/* ============ LOGIN : TOKENS ============ */
:root{
  --bg:#0b0a0c;
  --ink:#ece4d6;
  --ink-soft:rgba(236,228,214,.72);
  --ink-faint:rgba(236,228,214,.45);
  --gold:#c9a86a;
  --gold-bright:#e3c489;
  --gold-soft:rgba(201,168,106,.42);
  --line:rgba(201,168,106,.22);
  --line-strong:rgba(201,168,106,.5);
  --sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --serif:'Noto Serif SC','Songti SC','STSong',serif;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  min-height:100vh;
  display:flex;
  flex-direction:column;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

/* ============ BACKGROUND ============ */
.login-bg{
  position:fixed;inset:0;z-index:0;
  background:url("../../pic/startup.jpg") center/cover no-repeat;
}
.login-bg::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,7,10,.55),rgba(8,7,10,.78));
  backdrop-filter:blur(2px);
}

/* ============ TOP MENU (transparent, text-only) ============ */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:20;
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 44px;
  background:transparent;
}
.topbar .brand{
  font-family:var(--serif);font-weight:400;font-size:18px;letter-spacing:.16em;
  color:var(--ink);text-decoration:none;
  display:flex;align-items:center;gap:10px;
}
.topbar .brand .dot{width:8px;height:8px;border-radius:50%;background:var(--gold);box-shadow:0 0 12px rgba(201,168,106,.7)}
.topbar nav{display:flex;align-items:center;gap:34px}
.topbar nav a{
  font-size:13px;letter-spacing:.14em;color:var(--ink-soft);
  text-decoration:none;position:relative;padding:4px 0;transition:.3s;
}
.topbar nav a::after{
  content:'';position:absolute;left:0;bottom:0;height:1px;width:0;
  background:linear-gradient(90deg,var(--gold),var(--gold-bright));transition:width .35s;
}
.topbar nav a:hover{color:var(--gold-bright)}
.topbar nav a:hover::after,.topbar nav a.active::after{width:100%}
.topbar nav a.active{color:var(--gold-bright)}

/* ============ STAGE ============ */
.login-stage{
  position:relative;z-index:10;flex:1;
  display:flex;align-items:center;justify-content:center;
  padding:120px 20px 60px;
}

/* ============ CARD ============ */
.login-card{
  width:100%;max-width:380px;
  background:rgba(16,14,19,.62);
  border:1px solid var(--line);
  border-radius:10px;
  padding:40px 36px 36px;
  backdrop-filter:blur(14px);
  box-shadow:0 30px 80px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.05);
}
.login-card .eyebrow{
  font-size:11px;letter-spacing:.46em;text-transform:uppercase;
  color:var(--gold-soft);text-align:center;
}
.login-card h1{
  font-family:var(--serif);font-weight:300;
  font-size:26px;letter-spacing:.1em;text-align:center;margin:12px 0 4px;
  color:var(--ink);
}
.login-card .sub{text-align:center;font-size:12.5px;color:var(--ink-faint);margin-bottom:30px;letter-spacing:.06em}

.field{margin-bottom:18px}
.field label{
  display:block;font-size:12px;letter-spacing:.12em;color:var(--ink-soft);
  margin-bottom:8px;
}
.field .control{position:relative}
.field input{
  width:100%;height:46px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:6px;
  padding:0 44px 0 14px;
  color:var(--ink);font-size:14px;font-family:var(--sans);
  letter-spacing:.04em;
  transition:.3s;
}
.field input::placeholder{color:rgba(236,228,214,.32)}
.field input:focus{
  outline:none;border-color:var(--gold);
  background:rgba(255,255,255,.06);
  box-shadow:0 0 0 3px rgba(201,168,106,.14);
}
.field .toggle{
  position:absolute;right:12px;top:50%;transform:translateY(-50%);
  width:22px;height:22px;cursor:pointer;opacity:.5;transition:.3s;
  display:flex;align-items:center;justify-content:center;
}
.field .toggle:hover{opacity:1}
.field .toggle svg{width:18px;height:18px;fill:none;stroke:var(--gold-soft);stroke-width:1.6}

.row{
  display:flex;align-items:center;justify-content:space-between;
  margin:4px 2px 22px;font-size:12.5px;
}
.row .remember{display:flex;align-items:center;gap:8px;color:var(--ink-soft);cursor:pointer;user-select:none}
.row .remember input{width:15px;height:15px;accent-color:var(--gold);cursor:pointer}
.row a{color:var(--gold-soft);text-decoration:none;transition:.3s}
.row a:hover{color:var(--gold-bright)}

.btn-submit{
  width:100%;height:48px;border:none;cursor:pointer;
  border-radius:6px;
  font-family:var(--sans);font-size:14px;letter-spacing:.24em;
  color:#2a1f12;font-weight:600;
  background:linear-gradient(135deg,var(--gold),var(--gold-bright));
  box-shadow:0 10px 30px rgba(201,168,106,.32);
  transition:.3s;
}
.btn-submit:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-submit:active{transform:translateY(0)}
.btn-submit:disabled{cursor:not-allowed;filter:none;transform:none;opacity:.6}
.btn-submit.is-cooling{
  background:rgba(201,168,106,.16);
  color:var(--gold-soft);
  border:1px solid var(--line-strong);
  box-shadow:none;
  font-variant-numeric:tabular-nums;
}

/* ===== 人机校验 ===== */
.captcha-field .captcha-control{display:flex;align-items:center;gap:10px}
.captcha-field .captcha-q{
  flex:0 0 auto;min-width:104px;height:46px;line-height:44px;text-align:center;
  border:1px dashed var(--line-strong);border-radius:6px;
  font-size:14px;letter-spacing:.08em;color:var(--gold-bright);
  background:rgba(201,168,106,.06);font-variant-numeric:tabular-nums;
  user-select:none;
}
.captcha-field input{flex:1 1 auto;padding:0 12px}
.captcha-field .captcha-refresh{
  flex:0 0 auto;width:38px;height:46px;cursor:pointer;
  border:1px solid var(--line);border-radius:6px;
  background:rgba(255,255,255,.04);color:var(--gold-soft);
  font-size:16px;line-height:1;transition:.3s;
}
.captcha-field .captcha-refresh:hover{color:var(--gold-bright);border-color:var(--gold)}
.captcha-field .captcha-tip{
  margin-top:8px;font-size:11.5px;letter-spacing:.04em;color:var(--ink-faint);
}

/* ===== 蜜罐字段：对真人不可见，对自动填表脚本可见 ===== */
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden;opacity:0}

.msg{
  margin-top:16px;min-height:18px;font-size:12.5px;text-align:center;
  letter-spacing:.04em;transition:.3s;
}
.msg.error{color:#e6a3a0}
.msg.ok{color:var(--gold-bright)}

.login-foot{
  text-align:center;font-size:11px;color:var(--ink-faint);
  letter-spacing:.08em;margin-top:18px;
}

/* ============ RESPONSIVE ============ */
@media(max-width:600px){
  .topbar{padding:18px 20px}
  .topbar nav{gap:18px}
  .topbar nav a{font-size:12px}
  .login-stage{padding:104px 16px 40px}
  .login-card{padding:32px 24px}
}