/* 首页 · 深色科技感（轻量动画，移动端自动减弱） */
:root{
  --h-bg1:#07111F; --h-bg2:#0B1627;
  --h-blue:#00AEEC; --h-pink:#FB7299;
  --h-ink:#F3F7FB; --h-mut:#8292A8;
  --h-line:rgba(255,255,255,.09);
  --h-card:rgba(255,255,255,.045);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body.home-dark{
  background:linear-gradient(165deg,var(--h-bg1) 0%,var(--h-bg2) 58%,#0d1b30 100%);
  color:var(--h-ink);font-family:"PingFang SC","Microsoft YaHei",-apple-system,"Segoe UI",sans-serif;
  min-height:100vh;overflow-x:hidden;
}
#bgNet{position:fixed;inset:0;z-index:0;opacity:.55;pointer-events:none}
.glow{position:fixed;border-radius:50%;filter:blur(90px);z-index:0;pointer-events:none;opacity:.5}
.glow.g1{width:520px;height:520px;background:rgba(0,174,236,.16);top:-160px;left:-120px;animation:drift 26s ease-in-out infinite alternate}
.glow.g2{width:460px;height:460px;background:rgba(251,114,153,.13);bottom:-140px;right:-100px;animation:drift 32s ease-in-out infinite alternate-reverse}
@keyframes drift{from{transform:translate(0,0)}to{transform:translate(70px,50px)}}
.hgrid{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 40%,transparent 100%);
          mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 40%,transparent 100%)}
.hp{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:0 22px 70px}
/* nav */
.hnav{display:flex;align-items:center;justify-content:space-between;padding:20px 0 8px}
.hlogo{font-size:18px;font-weight:800;letter-spacing:.4px;color:var(--h-ink);text-decoration:none}
.hlogo b{color:var(--h-pink);font-weight:800}
.hnav-r{display:flex;align-items:center;gap:22px}
.hnav-r a.lnk{color:var(--h-mut);font-size:14px;text-decoration:none;font-weight:600}
.hnav-r a.lnk:hover{color:var(--h-ink)}
.btn-pri,.btn-ghost{display:inline-flex;align-items:center;gap:6px;border-radius:12px;padding:10px 20px;font-size:14px;font-weight:700;text-decoration:none;cursor:pointer;font-family:inherit;border:none}
.btn-pri{background:linear-gradient(135deg,var(--h-blue),#33c5ff);color:#04121e;box-shadow:0 8px 26px rgba(0,174,236,.28)}
.btn-pri.pk{background:linear-gradient(135deg,var(--h-pink),#ff8fb0);color:#fff;box-shadow:0 8px 26px rgba(251,114,153,.26)}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--h-ink);border:1px solid var(--h-line)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-pri:hover{filter:brightness(1.06)}
/* hero */
.hero{text-align:center;padding:86px 0 60px;position:relative}
.hero .kick{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:1px;color:var(--h-blue);border:1px solid rgba(0,174,236,.35);background:rgba(0,174,236,.08);border-radius:24px;padding:7px 18px;margin-bottom:26px}
.hero .kick .dot{width:7px;height:7px;border-radius:50%;background:var(--h-blue);box-shadow:0 0 10px var(--h-blue);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:46px;line-height:1.24;font-weight:800;margin:0 0 20px;letter-spacing:-.5px}
.hero h1 .hl-b{background:linear-gradient(120deg,#4fd0ff,var(--h-blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero h1 .hl-p{background:linear-gradient(120deg,#ffa8c4,var(--h-pink));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{font-size:16.5px;color:var(--h-mut);max-width:640px;margin:0 auto 14px;line-height:1.9}
.hero .tip{font-size:13.5px;color:#6c7d94;max-width:560px;margin:0 auto;line-height:1.8}
/* entries */
.entries{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:26px 0 64px}
.entry-card{position:relative;border:1px solid var(--h-line);background:var(--h-card);border-radius:20px;padding:30px 28px;backdrop-filter:blur(6px);transition:.18s;overflow:hidden}
.entry-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.18);box-shadow:0 18px 50px rgba(0,0,0,.4)}
.entry-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px}
.entry-card.analyze::before{background:linear-gradient(90deg,transparent,var(--h-blue),transparent)}
.entry-card.workbench::before{background:linear-gradient(90deg,transparent,var(--h-pink),transparent)}
.ec-tag{display:inline-block;font-size:11.5px;font-weight:700;border-radius:20px;padding:4px 12px;margin-bottom:14px;letter-spacing:.5px}
.entry-card.analyze .ec-tag{color:#7fdcff;background:rgba(0,174,236,.12);border:1px solid rgba(0,174,236,.3)}
.entry-card.workbench .ec-tag{color:#ffb3ca;background:rgba(251,114,153,.12);border:1px solid rgba(251,114,153,.3)}
.entry-card h2{font-size:22px;font-weight:800;margin:0 0 8px}
.ec-sub{font-size:13.5px;color:var(--h-mut);line-height:1.8;margin:0 0 20px}
.ec-form{display:flex;gap:9px;margin-bottom:20px}
.ec-form input{flex:1;background:rgba(255,255,255,.05);border:1px solid var(--h-line);border-radius:12px;padding:13px 15px;font-size:14px;color:var(--h-ink);outline:none;font-family:inherit;min-width:0}
.ec-form input::placeholder{color:#5d6f88}
.ec-form input:focus{border-color:rgba(0,174,236,.55);box-shadow:0 0 0 3px rgba(0,174,236,.12)}
.ec-form button{white-space:nowrap}
.ec-btns{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.ec-tags{display:flex;flex-wrap:wrap;gap:7px}
.ec-tags span{font-size:11.5px;color:#93a5bd;background:rgba(255,255,255,.05);border:1px solid var(--h-line);border-radius:16px;padding:4px 11px}
.wb-ok{display:flex;align-items:center;gap:9px;background:rgba(46,204,113,.09);border:1px solid rgba(46,204,113,.28);color:#7be3a8;border-radius:12px;padding:11px 14px;font-size:13px;margin-bottom:16px}
.wb-ok .t{margin-left:auto;color:#5fae7f;font-size:11.5px}
/* why cards */
.why{margin:10px 0 64px}
.why h2,.radar h2{font-size:24px;font-weight:800;text-align:center;margin:0 0 10px}
.why .lead,.radar .lead{text-align:center;color:var(--h-mut);font-size:14px;margin:0 0 30px}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.why-card{border:1px solid var(--h-line);background:var(--h-card);border-radius:16px;padding:22px 20px}
.why-card .q{font-size:15.5px;font-weight:700;margin:0 0 10px;line-height:1.55}
.why-card .a{font-size:12.5px;color:var(--h-mut);line-height:1.75;margin:0}
.why-card .ico{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:14px;background:rgba(0,174,236,.12);border:1px solid rgba(0,174,236,.25)}
.why-card:nth-child(2) .ico{background:rgba(251,114,153,.12);border-color:rgba(251,114,153,.25)}
.why-card:nth-child(3) .ico{background:rgba(120,140,255,.12);border-color:rgba(120,140,255,.25)}
.why-card:nth-child(4) .ico{background:rgba(46,204,113,.1);border-color:rgba(46,204,113,.25)}
/* radar */
.radar{margin:8px 0 40px}
.radar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.radar-col{border:1px solid var(--h-line);background:var(--h-card);border-radius:16px;padding:18px 16px}
.radar-col h3{font-size:14px;font-weight:800;margin:0 0 12px;display:flex;align-items:center;gap:8px}
.radar-col h3 i{width:8px;height:8px;border-radius:50%;font-style:normal}
.radar-col.rc1 h3 i{background:var(--h-pink);box-shadow:0 0 8px var(--h-pink)}
.radar-col.rc2 h3 i{background:var(--h-blue);box-shadow:0 0 8px var(--h-blue)}
.radar-col.rc3 h3 i{background:#b58cff;box-shadow:0 0 8px #b58cff}
.radar-col.rc4 h3 i{background:#ffd166;box-shadow:0 0 8px #ffd166}
.radar-col ol{list-style:none;margin:0;padding:0}
.radar-col li{padding:8px 0;border-top:1px dashed rgba(255,255,255,.07)}
.radar-col li:first-child{border-top:none}
.radar-col li a{display:block;font-size:12.5px;color:var(--h-ink);text-decoration:none;line-height:1.5;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.radar-col li a:hover{color:var(--h-blue)}
.radar-col li .m{font-size:11px;color:#5d6f88;margin-top:3px}
.radar-empty{grid-column:1/-1;text-align:center;color:var(--h-mut);font-size:13.5px;border:1px dashed var(--h-line);border-radius:16px;padding:38px 20px}
.radar-empty .spin{display:inline-block;width:14px;height:14px;border:2px solid rgba(0,174,236,.3);border-top-color:var(--h-blue);border-radius:50%;animation:rot 1s linear infinite;vertical-align:-2px;margin-right:8px}
@keyframes rot{to{transform:rotate(360deg)}}
/* footer */
.hfoot{border-top:1px solid var(--h-line);margin-top:30px;padding-top:24px;color:#5d6f88;font-size:12px;line-height:2;text-align:center}
/* responsive: mobile reduces animation */
@media(max-width:900px){
  .entries{grid-template-columns:1fr}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .radar-grid{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:31px}
  .hero{padding:56px 0 40px}
  .hnav-r a.lnk{display:none}
}
@media(max-width:560px){
  .why-grid,.radar-grid{grid-template-columns:1fr}
  .ec-form{flex-direction:column}
}
@media(max-width:720px){
  #bgNet,.glow{display:none}
  .hgrid{opacity:.22}
}
@media(prefers-reduced-motion:reduce){
  #bgNet,.glow{display:none}
  *{animation:none!important;transition:none!important}
}