/* 默契问答 · Styles */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-padding-top:64px}
body{
  font-family:var(--font);background:var(--bg);color:var(--text);
  line-height:1.6;min-height:100vh;padding-bottom:72px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

.container{max-width:600px;margin:0 auto;padding:0 20px}

/* Top bar */
.topbar{
  position:sticky;top:0;z-index:40;
  background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
}
.topbar-inner{max-width:600px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:8px}
.brand-mark{width:28px;height:28px}
.brand-name{font-weight:700;font-size:16px;color:var(--text)}
.topbar-actions{display:flex;align-items:center;gap:8px}
.topbar-nav{display:none;gap:20px}
@media(min-width:600px){.topbar-nav{display:flex}}
.topbar-nav a{font-size:13px;font-weight:500;color:var(--text2);transition:color .15s}
.topbar-nav a:hover,.topbar-nav a.on{color:var(--primary)}

/* Bottom tabbar */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;display:flex;
  background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--border);
  padding:4px 8px calc(4px + env(safe-area-inset-bottom));
}
@media(min-width:600px){.tabbar{display:none}}
.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:5px 0;font-size:10px;color:var(--text2);transition:color .15s}
.tabbar a.active{color:var(--primary);font-weight:600}
.tabbar svg{width:22px;height:22px}

/* Hero */
.hero{text-align:center;padding:40px 0 20px}
.hero-rings{width:90px;height:90px;margin:0 auto 14px}
.hero-rings svg{width:90px;height:90px}
.hero-title{font-weight:800;font-size:28px;letter-spacing:-.02em;color:var(--text)}
.hero-sub{font-size:14px;color:var(--text2);margin-top:4px;line-height:1.6}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:11px 22px;border-radius:var(--radius-full);font-weight:600;
  font-size:14px;transition:all .2s;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--primary);color:#FFF}
.btn-primary:hover{background:var(--primary-hover);box-shadow:0 2px 8px rgba(79,70,229,.3)}
.btn-secondary{background:var(--surface);color:var(--primary);border:1.5px solid var(--border)}
.btn-secondary:hover{background:var(--primary-light);border-color:var(--primary)}
.btn-ghost{background:transparent;color:var(--text2)}
.btn-ghost:hover{background:var(--surface2)}
.btn-block{width:100%}
.btn-sm{padding:8px 16px;font-size:13px;min-height:36px}
.btn[disabled]{opacity:.4;pointer-events:none}

/* Cards */
.card{background:var(--surface);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);border:1px solid var(--border2)}
.card-tight{padding:16px}
.card-gradient{background:var(--gradient);color:#FFF;border:none;box-shadow:var(--shadow-md)}

/* Entry grid */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.entry-card{
  background:var(--surface);border-radius:var(--radius);padding:16px 8px;
  display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;
  box-shadow:var(--shadow);border:1px solid var(--border2);transition:all .2s;
}
.entry-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.entry-card:active{transform:scale(.97)}
.entry-icon{width:42px;height:42px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:20px}
.entry-label{font-size:12px;font-weight:600;color:var(--text)}

/* Tags */
.tag{display:inline-flex;align-items:center;padding:2px 8px;border-radius:var(--radius-full);font-size:11px;font-weight:600;background:var(--surface2);color:var(--primary)}
.tag-official{background:var(--accent-light);color:var(--accent)}

/* Section */
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin:28px 0 12px}
.section-title{font-weight:700;font-size:17px}
.section-link{font-size:13px;color:var(--primary);font-weight:600}

/* Test items */
.test-item{
  display:flex;align-items:center;gap:14px;background:var(--surface);
  border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow);
  margin-bottom:8px;transition:all .2s;border:1px solid var(--border2);
}
.test-item:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}
.test-thumb{width:46px;height:46px;border-radius:var(--radius-sm);flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:22px}
.test-meta{flex:1;min-width:0}
.test-title{font-weight:700;font-size:15px}
.test-sub{font-size:12px;color:var(--text2);display:flex;gap:8px;align-items:center;margin-top:2px}

/* Empty */
.empty{text-align:center;padding:48px 20px;color:var(--text2)}
.empty-icon{font-size:44px;margin-bottom:10px;opacity:.4}
.empty p{font-size:14px;margin-bottom:12px}

/* Auth */
.auth-wrap{min-height:calc(100vh - 60px);display:flex;align-items:center;justify-content:center;padding:20px}
.auth-card{width:100%;max-width:360px}
.auth-title{font-weight:800;font-size:24px;margin-bottom:4px}
.auth-sub{font-size:13px;color:var(--text2);margin-bottom:24px}
.auth-switch{text-align:center;margin-top:20px;font-size:13px;color:var(--text2)}
.auth-switch a{color:var(--primary);font-weight:600}

/* Forms */
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text2);margin-bottom:6px}
.field input[type=text],.field input[type=password],.field textarea,.field select{
  width:100%;padding:11px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);
  background:var(--surface);font-size:15px;transition:border-color .2s;color:var(--text);
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light);outline:none}
.field textarea{resize:vertical;min-height:80px}

/* Toggle */
.toggle-row{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--border2)}
.toggle-row:last-child{border-bottom:none}
.switch{position:relative;width:44px;height:26px}
.switch input{opacity:0;width:0;height:0}
.switch .track{position:absolute;inset:0;background:var(--border);border-radius:999px;transition:background .2s}
.switch .track::after{content:'';position:absolute;width:20px;height:20px;left:3px;top:3px;background:#FFF;border-radius:50%;transition:transform .2s}
.switch input:checked+.track{background:var(--primary)}
.switch input:checked+.track::after{transform:translateX(18px)}

/* Progress */
.progress{height:6px;background:var(--border);border-radius:3px;overflow:hidden}
.progress-fill{height:100%;background:var(--gradient);border-radius:3px;transition:width .3s}

/* Options */
.option-list{display:flex;flex-direction:column;gap:8px}
.option-btn{
  text-align:left;padding:16px 18px;border-radius:var(--radius-sm);
  border:1.5px solid var(--border);background:var(--surface);
  color:var(--text);font-size:15px;font-weight:500;transition:all .2s;cursor:pointer;
}
.option-btn:hover{border-color:var(--primary);background:var(--primary-light)}
.option-btn:active{transform:scale(.98)}
.option-btn.selected{border-color:var(--primary);background:var(--primary-light);font-weight:600}
.option-btn.correct{border-color:#22C55E;background:#F0FDF4}
.option-btn.wrong{border-color:var(--danger);background:var(--danger-light)}

/* Question builder */
.qb-item{border:1.5px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:16px;background:var(--surface)}
.qb-item-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.qb-opt-row{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.qb-opt-row input[type=text]{flex:1;padding:10px 12px;border:1.5px solid var(--border);border-radius:6px}

/* Ranking */
.rank-item{display:flex;align-items:center;gap:14px;padding:12px 8px;border-bottom:1px solid var(--border2)}
.rank-item:last-child{border-bottom:none}
.rank-pos{width:30px;text-align:center;font-weight:800;font-size:15px;color:var(--text2)}
.rank-item.top1 .rank-pos{color:#F59E0B;font-size:20px}
.rank-item.top2 .rank-pos{color:#94A3B8;font-size:20px}
.rank-item.top3 .rank-pos{color:#CD853F;font-size:20px}
.rank-avatar{width:36px;height:36px;border-radius:50%;background:var(--gradient);flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#FFF;font-weight:700;font-size:13px}
.rank-info{flex:1;min-width:0}
.rank-name{font-weight:600;font-size:14px}
.rank-time{font-size:12px;color:var(--text2)}
.rank-score{font-weight:800;font-size:17px;color:var(--primary)}

/* Tabs */
.tabs{display:flex;gap:6px;overflow-x:auto;padding:4px 0 10px;scrollbar-width:none;flex-wrap:wrap}
.tabs::-webkit-scrollbar{display:none}
.tab-chip{
  flex-shrink:0;padding:6px 13px;border-radius:var(--radius-full);
  border:1.5px solid var(--border);font-size:12px;font-weight:600;
  color:var(--text2);white-space:nowrap;transition:all .15s;
}
.tab-chip:hover:not(.active){border-color:var(--primary);color:var(--primary)}
.tab-chip.active{background:var(--primary);border-color:var(--primary);color:#FFF}

/* Search */
.search-box{
  display:flex;align-items:center;gap:10px;background:var(--surface);
  border:1.5px solid var(--border);border-radius:var(--radius-full);
  padding:11px 16px;margin-bottom:16px;transition:all .2s;
}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.search-box input{flex:1;border:none;outline:none;background:transparent;font-size:14px;color:var(--text)}
.search-box svg{width:20px;height:20px;color:var(--text2);flex-shrink:0}

/* Bank cards */
.bank-card{display:flex;flex-direction:column;gap:8px}
.bank-card-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:6px}
.bank-card-title{font-weight:700;font-size:15px;line-height:1.4}
.bank-card-opts{display:flex;flex-wrap:wrap;gap:4px}
.opt-chip{padding:3px 9px;border-radius:var(--radius-full);font-size:11px;font-weight:500;background:var(--surface2);color:var(--text2);border:1px solid var(--border2)}

/* Messages */
.msg-card{display:flex;flex-direction:column;gap:10px;transition:all .2s;cursor:pointer}
.msg-card:hover{box-shadow:var(--shadow-md)}
.msg-head{display:flex;align-items:center;justify-content:space-between}
.msg-user{display:flex;align-items:center;gap:12px}
.msg-avatar{width:36px;height:36px;border-radius:50%;flex-shrink:0;background:var(--gradient);display:flex;align-items:center;justify-content:center;color:#FFF;font-weight:700;font-size:13px}
.msg-avatar-lg{width:42px;height:42px;font-size:15px}
.msg-name{font-weight:600;font-size:14px}
.msg-time{font-size:12px;color:var(--text2)}
.msg-body{font-size:14px;line-height:1.65;word-break:break-word}
.msg-foot{display:flex;align-items:center;gap:12px;margin-top:2px}
.reply-hint{font-size:12px;color:var(--text2)}
#postBox textarea,textarea#replyInput{
  width:100%;padding:12px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);
  background:var(--surface);font-size:14px;resize:vertical;min-height:68px;color:var(--text);
}
#postBox textarea:focus,textarea#replyInput:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px var(--primary-light)}

/* Replies */
.reply-item{display:flex;gap:10px;padding:12px 8px;border-bottom:1px solid var(--border2)}
.reply-item:last-child{border-bottom:none}
.reply-avatar{width:30px;height:30px;border-radius:50%;flex-shrink:0;background:var(--surface2);display:flex;align-items:center;justify-content:center;color:var(--text2);font-weight:600;font-size:12px}
.reply-content{flex:1;min-width:0}
.reply-head{display:flex;align-items:center;gap:8px;margin-bottom:2px}
.reply-name{font-weight:600;font-size:13px}
.reply-time{font-size:11px;color:var(--text2)}
.reply-body{font-size:14px;line-height:1.55;word-break:break-word}

/* Profile */
.profile-head{display:flex;align-items:center;gap:16px;padding:24px 0}
.profile-avatar{width:60px;height:60px;border-radius:50%;background:var(--gradient);flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#FFF;font-weight:700;font-size:22px;box-shadow:0 2px 8px rgba(79,70,229,.3)}
.profile-name{font-weight:700;font-size:18px}
.profile-id{font-size:12px;color:var(--text2);margin-top:2px}
.mini-stats{display:flex;gap:8px;margin:16px 0}
.mini-stat{
  flex:1;background:var(--surface);border-radius:var(--radius);padding:16px 12px;
  text-align:center;box-shadow:var(--shadow);border:1px solid var(--border2);
}
.mini-stat b{display:block;font-weight:800;font-size:22px;color:var(--primary)}
.mini-stat span{font-size:11px;color:var(--text2);margin-top:2px}

/* Badges */
.badge-row{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.badge{padding:4px 10px;border-radius:var(--radius-full);font-size:11px;font-weight:600;background:var(--surface2);border:1px solid var(--border2)}
.badge.earned{background:var(--accent-light);border-color:var(--accent);color:var(--accent)}

/* Toast */
.toast{
  position:fixed;left:50%;bottom:96px;transform:translateX(-50%) translateY(12px);
  background:var(--text);color:var(--bg);padding:10px 20px;
  border-radius:var(--radius-full);font-size:13px;opacity:0;pointer-events:none;
  z-index:100;transition:all .25s;max-width:88vw;text-align:center;box-shadow:var(--shadow-lg);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* Theme toggle */
.theme-toggle{
  width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:16px;cursor:pointer;transition:all .15s;color:var(--text2);
}
.theme-toggle:hover{background:var(--surface2)}
.modal-backdrop{background:rgba(0,0,0,.4)}
[data-mode="dark"] .modal-backdrop{background:rgba(0,0,0,.7)}
[data-mode="dark"] input[type=text],[data-mode="dark"] input[type=password],[data-mode="dark"] textarea,[data-mode="dark"] select{background:var(--surface2);border-color:var(--border);color:var(--text)}
[data-mode="dark"] input:focus,[data-mode="dark"] textarea:focus{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-light)}
[data-mode="dark"] .search-box{background:var(--surface2)}
[data-mode="dark"] .option-btn{background:var(--surface2)}
[data-mode="dark"] #drawCanvas{background:#3a3a3a}
.icon-choice.chosen{border-color:var(--primary)!important;background:var(--primary-light);color:var(--primary)}

/* Skeleton loading */
@keyframes sk{0%{opacity:.4}50%{opacity:.8}100%{opacity:.4}}
.skeleton{animation:sk 1.5s infinite;border-radius:6px}
.sk-card{height:72px;background:var(--border);margin-bottom:8px;border-radius:var(--radius)}
.sk-title{height:20px;width:60%;background:var(--border);margin-bottom:8px}
.sk-text{height:14px;width:40%;background:var(--border)}

/* Utilities */
.stack{display:flex;flex-direction:column;gap:12px}
.row{display:flex;align-items:center}
.row-between{display:flex;align-items:center;justify-content:space-between}
.mt-6{margin-top:24px}.mt-7{margin-top:36px}.center{text-align:center}
.muted{color:var(--text2)}.small{font-size:12px}.num-display{font-variant-numeric:tabular-nums}