/* ============================================================
   刘雪川 · 个人网站  liuxuechuan.top
   深色电影感 / 三页层级：index → resume → works
   ============================================================ */
:root{
  --bg:#0b0b0e;
  --bg2:#101014;
  --card:#16161c;
  --card2:#1c1c24;
  --line:#26262f;
  --ink:#f2f0ea;
  --sub:#8f8d96;
  --red:#e03a3a;
  --red-deep:#a52222;
  --gold:#d8b98a;
  --maxw:1120px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--red);color:#fff;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}

/* ---------- 通用容器 ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}

/* ---------- 顶部导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:99;
  background:rgba(11,11,14,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-in{
  max-width:var(--maxw);margin:0 auto;padding:0 28px;
  height:64px;display:flex;align-items:center;justify-content:space-between;
}
.logo{font-weight:800;letter-spacing:2px;font-size:17px;}
.logo em{font-style:normal;color:var(--red);}
.logo small{color:var(--sub);font-weight:400;font-size:12px;letter-spacing:3px;margin-left:10px;}
.nav-links{display:flex;gap:6px;}
.nav-links a{
  font-size:14px;color:var(--sub);padding:8px 16px;border-radius:999px;
  letter-spacing:2px;transition:.25s;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a.on{color:#fff;background:var(--card2);border:1px solid var(--line);}
.nav-links a.on::before{content:"/ ";color:var(--red);}

/* ---------- HERO（首页） ---------- */
.hero{
  min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  position:relative;overflow:hidden;
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(224,58,58,.13), transparent 60%),
    radial-gradient(800px 500px at -10% 110%, rgba(216,185,138,.07), transparent 60%),
    var(--bg);
}
.hero::after{ /* 胶片颗粒 */
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:5px 5px;
}
.hero-grid{
  display:grid;grid-template-columns:1.5fr .55fr;gap:72px;align-items:center;
  padding-top:80px;padding-bottom:40px;
}
.hero-pic{
  position:relative;justify-self:end;
}
.hero-pic img{
  width:300px;max-width:100%;aspect-ratio:3/4;object-fit:cover;object-position:top;
  display:block;
  border-radius:6px;border:1px solid var(--line);
  box-shadow:0 22px 60px rgba(0,0,0,.5);
  filter:saturate(.92) contrast(1.04);
}
.hero-pic::after{
  content:"";position:absolute;inset:-14px;border:1px solid rgba(224,58,58,.3);
  border-radius:8px;pointer-events:none;
}
.hero-pic::before{
  content:"";position:absolute;left:-34px;bottom:-18px;width:110px;height:1px;
  background:linear-gradient(90deg,rgba(224,58,58,.6),transparent);pointer-events:none;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:5px;color:var(--sub);
  margin-bottom:26px;
}
.hero-tag::before{content:"";width:44px;height:1px;background:var(--red);}
.hero h1{
  font-size:clamp(58px,11vw,128px);
  font-weight:900;letter-spacing:.08em;line-height:1.05;
}
.hero h1 span{color:var(--red);}
.hero-en{
  font-size:clamp(13px,2vw,17px);letter-spacing:.55em;color:var(--sub);
  margin-top:14px;text-transform:uppercase;
}
.hero-sub{
  margin-top:34px;font-size:clamp(15px,2.2vw,19px);color:#c9c7cf;max-width:640px;
  font-weight:300;
}
.hero-sub b{color:var(--ink);font-weight:600;}
.hero-cta{margin-top:46px;display:flex;gap:16px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 30px;border-radius:4px;font-size:15px;letter-spacing:3px;
  transition:.25s;
}
.btn-red{background:var(--red);color:#fff;}
.btn-red:hover{background:#f04b4b;transform:translateY(-2px);box-shadow:0 12px 32px rgba(224,58,58,.35);}
.btn-ghost{border:1px solid var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--red);color:var(--red);}
.hero-scroll{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);
  font-size:11px;letter-spacing:4px;color:var(--sub);
  animation:float 2.2s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translate(-50%,0);}50%{transform:translate(-50%,8px);}}

/* ---------- 数字带 ---------- */
.stats{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--bg2);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.stat{padding:44px 20px;text-align:center;position:relative;}
.stat+.stat::before{content:"";position:absolute;left:0;top:24%;height:52%;width:1px;background:var(--line);}
.stat b{font-size:clamp(30px,4vw,44px);font-weight:900;letter-spacing:1px;}
.stat b i{font-style:normal;color:var(--red);}
.stat span{display:block;font-size:12.5px;color:var(--sub);letter-spacing:2px;margin-top:8px;}

/* ---------- 区块通用 ---------- */
.section{padding:96px 0;}
.sec-head{margin-bottom:52px;}
.sec-head .en{
  font-size:12px;letter-spacing:.5em;color:var(--red);
  text-transform:uppercase;font-weight:600;
}
.sec-head h2{font-size:clamp(26px,4vw,38px);font-weight:800;letter-spacing:4px;margin-top:10px;}
.sec-head p{color:var(--sub);margin-top:12px;max-width:620px;font-size:15px;}

/* ---------- 能力卡片 ---------- */
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:30px 26px;position:relative;overflow:hidden;
  transition:.3s;
}
.card:hover{transform:translateY(-4px);border-color:#3a3a45;background:var(--card2);}
.card::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:2px;
  background:linear-gradient(90deg,var(--red),transparent 70%);
  opacity:0;transition:.3s;
}
.card:hover::before{opacity:1;}
.card .no{font-size:13px;color:var(--red);letter-spacing:3px;font-weight:700;}
.card h3{font-size:18px;margin:12px 0 10px;letter-spacing:1px;}
.card p{font-size:13.5px;color:var(--sub);line-height:1.85;}

/* ---------- 简历页 ---------- */
.page-top{padding:150px 0 30px;}
.kv{
  display:grid;grid-template-columns:repeat(5,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden;
}
.kv div{background:var(--card);padding:20px 18px;}
.kv b{display:block;font-size:12px;color:var(--sub);letter-spacing:2px;margin-bottom:6px;}
.kv span{font-size:15px;font-weight:600;}

.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:8px;top:6px;bottom:6px;width:1px;
  background:linear-gradient(var(--red),var(--line));
}
.tl-item{position:relative;margin-bottom:46px;}
.tl-item::before{
  content:"";position:absolute;left:-31px;top:10px;width:11px;height:11px;border-radius:50%;
  background:var(--bg);border:2px solid var(--red);
}
.tl-head{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:6px;}
.tl-head h3{font-size:19px;letter-spacing:1px;}
.tl-head h3 small{color:var(--red);font-size:13px;font-weight:600;margin-left:12px;letter-spacing:2px;}
.tl-head em{font-style:normal;color:var(--sub);font-size:13px;letter-spacing:1px;}
.tl-body{margin-top:14px;}
.tl-body li{
  list-style:none;position:relative;padding-left:20px;
  font-size:14.5px;color:#c9c7cf;margin-bottom:9px;
}
.tl-body li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:1.5px;background:var(--red);}
.tl-body li b{color:var(--ink);}
.badge-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px;}
.badge{
  font-size:12.5px;color:#d8b98a;background:rgba(216,185,138,.08);
  border:1px solid rgba(216,185,138,.25);border-radius:999px;padding:4px 14px;letter-spacing:1px;
}

/* ---------- 作品页 ---------- */
.work-note{
  border:1px dashed #3a3a45;border-radius:10px;padding:18px 24px;
  color:var(--sub);font-size:13.5px;margin-bottom:40px;
  background:var(--bg2);
}
.work-note b{color:var(--gold);}
.work{
  border:1px solid var(--line);border-radius:10px;overflow:hidden;
  background:var(--card);transition:.3s;display:flex;flex-direction:column;
}
.work:hover{transform:translateY(-4px);border-color:#3a3a45;}
.work-thumb{
  aspect-ratio:16/9;position:relative;overflow:hidden;
  background:
    radial-gradient(400px 200px at 30% 20%, rgba(224,58,58,.22), transparent 60%),
    radial-gradient(300px 200px at 80% 90%, rgba(216,185,138,.14), transparent 60%),
    #1a1a21;
  background-size:cover;background-position:center;background-repeat:no-repeat;
}
.work-thumb.has-img{
  background-size:contain;background-position:center;background-repeat:no-repeat;
  background-color:#0b0b0e;
}
.work-thumb::after{
  content:"▶";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:34px;color:rgba(255,255,255,.9);
  background:rgba(11,11,14,.35);opacity:0;transition:.3s;
}
.work:hover .work-thumb::after{opacity:1;}
.work-thumb .cat{
  position:absolute;top:14px;left:14px;font-size:11.5px;letter-spacing:2px;
  background:rgba(11,11,14,.75);border:1px solid var(--line);
  border-radius:999px;padding:3px 12px;color:var(--gold);
}
.work-thumb .soon{
  position:absolute;bottom:14px;right:14px;font-size:11.5px;letter-spacing:2px;
  background:var(--red);border-radius:999px;padding:3px 12px;color:#fff;
}
.work-info{padding:20px 22px;}
.work-info h3{font-size:16.5px;letter-spacing:.5px;}
.work-info p{font-size:13px;color:var(--sub);margin-top:6px;}
.work-video{
  width:100%;aspect-ratio:16/9;display:block;background:#0b0b0e;object-fit:contain;
  border-bottom:1px solid var(--line);
}

/* ---------- 页脚 / 联系 ---------- */
.footer{
  border-top:1px solid var(--line);background:var(--bg2);
  padding:70px 0 40px;margin-top:40px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;}
.footer h3{font-size:clamp(24px,3.4vw,34px);font-weight:800;letter-spacing:3px;}
.footer h3 i{font-style:normal;color:var(--red);}
.footer .en{font-size:11.5px;letter-spacing:.4em;color:var(--sub);margin-top:10px;text-transform:uppercase;}
.contact-list{display:flex;flex-direction:column;gap:14px;}
.contact-list a,.contact-list span{
  display:flex;align-items:center;gap:12px;font-size:14.5px;color:#c9c7cf;transition:.25s;
}
.contact-list a:hover{color:var(--red);}
.contact-list .ic{
  width:38px;height:38px;border:1px solid var(--line);border-radius:8px;
  display:flex;align-items:center;justify-content:center;font-size:15px;background:var(--card);
}
.copy{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
  font-size:12px;color:#5d5b64;letter-spacing:1px;
}
.copy b{color:var(--sub);font-weight:600;}

/* ---------- 打印样式（简历页导出 PDF 用） ---------- */
@media print{
  .nav,.footer,.no-print{display:none !important;}
  body{background:#fff;color:#111;}
  .card,.kv div,.work{background:#fff;border-color:#ddd;}
  .tl-body li{color:#333;}
  .kv b,.sec-head .en{color:#a52222;}
  .tl-body li b,.kv span{color:#111;}
  .footer h3{color:#111;}
  .section{padding:30px 0;}
}

/* ---------- 响应式 ---------- */
@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr;gap:36px;padding-top:100px;text-align:center;}
  .hero-text{order:2;}
  .hero-pic{order:1;justify-self:center;}
  .hero-pic img{width:230px;}
  .hero-sub{max-width:560px;margin-left:auto;margin-right:auto;}
  .hero-cta{justify-content:center;}
  .grid4{grid-template-columns:repeat(2,1fr);}
  .grid3{grid-template-columns:repeat(2,1fr);}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(3)::before{display:none;}
  .kv{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:560px){
  .grid4,.grid3,.grid2{grid-template-columns:1fr;}
  .nav-links a{padding:7px 10px;font-size:13px;letter-spacing:1px;}
  .logo small{display:none;}
  .section{padding:64px 0;}
}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:.8s cubic-bezier(.16,1,.3,1);}
.reveal.in{opacity:1;transform:none;}