/* ============================================================
   设计基调：藏青(权威) × 朱砂红(印章) × 石青(立项) —— 中国学术档案
   与首页(funding-search3)、主题词分析页、学科趋势分析页同一套设计令牌
   ============================================================ */
:root{
  --page-width: 1360px;
  --page-gutter: clamp(16px,2.2vw,32px);
  --navy:        #16324A;
  --navy-deep:   #0F2336;
  --ink:         #1C1E24;
  --ink-2:       #565B66;
  --ink-3:       #8A8F9B;
  --paper:       #F7F6F2;
  --card:        #FFFFFF;
  --line:        #E3E0D8;
  --line-strong: #C9C5B9;
  --seal:        #B23A30;
  --seal-deep:   #8F2C24;
  --teal:        #2E6E63;
  --teal-soft:   #E7F0ED;
  --seal-soft:   #F7E9E7;
  --gold:        #A98B5F;
  --radius:      3px;
  --font-serif: "Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:  "Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-sans);
  font-size:15px;line-height:1.65;
  color:var(--ink);background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
button,input,select{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--navy);outline-offset:2px;border-radius:2px;}
::selection{background:var(--navy);color:#fff;}

/* ---------- 顶栏（公共样式：./assets/site-layout.css） ---------- */

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#E9EDF2;
  background:
    radial-gradient(1100px 500px at 88% -10%,rgba(178,58,48,.22),transparent 60%),
    linear-gradient(160deg,var(--navy) 0%,var(--navy-deep) 78%);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(180deg,#000 0%,transparent 85%);
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 85%);
  pointer-events:none;
}
.hero-inner{
  position:relative;max-width:var(--page-width);margin:0 auto;
  padding:clamp(18px,2.2vw,24px) var(--page-gutter) 44px;
  display:flex;align-items:center;justify-content:space-between;gap:20px 48px;flex-wrap:wrap;
}
.hero-copy{min-width:0;}
.hero h2{
  font-family:var(--font-serif);font-weight:900;color:#FFFFFF;
  font-size:clamp(22px,2.6vw,29px);line-height:1.3;letter-spacing:.02em;
  max-width:20em;
}
.hero-lede{margin-top:8px;max-width:46em;color:#AEBCCC;font-size:13.5px;line-height:1.75;}
.hero-lede strong{color:#E8D9B8;font-weight:500;}
.hero-stats{display:flex;margin-left:auto;}
.hero-stat{
  padding:2px clamp(14px,1.6vw,22px);border-left:1px solid rgba(255,255,255,.14);
  text-align:right;white-space:nowrap;
}
.hero-stat:first-child{border-left:none;padding-left:0;}
.hero-stat:last-child{padding-right:0;}
.hero-stat b{
  display:block;font-size:clamp(17px,1.8vw,20px);font-weight:700;color:#fff;
  font-variant-numeric:tabular-nums;line-height:1.3;letter-spacing:.01em;
}
.hero-stat b i{font-style:normal;font-size:.6em;color:#B9C6D4;margin-left:3px;letter-spacing:.08em;}
.hero-stat span{font-size:11px;color:#93A3B5;letter-spacing:.05em;}
.hero-stat b span{font-size:inherit;color:inherit;letter-spacing:inherit;}
@media(max-width:600px){
  .hero-stats{width:100%;margin-left:0;justify-content:space-between;}
  .hero-stat{padding:0 4px;text-align:left;border-left:none;}
  .hero-stat span{font-size:10.5px;letter-spacing:0;}
}

/* ---------- 筛选面板 ---------- */
.panel-wrap{max-width:var(--page-width);margin:-32px auto 0;padding:0 var(--page-gutter);position:relative;z-index:5;}
.search-panel{
  background:var(--card);border:1px solid var(--line);border-top:3px solid var(--navy);
  border-radius:var(--radius);box-shadow:0 14px 40px -18px rgba(15,35,54,.25);
  padding:clamp(20px,3vw,32px);
}
.panel-title{
  display:flex;align-items:baseline;justify-content:space-between;gap:4px 16px;flex-wrap:wrap;
  margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--line);
}
.panel-title h3{font-family:var(--font-serif);font-size:19px;font-weight:700;color:var(--navy);letter-spacing:.05em;}
.panel-title p{font-size:12.5px;color:var(--ink-3);}
.cond-row{
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px 20px;
}
.cond-row .field label{display:block;font-size:13px;font-weight:500;color:var(--ink-2);margin-bottom:6px;}
.cond-row .field select{
  width:132px;height:40px;padding:0 30px 0 12px;
  border:1px solid var(--line-strong);border-radius:var(--radius);background-color:#FDFDFB;
  appearance:none;cursor:pointer;font-variant-numeric:tabular-nums;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23565B66' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.cond-row .field input{
  width:264px;height:40px;padding:0 12px;
  border:1px solid var(--line-strong);border-radius:var(--radius);background-color:#FDFDFB;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.cond-row .field input::placeholder{color:#A9ADB6;}
.cond-row .field select:hover,.cond-row .field input:hover{border-color:#9AA2AF;}
.cond-row .field select:focus,.cond-row .field input:focus{border-color:var(--navy);box-shadow:0 0 0 3px rgba(22,50,74,.12);outline:none;}
.field-hint{margin-top:6px;font-size:12px;color:var(--seal);}
.cond-note{font-size:12px;color:var(--ink-3);padding-bottom:10px;}
.cond-note b{color:var(--seal);font-weight:500;}
.cond-actions{margin-left:auto;display:flex;gap:10px;}

/* ---------- 项目来源切换（与首页、学科趋势分析同一视觉语言：藏青=国家社科，石青=教育部） ---------- */
.source-row{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:18px;padding-bottom:18px;border-bottom:1px solid var(--line);}
.source-label{font-size:13px;font-weight:700;color:var(--navy);}
.source-options{display:flex;flex-wrap:wrap;gap:8px;}
.source-options button{
  border:1px solid var(--line);background:#fff;padding:8px 14px;border-radius:var(--radius);
  font-size:13px;cursor:pointer;display:flex;align-items:center;gap:8px;
  transition:background .15s ease,color .15s ease,border-color .15s ease;
}
.source-options button:hover{border-color:var(--navy);}
.source-options button[aria-pressed="true"]{background:var(--navy);border-color:var(--navy);color:#fff;}
.source-options button[aria-pressed="true"] .source-dot{background:#fff;}
.source-options button:disabled{opacity:.45;cursor:not-allowed;}
.source-options button:disabled:hover{border-color:var(--line);}
.source-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--navy);}
.source-dot.moe{background:var(--teal);}
.btn{
  height:42px;padding:0 30px;border-radius:var(--radius);cursor:pointer;
  font-size:14.5px;font-weight:500;letter-spacing:.18em;text-indent:.18em;
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .1s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--navy);border:1px solid var(--navy);color:#fff;}
.btn-primary:hover{background:#1F4160;border-color:#1F4160;}

/* ---------- 图表区 ---------- */
.analysis{max-width:var(--page-width);margin:34px auto 80px;padding:0 var(--page-gutter);}
.chart-grid{display:grid;grid-template-columns:7fr 6fr;gap:16px;align-items:stretch;}
@media (max-width:1000px){.chart-grid{grid-template-columns:minmax(0,1fr);}}
.chart-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  display:flex;flex-direction:column;min-width:0;
}
.chart-card__head{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:14px 20px 12px;border-bottom:1px solid var(--line);
}
.chart-card__head h4{
  font-family:var(--font-serif);font-size:17px;font-weight:700;color:var(--navy);letter-spacing:.05em;
  display:flex;align-items:center;gap:10px;min-width:0;
}
.chart-card__head h4 .sub{
  font-family:var(--font-sans);font-size:12px;font-weight:500;color:var(--seal);
  background:var(--seal-soft);padding:2px 10px;border-radius:20px;letter-spacing:.03em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:20em;
}
.chart-card__head .meta{font-size:12px;color:var(--ink-3);white-space:nowrap;}
.chart-card__body{position:relative;flex:1;min-height:0;}
.chart-box{width:100%;height:660px;padding:6px 4px;}
.chart-empty{
  position:absolute;inset:6px 4px;display:none;
  align-items:center;justify-content:center;flex-direction:column;gap:8px;
  background:var(--card);color:var(--ink-3);font-size:13px;text-align:center;padding:20px;
}
.chart-empty.show{display:flex;}
.chart-empty .seal-empty{
  width:48px;height:48px;border:1.5px solid var(--line-strong);border-radius:4px;
  display:grid;place-items:center;font-family:var(--font-serif);color:var(--line-strong);font-size:20px;transform:rotate(-4deg);
}

/* ---------- 载入动效（一次性编排） ---------- */
@keyframes riseIn{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:none;}}
.hero-inner > *{animation:riseIn .7s cubic-bezier(.2,.7,.2,1) both;}
.hero-inner > *:nth-child(2){animation-delay:.08s;}
.panel-wrap{animation:riseIn .7s .28s cubic-bezier(.2,.7,.2,1) both;}
.analysis{animation:riseIn .7s .38s cubic-bezier(.2,.7,.2,1) both;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}