*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --pine:#2D6A4F;
  --clay:#D97059;
  --clay-h:#C5604A;
  --cream:#FDFBF7;
  --wheat:#F5ECD7;
  --ink:#1C1C1C;
  --stone:#78716C;
  --sage:#E8F0EB;
  --bark:#3E3A35;
  --border:#D6D3CE;
  --light:rgba(0,0,0,0.06);
  --radius:4px;
}

@view-transition{
  navigation:auto;
}

html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans SC",sans-serif;
  background:var(--cream);
  color:var(--ink);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

.logo{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:20px;
  font-weight:800;
  color:var(--pine);
  letter-spacing:0.03em;
}
.logo-mark{width:32px;height:32px;flex-shrink:0}
.logo-mark .flow-stroke{stroke-dasharray:80 160;animation:flowDash 2.4s ease-in-out infinite}
.logo-mark .flow-stroke:nth-child(2){animation-delay:0.8s}
.logo-mark .flow-stroke:nth-child(3){animation-delay:1.6s}
@keyframes flowDash{0%{stroke-dashoffset:0}50%{stroke-dashoffset:-240}100%{stroke-dashoffset:0}}
.logo-glow{animation:glowPulse 3s ease-in-out infinite}
@keyframes glowPulse{0%,100%{opacity:0.5}50%{opacity:1}}

.nav{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:100;
  padding:0 5vw;
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  background:rgba(253,251,247,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--light);
  transition:box-shadow 0.3s,background-color 0.3s;
}
.nav-links{
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-actions{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:10px;
  min-width:192px;
  flex-shrink:0;
  white-space:nowrap;
}
.nav-actions .btn{
  min-width:78px;
  justify-content:center;
}
.user-menu{
  position:relative;
  flex-shrink:0;
}
.user-menu-trigger{
  min-width:132px;
  justify-content:space-between;
  gap:10px;
  padding-right:12px;
}
.user-menu-trigger .user-name{
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  max-width:82px;
}
.user-menu-trigger .caret{
  width:0;
  height:0;
  border-left:4px solid transparent;
  border-right:4px solid transparent;
  border-top:5px solid currentColor;
  flex-shrink:0;
  transition:transform 0.2s ease;
}
.user-menu.open .caret{transform:rotate(180deg)}
.user-menu-panel{
  position:absolute;
  top:calc(100% + 10px);
  right:0;
  min-width:160px;
  padding:8px;
  border:1px solid var(--border);
  background:#fff;
  border-radius:10px;
  box-shadow:0 18px 40px rgba(28,28,28,0.10);
  opacity:0;
  pointer-events:none;
  transform:translateY(-8px);
  transition:opacity 0.18s ease,transform 0.18s ease;
  z-index:120;
}
.user-menu.open .user-menu-panel{
  opacity:1;
  pointer-events:auto;
  transform:translateY(0);
}
.user-menu-panel button{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:flex-start;
  gap:8px;
  padding:10px 12px;
  border:0;
  background:transparent;
  border-radius:8px;
  color:var(--ink);
  font:inherit;
  cursor:pointer;
}
.user-menu-panel button:hover{
  background:var(--sage);
}
.nav-links li{transition:opacity .35s ease,transform .35s ease}
.nav-links a{
  font-size:14px;
  font-weight:500;
  color:var(--stone);
  transition:color 0.2s;
}
.nav-links a:hover,.nav-links a.active{color:var(--pine)}
.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
  padding:4px;
  z-index:101;
}
.nav-toggle span{
  display:block;
  width:22px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:all 0.3s;
}
.nav-toggle.open span:nth-child(1){transform:rotate(45deg)translate(5px,5px)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:rotate(-45deg)translate(5px,-5px)}

.btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 24px;
  border-radius:var(--radius);
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  border:none;
  transition:all 0.2s;
  font-family:inherit;
}
.btn-outline{background:transparent;color:var(--ink);border:1.5px solid var(--border)}
.btn-outline:hover{border-color:var(--pine);color:var(--pine)}
.btn-primary{background:var(--clay);color:#fff}
.btn-primary:hover{background:var(--clay-h);transform:translateY(-1px)}
.btn-lg{padding:14px 32px;font-size:16px}
.btn-sm{padding:7px 16px;font-size:13px}
.btn-hero-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,0.40)}
.btn-hero-outline:hover{border-color:#fff;background:rgba(255,255,255,0.10)}

.field{margin-bottom:16px}
.field label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--bark);
  margin-bottom:5px;
}
.field input,.field select{
  width:100%;
  padding:11px 14px;
  border:1.5px solid var(--border);
  border-radius:var(--radius);
  font-size:15px;
  font-family:inherit;
  background:#fff;
  color:var(--ink);
  outline:none;
  transition:border-color 0.2s,box-shadow 0.2s,background-color 0.2s;
}
.field input::placeholder{color:#A8A29E}
.field input:hover,.field select:hover{background-color:#FCFCFA}
.field input:focus,.field select:focus{border-color:var(--pine);box-shadow:0 0 0 3px rgba(45,106,79,0.08)}

.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.msg{margin-top:14px;padding:12px 14px;border-radius:var(--radius);font-size:14px;text-align:center;display:none}
.msg.success{display:block;background:#ECFDF5;color:#065F46;border:1px solid #A7F3D0}
.msg.error{display:block;background:#FEF2F2;color:#991B1B;border:1px solid #FECACA}

.spinner{
  display:none;
  width:18px;
  height:18px;
  border:2px solid rgba(255,255,255,0.30);
  border-top-color:#fff;
  border-radius:50%;
  animation:spin 0.6s linear infinite;
}
.btn-submit.loading .spinner{display:inline-block}
.btn-submit.loading .btn-label{display:none}
@keyframes spin{to{transform:rotate(360deg)}}
.btn-submit{
  width:100%;
  padding:13px;
  border-radius:var(--radius);
  font-size:16px;
  font-weight:700;
  border:none;
  cursor:pointer;
  background:var(--clay);
  color:#fff;
  font-family:inherit;
  transition:background 0.2s,transform 0.2s;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  margin-top:6px;
}
.btn-submit:hover{background:var(--clay-h);transform:translateY(-1px)}
.btn-submit:disabled{opacity:0.55;cursor:not-allowed;transform:none}

.footer{
  padding:36px 5vw;
  background:var(--ink);
  color:var(--stone);
}
.footer-inner{
  max-width:1100px;
  margin:0 auto;
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:16px;
  font-size:13px;
  position:relative;
}
.footer-left{
  display:flex;
  align-items:center;
  gap:8px;
  font-weight:600;
  color:var(--border);
}
.footer-left:before{content:'';width:6px;height:6px;border-radius:1px;background:var(--clay)}
.footer-copy{position:absolute;left:50%;transform:translateX(-50%);white-space:nowrap}
.footer-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-links a{transition:color 0.2s}
.footer-links a:hover{color:var(--border)}

.page-curtain{
  position:fixed;
  inset:0;
  z-index:999;
  pointer-events:none;
  display:grid;
  grid-template-columns:1fr 1fr;
  visibility:hidden;
}
.page-curtain span{
  background:linear-gradient(180deg, rgba(246,239,227,.98), rgba(240,229,212,.98));
  transform:scaleX(0);
  transition:transform .58s cubic-bezier(.77,0,.18,1);
  box-shadow:inset 0 -1px 0 rgba(0,0,0,.04);
}
.page-curtain span:first-child{transform-origin:left center}
.page-curtain span:last-child{transform-origin:right center}
body.is-entering .page-curtain,
body.page-ready .page-curtain,
body.is-leaving .page-curtain{
  visibility:visible;
}
body.is-entering .page-curtain span,
body.is-leaving .page-curtain span{
  transform:scaleX(1);
}
body.page-ready .page-curtain span{
  transform:scaleX(0);
}
body.is-leaving{
  pointer-events:none;
  cursor:wait;
}
body.is-leaving *{
  cursor:wait;
}
@media(max-width:768px){
  .nav{padding:0 16px;height:60px}
  .nav-toggle{display:flex}
  .nav-actions{
    min-width:auto;
    gap:8px;
  }
  .nav-actions .btn{
    min-width:auto;
    padding:7px 12px;
    font-size:12px;
  }
  .user-menu-trigger{
    min-width:104px;
    padding-right:10px;
  }
  .user-menu-trigger .user-name{
    max-width:54px;
  }
  .user-menu-panel{
    min-width:144px;
  }
  .nav-links{
    position:fixed;
    top:0;left:0;right:0;bottom:0;
    transform:none;
    display:flex;
    flex-direction:row;
    flex-wrap:nowrap;
    justify-content:center;
    align-items:flex-start;
    gap:clamp(5px,1.6vw,12px);
    padding:11px clamp(58px,15vw,88px) 0 clamp(14px,3.5vw,22px);
    opacity:0;
    pointer-events:none;
    transition:opacity 0.3s;
    z-index:99;
    background:rgba(253,251,247,0.88);
    backdrop-filter:blur(24px) saturate(1.4);
    -webkit-backdrop-filter:blur(24px) saturate(1.4);
  }
  .nav-links.open{opacity:1;pointer-events:auto}
  .nav-links li{flex:0 1 auto;min-width:0}
  .nav-links a{
    font-size:clamp(12px,3.4vw,15px);
    line-height:1.2;
    color:var(--stone);
    display:block;
    text-align:center;
    white-space:nowrap;
    padding:10px clamp(8px,2.4vw,14px);
    border:1px solid rgba(45,106,79,0.12);
    border-radius:10px;
    background:rgba(255,255,255,0.55);
    box-shadow:0 2px 8px rgba(0,0,0,0.04);
    transition:color 0.2s,border-color 0.2s,background 0.2s,box-shadow 0.2s;
  }
  .nav-links a:hover,.nav-links a.active{
    color:var(--pine);
    border-color:rgba(45,106,79,0.35);
    background:rgba(232,240,235,0.75);
    box-shadow:0 4px 12px rgba(45,106,79,0.1);
  }
  .nav:has(.nav-links.open) .logo,
  .nav:has(.nav-links.open) .nav-actions{
    opacity:0;
    pointer-events:none;
    transition:opacity 0.25s;
  }
}

@media(max-width:520px){
  .footer{padding:28px 4vw}
  .footer-inner{flex-direction:column;align-items:flex-start;gap:12px}
  .footer-copy{position:static;transform:none;white-space:normal}
  .footer-links{flex-wrap:wrap;gap:14px}
}

@media(max-width:480px){
  .row{grid-template-columns:1fr}
}

/* ── 消息通知铃铛 ── */
.notification-bell{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:var(--radius);
  color:var(--ink);
  transition:background 0.2s,color 0.2s;
  cursor:pointer;
  flex-shrink:0;
}
.notification-bell:hover{
  background:var(--sage);
  color:var(--pine);
}
.notification-bell svg{
  width:20px;
  height:20px;
}
.notification-dot{
  position:absolute;
  top:6px;
  left:6px;
  width:8px;
  height:8px;
  background:#EF4444;
  border-radius:50%;
  opacity:0;
  transform:scale(0);
  transition:opacity 0.2s,transform 0.2s;
}
.notification-dot.show{
  opacity:1;
  transform:scale(1);
  animation:dotPulse 2s ease-in-out infinite;
}
@keyframes dotPulse{
  0%,100%{box-shadow:0 0 0 0 rgba(239,68,68,0.4)}
  50%{box-shadow:0 0 0 4px rgba(239,68,68,0)}
}
@media(max-width:768px){
  .notification-bell{
    width:32px;
    height:32px;
  }
  .notification-bell svg{
    width:18px;
    height:18px;
  }
  .notification-dot{
    top:4px;
    left:4px;
    width:7px;
    height:7px;
  }
}

/* ── 管理员上线全局通报横幅 ── */
.admin-online-banner{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:500;
  height:40px;
  display:flex;
  align-items:stretch;
  overflow:hidden;
  background:linear-gradient(90deg, rgba(245,158,11,0.88) 0%, rgba(250,204,21,0.78) 45%, rgba(253,224,71,0.72) 100%);
  backdrop-filter:blur(5px) saturate(1.3);
  -webkit-backdrop-filter:blur(5px) saturate(1.3);
  border-bottom:1px solid rgba(146,104,0,0.45);
  box-shadow:0 3px 14px rgba(120,80,0,0.22);
  opacity:0;
  transform:translateY(-100%);
  transition:opacity 0.45s ease,transform 0.45s cubic-bezier(0.22,0.9,0.3,1);
  pointer-events:none;
}
.admin-online-banner.show{
  opacity:1;
  transform:translateY(0);
}
.admin-banner-badge{
  flex-shrink:0;
  display:flex;
  align-items:center;
  gap:8px;
  padding:0 16px 0 14px;
  background:rgba(69,44,0,0.92);
  color:#FDE68A;
  font-size:12px;
  font-weight:800;
  letter-spacing:0.14em;
  white-space:nowrap;
  clip-path:polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  padding-right:26px;
  z-index:2;
}
.admin-banner-beacon{
  position:relative;
  width:9px;
  height:9px;
  flex-shrink:0;
  border-radius:50%;
  background:#FBBF24;
  box-shadow:0 0 6px 1px rgba(251,191,36,0.9);
}
.admin-banner-beacon::after{
  content:'';
  position:absolute;
  inset:-4px;
  border-radius:50%;
  border:2px solid rgba(251,191,36,0.8);
  animation:adminBeaconPing 1.4s cubic-bezier(0,0,0.2,1) infinite;
}
@keyframes adminBeaconPing{
  0%{transform:scale(0.5);opacity:1}
  80%,100%{transform:scale(1.9);opacity:0}
}
.admin-banner-marquee{
  flex:1;
  min-width:0;
  overflow:hidden;
  display:flex;
  align-items:center;
  mask-image:linear-gradient(90deg, transparent 0, #000 28px, #000 calc(100% - 28px), transparent 100%);
  -webkit-mask-image:linear-gradient(90deg, transparent 0, #000 28px, #000 calc(100% - 28px), transparent 100%);
}
.admin-online-banner-track{
  display:flex;
  align-items:center;
  height:100%;
  width:max-content;
  white-space:nowrap;
  animation:adminBannerScroll 16s linear infinite;
}
.admin-online-banner-text{
  display:inline-block;
  padding:0 56px;
  font-size:14px;
  font-weight:700;
  color:#4A3200;
  letter-spacing:0.03em;
  text-shadow:0 1px 0 rgba(255,255,255,0.35);
}
@keyframes adminBannerScroll{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}
.admin-banner-shine{
  position:absolute;
  top:0;
  bottom:0;
  left:-120px;
  width:90px;
  background:linear-gradient(105deg, transparent 0%, rgba(255,255,255,0.55) 50%, transparent 100%);
  transform:skewX(-18deg);
  animation:adminBannerShine 3.2s ease-in-out infinite;
  pointer-events:none;
}
@keyframes adminBannerShine{
  0%{left:-120px}
  60%,100%{left:calc(100% + 120px)}
}
@media(max-width:768px){
  .admin-online-banner{
    height:36px;
  }
  .admin-banner-badge{
    font-size:11px;
    letter-spacing:0.1em;
    padding:0 20px 0 10px;
    gap:6px;
  }
  .admin-online-banner-text{
    font-size:13px;
    padding:0 36px;
  }
}

/* ── 赞助按钮 ── */
.sponsor-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 14px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  color:#C2410C;
  background:linear-gradient(135deg, #FFF7ED 0%, #FFEDD5 100%);
  border:1px solid rgba(234,88,12,0.25);
  cursor:pointer;
  transition:all 0.2s ease;
  white-space:nowrap;
  font-family:inherit;
}
.sponsor-btn:hover{
  background:linear-gradient(135deg, #FFEDD5 0%, #FED7AA 100%);
  border-color:rgba(234,88,12,0.45);
  color:#9A3412;
  transform:translateY(-1px);
  box-shadow:0 3px 10px rgba(234,88,12,0.16);
}
.sponsor-btn:active{
  transform:translateY(0);
}
.sponsor-btn-floating{
  position:fixed;
  top:20px;
  right:20px;
  z-index:90;
  box-shadow:0 4px 14px rgba(0,0,0,0.08);
}
.nav-actions .sponsor-btn{
  min-width:auto;
}

/* ── 赞助模态框 ── */
.sponsor-modal{
  position:fixed;
  inset:0;
  z-index:1000;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:20px;
  visibility:hidden;
  /* 关闭时：等淡出动画结束后再隐藏容器 */
  transition:visibility 0s 0.3s;
}
.sponsor-modal.open{
  visibility:visible;
  /* 打开时：立即可见，不等待过渡 */
  transition:none;
}
.sponsor-modal-backdrop{
  position:absolute;
  inset:0;
  background:rgba(28,28,28,0.55);
  backdrop-filter:blur(4px);
  -webkit-backdrop-filter:blur(4px);
  opacity:0;
  /* 关闭时：淡出 */
  transition:opacity 0.25s ease;
}
.sponsor-modal.open .sponsor-modal-backdrop{
  opacity:1;
  /* 打开时：毛玻璃立即生效（跳过过渡），消除点击后的延迟感 */
  transition:none;
}
.sponsor-modal-card{
  position:relative;
  width:100%;
  max-width:380px;
  background:var(--cream);
  border-radius:18px;
  border:1px solid rgba(234,88,12,0.12);
  box-shadow:0 24px 60px rgba(28,28,28,0.22);
  padding:28px 24px 24px;
  text-align:center;
  opacity:0;
  transform:translateY(16px) scale(0.96);
  /* 关闭时：淡出并下沉 */
  transition:opacity 0.22s ease, transform 0.28s cubic-bezier(0.32,0.72,0,1);
  overflow:hidden;
}
.sponsor-modal.open .sponsor-modal-card{
  opacity:1;
  transform:translateY(0) scale(1);
  /* 打开时：毛玻璃先就位，卡片带极短延迟弹出，形成"先模糊后弹窗"的节奏 */
  transition:opacity 0.2s ease 0.05s, transform 0.3s cubic-bezier(0.32,0.72,0,1) 0.05s;
}
.sponsor-modal-card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  /* RGB 流动灯效：双循环彩虹渐变 + 背景位移动画实现无缝流动 */
  background:linear-gradient(90deg,
    #FF0000, #FF7F00, #FFFF00, #00FF00, #00FFFF, #0000FF, #8B00FF,
    #FF0000, #FF7F00, #FFFF00, #00FF00, #00FFFF, #0000FF, #8B00FF, #FF0000);
  background-size:200% 100%;
  animation:sponsorRgbFlow 3s linear infinite;
  box-shadow:0 0 10px rgba(255,100,255,0.45);
}
@keyframes sponsorRgbFlow{
  0%{ background-position:0% 0; }
  100%{ background-position:100% 0; }
}
@media (prefers-reduced-motion: reduce){
  .sponsor-modal-card::before{
    animation:none;
  }
}
.sponsor-modal-close{
  position:absolute;
  top:12px;
  right:12px;
  width:32px;
  height:32px;
  border:none;
  background:transparent;
  border-radius:8px;
  color:var(--stone);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:background 0.2s, color 0.2s;
  z-index:2;
}
.sponsor-modal-close:hover{
  background:var(--light);
  color:var(--ink);
}
.sponsor-modal-title{
  font-size:20px;
  font-weight:800;
  color:#9A3412;
  margin-bottom:6px;
}
.sponsor-modal-desc{
  font-size:13px;
  color:var(--stone);
  margin-bottom:18px;
  line-height:1.6;
}
.sponsor-qrcode-box{
  display:inline-block;
  padding:10px;
  background:#fff;
  border-radius:14px;
  border:1px solid var(--border);
  box-shadow:0 6px 18px rgba(0,0,0,0.06);
  margin-bottom:16px;
}
.sponsor-qrcode-box img{
  width:200px;
  height:200px;
  object-fit:contain;
  border-radius:6px;
}
.sponsor-qrcode-placeholder{
  width:200px;
  height:200px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:10px;
  color:var(--stone);
  font-size:13px;
  background:repeating-linear-gradient(45deg, #F8F7F5, #F8F7F5 10px, #F1EFEA 10px, #F1EFEA 20px);
  border-radius:6px;
}
/* 确保 hidden 属性能正确隐藏占位符与二维码图片（全局 img{display:block}、占位符 display:flex 会覆盖 hidden 默认的 display:none） */
.sponsor-qrcode-placeholder[hidden],
.sponsor-qrcode-box img[hidden]{
  display:none;
}
.sponsor-pay-badges{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  margin-top:4px;
}
.sponsor-pay-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  border:1px solid var(--border);
  background:transparent;
  color:var(--stone);
  cursor:pointer;
  font-family:inherit;
  transition:all 0.2s ease;
}
.sponsor-pay-badge:hover{
  border-color:#A8A29E;
  color:var(--ink);
}
.sponsor-pay-badge svg{
  width:16px;
  height:16px;
  opacity:0.65;
  transition:opacity 0.2s ease;
}
.sponsor-pay-badge.active svg{
  opacity:1;
}
.sponsor-pay-badge.wx.active{
  color:#15803D;
  background:#F0FDF4;
  border-color:rgba(34,197,94,0.35);
  box-shadow:0 2px 8px rgba(34,197,94,0.16);
}
.sponsor-pay-badge.zfb.active{
  color:#1D4ED8;
  background:#EFF6FF;
  border-color:rgba(59,130,246,0.35);
  box-shadow:0 2px 8px rgba(59,130,246,0.16);
}
.sponsor-qrcode-box img{
  transition:opacity 0.25s ease, transform 0.2s ease;
  cursor:zoom-in;
}
.sponsor-qrcode-box img:hover{
  transform:scale(1.03);
}
.sponsor-qrcode-box img.fading{
  opacity:0;
}
/* ── 二维码放大预览（Lightbox） ── */
.sponsor-qrcode-lightbox{
  position:fixed;
  inset:0;
  z-index:1100;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  padding:24px;
  background:rgba(15,15,15,0.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  cursor:zoom-out;
  opacity:0;
  visibility:hidden;
  transition:opacity 0.25s ease, visibility 0.25s ease;
}
.sponsor-qrcode-lightbox.open{
  opacity:1;
  visibility:visible;
}
.sponsor-qrcode-lightbox img{
  width:min(82vw, 480px);
  height:auto;
  max-height:min(78vh, 480px);
  object-fit:contain;
  background:#fff;
  padding:14px;
  border-radius:16px;
  box-shadow:0 30px 80px rgba(0,0,0,0.45);
  transform:scale(0.85);
  transition:transform 0.25s cubic-bezier(0.32,0.72,0,1);
}
.sponsor-qrcode-lightbox.open img{
  transform:scale(1);
}
.sponsor-qrcode-lightbox-hint{
  margin:0;
  font-size:12px;
  color:rgba(255,255,255,0.7);
  pointer-events:none;
}
.sponsor-modal-tip{
  margin-top:14px;
  font-size:12px;
  color:#A8A29E;
}
@media(max-width:768px){
  .nav-actions .sponsor-btn{
    padding:6px 10px;
    font-size:12px;
  }
  .sponsor-btn-floating{
    top:14px;
    right:14px;
  }
  .sponsor-modal-card{
    padding:24px 18px 20px;
  }
  .sponsor-qrcode-box img,
  .sponsor-qrcode-placeholder{
    width:170px;
    height:170px;
  }
}