/* 吉氡科技 · 玻璃拟态 3D 全息风格 */
:root{
  --bg:#070b16;
  --bg-2:#0b1224;
  --ink:#eaf2ff;
  --muted:#9fb0cc;
  --faint:#6b7a99;
  --holo-1:#5eead4;   /* 青 */
  --holo-2:#60a5fa;   /* 蓝 */
  --holo-3:#a78bfa;   /* 紫 */
  --holo-4:#f0a6ff;   /* 幻紫粉 */
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12);
  --line-holo:linear-gradient(120deg,rgba(94,234,212,.5),rgba(96,165,250,.5),rgba(167,139,250,.5),rgba(240,166,255,.4));
  --shadow:0 24px 60px rgba(2,6,23,.55);
  --radius:20px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:15px;
  overflow-x:hidden;min-height:100vh;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.mono{font-family:"SFMono-Regular",Consolas,monospace}

/* ===== 背景全息光晕 ===== */
.bg-fx{position:fixed;inset:0;z-index:-2;background:
  radial-gradient(1100px 600px at 78% -8%,rgba(96,165,250,.16),transparent 60%),
  radial-gradient(900px 520px at 12% 18%,rgba(94,234,212,.10),transparent 60%),
  radial-gradient(1000px 640px at 55% 108%,rgba(167,139,250,.14),transparent 60%),
  var(--bg);}
.bg-grid{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(140,170,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(140,170,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 42%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 42%);}
.orb{position:fixed;border-radius:50%;filter:blur(90px);opacity:.5;z-index:-1;pointer-events:none;animation:drift 16s ease-in-out infinite alternate}
.orb-1{width:420px;height:420px;left:-120px;top:8%;background:rgba(94,234,212,.20)}
.orb-2{width:520px;height:520px;right:-160px;top:34%;background:rgba(167,139,250,.20);animation-delay:-6s}
.orb-3{width:380px;height:380px;left:32%;bottom:-160px;background:rgba(96,165,250,.18);animation-delay:-11s}
@keyframes drift{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(40px,-34px,0) scale(1.08)}}

.wrap{max-width:1160px;margin:0 auto;padding:0 24px}

/* ===== 全息渐变描边玻璃卡 ===== */
.glass{
  position:relative;
  background:linear-gradient(160deg,var(--glass-strong),var(--glass));
  border:1px solid var(--line);
  border-radius:var(--radius);
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.10);
}
.glass-holo{overflow:hidden}
.glass-holo::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:var(--line-holo);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  opacity:.65;pointer-events:none;
}
.glass-holo::after{
  content:"";position:absolute;top:-60%;left:-30%;width:60%;height:220%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.10),transparent);
  transform:rotate(12deg);pointer-events:none;
}
.holo-text{
  background:linear-gradient(100deg,var(--holo-1),var(--holo-2) 45%,var(--holo-3) 75%,var(--holo-4));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ===== 导航 ===== */
header{position:sticky;top:0;z-index:60;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  background:rgba(7,11,22,.72);border-bottom:1px solid rgba(255,255,255,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:.5px}
.logo-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-size:15px;font-weight:800;color:#06121c;
  background:linear-gradient(135deg,var(--holo-1),var(--holo-2) 55%,var(--holo-3));
  box-shadow:0 0 22px rgba(96,165,250,.45)}
.logo small{display:block;font-size:10px;font-weight:400;color:var(--faint);letter-spacing:2px;line-height:1.1}
.nav-links{display:flex;gap:28px;font-size:14px;color:var(--muted)}
.nav-links a{position:relative;padding:6px 0;transition:.2s}
.nav-links a:hover{color:var(--ink)}
.nav-links a.active{color:var(--ink)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--holo-1),var(--holo-3))}
.nav-cta{display:flex;gap:12px;align-items:center}
#navUser{display:none;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
#navUser .avatar{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:700;color:#06121c;
  background:linear-gradient(135deg,var(--holo-1),var(--holo-3))}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 22px;border-radius:12px;font-size:14px;cursor:pointer;
  border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--ink);transition:.2s;font-family:inherit}
.btn:hover{border-color:rgba(148,197,255,.6);transform:translateY(-1px)}
.btn-primary{border:none;color:#04121f;font-weight:700;
  background:linear-gradient(100deg,var(--holo-1),var(--holo-2) 55%,var(--holo-3));
  box-shadow:0 8px 30px rgba(96,165,250,.35)}
.btn-primary:hover{box-shadow:0 12px 38px rgba(96,165,250,.5);transform:translateY(-2px)}
.btn-lg{padding:14px 32px;font-size:15px;border-radius:14px}
.btn-sm{padding:6px 14px;font-size:13px;border-radius:10px}
.btn-danger{color:#ffb4c0;border-color:rgba(255,120,150,.35)}
.btn-danger:hover{border-color:rgba(255,120,150,.7)}

/* ===== 区块 ===== */
section{padding:84px 0}
.sec-head{text-align:center;margin-bottom:52px}
.sec-tag{display:inline-block;font-size:12px;letter-spacing:3px;color:var(--holo-2);
  border:1px solid rgba(96,165,250,.35);border-radius:999px;padding:4px 18px;margin-bottom:16px;
  background:rgba(96,165,250,.08)}
.sec-head h2{font-size:34px;font-weight:800;letter-spacing:1px}
.sec-head p{color:var(--muted);margin-top:12px;font-size:15px;max-width:640px;margin-left:auto;margin-right:auto}

/* ===== HERO（3D 全息）===== */
.hero{padding:110px 0 70px;text-align:center;perspective:1200px}
.hero .kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--holo-1);
  border:1px solid rgba(94,234,212,.35);border-radius:999px;padding:6px 20px;margin-bottom:26px;
  background:rgba(94,234,212,.07);box-shadow:0 0 30px rgba(94,234,212,.12)}
.hero .kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--holo-1);
  box-shadow:0 0 10px var(--holo-1);animation:pulse 1.8s infinite}
@keyframes pulse{50%{opacity:.35}}
h1{font-size:52px;line-height:1.22;font-weight:800;letter-spacing:1px}
.hero .sub{max-width:680px;margin:24px auto 36px;color:var(--muted);font-size:16.5px}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* 3D 全息棱镜 */
.holo-prism{margin:64px auto 0;max-width:860px;padding:34px;transform-style:preserve-3d;
  transition:transform .25s ease;will-change:transform}
.prism-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.prism-item{text-align:center;padding:20px 12px;border-radius:14px;border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.035)}
.prism-item .ic{font-size:26px;margin-bottom:8px;filter:drop-shadow(0 0 12px rgba(96,165,250,.6))}
.prism-item b{display:block;font-size:15px}
.prism-item span{font-size:12px;color:var(--faint)}

/* ===== 数据条 ===== */
.stats{display:flex;justify-content:center;gap:64px;margin-top:60px;flex-wrap:wrap}
.stat b{display:block;font-size:34px;font-weight:800}
.stat b i{font-style:normal;font-size:15px;margin-left:2px}
.stat span{font-size:13px;color:var(--faint)}

/* ===== 卡片网格 ===== */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{padding:30px 26px;transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-6px)}
.card .ic{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;font-size:23px;margin-bottom:18px;
  background:linear-gradient(135deg,rgba(94,234,212,.18),rgba(167,139,250,.18));
  border:1px solid rgba(255,255,255,.12)}
.card h3{font-size:18px;margin-bottom:10px}
.card p{font-size:13.5px;color:var(--muted)}
.card ul{margin-top:14px;list-style:none}
.card ul li{font-size:13px;color:var(--muted);padding:5px 0 5px 20px;position:relative}
.card ul li::before{content:"";position:absolute;left:2px;top:13px;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(135deg,var(--holo-1),var(--holo-3));transform:rotate(45deg)}

/* ===== 流程 ===== */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:step}
.step{padding:26px 18px;text-align:center;position:relative}
.step .num{width:44px;height:44px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;
  font-weight:800;font-size:16px;color:#04121f;background:linear-gradient(135deg,var(--holo-1),var(--holo-2));
  box-shadow:0 0 24px rgba(96,165,250,.4)}
.step h4{font-size:15px;margin-bottom:6px}
.step p{font-size:12.5px;color:var(--muted)}

/* ===== 表单 ===== */
.form-card{max-width:760px;margin:0 auto;padding:40px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px}
.field label b{color:var(--holo-4)}
.field input,.field textarea,.field select{width:100%;padding:12px 15px;border-radius:12px;font-size:14px;color:var(--ink);
  background:rgba(255,255,255,.05);border:1px solid var(--line);outline:none;transition:.2s;font-family:inherit}
.field input:focus,.field textarea:focus,.field select:focus{border-color:rgba(96,165,250,.6);
  box-shadow:0 0 0 3px rgba(96,165,250,.15)}
.field textarea{min-height:110px;resize:vertical}
.field select option{background:#0b1224}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-hint{font-size:12px;color:var(--faint);margin-top:6px}
.form-msg{margin-top:14px;font-size:13.5px;min-height:20px}
.form-msg.ok{color:var(--holo-1)}
.form-msg.err{color:#ff9aa8}

/* ===== 登录页 ===== */
.auth-wrap{min-height:calc(100vh - 68px);display:grid;place-items:center;padding:60px 24px}
.auth-card{width:100%;max-width:440px;padding:42px 38px}
.auth-tabs{display:flex;gap:6px;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:12px;padding:5px;margin-bottom:26px}
.auth-tabs button{flex:1;padding:9px 0;border:none;background:transparent;color:var(--muted);font-size:13.5px;
  border-radius:9px;cursor:pointer;font-family:inherit;transition:.2s}
.auth-tabs button.active{color:#04121f;font-weight:700;background:linear-gradient(100deg,var(--holo-1),var(--holo-2))}
.auth-pane{display:none}
.auth-pane.active{display:block}
.auth-title{font-size:21px;font-weight:700;margin-bottom:6px;text-align:center}
.auth-desc{font-size:13px;color:var(--faint);text-align:center;margin-bottom:24px}

/* ===== 需求列表 ===== */
.demand-item{padding:24px 26px;margin-bottom:16px}
.demand-item .top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap}
.demand-item h4{font-size:16px}
.demand-item .meta{font-size:12.5px;color:var(--faint);margin-top:6px}
.demand-item .detail{font-size:13.5px;color:var(--muted);margin-top:10px;white-space:pre-wrap}
.demand-item .ops{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.tag{display:inline-block;font-size:12px;padding:3px 12px;border-radius:999px;border:1px solid rgba(94,234,212,.4);
  color:var(--holo-1);background:rgba(94,234,212,.08)}
.tag.amber{border-color:rgba(186,117,23,.5);color:#e8b368;background:rgba(186,117,23,.12)}

/* ===== 二维码卡 ===== */
.qr-card{display:flex;gap:28px;align-items:center;padding:36px;max-width:640px;margin:0 auto}
.qr-frame{flex-shrink:0;width:190px;height:190px;border-radius:18px;padding:10px;position:relative;
  background:linear-gradient(135deg,rgba(94,234,212,.25),rgba(167,139,250,.25));
  box-shadow:0 0 40px rgba(96,165,250,.30)}
.qr-frame img{width:100%;height:100%;border-radius:12px;object-fit:cover}
.qr-info h3{font-size:19px;margin-bottom:10px}
.qr-info p{font-size:13.5px;color:var(--muted)}
.qr-info .hl{color:var(--holo-1)}

/* ===== FAQ ===== */
.faq-item{margin-bottom:14px}
.faq-item details{padding:20px 26px}
.faq-item summary{cursor:pointer;font-size:15px;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:"+";font-size:20px;color:var(--holo-2)}
.faq-item details[open] summary::after{content:"−"}
.faq-item .ans{margin-top:12px;font-size:13.5px;color:var(--muted)}

/* ===== CTA ===== */
.cta-band{padding:56px 40px;text-align:center}
.cta-band h2{font-size:30px;font-weight:800;margin-bottom:14px}
.cta-band p{color:var(--muted);margin-bottom:28px}

/* ===== 页脚 ===== */
footer{border-top:1px solid rgba(255,255,255,.08);padding:48px 0 36px;background:rgba(5,8,16,.6)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.foot-grid h5{font-size:14px;margin-bottom:14px;color:var(--ink)}
.foot-grid a,.foot-grid p{display:block;font-size:13px;color:var(--faint);padding:4px 0}
.foot-grid a:hover{color:var(--holo-1)}
.copyright{border-top:1px solid rgba(255,255,255,.06);padding-top:22px;font-size:12px;color:var(--faint);text-align:center}

/* ===== 提示浮层 ===== */
#toast{position:fixed;left:50%;bottom:36px;transform:translateX(-50%) translateY(20px);z-index:99;
  padding:12px 26px;border-radius:12px;font-size:14px;opacity:0;pointer-events:none;transition:.3s;
  background:rgba(13,20,38,.92);border:1px solid var(--line);backdrop-filter:blur(14px);box-shadow:var(--shadow)}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
#toast.ok{border-color:rgba(94,234,212,.5);color:var(--holo-1)}
#toast.err{border-color:rgba(255,120,150,.5);color:#ff9aa8}

/* ===== 响应式 ===== */
@media(max-width:900px){
  h1{font-size:36px}
  section{padding:60px 0}
  .prism-inner{grid-template-columns:repeat(2,1fr)}
  .grid-2,.grid-3,.grid-4,.form-row{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .stats{gap:36px}
  .qr-card{flex-direction:column;text-align:center}
}