/* ===== 袁灿 · 个人主页 · 极简风 ===== */
:root{
  --bg:#faf9f7;
  --white:#ffffff;
  --ink:#181818;
  --soft:#5c5c5c;
  --faint:#9d9d9d;
  --line:#e8e5df;
  --line-strong:#d8d4cc;
  --accent:#5f6b58;
  --accent-ink:#4a5544;
  --thumb:#efede8;
  --serif:'Noto Serif SC','Songti SC','STSong',serif;
  --sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.85;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
::selection{background:var(--accent);color:#fff}

.wrap{max-width:1080px;margin:0 auto;padding:0 32px}

/* ===== 导航 ===== */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(250,249,247,0.9);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1080px;margin:0 auto;padding:0 32px;
  display:flex;align-items:center;justify-content:space-between;height:66px;
}
.logo{font-family:var(--serif);font-weight:700;font-size:1.15rem;letter-spacing:.04em}
.nav-links{display:flex;gap:38px}
.nav-links a{
  position:relative;font-size:.9rem;color:var(--soft);
  padding:4px 0;transition:color .2s ease;letter-spacing:.04em;
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--accent);transition:width .28s cubic-bezier(.4,0,.2,1);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--ink)}
.nav-links a.active::after{width:100%}

/* ===== 首屏 ===== */
.hero{padding:clamp(110px,16vh,180px) 0 96px}
.hero .kicker{
  font-size:.76rem;letter-spacing:.4em;color:var(--faint);
  text-transform:uppercase;margin-bottom:30px;
}
.hero h1{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(3.2rem,9vw,6rem);line-height:1.1;
  letter-spacing:.02em;margin-bottom:28px;
}
.hero .lede{
  max-width:540px;font-size:1.12rem;font-weight:300;color:var(--soft);
  margin-bottom:52px;
}
.hero .actions{display:flex;gap:40px;flex-wrap:wrap}
.link-btn{
  display:inline-flex;align-items:center;gap:9px;
  font-size:.98rem;font-weight:500;color:var(--ink);
  position:relative;padding-bottom:3px;
}
.link-btn::after{
  content:'';position:absolute;left:0;bottom:0;height:1px;width:100%;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform .3s cubic-bezier(.4,0,.2,1);
}
.link-btn:hover::after{transform:scaleX(1)}
.link-btn .arr{transition:transform .25s ease}
.link-btn:hover .arr{transform:translateX(4px)}

/* ===== 区块标题 ===== */
.section{padding:80px 0}
.sec-kicker{font-size:.72rem;letter-spacing:.38em;text-transform:uppercase;color:var(--faint);margin-bottom:20px}
.sec-title{font-family:var(--serif);font-weight:600;font-size:2.2rem;letter-spacing:.02em}

/* ===== 精选作品（首页） ===== */
.featured{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:44px}
.f-card{display:block;overflow:hidden}
.f-card .thumb{
  aspect-ratio:4/3;background:var(--thumb);border-radius:3px;overflow:hidden;
  position:relative;
}
.f-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s cubic-bezier(.2,.7,.2,1);
}
.f-card .thumb .idx{
  position:absolute;top:14px;right:16px;
  font-family:var(--serif);font-size:1rem;color:#fff;
  background:rgba(0,0,0,0.28);padding:2px 10px;border-radius:999px;
}
.f-card:hover .thumb img{transform:scale(1.06)}
.f-card .cap{padding:16px 2px 0}
.f-card .cap .title{font-family:var(--serif);font-weight:600;font-size:1.2rem}
.f-card .cap .meta{font-size:.82rem;color:var(--faint);margin-top:3px}
.f-card:hover .cap .title{color:var(--accent-ink)}

/* ===== 作品集网格（works） ===== */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:40px 32px;margin-top:44px}
.w-card{display:block}
.w-card .thumb{
  aspect-ratio:16/10;background:var(--thumb);border-radius:3px;overflow:hidden;
  position:relative;
}
.w-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s cubic-bezier(.2,.7,.2,1);
}
.w-card .thumb::after{
  content:'';position:absolute;inset:0;background:var(--accent);opacity:0;
  transition:opacity .4s ease;mix-blend-mode:multiply;
}
.w-card .thumb .idx{
  position:absolute;top:14px;left:16px;z-index:1;
  font-size:.85rem;color:#fff;background:rgba(0,0,0,0.28);
  padding:2px 10px;border-radius:999px;
}
.w-card:hover .thumb img{transform:scale(1.05)}
.w-card:hover .thumb::after{opacity:0.14}
.w-card .cap{padding:16px 2px 0;display:flex;align-items:baseline;justify-content:space-between;gap:16px}
.w-card .cap .title{font-family:var(--serif);font-weight:600;font-size:1.25rem}
.w-card .cap .meta{font-size:.82rem;color:var(--faint);white-space:nowrap}
.w-card:hover .cap .title{color:var(--accent-ink)}

/* ===== 关于 ===== */
.about-body{max-width:640px}
.about-body p{color:var(--soft);font-weight:300;margin-bottom:24px;font-size:1.06rem}
.about-body p strong{color:var(--ink);font-weight:500}
.skill-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:48px;margin-top:56px;max-width:760px}
.skill-grid h4{font-size:.78rem;letter-spacing:.24em;text-transform:uppercase;color:var(--faint);font-weight:500;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.skill-grid li{display:flex;align-items:baseline;gap:14px;padding:9px 0;color:var(--soft)}
.skill-grid li::before{content:'';flex:none;width:5px;height:5px;border-radius:50%;background:var(--accent);opacity:.7;transform:translateY(-2px)}

/* ===== 联系 ===== */
.contact-list{max-width:640px;border-top:1px solid var(--line)}
.contact-list .row{display:flex;align-items:baseline;gap:28px;padding:26px 0;border-bottom:1px solid var(--line)}
.contact-list .label{font-size:.8rem;color:var(--faint);min-width:130px;letter-spacing:.08em}
.contact-list .val{font-size:1.08rem;font-weight:500;color:var(--ink)}
.contact-list a.val{transition:color .2s ease}
.contact-list a.val:hover{color:var(--accent)}
.contact-note{max-width:640px;margin-top:36px;color:var(--faint);font-weight:300;font-size:.92rem}

/* ===== 详情页 ===== */
.back{margin:52px 0 8px;display:inline-flex;align-items:center;gap:8px;font-size:.9rem;color:var(--soft);transition:color .2s ease}
.back:hover{color:var(--ink)}
.back .arr{transition:transform .25s ease}
.back:hover .arr{transform:translateX(-4px)}
.work-head{padding:28px 0 36px;border-bottom:1px solid var(--line)}
.work-head h1{font-family:var(--serif);font-weight:600;font-size:clamp(2.1rem,6vw,3.2rem);letter-spacing:.01em;margin-bottom:10px}
.work-head .en{font-family:var(--serif);font-style:italic;font-size:1rem;color:var(--faint);margin-bottom:18px}
.work-head .tags{display:flex;gap:12px;flex-wrap:wrap}
.work-head .tag{font-size:.82rem;color:var(--soft);padding:5px 15px;border:1px solid var(--line-strong);border-radius:999px}
.work-visual{
  margin:36px 0 0;background:var(--thumb);border-radius:4px;overflow:hidden;
}
.work-visual img{width:100%;display:block}
.work-body{max-width:640px;padding:44px 0 0}
.work-body p{color:var(--soft);font-weight:300;margin-bottom:20px;font-size:1.04rem}
.work-body h2{font-family:var(--serif);font-weight:600;font-size:1.05rem;color:var(--ink);margin:44px 0 18px}
.work-body .stack{display:flex;flex-wrap:wrap;gap:10px}
.work-body .stack span{font-size:.88rem;color:var(--ink);border:1px solid var(--line);padding:7px 15px;border-radius:6px}
.prev-next{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:72px;padding-top:26px}
.prev-next a{font-size:.92rem;color:var(--soft);transition:color .2s ease}
.prev-next a:hover{color:var(--ink)}
.prev-next .pn{font-weight:500;color:var(--ink)}

/* ===== 页脚 ===== */
footer{margin-top:96px;padding:40px 0 56px;border-top:1px solid var(--line)}
.foot-inner{max-width:1080px;margin:0 auto;padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.foot-inner .brand{font-family:var(--serif);font-weight:700;font-size:1rem}
.foot-inner .copy{font-size:.8rem;color:var(--faint)}

/* ===== 淡入动画 ===== */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:820px){
  .featured{grid-template-columns:1fr 1fr}
  .grid{grid-template-columns:1fr}
  .skill-grid{grid-template-columns:1fr;gap:36px}
}
@media (max-width:560px){
  .nav-inner{height:58px}
  .nav-links{gap:24px}
  .nav-links a{font-size:.84rem}
  .featured{grid-template-columns:1fr}
  .contact-list .row{flex-direction:column;gap:6px}
  .prev-next{flex-direction:column;gap:12px}
  .foot-inner{flex-direction:column;align-items:flex-start}
  .wrap,.nav-inner,.foot-inner{padding-left:22px;padding-right:22px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
}