/* ============================================================
   shengyan ddr 图寻 · 设计系统
   深蓝灰配色 / 玻璃拟态 / 平滑过渡
   ============================================================ */

:root{
  /* —— 背景层 —— */
  --bg-base:#070b14;
  --bg-deep:#0a1020;
  --bg-soft:#0d1526;
  --bg-panel:#131c30;
  --bg-panel-2:#1a2440;
  --bg-elev:#1f2c4a;

  /* —— 边框 —— */
  --line-1:rgba(110,140,190,.10);
  --line-2:rgba(110,140,190,.18);
  --line-3:rgba(110,140,190,.30);

  /* —— 文字 —— */
  --tx-1:#e8eef8;
  --tx-2:#a4b6ce;
  --tx-3:#6d8099;
  --tx-4:#4a5a72;

  /* —— 强调色 —— */
  --blue:#3b82f6;
  --blue-soft:#60a5fa;
  --cyan:#22d3ee;
  --green:#10b981;
  --gold:#fbbf24;
  --orange:#f97316;
  --red:#ef4444;

  /* —— 渐变 —— */
  --grad-accent:linear-gradient(135deg,#3b82f6 0%,#22d3ee 100%);
  --grad-gold:linear-gradient(135deg,#fbbf24 0%,#f97316 100%);
  --grad-panel:linear-gradient(160deg,rgba(30,42,70,.55) 0%,rgba(19,28,48,.55) 100%);

  /* —— 阴影 —— */
  --sh-sm:0 2px 8px rgba(0,0,0,.24);
  --sh-md:0 6px 24px rgba(0,0,0,.32);
  --sh-lg:0 16px 56px rgba(0,0,0,.48);
  --glow-blue:0 0 32px rgba(59,130,246,.22);
  --glow-cyan:0 0 32px rgba(34,211,238,.20);

  /* —— 圆角 —— */
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:22px; --r-pill:999px;

  /* —— 动效 —— */
  --ease:cubic-bezier(.4,0,.2,1);
  --fast:.16s var(--ease);
  --med:.26s var(--ease);
}

*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;}
html{scroll-behavior:smooth;}

body{
  min-height:100vh;
  color:var(--tx-1);
  font-family:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:14px;
  line-height:1.6;
  background:
    radial-gradient(1200px 700px at 15% -10%,rgba(59,130,246,.10),transparent 60%),
    radial-gradient(1000px 600px at 90% 10%,rgba(34,211,238,.07),transparent 55%),
    radial-gradient(900px 700px at 50% 110%,rgba(99,102,241,.06),transparent 60%),
    var(--bg-base);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

img{max-width:100%;display:block;}
a{color:var(--blue-soft);text-decoration:none;transition:color var(--fast);}
a:hover{color:var(--cyan);}
button{font-family:inherit;cursor:pointer;}
code{
  background:rgba(15,23,42,.75);
  padding:2px 7px;border-radius:6px;
  font-family:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  font-size:.88em;color:var(--cyan);
  border:1px solid var(--line-1);
}

/* 工具类 */
.muted{color:var(--tx-3);}
.small{font-size:12px;}
.hidden{display:none !important;}
.req{color:var(--red);}
.center-msg{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:70vh;text-align:center;gap:14px;}

/* ============================================================
   顶栏
   ============================================================ */
.topbar{
  position:sticky;top:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 26px;height:60px;
  background:rgba(10,16,32,.72);
  backdrop-filter:saturate(160%) blur(18px);
  -webkit-backdrop-filter:saturate(160%) blur(18px);
  border-bottom:1px solid var(--line-1);
}
.brand{
  font-size:15px;font-weight:700;letter-spacing:.5px;
  color:var(--tx-2);display:flex;align-items:center;gap:10px;
}
.brand::before{
  content:"";width:8px;height:8px;border-radius:50%;
  background:var(--grad-accent);
  box-shadow:0 0 12px rgba(59,130,246,.8);
}
.brand a{color:inherit;}
.brand a:hover{color:var(--tx-1);}

.account-area{display:flex;align-items:center;gap:12px;}
.account-chip{
  display:flex;align-items:center;gap:9px;
  padding:5px 14px 5px 5px;
  background:var(--bg-panel);
  border:1px solid var(--line-2);
  border-radius:var(--r-pill);
  color:var(--tx-1);font-size:13px;font-weight:500;
  transition:all var(--fast);
}
.account-chip:hover{
  border-color:var(--blue);
  background:var(--bg-panel-2);
  box-shadow:var(--glow-blue);
  color:var(--tx-1);
}
.link-btn{
  background:transparent;border:none;color:var(--tx-3);
  font-size:12.5px;padding:6px 10px;border-radius:var(--r-sm);
  transition:all var(--fast);
}
.link-btn:hover{color:var(--tx-1);background:rgba(110,140,190,.08);}

.avatar{border-radius:50%;object-fit:cover;display:block;background:#0b1220;border:1px solid var(--line-2);}
.avatar-fallback{
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#2b3f63,#1a2440);
  color:#bcd2f5;font-weight:700;border-radius:50%;border:1px solid var(--line-2);
}

.room-code-badge{
  font-weight:800;letter-spacing:3px;font-size:15px;
  color:var(--cyan);
  padding:4px 14px;border-radius:var(--r-pill);
  background:rgba(34,211,238,.08);
  border:1px solid rgba(34,211,238,.24);
  margin-right:10px;
}

/* ============================================================
   按钮
   ============================================================ */
.btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 22px;border-radius:var(--r-md);border:none;
  font-size:13.5px;font-weight:600;letter-spacing:.2px;
  color:#fff;background:var(--grad-accent);
  box-shadow:0 4px 14px rgba(59,130,246,.28);
  transition:all var(--fast);
}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 22px rgba(59,130,246,.42);filter:brightness(1.06);}
.btn:active{transform:translateY(0);}
.btn:disabled{opacity:.42;cursor:not-allowed;filter:none;transform:none;box-shadow:none;}
.btn.ghost{
  background:transparent;
  border:1px solid var(--line-2);
  color:var(--tx-2);box-shadow:none;
}
.btn.ghost:hover{
  border-color:var(--blue);color:var(--tx-1);
  background:rgba(59,130,246,.08);box-shadow:none;
}
.btn.gold{background:var(--grad-gold);box-shadow:0 4px 14px rgba(251,191,36,.28);}
.btn.gold:hover{box-shadow:0 6px 22px rgba(251,191,36,.42);}
.btn.danger{background:linear-gradient(135deg,#ef4444,#b91c1c);box-shadow:0 4px 14px rgba(239,68,68,.28);}
.btn.lg{padding:13px 30px;font-size:14.5px;border-radius:var(--r-lg);}

/* ============================================================
   首页
   ============================================================ */
.home{max-width:1220px;margin:0 auto;padding:40px 28px 100px;}

.main-title{
  text-align:center;
  font-size:48px;font-weight:800;
  letter-spacing:6px;
  margin:20px 0 12px;
  background:linear-gradient(120deg,#7fb2ff 0%,#22d3ee 50%,#a78bfa 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 4px 32px rgba(59,130,246,.25));
}
.main-sub{
  text-align:center;color:var(--tx-3);font-size:13.5px;
  letter-spacing:2px;margin-bottom:52px;
}

/* 三大入口 */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;margin-bottom:36px;
}
.entry-card{
  position:relative;overflow:hidden;
  display:flex;flex-direction:column;gap:14px;
  min-height:180px;padding:28px 26px;
  background:var(--grad-panel);
  border:1px solid var(--line-2);
  border-radius:var(--r-xl);
  color:var(--tx-1);
  cursor:pointer;
  transition:all var(--med);
  text-align:left;
}
.entry-card::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(400px 200px at 50% -20%,rgba(59,130,246,.18),transparent 70%);
  opacity:0;transition:opacity var(--med);
}
.entry-card:hover{
  transform:translateY(-4px);
  border-color:var(--blue);
  box-shadow:var(--sh-md),var(--glow-blue);
}
.entry-card:hover::before{opacity:1;}
.entry-card .ec-icon{
  width:52px;height:52px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(59,130,246,.12);
  border:1px solid rgba(59,130,246,.24);
  color:var(--cyan);
  transition:all var(--med);
}
.entry-card .ec-icon svg{width:24px;height:24px;}
.entry-card:hover .ec-icon{
  background:rgba(59,130,246,.20);
  transform:scale(1.06);
  box-shadow:0 0 24px rgba(59,130,246,.4);
}
.entry-card .ec-title{font-size:17px;font-weight:700;letter-spacing:.5px;}
.entry-card .ec-desc{font-size:12.5px;color:var(--tx-3);line-height:1.7;}

/* Bingo 预留区 */
.bingo-zone{
  position:relative;overflow:hidden;
  min-height:220px;margin:36px 0;
  border:1.5px dashed var(--line-3);
  border-radius:var(--r-xl);
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(26,36,64,.35),rgba(15,23,42,.35));
}
.bingo-zone::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,transparent 0,transparent calc(50% - 1px),var(--line-1) 50%,transparent calc(50% + 1px),transparent 100%),
    linear-gradient(0deg,transparent 0,transparent calc(50% - 1px),var(--line-1) 50%,transparent calc(50% + 1px),transparent 100%);
  pointer-events:none;
}
.bingo-zone .bz-label{
  font-size:14px;letter-spacing:6px;color:var(--tx-4);
  font-weight:600;text-transform:uppercase;
}

/* 底部：排行榜 + 两个大按钮 */
.bottom-section{
  display:grid;
  grid-template-columns:300px 1fr;
  gap:24px;margin-top:10px;align-items:stretch;
}
.leaderboard{
  background:var(--grad-panel);
  border:1px solid var(--line-2);
  border-radius:var(--r-xl);
  padding:20px 22px;
  display:flex;flex-direction:column;
}
.leaderboard h3{
  margin:0 0 14px;font-size:13px;letter-spacing:2px;
  color:var(--gold);font-weight:700;text-transform:uppercase;
  display:flex;align-items:center;gap:8px;
}
.leaderboard h3::before{
  content:"";width:3px;height:14px;border-radius:2px;background:var(--grad-gold);
}
.leaderboard ol{
  margin:0;padding:0;list-style:none;
  display:flex;flex-direction:column;gap:6px;
  overflow-y:auto;max-height:180px;
}
.leaderboard li{
  display:flex;justify-content:space-between;align-items:center;
  padding:6px 10px;border-radius:var(--r-sm);
  font-size:13px;
  transition:background var(--fast);
}
.leaderboard li:hover{background:rgba(110,140,190,.06);}
.leaderboard li .rank{
  display:inline-flex;width:20px;height:20px;align-items:center;justify-content:center;
  font-size:11px;font-weight:800;border-radius:6px;
  background:rgba(110,140,190,.12);color:var(--tx-3);margin-right:8px;
}
.leaderboard li:nth-child(1) .rank{background:var(--grad-gold);color:#3a2a00;}
.leaderboard li:nth-child(2) .rank{background:linear-gradient(135deg,#cbd5e1,#94a3b8);color:#1e293b;}
.leaderboard li:nth-child(3) .rank{background:linear-gradient(135deg,#d97706,#92400e);color:#fff;}
.leaderboard li .score{
  font-weight:800;font-size:13px;
  color:var(--gold);font-variant-numeric:tabular-nums;
}

.bottom-buttons{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
}
.huge-btn{
  position:relative;overflow:hidden;
  min-height:120px;padding:28px 30px;
  border-radius:var(--r-xl);border:1px solid var(--line-2);
  background:var(--grad-panel);
  color:var(--tx-1);
  display:flex;flex-direction:column;justify-content:center;gap:8px;
  text-align:left;
  transition:all var(--med);
}
.huge-btn::after{
  content:"";position:absolute;right:-40px;top:-40px;
  width:160px;height:160px;border-radius:50%;
  background:radial-gradient(circle,rgba(59,130,246,.20),transparent 70%);
  transition:transform var(--med);
}
.huge-btn:hover{
  transform:translateY(-4px);
  border-color:var(--blue);
  box-shadow:var(--sh-md),var(--glow-blue);
}
.huge-btn:hover::after{transform:scale(1.4);}
.huge-btn .hb-title{font-size:20px;font-weight:800;letter-spacing:1.5px;}
.huge-btn .hb-desc{font-size:12px;color:var(--tx-3);letter-spacing:.5px;}
#btn-challenge{background:linear-gradient(160deg,rgba(251,191,36,.10),rgba(249,115,22,.05));}
#btn-challenge:hover{border-color:var(--gold);box-shadow:var(--sh-md),0 0 32px rgba(251,191,36,.25);}
#btn-bingo{background:linear-gradient(160deg,rgba(167,139,250,.10),rgba(99,102,241,.05));}
#btn-bingo:hover{border-color:#a78bfa;box-shadow:var(--sh-md),0 0 32px rgba(167,139,250,.25);}

/* ============================================================
   通用页面
   ============================================================ */
.page{max-width:1160px;margin:0 auto;padding:36px 28px 80px;}
.page.narrow{max-width:760px;}
.page-title{
  font-size:28px;font-weight:800;letter-spacing:1px;margin:8px 0 6px;
}
.page-sub{color:var(--tx-3);font-size:13px;margin-bottom:28px;letter-spacing:.5px;}

.card{
  background:var(--grad-panel);
  border:1px solid var(--line-2);
  border-radius:var(--r-xl);
  padding:24px 26px;margin-bottom:20px;
  box-shadow:var(--sh-sm);
}
.card h3{
  margin:0 0 18px;font-size:15px;font-weight:700;letter-spacing:1px;
  display:flex;align-items:center;gap:10px;
}
.card h3::before{
  content:"";width:3px;height:14px;border-radius:2px;background:var(--grad-accent);
}

/* ============================================================
   表单
   ============================================================ */
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;}
label{
  display:flex;flex-direction:column;gap:7px;
  font-size:12.5px;color:var(--tx-2);font-weight:500;letter-spacing:.3px;
}
label.chk{
  flex-direction:row;align-items:center;gap:10px;
  color:var(--tx-1);font-size:13.5px;
  padding:10px 14px;border-radius:var(--r-md);
  background:rgba(15,23,42,.5);border:1px solid var(--line-1);
  cursor:pointer;transition:all var(--fast);
}
label.chk:hover{border-color:var(--line-3);background:rgba(26,36,64,.6);}
input[type=text],input[type=password],input[type=number],select,textarea{
  background:rgba(10,16,32,.85);
  border:1px solid var(--line-2);
  color:var(--tx-1);
  padding:11px 14px;border-radius:var(--r-md);
  font-size:13.5px;font-family:inherit;outline:none;
  transition:all var(--fast);width:100%;
}
input:focus,select:focus,textarea:focus{
  border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(59,130,246,.14),var(--glow-blue);
  background:rgba(10,16,32,.95);
}
input::placeholder{color:var(--tx-4);}
input[type=checkbox]{width:17px;height:17px;accent-color:var(--blue);cursor:pointer;}
select{cursor:pointer;appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236d8099' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:38px;
}

/* ============================================================
   模态框
   ============================================================ */
.modal-mask{
  position:fixed;inset:0;z-index:200;
  background:rgba(4,8,16,.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;
  padding:20px;
  animation:maskIn .2s var(--ease);
}
@keyframes maskIn{from{opacity:0;}to{opacity:1;}}
.modal{
  width:100%;max-width:560px;max-height:90vh;overflow:auto;
  background:linear-gradient(160deg,#1a2440 0%,#131c30 100%);
  border:1px solid var(--line-2);
  border-radius:var(--r-xl);
  padding:28px 30px;
  box-shadow:var(--sh-lg);
  animation:modalIn .28s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:translateY(12px) scale(.98);}to{opacity:1;transform:none;}}
.modal h3{
  margin:0 0 22px;font-size:18px;font-weight:800;letter-spacing:1px;
  display:flex;align-items:center;gap:12px;
}
.modal h3::before{
  content:"";width:4px;height:18px;border-radius:2px;background:var(--grad-accent);
}
.modal-actions{
  display:flex;gap:12px;justify-content:flex-end;margin-top:26px;
  padding-top:20px;border-top:1px solid var(--line-1);
}

/* ============================================================
   Toast
   ============================================================ */
#tx-toast{
  position:fixed;top:80px;left:50%;transform:translateX(-50%);
  z-index:9999;padding:12px 24px;
  background:rgba(26,36,64,.96);
  border:1px solid var(--line-3);
  border-radius:var(--r-md);
  color:var(--tx-1);font-size:13.5px;font-weight:500;
  box-shadow:var(--sh-lg);
  backdrop-filter:blur(12px);
  animation:toastIn .22s var(--ease);
  max-width:90vw;
}
#tx-toast.err{
  background:rgba(69,26,34,.96);
  border-color:rgba(239,68,68,.42);
  color:#fecaca;
}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,-10px);}to{opacity:1;transform:translate(-50%,0);}}

/* ============================================================
   房间大厅
   ============================================================ */
.room-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:18px;margin-top:6px;
}
.room-card{
  position:relative;overflow:hidden;
  background:var(--grad-panel);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
  padding:20px 22px;
  display:flex;flex-direction:column;gap:14px;
  transition:all var(--med);
}
.room-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--grad-accent);opacity:.7;
}
.room-card:hover{
  transform:translateY(-3px);
  border-color:var(--blue);
  box-shadow:var(--sh-md),var(--glow-blue);
}
.rc-head{display:flex;justify-content:space-between;align-items:center;gap:12px;}
.rc-code{
  font-size:26px;font-weight:900;letter-spacing:4px;
  font-variant-numeric:tabular-nums;
  background:var(--grad-accent);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.rc-host{font-size:12px;color:var(--tx-3);text-align:right;line-height:1.5;}
.rc-host strong{color:var(--tx-1);font-weight:600;display:block;}
.rc-tags{display:flex;flex-wrap:wrap;gap:6px;}
.tag{
  font-size:11px;font-weight:600;letter-spacing:.4px;
  padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(15,23,42,.6);
  border:1px solid var(--line-1);
  color:var(--tx-3);
}
.tag.on{border-color:rgba(16,185,129,.4);color:#6ee7b7;background:rgba(16,185,129,.08);}
.tag.gold{border-color:rgba(251,191,36,.4);color:#fcd34d;background:rgba(251,191,36,.08);}

/* ============================================================
   头像上传 / 拖拽
   ============================================================ */
.drop-box{
  position:relative;overflow:hidden;
  border:2px dashed var(--line-3);
  border-radius:var(--r-xl);
  min-height:320px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(26,36,64,.4),rgba(15,23,42,.4));
  cursor:pointer;transition:all var(--med);
}
.drop-box:hover,.drop-box.over{
  border-color:var(--blue);
  background:linear-gradient(135deg,rgba(59,130,246,.10),rgba(34,211,238,.05));
  box-shadow:inset 0 0 60px rgba(59,130,246,.10);
}
#drop-hint{text-align:center;color:var(--tx-3);line-height:2;}
.drop-icon{
  font-size:52px;margin-bottom:10px;
  filter:drop-shadow(0 4px 16px rgba(59,130,246,.3));
}
#preview{max-width:100%;max-height:520px;object-fit:contain;display:block;border-radius:var(--r-lg);}

.notice{
  display:flex;gap:12px;align-items:flex-start;
  background:linear-gradient(135deg,rgba(59,130,246,.08),rgba(34,211,238,.04));
  border:1px solid rgba(59,130,246,.22);
  border-left:3px solid var(--blue);
  border-radius:var(--r-md);
  padding:14px 18px;margin:20px 0;
  font-size:12.5px;color:#a8c4e8;line-height:1.75;
}
.notice::before{content:"ℹ";color:var(--cyan);font-size:16px;flex-shrink:0;}

/* ============================================================
   个人主页
   ============================================================ */
.profile-head{
  display:flex;align-items:center;gap:26px;
  padding:32px 34px;margin-bottom:24px;
  background:var(--grad-panel);
  border:1px solid var(--line-2);
  border-radius:var(--r-xl);
  position:relative;overflow:hidden;
}
.profile-head::before{
  content:"";position:absolute;right:-80px;top:-80px;
  width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(59,130,246,.14),transparent 70%);
  pointer-events:none;
}
.avatar-wrap{position:relative;cursor:pointer;flex-shrink:0;}
.avatar-wrap .avatar,#avatar-box .avatar{width:116px;height:116px;font-size:48px;}
#avatar-box .avatar-fallback{display:flex;align-items:center;justify-content:center;}
.avatar-edit{
  position:absolute;right:2px;bottom:2px;
  width:34px;height:34px;border-radius:50%;
  background:var(--grad-accent);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;color:#fff;
  border:3px solid var(--bg-base);
  box-shadow:0 4px 14px rgba(59,130,246,.5);
  transition:transform var(--fast);
}
.avatar-wrap:hover .avatar-edit{transform:scale(1.1);}
.profile-meta h2{margin:0 0 8px;font-size:28px;font-weight:800;letter-spacing:1px;}
.profile-meta .pid{
  display:inline-block;
  font-size:12px;font-family:"JetBrains Mono",monospace;
  color:var(--cyan);
  padding:3px 12px;border-radius:var(--r-pill);
  background:rgba(34,211,238,.08);
  border:1px solid rgba(34,211,238,.22);
}

.records{display:flex;flex-direction:column;gap:10px;}
.record-row{
  display:flex;justify-content:space-between;align-items:center;gap:14px;
  background:rgba(10,16,32,.55);
  border:1px solid var(--line-1);
  border-radius:var(--r-md);
  padding:13px 18px;
  font-size:13px;
  transition:all var(--fast);
}
.record-row:hover{border-color:var(--line-3);background:rgba(26,36,64,.55);}
.record-row .rr-main{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.record-row .rr-score{
  font-weight:900;font-size:18px;font-variant-numeric:tabular-nums;
  color:var(--gold);letter-spacing:.5px;
}
.res-win{color:#34d399;font-weight:800;padding:2px 10px;border-radius:var(--r-pill);background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.3);}
.res-lose{color:#f87171;font-weight:800;padding:2px 10px;border-radius:var(--r-pill);background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.3);}
.res-draw{color:#fbbf24;font-weight:800;padding:2px 10px;border-radius:var(--r-pill);background:rgba(251,191,36,.12);border:1px solid rgba(251,191,36,.3);}

/* ============================================================
   对战舞台
   ============================================================ */
.dark-stage{overflow:hidden;height:100vh;}
.game-wrap{display:flex;flex-direction:column;height:calc(100vh - 60px);padding:16px;gap:12px;}

.players-bar{
  display:flex;align-items:center;justify-content:center;gap:24px;
  padding:6px 0;flex-shrink:0;
}
.player-card{
  display:flex;align-items:center;gap:14px;
  padding:12px 20px;min-width:240px;
  background:var(--grad-panel);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
  transition:all var(--med);
}
.player-card.me{border-color:rgba(59,130,246,.5);box-shadow:0 0 24px rgba(59,130,246,.15);}
.player-card.ready{border-color:rgba(16,185,129,.5);box-shadow:0 0 24px rgba(16,185,129,.18);}
.player-card.ready.me{
  border-color:rgba(16,185,129,.6);
  box-shadow:0 0 28px rgba(16,185,129,.22);
}
.player-card a{display:block;border-radius:50%;transition:transform var(--fast);}
.player-card a:hover{transform:scale(1.06);}
.pc-info{display:flex;flex-direction:column;line-height:1.3;gap:2px;}
.pc-name{font-size:14px;font-weight:600;color:var(--tx-1);}
.pc-score{
  font-size:26px;font-weight:900;letter-spacing:.5px;
  font-variant-numeric:tabular-nums;
  background:var(--grad-gold);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 2px 10px rgba(251,191,36,.25));
}
.pc-ready{font-size:11px;color:var(--tx-3);letter-spacing:1px;}
.player-card.ready .pc-ready{color:#6ee7b7;}
.vs{
  font-size:20px;font-weight:900;letter-spacing:2px;
  color:var(--tx-4);
  text-shadow:0 0 20px rgba(110,140,190,.3);
}

.game-head{
  display:flex;justify-content:space-between;align-items:center;
  padding:0 24px;font-size:13px;color:var(--tx-3);flex-shrink:0;
}
.round-info{
  font-weight:700;color:var(--tx-1);letter-spacing:1px;font-size:14px;
  padding:6px 16px;border-radius:var(--r-pill);
  background:rgba(59,130,246,.08);
  border:1px solid rgba(59,130,246,.2);
}
.settings-brief{font-size:11.5px;color:var(--tx-4);letter-spacing:.3px;}

.stage{
  position:relative;flex:1;overflow:hidden;
  background:#050810;
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
  display:flex;align-items:center;justify-content:center;
  box-shadow:inset 0 0 80px rgba(0,0,0,.6);
}
.q-img{
  max-width:100%;max-height:100%;
  user-select:none;-webkit-user-drag:none;
  cursor:grab;transform-origin:center center;
  will-change:transform;border-radius:6px;
}
.q-img.grabbing{cursor:grabbing;}
.empty-tip{
  display:flex;flex-direction:column;gap:18px;align-items:center;
  color:var(--tx-3);text-align:center;font-size:14px;letter-spacing:.5px;
}

.answer-bar{
  display:flex;gap:12px;align-items:center;
  padding:14px 20px;flex-shrink:0;
  background:var(--grad-panel);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
}
.answer-bar input{flex:1;padding:13px 16px;font-size:14px;}
.answer-bar .btn{padding:13px 26px;font-size:14px;}
.timer{
  min-width:78px;text-align:center;font-weight:800;font-size:16px;
  color:var(--cyan);font-variant-numeric:tabular-nums;
  padding:6px 12px;border-radius:var(--r-md);
  background:rgba(34,211,238,.08);
  border:1px solid rgba(34,211,238,.2);
}

.feedback{
  padding:0 6px;font-size:13.5px;color:var(--tx-2);
  min-height:24px;line-height:1.7;flex-shrink:0;
}
.hint-box{
  padding:0 6px 6px;font-size:13.5px;color:var(--gold);
  line-height:1.8;flex-shrink:0;
}

/* ============================================================
   每周挑战
   ============================================================ */
.score-big{
  font-size:32px;font-weight:900;letter-spacing:1px;
  font-variant-numeric:tabular-nums;
  background:var(--grad-gold);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 4px 18px rgba(251,191,36,.3));
}

/* ============================================================
   管理后台
   ============================================================ */
.pending-list{display:flex;flex-direction:column;gap:20px;margin-top:8px;}
.pending-card{
  display:grid;grid-template-columns:320px 1fr;gap:22px;
  background:var(--grad-panel);
  border:1px solid var(--line-2);
  border-radius:var(--r-xl);
  padding:22px;
}
.pending-card img{
  width:100%;border-radius:var(--r-md);
  background:#050810;object-fit:contain;
  border:1px solid var(--line-1);
}
.pending-meta{
  margin-top:12px;font-size:12px;color:var(--tx-3);line-height:1.8;
  padding:10px 14px;border-radius:var(--r-md);
  background:rgba(10,16,32,.5);
  border:1px solid var(--line-1);
}
.pending-meta strong{color:var(--tx-1);font-weight:600;}

.section-h{
  font-size:14px;font-weight:700;letter-spacing:1.5px;
  color:var(--tx-2);margin:34px 0 8px;
  padding-bottom:10px;border-bottom:1px solid var(--line-1);
  display:flex;align-items:center;gap:10px;
}
.section-h::before{
  content:"";width:4px;height:14px;border-radius:2px;background:var(--grad-accent);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:960px){
  .entry-grid{grid-template-columns:1fr;}
  .bottom-section{grid-template-columns:1fr;}
  .bottom-buttons{grid-template-columns:1fr;}
  .main-title{font-size:30px;letter-spacing:3px;}
  .pending-card{grid-template-columns:1fr;}
  .player-card{min-width:0;flex:1;}
  .players-bar{gap:12px;}
  .pc-score{font-size:22px;}
}
@media (max-width:640px){
  .page{padding:24px 16px 60px;}
  .home{padding:24px 16px 60px;}
  .topbar{padding:0 14px;}
  .brand{font-size:13px;}
  .answer-bar{flex-wrap:wrap;}
  .answer-bar input{min-width:100%;}
  .timer{min-width:60px;font-size:14px;}
}
/* ============================================================
   需求7 · 房间输入框：主配色底 + 淡色文字
   ============================================================ */
.answer-bar input {
  background: linear-gradient(160deg, #1f2c4a 0%, #1a2440 100%);
  border: 1px solid rgba(110,140,190,.32);
  color: #dbe6f8;
  font-weight: 500;
  letter-spacing: .3px;
}
.answer-bar input::placeholder {
  color: rgba(164,182,206,.55);
}
.answer-bar input:focus {
  border-color: #3b82f6;
  background: linear-gradient(160deg, #243356 0%, #1f2c4a 100%);
  box-shadow: 0 0 0 3px rgba(59,130,246,.18), 0 0 24px rgba(59,130,246,.28);
  color: #eef4ff;
}

/* ============================================================
   需求8 · 结算动画
   ============================================================ */
.result-mask {
  position: fixed; inset: 0; z-index: 500;
  background: radial-gradient(circle at 50% 40%, rgba(15,23,42,.72), rgba(4,8,16,.94));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  animation: rmFade .35s var(--ease);
  padding: 24px;
}
@keyframes rmFade { from{opacity:0;} to{opacity:1;} }

.result-panel {
  width: 100%; max-width: 720px;
  display: flex; flex-direction: column; align-items: center; gap: 26px;
  animation: rmIn .55s cubic-bezier(.34,1.56,.64,1);
}
@keyframes rmIn {
  from{opacity:0;transform:translateY(30px) scale(.9);}
  to{opacity:1;transform:none;}
}

.result-title {
  font-size: 26px; font-weight: 900; letter-spacing: 4px;
  background: linear-gradient(90deg,#7fb2ff,#22d3ee,#a78bfa);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 0 40px rgba(59,130,246,.35);
  animation: titlePop .55s cubic-bezier(.34,1.56,.64,1) .15s both;
}
@keyframes titlePop {
  from{opacity:0;transform:scale(.7);}
  to{opacity:1;transform:none;}
}

.result-players {
  display: flex; align-items: center; gap: 40px; justify-content: center;
  flex-wrap: wrap;
}

.result-card {
  position: relative;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 28px 32px; min-width: 220px;
  background: linear-gradient(160deg, rgba(30,42,70,.85), rgba(19,28,48,.85));
  border: 1px solid rgba(110,140,190,.28);
  border-radius: 22px;
  box-shadow: 0 16px 56px rgba(0,0,0,.55);
  animation: cardIn .55s cubic-bezier(.34,1.56,.64,1) both;
}
@keyframes cardIn {
  from{opacity:0;transform:translateY(20px) scale(.85);}
  to{opacity:1;transform:none;}
}
.result-card.win {
  border-color: rgba(251,191,36,.65);
  box-shadow: 0 16px 56px rgba(0,0,0,.55), 0 0 60px rgba(251,191,36,.28);
}
.result-card.lose { border-color: rgba(239,68,68,.45); }
.result-card.draw { border-color: rgba(34,211,238,.55); }

.result-card .rc-avatar {
  width: 96px; height: 96px; border-radius: 50%;
  border: 3px solid rgba(110,140,190,.4);
  box-shadow: 0 8px 32px rgba(0,0,0,.5);
  animation: avatarIn .6s cubic-bezier(.34,1.56,.64,1) .1s both;
}
@keyframes avatarIn {
  from{opacity:0;transform:scale(.4) rotate(-10deg);}
  to{opacity:1;transform:none;}
}
.result-card.win .rc-avatar {
  border-color: var(--gold);
  box-shadow: 0 8px 40px rgba(251,191,36,.55);
}

.result-card .rc-name {
  font-size: 16px; font-weight: 700; letter-spacing: 1px;
  color: #e8eef8;
}
.result-card .rc-score {
  font-size: 42px; font-weight: 900; letter-spacing: 1px;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg,#fbbf24 0%,#f97316 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 4px 20px rgba(251,191,36,.4));
  animation: scoreIn .7s cubic-bezier(.34,1.56,.64,1) .25s both;
}
@keyframes scoreIn {
  from{opacity:0;transform:scale(.5);}
  to{opacity:1;transform:none;}
}
.result-card.lose .rc-score {
  background: linear-gradient(135deg,#f87171,#dc2626);
  -webkit-background-clip: text; background-clip: text;
  filter: drop-shadow(0 4px 20px rgba(239,68,68,.35));
}
.result-card.draw .rc-score {
  background: linear-gradient(135deg,#67e8f9,#22d3ee);
  -webkit-background-clip: text; background-clip: text;
  filter: drop-shadow(0 4px 20px rgba(34,211,238,.35));
}

.result-card .rc-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  padding: 4px 16px; border-radius: 999px;
  font-size: 11px; font-weight: 800; letter-spacing: 3px;
  animation: badgeIn .5s cubic-bezier(.34,1.56,.64,1) .5s both;
}
@keyframes badgeIn {
  from{opacity:0;transform:translate(-50%,-8px) scale(.6);}
  to{opacity:1;transform:translate(-50%,0) scale(1);}
}
.result-card.win .rc-badge { background: linear-gradient(135deg,#fbbf24,#f97316); color:#3a2a00; }
.result-card.lose .rc-badge { background: linear-gradient(135deg,#7f1d1d,#b91c1c); color:#fee2e2; }
.result-card.draw .rc-badge { background: linear-gradient(135deg,#0e7490,#22d3ee); color:#062a30; }

.result-vs {
  font-size: 22px; font-weight: 900; letter-spacing: 3px; color: rgba(110,140,190,.6);
  animation: titlePop .5s cubic-bezier(.34,1.56,.64,1) .2s both;
}

.result-actions {
  display: flex; gap: 14px; justify-content: center;
  animation: titlePop .5s cubic-bezier(.34,1.56,.64,1) .7s both;
}

/* ============================================================
   需求9 · 成绩详情展开
   ============================================================ */
.record-block { display:flex; flex-direction:column; gap:8px; }

.record-detail {
  padding:16px 18px;
  background:rgba(10,16,32,.55);
  border:1px solid var(--line-1);
  border-radius:var(--r-md);
  animation: detailIn .28s var(--ease);
  font-size:12.5px;
}
@keyframes detailIn {
  from{opacity:0;transform:translateY(-6px);}
  to{opacity:1;transform:none;}
}

.detail-section + .detail-section { margin-top:14px; }
.detail-title {
  font-size:11px;font-weight:800;letter-spacing:2px;color:var(--cyan);
  text-transform:uppercase;margin-bottom:10px;
  display:flex;align-items:center;gap:8px;
}
.detail-title::before {
  content:"";width:3px;height:12px;border-radius:2px;background:var(--grad-accent);
}

.detail-grid {
  display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:6px 18px;font-size:12.5px;
}
.detail-grid span { color:var(--tx-3); }
.detail-grid b { color:var(--tx-1);font-weight:600; }

.detail-round {
  padding:10px 12px;margin-bottom:8px;
  background:rgba(26,36,64,.45);
  border:1px solid var(--line-1);
  border-radius:8px;
}
.dr-head {
  display:flex;gap:14px;flex-wrap:wrap;align-items:center;
  margin-bottom:8px;font-size:12.5px;
}
.dr-num { font-weight:700;color:var(--tx-1); }
.dr-answer { font-size:12.5px;color:var(--tx-3);margin-bottom:8px; }
.dr-answer b { color:var(--cyan);font-weight:600; }

.dr-players { display:flex;flex-direction:column;gap:4px; }
.dr-player {
  display:flex;gap:12px;flex-wrap:wrap;align-items:center;
  padding:4px 8px;border-radius:6px;
  background:rgba(10,16,32,.5);
  font-size:12px;
}
.dr-player .dr-uid { font-weight:700;color:var(--tx-2);min-width:32px; }
.dr-player .dr-gain { margin-left:auto;font-weight:800;font-variant-numeric:tabular-nums; }

/* ============================================================
   需求 10 · 上传记录
   ============================================================ */
.uploads-list { display:flex; flex-direction:column; gap:12px; }

/* 统计条 */
.upload-stats {
  display:flex; flex-wrap:wrap; gap:22px;
  padding:14px 18px;
  background:rgba(10,16,32,.5);
  border:1px solid var(--line-1);
  border-radius:var(--r-md);
  font-size:13px; color:var(--tx-3);
}
.upload-stats .us-item { display:flex; align-items:baseline; gap:6px; }
.upload-stats .us-item b {
  font-size:17px; font-weight:900;
  font-variant-numeric:tabular-nums;
  color:var(--tx-1);
}
.upload-stats .pending  b { color:#fcd34d; }
.upload-stats .approved b { color:#34d399; }
.upload-stats .rejected b { color:#f87171; }

/* 单个上传条目 */
.upload-item {
  display:grid;
  grid-template-columns:120px 1fr auto;
  gap:18px; align-items:center;
  padding:14px 18px;
  background:rgba(10,16,32,.5);
  border:1px solid var(--line-1);
  border-radius:var(--r-md);
  transition:all var(--fast);
}
.upload-item:hover {
  border-color:var(--line-3);
  background:rgba(26,36,64,.55);
}

.upload-thumb {
  width:120px; height:68px;
  border-radius:8px;
  object-fit:cover;
  background:#050810;
  border:1px solid var(--line-1);
}
.upload-thumb.placeholder {
  display:flex; align-items:center; justify-content:center;
  color:var(--tx-4); font-size:26px; font-weight:300;
}

.upload-info {
  display:flex; flex-direction:column; gap:5px;
  min-width:0;
}
.upload-name {
  font-size:14.5px; font-weight:700; color:var(--tx-1);
  overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
}
.upload-meta {
  display:flex; flex-wrap:wrap; gap:16px;
  font-size:12.5px; color:var(--tx-3);
}
.upload-meta .upload-number {
  color:var(--cyan);
  font-family:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  font-size:12px;
}
.upload-reason {
  margin-top:4px; padding:5px 10px;
  font-size:12px; color:#fca5a5;
  background:rgba(239,68,68,.08);
  border-left:2px solid #ef4444;
  border-radius:4px;
}

/* 状态徽章 */
.upload-status {
  padding:5px 14px;
  border-radius:var(--r-pill);
  font-size:11.5px; font-weight:800; letter-spacing:1.2px;
  white-space:nowrap;
}
.upload-status.status-pending {
  color:#fcd34d;
  background:rgba(251,191,36,.10);
  border:1px solid rgba(251,191,36,.32);
}
.upload-status.status-approved {
  color:#6ee7b7;
  background:rgba(16,185,129,.10);
  border:1px solid rgba(16,185,129,.32);
}
.upload-status.status-rejected {
  color:#fca5a5;
  background:rgba(239,68,68,.10);
  border:1px solid rgba(239,68,68,.32);
}

@media (max-width:640px){
  .upload-item { grid-template-columns:1fr; }
  .upload-thumb { width:100%; height:auto; aspect-ratio:16/9; }
  .upload-status { justify-self:flex-start; }
}

/* ============================================================
   需求 14 · 模块级展开/收起
   ============================================================ */
.block-toggle {
  display: flex; justify-content: center;
  margin-top: 14px; padding-top: 14px;
  border-top: 1px dashed var(--line-1);
}
.block-toggle-btn {
  min-width: 200px;
  font-size: 13px;
}

/* ============================================================
   需求 11 + 12 · 记录逐条展开箭头
   ============================================================ */
.record-block .chevron {
  color: var(--tx-3);
  font-size: 14px;
  transition: transform .25s var(--ease);
  display: inline-block;
  line-height: 1;
}
.record-block .record-detail { animation: detailIn .28s var(--ease); }
@keyframes detailIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: none; }
}

/* ============================================================
   需求 15 · 批阅界面标签页
   ============================================================ */
.tabs {
  display: flex; gap: 6px;
  margin: 30px 0 18px;
  padding: 6px;
  background: rgba(10,16,32,.55);
  border: 1px solid var(--line-1);
  border-radius: var(--r-pill);
  width: fit-content;
}
.tabs .tab {
  padding: 9px 22px;
  background: transparent;
  border: none;
  color: var(--tx-3);
  font-size: 13.5px; font-weight: 600; letter-spacing: .4px;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: all var(--fast);
}
.tabs .tab:hover { color: var(--tx-1); }
.tabs .tab.active {
  color: #fff;
  background: var(--grad-accent);
  box-shadow: 0 4px 14px rgba(59,130,246,.32);
}
.tab-panel { animation: panelIn .28s var(--ease); }
@keyframes panelIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

/* 题库查询：工具栏 */
.tiku-toolbar {
  display: flex; gap: 12px; margin-bottom: 18px;
}
.tiku-toolbar input[type="text"] { flex: 1; }
.tiku-toolbar select { width: 140px; flex-shrink: 0; }

/* 题库列表 */
.tiku-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 14px;
}
@media (max-width: 900px) {
  .tiku-list { grid-template-columns: 1fr; }
}

.tiku-item {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  grid-template-areas:
    "thumb info chevron"
    "edit  edit edit";
  gap: 16px; align-items: center;
  padding: 14px 18px;
  background: rgba(10,16,32,.5);
  border: 1px solid var(--line-1);
  border-radius: var(--r-md);
  transition: all var(--fast);
}
.tiku-item:hover {
  border-color: var(--line-3);
  background: rgba(26,36,64,.55);
}

.tiku-thumb {
  grid-area: thumb;
  width: 140px; height: 79px;
  object-fit: cover;
  border-radius: 8px;
  background: #050810;
  border: 1px solid var(--line-1);
}
.tiku-info {
  grid-area: info;
  display: flex; flex-direction: column; gap: 6px;
  cursor: pointer; min-width: 0;
}
.tiku-head {
  display: flex; align-items: center; gap: 10px;
  flex-wrap: wrap;
}
.tiku-num {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px; font-weight: 800;
  color: var(--cyan);
  padding: 2px 8px; border-radius: 5px;
  background: rgba(34,211,238,.08);
  border: 1px solid rgba(34,211,238,.24);
}
.tiku-name {
  font-size: 14.5px; font-weight: 700;
  color: var(--tx-1);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.tiku-meta {
  display: flex; flex-wrap: wrap; gap: 14px;
  font-size: 12px; color: var(--tx-3);
}
.tiku-item .chevron {
  grid-area: chevron;
  color: var(--tx-3); font-size: 14px;
  transition: transform .25s var(--ease);
  align-self: start; margin-top: 4px;
}

.tiku-edit {
  grid-area: edit;
  padding-top: 14px;
  margin-top: 6px;
  border-top: 1px dashed var(--line-1);
  animation: detailIn .28s var(--ease);
}
.tiku-edit-inner .form-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* ============================================================
   需求 19 · 对战详情中的对手行
   ============================================================ */
.opponent-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.opponent-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 6px;
  border-radius: var(--r-pill);
  background: rgba(10,16,32,.55);
  border: 1px solid var(--line-1);
  color: var(--tx-1);
  transition: all var(--fast);
}
.opponent-link:hover {
  border-color: var(--blue);
  background: rgba(59,130,246,.10);
  color: var(--tx-1);
  box-shadow: 0 0 20px rgba(59,130,246,.20);
}
.opponent-link .opponent-name {
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .2px;
}
.opponent-link .opponent-id {
  font-family: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 11px;
  color: var(--cyan);
  padding: 2px 8px;
  border-radius: var(--r-pill);
  background: rgba(34,211,238,.08);
  border: 1px solid rgba(34,211,238,.22);
}

/* ============================================================
   需求 24 · 提示栏
   ============================================================ */
.hint-box {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0 6px 8px;
  min-height: 0;
}

.hint-line {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: linear-gradient(135deg, rgba(251,191,36,.08), rgba(249,115,22,.04));
  border-left: 3px solid var(--gold);
  border-radius: 6px;
  font-size: 13px;
  color: #fde68a;
  animation: hintIn .3s var(--ease);
}
@keyframes hintIn {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: none; }
}

.hint-line .hint-label {
  flex-shrink: 0;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(251,191,36,.16);
  border: 1px solid rgba(251,191,36,.36);
  color: var(--gold);
}

.hint-line .hint-text {
  color: #fef3c7;
  line-height: 1.6;
}

.hint-line.hint-empty {
  background: rgba(110,140,190,.06);
  border-left-color: var(--tx-4);
  color: var(--tx-3);
  font-size: 12px;
  justify-content: center;
  letter-spacing: 1px;
}

/* ============================================================
   需求 25 · 改名按钮
   ============================================================ */
.small-btn {
  padding: 6px 16px;
  font-size: 12.5px;
  border-radius: var(--r-pill);
}

/* ============================================================
   需求 26 · 账号列表
   ============================================================ */
.account-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.account-row {
  display: flex;
  gap: 18px;
  padding: 16px 20px;
  background: rgba(10,16,32,.5);
  border: 1px solid var(--line-1);
  border-radius: var(--r-md);
  transition: all var(--fast);
}
.account-row:hover {
  border-color: var(--line-3);
  background: rgba(26,36,64,.55);
}

.account-info {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; gap: 6px;
}
.account-name {
  display: flex; align-items: center; gap: 10px;
  font-size: 15px; font-weight: 700;
}
.account-name a { color: var(--tx-1); }
.account-name a:hover { color: var(--cyan); }

.admin-badge {
  font-size: 10.5px; font-weight: 800; letter-spacing: 1.5px;
  padding: 2px 9px; border-radius: var(--r-pill);
  background: var(--grad-gold); color: #3a2a00;
}

.account-meta {
  display: flex; flex-wrap: wrap; gap: 16px;
  font-size: 12px; color: var(--tx-3);
}
.account-id {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  color: var(--cyan);
  padding: 1px 8px; border-radius: 5px;
  background: rgba(34,211,238,.08);
  border: 1px solid rgba(34,211,238,.20);
}

.account-hash {
  display: flex; align-items: center; gap: 10px;
  font-size: 11.5px;
  flex-wrap: wrap;
}
.account-hash .hash-label {
  color: var(--tx-4);
  font-size: 10.5px;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 1px 8px;
  border-radius: 4px;
  background: rgba(110,140,190,.08);
  border: 1px solid var(--line-1);
}
.account-hash code {
  font-size: 11px;
  word-break: break-all;
  color: var(--tx-2);
}

/* ============================================================
   需求 2 · Bingo 编辑器
   ============================================================ */
.bingo-stage {
  position: relative;
  overflow: hidden;
  min-height: 350px;
  max-height: 500px;
  background: #050810;
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  display: flex; align-items: center; justify-content: center;
  box-shadow: inset 0 0 80px rgba(0,0,0,.6);
}
#bingo-canvas {
  transform-origin: center center;
  user-select: none;
  box-shadow: 0 8px 40px rgba(0,0,0,.5);
  will-change: transform;
}

.bingo-list {
  display: flex; flex-direction: column; gap: 8px;
  max-height: 520px; overflow-y: auto;
  padding: 4px;
}
.bingo-item {
  display: grid;
  grid-template-columns: 40px 80px 1fr 32px;
  gap: 12px; align-items: center;
  padding: 8px 12px;
  background: rgba(10,16,32,.5);
  border: 1px solid var(--line-1);
  border-radius: var(--r-md);
  cursor: grab;
  transition: all var(--fast);
}
.bingo-item:hover { border-color: var(--line-3); }
.bingo-item.dragging { opacity: .5; cursor: grabbing; }

.bi-index {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 13px;
  background: var(--grad-accent); color: #fff;
  border-radius: 8px;
}
.bi-thumb {
  width: 80px; height: 46px; object-fit: cover;
  border-radius: 6px; background: #050810;
  border: 1px solid var(--line-1);
}
.bi-name {
  padding: 8px 12px; font-size: 13px;
}
.bi-del {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--tx-3);
  font-size: 16px; line-height: 1;
  cursor: pointer;
  transition: all var(--fast);
}
.bi-del:hover { border-color: var(--red); color: var(--red); }

/* 需求 3 · 上传者角标 */
.stage { position: relative; }
.stage-credit {
  position: absolute;
  right: 12px; bottom: 10px;
  padding: 4px 12px;
  font-size: 11.5px;
  letter-spacing: .4px;
  color: rgba(164,182,206,.65);
  background: rgba(5,8,16,.55);
  border: 1px solid rgba(110,140,190,.16);
  border-radius: var(--r-pill);
  pointer-events: none;
  user-select: none;
  backdrop-filter: blur(6px);
}

/* ============================================================
   多人房间 · 设置面板
   ============================================================ */
.room-settings {
  padding: 14px 18px;
  margin-bottom: 12px;
  background: rgba(10,16,32,.5);
  border: 1px solid var(--line-1);
  border-radius: var(--r-md);
}
.rs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px 16px;
  margin-bottom: 10px;
}
.rs-grid label {
  font-size: 12px; color: var(--tx-3);
  display: flex; flex-direction: column; gap: 4px;
}
.rs-grid input, .rs-grid select {
  padding: 6px 10px; font-size: 13px;
}
.rs-check {
  flex-direction: row !important; align-items: center; gap: 6px !important;
  font-size: 13px !important;
}

/* 房主徽章 */
.host-badge {
  font-size: 10px; font-weight: 800; letter-spacing: 1px;
  padding: 1px 7px; border-radius: var(--r-pill);
  background: var(--grad-gold); color: #3a2a00;
}

/* 观战者栏 */
.spectator-bar {
  padding: 6px 12px;
  margin-bottom: 8px;
  font-size: 12.5px;
  color: var(--tx-3);
  background: rgba(110,140,190,.06);
  border: 1px solid var(--line-1);
  border-radius: var(--r-pill);
  display: flex; align-items: center; gap: 8px;
}

/* 玩家栏自适应 */
.players-bar {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
}

/* ============================================================
   Bingo 锦标赛样式
   ============================================================ */
.bingo-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 20px; font-weight: 800; font-size: 20px;
}
.team-score.blue { color: #60a5fa; }
.team-score.yellow { color: #fbbf24; }
.bingo-stage {
  position: relative; flex: 1; display: flex; align-items: center; justify-content: center;
  background: #050810; border-radius: var(--r-lg); overflow: hidden;
  margin: 0 16px;
}
.bingo-board {
  display: grid; gap: 2px; width: 100%; max-width: 800px; aspect-ratio: 1;
}
.bingo-cell {
  position: relative; background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2); cursor: pointer;
  transition: background .2s;
}
.bingo-cell:hover { background: rgba(255,255,255,0.2); }
.bingo-cell.blue { background: rgba(59,130,246,.6); }
.bingo-cell.yellow { background: rgba(251,191,36,.6); }
.cell-num {
  position: absolute; right: 4px; bottom: 2px;
  font-family: Arial; font-size: 12px; color: #fff;
  text-shadow: 0 0 4px #000;
}
.bingo-teams {
  display: flex; gap: 20px; padding: 10px 20px;
}
.team-col { flex: 1; background: var(--panel); border-radius: var(--r-md); padding: 10px; }
.team-col.blue { border-left: 3px solid #3b82f6; }
.team-col.yellow { border-left: 3px solid #fbbf24; }
.bingo-waiting {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 20px;
  background: rgba(5,8,16,.85); z-index: 10;
}
.team-buttons { display: flex; gap: 16px; }
.btn.blue { background: #3b82f6; }
.btn.yellow { background: #fbbf24; color: #3a2a00; }
#bingo-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; opacity: 0.15; pointer-events: none; }