*{box-sizing:border-box;margin:0;padding:0}
:root{
  --p1:#6366f1;--p2:#8b5cf6;--p3:#06b6d4;
  --text:#e8eaf6;--muted:#a3a8c7;
  --card:rgba(20,22,40,.55);--line:rgba(255,255,255,.12);
}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--text);background:#0b0d1d;min-height:100vh;overflow-x:hidden;
}
/* ---------- 背景 ---------- */
.bg{position:fixed;inset:0;overflow:hidden;z-index:0;
  background:radial-gradient(1200px 600px at 10% 10%,#1d1b4b 0%,transparent 60%),
             radial-gradient(900px 600px at 90% 90%,#0e3a4a 0%,transparent 60%),#0b0d1d}
.blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.55;animation:float 18s ease-in-out infinite}
.b1{width:420px;height:420px;background:var(--p1);top:-120px;left:-80px}
.b2{width:360px;height:360px;background:var(--p3);bottom:-120px;right:-60px;animation-delay:-6s}
.b3{width:300px;height:300px;background:#ec4899;top:40%;left:45%;opacity:.28;animation-delay:-12s}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(60px,-40px) scale(1.08)}66%{transform:translate(-40px,50px) scale(.95)}}
.grid{position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:44px 44px;mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%)}

/* ---------- 布局 ---------- */
.auth-wrap{position:relative;z-index:1;min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr;
  align-items:center;gap:56px;max-width:1120px;margin:0 auto;padding:40px 24px}
.auth-wrap.single{grid-template-columns:1fr;max-width:460px}

/* ---------- 左侧展示 ---------- */
.showcase h2{font-size:34px;line-height:1.3;margin:34px 0 12px;font-weight:700}
.showcase h2 em{font-style:normal;background:linear-gradient(90deg,#a5b4fc,#67e8f9);-webkit-background-clip:text;background-clip:text;color:transparent}
.showcase p{color:var(--muted);font-size:15px}
.feats{list-style:none;display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.feats li{padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.04);font-size:13px;color:#cfd3f0}

.terminal{border-radius:14px;overflow:hidden;background:rgba(10,12,24,.85);border:1px solid var(--line);
  box-shadow:0 30px 80px -20px rgba(0,0,0,.6),0 0 0 1px rgba(99,102,241,.15);transform:perspective(1200px) rotateY(6deg) rotateX(2deg)}
.term-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:rgba(255,255,255,.04);border-bottom:1px solid var(--line)}
.term-bar i{width:11px;height:11px;border-radius:50%;background:#ff5f57}
.term-bar i:nth-child(2){background:#febc2e}.term-bar i:nth-child(3){background:#28c840}
.term-bar span{margin-left:10px;font-size:12px;color:var(--muted);font-family:ui-monospace,Menlo,Consolas,monospace}
.term-body{height:230px;padding:16px 18px;font:13.5px/1.75 ui-monospace,"SF Mono",Menlo,Consolas,monospace;color:#e5e7eb;white-space:pre-wrap;overflow:hidden}
.term-body .p{color:#4ade80}.term-body .o{color:#94a3b8}
.cur{display:inline-block;width:8px;height:16px;background:#a5b4fc;vertical-align:-3px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ---------- 登录卡片 ---------- */
.auth-card{background:var(--card);backdrop-filter:blur(22px) saturate(140%);-webkit-backdrop-filter:blur(22px) saturate(140%);
  border:1px solid var(--line);border-radius:22px;padding:40px 36px 26px;
  box-shadow:0 40px 100px -30px rgba(0,0,0,.7),inset 0 1px 0 rgba(255,255,255,.08);animation:rise .6s cubic-bezier(.2,.8,.2,1)}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.brand{text-align:center;margin-bottom:26px}
.logo{width:58px;height:58px;margin:0 auto 14px;border-radius:16px;display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,var(--p1),var(--p2) 55%,var(--p3));box-shadow:0 12px 30px -8px rgba(99,102,241,.7)}
.logo svg{width:30px;height:30px}
.brand h1{font-size:24px;font-weight:700;letter-spacing:.5px}
.brand p{font-size:13px;color:var(--muted);margin-top:6px}

.field{display:block;position:relative;margin-bottom:16px}
.field>span{display:block;font-size:13px;color:#c7cbe6;margin-bottom:7px}
.field input{width:100%;height:48px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.05);
  color:#fff;font-size:15px;padding:0 14px;outline:none;transition:.2s}
.field.icon input{padding-left:44px;padding-right:44px}
.field>svg{position:absolute;left:14px;bottom:14px;width:20px;height:20px;fill:none;stroke:#8b90b8;stroke-width:1.8;pointer-events:none;transition:.2s}
.field input::placeholder{color:#6b7096}
.field input:focus{border-color:rgba(129,140,248,.8);background:rgba(255,255,255,.08);box-shadow:0 0 0 4px rgba(99,102,241,.18)}
.field input:focus~svg,.field input:focus+svg{stroke:#a5b4fc}
.field:focus-within>svg{stroke:#a5b4fc}
.eye{position:absolute;right:8px;bottom:8px;width:32px;height:32px;border:0;border-radius:8px;background:transparent;cursor:pointer;display:grid;place-items:center}
.eye svg{width:20px;height:20px;fill:none;stroke:#8b90b8;stroke-width:1.8}
.eye.on svg{stroke:#a5b4fc}.eye:hover{background:rgba(255,255,255,.06)}

.btn{width:100%;height:50px;margin-top:8px;border:0;border-radius:12px;cursor:pointer;color:#fff;font-size:16px;font-weight:600;letter-spacing:2px;
  display:flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;
  background:linear-gradient(135deg,var(--p1),var(--p2));box-shadow:0 14px 30px -10px rgba(99,102,241,.8);transition:.25s;position:relative;overflow:hidden}
.btn svg{width:18px;height:18px;transition:.25s}
.btn:hover{transform:translateY(-1px);box-shadow:0 18px 36px -10px rgba(99,102,241,.95)}
.btn:hover svg{transform:translateX(4px)}
.btn::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.25) 50%,transparent 70%);transform:translateX(-100%);transition:.6s}
.btn:hover::after{transform:translateX(100%)}

.alert{padding:11px 14px;border-radius:10px;margin-bottom:16px;font-size:13.5px;background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.35);color:#fecaca;animation:shake .4s}
.alert.ok{background:rgba(34,197,94,.12);border-color:rgba(34,197,94,.35);color:#bbf7d0;animation:none}
@keyframes shake{20%,60%{transform:translateX(-5px)}40%,80%{transform:translateX(5px)}}
.foot,.hint{text-align:center;font-size:12px;color:#6b7096;margin-top:22px}

@media (max-width:900px){
  .auth-wrap{grid-template-columns:1fr;gap:0;max-width:460px}
  .showcase{display:none}
  .auth-card{padding:34px 22px 22px}
}