/* ===== Variables ===== */
:root{
  --bg:#0a0c10; --bg-2:#11151c; --card:#151a23; --card-2:#1b2230;
  --border:#232c3a; --border-2:#2e3949;
  --text:#e7ecf3; --text-2:#9aa7b8; --text-3:#6b7686;
  --brand:#6c8cff; --brand-2:#a855f7; --grad:linear-gradient(135deg,#6c8cff,#a855f7);
  --green:#34d399; --orange:#fb923c; --red:#f87171;
  --radius:14px; --radius-sm:10px;
  --shadow:0 8px 30px rgba(0,0,0,.35);
  --maxw:1200px;
}
[data-theme="light"]{
  --bg:#f6f7fb; --bg-2:#fff; --card:#fff; --card-2:#f3f5f9;
  --border:#e6e9f0; --border-2:#d8dde7;
  --text:#1a1f2b; --text-2:#566073; --text-3:#8a94a6;
  --shadow:0 8px 30px rgba(20,30,60,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;transition:background .3s,color .3s}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800}

/* ===== Topbar ===== */
.topbar{position:sticky;top:0;z-index:50;background:rgba(10,12,16,.8);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
[data-theme="light"] .topbar{background:rgba(255,255,255,.85)}
.topbar-inner{display:flex;align-items:center;height:64px;gap:24px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:20px;white-space:nowrap}
.brand-logo{color:var(--brand);font-size:22px}
.brand-accent{color:var(--brand-2)}
.topnav{display:flex;gap:22px;margin-left:8px}
.topnav a{color:var(--text-2);font-size:15px;font-weight:500;transition:color .2s}
.topnav a:hover{color:var(--text)}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{background:var(--card);border:1px solid var(--border);color:var(--text);width:38px;height:38px;border-radius:10px;cursor:pointer;font-size:16px;transition:.2s}
.icon-btn:hover{border-color:var(--brand)}
.btn-primary{background:var(--grad);color:#fff;border:none;padding:9px 18px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;transition:.2s;white-space:nowrap}
.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px);box-shadow:0 6px 20px rgba(108,140,255,.4)}
.btn-primary.lg{padding:14px 28px;font-size:16px}
.btn-ghost{background:transparent;border:1px solid var(--border-2);color:var(--text);padding:9px 18px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;transition:.2s}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-ghost.lg{padding:14px 28px;font-size:16px}
.btn-ghost.sm{padding:5px 12px;font-size:13px}

/* ===== Hero ===== */
.hero{padding:70px 0 50px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-120px;left:50%;transform:translateX(-50%);width:700px;height:400px;background:radial-gradient(circle,rgba(108,140,255,.18),transparent 70%);pointer-events:none}
.hero-badge{display:inline-block;background:var(--card);border:1px solid var(--border);padding:7px 16px;border-radius:100px;font-size:14px;color:var(--text-2);margin-bottom:22px}
.hero-badge b{color:var(--brand)}
.hero-title{font-size:46px;font-weight:800;letter-spacing:-1px;line-height:1.15;margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--text-2);max-width:640px;margin:0 auto 32px}
.search-wrap{max-width:620px;margin:0 auto;display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--border-2);border-radius:14px;padding:8px 8px 8px 18px;box-shadow:var(--shadow)}
.search-icon{font-size:18px;color:var(--text-3)}
.search-wrap input{flex:1;background:transparent;border:none;outline:none;color:var(--text);font-size:16px;padding:10px 0}
.search-wrap input::placeholder{color:var(--text-3)}
.hot-tags{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.hot-tags a{background:var(--card);border:1px solid var(--border);padding:6px 14px;border-radius:100px;font-size:13px;color:var(--text-2);cursor:pointer;transition:.2s}
.hot-tags a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}

/* ===== Filters ===== */
.filters{padding:10px 0 24px;position:sticky;top:64px;z-index:40;background:var(--bg);border-bottom:1px solid var(--border)}
.cat-bar{display:flex;gap:8px;overflow-x:auto;padding-bottom:14px;scrollbar-width:none}
.cat-bar::-webkit-scrollbar{display:none}
.cat-chip{flex-shrink:0;background:var(--card);border:1px solid var(--border);padding:8px 16px;border-radius:100px;font-size:14px;color:var(--text-2);cursor:pointer;transition:.2s;white-space:nowrap}
.cat-chip:hover{border-color:var(--brand);color:var(--text)}
.cat-chip.active{background:var(--grad);color:#fff;border-color:transparent}
.filter-row{display:flex;align-items:center;gap:20px;flex-wrap:wrap;padding-top:14px}
.seg{display:flex;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:3px}
.seg-btn{background:transparent;border:none;color:var(--text-2);padding:6px 14px;border-radius:8px;font-size:13px;cursor:pointer;transition:.2s}
.seg-btn.active{background:var(--card-2);color:var(--text);font-weight:600}
.result-count{margin-left:auto;font-size:13px;color:var(--text-3)}

/* ===== Grid & Cards ===== */
.tools{padding:30px 0 60px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;transition:.25s;cursor:pointer;display:flex;flex-direction:column;gap:10px;position:relative;overflow:hidden}
.card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:0 14px 40px rgba(108,140,255,.18)}
.card-head{display:flex;align-items:center;gap:12px}
.card-logo{width:44px;height:44px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0;background:var(--card-2);border:1px solid var(--border);position:relative;overflow:hidden}
.card-titles{min-width:0}
.card-name{font-weight:700;font-size:16px;display:flex;align-items:center;gap:6px}
.card-nameen{font-size:12px;color:var(--text-3)}
.card-desc{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:42px}
.card-tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{font-size:12px;padding:3px 9px;border-radius:6px;background:var(--card-2);color:var(--text-2);border:1px solid var(--border)}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:6px}
.badge{font-size:12px;font-weight:600;padding:3px 10px;border-radius:100px}
.badge.free{background:rgba(52,211,153,.15);color:var(--green)}
.badge.freemium{background:rgba(251,146,60,.15);color:var(--orange)}
.badge.paid{background:rgba(248,113,113,.15);color:var(--red)}
.card-visit{font-size:13px;color:var(--brand);font-weight:600;display:flex;align-items:center;gap:4px}
.card-hot{position:absolute;top:14px;right:14px;font-size:12px;color:var(--text-3)}
.card-hot b{color:var(--orange)}
.featured-dot{width:7px;height:7px;border-radius:50%;background:var(--orange);display:inline-block}

/* ===== Empty ===== */
.empty{text-align:center;padding:80px 0;color:var(--text-2)}
.empty-emoji{font-size:48px;margin-bottom:12px}

/* ===== Service ===== */
.service{background:var(--bg-2);border-top:1px solid var(--border);padding:80px 0;position:relative;overflow:hidden}
.service::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:800px;height:400px;background:radial-gradient(circle,rgba(168,85,247,.12),transparent 70%);pointer-events:none}
.service-head{text-align:center;max-width:680px;margin:0 auto 48px;position:relative}
.kicker{display:inline-block;color:var(--brand);font-weight:700;font-size:14px;letter-spacing:1px;margin-bottom:14px;text-transform:uppercase}
.service-head h2{font-size:38px;font-weight:800;letter-spacing:-.5px;margin-bottom:16px}
.service-head p{font-size:17px;color:var(--text-2)}
.service-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;margin-bottom:48px}
.service-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:.25s}
.service-card:hover{transform:translateY(-4px);border-color:var(--brand-2);box-shadow:0 14px 40px rgba(168,85,247,.15)}
.sc-icon{width:52px;height:52px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:26px;background:var(--card-2);border:1px solid var(--border);margin-bottom:16px}
.service-card h3{font-size:18px;margin-bottom:8px}
.service-card p{font-size:14px;color:var(--text-2)}
.service-flow{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:40px}
.flow-step{display:flex;flex-direction:column;align-items:center;gap:6px;min-width:90px}
.flow-step b{font-size:24px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.flow-step span{font-size:14px;color:var(--text-2)}
.flow-arrow{color:var(--text-3);font-size:20px}
.service-cta{background:var(--grad);border-radius:20px;padding:40px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;position:relative;overflow:hidden}
.service-cta-text h3{color:#fff;font-size:24px;margin-bottom:6px}
.service-cta-text p{color:rgba(255,255,255,.85);font-size:15px}
.service-cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.service-cta .btn-primary{background:#fff;color:var(--brand)}
.service-cta .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.service-cta .btn-ghost:hover{background:rgba(255,255,255,.15);color:#fff}

/* ===== Footer ===== */
.footer{background:var(--bg-2);border-top:1px solid var(--border);padding:50px 0 24px}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-desc{font-size:14px;color:var(--text-2);margin-top:12px;max-width:320px}
.footer-col h4{font-size:15px;margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:var(--text-2);margin-bottom:10px;transition:color .2s}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{text-align:center;font-size:13px;color:var(--text-3);padding-top:20px;border-top:1px solid var(--border)}

/* ===== Modal ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);z-index:100;display:none;align-items:center;justify-content:center;padding:20px}
.modal-overlay.show{display:flex}
.modal{background:var(--card);border:1px solid var(--border);border-radius:18px;max-width:560px;width:100%;max-height:88vh;overflow-y:auto;padding:32px;box-shadow:var(--shadow);animation:pop .25s ease}
.modal-sm{max-width:420px}
@keyframes pop{from{transform:scale(.94);opacity:0}to{transform:scale(1);opacity:1}}
.modal-close{position:absolute;top:16px;right:18px;background:none;border:none;color:var(--text-2);font-size:28px;cursor:pointer;line-height:1}
.modal h2{font-size:24px;margin-bottom:6px}
.modal-sub{color:var(--text-2);font-size:15px;margin-bottom:20px}
.modal-close-bar{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:18px}
.md-logo{width:60px;height:60px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:30px;background:var(--card-2);border:1px solid var(--border);position:relative;overflow:hidden}
.logo-emoji{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;z-index:1}
.tool-logo{position:relative;z-index:2;width:100%;height:100%;object-fit:contain;border-radius:inherit;padding:5px}
.md-name{font-size:22px;font-weight:800}
.md-nameen{color:var(--text-3);font-size:13px}
.md-row{display:flex;gap:10px;margin:18px 0;flex-wrap:wrap}
.md-section{margin:18px 0}
.md-section h4{font-size:14px;color:var(--text-3);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}
.md-section p{font-size:15px;color:var(--text-2)}
.md-feat{display:flex;flex-direction:column;gap:8px}
.md-feat li{list-style:none;font-size:14px;color:var(--text-2);padding-left:22px;position:relative}
.md-feat li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:700}
.md-actions{display:flex;gap:12px;margin-top:24px}
.md-actions .btn-primary{flex:1;text-align:center;padding:13px}
.md-actions .btn-ghost{padding:13px 20px}

/* Contact modal */
.qr-box{display:flex;justify-content:center;margin-bottom:18px}
.qr-placeholder{width:200px;height:200px;border:2px dashed var(--border-2);border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--text-3);font-size:32px;gap:4px}
.qr-placeholder small{font-size:11px}
.contact-wechat{display:flex;align-items:center;gap:10px;justify-content:center;background:var(--card-2);border:1px solid var(--border);border-radius:10px;padding:12px;margin-bottom:18px}
.contact-wechat code{font-size:16px;font-weight:700;color:var(--brand)}
.contact-form{display:flex;flex-direction:column;gap:10px}
.contact-form input,.contact-form textarea{background:var(--card-2);border:1px solid var(--border);border-radius:10px;padding:12px 14px;color:var(--text);font-size:14px;font-family:inherit;outline:none;transition:.2s}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--brand)}
.contact-form textarea{resize:vertical;min-height:80px}
.contact-form .btn-primary{margin-top:4px}
.modal-note{text-align:center;font-size:13px;color:var(--text-3);margin-top:14px}

/* Toast */
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--card);border:1px solid var(--brand);color:var(--text);padding:12px 22px;border-radius:100px;font-size:14px;font-weight:600;box-shadow:var(--shadow);z-index:200;opacity:0;pointer-events:none;transition:.3s}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== Responsive ===== */
@media(max-width:860px){
  .topnav{display:none}
  .hero-title{font-size:32px}
  .hero-sub{font-size:15px}
  .service-head h2{font-size:28px}
  .service-cta{flex-direction:column;text-align:center;padding:28px}
  .footer-inner{grid-template-columns:1fr 1fr;gap:24px}
  .filters{top:64px}
}
@media(max-width:520px){
  .hero{padding:50px 0 30px}
  .hero-title{font-size:26px}
  .search-wrap{flex-wrap:wrap}
  .search-wrap .btn-primary{width:100%}
  .footer-inner{grid-template-columns:1fr}
  .topbar-right .btn-primary{display:none}
}

/* ===== 分类区块（参考 aiji.vip 分区布局） ===== */
.cat-section{margin-bottom:44px;scroll-margin-top:140px}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--border)}
.section-head h3{font-size:20px;font-weight:800;display:flex;align-items:center;gap:8px}
.section-more{font-size:13px;color:var(--text-3);font-weight:500}
#grid > .grid{margin-bottom:0}
.filters{padding:8px 0 18px}
.cat-bar{padding-bottom:10px}
.filter-row{padding-top:10px}

/* ===== 搜索引擎切换 ===== */
.search-box{max-width:620px;margin:0 auto}
.engine-tabs{display:flex;justify-content:center;gap:6px;margin-bottom:10px}
.engine-tab{background:transparent;border:1px solid var(--border);color:var(--text-2);padding:5px 16px;border-radius:100px;font-size:13px;cursor:pointer;transition:.2s}
.engine-tab.active{background:var(--grad);color:#fff;border-color:transparent}
.engine-tab:hover{color:var(--text)}

/* ===== AI 资讯区 ===== */
.news{padding:36px 0 60px}
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.news-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;transition:.25s;display:flex;flex-direction:column;gap:8px}
.news-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:0 10px 30px rgba(108,140,255,.15)}
.news-cat{font-size:12px;color:var(--brand);font-weight:600;background:rgba(108,140,255,.12);padding:2px 10px;border-radius:6px;align-self:flex-start}
.news-title{font-size:15px;font-weight:600;line-height:1.5}
.news-meta{font-size:12px;color:var(--text-3);margin-top:auto}

/* ===== 推广变现中心（参考 zgfa） ===== */
.partner{background:var(--bg-2);border-top:1px solid var(--border);padding:80px 0;position:relative;overflow:hidden}
.partner::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:800px;height:380px;background:radial-gradient(circle,rgba(52,211,153,.12),transparent 70%);pointer-events:none}
.partner-head{text-align:center;max-width:680px;margin:0 auto 36px;position:relative}
.partner-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.dash{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:40px}
.dash-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center}
.dash-num{font-size:32px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.dash-num.sm{font-size:22px}
.dash-label{font-size:13px;color:var(--text-2);margin-top:6px}
.dash-mini .dash-num{background:none;-webkit-text-fill-color:var(--text);color:var(--text)}
.mech-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin-bottom:40px}
.mech{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.mech-ic{font-size:24px;margin-bottom:10px}
.mech h4{font-size:16px;margin-bottom:6px}
.mech p{font-size:13px;color:var(--text-2)}
.pp-card{cursor:pointer}
@media(max-width:720px){.dash{grid-template-columns:repeat(2,1fr)}}

/* ===== 我的收藏 / 推广卡片补丁 ===== */
.fav-btn{position:absolute;top:11px;right:14px;background:none;border:none;font-size:18px;color:var(--text-3);cursor:pointer;z-index:3;line-height:1;padding:2px}
.fav-btn:hover{color:var(--orange)}
.fav-btn.on{color:var(--orange)}
.card-hot{right:46px}
.comm-tag{color:var(--green)!important;border-color:rgba(52,211,153,.4)!important;background:rgba(52,211,153,.1)!important}
.flat-title{font-size:20px;font-weight:800;margin-bottom:16px}
.fav-chip{border-style:dashed}
.md-actions .btn-ghost{padding:13px 14px;font-size:13px}