cubic-bezier(.2,.65,.2,1);
}

.reveal-card{
  opacity:0;
  transform:translateY(60px) scale(.95);
}

.reveal-card.active{
  opacity:1;
  transform:translateY(0) scale(1);
  transition:1s cubic-bezier(.2,.65,.2,1);
}

/* 响应式 */

@media(max-width:768px){

  nav{
    display:none;
  }

  .hero-title{
    font-size:56px;
  }

  .hero-desc{
    font-size:18px;
  }

  .section{
    padding:120px 6%;
  }

}
.contact-info{

  display:flex;

  flex-direction:column;

  gap:16px;

  margin-top:20px;
}

.contact-info p{

  font-size:24px;

  color:#bdbdbd;

  letter-spacing:.5px;
}