:root{
  --bg:#FFFFFF; --bg-soft:#F6FDF9; --ink:#064E3B; --accent:#059669;
  --accent-dark:#047857; --text:#24312c; --muted:#5f6f66; --line:#ddefe6;
  --warn-bg:#fffbeb; --warn-line:#f59e0b;
  --shadow:0 2px 14px rgba(6,78,59,.07);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--text);background:var(--bg);line-height:1.8;font-size:16px}
a{color:var(--accent-dark);text-decoration:none}
a:hover{color:var(--accent);text-decoration:underline}
h1,h2,h3{color:var(--ink);line-height:1.45}
h1{font-size:30px;margin:0 0 16px}
h2{font-size:23px;margin:38px 0 14px;padding-bottom:8px;border-bottom:2px solid var(--line)}
h3{font-size:18px;margin:26px 0 10px}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:24px}
li{margin-bottom:6px}
.container{max-width:1060px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-size:21px;font-weight:800;color:var(--ink);letter-spacing:1px}
.brand:hover{text-decoration:none;color:var(--ink)}
.brand .dot{color:var(--accent)}
.nav{display:flex;gap:26px}
.nav a{color:var(--text);font-weight:600;font-size:15px}
.nav a:hover{text-decoration:none;color:var(--accent)}
.nav a.active{color:var(--accent)}
.hero{background:linear-gradient(180deg,#F6FDF9 0%,#ffffff 100%);padding:70px 0 60px;text-align:center;border-bottom:1px solid var(--line)}
.hero h1{font-size:42px;margin:0 0 10px;letter-spacing:2px}
.hero .slogan{font-size:20px;color:var(--accent-dark);font-weight:700;margin:0 0 14px}
.hero .intro{color:var(--muted);max-width:660px;margin:0 auto 30px;font-size:16px}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:13px 36px;border-radius:10px;font-weight:700;font-size:17px;border:none;cursor:pointer}
.btn:hover{background:var(--accent-dark);color:#fff;text-decoration:none}
.btn-ghost{display:inline-block;border:2px solid var(--accent);color:var(--accent-dark);padding:11px 30px;border-radius:10px;font-weight:700;font-size:16px;margin-left:12px;background:#fff}
.btn-ghost:hover{background:var(--bg-soft);text-decoration:none;color:var(--accent-dark)}
.section{padding:52px 0}
.section-soft{background:var(--bg-soft)}
.section-title{font-size:26px;text-align:center;margin:0 0 8px}
.section-sub{text-align:center;color:var(--muted);margin:0 0 32px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow);transition:transform .15s ease}
a.card:hover{transform:translateY(-3px);text-decoration:none}
.card h3{margin:0 0 10px;font-size:18px}
.card p{color:var(--muted);font-size:14.5px;margin:0 0 12px}
.card .more{font-weight:700;font-size:14px}
.dim-icon{width:46px;height:46px;border-radius:12px;background:var(--bg-soft);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
.post-list{display:flex;flex-direction:column;gap:14px}
.post-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 22px;box-shadow:var(--shadow)}
.post-item h3{margin:0 0 6px;font-size:18px}
.post-item h3 a{color:var(--ink)}
.post-item p{color:var(--muted);font-size:14.5px;margin:0 0 8px}
.post-meta{font-size:13px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap}
.tag{display:inline-block;background:var(--bg-soft);border:1px solid var(--line);color:var(--accent-dark);border-radius:20px;padding:1px 12px;font-size:12.5px;font-weight:600}
.crumb{font-size:13.5px;color:var(--muted);margin:26px 0 6px}
.crumb a{color:var(--muted)}
.article-meta{color:var(--muted);font-size:14px;margin-bottom:8px;display:flex;gap:16px;flex-wrap:wrap}
.article-body{font-size:16.5px}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--bg-soft);color:var(--ink)}
.article-body blockquote{border-left:4px solid var(--accent);background:var(--bg-soft);margin:18px 0;padding:12px 18px;border-radius:0 8px 8px 0}
.related{margin-top:48px;background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:24px 28px}
.related h2{font-size:20px;margin:0 0 14px;border:none;padding:0}
.related ul{margin:0}
.tool-box{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:36px;max-width:760px;margin:0 auto}
.tool-form{display:flex;gap:12px;margin:22px 0 10px}
.tool-form input{flex:1;padding:13px 16px;font-size:17px;border:2px solid var(--line);border-radius:10px;outline:none}
.tool-form input:focus{border-color:var(--accent)}
.tool-examples{font-size:14px;color:var(--muted);margin-bottom:8px}
.tool-examples button{background:var(--bg-soft);border:1px solid var(--line);border-radius:16px;padding:3px 14px;margin:0 6px 6px 0;cursor:pointer;font-size:13.5px;color:var(--accent-dark)}
#tool-result{margin-top:28px;display:none}
.score-wrap{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-bottom:20px}
.score-ring{width:130px;height:130px;border-radius:50%;background:conic-gradient(var(--accent) var(--p,0%),#e6f4ec var(--p,0%));display:flex;align-items:center;justify-content:center;flex:none}
.score-inner{width:104px;height:104px;border-radius:50%;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center}
.score-num{font-size:34px;font-weight:800;color:var(--ink);line-height:1}
.score-label{font-size:12px;color:var(--muted)}
.grade{font-size:20px;font-weight:800;color:var(--ink)}
.price-range{font-size:17px;margin-top:6px}
.price-range strong{color:var(--accent-dark);font-size:22px}
.dim-row{margin:14px 0}
.dim-row .dim-head{display:flex;justify-content:space-between;font-size:15px;margin-bottom:6px}
.dim-row .dim-head b{color:var(--ink)}
.bar{height:10px;background:#e6f4ec;border-radius:6px;overflow:hidden}
.bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),#10b981);border-radius:6px}
.factor-list{list-style:none;padding:0;margin:18px 0 0}
.factor-list li{display:flex;gap:10px;align-items:flex-start;background:var(--bg-soft);border:1px solid var(--line);border-radius:8px;padding:8px 14px;margin-bottom:8px;font-size:14.5px}
.f-tag{flex:none;font-size:12px;font-weight:700;border-radius:12px;padding:2px 10px;margin-top:2px}
.f-good{background:#d1fae5;color:#065f46}
.f-mid{background:#fef3c7;color:#92400e}
.f-bad{background:#fee2e2;color:#991b1b}
.disclaimer{border:2px solid var(--warn-line);background:var(--warn-bg);border-radius:12px;padding:16px 20px;margin:26px 0;font-size:15px;color:#78350f}
.disclaimer strong{display:block;font-size:17px;margin-bottom:4px}
.art-figure{margin:26px 0;padding:0;text-align:center}
.art-figure img{max-width:100%;height:auto;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
.art-figure figcaption{font-size:13.5px;color:var(--muted);margin-top:10px}
.shot-slot{margin:26px 0;padding:22px 26px;border:2px dashed #9fc3b2;border-radius:12px;background:var(--bg-soft);text-align:center}
.shot-slot-title{font-weight:800;color:var(--accent-dark);font-size:16px;margin-bottom:8px}
.shot-slot p{font-size:14px;color:var(--muted);margin:0}
.data-card{margin:26px 0;padding:20px 24px;border:2px solid #94a3b8;border-radius:12px;background:#f8fafc}
.data-card-title{font-weight:800;font-size:16px;margin:0 0 6px}
.data-card-meta{font-size:13.5px;color:#64748b;margin:0 0 12px}
.data-card-meta a{color:#2563eb}
.data-card-rows{display:grid;grid-template-columns:1fr 1fr;gap:4px 24px;margin:0 0 12px}
.data-card-row{display:flex;justify-content:space-between;gap:12px;border-bottom:1px dashed #e2e8f0;padding:7px 0;font-size:14.5px}
.data-card-row span{color:#475569}
.data-card-foot{font-size:13px;color:#94a3b8;margin:0}
@media(max-width:640px){.data-card-rows{grid-template-columns:1fr}}
.rules{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:26px 30px;margin-top:36px}
.rules h2{font-size:21px;margin-top:0}
.err{color:#b91c1c;background:#fef2f2;border:1px solid #fecaca;border-radius:10px;padding:12px 18px;margin-top:16px;display:none}
.site-footer{background:var(--ink);color:#cfe6d8;padding:44px 0 30px;margin-top:70px;font-size:14.5px}
.site-footer a{color:#cfe6d8}
.site-footer h4{color:#fff;margin:0 0 12px;font-size:16px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;margin-bottom:26px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding-top:18px;font-size:13px;color:#9fc3b2;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
@media(max-width:860px){
  .grid4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .grid4,.grid2{grid-template-columns:1fr}
  .hero{padding:48px 0 40px}
  .hero h1{font-size:31px}
  .nav{gap:14px}
  .nav a{font-size:14px}
  .tool-form{flex-direction:column}
  .tool-box{padding:24px 18px}
  .footer-grid{grid-template-columns:1fr}
  h1{font-size:25px}
}