:root {
  --bg: #020408;
  --cyan: #19c37d; --blue: #0fa47f; --violet: #8be9c4;
  --accent: #19c37d; --ok: #00e676; --err: #ff5252; --warn: #ffd740;
  --mute: #6e88a0; --dim: #3a5068;
  --panel: #080d14;
  --line: rgba(255,255,255,0.07); --line2: rgba(255,255,255,0.14);
  --glowrgb: 25,195,125;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%}
body{
  background:var(--bg);color:#e2eaf5;
  font-family:var(--sans);
  min-height:100vh;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
#stars{position:fixed;inset:0;z-index:0;pointer-events:none}
.ambient{
  position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(600px 400px at 20% 15%, rgba(var(--glowrgb),0.06), transparent 60%),
    radial-gradient(500px 450px at 80% 85%, rgba(139,233,196,0.04), transparent 60%),
    radial-gradient(400px 350px at 50% 50%, rgba(var(--glowrgb),0.03), transparent 55%);
}

/* ── Top bar: brand + language switch only ── */
.topbar{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:flex-end;gap:12px;
  max-width:1200px;margin:0 auto;padding:22px 40px 0;
}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.brand-logo{width:22px;height:22px;flex-shrink:0}
.brand-name{font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.04em;color:#cfe0f2}
.lang-switch{
  display:inline-flex;align-items:center;gap:4px;
  padding:5px 10px;border-radius:11px;
  background:rgba(8,13,20,.72);border:1px solid var(--line);backdrop-filter:blur(12px);
  font-family:var(--mono);font-size:12px;
}
.lang-icon{width:14px;height:14px;color:var(--dim);margin-right:4px}
.lang-btn{
  background:transparent;border:none;cursor:pointer;color:var(--mute);
  font-family:var(--mono);font-size:12px;font-weight:600;padding:5px 8px;border-radius:7px;
  transition:color .15s,background .15s;
}
.lang-btn:hover{color:#cfe0f2;background:rgba(255,255,255,.04)}
.lang-btn.active{color:#fff;background:rgba(var(--glowrgb),.16);box-shadow:inset 0 0 0 1px rgba(var(--glowrgb),.32)}
.lang-sep{color:var(--dim)}

/* Layout */
.wrap{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:center;
  min-height:calc(100vh - 70px);padding:36px 48px 72px;gap:96px;
  max-width:1340px;margin:0 auto;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.intro{flex:0 0 460px;max-width:460px;display:flex;flex-direction:column;animation:fadeUp .5s cubic-bezier(.16,1,.3,1)}
.header-row{display:flex;align-items:center;gap:18px;margin-bottom:10px}
.logo-wrap{flex-shrink:0}
.logo-svg{width:56px;height:56px;color:#fff;filter:drop-shadow(0 0 30px rgba(255,255,255,0.3))}
.headline h1{
  font-family:var(--mono);
  font-size:clamp(28px,4vw,46px);font-weight:600;letter-spacing:-0.025em;
  color:#fff;line-height:1.12;
}
.headline h1 span{
  background:linear-gradient(135deg,var(--cyan) 0%,var(--blue) 50%,var(--violet) 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.tagline{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);
  font-size:11px;letter-spacing:.28em;text-transform:uppercase;color:var(--cyan);
  margin-bottom:26px;
}
.tagline::before,.tagline::after{
  content:"";display:block;width:36px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(var(--glowrgb),0.45),transparent);
}
.desc{color:var(--mute);font-size:15px;line-height:1.8;margin-bottom:26px;max-width:420px}
.desc code{
  font-family:var(--mono);color:var(--cyan);font-size:12px;
  background:rgba(var(--glowrgb),.09);padding:2px 6px;border-radius:4px;letter-spacing:.02em;
}
.req{display:flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12px;color:var(--cyan);margin-bottom:18px}
.req svg{width:15px;height:15px;flex-shrink:0}
.steps-note{font-family:var(--mono);font-size:12px;color:var(--dim);line-height:1.7}

/* ── Status strip ── */
.quota{
  display:flex;align-items:center;gap:14px;flex-wrap:nowrap;
  margin-bottom:22px;padding:13px 16px;border-radius:12px;
  background:rgba(var(--glowrgb),.05);border:1px solid rgba(var(--glowrgb),.18);
  font-family:var(--mono);font-size:12px;
}
.quota-item{display:flex;align-items:baseline;gap:7px;min-width:0;white-space:nowrap}
.quota-item .quota-v{overflow:hidden;text-overflow:ellipsis}
.quota-k{color:var(--dim);font-size:10px;letter-spacing:.16em;text-transform:uppercase}
.quota-v{color:#fff;font-size:14px;font-weight:700}
.quota-v.sub{color:var(--cyan)}
.quota-v.st{display:inline-flex;align-items:center;gap:7px}
.quota-v.st .dot{width:8px;height:8px;border-radius:50%;background:var(--dim);box-shadow:0 0 8px rgba(255,255,255,.15)}
.quota-v.st.tone-ok .dot{background:var(--ok);box-shadow:0 0 10px rgba(0,230,118,.6)}
.quota-v.st.tone-warn .dot{background:var(--warn);box-shadow:0 0 10px rgba(255,215,64,.6)}
.quota-v.st.tone-err .dot{background:var(--err);box-shadow:0 0 10px rgba(255,82,82,.6)}
.quota-v.st.tone-ok{color:#69f0ae}
.quota-v.st.tone-warn{color:#ffe082}
.quota-v.st.tone-err{color:#ff8a80}
.quota-sep{width:1px;height:22px;background:var(--line2)}
.quota-refresh{
  margin-left:auto;background:transparent;border:none;cursor:pointer;color:var(--dim);
  display:flex;align-items:center;padding:4px;border-radius:6px;transition:color .15s;
}
.quota-refresh:hover{color:var(--cyan)}
.quota-refresh.spin svg{animation:spin .8s linear infinite}
.quota-refresh svg{width:13px;height:13px}

/* Card */
.card-wrap{flex:1;max-width:660px;min-width:380px;animation:fadeUp .5s cubic-bezier(.16,1,.3,1)}
.card-frame{
  position:relative;border-radius:22px;padding:1.5px;
  background:conic-gradient(from var(--ang,0deg),var(--cyan),rgba(var(--glowrgb),.5),var(--violet),rgba(var(--glowrgb),.3),var(--cyan));
  animation:rotate 8s linear infinite;--ang:0deg;
}
@property --ang{syntax:'<angle>';initial-value:0deg;inherits:false}
@keyframes rotate{to{--ang:360deg}}
.card-frame::after{
  content:"";position:absolute;inset:-2px;border-radius:23px;
  background:conic-gradient(from var(--ang,0deg),transparent,var(--cyan),transparent,var(--violet),transparent);
  opacity:.22;filter:blur(20px);animation:rotate 8s linear infinite;z-index:-1;pointer-events:none;
}
.card-frame.dim{animation:none;background:var(--line2)}
.card-frame.dim::after{display:none}
.card{
  background:var(--panel);border-radius:20px;padding:38px 36px;
  position:relative;z-index:1;
  box-shadow:0 24px 80px rgba(0,0,0,.6),inset 0 1px 0 rgba(255,255,255,.02);
}

/* Maintenance banner */
.maint{
  display:none;align-items:flex-start;gap:11px;
  margin-bottom:22px;padding:14px 16px;border-radius:12px;
  background:rgba(255,215,64,.07);border:1px solid rgba(255,215,64,.26);
  font-family:var(--mono);font-size:12px;line-height:1.7;color:var(--warn);
}
.maint.show{display:flex}
.maint svg{width:16px;height:16px;flex-shrink:0;margin-top:2px}
.maint b{display:block;font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:3px}
.maint span{color:#c9b169;font-size:11.5px}

/* Fields */
.field{margin-bottom:26px}
.field-label-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;gap:10px;flex-wrap:wrap}
.field-label{font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim)}
.field-hint{font-family:var(--mono);font-size:10.5px;color:var(--dim)}
.field-link{
  display:inline-flex;align-items:center;gap:5px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;color:var(--cyan);
  text-decoration:none;padding:4px 9px;border-radius:6px;
  background:rgba(var(--glowrgb),.07);border:1px solid rgba(var(--glowrgb),.18);
  transition:background .15s,box-shadow .15s;
}
.field-link:hover{background:rgba(var(--glowrgb),.15);box-shadow:0 0 12px rgba(var(--glowrgb),.2)}
.field-link svg{width:11px;height:11px}
.field-help{font-size:12.5px;line-height:1.6;color:var(--mute);margin:0 0 10px}
.inp{
  width:100%;border:1px solid var(--line);border-radius:12px;
  background:rgba(2,4,8,.6);color:#d0dff0;padding:16px 18px;
  font-family:var(--mono);font-size:13.5px;line-height:1.6;outline:none;
  transition:border-color .2s,box-shadow .2s;resize:vertical;
}
.inp::placeholder{color:var(--dim)}
.inp:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(var(--glowrgb),.1)}
.inp:disabled{cursor:not-allowed;opacity:.6}
textarea.inp{min-height:132px}
.key-row{display:flex;gap:10px;align-items:stretch}
.key-row .inp{flex:1;min-width:0;text-transform:uppercase}
.ck-btn{
  flex-shrink:0;border:none;border-radius:12px;padding:0 20px;cursor:pointer;
  font-family:var(--mono);font-size:13px;font-weight:600;
  color:#02101a;background:linear-gradient(135deg,var(--cyan),var(--blue));
  display:flex;align-items:center;justify-content:center;gap:8px;
  box-shadow:0 6px 22px rgba(var(--glowrgb),.25);transition:transform .15s,opacity .15s;
}
.ck-btn:hover:not(:disabled){transform:translateY(-1px)}
.ck-btn:disabled{cursor:not-allowed;opacity:.55}

/* Session URL box */
.sess-url{display:flex;gap:8px;align-items:stretch;margin-bottom:10px}
.sess-url-btn{
  flex:1;min-width:0;display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:10px;cursor:pointer;text-align:left;
  background:rgba(2,4,8,.6);border:1px dashed rgba(var(--glowrgb),.35);color:#cfe0f2;
  font-family:var(--mono);font-size:12px;transition:border-color .15s,background .15s;
}
.sess-url-btn:hover{border-color:var(--cyan);background:rgba(var(--glowrgb),.06)}
.sess-url-btn.is-copied{border-style:solid;border-color:var(--ok)}
.sess-url-str{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.sess-url-copy{flex-shrink:0;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan)}
.sess-url-btn.is-copied .sess-url-copy{color:var(--ok)}

/* Session preview */
.sess-preview{
  display:none;align-items:flex-start;gap:8px;margin-top:10px;padding:10px 12px;border-radius:10px;
  font-family:var(--mono);font-size:12px;line-height:1.55;
  background:rgba(0,230,118,.06);border:1px solid rgba(0,230,118,.2);color:#69f0ae;
}
.sess-preview.show{display:flex}
.sess-preview.err{background:rgba(255,82,82,.06);border-color:rgba(255,82,82,.22);color:#ff8a80}
.sess-preview svg{width:14px;height:14px;flex-shrink:0;margin-top:2px}
.sess-preview strong{color:#fff;font-weight:600}
.sess-preview .exp{margin-left:auto;color:var(--mute);white-space:nowrap}

/* Info box (CDK check) */
.info-box{display:none;margin-top:10px;padding:12px 14px;border-radius:10px;font-family:var(--mono);font-size:12px;line-height:1.7;
  background:rgba(255,255,255,.03);border:1px solid var(--line2);color:#cfe0f2}
.info-box.show{display:block}
.info-box.err{background:rgba(255,82,82,.06);border-color:rgba(255,82,82,.22);color:#ff8a80}
.info-row{display:flex;justify-content:space-between;gap:12px}
.info-row .k{color:var(--dim);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;flex-shrink:0}
.info-row .v{color:#fff;font-weight:600;text-align:right}
.badge{display:inline-block;padding:1px 8px;border-radius:999px;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;border:1px solid}
.badge.ok{color:#69f0ae;border-color:rgba(0,230,118,.4);background:rgba(0,230,118,.08)}
.badge.warn{color:#ffe082;border-color:rgba(255,215,64,.4);background:rgba(255,215,64,.08)}
.badge.err{color:#ff8a80;border-color:rgba(255,82,82,.4);background:rgba(255,82,82,.08)}

/* Button */
.btn{
  width:100%;height:58px;border:none;border-radius:15px;cursor:pointer;
  font-family:var(--mono);font-size:14px;font-weight:600;letter-spacing:.06em;
  color:#02101a;background:linear-gradient(135deg,var(--cyan) 0%,var(--blue) 100%);
  box-shadow:0 8px 32px rgba(var(--glowrgb),.32);
  display:flex;align-items:center;justify-content:center;gap:10px;
  position:relative;overflow:hidden;transition:transform .15s,box-shadow .2s;
}
.btn::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.3) 50%,transparent 70%);
  transform:translateX(-150%);transition:transform .7s cubic-bezier(.3,1,.3,1);
}
.btn:hover:not(:disabled)::after{transform:translateX(150%)}
.btn:hover:not(:disabled){box-shadow:0 12px 40px rgba(var(--glowrgb),.5);transform:translateY(-1px)}
.btn:active:not(:disabled){transform:translateY(1px)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn .spinner{
  width:16px;height:16px;border:2px solid rgba(2,16,26,.25);
  border-top-color:#02101a;border-radius:50%;animation:spin .6s linear infinite;display:none;
}
.btn.loading .spinner{display:block}
@keyframes spin{to{transform:rotate(360deg)}}

/* Error box */
.result{margin:0 0 16px;padding:12px 16px;border-radius:12px;font-family:var(--mono);font-size:12.5px;line-height:1.6;display:none}
.result.show{display:flex;align-items:flex-start;gap:8px}
.result.fail{background:rgba(255,82,82,.06);border:1px solid rgba(255,82,82,.22);color:#ff8a80}
.result svg{width:14px;height:14px;flex-shrink:0;margin-top:3px}

/* Task monitor */
.task{display:none;margin-top:20px;border-radius:14px;border:1px solid var(--line2);background:rgba(2,4,8,.5);overflow:hidden}
.task.show{display:block;animation:fadeUp .35s cubic-bezier(.16,1,.3,1)}
.task-head{display:flex;align-items:center;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line)}
.task-head .ic{width:22px;height:22px;flex-shrink:0;display:flex;align-items:center;justify-content:center}
.task-head .ic svg{width:22px;height:22px}
.task-head.pending .ic{color:var(--cyan)}
.task-head.pending .ic svg{animation:spin 1s linear infinite}
.task-head.success .ic{color:var(--ok)}
.task-head.failed .ic{color:var(--err)}
.task-title{font-family:var(--mono);font-size:13.5px;font-weight:700;color:#fff}
.task-sub{font-size:12.5px;color:var(--mute);margin-top:2px;line-height:1.5}
.task-head.failed .task-sub{color:#ff8a80}
.task-close{margin-left:auto;background:transparent;border:1px solid var(--line2);color:var(--mute);border-radius:8px;padding:5px 10px;cursor:pointer;font-family:var(--mono);font-size:11px;flex-shrink:0}
.task-close:hover{color:#fff;border-color:var(--cyan)}
.task-body{padding:14px 16px}
.progress{height:4px;border-radius:99px;background:rgba(255,255,255,.06);overflow:hidden;position:relative}
.progress .bar{position:absolute;inset:0;width:40%;border-radius:99px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);animation:slide 1.4s ease-in-out infinite}
@keyframes slide{0%{transform:translateX(-100%)}100%{transform:translateX(350%)}}
.stages{display:flex;align-items:center;gap:6px;margin-top:12px;font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim);flex-wrap:wrap}
.stage{padding:2px 8px;border-radius:999px;border:1px solid var(--line)}
.stage.active{color:var(--cyan);border-color:rgba(var(--glowrgb),.4);background:rgba(var(--glowrgb),.08)}
.stage-sep{flex:0 0 10px;height:1px;background:var(--line2)}
.task-note{margin-top:12px;font-family:var(--mono);font-size:11px;color:var(--dim);line-height:1.6}
.kv{display:flex;align-items:center;gap:10px;padding:7px 0;border-bottom:1px solid var(--line);font-size:12.5px}
.kv:last-child{border-bottom:0}
.kv .k{flex:0 0 110px;color:var(--dim);font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase}
.kv .v{flex:1;min-width:0;color:#fff;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.kv .v.mono{font-family:var(--mono);font-size:12px}
.kv .cp{flex-shrink:0;background:transparent;border:1px solid var(--line2);color:var(--mute);border-radius:6px;width:26px;height:26px;display:flex;align-items:center;justify-content:center;cursor:pointer}
.kv .cp:hover{color:var(--cyan);border-color:var(--cyan)}
.kv .cp svg{width:12px;height:12px}
.task-hint{margin-top:12px;display:flex;gap:8px;align-items:flex-start;padding:10px 12px;border-radius:10px;font-size:12.5px;line-height:1.6;color:#cfe0f2;background:rgba(var(--glowrgb),.06);border:1px solid rgba(var(--glowrgb),.18)}
.task-hint svg{width:14px;height:14px;flex-shrink:0;margin-top:3px;color:var(--cyan)}
.task-hint.err{color:#ffb3ad;background:rgba(255,82,82,.06);border-color:rgba(255,82,82,.22)}
.task-hint.err svg{color:var(--err)}

/* Toast */
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(20px);opacity:0;pointer-events:none;
  padding:10px 16px;border-radius:10px;background:#0f1a26;border:1px solid var(--line2);color:#fff;
  font-family:var(--mono);font-size:12px;z-index:50;transition:opacity .2s,transform .2s;box-shadow:0 10px 30px rgba(0,0,0,.5)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

@media(max-width:980px){
  .topbar{padding:18px 20px 0}
  .wrap{flex-direction:column;gap:32px;padding:24px 20px 48px;min-height:0}
  .intro{flex:0 0 auto;max-width:100%;text-align:center;align-items:center}
  .header-row{justify-content:center;flex-wrap:wrap}
  .intro .desc{max-width:100%}
  .intro .tagline,.intro .req{justify-content:center}
  .card-wrap{min-width:0;width:100%}
}
@media(max-width:480px){
  .card{padding:22px 18px}
  .quota{gap:10px;padding:11px 12px}
  .quota-v{font-size:13px}
  .kv .k{flex-basis:90px}
  .brand-name{display:none}
}

/* ── 套餐选择：纯引导，档位由卡密前缀在服务端决定 ── */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.plan-card{
  display:flex;align-items:center;justify-content:center;min-width:0;
  padding:16px 14px;border-radius:14px;cursor:pointer;text-align:center;
  background:rgba(255,255,255,0.02);border:1px solid var(--line);
  transition:background .15s ease,border-color .15s ease;
}
.plan-card:hover{border-color:var(--line2);background:rgba(255,255,255,0.04)}
.plan-card .pc-name{font-family:var(--sans);font-size:14.5px;font-weight:600;line-height:1.3;color:#cfe0f2}
.plan-card.is-active{background:rgba(var(--glowrgb),.10);border-color:var(--accent)}
.plan-card.is-active .pc-name{color:var(--accent)}
.info-row .v-dim{color:var(--mute)}
@media (max-width:1180px){
  .plan-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}

/* [p2-c2 2026-10-05] 四档套餐（Plus / Pro 5x / Pro 20x / Pro 500）→ 2×2；比 3 列媒体查询特异度高，各宽度都生效 */
.plan-grid.plan-grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}