/* ============================================================
   个人作品集 · 工程编辑风样式
   Paper · Ink · Vermilion  /  Space Grotesk + 系统中文
   ============================================================ */

:root{
  --paper:#F5F2EA;
  --paper-2:#EDE9DD;
  --card:#FCFAF4;
  --ink:#1C1913;
  --ink-2:#57503F;
  --ink-3:#8A8271;
  --line:rgba(28,25,19,.14);
  --line-soft:rgba(28,25,19,.08);
  --acc:#E04F2A;
  --acc-deep:#B83A18;
  --on-acc:#FFF9F2;
  --mono:ui-monospace,"SF Mono","Cascadia Mono",Consolas,"Roboto Mono",monospace;
  --disp:"Space Grotesk",-apple-system,"Segoe UI",sans-serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --shadow:0 1px 2px rgba(28,25,19,.04),0 10px 30px -18px rgba(28,25,19,.22);
  --r-lg:18px;
  --r-md:10px;
  --wrap:1120px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--acc);color:var(--on-acc)}
a{color:inherit;text-decoration:none}
img{max-width:100%}
h1,h2,h3,h4,p,dl,ol,ul{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;cursor:pointer;color:inherit}
:focus-visible{outline:2px solid var(--acc);outline-offset:3px;border-radius:4px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
.mono{font-family:var(--mono)}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:currentColor}

/* ---------- 顶部提示条（示例内容提醒，正式投递前可删） ---------- */
.notice{
  background:var(--ink);color:var(--paper);
  font-size:13px;line-height:1.5;
  display:flex;align-items:center;justify-content:center;gap:16px;
  padding:8px 40px 8px 16px;position:relative;text-align:center;
}
.notice-x{
  position:absolute;right:10px;top:50%;translate:0 -50%;
  background:none;border:0;color:inherit;font-size:18px;line-height:1;opacity:.7;
}
.notice-x:hover{opacity:1}
.notice.hidden{display:none}

/* ---------- 顶栏 ---------- */
.top{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--paper) 88%,transparent);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.top-in{display:flex;align-items:center;gap:28px;height:64px}
.logo{
  font-family:var(--disp);font-weight:600;font-size:22px;letter-spacing:-.02em;
  display:inline-flex;align-items:baseline;
}
.logo::after{content:".";color:var(--acc)}
.nav{display:flex;gap:26px;margin-right:auto;margin-left:8px}
.nav a{font-size:14.5px;color:var(--ink-2);position:relative;padding:4px 0;transition:color .2s}
.nav a::after{
  content:"";position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:var(--acc);transition:width .25s cubic-bezier(.65,0,.35,1);
}
.nav a:hover{color:var(--ink)}
.nav a:hover::after{width:100%}
.top-actions{display:flex;align-items:center;gap:14px}
.lang{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.08em;
  background:transparent;border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;transition:all .2s;
}
.lang:hover{border-color:var(--ink)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--acc);color:var(--on-acc);
  border:1px solid var(--acc);
  border-radius:999px;padding:11px 22px;
  font-size:14.5px;font-weight:600;line-height:1;
  transition:background .2s,transform .2s,box-shadow .2s;
}
.btn:hover{background:var(--acc-deep);border-color:var(--acc-deep);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--ink);background:transparent}
.btn-sm{padding:8px 16px;font-size:13px}
.btn-resume .arw{display:none}

/* ---------- Hero ---------- */
.hero{padding:clamp(64px,10vw,128px) 0 clamp(40px,6vw,72px)}
.hero-top{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;flex-wrap:wrap}
.kicker{font-size:17px;color:var(--ink-2)}
.kicker .hero-name{font-weight:600;color:var(--ink)}
.tag-soft{
  font-size:12px;color:var(--ink-3);border:1px solid var(--line);
  border-radius:999px;padding:2px 10px;margin-left:10px;vertical-align:2px;
  font-family:var(--mono);letter-spacing:.02em;
}
.status-pill{
  display:inline-flex;align-items:center;gap:9px;
  color:var(--acc);font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;
  border:1px solid color-mix(in srgb,var(--acc) 35%,transparent);
  border-radius:999px;padding:7px 16px;background:color-mix(in srgb,var(--acc) 7%,transparent);
}
.status-pill .dot{background:var(--acc);animation:pulse 2.2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 color-mix(in srgb,var(--acc) 40%,transparent)}55%{box-shadow:0 0 0 7px transparent}}

.hero-title{
  font-family:var(--disp);font-weight:600;
  font-size:clamp(38px,6.4vw,74px);
  line-height:1.06;letter-spacing:-.022em;
  max-width:19ch;margin:26px 0 22px;
}
.hero-bio{max-width:60ch;color:var(--ink-2);font-size:16.5px}
.hero-cta{display:flex;gap:14px;margin:32px 0 44px;flex-wrap:wrap}

.facts{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
}
.fact{padding:20px 24px 4px 0}
.fact + .fact{border-left:1px solid var(--line-soft);padding-left:24px}
.fact dt{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ink-3);margin-bottom:6px;
}
.fact dd{font-size:14.5px;font-weight:600;color:var(--ink)}

/* ---------- 通用分区 ---------- */
.sec{padding:clamp(56px,8vw,96px) 0;border-top:1px solid var(--line-soft)}
.sec-head{display:flex;align-items:baseline;gap:20px;margin-bottom:14px}
.sec-num{
  font-family:var(--disp);font-weight:500;color:var(--acc);
  font-size:15px;letter-spacing:.05em;
}
.sec-title h2{
  font-family:var(--disp);font-weight:600;
  font-size:clamp(24px,3.4vw,34px);letter-spacing:-.01em;line-height:1.15;
  text-transform:uppercase;
}
.sec-title p{font-size:13.5px;color:var(--ink-3);margin-top:2px;font-family:var(--mono);letter-spacing:.12em}
.sec-line{flex:1;height:1px;background:var(--line-soft);align-self:center;margin-left:auto}
.sec-note{font-size:14px;color:var(--ink-3);margin:0 0 34px 34px}
.sec-note b{color:var(--ink-2);font-weight:600}

/* ---------- 项目 ---------- */
.pj-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.pj{
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .3s cubic-bezier(.65,0,.35,1),box-shadow .3s,border-color .3s;
}
.pj:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--line)}
.pj.featured{grid-column:1/-1}

/* 封面：蓝图网格 + 描边序号，无图片依赖 */
.cover{
  position:relative;display:block;height:200px;overflow:hidden;
  background-color:var(--paper-2);
  background-image:
    linear-gradient(var(--line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:22px 22px;
}
.cover::before{
  content:attr(data-no);
  position:absolute;right:18px;bottom:-18px;
  font-family:var(--disp);font-weight:600;
  font-size:130px;line-height:1;letter-spacing:-.04em;
  color:transparent;-webkit-text-stroke:1.5px rgba(28,25,19,.28);
  transition:transform .45s cubic-bezier(.65,0,.35,1);
}
.pj:hover .cover::before{transform:translate(-8px,-8px) rotate(-3deg)}
.cover::after{
  content:"";position:absolute;left:0;top:0;
  width:34px;height:34px;
  background:
    linear-gradient(var(--acc),var(--acc)) 0 0/16px 3px no-repeat,
    linear-gradient(var(--acc),var(--acc)) 0 0/3px 16px no-repeat,
    linear-gradient(var(--acc),var(--acc)) 100% 100%/16px 3px no-repeat,
    linear-gradient(var(--acc),var(--acc)) 100% 100%/3px 16px no-repeat;
}
.cover[data-variant="b"]::after{background-position:100% 0,100% 0,0 100%,0 100%}
.cover[data-variant="c"]{background-color:#E8E3D4}
.cover[data-variant="c"]::before{-webkit-text-stroke-color:rgba(28,25,19,.4);color:transparent}
.featured .cover{height:clamp(210px,24vw,290px)}

.pj-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.pj-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.pj-year{font-family:var(--mono);font-size:12px;color:var(--acc);letter-spacing:.04em;font-weight:500}
.pj-tag{
  font-size:11.5px;color:var(--ink-3);border:1px solid var(--line);
  border-radius:999px;padding:2px 9px;letter-spacing:.02em;
}
.pj-title{
  font-family:var(--disp);font-weight:600;font-size:23px;letter-spacing:-.01em;
  line-height:1.3;display:flex;align-items:center;gap:10px;flex-wrap:wrap;
}
.pj-title .ext{
  font-size:16px;color:var(--acc);transition:transform .25s;display:inline-block;
}
.pj:hover .pj-title .ext{transform:translate(3px,-3px)}
.pj-role{font-size:13px;color:var(--ink-3);font-family:var(--mono)}
.pj-desc{font-size:14.5px;color:var(--ink-2)}
.pj-points{margin-top:2px;display:grid;gap:7px}
.pj-points li{
  font-size:14px;color:var(--ink-2);padding-left:20px;position:relative;
}
.pj-points li::before{
  content:"";position:absolute;left:2px;top:9px;width:9px;height:2px;background:var(--acc);
}
.pj-foot{margin-top:auto;display:flex;align-items:flex-end;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-top:14px}
.chips{display:flex;flex-wrap:wrap;gap:7px}
.chips li{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.02em;
  border:1px solid var(--line);border-radius:6px;padding:3px 9px;color:var(--ink-2);
}
.chips li:first-child{border-color:var(--ink);color:var(--ink)}
.pj-links{display:flex;gap:14px}
.pj-links a{font-size:13px;font-weight:600;color:var(--acc);display:inline-flex;align-items:center;gap:4px}
.pj-links a span{transition:transform .2s}
.pj-links a:hover span{transform:translateX(3px)}

/* ---------- 技能 ---------- */
.sk-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px 40px}
.sk{border-top:1px solid var(--line);padding-top:18px}
.sk h4{
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--ink-3);margin-bottom:14px;font-weight:500;
}
.sk h4 em{font-style:normal;color:var(--acc)}
.sk .chips li{font-size:13px;padding:5px 12px;border-radius:999px;background:var(--card);border-color:var(--line)}
.sk .chips li:hover{border-color:var(--ink);color:var(--ink)}

/* ---------- 经历时间线 ---------- */
.tl{position:relative;margin-left:6px;padding-left:34px;border-left:1px solid var(--line);display:grid;gap:0}
.tl-item{position:relative;padding:0 0 42px}
.tl-item:last-child{padding-bottom:6px}
.tl-item::before{
  content:"";position:absolute;left:-41px;top:6px;
  width:13px;height:13px;border-radius:50%;
  background:var(--paper);border:3px solid var(--acc);
}
.tl-item.edu::before{border-color:var(--ink-3)}
.tl-date{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;color:var(--acc);
  margin-bottom:8px;display:flex;align-items:center;gap:10px;
}
.demo-badge{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;color:var(--ink-3);
  border:1px dashed var(--line);border-radius:999px;padding:2px 8px;
}
.tl-main h4{font-size:19px;font-weight:600;letter-spacing:-.01em}
.tl-org{font-size:13.5px;color:var(--ink-3);margin-top:2px;font-family:var(--mono)}
.tl-desc{margin-top:10px;max-width:70ch;color:var(--ink-2);font-size:14.5px}
.tl-desc li{padding-left:18px;position:relative;margin-top:5px}
.tl-desc li::before{content:"";position:absolute;left:2px;top:10px;width:7px;height:2px;background:var(--acc)}

/* ---------- 联系 ---------- */
.lead{
  font-family:var(--disp);font-weight:600;
  font-size:clamp(26px,3.8vw,40px);line-height:1.3;letter-spacing:-.015em;
  max-width:26ch;margin:26px 0 40px;
}
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:44px;align-items:start}
.contact-items{display:grid;gap:0}
.citem{
  border-top:1px solid var(--line);padding:22px 0;
}
.c-lab{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.2em;
  color:var(--ink-3);display:block;margin-bottom:6px;
}
.c-val{font-size:17px;font-weight:600;word-break:break-all}
.c-val.mono{font-weight:500}
.c-val:hover{color:var(--acc)}
.citem .note{font-size:13.5px;color:var(--ink-3);display:block;margin-top:6px}
.qr-box{
  margin-top:16px;width:148px;height:148px;
  border:1.5px dashed var(--line);border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  text-align:center;padding:10px;font-size:12px;color:var(--ink-3);line-height:1.6;
  background:
    linear-gradient(var(--line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:18px 18px;background-color:var(--card);
}
.contact-resume{display:flex;flex-direction:column;gap:12px;align-items:flex-start;padding-top:22px}
.contact-resume p{font-size:14px;color:var(--ink-2);margin-bottom:6px}
.contact-resume .btn{min-width:230px}

/* ---------- 页脚 ---------- */
.foot{border-top:1px solid var(--line-soft)}
.foot-in{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:26px;padding-bottom:30px;flex-wrap:wrap;
}
.foot p{font-size:13px;color:var(--ink-3)}
.foot a{font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--ink-2)}
.foot a:hover{color:var(--acc)}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s cubic-bezier(.65,0,.35,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .status-pill .dot{animation:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:920px){
  .pj-grid{grid-template-columns:1fr}
  .sk-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr;gap:10px}
  .facts{grid-template-columns:repeat(2,1fr);row-gap:6px}
  .fact:nth-child(3){border-left:0;padding-left:0}
  .nav{display:none}
}
@media (max-width:620px){
  .wrap{padding:0 20px}
  .hero-title{font-size:clamp(34px,11vw,46px)}
  .hero-cta .btn{flex:1}
  .btn-resume{display:none}
  .sec-note{margin-left:0}
  .citem{padding:18px 0}
  .cover,.featured .cover{height:150px}
  .cover::before{font-size:100px}
}