/* home.css — 首页档案研究所视觉（基于 Kimi 提案，字体换回系统字体） */
/* 在 site.css 之后加载，覆盖首页专用样式 */

:root{
  --paper:#f5eedb;
  --paper-hi:#faf5e8;
  --ink:#26221a;
  --ink-soft:#4a4234;
  --brown:#7a6244;
  --line:#d9cba9;
  --seal:#8c2f23;
  --mono:"Courier New",ui-monospace,monospace;
  --serif-en:Georgia,"Times New Roman",serif;
  --serif-cn:"Songti SC","Noto Serif SC",serif;
}

body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--serif-en);
  font-size:18px;
  -webkit-font-smoothing:antialiased;
}
/* 纸纹噪点 */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:50;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity:.05;mix-blend-mode:multiply;
}

.wrap{max-width:1180px;margin:0 auto;padding:0 40px}

/* ── 导航 ── */
.topbar{
  border-bottom:1px solid var(--line);
  background:rgba(245,238,219,.92);
  position:sticky;top:0;z-index:40;backdrop-filter:blur(6px);
  padding:0 0 0 0;
  display:block;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:10px 28px;min-height:64px;padding:10px 0;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--ink);min-width:0}
.brand img{width:44px;height:44px;flex:none;filter:drop-shadow(0 2px 3px rgba(0,0,0,.18))}
.brand-name{font-family:var(--serif-cn);font-weight:700;font-size:16px;letter-spacing:.04em;white-space:nowrap;display:block}
.brand-sub{font-family:var(--serif-en);font-size:9px;letter-spacing:.18em;color:var(--brown);margin-top:2px;white-space:nowrap;display:block}
.topbar nav{display:flex;align-items:center;gap:8px 26px;font-family:var(--mono);font-size:12px;letter-spacing:.18em;flex-wrap:wrap;text-transform:uppercase}
.topbar nav a{color:var(--ink-soft);text-decoration:none;position:relative;padding:4px 0;white-space:nowrap;transition:color .3s ease}
.topbar nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--seal);transition:width .4s ease}
.topbar nav a:hover{color:var(--seal)}
.topbar nav a:hover::after{width:100%}
.topbar nav .lang{font-family:var(--mono);font-size:12px;color:var(--brown);letter-spacing:.06em;text-transform:none}
.topbar nav .lang a{color:var(--brown)}
.topbar nav .lang a.active{color:var(--seal);border-bottom:1px solid var(--seal)}

/* ── Hero ── */
.hero{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;padding:72px 0 60px}
.kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:.22em;color:var(--brown);
  display:flex;align-items:center;gap:12px;margin-bottom:30px;flex-wrap:wrap;
}
.kicker::before{content:"";width:34px;height:1px;background:var(--brown);flex:none}
.kicker .dot{color:var(--seal)}
.display{
  font-family:var(--serif-en);font-weight:700;
  font-size:clamp(1.8rem,3.2vw,2.6rem);
  line-height:1.15;letter-spacing:-.01em;
  margin:0;max-width:16ch;
  text-wrap:balance;
}
.lede{margin-top:20px;font-size:16px;line-height:1.65;color:var(--ink-soft);max-width:30em}
.cta-row{display:flex;gap:16px;margin-top:38px;flex-wrap:wrap}
.btn{
  display:inline-block;padding:13px 30px;border-radius:999px;font-size:16px;letter-spacing:.04em;
  text-decoration:none;transition:all .4s ease;border:1px solid var(--ink);white-space:nowrap;
  font-family:var(--serif-en);font-weight:600;
}
.btn-solid{background:var(--ink);color:var(--paper)}
.btn-solid:hover{background:var(--seal);border-color:var(--seal)}
.btn-line{color:var(--ink);background:transparent}
.btn-line:hover{border-color:var(--seal);color:var(--seal)}

.notice-board{
  margin-top:52px;display:grid;grid-template-columns:1fr 1fr;gap:0;
  border:1px solid var(--line);background:var(--paper-hi);position:relative;
}
.notice-board::before,.notice-board::after{
  content:"";position:absolute;width:7px;height:7px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%,#b09a72,#6b5738);
  top:9px;box-shadow:0 1px 1px rgba(0,0,0,.25);
}
.notice-board::before{left:9px}
.notice-board::after{right:9px}
.notice-cell{padding:20px 26px}
.notice-cell + .notice-cell{border-left:1px dashed var(--line)}
.notice-label{font-family:var(--mono);font-size:10.5px;letter-spacing:.26em;color:var(--brown);margin-bottom:8px}
.notice-value{font-size:16px}
.notice-value em{font-style:normal;color:var(--seal)}

.hero-fig{position:relative;display:flex;align-items:center;justify-content:center}
.hero-fig img{width:auto;height:auto;max-width:100%;max-height:72vh;display:block;border-radius:4px}
.hero-fig .fig-tag{
  position:absolute;bottom:-14px;right:18px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--brown);
  background:var(--paper-hi);border:1px solid var(--line);padding:7px 12px;
  transform:rotate(-1.2deg);max-width:86%;
}

/* ── Section 通用 ── */
section{padding:84px 0 0}
.sec-head{display:flex;align-items:baseline;gap:14px 22px;border-bottom:1px solid var(--ink);padding-bottom:16px;margin-bottom:14px;flex-wrap:wrap}
.sec-room{font-family:var(--mono);font-size:11.5px;letter-spacing:.24em;color:var(--seal);white-space:nowrap}
.sec-title{font-family:var(--serif-cn);font-size:30px;font-weight:900;letter-spacing:.04em;text-wrap:balance}
.sec-title:lang(en){font-family:var(--serif-en);font-weight:700}
.sec-note{margin-left:auto;font-size:15px;color:var(--brown);font-style:italic}
.sec-sub{padding:14px 0 34px;color:var(--ink-soft);font-size:17px}

/* ── 标本卡（文章列表） ── */
.shelf{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.card{
  position:relative;display:block;text-decoration:none;color:var(--ink);
  background:var(--paper-hi);border:1px solid var(--line);
  padding:34px 34px 26px 40px;
  transition:transform .42s ease,box-shadow .42s ease,border-color .42s ease;
  container-type:inline-size;
}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 34px -18px rgba(60,45,20,.4);border-color:#c4b28c}
.card::before{
  content:"";position:absolute;left:16px;top:50%;transform:translateY(-50%);
  width:11px;height:11px;border-radius:50%;
  background:var(--paper);border:1px solid var(--line);
  box-shadow:inset 0 1px 2px rgba(0,0,0,.18);
}
/* 容器查询：窄卡片自动收紧 padding 和字号，保持卡片高度均衡 */
@container (max-width: 520px){
  .card{padding:26px 26px 22px 34px}
  .card h3{font-size:19px;line-height:1.35}
  .card-meta-top{font-size:10px}
}
.card-meta-top{
  display:flex;justify-content:space-between;align-items:baseline;gap:14px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;color:var(--brown);
  border-bottom:1px dashed var(--line);padding-bottom:12px;margin-bottom:18px;flex-wrap:wrap;
}
.acc-no{color:var(--seal);font-weight:500}
.card h3{font-family:var(--serif-en);font-size:22px;font-weight:700;line-height:1.25;transition:color .4s ease;margin:0;text-wrap:balance}
.card:hover h3{color:var(--seal)}
.card p{margin-top:12px;font-size:15px;line-height:1.65;color:var(--ink-soft)}
.card-meta-bot{
  display:flex;gap:10px 18px;margin-top:20px;padding-top:14px;border-top:1px dashed var(--line);
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--brown);flex-wrap:wrap;
}

/* ── Exhibit 展品框 ── */
.frame{border:1px solid var(--line);background:var(--paper-hi)}
.artifact-strip{
  background:var(--paper);padding:56px 40px 52px;text-align:center;
  font-family:"Helvetica Neue",Arial,sans-serif;position:relative;
  border-bottom:1px dashed var(--line);
}
.as-kicker{font-family:var(--mono);font-size:10px;letter-spacing:.34em;color:var(--brown);margin-bottom:22px}
.as-title{
  font-family:var(--serif-cn);font-size:clamp(2rem,5vw,3.5rem);font-weight:900;letter-spacing:.04em;line-height:1;
  color:var(--ink);
}
.as-title .as-en{font-family:var(--serif-en);font-weight:700;font-size:.6em;color:var(--brown)}
.as-tag{margin-top:20px;font-size:16px;font-weight:300;color:var(--ink-soft);letter-spacing:.02em;line-height:1.6}
.as-cta{margin-top:30px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.as-cta .ls-btn{border-color:var(--line);color:var(--ink-soft)}
.as-cta .ls-btn:hover{border-color:var(--seal);color:var(--seal)}
.spec-label{
  display:flex;align-items:center;gap:12px 26px;flex-wrap:wrap;
  padding:22px 34px 22px 52px;position:relative;
  border-bottom:1px dashed var(--line);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;color:var(--ink-soft);
}
.spec-label::before{
  content:"";position:absolute;left:20px;top:50%;transform:translateY(-50%);
  width:12px;height:12px;border-radius:50%;background:var(--paper);
  border:1px solid var(--line);box-shadow:inset 0 1px 2px rgba(0,0,0,.18);
}
.spec-label .no{color:var(--seal);font-weight:500}
.spec-label .sep{color:var(--line)}
.spec-label .spec-author{color:var(--seal);font-style:italic;letter-spacing:.12em}
.spec-label .spec-author a{color:inherit;text-decoration:none;border-bottom:1px dashed transparent;transition:border-color .3s ease}
.spec-label .spec-author a:hover{border-bottom-color:var(--seal)}
.launch-strip{
  background:#070b18;color:#e8ecf5;padding:64px 40px 58px;text-align:center;
  font-family:"Helvetica Neue",Arial,sans-serif;position:relative;overflow:hidden;
}
.launch-strip::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse 60% 80% at 50% 110%,rgba(70,120,220,.16),transparent 70%);
  pointer-events:none;
}
.ls-kicker{font-family:var(--mono);font-size:10px;letter-spacing:.34em;color:#5f83c4;margin-bottom:22px}
.ls-title{
  font-size:clamp(2rem,5.6vw,4.2rem);font-weight:800;letter-spacing:-.02em;line-height:1;
  background:linear-gradient(90deg,#fff 45%,#79a9f5 55%);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.ls-title sup{font-size:.28em;vertical-align:super;color:#79a9f5;-webkit-text-fill-color:#79a9f5}
.ls-tag{margin-top:20px;font-size:17px;font-weight:300;color:#aeb9cf;letter-spacing:.02em}
.ls-tag b{color:#79a9f5;font-weight:500}
.ls-cta{margin-top:30px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.ls-btn{font-family:var(--mono);font-size:11px;letter-spacing:.2em;padding:11px 22px;border:1px solid #33415e;color:#c6d2e6;text-decoration:none;transition:all .4s ease;white-space:nowrap}
.ls-btn:hover{border-color:#79a9f5;color:#79a9f5}
.curator-note{padding:30px 34px 30px 52px;position:relative;font-size:17px;line-height:1.75;color:var(--ink-soft)}
.curator-note::before{content:"";position:absolute;left:34px;top:32px;bottom:32px;width:2px;background:var(--seal);opacity:.75}
.curator-note .cn-label{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.3em;color:var(--seal);
  display:block;margin-bottom:10px;
}
.curator-note p{padding-left:22px;margin:0}

/* 手写红笔划线：滚动到视口时触发 */
.cn-scrawl{
  position:relative;color:inherit;font-style:normal;
  background-image:linear-gradient(90deg,var(--seal),var(--seal));
  background-repeat:no-repeat;
  background-size:0% 1.5px;
  background-position:0 92%;
  transition:background-size 1.1s cubic-bezier(.6,.05,.3,1) .2s;
  padding-bottom:1px;
}
.cn-scrawl.in{background-size:100% 1.5px}

/* 红章：滚动到视口时盖下 */
.cn-seal{
  display:inline-block;margin-left:14px;vertical-align:middle;
  width:46px;height:46px;color:var(--seal);
  opacity:0;transform:scale(2.2) rotate(-18deg);
  transform-origin:center;
  transition:opacity .32s ease .65s,transform .42s cubic-bezier(.34,1.4,.64,1) .65s;
}
.cn-seal.in{opacity:.85;transform:scale(1) rotate(-8deg)}
.cn-seal svg{width:100%;height:100%;display:block;filter:drop-shadow(0 1px 1px rgba(140,47,35,.3))}
@media (prefers-reduced-motion: reduce){
  .cn-scrawl{transition:none;background-size:100% 1.5px}
  .cn-seal{transition:none;opacity:.85;transform:scale(1) rotate(-8deg)}
}

/* ── 投稿 banner ── */
.submit-banner{
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  border:1px solid var(--line);background:var(--paper-hi);
  padding:36px 40px;border-left:4px solid var(--seal);
}
.submit-banner .sec-room{display:block;margin-bottom:10px}
.submit-title{font-family:var(--serif-en);font-size:clamp(1.5rem,3vw,2rem);font-weight:700;margin:0 0 10px;letter-spacing:-.01em}
.submit-desc{font-size:16px;color:var(--ink-soft);line-height:1.65;margin:0;max-width:36em}

/* ── Institute section ── */
.institute-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.institute-card{
  background:var(--paper-hi);border:1px solid var(--line);padding:28px;
}
.institute-card h3{font-family:var(--serif-en);font-size:20px;font-weight:700;margin:0 0 12px}
.institute-card p{font-size:15px;line-height:1.7;color:var(--ink-soft);margin:0}

/* ── Footer ── */
footer{margin-top:90px;border-top:1px solid var(--ink);padding:44px 0 56px}
.foot-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.foot-brand{display:flex;align-items:center;gap:14px}
.foot-brand img{width:38px;height:38px;flex:none}
.foot-motto{font-size:15px;color:var(--ink-soft);line-height:1.6}
.foot-motto .cn{font-family:var(--serif-cn);color:var(--brown);font-size:13px;display:block;margin-top:4px}
.foot-links{display:flex;gap:20px;font-family:var(--mono);font-size:12px;letter-spacing:.1em}
.foot-links a{color:var(--brown);text-decoration:none;transition:color .3s}
.foot-links a:hover{color:var(--seal)}

/* ── Scroll reveal ── */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{transition:none !important}
}

/* ── 响应式 ── */
@media (max-width:900px){
  .wrap{padding:0 22px}
  .hero{grid-template-columns:1fr;padding-top:52px;gap:44px}
  .shelf{grid-template-columns:1fr}
  .institute-grid{grid-template-columns:1fr}
  .submit-banner{flex-direction:column;align-items:flex-start}
  .topbar-inner{min-height:auto}
}
@media (max-width:640px){
  .brand-name{font-size:17px}
  .brand-sub{font-size:9px;letter-spacing:.18em}
  .topbar nav{font-size:11px;gap:6px 18px}
  .display{font-size:clamp(2rem,9vw,2.6rem)}
  .kicker{font-size:11px;letter-spacing:.16em}
  .lede{font-size:16px}
  .sec-title{font-size:24px}
  .card{padding:26px 22px 22px 34px}
  .card h3{font-size:19px}
  .spec-label{padding:18px 22px 18px 46px}
  .spec-label::before{left:16px}
  .curator-note{padding:24px 22px 24px 44px}
  .curator-note::before{left:24px}
  .curator-note p{padding-left:20px}
  .notice-board{grid-template-columns:1fr}
  .notice-cell + .notice-cell{border-left:none;border-top:1px dashed var(--line)}
}