:root{
  --bg:#0b1020; --bg2:#0f1530; --card:#141b34; --card2:#1a2244;
  --text:#e8ecf6; --muted:#9aa6c4; --line:#26304f;
  --brand:#6d8bff; --brand2:#b06dff; --accent:#36e0c8;
  --free:#36e0a0; --freemium:#ffce5a; --paid:#ff7a9c;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --radius:16px;
}
html[data-theme="light"]{
  --bg:#f5f7fc; --bg2:#eef2fb; --card:#ffffff; --card2:#f1f4fc;
  --text:#16203a; --muted:#5b678c; --line:#e2e8f5;
  --shadow:0 10px 30px rgba(30,50,120,.10);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em}

/* header */
.site-header{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);
  background:color-mix(in srgb,var(--bg) 80%,transparent);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:18px;height:62px}
.logo{font-weight:800;font-size:22px;letter-spacing:.5px}
.logo span{background:linear-gradient(90deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:18px;margin-left:8px;font-size:15px}
.nav-links a:hover{color:var(--brand)}
.search-jump{margin-left:auto;padding:8px 14px;border:1px solid var(--line);border-radius:999px;font-size:14px;background:var(--card2)}
.search-jump:hover{border-color:var(--brand)}

/* hero */
.hero{position:relative;text-align:center;padding:70px 20px 50px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:
  radial-gradient(60% 60% at 20% 10%,rgba(109,139,255,.25),transparent),
  radial-gradient(50% 50% at 85% 20%,rgba(176,109,255,.22),transparent),
  radial-gradient(60% 60% at 50% 90%,rgba(54,224,200,.18),transparent);filter:blur(10px)}
.hero h1{position:relative;font-size:clamp(28px,5vw,48px);font-weight:800}
.hero h1 span{background:linear-gradient(90deg,var(--brand),var(--brand2),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{position:relative;color:var(--muted);max-width:680px;margin:14px auto 0;font-size:16px}
.hero-search{position:relative;display:flex;max-width:620px;margin:26px auto 0;gap:8px}
.hero-search input{flex:1;padding:14px 18px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--text);font-size:15px;outline:none}
.hero-search input:focus{border-color:var(--brand)}
.hero-search button{padding:0 26px;border:0;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;font-weight:700;cursor:pointer}
.stats{position:relative;display:flex;gap:30px;justify-content:center;margin-top:24px;color:var(--muted);font-size:15px}
.stats b{color:var(--text);font-size:20px}

/* blocks */
.block{margin:46px 0}
.block-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:18px}
.block-head h2{font-size:24px}
.more{color:var(--brand);font-size:14px}

/* category grid */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
.cat-card{display:flex;flex-direction:column;gap:6px;padding:18px;border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(180deg,var(--card),var(--card2));transition:.2s}
.cat-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow)}
.cat-ico{font-size:26px}
.cat-name{font-weight:700}
.cat-count{font-size:12px;color:var(--muted)}

/* tool grid + card */
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.tool-card{display:block;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);transition:.2s}
.tool-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow)}
.tc-top{display:flex;align-items:center;gap:10px}
.tc-icon{font-size:24px}
.tc-name{font-weight:700;font-size:15px}
.tc-rate{margin-left:auto;color:var(--freemium);font-size:13px;white-space:nowrap}
.tc-desc{margin:10px 0;color:var(--muted);font-size:13.5px;min-height:38px}
.tc-tags{display:flex;flex-wrap:wrap;gap:6px}
.tc-tags span{font-size:11px;color:var(--brand);background:color-mix(in srgb,var(--brand) 14%,transparent);padding:2px 8px;border-radius:999px}

/* badges */
.badge{display:inline-block;font-size:11px;padding:2px 8px;border-radius:999px;font-weight:600}
.badge-free{color:var(--free);background:color-mix(in srgb,var(--free) 16%,transparent)}
.badge-freemium{color:var(--freemium);background:color-mix(in srgb,var(--freemium) 16%,transparent)}
.badge-paid{color:var(--paid);background:color-mix(in srgb,var(--paid) 16%,transparent)}
.badge-rate{color:var(--muted);background:var(--card2)}

/* articles */
.art-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.art-card{display:block;padding:18px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);transition:.2s}
.art-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow)}
.art-cat{font-size:12px;color:var(--brand);font-weight:700;margin-bottom:8px}
.art-card h3{font-size:17px;margin:0 0 8px}
.art-card p{color:var(--muted);font-size:14px;margin:0 0 12px}
.art-meta{font-size:12px;color:var(--muted);display:flex;gap:14px}

/* breadcrumb */
.crumb{padding:18px 0 4px;color:var(--muted);font-size:14px}
.crumb a:hover{color:var(--brand)}
.crumb span{color:var(--text)}

/* category hero */
.cat-hero{display:flex;align-items:center;gap:18px;margin:10px 0 22px}
.cat-ico.big{font-size:48px}
.cat-hero h1{font-size:32px;margin:0}
.cat-hero p{color:var(--muted);margin:4px 0 0}

/* filter */
.pf-filter{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:18px}
.pf-btn{padding:7px 14px;border:1px solid var(--line);border-radius:999px;background:var(--card);color:var(--muted);cursor:pointer;font-size:13px}
.pf-btn.active,.pf-btn:hover{border-color:var(--brand);color:var(--brand)}
.pf-filter input{margin-left:auto;padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--text);min-width:200px}

/* tool hero / detail */
.tool-hero{display:flex;gap:18px;align-items:flex-start;margin:8px 0 26px}
.tool-hero .cat-ico.big{font-size:54px}
.th-main h1{font-size:32px;margin:0 0 10px}
.th-badges{display:flex;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.th-desc{color:var(--muted);max-width:640px}
.visit-btn{display:inline-block;margin-top:14px;padding:10px 20px;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;font-weight:700;font-size:14px}
.visit-btn.full{display:block;text-align:center;margin-top:14px}
.tool-layout{display:grid;grid-template-columns:1fr 300px;gap:26px;margin-bottom:30px}
.tool-body h2{font-size:20px;margin-top:22px}
.meta-box{border:1px solid var(--line);border-radius:var(--radius);padding:16px;background:var(--card)}
.meta-box h4{margin:0 0 12px;font-size:15px}
.meta-box div{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px dashed var(--line);font-size:13.5px}
.meta-box div:last-child{border-bottom:0}
.meta-box span{color:var(--muted)}

/* article */
.article{max-width:840px;margin:10px auto 30px}
.article .art-cat{color:var(--brand);font-weight:700;margin-bottom:8px}
.article h1{font-size:32px}
.art-meta.big{color:var(--muted);font-size:14px;display:flex;gap:18px;margin-bottom:18px}
.article-body{font-size:16px}
.article-body h2{font-size:21px;margin-top:26px}
.article-body p{margin:10px 0;color:var(--text)}

/* compare */
.cmp-title{font-size:30px;margin-bottom:18px}
.cmp-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.cmp-tool{border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:var(--card)}
.cmp-tool h3{margin:8px 0}
.cmp-tool p{color:var(--muted);font-size:14px;margin:8px 0 12px}

/* faq */
.faq-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:14px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);padding:16px;background:var(--card)}
.faq-item h3{font-size:16px;margin:0 0 8px}
.faq-item p{color:var(--muted);font-size:14px;margin:0}

/* chips */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin:10px 0 24px}
.chip{display:inline-block;padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:var(--card);font-size:14px}
.chip:hover{border-color:var(--brand)}

/* submit form */
.submit-form{display:flex;flex-direction:column;gap:14px;max-width:520px;margin-top:16px}
.submit-form label{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--muted)}
.submit-form input,.submit-form select,.submit-form textarea{padding:11px 14px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--text);font-size:14px;font-family:inherit}
.submit-form button{padding:12px;border:0;border-radius:10px;background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;font-weight:700;cursor:pointer;font-size:15px}

/* search page */
.search-input{width:100%;padding:14px 18px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--text);font-size:16px;margin:16px 0 22px;outline:none}
.search-input:focus{border-color:var(--brand)}

/* footer */
.site-footer{border-top:1px solid var(--line);margin-top:60px;padding:40px 0 24px;background:var(--bg2)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:26px}
.footer-grid h4{font-size:14px;margin:0 0 12px}
.footer-grid a{display:block;color:var(--muted);font-size:14px;padding:4px 0}
.footer-grid a:hover{color:var(--brand)}
.copyright{text-align:center;color:var(--muted);font-size:13px;margin-top:30px;padding-top:18px;border-top:1px solid var(--line)}

@media(max-width:820px){
  .tool-layout{grid-template-columns:1fr}
  .cmp-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
}