/* 标准化数据指标优化步骤 · 样式（自包含，已内联设计变量，可直接用） */

:root{
  --bg:#f5f6f8;--surface:#ffffff;--surface-2:#f0f2f5;--border:#e2e5ea;--border-2:#d6dae1;
  --text:#1a1d23;--text-2:#5b6270;--text-3:#8b92a0;
  --blue:#1f5fd6;--blue-l:#eaf1fd;--blue-d:#123a8c;
  --green:#1c8a4a;--green-l:#e8f6ee;--green-d:#0f5c31;
  --amber:#b3760f;--amber-l:#fdf3e0;--amber-d:#7a4f08;
  --red:#c23a3a;--red-l:#fbe9e9;--red-d:#7f2323;
  --purple:#6a4fc0;--purple-l:#efeaf9;
  --radius-s:6px;--radius-m:10px;--radius-l:16px;
  --shadow-toolbar:0 4px 20px rgba(20,24,32,0.14);
  font-family:-apple-system,'PingFang SC','Microsoft YaHei',Segoe UI,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);}
body{font-size:15px;line-height:1.7;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.35;}
p{margin:0;}
a{color:var(--blue);text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
img{max-width:100%;display:block;}

.container{max-width:1120px;margin:0 auto;padding:0 24px;}
.section{padding:64px 0;}
.section-alt{background:var(--surface);}
.section-head{max-width:720px;margin-bottom:36px;}
.section-tag{display:inline-block;font-size:12px;font-weight:600;color:var(--blue);background:var(--blue-l);padding:4px 10px;border-radius:999px;margin-bottom:12px;letter-spacing:.02em;}
.section-title{font-size:26px;margin-bottom:10px;}
.section-desc{font-size:15px;color:var(--text-2);}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:16px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media(max-width:820px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}}

.card{background:var(--surface);border:0.5px solid var(--border);border-radius:var(--radius-l);padding:22px;}
.card h3{font-size:15px;margin-bottom:8px;}
.card p{font-size:13.5px;color:var(--text-2);}

.evidence-strip{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px;}
.evidence-tag{font-size:11px;padding:2px 8px;border-radius:6px;background:var(--surface-2);color:var(--text-2);border:0.5px solid var(--border-2);}

/* ---------- Stepper demo ---------- */
.demo-shell{background:var(--surface);border:0.5px solid var(--border);border-radius:var(--radius-l);overflow:hidden;}
.demo-stepper{display:flex;overflow-x:auto;border-bottom:0.5px solid var(--border);background:var(--surface-2);}
.step-btn{flex:1;min-width:120px;display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 8px;border:none;background:none;color:var(--text-3);font-size:12px;border-bottom:2px solid transparent;}
.step-btn .dot{width:22px;height:22px;border-radius:50%;background:var(--border-2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;}
.step-btn.active{color:var(--blue-d);border-bottom-color:var(--blue);}
.step-btn.active .dot{background:var(--blue);}
.step-btn.done .dot{background:var(--green);}
.step-panel{padding:28px 26px;display:none;}
.step-panel.active{display:block;}
.panel-tag{display:inline-block;font-size:11px;font-weight:700;color:var(--purple);background:var(--purple-l);padding:3px 9px;border-radius:999px;margin-bottom:10px;}
.panel-title{font-size:19px;margin-bottom:6px;}
.panel-desc{font-size:13.5px;color:var(--text-2);margin-bottom:20px;}
.demo-nav{display:flex;justify-content:space-between;padding:14px 26px;border-top:0.5px solid var(--border);background:var(--surface-2);}
.nav-btn{padding:8px 16px;border-radius:var(--radius-s);border:0.5px solid var(--border-2);background:var(--surface);font-size:13px;display:flex;align-items:center;gap:6px;}
.nav-btn.primary{background:var(--blue);color:#fff;border-color:var(--blue);}
.nav-btn:disabled{opacity:.4;cursor:not-allowed;}

/* ---------- Indicator tree ---------- */
.tree-cols{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
@media(max-width:820px){.tree-cols{grid-template-columns:1fr;}}
.tree-col-label{font-size:12px;color:var(--text-3);margin-bottom:10px;font-weight:600;}
.tnode{border:0.5px solid var(--border);border-radius:var(--radius-m);margin-bottom:8px;overflow:hidden;}
.tnode-head{width:100%;display:flex;align-items:center;gap:10px;padding:10px 12px;background:var(--surface);border:none;text-align:left;font-size:13.5px;}
.tnode-key{flex:none;width:26px;height:26px;border-radius:6px;background:var(--blue-l);color:var(--blue-d);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;}
.tnode-weight{margin-left:auto;font-size:11px;color:var(--text-3);}
.tnode-chev{transition:transform .15s;color:var(--text-3);}
.tnode-chev.open{transform:rotate(90deg);}
.tnode-children{padding:6px 12px 10px 48px;background:var(--surface-2);display:none;}
.tnode-children.open{display:block;}
.snode-head{display:flex;align-items:center;gap:8px;padding:6px 0;font-size:12.5px;cursor:pointer;}
.snode-key{flex:none;width:34px;font-weight:700;color:var(--text-2);font-size:11px;}
.snode-w{margin-left:auto;font-size:11px;color:var(--text-3);}
.inode-list{padding:2px 0 8px 42px;display:none;}
.inode-list.open{display:block;}
.inode-row{font-size:12px;color:var(--text-2);padding:4px 0;display:flex;gap:6px;}
.inode-w{flex:none;color:var(--text-3);}

/* ---------- Delphi ---------- */
.delphi-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:20px;}
@media(max-width:820px){.delphi-layout{grid-template-columns:1fr;}}
.round-toggle{display:inline-flex;border:0.5px solid var(--border-2);border-radius:999px;overflow:hidden;margin-bottom:16px;}
.round-toggle button{padding:6px 16px;border:none;background:none;font-size:12.5px;color:var(--text-2);}
.round-toggle button.active{background:var(--blue);color:#fff;}
.expert-row{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:0.5px solid var(--border);}
.expert-info b{font-size:13px;}
.expert-info span{font-size:11.5px;color:var(--text-3);display:block;}
.score-slider{display:flex;gap:4px;margin-left:auto;}
.score-slider button{width:26px;height:26px;border-radius:6px;border:0.5px solid var(--border-2);background:var(--surface);font-size:12px;}
.score-slider button.sel{background:var(--blue);color:#fff;border-color:var(--blue);}
.coef-card{background:var(--surface-2);border-radius:var(--radius-m);padding:14px;margin-bottom:10px;}
.coef-card span{font-size:12px;color:var(--text-2);display:block;margin-bottom:4px;}
.coef-card strong{font-size:22px;}
.coef-card small{font-size:11.5px;color:var(--text-3);display:block;margin-top:4px;}
.coef-card.pass strong{color:var(--green-d);}
.coef-card.fail strong{color:var(--red-d);}

/* ---------- AHP ---------- */
.ahp-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:20px;}
@media(max-width:820px){.ahp-layout{grid-template-columns:1fr;}}
.ahp-table{width:100%;border-collapse:collapse;font-size:12.5px;}
.ahp-table th,.ahp-table td{border:0.5px solid var(--border);padding:8px;text-align:center;}
.ahp-table th{background:var(--surface-2);font-weight:600;}
.ahp-table input{width:52px;text-align:center;border:0.5px solid var(--border-2);border-radius:4px;padding:4px;font-size:12px;}
.ahp-diag{color:var(--text-3);}
.weight-row{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:12.5px;}
.weight-row span{flex:none;width:120px;}
.weight-bar-track{flex:1;height:8px;background:var(--surface-2);border-radius:4px;overflow:hidden;}
.weight-bar-fill{height:100%;background:var(--blue);border-radius:4px;}
.cr-badge{margin-top:14px;padding:10px 12px;border-radius:var(--radius-s);font-size:12.5px;font-weight:600;}
.cr-badge.pass{background:var(--green-l);color:var(--green-d);}
.cr-badge.fail{background:var(--red-l);color:var(--red-d);}

/* ---------- Scoring ---------- */
.dual-track{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px;}
@media(max-width:820px){.dual-track{grid-template-columns:1fr;}}
.track-card{border-radius:var(--radius-m);padding:16px;}
.track-card.obj{background:var(--blue-l);}
.track-card.subj{background:var(--green-l);}
.track-card h4{font-size:13px;margin-bottom:6px;}
.track-card p{font-size:12px;color:var(--text-2);}
.score-input-row{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:0.5px solid var(--border);font-size:13px;}
.score-input-row span{flex:1;}
.score-input-row input[type=range]{flex:1.4;}
.score-input-row select{border:0.5px solid var(--border-2);border-radius:6px;padding:4px 8px;font-size:12px;}
.score-badge{width:40px;text-align:right;font-weight:700;}
.score-badge.good{color:var(--green-d);}
.score-badge.mid{color:var(--amber-d);}
.score-badge.low{color:var(--red-d);}
.score-summary{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px;}
.chip{font-size:12px;padding:5px 10px;border-radius:999px;}
.chip.good{background:var(--green-l);color:var(--green-d);}
.chip.mid{background:var(--amber-l);color:var(--amber-d);}
.chip.low{background:var(--red-l);color:var(--red-d);}
.total-score-bar{display:flex;gap:16px;margin-bottom:20px;}
.total-score-card{flex:1;background:var(--surface-2);border-radius:var(--radius-m);padding:16px;text-align:center;}
.total-score-card strong{font-size:28px;display:block;}

/* ---------- Case compare ---------- */
.case-toggle{display:flex;gap:10px;margin-bottom:20px;}
.case-toggle button{flex:1;padding:12px;border-radius:var(--radius-m);border:0.5px solid var(--border-2);background:var(--surface);text-align:left;font-size:13px;}
.case-toggle button.active{border-color:var(--blue);background:var(--blue-l);}
.case-toggle button b{display:block;font-size:13.5px;margin-bottom:2px;}
.case-toggle button small{color:var(--text-3);font-size:11px;}
.case-detail{display:grid;grid-template-columns:1fr 1.3fr;gap:20px;}
@media(max-width:820px){.case-detail{grid-template-columns:1fr;}}
.case-score-card{background:var(--surface-2);border-radius:var(--radius-m);padding:16px;margin-bottom:10px;}
.case-score-card span{font-size:12px;color:var(--text-2);}
.case-score-card strong{font-size:26px;display:block;}
.case-note{font-size:12.5px;color:var(--text-2);margin-top:6px;}
.level1-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px;}
.level1-cell{background:var(--surface);border:0.5px solid var(--border);border-radius:var(--radius-s);padding:8px;text-align:center;}
.level1-cell b{display:block;font-size:15px;}
.level1-cell span{font-size:10.5px;color:var(--text-3);}
.weakness-card{background:var(--red-l);border-radius:var(--radius-m);padding:14px;margin-top:14px;}
.weakness-card h4{font-size:13px;color:var(--red-d);margin-bottom:6px;}
.weakness-card p{font-size:12.5px;color:var(--text-2);}

/* ---------- Suggestions ---------- */
.issue-picker{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px;}
.issue-picker button{font-size:12px;padding:6px 12px;border-radius:999px;border:0.5px solid var(--border-2);background:var(--surface);}
.issue-picker button.active{background:var(--blue);color:#fff;border-color:var(--blue);}
.suggestion-card{background:var(--surface-2);border-radius:var(--radius-l);padding:20px;}
.suggestion-priority{font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;}
.suggestion-priority.high{background:var(--red-l);color:var(--red-d);}
.suggestion-priority.mid{background:var(--amber-l);color:var(--amber-d);}
.suggestion-priority.low{background:var(--green-l);color:var(--green-d);}
.done-banner{margin-top:20px;background:var(--purple-l);border-radius:var(--radius-m);padding:12px 16px;font-size:12.5px;color:var(--purple);display:flex;gap:10px;align-items:center;}

.source-note{background:var(--surface-2);border-radius:var(--radius-m);padding:14px 16px;font-size:12.5px;color:var(--text-2);margin-top:16px;}