/* ===== 人才智库 rczk.cn · 全局样式 ===== */
:root{
  --blue:#2563eb; --blue2:#3b82f6; --violet:#7c3aed; --cyan:#06b6d4;
  --ink:#0f172a; --ink2:#1e293b; --muted:#64748b; --line:#e6e9f0;
  --bg:#f6f8fc; --card:#ffffff; --soft:#eef2ff;
  --grad:linear-gradient(120deg,#2563eb 0%,#7c3aed 100%);
  --grad2:linear-gradient(120deg,#06b6d4 0%,#3b82f6 60%,#7c3aed 100%);
  --shadow:0 10px 30px rgba(30,41,59,.08); --shadow-lg:0 18px 50px rgba(37,99,235,.16);
  --radius:16px; --radius-sm:10px;
  --on-grad:#ffffff;
  --maxw:1200px;
  --t-fast:.18s ease; --t:.28s cubic-bezier(.2,.7,.3,1);
}
html[data-theme="dark"]{
  --ink:#e8edf7; --ink2:#c3cde0; --muted:#93a1bd; --line:#27324a;
  --bg:#0b1020; --card:#121a2e; --soft:#1a2440;
  --shadow:0 10px 30px rgba(0,0,0,.4); --shadow-lg:0 18px 50px rgba(80,120,255,.2);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased;transition:background var(--t),color var(--t)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--grad);color:#fff;
  padding:12px 22px;border-radius:999px;font-weight:600;cursor:pointer;border:none;
  transition:transform var(--t),box-shadow var(--t);box-shadow:0 8px 20px rgba(37,99,235,.28)}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn.ghost{background:transparent;color:var(--blue);border:1.5px solid var(--blue);box-shadow:none}
.btn.ghost:hover{background:var(--soft)}
.btn.sm{padding:8px 16px;font-size:14px}
.tag{display:inline-block;font-size:12px;padding:3px 10px;border-radius:999px;
  background:var(--soft);color:var(--blue);border:1px solid var(--line);margin:2px}
.tag.v{background:rgba(124,58,237,.12);color:var(--violet);border-color:rgba(124,58,237,.25)}
.section{padding:72px 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 44px}
.section-head .eyebrow{font-size:13px;letter-spacing:2px;color:var(--blue);font-weight:700;text-transform:uppercase}
.section-head h2{font-size:32px;margin:10px 0 12px;line-height:1.25}
.section-head p{color:var(--muted)}
.grid{display:grid;gap:22px}
.cols-4{grid-template-columns:repeat(4,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(37,99,235,.4)}
.ai-badge{position:relative;display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;
  padding:4px 12px;border-radius:999px;background:linear-gradient(120deg,rgba(37,99,235,.14),rgba(124,58,237,.16));
  color:var(--violet);border:1px solid rgba(124,58,237,.3)}
.ai-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--grad2);
  box-shadow:0 0 0 3px rgba(6,182,212,.18);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* ===== Header / Nav ===== */
#site-header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(160%) blur(12px);
  background:color-mix(in srgb,var(--card) 82%,transparent);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:.5px}
.logo .mark{width:34px;height:34px;border-radius:9px;background:var(--grad);display:grid;place-items:center;
  color:#fff;font-weight:900;box-shadow:var(--shadow-lg)}
.logo .mark span{font-size:18px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:8px 14px;border-radius:9px;font-size:15px;color:var(--ink2);font-weight:500;transition:var(--t-fast)}
.nav-links a:hover{background:var(--soft);color:var(--blue)}
.nav-links a.active{color:var(--blue);background:var(--soft);font-weight:700}
.nav-right{display:flex;align-items:center;gap:10px}
.theme-btn{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--card);
  cursor:pointer;display:grid;place-items:center;font-size:18px;transition:var(--t-fast)}
.theme-btn:hover{border-color:var(--blue);color:var(--blue)}
.menu-btn{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:var(--card);font-size:22px;cursor:pointer}
@media(max-width:980px){
  .nav-links{position:fixed;inset:66px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--card);border-bottom:1px solid var(--line);padding:10px 16px 18px;
    transform:translateY(-130%);transition:transform var(--t);box-shadow:var(--shadow)}
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:13px 12px;border-radius:10px}
  .menu-btn{display:grid;place-items:center}
}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:84px 0 70px;background:
  radial-gradient(900px 420px at 85% -10%,rgba(124,58,237,.16),transparent 60%),
  radial-gradient(800px 400px at 5% 10%,rgba(6,182,212,.14),transparent 55%),
  linear-gradient(180deg,#eef3ff,#f6f8fc)}
html[data-theme="dark"] .hero{background:
  radial-gradient(900px 420px at 85% -10%,rgba(124,58,237,.28),transparent 60%),
  radial-gradient(800px 400px at 5% 10%,rgba(6,182,212,.2),transparent 55%),
  linear-gradient(180deg,#0c1426,#0b1020)}
.hero .grid-bg{position:absolute;inset:0;background-image:
  linear-gradient(rgba(37,99,235,.06) 1px,transparent 1px),
  linear-gradient(90deg,rgba(37,99,235,.06) 1px,transparent 1px);
  background-size:46px 46px;mask-image:radial-gradient(circle at 50% 30%,#000,transparent 75%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero h1{font-size:46px;line-height:1.15;font-weight:850;letter-spacing:-.5px}
.hero p.lead{font-size:18px;color:var(--muted);margin:18px 0 26px;max-width:560px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:26px;margin-top:34px;flex-wrap:wrap}
.hero-stats .s b{display:block;font-size:26px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats .s span{font-size:13px;color:var(--muted)}
.hero-visual{position:relative;height:380px}
.orb{position:absolute;border-radius:24px;background:var(--card);border:1px solid var(--line);
  box-shadow:var(--shadow-lg);padding:16px 18px;font-size:14px}
.orb .t{font-weight:700;margin-bottom:4px}
.orb.a{top:10px;left:6%;animation:float 6s ease-in-out infinite}
.orb.b{top:120px;right:4%;animation:float 7s ease-in-out infinite .5s}
.orb.c{bottom:18px;left:18%;animation:float 6.5s ease-in-out infinite 1s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.ai-chip{display:inline-flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;color:var(--blue);box-shadow:var(--shadow)}
@media(max-width:880px){.hero-inner{grid-template-columns:1fr}.hero h1{font-size:34px}.hero-visual{height:300px;margin-top:10px}}

/* ===== Marquee / trust ===== */
.trust{padding:26px 0;border-bottom:1px solid var(--line);background:var(--card)}
.trust .wrap{display:flex;align-items:center;gap:28px;flex-wrap:wrap;justify-content:center;color:var(--muted);font-size:14px}
.trust b{color:var(--ink2)}

/* ===== Feature blocks ===== */
.feature .ic{width:52px;height:52px;border-radius:14px;background:var(--soft);display:grid;place-items:center;
  font-size:24px;margin-bottom:14px;border:1px solid var(--line)}
.feature h3{font-size:19px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:15px}
.feature .ai-line{margin-top:12px;font-size:13px;color:var(--violet);font-weight:600}

/* ===== Expert / Talent cards ===== */
.person{display:flex;gap:14px;align-items:center}
.avatar{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;font-weight:800;
  color:#fff;font-size:20px;background:var(--grad);flex-shrink:0}
.avatar.lg{width:72px;height:72px;font-size:26px;border-radius:18px}
.person .nm{font-weight:700;font-size:16px}
.person .ti{color:var(--muted);font-size:13px}
.pcard .meta{display:flex;justify-content:space-between;align-items:center;margin-top:14px;
  padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--muted)}
.rate{color:var(--violet);font-weight:800;font-size:17px}
.stars{color:#f59e0b;letter-spacing:1px}
.fav{margin-left:auto;cursor:pointer;font-size:18px;color:var(--line);transition:var(--t-fast)}
.fav.on{color:#ef4444}

/* ===== Toolbar / filters ===== */
.toolbar{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:26px}
.search{flex:1;min-width:240px;display:flex;align-items:center;gap:10px;background:var(--card);
  border:1px solid var(--line);border-radius:999px;padding:11px 18px;box-shadow:var(--shadow)}
.search input{flex:1;border:none;background:transparent;outline:none;font-size:15px;color:var(--ink)}
select.filter{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:11px 14px;
  font-size:14px;color:var(--ink);cursor:pointer;outline:none}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.chip{padding:7px 15px;border-radius:999px;border:1px solid var(--line);background:var(--card);
  cursor:pointer;font-size:14px;color:var(--ink2);transition:var(--t-fast)}
.chip.active{background:var(--grad);color:#fff;border-color:transparent;font-weight:600}

/* ===== Pricing ===== */
.price{text-align:center;display:flex;flex-direction:column;height:100%}
.price .name{font-size:18px;font-weight:800}
.price .price-num{font-size:40px;font-weight:850;margin:10px 0}
.price .price-num small{font-size:15px;color:var(--muted);font-weight:500}
.price ul{list-style:none;text-align:left;margin:14px 0 22px;flex:1}
.price li{padding:7px 0;color:var(--ink2);font-size:14px;display:flex;gap:8px;align-items:flex-start}
.price li::before{content:"✓";color:var(--blue);font-weight:800}
.price.hot{border:2px solid transparent;background:
  linear-gradient(var(--card),var(--card)) padding-box,
  var(--grad) border-box;position:relative}
.price .ribbon{position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--grad);color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px}

/* ===== Steps / process ===== */
.step{text-align:center}
.step .n{width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;display:grid;
  place-items:center;font-weight:800;margin:0 auto 14px;font-size:18px;box-shadow:var(--shadow-lg)}

/* ===== Modal ===== */
.modal-mask{position:fixed;inset:0;background:rgba(8,12,24,.55);backdrop-filter:blur(3px);
  display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal-mask.open{display:flex}
.modal{background:var(--card);border-radius:20px;max-width:480px;width:100%;padding:28px;
  box-shadow:var(--shadow-lg);max-height:90vh;overflow:auto;animation:pop var(--t)}
@keyframes pop{from{transform:scale(.94);opacity:0}to{transform:scale(1);opacity:1}}
.modal h3{margin-bottom:6px;font-size:22px}
.modal .field{margin:14px 0}
.modal label{display:block;font-size:13px;color:var(--muted);margin-bottom:5px}
.modal input,.modal textarea,.modal select{width:100%;padding:11px 14px;border:1px solid var(--line);
  border-radius:10px;background:var(--bg);color:var(--ink);font-size:15px;outline:none;font-family:inherit}
.modal input:focus,.modal textarea:focus{border-color:var(--blue)}
.modal-close{position:absolute;top:16px;right:18px;font-size:24px;cursor:pointer;color:var(--muted)}
.modal-wrap{position:relative}

/* ===== Toast ===== */
#toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:12px 22px;border-radius:999px;font-size:14px;font-weight:600;
  opacity:0;pointer-events:none;transition:var(--t);z-index:200;box-shadow:var(--shadow-lg)}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== Footer ===== */
#site-footer{background:var(--ink);color:#cbd5e1;padding:54px 0 30px;margin-top:60px}
#site-footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px}
#site-footer h4{color:#fff;font-size:15px;margin-bottom:14px}
#site-footer a{display:block;color:#94a3b8;font-size:14px;padding:5px 0;transition:var(--t-fast)}
#site-footer a:hover{color:#fff}
#site-footer .about p{font-size:14px;color:#94a3b8;margin-top:12px;max-width:300px}
#site-footer .bottom{border-top:1px solid #1e293b;margin-top:36px;padding-top:20px;font-size:13px;
  color:#64748b;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
#site-footer .logo{color:#fff}
#site-footer .mark{box-shadow:none}
@media(max-width:880px){#site-footer .cols{grid-template-columns:1fr 1fr}}

/* ===== Article list ===== */
.article{display:grid;grid-template-columns:160px 1fr;gap:18px;align-items:center}
.article .thumb{height:110px;border-radius:12px;background:var(--grad2);display:grid;place-items:center;
  color:#fff;font-size:26px;font-weight:800}
.article h3{font-size:18px;margin-bottom:6px}
.article .ex{color:var(--muted);font-size:14px}
@media(max-width:560px){.article{grid-template-columns:1fr}.article .thumb{height:90px}}

/* ===== QA ===== */
.qa-item{border:1px solid var(--line);border-radius:14px;padding:18px 20px;background:var(--card);margin-bottom:14px}
.qa-q{font-weight:700;font-size:16px;display:flex;gap:8px}
.qa-q .q{background:var(--grad);color:#fff;width:24px;height:24px;border-radius:7px;display:grid;
  place-items:center;font-size:13px;flex-shrink:0}
.qa-a{margin-top:10px;color:var(--ink2);font-size:14px;padding-left:32px}
.qa-meta{margin-top:10px;padding-left:32px;display:flex;gap:16px;align-items:center;color:var(--muted);font-size:13px}
.like{cursor:pointer;color:var(--blue)}

/* ===== Stat band ===== */
.statband{background:var(--grad);color:#fff;border-radius:24px;padding:40px;display:grid;
  grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.statband .b b{font-size:34px;font-weight:850;display:block}
.statband .b span{font-size:14px;opacity:.9}
@media(max-width:760px){.statband{grid-template-columns:1fr 1fr;padding:28px}}

/* ===== Business model canvas ===== */
.bmc{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.bmc .cell{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}
.bmc .cell h4{font-size:15px;margin-bottom:8px;color:var(--blue)}
.bmc .cell p{font-size:13px;color:var(--muted)}
@media(max-width:760px){.bmc{grid-template-columns:1fr}}

/* ===== Misc ===== */
.empty{text-align:center;color:var(--muted);padding:40px;font-size:15px}
.muted{color:var(--muted)}
.center{text-align:center}
.mt20{margin-top:20px}.mt30{margin-top:30px}.mt40{margin-top:40px}
.pill-note{font-size:13px;color:var(--muted);margin-top:8px}
.breadcrumb{font-size:13px;color:var(--muted);padding:18px 0 0}
.breadcrumb a:hover{color:var(--blue)}
.fade-in{animation:fade .5s ease both}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}