:root{
  --bg:#f7f8fa;
  --paper:#ffffff;
  --text:#18202c;
  --muted:#657184;
  --line:#e4e8ee;
  --blue:#2457d6;
  --blue-soft:#edf3ff;
  --green:#176d5a;
  --max:1080px;
  --shadow:0 10px 28px rgba(26,39,64,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  line-height:1.72;
}
a{color:inherit;text-decoration:none}
img,video{display:block;max-width:100%}
.container{width:min(var(--max),calc(100% - 36px));margin:auto}
header{
  position:sticky;top:0;z-index:30;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{height:66px;display:flex;align-items:center;justify-content:space-between}
.brand{font-family:"Space Grotesk",sans-serif;font-size:1.18rem;font-weight:700}
.brand b{color:var(--blue)}
nav{display:flex;gap:24px;align-items:center}
nav a{font-size:.91rem;color:var(--muted)}
nav a:hover,nav a.active{color:var(--blue)}
.cv-link{border:1px solid var(--line);padding:7px 11px;border-radius:9px;background:#fff}
.menu{display:none;border:0;background:transparent;font-size:1.35rem}
main{min-height:70vh}
.hero{padding:88px 0 60px}
.hero-inner{max-width:850px}
.eyebrow{font-size:.76rem;letter-spacing:.13em;font-weight:800;color:var(--blue);text-transform:uppercase}
h1,h2,h3{font-family:"Space Grotesk","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.2}
h1{font-size:clamp(3rem,7vw,5.8rem);letter-spacing:-.055em;margin:.12em 0 .22em}
h1 span{color:var(--blue)}
.hero p{font-size:1.12rem;color:var(--muted);max-width:760px;margin:0}
.hero-meta{display:flex;gap:10px 22px;flex-wrap:wrap;margin-top:24px;color:#495467;font-size:.92rem}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.btn{display:inline-flex;align-items:center;padding:10px 14px;border-radius:9px;border:1px solid var(--line);background:#fff;font-weight:700;font-size:.88rem}
.btn.primary{background:var(--blue);color:#fff;border-color:var(--blue)}
.section{padding:54px 0}
.section + .section{border-top:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:24px}
.section-head h2{margin:0;font-size:1.8rem;letter-spacing:-.025em}
.section-head p{margin:0;color:var(--muted);font-size:.91rem}
.more{color:var(--blue);font-weight:700;font-size:.88rem}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;box-shadow:var(--shadow)
}
.card-media{aspect-ratio:16/9;overflow:hidden;background:#e9edf4}
.card-media img,.card-media video{width:100%;height:100%;object-fit:cover}
.card-body{padding:18px}
.label{font-size:.72rem;font-weight:800;letter-spacing:.08em;color:var(--blue);text-transform:uppercase}
.card h3{font-size:1.06rem;margin:.35rem 0 .55rem}
.card p{font-size:.9rem;color:var(--muted);margin:0}
.tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:14px}
.tags span{font-size:.72rem;background:var(--blue-soft);color:#3a568d;padding:4px 8px;border-radius:999px}
.list{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.list-item{display:grid;grid-template-columns:125px 1fr;gap:22px;padding:20px;border-bottom:1px solid var(--line)}
.list-item:last-child{border-bottom:0}
.list-side{font-size:.82rem;color:var(--green);font-weight:800}
.list-item h3{font-size:1rem;margin:0 0 6px}
.list-item p{margin:0;color:var(--muted);font-size:.9rem}
.page-head{padding:68px 0 34px}
.page-head h1{font-size:clamp(2.6rem,5vw,4.4rem);margin:.1em 0 .15em}
.page-head p{color:var(--muted);max-width:760px}
.project-list{display:flex;flex-direction:column;gap:18px}
.project-row{
  display:grid;grid-template-columns:310px 1fr;gap:24px;background:#fff;
  border:1px solid var(--line);border-radius:14px;overflow:hidden
}
.project-row.no-media{grid-template-columns:1fr}
.project-row .media{min-height:210px;background:#eef1f6}
.project-row .media img,.project-row .media video{width:100%;height:100%;object-fit:cover}
.project-copy{padding:22px}
.project-copy h2{font-size:1.25rem;margin:.3rem 0 .55rem}
.project-copy p{color:var(--muted);font-size:.91rem;margin:.4rem 0}
.project-copy ul{margin:10px 0 0;padding-left:20px;color:#475367;font-size:.9rem}
.project-copy li{margin:3px 0}
.result-strip{margin-top:15px;padding:11px 13px;background:#f5f8ff;border-radius:9px;color:#40587f;font-size:.84rem}
.media-pair{display:grid;grid-template-columns:1.4fr .8fr;gap:12px;margin-top:15px}
.media-pair img,.media-pair video{border-radius:10px;border:1px solid var(--line);width:100%;height:100%;object-fit:cover}
.pub-item{padding:22px 0;border-bottom:1px solid var(--line)}
.pub-item:first-child{border-top:1px solid var(--line)}
.pub-item h3{font-size:1.05rem;margin:0 0 6px}
.pub-item p{margin:0;color:var(--muted);font-size:.9rem}
.status{display:inline-block;margin-top:9px;padding:4px 8px;border-radius:6px;background:var(--blue-soft);color:#35518d;font-size:.76rem;font-weight:800}
.profile-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
.panel h2{font-size:1.18rem;margin:0 0 14px}
.panel p,.panel li{color:var(--muted);font-size:.91rem}
.panel ul{padding-left:20px;margin:0}
.skill-line{padding:9px 0;border-bottom:1px solid var(--line)}
.skill-line:last-child{border-bottom:0}
.skill-line strong{display:block;font-size:.88rem}
.skill-line span{font-size:.85rem;color:var(--muted)}
.video-block{margin-top:16px;max-width:720px}
.video-block video{border-radius:12px;border:1px solid var(--line);width:100%;background:#111}
footer{margin-top:60px;background:#fff;border-top:1px solid var(--line)}
.footer{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:18px;color:var(--muted);font-size:.82rem}
@media(max-width:820px){
  nav{display:none;position:absolute;top:66px;left:18px;right:18px;flex-direction:column;align-items:flex-start;padding:16px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
  nav.open{display:flex}.menu{display:block}
  .cards{grid-template-columns:1fr}
  .project-row{grid-template-columns:1fr}
  .profile-grid{grid-template-columns:1fr}
}
@media(max-width:580px){
  .container{width:min(var(--max),calc(100% - 26px))}
  .hero{padding:62px 0 40px}
  .section{padding:42px 0}
  .list-item{grid-template-columns:1fr;gap:5px}
  .media-pair{grid-template-columns:1fr}
  .footer{flex-direction:column;align-items:flex-start;justify-content:center}
}
.contact-inline{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-top:20px;
  color:#495467;
  font-size:.92rem;
}

.contact-inline strong{
  color:#18202c;
  font-weight:600;
}

.copy-email-btn{
  border:1px solid #e4e8ee;
  background:#ffffff;
  color:#2457d6;
  padding:6px 10px;
  border-radius:8px;
  cursor:pointer;
  font-weight:600;
  font-size:.82rem;
  font-family:inherit;
}

.copy-email-btn:hover{
  background:#edf3ff;
}