/* ===================== 登录页 ===================== */
/* 包含：.gate、.gate .lg-*（lg-card/lg-tabs/lg-tab/lg-indicator/lg-panel/lg-forms/lg-field/lg-input-wrap/
   lg-eye/lg-btn-primary/lg-btn-code/lg-link/lg-row-between/lg-remember/lg-agree/lg-code-row/lg-reveal/
   lg-sub/lg-brand/lg-dot/lg-mode-btn 等）、@keyframes cardIn */

.gate{position:fixed;inset:0;z-index:80;background:var(--bg);
  display:grid;place-items:center;padding:24px}
.gate .g-card{background:var(--md-surface);border-radius:var(--radius-lg);padding:38px 32px;text-align:center;max-width:380px;
  box-shadow:var(--shadow-lg)}
.gate .g-card .dot{width:52px;height:52px;border-radius:14px;background:var(--grad-primary);
  margin:0 auto 14px;display:grid;place-items:center}
.gate .g-card .dot svg{width:26px;height:26px;color:#fff}
.gate h2{font-size:18px;margin-bottom:8px;font-weight:700}
.gate p{font-size:13px;color:var(--muted);margin-bottom:22px;line-height:1.6}
.gate a{display:inline-block;padding:12px 26px;border-radius:var(--radius-sm);font-size:14.5px;font-weight:700;color:#fff;
  background:var(--grad-primary);text-decoration:none;transition:all .15s;box-shadow:var(--shadow-brand)}
.gate a:hover{background:var(--grad-primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-brand-hover)}

.gate .lg-card a{display:inline;padding:0;border-radius:0;font-size:inherit;font-weight:600;color:var(--md-primary);
  background:transparent;box-shadow:none;text-decoration:none;transition:opacity .15s}
.gate .lg-card a:hover{background:transparent;transform:none;box-shadow:none;opacity:.75;text-decoration:underline;text-underline-offset:3px}

.gate .lg-card{width:100%;max-width:440px;background:rgba(255,255,255,.92);backdrop-filter:blur(20px) saturate(1.4);
  -webkit-backdrop-filter:blur(20px) saturate(1.4);
  border:1px solid var(--md-outline-var);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);
  padding:42px 36px 30px;position:relative;overflow:hidden;animation:cardIn .55s cubic-bezier(.2,.9,.3,1) both}
@keyframes cardIn{from{opacity:0;transform:translateY(16px) scale(.98)}to{opacity:1;transform:none}}
.gate .lg-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-primary);opacity:.92}
.gate .lg-brand{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.gate .lg-brand .lg-dot{width:38px;height:38px;border-radius:12px;background:var(--grad-primary);
  box-shadow:var(--shadow-brand);position:relative;display:grid;place-items:center}
.gate .lg-brand .lg-dot::after{content:"";position:absolute;inset:10px;border-radius:7px;background:rgba(255,255,255,.92)}
.gate .lg-brand h1{font-size:21px;font-weight:700;letter-spacing:.4px;background:var(--grad-primary);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.gate .lg-sub{color:var(--muted);font-size:13.5px;margin:2px 0 24px;display:flex;align-items:center;gap:6px}
.gate .lg-sub::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--md-primary);box-shadow:0 0 8px rgba(var(--brand-rgb),.6)}
.gate .lg-tabs{position:relative;display:flex;background:var(--md-primary-container);
  border-radius:var(--md-rs-full);padding:5px;margin-bottom:24px}
.gate .lg-tab{flex:1;text-align:center;padding:10px 0;font-size:14px;font-weight:600;
  color:var(--md-on-primary-container);cursor:pointer;position:relative;z-index:2;
  transition:color .35s ease;user-select:none;opacity:.7}
.gate .lg-tab:hover{opacity:1}
.gate .lg-tab.active{color:#fff;opacity:1}
.gate .lg-indicator{position:absolute;top:5px;bottom:5px;left:5px;width:calc((100% - 10px)/3);
  background:var(--grad-primary);border-radius:var(--md-rs-full);z-index:1;
  transition:transform .42s cubic-bezier(.2,.9,.3,1);box-shadow:0 4px 12px -2px rgba(var(--brand-rgb),.55)}
.gate .lg-forms{position:relative;transition:height .42s cubic-bezier(.2,.9,.3,1)}
.gate .lg-panel{position:absolute;top:0;left:0;width:100%;opacity:0;transform:translateX(24px);
  transition:opacity .38s ease,transform .42s cubic-bezier(.2,.9,.3,1);pointer-events:none}
.gate .lg-panel.active{opacity:1;transform:translateX(0);pointer-events:auto;position:relative}
.gate .lg-field{margin-bottom:16px}
.gate .lg-field label{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin-bottom:7px;letter-spacing:.2px}
.gate .lg-input-wrap{position:relative}
.gate .lg-input-wrap input[type=text],.gate .lg-input-wrap input[type=password],.gate .lg-input-wrap input[type=email]{
  width:100%;padding:13px 14px;font-size:14.5px;color:var(--ink);
  border:1.5px solid var(--md-outline-var);border-radius:var(--md-rs-sm);background:var(--md-surface-container-low);
  transition:border-color .2s,box-shadow .2s,background .2s;outline:none}
.gate .lg-input-wrap input::placeholder{color:var(--muted-2)}
.gate .lg-input-wrap input:focus{border-color:var(--md-primary);background:var(--md-surface);
  box-shadow:0 0 0 4px rgba(var(--brand-rgb),.13)}
.gate .lg-input-wrap input.with-eye{padding-right:46px}
.gate .lg-eye{position:absolute;right:8px;top:50%;transform:translateY(-50%);
  width:32px;height:32px;display:grid;place-items:center;border:none;cursor:pointer;
  background:transparent;color:var(--muted-2);border-radius:9px;transition:color .2s,background .2s}
.gate .lg-eye:hover{color:var(--md-primary);background:var(--md-primary-container)}
.gate .lg-eye svg{width:19px;height:19px}
.gate .lg-code-row{display:flex;gap:10px}
.gate .lg-code-row .lg-input-wrap{flex:1}
.gate .lg-btn-code{flex:none;padding:0 16px;border:none;cursor:pointer;white-space:nowrap;
  font-size:13px;font-weight:600;color:var(--md-on-primary);background:var(--grad-primary);
  border-radius:var(--md-rs-sm);transition:all .2s;box-shadow:0 4px 10px -2px rgba(var(--brand-rgb),.4)}
.gate .lg-btn-code:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 14px -2px rgba(var(--brand-rgb),.5)}
.gate .lg-btn-code:disabled{background:var(--md-surface-container-high);color:var(--muted-2);cursor:not-allowed;box-shadow:none}
.gate .lg-reveal{overflow:hidden;max-height:0;opacity:0;transform:translateY(-6px);
  transition:max-height .42s ease,opacity .35s ease,transform .35s ease,margin .3s}
.gate .lg-reveal.show{max-height:200px;opacity:1;transform:translateY(0);margin-top:2px}
.gate .lg-row-between{display:flex;align-items:center;justify-content:space-between;margin:4px 0 22px}
.gate .lg-remember{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:13px;color:var(--muted);user-select:none}
.gate .lg-remember input{width:17px;height:17px;accent-color:var(--md-primary);cursor:pointer}
.gate .lg-link{color:var(--md-primary);font-size:13px;font-weight:600;cursor:pointer;background:none;border:none;transition:opacity .15s}
.gate .lg-link:hover{opacity:.75;text-decoration:underline;text-underline-offset:3px}
.gate .lg-btn-primary{width:100%;padding:14px 0;border:none;border-radius:var(--md-rs-full);cursor:pointer;
  font-size:15.5px;font-weight:700;color:var(--md-on-primary);letter-spacing:.5px;
  background:var(--grad-primary);box-shadow:var(--shadow-brand);transition:transform .15s,box-shadow .2s;position:relative;overflow:hidden}
.gate .lg-btn-primary::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.3) 50%,transparent 70%);
  transform:translateX(-100%);transition:transform .6s}
.gate .lg-btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-brand-hover)}
.gate .lg-btn-primary:hover::after{transform:translateX(100%)}
.gate .lg-btn-primary:disabled{opacity:.6;cursor:wait;transform:none}
.gate .lg-btn-primary.is-loading{color:transparent!important;opacity:1}
.gate .lg-btn-primary.is-loading::after{content:'';position:absolute;inset:auto;top:50%;left:50%;
  width:18px;height:18px;margin:-9px 0 0 -9px;background:none;
  border:2px solid rgba(255,255,255,.5);border-top-color:#fff;border-radius:50%;
  transform:translateX(0);animation:spin .6s linear infinite}
.gate .lg-btn-code{position:relative}
.gate .lg-btn-code.is-loading{color:transparent!important}
.gate .lg-btn-code.is-loading::after{content:'';position:absolute;inset:auto;top:50%;left:50%;
  width:14px;height:14px;margin:-7px 0 0 -7px;
  border:2px solid rgba(255,255,255,.5);border-top-color:#fff;border-radius:50%;
  animation:spin .6s linear infinite}

.gate .lg-agree{display:flex;align-items:flex-start;gap:9px;margin:4px 0 18px;cursor:pointer;
  font-size:12.5px;color:var(--muted);line-height:1.55;user-select:none}
.gate .lg-agree input{flex:none;width:17px;height:17px;margin-top:1px;accent-color:var(--md-primary);cursor:pointer}

.gate .lg-tools{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px}
.gate .lg-tool-grp{display:flex;align-items:center;gap:8px}
.gate .lg-tool-label{font-size:12px;color:var(--muted);user-select:none}
.gate .lg-theme-btn{width:22px;height:22px;border-radius:50%;border:2px solid transparent;cursor:pointer;
  position:relative;padding:0;box-shadow:0 2px 5px rgba(0,0,0,.15);transition:transform .15s,border-color .15s}
.gate .lg-theme-btn:hover{transform:scale(1.12)}
.gate .lg-theme-btn.active{border-color:rgba(255,255,255,.85);box-shadow:0 0 0 1.5px var(--md-primary),0 2px 5px rgba(0,0,0,.2)}
.gate .lg-theme-btn.active::after{content:"";position:absolute;top:50%;left:50%;width:8px;height:4px;
  border-left:2px solid #fff;border-bottom:2px solid #fff;transform:translate(-50%,-70%) rotate(-45deg)}
.gate .lg-mode-btn{width:32px;height:32px;border-radius:50%;border:1.5px solid var(--md-outline-var);
  background:var(--md-surface);color:var(--muted);cursor:pointer;display:grid;place-items:center;transition:all .15s}
.gate .lg-mode-btn:hover{border-color:var(--md-primary);color:var(--md-primary)}
.gate .lg-mode-btn.active{background:var(--grad-primary);color:#fff;border-color:transparent;box-shadow:var(--shadow-brand)}
.gate .lg-mode-btn svg{width:17px;height:17px}

.gate .g-card{overflow:hidden}