:root{
  --ink:#070912;
  --ink-2:#0d1120;
  --ink-3:#141a2e;
  --line:rgba(198,166,100,.22);
  --line-soft:rgba(198,166,100,.10);
  --gold:#c6a664;
  --gold-bright:#e6cf9a;
  --gold-dim:#8a7443;
  --text:#e8e3d6;
  --text-dim:#9c9789;
  --text-mute:#6b6a63;
  --danger:#c96a5a;
  --radius:18px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Songti SC","STSong","Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}

html,body{min-height:100%}

body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* ---------- 星野背景 ---------- */
.sky{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(1200px 700px at 50% -10%, rgba(74,66,140,.28), transparent 62%),
    radial-gradient(900px 600px at 12% 88%, rgba(96,58,102,.20), transparent 60%),
    radial-gradient(900px 600px at 88% 82%, rgba(40,78,110,.20), transparent 60%),
    linear-gradient(180deg,#05060d 0%,#070912 45%,#05060c 100%);
}
.sky::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 18%, rgba(255,250,235,.85), transparent 60%),
    radial-gradient(1.2px 1.2px at 28% 44%, rgba(255,250,235,.55), transparent 60%),
    radial-gradient(1.8px 1.8px at 41% 12%, rgba(255,250,235,.75), transparent 60%),
    radial-gradient(1.1px 1.1px at 57% 31%, rgba(255,250,235,.45), transparent 60%),
    radial-gradient(1.5px 1.5px at 68% 66%, rgba(255,250,235,.65), transparent 60%),
    radial-gradient(1.2px 1.2px at 79% 22%, rgba(255,250,235,.50), transparent 60%),
    radial-gradient(1.7px 1.7px at 88% 51%, rgba(255,250,235,.70), transparent 60%),
    radial-gradient(1.1px 1.1px at 9% 71%, rgba(255,250,235,.40), transparent 60%),
    radial-gradient(1.4px 1.4px at 33% 82%, rgba(255,250,235,.55), transparent 60%),
    radial-gradient(1.2px 1.2px at 61% 88%, rgba(255,250,235,.45), transparent 60%),
    radial-gradient(1.3px 1.3px at 94% 78%, rgba(255,250,235,.50), transparent 60%),
    radial-gradient(1.0px 1.0px at 48% 58%, rgba(255,250,235,.35), transparent 60%);
  animation:twinkle 9s ease-in-out infinite alternate;
}
@keyframes twinkle{from{opacity:.55}to{opacity:1}}

/* 中央仪式圆环 */
.halo{
  position:fixed;
  left:50%;
  top:46%;
  width:min(92vw,720px);
  aspect-ratio:1;
  transform:translate(-50%,-50%);
  z-index:0;
  pointer-events:none;
  opacity:.42;
}
.halo svg{width:100%;height:100%;display:block}
.halo .ring-a{animation:spin 96s linear infinite;transform-origin:50% 50%}
.halo .ring-b{animation:spin 64s linear infinite reverse;transform-origin:50% 50%}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 布局 ---------- */
.shell{
  position:relative;
  z-index:2;
  min-height:100vh;
  min-height:100dvh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  padding:clamp(24px,6vw,64px) 20px calc(24px + env(safe-area-inset-bottom));
}

.brand{
  text-align:center;
  margin-bottom:clamp(28px,5vw,44px);
}
.brand .mark{
  font-family:var(--serif);
  font-size:clamp(30px,7.2vw,46px);
  font-weight:400;
  letter-spacing:.42em;
  text-indent:.42em;
  color:var(--gold-bright);
  margin:0;
  text-shadow:0 0 28px rgba(198,166,100,.35);
}
.brand .cn{
  margin-top:10px;
  font-size:clamp(13px,3.4vw,15px);
  letter-spacing:.34em;
  text-indent:.34em;
  color:var(--text-dim);
}
.brand .rule{
  width:88px;
  height:1px;
  margin:18px auto 0;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
  position:relative;
}
.brand .rule::after{
  content:"";
  position:absolute;
  left:50%;
  top:-2.5px;
  width:5px;height:5px;
  margin-left:-2.5px;
  background:var(--gold-bright);
  transform:rotate(45deg);
  box-shadow:0 0 10px rgba(230,207,154,.8);
}

/* ---------- 卡片 ---------- */
.card{
  width:100%;
  max-width:420px;
  background:linear-gradient(180deg,rgba(20,26,46,.86),rgba(10,13,24,.92));
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(26px,6vw,38px) clamp(20px,5.4vw,32px);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 26px 70px -30px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.05);
  position:relative;
  animation:rise .7s var(--ease) both;
}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

.card::before,
.card::after{
  content:"";
  position:absolute;
  width:16px;height:16px;
  border:1px solid var(--gold-dim);
  opacity:.7;
}
.card::before{left:-1px;top:-1px;border-right:0;border-bottom:0;border-top-left-radius:var(--radius)}
.card::after{right:-1px;bottom:-1px;border-left:0;border-top:0;border-bottom-right-radius:var(--radius)}

.card h2{
  font-family:var(--serif);
  font-size:19px;
  font-weight:400;
  letter-spacing:.16em;
  margin:0 0 8px;
  color:var(--text);
  text-align:center;
}
.card .hint{
  font-size:13px;
  color:var(--text-mute);
  text-align:center;
  margin:0 0 26px;
  letter-spacing:.06em;
}

/* ---------- 输入 ---------- */
.field{position:relative;margin-bottom:16px}
.field label{
  display:block;
  font-size:11px;
  letter-spacing:.22em;
  color:var(--gold-dim);
  margin-bottom:9px;
  text-transform:uppercase;
}
.pw-wrap{
  display:flex;
  align-items:center;
  gap:2px;
  border:1px solid var(--line);
  background:rgba(7,9,18,.72);
  border-radius:12px;
  padding:6px 6px 6px 16px;
  transition:border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.pw-wrap:focus-within{
  border-color:rgba(198,166,100,.6);
  box-shadow:0 0 0 3px rgba(198,166,100,.10);
}
.pw-wrap.err{border-color:rgba(201,106,90,.65);animation:shake .42s}
@keyframes shake{
  0%,100%{transform:none}
  20%{transform:translateX(-6px)}
  40%{transform:translateX(5px)}
  60%{transform:translateX(-3px)}
  80%{transform:translateX(2px)}
}
.pw-wrap input{
  flex:1;
  min-width:0;
  border:0;
  outline:0;
  background:transparent;
  color:var(--gold-bright);
  font-family:var(--serif);
  font-size:22px;
  letter-spacing:.42em;
  text-indent:.06em;
  padding:9px 0;
}
.pw-wrap input::placeholder{
  color:var(--text-mute);
  font-size:14px;
  letter-spacing:.1em;
}

.btn{
  appearance:none;
  border:1px solid rgba(198,166,100,.45);
  background:linear-gradient(180deg,rgba(198,166,100,.18),rgba(198,166,100,.06));
  color:var(--gold-bright);
  font-family:var(--sans);
  font-size:14px;
  letter-spacing:.26em;
  text-indent:.26em;
  padding:13px 18px;
  border-radius:12px;
  cursor:pointer;
  width:100%;
  transition:all .28s var(--ease);
}
.btn:hover{background:linear-gradient(180deg,rgba(198,166,100,.3),rgba(198,166,100,.12));border-color:rgba(198,166,100,.75)}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.45;cursor:not-allowed}

.msg{
  min-height:20px;
  font-size:12.5px;
  color:var(--danger);
  letter-spacing:.05em;
  margin:12px 0 0;
  text-align:center;
  opacity:0;
  transition:opacity .25s;
}
.msg.on{opacity:1}

.foot{
  margin-top:clamp(26px,5vw,40px);
  font-size:11.5px;
  letter-spacing:.18em;
  color:var(--text-mute);
  text-align:center;
}
.foot span{color:var(--gold-dim)}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001s!important;animation-iteration-count:1!important;transition-duration:.001s!important}
}