/* ==========================================================================
   中医经典三级 · 背诵网站  —— 宣纸／朱印 主题
   ========================================================================== */
:root{
  --paper:#F6F1E6;
  --paper2:#FBF7EE;
  --card:#FFFCF6;
  --card2:#F8F3E8;
  --ink:#2A2521;
  --ink2:#5B5248;
  --ink3:#8D8276;
  --line:#E5DBC8;
  --line2:#D7C9AF;
  --cinnabar:#9E2B25;
  --cinnabar-l:#C0413A;
  --gold:#B08A4A;
  --gold-l:#D8B978;
  --indigo:#1F3B6E;
  --green:#2E5A2E;
  --shadow:0 1px 2px rgba(80,60,30,.05),0 8px 24px rgba(80,60,30,.07);
  --shadow-s:0 1px 2px rgba(80,60,30,.06);
  --topbg:rgba(246,241,230,.9);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;
  --r:14px;
  --side:236px;
}
html[data-theme="night"]{
  --paper:#14161A;
  --paper2:#171A20;
  --card:#1D2129;
  --card2:#232830;
  --ink:#E9E3D7;
  --ink2:#B4AC9E;
  --ink3:#837B6F;
  --line:#2C323B;
  --line2:#3A424D;
  --cinnabar:#D4574C;
  --cinnabar-l:#E0705F;
  --gold:#D3AE6A;
  --gold-l:#E8CD97;
  --indigo:#7C9BD6;
  --green:#7BB07B;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.35);
  --shadow-s:0 1px 2px rgba(0,0,0,.3);
  --topbg:rgba(20,22,26,.9);
}
*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--serif);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(circle at 12% 8%,rgba(176,138,74,.055),transparent 42%),
    radial-gradient(circle at 88% 92%,rgba(158,43,37,.045),transparent 45%);
  background-attachment:fixed;
}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
a{color:var(--cinnabar);text-decoration:none;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-thumb{background:var(--line2);border-radius:8px;border:2px solid var(--paper);}
::-webkit-scrollbar-track{background:transparent;}

/* ---------------------------------------------------------------- 布局 */
#app{display:flex;min-height:100vh;}
.side{
  width:var(--side);flex:0 0 var(--side);position:sticky;top:0;height:100vh;
  background:linear-gradient(180deg,var(--paper2),var(--paper));
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:22px 0 14px;z-index:30;
}
.brand{padding:0 22px 16px;border-bottom:1px solid var(--line);margin-bottom:10px;}
.brand h1{
  font-size:19px;margin:0;letter-spacing:.10em;font-weight:700;
  display:flex;align-items:center;gap:8px;
}
.seal{
  display:inline-grid;place-items:center;width:26px;height:26px;flex:0 0 26px;
  background:var(--cinnabar);color:#FFF6EC;border-radius:5px;
  font-size:12px;font-weight:700;letter-spacing:0;line-height:1;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);
}
.brand p{margin:7px 0 0;font-size:11.5px;color:var(--ink3);letter-spacing:.04em;font-family:var(--sans);}
.nav{padding:4px 12px;overflow-y:auto;flex:1;}
.nav button{
  display:flex;align-items:center;gap:10px;width:100%;padding:9px 12px;margin:2px 0;
  border-radius:9px;color:var(--ink2);font-size:14.5px;text-align:left;transition:.16s;
}
.nav button .ic{width:19px;text-align:center;font-size:15px;opacity:.85;flex:0 0 19px;}
.nav button:hover{background:rgba(176,138,74,.10);color:var(--ink);}
.nav button.on{
  background:var(--card);color:var(--cinnabar);font-weight:600;
  box-shadow:var(--shadow-s);border-left:2px solid var(--cinnabar);padding-left:10px;
}
.nav .grp-t{
  font-family:var(--sans);font-size:10.5px;letter-spacing:.15em;color:var(--ink3);
  padding:12px 12px 4px;text-transform:uppercase;
}
.side-foot{
  padding:12px 20px 4px;border-top:1px solid var(--line);margin-top:8px;
  font-size:11px;color:var(--ink3);font-family:var(--sans);line-height:1.6;
}
.side-foot b{color:var(--cinnabar);font-weight:600;}

main{flex:1;min-width:0;display:flex;flex-direction:column;}
.topbar{
  position:sticky;top:0;z-index:25;display:flex;align-items:center;gap:10px;
  padding:10px 26px;background:var(--topbg);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.topbar .crumb{font-size:13px;color:var(--ink3);letter-spacing:.05em;flex:1;}
.topbar .crumb b{color:var(--ink);font-weight:600;}
.tbtn{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:20px;
  border:1px solid var(--line);background:var(--card);color:var(--ink2);font-size:13px;
  font-family:var(--sans);transition:.16s;white-space:nowrap;
}
.tbtn:hover{border-color:var(--gold);color:var(--cinnabar);}
#pageWrap{padding:24px 26px 60px;max-width:1080px;width:100%;}
.page{display:none;animation:fade .32s ease;}
.page.on{display:block;}
@keyframes fade{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}

/* ---------------------------------------------------------------- 通用件 */
.h2{
  font-size:20px;margin:0 0 4px;letter-spacing:.06em;display:flex;align-items:center;gap:10px;
}
.h2::before{content:"";width:4px;height:19px;background:var(--cinnabar);border-radius:2px;display:inline-block;}
.h2 .sub{font-size:12px;color:var(--ink3);font-family:var(--sans);font-weight:400;letter-spacing:0;}
.lead{color:var(--ink2);font-size:14px;margin:2px 0 20px;font-family:var(--sans);}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow);padding:20px 22px;
}
.card+.card{margin-top:16px;}
.card.flat{box-shadow:var(--shadow-s);}
.row{display:flex;gap:14px;flex-wrap:wrap;}
.grid{display:grid;gap:14px;}
.g2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));}
.g3{grid-template-columns:repeat(auto-fit,minmax(190px,1fr));}
.g4{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));}
.sp{flex:1;}
.muted{color:var(--ink3);font-size:12.5px;font-family:var(--sans);}
.mono{font-family:ui-monospace,Consolas,monospace;}
.tag{
  display:inline-block;padding:1px 8px;border-radius:20px;font-size:11.5px;
  font-family:var(--sans);border:1px solid currentColor;line-height:1.7;white-space:nowrap;
}
.tag.l1{color:#8B1A1A;background:rgba(139,26,26,.07);}
.tag.l2{color:#1F3B6E;background:rgba(31,59,110,.07);}
.tag.l3{color:#2E5A2E;background:rgba(46,90,46,.07);}
.tag.l0{color:#6B5B45;background:rgba(107,91,69,.07);}
html[data-theme="night"] .tag.l1{color:#E88B82;background:rgba(232,139,130,.12);}
html[data-theme="night"] .tag.l2{color:#8FB0E8;background:rgba(143,176,232,.12);}
html[data-theme="night"] .tag.l3{color:#8CC08C;background:rgba(140,192,140,.12);}
html[data-theme="night"] .tag.l0{color:#C0B49E;background:rgba(192,180,158,.12);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:9px 18px;border-radius:9px;font-size:14px;font-family:var(--sans);
  border:1px solid var(--line2);background:var(--card);color:var(--ink2);transition:.16s;
}
.btn:hover{border-color:var(--gold);color:var(--cinnabar);transform:translateY(-1px);}
.btn.pri{background:var(--cinnabar);color:#FFF6EC;border-color:var(--cinnabar);font-weight:600;}
.btn.pri:hover{background:var(--cinnabar-l);color:#FFF6EC;}
.btn.gh{background:transparent;}
.btn.sm{padding:5px 12px;font-size:12.5px;}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;}
.bar{height:8px;background:var(--card2);border-radius:8px;overflow:hidden;border:1px solid var(--line);}
.bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--gold),var(--cinnabar));transition:width .5s;}
.empty{text-align:center;color:var(--ink3);padding:40px 10px;font-family:var(--sans);font-size:13.5px;}

/* ---------------------------------------------------------------- 首页 */
.hero{
  position:relative;overflow:hidden;border-radius:var(--r);padding:26px 28px;
  background:linear-gradient(135deg,var(--card),var(--card2));border:1px solid var(--line);
  box-shadow:var(--shadow);margin-bottom:16px;
}
.hero::after{
  content:"";position:absolute;right:-30px;top:-30px;width:190px;height:190px;border-radius:50%;
  background:radial-gradient(circle,rgba(176,138,74,.16),transparent 66%);
}
.hero .greet{font-size:13px;color:var(--ink3);font-family:var(--sans);letter-spacing:.08em;}
.hero h2{font-size:25px;margin:6px 0 10px;letter-spacing:.05em;}
.hero .quote{
  font-size:13.5px;color:var(--ink2);border-left:3px solid var(--gold-l);
  padding-left:12px;margin:14px 0 0;line-height:1.85;
}
.countdown{display:flex;gap:22px;margin-top:18px;flex-wrap:wrap;}
.cd-item{text-align:center;}
.cd-item b{display:block;font-size:31px;line-height:1.1;color:var(--cinnabar);font-family:var(--sans);}
.cd-item span{font-size:11.5px;color:var(--ink3);letter-spacing:.1em;font-family:var(--sans);}
.cd-item.gold b{color:var(--gold);}
.cd-item.ink b{color:var(--ink);}
.ring{position:relative;width:112px;height:112px;flex:0 0 112px;}
.ring svg{transform:rotate(-90deg);}
.ring .rc{position:absolute;inset:0;display:grid;place-items:center;text-align:center;}
.ring .rc b{font-size:23px;display:block;line-height:1.15;font-family:var(--sans);}
.ring .rc span{font-size:10.5px;color:var(--ink3);letter-spacing:.08em;font-family:var(--sans);}
.today-list{margin-top:6px;}
.today-list li{
  display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px dashed var(--line);
  font-family:var(--sans);font-size:13.5px;list-style:none;
}
.today-list li:last-child{border-bottom:none;}
.today-list ol,.today-list ul{margin:0;padding:0;}
.dot{width:7px;height:7px;border-radius:50%;flex:0 0 7px;background:var(--gold);}
.dot.red{background:var(--cinnabar);}
.dot.green{background:var(--green);}

/* ---------------------------------------------------------------- 计划表 */
.plan-tbl{width:100%;border-collapse:collapse;font-size:13.5px;}
.plan-tbl th{
  text-align:left;font-weight:600;font-size:12px;color:var(--ink3);letter-spacing:.08em;
  padding:8px 10px;border-bottom:2px solid var(--line2);font-family:var(--sans);white-space:nowrap;
}
.plan-tbl td{padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top;}
.plan-tbl tr.today{background:rgba(158,43,37,.06);}
.plan-tbl tr.done td{color:var(--ink3);}
.plan-tbl .dnum{
  font-family:var(--sans);font-weight:700;color:var(--cinnabar);font-size:15px;white-space:nowrap;
}
.stage{font-size:11px;padding:2px 7px;border-radius:5px;background:var(--card2);border:1px solid var(--line);font-family:var(--sans);white-space:nowrap;}

/* ---------------------------------------------------------------- 背诵卡 */
.study-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:14px;}
.chip{
  padding:4px 11px;border-radius:20px;background:var(--card);border:1px solid var(--line);
  font-size:12.5px;font-family:var(--sans);color:var(--ink2);
}
.card-stage{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow);overflow:hidden;display:flex;min-height:340px;
}
.spine{
  flex:0 0 46px;background:linear-gradient(180deg,var(--cinnabar),#7E1F1B);
  color:#FFF3E6;display:flex;align-items:center;justify-content:center;padding:16px 0;
  writing-mode:vertical-rl;letter-spacing:.28em;font-size:13px;position:relative;
}
.spine::after{
  content:"";position:absolute;inset:8px;border:1px solid rgba(255,255,255,.28);border-radius:3px;
  pointer-events:none;
}
.tc{flex:1;min-width:0;padding:26px 30px 22px;display:flex;flex-direction:column;}
.tc-top{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:16px;}
.tc-lab{
  font-family:var(--sans);font-size:12px;font-weight:700;color:var(--cinnabar);
  letter-spacing:.06em;padding:3px 10px;border-radius:6px;background:rgba(158,43,37,.07);
}
.tc-src{font-size:12.5px;color:var(--ink3);font-family:var(--sans);}
.tc-text{
  font-size:21px;line-height:2.05;letter-spacing:.02em;margin:0 0 18px;
  text-align:justify;
}
.tc-text .hl{color:var(--cinnabar);}
.reveal{display:none;}
.reveal.on{display:block;animation:fade .3s ease;}
.blk{border-left:3px solid var(--line2);padding:2px 0 2px 14px;margin:0 0 14px;}
.blk b{font-family:var(--sans);font-size:11.5px;letter-spacing:.1em;color:var(--ink3);display:block;margin-bottom:4px;font-weight:600;}
.blk .bd{font-size:14.5px;line-height:1.9;color:var(--ink2);}
.blk.suji{border-left-color:var(--gold);}
.blk.suji .bd{color:var(--ink);}
.blk.kao{border-left-color:var(--indigo);}
.blk.daomen{border-left-color:var(--green);font-style:normal;}
.blk .bd b{display:inline;color:var(--cinnabar);font-family:inherit;font-size:inherit;letter-spacing:0;font-weight:700;}
.tc-foot{margin-top:auto;padding-top:16px;border-top:1px dashed var(--line);display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.grade{display:flex;gap:8px;flex-wrap:wrap;}
.gbtn{
  padding:8px 15px;border-radius:9px;border:1px solid var(--line2);background:var(--card);
  font-size:13.5px;font-family:var(--sans);transition:.15s;
}
.gbtn:hover{transform:translateY(-2px);}
.gbtn.a:hover{border-color:#B94A42;color:#B94A42;}
.gbtn.b:hover{border-color:#B08A4A;color:#B08A4A;}
.gbtn.c:hover{border-color:#3E7A4E;color:#3E7A4E;}
.gbtn.d:hover{border-color:#1F3B6E;color:#1F3B6E;}
.kbd{
  display:inline-block;padding:1px 6px;border-radius:5px;border:1px solid var(--line2);
  background:var(--card2);font-family:var(--sans);font-size:11px;color:var(--ink3);
}
.inline-q{margin-top:16px;border-top:1px dashed var(--line);padding-top:14px;}
.iq{border:1px solid var(--line);border-radius:11px;padding:14px 16px;margin-bottom:12px;background:var(--card2);}
.iq .qs{font-size:14.5px;line-height:1.9;margin-bottom:10px;}
.iq .opt{
  display:block;width:100%;text-align:left;padding:8px 13px;margin:5px 0;border-radius:8px;
  border:1px solid var(--line);background:var(--card);font-size:14px;transition:.14s;font-family:var(--sans);
}
.iq .opt:hover{border-color:var(--gold);}
.iq .opt.ok{border-color:#3E7A4E;background:rgba(62,122,78,.10);color:#2E5A2E;}
.iq .opt.no{border-color:#B94A42;background:rgba(185,74,66,.10);color:#9E2B25;}
html[data-theme="night"] .iq .opt.ok{color:#8CC08C;}
html[data-theme="night"] .iq .opt.no{color:#E88B82;}
.iq .ans{font-size:13.5px;color:var(--ink2);font-family:var(--sans);margin-top:8px;}
.iq .ans b{color:var(--cinnabar);}
.fill-in{
  border:none;border-bottom:2px solid var(--line2);background:transparent;padding:4px 6px;
  font-family:var(--serif);font-size:15px;min-width:150px;outline:none;color:var(--cinnabar);
}
.fill-in:focus{border-bottom-color:var(--cinnabar);}

/* ---------------------------------------------------------------- 精读 */
.read-nav{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px;}
.rn{
  padding:6px 14px;border-radius:8px;border:1px solid var(--line);background:var(--card);
  font-size:13.5px;font-family:var(--sans);color:var(--ink2);transition:.15s;
}
.rn:hover,.rn.on{border-color:var(--cinnabar);color:var(--cinnabar);}
.rn.on{background:rgba(158,43,37,.06);font-weight:600;}
.grp-title{
  font-size:16px;margin:26px 0 10px;padding-bottom:7px;border-bottom:2px solid var(--line2);
  display:flex;align-items:center;gap:10px;letter-spacing:.04em;
}
.grp-title .cn{font-size:12px;color:var(--ink3);font-family:var(--sans);font-weight:400;}
.read-item{
  border:1px solid var(--line);border-radius:11px;background:var(--card);padding:14px 17px;
  margin-bottom:10px;position:relative;transition:.15s;
}
.read-item:hover{box-shadow:var(--shadow-s);}
.read-item.done{opacity:.62;}
.read-item .ri-h{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:7px;}
.read-item .ri-t{font-size:16px;line-height:1.95;text-align:justify;margin:0;}
.read-item .ri-x{margin-top:9px;font-size:13.5px;color:var(--ink2);line-height:1.85;font-family:var(--sans);}
.read-item .ri-x b{color:var(--cinnabar);}
.star{cursor:pointer;font-size:15px;opacity:.3;transition:.15s;}
.star.on{opacity:1;color:var(--gold);}

/* ---------------------------------------------------------------- 闪卡 */
.deck-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px;}
.fc-wrap{perspective:1400px;max-width:600px;margin:0 auto;}
.fc{
  position:relative;min-height:290px;border-radius:var(--r);cursor:pointer;
  transition:transform .5s cubic-bezier(.2,.8,.3,1);transform-style:preserve-3d;
}
.fc.flip{transform:rotateY(180deg);}
.fc-f,.fc-b{
  position:absolute;inset:0;backface-visibility:hidden;border-radius:var(--r);
  border:1px solid var(--line);box-shadow:var(--shadow);display:flex;
  align-items:center;justify-content:center;padding:34px;text-align:center;
}
.fc-f{background:linear-gradient(150deg,var(--card),var(--card2));}
.fc-b{background:linear-gradient(150deg,var(--cinnabar),#7E1F1B);color:#FFF6EC;transform:rotateY(180deg);}
.fc-f .q{font-size:22px;line-height:1.85;letter-spacing:.03em;}
.fc-b .a{font-size:19px;line-height:1.95;}
.fc-b .t{position:absolute;bottom:14px;left:0;right:0;font-size:11.5px;opacity:.7;font-family:var(--sans);letter-spacing:.1em;}
.fc-meta{text-align:center;margin-top:14px;font-family:var(--sans);font-size:12.5px;color:var(--ink3);}

/* ---------------------------------------------------------------- 题库 */
.q-item{border:1px solid var(--line);border-radius:11px;background:var(--card);padding:15px 18px;margin-bottom:11px;}
.q-item .qh{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px;}
.q-item .qtype{
  font-family:var(--sans);font-size:11px;padding:2px 8px;border-radius:5px;
  background:var(--card2);border:1px solid var(--line);color:var(--ink3);letter-spacing:.05em;
}
.q-item .stem{font-size:15.5px;line-height:1.95;margin-bottom:9px;text-align:justify;}
.q-item .opt{
  display:block;width:100%;text-align:left;padding:8px 13px;margin:5px 0;border-radius:8px;
  border:1px solid var(--line);font-size:14.5px;transition:.14s;font-family:var(--sans);background:var(--card2);
}
.q-item .opt:hover{border-color:var(--gold);}
.q-item .opt.ok{border-color:#3E7A4E;background:rgba(62,122,78,.11);color:#2E5A2E;font-weight:600;}
.q-item .opt.no{border-color:#B94A42;background:rgba(185,74,66,.11);color:#9E2B25;}
html[data-theme="night"] .q-item .opt.ok{color:#8CC08C;}
html[data-theme="night"] .q-item .opt.no{color:#E88B82;}
.q-ans{font-size:13.5px;font-family:var(--sans);color:var(--ink2);margin-top:9px;padding-top:9px;border-top:1px dashed var(--line);}
.q-ans b{color:var(--cinnabar);}
.filter-bar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:14px;}
.pill{
  padding:5px 13px;border-radius:20px;border:1px solid var(--line);background:var(--card);
  font-size:12.5px;font-family:var(--sans);color:var(--ink2);transition:.14s;
}
.pill:hover{border-color:var(--gold);}
.pill.on{background:var(--cinnabar);color:#FFF6EC;border-color:var(--cinnabar);}

/* ---------------------------------------------------------------- 进度 */
.stat-grid{display:grid;gap:13px;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));}
.stat{background:var(--card);border:1px solid var(--line);border-radius:11px;padding:15px 17px;}
.stat b{display:block;font-size:27px;font-family:var(--sans);line-height:1.2;color:var(--cinnabar);}
.stat span{font-size:12px;color:var(--ink3);font-family:var(--sans);}
.heat{display:grid;grid-template-columns:repeat(auto-fill,minmax(58px,1fr));gap:7px;}
.hcell{
  border:1px solid var(--line);border-radius:8px;padding:7px 5px;text-align:center;
  background:var(--card);font-family:var(--sans);
}
.hcell .hd{font-size:11px;color:var(--ink3);}
.hcell .hv{font-size:15px;font-weight:700;}
.hcell.lv0 .hv{color:var(--ink3);}
.hcell.lv1 .hv{color:var(--gold);}
.hcell.lv2 .hv{color:#3E7A4E;}
.hcell.lv3{background:rgba(46,90,46,.10);}
.hcell.lv3 .hv{color:var(--green);}
.hcell.cur{border-color:var(--cinnabar);box-shadow:0 0 0 2px rgba(158,43,37,.15);}

/* ---------------------------------------------------------------- AI */
.chat-wrap{display:flex;flex-direction:column;height:calc(100vh - 210px);min-height:420px;}
.chat-log{flex:1;overflow-y:auto;padding:6px 4px 14px;}
.msg{margin-bottom:16px;display:flex;gap:11px;}
.msg .av{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;display:grid;place-items:center;
  font-size:13px;font-family:var(--sans);font-weight:700;
}
.msg.u .av{background:var(--card2);border:1px solid var(--line);color:var(--ink2);}
.msg.a .av{background:var(--cinnabar);color:#FFF6EC;}
.msg .bub{
  flex:1;min-width:0;font-size:14.5px;line-height:1.9;
  background:var(--card);border:1px solid var(--line);border-radius:11px;padding:12px 15px;
  white-space:normal;word-break:break-word;
}
.msg.u .bub{background:var(--card2);}
.msg .bub p{margin:0 0 8px;}
.msg .bub p:last-child{margin:0;}
.msg .bub pre{background:var(--card2);border:1px solid var(--line);border-radius:8px;padding:10px;overflow-x:auto;font-size:13px;}
.msg .bub code{font-family:ui-monospace,Consolas,monospace;font-size:13px;}
.msg .bub strong{color:var(--cinnabar);}
.chat-in{display:flex;gap:9px;align-items:flex-end;padding-top:12px;border-top:1px solid var(--line);}
.chat-in textarea{
  flex:1;resize:none;border:1px solid var(--line);border-radius:11px;padding:11px 14px;
  background:var(--card);outline:none;font-size:14.5px;line-height:1.7;max-height:150px;
}
.chat-in textarea:focus{border-color:var(--gold);}
.quick{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:11px;}
.quick button{
  padding:5px 12px;border-radius:20px;border:1px solid var(--line);background:var(--card);
  font-size:12.5px;font-family:var(--sans);color:var(--ink2);transition:.14s;
}
.quick button:hover{border-color:var(--gold);color:var(--cinnabar);}
.srcs{display:flex;gap:6px;flex-wrap:wrap;margin-top:9px;font-family:var(--sans);font-size:11.5px;}
.srcs span{padding:2px 9px;border-radius:20px;background:var(--card2);border:1px solid var(--line);color:var(--ink3);}
.typing::after{content:"▍";animation:bl .8s steps(2) infinite;}
@keyframes bl{50%{opacity:0;}}

/* ---------------------------------------------------------------- 表单 */
.field{margin-bottom:15px;}
.field label{display:block;font-size:12.5px;color:var(--ink3);font-family:var(--sans);margin-bottom:6px;letter-spacing:.04em;}
.field input,.field select,.field textarea{
  width:100%;padding:9px 13px;border:1px solid var(--line);border-radius:9px;
  background:var(--card2);outline:none;font-size:14px;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--gold);}
.field .hint{font-size:11.5px;color:var(--ink3);margin-top:5px;font-family:var(--sans);line-height:1.6;}
.switch{display:flex;align-items:center;gap:9px;font-size:14px;font-family:var(--sans);cursor:pointer;}

/* ---------------------------------------------------------------- 搜索 */
#searchOv{
  position:fixed;inset:0;z-index:120;background:rgba(30,24,18,.42);backdrop-filter:blur(3px);
  display:none;padding:80px 20px;
}
#searchOv.on{display:block;}
.search-box{
  max-width:660px;margin:0 auto;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;
}
.search-box input{
  width:100%;border:none;border-bottom:1px solid var(--line);padding:17px 21px;
  font-size:17px;background:transparent;outline:none;
}
.search-res{max-height:56vh;overflow-y:auto;}
.sres{padding:12px 21px;border-bottom:1px solid var(--line);cursor:pointer;transition:.13s;}
.sres:hover,.sres.sel{background:var(--card2);}
.sres .st{font-size:14.5px;line-height:1.8;margin-bottom:3px;}
.sres .st mark{background:rgba(176,138,74,.32);color:inherit;border-radius:3px;}
.sres .sm{font-size:11.5px;color:var(--ink3);font-family:var(--sans);}
.sres .sm .lk-tag{color:var(--cinnabar);border:1px solid currentColor;border-radius:999px;padding:0 6px;font-size:10.5px;}
.sres-lk .st{color:var(--ink2);}
.sres-lk::after{content:'';display:block;}
#srQuota b{color:var(--cinnabar);}

/* ---------------------------------------------------------------- 欢迎页 */
.ov{
  position:fixed;inset:0;z-index:150;background:rgba(30,24,18,.5);backdrop-filter:blur(4px);
  display:none;align-items:center;justify-content:center;padding:22px;
}
.ov.on{display:flex;}
.ov-card{
  background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);
  max-width:720px;width:100%;max-height:88vh;overflow-y:auto;padding:32px 36px;
}
.ov-card h2{margin:0 0 6px;font-size:23px;letter-spacing:.06em;}
.ov-card .q{margin:14px 0 20px;padding-left:14px;border-left:3px solid var(--gold-l);color:var(--ink2);font-size:13.5px;line-height:1.9;}
.ov-grid{display:grid;gap:11px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));margin-bottom:20px;}
.ov-grid div{background:var(--card2);border:1px solid var(--line);border-radius:11px;padding:12px 15px;font-size:13px;font-family:var(--sans);color:var(--ink2);line-height:1.7;}
.ov-grid b{display:block;color:var(--ink);font-size:13.5px;margin-bottom:3px;}
.steps{counter-reset:s;margin:0 0 18px;padding:0;list-style:none;}
.steps li{counter-increment:s;position:relative;padding-left:31px;margin-bottom:9px;font-size:13.5px;font-family:var(--sans);color:var(--ink2);}
.steps li::before{
  content:counter(s);position:absolute;left:0;top:2px;width:21px;height:21px;border-radius:50%;
  background:var(--cinnabar);color:#FFF6EC;font-size:11.5px;display:grid;place-items:center;
}
.ov-note{font-size:12px;color:var(--ink3);font-family:var(--sans);line-height:1.8;background:var(--card2);border-radius:9px;padding:11px 14px;margin-bottom:16px;}

/* ---------------------------------------------------------------- toast */
#toast{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%);z-index:210;pointer-events:none;
  display:flex;flex-direction:column;align-items:center;gap:8px;width:max-content;max-width:min(92vw,560px);
}
.toast-item{
  background:var(--ink);color:var(--paper);padding:10px 20px;border-radius:22px;
  font-size:13.5px;font-family:var(--sans);box-shadow:0 10px 30px rgba(0,0,0,.22);
  opacity:0;transform:translateY(14px) scale(.98);animation:tin .26s cubic-bezier(.2,.9,.3,1) forwards;
  text-align:center;
}
.toast-item.out{animation:tout .4s ease forwards;}
@keyframes tin{to{opacity:1;transform:none;}}
@keyframes tout{to{opacity:0;transform:translateY(8px);}}

@media(max-width:880px){
  :root{--side:0px;}
  .side{
    position:fixed;left:0;top:0;width:230px;flex-basis:230px;transform:translateX(-100%);
    transition:.25s;box-shadow:var(--shadow);
  }
  .side.open{transform:none;}
  #menuBtn{display:inline-flex !important;}
  #pageWrap{padding:16px 15px 70px;}
  .topbar{padding:9px 14px;}
  .spine{flex-basis:34px;font-size:11px;letter-spacing:.2em;}
  .tc{padding:18px 17px;}
  .tc-text{font-size:18.5px;line-height:1.95;}
}
#menuBtn{display:none;}
@media print{.side,.topbar,.tc-foot,.quick{display:none;}}

/* ==========================================================================
   v2 增量：分级标识 / 计划阶段 / 应试题型 / 错题本 / 限时模考 / 授权闸门 / 水印
   ========================================================================== */

/* ---------------------------------------------------------------- 分级标识 */
.navlv{margin-top:9px;display:flex;flex-direction:column;gap:2px;}
.navlv .nvl{
  display:inline-block;align-self:flex-start;font-size:11px;font-family:var(--sans);font-weight:700;
  padding:2px 9px;border-radius:20px;background:rgba(158,43,37,.09);color:var(--cinnabar);
  border:1px solid rgba(158,43,37,.18);letter-spacing:.06em;
}
html[data-theme="night"] .navlv .nvl{background:rgba(212,87,76,.14);border-color:rgba(212,87,76,.3);}
.navlv .muted{font-size:11px;}
.lvchip{
  display:inline-block;margin-left:10px;vertical-align:middle;font-size:11.5px;font-family:var(--sans);
  font-weight:600;padding:3px 11px;border-radius:20px;background:var(--card2);
  border:1px solid var(--line2);color:var(--ink2);letter-spacing:.04em;
}
.topbar .crumb .crumb-lv{
  margin-left:10px;font-size:11px;font-family:var(--sans);font-weight:600;
  padding:2px 9px;border-radius:20px;background:rgba(158,43,37,.08);color:var(--cinnabar);
}

/* ---------------------------------------------------------------- 计划阶段条 */
.phase-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px;}
.ph{
  flex:1;min-width:130px;border:1px solid var(--line);border-radius:11px;padding:11px 14px;
  background:var(--card);border-left-width:4px;
}
.ph b{display:block;font-size:13.5px;font-family:var(--sans);}
.ph span{font-size:11.5px;color:var(--ink3);font-family:var(--sans);}
.ph-new{border-left-color:var(--cinnabar);}
.ph-loop{border-left-color:var(--gold);}
.ph-pow{border-left-color:var(--indigo);}
.ph-sprint{border-left-color:var(--green);}
.stage.s-new{background:rgba(158,43,37,.08);border-color:rgba(158,43,37,.2);color:var(--cinnabar);}
.stage.s-loop{background:rgba(176,138,74,.1);border-color:rgba(176,138,74,.25);color:#8A6A32;}
.stage.s-pow{background:rgba(31,59,110,.08);border-color:rgba(31,59,110,.2);color:var(--indigo);}
.stage.s-sprint{background:rgba(46,90,46,.08);border-color:rgba(46,90,46,.2);color:var(--green);}
html[data-theme="night"] .stage.s-loop{color:var(--gold);}

/* ---------------------------------------------------------------- 题型标签 */
.qtype.t-A1{background:rgba(158,43,37,.09);border-color:rgba(158,43,37,.2);color:var(--cinnabar);}
.qtype.t-A2{background:rgba(158,43,37,.09);border-color:rgba(158,43,37,.2);color:var(--cinnabar);}
.qtype.t-B1{background:rgba(31,59,110,.08);border-color:rgba(31,59,110,.2);color:var(--indigo);}
.qtype.t-X{background:rgba(139,26,26,.10);border-color:rgba(139,26,26,.24);color:#8B1A1A;font-weight:700;}
.qtype.t-F{background:rgba(46,90,46,.09);border-color:rgba(46,90,46,.2);color:var(--green);}
.qtype.t-AN{background:rgba(176,138,74,.12);border-color:rgba(176,138,74,.3);color:#8A6A32;font-weight:700;}
.qtype.t-SP{background:var(--card2);}
.qtype.t-AUTO{background:var(--card2);}
html[data-theme="night"] .qtype.t-X{color:#E88B82;}
html[data-theme="night"] .qtype.t-AN{color:var(--gold);}
.qnote{font-size:11.5px;color:var(--ink3);font-family:var(--sans);margin:-4px 0 7px;}
.badge-no{
  font-family:var(--sans);font-size:11px;padding:2px 8px;border-radius:5px;
  background:rgba(185,74,66,.12);color:#9E2B25;border:1px solid rgba(185,74,66,.22);
}
html[data-theme="night"] .badge-no{color:#E88B82;}
.no-txt{color:var(--cinnabar);font-weight:700;}
.case-in{
  width:100%;border:1px solid var(--line);border-radius:9px;padding:10px 13px;
  background:var(--card2);outline:none;font-size:14px;line-height:1.8;resize:vertical;margin-bottom:8px;
}
.case-in:focus{border-color:var(--gold);}
.ans-x{font-size:13.5px;font-family:var(--sans);line-height:1.85;color:var(--ink2);margin-top:6px;}
.opt.multi.on{border-color:var(--cinnabar);background:rgba(158,43,37,.08);font-weight:600;}
.q-item.wrong{border-left:3px solid var(--cinnabar);}

/* ---------------------------------------------------------------- 限时模考 */
.mock-top{
  display:flex;align-items:center;gap:11px;flex-wrap:wrap;position:sticky;top:0;z-index:20;
  background:var(--topbg);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);
  padding:11px 0;margin:-8px 0 16px;
}
.clock{
  font-family:ui-monospace,Consolas,monospace;font-size:21px;font-weight:700;letter-spacing:.06em;
  color:var(--cinnabar);padding:2px 12px;border:1px solid var(--line);border-radius:9px;background:var(--card);
}
.clock.urgent{animation:urg 1s infinite;border-color:var(--cinnabar);}
@keyframes urg{50%{opacity:.35;}}
.mock-wrap{display:grid;grid-template-columns:1fr 178px;gap:20px;align-items:start;}
.mock-paper{min-width:0;}
.mock-q{
  border:1px solid var(--line);border-radius:11px;background:var(--card);
  padding:15px 18px;margin-bottom:12px;scroll-margin-top:74px;
}
.mq-h{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:8px;}
.mq-n{
  width:23px;height:23px;flex:0 0 23px;border-radius:50%;background:var(--cinnabar);color:#FFF6EC;
  font-family:var(--sans);font-size:12px;font-weight:700;display:grid;place-items:center;
}
.mock-q .stem{font-size:15.5px;line-height:1.95;margin-bottom:9px;text-align:justify;}
.mock-q .opt{
  display:block;width:100%;text-align:left;padding:8px 13px;margin:5px 0;border-radius:8px;
  border:1px solid var(--line);font-size:14.5px;transition:.14s;font-family:var(--sans);background:var(--card2);
}
.mock-q .opt:hover{border-color:var(--gold);}
.mock-q .opt.on{border-color:var(--cinnabar);background:rgba(158,43,37,.09);font-weight:600;}
.mock-card{
  position:sticky;top:74px;border:1px solid var(--line);border-radius:11px;
  background:var(--card);padding:14px 15px;
}
.cardgrid{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin-top:10px;}
.cg{
  aspect-ratio:1;border:1px solid var(--line);border-radius:7px;background:var(--card2);
  font-family:var(--sans);font-size:11.5px;color:var(--ink3);display:grid;place-items:center;transition:.13s;
}
.cg:hover{border-color:var(--gold);}
.cg.done{background:var(--cinnabar);color:#FFF6EC;border-color:var(--cinnabar);font-weight:700;}
.score-hero{
  display:flex;gap:26px;align-items:center;flex-wrap:wrap;border-radius:14px;padding:24px 28px;
  border:1px solid var(--line);background:var(--card);margin-bottom:16px;
}
.score-hero.pass{border-left:5px solid var(--green);}
.score-hero.fail{border-left:5px solid var(--cinnabar);}
.sh-num{font-family:var(--sans);font-size:56px;font-weight:800;line-height:1;color:var(--green);}
.score-hero.fail .sh-num{color:var(--cinnabar);}
.sh-num span{font-size:17px;font-weight:400;color:var(--ink3);margin-left:6px;}
.sh-txt{flex:1;min-width:230px;}
.sh-txt>b{font-size:19px;}
.sh-txt p{margin:6px 0;font-size:13.5px;font-family:var(--sans);color:var(--ink2);}
.plan-tbl tr.row-x td{background:var(--card2);font-size:13px;color:var(--ink2);}
.plan-tbl tfoot td{padding:9px 10px;border-top:1px solid var(--line2);}
@media(max-width:880px){
  .mock-wrap{grid-template-columns:1fr;}
  .mock-card{position:static;order:-1;}
  .cardgrid{grid-template-columns:repeat(10,1fr);}
}

/* ---------------------------------------------------------------- 授权 / 预览 */
.lv-preview{border:1px dashed var(--line2);border-radius:11px;padding:14px 17px;background:var(--card2);}
.lv-preview>b{display:block;margin-bottom:8px;font-size:14px;}
.lv-preview ul{margin:0;padding-left:20px;line-height:2;}
.kv{display:flex;gap:12px;padding:8px 0;border-bottom:1px dashed var(--line);font-size:13.5px;font-family:var(--sans);}
.kv span{color:var(--ink3);flex:0 0 90px;}
.kv b{word-break:break-all;}

/* 授权闸门 */
#gate{
  position:fixed;inset:0;z-index:400;display:none;align-items:center;justify-content:center;
  padding:22px;background:
    radial-gradient(circle at 20% 15%,rgba(176,138,74,.12),transparent 45%),
    radial-gradient(circle at 82% 88%,rgba(158,43,37,.12),transparent 45%),
    var(--paper);
}
#gate.on{display:flex;}
.gate-card{
  background:var(--card);border:1px solid var(--line2);border-radius:20px;box-shadow:var(--shadow);
  max-width:480px;width:100%;padding:38px 40px;text-align:center;position:relative;overflow:hidden;
}
.gate-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;
  background:linear-gradient(90deg,var(--gold-l),var(--cinnabar),var(--gold-l));
}
.gate-seal{
  width:56px;height:56px;margin:0 auto 14px;border-radius:14px;display:grid;place-items:center;
  background:var(--cinnabar);color:#FFF6EC;font-size:29px;font-weight:700;font-family:var(--serif);
  box-shadow:0 8px 22px rgba(158,43,37,.28);
}
.gate-card h2{margin:0 0 4px;font-size:22px;letter-spacing:.06em;}
.gate-sub{margin:0 0 18px;font-size:12.5px;color:var(--ink3);font-family:var(--sans);letter-spacing:.06em;}
.gate-info{
  font-size:13px;font-family:var(--sans);color:var(--ink2);line-height:1.9;text-align:left;
  background:var(--card2);border:1px solid var(--line);border-radius:11px;padding:13px 16px;margin-bottom:18px;
}
.gate-info b{color:var(--cinnabar);}
#gateCode{
  width:100%;padding:13px 16px;border:1px solid var(--line2);border-radius:11px;background:var(--card2);
  outline:none;font-size:17px;letter-spacing:.16em;text-align:center;
  font-family:ui-monospace,Consolas,monospace;text-transform:uppercase;
}
#gateCode:focus{border-color:var(--cinnabar);box-shadow:0 0 0 3px rgba(158,43,37,.1);}
.gate-err{min-height:22px;font-size:12.5px;font-family:var(--sans);color:var(--cinnabar);margin:9px 0 4px;}
.gate-card .row{justify-content:center;}
.gate-foot{margin:18px 0 0;font-size:11.5px;color:var(--ink3);font-family:var(--sans);line-height:1.8;}

/* ---------------------------------------------------------------- 溯源码水印 */
#wm{display:none;}
#wm.on{
  display:block;position:fixed;inset:0;z-index:40;pointer-events:none;overflow:hidden;
  user-select:none;
}
.wm-line{
  position:absolute;left:-14%;width:128%;white-space:nowrap;text-align:center;
  font-family:var(--sans);font-size:14px;letter-spacing:.34em;
  transform:rotate(-19deg);transform-origin:center;
}
#wm.wm-light .wm-line{color:rgba(90,70,50,.055);}
#wm.wm-mid .wm-line{color:rgba(90,70,50,.10);}
#wm.wm-deep .wm-line{color:rgba(90,70,50,.17);}
html[data-theme="night"] #wm.wm-light .wm-line{color:rgba(232,205,151,.05);}
html[data-theme="night"] #wm.wm-mid .wm-line{color:rgba(232,205,151,.09);}
html[data-theme="night"] #wm.wm-deep .wm-line{color:rgba(232,205,151,.16);}
/* 正文防整段搬运（输入框不受影响） */
#pageWrap,#side,.brand{user-select:none;-webkit-user-select:none;}
input,textarea,.fill-in,.case-in{-webkit-user-select:text;user-select:text;}

@media print{
  #wm{display:block !important;}
  #wm .wm-line{color:rgba(90,70,50,.14) !important;}
  #gate,#boot,#scrim,#toast{display:none !important;}
}

/* ==========================================================================
   v2.1 增量：载入遮罩 / 站内弹层 / 使用体验 / 观感打磨
   ========================================================================== */

/* ---------------------------------------------------------------- 载入遮罩 */
#boot{
  position:fixed;inset:0;z-index:300;display:grid;place-items:center;padding:24px;
  background:
    radial-gradient(circle at 22% 18%,rgba(176,138,74,.10),transparent 45%),
    radial-gradient(circle at 80% 86%,rgba(158,43,37,.08),transparent 45%),
    var(--paper);
  transition:opacity .3s ease;
}
#boot.off{opacity:0;pointer-events:none;}
.boot-c{
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  color:var(--ink2);font-family:var(--sans);font-size:13.5px;max-width:520px;
}
.boot-c b{font-size:17px;color:var(--cinnabar);font-family:var(--serif);letter-spacing:.06em;}
.boot-c p{margin:0;line-height:1.9;}
.boot-c .btn{margin-top:6px;}
.spin{
  width:30px;height:30px;border-radius:50%;display:block;
  border:3px solid var(--line2);border-top-color:var(--cinnabar);
  animation:sp .8s linear infinite;
}
@keyframes sp{to{transform:rotate(360deg);}}

/* ---------------------------------------------------------------- 侧栏遮罩 */
#scrim{
  position:fixed;inset:0;z-index:29;background:rgba(30,24,18,.42);
  backdrop-filter:blur(2px);opacity:0;pointer-events:none;transition:.24s;
}
#scrim.on{opacity:1;pointer-events:auto;}

/* ---------------------------------------------------------------- 站内弹层 */
#modal{z-index:500;}
.modal-card{max-width:560px;padding:28px 32px;}
.modal-card h2{margin:0 0 12px;font-size:20px;}
.modal-card #mdBody{font-size:14px;line-height:1.95;font-family:var(--sans);color:var(--ink2);}
.modal-card #mdBody p{margin:0 0 10px;}
.modal-card #mdBody p:last-child{margin-bottom:0;}
.modal-card #mdBody b{color:var(--cinnabar);}
.modal-card .kv{font-size:13px;}
.modal-card .md-foot{justify-content:flex-end;margin-top:20px;gap:10px;}

/* ---------------------------------------------------------------- 顶栏小件 */
.tbtn .ti{font-size:14px;opacity:.7;}
.tbtn .kbd{
  padding:0 5px;border-radius:4px;font-size:10px;letter-spacing:.04em;
  background:var(--card2);border:1px solid var(--line);color:var(--ink3);
}
#searchBtn:hover .kbd{border-color:var(--gold);}

/* ---------------------------------------------------------------- 提示条 */
.tip{
  border-radius:10px;padding:10px 14px;font-size:12.5px;font-family:var(--sans);
  line-height:1.8;margin-bottom:12px;border:1px solid var(--line);
}
.tip.warn{background:rgba(176,138,74,.10);border-color:rgba(176,138,74,.3);color:#8A6A32;}
.tip.ok{background:rgba(46,90,46,.08);border-color:rgba(46,90,46,.22);color:var(--green);}
html[data-theme="night"] .tip.warn{color:var(--gold);}

/* 危险按钮 */
.btn.danger{border-color:rgba(185,74,66,.45);color:#9E2B25;}
.btn.danger:hover{background:rgba(185,74,66,.08);border-color:#B94A42;color:#9E2B25;}
html[data-theme="night"] .btn.danger{color:#E88B82;}

/* ---------------------------------------------------------------- 表格横滚 */
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -4px;padding:0 4px;}
.tbl-wrap .plan-tbl{min-width:520px;}

/* ---------------------------------------------------------------- 闸门小件 */
.gate-mode{
  display:flex;align-items:center;justify-content:center;gap:7px;
  font-size:11.5px;font-family:var(--sans);color:var(--ink3);
  margin:-8px 0 14px;padding:7px 10px;border-radius:9px;background:var(--card2);
  border:1px dashed var(--line2);
}
.gate-mode.on{color:var(--green);border-color:rgba(46,90,46,.28);background:rgba(46,90,46,.06);}
html[data-theme="night"] .gate-mode.on{color:#8CC08C;}
.gate-mode .dotok,.gate-mode .dotoff{
  width:7px;height:7px;border-radius:50%;display:inline-block;background:var(--ink3);
}
.gate-mode .dotok{background:var(--green);box-shadow:0 0 0 3px rgba(46,90,46,.15);}

/* ---------------------------------------------------------------- 交互与观感 */
.card{transition:box-shadow .2s ease,border-color .2s ease,transform .2s ease;}
.card:hover{box-shadow:0 2px 6px rgba(80,60,30,.07),0 14px 34px rgba(80,60,30,.09);}
.card.flat:hover{box-shadow:var(--shadow-s);}
.q-item,.read-item,.mock-q{transition:box-shadow .18s ease,border-color .18s ease;}
.q-item:hover,.read-item:hover{border-color:var(--line2);}

:focus-visible{outline:2px solid var(--cinnabar);outline-offset:2px;border-radius:6px;}
.btn:focus-visible,.tbtn:focus-visible,.pill:focus-visible,.rn:focus-visible{outline-offset:3px;}
.nav button:focus-visible{outline-offset:-2px;}

.empty{
  border:1px dashed var(--line2);border-radius:var(--r);background:var(--card2);
  padding:44px 20px;line-height:2;
}
.empty b{display:block;font-size:15px;color:var(--ink2);font-family:var(--serif);margin-bottom:4px;}

.sres.sel{background:var(--card2);box-shadow:inset 3px 0 0 var(--cinnabar);}

.plan-tbl tr.today td:first-child{box-shadow:inset 3px 0 0 var(--cinnabar);}
.plan-tbl tbody tr:hover{background:rgba(176,138,74,.06);}

/* 深浅色细节 */
html[data-theme="night"] .btn.pri{color:#FFF6EC;}
html[data-theme="night"] .seal,
html[data-theme="night"] .gate-seal{color:#FFF6EC;}
html[data-theme="night"] .fc-b{color:#FFF6EC;}
html[data-theme="night"] ::-webkit-scrollbar-thumb{background:var(--line2);border-color:var(--paper);}
html[data-theme="night"] body{
  background-image:
    radial-gradient(circle at 12% 8%,rgba(211,174,106,.045),transparent 42%),
    radial-gradient(circle at 88% 92%,rgba(212,87,76,.04),transparent 45%);
}
html[data-theme="night"] .hero::after{background:radial-gradient(circle,rgba(211,174,106,.12),transparent 66%);}
html[data-theme="night"] .tip.warn{background:rgba(211,174,106,.10);border-color:rgba(211,174,106,.28);}

/* ---------------------------------------------------------------- 移动端细化 */
@media(max-width:880px){
  .side{box-shadow:0 0 40px rgba(0,0,0,.28);}
  .hero{padding:20px 18px;}
  .hero h2{font-size:21px;}
  .countdown{gap:16px;}
  .cd-item b{font-size:25px;}
  .ring{width:92px;height:92px;flex-basis:92px;}
  .ring svg{width:92px;height:92px;}
  .card{padding:16px 15px;}
  .ov-card{padding:22px 18px;border-radius:15px;}
  .modal-card{padding:22px 18px;}
  .gate-card{padding:28px 20px;}
  .tbl-wrap .plan-tbl{font-size:12.5px;}
  .plan-tbl th,.plan-tbl td{padding:7px 8px;}
  .topbar .crumb{font-size:12px;}
  #searchBtn .kbd{display:none;}
  .chat-wrap{height:calc(100vh - 190px);}
}
@media(max-width:560px){
  .grid.g3,.grid.g4{grid-template-columns:1fr;}
  .stat b{font-size:23px;}
  .tc-text{font-size:17px;line-height:1.9;}
  .tbtn{padding:6px 10px;font-size:12.5px;}
  #pageWrap{padding:14px 12px 80px;}
}

/* 打印：去掉交互壳，只留内容 */
@media print{
  #boot,#scrim,#modal,.tbtn,.side-foot{display:none !important;}
  .card,.read-item,.q-item{box-shadow:none !important;break-inside:avoid;}
  .page{animation:none !important;}
  #pageWrap{max-width:none;padding:0;}
}

/* ==========================================================================
   手机 / 平板（触屏）：加大点击目标、优化阅读与滚动
   ========================================================================== */
@media (pointer:coarse){
  *{-webkit-tap-highlight-color:rgba(158,43,37,.12);}
  .btn{padding:11px 18px;min-height:44px;}
  .btn.sm{min-height:38px;padding:8px 14px;}
  .tbtn{min-height:40px;padding:8px 14px;}
  .nav button{padding:12px 12px;font-size:15px;}
  .rn,.pill{min-height:40px;display:inline-flex;align-items:center;}
  .gbtn{padding:11px 16px;min-height:44px;}
  .q-item .opt,.mock-q .opt,.iq .opt{padding:11px 14px;min-height:44px;}
  .fill-in,.case-in{min-height:42px;font-size:16px;}
  .chat-in textarea{font-size:16px;}
  .star{font-size:20px;padding:2px 6px;}
  .plan-tbl td,.plan-tbl th{padding:11px 10px;}
  .read-item,.q-item,.mock-q{padding:16px 15px;}
  .tc-text{font-size:20.5px;}
  .cardgrid{gap:8px;}
  .cg{font-size:13px;}
  .ov-card,.modal-card,.gate-card{border-radius:16px;}
  #gateCode{font-size:19px;letter-spacing:.12em;}
}
@media (max-width:880px){
  #toast{bottom:calc(20px + env(safe-area-inset-bottom,0px));max-width:92vw;}
  .topbar{position:sticky;}
  .mock-top{top:0;}
}

/* ==========================================================================
   v3.0 网页版：免费试读 / 全能码解锁
   ========================================================================== */
.lockbox{text-align:center;padding:30px 18px;}
.lockbox .lockic{font-size:34px;line-height:1;margin-bottom:10px;opacity:.85;}
.lockbox h3{margin:0 0 10px;font-size:18px;color:var(--ink);}
.lockbox p{margin:0 0 8px;color:var(--ink3);font-size:14px;line-height:1.85;}
.lockbox p b{color:var(--cinnabar);}
.lockbox .btn{margin-top:12px;}
.ri-lock{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:15px;color:var(--ink3);
  font-size:13.5px;line-height:1.75;}
.ri-lock b{color:var(--ink2);}
.ri-lock .btn{margin-left:auto;}
.iq-lock{border-style:dashed;}
.iq-lock .qs{color:var(--ink3);font-size:13.5px;line-height:1.8;}
html[data-theme="night"] .lockbox h3,
html[data-theme="night"] .ri-lock b{color:var(--ink);}

/* ==========================================================================
   v3.0 手机端体验增强
   ========================================================================== */
html,body{overflow-x:hidden;}
.page,.read-item,.q-item,.card,.tc,#pageWrap{-webkit-overflow-scrolling:touch;}
@media(max-width:880px){
  /* 给右下角浮动「我的」按钮留出安全距离，避免遮挡最后一条内容 */
  #pageWrap{padding:14px 14px calc(96px + env(safe-area-inset-bottom,0px));}
  .topbar{padding-top:calc(6px + env(safe-area-inset-top,0px));}
  .topbar .crumb{max-width:42vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  #helpBtn{display:none;}                 /* 手机上收掉「导览」，欢迎页仍会自动出现 */
  .tcmc{right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));}
  .tcmf{font-size:12.5px;gap:8px;}
  .tcmf .go{padding:6px 12px;min-height:34px;font-size:12px;}
}
@media(max-width:560px){
  input,select,textarea{font-size:16px;}  /* 防止 iOS 聚焦时自动放大页面 */
  .seg,.tabs{overflow-x:auto;flex-wrap:nowrap;}
  .seg>*,.tabs>*{flex:0 0 auto;}
  .lockbox{padding:24px 12px;}
  .lockbox h3{font-size:16.5px;}
  .lockbox p{font-size:13.5px;}
  #toast{bottom:calc(84px + env(safe-area-inset-bottom,0px));}
}