:root{
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --block:#EFF3FA;
  --primary:#4278D9;
  --primary-hover:#3364BD;
  --primary-light:#D4E1F7;
  --accent:#E67748;
  --title:#1A2436;
  --text:#4A5568;
  --muted:#808BA3;
  --placeholder:#B0B9CC;
  --success:#38A878;
  --warning:#F2A950;
  --error:#E15454;
  --info:#5997E9;
  --shadow:0 16px 42px rgba(66,120,217,.12);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{color:inherit;text-decoration:none}
.container{width:min(1440px,calc(100% - 32px));margin:auto}
.topline{background:var(--block);color:var(--muted);font-size:13px;border-bottom:1px solid var(--primary-light)}
.topline .container{display:flex;gap:18px;justify-content:space-between;align-items:center;min-height:34px}
.topline .container span:first-child{flex:1}
.nav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--primary-light);box-shadow:0 8px 24px rgba(26,36,54,.06)}
.nav .container{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:62px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.5px;font-size:32px;line-height:34px;color:var(--primary)}
.logo{width:34px;height:34px;border-radius:10px;object-fit:contain;display:block}
.links{display:flex;gap:8px;flex-wrap:wrap}
.links a{padding:9px 13px;border-radius:999px;color:var(--primary);font-size:14px}
.links a.active,.links a:hover{background:var(--primary);color:#fff}
.hero{padding:64px 0 34px;background:var(--bg)}
.hero-grid{display:block}
.hero-card,.panel{background:var(--card);border:1px solid var(--primary-light);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{padding:36px;position:relative;overflow:hidden;text-align:center}
.hero-card:before{content:"";position:absolute;inset:-90px -90px auto auto;width:260px;height:260px;border-radius:50%;background:rgba(66,120,217,.13);filter:blur(8px)}
h1{font-size:clamp(30px,5vw,54px);line-height:1.12;margin:12px 0 16px;color:var(--title)}
h2{font-size:26px;margin:0 0 18px;color:var(--title)}
h3{font-size:18px;margin:0 0 10px;color:var(--title)}
.lead{font-size:17px;color:var(--text);max-width:980px;margin-left:auto;margin-right:auto}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.btn{border:0;border-radius:12px;padding:12px 18px;font-weight:700;cursor:pointer;color:#fff;background:var(--primary);transition:.18s;box-shadow:0 10px 22px rgba(66,120,217,.22)}
.btn:hover{transform:translateY(-1px);background:var(--primary-hover)}
.btn.secondary{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(230,119,72,.18);border:1px solid rgba(230,119,72,.35)}
.section{padding:34px 0}
.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;align-items:start}
.panel{padding:22px}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field-hint{font-size:12px;color:#808BA3;margin-top:-3px}
label{color:var(--title);font-size:14px;font-weight:600}
input,select{width:100%;border:1px solid var(--primary-light);background:#fff;color:var(--title);border-radius:12px;padding:12px 12px;outline:none}
input::placeholder{color:var(--placeholder)}
input:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(66,120,217,.16)}
.hint{font-size:12px;color:var(--muted)}
.error{display:none;margin-top:12px;color:var(--error);background:rgba(225,84,84,.1);border:1px solid rgba(225,84,84,.25);border-radius:12px;padding:10px 12px}
.results{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.result{border:1px solid var(--primary-light);background:var(--block);border-radius:14px;padding:15px;min-height:92px}
.result span{display:block;color:var(--muted);font-size:13px}
.result b{font-size:22px;color:var(--title)}
.result.good b{color:var(--success)}
.result.warn b{color:var(--warning)}
.config-note{margin-top:14px;padding:16px;border-radius:14px;background:rgba(89,151,233,.1);border:1px solid var(--primary-light);color:var(--text)}
.table-wrap{overflow:auto;border:1px solid var(--primary-light);border-radius:16px;background:var(--card)}
.data-table{width:100%;border-collapse:collapse;min-width:720px}
.data-table th,.data-table td{padding:11px 12px;border-bottom:1px solid #E6ECF5;text-align:left;vertical-align:top}
.data-table th{position:sticky;top:0;background:var(--primary);color:#fff;z-index:1}
.data-table tr:nth-child(even) td{background:var(--block)}
.data-table td{color:var(--text);font-size:14px}
.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.tab{border:1px solid var(--primary-light);background:var(--card);color:var(--primary);border-radius:999px;padding:9px 13px;cursor:pointer}
.tab.active,.tab:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.info-card{padding:18px;border-radius:16px;background:var(--card);border:1px solid var(--primary-light);box-shadow:var(--shadow)}
.info-card p{color:var(--text);margin:0}
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.summary{color:var(--text)}
.brand-grid{display:grid;grid-template-columns:1fr;gap:18px}
.brand-card{display:grid;grid-template-columns:280px 1fr;gap:18px;align-items:start;padding:18px;border-radius:16px;background:var(--card);border:1px solid var(--primary-light);box-shadow:var(--shadow)}
.brand-img{border:2px solid var(--primary-light);border-radius:12px;padding:8px;background:#fff;display:flex;align-items:center;justify-content:center;min-height:90px}
.brand-img img{max-width:100%;max-height:100px;width:auto;height:auto;border-radius:8px;object-fit:contain;display:block}
.brand-body{display:flex;flex-direction:column;gap:10px}
.brand-body .recommend-text{font-size:13px}
.footer{margin-top:40px;padding:30px 0;border-top:1px solid var(--primary-light);background:#fff;color:var(--muted)}
.footer-grid{display:grid;grid-template-columns:1.5fr .5fr;gap:20px}
.footer strong{color:var(--title)}
.small{font-size:13px;color:var(--muted)}
.home-specs .data-table th,.home-specs .data-table td{text-align:center}
.recommend-title{margin:0 0 8px;color:var(--title)}
.recommend-text{margin:0;text-indent:2em;font-size:14px}
.conclusion{color:var(--primary);font-weight:700;font-size:17px}
.footer p{text-indent:2em}
.footer-qrcode{width:120px;height:auto;margin-top:6px;border-radius:8px}
.qrcode-group{display:flex;gap:100px;flex-wrap:nowrap;align-items:flex-start}
.table-image{display:block;max-width:220px;width:100%;height:auto;margin:0 auto;border-radius:12px}
.card-flow{display:grid;grid-template-columns:1fr;gap:14px}
.flow-card{padding:18px;border-radius:16px;background:var(--card);border:1px solid var(--primary-light);box-shadow:var(--shadow)}
.flow-card h4{font-size:16px;margin:0 0 12px;color:var(--title)}
.flow-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.flow-4col{grid-template-columns:repeat(4,1fr)}
.flow-col{padding:12px;border-radius:12px;background:var(--block)}
.flow-col strong{display:block;font-size:13px;color:var(--primary);margin-bottom:6px}
.flow-col p{margin:0;font-size:14px;color:var(--text);line-height:1.6}
.flow-body{padding:12px;border-radius:12px;background:var(--block)}
.match-type{font-size:13px;color:var(--primary);font-weight:600;margin:0 0 8px}
.flow-body .recommend-text{text-indent:0}
@media (max-width:900px){
  .hero-grid,.tool-grid,.footer-grid{grid-template-columns:1fr}
  .results{grid-template-columns:repeat(2,1fr)}
  .cards,.compare-grid{grid-template-columns:1fr}
  .nav .container{align-items:flex-start;flex-direction:column;padding:12px 0}
  .links{width:100%;overflow:auto;flex-wrap:nowrap;padding-bottom:4px}
  .brand-card{grid-template-columns:1fr}
  .flow-4col{grid-template-columns:repeat(2,1fr)}
  .flow-row{grid-template-columns:1fr}
  .topline .container{flex-direction:column;align-items:flex-end;gap:2px;padding:6px 0}
}
@media (max-width:560px){
  .container{width:min(100% - 22px,1440px)}
  .hero{padding-top:34px}
  .hero-card,.panel{padding:18px}
  .form-grid,.results{grid-template-columns:1fr}
  h1{font-size:30px}
  .topline{font-size:12px}
  .links a{white-space:nowrap}
  .data-table{min-width:640px}
}