/* =========================================================
   Python 通关 · 极简高颜值备考刷题
   ========================================================= */
:root{
  /* 品牌核心色系：典雅黑曜石与深红墨韵 */
  --brand:#E11D48;
  --brand-2:#BE123C;
  --brand-3:#FB7185;
  --brand-soft:#FFF1F2;
  --brand-subtle:#FFF8F9;
  --brand-border:#FECDD3;
  
  /* 状态指示色 */
  --ok:#059669;
  --ok-soft:#ECFDF5;
  --ok-border:#A7F3D0;
  --bad:#DC2626;
  --bad-soft:#FEF2F2;
  --bad-border:#FECACA;
  --warn:#D97706;
  --warn-soft:#FFFBEB;
  
  /* 现代中性字色与背景 */
  --ink:#111827;
  --ink-2:#374151;
  --ink-3:#6B7280;
  --ink-4:#9CA3AF;
  --line:#EAECEF;
  --line-strong:#E2E8F0;
  --bg:#F6F7FA;
  --card:#FFFFFF;
  
  /* 难度标签色 */
  --lv1:#059669;
  --lv2:#D97706;
  --lv3:#DC2626;
  
  /* 圆角与阴影规范 */
  --r-xl:22px;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:8px;
  --r-xs:6px;
  --shadow-sm:0 1px 3px rgba(15,23,42,.02),0 4px 12px rgba(15,23,42,.03);
  --shadow:0 2px 8px rgba(15,23,42,.03),0 12px 28px -4px rgba(15,23,42,.05);
  --shadow-md:0 16px 40px -12px rgba(18,20,29,.35);
  --shadow-lg:0 20px 48px -12px rgba(18,20,29,.45);
  --tabbar-h:60px;
  --pad:16px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;
  overscroll-behavior-y:none;
}
button{font-family:inherit;font-size:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,select{font-family:inherit;font-size:16px}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- 骨架：手机 App 容器 ---------- */
.app{
  max-width:500px;margin:0 auto;min-height:100%;background:var(--bg);
  padding-bottom:calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 10px);
  box-shadow:0 0 50px rgba(0,0,0,.06);
}
.appbar{
  position:sticky;top:0;z-index:30;height:52px;
  display:flex;align-items:center;padding:0 12px;
  background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid rgba(240,242,245,.8);transition:all .2s;
}
.appbar.is-stuck{border-bottom-color:var(--line);box-shadow:var(--shadow-sm)}
.appbar__back{
  width:36px;height:36px;font-size:26px;line-height:1;color:var(--ink-2);
  display:none;align-items:center;justify-content:center;padding:0;
  border-radius:50%;transition:background .15s;
}
.appbar__back:active{background:var(--bg)}
.appbar__back.show{display:flex}
.appbar__title{
  font-size:17px;font-weight:700;flex:1;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap;letter-spacing:.3px;
}
.appbar__right{display:flex;gap:8px;align-items:center}
.appbar__right button{
  height:32px;padding:0 12px;border-radius:99px;background:#F1F3F7;
  color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;
  font-size:12.5px;font-weight:600;white-space:nowrap;transition:all .15s;border:1px solid #E5E7EB;
}
.appbar__right button:active{background:#E5E7EB;transform:scale(.98)}
.view{padding:14px 16px 24px;animation:fade .22s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

.tabbar{
  position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:500px;z-index:40;
  display:flex;background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-top:1px solid rgba(240,242,245,.9);padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 16px rgba(0,0,0,.03);
}
.tab{
  flex:1;height:var(--tabbar-h);display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:4px;font-size:11px;color:var(--ink-3);font-weight:500;transition:all .15s;position:relative;
}
.tab__ico{display:flex;align-items:center;justify-content:center;color:var(--ink-4);transition:transform .2s,color .2s}
.tab.active{color:var(--brand);font-weight:600}
.tab.active .tab__ico{color:var(--brand);transform:translateY(-1px)}
.tab.active::after{
  content:"";position:absolute;bottom:calc(env(safe-area-inset-bottom) + 4px);
  width:14px;height:3px;background:var(--brand);border-radius:99px;
}

/* ---------- 通用组件 ---------- */
.card{
  background:var(--card);border-radius:var(--r-xl);padding:18px;
  box-shadow:var(--shadow);margin-bottom:14px;border:1px solid #EAECEF;
  transition:all .18s;
}
.card--flat{box-shadow:none;border:1px solid var(--line)}
.sec-title{
  display:flex;align-items:center;justify-content:space-between;
  margin:22px 4px 12px;font-size:16px;font-weight:600;color:var(--ink);
  letter-spacing:-.2px;
}
.sec-title small{font-size:12px;font-weight:400;color:var(--ink-3)}
.muted{color:var(--ink-3);font-size:12.5px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.search-box{position:relative;margin-bottom:14px}
.search-box input{
  width:100%;padding:12px 38px 12px 40px;border:1.5px solid var(--line);
  border-radius:999px;background:#fff;outline:0;font-size:14.5px;
  box-shadow:var(--shadow-sm);transition:all .2s;
}
.search-box input:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(17,24,39,.08)}
.search-box__ico{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:15px;pointer-events:none;color:var(--ink-3)}
.search-box__clear{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:14px;color:var(--ink-3);width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:50%}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}

.btn{
  display:flex;align-items:center;justify-content:center;gap:6px;
  width:100%;padding:13px 20px;border-radius:14px;
  background:#111827;
  color:#fff;font-weight:600;text-align:center;font-size:15px;
  box-shadow:0 4px 14px rgba(17,24,39,.12);transition:all .18s;
}
.btn:active{transform:scale(.98);opacity:.92}
.btn--ghost{background:var(--brand-soft);color:var(--brand);box-shadow:none;border:1px solid var(--brand-border)}
.btn--ghost:active{background:var(--brand-border);transform:scale(.98)}
.btn--line{background:#fff;color:var(--ink-2);border:1.5px solid var(--line);box-shadow:none}
.btn--line:active{background:var(--bg);transform:scale(.98)}
.btn--red{background:var(--bad);color:#fff}
.btn--red:active{opacity:.9}
.btn--sm{padding:7px 14px;font-size:13px;width:auto;display:inline-flex;border-radius:10px}
.btn[disabled]{opacity:.4;pointer-events:none;box-shadow:none}
.row{display:flex;gap:10px}
.row>*{flex:1}

.chip{
  display:inline-flex;align-items:center;gap:4px;padding:4px 10px;
  border-radius:999px;font-size:11.5px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);border:1px solid var(--brand-border);
}
.chip--ok{background:var(--ok-soft);color:var(--ok);border-color:var(--ok-border)}
.chip--bad{background:var(--bad-soft);color:var(--bad);border-color:var(--bad-border)}
.chip--warn{background:var(--warn-soft);color:var(--warn);border-color:#FFE7BA}
.chip--gray{background:#F2F4F7;color:var(--ink-3);border-color:transparent}

/* ---------- 首页 ---------- */
.hero{
  border-radius:var(--r-xl);padding:22px 20px 20px;color:#fff;position:relative;overflow:hidden;margin-bottom:18px;
  background:linear-gradient(145deg,#14161F 0%,#1D212D 55%,#242938 100%);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-md);
}
.hero::after{
  content:"";position:absolute;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(225,29,72,.14) 0%,rgba(225,29,72,0) 70%);
  right:-40px;top:-60px;pointer-events:none;
}
.hero h1{margin:0 0 6px;font-size:22px;font-weight:700;letter-spacing:-.3px;display:flex;align-items:center;gap:6px;color:#fff}
.hero p{margin:0 0 16px;color:rgba(255,255,255,.7);font-size:13px;line-height:1.5}
.hero__stats{
  display:flex;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);
  border-radius:14px;padding:12px 0;position:relative;z-index:1;
}
.hero__stat{
  flex:1;text-align:center;position:relative;padding:0 8px;background:none;border:none;border-radius:0;
}
.hero__stat + .hero__stat::before{
  content:"";position:absolute;left:0;top:18%;height:64%;width:1px;background:rgba(255,255,255,.12);
}
.hero__stat b{display:block;font-size:21px;line-height:1.15;font-weight:700;color:#fff;font-family:ui-monospace,SFMono-Regular,sans-serif;font-variant-numeric:tabular-nums}
.hero__stat span{font-size:11px;color:rgba(255,255,255,.55);margin-top:4px;display:block}

.mode{
  display:flex;align-items:center;gap:14px;padding:14px 16px;background:#fff;
  border-radius:var(--r-lg);box-shadow:var(--shadow-sm);margin-bottom:10px;
  width:100%;text-align:left;border:1px solid #EAECEF;
  transition:all .18s cubic-bezier(.25,.8,.25,1);
}
.mode:active{transform:scale(.985);background:#F9FAFC}
.mode__ico{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;
  justify-content:center;background:#F1F3F7;color:#4B5563;flex:none;box-shadow:none;
}
.mode__body{flex:1;min-width:0;display:flex;flex-direction:column}
.mode__t{font-weight:600;font-size:15px;color:var(--ink);line-height:1.2;display:block}
.mode__d{font-size:12px;color:var(--ink-3);margin-top:4px;display:block;line-height:1.3}
.mode__arrow{color:#CBD5E1;font-size:18px;margin-left:auto;transition:transform .15s}
.mode:active .mode__arrow{transform:translateX(2px)}

.chcard{
  background:#fff;border-radius:var(--r-lg);padding:14px 10px;text-align:center;
  box-shadow:var(--shadow);border:1px solid rgba(0,0,0,.02);transition:all .15s;
}
.chcard:active{transform:scale(.97)}
.chcard b{display:block;font-size:13px;margin:8px 0 2px;font-weight:700}
.chcard span{font-size:11px;color:var(--ink-3)}
.ring{width:42px;height:42px;margin:0 auto}
.ring circle{fill:none;stroke-width:4.5}
.ring .bg{stroke:#F0F1F5}
.ring .fg{stroke:var(--brand);stroke-linecap:round;transform:rotate(-90deg);transform-origin:50% 50%}

.lvbar{
  display:flex;background:#fff;border-radius:999px;padding:4px;
  box-shadow:var(--shadow-sm);margin-bottom:16px;border:1px solid var(--line);
}
.lvbar button{
  flex:1;padding:9px 0;border-radius:999px;font-size:13.5px;
  color:var(--ink-2);font-weight:600;transition:all .18s;
}
.lvbar button.active{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#fff;box-shadow:0 3px 10px rgba(255,36,66,.25);font-weight:700;
}

/* ---------- 答题 ---------- */
.qbar{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.qbar__track{flex:1;height:7px;border-radius:99px;background:#EBEDF2;overflow:hidden}
.qbar__fill{height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-3));border-radius:99px;transition:width .3s}
.qbar__num{font-size:13px;color:var(--ink-3);font-weight:700;white-space:nowrap}
.qstem{font-size:17.5px;font-weight:700;line-height:1.6;margin:0 0 6px;color:var(--ink);letter-spacing:.2px}
.qmeta{display:flex;gap:6px;margin-bottom:14px;flex-wrap:wrap}
.code{
  background:#14161F;color:#EAEBF5;border-radius:var(--r-md);padding:14px 15px;margin:12px 0;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.75;
  overflow-x:auto;white-space:pre;-webkit-overflow-scrolling:touch;border:1px solid rgba(255,255,255,.08);box-shadow:0 4px 16px rgba(0,0,0,.15);
}
.code .k{color:#FF7B90}.code .s{color:#98E68D}.code .n{color:#FFB17A}.code .c{color:#7E8399;font-style:italic}.code .f{color:#7FD1FF}
.opt{
  display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;
  padding:14px 16px;border-radius:var(--r-lg);background:#fff;border:1.5px solid var(--line);
  margin-bottom:11px;font-size:15px;line-height:1.5;transition:all .15s;
  box-shadow:var(--shadow-sm);
}
.opt__k{
  width:26px;height:26px;border-radius:8px;background:#F1F3F7;color:var(--ink-2);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
  flex:none;margin-top:1px;transition:all .15s;font-family:ui-monospace,Menlo,monospace;
}
.opt__t{flex:1;word-break:break-word}
.opt:active{background:var(--brand-subtle);border-color:var(--brand-border);transform:scale(.985)}
.opt.is-right{border-color:var(--ok);background:var(--ok-soft);box-shadow:0 2px 10px rgba(5,150,105,.12)}
.opt.is-right .opt__k{background:var(--ok);color:#fff}
.opt.is-wrong{border-color:var(--bad);background:var(--bad-soft);box-shadow:0 2px 10px rgba(220,38,38,.12)}
.opt.is-wrong .opt__k{background:var(--bad);color:#fff}
.opt.is-selected{border-color:var(--brand);background:var(--brand-soft);box-shadow:0 2px 10px rgba(225,29,72,.12)}
.opt.is-selected .opt__k{background:var(--brand);color:#fff}
.opt[disabled]{pointer-events:none}
.judge-row{display:flex;gap:10px}
.judge-row .opt{flex:1;justify-content:center;text-align:center;font-weight:600;padding:14px}

.card-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:18px 0;max-height:48vh;overflow-y:auto;padding:3px}
.card-item{
  aspect-ratio:1;border-radius:14px;border:1.5px solid var(--line);background:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  color:var(--ink-2);transition:all .15s;box-shadow:var(--shadow-sm);
}
.card-item.is-current{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);color:var(--brand);font-weight:800}
.card-item.is-done{background:var(--brand);border-color:var(--brand);color:#fff}
.card-item.is-right{background:var(--ok);border-color:var(--ok);color:#fff}
.card-item.is-wrong{background:var(--bad);border-color:var(--bad);color:#fff}
.card-legend{display:flex;justify-content:center;gap:16px;font-size:12px;color:var(--ink-3);margin-top:8px}
.card-legend span{display:flex;align-items:center;gap:5px}
.card-legend i{width:8px;height:8px;border-radius:50%;display:inline-block}
#qTimer.warn{color:var(--bad);font-weight:800;animation:blink 1s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.4}}
.qbar{cursor:pointer}
.qbar:hover{opacity:.85}
.appbar__btn{
  height:32px;padding:0 12px;border-radius:99px;background:var(--brand-soft);
  color:var(--brand);font-size:12.5px;font-weight:700;display:inline-flex;
  align-items:center;gap:4px;border:1px solid var(--brand-border);
}

.ansbox{margin:8px 0 14px}
.ansbox input{
  width:100%;padding:13px 16px;border:1.5px solid var(--line);border-radius:var(--r-md);
  background:#fff;outline:0;font-size:15px;transition:all .18s;box-shadow:var(--shadow-sm);
}
.ansbox input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.ansbox textarea{
  width:100%;padding:13px 16px;border:1.5px solid var(--line);border-radius:var(--r-md);
  background:#fff;outline:0;resize:vertical;font-size:15px;line-height:1.6;font-family:inherit;
  transition:all .18s;box-shadow:var(--shadow-sm);
}
.ansbox textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.expl{
  margin-top:14px;padding:16px;border-radius:var(--r-lg);background:#FAFBFD;
  border:1px solid #E2E5F0;border-left:4px solid var(--brand);font-size:13.5px;line-height:1.65;
  box-shadow:0 2px 8px rgba(0,0,0,.03);
}
.expl__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.expl__badge{display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:700;padding:4px 10px;border-radius:99px}
.expl__badge--ok{background:rgba(10,106,71,.1);color:var(--ok)}
.expl__badge--bad{background:rgba(185,43,36,.1);color:var(--bad)}
.expl__meta{font-size:12px;color:var(--ink-3)}
.expl__myans{padding:7px 11px;background:#FFF0F2;border-radius:8px;font-size:13px;color:var(--bad);margin-bottom:10px;border:1px solid rgba(185,43,36,.15)}
.expl__target{margin:10px 0}
.expl__target-label{font-size:12px;font-weight:700;color:var(--ink-2);margin-bottom:4px}
.expl__ans{font-family:ui-monospace,Menlo,Consolas,monospace;background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px 12px;display:block;white-space:pre-wrap;color:var(--brand);font-weight:700;word-break:break-all}
.expl__body{margin-top:12px;border-top:1px dashed var(--line);padding-top:10px}
.expl__body-title{font-size:13px;font-weight:700;color:var(--ink);margin-bottom:6px;display:flex;align-items:center;gap:4px}
.expl__points{display:flex;flex-direction:column;gap:5px}
.expl__point-item{display:flex;gap:6px;font-size:13px;color:var(--ink-2);line-height:1.6}
.expl__point-dot{color:var(--brand);font-weight:800;flex:none}
.expl__ai-btn{margin-top:10px;display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:99px;background:linear-gradient(135deg,#7C3AED,#5B5BD6);color:#fff;font-size:12.5px;font-weight:600;border:none;cursor:pointer;box-shadow:0 2px 6px rgba(124,58,237,.25);transition:.15s}
.expl__ai-btn:hover{opacity:.92;transform:translateY(-1px)}
.expl__ai-btn:active{transform:translateY(0)}
.qfoot{display:flex;gap:10px;margin-top:16px}
.qfoot .btn--line{flex:0 0 80px}

/* ---------- 成绩报告 ---------- */
.r-hero{
  background:linear-gradient(150deg,#14161F 0%,#1F232F 50%,#2A303F 100%);
  color:#fff;border-radius:var(--r-xl);padding:28px 20px 24px;text-align:center;
  margin-bottom:16px;position:relative;overflow:hidden;
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-md);
}
.r-hero::after{
  content:"";position:absolute;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(225,29,72,.14) 0%,rgba(225,29,72,0) 70%);
  right:-40px;top:-60px;pointer-events:none;
}
.r-hero__tag{
  display:inline-block;padding:5px 14px;border-radius:99px;
  background:rgba(255,255,255,.09);backdrop-filter:blur(10px);
  font-size:11.5px;font-weight:600;margin-bottom:12px;border:1px solid rgba(255,255,255,.14);
  color:#E2E8F0;letter-spacing:.5px;
}
.r-hero__score{font-size:54px;font-weight:800;line-height:1.05;letter-spacing:-1px;font-family:ui-monospace,SFMono-Regular,sans-serif;font-variant-numeric:tabular-nums;color:#fff}
.r-hero__score small{font-size:18px;font-weight:600;opacity:.75;margin-left:2px}
.r-hero__badge{font-size:17px;font-weight:700;margin-top:8px;color:#F1F5F9}
.r-hero__tip{font-size:13px;color:rgba(255,255,255,.7);margin-top:8px;line-height:1.5}
.r-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}
.r-cell{background:#fff;border-radius:var(--r-lg);padding:14px 8px;text-align:center;box-shadow:var(--shadow);border:1px solid rgba(0,0,0,.02)}
.r-cell b{display:block;font-size:20px;font-weight:800;color:var(--ink)}
.r-cell span{font-size:11.5px;color:var(--ink-3);margin-top:2px;display:block}
.radar{width:100%;height:auto;max-width:300px;display:block;margin:0 auto}
.radar text{font-size:9.5px;fill:var(--ink-3);stroke:none;font-family:inherit;font-weight:500}
.radar polygon{fill:none;stroke:#EAEBF0}
.radar polygon.area{fill:rgba(255,36,66,.18);stroke:var(--brand);stroke-width:2}
.bar-item{margin-bottom:12px}
.bar-item__top{display:flex;justify-content:space-between;font-size:13px;margin-bottom:5px;font-weight:600}
.bar-item__track{height:8px;border-radius:99px;background:#EFF0F4;overflow:hidden}
.bar-item__fill{height:100%;border-radius:99px;transition:width .5s}
.wrong-item{
  display:flex;gap:12px;padding:14px;background:#fff;border-radius:var(--r-lg);
  box-shadow:var(--shadow);margin-bottom:11px;border:1px solid rgba(0,0,0,.02);
}
.wrong-item__n{
  width:24px;height:24px;border-radius:8px;background:var(--bad-soft);
  color:var(--bad);font-size:12px;font-weight:800;display:flex;
  align-items:center;justify-content:center;flex:none;margin-top:1px;
}
.wrong-item__q{font-size:14px;font-weight:700;line-height:1.5;color:var(--ink)}
.wrong-item__a{font-size:12px;color:var(--ink-3);margin-top:4px}

/* ---------- 学习/视频 ---------- */
.vcard{background:#fff;border-radius:var(--r-xl);box-shadow:var(--shadow);overflow:hidden;margin-bottom:14px;border:1px solid rgba(0,0,0,.02)}
.vcard__top{display:flex;gap:12px;padding:14px;align-items:center;width:100%;text-align:left}
.vcard__n{
  width:42px;height:42px;border-radius:14px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;
  flex:none;font-size:15px;box-shadow:0 3px 10px rgba(255,36,66,.2);
}
.vcard__t{font-weight:700;font-size:15px;color:var(--ink)}
.vcard__d{font-size:12px;color:var(--ink-3);margin-top:2px}
.vrow__go{color:var(--ink-4);margin-left:auto;font-size:18px}
video{width:100%;display:block;background:#000;max-height:56vh}
.note{background:#FFF9F0;border:1px solid #FFE7BA;border-radius:var(--r-lg);padding:14px 16px;font-size:13px;line-height:1.7;color:#9254DE;margin-bottom:14px}
.note b{color:#613400}

/* ---------- 我的 / 通用 ---------- */
.me-card{
  display:flex;align-items:center;gap:16px;
  background:linear-gradient(145deg,#14161F 0%,#1D212D 55%,#242938 100%);
  color:#fff;border-radius:var(--r-xl);padding:22px 20px;margin-bottom:16px;
  box-shadow:var(--shadow-md);position:relative;overflow:hidden;
  border:1px solid rgba(255,255,255,.08);
}
.me-card::after{
  content:"";position:absolute;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(225,29,72,.14) 0%,rgba(225,29,72,0) 70%);
  right:-30px;top:-40px;pointer-events:none;
}
.me-avatar{width:56px;height:56px;border-radius:18px;background:rgba(255,255,255,.08);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;font-size:26px;border:1px solid rgba(255,255,255,.15);flex:none}
.me-name{font-size:18px;font-weight:700;letter-spacing:-.2px}
.me-sub{font-size:12.5px;color:rgba(255,255,255,.65);margin-top:4px}
.list-row{display:flex;align-items:center;gap:14px;padding:15px 18px;background:#fff;width:100%;text-align:left;font-size:15px;font-weight:500;transition:background .15s}
a.list-row,a.vcard__top{color:inherit;text-decoration:none}
.list-row:active{background:#FAFAFB}
.list-row+.list-row{border-top:1px solid var(--line)}
.list-row .ico{width:26px;text-align:center;font-size:18px}
.list-row .arrow{margin-left:auto;color:var(--ink-4)}
.empty{text-align:center;padding:52px 20px;color:var(--ink-3)}
.empty__ico{font-size:46px;margin-bottom:12px;opacity:.7}
.empty__t{font-size:15px;font-weight:700;color:var(--ink-2);margin-bottom:4px}

/* ---------- 弹层 / 提示 ---------- */
.toast{
  position:fixed;left:50%;bottom:calc(var(--tabbar-h) + 26px);transform:translate(-50%,10px);
  background:rgba(26,26,26,.88);backdrop-filter:blur(10px);color:#fff;
  padding:10px 18px;border-radius:999px;font-size:13.5px;font-weight:500;
  z-index:80;opacity:0;pointer-events:none;transition:.25s;max-width:80vw;text-align:center;
  box-shadow:0 4px 16px rgba(0,0,0,.15);
}
.toast.show{opacity:1;transform:translate(-50%,0)}
.sheet{position:fixed;inset:0;z-index:90;display:flex;align-items:flex-end;justify-content:center}
.sheet[hidden]{display:none}
.sheet__mask{position:absolute;inset:0;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);animation:fade .2s}
.sheet__body{
  position:relative;width:100%;max-width:500px;background:#fff;border-radius:24px 24px 0 0;
  padding:20px 18px calc(20px + env(safe-area-inset-bottom));max-height:88vh;overflow:auto;animation:up .26s cubic-bezier(.2,.8,.3,1);
  box-shadow:0 -6px 30px rgba(0,0,0,.12);
}
@keyframes up{from{transform:translateY(100%)}to{transform:none}}
.sheet__title{font-size:17px;font-weight:800;margin:0 0 14px;text-align:center;letter-spacing:.2px}
.sheet__t{font-size:17px;font-weight:800;margin:0 0 14px;text-align:center}
.poster{max-height:60vh;width:auto;max-width:100%;margin:0 auto;border-radius:18px;display:block;box-shadow:var(--shadow-lg)}
.filter-tabs{display:flex;gap:8px;margin-bottom:14px}
.filter-tab{
  flex:1;padding:9px 0;background:#fff;border-radius:999px;font-size:13px;
  font-weight:600;color:var(--ink-2);border:1px solid var(--line);text-align:center;transition:all .15s;
}
.filter-tab.active{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#fff;border-color:transparent;box-shadow:0 2px 8px rgba(255,36,66,.25);
}
.fld{
  width:100%;padding:13px 16px;border:1.5px solid var(--line);border-radius:var(--r-md);
  background:#fff;outline:0;font-size:15.5px;transition:all .18s;box-shadow:var(--shadow-sm);
}
.fld:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.seg{display:flex;background:#F2F4F7;border-radius:999px;padding:4px;margin-bottom:14px}
.seg button{flex:1;padding:8px 0;border-radius:999px;font-size:13px;color:var(--ink-2);font-weight:600;transition:all .18s}
.seg button.active{background:#fff;color:var(--brand);box-shadow:0 2px 6px rgba(0,0,0,.08);font-weight:700}
.setting{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;background:#fff;font-size:15px}
.setting+.setting{border-top:1px solid var(--line)}
.switch{width:46px;height:26px;border-radius:99px;background:#E3E5EB;position:relative;transition:.2s;flex:none;cursor:pointer}
.switch.on{background:var(--brand)}
.switch::after{content:"";position:absolute;width:22px;height:22px;border-radius:50%;background:#fff;top:2px;left:2px;transition:.2s;box-shadow:0 1px 4px rgba(0,0,0,.15)}
.switch.on::after{transform:translateX(20px)}
.grid-dots{display:flex;gap:5px}
.grid-dots i{width:5px;height:5px;border-radius:50%;background:#D0D3DC}
.grid-dots i.on{background:var(--brand)}

/* ---------- 深色模式 ---------- */
@media (prefers-color-scheme:dark){
  :root{
    --ink:#F2F3F7;--ink-2:#B6B9C6;--ink-3:#7F8296;--line:#2A2C3A;
    --bg:#121319;--card:#1B1D27;--brand-soft:#262747;--ok-soft:#12331F;--bad-soft:#3A1B18;
  }
  body{background:#0C0D12}
  .app{background:var(--bg);box-shadow:none}
  .appbar{background:rgba(18,19,25,.86)}
  .tabbar{background:rgba(27,29,39,.92)}
  .opt,.mode,.chcard,.lvbar,.r-cell,.code,.card-item{background:var(--card)}
  .mode,.chcard,.lvbar{box-shadow:none;border:1px solid var(--line)}
  .card-item{border-color:var(--line);color:var(--ink)}
  .appbar__btn{background:var(--brand-soft);color:#fff}
  .opt{background:var(--card)}
  .expl{background:#191B26}
  .code{background:#0E0F13}
  .note{background:#2A2113;border-color:#4A3A1C;color:#E6C88A}
  .sheet__body{background:var(--card)}
  .seg{background:#23252F}
  .seg button.active{background:var(--card)}
  .empty__t{color:var(--ink-2)}
  .ring .bg{stroke:#2A2C3A}
  .btn--line{background:transparent;color:var(--ink);border-color:var(--line)}
  .ansbox input,.ansbox textarea,.fld{background:var(--card);color:var(--ink);border-color:var(--line)}
  .search-box input{background:var(--card);color:var(--ink);border-color:var(--line);box-shadow:none}
  .filter-tab{background:var(--card);color:var(--ink);border-color:var(--line)}
  .filter-tab.active{background:var(--brand);color:#fff;border-color:var(--brand)}
  .list-row{background:var(--card)}
  .vcard,.card{background:var(--card)}
  .expl__ans{background:#23252F}
  .poster{background:var(--card)}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}